JPS618847A - Method of manufacturing terminal section of lead storage battery - Google Patents

Abstract

PURPOSE:To shorten a terminal section, by casing a frame-like terminal on the top of a lead bushing integrally therewith, and melting the contact surfaces of the bottom of the terminal and the top of an electrode pillar to provide a melt- bonded portion. CONSTITUTION:A terminal 6 shaped as a rectangular frame is integrally provided on the top 9 of a lead bushing 3 when the bushing is cast. The roof of the terminal 6 has a bolt hole 7, in which a connecting bolt is fitted. The lead bushing 3 is embedded in a recess 2 when a battery jar lid 2 is molded by injection. An electrode pillar 8 is disposed so that it projects from the top 9 and extends through the center opening of the lead bushing 3, at the bottom of the terminal 6. The projecting portion of the electrode pillar 8, the bottom of the terminal 6 and the top 9 of the lead bushing 3 are melt-bonded together so that a melt- bonded portion 10 is provided. According to this constitution, the quantity of required lead is reduced, and the distance of electric conduction is decreased to diminish the resistance thereto.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an improvement in a lead-acid battery connection terminal having a lead bushing.

BACKGROUND ART Conventionally, as a lead-acid battery connection terminal structure having a lead bushing part and a rectangular frame-shaped connection terminal part integrally connected to the lead bushing part, the one shown in FIGS. 3 and 4 has been used. It was used. 1' is a battery case lid, 2' is a concave part formed at both end corners of the battery case lid 1', and 3' is a part that is embedded in the concave part 2' in advance during injection molding of the battery case lid 1'. A square frame-shaped connecting terminal 6', which can be made into a rectangular frame-shaped state lying sideways, is integrally cast on the upper edge surface 5 of the lead bushing, which has a connecting body part 4 projecting and extending from the curved arc. It is something. 1' is a bolt hole drilled in the ceiling wall surface of the square frame type connection terminal 6', 8' is a pole pole planted in a group of electrode plates (not shown) housed in the battery case, and a lead bushing is installed. Lead bushing 3' is inserted into the central space of 3' at the upper part of the head.
The welded portion 10' is melted and joined to the upper top edge γ of the lead-acid battery connecting terminal portion.

Problems to be Solved by the Invention In the conventional lead-acid battery connection terminal structure as described above, when the rectangular frame-shaped connection terminal 6' is integrally cast and connected to the lead bushing 3', the circular arc of the lead bushing 3' The connection is made by extending one end of the surface and interposing the connecting body part 4, so that the welded part 10' with the pole pillar 8' is a connecting body on the outside of the square frame type connecting terminal 6'. Section 4 and pole pillar 8'
This is achieved by fusion with the overhead surface. Therefore, the area of the recessed part 2 occupied by the lead-acid battery connection terminal part needs to be large. This method requires the connecting body 4 to which the shaped terminal 6' is attached, which has disadvantages such as increasing the weight of the storage battery and increasing the cost.

Means for Solving the Problems The present invention eliminates the above-mentioned drawbacks by melt-bonding the frame-shaped connecting terminal in the storage battery connecting terminal portion to the top of the pole pole via a lead bushing, and forming a welded portion. In forming the frame-shaped connecting terminal, the frame-shaped connecting terminal is cast directly onto the upper part of the lead bushing in an M-shaped form, and the contact surface between the bottom wall surface of the frame-shaped terminal and the upper part of the column head is melted. They are joined to form a welded part.

By eliminating the connecting body portion that extends one end of the lead bushing, the lead acid battery connecting terminal portion can be shortened and made lighter and smaller.

Embodiment To explain the present invention, when a lead bushing 3 is buried in the concave portions 2 at both end corners of a battery case lid 1 during injection molding of the battery case lid 1, the upper top edge portion of the lead bushing 3 is buried during injection molding of the battery case lid 1. The square frame type connection terminal 6 is integrally planted directly above the square frame type connection terminal 9 with the square frame body laid sideways, and the top wall of the square frame type connection terminal 6 is A bolt hole 7 into which a connecting bolt is inserted is bored. 8 is planted on a group of electrode plates (not shown) housed in the battery case, penetrates the center space of the lead bushing 3, protrudes from the top edge 9, and comes into contact with the bottom wall of the square frame-shaped connection terminal 6. The square frame-shaped connection terminal 6 connects to the bottom wall at the top of the pole pole.
The welded portion 10 is formed by integrally melting and joining the upper top edge portion 9.

Effects of the Invention By providing the frame-shaped connection terminal on the top edge of the lead bushing, the amount of lead used can be reduced, and the contact interface area between the lead bushing and the battery case cover can be simplified, making it easier to use when forming the battery case cover. It has great practical value, such as being able to eliminate concerns about interfacial delamination.

[Brief explanation of drawings]

FIG. 1 is a top view of the main parts of a lead-acid battery connection terminal obtained by the present invention, FIG. 2 is a cross-sectional view of the same, FIG. 3 is a top view of the main parts of a conventional lead-acid battery connection terminal, and FIG. It is the same sectional view. 1 is a battery case lid, 2 is a recessed part, 3 is a lead bushing, 6 is a frame-shaped connection terminal, 8 is a pole pole, 9 is an upper edge part, 10 is a welded part

Claims (1)

[Claims] When a battery case is covered with a battery case lid, which is formed by embedding a lead bushing in which a frame-shaped connection terminal is integrally cast on the top edge of the lead bushing into the recessed part of the battery case lid, it can be stored inside the battery case. The pole column of the electrode plate group penetrates through the lead bushing, and the bottom part of the frame-shaped connection terminal is inserted into the head part, and the top edge of the lead bushing and the frame-shaped connection terminal are three-way welded to form a welded part. A method for manufacturing a lead-acid battery connection terminal section, characterized by: