CN102102716B

CN102102716B - Start clutch

Info

Publication number: CN102102716B
Application number: CN200910262360.8A
Authority: CN
Inventors: 马提亚·斯波伯; 吕松良; 何青玮
Original assignee: Schaeffler Holding China Co Ltd; Schaeffler Trading Shanghai Co Ltd; Schaeffler Technologies AG and Co KG
Current assignee: Schaeffler Holding China Co Ltd; Schaeffler Trading Shanghai Co Ltd; Schaeffler Technologies AG and Co KG
Priority date: 2009-12-16
Filing date: 2009-12-16
Publication date: 2015-02-04
Anticipated expiration: 2029-12-16
Also published as: CN102102716A

Abstract

The invention discloses a start clutch, which is used for starting a motorcycle engine, and comprises an inner element and an outer element. The outer element comprises at least three cam slots which are formed on the inner circumference of the outer element at equal intervals; a clamping assembly is arranged in each cam slot; and the clamping assembly comprises a clamping piece, an elastic element and a roller. The start clutch in the technical scheme is simple in structure and low in manufacturing cost.

Description

A kind of startup clutch

Technical field

The present invention relates to and a kind of start clutch, specifically a kind ofly when motorcycle initiating, moment is transferred to crankshaft with the startup clutch of ato unit from motor.

Background technique

Startup clutch has use widely, and it is mainly used in providing unidirectional drive between driving and driven member, and after allowing driven element to run, when its speed surmounts driving element, driving element can not cause interference to driven element simultaneously.

Existing one starts clutch as shown in Chinese patent 200320120379.7, and this license day for announcing is on November 24th, 2004.Disclose in that patent and a kind of start clutch, comprise an outer ring element, within it circumference has multiple cam path equi-spaced apart to arrange, and an inner ring element with outer cylinder, it is connected with crankshaft.On one side of each cam path, have a jogger hole respectively, be provided with push rod and spring in jogger hole, the roller contact in one end of push rod and cam path, applies elastic force by the spring arranged in push rod to roller.

When using this startup clutch ato unit, first, drive roller to rotate after outer ring element rotates, and rotate by the frictional force drives inner ring element between roller and inner ring element.After motor is started working, it drives inner ring element quick rotation, and when inner ring element rotating speed exceedes outer ring element, roller starts to compress push rod due to the effect being subject to centrifugal force, finally causes roller to be separated with inner ring element, inner ring element thus independent rotation.

But existing startup clutch has a shortcoming, the jogger hole on its structure convexity race needs to be formed by point-device punching technology, and this result in complicated manufacturing process undoubtedly.In addition, existing startup clutch needs the combination of push rod and spring to provide elastic force to roller, and this result also in complicated installation process, adds manufacture cost.

Summary of the invention

The technical problem to be solved in the present invention is existing startup clutch technique and complicated structure, and manufacture cost is high.

For solving the problems of the technologies described above, startup clutch of the present invention comprises element in, one external component and clamping assembly, this external component comprises the inner ring that at least three cam path equi-spaced apart are arranged on external component, be provided with a clamping assembly in each cam path, this clamping assembly comprises a retaining member further, an elastic element and a roller, one end of this elastic element is closely clipped in one section of retaining member, and this roller is arranged in retaining member and with the other end of elastic element and contacts.

Startup clutch of the present invention, wherein, each retaining member comprises the first curved end and the second curved end on the other side, and this elastic element comprises a first end further, and this first end is clipped in this first curved end.

Startup clutch of the present invention, wherein, the first curved end of this retaining member arranges a lockhole, and the first end of this elastic element has a projection, and when this first end is clipped in retaining member curved end, this projection latches in this lockhole.

Startup clutch of the present invention, wherein, this elastic element is a Z-type spring.

Startup clutch of the present invention, wherein, this elastic element comprises one second end further, and the surface of its shape and roller matches.

Compared with prior art, startup clutch of the present invention uses clamping assembly instead of jogger hole and push rod and spring to realize and rollers co-operate, this clamping assembly adopts a retaining member, one elastic element and a rollers co-operate are formed, do not need jogger hole and push rod, thus simplify overall structure and assembly process, in addition, each retaining member can be produced in batches by stamping process, can be effectively cost-saving.

Accompanying drawing explanation

Innovation and creation that are claimed at this and/or that describe will be set forth further combined with one exemplary embodiment.These one exemplary embodiment are specifically set forth with reference to the accompanying drawings.These embodiments will not be construed as limiting the invention, in multiple accompanying drawing, wherein have close label to represent similar structure, and accompanying drawing is not necessarily drawn according to actual ratio, wherein:

Fig. 1 is the structural representation that the present invention starts clutch.

Fig. 2 is the close-up schematic view of part A in figure mono-of the present invention.

Fig. 3 is the structure for amplifying schematic diagram of retaining member of the present invention.

Fig. 4 is elastic element structure for amplifying schematic diagram of the present invention.

Embodiment

Please refer to Fig. 1, is concrete according to one embodiment of present invention startup clutch of setting forth.This startup clutch comprises element 20 and an external component 21 in one, the inner circumference of this external component 21 is arranged at intervals with multiple cam path 22 with substantially equidistant, in at least three cam paths 22, be respectively arranged with clamping assembly, each clamping assembly comprises a retaining member 24, shape and the cam path 22 of this retaining member 24 match, and can be tightly placed in cam path 22 to make this retaining member 24.Please further refer to Fig. 2 and Fig. 3, clamping assembly also comprises an elastic element 25 and roller 26 further, and each retaining member 24 has two curved end be oppositely arranged 241, and in addition, the intermediate portion of each retaining member 24 is also symmetrically arranged with two curved edges 242.One lockhole 243 arranges with in a curved end 241, pins elastic element 25 for coordinating.

In an embodiment, the inner circumference of this external component 21 is arranged at intervals with 3,6 or 9 cam paths 22 with substantially equidistant.

Please with further reference to Fig. 4, elastic element 25 can be a Z-type spring, it comprises a first paragraph 252, and this first paragraph 252 has the shape matched with a curved end 241 of retaining member 24, thus the first end 252 of this elastic element 25 can closely be clipped in a curved end 241 of retaining member 24.In addition, this first end 252 forms a projection 251 by punching press, and when the first end 252 of elastic element 25 is clipped in a curved end 241 of retaining member 24, this projection 251 can latch in this lockhole 243.

Elastic element 25 comprises one second end 253 further, and the surface of its shape and roller 26 matches.

When assembling each clamping assembly, first end 252 held tight of elastic element 25 is clipped in the curved end 241 of gripping member 24, and lockhole 243 cooperatively interacts to pin this elastic element 25 with the projection 251 of elastic element 25.Roller 26 is arranged between the second end 253 of elastic element 25 and another curved end 241 of retaining member 24.Then, by clamping assembly compacting means in cam path 22.

When using the present invention to start clutch, first, drive roller to rotate after external component rotates, and rotate by element in roller and interior interelement frictional force drives.After motor is started working, its drive in element quick rotation, when interior element rotating speed exceedes external component, roller, owing to being subject to centrifugal action compression elastic element, finally causes roller to be separated with interior element, interior element thus independent rotation.

Startup clutch of the present invention uses clamping assembly instead of jogger hole and push rod and spring to realize and rollers co-operate, this clamping assembly adopts a retaining member, one elastic element and a rollers co-operate are formed, compared with existing startup clutch, do not need jogger hole and push rod, thus simplify overall structure and assembly process, in addition, each retaining member can be produced in batches by stamping process, can be effectively cost-saving.

Although the present invention is only described with regard to some one exemplary embodiment, these descriptions should only exemplarily and not be construed as limiting.In the scope that appended claims is recorded, do not departing from spirit and scope of the invention situation, various change is all possible.

Reference number

Element in 20

21 external components

22 cam paths

24 retaining members

25 elastic elements

26 rollers

241 curved end

242 curved edges

243 lockholes

251 projections

252 first ends

253 second ends

Claims

1. a startup clutch, comprising:

Element in one;

One external component, is provided with at least three cam paths; And

Be arranged at the clamping assembly in cam path respectively, each clamping assembly comprises a retaining member, one elastic element and a roller, wherein, roller is arranged in retaining member, and elastic element contacts with roller, wherein, each retaining member comprises the first curved end and the second curved end on the other side, and described elastic element comprises a first end further, and this first end is clipped in described first curved end.

2. start clutch as claimed in claim 1, wherein, cam path is substantially equidistant to be arranged on the inner circumference of this external component.

3. start clutch as claimed in claim 2, wherein, the first curved end of this retaining member arranges a lockhole, and the first end of this elastic element has a projection, when the first end of this elastic element is clipped in the first curved end of retaining member, this projection latches in this lockhole.

4. start clutch as claimed in claim 3, wherein, this elastic element is a Z-type spring.

5. start clutch as claimed in claim 4, wherein, this elastic element comprises one second end further, and the surface of its shape and roller matches.

6. start clutch as claimed in claim 1, wherein this external component has 6 cam paths.