A new electromagnetic clutch structure

Abstract

The present application relates to a new electromagnetic clutch structure, belongs to the clutch technical field. Including the shell, fixed end face tooth and movable end face tooth are arranged in the shell respectively, fixed end face tooth axial stationary;Magnetic yoke seat is set on the shell and is wrapped, the coil is wound in the magnetic yoke seat;Movable armature is also set on the shell and is wrapped, and the movable armature corresponds outside the magnetic yoke seat, and the movable armature can slide on the shell;The elastic baffle ring for shaft is arranged on the outside of the magnetic yoke cover plate and is abutted;Reset spring is arranged between movable end face tooth and fixed end face tooth;Push ring is arranged between movable armature and movable end face tooth;The surface of the shell is provided with a through hole, and the end surface of the push ring is pushed through the through hole to drive the movable end face tooth.This technical scheme is widely used in automobile differential lock, segmentation, gear shifting and other functions, can be highly integrated with motor, reducer and other functions, forms modular unit, has the advantages of fast response, high reliability and stability, small size, light weight, simple structure, flexible arrangement and the like.

Description

Technical Field

[0001] This invention relates to a novel electromagnetic clutch structure, belonging to the field of clutch technology. Background Technology

[0002] With the rapid development of automotive electrification and intelligence, electromagnetic clutches are being used more and more widely in automobiles. Currently, electromagnetic clutch structures mostly adopt... Figure 1 The structure shown is complex, bulky, difficult to arrange, slow in response, prone to friction and overheating, and has low reliability and stability. This invention provides a novel electromagnetic clutch structure with advantages such as fast response, high reliability and stability, small size and light weight, flexible arrangement, and simple structure.

[0003] like Figure 5 The diagram illustrates a traditional electric clutch structure used in a differential lock. The coil assembly is fixed to the differential housing via a coil pressure plate. When energized, the coil assembly drives the sliding sleeve assembly, which in turn engages the engagement teeth of the half-shaft gear to lock the differential. Upon de-energization, a wave spring drives the sliding sleeve assembly and engagement teeth back to their pre-lock position, unlocking the differential. However, the coil assembly's energization results in a slow response time, a complex structure, a large coil assembly, and a tendency for overheating due to friction between the coil assembly and the differential housing, leading to low reliability and stability. Summary of the Invention

[0004] The purpose of this invention is to provide a novel electromagnetic clutch structure to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A novel electromagnetic clutch structure includes a housing, within which are fixed end face teeth and movable end face teeth, the fixed end face teeth being axially stationary; a magnetic yoke seat is fitted onto the housing, and a coil is wound inside the magnetic yoke seat; a movable armature is also fitted onto the housing, corresponding to the outer side of the magnetic yoke seat, and the movable armature can slide on the housing; a magnetic yoke cover plate is provided on the outer side of the movable armature, and the magnetic yoke cover plate is also fitted and fixed onto the housing; a return spring is provided between the movable end face teeth and the fixed end face teeth; a push ring is provided between the movable armature and the movable end face teeth; a through hole is provided on the surface of the housing that mates with the movable end face teeth, and one end face of the push ring pushes the movable end face teeth through the through hole.

[0006] A further improvement to this technical solution is that the coil is sealed and fixed inside the magnetic yoke by potting compound.

[0007] A further improvement to this technical solution is that the magnetic yoke seat is provided with an anti-rotation pin to prevent the magnetic yoke seat from rotating, and the anti-rotation pin fixes the magnetic yoke seat to the housing.

[0008] A further improvement to this technical solution is that gaps are provided between the magnetic yoke seat and the housing, and between the magnetic yoke seat and the magnetic yoke cover plate.

[0009] A further improvement to this technical solution is that the movable armature has an L-shaped cross-section, and the magnetic yoke seat and magnetic yoke cover plate have an L-shaped cross-section that mates with the movable armature.

[0010] A further improvement to this technical solution is as follows: a through hole is provided on the surface of the housing that mates with the movable end face teeth; a number of protruding push feet are provided on one end face of the push ring, and the push feet push the movable end face teeth through the through hole.

[0011] A further improvement to this technical solution is that an elastic retaining ring for the shaft is installed on the outer side of the magnetic yoke cover plate.

[0012] Due to the adoption of the above technical solution, the technical effects achieved by this invention are as follows: This technical solution is a novel electromagnetic clutch structure that can be widely used in automotive differential locks, gear shifting, and other functions. It can be highly integrated with motors, reducers, and other components to form a modular unit, and has advantages such as fast response speed, high reliability and stability, small size, light weight, simple structure, and flexible layout.

[0013] This technical solution, through the cooperation of the magnetic yoke seat, coil, movable armature and push ring, can push the movable end face tooth to achieve docking with the fixed end face tooth. At the same time, under the action of the return spring, the movable end face tooth can promptly and smoothly move away from the fixed end face tooth after power is cut off, thus achieving separation. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the present invention; Figure 2 This is a partial cross-sectional view of the present invention; Figure 3 This is a side perspective view of the present invention; Figure 4 This is a schematic diagram of the exploded structure of the electromagnetic clutch of the present invention; Figure 5 This is a schematic diagram of existing technology; Among them, 1. Magnetic yoke seat, 2. Coil, 3. Potting compound, 4. Anti-rotation pin, 5. Magnetic yoke cover plate, 6. Movable armature, 7. Shaft elastic retaining ring, 8. Housing, 9. Push ring, 10. Fixed end face teeth, 11. Return spring, 12. Movable end face teeth. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0016] In the description of this invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0017] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0018] This invention is a novel electromagnetic clutch structure that can be applied to vehicles, especially new energy vehicles.

[0019] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the electromagnetic clutch mainly includes a housing 8, within which are fixed end face teeth 10 and movable end face teeth 12. The fixed end face teeth 10 are axially stationary, while the movable end face teeth 12 can move axially. Corresponding surfaces of the fixed end face teeth 10 and the movable end face teeth 12 have mating teeth. When the movable end face teeth 12 move toward the fixed end face teeth 10, and the two are mated, the clutch is engaged. When the movable end face teeth 12 move away from the fixed end face teeth 10, and a gap forms between them, the clutch is disengaged.

[0020] like Figure 1 , Figure 2 As shown, a magnetic yoke seat 1 is fitted onto the outer surface 1 of the housing, and a coil 2 is evenly wound inside the magnetic yoke seat 1. Furthermore, preferably, potting compound 3 is provided on the outside of the coil 2, so that the coil 2 can be sealed and fixed inside the magnetic yoke seat 1 by the potting compound 3.

[0021] A movable armature 6 is also fitted onto the housing 1. The movable armature 6 corresponds to the outside of the magnetic yoke 1 and can slide on the housing 1. When the coil 2 is energized, an electromagnetic field is generated between the magnetic yoke 1 and the movable armature 6. Under the action of electromagnetic force, the movable armature 6 can move towards the magnetic yoke 1.

[0022] A magnetic yoke cover plate 5 is also provided on the outside of the movable armature 6, and the magnetic yoke cover plate 5 is also fitted onto the housing 8. A shaft elastic retaining ring 7 is provided on the outside of the magnetic yoke cover plate 5. Specifically, a retaining ring groove is provided on the surface of the housing 8, and the shaft elastic retaining ring 8 is fitted into the retaining ring groove, which at the same time limits and fixes the magnetic yoke cover plate 5. The magnetic yoke cover plate 5 encloses the movable armature 6 and the coil 2. Furthermore, an anti-rotation pin 4 is provided on the magnetic yoke seat 1, which is axially inserted through the magnetic yoke seat 1 and further inserted into the housing 8. The anti-rotation pin 4 fixes the magnetic yoke seat 1 to the housing 8, thus preventing the magnetic yoke seat 1 from rotating.

[0023] The fixed end face tooth 10 is axially fixed, while the movable end face tooth 12 can move axially. A return spring 11 is provided between the movable end face tooth 12 and the fixed end face tooth 10. The return spring 11 has a certain amount of compression, which can cause the movable end face tooth 12 to return to its original position. During the movement of the movable end face tooth 12 toward the fixed end face tooth 10, it is necessary to overcome the elastic force of the return spring 11 and further compress the return spring 11.

[0024] To enable the movable armature 6 to effectively push the movable end face tooth 12, a push ring 9 is provided between the movable armature 6 and the movable end face tooth 12. For example... Figure 1 , Figure 3 As shown, the push ring 9 is also fitted onto the housing 8. Specifically, on the end face of the housing 8, a through hole is provided on the surface that mates with the movable end face tooth 12. Several push feet are provided on one end face of the push ring 9. The outer ends of these push feet directly abut against the end face of the movable end face tooth 12. During operation, these push feet push the movable end face tooth 12 through the through hole. The push feet on the push ring 9 are protruding parts. Furthermore, a boss is typically provided on the end face of the movable end face tooth 12, with each boss corresponding to a through hole and also to a push foot on the push ring 9; this allows the push ring 9 to more effectively push the movable end face tooth 12.

[0025] In specific implementation, gaps are provided between the magnetic yoke seat 1 and the housing 8, and between the magnetic yoke seat 1 and the magnetic yoke cover plate 5. This can reduce friction and wear between the magnetic yoke seat 1 and the housing 8, and between the magnetic yoke seat 1 and the magnetic yoke cover plate 5 during vehicle operation, thereby improving service life and stability.

[0026] like Figure 2 As shown, the movable armature 6 has an L-shaped cross-section, and the magnetic yoke seat 1 and magnetic yoke cover plate 5 are also provided with L-shaped structures that cooperate with the movable armature 6. This structure can ensure that the movable armature 6 can obtain a large electromagnetic force when the coil 2 is energized, thereby ensuring the effective and reliable operation of the electromagnetic clutch.

[0027] The electromagnetic clutch operates as follows: When coil 2 is energized, an electromagnetic field is generated between yoke 1 and movable armature 6. Under the action of electromagnetic force, movable armature 6 moves towards yoke 1. At the same time, movable armature 6 pushes push ring 9 towards fixed end face tooth 10. Simultaneously, push ring 9 pushes movable end face tooth 12 towards fixed end face tooth 10 until the teeth of movable end face tooth 12 are fully engaged with the teeth of fixed end face tooth 10. During the process of movable end face tooth 12 moving towards fixed end face tooth 10, it is necessary to overcome the elastic force of return spring 11 and further compress return spring 11.

[0028] When coil 2 is de-energized, the electromagnetic field between yoke seat 1 and movable armature 6 disappears, and the electromagnetic force disappears. Under the elastic force of return spring 11, movable end face tooth 12 moves towards yoke cover plate 5. At the same time, movable end face tooth 12 pushes push ring 9 towards yoke cover plate 5, and push ring 9 pushes movable armature 6 towards yoke cover plate 5 until movable armature 6 contacts yoke cover plate 5.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A novel electromagnetic clutch structure, comprising a housing (8), wherein fixed end face teeth (10) and movable end face teeth (12) are respectively provided inside the housing (8), wherein the fixed end face teeth (10) are axially stationary; characterized in that: A magnetic yoke seat (1) is fitted onto the housing (1), and a coil (2) is wound inside the magnetic yoke seat (1). A movable armature (6) is also fitted onto the housing (1), and the movable armature (6) is located on the outside of the magnetic yoke seat (1). The movable armature (6) can slide on the housing (1). A magnetic yoke cover plate (5) is provided on the outside of the movable armature (6), and the magnetic yoke cover plate (5) is also fitted and fixed onto the housing (8). A return spring (11) is provided between the movable end face tooth (12) and the fixed end face tooth (10). A push ring (9) is provided between the movable armature (6) and the movable end face tooth (12). A through hole is provided on the surface of the housing (8) that is in contact with the movable end face tooth (12). One end face of the push ring (9) pushes the movable end face tooth (12) through the through hole.

2. The novel electromagnetic clutch structure according to claim 1, characterized in that: The coil (2) is sealed and fixed inside the yoke seat (1) by potting glue (3).

3. The novel electromagnetic clutch structure according to claim 1, characterized in that: The magnetic yoke seat (1) is provided with an anti-rotation pin (4) to prevent the magnetic yoke seat (1) from rotating. The anti-rotation pin (4) fixes the magnetic yoke seat (1) to the housing (8).

4. The novel electromagnetic clutch structure according to claim 1, characterized in that: There are gaps between the magnetic yoke seat (1) and the shell (1), and between the magnetic yoke seat (1) and the magnetic yoke cover plate (5).

5. The novel electromagnetic clutch structure according to claim 1, characterized in that: The movable armature (6) has an L-shaped cross-section, and the magnetic yoke seat (1) and magnetic yoke cover plate (5) are provided with L-shaped cross-sections that cooperate with the movable armature (6).

6. The novel electromagnetic clutch structure according to claim 1, characterized in that: A through hole is provided on the surface of the housing (1) that mates with the movable end face tooth (12); a number of protruding push feet are provided on one end face of the push ring (9), and the push feet push the movable end face tooth (12) through the through hole.

7. The novel electromagnetic clutch structure according to claim 1, characterized in that: The outer side of the magnetic yoke cover plate (5) abuts against the elastic retaining ring (7) for the shaft.

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