JPH0120770Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of the snap terminals found in, for example, 006P type dry batteries.

Conventionally, the snap terminal of this type of dry battery has been constructed as shown in FIG. A pair of stud terminals 1 and socket terminals 2 constituting the snap terminals are each press-molded into a predetermined shape. Stud terminal 1 has a flange at the base 2
It is formed into a heavy cylindrical shape, and a mounting hole 1a is provided at the center of the cylindrical interior. The socket terminal 2 is formed in the shape of a container with an appropriate taper dimension to fit into the stud terminal 1 and widens toward the opening side, and a mounting hole 2a is provided at the center of the bottom thereof. A terminal board 3 made of synthetic resin has mounting holes 3a and 3b for a stud terminal 1 and a socket terminal 2, and the stud terminal 1 is fixed to the board 3 by an eyelet 4 passing through the mounting holes 1a and 3a. The socket terminal 2 is fixed to the substrate 3 by eyelets 5 passing through the mounting holes 2a and 3b. In addition, when caulking the lower end sides of the eyelets 4 and 5, lead plates 6 and 7 for wiring inside the dry battery are inserted through the eyelets 4 and 5, respectively, and these lead plates 6 and 7 are also inserted into the eyelets 4 and 5. In addition to being fixed, the terminal 1,
2 and are electrically connected to each other.

In the conventional structure described above, the fixing process using the eyelets 4 and 5 in the manufacturing process was extremely troublesome. In other words, the mounting hole 1a of the stud terminal 1,
The mounting hole 3a of the board 3 and the mounting hole of the lead plate 6 are aligned, and the eyelet 4 is inserted therein, but alignment of these four parts is very troublesome. The same applies to the socket terminal 2 side.
Aligning these four parts is extremely troublesome even when done manually, and even when automated, a fairly sophisticated assembly machine is required. Conventionally, this troublesome assembly has had a significant negative impact on the cost of the product. In addition, press-molded terminal 1
and No. 2 also had the disadvantage that they were easily bent or deformed during the assembly process, and the fitting accuracy of the snap terminals was likely to vary when the product was completed.

This idea was created in view of the conventional problems mentioned above, and its purpose was to provide a snap terminal for dry batteries that has a small number of parts, is easy to assemble, can reduce costs, and has good fitting accuracy. It is in.

Hereinafter, embodiments of this invention will be described in detail based on the drawings.

FIGS. 2A, B, and C show snap terminals of a dry battery according to an embodiment of this invention. A terminal board 10 made of synthetic resin is provided with a cylindrical portion 11 that becomes a stud portion and a through hole 12 that is continuous with the cylindrical portion 11.
slits S and S that form the socket part and serve as the socket part.
Socket pieces 13a, 13b, 1 divided at...
A cylindrical portion 13 consisting of 3c and 13d is provided protrudingly, and a socket piece 1 is provided inside the cylindrical portion 13.
A slit-shaped through hole 1 is provided at the base of 3a and 13b, respectively.
4a and 14b are formed.

Then, a metal piece 15 having an eyelet-shaped upper surface flange 15a as shown in FIG. 3A is inserted into the cylindrical portion 11 and the through hole 12 of the stud portion.
The upper end of the eyelet-shaped metal piece 15 is caulked to the upper end of the cylindrical part 11, and the lower end is caulked so as to sandwich a lead plate 16 for internal wiring between it and the terminal board 10. Stud terminal A
It consists of That is, the upper surface flange 15a of the metal piece 15 covers the upper end surface portion of the cylindrical portion 11 protruding from the upper surface of the board 10, and the conventional stud terminal 1
You can get the same functionality as . Note that the metal piece 15 may be a hollow rivet-shaped metal piece as shown in FIG. 3B.

In addition, in the socket part, the U shown in FIG.
A metal piece 17 bent into a letter shape is attached. Both arm portions 17a and 17b of this U-shaped metal piece 17 are inserted into the slit-like through holes 14a and 14b from the bottom side of the substrate 10, but at that time, the intermediate portion between the metal piece 17 and the substrate 10 A lead plate 18 for internal wiring is inserted between them. Both arms 17 of U-shaped metal piece 17
a and 17b protrude from the through holes 14a and 14b and are arranged along the inner surfaces of the socket pieces 13a and 13b. Then, both ends of the U-shaped metal piece 17 are caulked to the upper ends of the socket pieces 13a, 13b so as to cover the upper and peripheral surfaces of the socket pieces 13a, 13b, and are fixed to the board 10, and are connected to the socket terminal B.
is configured. Here, the socket pieces 13a and 13b divided by the slit S are elastically deformed relatively easily, and since the inner surfaces of the socket pieces 13a and 13b are covered with the metal piece 17, the cylindrical portion 1
When the above-mentioned stud terminal is press-fitted into the socket terminal 3, it fits into this part and makes sufficient electrical contact with the metal piece 17, so that it functions in the same manner as the conventional socket terminal 2.

In addition, in the embodiment shown in FIG.
The cylindrical portion 13 composed of 13d has a cylindrical shape, but this cylindrical portion 13 may have a rectangular cylindrical shape,
Furthermore, it may be formed into a rectangular tube shape with five or more corners using five or more socket pieces.

Further, in the embodiment shown in FIG. 2, the socket piece 13
A slit-shaped through hole is also provided at the bases of the sockets 13c and 13d, and the metal piece 17 is shaped like a combination of two U-shapes shown in FIG. 4B, and the four socket pieces 13a to 13
If all the inner surfaces of d are covered with metal pieces 17, the reliability of electrical contact will be improved.

Further, regarding the socket terminal side, the metal piece 17 and the lead plate 18 can be integrated. FIG. 4C shows an example of the shape of the metal piece 17 in that case,
Figure D shows the state in which the socket portion is attached to the cylindrical portion 13. In this way, the number of parts can be further reduced.

As explained in detail above, in the dry battery snap terminal according to this invention, each metal piece is inserted into the stud part and socket part of the terminal board, the lead plate is inserted into the metal piece, and the metal piece is inserted into the stud part and the socket part of the terminal board. It can be assembled by caulking, has fewer parts than conventional products, and eliminates the trouble of assembling when aligning the holes of multiple parts and inserting eyelets. In other words, both the number of parts and the number of assembly steps can be reduced, and the product cost can be reduced accordingly. Furthermore, since the stud portion and the socket portion are formed by integrally molding the terminal board, and the fitting accuracy of the snap terminal is substantially determined by the dimensional accuracy of the stud portion and the socket portion, it is possible to obtain a good product with little variation.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view showing the structure of a conventional dry battery snap terminal, Figure 2A is a perspective view of the snap terminal according to this invention, Figure B is a plan view thereof, Figure C is a sectional view thereof, and Figure 3 A and B are diagrams showing the shape of the metal piece on the stud side, Figure 4 A, B, and C are diagrams showing the shape of the metal piece on the socket side, and Figure D is a sectional view showing the state of attachment of the metal piece in Figure 4 C. It is. 10...Terminal board, 11...Cylindrical part, 12...
Through hole, 13...Cylindrical part, 13a-13d...Socket piece, S...Slit, 14a, 14b...Through hole, 15...Metal piece, 15a...Top flange,
17...Metal piece.

Claims (1)

[Claims for Utility Model Registration] A dry battery snap terminal consisting of a terminal board 10, metal pieces 15 and 17, and a lead plate 16, wherein the terminal board 10 is made of synthetic resin and has a circular through hole 12. A cylindrical portion 11 integrally protrudes from the periphery of the through hole 12, slit-like through holes 14a and 14b divided in the circumferential direction, and a cylindrical portion 11 integrally protruded from the periphery of the slit-like through holes 14a and 14b. The metal pieces 15 and 17 have one metal piece 15 in the shape of an eyelet or a hollow rivet, and the other metal piece 17 in the shape of a plate. , the metal piece 15 is inserted into the cylindrical part 11 of the terminal board 10, the upper end side is caulked to the upper end of the cylindrical part 11, and the lower end side is inserted into the terminal board 10 with the lead plate 16 interposed therebetween. The metal piece 17 is caulked to the lower surface of the stud terminal A, and the metal piece 17 is connected to the slit-shaped through hole 14.
a, 14b, and insert the socket piece 13
a, 13b, 13c, 13d so that the upper end side covers the inner surface and upper surface of the socket pieces 13a, 13d.
A snap terminal for a dry battery, characterized in that it is caulked to the upper ends of the terminals 13b, 13c, and 13d, thereby forming a socket terminal B.