CN203627743U - Ventilation plug for gearbox - Google Patents
Ventilation plug for gearbox Download PDFInfo
- Publication number
- CN203627743U CN203627743U CN201320762537.2U CN201320762537U CN203627743U CN 203627743 U CN203627743 U CN 203627743U CN 201320762537 U CN201320762537 U CN 201320762537U CN 203627743 U CN203627743 U CN 203627743U
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- oil
- upper cavity
- gearbox
- plug
- cavity
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Abstract
A ventilation plug for a gearbox is composed of a plug body and a plug cap, and the plug cap is buckled on the plug body. The ventilation plug for the gear box is characterized in that an upper cavity and a lower cavity are formed in the plug body, wherein the upper cavity is of a circular truncated cone shape, the lower cavity is of a cylindrical shape, the upper cavity is communicated with the lower cavity, and the diameter of the bottom of the upper cavity is larger than that of the lower cavity; the lower portion of the upper cavity is provided with an oil blocking plate; through-flow gaps are formed between the oil blocking plate and the lower cavity and between the oil blocking plate and the side wall of the upper cavity; the upper portion of the upper cavity is provided with an oil filtering plate. According to the ventilation plug for the gearbox, firstly, primary separation can be performed on oil and gas in the gearbox through the oil blocking plate, secondly, secondary separation can be performed on the oil and gas in the gearbox through the side wall of the upper cavity, and finally tertiary separation is performed on through oil filtering plate; in this way, the oil and gas can be fully separated to the maximum degree, and oil injection is prevented. The ventilation plug can intake air in the two directions; due to the multi-protection effect, the three functions of ventilation, oil injection prevention and dust prevention can be achieved. Furthermore, the ventilation plug is compact in structure, wide in application range and long in service life. Besides, the split structure of the ventilation plug is convenient to disassemble, assemble and replace, and parts are convenient to clean.
Description
Technical field
The utility model relates to a kind of automobile gearbox part, particularly breather plug for automobile gear box.
Background technique
Breather plug is indispensable parts on the equipment such as gear housing such as automobile gearbox, speed reducer or main speed reduction box.In automobile running shutdown process, the temperature in automobile gearbox has a process that is warmed up to cooling.In this process, the air in gearbox expands with heat and contract with cold, and forms pressure reduction with ambient atmosphere, if when pressure reduction is very large, can make gearbox inner seal liner wear and tear too early, and breather plug is exactly a kind of air-breather that automobile gearbox is inner and the external world communicates that makes.Ventilation is plugged with two effects: the firstth, by the air in automobile gearbox and ambient atmosphere UNICOM, make gear-box inside and ambient pressure balance; The secondth, the dust in ambient atmosphere or moisture are blocked; make it to enter less in gear-box as far as possible; and make outside the MIN discharge gearbox of oil in its inner mist of oil; reduce loss of lubrication and prevent atmosphere pollution; be breather plug complete with external world's ventilation do the used time, also should there is effect dustproof, oil-leakage-prevention.At present, the kind of breather plug has open in usual, Normally closed type, and subject matter is: breather plug open in usual can not effectively prevent that foreign matter from entering in gearbox; Normally closed type breather plug is unidirectional unlatching, and after temp. of gear-shifting box reduces, extraneous gas can not add in gearbox.Easily there is fuel injection event in the breather plug also having.Patent document 20112026920.2 discloses a kind of breather plug, and this breather plug is provided with two circular cylindrical cavities that diameter is different, and valve block adopts quality of rubber materials, can solve exhaust and tonifying Qi problem.This breather plug while use, relies on cavity diameter to change and the sufficient length of larger diameter cavity makes Oil-gas Separation, therefore causes boundary dimension larger, and Environmental Conditions is limited, and rubber valve plate is easily aging in addition, and working life is short.
Model utility content
The purpose of this utility model is the drawback for prior art, and the gearbox breather plug of a kind of fully separation oil and gas and compact structure is provided.
Problem described in the utility model realizes with following technical proposals:
A kind of gearbox breather plug, it is made up of cock body and cock cap, and cock cap is fastened on cock body, and specialization is, in described cock body, be provided with upper and lower two cavitys, wherein upper cavity is frustoconic shape, and lower chamber is cylindrical, and upper and lower cavity communicates, upper cavity base diameter is greater than lower chamber diameter, be provided with oil baffle in upper cavity bottom, between oil baffle and lower chamber and between oil baffle and upper cavity sidewall, be provided with through-flow gap, be provided with oil filtering plate for oil on upper cavity top.
Above-mentioned gearbox breather plug, described oil baffle bottom surface distribution pit, the sidewall surfaces of described upper cavity is uneven.
Above-mentioned gearbox breather plug, the upper and lower oil cleaner screen sheet that is provided with of described oil filtering plate for oil, oil filtering plate for oil middle part is provided with filter layer.
Above-mentioned gearbox breather plug, described oil filtering plate for oil periphery is provided with elastic card, and elastic card mates clamping with cock body.
Above-mentioned gearbox breather plug, described cock body upper outside is provided with spacing preiection, and cock cap inner side is provided with the groove mating with spacing preiection, between described cock cap and cock body, leaves exhaust gap.
Above-mentioned gearbox breather plug, described oil baffle both sides are provided with engaging lug, and engaging lug and upper cavity inwall are affixed.
Breather plug provided by the utility model comprises cock body and cock cap, is provided with two cavitys that diameter is different in cock body, and upper cavity adopts frustoconic shape, and lower chamber adopts cylindrical, between two cavitys, oil baffle is set, and on upper cavity top, oil filtering plate for oil is set.This structure can be by the oil gas in gearbox through oil baffle first separation, then through the secondary separation of upper cavity sidewall, separates for three times more thereafter through oil filtering plate for oil, therefore can be to greatest extent fully separation oil and gas and anti-spraying oil; The utility model breather plug bidirection air intake, multiple-protection, can realize the large function of ventilation-anti-spraying oil-dust protection three, and compact structure, and Applicable scope is wide, long service life; In addition, its Split type structure is convenient to dismounting, replacing, cleaning components.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model;
The A of Fig. 2 Fig. 1 is to view;
Fig. 3 is explosive view of the present utility model.
In figure, each list of reference numerals is: 1, cock body, 1-1, spacing preiection, 2, cock cap, 2-1, groove, 3, oil filtering plate for oil, 3-1, filter layer, 4, elastic card, 5, upper cavity, 6, oil baffle, 6-1, engaging lug, 6-2, pit, 7, lower chamber.
Embodiment
Referring to Fig. 1, the utility model breather plug is made up of cock body 1 and cock cap 2, and cock cap is fastened on cock body, and cock body bottom is arranged on automobile gearbox.In cock body, be provided with upper and lower two cavitys, wherein upper cavity 5 is up-small and down-big frustoconic shape, and lower chamber 7 is cylindrical, and upper and lower cavity communicates, and upper cavity base diameter is greater than lower chamber diameter.Be provided with oil baffle 6 in upper cavity bottom, between oil baffle and lower chamber and between oil baffle and upper cavity peripheral side wall, be provided with through-flow gap.The sidewall surfaces of upper cavity 5 is uneven.Be provided with oil filtering plate for oil 3 on upper cavity top, the upper and lower oil cleaner screen sheet that is provided with of oil filtering plate for oil 3, oil filtering plate for oil middle part is provided with filter layer 3-1, and filter layer is made up of multiple layer metal silk screen, filter layer distribution vent.
Referring to Fig. 2, oil baffle 6 both sides are provided with engaging lug 6-1, and engaging lug and upper cavity inwall are affixed, and oil baffle bottom surface distributes for separating of the pit 6-2 of Oil in circulating gas liquid.
Referring to Fig. 1, Fig. 3, oil filtering plate for oil periphery is provided with elastic card 4, and elastic card mates clamping with cock body, this disassembly, cleaning easily of structure oil filtering plate for oil or replacing.Cock body 1 upper outside is provided with spacing preiection 1-1, and cock cap inner side is provided with the groove 2-1 mating with spacing preiection, and cock cap and cock body fasten and between the latter two, leave exhaust gap.
Referring to Fig. 1, the utility model breather plug is in the time that the gas pressure in gearbox increases, mist of oil air-flow is entered in lower chamber 7 by cock body bottom, then flow to upper cavity 5 from the through-flow gap of oil baffle 6 peripheries, in this process, most of fluid in air-flow is attached on the pit of oil baffle bottom surface, is back in gearbox; The air-flow going out through first separation enters after upper cavity, and upper cavity sidewall inclination, rough carries out secondary separation to air-flow, and isolated fluid is attached to upper cavity sidewall, is back to gearbox; Air-flow is passed through on continuing after three separating and filterings of oil filtering plate for oil 3, and gas is discharged from the exhaust gap between cock cap 2 and cock body 1.Fluid in said process air-flow is fully separated, and effectively prevents oil spout.
The utility model breather plug can two-wayly be ventilated, and cock cap and oil filtering plate for oil have dual dustproof effect.
Claims (6)
1. a gearbox breather plug, it is made up of cock body (1) and cock cap (2), cock cap is fastened on cock body, it is characterized in that, in described cock body, be provided with upper and lower two cavitys, wherein upper cavity (5) is frustoconic shape, lower chamber (7) is cylindrical, upper and lower cavity communicates, upper cavity base diameter is greater than lower chamber diameter, be provided with oil baffle (6) in upper cavity bottom, between oil baffle and lower chamber and between oil baffle and upper cavity sidewall, be provided with through-flow gap, be provided with oil filtering plate for oil (3) on upper cavity top.
2. gearbox breather plug according to claim 1, is characterized in that, described oil baffle (6) bottom surface distribution pit (6-2), and the sidewall surfaces of described upper cavity (5) is uneven.
3. gearbox breather plug according to claim 2, is characterized in that, the upper and lower oil cleaner screen sheet that is provided with of described oil filtering plate for oil (3), and oil filtering plate for oil middle part is provided with filter layer (3-1).
4. gearbox breather plug according to claim 3, is characterized in that, described oil filtering plate for oil periphery is provided with elastic card (4), and elastic card mates clamping with cock body.
5. gearbox breather plug according to claim 4, is characterized in that, described cock body (1) upper outside is provided with spacing preiection (1-1), and cock cap inner side is provided with the groove (2-1) mating with spacing preiection, between described cock cap and cock body, leaves exhaust gap.
6. gearbox breather plug according to claim 5, is characterized in that, described oil baffle (6) both sides are provided with engaging lug (6-1), and engaging lug and upper cavity inwall are affixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320762537.2U CN203627743U (en) | 2013-11-28 | 2013-11-28 | Ventilation plug for gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320762537.2U CN203627743U (en) | 2013-11-28 | 2013-11-28 | Ventilation plug for gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203627743U true CN203627743U (en) | 2014-06-04 |
Family
ID=50814225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320762537.2U Expired - Fee Related CN203627743U (en) | 2013-11-28 | 2013-11-28 | Ventilation plug for gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203627743U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864076A (en) * | 2015-05-22 | 2015-08-26 | 陕西法士特齿轮有限责任公司 | Ventilation plug |
| CN104989810A (en) * | 2015-07-14 | 2015-10-21 | 沃德传动（天津）股份有限公司 | Breather valve |
| CN105276170A (en) * | 2014-07-08 | 2016-01-27 | 上海汽车集团股份有限公司 | Transmission system and automobile |
| CN106352055A (en) * | 2016-12-01 | 2017-01-25 | 重庆青山工业有限责任公司 | Automobile gearbox air exhausting device |
| CN106594241A (en) * | 2017-02-09 | 2017-04-26 | 重庆青山工业有限责任公司 | Automobile transmission exhaust device |
| CN107339408A (en) * | 2017-07-13 | 2017-11-10 | 东风商用车有限公司 | A kind of gearbox device of air and its application method |
| CN108119637A (en) * | 2016-11-30 | 2018-06-05 | 长城汽车股份有限公司 | Breather valve |
| 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 |
| CN111720526A (en) * | 2020-06-28 | 2020-09-29 | 湖北工业大学 | Liquid blocking and ventilating plug for gearbox |
| CN113719602A (en) * | 2021-07-13 | 2021-11-30 | 东风汽车集团股份有限公司 | Gearbox air breather and gearbox |
-
2013
- 2013-11-28 CN CN201320762537.2U patent/CN203627743U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276170B (en) * | 2014-07-08 | 2018-01-30 | 上海汽车集团股份有限公司 | Transmission system, automobile |
| CN105276170A (en) * | 2014-07-08 | 2016-01-27 | 上海汽车集团股份有限公司 | Transmission system and automobile |
| CN104864076A (en) * | 2015-05-22 | 2015-08-26 | 陕西法士特齿轮有限责任公司 | Ventilation plug |
| CN104989810A (en) * | 2015-07-14 | 2015-10-21 | 沃德传动（天津）股份有限公司 | Breather valve |
| CN108119637B (en) * | 2016-11-30 | 2021-05-14 | 长城汽车股份有限公司 | Vent valve |
| CN108119637A (en) * | 2016-11-30 | 2018-06-05 | 长城汽车股份有限公司 | Breather valve |
| CN106352055A (en) * | 2016-12-01 | 2017-01-25 | 重庆青山工业有限责任公司 | Automobile gearbox air exhausting device |
| CN106594241A (en) * | 2017-02-09 | 2017-04-26 | 重庆青山工业有限责任公司 | Automobile transmission exhaust device |
| CN107339408A (en) * | 2017-07-13 | 2017-11-10 | 东风商用车有限公司 | A kind of gearbox device of air and its application method |
| 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 |
| CN111720526A (en) * | 2020-06-28 | 2020-09-29 | 湖北工业大学 | Liquid blocking and ventilating plug for gearbox |
| CN111720526B (en) * | 2020-06-28 | 2021-09-14 | 湖北工业大学 | Liquid blocking and ventilating plug for gearbox |
| CN113719602A (en) * | 2021-07-13 | 2021-11-30 | 东风汽车集团股份有限公司 | Gearbox air breather and gearbox |
| CN113719602B (en) * | 2021-07-13 | 2024-01-16 | 东风汽车集团股份有限公司 | Gearbox ventilation device and gearbox |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20211128 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |