JP3109579U - Battery plug for storage battery - Google Patents

Abstract

In a liquid port plug, a liquid port plug for a storage battery that also serves as a liquid port plug is provided by having a dual mounting part in the liquid port plug of a liquid battery and a sealed battery.
A fitting portion that fits into a liquid injection hole that is perforated in a lid of a battery case is formed at a lower outer periphery of a hollow cylinder that is open at the top and bottom surfaces, and an upper surface opening of the hollow cylinder is formed at an upper outer periphery. A fitting portion for fitting a cap-shaped cover covering the hollow cylindrical body is formed, and the fitting portion formed on the cap-shaped cover is fitted to the fitting portion on the outer periphery of the hollow cylindrical body, and the hollow cylinder is formed by the cap-shaped cover. The upper opening of the hollow cylinder is used as a rubber valve or a mounting part for an explosion-proof filter, and at least two notches are formed at the edge of the upper opening of the hollow cylinder. What was formed above.
[Selection] Figure 2

Description

The present invention relates to a liquid spout usable for a liquid battery and a sealed battery.

Conventionally, the liquid spigot applied to the liquid injection hole pierced in the battery case lid of the storage battery is a liquid battery having a large amount of free electrolyte, and the degree of impregnation of the electrode plate group without the free electrolyte. The internal structure of the sealed battery limited to the amount of electrolyte is different.

For example, in a liquid battery such as a lead-acid battery for automobiles, the liquid plug is formed of a headed cylinder, an exhaust port is provided in the head, a through-hole is provided in the central side, and a slit is provided in the lower part. is there. In addition, a large number of splash-proof plates integrally formed with the support body are accommodated in the inside of the cylindrical body to form an exhaust path, and furthermore, there is a ventilation micro hole between the exhaust port of the head and the splash-proof plate. In addition, an explosion-proof filter that prevents ignition from oxygen and hydrogen gas accumulated in the battery from an external ignition source is arranged (Patent Document 1).

Further, in a sealed battery, the liquid plug is composed of a cylindrical body whose upper surface is open, the upper surface is covered with a cap-shaped cover, the inside of the cylindrical body is closed with a plate having an exhaust port in the center, and the exhaust port is closed. A rubber valve is crowned on the upper part of the cylindrical part where the surrounding cylindrical part is formed, and the exhaust port is normally closed (Patent Document 2).

JP 2002-313317 A Japanese Utility Model Publication No. 6-44019

However, since the liquid stopper structure is different as described above, for example, even in the case of a battery case lid of the same size, a liquid battery and a sealed battery each require a dedicated liquid stopper, and the number of parts is small. Increasing management has become annoying.

Under such a background, it is desired to improve the structure of the liquid port plug of the liquid battery and the sealed battery so that the liquid port plug is also used.

The present invention forms a fitting portion that fits into a liquid injection hole drilled in the lid of the battery case on the lower outer periphery of the hollow cylinder that opens up and down, and on the upper outer periphery excluding the upper end of the hollow cylinder. Forming a fitting part for fitting a cap-shaped cover covering the upper surface opening of the hollow cylinder, and fitting the fitting part formed on the cap-shaped cover to the fitting part on the upper outer periphery of the hollow cylinder The cap-shaped cover covers the upper surface opening of the hollow cylinder, and the upper surface opening of the hollow cylinder is used as a mounting portion for a rubber valve or an explosion-proof filter.

In the present invention, it is possible to use both a liquid battery and a sealed battery as a liquid port plug for a battery, so there is no need to prepare a dedicated liquid port plug as in the prior art. In addition to facilitating parts management, it is possible to significantly improve the cost of manufacturing the storage battery.

  Embodiments of the present invention will be described below, but the present invention is not limited to the following description.

  FIG. 1 is a cross-sectional view showing an embodiment of the present invention, where 1 is a liquid spigot, 2 is a top opening, 3 is a cut, 4a and 4b are fitting portions, 5 is a cap cover, and 6 is exhaust. A mouth, 7a is a rubber valve attached to the upper surface opening, 8 is a rubber packing, and 9 is a battery case lid.

The liquid spigot 1 is composed of a hollow cylindrical body 1a whose upper and lower surfaces are open, and is formed of a synthetic resin. A screw is formed on the outer periphery of the lower part of the hollow cylindrical body 1a as a fitting portion 4b with the battery case lid 9, and the screw and rubber formed on the inner peripheral surface of the liquid injection port 9a drilled in the battery case lid 9 The liquid injection port 9a is closed by screwing through the packing 8.

A screw as a fitting portion 4a with the cap-shaped cover 5 is formed on the outer periphery of the upper portion of the hollow cylindrical body 1a except for the upper end, and is formed on the lower portion of the inner peripheral surface of the cap-shaped cover 5 formed in an inverted U-shaped cross section. The formed screw is screwed and fitted to cover the upper opening 2 of the hollow cylindrical body 1a with a predetermined interval. As a result, a space in which the upper opening 2 protrudes is formed in the internal space covered with the cap-shaped cover 5.

The top opening 2 of the hollow cylindrical body 1a covered with the cap-like cover 5 in this way is used as a dual-purpose mounting portion on which a rubber valve or an explosion-proof filter can be mounted.

  That is, as shown in FIG. 1, a rubber valve 7a having an inverted U-shaped cross section is fitted into the projecting upper opening 2 and the opening 2 is sealed, so that the liquid mouth plug for the sealed battery is sealed. As shown in FIG. 5, which will be described later, an explosion-proof filter 7b is fitted into and attached to the upper opening 2 to close the opening 2, thereby providing a liquid port plug for a liquid battery. It is.

Reference numeral 3 denotes a cut formed in the outer peripheral wall of the upper opening 2 so as to open upward. In the figure, 10 is an enlarged diameter portion formed at the center of the side surface of the hollow cylindrical body 1a, and 11 is a gripping portion having a hexagonal outer shape so that it can be easily gripped when the liquid spigot 1 is fitted to the battery case lid 9. It is.

FIG. 2 is a front view of the liquid spout 1. As shown in FIG. 2, an exhaust hole 6 is formed on the side surface of the cap-shaped cover 5 so as to penetrate the side surface. The exhaust port 6 is formed above a portion corresponding to the fitting portion 4a formed on the upper outer periphery of the hollow cylindrical body 1a. As shown in the drawing, the exhaust port 6 is not limited to a circular one, and may have any shape such as a square or a triangle. The exhaust port 6 may be formed on the upper surface of the cap-shaped cover 5, but is preferably provided on the side surface as shown in order to prevent clogging due to dust or the like. 1 denote the same components as in FIG.

FIG. 3 is a front view of a state where the cap cover is removed. As shown in FIG. 3, the rubber valve 7a is made of, for example, ethylene propylene rubber or fluoro rubber, and is fitted so as to cover the upper surface of the upper opening 2 and the outer peripheral surface of the hollow cylindrical body 1a. When it is completely covered and used with the liquid stopper applied to the battery case lid 9, when the internal pressure of the battery case rises, the rubber valve 7a is expanded and released to the outside through the exhaust hole 6, This prevents further increase in the internal pressure of the battery case.

FIG. 4 is a plan view excluding the rubber valve. As shown in FIG. 4, four cuts 3 are formed in the outer peripheral wall of the upper surface opening 2 of the hollow cylindrical body 1a. This notch 3 is formed in a rectangular shape that opens to the upper surface, and when the internal pressure of the battery case rises, the rubber valve 7 is pushed away from the notch 3 to facilitate exhaust. Further, the gripping portion 11 formed in the hollow cylindrical body 1a has a hexagonal shape as shown in the figure, and is gripped when the liquid spigot 1 is fitted to the battery case lid 9. It makes it easy to rotate.

FIG. 5 is a front view of the upper opening 2 with the cap-like cover removed when the explosion-proof filter 7b is attached. The explosion-proof filter 7b has a disk shape made of beaded polypropylene resin or ceramic, and a protrusion 7b 'that fits into a notch 3 formed in the upper opening 2 is integrally formed on the lower surface thereof. The protrusion 7b ′ is fitted in the notch 3 and attached. At this time, since the four cuts 3 are formed in four directions, the mounted explosion-proof filter 7b is restrained from moving to the left and right sides, and further, the flesh is so close to the cap-shaped cover 5 that covers the disk-shaped portion. The explosion-proof filter 7b is not detached from the upper surface opening 2 by forming it thick.
The protrusion 7b ′ may be bonded into the cut 3 with an adhesive.

Furthermore, when there is no notch | incision, you may adhere and fix to the upper end edge part of the hollow cylindrical body 1a, or you may fit in the upper surface opening part 2. FIG.

An annular groove for fitting a support body (not shown) formed integrally with the splash-proof body may be formed on the lower inner periphery of the hollow cylindrical body 1a, and the support body may be fitted if necessary. .

Sectional drawing which shows the state which fitted this invention embodiment liquid mouth plug to the battery case lid Front view of a liquid spigot according to an embodiment of the present invention Front view of the liquid spigot of the embodiment of the present invention with the cap-shaped cover removed Top view of the liquid spigot of the present embodiment with the rubber valve removed Front view of another embodiment of the present invention with the cap cover removed

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Liquid stopper 1a Hollow cylindrical body 2 Upper surface opening part 3 Cut 4a Fitting part 4b Fitting part 5 Cap-shaped cover 7a Rubber valve 7b Explosion-proof fill fur 9 Battery case cover

Claims (1)

A fitting portion is formed on the lower outer periphery of the hollow cylinder that opens at the top and bottom surfaces, and is fitted to a liquid injection hole drilled in the lid of the battery case. A fitting portion for fitting a cap-shaped cover covering the upper surface opening of the cylindrical body is formed, and the fitting portion formed on the cap-shaped cover is fitted to the fitting portion on the upper outer periphery of the hollow cylindrical body, A storage battery liquid spigot characterized in that a top cover of a hollow cylinder is covered with a cap-like cover, and the top opening of the hollow cylinder is used as a mounting part for a rubber valve or an explosion-proof filter.