Electromagnetic clutch structure
The electromagnetic clutch structure, designed with a push ring unit and a permanent magnet, utilizes the magnetic field of the permanent magnet and the electromagnetic coil to achieve power transmission or interruption. This solves the energy loss and heat generation problems caused by continuous energization of the electromagnetic clutch, and has the advantages of fast response, low energy consumption and low heat generation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-09
- Publication Date
- 2026-04-14
AI Technical Summary
Existing electromagnetic clutches require continuous power to maintain engagement during operation, resulting in energy loss and heat generation, thus failing to achieve low energy consumption and low heat generation.
The design employs a push ring unit and a permanent magnet, which achieves power transmission or interruption through electromagnetic force without the need for power-on maintenance. Under the combined magnetic field of the permanent magnet and the electromagnetic coil, the push ring assembly drives the active engagement tooth to engage or disengage with the output tooth, thereby achieving power transmission or interruption.
The electromagnetic clutch structure achieves fast response, low energy consumption and low heat generation, eliminating the need for continuous energization and is compact and reliable.
Smart Images
Figure CN224120567U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of electromagnetic power control, specifically, it relates to an electromagnetic clutch structure. Background Technology
[0002] With increasingly stringent national emission standards for automobiles, hybrid technology has seen significant development. Hybrid technology requires transmissions to switch between different power sources or deliver hybrid outputs. Therefore, relevant mechanisms are needed to achieve this goal, leading to the development of electromagnetic clutches. Currently, electromagnetic clutches on the market require a continuous current to maintain engagement during operation, resulting in energy loss. Furthermore, the continuous energization of electromagnetic clutches generates heat, necessitating comprehensive consideration of heat dissipation.
[0003] To address the aforementioned issues, patent application number 2013207550022 discloses a dual-magnetic-circuit electromagnetic clutch, relating to the field of clutch technology. The clutch includes a clutch body, within which a baffle and an armature are installed in a magnetic yoke. The armature has six uniformly spaced first circumferential grooves along its circumference. The baffle has three uniformly spaced second circumferential grooves along its circumference in the middle. Three third circumferential grooves are located around the second circumferential grooves on the baffle and along its circumference. When the electromagnetic clutch is installed, the third circumferential grooves on the baffle and the armature combine with the magnetic yoke to form a first magnetic circuit; the second circumferential grooves on the baffle and the armature combine with the magnetic yoke to form a second magnetic circuit, thus creating a dual-magnetic-circuit clutch. However, this design fails to solve the aforementioned problems.
[0004] Therefore, in order to improve or solve at least one of the above problems, an electromagnetic clutch structure is provided that can transmit or interrupt power through electromagnetic force, without the need for energization, and has the effects of fast response, low energy consumption, and low heat generation. Utility Model Content
[0005] This utility model is designed to solve the aforementioned problems. Its purpose is to provide an electromagnetic clutch structure that can transmit or interrupt power through electromagnetic force, without requiring energization, and possesses advantages such as fast response, low energy consumption, and low heat generation. To achieve the above objective, the technical solution adopted by this utility model is as follows:
[0006] This utility model provides an electromagnetic clutch structure, which includes an input shaft, a push ring unit, an active engagement tooth, and an output tooth. The push ring unit is disposed on the input shaft, the active engagement tooth is disposed on the input shaft, and the output tooth is disposed on the input shaft.
[0007] The electromagnetic clutch structure provided by this utility model may also have the following features: the push ring unit includes an electromagnetic coil and a push ring assembly, the push ring assembly is movably sleeved on the input shaft, and the electromagnetic coil is disposed on the outside of the push ring assembly.
[0008] The electromagnetic clutch structure provided by this utility model may also have the following features: the push ring assembly includes an inner push ring, a first outer push ring, a second outer push ring, and a permanent magnet. The inner push ring, the first outer push ring, and the second outer push ring are connected by an interference fit, and the permanent magnet is connected to the inner push ring by a clearance fit.
[0009] The electromagnetic clutch structure provided by this utility model may also have the following features: the electromagnetic coil includes a copper wire winding and a housing, the housing is provided with a winding groove, the copper wire winding is arranged in the winding groove, and the housing is sleeved on the outside of the push ring assembly.
[0010] The electromagnetic clutch structure provided by this utility model may also have the following features: the active engagement tooth is provided with an internal spline, the internal spline is arranged along the axial direction perpendicular to the input shaft, and the input shaft is provided with a sliding groove that matches the internal spline.
[0011] The electromagnetic clutch structure provided by this utility model may also have the following features: the active engagement tooth is provided with an external spline, the external spline is arranged along the axial direction of the input shaft, and the output tooth is provided with a connecting spline that matches the external spline, and the external spline and the connecting spline mesh.
[0012] The electromagnetic clutch structure provided by this utility model may also have the following feature: when the electromagnetic coil is not energized, under the action of the permanent magnet magnetic field, the direction of the magnetic force on the push ring assembly is away from the output teeth, and the active engagement teeth and the output teeth remain disengaged.
[0013] The electromagnetic clutch structure provided by this utility model may also have the following features: the electromagnetic coil is energized with a positive current, and under the action of the common magnetic field of the permanent magnet and the electromagnetic coil, the direction of the magnetic force on the push ring assembly is towards the output tooth. The push ring assembly drives the active engagement tooth to move towards the output tooth, and the active engagement tooth meshes with the output tooth to realize power output.
[0014] The electromagnetic clutch structure provided by this utility model may also have the following feature: when the electromagnetic coil is energized with a reverse current, under the combined magnetic field of the permanent magnet and the electromagnetic coil, the direction of the magnetic force on the push ring assembly moves away from the output tooth, and the push ring assembly drives the active engagement tooth to move away from the output tooth, so that the active engagement tooth disengages from the output tooth and the power is interrupted.
[0015] The electromagnetic clutch structure provided by this utility model may also have the following feature: after the electromagnetic clutch is engaged, the electromagnetic coil is de-energized, and under the action of the permanent magnet magnetic field, the direction of the magnetic force on the push ring assembly is towards the output tooth, and the active engagement tooth and the output tooth remain engaged.
[0016] The technical advantages of this utility model are as follows: The electromagnetic clutch structure provided by this utility model includes an input shaft, a push ring unit, an active engagement tooth, and an output tooth. The push ring unit is set on the input shaft, the active engagement tooth is set on the input shaft, and the output tooth is set on the input shaft. The push ring unit can realize power transmission or interruption through electromagnetic force without the need for energization. This makes the electromagnetic clutch structure provided by this utility model have the advantages of fast response, low energy consumption, and low heat generation.
[0017] Therefore, the electromagnetic clutch structure provided by this utility model realizes power transmission or interruption through electromagnetic force, without the need for energization, and has the advantages of fast response, low energy consumption and low heat generation. Attached Figure Description
[0018] This manual includes the following figures, which illustrate the following:
[0019] Figure 1 This is a schematic diagram of the electromagnetic clutch structure in an embodiment of this utility model;
[0020] Figure 2 This is a schematic diagram of the structure of the electromagnetic coil in an embodiment of this utility model;
[0021] Figure 3 This is a schematic diagram of the push ring assembly in an embodiment of this utility model;
[0022] Figure 4 This is a schematic diagram of the active engagement tooth in an embodiment of this utility model;
[0023] Figure 5 This is a schematic diagram of the output tooth structure in an embodiment of this utility model.
[0024] The components in the diagram are labeled as follows: Input shaft-10, push ring unit-20, electromagnetic coil-21, copper wire winding-211, housing-212, winding groove-213, push ring assembly-22, inner push ring-221, first outer push ring-222, second outer push ring-223, permanent magnet-224, active engagement tooth-30, inner spline-31, outer spline-32, output tooth-40, connecting spline-41. Detailed Implementation
[0025] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention, and to facilitate its implementation.
[0026] Figure 1 This is a schematic diagram of the electromagnetic clutch structure in an embodiment of this utility model.
[0027] like Figure 1As shown, the electromagnetic clutch structure provided by this utility model includes an input shaft 10, a push ring unit 20, an active engagement tooth 30, and an output tooth 40. The push ring unit 20 is disposed on the input shaft 10, the active engagement tooth 30 is disposed on the input shaft 10, and the output tooth 40 is disposed on the input shaft 10. The push ring unit 20 can realize power transmission or interruption through electromagnetic force without the need for energization to maintain it, so that the electromagnetic clutch structure provided by this utility model has the advantages of fast response, low energy consumption, and low heat generation.
[0028] Figure 2 This is a schematic diagram of the structure of the electromagnetic coil in an embodiment of this utility model; Figure 3 This is a schematic diagram of the push ring assembly in an embodiment of this utility model.
[0029] like Figure 2 and Figure 3 As shown, the push ring unit 20 includes an electromagnetic coil 21 and a push ring assembly 22. The push ring assembly 22 is movably sleeved on the input shaft 10. The electromagnetic coil 21 is disposed on the outside of the push ring assembly 22. The push ring assembly 22 includes an inner push ring 221, a first outer push ring 222, a second outer push ring 223, and a permanent magnet 224. The inner push ring 221, the first outer push ring 222, and the second outer push ring 223 are connected by an interference fit. The permanent magnet 224 is connected to the inner push ring 221 by a clearance fit. The electromagnetic coil 21 includes a copper wire winding 211 and a housing 212. The housing 212 is provided with a winding groove 213. The copper wire winding 211 is disposed in the winding groove 213. The housing 212 is sleeved on the outside of the push ring assembly 22.
[0030] Figure 4 This is a schematic diagram of the active engagement tooth in an embodiment of this utility model.
[0031] like Figure 4 As shown, the active engagement tooth 30 is located on one side of the push ring assembly 22. The active engagement tooth 30 is provided with an internal spline 31, which is arranged along the axial direction perpendicular to the input shaft 10. The input shaft 10 is provided with a sliding groove that matches the internal spline 31. The sliding groove is arranged along the axial direction of the input shaft 10, so that the active engagement tooth 30 can slide along the axial direction of the input shaft 10.
[0032] Figure 5 This is a schematic diagram of the output tooth structure in an embodiment of this utility model.
[0033] like Figure 4 and Figure 5 As shown, the active engagement tooth 30 is provided with an external spline 32, which is arranged along the axial direction of the input shaft 10. The output tooth 40 is provided with a connecting spline 41 that is adapted to the external spline 32. The external spline 32 and the connecting spline 41 mesh to realize power transmission; the external spline 32 and the connecting spline 41 disengage to realize power interruption.
[0034] When the electromagnetic coil 21 is not energized, under the magnetic field of the permanent magnet 224, the magnetic force on the push ring assembly 22 moves away from the output tooth 40, and the active engagement tooth 30 remains disengaged from the output tooth 40. When the electromagnetic coil 21 is energized with a positive current, under the combined magnetic field of the permanent magnet 224 and the electromagnetic coil 21, the magnetic force on the push ring assembly 22 moves towards the output tooth 40. The push ring assembly 22 drives the active engagement tooth 30 to move closer to the output tooth 40, and the active engagement tooth 30 engages with the output tooth 40, realizing power output. After engagement, the current in the electromagnetic coil 21 is removed. At this time, under the magnetic field of the permanent magnet 224, the direction of the magnetic force on the push ring assembly 22 is towards the output tooth 40, and the active engagement tooth 30 remains engaged with the output tooth 40. The electromagnetic coil 21 is supplied with a reverse current. Under the combined magnetic field of the permanent magnet 224 and the electromagnetic coil 21, the direction of the magnetic force on the push ring assembly 22 is away from the output tooth 40. The push ring assembly 22 drives the active engagement tooth 30 to move away from the output tooth 40, and the active engagement tooth 30 disengages from the output tooth 40, thus interrupting the power supply.
[0035] Therefore, the electromagnetic clutch structure provided by this utility model controls the movement of the push ring assembly 22 through electromagnetic force, thereby realizing the engagement and disengagement between the active engagement tooth 30 and the output tooth 40, and the transmission and interruption of power. It has the characteristics of fast response. In both the engagement and disengagement states, the electromagnetic coil assembly does not need to be energized to maintain the engagement, and has the characteristics of low energy consumption and low heat generation. Compared with magnetic clutches on the market, the electromagnetic clutch structure provided by this utility model eliminates the return spring structure, has the characteristics of small space, and is more compact and reliable.
[0036] In the operation of the electromagnetic clutch structure provided by this utility model, when the car starts, the drive motor drives the gear to transmit power, and the output tooth 40 transmits the power to the wheel. During this process, the electromagnetic clutch module is in a disengaged state. Under the action of the magnetic circuit of the permanent magnet 224, the push ring assembly 22 is subjected to a downward magnetic force, ensuring that the active engagement tooth 30 is in a disengaged state.
[0037] When the vehicle speed reaches a certain value, the engine needs to participate in power output. The vehicle issues an electromagnetic clutch engagement command and adjusts the speed difference between the output gear 40 and the active engagement gear 30, keeping it between 20 and 50 rpm. At this time, a constant current of 4A is applied to the electromagnetic coil 21. Under the combined action of the magnetic fields of the permanent magnet 224 and the electromagnetic coil 21, the push ring assembly 22 is subjected to an upward axial attraction and moves axially along the input shaft 10. Since the active engagement gear 30 and the push ring assembly 22 are connected by an interference fit or equivalent, the active engagement gear 30 slides axially on the input shaft 1 through a spline fit. When the travel of the active engagement gear 30 reaches a certain value, the external spline 32 on the active engagement gear 30 engages with the connecting spline 41 on the output gear 40, at which point the engine can output power. The power transmission path is: engine → input shaft 10 → active engagement gear 30 → output gear 40.
[0038] Once the active engagement tooth 30 and the output tooth 40 are fully engaged based on the speed difference, the energizing action of the electromagnetic coil 21 is canceled. At this time, under the action of the magnetic circuit of the permanent magnet 224, the push ring assembly 22 is subjected to an upward magnetic force, ensuring that the active engagement tooth 30 is in the engagement state.
[0039] When the vehicle speed decreases to a certain value, the motor needs to output power independently. The vehicle sends a disengagement command to the electromagnetic clutch, and a reverse current is applied to the electromagnetic coil 21. At this time, under the combined action of the magnetic fields of the permanent magnet 224 and the electromagnetic coil 21, the push ring assembly 22 is subjected to a downward axial attraction and moves axially in the input shaft 10. Since the active engagement tooth 30 and the push ring assembly 22 are connected by an interference fit or equivalent, the active engagement tooth 30 slides axially downward in the input shaft 10 through a spline fit, thereby disengaging from the output tooth 40 and interrupting the engine power output.
[0040] The role and effect of the embodiments
[0041] The electromagnetic clutch structure provided by this utility model includes an input shaft 10, a push ring unit 20, an active engagement tooth 30, and an output tooth 40. The push ring unit 20 is disposed on the input shaft 10, the active engagement tooth 30 is disposed on the input shaft 10, and the output tooth 40 is disposed on the input shaft 10. The push ring unit 20 can realize power transmission or interruption through electromagnetic force without the need for energization to maintain it, so that the electromagnetic clutch structure provided by this utility model has the advantages of fast response, low energy consumption, and low heat generation.
[0042] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.
Claims
1. An electromagnetic clutch structure, characterized in that, The device includes an input shaft (10), a push ring unit (20), an active engagement tooth (30), and an output tooth (40). The push ring unit (20) is disposed on the input shaft (10), the active engagement tooth (30) is disposed on the input shaft (10), and the output tooth (40) is disposed on the input shaft (10). The push ring unit (20) includes an electromagnetic coil (21) and a push ring assembly (22). The push ring assembly (22) is movably sleeved on the input shaft (10), and the electromagnetic coil (21) is disposed on the outside of the push ring assembly (22). The push ring assembly (22) includes an inner push ring (221). The first outer push ring (222), the second outer push ring (223), and the permanent magnet (224) are connected by an interference fit, and the permanent magnet (224) is connected to the inner push ring (221) by a clearance fit. The electromagnetic coil (21) includes a copper wire winding (211) and a housing (212). The housing (212) is provided with a winding groove (213). The copper wire winding (211) is disposed in the winding groove (213). The housing (212) is sleeved on the outside of the push ring assembly (22).
2. The electromagnetic clutch structure according to claim 1, characterized in that, The active engagement tooth (30) is provided with an internal spline (31), which is arranged along the axial direction perpendicular to the input shaft (10). The input shaft (10) is provided with a groove that is adapted to the internal spline (31).
3. The electromagnetic clutch structure according to claim 2, characterized in that, The active engagement tooth (30) is provided with an external spline (32), which is arranged axially along the input shaft (10). The output tooth (40) is provided with a connecting spline (41) that is adapted to the external spline (32). The external spline (32) and the connecting spline (41) mesh.
4. The electromagnetic clutch structure according to claim 3, characterized in that, When the electromagnetic coil (21) is not energized, under the magnetic field of the permanent magnet (224), the direction of the magnetic force on the push ring assembly (22) is away from the output tooth (40), and the active engagement tooth (30) and the output tooth (40) remain disengaged.
5. The electromagnetic clutch structure according to claim 4, characterized in that, The electromagnetic coil (21) carries a positive current. Under the combined magnetic field of the permanent magnet (224) and the electromagnetic coil (21), the direction of the magnetic force on the push ring assembly (22) is toward the output tooth (40). The push ring assembly (22) drives the active engagement tooth (30) to move toward the output tooth (40). The active engagement tooth (30) meshes with the output tooth (40) to achieve power output.
6. The electromagnetic clutch structure according to claim 5, characterized in that, The electromagnetic coil (21) carries a reverse current. Under the combined magnetic field of the permanent magnet (224) and the electromagnetic coil (21), the direction of the magnetic force on the push ring assembly (22) moves away from the output tooth (40). The push ring assembly (22) drives the active engagement tooth (30) to move away from the output tooth (40). The active engagement tooth (30) disengages from the output tooth (40), thus interrupting the power supply.
7. The electromagnetic clutch structure according to claim 6, characterized in that, After the electromagnetic clutch is engaged, the electromagnetic coil (21) is de-energized. Under the action of the magnetic field of the permanent magnet (224), the direction of the magnetic force on the push ring assembly (22) is toward the output tooth (40), and the active engagement tooth (30) and the output tooth (40) remain engaged.