Rotating shaft type anti-pinch mechanism of touch pressing plate
By introducing a contact pressure plate rotary shaft anti-clip mechanism into the leg support component, the touch plate and elastic reset member trigger the press switch to control the electric actuator, which solves the problems of clamping and actuator damage when the leg support component is closed, and improves safety and comfort.
Patent Information
- Application Number
- CN202420922663.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-29
AI Technical Summary
The existing leg support parts are prone to clamping the pets or children at home during the closing process, and may cause damage to the actuator, and there are still safety hazards in the gaps of the flipped design.
Design a contact pressure plate rotary shaft anti-clip mechanism, including leg support bracket, touch pressure plate, flexible cushion layer and elastic resetting part. The touch pressure plate triggers the press switch when encountering an object, controls the electric actuator to stop working, prevent clamping, and Smooth activity and reset with elastic resets.
Effectively prevent objects from being pinched and overloaded and damaged by actuator, improve safety when leg support components are closed, and cover gaps with flexible cushions to enhance user safety and comfort.
Smart Images
Figure CN222129766U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a rotating shaft type anti-clamping mechanism for a touch-pressure plate. Background Art
[0002] At present, some types of massage chairs, leisure chairs, car chairs, etc. include leg rest components, which can be used to support the user's legs and improve the user's comfort when sitting or lying. The leg rest component usually adopts a retractable or flip-up design and can be folded when not in use. On some electrically driven chairs, the folding action of the leg rest component needs to be achieved by an actuator. This leads to the risk of pinching pets or children at home during the folding process of the leg rest component, or the actuator being damaged due to excessive load.
[0003] A Chinese utility model patent discloses an anti-pinch leg rest structure and a car seat with the structure (CN220314809U). In the patent scheme, an extension section is provided between the foam seat cushion and the leg rest foam. The extension section and the seat cushion foam are integrally formed. The extension section can block the gap between the leg rest foam and the seat cushion foam, thereby preventing the user's limbs from being pinched in the gap and improving safety during use.
[0004] The above patent discloses a leg rest component with a flip-up design, which can prevent the user from being pinched when the leg rest is folded. However, since the leg rest is folded in a flip-up manner, there is also a gap between the back side and the front side of the chair body. When pets, children or larger objects in the home enter the gap and the leg rest happens to be folded, these pets, children and other objects may be pinched or damaged, and the actuator may also be damaged. Summary of the invention
[0005] The utility model provides a leg rest anti-clip device which can prevent objects from being clamped or actuators from being overloaded and damaged when objects are present in the gap between the back side of the leg rest and the front side of the chair body when the leg rest is folded.
[0006] The utility model discloses a touch plate pivot type anti-pinch mechanism, comprising a leg rest component, wherein the leg rest component comprises a leg rest bracket, a touch plate, the touch plate is movably connected to the lower end of the leg rest bracket, the touch plate can move in a direction close to or away from the leg rest bracket, a limiting mechanism for limiting the movable range of the touch plate is arranged between the touch plate and the leg rest bracket, the upper end of the leg rest bracket is covered with a flexible cushion layer, the flexible cushion layer can be made of sponge material, which is more comfortable when supporting the legs, an elastic reset member is arranged between the leg rest bracket and the touch plate, the elastic reset member is used to drive the touch plate to move and reset in a direction away from the leg rest bracket, and a press switch which can be triggered when the touch plate moves in the direction of the leg rest bracket is arranged on the leg rest bracket.
[0007] When the leg rest is driven by the electric actuator to flip in the folding direction, if there is an object in the gap between the back of the leg rest and the front of the chair body, the touch plate of the leg rest touches the object and is pushed by the object to move in the direction of the leg rest bracket, and the push switch is triggered. The controller controls the electric actuator to stop working, thereby preventing objects from being pinched (including pets, children and other living things), and preventing the electric actuator from being damaged due to overload, thereby improving the safety of the leg rest when folding. When the object leaves the gap, the touch plate moves in the direction away from the leg rest bracket under the action of the elastic reset member, and the push switch is reset. The controller can re-control the electric actuator to work, which is more convenient to use.
[0008] Furthermore, the leg support bracket is arranged at the lower front end of the flexible cushion layer, and the rear end of the flexible cushion layer constitutes a seat cushion. The rear end of the flexible cushion layer can also be used as a seat cushion. This design is not only simple in structure and convenient in processing, but also can cover the gap between the leg support bracket and the seat cushion bracket to prevent the user from being pinched when the leg support component is folded.
[0009] Furthermore, the rear end of the touch plate is rotatably connected to the lower end of the leg support bracket, and the push switch and the elastic reset member are arranged at a position corresponding to the front end of the touch plate, which can improve the triggering effect of the anti-pinch device and make the movement of the touch plate smoother and less prone to jamming.
[0010] Furthermore, the lower part of the flexible cushion layer is provided with an installation groove for the leg support bracket to be embedded and installed, the lower end of the leg support bracket is provided with a recess, the front end and both sides of the leg support bracket are surrounded by a U-shaped fixing plate, and the front side and both sides of the installation groove are surrounded by a U-shaped step portion that cooperates with the fixing plate to support and fix, which can improve the fixed installation effect of the flexible cushion layer and the leg support bracket, the touch plate is U-shaped, the two rear ends of the touch plate are rotatably connected to the fixing plate, the elastic reset member and the press switch are arranged between the front end of the touch plate and the fixing plate, and the structure is simple and compact. The recess at the lower end of the leg support bracket and the U-shaped structural design of the fixing plate and the touch plate can be used to embed the telescopic or folding component that drives the leg support component to move when the leg support component is flipped and folded, so that the overall structure of the folded chair is more compact.
[0011] Furthermore, the elastic reset member is a spring, the front end of the touch plate is provided with a spring positioning groove which cooperates with one end of the spring for insertion and positioning, and the fixed plate is provided with a spring positioning groove which cooperates with the other end of the spring for insertion and positioning, so as to ensure the reliable positioning of the spring and the stability of its force application direction.
[0012] Furthermore, a through hole is provided on the fixing plate, a slot is provided on the step portion, the main body of the push switch is inserted in the slot and fixed with the fixing plate, and the pressure rod of the push switch passes through the through hole and is pressed and matched with the touch pressure plate. The overall structure is compact and easy to install.
[0013] Furthermore, the limiting mechanism includes a through slot arranged on the fixed plate, a support rod arranged on the touch pressure plate, and a limiting block. The support rod is movably arranged in cooperation with the through slot, and the limiting block is arranged at the end of the support rod and cooperates with the fixed plate to limit the support rod to prevent the support rod from escaping from the through slot. When the elastic reset part drives the touch pressure plate to reset, it can drive the limiting block to press and contact the fixed plate.
[0014] Furthermore, the elastic reset member and the push switch are both multiple (including two), and are evenly distributed laterally between the front end of the touch plate and the fixed plate, thereby improving the reset effect of the touch plate and the anti-pinch triggering effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a diagram of the use state of an embodiment of the utility model;
[0016] Figure 2 It is a structural diagram of an embodiment of the utility model;
[0017] Figure 3 The explosion of the utility model embodiment Figure 1 ;
[0018] Figure 4 The explosion of the utility model embodiment Figure 2 ;
[0019] Figure 5 It is a schematic diagram of the disassembly of the touch plate and the fixed plate of an embodiment of the utility model;
[0020] Figure 6 It is a schematic diagram of the coordination of the touch panel, spring and push switch according to an embodiment of the utility model. DETAILED DESCRIPTION
[0021] The utility model provides an embodiment of a touch plate rotating shaft anti-pinch mechanism, as shown in FIG. Figure 1-6 As shown, it includes a leg support component 1, which includes a leg support bracket 2 and a touch plate 3. The touch plate 3 is movably connected to the lower end of the leg support bracket 2, and the touch plate 3 can move towards or away from the leg support bracket 2. A limiting mechanism is provided between the touch plate 3 and the leg support bracket 2 to limit the movable range of the touch plate 3 to prevent the touch plate 3 from moving too far away from the leg support bracket 2. The upper end of the leg support bracket 2 is covered with a flexible cushion layer 4, which can be made of sponge material and is more comfortable when supporting the legs. An elastic reset member 5 is provided between the leg support bracket 2 and the touch plate 3, and the elastic reset member 5 is used to drive the touch plate 3 to move and reset in a direction away from the leg support bracket 2. The leg support bracket 2 is provided with a press switch 6 that can be triggered when the touch plate 3 moves towards the leg support bracket 2.
[0022] In this embodiment, the leg support anti-pinch device is applied to a massage chair, such as Figure 1 In other embodiments, the invention can also be applied to a leisure chair or a car seat with a leg support component having an electric telescopic or flip-folding function.
[0023] During the process of the leg rest part 1 flipping in the folding direction driven by the electric actuator of the chair, when there is an object in the gap between the back side of the leg rest part 1 and the front side of the chair body a, the touch plate 3 of the leg rest part 1 touches the object and is pushed by the object to move in the direction of the leg rest bracket 2, triggering the press switch 6 and transmitting an electrical signal to the controller, which controls the electric actuator to stop working, thereby preventing objects from being pinched (including pets, children and other living things) and preventing the electric actuator from being damaged due to overload, thereby improving the safety of the leg rest part 1 when folding. When the object leaves the gap, the touch plate 3 moves in the direction away from the leg rest bracket 2 under the action of the elastic reset member 5, and the press switch 6 is reset. The controller can re-control the electric actuator to work, so that the leg rest part 1 is folded and it is more convenient to use.
[0024] like Figures 2 to 4 As shown, the leg support bracket 2 is arranged at the lower front end of the flexible pad layer 4, and the rear end of the flexible pad layer 4 constitutes a seat cushion 41. Figure 1 The rear end of the flexible cushion layer 4 can be used as a seat cushion at the same time. This design is not only simple in structure and easy to process, but also can cover the gap between the leg support bracket 2 and the seat cushion bracket to prevent the user from being pinched when the leg support component 1 is folded.
[0025] The rear end of the touch plate 3 is rotatably connected to the lower end of the leg support bracket 2, and the push switch 6 and the elastic reset member 5 are arranged at a position corresponding to the front end of the touch plate 3, which can improve the triggering effect of the anti-pinch device and make the movement of the touch plate 3 smoother and less prone to jamming.
[0026] The lower part of the flexible cushion layer 4 is provided with an installation groove 42 for the leg support bracket 2 to be embedded and installed, the lower end of the leg support bracket 2 is provided with a recess 21, the recess 21 of the leg support bracket 2 is provided with openings (21a, 21b) at the lower end and rear end of the leg support bracket 2, the front end and both sides of the leg support bracket 2 are surrounded by a U-shaped fixing plate, the fixing plate includes a base plate 221 integrally formed with the leg support bracket 2, and a positioning plate 222 fixedly installed on the base plate 221, and the front side and both sides of the installation groove 42 are surrounded by a fixing plate that cooperates with the fixing plate to support and fix The U-shaped step portion 43 can improve the fixing and installation effect of the flexible cushion layer 4 and the leg support bracket 2. The touch plate 3 is U-shaped, and the two rear ends of the touch plate 3 are rotatably connected to the positioning plate 222 of the fixed plate. Specifically, the two rear ends of the touch plate 3 are provided with a rotating connection groove 31, and the positioning plate 222 of the fixed plate is correspondingly provided with a rotating connection seat 223 pivotally connected with the rotating connection groove 31. The elastic reset member 5 and the push switch 6 are arranged between the front end of the touch plate 3 and the fixed plate, and the structure is simple and compact. The recessed portion 21 at the lower end of the leg support bracket 2 and the U-shaped structural design of the fixed plate and the touch plate 3 can be used to embed the telescopic or folding component that drives the leg support component 1 to move when the leg support component 1 is flipped and folded, so that the overall structure of the folded chair is more compact.
[0027] The elastic reset member 5 is a spring, and the front end of the touch plate 3 is provided with a spring positioning groove 32 for inserting and positioning with one end of the spring, and the positioning plate 222 of the fixed plate is provided with a spring positioning groove 224 for inserting and positioning with the other end of the spring, so as to ensure the reliable positioning of the spring and the stability of its force application direction.
[0028] Through holes 23 are correspondingly provided on the base plate 221 and the positioning plate 222 of the fixing plate, a slot 431 is provided on the step portion 43, the main body of the push switch 6 is inserted in the slot 431 and fixed with the fixing plate, and the pressure rod 61 of the push switch 6 passes through the through hole 23 and is pressed and matched with the touch plate 3, the overall structure is compact and easy to install.
[0029] The limiting mechanism includes a through slot 225 arranged on the positioning plate 222 of the fixed plate, a support rod 331 and a limiting block 332 arranged on the touch plate 3. The support rod 331 is movably arranged in cooperation with the through slot 225. The limiting block 332 is arranged at the end of the support rod 331 and cooperates with the positioning plate 222 of the fixed plate to prevent the support rod 331 from escaping from the through slot 225. When the elastic reset member 5 drives the touch plate 3 to reset, it can drive the limiting block 332 to press and contact the positioning plate 222 of the fixed plate.
[0030] The elastic reset member 5 and the push switch 6 are both multiple (including two) and are evenly distributed laterally between the front end of the touch plate 3 and the fixed plate, thereby improving the reset effect of the touch plate 3 and the anti-pinch triggering effect and reducing the error rate.
[0031] The above embodiment is only one of the preferred specific embodiments of the present invention. Common changes and substitutions made by those skilled in the art within the technical solution of the present invention are all included in the protection scope of the present invention.
Claims
1. A touch plate rotating shaft anti-pinch mechanism, comprising a leg support component, characterized in that: The leg rest component includes a leg rest bracket and a touch plate, which is movably connected to the lower end of the leg rest bracket. The touch plate can move toward or away from the leg rest bracket. A limiting mechanism for limiting the movable range of the touch plate is arranged between the touch plate and the leg rest bracket. The upper end of the leg rest bracket is covered with a flexible pad layer. An elastic reset member is arranged between the leg rest bracket and the touch plate, and the elastic reset member is used to drive the touch plate to move and reset in a direction away from the leg rest bracket. A press switch is arranged on the leg rest bracket, which can be triggered when the touch plate moves toward the leg rest bracket.
2. The touch plate rotating shaft anti-pinch mechanism according to claim 1, characterized in that: The leg support bracket is arranged at the lower front end of the flexible cushion layer, and the rear end of the flexible cushion layer constitutes a seat cushion.
3. The touch plate rotating shaft anti-pinch mechanism according to claim 1, characterized in that: The rear end of the touch-pressure plate is rotatably connected to the lower end of the leg support bracket, and the pressing switch and the elastic reset member are arranged at positions corresponding to the front end of the touch-pressure plate.
4. The touch plate rotating shaft anti-pinch mechanism according to claim 3, characterized in that: The lower part of the flexible cushion layer is provided with an installation groove for the leg support bracket to be embedded and installed, the lower end of the leg support bracket is provided with a recess, the front end and both sides of the leg support bracket are surrounded by a U-shaped fixing plate, the front side and both sides of the installation groove are surrounded by a U-shaped step portion that cooperates with the fixing plate for support and fixation, the touch plate is U-shaped, the two rear ends of the touch plate are rotatably connected to the fixing plate, and the elastic reset member and the press switch are arranged between the front end of the touch plate and the fixing plate.
5. The touch plate rotating shaft anti-pinch mechanism according to claim 4, characterized in that: The elastic return member is a spring, the front end of the touch plate is provided with a spring positioning groove which cooperates with one end of the spring for insertion and positioning, and the fixing plate is provided with a spring positioning groove which cooperates with the other end of the spring for insertion and positioning.
6. The touch plate rotating shaft anti-pinch mechanism according to claim 4, characterized in that: The fixing plate is provided with a through hole, the step portion is provided with a slot, the main body of the push switch is inserted into the slot and fixed with the fixing plate, and the pressure rod of the push switch passes through the through hole and is pressed and matched with the touch plate.
7. The touch plate rotating shaft anti-pinch mechanism according to claim 4, characterized in that: The limiting mechanism includes a through slot arranged on the fixing plate, a support rod arranged on the touch-pressure plate, and a limiting block. The support rod is movably arranged in cooperation with the through slot, and the limiting block is arranged at the end of the support rod and cooperates with the fixing plate to limit the support rod to prevent the support rod from escaping from the through slot.
8. The touch plate rotating shaft anti-pinch mechanism according to claim 4, characterized in that: The elastic reset member and the pressing switch are both multiple and are evenly distributed laterally and arranged between the front end of the touch-pressure plate and the fixing plate.