JP2001068172A - Socket terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a socket terminal capable of suppressing temperature rise. SOLUTION: This socket terminal 3 to be connected to square pin-shaped plug terminals 10, 11 has a contact part 1 on the tip side coming in contact with the plug terminals 10, 11 at the tip of a crimping part L to be crimped to a conducting part 5b of a cable 3 and a contact part 2 on the inside arranged in the extending direction of the plug terminals 10, 11. A heat radiating hole 3d is installed in a common base part 3c under the contact part 2 on the inside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a socket terminal of a connector including a plug and a socket.

[0002]

2. Description of the Related Art Conventionally, a contact portion of a socket terminal with a square pin-shaped plug terminal has a two-point contact structure in which the plug terminal is elastically pressed from both sides of the plug terminal (in reality, each point has a certain spread. Is a partial surface with).

[0003]

However, in such a conventional structure, since the current value flowing through the connector becomes large due to the two-point contact, heat is generated in the contact portion due to a small contact area, so that the contact portion is heated. The temperature near the part rises beyond the allowable range.

Therefore, an object of the present invention is to provide a socket terminal capable of suppressing a rise in temperature.

[0005]

SUMMARY OF THE INVENTION To achieve the above object, the present invention relates to a socket terminal to be connected to a square pin-shaped plug terminal, wherein the plug terminal is brought into contact with the tip of a crimping portion for crimping a conductive portion of an electric wire. The contact portion 1 on the distal end side and the contact portion 2 on the inner side are juxtaposed in the extension direction of the plug terminal. The two juxtaposed contact portions can make four-point contact (four-part surface contact), and can suppress a temperature rise even when a larger current flows.

Further, the contact portion 1 and the contact portion 2 are formed independently from each other from both sides of the common base of the socket terminal so as to increase the heat radiation effect and to increase the four points (four parts). Surface) can be surely contacted.

If a heat radiating hole is provided in the common base below the inner contact portion 2, the heat radiating effect can be further increased.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view of a connector in which a socket incorporating a socket terminal and a plug according to an embodiment of the present invention are connected.

A socket terminal 3 is pushed into a groove of a housing 1a made of a resin material of the socket 1, and is set.
The electric wire 5 is fixed to this. On the other hand, square pin-shaped plug terminals 10 and 11 are inserted and fixed to the separator 7 a of the plug 7, and when the socket 1 and the plug 7 are fitted and connected, these plug terminals are in contact with the contact portions 13 of the socket terminal 3.
a, it comes into electrical contact with the contact portion 23b by pressure.

FIGS. 2 and 3 are an elevation view and a plan view, respectively, of the socket terminal 3. FIG. 4 is a side view as viewed from the direction of arrow A shown in FIG. 3, and FIGS. 8 is FIG.
Cut line BB, CC, DD, E of the plan view shown in FIG.
The sectional view along -E is shown. In the contact portion of the socket terminal 3 in the region K (FIGS. 2 and 3) on the side for receiving the plug terminals 10 and 11, the contact portion 13a and the contact portion 23b are shown in FIGS. 4 and 5 from the common base 3c. As such, it has been launched on both sides. These are formed independently and juxtaposed in the direction for receiving the plug terminals 10 and 11 (the extension direction of the plug terminals). Further, a heat radiating hole 3d is provided in the common base 3c below the contact portion 23b.

A region L is a crimping portion, which firmly holds the conductive portion 5b of the electric wire 5 (see FIG. 1) from both sides and secures contact therewith.

The area M corresponds to the holding claws 31 shown in FIGS.
The wires 31a and 31b are raised from the base 3c at right angles to the main extension direction to strongly hold the insulating coating 5a of the electric wire 5 and securely prevent the electric wire 5 from coming off.

The region N is an insulation barrel for holding the insulating coating 5a of the electric wire 5. Both sides shown in FIG.
When the assembly is completed, the wire 5 is bent so as to embrace the wire 5.

The area P is a flat plate-like assembly holding section.
A notch 32 is provided at a portion connected to the common base of the region P. After the socket terminal 3 is incorporated into the groove of the housing 1a, the socket terminal 3 is cut by the notch 32. It is removed from the finished product.

Next, the assembly of the socket terminal 3 to the socket 1 and the connection with the plug 7 will be described.

The socket terminal 3 shown in FIGS.
After the region P of the socket terminal is cut by the notch 32, each of the plurality of grooves formed in the housing 1a of the socket 1 is moved from the contact portion of the region K to the common base 3c.
1 as the lower side of FIG. After that, the electric wire 5
The conductive portion 5b exposed at the tip is fitted from above in FIG. Next, the crimp portion in the region L is bent by a jig so as to surround the conductive portion. Further, the insulation barrel in the region N is bent by a jig so as to surround the insulating coating 5a of the electric wire 5. Thus, the electric wire is fixed to the socket terminal 3. Electric wire 5
Each of the socket terminals 3 is fixed. In the case where the electric wire 5 is a flat cable in which a plurality of electric wires are integrated by joining insulation coatings, the above operation for fixing the electric wires is performed collectively as an electric wire table including the plurality of electric wires.

As described with reference to FIG.
Is fitted and coupled with the socket 1, the socket terminals 3
Contact portion 13a and contact portion 23b of plug terminal 10
(Or 11). The contact portion 13a
The two portions of the plug terminal 10 (or 11) and the contact portion 23b similarly contact the two portions of the plug terminal 10 (or 11). Therefore, for each of the plug terminals, 4
Partial surface contact can be ensured, and a connection that can withstand a larger current can be obtained.

[0019]

As described above, according to the first aspect of the present invention, by increasing the number of contact portions of the socket terminal to two, it is possible to suppress a temperature rise and endure a larger current. it can.

According to the second aspect of the present invention, by providing the contact portions independently, the heat radiation effect can be increased, and a larger current can be endured.

Further, according to the third aspect of the present invention, a heat radiating hole is provided in the common base to enhance a heat radiating effect and to endure a larger current.

[Brief description of the drawings]

FIG. 1 is a sectional view of a connector using a socket terminal according to an embodiment of the present invention.

FIG. 2 is an elevation view of a socket terminal used in FIG.

FIG. 3 is a plan view of a socket terminal used in FIG.

FIG. 4 is an enlarged side view of the left socket terminal viewed from the direction of arrow A in FIG. 3;

FIG. 5 is an enlarged sectional view taken along line BB in FIG. 3;

FIG. 6 is an enlarged sectional view taken along line CC of FIG. 3;

FIG. 7 is an enlarged sectional view taken along line DD of FIG. 3;

FIG. 8 is an enlarged sectional view taken along line EE of FIG. 3;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Socket, 1a socket housing, 3 socket terminal, 3a contact part 1, 3b contact part 2, 3c base, 3d heat radiation hole, 5 electric wire, 5a insulating coating, 5b
Conductor, 7 plug, 7a Plug separator, 1
0, 11 plug terminals, 31a, 31b clamping claws, 32
Notch, K, L, M, N, P regions.

Claims (3)

[Claims] In a socket terminal to be connected to a square-pin-shaped plug terminal, a tip-side contact portion 1 and an inner contact portion 2 that are in contact with the plug terminal are formed at the tip of a crimping portion that crimps a conductive portion of an electric wire. Socket terminals characterized in that they are juxtaposed in the extension direction of the plug terminals. 2. The socket terminal according to claim 1, wherein each of the contact portion 1 and the contact portion 2 is independently formed so as to rise from both sides from a common base of the socket terminal. . 3. The socket terminal according to claim 2, wherein a heat radiating hole is provided in the common base under the inner contact portion.