CN2325303Y

CN2325303Y - Intermittent friction type wheel hub transmission of changeable ratio used for right direction and opposite direction for bicycle

Info

Publication number: CN2325303Y
Application number: CN98209024U
Authority: CN
Inventors: 刘文洙
Original assignee: World Industry Co Ltd
Current assignee: World Industry Co Ltd
Priority date: 1997-12-31
Filing date: 1998-02-19
Publication date: 1999-06-23
Anticipated expiration: 2008-02-19
Also published as: KR19990031521U

Abstract

The utility model relates to an intermittent friction type wheel hub transmission changer used for the positive direction and the negative direction for bicycles. The utility model is characterized in that a reverse drive speed transformation section and a drive transformation section are arranged in the wheel hub of a rear wheel of a bicycle. A rod is arranged, which can make the bicycle move forward through forward rotation and idle rotation like the existing bicycle; the utility model can also make reverse driving force which is input by a pedal shaft output toward one direction at all times. A wheel hub power transmission device is arranged in the wheel hub of the rear wheel of the bicycle which is provided with a variable speed device by using a planetary gear. The utility model is composed of a drive section (A), a reserve drive section (B) and a second star wheel component (52).

Description

The forward and reverse wheel hub driving transform of friction-type bicycle use at intermittence device

The utility model relates to the forward and reverse wheel hub driving transform of the bicycle use device that adopts the friction mode at intermittence, in more detail, relate to reverse drive speed changing device and driving transform device are set in bicycle rear wheel hub shell, bar is set makes bicycle advance forward by forward rotation and idle running with the same in the past, the reverse actuating force of pedal shaft that can also make input for always to the advancing drive power of a direction, promptly with the power changing apparatus of the bicycle wheel of forward rotation outputting power.

Generally, because bicycle can only promptly advance by just driving forward on a direction, so, when advancing for a long time, there is cyclist's the very fast fatigue of pin, also have the unbalanced problem of muscle development of pin.

Thereby, in order to improve such problem, a lot of inventors make great efforts to develop be used to make can only the common bicycle that drives on the direction can be on two directions device driven.

So far, the two direction actuating devices of developing roughly can be divided into the method for utilizing equipment gear, utilize the method for finishing bevel gear cuter and utilize planetary method.

Actuating device as two directions of utilizing equipment gear, representational is the invention (EPO notification number 0,369,925) of Mantzoursos etc., the invention that utilizes finishing bevel gear cuter and power-transfer clutch is the invention (US Patent 5,435,583) of FosterShi, and to utilize planetary representational invention be the applicant the patent application of Korea S 95-47910 number.

But, these inventions, because all be installed in the outside of pedal shaft, so when being installed in these devices on the bicycle, also exist to the framework outside of bicycle and give prominence to, the cyclist is in the way when driving bicycle, in addition, because above-mentioned outshot, but be difficult to be installed in problem on the bicycle of assembly unit carrying of nearest exploitation.

Thereby, according to above problem etc., developed the derailleur that the running gear of two above-mentioned directions can be installed on the rear vehicle shaft.

Promptly, the transmission system of above-mentioned bicycle, be when the cyclist drives bicycle, reduce foot fatigue, in addition, because use the energy that is added on the pedal expeditiously, so that the pedal ring of pedal is average, and then make the foot-operated power that is added on the pedal keep certain device, adjust the gear ratio of drive sprocket and driven sprocket, make the walking of bicycle, just can apply the power that adapts with walking resistance.

Such change-speed box has outer the dress with change-speed box and interior dress change-speed box.

Promptly, so-called outer dress is used change-speed box, is to hang up chain on pedal shaft several sprocket wheels different with the diameter on being arranged on pedal shaft, directly changes the device of gear ratio, dress is used change-speed box in so-called, is the device that planetary wheel change gear ratio is set in the inside of rear wheel hub shell.

In dress use transmission system, compare with transmission system with outer dress, have miniaturization, and can block entering of dust and foreign matter etc., and owing to being arranged in the hub shell, so even be subjected to the advantage that exterior impact also is difficult to damage etc.

Owing to have such advantage, thereby interior dress is widely used in generally with on the bicycle with change-speed box, with interior dress with one of relevant invention of transmission system, be recently No. the 97th～25869, the applicant's of korean application patent application.

The basic formation of foregoing invention partly is made of: driving transform part, direction transformation part, reverse drive speed transformation.Wherein, the driving transform part is by constituting with the lower part: columnar driven chain roller box, can be installed in rotationally on the hub spindle of rear wheel, and on certain interval, positive and negative direction ratchet (pawl) is obtained elastic force in a circumferential direction and is supported it; The ratchet ring set collar of hub shell can combine with the positive dirction ratchet of this driven chain roller box; Also have ratchet ring, can combine with the reversing sense ratchet of driven chain roller box; The driving transform of Gou Chenging is partly imported the positive and negative propulsive effort of driven sprocket like this.Wherein, changes direction end divides by constituting with the lower part: the 1st bearing support, in conjunction with above-mentioned ratchet ring and can drive planetary wheel etc. and rotate relative to hub spindle; The 1st sun gear can drive planetary wheel of above-mentioned the 1st bearing support or the like; The 2nd bearing support can drive rotations such as the 1st sun gear and planetary wheel and be fixed on the above-mentioned hub spindle; The 2nd sun gear can drive the rotations such as planetary wheel with above-mentioned the 2nd bearing support, and the ratchet that the positive dirction that can give prominence to is installed makes and keep elastic force on a side circumferencial direction on positive dirction; The direction transformation part that constitutes like this can be transformed into forward rotation with the reverse drive force direction of above-mentioned driving transform part.Wherein, reverse drive speed transformation part is by constituting with the lower part: the 3rd sun gear, can with the positive dirction ratchet combination of the 2nd sun gear of this direction transformation part, and then can combine with the fixed ratchet wheel on being fixed on above-mentioned hub shell; The 3rd bearing support can be driven by gear and above-mentioned the 3rd sun gear and planetary wheel etc. integratedly with above-mentioned hub spindle and rotate; Power-transfer clutch is mounted to and can slides, and makes the interior inclination of the 3rd bearing support and above-mentioned the 2nd sun gear to slide, and keeps elastic force by exterior bar; The reverse drive speed changing device of Gou Chenging can make the forward rotation of above-mentioned direction transformation part slow down and idle running like this.

Promptly, above-mentioned formation, the driven chain roller box that positive and negative direction ratchet is housed in wheel hub constitutes the driving transform part, this driving transform is partly by importing the forward rotation and the backward rotation of driven sprocket, for example, when the input forward rotation, the positive dirction ratchet of driven chain roller box makes the ratchet set collar forward rotation that is fixed on the hub shell, just can export forward drive power to hub shell.

In addition, by above-mentioned driving transform part and bearing support device, constitute side by side and link the reverse drive speed transformation part that drives, if with the above-mentioned reverse drive of importing on the contrary, then the reverse drive ratchet of driven chain roller box drives bearing support device etc., links the reverse drive speed transformation part that drives thereby it is delivered to these bearing support devices etc.

Especially, the formation of inverted speed conversion fraction is, when the evolution of the power-transfer clutch that can operate according to exterior bar is transformed to turn with above-mentioned driving transform reverse actuating force partly, can make speed and the same speed or the finally conversion transmission in hub shell of low-tach speed of input, can also make the reverse actuating force of input be transformed to idle running.

But, in above-mentioned invention, because the pawl-and-gearing of variable part and reverse drive part etc. usually is interlocked, so under the state of inoperation bar, bicycle is advanced backward, also exist, when positive and negative driving, because of overload damages gear, or because of meshing generation noise and the problem that produces play.

Problem in view of above-mentioned conventional art, the purpose of this utility model be to provide a kind of intermittence the friction type bicycle use just, reverse wheel hub driving transform device, it is provided with reverse drive speed transformation partial sum driving transform in bicycle rear wheel hub shell partly makes bicycle equally with bicycle in the past advance forward when just driving and dallying, the reverse actuating force of pedal shaft that can also be by will input is always to a direction outputting power, make the motorist when bicycle is advanced forward, make the efficiency optimizationization of advancing, reduce fatigue simultaneously, seek balanced muscle development.

To achieve these goals, the utility model is equipped with in the bicycle rear wheel wheel hub that utilizes planetary transmission system interior, is the feature of its technology on constituting with the structure that is made of drive part, reverse drive conversion fraction, the 2nd ratchet part.Wherein, drive part is by constituting with the lower part: the driven chain roller box can combine with it on hub spindle with moving about; Idler gear is with the meshing linkedly rotation of the gear of the front end that is formed on this driven chain roller box; The 1st bearing support, being used for the turning cylinder is that supporting-point supports this idler gear it can be rotated; Ring gear is with the interlock linkedly of above-mentioned idler gear; The 3rd ratchet is set on the outer peripheral face of this Ring gear; The 3rd ratchet part is used for the 3rd ratchet of interlock off and on transmission of power is arrived hub shell.Wherein, the formation of reverse drive conversion fraction is, the action of the bar that the side by being arranged on above-mentioned the 1st bearing support and being arranged to can slide on hub spindle makes driving idle running and forward and reverse rotation of drive part.Wherein, the 2nd ratchet part is used to support this reverse drive conversion fraction.

Thereby, the utility model is by rotating pedal in the counterclockwise direction, setting drives forwards the conversion drive part of the reverse drive of bicycle, selection according to the motorist, can freely walk forward and walk forward by reverse drive, make the optimized while of travel efficiency, can seek to reduce fatigue significantly and seek balanced muscle development.

That is, be passed to the power of above-mentioned drive part or reverse drive conversion fraction, act on hub spindle through mulitpath, particularly in drive part, the transmission of reverse actuating force also can make bicycle rear wheel low speed, idle running or walking at a high speed.

If when the path of transmission of power being divided into the bar action according to the utility model and bar describe when removing, then as follows.

When 1) bar moves

A) when the pedal turn, walk forward

The power that is produced by pedal arrives driven sprocket of the present utility model through crank, drive sprocket, chain in proper order.

Driven sprocket, be passed on hub spindle can move about driven chain roller box and the idler gear and the 1st bearing support of combination, owing to make the hub shell forward rotation, thereby can the forward drive rear wheel via meshing the 1st ratchet, Ring gear, the 3rd ratchet at this railway carriage.

B) idle running during the pedal backward rotation

Because block power by pedal, driven sprocket, driven chain roller box, idler gear and the 1st bearing support, so when the pedal backward rotation, idle running.

When 2) bar is removed

A) when the forward rotation of pedal, walk forward

Owing to be passed to pedal, driven sprocket, driven chain roller box, idler gear and the 1st bearing support, via making the hub shell forward rotation with meshing the 1st ratchet, Ring gear, the 3rd ratchet of this bearing support, thereby can the forward drive rear wheel.

B) walking forward during the pedal backward rotation

In order to make pedal, driven sprocket, the conversion of driven chain roller box direction, bicycle is walked forward via idler gear and Ring gear, the 3rd ratchet, hub shell.

Fig. 1 shows the figure that adopts the positive and negative driving transform device of friction-type bicycle use at intermittence of the present utility model to be made the part of time spent by bar.

Fig. 2 is the amplification profile diagram of obtaining along the a-a line of Fig. 1.

Fig. 3 is the figure that gets the part of the 1st ratchet of the present utility model and the 2nd ratchet.

Fig. 4 is the figure that shows according to the part under the state of the positive and negative driving transform device of friction-type bicycle use at intermittence of the present utility model when bar is removed.

Fig. 5 is the amplification profile diagram of obtaining along the b-b line of Fig. 4 of the present utility model.

Fig. 6 is the skiagraph of showing according to another embodiment of the positive and negative driving transform device of friction-type bicycle use at intermittence of the present utility model.

Fig. 7 is the amplification profile diagram of obtaining along the c-c line of Fig. 6.

Fig. 8 is the amplification profile diagram of obtaining along the d-d line of Fig. 6.

Fig. 9 is the amplification profile diagram of obtaining along the e-e line of Fig. 6.

If it is describe embodiment 1 of the present utility model with reference to the accompanying drawings in detail, then as follows.

The utility model as shown in Figure 1, can be installed in hub shell (200) on the hub spindle (100) rotationally by bearing etc., from its side, section roughly becomes " H " shape, reverse drive conversion fraction described later (B) and drive part (A) are installed on its side, the driven chain roller box (20) that is fixed with driven sprocket (10) that is linked driving by not shown pedal shaft and chain is set on hub spindle.

On the periphery of above-mentioned hub shell (200), in the past multistage speed conversion also can be installed link above-mentioned reverse drive conversion fraction (B) and drive part (A) etc. with part and drive.

In addition, the periphery of above-mentioned hub spindle (100) is be formed with screw thread and spline bar-shaped, this hub spindle (100), pass the central authorities of hub shell (200), install by the retaining element of nut (101) and packing ring (102) etc. at left and right sides as shown in Figure 1, can keep air-tightness with hub shell (200).

And then, the bar (30) that can slide is set, and the action that is provided with by this bar (30) can make the rotation idle running of drive part (A) and the reverse drive conversion fraction (B) of forward and reverse driving on hub spindle (100).

At this moment, reverse drive conversion fraction (B) can rotate by the 2nd ratchet part (520) is fixing.

In addition, the driven chain roller box (20) of integrally formed driven sprocket (10) can be set rotationally, between above-mentioned driven sprocket (10) and hub spindle (100), driving bearing (120) be set at an end of above-mentioned hub spindle (100).

Then, in the front end neighboring of above-mentioned driven chain roller box (20) along formative gear (21), being provided in the 1st bearing support (300) with turning cylinder (40) with the idler gear (400) of this gear (21) interlock linkedly is the rotary while of supporting-point, and above-mentioned idler gear (400) is meshing with the inboard gear (501) of Ring gear (500).

Then, an end of above-mentioned Ring gear (500), be arranged to the 3rd ratchet (630) off and on ratchet (531) interlock of the 3rd ratchet part (530).

In addition, the other end of above-mentioned Ring gear (500), that is, and the neighboring of the 1st bearing support (300) along on form the 1st ratchet part (510).Then, so constitute the foreign side of above-mentioned the 1st bearing support (300), driving transform part (B) is set the driving of drive part can be dallied and forward and reverse rotation.Promptly, above-mentioned reverse drive conversion fraction (B), the 2nd bearing support (310) is set on the relative direction on the 1st bearing support (300) as shown in Figure 1, being provided with turning cylinder (40) in the 2nd bearing support (310) is rotary the 1st ratchet of supporting-point (610) and the 2nd ratchet (620), at above-mentioned the 1st ratchet (610), between the 2nd ratchet (620), as Fig. 2 or shown in Figure 3, by the changes direction end spare with elastic force (640) counter-rotating mutually, make the 1st ratchet (511) interlock of the 1st ratchet (610) and the 1st ratchet part (510), the 2nd ratchet (521) interlock of the 2nd ratchet (620) and the 2nd ratchet part (520).

And then the friction ring (700) that makes above-mentioned the 1st bearing support (300) remain between certain angular turn is set between the 2nd ratchet part (520) and the 2nd bearing support (310).

In addition, make above-mentioned the 2nd ratchet (620) remove the bottom that meshing signature pin (830) is set at the 2nd ratchet (620) from the 2nd ratchet (521) of the 2nd ratchet part (520), above-mentioned signature pin (830) is configured to by the extruder member (810) on the end that is arranged on the bar (30) that can slide on the hub spindle (100), and can be at knee-action by the tilt component (820) of this extruder member (810) action.

And then, between above-mentioned tilt component (820) and the 2nd ratchet part (520), elastomeric element (840) is set, make the above-mentioned tilt component of supporting (820) always to keep certain elastic force to extruder member (810) one sides.

Below, the effect of above-mentioned such positive and negative driving transform device of friction-type bicycle at intermittence of the present utility model that constitutes is adopted in explanation when being divided into the bar action, when bar is removed.

1) below, make bicycle have state with the same function of in the past bicycle with reference to Fig. 1 description operation bar.

A) walking of advancing during the pedal forward rotation

Operation by bar (30), the pressure that extruder member (810) is subjected to elastomeric element (840) advances to the arrow directions X of Fig. 1, simultaneously owing to the tilt component (820) that is arranged on above-mentioned extruder member (810) front end advances to same direction, thereby the signature pin (830) that is positioned on this tilt component (820) rises, the 2nd ratchet (620) is risen, and the 2nd ratchet (620) is removed interlock from the ratchet (521) of the 2nd ratchet part (520).Then, the power order that produces from pedal arrives driven sprocket (10) via not shown crank, drive sprocket, chain.

Above-mentioned driven sprocket (10) to driven chain roller box (20) transferring power that can be combined on the hub spindle (100) with moving about.

Then, as shown in Figure 1, rotate along last gear (21) idler gear (400) by the neighboring that is formed on above-mentioned driven chain roller box (20), because this idler gear (400) rotates, the 1st bearing support (300) rotates.

And then, the turning effort of above-mentioned the 1st bearing support (300), as Fig. 1 or shown in Figure 2, by 1st ratchet (610) meshing off and on the ratchet (511) of the 1st ratchet part (510), the 1st ratchet part (510) rotates, meanwhile, the 1st ratchet part (510) and the Ring gear (500) that forms rotate, this turning effort is passed to the neighboring that is formed on above-mentioned Ring gear (500) the 3rd ratchet (630) along an end, the 3rd ratchet part of going up by interim interlock at the 3rd ratchet (630) (530) makes hub shell (200) turn, because the reverse drive rear wheel, thereby the bicycle walking of advancing.

At this moment, when the transmission of propulsive effort as described above, the 2nd ratchet (620) and the 2nd ratchet part (520) are kept the state of removing interlock.

B) during the backward rotation of pedal, idle running

As shown in Figure 1, transmission of power is to pedal, driven ratchet (10), driven ratchet box (20).

Then, the neighboring by being formed on above-mentioned driven ratchet box (20) is along last gear (21), and idler gear (400) rotates, because the rotation of this idler gear (400), block power by the 1st bearing support (300), thereby when the backward rotation of pedal, dally.

At this moment, as mentioned above, when propulsive effort transmitted, even the 1st bearing support (300) is a no load condition, bicycle was at a stop, and remain self and rotate, and power is not delivered to the state in the wheel hub case (200).

When 2) bar is removed

A) when the turn of pedal, the walking of advancing

As shown in Figure 4, the power that produces from pedal arrives driven sprocket (10) through not shown crank, drive sprocket, chain in proper order.

Above-mentioned driven sprocket (10) is incorporated into driven chain roller box (20) transferring power (20) on the hub spindle (100) to moving about.

Then, the neighboring that process is formed on above-mentioned driven chain roller box (20) is along last gear (21), and idler gear (400) rotates, because the rotation of this idler gear (400), the 1st bearing support (300) rotates.

And then, the turning effort of above-mentioned the 1st bearing support (300), because the 1st ratchet (610) of interlock off and on the 1st ratchet part (510), when the 1st ratchet part (510) rotates, the Ring gear (500) that forms with the 1st ratchet part (510) rotates, this turning effort is passed to the 3rd ratchet (630) of an end on the edge, neighboring that is formed on above-mentioned Ring gear (500), the 3rd ratchet part (530) through the interim interlock of the 3rd ratchet (630), make hub shell (200) forward rotation, because the forward drive rear wheel, bicycle is walked forward thus.

B) when the backward rotation of pedal, the walking of advancing

As Fig. 4 or shown in Figure 5, transmission of power is to pedal, driven sprocket (10), driven chain roller box (20).

Then, neighboring by being formed on above-mentioned driven chain roller box (20) is along last gear (21), idler gear (400) rotates, the rotation of this idler gear (400), make Ring gear (500) and the 1st ratchet part (510) rotation with idler gear (400) interlock, change and rotate oppositely, when 3rd ratchet (630) of this backward rotation on an end on the edge, neighboring that is formed at above-mentioned Ring gear (500) hangs on the 3rd ratchet (531) of the 3rd ratchet part (530), be delivered on the 3rd ratchet part (530) power with the bonded block (201) of hub shell (200) when combining, make above-mentioned hub shell (200) turn, the forward drive rear wheel, the bicycle walking of advancing thus.

At this moment, friction ring (700) moves between P ' some maintenance the 2nd bearing support (310) at the P point of the 1st bearing support (300) from Fig. 5, and ratchet (511) interlock of the 2nd ratchet (620) and the 2nd ratchet part (521) makes the 1st bearing support (300) fixing.

Below, describe embodiment 2 of the present utility model in detail with reference to accompanying drawing.

Fig. 6 is another embodiment that shows the positive and negative driving transform device of bicycle of employing friction-type at intermittence of the present utility model, at first, pays prosign with embodiment 1 described identical shape and title, and omits its explanation.

Embodiment 2 is by constituting with the lower part: driven chain roller box (20) is combined on the hub spindle (100) and can moves about; The 1st idler gear (410), be arranged in be arranged at this driven chain roller box (20) the neighboring along in last the 1st bearing support (300), with turning cylinder (40) is supporting-point, the 1st ratchet (610) and the 2nd ratchet (620) are by changes direction end spare (640) action relatively mutually, above-mentioned the 1st ratchet (610) is configured to the 1st ratchet (511) interlock off and on the 1st ratchet part (510), the 2nd ratchet (620) is configured to the 2nd ratchet (521) interlock off and on the 2nd ratchet part (520), be used for by with the interlock change of direction of the gear (502) of the front end that is formed on above-mentioned the 2nd ratchet part (520); The 2nd bearing support (310), being used for turning cylinder (40) is that supporting-point can support the 1st idler gear (410) rotationally; The 2nd idler gear (420) is used for gathering way with gear (302) interlock that is formed on the front end of above-mentioned the 2nd bearing support (310); The 3rd bearing support (320), being used for turning cylinder (40) is that supporting-point can support the 2nd idler gear (420) rotationally; Ring gear (500) is arranged to cover the outer peripheral face of above-mentioned the 2nd idler gear (420), at the other end the 3rd ratchet (630) is set.

If specifically describe the connection relationship of the positive and negative driving transform device of friction-type bicycle at intermittence that employing constitutes as described above, then as shown in Figure 6, with hub spindle (100) is the center, on driven sprocket (10), form driven chain roller box (20), the neighboring that coats this driven chain roller box (20) along and be formed on the inboard bonded block (201) of hub shell (200) and go up in conjunction with the 1st ratchet part (510) in, at the front end of above-mentioned driven chain roller box (20) the 1st bearing support (300) is set.

Front end at above-mentioned the 1st bearing support (300) is provided with the 2nd ratchet part (520), front end at the 2nd ratchet part (520) is provided with the 2nd bearing support (310), front end at the 2nd bearing support (310) is provided with the 3rd bearing support (320), edge, neighboring at the 3rd bearing support (320) is provided with Ring gear (500), going up setting at above-mentioned the 1st bearing support (300) is supporting-point and mutual the 1st ratchet (610) of action relatively with turning cylinder (40), the 2nd ratchet (620), between above-mentioned the 1st ratchet (610) and the 2nd ratchet (620), changes direction end spare (640) is set, the 1st ratchet (610) is configured to ratchet (511) interlock off and on the 1st ratchet part (510), and the 2nd ratchet (620) is configured to the 2nd ratchet (521) interlock off and on the 2nd ratchet part (520).

And then, above-mentioned driven chain roller box (20) is during being kept at an angle rotation, as obtain the part of the 1st ratchet and the 2nd detent positions, as Fig. 6 or shown in Figure 7, friction ring (700) is set between the inner peripheral surface and the 1st bearing support (300) of the 2nd ratchet part (520).

And then, as Fig. 6 or shown in Figure 8, on the gear (502) of the front end that is formed on the 2nd ratchet part (520), being engaged in the 2nd bearing support (310) with turning cylinder (40) is that supporting-point is arranged to rotary the 1st idler gear (410), meanwhile, be arranged to inboard gear (303) interlock of the 1st idler gear (410) and the 2nd bearing support (310).

Below, as Fig. 6 or shown in Figure 9, at the gear (302) of the front end that is formed on above-mentioned the 2nd bearing support (310) with have between the Ring gear (500) of inboard gear (501), it is that supporting-point can be rotated that the 2nd idler gear (420) is configured to coexist with Ring gear one that the 3rd bearing support (320) goes up with turning cylinder (40), front end in above-mentioned Ring gear (500) is provided with and is formed on the 3rd ratchet (630) that hangs up off and on the inboard ratchet (202) of above-mentioned hub shell (200).

Thereby, if it is the effect of the positive and negative driving transform device of friction-type bicycle at intermittence of the embodiment 2 that constitutes is like that as mentioned above adopted in explanation, then as follows.

A) when the turn of pedal, the walking of advancing

As shown in Figure 6, the power that produces from pedal arrives driven sprocket (10) through not shown crank, drive sprocket, chain in proper order.

Above-mentioned driven sprocket (10), with transmission of power to the driven chain roller box (20) that is combined on the hub spindle (100) with moving about.

Below, as shown in Figure 7, the neighboring that is formed on above-mentioned driven chain roller box (20) is along last the 1st bearing support (300), friction force by friction ring (700), driven chain roller box (20) kept the 1st bearing support during certain angular turn when, above-mentioned the 1st ratchet (610) was engaged in the ratchet (511) of the 1st ratchet part (510), and the turning effort of the 1st ratchet part (510) makes hub shell (200) turn, because the forward drive rear wheel, thereby bicycle is walked forward.

At this moment, the 2nd ratchet (620) is in from the ratchet (521) of the 2nd ratchet part (520) and removes meshing state.

B) when the backward rotation of pedal, the walking of advancing

As shown in Figure 6, transmission of power is to pedal, driven sprocket (10), driven chain roller box (20).

The neighboring that is formed on above-mentioned driven chain roller box (20) leans on the friction force of friction ring (700) that driven chain roller box (20) is rotated in certain angle along last the 1st bearing support (300), thus, the 1st ratchet (610) is when ratchet (511) releasing of the 1st ratchet part (510) is meshing, be engaged on the ratchet (521) of the 2nd ratchet part (520) by changes direction end spare (640) the 2nd ratchet (620), above-mentioned the 2nd ratchet part (520) rotates, meshing the 1st idler gear (410) of gear (502) that this turning effort made and be formed on the front end of the 2nd ratchet part (520) rotates, the turning effort of the 1st idler gear (410) is in the counter-rotational while of the 3rd bearing support (320) that makes Ring gear and dual-purpose, the neighboring that is formed on above-mentioned the 2nd bearing support (310) is rotated along last the 2nd idler gear (420), and make with the Ring gear (500) of the 2nd idler gear (420) interlock and rotate, the turning effort of this Ring gear (500), meshing by the ratchet (202) that forms along the 3rd ratchet (630) of last formation and inside in the neighboring of the front end of Ring gear (500) in hub shell (200), make above-mentioned hub shell (200) forward rotation, forward drive rear wheel, thereby the bicycle walking of advancing.

At this moment, by gear ratio speed is increased with meshing the 2nd idler gear (420) on Ring gear (500).

As mentioned above, because the utility model so arranges the reverse drive conversion fraction, so that as can The positive and negative driving force of conversion driven sprocket is like that at the foreign side of bearing support and the inner drive part that makes Drive idle running and forward and reverse rotation, therefore can obtain following effect.

The 1st, by using selectively bar, just can obtain the effect same with bicycle in the past.

The 2nd, when the driver of bicycle is advanced by reverse drive driving bicycle, can make operation When efficiency optimization and minimizing are tired, can seek muscle is balancedly grown.

The 3rd, by utilizing intermittently friction mode, what just can prevent from taking place is caused by meshing in advance in the past The damage of gear, can seek to enhance product performance by low noise simultaneously.

Claims

1, the forward and reverse wheel hub driving transform of a kind of friction-type bicycle use at intermittence device, it is characterized in that: be equipped with in the bicycle rear wheel wheel hub that utilizes planetary transmission system interior, comprise following formation: drive part, it comprises: the driven chain roller box can combine with hub spindle with moving about; Idler gear is with the meshing linkedly rotation of the gear of the front end that is formed on this driven chain roller box; Be used for the turning cylinder is that supporting-point supports this idler gear and makes its rotary the 1st bearing support; Ring gear is with the interlock linkedly of above-mentioned idler gear; The 3rd ratchet is set on the outer peripheral face of this Ring gear; Be used for above-mentioned the 3rd ratchet of shape ground interlock at intermittence and transmission of power given the 3rd ratchet part of hub shell; The action of end by being set at above-mentioned the 1st bearing support and the bar that can slide on hub spindle makes the driving idle running of drive part and the reverse drive conversion fraction of forward and reverse rotation; Be used to support the 2nd ratchet part of this reverse drive conversion fraction.

2, the forward and reverse wheel hub driving transform of friction-type bicycle use at intermittence as claimed in claim 1 device, it is characterized in that: above-mentioned reverse drive conversion fraction is by constituting with the lower part: extruder member is set at an end of above-mentioned bar; Tilt component by this extruder member action; Make above-mentioned tilt component always keep the elastomeric element of certain elastic force, be set between above-mentioned the 2nd ratchet part and the tilt component; The 1st ratchet and the 2nd ratchet are configured to by above-mentioned tilt component corresponding mutually in the 2nd bearing support; Make the meshing off and on separately signature pin on the ratchet of the 1st ratchet part that forms with above-mentioned Ring gear and the 2nd ratchet part of the 1st ratchet and the 2nd ratchet.

3, the forward and reverse wheel hub driving transform of friction-type bicycle use at intermittence as claimed in claim 2 device, it is characterized in that: between the above-mentioned the 1st and the 2nd ratchet, the direction transformation parts are set, make the above-mentioned the 1st and the 2nd ratchet opposite mutually, the 1st pawl teeth is combined in the 1st ratchet one side of the 1st ratchet part, and the 2nd hook tooth is combined in the 2nd ratchet one side of the 2nd ratchet part.

4, the forward and reverse wheel hub driving transform of friction-type bicycle use at intermittence as claimed in claim 1 device, it is characterized in that: friction ring is arranged between the outer peripheral face and the 2nd bearing support of the 1st bearing support, makes above-mentioned the 1st bearing support obtain the part that the 1st ratchet and the 2nd ratchet are positioned at during with certain angular turn.

5, the forward and reverse wheel hub driving transform of a kind of friction-type bicycle use at intermittence device, it is characterized in that: be equipped with in the bicycle rear wheel wheel hub that utilizes planetary transmission system interior, comprise following formation: the driven chain roller box that can combine with above-mentioned hub spindle with moving about;

The 1st idler gear, it is that supporting-point relatively moves it by the direction transformation parts that the 1st ratchet and the 2nd ratchet are arranged on the 1st bearing support on the periphery that is arranged at this driven chain roller box with the turning cylinder, and be arranged on the 1st ratchet that above-mentioned the 1st ratchet is engaged in the 1st ratchet part off and on, the 2nd ratchet is engaged on the 2nd ratchet of the 2nd ratchet part off and on, by the 1st idler gear and the gear interlock conversion direction that is formed on the front end of above-mentioned the 2nd ratchet part; Be used for the turning cylinder is that supporting-point supports the 1st idler gear and makes its rotary the 2nd bearing support; Be used for the 2nd idler gear that gathers way with the gear interlock that is formed on the front end of above-mentioned the 2nd bearing support; Be used for the turning cylinder is that supporting-point supports the 2nd idler gear and makes its rotary the 3rd bearing support; Be configured to coat the outer peripheral face of above-mentioned the 2nd idler gear, the Ring gear of the 3rd ratchet at one end is set.

6, the forward and reverse wheel hub driving transform of friction-type bicycle use at intermittence as claimed in claim 5 device, it is characterized in that: friction ring is arranged between the 2nd ratchet part and the 1st bearing support, makes the part that during certain angular turn, keeps the 1st ratchet and the 2nd ratchet to be positioned at above-mentioned driven chain roller box.