JPH0326619Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid spout plug having an exhaust port that is provided at a liquid filling port of a storage battery, and particularly to a liquid spout plug for a storage battery for an automobile or an electric vehicle.

Liquid port plugs that have an exhaust port on the top wall to exhaust gas generated from inside the storage battery when in use are equipped with a splash-proof plate inside the liquid port plug to prevent the electrolyte from scattering. There is. Conventionally, as the splash-proof plate for these liquid spout plugs, a plate-shaped splash-proof plate having a notch, a spiral-shaped splash-proof plate wound in a spiral shape, etc. are known.

However, these conventional liquid spout plugs with splash-proof plates cannot be said to be completely effective in preventing electrolyte from overflowing due to vibrations, and electrolyte sometimes leaks from the liquid spout plugs of storage batteries installed in automobiles and other vehicles that experience a wide variety of vibrations. In some cases, problems such as leakage occurred.

The present invention was devised to eliminate these conventional drawbacks, and aims to provide a liquid spout plug that does not overflow even with any vibrations of the vehicle body that occur during normal use of automobiles. The bottom of the opening of a hollow cylindrical body is sealed with a splash-proof plate having an inclined upper surface, and the inside of the hollow cylindrical body is arranged radially and the lower end is separated from the inclined upper surface of the splash-proof plate with a slight gap. In addition to forming multiple compartments with partition walls,
A notch is formed in one of the compartments, an exhaust hole is formed in the top wall of one of the adjacent compartments, and a communication hole is provided in the compartment wall other than the partition wall between the two compartments to communicate each compartment. It is characterized by:

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.

Reference numeral 1 denotes a liquid port stopper, and as shown in FIG. 1, a cylindrical hollow body 2 and a circular top wall 3 having a diameter larger than that of the hollow body 2 are integrally formed. As shown in the second figure, the hollow cylindrical body 2 has a splash-proof plate 5 having an inclined upper surface 5a on its open bottom surface 4, and a concave groove 6 formed on the circumferential surface of the hollow cylindrical body.
The splash-proof plate is attached by fitting a convex portion 7 formed on the outer circumferential surface of the plate to seal the bottom surface 4 of the hollow cylinder body 2. The inclination angle θ of the inclined upper surface 5a is
It was set at 30 degrees. The larger the inclination angle θ, the better, but if it is too large, the liquid spout 1 will also become large, so it is preferably 20 to 30 degrees.

Further, inside the hollow cylinder 2, three partition walls 8 are provided radially from the center of the hollow cylinder to the inner surface of the cylinder, and the inside of the hollow cylinder is divided into three compartments 9 as shown in the third figure. ing. The lower end of the partition wall 8 is inclined along the inclined upper surface 5a of the splash-proof plate 5 with a slight gap t.

One of the compartments 9, that is, the lowest part of the first chamber 9a where the lowest part of the inclined upper surface 5a of the splash-proof plate 5 is located, has a slit-like shape extending vertically in the hollow cylinder 2 and opening at the bottom end of the cylinder. A notch 10 is provided, and a circular exhaust port 11 is provided in the top wall 3 of one of the two adjacent compartments 9b adjacent to the first chamber 9a, and the first chamber 9a is provided with the notch 10. A slit-shaped communication hole 12 extending from the lower end to approximately the center is formed on the inner surface of the hollow cylinder of the partition walls 8, 8 other than the partition wall 8a between the two partitions of the adjacent chamber 9b where the exhaust port 11 is provided. communicated. In the figure, 13 is a threaded portion, 14 is a coin groove, and 15 is a tongue piece provided on the splash-proof plate.

The liquid inlet stopper 1 formed in this way has a threaded portion 1 provided on the outer surface of the hollow cylindrical body at the inlet of a storage battery (not shown).
3 are screwed together to seal the liquid injection port,
Gas generated within the storage battery enters the hollow cylinder 2 through the notch 10, passes through the communication hole 12, goes around the cylinder, and then evaporates through the exhaust port 11 provided on the top wall 3 and communicating with the outside air. However, the electrolytic solution that has entered the cylinder together with the gas is completely removed on the way, and the removed electrolytic solution descends onto the sloped upper surface 5a of the bottom splash-proof plate 5 and passes through the gap t to the storage battery from the notch 10. Reflux into the inside. Furthermore, the electrolytic solution that has entered the hollow cylinder due to the vibrations is similarly blocked by the partition wall 8 and does not overflow from the exhaust port 11, and the electrolyte does not leak into the notch 1.
Reflux from 0. FIG. 4 shows the results of the vibration test, with the vertical axis representing vibration acceleration and the horizontal axis representing vibration frequency. Curve A is the liquid spout plug according to one embodiment of the present invention, and curve B is
and C are the overflow limit lines of a liquid port plug using a conventional flat splash-proof plate and a spiral splash-proof plate, respectively. There is no overflow in the lower area of the overflow limit line, and there is overflow in the upper area. The automobile body then vibrates as shown by curve D. Therefore, in contrast to the conventional liquid spout plugs shown by curves B and C, which cause overflow in the areas indicated by diagonal lines upward to the right or to the left, the liquid tap according to the present invention shown by curve A No overflow occurs over the entire vibration range. This is because the gas that entered the hollow cylindrical body 2 forcefully through the notch 10 is slowed down in each compartment 9, and the electrolyte that has entered the cylindrical body 2 together with the gas is separated from the gas flow and removed. This is thought to be because the water falls onto the sloped upper surface 5a of the splash-proof plate 5 and quickly passes through the gap t and flows back from the notch 10 without staying on the sloped upper surface 5a.

In the present invention, the position of the notch 10 is not limited to the lowest part of the sloped upper surface 5a of the splash-proof plate 5, but may be any other chamber, but in that case, a cylindrical body or the like facing the lowest part is provided for draining liquid. Since it is necessary to provide a hole separately, the one shown in the embodiment is preferable. Further, the top wall is not limited to a flat plate shape; for example, a cap-shaped top wall having a protrusion may be formed, and an exhaust port communicating with the outside may be formed on the top or side surface of the top wall.

As described above, according to the present invention, it is possible to obtain a liquid spout plug which has a simple structure and is completely free from overflow due to vibrations, particularly vibrations of automobiles, etc.

[Brief explanation of the drawing]

1 to 3 show a liquid spout plug according to an embodiment of the present invention; FIG. 1 is a perspective view, FIG. 2 is a vertical cross-sectional view, and FIG. 3 is an inverted cross-sectional view. FIG. 4 is a diagram showing the overflow limit line of the liquid port plug. 1...Liquid port plug, 2...Hollow cylindrical body, 3...Top wall,
4... Opening bottom surface, 5... Splash-proof plate, 5a... Inclined upper surface, 8... Compartment wall, 9... Compartment chamber, 10... Notch, 11... Exhaust port, 12... Communication hole.

Claims (1)

[Scope of utility model registration request] The open bottom surface 4 of the hollow cylindrical body 2 having the top wall 3 is sealed with a splash-proof plate 5 having an inclined upper surface 5a, and the interior of the hollow cylindrical body 2 is radially arranged and the lower end is closed by the inclined upper surface of the splash-proof plate 5. A plurality of compartments 9 are formed by partition walls 8 separated from 5a by a slight gap t, and a notch 10 is formed in one of the compartments 9a, and either one of the compartments 9b adjacent thereto is formed. A liquid outlet plug for a storage battery, characterized in that an exhaust port 11 is formed in a top wall 3 of the storage battery, and a communication hole 12 is provided in a partition wall 8 other than the partition wall 8a between both compartments to communicate each compartment 9.