CN207500409U

CN207500409U - A kind of gear for gear driving bicycle

Info

Publication number: CN207500409U
Application number: CN201720701433.9U
Authority: CN
Inventors: 沙海
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-06-16
Filing date: 2017-06-16
Publication date: 2018-06-15
Anticipated expiration: 2027-06-16

Abstract

The utility model discloses a kind of gears for gear driving bicycle, including being used for the first babinet of power input and the second babinet of power output, first babinet is equipped with clutch shaft bearing and second bearing, second babinet is equipped with 3rd bearing, the clutch shaft bearing is equipped with several empty set helical gears and the clutch with empty set helical teeth the first spline fitted of wheel side, the second bearing is equipped with the transmission helical gear being engaged with empty set helical gear, and first babinet is connected to the second babinet by transmission shaft.The gear for gear driving bicycle of the utility model, dynamic steel wire pull line is moved with the hand by hand and drives shift fork, control the second spline of clutch respectively with the first spline engagement of two groups of free gears or detaching, input torque is transmitted to 3rd bearing through being connected to two groups of angular wheel components of transmission shaft again, and then it is transmitted to the trailing wheel being connect with 3rd bearing, realize speed change, simple in structure and cost is relatively low.

Description

A kind of gear for gear driving bicycle

Technical field

The utility model is related to a kind of gears, and in particular to a kind of gear-driven gear.

Background technology

At present, it since the durability of gear driving bicycle protrudes, is widely deployed on public bicycles, but gear Driving bicycle generally can not speed change, the variable-speed motor of existing gear driving bicycle not strong for the applicability of surface conditions The mostly of structure use are three fast gears in planetary gear, and the manufacturing cost of the mechanism is high so that it can not be promoted in public affairs Altogether on bicycle, and three gear speed changes slightly aobvious burden for daily ride, it is unfavorable for promoting being used on public bicycles.

Invention content

Goal of the invention：The purpose of this utility model is that it in view of the deficiencies of the prior art, provides a kind of for gear drive The gear of bicycle realizes gear driving bicycle two stage speed change, and reduces production cost.

Technical solution：A kind of gear for gear driving bicycle described in the utility model, is moved including being used for First babinet of power input and the second babinet of power output, first babinet is equipped with clutch shaft bearing and second bearing, described Second babinet is equipped with 3rd bearing, and the clutch shaft bearing is equipped with several empty set helical gears and is spent with empty set helical teeth wheel side first The clutch of key cooperation, the second bearing are equipped with the transmission helical gear being engaged with empty set helical gear, first babinet Second babinet is connected to by transmission shaft, the second bearing passes through conical tooth with transmission shaft and transmission shaft with 3rd bearing Wheel assembly is driven.

Preferably, the empty set helical gear is equipped with two groups.

Preferably, the clutch sleeve is set on the spline part in the middle part of clutch shaft bearing, and the clutch both ends of the surface are equipped with and sky The second spline of helical teeth the first spline fitted of wheel side is covered, shift fork is clamped in the middle part of the clutch, shift fork drives clutch edge Spline part moves axially, and respectively with the first spline engagement of its both sides or detaching change gearratio.

Preferably, the shift fork tail end is connected with movable block, and the movable block is slided in the sliding slot of the first babinet, institute It states and spring is equipped between movable block one end and sliding slot top inner wall, which is additionally provided with the steel wire pull line for being pierced by sliding slot, the steel Silk bracing wire is connected to hand and dials.

Preferably, the angular wheel component includes the angular wheel of two Vertical Meshings.

Advantageous effect：A kind of gear for gear driving bicycle of the utility model moves with the hand dynamic steel wire by hand Bracing wire drives shift fork, and the second spline of clutch is controlled with the first spline engagement of two groups of free gears or detaching, to change respectively Input torque is transmitted to 3rd bearing, Jin Erchuan by gear ratio, then two groups of angular wheel components through being connected to transmission shaft The trailing wheel being connect with 3rd bearing is delivered to, realizes speed change, simple in structure and cost is relatively low.

Description of the drawings

Fig. 1 is the SolidWorks modeling figures of the utility model gear and bearing fit；

Sectional view when Fig. 2 is the utility model the first babinet gearshift condition；

Fig. 3 is sectional view when the first babinet of the utility model uses upward slope gear；

Fig. 4 is sectional view when the first babinet of the utility model uses level road gear；

Fig. 5 is the sectional view of the second babinet of the utility model.

Specific embodiment

Technical solutions of the utility model are described in detail below, but the scope of protection of the utility model is not limited to The embodiment.

As shown in Figures 1 to 5, a kind of gear for gear driving bicycle of the utility model, including being used for First babinet 1 of power input and the second babinet 2 of power output, the first babinet 1 are equipped with clutch shaft bearing 3 and second bearing 4, the Two babinets 2 be equipped with 3rd bearing 5, clutch shaft bearing 3 be equipped with two groups of empty set helical gears 61,62 and with 61,62 side of empty set helical gear The clutch 18 that the first spline of face 71,72 coordinates, it is oblique that second bearing 4 is equipped with the transmission being engaged with empty set helical gear 61,62 Gear 91,92, the first babinet 1 are connected to the second babinet 2, second bearing 4 and transmission shaft 10 and transmission shaft by transmission shaft 10 10 are driven with 3rd bearing 5 by angular wheel component 111,112, and clutch 18 is sheathed on the spline at 3 middle part of clutch shaft bearing Portion 19,18 both ends of the surface of clutch are equipped with the second spline 121 coordinated with 61,62 the first spline of side 71,72 of empty set helical gear, 122, the middle part of clutch 18 is clamped with shift fork 13, and shift fork 13 drives clutch 18 to be moved axially along spline part 19, and respectively with its The engagement of the first spline 71,72 or separation of both sides change gearratio, and 13 tail end of shift fork is connected with movable block 14, and movable block 14 slides In the sliding slot 15 of the first babinet 1, spring 16 is equipped between 15 top inner wall of 14 one end of movable block and sliding slot, which also sets There is the steel wire pull line 8 for being pierced by sliding slot 15, steel wire pull line 8 is connected to hand and dials 17, and angular wheel component 111,112 includes two vertically The angular wheel of engagement, in use, in the state of initial level road, spring 16 is in relaxation state, clutch 18 and one of them Empty set helical gear 61 engages, and the transmission helical gear 91 that the empty set helical gear 61 drive engages simultaneously drives 4 turns of second bearing Dynamic, second bearing 4 drives 10 one end of transmission shaft to rotate through angular wheel component 111, and the other end of transmission shaft 10 passes through conical tooth Input torque is transmitted to 3rd bearing 5 by wheel assembly 112, and then drives trailing wheel connected to it, and when going up a slope, 17 are dialled by hand Steel wire pull line 8 is pulled, steel wire pull line 8 drives movable block 14 to be moved along sliding slot 15, and then shift fork 13 is driven to move, and shift fork 13 drives Clutch 18 is moved axially along spline part 19, and clutch 18 is engaged with another empty set helical gear 62, and spring 16 is in pressure at this time Contracting state, after loosening hand and dialling 17, under the action of 16 elastic force of spring, clutch 18 returns to initial position, due to empty set helical teeth Wheel 61,62 is different with the specification of transmission helical gear 91,92 being engaged, so as to fulfill transmission is changed during cycling Than achieving the effect that variable block, the gear change operation of the gear of the utility model is similar to the gear shifting action of daily derailleur, no It needs to carry out new learning process, is more suitable for promoting, and cost is lower.

As described above, although the utility model has been represented and described with reference to specific preferred embodiment, it must not It is construed to the limitation to the utility model itself.In the spirit and scope for not departing from the utility model that appended claims define Under the premise of, it can various changes can be made in the form and details to it.

Claims

1. a kind of gear for gear driving bicycle, it is characterised in that：The first babinet including being used for power input With the second babinet of power output, first babinet is equipped with clutch shaft bearing and second bearing, and second babinet is equipped with third Bearing, the clutch shaft bearing are equipped with several empty set helical gears and the clutch with empty set helical teeth the first spline fitted of wheel side, The second bearing is equipped with the transmission helical gear being engaged with empty set helical gear, and first babinet is connected to by transmission shaft Second babinet, the second bearing are driven with transmission shaft and transmission shaft with 3rd bearing by angular wheel component.

2. the gear according to claim 1 for gear driving bicycle, it is characterised in that：The empty set helical teeth Wheel is equipped with two groups.

3. the gear according to claim 2 for gear driving bicycle, it is characterised in that：The clutch sleeve Spline part in the middle part of clutch shaft bearing, the clutch both ends of the surface are equipped with the with empty set helical teeth the first spline fitted of wheel side Two splines are clamped with shift fork in the middle part of the clutch, and shift fork drives clutch to be moved axially along spline part, and respectively with its both sides The first spline engagement or separation change gearratio.

4. the gear according to claim 3 for gear driving bicycle, it is characterised in that：The shift fork tail end Movable block is connected with, the movable block is slided in the sliding slot of the first babinet, described movable block one end and sliding slot top inner wall Between be equipped with spring, which is additionally provided with the steel wire pull line for being pierced by sliding slot, and the steel wire pull line is connected to hand and dials.

5. the gear according to claim 1 for gear driving bicycle, it is characterised in that：The angular wheel Component includes the angular wheel of two Vertical Meshings.