CN2321973Y - Planetary wheel for freewheel clutch - Google Patents
Planetary wheel for freewheel clutch Download PDFInfo
- Publication number
- CN2321973Y CN2321973Y CN 96224212 CN96224212U CN2321973Y CN 2321973 Y CN2321973 Y CN 2321973Y CN 96224212 CN96224212 CN 96224212 CN 96224212 U CN96224212 U CN 96224212U CN 2321973 Y CN2321973 Y CN 2321973Y
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- wheel
- star
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- utility
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Abstract
The utility model relates to a planetary wheel for freewheel clutches. The middle part of a planetary wheel is the middle hole of the planetary wheel; three work-typed surfaces are arranged on the trisection angle of the planetary wheel; the same surfaces of three work-typed surface grooves are provided with propping pin holes. The utility model adopts archimedean helical line as line-typed mathematical model to carry out the design of the work-typed surface of the planetary wheel. The line-typed equation of the work-typed surface is rho=rho 0 +delta. that. The position of a work place of the utility model can be effectively and accurately determined when the planetary wheel is used. The abrasion of the utility model can be controlled; the use performance of the utility model can be improved. The utility model has the advantages of long service life, simple structure and easy manufacture. The utility model is suitable for freewheel clutches of electrically-starting motorcycles.
Description
The utility model relates to the various free wheel devicees that adopt the electricity starting, the free wheel device star-wheel that specifically a kind of motorcycle is used.
Free wheel device is as the critical component in the electric starter structure, performance to motorcycle has very important effect, it is absolute reliable that the performance of free wheel device is wanted, particularly fault rate is zero on " disengaging " functional theories after the starting, otherwise can cause actuating motor to burn out, whole electric starter structure lost efficacy.And influence the factor of its function, and mainly be the work profile structure of free wheel device star-wheel, because star-wheel board line contact condition when work, therefore produce the very big angle stress that connects, the work profile is more easy to wear, and the star-wheel after the wearing and tearing can not finish the function of starting again.Now, the technician adopts cylindrical roller envelope line style and eccentric arc line style to carry out the design of star-wheel molded lines usually.Because the roller envelope only is made up of several points, curve is discontinuous, and very rough when processing fits to envelope, manufacturability is bad, and the size after the processing can not detect in accurate measurement.Though eccentric arc line style processing is simple, the tolerance grade of throw of eccentric be cannot say for sure card, makes free wheel device be prone to the not cleer and peaceful phenomenon such as can not separate of separation in use.More than two kinds of star wheel structures because in size Control with detect trouble, the molded lines problem on deformation that occurs when often making heat treatment influences star-wheel functional reliability and life-span.
The utility model is designed a kind of work profile of free wheel device star-wheel at the prior art above shortcomings, makes processing simple, easy, be convenient to size Control and measurement, the star-wheel dimensionally stable that processes, high conformity, reliable operation, long service life.
The purpose of this utility model is achieved in that free wheel device star-wheel middle part is the star-wheel mesopore, three work profiles are arranged on the star-wheel trisection angle, ipsilateral is established knock hole in three work profile grooves, star-wheel work profile equates with the lift range value increment on the angle, adopt plane spiral of Archimedes type structure, profile line style agenda is ρ=ρ
0+ δ. θ ρ-polar angle is the theory of θ, extreme radius; ρ
0-theoretical principle extreme radius;
The theoretical increment at δ-extreme value diagonal angle; θ-polar angle, ρ＞ρ
0The time, θ be on the occasion of;
ρ＜ρ
0The time, θ is a negative value.
Below in conjunction with accompanying drawing structure of the present utility model is elaborated:
The star-wheel that Fig. 1 designs for the utility model is used for structure and the working principle schematic representation on the free wheel device;
Fig. 2 is the sectional view of Fig. 1;
The spiral of Archimedes type star-wheel partial schematic diagram that Fig. 3 designs for the utility model.
Referring to Fig. 1 and Fig. 2, the star-wheel of the utility model design is used for free wheel device, and star-wheel 7 middle parts are star-wheel mesopore 12, has the interior ipsilateral of 2, three work of three work profiles profile 2 grooves to establish knock hole 11 on the trisection angle.When star-wheel 7 is installed in the free wheel device, packs in the knock hole 11 of star-wheel 7 and stop up 8, press-fit shell 4 again, pack into successively in the knock hole 11 spring 10 and ejector pin 9.The work roller 1 of packing in the work profile 2 of star-wheel 7 is connected with wheel hub 5 with screw 6 again, at last and starter receiver 3 combine the formation free wheel device.Its working principle is: when starter receiver 3 is packed wheel hub 5 outside into, work roller 1 is shifted onto the small end of star-wheel work profile 2, under the effect of spring 10 and starter receiver 3 and 1 frictional force of work roller, work roller 1 is by firmly wedging, make starter receiver 3, work roller 1 and wheel hub 5 be integral rotation, drive crankshaft rotating through wheel hub 5 keys.The engine start rear motor stops operating, but along with engine speed improves, motor drives wheel hub 5 and rotates together, wheel hub 5 fuses with star-wheel 7, so make star-wheel 7 rotating speeds also fast equally with the rotating speed of wheel hub 5, work roller 1 overcomes the big end that spring 10 elastic force are pulled to star-wheel work profile 2, forms the gap between work roller 1 and starter receiver and no longer contacts, starter receiver 3 is not rotated and also no longer rotation of motor, free wheel device has reliable startup, rapid characteristics of throwing off like this.The work profile 2 of star-wheel as shown in Figure 3, this work profile 2 is to design with the spiral of Archimedes type.Its math equation is ρ=ρ
0+ δ. θ, according to each known parameters on Fig. 3, that is: work roller 1 diameter D
0, starter receiver 3 diameter phi d, the extreme radius ρ of work roller 1 when being at the highest notch
Max, polar angle θ
Max, can calculate ρ
0And δ, obtain a spiral of Archimedes type star-wheel work profile.
The utlity model has following advantage:
1. star-wheel working surface simplicity of design does not need can finish through overtesting and complicated calculating;
2. star wheel structure is simple, without any need for parts, only needs to determine ρ0And δ, can design and Produce this star-wheel.
3. because the line style equation has been arranged, make processing technology simple, easy, add the chi in the technology process Very little control and measurement is convenient, the star-wheel reliable operation of producing, and the life-span is long.
4. be applicable to batch production, be convenient to standardization and seriation.
Claims (1)
1. free wheel device star-wheel, the star-wheel middle part is the star-wheel mesopore, three work profiles are arranged on the star-wheel trisection angle, ipsilateral is established knock hole in three work profile grooves, it is characterized in that star-wheel work profile equates with the lift range value increment on the angle, adopt plane spiral of Archimedes type structure, profile line style equation is ρ=ρ
0+ δ. θ
ρ-polar angle is the theoretical extreme radius of θ; ρ
0-theoretical principle extreme radius;
The theoretical increment at δ-extreme value diagonal angle; θ-polar angle, ρ＞ρ
0The time, θ be on the occasion of;
ρ＜ρ
0The time, θ is a negative value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96224212 CN2321973Y (en) | 1996-12-13 | 1996-12-13 | Planetary wheel for freewheel clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96224212 CN2321973Y (en) | 1996-12-13 | 1996-12-13 | Planetary wheel for freewheel clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2321973Y true CN2321973Y (en) | 1999-06-02 |
Family
ID=33903256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96224212 Expired - Fee Related CN2321973Y (en) | 1996-12-13 | 1996-12-13 | Planetary wheel for freewheel clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2321973Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100339610C (en) * | 2003-12-15 | 2007-09-26 | 株式会社利富高 | One-way clutch |
-
1996
- 1996-12-13 CN CN 96224212 patent/CN2321973Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100339610C (en) * | 2003-12-15 | 2007-09-26 | 株式会社利富高 | One-way clutch |
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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 |