JP2002104161A - Brake hose piping structure in vehicle having swing arm - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a brake hose piping structure in a vehicle having a swing arm capable of minimizing a bent quantity of the brake hose without limiting a setting position of a brake master cylinder. SOLUTION: The brake hose 16 is made to crawl along a car body frame 2 from the brake master cylinder 13 to a journaling part A of the swing arm 6, bent toward a substantially central part of the car body frame in this journaling part and then bent in the opposite direction, and made to crawl to the proximity of the outside of the car body frame and then to a brake caliper 12 along the swing arm.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brake hose piping structure applied to a vehicle having a swing arm such as a motorcycle.

[0002]

2. Description of the Related Art Conventionally, for example, in a vehicle having a swing arm such as a motorcycle, a brake master cylinder is mounted on a vehicle body frame that supports the swing arm so as to swing, and the swing arm is mounted on the vehicle. A brake caliper is mounted and connected to each other by a brake hose. One example of the structure is a structure described in Japanese Patent Publication No. 2545224.

[0003] This technology uses a brake master cylinder,
Attached along the vertical direction in the vicinity of the swing arm support portion of the body frame, and also mounted a brake caliper on the swing arm, and provided a connecting pipe near the support portion of the swing arm in a vertically penetrated state, A brake hose connected to a brake caliper is connected to an upper end of the connection pipe after being laid along the upper part of the swing arm, and a brake hose connected to the brake master cylinder is connected to a lower end of the connection pipe. It has the structure connected to. With such a configuration, the amount of expansion and contraction and vibration of the brake hose when the swing arm swings is to be suppressed.

[0004]

However, such a conventional technique has the following problems to be improved. That is, in the above technology, when the installation position of the brake master cylinder is changed to a position away from the support of the swing arm, the brake hose connected to the brake master cylinder is likely to bend. As a result, interference between the brake hose and other structures is likely to occur. Therefore, a brake master cylinder must be installed near the bearing of the swing arm on the vehicle body frame. This is a problem that the position is restricted. Therefore, the brake master cylinder
This limits the application of the vehicle body frame to a model that cannot be installed near the support of the swing arm.

The present invention has been made in view of such a conventional problem, and a swing arm capable of minimizing a bending amount of a brake hose without restricting an installation position of a brake master cylinder. It is an object of the present invention to provide a brake hose piping structure in a vehicle provided with:

[0006]

According to a first aspect of the present invention, there is provided a brake hose piping structure for a vehicle having a swing arm according to the first aspect of the present invention. A brake hose piping structure in a vehicle having a swing arm formed by connecting a brake caliper mounted on a swing arm swingably supported by the vehicle body frame by a brake hose, wherein the brake hose comprises:
Crawling from the brake master cylinder along the body frame to the support of the swing arm, and then bending at this support toward the approximate center of the body frame, then bending in the opposite direction, Crawling to the vicinity of the outside, and then crawling to the brake caliper along the swing arm.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes
1 shows a motorcycle as a vehicle to which the present embodiment is applied, a vehicle body frame 2, a front fork 3 rotatably mounted on a front portion of the vehicle body frame 2, and a rotatable lower end of the front fork 3. Front wheel 4 mounted on
A steering handle 5 attached to an upper end of the front fork 3, a swing arm 6 pivotally supported at the lower rear of the body frame 2, and a swing end of the swing arm 6. Rear wheel 7 mounted on
And A fuel tank 8 is mounted above the vehicle body frame 2 behind the steering handle 5, and a seat 9 is mounted behind the fuel tank 8. An engine 10 is mounted below the fuel tank 8.

On the other hand, in the vicinity of the mounting portion of the swing arm 6 on which the rear wheel 7 is mounted, as shown in FIG.
1 and a brake master cylinder 13 is provided below the side of the body frame 2 with a bracket 14 as shown in FIG.
Is mounted via. The reserve tank 15 supported by the vehicle body frame 2 is connected to the brake master cylinder 13.

The brake master cylinder 13
And the brake caliper 12 are connected to a brake hose 16.
Are linked by

Further, a radiator 17 is mounted on a front portion of the vehicle body frame 2, and an air cleaner 18 is mounted behind the engine 10 and below the seat 9.

In the present embodiment, as shown in FIGS. 4 and 3, the brake hose 16 is connected to the vehicle body frame 2 from the brake master cylinder 13 along a down tube 2a constituting the vehicle body frame 2. And is crawled to the rear part along the main rail 2c, as shown in FIG. 3, and then to the junction between the head pipe 2b and the main rail 2c.
As shown in FIG. 2, the brake caliper is moved from the rear end of the main rail 2 c to the support A of the swing arm 6, and further from the support A of the swing arm 6 along the swing arm 6. Crawled to twelve.

The brake hose 16 is divided at portions that are largely bent, and is connected to each other via connectors 19 and 20 provided at these bent portions. The brake hose 16 itself is prevented from being sharply bent, and the brake hose 16 is fixed to the vehicle body frame 2.

As shown in FIG. 2, the end of the brake hose 16 led to the bearing portion A is bent near the inside of the vehicle body once near the side of the vehicle body and near the center. After being crawled up to the center of the vehicle body, it is bent so as to be inverted toward the outside of the vehicle body, returned to the vicinity of the side of the vehicle body, and thereafter crawled along the swing arm 6.

A coupling 21 is provided at a position where the bearing A is folded substantially at the center.
Further, at least a portion of the brake hose 16 located between the swing arm 6 and the coupler 21 is formed of a flexible material, and many other portions are provided. Is formed by a metal tube.

In the brake hose piping structure of the vehicle having the swing arm according to the present embodiment, the brake hose 16 is connected to the support portion A of the swing arm 6 on the side of the vehicle body frame 2. After being once bent inward from the portion, and further folded back to the vicinity of the outside of the body frame 2, it is made to follow the swing arm 6, so that when the swing arm 6 swings, the center of the body frame 2 is By the torsion of the brake hose 16 from the part to the vicinity of the outside,
The swing of the swing arm 6 is smoothly allowed, and the amount of expansion and contraction of the brake hose 16 is minimized.

Therefore, even when the swing arm 6 is swung, interference between the brake hose 16 and another structure disposed near the support portion A is suppressed. In addition, the installation position of the brake master cylinder 13 can be set arbitrarily. As a result, not only the installation position of the brake master cylinder 13 but also the layout freedom in the vicinity of the bearing of the swing arm 6 is increased.

The various shapes, dimensions, and the like of the components shown in the above embodiment are merely examples, and can be variously changed based on design requirements and the like. For example, in the above-described embodiment, an example has been described in which the brake hose 16 is formed of a flexible material at a portion positioned near the support portion A. It is also possible.

[0018]

As described above, according to the brake hose piping structure of the vehicle provided with the swing arm according to the present invention, the brake hose is once moved inward from the side of the vehicle body frame at the support of the swing arm. After being bent, further folded back to the vicinity of the outside of the body frame, and then along the swing arm, when the swing arm swings, it is twisted from the center of the body frame to the vicinity near the outside. By virtue of this, it is possible to smoothly allow the swing arm to swing, and to minimize the amount of expansion and contraction of the brake hose. Therefore, when the swing arm is swung, it is possible to suppress interference between the brake hose and another structure disposed in the vicinity of the support portion, and furthermore, to install the brake master cylinder. The position can also be set arbitrarily. As a result, it is possible to increase the degree of freedom in the layout not only in the installation position of the brake master cylinder but also in the vicinity of the support portion of the swing arm.

[Brief description of the drawings]

FIG. 1 is a side view showing a motorcycle as a vehicle to which an embodiment of the present invention is applied.

FIG. 2 shows one embodiment of the present invention, and is a perspective view of a support portion of a swing arm as viewed from the rear of the vehicle body.

FIG. 3 is a perspective view of one embodiment of the present invention, showing the arrangement of a brake hose around a vehicle body frame, when the vehicle body frame is viewed from the rear of the vehicle body.

FIG. 4 shows one embodiment of the present invention, and is a perspective view showing a mounted state of a brake master cylinder as viewed from the front of the vehicle body.

[Description of Signs] 1 Motorcycle 2 Body frame 2a Down tube 2b Head pipe 2c Main rail 3 Front fork 4 Front wheel 5 Steering handle 6 Swing arm 7 Rear wheel 8 Fuel tank 9 Seat 10 Engine 11 Bracket 12 Brake caliper 13 Brake master cylinder 14 Bracket 15 Reserve tank 16 Brake hose 17 Radiator 18 Air cleaner 19/20/21 Coupler A Bearing

Claims (1)

[Claims] 1. A brake master cylinder mounted on a vehicle body frame, and a brake caliper mounted on a swing arm swingably supported by the vehicle body frame,
A brake hose piping structure in a vehicle having a swing arm connected by a brake hose,
The brake hose is crawled from the brake master cylinder along the body frame to the support of the swing arm, and then bent at the support toward a substantially central portion of the body frame, and then bent in the opposite direction. A hose having a swing arm and a brake caliper along the swing arm.