JP3150858U - Telescopic shelf - Google Patents

Abstract

The present invention provides a telescopic shelf that can be easily discarded, and a new method of using the material by using a material that is not conventionally used as the telescopic shelf. A telescopic shelf 5 includes a main body 10 and a base 110 attached to the main body 10. The main body 10 includes a left main body 20 and a right main body 60, and slides on each other. In addition, the pedestal 110 includes a left pedestal 120 and a right pedestal 160, and slides on each other. The left base 120 is locked to the protruding piece 40 protruding from the side surface 31 of the left main body 20, and similarly, the right base 160 is a protruding piece protruding from the side 71 of the right main body 60. Locked. The left main body portion 20, the right main body portion 60, the left base portion 120, and the right base portion 160 are formed of a single cardboard blank. [Selection] Figure 2

Description

  The present invention relates to a telescopic shelf.

  Conventionally, as an expansion / contraction shelf, as shown in Patent Document 1, a frame that can be expanded / contracted in the left / right direction is provided with a shelf that can be expanded / contracted in the left / right direction in accordance with the expansion / contraction operation of the frame. As shown in Patent Document 2, a base frame portion that is attached in pressure contact with an opposing surface, and a base frame portion that is fixed in an orthogonal angle direction or the same angular direction and mounted on the upper side, as shown in Patent Document 2. There is a thing provided with a shelf part to place.

JP 2000-217645 A Japanese Patent Laid-Open No. 10-192077

  However, the telescopic shelves in Patent Documents 1 and 2 have a problem that disposal is not easy. In addition, by using a material that has not been conventionally used as a stretchable shelf, a new method of using the material has been demanded.

  Therefore, the problems to be solved by the present invention are to provide a retractable shelf that can be easily disposed of, and to provide a new method of using the material by using a material that is not conventionally used as a stretchable shelf. That is.

  The present invention was created in order to solve the above-mentioned problems. First, it is a telescopic shelf having a main body portion and a base portion, and the main body portion includes a left main body portion, A left main body that is formed of a single sheet-like paper blank, and is a rectangular plate-shaped first bottom surface; A first rear rear plate having a square shape standing from a side portion on the back side of the bottom surface portion via a broken line, and a first rear side arranged continuously from the upper side of the first rear side rear plate portion via a broken line. A square first front back plate portion provided substantially parallel to the back plate portion, and a square shape erected from the side portion on the front side of the first bottom surface portion via a broken line. The first front side front plate part and the first front side front plate part are connected to each other through a broken line from the upper side of the first front side front plate part, and substantially parallel to the first front side front plate part on the back side of the first front side front plate part. From the left side of the bottom part, the 1st front part formed with the height of the upper end lower than the height of the upper end of the back part, A first trapezoidal shape standing up through a polygonal line, the upper side of which is inclined upward from the front side toward the rear side, and the upper side of the first outer side plate part connected to the right side through the broken line. A first side surface belt-shaped plate portion formed in a belt shape along the upper side of the first outer side plate portion, and a side surface on the right side surface side of the first side surface belt-shaped plate portion that is continuously provided via a broken line. A first inner side plate portion provided substantially parallel to the outer side plate portion, having a substantially trapezoidal shape with an upper side inclined upward from the front side toward the back side, and provided continuously from the first intermediate side plate portion. A first inner side plate having an opening for projecting the first protruding piece to the right side, and a first front rear plate or 1 A first intermediate side plate portion provided between the first outer side plate portion and the first inner side plate portion, which is provided continuously from the left side of the rear side rear plate portion via a broken line, and is cut into a region inside the first intermediate side plate portion. And a first side piece having a first protruding piece that protrudes to the right side from the opening of the first inner side plate, and the right main body is a single sheet. A second bottom surface portion that is formed of a sheet-like paper blank, is a square, plate-shaped second bottom surface portion, and a left side region is provided to overlap the top surface of the first bottom surface portion; A second rear back plate portion having a square shape standing from a side portion on the back side of the bottom surface portion via a broken line, and a second rear back portion provided continuously from the upper side of the second rear back plate portion via a broken line. A second back side plate having a square second front side back plate provided substantially parallel to the face plate, and a polygonal line from the front side of the second bottom side A square-shaped second front front plate portion erected via the second front front plate portion connected to the rear side of the second front front plate portion connected from the upper side of the second front front plate portion via a broken line; A second front part having a square shape and a second rear side front plate part provided substantially in parallel with each other, a second front part having a height at the upper end lower than a height at the upper end of the rear part, and a bottom part A second trapezoidal shape standing upright from the right side of the second side plate, the upper side of which is inclined upward from the front side toward the back side, and the left side surface from the upper side of the second outer side plate portion via the broken line A second side surface belt-shaped plate portion formed in a strip shape along the upper side of the second outer side plate portion, and a left side surface side of the second side surface belt-shaped plate portion via a broken line. A second inner side plate portion provided substantially parallel to the second outer side plate portion, and having a substantially trapezoidal shape with its upper side facing upward from the front side toward the rear side. A second inner side plate portion having an opening for projecting the second projecting piece portion continuously provided from the second intermediate side plate portion to the left side surface, and the second front side rear plate portion or the second (2) A second intermediate side plate portion provided between the second outer side plate portion and the second inner side plate portion, which is provided continuously from the right side of the rear back plate portion via a broken line, and is cut into a region inside the second intermediate side plate portion. And a second side piece having a second protruding piece that protrudes to the left side from the opening of the second inner side plate, and whichever of the right and left sides The back portion of either one is inserted into the other back portion, the front portion of the one is inserted into the other front portion, and at least a part of the one bottom portion is located on the top surface of the other bottom portion. The left main body and the right main body are slidable with each other The pedestal has a left pedestal and a right pedestal that slides with respect to the left pedestal, and the left pedestal is formed of a single sheet-like paper blank and has a rectangular shape. The first upper surface plate portion whose length in the front-rear direction is shorter than the length in the front-rear direction of the first bottom surface portion, and a side portion on the back side of the first upper surface plate portion downward through a broken line. A first back plate portion having a rectangular shape that is connected to the first upper surface plate portion at a substantially right angle and whose length in the height direction is shorter than the length in the height direction of the first back surface portion; It is connected to the front side from the lower side of the face plate part via a broken line, and the length in the front-rear direction is shorter than the length in the front-rear direction of the first upper face plate part, and is provided substantially parallel to the first upper face plate part. A first rear bottom plate portion and a first rear portion that is arranged in parallel upward from the side portion on the front side of the first rear bottom plate portion via a broken line in parallel with the first back plate portion. A side standing plate portion, a first front plate portion that is connected downward from the side portion on the front side of the first upper surface plate portion via a broken line, and is formed symmetrically with the first back plate portion; From the lower side of the face plate portion through the broken line to the front side, from the first rear bottom plate portion and the first front bottom plate portion formed on the object, and from the front side portion of the first front bottom plate portion A first front-side standing plate portion, which is provided upwardly and in parallel with the first front plate portion via a broken line, is provided continuously from the left side of the first upper surface plate portion, and is substantially perpendicular to the first upper surface plate portion. And a first side plate portion provided with an opening for locking the first projecting piece portion, and a side portion opposite to the first upper surface plate portion side of the first side plate portion. And a first insertion piece portion to be inserted inside the first rear bottom surface plate portion and the first front bottom surface plate portion, and the right base portion is formed by a single sheet-like paper blank. And A second upper surface plate portion whose length in the front-rear direction is shorter than the length in the front-rear direction of the second bottom surface portion, and a lower side from the side portion on the back surface side of the second upper surface plate portion via a broken line And a second back plate portion having a rectangular shape that is connected to the second upper surface plate portion at a substantially right angle and whose length in the height direction is shorter than the length in the height direction of the second back surface portion. It is connected to the front side through a broken line from the lower side of the back plate part, and the length in the front-rear direction is shorter than the length in the front-rear direction of the second upper face plate part, and is provided substantially parallel to the second upper face plate part. The second rear side bottom plate portion, and the second rear side standing plate that is connected to the upper side of the second rear side bottom plate portion from the front side of the second rear side bottom plate portion through a broken line and substantially parallel to the second rear plate portion. And a second front plate portion formed symmetrically with the second back plate portion, and a lower side of the second back plate portion. From the front side of the second front side bottom plate part and the second front side bottom plate part formed on the front side of the second rear side bottom plate part and the target, A second front standing plate portion that is provided above and substantially parallel to the second front plate portion, and a right side of the second upper surface plate portion, and is formed substantially perpendicular to the second upper surface plate portion, A second side plate portion provided with an opening for locking the second protruding piece portion, and a side portion opposite to the second upper surface plate portion side of the second side plate portion; A rear base plate portion and a second insertion piece portion to be inserted inside the second front base plate portion, and one of the left base portion and the right base portion is inserted into the other so that the left base portion and the right base portion are inserted. The first projecting piece is inserted into the opening of the first side plate and the second projecting piece is inserted into the opening of the second side plate. The base part is attached to the main body part.

  In the telescopic shelf having the first configuration, since the base portion is provided, not only the top surfaces of the first bottom surface plate portion and the second bottom surface portion of the main body portion but also the top surface of the base portion (first top surface plate portion and It can also be placed on the upper surface of the second upper surface plate portion.

  Moreover, since each part which comprises an expansion-contraction shelf is formed with the paper-made blanks, it can make it easy to discard. Moreover, since each part which comprises an expansion-contraction shelf is paper, the new utilization method of the raw material can be provided by using the raw material which is not used conventionally as an expansion-contraction shelf.

  Moreover, since the expansion / contraction shelf can be expanded / contracted between the extended state and the contracted state, the length of the expansion / contraction shelf can be adjusted according to the size of the space on which the expansion / contraction shelf is placed. In particular, the left base is locked to the left main body by the first projecting piece, and the right base is locked to the right main body by the second projecting piece. The part can also be expanded and contracted.

  Further, in the left main body and the right main body, the back surface is formed by a front back plate and a rear back plate, and the front is divided into a front front plate and a rear front plate. The side part is formed in triplicate with the outer side plate part, the inner side plate part, and the intermediate side plate part, so that sufficient strength of the main body part can be obtained even if it is formed by a paper blank. Can do.

  Also in the pedestal part, in the left pedestal part and the right pedestal part, a top plate part, a back plate part, a rear bottom plate part, a rear standing plate part, a front plate part, and a front bottom plate In particular, since the pair of upright plate parts are provided on each of the left side base part and the right side base part, the strength of the base part can be obtained.

  Second, in the first configuration, the back surface portion of one main body portion of the left main body portion and the right main body portion is inserted into the back surface portion of the other main body portion, and the front portion of the one main body portion is The left main body and the right main body are inserted into the front of the other main body, and at least a part of the bottom of the one main body is positioned on the upper surface of the bottom of the other main body. In the case of being slidable, the bottom surface of the one main body portion is continuously connected from the side opposite to the side surface side of the one main body portion via a broken line, and is folded back to the lower surface side of the bottom surface portion. A strip-shaped first bottom face part drop-off preventing piece bonded to the bottom face of the bottom face part and a fold line from the side part of the bottom face part of the other body part opposite to the side face side of the other body part. And is folded back to the upper surface side of the bottom surface to A strip-shaped second bottom surface part drop-off preventing piece bonded to the side, and a broken line from a side of the rear side plate of the one main body opposite to the side of the side of the one main body A first back portion drop-off preventing piece that is connected to the back side of the rear back plate portion and bonded to the back surface of the rear back plate portion, and the rear side of the other main body portion. A back plate is connected from the side opposite to the side of the side of the other main body via a fold line, folded back to the front side of the rear back plate, and in front of the rear back plate. When the left main body portion and the right main body portion are extended in the direction in which the telescopic shelf extends, the pair of drop prevention pieces are locked. The first bottom face part fall-off prevention piece part and the second bottom face part drop-off prevention piece part are locked, and the first back face part fall-off prevention piece part and the second back face part And a drop prevention piece, characterized in that to prevent the the left body portion and the right body portion engaged is disengaged. Therefore, even when the main body is extended, the left main body and the right main body do not fall off.

  Thirdly, in the first or second configuration, the back portion of one of the main body portions of the left main body portion and the right main body portion is inserted into the back surface portion of the other main body portion. The front part is inserted into the front part of the other body part, and at least a part of the bottom part of the one body part is located on the top surface of the bottom part of the other body part, so that the left body part and the right body part Are mutually slidable, a substantially strip-shaped horizontal plate portion is continuously provided on the back side from the lower side of the rear front plate portion of the one main body portion via a broken line, and the rear positive plate extends from the horizontal plate portion. A sliding plate portion provided substantially parallel to the face plate portion with a gap is provided between the rear plate portion and the rear plate portion of the other main body portion. The horizontal plate portion and the rear plate portion of the one main body portion. It is characterized by sliding in a state sandwiched between. Thereby, the front part of the left main body part and the front part of the right main body part slide smoothly, and as a result, the left main body part and the right main body part can be slid smoothly.

  Fourthly, in any one of the first to third configurations, one of the left base and the right base is inserted into the other base so that the left base and the right base are Are formed so as to be slidable with respect to each other, are connected from the upper end of the rear standing plate portion of the other base portion via a fold line, and are folded back to the front side of the rear standing plate portion to A rear adhesive plate part bonded to the front side of the installation plate part, the length in the height direction being shorter than the length in the height direction of the rear side installation plate part; and A belt-like rear erection plate part provided continuously from the lower side of the rear adhesive plate part to the front side via a fold line, and connected via a fold line from the upper end of the front standing plate part of the other base part, It is a front adhesive plate part that is folded back to the back side of the front standing plate part and bonded to the back side of the front standing plate part, and its length in the height direction is the height of the front standing plate part. A front-side adhesive plate part formed shorter than the length in the direction, and a belt-like front-side erection plate part connected via a broken line from the lower side of the front-side adhesive plate part to the front side. It is characterized in that the side erection plate portion is connected. Therefore, since the pair of upright plate parts are bridged by connecting the rear side installation plate part and the front side installation plate part, the strength can be further increased.

  In the fifth aspect, in any one of the first to fourth configurations, the back surface portion of one main body portion of the left main body portion and the right main body portion is inserted into the back surface portion of the other main body portion, The front portion of the main body portion is inserted into the front portion of the other main body portion, and at least a part of the bottom surface portion of the one main body portion is positioned on the upper surface of the bottom surface portion of the other main body portion. And the right-side main body portion are slidable with each other, the other main body portion has an upper side of the rear rear plate portion and an upper side of the front rear plate portion between the rear rear plate portion and the front rear plate portion. A belt-like belt-like plate portion is provided on the rear back plate portion and the front back plate portion via a broken line, and between the front front plate portion and the rear front plate portion, the upper side of the front front plate portion and A belt-like band-shaped plate portion is formed along the upper side of the rear-side front plate portion, and the front-side front plate portion and the rear-side front plate portion And it is provided via a line. Thereby, in the back surface part and front part of the other main body part, a space into which the back surface part and front part of the one main body part are inserted can be formed.

  Sixthly, in any one of the first to fifth configurations, the blank constituting the left main body, the right main body, the left base, and the right base is made of cardboard. To do.

  Seventh, an expansion and contraction shelf, which has a main body and a base, and the main body has a left main body and a right main body that slides with respect to the left main body. The main body portion is formed of a single sheet-like cardboard blank, and is erected from a rectangular plate-like first bottom surface portion and a side portion on the back side of the first bottom surface portion via a broken line. A rectangular first rear back plate portion and a first front back of a square shape provided in a continuous manner from the upper side of the first rear back plate portion via a broken line and substantially parallel to the first rear back plate portion. From the upper surface of the 1st back part which has the 1st back part which has a face plate part, the square 1st front side front board part erected through the broken line from the side part of the front side of the 1st bottom part, and the 1st front side front board part A square first rear front plate provided in parallel with the first front front plate on the back side of the first front front plate and provided substantially parallel to the first front plate. The first front part, whose upper end is lower than the upper end of the rear part, and a substantially trapezoidal shape standing on the left side of the bottom part via a broken line, the upper side of the rear part from the front side. A first outer side plate portion that is inclined upward toward the side, and a first band formed along the upper side of the first outer side plate portion that is continuous from the upper side of the first outer side plate portion to the right side via a broken line. 1 side face strip-shaped plate portion and a first inner side plate portion that is provided from the side on the right side of the first side face strip shaped strip portion via a broken line and provided substantially parallel to the first outer side plate portion, It has a trapezoidal shape with an upper side inclined upward from the front side toward the back side, and has an opening for projecting the first projecting piece portion continuously provided from the first intermediate side plate portion to the right side surface side. The first inner side plate portion and the left side of the first front side rear plate portion or the first rear side rear plate portion are connected via a broken line. A first intermediate side plate provided between the first outer side plate and the first inner side plate, and an opening formed in the region inside the first intermediate side plate from the opening of the first inner side plate. A first side surface portion having a first protruding piece portion protruding to the right side surface side, and the right side main body portion is formed of a single sheet-like cardboard blank, and has a square shape. The plate-like second bottom surface portion is erected via a broken line from a second bottom surface portion in which a region on the left side overlaps the upper surface of the first bottom surface portion, and a side portion on the back surface side of the second bottom surface portion. A square second rear back plate part and a square second front back provided continuously from the upper side of the second rear back plate part via a broken line and substantially parallel to the second rear back plate part. A second rear front plate having a face plate portion, and a square front second front plate portion erected from the side of the front side of the second bottom surface portion via a broken line. And a second rear front plate having a rectangular shape, which is provided continuously from the upper side of the second front front plate portion via a broken line and provided substantially parallel to the second front front plate portion on the back side of the second front front plate portion. A second front part formed at a lower end than the upper end of the rear part, and a substantially trapezoidal shape standing from the right side of the bottom part via a broken line. A second outer side plate portion whose upper side is inclined upward from the front side toward the rear side, and a second side plate portion provided on the left side via a broken line from the upper side of the second outer side plate portion along the upper side of the second outer side plate portion. A second side surface belt-shaped plate portion formed in a band shape and a second side surface portion provided on the left side surface side of the second side surface portion belt-shaped plate portion via a broken line and substantially parallel to the second outer side plate portion. The inner side plate part has a substantially trapezoidal shape with its upper side inclined upward from the front side toward the rear side, and the second intermediate side plate part A second inner side plate portion having an opening for projecting the second projecting piece portion provided continuously to the left side, and a right side of the second front side rear plate portion or the second rear side rear plate portion via a broken line. A second intermediate side plate provided continuously between the second outer side plate and the second inner side plate, and a second inner side plate formed by forming a notch in the region inside the second intermediate side plate. And a second side piece having a second protruding piece protruding from the opening to the left side, and the back part of either the right main part or the left main part is inserted into the other back part. In addition, since the front portion on the one side is inserted into the front portion on the other side and at least a part of the bottom surface portion on the one side is located on the upper surface of the bottom surface portion on the other side, It is formed to be slidable, and the base part is on the left base part and the left base part. The left base part is formed of a single sheet-like cardboard blank and has a square shape, and the length in the front-rear direction is the front-rear direction of the first bottom part. A first upper surface plate portion formed shorter than the length of the first upper surface plate portion, and a side surface on the back side of the first upper surface plate portion, which is connected to the first upper surface plate portion at a substantially right angle downward via a broken line. The first back plate portion having a rectangular shape formed shorter than the length in the height direction of the first back portion, and the lower side of the first back plate portion is connected to the front side via a broken line, A first rear bottom plate portion having a length in the front-rear direction shorter than a length in the front-rear direction of the first upper surface plate portion and provided substantially parallel to the first upper surface plate portion; A first rear side standing plate portion that is connected upward and parallel to the first back plate portion from the front side through a broken line, and the front side of the first top plate portion A first front plate portion that is provided in a downward direction from the side portion of the first back plate portion and symmetrically formed with the first back plate portion, and is provided on the front side from the lower side of the first back plate portion through the broken line. The first front side bottom plate part, the first front side bottom plate part formed on the object, and the side on the front side of the first front side bottom plate part upwardly through the broken line and substantially parallel to the first front plate part The first front side standing plate portion provided continuously and the left side of the first upper surface plate portion, are formed substantially at right angles to the first upper surface plate portion, and the first projecting piece portion is for locking. A first side face plate part provided with an opening and a side part opposite to the first top face plate part side of the first side face plate part, and are connected to the first rear bottom face plate part and the first front bottom face plate. A first insertion piece portion that is inserted inside the portion, and the right base portion is formed of a single sheet-like corrugated blank and has a rectangular shape and is long in the front-rear direction. A second upper surface plate portion formed shorter than the length of the second bottom surface portion in the front-rear direction, and substantially perpendicular to the second upper surface plate portion downward from the side portion on the back side of the second upper surface plate portion via a broken line. A square-shaped second back plate portion that is continuously provided and whose length in the height direction is shorter than the length in the height direction of the second back portion, and a broken line from the lower side of the second back plate portion A second rear bottom surface plate portion provided on the front side, the length in the front-rear direction being shorter than the length in the front-rear direction of the second upper surface plate portion, and provided substantially parallel to the second upper surface plate portion; A second rear side standing plate portion that is provided continuously from the side portion on the front side of the second rear side bottom plate portion via a broken line and substantially parallel to the second back plate portion, and the front surface of the second upper surface plate portion. A second front plate portion that is provided downward from the side portion through a broken line and formed symmetrically with the second back plate portion; and from the lower side of the second back plate portion to the front side through the broken line. A second front bottom plate portion formed on the second rear side bottom plate portion, and a second front plate portion upward from a side portion on the front side of the second front bottom plate portion via a broken line. A second front standing plate portion that is connected in parallel and a right side of the second upper surface plate portion, are formed substantially perpendicular to the second upper surface plate portion, and the second protruding piece portion is locked. A second side plate provided with an opening for the second side plate, and a second side plate on the side opposite to the second top plate side of the second side plate, and the second rear bottom plate and the second front side A second insertion piece inserted into the inside of the bottom plate, and one of the left base and the right base is inserted into the other so that the left base and the right base are slidable with each other. The base is attached to the main body by inserting the first protruding piece into the opening of the first side plate and the second protruding piece into the opening of the second side plate. The back part of one body part in the left body part and the right body part is inserted into the back part of the other body part, and the front part of the one body part is inserted into the front part of the other body part. When the left main body and the right main body are slidable with each other by positioning at least a part of the bottom surface of the one main body on the upper surface of the bottom surface of the other main body, A belt-like shape in which the bottom surface of the main body is connected from the side opposite to the side of the side of the main body via a fold line, folded back to the bottom of the bottom and bonded to the bottom of the bottom The first bottom face part drop-off preventing piece part and a side part of the bottom face part of the other body part opposite to the side face side of the other body part are connected via a broken line, A band-shaped second bottom surface portion that is folded back to the upper surface side and bonded to the upper surface of the bottom surface portion A drop-preventing piece, and connected to the rear side of the rear back plate portion of the one main body portion through a broken line from the side opposite to the side surface side of the one main body portion. A first back surface drop-off preventing piece portion that is folded back to the back side of the back plate portion and adhered to the back surface of the back back plate portion; and the other main body portion of the back back plate portion of the other main body portion. For preventing the second back surface portion from falling off from the side portion opposite to the side surface portion via a broken line, folded back to the front side of the rear back plate portion, and adhered to the front surface of the rear back plate portion. The first bottom face part fall-off prevention piece part is retained by the pair of fall-off prevention piece parts when the left body part and the right body part are extended in the direction in which the telescopic shelf extends. And the second bottom face drop-off prevention piece are locked, and the first back face drop-off prevention piece and the second back face drop-off prevention piece are locked to the left side. The body part and the right body part are prevented from coming off, the back part of one body part in the left body part and the right body part is inserted into the back part of the other body part, and the front part of the one body part is The left main body and the right main body are inserted into the front of the other main body, and at least a part of the bottom of the one main body is positioned on the upper surface of the bottom of the other main body. In the case of being slidable, a substantially strip-shaped horizontal plate portion is continuously provided on the back side through a broken line from the lower side of the rear front plate portion in the one main body portion, and from the horizontal plate portion to the rear front plate portion. A slide plate provided substantially in parallel with an interval is erected, and the rear front plate of the other main body is sandwiched between the horizontal plate and the rear front plate of the one main body. And slide one base on the left base and right base into the other base. When the left pedestal and the right pedestal are formed so as to be slidable from each other, the other pedestal is connected continuously from the upper end of the rear erection plate part via a broken line, It is a rear side standing plate part that is folded back to the front side of the plate part and bonded to the front side of the rear side standing plate part, and its length in the height direction is longer than the length in the height direction of the rear side standing plate part A rear standing plate portion formed in a short length, a belt-like rear construction plate portion continuous from the lower side of the rear side standing plate portion to the front side via a broken line, and a front side standing portion of the other base portion It is a front standing plate part that is connected from the upper end of the installation plate part via a fold line, folded back to the back side of the front side installation plate part, and bonded to the back side of the front side installation plate part. A front standing plate portion formed shorter than the length of the front standing plate portion in the height direction, and a belt-like front frame that is connected to the front side from the lower side of the front standing plate portion via a broken line. A plate portion is provided, the front erection plate portion and the rear erection plate portion are coupled, and the back surface portion of one body portion of the left body portion and the right body portion is inserted into the back surface portion of the other body portion, The front part of one main body part is inserted into the front part of the other main body part, and at least a part of the bottom surface part of the one main body part is positioned on the upper surface of the bottom surface part of the other main body part. And the right body part are slidable with respect to each other, in the other body part, between the rear back plate part and the front back plate part, the upper side of the rear back plate part and the front back plate part A belt-like band-shaped plate portion is provided along the upper side via a broken line on the rear back plate portion and the front back plate portion, and the upper side of the front front plate portion is between the front front plate portion and the rear front plate portion. And a belt-like belt-like plate portion along the upper side of the rear-side front plate portion into a front-side front plate portion and a rear-side front plate portion. And it is provided through which rays.

  According to the telescopic shelf according to the present invention, since the base portion is provided, not only the top surfaces of the first bottom surface plate portion and the second bottom surface portion of the main body portion but also the top surface of the base portion (the first top surface plate portion and the first top surface plate portion). 2 can also be placed on the upper surface of the upper surface plate portion.

  Moreover, since each part which comprises an expansion-contraction shelf is formed with the paper-made blanks, it can make it easy to discard. Moreover, since each part which comprises an expansion-contraction shelf is paper, the new utilization method of the raw material can be provided by using the raw material which is not used conventionally as an expansion-contraction shelf.

  Moreover, since the expansion / contraction shelf can be expanded / contracted between the extended state and the contracted state, the length of the expansion / contraction shelf can be adjusted according to the size of the space on which the expansion / contraction shelf is placed. In particular, the left base is locked to the left main body by the first projecting piece, and the right base is locked to the right main body by the second projecting piece. The part can also be expanded and contracted.

  Further, in the left main body and the right main body, the back surface is formed by a front back plate and a rear back plate, and the front is divided into a front front plate and a rear front plate. The side part is formed in triplicate with the outer side plate part, the inner side plate part, and the intermediate side plate part, so that sufficient strength of the main body part can be obtained even if it is formed by a paper blank. Can do.

  Also in the pedestal part, in the left pedestal part and the right pedestal part, a top plate part, a back plate part, a rear bottom plate part, a rear standing plate part, a front plate part, and a front bottom plate In particular, since the pair of upright plate parts are provided on each of the left side base part and the right side base part, the strength of the base part can be obtained.

It is a front perspective view of an expansion-contraction shelf. It is a front disassembled perspective view of an expansion-contraction shelf. It is a front perspective view of the state where an expansion shelf was contracted. It is a back perspective view of an expansion-contraction shelf. It is a back perspective view of the state where the expansion shelf was contracted. It is a principal part rear perspective view of an expansion-contraction shelf. It is a disassembled perspective view of a main-body part. It is a disassembled perspective view of a base part. It is a perspective view of the state which turned the left base part upside down. It is a perspective view of the state which turned the right side base part upside down. It is an expanded view of the left side main-body part. It is an expanded view of a right side main-body part. It is an expanded view of a left side stand part. It is an expanded view of a right side base part. It is a perspective view which shows the assembly process of a left side main-body part. It is a perspective view which shows the assembly process of a right side main-body part. It is a perspective view which shows the assembly process of a left side base part. It is a perspective view which shows the assembly process of a left side base part. It is a perspective view which shows the assembly process of a right side base part.

  In the present invention, the object of providing a new usage method of the material was realized as follows by providing a telescopic shelf that can be easily disposed of and using a material that has not been conventionally used as the telescopic shelf.

  The telescopic shelf 5 based on this invention is comprised as shown in FIGS. 1-14, and has the main-body part 10 and the base part 110 attached to the main-body part 10. FIG. In the drawings, the Y1-Y2 direction is a direction perpendicular to the X1-X2 direction, and the Z1-Z2 direction is a direction perpendicular to the X1-X2 direction and the Y1-Y2 direction.

  Here, the main body 10 has a left main body 20 that forms the left side and a right main body 60 that forms the right side when the main body 10 is viewed from the front.

  As shown in FIGS. 1 to 7, the left main body portion 20 includes a bottom surface portion (first bottom surface portion) 22, and a back surface portion (first back surface portion) 25 erected from an end portion on the back surface side of the bottom surface portion 22. And a front portion (first front portion) 45 erected from the front end of the bottom portion 22 and a side portion (first side portion) 31 erected from the left end of the bottom portion 22. ing. From the side part 31, the protrusion piece part 40 for latching the left side base part 120 protrudes inside, and is provided.

  The bottom surface portion 22, the back surface portion 25, and the front surface portion 45 each have a substantially rectangular plate shape, but the length of the back surface portion 25 in the height direction is longer than the length of the front surface portion 45 in the height direction. Yes. The back surface portion 25 is formed in a substantially U-shaped cross section so that the back surface portion 65 of the right main body portion 60 can be inserted. The front portion 45 is formed in a substantially U-shaped cross section so that the front portion 85 of the right main body portion 60 can be inserted. Further, the side surface portion 31 is formed in a substantially trapezoidal plate shape, and its upper end is inclined with respect to the bottom surface portion 22 so that the length in the height direction increases from the front side to the back side. ing.

  The details of the left main body 20 will be described with reference to FIG. 11. The left main body 20 is formed of a single sheet-like blank (specifically, cardboard), and has a bottom surface 22 and a drop-off prevention. A plate part (first bottom part drop prevention plate part) 24, a rear back plate part (first rear side back plate part) 26, and a drop prevention plate part (first back part drop prevention plate part) 28. A belt-like plate portion 29, a front-side back plate portion (first front-side back plate portion) 30, an outer-side plate portion (first outer-side plate portion) 32, and a belt-like plate portion (first side-face-side plate portion) 34. , Inner side plate portion (first inner side plate portion) 36, intermediate side plate portion (first intermediate side plate portion) 38, protruding piece portion (first protruding piece portion) 40, continuous side plate portion 42, and continuous side plate. Portion 44, front side front plate portion (first front side front plate portion) 46, belt-like plate portion 47, rear side front plate portion (first rear side front plate portion) 48, and connecting plate portion 5. If has a continuous up plate portion 52, and a communicating up plate portion 54.

  Here, the bottom surface portion 22 has a rectangular (rectangular) plate shape, and a pair of rectangular hole portions 22a are provided at intervals along the side portion on the X1 side. The hole 22 a is for inserting the protruding portion 36 a at the lower end of the inner side plate portion 36. Further, the drop-off prevention plate portion 24 is continuously provided from one short side (side portion on the X2 side) of the bottom surface portion 22 via a broken line. The drop prevention plate portion 24 is formed in a band shape along the short side of the bottom surface portion 22. The drop prevention plate portion 24 is bent with respect to the bottom surface portion 22 and bonded to the upper surface of the bottom surface portion 22 (the upper surface in the assembled state). That is, an adhesive is applied to a portion (see FIG. 11) indicated by hatching of the drop-off prevention plate portion 24 and adhered to the upper surface of the bottom surface portion 22.

  In addition, the rear rear plate part 26 is continuously provided from the rear side end part (long side on the rear side) of the bottom part 22 via a broken line, and has a rectangular shape (rectangular shape). Further, the drop-off prevention plate portion 28 has a rectangular shape, and is provided from the end region on the Y2 side of the side portion on the X2 side of the rear back plate portion 26 via a broken line. The drop-preventing plate 28 is bent with respect to the rear back plate 26 and bonded to the front surface (the front surface in the assembled state) of the rear back plate 26. That is, an adhesive is applied to a portion (see FIG. 11) indicated by hatching of the drop prevention plate portion 28 to adhere to the front side surface of the rear back plate portion 26. Moreover, the strip | belt-shaped board part 29 is continuously provided through the broken line from the edge part by the side of Y2 of the back side rear board part 26, and is exhibiting strip | belt shape. In addition, you may abbreviate | omit the structure of this strip | belt-shaped board part 29. FIG. Further, the front rear plate part 30 is connected from the side on the Y2 side of the belt-like plate part 29 via a broken line, has a rectangular shape (rectangular shape), and is formed in substantially the same shape as the rear rear plate part 26. (Strictly speaking, it is formed slightly smaller). The back side plate part 26, the belt-like plate part 29, and the front side back plate part 30 constitute the back part 25, and in the assembled state, it is formed in a substantially U-shaped cross section.

  In addition, the outer side plate portion 32 is continuously provided from the side portion on the X1 side of the bottom surface portion 22 via a broken line, and has a substantially trapezoidal shape. In other words, the side portion of the outer side plate portion 32 opposite to the bottom surface portion 22 is formed to be inclined with respect to the side portion of the bottom surface portion 22 on the X1 side. Moreover, the strip | belt-shaped board part 34 is continuously provided via the broken line from this inclined side part of the outer side board | plate part 32, and is exhibiting strip | belt shape. The belt-like plate portion 34 is provided to form a space for providing the intermediate side plate portion 38 and the continuous side plate portions 42 and 44 between the outer side plate portion 32 and the inner side plate portion 36. In addition, you may abbreviate | omit the structure of this strip | belt-shaped board part 34. FIG. Further, the inner side plate portion 36 is connected from the side portion of the belt-like plate portion 34 opposite to the outer side plate portion 32 via a broken line, and has a substantially trapezoidal shape. That is, the inner side plate portion 36 is formed in substantially the same shape and shape as the outer side plate portion 32 (strictly, it is formed slightly smaller), and is a rectangular protruding portion from the side opposite to the belt-like plate portion 34. 36a is formed. Further, the inner side plate portion 36 is formed with a vertically long opening 36b for the protruding piece portion 40 to protrude.

  Further, an intermediate side plate portion 38 is continuously provided from a side portion on the X1 side of the front side rear plate portion 30 via a broken line. The intermediate side plate portion 38 has an outer shape in which a part of the trapezoidal shape is cut off, that is, a shape in which a substantially rectangular cutout portion 38a is formed from the trapezoidal shape so that the continuous plate portion 50 is disposed. Yes. The notched portion is a lower end region on the front side in the assembled state of the left main body portion 20. A projecting piece 40 is formed inside the intermediate side plate 38 by a cut 40a and a broken line formed between the two ends of the cut 40a. When the protruding piece 40 is bent with respect to the intermediate plate 38, a groove is formed on the upper side between the protruding piece 40 and the intermediate plate 38, and the left base 120 is locked to the groove. It is like that.

  Further, the continuous side plate portion 42 is connected from the side portion on the Y2 side of the outer side plate portion 32 via a broken line, and has a substantially triangular shape. Further, the continuous side plate portion 44 is connected from the side portion on the X1 side of the rear rear plate portion 26 via a broken line, has a substantially triangular shape, and is also connected to the continuous side plate portion 42 via the broken line. Yes. As shown in FIG. 15, the continuous side plate portions 42 and 44 are folded and stored between the outer side plate portion 32 and the inner side plate portion 36.

  Moreover, the front side front board part 46 is continuously provided via the broken line from the edge part by the side of Y1 of the bottom face part 22, and is exhibiting the substantially rectangular shape. Moreover, the strip | belt-shaped board part 47 is continuously provided via the broken line from the edge part on the opposite side to the bottom face part 22 side of the front board part 46, and is exhibiting strip | belt shape. The configuration of the belt-like plate portion 47 may be omitted. Moreover, the rear side front board part 48 is connected from the side part on the opposite side to the front side front board part 46 side of the strip | belt-shaped board part 47 via a broken line, and is exhibiting the substantially rectangular shape. That is, the rear side front plate portion 48 is formed in the same size and shape as the front side front plate portion 46 (strictly, slightly smaller). The front side front plate portion 46, the belt-like plate portion 47, and the rear side front plate portion 48 constitute a front portion 45, which is formed in a substantially U-shaped cross section in the assembled state.

  Moreover, the continuous board part 50 is connected from the side part by the side of X1 of the rear side front board part 48 via a broken line, and is exhibiting the substantially square shape. In the assembled state of the left main body portion 20, the continuous plate portion 50 is disposed in the cutout portion 38 a of the intermediate side plate portion 38 and is sandwiched between the outer side plate portion 32 and the inner side plate portion 36. Further, the continuous side plate portion 52 is provided continuously from the side portion on the X1 side of the front side front plate portion 46 via a broken line, and has a substantially triangular shape. In addition, the continuous side plate portion 54 is connected from the side on the Y1 side of the outer side plate portion 32 via a broken line, has a substantially triangular shape, and is also connected to the continuous side plate portion 52 via the broken line. As shown in FIG. 15, the continuous side plate portions 52 and 54 are folded and stored between the outer side plate portion 32 and the continuous plate portion 50.

  When the left body 20 is assembled, the drop prevention plate 24 is bonded to the upper surface of the bottom surface 22 (the upper surface in the assembled state), and the drop prevention plate 28 is attached to the front side of the rear back plate 26 ( As shown in FIG. 15, the rear back plate portion 26 is bent with respect to the bottom portion 22 and is erected, and the belt-like plate portion 29 is made to stand on the rear back plate portion 26. Further, the front back plate portion 30 is bent with respect to the belt-like plate portion 29 so that the rear back plate portion 26 and the front back plate portion 30 are parallel to each other. In addition, the front side front plate part 46 is bent with respect to the bottom surface part 22, and the belt-like plate part 47 is bent with respect to the front side front plate part 46, and the rear side front plate part 48 is made into the belt-like plate part 47. The front side front plate part 46 and the rear side front plate part 48 are made parallel to each other.

  Further, the intermediate side plate portion 38 is bent with respect to the front back plate portion 30, and the continuous plate portion 50 is bent with respect to the rear front plate portion 48. Further, the continuous side plate portion 42 and the continuous side plate portion 44 are provided. Folded inward so that they overlap, and bent inward so that the connecting plate portion 52 and the connecting plate portion 54 overlap, the outer side plate portion 32 is erected with respect to the bottom surface portion 22, and the inner side plate portion 36 is intermediate The protruding portion 36 a is fitted into the opening 22 a of the bottom surface portion 22 so as to be disposed inside the side plate portion 38. At this time, the protruding piece 40 is exposed from the opening 36b. As a result, the protruding piece 40 protrudes at a right angle with respect to the inner side plate portion 36. As described above, the left main body 20 is formed.

  As shown in FIGS. 1 to 7, the right main body 60 includes a bottom surface portion (second bottom surface portion) 62, and a back surface portion (second back surface portion) 65 erected from an end portion on the back surface side of the bottom surface portion 62. The front portion (second front portion) 85 is erected from the front end of the bottom portion 62, and the side portion (second side portion) 71 is erected from the right end of the bottom portion 62. ing. From the side part 71, the protrusion piece part 80 for latching the right side base part 160 protrudes inside, and is provided.

  The bottom surface portion 62, the back surface portion 65, and the front surface portion 85 all have a substantially rectangular plate shape, but the length of the back surface portion 65 in the height direction is longer than the length of the front surface portion 85 in the height direction. Yes. Further, the side surface portion 71 is formed in a substantially trapezoidal plate shape, and its upper end is inclined with respect to the bottom surface portion 62 so that the length in the height direction becomes longer from the front side to the back side. ing.

  The details of the right body portion 60 will be described with reference to FIG. 12. The right body portion 60 is formed of a single sheet-like blank (specifically, cardboard), and has a bottom surface portion 62 and a drop-off prevention member. A plate part (second bottom surface part drop prevention plate part) 64, a rear back plate part (second rear side back plate part) 66, and a drop prevention plate part (second back surface part drop prevention plate part) 68. Front side rear plate part (second front side rear plate part) 70, outer side plate part (second outer side plate part) 72, belt-like plate part (second side face part belt-like plate part) 74, inner side plate part (first 2 inner side plate portion) 76, intermediate side plate portion (second intermediate side plate portion) 78, protruding piece portion (second protruding piece portion) 80, continuous side plate portion 82, continuous side plate portion 84, and front positive plate A face plate portion (second front side front plate portion) 86, a rear side front plate portion (second rear side front plate portion) 88, a horizontal plate portion 90, and a slide plate portion 92 are provided continuously. And parts 94, a connecting up plate portion 96, and a communicating up plate portion 98.

  Here, the bottom surface portion 62 has a rectangular (rectangular) plate shape, and a pair of rectangular hole portions 62a are provided at intervals along the side portion on the X2 side. The hole 62 a is for inserting the protruding portion 76 a at the lower end of the inner side plate portion 76. The length of the bottom surface portion 62 in the Y1-Y2 direction is such that the back surface portion 65 is inserted into the back surface portion 25 of the left main body portion 20 and the front surface portion 85 is inserted into the front surface portion 45 of the left main body portion 20. The portion 22 is formed slightly shorter than the length in the Y1-Y2 direction. Further, the drop-off prevention plate portion 64 is continuously provided from one short side (side portion on the X1 side) of the bottom surface portion 62 via a broken line. The drop-off prevention plate portion 64 is formed in a band shape along the short side of the bottom surface portion 62. The drop prevention plate portion 64 is bent with respect to the bottom surface portion 62 and bonded to the lower surface of the bottom surface portion 62 (the lower surface in the assembled state). That is, an adhesive is applied to a portion (see FIG. 12) indicated by hatching of the drop-off prevention plate portion 64 to adhere to the lower surface of the bottom surface portion 62.

  In addition, the rear rear plate portion 66 is continuously provided from the rear side end portion (long side on the rear side) of the bottom surface portion 62 via a broken line, and has a rectangular shape (rectangular shape). The length in the Y1-Y2 direction of the rear back surface portion 66 is larger than the length in the Y1-Y2 direction of the rear back surface portion 26 because the back surface portion 65 is inserted into the back surface portion 25 of the left main body portion 20. It is formed slightly shorter. Further, the drop-off prevention plate portion 68 has a rectangular shape, and is provided from the end region on the Y2 side of the side portion on the X1 side of the rear back plate portion 66 via a broken line. The drop-off prevention plate portion 68 is bent with respect to the rear side back plate portion 66 and bonded to the back side surface (the back side surface in the assembled state) of the rear side back plate portion 66. That is, an adhesive is applied to a portion (see FIG. 12) indicated by hatching of the drop prevention plate portion 68 to adhere to the back side surface of the rear back plate portion 66.

  Further, the front back plate portion 70 is connected from the side on the Y2 side of the rear back plate portion 66 via a broken line, has a rectangular shape (rectangular shape), and has substantially the same shape as the rear back plate portion 66. (Strictly speaking, it is formed slightly smaller). The length of the front back plate 70 in the Y1-Y2 direction is slightly longer than the length of the front back 30 in the Y1-Y2 direction because the back 65 is inserted into the back 25 of the left main body 20. It is short. The rear back plate portion 66 and the front back plate portion 70 constitute a back surface portion 65.

  Further, the outer side plate portion 72 is connected from the side portion on the X2 side of the bottom surface portion 62 via a broken line, and has a substantially trapezoidal shape. That is, the side portion of the outer side plate portion 72 opposite to the bottom surface portion 62 is formed to be inclined with respect to the side portion of the bottom surface portion 62 on the X2 side. Moreover, the strip | belt-shaped board part 74 is continuously provided through the broken line from this inclined side part of the outer side side board | plate part 72, and is exhibiting strip | belt shape. The belt-like plate portion 74 is provided to form a space for providing the intermediate side plate portion 78 and the continuous side plate portions 82 and 84 between the outer side plate portion 72 and the inner side plate portion 76. In addition, you may abbreviate | omit the structure of this strip | belt-shaped board part 74. FIG. Moreover, the inner side plate part 76 is connected from the side part on the opposite side to the outer side plate part 72 of the strip | belt-shaped board part 74 via a broken line, and is exhibiting the substantially trapezoid shape. In other words, the inner side plate portion 76 is formed in substantially the same shape and shape as the outer side plate portion 72 (strictly, it is formed slightly smaller), and a rectangular protrusion from the side opposite to the belt-like plate portion 74. 76a is formed. Further, the inner side plate portion 76 is formed with a vertically long opening 76b for the protruding piece 80 to protrude.

  Further, an intermediate side plate portion 78 is connected from the side portion on the X2 side of the front side rear plate portion 70 via a broken line. The intermediate side plate portion 78 has an outer shape in which a part of the trapezoidal shape is cut out, that is, a shape in which a substantially rectangular cutout portion 78a is formed so that the continuous plate portion 94 is arranged from the trapezoidal shape. Yes. The notched portion is a lower end region on the front side in the assembled state of the right body portion 60. Further, a protruding piece 80 is formed inside the intermediate side plate 78 by a cut 80a and a broken line formed between the two ends of the cut 80a. When the protruding piece 80 is bent with respect to the intermediate plate 78, a groove is formed on the upper side between the protruding piece 80 and the intermediate plate 78, and the right base 160 is locked to the groove. It is like that.

  The continuous side plate portion 82 is connected from the side on the Y2 side of the outer side plate portion 72 via a broken line, and has a substantially triangular shape. Further, the continuous side plate portion 84 is connected to the side portion on the X2 side of the rear rear plate portion 66 via a broken line, has a substantially triangular shape, and is also connected to the continuous side plate portion 82 via the broken line. Yes. As shown in FIG. 16, the continuous side plate portions 82 and 84 are folded and stored between the outer side plate portion 72 and the inner side plate portion 76.

  Moreover, the front side front board part 86 is connected from the edge part by the side of Y1 of the bottom face part 62 via a broken line, and is exhibiting the substantially rectangular shape. Further, the rear side front plate part 88 is continuously connected via a broken line from the side opposite to the bottom surface part 62 side of the front side front plate part 86, and the region of the slide plate part 92 is removed from a substantially rectangular shape. It has a shape. That is, the rear side front plate part 88 has the same outer shape as the front side front plate part 86 (strictly, slightly smaller), but since the slide plate part 92 is provided by cutting, the region is The shape is excluded. The front side plate portion 86 and the rear side front plate portion 88 constitute a front portion 85. The rear front plate portion 88 is bonded to the back side of the front front plate portion 86 by applying an adhesive to the hatched portion (see FIG. 12).

  Further, the horizontal plate portion 90 is continuously provided via a broken line from a side portion of the rear side front plate portion 88 opposite to the front side front plate portion 86 side, and has a strip shape.

  The sliding plate portion 92 is formed by being surrounded by a fold line 92a and a notch 92b, and the linear fold line 92a is formed on the Y1 side from the boundary line between the horizontal plate portion 90 and the rear front plate portion 88. The incision 92b is formed from a straight line part and an end part formed on the broken line side from both sides of the straight line part so that the sliding plate part 92 has a band shape with the broken line 92a. In the assembled state of the right main body 60, the horizontal plate 90 is perpendicular to the rear front plate 88, and the slide plate 92 is perpendicular to the horizontal plate 90. Since the portion 92 and the rear side front plate portion 88 are parallel to each other, and the broken line 92a is shifted to the Y1 side from the boundary line between the horizontal plate portion 90 and the rear side front plate portion 88, the slide plate The portion 92 and the rear side front plate portion 88 are parallel to each other with a gap therebetween. As a result, the rear front plate portion 48 of the left main body portion 20 slides while being sandwiched between the slide plate portion 92 and the rear front plate portion 88.

  Moreover, the continuous board part 94 is connected from the side part by the side of X2 of the rear side front board part 88 via a broken line, and is exhibiting the substantially square shape. In the assembled state of the right body part 60, the continuous plate part 94 is disposed in the notch part 78 a of the intermediate side plate part 78 and is sandwiched between the outer side plate part 72 and the inner side plate part 76. Further, the continuous side plate portion 96 is connected from the side portion on the X2 side of the front side front plate portion 86 via a broken line, and has a substantially triangular shape. The continuous side plate portion 98 is connected from the side on the Y1 side of the outer side plate portion 72 via a broken line, has a substantially triangular shape, and is also connected to the continuous side plate portion 96 via the broken line. As shown in FIG. 16, the continuous side plate portions 94 and 96 are folded and stored between the outer side plate portion 72 and the continuous plate portion 94.

  When assembling the right body portion 60, the drop prevention plate portion 64 is bonded to the lower surface of the bottom surface portion 62 (the lower surface in the assembled state), and the drop prevention plate portion 68 is attached to the back side of the rear back plate portion 66 (see FIG. As shown in FIG. 16, the rear rear plate portion 66 is bent with respect to the bottom portion 62 and is erected, and the front rear plate portion 70 is made to stand on the rear rear plate portion. The rear rear plate portion 66 and the front rear plate portion 70 are made parallel to each other. In addition, the front side front plate portion 86 is bent with respect to the bottom surface portion 62 and is erected, and the rear side front plate portion 88 is bent with respect to the front side front plate portion 86, and the rear side front plate portion 88 is bent to the front side front plate portion 86. The horizontal plate portion 90 is bent with respect to the rear side front plate portion 88, and the slide plate portion 92 is further bent with respect to the horizontal plate portion 90. In this way, the rear front plate portion 88 and the slide plate portion 92 are parallel to each other with a gap therebetween.

  Further, the intermediate side plate portion 78 is bent with respect to the front back plate portion 70, and the continuous plate portion 94 is bent with respect to the rear front plate portion 88. Further, the continuous side plate portion 82 and the continuous side plate portion 84 are formed. The inner side plate portion 76 is bent inward so that the connecting plate portion 98 and the connecting plate portion 96 are overlapped with each other, and the outer side plate portion 72 is erected with respect to the bottom surface portion 62. The protruding portion 76 a is fitted into the hole 62 a of the bottom surface portion 62 by being disposed inside the side plate portion 78. At this time, the protruding piece 80 is exposed from the opening 76b. As a result, the protruding piece 80 protrudes at a right angle with respect to the inner side plate portion 76. As described above, the right main body 60 is formed.

  Further, when assembling the main body 10, the back surface 65 of the right main body 60 is inserted into the back 25 of the left main body 20, and the front 85 of the right main body 60 is connected to the front 45 of the left main body 20. The bottom surface 62 of the right main body 60 is in contact with the top surface of the bottom 22 of the left main body 20. Further, as shown in FIG. 6, the rear side front plate portion 48 is sandwiched between the rear side front plate portion 88 and the slide plate portion 92.

  Therefore, in a state where the main body 10 is assembled, the left main body 20 and the right main body 60 can slide with respect to each other. Further, since the rear front plate portion 48 is sandwiched between the rear front plate portion 88 and the slide plate portion 92, the front portion 45 and the front portion 85 are not rattled, and the front portion 45 and the front portion are not shaken. The part 85 slides smoothly with each other.

  Further, in the state where the main body portion 10 is most extended as a whole, in the back surface portion 25 and the back surface portion 65, the drop prevention plate portion 28 and the drop prevention plate portion 68 are in contact with each other. And will not fall out of each other. Similarly, at the bottom surface portion 22 and the bottom surface portion 62, the drop-off prevention plate portion 24 and the drop-off prevention plate portion 64 are in contact with each other, so that the bottom surface portion 22 and the bottom surface portion 62 do not drop off from each other. Therefore, even if the main body 10 is extended, the left main body 20 and the right main body 60 do not fall off.

  Moreover, the base part 110 is provided in the main-body part 10 so that expansion-contraction is possible, and has the left side base part 120 which comprises the left side in the front view of the base part 110, and the right side base part 160 which comprises the right side.

  As shown in FIGS. 1, 2, 8, and 9, the left base 120 has a substantially box shape as a whole, and the length of the left base 120 in the height direction is such that the left base 120 is the left main body. 20 is formed in such a length that the upper end of the left base 120 is lower than the upper end of the back surface 25 of the left main body 20, and the length in the front-rear direction of the left base 120 is When the left base 120 is installed in the left main body 20, the length is formed such that a gap is formed between the front surface 45 of the left main body 20 and the left base 120. An opening 147 for locking the protruding piece 40 is formed on the left side surface of the left base 120.

  The details of the left pedestal 120 will be described with reference to FIG. 13. The left pedestal 120 is formed of a single sheet-like blank (specifically, cardboard), and has an upper surface plate (first upper surface plate). Portion) 122, a back plate portion (first back plate portion) 124, a bottom plate portion (first rear bottom plate portion) 126, and a rear standing plate portion (first rear standing plate portion) 128. A rear adhesive plate portion 130, a rear erection plate portion 132, a front plate portion (first front plate portion) 134, a bottom plate portion (first front bottom plate portion) 136, and a front standing plate portion (First front side standing plate portion) 138, front side adhesive plate portion 140, front side construction plate portion 142, insertion piece portion 144, side plate portion (first side plate portion) 146, insertion piece portion 148, , Flap portions 150 and 152, and insertion piece portions 154 and 156.

  The upper plate 122 has a rectangular plate shape, and forms the upper surface of the left pedestal 120 when the left pedestal 120 is assembled. Further, the back plate portion 124 is continuously provided from the side on the Y2 side of the top plate portion 122 via a broken line, has a rectangular shape, and the length in the horizontal direction (X1-X2 direction) is the top plate portion 122. It is formed in the same way. In the assembled state of the left pedestal 120, the back plate 124 constitutes the back of the left pedestal 120 and is substantially perpendicular to the top plate 122. Further, the bottom plate portion 126 is continuously provided from the side portion on the Y2 side of the back plate portion 124 via a broken line, and has an elongated, substantially rectangular shape. That is, as shown in FIG. 13, since the insertion piece part 154 is provided in the corner | angular part, the square-shaped notch part is formed in the part. In the assembled state of the left base 120, the bottom plate 126 constitutes the bottom of the left base 120 and is substantially parallel to the top plate 122. In addition, the rear standing plate portion 128 is connected from the side portion on the Y2 side of the bottom plate portion 126 via a broken line, and has a substantially rectangular shape. That is, the length in the lateral direction (X1-X2 direction) is formed substantially the same as that of the upper surface plate portion 122, and the length in the Y1-Y2 direction is substantially the same (or slightly shorter) as that of the back surface plate portion 124. ing. The rear side standing plate portion 128 is substantially parallel to the back plate portion 124 in the assembled state of the left base 120. A groove 128a for inserting the insertion piece 148 is formed at the end of the rear standing plate 128 on the bottom plate 126 side. Moreover, the back side adhesive board part 130 is connected from the side part by the side of Y2 of the back side standing board part 128 via a broken line, and is exhibiting the substantially rectangular shape. That is, the length in the lateral direction (X1-X2 direction) is formed substantially the same as that of the upper surface plate portion 122, and the length in the Y1-Y2 direction is shorter than that of the back plate portion 124 (approximately half the length). Has been. The rear adhesive plate 130 is bonded to the rear standing plate 128 in the assembled state of the left base 120. In addition, the rear erection plate part 132 is connected from the side part on the Y2 side of the rear adhesive plate part 130 via a broken line, and has an elongated rectangular shape. That is, the length in the lateral direction (X1-X2 direction) is shorter than that of the rear adhesive plate portion 130, and the length in the Y1-Y2 direction is determined from the length of the upper surface plate portion 122 in the Y1-Y2 direction. The length of the bottom plate 126 is substantially the same as the length obtained by subtracting the length of the bottom plate 136 in the Y1-Y2 direction. Further, a cut portion 132a (substantially U-shaped cut portion) for inserting the insertion piece portion 144 is provided at a boundary position between the rear erection plate portion 132 and the rear adhesive plate portion 130.

  Further, the front plate portion 134 is connected continuously from the side portion on the Y1 side of the top plate portion 122 via a broken line, has a rectangular shape, and is formed symmetrically with the back plate portion 126. In the assembled state of the left base 120, the front plate 134 constitutes the front of the left base 120 and is substantially perpendicular to the top plate 122. The bottom plate 136 is connected to the side of the front plate 134 on the Y1 side via a broken line, has an elongated, substantially rectangular shape, and is symmetrical with the bottom plate 126. The bottom plate 136 forms the bottom of the left pedestal 120 in the assembled state of the left pedestal 120 and is substantially parallel to the top plate 122. Further, the front standing plate portion 138 is connected to the side plate on the Y1 side of the bottom plate portion 136 via a broken line, has a substantially rectangular shape, and is formed in line symmetry with the rear standing plate portion 128. ing. A groove 138a for inserting the insertion piece 148 is formed at the end of the front standing plate 138 on the bottom plate 136 side. The front side erected plate portion 138 is substantially parallel to the front plate portion 134 in the assembled state of the left base 120. Further, the front adhesive plate portion 140 is connected to the side portion on the Y2 side of the front standing plate portion 138 via a broken line, and is formed symmetrically with the rear adhesive plate portion 130. The front adhesive plate 140 is bonded to the front standing plate 138 when the left base 120 is assembled. Further, the front erection plate part 142 is connected from the side part on the Y1 side of the front adhesive plate part 140 via a broken line, and has an elongated rectangular shape. That is, it is formed in line symmetry with the rear installation plate portion 132. Moreover, the insertion piece part 144 is connected from the side part by the side of Y1 of the front side installation board part 142, and is formed in the substantially square shape.

  Further, a side plate portion 146 is formed from a side portion on the X1 side of the top plate portion 122 via a broken line. The side plate portion 146 has a square shape, and the length in the Y1-Y2 direction is substantially the same as the length in the Y1-Y2 direction of the top plate portion 122, and the length in the X1-X2 direction is It is formed substantially the same as the length of the back plate portion 124 in the Y1-Y2 direction.

  Moreover, the insertion piece part 148 is connected from the side part by the side of X1 of the side surface board part 146 via a broken line, and is exhibiting substantially convex shape. Grooves 148b-1 and 148b-2 are formed on both sides of the projecting portion in the convex shape. In the assembled state of the left base 120, the groove 148b-1 is fitted with the groove 128a, and the groove 148b-2 is It fits into the groove 138a. In addition, cut portions 148a-1 and 148a-2 are formed at the boundary position between the insertion piece portion 148 and the side plate portion 146, and the insertion piece portion 154 is formed in the cut portion 148a-1 in the assembled state of the left base 120. In addition, the insertion piece 156 is inserted into the notch 148a-2. In addition, a slit-shaped opening 147 is formed in the X1-X2 direction from the side plate 146 to the insertion piece 148. The protruding piece 40 of the left main body 20 is inserted into the opening 147, and the protruding piece 40 is engaged with the side plate 146. Note that the opening 147 is not formed up to the boundary position between the upper surface plate portion 122 and the side surface plate portion 146 so that the protruding piece portion 40 is locked, and there is a gap between the opening portion 147 and the boundary position. Is formed.

  Further, the flap portion 150 is continuously provided from the side on the X1 side of the back plate portion 124 via a broken line, and the flap portion 152 is provided continuously from the side portion on the X1 side of the front plate portion 134 via a broken line. Yes. In addition, the insertion piece 154 includes a main body portion that is provided continuously from the corner portion of the bottom surface plate portion 126, and a front end portion that is provided continuously from the main body portion via a broken line. The leading end is inserted into the notch 148a-1. Similarly, the insertion piece portion 156 includes a main body portion that is continuous from the corner portion of the bottom surface plate portion 136, and a front end portion that is continuous from the main body portion via a broken line. The tip portion is inserted into the cut portion 148a-2.

  When assembling the left base 120, the rear standing plate 128 and the rear adhesive plate 130 are bonded together, and the front standing plate 138 and the front adhesive plate 140 are bonded together. That is, apply an adhesive to the hatched portion of the rear adhesive plate part 130, adhere to the rear standing plate part 128, apply an adhesive to the hatched portion of the front adhesive plate part 140, It is bonded to the front standing plate part 138. The bottom plate 126 is bent with respect to the back plate 124, the bottom plate 136 is bent with respect to the front plate 134, the rear standing plate 128 is bent with respect to the bottom plate 126, and the front side The standing plate portion 138 is bent with respect to the bottom plate portion 136, the rear installation plate portion 132 is bent with respect to the rear adhesive plate portion 130, and the front installation plate portion 142 is bent with respect to the front adhesive plate portion 140. The state shown in FIG. Thereafter, the rear plate portion 124 is bent with respect to the upper surface plate portion 122, the front plate portion 134 is bent with respect to the upper surface plate portion 122, and the front erection plate portion 142 is overlapped with the rear erection plate portion 132 (that is, The front erection plate part 142 is on the opposite side to the rear erection plate part 132 with respect to the upper surface plate part 122). Thereafter, the flap portion 150 is bent with respect to the back plate portion 124, the flap portion 152 is bent with respect to the front plate portion 134, and the flap portions 150 and 152 are closed. 122, the insertion piece 148 is bent with respect to the side plate 146, and both sides of the insertion piece 148 are inserted into the bottom plate 126, 136 (in this case, the groove 128a and the groove 148b-1 are inserted). And then the groove 138a and the groove 148b-2 are locked), and then the left pedestal by inserting the insertion piece 154 into the cut 148a-1 and inserting the insertion piece 156 into the cut 148a-2. Assemble 120.

  As shown in FIGS. 1, 2, 8, and 10, the right pedestal portion 160 has a substantially box shape as a whole, and the length of the right pedestal portion 160 in the height direction is such that the right pedestal portion 160 is the right main body portion. When installed in 60, the length of the right pedestal 160 is formed such that the upper end of the right pedestal 160 is lower than the upper end of the back surface 65 of the right main body 60, and the length of the right pedestal 160 in the front-rear direction is When the right base part 160 is installed in the right main body part 60, the length is formed such that a gap is formed between the front face 85 of the right main body part 60 and the right base part 160. In addition, an opening 187 for locking the protruding piece 80 is formed on the right side surface of the right base 160.

  The details of the right pedestal portion 160 will be described with reference to FIG. 14. The right pedestal portion 160 is formed by a single sheet-like blank (specifically, cardboard), and an upper surface plate portion (second upper surface plate). Portion) 162, a back plate portion (second back plate portion) 164, a bottom plate portion (second rear bottom plate portion) 166, and a rear standing plate portion (second rear standing plate portion) 168. A front plate portion (second front plate portion) 174, a bottom plate portion (second front bottom plate portion) 176, a front standing portion (second front standing portion) 178, and a side plate portion (second (Side plate part) 186, insertion piece part 188, flap parts 190 and 192, and insertion piece parts 194 and 196.

  The right pedestal portion 160 is configured to be symmetrical from the left pedestal portion 120 except for the rear adhesive plate portion 130, the rear erection plate portion 132, the front adhesive plate portion 140, the front erection plate portion 142, and the insertion piece portion 144. Therefore, detailed description is omitted. Since the right base 160 slides in the state of being accommodated in the left base 120, the width of the top plate 162 (the length in the Y1-Y2 direction) is the width of the top plate 122 (the Y1-Y2 direction). The width (the length in the Y1-Y2 direction) of the back plate portion 164 is slightly shorter than the width (the length in the Y1-Y2 direction) of the back plate portion 124. The width of the face plate portion 174 (the length in the Y1-Y2 direction) is slightly shorter than the width of the front plate portion 134 (the length in the Y1-Y2 direction), and the width of the bottom plate portion 166 (in the Y1-Y2 direction). The length) is formed slightly shorter than the width of the bottom plate 126 (the length in the Y1-Y2 direction), and the width of the bottom plate 176 (the length in the Y1-Y2 direction) is the width of the bottom plate 136. It is formed slightly shorter than (the length in the Y1-Y2 direction), and the width (Y1-Y2) of the rear standing plate portion 168 is formed. The length in the direction) is slightly shorter than the width of the rear standing plate 128 (the length in the Y1-Y2 direction), and the width of the front standing plate 178 (the length in the Y1-Y2 direction) is The width of the front standing plate portion 138 (the length in the Y1-Y2 direction) is slightly shorter.

  The insertion piece 148 has a configuration in which the central portion protrudes, whereas the insertion piece 188 has a configuration in which the central portion does not protrude. A groove 188b-1 that engages with the groove 168a is provided at the tip of the insertion piece 188, and a groove 188b-2 that engages with the groove 178a is formed. In addition, cut portions 188a-1 and 188a-2 are formed at the boundary position between the insertion piece portion 188 and the side plate portion 186, and the insertion piece portion 194 is formed in the cut portion 188a-1 in the assembled state of the right side base portion 160. In addition, the insertion piece 196 is inserted into the notch 188a-2.

  When assembling the right pedestal 160, the rear standing plate 168 is bent with respect to the bottom plate 166, the front standing plate 178 is bent with respect to the bottom plate 176, and the bottom plate 166 is bent. The back plate 164 is bent with respect to the back plate 164, the bottom plate 176 is bent with respect to the front plate 174, the back plate 164 is bent with respect to the top plate 162, and the front plate 174 with respect to the top plate 162. To be in a state as shown in FIG. Thereafter, the flap portion 190 is bent with respect to the back plate portion 164, the flap portion 192 is bent with respect to the front plate portion 174, and the flap portions 190 and 192 are closed, and then the side plate portion 186 is closed with the top plate portion. 162, the insertion piece 188 is bent with respect to the side plate 186, and both sides of the insertion piece 188 are inserted inside the bottom plate 166, 176 (in this case, the groove 168a and the groove 188b-1 are inserted). Lock the groove 178a and the groove 188b-2), and then insert the insertion piece 194 into the notch 188a-1 and insert the insertion piece 196 into the notch 188a-2. Assemble 160.

  When assembling the pedestal 110, the right pedestal 160 is inserted into the left pedestal 120. That is, the upper surface plate portion 162 is in contact with the inner side (that is, the lower surface) of the upper surface plate portion 122, the rear surface plate portion 164 is in contact with the inner side (that is, the front side) of the rear surface plate portion 124, and the front surface plate portion 174 is the front surface plate portion 134. The bottom surface plate portion 166 is in contact with the inner surface (that is, the upper surface side) of the bottom surface plate portion 126, and the bottom surface plate portion 176 is in contact with the inner side (that is, the upper surface side) of the bottom surface plate portion 136. The rear standing plate portion 168 is in contact with the inside of the rear standing plate portion 128 (that is, the back side), and the front side standing plate portion 178 is in contact with the inside of the front side standing plate portion 138 (that is, the front side). It will be in the state. Thus, in a state where the base part 110 is assembled, the left base part 120 and the right main body part 160 slide relative to each other while the right base part 160 is housed in the left base part 120.

  Further, when the base 110 is attached to the main body 10, the protruding piece 40 is locked to the opening 147 of the left base 120, and the protruding piece 80 is locked to the opening 187 of the right base 160. . When the left base 120 is locked to the protruding piece 40 and the right base 160 is locked to the protruding piece 80, the base 110 is bonded to the main body 10. That is, an adhesive is applied to the hatched portion of the back plate portion 124 of the left pedestal portion 120 (see FIG. 13), and the back plate portion 124 of the left pedestal portion 120 is applied to the front back plate portion 30 of the left main body portion 20. Adhesive is applied to a portion (see FIG. 12) shown in the hatching of the front rear plate portion 70 of the right main body portion 60, and the rear plate portion 164 of the right base portion 160 is attached to the front rear plate portion of the right main body portion 60. Adhere to 70. As described above, the telescopic shelf 5 is assembled.

  The telescopic shelf 5 having the above-described configuration may be used as a normal shelf, and an object to be placed is placed on the telescopic shelf 5 and used. In particular, since the extendable shelf 5 is provided with the pedestal 110, it is placed not only on the upper surfaces of the bottom surface portions 22 and 62 but also on the upper surface of the pedestal 110 (the upper surfaces of the upper surface plate portions 122 and 162). Can do.

  Moreover, since each part which comprises the expansion-contraction shelf 5 is formed with the corrugated cardboard, disposal can be made easy.

  In addition, the telescopic shelf 5 can be expanded and contracted between the extended state shown in FIGS. 1 and 4 and the contracted state shown in FIGS. 3 and 5, so that the space for placing the elastic shelf 5 is wide. The length of the telescopic shelf 5 can be adjusted according to the height. In particular, since the left main body 20 is locked to the left base 120 by the protruding piece 40 and the right main body 60 is locked to the right base 160 by the protruding piece 80, the main body 20 can be expanded and contracted. Along with this, the base 120 can be expanded and contracted.

  In particular, the back surface portion 65 of the right body portion 60 is inserted into the back surface portion 25 of the left body portion 20, the front portion 85 of the right body portion 60 is inserted into the front portion 45 of the left body portion 20, and the rear side Since the front plate portion 48 is sandwiched between the rear front plate portion 88 and the slide plate portion 92, the left main body portion 20 and the right main body portion 60 slide smoothly, and even in the base portion 110. Since the right pedestal 160 is inserted into the left pedestal 120, it slides smoothly.

  Further, as described above, the drop prevention plates 28, 68, 24, and 64 are provided, so that the left main body 20 and the right main body 60 are dropped even when the main body 10 is extended. There is no.

  In addition, the back surface portion 25 is doubled by the front side back plate portion 30 and the back side back plate portion 26, and the back surface portion 65 is doubled by the front side back plate portion 70 and the back side back plate portion 66. The front portion 45 is double formed by the front side front plate portion 46 and the rear side front plate portion 48, and the front portion 85 is formed double by the front side front plate portion 86 and the rear side front plate portion 88. Further, the side surface portion 31 is formed at least in triple by the outer side plate portion 32, the inner side plate portion 36, and the intermediate side plate portion 38, and the side surface portion 71 is formed by the outer side plate portion 72, the inner side plate portion 76, and the intermediate side plate portion 78. Therefore, the strength of the main body 10 can be sufficiently obtained even if it is made of cardboard.

  Also in the pedestal portion 110, the left pedestal portion 120 includes an upper surface plate portion 122, a back surface plate portion 124, a bottom surface plate portion 126, a rear side standing plate portion 128, a front surface plate portion 134, and a bottom surface plate portion. 136, a front side standing part 138, and the right side base part 160 includes a top plate part 162, a back plate part 164, a bottom plate part 166, a rear side standing board part 168, and a front plate part 174. A bottom plate portion 176 and a front stand portion 178, and in particular, since a pair of stand plate portions are provided on each of the left stand 120 and the right stand 160, Strength can be obtained. Further, in the left side pedestal portion 120, the insertion piece portion 144 is inserted into the notch portion 132a, thereby connecting the rear erection plate portion 132 and the front erection plate portion 142, so that the rear erection plate portion 128 and the front erection plate portion 128 are connected. Since the installation plate portion 138 is cross-linked, the strength can be further increased. Therefore, even if a heavy object to be placed is placed on the pedestal 110, the possibility that the pedestal 110 is damaged is small.

  In the above description, the intermediate side plate portion 38 is connected to the front side rear plate portion 30 in the left main body portion 20, but the configuration of the continuous side plate portions 42 and 44 in the left main body portion 20 is described. It may be omitted and may be provided continuously from the left side of the rear back plate part 26 via a broken line. Similarly, in the right main body portion 60, the intermediate side plate portion 78 has been described as being continuously provided from the front back plate portion 70, but the configuration of the continuous side plate portions 82 and 84 in the right main body portion 60 is omitted. You may make it connect from the right side of the back side back board part 66 via a broken line.

  In the above description, in the main body 10, the right main body 60 is inserted into the left main body 20, and in the base 110, the right base 160 is inserted into the left base 120. The main body 10 may be configured symmetrically and the left main body may be inserted into the right main body. The base 110 may be configured symmetrically and the left base inserted into the right base. It is good also as a structure.

DESCRIPTION OF SYMBOLS 5 Telescopic shelf 10 Main-body part 20 Left-side main-body part 60 Right-side main-body part 22, 62 Bottom-surface part 24,28,64,68 Drop-off prevention board part 26,66 Rear side rear-surface board part 29,34,47,74 Strip-like board part 30 , 70 Front rear plate part 32, 72 Outer side plate part 36, 76 Inner side plate part 38, 78 Intermediate side plate part 40, 80 Protruding piece part 42, 44, 82, 84 Continuous side plate part 46, 86 Front front plate part 48, 88 Rear side front plate portion 50, 52, 54, 94, 96, 98 Continuous plate portion 90 Horizontal flat plate portion 92 Slide plate portion 110 Base portion 120 Left base portion 122, 162 Upper surface plate portion 124, 164 Back plate portion 126 136, 166, 176 Bottom plate portion 128, 168 Rear standing plate portion 130 Rear adhesive plate portion 132 Rear building plate portion 134, 174 Front plate portion 138, 178 Front standing plate portion 140 Front side contact Plate part 142 Front side installation board part 144, 148, 154, 156, 188, 194, 196 Insertion piece part 146, 186 Side plate part 36b, 76b, 147, 187 Opening part 150, 152, 190, 192 Flap part 160 Right side stand Part

Claims (7)

Telescopic shelf,
A main body and a base,
The main body has a left main body and a right main body that slides relative to the left main body,
The left main body is formed of a single sheet-like paper blank,
A rectangular plate-shaped first bottom surface portion;
A first rear rear plate having a square shape standing from a side portion on the back side of the first bottom surface portion via a broken line, and a first rear portion arranged continuously from the upper side of the first rear back plate portion via a broken line. A first back side plate having a square first front side back plate provided substantially parallel to the side back plate,
A first front front plate having a square shape standing from a side portion on the front side of the first bottom surface portion via a broken line, and a first front side front plate arranged continuously from the upper side of the first front side front plate portion via a broken line. A first rear front plate having a square shape provided substantially parallel to the first front front plate on the back side of the front portion, the height of the upper end being higher than the height of the upper end of the rear portion A first front portion formed low;
A first trapezoidal shape that is erected from the left side of the bottom surface part via a broken line, the upper side of which is inclined upward from the front side toward the back side, and the upper side of the first outer side plate part via the broken line A first side surface belt-shaped plate portion continuously provided on the right side surface and formed in a band shape along the upper side of the first outer side plate portion, and a side line on the right side surface of the first side surface belt-shaped plate portion via a broken line A first inner side plate portion that is provided in a continuous manner and is provided substantially in parallel with the first outer side plate portion, and has a substantially trapezoidal shape with an upper side inclined upward from the front side toward the back side. A first inner side plate portion having an opening for projecting the first projecting piece portion continuously provided from the right side and the left side of the first front rear plate portion or the first rear rear plate portion via a broken line. A first intermediate side plate portion provided between the first outer side plate portion and the first inner side plate portion, and a first intermediate side plate portion. Has in a region inside the first protruding piece protruding from the opening of the first inner side plate portion is formed by forming a notch on the right side, a first side portion having, a,
The right-side main body is formed of a single sheet-like paper blank,
A square bottom plate-like second bottom surface portion, the second bottom surface portion provided with the left side region overlapping the top surface of the first bottom surface portion;
A second rear-side rear plate portion having a square shape standing from a side portion on the back side of the second bottom surface portion via a broken line, and a second rear portion arranged continuously from the upper side of the second rear-side rear plate portion via a broken line. A second rear surface portion having a square second front rear surface plate portion provided substantially parallel to the side rear surface plate portion;
A square-shaped second front side front plate portion erected from a side portion on the front side of the second bottom surface portion via a broken line, and a second front side front plate provided continuously from the upper side of the second front side front plate portion via a broken line. A second rear front plate having a square shape provided substantially parallel to the second front front plate on the back side of the front portion, the upper end of the front portion being higher than the upper end height of the rear portion A second front portion formed low;
A substantially trapezoidal shape standing from the right side of the bottom surface part via a polygonal line, the upper side of which is inclined upward from the front side toward the back side, and the upper side of the second outer side plate part via the polygonal line A second side surface band-shaped plate portion formed in a strip shape along the upper side of the second outer side plate portion that is provided on the left side surface side, and a side line on the left side surface side of the second side surface portion belt-shaped plate portion via a broken line A second inner side plate portion that is provided in a continuous manner and is substantially parallel to the second outer side plate portion, and has a substantially trapezoidal shape with an upper side inclined upward from the front side toward the back side. A second inner side plate portion having an opening for projecting the second projecting piece portion provided continuously from the left side and the right side of the second front side rear plate portion or the second rear side rear plate portion via a broken line. And a second intermediate side plate portion provided between the second outer side plate portion and the second inner side plate portion, and a second intermediate side plate portion. Has in a region inside the second protruding piece protruding from the opening of the second inner side plate portion is formed by forming a notch on the left side, a second side portion having, a,
The back surface portion of either the right main body portion or the left main body portion is inserted into the other back surface portion, the front surface portion of the one is inserted into the other front surface portion, and at least a part of the one bottom surface portion is By being positioned on the upper surface of the other bottom surface portion, the left main body portion and the right main body portion are formed to be slidable from each other,
The platform has a left platform and a right platform that slides relative to the left platform,
The left base is formed by a single sheet-like paper blank,
A first upper surface plate portion that has a rectangular shape and whose length in the front-rear direction is shorter than the length in the front-rear direction of the first bottom surface portion;
The first upper surface plate portion is connected to the first upper surface plate portion at a substantially right angle downward from the side portion on the rear surface side of the first upper surface plate portion with a broken line, and the length in the height direction is greater than the length in the height direction of the first back surface portion. A square-shaped first back plate portion that is also shortly formed,
The first back plate is connected to the front side from the lower side of the first back plate through a broken line, and the length in the front-rear direction is shorter than the length in the front-rear direction of the first top plate and is substantially parallel to the first top plate. A first rear side bottom plate portion provided;
A first rear standing plate portion that is connected to the first rear bottom plate portion upward in parallel with the first rear plate portion from the side portion on the front side of the first rear bottom plate portion;
A first front plate portion that is continuously provided downward from the side portion on the front side of the first upper surface plate portion via a broken line, and is formed symmetrically with the first back plate portion;
A first front side bottom plate part formed on the front side through the broken line from the lower side of the first back plate part and formed on the first rear side bottom plate part;
A first front-side standing plate portion that is provided continuously from a side portion on the front side of the first front-side bottom plate portion via a broken line and substantially parallel to the first front plate portion;
A first side plate provided continuously from the left side of the first top plate, formed substantially at right angles to the first top plate, and provided with an opening for locking the first protruding piece;
A first insertion piece portion that is provided continuously from a side opposite to the first upper surface plate portion side of the first side surface plate portion and is inserted inside the first rear bottom surface plate portion and the first front bottom surface plate portion; Have
The right platform is formed by a single sheet-like paper blank,
A second upper surface plate portion having a rectangular shape and having a length in the front-rear direction shorter than a length in the front-rear direction of the second bottom surface portion;
The second upper surface plate portion is connected to the second upper surface plate portion at a substantially right angle downward from the side portion on the rear surface side of the second upper surface plate portion with a broken line, and the length in the height direction is longer than the height direction length of the second back surface portion. A square-shaped second back plate portion that is also formed short,
It is connected to the front side via a broken line from the lower side of the second back plate part, and the length in the front-rear direction is shorter than the length in the front-rear direction of the second upper face plate part, and is substantially parallel to the second upper face plate part. A second rear bottom surface plate portion provided;
A second rear-side standing plate portion that is provided continuously from the side portion on the front side of the second rear-side bottom plate portion via a broken line and substantially parallel to the second rear plate portion;
A second front plate portion that is continuously provided downward from the side portion on the front side of the second upper surface plate portion via a broken line, and is formed symmetrically with the second back plate portion;
A second front bottom surface plate portion formed on the front side of the second back surface plate portion from the lower side of the second back surface plate portion via a broken line;
A second front-side standing plate portion that is provided continuously from the side portion on the front side of the second front-side bottom plate portion via a broken line and substantially parallel to the second front plate portion;
A second side surface plate portion provided continuously from the right side of the second upper surface plate portion, formed at a substantially right angle to the second upper surface plate portion, and provided with an opening for locking the second protruding piece portion;
A second insertion piece portion continuously provided from a side opposite to the second upper surface plate portion side of the second side surface plate portion and inserted into the second rear bottom surface plate portion and the second front bottom surface plate portion; Have
Either the left base part or the right base part is inserted into the other, the left base part and the right base part are formed to be slidable with each other, and the first protruding piece part is inserted into the opening of the first side plate part A telescopic shelf, wherein the base is attached to the main body by inserting the second protruding piece into the opening of the second side plate. The back part of one body part in the left body part and the right body part is inserted into the back part of the other body part, the front part of the one body part is inserted into the front part of the other body part, When at least a part of the bottom surface portion of the main body portion is positioned on the top surface of the bottom surface portion of the other main body portion so that the left main body portion and the right main body portion can slide with respect to each other, the bottom surface of the one main body portion A first bottom surface in the form of a belt which is connected to the side surface of the one main body portion opposite to the side surface portion via a broken line, folded back to the lower surface side of the bottom surface portion, and bonded to the lower surface of the bottom surface portion. A part for preventing part drop-off and a side part of the bottom surface of the other body part opposite to the side of the side surface of the other body part are provided via a broken line and folded back to the upper surface side of the bottom surface part. To prevent the strip-shaped second bottom surface portion from being attached to the top surface of the bottom surface portion. And a continuous line from the side opposite to the side of the one main body in the rear back plate of the one main body via a broken line. A first back surface drop-off preventing piece that is folded back and bonded to the back surface of the rear back plate portion; and a side surface side of the other main body portion in the rear back plate portion of the other main body portion; Is connected to the opposite side portion through a broken line, and is folded back to the front side of the rear side back plate portion and bonded to the front side of the rear side back plate portion. When the left main body and the right main body are extended in the direction in which the telescopic shelf extends, the pair of fall prevention pieces are locked together, whereby the first bottom face drop prevention piece and the second bottom face The first back-side drop-off prevention piece and the second back-side drop-off prevention piece are locked, and the left main body part and the right Telescopic shelf as defined in claim 1, characterized in that to prevent the main body portion is disengaged. The back part of one body part in the left body part and the right body part is inserted into the back part of the other body part, the front part of the one body part is inserted into the front part of the other body part, When at least a part of the bottom surface portion of the main body portion is positioned on the top surface of the bottom surface portion of the other main body portion so that the left main body portion and the right main body portion can slide relative to each other, A slide plate portion provided with a substantially strip-like horizontal plate portion on the back side from the lower side of the side front plate portion via a polygonal line, and provided substantially parallel to the rear front plate portion with a gap from the horizontal plate portion. Or a rear front plate portion of the other main body portion is slid between the horizontal plate portion and the rear front plate portion of the one main body portion. The expansion shelf according to 2. When one of the left base part and the right base part is inserted into the other base part so that the left base part and the right base part are slidable with respect to each other, A rear side adhesive plate part that is connected from the upper end of the installation plate part via a fold line, folded back to the front side of the rear side installation board part and bonded to the front side of the rear side installation board part, and its height direction The length of the rear side adhesive plate part formed shorter than the length in the height direction of the rear side standing plate part, and a belt-like shape continuously connected via a broken line from the lower side of the rear side adhesive plate part to the front side It is connected from the upper end of the rear standing plate part and the front standing plate part of the other base part via a broken line, and is folded back to the back side of the front standing plate part and bonded to the back side of the front standing plate part A front adhesive plate portion formed such that the length in the height direction is shorter than the length in the height direction of the front standing plate portion, and the front adhesive plate portion 3. A belt-like front erection plate portion connected from the side to the front side via a broken line is provided, and the front erection plate portion and the rear erection plate portion are connected to each other. Or the expansion-contraction shelf of 3. The back part of one body part in the left body part and the right body part is inserted into the back part of the other body part, the front part of the one body part is inserted into the front part of the other body part, When at least a part of the bottom surface portion of the main body portion is located on the top surface of the bottom surface portion of the other main body portion so that the left main body portion and the right main body portion can slide with respect to each other, Between the rear back plate part and the front back plate part, a belt-like band plate part is formed between the upper side of the rear back plate part and the upper side of the front back plate part between the rear back plate part and the front back plate part. A belt-like belt-like plate portion is provided between the front front plate portion and the rear front plate portion along the upper side of the front front plate portion and the upper side of the rear front plate portion. 3. The rear front plate portion is provided via a broken line. Telescopic shelf according to 3 or 4. The stretchable shelf according to claim 1, 2, 3, 4, or 5, wherein the left main body, the right main body, the left base, and the blank that forms the right base are made of cardboard. Telescopic shelf,
A main body and a base,
The main body has a left main body and a right main body that slides relative to the left main body,
The left main body is formed of a single sheet of cardboard blank,
A rectangular plate-shaped first bottom surface portion;
A first rear rear plate having a square shape standing from a side portion on the back side of the first bottom surface portion via a broken line, and a first rear portion arranged continuously from the upper side of the first rear back plate portion via a broken line. A first back side plate having a square first front side back plate provided substantially parallel to the side back plate,
A first front front plate having a square shape standing from a side portion on the front side of the first bottom surface portion via a broken line, and a first front side front plate arranged continuously from the upper side of the first front side front plate portion via a broken line. A first rear front plate having a square shape provided substantially parallel to the first front front plate on the back side of the front portion, the height of the upper end being higher than the height of the upper end of the rear portion A first front portion formed low;
A first trapezoidal shape that is erected from the left side of the bottom surface part via a broken line, the upper side of which is inclined upward from the front side toward the back side, and the upper side of the first outer side plate part via the broken line A first side surface belt-shaped plate portion continuously provided on the right side surface and formed in a band shape along the upper side of the first outer side plate portion, and a side line on the right side surface of the first side surface belt-shaped plate portion via a broken line A first inner side plate portion that is provided in a continuous manner and is provided substantially in parallel with the first outer side plate portion, and has a substantially trapezoidal shape with an upper side inclined upward from the front side toward the back side. A first inner side plate portion having an opening for projecting the first projecting piece portion continuously provided from the right side and the left side of the first front rear plate portion or the first rear rear plate portion via a broken line. A first intermediate side plate portion provided between the first outer side plate portion and the first inner side plate portion, and a first intermediate side plate portion. Has in a region inside the first protruding piece protruding from the opening of the first inner side plate portion is formed by forming a notch on the right side, a first side portion having, a,
The right main body is formed of a single sheet of cardboard blank,
A square bottom plate-like second bottom surface portion, the second bottom surface portion provided with the left side region overlapping the top surface of the first bottom surface portion;
A second rear-side rear plate portion having a square shape standing from a side portion on the back side of the second bottom surface portion via a broken line, and a second rear portion arranged continuously from the upper side of the second rear-side rear plate portion via a broken line. A second rear surface portion having a square second front rear surface plate portion provided substantially parallel to the side rear surface plate portion;
A square-shaped second front side front plate portion erected from a side portion on the front side of the second bottom surface portion via a broken line, and a second front side front plate provided continuously from the upper side of the second front side front plate portion via a broken line. A second rear front plate having a square shape provided substantially parallel to the second front front plate on the back side of the front portion, the upper end of the front portion being higher than the upper end height of the rear portion A second front portion formed low;
A substantially trapezoidal shape standing from the right side of the bottom surface part via a polygonal line, the upper side of which is inclined upward from the front side toward the back side, and the upper side of the second outer side plate part via the polygonal line A second side surface band-shaped plate portion formed in a strip shape along the upper side of the second outer side plate portion that is provided on the left side surface side, and a side line on the left side surface side of the second side surface portion belt-shaped plate portion via a broken line A second inner side plate portion that is provided in a continuous manner and is substantially parallel to the second outer side plate portion, and has a substantially trapezoidal shape with an upper side inclined upward from the front side toward the back side. A second inner side plate portion having an opening for projecting the second projecting piece portion provided continuously from the left side and the right side of the second front side rear plate portion or the second rear side rear plate portion via a broken line. And a second intermediate side plate portion provided between the second outer side plate portion and the second inner side plate portion, and a second intermediate side plate portion. Has in a region inside the second protruding piece protruding from the opening of the second inner side plate portion is formed by forming a notch on the left side, a second side portion having, a,
The back surface portion of either the right main body portion or the left main body portion is inserted into the other back surface portion, the front surface portion of the one is inserted into the other front surface portion, and at least a part of the one bottom surface portion is By being positioned on the upper surface of the other bottom surface portion, the left main body portion and the right main body portion are formed to be slidable from each other,
The platform has a left platform and a right platform that slides relative to the left platform,
The left pedestal is formed of a single sheet of cardboard blank,
A first upper surface plate portion that has a rectangular shape and whose length in the front-rear direction is shorter than the length in the front-rear direction of the first bottom surface portion;
The first upper surface plate portion is connected to the first upper surface plate portion at a substantially right angle downward from the side portion on the rear surface side of the first upper surface plate portion with a broken line, and the length in the height direction is greater than the length in the height direction of the first back surface portion. A square-shaped first back plate portion that is also shortly formed,
The first back plate is connected to the front side from the lower side of the first back plate through a broken line, and the length in the front-rear direction is shorter than the length in the front-rear direction of the first top plate and is substantially parallel to the first top plate. A first rear side bottom plate portion provided;
A first rear standing plate portion that is connected to the first rear bottom plate portion upward in parallel with the first rear plate portion from the side portion on the front side of the first rear bottom plate portion;
A first front plate portion that is continuously provided downward from the side portion on the front side of the first upper surface plate portion via a broken line, and is formed symmetrically with the first back plate portion;
A first front side bottom plate part formed on the front side through the broken line from the lower side of the first back plate part and formed on the first rear side bottom plate part;
A first front-side standing plate portion that is provided continuously from a side portion on the front side of the first front-side bottom plate portion via a broken line and substantially parallel to the first front plate portion;
A first side plate provided continuously from the left side of the first top plate, formed substantially at right angles to the first top plate, and provided with an opening for locking the first protruding piece;
A first insertion piece portion that is provided continuously from a side opposite to the first upper surface plate portion side of the first side surface plate portion and is inserted inside the first rear bottom surface plate portion and the first front bottom surface plate portion; Have
The right base part is formed by a single sheet-like cardboard blank,
A second upper surface plate portion having a rectangular shape and having a length in the front-rear direction shorter than a length in the front-rear direction of the second bottom surface portion;
The second upper surface plate portion is connected to the second upper surface plate portion at a substantially right angle downward from the side portion on the rear surface side of the second upper surface plate portion with a broken line, and the length in the height direction is longer than the height direction length of the second back surface portion. A square-shaped second back plate portion that is also formed short,
It is connected to the front side via a broken line from the lower side of the second back plate part, and the length in the front-rear direction is shorter than the length in the front-rear direction of the second upper face plate part, and is substantially parallel to the second upper face plate part. A second rear bottom surface plate portion provided;
A second rear-side standing plate portion that is provided continuously from the side portion on the front side of the second rear-side bottom plate portion via a broken line and substantially parallel to the second rear plate portion;
A second front plate portion that is continuously provided downward from the side portion on the front side of the second upper surface plate portion via a broken line, and is formed symmetrically with the second back plate portion;
A second front bottom surface plate portion formed on the front side of the second back surface plate portion from the lower side of the second back surface plate portion via a broken line;
A second front-side standing plate portion that is provided continuously from the side portion on the front side of the second front-side bottom plate portion via a broken line and substantially parallel to the second front plate portion;
A second side surface plate portion provided continuously from the right side of the second upper surface plate portion, formed at a substantially right angle to the second upper surface plate portion, and provided with an opening for locking the second protruding piece portion;
A second insertion piece portion continuously provided from a side opposite to the second upper surface plate portion side of the second side surface plate portion and inserted into the second rear bottom surface plate portion and the second front bottom surface plate portion; Have
Either the left base part or the right base part is inserted into the other, the left base part and the right base part are formed to be slidable with each other, and the first protruding piece part is inserted into the opening of the first side plate part The base is attached to the main body by inserting the second protruding piece into the opening of the second side plate,
The back part of one body part in the left body part and the right body part is inserted into the back part of the other body part, the front part of the one body part is inserted into the front part of the other body part, When at least a part of the bottom surface portion of the main body portion is positioned on the top surface of the bottom surface portion of the other main body portion so that the left main body portion and the right main body portion can slide with respect to each other, the bottom surface of the one main body portion A first bottom surface in the form of a belt which is connected to the side surface of the one main body portion opposite to the side surface portion via a broken line, folded back to the lower surface side of the bottom surface portion, and bonded to the lower surface of the bottom surface portion. A part for preventing part drop-off and a side part of the bottom surface of the other body part opposite to the side of the side surface of the other body part are provided via a broken line and folded back to the upper surface side of the bottom surface part. To prevent the strip-shaped second bottom surface portion from being attached to the top surface of the bottom surface portion. And a continuous line from the side opposite to the side of the one main body in the rear back plate of the one main body via a broken line. A first back surface drop-off preventing piece that is folded back and bonded to the back surface of the rear back plate portion; and a side surface side of the other main body portion in the rear back plate portion of the other main body portion; Is connected to the opposite side portion through a broken line, and is folded back to the front side of the rear side back plate portion and bonded to the front side of the rear side back plate portion. When the left main body and the right main body are extended in the direction in which the telescopic shelf extends, the pair of fall prevention pieces are locked together, whereby the first bottom face drop prevention piece and the second bottom face The first back-side drop-off prevention piece and the second back-side drop-off prevention piece are locked, and the left main body part and the right Prevent the main body portion is disengaged,
The back part of one body part in the left body part and the right body part is inserted into the back part of the other body part, the front part of the one body part is inserted into the front part of the other body part, When at least a part of the bottom surface portion of the main body portion is positioned on the top surface of the bottom surface portion of the other main body portion so that the left main body portion and the right main body portion can slide relative to each other, A slide plate portion provided with a substantially strip-like horizontal plate portion on the back side from the lower side of the side front plate portion via a polygonal line, and provided substantially parallel to the rear front plate portion with a gap from the horizontal plate portion. Slid in a state where the rear front plate portion of the other main body portion is sandwiched between the horizontal plate portion and the rear front plate portion of the one main body portion,
When one of the left base part and the right base part is inserted into the other base part so that the left base part and the right base part are slidable with respect to each other, The rear standing plate part that is connected from the upper end of the installation plate part via a broken line, is folded back to the front side of the rear standing plate part, and is bonded to the front side of the rear standing plate part. The rear side standing plate part, whose length in the direction is shorter than the length in the height direction of the rear side standing plate part, is connected to the front side from the lower side of the rear side standing plate part via a broken line. A belt-like rear erection plate part and a rear side of the front erection plate part that are connected from the upper end of the front erection plate part of the other base part via a fold line and folded back to the rear side of the front erection plate part A front standing plate portion bonded to the side, the length of the height direction being shorter than the length of the front standing plate portion in the height direction, and the front standing plate portion Sides and front bridging plate portion of the strip which is continuously provided via a line is provided on the front side from, and a front bridging plate portion and the rear-side placement plate portion is connected,
The back part of one body part in the left body part and the right body part is inserted into the back part of the other body part, the front part of the one body part is inserted into the front part of the other body part, When at least a part of the bottom surface portion of the main body portion is located on the top surface of the bottom surface portion of the other main body portion so that the left main body portion and the right main body portion can slide with respect to each other, Between the rear back plate part and the front back plate part, a belt-like band plate part is formed between the upper side of the rear back plate part and the upper side of the front back plate part between the rear back plate part and the front back plate part. A belt-like belt-like plate portion is provided between the front front plate portion and the rear front plate portion along the upper side of the front front plate portion and the upper side of the rear front plate portion. A telescopic shelf, which is provided to the rear side front plate portion via a broken line.

Images