JP4067753B2 - Brake hose piping structure in a vehicle with a swing arm - Google Patents

Description

[0001]
BACKGROUND 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]
[Prior art]
Conventionally, for example, in a vehicle equipped with a swing arm such as a motorcycle, a brake master cylinder is mounted on a body frame that supports the swing arm so as to be swingable, and a brake caliper is mounted on the swing arm. These are connected by a brake hose, and a structure described in Japanese Patent No. 2545224 is an example of the structure.
[0003]
In this technology, a brake master cylinder is mounted in the vertical direction in the vicinity of a swing arm support portion of a vehicle body frame, a brake caliper is mounted on the swing arm, and a connecting pipe is mounted in the vicinity of the swing arm support portion. A brake hose provided in a vertically penetrating state and connected to the brake caliper is connected to the upper end of the connecting pipe after being slid along the upper part of the swing arm, and also connected to the brake master cylinder. A brake hose is connected to the lower end of the connecting pipe.
And by such a structure, it is going to suppress the expansion-contraction amount and vibration of a brake hose at the time of swing of a swing arm.
[0004]
[Problems to be solved by the invention]
By the way, in such a conventional technique, the following problems to be improved remain.
That is, in the technique, when the installation position of the brake master cylinder is changed to a position away from the support portion of the swing arm, the brake hose connected to the brake master cylinder is likely to be bent. As a result, the brake hose and other structures are likely to interfere with each other, so the brake master cylinder must be installed in the vicinity of the swing arm support portion of the body frame, and the brake master cylinder is installed. The problem is that the position is limited.
Therefore, application to a model in which the brake master cylinder cannot be installed in the vicinity of the swing arm support portion of the body frame is limited.
[0005]
The present invention has been made in view of such conventional problems, and includes a swing arm capable of minimizing the amount of bending of the brake hose without limiting the installation position of the brake master cylinder. It aims at providing the brake hose piping structure in vehicles.
[0006]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a brake hose piping structure in a vehicle including a swing arm, wherein a brake master cylinder mounted on a vehicle body frame and a swingable body frame are provided to achieve the above-described object. A brake hose piping structure in a vehicle having a swing arm in which a brake caliper mounted on a supported swing arm is connected by a brake hose, and the brake hose is extended from a brake master cylinder along a vehicle body frame. The swing arm is supported to the support portion, and then a coupler is provided at a substantially central position of the support portion, and then connected to the vicinity of the outside of the vehicle body frame, and then the brake is moved along the swing arm. It was crawl up the caliper at least the Suingua of the brake hose The portion located between the vehicle and the coupler is formed of a flexible material, and the swing arm is twisted between the center of the vehicle body frame and the vicinity of the outer side of the swing arm. The swinging is allowed smoothly .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
In FIG. 1, reference numeral 1 denotes a motorcycle as a vehicle to which the present embodiment is applied. A vehicle body frame 2, a front fork 3 rotatably attached to a front portion of the vehicle body frame 2, and the front fork A front wheel 4 rotatably attached to the lower end portion of 3, a steering handle 5 attached to the upper end portion of the front fork 3, and a swing arm 6 supported so as to be swingable on the lower rear side of the body frame 2. , And a rear wheel 7 rotatably mounted on the swing end of the swing arm 6.
A fuel tank 8 is mounted on the upper part of the vehicle body frame 2 and behind the steering handle 5, and a seat 9 is mounted on the rear of the fuel tank 8. An engine 10 is mounted below the fuel tank 8.
[0008]
On the other hand, a brake caliper 12 is mounted on the swing arm 6 in the vicinity of the mounting portion of the rear wheel 7 via a bracket 11 as shown in FIG. 2, and as shown in FIG. A brake master cylinder 13 is mounted below the side of the body frame 2 via a bracket 14.
A reserve tank 15 supported by the body frame 2 is connected to the brake master cylinder 13.
[0009]
The brake master cylinder 13 and the brake caliper 12 are connected by a brake hose 16.
[0010]
Further, a radiator 17 is attached to the front portion of the vehicle body frame 2, and an air cleaner 18 is attached to the rear of the engine 10 and below the seat 9.
[0011]
In the present embodiment, the brake hose 16 forms the vehicle body frame 2 from the brake master cylinder 13 along the down tube 2a that forms the vehicle body frame 2, as shown in FIGS. As shown in FIG. 3, the head pipe 2b and the main rail 2c are wound up to the joining portion, and then, the main rail 2c is wound up to the rear portion thereof. Then, as shown in FIG. From the rear end of the swing arm 6 to the support portion A, the swing arm 6 is supported from the support portion A to the brake caliper 12 along the swing arm 6.
[0012]
And the said brake hose 16 is divided | segmented in the part bent largely, and is mutually connected via the couplers 19 * 20 arrange | positioned in these bent parts, Thereby, brake hose 16 itself is Abrupt bending is prevented and the brake hose 16 is fixed to the vehicle body frame 2.
[0013]
As shown in FIG. 2, the end of the brake hose 16 led to the support portion A is bent toward the inside of the vehicle body and is wound up to the vicinity of the center in the vicinity of the side of the vehicle body. After that, at the center of the vehicle body, it is bent so as to be reversed toward the outside of the vehicle body and returned to the vicinity of the side portion of the vehicle body, and thereafter, it is wound along the swing arm 6.
[0014]
And the coupler 21 is provided in the position turned back in the substantially center part of the said support part A. As shown in FIG.
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. Is formed of a metal tube.
[0015]
In the brake hose piping structure in the vehicle including the swing arm according to the present embodiment configured as described above, the brake hose 16 is temporarily attached to the support portion A of the swing arm 6 from the side of the body frame 2. After being bent inward and then folded back to the vicinity of the outside of the vehicle body frame 2, it is adapted to follow the swing arm 6. The twisting of the brake hose 16 in the vicinity allows the swing arm 6 to smoothly swing, and the amount of expansion and contraction of the brake hose 16 is minimized.
[0016]
Therefore, even when the swing arm 6 is swung, interference between the brake hose 16 and another structure disposed in the vicinity of the support portion A is suppressed.
Moreover, the installation position of the brake master cylinder 13 can be arbitrarily set.
As a result, not only the installation position of the brake master cylinder 13 but also the degree of freedom of layout in the vicinity of the support portion of the swing arm 6 is increased.
[0017]
Note that the shapes, dimensions, and the like of the constituent members shown in the above embodiment are merely examples, and various changes can be made based on design requirements and the like.
For example, in the above-described embodiment, the example in which the brake hose 16 is formed of a flexible material in a portion positioned in the vicinity of the support portion A has been described. However, the entire brake hose 16 is formed of a flexible material. It is also possible to do.
[0018]
【The invention's effect】
As described above, according to the brake hose piping structure in a vehicle including a swing arm according to the present invention, after the brake hose is bent inward from the side of the vehicle body frame once in the support portion of the swing arm, Furthermore, since it is adapted to follow the swing arm after being folded back to the vicinity of the outside of the body frame, when the swing arm swings, a twist is caused between the center of the body frame and the vicinity of the outside. The swing arm can be allowed to swing smoothly, and the amount of expansion and contraction of the brake hose can be minimized. 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 the installation of the brake master cylinder. The position can also be set arbitrarily. As a result, not only the installation position of the brake master cylinder but also the degree of layout freedom in the vicinity of the support portion of the swing arm can be increased.
[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 is a perspective view of a swing arm support portion as viewed from the rear of the vehicle body, showing an embodiment of the present invention.
FIG. 3 shows an embodiment of the present invention, showing the handling of a brake hose around the vehicle body frame, and is a perspective view of the vehicle body frame as viewed from the rear of the vehicle body.
FIG. 4 is a perspective view showing an embodiment of the present invention, showing a state in which a brake master cylinder is attached, as viewed from the front of the vehicle body.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 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 Connector A Bearing

Claims (1)

Brake hose piping in a vehicle having a swing arm in which a brake master cylinder mounted on a vehicle body frame and a brake caliper mounted on a swing arm supported so as to swing on the vehicle body frame are connected by a brake hose. The brake hose is passed from the brake master cylinder along the vehicle body frame to the support portion of the swing arm, and then a coupler is provided at a substantially central position of the support portion , from which the brake hose is provided. A portion located between the coupling portion and at least a portion of the brake hose along the swing arm, and a portion located along the swing arm along the swing arm. It is made of a flexible material, Brake hose piping structure in a vehicle provided with a swing arm, characterized in that smoothly permit swinging of the swing arm by twisting the brake hose during extending near the outside.

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