JPS5911088Y2 - Level finder for liquid containers - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a level finder that indicates the liquid level in a reservoir of a mask cylinder for an automobile brake system, a fuel tank for a vehicle, or other liquid containers.

In mask cylinder reservoirs, the liquid level inside the reservoir is required to be visible from the outside, so the reservoir is made of transparent or translucent synthetic resin, and this reservoir is made of metal. Although it has been attempted to attach the reservoir to the mask cylinder, it is difficult to completely form the joint between the reservoir and the mask cylinder at low cost.

Therefore, the reservoir is cast integrally with the mask cylinder, and a transparent or translucent level finder is installed in the reservoir so that the liquid level can be directly seen through this finder, or a float that follows the liquid level can be seen. However, if the liquid level is above the top edge of the finder or below the bottom edge of the finder, the liquid level may be above the top edge of the finder or below the bottom edge because the inside of the reservoir is dark. I couldn't tell if it was below.

On the other hand, the level finder is required to be as small as possible in terms of cost and reservoir strength.

An object of the present invention is to provide a level finder for a liquid container that can accurately indicate whether the liquid level is above or below the level finder and can be made compact.

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

This embodiment is an example in which the present invention is applied to a reservoir 1 of a mask cylinder for a motorcycle braking device.

The reservoir 1 consists of a reservoir body 2 and a cap 3. The reservoir body 2 is cast integrally with the mask cylinder body 4 from aluminum or cast iron, and the cap 3 covers the upper opening of the reservoir body 2.

The cap 3 is made of metal or plastic.

The cap 3 is removably attached to the reservoir body 2 with screws.

A diaphragm 5 is provided at the upper part of the inside of the reservoir body 2 to prevent rainwater, moisture, and dust from entering the working liquid within the reservoir body 2.

The space above the diaphragm 5 communicates with the outside air through the vent hole 6 of the cap 3.

The mask cylinder body 4 is provided with a cylinder hole 7 in which a piston or the like is accommodated, and the cylinder hole 7 communicates with the inside of the reservoir body 2 through a liquid passage 8.

9 is a mounting flange fixed to the handlebar of the motorcycle.

A level finder 10 made of a transparent or translucent material such as a transparent resin is attached to the side wall of the reservoir body 2.

That is, the cylindrical attachment part 12 of the level finder 10 is fitted into the attachment hole 11 provided on the side wall of the reservoir body 2, and after being fitted, the retaining ring 13 shown in FIG. 1 is press-fitted inside the attachment part 12. As a result, the diameter of the attachment portion 12 is slightly expanded, thereby preventing the attachment portion 12 from coming off.

However, the attachment means is not limited to this.

The outer surface of the level finder 10 has a recessed F-shaped mark 14 as shown in FIG. 3, and the inner surface has a raised E-shaped mark 15 as shown in FIG.

The F-shaped mark 14 may be convex, and the E-shaped mark 15 may be concave.

It is desirable that the F-shaped mark 14 and the E-shaped mark 15 are in an overlapping position.

In FIG. 2, reference numeral 16 indicates a portion into which the retaining ring 13 is press-fitted.

Level finder 1 indicates the level of working fluid in reservoir 1.
If it is above 0, the external level finder 1
Since the refractive index of the working liquid and the refractive index of the level finder 10 are not much different, the light passing through the point 0 is hardly reflected at the interface between the level finder 10 and the working liquid, and therefore the E-mark 15 is I can hardly see it.

Therefore, only the F-shaped mark 14 is visible from the outside, indicating that the working fluid is in a FULL state.

While the liquid level of the working liquid crosses the level finder 10, the liquid level can be seen through the level finder 10.

If the liquid level is below the level finder 10,
Since the refractive index of the air in the reservoir 1 and the refractive index of the level finder 10 are significantly different, a portion of the incident light is reflected at the interface between the level finder 10 and the air and exits from the level finder 10. come.

The inside of the reservoir 1 is dark, and the light reflected from the boundary surface comes out from the level finder 10, so the E-mark 15 is clearly visible.

The E-shaped mark 15 overlaps the F-shaped mark 14, and when viewed from the outside, it looks like the letter E, indicating that it is in an EMPTY state.

Even if the E-mark 15 is slightly misaligned with the F-mark 14,
EMPTY because the E-mark 15 is clearly visible.
As can be seen, it is not necessary that the E-shaped mark 15 overlaps the F-shaped mark 14.

In the illustrated embodiment, a recess 17 is provided at the bottom of the reservoir body 2, and the liquid passage 8 is bored by passing a drilling tool through the mounting hole 11 of the level finder 10 facing the recess 17. .

Therefore, the lower limit liquid level of the working liquid inside the reservoir 1 can be set to a much lower level.

In the present invention, a raised or recessed F-shaped mark is formed on the outer surface of a transparent or translucent level finder, and a raised or recessed E-shaped mark is formed on the inner surface to determine the liquid level. When the liquid level is above the level finder, the E mark is not visible and only the F mark is visible, and when the liquid level is below the level finder, both the F mark and the E mark are visible. Therefore, even if the liquid level is above or below the level finder, it can be accurately indicated.

In addition, the F-shaped mark and E-shaped mark on the outer and inner surfaces are easy to see, so even if the product is small, the marks will not be misunderstood.

Therefore, it can be made small.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is an internal view thereof, and FIG. 3 is an external view thereof. 1...Reservoir, 10...Level finder, 14...F-mark, 15...
・E-mark.

Claims (1)

[Scope of utility model registration request] A level finder for a liquid container that is formed of a transparent or translucent material and is attached to the side wall of a liquid container, and has a raised or recessed F-mark on the outer surface and a raised or recessed mark on the inner surface. A level finder for liquid containers characterized by an E-shaped mark.