JPS6123686Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a throttle cable for an internal combustion engine.

[Prior art] A conventional throttle cable has a structure as shown in Fig. 1, and has an outer cable 5.
, an inner cable 1 which is movably inserted into the outer cable 5 in the axial direction, and an inner cable 1.
a carburetor connector 11 attached to the tip of the outer cable 5, an adjuster 4 fixed to the carburetor side end of the outer cable 5, a stopper 6 fitted between the carburetor connector 11' of the inner cable 1 and the adjuster 4. The adjuster 4 was equipped with a rubber cap 2. This rubber cap 2
and inner cable 1.
A gap 3 is provided to facilitate smooth movement in the vertical direction. Therefore, when the engine compartment is washed with water or steam, or if water naturally adheres to the engine compartment, water will flow directly from the gap 3 or from the inner cable 1. water that enters the adjuster 4, rusts the adjuster 4 and the inner cable 1, and causes the inner cable 1 to malfunction.In addition, in cold regions, water that has entered the adjuster 4 may freeze and cause the inner cable to rust. There were drawbacks such as the cable 1 being prone to malfunction.

In addition, in order to prevent dust in a cable that has an inner cable and an outer cable, as described in Japanese Utility Model Application No. 51-105944, the end of the outer cable is placed between the end fitting of the outer cable and the end fitting of the inner cable. It has been proposed to provide a dustproof cover configured as a bellows to cover the inner cable portion exposed from the inner cable in a sealed state, and to fit this cover onto the outer cable end fitting and the inner cable end fitting.

However, the throttle cable, for example,
As described in Publication No. 105944, in order to adjust the stroke of the inner cable during assembly, the length from the end face of the adjuster to the stopper when the throttle is fully open is adjusted using the adjuster so that it matches the predetermined gauge dimension. Since it is assembled, in the structure where both ends of the cover are fitted as described above, the stopper is covered by the cover, so the conventional inner cable stroke is adjusted using the stopper as the reference for stroke adjustment of the inner cable. This adjustment method has a problem in that adjustment is impossible and work efficiency during throttle cable assembly, including stroke adjustment of the inner cable, is reduced.

[Problems to be solved by the invention] This invention prevents water or dirt from entering the adjuster of the throttle cable, which requires stroke adjustment of the inner cable during assembly. Our objective is to provide a throttle cable with a waterproof and dustproof cover that prevents rusting or freezing, ensures smooth operation of the inner cable, and has the same ease of assembly as conventional throttle cables. It is something to do.

[Means for Solving the Problems] The throttle cable with a waterproof and dustproof cover of the present invention includes an outer cable, an inner cable that is movably inserted in the outer cable in the axial direction, and
A carburetor connector attached to the tip of the inner cable, an adjuster fixed to the carburetor side end of the outer cable, and an adjuster fitted between the carburetor connector and the adjuster of the inner cable, a stopper that serves as a reference for adjusting the stroke of the cable, the stopper covers the entire width between the adjuster tip and the carburetor connector, and extends and contracts beyond the operating width of the inner cable, and the carburetor connector The present invention is characterized in that it includes a cover formed of an elastic body in the form of a loose tube, which is attached to at least one of the adjuster and the adjuster by a stretching force, and is always in contact with the adjuster.

[Example] Next, the present invention will be explained based on an example shown in FIG.

Fig. 2 shows the main parts of the throttle cable with waterproof and dustproof cover of the present invention, and 10 is an inner cable that has a fork 11, which is a carburetor connection tool, attached to its tip and is inserted into the outer cable 12. . An adjuster 14 is fixed to the end of the outer cable 12 on the side of the fork 11 to fix and hold the outer cable 12 against the operation of the inner cable 10, and has a cylindrical shape and a nut 13 fitted on the outside. Reference numeral 15 is a rubber cover that is constricted into a cylindrical shape at both ends, and whose entire central portion is loose and tubular, which is elastic and retractable. 15
It is compressed and attached between the two by abutting pressure due to the stretching force, and covers the entire width between the two. A stopper 16 is fitted onto the inner cable 1 and serves as a reference for stroke adjustment of the inner cable when assembling the throttle cable.

This throttle cable with waterproof and dustproof cover is
The fork 11 at the tip is connected to a carburetor (not shown), the adjuster 14 is fixedly held to an engine body (not shown), etc., and the other end is connected to an accelerator pedal (not shown). When the inner cable 10 moves in the axial direction in conjunction with the movement of the accelerator pedal, since the space between the fork 11 and the adjuster 14 is covered with a flexible rubber cover, water, dust, etc. will be removed from the adjuster 14 and the inner cable 10. Intrusion through the gap 17 can be prevented.

In the above embodiment, the cover that expands and contracts beyond the operating width of the inner cable is a rubber cover, but any waterproof and flexible cover may be used.

[Effects of the invention] As described above, the throttle cable with a waterproof and dustproof cover of the invention covers the entire width between the adjuster tip and the carburetor connector, and can expand and contract beyond the operating width of the inner cable. A cover made of a loose tubular elastic body is provided to prevent water or dirt from entering the adjuster of the throttle cable, thereby preventing the inner cable, adjuster, etc. from rusting or freezing. In addition, since the cover is always in contact with at least one of the carburetor connector and adjuster due to the expansion force of the cover, it is possible to easily assemble the throttle cable, including stroke adjustment of the inner cable. This has an excellent effect in that the stroke of the inner cable can be easily adjusted in the same way as a conventional throttle cable by retracting the cover during installation.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view of a conventional throttle cable without a cover, and FIG. 2 is a partial sectional view of a throttle cable with a waterproof and dustproof cover according to the present invention. In the diagram, 1, 10...inner cable, 4, 14
...Adjuster, 5, 12...Outer cable,
6, 16... Stopper, 11... Carburetor connection tool (fork), 13... Nut, 15... Rubber cover, 3, 17... Gap.

Claims (1)

[Claims for Utility Model Registration] An outer cable, an inner cable inserted into the outer cable so as to be movable in the axial direction, a carburetor connector attached to the tip of the inner cable, and the carburetor side of the outer cable. an adjuster fixed to an end thereof, and a stopper fitted between the carburetor connector of the inner cable and the adjuster and serving as a reference for stroke adjustment of the inner cable during assembly; A loose tubular shape that covers the entire width between the carburetor connector and the adjuster, expands and contracts beyond the working width of the inner cable, and is attached to at least one of the carburetor connector and the adjuster by constant contact due to the stretching force. A throttle cable with a waterproof and dustproof cover, characterized by having a cover made of an elastic body.