JPS6029808Y2 - Punched grid substrate for lead-acid batteries - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a lead acid battery grid.

The applicant previously filed Japanese Patent Application No. 52-69177 (Unexamined Japanese Patent Publication No. 54
-4328), in a punched lead-acid battery grid formed with an outer circumferential projecting frame that bends and projects on one side by press working,
In order to improve the retention of the active material filled in the space within the outer peripheral projecting frame, we proposed a system in which the lattice bars are alternately displaced and bent in a zigzag shape. Directly bending the bent grid bar and/or,
In other words, if the inner bent portion of the outer circumferential projecting frame and the bent portion of the lattice crosspiece are overlapped at the same location, the strength at that portion will be poor, the bending stress will double, and the corrosion resistance for the active material will also deteriorate. This will cause inconvenience.

The present invention provides a punched grid board for lead-acid batteries in the form of bent grid bars that solves the above-mentioned disadvantages and still achieves the above-mentioned conventional purpose. An active material filling having an active material filling surface area formed by a peripheral projecting frame 2 and a large number of intersecting lattice bars 3, 3...4, 4... These intersecting lattice bars 3, 3...4, 4...
・In a punched grid substrate 1 for a lead-acid battery, the retention of the active material is improved by displacing and bending one or both of the following:
The bent lattice bars 3, 3... or/and 4, 4...
... is bent leaving a horizontal portion 6 between it and the inner rising bent edge 2a of the outer circumferential projecting frame 2, and the bent ends 3a, 3a
...or/and 4at4a.

In one embodiment of the present invention shown in the drawings, lattice bars 3°3...
4, 4, . , 4... are bent grid bars 3, 3... 4, 4... which are alternately bent in a zigzag shape by a shaping press. By the punching, lattice bars 3, 3...4
.
In the illustrated case, a small frame-shaped flat surface 6 is left along the inside of the outer circumferential projecting frame 2, and the flat surface Each of the lattice bars 3, 3, 4, 4, .
, 3a...4a, 4a... were formed.

Also, as shown in the figure, the previous lattice bars 3, 3...4,
4. The adjacent end 3b intersects with the flat surface 6.
, 3b, 4b, 4b, . It can be obtained by preventing deterioration.

In terms of strength, it is preferable that the wide end portions 3b and 4b of the lattice bars 3 and 4 have a tapered shape that becomes wider toward the flat surface 6 as shown in the figure.

Of course, the bent lattice bars as described above may be formed for either the horizontal or vertical lattice bars.

Even in this case, it is preferable to perform punching so as to leave the frame-shaped flat surface 6 intact.

The frame-shaped flat surface 6 also serves to increase retention of the filled active material.

Reference numeral 8 denotes an extremely short protruding frame-shaped horizontal extra end formed by punching out the lattice substrate 1 of the present invention with a small distance from the outer rising bent line 2b of the outer circumferential projecting frame 2. This prevents variations in the height of the outer circumferential projecting frame 2 due to pressurization during filling of the active material as much as possible, and is useful for smooth and constant filling of the active material.

In this way, the present invention has a horizontal part 6 between the bent ends 3a and/or 4a of the grid bars 3 and/or 4 of the punched grid board for lead-acid batteries and the inner bent edge 2a of the outer circumferential projecting frame 2. Compared to the structure in which the lattice bars are bent overlapping the inner bent edges of the outer circumferential projecting frame, mechanical strength is improved, bending stress is reduced, and corrosion resistance is improved due to active materials, etc. It has the effect of bringing about

[Brief explanation of drawings]

FIG. 1 is a front view of an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along the line A--A in FIG. 1. 1... Board, 2... Outer peripheral projecting frame, 2a.
...Inward rising bent edge, 3, 4...
Lattice crosspiece, 3a, 4a... Lattice crosspiece bent end, 6...
...Horizontal spacing.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A peripheral projecting frame 2 which is bent and protruded into one piece by pressure is formed, and a large number of lattice bars 3, 3... intersecting the inside thereof.
The grid lines 3, 3, 4, 4 are shaped into an active material filling space 5 having an active material filling surface area formed from...4, 4..., and intersect these lattice lines 3, 3... Any one of...
In the batting grid substrate 1 for a lead-acid battery in which retention of the active material is improved by displacing and bending one or both of the bent grid bars 3,
3... or/and 4° 4... is bent leaving a horizontal portion 6 between it and the rising bent edge 2a of the outer circumferential projecting frame 2, and the bent ends 3a, 3a. A punched lattice board for lead-acid batteries that enforces .../, 4a, 4a...... 2. The lead-acid battery according to claim 1, wherein the horizontal portion 6 is a frame-like flat surface formed inside the inner rising bending line 2a of the outer peripheral projecting frame 2. Punched grid board.