JPH0212154Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to the structure of a brake wire receiver that is integrally molded into a case made of a split mold.

(Prior Art) There have been conventional cases in which a brake wire receiver is integrally formed in a transmission case of a scooter. In this case, the wire receiver must have a gap for inserting the inner wire of the brake wire and an outer holding hole for holding the outer wire. Here, the diameter of this outer holding hole is
larger than the gap. For this reason, if the direction of mold division and the center line of the outer holding hole are not parallel, such as when making a transmission case using a left and right mold, the outer holding hole must be formed by machining after disassembling the mold. Must be. This resulted in the problem of increased machining man-hours and poor productivity.

(Purpose of the invention) The present invention was developed in view of the above circumstances, and is designed to solve the problem of molding the case and holding the brake wire almost parallel to the mold surface in a case made with a left and right split mold. It is an object of the present invention to provide a brake wire receiving structure that can be made at one time and requires no machining after demolding.

(Structure of the invention) The purpose of the invention is to provide at least three hold arms that are integrally molded on the case so as to be alternately adjacent to each other across the split surface of the case made with a split mold, and each hold arm This is achieved by forming a gap for passing the inner wire therebetween, and forming a recess for receiving the outer wire on the surface of each hold arm that faces the mold-divided surface.

(Example) The present invention will be explained in detail below based on the drawings.

FIG. 1 is a side view of a two-wheeled scooter that is an embodiment of the present invention, FIG. 2 is a perspective view of a brake wire receiving portion thereof, and FIG. 3 is an exploded perspective view of the same.

In FIG. 1, the reference numeral 10 is a frame, which includes a steering shaft cylinder 12, a main tube 14, and a pair of left and right rear tubes 1.
6 (only one shown). A steering shaft 18 rotatably held in a steering shaft cylinder 12 includes a steering front wheel 2.
0 and a steering bar handle 22 are attached.

24 is a power unit, which is a vertical engine 2.
6, a transmission case 28 extending rearward from the left side of the engine 26, and a rear wheel 30 held at the rear of the transmission case 28 are integrally assembled. A known V-belt type continuously variable transmission (not shown) is housed within the transmission case 28, and the rotation of the engine 26 is transmitted to the rear wheels 30 via this transmission. 32 is an intake air cleaner attached to the upper surface of the transmission case 28, 34 is a carburetor, and 36 is an exhaust pipe.

The power unit 24 has its front end pivoted to a pivot bracket 38 fixed to the rear tube 16 on a pivot shaft 40 so as to be able to swing up and down. The rear portion of the transmission case 28 is elastically supported by the rear tube 16 via a buffer unit (not shown). 42 is a rear cover that covers the upper part of the power unit 24, and 44 is a driver's seat.

A drum brake (not shown) is built into the hub of the rear wheel 30, and a brake lever 46 is disposed so as to rise upward from between the transmission case 28 and the rear wheel 30.

The transmission case 28 is formed of a case body and a case cover that covers the left side of the case body. The case body and the case cover are each die-cast using a left and right split mold (not shown). A brake wire receiver 50 shown in FIG. 2 is integrally molded on the upper part of the transmission case 28.

This brake wire receiver 50 is connected to the transmission case 2
Three hold arms 52, 5 are integrally molded on the case body or case cover so as to be adjacent to each other in the longitudinal direction across the molded surface (parallel to the longitudinal direction of the vehicle body) of the case body or case cover 8.
4,56. Each hold arm 52,5
A gap 60, 60 is formed between the brake wires 4 and 56, through which the inner wire 58a of the brake wire 58 passes. Furthermore, a brake wire 5 is provided on the surface of each hold arm 52, 54, 56 that faces the mold-divided surface.
Arc-shaped recess 6 that receives outer wire 58b of No. 8
2, 64, and 66 are formed.

In the embodiment shown in FIGS. 2 and 3, the outer wire 5
8b is integrally formed with the flange 68, the recess 62 of the hold arm 52 engages with the outer peripheral surface of the flange 68, and the end surface 54a of the hold arm 54 acts as a stopper against which the flange 68 abuts and receives the wire reaction force. It is configured so that

In this way, each hold arm 52, 54, 5
6 and each of the recesses 62, 64, and 66 are alternately located in the cutting direction (left and right direction) of the left and right split molds so that they do not overlap with each other.
It can be die-cast integrally with 8.

As shown in FIG. 3, the brake wire 58 is constructed by first inserting the inner wire 58a into the gap 60 and pulling it rearward, so that the outer wire 58b moves into the recesses 62, 64,
66 and a flange 68 comes into contact with the end surface 54a of the hold arm 54. At this time, outer wire 5
8b is securely held in each recess 62, 64, 66. It goes without saying that the rear end of the inner wire 58a is locked to the brake lever 46, and the front end is connected to a handlebar brake lever (not shown), a brake pedal (not shown), etc.

FIG. 4 is a perspective view of another embodiment, and FIG. 5 is a side sectional view of the brake wire attached. The outer wire 58b of this embodiment does not have a flange. Therefore, in order to lock the end face of the outer wire 58b to the hold arm 56A, a stepped portion 66a is formed in the recess 66A of the hold arm 56A. In FIGS. 4 and 5, the same parts as those in FIGS. 2 and 3 are indicated by the same reference numerals with an "A" added thereto, so their explanation will not be repeated.

In each of the above embodiments, three hold arms are provided, but if there are three or more, the brake wire can be held securely, and the present invention also includes such hold arms.

(Effect of the invention) As described above, the present invention provides at least 3 parts to the case, alternately adjacent to each other across the molded surface of the case.
The structure is configured so that the outer wire is received in a recess provided on the surface of each hold arm opposite to the mold-divided surface. The hold arms do not overlap in the mold dividing direction, and can be formed integrally with the case by die casting or the like, and there is no need for machining such as holes for passing wires after casting. This reduces the number of processing steps and improves productivity.

[Brief explanation of drawings]

Fig. 1 is a side view of a scooter to which one embodiment of the present invention is applied, Figs. 2 and 3 are a perspective view of the brake wire receiver and an exploded perspective view thereof, and Figs. 4 and 5 are perspective views of other embodiments. and its side sectional view. 28...Transmission case, 50...Brake wire receiver, 52, 54, 56, 52A, 54A, 56
A... Hold arm, 58... Brake wire, 58a... Inner wire, 58b... Outer wire, 60... Gap, 62, 64, 66, 62
A, 64A, 66A... recess.

Claims (1)

[Scope of utility model registration request] At least three hold arms are integrally formed on the case so as to be alternately adjacent to each other across the split surface of the case made with a split mold, and a gap is formed between each hold arm to allow the inner wire to pass through. . A brake wire receiving structure, wherein a recess for receiving an outer wire is formed on a surface of each hold arm that faces the molded surface.