Adjustable bidirectional linear clutch mechanism

Abstract

This invention relates to an adjustable bidirectional linear clutch mechanism, comprising a fixed element, a movable element, a groove, a roller, a pin, etc. By adjusting the position of the pin, the relative position of the roller in the groove can be changed, thereby allowing the movable element to move infinitely in only one direction. When the pin is placed in different positions in the groove, the direction of unidirectional movement of the movable element can be controlled, that is, it can be made to move only to the left or only to the right as needed.

Description

Technical Field

[0001] This invention relates to a linear clutch mechanism, specifically an adjustable bidirectional linear clutch mechanism. Background Technology

[0002] In engineering applications, situations often arise where one component needs to move linearly relative to another, while simultaneously requiring unidirectional movement—meaning movement in only one direction is possible, with the other direction restricted. Examples include various length-adjusting rods, height-adjusting brackets, and supports. Existing adjustment methods, some using threaded fastening and others using pins, are cumbersome and lack reliability in terms of connection stability and strength. Summary of the Invention

[0003] The purpose of this invention is to propose an adjustable bidirectional linear clutch mechanism, which, through rollers, adjusting plates, pins, etc. set in the groove, allows the two components to only be relatively close or relatively far apart as needed, and has the characteristics of stepless adjustment and automatic length maintenance.

[0004] The technical solution for achieving the objective of this invention is as follows:

[0005] An adjustable bidirectional linear clutch mechanism is provided, characterized in that it comprises a fixed element, a movable element, a groove, a roller, a spring, a pin, and an adjusting plate; the groove is disposed on the contact surface between the fixed element and the movable element, and is located within the fixed element; the roller, the adjusting plate, and the spring are disposed within the groove; there are two springs, respectively disposed on both sides of the roller; the movable element is located above the roller, and the adjusting plate is located below the roller; a groove matching the cross-sectional shape of the pin is formed between the adjusting plate and the bottom surface of the groove; when the pin is inserted into the groove, the adjusting plate is supported and moved away from the bottom surface of the groove, at which point the distance between the supported position of the adjusting plate and the movable element is less than the diameter of the roller. When the pin is not inserted into the groove, and the adjusting plate is parallel to the movable element, the distance between the adjusting plate and the movable element is not less than the diameter of the roller, and the maximum distance between the lower surface of the adjusting plate and the bottom surface of the groove is less than the corresponding dimension of the pin.

[0006] Preferably, the adjusting plate has a protrusion on the side facing the bottom of the groove, and the protrusion is hinged to the bottom of the groove. The adjusting plate can be hinged and fixed to the bottom of the groove in the middle position, using the hinge as a fulcrum for support and rotation, or both sides can be flat and placed directly in the groove, or the adjusting plate can be placed directly at the bottom of the groove, with the side facing the bottom of the groove forming a groove for the mounting pin together with the bottom of the groove. The specific design can be customized as needed.

[0007] Preferably, the groove can also be provided in the movable element.

[0008] Preferably, one end of the pin is tapered. Alternatively, two pins can be inserted into the grooves on either side to smoothly support one end of the adjusting plate, causing the roller to move.

[0009] Preferably, the groove is located below the springs on both sides of the roller. The groove is mainly used to insert the pin and stabilize its position, so that the pin is fixed to reliably support the adjusting plate. In effect, it is better to set the pin near the end of the adjusting plate. There can also be multiple pins and corresponding grooves, which can be used in sequence to make the rotation of the adjusting plate or the raising of one end of the adjusting plate more convenient.

[0010] Preferably, the grooves are symmetrically distributed relative to the rollers. This structure is mainly used to achieve bidirectional adjustment, allowing the movable element to move unidirectionally to the left or right relative to the fixed element as needed.

[0011] Preferably, the pin has lower strength than the adjusting plate and the roller. In extreme cases, the pin's deformation or damage protects other components, and pin replacement is easier, reducing operating costs.

[0012] Compared with the prior art, the technical solution of the present invention has at least the following advantages:

[0013] The movable element can be moved unidirectionally to the left or right relative to the fixed element as needed, and the direction of unidirectional movement is adjustable. When the pin is not inserted, the movement of the movable element relative to the fixed element is unrestricted. When moving in one direction, the movement is steplessly adjustable and can be fixed at any time to maintain a constant relative position.

[0014] When the components are relatively fixed, the system has high strength. The movable and fixed components are relatively fixed by roller clamping. The shape of the movable and fixed components has little impact on the structure, resulting in high overall system strength.

[0015] It is easy to adjust; when you need to release or change the direction of unidirectional movement, simply pull out the pin. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the adjustable bidirectional linear clutch mechanism of the present invention when the pin is not inserted.

[0017] Figure 2 This is a schematic diagram of the structure of an adjustable bidirectional linear clutch mechanism of the present invention when the pin is inserted.

[0018] The attached diagram is labeled as follows: 1 - Movable element; 2 - Fixed element; 3 - Roller; 4 - Spring; 5 - Adjusting plate; 6 - Pin; 7 - Groove; 8 - Recess. Implementation

[0019] Reference Appendix Figure 1 and attached Figure 2 The following is a detailed description of one embodiment of the present invention.

[0020] like Figure 1 As shown, an adjustable bidirectional linear clutch mechanism includes a fixed element 2 and a movable element 1 mounted in the fixed element 2. A groove 8 is located in the fixed element 2, engaging with the movable element 1. The groove 8 contains a roller 3, an adjusting plate 5, and two identical springs 4. The two springs 4 are respectively mounted on both sides of the roller 3, with the other ends of the springs 4 mounted on the sidewalls of the groove 8. The adjusting plate 5 is located below the springs 4 and the roller 3, with a flat upper surface and a protrusion in the middle of its lower surface. The protrusion is hinged to the bottom of the groove 8. On the bottom surface of the groove 8, symmetrical grooves 7 matching pins 6 are arranged on both sides of the hinge position with the adjusting plate 5. When the upper surface of the adjusting plate 5 is parallel to the outer surface of the movable element 1, the distance between the adjusting plate 5 and the movable element 1 is not less than the diameter of the roller 3, and the maximum distance between the lower surface of the adjusting plate 5 and the bottom surface of the groove 8 is less than the corresponding dimension of the pin 6.

[0021] Figure 1 When pin 6 is not inserted into slot 7, the distance between adjusting plate 5 and movable element 1 is not less than the diameter of roller 3, so movable element 1 can move freely relative to fixed element 2. When pin 6 is inserted into slot 7, it becomes... Figure 2 state, Figure 2 In this configuration, pin 6 is inserted into groove 7 on the right side of roller 3. At this time, the right end of adjusting plate 5 is supported by pin 6 and moves away from the bottom surface of groove 8. Therefore, a wedge-shaped space is formed between adjusting plate 5 and the outer surface of movable element 1. In the wedge-shaped space, the end supported by pin 6 is smaller than the diameter of roller 3, and the other end is larger than the diameter of roller 3. Additionally, as... Figure 1 As shown, before pin 6 is inserted into groove 7, the position of roller 3 is unrestricted, and adjusting plate 5 does not affect the left or right movement of roller 3. Therefore, in this state, roller 3 is only affected by the springs 4 on both sides, and since the springs 4 at both ends are the same, roller 3 is located in the middle position of the two springs 4, which is the middle position of groove 8. Figure 2 In the middle, because pin 6 inserts into slot 7, causing adjusting plate 5 to rotate, the change in space above adjusting plate 5 also causes roller 3 to move to the left. Therefore, the spring 4 on the left side of roller 3 relative to... Figure 1 The equilibrium position generates a force to the right, while the spring 4 on the right side of roller 3 is relative to... Figure 1 The equilibrium position also generates a force to the right, that is... Figure 2The two springs 4 generate a resultant force on the roller 3 to the right, attempting to move the roller 3 towards the smaller end of the wedge-shaped space. In this situation, the movable element 1 can only move to the left relative to the fixed element 2, and cannot move to the right. When the movable element 1 moves to the left relative to the fixed element 2, the friction between the movable element 1 and the roller 3 causes the roller 3 to move to the left. At this time, the space dimension on the left is larger than the diameter of the roller 3, so the movable element 1 can move to the left. However, when the movable element 1 moves to the right relative to the fixed element 2, the friction between the two causes the roller 3 to move to the right. At this time, the space dimension on the right is smaller than the diameter of the roller 3, so the roller 3 can only be stuck, preventing the movable element 1 from moving to the right relative to the fixed element 2. When the pin 6 is inserted into the groove 7 on the left side of the roller 3, for the same reason, the movable element 1 can only move to the right relative to the fixed element 2, and cannot move to the left.

[0022] The adjusting plate 5 can also be placed directly on the bottom surface of the groove 8. Between the adjusting plate 5 and the bottom surface of the groove 8 is a groove 7 for inserting the pin 6. When the pin 6 is inserted into the groove 7, the corresponding end of the adjusting plate 5 rises, forming a wedge-shaped space above. The smaller end of this wedge is smaller than the diameter of the roller 3, causing the roller 3 to shift towards the larger end of the wedge-shaped space. Under the combined force of the spring 4, the roller 3 tends to move towards the smaller end of the wedge-shaped space. The pin 6 engages with the groove 7, providing stable positioning and reliable support for the adjusting plate 5, ensuring that the wedge-shaped space above the adjusting plate 5 remains unchanged. The groove 7 can be completely located on the bottom surface of the groove 8, or it can be formed by the bottom surface of the groove 8 and the lower surface of the adjusting plate 5. Furthermore, the pin 6 is weaker than the adjusting plate 5 and the roller 3. In extreme cases, the pin 6 will deform and break first, while the adjusting plate 5 and the roller 3 will retain their shape.

[0023] In the description of the embodiments of the present invention, it should be noted that expressions such as "movable" and "fixed" are merely for the convenience of description, indicating relative motion relationships and distinguishing the defined components, and do not represent the actual motion state of the elements. The bottom surface of the groove refers to the bottom surface of the groove, not the bottom plane. The terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of the present invention.

[0024] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. An adjustable bidirectional linear clutch mechanism, characterized in that: The device includes a fixed element, a movable element, a groove, a roller, a spring, a pin, and an adjusting plate. The groove is disposed on the contact surface between the fixed element and the movable element, and is located in either the fixed element or the movable element. The roller, the adjusting plate, and the spring are disposed within the groove. There are two springs, one on each side of the roller. The movable element is located above the roller, and the adjusting plate is located below the roller. A groove matching the cross-sectional shape of the pin is formed between the adjusting plate and the bottom surface of the groove. A protrusion is located on the side of the adjusting plate facing the bottom surface of the groove, and the protrusion is hinged to the bottom surface of the groove. The groove is located below the springs on both sides of the roller.

2. The adjustable bidirectional linear clutch mechanism according to claim 1, characterized in that: One end of the pin is tapered.

3. The adjustable bidirectional linear clutch mechanism according to claim 1, characterized in that: The grooves are symmetrically distributed relative to the rollers.

4. The adjustable bidirectional linear clutch mechanism according to claim 1, characterized in that: The strength of the pin is lower than that of the adjusting plate and the roller.

5. The adjustable bidirectional linear clutch mechanism according to claim 1, characterized in that: When the pin is inserted into the groove, the adjusting plate is supported and moved away from the bottom surface of the groove. At this time, the distance between the supporting position of the adjusting plate and the movable element is less than the diameter of the roller.

6. The adjustable bidirectional linear clutch mechanism according to claim 1, characterized in that: When the pin is not inserted into the groove, and the adjusting plate is parallel to the movable element, the distance between the adjusting plate and the movable element is not less than the diameter of the roller, and the maximum distance between the lower surface of the adjusting plate and the bottom surface of the groove is less than the corresponding size of the pin.

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