A foot-operated self-locking folding seat
The foot-operated self-locking structure solves the problem of existing folding seats not being able to lock themselves, enabling automatic unlocking and locking of the seats and improving ease of use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI HENGYICHENG STAGE EQUIP CO LTD
- Filing Date
- 2025-07-22
- Publication Date
- 2026-06-30
AI Technical Summary
Existing folding chairs do not automatically lock when moving from a folded to an open position, requiring manual locking, which is inconvenient.
A foot-operated self-locking folding seat was designed. Through the cooperation of connecting components and torsion springs, the self-locking function is achieved by using the mechanical structure of the foot lever and locking block. Stepping down on the foot lever unlocks the seat, and the torsion spring returns to its original position to automatically lock it.
The system enables automatic unlocking and locking of the seats, facilitating folding and unfolding operations and improving ease of use.
Smart Images
Figure CN224420490U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of folding seat technology, and in particular relates to a foot pedal self-locking folding seat. Background Technology
[0002] A standard chair consists of a seat cushion and a seat back. In a folding chair, the seat back can pivotally connect with the seat cushion. There are two common configurations: one where the seat cushion can rotate around a pivot to fold the chair upwards, and the other where the seat back can rotate around a pivot to fold the chair forwards. Existing chair designs have the following problems when folding: the chair cannot self-lock after moving from the folded to the open position, requiring manual locking, which is inconvenient.
[0003] To solve the above problems, a new type of folding seat is needed. Utility Model Content
[0004] The purpose of this invention is to provide a foot-operated self-locking folding seat with a self-locking function for easy use.
[0005] To achieve the above objectives, this utility model provides a foot-operated self-locking folding chair, including a seat cushion and a backrest. The two sides of the backrest are respectively connected to the two sides of the seat cushion via connecting components. The connecting components include a first connecting member fixedly connected to the seat cushion and a second connecting member fixedly connected to the backrest. A fixed shaft and a limiting member are fixedly connected to the first connecting member. A foot lever and a torsion spring are provided on the fixed shaft. One end of the foot lever is rotatably connected to the fixed shaft. A protrusion is provided on the top surface of the foot lever. The side of the protrusion closest to the fixed shaft is a locking surface, and the side of the protrusion furthest from the fixed shaft is a locking surface. The surface is a gentle slope, and the angle between the locking surface and the top surface of the pedal is an acute angle. When the pedal is in a horizontal state, the top surface of the pedal is in contact with the limiting member. The torsion spring is sleeved on the fixed shaft, and one end of the torsion spring is fixedly connected to the fixed shaft, and the other end of the torsion spring is fixedly connected to the pedal. A connecting shaft and a locking block are fixedly connected to the second connecting member. The connecting shaft is rotatably connected to the first connecting member. The height of the locking block from the ground is lower than the height of the connecting shaft from the ground. The two ends of the locking block are in contact with the first connecting member and the locking surface, respectively.
[0006] Preferably, the first connector includes a first bent surface and a second bent surface integrally connected at a 90° angle. The first bent surface is fixedly connected to the side of the seat cushion, and the top of the first bent surface is rotatably connected to the connecting shaft. The fixing shaft and the limiting member are fixedly connected to the first bent surface. The second connector includes a third bent surface and a fourth bent surface integrally connected at a 90° angle. The third bent surface is fixedly connected to the side of the backrest away from the seat cushion, and the connecting shaft and the locking block are fixedly connected to the fourth bent surface.
[0007] Preferably, a handrail assembly is connected between the first connector and the second connector. The handrail assembly includes a first movable rod and a second movable rod. One end of the first movable rod is rotatably connected to a first pivot on the second bending surface. The other end of the first movable rod is movably connected to one end of the second movable rod through a hinge. The other end of the second movable rod is rotatably connected to a protruding post that is vertically fixed on the fourth bending surface. A handrail is fixedly connected to the top surface of the second movable rod.
[0008] Preferably, one end of the hinge is rotatably connected to the first movable rod via a second pivot, and the other end of the hinge is rotatably connected to the second movable rod via a third pivot.
[0009] Preferably, a sponge pad is fixedly connected to the top surface of the armrest, and a storage groove is provided at the end of the armrest away from the backrest.
[0010] Therefore, the foot-operated self-locking folding seat of this utility model with the above-mentioned structure has the following beneficial effects: stepping down on the foot lever can unlock the folding seat, thereby facilitating the backrest to fold the seat; when the folding seat is unfolded, the foot lever can be automatically reset by the cooperation of the torsion spring and the limiting component, and after reset, the protrusion on the foot lever and the locking block cooperate to lock the folding seat in the open state.
[0011] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of a connecting component in a foot-operated self-locking folding seat according to an embodiment of the present invention;
[0013] Figure 2 This is a schematic diagram of the structure of an embodiment of the armrest in a foot-operated self-locking folding seat according to the present invention;
[0014] Figure 3 This is a schematic diagram of an embodiment of the foot-operated self-locking folding seat of this utility model.
[0015] In the diagram: 1. Seat cushion; 2. Backrest; 3. First connecting piece; 301. First bending surface; 302. Second bending surface; 4. Second connecting piece; 401. Third bending surface; 402. Fourth bending surface; 5. Fixed shaft; 6. Limiting piece; 7. Footrest; 8. Torsion spring; 9. Protrusion; 10. Connecting shaft; 11. Locking block; 12. First movable rod; 13. Second movable rod; 14. First pivot; 15. Hinge; 16. Armrest; 17. Second pivot; 18. Protrusion; 19. Sponge pad; 20. Storage slot. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0018] Example
[0019] Reference Figure 1-3As shown, this embodiment provides a foot-operated self-locking folding seat, including a seat cushion 1 and a backrest 2. The two sides of the backrest 2 are connected to the two sides of the seat cushion 1 via connecting components. The connecting components include a first connecting member 3 fixedly connected to the seat cushion 1 and a second connecting member 4 fixedly connected to the backrest 2. A fixed shaft 5 and a limiting member 6 are fixedly connected to the first connecting member 3. A foot lever 7 and a torsion spring 8 are provided on the fixed shaft 5. One end of the foot lever 7 is rotatably connected to the fixed shaft 5, and a protrusion 9 is provided on the top surface of the foot lever 7. The side of the protrusion 9 near the fixed shaft 5 is a locking surface, and the side of the protrusion 9 away from the fixed shaft 5 is a gentle slope surface. The angles between the locking surface and the gentle slope surface and the top surface of the foot lever 7 are both acute angles. When the foot lever 7 is in a horizontal state, the top surface of the foot lever 7 contacts and connects with the limiting member 6. The limiting member 6 is used to limit the foot lever 7, ensuring that the foot lever 7 can maintain a horizontal position after being reset under the action of the torsion spring 8. A torsion spring 8 is sleeved on the fixed shaft 5, with one end of the torsion spring 8 fixedly connected to the fixed shaft 5 and the other end fixedly connected to the pedal 7. The torsion spring 8 provides power for the pedal 7 to return to its original position. A connecting shaft 10 and a locking block 11 are fixedly connected to the second connecting member 4. The connecting shaft 10 is rotatably connected to the first connecting member 3 and is the rotation center of the backrest 2 when the seat is folded. The locking block 11 is lower than the connecting shaft 10 in height from the ground, and both ends of the locking block 11 are in contact with the first connecting member 3 and the locking surface, respectively. The cooperation between the first connecting member 3 and the locking surface ensures that the backrest 2 will neither tilt backward nor tilt forward when unfolded.
[0020] When the seat needs to be folded, step 7 is pressed down. Step 7 rotates around the fixed shaft 5, causing the locking surface on the protrusion 9 to separate from the locking block 11. At this time, pushing the backrest 2 will fold the seat. After the seat is folded, step 7 returns to the horizontal position and contacts the limiting member 6 under the action of torsion spring 8. When the seat needs to be unfolded, the backrest 2 is flipped up. During the flipping process, the locking block 11 moves along the gentle slope on the protrusion 9. Step 7 is pressed down. When the locking block 11 continues to move and contacts the first connecting member 3, the locking block 11 separates from the gentle slope on the protrusion 9. Step 7 rotates up under the action of torsion spring 8. At this time, the locking surface on the protrusion 9 contacts the locking block 11, thus locking the backrest 2 in the unfolded state.
[0021] In a further optimized design, the first connector 3 includes a first bent surface 301 and a second bent surface 302 integrally connected at a 90° angle. The first bent surface 301 is fixedly connected to the side of the seat cushion 1, and the top of the first bent surface 301 is rotatably connected to the connecting shaft 10. A fixing shaft 5 and a limiting member 6 are fixedly connected to the first bent surface 301. The second connector 4 includes a third bent surface 401 and a fourth bent surface 402 integrally connected at a 90° angle. The third bent surface 401 is fixedly connected to the side of the backrest 2 away from the seat cushion 1, and a connecting shaft 10 and a locking block 11 are fixedly connected to the fourth bent surface 402. In use, the second bent surface 302 facilitates the fixing of the entire folding seat, while the third and fourth bent surfaces 401 and 402 provide coverage for the side of the backrest 2.
[0022] In a further preferred embodiment, an armrest assembly 16 is connected between the first connecting member 3 and the second connecting member 4. The armrest assembly 16 includes a first movable rod 12 and a second movable rod 13. One end of the first movable rod 12 is rotatably connected to a first pivot 14 on the second bending surface 302, and the other end of the first movable rod 12 is movably connected to one end of the second movable rod 13 via a hinge 15. The other end of the second movable rod 13 is rotatably connected to a protruding post 18 vertically fixed on the fourth bending surface, and the armrest 16 is fixedly connected to the top surface of the second movable rod 13. The armrest assembly 16 can unfold as the backrest 2 unfolds and fold as the backrest 2 folds. In addition, the armrest assembly 16 can improve the seating comfort of the seat occupant.
[0023] In a further preferred embodiment, one end of the hinge 15 is rotatably connected to the first movable rod 12 via a second pivot 17, and the other end of the hinge 15 is rotatably connected to the second movable rod 13 via a third pivot. The hinge 15 enables the rotatable connection between the first movable rod 12 and the second movable rod 13.
[0024] In a further optimized design, a sponge pad 19 is fixedly connected to the top surface of the armrest 16. The fixed connection method can be bolted. The sponge pad 19 can increase the comfort of the rider. A storage slot 20 is provided at the end of the armrest 16 away from the backrest 2. The storage slot 20 is convenient for holding drinks, beverages and other sundries.
[0025] Therefore, the foot-operated self-locking folding seat of this utility model with the above-mentioned structure has a self-locking function and is convenient to use.
[0026] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0027] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.
Claims
1. A foot-operated self-locking folding chair, comprising a seat cushion (1) and a backrest (2), characterized in that: The backrest (2) is connected to the two sides of the seat cushion (1) via connecting components. The connecting components include a first connecting member (3) fixedly connected to the seat cushion (1) and a second connecting member (4) fixedly connected to the backrest (2). A fixed shaft (5) and a limiting member (6) are fixedly connected to the first connecting member (3). A foot rod (7) and a torsion spring (8) are provided on the fixed shaft (5). One end of the foot rod (7) is rotatably connected to the fixed shaft (5). A protrusion (9) is provided on the top surface of the foot rod (7). The side of the protrusion (9) near the fixed shaft (5) is a locking surface, and the side of the protrusion (9) away from the fixed shaft (5) is a gentle slope surface. The locking surface and the gentle slope surface are connected to the foot rod. The included angles between the top surfaces of the rod (7) are all acute angles. When the pedal (7) is in a horizontal state, the top surface of the pedal (7) is in contact with the limiting member (6). The torsion spring (8) is sleeved on the fixed shaft (5), and one end of the torsion spring (8) is fixedly connected to the fixed shaft (5). The other end of the torsion spring (8) is fixedly connected to the pedal (7). A connecting shaft (10) and a locking block (11) are fixedly connected on the second connecting member (4). The connecting shaft (10) is rotatably connected to the first connecting member (3). The height of the locking block (11) from the ground is lower than the height of the connecting shaft (10) from the ground. The two ends of the locking block (11) are in contact with the first connecting member (3) and the locking surface, respectively.
2. The foot-operated self-locking folding seat according to claim 1, characterized in that: The first connector (3) includes a first bent surface (301) and a second bent surface (302) integrally connected at a 90° angle. The first bent surface (301) is fixedly connected to the side of the cushion (1). The top of the first bent surface (301) is rotatably connected to the connecting shaft (10). The fixing shaft (5) and the limiting member (6) are fixedly connected to the first bent surface (301). The second connector (4) includes a third bent surface (401) and a fourth bent surface (402) integrally connected at a 90° angle. The third bent surface (401) is fixedly connected to the side of the backrest (2) away from the cushion (1). The connecting shaft (10) and the locking block (11) are fixedly connected to the fourth bent surface (402).
3. The foot-operated self-locking folding seat according to claim 2, characterized in that: A handrail (16) assembly is connected between the first connector (3) and the second connector (4). The handrail (16) assembly includes a first movable rod (12) and a second movable rod (13). One end of the first movable rod (12) is rotatably connected to a first pivot (14) on the second bending surface (302). The other end of the first movable rod (12) is movably connected to one end of the second movable rod (13) through a hinge (15). The other end of the second movable rod (13) is rotatably connected to a protrusion (18) that is vertically fixed on the fourth bending surface. The top surface of the second movable rod (13) is fixedly connected to the handrail (16).
4. The foot-operated self-locking folding seat according to claim 3, characterized in that: One end of the hinge (15) is rotatably connected to the first movable rod (12) via the second rotating shaft (17), and the other end of the hinge (15) is rotatably connected to the second movable rod (13) via the third rotating shaft.
5. The foot-operated self-locking folding seat according to claim 3, characterized in that: A sponge pad (19) is fixedly connected to the top surface of the armrest (16), and a storage groove (20) is provided at the end of the armrest (16) away from the backrest (2).