Wet clutch and vehicle

Abstract

This invention relates to the technical field of vehicle transmissions, and discloses a wet clutch and a vehicle. The wet clutch includes a housing, steel plates, and an oil supply mechanism. The steel plates are fixed inside the housing, and are spaced apart from the inner wall of the housing. The edges of the steel plates have recesses that extend away from the housing. The oil supply mechanism is connected to the housing and drives cooling oil to flow through the gap between the steel plates and the housing. By driving the cooling oil to flow through the gap between the steel plates and the housing and increasing the flow rate of the cooling oil through the recesses, this invention solves the technical problem of affecting the heat exchange efficiency of the transmission in the prior art, and achieves the technical effect of higher heat exchange efficiency of the steel plates.

Description

Technical Field

[0001] This invention relates to the field of vehicle transmission technology, and in particular to a wet clutch and a vehicle. Background Technology

[0002] Wet clutches are widely used in AT (Auto Transmission) transmissions in motor vehicles. They transmit torque through friction between friction plates, and require cooling fluid to cool and lubricate the friction plates to ensure normal operation and service life of the clutch.

[0003] In existing wet clutches, lubricating oil is supplied to the clutch radially externally via a channel. When the clutch is disengaged, the lubricating oil flows out through the gap between the last outer steel plate and the support plate, with a wave spring arranged in the gap to keep the gap open. However, the wave spring reduces the cross-section of the lubricating oil discharge, causing lubricating oil to accumulate in the friction element area, occupying the flow path of the cooling fluid, thereby reducing the flow efficiency of the coolant and affecting the heat dissipation efficiency of the automatic transmission. Summary of the Invention

[0004] The purpose of this invention is to provide a wet clutch and vehicle that solves the technical problem affecting the heat exchange efficiency of the transmission in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention provides a wet clutch, including a housing, steel plates and an oil supply mechanism; The steel sheet is fixed inside the housing and is spaced apart from the inner wall of the housing. The edge of the steel sheet is provided with a recess, which extends in a direction away from the housing. The oil supply mechanism is connected to the housing and drives the cooling oil to flow through the gap between the steel sheet and the housing.

[0006] In an optional embodiment, the width of the recess decreases along the axial direction close to the steel sheet.

[0007] In an optional embodiment, the steel sheet is provided with a plurality of snap-fit ​​teeth, which are spaced apart along the circumference of the steel sheet. The housing is provided with a plurality of grooves, which are spaced apart along the inner wall of the housing. Each snap-fit ​​tooth extends into one of the grooves and snaps into place.

[0008] In an optional embodiment, each of the snap-fit ​​teeth is provided with a recess, and the recess is provided on the axis of symmetry of each of the snap-fit ​​teeth.

[0009] In an optional embodiment, a plurality of steel sheets are provided, the axes of the plurality of steel sheets are arranged to coincide, and each steel sheet is provided with a plurality of the recesses.

[0010] In an optional embodiment, the projections of multiple recesses on the multiple steel sheets along the axial direction of the steel sheets coincide.

[0011] In an optional embodiment, the oil supply mechanism includes a drive pump, which is fixedly connected to the housing. The output end of the drive pump is disposed opposite to the gap between the steel sheet and the housing. The drive pump is used to drive the cooling oil to flow through the gap between the steel sheet and the housing.

[0012] In an optional embodiment, the oil supply mechanism includes a rotating shaft and a fan blade. The rotating shaft passes through the axis of the steel sheet and is rotatably connected to the housing. The fan blade is fixedly connected to the rotating shaft. The rotating shaft drives the fan blade to rotate, and the fan blade drives the cooling oil to flow through the gap between the steel sheet and the housing.

[0013] In an optional embodiment, both the opening of the recess and the bottom are smoothly transitioned.

[0014] The present invention also provides a vehicle including the aforementioned wet clutch.

[0015] This invention provides a wet clutch, comprising a housing, steel plates, and an oil supply mechanism. The steel plates are fixed inside the housing, spaced apart from the inner wall of the housing. The edges of the steel plates have recesses extending away from the housing. The oil supply mechanism is connected to the housing and drives cooling oil to flow through the gap between the steel plates and the housing. By driving the cooling oil through the gap between the steel plates and the housing and increasing the flow rate of the cooling oil through the recesses, this invention solves the technical problem affecting the heat exchange efficiency of the transmission in the prior art, achieving a higher heat exchange efficiency for the steel plates. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the wet transmission mentioned in the embodiments of the present invention; Figure 2 This is a partial structural cross-sectional schematic diagram of the wet transmission mentioned in an embodiment of the present invention; Figure 3 This is a schematic diagram of the steel sheet mentioned in the embodiments of the present invention.

[0017] In the diagram, 1-shell; 2-steel sheet; 3-recess; 4-clamping teeth; 5-gap; 6-groove. Detailed Implementation

[0018] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the invention.

[0019] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] In related technologies, wet clutches supply lubricating oil to the clutch from the radial outside via a channel. When the clutch is disengaged, the lubricating oil flows out through the gap between the last outer steel plate and the support plate, with a wave spring arranged in the gap to keep the gap open. However, the wave spring reduces the cross-section of the lubricating oil discharge, causing lubricating oil to accumulate in the friction element area, occupying the flow path of the cooling fluid, thereby reducing the flow efficiency of the coolant and affecting the heat dissipation efficiency of the automatic transmission.

[0021] In view of this, such as Figures 1-3 As shown, some embodiments of the present invention provide a wet clutch, including a housing 1, a steel plate 2, and an oil supply mechanism; the steel plate 2 is fixed inside the housing 1, the steel plate 2 is spaced apart from the inner wall of the housing 1, the edge of the steel plate 2 is provided with a recess 3, the recess 3 extends in a direction away from the housing 1, the oil supply mechanism is connected to the housing 1, and the oil supply mechanism drives cooling oil to flow through the gap 5 between the steel plate 2 and the housing 1.

[0022] In the above embodiments, both the shell 1 and the steel sheet 2 can be made of metal. The steel sheet 2 can be annular and can be disposed inside the shell 1. The outer ring of the steel sheet 2 is spaced apart from the inner wall of the shell 1. At the same time, in each gap 5, a recess 3 is provided at the outer ring of the steel sheet 2. The recess 3 extends towards the axis of the steel sheet 2, thereby increasing the cross-sectional area of ​​each gap 5 and improving the flow efficiency of the cooling oil. The oil supply mechanism can drive the cooling oil to flow through the gap 5 between the steel sheet 2 and the shell 1, thereby improving the heat exchange efficiency.

[0023] Some embodiments of the present invention provide a wet clutch, including a housing 1, a steel plate 2, and an oil supply mechanism; the steel plate 2 is fixed inside the housing 1, and the steel plate 2 is spaced apart from the inner wall of the housing 1. The edge of the steel plate 2 is provided with a recess 3, which extends in a direction away from the housing 1. The oil supply mechanism is connected to the housing 1, and the oil supply mechanism drives the cooling oil to flow through the gap 5 between the steel plate 2 and the housing 1. By driving the cooling oil to flow through the gap 5 between the steel plate 2 and the housing 1 through the oil supply mechanism, and by increasing the flow rate of the cooling oil through the recess 3, the technical problem of affecting the heat exchange efficiency of the transmission in the prior art is solved, and the technical effect of higher heat exchange efficiency of the steel plate 2 is achieved.

[0024] In an optional embodiment, the width of the recess 3 is set to decrease along the axial direction close to the steel sheet 2.

[0025] In the above embodiment, the recess 3 is groove-shaped, and the width of the recess 3 is gradually changed. The width of the recess 3 decreases along the direction close to the axis of the steel sheet 2, so that the flow of cooling oil is smoother.

[0026] In an optional embodiment, the steel sheet 2 is provided with a plurality of snap-fit ​​teeth 4, which are spaced apart along the circumference of the steel sheet 2. The housing 1 is provided with a plurality of grooves 6, which are spaced apart along the inner wall of the housing 1. Each snap-fit ​​tooth 4 extends into a groove 6 and snaps into the steel sheet 2.

[0027] In the above embodiment, the snap-fit ​​teeth 4 can be tooth-shaped, and multiple grooves 6 can be provided in the housing 1. The snap-fit ​​teeth 4 can extend into the grooves 6 to snap into the housing. The outer wall of the snap-fit ​​teeth 4 is spaced apart from the inner wall of the grooves 6, so that the inner wall of the housing 1 can abut against the outer ring of the steel sheet 2, thereby sealing the gap 5 and preventing the coolant from escaping.

[0028] In an optional embodiment, each snap-fit ​​tooth 4 is provided with a recess 3, and the recess 3 is provided on the axis of symmetry of each snap-fit ​​tooth 4.

[0029] In the above embodiment, the number of snap-fit ​​teeth 4, the number of grooves 6, and the number of recesses 3 are the same. Each snap-fit ​​tooth 4 extends into a groove 6, and each recess 3 can be set at the axial position of the snap-fit ​​tooth 4. Each recess 3 can extend towards the axial direction of the steel sheet 2, so that each gap 5 can be circulated with cooling oil, thereby improving the heat exchange efficiency of the steel sheet 2.

[0030] In an optional embodiment, multiple steel sheets 2 are provided, with the axes of the multiple steel sheets 2 coinciding, and each steel sheet 2 is provided with multiple recesses 3.

[0031] In the above embodiment, six steel plates 2 can be provided, and the axes of the six steel plates 2 can be arranged to coincide. Each steel plate 2 can be provided with thirty-two snap-fit ​​teeth 4. The thirty-two snap-fit ​​teeth 4 can be symmetrically arranged on the outer ring of the steel plate 2. The axis of symmetry of each snap-fit ​​tooth 4 points to the center of the steel plate 2. Each snap-fit ​​tooth 4 is provided with a recess 3, so as to form multiple gaps 5 with the shell 1.

[0032] In an optional embodiment, the projections of the plurality of recesses 3 on the plurality of steel sheets 2 along the axial direction of the steel sheet 2 coincide.

[0033] In the above embodiment, the multiple steel sheets 2 have the same structure and shape, the multiple steel sheets 2 have the same size, and each steel sheet 2 is provided with thirty-two snap-fit ​​teeth 4. The multiple steel sheets 2 are projected onto a plane perpendicular to the axis of the steel sheet 2, so that the multiple steel sheets 2 overlap, and the projections of the multiple snap-fit ​​teeth 4 and the multiple recesses 3 are all overlapped.

[0034] In an optional embodiment, the oil supply mechanism includes a drive pump, which is fixedly connected to the housing 1. The output end of the drive pump is disposed opposite to the gap 5 between the steel plate 2 and the housing 1. The drive pump is used to drive the cooling oil to flow through the gap 5 between the steel plate 2 and the housing 1.

[0035] In the above embodiments, the driving pump can be an oil pump, which can be fixed on the housing 1. The output end of the driving pump can extend into the housing 1. The driving pump can drive the flow of cooling oil, improve the fluidity of the cooling oil, and thus improve the heat exchange efficiency of the cooling oil.

[0036] In an optional embodiment, the oil supply mechanism includes a rotating shaft and a fan blade. The rotating shaft passes through the axis of the steel sheet 2 and is rotatably connected to the housing 1. The fan blade is fixedly connected to the rotating shaft. The rotating shaft drives the fan blade to rotate, and the fan blade drives the cooling oil to flow through the gap 5 between the steel sheet 2 and the housing 1.

[0037] In the above embodiments, the shaft and fan blades can be made of metal. The axis of the shaft can be aligned with the axis of the steel sheet 2. The shaft can be mounted on multiple steel sheets 2, which can slide relative to the shaft. The shaft can be rotatably connected to the housing 1 via a bearing. The shaft can drive the fan blades to rotate, thereby driving the cooling oil to move, improving the fluidity of the cooling oil, and thus improving the heat exchange efficiency of the steel sheet 2.

[0038] Optionally, the oil supply mechanism may include a rotating shaft, which agitates the cooling oil by rotating the shaft, thereby increasing the heat exchange efficiency of the cooling oil.

[0039] In an optional embodiment, the opening and bottom of the recess 3 are rounded.

[0040] In the above embodiments, the opening of the recess 3 and the bottom of the recess 3 can both be set to be arc-shaped, so that the entire recess 3 can be arc-shaped, thereby making the flow path of the cooling oil smoother, avoiding the recess 3 from affecting the flow of the cooling oil, and improving the heat exchange efficiency.

[0041] Some embodiments of the present invention also provide a vehicle including a wet clutch.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wet clutch, characterized in that, Includes the casing, steel plates, and oil supply mechanism; The steel sheet is fixed inside the housing and is spaced apart from the inner wall of the housing. The edge of the steel sheet is provided with a recess, which extends in a direction away from the housing. The oil supply mechanism is connected to the housing and drives the cooling oil to flow through the gap between the steel sheet and the housing.

2. The wet clutch according to claim 1, characterized in that, The width of the recess decreases along the axis closest to the steel sheet.

3. The wet clutch according to claim 1, characterized in that, The steel sheet is provided with a plurality of locking teeth, which are spaced apart along the circumference of the steel sheet. The housing is provided with a plurality of grooves, which are spaced apart along the inner wall of the housing. Each locking tooth extends into one of the grooves and engages.

4. The wet clutch according to claim 3, characterized in that, Each of the snap-fit ​​teeth is provided with a recess, and the recess is provided on the axis of symmetry of each of the snap-fit ​​teeth.

5. The wet clutch according to claim 1, characterized in that, The steel sheet is provided in multiple ways, and the axes of the multiple steel sheets are arranged to coincide. Each steel sheet is provided with multiple recesses.

6. The wet clutch according to claim 5, characterized in that, The projections of the plurality of recesses on the plurality of steel sheets along the axial direction of the steel sheets coincide.

7. The wet clutch according to claim 1, characterized in that, The oil supply mechanism includes a drive pump, which is fixedly connected to the housing. The output end of the drive pump is positioned opposite to the gap between the steel sheet and the housing. The drive pump is used to drive the cooling oil to flow through the gap between the steel sheet and the housing.

8. The wet clutch according to claim 1, characterized in that, The oil supply mechanism includes a rotating shaft and a fan blade. The rotating shaft passes through the axis of the steel sheet and is rotatably connected to the housing. The fan blade is fixedly connected to the rotating shaft. The rotating shaft drives the fan blade to rotate, and the fan blade drives the cooling oil to flow through the gap between the steel sheet and the housing.

9. The wet clutch according to claim 1, characterized in that, The opening of the recess and the bottom are both smoothly transitioned.

10. A vehicle, characterized in that, Includes a wet clutch as described in any one of claims 1-9.

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