CN2034960U - Drive unit for bicycle - Google Patents
Drive unit for bicycle Download PDFInfo
- Publication number
- CN2034960U CN2034960U CN 88212304 CN88212304U CN2034960U CN 2034960 U CN2034960 U CN 2034960U CN 88212304 CN88212304 CN 88212304 CN 88212304 U CN88212304 U CN 88212304U CN 2034960 U CN2034960 U CN 2034960U
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- CN
- China
- Prior art keywords
- center tap
- joint
- rear axle
- bearing
- bicycle
- 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.)
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Abstract
The utility model relates to a drive unit for a bicycle, which is driven by cone gears. The bicycle is driven through two pairs cone gears and ratchet wheels by a center shaft; the whole device is sealed in a middle joint, a right flat fork pipe and a rear joint. The utility model has the advantages of compact structure, labour saving, light weight, wear-resistance, long service life, convenient assembly and disassembly and easy maintenance. The utility model can be matched with various portable vehicles, trucks and tricycles of 510 millimeters (20 inches), 610 millimeters (24 inches), 660 millimeters (26 inches), 710 millimeters of (28 inches), etc.
Description
The utility model relates to a kind of bicycle driving device.
Existing bicycle drive unit all is made up of pedal, axis parts, sprocket wheel, chain, flywheel and rear axle part etc., and the deficiency of this type of drive has: the first, and chain gear efficient is low, the effort of riding.Second, chain is easy to wear: when chain bears a heavy burden 250 kilograms the time, elongated 0.19 millimeter in 8 hours, when chain bears a heavy burden 750 kilograms the time, elongated 1 millimeter in 18 hours, and when the chain wear elongation reaches 1 millimeter, just can not continue to use, and the required material of chain is had relatively high expectations, and generally uses the 19Mn material, and this material is mainly by import.The 3rd, the maintaining inconvenience, chain, sprocket wheel clean trouble, and chain easily comes off after elongating, and the chain shell is yielding, influences transmission.
The purpose of this utility model is to provide a kind of cone gear-driven device, replaces the actuating device that oldfashioned sprocket wheel, chain, flywheel etc. are constituted, and it has rides laborsavingly, in light weight, wear-resistant, and the life-span is long, and is simple in structure, is convenient to advantages such as maintenance, maintenance.
To achieve these goals, technical solution of the present utility model is: on the axis right side of bicycle working direction, a driving bevel gear is installed, the cyclist is pedaled when changeing axis, by this driving bevel gear, drive is installed in the right chain stay pipe of bicycle and the driven bevel pinion of the transmission shaft front end parallel with right chain stay pipe, and then drive the back driving bevel gear of this shaft rear end, drive the back driven bevel pinion that is installed in the rear axle right side again, then by being installed in the ratchet of back driven bevel pinion left end, drive is contained in the ratchet of ratchet outside, drives the back right floral disc that connects together with screw and ratchet at last, drives bicycle and advances.Whole device all is enclosed in center tap, right chain stay pipe and joint the inside, back, and safe and reliable, maintaining is convenient.
Brief description of drawings:
Fig. 1 is the schematic appearance of the utility model after assembling on the bicycle.
Fig. 2 is an assembling scheme drawing of the present utility model.
Fig. 3 is the fixedly scheme drawing of center tap of the utility model.
Fig. 4 is the movable center tap scheme drawing of the utility model.
Below comprehensive accompanying drawing the utility model will be further described:
The utility model mainly contains pedal, axis parts (2), center tap (1), centre bearer joint (5), driving bevel gear (3), driven bevel pinion (4), transmission shaft (6), right chain stay pipe (15), rear axle (24), back driving bevel gear (8), back driven bevel pinion (11), ratchet (13), back joint (9), rear bearing joint (7), back right floral disc (12), left side floral disc (14), left chain stay pipe compositions such as (16).Referring to Fig. 2, center tap (1) is fixed on pipe and standpipe lower end under the bicycle, and the center tap right-hand member is horn-like gear case, and its right rear end has internal thread hole, and left back end is semicircle breach.Axis is by middle axle bumper (18,19), and packing ring, locknut, steel ball and bottom bracket cup are installed in the center tap of vehicle frame, and the position, the left and right sides of axis can be adjusted by two middle axle bumpers, so that driving bevel gear (3) and driven bevel pinion (4) are meshing with each other.Driving bevel gear (3) (modulus m=2.5, tooth number Z=28, pitch diameter d=70) is installed on the axis right-hand member of bicycle working direction, is fixed in shaft key groove and the annular groove in being contained in key and snap ring, places in the horn-like gear case of center tap.(m=2.5, Z=13 d=32.5) are installed in the threaded hole of center tap right rear end driven bevel pinion (4), are meshed with driving bevel gear, and both revolution ratios are 1:2.15, are fixed on the center tap right part with center tap end cap (20).Driven bevel pinion has outer step, on its outer step antifriction-bearing box is housed.Centre bearer joint (5) is for there being externally threaded circular sleeve, bearing hole is arranged in the middle of the one end, antifriction-bearing box on the outer step of driven bevel pinion matches with this bearing hole, the other end has and right chain stay pipe (15) bonded assembly internal thread hole, and centre bearer joint (5) is connected on center tap (1) the right rear end negative thread by its outside thread.Rear axle (24) is installed in the rear axle tube of bicycle, and rear axle tube and left floral disc, right floral disc are fixed as an integral body.Its left floral disc, left back axle bumper, steel ball, nut, packing ring are general part, have been screwed ratchet (13) on the right floral disc (12).Back driven bevel pinion (11) sky be enclosed within rear axle (m=2.5, Z=17, d=42.5) right-hand member, back driven bevel pinion left end is equipped with ratchet, matches with ratchet (13) on being placed at right floral disc, and between back driven bevel pinion and the ratchet steel ball is housed.Back driven bevel pinion right-hand member contacts with the rear axle bumper that is contained in the rear axle right-hand member (10) by steel ball.Back driving bevel gear (8) (m=2.5, Z=18, d=45) be contained in the rear bearing joint (7), be meshed with back driven bevel pinion (11), the engage position of back driving bevel gear and back driven bevel pinion can be adjusted by the pad on rear bearing joint (7) and the rear axle bumper (10), their both revolution ratios are 1:1.06, and back driving bevel gear (8) has outer step, on its outer step antifriction-bearing box are housed.Rear bearing joint (7) has bearing hole for externally threaded circular sleeve is arranged in the middle of the one end, and the antifriction-bearing box on the outer step of back driving bevel gear (8) matches with this bearing hole, and the other end has the internal thread hole that is connected with right chain stay pipe (15).Back joint (9) is a bending two siphunculus shape spare, is fixed on the right-hand member of rear axle (24), is connected with rear bearing joint (7), and transmission shaft (6) two ends are separately fixed on driven bevel pinion (4) and the back driving bevel gear (8).Right chain stay pipe (15) two ends are connected with rear bearing joint (7) with centre bearer joint (5) respectively.Left side chain stay pipe (16) one ends are connected with the semicircle breach of the left back end of screw (17) and center tap (1), and the other end is fixed on the rear axle left end.
The utility model center tap is designed to fixed type and movable two kinds, and as shown in Figure 3 and Figure 4, the fixed type center tap is directly with standpipe (22) with time manage (23) and be welded.Movable center tap is to be processed with two lugs above the center tap outside face, welds with bicycle profile tube and following pipe respectively with V-joint (21), and two lugs of this V-joint and center tap are fastening by dish screw.
The utlity model has following advantage:
(1) ride brisk laborsaving: Bevel Gear Drive efficient (n) height, n=0.94～0.97, and it is little to generate heat, speed ratio is constant, lubricating condition is good. And existing chain transmission mode, the transmission efficiency optimum state is 0.95, and this requires sprocket wheel and flywheel in same plane, and requires lubricating condition good, but in the reality, sprocket wheel and flywheel be difficult to guarantee in same plane, and because the impact of dust, silt, make the poor lubrication of chain, sprocket wheel, frictional resistance increases, be difficult to reach the optimum value of efficient, and the utility model gear drive is easy to guarantee good engagement, the transmission efficiency height.
(2) in light weight, saving in material: the utility model driving device total weight is 2.745 kilograms, and existing chain drive total weight is 3.4 kilograms (are example with 26 inches bicycles).
(3) wear-resistant, the life-span is long: the gear pair transmission device life-span is long, and it is very little to wear and tear; Even long-term use has produced certain abrasion loss, also can make two pairs of gears regain good meshing relation, and increase the service life by adjusting.In addition, this driving device all is enclosed in the inside, has avoided the erosion of rainwater, silt, dust, is easy to maintaining.
The utility model is applicable to the bicycle of 510 millimeters (20 inches), 610 millimeters (24 inches), 660 millimeters (26 inches), 710 millimeters various models such as (28 inches), comprises bogie and three-wheel vehicle.The needs that be to adapt to various vehicles, conical gear modulus have 2 millimeters, 2.25 millimeters, 2.5 millimeters to become serial with different transmitting ratios than number form.
Claims (4)
1, a kind of bicycle driving device comprises pedal, center tap, axis parts, rear axle part, it is characterized in that:
(1) center tap right-hand member has horn-like gear case, and its right rear end has internal thread hole, and left back end is semicircle breach;
(2) driving bevel gears are fixed on the right-hand member of axis with key and snap ring, place in the horn-like gear case of center tap;
(3) driven bevel pinions are installed in the center tap right rear end tapped bore, are meshed with driving bevel gear, and outer step is arranged on the driven bevel pinion, and antifriction-bearing box is housed on it;
(4) centre bearer joints are that externally threaded circular sleeve is arranged, and bearing hole is arranged in the middle of the one end, and the antifriction-bearing box on the outer step of driven bevel pinion matches with this bearing hole, and the other end has internal thread hole;
(5) the centre bearer joint is connected on the center tap right rear end internal thread hole;
The driven bevel pinion sky is enclosed within the rear axle right-hand member after (6) one, and ratchet and steel ball on back driven bevel pinion left end is equipped with ratchet and places right floral disc match, and its right-hand member contacts with the rear axle bumper that is contained in the rear axle right-hand member by steel ball,
(7) the back driving bevel gear is contained in the rear bearing joint, be meshed with the back driven gear, back driving bevel gear has outer step, on its outer step antifriction-bearing box is housed, the rear bearing joint is for there being externally threaded circular cylinder, bearing hole is arranged in the middle of the one end, and the antifriction-bearing box on the outer step of back active umbrella tooth matches with this bearing hole;
(8) the back joint is a bending two siphunculus shape spare, is fixed on the right-hand member of rear axle, be connected with the rear bearing joint,
(9) the transmission shaft two ends are separately fixed on driven bevel pinion and the back driving bevel gear, and right chain stay pipe two ends are connected with the rear bearing joint with the centre bearer joint,
(10) left chain stay Guan Yiduan is connected with the semicircle breach of the left back end of screw and center tap, and the other end is fixed on the rear axle left end.
2, bicycle driving device according to claim 1 is characterized in that the left floral disc of rear axle tube and rear axle part and right floral disc are fixed as an integral body.
3, bicycle driving device according to claim 1 is characterized in that center tap is divided into fixed type and movable.
4, bicycle driving device according to claim 1 is characterized in that movable center tap is at the center tap outside face two lugs to be arranged, and V-joint and two lugs of center tap of being welded on bicycle profile tube and following pipe lower end are screwed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88212304 CN2034960U (en) | 1988-03-23 | 1988-03-23 | Drive unit for bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88212304 CN2034960U (en) | 1988-03-23 | 1988-03-23 | Drive unit for bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2034960U true CN2034960U (en) | 1989-03-29 |
Family
ID=4845618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88212304 Withdrawn CN2034960U (en) | 1988-03-23 | 1988-03-23 | Drive unit for bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2034960U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6446995B1 (en) | 1999-06-04 | 2002-09-10 | Shanghai Baoqi Bicycle Co., Ltd. | Bicycle with bevel gear drive for children |
| CN103144735A (en) * | 2013-03-14 | 2013-06-12 | 重庆通盛建设工业有限公司 | Transmission device |
| CN103935460A (en) * | 2014-04-17 | 2014-07-23 | 重庆通盛建设工业有限公司 | Bicycle shaft driving system assembly |
| CN108974241A (en) * | 2017-05-31 | 2018-12-11 | 卢金堂 | A kind of bicycle or electric bicycle rear-wheel transmission mechanism |
| US11766908B2 (en) | 2015-05-07 | 2023-09-26 | Gibbs Technologies Limited | Retractable wheel assembly for an amphibian |
-
1988
- 1988-03-23 CN CN 88212304 patent/CN2034960U/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6446995B1 (en) | 1999-06-04 | 2002-09-10 | Shanghai Baoqi Bicycle Co., Ltd. | Bicycle with bevel gear drive for children |
| CN103144735A (en) * | 2013-03-14 | 2013-06-12 | 重庆通盛建设工业有限公司 | Transmission device |
| CN103935460A (en) * | 2014-04-17 | 2014-07-23 | 重庆通盛建设工业有限公司 | Bicycle shaft driving system assembly |
| US11766908B2 (en) | 2015-05-07 | 2023-09-26 | Gibbs Technologies Limited | Retractable wheel assembly for an amphibian |
| CN108974241A (en) * | 2017-05-31 | 2018-12-11 | 卢金堂 | A kind of bicycle or electric bicycle rear-wheel transmission mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |