JPH02394Y2 - - Google Patents

Description

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

This invention relates to an operation cable clamp device for a bicycle, and more specifically, it uses a so-called direct attachment pedestal fixed on a frame pipe in order to directly attach a gear shift operation lever to the frame pipe. This invention relates to a frame pipe in which the intermediate portion of an operating cable routed from a gear shift lever attached to a handlebar is supported by a frame pipe.

[Prior art and its problems]

On some sports-type bicycles, the gear shift control lever is directly fixed using a mounting bolt without using a tightening band.
There are some that are equipped with so-called direct attachment levers. For example, on the top surface of the lower pipe on the bicycle frame where such a direct-mount lever is planned to be installed,
A pedestal with threaded holes for receiving mounting bolts is welded in place in advance. When a lever unit consisting of a lever mounted on a lever base is mounted on a frame by screwing a bolt onto the base,
For operating levers that use a handle-type installation method, there is no tightening band that can be seen from the outside by wrapping around the frame pipe, resulting in a clean appearance.Also, since the band does not loosen or shift, the installation condition is improved. becomes stable. Incidentally, recently, the variety of types and uses of bicycles has been promoted, and various parts have been proposed, expanding the range of parts selection for users. For example, in addition to the usual control levers that are attached to frame pipes, there are also control levers that are attached to the handlebar near the grip 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 installed on a bicycle to which a direct-mountable lever as described above is installed or planned to be installed.
The first reason is that the direct-mounting lever on the frame is removed and replaced with a handle-mounted lever, so the direct-mounting pedestal remains exposed on the frame after the direct-mounting 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 pedestal to easily operate the steering wheel-mounted gear shift lever or brake lever. To provide an operating cable clamp device for a bicycle, which can hold an intermediate portion of a cable to a frame.

[Means to achieve the purpose]

In order to achieve the above object, in the bicycle operation cable clamp device according to the present invention, a pedestal housing chamber is formed that accommodates a pedestal with a screw hole fixed on a frame pipe, and the pedestal housing chamber is connected to the screw hole. It has a central fixing part with a bolt through hole penetrating in the axial direction, a pair of left and right arm parts extending on both sides of the central fixing part, and a cable holding means provided at the tip of the arm part. The pedestal is fitted into the pedestal accommodating chamber of the central fixing part, and a bolt passed through a bolt hole is screwed into a screw hole of the pedestal 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 has the following functions and effects. The operating cable clamping device of the present invention can be installed by fitting the direct-mounting pedestal that protrudes onto the frame into the pedestal accommodating portion formed in the central fixing part, so when it is installed, the direct-mounting pedestal does not fit properly. It is hidden and the appearance of the frame does not deteriorate due to the direct attachment pedestal. In addition, this clamp device can be installed by simply screwing the bolt passed through the bolt hole in the central fixing part into the screw hole in the direct mounting pedestal, making the installation process extremely easy. When the pedestal is placed, the pedestal storage chamber covers the pedestal, and the central fixing part or the arms extending left and right from it hug the curved part at the top of the frame pipe, or the curved part from the top to the side, so it will not shift back and forth or left or right. It does not move and is installed in a stable state. In this way, the operation cable clamping device of the present invention can be used, for example, when replacing a direct-mounted lever with a fixed-handle lever. This provides an excellent effect in that the intermediate portion of the operating cable 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
An angular direct mounting pedestal 8 having a screw hole 8a having an axis perpendicular to the pipe 6 is fixed to the front upper surface of the pipe 6 by welding or the like. This direct-mounting pedestal 8 is originally provided for fixing the speed change operation lever indicated by the symbol L in FIG. Fix the cable clamp device 7, which will be explained in detail. As clearly shown in FIG. 3, the cable clamp device 7 has a rectangular hole-shaped pedestal accommodating chamber 9 that can accommodate the angular direct-mounted pedestal 8 at its lower surface, and the pedestal accommodating chamber It has a bolt through hole 10 that communicates with the upper exterior of the bolt 9. A pair of left and right arm parts 12, 1 having a substantially cylindrical central fixing part 11 and extending from the central fixing part 11 to the sides of the frame 6 along the surface of the frame pipe 6 from the left and right.
At the same time, holding means 13, 13 capable of holding the intermediate portion of the operating cable W are formed at the ends of the arm portions 12, 12. In this example, as shown in FIG. 4, the holding means 13, 13 include an outer cable holding hole 14 in the shape of a circular hole with a bottom that can accommodate and hold the end of the outer cable w1;
Coaxially with this, an inner cable insertion hole 15 is provided at the bottom of the holding hole 14, and the inner cable w2 is passed through the inner cable insertion hole 15, and the end of the outer cable w1 is held for the outer cable. It is configured to be housed and held in the hole 14. In this case, if the cylindrical holding means 13 is provided with a slit 16 that is continuous with the inner cable insertion hole 15 as shown in FIG.
By sliding the inner cable w2 laterally and positioning it at the center of the inner cable insertion hole 15, and fitting the outer cable w1 into the outer cable holding hole 14, the end of the long inner cable w2 is inserted through the inner cable. This is advantageous because the intermediate portion of the double cable W can be held by the holding means 13 with a single touch without having to go through the trouble of passing it through the hole 15. To attach the cable clamp device 7 of the present invention to the frame pipe 6, place the central fixing part 11 on the pedestal 8 on the frame pipe 6 so as to fit the pedestal storage chamber 9, and then use the bolt through hole 10 of the central fixing part 11 to It is only necessary to screw the bolt 17 passed through from above into the screw hole 8a of the pedestal 8. As shown in FIG. 3, the cable clamp device 7 of the present invention can cover the direct-mounting base 8 on the frame pipe 6, so that the direct-mounting base is exposed and attached to the frame. I've never had a case where it spoiled my appearance. In addition, when replacing a gear shift operating lever that is directly attached to the frame pipe with an operating lever that is attached to the handlebar, for example, the cables that are routed from the operating lever to each transmission may be replaced. The middle part of the operating cable that should be held in the frame pipe can be visually appealing. Note that the scope of the present invention is of course not limited to the above-mentioned embodiments. For example, in the illustrated example, a square-shaped pedestal is shown as a direct-mounting pedestal, but a round-shafted pedestal may be used. can be similarly applied. Further, in the above embodiment, the cable holding means is composed of an outer cable holding hole and an inner cable insertion hole continuous with the outer cable holding hole, and holds the middle part of the cable while holding the end of the outer cable. However, the holding means may simply be formed into a pipe shape through which the outer cable can be inserted, and may be configured to insert and hold the intermediate portion of the double cable. moreover,
As a cable holding means, the outer cable holding hole 14 in the illustrated example is made into a screw hole shape, and a knurled bolt provided at the end of the outer cable is screwed into the outer cable holding hole 14 to adjust the effective length of the outer cable. Of course, the scope of this invention also includes cases where it is possible to do so. Moreover, the object to be held by the holding means is not limited to the operating 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 equipped with the operating cable clamp device of the present invention and a wiring structure for the operating cable held thereon; FIG. 2 is an exploded perspective view of the operating cable clamp device of the present invention;
3 is an enlarged sectional view taken along the - line in FIG. 2, and FIG. 4 is an enlarged sectional view taken along the - line in FIG. 2. 6... Frame pipe, 7... Clamp device,
8... Pedestal, 8a... Screw hole, 9... Pedestal storage chamber, 10... Bolt through hole, 11... Central fixing part, 12... Arm part, 13... Holding means.

Claims (1)

[Scope of utility model registration request] A pedestal housing chamber for accommodating a pedestal with a screw hole to be fixed on the frame pipe is formed, and a central fixing part is provided with a bolt through hole penetrating from the pedestal housing chamber in the axial direction of the screw hole; It has a pair of left and right arm parts extending on both sides of the fixing part, and a cable holding means provided at the tip of the arm part, and the pedestal is fitted into the pedestal housing chamber of the central fixing part, and has a bolt through hole. An operating cable clamp device for a bicycle, characterized in that a bolt passed through the pedestal is screwed into a screw hole of the pedestal to be fixed to the frame.