JPH0865857A - Wiring circuit for electric connection box and method and equipment for forming wiring circuit - Google Patents

Abstract

PURPOSE: To attain safety and low cost, and to improve the degree of freedom of the place of the cutting of a wire. CONSTITUTION: The unnecessary section of a wire 4 laid in a case is cut at one place while each cut end section 4b, 4c is bent in the opposite directions. A separator section inserted between each cut end section 4b, 4c of the wire 4 is mounted on the case. Edge sections 11b, 12b cutting the wire 4 from both sides and bending sections 11d, 12d bending each cut end section 4b, 4c in the opposite directions at the same time as cutting are installed as a cutter.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring circuit for an electric junction box for an automobile, a method for forming the circuit, and a method for forming the circuit.
More specifically, in a wiring circuit in which an internal circuit of an electric junction box is formed by an electric wire and a pressure contact terminal, the electric wire is divided easily for each circuit.

[0002]

2. Description of the Related Art Conventionally, in this type of electric junction box, electric wires are replaced by a bus bar formed by punching a conductive metal plate so as to easily cope with a design change of an internal circuit. It has been proposed that the wire is connected to the external output terminal and the wires are connected to each other by a pressure contact terminal. In general, the electric wire is laid out at once from the start point to the end point in a case in a single stroke in a case, and then an unnecessary portion is cut off to be divided into circuits.

However, in the above-mentioned wiring method, as shown in FIG. 5, both ends P1 and P2 of an unnecessary portion of the electric wire W'indicated by hatching in the figure are cut to separate the electric wire W from the required one. ,
Therefore, it is necessary to cut at two unnecessary points. As a result, as the number of unnecessary electric wires increases, the cutting work time becomes longer and the work efficiency deteriorates. Further, a mechanism for removing the cut unnecessary electric wire is required, which increases the cost of the device.

Therefore, as shown in FIG. 6 (A), the pressure contact terminals 3 and 3 are made to protrude from the connector receiving portion 2 provided on the inner surface of the insulating support 1 to connect the electric wire W to the pressure contact terminals 3 and 3. 6 (B), the unnecessary portion W ′ of the electric wire W is cut by a cutter (not shown), and the cut ends of the electric wire W facing each other are pressed. By bending W1 and W2 downward with the press-fitting jig 5 and press-fitting them into the wire holding groove 6 of the connector receiving portion 2 as shown in FIG. 6 (C),
It has been proposed that the cut ends W1 and W2 are isolated from each other. (See JP-A-5-2276313)

[0005]

However, in the above method, the step of cutting the electric wire W and the cutting end portions W1 and W are performed.
In addition to the two steps of press-fitting 2, the electric wire holding groove 6 needs to be provided in the connector receiving portion 2, resulting in an increase in cost, and the cut portion of the electric wire W is located at the place where the electric wire holding groove 6 is provided. There is a problem of being limited.

The present invention has been made to solve the above problems, and is a method and an apparatus for forming a wiring circuit of an electric junction box which is safe and inexpensive, and which improves the degree of freedom of a cut point of an electric wire, and the method. It is an object of the present invention to provide a wiring circuit formed by.

[0007]

In order to achieve the above object, the present invention according to claim 1 is characterized in that the internal circuit of the electric connection box is composed of an electric wire and a pressure contact terminal pressed against the electric wire. Disclosed is a wiring circuit for an electrical junction box, characterized in that the circuit is divided at one cut portion, and the cut ends of the electric wires of the cut portion are bent in opposite directions.

Further, in claim 2, between the cut ends,
The wiring circuit according to claim 1, wherein a separator portion protruding from a case or an insulating plate of the electric connection box is interposed. That is, when the electric wire is laid along the wiring groove formed on the insulating plate, the separator portion projecting on the inner surface of the case is interposed between the cut ends of the electric wire. On the other hand, when the wires are laid along the inner surface of the case, the separator portion protruding toward the insulating plate is interposed at the cut end of the electric wire.

Further, the present invention provides a method of forming a wiring circuit in a case of an electric junction box according to claim 3, wherein the electric wire laid in the case is cut to divide it into circuits. Then, there is provided a method for forming a wiring circuit of an electrical junction box, which is characterized in that the cut ends that are opposed to each other at the same time by the cutting are bent in opposite directions.

Further, according to the present invention, in claim 4, there is provided an apparatus for forming an electric wire circuit in a case of an electric connection box, which comprises a blade portion for cutting the electric wire laid in the case from both sides. An apparatus for forming a wiring circuit of an electrical junction box, comprising: a bent portion that is connected to each of the blade portions and that has opposed cut ends of a cut electric wire that are opposed to each other simultaneously with cutting. are doing.

[0011]

According to the method of the present invention as set forth in claim 3, first, an unnecessary portion of the electric wire laid in the case is cut at one place, and at the same time, the cut ends are cut off.
By bending and separating in opposite directions, cutting and bending can be reliably performed in one step. Further, unlike the conventional case, the electric wire holding groove for press-fitting the cut ends is not required, so that the cost is low, and there is no restriction on the cut portion of the electric wire, and the degree of freedom is improved.

Further, according to the apparatus of the present invention as set forth in claim 4, as a cutting device, the electric wire is cut by the blade portion that cuts the electric wire from both sides, and at the same time, each cutting end is formed by the bent portion continuous to the blade portion. The parts are bent in opposite directions, and cutting and bending can be performed simultaneously only by a cutting operation.

In the wiring circuit according to claim 1, which is formed by the method according to claim 3, using the device according to claim 4,
Since the cut ends are bent in opposite directions at the cut portions for dividing each circuit, the circuit can be surely cut. In particular, when a separator is interposed between the cut ends of the electric wire as described in claim 2, short-circuiting of the cut ends can be more reliably prevented.

[0014]

The present invention will be described in detail below with reference to the embodiments shown in the drawings. It should be noted that parts having the same configurations and functions as those of the prior art shown in FIG. Figure 2
As shown in (A) and (B), the cutting device 10 for the electric wire 4 is
It is a cutting tool similar to scissors, and the inner surfaces 11a and 12a of two thick metal blade plates 11 and 12 are overlapped with each other and pivotally attached by a pin 13 so as to be opened and closed.

As shown in FIG. 3, a gap t for inserting the electric wire 4 from above is formed between the inner edges of the blade plates 11 and 12 which face each other, and the inner edges of the electric wires 4 are also formed. In this case, arc-shaped blade portions 11b and 12b are formed to cut the electric wire 4 from both sides when the pin 13 is closed. The blade portions 11b and 12b are
Unlike tools such as pliers and nippers, as shown in FIG. 1 (B), they overlap and overlap with each other.

As shown in FIGS. 2A and 2B, the outer surface 11c of the one blade plate 11 is connected to the blade portion 11b,
While forming a bent portion 11d having a quadrilateral cross section,
On the outer surface 12c of the other blade plate 12, a bent portion 12d having a quadrangular cross section is formed so as to be continuous with the blade portion 12b.

If the cutting device 10 is constructed as described above,
After moving the cutting device 10 above the unnecessary portion 4a of the electric wire 4 laid in the insulating plate 16 (see FIG. 4B) of the electric junction box 15, it is lowered as shown in FIG. Then, the gap t between the blade plates 11 and 12 is inserted into the electric wire 4 from above.

Thereafter, as shown in FIG. 1, each blade plate 11,
When 12 is closed around the pin 13, the blade 11
The electric wires 4 are cut from both sides at b and 12b. Simultaneously with this cutting, the cut ends 4b and 4c of the electric wire 4 are changed to the arrow a,
The bent portions 11d of the blade plates 11 and 12 moving in the direction of a,
By 12d, it is bent in the opposite directions b, b and comes to be isolated. Since the electric wire 4 has rigidity, when it is bent in the opposite directions as described above,
It does not return to its original straight state.

As a result, the unnecessary portion 4a of the electric wire 4 is eliminated.
At the same time that the cutting ends 11d and 12
By bending d in the opposite directions b, b and separating them,
Short-circuiting of the cut ends 11d and 12d can be prevented, and the cutting and bending steps can be reliably performed in one step. Further, since the electric wire holding groove for press-fitting the cut end portions 11d and 12d is unnecessary, the cost is low and the electric wire 4
There is no restriction on the cutting point, and the degree of freedom is improved.

As shown in FIGS. 4 (A) and 4 (B), when the insulating case 16 of the electric junction box 15 is covered with the upper case 15b from above, a separator portion 15c to be inserted between the cut ends 4b and 4c. If the upper case 15b is provided, the cut ends 4b and 4c can be reliably prevented from being short-circuited.

[0021]

As is apparent from the above description, in the method for forming a wiring circuit according to the third aspect of the present invention, the unnecessary portion of the electric wire laid in the case is cut at one place and at the same time, Since the cut ends are bent in opposite directions to be isolated from each other, cutting and bending can be reliably performed in one step. Further, since the electric wire holding groove for press-fitting the cut ends is not required, the cost is low, and there is no restriction on the cut portion of the electric wire, and the degree of freedom is improved.

According to a fourth aspect of the present invention, there is provided a wiring circuit forming apparatus, which comprises, as a cutting device, a blade portion for cutting an electric wire from both sides and a bending portion for bending each cutting end portion in opposite directions at the same time as cutting. Therefore, cutting and bending can be performed at the same time only by the cutting operation by the cutting device.

According to the wiring circuit of claim 1 of the present invention,
Although there is only one disconnection point for each circuit, the cut ends that are divided are bent in opposite directions, and the wires have rigidity and do not return to their original straight state, so the circuit is reliably Can be divided. Further, as the structure of claim 2, by interposing a separator portion to be inserted between the cut ends of the electric wires bent in opposite directions, it is possible to more reliably prevent short-circuiting of the cut ends.

[Brief description of drawings]

1A is a front view of a cutting device of the present invention during a cutting / bending operation, and FIG. 1B is a bottom view.

FIG. 2A is a front view of the cutting device of FIG. 1 in a standby state,
(B) is a bottom view.

FIG. 3 is a front view of the cutting device of FIG. 1 when the cutting device is descending.

FIG. 4 is an electrical junction box, where (A) is A-A of (B)
A line sectional view, (B) is a side sectional view.

FIG. 5 is a schematic view showing a cutting mode for cutting an electric wire, which is laid by a single stroke, in each circuit.

FIG. 6 is a cutting structure according to another conventional method,
(A) is a perspective view, (B) is a side view before press-fitting, and (C) is a side view after press-fitting.

[Explanation of symbols]

 4 Wires 4a Unnecessary parts 4b, 4c Cutting end part 10 Cutting device 11, 12 Blade plate 11a, 12a Blade part 11d, 12d Bending part 13 pin 15 Electrical connection box 15b Upper case 15c Separator part 16 Insulating plate

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuji Saka 1-14 Nishisuehiro-cho, Yokkaichi-shi, Mie Sumitomo Wiring Systems, Ltd. (72) Inventor Takahiro Onizuka 1-14 Nishi-suehiro-cho, Yokkaichi-shi, Mie Sumitomo Within Denso Co., Ltd. (72) Inventor Yoshito Oka 1-14 Nishisuehiro-cho, Yokkaichi-shi, Mie Sumitomo Denso Co., Ltd.

Claims (4)

[Claims] 1. An internal circuit of an electric junction box is composed of an electric wire and a pressure contact terminal which is pressed against the electric wire, and the electric wire is divided into circuits at one cutting portion, and the electric wire at the cutting portion faces each other. A wiring circuit for an electrical junction box, wherein the cut ends are bent in opposite directions. 2. The wiring circuit according to claim 1, wherein a separator portion protruding from a case or an insulating plate of the electrical junction box is interposed between the cut ends. 3. A method for forming a wiring circuit in a case of an electrical junction box, which comprises cutting an electric wire laid in the case to divide each circuit and simultaneously facing each other by the cutting. A method for forming a wiring circuit of an electrical junction box, characterized in that the cut ends are bent in opposite directions. 4. A device for forming an electric wire circuit in a case of an electric junction box, which comprises a blade section for cutting an electric wire laid in the case from both sides, and a cutting section connected to each blade section. An apparatus for forming a wiring circuit of an electric junction box, comprising: a plurality of bent ends of the electric wire, which are opposed to each other, and bent at the same time when the electric wires are cut.