CN2152915Y - Constant-mesh ratchet type monodirectional clutch - Google Patents
Constant-mesh ratchet type monodirectional clutch Download PDFInfo
- Publication number
- CN2152915Y CN2152915Y CN 92237593 CN92237593U CN2152915Y CN 2152915 Y CN2152915 Y CN 2152915Y CN 92237593 CN92237593 CN 92237593 CN 92237593 U CN92237593 U CN 92237593U CN 2152915 Y CN2152915 Y CN 2152915Y
- Authority
- CN
- China
- Prior art keywords
- ratchet
- output shaft
- elasticity ratchet
- elasticity
- gear output
- 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.)
- Expired - Fee Related
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- Mechanical Operated Clutches (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
The utility model discloses a one-way clutch, particularly a one-way clutch used for a starter transmission mechanism. The one-way clutch is composed of a one-way part and an operation part. The one-way clutch is characterized in that one end of a spline socket is provided with an elastic ratchet wheel in an interference way, and an inner ratchet wheel is arranged on the inner periphery of one end of a gear output shaft. The elastic ratchet wheel is always engaged with the inner ratchet wheel during the process of working. The utility model has the advantages of simple structure, convenient manufacture, low cost, long service life, large forward torque, and small reverse slide moment.
Description
The utility model relates to a kind of overrunning clutch, particularly the overrunning clutch in the starter motor driving mechanism.
Shortcomings such as mainly with roller type or friction disk type free wheel device, there is complex structure in they to traditional overrunning clutch, and part is many in addition, and working life is short.In order to overcome these shortcomings, 89104476.0 number patent has designed a kind of overrunning clutch of being made up of outer ratchet, internal clickwork and intermediary element, this overrunning clutch has been simplified conventional construction to a certain extent, but internal clickwork and intermediary element shape are very complicated, the manufacturing difficulty, and intermediary element must use plastic production, and compression resistance is lower, the biography square is little, load that can not withstand shocks, heavy duty.
The purpose of this utility model is the shortcoming that overcomes prior art, provides a kind of simple in structure, easily manufactured, and cost is low, and the life-span is long, and it is big that forward passes square, and oppositely sliding square is little, shock-resistant, the big overrunning clutch of loading.
In order to achieve the above object, new following structure and the principle of adopting of this practicality.Overrunning clutch comprises unidirectional part and operation partly, and unidirectional part mainly comprises gear output shaft 1, elasticity ratchet 2, splined sleeve 3 and cover cap 5.One end of gear output shaft 1 is a gear shape, and the interior garden week of the other end is provided with the internal clickwork that is complementary with elasticity ratchet 2.Elasticity ratchet 2 is internal diameter garden post helical springs than the little magnitude of interference of splined sleeve 3 external diameters, and its surface is wheel sour jujube shape, and its interference is installed on the external diameter of splined sleeve 3, and inserts in the internal clickwork of the tooth axle output shaft 1 that matches, and is meshing with each other.Cover cap 5 makes unidirectional part become as a whole.Operation partly comprises mobile spring 8, mobile lining 9 and spring ring 10 etc., and the operative section of its structure and traditional overrunning clutch is basic identical.
When starter motor rotates, during cranking internal combustion engine, act on the moment on the gear output shaft 1, because of being converted into frictional force with big portion peripheral force, the effect of elasticity ratchet 2 angles of wedge offsets, be delivered to external force on the elasticity ratchet 2 and be converted into pressure perpendicular to ratchet surface, only a spot of peripheral force makes elasticity ratchet 2 can finish the transmission of torque task effectively, reliably to the 2 generation effects of elasticity ratchet.
Behind engine starting, the rotating speed of gear output shaft 1 is higher than the starter motor rotating speed, and the internal clickwork band of gear output shaft 1 does to be higher than the rotation of starter motor with elasticity ratchet 2, because the rotation direction effect of elasticity ratchet 2 self loses transmission power and produces " skidding ".The rotating speed frictional force between high elasticity ratchet 2 and the splined sleeve 3 more is more little, reaches the purpose of protection starter armature.
The utility model is simple in structure, and is easily manufactured, and cost of production is low.Ratchet member is gear output shaft 1 and elasticity ratchet 2, after the assembling engagement, no longer separates all the time in the course of the work, and engagement no longer again because this one often nibble structure, has improved the operating life and the reliability of one-way element effectively.Similar one-way element with tradition is compared and can be prolonged more than two times service time, and weight only is traditional one-way element 2/3.Forward passes apart from increasing more than 1 times, and oppositely actual relative movement obviously reduces.
Fig. 1 is the utility model structural representation.
Fig. 2 is the internal clickwork end elevation of the utility model gear output shaft.
Fig. 3 is the utility model elasticity ratchet plan view.
Fig. 4 is the utility model elasticity ratchet side view.
1-gear output shaft, 2-elasticity ratchet, 3-splined sleeve, 4-cushion block, 5-cover cap, 6-packing ring, 7-anti-attrition packing ring, 8-mobile spring, 9-move lining, 10-spring ring, 11-spring, 12-support ring among the figure.
Claims (5)
1, a kind of mono-directional overrun clutch of forming by gear output shaft 1, splined sleeve 2, cover cap 5, mobile spring 8 and mobile lining 9 etc., an end interference that it is characterized by splined sleeve 2 is equipped with an elasticity ratchet 2, garden week be provided with the internal clickwork that is complementary with elasticity ratchet 2 in one end of gear output shaft 1, elasticity ratchet 2 is meshed with internal clickwork.
2, by the described mono-directional overrun clutch of claim 1, the ratchet number that it is characterized by elasticity ratchet 2 is 2-20, and the number of turns is 5-10.
3, by the described mono-directional overrun clutch of claim 1, the material section that it is characterized by elasticity ratchet body can be circular, also can be square or rectangular.
4, by claim 1,2 described mono-directional overrun clutchs, the Surface of action that it is characterized by internal clickwork in elasticity ratchet 2 and the gear output shaft 1 can be the plane, also can be curved surface, and its engagement angle of wedge is 5 °-18 °.
5, by the described mono-directional overrun clutch of claim 1, it is characterized by elasticity ratchet 2 usefulness elastic metallic materials and make or make with plastics with certain elastic strength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92237593 CN2152915Y (en) | 1992-10-26 | 1992-10-26 | Constant-mesh ratchet type monodirectional clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92237593 CN2152915Y (en) | 1992-10-26 | 1992-10-26 | Constant-mesh ratchet type monodirectional clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2152915Y true CN2152915Y (en) | 1994-01-12 |
Family
ID=33778834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92237593 Expired - Fee Related CN2152915Y (en) | 1992-10-26 | 1992-10-26 | Constant-mesh ratchet type monodirectional clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2152915Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086910A (en) * | 2011-01-14 | 2011-06-08 | 左臣伟 | Bidirectional output unidirectional clutch mechanism |
-
1992
- 1992-10-26 CN CN 92237593 patent/CN2152915Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086910A (en) * | 2011-01-14 | 2011-06-08 | 左臣伟 | Bidirectional output unidirectional clutch mechanism |
| CN102086910B (en) * | 2011-01-14 | 2013-04-17 | 左臣伟 | Bidirectional output unidirectional clutch mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |