CN2725159Y

CN2725159Y - Reciprocating pedal type bicycle speed changing handlebar

Info

Publication number: CN2725159Y
Application number: CN 200420034738
Authority: CN
Inventors: 徐模宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-05-14
Filing date: 2004-05-14
Publication date: 2005-09-14
Anticipated expiration: 2014-05-14

Abstract

The utility model discloses the speed changing handle of a reciprocating pedal type dual-flywheel bicycle. A rotary handle seat (1) on which a ratchet ring (7) is provided is fixed on a bicycle handle tube (3), and a wire cable eduction tube (4) and a locating sleeve (5) are arranged on the left end of the rotary handle seat (1). A middle rotary handle (8) is in running fit with the rotary handle seat (1), and a guide groove (9) which is wound by a wire cable (21) and a groove (15) which is penetrated by a pawl sheet (14) are arranged on the left end of the middle rotary handle. The side wall (10) of the guide groove (9) is connected with positioning screws (23) positioned in the axial groove (22) of a rotary handle (13), a radial compression spring (12) is installed in the radial hole (11) of the side wall (10), the upper end of the spring (12) contacts with the wall of the rotary handle (13), and the lower end of the spring contacts with the upper end of the pawl sheet (14) positioned in the hole (11). A groove whose slope (17) fits a cylinder ring (18) on the rotary handle (13) is arranged on the pawl sheet (14), and the rotary handle (13) is sheathed in the middle rotary handle. An axial compression spring (20) is provided between the side wall (10) of the guide groove (9) and the side wall of the rotary handle (13), one end of the wire cable (21) is connected with a middle rotary handle (8), and the other end of the wire cable (21) is connected with the speed changing wire cables of the left and the right speed changer of the bicycle.

Description

Reciprocating footoperated bicycle with dual flywheels derailleur handle

Technical field:

The utility model is relevant with the bicycle shift handlebar.

Background technology:

Existing bicycle shift handlebar comes transmission of drive force to give change-speed box by large and small gear meshing, because the required acceleration propulsive effort of the change-speed box of reciprocating footoperated bicycle with dual flywheels is bigger, causes the counter-rotating of variable gear easily and the speed changing function of change-speed box was lost efficacy.

The utility model content:

The purpose of this utility model provides a kind of simple in structure, speed change failure-free reciprocating footoperated bicycle with dual flywheels derailleur handle.

The utility model is achieved in that

The utility model is lived footoperated bicycle with dual flywheels derailleur handle again, revolve seat 1 is fixed on the bicycle handle bar pipe 3, ratchet ring 7 is arranged on it, its left end has steel cable fairlead 4 and locating bush 5, in revolve 8 with revolve the seat 1 normal-running fit, its left end has the groove 15 that passes around the guide groove 9 of steel cable 21 and ratchet 14, the sidewall 10 of guide groove 9 is connected with fixing screw 23, fixing screw 23 is positioned at the axial groove 22 that revolves 13, in the radial hole 11 of sidewall 10 radial compression spring 12 is housed, spring 12 upper ends contact with the wall that revolves 13, the last end in contact that is positioned at hole 11 of lower end and ratchet 14, ratchet 14 has groove 16, the inclined-plane 17 of groove 16 cooperates with the tube circle 18 that revolves on 13, revolves to revolve in being enclosed within on 8 the sidewall 10 of guide groove 9 and revolving axial compression spring 20 is arranged between 13 the sidewall to 13, one end of steel cable 21 with in revolve and be connected the other end and a bicycle left side to 8, the speed change steel cable of right change-speed box connects.

Steel cable joint 24 is positioned at the hole of the sidewall 10 of grooving 9.

Ratchet 14 is a plurality of, is distributed in the periphery of ratchet ring 7.

Radial compression spring 12 is cylindrical, and axial compression spring 20 is a V-arrangement.

Have fixing screw 2 pass hole 25 will revolve the seat 1 be fixed on the pipe 3 on, the head of fixing screw 2 is arranged in the groove 26 that revolves 8.

When the utility model quickens in drive speed transmission, holds is revolved clickwise, ratchet is rotated on revolving the ratchet on the seat and can not reversed greatly owing to the application force of change-speed box, speed change is reliable, hold when slowing down and revolve putting thrust left a little, ratchet and ratchet ring are thrown off, and inhour is revolved getting final product.

Description of drawings:

Fig. 1 is the utility model constructional drawing.

Fig. 2 is the birds-eye view of Fig. 1.

Fig. 3 is the A-A cutaway view of Fig. 1.

Fig. 4 is the B-B cutaway view of Fig. 3.

Fig. 5 is a ratchet pawl constructional drawing.

Fig. 6 is the right elevation of Fig. 5.

Fig. 7 is axial compression spring structure figure.

Fig. 8 is the right elevation of Fig. 7.

The specific embodiment:

The utility model by revolve seat 1, in revolve 8, revolve 13, ratchet 14, cylindroid helical-coil compression spring 12, V-arrangement spring leaf 20, fixing screw 23,2, steel cable 21, steel rope sleeve 6, steel cable locating bush 5 form.

Revolve seat 1 is fixed on the handlebar tube 3 by fixing screw 2, its left end has steel cable fairlead 4 and steel cable locating bush 5, in revolve and have 8 left end the guide groove 9 around steel cable, the right of guide groove 9 that the groove of a plurality of installation ratchet 14 and the circular hole 11 of dress cylindroid helical-coil compression spring 12 are arranged.Right-hand member has inner groove, revolves in 2 permissions of fixing screw to do circumference rotation to 8 and can not produce and move axially.In revolve and install ratchet 14 to 8, cylinder stage clip 12, behind the V-arrangement stage clip 20 again revolve revolve in being enclosed within 13 on 8 with fixing screw 23 location, revolve 13 just can only in produce on revolving 8 and move axially, revolve when pushing away 13 left if hold, revolve the end face of the tube circle 18 on 13 just mobile on the inclined-plane 17 of ratchet 14, thereby lifting ratchet and ratchet breaks away from, also compressed the cylindrical screw stage clip on the ratchet, the end face that revolves handle has simultaneously also compressed the V-arrangement spring leaf, when unclamping thrust, to revolve under the V-arrangement action of the spring, resetting, ratchet is also depressed and ratchet engagement by the cylinder stage clip.

Steel cable is blocked by the steel cable joint passing the back the hole of an end from revolving, steel cable 21 is walked around again through the steel cable locating bush through guide groove 9, the steel cable sleeve pipe up to the back about two speed change steel cables connect firmly together, hold during acceleration and revolve just, hold during deceleration to revolve and thrown off back inhour rotation just having put thrust ratchet and ratchet left a little clickwise.

Claims

1, live footoperated bicycle with dual flywheels derailleur handle again, it is characterized in that revolving seat (1) is fixed on the bicycle handle bar pipe (3), ratchet ring (7) is arranged on it, its left end has steel cable fairlead (4) and locating bush (5), in revolve (8) with revolve the seat (1) normal-running fit, its left end has the groove (15) that passes around the guide groove of steel cable (21) (9) and ratchet (14), the sidewall (10) of guide groove (9) is connected with fixing screw (23), fixing screw (23) is positioned at and revolves the axial groove of (13) (22), in the radial hole (11) of sidewall (10) radial compression spring (12) is housed, spring (12) upper end with revolve the handle wall of (13) and contact, the last end in contact that is positioned at hole (11) of lower end and ratchet (14), ratchet (14) has groove (16), the inclined-plane (17) of groove (16) cooperates with the tube circle (18) that revolves on (13), revolve (13) are revolved in being enclosed within on (8), the sidewall (10) of guide groove (9) and revolving axial compression spring (20) being arranged between the sidewall of (13), one end of steel cable (21) with in revolve (8) be connected the other end and a bicycle left side, the speed change steel cable of right change-speed box connects.

2, derailleur handle according to claim 1 is characterized in that steel cable joint (24) is positioned at the hole of the sidewall (10) of grooving (9).

3, derailleur handle according to claim 1 is characterized in that ratchet (14) for a plurality of, is distributed in the periphery of ratchet ring (7).

4, derailleur handle according to claim 1 is characterized in that radial compression spring (12) for cylindrical, and axial compression spring (20) is a V-arrangement.

5, derailleur handle according to claim 1, (2) are passed hole (25) and will be revolved seat (1) is fixed on the pipe (3) to it is characterized in that fixing screw is arranged, and the head of fixing screw (2) is arranged in and revolves the groove of (8) (26).