JPH0374050A - Welding method for storage battery terminal - Google Patents

Abstract

PURPOSE:To increase workability, to make welded shape uniform, and to increase welding strength by soaking a brush in flux ejected from a tube, and coating the head circumference of a post with the flux, then welding the post and a bushing terminal into which the post is inserted. CONSTITUTION:A flux coating tool 7 is prepared by rotatably fitting a ring- shaped plastic brush which is to be in contact with the circumference of a head 8 of a post 1 at the lower end of a flux tube 4 in which flux is filled, and it is positioned so that the brush is in contact with the circumference of the projected head 8 of the post 1. Flux in the tube 4 is ejected and the brush is soaked with the flux, then the brush is rotated to uniformly and thinly apply the flux to the circumference of the head 8. After the brush is removed, a bushing terminal 5 and the post 1 are welded through the flux. Flowing out of the flux is avoided, and the post 1 and the bushing terminal 5 are cleanly, strongly welded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a method for welding terminals in lead-acid batteries for automobiles.

(Prior art) The conventional method of welding terminals in lead-acid batteries for automobiles was to perform manual or automatic welding mainly using a gas burner, but this method was difficult to work with and did not allow for uniform welding. Since this is difficult to perform, automatic resistance welding using electricity has recently been adopted.

This welding method uses flux, and as a method for applying this flux, the present applicant previously proposed in Japanese Patent Application No. 1-52874 that the top of the pole pole 1 is welded as shown in FIG. A method was proposed in which a recess 2 is provided in the shape, a flux 3 is dripped into the recess from a flux tube 4, and the bushing terminal 5 is welded through the flux.

However, when welding using this drip method, when attaching a lid to a battery case, it is necessary to insert the pole into the bushing terminal that is pre-attached to the lid. The upper end got caught on the edge of the terminal, significantly hindering the work of inserting the pole pole.

Therefore, by making the head of the pole pole convex and having a small diameter, it is possible to easily insert the pole pole into the bushing terminal, but this creates a problem in the method of cutting and applying the fluff necessary for welding. It was something. In other words, since the head of the pole is convex, when flux is applied to the top by the dripping method as described above, the flux cannot be held in a predetermined position, and the flux may be applied to only one part of the terminal or After the terminal was welded, the shape of the terminal was not smooth and it was impossible to weld firmly.

(Problems to be Solved by the Invention) As a result of intensive research in view of the current situation, the present invention has been developed for a storage battery which has good welding workability with the bushing terminal at the pole pole, has a uniform shape after welding, and has excellent strength. This is a developed method for welding terminals.

(Means for Solving the Problems) The method of the present invention uses a flux applicator, which includes a flux tube to be filled with flux and a brush integrally attached to the lower end, placed above a terminal pole pole having a convex head cross section. After installing the brush so that it is in contact with the outer circumference of the pole column head, pour out the flux in the tube and apply the flux to the entire circumference of the pole column head while letting it soak into the brush. This is characterized in that the pole and the bushing terminal that is inserted through and covered by the pole pole are welded together.

In the present invention, a concave portion is formed on the outer periphery of the head of the pole column, and flux can be applied thinly to the entire outer periphery of the pole column by brushing this portion. Therefore, there is no risk of the flux flowing out, and welding to the bushing terminal can be finished beautifully and firmly. Furthermore, the work of inserting the pole pole into the bushing terminal can be carried out smoothly without any hindrance.

(Example) As shown in FIG. 3, a flux applicator 7, which has a ring-shaped plastic brush 6 rotatably attached to the lower end of a flux tube 4 to be filled with flux, is attached to the second As shown in the figure, the brush is installed so as to be in contact with the outer periphery of the head of the pole column 1 whose head is in a convex shape 8, and then the flux in the tube is poured out and soaked into the brush. At the same time, the brush is rotated to evenly and thinly apply the flux to the outer periphery of the head. Thereafter, the brush is removed and the bushing terminal 5 and the terminal pole post 1 are electrically welded together using flux.

(Effects of the Invention) According to the method of the present invention, when attaching a battery case lid to a battery case, the workability of inserting the pole pole into the terminal bushing that has been attached to the battery case lid in advance can be made extremely easy. In addition, when welding the pole post and the terminal bushing after insertion, the outer shape after welding can be finished extremely smooth, which is industrially useful.

[Brief explanation of drawings]

Fig. 1 is a schematic explanatory diagram showing a conventional welding method for a storage battery terminal, Fig. 2 is a schematic explanatory diagram showing a welding method for a storage battery terminal according to the present invention, and Fig. 3 is a schematic explanatory diagram showing a welding method for a storage battery terminal according to the present invention. FIG. 3 is a top view of the applicator. DESCRIPTION OF SYMBOLS 1... Terminal pole column, 2... Recessed part, 3... Flux, 4... Flux tube, 5... Bushing terminal, 6... Brush, 7... Flux applicator, 8...・
・Terminal pole column head. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] A flux applicator consisting of a flux tube and a brush integrally attached to the lower end of the flux tube for filling the upper part of the terminal pole pole with a convex head cross section is installed so that the brush touches the outer periphery of the pole pole head. After that, pour out the flux in the tube and apply the flux to the entire circumference of the head of the pole column while letting it soak into the brush. A method of welding terminals for a storage battery, the method comprising welding the terminals.