CN2422225Y - Ratchet crank mechamism for bicycle - Google Patents
Ratchet crank mechamism for bicycle Download PDFInfo
- Publication number
- CN2422225Y CN2422225Y CN00207394U CN00207394U CN2422225Y CN 2422225 Y CN2422225 Y CN 2422225Y CN 00207394 U CN00207394 U CN 00207394U CN 00207394 U CN00207394 U CN 00207394U CN 2422225 Y CN2422225 Y CN 2422225Y
- Authority
- CN
- China
- Prior art keywords
- crank
- ratchet
- bicycle
- spring
- hand member
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a ratchet wheel and crank mechanism for bicycles. The left end of a middle axle of the bicycle is provided with a ratchet wheel and a crank which form an integral structure, wherein, the inner circle of the crank is sheathed with a ratchet wheel; the centers of the ratchet wheel and the crank at the left end are screwed in the left end of the middle axle of the bicycle through a left hand helix; a left hand disk-shaped helical spring is arranged in a bearing chamber of the middle axle and the ratchet wheel; the outer end of the spring is fixed on a bicycle frame of the rear part of the middle axle or a spring hood by using a fixing clip; the right end of the middle axle of the bicycle is also provided with the ratchet wheel and the crank. A chain disk is pressed on a right hand inner helix axle sleeve; a right hand disk-shaped helical spring is sheathed on a helical sleeve of chain disk components; finally, a crank clip and a spring clip are fixed.
Description
The utility model belongs to the bicycle field, a kind of bicycle ratchet crank mechanism.
The foot-operated crank mechanism of bicycle directly is connected with bicycle middle shaft, steps bicycle crank, and when moving in a circle, the defective of its existence is:
Because when crank moves in a circle, idle time of run is arranged in each cycle twice, the speed of a motor vehicle correspondingly has moderating process twice, when resistance of motion bigger, when force of inertia can not be kept the normal speed of a motor vehicle, must do accelerated movement twice by two cranks with big application force.Especially work as crank and just arrived the meritorious interval of turning round, just need the first acceleration moment of acceleration in time, required meritorious application force maximum has work factor to be in nadir on the contrary, and idle time of run also has influence on the speed of a motor vehicle simultaneously.
In order to overcome above-mentioned defective, the purpose of this utility model is with bicycle crank mechanism, and changing circular movement is crank motion, makes riding of bicycle more laborsaving, quick.
The utility model adopts following technical scheme to realize the foregoing invention purpose:
Described bicycle ratchet crank mechanism, at the left end device of the axis of bicycle with the ratchet crank, just ratchet and crank are structure as a whole, interior circle at crank is set with a ratchet, left end ratchet crank center screws in the bicycle middle shaft left end by sinistral coiling, and adorn a left-hand dish type coil spring between bottom bracket bearing chamber and ratchet, the spring outer end is fixed on the vehicle frame of axis rear portion or on the spring compressor with fixed card, and the inner penetrates in the crank card; Right-hand member also installs the ratchet crank, right-hand member ratchet crank center is the dextrad inside spin, screw in the axis, the chain disk component is to make separately, and chain drum is pressed on the dextrad inside spin axle sleeve, and the chain disk component is screwed in the axis right-hand member, the dextrad dish type being revolved spring housing is contained on the chain disk component screw-casing again, screw in right-hand member ratchet crank then, last fixed crank card and Spring Card, the right-hand member Spring Card is fixed on the chain guard or other proper site.
Described bicycle ratchet crank mechanism is got on or off the bus for convenience or is slided conveniently, on the vehicle frame of both sides, axis rear portion, respectively set up one auxiliary foot-operated, one in left side can be packed up in time spent not, was convenient to the go-cart walking.
The ratchet crank mechanism also can be installed on trishaw, hand-propelled tricycle, wheelchair etc.
The utility model is owing to adopt technical scheme as mentioned above, and it has following preceence:
Crank and internal tooth ratchet are designed to one, connect with axis by ratchet center inside spin, be aided with retracing spring, making crank be moved in a circle to change into by former fork-like farm tool used in ancient China moves reciprocatingly, crank need only be done meritorious motion in the interval of setting, meritorious application force is become continuously by interruption, make bicycle more approach uniform movement, as long as meritorious application force can overcome resistance of motion, can keep the normal speed of a motor vehicle, not only reduce to obtaining the meritorious application force that acceleration/accel consumed, the also corresponding minimizing of idle application force consumption simultaneously, this characteristic is when resistance of motion is big more, and the labor-saving effect is remarkable more.Owing to eliminated idle time of run, under extraneous moving condition same case, when having the labor-saving effect, the speed of a motor vehicle also can be improved, in motion process, and adjust crank traffic coverage at any time, further improving has work factor.
The ratchet crank mechanism also can be installed on trishaw, hand-propelled tricycle, wheelchair etc.
Below in conjunction with the description of drawings specific embodiment:
Fig. 1 is a bicycle ratchet crank mechanism structural representation:
As shown in fig. 1: bicycle ratchet crank mechanism, the outside of ratchet part is cast as one with crank, the mould M=2 of ratchet, tooth number Z=16, the ratchet number is 3.At the left end device of the axis of bicycle with ratchet crank 8, interior circle at crank is set with a ratchet, left end ratchet crank center screws in bicycle middle shaft 3 left ends by sinistral coiling, and between bottom bracket bearing chamber 2 and ratchet, adorn a left-hand dish type coil spring 9, the spring outer end is fixed on the vehicle frame of axis rear portion or on the spring compressor with fixed card 10, and the inner penetrates in the crank card; Right-hand member also installs ratchet crank 7, right-hand member ratchet crank center is the dextrad inside spin, screw in the axis, chain disk component 4 is to make separately, and chain drum is pressed on the dextrad inside spin axle sleeve, and the chain disk component is screwed in the axis right-hand member, again dextrad dish type coil spring 6 is sleeved on the chain disk component screw-casing, screw in right-hand member ratchet crank then, last fixed crank card 5 and Spring Card 1, the right-hand member Spring Card is fixed on the chain guard or other proper site.
Claims (3)
1, a kind of bicycle ratchet crank mechanism, it is characterized in that: described bicycle ratchet crank mechanism, at the left end device of the axis of bicycle with the ratchet crank, ratchet and crank are structure as a whole, interior circle at crank is set with a ratchet, left end ratchet crank center, screw in the bicycle middle shaft left end by sinistral coiling, and between bottom bracket bearing chamber and ratchet, adorn a left-hand dish type coil spring, the spring outer end is fixed on the vehicle frame of axis rear portion or on the spring compressor with fixed card, and the inner penetrates in the crank card; Right-hand member also installs the ratchet crank, right-hand member ratchet crank center is the dextrad inside spin, screw in the axis, the chain disk component is to make separately, and chain drum is pressed on the dextrad inside spin axle sleeve, and the chain disk component is screwed in the axis right-hand member, the dextrad dish type being revolved spring housing is contained on the chain disk component screw-casing again, screw in right-hand member ratchet crank then, last fixed crank card and Spring Card, the right-hand member Spring Card is fixed on the chain guard or other proper site.
2, bicycle ratchet crank mechanism as claimed in claim 1 is characterized in that: described bicycle ratchet crank mechanism, on the vehicle frame of both sides, axis rear portion, respectively set up auxiliary riding, and left side one flexibly connects only.
3, bicycle ratchet crank mechanism as claimed in claim 1 is characterized in that: described bicycle ratchet crank mechanism, it also can install on trishaw, hand-propelled tricycle, wheelchair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00207394U CN2422225Y (en) | 2000-04-07 | 2000-04-07 | Ratchet crank mechamism for bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00207394U CN2422225Y (en) | 2000-04-07 | 2000-04-07 | Ratchet crank mechamism for bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2422225Y true CN2422225Y (en) | 2001-03-07 |
Family
ID=33575073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00207394U Expired - Fee Related CN2422225Y (en) | 2000-04-07 | 2000-04-07 | Ratchet crank mechamism for bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2422225Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104859779A (en) * | 2015-06-10 | 2015-08-26 | 姜起文 | Reciprocating type pedal power mechanism of bicycle |
| CN109353443A (en) * | 2018-12-04 | 2019-02-19 | 吉贵宝 | A kind of non-resistance electric bicycle |
-
2000
- 2000-04-07 CN CN00207394U patent/CN2422225Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104859779A (en) * | 2015-06-10 | 2015-08-26 | 姜起文 | Reciprocating type pedal power mechanism of bicycle |
| CN109353443A (en) * | 2018-12-04 | 2019-02-19 | 吉贵宝 | A kind of non-resistance electric bicycle |
| CN109353443B (en) * | 2018-12-04 | 2023-11-07 | 吉贵宝 | Resistance-free electric bicycle |
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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 |