CN213064612U

CN213064612U - Sealing steel sleeve for connecting brake outer hub and clutch piston support

Info

Publication number: CN213064612U
Application number: CN202021208528.5U
Authority: CN
Inventors: 王光博; 李娟娟; 刘彦军; 魏文书
Original assignee: Shengrui Transmission Co Ltd
Current assignee: Shengrui Transmission Co Ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-04-27
Anticipated expiration: 2030-06-24

Abstract

The utility model relates to an automatic gearbox technical field provides a sealed steel bushing for connecting brake outer hub and clutch piston support. This sealed steel bushing includes the steel bushing body, and the periphery of steel bushing body is equipped with annular oil groove, runs through on the steel bushing body and is equipped with oilhole and first pinhole, is equipped with the second pinhole on the outer hub of stopper, and the both sides of annular oil groove all are equipped with first annular mounting groove, and one side extension of steel bushing body is equipped with the sealing, and the periphery of sealing is equipped with second annular mounting groove, and one side of second annular mounting groove is equipped with a plurality of lubrication oil holes. The utility model discloses a be equipped with first pinhole on the sealing steel bushing, be equipped with the second pinhole on the stopper outer hub, the locating pin inserts first pinhole and second pinhole in proper order and accomplishes the location of sealing steel bushing, prevents that the steel bushing body from removing in the use, and the one end of steel bushing body is equipped with the sealing, seals lubricating oil through the sealing, prevents that lubricating oil is extravagant.

Description

Sealing steel sleeve for connecting brake outer hub and clutch piston support

Technical Field

The present disclosure relates to the field of automatic transmissions, and more particularly, to a sealing steel sleeve for connecting a brake outer hub and a clutch piston support.

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 the 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. The transmission relationship of each planetary transmission assembly is changed through the gear shifting unit, so that the automatic transmission outputs different rotating speeds. The clutch comprises a friction plate set and a piston device, and the friction plate set is pressed or loosened through the piston device so as to control the clutch to be closed or opened. The piston device comprises a piston support, a main piston and a balance piston, wherein the main piston and the balance piston are arranged on the piston support, the main piston slides relative to the piston support, and the balance piston is limited through a clamp spring.

Specifically, a main piston cavity is formed between the main piston and the piston support, and a balance piston cavity is formed between the main piston and the balance piston. Hydraulic oil flows to the piston support through an oil passage on the brake outer hub and enters the main piston cavity through the oil passage on the piston support. In addition, in order to prevent the leakage of the hydraulic oil, a sealing steel sleeve needs to be arranged between the piston support and the brake outer hub, so that the hydraulic oil completely flows to the main piston cavity, and the oil supply pressure is ensured.

In the prior art, a sealing sleeve is usually directly arranged on the periphery of an outer hub of a brake, and the position of the sealing steel sleeve is easy to move in the working process of a transmission, so that an oil hole in the sealing steel sleeve is staggered with an oil way in the outer hub of the brake, and the oil supply effect is influenced; and the sealing steel sleeve only can play the effect of preventing hydraulic oil from leaking, and the function is single, and the occupied space of the sealing steel sleeve cannot be utilized.

SUMMERY OF THE UTILITY MODEL

To solve the above technical problem or at least partially solve the above technical problem, the present disclosure provides a sealing steel sleeve for connecting a brake outer hub and a clutch piston support.

The invention provides a sealing steel sleeve for connecting a brake outer hub and a clutch piston support, which comprises a steel sleeve body arranged between the brake outer hub and the piston support, wherein an annular oil groove is arranged at the periphery of the steel sleeve body, an oil hole and a first pin hole are formed in the steel sleeve body in a penetrating manner, one end of the oil hole is communicated with an oil duct of the brake outer hub, the other end of the oil hole is communicated with the annular oil groove, a second pin hole is formed in the position, corresponding to the first pin hole, of the brake outer hub, a limiting hole for inserting a positioning pin is formed in the first pin hole and the second pin hole, first annular mounting grooves for mounting a first sealing element are formed in two sides of the annular oil groove, a sealing part is arranged at one end of the steel sleeve body in an extending manner, and a second annular mounting groove for mounting a second sealing element is formed in the periphery of the sealing part, and one side of the second annular mounting groove, which faces the steel sleeve body, is provided with a plurality of lubricating oil holes.

Optionally, the steel sleeve body and the sealing portion are connected through a transition section, and each lubricating oil hole is formed in the transition section.

Optionally, the lubricating oil holes are arranged at intervals along the circumferential direction of the transition section.

Optionally, one end of the steel sleeve body, which is far away from the sealing portion, is provided with a mounting hole, and the periphery of the brake outer hub is provided with an annular bulge matched with the mounting hole.

Optionally, the first pin hole and the second pin hole have the same diameter and the center lines thereof coincide with each other.

Optionally, the first pin hole and the second pin hole are both arranged along a radial direction of the steel sleeve body.

Optionally, the oil hole is provided along a radial direction of the steel sleeve body.

Optionally, the first pin hole is communicated with the annular oil groove.

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

the utility model discloses a be equipped with first pinhole on the sealing steel bushing, be equipped with the second pinhole on the stopper outer hub, the location of sealing steel bushing is accomplished to first pinhole and second pinhole in proper order to the locating pin, moreover, the steam generator is simple in structure, prevent that the steel bushing body from removing in the use, make the oil duct of oilhole and stopper communicate all the time, ensure that hydraulic oil lasts and provides, the one end of steel bushing body is equipped with the sealing part, through the sealing part sealing lubricating oil, prevent that lubricating oil is extravagant, the sealing steel bushing of this kind of design plays the effect of avoiding hydraulic oil and lubricating oil extravagant, its occupation space of rational utilization.

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 the sealing steel sleeve installed between the brake outer hub and the piston support according to the disclosed embodiment;

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

FIG. 3 is a schematic view of the sealing steel sleeve of the disclosed embodiment mounted on the outer periphery of the brake outer hub;

FIG. 4 is an enlarged view at B in FIG. 3;

FIG. 5 is a schematic structural diagram of a sealing steel sleeve according to an embodiment of the disclosure.

Wherein, 1, brake outer hub; 11. an annular projection; 2. a piston support; 21. a primary piston chamber; 22. an oil supply unit; 23. a lubricant oil passage; 24. a balance piston cavity; 3. a steel jacket body; 31. an annular oil groove; 32. an oil hole; 33. a first pin hole; 4. positioning pins; 5. a first seal member; 51. a first annular mounting groove; 6. a sealing part; 7. a second seal member; 71. a second annular mounting groove; 72. a lubricating oil hole; 8. a transition section; 9. a friction plate set.

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.

As shown in fig. 1, the sealing steel sleeve for connecting the brake outer hub and the clutch piston support provided in the embodiment of the present application includes a steel sleeve body 3 disposed between the brake outer hub 1 and the piston support 2, that is, the steel sleeve body 3 is disposed on the periphery of the brake outer hub 1, and the piston support 2 is disposed on the periphery of the steel sleeve body 3.

As shown in fig. 1 to 5, the outer periphery of the steel sleeve body 3 is provided with an annular oil groove 31, wherein the position of the annular oil groove 31 is opposite to the position of the oil passage of the piston support 2, so that the hydraulic oil in the annular oil groove 31 enters the main piston cavity 21 of the clutch through the oil passage. As shown in fig. 5, an oil hole 32 and a first pin hole 33 are formed through the steel sleeve body 3, one end of the oil hole 32 is used to communicate with an oil passage of the brake outer hub 1, and the other end communicates with the annular oil groove 31. Hydraulic oil enters the oil hole 32 through an oil passage arranged on the brake outer hub 1, then enters the annular oil groove 31 through the oil hole 32, and flows into the main piston cavity 21 through the oil passage on the piston support 2 after the annular oil groove 31 is filled with the hydraulic oil.

Referring to fig. 3 and 4, a second pin hole is formed in the brake outer hub 1 at a position corresponding to the first pin hole 33, and the first pin hole 33 and the second pin hole form a limiting hole into which the positioning pin 4 is inserted. The first pin hole 33 and the second pin hole have the same diameter and the center lines thereof coincide with each other, so that the positioning pin 4 can be smoothly inserted into the first pin hole 33 and the second pin hole. The both sides of annular oil groove 31 all are equipped with the first annular mounting groove 51 that is used for the dress to put first sealing member 5, and two first annular mounting grooves 51 all set up the periphery at steel bushing body 3 promptly. Referring to fig. 1 and 2, a first sealing element 5 is disposed in each first annular mounting groove 51, and the periphery of the first sealing element 5 extends out of the first annular mounting groove 51, so that the first sealing element 5 contacts the inner wall of the piston support 2, and hydraulic oil is prevented from flowing away through the joint of the steel jacket body 3 and the piston support 2.

As shown in fig. 1 and 2, an oil supply unit 22 is provided at one end of the piston support 2 close to the friction plate set 9 of the clutch, the oil supply unit 22 is supported at an end of the friction plate set 9, and the oil supply unit 22 is provided with a lubricating oil passage 23 for supplying lubricating oil to the friction plate set 9. The piston support 2 is provided with an oil passage communicating with the balance piston chamber 24 at a position close to the oil supply portion 22. As shown in fig. 3, 4 and 5, a sealing portion 6 extends from one end of the steel sleeve body 3, specifically, the sealing portion 6 is disposed at one end of the steel sleeve body 3 facing the friction plate set 9 of the clutch, and the sealing portion 6 extends into the oil supply portion 22 of the piston support 2. The outer circumference of the sealing portion 6 is provided with a second annular mounting groove 71 for housing the second sealing member 7 such that the second sealing member 7 is in contact with the inner wall of the oil supply portion 22 of the piston support 2.

As shown in fig. 5, the second annular mounting groove 71 is provided with a plurality of lubricating oil holes 72 on a side facing the steel sleeve body 3, the lubricating oil holes 72 being opposed to the positions of the lubricating oil passages 23 on the piston support 2 so that part of the lubricating oil enters the balance piston cavity 24 through the lubricating oil holes 72 and the lubricating oil passages 23. The other part of the lubricating oil flows to the friction plate group 9 through the lubricating oil channel 23 on the sealing part 6, and plays a role of lubricating the friction plate group 9. Wherein the second seal 7 can effectively prevent the lubricating oil from slipping through the gap between the oil supply portion 22 and the seal portion 6. Wherein, the first sealing element 5 and the second sealing element 7 are both rectangular sealing rings.

The utility model discloses a be equipped with first pinhole 33 on the sealing steel bushing, be equipped with the second pinhole on the stopper outer hub 1, the location of sealing steel bushing is accomplished in first pinhole 33 and second pinhole in proper order to locating pin 4, moreover, the steam generator is simple in structure, prevent that steel bushing body 3 from removing in the use, make the oil duct of oilhole 32 and stopper communicate all the time, ensure that hydraulic oil lasts and provides, the one end of steel bushing body 3 is equipped with sealing part 6, through sealing part 6 sealing lubricant, prevent that the lubricating oil is extravagant, this kind of design's sealing steel bushing plays the effect of avoiding hydraulic oil and lubricating oil waste, its occupation space of rational utilization.

As shown in fig. 4 and 5, the steel sleeve body 3 and the seal portion 6 are connected by a transition section 8, and the respective lubrication oil holes 72 are provided in the transition section 8. Further optimally, the individual lubrication holes 72 are spaced apart in the circumferential direction of the transition section 8. So that the lubricating oil fills the gap between the steel sleeve body 3 and the oil supply part 22 of the piston support 2 and then flows to the balance piston cavity 24 or provides lubrication for the friction plate set 9 respectively.

As shown in fig. 3, a mounting hole is formed at one end of the steel sleeve body 3 away from the sealing part 6, and an annular protrusion 11 matched with the mounting hole is formed on the periphery of the brake outer hub 1. Through setting up mounting hole and annular bulge 11, can effectively fix a position steel bushing body 3. In order to ensure that the oil hole 32 is opposite to the oil passage of the brake outer hub 1, a guide block is arranged on the periphery of the annular protrusion 11, and a guide groove is arranged at the corresponding position of the mounting hole, so that the installation position of the steel sleeve body 3 is ensured to be unique.

As shown in fig. 5, the first pin hole 33 and the second pin hole of the present disclosure are each disposed along the radial direction of the steel box body 3. And the oil holes 32 are provided along the radial direction of the steel sleeve body 3. Facilitating the machining of the first pin hole 33, the second pin hole, and the oil holes 32. And the first pin hole 33 is communicated with the annular oil groove 31, so that the processing difficulty of the first pin hole 33 is reduced, and meanwhile, the installation of the positioning pin 4 is facilitated.

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. The sealing steel sleeve for connecting the brake outer hub and the clutch piston support is characterized by comprising a steel sleeve body (3) arranged between the brake outer hub (1) and the piston support (2), wherein an annular oil groove (31) is formed in the periphery of the steel sleeve body (3), an oil hole (32) and a first pin hole (33) penetrate through the steel sleeve body (3), one end of the oil hole (32) is communicated with an oil channel of the brake outer hub (1), the other end of the oil hole is communicated with the annular oil groove (31), a second pin hole is formed in the position, corresponding to the first pin hole (33), of the brake outer hub (1), a limiting hole for inserting a positioning pin (4) is formed in the first pin hole (33) and the second pin hole, first annular mounting grooves (51) for mounting a first sealing element (5) are formed in two sides of the annular oil groove (31), the one end of steel bushing body (3) extends and is equipped with sealing portion (6), the periphery of sealing portion (6) is equipped with second annular mounting groove (71) that are used for putting second sealing member (7), second annular mounting groove (71) orientation one side of steel bushing body (3) is equipped with a plurality of lubrication oil holes (72).

2. The sealing steel sleeve for connecting a brake outer hub and a clutch piston support according to claim 1, characterized in that the steel sleeve body (3) and the sealing portion (6) are connected by a transition section (8), and each of the lubrication holes (72) is provided on the transition section (8).

3. The sealing steel sleeve for connecting a brake outer hub and a clutch piston support according to claim 2, characterized in that the respective lubrication holes (72) are provided at intervals in the circumferential direction of the transition section (8).

4. The sealing steel sleeve for connecting the brake outer hub and the clutch piston support according to claim 1, characterized in that one end of the steel sleeve body (3) away from the sealing part (6) is provided with a mounting hole, and the outer periphery of the brake outer hub (1) is provided with an annular protrusion (11) matched with the mounting hole.

5. The sealing steel sleeve for connecting a brake outer hub and a clutch piston support according to claim 1, characterized in that the first pin hole (33) and the second pin hole have the same diameter and the center lines coincide.

6. The sealing steel sleeve for connecting a brake outer hub and a clutch piston support according to claim 1, characterized in that the first pin hole (33) and the second pin hole are both provided along a radial direction of the steel sleeve body (3).

7. The sealing steel sleeve for connecting a brake outer hub and a clutch piston support according to claim 1, characterized in that the oil hole (32) is provided in a radial direction of the steel sleeve body (3).

8. The sealing steel sleeve for connecting a brake outer hub and a clutch piston support according to claim 1, characterized in that the first pin hole (33) communicates with the annular oil groove (31).