JPH0530297Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a screw-type storage battery fluid spout plug used in automotive lead-acid batteries and the like.

BACKGROUND TECHNOLOGY AND PROBLEMS A conventional liquid spout for a storage battery includes a liquid spout main body comprising a flange portion and a screw portion for screwing into a liquid spout mounting opening formed on the lid of the storage battery; It is generally formed from a cylindrical part that has a labyrinth structure inside to prevent liquid leakage, and a liquid spout plug that is formed by assembling the separately formed liquid spout main body and the cylindrical body into a single liquid spout plug. many.

In such conventional liquid spout plugs, a liquid spout main body having a threaded portion and a cylindrical body are generally integrated by forced fitting, and as shown in FIG. 1 and a cylindrical body 2, the liquid spout body 1
comprises a collar portion 3 and a cylindrical portion 4 integrally formed, the cylindrical portion 4 comprises a threaded portion 5 and a recessed portion 17,
The threaded portion 5 is to be screwed into a liquid port attachment opening formed in the lid of the storage battery, and is located on the outer periphery of the cylindrical portion between the collar portion 3 and the end of the cylindrical portion 4. The recessed part 17 is for fitting and holding the cylindrical body 2 and is formed on the inner circumference of the end of the cylindrical part 4, and the cylindrical body 2 is It is a cylindrical liquid leakage prevention member having a labyrinth structure inside, and is equipped with a convex body 16 on the outer periphery of the end portion to be fitted into the concave part 17 of the liquid spout body cylindrical part 4. can be,
By fitting the convex body 17 and the concave part 16, the liquid spout main body 1 and the cylindrical body 21 were formed into a body.

However, in such a conventional device, since the fitting member of the cylindrical body 2 is the convex body 16, the maximum inner diameter of the cylindrical body 2 in the portion where the convex body 16 is provided is equal to the root diameter of the convex body 16. There is a drawback that the size is limited by the size of the liquid spout, and the size has to be further reduced depending on the wall thickness of the cylindrical portion 4 of the liquid spout body 1 necessary for fitting.

The larger the inner diameter of the cylindrical body 2, the better the internal processing can be performed to prevent leakage. An example of good internal processing is the ability to form a large number of baffles for drip-blocking inside. For this reason, the conventional structure had the drawback of impairing the leakage prevention effect.

Means for Solving the Problems Therefore, this invention comprises a liquid spout body and a cylindrical body, the liquid spout body has a collar part and a cylindrical part, and the cylindrical part has a threaded part and a convex body, the threaded part is for being screwed into an opening for attaching a liquid port formed in the lid of the storage battery, and the flange part and the cylindrical part are connected to each other. The convex body is formed on the outer periphery between the threaded part and the end of the cylindrical part, and the convex body is for fitting and holding the cylindrical body. The cylindrical body is a cylindrical liquid leakage prevention member having a labyrinth structure inside, and the inner periphery of the end of the cylindrical body is formed on the outer periphery of the liquid spout plug body. A storage battery that is equipped with a concave part to be fitted into a convex body, and in which the liquid spout body and the cylindrical body are integrally formed by fitting the convex body and the concave part. The above-mentioned problems are attempted to be solved by providing a liquid outlet plug.

Examples The present invention will be explained in detail by examples. FIG. 1 shows a liquid port stopper with a thread diameter of 18 mm according to an embodiment of the present invention. In the figure, 1 is a liquid spout body made of synthetic resin or the like, 2 is a cylindrical body attached to the liquid spout body 1, 3 is a flange of the liquid spout body 1, and 4 is a cylindrical body of the liquid spout body 1. It is a cylindrical part. Reference numeral 5 denotes a threaded portion to be screwed into an opening for installing a liquid spout formed in the lid of the storage battery, and is formed on the outer periphery between the collar portion 3 and the end of the cylindrical portion. It is. Reference numeral 6 denotes a convex body for fitting and holding the cylindrical body 2, and is formed on the outer periphery of the cylindrical part between the threaded part 5 and the end of the cylindrical part. 2 is a cylindrical body made of a cylindrical liquid leakage prevention member having a labyrinth structure (not shown) inside;
The inner circumferential portion of the end portion thereof is provided with a concave portion 7 for fitting into the convex body 6 of the cylindrical portion 4 of the liquid spout body. By forcibly pressing and fitting the convex body 6 and the concave part 7, the liquid spout main body 1 and the cylindrical body 2 are integrally formed, and the liquid spout plug for a storage battery according to the present invention is formed. is obtained.

The liquid spout plug for a storage battery of the present invention has the structure as described above.
In the conventional liquid spout shown in the figure, the thinnest wall thickness that can be molded with thermoplastic resin at the concave portion 17 of the liquid spout body 1 is approximately 0.5 mm on one side, and the convex portion 16 of the cylindrical body 2 Since it cannot be fitted unless it is equal to or smaller than the maximum inner diameter of the recessed part 17 of the liquid spout body 1, the maximum external dimension of the convex body 16 is 0.5 mm on each side from the maximum inner diameter of the recessed part 17, totaling 1 mm. , i.e.,
13.7mm, which is 1mm subtracted from the valley diameter of concave portion 17, 14.7mm.
limited to a certain extent. Furthermore, the part where the baffle plate is actually formed is inside the cylindrical body 2 below the convex body 16 in the drawing, and for convenience of core cutting of the molding die, the maximum inner diameter of this part is the part of the convex body 16. Generally speaking, it cannot be made larger than the maximum inner diameter of the Therefore, the maximum inner diameter of the cylindrical body 2 is the maximum outer diameter of the convex body 16.
The thickness is limited to about 12.7 mm, which is 13.7 mm and further reduced by 0.5 mm on each side of the thinnest wall thickness required for the 16 convex parts.

However, in the embodiment of the present invention shown in FIG. can be made the same as the root diameter of the threaded portion 5, which is 14.7 mm. As a result, the area of the outer diameter portion of the concave portion 7 of the cylindrical body 2 can be increased by 15% compared to the conventional type. Furthermore, since the maximum inner diameter of the cylindrical body 2 that actually forms the baffle plate is approximately 13.7 mm, the cross-sectional area at the maximum inner diameter portion can be increased by 16% compared to the conventional one.

Effects of the Invention As described above, compared to conventional products, the liquid spout plug for storage batteries of the present invention can secure sufficient space inside the tube body, improve the liquid leakage prevention effect, and put it into practical use. The utility value of the above is great.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part showing one embodiment of a liquid spout plug for a storage battery according to the present invention, and FIG. 2 is a sectional view of a main part showing an example of a conventional liquid spout plug for a storage battery of this type. 1... Liquid spout body 1, 2... Cylindrical body, 3... Flam part, 4... Cylindrical part, 5... Threaded part, 6, 16...
... Convex body, 7, 17... Concave part.

Claims (1)

[Claims for Utility Model Registration] Comprised of a liquid spout body 1 and a cylindrical body 2, the liquid spout body 1 has a collar portion 3 and a cylindrical portion 4, the cylindrical portion 4 has a threaded part 5 and a convex body 6, the threaded part 5 is for being screwed into an opening for installing a liquid spout formed in the lid of the storage battery,
The convex body 6 is formed on the outer periphery between the collar part 3 and the end of the cylindrical part 4, and is for fitting and holding the cylindrical body 2. and the end of the cylindrical part 4. The cylindrical body 2 is a cylindrical liquid leakage prevention member having a labyrinth structure inside, and the end thereof A concave part 7 is provided on the inner circumference of the liquid spout plug body to be fitted into a convex body 6 of the cylindrical part 4 of the liquid spout body. A liquid spout for a storage battery, in which a spout body 1 and a cylindrical body 2 are integrally formed.