CN113719602A - Gearbox air breather and gearbox - Google Patents
Gearbox air breather and gearbox Download PDFInfo
- Publication number
- CN113719602A CN113719602A CN202110787284.3A CN202110787284A CN113719602A CN 113719602 A CN113719602 A CN 113719602A CN 202110787284 A CN202110787284 A CN 202110787284A CN 113719602 A CN113719602 A CN 113719602A
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- Prior art keywords
- hole
- sealing
- gearbox
- sealing element
- groove
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- 238000007789 sealing Methods 0.000 claims abstract description 123
- 230000005540 biological transmission Effects 0.000 claims description 18
- 230000001681 protective effect Effects 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 15
- 239000003595 mist Substances 0.000 abstract description 6
- 239000000428 dust Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 10
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 5
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/027—Gearboxes; Mounting gearing therein characterised by means for venting gearboxes, e.g. air breathers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention relates to the technical field of gearboxes, in particular to a gearbox ventilating device and a gearbox. The device comprises a sealing element, a sheath, a sealing ball and a first connecting bulge, wherein the sealing element is provided with a first through hole along the length direction of the sealing element, a groove is formed in the first end of the sealing element, the groove is communicated with the first end of the first through hole, and the second end of the first through hole is used for being communicated with a cavity of the gearbox; the sealing ball is movably arranged in the groove and can block the first through hole; the jacket is sleeved on the first end of the sealing element in a matching manner, a movable gap is arranged between the sealing ball and the jacket, an exhaust gap is arranged between the groove and the jacket, the sealing sleeve is provided with a side plate, and a side plate gap is arranged on the side part of the first end of the sealing element; the first connecting bulge is arranged between the side plates and the side part of the first end of the sealing element, and a second through hole is formed in the first connecting bulge. The gearbox ventilating device and the gearbox provided by the invention can prevent water mist, dust and water flow from being sucked into the cavity of the gearbox.
Description
Technical Field
The invention relates to the technical field of gearboxes, in particular to a gearbox ventilating device and a gearbox.
Background
The inside sealed cavity that is of gearbox, at the gearbox course of operation, atmospheric pressure is very high in the cavity, consequently need set up the air vent on the gearbox, the gearbox is discharged to high-pressure gas, keeps gearbox inside and air pressure balance, avoids gearbox course of operation cavity internal pressure too big and leads to seal position damages such as oil blanket, faying face or the oil impregnate, arouses the gearbox trouble. Meanwhile, the gearbox oil has strict requirement on water content, and if the water content of the gearbox oil exceeds a certain limit value in the using process, the gearbox oil can be emulsified, so that the original lubricating property is lost, and the reliability and durability of the gearbox can also be influenced. Therefore, the vent hole needs to have the function of preventing water inflow, and the gearbox vent pipe in the prior art does not have the effective structural design of preventing water intrusion and preventing water mist from being sucked, and when the gearbox cavity is in a negative pressure state, the gearbox cavity cannot be prevented from sucking water mist.
Disclosure of Invention
The application provides a pair of gearbox air breather and gearbox has solved among the prior art when the gearbox cavity is in negative pressure state, can't prevent the gearbox cavity to inhale the technical problem of water smoke.
In one aspect, the present application provides a transmission breather device comprising a seal, a boot, a sealing ball, and a first connecting projection, wherein:
the sealing element is provided with a first end and a second end which are opposite to each other along the length direction, the sealing element is provided with a first through hole along the length direction of the sealing element, the first end of the sealing element is provided with a groove, the groove is communicated with the first end of the first through hole, and the second end of the first through hole is used for being communicated with a cavity of the gearbox;
the sealing ball is movably arranged in the groove and can block the first through hole;
the protective sleeve is sleeved on the first end of the sealing element in a matching mode, a movable gap is formed between the sealing ball and the protective sleeve, an exhaust gap is formed between the groove and the protective sleeve, the sealing sleeve is provided with a side plate, and the gap of the side plate is formed in the side portion of the first end of the sealing element;
the first connecting bulge is arranged between the side plate and the side part of the first end of the sealing element, a second through hole is formed in the first connecting bulge, and the exhaust gap is communicated with the second through hole.
Further, the curb plate with still be equipped with the second between the lateral part of the first end of sealing member and connect protruding, first connect protruding and the protruding edge of second connection the direction of the first end to the second end of sealing member interval sets gradually, be equipped with the third through-hole on the protruding second connection, the third through-hole with the setting of staggering of second through-hole.
Furthermore, the groove comprises a first limiting ring and a second limiting ring which are oppositely arranged, a limiting space is formed between the first limiting ring and the second limiting ring, the sealing ball is arranged in the limiting space, an exhaust gap is arranged between the first limiting ring and the sheath, and the second limiting ring is abutted to the sheath.
Further, the device still includes the sealed tube, the sealed tube also has relative first end and second end along length direction, the second end of sealing member fixed set up in the first end of sealed tube, the second end of sealed tube with the gearbox cavity intercommunication.
Further, still be provided with overlap joint portion on the sealing member, overlap joint portion overlap joint sets up on the mouth of pipe of sealing tube first end.
Further, the second end of sealing member still is equipped with labyrinth structure, labyrinth structure includes the edge first dog, connecting block and the second dog that the direction of first end to second end of sealing member connected gradually, wherein, first dog combines the second dog is followed sealing member length direction's projection covers the second end of sealing member, first dog with be equipped with first blow vent between the sealed tube, first dog with be equipped with the second blow vent between the sealed tube, the connecting block with be equipped with the third blow vent between the sealed tube, first blow vent, second blow vent and third blow vent form exhaust passage.
Furthermore, a plug is arranged at the second end of the sealing tube, a fourth through hole is formed in the plug, one end of the fourth through hole is communicated with the transmission case communicating cavity, and the other end of the fourth through hole is communicated with the second end of the sealing tube.
Further, the plug is followed the direction of first end to the second end of sealing member is equipped with intercommunication portion, spacing portion and screw thread portion in proper order, the one end setting of fourth through-hole is in the intercommunication portion, the other end setting is in the screw thread portion, the intercommunication portion is fixed to be set up in the second end of sealing tube, spacing portion butt is in on the mouth of pipe of sealing tube second end, screw thread portion with the gearbox passes through threaded connection.
Further, a groove is formed in the threaded portion, an O-shaped sealing ring is arranged on the groove in a matched mode, and the O-shaped sealing ring is close to the limiting portion.
In another aspect, the present application provides a transmission including a transmission breather device as described above.
The beneficial effect of this application is as follows:
the application provides a gearbox, including gearbox breather, when atmospheric pressure in the gearbox cavity is greater than atmospheric pressure, oil gas in the gearbox cavity can get into first through-hole to form high-pressure air current in first through-hole, this high-pressure air current can push up the ball sealer, flow out from the exhaust clearance between recess and sheath, and flow into the second through-hole, because the seal cover has the curb plate, the curb plate clearance sets up the lateral part at the first end of sealing member, therefore form the gas vent between the opening part of sheath and the sealing member, therefore the oil gas that flows into the second through-hole is discharged from the gas vent, in order to reach the exhaust effect; when the air pressure of the cavity of the gearbox is smaller than or equal to the atmospheric pressure, the sealing ball can return to the initial position again due to the negative pressure of the cavity to block the first through hole, so that the sealing effect is achieved, the through hole and the outside are kept relatively airtight, and water mist, dust and water flow are prevented from being sucked into the cavity of the gearbox.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
Fig. 1 is a cross-sectional view of a transmission breather device provided in this embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment provides a gearbox ventilation device, fig. 1 is a cross-sectional view of the gearbox ventilation device provided by the embodiment, and with reference to fig. 1, the gearbox ventilation device provided by the embodiment comprises a sealing element, a sheath 3, a sealing ball 1 and a first connecting protrusion 22, wherein the sealing element is provided with a first end and a second end which are opposite to each other along the length direction, the sealing element is provided with a first through hole 29 along the length direction of the sealing element, the first end of the sealing element is provided with a groove, the groove is communicated with the first end of the first through hole 29, and the second end of the first through hole 29 is used for being communicated with a cavity of a gearbox; the sealing ball 1 is movably arranged in the groove, and the sealing ball 1 can block the first through hole 29; the protective sleeve 3 is sleeved on the first end of the sealing element in a matching mode, a movable gap is formed between the sealing ball 1 and the protective sleeve 3, an exhaust gap is formed between the groove and the protective sleeve 3, the protective sleeve 3 is provided with a side plate, and a side plate gap is formed in the side portion of the first end of the sealing element; the first connecting projection 22 is provided between the side plate and the side portion of the first end of the sealing member, the first connecting projection 22 is provided with a second through hole 26, and the exhaust gap is communicated with the second through hole 26.
According to the gearbox ventilation device provided by the embodiment, when the air pressure in the gearbox cavity is greater than the atmospheric pressure, oil gas in the gearbox cavity can enter the first through hole 29, and high-pressure air flow is formed in the first through hole 29, the sealing ball 1 can be jacked open by the high-pressure air flow, flows out from the exhaust gap between the groove and the sheath 3, and flows into the second through hole 26 of the first connecting protrusion 22, the sheath 3 can be fixed at the first end of the sealing element by the first connecting protrusion 22, and is prevented from falling off due to impact of the sealing ball 1, because the side plate gap of the sealing sleeve is arranged on the side part of the first end of the sealing element, an exhaust port is formed between the opening of the sheath 3 and the sealing element, and the oil gas flowing into the second through hole 26 is exhausted from the exhaust port, so that an exhaust effect is achieved; when the air pressure of the cavity of the gearbox is smaller than or equal to the atmospheric pressure, the sealing ball 1 returns to the initial position again due to the negative pressure of the cavity, the first through hole 29 is blocked, the sealing effect is achieved, the through hole and the outside are kept relatively closed, and therefore water mist, dust and water flow are prevented from being sucked into the cavity of the gearbox.
Preferably, the sealing ball 11 in this embodiment may be a rubber ball, and the sealing member may be a cylindrical or rectangular parallelepiped, which is not limited in this embodiment.
Further, because be equipped with second through-hole 26 in the first connection arch 22, be gapped between the curb plate of first connection arch 22 and sheath 3 promptly, for guaranteeing the fixed effect of sheath 3, still be equipped with second connection arch 21 between the lateral part of the first end of curb plate and sealing member in this embodiment, first connection arch 22 and second connection arch 21 set up along the direction of the first end of sealing member to second end interval in proper order, be equipped with third through-hole 25 on the second connection arch 21, third through-hole 25 sets up with second through-hole 26 staggeredly, second connection arch 21 has filled the clearance between first connection arch 22 and the 3 curb plates of sheath promptly.
Further, the oil gas flowing out of the exhaust gap flows into the second through hole 26, bypasses the gap between the position between the first connecting protrusion 22 and the second connecting protrusion 21 and the side plate of the sheath 3, enters the third through hole 25, and is exhausted from the exhaust port formed between the opening of the sheath 3 and the sealing element.
Preferably, in the embodiment, the cross sections of the first connecting protrusion 22 and the second connecting protrusion 21 are triangular, and the abutting parts of the first connecting protrusion 22 and the second connecting protrusion 21 and the sheath 3 are both provided with abutting surfaces, so that the abutting area is increased, and the fixing effect of the sheath 3 is enhanced.
Referring to fig. 1, the groove of the present embodiment includes a first limiting ring 27 and a second limiting ring 28 that are disposed opposite to each other, a limiting space is formed between the first limiting ring 27 and the second limiting ring 28, the sealing ball 1 is disposed in the limiting space, an exhaust gap is disposed between the first limiting ring 27 and the sheath 3, and the second limiting ring 28 abuts against the sheath 3, so as to further ensure the fixing effect of the sheath 3.
With reference to fig. 1, the transmission case breather device in this embodiment further includes a sealing tube 4, where the sealing tube 4 also has a first end and a second end opposite to each other along the length direction, the second end of the sealing member is fixedly disposed in the first end of the sealing tube 4, and the second end of the sealing tube 4 is communicated with the transmission case cavity. Preferably, the sealing element is further provided with a lapping part 7, and the lapping part 7 is lapped on the pipe orifice at the first end of the sealing pipe 4 to play a limiting role.
Further, the second end of sealing member still is equipped with labyrinth structure, labyrinth structure includes the first dog 51 that connects gradually along the direction of the first end to the second end of sealing member, connecting block and second dog 52, wherein, first dog 51 combines the second dog 52 to cover the second end of sealing member along the projection of sealing member length direction, be equipped with first blow vent between first dog 51 and the sealed tube 4, be equipped with the second blow vent between second dog 52 and the sealed tube 4, be equipped with the third blow vent between connecting block and the sealed tube 4, first blow vent, second blow vent and third blow vent form exhaust passage.
When the atmospheric pressure in the gearbox cavity is greater than atmospheric pressure, oil gas in the gearbox cavity can get into the first through-hole 29 of sealing member through exhaust passage in, because first dog 51 combines second dog 52 to cover the second end of sealing member along the projection of sealing member length direction, first dog 51 and second dog 52 can block the oil that erupts from the gearbox cavity promptly, prevent that the oil that erupts from getting into in the first through-hole 29.
Referring to fig. 1, in this embodiment, a plug is disposed at the second end of the sealing tube 4, a second through hole 61 is disposed inside the plug, one end of the second through hole 61 is communicated with the cavity of the transmission case, and the other end is communicated with the second end of the sealing tube 4.
Further, the plug is provided with a communication portion 62, a limiting portion 63 and a threaded portion 64 in sequence along the direction from the first end to the second end of the sealing element, one end of the second through hole 61 is arranged in the communication portion 62, the other end of the second through hole is arranged in the threaded portion 64, the communication portion 62 is fixedly arranged in the second end of the sealing tube 4, the limiting portion 63 abuts against the pipe orifice of the second end of the sealing tube 4, and the threaded portion 64 is in threaded connection with the gearbox, namely, the ventilating device is fixed on the gearbox.
Furthermore, a groove is formed in the threaded portion 64, an O-shaped sealing ring 65 is arranged on the groove in a matched mode, and the O-shaped sealing ring 65 is close to the limiting portion 63 so that the sealing effect of the ventilation device is improved.
Example 2
The present embodiment provides a transmission comprising the transmission breather of embodiment 1. When the air pressure in the gearbox cavity is greater than the atmospheric pressure, oil gas in the gearbox cavity can enter the first through hole 29, and high-pressure air flow is formed in the first through hole 29, the high-pressure air flow can prop the sealing ball 1 open, flows out from an exhaust gap between the groove and the sheath 3, and flows into the second through hole 26 of the first connecting bulge 22, the sheath 3 can be fixed at the first end of the sealing element by the first connecting bulge 22, the falling off caused by the impact of the sealing ball 1 is avoided, because a side plate gap of the sealing sleeve is arranged at the side part of the first end of the sealing element, an exhaust port is formed between the opening of the sheath 3 and the sealing element, and the oil gas flowing into the second through hole 26 is exhausted from the exhaust port, so that the exhaust effect is achieved; when the air pressure of the cavity of the gearbox is smaller than or equal to the atmospheric pressure, the sealing ball 1 returns to the initial position again due to the negative pressure of the cavity, the first through hole 29 is blocked, the sealing effect is achieved, the through hole and the outside are kept relatively closed, and therefore water mist, dust and water flow are prevented from being sucked into the cavity of the gearbox.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A transmission breather device, comprising a seal, a boot, a sealing ball, and a first connecting projection, wherein:
the sealing element is provided with a first end and a second end which are opposite to each other along the length direction, the sealing element is provided with a first through hole along the length direction of the sealing element, the first end of the sealing element is provided with a groove, the groove is communicated with the first end of the first through hole, and the second end of the first through hole is used for being communicated with a cavity of the gearbox;
the sealing ball is movably arranged in the groove and can block the first through hole;
the protective sleeve is sleeved on the first end of the sealing element in a matching mode, a movable gap is formed between the sealing ball and the protective sleeve, an exhaust gap is formed between the groove and the protective sleeve, the sealing sleeve is provided with a side plate, and the gap of the side plate is formed in the side portion of the first end of the sealing element;
the first connecting bulge is arranged between the side plate and the side part of the first end of the sealing element, a second through hole is formed in the first connecting bulge, and the exhaust gap is communicated with the second through hole.
2. The gearbox ventilating device according to claim 1, wherein a second connecting protrusion is further arranged between the side plate and the side portion of the first end of the sealing element, the first connecting protrusion and the second connecting protrusion are sequentially arranged at intervals along the direction from the first end to the second end of the sealing element, a third through hole is formed in the second connecting protrusion, and the third through hole and the second through hole are arranged in a staggered mode.
3. The gearbox breather device of claim 2, wherein the groove comprises a first limit ring and a second limit ring which are arranged oppositely, a limit space is formed between the first limit ring and the second limit ring, the sealing ball is arranged in the limit space, an exhaust gap is arranged between the first limit ring and the jacket, and the second limit ring abuts against the jacket.
4. The transmission breather of claim 1, further comprising a seal tube also having a first end and a second end opposite along a length, the second end of the seal member fixedly disposed within the first end of the seal tube, the second end of the seal tube in communication with the transmission cavity.
5. The transmission breather of claim 4, wherein the seal is further provided with an overlap portion that overlaps the orifice at the first end of the seal tube.
6. The transmission case breather apparatus according to claim 5, wherein the second end of the sealing element is further provided with a labyrinth structure, the labyrinth structure comprises a first stopper, a connecting block and a second stopper which are sequentially connected in a direction from the first end to the second end of the sealing element, wherein the first stopper covers the second end of the sealing element in combination with a projection of the second stopper in a length direction of the sealing element, a first vent hole is provided between the first stopper and the sealing tube, a second vent hole is provided between the first stopper and the sealing tube, a third vent hole is provided between the connecting block and the sealing tube, and the first vent hole, the second vent hole and the third vent hole form a vent passage.
7. The transmission case breather apparatus of claim 4, wherein the second end of the seal tube is provided with a plug, the plug is internally provided with a fourth through hole, one end of the fourth through hole is communicated with the transmission case communicating cavity, and the other end of the fourth through hole is communicated with the second end of the seal tube.
8. The gearbox ventilating device according to claim 7, wherein the plug is provided with a communicating part, a limiting part and a threaded part in sequence from the first end to the second end of the sealing element, one end of the fourth through hole is arranged in the communicating part, the other end of the fourth through hole is arranged in the threaded part, the communicating part is fixedly arranged in the second end of the sealing tube, the limiting part abuts against a tube opening of the second end of the sealing tube, and the threaded part is in threaded connection with the gearbox.
9. The transmission breather of claim 8, wherein the threaded portion defines a groove, the groove having an O-ring disposed thereon, the O-ring being disposed proximate the stop portion.
10. A gearbox comprising a gearbox breather according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110787284.3A CN113719602B (en) | 2021-07-13 | 2021-07-13 | Gearbox ventilation device and gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110787284.3A CN113719602B (en) | 2021-07-13 | 2021-07-13 | Gearbox ventilation device and gearbox |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113719602A true CN113719602A (en) | 2021-11-30 |
| CN113719602B CN113719602B (en) | 2024-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110787284.3A Active CN113719602B (en) | 2021-07-13 | 2021-07-13 | Gearbox ventilation device and gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113719602B (en) |
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| EP1918622A2 (en) * | 2006-11-02 | 2008-05-07 | Dr.Ing. h.c.F. Porsche Aktiengesellschaft | Device for deaerating a vehicle transmission, in particular an engine-mounted front axle transmission |
| CN201045035Y (en) * | 2007-03-29 | 2008-04-09 | 东风汽车集团股份有限公司 | Automobile centralized ventilation arrangement |
| JP2012036986A (en) * | 2010-08-09 | 2012-02-23 | Aisin Ai Co Ltd | Breather structure of transmission |
| JP2013113386A (en) * | 2011-11-29 | 2013-06-10 | Fuji Heavy Ind Ltd | Breather device |
| CN202441859U (en) * | 2012-02-29 | 2012-09-19 | 浙江天鸿传动机械有限公司 | Pressure ventilation plug |
| CN202674261U (en) * | 2012-07-13 | 2013-01-16 | 宁波汉普塑业有限公司 | Breather assembly of 6AT automatic transmission |
| CN203627743U (en) * | 2013-11-28 | 2014-06-04 | 长城汽车股份有限公司 | Ventilation plug for gearbox |
| CN203926707U (en) * | 2014-07-13 | 2014-11-05 | 江苏泰隆减速机股份有限公司 | A kind of speed reducer abat-vent |
| CN104343941A (en) * | 2014-07-29 | 2015-02-11 | 宁波吉利罗佑发动机零部件有限公司 | Breather valve applicable to transmission |
| JP2016176561A (en) * | 2015-03-20 | 2016-10-06 | アイシン・エィ・ダブリュ株式会社 | Automatic transmission and vehicle equipped with the same |
| CN205089948U (en) * | 2015-09-10 | 2016-03-16 | 广州汽车集团股份有限公司 | Gearbox breather plug, gearbox breather plug mounting structure and gearbox |
| CN205578682U (en) * | 2016-04-06 | 2016-09-14 | 浙江吉利控股集团有限公司 | Derailleur breather plug |
| DE102017209086A1 (en) * | 2017-05-30 | 2018-12-06 | Bayerische Motoren Werke Aktiengesellschaft | Venting device for a transmission of a motor vehicle, and motor vehicle with such a venting device |
| CN207213108U (en) * | 2017-08-28 | 2018-04-10 | 安徽江淮汽车集团股份有限公司 | A kind of gearbox vent plug |
| JP2019074127A (en) * | 2017-10-14 | 2019-05-16 | トヨタ自動車株式会社 | Breather device |
| CN208074141U (en) * | 2018-02-23 | 2018-11-09 | 浙江吉利汽车研究院有限公司 | Air-breather and speed changer |
| CN108458092A (en) * | 2018-03-30 | 2018-08-28 | 安徽江淮汽车集团股份有限公司 | Gearbox vent plug |
| CN208417880U (en) * | 2018-05-29 | 2019-01-22 | 众奥自动化科技（上海）有限公司 | A kind of gearbox oil pipe connector |
| CN208858871U (en) * | 2018-09-18 | 2019-05-14 | 青岛银菲特精密机械有限公司 | A kind of ascending stair machine driving speed reducer |
| CN209083956U (en) * | 2018-11-14 | 2019-07-09 | 徐州徐工传动科技有限公司 | A kind of normally closed type air-breather and driving bridge for engineering machinery, gearbox, speed reducer |
| CN209800710U (en) * | 2018-12-28 | 2019-12-17 | 东风格特拉克汽车变速箱有限公司 | Gear selecting and shifting assembly integrating functions of ventilation and gear selecting and shifting of gearbox |
| CN110259922A (en) * | 2019-03-22 | 2019-09-20 | 陕西法士特齿轮有限责任公司 | A kind of oil liquid sealing and cooling device applied to gearbox stomata |
| CN210686918U (en) * | 2019-08-28 | 2020-06-05 | 泸州邦立减速机有限责任公司 | Breather plug for speed reducer |
| CN211117482U (en) * | 2019-10-30 | 2020-07-28 | 柳州上汽汽车变速器有限公司 | Transmission breather plug |
| CN211371236U (en) * | 2020-01-17 | 2020-08-28 | 范小蓉 | Pressure relief structure for engine gearbox |
| CN211820665U (en) * | 2020-02-09 | 2020-10-30 | 浙江轩孚自动变速器有限公司 | Gearbox breather |
| CN211975745U (en) * | 2020-03-20 | 2020-11-20 | 江苏三乔智能科技有限公司 | Balanced air spring with elastic stopping piece |
| CN212839295U (en) * | 2020-06-24 | 2021-03-30 | 十堰市茂宇工贸有限公司 | Automobile gearbox shell |
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