CN2223250Y - Automatic internal speed variator of real axle for bicycle - Google Patents
Automatic internal speed variator of real axle for bicycle Download PDFInfo
- Publication number
- CN2223250Y CN2223250Y CN 95211007 CN95211007U CN2223250Y CN 2223250 Y CN2223250 Y CN 2223250Y CN 95211007 CN95211007 CN 95211007 CN 95211007 U CN95211007 U CN 95211007U CN 2223250 Y CN2223250 Y CN 2223250Y
- Authority
- CN
- China
- Prior art keywords
- helical teeth
- circle
- torsion
- teeth circle
- speed change
- 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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- Structure Of Transmissions (AREA)
Abstract
The utility model relates to the automatic internal speed variator of a rear axle for bicycles. The automatic speed variation makes use of a pair of skewed teeth engaged together which generate axial force in relative rotation to control an overrunning clutch, and thus the drive ratio of the output and the input is changed; simultaneously, an input shaft adopts the steel ball type overrunning clutch, and no rolling shifting and idle shifting appear in the process of speed variation. Having simple structure, the speed variator is smaller than any non-automatic internal speed variator. In addition, the utility model has the advantages of reliable motion, firmness and durability, rationality in design during frequent speed variation. The speed variation of the speed variator can be also controlled by hands.
Description
The utility model belong to a kind of can be manual, automatically, the automatic internal speed changer of dual-purpose bicycle rear axle.Because of structural reason, general internal speed variator for cycle rear axle, no matter be automatic and nonautomatic, volume is bigger, and intensity is low, poor reliability directly influences the practical requirement of bicycle.The change-speed box that the utility model proposes has simple in structure, reliable in action, volume is little, intensity is high, and does not have the characteristics such as shelves, neutral gear of rolling.
Accompanying drawing is the scheme drawing of the automatic internal speed changer of bicycle rear axle that the utility model proposes.
Wherein: 1-shell; 2-satellite gear; 3-planet wheel body; 4-internal tooth wheel body; 5-torsion circle; 6-torsion helical teeth circle; 7-speed change helical teeth circle; 8-movable spline body; 9-long ratchet; 10-handle ratchet wheel circle; 11-push rod; 17-solar shaft.
Power is from movable spline body (8) input, and shell (1) is exported. Movable spline body (8) External splines and the engagement of the internal spline of speed change helical teeth circle (7); Torsion helical teeth circle (6) is cover On movable spline body (8), the end of torsion helical teeth circle (6) and speed change helical teeth circle (7) Face has helical teeth, is meshed under spring force; External splines and the torsion of torsion helical teeth circle (6) The internal spline engagement of circle (5); Torsion circle (5) surface uniform several have steel ball groove and Internal tooth wheel body (4) consists of the overdrive clutch structure. Speed change is with push rod (11) control movable artificial flower Key body (8) slip displacement realizes. Speed is divided into fourth gear: slow shelves, automatic transmission, middle-grade, Fast shelves.
Movable spline body (8) is when slow P PARK Position P, and speed change helical teeth circle (7) makes long ratchet (9) income on the internal tooth wheel body (4), internal tooth wheel body (4) and be with the overriding clutch of shell (1) formation of handle ratchet wheel circle (10) to separate.During movable spline body (8) rotation, the overriding clutch that the overriding clutch that torsion circle (5) and internal tooth wheel body (4) constitute, planet wheel body (3) and shell (1) constitute, combination respectively; Internal tooth wheel body (4) main gear, planet wheel body (3) are by transmission, and shell (1) slows down and rotates.
Movable spline body (8) is when the automatic transmission position, speed change helical teeth circle (7) is moved to the left a position simultaneously, long ratchet (9) on the internal tooth wheel body (4) is ejected, contact with the handle ratchet wheel circle (10) on the shell (1), constitute overriding clutch, when movable spline body (8) rotates, when shell (1) has certain big resistance, speed change helical teeth circle (7) and torsion helical teeth circle (6) relatively rotate the angle of a qualification, the axial force that produces moves right speed change helical teeth circle (7), long ratchet (9) income on the internal tooth wheel body (4) is separated with interior handle ratchet wheel circle (10), and shell (1) slows down and rotates; The shell resistance is reduced to one regularly, and speed change helical teeth circle (7) resets under spring force-long ratchet (9) ejection.In order to reduce the friction force with torsion helical teeth circle (6) helical teeth, garden shape pit is arranged on the pitch face of speed change helical teeth circle (7), steel ball is arranged in the pit.
Movable spline body (8) is when middle P PARK Position P, and speed change helical teeth circle (7) is again to moving left to a position of bumping less than long ratchet (9), so come what may, shell (1) middling speed all the time rotates.
Movable spline body (8) when fast P PARK Position P, engagement in the spline of top spline and planet wheel body (3), planet wheel body (3) main gear, internal tooth wheel body (4) is by transmission, under the overdrive clutch effect, planet wheel body (3) separates with shell (1), shell (1) fast rotational.
Claims (3)
1. automatic internal speed changer of bicycle rear axle, form by shell (1), planet wheel body (3), internal tooth wheel body (4), torsion circle (5), torsion helical teeth circle (6), speed change helical teeth circle (7), movable spline body (8), long ratchet (9), handle ratchet wheel circle (10), push rod (11), solar shaft parts such as (12), it is characterized in that: be with one on the movable spline body (8) and can and mesh a speed change helical teeth circle (7) at the torsion helical teeth circle (6) of limited range rotation; The end face of torsion helical teeth circle (6) and speed change helical teeth circle (7) has helical teeth, is meshing with each other under spring force, and garden shape pit is arranged on the pitch face of speed change helical teeth circle (7), and steel ball is arranged in the pit, can produce when both relatively rotate to move axially.
2. according to the automatic internal speed changer of right 1 described bicycle rear axle, it is characterized in that: the torsion circle (5) of steel ball groove and the overdrive clutch structure that internal tooth wheel body (4) constitutes are arranged by uniform several in surface.
3. according to right 1 or the automatic internal speed changer of 2 described bicycle rear axles, it is characterized in that: by the controllable over run clutch structure of movable spline body (8), torsion helical teeth circle (6), fast helical teeth circle (7), long ratchet (9), handle ratchet wheel circle (10), shell (1), formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95211007 CN2223250Y (en) | 1995-05-11 | 1995-05-11 | Automatic internal speed variator of real axle for bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95211007 CN2223250Y (en) | 1995-05-11 | 1995-05-11 | Automatic internal speed variator of real axle for bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2223250Y true CN2223250Y (en) | 1996-03-27 |
Family
ID=33861584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95211007 Expired - Fee Related CN2223250Y (en) | 1995-05-11 | 1995-05-11 | Automatic internal speed variator of real axle for bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2223250Y (en) |
-
1995
- 1995-05-11 CN CN 95211007 patent/CN2223250Y/en not_active Expired - Fee Related
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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 |