Linkage limiting folding mechanism

Abstract

The utility model relates to the technical field of machinery, and discloses a linkage limiting folding mechanism which comprises a seat body, the seat body is fixedly connected with a mounting rod, a linkage limiting assembly is arranged on the end face of the mounting rod, and a rotating assembly is arranged on the outer wall of the linkage limiting assembly. According to the linkage limiting folding mechanism, the limiting cylinder is limited through the screwing sleeve, the vertical rod cannot rotate, the stability degree of equipment during operation is improved, the rotating elastic piece, the screwing sleeve, the vertical rod and parts fixed to the vertical rod can be folded downwards, storage is completed, the size of the folded equipment is reduced, and the occupied size is smaller; the requirements for space and cost in the transportation process are reduced, meanwhile, storage pressure is relieved, the rotation directions of the first thread groove and the second thread groove are opposite, the opposite rotation directions enable the threads at the two positions to generate a self-locking effect when the threads are stressed, the loosening trend is offset mutually, and therefore the stability and safety of connection are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, and particularly relates to a folding mechanism with linkage limit. Background Technique

[0002] In the mechanical field, a folding mechanism is a component that can realize the contraction, expansion or rotation of a structure, and is often used to optimize space utilization, improve the flexibility of equipment or facilitate transportation and storage. The folding mechanism can make the equipment occupy less space when not in use, and is very suitable for mechanical equipment that needs to be frequently carried or stored, such as folding tripods and foldable robotic arms, which can be better operated or stored in a narrow environment.

[0003] Mechanical equipment without a folding mechanism usually has a fixed size, may occupy a large amount of storage space in the non-working state, resulting in low space utilization. At the same time, the large size or non-compressibility of the equipment may increase transportation costs and even make it impossible to pass through certain channels or transportation tools.

[0004] Therefore, in the mechanical field, folding components are usually provided on tripods or robotic arms, etc. The existing folding components often lack a limiting device, and the folding parts cannot stay at a predetermined position when expanding or contracting, and may move unexpectedly due to inertia, gravity or external force. In view of this, we propose a folding mechanism with linkage limit. Content of the Utility Model

[0005] The purpose of the utility model is to provide a folding mechanism with linkage limit to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a folding mechanism with linkage limit, including a seat body, the seat body is fixedly connected with an installation rod, a linkage limit component is arranged on the end face of the installation rod, and a rotating component is arranged on the outer wall of the linkage limit component. The linkage limit component includes:

[0007] A bottom column, the bottom column is threadedly connected with the installation rod, a first thread groove is opened on the outer wall of the bottom column, a limiting cylinder is sleeved on the outer wall of the bottom column, a sleeve is fixedly connected to the end of the limiting cylinder away from the bottom column, and a second thread groove is opened on the outer wall of the limiting cylinder;

[0008] A screwing sleeve, the screwing sleeve is sleeved on the outer wall of the limiting cylinder, and a tightening member is sleeved on the outer wall of the limiting cylinder;

[0009] The rotating component includes:

[0010] A rotating shaft, the rotating shaft is rotatably connected with the installation rod, the rotating shaft is fixedly connected with a limiting rod, a groove is opened on the side wall of the limiting rod, and the groove is slidably connected with a bolt;

[0011] A vertical rod, the side wall of the vertical rod is threadedly connected to the bolt.

[0012] Preferably, a torsion spring is fixedly connected to the side wall of the rotating shaft, and the end of the torsion spring away from the rotating shaft is fixedly connected to the inner wall of the mounting rod.

[0013] Preferably, the first thread groove is threadedly connected to the screwing sleeve, the second thread groove is threadedly connected to the tightening member, and the rotation directions of the first thread groove and the second thread groove are opposite. The opposite rotation directions cause the two threads to generate a self-locking effect when stressed, canceling each other's loosening tendency, thereby improving the connection stability and safety.

[0014] Preferably, the limiting cylinder is sleeved on the limiting rod, and the side wall of the sleeve is threadedly connected to the bolt. The bolt is limited by the groove, enabling the vertical rod and the sleeve to slide longitudinally.

[0015] Preferably, the limiting cylinder has a large-diameter end and a small-diameter end. The large-diameter end is arranged at the end away from the sleeve. The bottom column has a large-diameter end and a small-diameter end. The inner diameter of the large-diameter end of the limiting cylinder is equal to the outer diameter of the large-diameter end of the bottom column, and the inner diameter of the small-diameter end of the limiting cylinder is equal to the outer diameter of the small-diameter end of the bottom column.

[0016] Preferably, the inner wall of the screwing sleeve has a large-diameter end and a small-diameter end. The large-diameter end of the screwing sleeve is arranged at the end away from the tightening member. The inner diameter of the large-diameter end of the screwing sleeve is equal to the outer diameter of the large-diameter end of the limiting cylinder, and the inner diameter of the small-diameter end of the screwing sleeve is equal to the outer diameter of the small-diameter end of the limiting cylinder. After the screwing sleeve is threadedly connected to the first thread groove, the screwing sleeve limits the limiting cylinder to prevent the longitudinal sliding of the limiting cylinder.

[0017] Compared with the prior art, the present utility model provides a folding mechanism with linkage limiting, having the following beneficial effects:

[0018] 1. For this folding mechanism with linkage limiting, through the bottom column, sleeve, screwing sleeve and tightening member provided, the screwing sleeve limits the limiting cylinder to prevent the longitudinal sliding of the limiting cylinder, and the vertical rod cannot rotate, improving the stability of the equipment during operation. Rotate the tightening member clockwise to cancel the threaded connection between the tightening member and the second thread groove, and then rotate the screwing sleeve counterclockwise to cancel the threaded connection between the screwing sleeve and the first thread groove, enabling the vertical rod and the parts fixed on it to be folded downward to complete storage. The size of the folded equipment is reduced, occupying less volume, reducing the requirements for space and cost during transportation, and at the same time reducing the storage pressure. The rotation directions of the first thread groove and the second thread groove are opposite, and the opposite rotation directions cause the two threads to generate a self-locking effect when stressed, canceling each other's loosening tendency, thereby improving the connection stability and safety.

[0019] 2. The folding mechanism with interlocking limit is provided with a spiral spring. The spiral spring always applies a downward pulling force to the vertical rod, keeping it fixed in the folded state. Even when subjected to external vibrations, impacts or other disturbances, it can effectively prevent the accidental unfolding of the vertical rod and its parts, improve the overall stability of the equipment, and extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the main structure of the present utility model;

[0021] Figure 2 is an exploded view of the main body of the present utility model;

[0022] Figure 3 is the present utility model Figure 2 schematic diagram of the structure of area A;

[0023] Figure 4 is a schematic diagram of the cross-sectional structure of the vertical rod of the present utility model;

[0024] Figure 5 is an exploded structure diagram of the sleeve of the present utility model.

[0025] In the figure: 1, seat body; 2, mounting rod; 3, interlocking limit component; 301, bottom column; 302, first thread groove; 303, sleeve; 304, limiting cylinder; 305, second thread groove; 306, screwing sleeve; 307, tensioning member; 4, rotating component; 401, rotating shaft; 402, limiting rod; 403, groove; 404, bolt; 405, vertical rod; 5, spiral spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] As Figures 1 - 5 shown, the present utility model provides a technical solution: a folding mechanism with interlocking limit, including a seat body 1, the seat body 1 is fixedly connected with a mounting rod 2, a interlocking limit component 3 is arranged on the end face of the mounting rod 2, a rotating component 4 is arranged on the outer wall of the interlocking limit component 3, and the interlocking limit component 3 includes a bottom column 301, a first thread groove 302, a sleeve 303, a limiting cylinder 304, a second thread groove 305, a screwing sleeve 306, and a tensioning member 307.

[0027] In an embodiment of the present utility model, the bottom column 301 is threadedly connected with the mounting rod 2, a first thread groove 302 is formed on the outer wall of the bottom column 301, a limiting cylinder 304 is sleeved on the outer wall of the bottom column 301, a sleeve 303 is fixedly connected to the end of the limiting cylinder 304 away from the bottom column 301, and a second thread groove 305 is formed on the outer wall of the limiting cylinder 304.

[0028] The screwing sleeve 306 is sleeved on the outer wall of the limiting cylinder 304. An elastic member 307 is sleeved on the outer wall of the limiting cylinder 304. The first thread groove 302 is in threaded connection with the screwing sleeve 306, and the second thread groove 305 is in threaded connection with the elastic member 307. The rotation directions of the first thread groove 302 and the second thread groove 305 are opposite. The opposite rotation directions cause the two threads to produce a self-locking effect when stressed, canceling out the tendency of loosening each other, thereby improving the connection stability and safety.

[0029] The rotating assembly 4 includes a rotating shaft 401, a limiting rod 402, a groove 403, a bolt 404, and a vertical rod 405.

[0030] The rotating shaft 401 is rotatably connected to the mounting rod 2. The rotating shaft 401 is fixedly connected to the limiting rod 402. A groove 403 is formed in the side wall of the limiting rod 402. The groove 403 is slidably connected to the bolt 404. The side wall of the vertical rod 405 is in threaded connection with the bolt 404. The limiting cylinder 304 is sleeved on the limiting rod 402. The side wall of the sleeve 303 is in threaded connection with the bolt 404. The bolt 404 is limited by the groove 403, enabling the vertical rod 405 and the sleeve 303 to slide longitudinally.

[0031] The limiting cylinder 304 has a large-diameter end and a small-diameter end. The large-diameter end is the end far from the sleeve 303. The bottom column 301 has a large-diameter end and a small-diameter end. The inner diameter of the large-diameter end of the limiting cylinder 304 is equal to the outer diameter of the large-diameter end of the bottom column 301. The inner diameter of the small-diameter end of the limiting cylinder 304 is equal to the outer diameter of the small-diameter end of the bottom column 301. The inner wall of the screwing sleeve 306 has a large-diameter end and a small-diameter end. The large-diameter end of the screwing sleeve 306 is the end far from the elastic member 307. The inner diameter of the large-diameter end of the screwing sleeve 306 is equal to the outer diameter of the large-diameter end of the limiting cylinder 304. The inner diameter of the small-diameter end of the screwing sleeve 306 is equal to the outer diameter of the small-diameter end of the limiting cylinder 304. After the screwing sleeve 306 is in threaded connection with the first thread groove 302, the screwing sleeve 306 limits the limiting cylinder 304 to prevent the longitudinal sliding of the limiting cylinder 304.

[0032] The screwing sleeve 306 limits the limiting cylinder 304 to prevent the longitudinal sliding of the limiting cylinder 304. At this time, the vertical rod 405 cannot rotate, improving the stability of the equipment during operation.

[0033] Rotate the elastic member 307 clockwise to cancel the threaded connection between the elastic member 307 and the second thread groove 305, and then rotate the screwing sleeve 306 counterclockwise to cancel the threaded connection between the screwing sleeve 306 and the first thread groove 302. At this time, the screwing sleeve 306 cannot limit the limiting cylinder 304. Pull the limiting cylinder 304 to drive the vertical rod 405 to move linearly along the groove 403, so that the rotating mechanism on the mounting rod 2 has free space, enabling the vertical rod 405 and the parts fixed on it to be folded downward to complete the storage. After folding, the size of the equipment is reduced, occupying less volume, reducing the requirements for space and cost during transportation, and at the same time reducing the storage pressure.

[0034] In addition, a torsion spring 5 is fixedly connected to the side wall of the rotating shaft 401. One end of the torsion spring 5 away from the rotating shaft 401 is fixedly connected to the inner wall of the mounting rod 2. The torsion spring 5 always applies a downward pulling force to the vertical rod 405 to keep it fixed in the folded state. Even if it is subjected to external vibration, impact or other interference, it can effectively prevent the vertical rod 405 and its parts from accidentally unfolding, improve the overall stability of the device, and extend the service life.

[0035] In the present utility model, during use, the tightening member 307 is rotated clockwise to cancel the threaded connection between the tightening member 307 and the second threaded groove 305. Then, the screwing sleeve 306 is rotated counterclockwise to cancel the threaded connection between the screwing sleeve 306 and the first threaded groove 302. The limiting cylinder 304 is pulled to drive the vertical rod 405 to linearly move along the groove 403. The torsion spring 5 applies a downward pulling force to the vertical rod 405, so that the vertical rod 405 and the parts fixed thereon can be folded downward to complete the storage.

[0036] The above has generally described the present utility model in detail. However, based on the present utility model, some modifications or improvements can be made, which are obvious to those of ordinary skill in the technical field. Therefore, the modifications or improvements made without departing from the spirit of the present utility model are within the protection scope of the present utility model.

Claims

1. A folding mechanism with linkage and limit position, comprising a seat body (1), wherein the seat body (1) is fixedly connected to a mounting rod (2), and characterized in that: The end surface of the mounting rod (2) is provided with a linkage limit assembly (3), the outer wall of the linkage limit assembly (3) is provided with a rotation assembly (4), and the linkage limit assembly (3) comprises: A bottom column (301), the bottom column (301) being threadedly connected to the mounting rod (2), the outer wall of the bottom column (301) being provided with a first thread groove (302), the outer wall of the bottom column (301) being sleeved with a limiting cylinder (304), one end of the limiting cylinder (304) away from the bottom column (301) being fixedly connected with a sleeve (303), and the outer wall of the limiting cylinder (304) being provided with a second thread groove (305); A twist sleeve (306), wherein the twist sleeve (306) is sleeved on the outer wall of the limiting cylinder (304), and the outer wall of the limiting cylinder (304) is sleeved with an elastic member (307); The rotating assembly (4) comprises: A rotating shaft (401), the rotating shaft (401) is rotatably connected to the mounting rod (2), the rotating shaft (401) is fixedly connected to the limiting rod (402), a groove (403) is formed on the side wall of the limiting rod (402), and the groove (403) is slidably connected to the bolt (404); A vertical pole (405), the side wall of which is threadedly connected to the bolt (404).

2. A folding mechanism with linkage and limit according to claim 1, characterized in that: A coil spring (5) is fixedly connected to the side wall of the rotating shaft (401), and one end of the coil spring (5) away from the rotating shaft (401) is fixedly connected to the inner wall of the mounting rod (2).

3. The folding mechanism with linkage and limit according to claim 1, characterized in that: The first thread groove (302) is threadedly connected to the screw sleeve (306), and the second thread groove (305) is threadedly connected to the tension piece (307). The rotation directions of the first thread groove (302) and the second thread groove (305) are opposite.

4. The folding mechanism with linkage and limit according to claim 1, characterized in that: The limiting cylinder (304) is sleeved with the limiting rod (402), and the side wall of the sleeve (303) is threadedly connected with the bolt (404).

5. The folding mechanism with linkage and limit according to claim 1, characterized in that: The limiting cylinder (304) is provided with a large diameter end and a small diameter end, the large diameter end is provided at an end away from the sleeve (303), the base column (301) is provided with a large diameter end and a small diameter end, the inner diameter of the large diameter end of the limiting cylinder (304) is equal to the outer diameter of the large diameter end of the base column (301), and the inner diameter of the small diameter end of the limiting cylinder (304) is equal to the outer diameter of the small diameter end of the base column (301).

6. A linkage-limited folding mechanism according to claim 5, characterized in that: The inner wall of the screw sleeve (306) is provided with a large diameter end and a small diameter end. The large diameter end of the screw sleeve (306) is provided at an end away from the elastic member (307). The inner diameter of the large diameter end of the screw sleeve (306) is equal to the outer diameter of the large diameter end of the limiting cylinder (304). The inner diameter of the small diameter end of the screw sleeve (306) is equal to the outer diameter of the small diameter end of the limiting cylinder (304).

Images