Anti-pinch structure

Abstract

The utility model relates to a prevent clamping structure technical field discloses a prevent clamping structure, include: fixed seat, movable board and protection subassembly. Fixed seat, the lateral surface of fixed seat is provided with recess, and recess has the open slot towards outside, movable board sets up at the top of open slot, and movable board reciprocatingly removes along the extension direction of recess, protection subassembly includes electrically connected piece, guide post, board and first elastic part, electrically connected piece sets up at the bottom of recess, and carries out electric connection with movable board, guide post is movably arranged in the middle part of electrically connected piece relative to fixed seat, board is accommodated in open slot, and is fixed at the top of guide post, first elastic part is sleeved in the middle part of guide post, and its one end abuts on board bottom, the other end abuts on recess inner wall, wherein, when the external force acts on board, board compresses first elastic part and moves downwardly by guide post direction, makes board and electrically connected piece contact, to trigger electric signal to control movable board stop running.

Description

Technical Field

[0001] This utility model relates to the field of anti-pinch structure technology, specifically an anti-pinch structure. Background Technology

[0002] Among devices involving moving parts, such as height-adjustable desks, industrial automation equipment, and smart furniture, the risk of pinching injuries is a prominent safety concern. Taking height-adjustable desks as an example, during the raising and lowering process, if the user operates improperly or is not focused, limbs, clothing, or even surrounding objects can easily become caught in the gap between the moving plate and the fixed structure, leading to accidental injury. Therefore, to improve safety, anti-pinch devices are usually installed.

[0003] However, existing anti-pinch structures still have some problems: traditional anti-pinch structures rely on electronic components such as infrared sensors and pressure sensors, which are expensive and increase the overall cost of the structure.

[0004] Therefore, there is an urgent need for an anti-pinch structure to solve the above problems. Utility Model Content

[0005] Based on the above, the purpose of this utility model is to provide an anti-pinch structure to solve the problem of reducing the cost of anti-pinch structures.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] An anti-pinch structure, comprising:

[0008] A fixing base, wherein a groove is provided on the side of the fixing base, and the groove has an open slot facing outward;

[0009] A movable plate is disposed at the top of the open slot, and the movable plate reciprocates along the extension direction of the groove;

[0010] The protective assembly includes an electrical connection piece, a guide post, a plate, and a first elastic element;

[0011] The electrical connector is disposed at the bottom of the groove, and the guide post is movably inserted through the middle of the electrical connector relative to the fixing seat;

[0012] The plate is accommodated within the open slot and fixed to the top of the guide post;

[0013] The first elastic element is sleeved in the middle of the guide post, with one end abutting against the bottom of the plate and the other end abutting against the inner wall of the groove;

[0014] When an external force is applied to the plate, the plate compresses the first elastic element and is guided downward by the guide post, causing the plate to contact the electrical connection piece, thereby triggering an electrical signal to control the movable plate to stop operating.

[0015] As a preferred embodiment of the anti-pinch structure, the groove is provided with a positioning member and a second elastic member. The positioning member is positioned at the bottom of the groove, the electrical connecting piece is movably disposed in the middle of the positioning member, the second elastic member is sleeved in the middle of the positioning member, the top of the second elastic member abuts against the bottom of the electrical connecting piece, and the bottom of the second elastic member abuts against the inner bottom surface of the groove.

[0016] As a preferred embodiment of the anti-pinch structure, the bottom of the groove is provided with a movable groove, and the guide post is slidably inserted into the movable groove.

[0017] As a preferred embodiment of the anti-pinch structure, the plate body is fixedly connected to the end of the guide post as a contact end. The contact end has a through hole that expands in a stepped manner from top to bottom. The guide post is fixed to the upper end of the through hole. The first elastic element is sleeved on the guide post, and the first elastic element can partially extend into and abut against the stepped inner wall of the through hole. The electrical connection piece is directly below the through hole. When the plate body is pressed down by an external force, the bottom surface of the through hole contacts the electrical connection piece, thereby triggering a control signal to stop the moving plate.

[0018] As a preferred embodiment of the anti-pinch structure, the groove is fixedly connected to a carrier, the carrier has a through hole that decreases in size from top to bottom in a stepped manner, the guide post passes through the through hole, the electrical connection piece is sleeved on the outer ring of the carrier, the first elastic element is sleeved on the guide post, and the first elastic element can partially extend into and abut against the stepped inner wall of the through hole.

[0019] As a preferred embodiment of the anti-pinch structure, the guide post is provided with a gasket at one end opposite to the plate, and the gasket is used to provide a buffering force when the plate is reset.

[0020] As a preferred embodiment of the anti-pinch structure, the protective component is provided in at least six sets, and the six sets of the protective component are symmetrically arranged in the groove.

[0021] As a preferred embodiment of the anti-pinch structure, it further includes a lifting assembly connected between the movable plate and the fixed base, the lifting assembly being used to lift the movable plate.

[0022] As a preferred embodiment of the anti-pinch structure, the lifting assembly includes a drive source and a protective cover plate. The protective cover plate is positioned at the bottom of the fixed base, the drive source is disposed inside the protective cover plate, and the movable plate is installed at the output end of the drive source.

[0023] The beneficial effects of this utility model are as follows: By setting a groove with an open slot on the side of the fixed base, and setting a protective assembly consisting of a guide post, a plate, and a first elastic element inside the groove, intelligent control of the moving plate's operating status is achieved. When the plate is subjected to external force, it can compress the elastic element and move downwards, thereby contacting the electrical connection piece and triggering a control signal to stop the moving plate's operation in a timely manner, effectively avoiding the risk of pinching injuries. Moreover, it is highly responsive and can react quickly in the event of accidental contact or pinching risks, effectively preventing pinching accidents. At the same time, the protective assembly is integrated inside the groove, resulting in a compact overall structure that does not affect the external aesthetics and is easy to assemble and maintain, demonstrating good practicality and market application prospects. Attached Figure Description

[0024] Figure 1 A schematic diagram of an anti-pinch structure installed on a lifting table according to this utility model;

[0025] Figure 2 This is a schematic diagram of the overall structure of an anti-pinch structure provided by this utility model;

[0026] Figure 3 for Figure 2 Cross-sectional view;

[0027] Figure 4 for Figure 3 A magnified view of part A in the diagram;

[0028] Figure 5 This is a schematic diagram of the overall structure of an anti-pinch structure provided by this utility model, with the protective cover removed.

[0029] The following are the labeling elements in the figure:

[0030] 1. Fixed base; 2. Movable plate;

[0031] 3. Protective components; 301. Electrical connecting piece; 302. Guide post; 303. Plate; 304. First elastic element;

[0032] 4. Positioning element; 5. Second elastic element; 6. Gasket; 7. Movable groove; 8. Contact end; 9. Through hole; 10. Carrier; 11. Through hole;

[0033] 13. Lifting assembly; 131. Drive source; 132. Protective cover;

[0034] 14. Groove; 15. Open slot. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0036] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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.

[0039] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no specific meaning.

[0040] In one embodiment of this utility model, such as Figure 2-5As shown, an anti-pinch structure is provided, including: a fixed base 1, a movable plate 2, and a protective component 3. The fixed base 1 has a groove 14 on its side, the groove 14 having an open slot 15 facing outwards; the movable plate 2 is disposed at the top of the open slot 15, and the movable plate 2 reciprocates along the extending direction of the groove 14; the protective component 3 includes an electrical connecting piece 301, a guide post 302, a plate body 303, and a first elastic member 304; the electrical connecting piece 301 is disposed at the bottom of the groove 14; the guide post 302 is movably inserted through the middle of the electrical connecting piece 301 relative to the fixed base 1; the plate body 303... 03 (conductive material) is accommodated in the open slot 15 and fixed to the top of the guide post 302; the first elastic member 304 is sleeved in the middle of the guide post 302, with one end abutting the bottom of the plate 303 and the other end abutting the inner wall of the groove 14; wherein, when an external force is applied to the plate 303, the plate 303 compresses the first elastic member 304 and is guided downward by the guide post 302, so that the plate 303 contacts the electrical connection piece 301, thereby triggering an electrical signal to control the movable plate 2 to stop running.

[0041] This utility model provides an anti-pinch structure. By providing a groove 14 with an open slot 15 on the side of the fixed base 1, and installing a protective assembly 3 within the groove 14, consisting of a guide post 302, a plate 303, and a first elastic element 304, intelligent control of the moving plate 2's operating state is achieved. When the plate 303 is subjected to external force, it can compress the elastic element and move downwards, thereby contacting the electrical connection piece 301 and triggering a control signal to promptly stop the movement of the moving plate 2, effectively avoiding the risk of pinching injuries. Furthermore, it is highly responsive, reacting quickly to accidental contact or pinching risks, effectively preventing pinching accidents. Simultaneously, the protective assembly 3 is integrated inside the groove 14, resulting in a compact overall structure that does not affect external aesthetics and is easy to assemble and maintain, demonstrating good practicality and market application prospects.

[0042] This anti-pinch structure also includes a lifting assembly 13 connected between the movable plate 2 and the fixed base 1. The lifting assembly 13 is used to lift the movable plate 2. By setting the lifting assembly 13, the movable plate 2 can be lifted and lowered smoothly, improving the stability and controllability of the overall structure operation.

[0043] Specifically, the lifting assembly 13 includes a drive source 131 (such as a cylinder) and a protective cover 132. The protective cover 132 is positioned at the bottom of the fixed base 1, the drive source 131 is disposed inside the protective cover 132, and the movable plate 2 is installed at the output end of the drive source 131. By setting the drive source 131 and the protective cover 132, not only can precise lifting control of the movable plate 2 be achieved, but also the internal components are effectively protected from external interference, enhancing the stability and durability of the equipment operation.

[0044] Preferably, the protective component 3 has at least six sets, and the six sets of protective components 3 are symmetrically arranged in the groove 14, which effectively improves the structural stability and ensures the reliability of force triggering.

[0045] Preferably, the groove 14 is provided with a positioning element 4 and a second elastic element 5. The positioning element 4 is positioned at the bottom of the groove 14, and the electrical connecting piece 301 is movably disposed in the middle of the positioning element 4. The second elastic element 5 is sleeved in the middle of the positioning element 4, with the top of the second elastic element 5 abutting against the bottom of the electrical connecting piece 301 and the bottom of the second elastic element 5 abutting against the inner bottom surface of the groove 14. By providing the positioning element 4 and the second elastic element 5 in the groove 14, the electrical connecting piece 301 can be floatably supported in the middle of the positioning element 4, and the first elastic element 304 and the second elastic element 5 form a double elastic element structure, which not only improves the response speed of the anti-pinch structure and the stability of the trigger current, but also enhances the safety and durability of the device.

[0046] Preferably, a gasket 6 is provided at one end of the guide post 302 relative to the mounting plate 303. In addition to playing a limiting role during the resetting process of the mounting plate 303, the gasket 6 (insulator) can also effectively block the current conduction between the guide post 302 and the mounting plate 303 due to its insulating properties.

[0047] Preferably, the bottom of the groove 14 is provided with a movable groove 7, in which the guide post 302 is slidably inserted. The movable groove 7 provides clearance for the guide post 302, ensuring the smooth movement of the plate 303.

[0048] Preferably, the end of the plate 303 fixedly connected to the guide post 302 is designated as a contact end 8 (conductive material). In this embodiment, the contact end 8 can be separate from or integrated with the plate 303. The contact end 8 has a through hole 9 that expands in a stepped manner from top to bottom, and the guide post 302 is fixed to the upper end of the through hole 9. A first elastic element 304 is sleeved on the guide post 302, and the first elastic element 304 can partially extend into and abut against the stepped inner wall of the through hole 9. The electrical connecting piece 301 faces directly below the through hole 9. When the plate 303 is pressed down by an external force, the bottom surface of the through hole 9 contacts the electrical connecting piece 301, thereby triggering a control signal to stop the movable plate 2 from operating.

[0049] The contact end 8 has a through hole 9 that expands in a stepped manner from top to bottom, which allows the guide post 302 to form a stable connection with the plate 303, while providing a limiting space for the first elastic element 304, ensuring stable and reliable compression and reset processes. When an external force is applied to the plate 303, the bottom surface of the through hole 9 can accurately contact the electrical connection piece 301 and trigger a control signal, achieving rapid response and anti-pinch protection, thus improving the sensitivity and safety of the overall structure.

[0050] Preferably, a carrier 10 (plastic insulation) is fixedly connected to the groove 14, and the carrier 10 has a through hole 11 that tapers from top to bottom. A guide post 302 passes through the through hole 11, and an electrical connecting piece 301 is sleeved on the outer ring of the carrier 10. A first elastic member 304 is sleeved on the guide post 302, and the first elastic member 304 can partially extend into and abut against the stepped inner wall of the through hole 11.

[0051] The stepped through hole 11 of the carrier 10 (insulating material) provides precise guidance and positioning for the guide post 302, ensuring that the guide post 302 does not deviate during movement, while also providing a stable installation space for the first elastic element 304. The outer ring of the carrier 10 provides precise guidance for the electrical connecting piece 301, improving the effectiveness of electrical signal triggering.

[0052] The working process in this embodiment is as follows: When the movable plate 2 is moving up and down, when the user accidentally touches it or an object presses on the plate 303, the plate 303 compresses the first elastic element 304 and moves downward along the guide post 302. When the bottom surface of the through hole 9 contacts the electrical connecting piece 301, the reaction force of the second elastic element 5 on the electrical connecting piece 301 increases, making the contact end 8 of the plate 303 more tightly connected to the electrical connecting piece 301, thereby forming a stable closed circuit. The controller detects the change in electrical signal and immediately issues a command to stop the drive source 131, thereby controlling the movable plate 2 to stop running and preventing the occurrence of pinching accidents.

[0053] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. An anti-pinch structure, characterized in that, include: A fixing base, wherein a groove is provided on the side of the fixing base, and the groove has an open slot facing outward; A movable plate is disposed at the top of the open slot, and the movable plate reciprocates along the extension direction of the groove; The protective assembly includes an electrical connection piece, a guide post, a plate, and a first elastic element; The electrical connector is disposed at the bottom of the groove, and the guide post is movably inserted through the middle of the electrical connector relative to the fixing seat; The plate is accommodated within the open slot and fixed to the top of the guide post; The first elastic element is sleeved in the middle of the guide post, with one end abutting against the bottom of the plate and the other end abutting against the inner wall of the groove; When an external force is applied to the plate, the plate compresses the first elastic element and is guided downward by the guide post, causing the plate to contact the electrical connection piece, thereby triggering an electrical signal to control the movable plate to stop operating.

2. The anti-pinch structure according to claim 1, characterized in that, The groove is provided with a positioning member and a second elastic member. The positioning member is positioned at the bottom of the groove. The electrical connecting piece is movably disposed in the middle of the positioning member. The second elastic member is sleeved in the middle of the positioning member. The top of the second elastic member abuts against the bottom of the electrical connecting piece, and the bottom of the second elastic member abuts against the inner bottom surface of the groove.

3. The anti-pinch structure according to claim 1 or 2, characterized in that, The bottom of the groove is provided with a movable slot, and the guide post is slidably inserted into the movable slot.

4. The anti-pinch structure according to claim 1 or 2, characterized in that, The plate body is fixedly connected to the end of the guide post as a contact end. The contact end has a through hole that expands in a stepped manner from top to bottom. The guide post is fixed to the upper end of the through hole. The first elastic element is sleeved on the guide post, and the first elastic element can partially extend into and abut against the stepped inner wall of the through hole. The electrical connection piece is directly below the through hole. When the plate body is pressed down by an external force, the bottom surface of the through hole contacts the electrical connection piece, thereby triggering a control signal to stop the moving plate.

5. The anti-pinch structure according to claim 1 or 2, characterized in that, The groove is fixedly connected to a carrier. The carrier has a through hole that tapers from top to bottom. The guide post passes through the through hole. The electrical connection piece is sleeved on the outer ring of the carrier. The first elastic element is sleeved on the guide post and can partially extend into and abut against the stepped inner wall of the through hole.

6. The anti-pinch structure according to claim 1 or 2, characterized in that, The guide post has a gasket at one end opposite to the plate body, and the gasket is used to provide a buffering force when the plate body is reset.

7. The anti-pinch structure according to claim 1 or 2, characterized in that, The protective components are provided in at least six sets, and the six sets of protective components are symmetrically arranged in the groove.

8. The anti-pinch structure according to claim 1 or 2, characterized in that, It also includes a lifting assembly connected between the movable plate and the fixed base, the lifting assembly being used to lift the movable plate.

9. The anti-pinch structure according to claim 8, characterized in that, The lifting assembly includes a drive source and a protective cover. The protective cover is positioned at the bottom of the fixed base, the drive source is disposed inside the protective cover, and the movable plate is installed at the output end of the drive source.

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