JP5055575B2 - Connecting structure between beam frame and leg, and furniture with top plate - Google Patents

Description

  The present invention relates to a connection structure applied when connecting a beam frame arranged on the lower surface side of a top board and a leg arranged in a standing posture, and furniture with a top board to which this connection structure is applied. is there.

  Conventionally, a pair of end legs arranged in an upright position near the end of the top board, and a gate-shaped leg body having a side frame connecting the end legs, and a lower face side of the top board. As a mode of connecting the beam frame to the beam frame, an aluminum die-cast connection member is integrally assembled in the side frame where the beam frame is connected, and the beam frame and the leg are connected via this connection member. There is a known aspect (see, for example, Patent Document 1).

Specifically, a block-shaped connecting member integrally formed by aluminum die casting is attached to the side frame, a nut holder holding a nut is fixed inside the connecting member, and between the side walls of the beam frame. A bolt insertion hole that can be communicated in the opening direction of the nut is formed in the spanning fixing pin, and the bolt inserted into the bolt insertion hole is screwed into the nut using the fixing pin as a scaffold, thereby connecting the connecting member and the beam. The frame was connected.
Japanese Patent Laid-Open No. 2005-163945

  However, since the conventional connection structure uses an integrally molded product made of aluminum die cast as the connection member, a dedicated mold is required in the manufacturing stage, and there is a problem that the manufacturing cost and thus the total cost increases. . Furthermore, the connection member itself must be provided with a dedicated mechanism for holding the nut holder inside the connection fitting, which can lead to complication of the structure of the connection member itself. In addition, with the weight of the connecting member itself, there is a problem that the weight of the entire leg body assembled with such a connecting member may also be caused.

  The present invention has been made paying attention to such a problem, and the main purpose is to reduce the manufacturing cost as compared with the aspect using the connecting member made of aluminum die cast, and the structure. However, an object of the present invention is to provide a connection structure capable of effectively increasing the connection strength between a beam frame and a leg connected through a simple connection fitting.

That is, the connecting structure of the beam frame and the leg of the present invention is applied when the pipe-shaped beam frame disposed on the lower surface side of the top plate and the leg are connected to each other, Of the legs, a metal plate fitting having at least a pair of side walls is provided at a location where the beam frame is connected, and a first fixed bridge member spanned between the side walls of the connecting metal, and the beam frame. The end face on the beam frame side and the end face of the beam frame are abutted against each other by the tightening means that draws and tightens the second fixed bridge member spanned between the pair of opposing side walls in a close-up direction. The leg body is a panel-like one in which the inner panel and the outer panel are assembled to each other, and a reinforcing part is interposed in the inner space formed between the inner panel and the outer panel, The connecting bracket is inside the leg. An insertion wall that can be inserted into a space is integrally formed, and the insertion wall is welded to a reinforcing portion, and the reinforcing portion extends from one of the inner panel and the outer panel toward the other panel. And a pair of opposing walls facing each other along the width direction of the panel, wherein the coupling metal is provided with the insertion wall continuously on each side wall, and the pair of insertion walls are respectively provided. It welds to the said opposing wall corresponding, It is characterized by the above-mentioned .

  Here, the “pair of side walls” does not need to be parallel to each other, and includes, for example, the opposite walls of a round pipe.

  If it is such, in order to connect the beam frame and the leg through the connecting metal fitting made of sheet metal material, compared with the embodiment using an integrally molded product made of aluminum die cast as the connecting member, the manufacturing stage This eliminates the need to prepare a dedicated mold, and can effectively reduce the manufacturing cost and thus the total cost, and the end face of the connecting metal fitting that opens to the beam frame side and the beam frame by the fastening means. Since the end faces of the metal plates are in contact with each other in a state of being pressed against each other, it becomes possible to press-bond the end faces to each other, and although it is a metal fitting made of sheet metal, high connection strength can be obtained. The frame and the leg can be firmly connected. In addition, in order to bridge the first fixed frame between the side walls of the connecting bracket, it is only necessary to form holes on the side walls that can support the first fixed bracket, and the structural complexity of the connecting bracket itself can be avoided. Can do. Furthermore, since the connecting metal fitting made of a sheet metal material is used, it is possible to effectively reduce the weight of the connecting metal fitting itself.

  In particular, the leg body is a panel-like one in which an inner panel and an outer panel are assembled to each other, and a reinforcing portion is interposed in an internal space formed between the inner panel and the outer panel, If the insertion wall that can be inserted into the internal space of the leg is integrally formed and the insertion wall is welded to the reinforcing portion, the reinforcing portion increases the strength of the entire panel-like leg, and the reinforcing portion A high mounting strength between the connecting metal fitting and the leg body can be obtained by welding the insertion wall.

  In this case, the reinforcing portion includes a pair of opposed walls extending from one of the inner panel and the outer panel toward the other panel and facing each other along the width direction of the panel. If the connection metal fitting is provided in such a manner that the insertion wall is continuously provided on each side wall and the pair of insertion walls are welded to the corresponding opposing walls, the attachment strength between the connection metal fitting and the leg is obtained. Further, it is possible to solve the problem that the connecting fitting is bent and deformed by a load applied to the connecting fitting. Further, the opposing wall of the reinforcing portion also functions as a guide portion that guides the insertion destination of the insertion wall, and the insertion operation of the insertion wall can be performed smoothly and accurately.

  In order to prevent the beam frame from falling off the connection fitting with a simple structure, the connection fitting is attached to the connection fitting main body having the pair of side walls and the inward surface of the side wall of the connection fitting main body. An inner cover metal fitting made of sheet metal, and projecting the second side wall of the inner cover metal fitting to the beam frame side with respect to the side wall of the connecting metal fitting body, The lower surface of the upper wall of the beam frame may be hit.

  In addition, in order to prevent the lateral displacement of the beam frame with respect to the connecting fitting with a simple structure, the connecting fitting can be attached to the connecting fitting main body having the pair of side walls and the inward surface of the side wall of the connecting fitting main body, respectively. An inner cover fitting made of sheet metal having a second side wall, and the second side wall of the inner cover fitting protrudes to the beam frame side from the side wall of the connecting fitting main body, and the outward direction of these second side walls The inner surface of the side wall of the beam frame may be brought into contact with the surface.

  If the second side walls of the inner cover metal are welded to the corresponding side walls of the connecting metal main body, the assembly strength of the connecting metal main body and the inner cover main body made of these sheet metal materials can be effectively increased.

  As a preferred embodiment of the tightening means, it is inserted through a bolt insertion hole formed in one of the first fixed frame and the second fixed frame, and the one fixed frame is As a scaffold, there is an embodiment in which a bolt is screwed into a screw hole formed in the other fixed frame member so that the first fixed frame member and the second fixed frame member are drawn and tightened in a close direction.

  Moreover, the furniture with a top plate of the present invention comprises a top plate and a support structure that supports the top plate, and the support structure is a pipe-like shape arranged on the lower surface side of the top plate. The beam frame and the leg, and the beam frame and the leg are connected to each other as described above, that is, made of a sheet metal having at least a pair of side walls provided at a position where the beam frame is connected to the leg. Connect the first fixed frame spanned between the side walls of the coupling bracket and the second fixed rack spanned between the pair of opposite side walls of the beam frame in the direction of approaching. It is characterized in that the end face on the beam frame side and the end face of the beam frame are connected to each other so as to abut against each other by the fastening means for fastening.

  Here, the “pair of side walls” do not have to be parallel to each other, and includes, for example, the opposite walls of a round pipe. Moreover, a table and a desk are mentioned as a specific example of furniture with a top plate.

  Such furniture with a top plate has the effect of the above-described connection structure between the beam frame and the leg, and the strength of the entire support structure formed by connecting the beam frame and the leg is also improved and stable. It is possible to obtain the support state of the top plate. In addition, by firmly connecting the beam frame and the leg body, it is possible to avoid a problem that the relative assembly position of the beam frame with respect to the leg body shifts, and the top plate itself does not have rigidity such as a wooden board, for example. Even if it is a thing, the deformation | transformation (bowing) of the said top plate can be prevented and it can support reliably.

  As described above, according to the present invention, since the beam frame and the leg are connected via the connection fitting made of a sheet metal material, the cost can be reduced compared to the aspect using the connection member made of aluminum die cast. In addition to being able to achieve high connection strength, the beam frame and the leg can be firmly connected to each other even though the connection fitting is simple in structure.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  The connection structure between the beam frame and the leg according to the present embodiment is applied to the furniture 1 with a top plate shown in FIG.

  The furniture 1 with a top plate is a large table used in a so-called free address type office where the seat is not limited, and mainly includes a top plate 2 and a support structure 3 that supports the top plate 2.

  As shown in FIG. 1, the top plate 2 is configured by using a plurality of top plate elements 21. Specifically, for example, four wooden top plate elements 21 having a rectangular shape in plan view are used, and two of the top plate elements 21 are set as a set, and their counter-use ends 21b face each other. By arranging the sets of the top plate elements 21 adjacent to each other, the counter-use ends 21b of the top plate elements 21 are gathered at the center in the depth direction of the entire top plate 2, and the top plate elements are arranged at both ends in the depth direction. The use end 21a of 21 is positioned. Note that a gap is formed between the counter-use ends 21b of the top plate elements 21 paired in the depth direction of the entire top plate 2, and this gap is wired in a wiring duct (not shown) disposed in the space below the top plate 2. It communicates with the space. In the present embodiment, the desktop panel DTP is provided at the center in the depth direction of the entire top plate 2, and the side panels SP are provided on both sides of the entire top plate 2.

  Further, as shown in FIG. 2, the support structure 3 includes a plurality of beam frames (first beam frame 4 in the illustrated example) arranged along the width direction of the top plate 2 on the lower surface side of the top plate 2, and At least a pair of left and right panel-like legs (hereinafter referred to as “panel legs 5”) arranged in a standing posture, and these beam frame, panel legs 5 and connecting fittings (in the illustrated example, the first connecting fittings). 6).

  In the present embodiment, as shown in FIG. 3, a plurality of connecting brackets (in the illustrated example, two first connecting brackets 6, two second connecting links) are connected to one panel leg 5 to connect a plurality of beam frames. A metal fitting X6) is attached. And the 1st beam frame 4 (refer FIG. 2) which supports the depth direction center part of each top-plate element 21 to the one panel leg 5 via these connection metal fittings (the 1st connection metal fitting 6 and the 2nd connection metal fitting X6). ), Two second beam frames (not shown) for supporting the counter-use end 21b side of each top plate element 21 are connected. The first beam frame 4 and the second beam frame have the same basic structure, such as a pipe shape, except that the height dimension and the dimension along the depth direction of the top plate 2 are different. Further, as shown in FIG. 3, a first connection fitting 6 for connecting the first beam frame 4 to the panel leg 5 and a second connection fitting 6X for connecting the second beam frame to the panel leg 5 are also provided. Although the height dimension and the dimension along the depth direction of the top plate 2 (width direction of the panel leg 5) are different corresponding to each beam frame, the basic structure is the same. Below, the aspect which connects the 1st beam frame 4 and the panel leg 5 via the 1st connection metal fitting 6 is explained in full detail.

  As shown in FIGS. 2, 4 to 6, and the like, the first connection fitting 6 includes a first connection fitting main body 61 made of sheet metal having a pair of opposing side walls 611, and a side wall 611 of the first connection fitting main body 61. And a first inner cover fitting 62 made of sheet metal having a second side wall 621 that can be attached to each of the inward surfaces. The “inward end” used below in describing the connecting bracket refers to “the end of the connecting bracket that is relatively closer to the beam frame”, and the “outer end” refers to the “relative of the connecting bracket. In particular, it refers to the end far from the beam frame.

  The first connection fitting main body 61 integrally includes a pair of side walls 611, an upper wall 612 that connects between the upper ends of the side walls 611, and a pair of insertion walls 613 that can be inserted into the internal space of the panel legs 5. is there.

  A through hole 611a penetrating in the thickness direction is formed at a position close to the inner end of each side wall 611. A pin-shaped first fixed frame P1 spanning the through holes 611a is fixed by a fixture R1 such as an E-ring. Each of the through holes 611a and the first fixed frame P1 has a substantially D shape with a part of a circle cut off, and prevents the first fixed frame P1 from rotating in the through hole 611a. Moreover, the screw hole P11 penetrated in the diagonal direction in the state over the through-hole 611a is formed in the longitudinal direction center part of the 1st fixed frame P1. Positioning projections 611b projecting inward from other regions are provided at the lower end portion at the inner end of each side wall 611. In the present embodiment, the shape of the positioning protrusion 611b is set to a taper shape in which the projecting dimension is gradually increased downward.

  The upper wall 612 is set so that its inner end is substantially flat with the portion of the inner end of each side wall 611 where the positioning protrusion 611b is not provided.

  The pair of insertion walls 613 extend from the outer end of the side wall 611 further outward and downward simultaneously. In the present embodiment, the insertion wall 613 is continuously provided from the region on the lower end side of the outer end of each side wall 611. Each insertion wall 613 is long in the height direction, and its lower end is positioned below the lower end of each side wall 611 and the bottom wall 622 of the first inner cover metal fitting 62 to be described next.

  The first inner cover metal fitting 62 integrally includes a second side wall 621 that can be in contact with the inward surface side of the side wall 611 of the first connecting metal fitting body 61 and a bottom wall 622 that connects between the lower ends of the second side wall 621. I have it.

  Each of the second side walls 621 has a second through hole 621a that can communicate with the through hole 611a in a state where the second side wall 621 is in contact with the side wall 611 of the first connection fitting main body 61. The second through-hole 621a has a substantially circular shape, and the opening diameter thereof is set to be approximately the same as or slightly larger than the opening diameter of the circular region in the through-hole 611a of the first connection fitting main body 61. The first inner cover fitting 62 is integrally assembled to the first connecting fitting main body 61 by spot-welding a predetermined portion with the outward face of each of the second side walls 621 being in contact with the inward face of the side wall 611. Yes. In this assembled state, the inward end of the second side wall 621 is set to protrude inward from the inward end of the side wall 611. In addition, the inner end of the bottom wall 622 protrudes further inward than the inner end of the second side wall 621 and the tip (inward end) of the positioning protrusion 611b of the side wall 611.

  Such a first connection fitting 6 is assembled in a state where the insertion wall 613 of the first connection fitting main body 61 is inserted into the internal space of the panel leg 5.

  As shown in FIGS. 2, 3, 7 to 9, and the like, the panel leg 5 is an assembly in which an outer panel 51 and an inner panel 52 are assembled to each other, and a plurality of grounding bodies 53 are provided at the lower end. . In this embodiment, the thickness dimension of the panel leg 5 is set sufficiently thinner than the conventional one, and a wide leg space is formed under the top board 2. The panel leg 5 has a reinforcing portion interposed in an internal space formed between the outer panel 51 and the inner panel 52. In this embodiment, the 1st reinforcement part 54 and the 2nd reinforcement part 54X are arranged in relation to the location which attaches the 1st connection metal fitting 6 and the 2nd connection metal fitting 6X. Although the first reinforcing portion 54 and the second reinforcing portion 54X are different in height and the like, the first reinforcing portion 54 and the second reinforcing portion 54X are the same in that both are made by bending a single sheet metal material into a substantially hat shape in plan view. Hereinafter, the 1st reinforcement part 54 provided in relation with the location which attaches the 1st connection metal fitting 6 is demonstrated.

  The first reinforcing portion 54 extends from the both side edges along the height direction of the first attachment wall 541 toward the inner panel 52 and corresponds to the first attachment wall 541 that can contact the outer panel 51. A pair of opposing walls 542 and a pair of second attachment portions 543 that extend in directions away from the inner ends of the opposing walls 542 and can contact the inner panel 52 are integrated. is there. In the present embodiment, predetermined portions of the second attachment portions 543 are spot welded to the inner panel 52. Then, as shown in FIG. 8, the inner spacing distance between the pair of opposing walls 542 is set to be approximately the same as or slightly larger than the outer spacing distance between the pair of insertion walls 613. With the insertion wall 613 inserted, the insertion wall 613 and the opposing wall 542 can be brought into contact with each other. Note that the opposing wall 542 and the insertion wall 613 that are in contact with each other are fixed by spot welding. As a result, the first connection fitting 6 is assembled to the panel leg 5 integrally. In the present embodiment, welding is also applied to a boundary portion between the panel leg 5 and the side wall 611 of the first coupling metal body 61 (see FIG. 2).

  On the other hand, the first beam frame 4 has a substantially square cylindrical shape integrally including a pair of opposing side walls 41, an upper wall 42, and a bottom wall 43, and penetrates in the thickness direction at both ends of the opposing pair of side walls 41, respectively. A through-hole 41a is formed. A pin-shaped second fixed frame P2 spanning the through holes 41a is fixed by a fixture R2 such as an E-ring. Each of the through holes 41a and the second fixed frame P2 has a substantially D shape obtained by cutting out a part of a circle, and prevents the second fixed frame P2 from rotating in the through hole 41a. In addition, a bolt insertion hole P21 that penetrates in the oblique direction in a state of being spanned over the through hole 41a is formed in the central portion in the longitudinal direction of the second fixed frame P2. In the vicinity of both ends of the upper wall 42 of the first beam frame 4, an opening window 42 a for inserting and removing the bolt BL into the first beam frame 4 is formed. In addition, you may mount | wear with the bolt holder for preventing the bolt BL falling deeply in the interior space of the 1st beam frame 4 in relation to the opening window 42a. In addition, a cut portion 41b that is cut obliquely in correspondence with the positioning protrusion 611b of the first connection fitting main body 61 is provided at the lower end portion on the inner end side of each side wall 41.

  Next, the procedure and operation of connecting the first beam frame 4 and the panel leg 5 to each other via the first connecting fitting 6 will be described with reference to FIG.

  First, the end face of the first beam frame 4 is brought into contact with or close to the inner end face of the first connecting fitting body 61 in the first connecting fitting 6. At this time, the downward surface of the upper wall 42 of the first beam frame 4 is inward of the second side wall 621 of the first inner cover fitting 62 than the side wall 611 of the first connection fitting main body 61 (in other words, the first side The first beam frame 4 is prevented from unexpectedly falling off in a state where the relative position between the first beam frame 4 and the first connection fitting 6 is temporarily determined by hitting the upward surface of the portion protruding to the beam frame 4 side) Yes. That is, the second side wall 621 of the first inner cover metal fitting 62 functions as a drop prevention means for preventing the first beam frame 4 from falling off the first connecting metal fitting 6. In the present embodiment, since the cut portion 41b is formed at the lower end portion of the side end portion of the first beam frame 4, the first beam frame 4 covers the inner end of the first connection fitting 6 from above. Even if attached, the lower end portion of the first beam frame 4 does not hit the second side wall 621 of the first inner cover fitting 62, and the end surface of the cut portion 41b abuts on the positioning projection 611b and is set at a predetermined position. , Mounting work can be performed smoothly. Further, the inward surface of each side wall 41 of the first beam frame 4 is brought into contact with the outward surface of the second side wall 621 of the first inner cover metal fitting 62, so that the width of the first beam frame 4 with respect to the first connection metal fitting 6 is increased. The relative position along the direction (depth direction of the top plate 2) is positioned. That is, each second side wall 621 of the first inner cover metal fitting 62 and each side wall 41 of the first beam frame 4 are along the width direction of the first beam frame 4 with respect to the first connection fitting 6 (depth direction of the top plate 2). It functions as a positioning means for positioning the relative position.

  Then, in a state where the end face of the first beam frame 4 is in contact with or close to the end face on the first beam frame 4 side of the first connection fitting main body 61, the screw holes P11 and the second holes of the first fixed frame P1. The opening direction of the bolt insertion hole P21 of the fixed frame P2 is arranged in a virtual straight line, and the bolt BL inserted obliquely from above into the bolt insertion hole P21 is fastened to the screw hole P11 using the second fixed frame P2 as a scaffold. By tightening the bolts BL into the screw holes P11 of the first fixed frame P1 fixed to the first connecting bracket 6 in this way, the first fixed frame P1 and the second fixed frame P2 are pulled in the direction of approaching each other. The force becomes a force that presses the end surfaces of the connection first connection fitting 6 and the first beam frame 4, and the end surfaces of the first beam frames 4 and the end surfaces of the first connection fitting main body 61 are in surface contact with each other and are high. Mounting strength is obtained. Here, the bolt BL and the screw hole P11 of the first fixed frame P1 function as the fastening means of the present invention. Further, in the process of tightening the bolt BL into the screw hole P11, the cut portion 41b of the first beam frame 4 is pressed against the positioning protrusion 611b without tapering due to the taper action, and each first beam frame 4 has a height. It fixes to the 1st connection metal fitting 6, playing the positioning action of a direction. That is, the positioning protrusion 611b and the cut portion 41b function as positioning means for positioning the relative position along the height direction of the first beam frame 4 with respect to the first connection fitting 6, and the connection work can be performed smoothly. In the state where the first beam frame 4 and the panel leg 5 are connected via the first connection fitting 6, at least the upper surface of the first beam frame 4 (upward surface of the upper wall 42) and the first connection fitting. 6 (the upward surface of the upper wall 612 of the first connection fitting main body 61) is substantially flush with each other so that the downward surface of the top plate 1 hits these flush areas.

  As described above, the connection structure according to the present embodiment is common to the first beam frame 4 and the second beam frame, and the second connection bracket 6X for connecting the second beam frame to the panel leg 5 is Since the basic structure and principle are the same as those of the first connection fitting 6 described above, a detailed description of the connection structure between the second beam frame and the panel leg 5 via the second connection fitting 6X is omitted. Further, the support structure 3 of the present embodiment has one intermediate leg 7 disposed at the center in the depth direction of the top plate 2 and is supported by the intermediate leg 7 and extends along the depth direction of the top plate 2. An arm (not shown) is provided, and the arm and the beam frame (the first beam frame 4 and the second beam frame) can be connected to each other via a connection fitting (the first connection fitting 6 and the second connection fitting 6X). I am doing so.

  3 is not for connecting the beam frame to the panel leg 5, but for the function of supporting the top board 2. is there. Further, the top plate bracket 8 is firmly fixed to the third reinforcing portion 54 </ b> Y of the panel leg 5.

  As described above, the connection structure between the beam frame and the panel leg according to the present embodiment has the first beam frame 4 and the panel leg 5 via the first metal fitting 6 made of sheet metal provided in the vicinity of the upper end portion of the panel leg 5. Therefore, it is not necessary to prepare a dedicated mold at the manufacturing stage compared to the embodiment using an integrally molded product made of aluminum die cast as the connecting member, and thus the manufacturing cost is reduced, and consequently It is possible to reduce the total cost and to effectively simplify the structure and weight of the connecting metal fitting 6 itself. Moreover, the first fixed bracket P <b> 1 spanned between the side walls 611 of the first connection fitting 6 and the first beam frame 4 are opposed to each other even though the first connection fitting 6 made of sheet metal has such merits. The end face of the first connecting fitting 6 and the end face of the first beam frame 4 are brought into contact with each other by the fastening means that draws and fastens the second fixed support member P2 spanned between the pair of side walls 41 in the direction of approaching each other. Therefore, high connection strength can be obtained. Further, when the fixed frames (first fixed frame P1, second fixed frame P2) are drawn together by the tightening means, the force is applied to each via the first fixed frame P1 and the second fixed frame P2. It acts along the face plate direction of the side wall (side wall 611, side wall 41), and therefore the attraction force by the tightening means acts to dent each side wall (side wall 611, side wall 41) in the thickness direction. In addition, even if the first connection fitting 6 and the first beam frame 4 are made of a relatively thin sheet metal material, the end faces can be sufficiently brought into pressure contact with each other. 4 can be securely fixed. As a result, it is possible to increase the strength of the entire support structure 3 that supports the top plate 2.

  In particular, since the first connection fitting 6 integrally has an insertion wall 613 that can be inserted into the internal space of the panel leg 5, and the insertion wall 613 is welded to the first reinforcing portion 54 of the leg panel 5. The strength of the entire panel leg 5 is increased by the one reinforcing portion 54, and the insertion wall 613 is welded to the first reinforcing portion 54, so that the screw fixing work is not required, and the first connecting fitting 6 and the panel leg 5 are assembled. Strength can be increased. Further, the assembly process can be simplified by welding the first connecting fitting 6 to the first reinforcing portion 54 in a series of welding work steps for welding the first reinforcing portion 54 to the inner panel 52 or the outer panel 51. be able to.

  In addition, since the first connection fitting 6 is provided with the insertion wall 613 continuously on each side wall 611 and the pair of insertion walls 613 are welded to the corresponding opposing walls 542, the first connection fitting 6 The attachment strength with the panel leg 5 can be further increased, and the problem that the first connecting fitting 6 is bent and deformed by a load applied to the first connecting fitting 6 can be solved. Further, the opposing wall 542 also functions as a guide portion that guides the insertion destination of the insertion wall 613, and the insertion operation of the insertion wall 613 can be performed smoothly and accurately.

  Further, the first connection fitting 6 includes a first connection fitting main body 61 having a pair of side walls 611 and a second metal plate made of metal plate having a second side wall 621 that can be brought into contact with the inward surface of the side wall 611 of the first connection fitting main body 61. 1 with an inner cover metal fitting 62. The second side wall 621 protrudes from the side wall 611 to the first beam frame 4 side, and the upper wall of the first beam frame 4 is projected upward from the second side wall 621. 42 so that the first beam frame 4 can be prevented from falling off, and a combination of the first connection fitting body 61 and the first inner cover fitting 62 both made of sheet metal. Such dropout prevention means can be realized only by the above.

  Further, the first connecting fitting 6 projects the second side wall 621 of the first inner cover fitting 62 toward the first beam frame 4 side from the side wall 611 of the first connecting fitting main body 61, and the outward surfaces of the second side walls 621. Since the inward surface of the side wall 611 of the first beam frame 4 can be brought into contact with the first beam frame 4, positioning along the width direction of the first beam frame 4 (depth direction of the top plate 2) with respect to the first connection fitting 6 is performed. It is possible to prevent the lateral displacement of the first beam frame 4 with respect to the first connection fitting 6.

  In addition, since each second side wall 621 of the first inner cover metal fitting 6 is welded to the corresponding side wall 611 of the first connection metal fitting main body 61, the set of the first connection metal fitting body 61 and the first inner cover metal fitting 62 is assembled. The attachment strength can be effectively increased, screwing is not required, and the first inner cover fitting 62 and the first connecting fitting main body can be assembled together in a series of welding processes when the leg panel 5 is assembled. it can.

  Further, in the furniture with a top plate 1 according to this embodiment, the support structure 3 that supports the top plate 2 includes a beam frame (first beam frame 4 and second beam frame) and a panel leg 5. The frame (the first beam frame 4 and the second beam frame) and the panel leg 5 are connected to each other through the above-described connection fittings (first connection fitting 6 and second connection fitting 6X), and the connection fitting ( The end face of the beam frame (first beam frame 4, second beam frame) side and the end face of the beam frame (first beam frame 4, second beam frame) of the first connection fitting 6 and the second connection fitting 6X). Since they are abutted against each other, the effect of the connecting structure described above is exerted, and the strength of the entire support structure 3 formed by connecting these beam frames (first beam frame 4 and second beam frame) and the panel legs 5 is achieved. And the stable support state of the top plate 2 is obtained. It is possible. Further, the beam frame (the first beam frame 4 and the second beam frame) is coupled to the panel leg 5 by firmly connecting the beam frame (the first beam frame 4 and the second beam frame) and the panel leg 5. The problem that the attachment position is shifted can be avoided, and even when the top plate 2 is not rigid, such as a wooden plate, the top plate 2 is prevented from being bent and deformed (bowing) and reliably supported. can do.

  The present invention is not limited to the embodiment described in detail above.

  For example, the beam frame and the connecting metal fitting may be substantially round pipes. In this case, the walls facing each other in the direction perpendicular to the height direction of the round pipe correspond to “a pair of side walls”.

  In the above embodiment, different types of connection fittings (first connection fitting and second connection fitting) are used corresponding to different types of beam frames (first beam frame, second beam frame). If all the beam frames are of the same type, it is needless to say that the same type of connection fittings may be used.

  The number of connection fittings attached to one leg may be appropriately increased or decreased in accordance with the number of beam frames connected to the leg.

  Moreover, you may apply a gate-shaped leg instead of a panel leg as a leg.

  Moreover, you may assemble | attach integrally a connection metal fitting in the aspect other than welding, for example, the aspect fixed using a volt | bolt and a nut.

  Moreover, you may apply what consists only of a single sheet metal raw material as a connection metal fitting.

  The insertion wall of the connection fitting may be a single wall provided continuously to a portion (for example, the upper wall) other than the side wall of the connection fitting.

  Further, a part of the connection fitting may be placed on the upward surface of the leg, and the load of the top plate placed on the upper wall of the connection fitting may be efficiently received by the leg.

  Moreover, as a 1st fixed frame material and a 2nd fixed frame material, it replaces with a substantially D-shaped pin and you may apply a substantially plate-shaped or substantially circular frame material.

  The tightening means is inserted through the bolt insertion hole formed in the first fixed frame member, and the first fixed frame member is used as a scaffold, and the bolt is screwed into the screw hole formed in the second fixed frame member for the first fixing. You may draw and tighten a base material and a 2nd fixed base material in the direction to approach.

  Moreover, in the said embodiment, although the table provided with the large top plate was illustrated as furniture with a top plate, it is not restricted to this, It is used in a table provided with a small top plate, or an office etc. as furniture with a top plate. You may apply a desk.

  Furthermore, the top plate is not limited to a wooden one, and may be made of steel or other materials.

  In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

The whole perspective view of the furniture with a top plate to which the connection structure of the beam frame concerning one embodiment of the present invention is applied. The disassembled perspective view for demonstrating the connection structure of the beam frame and panel leg concerning the embodiment. The figure which abbreviate | omits and shows the panel leg seen from the A direction of FIG. The side view of the connection metal fitting which concerns on the same embodiment. The C direction arrow directional view of FIG. The D direction arrow directional view of FIG. The B area enlarged view of FIG. E direction arrow view of FIG. FF sectional view taken on the line of FIG. Action explanatory drawing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Furniture with a top plate 2 ... Top plate 3 ... Support structure 4 ... Beam frame (1st beam frame)
41 ... Side wall 42 ... Upper wall 5 ... Leg (panel leg)
51 ... Outer panel 52 ... Inner panel 54, 54X ... Reinforcement part (first reinforcement part, second reinforcement part)
542... Opposing wall 6, 6 X... Connection bracket (first connection bracket, second connection bracket)
61 ... Connecting bracket body (first connecting bracket body)
611 ... Side wall 613 ... Insertion wall 62 ... Inner cover metal fitting (first inner cover metal fitting)
621 ... 2nd side wall P1 ... 1st fixed frame P11 ... Screw hole P2 ... 2nd fixed frame P21 ... Bolt insertion hole

Claims (6)

It is a connecting structure of a beam frame and a leg applied when connecting a pipe-like beam frame arranged on the lower surface side of the top plate and a leg,
Of the legs, at the location where the beam frame is connected, a metal plate connection bracket having at least a pair of side walls is provided,
By tightening means for pulling and tightening the first fixed frame spanned between the side walls of the connecting bracket and the second fixed rack spanned between the pair of opposite side walls of the beam frame in a close-up direction, The end face on the beam frame side and the end face of the beam frame of the coupling metal are abutted against each other ,
The leg body is a panel-like one in which the inner panel and the outer panel are assembled to each other, and a reinforcing part is interposed in the inner space formed between the inner panel and the outer panel,
The connection fitting is integrally formed with an insertion wall that can be inserted into the internal space of the leg, and the insertion wall is welded to a reinforcing portion.
The reinforcing portion includes a pair of opposed walls extending from one of the inner panel and the outer panel toward the other panel and facing each other along the width direction of the panel. A connecting structure of a beam frame and a leg, in which a metal fitting is provided with the insertion wall continuously on each side wall, and the pair of insertion walls are welded to the corresponding opposing walls . The connection fitting comprises a connection fitting main body having the pair of side walls, and a sheet metal inner cover fitting having a second side wall that can be brought into contact with the inward surface of the side wall of the connection fitting main body,
The second side wall of the inner cover metal fitting is protruded to the beam frame side from the side wall of the connecting metal fitting body so that the downward surface of the upper wall of the beam frame can hit the upper surface of the second side wall. The connecting structure of a beam frame and a leg according to claim 1 . The connection fitting comprises a connection fitting main body having the pair of side walls, and a sheet metal inner cover fitting having a second side wall that can be brought into contact with the inward surface of the side wall of the connection fitting main body,
The second side wall of the inner cover metal fitting projects from the side wall of the connecting metal fitting body to the beam frame side so that the inward surface of the side wall of the beam frame can be in contact with the outward surface of the second side wall. The connection structure of a beam frame and a leg according to claim 1 or 2 . The connection structure of a beam frame and a leg according to claim 2 or 3, wherein each second side wall of the inner cover metal fitting is welded to a corresponding side wall of the main body of the connection metal fitting . The tightening means is inserted through a bolt insertion hole formed in one of the first fixed frame and the second fixed frame, and the bolt is used as a scaffold for the other fixed frame. 5. The first fixed frame member and the second fixed frame member are drawn and tightened in a direction close to each other by screwing into a screw hole formed in the fixed frame member . Connecting structure of beam frame and legs. A furniture with a top plate comprising a top plate and a support structure for supporting the top plate,
The support structure comprises a pipe-like beam frame disposed on the lower surface side of the top plate, and legs.
A furniture with a top plate, wherein the beam frame and the leg are connected to each other using the connection structure of the beam frame and the leg according to claim 1, 2, 3, 4 or 5 .

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