Coupling

Abstract

The utility model provides a coupler which comprises a first connecting piece, a second connecting piece and a connecting piece, the second connecting piece is arranged on one side of the first connecting piece in the first direction, the first connecting piece is connected with the second connecting piece through the connecting piece, and the second connecting piece can rotate relative to the first connecting piece. The coupler is composed of three simple components, namely the first connecting piece, the second connecting piece and the connecting piece, the first connecting piece is connected with the second connecting piece through the connecting piece, the second connecting piece can rotate relative to the first connecting piece, and therefore universal rotation can be achieved, and the simple components can be better matched with small devices. And the waste of power resources can be reduced, the maintenance is more convenient, the cost is low, and the production cost of a small-sized device can be better reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of couplings, in particular to a coupling. Background Art

[0002] A coupling is a device widely used in mechanical transmission systems. Its main function is to connect two shafts or shafts and rotating parts so that they can rotate together during the transmission of motion and power and do not disengage under normal circumstances.

[0003] With the development of couplings, some universal couplings have been developed to enable two axes that are not on the same axis to rotate together. However, the existing universal couplings have relatively complex structures, and most of them are suitable for large equipment with high costs. However, there are no suitable universal couplings for small devices. If the universal couplings of existing large equipment are used, the production cost of small devices will be greatly increased, and it is also easy to cause a waste of resources. In addition, it is not convenient to use. Utility Model Content

[0004] The utility model aims to provide a coupling, aiming to solve the problem that the existing universal coupling is difficult to adapt to small devices, thus causing waste of resources and inconvenience in use.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A coupling is provided, comprising a first connecting member, a second connecting member and a coupling member, wherein the second connecting member is arranged on one side of the first connecting member along a first direction, the first connecting member is connected to the second connecting member through the coupling member, and the second connecting member can rotate relative to the first connecting member.

[0007] Optionally, the connecting piece is cross-shaped, the first connecting piece is symmetrically provided with two first clamping parts, the two first clamping parts are clamped on both sides of the connecting piece, the second connecting piece is symmetrically provided with two second clamping parts, the two second clamping parts are clamped on both sides of the connecting piece and are not on the same side as the first clamping parts, and the two second clamping parts can rotate relative to the connecting piece.

[0008] Optionally, the first clamping portion is provided with a first clamping groove adapted to the connecting member, and the connecting member is clamped in the first clamping groove and can rotate relative to the first connecting member.

[0009] Optionally, the second clamping portion is provided with a second clamping groove adapted to the connecting member, and the connecting member is clamped in the second clamping groove and can rotate relative to the second connecting member.

[0010] Optionally, the connecting piece has four evenly distributed connecting parts, the outer diameter of the connecting part is smaller than the inner diameter of the first clamping groove, and the outer diameter of the connecting part is smaller than the inner diameter of the second clamping groove.

[0011] Optionally, a side of the connecting portion close to the first connecting member has a wedge-shaped surface, and a side of the connecting portion close to the second connecting member has a curved surface.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the coupling provided by the utility model, three simple components are adopted, namely a first connecting member, a second connecting member and a connecting member. The first connecting member is connected to the second connecting member through the connecting member, and the second connecting member can rotate relative to the first connecting member, thereby realizing universal rotation. Simple components can better adapt to small devices, can reduce the waste of power resources, are more convenient to maintain, and have low cost, which can better reduce the production cost of small devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a structural schematic diagram of the coupling of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the coupling of the utility model when it is working;

[0017] Figure 3 It is a structural schematic diagram of the connecting member of the coupling of the utility model;

[0018] Figure 4 It is a schematic diagram of the connection structure of the first connecting member and the connecting member of the coupling of the utility model;

[0019] Figure 5 It is a schematic diagram of the connection structure of the second connecting member and the connecting member of the coupling of the utility model;

[0020] Figure 6 It is an exploded schematic diagram of the coupling of the utility model.

[0021] In the figure: 1, first connecting member; 11, first clamping portion; 12, first clamping groove; 2, second connecting member; 21, second clamping portion; 22, second clamping groove; 3, connecting member; 31, connecting portion; 32, wedge-shaped surface; 33, arc surface. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0025] Combine the following Figures 1 to 6 The coupling of the utility model is described.

[0026] like Figures 1 to 6 As shown, the utility model provides a coupling, including a first connecting member 1, a second connecting member 2 and a connecting member 3, the second connecting member 2 is arranged on one side of the first connecting member 1 along a first direction, the first connecting member 1 is connected to the second connecting member 2 through the connecting member 3, and the second connecting member 2 can rotate relative to the first connecting member 1.

[0027] For the convenience of explanation, in this embodiment, each direction is as follows Figure 1 As shown, the first connecting member 1 is arranged on the right side of the second connecting member 2 .

[0028] In the coupling provided in this embodiment, three simple components are adopted, namely the first connecting member 1, the second connecting member 2 and the connecting member 3. The first connecting member 1 is connected to the second connecting member 2 through the connecting member 3. The second connecting member 2 can rotate relative to the first connecting member 1, thereby realizing universal rotation. Simple components can better adapt to small devices, reduce the waste of power resources, are more convenient to maintain, and have low cost, which can better reduce the production cost of small devices.

[0029] In some embodiments, the connecting member 3 is cross-shaped, the first connecting member 1 is symmetrically provided with two first clamping portions 11, and the two first clamping portions 11 are clamped on both sides of the connecting member 3, and the second connecting member 2 is symmetrically provided with two second clamping portions 21, and the two second clamping portions 21 are clamped on both sides of the connecting member 3 and are not on the same side as the first clamping portions 11, and the two second clamping portions 21 can rotate relative to the connecting member 3. Specifically, the two first clamping portions 11 are arranged on the front and back sides, and the two second clamping portions 21 are arranged on the upper and lower sides. The first connecting member 1 and the second connecting member 2 can swing relatively forward, backward, left and right, thereby realizing universal rotation. The overall structure is very simple, can better adapt to small devices, and has low cost, which can better reduce the production cost of small devices.

[0030] In some embodiments, the first clamping portion 11 is provided with a first clamping groove 12 adapted to the connecting member 3. The connecting member 3 is clamped in the first clamping groove 12 and can rotate relative to the first connecting member 1. The first clamping groove 12 is used to provide space for the connecting member 3 to move, and can also prevent the connecting member 3 from detaching, thereby realizing universal rotation, with a simple structure and lower production cost.

[0031] In some embodiments, the second clamping portion 21 is provided with a second clamping groove 22 adapted to the connecting member 3. The connecting member 3 is clamped in the second clamping groove 22 and can rotate relative to the second connecting member 2. The second clamping groove 22 is used to provide space for the connecting member 3 to move, and can also prevent the connecting member 3 from detaching, thereby realizing universal rotation, simple structure, and lower production cost.

[0032] In some embodiments, the connecting member 3 has four evenly distributed connecting parts 31, the outer diameter of the connecting part 31 is smaller than the inner diameter of the first snap-fit ​​groove 12, and the outer diameter of the connecting part 31 is smaller than the inner diameter of the second snap-fit ​​groove 22. Through such a design, space for the connecting member 3 to move can be provided, and the connecting member 3 can also be prevented from detaching, thereby realizing universal rotation, simple structure, and lower production cost.

[0033] In some embodiments, the connecting portion 31 has a wedge-shaped surface 32 on the side close to the first connecting member 1, and has an arc surface 33 on the side close to the second connecting member 2. Through such a setting, the connecting member 3 has a smaller range of motion on the first connecting member 1 and better stability, while the connecting member 3 has a larger range of motion on the second connecting member 2. While ensuring the overall stability, the universal rotation range of the second connecting member 2 can be improved, which makes it more convenient to use and safer.

[0034] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A coupling, characterized in that: The invention comprises a first connecting member (1), a second connecting member (2) and a connecting member (3); the second connecting member (2) is arranged on one side of the first connecting member (1) along a first direction; the first connecting member (1) is connected to the second connecting member (2) via the connecting member (3); and the second connecting member (2) can rotate relative to the first connecting member (1).

2. The coupling according to claim 1, characterized in that: The connecting member (3) is cross-shaped, the first connecting member (1) is symmetrically provided with two first clamping parts (11), the two first clamping parts (11) are clamped on two sides of the connecting member (3), the second connecting member (2) is symmetrically provided with two second clamping parts (21), the two second clamping parts (21) are clamped on two sides of the connecting member (3) and are not on the same side as the first clamping parts (11), and the two second clamping parts (21) can rotate relative to the connecting member (3).

3. The coupling according to claim 2, characterized in that: The first clamping portion (11) is provided with a first clamping groove (12) adapted to the connecting member (3); the connecting member (3) is clamped in the first clamping groove (12) and can rotate relative to the first connecting member (1).

4. The coupling according to claim 3, characterized in that: The second clamping portion (21) is provided with a second clamping groove (22) adapted to the connecting member (3); the connecting member (3) is clamped in the second clamping groove (22) and can rotate relative to the second connecting member (2).

5. The coupling according to claim 4, characterized in that: The connecting piece (3) has four evenly distributed connecting parts (31), the outer diameter of the connecting part (31) is smaller than the inner diameter of the first clamping groove (12), and the outer diameter of the connecting part (31) is smaller than the inner diameter of the second clamping groove (22).

6. The coupling according to claim 5, characterized in that: The side of the connecting portion (31) close to the first connecting member (1) has a wedge-shaped surface (32), and the side of the connecting portion (31) close to the second connecting member (2) has a curved surface (33).

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