Folding chair structure

Abstract

The utility model discloses a folding chair structure which comprises a support component and a backrest component, the backrest component is arranged on one side of the support component and comprises a backrest upper pipe and a backrest lower pipe which can be mutually sleeved, and the backrest upper pipe and the backrest lower pipe are locked through a lock structure; the lock structure comprises a trigger part arranged at the bottom end of the backrest upper pipe; the unlocking sliding block is arranged outside the backrest lower pipe in a sleeved mode, and when the support assembly is folded, the unlocking sliding block moves upwards along the backrest lower pipe to abut against the trigger component, so that the lock structure for locking the backrest upper pipe and the backrest lower pipe is opened. Therefore, position limitation of the backrest lower pipe and the backrest upper pipe is unlocked, the backrest upper pipe can retract into the backrest lower pipe to be stored, the folding size is reduced, the occupied space is reduced, meanwhile, the folding support assembly can synchronously fold the backrest pipe, and complex unlocking operation is converted into natural folding action conforming to human engineering.

Description

Technical Field

[0001] This utility model relates to the field of folding chair technology, and in particular to a folding chair structure. Background Technology

[0002] Folding chairs are widely used in outdoor camping and leisure, conference rooms that require flexible seating arrangements, and small apartments due to their small footprint and portability. Currently, there are many folding chairs on the market, but they all have drawbacks. For example, folding chairs with short backs cannot allow people to lean back more comfortably, while folding chairs with long backs cannot fold the backrest or require operating multiple locking devices at the same time to fold the backrest.

[0003] For the reasons mentioned above, it is necessary to improve the existing technology. Utility Model Content

[0004] I. Technical problems to be solved

[0005] This utility model addresses the aforementioned deficiencies in the existing technology by proposing a folding chair structure to solve the problems mentioned in the background art.

[0006] II. Technical Solution

[0007] To solve the above technical problems, this utility model provides a folding chair structure, including a support assembly and a backrest assembly. The support assembly can be unfolded and folded so that the folding chair can switch between an unfolded state and a folded state. The backrest assembly is disposed on one side of the support assembly and includes an upper backrest tube and a lower backrest tube that can be nested together. The upper backrest tube and the lower backrest tube are locked together by a locking structure.

[0008] It also includes the locking structure comprising a trigger component disposed at the bottom end of the upper tube of the backrest;

[0009] An unlocking slider is sleeved outside the lower backrest tube. When the support assembly is retracted, the unlocking slider moves upward along the lower backrest tube to press against the triggering component, thereby opening the locking structure that locks the upper backrest tube and the lower backrest tube.

[0010] In the above technical solution, the support assembly includes a cross tube group and a hinge seat, the hinge seat being used to hinge the sides of adjacent cross tube groups together.

[0011] In the above technical solution, the locking structure also includes a pin hole at the top of the lower backrest tube, the triggering component is a spring pin, and the pin hole is used to cooperate with the spring pin to lock the upper backrest tube.

[0012] In the above technical solution, the unlocking slider is provided with a guide surface corresponding to the position of the spring pin.

[0013] In the above technical solution, the cross tube group includes a first support tube and a second support tube, which are arranged crosswise and connected by a connecting pin at the intersection.

[0014] In the above technical solution, the unlocking slider is horizontally positioned directly above the hinge seat, and a third support tube is fixedly provided between the unlocking slider and the hinge seat.

[0015] The above technical solution also includes a seat surface, which is disposed on the support assembly, with one end extending upward to form a backrest. The backrest is disposed on one side of the backrest assembly, and armrests are provided on both sides of the backrest. The top of the support assembly extends upward to form a fixing part for fixing the armrests.

[0016] In the above technical solution, a sliding block is fixedly provided at the bottom end of the lower backrest tube. The sliding block is sleeved on the first support tube and can be moved to any position of the first support tube and locked.

[0017] In the above technical solution, multiple folding chairs are fixedly connected as one unit by a connector.

[0018] In the above technical solution, the upper backrest tube and the lower backrest tube are irregularly shaped tubes.

[0019] III. Beneficial Effects

[0020] Compared with the prior art, the present invention has the following advantages: When the support assembly is retracted, the unlocking slider is driven to slide upward along the lower backrest tube to the unlocking lock structure, thereby unlocking the position restrictions of the lower backrest tube and the upper backrest tube, so that the upper backrest tube can be retracted into the lower backrest tube for storage, thereby reducing the size of the retracted structure and the space occupied. At the same time, the retracting support assembly can retract the backrest tube simultaneously, transforming the complex unlocking operation into a natural folding action that conforms to ergonomics. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 This is a partial structural schematic diagram of the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0024] Figure 4 This is a partial structural schematic diagram of Embodiment 3 of the present invention.

[0025] Figure 5 This is a partial structural schematic diagram of Embodiment 4 of the present invention.

[0026] Figure 6 This is a partial structural schematic diagram of Embodiment 5 of the present invention.

[0027] Figure 7 for Figure 2 A partial enlarged view of the structure in section A.

[0028] Figure 8 This is a partial cross-sectional structural diagram of the present invention.

[0029] In the diagram: 1 is the support assembly, 10 is the cross tube assembly, 11 is the hinge seat, 12 is the third support tube, 13 is the fixing part, 100 is the first support tube, 101 is the second support tube, 102 is the connecting pin, 2 is the backrest assembly, 20 is the upper backrest tube, 21 is the lower backrest tube, 22 is the locking structure, 23 is the sliding block, 220 is the triggering component, 221 is the pin hole, 3 is the unlocking slider, 30 is the guide surface, 4 is the seat surface, 40 is the backrest back surface, 41 is the armrest, and 5 is the connecting piece. Detailed Implementation

[0030] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but should not be used to limit the scope of this utility model.

[0031] Please see Figure 1-8 The present invention provides a folding chair structure, including a support assembly 1 and a backrest assembly 2. The support assembly 1 can be unfolded and folded so that the folding chair can switch between an unfolded state and a folded state. The backrest assembly 2 is disposed on one side of the support assembly 1 and includes an upper backrest tube 20 and a lower backrest tube 21 that can be nested together. The upper backrest tube 20 and the lower backrest tube 21 are locked together by a locking structure 22.

[0032] It also includes the locking structure 22, which includes a triggering component 220 disposed at the bottom end of the upper tube 20 of the backrest;

[0033] Unlock slider 3, which is sleeved on the lower backrest tube 21, moves upward along the lower backrest tube 21 to press against the trigger member 220 when the support assembly 1 is retracted, thereby opening the lock structure 22 that locks the upper backrest tube 20 and the lower backrest tube 21.

[0034] In the above structure, when the folding chair is unfolded, the support assembly unfolds, the unlocking slider slides down along the position of the lower backrest tube, and the upper backrest tube slides up in the lower backrest tube until the locking structure set at the bottom of the upper backrest tube locks the upper backrest tube, thereby restricting the sliding of the upper backrest tube in the lower backrest tube, forming a backrest.

[0035] When the folding chair is folded up, the support assembly retracts, and the unlocking slider slides upward along the lower backrest tube until the unlocking lock structure is unlocked. This allows the upper backrest tube to retract downward along the lower backrest tube until it is completely retracted into the lower backrest tube, thereby reducing the folding size and simplifying the operation steps and difficulty of folding the chair.

[0036] Specifically, the support assembly 1 includes a cross tube group 10 and a hinge seat 11. The hinge seat 11 is used to hinge the sides of adjacent cross tube groups 10 to each other. The cross tube groups are set into four groups and distributed in a square, which makes the folding chair more beautiful and achieves a visually harmonious effect.

[0037] Specifically, the locking structure 22 also includes a pin hole 221 at the top of the lower backrest tube 21. The triggering component 220 is a spring pin. The pin hole 221 is used to cooperate with the spring pin to lock the upper backrest tube 20. Using a spring pin and a pin hole as the locking structure for locking the lower backrest tube and the upper backrest tube, the overall structure is simple, which can effectively reduce costs and facilitate production.

[0038] Specifically, the unlocking slider 3 is provided with a guide surface 30 corresponding to the position of the spring pin. The guide surface can guide the spring pin to ensure that the unlocking device can correctly press the spring pin to make it retract and unlock.

[0039] Specifically, the cross tube assembly 10 includes a first support tube 100 and a second support tube 101. The first support tube 100 and the second support tube 101 are arranged crosswise and connected by a connecting pin 102 at the intersection. By connecting the crosswise first support tube and the second support tube through the connecting pin, the vertical pressure on the folding chair can be converted into lateral tension, thereby improving the single-point load-bearing capacity. At the same time, the cross design can counteract lateral swaying and improve the stability of the folding chair when used on uneven outdoor ground.

[0040] Specifically, the unlocking slider 3 is horizontally positioned directly above the hinge seat 11, and a third support tube 12 is fixedly provided between the unlocking slider 3 and the hinge seat 11. The added third support tube can enhance the load-bearing capacity of the folding chair.

[0041] Specifically, it also includes a seat surface 4, which is disposed on the support assembly 1, with one end extending upward to form a backrest 40. The backrest 40 is disposed on one side of the backrest assembly 2, and armrests 41 are provided on both sides of the backrest 40. The top end of the support assembly 1 extends upward to form a fixing part 13 for fixing the armrests 41, such as... Figure 3 In the illustrated embodiment 2, the armrest can provide a support point for the user's elbows, reducing pressure on the lumbar spine when sitting for a long time.

[0042] Specifically, a sliding block 23 is fixedly installed at the bottom end of the lower backrest tube 21. The sliding block 23 is sleeved on the first support tube 100 and can be moved to any position on the first support tube 100 and locked. Figure 5 The illustrated embodiment 4 changes the tilt angle of the backrest tube by adjusting the movement of the sliding block, thereby changing the tilt angle of the folding chair back and ensuring that the user can adjust to the most comfortable angle to lean back.

[0043] Specifically, the multiple folding chairs are fixedly connected as a whole by a connector 5, such as... Figure 6 In Embodiment 5, multiple folding chairs can be fixed together as a whole through connectors, thereby improving the folding chairs' resistance to tipping over and making them more suitable for uneven outdoor ground.

[0044] Specifically, the upper backrest tube 20 and the lower backrest tube 21 are irregularly shaped tubes. The irregularly shaped tubes can prevent the upper backrest tube and the lower backrest tube from rotating, and ensure that the spring pin of the upper backrest tube and the pin hole of the lower backrest tube are in the same position.

[0045] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A folding chair structure, comprising a support assembly (1) and a backrest assembly (2), the support assembly (1) being able to unfold and fold so that the folding chair can switch between an unfolded state and a folded state, the backrest assembly (2) being disposed on one side of the support assembly (1) and comprising an upper backrest tube (20) and a lower backrest tube (21) that can be nested together, the upper backrest tube (20) and the lower backrest tube (21) being locked together by a locking structure (22); Its features are, Also includes: The locking structure (22) includes a triggering component (220) disposed at the bottom end of the upper tube (20) of the backrest; Unlock slider (3), which is sleeved on the lower backrest tube (21), and when the support assembly (1) is closed, the unlock slider (3) moves upward along the lower backrest tube (21) to press against the trigger member (220), thereby opening the lock structure (22) that locks the upper backrest tube (20) and the lower backrest tube (21).

2. The folding chair structure as described in claim 1, characterized in that: The support assembly (1) includes a cross tube group (10) and a hinge seat (11), the hinge seat (11) being used to hinge the sides of adjacent cross tube groups (10) to each other.

3. The folding chair structure as described in claim 1, characterized in that: The locking structure (22) also includes a pin hole (221) at the top of the lower backrest tube (21), and the triggering component (220) is a spring pin. The pin hole (221) is used to cooperate with the spring pin to lock the upper backrest tube (20).

4. The folding chair structure as described in claim 3, characterized in that: The unlocking slider (3) is provided with a guide surface (30) corresponding to the position of the spring pin.

5. The folding chair structure as described in claim 2, characterized in that: The cross tube assembly (10) includes a first support tube (100) and a second support tube (101), which are arranged crosswise and connected by a connecting pin (102) at the intersection.

6. The folding chair structure as described in claim 2, characterized in that: The unlocking slider (3) is horizontally positioned directly above the hinge seat (11), and a third support tube (12) is fixedly provided between the unlocking slider (3) and the hinge seat (11).

7. The folding chair structure as described in claim 1, characterized in that: It also includes a seat surface (4), which is disposed on the support assembly (1), with one end extending upward to form a backrest (40). The backrest (40) is disposed on one side of the backrest assembly (2), and armrests (41) are provided on both sides of the backrest (40). The top end of the support assembly (1) extends upward to form a fixing part (13) for fixing the armrests (41).

8. A folding chair structure as described in claim 5, characterized in that: A sliding block (23) is fixedly provided at the bottom end of the lower backrest tube (21). The sliding block (23) is sleeved on the first support tube (100) and can be moved to any position of the first support tube (100) and locked.

9. A folding chair structure as described in claim 1, characterized in that: The multiple folding chairs are fixedly connected as one unit by a connector (5).

10. A folding chair structure as described in claim 4, characterized in that: The upper backrest tube (20) and the lower backrest tube (21) are irregularly shaped tubes.

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