JPS62175285A - Connecting section structure of operating cable for motor bi- and tri-cycle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a structure of a connecting part between, for example, a front and rear brake cable and a brake arm of a brake drum of a motorcycle or a scooter-type three-wheeled motor vehicle, and particularly relates to the structure of the connection part between the front and rear brake cables and the brake arm of a brake drum. Simplification 5 This invention relates to improving the ease of assembling a cover member attached to a connecting portion.

[Conventional technology]

Conventionally, in a braking device or a clutch device for a motorcycle or a scooter-type three-wheeled vehicle, an operating lever attached to a steering handle and a brake arm or thalasso arm, which is an operated member, are connected by a brake cable or clutch, which is an operating cable. It is connected with a cable, which transmits the movement of the operating lever to the braking device, etc.

Conventionally, as a connection structure between the brake cable and the brake arm, a fixing metal fitting formed at the outer cable end of the brake cable is fixed to the vehicle body side holding part,
The connecting fitting formed at the end of the inner cable is connected to the brake arm, a return coil spring is installed between this holding part and the brake arm, and a waterproof or mud-proof rubber cover is attached to this connection part. There is a structure equipped with In this conventional structure, in order to attach the cover, an annular groove or an annular protrusion is formed at the tip of the fixing fitting, and one end of the cover is engaged with this. There is.

[Problem that the invention seeks to solve]

The conventional structure described above requires a machining process to form an engaging part for engaging the cover at the tip of the fixing fitting of the outer cable, and when assembling the cover, one end of the cover is The complicated work of engaging the retaining portion is required, and as a result, the conventional structure described above has the problem that the number of processing steps increases and the ease of assembly is not very good.

Therefore, the present invention has been made to solve the problems of the conventional structure described above, and it is possible to reduce the number of processing steps and to improve the ease of assembling the cover member to the outer cable. The purpose is to provide a partial structure.

[Means for solving problems]

In the present invention, a return coil spring is installed between a vehicle body side holding part that holds a fixed part of an outer cable and an operated member to which an inner cable is connected, and a cylindrical cover member is installed to the connecting part. In the structure of the connection part of the operation cable for motorcycles and tricycles, a flange part is formed on the cover member described in 1 above, and the flange part is fitted into a support protrusion protruding from the end face of the fixed part, and the coil It is characterized by being pressed by a spring.

[Effect]

In the connecting part structure of the operating cable for motorcycles and tricycles according to the present invention, the flange part of the cover member is fitted into the supporting protrusion of the fixed part, and this is pressed by the conventional return coil spring. It is not necessary to form an engagement groove for attaching a cover member in the fixing part as in the conventional case, and the number of processing steps can be reduced. At this time, the cover member is positioned in the direction perpendicular to the axis by the support protrusion of the outer cable, and also in the axial direction by the pressing force of the spring, and as a result, the cover member can be held in a predetermined position, unlike the conventional cover. The process of engaging the member with the engagement groove is not necessary, and the ease of assembly is improved accordingly.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIGS. 1 to 3 are diagrams for explaining the structure of the operation cable connection portion of a scooter type motorcycle according to an embodiment of the present invention, and this embodiment is an example in which the present invention is applied to front and rear brake cables. In the figure, reference numeral 1 denotes a scooter-type motorcycle, and a front fork 4 supporting a front end 3 is pivotally supported at the front end of a body frame 2 of the motorcycle 1, and a steering handle is attached to the upper end of the core fork 4. 5 is attached to the vehicle body frame 2, and an engine unit 7 integral with a swing arm that supports a rear wheel 6 is pivotally supported substantially at the center of the vehicle body frame 2. In addition, a leg seal F'8 is provided at the front of the body frame 2, a footrest 9 is provided at the lower center, and a seat 10 is provided at the upper rear portion.
However, below these, side covers 11 are attached.

The rear brake device 12 of the rear wheel 6 and the rear brake lever 13 swingably attached to the left end of the steering handle 5 are connected by a rear brake cable 14 that is an operating cable. After this, the brake cable 14 consists of an outer cable 15 and an inch cable 16, the outer cable 15 is made of a flexible spiral tube whose outer peripheral surface is coated with resin, and the inner cable 16
is made of a wire rope made by twisting together a large number of small diameter wires, and is slidably inserted into the outer cable 15.

A cylindrical fixing fitting 15a is connected to the rear end of the outer cable 15, and is inserted into a holding fitting 17, which is a holding part on the vehicle body side, and is attached to the transmission case 7a of the engine unit 7 with a fixing bolt 17a. Fixed.

Further, a connecting fitting 16a made of a round bar is connected to the rear end portion of the inner cable 16. The rear end of this connection fitting 16a is threaded and inserted into a guide pin 12C of the brake device 12, and this guide pin 12c is connected to the left and right sides formed at the tip of the brake arm 12a. It is inserted between the support pieces 12b. An adjustment nut 16b is screwed onto the rear end of the connection fitting 16a.

A cylindrical waterproof boot 18, which is a cover member, is attached to a portion of the inner cable 16 that protrudes from the fixing fitting 15a. The waterproof boot 18 is made of rubber and has a bellows-like shape that can be expanded and contracted, and its rear end is fitted to the inner cable 16 with a predetermined tightening margin.

Further, a flange portion 18a is integrally formed on the front end portion, and this flange portion 18a fits into a support protrusion 15b protruding from the rear end of the fixing metal fitting 15a, and also fits into the rear end surface of the holding metal fitting 17. are in contact. Furthermore, the brake arm 12a of the inner cable 16 and the holding fitting 1
A return coil spring 19 is installed in a compressed state between 7 and 7, and one end of this spring 19 presses the flange portion 18a of 1.

Further, the front brake device 20 of the front wheel 3 and a front brake lever (not shown) attached to the right end of the steering handle 5 are connected by a front brake cable 21. The front brake cable 21 has substantially the same structure as the rear brake cable 14, and the fixing fitting 22a of the outer cable 22 is fixed to a holding portion 20c integrally formed on the brake drum 20b. In addition, the connection fitting 23a of the inner cable 23 is connected to the brake arm 20.
It is inserted through the guide pin 20d of the metal fitting 23a, and an adjustment nut 23b is screwed onto the tip of the metal fitting 23a, and this connecting metal fitting 23a is located at the bottom.

And the brake arm 20a of the inner cable 23
A cylindrical mud-proof cover 24 is attached to the portion between the holding portions 20C so as to be located at the lower front. This mud-proof cover 24 has the same bellows shape as the above-mentioned waterproof cover 18, and has a flange part 24a integrally formed inward at its rear end, and this flange part 24a is connected to the above-mentioned fixing metal fitting 22.
It fits into the support protrusion 22b protruding from the support part 22b and abuts on the front end surface of the holding part 20C. Furthermore, a return coil spring 25 is inserted into the mud-proof cover 24, and this spring 25 is inserted into the flange portion 24.
4a is pressed against the chain end surface of the holding portion 20c.

Next, the effects of this embodiment will be explained.

First, to explain the case where the rear brake cable 14 of this embodiment is connected to the rear brake device 12, this brake cable 14 is inserted into the holding fitting 17, and the fixing fitting 15a of the outer cable 15 is fixed by this holding fitting 17. do. And the supporting protrusion 15b of the fixing fitting 15a
The flange part 18a of the waterproof boot 18 is fitted to the flange part 18a of the waterproof boot 18, and the coil spring 19 is attached so that the left end in the figure is fitted into the waterproof boot 18 and comes into contact with the flange part 18a, and the connecting fitting 16a of the inner cable 16 is attached. Insert the adjusting nut 16b into the guide pin 12C of the brake arm 12a, and screw the adjusting nut 16b onto the fitting 16a.
6b adjusts the operating state of the brake device 12. As a result, the rear end of the waterproof boot 18 is fitted with the inner cable 16 with a predetermined tightening margin, and the flange part 18a is fitted with the support protrusion 15b, and the rear end of the waterproof boot 18 is fitted against the rear end surface of the holding fitting 17. This waterproof boot 18 is pressed by a coil spring 19 as a result of which this waterproof boot 18
is reliably positioned at a predetermined position in the direction perpendicular to the axis and in the axial direction, and also reliably seals between the rear end portion of the outer cable 15 and the inner cable 16. Further, in this case, the coil spring 19 is positioned at a predetermined position in the direction perpendicular to the axis by the waterproof boot 18.

Moreover, when connecting the front brake cable 21 to the front brake device 20, this brake cable 21 is connected to the holding part 2.
0c, fit the flange part 24a of the mud-proof boot 24 into the support protrusion 22b of the fixing metal fitting, attach the coil spring 25 so that the right end in the drawing abuts the flange part 24a, and then attach the inner cable 23 to the connecting metal fitting of the inner cable 23. 23a is inserted into the guide pin 20d of the brake arm 20a, and the adjustment nut 23b is screwed on to adjust the operating state of the brake device 20.

Then, as a result, the mud-proof boot 24 has its flange portion 2
4a fits into the support protrusion 22b, and the holding part 20
As a result, the mud-proof cover 24 is positioned at a predetermined position in the axis-perpendicular direction 5 and in the axial direction, and also covers the connection fitting 233 portion of the inner cable 16 and the coil spring 25. That will happen.

In this way, in this embodiment, waterproof boots 18. The flange portions 18a, 24a of the mud-proof boot 24 are pressed by conventionally provided coil springs 19.25, so that the fixing metal fittings 15a.

There is no need to process and form an engagement groove for fixing the boot on 22a as in the conventional case, and the number of processing steps can be reduced. Also boots 18
．． 24, these flange portions 18a,
24a in the direction perpendicular to these axes simply by pressing with the coil spring 19.25.

Positioning in the axial direction is possible, and there is no need for the conventional effort of engaging a boot with an engagement groove, etc., and ease of assembly can be improved accordingly.

Further, in the rear brake device 12, waterproof boots 18
As a result, the coil spring 18 can be positioned in the axial direction, and the space between the outer cable 15 and the inner cable 16 can be reliably sealed, and rainwater etc. can be prevented from entering the cable 14. In addition, in the front brake device 20, the connection fittings 23 are
It is possible to prevent mud and the like from adhering to the adjusting screw part a and the coil spring 25. Further, since the front end opening of the mud-proof boots 24 is located downward, water that has entered the boots 24 can be easily drained away.

In addition, in the above embodiment, the waterproof boots 18. Mudproof boots 2
The flange portions 18a and 24a of 4 are the holding fittings 17, respectively.
．． Although the holding portion 20c is made to come into contact with the holding portion 20c, this may be made to come into contact with the end surfaces of the fixing fittings 15a, 22a of the outer cable 15.22.

Further, in the above embodiments, a brake cable has been described, but the present invention is not limited to a brake cable, but can also be applied to, for example, a clutch cable. Furthermore, although the above embodiments have been described for use in scooter-type motorcycles, the present invention can of course be applied to other types of motorcycles, and even to scooter-type tricycles having one front wheel and two rear wheels.

〔Effect of the invention〕

As described above, according to the connection part structure of a cable for a motorcycle or tricycle according to the present invention, a flange part is formed on the cylindrical cover member attached to the connection part part of the inner cable, and this flange part is attached to the fixing metal fitting. Since it is fitted into a support protrusion protruding from the end face and pressed by a return coil spring, it is possible to eliminate the need for an engagement groove for the cylindrical cover member, reducing the number of machining steps. This has the effect of improving ease of assembly.

[Brief explanation of drawings]

1 to 3 are diagrams for explaining the connection structure of a brake cable for a scooter type motorcycle according to an embodiment of the present invention, and FIG. 1(a) is a side view of the rear brake device portion; Figure (b) is an enlarged view of the main part, Figure 2 (a)
2(b) is a side view of the front brake device, FIG. 2(b) is an enlarged sectional view of the main part thereof, and FIG. 3 is a side view of a scooter type motorcycle to which the structure of the embodiment described above is applied. In the figure, 1 is a scooter type motorcycle, 12a, 20
a is the plagiar arm (operated member), 14.21 is the front,
Rear brake cable, 15.22 is outer cable, 1
5a, 22a are fixing fittings (fixing parts), 15b, 22b are supporting protrusions, 16° 23 are inner cables, 16a, 23
a is a connecting fitting (connection part), 17 is a holding fitting (holding part),
18゜24 is waterproof, mudproof cover (cover member), 18a
. 24a is a flange part, 19.25 is a coil spring,
20C is a holding part.

Claims (1)

[Claims] (1) The fixing part formed at the end of the outer cable is fixed to the vehicle body side holding part, and the connecting part formed at the end of the inner cable slidably inserted into the outer cable is connected to the operated member. A return coil spring is installed in a compressed state between the operated member and the vehicle body side holding part, and a cylindrical cover member made of an elastic member is provided at the boundary between the inner cable and the fixed part. In the attached structure for connecting a cable for a motorcycle or tricycle, a flange portion is formed at one end of the cylindrical cover member, and the flange portion is fitted into a support protrusion protruding from the end surface of the fixed portion. , a connecting part structure of an operation cable for a motorcycle or tricycle, characterized in that it is pressed by the above-mentioned coil spring.