Folding chair

Abstract

The utility model belongs to the technical field of folding chairs, and particularly relates to a folding chair which comprises a supporting frame and supporting legs used for supporting the supporting frame, supporting cloth is arranged on the supporting frame, the supporting frame comprises two sets of side frames arranged at intervals, each side frame comprises a first supporting rod, a second supporting rod and a third supporting rod which are sequentially connected in a rotating mode, and the supporting legs are arranged on the supporting frame. The supporting cloth is sequentially connected with the first supporting rod, the second supporting rod and the third supporting rod to form a backrest, a seat frame and a leg support of the folding chair, and the folding chair can be folded in the length direction by controlling the first supporting rod, the second supporting rod and the third supporting rod to be folded relatively; a folding unit is arranged between the two groups of side frames, the folding unit can be oppositely folded and enables the two groups of side frames to be close to each other, so that the folding chair is folded in the width direction, and the folding bed is small in size after being folded and convenient to store and transport.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of folding chair, especially relates to a folding chair. BACKGROUND

[0002] Folding chair, also known as folding deck chair, is a kind of simple chair that can be folded and stored by various folding modes for the convenience and saving of space, which is designed by joint principle. It is convenient and practical, and easy to store.

[0003] Some folding chairs on the market are three-fold structure, which has backrest, seat frame and leg support, such as a three-fold folding massage chair disclosed by Chinese utility model patent CN201820392827.5, which comprises backrest, chair leg, armrest, cushion, the lower end of the backrest is hinged to one end of the cushion, the chair leg is hinged to both sides of the cushion respectively, the armrest is hinged to the middle part of the backrest at one end, the other end of the armrest is provided with an angle control switch below, and the angle control switch is connected with the chair leg buckle; the application uses the backrest extension pipe under the gravity of the backrest, connects the two symmetrical connecting rods on both sides of the bottom to drive the foot support to rotate along the shaft joint, cooperates with the armrest and the angle control switch, so as to control the massage angle state of the massage chair, realizes the opening and folding storage of the massage chair; the connecting structure is simple and reliable, and can realize linkage with the backrest; the angle adjusting range is large, and the folding storage is realized; after adding the foot support, the comfort of the massage chair is improved, and the massage experience is better.

[0004] But the above structure can only fold the folding chair in length direction, and cannot control the folding of the folding chair in width direction, thereby affecting the storage and transportation of the folding chair. SUMMARY

[0005] In order to overcome the defects in the prior art, the utility model aims at providing a folding bed with small volume after folding and convenient storage and transportation.

[0006] The utility model aims at realizing as follows:

[0007] A folding chair, comprising a support frame and a support leg for supporting the support frame, a support cloth is arranged on the support frame, the support frame comprises two groups of interval arranged side frames, the side frame comprises a first support rod, a second support rod and a third support rod connected in turn, and the support cloth is connected with the first support rod, the second support rod and the third support rod on the two groups of side frames in sequence, so as to form the backrest, seat frame and leg support of the folding chair, and the relative folding of the first support rod, the second support rod and the third support rod can make the folding chair fold in length direction.

[0008] The folding units are arranged between the two groups of side frames, and the folding units comprise a first folding unit, a second folding unit and a third folding unit, and the first folding unit, the second folding unit and the third folding unit can control the backrest, the seat frame and the leg support to fold along the width direction of the folding chair respectively.

[0009] The first folding unit comprises a pull rod and first connecting rods rotatably connected with the first support rods of the two groups of side frames respectively, the pull rod is connected with the two first connecting rods respectively, a handle part is arranged on the pull rod, the handle part can pull the first connecting rods to rotate relative to the first support rods, so that the two groups of side frames are controlled to move away from each other or move close to each other.

[0010] The utility model further sets up: the pull rod includes the connecting rod part connected with the handle part, is provided with the hinged groove on the connecting rod part, and one end of the first connecting rod is rotatably arranged in the hinged groove, and a limiting wall is arranged in the hinged groove; the two first connecting rods are controlled to be relatively unfolded, so that the two first connecting rods abut on the limiting wall, and the first connecting rods on the two first support rods are arranged relative to each other.

[0011] The utility model further sets up: two connecting rod parts are arranged at intervals on the handle part, at least two first connecting rods are arranged on the first support rod, a hinged seat corresponding to each first connecting rod is arranged between the connecting rod parts, the hinged groove is arranged on the hinged seat, and the first connecting rod is rotatably connected with the hinged seat.

[0012] The utility model further sets up: support legs are arranged on the second support rods of the two groups of side frames, the second folding unit comprises two second connecting rods rotatably connected with the second support rods of the two sides respectively, the two second connecting rods are hingedly arranged in X shape, rotating seats are rotatably arranged at two ends of the second connecting rod respectively, and the rotating seats on the second connecting rod are rotatably connected with the second support rods on the side frame and the support legs on the other side frame.

[0013] The utility model further sets up: the third folding unit comprises third connecting rods rotatably connected with the third support rods of the two groups of side frames respectively, the two groups of third connecting rods are rotatably connected, and limiting convex edges are arranged on the two groups of third connecting rods; the two groups of third connecting rods are controlled to be relatively unfolded, so that the limiting convex edges on the two third connecting rods cooperate with each other, so that the two groups of third connecting rods are stably unfolded.

[0014] The utility model further sets up: transmission connecting rods are arranged between the first support rods and the third support rods, the transmission connecting rods are rotatably connected with the first support rods and the third support rods respectively, and the transmission connecting rods can drive the backrest and the bracket to rotate synchronously with the seat frame.

[0015] The utility model further sets up: the support legs comprise first support legs and second support legs rotatably connected, the first support legs are rotatably connected with the second support rods, rotating sleeves are rotatably arranged on the second support rods, and the second support legs are slidably connected with the rotating sleeves.

[0016] The utility model further sets up: fixedly set up the limit sleeve on the second support rod, the limit sleeve can abut on the sliding sleeve and limit the motion range of sliding sleeve on the second support rod.

[0017] The utility model further sets up: the handrail rod is rotationally arranged on the first support rod, a plurality of adjusting grooves are arranged on the handrail rod, the supporting leg is provided with the positioning rod matched with the adjusting groove, the positioning rod is controlled and is matched with different adjusting grooves to thereby the inclination angle of first support rod and second support rod.

[0018] The utility model has the advantages compared with prior art:

[0019] 1, the utility model discloses a folding unit controls two groups of side frame to unfold or fold, thereby along the width direction folding folding chair, and because side frame includes first support rod, second support rod and third support rod that rotate connection in proper order, makes folding chair can fold along the length direction, this structure makes folding chair can fully fold, reduces the volume of folding chair after folding, the storage transportation of folding chair is convenient, and because first folding unit, second folding unit and third folding unit can control backrest, seat frame and leg support along folding chair width direction folding, backrest, seat frame and leg support along folding chair width direction steady unfolding are convenient, avoid the bending of side frame in the use process even bending, and the setting of handle and first connecting rod is convenient for user to control two groups of side frame to move away or close, and the user uses conveniently.

[0020] 2, the utility model discloses that the structure of connecting rod part and hinged groove is simple, and it is convenient for two groups of side frame to fold and steady unfolding, and the setting of pull rod is convenient for user to control first connecting rod rotation, and makes two groups of side frame to move away or close, and the user uses conveniently control, and the setting of hinged groove and limit wall is convenient for the steady unfolding of first connecting rod and pull rod, avoids first connecting rod and pull rod accidental rotation in the use process, and the user uses conveniently, and the setting of two connecting parts is convenient for the stable installation of hinged seat, and the first connecting rod on first support rod is convenient for the stable support of first folding unit to two groups of first support rod, avoids the bending damage of first connecting rod under excessive force.

[0021] 3, the utility model discloses that the structure of two second connecting rods and rotary seat that hinge is X-shaped is simple, and it is convenient for production and processing, and because second folding unit is connected with supporting leg and is convenient for the stable support of supporting leg to second support rod, and the setting of rotary seat is convenient for second connecting rod with supporting leg to rotate relative to second support rod, and the user controls two groups of second support rod folding or unfolding conveniently, and the structure of two groups of rotary connection third connecting rods is simple, and it is convenient for production and processing, and the setting of limit protruding is favorable to the stable unfolding of third folding unit, avoids two groups of third connecting rods accidental folding in the use process.

[0022] 4. The transmission connecting rod is convenient for the synchronous movement of the first supporting rod and the third supporting rod, and the folding chair can be quickly folded; the plurality of adjusting grooves and the positioning rod are convenient for the folding chair to maintain a plurality of unfolded states, and the user can use flexibly.

[0023] 5. The first supporting leg and the second supporting leg connected in rotation are convenient for folding and storing the supporting leg, the folding chair can be folded more fully, the volume of the folding chair after folding is reduced, the folding chair is convenient for storage and transportation, the first supporting leg, the second supporting leg, the second supporting rod and the sliding sleeve form a crank slider mechanism, the folding chair is convenient for flexible unfolding and folding; the limiting sleeve is convenient for limiting the movement range of the sliding sleeve, and is conducive to the stable unfolding of the first supporting leg and the second supporting leg, and is convenient for the user to use. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic view of the utility model;

[0025] Figure 2 is a structural schematic view of the utility model of removing the supporting cloth;

[0026] Figure 3 is a folding state diagram after removing the supporting cloth of the utility model;

[0027] Figure 4 is an explosion schematic view after removing the supporting cloth of the utility model;

[0028] Figure 5 is a structural schematic view of the side frame and the transmission connecting rod connection in the utility model;

[0029] Figure 6 is a structural schematic view of the supporting leg in the utility model;

[0030] Figure 7 is a structural schematic view of the armrest rod in the utility model;

[0031] Figure 8 is a structural schematic view of the first folding unit in the utility model;

[0032] Figure 9 is a structural schematic view of the hinge seat in the utility model;

[0033] Figure 10 is a structural schematic view of the second folding unit in the utility model;

[0034] Figure 11 is a structural schematic view of the third folding unit in the utility model;

[0035] Figure 12 is one of the structural schematic views of the third connecting rod in the utility model;

[0036] Figure 13 is the structural schematic diagram two of the third connecting rod in the utility model.

[0037] The meaning of the reference numerals in the figure is as follows: 1-side frame; 11-first support rod; 12-second support rod; 13-third support rod; 2-supporting leg; 21-first supporting leg; 22-second supporting leg; 23-limiting sleeve; 24-positioning rod;

[0038] 3-supporting cloth; 4-transmission connecting rod; 5-handrail rod; 51-adjusting groove; 52-connecting groove; 6-folding unit; 61-first folding unit; 62-second folding unit; 63-third folding unit; 611-pull handle part; 612-connecting rod part; 613-hinge seat; 614-hinge groove; 615-limiting wall; 616-first connecting rod;

[0039] 617-pull rod; 621-second connecting rod; 622-rotating seat; 631-third connecting rod; 632-limiting protrusion; 633-hinge protrusion; 634-hinge hole; 7-sleeve. DETAILED DESCRIPTION

[0040] The utility model will be further described in conjunction with the specific embodiments and the accompanying drawings:

[0041] Referring to Figures 1 to 13 The supporting cloth 3 is connected with the first support rod 11, the second support rod 12 and the third support rod 13 on the two groups of side frames 1 in sequence, so as to form the backrest, the seat frame and the leg support of the folding chair. The relative folding of the first support rod 11, the second support rod 12 and the third support rod 13 can make the folding chair fold in the length direction. The folding unit 6 is arranged between the two groups of side frames 1. The folding unit 6 includes the first folding unit 61, the second folding unit 62 and the third folding unit 63. The first folding unit 61, the second folding unit 62 and the third folding unit 63 can control the backrest, the seat frame and the leg support to fold in the width direction of the folding chair respectively.

[0042] The folding chair can be folded along the width direction by controlling the two groups of side frames 1 to unfold or fold through the folding unit 6, and the folding chair can be folded along the length direction due to the first support rod 11, the second support rod 12 and the third support rod 13 being sequentially rotationally connected, so that the folding chair can be fully folded, the volume of the folding chair after being folded is reduced, the storage and transportation of the folding chair are facilitated, and the backrest, the seat frame and the leg support can be stably unfolded along the width direction of the folding chair due to the first folding unit 61, the second folding unit 62 and the third folding unit 63 being capable of controlling the backrest, the seat frame and the leg support to be folded along the width direction of the folding chair, thereby avoiding the bending or even the folding of the side frame 1 during use.

[0043] The first support rod 11 is rotationally provided with the handrail rod 5, the handrail rod 5 is arranged to improve the comfort of the folding chair, the handrail rod 5 is provided with a plurality of adjusting grooves 51, the supporting leg 2 is provided with a positioning rod 24 matched with the adjusting grooves 51, the positioning rod 24 is matched with different adjusting grooves 51 to control the inclination angle of the first support rod 11 and the second support rod 12, and the plurality of adjusting grooves 51 and the positioning rod 24 are arranged to facilitate the folding chair to keep a plurality of unfolded states, thereby facilitating the flexible use of the user.

[0044] In the embodiment, the handrail rod 5 is further provided with a connecting groove 52 for connecting the adjusting grooves 51, and the positioning rod 24 can be switched into different adjusting grooves 51 through the connecting groove 52.

[0045] The first folding unit 61 comprises a pull rod 617 and a first connecting rod 616 rotationally connected with the first support rod 11 of the two groups of side frames 1, respectively, the pull rod 617 is connected with the two groups of first connecting rods 616, respectively, the pull rod 617 is provided with a handle part 611, the handle part 611 can pull the first connecting rod 616 to rotate relative to the first support rod 11, so as to control the two groups of side frames 1 to move away or close to each other, and the handle 611 and the first connecting rod 616 are arranged to facilitate the user to control the two groups of side frames 1 to move away or close to each other, thereby facilitating the use of the user.

[0046] The first folding unit 61 comprises a pull rod 617 and a first connecting rod 616 rotationally connected with the first support rod 11 of the two groups of side frames 1, respectively, the pull rod 617 is connected with the two groups of first connecting rods 616, respectively, and can pull the first connecting rod 616 to rotate relative to the first support rod 11, so as to control the two groups of side frames 1 to move away or close to each other, the second folding unit 62 is arranged to facilitate the stable unfolding of the two groups of first support rods 11, the structure of the pull rod 617 and the first connecting rod 616 is simple, the folding and stable unfolding of the two groups of side frames 1 are facilitated, and the pull rod 617 is arranged to facilitate the user to control the rotation of the first connecting rod 616 and to move away or close to the two groups of side frames 1, thereby facilitating the use and control of the user.

[0047] The pull rod 617 described in the present invention includes a connecting rod portion 612 connected to the handle portion 611, and a hinge groove 614 is provided on the connecting rod portion 612. One end of the first connecting rod 616 is rotatably set in the hinge groove 614, and a limiting wall 615 is provided in the hinge groove 614; the two groups of first connecting rods 616 are controlled to expand relative to each other, so that the two first connecting rods 616 are abutted against the limiting wall 615, and the first connecting rods 616 on the two groups of first support rods 11 are relatively set. The setting of the hinge groove 614 and the limiting wall 615 facilitates the stable expansion of the first connecting rod 616 and the pull rod 617, avoids accidental rotation of the first connecting rod 616 and the pull rod 617 during use, and is convenient for users to use.

[0048] In this embodiment, two connecting rod portions 612 are arranged at intervals on the handle portion 611, and at least two first connecting rods 616 are arranged on the first support rod 11. A hinge seat 613 corresponding to each first connecting rod 616 is arranged between the connecting rod portions 612, and a hinge groove 614 is arranged on the hinge seat 613. The first connecting rod 616 is rotatably connected to the hinge seat 613 respectively. The arrangement of the two connecting portions facilitates the stable installation of the hinge seat 613, and the multiple first connecting rods 616 on the first support rod 11 facilitate the first folding unit 61 to stably support the two groups of first support rods 11, thereby avoiding the first connecting rod 616 from being bent and damaged due to excessive force. Preferably, the handle portion 611 is connected to the two connecting rod portions 612 to form an inverted U-shaped structure.

[0049] The second support rods 12 on the two groups of side frames 1 are both provided with support legs 2, and the second folding unit 62 includes two second connecting rods 621 that are respectively rotatably connected to the second support rods 12 on both sides, and the two second connecting rods 621 are hinged in an X shape, and rotating seats 622 are respectively rotatably provided at both ends of the second connecting rod 621. The rotating seats 622 on the second connecting rod 621 are respectively rotatably connected to the second support rod 12 on the side frame 1 and the support leg 2 on the other side frame 1. The two second connecting rods 621 and the rotating seats 622 hinged in an X shape have a simple structure and are convenient for production and processing. Since the second folding unit 62 is connected to the support leg 2, it is convenient for the support leg 2 to stably support the second support rod 12, and the setting of the rotating seat 622 facilitates the second connecting rod 621 to rotate relative to the second support rod 12 together with the support leg 2, which is convenient for the user to control the folding or unfolding of the two groups of second support rods 12.

[0050] The third folding unit 63 described in the present invention includes a third connecting rod 631 rotatably connected to the third support rod 13 on the two groups of side frames 1 respectively. The two groups of third connecting rods 631 are rotatably connected, and the two groups of third connecting rods 631 are provided with a limiting protrusion 632. The two groups of third connecting rods 631 are controlled to unfold relative to each other so that the limiting protrusions 632 on the two third connecting rods 631 cooperate with each other, so that the two groups of third connecting rods 631 can be stably unfolded. The two groups of rotatably connected third connecting rods 631 have a simple structure and are convenient for production and processing. The setting of the limiting protrusion is conducive to the stable unfolding of the third folding unit 63, thereby avoiding accidental folding of the two groups of third connecting rods 631 during use.

[0051] In this embodiment, the two third connecting rods 631 are respectively provided with a hinge protrusion 633 and a hinge hole 634. The hinge protrusion 633 and the hinge hole 634 cooperate to enable the two third connecting rods 631 to be rotatably connected.

[0052] A transmission link 4 is provided between the first support rod 11 and the third support rod 13. The transmission link 4 is rotatably connected to the first support rod 11 and the third support rod 13 respectively. The transmission link 4 can drive the backrest and the bracket to rotate synchronously with the seat frame. The setting of the transmission link 4 facilitates the synchronous movement of the first support rod 11 and the third support rod 13, which facilitates the rapid folding of the folding chair.

[0053] The support leg 2 includes a first support leg 21 and a second support leg 22 that are rotatably connected. The first support leg 21 is rotatably connected to the second support rod 12. A sliding sleeve 7 is rotatably provided on the second support rod 12. The second support leg 22 is slidably connected to the sliding sleeve 7. The rotatably connected first support leg 21 and second support leg 22 facilitate the folding and storage of the support legs 2, so that the folding chair can be folded more fully, the volume of the folding chair after folding is reduced, and the storage and transportation of the folding chair is convenient. The first support leg 21, the second support leg 22, the second support rod 12 and the sliding sleeve 7 form a crank slider mechanism, which facilitates the flexible unfolding and folding of the folding chair. In this embodiment, the armrest rod 5, the first support leg 21, the second support rod 12 and the first support rod 11 form a four-bar mechanism.

[0054] In the present invention, a limiting sleeve 23 is fixedly provided on the second support rod 12. The limiting sleeve 23 can abut against the sliding sleeve 7 and limit the movement range of the sliding sleeve 7 on the second support rod 12. The setting of the limiting sleeve 23 facilitates limiting the movement range of the sliding sleeve 7, is beneficial to the stable deployment of the first support leg 21 and the second support leg 22, and is convenient for users to use.

[0055] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A folding chair comprising a support frame and support legs (2) for supporting the support frame, wherein a support cloth (3) is provided on the support frame, and wherein: The support frame comprises two groups of side frames (1) arranged at intervals, the side frames (1) comprising a first support rod (11), a second support rod (12) and a third support rod (13) which are rotatably connected in sequence, the support cloth (3) is connected in sequence to the first support rod (11), the second support rod (12) and the third support rod (13) on the two groups of side frames, thereby forming a backrest, a seat frame and a leg support of the folding chair, and the folding chair can be folded in the length direction by controlling the relative folding of the first support rod (11), the second support rod (12) and the third support rod (13); A folding unit (6) is provided between the two sets of side frames (1), and the folding unit (6) includes a first folding unit (61), a second folding unit (62), and a third folding unit (63). The first folding unit (61), the second folding unit (62), and the third folding unit (63) can respectively control the backrest, the seat frame, and the leg support to fold along the width direction of the folding chair; The first folding unit (61) includes a pull rod (617) and a first connecting rod (616) rotatably connected to the first support rods (11) on the two sets of side frames (1). The pull rod (617) is connected to the two sets of first connecting rods (616) respectively. A handle portion (611) is provided on the pull rod (617). The handle portion (611) can pull the first connecting rod (616) and the first support rod (11) to rotate relative to each other, thereby controlling the two sets of side frames (1) to move away from or closer to each other.

2. A folding chair according to claim 1, characterized in that: The pull rod (617) includes a connecting rod portion (612) connected to the handle portion (611), a hinge groove (614) is provided on the connecting rod portion (612), one end of the first connecting rod (616) is rotatably arranged in the hinge groove (614), and a limiting wall (615) is provided in the hinge groove (614); the two groups of first connecting rods (616) are controlled to be relatively unfolded, so that the two first connecting rods (616) are abutted against the limiting wall (615), and the first connecting rods (616) on the two groups of first support rods (11) are relatively arranged.

3. A folding chair according to claim 2, characterized in that: Two connecting rod portions (612) are arranged at intervals on the handle portion (611), at least two first connecting rods (616) are arranged on the first support rod (11), and hinge seats (613) corresponding to the respective first connecting rods (616) are arranged between the connecting rod portions (612), and hinge grooves (614) are arranged on the hinge seats (613), and the first connecting rods (616) are respectively rotatably connected to the hinge seats (613).

4. The folding chair according to claim 1, characterized in that: The second support rods (12) on the two groups of side frames (1) are both provided with support legs (2); the second folding unit (62) comprises two second connecting rods (621) rotatably connected to the second support rods (12) on both sides, the two second connecting rods (621) are hinged in an X shape, and rotating seats (622) are rotatably provided at both ends of the second connecting rod (621); the rotating seats (622) on the second connecting rod (621) are respectively rotatably connected to the second support rod (12) on the side frame (1) and the support legs (2) on the other side frame (1).

5. The folding chair according to claim 1, characterized in that: The third folding unit (63) comprises a third connecting rod (631) rotatably connected to the third support rods (13) on the two sets of side frames (1), the two sets of third connecting rods (631) are rotatably connected, and both sets of third connecting rods (631) are provided with a limiting convex edge (632); the two sets of third connecting rods (631) are controlled to be relatively unfolded, so that the limiting convex edges (632) on the two third connecting rods (631) cooperate with each other, thereby stably unfolding the two sets of third connecting rods (631).

6. The folding chair according to claim 1, characterized in that: A transmission link (4) is provided between the first support rod (11) and the third support rod (13), and the transmission link (4) is rotatably connected to the first support rod (11) and the third support rod (13) respectively. The transmission link (4) can drive the support frame and the bracket to rotate synchronously with the seat frame.

7. The folding chair according to claim 1, characterized in that: The support leg (2) comprises a first support leg (21) and a second support leg (22) which are rotatably connected. The first support leg (21) is rotatably connected to the second support rod (12). A sliding sleeve (7) is rotatably provided on the second support rod (12). The second support leg (22) is slidably connected to the sliding sleeve (7).

8. The folding chair according to claim 7, characterized in that: A limiting sleeve (23) is fixedly provided on the second support rod (12), and the limiting sleeve (23) can abut against the sliding sleeve (7) and limit the movement range of the sliding sleeve (7) on the second support rod (12).

9. The folding chair according to claim 1, characterized in that: A handrail (5) is rotatably provided on the first support rod (11), and a plurality of adjustment slots (51) are provided on the handrail (5). A positioning rod (24) adapted to the adjustment slots (51) is provided on the support leg (2), and the positioning rod (24) is controlled to cooperate with different adjustment slots (51) so as to adjust the inclination angles of the first support rod (11) and the second support rod (12).

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