Chain link module, chain structure and chain telescopic structure

Abstract

The utility model discloses a chain link module which comprises an inner chain link and two outer chain links, two through holes are formed in the inner chain link, penetrating holes corresponding to the through holes are formed in the outer chain links, and the two through holes are connected with the adjacent penetrating holes of the two adjacent outer chain links through shaft bodies respectively so that the inner chain link can be connected with the corresponding outer chain links through the shaft bodies. The two ends of the shaft body respectively extend out of the outer surfaces of the two outer chain links; limiting shafts are vertically arranged on the surfaces of the inner chain links, and concave positions abutting against the side faces of the limiting shafts are formed in the positions, corresponding to the limiting shafts, of the two ends of the outer chain links respectively. According to the chain link module, the penetrating holes corresponding to the through holes in the inner chain links are formed in the outer chain links and matched with the shaft bodies so that the inner chain links and the corresponding outer chain links can be connected, assembling is convenient, and infinite extension is facilitated; concave positions abutting against the side faces of the limiting shafts of the inner chain links are formed at the two ends of the outer chain links so that the bending direction can be limited, bending and storage are facilitated, and stretching and retracting are achieved. The utility model further discloses a chain structure and a chain telescopic structure.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical telescopic structures, in particular to a link module, a chain structure and a chain telescopic structure. Background Art

[0002] Existing telescopic structures are mainly lead screws and steel wires, etc., which are relatively large in volume and not suitable for portable consumer products. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a link module, a chain structure and a chain telescopic structure, which are small in volume and suitable for portable consumer products.

[0004] In a first aspect, an embodiment of the utility model provides a link module, which includes an inner link and two outer links. Two through holes are provided on the inner link, and perforations corresponding to the through holes are provided on the outer links. The two through holes are respectively connected to the adjacent perforations of the two adjacent outer links through shafts, so that the inner link and the corresponding outer link are connected through the shafts, and both ends of the shafts respectively extend out of the outer surfaces of the two outer links; a limiting shaft is vertically arranged on the surface of the inner link, and concave positions for abutting against the side surfaces of the limiting shafts are respectively formed at both ends of the outer link corresponding to the limiting shaft.

[0005] In a second aspect, an embodiment of the utility model provides a chain structure, which is composed of the above-mentioned link modules connected.

[0006] In a third aspect, an embodiment of the utility model further provides a chain telescopic structure, which includes the above-mentioned chain structure, a sprocket and a housing. The sprocket is in transmission connection with the chain structure, the housing covers the chain structure and the sprocket, and a chain guide groove for embedding both ends of the shaft is provided on the inner wall of the housing.

[0007] The beneficial technical effects of the utility model are as follows: In the link module of the utility model, two through holes are provided on the inner link and perforations corresponding to the through holes are provided on the outer links. The two through holes of the inner link are respectively connected to the adjacent perforations of the two adjacent outer links through shafts, so that the inner link and the corresponding outer link are connected through the shafts. The connection reliability is strong. The inner link of the link module is located between the two outer links of the link module, and the inner link and the outer link are connected through the shafts, which is convenient and simple to assemble and is convenient for the infinite extension of the chain; concave positions for abutting against the side surfaces of the limiting shaft vertically arranged on the surface of the inner link are respectively formed at both ends of the outer link to limit the bending direction, which is convenient for the subsequent bending of the chain, convenient for storage, and the storage volume is small, suitable for portable consumer products, convenient for carrying, and can realize telescoping. The chain structure and the chain telescopic structure of the utility model also have the above functions. Brief Description of the Drawings

[0008] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0009] Figure 1 Structural schematic diagram of the link module provided by the first embodiment of the present invention;

[0010] Figure 2 Exploded schematic diagram of the link module provided by the first embodiment of the present invention;

[0011] Figure 3 Structural schematic diagram of the link module provided by the second embodiment of the present invention;

[0012] Figure 4 Exploded schematic diagram of the link module provided by the second embodiment of the present invention;

[0013] Figure 5 Partial schematic diagram of the chain structure provided by the present invention;

[0014] Figure 6 Assembly schematic diagram of the chain telescopic structure provided by the present invention. Detailed Description of the Embodiments

[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the protection scope of the present invention.

[0016] Please refer to Figures 1 to 2 , Figure 1Schematic structural diagram of a link module provided for the first embodiment of the present utility model. The link module 10 includes an inner link 11 and two outer links 12. Two through holes 111 are provided on the inner link 11, and perforations 121 corresponding to the through holes 111 are provided on the outer links 12. The two through holes 111 are respectively connected to the adjacent perforations 121 of the two adjacent outer links 12 through shaft bodies 13, so that the inner link 11 and the corresponding outer links 12 are connected through the shaft bodies 13. Both ends of the shaft body 13 respectively extend out of the outer surfaces of the two outer links 12; a limiting shaft 14 is vertically provided on the surface of the inner link 11, and concave positions 122 that are in contact with the side surfaces of the limiting shaft 14 are respectively formed at both ends of the outer link 12 corresponding to the limiting shaft 14.

[0017] Among them, the two outer link members 12 of the link module 10 are respectively located on the two surfaces of the inner link member 11 of the link module 10. The two outer link members 12 of the link module 10 are arranged oppositely. One through hole 121 of the two outer link members 12 is connected to one through hole 111 of the inner link member 11 of the link module 10 through a shaft body 13. The shaft body 13 passes through one through hole 111 of the inner link member 11, and both ends of the shaft body 13 extend out of the through hole 111 to respectively pass through one through hole 121 of the two outer link members 12 and extend out of the outer surfaces of the two outer link members 12, so that the other through holes 121 of the two outer link members 12 of the link module 10 are all located outside one end of the inner link member 11 of the link module 10. The other through hole 111 of the inner link member 11 can be connected to the other through holes 121 of the two outer link members 12 of another link module 10 through another shaft body 13. The other shaft body 13 passes through the other through hole 111 of the inner link member 11, and both ends of the shaft body 13 extend out of the through hole 111 to respectively pass through the other through holes 121 of the two outer link members 12 of another link module 10 and extend out of the outer surfaces of the two outer link members 12, realizing the connection between different link modules 10. The two adjacent outer link members 12 located on the same surface of the inner link member 11 are the outer link members 12 of different link modules 10, and the adjacent through holes 121 of the two adjacent outer link members 12 are the through holes 121 adjacent in position between the outer link members 12 of two adjacent different link modules 10. The connection position between the outer link member 12 and the inner link member 11 can be limited by a limiting shaft 14. Concave positions 122 abutting against the side surface of the limiting shaft 14 are formed at both ends of the outer link member 12 corresponding to the limiting shaft 14 to avoid the limiting shaft 14. The link module 10 is provided with two through holes 111 on the inner link member 11 and through holes 121 corresponding to the through holes 111 on the outer link member 12. The two through holes 111 of the inner link member 11 are respectively connected to the adjacent through holes 121 of the two adjacent outer link members 12 through the shaft body 13, so that the inner link member 11 and the corresponding outer link member 12 are connected through the shaft body 13. The connection reliability is strong. The inner link member 11 of the link module 10 is located between the two outer link members 12 of the link module 10. The inner link member 11 and the outer link member 12 are connected through the shaft body 13. The assembly is convenient and simple, facilitating the infinite extension of the chain. Concave positions 122 abutting against the side surface of the limiting shaft 14 are respectively formed at both ends of the outer link member 12 corresponding to the limiting shaft 14 vertically arranged on the surface of the inner link member 11 to limit the bending direction, facilitating the subsequent bending of the chain, facilitating storage, and having a small storage volume. It is applicable to portable consumer products, facilitating carrying and realizing telescoping.

[0018] Specifically, in this embodiment, the shaft body 13 is a circlip shaft. A circlip 15 is sleeved on the circlip shaft. The circlip shaft passes through the inner ring of the circlip 15, and the circlip 15 abuts against the outer surface of the corresponding outer link member 12, so that the connection between the shaft body 13 and the inner link member 11 and the outer link member 12 is tight and the rotational friction resistance is small. A clamping groove for clamping the inner ring of the circlip 15 can be provided on the circlip shaft.

[0019] Preferably, the limiting shaft 14 is cylindrical, and the concave position 122 is arc-shaped.

[0020] Specifically, in this embodiment, a stop edge 123 is formed at one end of the concave position 122 along the length direction of the outer link 12 to cooperate with the limiting shaft 14 to limit the rotation angle of the outer link 12 and can limit the rotation direction of the outer link 12, so as to subsequently limit the bending direction of the chain, ensure that the chain can only bend to one side, and can achieve infinite extension of the chain in any direction without bending. When storing, according to the bendable characteristics of the chain, the storage volume is small and the practicability is strong.

[0021] Specifically, the end face of the limiting shaft 14 is not higher than the outer surface of the outer link 12 to prevent the end of the limiting shaft 14 from protruding from the outer surface of the outer link 12 and blocking the connection between components.

[0022] Refer to Figure 3 and Figure 4 , Figure 3 FIG. is a schematic structural diagram of a link module provided in the second embodiment of the present invention. In the second embodiment, the two through holes 111 of the inner link 11 of the link module 10 are respectively connected to one of the perforations 121 of the two outer links 12 of the link module 10 through the shaft body 13, so that the other perforations 121 of the two outer links 12 of the link module 10 are respectively located outside the two ends of the inner link 11 of the link module 10. One end of the shaft body 13 passes through the through hole 111 of the inner link 11 and then passes through the perforation 121 of the outer link 12 and extends out of the outer surface of the outer link 12. The other end of the shaft body 13 can be used to connect to the other perforation 121 of the outer link 12 of another link module 10, so that the other end of the shaft body 13 extends out of the outer surface of the outer link 12 of another link module 10 to realize the connection between different link modules 10. The remaining structures and functions of the link module 10 are the same as those in the first embodiment and will not be described herein again.

[0023] Refer to Figure 5 , Figure 5Shows a partial structure of a chain structure. The chain structure 20 is composed of a number of the link modules 10 connected together. The inner link 11 of each link module 10 can be connected to the outer link 12 of other link modules 10 through a shaft body 13, so that the connection between each link module 10 is stable. The number of link modules 10 of the chain structure 20 can be set according to actual needs, so that the chain structure 20 can be infinitely extended. The chain structure 20 is composed of a number of the above-mentioned link modules 10 connected together. By providing two through holes 111 on the inner link 11 of the link module 10 and providing perforations 121 corresponding to the through holes 111 on the outer link 12, the two through holes 111 of the inner link 11 are respectively connected to the adjacent perforations 121 of the two adjacent outer links 12 through the shaft body 13, so that the inner link 11 and the corresponding outer link 12 are connected through the shaft body 13, and the connection reliability is strong. The inner link 11 of the link module 10 is located between the two outer links 12 of the link module 10, and the inner link 11 and the outer link 12 are connected through the shaft body 13, which is convenient and simple to assemble and facilitates the infinite extension of the chain structure 20; concave positions 122 that abut against the side surfaces of the limiting shafts 14 are respectively formed at both ends of the outer link 12 corresponding to the limiting shafts 14 vertically arranged on the surface of the inner link 11 to define the bending direction, which is convenient for the subsequent bending of the chain structure 20, convenient for storage, and has a small storage volume, is suitable for portable consumer products, is convenient to carry, and can be telescoped.

[0024] Combined with Figure 6 , Figure 6 Shows the assembly of a chain telescopic structure. The chain telescopic structure 30 includes the above-mentioned chain structure 20, a sprocket 31 and a housing 32. The sprocket 31 is in transmission connection with the chain structure 20; the housing 32 covers the outside of the chain structure 20 and the sprocket 31, and a chain guide groove 33 for the two ends of the shaft body 13 to be embedded is provided on the inner wall of the housing 32, so that the shaft body 13 can move along the chain guide groove 33, thereby driving the inner link 11 and the outer link 12 to move, and further the chain structure 20 can move along the chain guide groove 33.

[0025] Among them, in the initial state, the chain structure 20 can be in a bent and stored state. The sprocket 31 provides power for the movement of the chain structure 20, thereby providing power for the telescopic movement. The chain telescopic structure 30 includes the above-mentioned chain structure 20, which is composed of a plurality of the above-mentioned link modules 10 connected together. By forming two through holes 111 on the inner link 11 of the link module 10 and forming perforations 121 corresponding to the through holes 111 on the outer link 12, the two through holes 111 of the inner link 11 are respectively connected to the adjacent perforations 121 of the two adjacent outer links 12 through the shaft body 13, so that the inner link 11 and the corresponding outer link 12 are connected through the shaft body 13, with strong connection reliability. The inner link 11 of the link module 10 is located between the two outer links 12 of the link module 10, and the inner link 11 and the outer link 12 are connected through the shaft body 13, which is convenient and simple to assemble and facilitates the infinite extension of the chain structure 20; concave positions 122 that abut against the side surfaces of the limiting shafts 14 are respectively formed at both ends of the outer link 12 corresponding to the limiting shafts 14 vertically arranged on the surface of the inner link 11 to define the bending direction, which facilitates the subsequent bending of the chain structure 20, is convenient for storage, has a small storage volume, is suitable for portable consumer products, is convenient to carry, and can achieve telescoping. Moreover, the chain telescopic structure 30 is provided with a chain guiding groove 33 on the inner wall of the housing 32 covering the chain structure 20 and the sprocket 31 for the two ends of the shaft body 13 to be embedded. Also, the sprocket 31 is in transmission connection with the chain structure 20, so as to drive the chain structure 20 to move by rotating the sprocket 31 to achieve telescopic movement, and the end of the shaft body 13 moves along the chain guiding groove 33, so that the chain structure 20 can only move along the chain guiding groove 33. The movement of the chain structure 20 is based on the rotation of the sprocket 31, so that the telescopic length has strong controllability, the telescopic ratio can be adjusted, and the requirement for the initial height is low.

[0026] Specifically, the chain telescopic structure 30 further includes a power mechanism for driving the sprocket 31 to rotate. Among them, the power mechanism can be a motor, and the sprocket 31 can be sleeved on the output shaft of the motor.

[0027] Specifically, the teeth of the sprocket 31 are engaged with the ends of the shaft body 13 protruding from the outer surface of the outer link 12, so that the sprocket 31 is in transmission connection with the chain structure 20.

[0028] Specifically, the housing 32 includes an upper shell and a lower shell, and guiding grooves 34 are correspondingly arranged on the inner surfaces of the upper shell and the lower shell; arc-shaped transition surfaces are provided at the intersections of the guiding grooves 34 with the outer surface of the upper shell and at the intersections of the guiding grooves 34 with the outer surface of the lower shell.

[0029] Preferably, an opening is provided at the starting end of the chain guiding groove 33, and an outlet is provided on the housing 32 corresponding to the opening. The chain structure 20 can be moved out from the opening and extended out from the outlet to extend out of the housing 32. Preferably, the housing 32 is in an L shape.

[0030] Based on the above design, during operation, by rotating the sprocket, the tooth rotation shaft body of the sprocket is driven, thereby driving the shaft body to move along the chain guiding groove, causing the link module to move along the chain guiding groove, and thus the chain structure to move along the chain guiding groove, realizing the extension or bending of the chain structure, and further realizing the telescopic movement.

[0031] In summary, for the link module of the present utility model, two through holes are provided on the inner link, and perforations corresponding to the through holes are provided on the outer link. The two through holes of the inner link are respectively connected to the adjacent perforations of the two adjacent outer links through the shaft body, so that the inner link and the corresponding outer link are connected through the shaft body, with strong connection reliability. The inner link of the link module is located between the two outer links of the link module, and the inner link and the outer link are connected through the shaft body, which is convenient and simple to assemble and facilitates the infinite extension of the chain. Concave positions that abut against the side surfaces of the limiting shafts are respectively formed on the two ends of the outer link corresponding to the limiting shafts vertically arranged on the surface of the inner link to limit the bending direction, facilitating the subsequent bending of the chain, facilitating storage, and having a small storage volume, being applicable to portable consumer products, being convenient to carry, and capable of realizing telescoping. The chain structure of the present utility model is composed of several link modules and also has the above functions, with strong practicability. The chain telescopic structure of the present utility model also has the above functions, and through the chain guiding groove provided on the inner wall of the housing covering the chain structure and the sprocket for the two ends of the shaft body to be embedded, and the sprocket is in transmission connection with the chain structure, the chain structure is driven to move by rotating the sprocket to realize the telescopic movement, and the end of the shaft body moves along the chain guiding groove, so that the chain structure can only move along the chain guiding groove. The movement of the chain structure is based on the rotation of the sprocket, making the telescopic length highly controllable, the telescopic ratio adjustable, and having a low requirement for the initial height.

[0032] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A link module, characterized in that, The link module includes an inner link and two outer links. Two through holes are formed in the inner link, and perforations corresponding to the through holes are formed in the outer links. The two through holes are respectively connected to the adjacent perforations of the two adjacent outer links through shafts, so that the inner link and the corresponding outer links are connected through the shafts, and both ends of the shafts respectively extend out of the outer surfaces of the two outer links; a limiting shaft is vertically arranged on the surface of the inner link, and concave positions are respectively formed at both ends of the outer link to abut against the side surfaces of the limiting shaft.

2. The link module according to claim 1, wherein The shaft is a circlip shaft, and a circlip is sleeved on the circlip shaft. The circlip shaft passes through the inner ring of the circlip, and the circlip abuts against the outer surface of the corresponding outer link.

3. The link module according to claim 2, characterized in that, The limiting shaft is cylindrical, and the concave position is arc-shaped.

4. The link module according to claim 3, wherein A retaining edge is formed at one end of the concave position and extends along the length direction of the outer link.

5. The link module according to claim 1, characterized in that, The end face of the limiting shaft is not higher than the outer surface of the outer link.

6. A chain structure, characterized in that, The chain structure is composed of a plurality of link modules as described in any one of claims 1 to 5 connected together.

7. A chain telescopic structure, characterized in that, The chain telescopic structure includes the chain structure as described in claim 6, and a sprocket, which is in transmission connection with the chain structure; a housing, which covers the chain structure and the sprocket, and chain guide grooves for the two ends of the shaft to be embedded are provided on the inner wall of the housing.

8. The chain telescopic structure according to claim 7, wherein The chain telescopic structure further includes a power mechanism for driving the sprocket to rotate.

9. The chain telescopic structure according to claim 7, characterized in that The teeth of the sprocket are engaged with the ends of the shafts extending out of the outer surfaces of the outer links.

10. The chain telescopic structure according to claim 7, characterized in that, The housing includes an upper housing and a lower housing, and guide grooves are correspondingly arranged on the inner surfaces of the upper housing and the lower housing; arc-shaped transition surfaces are provided at the intersections of the guide grooves and the outer surfaces of the upper housing and the lower housing.

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