Universal coupling

Abstract

The utility model discloses a universal coupling, which relates to the technical field of couplings and comprises a base structure, a pair of connecting structures and a pair of external structures, the connecting structures are used for connecting the base structure and the pair of external structures, the base structure comprises a base ring, the connecting structures comprise connecting rings, and the external structures comprise structural cylinders. The foundation ring is arranged between the pair of connecting rings, the structural cylinders are arranged in the adjacent connecting rings, a pair of fixed connecting strips are symmetrically and fixedly installed on the outer side wall of the foundation ring, the foundation ring is perpendicular to the fixed connecting strips, two pairs of symmetrically-arranged fixed columns are fixedly installed outside the connecting rings, and a pair of connecting holes are symmetrically formed in the fixed connecting strips. By arranging the base structure, the pair of connecting structures and the pair of external structures, the shaft end of the structural cylinder is designed to penetrate into the connecting ring, so that the distance between the two end faces of the coupler is remarkably shortened, the overall size is reduced, and the coupler can be used in the space-limited environment easily.

Description

TECHNICAL FIELD

[0001] The utility model relates to a coupling technical field especially relates to a universal coupling. BACKGROUND

[0002] Universal coupling is a mechanical device used to connect two shafts, allowing them to transmit power between different angles and positions. They are widely used in automobiles, mechanical equipment, robots and industrial transmission systems. Traditional universal coupling is usually composed of multiple metal parts, which can withstand a certain torque and angular deviation.

[0003] Traditional universal coupling is usually large in size, not suitable for space-limited application scenarios, limiting its use in compact design. Existing universal coupling is usually large in size and heavy in weight, limiting its use in space-limited and weight-sensitive applications. Therefore, a universal coupling needs to be proposed. SUMMARY

[0004] The utility model aims at solving the shortcomings that universal coupling is usually large in size and heavy in weight in prior art, limiting its use in space-limited and weight-sensitive applications, and proposes a universal coupling.

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

[0006] A universal coupling, comprising a base structure, a pair of connecting structures and a pair of external structures, the connecting structure is used for connecting the base structure and the pair of external structures, the base structure comprises a base ring, the connecting structure comprises a connecting ring, and the external structure comprises a structure cylinder, the base ring is arranged between the pair of connecting rings, and the structure cylinder is arranged in the adjacent connecting ring.

[0007] Preferably, a pair of fixed connecting strips are symmetrically and fixedly installed on the outer side wall of the base ring, and the base ring and the fixed connecting strip are vertically arranged;

[0008] The axial end of the structure cylinder is designed to penetrate into the connecting ring, which significantly shortens the distance between the two end faces of the coupling, reduces the overall size, and is beneficial to use in space-limited environment.

[0009] Preferably, two pairs of symmetrically arranged fixed columns are fixedly installed on the connecting ring, a pair of connecting holes are symmetrically arranged on the fixed connecting strip, and the two pairs of symmetrically arranged fixed columns correspond to the two connecting holes arranged on the pair of connecting holes respectively;

[0010] Preferably, a pair of L-shaped mounting blocks are symmetrically and rotatably installed on the outer side wall of the structure cylinder, the L-shaped mounting block comprises a horizontal segment and a vertical segment, the horizontal segment is rotatably connected with the outer side wall of the structure cylinder, and the vertical segment is fixedly connected with the horizontal segment;

[0011] The vertical section is provided with a mounting hole, and the other pair of symmetrically arranged fixing columns correspond to the mounting hole;

[0012] The fixing columns on the pair of connecting rings are respectively inserted into the corresponding mounting holes and connecting holes.

[0013] Preferably, the connecting ring is fixedly provided with a polyurethane bushing on the inner side wall;

[0014] The friction and damping performance of the connection are improved.

[0015] The utility model has the following beneficial effects:

[0016] 1. By setting the base structure, the pair of connecting structures and the pair of external structures, the shaft end of the structure cylinder is designed to pass into the connecting ring, which significantly shortens the distance between the two end faces of the shaft coupling, reduces the overall size, and is beneficial to use in a space-limited environment.

[0017] 2. By setting the fixing column, the mounting hole and the connecting hole, the fixing columns on the pair of connecting rings are respectively inserted into the corresponding mounting holes and connecting holes, and the base structure, the pair of connecting structures and the pair of external structures are connected. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A three-dimensional structure schematic diagram of the universal shaft coupling is provided.

[0019] Figure 2 A three-dimensional structure schematic diagram of the base ring is provided.

[0020] Figure 3 A side structure schematic diagram of the base ring is provided.

[0021] Figure 4 A structure schematic diagram of the connecting structure is provided.

[0022] Figure 5 A structure schematic diagram of the external structure is provided.

[0023] In the figure: 1, base structure; 11, base ring; 12, fixed connecting strip; 13, connecting hole; 2, connecting structure; 21, connecting ring; 22, fixing column; 3, external structure; 31, structure cylinder; 32, L-shaped mounting block; 321, horizontal section; 322, vertical section; 33, mounting hole. DETAILED DESCRIPTION

[0024] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments. Obviously, the embodiments to be described are only a part of the embodiments of the present application, but not all the embodiments.

[0025] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the present application.

[0026] Referring to Figures 1-5 A universal joint, comprising a base structure 1, a pair of connecting structures 2 and a pair of external structures 3, the connecting structure 2 is used for connecting the base structure 1 and the pair of external structures 3, the base structure 1 comprises a base ring 11, the connecting structure 2 comprises a connecting ring 21, the external structure 3 comprises a structure cylinder 31, the base ring 11 is arranged between the pair of connecting rings 21, and the structure cylinder 31 is arranged in the adjacent connecting ring 21.

[0027] A pair of fixed connecting strips 12 are symmetrically and fixedly installed on the outer side wall of the base ring 11, and the base ring 11 is vertically arranged with the fixed connecting strip 12.

[0028] Two pairs of symmetrically arranged fixed columns 22 are fixedly installed on the connecting ring 21, a pair of connecting holes 13 are symmetrically arranged on the fixed connecting strip 12, and the pair of symmetrically arranged fixed columns 22 correspond to the two connecting holes 13 arranged on the pair of connecting holes 13.

[0029] A pair of L-shaped mounting blocks 32 are symmetrically and rotatably installed on the outer side wall of the structure cylinder 31, the L-shaped mounting block 32 comprises a horizontal section 321 and a vertical section 322, the horizontal section 321 is rotatably connected with the outer side wall of the structure cylinder 31, and the vertical section 322 is fixedly connected with the horizontal section 321.

[0030] Mounting holes 33 are arranged on the vertical section 322, and the other pair of symmetrically arranged fixed columns 22 correspond to the mounting holes 33.

[0031] A polyurethane bushing is fixedly installed on the inner side wall of the connecting ring 21.

[0032] The utility model discloses a pair of symmetrical fixed column 22 with two connecting holes 13 respectively arranged on a pair of connecting holes 13 are matched, and structure cylinder 31 is inserted into connecting ring 21, and rotates L shape mounting block 32, so that another pair of symmetrical fixed column 22 is matched with mounting hole 33, and the connection of base structure 1, a pair of connecting structure 2 and a pair of external structure 3 is handled, the distance of the two end surfaces of shaft coupling is shortened, the overall size is reduced, and it is favorable to use in the environment of limited space.

[0033] The above is only the preferred embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art in the technical range disclosed by the utility model, according to the technical scheme and the utility model concept of the utility model, equivalent replacement or change are covered in the protection scope of the utility model.

Claims

1. A universal joint comprising a base structure (1), a pair of connecting structures (2) and a pair of external structures (3), the connecting structures (2) being for connecting the base structure (1) and the pair of external structures (3), characterized in that: The base structure (1) comprises a base ring (11), the connecting structure (2) comprises a connecting ring (21), the external structure (3) comprises a structure cylinder (31), the base ring (11) is arranged between a pair of connecting rings (21), and the structure cylinder (31) is arranged in the adjacent connecting ring (21).

2. A universal coupling according to claim 1 wherein: A pair of fixed connecting strips (12) are symmetrically and fixedly arranged on the outer side wall of the base ring (11), and the base ring (11) is vertically arranged with the fixed connecting strip (12).

3. A universal joint according to claim 2, wherein: Two pairs of fixed columns (22) are symmetrically arranged on the outer side wall of the connecting ring (21), a pair of connecting holes (13) are symmetrically arranged on the fixed connecting strip (12), and the two pairs of fixed columns (22) are correspondingly arranged in the two connecting holes (13).

4. A universal joint according to claim 3, wherein: A pair of L-shaped mounting blocks (32) are symmetrically and rotatably arranged on the outer side wall of the structure cylinder (31), the L-shaped mounting block (32) comprises a horizontal section (321) and a vertical section (322), the horizontal section (321) is rotatably connected with the outer side wall of the structure cylinder (31), and the vertical section (322) is fixedly connected with the horizontal section (321).

5. A universal joint according to claim 4, wherein: Mounting holes (33) are arranged on the vertical section (322) and correspond to the other pair of fixed columns (22).

6. A universal joint according to claim 5, wherein: Polyurethane bushings are fixedly arranged on the inner side wall of the connecting ring (21).

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