CN104139764A

CN104139764A - Speed changer adjusting rack for variable-speed bicycle

Info

Publication number: CN104139764A
Application number: CN201410403473.6A
Authority: CN
Inventors: 王禇俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-08-18
Filing date: 2014-08-18
Publication date: 2014-11-12
Anticipated expiration: 2034-08-18
Also published as: CN104139764B

Abstract

The invention relates to a speed changer adjusting rack for a variable-speed bicycle. The speed changer adjusting rack for the variable-speed bicycle comprises a chassis, a stand column fixed on the chassis vertically, a cross arm horizontally fixed above the stand column, an upper holding ring, a lower holding ring, a motor 2 fixed on the stand column, a swing rod arranged on the motor and a shifting pole horizontally arranged on the swing rod, wherein the tail ends of the upper holding ring and the lower holding ring are rotationally connected with the front end of the cross arm by a rotating shaft I, the upper holding ring and the lower holding ring are closed to form a clamping hole of which the inner diameter is matched with the outer diameter of a bicycle cross beam, the upper holding ring and the lower holding ring are fixed by a screw, and after the upper holding ring and the lower holding ring clamp the bicycle cross beam, the shifting pole is contacted with a crank at one side. After the clamping hole clamps the bicycle cross beam, the motor rotates to drive the swing rod to rotate, the swing rod enables the shifting pole to do circular arc motion, so that the shifting pole shifts the crank to do circular motion to enable a chain of the bicycle to keep a moving state, and then a user can conveniently and rapidly adjust the speed changer of the bicycle by hands, thus the speed changer of the variable-speed bicycle can be conveniently adjusted, and the efficiency is improved.

Description

Variable speed bicycle change-speed box adjustment rack

Technical field

The present invention relates to variable speed bicycle change-speed box adjustment rack.

Background technology

Along with high-grade derailleur is more and more subject to youthfully to like, increasing youngster selects to ride motion.But the change-speed box of variable speed bicycle need to regularly be adjusted, otherwise just there will be speed change to locate inaccurate problem.But change-speed box need to utilize set screw on screwdriver rotary speed variator on the one hand in the process of adjusting, and also needs on the other hand with the continuous rotating crank of hand, make chain keep state of kinematic motion, when therefore a people operates, there is the inconvenient situation of adjusting.

Summary of the invention

The present invention is in order to overcome the deficiency of above technology, the variable speed bicycle change-speed box adjustment rack that provides a kind of convenience to adjust bicycle speed-varying unit.

The present invention overcomes the technical scheme that its technical matters adopts:

This variable speed bicycle change-speed box adjustment rack, comprise chassis, vertically be fixed on the column on chassis, level is fixed on the transverse arm of column top, tail end by rotating shaft I rotate install with transverse arm front end upper armful ring and lower armful of ring, be fixed on the motor 2 on column, the fork and the level that are installed on motor are installed on the driving lever on fork, the folder hole that after described upper armful of ring and lower armful of ring are closed, formation internal diameter and bicycle crossbeam external diameter match, upper armful of ring and lower armful of ring are fixed by screw, when upper armful ring and lower armful of ring clamp after bicycle crossbeam, described driving lever contacts with a side crank.

For the convenient height that regulates, also comprise along axis direction and be arranged at some teeth on column, rotate and be installed on the fixture block of transverse arm lower end, the block that is arranged at fixture block medial extremity and one end and be fixed on fixture block outside by rotating shaft II, the other end is fixed on the jig arm spring on transverse arm, when in the teeth groove of fixture block between every two teeth, described fixture block medial extremity contacts with block.

The invention has the beneficial effects as follows: clamp after bicycle crossbeam by folder hole, electric machine rotation drives fork to rotate, fork makes driving lever do circular motion, thereby driving lever is stirred crank circular movement, make the chain of bicycle keep state of kinematic motion, now people can conveniently liberate both hands the change-speed box of bicycle is carried out to quick adjustment work, have facilitated derailleur to regulate the step of change-speed box, have improved efficiency.

Brief description of the drawings

Fig. 1 is structural representation of the present invention;

Fig. 2 is arrangement for adjusting height structural representation of the present invention;

In figure, 1. on 2. motor 3. fork 4. driving lever 5. column 6. transverse arms 7. of chassis, embrace ring and embrace ring 9. rotating shaft I 10. folder hole 11. screw 12. tooth 13. teeth groove 14. fixture block 15. rotating shaft II 16. block 17. jig arm springs for 8. times.

Detailed description of the invention

Below in conjunction with accompanying drawing 1, the present invention will be further described for accompanying drawing 2.

As shown in Figure 1, this variable speed bicycle change-speed box adjustment rack, comprise chassis 1, vertically be fixed on the One On The Chassis column 5, level is fixed on the transverse arm 6 of column 5 tops, tail end rotates upper armful ring 7 and the lower armful of ring 8 installed with transverse arm 6 front ends by rotating shaft I 9, be fixed on the motor 2 on column 5, the fork 3 and the level that are installed on motor 2 are installed on the driving lever 4 on fork 3, the folder hole 10 that after upper armful of ring 7 and lower armful of ring 8 are closed, formation internal diameter and bicycle crossbeam external diameter match, upper armful of ring 7 and lower armful of ring 8 are fixing by screw 11, when upper armful ring 7 and lower armful of ring 8 are clamped after bicycle crossbeam, driving lever 4 contacts with a side crank.Clamp after bicycle crossbeam by folder hole 10, motor 2 rotating drive forks 3 rotate, fork 3 makes driving lever 4 do circular motion, thereby driving lever 4 is stirred crank circular movement, make the chain of bicycle keep state of kinematic motion, now people can conveniently liberate both hands the change-speed box of bicycle is carried out to quick adjustment work, have facilitated derailleur to regulate the step of change-speed box, have improved efficiency.

As shown in Figure 2, can also comprise along axis direction and be arranged at some teeth 12 on column 5, rotate and be installed on the fixture block 14 of transverse arm 6 lower ends, the block 16 that is arranged at fixture block 14 medial extremitys and one end and be fixed on fixture block 14 outsides by rotating shaft II 15, the other end is fixed on the jig arm spring 17 on transverse arm 6, when in the teeth groove 13 of fixture block 14 between every two teeth 12, fixture block 14 medial extremitys contact with block 16.Can adjust the height of transverse arm 6 according to different bicycle height, while moving up transverse arm 6, fixture block 14 can move and be rotated and compressed jig arm spring 17 simultaneously by rotating shaft II 15 along tooth 12, after adjusting to the right place, jig arm spring 17 drives fixture block 14 to be placed in corresponding teeth groove 13, now under Action of Gravity Field, teeth groove 13 upper surfaces are close in fixture block 14 lower surfaces, and block 16 is close in its side, therefore realize locking.Easy to adjust quick.In the time that needs release moves down transverse arm 6, manually outwards rotate fixture block 14 it is deviate from from teeth groove 13.

Claims

1. a variable speed bicycle change-speed box adjustment rack, it is characterized in that: comprise chassis (1), vertically be fixed on the column (5) on chassis (1), level is fixed on the transverse arm (6) of column (5) top, tail end by rotating shaft I (9) rotate install with transverse arm (6) front end upper armful ring (7) and lower armful of ring (8), be fixed on the motor (2) on column (5), the fork (3) and the level that are installed on motor (2) are installed on the driving lever (4) on fork (3), after described upper armful of ring (7) and lower armful of ring (8) are closed, form the folder hole (10) that internal diameter and bicycle crossbeam external diameter match, above embrace ring (7) and lower armful of ring (8) fixing by screw (11), when upper armful ring (7) and lower armful of ring (8) clamped after bicycle crossbeam, described driving lever (4) contacts with a side crank.

2. variable speed bicycle change-speed box adjustment rack according to claim 1, it is characterized in that: also comprise along axis direction and be arranged at the some teeth (12) on column (5), rotate the fixture block (14) that is installed on transverse arm (6) lower end by rotating shaft II (15), fixture block (14) outside is fixed in block (16) and one end of being arranged at fixture block (14) medial extremity, the other end is fixed on the jig arm spring (17) on transverse arm (6), in the time that fixture block (14) is arranged in the teeth groove (13) between every two teeth (12), described fixture block (14) medial extremity contacts with block (16).