CN1204287A - Apparatus for changing power direction for bicycle - Google Patents

Abstract

An apparatus for changing power direction for a bicycle is provided. The apparatus for changing power direction roughly including a shaft housing (30), a change ring (40), a carrier (50), a sun gear (60) and a sprocket cap (70) is located between a pedal shaft (20) and a driving sprocket. The shaft housing (30) supports the rotating pedal shaft (20) and controls the carrier (50) by using a plurality of pawls (32) to be released from and inserted into a plurality of openings (31) formed at the inside of a rim of a right cap of the shaft housing (30) when pedaling rearward. The change ring (40) releases and inserts the pawls (32) from and into the shaft housing (30) when pedaling rearward, and the carrier (50) having a first ratchet (51) and a second ratchet (52) at the outside and inside of a left portion thereof, repectively, and a plurality of planetary gears (54) to be rotatably set at a right portion maintains or changes the direction of power from the pedal shaft (20), thereby transmitting the power to a driving sprocket.

Description

The device that is used to change power direction of bicycle

The present invention relates to a kind of device that is used to change the power direction of bicycle, particularly, relate to a kind of device that is installed in the conversion power direction on the bicycle pedal shaft axle sleeve, wherein, by control reverse lever when the treadled cycle forward or backward, bicycle is ahead running all the time, and if necessary, when treadled cycle backward, when behind conventional bicycle, pedaling, also allow idle running.

Usually, bicycle is provided with front-wheel and trailing wheel in the front and back of its vehicle frame, and is provided with a pair of pedal as the power supply source between two-wheeled.Make bicycle obtain propulsive effort by trampling, then through drive sprocket, chain and driven sprocket reach trailing wheel with this propulsive effort.As cyclist forward to pedal the time, this common bicycle is with regard to ahead running; When backward to pedal the time, by means of a single direction ratchet of rear wheel hub, the trailing wheel no-load of this bicycle is rotated, and this no-load of trailing wheel is rotated and is called as " idle running ".

In addition, some inventions of the new accessory of relevant bicycle are disclosed, these neoteric accessories make only allow unidirectional pedal the ordinary bicycle of stepping on can double-way juggling.Particularly, will be described herein-after people's such as people such as Mantzoursos and Foster invention.

According to people's such as Mantzoutsos invention (European patent communique No.0,369,925), two gears are installed, equipment gear of installing between two discerptible gears on the pedal axle.At this, when being under the disengaged condition to pedal at equipment gear, the bicycle of this invention can move as ordinary bicycle.But, when equipment gear is in coupled situation and backward to pedal the time, by means of equipment gear, the rotation direction of pedal axle is changed, so bicycle can ahead running.

On the other hand, according to people's such as Forster invention (U.S. Patent No. 5,435,583), gear case of installing on the pedal axle, comprising two gears, two power-transfer clutchs and the helical wheel between the gear teeth of two gears between the two.At this, when power-transfer clutch connected with right gear and scrunches, the bicycle of this invention can move as ordinary bicycle.But when power-transfer clutch connected with left gear and scrunches backward, by changed the rotation direction of pedal axle by helical wheel, bicycle can ahead running.

Can drive forwards when scrunching backward with regard to adopting an intermediate gear for the two-way foot pedal apparatus of bicycle, above-mentioned two inventions are highly significant.But, because the required masterpiece of conversion power direction is used for the wearing and tearing that privileged site produces, make the lost of life of two-way foot pedal apparatus, and the device of change power direction is convenient inadequately in operation.

In order to overcome above-mentioned shortcoming, a kind of two-way foot pedal apparatus is disclosed in the patent application No.94-13391 of Korea S.According to this patent application, between end of pedal axle and drive sprocket, form a predetermined enclosure space, in the outside and the inside in this space two single direction ratchet are housed.In addition, be provided with a ratchet and a reverse lever in enclosure space, several planetary wheels and this ratchet are rotatably fixing, and reverse lever is used to control the locking and the disengagement of outer single direction ratchet.Adopt the two-way footstep mechanism of bicycle of this two-way foot pedal apparatus as mentioned below.

When trampling forward, pedal, ratchet and drive sprocket unitary rotation make the bicycle ahead running.Yet, when scrunching backward, make outer single direction ratchet replace interior single direction ratchet to work by means of reverse lever.At this, two kinds of situations are arranged, outer ratchet lock and disengagement.At first, ratchet lock and backward to pedal time the outside making, some planetary wheels rotate around the axle of himself, thereby change turning to of pedal axle, then power are reached drive sprocket from the pedal axle, drive the bicycle ahead running thus.Secondly, ratchet is thrown off and backward to pedal the time, planetary wheel rotates and the while rotates around the pedal axle with the ratchet one common peripheral when making outside.Consequently, power can not reach drive sprocket from the pedal axle, causes pedal idle running.

According to the above-mentioned patent application No.94-13391 of Korea S, power is disperseed to prevent that the power because of the conversion power direction produces from concentrating on a specific position by adopting some planetary wheels.Therefore, prolonged in the life-span of this two-way foot pedal apparatus, and can change the rotation direction of pedal axle easily by adopting reverse lever.In addition, owing to adopt small but excellent true part, two-way foot pedal apparatus can move effectively.

But in the above-mentioned patent application No.94-13391 of Korea S, the production in enormous quantities of part and the assembling of each part are very difficult, and this two-way foot pedal apparatus can not be directly installed on the common bicycle, and consequently tackling its part carries out local improvement.In addition, the reversed load that produces when the post-tensioning bicycle may damage and respectively form member.

As improvement invention to the patent application No.94-13391 of Korea S, one object of the present invention is to provide a kind of device that is used to change power direction that is used for bicycle, by improving the shape of respectively forming member, make it be suitable for simple the manufacturing and assembling, can produce device of the present invention on a large scale.By improving part and adopting auxiliary device, device of the present invention can directly be contained on the conventional bicycle, and can prevent the reversed load part of damage simultaneously.

The device that is used to change power direction of the present invention comprises the basic composition element of bicycle, the drive sprocket that forms as pedal axle, trailing wheel, on the pedal axle and rotate with the pedal axle reaches the driven sprocket of trailing wheel and the chain that connects drive sprocket and driven sprocket with the propulsive effort of drive sprocket.Essential characteristic of the present invention is: form in the enclosure space between pedal axle and drive sprocket and be somebody's turn to do " being used to change the device of power direction ".At this, the shape of part that is used to change the device of power direction in order to composition is hollow cylindrical, annular or gear type.

The device that of the present invention between pedal axle and drive sprocket is used to change power direction roughly comprises an axle sleeve, a commutative ring, chuck, a sun gear and a chain wheel cover.The function of each member is as follows.

The sleeve supporting that commutative ring, chuck and sun gear be housed the pedal axle that rotates and simultaneously by adopt a plurality of can be from the bluff pieces that the inboard a plurality of openings that form in the edge of the right cover of axle sleeve, deviate from and insert, after control chuck when pedaling.When after when pedaling, commutative ring makes bluff piece throw off axle sleeve and inserts axle sleeve, and the outside of its left part and inboard be respectively equipped with ratchet and rotatably fix a plurality of planetary chucks at its right part keep or change direction from the power of pedal axle, thus power is reached drive sprocket.Sun gear is with when the pedal axle connects, and the propulsive effort of pedal axle is reached chuck.In addition, the chain wheel cover that the right-hand member in its inboard, edge is provided with a gear receives the power from chuck, makes the bicycle operation of forging ahead forever, with pedal forward and backward scrunch orientation independent.

Therefore, under the situation that this device that is used to change power direction is housed on the bicycle, when forward to pedal and backward to pedal the time, the bicycle ahead running.Be used to change the device of power direction different aspect constructional delails and the steering unit as the of the present invention of a kind of two-way foot pedal apparatus with common two-way foot pedal apparatus.In addition,, optimized the shape of each element, prevented the load concentration on a privileged site thus according to the device that is used to change power direction of the present invention.And all composition members constitute an integral body, have simplified its fitting process thus.This device that is used to change power direction has adopted a reverse lever, so that the described reversing arrangement of easy operating, but also adopted a device that will be used to change power direction to be contained on the ordinary bicycle and the subring that need not carry out any transformation to ordinary bicycle.

Brief description of drawings

Fig. 1 is the cutaway view of device that is used to change power direction according to bicycle of the present invention;

Fig. 2 is the exploded perspective illustration that is used to change the device of power direction according to of the present invention;

Fig. 3 is the right elevation that is illustrated in according to an embodiment of the sun gear that device adopted that is used for changing power direction of the present invention;

Fig. 4 A is the work scheme drawing that is used to change the device of power direction, promptly when commutative ring allows first bluff piece to deviate from from the opening of axle sleeve, along the cutaway view of the line A-A of Fig. 1;

Fig. 4 B is the work scheme drawing that is used to change the device of power direction, promptly when commutative ring stops first bluff piece to be deviate from from the opening of axle sleeve, along the cutaway view of the line A-A of Fig. 1;

Fig. 5 is used to change the cutaway view of the device of power direction along the line B-B of Fig. 1;

Fig. 6 is the cutaway view of device that is used to change power direction according to a preferred embodiment of the present invention;

Fig. 7 is the right elevation that is used for changing the axle sleeve that device adopted of power direction shown in Figure 6;

Fig. 8 is the left view that is used for changing the chuck that device adopted of power direction shown in Figure 6;

Fig. 9 is the left view that is used for changing the chain wheel cover that device adopted of power direction shown in Figure 6;

Figure 10 is the right elevation according to the device of the control commutative ring of another embodiment of the present invention; With

Figure 11 is according to the cutaway view of further embodiment of this invention when the device that will be used to change power direction is contained on the ordinary bicycle.

Now the present invention is described in detail in detail with reference to Fig. 1 to Fig. 5.

As depicted in figs. 1 and 2, axle sleeve 30, commutative ring 40, chuck 50, sun gear 60 and chain wheel cover 70 order on the pedal axle of bicycle is connected, constitute the holistic device that is used to change power direction by the outside that captive nut 90 is fixed on chain wheel cover 70.The structure of each part and function thereof will in turn be described as follows.

Axle sleeve 30 is supporting the pedal axle 20 that rotates, and in the inboard at the axle sleeve 30 right edges that cover a plurality of openings 31 is arranged, and a plurality of first bluff pieces 32 insert in the above-mentioned opening.In addition, first gear 61 that is used for controlling commutative ring 40 is assemblied in a hole 33 that processes on the sidewall of right side cover.Axle sleeve 30 with said structure is clamping commutative ring 40, chuck 50 and sun gear 60 sequentially, and when backward to pedal the time, this axle sleeve has the function that makes chuck 50 rotations or prevent chuck 50 rotations simultaneously by means of first bluff piece 32 of the edge that is placed on axle sleeve 30.At this, between the axle sleeve and first bluff piece 32, insert a spring, so that first bluff piece 32 flexibly is fixed in the opening 31.

Commutative ring 40 has one second gear 41 in its side towards the pedal axle, and a plurality of holes 42 are arranged on its surface portion.Second gear 41 and 81 engagements of first gear are with rotating exchange ring 40, and hole 42 is used to allow first bluff piece 32 to stretch out or withdraws.When first bluff piece 32 slipped in the hole 42, chuck 50 can not rotate, and when commutative ring 40 with the opening 31 of first bluff piece 32 retaining at axle sleeve 30 in the time, chuck 50 can rotate.

The cylindrical chuck 50 of hollow has first ratchet 51 and second ratchet 52 respectively in the outside and the inboard of its left part, and has a ring 53 that is provided with a plurality of holes at its right part, wherein left part and right part are unified into an integral body, thereby by means of the compensating-gear shaft 55 in ring 53 that a plurality of planetary wheels 54 are rotatably fixing.First bluff piece, 32 engagements of first ratchet 51 and axle sleeve 30 with chuck 50 of said structure, and second bluff piece 62 of second ratchet 52 and the 3rd gear 61 that hereinafter will illustrate meshes.On the other hand, the 3rd gear 61 engagement of the inside of the planetary wheel 54 of chuck 50 and sun gear 60, and its outside with hereinafter the 4th gear 71 of chain wheel cover 70 inboards that illustrate is meshed.

By keeping or change direction from the power of pedal axle 20, chuck 50 has power is reached the function of chain wheel cover 70 from pedal axle 20, and this also is a most important characteristic of the present invention.The planetary wheel 54 of chuck 50 will disperse because of changing the power that power direction concentrates on the privileged site, and planetary number preferably eight.

Sun gear 60 is for the cylindrical of hollow and have step, and the less left part of its diameter has a plurality of opening 63, the second bluff pieces 62 can be arranged in this opening in the outside; There is the central opening of a hexagonal spline shape inboard of left part, thereby its left part can integrally be fixed with pedal axle 20.In addition, the right part that the diameter of sun gear 60 is bigger has the 3rd gear 61 in its outside.In the sun gear 60 with said structure, second bluff piece 62 meshes with second ratchet 52 of chuck 50, and the 3rd gear 61 is meshed with the planetary wheel 54 of chuck 50.At this, the quantity of second bluff piece preferably four.

At this, available following method provides elasticity for first and second bluff pieces 32 and 62.At first, below bluff piece, insert a disc spring or sheet spring.Secondly, as shown in Figure 3, on each bluff piece, form a groove, connect each bluff piece by an annual spring 65 then, so that linear tension to be provided by a predetermined angle.

In addition, according to the present invention, first bluff piece 32 and commutative ring 40 are positioned at the outside of chuck 50, only control chuck 50 when pedal axle 20 backward rotation.And second bluff piece 62 is positioned at the outside of sun gear 60, allows chuck 50 unidirectional rotation when rotating forward.

Because sun gear 60 integrally connects with pedal axle 20, sun gear 60 reaches chuck 50 with power from pedal axle 20 when rotating along the direction identical with the rotation direction of pedal axle 20.

On the right side of Fig. 1, chain wheel cover 70 has the 4th gear 71 in the inboard at its edge, a plurality of screws or geometrical clamp 72 are arranged in the outside at its edge, thereby multiple stage drive sprocket 73 and chain wheel cover are linked.In addition, bearing 74 is fixed on the center of chain wheel cover 70, and therefore, chain wheel cover 70 can rotate on pedal axle 20 independently flexibly.Have the 4th gear 71 and planetary wheel 54 engagements of the chain wheel cover 70 of said structure, thus, receive the power of pedal axle 20 through chuck 50.

Chain wheel cover 70 rotates forward all the time, and is irrelevant with the rotation direction of pedal axle 20.

In addition, the sequence number among the Fig. 1 that does not above address 10,11,21 and 22 is represented bicycle rack, pedal axle axle sleeve, bearing and packing ring respectively.

When the chain wheel cover 70 on making axle sleeve 30 and bicycle pedal shaft 20 links, between the two, form an osed top space, in this space, commutative ring 40, chuck 50 and sun gear 60 fit together each other with meshing, and make captive nut 90 be fixed on the outside of chain wheel cover 70, the device that is used to change power direction that forms a whole thus.

Single-piece is used to change the device of power direction and adorns by following der group.At first, pedal axle 20 rotatably is fixed in the axle sleeve 30, sequentially assembles commutative ring 40, chuck 50, sun gear 60 and chain wheel cover 70 then, and with axle sleeve 30 in pedal axle 20 centerings.Then, captive nut 90 is fixed on the outside of chain wheel cover 70, constitutes the device that a single-piece is used to change power direction thus.

In addition, the reverse lever 80 that is used to control commutative ring 40 is fixed on the sidewall of axle sleeve 30 and with first gear 81 and links.Therefore, reverse lever 80 utilizes the mobile commutative ring 40 that makes of first gear 81 to move.

The present invention who below elaboration is had said structure is used to change the operation and the effect of the device of power direction.

For convenience of explanation, operation of the present invention be by method of operation is categorized as " the preceding ahead running of pedaling ", " ahead running of afterwards pedaling " and " afterwards pedaling idle running " illustrated.

At first, " the preceding ahead running of pedaling " refers to when cw drives pedal axle 20 (this direction is to be as the criterion when observing bicycle with respect to the service direction of bicycle from the right side, and this regulation also is applicable to hereinafter), the bicycle ahead running, as shown in Figure 4 and Figure 5.At this, transmit power as described below from pedal axle 20.

When cw drove pedal axle 20, sun gear 60 together clockwise rotated with pedal axle 20.At this, because second bluff piece 62 and 52 engagements of second ratchet, chuck 50 rotates in the same way with pedal axle 20.Therefore, when the 4th gear 71 with planetary wheel 54 ingear chain wheel covers 70 clockwise rotated, planetary wheel 54 itself did not rotate.So pedal axle 20 rotates by identical direction mutually with chain wheel cover 70, drives the bicycle ahead running thus.

Secondly, " ahead running of afterwards pedaling " refers to when conter clockwise drives pedal axle 20, the bicycle ahead running.Transmit power as described below at this from pedal axle 20.In this operation, shown in Fig. 4 A,, first bluff piece 32 and first ratchet 51 are meshing with each other by control commutative ring 40.

When driving pedal axle 20 in the counterclockwise direction, sun gear 60 together rotates counterclockwise with pedal axle 20.At this,, power can not be reached chuck 50 because second bluff piece 62 slips over from second ratchet, 52 tops.Meanwhile, as shown in Figure 5, the 3rd gear 61 of sun gear 60 reaches the planetary wheel 54 that is meshed with sun gear 60 with power, and planetary wheel 54 is clockwise rotated.At this, the rotation of planetary wheel 54 is to providing a power that makes its rotation with the planetary wheel 54 whole chucks 50 that connect.But shown in Fig. 4 A, because first ratchet, 51 engagements of first bluff piece 32 and chuck 50, chuck 50 can not rotate widdershins.Therefore, only when planetary wheel 54 rotates as illustrated in fig. 5, clockwise rotate with planetary wheel 54 ingear chain wheel covers 70.By means of this operation, through the device that is used to change power direction of the present invention, change the C.C.W. propulsive effort direction that acts on the pedal axle 20, chain wheel cover 70 is clockwise rotated.

The 3rd, " afterwards pedaling idle running " refers to when conter clockwise drives pedal axle 20, idle running only occurs because power can not reach chain wheel cover 70, and bicycle can not move.At this, transmit power as described below from pedal axle 20.In order to carry out this operation, by control commutative ring 40 shown in Fig. 4 B, first bluff piece 32 that should make axle sleeve 30 is not meshing with each other with first ratchet 51 of chuck 50.

At this, except since first bluff piece 32 with the engagement of first ratchet 51, outside chuck 50 rotated counterclockwise around pedal axle 20 itself when planetary wheel 54 rotates, the power transmission process that is used for aforesaid operations was identical to the process of the step that the conter clockwise masterpiece is used for chuck 50 by planetary wheel 54 with " ahead running of afterwards pedaling ".Therefore, the power of pedal axle 20 only reaches chuck 50, and does not reach chain wheel cover 70, and bicycle can not move thus.

Pedal idle running behind " afterwards the pedaling idle running " of adopting the device that is used for changing power direction of the present invention and the ordinary bicycle following difference is arranged.That is, ordinary bicycle owing to after pedal when dallying, drive sprocket and chain and pedal axle be backward rotation together.But in the present invention, drive sprocket and chain do not rotate.

As mentioned above, as the device of the present invention of one of " two-way ahead running device " by adopting some new parts with the mode transferring power different with conventional equipment.In addition, owing to optimized the shape of respectively forming member, can prevent the load concentration on a privileged site.And, make each part integrated, thereby can make assembling procedure simple and easy to do.In addition, the operation of a joystick with simplification apparatus of the present invention is housed, and improves the structure of axle sleeve, it can directly be linked with ordinary bicycle, in the following example of the present invention, will be illustrated this.

To be foundation with the invention described above below, first, second and the 3rd embodiment of the present invention will be described.In first embodiment, the position that is used in forward the single direction ratchet of rotating and is used to control counter-rotational ratchet exchanges mutually.In a second embodiment, replace reverse lever with steel wire.And in the 3rd embodiment, the shape of change axle sleeve so that being used in the device that changes power direction can directly be contained on the ordinary bicycle, and need not be done any change to ordinary bicycle.

＜embodiment 1 〉

With reference to Fig. 6 to 9, the basic characteristics of this embodiment are: change single direction ratchet that is used for rotating forward and the position that is used to control counter-rotational ratchet.That is, the position of the ratchet that will be used for rotating forward moves to its outside from the chuck inboard, and meanwhile, the chuck inboard is shifted to from the outside of chuck in the position that will be used to control counter-rotational ratchet.

For the position of above-mentioned two ratchets of conversion, respectively form member with the shape manufacturing different with the invention described above.But the quantity of part is also similar with the invention described above with the identical of the invention described above and its operation.The shape of the part after improving will be described below.

Shown in Fig. 6 and 7, axle sleeve 130 has a hollow cylindrical boss at its right-hand member, and in its outside a plurality of openings 131 that wherein insert a plurality of the 3rd bluff pieces 132 is arranged.Axle sleeve 130 has ring flat-plate shape sidewall and a hole 133 that is used to install above-mentioned first gear 81 of the present invention, compare with the hole 33 of the invention described above, the more close pedal axle 120 in the position in hole 133, this is because axle sleeve 130 is to obtain by the edge of removing axle sleeve 30.

The commutative ring 140 of this embodiment is with the difference of the commutative ring 40 of the invention described above: form one the 5th gear 141 in its side towards pedal axle 120 outsides.Commutative ring 140 is between the 3rd ratchet 151 of the 3rd bluff piece 132 and chuck 150.

Shown in Fig. 6 and 8, the chuck 150 of present embodiment has a plurality of openings 153 that wherein insert a plurality of four paws spares 152 in the outside of its left part, and in the inboard of its left part one the 3rd ratchet 151 is arranged.In addition, the right part of chuck 150 is identical with the right part of the invention described above chuck 50.In the chuck 150 with said structure, four paws spare 152 is meshed with the 4th ratchet 172 of chain wheel cover 170, and the 3rd ratchet 151 is meshed with the 3rd bluff piece 132 of axle sleeve 130.

The sun gear 160 of present embodiment has one and has the outside of one the 6th gear 161 that only is meshed with a plurality of planetary wheels 154 with the inboard and that pedal axle 120 fixes.

In addition, shown in Fig. 6 and 9, on the right side of Fig. 6, chain wheel cover 170 has one the 7th gear 171 in the inboard at edge, and in its left side one the 4th ratchet 172 is arranged.Therefore, the 7th gear 171 meshes with the planetary wheel 154 of chuck 150, and four paws spare 152 engagements of the 4th ratchet 172 and chuck 150.

Other part is identical with the invention described above.In addition, in Fig. 6 to 9, the vehicle frame of sequence number 110 expression bicycles, sequence number 111 expressions one pedal axle axle sleeve, sequence number 153 expressions one chuck ring, the planetary axle of sequence number 155 expressions, and sequence number 173 expressions one sprocket wheel geometrical clamp.

The operation and the Action Specification of present embodiment with said structure is as follows.

At first, by following mechanism for implementing " the preceding ahead running of pedaling ".When pedal axle 120 clockwise rotated, sun gear 160 rotated along the direction identical with pedal axle 120, and planetary wheel 154 rotates counterclockwise.But chuck 150 itself clockwise rotates with the slewing rate that is different from pedal axle 120, and the 4th ratchet 172 engagements of the four paws spare 152 of chuck 150 and chain wheel cover 170, and chain wheel cover 170 is clockwise rotated.

Secondly, " ahead running of afterwards pedaling " is to make after the 3rd bluff piece 132 deviates from from the hole of commutative ring 140 at commutative ring 140, carries out in the 3rd ratchet 151 engagements of the 3rd bluff piece 132 of axle sleeve 130 and chuck 150.That is, when chuck 150 is fixing, carry out by after pedal the reach of realization.Therefore, planetary wheel 154 has changed the power direction that comes from sun gear 160 when rotating around its axle separately, provide the power that clockwise rotates to chain wheel cover 170 thus.

At last, " afterwards pedaling idle running " is undertaken by following mechanism.Commutative ring 140 stops the 3rd bluff piece 132 to be deviate from from the opening of axle sleeve, thereby chuck 150 rotates along the direction identical with pedal axle 120.Consequently, the power of sun gear 160 can not be reached chain wheel cover 170.

＜the second embodiment 〉

The second embodiment of the present invention relates to the control of commutative ring 40.

The commutative ring 40 of the invention described above is by adopting first gear 81 (seeing Fig. 1 and 2) form and unclamp or block first bluff piece 32 on the sidewall of axle sleeve 30.In order to be controlled at first gear 81 that forms on the axle sleeve 30, should on axle sleeve 30, get out a hole 33, reverse lever 80 can be installed from the outside through this hole.When forward and when rotating backward reverse lever 80, first gear 81 and reverse lever 80 together rotate, and with first gear, 81 ingear commutative rings 40 along the direction rotation identical with reverse lever 80, unclamp thus or block first bluff piece 32.

Above-mentioned reverse lever 80 stretches out the outside of axle sleeve 30, thereby the reverse lever 80 that stretches out influences this device and good the connecting of ordinary bicycle of being used to change power direction.

Therefore, second embodiment improves this shortcoming.At this, adopt a steel wire to replace reverse lever, very easily device and the ordinary bicycle that originally is used to change power direction linked, control commutative ring whereby.

As shown in figure 10, the device that is used to control commutative ring 43 of second embodiment has a kink 44 at an end of the commutative ring 43 with a plurality of holes 45.At this, kink 44 is used for the outside from axle sleeve 30 and 33 connects steel wires 46 through the hole, controls commutative ring 43 thus.That is, when the pulling steel wire, commutative ring 43 blocks first bluff piece 32; When promoting steel wire 46,43 of commutative rings unclamp first bluff piece 32.

＜the three embodiment 〉

The 3rd embodiment relates to axle sleeve 30, wherein the shape of axle sleeve 30 is modified to be suitable for the device that is used to change power direction of the present invention directly is contained on the ordinary bicycle and the shape that need not carry out any transformation to ordinary bicycle.

Figure 11 shows the device that is used to change power direction of the present invention that is installed on the ordinary bicycle.In the 3rd embodiment, the profile of the cylinder-shaped sleeve 30 of hollow has been done improvement.

The axle sleeve 34 of present embodiment has the profile of multistage shape.That is, cylinder-shaped sleeve 34 is made multistage trapezoidal that diameter increases progressively from right to left in proper order.In addition, when the pedal axle sleeve 11 of device that this is used to change power direction and ordinary bicycle links, adopt a connection pipe 15 so that conformability to be provided.Be processed with a right-hand screw thread 35 in the outside of connection pipe 15.Also have, the external diameter of connection pipe 15 is identical with the diameter of pedal axle sleeve 11, and its internal diameter is identical with the external diameter of axle sleeve 34.On the other hand, process an additional nut 36 as described below, form a minus thread 37 in the outside of nut 36, and taper 38 is processed in the left inboard of nut 36.

Therefore, adopt following step that axle sleeve 34 is installed on the ordinary bicycle.At first, utilize right-hand screw thread 35 that connection pipe 15 and pedal axle sleeve 11 are linked, and connection pipe 15 and axle sleeve 34 are linked by splined.Then, be connected in opposite side by means of minus thread 37 by minus thread and be screwed into nut 36, subsequently, finish assembling with packing ring 39.

When the device that is used to change power direction with present embodiment connects with ordinary bicycle, although the reversed load that produces because of the post-tensioning bicycle acts on the device that is used to change power direction of the present invention through drive sprocket, axle sleeve 34 still can connect with pedal axle sleeve 11 very tightly.Promptly, along with the increase that acts on the reverse load on this device that is used to change power direction, because the right-hand screw thread 35 of connection pipe 15 and the minus thread 37 of nut 36 reciprocally connect along opposite direction, by making axle sleeve 34 very tight with connecting of pedal axle sleeve 11 in the nut 36 inboard tapers 38 that form.

In addition, have fin and groove shape by processing in the side of axle sleeve 30 and the contact portion between the pedal axle sleeve 11, axle sleeve 30 and pedal axle sleeve 11 be close-coupled reciprocally.

Therefore, when scrunching the bicycle that this device that is used to change power direction is housed forward and backward, the bicycle ahead running.If necessary, when scrunching the bicycle that this device that is used to change power direction is housed backward idle running can appear.The device that is used to change power direction as one of " two-way foot pedal apparatus " of the present invention is different with common two-way foot pedal apparatus aspect component part and operating mechanism.In addition, according to the installation optimization that is used to change power direction of the present invention the shape of each element, prevented the load concentration on a certain specific part thus.In addition, all element constitute an integral body, have simplified its assembling process thus.The device that is used to change power direction adopts a reverse lever, so that utilize it easily to operate the device that is used to change power direction; But also adopted a device that will be used to change power direction to be installed on the ordinary bicycle and need not transform the subring of usefulness ordinary bicycle.

Claims (16)

1. One kind be used for bicycle change the device of power direction with the form of two-way foot pedal apparatus, described two-way foot pedal apparatus comprises a sun gear that connects with a pedal axle, a plurality of planetary wheels rotatably with its a fixing chuck and drive sprocket that has an inner gear, the described device that is used to change power direction comprises:

   An axle sleeve that is used to support a pedal axle that rotates, be provided with at least one or more than one opening in the inboard at the edge of the right cover of this axle sleeve, and on its sidewall, be provided with a hole, wherein a plurality of first bluff pieces insert above-mentioned opening, the mechanism that is used to control commutative ring inserts above-mentioned hole, and one first ratchet engaged of above-mentioned first bluff piece and chuck;

   Commutative ring between first ratchet of above-mentioned axle sleeve and chuck, be provided with one in its side and control second gear that the mechanism of commutative ring links with above-mentioned being used to towards above-mentioned pedal axle, and on its surface portion, be provided with at least one or more than one hole, be used to allow above-mentioned first bluff piece to stretch out or withdraw;

   A hollow cylindrical chuck, the outside and inboard at its left part are respectively equipped with one first ratchet and one second ratchet, have at least one or more than one hole at the ring of its right part, wherein, right part and left part connect as a whole, so that by means of the rotatably fixing one or more at least planetary wheel of compensating-gear shaft, and, the second above-mentioned ratchet is meshed with second bluff piece of sun gear, the 3rd gear mesh of above-mentioned planetary inside and sun gear, and its outside and the 4th gear mesh in the inboard formation of a chain wheel cover;

   A hollow cylindrical center gear that has step, the less left part of its diameter outside is provided with at least one or more than one opening, the second wherein above-mentioned bluff piece is connected in the above-mentioned opening, central opening in the inboard of its left part can link with above-mentioned pedal axle, and is provided with one the 3rd gear in the outside of the bigger right part of its diameter;

   A chain wheel cover, the inboard right-hand member at its edge is provided with one the 4th gear, and wherein above-mentioned sprocket wheel covers on the above-mentioned pedal axle freely independent rotation and is fixed on the above-mentioned pedal axle by a captive nut.
2. 2. the device that is used to change power direction of bicycle as claimed in claim 1 is characterized in that, is provided with eight first bluff pieces on the above-mentioned opening of above-mentioned axle sleeve.
3. 3. the device that is used to change power direction of bicycle as claimed in claim 1 is characterized in that, the mechanism that above-mentioned commutative ring is controlled in above-mentioned being used to is one first gear.
4. 4. the device that is used to change power direction of bicycle as claimed in claim 3 is characterized in that, by arranged outside one reverse lever at above-mentioned axle sleeve, controls above-mentioned first gear.
5. 5. the device that is used to change power direction of bicycle as claimed in claim 3, it is characterized in that, the above-mentioned mechanism that is used to control the above-mentioned commutative ring of above-mentioned axle sleeve utilizes steel wire control commutative ring, and forms a kink and above-mentioned steel wire is inserted above-mentioned kink in a hole through above-mentioned axle sleeve from the outside at an end of above-mentioned commutative ring.
6. 6. the device that is used to change power direction of bicycle as claimed in claim 1 is characterized in that, the number in the above-mentioned hole of above-mentioned commutative ring is eight.
7. 7. the device that is used to change power direction of bicycle as claimed in claim 1 is characterized in that, the above-mentioned planetary quantity of above-mentioned chuck is eight.
8. 8. the device that is used to change power direction of bicycle as claimed in claim 1 is characterized in that, four second bluff pieces insert the above-mentioned opening of above-mentioned sun gear.
9. 9. as the device that is used to change power direction of claim 2 or 8 described bicycles, it is characterized in that, a spring installation is inserted between above-mentioned opening and the above-mentioned bluff piece.
10. 10. the device that is used to change power direction of bicycle as claimed in claim 9 is characterized in that, above-mentioned spring installation is an annual spring, is used to connect the groove of bluff piece.
11. 11. the device that is used to change power direction of bicycle as claimed in claim 1 is characterized in that, above-mentioned sun gear has a hexagonal central opening.
12. 12. the device that is used to change power direction of bicycle as claimed in claim 1 is characterized in that above-mentioned sun gear has the central opening of a spline shape.
13. 13. the device that is used to change power direction of bicycle as claimed in claim 1, it is characterized in that, there is a screw in the left part outside that above-mentioned sprocket wheel covers on its edge, and be provided with at least one or more than one geometrical clamp in its right part outside, thereby one or more drive sprocket and above-mentioned chain wheel cover with a plurality of steps linked.
14. 14. the device that is used to change power direction of bicycle as claimed in claim 13 is characterized in that, with the center of a bearing fixing at above-mentioned chain wheel cover.
15. 15. device that is used for the two-way foot pedal apparatus change of the conduct power direction of bicycle, this two-way foot pedal apparatus comprises a sun gear that connects with a pedal axle, a chuck and a drive sprocket that has an inner gear that a plurality of planetary wheels rotatably are fixed thereon, the device that above-mentioned being used to changes power direction comprises:

    An axle sleeve that has a ring flat-plate type sidewall, be used to support the pedal axle of rotation, be provided with a hollow cylindrical boss on its right side, in its outside at least one or more than one the 3rd bluff piece arranged, this axle sleeve also has a hole that is used for the mechanism of installation and control commutative ring;

    Commutative ring between the 3rd ratchet of above-mentioned the 3rd bluff piece and chuck, be provided with one in its side and control joining the 5th gear of mechanism of above-mentioned commutative ring with above-mentioned being used to towards the above-mentioned pedal axle outside, and at least one or more than one hole are arranged on its surface portion, wherein, the 3rd above-mentioned bluff piece of control;

    A chuck, at the outside of its left part and inboard at least one or more than one four paws spare and the 3rd above-mentioned ratchet of being respectively equipped with, have at least one or more than one hole at the ring of its right part, wherein make right part and left part connection as a whole, thereby by the rotatably fixing one or more at least planetary wheel of the compensating-gear shaft in above-mentioned ring, and above-mentioned four paws spare is meshed with the 4th ratchet of chain wheel cover, the 3rd above-mentioned ratchet is meshed with the 3rd bluff piece of above-mentioned axle sleeve, and above-mentioned planetary inside is meshed with the 6th gear of sun gear, and one the 7th gear that its inboard outside and at the chain wheel cover forms is meshed;

    A sun gear, its inboard fixes with above-mentioned pedal axle, and there is one the 6th gear in its outside; And

    A chain wheel cover is provided with one the 7th gear in the inboard at its edge, be provided with one the 4th ratchet in its outside, and wherein above-mentioned ratchet casing freely rotates independently on above-mentioned pedal axle and fixed by a captive nut and above-mentioned pedal axle.
16. 16. the device that is used to change power direction as claim 1 or 15 described bicycles, it is characterized in that, sequentially form multistage shape in the left side and utilize the outside to have the connection pipe of right-hand screw thread and outside that minus thread is arranged and left inboard is processed to bevelled nut by the outside that makes above-mentioned axle sleeve, above-mentioned axle sleeve is installed on the pedal axle sleeve of bicycle with mating, the external diameter of above-mentioned connection pipe is identical with the diameter of above-mentioned foot-operated axle sleeve, and the internal diameter of above-mentioned connection pipe is identical with the diameter of above-mentioned axle sleeve.

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