Clutch for hybrid power gearbox

Abstract

The utility model belongs to the technical field of hybrid power automobiles, and particularly relates to a clutch for a hybrid power gearbox. The clutch for the hybrid power gearbox comprises a clutch piston, a pressure bearing part of the clutch piston is a movable wall of a pressure oil cavity, and an extension part of the clutch piston extends out of the pressure oil cavity; and the clutch push rod is arranged in the first clutch base in a sliding manner and is suitable for being pushed to the clutch steel sheet by the extension part when the compression part is compressed to drive the extension part, so that the clutch steel sheet is combined with the clutch friction plate. According to the clutch for the hybrid power gearbox, the clutch push rod is additionally arranged between the clutch steel sheet and the clutch piston, the length of the clutch push rod is adjusted, namely, the extension length of the clutch piston in the axial direction is adjusted, and therefore the clutch can be arranged in the gearbox more flexibly.

Description

Technical Field

[0001] The utility model belongs to the technical field of hybrid vehicles, and in particular relates to a clutch for a hybrid power transmission. Background Art

[0002] The vehicle clutch is usually achieved by the clutch piston directly pushing the steel plate against the friction plate to complete the locking engagement. For example, the patent document with application number 202321025886.6 provides a hybrid vehicle transmission dual clutch assembly, which uses the clutch piston to directly push the clutch plate group.

[0003] The clutch piston is a lamellar structure, so the length it can reach in the axial direction is limited. Even if thickening is used, the extension in the axial direction is also limited, which will restrict the arrangement of the clutch in the gearbox. Utility Model Content

[0004] The utility model aims to provide a clutch for a hybrid power transmission to solve the technical problem that the arrangement of the clutch in the transmission is restricted due to the limited extension of the clutch piston in the axial direction of the existing hybrid power transmission.

[0005] In order to solve the above technical problems, the utility model provides a clutch for a hybrid power transmission, including: a clutch piston, whose pressure-bearing part is the movable wall of a pressure oil chamber, and an extension part extends out of the pressure oil chamber; a clutch push rod, which is slidably arranged in a first clutch base and is suitable for being pushed toward a clutch steel plate by the extension part when the pressure-bearing part is pressed and drives the extension part, so that the clutch steel plate is combined with the clutch friction plate.

[0006] Furthermore, a piston retaining ring is provided between the extension part and the clutch push rod; the inner ring wall of the piston retaining ring extends into the extension part to form a return spring contact part; a return spring is provided in the first clutch base, and is suitable for resetting the return spring contact part when the pressure-bearing part loses pressure, so as to reset the clutch push rod and separate the clutch steel plate from the clutch friction plate.

[0007] Furthermore, a push rod through hole adapted to the clutch push rod is provided in the first clutch base.

[0008] Furthermore, the first clutch base is sleeved on the second clutch base; the second clutch base is provided with a piston annular baffle, and its two walls are respectively sealed and connected with the second clutch base and the pressure-bearing part to form the pressure oil chamber between the piston annular baffle and the outer wall of the pressure-bearing part; the second clutch base is provided with a high-pressure oil circuit connected with the pressure oil chamber.

[0009] Further, the pressed part is in a "冂" shape, and its two walls are respectively sealed and connected to the first clutch base and the second clutch base to form a balance oil cavity between the inner wall of the pressed part and the first clutch base; a main lubricating and cooling oil passage is provided in the second clutch base; a balance oil cavity passage is provided in the second clutch base, which communicates the main lubricating and cooling oil passage with the balance oil cavity.

[0010] Further, a third clutch base is sleeved on the second clutch base, and a first bearing is provided between the third clutch base and the second clutch base, and a second bearing is provided between the third clutch base and the first clutch base; the gap formed by the first bearing and the second bearing forms an inner bearing passage; the main lubricating and cooling oil passage communicates with the inner bearing passage.

[0011] Further, a third bearing is provided on the third clutch base; the third bearing is covered with a clutch housing, which is sealed and connected to the third clutch base; an outer hub, which is sealed and connected to the clutch housing and the first clutch base to form a steel sheet friction plate accommodating part; the gap formed by the third bearing forms an outer bearing passage; the main lubricating and cooling oil passage communicates with the outer bearing passage.

[0012] Further, an inner hub is provided at the end of the inner bearing passage, which is sealed and connected to the third clutch base; an oil collecting tray is also provided at the end of the inner bearing passage, which is arranged between the inner hub and the first clutch base to form a seal; an inner hub through hole is opened on the inner hub to allow the inner bearing passage to merge into the outer bearing passage; the inner hub extends into the steel sheet friction plate accommodating part to form a steel sheet friction plate passage, and the lubricating and cooling oil in the outer bearing passage is introduced into the steel sheet friction plate accommodating part.

[0013] The beneficial effect of the present utility model is that the present utility model aims to solve the technical problem that in the existing hybrid transmission, due to the limited extension of the clutch piston in the axial direction, the layout of the clutch in the transmission is restricted. In this hybrid transmission clutch, a clutch push rod is additionally arranged between the clutch steel sheet and the clutch piston. When the pressed part of the clutch piston is pressed, it will drive the outer extension part to move towards the clutch steel sheet, and the movement of the outer extension part will push the clutch push rod towards the clutch steel sheet, so that the clutch steel sheet and the clutch friction plate are combined. Adjusting the length of the clutch push rod is equivalent to adjusting the extension length of the clutch piston in the axial direction, thereby making the layout of the clutch in the transmission more flexible. Description of the Drawings

[0014] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the prior descriptions will be briefly introduced below. Obviously, the drawings in the following description are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a cross-sectional view of a clutch for a hybrid power transmission of the utility model;

[0016] In the figure:

[0017] Clutch piston 100, pressure receiving portion 110, extension portion 120,

[0018] Pressure oil chamber 200,

[0019] Clutch push rod 300,

[0020] The first clutch base 410, the push rod through hole 411, the balance oil chamber 412,

[0021] The second clutch base 420, the piston annular baffle 421, the main lubricating cooling oil channel 422, the balance oil chamber channel 423,

[0022] The third clutch base 430, the first bearing 431, the second bearing 432, the inner bearing channel 433, the third bearing 434, the outer bearing channel 435,

[0023] Clutch steel plate 510, clutch friction plate 520,

[0024] Piston retaining ring 610, return spring contact portion 611, return spring 620,

[0025] Clutch housing 710, outer hub 720, steel plate friction plate accommodating portion 730, inner hub 740, inner hub through hole 741, oil collecting pan 750, steel plate friction plate channel 760,

[0026] Inlet 800 of the high pressure oil circuit. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments of ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0028] Example:

[0029] like Figure 1 As shown, the utility model provides a clutch for a hybrid power transmission, comprising: a clutch piston 100, wherein the pressure-bearing portion 110 is a movable wall of a pressure oil chamber 200, and an extension portion 120 extends out of the pressure oil chamber 200; a clutch push rod 300, which is slidably arranged in a first clutch base 410, and is suitable for being pushed toward a clutch steel plate 510 by the extension portion 120 when the pressure-bearing portion 110 is pressed and drives the extension portion 120, so that the clutch steel plate 510 is combined with the clutch friction plate 520.

[0030] The clutch for the hybrid transmission is additionally provided with a clutch push rod 300 between the clutch steel plate 510 and the clutch piston 100. When the pressure-bearing portion 110 of the clutch piston 100 is compressed, the extension portion 120 will be driven to move toward the clutch steel plate 510. The movement of the extension portion 120 will push the clutch push rod 300 toward the clutch steel plate 510, so that the clutch steel plate 510 is combined with the clutch friction plate 520. Adjusting the length of the clutch push rod 300 is equivalent to adjusting the extension length of the clutch piston 100 in the axial direction, thereby making the arrangement of the clutch in the transmission more flexible.

[0031] like Figure 1 As shown, a piston retaining ring 610 may be provided between the extension portion 120 and the clutch push rod 300; the inner ring wall of the piston retaining ring 610 extends into the extension portion 120 to form a reset spring contact portion 611; a reset spring 620 is provided in the first clutch base 410, and is suitable for resetting the reset spring contact portion 611 when the pressure-bearing portion 110 loses pressure, so as to reset the clutch push rod 300 and separate the clutch steel plate 510 from the clutch friction plate 520.

[0032] In at least one embodiment, a push rod through hole 411 adapted to the clutch push rod 300 is provided in the first clutch base 410 for arranging the clutch push rod 300 .

[0033] like Figure 1 As shown, in at least one embodiment, the pressure oil chamber 200 can be obtained by the following method: the first clutch base 410 is sleeved on the second clutch base 420; the second clutch base 420 is provided with a piston annular baffle 421, and its two walls are respectively sealed and connected with the second clutch base 420 and the pressure receiving part 110, so as to form the pressure oil chamber 200 between the piston annular baffle 421 and the outer wall of the pressure receiving part 110; the second clutch base 420 is provided with a high-pressure oil circuit connected with the pressure oil chamber 200. It should be noted that the high-pressure oil circuit is a vertical inward channel in the cross-sectional view of this perspective, so only the inlet 800 of the high-pressure oil circuit can be seen.

[0034] The clutch piston 100 needs lubrication and cooling. In at least one embodiment, the pressed part 110 is in a shape of "冂", and its two walls are respectively and sealingly connected to the first clutch base 410 and the second clutch base 420, so as to form a balance oil cavity 412 between the inner wall of the pressed part 110 and the first clutch base 410; a main lubrication and cooling oil passage 422 is provided in the second clutch base 420; a balance oil cavity passage 423 is provided in the second clutch base 420, which communicates the main lubrication and cooling oil passage 422 with the balance oil cavity 412.

[0035] The clutch steel sheet 510 and the clutch friction plate 520 also need cooling. In at least one embodiment, a third clutch base 430 is sleeved on the second clutch base 420, and a first bearing 431 is provided between the third clutch base 430 and the second clutch base 420, and a second bearing 432 is provided between the third clutch base 430 and the first clutch base 410; the gap formed by the first bearing 431 and the second bearing 432 forms an inner bearing passage 433; the main lubrication and cooling oil passage 422 communicates with the inner bearing passage 433.

[0036] A third bearing 434 is provided on the third clutch base 430; the third bearing 434 is covered with a clutch housing 710, which is sealingly connected to the third clutch base 430; an outer hub 720, which is sealingly connected to the clutch housing 710 and the first clutch base 410, forms a steel sheet and friction plate accommodating part 730; the gap formed by the third bearing 434 forms an outer bearing passage 435; the main lubrication and cooling oil passage 422 communicates with the outer bearing passage 435.

[0037] An inner hub 740 is provided at the end of the inner bearing passage 433, which is sealingly connected to the third clutch base 430; an oil collecting pan 750 is also provided at the end of the inner bearing passage 433, which is arranged between the inner hub 740 and the first clutch base 410 to form a seal; an inner hub through hole 741 is opened on the inner hub 740 to enable the inner bearing passage 433 to flow into the outer bearing passage 435; the inner hub 740 extends into the steel sheet and friction plate accommodating part 730 to form a steel sheet and friction plate passage 760, and guides the lubrication and cooling oil in the outer bearing passage 435 into the steel sheet and friction plate accommodating part 730.

[0038] To sum up, the clutch of the hybrid gearbox is additionally provided with a clutch push rod between the clutch steel plate and the clutch piston. When the pressure-bearing part of the clutch piston is pressurized, the outer extension part will drive the movement toward the clutch steel plate. The movement of the outer extension part will push the clutch push rod toward the clutch steel plate, so that the clutch steel plate is combined with the clutch friction plate. Adjusting the length of the clutch push rod is equivalent to adjusting the extension length of the clutch piston in the axial direction, so that the arrangement of the clutch in the gearbox can be more flexible.

[0039] In the embodiments provided in this application, it should be understood that the disclosed systems and devices can be implemented in other ways. The embodiments described above are only exemplary. For example, the division of the mechanism is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0040] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0041] Based on the above ideal embodiments of the utility model, through the above description, relevant technicians can make various changes and modifications without departing from the technical concept of the utility model. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A clutch for a hybrid transmission, characterized in that: Comprising: A clutch piston (100), whose pressure-receiving part (110) is the movable wall of a pressure oil chamber (200), and whose extension part (120) extends out of the pressure oil chamber (200); A clutch push rod (300), which is slidably arranged in a first clutch base (410) and is adapted to be pushed by the extension part (120) towards a clutch steel sheet (510) when the pressure-receiving part (110) is pressured to drive the extension part (120), so that the clutch steel sheet (510) is combined with a clutch friction plate (520).

2. The clutch for a hybrid transmission according to claim 1, wherein A piston snap ring (610) is provided between the extension part (120) and the clutch push rod (300); The inner ring wall of the piston snap ring (610) extends into the extension part (120) to form a reset spring contact part (611); A reset spring (620) is provided in the first clutch base (410) and is adapted to reset the reset spring contact part (611) when the pressure-receiving part (110) loses pressure, so as to reset the clutch push rod (300) and separate the clutch steel sheet (510) from the clutch friction plate (520).

3. The clutch for a hybrid transmission according to claim 1, wherein A push rod through hole (411) adapted to the clutch push rod (300) is provided in the first clutch base (410).

4. The clutch for a hybrid transmission according to claim 1, wherein The first clutch base (410) is sleeved on a second clutch base (420); A piston annular baffle (421) is provided on the second clutch base (420), and its two walls are respectively hermetically connected to the second clutch base (420) and the pressure-receiving part (110) to form the pressure oil chamber (200) between the outer wall of the piston annular baffle (421) and the pressure-receiving part (110); A high-pressure oil passage communicating with the pressure oil chamber (200) is provided on the second clutch base (420).

5. The clutch for a hybrid transmission according to claim 4, wherein The pressure-receiving part (110) is in a U shape, and its two walls are respectively hermetically connected to the first clutch base (410) and the second clutch base (420) to form a balance oil chamber (412) between the inner wall of the pressure-receiving part (110) and the first clutch base (410); A main lubricating and cooling oil passage (422) is provided in the second clutch base (420); A balance oil chamber passage (423) is provided in the second clutch base (420), and it communicates the main lubricating and cooling oil passage (422) with the balance oil chamber (412).

6. The clutch for a hybrid transmission according to claim 5, wherein A third clutch base (430) is sleeved on the second clutch base (420), a first bearing (431) is provided between the third clutch base (430) and the second clutch base (420), and a second bearing (432) is provided between the third clutch base (430) and the first clutch base (410); A gap formed by the first bearing (431) and the second bearing (432) forms an inner bearing channel (433); The main lubrication cooling oil channel (422) is in communication with the inner bearing channel (433).

7. The hybrid power transmission clutch according to claim 6, characterized in that: The third clutch base (430) is provided with a third bearing (434); The third bearing (434) is covered with a clutch housing (710) which is sealed and connected to the third clutch base (430); An outer hub (720) which is sealingly connected to the clutch housing (710) and the first clutch base (410) to form a steel plate friction plate accommodating portion (730); The gap formed by the third bearing (434) forms an outer bearing channel (435); The main lubrication cooling oil channel (422) is in communication with the outer bearing channel (435).

8. The hybrid transmission clutch according to claim 7, characterized in that: An inner hub (740) is provided at the end of the inner bearing channel (433) and is sealedly connected to the third clutch base (430); An oil collecting pan (750) is also provided at the end of the inner bearing channel (433), and is arranged between the inner hub (740) and the first clutch base (410) to form a seal; The inner hub (740) is provided with an inner hub through hole (741) so that the inner bearing channel (433) can merge into the outer bearing channel (435); The inner hub (740) extends into the steel plate friction plate accommodating portion (730) to form a steel plate friction plate channel (760) for guiding the lubricating cooling oil in the outer bearing channel (435) into the steel plate friction plate accommodating portion (730).

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