Turnover reset device for seat armrest

Abstract

A turnover reset device for a seat armrest comprises a fixing piece and a turnover piece rotationally connected to the fixing piece, a plurality of limiting teeth arranged in the circumferential direction of the fixing piece are arranged on the outer wall of the fixing piece, a limiting rod connected with the limiting teeth in a clamped mode is arranged on the turnover piece, and a reset part for relieving limitation of the limiting rod is arranged at the top of the fixing piece. A sliding groove used for the limiting rod to move is formed in the overturning piece, an unlocking groove matched with the reset part is formed in the sliding groove, and the limiting rod moves into the unlocking groove to achieve unlocking. An elastic structure which is connected with the overturning piece and is used for automatically resetting the overturning piece is arranged in the fixing piece; a resetting rod which is connected with the elastic structure and is used for driving the overturning piece to reset is arranged on the overturning piece; compared with the prior art, the overturning function of the handrail is achieved through few structures, the handrail can be automatically reset during overturning, the complexity of the handrail overturning structure is reduced, the frequency of faults is reduced, the structural cost is also reduced, meanwhile, assembling is easy and fast, and efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of seat armrest technology, specifically to a flip-and-reset device for seat armrests. Background Technology

[0002] A chair is a type of everyday furniture, a seat with a backrest and armrests. The structure of a chair generally includes: legs and a seat cushion connected to the legs, and a backrest support connected to the seat cushion or legs. The backrest support is equipped with a backrest and lumbar support, and the armrests are installed on the seat cushion.

[0003] Chinese Patent Application No. 202223566557.0 discloses a one-way flip-up self-locking mechanism for handrails. The disclosed one-way flip-up self-locking mechanism for handrails includes a mounting head, a gear disk at the top of the mounting head, a connector rotatably connected to one side of the mounting head, a handrail plate at the other end of the connector, a gear rotatably connected to the inner side of the connector, a torsion spring mounted on one side of the rotating shaft of the gear, the torsion spring acting in the connector, and the teeth on the sidewall of the gear meshing with the teeth on the gear disk. An arc-shaped washer is provided on one side of the gear disk. Chinese Patent Application No. 202321147577.6 discloses a one-way flip handrail. The disclosed one-way flip handrail includes a handrail and a support column. The lower end of the handrail is provided with a connecting shell. The connecting shell is provided with a one-way flip mechanism, and the connecting shell and the support column realize the one-way flip function through the one-way flip mechanism. The one-way flip mechanism includes a fixed shaft fixedly connected to the upper part of the support column and a limiting gear outside the fixed shaft. The limiting hole is provided with a limiting tooth block that cooperates with the limiting gear and is located between two protrusions. The two ends of the limiting tooth block are provided with spring plates, and the spring plates are respectively fixedly connected to the connecting plate. The limiting gear and the limiting tooth block are meshed and connected through the spring plates.

[0004] In the aforementioned prior art, the handrail flipping structure uses a mounting head with a gear disk and a connector. The connector has a gear, and a torsion spring is mounted on the rotating shaft of the gear. The torsion spring acts on the connector, and the handrail flips with the cooperation of multiple components. However, the existing handrail flipping structure is complex, and the flipping function can only be achieved with the close cooperation of each component. The higher the complexity of the structure, the more likely it is to fail. At the same time, the structure is costly and difficult to assemble. Utility Model Content

[0005] The present invention aims to overcome the defects in the prior art and provide a simple structure that enables the armrest to flip and automatically reset with minimal structural elements.

[0006] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a flip-and-reset device for a seat armrest, comprising a fixing member and a flip-and-reset member rotatably connected to the fixing member. The outer wall of the fixing member is provided with a plurality of limiting teeth arranged along the circumferential direction of the fixing member. The flip-and-reset member is provided with a limiting rod that engages with the limiting teeth. The top of the fixing member is provided with a reset part for releasing the limitation rod. The flip-and-reset member is provided with a sliding groove for the movement of the limiting rod. The sliding groove is provided with an unlocking groove that cooperates with the reset part. The limiting rod moves into the unlocking groove to unlock. The fixing member is provided with an elastic structure connected to the flip-and-reset member for automatic reset of the flip-and-reset member. The flip-and-reset member is provided with a reset rod connected to the elastic structure for driving the flip-and-reset member to reset.

[0007] As a preferred embodiment of this utility model, the outer wall of the fixing member is an arc-shaped structure, and the flipping member is provided with an arc-shaped part that is adapted to the arc-shaped structure.

[0008] As a preferred embodiment of this utility model, the bottom of the arc-shaped part is provided with a flip groove that is adapted to the outer wall of the fixing member.

[0009] As a preferred embodiment of this utility model, the sliding groove is disposed on both sides of the flipping part, and the unlocking groove is disposed at one end near the outer wall of the flipping part.

[0010] As a preferred embodiment of this utility model, the flipping component is provided with springs on both sides for tightening the limiting rod and controlling the distance the limiting rod moves in the slide groove, and the flipping component is provided with a fixing rod for fixing the spring.

[0011] As a preferred embodiment of this utility model, the elastic structure is a coil spring disposed within a fixing member. The fixing member is provided with a fixing shaft for connecting the coil spring, and a snap-fit ​​groove is formed on the fixing shaft. The coil spring is sleeved on the fixing shaft, and the inner end of the coil spring is provided with a snap-fit ​​part connected to the snap-fit ​​groove.

[0012] As a preferred embodiment of this utility model, the outer end of the coil spring is provided with a connecting groove for connecting the reset rod, and the fixing member is provided with an arc-shaped groove for moving the reset rod.

[0013] In a preferred embodiment of this utility model, when the reset rod moves to the bottom of the arc-shaped groove, the coil spring is in a pre-tightened state.

[0014] As a preferred embodiment of this utility model, the fixed shaft is provided with a central hole arranged along the axial direction of the fixed shaft, the flipping part is provided with a connecting hole corresponding to the central hole, and a rotating shaft connected to the central hole is provided in the connecting hole.

[0015] As a preferred embodiment of this utility model, the bottom of the fixing member is provided with a base, and the connection end between the base and the fixing member is an arc-shaped structure that is adapted to the arc-shaped part of the flipping member.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. By setting limiting teeth on the fixing component and setting limiting rods on the flipping component that cooperate with the limiting teeth, the flipping limit of the handrail is realized. The limiting rods are unlocked by the action of the reset part and the unlocking groove. At the same time, an elastic structure for automatic reset of the flipping component is set in the fixing component. The handrail flipping reset is realized by the cooperation of the reset rod on the flipping component and the elastic structure. The flipping function of the handrail is realized with a small number of structures, and the automatic reset of the handrail flipping is possible. This reduces the complexity of the handrail flipping structure, reduces the frequency of failure, and reduces structural costs. At the same time, the assembly is simple and quick, improving efficiency.

[0018] 2. Furthermore, a reset part is provided at the top of the fixing part. When the limiting rod moves to the reset part, the limiting rod moves along the slide groove into the unlocking groove under the obstruction of the reset part, thereby causing the limiting rod to disengage from the limiting tooth, releasing the restriction on the limiting rod, and realizing the flipping reset of the handrail under the action of the coil spring. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a structural schematic diagram of the fastener of this utility model.

[0021] Reference numerals: Fixing component 1, limiting tooth 101, reset part 1011, top rod part 1012, arc groove 102, fixing shaft 103, snap-fit ​​groove 1031, center hole 1032, coil spring 104, snap-fit ​​part 1041, connecting groove 1042, flipping component 2, arc part 201, flipping groove 2011, sliding groove 202, unlocking groove 2021, limiting rod 203, reset rod 204, connecting hole 205, rotating shaft 2051, mounting part 206, spring 207, fixing rod 2071, base 3. Detailed Implementation

[0022] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0023] like Figures 1-2As shown, a flip-and-reset device for a seat armrest includes a fixing member 1 and a flip-and-reset member 2 rotatably connected to the fixing member 1. The outer wall of the fixing member 1 is provided with a plurality of limiting teeth 101 arranged along the circumferential direction of the fixing member 1. The flip-and-reset member 2 is provided with a limiting rod 203 that engages with the limiting teeth 101. The top of the fixing member 1 is provided with a reset part 1011 for releasing the limiting rod 203. The flip-and-reset member 2 is provided with a sliding groove 202 for the movement of the limiting rod 203. The sliding groove 202 is provided with an unlocking groove 2021 that cooperates with the reset part 1011. The limiting rod 203 moves into the unlocking groove 2021 to unlock. The fixing member 1 is provided with an elastic structure connected to the flip-and-reset member 2 for automatic reset of the flip-and-reset member 2. The flip-and-reset member 2 is provided with a reset rod 204 connected to the elastic structure for driving the flip-and-reset member 2 to reset.

[0024] Furthermore, one end of the flipper 2 is sleeved on the fixing member 1, and the flipper 2 is rotatably mounted on the fixing member 1. A plurality of limiting teeth 101 are arranged along the circumferential direction of the fixing member 1 on the outer wall of the fixing member 1, and the plurality of limiting teeth 101 are located at the upper left corner of the fixing member 1, occupying one-quarter of the outer wall of the fixing member 1. Figure 2 As shown, a reset part 1011 is provided at the top of the fixing part 1. The reset part 1011 is located at the top of the limiting tooth 101. A limiting rod 203 is engaged in the limiting tooth 101. The limiting rod 203 is connected to the flipping part 2. By flipping the handrail upward, the limiting rod 203 moves on several limiting teeth 101 and stops flipping. The limiting rod 203 is engaged in the corresponding limiting tooth 101, thereby fixing the flipping angle of the handrail. When the flipping limit is to be released, the handrail is lifted upward. This causes the limiting rod 203 to abut against the reset part 1011, and the handrail continues to rise. As a result, the limiting rod 203 disengages from the limiting tooth 101 under the action of the reset part 1011, and moves from one end of the slide groove 202 near the center of the flipping member 2 into the unlocking groove 2021 at the other end, thereby releasing the limitation of the limiting tooth 101 on the limiting rod 203. In addition, the elastic structure provides a reset torque for the automatic reset of the flipping member 2, and the reset rod 204 drives the flipping member 2 to reset.

[0025] By setting a limiting tooth 101 on the fixing part 1 and a limiting rod 203 on the flipping part 2 that cooperates with the limiting tooth 101, the flipping limit of the handrail is realized. The limiting rod 203 is unlocked by the action of the reset part 1011 and the unlocking groove 2021. At the same time, an elastic structure for automatic reset of the flipping part 2 is set in the fixing part 1. The handrail flipping reset is realized by the cooperation of the reset rod 204 on the flipping part 2 and the elastic structure. The flipping function of the handrail is realized with a small number of structures, and the automatic reset of the handrail flipping is possible. This reduces the complexity of the handrail flipping structure, reduces the frequency of failure, and reduces the structural cost. At the same time, the assembly is simple and quick, and the efficiency is improved.

[0026] The outer wall of the fixing member 1 is an arc-shaped structure, and the flipping member 2 is provided with an arc-shaped part 201 that is adapted to the arc-shaped structure. Furthermore, the arc-shaped part 201 is provided at the end of the flipping member 2, and the interior of the arc-shaped part 201 is a hollow structure. That is, the arc-shaped part 201 is sleeved on the fixing member 1. The arc-shaped structure facilitates the flipping member 2 to flip on the fixing member 1.

[0027] The bottom of the arc-shaped part 201 is provided with a flip groove 2011 that is adapted to the outer wall of the fixing member 1. Furthermore, the flip groove 2011 is provided on the outer wall of the arc-shaped part 201 and is provided along the axial direction of the arc-shaped part 201. Through the provided flip groove 2011, the flip member 2 can rotate smoothly on the fixing member 1 without flipping and getting stuck.

[0028] The sliding groove 202 is provided on both sides of the flipping part 2, and the unlocking groove 2021 is provided at one end near the outer wall of the flipping part 2. Furthermore, the sliding groove 202 is provided on the side of the arc-shaped part 201 and is provided in the radial direction of the arc-shaped part 201. The limiting rod 203 is slidably provided in the sliding groove 202. By lifting the flipping part 2, the limiting rod 203 is driven to move on several limiting teeth 101. The unlocking groove 2021 is located on one end of the sliding groove 202 near the outer wall of the arc-shaped part 201, and the unlocking groove 2021 is provided on the lower side of the sliding groove 202. When the limiting rod 203 moves upward along the circumferential direction of the fixing part 1 and abuts against the reset part 1011, it disengages from the limiting teeth 101 and moves into the unlocking groove 2021, thereby releasing the limitation of the limiting teeth 101 on the limiting rod 203, and thus enabling the flipping part 2 to be reset.

[0029] The flipping component 2 has springs 207 on both sides for tightening the limiting rod 203 and controlling the movement distance of the limiting rod 203 in the slide groove 202. The flipping component 2 has a fixing rod 2071 for fixing the springs 207. Furthermore, one end of the spring 207 is connected to the end of the limiting rod 203, and the other end is connected to the fixing rod 2071. The fixing rod 2071 is located on the side of the flipping component 2. Springs 207 are connected to both ends of the limiting rod 203. The limiting rod 203 is tightened by the springs 207 at both ends. The tension of 03 ensures that during the handrail flipping and lifting process, the limiting rod 203 will not disengage from the limiting teeth 101 when it moves on the limiting teeth 101, thus ensuring the limiting and fixing of the handrail after flipping; and when the limiting rod 203 is released and moves into the unlocking groove 2021 under the action of the reset part 1011, the tension of the spring 207 ensures that the limiting rod 203 will not disengage from the unlocking groove 2021, thus ensuring that the limiting rod 203 will not interfere with the automatic reset of the flipping part 2.

[0030] Additionally, a push rod portion 1012 is provided at the bottom of the limiting tooth 101 for disengaging the limiting rod 203 from the unlocking groove 2021. When the flipping component 2 is reset, the limiting rod 203 abuts against the push rod portion 1012. At this time, under the action of the push rod portion 1012, the limiting rod 203 is pushed out of the unlocking groove 2021, thereby disengaging the limiting rod 203 from the unlocking groove 2021. At the same time, under the action of the spring 207, the limiting rod 203 is pulled to the end of the slide groove 202 away from the unlocking groove 2021, thereby causing the limiting rod 203 to return to the limiting tooth 101, thus achieving the limiting and fixing of the flipping component 2 for flipping and lifting.

[0031] The elastic structure is a coil spring 104 disposed within the fixing member 1. The fixing member 1 is provided with a fixing shaft 103 for connecting the coil spring 104. A snap-fit ​​groove 1031 is formed on the fixing shaft 103. The coil spring 104 is sleeved on the fixing shaft 103, and the inner end of the coil spring 104 is provided with a snap-fit ​​part 1041 connected to the snap-fit ​​groove 1031. Furthermore, the fixing shaft 103 is arranged along the vertical direction of the fixing member 1 and is located in the middle of the fixing member 1. The coil spring 104 is sleeved on the fixing shaft 103, and the snap-fit ​​groove 1031 is located on the upper side of the fixing shaft 103. The snap-fit ​​part 1041 is provided at the inner end of the coil spring 104. Specifically, the inner end of the coil spring is the end of the inner ring of the coil spring 104. The snap-fit ​​part 1041 snaps into the snap-fit ​​groove 1031, thereby fixing the coil spring 104.

[0032] The outer end of the coil spring 104 is provided with a connecting groove 1042 for connecting the reset rod 204. The fixing member 1 is provided with an arc-shaped groove 102 for moving the reset rod 204. Furthermore, the outer end of the coil spring 104 is the end of the outer ring of the coil spring 104. The connecting groove 1042 is formed by bending the outer end of the coil spring 104, and the bending direction is towards the direction of the limiting tooth 101. The reset rod 204 passes through the connecting groove 1042, and the fixing member 1 is provided with an arc-shaped groove 102, and the reset rod 204 is located in the arc-shaped groove 102.

[0033] When the reset rod 204 moves to the bottom of the arc groove 102, the coil spring 104 is in a pre-tightened state. Specifically, when the flipping part 2 is lifted, the reset rod 204 moves downward in the arc groove 102 and drives the coil spring 104 into a pre-tightened state. When the limit rod 203 enters the unlocking groove 2021, the reset rod 204 moves upward along the arc groove 102 under the action of the reset torque of the coil spring 104, thereby driving the flipping part 2 to reset.

[0034] The fixed shaft 103 is provided with a central hole 1032 arranged along the axial direction of the fixed shaft 103. The flipping part 2 is provided with a connecting hole 205 corresponding to the central hole 1032. A rotating shaft 2051 connecting the central hole 1032 is provided in the connecting hole 205. Furthermore, the rotating shaft 2051 is connected to the central hole 1032 and the connecting hole 205, thereby realizing the rotational connection between the flipping part 2 and the fixed part 1.

[0035] The bottom of the fixing part 1 is provided with a base 3. The connection end between the base 3 and the fixing part 1 is an arc-shaped structure that is adapted to the arc-shaped part 201 of the flipping part 2. The base 3 is used to connect the support column of the handrail. By setting the top of the base 3 into an arc-shaped structure, the flipping part 2 can be easily flipped.

[0036] In addition, a mounting part 206 is connected to the curved part 201. The mounting part 206 is integrally formed with the curved part 201, and the handrail panel is mounted on the mounting part 206.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0038] Although this document frequently uses reference numerals from the accompanying drawings, such as: fixing part 1, limiting tooth 101, reset part 1011, top rod part 1012, arc groove 102, fixing shaft 103, snap-fit ​​groove 1031, center hole 1032, coil spring 104, snap-fit ​​part 1041, connecting groove 1042, flipping part 2, arc part 201, flipping groove 2011, sliding groove 202, unlocking groove 2021, limiting rod 203, reset rod 204, connecting hole 205, rotating shaft 2051, mounting part 206, spring 207, fixing rod 2071, and base 3, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A flip-and-reset device for a seat armrest, comprising a fixing member (1) and a flipping member (2) rotatably connected to the fixing member (1), characterized in that, The outer wall of the fixing member (1) is provided with a plurality of limiting teeth (101) arranged along the circumferential direction of the fixing member (1). The flipping member (2) is provided with a limiting rod (203) that engages with the limiting teeth (101). The top of the fixing member (1) is provided with a reset part (1011) to release the limitation of the limiting rod (203). The flipping member (2) is provided with a sliding groove (202) for the movement of the limiting rod (203). The sliding groove (202) is provided with an unlocking groove (2021) that cooperates with the reset part (1011). The limiting rod (203) moves into the unlocking groove (2021) to unlock. The fixing member (1) is provided with an elastic structure connected to the flipping member (2) for automatic reset of the flipping member (2). The flipping member (2) is provided with a reset rod (204) connected to the elastic structure for driving the flipping member (2) to reset.

2. The flip-and-reset device for a seat armrest according to claim 1, characterized in that, The outer wall of the fixing member (1) is an arc-shaped structure, and the flipping member (2) is provided with an arc-shaped part (201) that is adapted to the arc-shaped structure.

3. A flip-and-reset device for a seat armrest according to claim 2, characterized in that, The bottom of the arc-shaped part (201) is provided with a flip groove (2011) that is adapted to the outer wall of the fixing member (1).

4. A flip-and-reset device for a seat armrest according to claim 1, characterized in that, The slide groove (202) is provided on both sides of the flipping part (2), and the unlocking groove (2021) is provided at one end near the outer wall of the flipping part (2).

5. A flip-and-reset device for a seat armrest according to claim 4, characterized in that, The flipping component (2) is provided with springs (207) on both sides for tightening the limiting rod (203) and controlling the distance the limiting rod (203) moves in the slide groove (202). The flipping component (2) is provided with fixing rods (2071) for fixing the springs (207).

6. A flip-and-reset device for a seat armrest according to any one of claims 1-5, characterized in that, The elastic structure is a coil spring (104) disposed in the fixing member (1). The fixing member (1) is provided with a fixing shaft (103) for connecting the coil spring (104). A snap-fit ​​groove (1031) is formed on the fixing shaft (103). The coil spring (104) is sleeved on the fixing shaft (103), and the inner end of the coil spring (104) is provided with a snap-fit ​​part (1041) connected to the snap-fit ​​groove (1031).

7. A flip-and-reset device for a seat armrest according to claim 6, characterized in that, The outer end of the coil spring (104) is provided with a connecting groove (1042) for connecting the reset rod (204), and the fixing member (1) is provided with an arc-shaped groove (102) for moving the reset rod (204).

8. A flip-and-reset device for a seat armrest according to claim 7, characterized in that, When the reset rod (204) moves to the bottom of the arc groove (102), the coil spring (104) is in a pre-tightened state.

9. A flip-and-reset device for a seat armrest according to claim 6, characterized in that, The fixed shaft (103) is provided with a central hole (1032) arranged along the axial direction of the fixed shaft (103), and the flipping part (2) is provided with a connecting hole (205) corresponding to the central hole (1032), and a rotating shaft (2051) connecting the central hole (1032) is provided in the connecting hole (205).

10. A flip-and-reset device for a seat armrest according to claim 2, characterized in that, The bottom of the fixing member (1) is provided with a base (3), and the connection end between the base (3) and the fixing member (1) is an arc-shaped structure that is adapted to the arc-shaped part (201) of the flipping member (2).

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