CN2124855U

CN2124855U - Axle drive bicycle

Info

Publication number: CN2124855U
Application number: CN 92212177
Authority: CN
Inventors: 熊海泉; 魏红斌
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-01-27
Filing date: 1992-01-27
Publication date: 1992-12-16

Abstract

The utility model relates to an axle drive bicycle, particularly a bicycle. A drive axle is arranged in a flat forking side pipe; a central axle and a rear wheel hub disc are respectively provided with gear wheels used for conveying the movement of an intersecting axle, and at least one position is provided with a contrate gear; the front and the rear axle heads of a drive axle are respectively provided with cylindrical gears or cone gears meshed with the axle heads. A direction clutch is arranged on the rear axle head of the drive axle or a rear wheel hub disc. The utility model solves the problems of the difficult adjustment of the meshing space of two pairs of cone gears of the existing axle drive bicycle, the drive axle with high coaxiality requirement on the relevant components and the slight deformation of the flat fork affecting the riding. The utility model is mainly used for people's ride instead of walking, body-building and working.

Description

Axle drive bicycle

The utility model relates to the shaft drive bicycle, especially the shaft drive bicycle.

Existing shaft drive bicycle is compared with the chain-driving bicycle, and the key distinction is at actuating device.CN88205727.8 patent described " gear transmission new bicycle " for example, actuating device for ": shaft gear in the circular cone is housed on axis; the circular cone rear axle gear is housed on the rear axle; a transmission shaft is housed in the pipe of chain stay right side, its two ends respectively have with in, the conical gear of rear axle gear interlock." its main deficiency is: the conical gear matching requirements are higher, and two pairs of conical gears have four gaps need cooperate adjustment, and especially dismounting need be resetted, comparatively trouble inconvenience.Gear wheel shaft to radially have dislocation slightly, the skew of its pitch cone joining is meshed bad.Therefore, right alignment requires too high, must when (comprising the elastic deformation that strong top shakes), be unfavorable for smooth and easy transmission in the chain stay slight deformation.

The purpose of this utility model is: provide a kind of and do to transmit the concurrent aces motion with a pair of contrite gear at least, gear clearance is more easily adjusted, transmission shaft requires low slightly with respect to the right alignment of strut member and gear, the chain stay slight deformation also can be ridden, and the shaft drive bicycle of the directional clutch that meets the custom of riding is housed.

The purpose of this utility model is reached by following scheme: a kind of vehicle frame that mainly comprises, brake, saddle, front fork, front axle, wheel, the mud plate, parts and actuating devices such as clothes hanger, actuating device is mainly by pedal, axis and rear axle part, directional clutch, gear, the compositions such as housing of transmission shaft and double as chain stay one side pipe, transmission shaft in the actuating device (1 or 51) is contained in the side pipe 16 of chain stay, this pipe is by chain stay joint (2,17) be fastened on the driving tooth wheel cover 23 at axis gear cover 11 and rear axle position, install respectively as the gear (10 that transmits the concurrent aces motion at bottom bracket axle 9 and rear-wheel hub floral disc 34 places, 31) or (71,31), and have at least a place that contrite gear (10 is installed, 31) or 31, on the preceding spindle nose (4 or 54) of transmission shaft (1 or 51) and the back spindle nose (18 or 84), the conical gear or the cylindrical wheel that can be engaged with is installed respectively, the back spindle nose of transmission shaft (18 or 84) perhaps is equipped with directional clutch on the rear-wheel hub floral disc 34.

For making the gear clearance adjustment easy as far as possible, the right alignment of relevant member requires low as far as possible, contrite gear (10,31) is all installed at above-mentioned bottom bracket axle 9 and rear-wheel hub floral disc 34 places, on the preceding spindle nose (4 or 54) of transmission shaft (1 or 51) and the back spindle nose (18 or 84), the cylindrical wheel (5,21) that is engaged with is installed respectively.

Certainly also can only at a wherein place at bottom bracket axle 9 and rear-wheel hub floral disc 34 places contrite gear 31 be installed, conical gear 71 is installed at another place, on the preceding spindle nose 54 of transmission shaft 51 and the back spindle nose 84 conical gear 72 or the cylindrical wheel 21 that can be engaged with is installed respectively.Though need to adjust the axial and diameter clearance of a pair of conical gear, another is to being the engagement of contrite gear and cylindrical wheel, and the axial engagement of cylindrical wheel can misplace within the specific limits, so the endplay adjustment is also simple.

The utility model is owing to adopt contrite gear and spur gear drive, allow the sideshake and the bottom clearance of gear bigger than conical gear, make transmission shaft require to reduce with respect to the right alignment of strut member and gear, cylindrical wheel is when engagement in addition, dislocation in axially can certain limit only is need be to adjust the clearance radially.Therefore, not only the gear clearance adjustment is easy for the utility model, and transmission shaft also can smooth and easyly rotate when the chain stay slight deformation.If at axis or rear axle position a pair of contrite gear only is installed, another is still adjusted than the gap of adopting two pairs of conical gears easily to conical gear is installed.Be interrupted the custom of driving to ride for adapting to people, the utility model has been installed ratchet one detent mechanism or overriding clutch on the back spindle nose or rear-wheel hub floral disc of transmission shaft.In order better to reach goal of the invention, in an embodiment, the diameter clearance tab at rear axle position is pegged graft and to be assemblied in the chain stay contact pin, make to tear (dress) open as long as tear (dress) 4 open during trailing wheel, even 2 screws (nut).The diameter clearance at trailing wheel position can change rear axletree by the rotation rear axletree and adjust easily with respect to the screw position of tab.As seen, the dismounting of trailing wheel, the adjust the clearance of gear is all very easy.If the directional clutch of double as muff coupling has been installed on the spindle nose of back, the case at rear axle position just can be as one.Only need two nuts of dismounting when tearing (dress) trailing wheel open, just can exempt the formality of transferring gear clearance with a pair of gear at rear axle position in company with shell, one dismounting of trailing wheel.If transmission shaft divides more piece, and with the coupler connection, just can compensate the comprehensive displacement of transmission shaft for relevant member preferably, the distortion of chain stay pipe also can normally be ridden greatly a bit.The utility model has made full use of former chain-driving cycle frame, center tap, upright fork, axis, rear axle, and member and antifriction-bearing boxs such as rear-wheel hub floral disc make and transform easily that cost is low.The product that these advantages have been manufactured experimently confirms.

The drawing of accompanying drawing is described as follows:

Fig. 1. bicycle schematic appearance of the present utility model,

Fig. 2. the simplest driving device structure figure of bicycle of the present utility model,

Fig. 3. the another kind of constructional drawing of the simplest actuating device of bicycle of the present utility model,

Fig. 4. bicycle optimal drive structure drawing of device of the present utility model,

Fig. 5. the another kind of constructional drawing of bicycle optimal drive device of the present utility model.

Below in conjunction with drawings and Examples the utility model is further described.

With reference to Fig. 1. bicycle of the present utility model mainly comprises: parts and actuating devices such as vehicle frame, brake, saddle, front fork, front axle, wheel, mud plate, clothes hanger, actuating device mainly is made up of the members such as housing of pedal, axis and rear axle part, gear, transmission shaft, directional clutch and double as chain stay right side pipe.It and the existing shaft drive bicycle key distinction are: in the actuating device motion of concurrent aces by the transmission shaft that places in the chain stay right side pipe, and the cylindrical wheel at two ends with in, the contrite gear (also can adopt a pair of conical gear therein) at rear axle position carries out.Only drawn the schematic appearance of bicycle among the figure, driven off by shaft three-wheel vehicle therewith roughly the same, therefore draw at the end.

Embodiment 1. sees figures.1.and.2, and bicycle of the present utility model mainly comprises above-mentioned parts and shaft drive actuating device.In the actuating device: the active contrite gear 10 that bottom bracket axle 9 right-hand members are installed is fastening by key 8 shaft block rings 7 location.The driven cylindrical gear 5 that is meshed with active contrite gear 10 is fastened on preceding spindle nose 4 front ends of transmission shaft 1 by key 6 and nut 14, the endplay of cylindrical wheel need not to adjust, and bottom bracket cup (13,37) and locknut (12,36) that diameter clearance only need be adjusted in the vehicle frame center tap 15 get final product.Right bottom bracket cup 13 changes the structure that adds locknut 12 into.The design of contrite gear, calculating and job operation can references: (1) " gear principle and manufacturing " Science Press 1972; (2) " instrument part and mechanism " China Machine Press 1973; " instrument gears " China Machine Press 1982; Deng clock and watch or instrument gears document book.Transmission shaft 1 is a straight major axis, and it is supported by bearing (3,19) and chain stay joint (2,17), is installed in the chain stay right side pipe 16.The fastening chain stay joints in two ends (2,17) of chain stay right side pipe 16, and be installed on axis gear cover 11 and the rear axle position driving tooth wheel cover 23.On back spindle nose 18 afterbodys of transmission shaft 1, the active cylindrical wheel 21 of installation is fastening by key 20 and nut 22.Be meshed the ratchet outer ring 32 of driven contrite gear 31 double as ratchet ┄ detent mechanisms with active cylindrical wheel 21.On the right floral disc 34 of rear-wheel hub, other structures and the assembly method of this ratchet--detent mechanism are identical with the chain-driving bicycle freewheel by screw threads for fastening for its ratchet inner ring 33.The gear cover at rear axle position is divided into driving tooth wheel cover 23 and driven wheel cover 30 two parts.Initiatively install the chain stay contact pin 27 that has notch on the stud wheel cover 23, be installed in the pipe bottom, upright fork right side of vehicle frame.Driven tooth wheel cover 30 is done together with diameter clearance tab 25.Tab 25 is contained on the rear axletree 35 by screw, and is plugged in the notch of chain stay contact pin 27, and is fastening by two screws 26.The axle bumper 29 of rear axletree 35 right-hand members also can be made of one axle shelves 29 and rear axletree 35 by nut 28 lockings.This just makes diameter clearance to be changed its relative position that is contained in the diameter clearance tab 25 and to be adjusted easily by rotation rear axletree 35.During the dismounting trailing wheel, only need two screws 26 of dismounting and two nuts (24,38), can be with trailing wheel in company with rear axletree 35 and tab 25, from the notch of chain stay contact pin 27, split out or pack into.Exempted existing shaft drive bicycle dismounting trailing wheel, also wanted the whole rear axle drive disk assembly of dismounting, the trouble of adjusting lash is once all wanted in every dismounting.Actuating device shown in Figure 2 is installed in the right side of vehicle frame.In like manner, this actuating device also can place the left side of vehicle frame.

The utility model transmits the concurrent aces motion owing to adopted contrite gear and cylindrical wheel to mesh, its matching requirements are lower than conical gear, during gear mesh, allow axially to have the dislocation of certain limit, its ingear bottom clearance and sideshake are also big slightly than conical gear, therefore, and the chain stay pipe of permission distortion (wound permanent deformation, the top elasticity sex change of shaking) bigger than the scope of conical gear, the adjust the clearance of gear is also easy than conical gear.

Embodiment 2. is with reference to Fig. 1 and Fig. 3, and bicycle of the present utility model mainly comprises above-mentioned parts and actuating device.Reference examples 1(Fig. 2), members in the axis gear cover 11 have only contrite gear 10 and with the shape of its ingear cylindrical wheel 5 and the difference of size, because the contrite gear 10 that bottom bracket axle 9 right-hand members are installed is the crown shape, the cylindrical wheel 5 that is engaged with can be done very for a short time, help dwindling component volume, alleviate complete vehicle weight, also favourable attractive in appearance and cost-cutting.Back drive disk assembly and example 1 structure main difference are: change ratchet and pawl arrangement into overriding clutch and be arranged on the back spindle nose 18 of transmission shaft 1.Driven contrite gear 31 directly is fastened on the right floral disc 34 of rear-wheel hub by screw thread.With the outer hub 43 of driven contrite gear 31 ingears active cylindrical wheel 21 double as overriding clutchs, star-wheel 41 and axle shelves 40 are made of one, and make a shelves of bearing 19.The back spindle nose 18 of transmission shaft 1 is a stepped shaft of doing screw thread and convex shoulder, the star-wheel 41 of overriding clutch by screw threads for fastening the back spindle nose 18 on.The outer hub 43 of overriding clutch is supported by bearing 44, with back-up ring 46 location, is installed on the spindle nose 18 of back, and the afterbody of back spindle nose 18 has back-up ring 45 location.The outer hub 43 of overriding clutch, the unidirectional delivery of roller 42 control torques between the star-wheel 41 adapts to this and to drive and to slide.Because overriding clutch is simple in structure, install simultaneously on the spindle nose of back, make the rear axle drive disk assembly more small and exquisite, help the attractive in appearance and cost-cutting of car load.

Embodiment 3. these examples are most preferred embodiment, and with reference to Fig. 1 and Fig. 4, bicycle of the present utility model mainly comprises above-mentioned parts and actuating device, reference examples 2(Fig. 3) main difference is: transmission shaft 1 changes merogenesis into and combines.Be retrofitted in the driving tooth wheel cover 23 in the driven tooth wheel cover 30 of the 2nd, ratchet--detent mechanism by the rear axle position.The 3rd, the gear cover at rear axle position (23,30), chain stay contact pin 27, tab 25 is made of one.This example (Fig. 4) transmission shaft 51 is divided into preceding

spindle nose

54,59 liang of joints of tween drive shaft connect with tooth embedding coupler 52, and the afterbody of preceding spindle nose 54 has dark cross recess 53, axle shelves (56,57) have been done at two ends, and the driven cylindrical gear 5 that is meshed with active contrite gear 10 is done at the middle part.By the axle bowl, two antifriction-bearing boxs (55,58) that steel ball and axle shelves constitute are positioned at chain stay joint 2 with preceding spindle nose 54 supports, on axis gear cover 11 and the vehicle frame center tap 15.Tween drive shaft 59 front ends of transmission shaft 51 are made cross boss 52, be plugged in the cross recess 53 of preceding spindle nose 54, the rear end of tween drive shaft 59 is outer four directions 61, be plugged on the ratchet inner ring axle 67 the preceding silk axle shelves 64 installed interior cubic 63 in, play muff coupling, initiatively cylindrical wheel 21 is conjuncted with the rear axle position in ratchet outer ring 66.Front and back silk axle shelves (64,68) are back spindle nose 18 by screw threads for fastening at ratchet inner ring axle 67() on, support by small ball 65 between the ratchet Internal and external cycle, to guarantee that initiatively cylindrical wheel 21 can be made unidirectional rotation under the effect of ratchet 70.Ratchet--the detent mechanism of these many merit unifications constitutes bearing 62 by silk axle bumper, steel ball and axle bowl, and locatees with inner ring axle 67 rear bearings 69 together support.So just, dwindled volume, it is more reliable to work.Driven contrite gear 31 by screw threads for fastening on the right floral disc 34 of rear-wheel hub, and with active cylindrical wheel 21 engaged transmission.Because transmission shaft adopts merogenesis, and connects with coupler, this just can better compensate the comprehensive displacement of transmission shaft with respect to relevant member, satisfies the requirement that the slight distortion of chain stay pipe also can normally be ridden.The driving tooth wheel cover 23 driven tooth wheel covers 30 at the rear axle position example 1(Fig. 2), chain stay contact pin 27, diameter clearance tab 25, in this example it is made of one, the preceding silk axle bumper double as muff coupling (61,63) of ratchet in addition, only need silk braid 60 behind the dismounting chain stay when making the dismounting trailing wheel, the nut 38 of right upright fork tightening screw and rear axletree 35 left ends, can be with the transmission component at rear axle position in company with the trailing wheel dismounting, need not to adjust once more the gear clearance at trailing wheel position, dismounting is more more convenient than existing bicycle.

Embodiment 4, and with reference to Fig. 1 and Fig. 5, the utility model bicycle mainly comprises aforesaid parts and actuating device.Contrast Fig. 4, the gear in the axis gear cover 11 in the example 3 is used conical gear instead; The second, the coupler of the transmission shaft 51 of merogenesis is used cross joint coupler instead, and the 3rd, directional clutch is used overriding clutch instead.The contrast Fig. 2, the chain stay contact pin 27 in the example 1 with use V-arrangement dovetail furrow plug-in mounting connecting of tab 25 instead; The 5th, the two ends punching out exit skirt instead of flat fork-join head (2,17) of chain stay right side pipe 16.With reference to Fig. 5, place conical gear (71 and 72) in the axis gear cover 11 in this example, its installation site, fastening means, support are located with routine 3(Fig. 4) in cooresponding that to contrite gear (10 and 5).Because of another to being contrite gear (31 and 21), allow axially to misplace, so endplay all is that the easy adjustment of conical gear is a little than two pairs.That that equally, only changes the rear axle position is that conical gear also can to gear.The transmission shaft 51 of the merogenesis that this is routine is divided into preceding spindle nose 54, tween drive shaft 59 and back spindle nose 84 3 joints, preceding spindle nose 54 connects with tween drive shaft 59 usefulness crosses joint coupler, and tween drive shaft 59 and back spindle nose 84 connect by outer six sides 74, interior six sides 77 and key 79, compare compensation integration displacement better with example 3.The overriding clutch that this is routine, its star-wheel 83 is supported by (or needle roller) bearing 82 that slides, and is installed on the back spindle nose 84 of transmission shaft 51, has also done initiatively cylindrical wheel 21 on this star 83.The outer hub 81 of this overriding clutch and axle shelves 78 disjunctors.The support location of this power-transfer clutch, the input and output of moment are with example 3, and overriding clutch is than ratchet--and detent mechanism is simple, processing letter, cost root.This routine diameter clearance tab 25 is made the dovetail form piece, and with driven tooth wheel cover 30V body, be associated in rear axletree with the screw thread of this tab 25.The gear clearance method of adjustment is with example 1.During assembling, only need diameter clearance tab 25 is inserted among the dovetail V-shaped groove of chain stay contact pin 27, and the nut that screws the rear axletree two ends gets final product.Its structure sees that the B-B among Fig. 5 analyses and observe.During dismounting, tab has reduced the trouble of tearing two screws 26 in the chain stay contact pin 27 as described in Example 1 open in company with rear axletree and trailing wheel dismounting together.

Above-described embodiment, its working process is such: when the people steps pedal forward, crank drives bottom bracket axle, just driven initiatively contrite gear, the driven cylindrical gear that is engaged with drives transmission shaft and rotates, and is positioned at the active cylindrical wheel of the transmission shaft other end, drive is installed in the driven contrite gear on the rear-wheel hub floral disc, this forward rotation makes to drive the directional clutch interlock wheel rolling and advance.When oppositely stepping, directional clutch does not change wheel.

Claims

1, a kind of shaft drive bicycle, mainly comprise vehicle frame, brake, saddle, front fork, front axle, wheel, the mud plate, parts and actuating devices such as clothes hanger, actuating device is mainly by pedal, axis and rear axle part, directional clutch, gear, the compositions such as housing of transmission shaft and double as chain stay one side pipe, it is characterized in that: the transmission shaft in the actuating device (1 or 51) is installed in the side pipe 16 of chain stay, this pipe is by chain stay joint (2,17) be fastened on the driving tooth wheel cover 23 at axis gear cover 11 and rear axle position, conical gear 71 is installed on the bottom bracket axle 9 or contrite gear 10 is installed, the preceding spindle nose (4 or 54) of transmission shaft (1 or 51) go up installation can with said gear ingear conical gear 72 or cylindrical wheel 5, contrite gear 31 is installed at rear-wheel hub floral disc 34 places, back spindle nose (18 or 84) is gone up the cylindrical wheel 21 that installation can be engaged with, and on back spindle nose of transmission shaft (18 or 84) or the rear-wheel hub floral disc 34 directional clutch is installed.

2, shaft drive bicycle according to claim 1, it is characterized in that: the chain stay contact pin 27 that installs on the driving tooth wheel cover 23 at rear axle position has notch, driven tooth wheel cover 30 is conjuncted with diameter clearance tab 25, and be installed on the rear axle rod 35 by screw thread, plug-in mounting is anchored in the notch of chain stay contact pin 27.

3, shaft drive bicycle according to claim 1 and 2 is characterized in that: transmission shaft 51 is divided at least two joints (54 and 59) or (54,59 and 84), connects with coupler (52,64) or (73,76) between each joint.

4, shaft drive bicycle according to claim 1 and 2, it is characterized in that: contrite gear (10 is all installed at axis rod 9 and rear-wheel hub floral disc 34 places, 31), the cylindrical wheel (5,21) that is engaged with is installed respectively on the preceding spindle nose (4 or 54) of transmission shaft (1 or 51) and the back spindle nose (18 or 84).

5, shaft drive bicycle according to claim 3, it is characterized in that: contrite gear (10 is all installed at axis rod 9 and rear-wheel hub floral disc 34 places, 31), the cylindrical wheel (5,21) that is engaged with is installed respectively on the preceding spindle nose (4 or 54) of transmission shaft (1 or 51) and the back spindle nose (18 or 84).

6, shaft drive bicycle according to claim 5 is characterized in that: directional clutch is installed on the back spindle nose 84 of merogenesis transmission shaft 51, the ratchet outer ring 66 of this mechanism and active cylindrical wheel 21 disjunctors.Before silk axle shelves 64 and back silk shelves 68 by screw threads for fastening on inner ring axle 67, four directions 63 in the front end of preceding silk axle shelves 64 is made, double as muff coupling.

7, shaft drive bicycle according to claim 1 and 2, it is characterized in that: conical gear 71 is installed on the bottom bracket axle 9, the conical gear 72 that is engaged with is installed on the preceding spindle nose 54 of transmission shaft 51, contrite gear 31 is installed at rear-wheel hub floral disc 34 places, installs on the back spindle nose 84 and can be engaged with cylindrical wheel 21.

8, shaft drive bicycle according to claim 3, it is characterized in that: conical gear 71 is installed on the bottom bracket axle 9, the conical gear 72 that is engaged with is installed on the preceding spindle nose 54 of transmission shaft 51, contrite gear 31 is installed at rear-wheel hub floral disc 34 places, installs on the back spindle nose 84 and can be engaged with cylindrical wheel 21.