CN2797188Y - Swing stem steering treading and speed change driving device of bicycle - Google Patents
Swing stem steering treading and speed change driving device of bicycle Download PDFInfo
- Publication number
- CN2797188Y CN2797188Y CNU2005200597926U CN200520059792U CN2797188Y CN 2797188 Y CN2797188 Y CN 2797188Y CN U2005200597926 U CNU2005200597926 U CN U2005200597926U CN 200520059792 U CN200520059792 U CN 200520059792U CN 2797188 Y CN2797188 Y CN 2797188Y
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Abstract
The utility model discloses a new swing rod steering treading and speed change driving device of a bicycle. The utility model comprises two sets of cranks, crank limiting pins, side axles, front chain wheels connected with the side axles, and chains sheathed on the front chain wheels and aback chain wheels, which are symmetrically arranged. The two sets of side axles are respectively connected with a pressing block and are respectively pressed on both ends of a transverse rod of a fulcrum axle. The back chain wheels are provided with two sets of three-stage speed change driving devices. The utility model enables the bicycle to obtain labor saving and long service life. Meanwhile, a double speed change driving structure can be adapted to transmission ratio required by complex road surfaces to obtain comfortable ride. When the driving performance of one side is damaged, the driving performance of the other side is still normal. The utility model has the advantage of safe use.
Description
Technical field
The utility model relates to a kind of bicycle fork commutation and tramples and speed-changing driving device.
Background technology
Device is trampled in the commutation of Regular Bicycle rotates pedal in 360 ° scope, to drive advancing of bicycle.In the rotation in each week, it is zero point that two maximum and effective arm of forces of effective arm of force all can appear in each pedal.According to the principle of merit=power * arm of force, under the situation that acting equates, the arm of force is big more, and is then laborsaving more.Therefore, device is trampled in the commutation of existing bicycle, has adopted the mode of wireline pulley assembly or extension spring, and the rotation of pedal is controlled in 100 ° of scopes of arm of force maximum.But, adopt the wireline pulley assembly to commutate and trample device, because the friction force of assembly pulley is bigger than the friction force of bearing, thereby the idle work that overcome friction is done is bigger, and steel rope is under the situation that rubs, twines, bends simultaneously, and service life is shorter; Adopt the device of trampling of extension spring mode, in the process of the application of force, to overcome the pulling force acting of spring, and when sliding, need or the application of force to lift pin motionless, perhaps spring is moved to the longest spacing position of crank that rests in, thereby equally relatively require great effort, simultaneously, spring can draw back in the process that stretches repeatedly and lose efficacy or fracture, service life is short, and because of spring stretching resilience the danger of pinching is arranged when stopping.
On the road surface of complexity, replace on the frequent road surface as uphill/downhill and smooth road, require to have different speed ratio (transmitting ratio) to adapt to ground-surface and change.The driving speed change of prior art adopts the mode of monolateral speed change, can't satisfy the demands; And under situation about damaging on one side, can't driven use.
Summary of the invention
The purpose of this utility model is in order to overcome above-mentioned defective, to provide the bicycle fork commutation that a kind of result of use is good and the life-span is long to trample and speed-changing driving device.
In order to achieve the above object, device of the present utility model comprise two groups of symmetrically arranged cranks, crank locating dowel pin, side shaft, with the side shaft bonded assembly before sprocket wheel and be set in before and after chain on the sprocket wheel; One group in the back sprocket wheel is provided with the three-step gear shift actuating device; Two groups of side shafts are connected with a briquetting respectively, and are pressed onto the two ends of a fulcrum shaft cross bar respectively.
Also be provided with the three-step gear shift actuating device on another group of sprocket wheel behind the utility model.
Trample shortcoming in the structure, more laborsaving and long service life owing to adopted above-mentioned measure, the utility model to overcome wire rope pulley assembly and extension spring; Simultaneously the structure of two variable speed drive (VSD) can adapt to the required transmitting ratio of complex road surface, allows ride more comfortablely, and under the situation that one side speed-changing driving device damages, another side is normal variable speed drive (VSD) still, use safer, more insure.
Description of drawings
Fig. 1 is a constructional drawing of the present utility model;
Fig. 2 tramples the constructional drawing of device for the commutation of the utility model fork;
Fig. 3 is the constructional drawing of the utility model speed-changing driving device.
The specific embodiment
As shown in Fig. 1 and Fig. 2, fork of the present utility model commutation is trampled device and is " balance-type type " and is symmetrical arranged.Left-hand axis 9 links to each other with left-hand axis bearing 8, and is installed on the left-hand axis ring seat 7.One end of left-hand axis 9 is captiveed joint with crank 6, and the other end is captiveed joint with left briquetting 11 with sprocket wheel 10, and left crank 6 is other to be provided with left crank locating dowel pin 5, and the slewing area of left crank is limited in about 100 °.Left side briquetting 11 is pressed in an end of fulcrum shaft cross bar 15, and fulcrum shaft cross bar 15 is arranged on an end of fulcrum shaft 12, and the other end of fulcrum shaft 12 is provided with pivot bearing shaft 12 and fulcrum shaft ring seat 14.With fulcrum shaft 12 is axis of symmetry, and the other end is symmetrically arranged with right briquetting 16, right sprocket wheel 17, right-hand axis 18, right-hand axis ring seat 19, right-hand axis bearing 20, right crank 21, right crank locating dowel pin 22, and right briquetting 16 is pressed in the other end of fulcrum shaft cross bar 15.
As shown in figures 1 and 3, fork commutation trample device by be set on the sprocket wheel 10 and 17 chain 4 with 23 and with the Chain stay 3 and 24 that side shaft bearing 8 is captiveed joint with 20, be connected with the speed-changing driving device that is installed in the back sprocket wheel.Speed-changing driving device is the center with rear axle 28, two ends are symmetrical arranged, three grades of flywheels 29 of rear axle left end and left speed change are captiveed joint with left back iron 2, be provided with left speed change between left back iron and the left three-step gear shift flywheel and dial chain device 1, left chain 4 is dialled the chain device by left back iron and left speed change and is locked on three grades of flywheels of left speed change.The other end of rear axle 28 is provided with three grades of flywheels 27 of right speed change equally, right speed change is dialled chain device 26 and right back iron 25, and right sprocket wheel 23 is dialled the chain device by right back iron and right speed change and is locked on three grades of flywheels of right speed change.
Working process:
When left side crank 6 clockwise directions are trampled,, make left-hand axis 9 clockwise directions rotate downwards, and drive left sprocket wheel 10 and left briquetting 11 clockwise directions rotate by left-hand axis ring seat 7, left-hand axis bearing 8.Left side briquetting is pushed down the left end of fulcrum shaft cross bar 15, and by pivot bearing shaft 13 and fulcrum shaft ring seat 14, fulcrum shaft 12 is rotated counterclockwise, thereby the right-hand member anticlockwise direction that drives fulcrum shaft cross bar 15 upwards rotates, by transmission, and then drive right briquetting 16, right sprocket wheel 17, right-hand axis 18, right crank 21 anticlockwise directions and upwards rotate, being subjected to the spacing of locating dowel pin 5 until the rotation of left crank 6 and stopping operating, right crank 21 also synchronously stops anticlockwise motion.At this moment, on the contrary right crank 21 clockwise rotate, do counter motion by above-mentioned parts, thereby left crank 6 left inverse clockwises rotated, receive the restriction of right limit pin 22 and stop until the rotation of right crank.Above-mentioned motion goes round and begins again, and drives bicycle and travels forward.
Two speed-changing driving devices can make the left and right sides chain speed change or driving respectively as required, to obtain different transmitting ratios.
Claims (5)
1. bicycle fork commutation is trampled and speed-changing driving device, comprise two groups of symmetrically arranged cranks, crank locating dowel pin, side shaft, with the side shaft bonded assembly before sprocket wheel and be set in before and after chain on the sprocket wheel; One group in the sprocket wheel of described back is provided with the three-step gear shift actuating device; It is characterized in that: described two groups of side shafts are connected with a briquetting respectively, and are pressed onto the two ends of a fulcrum shaft cross bar respectively.
2. a kind of bicycle fork commutation according to claim 1 is trampled and speed-changing driving device, and it is characterized in that: described fulcrum shaft cross bar is arranged on the end of fulcrum shaft.
3. a kind of bicycle fork commutation according to claim 2 is trampled and speed-changing driving device, and it is characterized in that: the other end of described fulcrum shaft is provided with fulcrum shaft ring seat and pivot bearing shaft.
4. a kind of bicycle fork commutation according to claim 1 is trampled and speed-changing driving device, it is characterized in that: also be provided with the three-step gear shift actuating device on another group of described back sprocket wheel.
5. a kind of bicycle fork commutation according to claim 4 is trampled and speed-changing driving device, it is characterized in that: three grades of flywheels, speed changes that described two groups of three-step gear shift actuating devices comprise rear axle and are arranged on the rear axle two ends are dialled chain device, back iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200597926U CN2797188Y (en) | 2005-06-17 | 2005-06-17 | Swing stem steering treading and speed change driving device of bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200597926U CN2797188Y (en) | 2005-06-17 | 2005-06-17 | Swing stem steering treading and speed change driving device of bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2797188Y true CN2797188Y (en) | 2006-07-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200597926U Expired - Fee Related CN2797188Y (en) | 2005-06-17 | 2005-06-17 | Swing stem steering treading and speed change driving device of bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2797188Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111017101A (en) * | 2019-12-30 | 2020-04-17 | 六壹八技术(深圳)有限公司 | Reciprocating driving mechanism and bicycle |
| WO2023098562A1 (en) * | 2021-12-01 | 2023-06-08 | 西安双驱自正智能科技有限公司 | Pedal bicycle |
-
2005
- 2005-06-17 CN CNU2005200597926U patent/CN2797188Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111017101A (en) * | 2019-12-30 | 2020-04-17 | 六壹八技术(深圳)有限公司 | Reciprocating driving mechanism and bicycle |
| WO2023098562A1 (en) * | 2021-12-01 | 2023-06-08 | 西安双驱自正智能科技有限公司 | Pedal 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 |