CN103233988A - One-way clutch using inner air drain for dust prevention - Google Patents
One-way clutch using inner air drain for dust prevention Download PDFInfo
- Publication number
- CN103233988A CN103233988A CN2013101705170A CN201310170517A CN103233988A CN 103233988 A CN103233988 A CN 103233988A CN 2013101705170 A CN2013101705170 A CN 2013101705170A CN 201310170517 A CN201310170517 A CN 201310170517A CN 103233988 A CN103233988 A CN 103233988A
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- China
- Prior art keywords
- overrunning clutch
- air drain
- way clutch
- vent slot
- pipeline section
- Prior art date
- 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 One-way clutch using an inner air drain for dust prevention. A ventilation groove is arranged at the position of the inner wall of a hollow pipe section on the one-way clutch, wherein the position corresponds to a shaft liner installation position, and length of the ventilation groove in the axial direction of the hollow pipe section of the one-way clutch is greater than that of the shaft liner. The one-way clutch using the inner air drain for the dust prevention has the advantages of being simple in structure, low in production cost, good in dustproof effect and the like.
Description
Technical field
The present invention relates to a kind of overrunning clutch, air drain dust-tight overrunning clutch in especially a kind of employing.
Background technique
Along with the deep development of reform, the raising of national economy and living standards of the people, China is transformed into automobile superpower gradually by the bicycle big country of the eighties in last century; Situation for automobile industry is still good.One-way element is vital part in the automobile starter, and for the quality that improves one-way element, in the life-span, it is very urgent to occupy sharp position in market competition.
The gas permeability of one-way element output shaft front end endoporus, the slippage flexibility on splined shaft plays an important role for one-way element; And in the long-term work environment, one-way element inside is played dustproof effect, directly have influence on the life-span of axle bush, thereby the operating life of whole one-way element is influenced to some extent.At present, such one-way element of great majority adopts the mode at an aperture of output shaft front end brill to solve gas permeability both at home and abroad, and when axle moved in endoporus with respect to one-way element, front end air suffered oppression and discharges from aperture or enter.It is relatively easily that a brill such mode of aperture is processed; but deficiency is arranged; it is exactly the endoporus that external dust can enter into output shaft from this aperture; to stick to diameter of axle surface, and make the axle bush dry tack free, granule can be accelerated the wearing and tearing of axle bush simultaneously; cause axle bush and the matching gap of axle to strengthen; directly have influence on the circular runout of external drive gear, cause difficulty during engagement, significantly reduced the working life of one-way element.
What present part unit adopted replaces original copper sheet axle bush with needle bearing, and the front end aperture is removed, because the fluted gap of needle bearing endoporus, air can pass through the groove of needle bearing endoporus like this, and is ventilative by one-way element internal splines gap.So also can play dustproof effect.But the price of needle bearing is very expensive, and the endoporus that press-fits requires superfinish, and slow-footed high precision apparatus and the labor cost of requiring simultaneously improved cost greatly, reduced enterprise profit.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of simple in structure, cost of production is low, air drain dust-tight overrunning clutch in the employing of good dustproof effect.
According to technological scheme provided by the invention, air drain dust-tight overrunning clutch in the described employing, hollow pipeline section inwall on overrunning clutch and corresponding axle bush installed position are provided with vent slot, and the length of vent slot on the axial direction of the hollow pipeline section of overrunning clutch is greater than the length of axle bush.
The length direction of described vent slot is consistent with the axial direction of the hollow pipeline section of overrunning clutch.
Be provided with vent slot more than three or three at the hollow pipeline section inwall on the overrunning clutch and corresponding axle bush installed position.
Described vent slot is distributed on the hollow pipeline section inwall circumference on the overrunning clutch.
That the present invention has is simple in structure, cost of production is low and advantage such as good dustproof effect.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the actual status architecture schematic representation that uses of the present invention.
Embodiment
The invention will be further described below in conjunction with specific embodiment.
As shown in the figure, air drain dust-tight overrunning clutch in this adopts, hollow pipeline section inwall on overrunning clutch 1 and corresponding axle bush installed position are provided with vent slot 2, and the length of vent slot 2 on the axial direction of the hollow pipeline section of overrunning clutch is greater than the length of axle bush.
The length direction of described vent slot 2 is consistent with the axial direction of the hollow pipeline section of overrunning clutch.
Be provided with vent slot 2 more than three or three at the hollow pipeline section inwall on the overrunning clutch 1 and corresponding axle bush installed position.
Described vent slot 2 is distributed on the hollow pipeline section inwall circumference on the overrunning clutch 1.
The present invention removes overrunning clutch 1 front end aperture, goes out vent slot 2 more than three or three at the hollow pipeline section inwall cold-extruded on the overrunning clutch 1; When splined shaft 4 relatively moved in axle bush 3, the air of front end sealing can be ventilative by vent slot 2, under the situation that does not influence service behaviour, plays the dustproof effect to this position.
During cold-extruded vent slot 2, select more than three, effect is relatively good; The length of every vent slot 2 on the axial direction of the hollow pipeline section of overrunning clutch is greater than the length of axle bush 3, assemble axle bush 3 like this after, the gas permeability of vent slot 2 can be relatively good.
During work, one-way element clutch 1 is mobile at splined shaft, and overrunning clutch 1 inner air is discharged or entered by overrunning clutch 1 inside through vent slot 2, has avoided the dust of outside air to enter, and plays dustproof effect.
The present invention does not need to change for other component of overrunning clutch 1, just can reach dustproof effect.Compare the dustproof construction that adopts needle bearing, reduced cost widely.
Claims (4)
1. air drain dust-tight overrunning clutch in the employing, it is characterized in that: the hollow pipeline section inwall on overrunning clutch (1) and corresponding axle bush installed position are provided with vent slot (2), and the length of vent slot (2) on the axial direction of the hollow pipeline section of overrunning clutch is greater than the length of axle bush.
2. air drain dust-tight overrunning clutch in the employing as claimed in claim 1, it is characterized in that: the length direction of described vent slot (2) is consistent with the axial direction of the hollow pipeline section of overrunning clutch.
3. air drain dust-tight overrunning clutch in the employing as claimed in claim 1 or 2, it is characterized in that: the hollow pipeline section inwall on overrunning clutch (1) and corresponding axle bush installed position are provided with the vent slot (2) more than three or three.
4. air drain dust-tight overrunning clutch in the employing as claimed in claim 3 is characterized in that: described vent slot (2) is distributed on the hollow pipeline section inwall circumference on the overrunning clutch (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101705170A CN103233988A (en) | 2013-05-09 | 2013-05-09 | One-way clutch using inner air drain for dust prevention |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101705170A CN103233988A (en) | 2013-05-09 | 2013-05-09 | One-way clutch using inner air drain for dust prevention |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103233988A true CN103233988A (en) | 2013-08-07 |
Family
ID=48882042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101705170A Pending CN103233988A (en) | 2013-05-09 | 2013-05-09 | One-way clutch using inner air drain for dust prevention |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103233988A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106994488A (en) * | 2017-06-01 | 2017-08-01 | 无锡市神力齿轮冷挤有限公司 | A kind of iron sheet cover lid riveting mouthful fitting device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3320007A (en) * | 1963-11-01 | 1967-05-16 | Morse Chain Co | Vented mechanical device |
| JPS60249738A (en) * | 1984-05-25 | 1985-12-10 | Nippon Denso Co Ltd | One way clutch |
| US5331860A (en) * | 1992-01-13 | 1994-07-26 | Valeo Systems D'essuyage | Throw limiting device for a starter head of an internal combustion engine |
| US20060144177A1 (en) * | 2004-12-20 | 2006-07-06 | Denso Corporation | Starter with overrunning clutch |
| CN203248565U (en) * | 2013-05-09 | 2013-10-23 | 无锡市神力齿轮冷挤有限公司 | One-way clutch capable of preventing dust by adoption of inner air groove |
-
2013
- 2013-05-09 CN CN2013101705170A patent/CN103233988A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3320007A (en) * | 1963-11-01 | 1967-05-16 | Morse Chain Co | Vented mechanical device |
| JPS60249738A (en) * | 1984-05-25 | 1985-12-10 | Nippon Denso Co Ltd | One way clutch |
| US5331860A (en) * | 1992-01-13 | 1994-07-26 | Valeo Systems D'essuyage | Throw limiting device for a starter head of an internal combustion engine |
| US20060144177A1 (en) * | 2004-12-20 | 2006-07-06 | Denso Corporation | Starter with overrunning clutch |
| CN203248565U (en) * | 2013-05-09 | 2013-10-23 | 无锡市神力齿轮冷挤有限公司 | One-way clutch capable of preventing dust by adoption of inner air groove |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106994488A (en) * | 2017-06-01 | 2017-08-01 | 无锡市神力齿轮冷挤有限公司 | A kind of iron sheet cover lid riveting mouthful fitting device |
| CN106994488B (en) * | 2017-06-01 | 2018-11-23 | 无锡市神力齿轮冷挤有限公司 | A kind of iron sheet the cover riveting mouth fitting device |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130807 |
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| RJ01 | Rejection of invention patent application after publication |