CN211599491U

CN211599491U - Transmission and exhaust assembly thereof

Info

Publication number: CN211599491U
Application number: CN202020123859.2U
Authority: CN
Inventors: 董野
Original assignee: Zyefu Transmission Technology Suzhou Co ltd
Current assignee: Zyefu Transmission Technology Suzhou Co ltd; ZF Drivetech Suzhou Co Ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-09-29
Anticipated expiration: 2030-01-19

Abstract

The utility model discloses a transmission and exhaust subassembly thereof. The exhaust assembly of the transmission includes: a connecting tube having opposite upper and lower ends, the lower end of the connecting tube for mounting on a housing of a transmission; a hose having opposite upper and lower ends, the lower end of the hose being connected to the upper end of the connecting tube; and the vent plug is connected with the upper end of the hose and communicated with the inside of the shell of the transmission device through the connecting pipe and the hose. In the exhaust assembly, the vent plug is arranged on the shell of the transmission device through the hose and the connecting pipe, the hose reduces the influence of the vibration of the transmission device on the vent plug, and the joint of the exhaust assembly and the transmission device is not easy to generate pores or gaps, so that the waterproof grade of the exhaust assembly is improved, and the IP 68-grade waterproof requirement is met; in addition, the hose and the connection pipe extend an exhaust path of the expanded air in the transmission, and can prevent or reduce leakage of the lubricating oil in the transmission.

Description

Transmission and exhaust assembly thereof

Technical Field

The utility model relates to an automobile parts technical field especially relates to a transmission and exhaust subassembly thereof.

Background

A transmission, such as a transmission or reduction gearbox, is the mechanism used to vary the speed and torque from the engine. During the operation of the transmission, the gears transmit energy through meshing rotation and are lubricated by lubricating oil. The gears rub against each other when engaged and rotate to generate heat, so that the temperature in the transmission device rises, the internal air expands, and part of lubricating oil attached to the gears is atomized along with the rise of the temperature to form oil mist. A breather plug is typically provided in the transmission to release the expanding air after the temperature inside the transmission rises to avoid internal high pressure causing failure of the oil seal. The existing breather plug is a mechanical breather plug which is generally directly installed on a transmission device, a waterproof design is not provided, when the breather plug runs for a long time, the vibration of the transmission device can affect the connection between the breather plug and the transmission device, a hole or a gap can be generated at the joint, the waterproof requirement of IP68 level can not be met, the performance of the transmission device can be affected after outside water permeates into the transmission device, in addition, partial oil mist of lubricating oil can leak out of the mechanical breather plug, the oil quantity of the lubricating oil in the transmission device is reduced, and the lubricating effect is affected.

Disclosure of Invention

The utility model provides a transmission and exhaust assembly thereof to solve the problem that the oil mist of the waterproof and lubricating oil of current breather plug leaked.

An exhaust assembly for a transmission, comprising:

a connecting tube having opposite upper and lower ends, the lower end of the connecting tube for mounting on a housing of a transmission;

a hose having opposite upper and lower ends, the lower end of the hose being connected to the upper end of the connecting tube;

and the vent plug is connected with the upper end of the hose and communicated with the inside of the shell of the transmission device through the connecting pipe and the hose.

Preferably, the upper end of the connection pipe is interference-inserted into the inner hole of the lower end of the hose.

Preferably, the outer edge of the upper end of the connecting pipe is provided with an upper annular bulge, and when the connecting pipe is connected with the hose, the upper annular bulge of the connecting pipe is accommodated in an inner hole at the lower end of the hose in an interference manner.

Preferably, the vent plug comprises a valve core and a plug cap, the valve core is provided with a connecting part extending out, the outer edge of the end part of the connecting part is provided with an annular barb for preventing falling off, and when the vent plug is connected with the hose, the annular barb of the connecting part is accommodated in an inner hole at the upper end of the hose in an interference manner.

Preferably, the vent plug comprises a valve core and a plug cap, and the valve core is provided with a connecting part extending out;

the lower end of the hose is inserted into the inner hole in the upper end of the connecting pipe in an interference mode, and the upper end of the hose is inserted into the inner hole of the connecting portion in an interference mode.

Preferably, a plurality of first baffles are arranged in the connecting part, and the plurality of first baffles are used for prolonging the exhaust path in the connecting part.

Preferably, the exhaust assembly further comprises a sealing ring sleeved on the connecting pipe, a lower annular protrusion is arranged on the outer edge of the connecting pipe close to the lower end, and when the lower end of the connecting pipe is installed on the shell of the transmission device, the lower annular protrusion of the connecting pipe is used for pressing the sealing ring on the shell of the transmission device.

An exhaust assembly for a transmission, comprising:

a hollow metal tube having opposite upper and lower ends;

the plastic pipe is provided with an upper end and a lower end which are opposite, and the upper end of the metal pipe is tightly inserted into an inner hole at the lower end of the plastic pipe;

the vent plug comprises a valve core and a plug cap, wherein the valve core is provided with a connecting part, and the connecting part of the valve core is tightly inserted into an inner hole at the upper end of the plastic pipe.

Preferably, the outer edge of the upper end of the metal pipe is provided with an upper annular bulge, and when the metal pipe is connected with the plastic pipe, the upper annular bulge of the metal pipe is accommodated in an inner hole at the lower end of the plastic pipe in an interference manner.

Preferably, the outer edge of the end of the connecting portion is provided with an annular barb for preventing falling off, and when the vent plug is connected with the plastic pipe, the annular barb of the connecting portion is accommodated in an inner hole in the upper end of the plastic pipe in an interference manner.

Preferably, the exhaust assembly further comprises a sealing ring sleeved on the metal pipe, a lower annular protrusion is arranged on the outer edge of the metal pipe close to the lower end of the metal pipe, and when the lower end of the metal pipe is installed on the shell of the transmission device, the lower annular protrusion of the metal pipe is used for pressing the sealing ring on the shell of the transmission device.

A transmission comprising a housing and an exhaust assembly mounted on the housing and communicating with the interior of the housing, the exhaust assembly being as claimed in any one of the preceding claims.

Preferably, the transmission is an integrated central drive system for a new energy vehicle.

Preferably, the integrated central drive system comprises:

a motor module including a motor housing and a motor received inside the motor housing, the motor including a stator fixed to the motor housing, a rotor rotatably disposed inside the stator, and an output shaft fixed to the rotor;

a decelerator module including a decelerator housing and a decelerator accommodated in the decelerator housing, the decelerator housing and the decelerator being respectively attached to the motor housing, and an output shaft of the motor being coupled to the decelerator, the exhaust assembly being mounted on the decelerator housing.

Preferably, the reducer housing is provided with a mounting hole for mounting the exhaust assembly, a second baffle or a labyrinth mechanism is arranged in the reducer housing adjacent to the mounting hole, and the second baffle and the labyrinth mechanism are used for prolonging an exhaust path from the inside of the reducer housing to the exhaust assembly.

Compared with the prior art, the beneficial effects of the utility model include at least:

in the exhaust assembly of the transmission device, the vent plug is arranged on the shell of the transmission device through the hose and the connecting pipe, the hose reduces the influence of the vibration of the transmission device on the vent plug, and the joint of the exhaust assembly and the transmission device is not easy to generate holes or gaps, thereby improving the waterproof grade of the exhaust assembly and meeting the IP 68-grade waterproof requirement; in addition, the hose and the connecting tube extend the exhaust path of the expanded air in the transmission, thereby extending the transit time of the oil mist of the lubricating oil, which can condense and flow back in the connecting tube, which can adhere to the inner wall of the hose and flow back into the transmission, preventing or reducing the leakage of the lubricating oil in the transmission.

Drawings

Fig. 1 is a perspective view of an integrated central drive system according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view of an integrated central drive system according to an embodiment of the present invention.

Fig. 3 is an enlarged view of a portion S in fig. 2.

Fig. 4 is an exploded view of an exhaust assembly according to an embodiment of the present invention.

In the figure: 1. an integrated central drive system; 10. a motor module; 11. a motor housing; 111. a coolant passage; 12. a stator; 13. a rotor; 14. 15, a cover plate; 20. a retarder module; 21. a reducer housing; 211. mounting holes; 22. a speed reducer; 30. an exhaust assembly; 31. a connecting pipe; 311. an upper annular projection; 312. a lower annular projection; 32. a hose; 33. a vent plug; 331. a valve core; 3311. a connecting portion; 3312. an annular barb; 3313. a first baffle plate; 332. a plug cap; 34. and (5) sealing rings.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.

Before describing in detail, it is noted that the directional terms "front", "rear", "left", "right", "upper", "lower" in the present disclosure are used with reference to the accompanying drawings, and are not intended to limit the scope of the present disclosure.

The present invention provides an exhaust assembly 30 for a transmission that can be used as a transmission for a conventional fuel vehicle, as well as a transmission for a new energy vehicle (e.g., a hybrid vehicle or a pure electric vehicle, etc.), and that can also be used as a transmission for other vehicles (e.g., a ship, a train, or an aircraft, etc.). When the transmission is applied to a new energy vehicle, the transmission may be an integrated central drive system 1.

The structure of the transmission and the exhaust assembly 30 of the present invention will be described in detail below with reference to the accompanying drawings, taking as an example the integrated central drive system 1 applied to a new energy vehicle.

As shown in fig. 1 and 2, the integrated central drive system 1 includes a motor module 10 and a reducer module 20. A decelerator module 20 is attached to one end of the motor module 10 for decelerating the output rotation speed of the motor and increasing the output torque of the motor. In addition, the integrated central drive system 1 further includes a terminal block module (not shown) connected to the motor module 10 to provide power to the motor module 10.

Referring to fig. 2, the motor module 10 includes a motor housing 11 and a motor accommodated inside the motor housing 11. The motor housing 11 may be manufactured by casting. The motor used by the integrated central driving system 1 of the present invention may be, for example, a three-phase asynchronous motor or a permanent magnet synchronous motor. The motor includes a motor stator 12 fixed to the motor housing 11, a motor rotor 13 rotatably disposed inside the motor stator 12, and a motor output shaft (not shown) fixed to the motor rotor 13. Two

cover plates

14, 15 are attached to the left and right ends of the motor housing 11 by fasteners (e.g., bolts), and both ends of the motor output shaft are supported on the two

cover plates

14, 15 via bearings (e.g., deep groove ball bearings). Specifically, a central portion of each

cover plate

14, 15 is formed with a bearing housing (not shown) in which a bearing for supporting the output shaft of the motor is mounted. On the inner side of the bearing of the motor output shaft in the axial direction of the motor output shaft, a seal (not shown) is provided between the motor output shaft and the bearing housing, respectively, to prevent the entry of lubricating oil into the motor.

The retarder module 20 includes a retarder housing 21 and a retarder 22 accommodated inside the retarder housing 21. The reducer housing 21 is attached to the motor housing 11 of the motor module 10 at one end of the motor module 10 by means of fasteners (e.g., bolts). One end of the motor output shaft extends into the retarder module 20 to couple with the retarder 22.

The speed reducer 22 used in the driving system of the present invention may be a planetary gear speed reduction mechanism. The planetary gear reduction mechanism comprises a ring gear, a sun gear, a planet carrier and planet wheels supported on the planet carrier. The ring gear is fixed to the reducer housing 21, the sun gear is coupled with the motor output shaft, the planet carrier is disposed between the ring gear and the sun gear, and the planet gears on the planet carrier mesh with the ring gear and the sun gear. The output flange of the integrated central drive system 1 is coupled to the planet carrier of the gear unit 22 and is supported within the gear unit housing 21 via two tapered roller bearings.

In some embodiments of the present invention, the integrated central drive system 1 of the present invention further comprises a coolant passage 111 (so-called "water jacket") integrally formed within the motor housing 11. The coolant passage 111 is connected to an external coolant pump and a radiator (not shown). In this embodiment, the coolant passage 111 is formed in the motor housing 11 in the form of a spiral duct so that the coolant in the coolant passage 111 can exchange heat with the lubricating oil in the motor housing 11. In particular, as shown in fig. 2, the coolant flows around the outer circumference of the motor along the coolant passage 111 to cool the stator 12 of the motor.

The integrated central driving system 1 is provided with an exhaust assembly 30 on the housing, and the exhaust assembly 30 is communicated with the interior of the housing and used for releasing air expanded in the interior of the housing. The exhaust assembly 30 includes a connection pipe 31, a hose 32 and a vent plug 33, and the connection pipe 31 and the vent plug 33 are connected by the hose 32.

The connection pipe 31 is, for example, a hollow metal pipe, and the connection pipe 31 has opposite upper and lower ends, and the lower end of the connection pipe 31 is adapted to be mounted on the housing of the integrated central drive system 1 and communicates with the inside of the housing of the integrated central drive system 1. The connection pipe 31 extends the exhaust path of the expanded air in the integrated central drive system 1, and the passage time of the oil mist of the lubricating oil is extended, and the oil mist can be condensed and returned in the connection pipe 31, thereby preventing or reducing the leakage of the lubricating oil in the integrated central drive system 1. In one embodiment, the lower end of the connection pipe 31 is adapted to be mounted on the gear case 21, and more particularly, the lower end of the connection pipe 31 is adapted to be mounted on the gear case 21 farthest from the lubricating oil of the liquid, thereby reducing the amount of the liquid lubricating oil entering the connection pipe 31.

In some embodiments of the present invention, a mounting hole 211 is formed on the reducer case 21, the lower end of the connecting pipe 31 is installed in the mounting hole 211 of the reducer case 21, for example, by screwing, a second baffle (not shown) or a labyrinth mechanism (not shown) is disposed in the reducer case 21 adjacent to the mounting hole 211, and the second baffle and the labyrinth mechanism are used to extend the exhaust path from the inside of the reducer case 21 to the exhaust assembly 30, so as to extend the time for passing the oil mist of the lubricating oil, so that the oil mist can be condensed and returned on the exhaust path formed by the second baffle and the labyrinth mechanism, thereby preventing or reducing the leakage of the lubricating oil in the integrated central driving system 1, and simultaneously not affecting the release of the expanded air in the integrated central driving system 1.

The hose 32 is, for example, a hollow plastic tube, the hose 32 has an upper end and a lower end opposite to each other, the two ends of the hose 32 are respectively connected to the connection tube 31 and the vent plug 33, the upper end of the hose 32 is connected to the vent plug 33, and the lower end of the hose 32 is connected to the upper end of the connection tube 31. The hose 32 reduces the influence of the vibration of the transmission device on the vent plug 33, the joint of the exhaust assembly 30 and the transmission device is not easy to generate pores or gaps, the waterproof grade of the exhaust assembly 30 is improved, the IP 68-grade waterproof requirement is met, and the installation mode is convenient and rapid. Furthermore, the hose 32 extends the exhaust path of the expanded air in the integrated central drive system 1, and the passage time of the oil mist of the lubricating oil which can adhere to the inner wall of the hose 32 and flow back into the integrated central drive system 1, and prevents or reduces the leakage of the lubricating oil in the integrated central drive system 1 without affecting the release of the expanded air in the integrated central drive system 1.

In some embodiments of the present invention, the outer diameter of the upper end of the connecting pipe 31 is slightly larger than the inner diameter of the lower end of the hose 32, and the upper end of the connecting pipe 31 is inserted into the inner hole of the lower end of the hose 32 in an interference manner, so that the upper end of the connecting pipe 31 is tightly connected to the lower end of the hose 32, thereby preventing water from permeating from the outside and improving the waterproof grade of the exhaust assembly 30. In a specific embodiment, the outer edge of the upper end of the connection pipe 31 is provided with an upper annular protrusion 311, the outer diameter of the upper annular protrusion 311 is slightly larger than the inner diameter of the lower end of the hose 32, and when the connection pipe 31 is connected to the hose 32, the upper annular protrusion 311 of the connection pipe 31 is received in the inner hole of the lower end of the hose 32 in an interference manner, so as to prevent water from permeating from the outside and improve the waterproof grade of the exhaust assembly 30.

In some embodiments of the present invention, the outer diameter of the lower end of the hose 32 is slightly larger than the inner diameter of the upper end of the connection pipe 31, and the lower end of the hose 32 is inserted into the inner hole of the upper end of the connection pipe 31 in an interference manner, so that the upper end of the connection pipe 31 is tightly connected to the lower end of the hose 32, thereby preventing water from permeating from the outside and improving the waterproof grade of the exhaust assembly 30.

The vent plug 33 is connected to the upper end of the hose 32 and communicates with the inside of the housing of the transmission through the connection pipe 31 and the hose 32.

In some embodiments of the present invention, the vent plug 33 includes a valve core 331 and a plug cap 332, the plug cap 332 covers the opening of the one end of the valve core 331, a gap for gas to pass through is provided between the valve core 331 and the plug cap 332, the valve core 331 is provided with a connecting portion 3311 extending out, the outer edge of the end of the connecting portion 3311 is provided with an annular barb 3312 for preventing falling off, when the vent plug 33 is connected with the hose 32, the annular barb 3312 of the connecting portion 3311 is accommodated in the inner hole of the upper end of the hose 32 in an interference manner, the annular barb 3312 of the connecting portion 3311 prevents the vent plug 33 from falling off from the hose 32 on the one hand, on the other hand, the water infiltration from the outside.

In some embodiments of the present invention, the vent plug 33 includes a valve core 331 and a plug cap 332, the valve core 331 is provided with a connecting portion 3311 extending therefrom, an outer diameter of an upper end of the hose 32 is slightly larger than an inner diameter of the connecting portion 3311, an upper end of the hose 32 is inserted into an inner hole of the connecting portion 3311 by interference fit, the upper end of the hose 32 is tightly connected to the connecting portion 3311 of the vent plug 33, so as to prevent water from permeating from the outside, and improve a waterproof grade of the exhaust assembly 30.

In some embodiments of the present invention, referring to fig. 3, a plurality of first baffles 3313 are provided in the connecting portion 3311, and the plurality of first baffles 3313 are used to extend the exhaust path in the connecting portion 3311, so as to extend the oil mist passing time of the lubricating oil, and the oil mist can be condensed and returned in the connecting portion 3311, thereby preventing or reducing the leakage of the lubricating oil in the integrated central drive system 1, and simultaneously not affecting the release of the expanded air in the integrated central drive system 1. In one embodiment, the first baffles 3313 extend radially from a portion of the inner wall of the connecting portion 3311, the extending directions of adjacent first baffles 3313 are opposite, and the extending front portions of adjacent first baffles 3313 overlap, so that a curved exhaust path is formed in the connecting portion 3311, thereby extending the passage time of the oil mist of the lubricating oil.

In some embodiments of the present invention, the exhaust assembly 30 further includes a sealing ring 34 disposed on the connecting pipe 31, the outer edge of the connecting pipe 31 adjacent to the lower end is provided with a lower annular protrusion 312, when the lower end of the connecting pipe 31 is mounted on the casing of the transmission device, the lower annular protrusion 312 of the connecting pipe 31 is used for pressing the sealing ring 34 against the casing of the integrated central driving system 1, the lower annular protrusion 312 and the sealing ring 34 are matched, on one hand, leakage of the lubricating oil in the integrated central driving system 1 is prevented or reduced, on the other hand, water infiltration outside is prevented, and the waterproof grade of the exhaust assembly 30 is improved.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments without departing from the spirit and scope of the present invention, and all such changes are intended to be within the scope of the following claims.

Claims

1. An exhaust assembly for a transmission, comprising:

2. The transmission exhaust assembly according to claim 1, wherein the upper end of the connecting tube is interference inserted into the inner bore of the lower end of the hose.

3. The exhaust assembly of the transmission device according to claim 2, wherein the outer edge of the upper end of the connecting pipe is provided with an upper annular protrusion, and when the connecting pipe is connected with the hose, the upper annular protrusion of the connecting pipe is received in the inner hole of the lower end of the hose in an interference manner.

4. The exhaust assembly of the transmission device according to claim 1, wherein the vent plug comprises a valve core and a plug cap, the valve core is provided with a connecting part extending out, the outer edge of the end part of the connecting part is provided with an annular barb for preventing falling off, and when the vent plug is connected with the hose, the annular barb of the connecting part is accommodated in the inner hole at the upper end of the hose in an interference manner.

5. The transmission vent assembly of claim 1, wherein the vent plug includes a valve core and a plug cap, the valve core having a connection portion extending therefrom;

6. The exhaust assembly of the transmission according to claim 4 or 5, wherein a plurality of first baffles are provided in the connecting portion, the plurality of first baffles being adapted to extend the exhaust path in the connecting portion.

7. The exhaust assembly of the transmission of claim 1, further comprising a sealing ring disposed on the connecting tube, wherein the connecting tube has a lower annular protrusion on an outer edge thereof adjacent to the lower end thereof, and wherein the lower annular protrusion of the connecting tube is adapted to press the sealing ring against the housing of the transmission when the lower end of the connecting tube is mounted on the housing of the transmission.

8. An exhaust assembly for a transmission, comprising:

a hollow metal tube having opposite upper and lower ends;

9. The exhaust assembly according to claim 8, wherein the metal pipe has an upper annular protrusion at an outer edge of an upper end thereof, and the upper annular protrusion of the metal pipe is received in the inner hole of the lower end of the plastic pipe in an interference manner when the metal pipe and the plastic pipe are connected.

10. The exhaust assembly of the transmission device according to claim 8, wherein an outer edge of an end portion of the connecting portion is provided with an annular barb for preventing falling off, and when the vent plug is connected with the plastic pipe, the annular barb of the connecting portion is received in an inner hole at an upper end of the plastic pipe in an interference manner.

11. The transmission exhaust assembly according to claim 8, further comprising a seal ring disposed around the metal pipe, wherein the metal pipe has a lower annular protrusion on an outer edge thereof adjacent to the lower end thereof, and wherein the lower annular protrusion of the metal pipe is adapted to press the seal ring against the transmission housing when the lower end of the metal pipe is mounted on the transmission housing.

12. A transmission comprising a housing and an exhaust assembly mounted on the housing and communicating with the interior of the housing, the exhaust assembly being as claimed in any one of claims 1 to 11.

13. The transmission of claim 12, wherein the transmission is an integrated central drive system for a new energy vehicle.

14. The transmission of claim 13, wherein the integrated central drive system comprises:

15. The transmission of claim 14, wherein the reducer housing is provided with a mounting hole for mounting the exhaust assembly, and a second baffle or labyrinth mechanism is provided in the reducer housing adjacent the mounting hole for extending the exhaust path from the reducer housing to the exhaust assembly.