A transmission clutch

Abstract

This utility model belongs to the field of clutch technology, and more specifically relates to a nested dual-gear clutch for a transmission, including an output shaft, two driven gears, an inner clutch inner ring, a common inner and outer clutch ring, an outer clutch outer ring, an inner friction plate assembly, an outer friction plate assembly, an inner clutch piston, and an outer clutch piston. The two driven gears are respectively connected to the inner clutch inner ring and the outer clutch outer ring. The inner clutch inner ring is rotatably connected to the output shaft, the common inner and outer clutch ring is fixedly connected to the output shaft, and the outer clutch outer ring is rotatably connected to the common inner and outer clutch ring. Friction plate assemblies are provided between the inner clutch inner ring and the common inner and outer clutch ring, and between the outer clutch outer ring and the common inner and outer clutch ring. The friction plate assemblies are engaged or disengaged by the piston driving the friction plate assemblies. Independent control of the two driven gears can effectively reduce the power interruption time during gear shifting, making gear shifting smoother and improving driving comfort.

Description

Technical Field

[0001] This utility model belongs to the field of clutch technology, and more specifically relates to a nested double gear clutch for a transmission. Background Technology

[0002] In traditional transmissions, the clutch, as a key component for power transmission, has a relatively simple structure and working principle. A single clutch is usually used to engage and disengage power. However, this design has obvious limitations in multi-gear transmissions. When a vehicle needs to switch between different gears, the response speed and control precision of a single clutch are often insufficient to meet the requirements for fast and smooth gear shifting.

[0003] For example, during vehicle acceleration, if the clutch engages too slowly, it will delay power transmission and affect the vehicle's acceleration performance. Conversely, during deceleration or braking, if the clutch does not disengage quickly enough, it can easily cause the engine to stall or the vehicle to vibrate. Furthermore, with prolonged use, the performance of a traditional clutch gradually declines due to wear on the friction plates, leading to reduced power transmission efficiency and further affecting the overall performance and lifespan of the transmission. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a transmission clutch that independently controls the two driven gears, which can effectively reduce the power interruption time during gear shifting, making gear shifting smoother and improving driving comfort.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a transmission clutch, comprising an output shaft and two driven gears located on the output shaft, a nested friction plate clutch disposed between the two driven gears and the output shaft, the nested friction plate clutch comprising an inner clutch inner ring, a common inner and outer clutch ring, and an outer clutch outer ring, the two driven gears respectively connecting the inner clutch inner ring and the outer clutch outer ring, the inner clutch inner ring being rotatably connected to the output shaft, the common inner and outer clutch ring being fixedly connected to the output shaft, the outer clutch outer ring being rotatably connected to the common inner and outer clutch ring, an inner friction plate assembly disposed between the inner clutch inner ring and the common inner and outer clutch ring, and an outer friction plate assembly disposed between the outer clutch outer ring and the common inner and outer clutch ring;

[0006] Both the inner and outer friction plate groups include several cross-arranged moving and stationary friction plates. The stationary friction plates of the inner and outer friction plate groups are connected to the inner and outer sides of the common ring of the inner and outer clutches respectively by splines. The moving friction plates of the inner and outer friction plate groups are connected to the inner ring of the inner clutch and the outer ring of the outer clutch respectively by splines. The moving and stationary friction plates can slide axially through the splines.

[0007] It also includes an inner clutch piston and an outer clutch piston corresponding to the inner friction plate group and the outer friction plate group, and both the inner clutch piston and the outer clutch piston are provided with return springs. Both the inner clutch piston and the outer clutch piston are hydraulically driven.

[0008] Furthermore, an inner drive chamber is provided between the output shaft and the common ring of the inner and outer clutches, the piston of the inner clutch slides in the inner drive chamber, and a first hydraulic channel is connected to the inner drive chamber.

[0009] Furthermore, a sealing cover is provided on the output shaft, and an outer drive cavity is formed between the sealing cover and the common ring of the inner and outer clutches. The piston of the outer clutch slides in the outer drive cavity, and a second hydraulic channel is connected to the outer drive cavity.

[0010] Furthermore, an inner retaining ring corresponding to the inner friction plate group is provided on the inner side of the common ring of the inner and outer clutches, and an outer retaining ring corresponding to the outer friction plate group is provided on the outer side of the common ring of the inner and outer clutches, thereby limiting the inner friction plate group and the outer friction plate group.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. By setting up an internal clutch and an external clutch, independent control of the two driven gears is achieved. The independent control method can effectively reduce the power interruption time during gear shifting, making gear shifting smoother and improving driving comfort.

[0013] 2. The spline connection between the moving friction plate and the stationary friction plate not only ensures the sliding freedom of the friction plate in the axial direction, but also ensures the stability and reliability of the friction plate under force, and reduces the need for additional parts to connect the friction plate and drive its movement, thus reducing the size of the clutch.

[0014] 3. During operation, the clutch can quickly engage and disengage through the combined action of hydraulic drive and return spring, avoiding excessive wear of friction plates during frequent gear shifts in traditional clutches;

[0015] 4. The nested clutch adopts a structure in which the inner and outer clutches share a common ring. By using the radial dimension to set the inner and outer clutches, the axial dimension can be shortened, the clutch weight can be reduced, and the number of parts can be reduced, thereby improving the product's cost performance and competitiveness. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the clutch of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the clutch of this utility model.

[0018] Reference numerals: Output shaft 1; Driven gear 2; Inner ring of inner clutch 3; Common ring of inner and outer clutches 4; Outer ring of outer clutch 5; Inner friction plate assembly 6; Outer friction plate assembly 7; Inner clutch piston 8; Outer clutch piston 9; Return spring 10; Inner drive chamber 11; First hydraulic channel 12; Sealing cover 13; Outer drive chamber 14; Second hydraulic channel 15; Inner retaining ring 16; Outer retaining ring 17. Detailed Implementation

[0019] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0021] Reference Figure 1 and Figure 2 The present invention will be further described below.

[0022] A transmission clutch includes an output shaft 1 and two driven gears 2 located on the output shaft 1. A nested friction plate clutch is disposed between the two driven gears 2 and the output shaft 1. The nested friction plate clutch includes an inner clutch inner ring 3, a shared inner and outer clutch ring 4, and an outer clutch outer ring 5. The two driven gears 2 are respectively connected to the inner clutch inner ring 3 and the outer clutch outer ring 5. The inner clutch inner ring 3 is rotatably connected to the output shaft 1. The shared inner and outer clutch ring 4 is fixedly connected to the output shaft 1. The outer clutch outer ring 5 is rotatably connected to the shared inner and outer clutch ring 4. An inner friction plate assembly 6 is disposed between the inner clutch inner ring 3 and the shared inner and outer clutch ring 4. A friction plate assembly 6 is disposed between the outer clutch outer ring 5 and the shared inner and outer clutch ring 4. The system includes an outer friction plate group 7; both the inner friction plate group 6 and the outer friction plate group 7 comprise several cross-arranged moving and stationary friction plates. The stationary friction plates of the inner friction plate group 6 and the outer friction plate group 7 are connected to the inner and outer sides of the common ring 4 of the inner and outer clutches respectively via splines. The moving friction plates of the inner friction plate group 6 and the outer friction plate group 7 are connected to the inner ring 3 of the inner clutch and the outer ring 5 of the outer clutch respectively via splines. The moving and stationary friction plates can slide axially through the splines. The system also includes an inner clutch piston 8 and an outer clutch piston 9 corresponding to the inner friction plate group 6 and the outer friction plate group 7. Both the inner clutch piston 8 and the outer clutch piston 9 are equipped with return springs 10, and both are hydraulically driven. Figure 1 and Figure 2 As shown, when the hydraulically driven inner clutch piston 8 moves towards the inner friction plate group 6, it squeezes the moving and stationary friction plates of the inner friction plate group 6. Since the moving and stationary friction plates are connected by splines, the squeezing of the inner clutch piston 8 can press the intersecting moving and stationary friction plates into contact with each other, thereby connecting the inner ring 3 of the inner clutch with the common ring 4 of the inner and outer clutches through friction. When the driven gear 2 connected to the inner ring 3 of the inner clutch is driven, it can transmit power to the output shaft 1 through the inner ring 3 of the inner clutch and the common ring 4 of the inner and outer clutches, thereby driving the output shaft 1 to rotate. However, the outer clutch piston 9 is not driven by hydraulic pressure, so its moving and stationary friction plates are not squeezed and are released from each other, causing the outer ring 5 of the outer clutch to separate from the common ring 4 of the inner and outer clutches. The power of the driven gear 2 connected to it will not be transmitted to the output shaft 1. Figure 1 and Figure 2As shown, in this preferred embodiment, an inner drive chamber 11 is provided between the output shaft 1 and the shared ring 4 of the inner and outer clutches. The inner clutch piston 8 slides within the inner drive chamber 11. A first hydraulic channel 12 is connected to the inner drive chamber 11, through which high-pressure hydraulic oil is supplied to the inner drive chamber 11, thereby pushing the inner clutch piston 8 toward the inner friction plate assembly 6 and squeezing the inner friction plate assembly 6. When the hydraulic oil loses pressure, the inner clutch piston 8 will move in the opposite direction and reset through the return spring 10. After the inner friction plate assembly 6 loses its compression, the moving friction plate separates from the stationary friction plate. Figure 1 and Figure 2 As shown, in this preferred embodiment, a sealing cover 13 is provided on the output shaft 1. An outer drive chamber 14 is formed between the sealing cover 13 and the shared ring 4 of the inner and outer clutches. The outer clutch piston 9 slides within the outer drive chamber 14. A second hydraulic channel 15 is connected to the outer drive chamber 14. Similar to the inner clutch piston 8, high-pressure hydraulic oil enters the outer drive chamber 14 through the second hydraulic channel 15, pushing the outer clutch piston 9. When pressure is lost, the return spring 10 pushes the outer clutch piston 9 in the opposite direction. Figure 1 and Figure 2 As shown in this example, preferably, the inner side of the inner and outer clutch common ring 4 is provided with an inner retaining ring 16 corresponding to the inner friction plate group 6, and the outer side of the inner and outer clutch common ring 4 is provided with an outer retaining ring 17 corresponding to the outer friction plate group 7. The inner retaining ring 16 and the outer retaining ring 17 limit the inner friction plate group 6 and the outer friction plate group 7.

[0023] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A transmission clutch, characterized by: The device includes an output shaft, two driven gears located on the output shaft, and a nested friction plate clutch between the two driven gears and the output shaft. The nested friction plate clutch includes an inner clutch inner ring, a common inner and outer clutch ring, and an outer clutch outer ring. The two driven gears are respectively connected to the inner clutch inner ring and the outer clutch outer ring. The inner clutch inner ring is rotatably connected to the output shaft, the common inner and outer clutch ring is fixedly connected to the output shaft, and the outer clutch outer ring is rotatably connected to the common inner and outer clutch ring. An inner friction plate group is provided between the inner clutch inner ring and the common inner and outer clutch ring, and an outer friction plate group is provided between the outer clutch outer ring and the common inner and outer clutch ring. Both the inner and outer friction plate groups include several cross-arranged moving and stationary friction plates. The stationary friction plates of the inner and outer friction plate groups are connected to the inner and outer sides of the common ring of the inner and outer clutches respectively by splines. The moving friction plates of the inner and outer friction plate groups are connected to the inner ring of the inner clutch and the outer ring of the outer clutch respectively by splines. The moving and stationary friction plates can slide axially through the splines. It also includes an inner clutch piston and an outer clutch piston corresponding to the inner friction plate group and the outer friction plate group, and both the inner clutch piston and the outer clutch piston are provided with return springs. Both the inner clutch piston and the outer clutch piston are hydraulically driven.

2. The transmission clutch of claim 1, wherein: An inner drive chamber is provided between the output shaft and the common ring of the inner and outer clutches. The piston of the inner clutch slides in the inner drive chamber, and a first hydraulic channel is connected to the inner drive chamber.

3. The transmission clutch of claim 1, wherein: A sealing cover is provided on the output shaft, and an outer drive cavity is formed between the sealing cover and the common ring of the inner and outer clutches. The piston of the outer clutch slides in the outer drive cavity, and a second hydraulic channel is connected to the outer drive cavity.

4. The transmission clutch of claim 1, wherein: The inner side of the common ring for the inner and outer clutches is provided with an inner retaining ring corresponding to the inner friction plate group, and the outer side of the common ring for the inner and outer clutches is provided with an outer retaining ring corresponding to the outer friction plate group. The inner and outer retaining rings limit the movement of the inner and outer friction plate groups.

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