CN219413323U

CN219413323U - Wet clutch for pure electric multi-gear gearbox

Info

Publication number: CN219413323U
Application number: CN202320348339.5U
Authority: CN
Inventors: 李军均; 刘婧文
Original assignee: Bog Warner Transmission System Jiangsu Co ltd
Current assignee: Bog Warner Transmission System Jiangsu Co ltd
Priority date: 2023-03-01
Filing date: 2023-03-01
Publication date: 2023-07-25
Anticipated expiration: 2033-03-01

Abstract

The utility model relates to the technical field of clutches, and discloses a wet clutch for a pure electric multi-gear gearbox, which comprises an outer shell, wherein an input gear for transmitting motor torque is movably connected to the inner side of the outer shell, an inner shell for connecting and matching with the input gear is fixedly connected to the outer part of the input gear, and a partition plate is movably connected to the inner part of the outer shell. Through input gear, interior casing transmission moment of torsion, a plurality of division boards, friction disc and backplate cooperation realize the transmission of different moment of torsion simultaneously, improve the transmission of the big moment of torsion of different gears and high rotational speed of electric drive clutch, this electric drive clutch is inside to adopt simple mechanical parts such as input gear, division board, friction disc, backplate, effect pressure disk, piston housing, balanced piston, cooperation piston, not only reduces the construction space of electric drive clutch, has reduced the complexity of electric drive clutch simultaneously, has improved the practicality and the stability of electric drive clutch.

Description

Wet clutch for pure electric multi-gear gearbox

Technical Field

The utility model relates to the technical field of clutches, in particular to a wet clutch for a pure electric multi-gear gearbox.

Background

The traditional electric drive system is a single-gear reduction gearbox, has higher requirements on motor performance such as rotating speed and torque, and often needs a battery with larger capacity for long endurance mileage, and has over-high system rotating speed to influence the NVH performance of the whole vehicle. It is therefore urgent to develop a two-or multi-speed electrically driven transmission in which the core element is a clutch, and the design requirements of the electrically driven transmission on the clutch are extremely high, not only requiring the transmission of extremely large torque and rotational speed, but also requiring compact space, the transmission of rotational speed of the electrically driven clutch is relatively high, more than ten thousand revolutions per minute, the axial length and radial dimension are both limited to a small space, and the clutch is required to respond quickly, and the interruption and combination of torque are rapidly achieved in the millisecond level, so that the current field of electrically driven multi-speed transmissions does not satisfy these severe mass-produced clutch products.

Disclosure of Invention

In order to solve the problem that the reliable clutch product does not exist in the field of the electrically driven gearbox, development of a corresponding clutch product is needed, extremely high torque can be transmitted, extremely high rotating speed is met, space is compact, response is rapid, torque interruption and combination can be rapidly achieved at a millisecond level, and therefore the whole vehicle efficiency and battery endurance mileage are improved.

The utility model is realized by the following technical scheme: the utility model provides a wet clutch for pure electric multi-gear gearbox, includes the shell body, the inboard swing joint of shell body has the input gear who is used for transmitting motor torque, the outside fixedly connected with of input gear is used for connecting the interior casing of cooperation input gear, the inside swing joint of shell body has the division board, the inside swing joint of shell body has the friction disc, the inside swing joint of shell body has the Kong Kahuang that is used for backplate, the outside fixedly connected with of backplate is used for axial fixity division board, friction disc, backplate. The inside swing joint of shell body has the effect pressure disk that is used for controlling the division board action, the inside swing joint of shell body has the piston housing that is used for the inside balanced chamber that produces of shell body, the inside swing joint of piston housing has the balanced piston that is used for matching the piston housing to form balanced chamber, the fixed internal connection of shell body has output wheel hub, output wheel hub's inside swing joint has the gearbox axle, the outside swing joint of effect pressure disk has the spring plate, the inside swing joint of effect pressure disk has the cooperation piston, output wheel hub's outside swing joint has the effect piston that is used for the inside and cooperation piston cooperation of shell body to form the pressure chamber of shell body, the outside swing joint of piston housing has the axle jump ring, output wheel hub's inboard swing joint has the sealing washer.

Further, the inner shell is movably connected with the friction plate through a spline, the friction plate is coaxial with the partition plate, the friction plate is coaxial with the back plate, and the partition plate, the back plate and the friction plate are arranged in a staggered mode at intervals.

Furthermore, a pressure cavity is formed among the acting pressure plate, the matched piston and the acting piston, and the piston shell is movably connected with the output hub through a shaft clamp spring.

Further, the spring disc is movably connected with the acting piston, and the spring disc is movably connected with the inner wall of the piston shell.

Further, a balance cavity is formed among the acting pressure plate, the piston shell, the balance piston and the matched piston.

Further, the output hub is movably connected with the gearbox shaft through a spline, and the acting piston is fixedly connected with the output hub.

Furthermore, sealing rings are adopted for sealing the contact part of the output hub and the gearbox shaft, the number of the sealing rings is two, and the sealing rings are O-shaped.

The utility model provides a wet clutch for a pure electric multi-gear gearbox. The beneficial effects are as follows:

the transmission of different torques is realized through the cooperation of the input gear and the inner shell, meanwhile, the transmission of different torques is realized through the cooperation of the plurality of partition plates, the friction plates and the back plate, the transmission of different gears of the electric drive clutch and high rotating speed is improved, the partition plates and the friction plates are designed to be normally open, the operation efficiency of the gearbox is improved, meanwhile, the sectional area of a balance cavity formed among the acting pressure plate, the piston shell, the balance piston and the matched piston is approximately equal to the sectional area of a pressure cavity formed among the acting pressure plate, the balance piston, the matched piston and the acting piston, so that the clutch is more stable at different rotating speeds, hydraulic transmission kinetic energy can be saved, meanwhile, oil liquid is adopted in the clutch to dissipate heat, the reliability and stability of the electric drive clutch are improved, and simple mechanical components such as the input gear, the partition plates, the friction plates, the back plate, the acting pressure plate, the piston shell, the balance piston and the matched piston are adopted in the electric drive clutch, the structural space of the electric drive clutch is reduced, and the complexity of the electric drive clutch is simultaneously, and the practicability and stability of the electric drive clutch are improved.

Drawings

FIG. 1 is a schematic diagram of the internal side view structure of the present utility model;

FIG. 2 is an enlarged schematic view of the structure A in FIG. 1 according to the present utility model;

FIG. 3 is an enlarged schematic view of the structure of FIG. 1B according to the present utility model;

fig. 4 is an enlarged schematic view of the structure at C in fig. 1 according to the present utility model.

In the figure: 1. an outer housing; 11. an input gear; 12. an inner housing; 13. a partition plate; 14. a friction plate; 15. a back plate; 16. kong Kahuang; 2. an action pressure plate; 21. a piston housing; 22. a balance piston; 23. an output hub; 24. a gearbox shaft; 25. a spring plate; 26. a matched piston; 27. an action piston; 28. shaft clamp springs; 29. and (3) sealing rings.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The wet clutch for the pure multi-speed transmission is exemplified as follows:

examples

Referring to fig. 1-2, a wet clutch for a pure electric multi-gear gearbox includes an outer housing 1, an input gear 11 for transmitting motor torque is movably connected to the inner side of the outer housing 1, an inner housing 12 for connecting the input gear 11 is fixedly connected to the outer side of the input gear 11, a partition plate 13 is movably connected to the inner side of the outer housing 1, a friction plate 14 is movably connected to the inner side of the outer housing 1, the inner housing 12 and the friction plate 14 are movably connected through a spline, the friction plate 14 is coaxial with the partition plate 13, the friction plate 14 is coaxial with a back plate 15, and the partition plate 13, the back plate 15 and the friction plate 14 are alternately arranged at intervals.

The inside swing joint of shell body 1 is used for backplate 15, and the outside fixedly connected with of backplate 15 is used for axial fixation division board 13, friction disc 14, backplate 15's hole jump ring 16.

The external motor drives the control input gear 11 to rotate, the input gear 11 rotates to drive the inner shell 12 to rotate, the inner shell 12 rotates to enable the friction plate 14 to rotate, the separation plate 13 is pushed by the acting pressure plate 2 to slide on the inner side of the outer shell 1 and contact with the friction plate 14, the separation plate 13 is pushed to slide to enable the friction plate 14 to contact with the backboard 15, the friction plate 14 contacts with the separation plate 13 to drive the separation plate 13 to rotate, and the torque and rotation speed adjustment of different gears are achieved through the combination of the number of different friction plates 14 and the number of the separation plates 13.

Through input gear 11, inner shell 12 transmission moment of torsion, a plurality of division boards 13, friction disc 14 and backplate 15 cooperation realize the transmission of different moment of torsion simultaneously, improve the transmission of the big moment of torsion of different gears and high rotational speed of electrically driven clutch, division board 13 and friction disc 14 are normally open the design, increase gearbox operating efficiency.

Examples

Referring to fig. 1-4, a wet clutch for a full-electric multi-speed transmission includes an outer housing 1,

the inside swing joint of shell body 1 has the action pressure disk 2 that is used for controlling division board 13 action, forms the pressure chamber between action pressure disk 2, cooperation piston 26, the action piston 27, and piston casing 21 passes through axle jump ring 28 and output wheel hub 23 swing joint.

The inside swing joint of shell body 1 has the piston casing 21 that is used for the inside balanced chamber that produces of shell body 1, and the inside swing joint of piston casing 21 has the balanced piston 22 that is used for matcing piston casing 21 and forms balanced chamber, and the inside of shell body 1 is connected with output hub 23, and output hub 23's inside swing joint has gearbox axle 24, and the outside swing joint of effect pressure disk 2 has spring plate 25, spring plate 25 and effect pressure disk 2 swing joint, spring plate 25 and the inner wall swing joint of piston casing 21.

Based on the first embodiment, when the clutch actuation hydraulic oil flows into the pressure chamber formed among the actuation pressure plate 2, the matching piston 26 and the actuation piston 27 through the oil holes, the pressure increase in the pressure chamber pushes the actuation pressure plate 2 to move right, the actuation pressure plate 2 moves right to drive the spring plate 25 to shrink, the actuation pressure plate 2 moves right to drive the balance piston 22 to move right to squeeze the piston housing 21, the actuation pressure plate 2 moves right until contacting with the partition plate 13, the partition plate 13 is pushed by the actuation pressure plate 2 to move right in the outer housing 1 until contacting with the friction plate 14, and at this time, the partition plate 13 and the friction plate 14 are synchronous in rotation speed, namely, the clutch is combined. The input gear 11 drives the inner shell 12 to rotate, the separation plate 13 and the friction plate 14 drive the outer shell 1 and the output hub 23 to rotate, and the output hub 23 rotates to drive the gearbox 24 to output torque and rotation speed. In the same way, when the pressure in the pressure chamber formed among the pressure plate 2, the matching piston 26 and the acting piston 27 is reduced, the spring disc 25 pushes the acting pressure plate 2 to move left under the action of the elastic force until being separated from the partition plate 13.

The inside swing joint of action pressure disk 2 has cooperation piston 26, the outside swing joint of output wheel hub 23 has the action piston 27 that is used for the inside and cooperation piston 26 cooperation of shell body 1 to form the pressure chamber, the outside swing joint of piston housing 21 has axle jump ring 28, the inboard swing joint of output wheel hub 23 has sealing washer 29, form the balanced chamber between action pressure disk 2, piston housing 21, balance piston 22, cooperation piston 26, output wheel hub 23 and gearbox shaft 24 pass through spline swing joint, action piston 27 and output wheel hub 23 fixed connection, output wheel hub 23 and gearbox shaft 24 contact site seal adoption sealing washer 29, the quantity of sealing washer 29 is two, sealing washer 29 adopts the O type circle model.

Meanwhile, the sectional area of a balance cavity formed between the acting pressure plate, the piston shell, the balance piston and the matched piston is approximately equal to the sectional area of a pressure cavity formed between the acting pressure plate, the balance piston, the matched piston and the acting piston, so that the clutch is more stable at different rotating speeds, hydraulic transmission kinetic energy can be saved, meanwhile, oil liquid is adopted for heat dissipation in the clutch, the reliability and stability of the electric drive clutch are improved, and simple mechanical components such as an input gear, a partition plate, a friction plate, a back plate, the acting pressure plate, the piston shell, the balance piston and the matched piston are adopted in the electric drive clutch, so that the structural space of the electric drive clutch is reduced, the complexity of the electric drive clutch is reduced, and the practicability and stability of the electric drive clutch are improved.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents. As used herein, the terms "comprises," "comprising," or the like, are intended to cover a component or an article appearing before the term, but not to exclude other components or articles from the list of components or articles from which they are listed, and the terms "connected" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect, "upper," "lower," "left," "right," etc. are merely intended to indicate relative positional relationships, which may change accordingly when the absolute position of the object being described changes, and technical or scientific terms used herein should be construed as having ordinary meanings as understood by those of ordinary skill in the art to which the utility model pertains.

Claims

1. The utility model provides a pure electric multi-gear wet clutch for gearbox, includes shell body (1), its characterized in that: the motor torque transmission device is characterized in that an input gear (11) for transmitting the motor torque is movably connected to the inner side of the outer shell (1), an inner shell (12) for connecting the matched input gear (11) is fixedly connected to the outer side of the input gear (11), a separation plate (13) is movably connected to the inner side of the outer shell (1), a friction plate (14) is movably connected to the inner side of the outer shell (1), a back plate (15) is movably connected to the inner side of the outer shell (1), and Kong Kahuang (16) for axially fixing the separation plate (13), the friction plate (14) and the back plate (15) are fixedly connected to the outer side of the back plate (15);

the inside swing joint of shell body (1) has action pressure disk (2) that are used for controlling division board (13) action, the inside swing joint of shell body (1) has piston casing (21) that are used for the inside balanced chamber that produces of shell body (1), the inside swing joint of piston casing (21) has balance piston (22) that are used for matching piston casing (21) formation balanced chamber, the inside fixedly connected with output hub (23) of shell body (1), the inside swing joint of output hub (23) has gearbox axle (24), the outside swing joint of action pressure disk (2) has spring plate (25), the inside swing joint of action pressure disk (2) has cooperation piston (26), the outside swing joint of output hub (23) has action piston (27) that are used for forming the pressure chamber with cooperation piston (26), the outside swing joint of piston casing (21) has axle jump ring (28), the inboard swing joint of output hub (23) has sealing washer (29).

2. A wet clutch for a pure multi-speed transmission according to claim 1, wherein: the inner shell (12) is movably connected with the friction plate (14) through a spline, the friction plate (14) is coaxial with the partition plate (13), the friction plate (14) is coaxial with the back plate (15), and the partition plate (13), the back plate (15) and the friction plate (14) are arranged in a staggered mode at intervals.

3. A wet clutch for a pure multi-speed transmission according to claim 1, wherein: the pressure chamber is formed among the acting pressure plate (2), the matched piston (26) and the acting piston (27), and the piston shell (21) is movably connected with the output hub (23) through a shaft clamp spring (28).

4. A wet clutch for a pure multi-speed transmission according to claim 1, wherein: the spring disc (25) is movably connected with the acting pressure disc (2), and the spring disc (25) is movably connected with the inner wall of the piston shell (21).

5. A wet clutch for a pure multi-speed transmission according to claim 1, wherein: and a balance cavity is formed among the acting pressure plate (2), the piston shell (21), the balance piston (22) and the matched piston (26).

6. A wet clutch for a pure multi-speed transmission according to claim 1, wherein: the output hub (23) is movably connected with the gearbox shaft (24) through a spline, and the acting piston (27) is fixedly connected with the output hub (23).

7. A wet clutch for a pure multi-speed transmission according to claim 1, wherein: the sealing ring (29) is adopted for sealing the contact part of the output hub (23) and the gearbox shaft (24), the number of the sealing rings (29) is two, and the sealing rings (29) are O-shaped.