JPS5827870Y2 - Master cylinder reservoir - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a brake mask cylinder glue server suitable for off-road vehicles.

In off-road vehicles, such as buggies and off-road motorcycles, the vehicle often falls and the mask cylinder glue server becomes upside down or tilted significantly.

The purpose of this invention is to provide a mask cylinder glue server that can prevent air from being trapped when the brakes are operated while the vehicle is in an overturned state, no matter what state the vehicle is in. be.

An embodiment of the present invention will be described below with reference to the drawings.

This embodiment is for a motorcycle.

FIG. 1 shows the state with the beam server cap 1 removed, and the reservoir 2 is molded integrally with the mask cylinder body 3.

Further, a flake lever attachment part 4 is integrally molded on the mask cylinder body 3, and a brake lever 5 is rotatably attached to a bolt 6 and a nut. It comes into contact with the piston inside the mask cylinder body 3.

The mask cylinder body 3 is fixed to a handlebar (not shown) of a motorcycle with a lever holder 7 and a bolt 8.

The inside of the reservoir 2 communicates with a hydraulic chamber 11 in the mask cylinder body 3 via a relief port 9 and a supply port 10.

The relief port 9 and the supply port 10 correspond to the working fluid supply port of the present invention.

An annular flange 12 is provided integrally with the reservoir 2 at a position surrounding the relief port 9 and the supply port 10.

The inner part of the annular flange 12 forms an auxiliary reservoir 13 .

A protrusion 14 is provided on the outer peripheral wall of the annular flange 12 .

The proximal end of the rubber tube 15 is fitted into the annular flange 12, and is brought into close contact with the protrusion 14 to prevent it from coming out.

The rubber tube 15 extends from a large diameter portion 15a that fits into the annular flange 12 and a small diameter portion 15b beyond it, and is flexible in all directions.

A weight portion is formed by attaching a weight 16 to the tip of the small diameter portion 15b.

The weight 16 is used to bend the rubber tube 15 downward to an extent that does not crush the small diameter portion 15b.

Note that the diameter of the small diameter portion 15b of the rubber tube 15 is set to a size that does not impede the flow of the working fluid.

In FIG. 2, 11 is a diaphragm, 18 is a bolt for fixing the server cap 1 to the reservoir 2, 19 is a piston, and 20 is a piston cup.

If the car tilts and my father falls, no matter what direction the reservoir 2 is tilted or even if it is upside down, the rubber tube 1
5 is bent downward by the weight 16 or extends downward as shown by the two-dot chain line in FIG. It becomes immersed inside.

Therefore, the air in the reservoir 2 will not enter through the rubber tube 15, and even if a brake operation is performed while the vehicle is falling over, air will not be trapped.

In the normal state, the rubber tube 15 is always bent by the weight 16, so the hydraulic fluid flows through the relief port 1 until the relief port 10 closes at the beginning of brake operation.
A violent squirt from 0 into the reservoir 2 causes the working fluid to squirt towards the bottom of the reservoir 2, thus causing the
By stirring the working liquid inside the pump, it is possible to prevent air bubbles from entering the working liquid.

In the illustrated embodiment, the present invention is applied to a side port type mask cylinder equipped with an IJ port 9 and a supply port 10 as working liquid supply ports.
The present invention can also be applied to a center port type mask cylinder.

Further, the present invention can be applied not only to a type in which the reservoir and the hydraulic pressure chamber of the mask cylinder communicate directly through a side port or a center port, but also to a type in which the reservoir and the hydraulic pressure chamber of the mask cylinder are connected through a hydraulic passage or a pipe.

Furthermore, although a rubber tube 15 is used in the illustrated embodiment, tubes made of other materials may be used as long as they are flexible in all directions and are oil resistant.

Furthermore, a weight portion is formed by attaching a weight 16 that is separate from the rubber tube 15.
It is also possible to form the weight portion by increasing the wall thickness at the tip of a tube made of 5 or other materials.

In the present invention, an annular flange is provided integrally with the reservoir at a position surrounding the working fluid supply port to the hydraulic pressure chamber of the mask cylinder, and the proximal end of a tube that is flexible in all directions is attached to the annular flange. A weight part is formed at the tip of the tube to direct the tip of the tube downward, so no matter how the vehicle falls over, the opening at the tip of the tube is always immersed in the working fluid. This makes it possible to prevent air from being trapped when the brakes are operated while the vehicle is falling over.

In addition, since the tube is bent downward by the weight part in the normal state, it is possible to prevent air bubbles from being mixed in due to the jetting of the working fluid from the relief port at the beginning of the brake operation.

[Brief explanation of drawings]

Fig. 1 is a plan view of an embodiment of the present invention with the reservoir cap removed, Fig. 2 is a sectional view taken along line AA in Fig. 1, and Fig. 3 is an embodiment of the present invention. FIG. 3 is an enlarged sectional view of a rubber tube. 2...Reservoir, 3...Mask cylinder body, 9...
... Relief port, 10 ... Supply port, 11
... Hydraulic pressure chamber, 12 ... Annular flange, 15 ... Rubber tube, 16 ... Weight.

Claims (1)

[Scope of utility model registration request] In a mask cylinder glue server equipped with a working fluid supply port connected to the hydraulic pressure chamber of the mask cylinder, an annular flange is provided integrally with the reservoir at a position surrounding the working fluid supply port, and the annular flange has a movable part that can be moved in all directions. A mask cylinder glue server, characterized in that the proximal end of a flexible tube is brought into close contact with the base end, and a weight part is formed at the tip of the tube to direct the tip of the tube downward.