Monostable electromagnetic clutch

Abstract

This application discloses a monostable electromagnetic clutch, including a movable part, a magnetic assembly, a fixed disk, and several iron cores. The magnetic assembly is connected to the fixed disk, and the iron cores pass through the magnetic assembly and are connected to the fixed disk. An elastic component is provided on the movable part. Under the action of the electromagnetic force of the magnetic assembly and the elastic force of the elastic component, the movable part can reciprocate on one side of the magnetic assembly, keeping the movable part engaged or disengaged from the iron cores. This application features a flexible and compact structural design, allowing for different combinations depending on the application and available space. It can be used individually or in combination of several basic electromagnetic clutch units. After combination, it can be freely arranged in various installation positions and spaces according to requirements, fully optimizing the use of space.

Description

Technical Field

[0001] This invention belongs to the field of clutch technology, and specifically relates to a monostable electromagnetic clutch. Background Technology

[0002] There are various application scenarios in the power systems of new energy vehicles that require switching mechanisms, such as gear shifting, disengaging, locking, and parking. Electromagnetic clutches are a superior choice for realizing the switching mechanism functions. With the continuous development of the new energy vehicle industry, the performance requirements for electromagnetic clutches are also increasing. However, current traditional electromagnetic clutches have disadvantages such as complex overall structure, lack of compactness, large space occupation, limited application scenarios, and relatively limited layout and installation positions, which to some extent affect the spatial configuration of various components in the power systems of new energy vehicles. Summary of the Invention

[0003] In view of the above background, the present invention discloses a monostable electromagnetic clutch to overcome or at least partially solve the above problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a monostable electromagnetic clutch, comprising a movable part, a magnetic component, a fixed disk, and several iron cores, wherein the magnetic component is connected to the fixed disk, the iron cores pass through the magnetic component and are connected to the fixed disk, and the movable part is provided with an elastic component. Under the action of the electromagnetic force of the magnetic component and the elastic force of the elastic component, the movable part can reciprocate on one side of the magnetic component, so that the movable part and the iron cores are engaged or disengaged.

[0005] Preferably, the movable component has several recessed platforms on the side near the magnetic component, and the shape of the recessed platforms matches the shape of the end face of the iron core so that the end face of the iron core can fit into the recessed platforms. The elastic component is located on the other side of the movable component.

[0006] Preferably, the movable component is a movable disk, and the sink is located on the side of the movable disk near the magnetic component.

[0007] Preferably, the elastic component is a return spring assembly, which can be a linear spring, a non-linear spring, or a spring assembly composed of linear and non-linear springs.

[0008] Preferably, the magnetic component includes an electromagnetic coil and a coil frame wrapped around the iron core, the coil frame being used to fix the electromagnetic coil.

[0009] Preferably, a protrusion is provided around the iron core, and the electromagnetic coil and coil frame are disposed between the protrusion and the fixed plate.

[0010] Preferably, the iron core is cylindrical, and the magnetic components are arranged around the periphery of the iron core.

[0011] Preferably, the protrusion is arranged around the periphery of the iron core, and the magnetic component is engaged between the protrusion and the fixed disk.

[0012] Preferably, the iron core is connected to the fixed plate by a fixing pin.

[0013] Preferably, the monostable electromagnetic clutch includes two magnetic components, two iron cores, two fixing pins, a fixing disc, and several elastic components.

[0014] The advantages and beneficial effects of this application are as follows: This application adopts a modular design, integrating moving parts, fixed disk, magnetic components, elastic components, iron core, etc. into a basic unit of electromagnetic clutch; the structural design of this application is flexible and compact, and can be combined in different ways according to different applications and different structural spaces. It can be used alone or by freely combining several basic electromagnetic clutch units. After combination, it can be freely arranged in various installation positions and spaces according to needs; in terms of distribution space, it can be evenly distributed, symmetrically distributed, asymmetrically distributed, etc., according to actual needs, so as to fully optimize the use of space. Attached Figure Description

[0015] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0016] Figure 1 This is a cross-sectional view of the monostable electromagnetic clutch of this application in the disengaged state;

[0017] Figure 2 This is a cross-sectional view of the monostable electromagnetic clutch of this application in the engaged state;

[0018] Figure 3 This application illustrates a combined application of a monostable electromagnetic clutch.

[0019] Figure 4 , Figure 5 Example 2 of this application is a combined application of a monostable electromagnetic clutch.

[0020] In the diagram: 1. Fixed plate; 2. Iron core; 3. Fixed pin; 4. Coil frame; 5. Electromagnetic coil; 6. Moving part; 7. Elastic part; 8. Bearing; 9. L-shaped movable push plate; 10. Anti-rotation pin; 11. Anti-rotation pin; 12. End face gear plate; 13. Differential housing; 14. Differential inner housing; 15. Pressure ring; 16. Half shaft gear; 17. Planetary gear shaft; 18. Planetary gear; 19. Half shaft gear; 20. Protrusion; 61. Sunk; 100. Magnetic assembly. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0022] The technical solutions of various embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Figure 1 and Figure 2 As shown, the monostable electromagnetic clutch of this application includes a movable part 6, a magnetic assembly 100, a fixed disk 1, and several iron cores 2. The magnetic assembly 100 is connected to the fixed disk 1, and the iron cores 2 pass through the magnetic assembly 100 and are connected to the fixed disk 1. An elastic member 7 is provided on the movable part 6. When the magnetic assembly 100 is energized, it generates electromagnetic force. Under the action of the electromagnetic force of the magnetic assembly 100 and the elastic force of the elastic member 7, the movable part 6 can reciprocate on one side of the magnetic assembly 100, keeping the movable part 6 engaged or disengaged from the iron cores 2. When the magnetic assembly is energized, under the action of the electromagnetic force, see... Figure 2 When the movable part 6 is attracted to a position close to the iron core 2, the electromagnetic clutch is engaged; when the magnetic component is not energized, the movable part 6 is reset under the elastic force of the elastic part 7, see Figure 1 At this time, the moving part 6 is not engaged with the iron core 2, and the electromagnetic clutch is in the disengaged state.

[0023] In one embodiment of this application, such as Figure 1 As shown, several recessed platforms 61 are provided on the side of the movable component 6 near the magnetic assembly 100. The shape of the recessed platform 61 matches the shape of the end face of the iron core 2, so that the end face of the iron core 2 can fit into the recessed platform 61. When the end face of the iron core fits into the recessed platform, the electromagnetic clutch is in the engaged state; when the two are not engaged, the electromagnetic clutch is in the disengaged state. The working process of this embodiment is as follows: When the magnetic assembly 100 is not energized, refer to... Figure 1 When the moving part 6 is not engaged with the iron core, the electromagnetic clutch is in an open or disengaged state; when the magnetic assembly 100 is energized, refer to Figure 2 The electromagnetic force generated at this time attracts the movable part 6 to a position close to the iron core 2. The elastic part 7 on the other side of the movable part 6 is stretched at this time. The electromagnetic force is greater than the elastic force, keeping the electromagnetic clutch engaged. After the magnetic component is de-energized, the electromagnetic force disappears, and the movable part 6 will return to its original position. Figure 1 The state of the electromagnetic clutch shown is repeated in this cycle. Preferably, in order to further enhance the connection stability, in one embodiment of this application, the iron core 2 is connected to the fixed plate 1 by a fixing pin 3.

[0024] In one embodiment of this application, the movable component 6 is configured as a space-saving disc-shaped structure, that is, a movable disc. The recessed platform 61 is opened on the side of the movable disc near the magnetic component 100, corresponding to the end face position of the iron core 2, and the elastic component 7 is disposed on the other side of the movable disc.

[0025] In one embodiment of this application, the elastic component 7 is preferably a return spring assembly, which may be a linear spring, a nonlinear spring, or a spring assembly composed of linear and nonlinear springs.

[0026] In one embodiment of this application, the magnetic component 100 includes an electromagnetic coil 5 and a coil frame 4 wrapped around an iron core, the coil frame 4 being used to fix the electromagnetic coil 5.

[0027] In one embodiment of this application, a protrusion 20 is further provided around the core 2. The electromagnetic coil 5 and the coil frame 4 are disposed between the protrusion 20 and the fixing disk 1, and the protrusion 20 is used to hold the magnetic component 100 in place to prevent it from falling off. In a more preferred embodiment, the core 2 is made into a cylindrical shape, and the magnetic component 100 is disposed around the periphery of the core 2. The protrusion 20 is also disposed around the periphery of the core 2. The surrounding protrusion 20 can better engage the magnetic component 100 between the protrusion 20 and the fixing disk 1.

[0028] In a preferred embodiment of this application, a basic unit of a monostable electromagnetic clutch includes two magnetic components 100, two iron cores 2, two fixing pins 3, a fixing disc 1, and several elastic components 7. This embodiment's basic electromagnetic clutch unit has fewer components, a simple structure, and does not occupy much space. It can be used individually or in combination of several basic electromagnetic clutch units, including but not limited to applications in the following scenarios.

[0029] Example 1

[0030] Reference Figure 3 In this embodiment, two basic electromagnetic clutch units are arranged symmetrically to form a symmetrical electromagnetic clutch structure. The fixed disc 1 and the moving part 6 are both integrated into a single, integral component. This embodiment is applicable to situations where circumferential space is limited and axial space is small.

[0031] Example 2

[0032] Reference Figure 4 and Figure 5This embodiment applies Example 1 to the splitting function. In this embodiment, the electromagnetic clutch from Example 1 is mounted on one side of the differential. The movable part 6 is connected to the L-shaped movable push plate 9 via bearing 8, ensuring that the movable component of the electromagnetic clutch body only undergoes axial linear motion. To restrict the circumferential rotation and other degrees of freedom of the movable component of the electromagnetic clutch body, this embodiment also provides anti-rotation pins 10 and 11 on the movable part 6. The anti-rotation pins 10 and 11 are fixed, restricting the movable component to only axial movement. The L-shaped movable push plate 9 is connected to the end face gear plate 12 via bolts, pins, or protrusions on the L-shaped movable push plate 9 / end face gear plate 12. The connection passes through the differential housing. A key is provided on the outer edge of the end face gear plate, and the differential housing is equipped with corresponding keyways. During rotation, the differential transmits speed and torque by connecting the end face gears via the key.

[0033] like Figure 4 The differential inner housing 14 shown has end face teeth that can mesh with the end face teeth on the end face gear plate 12. An elastic component is provided between the end face gear plate 12 and the pressure ring 15. When the electromagnetic clutch is disengaged, the elastic component between the end face gear plate 12 and the pressure ring 15 keeps the end face teeth on the end face gear plate 12 and the end face teeth on the differential inner housing 14 separated. At this time, the differential inner housing works independently, and the differential outer housing cannot transmit energy to the half-shaft gears 16 and 19.

[0034] When an excitation current is applied to the electromagnetic coil 5, the electromagnetic clutch engages. The movable component 6 moves towards the electromagnetic coil 5, and through the bearing 8, pushes the L-shaped movable push plate 9. The L-shaped movable push plate 9, through the connecting part, pushes the end face gear plate 12 towards the differential inner housing 14, ultimately engaging the end face gear plate 12 with the end face teeth of the differential inner housing 14. The movable component stops after reaching the limiting devices on the differential housing 13 and the L-shaped movable push plate 9, at which point the differential lock is engaged. In the engaged state, there is no relative movement between the differential inner housing 14 and the differential housing 13. The torque and speed transmitted to the differential housing are then transferred from the end face gear plate 12 to the differential inner housing 14, and further transmitted to the half-shaft gears 16 and 19 via the planetary gears 18 and planetary gear shaft 17.

[0035] The above description is merely a specific embodiment of the present invention. Under the teachings of the present invention, those skilled in the art can make other improvements or modifications based on the above embodiments. Those skilled in the art should understand that the above specific description is only to better explain the purpose of the present invention, and the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A monostable electromagnetic clutch, comprising a movable part (6), a magnetic assembly (100), a fixed disc (1), and a plurality of iron cores (2), characterized in that, The magnetic assembly (100) is connected to the fixed disk (1), the iron core (2) passes through the magnetic assembly (100) and is connected to the fixed disk (1), and the movable part (6) is provided with an elastic part (7). Under the action of the electromagnetic force of the magnetic component (100) and the elastic force of the elastic component (7), the movable component (6) can reciprocate on one side of the magnetic component (100), so that the movable component (6) and the iron core (2) remain engaged or disengaged. The movable component (6) has several recessed platforms (61) on one side near the magnetic component (100). The shape of the recessed platform (61) matches the shape of the end face of the iron core (2), so that the end face of the iron core (2) can fit into the recessed platform (61). The elastic component (7) is disposed on the other side of the movable component (6).

2. The monostable electromagnetic clutch as described in claim 1, characterized in that, The movable component is a movable disk, and the sinking platform is located on the side of the movable disk near the magnetic component.

3. The monostable electromagnetic clutch as described in claim 1, characterized in that, The elastic component is a return spring assembly, which can be a linear spring, a nonlinear spring, or a spring assembly composed of linear and nonlinear springs.

4. The monostable electromagnetic clutch as described in claim 1, characterized in that, The magnetic component includes an electromagnetic coil and a coil frame wrapped around the iron core, the coil frame being used to fix the electromagnetic coil.

5. The monostable electromagnetic clutch as described in claim 4, characterized in that, The iron core is also provided with a protrusion, and the electromagnetic coil and the coil frame are disposed between the protrusion and the fixed plate.

6. The monostable electromagnetic clutch as described in claim 5, characterized in that, The iron core is cylindrical, and the magnetic components are arranged around the periphery of the iron core.

7. The monostable electromagnetic clutch as described in claim 6, characterized in that, The protrusion is arranged around the periphery of the iron core, and the magnetic component is engaged between the protrusion and the fixed disk.

8. The monostable electromagnetic clutch as described in any one of claims 1-7, characterized in that, The iron core is connected to the fixed plate by a fixing pin.

9. The monostable electromagnetic clutch as described in claim 1, characterized in that, It includes two magnetic components, two iron cores, two fixing pins, a fixing plate, and several elastic parts.

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