CN102431388A - Ventilation plug for rear axle of automobile - Google Patents
Ventilation plug for rear axle of automobile Download PDFInfo
- Publication number
- CN102431388A CN102431388A CN2011103372680A CN201110337268A CN102431388A CN 102431388 A CN102431388 A CN 102431388A CN 2011103372680 A CN2011103372680 A CN 2011103372680A CN 201110337268 A CN201110337268 A CN 201110337268A CN 102431388 A CN102431388 A CN 102431388A
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- Prior art keywords
- plug
- rear axle
- hole
- cock body
- vent
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention relates to a ventilation plug for a rear axle of an automobile, which is mounted on an axle housing of the rear axle. A main body of the ventilation plug is a plug body with a through hole in the center, a plug cover is disposed on the top of the plug body, a vent hole is arranged on a side wall of the top of the plug body, an inner cavity of the plug body is communicated with the external atmosphere via the vent hole, membranes are disposed in the central through hole of the plug body and transversely block the central vent hole, but ventilating openings are reserved at local edges of the membranes. The ventilation plug can balance internal pressure and external pressure of the axle housing, prevents external mud and dust from splashing into the axle housing and prevents oil seepage and leakage after oil steam is condensed at the ventilation plug.
Description
Technical field
The present invention relates to a kind of breather stem vent plug structure of automobile axle.
Background technology
Automobile axle is splashed into axle housing inside in order to prevent outside muddy water, dust; Cause the gear premature wear; With prevent that the interior oil temperature rise from increase the axle housing internal pressure, cause axle-shaft oil seal, the place's leakage of oil of main shaft oil sealing, on axle housing or final drive casing, breather stem vent plug is set usually.At present, the rear axle ventilation plug great majority are Rubber Parts, for example; A kind of vehicle rear axle ventilation plug (Granted publication number be CN 201346961Y), it is a whole Rubber Parts, the interposition cock body; The top is the plug cover; The cock body center is an air extractor vent, and the hole wall on air extractor vent top is provided with the valve-closed port that is communicated with axle housing inside and outside atmosphere, and is connected on the axle housing through the circular groove of its waist and the circular hole interference fit on the axle housing.The structure of this breather stem vent plug is comparatively simple; Cost is lower; Can realize balance axle housing inside and outside air pressure balance and prevent that outside muddy water, dust are splashed into axle housing inside; But because axle housing in-to-in high-speed gear running causes oily temperature rise, the oil vapour that is produced to condense in the situation that still can produce the oil impregnate leakage of oil behind the breather stem vent plug place.
Summary of the invention
The purpose of this invention is to provide a kind of vehicle rear axle ventilation plug, condense in the situation that produces the oil impregnate leakage of oil behind the breather stem vent plug place to prevent oil vapour.
Technical scheme of the present invention is following:
A kind of vehicle rear axle ventilation plug, said breather stem vent plug is installed on the rear axle case, and its main body is the cock body that there is through hole at the center, and the cock body top has the air extractor vent that is communicated with cock body central through hole and outside atmosphere for the plug cover on the sidewall of cock body top; Be provided with diaphragm in the central through hole of said cock body, diaphragm laterally intercepts central through hole, but reserves vent at the local edge of diaphragm.
Further, said diaphragm has at least two, in the center roof vent of cock body, distribute up and down, and the vent of adjacent diaphragms is crisscross arranged by the first from left right side.
Further, said diaphragm arranges that in the central through hole medium dip of cock body vent is positioned at the extreme lower position of diaphragm.
Further, the bottom of said cock body is a claw, and said breather stem vent plug is connected to through claw on the circular hole of rear axle case, and claw and circular hole are interference fit.
Further, said claw is the pintongs claw-like.
Rear axle ventilation plug of the present invention adopts new project organization, has following beneficial effect:
1, the diaphragm that in the cock body central through hole, is provided with also leaves vent on the edge of; Can effectively stop from the oil vapour that evaporates of axle housing inside; Especially diaphragm tilts and alternative arrangement; Can increase the flow process of oil gas; Oil vapour is liquefied on diaphragm, and the lubricating oil after the liquefaction flows back to axle housing inside along diaphragm, through diaphragm stopping and liquefying and can prevent effectively that oil vapour that axle housing internal gear high-speed operation is produced from condensing in the situation that produces the oil impregnate leakage of oil behind the breather stem vent plug place oil vapour.
2, this breather stem vent plug has air extractor vent on the sidewall of cock body top, and axle housing inside can be connected with the outside through central through hole, vent and air extractor vent, thus effectively the balance axle housing inner with exterior air pressure balance.
3, this breather stem vent plug can stop effectively that through the plug cover of its top setting exterior dust and muddy water get in the axle housing, prevent to cause the axle housing inner body to damage.
Therefore, a kind of vehicle rear axle ventilation plug according to the invention can be realized balance axle housing inside and outside air pressure balance, to prevent that outside muddy water dust is splashed into axle housing inner and prevent that oil vapour from condensing in the situation that produces the oil impregnate leakage of oil behind the breather stem vent plug place.
Description of drawings
Fig. 1 is the structural representation of vehicle rear axle ventilation plug according to the invention;
Fig. 2 is the cutaway view of the A-A line of Fig. 1;
Fig. 3 is the upward view of Fig. 1;
Fig. 4 is the schematic perspective view of vehicle rear axle ventilation plug according to the invention.
The specific embodiment
Shown in accompanying drawing 1 to accompanying drawing 4; This vehicle rear axle ventilation plug is installed on the rear axle case, and its main body is the cock body 2 that there is through hole at the center, and cock body 2 tops are plug cover 1; The bottom of cock body 2 is a claw 3; Claw 3 is the pintongs claw-like, and breather stem vent plug is connected on the circular hole of rear axle case through claw 3, and claw 3 is an interference fit with circular hole.Have the air extractor vent 5 that is communicated with cock body inner chamber and outside atmosphere on the sidewall of cock body top; Be provided with two diaphragms 4 in the central through hole of cock body 2; This diaphragm 4 laterally intercepts central through hole, but reserves vent 6 at the local edge of diaphragm 4, and diaphragm 4 is arranged and distribution up and down in the central through hole medium dip of cock body; Vent 6 is positioned at the extreme lower position of diaphragm 4, and the vent 6 of two diaphragms is crisscross arranged by the first from left right side.
Claims (5)
1. vehicle rear axle ventilation plug; Said breather stem vent plug is installed on the rear axle case; Its main body is the cock body (2) that there is through hole at the center, and cock body (2) top is plug cover (1), has the air extractor vent (5) that is communicated with cock body central through hole and outside atmosphere on the sidewall of cock body top; It is characterized in that:
Be provided with diaphragm (4) in the central through hole of said cock body, diaphragm laterally intercepts central through hole, but reserves vent (6) at the local edge of diaphragm.
2. vehicle rear axle ventilation plug according to claim 1 is characterized in that: said diaphragm (4) has at least two, in the central through hole of cock body (2), distribute up and down, and the vent of adjacent diaphragms (6) is crisscross arranged by the first from left right side.
3. vehicle rear axle ventilation plug according to claim 1 and 2 is characterized in that: said diaphragm (4) arranges that in the central through hole medium dip of cock body (2) vent (6) is positioned at the extreme lower position of diaphragm.
4. vehicle rear axle ventilation plug according to claim 3 is characterized in that: the bottom of said cock body (2) is claw (3), and said breather stem vent plug is connected to through claw on the circular hole of rear axle case, and claw and circular hole are interference fit.
5. vehicle rear axle ventilation plug according to claim 4 is characterized in that: said claw (3) is the pintongs claw-like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103372680A CN102431388A (en) | 2011-10-31 | 2011-10-31 | Ventilation plug for rear axle of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103372680A CN102431388A (en) | 2011-10-31 | 2011-10-31 | Ventilation plug for rear axle of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102431388A true CN102431388A (en) | 2012-05-02 |
Family
ID=45979855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103372680A Pending CN102431388A (en) | 2011-10-31 | 2011-10-31 | Ventilation plug for rear axle of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102431388A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865353A (en) * | 2012-07-13 | 2013-01-09 | 宁波汉普塑业有限公司 | Vent valve assembly for car retarder |
| CN104015560A (en) * | 2014-06-24 | 2014-09-03 | 山东蓬翔汽车有限公司 | Ventilating device of automobile driving axle |
| CN107244233A (en) * | 2017-06-29 | 2017-10-13 | 安徽江淮汽车集团股份有限公司 | A kind of weight valve leak-proof device and automobile |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201502687U (en) * | 2009-09-23 | 2010-06-09 | 国茂减速机集团有限公司 | Breather plug of speed reducer |
| CN102141107A (en) * | 2011-04-07 | 2011-08-03 | 重庆长安汽车股份有限公司 | Rear shock absorber dustproof cover of automotive suspension system |
-
2011
- 2011-10-31 CN CN2011103372680A patent/CN102431388A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201502687U (en) * | 2009-09-23 | 2010-06-09 | 国茂减速机集团有限公司 | Breather plug of speed reducer |
| CN102141107A (en) * | 2011-04-07 | 2011-08-03 | 重庆长安汽车股份有限公司 | Rear shock absorber dustproof cover of automotive suspension system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865353A (en) * | 2012-07-13 | 2013-01-09 | 宁波汉普塑业有限公司 | Vent valve assembly for car retarder |
| CN104015560A (en) * | 2014-06-24 | 2014-09-03 | 山东蓬翔汽车有限公司 | Ventilating device of automobile driving axle |
| CN107244233A (en) * | 2017-06-29 | 2017-10-13 | 安徽江淮汽车集团股份有限公司 | A kind of weight valve leak-proof device and automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120502 |