clutch

Abstract

The present disclosure relates to the technical field of automatic transmissions, and in particular to a clutch. The clutch comprises: a coaxially arranged outer hub, an inner hub, and an oil guide plate; a clutch chamber is formed between the outer hub and the inner hub for accommodating a clutch plate; the outer hub includes a first radially extending extension; the oil guide plate is an annular plate, and the distance between the oil guide plate and the first extension gradually increases as its diameter decreases, forming an open structure. The clutch, through the oil guide plate, can cooperate with the first extension on the outer hub to form a lubricating oil chamber, directing lubricating oil flowing from the drive shaft into the lubricating oil chamber for preliminary collection. The oil guide plate, through its own tilted arrangement, forms an open structure, which increases the volume of the lubricating oil chamber while more quickly directing lubricating oil near the drive shaft into the clutch chamber, thereby cooling and lubricating the clutch plate in the clutch chamber.

Description

Technical Field

[0001] The present disclosure relates to the technical field of automatic transmissions, and in particular to a clutch. Background Art

[0002] There are two types of gearboxes: manual and automatic. Manual gearboxes are mainly composed of gears and shafts, and produce speed and torque changes through different gear combinations; while automatic gearboxes AT are composed of a torque converter, planetary gears and a hydraulic control system, and achieve the purpose of speed and torque changes through hydraulic transmission and gear combinations.

[0003] Automatic transmissions, with their advantages of driving comfort and reducing driver fatigue, have become a key feature of modern sedans. Automatic transmissions utilize a planetary gear mechanism to automatically shift gears based on the pressure of the accelerator pedal and vehicle speed. Drivers only need to operate the accelerator pedal to control vehicle speed, allowing them to focus on traffic without being distracted by shifting gears.

[0004] At present, the clutch structure in the gearbox often obtains lubricating oil through the oil outlet near the intermediate transmission shaft. However, the lubricating oil needs to pass through the outer hub and the inner hub to reach the clutch chamber equipped with the clutch plate. The clutch can only throw the lubricating oil to the inner hub through the rotation of the outer hub, and then throw the lubricating oil into the clutch chamber through the rotation of the inner hub. The oil supply efficiency is very low, which will affect the cooling and lubrication of the clutch plate. Summary of the Invention

[0005] In order to solve the above technical problems, the present disclosure provides a clutch.

[0006] The present disclosure provides a clutch comprising: an outer hub, an inner hub and an oil guide plate arranged coaxially;

[0007] A clutch chamber is formed between the outer hub and the inner hub for accommodating a clutch plate;

[0008] The outer hub includes a first extension portion extending in a radial direction. The oil guide plate is an annular plate. The distance between the oil guide plate and the first extension portion gradually increases in a direction in which the diameter of the oil guide plate decreases to form an open structure. A lubricating oil chamber is formed between the oil guide plate and the first extension portion.

[0009] A first oil hole is provided on the first extension portion, and a second oil hole is provided on the inner hub. The first oil hole and the second oil hole are used to connect the lubricating oil chamber and the clutch chamber.

[0010] Optionally, a plurality of oil guiding protrusions are evenly arranged along the circumferential direction on one side of the oil guiding plate facing the lubricating oil chamber. The oil guiding protrusions extend radially, and an oil guiding channel is formed between every two adjacent oil guiding protrusions.

[0011] Optionally, an oil-collecting slope is provided on the oil guide plate at a position facing the first oil hole, and the oil-collecting slope extends toward the first oil hole and is used to guide the oil into the first oil hole.

[0012] Optionally, an inner edge of the oil guide plate is bent toward a side away from the first extension portion.

[0013] Optionally, the outer hub further includes a second extension portion extending in the axial direction, and the oil guide plate includes a sleeve portion, which is sleeved on the second extension portion and is transmission-connected to the second extension portion.

[0014] Optionally, a first protrusion is provided on the outer wall of the sleeve portion, and a slot that is plugged into and fits with the first protrusion is provided on the second extension portion.

[0015] Optionally, a slope structure is provided on the top of the first protrusion, and the slope structure is used to guide the sleeve portion to the inner side of the second extension portion.

[0016] Optionally, the first protrusion is connected to the sleeve portion via a first elastic member, and the first elastic member is used to provide an elastic force that pushes the first protrusion to move toward the slot.

[0017] Optionally, a second protrusion is provided on the inner wall of the sleeve portion, and the second protrusion extends radially toward the axis and is used to support the piston assembly.

[0018] Optionally, the second protrusion is connected to the sleeve portion via a second elastic member, and the second elastic member is used to provide an elastic force that pushes the second protrusion to move toward the piston assembly.

[0019] The technical solution provided by the embodiments of the present disclosure has the following advantages over the prior art:

[0020] The clutch provided by the present invention can cooperate with the first extension portion on the outer hub to form a lubricating oil chamber through the oil guide plate, and the lubricating oil flowing out from the transmission shaft is introduced into the lubricating oil chamber to perform preliminary collection of the lubricating oil. In addition, the oil guide plate is tilted to form an open structure, which increases the volume of the lubricating oil chamber while being able to more quickly introduce the lubricating oil close to the transmission shaft into the clutch chamber, thereby cooling and lubricating the clutch plate in the clutch chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0022] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] Figure 1 This is a schematic structural diagram of a clutch according to an embodiment of the present disclosure;

[0024] Figure 2 This is a schematic structural diagram of the oil guide plate in the clutch according to an embodiment of the present disclosure.

[0025] Among them, 1. outer hub; 11. first extension portion; 12. second extension portion; 121. slot; 2. inner hub; 3. oil guide plate; 31. oil guide protrusion; 32. oil guide channel; 33. oil slope; 34. sleeve portion; 341. first protrusion; 342. second protrusion; 351. first elastic member; 352. second elastic member; 36. inclined surface structure; 41. first oil hole; 42. second oil hole; 51. clutch chamber; 52. lubricating oil chamber; 6. piston assembly. DETAILED DESCRIPTION

[0026] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features therein can be combined with each other in the absence of conflict.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0028] There are two types of gearboxes: manual and automatic. Manual gearboxes are mainly composed of gears and shafts, and produce speed and torque changes through different gear combinations; while automatic gearboxes AT are composed of a torque converter, planetary gears and a hydraulic control system, and achieve the purpose of speed and torque changes through hydraulic transmission and gear combinations.

[0029] Automatic transmissions, with their advantages of driving comfort and reducing driver fatigue, have become a key feature of modern sedans. Automatic transmissions utilize a planetary gear mechanism to automatically shift gears based on the pressure of the accelerator pedal and vehicle speed. Drivers only need to operate the accelerator pedal to control vehicle speed, allowing them to focus on traffic without being distracted by shifting gears.

[0030] At present, the clutch structure in the gearbox often obtains lubricating oil through the oil outlet near the intermediate transmission shaft. However, the lubricating oil needs to pass through the outer hub and the inner hub to reach the clutch chamber equipped with the clutch plate. The clutch can only throw the lubricating oil to the inner hub through the rotation of the outer hub, and then throw the lubricating oil into the clutch chamber through the rotation of the inner hub. The oil supply efficiency is very low, which will affect the cooling and lubrication of the clutch plate.

[0031] Based on this, this embodiment provides a clutch in which an oil guide plate cooperates with a first extension on an outer hub to form a lubricating oil chamber, directing lubricating oil flowing from the drive shaft into the lubricating oil chamber for preliminary collection. Furthermore, the oil guide plate, through its own tilted arrangement, forms an open structure, which increases the volume of the lubricating oil chamber while more quickly directing lubricating oil near the drive shaft into the clutch chamber, thereby cooling and lubricating the clutch plates within the clutch chamber. This is described in detail below through specific embodiments:

[0032] Reference Figure 1 and Figure 2 As shown, a clutch provided in this embodiment includes: an outer hub 1, an inner hub 2 and an oil guide plate 3 arranged coaxially; a clutch chamber 51 is formed between the outer hub 1 and the inner hub 2 for accommodating a clutch plate; the outer hub 1 includes a first extension portion 11 extending radially, the oil guide plate 3 is an annular plate, and the distance between the oil guide plate 3 and the first extension portion 11 gradually increases along the direction in which its diameter decreases to form an open structure. It should be understood that the open structure is arranged toward the position where the lubricating oil is discharged from the transmission shaft, and a lubricating oil chamber 52 is formed between the oil guide plate 3 and the first extension portion 11; a first oil hole 41 is provided on the first extension portion 11, and a second oil hole 42 is provided on the inner hub 2. The first oil hole 41 and the second oil hole 42 are used to connect the lubricating oil chamber 52 and the clutch chamber 51.

[0033] Among them, the oil guide plate 3 can cooperate with the first extension portion 11 on the outer hub 1 to form a lubricating oil chamber 52, and the lubricating oil flowing out of the drive shaft is introduced into the lubricating oil chamber 52 to perform preliminary collection of the lubricating oil. Moreover, the oil guide plate 3 forms an open structure through its own inclined setting. While increasing the volume of the lubricating oil chamber 52, it can more quickly introduce the lubricating oil close to the drive shaft into the clutch chamber 51, thereby cooling and lubricating the clutch plate in the clutch chamber 51.

[0034] Continue to refer to Figure 1 and Figure 2As shown, a plurality of oil guiding protrusions 31 are evenly arranged along the circumferential direction on one side of the oil guide plate 3 facing the lubricating oil chamber 52. The oil guiding protrusions 31 extend radially, and an oil guiding channel 32 is formed between every two adjacent oil guiding protrusions 31. This arrangement can more quickly guide the lubricating oil close to the transmission shaft into the clutch chamber 51, and is less likely to form vortices in the lubricating oil chamber 52, further reducing the difficulty of the lubricating oil passing through the first oil hole 41 and improving the oil guiding efficiency.

[0035] In some embodiments, an oil-collecting slope 33 is provided on the oil guide plate 3 at a position directly opposite the first oil hole 41. The oil-collecting slope 33 extends toward the first oil hole 41 and is used to guide the oil into the first oil hole 41. Through the provision of the oil-collecting slope 33, the oil flowing in the oil guide channel 32 can quickly change its direction of movement when it reaches the position of the oil-collecting slope 33 and flow toward the first oil hole 41, thereby further improving the oil guiding efficiency.

[0036] In a further embodiment, the inner edge of the oil guide plate 3 is bent toward a side away from the first extension portion 11; it should be understood that the overall structure of the oil guide plate 3 can be a stamped part, and the oil guide plate 3 itself forms an open structure by tilting, and the bending at the inner edge can be used to further increase the opening amplitude, thereby further improving the ability of the oil guide plate 3 to guide oil into the lubricating oil chamber 52.

[0037] Continue to refer to Figure 1 and Figure 2 As shown, the outer hub 1 also includes a second extension portion 12 extending in the axial direction, and the oil guide plate 3 includes a sleeve portion 34, which is sleeved on the second extension portion 12 and is transmission-connected to the second extension portion 12; the sleeve portion 34 and the second extension portion 12 can support each other in the radial direction to improve the overall stability of the clutch.

[0038] In some embodiments, a first protrusion 341 is provided on the outer wall of the sleeve portion 34, and a card slot 121 that is plugged into and cooperates with the first protrusion 341 is provided on the second extension portion 12; it should be noted that the first protrusion 341 can be a circular protrusion or a square protrusion, as long as it can match the shape of the card slot 121 and form a stable connection structure after plugging, thereby ensuring that the oil guide plate 3 and the outer hub 1 are stably fixedly connected.

[0039] In a further embodiment, a sloped structure 36 is provided at the top of the first protrusion 341, and the sloped structure 36 is used to guide the sleeve portion 34 to the inner side of the second extension portion 12; it should be understood that when the sleeve portion 34 of the oil guide plate 3 is installed to the inner side of the second extension portion 12 of the outer hub 1, it is installed by plugging. During the plugging process, the sloped structure 36 is located at the front end of the entire first protrusion 341, so that its own slope can be used to better perform the introduction work and prevent the first protrusion 341 from being stuck during the insertion process.

[0040] In some embodiments, the first protrusion 341 is connected to the sleeve portion 34 through a first elastic member 351, and the first elastic member 351 is used to provide an elastic force that pushes the first protrusion 341 to move toward the slot 121; wherein, the first elastic member 351 can be formed by opening a plurality of axially extending notches along the circumference of the sleeve portion 34, thereby forming a structure with radial elasticity on the side wall of the sleeve portion 34 itself, that is, the annular structure of the sleeve portion 34 is divided into a plurality of arc-shaped sheet structures, so that the first protrusion 341 can move in the radial direction, and the sleeve portion 34 itself is made of metal or plastic and has a certain elasticity.

[0041] In a further embodiment, a second protrusion 342 is provided on the inner wall of the sleeve portion 34, and the second protrusion 342 extends radially toward the axis and is used to support the piston assembly 6; it should be understood that the sleeve portion 34 is inserted between the piston assembly 6 and the outer hub 1, connected to the outer hub 1 outwardly, and abutted against the piston assembly 6 inwardly, so that the entire clutch structure can support each other during rotation, with stronger integrity and better stability.

[0042] In some embodiments, the second protrusion 342 is connected to the sleeve portion 34 through a second elastic member 352, and the second elastic member 352 is used to provide an elastic force that pushes the second protrusion 342 to move toward the piston assembly 6; wherein, the second elastic member 352 can also be formed by opening a plurality of axially extending notches in the circumferential direction of the sleeve portion 34, thereby forming a structure with radial elasticity on the side wall of the sleeve portion 34 itself, that is, the annular structure of the sleeve portion 34 is divided into a plurality of arc-shaped sheet structures, so that the second protrusion 342 can move in the radial direction, and the sleeve portion 34 itself is made of metal or plastic and has a certain elasticity.

[0043] The specific implementation method and implementation principle are the same as those of the above embodiment, and can bring the same or similar technical effects, which will not be described here one by one. For details, please refer to the description of the above clutch embodiment.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0045] The foregoing description is intended only to provide specific embodiments of the present disclosure, intended to enable those skilled in the art to understand and implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the embodiments described herein, but rather to be construed in the broadest manner consistent with the principles and novel features disclosed herein.

Claims

1. A clutch, characterized in that: include: An outer hub (1), an inner hub (2) and an oil guide plate (3) are coaxially arranged; A clutch chamber (51) is formed between the outer hub (1) and the inner hub (2) for accommodating a clutch plate; The outer hub (1) includes a first extension portion (11) extending in a radial direction, the oil guide plate (3) is an annular plate, and the distance between the oil guide plate (3) and the first extension portion (11) gradually increases in a direction in which the diameter of the oil guide plate (3) decreases to form an open structure, and a lubricating oil chamber (52) is formed between the oil guide plate (3) and the first extension portion (11); A first oil hole (41) is provided on the first extension portion (11), and a second oil hole (42) is provided on the inner hub (2). The first oil hole (41) and the second oil hole (42) are used to connect the lubricating oil chamber (52) and the clutch chamber (51).

2. The clutch according to claim 1, characterized in that: A plurality of oil guide protrusions (31) are evenly arranged along the circumference on one side of the oil guide plate (3) facing the lubricating oil chamber (52); the oil guide protrusions (31) extend radially, and an oil guide channel (32) is formed between every two adjacent oil guide protrusions (31).

3. The clutch according to claim 1, characterized in that: An oil collecting slope (33) is provided on the oil guide plate (3) at a position facing the first oil hole (41). The oil collecting slope (33) extends toward the first oil hole (41) and is used to guide oil into the first oil hole (41).

4. The clutch according to claim 1, characterized in that: The inner edge of the oil guide plate (3) is bent toward a side away from the first extension portion (11).

5. The clutch according to any one of claims 1 to 4, characterized in that: The outer hub (1) further comprises a second extension portion (12) extending in the axial direction, and the oil guide plate (3) comprises a sleeve portion (34), wherein the sleeve portion (34) is sleeved on the second extension portion (12) and is in transmission connection with the second extension portion (12).

6. The clutch according to claim 5, characterized in that: A first protrusion (341) is provided on the outer wall of the sleeve portion (34), and a clamping groove (121) that is plugged and matched with the first protrusion (341) is provided on the second extension portion (12).

7. The clutch according to claim 6, characterized in that: A slope structure (36) is provided on the top of the first protrusion (341), and the slope structure (36) is used to guide the sleeve portion (34) to the inner side of the second extension portion (12).

8. The clutch according to claim 6, characterized in that: The first protrusion (341) is connected to the sleeve portion (34) via a first elastic member (351), and the first elastic member (351) is used to provide an elastic force that pushes the first protrusion (341) to move toward the slot (121).

9. The clutch according to claim 5, characterized in that: A second protrusion (342) is provided on the inner wall of the sleeve portion (34), and the second protrusion (342) extends radially toward the axis and is used to support the piston assembly (6).

10. The clutch according to claim 9, characterized in that: The second protrusion (342) is connected to the sleeve portion (34) via a second elastic member (352), and the second elastic member (352) is used to provide an elastic force that pushes the second protrusion (342) to move toward the piston assembly (6).

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