阅读说明：本技术 减速器、轮边驱动桥总成以及车辆 (Speed reducer, wheel-side drive axle assembly and vehicle ) 是由 彭旺 谢毅 徐兆峰 王冲 秦宬 于 2018-06-29 设计创作，主要内容包括：本发明公开了一种减速器、轮边驱动桥总成以及车辆,减速器包括第一壳体、第一阻油通气件以及第一泄压件,第一壳体具有容置第一传功机构的第一容纳腔以及与第一容纳腔互不连通的第二容纳腔,第一壳体上设置有第二通气孔,第二通气孔与第二容纳腔连通,第一阻油通气件位于第二容纳腔内,第一泄压件安装于第二通气孔上,并与第二通气孔连通,第一泄压件被构造成：在第二容纳腔内的压力超出预设值时泄压,第一阻油通气件被构造成：阻止润滑油溢出第一壳体,从而达到保护环境,提高润滑油利用率的目的,并使减速器的结构更加简单、降低了减速器的零部件的加工难度,使减速器的加工更加简单,从而降低减速器的生产成本。(The invention discloses a speed reducer, a wheel-side drive axle assembly and a vehicle, wherein the speed reducer comprises a first shell, a first oil blocking and air communicating piece and a first pressure relief piece, the first shell is provided with a first accommodating cavity for accommodating a first power transmission mechanism and a second accommodating cavity which is not communicated with the first accommodating cavity, a second air vent is arranged on the first shell, the second air vent is communicated with the second accommodating cavity, the first oil blocking and air communicating piece is positioned in the second accommodating cavity, the first pressure relief piece is arranged on the second air vent and is communicated with the second air vent, and the first pressure relief piece is constructed as follows: when the pressure in the second accommodating cavity exceeds a preset value, the pressure is released, and the first oil blocking and ventilation piece is configured to: the lubricating oil is prevented from overflowing the first shell, so that the purposes of protecting the environment and improving the utilization rate of the lubricating oil are achieved, the structure of the speed reducer is simpler, the processing difficulty of parts of the speed reducer is reduced, the processing of the speed reducer is simpler, and the production cost of the speed reducer is reduced.)

1. A speed reducer, comprising:

the first shell is provided with a first accommodating cavity for accommodating the first transmission mechanism and a second accommodating cavity which is not communicated with the first accommodating cavity, and a second vent hole is formed in the first shell and is communicated with the second accommodating cavity;

the first oil blocking and ventilation piece is positioned in the second accommodating cavity; and

a first relief mounted on and in communication with the second vent, the first relief configured to: when the pressure in the second accommodating cavity exceeds a preset value, the pressure is released, and the first oil blocking and ventilation piece is configured to: the lubricating oil is prevented from overflowing the first housing.

2. The speed reducer of claim 1, wherein the first oil blocking breather comprises: the oil blocking device comprises an oil blocking piece and a filter screen, wherein the oil blocking piece is sleeved on the filter screen.

3. A decelerator according to claim 2, wherein the oil blocking member is filter paper.

4. The speed reducer of claim 2, wherein the first oil blocking breather comprises:

the fixed shell is provided with a plurality of through holes, the oil blocking piece is arranged in the fixed shell, and the filter screen, the oil blocking piece and the fixed shell are sequentially sleeved from inside to outside;

the positioning end cover comprises a hollow cover body and an insertion flange connected to the hollow cover body, the insertion flange is inserted into the fixed shell at the end part of the fixed shell, and the oil blocking piece is clamped between the insertion flange and the fixed shell; and

the filter screen is clamped between the inserting flange and the positioning inner ring, and the inserting flange of the positioning end cover is limited in the axial direction by the oil blocking piece and the filter screen.

5. The speed reducer of claim 1, wherein the first pressure relief comprises: the air vent device comprises a breather pipe, a liner arranged above the breather pipe, an elastic piece arranged above the liner and a breather pipe cap which covers the liner and the elastic piece and is connected with the breather pipe, an air exhaust part is defined between the breather pipe cap and the breather pipe, and when the pressure of the second accommodating cavity exceeds a preset value, the liner opens an inner hole of the breather pipe so as to be communicated with the air exhaust part.

6. The speed reducer of claim 5, wherein the vent pipe comprises a main pipe section and a plug pipe section, the main pipe section and the plug pipe section are connected with each other, the outer wall of the main pipe section is provided with a first flange and a second flange, the plug pipe section is in threaded connection with the first vent hole, the first flange abuts against the first shell, the gasket is attached to the end of the second flange, the open end of the vent pipe cap contracts to form a contraction limiting part, and the contraction limiting part is located between the first flange and the second flange.

7. The decelerator according to claim 1, wherein the first housing has a mounting groove therein for mounting the first oil blocking vent, and the second vent communicates with the mounting groove.

8. A decelerator according to claim 7, wherein the first oil blocking and ventilation member is a hollow filter cartridge, and the first oil blocking and ventilation member is sleeved on a transmission shaft of the first transmission mechanism.

9. The reducer according to claim 8, wherein the first reducer includes a sealing member disposed between the first housing and the transmission shaft, the first receiving cavity and the second receiving cavity are spaced apart by the sealing member, and one end of the first oil blocking and ventilation member abuts against a side wall of the mounting groove and the other end abuts against the sealing member.

10. The speed reducer of claim 8, wherein an end of the first oil blocking breather toward the seal is a first end, and the second breather hole is disposed adjacent the first end.

11. A wheel-side drive axle assembly, characterized by comprising a first speed reducer according to any one of claims 1 to 10 and a second speed reducer having a second housing with a third accommodating chamber accommodating a second transmission mechanism, the third accommodating chamber being in communication with the second accommodating chamber, the second speed reducer being a planetary gear speed reducer.

12. The wheel axle assembly as defined in claim 11, wherein the first speed reducer further has a first vent hole communicating with the first accommodating chamber and a second relief member provided on the first vent hole.

13. A vehicle comprising a wheel-side axle assembly according to any one of claims 11-12.

Technical Field

The invention relates to the technical field of vehicles, in particular to a speed reducer, a wheel-side drive axle assembly and a vehicle.

Background

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the speed reducer which is simpler in structure on the premise of better oil resistance and pressure relief.

The invention also provides a wheel-side drive axle assembly which is provided with the speed reducer.

The invention further provides a vehicle with the wheel-side drive axle assembly.

A speed reducer according to an embodiment of a first aspect of the invention includes: the first casing has a first accommodating cavity for accommodating a first power transmission mechanism and a second accommodating cavity which is not communicated with the first accommodating cavity, the first casing is provided with a second vent hole communicated with the second accommodating cavity, the first oil blocking vent is located in the second accommodating cavity, the first pressure relief piece is mounted on the second vent hole and is communicated with the second vent hole, and the first pressure relief piece is constructed into: when the pressure in the second accommodating cavity exceeds a preset value, the pressure is relieved, and the first oil blocking and ventilation piece is configured to: the lubricating oil is prevented from overflowing the first housing.

According to the speed reducer provided by the embodiment of the invention, the pressure stability of the second accommodating cavity is maintained through the first pressure relief piece and the first oil blocking and ventilating piece, and the lubricating oil is prevented from overflowing out of the first shell through the second ventilating hole, so that the purposes of protecting the environment and improving the utilization rate of the lubricating oil are achieved, the structure of the speed reducer is simpler, the processing difficulty of parts of the speed reducer is reduced, the processing of the speed reducer is simpler, and the production cost of the speed reducer is reduced.

According to some embodiments of the invention, the first oil blocking vent comprises: the oil blocking device comprises an oil blocking piece and a filter screen, wherein the oil blocking piece is sleeved on the filter screen.

Further, the oil blocking piece is filter paper.

In some embodiments, the first oil blocking vent comprises: fixed casing, location end cover and location inner ring, fixed casing has a plurality of clearing holes, it locates to hinder oily piece in the fixed casing, the filter screen hinder oily piece fixed casing from inside to outside overlaps in proper order and establishes, the location end cover includes the cavity lid and connects grafting flange on the cavity lid, the grafting flange is in the tip of fixed casing inserts in the fixed casing, it presss from both sides to hinder oily piece peg graft flange with between the fixed casing, the filter screen presss from both sides grafting flange with between the location inner ring, the grafting flange of location end cover is right in the axial hinder oily piece with the filter screen forms spacingly.

According to some embodiments of the invention, the first pressure relief comprises: the air vent device comprises a breather pipe, a liner arranged above the breather pipe, an elastic piece arranged above the liner and a breather pipe cap which covers the liner and the elastic piece and is connected with the breather pipe, an air exhaust part is defined between the breather pipe cap and the breather pipe, and when the pressure of the second accommodating cavity exceeds a preset value, the liner opens an inner hole of the breather pipe so as to be communicated with the air exhaust part.

Further, the breather pipe comprises a main pipe section and an insertion pipe section which are connected with each other, the outer wall of the main pipe section is provided with a first flange and a second flange, the insertion pipe section is in threaded connection with the second breather hole, the first flange abuts against the first shell, the gasket is attached to the end part of the second flange, the opening end of the breather pipe cap shrinks to form a shrinkage limiting part, and the shrinkage limiting part is located between the first flange and the second flange.

Furthermore, the first shell is internally provided with a mounting groove for mounting the first oil blocking and ventilation piece, and the second ventilation hole is communicated with the mounting groove.

In some embodiments, the first oil blocking and ventilation member is a hollow filter cartridge, and the first oil blocking and ventilation member is sleeved on a transmission shaft of the first transmission mechanism.

Optionally, the speed reducer includes a sealing member, the sealing member is disposed between the first housing and the transmission shaft, the first accommodating cavity and the second accommodating cavity are spaced apart by the sealing member, and one end of the first oil blocking and ventilation member abuts against a side wall of the mounting groove and the other end abuts against the sealing member.

Further, one end of the first oil blocking and air passing member facing the sealing member is a first end, and the second air passing hole is arranged adjacent to the first end.

The wheel-side drive axle assembly according to the embodiment of the second aspect of the present invention includes a first speed reducer and a second speed reducer, the first speed reducer is the speed reducer described in the above embodiment, the second speed reducer has a second housing, the second housing has a third accommodating cavity accommodating a second transmission mechanism, the third accommodating cavity is communicated with the second accommodating cavity, and the second speed reducer is a planetary gear speed reducer. Further, the first speed reducer is also provided with a first vent hole communicated with the first accommodating cavity and a second pressure relief piece arranged on the first vent hole.

A vehicle according to an embodiment of the third aspect of the invention includes the wheel-side drive axle assembly as mentioned in the above-mentioned embodiment.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic cross-sectional view of a wheel-side drive axle assembly according to an embodiment of the present invention;

FIG. 2 is a schematic view of a first housing, a first pressure relief member, a first oil blocking vent and a driveshaft of a wheel-side drive axle assembly according to an embodiment of the present invention;

FIG. 3 is an enlarged partial schematic view of area A of FIG. 2;

FIG. 4 is an enlarged partial schematic view of region B of FIG. 2;

FIG. 5 is a schematic illustration of a first oil dam breather piece according to an embodiment of the present invention, disassembled;

FIG. 6 is a top view of a wheel-side axle assembly according to an embodiment of the present invention;

FIG. 7 is a schematic illustration of a first housing of a wheel-side axle assembly according to an embodiment of the present invention;

FIG. 8 is a schematic view of the first housing and motor mount of the wheel-side axle assembly according to an embodiment of the present invention.

Reference numerals:

wheel-side drive axle assembly 100, motor mount 200,

a first decelerator 10, a first housing 11, a second decelerator 20, a second housing 21,

a first oil blocking and ventilation piece 30, an oil blocking piece 31, a filter screen 32, a fixed shell 33, a positioning end cover 34, a hollow cover body 341, an inserting flange 342, a positioning inner ring 35,

a first pressure relief member 40, a vent pipe 41, a main pipe section 411, an insertion pipe section 412, a gasket 42, an elastic member 43, a vent pipe cap 44, a contraction limiting portion 441,

the transmission shaft 50, the sealing member 60, the oil storage pot 70, the second relief member 71,

the first air vent a, mounting groove b, first flange c, second flange d, through hole e, second air vent f, first chamber g that holds, the second holds chamber h, the third holds chamber i.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

A decelerator according to an embodiment of the present invention will be described with reference to fig. 1 to 8.

As shown in fig. 1, a reduction gear according to an embodiment of a first aspect of the present invention includes: the first housing 11 includes a first oil blocking vent 30 and a first pressure relief member 40.

Wherein, first casing 11 has the first chamber g that holds first drive mechanism of holding and holds the chamber h with the first second that holds chamber g and not communicate each other, is provided with second venthole f on first casing 11, and second venthole f holds chamber h with the second and communicates first oily breather piece 30 of hindering and be located the second and hold chamber h, and first pressure relief piece 40 is installed on second venthole f to communicate with second venthole f, first pressure relief piece 40 is constructed: when the pressure in the second accommodating chamber h exceeds a preset value, the first oil blocking and ventilation member 30 is configured to: the lubricating oil is prevented from overflowing the first housing 11.

According to the speed reducer of the embodiment of the invention, the pressure of the second accommodating cavity h is kept stable through the first pressure relief part 40 and the first oil blocking and ventilating part 30, and lubricating oil is prevented from overflowing out of the first shell 11 through the second ventilating hole f, so that the purposes of protecting the environment and improving the utilization rate of the lubricating oil are achieved, the structure of the speed reducer is simpler, the processing difficulty of parts of the speed reducer is reduced, the processing of the speed reducer is simpler, and the production cost of the speed reducer is reduced.

As shown in fig. 5, the first oil blocking breather 30 includes: the oil blocking member 31 and the filter screen 32, wherein the oil blocking member 31 is sleeved on the filter screen 32.

Specifically, the lubricating oil is separated from the air flow by the oil blocking member 31, the foreign matter in the second containing strength h is spaced apart from the oil blocking member 31 by the strainer 32, and the foreign matter is prevented from entering into the second ventilation hole f. Like this, not only can avoid impurity to enter into second through-hole f in, lead to second through-hole f to block up, can avoid the second to hold the impurity fish tail in the chamber h and hinder oily piece 31 moreover to the oily function that hinders that makes to hinder oily piece 31 can remain stable, thereby avoids lubricating oil to pass and is hindered oily piece 31 by the fish tail and spill over first casing 11, so that the first job stabilization nature who hinders oily through-piece 30 is higher.

Further, the oil blocking member 31 is filter paper. Thus, the lubricant is trapped by the filter paper and gas can pass through the filter paper, so that the first oil-blocking breather 30 has a better separation effect.

In the particular embodiment shown in fig. 5, the first oil blocking breather 30 includes: the oil filter comprises a fixed shell 33, a positioning end cover 34 and a positioning inner ring 35, wherein the fixed shell 33 is provided with a plurality of through holes e, an oil blocking piece 31 is arranged in the fixed shell 33, a filter screen 32, the oil blocking piece 31 and the fixed shell 33 are sequentially sleeved from inside to outside, the positioning end cover 34 comprises a hollow cover body 341 and an inserting flange 342 connected to the hollow cover body 341, the inserting flange 342 is inserted into the fixed shell 33 at the end part of the fixed shell 33, the oil blocking piece 31 is clamped between the inserting flange 342 and the fixed shell 33, the filter screen 32 is clamped between the inserting flange 342 and the positioning inner ring 35, and the inserting flange 342 of the positioning end cover 34 axially limits the oil blocking piece 31 and the filter screen 32.

Like this, install filter screen 32 and hinder oily piece 31 in fixed casing 33 to it is spacing to hinder oily piece 31 and filter screen 32 through location end cover 34 and location inner ring 35, not only make the first structure that hinders the piece 30 that leads to oil and intensity is higher, and the space occupies littleer, can avoid filter screen 32 and hinder oily piece 31 drunkenness in fixed casing 33, so that the job stabilization nature that the first piece 30 that leads to oil that hinders leads to is higher, and it is better to hinder oily effect.

As shown in fig. 4, the first pressure relief member 40 includes: the air vent pipe 41, the gasket 42 arranged above the air vent pipe 41, the elastic member 43 arranged above the gasket 42 and the air vent pipe cap 44 which covers the gasket 42 and the elastic member 43 and is connected with the air vent pipe 41, an air vent part is defined between the air vent pipe cap 44 and the air vent pipe 41, and the gasket 42 opens an inner hole of the air vent pipe 41 to be communicated with the air vent part when the pressure of the second accommodating cavity h exceeds a preset value.

Thus, by providing the first pressure relief member 40, the first pressure relief member 40 is opened when the pressure of the second accommodation chamber h exceeds a set value, and the first pressure relief member 40 is closed when the pressure of the second accommodation chamber h is lower than the set value, so that the internal pressure of the second accommodation chamber h can be maintained stably.

Further, the air discharge portion is formed between the breather pipe cap 44 and the breather pipe 41, so that it is possible to prevent dust and foreign substances from entering the first pressure relief member 40, to improve the operational stability of the first pressure relief member 40, and to extend the service life of the first pressure relief member 40.

As shown in fig. 5, the vent pipe 41 includes a main pipe section 411 and a plug pipe section 412 connected to each other, an outer wall of the main pipe section 411 has a first flange c and a second flange d, the plug pipe section 412 is screwed with the second vent hole f and the first flange c abuts against the first housing 11, the gasket 42 is attached to an end of the second flange d, an open end of the vent pipe cap 44 is contracted to form a contraction limiting portion 441, and the contraction limiting portion 441 is located between the first flange c and the second flange d.

That is, the vent pipe cap 44 may be inserted between the first flange c and the second flange d to cooperate with the second flange d, so that the vent pipe cap 44 is more stably fixed to the vent pipe 41, and abuts against the first housing 11 through the first flange c, so that the structural strength of the first pressure relief member 40 is higher, and at the same time, the insertion pipe section 412 is screwed into the second vent hole f and fastened by screwing, so that the connection between the first pressure relief member 40 and the first housing 11 is more firmly and reliably made.

In the specific embodiment shown in fig. 1, 2 and 3, the reducer further includes a sealing member 60, the sealing member 60 is disposed between the first housing 11 and the transmission shaft 50, the first receiving chamber g is separated from the second receiving chamber h by the sealing member 60, one end of the first oil blocking vent 30 abuts against the side wall of the mounting groove b, and the other end abuts against the sealing member 60.

That is, by providing the sealing member 60, the first receiving chamber g is spaced apart from the second receiving chamber h, and the first receiving chamber g is formed as a single closed space, and the second receiving chamber h is formed as a space that can be depressurized by the exhaust gas by the first relief member 40.

Like this, can prevent the lubricating oil drunkenness in the reduction gear to prevent that the lubricating oil in the reduction gear is less, lead to lubricated not enough, the lubricating oil high temperature in the reduction gear leads to reduction gear job stabilization nature to descend, thereby improves the job stabilization nature of reduction gear, and prevents that the reduction gear from breaking down, prolongs the life of reduction gear.

In the specific embodiment shown in fig. 2, the first housing 11 has a mounting groove b for mounting the first oil blocking and ventilation member 30 therein, and the second ventilation hole f communicates with the mounting groove b.

That is to say, the mounting groove b is the recess on the first casing 11a, and the both sides surface of mounting groove b forms respectively to the tang face, and sealing member 60 interference is installed in the tang face and is close to the one side that first holds chamber a, and first oil-blocking ventilation piece 30 is installed in mounting groove b to a side end face that first oil-blocking ventilation piece 30 stopped with a tang face of keeping away from first holding chamber a and is supported, and first oil-blocking ventilation piece 30's another side end face stopped with sealing member 60 to it provides spacingly for oil-blocking ventilation piece 31 to block through sealing member 60. Thus, the first oil blocking and ventilating member 30 is more easily installed in the first housing 11, and the first oil blocking and ventilating member 30 is more stably fixed to the first housing 11 by the sealing member 60, so that the first oil blocking and ventilating member 30 is prevented from shaking relative to the sealing member 60, and the first oil blocking and ventilating member 30 has higher working stability.

As shown in fig. 1 and 2, the first oil blocking and ventilation member 30 is a hollow filter cartridge, and the first oil blocking and ventilation member 30 is sleeved on the transmission shaft 50.

Therefore, on the one hand, the first oil blocking and air passing piece 30 formed as a hollow filter cylinder can prevent impurities in the second accommodating cavity h from entering the first air vent a on the premise of separating lubricating oil from air flow so as to prevent the first air vent a from being blocked, thereby effectively improving the working stability of the first pressure relief piece 40 and ensuring that the pressure control effect of the first pressure relief piece 40 on the second accommodating cavity h is better; on the other hand, the first oil blocking and ventilation member 30 externally sleeved on the transmission shaft 50 enables the lubricating oil splashed by the rotation of the transmission shaft 50 to be directly splashed into the first oil blocking and ventilation member 30, so as to prevent the lubricating oil from passing through the mounting groove b and directly entering the first vent hole a, and the effect of the first oil blocking and ventilation member 30 on preventing the lubricating oil from overflowing the first housing 11 is more stable.

Further, an end of the first oil blocking vent 30 facing the sealing member 60 is a first end, and the second vent hole f is disposed adjacent to the first end. Thus, the second ventilation hole f in the first housing 11 is more easily processed.

The wheel-side drive axle assembly according to the second aspect of the present invention includes a first speed reducer 10 and a second speed reducer 20, the first speed reducer 10 is the speed reducer in the above embodiments, the second speed reducer 20 has a second housing 21, the second housing 21 has a third accommodating chamber i accommodating the second transmission mechanism, the third accommodating chamber i is communicated with the second accommodating chamber h, and the second speed reducer 20 is a planetary gear speed reducer.

Specifically, the first accommodating cavity a and the second accommodating cavity h are not communicated with each other, the second accommodating cavity h and the third accommodating cavity i are communicated to form an inner cavity of the second speed reducer 20, the first pressure relief piece 40 is located on the second vent hole f, the first pressure relief piece 40 can be opened when the pressure of the inner cavity of the second speed reducer 20 exceeds a preset value and closed when the pressure of the inner cavity of the second speed reducer 20 is lower than the preset value, further, when the pressure of the inner cavity of the second speed reducer 20 exceeds the preset value, the first pressure relief piece 40 is opened, the oil-gas mixture in the inner cavity of the second speed reducer 20 flows towards the second vent hole f, and under the action of the first oil blocking vent piece 30, the air flow and the lubricating oil are separated, so that the lubricating oil is prevented from overflowing the first housing 11, and the air exhaust and pressure relief of the.

According to the wheel-side drive axle assembly 100 of the embodiment of the invention, the pressure of the inner cavity of the second speed reducer 20 is maintained to be stable through the first pressure relief part 40 and the first oil blocking and ventilation part 30, and the lubricating oil is prevented from overflowing the first shell 11, so that the purposes of protecting the environment and improving the utilization rate of the lubricating oil are achieved, the structure of the wheel-side drive axle assembly 100 is simpler, the processing difficulty of parts of the wheel-side drive axle assembly 100 is reduced, the processing of the wheel-side drive axle assembly 100 is simpler, and the production cost of the wheel-side drive axle assembly 100 is reduced.

It can be understood that the second accommodating cavity h is communicated with the third accommodating cavity i, and the third accommodating cavity i is used for accommodating the second transmission mechanism, so that the second accommodating cavity h is communicated with the third accommodating cavity i, lubricating oil in the third accommodating cavity i can flow into the second accommodating cavity h, and the exhaust and pressure relief of the third accommodating cavity i can be realized through the second accommodating cavity h. That is to say, hold chamber i and second through making the third and hold chamber h intercommunication to realize the exhaust pressure release of second reduction gear 20 through second ventilation hole f, and then second ventilation hole f sets up on first casing 11, need not to carry out structural improvement to second reduction gear 20, and the degree of difficulty of processing the air vent on first casing 11 is lower, can reduce the processing degree of difficulty of wheel-edge drive axle assembly 100 effectively.

It should be noted that the first speed reducer 10 is formed as a main speed reducer, and the second speed reducer 20 is formed as a planetary gear speed reducer, so that the first speed reducer 10 is fixed, and the second speed reducer 20 rotates, and further the second vent hole f for releasing the pressure of the second speed reducer 20 is provided on the first housing 11, and not only the second vent hole f is provided on the fixed first housing 11, so that the exhaust and pressure release effects of the second vent hole f can be more stable, but also the arrangement of the first pressure release member 40 and the first oil blocking and venting member 30 is more convenient and simpler.

Further, the first speed reducer 10 also has a first vent hole a communicating with the first housing chamber g, and a second pressure relief member 71 provided on the first vent hole a. Therefore, when the pressure in the first accommodating chamber g (i.e., the inner cavity of the first speed reducer 10) is too high, the second pressure relief member 71 is driven to open through the first vent hole a and the second pressure relief member 71, so that the pressure in the first accommodating chamber g is kept stable, and the working stability of the wheel-side drive axle assembly 100 is further improved.

It can be understood that the second pressure relief member 71 and the first pressure relief member 40 are configured in the same manner, and the opening pressures of the two are the same, so that the pressures in the first receiving cavity g and the second receiving cavity h can be kept the same, so that the pressures on both sides of the sealing member 60 are the same, and thus, the pressure on one side of the sealing member 60 is prevented from being too high, which causes the sealing member 60 to be pushed to move toward the side with lower pressure, thereby preventing the sealing member 60 from failing, and further improving the working stability of the wheel-side drive axle assembly 100.

Further, it is understood that, as shown in fig. 8, the second pressure relief member 71 is formed on the oil reservoir 70, and the oil reservoir 70 is mounted on the motor base 200 and communicates with the second venting hole f through a communication pipe, so that the second pressure relief member 71 located above the oil reservoir 70 is engaged through the oil reservoir 70 to perform venting pressure relief of the first receiving chamber a and prevent the lubricating oil from overflowing the first receiving chamber a. The vehicle according to the third aspect of the embodiment of the invention includes the wheel-side drive axle assembly 100 as mentioned in the above-mentioned embodiment.

According to the vehicle provided by the embodiment of the invention, not only is the working stability of the wheel-side drive axle assembly 100 higher, and the use safety of the vehicle can be improved, but also the production cost of the wheel-side drive axle 100 is lower, and the production cost of the vehicle can be effectively reduced.

The structure of the wheel-side transaxle assembly 100, and the exhaust and pressure relief processes of the first reduction gear 10 and the second reduction gear 20 will be described in detail below.

As shown in fig. 1, 6, 7, and 8, the wheel-side drive assembly 100 includes: the first speed reducer 10, the second speed reducer 20, the first oil blocking and ventilating member 30, the first pressure relief member 40, the transmission shaft 50, the sealing member 60 and the oil storage can 70.

Wherein, the one end of first casing 11 is connected and defines first chamber g of holding between the two with motor cabinet 200, and the other end of first casing 11 stretches into in the second casing 21 to and define the second between the second casing 21 and hold the chamber h, second casing 21 itself has the third and holds chamber i, and first chamber g that holds is separated from the second and holds chamber h through sealing member 60.

Therefore, a first vent hole a is formed in one side of the first housing 11 defining the first accommodating cavity g, a second vent hole f is formed in one side of the first housing 11 extending into the second housing 21, the first oil blocking vent 30 and the first pressure relief piece 40 are both arranged on the first housing 11, and the oil storage pot 70 is mounted on the motor base 200 and is communicated with the second vent hole f.

The exhaust and pressure relief process of the second reducer 20 (i.e., the planetary gear reducer) is as follows:

when the pressure that the chamber h was held to the second exceeded the setting value, first pressure relief spare 40 opened, the air current and the lubricating oil that the third held in the chamber i flow towards the second holds chamber h, set up and hold the oil through filter screen 32 in the first oily breather piece 30 of hindering of second breather hole f below with lubricating oil impurity, iron fillings etc. strain, hold lubricating oil through hindering oily piece 31 and hold back to make the air current flow to first pressure relief spare 40 through first oily breather piece 31 of hindering, thereby first pressure relief spare 40 is discharged the air current, in order to realize the exhaust pressure relief of second reduction gear 20.

The first retarder 10 (i.e., the final retarder) is vented as follows:

when the pressure of the first accommodating cavity g exceeds a set value, the second pressure relief piece 71 is opened, the air flow and the lubricating oil in the first accommodating cavity g circulate towards the first vent hole a, the lubricating oil is stored in the oil storage pot 70, and the air flow is exhausted through the second pressure relief piece 71, so that the air exhaust and pressure relief of the first speed reducer 10 are realized.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, but do not indicate or imply that the structures or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be considered as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.