CN208993864U - Lever-rack drives rear wheel bicycle - Google Patents
Lever-rack drives rear wheel bicycle Download PDFInfo
- Publication number
- CN208993864U CN208993864U CN201821672062.7U CN201821672062U CN208993864U CN 208993864 U CN208993864 U CN 208993864U CN 201821672062 U CN201821672062 U CN 201821672062U CN 208993864 U CN208993864 U CN 208993864U
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- CN
- China
- Prior art keywords
- lever
- arc
- pedal
- shaped rack
- ratchet
- 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.)
- Withdrawn - After Issue
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Abstract
Lever-rack drives rear wheel bicycle, belongs to bicycle field, mechanism body is lever, is fixed on vehicle frame by the bearing as fulcrum.Strip pedal and arc-shaped rack are separately fixed at lever front and rear ends, trample strip pedal with foot, transmit driving force by lever, arc-shaped rack, instead of traditional chain drive, simplify transmittance process.Ratchet central part, rear axle, rear-wheel are fixedly connected into same rotary body, arc-shaped rack and ratchet internal messing, this transfer mode makes to scrunch arm of force maximization, improves pedaling efficiency, foot is moved forward and backward the size that can arbitrarily change foot pedal arm force on strip pedal.
Description
Technical field
Bicycle field.
Background technique
Ordinary bicycle is turned by pedal, chain wheel, chain, flywheel band motor car wheel are run.Pedal crank is moving in a circle
When, the driving arm of force does descending, ascending mechanical periodicity with circular motion.Arm of force maximum value is kept, can improve and scrunch
Sport efficiency, this needs to improve driving method.Chain drive is but also transmission system complicates.
Utility model content
The purpose of this utility model is to provide a kind of lever-racks to drive rear wheel bicycle, lever, arc-shaped rack and list
To the mating device respectively of gear in bicycle two sides, arc-shaped rack and ratchet internal messing.Arc-shaped rack and strip pedal are solid
Surely lever both ends are connected to, lever is fixed on vehicle frame two sides by fulcrum roller, and pedal is stepped on strip pedal, can front and back shifting
Dynamic change scrunches the arm of force.
The utility model consists of two parts.First is that rotating part, is fixed together by ratchet, rear axle and wheel.
Second is that scrunching part, arc-shaped rack and strip pedal are fixed on lever both ends.
Two ratchet central parts that the utility model is related to are linked together with key and rear axle, rear-wheel, become same rotation
Swivel, when ratchet rotates forward, gear core piece is also rotated with, and is idle running, gear when ratchet back rotation
Central part is motionless, and when two side gear interworking does not interfere with each other.
Lever is connected on vehicle frame by the bearing as fulcrum, arc-shaped rack and ratchet internal messing.It was driving
Cheng Zhong rides on strip pedal, and lever one end where pedal is downward, and lever one end where arc-shaped rack is upward, rack gear
Wheel is driven by the ratchet being engaged with.Need foot that can be moved forward and backward on strip pedal according to force, thus
Change the length of foot pedal arm force.The mode of this arc-shaped rack and ratchet internal messing ensure that bicycle is obtained by gear
The driving arm of force obtained is maximum.Lever needs to move within the specified scope, so being provided with flexible limitation bar, avoids arc-shaped gear
Item is detached from the engagement range with gear.Strip pedal moves downward the gravity moved upwards by pedal force by arc-shaped rack.
Arc-shaped rack length involved in this programme is suitable with the primary foot-operated stroke of rack gear.
The advantages of this utility model is: 1, car remains that maximum value is constant by the arm of force that gear obtains, and mentions
High stepping movement efficiency.2, it is long, high-efficient to depress pedal force process for single.3, strip pedal is fixed on lever, and foot is being stepped on
It is moved forward and backward on plate, can arbitrarily change and scrunch the arm of force.4, car two sides arc-shaped rack moves up and down, respectively independent, is independent of each other.
Detailed description of the invention
Fig. 1 is lever-rack driving rear wheel bicycle structure chart.
Specific embodiment
Below with reference to Fig. 1 and embodiment, the utility model is described in further detail.
The utility model major part is arc-shaped rack 3, lever 1 and strip pedal 2 is mating is fixed together, mating respectively
Device is fixed on vehicle frame in bicycle two sides, lever 1 by fulcrum roller 4, arc-shaped rack 3 and ratchet external tooth part 5
Internal messing, ratchet central part 6, rear axle 7 and the rear-wheel of car two sides are fixedly connected into a rotary body, pass through bearing
9 are fixed on vehicle frame.Ratchet external tooth part 5 forces in gear core piece 6 to driving bicycle when rotating forward, to
After be freely rotatable.This effect of ratchet, enables the arc-shaped rack of car two sides to work independently, is independent of each other.
Depressing strip pedal 2 drives lever 1 and arc-shaped rack 3 to drive ratchet 5, and driving car moves ahead.Car two sides
Rack gear interworking persistently drives car to move ahead.When the operation of strip pedal 2 to low level, the other end touching elasticity limitation bar of lever
10, lever starts to reset under the action of 3 gravity of elastic force and arc-shaped rack of elasticity limitation bar 10, then carries out next row
Journey.The lever alternate run of bicycle two sides drives bicycle.Strip pedal 2 is fixed on 1 front end of lever, and pedal bottom surface is equipped with
Spring 8, impact force when being scrunched downwards since highest order for buffering between gear, but also it is smooth soft to scrunch process.Make
Foot position can be moved forward and backward by being advantageous in that with strip pedal 2, to change the size of foot pedal arm force.
Claims (1)
1. a kind of lever-rack drives rear wheel bicycle, it is characterised in that: driving mechanism is by lever (1), arc-shaped rack (3), length
Pedal (2) and ratchet composition, lever (1) are fixed on vehicle frame two sides by fulcrum roller (4), and arc-shaped rack (3) is fixed
In the rear end of lever (1), arc-shaped rack (3) and ratchet (5) internal messing, ratchet central part (6) and rear axle (7) key
Connection, rear axle (7) and rear-wheel are same rotary body, and rear axle (7) is fixed on vehicle frame by bearing (9), and lever (1) front end is fixed
There are strip pedal (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821672062.7U CN208993864U (en) | 2018-09-29 | 2018-09-29 | Lever-rack drives rear wheel bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821672062.7U CN208993864U (en) | 2018-09-29 | 2018-09-29 | Lever-rack drives rear wheel bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208993864U true CN208993864U (en) | 2019-06-18 |
Family
ID=66802793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821672062.7U Withdrawn - After Issue CN208993864U (en) | 2018-09-29 | 2018-09-29 | Lever-rack drives rear wheel bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208993864U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113212630A (en) * | 2021-05-28 | 2021-08-06 | 徐辅成 | Lever speed-changing bicycle |
-
2018
- 2018-09-29 CN CN201821672062.7U patent/CN208993864U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113212630A (en) * | 2021-05-28 | 2021-08-06 | 徐辅成 | Lever speed-changing bicycle |
| CN113212630B (en) * | 2021-05-28 | 2024-05-31 | 徐辅成 | Lever speed-changing bicycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190618 Effective date of abandoning: 20200407 |