CN219396735U

CN219396735U - Folding chair

Info

Publication number: CN219396735U
Application number: CN202223153456.0U
Authority: CN
Inventors: 朱晓辉; 夏勇
Original assignee: Zhejiang Sunshine Leisure Products Co ltd
Current assignee: Zhejiang Sunshine Leisure Products Co ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-07-25
Anticipated expiration: 2032-11-25

Abstract

The utility model discloses a folding chair, which comprises a left cross connecting rod, a right cross connecting rod, two back pipes, two handrail pipes, two linkage pieces, two connecting pieces, a boss, two transverse hinge holes, two lower ends of the two handrail pipes, and a left cross connecting rod or a right cross connecting rod, wherein the left cross connecting rod and the right cross connecting rod are oppositely arranged, the two back pipes are oppositely arranged, the two handrail pipes are oppositely arranged, the two linkage pieces are provided with a vertical sliding hole and are respectively sleeved on the two back pipes in a sliding mode through the sliding holes, the boss is provided with the transverse hinge holes, two ends of the transverse hinge holes penetrate through the sliding holes, and the lower ends of the two handrail pipes are respectively hinged with the bosses of the linkage pieces on the same side, and the middle parts of the two handrail pipes are respectively hinged with the left cross connecting rod or the right cross connecting rod on the same side. The back support tube and the armrest tube of the folding chair are both connected to the back tube in a sliding way through the linkage piece, so that the back support tube, the armrest tube and the folding chair frame can be synchronously unfolded and folded, the structure of the folding chair is simplified, and the volume of the folded chair is reduced.

Description

Folding chair

Technical Field

The utility model relates to the field of folding chairs, in particular to a folding chair.

Background

In order to make the folding chair sit comfortably, armrests and backrests are arranged on the folding chair, but the folding chair is complicated in structure and has a plurality of defects. For example, the folding chair disclosed in KR100442760B1 has the problems that the structure is complex, parts are more, the back support and the armrests cannot be folded and unfolded synchronously with the chair frame, the folding chair back support and the armrests disclosed in CN203328305U can be folded and unfolded synchronously with the chair frame, but still have the problems that the parts are more and the structure is complex, and the center of gravity of the folded chair is unstable and cannot stand.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a folding chair which mainly solves the problems of more accessories and complex structure caused by the arrangement of armrests and backs of the existing folding chair.

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

the utility model provides a folding chair, including left cross connecting rod and right cross connecting rod that set up relatively, two backpipes that set up relatively and two handrail pipes that set up relatively, still include two linkage pieces, the linkage piece has a vertical slide hole, two linkage pieces pass through the slide hole and slide the cover respectively and establish on two backpipes, one side end of linkage piece is equipped with the boss, be equipped with a both ends and run through and with the horizontal hinge hole of slide hole intercommunication on the boss, the lower extreme of two handrail pipes is articulated with the boss of the linkage piece of homonymy respectively and is connected, the middle part of two handrail pipes is articulated with left cross connecting rod or right cross connecting rod of homonymy respectively.

Preferably, the linkage member is provided with a transverse mounting hole with two ends penetrating through, the mounting hole is communicated with the sliding hole and is opposite to the hinge hole, and the side wall of the sliding hole is provided with an avoidance groove for preventing the part from protruding to the sliding hole.

Preferably, each handrail tube comprises a straight line section and a handrail section formed by bending the upper end of the straight line section forwards, and the handrail section is inclined downwards from front to back.

Preferably, the handrail tube is a flat tube.

Preferably, the handrail tube on the left side is arranged on the left side of the back tube and the left cross connecting rod on the same side, and the handrail tube on the right side is arranged on the right side of the back tube and the right cross connecting rod on the same side.

Preferably, the linkage member hinged with the armrest pipe is defined as a first linkage member, the folding chair further comprises two opposite back support pipes and two second linkage members, the lower ends of the two back support pipes are respectively hinged with bosses of the two second linkage members, the two second linkage members are respectively sleeved on the two back support pipes and are higher than the first linkage member, and the middle part of each back support pipe is hinged with a left cross connecting rod or a right cross connecting rod on the same side.

Preferably, the back support tube positioned on the right side is arranged on the left side of the back tube positioned on the same side and the right cross connecting rod, and the back support tube positioned on the left side is arranged on the right side of the back tube positioned on the same side and the left cross connecting rod.

Preferably, the first linkage member is riveted to the handrail tube and the second linkage member is riveted to the back tube.

Preferably, the folding chair further comprises a front cross connecting rod and a rear cross connecting rod, wherein the front cross connecting rod, the left cross connecting rod, the rear cross connecting rod and the right cross connecting rod are sequentially hinged to form a chair frame capable of being folded left and right and front and back.

Preferably, the chair frame is covered with a piece of chair cloth, the upper end of the chair cloth is arranged on the two back support tubes, and the lower end of the chair cloth is arranged at the two upper ends of the front cross connecting rod or at the front upper ends of the left cross connecting rod and the front upper ends of the right cross connecting rod.

Compared with the prior art, the folding chair provided by the utility model has the following advantages:

the back support tube and the armrest tube are both connected to the back tube in a sliding way through the linkage piece, so that the back support tube, the armrest tube and the folding chair frame can be synchronously unfolded and folded, the structure of the folding chair is simplified, and the volume of the folded chair is reduced. The linkage piece can be used for the installation of the back support pipe and also can be used for the installation of the armrest pipe, the universality is good, the accessory types of the folding chair are reduced, the linkage piece is connected with the back support pipe or the armrest pipe through rivets, and compared with a common screw locking mode in the prior art, the assembly mode is simpler and faster.

Drawings

FIG. 1 is a schematic structural view of a linkage;

FIG. 2 is a schematic view of another angular configuration of the linkage;

FIG. 3 is a schematic view of a folding chair with armrest tubes in an unfolded state;

FIG. 4 is a schematic view of a half-folded state of the folding chair with armrest tubes;

FIG. 5 is a schematic view of a folding chair with armrest tubes in a folded state;

fig. 6 is a schematic structural view of the unfolded state of the folding chair with the back support tube.

Description of the reference numerals: 1. a linkage member; 2. a sliding hole; 3. a boss; 4. a hinge hole; 5. an avoidance groove; 6. a front cross link; 7. a rear cross link; 8. a left cross connecting rod; 9. a right cross connecting rod; 10. a back tube; 11. a back support tube; 12. a back support section; 13. a front base; 14. a rear base; 15. a support means; 16. a second linkage member; 17. a slider; 18. a connecting piece; 19. a handrail tube; 20. and (5) mounting holes.

Detailed Description

The utility model is further described below with reference to the drawings and examples.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

As shown in fig. 1 to 2, the present embodiment discloses a linkage 1 having a vertical sliding hole 2, and the linkage 1 is slidably sleeved on a chair frame of a folding chair through the sliding hole 2; a boss 3 is arranged at one side end, and a transverse hinging hole 4 with two ends penetrating through and communicated with the sliding hole 2 is arranged on the boss 3; a transverse mounting hole 20 with two ends penetrating is arranged, and the mounting hole 20 is communicated with the sliding hole 2 and is opposite to the hinge hole 4; the side wall of the sliding hole 2 is provided with a avoiding groove 5 which is opposite to the hinge hole 4 and used for preventing the part from protruding to the sliding hole 2.

Fig. 3 to 5 show a folding chair with the above-mentioned linkage 1, which comprises a left cross connecting rod 8 and a right cross connecting rod 9 which are oppositely arranged, two back pipes 10 which are oppositely arranged and two handrail pipes 19 which are oppositely arranged, wherein each back pipe 10 is sleeved with one above-mentioned linkage 1, the lower ends of the two handrail pipes 19 are respectively hinged with a boss 3 of the linkage 1 on the same side, and the middle parts of the two handrail pipes 19 are respectively hinged with the left cross connecting rod 8 or the right cross connecting rod 9 on the same side.

As shown in fig. 3, each handrail tube 19 includes a straight line segment and a handrail segment 15 formed by bending an upper end of the straight line segment forward, and the handrail segment 15 is inclined downward from front to back. Preferably, the handrail tube 19 is a flat tube, and the flat tube has a larger supporting surface than a round tube.

As a preferable mode, the handrail tube 19 on the left side is provided on the left side of the back tube 10 and the left cross link 8 on the same side, and the handrail tube 19 on the right side is provided on the right side of the back tube 10 and the right cross link 9 on the same side. That is, the two armrest pipes 19 are respectively arranged at the two outer sides of the folding chair, so that the folding chair which is completely folded and folded has compact internal space, smaller volume and more stable standing, and is convenient for placing and storage. It will be appreciated that it is also possible to provide the two arm rest tubes 19 inside the chair frame.

As the folding chair mostly adopts the chair cloth as the backrest, the supporting force to the waist and the back of the human body is not as strong as that of the backrest, therefore, the folding chair is preferable, and the back support structure can be added to relieve the discomfort caused by long-time sitting.

Specifically, the linkage 1 hinged to the armrest tube 19 is defined as a first linkage, and fig. 6 shows a folding chair (two armrest tubes 19 and two first linkages are not shown) with the addition of two back rest tubes 11, the folding chair further comprising two opposite back rest tubes 11 and two second linkages 16. The back support tube 11 includes a straight section and a back support section 12. The back support section 12 is an arc section which is formed by bending the upper end of the straight line section forwards and then backwards and is matched with the curve of the waist and back of the human body. The upper end of the back support section 12 is a free end, so that the back support section 12 has certain elasticity, can generate elastic deformation according to the weight and the posture of a user, is more comfortable when in use, and relieves the pressure of the waist and the back.

The lower ends of the two back support pipes 11 are respectively hinged with the bosses 3 of the two second linkage pieces 16, the two second linkage pieces 16 are respectively sleeved on the two back pipes 10 and are higher than the first linkage pieces, and the middle part of each back support pipe 11 is hinged with the left cross connecting rod 8 or the right cross connecting rod 9 on the same side.

The back tube 11 on the right side is arranged on the left side of the same-side back tube 10 and the right cross connecting rod 9, and the back tube 11 on the left side is arranged on the right side of the same-side back tube 10 and the left cross connecting rod 8. The two back support pipes 11 are staggered with the two handrail pipes 19, so that mutual interference during folding is avoided.

Specifically, the first linkage member is riveted to the armrest tube 19, and the second linkage member 16 is riveted to the back tube 10. In other embodiments, the armrest tube 19 and the back support tube 10 may be hinged to the corresponding linkage via a pivot, a bolt, or the like.

The folding chair can be folded back and forth, and in order to further reduce the volume during storage, the folding chair is preferably designed to have a structure capable of being folded back and forth and left and right. Specifically, as shown in fig. 3 and 6, the folding chair further includes a front cross link 6 and a rear cross link 7, and the front cross link 6, the left cross link 8, the rear cross link 7 and the right cross link 9 each include two tubes that are hinged to each other to form an X shape, and the front cross link 6, the left cross link 8, the rear cross link 7 and the right cross link 9 are hinged to each other in sequence to form a chair frame that can be folded left and right, front and rear.

The front upper ends of the left cross link 8 and the right cross link 9 are each hinged to the two upper ends of the front cross link 6 by a connecting piece 18. The two back pipes 10 are respectively sleeved with a sliding piece 17, the two upper ends of the rear cross connecting rod 7 are respectively hinged with the two sliding pieces 17, and the rear upper ends of the left cross connecting rod 8 and the right cross connecting rod 9 are respectively hinged with the sliding pieces 17 on the same side.

The back support folding chair is provided with two front bases 13 and two rear bases 14, the two rear bases 14 are respectively arranged at the lower ends of the two back pipes 10, the two lower ends of the rear cross connecting rod 7 are respectively hinged with the two rear bases 14, the two lower ends of the front cross connecting rod 6 are respectively hinged with the two front bases 13, the two lower ends of the left cross connecting rod 8 are respectively hinged with the front bases 13 and the rear bases 14 on the same side, and the two lower ends of the right cross connecting rod 9 are respectively hinged with the front bases 13 and the rear bases 14 on the same side.

The chair frame is covered with a piece of chair cloth, the upper end of the chair cloth is arranged on the two back support pipes 11, and the lower end of the chair cloth is arranged at the two upper ends of the front cross connecting rod 6 or at the front upper end of the left cross connecting rod 8 and the front upper end of the right cross connecting rod 9.

When the chair frame is folded, the angles of the left cross connecting rod 8 and the right cross connecting rod 9 are reduced, the sliding piece 17 is driven to slide upwards on the back pipe 10, the left cross connecting rod 8 and the right cross connecting rod 9 drive the two back supporting pipes 11 and the two handrail pipes 19 to be close to the back pipe 10, the linkage piece 1 slides upwards on the back pipe 10, and the whole chair frame is folded inwards.

When the chair frame is unfolded, the angles of the left cross connecting rod 8 and the right cross connecting rod 9 become larger, the sliding piece 17 is driven to slide downwards on the back pipe 10, the left cross connecting rod 8 and the right cross connecting rod 9 drive the two back supporting pipes 11 and the two handrail pipes 19 to unfold relative to the back pipe 10, the linkage piece 1 slides downwards on the back pipe 10, and the whole chair frame is unfolded outwards.

The embodiments are merely illustrative of the technical solution of the present utility model, and not limiting thereof; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and therefore all other embodiments obtained by those skilled in the art without making creative efforts are intended to fall within the protection scope of the present utility model.

Claims

1. A folding chair, characterized in that: including left cross connecting rod and right cross connecting rod that set up relatively, two backpipes that set up relatively and two handrail pipes that set up relatively, still include two linkage pieces, the linkage piece has a vertical slide hole, two linkage pieces pass through the slide hole and slide the cover respectively and establish on two backpipes, one side end of linkage piece is equipped with the boss, be equipped with a both ends on the boss and run through and with the horizontal hinge hole of slide hole intercommunication, the lower extreme of two handrail pipes is articulated with the boss of linkage piece of homonymy respectively and is connected, the middle part of two handrail pipes is articulated with left cross connecting rod or right cross connecting rod of homonymy respectively and is connected.

2. The folding chair as in claim 1, wherein: the linkage piece is provided with a transverse mounting hole with two ends penetrating through, the mounting hole is communicated with the sliding hole and is opposite to the hinge hole, and a avoiding groove for preventing the part from protruding to the sliding hole is formed in the side wall of the sliding hole opposite to the hinge hole.

3. The folding chair as in claim 1, wherein: each handrail tube comprises a straight line section and a handrail section formed by bending the upper end of the straight line section forwards, and the handrail section is inclined downwards from front to back.

4. The folding chair as in claim 1, wherein: the handrail tube is a flat tube.

5. The folding chair as in claim 1, wherein: the handrail pipe on the left side is arranged on the left side of the back pipe and the left cross connecting rod on the same side, and the handrail pipe on the right side is arranged on the right side of the back pipe and the right cross connecting rod on the same side.

6. The folding chair as in claim 1, wherein: the linkage piece hinged with the armrest pipe is defined as a first linkage piece, the folding chair further comprises two opposite back support pipes and two second linkage pieces, the lower ends of the two back support pipes are respectively hinged with bosses of the two second linkage pieces, the two second linkage pieces are respectively sleeved on the two back support pipes and are higher than the first linkage piece, and the middle part of each back support pipe is hinged with a left cross connecting rod or a right cross connecting rod on the same side.

7. The folding chair as in claim 6, wherein: the back support pipes positioned on the right side are arranged on the left sides of the back pipes on the same side and the right cross connecting rods, and the back support pipes positioned on the left side are arranged on the right sides of the back pipes on the same side and the left cross connecting rods.

8. The folding chair as in claim 6, wherein: the first linkage piece is riveted with the armrest pipe, and the second linkage piece is riveted with the back support pipe.

9. A folding chair as claimed in any one of claims 1 to 8, wherein: the folding chair further comprises a front cross connecting rod and a rear cross connecting rod, wherein the front cross connecting rod, the left cross connecting rod, the rear cross connecting rod and the right cross connecting rod are sequentially hinged to form a chair frame capable of being folded left and right and front and back.

10. The folding chair as in claim 9, wherein: the chair frame is covered with a piece of chair cloth, the upper ends of the chair cloth are arranged on the two back support tubes, and the lower ends of the chair cloth are arranged at the two upper ends of the front cross connecting rod or at the front upper ends of the left cross connecting rod and the front upper ends of the right cross connecting rod.