JPH1053189A - Interlocking shift change operation device for bicycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform shift change operation from the two positions of a handle. SOLUTION: An interlocking shift change operation device for a bicycle is a device to operate a rear shift change operation device 10 mounted on a handle 1 for a bicycle through a push cable 13 and comprises an interlocking lever case 20 mounted on a handle 1; and an interlocking shift change operation lever 22 to which one end of the push cable 13 is coupled and which is oscillatively supported on the interlocking lever case 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interlocking shift operation device for a bicycle. More specifically, the present invention relates to an interlocking shift operation device for a bicycle in which shift levers are arranged at two grip positions of the same handle and both are linked.

[0002]

2. Description of the Related Art Bicycles have a multi-stage front
It has a chain wheel and a multi-stage sprocket on the rear, which is connected by a chain to transmit rotational torque. An optimal gear ratio is selected by selecting a combination of a chain wheel and a sprocket that spans a chain from a multi-stage front chain wheel and a multi-stage sprocket according to the traveling speed. This shift operation is usually performed by a shift lever of a shift operating device that can be operated from the grip position of the steering wheel.

[0003] On the other hand, in a downhill-type handle, for example, the grip position is different between a case where the vehicle runs at a normal speed and a case where the vehicle runs at a high speed on a slope or the like while preventing wind resistance. However, since the speed change operation device is disposed only at a specific grip position, if the grip position is changed, the gear cannot be shifted from that position. For this reason, in some cases, it is necessary to change the grip position in order to perform a shift operation.

The change of the grip position is time-consuming, and the operability is impaired even in view of the function of disposing the grip at the two positions.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a bicycle interlocking shift operation device capable of shifting gears from two grip positions of a steering wheel. Another object of the present invention is to provide a bicycle interlocking shift operation device capable of performing a quick shift operation.

[0006]

SUMMARY OF THE INVENTION A bicycle interlocking shift operation device according to a first aspect of the present invention is a device for operating a shift operation device mounted on a bicycle handle via an operation cable, and can be mounted on the handle. With an interlocking lever case,
An interlocking shift operation lever is provided, to which one end of the operation cable is connectable, and which is swingably supported by the interlocking lever case.

In this device, by operating the interlocking shift operation lever, the shift operation device can be operated via the operation cable. That is, the interlocking lever case is mounted on the handle at a position different from the speed change operation device, and the interlocking speed change operation lever rotatably supported by the interlocking lever case enables the speed change operation. An interlocking shift operation device for a bicycle according to a second aspect of the present invention is a device for operating a shift operation device mounted on a bicycle handle. It has a supported interlocking shift operation lever and an operation cable having one end connectable to the shift operation device and the other end connected to the interlocking shift operation lever.

In this device, similarly to the above, an interlocking lever case is mounted on the steering wheel at a position different from that of the speed change operation device, and the interlocking speed change operation lever is swingably supported by the interlocking lever case via an operation cable. Thus, the shift operation device can be operated, and the shift operation can be performed from two positions of the steering wheel. An interlocking speed change operation device for a bicycle according to a third aspect of the invention is the device according to the first or second aspect, wherein the operation cable has an outer casing and an internal cable arranged relatively movable inside the outer casing. Further, a cable adjustment unit is provided at the entrance of the operation cable of the interlocking lever case, and adjusts the angular position of the interlocking shift operation lever by relatively moving the outer casing and the internal cable.

[0009] Here, the angular position of the interlocking shift operation lever can be adjusted to a position that is easy to operate. A bicycle interlocking shift operating device according to a fourth aspect of the present invention is the bicycle interlocking shift operating device according to any of the first to third aspects, wherein the operation cable is connected to one end of the interlocking shift operating lever via a ball joint.

In this case, the operation cable and the interlocking shift operation lever can be connected at any angle of the interlocking shift operation lever. A bicycle interlocking speed change device according to a fifth aspect of the present invention is the bicycle gear shift operation device according to any one of the first to fourth aspects,
The other end of the interlocking shift operation lever is bent into an L shape to form an operation unit.

A bicycle interlocking shift operating device according to a sixth aspect of the present invention is the bicycle shift operating device according to any one of the first to fifth aspects, wherein the shift operating device has a shift operation lever that can be rotated, and one end of the operation cable is a ball. It can be connected to a speed change operation lever via a joint. In this case, as described above, the operation cable and the speed change operation lever can be connected at any angle of the speed change operation lever.

[0012]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an oblique projection view of a handle mounted with a bicycle interlocking speed change mechanism according to an embodiment of the present invention. FIG. 2 is a front view showing an attachment for fixing a push-pull cable for interlocking a shift operation lever and an interlocking shift lever to a handle.

A handle 1 shown in FIG. 1 is a handle for a mountain bike. The horizontally arranged stem member 2 is connected to a bicycle head pipe (not shown).
A cross member 4 is fixed to a stem bracket 3 at one end of the stem member 2. The cross member 4 is made of a metal pipe, and both ends are bent forward by about 90 degrees, and these portions constitute side grip portions 5 and 6.

In the cross member 4, cylindrical grip members 7, 8 made of synthetic resin are arranged. Grip member 7,
Numeral 8 is for driving operation by grasping at the time of steering operation during normal running. A front speed change operation device 9 and a rear speed change operation device 10 are arranged at lateral positions of the grip members 7 and 8. The front speed change operation device 9 is for selecting a chain wheel (not shown) for bridging a chain arranged at the front.

The rear shift operation device 10 is for selecting a multi-stage sprocket (not shown) arranged on the rear. Details of the structure and functions of the rear shift operation device 10 will be described later. By rotating the shift operation lever 11 of the rear shift operation device 10, the cable 1
The wire in 2 is pulled, and a rear derailleur (not shown) is driven to change the speed.

One end of a push-pull wire 14 of a push-pull cable 13 is connected to an intermediate portion of the shift operation lever 11 by a ball joint 16. The push-pull wire 14 of the push-pull cable 13 is a known one that can be driven even when pushed or pulled. The ball joint 16 includes a spherical member provided at one end of the wire 14 and a socket provided on the shift operation lever 11 side and surrounding the spherical member, and has a known structure. With this ball joint 16, the push-pull wire 14 and the speed change operation lever 11 can be connected at any angle of the speed change operation lever 11.

An intermediate portion of the outer casing 15 of the push-pull cable 13 is held by an annular cable holding member 17, and the cable holding member 17 is fixed to a lower portion of a plate-shaped fixing member 18. The upper part of the fixing bracket 18 is fixed to one end of the grip member 8 with a nut 19. The other end of the push-pull cable 13 is connected to the interlock lever case 20.

FIG. 5 is an internal sectional view of the interlocking lever case. Push-pull cable 13 of interlocking lever case 20
A cable adjustment unit 21 is provided at the entrance of the device. The cable adjustment unit 21 is for finely adjusting the angular position of the interlocking shift operation lever 22 by relatively moving the outer casing 15 and the push-pull cable 13 therein. The interlocking shift operation lever 22 can swing about the center shaft 23 at the center position of the interlocking lever case 20.

One end of the interlocking shift operation lever 22 is connected to one end of the push-pull cable 13 via the same ball joint 24 as described above. Interlocking shift operation lever 2
At the other end of 2, an operation unit 25 for operating with a finger is provided in an L-shape. As understood from the above description, when the shift operation lever 11 is actuated, this actuation activates the push-pull cable 13 and interlocks the interlocked shift operation lever 22, so that the shift operation is performed by the shift operation lever 11 or the interlocked shift. It can be performed by any of the operation levers 22.

<Rear Transmission Operating Device 10> FIG. 3 is a sectional view showing the inside of the rear transmission operating device. FIG.
FIG. 4 is a partial cross-sectional view of the shift lever when cut along a line IV-IV. The pedestal 30 constitutes a main body, and is fixed to the cross member 4 by a band member 31. Band member 3
One end of 1 is provided on the pedestal 30 so as to be swingable about a shaft 32, and the other end is fixed to the pedestal 30 with a bolt 33.

A screw hole 35 is formed in the pedestal 30, and a fixing bolt 34 is screwed into the screw hole 35.
A bottom cover 36, a washer 37, and a leaf spring 38 are fixed between the pedestal 30 and the fixing bolt 34. The bottom cover 36 is a bottom cover, and the leaf spring 38 is for pressing the positioning ball 39. The leaf spring 38 has a disk shape, and has a ball holding hole 40 formed in the radial direction for positioning and holding the positioning ball 39 (see FIG. 5).

Therefore, the positioning ball 39 is allowed to move only in the radial direction of the ball holding hole 40. A positioning plate 41 is arranged in a direction opposite to the leaf spring 38 with the positioning ball 39 interposed therebetween, and the positioning plate 41 is integrally fixed to an end surface of the rotating cylindrical member 42. Positioning plate 41
Are formed at the outer peripheral position of the device, three positioning holes 46 and a positioning hole 46 different from the positioning holes 46 by 180 degrees are formed. A total of six positioning holes 46 are formed. The three positioning holes 46 are
This corresponds to the low L, middle M, and top T positions of the transmission ratio of the front transmission.

One positioning ball 39 is inserted into three positioning holes 46, that is, a total of two positioning balls 39 are inserted. Positioning hole 4 of positioning plate 41
A friction portion 47 is formed annularly on the inner periphery of 6. A clamp ring 50 is slidably disposed on the cylindrical portion 30a of the pedestal 30. A ball holding hole 51 is formed in the clamp ring 50 in the circumferential direction.
1, the positioning ball 39 is held.

The center position of the ball holding hole 51 is enlarged in the radial direction. For this reason, the positioning ball 39 in the ball holding hole 51 is moved in the radial direction by rotating the clamp ring 50, moves to the friction portion 47 of the positioning plate 41, and is clamped. The rotary cylindrical member 42 is slidably and rotatably disposed on the cylindrical portion 30 a of the pedestal 30.

A coiled torsion spring 43 is disposed between the rotating cylindrical member 42 and the pedestal 30, one end of which is fixed to the rotating cylindrical member 42, and the other end of which is fixed to the pedestal 30. . The torsion spring 43 urges the rotating cylindrical member 42 in a direction opposite to the urging force of a return spring (not shown) of a rear transmission (not shown) to even out the torque required for operating the shift lever operating lever 11. It is to be.

On the outer periphery of the rotating cylindrical member 42, the wire winding drum 4
4 is fixed. A U-shaped concave portion 45 is formed on the outer periphery of the wire winding drum 44, and the concave portion 45 has a different radial distance depending on the angular position as shown in FIG. The speed change operation lever 11 is provided integrally with the wire winding drum 44, and the wire winding drum 44 can be turned by rotating the speed change operation lever 11.

The concave portion 45 of the wire winding drum 44 is for winding the push-pull cable 13. Since the radial distance differs depending on the angle position, when the shift operation lever 11 is operated, the lever ratio is changed depending on the angle position. different. <Operation of Rear Gearbox 10> To operate the rear gearbox, the gearshift lever 11 is operated to rotate the wire winding drum 44. When the wire winding cylinder 44 is turned, the push-pull cable 13 is wound around the concave portion 45, whereby the push-pull cable 13 is pulled to perform a necessary shift. When the wire winding drum 44 is turned, the turning cylindrical member 42 and the positioning plate 41 integrated therewith are also turned at the same time. The positioning ball 39 is allowed to move only in the radial direction by the ball holding hole 40, but cannot move eventually because the movement in the radial direction is restricted by the ball holding hole 51 of the clamp ring 50.

By the rotation, the stopped positioning ball 39 is inserted and positioned in the next positioning hole 46 of the positioning plate 41. That is, if the first position is the low L position, the shift operation lever 11 is moved to the next middle position M.
The winding drum 44, the rotating cylindrical member 42, and the positioning plate 41 are positioned. To perform this positioning steplessly, the following operation is performed.

When the clamp ring 50 is turned, the positioning ball 39 is moved in the radial direction by the ball holding hole 51 and moves to the friction portion 47. The positioning ball 39 fixes the positioning plate 41 by the friction portion 47.
Since the positioning plate 41 cannot rotate, the rotating cylindrical member 42 can be fixed at an arbitrary position. [Other Embodiments] In the above embodiment, the shift operation lever 11 and the interlocking shift operation lever 22 are linked by the push-pull cable 13. This interlocking may be performed by a hard member such as a rod.

In the above embodiment, the shift operation lever 11 and the interlocking shift operation lever 22 are connected to the push-pull cable 13.
Are linked, but this link may be performed by another method. For example, the wire winding cylinder 44 and the interlocking shift operation lever 22
And a structure in which the wire winding drum 44 and a winding drum (without wires) driven by the interlocking shift operation lever 22 are connected by a rod or a push-pull cable.

At this time, the shift operation lever 11 and the interlocking shift operation lever 22 may be of a type that does not return to the original position each time the operation is performed.

[0032]

As described above, according to the present invention, the interlocking shift operation lever different from the shift operation device is mounted on the handle, and the shift operation can be performed from two positions of the handle.

[Brief description of the drawings]

FIG. 1 is an oblique projection view of a handle provided with a bicycle interlocking speed change operation mechanism according to an embodiment of the present invention.

FIG. 2 is a front view showing an attachment for fixing a push-pull cable for interlocking a shift operation lever and an interlocking shift operation lever to a handle.

FIG. 3 is a sectional view showing the inside of a rear shift operation device.

FIG. 4 is a partial cross-sectional view of the speed change lever when cut along a line IV-IV in FIG. 3;

FIG. 5 is an internal sectional view of an interlocking lever case.

FIG. 6 is a plan view of a leaf spring.

FIG. 7 is a plan view of a positioning plate.

FIG. 8 is a plan view of a clamp ring.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Handle 9 ... Front speed change operation device 10 ... Rear speed change operation device 11 ... Speed change operation lever 13 ... Push-pull cable 14 ... Push-pull wire 15 ... Outer casing 16, 24 ... Ball joint 20 ... Interlocking lever case 21 ... Cable adjustment unit 22 ... Interlocking shift operation lever

Claims (6)

[Claims] 1. An interlocking speed change operation device for a bicycle for operating a speed change operation device mounted on a bicycle handle via an operation cable, comprising: an interlock lever case mountable on the handle; An interlocking shift operation device for a bicycle, comprising: an interlocking shift operation lever having one end connectable and swingably supported by the interlocking lever case. 2. An interlocking shift operation device for a bicycle for operating a shift operation device mounted on a bicycle handle, comprising: an interlocking lever case attachable to the handle; An interlocking shift operation device for a bicycle, comprising: a supported interlocking shift operation lever; and an operation cable having one end connectable to the shift operation device and the other end connected to the interlocking shift operation lever. 3. The operating cable has an outer casing and an internal cable disposed relatively movably inside the outer casing, the operating cable being provided at an entrance of the operating cable of the interlock lever case, and The interlocking shift operation device for a bicycle according to claim 1 or 2, further comprising a cable adjustment unit that adjusts an angular position of the interlocking shift operation lever by relatively moving a casing and an internal cable. 4. The interlocking shift operation device for a bicycle according to claim 1, wherein the operation cable is connected to one end of the interlocking shift operation lever via a ball joint. 5. The operation unit according to claim 1, wherein the other end of the interlocking shift operation lever is bent into an L shape to form an operation unit.
The interlocking shift operation device for a bicycle according to any one of the above. 6. The speed change operation device according to claim 1, wherein the speed change operation device has a speed change operation lever that can be rotated, and one end of the operation cable is connectable to the speed change operation lever via a ball joint. The interlocking shift operation device for a bicycle according to any one of the above.