Folding chair
By introducing the design of connectors, elastic pins and pressing parts into the folding chair, the problem of the folding chair automatically folding on uneven terrain is solved, and a folding chair that can be safely used by children is realized, ensuring that the chair can only be folded under manual control, thereby improving safety.
Patent Information
- Application Number
- CN202422403102.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-09-30
AI Technical Summary
Existing folding chairs tend to fold automatically when used on uneven terrain, especially when children jump on them, which is more likely to cause the chair to fold automatically, posing a safety hazard.
A folding chair structure is designed. A connecting piece, an elastic pin and a pressing piece are set between the chair back frame and the chair foot frame. The elastic pin is used to limit the rotation of the chair back frame. The pressing piece needs to be manually operated to complete the folding, preventing the chair from folding automatically.
This effectively prevents the chair from automatically folding when a child jumps or falls on it, improving safety and ensuring that the chair can only be folded under manual control, avoiding the risk of children being trapped.
Smart Images
Figure CN223298744U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of chairs, in particular to a folding chair. Background Art
[0002] A folding chair is a chair that can be freely extended or folded. Compared with a fixed chair, it can reduce the space occupied when stored and is convenient to carry or transport. Therefore, it is very popular among people. Current folding chairs are usually composed of a backrest, a seat and legs. The backrest and legs are rotatably connected by screws or other connecting parts to form a rotation point, and the user can rotate the backrest and legs around this rotation point. In order to allow users to sit on the folding chair safely, existing folding chairs usually have a rotating member at the rotation point of the legs. The upper end of the rotating member is connected to the backrest and abuts against the upper end of the legs. However, if this method is not on flat ground, such as a slight slope, uneven concrete ground or beach, the user sitting on the chair is likely to fall backward, causing the rotating member to rotate backward and fold. In particular, when some active children jump on the folding chair, it is more likely to cause the chair to automatically fold and the children are easily injured. Therefore, there is a need for a folding chair that can limit the automatic folding of the folding chair so that it will not fold even if the chair falls, and requires manual control to complete the folding. Summary of the Invention
[0003] The utility model aims to provide a folding chair with a simple structure, which can limit the automatic folding of the folding chair and will not fold even if the chair falls over, requiring manual control to complete the folding.
[0004] The purpose of this utility model is achieved in this way:
[0005] A folding chair comprises a front chair leg frame, a rear chair leg frame, a seat frame and a backrest frame arranged in front and back, the front end and the rear end of the seat frame being rotatably connected to the middle end of the front chair leg frame and the middle end of the rear chair leg frame respectively, the lower end of the backrest frame being rotatably arranged at the rear end of the seat frame, the rear chair leg frame being provided with a connecting piece, the two ends of the connecting piece being respectively provided with a first rotating rod and a second rotating rod, the first rotating rod passing through the rear chair leg frame and being rotatably connected thereto, the second rotating rod being rotatably connected to the lower end of the backrest frame and being able to abut against the rear chair leg frame, thereby limiting the connecting piece from rotating forward. The rear chair leg frame is provided with a mounting hole, and the mounting hole is provided with an elastic pin. The connecting piece is provided with a through hole, and one end of the elastic pin passes through the through hole, thereby limiting the connecting piece from rotating backward with the chair back frame and limiting the chair from folding. The connecting piece is also provided with a pressing piece, one end of the pressing piece is connected to the connecting piece, and the other end is convexly provided with a pressing portion, which abuts against the outer end of the elastic pin. Pressing the pressing portion can push the elastic pin to move inward, thereby driving the elastic pin out of the through hole. At this time, driving the chair back frame to fold can drive the connecting piece to rotate around the first rotating rod.
[0006] Furthermore, a sliding guide portion is protruding outward from the side of the connecting member, the through hole passes through one end of the sliding guide portion, and a sliding inclined surface is formed on the inner wall of the sliding guide portion. When the chair back frame drives the connecting member to rotate forward around the first rotating rod, the elastic pin can move along the sliding inclined surface and gradually retract into the rear chair leg frame.
[0007] Furthermore, a clamping seat and a clamping platform provided on the clamping seat are fixedly provided on the connecting member, the clamping seat and the clamping platform are circular, and the clamping platform is horizontally formed with clamping blocks on both sides, and one end of the pressing member is formed with a first clamping groove and a second clamping groove that are compatible with the clamping platform and the clamping block. The outer wall of the pressing member is also provided with a fastening screw, which passes through the pressing member and is threadedly connected to the clamping seat.
[0008] Furthermore, an elastic member is provided in the rear chair leg frame, one end of the elastic member abuts or is connected to the inner wall of the rear chair leg frame, and the other end abuts or is connected to the elastic pin.
[0009] Furthermore, the pressing member is a pressing sheet, and the elastic member is a spring or a spring.
[0010] Furthermore, a movable part is provided at the lower end of the chair back frame, and a horizontal socket and a vertical mounting portion are respectively provided on the movable part. The rear end of the seat frame passes through the socket, and a fixing screw is passed through the movable part. The fixing screw passes through the seat frame and limits the seat frame from being separated from the movable part. The lower end of the chair back frame is rotatably connected to the mounting portion.
[0011] Furthermore, the front and rear chair legs are provided with armrests, the upper ends of the front and rear chair legs are rotatably connected to the armrests, and the rear ends of the armrests are rotatably provided on the chair back frame.
[0012] Furthermore, a first rotating member and a second rotating member are provided in the armrest frame, and the first rotating member and the second rotating member rotate coaxially. The first rotating member includes a first rotating portion and a first insertion portion, one end of the first insertion portion can be inserted from the upper end of the front chair leg frame, and the other end is provided with a first abutment surface, and the second rotating member includes a second rotating portion and a second insertion portion, one end of the second insertion portion can be inserted from the upper end of the rear chair leg frame, and the other end is provided with a second abutment surface, and an eccentric portion is also provided on the first rotating portion and the second rotating portion. When the first rotating member and the second rotating member are rotated and unfolded, the eccentric portion on the first rotating portion abuts against the second abutment surface, and the eccentric portion on the second rotating portion abuts against the first abutment surface. At this time, the front chair leg frame and the rear chair leg frame are restricted from continuing to unfold.
[0013] Furthermore, an adjusting rod is provided in the armrest frame, an adjusting groove is provided on the inner wall of the armrest frame, and the end of the adjusting rod is provided in the adjusting groove.
[0014] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:
[0015] The folding chair of the present invention can prevent children from jumping or lying around and causing sudden collapse, and can prevent children from being trapped. Compared with folding chairs on the market, the folding chair of the present invention is safer. When folding, the rear end of the seat frame rotates backward around the rear leg frame, and the front leg frame rotates around the rotation point of the front end of the seat frame to move closer to the rear leg frame. The backrest frame rotates downward around the first rotation rod through the connecting piece and moves closer to the rear leg frame. The chair is compact after folding. When the folding chair is opened, the backrest frame is pulled upward, and the lower end of the backrest frame drives the connecting piece to rotate forward around the first rotation rod. When the folding chair is completely unfolded, the second rotation rod on the connecting piece abuts against the rear leg frame. At this time, the backrest frame is restricted from continuing to rotate backward around the first rotation rod. An elastic pin is provided in the rear leg frame, and one end of the elastic pin protrudes from the mounting hole and extends out of the through hole on the connecting piece. At this time, the connecting piece is restricted by the elastic pin and cannot rotate around the first rotation rod. The connecting piece is fixed, and the backrest frame cannot drive the connecting piece to rotate. The connecting piece rotates, and even if the child chair jumps, it will not affect the position deviation of the connecting piece, and even if the chair tilts, the connecting piece will not shift its position. When it needs to be folded, it is necessary to manually operate the pressing piece so that the pressing part on the pressing piece squeezes the elastic pin inward. When the elastic pin is squeezed, the elastic pin moves into the rear seat leg frame and gradually disengages from the through hole. At this time, if the user does not release his hand, the pressing part is in the through hole, preventing the elastic pin from returning to the through hole. At this time, the lower end of the connecting piece is no longer restricted by the connection with the rear seat leg frame, and the user can control the chair back frame to fold. After folding a little, the user can release the pressing piece and continue the folding action. At this time, the end of the elastic pin abuts against the side wall of the connecting piece and disengages from the abutment of the connecting piece as it continues to fold. The utility model improves safety, and folding cannot be completed by only manually pushing the elastic pin. The user must manually press the pressing piece so that the pressing part pushes the elastic pin completely out of the through hole on the connecting piece before folding. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a three-dimensional diagram of the present utility model.
[0017] Figure 2 It is a side view of the utility model.
[0018] Figure 3 This is a separation diagram of the rear chair leg frame and the connecting piece of the utility model.
[0019] Figure 4 It is a three-dimensional diagram of the connecting piece of the utility model.
[0020] Figure 5 This is one of the exploded views of the connector of the present invention.
[0021] Figure 6 This is the second exploded view of the connector of the present invention.
[0022] Figure 7This is a schematic diagram of the utility model in which the elastic pin is a spring piece in the rear chair leg frame.
[0023] Figure 8 This is a schematic diagram of the utility model in which the elastic pin is a spring in the rear chair leg frame.
[0024] Figure 9 This is a separation diagram of the chair seat frame and the chair back frame of the utility model.
[0025] Figure 10 It is a three-dimensional diagram of the handrail frame of the present utility model.
[0026] Figure 11 It is a three-dimensional diagram of the first rotating member and the second rotating member of the utility model.
[0027] Figure 12 It is a schematic diagram of the utility model after folding.
[0028] The meaning of the numbers in the figure:
[0029] 1-Front chair leg frame; 2-Rear chair leg frame; 3-Seat frame; 4-Back frame; 5-Connecting member; 6-First rotating rod; 7-Second rotating rod; 8-Mounting hole; 9-Elastic pin; 10-Through hole; 11-Pressing member; 12-Pressing portion; 13-Sliding guide portion; 14-Sliding inclined surface; 15-Clipping seat; 16-Clipping platform; 17-Clipping block; 18-First clipping groove; 19-Second clipping groove; 20-Fastening screw; 21-Moving member; 22-Inserting hole; 23-Mounting portion; 24-Armrest frame; 25-First rotating member; 26-Second rotating member; 27-First rotating portion; 28-First inserting portion; 29-First abutting surface; 30-Second rotating portion; 31-Second inserting portion;
[0030] 32 - second abutting surface; 33 - eccentric portion; 34 - adjusting rod; 35 - adjusting slot; 36 - elastic member. DETAILED DESCRIPTION
[0031] The present invention will be further described below in conjunction with specific embodiments:
[0032] A folding chair, comprising a front chair leg frame 1, a rear chair leg frame 2, a seat frame 3 and a backrest frame 4 arranged in front and back, the front end and the rear end of the seat frame 3 are rotatably connected to the middle end of the front chair leg frame 1 and the middle end of the rear chair leg frame 2 respectively, the lower end of the backrest frame 4 is rotatably arranged at the rear end of the seat frame 3, the rear chair leg frame 2 is provided with a connecting member 5, and the two ends of the connecting member 5 are respectively provided with a first rotating rod 6 and a second rotating rod 7, the first rotating rod 6 passes through the rear chair leg frame 2 and is rotatably connected thereto, the second rotating rod 7 is rotatably connected to the lower end of the backrest frame 4 and can be against the rear chair leg frame 2, thereby limiting the connecting member 5 from rotating forward, the rear chair leg frame 2 is provided with a mounting hole 8, and an elastic pin 9 is provided on the mounting hole 8. A through hole 10 is provided on the connecting member 5, and one end of the elastic pin 9 passes through the through hole 10, thereby limiting the connecting member 5 from rotating backward with the chair back frame 4 and limiting the folding of the chair. The connecting member 5 is also provided with a pressing member 11, one end of the pressing member 11 is connected to the connecting member 5, and the other end is convexly provided with a pressing portion 12, which abuts against the outer end of the elastic pin 9. Pressing the pressing portion 12 can push the elastic pin 9 to move inward, thereby driving the elastic pin 9 out of the through hole 10. At this time, driving the chair back frame 4 to fold can drive the connecting member 5 to rotate around the first rotating rod 6.
[0033] The utility model is a folding chair that can prevent children from jumping or lying around and causing sudden collapse, and can prevent children from being trapped. Compared with the folding chairs on the market, the utility model is safer. When folding, the rear end of the seat frame 3 rotates backward around the rear chair leg frame 2, and the front chair leg frame 1 rotates around the rotation point of the front end of the seat frame 3 to move closer to the rear chair leg frame 2. The backrest frame 4 rotates downward around the first rotating rod 6 through the connecting member 5 and moves closer to the rear chair leg frame 2. The folded chair is compact. When the folding chair is opened, the backrest frame 4 is pulled upward, and the backrest frame 4 is pulled back. The lower end drives the connecting member 5 to rotate forward around the first rotating rod 6. When the folding chair is fully unfolded, the second rotating rod 7 on the connecting member 5 is against the rear chair leg frame 2. At this time, the seat back frame 4 is restricted from continuing to rotate backward around the first rotating rod 6. An elastic pin 9 is provided in the rear chair leg frame 2. One end of the elastic pin 9 protrudes from the mounting hole 8 and extends out of the through hole 10 on the connecting member 5. At this time, the connecting member 5 is restricted by the elastic pin 9 and cannot rotate around the first rotating rod 6. The connecting member 5 is fixed, and the seat back frame 4 cannot drive the connecting member 5 to rotate. The user must manually press the pressing piece 11 so that the pressing portion 12 pushes the elastic pin 9 completely out of the through hole 10 on the connecting member 5 before folding.
[0034] Preferably, the side of the connecting member 5 is provided with a sliding guide portion 13 protruding outward, the through hole 10 passes through one end of the sliding guide portion 13, and the inner wall of the sliding guide portion 13 is formed with a sliding inclined surface 14. When the chair back frame 4 drives the connecting member 5 to rotate forward around the first rotating rod 6, the elastic pin 9 can move along the sliding inclined surface 14 and gradually shrink into the rear chair leg frame 2, so that when the connecting member 5 rotates forward around the first rotating rod 6, the elastic pin 9 can be smoothly stuck into the through hole 10. The sliding guide portion 13 has a sliding inclined surface 14 provided therein. When the connecting member 5 rotates forward around the first rotating rod 6, the elastic pin 9 protruding from the rear chair leg frame 2 touches the sliding inclined surface 14. As the connecting member 5 rotates forward, the elastic pin 9 is squeezed inward by the sliding inclined surface 14 and shrinks inwardly until it reaches the through hole 10. The elastic pin 9 is no longer squeezed, and the elastic member 36 can push the elastic pin 9 outward from the through hole 10 and limit the rotation of the connecting member 5. The sliding guide portion 13 also plays a guiding role.
[0035] Preferably, a clamping seat 15 and a clamping platform 16 provided on the clamping seat 15 are fixed on the connecting member 5, the clamping seat 15 and the clamping platform 16 are circular, and the clamping platform 16 is laterally formed with clamping blocks 17 on both sides, and one end of the pressing member 11 is formed with a first clamping groove 18 and a second clamping groove 19 adapted to the clamping platform 16 and the clamping block 17. The outer wall of the pressing member 11 is also provided with a fastening screw 20, which passes through the pressing member 11 and is threadedly connected to the clamping seat 15, is connected to the first clamping groove 18 through the clamping platform 16, and is fixed by the clamping block 17 and the second connecting groove. The fastening screw 20 prevents rotation, and the pressing member 11 cannot move alone and can only rotate synchronously with the connecting member 5.
[0036] Preferably, an elastic member 36 is provided in the rear chair leg frame 2, one end of the elastic member 36 abuts or is connected to the inner wall of the rear chair leg frame 2, and the other end abuts or is connected to the elastic pin 9. The elastic member 36 is provided in the rear chair leg frame 2, and the user does not need to manually pull the elastic pin 9. The elastic member 36 can actively push the elastic pin 9 to move outward.
[0037] Preferably, the pressing member 11 is a pressing sheet, and the elastic member 36 is a spring or a spring. The pressing sheet can be slightly pressed due to the length setting of the pressing sheet.
[0038] Preferably, a movable part 21 is provided at the lower end of the chair back frame 4, and a horizontal socket 22 and a vertical mounting portion 23 are respectively provided on the movable part 21. The rear end of the seat frame 3 passes through the socket 22, and a fixing screw is passed through the movable part 21. The fixing screw passes through the seat frame 3 and limits the seat frame 3 from being separated from the movable part 21. The lower end of the chair back frame 4 is rotatably connected to the mounting portion 23, which is convenient for connecting the folding chair, has strong connectivity, is more stable, and is easy to fix and disassemble. It only needs to be fixed with screws, and can be disassembled by rotating with a screwdriver.
[0039] Preferably, an armrest frame 24 is further provided on the front chair leg frame 1 and the rear chair leg frame 2. The upper ends of the front chair leg frame 1 and the rear chair leg frame 2 are rotatably connected to the armrest frame 24, and the rear end of the armrest frame 24 is rotatably provided on the chair back frame 4 for easy placement of the user's hands.
[0040] Preferably, the armrest frame 24 is provided with a first rotating member 25 and a second rotating member 26, the first rotating member 25 and the second rotating member 26 rotate coaxially, the first rotating member 25 includes a first rotating portion 27 and a first inserting portion 28, one end of the first inserting portion 28 can be inserted from the upper end of the front chair leg frame 1, and the other end is provided with a first abutting surface 29, the second rotating member 26 includes a second rotating portion 30 and a second inserting portion 31, one end of the second inserting portion 31 can be inserted from the upper end of the rear chair leg frame 2, and the other end is provided with a second abutting surface The first rotating part 27 and the second rotating part 30 are also provided with an eccentric part 33. When the first rotating member 25 and the second rotating member 26 are rotated and unfolded, the eccentric part 33 on the first rotating part 27 abuts against the second abutting surface 32, and the eccentric part 33 on the second rotating part 30 abuts against the first abutting surface 29. At this time, the front chair leg frame 1 and the rear chair leg frame 2 are restricted from continuing to unfold, limiting the maximum expansion of the front chair leg frame 1 and the rear chair leg frame 2, and preventing further expansion by the eccentric part 33 abutting against the bead abutting surface.
[0041] Preferably, an adjustment rod 34 is further provided in the armrest frame 24 , an adjustment slot 35 is provided on the inner wall of the armrest frame 24 , and the end of the adjustment rod 34 is provided in the adjustment slot 35 , so as to facilitate adjustment of the front and rear position of the armrest frame 24 .
[0042] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.
Claims
1. A folding chair, comprising a front chair leg frame (1), a rear chair leg frame (2), a seat frame (3) and a back frame (4) arranged in front and back, characterized in that: The front and rear ends of the seat frame (3) are rotatably connected to the middle ends of the front and rear seat frames (1) and (2), respectively. The lower end of the seat back frame (4) is rotatably arranged at the rear end of the seat frame (3). The rear seat frame (2) is provided with a connecting piece (5). The two ends of the connecting piece (5) are respectively provided with a first rotating rod (6) and a second rotating rod (7). The first rotating rod (6) passes through the rear seat frame (2) and is rotatably connected thereto. The second rotating rod (7) is rotatably connected to the lower end of the seat back frame (4) and can abut against the rear seat frame (2), thereby limiting the forward rotation of the connecting piece (5). The rear seat frame (2) is provided with a mounting hole (8). The mounting hole (8) is provided with an elastic Pin (9), a through hole (10) is provided on the connecting member (5), one end of the elastic pin (9) passes through the through hole (10), thereby limiting the connecting member (5) from rotating backward with the chair back frame (4) and limiting the chair from folding, and a pressing member (11) is also provided on the connecting member (5), one end of the pressing member (11) is connected to the connecting member (5), and the other end is provided with a pressing portion (12), the pressing portion (12) is in contact with the outer end of the elastic pin (9), pressing the pressing portion (12) can push the elastic pin (9) to move inward, thereby driving the elastic pin (9) out of the through hole (10), at this time driving the chair back frame (4) to fold and driving the connecting member (5) to rotate around the first rotating rod (6).
2. A folding chair according to claim 1, characterized in that: The connecting member (5) is provided with a sliding guide portion (13) protruding outward from the side, the through hole (10) passes through one end of the sliding guide portion (13), and the inner wall of the sliding guide portion (13) is formed with a sliding inclined surface (14). When the chair back frame (4) drives the connecting member (5) to rotate forward around the first rotating rod (6), the elastic pin (9) can move along the sliding inclined surface (14) and gradually retract into the rear chair leg frame (2).
3. A folding chair according to claim 2, characterized in that: The connecting member (5) is fixedly provided with a clamping seat (15) and a clamping platform (16) provided on the clamping seat (15); the clamping seat (15) and the clamping platform (16) are circular; the clamping platform (16) is formed with clamping blocks (17) on both sides thereof; one end of the pressing member (11) is formed with a first clamping groove (18) and a second clamping groove (19) adapted to the clamping platform (16) and the clamping block (17); the outer wall of the pressing member (11) is further provided with a fastening screw (20); the fastening screw (20) passes through the pressing member (11) and is threadedly connected to the clamping seat (15).
4. The folding chair according to claim 1, characterized in that: An elastic member (36) is provided in the rear chair leg frame (2), one end of the elastic member (36) abuts or is connected to the inner wall of the rear chair leg frame (2), and the other end abuts or is connected to the elastic pin (9).
5. The folding chair according to claim 4, characterized in that: The pressing member (11) is a pressing sheet, and the elastic member (36) is a spring or a spring.
6. The folding chair according to claim 5, characterized in that: The lower end of the chair back frame (4) is provided with a movable part (21), and a horizontal insertion hole (22) and a vertical mounting portion (23) are respectively provided on the movable part (21). The rear end of the seat frame (3) passes through the insertion hole (22), and a fixing screw is passed through the movable part (21). The fixing screw passes through the seat frame (3) and limits the seat frame (3) from separating from the movable part (21). The lower end of the chair back frame (4) is rotatably connected to the mounting portion (23).
7. The folding chair according to claim 1, characterized in that: The front chair leg frame (1) and the rear chair leg frame (2) are further provided with an armrest frame (24). The upper ends of the front chair leg frame (1) and the rear chair leg frame (2) are rotatably connected to the armrest frame (24), and the rear end of the armrest frame (24) is rotatably arranged on the chair back frame (4).
8. The folding chair according to claim 7, characterized in that: The armrest frame (24) is provided with a first rotating member (25) and a second rotating member (26). The first rotating member (25) and the second rotating member (26) rotate coaxially. The first rotating member (25) includes a first rotating portion (27) and a first inserting portion (28). One end of the first inserting portion (28) can be inserted from the upper end of the front chair leg frame (1), and the other end is provided with a first abutting surface (29). The second rotating member (26) includes a second rotating portion (30) and a second inserting portion (31). One end of the second inserting portion (31) can be inserted from the rear The upper end of the chair leg frame (2) is inserted, and the other end is provided with a second abutting surface (32). The first rotating part (27) and the second rotating part (30) are also provided with an eccentric part (33). When the first rotating member (25) and the second rotating member (26) rotate and unfold, the eccentric part (33) on the first rotating part (27) abuts against the second abutting surface (32), and the eccentric part (33) on the second rotating part (30) abuts against the first abutting surface (29). At this time, the front chair leg frame (1) and the rear chair leg frame (2) are restricted from continuing to unfold.
9. The folding chair according to claim 8, characterized in that: An adjusting rod (34) is further provided in the handrail frame (24), an adjusting groove (35) is provided on the inner wall of the handrail frame (24), and an end portion of the adjusting rod (34) is arranged in the adjusting groove (35).