JP3690310B2 - Folding chair - Google Patents

Description

[0001]
[Industrial application fields]
  The present invention relates to a folding chair, and more particularly to a folding chair that is folded during transportation and can be deployed and used when enjoying outdoor life.
[0002]
[Prior art]
  Folding chairs that are folded during transportation or storage and that are unfolded during use are known, for example, in which legs are assembled in an X shape so that they can be folded together. Then, a flexible seat formed by canvas cloth or the like is attached to each upper edge of the X-shaped leg member, and the flexible seat part is expanded flat by unfolding the X-shaped leg member. What is made is known. In such a folding chair, when it is seated on the flexible seat, a force that squeezes each X-shaped leg member works, and even if it is simple, it is very comfortable to sit on. It has become a bad thing.
[0003]
  For this reason, in order to improve the sitting comfort, various structures are proposed in Japanese Utility Model Laid-Open No. 7-7545, Japanese Utility Model Laid-Open No. 7-24151, and the like. As shown in FIG. 12, the folding chair shown in Japanese Utility Model Publication No. 7-7545
  “X-shaped links 4 and 4 that pivotally connect the front legs 2 and 2, the rear legs 3 and 3, the receiving portion 8 that is loosely fitted to each leg, and the grounding device 9 that supports each leg, and the four corners are receiving portions 8, a seat portion 6 supported by 8, a backrest 7 provided between the extending portions 3 a and 3 a of the rear leg 3, and an armrest 10 including a fixed side member 12 and a folding side member 11 connected by a hinge 15. When folding the folding chair 1, the four legs are moved to the center, and a guide member having a T-shaped cross section fixed to the upper end of the extending portion 2a of the front leg 2 is provided at the lower part of the armrest 10. The guide groove is slid to move to the guide groove below the fixed side member 12. Then, the side member is folded by the hinge 15 so as to follow the bundled legs 2, 2, 3 and 3 which are brought close to the center. Fold 11 ”
Is.
[0004]
  Since the conventional folding chair shown in FIG. 12 uses an X-shaped link to connect the front and rear legs to each other, it does not generate a force to squeeze each leg when seated on the seat. Although improvements have been made, this time, the “armrest 10” has reached a high position, and the armrest 10 itself has become unusable. This is because the “fixed side member 12” must be connected to the upper part of the “rear leg 3” in order to make the whole foldable.
[0005]
  In order to improve the position of the armrest, a folding chair as shown in the above-mentioned Japanese Utility Model Publication No. 7-24151 has been proposed, but as shown in FIG.
  "Crossed in the shape of an X when viewed from the side of the chair, and a pair of leg rods that can be rotated around this intersection point are provided on the left and right sides, and a backrest and an armrest are connected to each leg. In addition, a pair of links crossed in an X shape when viewed from the front of the chair and pivoted around the crossing point are provided at the front and back, and the upper ends of the links are the upper parts of the corresponding ones of the leg rods. The lower end of each link is pivotably connected to the lower part of the corresponding one of the leg rods so that it can be folded to reduce the width of the front and side surfaces. ''
Is. In the folding chair shown in FIG. 13, when the chair is folded, the left and right “other ends 15 of the armrest 14” are removed from the “backrest 13” using its elasticity, Positioning and fixing or connecting the “other end 15” to the “backrest 13” while applying force so that the “seat seat 17” is taut, the deployment workability is very poor It is.
[0006]
  Therefore, the present inventors have solved the problems as described above for this type of folding chair that is convenient to use in outdoor life and the like, and how to improve its usability. The present invention has been completed as a result of various studies on whether or not it is good.
[0007]
[Problems to be solved by the invention]
  The present invention has been made on the basis of the above circumstances, and the problem to be solved is that the stability when deployed and used is excellent, and that folding and unfolding operations can be easily performed. It is to be.
[0008]
[Means for Solving the Problems]
  In order to solve the above problems, first, the means taken by the invention according to claim 1 will be described with reference numerals used in the description of the embodiments described later.
  “Placed at the rear of the seating positionAnd can be folded and unfolded by the X-shaped link 70.In-post 10 and at least the upper end rises forwardTwo elbows that can be folded and unfolded with respect to the main column 10 by means of the X-shaped link 70A folding chair 100 comprising a hanging connection column 20 and at least one armrest 30 whose front end is rotatably connected to the upper end of the armrest connection column 20,
  elbowThe rear of the hanging 30The slidable relative to the main column 10As well as
  A lock member 50 having a first lock opening 51 and a second lock opening 52 opened in a direction orthogonal to the first lock opening 51 is attached to the rear end of the armrest 30, and the first lock is set when the chair 100 is folded. The opening 51 is fitted to the lower part of the main column 10, and the second lock opening 52 is fitted to the middle part of the main column 10 when deployed to stabilize the chair 100 when folded and deployed. thingFolding chair 100 featuring "
It is.
[0009]
  That is, the folding chair 100 according to the first aspect uses the X-shaped link 70 as in the conventional chair shown in FIG. 12 or FIG. 13 and “folds” as shown on the left side of FIG. Can be expanded as shown inThe rear of the hanging 30By being slidably connected to the main support 10, the position of the armrest 30 can be arranged outward from that shown in FIG. 12, and the seating use can be made stable. . In addition, this folding chair 100 is an elbow.Hanging 30 rearBy being relatively slidably connected to the main support column 10, the armrest 30 can be reliably connected to the folding chair 100 to facilitate the folding and unfolding operations. .
[0010]
  This elbow30 rearThe "slidable connection" with respect to the main support column 10 means that the two are connected while being slidable with each other even when they are positioned between them, as well as at the time of expansion and folding. doing. Various means for making this slidable are conceivable. As shown in FIG. 6A, the guide 11 is guided in the engaging portion 33 which is a long “groove”. Of course, as shown in FIG. 6B, a long slide rail 33b that is the engaging portion 33 may be used, or an extended type such as a multistage antenna may be employed. It ’s good.
[0011]
  Also this elbow30 rear“To be relatively slidably coupled” with respect to the main column 10 means that the main column 10 and the armrest 30 are slidable with respect to the armrest 30 on the condition that the main column 10 and the armrest 30 can slide relative to each other. Conversely, the case where the armrest 30 side slides with respect to the main column 10 is also included. For this purpose, as shown in FIGS. 6A, 7 and 8, the guide 11 attached to the intermediate portion of the main column 10 is engaged with the engaging portion 33 formed on the back surface of the armrest 30. Of course, as shown in FIG. 6B, a long slide rail 33b, which is an engaging portion 33 provided on the armrest 30 side, is guided to the main column 10 side as shown in FIG. It may be implemented so as to be guided by the tool 11 (in this case, a pair).
[0012]
  Furthermore, in the embodiment shown in FIG. 1 and the like, the case where the armrests 30 are provided on both the left and right sides of the seating portion is illustrated, but the armrests 30 are provided on either one of the left and right sides of the seating portion. It may be. This is because “relatively slidably connecting” may be sufficient if it is performed on one armrest 30.
[0013]
  In particular, since the folding chair 100 according to claim 1 is connected to the main column 10 of the armrest 30 as described above, the position of the armrest 30 when the folding chair 100 is unfolded can be used by the user in a natural state. In other words, the usage characteristics at the time of deployment are improved.
[0014]
  As a result of the above, as shown in FIG. 6, each armrest 30 is slidably connected to the main support column 10 when the folding chair 100 is folded or unfolded and in the middle thereof. In addition, the folding and unfolding operations can be performed smoothly, and stability at the time of completion of folding and unfolding is sufficiently ensured.
[0015]
  Further, with respect to the folding chair 100, a lock member 50 having a first lock opening 51 and a second lock opening 52 opened in a direction perpendicular to the first lock opening 51 is attached to the rear end of the armrest 30. When the chair 100 is folded, the first lock opening 51 is fitted to the lower part of the main column 10, and when the chair 100 is unfolded, the second lock opening 52 is fitted to the middle portion of the main column 10, so that the chair 100 is folded and Stabilization during deployment is planned.
[0016]
  That is, the folding chair 100 according to the first aspect of the present invention is such that the lock member 50 as shown on the right side of FIG. 4 is positively provided on the armrest 30, and the lock member 50 is as shown in FIG. In addition, a first lock opening 51 that is engaged with the lower end of the main column 10 when folded, and a second lock opening 52 that is engaged with the upper portion of the main column 10 when deployed, as shown in FIGS. It is what has. As shown on the right side of FIG. 4, the lock member 50 of the embodiment described below is configured such that the insertion directions of the first lock opening 51 and the second lock opening 52 are substantially perpendicular.
[0017]
  Each of the first lock openings 51 and the second lock openings 52 of the lock member 50 can be fitted to the main column 10 formed by a round pipe, and in order to prevent it from being easily removed after fitting, An engagement protrusion is formed inside the opening with a circular shape.
[0018]
  When the folding chair 100 is folded, the lock member 50 described above is fitted to the lower end portion of the main column 10 so that the first lock opening 51 is engaged with the rear end of the armrest 30 as shown on the left side of FIG. The side is fixed to the lower part of the main column 10. Further, as shown on the right side of FIG. 4, the rear end side of the armrest 30 is fixed to the intermediate portion of the main column 10 and the state is maintained. The operation of fitting or removing the first lock opening 51 or the second lock opening 52 with respect to the main column 10 is performed by the lock member 50 being provided at the tip of the armrest 30 and the armrest 30 being the upper end of the armrest connection column 20. Since it is pivotally connected to each other, it can be easily performed.
[0019]
  Therefore, the folding chair 100 according to the first aspect enables the user to use the position of the armrest 30 at the time of unfolding in a natural state, and improves the use characteristics at the time of unfolding. In addition, the folding chair 100 is reliably maintained in the unfolded state and folded state, and sufficiently secures stability during use as well as during storage and transportation.
[0020]
  Moreover, in order to solve the above-mentioned subject, the means which invention which concerns on Claim 2 took about the folding chair 100 of the said Claim 1,
  "Each elbowThe rear 30The relatively slidable connection to the in-post 10 is achieved by engaging the guide 11 that is integrally fixed to the middle part of each main support 10 or the armrest 30 with the engaging part 33 of the armrest 30 or the main support 10. What I did "
It is.
[0021]
  That is, the folding chair 100 according to claim 2 is provided with each elbow.The rear 30FIG. 6A illustrates a relatively slidable connection with the in-post 10, and as illustrated in FIGS. 6A, 7, and 8, an engagement portion 33 formed on the back surface of the armrest 30. Of course, the guide 11 attached to the middle part of the main column 10 may be engaged with, for example, the front end 12 as shown in FIG. The long slide rail 33b which is the engaging portion 33 may be guided by a pair of guides 11 provided on the main column 10 side.
[0022]
  For this purpose, an engagement portion 33 is formed on the back surface of the armrest 30 as shown in FIGS. 7 and 8, for example, as shown in FIG. As shown, a guide 11 attached to an intermediate portion of the main column 10 is slidably engaged. In order to engage the distal end 12 of the guide 11 in the engaging portion 33, an insertion port 33a having an opening larger than the engaging portion 33 is used. This insertion port 33a is shown in FIG. As shown in FIG. 4, the armrest 30 is formed on the front end side of the armrest connecting column 20 to be rotatably connected.
[0023]
  As a result, as shown in FIG. 6, each of the armrests 30 is connected to the main column 10 when the folding chair 100 is folded or unfolded and in the middle thereof, Since the guide 11 is slidable with respect to the engaging portion 33, not only can the folding and unfolding operations be performed smoothly, but the stability upon completion of folding and unfolding is sufficiently secured. It is.
[0024]
  Of course, since each armrest 30 is connected to the main column 10 side as described above, it is natural that the user does not have to perform a connecting operation like the conventional one shown in FIG. Since the entire body 30 can be configured by a rigid object, it is okay to place an object on the folding chair 100 that has been folded, and the use of each armrest 30 when the deployment is completed, for example, the body is leaned on the armrest 30. It's okay to let them sit or literally put their elbows.
[0025]
  Therefore, the folding chair 100 according to claim 2 exhibits the same function as that according to claim 1 described above, can be easily folded, and of course has stability at the time of deployment, The position of each armrest 30 is natural, and the stability in use and operation is very high.
[0026]
  In order to solve the above-mentioned problem, the means taken by the invention according to claim 3 is about the folding chair 100 according to claim 1 or claim 2,
  “The armrest 30 includes an armrest main body 31 in which an engagement portion 33 is formed, a holding bar 32 that is parallel to the main body 31 and connected to the armrest main body 31 at one end, and a buffer material attached to the holding bar 32. 34, and the other end of the holding bar 32 is fixed on the armrest body 31 ".
It is.
[0027]
  That is, as shown in FIG. 10, the folding chair 100 according to this third aspect has a rigid basic structure while enabling slidable connection to the main column 10 of each armrest 30, and It is a soft one that does not feel uncomfortable even if it is touched by the user's elbow or arm.
[0028]
  If this armrest 30 is configured by winding a cushioning material 34 such as a sponge 34a around a rigid bar, the armrest 30 of the guide 11 fixed to the main column 10 side. However, in the armrest 30 according to the third aspect, the connection to the guide 11 on the main column 10 side is performed on the back side of the armrest body 31 exposed from the cushioning material 34, as shown in FIG. As shown in (a), the cushioning material 34 is attached only to the holding bar 32 opened to the armrest main body 31.
[0029]
  In other words, in the folding chair 100 according to the third aspect, each armrest 30 constituting the armchair 30 includes an armrest main body 31 to be connected to the guide 11 on the main column 10 side, a sponge 34a, and a cover cloth 34b. Since the mounting process of the cushioning material 34 is configured by the holding bar 32 that can be completely independent of the connection to the guide tool 11, the mounting of the cushioning material 34 and the coupling to the main support column 10 can be performed easily and reliably. It is.
[0030]
  Therefore, the folding chair 100 according to the third aspect exhibits the same operation as that of the first or second aspect, and can easily process the armrest 30 and attach it to the main column 10.
[0031]
  And in order to solve the above problems,In item 4The measures taken by the invention are the above claims.Any of the items 1 to 3About the folding chair 100,
  “When the auxiliary lock member 60 is slidably inserted in the middle portion of the main column 10 and the chair 100 is unfolded and locked by the lock member 50, the auxiliary lock member 60 faces the lock member 50. By pushing down and pressing the locking member 50 against the main column 10 at the engaging portion 63, the stabilization during deployment is further increased. "
It is.
[0032]
  That is, this claimItem 4Folding chair 100 is billedAny one of Items 1-3Such a further improvement is added, and the locking effect of the locking member 50 when the folding chair 100 is deployed is further ensured. That means billingItem 1-3When the folding chair 100 is unfolded, the second lock opening 52 of the lock member 50 is fitted to the main column 10 side to prevent the movement of the armrests 30 with respect to the main column 10 and when used (when seated). )Item 4In the folding chair 100, as shown in FIGS. 4 and 5, after the lock member 50 is fixed to the main column 10 side through the second lock opening 52, the auxiliary lock member 60 is further pushed down from above the lock member 50. As a result, the fixing of the lock member 50 to the main column 10 is made stronger.
[0033]
  As shown in FIG. 9, the auxiliary lock member 60 is inserted in advance on the main column 10, and is inserted through the main column 10 as shown in FIG. 9B. A hole 61 is provided. In the auxiliary lock member 60 of the embodiment described below, a guide protrusion 62 that protrudes into the insertion hole 61 is formed so that the engaging portion 63 that also serves as a finger hook can always protrude outward. The guide protrusion 62 is engaged with the guide groove 13 on the main column 10 side as shown in FIG. Of course, the guide groove 13 is formed in the longitudinal direction of the main support column 10, and the engaging portion 63 is always directed outward by the guide protrusion 62 engaged with the guide groove 13. The up / down operation of the auxiliary lock member 60 on the main column 10 is performed.
[0034]
  When the auxiliary lock member 60 as described above is completely pushed down to the state shown on the left side of FIG. 5, the engaging portion 63 of the auxiliary lock member 60 constitutes the first lock opening 51 of the lock member 50. That is, the lock member 50 is fixed to the main column 10 by pressing the portion that is on the main column 10 side. Unless the auxiliary lock member 60 is removed as shown in FIG. The lock member 50 is firmly fixed to the main column 10.
[0035]
  Therefore, this claimItem 4The folding chair 100 is the above claimFold according to any of items 1-3In addition to exhibiting the same action as the folding chair 100, the locking member 50 can be more securely fixed to the main support column 10 during deployment, and the folding chair 100 can be further stabilized during use.
[0036]
DETAILED DESCRIPTION OF THE INVENTION
  Next, the invention according to each claim configured as described above will be described with respect to the folding chair 100 according to the embodiment shown in the drawings. The folding chair 100 according to this embodiment is an invention according to each of the above claims. Is substantially included.
[0037]
  Now, FIG. 1 shows the unfolded state of the folding chair 100 according to the present invention, and this folding chair 100 has a flexible seat 40 formed of canvas cloth or the like. In the flexible seat portion 40, the backrest portion 41 is also integrally formed. And as shown in FIG.1 and FIG.3, the four corners of the flexible seat part 40 of this embodiment are each fixed tool 42 fixed to the substantially middle part of the main support | pillar 10 and the armrest connection support | pillar 20 described below. In other words, it is supported like a “mosquito net”, but is not limited to this, and there is a case where each fixture 42 is not used. In addition, the bag-like part into which the upper end of the main support | pillar 10 is inserted is formed in the both sides of the backrest part 41 integral with the flexible seat part 40, The right and left inserted through this It is supported by the main column 10.
[0038]
  The folding chair 100 is provided with a backrest 41 at the upper end and a leg seat 80 at the lower end, respectively. A pair of left and right armrest connecting struts 20 and 20 whose lower ends are connected and the upper end rises forward, and front ends of the armrest connecting struts 20 are rotatably connected to the main struts 10. A pair of left and right armrests 30 that are slidably coupled to each other, a fixture 42 fixed to each intermediate portion of each main column 10 and armrest coupling column 20, and four corners coupled to these fixtures 42. Each of the main struts 10 and the armrest connecting struts 20 are connected by an X-shaped link 70 so that they can be folded and unfolded in association with each other. There it is needless to say. In addition, the lower part of each armrest connection support | pillar 20 becomes a partial structural member of the X-shaped link 70. FIG.
[0039]
  Of course, since the end of each X-shaped link 70 is unstable as it is, the upper end of each of the fixtures 42 and the like described above is provided, and the lower end of each X-shaped link 70 is independent from the leg seat 80 at the lower end of each main support column 10. Thus, it is connected to the leg seat 80 which will be located on the left and right of the front. As shown in FIG. 11, the X-shaped link 70 may be configured using a part of each main column 10, and conversely, is configured without using a part of the armrest connecting column 20. It is also possible.
[0040]
  Then, the folding chair 100 which is unfolded in the state shown in FIG. 1 and can be used, that is, can be seated, is folded as shown on the left side of FIG. They are developed in the order shown.
[0041]
  The main support column 10, the armrest connection support column 20, and the X-shaped link 70 constituting the folding chair 100 according to the present embodiment each use a round pipe material, and the connection of each part is fixed. Since it should not be, we use "screw bolts".
[0042]
  As shown in FIG. 1, each main support column 10 is positioned on both sides of the rear portion of the flexible seat 40 that is a seat when the folding chair 100 is unfolded. The fixture 42 for the flexible seat 40 is fixed to the part. A guide tool 11 as shown in FIGS. 6 and 7 is fixedly attached to a portion of the main support column 10 positioned above the fixing tool 42, and a distal end 12 of the guide tool 11 has an armrest described later. The engagement portion 33 on the 30 side is slidably engaged.
[0043]
  In addition, as shown in FIGS. 4 and 5, a guide for vertically guiding the auxiliary lock member 60, which will be described later, in a non-rotatable manner, is provided at a portion of the main column 10 positioned above the guide 11. A concave groove 13 is formed, and an auxiliary lock member 60 is inserted in the vicinity of the guide concave groove 13 of the main column 10.
[0044]
  Each armrest connecting strut 20 literally connects the front end of an armrest 30, which will be described later, as shown in FIG. 8, for example, and its lower part is rearward as shown in FIG. It is bent toward the bottom and is connected to a leg seat 80 fixed to the lower end of each main column 10 so as to be rotatable at the lower end. In addition, the lower part of each armrest connection support | pillar 20 may comprise a part of X-shaped link 70 as mentioned above, or may become a thing different from the X-shaped link 70. FIG.
[0045]
  Each armrest 30 has a front end rotatably connected to an upper end of each armrest connecting column 20 and a rear end portion slidably connected to a guide 11 provided on each main column 10. However, for example, if the flexible seat 40 is strong, only one side may be used.
[0046]
  As shown in FIG. 10, the armrest 30 includes an armrest main body 31 in which an engaging portion 33 is formed, a holding bar 32 connected to the armrest main body 31 at one end in parallel with the main body 31, and the holding It is constituted by a buffer material 34 attached to the bar 32, and the other end of the holding bar 32 is fixed on the armrest body 31.
[0047]
  In other words, as shown in FIG. 10 (d), the armrest 30 is provided with a cushioning material 34 made of a sponge 34a and a cover cloth 34b on the upper surface thereof, so that the original use does not give a hard feeling to the person. As shown in FIGS. 7 and 8, the dovetail-shaped engagement portion 33 is exposed on the lower surface side thereof, so that the armrest 30 and the main column 10 side are exposed. It is designed to enable slidable connection with the guide 11.
[0048]
  The engaging portion 33 may be formed when the armrest main body 31 and the holding bar 32 are formed of a hard synthetic resin, but a metal material having the engaging portion 33 formed in the armrest main body 31 is molded. You may make it form. Further, the engaging portion 33 may be implemented as a slide rail 33b as shown in FIG. 6B, or may be formed on the upper surface or side surface of the armrest 30.
[0049]
  The flexible seat portion 40 can be formed using various materials, but in the present embodiment, a cloth-like material using synthetic fibers is adopted so that it is safe even if it gets wet in the rain. Of course, the flexible seat portion 40 may be configured by using a net-like material instead of the cloth-like material, and is a portion for attaching to the main column 10 or the X link 70 at the four corners. May be provided.
[0050]
  As shown in FIGS. 2, 4, and 5, a lock member 50 is integrally attached to the inside of the rear end of each armrest 30. The lock member 50 includes a first lock opening 51 and a second lock opening 52 that are opened at right angles to each other, and the first lock opening 51 and the second lock opening 52 are folded in the folding chair 100. As shown on the left side of FIG. 2 showing the state or on the left side of FIG. 4 showing the expanded state, the main column 10 is fitted in each state.
[0051]
  In other words, in the folding chair 100 in the folded state, as shown in FIG. 2, the main column 10 and the armrest 30 are substantially parallel, and in the folding chair 100 in the deployed state, the folding chair 100 is shown in FIG. 1 or FIG. 4. As described above, since the main column 10 and the armrest 30 are orthogonal to each other, the lock member 50 is locked to the first lock opening 51 and the second lock orthogonal to each other so that the lock member 50 can be locked in each state. And an opening 52.
[0052]
  In the folding chair 100 in the unfolded state, the lock state of the armrest 30 with respect to the main column 10 by the lock member 50 is made stronger by the auxiliary lock member 60. That is, as described above, the auxiliary lock member 60 is inserted in advance on the main column 10, but the auxiliary lock member 60 is pushed down as shown in FIG. Accordingly, the engaging portion 63 of the auxiliary lock member 60 further presses the second lock opening 52 portion on the lock member 50 side against the main column 10 side, so that the lock member 50 is securely fixed to the main column 10. Is done.
[0053]
【The invention's effect】
  As described above in detail, first, in the invention according to claim 1, as exemplified in the above embodiment,
  “Placed at the rear of the seating positionAnd can be folded and unfolded by the X-shaped link 70.In-post 10 and at least the upper end rises forwardTwo elbows that can be folded and unfolded with respect to the main column 10 by means of the X-shaped link 70A folding chair 100 comprising a hanging connection column 20 and at least one armrest 30 whose front end is rotatably connected to the upper end of the armrest connection column 20,
  elbowThe rear of the hanging 30The slidable relative to the main column 10As well as
  A lock member 50 having a first lock opening 51 and a second lock opening 52 opened in a direction orthogonal to the first lock opening 51 is attached to the rear end of the armrest 30, and the first lock opening 51 is connected to the main column when the chair 100 is folded. 10 and the second lock opening 52 is fitted to the middle part of the main support column 10 when deployed to stabilize the chair 100 when folded and deployed."
Has a structural feature that makes it easy to perform folding and unfolding operations with excellent stability when unfolded.TogaIt can be done.And the folding chair 100 of this Claim 1 can ensure the stability at the time of the folding and unfolding.
[0054]
  Moreover, in the invention which concerns on Claim 2, about the folding chair 100 of the said Claim 1,
  "Each elbow30 rearThe relatively slidable connection to the main column 10 is performed by engaging the guide 11 that is integrally fixed to the middle portion of each main column 10 or the armrest 30 with the engagement portion 33 of the armrest 30 or the main column 10. What I did "
Thus, in addition to exhibiting the same effect as in the first aspect, for example, the rear portion of each armrest 30 is always engaged with the guide 11 provided integrally with the main column 10. Therefore, when performing the folding or unfolding operation, it is not necessary to position and connect the armrests 30 and to extend the flexible seat 40 at all. In addition, the position of each armrest 30 is natural, and the folding chair 100 can be made highly stable in use and operation.
[0055]
  Further, the folding chair 100 according to claim 3 is the same as that of claim 1 or claim 2, with each armrest 30 including an armrest body 31 and a holding bar 32 partially connected to the armrest body 31. In addition, the configuration of the cushioning material 34 attached to the holding bar 32 has a structural feature, which can exhibit the same effect as that of the first or second aspect, The slidable connecting portion of the armrest 30 with respect to each main column 10 and the relaxation performance required for the armrest 30 can be exhibited in completely different portions, and the use performance of the folding chair 100 as a whole can be improved. It was.
[0056]
  Further, the folding chair 100 according to claim 4 is a folding chair according to any one of claims 1 to 3.The folding chair 100 is characterized in that the auxiliary locking member 60 that can press the locking member 50 toward the main column 10 is further provided, and thus has the same structural features as the folding chair 100 according to claim 4. In addition to exerting the effect, the lock member 50 of the folding chair 100 at the time of deployment can be further pressed toward the main column 10 by the auxiliary lock member 60, and the stability at the time of deployment can be further enhanced. It can be done.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state in which a folding chair according to the present invention is unfolded.
FIG. 2 is a perspective view showing a folding chair in a folded state according to the present invention and how the lock member is released.
FIG. 3 is a perspective view showing a state where the folding chair is to be further expanded.
FIG. 4 is a perspective view showing a state in which the lock member is locked when the folding chair is unfolded, and an enlarged main part thereof.
FIG. 5 is an enlarged perspective view of a main part showing a state in which a locked lock member is further pressed by an auxiliary lock member.
FIG. 6 is a partially enlarged cross-sectional view showing a slidable connection by an armrest guide with respect to a main column.
FIG. 7 is a partially enlarged view showing a state in which a main post side guide is engaged with an engaging portion of an armrest.
FIG. 8 is a partially enlarged perspective view showing an armrest having a front end rotatably connected to an upper end of an armrest connecting column and a part of an engaging portion formed on the back surface of the front end.
9A and 9B show an auxiliary lock member that presses the lock member, in which FIG. 9A is a perspective view showing a positional relationship with the lock member, FIG. 9B is an enlarged plan view, and FIG. 9C is a side view.
FIGS. 10A and 10B show an armrest used in the folding chair according to the present invention and a manufacturing process thereof. FIG. 10A shows a state in which a cushioning material is attached, and FIG. 10B shows a case where a cylindrical sponge is inserted into a holding bar. (C) is a side view when a cover cloth is wound around a sponge, and (d) is a side view when the free end of the holding bar is fixed on the armrest body to form a complete armrest.
FIG. 11 is a perspective view showing a state in which a folding chair according to another embodiment of the present invention is developed.
FIG. 12 is a perspective view showing a conventional folding chair.
FIG. 13 is a perspective view showing another conventional folding chair.
[Explanation of symbols]
100 folding chair
10 Main strut
11 Guides
12 Tip
13 Guide groove
20 Armrest connecting strut
30 armrests
31 Armrest body
32 Retaining bar
33 engaging part
33a insertion slot
34 cushioning material
34a sponge
34b Surface cloth
40 Flexible seat
41 Backrest
42 Fixture
50 Locking member
51 First lock opening
52 Second lock opening
60 Auxiliary lock member
61 Insertion hole
62 Guide projection
63 engaging part
70 X-shaped link
80 legs

Claims (4)

Is located at the rear of the seating position, and two main struts a foldable and deployed by X-shaped links, rising Tachinobo least upper end at the front, folding to the main strut by the X-shaped links and two elbows multiplying strut of which is freely expanded, the front end to the upper end of the armrest strut is a folding chair with a armrests of at least one of which is rotatably connected,
The rear portion of the armrest, with connecting freely slide relatively to the main post,
A lock member having a first lock opening and a second lock opening that opens in a direction perpendicular to the first lock opening is attached to the rear end of the armrest, and when the chair is folded, the first lock opening is placed under the main column. fitted, and the second locking opening is fitted to an intermediate portion of the main strut when deployed, characterized that you have to stabilize the operation and in development folding of the chair folding chairs. The freely relatively slide connection for each armrest rear portion of the main strut, a guiding member that is integrally fixed to the intermediate portion or the armrest of each main post, engaged with the engagement portion of the armrest or main strut The folding chair according to claim 1, wherein the folding chair is performed. The armrest includes an armrest main body in which the engaging portion is formed, a holding bar that is positioned parallel to the main body and connected to the armrest main body at one end, and a buffer material attached to the holding bar. And the other end of the said holding bar was fixed on the said armrest main body, The folding chair of Claim 1 or Claim 2 characterized by the above-mentioned. Before SL keep the auxiliary lock member in an intermediate portion of the main strut slidably inserted, when the chair is made locked by the lock member is expanded, press down toward the auxiliary locking member in said locking member, at its engagement portion so as to perform the pressing to the main post of the locking member, No placing serial to any one of claims 1 to 3, characterized in that so as to enhance the stabilization at the time of deployment Folding chair.

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