JPH0139657Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a reservoir tank that stores brake fluid to be supplied to a master cylinder.

As a conventional reservoir tank, there is one shown in FIG. 1, for example.

In Fig. 1, 1 is the tank body, and a saucer 3 is attached to the top of a partition plate 2 formed inside, and as is clear from the plan view of Fig. 2, the brake fluid is mixed into the gap in the saucer 3. A net 4 is set up to remove the trash.

A cap 5 is screwed into the opening of the tank body 1, and the cap 5 is connected to an outer cover 6 and an inner cover 7.
A disc-shaped wave-absorbing plate 8 is integrally formed at the bottom of the lower lid 7, and inside the tank there is a through hole 9 provided in the inner lid 7 and a flange at the upper left corner of the inner lid 7. It is electrically connected to the atmosphere through a notch 10 formed in the.

By the way, the wave-dissipating plate 8 formed on the inner lid 7 of the cap 5 is designed to prevent brake fluid from splashing onto the bottom surface of the inner lid 7 due to the undulation of the tank liquid level while the vehicle is running, blocking the through hole 9 and causing damage inside the cap 5. This is provided to prevent infiltration and leakage to the outside.

However, in the case of such a conventional wave-dissipating plate, when brake fluid adheres to the gap between the wave-dissipating plate 8 and the inner cover 7, the brake fluid permeates to the base of the through-hole 9 due to capillary action. state,
There was a problem in that the through hole 9 was blocked and liquid leaked into the cap 5.

The present invention was developed in view of these conventional problems, and is a master master that prevents the ventilation holes from closing and from leaking into the cap even if brake fluid adheres to the wave-dissipating plate. The purpose of the present invention is to provide a reservoir tank for cylinders.

In order to achieve this objective, the present invention has a structure in which a disc-shaped wave-dissipating plate formed integrally with the lower cap lid has a plurality of slits or through holes, so that even if brake fluid adheres to the wave-dissipating plate, it will disappear. Brake fluid adhering to the corrugated plate can be easily removed through slits or through holes formed in the corrugated plate.

Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 3 is a sectional view showing an embodiment of the inner lid integrally equipped with a wave-dissipating plate used in the reservoir tank of the present invention, and FIG. 4 is a bottom view thereof.

First, to explain the structure, the inner lid 7 has a dish-like cross-sectional shape with a flange 7a extending on the upper part.
There is a notch 10 on the upper left side of the
A disk-shaped wave-absorbing plate 8 is integrally formed at the bottom of the inner lid 7, and a tank 7 is formed inside the cap near the base of the gap formed between the wave-absorbing plate 8 and the inner lid 7. A through hole 9 communicating with is formed. Third
As is clear from FIG. 4, the wave-dissipating plate 8 used in the reservoir tank of the present invention shown in the figure has slits 12 cut out from four places on the outer periphery toward the center, and the slits 12 are indicated by broken lines. It is formed at a position where the through hole 9 shown is removed.

Next, to explain the action of the wave-dissipating plate 8 shown in FIGS. 3 and 4, the ripples of the brake fluid stored in the reservoir tank cause the brake fluid to adhere to the wave-dissipating plate 8 formed integrally at the bottom of the inner lid 7. , the brake fluid also comes to adhere to the gap between the wave-absorbing plate 8 and the inner cover 7.

However, since the wave-dissipating plate 8 has slits 12 formed at four locations as shown in FIG.
This prevents brake fluid from penetrating into the tank through the holes 2 and adhering to the vicinity of the base of the wave-dissipating plate 8 where the through holes 9 are open.

Therefore, even if brake fluid adheres to the wave-dissipating plate 8, the through hole 9 will not be blocked, and the brake fluid adhered to the inside of the cap will not leak out. Since the slit 12 is formed by removing it, brake fluid does not directly adhere to the through hole 9. Furthermore, since the slit 2 has a wall perpendicular to the liquid surface, it effectively suppresses ripples caused by horizontal shaking.

FIG. 5 is a bottom view showing another embodiment of the wave-dissipating plate 8 used in the reservoir tank of the present invention. Instead of slits, a plurality of slits 14 are formed in the wave-dissipating plate 8 to form independent openings, and the slits 14 are formed through the through holes 9.
In order to prevent brake fluid from directly adhering to the opening of the through hole 9, the through hole 9 is formed radially outside the opening of the through hole 9 as shown in the figure.

FIG. 6 is a bottom view showing another embodiment of the wave-dissipating plate used in the reservoir tank of the present invention, and this embodiment is characterized in that the wave-dissipating plate 8 is provided with a plurality of through holes 16. Of course, a plurality of through holes 16 are provided at positions other than the portion of the wave-absorbing plate 8 facing the through holes 9.
I am trying to set it up.

As explained above, in the reservoir tank of the present invention, a plurality of slits or through holes are formed in the wave-dissipating plate that is formed integrally with the inner lid of the cap, so that the brake fluid does not leak into the wave-dissipating plate. Even if the brake fluid adheres to the brake fluid, it may escape into the tank through the slits or through holes, and the ventilation hole opened in the gap between the wave-dissipating plate and the inner cover may be blocked by the brake fluid. An effect can be obtained in that brake fluid can be reliably prevented from leaking into the cap through this through hole.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an example of a conventional reservoir tank, Fig. 2 is a plan view of Fig. 1, Fig. 3 is a sectional view showing an embodiment of the inner cap used in the present invention, and Fig. 4 This figure is a bottom view of FIG. 3, and FIGS. 5 and 6 are bottom views of the inner lid of the cap showing other embodiments of the wave-dissipating plate. 1: Tank body, 12: Partition plate, 3: Saucer, 4: Net, 5: Cap, 6: Outer lid, 7: Inner lid, 8: Wave dissipating plate, 9: Through hole, 10: Notch, 1
2, 14: slit, 16: through hole.

Claims (1)

[Scope of Claim for Utility Model Registration] In a master cylinder reservoir tank that stores brake fluid to be supplied to the master cylinder, the reservoir tank is formed integrally with the inner lid of the cap, which closes the tank opening and has a through hole communicating with the tank. 1. A reservoir tank for a master cylinder, characterized in that a plurality of liquid draining slits or through holes are bored at positions outside the through holes of the wave dissipating plate.