Backrest adjusting device for folding chair and folding chair
By designing a folding chair backrest adjustment device that includes an adjustment mechanism and a crossbar, the problems of unstable backrest adjustment and inconvenient portability in the prior art are solved, and multi-position adjustment, convenient operation, and improved safety are achieved.
Patent Information
- Application Number
- CN202421201993.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-30
AI Technical Summary
The existing fishing chair back adjustment device has an unstable structure and is easy to loosen. The backrest needs to be completely overlapped with the seat cushion to achieve folding and storage, which is inconvenient to carry.
Design a backrest adjustment device for a folding chair, which includes two opposite adjustment mechanisms and a crossbar connecting these adjustment mechanisms. It realizes limit and convenient adjustment through gear adjustment teeth and return springs.
It realizes multi-position backrest adjustment, and users can choose more angles; the hidden spring design improves the aesthetics; one-hand operation is easy to adjust, saving time and effort; the backrest can be adjusted upward without pressing, just by lifting, making storage more convenient; The rocking of the backrest after the fishing chair is folded is changed, which increases the sense of security; when fishing, the backrest can drop instantly, improving the convenience of operation.
Smart Images
Figure CN222367384U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of portable seats, in particular to a backrest adjusting device for a folding chair and a folding chair using the backrest adjusting device. Background Art
[0002] The existing fishing chair backrest adjustment methods are too simple and the adjustment is too complicated. They are roughly divided into two types. One is the traditional clamping method, which achieves the fixing effect by clamping two gear parts together. When adjustment is required, the screws used to fix the two parts need to be turned, and both sides need to be adjusted at the same time to loosen them to achieve the purpose of adjustment. The other is to achieve the purpose of adjustment through the locking of gears. The biggest disadvantage is that the backrest needs to be completely overlapped with the seat cushion when adjusting backwards, and the fishing chair will become loose when it is stored, which is not convenient to carry. Utility Model Content
[0003] The purpose of the utility model is to provide a backrest adjustment device for a folding chair and a folding chair using the backrest adjustment device in view of the deficiencies in the prior art, thereby solving the problems that the prior art backrest adjustment device is unstable in structure, easy to loosen, and the backrest needs to be completely overlapped with the seat cushion to be folded and stored, which is inconvenient to carry.
[0004] The technical solution adopted by the utility model to achieve the above-mentioned purpose is:
[0005] A backrest adjustment device for a folding chair, comprising two adjustment mechanisms arranged opposite to each other, and a cross bar connecting the two adjustment mechanisms and realizing a limiting function; wherein the adjustment mechanism comprises a connecting base, an adjustment limiter arranged on the connecting base and movably connected to the connecting base through a rotating shaft, cross bar movable through holes are arranged on both sides of the connecting base, and the end of the cross bar passes through the connecting base through the cross bar movable through holes; a gear adjustment tooth is arranged at the lower end of the adjustment limiter, the tooth groove of the gear adjustment tooth cooperates with the cross bar to realize limiting, and the end of the cross bar is connected to the rotating shaft through a reset spring.
[0006] The gear adjustment teeth are arranged to be inclined in the same direction, so that the adjustment limit member can only rotate in one direction relative to the connecting base.
[0007] The adjusting limiter comprises an upper connecting member arranged at the upper end, an arc-shaped limiter is arranged at the lower end of the upper connecting member, and the gear adjusting tooth is arranged on the arc-shaped limiter.
[0008] A first rotating shaft through hole is provided in the middle of the arc-shaped limiting member, and two ends of the rotating shaft pass through the first rotating shaft through hole and are connected to the connecting base.
[0009] The arc-shaped limiting member is also provided with a storage limiting slot.
[0010] A lower connecting piece is provided at the lower end of the connecting base, and a supporting piece is provided at the upper end of the lower connecting piece, which cooperates with the adjusting limiting piece and is sleeved on the outer side of the arc-shaped limiting piece.
[0011] The lower connecting piece is a tubular structure.
[0012] The lower connecting member is a planar structure.
[0013] A folding chair implementing the backrest adjusting device comprises a foldable folding chair main body part and a backrest connected to the folding chair main body part via the backrest adjusting device.
[0014] The beneficial effects of the utility model are:
[0015] 1. The adjustment gear adopts multi-position backrest adjustment, allowing users to have more angle options;
[0016] 2. The hidden design of the spring built into the adjustment device makes the visual appearance more beautiful and unified;
[0017] 3. The backrest can be adjusted with one hand by pressing the crossbar, which changes the traditional two-handed adjustment, saving time and effort and providing a better experience;
[0018] 4. The backrest can be adjusted upwards without pressing, just pull it up, accompanied by a mechanical sound, making it more convenient for users to store it;
[0019] 5. After the fishing chair is folded and stored, the backrest swings back and forth, and the experience is safer;
[0020] 6. After catching a fish, just press the connecting rod backwards, and the backrest will drop instantly, allowing anglers to boldly pull the fish backwards;
[0021] 7. The later connecting shaft gear lever adopts a rubber round tube with a concave and convex design in the middle, which makes it feel warmer and provides a better experience. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;
[0023] Figure 2 for Figure 1 Exploded image;
[0024] Figure 3 This is a schematic diagram of the adjustment mechanism of Example 1;
[0025] Figure 4 This is a schematic diagram of the structure of the folding chair in Example 1;
[0026] Figure 5 This is a schematic diagram of the overall structure of Example 2;
[0027] Figure 6 for Figure 5 Exploded image;
[0028] Figure 7 This is a schematic diagram of the adjustment structure of Example 2;
[0029] Figure 8 This is a schematic diagram of the structure of a folding chair according to Embodiment 2.
[0030] In the figure: 1. Crossbar 2. Connecting base 3. Rotating shaft 4. Adjusting limit piece
[0031] 5. Crossbar movable hole 6. Gear adjustment gear 7. Return spring
[0032] 8. Upper connecting piece 9. Arc-shaped limit piece 10. First rotating shaft through hole
[0033] 11. Second shaft through hole 12. Storage limit slot 13. Lower connecting piece
[0034] 14. Support DETAILED DESCRIPTION
[0035] Example 1: See Figures 1 to 4 The present embodiment provides a backrest adjustment device for a folding chair, which includes two adjustment mechanisms arranged opposite to each other, and a cross bar 1 connecting the two adjustment mechanisms and realizing a limiting function; wherein the adjustment mechanism includes a connecting base 2, an adjustment limiter 4 arranged on the connecting base 2 and movably connected to the connecting base 2 through a rotating shaft 3, cross bar movable through holes 5 are arranged on both sides of the connecting base 2, and the end of the cross bar 1 passes through the connecting base 2 through the cross bar movable through holes 5; a gear adjustment tooth 6 is arranged at the lower end of the adjustment limiter 4, the tooth groove of the gear adjustment tooth 6 cooperates with the cross bar 1 to realize limiting, and the end of the cross bar 1 is connected to the rotating shaft 3 through a reset spring 7.
[0036] The gear adjustment teeth 6 are arranged to be inclined in the same direction, so that the adjustment limit member 4 can only rotate in one direction relative to the connecting base 2 .
[0037] The adjusting limit member 4 includes an upper connecting member 8 arranged at the upper end, an arc-shaped limit member 9 is arranged at the lower end of the upper connecting member 8 , and the gear adjusting tooth 6 is arranged on the arc-shaped limit member 9 .
[0038] A first rotating shaft through hole 10 is provided in the middle of the arc-shaped limiting member 4 , and both ends of the rotating shaft 3 pass through the first rotating shaft through hole 10 to be connected to the connecting base 2 .
[0039] On the connection base 2 , a second rotation shaft through hole 11 is provided corresponding to the first rotation shaft through hole 10 , and the rotation shaft 3 passes through the first rotation shaft through hole 10 and then passes through the second rotation shaft through hole 11 to be provided on the connection base 2 .
[0040] The arc-shaped limiting member 9 is also provided with a receiving limiting slot 12 .
[0041] A lower connecting member 13 is disposed at the lower end of the connecting base 2 , and a supporting member 14 is disposed at the upper end of the lower connecting member 13 , which cooperates with the adjusting limit member 4 and is sleeved on the outer side of the arc-shaped limit member 9 .
[0042] The lower connecting member 13 is a tubular structure.
[0043] The storage limit slot 12 is arranged at the upper end of the arc-shaped limit member 9 .
[0044] The cross bar 1 is a structure with thin ends and thick middle.
[0045] The crossbar 1 is of equal size.
[0046] A folding chair implementing the backrest adjusting device comprises a foldable folding chair main body part and a backrest connected to the folding chair main body part via the backrest adjusting device.
[0047] Example 2: See Figures 5 to 8 This embodiment provides a folding chair backrest adjustment device, the structure of which is basically the same as that of the first embodiment, except that:
[0048] The lower connecting member 13 is a planar structure.
[0049] The storage limiting slot 12 is arranged at the front end of the arc-shaped limiting member 9 .
[0050] However, the above description is only a preferred feasible embodiment of the present utility model and is not intended to limit the patent scope of the present utility model. Therefore, all other embodiments recorded in the present utility model and equivalent changes made thereto are included in the protection scope of the present utility model.
Claims
1. A backrest adjustment device for a folding chair, characterized in that: It includes two adjusting mechanisms arranged opposite to each other, and a cross bar connecting the two adjusting mechanisms and realizing a limiting function; wherein, the adjusting mechanism includes a connecting base, an adjusting limit piece arranged on the connecting base and movably connected to the connecting base through a rotating shaft, cross bar movable through holes are arranged on both sides of the connecting base, and the end of the cross bar passes through the connecting base through the cross bar movable through holes; a gear adjusting tooth is arranged at the lower end of the adjusting limit piece, and the tooth groove of the gear adjusting tooth cooperates with the cross bar to realize limiting, and the end of the cross bar is connected to the rotating shaft through a reset spring.
2. The folding chair backrest adjustment device according to claim 1, characterized in that: The gear adjustment teeth are arranged to be inclined in the same direction, so that the adjustment limit member can only rotate in one direction relative to the connecting base.
3. The folding chair backrest adjustment device according to claim 1, characterized in that: The adjusting limiter comprises an upper connecting member arranged at the upper end, an arc-shaped limiter is arranged at the lower end of the upper connecting member, and the gear adjusting tooth is arranged on the arc-shaped limiter.
4. The folding chair backrest adjustment device according to claim 3, characterized in that: A first rotating shaft through hole is provided in the middle of the arc-shaped limiting member, and two ends of the rotating shaft pass through the first rotating shaft through hole and are connected to the connecting base.
5. The folding chair backrest adjustment device according to claim 4, characterized in that: The arc-shaped limiting member is also provided with a storage limiting slot.
6. The folding chair backrest adjustment device according to claim 3, characterized in that: A lower connecting piece is provided at the lower end of the connecting base, and a supporting piece is provided at the upper end of the lower connecting piece, which cooperates with the adjusting limiting piece and is sleeved on the outer side of the arc-shaped limiting piece.
7. The folding chair backrest adjustment device according to claim 6, characterized in that: The lower connecting piece is a tubular structure.
8. The folding chair backrest adjustment device according to claim 6, characterized in that: The lower connecting member is a planar structure.
9. A folding chair implementing the backrest adjustment device according to any one of claims 1 to 8, characterized in that: The foldable chair comprises a foldable folding chair main body part and a backrest connected with the folding chair main body part through a backrest adjusting device.