CN111810616A

CN111810616A - Brake outer hub

Info

Publication number: CN111810616A
Application number: CN202010589796.4A
Authority: CN
Inventors: 范述鑫; 吴玉浩; 刘肖; 刘赛赛
Original assignee: Shengrui Transmission Co Ltd
Current assignee: Shengrui Transmission Co Ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2020-10-23

Abstract

The disclosure relates to the technical field of automatic transmissions and provides a brake outer hub. The brake outer hub comprises an outer hub body, wherein a plurality of oil passage channels are arranged on the outer hub body, a supporting plate is arranged on one side of the outer hub body, and a first mounting part is arranged on the outer hub body; the opposite side of outer hub body is equipped with the annular slab, and the inner wall of annular slab is equipped with interior draw-in groove and ring gear groove, and the middle part of outer hub body is equipped with the adapter sleeve, and the one end that the backup pad was kept away from to the adapter sleeve is equipped with the second installation department that is used for being connected with the stator shaft, is equipped with the oil pump cavity who is used for installing the oil pump on the outer hub body, and oil pump cavity and the coaxial setting of outer. The outer hub body that this disclosure provided is equipped with a plurality of oil ways way, can provide hydraulic oil for a plurality of parts, and the integration has the oil pump cavity on the outer hub body for the installation oil pump, stator shaft fix on the connecting sleeve, and friction disc group and ring gear are installed on the inner wall of annular plate, make a plurality of functions integrated in outer hub body, effectively utilize occupation space.

Description

Brake outer hub

Technical Field

The present disclosure relates to automatic transmissions, and more particularly to a brake outer hub.

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 shifted to be in a mess.

The automatic transmission comprises a shell, a plurality of planetary transmission assemblies and a plurality of shifting elements, wherein the plurality of planetary transmission assemblies and the plurality of shifting elements are arranged in the shell, the shifting elements comprise clutches and brakes, and the transmission relation among the different planetary transmission assemblies is controlled through opening and closing of the clutches and the brakes, so that the transmission ratio of the transmission is changed. The outer hub of the brake at the edge is connected with the inner wall of the shell, an oil supply pipeline is integrated on the outer hub of the brake and used for supplying oil to structures such as an input shaft and a corresponding clutch, an oil pump of the speed changer is installed on the outer hub, and the flywheel is directly driven by the hydraulic torque converter and provides hydraulic oil with certain pressure for the work of the hydraulic torque converter, the control system and the gear shifting execution mechanism. However, the integration level of the outer hub is poor, the functions of the outer hub are limited, and the inner space of the transmission cannot be well saved.

Disclosure of Invention

To solve the above technical problem or at least partially solve the above technical problem, the present disclosure provides a brake outer hub.

The invention provides a brake outer hub which comprises an outer hub body connected with the inner wall of a transmission shell, wherein a plurality of oil channels for flowing hydraulic oil are arranged on the outer hub body, a supporting plate used for sealing part of the oil channels is arranged on one side of the outer hub body, and a first mounting part used for being connected with the supporting plate is arranged on the outer hub body; the opposite side of outer hub body is equipped with the annular slab, the inner wall of annular slab is equipped with the ring gear groove that is used for installing the interior draw-in groove of friction disc group and is used for installing the planet row ring gear, the middle part of outer hub body is equipped with and supplies stator shaft male adapter sleeve, the adapter sleeve with the coaxial setting of outer hub body, the adapter sleeve is kept away from the one end of backup pad be equipped with be used for with the second installation department that the stator shaft is connected, be equipped with the oil pump cavity that is used for installing the oil pump on the outer hub body, the oil pump cavity with the coaxial setting of outer hub body.

Optionally, the first mounting portion includes a plurality of threaded holes disposed at a side where the outer hub body is connected to the support plate.

Optionally, the outer hub body is provided with a plurality of mounting pillars at intervals along a circumferential direction thereof, and each of the mounting pillars is provided with one of the threaded holes.

Optionally, a reinforcing rib is arranged between the mounting pillar and the outer hub body.

Optionally, one end of the connecting sleeve facing the support plate is provided with a thrust washer for supporting an input sprocket of the torque converter.

Optionally, one end of the connecting sleeve facing the supporting plate is provided with a plurality of mounting grooves, and the thrust washer is provided with mounting blocks at positions corresponding to the mounting grooves, and the mounting blocks are inserted into the mounting grooves.

Optionally, the second installation department is including setting up the adapter sleeve is kept away from annular hole on the inner wall of backup pad one end, annular hole's inner wall is equipped with a plurality of first fixture blocks along its circumference direction interval, the periphery of stator axle be equipped with annular hole assorted annular is protruding, annular bellied periphery is equipped with a plurality of second fixture blocks along its circumference direction interval, works as annular protruding support is in the step face of annular hole, each first fixture block with the second fixture block is crisscross each other.

Optionally, the inner wall of annular hole adopts aluminium system material, the second fixture block adopts aluminium system material, first fixture block by the extrusion of second fixture block the inner wall of annular hole forms.

Optionally, one of the oil passages is a lubricating oil passage of the starting clutch, the lubricating oil passage is arranged on one side, facing the supporting plate, of the outer hub body, and the supporting plate is used for sealing the lubricating oil passage.

Optionally, the lubricating oil way is semicircle form, the one end of lubricating oil way is equipped with the oil inlet, and the other end orientation the direction bending type of oil inlet forms pocket oil portion, the oil-out setting of lubricating oil way is in the tip of pocket oil portion, and works as when outer hub body is in operating position, the oil inlet is in the bottom of outer hub body, the oil-out is in the top of outer hub body, the inside of outer hub body be equipped with be used for with the branch oil passageway of oil-out intercommunication, divide the oil passageway be used for the orientation hydraulic oil is carried to the friction disc group of starting clutch.

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

the outer hub body that this disclosure provided is equipped with a plurality of oil ways way, can provide hydraulic oil for a plurality of parts, and the integration has the oil pump cavity on the outer hub body for the installation oil pump, stator shaft fix on the connecting sleeve, and friction disc group and ring gear are installed on the inner wall of annular plate, make a plurality of functions integrated in outer hub body, effectively utilize occupation space.

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 schematic view of an outer hub body according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a thrust washer disposed on a connecting sleeve of an outer hub body according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of the outer hub body on the side provided with the annular plate according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of the outer hub body coupled to a support plate according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of an outer hub body in an operating position according to an embodiment of the present disclosure.

10, an outer hub body; 20. an oil road channel; 21. a lubrication oil path; 22. an oil inlet; 23. an oil outlet; 24. an oil pocket part; 30. a support plate; 40. an annular plate; 41. an inner clamping groove; 42. a gear ring groove; 50. connecting sleeves; 51. mounting grooves; 52. an annular aperture; 60. an oil pump cavity; 70. a threaded hole; 71. mounting a support column; 72. reinforcing ribs; 80. a thrust washer; 81. and (7) installing the block.

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 to 5, the brake outer hub provided by the embodiment of the present application includes an outer hub body 10 for connecting with an inner wall of a transmission case, wherein the outer hub body 10 is fixedly disposed on the inner wall of the transmission case. Referring to fig. 1 and 2, a plurality of oil passages 20 are provided on the outer hub body 10, through which hydraulic oil can flow, and each oil passage 20 leads to different parts to supply hydraulic oil to each part. As shown in fig. 4, a support plate 30 for sealing a part of the oil passage 20 is provided at one side of the outer hub body 10, and a first mounting portion for connecting with the support plate 30 is provided at the outer hub body 10. Specifically, part of the oil passage 20 is opened on the side of the outer hub body 10 facing the support plate 30, and therefore, in order to prevent oil leakage, the support plate 30 is provided on the end surface of the outer hub body 10.

As shown in fig. 3, the other side of the outer hub body 10 is provided with an annular plate 40, and the annular plate 40 is coaxially disposed with the outer hub body 10. The inner wall of the annular plate 40 is provided with an internal bayonet slot 41 for mounting a friction disc pack and a ring gear slot 42 for mounting a planet row ring gear. Specifically, the inner wall of the annular plate 40 is provided with a plurality of clamping columns along the circumferential direction thereof, and each clamping column is arranged at intervals, so that an inner clamping groove 41 is formed between every two clamping columns, and the steel sheet of the friction sheet group is connected with the inner clamping groove 41. The ring gear of the planet row is installed on the inner wall of the ring gear groove 42, in addition, the ring gear groove 42 is arranged on one side, facing away from the supporting plate 30, of the inner clamping groove 41, and the inner space of the annular plate 40 is reasonably utilized by the design mode, so that the installation of the friction plate group and the ring gear of the planet row is convenient.

As shown in fig. 1, 2 and 3, a connecting sleeve 50 for inserting the stator shaft is disposed in the middle of the outer hub body 10, the connecting sleeve 50 is disposed coaxially with the outer hub body 10, a through hole for passing the stator shaft is disposed inside the connecting sleeve 50, and a second mounting portion for connecting the stator shaft is disposed at an end of the connecting sleeve 50 away from the supporting plate 30. Wherein, one end of the stator shaft is connected with the torque converter, and the other end is connected with the adapter sleeve 50, and the stator shaft is more common in the prior art, therefore, this disclosure does not make too much description to the stator shaft. Correspondingly, the supporting plate 30 is provided with a through hole, and the stator shaft is mounted on the connecting sleeve 50 through the supporting plate 30.

Be equipped with the oil pump cavity 60 that is used for installing the oil pump on the outer hub body 10, oil pump cavity 60 and the coaxial setting of outer hub body 10, the oil pump is installed in oil pump cavity 60, is equipped with hydraulic oil import and hydraulic oil export on the outer hub body 10, hydraulic oil import and hydraulic oil export respectively with the fluid import and the fluid export intercommunication of oil pump.

In some transmissions, the brake is connected to the piston device of the clutch, i.e., the piston device is disposed on the outer periphery of the annular plate 40 of the outer hub body 10, one of the oil passages 20 on the outer hub body 10 flows to the main piston cavity of the piston device, and one of the oil passages 20 flows to the balance piston cavity of the piston device, so that, in order to avoid leakage of hydraulic oil, a sealing steel sleeve is disposed between the outer ring of the annular plate 40 and the piston device. Specifically, the sealing steel sleeve is mounted on the annular plate 40 through bolts, so that the connection stability is improved, and the sealing steel sleeve is prevented from moving in the using process.

The outer hub body 10 provided by the disclosure is provided with the plurality of oil passage channels 20, hydraulic oil can be provided for a plurality of parts, the outer hub body 10 is integrated with the oil pump cavity 60 for installing an oil pump, the stator shaft is fixed on the connecting sleeve 50, and the friction plate group and the gear ring are installed on the inner wall of the annular plate 40, so that a plurality of functions are integrated on the outer hub body 10, and the occupied space is effectively utilized.

Referring to fig. 1 and 2, the first mounting portion includes a plurality of threaded holes 70 disposed at a side where the outer hub body 10 and the support plate 30 are connected, that is, through holes are disposed at positions of the support plate 30 corresponding to the respective threaded holes 70, and screws are screwed into the threaded holes 70 after passing through the through holes, so as to complete the connection between the outer hub body 10 and the support plate 30. Further preferably, the outer periphery of the outer hub body 10 is provided with a plurality of mounting pillars 71 at intervals along the circumferential direction thereof, and each mounting pillar 71 is provided with one screw hole 70. This kind of design makes the middle part fretwork of outer hub body 10, reduces outer hub body 10's volume, and then reduces outer hub body 10 and fill the inner space of the speed changer casing. Further optimally, reinforcing ribs 72 are arranged between the mounting pillars 71 and the outer hub body 10, and the strength of the mounting on the pillars can be effectively increased by arranging the reinforcing ribs 72.

As shown in fig. 4, the oil pump of the transmission is usually driven directly by the flywheel through the torque converter, that is, an oil pump sprocket is disposed on the rotating shaft of the oil pump, an input sprocket is disposed on the input shaft of the torque converter, the oil pump sprocket and the input sprocket are connected through a chain, and a notch through which the chain can pass is disposed on the support plate 30, so as to drive the oil pump to rotate through the torque converter. Wherein the input sprocket extends into the support plate 30 and the end of the input sprocket is supported on the outer hub body 10 for axial direction spacing. Therefore, as shown in fig. 2, in order to prevent friction between the input sprocket and the outer hub body 10, a thrust washer 80 for supporting the input sprocket of the torque converter is provided at an end of the connecting sleeve 50 facing the support plate 30.

Referring to fig. 1 and 2, the connecting sleeve 50 is provided with a plurality of mounting grooves 51 at one end facing the supporting plate 30, the thrust washer 80 is provided with mounting blocks 81 at positions corresponding to the mounting grooves 51, and the mounting blocks 81 are inserted into the mounting grooves 51 to limit the thrust washer 80, so that the connecting sleeve is simple in structure and convenient to disassemble and assemble.

As shown in fig. 3, the second mounting portion includes an annular hole 52 provided on an inner wall of the connecting sleeve 50 at an end thereof remote from the support plate 30, wherein the annular hole 52 has a diameter larger than that of the inner wall of the connecting sleeve 50. A plurality of first fixture blocks are arranged on the inner wall of the annular hole 52 at intervals along the circumferential direction of the inner wall, annular protrusions matched with the annular hole 52 are arranged on the periphery of the stator shaft, a plurality of second fixture blocks are arranged on the periphery of the annular protrusions at intervals along the circumferential direction of the annular hole 52, when the annular protrusions are supported on the end face of the annular hole 52, the first fixture blocks and the second fixture blocks are staggered with each other, and the rotation of the stator shaft is limited through the adjacent first fixture blocks and the second fixture blocks.

The inner wall of the annular hole 52 is made of aluminum, the second fixture block is made of aluminum, and the first fixture block is formed by extruding the inner wall of the annular hole 52 through the second fixture block. The inner wall of the annular hole 52 does not mean a thin wall, and the inner wall should have a certain thickness, that is, one side of the annular hole 52 close to the central axis is made of aluminum, so that the second fixture block can extrude the annular hole 52 to form the first fixture block. And the annular hole 52 is partially made of aluminum, so that the strength of the outer hub body 10 can be increased. Specifically, the outer diameter of the annular protrusion is close to the inner diameter of the annular hole 52, so that the annular protrusion can be inserted into the annular hole 52, and a certain gap is formed between the annular hole 52 and the annular protrusion, thereby facilitating the formation of the first fixture block.

Further optimally, the cross sections of the first fixture block and the second fixture block along the radial direction of the stator shaft are both in a conical shape, so that an inverted conical cavity is formed between the two adjacent second fixture blocks, and when the second fixture block extrudes the annular hole 52, the deformed part of the annular hole 52 extends along the side walls of the two adjacent second fixture blocks, so that the first fixture block is formed.

As shown in fig. 5, one of the oil passages 20 is a lubrication oil passage 21 of the starting clutch, the lubrication oil passage 21 is provided on a side of the outer hub body 10 facing the support plate 30, and the support plate 30 is used for sealing the lubrication oil passage 21. Specifically, the lubricating oil path 21 is semicircular, an oil inlet 22 is arranged at one end of the lubricating oil path 21, the other end of the lubricating oil path is bent towards the oil inlet 22 to form an oil pocket portion 24, an oil outlet 23 of the lubricating oil path 21 is arranged at the end portion of the oil pocket portion 24, when the outer hub body 10 is located at a working position, the oil inlet 22 is located at the bottom of the outer hub body 10, the oil outlet 23 is located at the top of the outer hub body 10, an oil distributing channel communicated with the oil outlet 23 is arranged inside the outer hub body 10, and the oil distributing channel is used for conveying hydraulic oil towards a friction plate set of the starting clutch. Wherein top and bottom are referred to herein as being proximate to the top and proximate to the bottom, respectively.

When the lubricating oil path 21 of this design is supplying oil, the hydraulic oil is communicated towards the oil outlet 23 through the oil inlet 22, and because the hydraulic oil itself has gravity, the hydraulic oil flows to the oil pocket 24 after filling the lubricating oil path 21. Due to the presence of the corners of the oil pocket 24, the hydraulic oil flows to the oil distribution passage under the influence of gravity. Correspondingly, the outlet of the oil distribution channel is arranged at the top of the friction plate set or close to the top of the friction plate set, so that the hydraulic oil flowing out of the oil distribution channel is filled in the friction plate set under the action of gravity, and the lubricating effect is improved. Meanwhile, due to the oil pocket portion 24, after the pressure of the hydraulic oil is relieved, the oil pocket portion 24 and the oil distribution channel store partial hydraulic oil to prepare for next lubrication, and the response speed is increased.

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 brake outer hub is characterized by comprising an outer hub body (10) connected with the inner wall of a transmission shell, wherein a plurality of oil passage channels (20) allowing hydraulic oil to flow are formed in the outer hub body (10), a supporting plate (30) used for sealing part of the oil passage channels (20) is arranged on one side of the outer hub body (10), and a first mounting part used for being connected with the supporting plate (30) is arranged on the outer hub body (10); the opposite side of outer hub body (10) is equipped with annular slab (40), the inner wall of annular slab (40) is equipped with interior draw-in groove (41) that are used for installing the friction disc group and is used for installing ring gear groove (42) of planet row ring gear, the middle part of outer hub body (10) is equipped with and supplies stator shaft male adapter sleeve (50), adapter sleeve (50) with outer hub body (10) coaxial setting, adapter sleeve (50) are kept away from the one end of backup pad (30) be equipped with be used for with the second installation department of stator shaft connection, be equipped with oil pump cavity (60) that are used for installing the oil pump on outer hub body (10), oil pump cavity (60) with outer hub body (10) coaxial setting.

2. The brake outer hub of claim 1, wherein the first mounting portion includes a plurality of threaded holes (70) disposed on a side of the outer hub body (10) to which the support plate (30) is connected.

3. A brake outer hub according to claim 2, wherein the outer periphery of the outer hub body (10) is provided with a plurality of mounting pillars (71) at intervals along the circumferential direction thereof, each of the mounting pillars (71) being provided with one of the threaded holes (70).

4. A brake outer hub according to claim 3, wherein a reinforcing rib (72) is provided between the mounting strut (71) and the outer hub body (10).

5. Brake outer hub according to claim 1, characterized in that the connecting sleeve (50) is provided at its end facing the support plate (30) with a thrust washer (80) for supporting an input sprocket of a hydrodynamic torque converter.

6. The brake outer hub according to claim 5, wherein the connecting sleeve (50) is provided with a plurality of mounting grooves (51) at one end facing the supporting plate (30), and the thrust washer (80) is provided with mounting blocks (81) at positions corresponding to the mounting grooves (51), the mounting blocks (81) being inserted into the mounting grooves (51).

7. The brake outer hub according to claim 1, wherein the second mounting portion includes an annular hole (52) formed in an inner wall of one end of the connecting sleeve (50) far away from the supporting plate (30), the inner wall of the annular hole (52) is provided with a plurality of first clamping blocks at intervals along a circumferential direction thereof, the outer periphery of the stator shaft is provided with an annular protrusion matched with the annular hole (52), the outer periphery of the annular protrusion is provided with a plurality of second clamping blocks at intervals along the circumferential direction thereof, and when the annular protrusion is supported on a step surface of the annular hole (52), the first clamping blocks and the second clamping blocks are staggered with each other.

8. The brake outer hub according to claim 7, wherein the inner wall of the annular hole (52) is made of aluminum, the second retainer is made of aluminum, and the first retainer is formed by pressing the inner wall of the annular hole (52) by the second retainer.

9. A brake outer hub according to claim 1, wherein one of the oil passage channels (20) is a starting clutch lubricating oil passage (21), the lubricating oil passage (21) is provided on a side of the outer hub body (10) facing the support plate (30), and the support plate (30) is used for sealing the lubricating oil passage (21).

10. The brake outer hub according to claim 9, wherein the lubricating oil path (21) is semicircular, one end of the lubricating oil path (21) is provided with an oil inlet (22), the other end of the lubricating oil path is bent towards the oil inlet (22) to form an oil pocket portion (24), an oil outlet (23) of the lubricating oil path (21) is arranged at the end of the oil pocket portion (24), when the outer hub body (10) is in the working position, the oil inlet (22) is located at the bottom of the outer hub body (10), the oil outlet (23) is located at the top of the outer hub body (10), an oil distribution channel for communicating with the oil outlet (23) is arranged inside the outer hub body (10), and the oil distribution channel is used for conveying hydraulic oil towards a friction plate set of the starting clutch.