Electromagnetic wheel end disengaging mechanism

Abstract

The invention discloses an electromagnetic wheel end disengaging mechanism which comprises a front cover assembly, an occlusion disc assembly, a mounting disc assembly, a converter assembly, a stator assembly and a shell assembly. Through the novel bistable electromagnetic actuating mechanism scheme, the state is kept without electrification, the electromagnetic driving power and the overall power consumption are reduced, the unique power transmission mode is achieved, tooth beating and friction loss do not exist, the product structure is more compact, small-size and large-torque power transmission is achieved, and the service life is prolonged. According to the structural scheme, the overall cost is reduced, and the power loss is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic wheel end disengagement mechanism design, and in particular to an electromagnetic wheel end disengagement mechanism. Background Art

[0002] With the rapid development of my country's automobile industry, wheel-end disengagement mechanisms have been widely used. As the space inside the vehicle becomes more and more compact, the volume and power consumption of on-board equipment are required to be smaller and smaller, and the reliability and utilization of workpieces are required to be higher and higher. In order to meet the vehicle's requirements for weight and economy, how to reduce the volume of the wheel-end disengagement mechanism and reduce power consumption while ensuring performance is a difficult problem that our industry needs to overcome.

[0003] The existing clutches are divided into friction type and tooth type, and usually include electromagnetic coils and springs. When the electromagnetic coil is energized, the clutch enters the engaged state, at which time the engine torque can be output through the clutch; when the electromagnetic coil is de-energized, the spring causes the clutch to enter the disengaged state, also known as the separation state, at which time the torque transmission in the clutch is interrupted. However, in the existing clutch, if the electromagnetic coil suddenly loses power due to a sudden reason such as a fault, the spring will drive the clutch to disengage quickly, resulting in a sudden interruption of the torque transmission in the clutch, which will in turn cause the car to suddenly lose torque. This phenomenon is very dangerous during the driving of the car and is prone to safety accidents. In addition, this clutch is not only large in size, but also inconvenient to arrange and install the entire vehicle. There are also friction losses and tooth knocking. In addition, the stator coil must be continuously powered when the clutch is in the engaged state, and the power loss is also very large. Summary of the invention

[0004] The purpose of the present invention is to provide an electromagnetic wheel end disengagement mechanism, which can achieve power transmission with small volume and large torque through a unique power transmission method. There is no tooth playing and friction loss through mechanical locking, and a novel bistable electromagnetic actuator scheme can achieve a combined holding state without power supply, thereby improving product reliability and reducing power loss.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electromagnetic wheel end disengagement mechanism, comprising a front cover assembly, an engaging disk assembly, a mounting disk assembly, a converter assembly, a stator assembly, and a housing assembly; the front cover assembly is provided with bearings and oil seals; the output end of the engaging disk assembly is mounted on the front cover assembly; the input end of the mounting disk assembly is mounted on the housing assembly; the converter assembly is mounted on the mounting disk assembly; the stator assembly is mounted on the housing assembly; the housing assembly is provided with bearings and oil seals.

[0006] Furthermore, the bite disk assembly is provided with a pillar engagement groove, an output shaft, and a bearing seat hole, the pillar engagement groove is evenly distributed on the end face of the bite disk in the circumferential direction, and the output shaft is provided with an external spline.

[0007] Furthermore, the mounting plate assembly includes a mounting plate, a pillar reset spring, a pillar, a mounting screw, and a covering plate. The covering plate is provided with a square hole, which can axially constrain the pillar without restricting the rotation of the pillar. The pillar reset spring can realize automatic reset of the pillar.

[0008] Furthermore, the mounting plate is provided with support grooves, internal splines of the input shaft, and external splines. The support grooves are mirror-image structures in pairs and are evenly distributed circumferentially on the end surface of the mounting plate for mounting support return springs and supports.

[0009] Furthermore, the pillar is a rectangular parallelepiped structure with guide shafts arranged on both sides. The pillar is a bidirectionally evenly distributed structure. The pillar can rotate around the guide shaft, and the bidirectional evenly distributed structure can achieve bidirectional locking.

[0010] Furthermore, each of the pillar grooves is equipped with a pillar reset spring and a pillar, the pillars are installed in a bidirectional evenly distributed structure, and the cover plate is fixed to the mounting plate by screws to achieve axial constraint on the pillars and the pillar reset springs.

[0011] Furthermore, the converter assembly includes a mounting seat, a top column spring, a first armature, a second armature, a permanent magnet, and a retaining spring. The permanent magnet is installed between the first armature and the second armature and fixed to the mounting seat with a retaining spring. The top column spring not only serves as an ejection support, but also reduces the impact force generated by the axial movement of the converter.

[0012] Furthermore, the mounting seat is provided with a retaining ring groove and an internal spline, and the internal spline cooperates with the external spline of the mounting plate to guide the axial movement of the converter.

[0013] Furthermore, the permanent magnets are axially magnetized and circumferentially arranged.

[0014] Furthermore, the stator assembly includes a first iron core, a second iron core, a third iron core, a first coil, a second coil, an insulating shell, and a connection terminal.

[0015] Furthermore, the first coil and the second coil are in a series structure, the first coil is arranged between the first iron core and the second iron core, the second coil is arranged between the second iron core and the third iron core, and the insulating shell is located between each coil and the iron core to achieve insulation between the coil and the iron core.

[0016] Furthermore, the insulating shell and the wiring terminal are an integral injection-molded structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0019] Figure 1 A schematic diagram of an electromagnetic wheel end disengagement mechanism assembly provided in Example 1 of the present invention;

[0020] Figure 2 A schematic diagram of an engaging disc assembly of an electromagnetic wheel end disengaging mechanism provided in Example 1 of the present invention;

[0021] Figure 3 A schematic diagram of a mounting plate assembly of an electromagnetic wheel end disengagement mechanism provided in Example 1 of the present invention;

[0022] Figure 4 A schematic diagram of a converter assembly of an electromagnetic wheel end disengagement mechanism provided in Example 1 of the present invention;

[0023] Figure 5 A schematic diagram of a stator assembly of an electromagnetic wheel end disengagement mechanism provided in Example 1 of the present invention;

[0024] Figure 6 A schematic diagram of a support for an electromagnetic wheel end disengagement mechanism provided in Example 1 of the present invention;

[0025] Figure 1In: 1-front cover assembly; 2-engaging plate assembly; 201-pillar engagement groove; 202-output shaft; 203-bearing seat hole; 3-mounting plate assembly; 310-mounting plate; 311-pillar groove; 312-inner spline of input shaft; 313-external spline; 301-pillar return spring; 302-pillar; 303-mounting screw; 304 cover plate; 4-converter assembly; 410-mounting seat; 411-circlip groove; 412-inner spline; 401-top column spring; 402-first armature; 403-permanent magnet; 404-circlip; 405-second armature; 5-stator assembly; 501-first core; 502-second core; 503-third core; 504-first coil; 505-second coil; 506-insulating shell; 507-terminal; 6-housing assembly. DETAILED DESCRIPTION

[0026] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The existing clutches are divided into friction type and tooth type, and usually include electromagnetic coils and springs. When the electromagnetic coil is energized, the clutch enters the engaged state, at which time the engine torque can be output through the clutch; when the electromagnetic coil is de-energized, the spring causes the clutch to enter the disengaged state, also known as the separation state, at which time the torque transmission in the clutch is interrupted. However, in the existing clutch, if the electromagnetic coil suddenly loses power due to a sudden reason such as a fault, the spring will drive the clutch to disengage quickly, resulting in a sudden interruption of the torque transmission in the clutch, which will in turn cause the car to suddenly lose torque. This phenomenon is very dangerous during the driving of the car and is prone to safety accidents. In addition, this clutch is not only large in size, but also inconvenient to arrange and install the entire vehicle. There are also friction losses and tooth knocking. In addition, the stator coil must be continuously powered when the clutch is in the engaged state, and the power loss is also very large.

[0028] like Figure 1 As shown, this embodiment proposes an electromagnetic wheel end disengagement mechanism, including a front cover assembly 1, an engaging disk assembly 2, a mounting disk assembly 3, a converter assembly 4, a stator assembly 5, and a housing assembly 6; the front cover assembly 1 is provided with a bearing and an oil seal; the output end of the engaging disk assembly 2 is mounted on the front cover assembly 1; the input end of the mounting disk assembly 3 is mounted on the housing assembly 6, and the converter assembly 4 is mounted on the mounting disk assembly 3; the stator assembly 5 is mounted on the housing assembly 6; the housing assembly 6 is provided with a bearing and an oil seal.

[0029] Specifically, the housing assembly 6 and the front cover assembly 1 are the bearing devices of each assembly component. The engaging disk assembly 2 and the mounting disk assembly 3 are respectively installed on the front cover assembly 1 and the housing assembly 6, and are supported and fixed by bearings. Oil seals are provided on the outer sides of the bearings for sealing; a bearing seat hole 203 is provided on the engaging disk assembly 2, and the engaging disk and the mounting disk are supported and axially constrained by bearings. In the disengaged state, the engaging disk and the mounting disk cannot transmit torque; the converter assembly 4 is installed on the mounting disk assembly 3, and the axial movement of the converter is realized by cooperating with the internal spline 412 and the external spline 313; the stator assembly 5 is installed and fixed on the housing assembly 6.

[0030] The engaging disc assembly 2 serves as the driven end of the disengaging mechanism, and realizes power transmission through the support engagement groove 201 and the cooperation with the support 302, and an output shaft 202 is provided at the output end.

[0031] The mounting plate assembly 3 includes a mounting plate 310 , a support return spring 301 , a support 302 , a mounting screw 303 , and a cover plate 304 .

[0032] Each of the pillar grooves 311 is equipped with a pillar return spring 301 and a pillar 302. The pillar 302 is installed in a bidirectional uniform structure. The covering plate 304 is provided with a directional hole and is fixed to the mounting plate 310 by screws 303 to axially constrain the pillar 302 but does not limit the rotation of the pillar 302.

[0033] The mounting plate assembly 3 serves as the active end of the disengagement mechanism. Through the axial movement of the converter assembly 4, the push column spring 401 pushes out the pillar 302, and the pillar 302 rotates around the guide shaft in the pillar groove 311 and engages with the pillar engagement groove 201 of the engaging plate assembly 2 to transmit power.

[0034] The converter assembly 4 includes a mounting seat 410, a top column spring 401, a first armature 402, a permanent magnet 403, a retaining spring 404, and a second armature 405. The permanent magnet 403 is installed between the first armature 402 and the second armature 405, and is fixed to the mounting seat 410 by the retaining spring 404. The top column spring 401 is installed on the mounting seat 410.

[0035] The converter assembly 4 serves as an actuator of the disengagement mechanism. When the converter assembly 4 is located on the right side, the top column spring 401 is not in contact with the pillar 302, and the pillar 302 is in a reset state under the action of the pillar reset spring 301, and the mounting disk assembly 3 and the bite disk assembly 2 are in a disengaged state; when the converter assembly 4 moves axially to the left, the top column spring 401 contacts the pillar 302, and the pillar 302 rotates and is pushed out to engage with the pillar engagement groove 201 on the bite disk assembly 2, and the mounting disk assembly 3 and the bite disk assembly 2 are in an engaged state.

[0036] The stator assembly 5 includes a first coil 504 and a second coil 505. The first coil 504 is arranged between the first core 501 and the second core 502. The second coil 505 is arranged between the second core 502 and the third core 503. The insulating shell 506 is located between each coil and the core to insulate the coil and the core.

[0037] The first coil 504 and the second coil 505 are in series structure, and the double-coil series structure and the converter permanent magnet 403 realize a bistable electromagnetic actuator.

[0038] The stator assembly 5 is an electromagnetic drive device. When the first coil 504 and the second coil 505 are powered off, the magnetic force provided by the permanent magnet 403 and the first iron core 501 and the second iron core 502 generate a magnetic field to lock the converter assembly 4. When the first coil 504 and the second coil 505 are powered on, the converter assembly 4 is affected by the magnetic field force generated by the stator assembly 5 and moves axially to the left. The support 302 is pushed out by the top support spring 401 to complete the process from disengagement to engagement. After the engagement is completed, the first coil 504 and the second When the coil 505 is powered off, the magnetic force provided by the permanent magnet 403 and the magnetic field generated by the second iron core 502 and the third iron core 503 will lock the converter assembly 4; when disengagement is required, a reverse current needs to be provided to the first coil 504 and the second coil 505. Under the action of the reverse magnetic field force, the converter assembly 4 moves from left to right. At this time, the support 302 is reset under the action of the support reset spring 301, completing the process from engagement to disengagement. After the disengagement is completed, the first coil 504 and the second coil 505 can be powered off.

[0039] The bistable electromagnetic actuator is capable of de-energizing the first coil 504 and the second coil 505 after the mechanism is engaged or disengaged. The converter assembly 4 is locked under the action of the magnetic force provided by the permanent magnet 403 and the magnetic field generated by the first iron core 501, the second iron core 502, and the third iron core 503, maintaining the engaged or disengaged state.

[0040] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. An electromagnetic wheel end disengagement mechanism, characterized in that: The invention comprises a front cover assembly (1), a bite plate assembly (2), a mounting plate assembly (3), a converter assembly (4), a stator assembly (5), and a housing assembly (6); the front cover assembly (1) is provided with a bearing and an oil seal; the output end of the bite plate assembly (2) is mounted on the front cover assembly (1); the input end of the mounting plate assembly (3) is mounted on the housing assembly (6); the converter assembly (4) is mounted on the mounting plate assembly (3); the stator assembly (5) is mounted on the housing assembly (6); the housing assembly (6) is provided with a bearing and an oil seal.

2. The electromagnetic wheel end disengagement mechanism according to claim 1, characterized in that: The bite disk assembly (2) is provided with a pillar engagement groove (201), an output shaft (202), and a bearing seat hole (203); the pillar engagement groove (201) is evenly distributed on the end surface of the bite disk in the circumferential direction; and the output shaft (202) is provided with an external spline.

3. The electromagnetic wheel end disengagement mechanism according to claim 1, characterized in that: The mounting plate assembly (3) comprises a mounting plate (310), a support post return spring (301), a support post (302), a mounting screw (303), and a cover plate (304).

4. The electromagnetic wheel end disengagement mechanism according to claim 3, characterized in that: The mounting plate (310) is provided with support grooves (311), internal splines (312) of the input shaft, and external splines (313); the support grooves (311) are mirror-image structures in pairs and are evenly distributed on the end surface of the mounting plate in the circumferential direction.

5. The electromagnetic wheel end disengagement mechanism according to claim 3, characterized in that: The support (302) is a rectangular parallelepiped structure with guide shafts arranged on both sides.

6. The electromagnetic wheel end disengagement mechanism according to claim 3, characterized in that: Each support groove (311) is provided with a support return spring (301) and a support (302). The support (302) is installed in a bidirectional evenly distributed structure. The cover plate (304) is provided with a square hole and is fixed to the installation plate (310) by screws (303).

7. The electromagnetic wheel end disengagement mechanism according to claim 1, characterized in that: The converter assembly (4) comprises a mounting seat (410), a top column spring (401), a first armature (402), a permanent magnet (403), a retaining spring (404), and a second armature (405).

8. The electromagnetic wheel end disengagement mechanism according to claim 7, characterized in that: The mounting seat (410) is provided with a retaining ring groove (411) and an internal spline (412).

9. The electromagnetic wheel end disengagement mechanism according to claim 7, characterized in that: The permanent magnet (403) is axially magnetized, circumferentially arranged between the first armature (402) and the second armature (405), and mounted on a mounting seat (410).

10. The electromagnetic wheel end disengagement mechanism according to claim 1, characterized in that: The stator assembly (5) comprises a first iron core (501), a second iron core (502), a third iron core (503), a first coil (504), a second coil (505), an insulating shell (506), and a connection terminal (507).

11. The electromagnetic wheel end disengagement mechanism according to claim 10, characterized in that: The first coil (504) and the second coil (505) are in a series structure, the first coil (504) is arranged between the first iron core (501) and the second iron core (502), the second coil (505) is arranged between the second iron core (502) and the third iron core (503), and the insulating shell (506) is located between each coil and the iron core.

12. The electromagnetic wheel end disengagement mechanism according to claim 10, characterized in that: The insulating shell (506) and the connecting terminal (507) are an integral injection-molded structure.

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