CN2224788Y - Automatic locking type speed variator of bicycle - Google Patents
Automatic locking type speed variator of bicycle Download PDFInfo
- Publication number
- CN2224788Y CN2224788Y CN 94248660 CN94248660U CN2224788Y CN 2224788 Y CN2224788 Y CN 2224788Y CN 94248660 CN94248660 CN 94248660 CN 94248660 U CN94248660 U CN 94248660U CN 2224788 Y CN2224788 Y CN 2224788Y
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- speed
- speed ratio
- bicycle
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Abstract
The utility model relates to an improved speed changer of automatically adjusting diameter for bicycles, which can be assembled on a middle axle of a bicycle. The utility model can adapt the variation of riding resistance, the diameter of an equivalent chain wheel can be automatically changed by changing pedaling force, thereby, the speed ratio and the bicycle speed can be changed. The equivalent chain wheel can be kept in the same plane to drive with a flywheel. The improved speed changer of automatically adjusting diameter for bicycles is provided with a locking device which can lock the maximum speed ratio of flat ground running and the agile speed ratio after the speed is automatically reduced in uphill by hand operation. The speed ratio is stable, and the pedaling force efficiency is enhanced. The improved speed changer of automatically adjusting diameter for bicycles is agile and can save labor. Users can feel comfortable. The utility model has the advantages of few total parts, simple structure, compact conformation and easy manufacture, and can be used for various novel speed change vehicles or improved common vehicles only by changing a common middle axle.
Description
The automatic path transfer change-speed box of a kind of bicycle lock compact form belongs to derailleur.
The tension side chain of dialling chain device derailleur tilts with speed of a motor vehicle direction to the pulling force of flywheel and force efficiency is pedaled in reduction; Cause chain to break away from sprocket wheel.Existing automatically regulating diameter change-speed box can not be fixed brisk speed ratio effectively, makes speed ratio stable inadequately and reduce and pedal force efficiency.
The purpose of the present utility model provides a kind of improved automatic path transfer change-speed box, and the brisk speed ratio behind slowest ratio that travels in the manual locking level land and the upward slope automatic deceleration is given full play to the advantage of equivalent sprocket wheel and flywheel transmission in same plane; Eliminate chain and break away from sprocket wheel, the bigger force efficiency of pedaling is provided.
The utility model be achieved in that with six radially the groove quadrntnt that moves, be evenly distributed on some equivalent sprocket wheel pitch circles form one " variable-diameter equivalence sprocket wheel ", replace diameter unmodified sprocket wheel, wherein two quadrntnts have the gear teeth, play the chain sprocket drive effect.Control speed change with cam mechanism, change the equivalent chain wheel diameter, elastic positioner is housed on cam, corresponding with knock hole uniform on the circular arc of power wheel, stablize the speed ratio after the speed change balance.The speed ratio latching device is housed on power wheel, corresponding with locking hole uniform on the circular arc of cam, lock brisk speed ratio.
Accompanying drawings concrete structure and variable-speed motion:
Fig. 1 is the change-speed box back view.Power wheel (1) is installed on axis (3) and goes up, transmits crank moment, and six uniform radial slots are arranged, and the steel ball knock hole that is distributed on the same circular arc is arranged, the corresponding speed ratio of each steel ball knock hole.Cliding seat (5) radially groove slides.
Fig. 2 is the change-speed box front view.Cam (9) sky is enclosed within on the axis (3), and locking hole uniform on same circular arc is arranged, and six uniform curved grooves are arranged; Its roller (7) and fan-shaped sprocket (2) or secter pat (4) are assemblied in the two ends of cliding seat (5) respectively.The post that recovery extension spring (6) is contained in power wheel (1) and cam (9) nails on.
Fig. 3 is the A-A cutaway view of elastic positioner on Fig. 2.Sleeve (10) is installed on the cam (9), and stage clip (11) and lock ball (12) are housed in sleeve (10).
Fig. 4 is the B-B cutaway view of latching device on Fig. 1.Being installed on location Xiao (14) on the disk (13) inserts in the assembly opening of power wheel (1), along with power wheel (1) rotates; Corresponding with locking hole uniform on the same circular arc of cam (9).Latching device is connected with rope sheave, handle on the control seat by steel rope.Control seat is fixed on " stem ".When stirring handle downwards location Xiao (14) is inserted in the locking hole of cam (9), the speed change of then eliminating cam mechanism relatively rotates and locks and the corresponding speed ratio of locking hole.
Fig. 5 is the change-speed box general assembly drawing.Transmission components (21) is contained on the axis (3) of vehicle frame (19).Annex is tensioner (16), is contained on the rear axle (15), only selects the flywheel (17) of a specific number of teeth for use.Utilize the pulling force of the torsion spring of tensioner (16), when speed change, make because of increasing the chain that the footpath replenishes or tube reducing is reduced on secter pat (4), to slip over chain (18).Two laterally zygomorphic fan-shaped sprockets (2) alternately transmit the moment of left crank (20) and right crank (8) and chain drive-belt.
Travel in the level land: the riding resistance minimum relies on the suitable big recovery extension spring (6) of rigidity that the equivalent chain wheel diameter is restored to maxim; Lock slowest ratio with latching device.The cyclist controls pedal power and crank rolling velocity and arbitrarily obtains comfortable, the brisk speed of a motor vehicle.
Upslope travels: stir handle and make location Xiao (14) separating lock tieholen on sloping forward direction.Strengthen pedal power along with the increase of riding resistance, when pedal moment overcomes the opposing torque that restores extension spring (6), fan-shaped sprocket (2) and secter pat (4) shrink along the radial slot of power wheel (1) simultaneously by cliding seat (5), reduce the equivalent chain wheel diameter and reduce speed ratio, reduce resisting moment.Stirring handle when feeling brisk downwards makes location Xiao (14) locking cam (9) and locks brisk speed ratio, continuation upward slope.
Ride to the Po Ding level land or slope to the level land that falls: when continuation is trampled forward, upwards stir handle and make location Xiao (14) separating lock tieholen, rely on the moment of restoring extension spring (6) that the equivalent chain wheel diameter is restored to maxim; Stir handle then downwards and make location Xiao (14) locking cam (9) and the locking slowest ratio.
This transmissions improved utility model patent " bicycle 16 fast full automaticity path transfer change-speed boxs ", the patent No. 87209772.2.Latching device is housed, the brisk speed ratio behind slowest ratio that travels in the manual locking level land and the upward slope automatic deceleration; Eliminate to strengthen the power of pedaling and overtake other vehicles or keep away the contradiction that car reduces speed ratio on the contrary, improve and pedal force efficiency and riding safety.Bring into play the advantage of original patent: automatic speed-changing, simple in structure, compact; The tension side chain keeps a straight line transmission, eliminates that chain breaks away from sprocket wheel, to pedal force efficiency higher.
This change-speed box only need change common axis and just can be contained on the various bicycles, selects for use the flywheel of the different numbers of teeth can obtain different speed ranges.Be used for various novel derailleurs or improve common car.Eliminate elastic positioner and can not lock the shortcoming of brisk speed ratio.
Claims (2)
1. automatic path transfer change-speed box of bicycle lock compact form, belong to derailleur, power wheel (1) is arranged, cam (9), cliding seat (5), restore extension spring (6), elastic positioner and annex tensioner (16), six rollers (7) are housed on cliding seat (5) and form two fan-shaped sprockets (2) and four secter pats (4) of an equivalent sprocket wheel, feature of the present utility model is that the latching device that is contained on the power wheel (1) is arranged, corresponding with locking hole uniform on the same circular arc of cam (9), brisk speed ratio behind slowest ratio that travels in the manual locking level land and the upward slope automatic deceleration improves and pedals force efficiency.
2. change-speed box according to claim 1 is characterized in that latching device has disk (13) and is inserted in location Xiao (14) in the assembly opening of power wheel (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94248660 CN2224788Y (en) | 1994-12-23 | 1994-12-23 | Automatic locking type speed variator of bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94248660 CN2224788Y (en) | 1994-12-23 | 1994-12-23 | Automatic locking type speed variator of bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2224788Y true CN2224788Y (en) | 1996-04-17 |
Family
ID=33853524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94248660 Expired - Fee Related CN2224788Y (en) | 1994-12-23 | 1994-12-23 | Automatic locking type speed variator of bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2224788Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105775028A (en) * | 2015-12-19 | 2016-07-20 | 深圳市山顶自行车科技有限公司 | Automatic stepless speed changer |
| CN109159938A (en) * | 2018-09-30 | 2019-01-08 | 刘培珠 | A kind of packing device turned on one's side when television set being avoided to pack |
-
1994
- 1994-12-23 CN CN 94248660 patent/CN2224788Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105775028A (en) * | 2015-12-19 | 2016-07-20 | 深圳市山顶自行车科技有限公司 | Automatic stepless speed changer |
| CN109159938A (en) * | 2018-09-30 | 2019-01-08 | 刘培珠 | A kind of packing device turned on one's side when television set being avoided to pack |
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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 |