JPS6238432Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reservoir of a master cylinder, and particularly to a location where a mark is formed to indicate the residual level of hydraulic fluid in the reservoir.

Conventionally, the reservoir R of the master cylinder is provided on the upper side of the master cylinder 1 as shown in FIG. A viewing window 3 is provided for viewing the internal hydraulic oil level, and a side wall near the viewing window 3 indicates whether the fluid level is at the hydraulic oil replenishment position or not. A mark portion 6 consisting of an indication line 4 and a symbol 5 is formed for the purpose. The viewing window 3 is comprised of a transparent face plate 8 fitted into a hole 7 formed in the side wall 2, as shown in FIG. Above hole 7
is set so that its diameter gradually increases in the outward direction, and has a medium hole 7a and a large hole 7b, and a ring body 9 protruding from the face plate 8 on the inner wall side of the medium hole 7a holds an O-ring 10. Further, the outer circumferential side of the face plate 8 is fitted into the inner wall side of the large hole 7b, and this outer circumferential side is pressed and fixed by a ring-shaped holding frame 11. A reflecting plate 13 having a slit 13a is provided between the tip of the ring body 9 and the stepped portion 12 provided on the inner wall side of the hole 7.
Hydraulic oil enters the space 14 side of ring body 9 through a, and the liquid level of the hydraulic oil can be made clear by the reflected light from reflection plate 13. That is, by providing the reflecting plate 13, the liquid level is reflected on the reflecting plate 13 side, and the contrast of the liquid level becomes large, so that the liquid level becomes clear.

However, according to the conventional reservoir, the landmark part 6
The liquid level reflected on the reflecting plate 13 and the mark indicating this liquid level because the reflecting plate 13 is displaced by a distance l toward the inside of the reservoir R with respect to the surface of the side wall 2 where 6 will be displaced in the front-rear direction, and therefore, if a rider who is driving this part looks down diagonally from a slightly upper side, he or she will actually see that the extension line P of the mark part 6 is and the liquid level S match, and even though hydraulic oil replenishment is required, the liquid level is slightly above the extension line P of the marking part 6, that is, the allowable lowest position of the hydraulic oil, as shown in Fig. 1. It had the disadvantage that it appeared that there were levels, making it easy to mistake when to replenish supplies.

The purpose of the present invention is to eliminate the above-mentioned drawbacks by making the position of the mark formed on the side wall side of the surface of the reservoir substantially coincide with the position of the reflection plate in front-to-back relation, thereby avoiding the above-mentioned misjudgment. This will be explained in detail below using examples.

FIG. 3 is a sectional view showing an embodiment of the reservoir of the master cylinder according to the present invention, and the same parts as in FIG. 2 are designated by the same reference numerals. In the figure, a hole 7 is provided in the side wall 2 constituting the reservoir R, and the side wall 2a corresponding to the outer periphery of the hole 7 protrudes toward the outside of the reservoir R to form a protrusion 2b. The protrusion amount m of the protrusion 2b is set such that the attachment position of the reflection plate 13 attached to the hole 7 side and the surface 20 on which the mark portion 6 of the side wall 2 is formed correspond in a front-to-back relationship.

In other words, by matching the front and back relationship between the surface 20 of the side wall 2 on which the mark portion 6 is formed and the reflecting plate 13, in other words, the side wall surface of the reservoir and the surface of the reflecting plate are made substantially flush with each other. By locating the reflector, even when the rider looks down diagonally from the upper side while driving to view the viewing window 3 and its vicinity, the marker extension line and the reflector 13 can be easily seen.
The hydraulic oil level reflected in the image will match exactly, and therefore the hydraulic oil level can be detected accurately.

In the present invention, the side wall 2a corresponding to the outer circumferential side of the hole 7 that holds the reflector 13 is projected forward by m to make the reflector 13 and the surface 20 of the side wall 2 coincide with each other. However, the present invention is not limited to this. For example, the surface side of the side wall including the mark 6 shown by the broken line 21 in FIG. 1 may be recessed toward the inside of the reservoir so that the two coincide.

[Brief explanation of drawings]

1 and 2 are a side view and a sectional view showing an example of a conventional master cylinder reservoir, and FIG. 3 is a sectional view showing an embodiment of a master cylinder reservoir according to the present invention. 1... Master cylinder, 2... Side wall, 3... Peephole, 6... Marker, 7... Hole, 8... Face plate, 1
0...O-ring, 13...Reflector.

Claims (1)

[Claims for Utility Model Registration] (1) A transparent face plate attached to cover a hole formed in the side wall of the reservoir from the outside, and a reflector attached to the hole so as to face the inner side of the face plate. In a master cylinder reservoir comprising a plate and a mark section formed on the surface of the side wall of the reservoir near the face plate and indicating the residual level,
A reservoir for a master cylinder, characterized in that a reflecting plate is positioned so that a side wall surface of the reservoir on which the mark portion is formed and a surface of the reflecting plate are substantially flush with each other. (2) The master cylinder reservoir according to claim 1 of the Utility Model Registration Claim, wherein the side wall corresponding to the outer periphery of the hole to which the reflector and face plate are attached projects toward the outside of the reservoir. (3) The master cylinder according to claim 1 of the utility model registration claim, in which the side wall surface of the reservoir, on which a mark for indicating the residual level reflected on the reflector is formed, is recessed toward the inside of the reservoir. reservoir.