Transition force transmission electromagnetic clutch structure
By using a clearance fit between the push ring assembly and the shaft, and a transition smooth rod connection, the problems of wear between the push ring assembly and the driving disc, as well as insufficient space on the driven disc, in the electromagnetic clutch are solved, thus achieving smooth operation of the electromagnetic clutch.
Patent Information
- Application Number
- CN202520905701.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-09
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-05-09
AI Technical Summary
In existing electromagnetic clutch structures, the push ring assembly directly contacts the driving plate, leading to wear, and there is insufficient space on the driven plate.
The push ring assembly with clearance fit is designed to slide with the shaft. The driving disc and driven disc are connected by a transition rod and pin to avoid direct contact. The driven disc is allowed to rotate freely using a needle roller bearing. The engagement and disengagement of the clutch are controlled by an electromagnetic coil.
It effectively avoids abnormal wear between the push ring and the driving plate, solves the problem of insufficient space in the driven plate, and achieves smooth operation of the clutch.
Smart Images
Figure CN223964790U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of automobile design and manufacturing, and more specifically, to an electromagnetic clutch structure for transitional force transmission. Background Technology
[0002] In a current electromagnetic clutch structure, the driving disc engages with a shaft via splines / petals, and the push ring assembly directly contacts the driving disc to achieve synchronous rotation. However, the close fit between the push ring assembly and the driving disc results in significant wear on the contact surface. Furthermore, the driven disc, positioned between the driving disc and the push ring assembly, leads to insufficient installation space. Utility Model Content
[0003] In order to solve the above-mentioned technical problems in the prior art, the purpose of this utility model is to provide an electromagnetic clutch structure for transitional force transmission.
[0004] This utility model discloses an electromagnetic clutch structure for transitional force transmission, comprising a shaft with a central hole, an electromagnetic coil mounted on the shaft, a transition guide rod disposed within the central hole of the shaft, the transition guide rod being slidable relative to the wall of the central hole; a push ring assembly disposed inside the electromagnetic coil, the push ring assembly being in clearance fit with the outer circumference of the shaft and being slidable on the outer circumference of the shaft; a first pin disposed on the push ring assembly, the first pin being in clearance fit with the transition guide rod; a driven disc and a driven disc are also disposed on the outer circumference of the shaft, the driven disc being rotatable freely relative to the outer circumference of the shaft, a spring being disposed between the driven disc and the driven disc, and a second pin disposed on the driven disc, the second pin being in clearance fit with the transition guide rod.
[0005] The passive disk is fitted with a clearance fit to the outer periphery of the shaft.
[0006] A needle roller bearing is provided between the passive disk and the outer periphery of the shaft.
[0007] The electromagnetic coil is fixedly fitted to the housing of the electromagnetic clutch.
[0008] The shaft is an axisymmetric structure.
[0009] The transition light rod is fitted with the hole wall of the central hole with a clearance.
[0010] The first pin is interference-fitted with the push ring assembly.
[0011] The first pin is arranged perpendicular to the axial direction of the shaft.
[0012] The second pin is interference-fitted with the active plate.
[0013] The second pin is arranged perpendicular to the axial direction of the shaft.
[0014] Compared with the prior art, the electromagnetic clutch structure for transitional force transmission of this utility model has the following beneficial effects:
[0015] The electromagnetic clutch structure for transitional force transmission of this invention can avoid abnormal wear caused by direct contact between the push ring and the driving disc, and solve the problem of insufficient space for the passive disc to be set between the driving disc and the push ring assembly. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the electromagnetic clutch structure for transitional force transmission in Example 1. Detailed Implementation
[0017] The electromagnetic clutch structure for transitional force transmission of this utility model will be further described below with reference to specific embodiments, so as to help those skilled in the art to have a more complete, accurate and in-depth understanding of the technical solution of this utility model.
[0018] Example 1
[0019] like Figure 1As shown, the electromagnetic clutch structure for transitional force transmission in this embodiment includes a shaft 9, which is an axisymmetric structure. An electromagnetic coil 1 is mounted on the shaft 9 and is fixedly fitted to the housing of the electromagnetic clutch. A transition guide rod 3 is provided in the central hole of the shaft 9, and the transition guide rod 3 is clearance-fitted with the wall of the central hole, allowing the transition guide rod 3 to slide relative to the wall of the central hole. A push ring assembly 2 is provided inside the electromagnetic coil 1, with a gap between the push ring assembly 2 and the outer wall of the shaft 9, allowing the push ring assembly 2 to slide on the shaft 9 while maintaining a clearance fit. A first pin 4 is provided on the push ring assembly 2, with an interference fit between the first pin 4 and the push ring assembly 2, and a clearance fit between the first pin 4 and the transition guide rod 3. The first pin 4 is perpendicular to the axial direction of the shaft 9. A passive disk 5 and an active disk 7 are arranged on the outer periphery of the shaft 9. The passive disk 5 is clearance-fitted with the shaft 9, or a needle roller bearing is provided between the passive disk 5 and the shaft 9, allowing the passive disk 5 to rotate freely. A spring 6 is provided between the passive disk 5 and the active disk 7. The active disk 7 is provided with a second pin 8, which is interference-fitted with the active disk 7 and clearance-fitted with the transition rod 3. The second pin 8 is perpendicular to the axial direction of the shaft 9. When the electromagnetic coil 1 is not energized, the shaft 9 drives the active disk 7 to rotate through the second pin 8 and the transition rod 3. At this time, the passive disk 5 and the active disk 7 are not in contact, and the passive disk 5 and the active disk 7 will not rotate at the same speed or transmit torque synchronously, allowing them to rotate independently. When the electromagnetic coil 1 is energized, DC power flows through the electromagnetic coil 1, forming a stable magnetic field. Under the action of electromagnetic force, the transmission path is: push ring assembly 2 → first pin 4 → transition rod 3 → second pin 8 → active disk 7. At this time, the rotational speed and torque of shaft 9 are transmitted to driven plate 5 via driving plate 7, so that the rotational speed and torque of shaft 9 and driven plate 5 are consistent, realizing the engagement function of the clutch. When electromagnetic coil 1 is de-energized, the magnetic field disappears due to the disconnection of the DC current, and the electromagnetic force on push ring assembly 2 also disappears. At this time, driving plate 7 does not receive the magnetic force of electromagnetic coil 1. Under the action of spring 6, driving plate 7 is subjected to a thrust away from driven plate 5, causing driving plate 7 and driven plate 5 to disengage. At this time, shaft 9 and driven plate 5 can rotate independently, realizing the disengagement function of the clutch.
[0020] The assembly sequence of the electromagnetic structure in this embodiment is as follows: electromagnetic coil 1 (mounted on the housing) → shaft 9 → push ring assembly 2 → transition light rod 3 → first pin 4 → passive disk 5 → spring 6 → active disk 7 → second pin 8. The electromagnetic structure of this embodiment can avoid abnormal wear caused by direct contact between the push ring and the active disk, and solves the spatial arrangement problem of the passive disk between the active disk and the push ring assembly.
[0021] For those skilled in the art, the specific embodiments are merely exemplary descriptions of the present invention. 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 are within the protection scope of the present invention.
Claims
1. An electromagnetic clutch structure for transitional force transmission, characterized in that: The device includes a shaft with a central hole, an electromagnetic coil mounted on the shaft, and a transition rod disposed within the central hole, the transition rod being slidable relative to the wall of the central hole. A push ring assembly is disposed inside the electromagnetic coil, the push ring assembly having a clearance fit with the outer circumference of the shaft and being slidable on the outer circumference of the shaft. A first pin is disposed on the push ring assembly, the first pin having a clearance fit with the transition rod. A passive disk and a driving disk are also disposed on the outer circumference of the shaft, the passive disk being rotatable relative to the outer circumference of the shaft, a spring being disposed between the passive disk and the driving disk, and a second pin being disposed on the driving disk, the second pin having a clearance fit with the transition rod.
2. The electromagnetic clutch structure for transitional force transmission according to claim 1, characterized in that: The passive disk is fitted with a clearance fit on the outer periphery of the shaft.
3. The electromagnetic clutch structure for transitional force transmission according to claim 1, characterized in that: A needle roller bearing is provided between the passive disk and the outer periphery of the shaft.
4. The electromagnetic clutch structure for transitional force transmission according to claim 1, characterized in that: The electromagnetic coil is fixedly fitted to the housing of the electromagnetic clutch.
5. The electromagnetic clutch structure for transitional force transmission according to claim 1, characterized in that: The shaft has an axisymmetric structure.
6. The electromagnetic clutch structure for transitional force transmission according to claim 1, characterized in that: The transition light rod is fitted with the hole wall of the central hole with a clearance.
7. The electromagnetic clutch structure for transitional force transmission according to claim 1, characterized in that: The first pin is interference-fitted with the push ring assembly.
8. The electromagnetic clutch structure for transitional force transmission according to claim 1, characterized in that: The first pin is arranged perpendicular to the axial direction of the shaft.
9. The electromagnetic clutch structure for transitional force transmission according to claim 1, characterized in that: The second pin is interference-fitted with the active disc.
10. The electromagnetic clutch structure for transitional force transmission according to claim 1, characterized in that: The second pin is arranged perpendicular to the axial direction of the shaft.