JPH04109579A - Terminal metal fitting and manufacture thereof - Google Patents

Abstract

PURPOSE:To reduce the abrasion and damage of a metal mold used for punching slits by making the space between the contact slits of a contact plate portion larger than the thickness of a male tab terminal which is inserted into the contact slits. CONSTITUTION:Terminal metal fittings A are formed by punching and bending of a metal plate by use of a metal mold and the space G between the contact slits 3,3' of each of the metal fittings A is twice the thickness of the metal plate and larger than the plate thickness S of the male tab terminal C of a fuse B. The spaces G, G between the contact slits 3,3' are formed with a center offset X between them and therefore the distance obtained by subtraction of the center offset X from the space G is equal to the space G' for inserting the male tab terminal C and is a little smaller than the plate thickness S of the male tab terminal C. The fuse B is inserted into a fuse box provided with the terminal metal fittings A, A and in this case the inner contact face 3a of the contact slit 3 which forms the space G' for insertion first makes contact with one side of the male tab terminal C and then the inner contact face 3a' of the contact slit 3' of a contact plate portion 2' which forms the space G' for insertion makes contact with the other side of the male tab terminal C whereby the fuse B is fixed to the metal fittings A, A.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a terminal fitting used in electrical components of automobiles and the like.

[Conventional technology]

In Fig. 4, the terminal fitting a is formed by punching and bending a metal plate material, and a contact plate portion C that stands up on the base plate has a clamping slit C+ cut from the upper end and a wide cutout portion C2. ing.

The terminal fitting a is assembled into an electrical connection box or the like, and a male tab terminal d of a fuse d or the like is received in the holding ring) at.

As shown in FIG. 5, the clamping slit C1 is
It is formed by punching out the metal plate material a' placed on top with a punch f, and usually the radius 1 of the clamping slit CI is designed to be smaller than the plate thickness of the mating tab terminal and about 7!202 times the plate thickness. , when the width 11 of the holding slit is smaller than the plate thickness 12 (when the plate thickness of the mating male tab terminal is smaller than the plate thickness 12 of the metal plate material a'), the width r1' of the punch f is also the plate thickness 7! 2, the punch is therefore more likely to wear and break, and the life of the mold is significantly shortened.

[Problem to be solved by the invention]

The present invention has been made by focusing on the above-mentioned points, and the present invention has been made by using a holding slit for the male tab terminal as a contact slit with a gap larger than the plate thickness of the male tab terminal, and a male terminal having a relatively small plate thickness. This enables connection, thereby solving problems in manufacturing and use.

[Means to solve the problem]

In order to achieve the above-mentioned object, in the present invention, a contact slit is formed from the tip of a pair of contact plate parts that stand up opposite each other on both sides of a base plate part, and the center of the pair of contact slits is formed. Forming an insertion gap for the mating male terminal that is smaller than the gap between the contact slits by shifting them from each other, and bringing only one inner surface of the pair of contact slits involved in forming the insertion gap into contact with the male terminal. A pair of contact plate parts and a substrate part, each having a contact slit with a gap larger than the thickness of the metal plate material, are punched out using a mold, and the pair of contact plate parts are used as a substrate part. It is characterized by being more upright and having the centers of the contact slits facing each other evenly.

〔Example〕

In FIG. 1, A, A are terminal fittings according to the present invention, B
is a fuse connected to the terminal fittings A, A, and has male tab terminals C, C.

The terminal fittings A are opposite to each other on both sides of the board part 1, and are connected to contact plate parts 2,
2' is erected, and each contact plate part 2, 2' is formed with a contact slit 3, 3' from the tip and a wide notch 4, 4' continuous to the contact slit 3, 3'. There is.

The terminal fitting A is formed by punching and bending a metal plate using a die, and has contact slits 3, 3'.
The gap G is about twice the thickness T of the metal plate material, and is larger than the thickness S of the male tab terminal C of the fuse B.

The gaps G and G of the contact slits 3.3' are formed with a mutual center deviation X, and therefore, the remainder after subtracting the center deviation X from the gap G becomes the insertion gap G' for the male tab terminal C. This is formed to be slightly smaller than the plate thickness S of the male tab terminal C.

The fuse B is inserted into a fuse box or the like (not shown) provided with the terminal fittings A, The contact plate part 2 contacts one side of the terminal C.
The contact inner surface 3a' forming the insertion gap G' in the contact slit 3' is fixed in contact with the other side surface of the male tab terminal C, and the other inner surface 3 in the contact swan 3.3'
b.

3b' is in a non-contact state with the male tab terminal C and performs a heat dissipation function.

〔Effect of the invention〕

As described above, in the present invention, the gap between the contact slits in the contact plate portion is formed to be larger than the thickness of the male tab terminal inserted into the contact slits, so that wear of the mold used for punching the slits is avoided. In addition, the non-contact inner surface of the contact slit can be used as a heat dissipation surface.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of the present invention, Fig. 2 is a plan view of the same, Fig. 3 is a side view of the same, Fig. 4 is a perspective view of a conventional example, and Fig. 5 is a manufacturing of the same. FIG. A...Terminal fitting, 2, 2'...Contact plate part, 3, 3'
...Contact slit, 3a, 3a'...Contact inner surface. Patent applicant: Yazaki Sogyo Co., Ltd. Figure 1 ＼ Figure 5 G゛G゛-・Yuji 5! /l Kamiiri Akima Figure 2 Figure 4

Claims (2)

[Claims] (1) Contact slits are formed from the tips of a pair of contact plate sections that stand up opposite each other on both sides of the substrate section, and the centers of the pair of contact slits are shifted from each other so that the center of the contact plate sections is shifted from the center of the contact slits. A terminal fitting characterized in that a small insertion gap for a mating male terminal is formed, and only one inner surface of the pair of contact slits involved in forming the insertion gap is brought into contact with the male terminal. (2) A pair of contact plate parts and a substrate part each having a contact slit with a gap larger than the thickness of the metal plate material are punched out with a mold, and the pair of contact plate parts are made to stand up from the base part. A method for manufacturing a terminal fitting, characterized in that the centers of the respective contact slits are shifted from each other so as to face each other.