Clutch mounting assembly and vehicle

Abstract

This invention relates to a clutch mounting assembly and a vehicle. The clutch mounting assembly includes a clutch, which comprises: a clutch outer hub, the clutch outer hub being axially divided into a first axial portion and a second axial portion; a piston located axially in the first axial portion; a first friction plate group formed by a plurality of first friction plates located axially in the second axial portion and integrally rotatably connected to the clutch outer hub; a second friction plate group formed by a plurality of second friction plates located axially in the second axial portion and spaced apart from each other; and a clutch inner hub, the plurality of second friction plates integrally rotatably connected to the clutch inner hub. The clutch mounting assembly further includes a bearing, the clutch outer hub being supported on a fixed component via the bearing.

Description

Technical Field

[0001] This invention belongs to the field of vehicles, specifically relating to a clutch mounting assembly and a vehicle. Background Technology

[0002] A clutch is a commonly used power switching element in vehicles. By engaging and disengaging the clutch, the power transmission path between the two connected components is engaged or disengaged accordingly. Clutches include dry clutches and wet clutches. A wet clutch engages by hydraulic oil pressing multiple mating friction plates together. The input torque and speed are transmitted through the splines between the clutch hub and the steel plates and friction plates. Upon depressurization, the clutch disengages under the force of a spring, interrupting power transmission.

[0003] Clutches are primarily used in vehicle transmissions. Due to the need for lightweight vehicles, there are corresponding requirements for the weight of the transmission. Furthermore, a more compact transmission size is also required. As one of the main components of the transmission, the way the clutch is installed directly affects the size and structure of the transmission. Therefore, optimizing the installation of the clutch in the transmission has been a continuous goal in the field of vehicle technology.

[0004] Figure 1 This is a clutch arrangement scheme known to the applicant. In this scheme, the clutch mainly includes a clutch outer hub 16, a piston 17, an elastic element 18, an elastic element mounting seat 19, a plurality of first friction plates 21 and a plurality of second friction plates 22, and a clutch inner hub 33. The clutch outer hub 16 is supported on the housing 1 by a first bearing 601 and a second bearing 602, and is integrally rotatably connected to the shaft 2.

[0005] Figure 1 The proposed solution is complex in structure, large in size, and has low space utilization due to being supported by two bearings on the transmission housing or shaft. In addition, it also presents problems of difficult layout and high cost.

[0006] Figure 1 The proposed solution is a technology known to the applicant. Although it is described in the background section, this does not mean that the technology has become prior art, that is, it does not mean that the technology can be known by anyone other than the applicant. Summary of the Invention

[0007] In order to at least partially solve the above-mentioned technical problems, the present invention proposes the following technical solutions:

[0008] A clutch mounting assembly includes a clutch, said clutch comprising:

[0009] A clutch outer hub assembly, comprising a clutch outer hub, which is axially divided into a first axial portion and a second axial portion.

[0010] Piston, the piston being located axially in the first axial portion.

[0011] A first friction plate group, formed by multiple first friction plates, is located axially in the second axial portion, and the multiple first friction plates are integrally and rotatably connected to the outer hub of the clutch.

[0012] A second friction pad group, formed by multiple second friction pads, is located axially in the second axial portion, and the multiple first friction pads and the multiple second friction pads are spaced apart.

[0013] The clutch inner hub, wherein the plurality of second friction plates are integrally and rotatably connected to the clutch inner hub.

[0014] The clutch mounting assembly also includes a bearing, through which the clutch outer hub is supported on a fixed component.

[0015] The clutch mounting assembly according to the invention may further include the following individual features or combinations thereof:

[0016] The clutch outer hub also includes a clutch outer hub seat, which is fixedly connected to a shaft passing through the center of the clutch.

[0017] - It also includes a steel sleeve, with the bearing positioned axially close to the steel sleeve.

[0018] - The fixed component is a transmission housing, and the portion of the transmission housing that mates with the clutch outer hub is stepped, with the bearing disposed on one of the steps; and / or

[0019] Both the outer hub and the inner hub of the clutch have regularly arranged small oil drain holes.

[0020] - A first hole is provided on the outer hub of the clutch. An annular groove is provided on the side of the outer hub of the clutch that contacts the radially inner side of the piston. The annular groove contains a first sealing ring. An annular groove is provided on the radially outer side of the piston that contacts the outer hub of the clutch. The groove contains a second sealing ring.

[0021] - A second hole and a third hole are also provided on the outer hub of the clutch. The first hole, the second hole and the third hole are arranged in a regular repeating pattern on the outer hub, and the first hole, the second hole and the third hole are arranged sequentially in the axial direction.

[0022] The clutch further includes an elastic element and an elastic element mounting seat, on which a fourth hole is regularly arranged, and the second hole and the fourth hole constitute the balance oil passage of the piston.

[0023] - A thrust bearing is provided at a position adjacent to the connection between the outer hub of the clutch and the shaft.

[0024] - The second hole and the third hole form a lubrication passage for the bearing and the thrust bearing.

[0025] The present invention also relates to a vehicle including a transmission, the transmission including a housing and a shaft, and the vehicle further including a clutch mounting assembly according to the present invention.

[0026] Other advantages of the present invention will become more readily apparent after reading the detailed description of the technical solutions of the present invention in conjunction with the accompanying drawings. Attached Figure Description

[0027] Figure 1 A schematic diagram of a clutch mounting assembly known to the applicant is shown.

[0028] Figure 2 A schematic diagram of a clutch mounting assembly according to the present invention is shown.

[0029] Figure 3 A schematic diagram of the clutch outer hub and clutch inner hub of the clutch mounting assembly according to the present invention is shown. Detailed Implementation

[0030] It should be noted that although the invention is described in several embodiments in the accompanying drawings and in the following description, those skilled in the art will understand that, without conflict, the various embodiments and features in the embodiments of this application can be combined with each other.

[0031] Figure 2A schematic cross-sectional view of a clutch mounting assembly according to the present invention is shown. The clutch mounting assembly according to the present invention includes a clutch and a bearing 6. The clutch includes a clutch outer hub 16, which can be axially divided into a first axial portion and a second axial portion. An actuator end is provided in the first axial portion, including a piston chamber P1, a piston 17, an elastic element 18, and an elastic element mounting seat 19. The second axial portion includes a friction plate assembly composed of multiple first friction plates 21, 23, 25, 27, 29, 31 and multiple second friction plates 22, 24, 26, 28, 30, and a clutch inner hub 33. The multiple first friction plates 21 are integrally and rotatably connected to the clutch outer hub 16 by means of snap-fitting or similar methods, and the multiple second friction plates 22 are integrally and rotatably connected to the clutch inner hub 33 by means of snap-fitting or similar methods. Thus, when the oil pressure in the piston chamber P1 of the actuator end increases, the piston 17 is pushed... Figure 2 The piston 17 is pushed to the right, causing the first and second friction plates to engage tightly and rotate as a whole. The second friction plate 22 then drives the clutch inner hub 33 to rotate, thereby transmitting power to the components connected to the clutch inner hub 33. When the oil pressure decreases, the piston 17 moves to the left by the elastic element 18, and the first and second friction plates 21 and 22 return to their disengaged state, and the clutch as a whole no longer transmits power.

[0032] Preferably, a clutch outer hub seat 15 is also provided. The clutch outer hub 16 and the clutch outer hub seat 15 can be integrally formed or manufactured separately and then integrated by means such as welding.

[0033] exist Figure 2 In the illustrated scheme, the clutch outer hub 15 is fixedly connected to the shaft 2, for example, via a spline 5, so that it can rotate as a whole.

[0034] To secure the friction plates, a retaining ring 32 is provided on the axial outer side of the rightmost friction plate 31 in the first set of friction plates. Furthermore, another retaining ring 20 is provided axially at the same position as the far end of the elastic element mounting seat 19 on the outer hub seat 15 of the clutch.

[0035] In this invention, the clutch driving end is supported on the housing 1 by a single bearing 6. Furthermore, the bearing 6 is positioned close to the steel sleeve 9, ensuring that the bearing 6 provides sufficient support stiffness for the clutch and preventing interference between the clutch outer hub 15 and the transmission housing 1 during rotation. The bearing 6 is preferably a ball bearing, but other bearings, such as sliding bearings, can also be used. Compared to... Figure 1The scheme shown is a two-point support scheme with a first bearing 601 and a second bearing 602. The single bearing scheme of the present invention can effectively reduce the radial dimension of the clutch under the condition of the same axial dimension by optimizing the design and arrangement of the driving end, driven end and actuating end. This will have greater flexibility in spatial arrangement and can also effectively reduce costs.

[0036] Two sealing components are provided on the steel sleeve 9: a first sealing component 10 located on the left side in the axial direction and a second sealing component 11 located on the right side in the axial direction. The first sealing component 10 and the second sealing component 11 can have the same structure and both play a sealing role. Oil enters the piston chamber P1 through the hole on the steel sleeve 9 from the housing and is sealed by the two sealing components 10 and 11.

[0037] Furthermore, the driven end of the clutch is generally supported on the input shaft of the transmission. In this invention, two needle roller bearings 4 are used to support the driven end of the clutch inner hub 33, which is connected to the gear 3 as a whole.

[0038] Furthermore, to facilitate the engagement of the clutch with the transmission housing 1, it is preferable to provide different steps for the ball bearing 6 and the steel sleeve 9 on the transmission housing 1. The portion of the transmission housing 1 near the input shaft and the clutch has multiple steps. To accommodate this housing configuration, the clutch outer hub 16 of the present invention also has multiple steps, and the ball bearing 6 is disposed on the steps. This design makes the clutch driving end more stable and allows for more flexible design selection of the bearing 6.

[0039] from Figure 2 It can also be seen that a needle roller bearing 7 is provided between the shaft 2 and the transmission housing 1 to support the shaft 2 on the transmission housing 1. On both sides of the spline connection position between the clutch outer hub seat 15 and the shaft 2, a first thrust bearing 801 and a second thrust bearing 802 are also provided to bear the axial force of the system, prevent the clutch outer hub seat 15 from being misaligned due to bearing the axial force, and thus prevent interference between the clutch outer hub seat 15 and the transmission housing 1 during rotation.

[0040] Furthermore, such as Figure 2As shown, the clutch outer hub 15 has a first hole H1, a second hole H2, and a third hole H3, which are arranged repeatedly on the outer hub 15 according to a certain pattern; the elastic element mounting seat 19 has a fourth hole H4 arranged according to a certain pattern. An annular groove is provided on the side of the clutch outer hub 15 that contacts the inner side of the piston 17, containing a first sealing ring 12; an annular groove is provided on the outer side of the piston 17 that contacts the clutch outer hub 16, containing a second sealing ring 14. The first hole H1, the first sealing ring 12, and the second sealing ring 14 constitute the working control oil circuit of the clutch mechanism; the second hole H2 and the fourth hole H4 constitute the balance oil circuit of the clutch piston. The second hole H2 also forms a lubrication oil circuit for the ball bearing 6, the first thrust bearing 801, and the second thrust bearing 802 with the third hole H3; while the second hole H2, the third hole H3, and the fourth hole H4 can all form a lubrication oil circuit for the clutch inner hub 33.

[0041] Further, see Figure 3 In order to improve the lubrication and cooling performance of the clutch, the present invention provides small oil drain holes arranged in a certain pattern on the outer hub 16 of the clutch to reduce the thermal damage that may be caused by oil accumulation, thereby improving the lubrication and cooling performance; small oil drain holes arranged in a certain pattern are also provided on the inner hub 33 of the clutch to reduce the thermal damage that may be caused by oil accumulation, thereby improving the lubrication and cooling performance.

[0042] The various embodiments of the present invention have been described in detail above. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of the present invention without departing from the scope of the present invention are within the protection scope of this technical solution.

Claims

1. A clutch mounting assembly, comprising a clutch, said clutch comprising: The clutch outer hub assembly includes a clutch outer hub (16), which is divided into a first axial portion and a second axial portion in the axial direction. In the axial range of the first axial portion, a piston chamber (P1), a piston (17), an elastic element (18), and an elastic element mounting seat (19) are provided. In the axial range of the second axial portion, a friction plate group composed of multiple first friction plates and multiple second friction plates and a clutch inner hub (33) are provided. The elastic element (18) does not overlap with the first friction plate and the second friction plate in the axial direction, but partially overlaps with them in the radial direction. Piston (17), which is located axially in the first axial portion. A first friction plate group, formed by multiple first friction plates, is located axially in the second axial portion, and the multiple first friction plates are integrally and rotatably connected to the outer hub of the clutch. A second friction pad group, formed by multiple second friction pads, is located axially in the second axial portion, and the multiple first friction pads and the multiple second friction pads are spaced apart. The clutch inner hub (33) is integrally and rotatably connected to the plurality of second friction plates. Its features are, The clutch mounting assembly also includes a bearing (6), the clutch outer hub of the clutch is supported on a fixed component by the bearing, and the bearing overlaps with the elastic element mounting seat in the axial direction; It also includes a steel sleeve (9), and the bearing (6) is disposed axially close to the steel sleeve; The clutch outer hub also includes a clutch outer hub seat (15), which is fixedly connected to the shaft (2) passing through the center of the clutch by a spline; The fixed component is the transmission housing (1), and the part of the transmission housing that mates with the clutch outer hub is stepped. The bearing is set on one of the steps, and one end face of the bearing (6) is approximately flush with the corresponding end face of the transmission housing (1) in the axial direction. The steel sleeve (9) is set on the other step. Two sealing components are provided on the steel sleeve (9), namely a first sealing component (10) located on the left side in the axial direction and a second sealing component (11) located on the right side in the axial direction. Oil enters the piston chamber from the transmission housing (1) through the hole on the steel sleeve under the sealing of the two sealing components, the first sealing component and the second sealing component. A first hole is provided on the outer hub of the clutch. An annular groove is provided on the side of the outer hub of the clutch that contacts the radially inner side of the piston. The annular groove contains a first sealing ring. An annular groove is provided on the radially outer side of the piston that contacts the outer hub of the clutch. The groove contains a second sealing ring. The clutch outer hub seat also has a second hole and a third hole. The first hole, the second hole and the third hole are arranged in a regular repeating pattern on the outer hub seat, and the first hole, the second hole and the third hole are arranged sequentially in the axial direction. A fourth hole is regularly arranged on the elastic element mounting seat, and the second hole and the fourth hole constitute the balance oil passage of the piston; On both sides of the spline connection position between the outer hub seat (15) of the clutch and the shaft (2), a first thrust bearing (801) and a second thrust bearing (802) are provided.

2. The clutch mounting assembly according to claim 1, characterized in that, Both the outer hub and the inner hub of the clutch have regularly arranged small oil drain holes.

3. A clutch mounting assembly according to claim 1, characterized in that, The second hole and the third hole form a lubrication passage for the bearing and the thrust bearing.

4. A vehicle comprising a transmission, the transmission including a housing and a shaft, characterized in that, The vehicle also includes a clutch mounting assembly according to any one of claims 1-3.

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