JPH02395Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to a clamp device for an operating cable on a bicycle, and more specifically, it utilizes a so-called direct-mount lever shaft fixed on a frame pipe in order to directly attach a gear shift operating lever to the side of a frame pipe. This invention relates to a brake operating cable or an operating cable that is routed from a speed change lever attached to a handlebar, and the intermediate portion thereof is supported on a frame pipe.

[Prior art and its problems]

On some sports-type bicycles, the lever shaft to support the gear shift control lever is not attached to the bicycle frame using a mounting band.
Some levers are directly fixed to the frame by welding or the like, and an operating lever is attached to the frame, so-called a direct-mount lever. Generally, a lever shaft having an axial screw hole for receiving an assembly bolt is welded and fixed to the side surface of the lower pipe of the bicycle frame to which such a direct-mount lever is to be installed. The lever body or lever parts such as the friction member are sequentially fitted onto this direct-mountable lever shaft, and finally, the assembly bolt is screwed into the screw hole, so that the speed change operation lever is directly mounted on the frame. When this mounting method is adopted, there is no mounting band that can be seen from the outside as the frame pipe is wrapped around the control lever that uses a band mounting method, resulting in a sleek appearance and the possibility of loosening or misalignment of the band. Since there are no bumps, the installation condition is stable and the operation feeling is improved. Incidentally, recently, the variety of types and uses of bicycles has been promoted, and various parts have been proposed, expanding the range of choices. For example, in addition to the usual operating levers that are attached to frame pipes, there are also operating levers that are attached near the grip on the handlebar so that gear changes can be performed without taking one's hands off the handlebar. However, such a handlebar-mounted gearshift lever has rarely been attached to a bicycle frame to which a direct-mounted lever is attached or planned to be attached as described above. The first reason is that the direct-mounted lever on the frame is removed and replaced with a handle-mounted lever, so the direct-mounted lever shaft remains exposed on the side of the frame after the direct-mounted lever is removed. This worsens the appearance of the bicycle, and the second reason is that when the gear shift control lever is attached to the handlebar, the control cable is attached to the rear end plate of the frame, which is attached to the rear gearbox, or to the bottom of the seat pipe. The cable must be routed a relatively long distance to the front transmission, and the middle part of the operating cable must be held in the frame, making it difficult to hold the middle part of the operating cable.

[Purpose of invention]

This invention was devised under the above circumstances, and its purpose was to use a direct-mounted lever shaft for direct-mounted operation levers to easily convert handle-mounted gear shift levers or To provide a clamp device for an operating cable for a bicycle, which can hold the intermediate part of the operating cable routed from a brake lever on a frame.

[Means to achieve the purpose]

In order to achieve the above object, the bicycle operation cable clamping device according to the present invention has the following features:
A fixing part is formed with a lever shaft accommodation hole for accommodating a lever shaft with a threaded hole fixed to the side of the frame pipe, and a bolt through hole connected to the lever shaft accommodation hole is formed, and a fixing part adjacent to this fixing part is a cable holding means provided therein, the lever shaft is fitted into the lever shaft receiving hole of the fixing part, and
The bolt passed through the bolt hole is screwed into the screw hole of the lever shaft to be fixed to the frame.

[Functions and effects of the idea]

As a result of the above measures, the bicycle operation cable clamping device according to the present invention exhibits the following functions and effects. The operating cable clamping device of the present invention can be installed while the lever shaft for direct mounting that protrudes from the side of the frame is accommodated and fitted into the lever shaft receiving hole formed in the fixing part. is well hidden, and the direct-mount lever shaft does not deteriorate the appearance of the frame. In addition, this clamp device can be installed by simply screwing the bolt passed through the bolt hole in the fixing part into the threaded hole in the lever shaft for direct mounting, making the installation process extremely easy. When the lever shaft is installed, the lever shaft housing hole fits over the lever shaft, so it does not shift forward, backward, left or right, and the mounting state is stable. The clamping device attached to the frame in this way conveniently holds the middle part of the operating cable routed from the handlebar-mounted gearshift operating lever to the rear or front transmission, preventing the cable from dangling. It disappears. In this way, the operating cable clamping device of the present invention can be used, for example, when replacing a direct-mounted lever with a fixed-handle lever, while effectively covering the direct-mounted lever shaft for attaching the lever and allowing it to be mounted from a fixed-handle lever. This provides an excellent effect in that the intermediate portion of the operating cable being routed can be conveniently supported by the frame pipe.

[Explanation of Examples]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 shows a bicycle equipped with an operating cable clamping device of the present invention and a state in which the operating cable is routed using this clamping device. The operation cables W, which extend in a double cable state with an inner cable w2 passed through an outer cable w1 from the speed change operation levers 3 and 4 attached to the left and right near the handle grip 2 of the handlebar 1, are connected to the lower pipes of the frame 5, respectively. The end of the outer cable w1 is clamped by the cable clamp device 7 fixed on the cable clamp device 7, and the inner cable w2 extending therefrom is connected to a rear transmission and a front transmission (not shown), respectively. It is routed to the vicinity. As shown in FIG. 2, the lower pipe 6 of the frame 5
A lever shaft 10 for direct attachment, which has an angular pedestal part 8 and a shaft part 9 extending from this in a direction perpendicular to the pipe 6, is welded to the back side of the pedestal part 8 on both front side surfaces of the pedestal part 8. Fixed by This lever shaft 10 is provided with an axial screw hole 11. The lever shaft 10 for direct mounting is originally equipped with a detent washer 12 and an inner friction member 1, as shown in FIG.
3. Sequentially fit the washer 14, the disc-shaped base of the gear shift operating lever body 15, the washer 16, the outer friction member 17, and the disc spring 18, and finally screw the bolt 19 into the threaded hole 11 of the lever shaft 10. By doing so, the gear shift operating lever 15 is rotatably mounted to support the frame directly. However, in the present invention, this lever shaft 10 for directly mounting the gear shift operating lever is used. Then, the cable clamp device 7, which will be explained in detail next, is fixed. As clearly shown in FIG. 4, the cable clamp device 7 has a base end surface that is a cylindrical surface along the frame pipe 6, and has a lever shaft accommodation hole 20 that accommodates the lever shaft 10. A substantially cylindrical fixing part 21 inside and this fixing part 2
1 and adjacent cable holding means 22.
The lever shaft housing hole 20 has a square hole portion 20a and a shaft hole portion 20b corresponding to the shape of the lever shaft 10, that is, a square base portion and a shaft portion.
When the lever shaft 10 is fitted, the lever shaft 10 does not rotate relative to the lever shaft 10. The end of the lever shaft housing hole 20 is open to the outer end surface of the fixing part 21, and a bolt through hole 2 for the mounting bolt 19 is opened.
3 is formed. In this example, as the cable holding means 22,
As clearly shown in the drawings from FIG. 3 onwards, the cylindrical shape extends directly below and adjacent to the fixing part 21 in parallel with the frame pipe 6, and has an outer cable holding hole 24 that can fit and accommodate the outer cable W1. The inner cable w2 is integrally formed in the central part of the outer cable holding hole 24.
Inner cable insertion hole 26 large enough to pass through
It is constructed by providing a partition wall 27 with an open space. In this way, the outer cable w1 holding portions are formed on both sides of the partition wall 27 in the inner hole 24, and the single cable clamp device 7 can be commonly used as a device attached to both sides of the frame pipe 6. In order to attach the cable clamp device 7 of the present invention to the frame pipe 6, the lever shaft housing hole 20 should be placed over the lever shaft 10 for direct mounting on the frame pipe 6, and the bolt through hole 2 of the fixing part 11 should be covered.
It is only necessary to screw the bolt 19 passed through 3 into the threaded hole 11 of the lever shaft 10. As shown in FIG. 4, the cable clamp device 7 of the present invention has a frame pipe 6.
Since the upper lever shaft 10 for direct mounting can be covered and hidden, there is no possibility that the lever shaft for direct mounting will be exposed and spoil the appearance of the frame 5. Also,
For example, when replacing a frame pipe-mounted gear shift control lever with a handlebar-fixed control lever, the middle part of the control cable that should be routed from the control lever to each transmission is held in the frame pipe in an attractive manner. can do. The scope of the present invention is of course not limited to the embodiments described above. For example, in the embodiments described above, the cable holding means 22 includes an outer cable holding hole 24 and an inner cable insertion hole 26 continuous thereto. The holding means 22 is configured to hold the middle part of the cable W while holding the end of the outer cable w1, but the holding means 22 is formed in a simple pipe shape into which the outer cable can be inserted, In addition to being configured to insert and hold a double cable-like cable, various configurations commonly used for fastening the ends of outer cables can be adopted. For example, an axial slit connected to the outer cable holding hole and the inner cable insertion hole is provided on the outer surface of the cable holding means in the embodiment, and the inner cable is slid through the slit in a direction perpendicular to the axis and positioned at the center of the holding means. In addition, the area corresponding to the outer cable holding hole or inner cable insertion hole is made into a screw hole, and a knurled bolt provided at the end of the outer cable is screwed into this hole, thereby increasing the effectiveness of the outer cable. The length can also be adjusted. Furthermore, the holding means 22
The object to be held is not limited to the operation cable that connects the speed change operation lever and the transmission, but may also be the cable that connects the brake lever and the brake device.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of a bicycle to which the operating cable clamp device of the present invention is attached and the routing structure of the operating cable held therein; FIG. 2 is an exploded perspective view of the operating cable clamp device of the present invention; 3 is a partially sectional front view of the clamp device, FIG. 4 is a partially sectional side view of the clamp device, and FIG. 5 is a back view of the clamp device. 5...Frame, 6...Pipe, 7...Cable clamp device, 10...Lever shaft, 11...Screw hole, 19...Bolt, 20...Lever shaft accommodation hole, 21...Fixing part, 22... ...Cable holding means, 23...Bolt through hole.

Claims (1)

[Scope of utility model registration request] A lever shaft housing hole is formed to accommodate a lever shaft with a threaded hole that is fixed to the side of the frame pipe.
and a fixing part having a bolt through hole connected to the lever shaft accommodating hole, and a cable holding means provided adjacent to the fixing part, and the lever shaft pedestal is inserted into the lever shaft accommodating hole of the fixing part. mated,
An operating cable clamp device for a bicycle, characterized in that the bolt passed through the bolt through hole is screwed into the threaded hole of the lever shaft to be fixed to the frame.