JP3091970B2 - Motorcycle brake hose arrangement - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brake hose arrangement structure for a scooter-type motorcycle, and more particularly, to a scooter-type motorcycle having a rear wheel disc brake device for braking with brake fluid pressure. It relates to a brake hose arrangement structure.

[Prior art] For example, in a scooter type motorcycle, a unit swing engine supporting a rear wheel is provided on a body frame,
Some unit engines support a rear fender that covers the upper part of the rear wheel.

In such a scooter type motorcycle, the front wheels are normally braked by a hydraulic disc brake device, but the rear wheels are braked by a mechanical drum brake device.

[Problems to be Solved by the Invention] By the way, if braking of the rear wheels is also performed by a hydraulic disc brake device, the caliper of the rear wheel disc brake device is supported by the unit swing engine. For this reason, the brake hose that supplies brake fluid pressure to the caliper of the rear wheel disc brake device must be arranged so that it is not affected by heat from the engine and muffler, or that it is not hit by obstacles such as pebbles. There is.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above circumstances, and has as its object to provide a brake hose arrangement structure for a scooter-type motorcycle that reduces the influence of heat on a brake hose and prevents interference with foreign matters such as pebbles. .

[Means for Solving the Problems] In order to solve the above problems, a brake hose arrangement structure for a scooter-type motorcycle according to the present invention includes a rising portion that rises upward from a rear side of a floor, and an upper end of the rising portion. A unit swing engine having a rear extending portion that bends and extends rearward is provided, and a unit swing engine that supports a rear wheel at a rear portion is disposed below and behind the rear frame. In a scooter-type motorcycle in which a rear extending portion is supported via a support shaft on a rearward extending portion of the unit swing engine and a rear fender that covers the rear wheel above the rear wheel, a rear portion of the unit swing engine, The fixed brake disc and brake fluid pressure generated by operating the rear wheel brake lever are supplied via a brake hose. A rear wheel disc brake device comprising a caliper that brakes the brake disc by the brake fluid pressure is disposed, and the brake hose is raised from the rear side of the floor along the rear frame, and the vicinity of the support shaft is provided. Through the rear fender, and further connected to the caliper along the rear fender.

[Operation] In the present invention, the brake hose that supplies the brake fluid pressure to the caliper of the rear wheel disc brake device rises upward along the rear frame in front of the unit swing engine and passes near the support shaft of the unit swing engine. Guided to the upper part of the rear fender, it is connected to the caliper of the rear wheel disc brake device along the rear fender, and the brake hose is located away from the unit swing engine and muffler. Receiving is reduced.

In addition, the arrangement of the brake hose is higher than the unit swing engine, so that it is possible to prevent obstacles such as pebbles from hitting the brake hose during traveling.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a side view of a scooter-type motorcycle to which the present invention is applied, FIG. 2 is a plan view thereof, and FIG. 3 is a sectional view taken along the line III-III of FIG.

In the figure, reference numeral 1 denotes a body frame, a steering shaft 3 is provided on a head pipe 2, and a front fork 4 is provided below the steering shaft 3 via a bracket 5. A front wheel 7 is supported on a lower portion of the front fork 4 via a front axle 6, and a handle 8 is mounted on an upper portion of the steering shaft 3. The handle portion is covered with a handle cover 9.

A main frame 10 is connected to the head pipe 2, and the main frame 10 extends obliquely rearward and downward so as to form a floor, and further bends and extends horizontally rearward. A front cover 11 covers from the head pipe 2 to the front central portion of the main frame 10.

A pair of left and right front floor pipes 12 are provided on the front side of the horizontal portion of the main frame 10 in the vehicle width direction, and a rear floor pipe 13 is provided on the rear side of the horizontal portion in the vehicle width direction. A pair of left and right floor frames 14 are connected to the ends of the pair 13, respectively. In addition, the mainframe
The rear frame 15 is connected to the rear frame 15.
Is composed of a rising portion that rises upward from the rear side of the floor portion, and a rear extending portion that bends from the upper end of the rising portion and extends rearward.

The rear frame 15 is covered with a rear cover 16 from the floor of the main frame 10, and a seat 17 is attached to the rear cover 16. The rear cover is located below the seat 17.
A helmet storage box 18 is provided in 16 and a seat 17
The helmet is taken out by opening and closing.

A bracket 19 is provided on the rear extension of the rear frame 15, and the unit swing engine 20
Is supported at the upper front side via a support shaft 21. A wheel 24 of a rear wheel 23 is supported on a rear axle 22 of the unit swing engine 20. The rear end of the axle 22 is rotatably supported by a support bracket 26 fixed to the unit swing engine 20 with bolts 25.
Is supported on the right side of the rear frame 15 via a rear cushion 27. The front side of the rear fender 28 is supported by the support bracket 26 via a stay 29, and the rear side is supported by a stay 30. In addition, the unit swing engine
A muffler 32 is connected to the 20 exhaust pipes 31, and this muffler 32 is arranged on the side of the support bracket 26.

The scooter-type motorcycle is provided with a front wheel brake system and a rear wheel brake system that can be operated independently of each other by braking with hydraulic pressure of brake fluid.

The master cylinder 50 for the front wheel brake system is the main frame
The master cylinder 50 is attached to an upper portion of the vehicle 10 and is connected to a front wheel brake lever 51 by a wire 52. A reservoir tank 54 is connected to the master cylinder 50 via a hose 53. The reservoir tank 54 is attached to the head pipe 2 and the main frame 10 at a position above the master cylinder 50.

The reservoir tank 54 is formed vertically long to secure a volume, and the reservoir tank 54 is arranged in substantially the same direction as the head pipe 2, and is disposed by effectively utilizing the space around the head pipe 2. At the rear side of the front cover 11, a check lid 55 for checking the level of the brake fluid is provided at a position corresponding to the reservoir tank 54 so as to be openable and closable. This inspection lid
By opening 55, the fluid level of the brake fluid in reservoir tank 54 is checked, and the brake fluid is supplied to reservoir tank 54.

By operating the front wheel brake lever 51, brake fluid pressure is supplied from the master cylinder 50 to the caliper 58 of the disk brake device 57 of the front wheel 7 via the brake hose 56. The brake hose 56 extends downward from the head pipe 2 along the front fork 4 and is supported by the front fork 4 with a band 59. The caliper 58 is supported by a bracket 60 fixed to the front fork 4 and straddles the outer peripheral portion of a brake disc 61 that rotates integrally with the front wheel 7, and brakes the pad 62 by sliding the pad 62 against the brake disc 61. The caliper 58 is provided with an air bleed 63 for bleeding air from the front wheel brake system.

The master cylinder 70 of the rear wheel brake system is mounted on the floor frame 14 and is arranged by utilizing the space of the floor. The master cylinder 70 is directly operated by a rear wheel foot brake lever 71, and the rear wheel foot brake lever 71 is rotatably supported by a support shaft 72 attached to a floor portion of the main frame 10. . This master cylinder 70 has a reservoir tank via a hose 73.
The mounting portion 74a of the reservoir tank 74 is fixed to the boss portion 15a of the rear frame 15 with a bolt 75. The reservoir tank 74 is formed in a vertically long shape to secure a volume, and the reservoir tank 74 is disposed in substantially the same direction as the rising portion of the rear frame 15, and is disposed by effectively utilizing a space around the rising portion. An inspection cover 76 for inspecting the level of the brake fluid is provided on the rear cover 16 at a position corresponding to the reservoir tank 74 so as to be openable and closable. This inspection lid 76
Is opened, the level of the brake fluid in the reservoir tank 74 is checked, and the supply of the brake fluid to the reservoir tank 74 is performed.

By operating the rear wheel brake lever 71, the brake fluid pressure is applied from the master cylinder 70 to the rear wheel via the brake hose 80.
It is supplied to the caliper 82 of the disc brake device 81 of 23. The caliper 82 is supported by a bracket 83 fixed to the support bracket 26, straddles the outer periphery of a brake disc 84 fixed to the wheel 24 of the rear wheel 23, and brakes the pad 85 by sliding the pad 85 against the brake disc 84. .

The brake hose 80 extends rearward and upward from the master cylinder 70 along the right side of the rear frame 15 constituting the vehicle body frame 1.
Installed on 15. The brake hose 80 is connected to the support shaft 21 located behind the front upper portion of the unit swing engine 20.
From the vicinity, it extends upward in front of the rear fender 28, and further along the rear fender 28, the rear and the muffler 32
To the side 28a in a direction away from the side. Further, the rear fender 28 is connected to the caliper 84 through the inside of the rear fender 28 from a substantially central side portion 28a.

The brake hose 80 is engaged with and retained by a lock 28b formed on the outer surface of the rear fender 28, and is also retained by being engaged with a lock portion 28c formed on the inner surface of the rear fender 28.
It does not come off.

As described above, since the brake hose 80 is disposed at a position above the unit swing engine 20 and at a position away from the muffler 32 above the rear fender 28, the influence of heat of the engine and the muffler is reduced. Receiving is reduced.

Also, the position of the brake hose 80 is higher than the unit swing engine 20, and the rear fender
Since it is connected to the caliper 82 through the upper side of 28, obstacles such as pebbles are prevented from hitting the brake hose 80 during traveling.

The brake hose 80 is provided with an air bleed 87 for bleeding air from the rear wheel brake system.

4 and 5 show another embodiment. FIG. 4 is a side view of a scooter type motorcycle, and FIG. 5 is a plan view thereof.

In this embodiment, the mounting structure of the reservoir tank 74 is the first type.
The configuration is the same as that of the embodiment shown in FIGS.

In this embodiment, a bracket 90 is fixed to the top of the rising portion on the right side of the rear frame 15, and the mounting portion 74b of the reservoir tank 74 is fastened and fixed to the bracket 90 with bolts 91, and is formed around the helmet storage box 18. Space is used effectively.

[Effects of the Invention] As described above, the brake hose arrangement structure of the scooter type motorcycle of the present invention has a brake hose that supplies brake fluid pressure to a caliper of a rear wheel disc brake device,
Standing upward along the rear frame in front of the unit swing engine, guided near the support shaft of the unit swing engine to the upper part of the rear fender, and further connected to the caliper of the rear wheel disc brake device along the rear fender As a result, the brake hose is located at a position distant from the unit swing engine and the muffler, and is less affected by the heat of the engine and the muffler.

In addition, the arrangement of the brake hose is higher than the unit swing engine, so that it is possible to prevent obstacles such as pebbles from hitting the brake hose during traveling.

[Brief description of the drawings]

FIG. 1 is a side view of a scooter type motorcycle to which the present invention is applied, FIG. 2 is a plan view thereof, FIG. 3 is a sectional view taken along the line III-III of FIG. 1, FIG. 4 and FIG. Shows another embodiment, FIG. 4 is a side view of a scooter type motorcycle, and FIG.
The figure is a plan view thereof. In the drawing, reference numeral 1 is a body frame, 10 is a main frame, 15 is a rear frame, 20 is a unit swing engine, 23 is a rear wheel, 28 is a rear fender, 70 is a master cylinder, 80 is a brake hose, 81
Is a disc brake device.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-16893 (JP, A) JP-A-64-16482 (JP, A) JP-A-63-291787 (JP, A) 6585 (JP, U) JP-A 1-76389 (JP, U) JP-A 63-4975 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B62L 3/00 B60L 3 / 04

Claims (1)

(57) [Claims] 1. A rear frame comprising a rising portion rising upward from a rear side of a floor, and a rear extending portion bent from an upper end of the rising portion and extending rearward. A unit swing engine supporting the rear wheels is disposed, and a front upper portion of the unit swing engine is pivotally supported on a rear extending portion of the rear frame via a support shaft. In a scooter-type motorcycle supporting a rear fender to be covered, a brake disc fixed to the rear wheel and brake fluid pressure generated by operating a rear wheel brake lever are supplied to a rear portion of the unit swing engine via a brake hose. A rear disc brake comprising a caliper for braking the brake disc with the brake fluid pressure Arranging a device, raising the brake hose from the rear side of the floor along the rear frame, guiding the brake hose to the upper part of the rear fender through the vicinity of the support shaft, and further connecting the caliper along the rear fender. The brake hose arrangement structure of a scooter type motorcycle characterized by the following.