阅读说明：本技术 用于自动变速器的多片式离合器 (Multi-plate clutch for automatic transmission ) 是由 王猛 黄德志 冷易凌 李臣南 于 2021-10-19 设计创作，主要内容包括：本发明公开了一种用于自动变速器的多片式离合器,包括离合器外壳、离合器毂、驱动压盘、设置于离合器毂上的摩擦片和隔片以及用于产生控制所述摩擦片和隔片进行接触的电磁力的电磁传动装置。本发明用于自动变速器的多片式离合器,采用电磁力推动摩擦片实现离合器的动力传递,动力传递无迟滞,响应更快,且无污染。(The invention discloses a multiplate clutch for an automatic transmission, which comprises a clutch shell, a clutch hub, a driving pressure plate, a friction plate and a separating plate which are arranged on the clutch hub, and an electromagnetic transmission device for generating electromagnetic force for controlling the friction plate and the separating plate to contact. The multi-plate clutch for the automatic transmission adopts electromagnetic force to push the friction plate to realize the power transmission of the clutch, and has no delay in power transmission, faster response and no pollution.)

1. A multiplate clutch for an automatic transmission, including a clutch housing, a clutch hub, a drive pressure plate, and a friction plate and a spacer provided on the clutch hub, characterized in that: the electromagnetic driving device is used for generating electromagnetic force for controlling the driving pressing disc to linearly move along the axial direction.

2. The multiplate clutch for an automatic transmission according to claim 1, characterized in that: the electromagnetic transmission device comprises a motion pressure magnetic ring, a motion rod arranged on the clutch hub and a coil spring arranged on the motion rod, the drive pressure plate is sleeved on the motion rod and is positioned between the motion pressure magnetic ring and the clutch hub, and the motion pressure magnetic ring is arranged on the motion rod.

3. The multiplate clutch for an automatic transmission according to claim 2, characterized in that: the moving rods are arranged in a plurality, all the moving rods are distributed along the circumferential direction, and the moving pressure magnetic ring and the coil spring are arranged on each moving rod.

4. The multiplate clutch for an automatic transmission according to claim 2, characterized in that: the driving pressure plate is provided with a driving piece mounting seat hole and a driving support hole, the coil spring is mounted on one side of the driving piece mounting seat hole, the driving piece mounting seat hole is located on the inner side of the driving support hole, the movement pressure magnetic ring is located on the outer side of the driving support hole, and the movement rod penetrates through the driving piece mounting seat hole and the driving support hole.

5. The multiplate clutch for an automatic transmission according to claim 3, characterized in that: the motion rods are provided with six motion rods.

6. The multiplate clutch for an automatic transmission according to any one of claims 2 to 4, characterized in that: the motion pressure magnetic ring is arranged on the motion rod through a limiting screw.

7. The multiplate clutch for an automatic transmission according to any one of claims 1 to 5, characterized in that: the clutch hub is provided with a driven disc hub, and one side of the driven disc hub is provided with an adjusting ring.

8. The multiplate clutch for an automatic transmission according to any one of claims 1 to 5, characterized in that: one side of the clutch shell is provided with a transmission gear, and the transmission gear is arranged on the first transmission shaft through a first bearing.

9. The multiplate clutch for an automatic transmission according to any one of claims 1 to 5, characterized in that: the drive pressure plate is mounted on a second transmission shaft through a second bearing, and the second transmission shaft penetrates through the clutch hub.

10. The multiplate clutch for an automatic transmission according to any one of claims 1 to 5, characterized in that: a torque support piece and a support ribbed plate are arranged in the clutch hub, a support pin and a damping device are arranged on the torque support piece, the support ribbed plate is connected with the clutch hub, and the support ribbed plate and the damping device are arranged in a plurality and are distributed along the circumferential direction.

Technical Field

The invention belongs to the technical field of clutches, and particularly relates to a multi-plate clutch for an automatic transmission.

Background

With the increasing holding capacity of automobiles, and because the automatic transmission of automobiles can bring improvements in the aspects of automobile maneuverability, driving comfort and the like, improve energy-saving effect and improve emission, the market share in developed countries and regions of the automobile industry is higher and higher.

At present, the multi-plate clutch adopted by the automatic transmission mostly applies positive pressure to clutch friction plates by utilizing the pressure during hydraulic transmission, so that the effective connection between the clutch friction plates is ensured, but the hydraulic transmission has certain hysteresis effect, the pressure is not favorably controlled accurately, and meanwhile, hydraulic oil has certain pollution characteristic.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. The invention provides a multi-plate clutch for an automatic transmission, aiming at improving the response speed without delaying power transmission.

In order to achieve the purpose, the invention adopts the technical scheme that: a multiplate clutch for an automatic transmission includes a clutch housing, a clutch hub, a driving pressure plate, friction plates and spacers provided on the clutch hub, and an electromagnetic transmission for generating electromagnetic force for controlling the driving pressure plate to linearly move in an axial direction.

The electromagnetic transmission device comprises a motion pressure magnetic ring, a motion rod arranged on the clutch hub and a coil spring arranged on the motion rod, the drive pressure plate is sleeved on the motion rod and is positioned between the motion pressure magnetic ring and the clutch hub, and the motion pressure magnetic ring is arranged on the motion rod.

The moving rods are arranged in a plurality, all the moving rods are distributed along the circumferential direction, and the moving pressure magnetic ring and the coil spring are arranged on each moving rod.

The driving pressure plate is provided with a driving piece mounting seat hole and a driving support hole, the coil spring is mounted on one side of the driving piece mounting seat hole, the driving piece mounting seat hole is located on the inner side of the driving support hole, the movement pressure magnetic ring is located on the outer side of the driving support hole, and the movement rod penetrates through the driving piece mounting seat hole and the driving support hole.

The motion rods are provided with six motion rods.

The motion pressure magnetic ring is arranged on the motion rod through a limiting screw.

The clutch hub is provided with a driven disc hub, and one side of the driven disc hub is provided with an adjusting ring.

One side of the clutch shell is provided with a transmission gear, and the transmission gear is arranged on the first transmission shaft through a first bearing.

The drive pressure plate is mounted on a second transmission shaft through a second bearing, and the second transmission shaft penetrates through the clutch hub.

A torque support piece and a support ribbed plate are arranged in the clutch hub, a support pin and a damping device are arranged on the torque support piece, the support ribbed plate is connected with the clutch hub, and the support ribbed plate and the damping device are arranged in a plurality and are distributed along the circumferential direction.

The multi-plate clutch for the automatic transmission adopts electromagnetic force to push the friction plate to realize the power transmission of the clutch, and has no delay in power transmission, faster response and no pollution.

Drawings

The description includes the following figures, the contents shown are respectively:

FIG. 1 is an overall structural view of a multiple disc clutch for an automatic transmission of the present invention;

FIG. 2 is an exploded assembly view of the multi-plate clutch for the automatic transmission of the present invention;

FIG. 3 is a design view of an electromagnetic drive mechanism;

FIG. 4 is a schematic view of a clutch internal partial structure;

labeled as: 1. a moving pressure magnetic ring; 2. a drive platen; 3. a clutch housing; 4. a transmission gear; 5. a spacer; 6. a friction plate; 7. a limit screw; 8. a drive shaft mount hole; 9. installing wire holes; 10. a clutch hub; 11. a first bearing; 12. a retainer ring; 13. a driving member mounting seat hole; 14. a second bearing; 15. a second drive shaft; 16. an adjustment ring; 17. a coil spring; 18. a driven disc hub; 19. a drive support hole; 20. a motion bar; 21. a support pin; 22. a torque support; 23. a damping device; 24. a support rib plate; 25. a first transmission shaft.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for a purpose of helping those skilled in the art to more fully, accurately and deeply understand the concept and technical solution of the present invention and to facilitate its implementation.

It should be noted that, in the following embodiments, the "first" and "second" do not represent an absolute distinction relationship in structure and/or function, nor represent a sequential execution order, but merely for convenience of description.

As shown in fig. 1 to 4, the present invention provides a multiplate clutch for an automatic transmission, including a clutch housing 3, a clutch hub 10, a driving pressure plate 2, friction plates 6 and spacers provided on the clutch hub 10, and an electromagnetic transmission for generating electromagnetic force for controlling the driving pressure plate 2 to linearly move in an axial direction.

Specifically, the characteristic that the positive pressure required when the multi-plate clutch is combined is small is utilized, and the electromagnetic transmission device is arranged, so that the engaging speed and the disengaging speed of the clutch are quicker, the power middle section time is reduced, and the gear shifting smoothness is improved. Meanwhile, the clutch cancels hydraulic transmission medium, completely adopts electromagnetic motion between the electromagnetic coil and the electromagnet, greatly reduces pollution of the hydraulic medium, can realize tight connection between the clutch friction plates 6 by electrifying forward current for the electromagnetic coil, realizes the power transmission function, can realize separation between the clutch friction plates 6 only by connecting reverse current or cutting off the power when terminal power transmission is needed, and greatly improves the power transmission efficiency.

As shown in fig. 1 to 4, the electromagnetic transmission device includes a moving pressure magnetic ring 1, a moving rod 20 disposed on a clutch hub 10, and a coil spring 17 disposed on the moving rod 20, wherein a driving pressure plate 2 is sleeved on the moving rod 20, the driving pressure plate 2 is disposed between the moving pressure magnetic ring 1 and the clutch hub 10, the moving pressure magnetic ring 1 is disposed on the moving rod 20, and the moving rod 20 is used for guiding the driving pressure plate 2 to move linearly in an axial direction. The driving pressure plate 2 linearly moves in the axial direction, and the friction plate 6 and the separator are pressed together, so that the friction plate 6 and the separator are in contact. The coil spring 17 and the moving pressure magnetic ring 1 generate magnetic force after being electrified, and the friction plate 6 is pushed under the action of the magnetic force between the electromagnetic coil and the electromagnet. The clutch has certain advantages in two states of clutch connection and disconnection, can obviously shorten the time of clutch connection and disconnection, and effectively improves the smoothness and the pause feeling of gear shifting.

As shown in fig. 1 to 4, a plurality of moving rods 20 are provided, all the moving rods 20 are distributed along the circumferential direction, and each moving rod 20 is provided with a moving pressure magnetic ring 1 and a coil spring 17. The length direction of the moving rod 20 is parallel to the axial line of the clutch hub 10, one end of the moving rod 20 in the length direction is fixedly connected with one end face of the clutch hub 10, all the moving rods 20 are uniformly distributed along the circumferential direction by taking the axial line of the clutch hub 10 as a central line, and the moving rod 20 is provided with mounting line holes 9.

As shown in fig. 1 to 4, the driving pressure plate 2 is provided with a driving member mounting hole 13 and a driving support hole 19, the coil spring 17 is mounted on one side of the driving member mounting hole 13, the driving member mounting hole 13 is located inside the driving support hole 19, and the moving rod 20 passes through the driving member mounting hole 13 and the driving support hole 19. The clutch hub 10, the friction plate 6 and the spacer are located in an inner cavity of the clutch housing 3, the driving pressure plate 2, the clutch hub 10 and the clutch housing 3 are coaxially arranged, the driving pressure plate 2 is located outside the clutch housing 3, the driving piece mounting seat holes 13 and the driving support holes 19 are round holes formed in the driving pressure plate 2, the number of the driving piece mounting seat holes 13 and the number of the driving support holes 19 are the same as that of the moving rods 20, each driving piece mounting seat hole 13 is coaxially arranged with one driving support hole 19, and the axes of the driving piece mounting seat holes 13 and the driving support holes 19 are parallel to the axis of the driving pressure plate 2. The surface of one side of the drive pressure plate 2 is provided with drive supporting holes 19, the inner side of each drive supporting hole 19 is provided with a driving piece mounting seat hole 13, the movement pressure magnetic ring 1 is positioned at the outer side of the drive supporting hole 19, the outer diameter of the movement pressure magnetic ring 1 is larger than that of the drive supporting hole 19, the movement pressure magnetic ring 1 is arranged on the movement rod 20 through a limiting screw 7, and the movement pressure magnetic ring 1 and the movement rod 20 are coaxially arranged.

As shown in fig. 1 to 4, in the present embodiment, the moving bar 20 is provided in total of six.

As shown in fig. 1 to 4, a plurality of friction plates 6 and separator plates are provided, the separator plates are iron plates, the separator plates and the friction plates 6 are alternately arranged on the outer edge of the clutch hub 10, the separator plates are provided between two adjacent friction plates 6, the separator plates and the friction plates 6 are coaxially provided with the clutch hub 10, and the separator plates and the friction plates 6 are located between the drive pressure plate 2 and the inner wall surface of the clutch housing 3. Set up the tooth's socket that lets the dogtooth embedding that sets up on the interior disc of spacer on the outer disc of clutch hub 10, set up the tooth's socket that lets the dogtooth embedding that sets up on the exterior disc of friction disc 6 on the interior disc of clutch housing 3, after friction disc 6 and spacer contact, produce the friction torque between spacer and the friction disc 6, spacer, friction disc 6 can synchronous revolution with drive pressure disk 2, clutch housing 3 and clutch hub 10.

As shown in fig. 1 to 4, a driven hub 18 is provided on the clutch hub 10, and an adjustment ring 16 is attached to one side of the driven hub 18. One side of the clutch housing 3 is provided with a transmission gear 4, the transmission gear 4 is positioned outside the clutch housing 3, and the transmission gear 4 is installed on a first transmission shaft 25 through a first bearing 11. The drive pressure plate 2 is mounted on a second drive shaft 15 via a second bearing 14, the second drive shaft 15 passing through the clutch hub 10. The first transmission shaft 25 and the second transmission shaft 15 are coaxially arranged with the clutch hub 10, and a transmission shaft mounting seat hole 8 is arranged at the center of the driving pressure plate 2.

As shown in fig. 4, a torque support member 22 and a support rib 24 are provided in the clutch hub 10, a support pin 21 and a damping device 23 are provided on the torque support member 22, the support rib 24 is connected to the clutch hub 10, and the support rib 24 and the damping device 23 are provided in plural and are distributed in the circumferential direction. The support ribs 24 are fixedly connected with the inner circumferential surface of the clutch hub 10, and all the support ribs 24 are uniformly distributed along the circumferential direction in the inner cavity of the clutch hub 10. The first transmission shaft 25 is fixedly connected with the torque support 22 at the center of the torque support 22, all the support pins 21 are circumferentially distributed on the outer side of the first transmission shaft 25, the length direction of the support pins 21 is parallel to the axis of the first transmission shaft 25, the support pins 21 and the first transmission shaft 25 protrude toward one side of the torque support 22, the second transmission shaft 15 protrudes toward the other side of the torque support 22, the clutch hub 10 is mounted on the second transmission shaft 15, and the clutch housing 3 is mounted on the first transmission shaft 25. The damping devices 23 are each mounted in correspondence with a support rib 24 in the clutch hub 10.

The operating principle of the multi-plate clutch for the automatic transmission of the above structure is as follows:

when a vehicle controller collects a vehicle gear shifting or power interruption signal, a secondary signal is processed to generate corresponding electromagnetic coil control current, the current is led into the coil spring 17 and the moving pressure magnetic ring 1, the coil spring 17 and the moving pressure magnetic ring 1 generate mutually attracted electromagnetic force, under the action of the electromagnetic force, the moving pressure magnetic ring 1 actuates the driving pressure plate 2 under the action of the electromagnetic force, the driving pressure plate 2 moves along the moving rod 20 to the directions of the friction plate 6 and the separating piece under the action of the electromagnetic force, the coil spring 17 is compressed at the same time, and the friction plate 6 and the separating piece generate friction torque under the action of the electromagnetic force to realize the power connection of the clutch. On the contrary, the coil spring 17 and the moving pressure magnetic ring 1 are electrified with opposite currents, and the interruption of power transmission can be realized.

The multi-plate clutch for the automatic transmission of the above structure has the following advantages:

1. the invention cancels a hydraulic power transmission device required by the clutch connection, adopts electromagnetic force to push the friction plate 6 to realize the power transmission of the clutch, has no delay in the power transmission, is correspondingly faster and has no pollution;

2. the application of the electromagnetic coil and the electromagnet can improve the engaging speed of power transmission, and can also lead reverse current to realize the quick interruption of the clutch and improve the gear shifting speed;

3. the design and application of the device greatly reduce the overall mass, are favorable for the requirement of light weight of the automobile and have a promoting effect on improving the fuel economy.

The invention is described above with reference to the accompanying drawings. It is to be understood that the specific implementations of the invention are not limited in this respect. Various insubstantial improvements are made by adopting the method conception and the technical scheme of the invention; the present invention is not limited to the above embodiments, and can be modified in various ways.