Folding structure and chair

Abstract

The utility model provides a folding structure and a chair, and particularly relates to a folding structure which can be stably unfolded and conveniently folded by optimizing a connecting rod and hinge design. The folding tent comprises the first supporting leg structure, the second supporting leg structure, the first supporting pipe, the second supporting pipe and the connecting rod assembly, the rapid locking and unlocking functions are achieved through the design of the plug pin and the seesaw, and meanwhile the horizontal stability in the unfolding state is ensured through the supporting part. When the cloth is applied to a chair, the supporting armrests and the supporting rods can be adjusted at multiple angles, the cloth installation mode is firm and reliable, and comfortable use experience is provided. The folding structure can effectively solve the problems that in an existing folding structure, supporting legs are large in external expansion angle, inconvenient to operate and insufficient in stability, convenience and practicability are achieved, and the space utilization rate and the user experience feeling are remarkably improved.

Description

Technical Field

[0001] This utility model relates to a folding structure and a chair. Background Technology

[0002] With the widespread application of folding structures in daily life, folding chairs have gradually become common furniture used in various scenarios due to their ease of storage and transportation. Existing folding chairs come in a wide variety of types and structural designs. One common design uses a metal frame as the support, combined with Oxford cloth or other soft fabrics as the seat cushion. This design allows the soft fabric to naturally fold up with the frame, thus achieving the overall folding function of the chair. However, existing folding chair designs still have some significant problems. For example, some folding chairs use guide sleeves on the two side support legs for height adjustment to achieve the unfolding function. This structure causes the two support legs to form a large outward splay when unfolded, which not only complicates the stress distribution of the overall structure but also significantly increases the space occupied. Furthermore, during the folding process, small buttons often require considerable pressing force to complete the folding operation, which is not user-friendly for female or child users, easily causing unnecessary pain and thus reducing the user experience. Summary of the Invention

[0003] This utility model discloses a folding structure and a chair, which aims to solve the problems mentioned above.

[0004] The present invention adopts the following solution:

[0005] A folding structure includes a first support leg structure and a second support leg structure disposed on both sides of the folding structure, and also includes a first support tube and a second support tube, wherein: the upper ends of the front and rear sides of the first support leg structure are hinged to one end of the first support tube, and the upper ends of the front and rear sides of the second support leg structure are hinged to one end of the second support tube; the middle part of the first support tube is hinged to the middle part of the second support tube; the other end of the first support tube is hinged to one end of the first connecting rod, and the other end of the first connecting rod is hinged to the middle part of the second support leg structure; the other end of the second support tube is hinged to one end of the second connecting rod, and the other end of the second connecting rod is hinged to the middle part of the first support leg structure.

[0006] In this embodiment of the present invention, the first support tube is provided with a first insertion hole, and the second support tube is provided with a second insertion hole; when the folding structure is unfolded, the first insertion hole is configured to correspond to the second insertion hole, so that the first insertion hole and the second insertion hole are provided with a pin.

[0007] In this embodiment of the utility model, a rocker is also included. The rocker is rotatably mounted on the second support tube at its center. The rocker is configured to rotate back and forth relative to the second support tube. A pin is provided at one end of the rocker located inside the folding structure. An elastic element is provided between the center of the rocker and the second support tube. The elastic element is configured to drive the pin to be inserted into the first insertion hole.

[0008] In this embodiment of the present invention, the pin is disposed in the first insertion hole; a pressing part is disposed on the other side of the rocker, and the pressing part can drive the pin to be withdrawn from the first insertion hole so as to facilitate the folding of the folding structure.

[0009] In this embodiment of the present invention, one end of the first connecting rod and the second connecting rod are both provided with a support portion. When the folding structure is unfolded, the support portion can abut against the lower end face of the first support tube and the second support tube to limit the continued rotation between the first support tube and the second support tube.

[0010] In this embodiment of the utility model, when the supporting part abuts against the lower end face of the first support tube and the second support tube, the first support tube and the second support tube can be in a horizontal position.

[0011] This utility model also discloses another technical solution:

[0012] A chair comprising the aforementioned folding structure.

[0013] In this embodiment of the present invention, a support handrail is provided above the first support foot structure and the second support foot structure, and the lower part of the support handrail is configured to be rotatably connected to the first support foot structure and the second support foot structure so that the support handrail can be flipped up and down.

[0014] In this embodiment of the present invention, a support rod is provided on the rear side of the support armrest, and the support rod is configured to be rotatably connected to the support armrest so that the support rod can be flipped back and forth.

[0015] In this embodiment of the utility model, a sleeve is also included, which is disposed on the first support foot structure and the second support foot structure, and the sleeve can be located above the first support tube and the second support tube; a fabric for sitting is disposed between the two sleeves, and a fabric for backrest is disposed between the two support rods.

[0016] The technical solution of this utility model achieves its technical effect through the following specific implementation details: S1 The middle hinge point of the first and second support tubes serves as the core connection point of the entire folding structure, and its design ensures the synchronicity of the structure during unfolding and folding; S2 The cooperation design of the pin and rocker utilizes the elasticity characteristics of the elastic element to realize the automatic insertion and manual withdrawal function of the pin, simplifying the user's operation steps; S3 The support part on the first and second connecting rods limits the maximum rotation angle between the support tubes by abutting against the lower end face of the support tube, ensuring horizontal stability in the unfolded state; S4 The support armrests and support rods of the chair realize multi-angle adjustment function through a rotating connection to meet the needs of different users.

[0017] The technical solution of this utility model brings significant technical effects: First, the hinged design of the first support tube, the second support tube, and the connecting rod ensures good stability of the folding structure in the unfolded state; second, the design of the pin and the rocker allows the user to quickly fold the structure by simply pressing the rocker, making the operation simple and effortless; third, after folding, the two support legs are close to each other, significantly reducing the space occupied; finally, the chair's armrests and support rods can be flipped, and the fabric design provides a comfortable sitting and backrest experience, improving the overall convenience and comfort of use.

[0018] In summary, this utility model solves the technical problems existing in the prior art by optimizing the design of the folding structure, and has made significant progress in terms of stability, ease of operation and space utilization. At the same time, by applying it to the design of chairs, its practical value is further expanded. Attached Figure Description

[0019] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model in its unfolded state.

[0021] Figure 2 This is a perspective view of the utility model in its unfolded state.

[0022] Figure 3 This is a partial view of the utility model in its unfolded state.

[0023] Figure 4 This is a schematic diagram of the folded state of this utility model. Figure 1 .

[0024] Figure 5 This is a schematic diagram of the folded state of this utility model. Figure 2 .

[0025] Figure 6 This is a schematic diagram of the utility model after it has been folded. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments.

[0027] Referring to the accompanying drawings, this utility model provides a folding structure and a chair. In practical applications, this folding structure achieves stability in the unfolded state and convenience in the folded state through the coordinated operation of components such as the first support leg structure 1, the second support leg structure 2, the first support tube 3, the second support tube 4, connecting rods, and pins. The specific embodiments will be described in detail below with reference to the component numbers in the accompanying drawings.

[0028] The core of this folding structure lies in the hinge point at the middle of the first support tube 3 and the second support tube 4. This design ensures the synchronicity of the entire structure during unfolding and folding. In use, when unfolded, the support leg structure can be set vertically; when folding, it first flares outward and then folds. The upper ends of the front and rear sides of the first support leg structure 1 are hinged to one end of the first support tube 3, and the upper ends of the front and rear sides of the second support leg structure 2 are hinged to one end of the second support tube 4. The hinged structure can be described as a rotating connection, which can be achieved through a bolt mechanism. This hinged method allows the first support leg structure 1 and the second support leg structure 2 to form a stable support frame when unfolded, and at the same time, they can move closer to each other when folded, significantly reducing the space occupied. The middle of the first support tube 3 and the second support tube 4 are connected by hinge point A. When unfolded, the two support tubes can partially overlap and be set parallel; when folded, the two support tubes rotate along the hinge point, causing the first support leg structure 1 and the second support leg structure 2 to retract inward, thereby achieving a compact folding form.

[0029] To further enhance stability in the unfolded state, a first insertion hole 7 is provided on the first support tube 3 and a second insertion hole 8 is provided on the second support tube 4 in this embodiment. When the folding structure is in the unfolded state, the first insertion hole 7 and the second insertion hole 8 correspond to each other, can be on the same axis, and are fixed by the pin 9, thus maintaining the entire folding structure in the unfolded state. The design of the pin 9 not only prevents the structure from folding accidentally, but also realizes the functions of automatic insertion and manual withdrawal through the cooperation of the rocker 10 and the elastic element 11. In the figure, the middle part of the rocker 10 is rotatably mounted on the second support tube 4, with the pin 9 provided on one end of its inner side and the pressing part 17 provided on the other side. The pressing part can have a large area structure, and the rocker structure is more labor-saving than a button. The elastic element 11 is located between the middle of the rocker arm 10 and the second support tube 4. When the folding structure is unfolded, the elastic element 11 drives the pin 9 to automatically insert into the first socket 7, completing the locking operation. When it needs to be folded, the user only needs to press the pressing part 17 of the rocker arm 10 to drive the pin 9 out of the first socket 7, thereby releasing the locked state. This design simplifies the user's operation steps and is especially suitable for women or children. The elastic element can adopt a torsion spring structure. Under the action of the elastic element, as long as the two sockets are aligned, the pin will be inserted into the first socket to achieve locking.

[0030] To limit excessive rotation between the first support tube 3 and the second support tube 4 and ensure a horizontal position in the unfolded state, support portions 12 are respectively provided at one end of the first connecting rod 5 and the second connecting rod 6 in this embodiment. When the folding structure is fully unfolded, the support portions 12 abut against the lower end faces of the first support tube 3 and the second support tube 4 to limit further rotation between the support tubes. As shown in the figure, the design of the support portions 12 ensures that the first support tube 3 and the second support tube 4 maintain a horizontal position in the unfolded state, thereby improving the stability of the overall structure. In addition, the abutting action of the support portions 12 can also distribute the force to a certain extent, avoiding structural deformation or damage due to excessive local force.

[0031] This embodiment further applies the above-mentioned folding structure to the design of a chair. A support armrest 13 is positioned above the first support leg structure 1 and the second support leg structure 2. The lower part of the support armrest 13 is rotatably connected to the first support leg structure 1 and the second support leg structure 2, allowing the support armrest 13 to be flipped up and down for folding. A support rod 14 is positioned on the rear side of the support armrest 13, and the support rod 14 is rotatably connected to the support armrest 13, allowing the support rod 14 to be flipped forward and backward, also for folding. In addition, the chair includes sleeves 15, which are positioned on the first support leg structure 1 and the second support leg structure 2, above the first support tube 3 and the second support tube 4. A fabric 16 for sitting is positioned between the two sleeves 15, and a fabric 16 for the backrest is positioned between the two support tubes 14. The fabric 16 is fixed to the support leg structure by the sleeves 15, ensuring that the fabric will not slip or loosen during use.

[0032] In actual operation, the folding structure and the chair operate as follows: S1 When the user needs to unfold the chair, the first support leg structure 1 and the second support leg structure 2 are first pulled outwards. At this time, the first support tube 3 and the second support tube 4 rotate along the central hinge point and gradually unfold until the first insertion hole 7 corresponds to the second insertion hole 8. S2 During the unfolding process, the elastic element 11 drives the pin 9 to automatically insert into the first insertion hole 7, completing the locking operation and ensuring the stability of the structure in the unfolded state. S3 When the user sits down, the fabric 16 provides a comfortable sitting and backrest experience, while the support part 12 limits the maximum rotation angle between the support tubes by abutting against the lower end face of the support tubes, ensuring horizontal stability in the unfolded state. S4 When the user needs to fold the chair, simply press the pressing part 17 of the rocker arm 10 to drive the pin 9 out of the first insertion hole 7, thereby releasing the locking state. Subsequently, the first support leg structure 1 and the second support leg structure 2 are pushed inwards, and the first support tube 3 and the second support tube 4 rotate along the hinge point and gradually close, finally forming a compact folding shape.

[0033] The technical solution of this embodiment solves the technical problems existing in the prior art by optimizing the design of the folding structure, and achieves significant progress in terms of stability, ease of operation, and space utilization. For example, the hinged design of the first support tube 3 and the second support tube 4 ensures the stability of the structure in the unfolded state; the design of the pin 9 and the rocker arm 10 allows the user to quickly fold the structure by simply pressing the rocker arm 10, making the operation simple and effortless; the design of the support part 12 limits the maximum rotation angle between the support tubes, ensuring horizontal stability in the unfolded state; and the multi-angle adjustment function of the support armrest 13 and the support rod 14 meets the needs of different users, improving the overall convenience and comfort of use.

[0034] In summary, this embodiment details the specific implementation of the folding structure and the chair through specific component design and operating principles. By combining the component numbers in the accompanying drawings with the actual application scenarios of the technical solution, this embodiment fully discloses the feasibility of each step, ensuring the completeness and operability of the technical solution.

[0035] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A folding structure, comprising a first support leg structure and a second support leg structure disposed on both sides of the folding structure, characterized in that, It also includes a first support tube and a second support tube, wherein: The upper ends of the front and rear sides of the first support leg structure are hinged to one end of the first support tube, and the upper ends of the front and rear sides of the second support leg structure are hinged to one end of the second support tube. The middle part of the first support tube is hinged to the middle part of the second support tube; The other end of the first support tube is hinged to one end of the first connecting rod, and the other end of the first connecting rod is hinged to the middle of the second support foot structure; the other end of the second support tube is hinged to one end of the second connecting rod, and the other end of the second connecting rod is hinged to the middle of the first support foot structure.

2. The folding structure according to claim 1, characterized in that, The first support tube is provided with a first insertion hole, and the second support tube is provided with a second insertion hole; when the folding structure is unfolded, the first insertion hole is configured to correspond to the second insertion hole, so that the first insertion hole and the second insertion hole are provided with a pin.

3. The folding structure according to claim 2, characterized in that, It also includes a rocker, the middle of which is rotatably mounted on the second support tube. The rocker is configured to rotate back and forth relative to the second support tube. A pin is provided at one end of the rocker located inside the folding structure. An elastic element is provided between the middle of the rocker and the second support tube. The elastic element is configured to drive the pin to be inserted into the first insertion hole.

4. A folding structure according to claim 3, characterized in that, The pin is disposed in the first socket; a pressing part is disposed on the other side of the rocker, and the pressing part can drive the pin to be withdrawn from the first socket to facilitate the folding of the folding structure.

5. A folding structure according to any one of claims 1-4, characterized in that, One end of the first link and the second link are both provided with a support portion. When the folding structure is unfolded, the support portion can abut against the lower end face of the first support tube and the second support tube to limit the continued rotation between the first support tube and the second support tube.

6. A folding structure according to claim 5, characterized in that, When the support part abuts against the lower end face of the first support tube and the second support tube, the first support tube and the second support tube can be in a horizontal position.

7. A chair, characterized in that, Includes a folding structure as described in any one of claims 1-6.

8. A chair according to claim 7, characterized in that, A support handrail is provided above the first support leg structure and the second support leg structure. The lower part of the support handrail is configured to be rotatably connected to the first support leg structure and the second support leg structure so that the support handrail can be flipped up and down.

9. A chair according to claim 8, characterized in that, A support rod is provided on the rear side of the support handrail, and the support rod is configured to be rotatably connected to the support handrail so that the support rod can be flipped back and forth.

10. A chair according to claim 9, characterized in that, It also includes a sleeve, which is disposed on the first support leg structure and the second support leg structure, and the sleeve can be located above the first support tube and the second support tube; a fabric for sitting is disposed between the two sleeves, and a fabric for backrest is disposed between the two support rods.

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