JP2842235B2 - Pressure contact terminal and electric connection box provided with the pressure contact terminal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulation displacement terminal for a motor vehicle and an electric junction box provided with the insulation displacement terminal.
A large number of fuses, electrical circuits including relays and the like are intensively arranged, and in an electrical connection box that rationally connects the wiring harnesses, in particular, without using relay terminals for the fuses and relays, etc. This is to enable electrical connection with a thick wire constituting the power supply side circuit.

[0002]

2. Description of the Related Art Conventionally, in such an electric junction box, instead of a bus bar formed by punching a conductive metal plate, an electric wire is used instead of a bus bar so as to easily cope with a design change of an internal circuit. There is provided an apparatus in which wiring is performed and connection between the electric wires and external input / output terminals and connection between the electric wires are performed by press contact terminals.

In the case where an internal circuit composed of the electric wires and the pressure contact terminals is provided, the pressure contact terminals 1 are formed by punching a conductive metal plate having a constant thickness as shown in FIG. An electric wire pressure contact portion 1b having a slot 1a of
A tab-shaped male terminal portion 1c is provided above the wire press-contact portion 1b. The press contact terminal 1 has the above-mentioned slot 1a fitted to the electric wire 2 laid inside the case 3, cuts off the insulating coating 2a of the electric wire 2, and connects it to the core wire 2b. The terminal 1c is electrically connected to a tab-shaped terminal 4 such as a relay or a fuse attached to the case 3 via a relay terminal 5 having female terminals at both ends.

[0004]

As described above, since the terminal portion 1c of the press contact terminal 1 is a tab-shaped male type, it can be directly connected to the tab-shaped terminal 4 such as a fuse or a relay. However, since it is necessary to interpose the relay terminal 5 as described above, there are various problems such as an increase in the height of the connection portion and an increase in the size of the electric connection box.

On the other hand, as shown in FIG. 5, a central board 1d protrudes from the wire press-connecting section 1b, and curl portions curving inwards from both sides of the central board 1d. 1e, the terminal portion 1c 'is formed in a female type, and the tab-like male terminal 4 is inserted and held between the curled portion 1e and the central substrate portion 1d.
Can be eliminated, and the above problem can be solved. However, the circuit connected to the relay or the fuse is usually on the side of a power supply circuit through which a large current flows, and a large-diameter thick electric wire must be used when the circuit is constituted by electric wires instead of bus bars. Therefore, it is necessary to increase the thickness and the strength of the press contact terminal that is press-connected to the thick wire, and also to increase the contact area. However, it is difficult to form the curved curl portion 1e unless it is thin (about 4 mm). Therefore, in the press contact terminal for a thick electric wire, the curl portion 1e cannot be provided to form a female terminal portion, and the relay terminal has to be interposed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and in an electric junction box for rationally connecting a wiring harness, a circuit on a power supply side without using a relay terminal for a fuse, a relay, or the like. It is an object of the present invention to provide a crimp terminal that can be crimped and connected to a thick electric wire forming the above and an electric junction box provided with the crimp terminal.

[0007]

In order to achieve the above object, according to the present invention, in the first aspect, a wire press-contact portion is formed by increasing the thickness of one side in the up-down direction of a conductive metal plate. At the same time, the input / output terminal portion is formed by reducing the thickness of the other side portion, and the wire press-contact portion is provided with a slot of a leading end opening that cuts the insulating coating of the wire and comes into contact with the core wire, and the input / output terminal The portion is provided with curled portions curved inwardly closer to each other from the left and right ends of the central substrate portion extending from the electric wire pressure contact portion, and a tab is provided between the curled portions on the left and right sides and the central substrate portion. An object of the present invention is to provide a press contact terminal which is a female terminal portion for inserting and holding a male terminal in a shape of a circle.

[0008] The above-mentioned wire press-contact portion has a large plate thickness for thick wire press-contact, and the plate thickness of the input / output terminal portion extending from the wire press-contact portion is approximately 1/2 of the plate thickness of the wire press-contact portion. I have.
(Claim 2)

According to a third aspect of the present invention, there is provided a curled portion in which a wire pressing portion having a large thickness is provided on one side and the thickness is reduced on the other side and curved inward from both left and right sides. A press-fit terminal provided with a female input / output terminal portion, and press-connecting the wire press-contact portion of the press-contact terminal to the electric wire wired in the case, and a female input-output terminal portion at the other end of the press-contact terminal. The present invention provides an electric connection box provided with a press contact terminal connected to a case without inserting a fuse and / or a tab-shaped male terminal of a relay attached to a case without a relay terminal.

The press contact terminal is connected to a thick electric wire and / or a thin electric wire inserted into a wiring groove formed in an insulating plate disposed inside the case by pressing the electric wire press contact portion. . (Claim 4)

[0011]

According to the pressure contact terminal of the first and second aspects of the present invention, the wire pressure contact portion having a large thickness is press-fitted into a thick wire, and the insulation coating of the wire is cut by the edge of the slot. Then, the inner peripheral surface of the wire pressure contact portion and the outer peripheral surface of the core wire are brought into contact with each other to perform pressure welding connection. On the other hand, a tab-shaped male terminal such as a fuse can be press-fitted into a female input / output terminal portion composed of a central substrate portion and a curl portion that are continuous with the wire pressure contact portion, and a fuse or the like can be connected.

Further, according to the third and fourth aspects of the present invention, an electric junction box having the above-described press-connecting terminal has the following features.
A thick electric wire and / or a thin electric wire are laid in advance on an insulating plate housed in a case constituting an electric junction box, and press-fit terminals are press-fitted into these electric wires and attached. Thereafter, by attaching a fuse or a relay from the outside of the case, these tab-shaped male terminals are directly connected to the input / output terminal portion of the press-connecting terminal. in this way,
Since the insulation displacement terminal can be directly connected to the fuse and the relay without using the relay terminal, the height of the electric connection box is reduced and the size can be reduced.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to embodiments shown in the drawings. FIG. 1 shows a wiring groove 13 of an insulating plate 13 interposed inside an electric junction box composed of an upper case 11 and a lower case 12 using a pressure contact terminal 10 according to the present invention.
and the fuse 1 attached to the fuse accommodating portion 11a formed on the outer surface of the upper case 11.
4 is directly connected without the relay terminal 5 shown in the conventional example. In the electric connection box, the power supply side circuit is configured by the press contact terminal 10 and the thick wire 15,
It is connected to the fuse 14 via the press contact terminal 10.

The press contact terminal 10 for a thick wire is shown in FIG.
(A) As shown in (B) and (C), a conductive metal plate is punched out in a shape in which a female input / output terminal portion 10b is continuous above the wire press-contact portion 10a, and then curved as shown in the drawing. It is formed. The wire pressure contact portion 10a has a large thickness,
The lower end is provided with a slot 10c having an opening at the end for cutting the insulating coating 15a of the thick electric wire 15 and making contact with the core wire 15b. The slot 10c is formed by cutting from the lower end at the center in the width direction, and is provided with a tapered portion 10c-1 which is inclined to open outward on both sides of the lower end.
And a linear portion 10c-2 is provided continuously with the linear portion 1c.
A bulged circular portion 10c-3 is provided at the upper end of 0c-2. The interval between the straight portions 10c-2 is set to be equal to or less than the diameter of the core wire 15b of the thick electric wire 15, and the circular portion 10c-3 is formed.
Are formed to have substantially the same diameter as the core wire 15b. The input / output terminal portion 10b is a female type including a central substrate portion 10d and a curled portion 10e, and a tab-shaped male terminal 14a of the fuse 14 is inserted and held between the female terminal portion and the curl portion 10e.

The input / output terminal portion 10b is a wire press-contact portion 10a.
The thickness T1 is approximately に 対 し て of the thickness T1, and the central substrate portion 10d is provided to extend from the upper end of the wire press-contact portion 10a, and is closer to the left and right sides of the central substrate portion 10d. The curl portion 10e is provided by being curved inward. The curl portion 10e has elasticity, and the gap between the tip portion 10e-1 and the central substrate portion 10d is smaller than the thickness of the male terminal 14a of the fuse 14.
The continuous portion of the wire press-contact portion 10a and the central substrate portion 10d is configured to become gradually thinner upward. In this embodiment, the thickness T1 of the wire press-contact portion 10a is set to 8 mm, and the thickness T2 of the central substrate portion 10d and the curl portion 10e is set to 4 mm.

A thin wire (not shown) is used for the load side circuit, and when a female terminal is inserted into the connector to be connected, the same press contact terminal 1 as the conventional one shown in FIG. 4 is used. When a male terminal is inserted into a connector to be connected, a press contact terminal having a female terminal portion formed by providing a curl portion in the same manner as the press contact terminal 10 with a thin and constant thickness shown in FIG. The thin electric wire and the male terminal connected to the load-side electric wire can be directly connected without using a relay terminal similarly to the power supply side circuit.

The electric connection box shown in FIG. 1 has a thick electric wire 15 laid in advance in a wiring groove 13a of an insulating plate 13 housed therein.
The upper case 11 and the lower case 12 are assembled to the insulating plate 13 in this state, and at the same time as this assembling, the electric wire press-fitting portion 1 of the crimp terminal 10 is attached.
0a and the thick electric wire 15 are connected by pressure welding.

The press contact between the press contact terminal 10 and the thick wire 15 is performed by forming the wire press contact portion 10a thick.
When the straight portion 10c-2 of the slot 10c passes through the thick electric wire 15, the insulating coating 15a is surely cut, and FIG.
As shown in FIG. 7, the core wire 15b is held by the circular portion 10c-3, and the outer peripheral surface of the core wire 15b is in contact with the inner peripheral surface of the circular portion 10c-3, so that the electrical connection is made reliably.

Also, the upper case 11 and the lower case 1
2, the female input / output terminal portion 10b of the press contact terminal 10 protrudes from the fuse accommodating portion 11a formed on the outer surface of the upper case 11, and the male terminal 14a of the fuse 14 is connected to the terminal portion 10b. Connected directly. That is, the male terminal 14a of the fuse 14 is press-fitted between the curled portion 10e of the press contact terminal 10 and the central substrate portion 10d, thereby pushing the curled portion 10e outward to expand and press-connect these gaps.

As described above, since the press contact terminal 10 is provided with the wire press contact portion 10a having a large plate thickness, even the thick wire 15 can cut the insulating coating 15a and securely connect to the core wire 15b. In addition, since the thickness of the input / output terminal portion 10b is made small, the curled portion 10e curved as described above can be provided to form the terminal portion 10b into a female mold. As described above, it is possible to connect to the fuse 14 without using the relay terminal 5.

[0021]

As is apparent from the above description, according to the pressure contact terminals of the first and second aspects of the present invention, the thickness is provided with a large or small plate, and the thickness of the input / output terminal portion is reduced. Therefore, it is possible to provide a curled portion, a female terminal portion including a central substrate portion and a curled portion can be formed, and a tab-shaped male terminal can be connected without a relay terminal. On the other hand, since the thickness of the wire pressure contact portion is made large, it can be used as a pressure contact terminal for a thick wire, and electrical connection with the thick wire can be reliably achieved.

Also, as in claims 3 and 4,
According to the electric connection box having the press contact terminals, a tab-like male terminal such as a fuse or a relay can be directly connected to the female electric wire press contact portion. Can be eliminated. Therefore, by using the relay terminal, the height of the connection portion becomes large,
This has the advantage that problems such as an increase in the size of the electric connection box can be prevented.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a main part of an electric junction box provided with a press contact terminal of the present invention.

2 (A) is a plan view, FIG. 2 (B) is a front view, and FIG. 2 (C) is a sectional view taken along line II of FIG. 2 (B).

FIGS. 3A and 3B are schematic diagrams showing a connection state between a press contact terminal, a male terminal of a fuse, and an electric wire.

FIG. 4 is a sectional view showing a conventional electric junction box.

FIG. 5 is a perspective view showing another conventional pressure contact terminal.

[Explanation of symbols]

 Reference Signs List 10 pressure contact terminal 10a wire pressure contact portion 10b input / output terminal portion 10c slot 10d central board portion 10e curl portion 13 insulating plate 14 fuse 14a male terminal 15 electric wire (thick electric wire) T1 thickness of wire pressure contact portion T2 thickness of input / output terminal portion Board thickness

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yoshito Oka 1-114, Nishisuehiro-cho, Yokkaichi-shi, Mie Sumitomo Wiring Systems, Ltd. (72) Inventor Seimi Kobayashi 1-114, Nishisuehiro-cho, Yokkaichi-shi, Mie Sumitomo Wiring Systems (72) Inventor Nori Inoue 1-114, Nishisuehiro-cho, Yokkaichi-shi, Mie Sumitomo Wiring Systems, Ltd. (58) Field surveyed (Int.Cl. ⁶ , DB name) H01R 4/24 H02G 3/16

Claims (4)

(57) [Claims] 1. An input / output terminal portion comprising a conductive metal plate, wherein the thickness of one side portion in the vertical direction is increased to form a wire pressure contact portion, and the thickness of the other side portion is reduced to form an input / output terminal portion. The wire press-contact portion is provided with a slot of a leading end opening that cuts the insulation coating of the wire and comes into contact with the core wire, while the input / output terminal portions are mutually separated from both left and right sides of a central board portion extending from the wire press-contact portion. A press contact terminal having a curl portion curved inwardly adjacent to the female terminal portion for inserting and holding a tab-shaped male terminal between the curl portions on the left and right sides and the central substrate portion. 2. The electric wire pressure contact portion has a large thickness for pressure welding of a thick wire, and the thickness of an input / output terminal portion extending from the electric wire press contact portion is approximately 1 / th of the thickness of the electric wire press contact portion. 2. The press contact terminal according to claim 1, wherein the pressure contact terminal is 2. 3. A female input / output terminal portion is provided by a curled portion having a thin plate thickness on one side and a thin plate thickness on the other side and inwardly curved from both right and left sides. The press-connecting terminal provided is used to press-connect the wire press-contact portion of the press-contact terminal to the wire wired in the case, and the female input / output terminal portion at the other end of the press-contact terminal has a fuse attached to the case and / or An electrical junction box equipped with a press-contact terminal to which a tab-shaped male terminal of a relay is inserted and connected without going through a relay terminal. 4. A thick electric wire inserted into a wiring groove formed in an insulating plate disposed inside the case,
The electric connection box according to claim 3, wherein the electric wire connection portion is connected by press-contacting the wire press-contact portions.