Miniature hollow shaft magnetic powder clutch

Abstract

The utility model relates to the technical field of clutches, in particular to a miniature hollow shaft magnetic powder clutch which comprises a rotary drum, a left coil seat and a right coil seat are symmetrically arranged on the inner wall of the rotary drum, and a rotary drum gland is arranged under the right coil seat and located on the outer wall of the rotary drum. Wherein a left large bearing is arranged between the left coil seat and the rotary drum and located on the inner wall of the rotary drum, a right large bearing is arranged between the right coil seat and the rotary drum gland and located on the outer wall of the rotary drum gland, and a right large clamping spring is installed on one side of the right large bearing and located on the outer wall of the rotary drum gland in an embedded mode. According to the utility model, the hollow shaft rotor is sleeved on the material shaft of the equipment through the shaft hole, and the key slot is arranged on the inner wall of the shaft hole and is used for fixing the material shaft, so that the hollow shaft rotor is further fixed on the outer wall of the material shaft, the installation mode is simpler and more convenient, other connecting pieces are not needed for fixing, and the practicability is better.

Description

Technical Field

[0001] This utility model relates to the field of clutch technology, specifically a miniature hollow shaft magnetic powder clutch. Background Technology

[0002] Miniature magnetic powder clutches are clutch devices that use electromagnetic principles and magnetic powder to transmit torque. They have advantages such as fast response speed, no pollution, no noise, no impact vibration, and energy saving. They are widely used in printing, lamination, packaging, papermaking, and textile industries. However, the output structure design of existing miniature magnetic powder clutches is that they have their own output shaft. The output shaft and rotor are combined into one piece by welding or riveting. The main problems are complex processing, many steps, poor processing efficiency and cost. Customers also need more connecting parts when using and installing them, which makes the connection complex and increases costs.

[0003] Therefore, a miniature hollow shaft magnetic powder clutch is needed to improve the above problems. Utility Model Content

[0004] This invention addresses the aforementioned shortcomings of existing technologies by providing a miniature hollow shaft magnetic powder clutch.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A miniature hollow shaft magnetic powder clutch includes a rotating drum. A left coil seat and a right coil seat are symmetrically arranged on the inner wall of the rotating drum. A rotating drum cover is located directly below the right coil seat and on the outer wall of the rotating drum. A left large bearing is located between the left coil seat and the rotating drum and on the inner wall of the rotating drum. A right large bearing is located between the right coil seat and the rotating drum cover and on the outer wall of the rotating drum cover. A right large retaining ring is embedded on one side of the right large bearing and on the outer wall of the rotating drum cover. A wire box is located between the left and right coil seats, and a copper coil is located on the inner wall of the wire box. A left small bearing is located on the outer wall of the rotating drum, and a right small bearing is located on the outer wall of the rotating drum cover at a position corresponding to the left small bearing. A hollow shaft rotor is rotatably connected to the inner wall of the rotating drum. A shaft hole is located on the inner wall of the hollow shaft rotor, and a keyway is located on one side of the shaft hole and on the inner wall of the hollow shaft rotor.

[0007] As a preferred embodiment of this utility model, a left retaining ring is provided on one side of the left small bearing and on the outer wall of the hollow shaft rotor.

[0008] As a preferred embodiment of this utility model, a right small retaining ring is provided on one side of the right small bearing and on the outer wall of the hollow shaft rotor.

[0009] As a preferred embodiment of this utility model, a left sealing ring and a right sealing ring are respectively provided between the hollow shaft rotor and the rotating drum and at both ends of the hollow shaft rotor.

[0010] As a preferred embodiment of this utility model, the hollow shaft rotor has a circumferential groove on its circumferential surface, and the magnetic gap space is formed by the rotating drum, the rotating drum cover, the left sealing ring, the right sealing ring, and the circumferential groove of the hollow shaft rotor, and magnetic powder is disposed inside the magnetic gap space.

[0011] As a preferred embodiment of this utility model, the rotating drum and the rotating drum cover are pressed together to form a whole, and the hollow shaft rotor is made of low carbon steel or pure iron.

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

[0013] In this invention, a hollow shaft rotor in a miniature hollow shaft magnetic powder clutch is used. The hollow shaft rotor is sleeved onto the material shaft of the equipment through the shaft hole. At the same time, since a keyway is opened on the inner wall of the shaft hole, the keyway fixes the material shaft, thereby fixing the hollow shaft rotor to the outer wall of the material shaft. The installation method is simpler and more portable, without the need for other connecting parts for fixation, and the practicality is better. This helps to solve the problem that the output structure design of existing miniature magnetic powder clutches is that they have their own output shaft. The output shaft and rotor are combined into one piece by welding or riveting. The main problems are complex processing, many processes, poor processing efficiency and cost. Customers also need more connecting parts when using and installing, which is complicated and increases costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the hollow shaft rotor structure of this utility model.

[0016] In the diagram: 1. Rotating drum; 2. Left coil holder; 3. Right coil holder; 4. Rotating drum cover; 5. Left large bearing; 6. Right large bearing; 7. Right large snap ring; 8. Wire box; 9. Copper coil; 10. Left small bearing; 11. Right small bearing; 12. Hollow shaft rotor; 13. Shaft hole; 14. Keyway; 15. Left snap ring; 16. Right small snap ring; 17. Left sealing ring; 18. Right sealing ring; 19. Magnetic powder. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] For examples, please refer to Figure 1-2 This utility model provides a technical solution:

[0019] A miniature hollow shaft magnetic powder clutch includes a rotating drum 1. A left coil seat 2 and a right coil seat 3 are symmetrically arranged on the inner wall of the rotating drum 1. A rotating drum cover 4 is located directly below the right coil seat 3 and on the outer wall of the rotating drum 1. A left large bearing 5 is located between the left coil seat 2 and the rotating drum 1, on the inner wall of the rotating drum 1. A right large bearing 6 is located between the right coil seat 3 and the rotating drum cover 4, on the outer wall of the rotating drum cover 4. A right... A large retaining ring 7 is provided between the left coil seat 2 and the right coil seat 3. A wire box 8 is provided on the inner wall of the wire box 8. A left small bearing 10 is provided on the outer wall of the rotating drum 1. A right small bearing 11 is provided on the outer wall of the rotating drum cover 4 at a position corresponding to the left small bearing 10. A hollow shaft rotor 12 is rotatably connected to the inner wall of the rotating drum 1. A shaft hole 13 is provided on the inner wall of the hollow shaft rotor 12. A keyway 14 is provided on one side of the shaft hole 13 and on the inner wall of the hollow shaft rotor 12.

[0020] In this embodiment, please refer to Figure 1 and Figure 2 A left retaining ring 15 is provided on one side of the left small bearing 10 and on the outer wall of the hollow shaft rotor 12, and a right small retaining ring 16 is provided on one side of the right small bearing 11 and on the outer wall of the hollow shaft rotor 12. A left sealing ring 17 and a right sealing ring 18 are respectively provided between the hollow shaft rotor 12 and the rotating cylinder 1 and at both ends of the hollow shaft rotor 12. The circumferential surface of the hollow shaft rotor 12 has a circumferential groove. The rotating cylinder 1, the rotating cylinder cover 4, the left sealing ring 17, the right sealing ring 18, and the circumferential groove of the hollow shaft rotor 12 form a magnetic gap space. Magnetic powder 19 is provided inside the magnetic gap space. The rotating cylinder 1 and the rotating cylinder cover 4 are pressed together to form a whole. The hollow shaft rotor 12 is made of 304 stainless steel.

[0021] Furthermore, the rotating drum cover 4 is connected to the right end of the rotating drum 1. After the rotating drum 1 and the rotating drum cover 4 are pressed together, they are combined into one unit. The rotating drum 1 has a hollow shaft rotor 12 inside. The hollow shaft rotor 12 has a circumferential groove on its circumferential surface. The rotating drum 1, the rotating drum cover 4, the left sealing ring 17, the right sealing ring 18, and the circumferential groove of the hollow shaft rotor 12 form a magnetic gap space. Magnetic powder 19 is provided inside the magnetic gap space. Under the mutual shielding of the rotating drum 1, the rotating drum cover 4, the left sealing ring 17, and the right sealing ring 18, the magnetic powder 19 in this magnetic gap space is blocked, so that the magnetic powder 19 is not easy to leak to the oil seal, which can effectively reduce the failure rate of the product during operation.

[0022] The working process of this utility model is as follows: When the hollow shaft micro magnetic powder clutch designed in this scheme is working, a hollow shaft rotor 12 is rotatably connected to the inner wall of the rotating drum 1. A shaft hole 13 is provided on the inner wall of the hollow shaft rotor 12, and a keyway 14 is provided on one side of the shaft hole 13 and on the inner wall of the hollow shaft rotor 12. When the device is in use, it is only necessary to sleeve the hollow shaft rotor 12 onto the material shaft of the equipment through the shaft hole 13. At the same time, since the keyway 14 is provided on the inner wall of the shaft hole 13, the keyway 14 fixes the material shaft, thereby fixing the hollow shaft rotor 12 to the outer wall of the material shaft. The installation method is simpler and more portable, without the need for other connecting parts for fixation, and the practicality is better. This is beneficial to solving the problem that the output structure design of the existing micro magnetic powder clutch is that it has its own output shaft. The output shaft and rotor are combined into one piece by welding or riveting. The main problems are complex processing, many processes, poor processing efficiency and cost. Customers also need more connecting parts when using and installing it, which is complicated and increases costs.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A miniature hollow shaft magnetic powder clutch, comprising a rotating drum (1), characterized in that: A left coil seat (2) and a right coil seat (3) are symmetrically arranged on the inner wall of the rotating cylinder (1). A rotating cylinder cover (4) is arranged directly below the right coil seat (3) and on the outer wall of the rotating cylinder (1). A left large bearing (5) is arranged between the left coil seat (2) and the rotating cylinder (1) and on the inner wall of the rotating cylinder (1). A right large bearing (6) is arranged between the right coil seat (3) and the rotating cylinder cover (4) and on the outer wall of the rotating cylinder cover (4). A right large retaining ring (7) is embedded on one side of the right large bearing (6) and on the outer wall of the rotating cylinder cover (4). The left coil seat... (2) A wire box (8) is provided between the right coil seat (3) and the right coil seat (3), and a copper coil (9) is provided on the inner wall of the wire box (8). A left small bearing (10) is provided on the outer wall of the rotating drum (1), and a right small bearing (11) is provided on the outer wall of the rotating drum cover (4) at a position corresponding to the left small bearing (10). A hollow shaft rotor (12) is rotatably connected to the inner wall of the rotating drum (1). A shaft hole (13) is provided on the inner wall of the hollow shaft rotor (12), and a keyway (14) is provided on one side of the shaft hole (13) and on the inner wall of the hollow shaft rotor (12).

2. The miniature hollow shaft magnetic powder clutch according to claim 1, characterized in that: A left retaining ring (15) is provided on one side of the left small bearing (10) and on the outer wall of the hollow shaft rotor (12).

3. A miniature hollow shaft magnetic powder clutch according to claim 1, characterized in that: A right small retaining ring (16) is provided on one side of the right small bearing (11) and on the outer wall of the hollow shaft rotor (12).

4. A miniature hollow shaft magnetic powder clutch according to claim 1, characterized in that: A left sealing ring (17) and a right sealing ring (18) are respectively provided between the hollow shaft rotor (12) and the drum (1) and at both ends of the hollow shaft rotor (12).

5. A miniature hollow shaft magnetic powder clutch according to claim 4, characterized in that: The hollow shaft rotor (12) has a circumferential groove on its circumferential surface. The rotating drum (1), the rotating drum cover (4), the left sealing ring (17), the right sealing ring (18), and the circumferential groove of the hollow shaft rotor (12) form a magnetic gap space. Magnetic powder (19) is placed inside the magnetic gap space.

6. A miniature hollow shaft magnetic powder clutch according to claim 1, characterized in that: The rotating drum (1) and the rotating drum cover (4) are pressed together to form a whole, and the hollow shaft rotor (12) is made of low carbon steel or pure iron.

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