CN212407378U

CN212407378U - Lubricating channel structure for starting clutch friction plate set

Info

Publication number: CN212407378U
Application number: CN202021208654.0U
Authority: CN
Inventors: 苏成云; 伊宝民; 万全喜; 李三帅
Original assignee: Shengrui Transmission Co Ltd
Current assignee: Shengrui Transmission Co Ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-01-26
Anticipated expiration: 2030-06-24

Abstract

The disclosure relates to the technical field of automatic transmissions, and provides a lubricating channel structure for a starting clutch friction plate set. The lubricating channel structure comprises a sealing steel sleeve, a sealing sleeve, a piston support and an inner hub, wherein the piston support is arranged on a support piece, and the sealing steel sleeve is arranged between the piston support and the support piece; an inner ring of the piston support is supported on the inner hub, and an oil groove is formed between the sealing steel sleeve and the end part of the inner hub; the inner wall of inner hub is equipped with the ring channel towards one side of sealed steel bushing, sealed steel bushing wipes and extends towards one side of friction disc group and is equipped with the supporting part, the periphery of supporting part is equipped with the seal cover, one side of seal cover supports the step face at inner hub, make and enclose into the lubricating oil passageway between the inner wall of seal cover and ring channel, the lubricating oil passageway communicates with the oil groove, be equipped with a plurality of oil ducts on the inner hub, the one end of each oil duct all communicates with the lubricating oil passageway, the other end is relative with each lubricated position of friction disc group respectively, be equipped with oil supply channel on the support piece, be equipped.

Description

Lubricating channel structure for starting clutch friction plate set

Technical Field

The disclosure relates to the technical field of automatic transmissions, in particular to a lubricating channel structure for a starting clutch friction plate set.

Background

An automotive transmission is a set of transmission devices for coordinating the rotational speed of an engine and the actual driving speed of wheels, and is used for exerting the best performance of the engine. The transmission can generate different gear ratios between an engine and wheels during the running process of the automobile, and the transmission of rotating speeds of different gears is realized.

The manual transmission mainly comprises gears and a rotating shaft, and the speed change and torque change are generated by different gear combinations; the automatic transmission AT consists of a hydraulic torque converter, a planetary gear and a hydraulic control system, and achieves speed and torque changing through a hydraulic transmission and gear combination mode.

Among them, the automatic transmission has advantages of comfortable driving, reducing fatigue of driver, etc., and has become a development direction of modern car configuration. The automatic transmission utilizes a planetary gear mechanism to change speed, can automatically change speed according to the degree of an accelerator pedal and the change of vehicle speed, and a driver only needs to operate the accelerator pedal to control the vehicle speed, so that the driver can watch road traffic with full attention without being confused by gear shifting.

The automatic transmission includes a plurality of planetary gear assemblies and a plurality of shift elements, wherein the shift elements include clutches and brakes. For a hybrid transmission, one of the clutches is a launch clutch for launching the vehicle. When the starting clutch works, friction between the friction plate and the steel sheet is fast, so that the friction plate set of the starting clutch is fast heated, and the heat of the friction plate set is large, so that more lubricating oil needs to be introduced towards the friction plate set. However, since the starting clutch is usually disposed close to the inner wall of the transmission housing, the oil passage on the drive shaft of the transmission cannot provide lubrication for the friction plate set of the starting clutch. In the prior art, hydraulic oil needs to enter a balance piston oil cavity of a starting clutch, when the balance piston oil cavity is filled, part of the hydraulic oil enters a friction plate set oil cavity, the hydraulic oil is not filled in time, the temperature of a friction plate rises, and most of the hydraulic oil flows away through gaps in an automatic transmission, so that the hydraulic oil is wasted.

SUMMERY OF THE UTILITY MODEL

To address the above technical problems or at least partially solve the above technical problems, the present disclosure provides a lubrication channel structure for a starting clutch disc set.

The invention provides a lubricating channel structure for a starting clutch friction plate set, wherein a starting clutch comprises a piston device and a friction device, the piston device comprises a piston support, a main piston, a balance piston and a resetting piece, the piston support is arranged on a supporting piece, and a sealing steel sleeve is arranged between the piston support and the supporting piece;

the friction device comprises a friction plate group, an inner hub and an outer hub are respectively arranged on an inner ring and an outer ring of the friction plate group, an inner ring of the piston support is supported on the inner hub, and the sealing steel sleeve and the end part of the inner hub are arranged at intervals, so that an oil groove is formed between the inner hub and the sealing steel sleeve;

the inner wall of interior hub orientation one side of sealed steel bushing is equipped with the ring channel, sealed steel bushing orientation one side extension of friction disc group is equipped with the supporting part, the supporting part stretches into the inboard of ring channel, the periphery of supporting part is equipped with the seal cover, the seal cover is kept away from one side of sealed steel bushing supports the step face of interior hub, makes the seal cover with enclose into the lubricating oil passageway between the inner wall of ring channel, the lubricating oil passageway with the oil groove intercommunication, be equipped with a plurality of oil ducts on the interior hub, each the one end of oil duct all with the lubricating oil passageway intercommunication, the other end respectively with each lubricated position of friction disc group is relative, be equipped with fuel feeding channel on the support piece, be equipped with on the sealed steel bushing and be used for the intercommunication fuel feeding channel with the fuel feeding mouth of oil groove.

Optionally, a transition section is arranged on the inner wall of the sealing steel sleeve close to one side of the friction plate group, the end part of the transition section faces the direction of the friction plate group and is provided with the supporting part, and the oil supply port is arranged on the transition section.

Optionally, a first sealing element is arranged between the periphery of the supporting portion and the inner wall of the sealing sleeve, and a first annular clamping groove for mounting the first sealing element is formed in the periphery of the supporting portion.

Optionally, the periphery of one side of the inner hub facing the sealing steel sleeve is provided with a limiting groove, the inner ring of the piston support extends out of the sealing steel sleeve in the direction facing the friction plate group, and the extending end of the inner ring of the piston support is provided with a limiting plate matched with the limiting groove.

Optionally, a second sealing element is arranged between the piston support and the sealing steel sleeve, and a second annular clamping groove for mounting the second sealing element is formed in the sealing steel sleeve.

Optionally, the oil passages include a plurality of first oil passages and a plurality of second oil passages, the first oil passages are disposed on one side of the second oil passage close to the piston support, each of the first oil passages is disposed along a radial direction of the inner hub, the second oil passages are inclined toward a direction away from the piston support, and oil outlet ends of the first oil passages and the second oil passages correspond to lubrication positions of the friction plate set.

Optionally, the diameter of the second oil path is larger than that of the first oil path.

Optionally, the oil inlet end of the second oil path is arranged at a corner of the annular groove.

Optionally, a mounting hole is formed in the step surface of the annular groove, and the end of the sealing sleeve is matched with the mounting hole.

Optionally, the sealing sleeve includes a first sleeve for connecting with the support portion and a second sleeve disposed on a side of the first sleeve away from the piston support, a diameter of the second sleeve is smaller than a diameter of the first sleeve, an end of the second sleeve is supported on a step surface of the annular groove, and an oil inlet end of each oil passage is disposed opposite to the second sleeve.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

the sealing steel sleeve and the end part of the inner hub are arranged at intervals to form an oil groove, the oil groove is sealed through the inner wall of the piston support and the periphery of the support part, and lubricating oil enters the oil groove through the oil supply port; the end part of the sealing steel sleeve is provided with a supporting part, the periphery of the supporting part is provided with a sealing sleeve, a lubricating oil channel is formed between the sealing sleeve and the inner wall of the inner hub, lubricating oil enters the lubricating oil channel through an oil groove and then flows to the lubricating position of the friction plate group through each oil channel, the structural design is ingenious, the oil groove and the lubricating oil channel are both designed in a closed mode, and the waste of the lubricating oil is avoided; lubricating oil directly flows to the friction plate group through the oil groove and the lubricating oil channel, so that the supplementing efficiency of the lubricating oil is increased, the friction plate group is ensured to be cooled in time, and each oil channel corresponds to each lubricating position respectively, so that each friction plate can be rapidly filled with the lubricating oil, and the cooling and lubricating effects of the friction plate group are further increased.

Drawings

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 disclosure.

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a cross-sectional view of a launch clutch arrangement according to an embodiment of the present disclosure;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is a cross-sectional view of the arrangement of the sealing steel sleeve and the inner hub according to the disclosed embodiment;

fig. 4 is an enlarged view at B in fig. 3.

10, a piston device; 11. a piston support; 111. a limiting plate; 12. a primary piston; 13. A balance piston; 14. a reset member; 20. a friction device; 21. a friction plate set; 22. an inner hub; 221. a first oil passage; 222. a second oil passage; 30. a support member; 31. an oil supply passage; 40. sealing the steel sleeve; 41. a transition section; 50. an oil sump; 51. a lubricant oil passage; 52. an oil supply port; 60. a support portion; 70. sealing sleeves; 71. a first sleeve; 72. a second sleeve; 80. a first seal member; 81. a second seal.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

Referring to fig. 1 and 2, the embodiment of the present application provides a lubrication channel structure for a starting clutch friction plate set, where the starting clutch includes a piston device 10 and a friction device 20, the piston device 10 includes a piston support 11, a main piston 12, a balance piston 13, and a reset piece 14, the piston support 11 is disposed on a support piece 30, and a sealing steel sleeve 40 is disposed between the piston support 11 and the support piece 30.

Specifically, as shown in fig. 2, the side of the piston support 11 facing the friction device 20 is provided with an annular mounting groove, and the main piston 12, the balance piston 13, and the restoring member 14 are all disposed in the annular mounting groove. A main piston cavity is formed between the main piston 12 and the inner wall of the annular mounting groove, a balance piston cavity is formed between the main piston 12 and the balance piston 13, and a resetting piece 14 is arranged in the balance piston cavity and used for applying force to the main piston 12 in the direction away from the friction device 20. Wherein, balance piston 13 sets up in main piston 12 towards the one side of friction disc group 21, and balance piston 13's inner circle supports in main piston 12's periphery to with main piston 12 sliding fit, balance piston 13's outer lane supports on the inner wall of annular mounting groove, and with the spacing cooperation of annular mounting groove. The inner ring and the outer ring of the main piston 12 are in sliding fit with the inner wall of the annular mounting groove, the inner ring of the main piston 12 extends out of the balance piston 13 towards the friction device 20, and the extending end of the inner ring of the main piston 12 is supported on the side surface of the friction plate group 21 of the piston device 10. The return member 14 includes a return spring disposed between the main piston 12 and the balance piston 13.

During the use, all let in hydraulic oil in main piston chamber and the balanced piston chamber, the hydraulic oil of balanced piston intracavity plays balanced main piston 12's effect, and the hydraulic oil in the main piston intracavity promotes main piston 12 and moves towards friction device 20's direction, and then makes friction device 20 close. When the hydraulic oil in the main piston chamber is relieved, the return spring pushes the main piston 12 to move towards the direction away from the friction device 20, so that the friction device 20 is opened. Correspondingly, the piston support 11 is provided with a first oil hole for hydraulic oil to enter the main piston cavity. The main piston 12 is provided with a second oil hole for hydraulic oil to enter the balance piston cavity, and the piston support 11 is provided with a third oil hole for communicating with the second oil hole. The support member 30 is provided with hydraulic oil passages for introducing hydraulic oil toward the first oil hole and the third oil hole, respectively.

Wherein the support member 30 generally refers to a member for mounting the piston support 11, the specific structure of which is selected according to specific design requirements. In some transmissions, the support 30 is a brake outer hub, i.e. the piston support 11 is mounted on the outer periphery of the brake outer hub, with a sealing steel sleeve 40 disposed between the brake outer hub and the piston support 11.

As shown in connection with fig. 1 to 4, friction device 20 comprises a friction pack 21, and an inner ring and an outer ring of friction pack 21 are provided with an inner hub 22 and an outer hub, respectively, wherein the present application mainly protects the lubrication oil passage structure, while the outer hub is not concerned, and therefore, the outer hub is not shown in the figures. The inner race of the piston support 11 is supported on the inner hub 22, and the sealing steel sleeve 40 is spaced from the end of the inner hub 22 such that an oil groove 50 is formed between the inner hub 22 and the sealing steel sleeve 40. Specifically, the periphery of one side of the inner hub 22 facing the sealing steel sleeve 40 is provided with a limiting groove, the inner ring of the piston support 11 extends out of the sealing steel sleeve 40 towards the friction plate group 21, and the extending end of the inner ring of the piston support 11 is provided with a limiting plate 111 matched with the limiting groove. The matching here means that the depth of the limiting groove is the same as the width of the annular plate, and after the annular plate is installed in the limiting groove, the annular plate is in interference fit with the inner hub 22. The inner ring of the piston support 11 is connected with the inner hub 22 so that the inner wall of the piston support 11 seals the oil groove 50 to prevent leakage of the lubricating oil.

As shown in fig. 2 and 4, the inner wall of the inner hub 22 is provided with an annular groove on the side facing the sealing steel sleeve 40, wherein the length of the annular groove along the axial direction thereof is designed to meet the design requirement. One side of the sealing steel sleeve 40 facing the friction plate group 21 is extended to be provided with a supporting portion 60, the supporting portion 60 extends into the inner side of the annular groove, a sealing sleeve 70 is arranged on the periphery of the supporting portion 60, one side of the sealing sleeve 70 far away from the sealing steel sleeve 40 is supported on the step surface of the inner hub 22, the sealing sleeve 70 and the inner wall of the inner hub 22 are arranged at intervals, so that a lubricating oil channel 21 is enclosed between the sealing sleeve 70 and the inner wall of the annular groove, the lubricating oil channel 21 is communicated with the oil groove 50, the inner hub 22 is provided with a plurality of oil channels, one end of each oil channel is communicated with the lubricating oil channel 21, the other end of each oil channel is opposite to each lubricating position of the friction plate group 21, the supporting member 30 is provided with. The lubrication position refers to the position between two adjacent friction plates, so that each friction plate is independently supplied with oil.

As shown in fig. 3 and 4, the sealing steel sleeve 40 of the present disclosure is spaced apart from the end of the inner hub 22, and forms an oil groove 50, the oil groove 50 is sealed by the inner wall of the piston support 11 and the outer circumference of the support portion 60, and the lubricating oil enters the oil groove 50 through an oil supply port 52; the end part of the sealing steel sleeve 40 is provided with a supporting part 60, the periphery of the supporting part 60 is provided with a sealing sleeve 70, a lubricating oil channel 21 is formed between the sealing sleeve 70 and the inner wall of the inner hub 22, lubricating oil enters the lubricating oil channel 21 through an oil groove 50 and then flows to the lubricating position of the friction plate group 21 through each oil channel, the structural design is ingenious, the oil groove 50 and the lubricating oil channel 21 are both designed in a closed mode, and the waste of the lubricating oil is avoided; lubricating oil directly flows to the friction plate group 21 through the oil groove 50 and the lubricating oil channel 21, so that the supplementing efficiency of the lubricating oil is increased, the friction plate group 21 is ensured to be cooled in time, and each oil channel corresponds to each lubricating position respectively, so that each friction plate can be rapidly filled with the lubricating oil, and the cooling and lubricating effects of the friction plate group 21 are further improved.

The inner wall of the sealing steel sleeve 40 close to one side of the friction plate group 21 is provided with a transition section 41, the end part of the transition section 41 faces the direction of the friction plate group 21 and is provided with a support part 60, and the oil supply port 52 is arranged on the transition section 41. By providing the transition section 41 to support the support portion 60 inside the inner hub 22, space usage is reduced.

A first sealing element 80 is arranged between the periphery of the supporting part 60 and the inner wall of the sealing sleeve 70, and a first annular clamping groove for mounting the first sealing element 80 is arranged on the periphery of the supporting part 60. A second sealing element 81 is arranged between the piston support 11 and the sealing steel sleeve 40, and a second annular clamping groove for mounting the second sealing element 81 is arranged on the sealing steel sleeve 40. By providing the first seal 80 and the second seal 81 to seal the respective connection positions, the leakage of the lubricating oil is prevented.

The oil passages include a plurality of first oil passages 221 and a plurality of second oil passages 222, the first oil passages 221 are arranged on one side, close to the piston support 11, of the second oil passages 222, each first oil passage 221 is arranged along the radial direction of the inner hub 22, the second oil passages 222 are inclined towards the direction far away from the piston support 11, and oil outlet ends of the first oil passages 221 and the second oil passages 222 correspond to the lubricating positions of the friction plate groups 21. The oil passages are arranged in a plurality of ways, so that the different first oil passages 221 and second oil passages 222 are filled with lubricating oil towards the corresponding lubricating positions, the oil is supplied to each friction plate independently, and the cooling and lubricating efficiency is improved. Preferably, the diameter of second oil path 222 is larger than that of first oil path 221, so as to increase the amount of lubricating oil flowing out through second oil path 222, and ensure that the requirement of friction plate group 21 is met. Further optimally, the oil inlet end of the second oil path 222 is arranged at the corner of the annular groove, and the occupation of the space is effectively reduced.

As shown in fig. 4, the step surface of the annular groove is provided with a mounting hole, the end of the sealing sleeve 70 is matched with the mounting hole, and the end of the sealing sleeve 70 is mounted in the mounting hole, so that the positioning effect is improved.

The seal sleeve 70 comprises a first sleeve 71 used for being connected with the supporting part 60 and a second sleeve 72 arranged on one side of the first sleeve 71 far away from the piston support 11, the diameter of the second sleeve 72 is smaller than that of the first sleeve 71, the end part of the second sleeve 72 is supported on the step surface of the annular groove, and the oil inlet end of each oil passage is arranged opposite to the second sleeve 72. This kind of design makes and forms the ladder face between first sleeve 71 and the second sleeve 72, and lubricating oil flows to second sleeve 72 through the periphery of first sleeve 71 to pile up in the periphery of second sleeve 72, pile up after certain degree when lubricating oil, flow to friction plate group 21 through first oil circuit 221 and second oil circuit 222, increase the stability of fuel feeding, ensure that the fuel feeding effect of each position of friction plate group 21 is the same. Further optimally, the first oil hole and the second oil hole are both arranged on the outer teeth of the inner hub 22, and the lubricating oil can lubricate the friction plate after flowing out in the design mode, so that the cooling efficiency and the lubricating efficiency are improved.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lubrication channel structure for a starting clutch friction plate set is characterized in that a starting clutch comprises a piston device (10) and a friction device (20), the piston device (10) comprises a piston support (11), a main piston (12), a balance piston (13) and a reset piece (14), the piston support (11) is arranged on a support piece (30), and a sealing steel sleeve (40) is arranged between the piston support (11) and the support piece (30);

the friction device (20) comprises a friction plate group (21), an inner hub (22) and an outer hub are respectively arranged on the inner ring and the outer ring of the friction plate group (21), the inner ring of the piston support (11) is supported on the inner hub (22), and the sealing steel sleeve (40) and the end part of the inner hub (22) are arranged at intervals, so that an oil groove (50) is formed between the inner hub (22) and the sealing steel sleeve (40);

the inner wall of interior hub (22) orientation one side of sealing steel bushing (40) is equipped with the ring channel, sealing steel bushing (40) orientation one side extension of friction disc group (21) is equipped with supporting part (60), supporting part (60) stretch into the inboard of ring channel, the periphery of supporting part (60) is equipped with seal cover (70), seal cover (70) are kept away from one side of sealing steel bushing (40) is supported the step face of interior hub (22) for seal cover (70) with enclose into lubricating oil passageway (51) between the inner wall of ring channel, lubricating oil passageway (51) with oil groove (50) intercommunication, be equipped with a plurality of oil ducts on interior hub (22), each the one end of oil duct all with lubricating oil passageway (51) intercommunication, the other end respectively with each lubricated position of friction disc group (21) is relative, the supporting piece (30) is provided with an oil supply channel (31), and the sealing steel sleeve (40) is provided with an oil supply port (52) which is used for communicating the oil supply channel (31) with the oil groove (50).

2. The lubrication channel structure for a starting clutch friction plate set according to claim 1, characterized in that a transition section (41) is arranged on the inner wall of the sealing steel sleeve (40) close to one side of the friction plate set (21), the end part of the transition section (41) is provided with the support part (60) towards the direction of the friction plate set (21), and the oil supply port (52) is arranged on the transition section (41).

3. The lubrication channel structure for a starting clutch disc set according to claim 1, characterized in that a first seal (80) is arranged between the outer periphery of the support (60) and the inner wall of the sealing sleeve (70), and a first annular clamping groove for mounting the first seal (80) is arranged on the outer periphery of the support (60).

4. The lubrication channel structure for the starting clutch friction plate set according to claim 1, characterized in that the periphery of one side of the inner hub (22) facing the sealing steel sleeve (40) is provided with a limiting groove, the inner ring of the piston support (11) extends out of the sealing steel sleeve (40) in the direction of the friction plate set (21), and the extending end of the inner ring of the piston support (11) is provided with a limiting plate (111) matched with the limiting groove.

5. The lubrication channel structure for a starting clutch friction plate set according to claim 1, characterized in that a second sealing member (81) is arranged between the piston support (11) and the sealing steel sleeve (40), and a second annular clamping groove for mounting the second sealing member (81) is arranged on the sealing steel sleeve (40).

6. The lubrication passage structure for a starting clutch disc set according to claim 1, wherein the oil passage includes a plurality of first oil passages (221) and second oil passages (222), the first oil passages (221) are provided on a side of the second oil passages (222) close to the piston support (11), each of the first oil passages (221) is provided along a radial direction of the inner hub (22), the second oil passages (222) are inclined toward a direction away from the piston support (11), and oil outlet ends of the first oil passages (221) and the second oil passages (222) correspond to a lubrication position of the disc set (21).

7. The lubrication channel structure for a starting clutch disc set according to claim 6, characterized in that the diameter of the second oil passage (222) is larger than the diameter of the first oil passage (221).

8. The lubrication channel structure for a starting clutch disc set according to claim 6, characterized in that an oil inlet end of the second oil passage (222) is provided at a corner of the annular groove.

9. The lubrication channel structure for a starting clutch disc set according to claim 1, characterized in that the step surface of the annular groove is provided with a mounting hole, and the end of the sealing sleeve (70) is matched with the mounting hole.

10. The lubrication channel structure for a starting clutch disc set according to claim 1, wherein the seal sleeve (70) comprises a first sleeve (71) for connection with the support portion (60) and a second sleeve (72) disposed on a side of the first sleeve (71) remote from the piston support (11), the diameter of the second sleeve (72) is smaller than that of the first sleeve (71), an end portion of the second sleeve (72) is supported on a step surface of the annular groove, and an oil inlet end of each oil passage is disposed opposite to the second sleeve (72).