JPH10241769A - Connection terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection terminal which can reduce electrical contact resistance as much as possible by enlarging an area which makes contact with male connectors. SOLUTION: For a connect terminals 1, where a slit for a contact 3 of an inverted Ω-shaped is formed from the tip at a contact spring part 2, and male terminals 11 and made to respectively contact on both sides of a narrow part 3a of this slit 3 so as to make contact, a pair of sub-contact spring parts 4, 4 is projectingly installed at the positions respectively opposite to the slit for the contact 3 on both sides of the contact spring part 2. The male terminals 11 are made to be easily inserted or removed between this pair of sub-contact spring parts 4, 4. Moreover, each of contacting parts of the pair of sub-contact spring parts 4, 4 with the male terminals 11 is formed curved outwards.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection terminal for use in, for example, electrical components of an automobile, and more particularly to a contact resistance reduction type suitable for connecting a male terminal of a mini fuse or a blade type fuse. Related to the connection terminal.

[0002]

2. Description of the Related Art Conventionally, there has been known a connection terminal for connecting a male tab terminal of a mini fuse incorporated in an electric connection box or the like. This will be described in detail with reference to FIG. 5. Reference numeral 1 'denotes a pair of male tab terminals (male terminals) of the mini fuse 10.
A connection terminal for connecting one of 11 and 11. The connection terminal 1 'is formed in the shape of an L-shaped rectangular metal plate, and its upright portion is a contact spring portion 2'. An inverted Ω-shaped contact slit 3 is formed from the tip to the center of the contact spring portion 2 '. On the upper sides on both sides of the contact slit 3, wide surfaces 11a, 11 on both sides of the male tab terminal 11 are provided.
a is formed to have a narrow portion 3a for making contact with each other.

Then, as shown by an arrow A in FIG. 5, one male tab terminal 11 of the mini fuse 10 is inserted so as to be sandwiched in the contact slit 3 of the contact spring portion 2 'of the connection terminal 1'. The wide surfaces 11a, 11a on both sides of the one male tab terminal 11 come into contact with the opposite protruding surfaces of the narrow portion 3a of the contact slit 3, respectively.

A similar technique relating to the connection terminal 1 'is disclosed in Japanese Utility Model Laid-Open No. 4-49475.

[0005]

However, in the conventional contact terminal 1 ', the wide surfaces 11a, 11a on both sides of the male tab terminal 11 of the mini fuse 10 are connected to the contact slit 3'.
Are connected at two opposing narrow protruding surfaces of the narrow portion 3a, so that there is a disadvantage that their contact area is reduced and the electrical contact resistance is increased.

Accordingly, the present invention has been made to solve the above-mentioned problem, and an object of the present invention is to provide a connection terminal capable of increasing a contact portion with a male terminal and reducing a contact resistance as much as possible. To provide.

[0007]

According to a first aspect of the present invention, an inverted Ω-shaped contact slit is formed at a contact spring portion from a tip thereof.
In a connection terminal in which male terminals are brought into contact with both sides of the narrow portion of the contact slit, a pair of auxiliary contact spring portions are protruded at positions opposite to the contact slit on both sides of the contact spring portion. The male terminal is detachably inserted between the pair of auxiliary contact spring portions in a contact state.

In this connection terminal, the contact portion (contact area) with the male terminal can be increased as compared with the conventional one, so that the contact resistance can be reduced as much as possible. Can be prevented.

According to a second aspect of the present invention, there is provided the connection terminal according to the first aspect, wherein portions of the pair of auxiliary contact spring portions that come into contact with the male terminals are formed to be curved outward.

With this connection terminal, the male terminal can be smoothly inserted into the contact slit side, and the male terminal can be reliably positioned at the contact position.

According to a third aspect of the present invention, there is provided the connection terminal according to the first or second aspect, wherein the pair of auxiliary contact spring portions are bent and formed integrally with the contact spring portions, respectively.

With this connection terminal, the auxiliary contact spring portion can be easily formed, and the number of parts can be reduced and the cost can be reduced.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 and 3 are a perspective view and a front view showing a mini fuse and a blade fuse having a connection terminal and a mating male terminal according to an embodiment of the present invention. The connection terminal 1 is a male tab terminal 11 of a pair of male tab terminals (male terminals) 11 of the mini fuse 10 shown in FIGS.
And one of the male tab terminals 21 of the pair of male tab terminals (male terminals) 21 and 21 of the blade type fuse 20 shown in FIG. It is formed in. The vertical upright portion of the connection terminal 1 is a contact spring portion 2, and a reverse Ω-shaped contact slit 3 is formed from the tip to the center of the contact spring portion 2.
On the upper sides on both sides of the contact slit 3, wide surfaces 11a, 11a and 21 on both sides of the one male terminal 11, 21 are provided.
a, a narrow portion 3a for making contact with each other is formed.

As shown in FIGS. 1 to 3, a pair of auxiliary contact spring portions 4 and 4 are formed integrally at positions opposed to the contact slits 3 on both sides substantially at the center of the contact spring portion 2 by bending. I have. That is, as shown in FIG. 4, the pair of auxiliary contact spring portions 4 and 4 are formed by punching a conductive metal plate into a predetermined shape through a processing means such as a punch, and then changing the portion indicated by the dotted line B in an alternate direction. It is formed by bending each at a right angle, and further bending the portion indicated by the dotted line C at a right angle to the contact slit 3 side. The portions of the pair of auxiliary contact spring portions 4 and 4 that come into contact with the male terminals 11 and 21 are curved portions 4a that are curved outward.
It has become. Between the curved portions 4a of the pair of auxiliary contact spring portions 4, 4, the narrow surfaces 11b, 11b and 21b, 21b on both sides of the male terminals 11, 21 are detachably inserted in a contact state.

According to the connection terminal 1 of the above embodiment, FIG.
As shown by an arrow A, when one male tab terminal 11 of the mini fuse 10 is inserted so as to be sandwiched in the contact slit 3 of the contact spring portion 2 of the connection terminal 1, the one male tab terminal 11 The wide surfaces 11a, 11a on both sides are respectively contacted and connected to opposing protruding surfaces of the narrow portion 3a of the contact slit 3, and the narrow surfaces 11b, 11b on both sides of the one male tab terminal 11 are connected. A pair of auxiliary contact spring portions 4 and 4
Of the respective curved portions 4a in contact with each other. Also, as shown in FIG. 3, the connection terminal 1 and the male tab terminal 21 of the blade fuse 20 are connected in the same manner, so that the connection terminal 1 has high versatility.

As described above, the male terminals 11 and 21 are brought into contact with both sides of the narrow portion 3a of the contact slit 3 of the contact spring portion 2 and opposed to the contact slits 3 on both sides of the contact spring portion 2 respectively. The contact point between the connection terminal 1 and each of the male terminals 11 and 21 is twice as large as that of the conventional one because the contact between the curved portions 4a of the pair of auxiliary contact spring portions 4 and 4 protruded at the position where the contact is made. Thus, the contact area can be increased accordingly and the contact resistance can be reduced as much as possible. Also,
It is possible to reliably prevent backlash of the male terminals 11 and 21 in the contact state. Further, since the curved portions 4a are formed at the portions of the pair of auxiliary contact spring portions 4 and 4 that contact the male terminals 11 and 21, the male terminals 11 and 21 are smoothly inserted into the contact slits 3. Be able to
The male terminals 11 and 21 can be reliably positioned at the contact positions. Furthermore, a pair of auxiliary contact spring portions 4, 4
Since a is bent and formed integrally with the contact spring portion 2, the pair of auxiliary contact spring portions 4 and 4 can be easily formed, and the number of parts can be reduced and the cost can be reduced.

According to the above embodiment, the connection terminal used for the mini fuse or the blade type fuse has been described. However, the embodiment can be applied to other electrical components such as a relay. Of course.

[0019]

As described above, according to the first aspect of the present invention, an inverted Ω-shaped contact slit is formed at the contact spring portion from the tip, and the contact slits on both sides of the contact spring portion are formed respectively. A pair of auxiliary contact springs are protruded at opposing positions, and the male terminal is made detachable in a contact state between the pair of auxiliary contact springs, so that the contact area with the male terminal is made larger than that of the conventional one. And the contact resistance can be reduced as much as possible. As a result, it is possible to reliably prevent the male terminal from rattling in the contact state.

According to the invention of claim 2, the male terminal can be smoothly inserted into the contact slit side, and
The male terminal can be reliably positioned at the contact position.

According to the third aspect of the present invention, a pair of auxiliary contact spring portions can be easily formed on both sides of the contact spring portion, and the number of parts and cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a mini-fuse provided with a connection terminal and a mating male terminal according to an embodiment of the present invention.

2A is a side view showing a connection state between the connection terminal and the male tab terminal of the mini-fuse, and FIG. 2B is a front view showing the connection state.

FIG. 3 is a front view showing a connection state between the connection terminal and a male tab terminal of a blade type fuse.

FIG. 4 is an explanatory diagram of a conductive metal plate before forming the connection terminals.

FIG. 5 is a perspective view showing a miniature fuse having a conventional connection terminal and a male tab terminal connected to the connection terminal.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connection terminal 2 Contact spring part 3 Contact slit 3a Narrow part 4,4 A pair of auxiliary contact spring parts 11,21 Male terminal (male tab terminal)

Claims (3)

[Claims] 1. A connection terminal in which an inverted Ω-shaped contact slit is formed in a contact spring portion from a tip thereof, and male terminals are respectively contacted on both sides of a narrow portion of the contact slit. A pair of auxiliary contact spring portions projecting at positions opposite to the contact slits on both sides of the portion, and the male terminal can be inserted and removed in a contact state between the pair of auxiliary contact spring portions. Connection terminal. 2. The connection terminal according to claim 1, wherein portions of the pair of auxiliary contact spring portions that contact the male terminal are curved outward. 3. The connection terminal according to claim 1, wherein the pair of auxiliary contact spring portions are formed integrally with each other by bending the pair of auxiliary contact spring portions with respect to the contact spring portion.