JP2525589Y2 - Motorcycle front wheel disc brake hose plumbing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application field] The present invention relates to a hose piping device for a front wheel disc brake of a motorcycle having an inverted front fork.

[Conventional technology and its problems]

Motorcycles sometimes use hydraulic disc brakes on the front wheels. In that case, a hydraulic hose connects a master cylinder operated by a handle lever and a caliper sandwiching a brake disk attached to a front wheel. The inverted front fork has the advantage that the cushion stroke can be increased compared to the upright front fork.However, when the inner tube shrinks, it enters the outer tube, so the hydraulic hose A support cannot be provided, and therefore a hydraulic hose connected to the caliper is arranged along the outer surface of the inner tube, guided upward along one side of the inner tube, and connected to the master cylinder.

Therefore, it is necessary to increase the length of the hydraulic hose, and the bending operation of the hydraulic hose corresponding to the cushion stroke is repeated. If the hydraulic hose has few linearly arranged portions, it will bend sharply, and the same portion will be bent repeatedly, resulting in a disadvantage of shortening the durability.

[Purpose of the invention]

The idea is that the master cylinder of the handle lever and the caliper that sandwiches the brake disc of the front wheel are connected by a hydraulic hose, and the length where the hydraulic hose is bent and piped is located near the axle bracket, and is linearly arranged. The parts to be bent and plumbed are held with holding brackets to increase the durability of the hydraulic hose and to improve the responsiveness of operation.To obtain a hose plumbing system for motorcycle front wheel disc brakes equipped with an inverted front fork Aim.

[Structure of device]

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

As shown in FIG. 1, the inverted front fork 1
The outer tube 4 is rotatably mounted on the head pipe 3 of the frame 2 so that it can be extended and contracted between the outer tube 4 and the inner tube 5 slidably held by being inserted from below the tube 4. Has become. As shown in FIGS. 1 and 2, an axle holder 6 is connected to a lower end of the inner tube 5, and below the axle holder 6, an extension line of the sliding axis of the inverted front fork 1 is provided.
An axle hole portion 7 in which a bearing hole for an axle 8 of a front wheel 9 is drilled forward.
Are formed to project in an arc shape. A brake disc 10 is mounted on one side of the front wheel 9, and a caliper 11 connected to the rear surface of the axle holder 6 is disposed across the brake disc 10 so that a wheel cylinder in the caliper 11 sandwiches the brake disc. ing. Handle 12
The upper end of a hydraulic hose 15 is connected to a master cylinder 14 which is operated by a handle lever 13 mounted on the master cylinder 14. The hydraulic hose 15 extends downward along the front surface of the inverted front fork 1, bends downward along the arc-shaped projecting surface of the axle hole portion 7 of the axle holder 6, and is connected to the end fitting 16.
Is connected to a connection port 17 provided on the caliper 11 downward. The holding bracket 18 is made of a steel plate press or the like, and is bent downward in a shape along the arc-shaped surface of the axle hole 7 of the axle holder 6, and has a vertical center in the center as shown in FIGS. Is provided with a U-shaped groove 19. The holding fitting 18 is passed through the hydraulic hose 15 through the groove 19 and fastened to the axle hole 7 with a bolt 20.

[Action of the invention]

Since the hydraulic hose 15 connects the end fitting 16 connected to the tip to the downwardly-directed connection port 17 of the caliper 11, the place where the hydraulic hose 15 is bent and disposed is the axle hole 7 of the axle holder 6. Only along the arc-shaped protruding surface of. The hydraulic hose 15 is located above the axle hole 7.
Due to the arc-shaped protruding surface, it is arranged substantially linearly apart from the inner tube 5, the curvature when bent by the cushion of the front fork 1 can be increased, and there is no strongly bent portion, so that the durability can be increased. The arc-shaped protruding surface of the axle hole 7 of the hydraulic hose 15 that is bent is passed through the groove 19 of the holding bracket 18 and held in a bent state, so that it can be bent or extended. In addition to this, it is possible to prevent the pebbles on the ground from directly hitting the bent portion, and the durability is high. In addition, since the hydraulic hose 15 has almost all linearly arranged portions and little bending deformation, the responsiveness of operation is good.

[Effect of the invention]

As described above, the present invention is directed to an axle holder attached to the lower end of an inner tube of an inverted front fork and having a front wheel axle on a front side of an extension of a sliding axis line of the front fork; In a motorcycle including a caliper for braking a front wheel attached to a rear side of an extended line of a sliding axis and a hydraulic hose connecting the caliper and a master cylinder operated by a handle lever, a lower portion of the axle holder extends from the caliper. A holding metal fitting for protection covering the bent portion area of a hydraulic hose that is bent upward in front of the axle and extends forward in front of the front fork in parallel with the front fork is attached to and detached from the axle holder. The hydraulic hose that extends upwards in parallel with the front fork The source is
The piping can be made substantially linearly, the curvature when bent by the cushion of the front fork can be increased, and there can be no repeatedly bent portions, so that the durability can be increased. or,
Near the axle hole 7 where the hydraulic hose is bent and piped,
It is held in a bent state by passing it through the groove of the holding fitting, and there is no change in bending or extension, and it is prevented that pebbles on the ground directly hit the bent portion, and the durability is high. The bent portion is only in the vicinity of the axle hole, and most of the straight piping portions have little bending deformation, so that the responsiveness of the operation can be improved.

[Brief description of the drawings]

1 shows an embodiment of the present invention, FIG. 1 is a side view, FIG. 2 is an enlarged side view of a main part, and FIG. 3 is a partial cross-sectional view of FIG. 1 ... front fork, 6 ... axle holder, 7 ...
... axle hole, 9 ... front wheel, 10 ... brake disc, 11
… Caliper, 13… Handle lever, 14… Master cylinder, 15… Hydraulic hose, 16… End fitting, 18
... holding brackets, 19 ... grooves.

Claims (1)

(57) [Scope of request for utility model registration] An axle holder attached to a lower end of an inner tube of an inverted front fork and having a front wheel axis ahead of an extension of a sliding axis of the front fork, and an extension of a sliding axis of the front fork of the axle holder. A motorcycle having a caliper for braking the front wheels attached to the rear side and a hydraulic hose connecting the caliper and a master cylinder operated by a handle lever, wherein the caliper passes below the axle holder and passes through the axle of the axle. A holding bracket for protection, which is bent upward at the front and covers the bent portion area of the hydraulic hose extending upward in front of the front fork in parallel with the front fork, is removably fastened to the axle holder. A hose piping device for a front wheel disc brake of a motorcycle.