JPH04324242A - Manufacture of cover for storage battery - Google Patents

Abstract

PURPOSE:To completely bury an intermediate part of a Faston terminal in a cover so as to prevent corrosion of the Faston terminal by injecting resin similar to a synthetic resin piece previously inserted from a resin filler hole of a mold to form the cover. CONSTITUTION:Synthetic resin pieces a, b, previously formed of resin equal to resin 12 by which a cover is formed, are inserted to a Faston terminal 9, and next a longitudinally moving mold B is inserted to an adapter 91 and placed on an upper part of a fixed mold D. Further in a Faston terminal 9a, the longitudinally moving mold B is inserted to a tab 91a to mount one more end part 92a to the fixed mold D. An upper part and periphery are surrounded by an upper part mold A and a vertically moving mold C to inject the resin 12 into a space part 10 in a mold from a resin filler hole 11 of the upper part mold A. Soon after solidifying the resin 12, when each casting mold A, B, C, D is released, the synthetic resin pieces(a, b)are integrally formed with the resin 12 to complete the cover 2 buried with the Faston terminals 9, 9b.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a lid for a storage battery that can be connected with Faston terminals.

0002

2. Description of the Related Art Generally, storage batteries used in small two-wheeled vehicles and home appliances are very compact. Some storage batteries of this type are provided with a Faston terminal tab, and a Faston terminal receptacle housing is attached to the tab for connection. The inventors
Such a storage battery is disclosed in Japanese Patent Application No. 2-412008.

In this storage battery, as shown in FIG. 9, a convex part 3 is formed on the top surface of the lid 2, leaving a part 3a, and the convex part 3 has a liquid injection part facing upward and extending in the longitudinal direction. 6, and a pair of Faston terminals 9, 9a with one end protruding from the convex portion 3, and the other ends 92, 9 of the pair of Faston terminals 9, 9a are provided.
2a is extended inside the lid 2 so as to be connected to the pair of pole posts 8, 8a of the battery case, and the tabs 91, 91a of the pair of Faston terminals 9, 9a are positioned with the liquid injection part 6 in between, and the longitudinal It is characterized in that it is located on the upper surface 3a of the lid 2 so as to protrude to the same side along the direction.

A conventional method for embedding a Faston terminal 9 extending in the longitudinal direction of the liquid injection part 6 in the lid 2 of such a storage battery is to embed the tab 9 of the Faston terminal 9 as shown in FIG.
1 and the other end 92 are supported by the back and forth movable mold B and the fixed mold D shown in FIG.
The method was to inject the liquid into the cavity 10 of the mold.

[0005]

[Problem to be solved by the invention] In the above conventional method,
During molding, the injection pressure is extremely high at 700 to 1400 kg/cm2, so the longitudinal part 9 of the Faston terminal 9
3 was deformed and abutted against the upper part of the fixed mold D, and was exposed inside the battery when the lid 2 was formed. Further, there was a problem in that the exposed Faston terminal 9 came into contact with the electrolyte and corroded early.

The present invention has been made in view of the above problems, and its object is to provide a method for manufacturing a storage battery lid that prevents the Faston terminal 9 from being exposed inside the storage battery and corroding. It is about providing.

[0007]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides faston terminals 9 in spaces 10 in molds A, B, C, and D of storage battery lid 2 using synthetic resin pieces A and B. Then, resin 12 similar to that of the synthetic resin pieces A and B is injected from the resin injection hole 11 of the mold A to form the lid 2.
It is characterized by forming.

[0008]

[Function] A synthetic resin piece made of the same resin as the lid.If you place the Faston terminal in the mold of the lid and inject the resin into the mold, the synthetic resin piece will be integrated with the resin. Therefore, it is possible to form a lid in which the Faston terminal is completely buried.

[0009]

[Example] An example will be described with reference to the drawings. 1 is a plan view of a storage battery using a lid manufactured by the method of the present invention, FIG. 2 is a sectional view taken along the line XX' in FIG. 1, and FIG. 3 is a sectional view taken along the Y--
It is a Y' sectional view, 1 is a storage battery, 2 is a lid, and the lid 2
has a protrusion 3 on its upper surface, and on the side surface (right side in FIG. 1) of the protrusion 3 are tabs 91, 91a of Faston terminals 9, 9a into which a receptacle housing (not shown) is inserted; It has a pair of stopper protrusions 5, 5a that engage with the receptacle housing. The upper surface of the convex portion 3 has an injection portion 6 that fits into an injection port of an electrolytic solution container (not shown), and an injection projection 7 that breaks through a thin film formed in the injection port. Further, the faston terminals 9, 9a are buried inside the convex portion 3, and the pole pillars 8 are connected to the end portions 92, 92a.
, 8a.

In order to form the lid 2 having the above-described structure, as shown in FIGS.
Insert the synthetic resin pieces A and B previously formed from the same resin as in 2, then insert the back-and-forth movable mold B into the tab 91 as shown in FIG. 6, and place it on the upper part of the fixed mold D. Furthermore, the faston terminal 9a has a back-and-forth movable mold B inserted into the tab 91a, and the other end 92a is placed on the fixed mold D. Then, the upper part and the surrounding area are surrounded by an upper mold A and a vertically movable mold C, and the resin 12 is injected into the space 10 in the mold from the resin injection hole 11 of the upper mold A.
Inject into. After the resin 12 hardens for a while, each mold A
, B, C, and D are separated, the synthetic resin pieces A and B become integrated with the resin 12, and the lid 2 in which the Faston terminals 9 and 91 are embedded is completed.

[0011]

[Effects of the Invention] As detailed above, according to the present invention, the following effects can be obtained. (1) The intermediate part of the Faston terminal can be completely buried in the lid, and corrosion of the Faston terminal can be prevented. (2) Since the synthetic resin piece and the resin injected into the mold are integrated, a lid for a storage battery with an excellent appearance without unsightly boundaries can be obtained.

[Brief explanation of drawings]

FIG. 1 is a plan view of a storage battery manufactured according to the present invention.

FIG. 2 is a sectional view taken along line X-X' in FIG. 1;

FIG. 3 is a sectional view taken along the Y-Y' line in FIG. 1;

FIG. 4 is a perspective view of the Faston terminal immediately before inserting a synthetic resin piece.

FIG. 5 is a perspective view of a Faston terminal with a synthetic resin piece inserted therein.

FIG. 6 is an explanatory diagram showing the method of the present invention.

FIG. 7 is a perspective view of a Faston terminal.

FIG. 8 is an explanatory diagram showing a conventional method.

FIG. 9 is a plan view of a conventional storage battery.

[Explanation of symbols]

2 Lid 9 Faston terminal 10 Space inside the mold 11 Resin injection hole 12 Resin A, B, C, D Mold A, B Synthetic resin piece

Claims (1)

[Claims] [Claim 1] Molds (A, B, C) for storage battery lid (2)
, D) with a synthetic resin piece (A, B), and then place the Faston terminal (9) in the space (10) in the mold (D).
A method for manufacturing a storage battery lid, characterized in that the lid (2) is formed by injecting the same resin (12) as the synthetic resin pieces (A, B) through the resin injection hole (11) in A). .