JPH08337193A - Wire operating device for transmission of bicycle - Google Patents

Abstract

PURPOSE: To provide a wire operating device which is excellent in the operability, simple in the structure and inexpensive by providing a wire adjusting member which can be rotated in the forward and reverse direction irrespective of the number of revolution around the fixed position axis, and adjusts the delivery and pull-in of the wire to a transmission by the revolution. CONSTITUTION: When an operation member 3 is oscillated clockwise, a driving pawl 32 is engaged with a rotary pawl 23 and pushingly turn it, and a wire connection pin 13 is located at the position corresponding to the second stage. The operation member 3 is then returned to the neutral position PN by a returning device, and again turned clockwise, and the pin 13 is positioned at the position corresponding to the third stage. The pin 13 can be positioned successively at the position corresponding to the respective stages by repeatedly turning a rotary ratchet 2 clockwise. In the middle of the operation, the operation member 3 is oscillated in the opposite direction, and the rotary ratchet 2 and the wire adjusting member 1 are turned in the opposite direction to return the transmission stage to the original one.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bicycle transmission wire operating device for setting a shift speed of a bicycle transmission.

[0002]

2. Description of the Related Art In a bicycle transmission, the gear position is usually changed by pulling or loosening an operation wire connected to the transmission. A wire operating device for pulling and loosening the operating wire is provided at an appropriate position such as a bicycle handle. This operating device is generally provided with, for example, two operating parts in the shape of a lever, and includes a ratchet mechanism, a wire winding member, etc. inside, and when operating one operating part in one direction, the wire Is retracted, and the retracted wire is allowed to be paid out to the transmission side by operating the other operation portion. The wire is usually paid out by the tension of a spring provided in the transmission.

[0003]

However, in such a conventional wire operating device for a bicycle transmission, the gear position changed by performing the wire winding (pulling-in) operation using one of the operation parts is changed to the original gear position. When changing back, the other operating section must be operated to return, and when changing the original shift stage again, the one operating section must perform wire operation again.

As described above, the conventional wire operating device requires a separate operation portion when changing the speed from a low speed to a high speed or from a high speed to a low speed, so that the operation is cumbersome and the operation is difficult. The sex is bad. Further, in terms of structure, it has a complicated structure with a large number of parts having two operation parts, requires labor for manufacturing, and is expensive accordingly.

Therefore, it is an object of the present invention to provide a wire operating device for a bicycle transmission, which has better operability, a simple structure, and a lower cost than conventional ones.

[0006]

In order to solve the above-mentioned problems, the present invention can connect a transmission operation wire from a bicycle transmission, and can rotate in the same direction or a direction opposite to that around a fixed position axis. It is possible to rotate without any limitation, and a wire adjusting member for adjusting the amount of wire drawn and drawn in from the transmission by rotation, an operating member for rotating the wire adjusting member, and an operation of the operating member. Transmission means for transmitting the wire adjustment member to the rotational movement of the wire adjustment member, and a wire feeding or drawing amount corresponding to a gear stage of the transmission when the wire adjustment member is not driven. Provided is a wire operating device for a bicycle transmission, comprising: a braking means for removably stopping at a predetermined position.

The wire operating device according to the present invention may have various concrete modes, but from the viewpoint of easiness and certainty of operation, for example, the operating member may be in the same direction or in the opposite direction. A wire operating device for a bicycle transmission, which is a rotation operating member rotatable without any limitation on the number of rotations, wherein the transmission means is a gear transmission mechanism including a gear rotating together with the wire adjusting member and a gear rotating together with the rotation operating member. Can be mentioned.

The transmission means need not be limited to the gear transmission mechanism. When the gear transmission mechanism is adopted, the type of gear is not particularly limited, and various types such as spur gear, helical gear, bevel gear, worm gear, pin gear, and combinations thereof can be adopted. When the rotary operation member is used as the operation member, the operation member is not limited thereto, for example, to facilitate operation by a bicycle driver,
It is conceivable that the wire adjusting member is supported by a member attached to the bicycle handle member, and the rotation operating member is formed in a tubular shape and rotatably fitted to the bicycle handle member.

The wire operating device for a bicycle transmission according to the present invention is attached to an appropriate portion of a bicycle, typically a bicycle handle portion, and a transmission operating wire from a bicycle transmission is connected to the wire adjusting member. It is connected in place. The wire adjusting member is arranged at a rotation angle position corresponding to any one of the shift speeds, and is stopped at that position by the braking means.

When changing the gear stage of the transmission, the wire adjusting member can be rotated by manually operating the operation member through the transmission means. That is, the operating member is manually operated, the wire adjusting member is interlocked with the operating member, and is rotated to a rotation angle position corresponding to the next gear on the high speed side or the low speed side. It is stopped by the braking device. Then, the operation wire connected to the wire adjusting member from the bicycle transmission is also extended or retracted as the wire adjusting member rotates, and is maintained at the position corresponding to the next gear shift. Thus, the shift speed is changed by one speed to the high speed side or the low speed side. It is also possible to perform the same operation to change the gears to the high speed side or the low speed side one after another, and then to return the gears to the original position by operating the operation operation member to the opposite side. By thus reciprocally rotating the wire adjusting member, the shift speed can be changed.

However, in the wire operating device of the present invention,
After operating the operating member in any direction to change the wire adjusting member by one step in the corresponding direction, the operating member is operated again in the same direction to correspond the wire adjusting member to the corresponding direction. It is also possible to rotate the wire adjusting member in only one direction, such as changing gears one after another by rotating in one direction.
The wire connecting portion on the wire adjusting member is, for example, the position corresponding to the lowest speed stage → the position corresponding to the medium speed stage of 1 or 2 → the position corresponding to the highest speed stage → the position corresponding to the same opposite middle speed stage of 1 or 2 → It is also possible to change the gear position while circulating the position such as the lowest gear position.

As described above, the wire adjusting member is reciprocated to change the gear, the gear is rotated only in the same direction to change the gear, and the gear is rotated in the same direction several times and then to the opposite side. It is possible to freely change the gears by turning it and the operability is extremely good. In order to solve the above problems, the present invention also provides the following wire operating device for a bicycle transmission. That is, the transmission operating wire from the bicycle transmission can be connected, and it can rotate around the fixed position axis in the same direction and in the opposite direction without any limitation on the number of rotations. A wire adjusting member for adjusting the amount, a group of rotating pawls arranged at a predetermined pitch to rotate together with the wire adjusting member,
The rotary claw of the rotary claw group is provided with a pair of drive claws that can face the rotary claw at two positions, and one of the pair of drive claws is engaged with one of the rotary claws at one of the two positions. The rotating claw group and the wire adjusting member can be rotated in one direction, or the other of the pair of drive claws engages with one of the rotating claws at the other of the two positions, and the rotating claw group and A swingable operation member capable of turning the wire adjusting member in the other direction, and a wire adjusting member for setting a wire feeding or drawing amount corresponding to a gear stage of the transmission when the wire adjusting member is not driven. A wire operating device for a bicycle transmission, comprising: a braking device for removably stopping at a predetermined position.

In this device, each drive claw of the swingable operating member is moved from a neutral position in which the operating member is swingable in one direction and in the opposite direction to change the shift speed. When the rotary claw group and the wire adjusting member are rotated by either direction to change the gear position and then returned to the neutral position, when the rotary claw comes into contact with the rotary claw, the flexure occurs. It may be provided with flexibility that allows it to escape and return the operating member to the neutral position.

Alternatively, the swingable operating member is provided so as to be swingable and capable of reciprocating within a predetermined range in a direction perpendicular to the rotation center line of the rotary claw group. At the same time, it is subjected to a biasing force by spring means in a direction away from the rotation center line, and can be oscillated in one direction or in the opposite direction to change the gear stage from any neutral position. When the drive claw of the operating member is once pushed toward the rotation center line of the rotary claw group against the spring means so as to approach the rotary claw group, When the drive pawl is allowed to engage with the rotary pawl by being swung in either direction, and is returned to the neutral position after the gear is changed, the rotation of the rotary pawl group is performed by the spring means. Offset to move away from the center line The said drive pawl on its way by may be able to return to the neutral position without contacting the rotary pawl is.

Also in the case of this device, in order to facilitate the operation by the bicycle driver, it is considered that the wire adjusting member and the operating member are supported by a member attached to the bicycle handle member. Further, in this wire operating device, the swingable operating member is automatically returned to a neutral position in which the swingable operating member can be swung in one direction or in the opposite direction to change the shift speed. A return device may be provided. As such a restoring device, a leaf spring,
A variety of springs, such as a spiral spring, may be connected to the operating member on the one hand, and to a fixed portion such as the housing of the wire operating device of the present invention on the other hand, either directly or via another member.

According to the wire operating device for a bicycle transmission according to the present invention, the transmission operating wire from the bicycle transmission is connected to the wire adjusting member at a predetermined position, and the wire adjusting member is connected to any one of the gear stages. Arranged at a corresponding rotation angle position and stopped by the braking device, and further arranged at the neutral position where the swingable operation member can be swung in one direction and the opposite direction. To do. When changing the shift speed, in this state, as it is, or after the operating member is once pushed toward the rotation center line of the rotary claw group to bring the drive claw close to the rotary claw, the operating member is moved in one direction or Rock in the opposite direction. When the operating member is swung in one direction, one driving claw on the operating member engages with one rotating claw and is pushed and rotated in one direction to swing the operating member in the opposite direction. When this is done, the other driving claw on the operating member engages with the rotating claw on the opposite side, and pushes this in the other direction to interlock with the rotation of this rotating claw to cause the wire to move. The adjusting member rotates in one direction or the other direction (opposite direction) and is rotated to the rotation angle position corresponding to the next speed stage on the high speed side or the low speed side, and at that position, the braking device stops and the position Maintained at. Then, the operation wire connected to the wire adjusting member from the bicycle transmission is also extended or retracted with the rotation of the wire adjusting member, and is maintained at the position corresponding to the next gear shift.

Thus, the shift stage is changed by one stage to the high speed side or the low speed side. After the first gear shift, the operating member may be returned to the neutral position and the same operation may be performed to further change the gear or to return the gear to the original position. The operating member for moving the driving pawl can be swung in one direction or the other direction as described above. However, in the wire operating device of the present invention, the operating member is swung in any one direction. It is said that the wire adjustment member is moved and turned one step in that direction to make one step change, and then returned to the neutral position and then swung in the same direction again and the wire adjustment member is turned in the same direction to make another step change. As described above, the wire adjusting member can be intermittently turned only in the same direction, whereby the wire connecting portion on the wire adjusting member can be moved, for example, at the lowest speed corresponding position → the one or more middle speed corresponding positions → It is also possible to change the gear position while circulating the highest speed corresponding position → one or two or more similar opposite middle speed corresponding positions → the lowest speed corresponding position. Thus, even if the wire adjusting member is reciprocally moved, even if the wire adjusting member is rotated only in the same direction, the shift speed can be changed, so that operability is good.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing a main part of a wire operating device for a bicycle transmission according to an embodiment of the present invention, in which a housing 5 is indicated by an alternate long and short dash line. FIG. 2 is a sectional view taken along line XX of FIG. However, in order to facilitate understanding, the rotary claw wheel 2 is shown by a chain line, and the driving claws 31 behind the rotary claw wheel 2,
It shows 32 mag. FIG. 3 is a bottom view of the wire operating device shown in FIG. 1 in which the housing 5 is shown by an alternate long and short dash line to show essential parts. FIG. 4 is an explanatory diagram of a shift speed change accompanying the rotation of the wire adjusting member 1.

The wire operating device shown in the figure has a wire adjusting member 1, a rotary ratchet wheel 2 which rotates in conjunction with the wire adjusting member 1, and a pair of drive claws 31, 3 which can be engaged with the rotary nails 21 to 26 of the rotary ratchet wheel 2.
2 includes an operation member 3 including 2; a pair of braking devices 4 and 4 that stop the wire adjusting member 1 so as to be re-driving; and a housing 5 that supports them. The wire adjusting member 1 has a disk shape here, and the central portion thereof is fixed to the shaft rod 11 and is supported by the shaft rod 11. As shown in FIG. 2, the shaft rod 11 is rotatably supported by a bearing 12 on the housing 5 at its upper end.

A wire connecting pin 13 is provided at one position on the peripheral portion of the bottom surface (lower surface) of the disc-shaped wire adjusting member 1, and the end of the transmission operating wire W from a bicycle transmission (not shown) is connected thereto. To be done. The rotary claw wheel 2 is arranged so as to overlap the wire adjusting member 1, and a total of six rotary claws 21, 22, 23, 24, 25 and 26 are radially provided from the peripheral surface. These claws 21 to 26 have a center angle interval of about 6
It is set at 0 °.

The center of the rotary ratchet 2 is also fitted and fixed to the shaft rod 11 to which the wire adjusting member 1 is attached. Therefore, the wire adjusting member 1 and the ratchet wheel 2 (hence, the rotating claws 21 to 26) rotate together. As shown in FIG. 1, the operating member 3 is a lever that extends in parallel with the disc-shaped wire adjusting member 1 and the rotary ratchet 2 and on the side opposite to the side on which the wire W from the transmission is drawn. 33, a drive that extends from the lever 33 toward the shaft rod 11 of the wire adjusting member 1 and that is located above the rotary ratchet 2, and that extends symmetrically from the vicinity of the boundary between the lever 33 and the shaft mounting portion 34. It is composed of claw support arms 35, 35.
Driving pawls 31 and 32 are provided at the ends of the respective.

The shaft mounting portion 34 is parallel to the shaft rod 11 of the wire adjusting member 1 and the rotary ratchet 2, and accordingly the lever 33 is provided.
It is fitted and fixed to the free lower end portion of the shaft rod 36 which is eccentric to the side. The upper end portion of the shaft rod 36 is rotatably supported by a bearing 37 provided in the housing 5. Thus, by swinging the lever 33 in one direction or the opposite direction, the entire operation member 3 is similarly swung, and the supported driving pawls 31, 32 can be turned in one direction or the opposite direction. .

Each drive claw 31, 32 is formed of a leaf spring here. The pair of braking devices 4 and 4 are symmetrically arranged on the diameter line of the disk-shaped wire adjusting member 1, are supported by the housing 5, and face the peripheral surface of the member 1. Each braking device 4 includes a casing 41, a pushing spring (not shown) built in the casing 41, and a ball 42 partially pushed backward by the spring to the outside of the casing.
As shown in FIG. 4, a recess 14 is formed on the peripheral surface of the wire adjusting member 1 so that the ball 42 can be engaged and disengaged at a position corresponding to an intermediate position between adjacent rotating claws on the rotating claw wheel 2. I am doing it. Therefore, the recesses 14 are also provided at the center angle intervals of about 60 °.

Balls 42, 42 of the pair of braking devices 4, 4
Engages with the recesses 14, 14 on the circumference of the wire adjusting member 1 on the member diameter line, so that the wire adjusting member 1 can be re-driving (re-rotatably) stopped at that position. In this way, the wire connecting pin 13 on the wire adjusting member 1 which is positioned and stopped by the braking devices 4 and 4 has the wire connecting pin positions P1, P2, P3, P4,
It is arranged in either P5 or P6. Therefore, the wire W end connected to the pin is also placed at any of these positions.

The pin position P1 is a position corresponding to the lowest shift speed of the bicycle transmission (not shown), and similarly, the position P2.
And P6 are the positions corresponding to the second speed, the positions P3 and P5 are the positions corresponding to the third speed, and the position P4 is the position corresponding to the highest speed. And
Each rotary pawl on the rotary pawl wheel 2 is not limited to that,
In this embodiment, the above-mentioned P1 to P
It is arranged at a position corresponding to and overlapping each position of No. 6.

An automatic return device 38 is attached to the operation member 3 on which the drive claws 31 and 32 are mounted (see FIG. 2). This consists of a winding spring fitted on the shaft rod 36 of the operating member 3, which is connected directly to the housing 5 on the one hand or via the bearing 37 and on the other hand to the operating member 3 It is connected to the shaft mounting portion 34, and when the operating member 3 is swung in one direction or the opposite direction and the hand is released, the operating member 3 is automatically moved to the neutral position PN shown by the solid line in FIGS. 1 and 3. Restore.

In this wire operating device, the wire adjusting member 1 and the rotating ratchet wheel 2 (henceforth, the pawls 21 to 26) are positioned and stopped by the pair of braking devices 4 and 4, and the operating member 3 is neutralized. When in the position PN, one driving claw 31 on the operating member 3 faces one rotating claw (claw 25 in the example of FIG. 1), and the other driving claw 32 is on the opposite side (in the example of FIG. 1). The constituent members are related to each other so as to face the claws 23).

The housing 5 is provided with an opening 51 through which the lever 33 of the operating member 3 can be projected and swung out of the housing, and an opening for pulling in the wire W is provided on the side opposite to the lever 33. 52 is provided. A pair of wire guide wheels 53, 53 is rotatably provided in the opening 52. The housing 5 is further provided with a mounting portion 54 to a bicycle frame (typically a bicycle handle member).

According to the wire operating device described above, the transmission operating wire W from the bicycle transmission is provided in the housing 5.
Is drawn into the housing 5 through the opening 52 and the wire end is connected to the wire connecting pin 13 on the wire adjusting member 1. When the wire adjusting member 1 is not driven, the wire adjusting member 1
Is arranged at a rotation angle position corresponding to any one of the shift speeds and is stopped by the braking devices 4 and 4, and the operating member 3 is located at the neutral position PN. In the example shown in FIGS. 1 and 3, in this state, the wire connecting pin 13 is moved to the lowest speed position P.
1, the drive claw 31 and the drive claw 32 of the operation member 3 face the rotary claw 25 and the rotary claw 23, respectively. In the following, FIG.
The operation will be described with the state of FIG. 3 as a starting point.

When the operating member 3 is manually swung counterclockwise in FIG. 1 (upward in FIG. 1) from the state shown in FIGS. 1 and 3, the driving pawl 31 is located near the top of one rotary pawl 25. When the side surface is engaged and further swung, the drive claw 31 slides along the side surface toward the shaft rod 11 while the drive claw 31 is in contact with the claw 25 and the claw 2 moves.
Push 5 around. At the same time, the balls 42 of each braking device 4 are pushed out from the recesses 14 on the circumferential surface of the wire adjusting member 1. Thus, the rotary ratchet 2 and thus the wire adjusting member 1 are rotated counterclockwise in FIG.
3 moves to the pin position P6 shown in FIG. When the pin 13 reaches the position P6, the braking devices 4 and 4 are activated again to stop the wire adjusting member 1 at that position. Thus, the wire W is pulled in by one gear, and the second gear is obtained. When the user releases the operating member 3 here, the member 3 returns to the initial neutral position PN by the elastic restoring force of the returning device 38.

During this return, the drive claw 31 slightly contacts the claw 24 between the two rotary claws 23 and 25 which the drive claws 31 and 32 faced at first, but the drive claw 31 is made of a leaf spring. Therefore, it is possible to escape from the bending, and thereby the operating member 3 can return to the position PN. When the operating member 3 that has returned to the position PN is swung counterclockwise in FIG. 1 again, the wire connecting pin 13 is moved to the position P5 shown in FIG. 4 in the same manner, and the third shift speed is obtained. . Similarly, the pin 13 can be set to the position P4 to set the highest speed. When the same operation is repeated, the pin 13 returns to the initial lowest speed position P1 via the positions P3 (position corresponding to the third gear) and P2 (position corresponding to the second gear).

When the operating member 3 is swung in the clockwise direction in FIG. 1 (downward in FIG. 1) from the initial state shown in FIGS. 1 and 3, the drive claw 32 engages with the rotary claw 23 to move it. Since the wire connecting pin 13 is pushed and rotated, the wire connecting pin 13 can be positioned at the second stage corresponding position P2 shown in FIG. After that, the operation member 3 is returned to the neutral position PN by the action of the returning device 38, and is rotated clockwise again in FIG.
Located in 3. When the rotary ratchet wheel 2 is repeatedly rotated clockwise in FIG. 1 in this manner, the pin 13 passes through the highest speed gear position P4, the third gear position P5, the second gear position P6, and then the lowest gear position. Return to P1. Even in this operation, while the operating member 3 is returning to the neutral position PN, the drive claw 32 slightly contacts the next rotary claw, but the drive claw 32 is also made of a leaf spring, so that the flexure can escape. The operating member 3 can be returned to the position PN.

In the above example, the case where the rotary claw wheel 2 and the wire adjusting member 1 are repeatedly rotated only in the same direction to change the shift speed is explained, but the operating member 3 is swung in the opposite direction in the middle. As a result, the rotary ratchet wheel 2 and the wire adjusting member 1 can be rotated in the opposite directions to return the gear position to the original position. Next, another embodiment of the present invention will be described with reference to FIG.

The wire operating device for a bicycle transmission shown in FIG. 5 is a modification of the device shown in FIG. In this device, a long hole H extending in a direction perpendicular to the rotation center line of the rotary ratchet 2 is formed in the shaft mounting portion 34 of the operation member 3, and the eccentric shaft 36 is fitted therein. This device has a shaft 36
Is not fixed to the operating member 3, and the operating member 3 can reciprocate in a direction perpendicular to the rotation center line of the rotary ratchet 2 within the range of the elongated hole H and can swing around the shaft 36. Thus, it is supported by a support means (not shown) provided in the housing 5.

A compression coil spring S is fitted in the elongated hole H so that the operating member 3 receives a biasing force in a direction away from the rotary ratchet wheel 2. Further, a guide roller R is rotatably provided at a portion slightly outside the elongated hole H, and is fitted in a guide groove G provided in the housing 5. Although the guide groove G is formed in an arc shape as a whole, the arc shape is narrowed toward the shaft 36 at both ends of the arc rather than a circle having a radius of a straight line connecting the center of the roller R and the center of the shaft 36. It is formed in a state that it is drawn (pulled).
The distance between the inner wall surfaces g1 and g2 facing each other in the groove is slightly wider than the outer diameter of the roller R at the center of the groove, and becomes narrower enough to fit the outer diameter of the roller R toward both ends of the groove. There is.

When no external force acts, including when the operating member 3 is in the neutral position PN, the roller R is in contact with the inner wall surface g1 outside the groove H by the biasing force of the spring S. Further, when the operation member 3 is swung while the roller R is in contact with the inner wall surface g1, the rotary claws (claws 25 and 23 in the illustrated example) to which drive claws 310 and 320 which will be described later are actually facing each other. It is formed so as not to come into contact with, but to pass above them to engage with the one-end claw (26 or 22 in the illustrated example).

Further, in the apparatus of FIG. 5, the pushing member 30 is erected on the free end of the operating member 3, and instead of the driving pawls 31 and 32 in the apparatus of FIG. Rigid drive pawls 310, 32 integral with the arm 35
0 is set. Further, the braking device employs a leaf spring 400 supported by the housing 5 instead of the braking device 4 in the device of FIG. The protrusion 401 provided at the central portion of the leaf spring 400 can be inserted into and removed from the braking recess 14 (see FIG. 4) provided on the outer peripheral surface of the wire adjusting member 1.

The device shown in FIG. 5 has the same structure as the device shown in FIG. 1 except for the points described above, and the same parts as those in the device of FIG. 1 are designated by the same reference numerals.
According to the wire operating device for a bicycle transmission of FIG. 5, the operating member 3 can be swung in one direction or in the opposite direction to change the shift speed from the neutral position PN to either direction. When the swing operation is to be performed, the drive claw 310,
The spring 320 is pushed in the direction α in FIG. 5 against the spring S so that it once approaches the rotating claws (in the example of FIG. 5, the claws 25 and 23). This pushing operation can be easily performed by putting a finger on the pushing member 30 provided upright on the operating member.
After this pushing operation, the operating member 3 is continuously swung in either direction, whereby the drive pawl 310 (or 32) is moved.
0) engages a rotary pawl (claw 25 or 23 in the illustrated example), which causes the rotary pawl wheel 2 and thus the wire adjusting member 1
Is rotationally driven, and when it is rotated by a predetermined angle, it is stopped at that position by the braking device 400, and the shift speed is changed.

After changing the shift speed, when the operating member 3 is released, the operating member is biased by the spring S in the direction away from the rotary ratchet 2, and the roller R is located outside the groove H. Neutral position PN while rolling along the wall surface g1
Return to. During this return, the operating member 3, and hence the driving claws 310 and 320, are biased as described above, so that the next rotating claw (in the example of FIG.
With the rotation of the claw 25, it is possible to return to the neutral position PN without contacting the claw 24) that has arrived at the position where the claw 25 is present or the position where the claw 23 is present. Other than the above, the wire operating device operates similarly to that shown in FIG.

Since the movement of the swinging member 3 in the direction perpendicular to the rotation center line of the ratchet wheel 2 is restricted within the range of the elongated hole H,
The roller R and the groove G into which the roller R is fitted are not necessarily required. The spring S is the return spring 38 shown in FIG.
A part of the returning device that returns the operating member 3 to the neutral position is formed together therewith, but when the member 3 can be returned to the neutral position only by the spring S, the spring 38 may be omitted.

In the apparatus shown in FIG. 1 and the apparatus shown in FIG. 5, the rotary claw group need not be provided in the form of the rotary claw wheel 2, but may be integrally provided with the wire adjusting member 1. Further, the rotary ratchet wheel 2 does not have to be provided coaxially with the wire adjusting member 1, and may be interlocked with the wire adjusting member 1 via another interlocking mechanism. Furthermore, in the device of FIG.
32 does not have to be a leaf spring if it does not hinder the operation. Also, the drive claws 31, 32 (or 310, 320)
The ratchet mechanism and the rotary claw groups 21 to 26 may be a conventionally known ratchet mechanism. Further, the number of rotating pawls may be larger or smaller than that of the above-described embodiment depending on the number of gear stages in the bicycle transmission.

Next, still another embodiment of the present invention will be described with reference to FIG. The bicycle transmission wire operating device shown in FIG. 6 includes a disk-shaped wire adjusting member 1A and a rotary operating member 3A. The wire adjusting member 1A has a shaft 6
It is supported by 1A so that it can rotate without limitation in any direction. The shaft 61A is erected on a member 6A fitted and fixed to the pipe member 7 which constitutes the bicycle handlebar. The wire adjusting member 1A is provided with a wire connecting pin 13A at one position on the upper peripheral edge thereof, and an operation wire W from a bicycle transmission (not shown) is connected thereto.

The rotation operating member 3A is formed in a cylindrical shape and is fitted on the pipe member 7 so as to be able to rotate without limitation in any direction. An outer peripheral portion of the wire adjusting member 1A is formed on a gear 2A, and a ring gear 2a meshing with the gear 2A is provided on an end portion of the operating member 3A. A handle grip 70 is fitted to an outer portion of the pipe member 7 of the operation member 3A.
It can rotate at a fixed position sandwiched between A and the grip 70.

Further, the wire adjusting member 1A and the supporting member 6
A, the gear 2A and the gear 2a are surrounded by the housing 5A,
The housing 5A has a lower portion divided into two parts, which is fitted onto the pipe member 7 and is fixed to the pipe member 7 by tightening the divided parts with a bolt nut 51a. Further, the housing 5A is formed with a window portion (not shown) into which the wire W is drawn.

As the wire adjusting member 1A rotates, the wire connecting pin 13A is moved to the positions P1 (position corresponding to the lowest speed), P2 (position corresponding to the second speed), similar to the wire connecting pin 13 in the wire operating device of FIG. The wire W can be arranged at P3 (third stage corresponding position), P4 (highest stage corresponding position), P5 (third stage corresponding position) or P6 (second stage corresponding position), and thus connected to the pin. The ends can also take any of these positions.

A braking device 4A is also provided which, when the pin 13A is located in these positions, re-driveably stops the wire adjusting member 1A. As shown in FIGS. 6 and 7, the braking device 4A is provided for the rotation operating member 3A that is interlocked with the wire adjusting member 1A. That is, the end portion of the rotation operation member 3A is rotatably fitted on the ring member 41A fitted and fixed to the pipe member 7, and the member 3
The inner peripheral surface 3a of the A end is formed with recesses 42A at six locations corresponding to the positions P1 to P6. Of these, a pair of recesses located on the diameter line of the operating member 3A has a pair of plates. The spring 43A can be inserted and removed. Each leaf spring 4
3A is partially embedded in and supported by the ring member 41A.

According to the wire operating device for a bicycle transmission shown in FIGS. 6 and 7, the bicycle rider slides the hand holding the handle grip 70 to the rotating operation member 3A and moves the operation member to any one of them. The wire adjusting member 1A can be rotated through the gear 2a and the gear 2A by rotating only in the direction or by appropriately reciprocatingly rotating the wire connecting pin 13A to a predetermined position among P1 to P6. Every time, and there, by engaging the pair of leaf springs 43A in the braking device 4A with the recesses 42A of the rotation operation member 3A, a desired gear position can be obtained.

Further, this device can be provided with an indicator 8A indicating the current gear stage. The indicator 8A is formed in a disc shape as shown in FIG. 6, and
A gear portion 81A is formed on the outer periphery of the gear portion 81A so as to be rotatably supported on the outer surface of the housing 5A.
It can be provided by engaging 1A with the ring gear 2a on the rotary operation member 3A.

In the apparatus shown in FIG. 6 described above, the gear 2
A is formed on the outer peripheral portion of the wire adjusting member 1A,
As shown in FIG. 8 (A), a gear 20A formed separately from the wire adjusting member 1A is fitted onto a shaft 61A of the member 1A and fixed concentrically on the member 1A so that it can rotate together with the member 1A. On the other hand, a ring gear 20a that meshes with the gear 20A is provided at the end of the rotary operation member 3A so that the rotation of the operation member 3A can be transmitted to the wire adjusting member 1A and rotated. Good.

Further, at this time, as shown in FIG. 8, for example, a supporting arm Am may be provided so as to project from a shaft 61A supporting the wire adjusting member 1A, and a braking device 40A may be provided thereto. An example of the braking device 40A in this case is shown in FIG. That is, the cylinder 4 supported by the support arm Am
Put ball 402A in 01A, and ball 402A
Can protrude from one end of the cylinder by a certain amount, and the ball 402A is loaded into the cylinder.
The spring 403A is urged in a push-out direction with a screw 404A screwed to the other end of the cylinder so that the spring force can be adjusted, and the ball 402A is formed in a recess formed on the lower surface of the gear 20A at a position corresponding to each shift speed. 405A can be engaged and disengaged.

Next, still another embodiment of the present invention will be described with reference to FIG. The wire operating device for a bicycle transmission shown in FIG. 9 includes a disk-shaped wire adjusting member 1B and a rotary operating member 3B. The wire adjusting member 1B has a shaft 6
It is supported by 1B so that it can rotate in any direction without limitation. The shaft 61B is erected on a member 6B fitted and fixed to the pipe member 7 forming the bicycle handle. A wire connecting pin 13B is provided at one location on the upper edge of the wire adjusting member 1B, and an operating wire W from a bicycle transmission (not shown) is connected to the wire connecting pin 13B.

The rotating operation member 3B is formed in a cylindrical shape, and is fitted on the pipe member 7 so as to be able to rotate without limitation in any direction. A ring-shaped bevel gear 2B is concentrically provided on the wire adjusting member 1B, and an operating member 3B is provided.
A ring-shaped bevel gear 2 that meshes with the gear 2B at the end of the
b is provided. A handle grip 70 is fitted to an outer portion of the operation member 3B of the pipe member 7, and the operation member 3B can rotate at a fixed position sandwiched between the gear 2B and the grip 70.

Further, the wire adjusting member 1B and the supporting member 6
B, the gear 2B, the gear 2b, and the like are surrounded by a housing 5B. The housing 5B has a lower portion divided into two parts, which is fitted onto the pipe member 7 and the divided portion is tightened with a bolt nut 51b. It is fixed to. Further, the housing 5B is formed with a window portion 5b into which the wire W is drawn.

Rotation of the wire adjusting member 1B causes the wire connecting pin 13B to move to the positions P1 (position corresponding to the lowest speed), P2 (position corresponding to the second speed), similar to the wire connecting pin 13 in the wire operating device of FIG. The wire W can be arranged at P3 (third stage corresponding position), P4 (highest stage corresponding position), P5 (third stage corresponding position) or P6 (second stage corresponding position), and thus connected to the pin. The ends can also take any of these positions.

A braking device (not shown) is also provided to removably stop the wire adjusting member 1B when the pin 13B is placed in these positions. This braking device
It has the same structure as the braking device shown in FIG. 7. According to the wire operating device for a bicycle transmission shown in FIG. 8, the bicycle rider slides and moves the hand holding the handle grip 70 to the rotation operating member 3B and turns the operating member only in any arbitrary direction. Alternatively, by appropriately reciprocally rotating the wire adjusting member 1B through the gear 2b and the gear 2B, the wire connecting pin 13 can be rotated.
By setting B at a predetermined position among P1 to P6 and stopping the wire adjusting member 1B by the braking device thereat, a desired gear can be obtained.

Further, this device can also be provided with an indicator 8B indicating the current shift speed. The indicator 8B is formed in a disc shape as shown in FIG. 9, and
A gear portion 81B is formed on the outer circumference of the gear portion 81B.
B can be provided by meshing with the gear 1b on the outer peripheral portion of the wire adjusting member 1B via the intermediate gear 81b supported by the housing 5B, and by rotatably supporting the indicator body on the outer surface of the housing 5B. In addition,
Instead of the gears 81B, 81b, 1b, a rotating member that is interlocked by a frictional force may be adopted.

As described above, in any of the wire operating devices according to the present invention, the gear position can be changed by rotating the wire adjusting members 1, 1A, 1B only in the same direction or reciprocally rotating them. Good property. In addition, the number of parts is small, the structure is simplified accordingly, and it can be provided at low cost.

The present invention is not limited to the above embodiment, but can be carried out in various modes. The wire adjustment member need not be disc-shaped. Various shapes such as a polygon can be adopted by adopting an appropriate mode for the braking device. It may be of an elliptical shape or a shape in which arm-shaped members are radially combined at an appropriate angle. Further, the braking device is not limited to that of the above-described embodiment, and for example, the wire adjusting member is provided with a friction braking member that comes into contact with the wire adjusting member under a pressing force, or the wire adjusting member is provided with a braking spring member that makes frictional contact. You can also think of things such as tatami. Further, in any of the above-mentioned devices, the gear link corresponding positions P1 to P6 of the wire connecting pins 13, 13A, 13B are also provided.
It is not necessary to set the central angle interval to approximately 60 degrees, and the interval between adjacent elements may be appropriately set so that the wire can be pulled in or unwound so as to achieve a desired gear. The same applies to the distance between adjacent claws in the claw wheel 2 in the apparatus of FIG. Further, the number of gear position corresponding positions at which the wire connecting pin should be stopped is not limited to six, and may be determined according to the gear number of the bicycle transmission.

[0059]

According to the present invention, it is possible to provide a wire operating device for a bicycle transmission, which has better operability, has a simple structure, and is less expensive than conventional ones.

[Brief description of drawings]

FIG. 1 is a plan view showing a main part of a wire operating device according to an embodiment of the present invention, in which a housing is indicated by a chain line.

FIG. 2 is a cross-sectional view taken along the line XX of FIG. 1, showing the rotary ratchet wheel in chain lines and showing the operating member behind it.

FIG. 3 is a bottom view of the wire operating device shown in FIG. 1, showing a housing by a dashed-dotted line and showing a main part.

FIG. 4 is an explanatory diagram of a shift speed change associated with rotation of a wire adjusting member.

FIG. 5 is a schematic plan view of another embodiment of the present invention.

FIG. 6 is a schematic perspective view of still another embodiment of the present invention.

7 is a diagram showing a braking device in the wire operating device of FIG.

FIG. 8 (A) is a schematic side view of still another embodiment of the present invention, and FIG. 8 (B) is a sectional view showing another example of the braking device.

FIG. 9 is a schematic side view of still another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wire adjustment member 11 Shaft rod 12 of member 1 Bearing 13 Wire connection pin 2 Rotating claw wheel 21, 22, 23, 24, 25, 26 Rotating claw 3 Operating member 31, 32 Driving claw 33 Lever 34 Shaft mounting part 35 Driving claw Support arm 36 Shaft rod of member 3 37 Bearing 38 Return device (spring) PN Member 3 neutral position 4 Braking device 5 Housing 51, 52 Opening W wire P1 Lowest speed position P2, P6 Second speed position P3, P5 Third gear shift position P4 Highest speed shift position H Long hole S Spring R Guide roller G Roller guide groove g1 Inner wall surface outside groove G g2 Inner wall surface inside groove G 310, 320 Drive claw 400 Leaf spring (braking device) 401 Leaf spring protrusion 1A, 1B Wire adjusting member 13A, 13B Wire connecting pin 2A, 2a, 20A, 2 a 2B, 2b Gears 3A, 3B Rotation operation member 3a End inner peripheral surface of operation member 3A 4A, 40A Braking device 41A Ring member 42A Recess 43A Leaf spring Am Support arm 401A Cylinder 402A Ball 403A Spring 404A Screw 405A Gear 20A Lower surface Recesses 5A, 5B Housings 6A, 6B Fixing members 61A, 61B Wire adjusting members Rotating shafts 7 Pipe members constituting a bicycle handle 70 Handle grips 8A, 8B Indicators 81A, 81B Indicator gear parts 81b Intermediate gears 1b Wire adjusting members 1B Outer gear

Claims (8)

[Claims] Claim: What is claimed is: 1. A transmission operating wire from a bicycle transmission can be connected, and the wire can be rotated about the fixed axis in the same direction or in the opposite direction without any rotation speed limitation. A wire adjusting member for adjusting the amount of extension and retraction, an operating member for rotating the wire adjusting member, and a rotational movement of the wire adjusting member by transmitting the operation of the operating member to the wire adjusting member. And a braking means for re-driving the wire adjusting member to a predetermined position for setting the wire feeding or drawing amount corresponding to the gear stage of the transmission when the wire adjusting member is not driven. A wire operating device for a bicycle transmission, which is characterized in that 2. The operating member is a rotating operating member that can rotate in the same direction and in the opposite direction without any restriction on the number of rotations, and the transmission means includes a gear that rotates together with the wire adjusting member, and the rotating operation. The wire operating device for a bicycle transmission according to claim 1, which is a gear transmission mechanism including a gear that rotates together with the member. 3. The wire adjusting member is supported by a member attached to a bicycle handle member, and the rotation operating member is formed in a tubular shape and is rotatably fitted to the bicycle handle member. A wire operation device for a bicycle transmission as described. 4. A transmission operating wire from a bicycle transmission can be connected, and can be rotated around the fixed position axis in the same direction or in the opposite direction without any rotation speed limitation. A wire adjusting member for adjusting the amount of extension and retraction, a group of rotary claws arranged at a predetermined pitch that rotates together with the wire adjusting member, and a pair of drive claws that can face the rotary claws in the group of rotary claws at two positions. One of the pair of drive pawls can engage with one of the rotary pawls at one of the two positions to rotate the rotary pawl group and the wire adjusting member in one direction, or A swingable operation member capable of rotating the rotating claw group and the wire adjusting member in the other direction by engaging the other of the pair of driving claws with one of the rotating claws at the other of the two positions. , The A bicycle equipped with a braking device for re-drivingly stopping the ear adjusting member to a predetermined position for setting the wire feeding or drawing amount corresponding to the gear stage of the transmission when the ear adjusting member is not driven. Transmission wire operation device. 5. Each of the drive claws of the swingable operating member is located at a neutral position in which the operating member is swingable in one direction or in the opposite direction to change the speed. When the rotary claw group and the wire adjusting member are rotated to change the gear position and then returned to the neutral position, if the rotary claw comes in contact with the rotary claw in the direction of The wire operating device for a bicycle transmission according to claim 4, wherein the wire operating device has flexibility to allow the operation member to return to a neutral position. 6. The swingable operating member is swingable,
Further, it is provided so as to be reciprocally movable within a predetermined range in a direction perpendicular to the rotation center line of the rotary claw group, and receives a biasing force by spring means in a direction away from the rotation center line. When the swing operation is to be performed in either direction from the neutral position in which it can be swung in one direction or the opposite direction for the purpose of change, the drive claw of the operating member once moves to the rotary claw group. The drive pawl is allowed to engage with the rotary pawl by being pushed toward the center line of rotation of the rotary pawl group against the spring means so as to approach and then swung in either direction. When the gear is returned to the neutral position after the gear is changed, the drive means comes into contact with the rotary pawl in the middle by being biased away from the rotation center line of the rotary pawl group by the spring means. Don't do the news Bicycle transmission wire operating device according to claim 4, wherein the can return to the position. 7. A return device is provided for automatically returning the swingable operating member to a neutral position in which the swingable operating member can be swung in one direction or in the opposite direction to change the shift speed. The wire operating device for a bicycle transmission according to claim 4, 5, or 6. 8. The wire operating device for a bicycle transmission according to claim 4, 5, 6 or 7, wherein the wire adjusting member and the operating member are supported by a member attached to a bicycle handle member.