JPH07249436A - Pressure-contact joint connector - Google Patents

Abstract

PURPOSE:To hinder the influence of wave and tension of a wire without using a social wiring jig, and to set the number of pole of a pressure-contact fixture to be required for one U-turned wire to one. CONSTITUTION:A dummy holding part 24 is provided in a holder 22. The dummy holding part 24 cooperates with a wire temporarily locking part 202 to hold an excessive length part U of a wire W so that the wire W is reciprocated in the direction A crossing the holder 23 to form an arc on the nearly horizontal surface. Since the excessive length part U of the wire W is arranged so as to form an arc on the nearly horizontal surface, a mounting part 220A of a pressure-contact joint connector 20 is opened. Consequently, connection/- disconnection of the pressure-contact joint connector 20 is facilitated to improve the workability. Furthermore, since the excessive length part U can be reciprocated in the direction A crossing the holder, the excessive length part U is U-turned in a loop, and the loop ends UL can be held for positioning.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure welding joint connector, and more particularly, to a pressure welding joint connector which is most suitable for conducting electric wires of a wire harness arranged on a drawing board.

[0002]

2. Description of the Related Art Generally, a pressure contact joint connector is used in manufacturing an electric wiring system such as a wire harness. Especially in the case of manufacturing a large-scale wire harness, a method of manufacturing a plurality of unit wire bundle assemblies called a temporary binding circuit and electrically connecting them with a pressure welding joint connector in a step called a main binding step is a method. It is widely adopted (see, for example, Japanese Utility Model Laid-Open No. 61-117465).

When connecting some of the electric wires constituting the above wire harness to the pressure joint connector, as shown in FIG. 5, the wire harness 100 is used.
There is known a type in which an electric wire W to be connected by a pressure contact joint connector is projected in a loop shape from an electric wire bundle 101 serving as a trunk line, and the U-turn portion 102 is connected by the pressure contact joint connector. In the following description of the present specification, the portion of the U-turn portion 102 that projects the longest from the wire bundle 101 (reference numeral 102 in FIG. 5).
The portion indicated by A) is called the loop end.

As a technique for connecting the U-turn portion 102 with the press-contact joint connector, for example, the actual open shovel 5 is used.
No. 9-119580. In the configuration of the publication, as shown in FIG. 6, the loop ends 102A of a large number of U-turn portions 102 are positioned on the press contact joint connector 110, and the press contact joint connector 1 is formed by a known method.
It is connected to 10.

However, in this structure, it is difficult to position the loop end 102A at a predetermined position of the press contact joint connector 110 due to the curling or pulling of the electric wire W. As a result, the U-turn portion 102 often deviates from the original set position, a stable press-contact structure cannot be obtained, and there is a problem that there is a large variation in quality.

As a means for solving such a problem, a structure disclosed in Japanese Patent Laid-Open No. 3-165476 has been proposed. In the configuration of the publication, as shown in FIG.
The U-turn part 102 is stretched in parallel with the electric wire bundle 101 serving as the main line by using the pair of wire-wiring jigs 121 and 122, and the positioning member 123 is used to extend the U-turn part 102.
The loop end 102A is positioned on the press contact joint connector 110.

In the configuration shown in FIG. 7, the pair of wiring jigs 12 is less likely to be affected by the curling or pulling of the electric wire W.
1, 122 and the U-turn portion 102 on the positioning member 123.
Since it is necessary to arrange each U-turn portion 102 by arranging the wires, there is a problem that the positioning process is troublesome. Further, since the wiring jigs 121 and 122 are provided, it is necessary to secure a space for wiring on the drawing board, so that a layout restriction for providing the press contact joint connector 110 becomes large. was there.

Further, as a structure for solving such a problem, a structure disclosed in Japanese Patent Laid-Open No. 63-259977 is also known. In the configuration of the publication, as shown in FIG. 8, the pressure welding joint connector 110 is placed and positioned on the cantilever jig 124, and each U turn portion 102 is positioned.
Is inserted from the free end of the cantilever jig 124 into the outer periphery of the pressure contact joint connector 110 and the mounting portion 124A of the cantilever jig 124, and each U-turn portion 102 is connected to the pressure contact joint connector 110.

In the configuration of FIG. 8, since the intermediate portion between the loop end 102A of each U-turn portion 102 and the wire bundle 101 is connected to the pressure joint connector 110, the loop end is grasped and the U-turn portion 102 is pressed. 110
Can be positioned. As a result, it is possible to make the electric wire W less susceptible to the curling and pulling of the electric wire W (see the right upper column, line 9 to line 12 of the same publication), and FIG.
It is possible to abolish the wiring jigs 121 and 122 in FIG.

However, in the configuration of FIG.
Since the mounting portion 124A of the cantilever jig 124 is also inserted in 2, the work of disposing the U-turn portion 102 in the pressure welding joint connector 110 and the pressure welding joint connector 110 after pressure welding are removed from the cantilever jig 124. There was a problem that the work became difficult and the workability deteriorated. The present invention has been made in view of the above problems, and an object of the present invention is to provide a crimping joint connector that can perform crimping work in a compact space and has high workability and stable quality.

[0011]

In order to solve the above-mentioned problems, the structure according to claim 1 of the present invention comprises a holder having a mounting portion in the lower portion and a large number of covered electric wires formed in the upper portion of the holder. In a press-joint joint connector having a wire temporary fixing portion that is arranged side by side and temporarily fixed, the holder cooperates with the wire temporary fixing portion, and the wire reciprocates in a direction intersecting the holder to form an arc on a substantially horizontal plane. The pressure-welding joint connector is characterized by integrally having a dummy holding portion for holding the extra length portion of the electric wire as described above.

According to a second aspect of the present invention, in the press contact joint connector according to the first aspect, the dummy holding portion holds the extra length portions of the plurality of electric wires in a vertically stacked state. .

[0013]

According to the structure of the first aspect of the present invention, the dummy holding portion holds the extra length portion of the electric wire, so that the electric wire is
When temporarily fixed, it reciprocates in the direction intersecting with the holder and forms an arc on a substantially horizontal plane, so the extra length of the electric wire is arranged in the horizontal plane, and the mounting portion of the pressure welding joint connector is opened. It is temporarily fixed in the state.

According to the second aspect of the invention, the extra length portions of the plurality of electric wires are stacked in the vertical direction of the holder.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings. FIG. 1 is a schematic exploded perspective view showing a main part of a pressure contact joint connector according to a preferred embodiment of the present invention, and FIG. 2 is a schematic side view showing a main part of the pressure contact joint connector according to the embodiment of FIG. .

Referring to FIG. 1, the pressure contact joint connector 20 of the present embodiment includes a resin cover 21 and a holder 2.
2 and the press-fitting metal fitting 23 made of a conductive material. The cover 21 is a molded product having a U-shaped cross section, and has a substantially rectangular top plate portion 21A, a side plate portion 21B extending on the longitudinal side portion of the top plate portion 21A, a side plate portion 21B, and An end plate portion 21C extended to the top plate portion 21A is integrally provided.

On the inner surface of the top plate portion 21A, a large number of pressing pieces 21D that hang downward are provided. Pressing piece 21D
Is for pushing the U-turn portions U1 to U5 of the electric wire W into the press-fitting metal fitting 23 in the press-contacting step of the electric wire W described later. Although not specifically shown, each pressing piece 21D
A groove for avoiding interference with the blade 23A of the press-fitting metal fitting 23, which will be described later, is formed on the, and a pressing surface is formed along the arc of the electric wire W.

Each of the side plate portions 21B has a top plate portion 21A.
The lower part is provided with a recess 21E formed along the longitudinal direction. Indents 21F are formed in the recess 21E so as to be arranged at a predetermined interval in the longitudinal direction. The indent 21F is for pushing the electric wire W downward. The end plate 21C includes a protrusion 21G and a locking protrusion 2
1H and 1H are integrally provided.

Next, the holder 22 has a main body 22A which is opposed to the top plate 21A of the cover 21 and has a substantially rectangular shape in plan view.
And two sandwiching piece groups 22B and 22C arranged in parallel along the longitudinal direction of the main body portion 22A. The main body 22A has a mounting portion 220A (see FIG. 2) formed on the bottom thereof. The mounting portion 220A is mounted on a predetermined jig (not shown) and receives a pressure contact force when the electric wire W is pressure-contacted. Also, each sandwiching piece group 22B,
22C are respectively arranged upright in the longitudinal direction and constitute a temporary fixing portion 202 for temporarily fixing the electric wire W to be pressure-contacted to the pressure-contact metal fitting 23.

The sandwiching piece groups 22B and 22C define a sandwiching space D1 for sandwiching the electric wire W with each other. Also,
The one sandwiching piece group 22B and the other sandwiching piece group 22C face each other in the sandwiching space D1 in the width direction of the main body portion 22A. Each sandwiching piece group 22B, 22C includes a large number of sandwiching pieces 202.
It is composed of A. Each sandwiching piece 202A is a columnar body having a rectangular cross section, and a generally arrowhead-shaped projection 202B is formed at the tip thereof. And one projection 202
B and another protrusion 202 adjacent to this one protrusion 202B
Introduction space D for introducing the electric wire W into the holding space D1 with B
It divides two.

An inclined surface 202 is formed on each projection 202B.
D is formed, and the inclined surface 202D guides the electric wire W into the introduction space D2. Figure 1
In, 22H is a jaw. The jaw 22H is a recess 21E formed in each side plate 21B of the cover 21.
Is integrally provided with a receiving surface H1 that receives the lower surface of the cover 21 and a locking portion H2 that is continuous with the receiving surface H1 and that locks to the outer surface of the side plate portion 21B. The receiving surface H1 positions the cover 21 in the vertical direction. In addition, the locking portion H2 prevents the side plate portion 21B from expanding when pressure is applied.

Here, in this embodiment, the main body 22
A dummy holding portion 24 is provided on one end side of A. The dummy holding portion 24 of the present embodiment includes the sandwiching piece 202A of each sandwiching piece group 22B, 22C from the well-known pressure contact joint connector 20.
Is formed by removing a part of the electric wire W. By accommodating the extra length portion U of the electric wire W held in each holding space D1, the electric wire W cooperates with the temporary wire fixing portion 202, and the electric wire W is held by the holder 23.
It is for holding the extra length portion U of the electric wire W so as to reciprocate in a direction intersecting with (direction indicated by an arrow A in FIG. 1) to form an arc on a substantially horizontal plane.

Referring to FIG. 2, the dummy holding portion 24 of this embodiment holds the extra length portions U of the plurality of electric wires W in a vertically stacked state. Thereby, the extra length portion U of each electric wire W is stacked in the vertical direction of the holder 22. The press-fitting metal fitting 23 is a well-known one made of a conductive plate material,
This is for sandwiching the core wire of the electric wire W in a state where the covered portion of the electric wire W is cut out, and for electrically connecting the press-fitting metal fitting 23 and the electric wire W.

According to the above construction, the dummy holding portion 24 holds the extra length portion U of the electric wire W so that the electric wire W reciprocates in the direction A intersecting the holder 22 when temporarily fixed. Since it forms an arc on a substantially horizontal plane, the extra length U of the electric wire W is
The pressure contact joint connector 20 is temporarily fixed with the mounting portion 220A open. Therefore, according to this embodiment, the pressure contact joint connector 20 can be easily attached and detached, and the workability is improved.

In addition, according to the configuration of this embodiment, as shown in FIG. 2, the extra length portion U of the plurality of electric wires W is the dummy holding portion 2.
Since the holder 22A is stacked in the vertical direction by being held by 4, the holder 22A is prevented from becoming large in the horizontal direction (longitudinal direction of the holder 22A) intersecting the electric wire W, and the press-joint joint connector 20 itself. It is possible to minimize the increase in size.

Therefore, according to the present embodiment, the pressure welding work can be performed in a compact space, and the workability is high and the quality can be stabilized. The press contact joint connector 20 of this embodiment is used for connecting the wire harness WH shown in FIGS. 3 and 4. Each wire harness W
H is a combination of predetermined temporary binding circuits, which is arranged on a drawing plate (not shown) and short-circuited by the pressure joint connector 20. In this way, when a plurality of temporary binding circuits are manufactured in advance and the desired temporary binding circuits are combined to manufacture the wire harness WH, the wire harness WH in which complex wiring systems are combined in a complex manner is used.
Wire harness WH
By designing the system for each system, sharing can be achieved.

In each of the temporary binding circuits, as is conventionally known, the electric wire is cut to a predetermined length and cut, the coating on both ends of the cut electric wire is stripped, and the exposed electric wire both ends are cut. It is assembled by crimping the terminal fitting to the core wire and then inserting the crimped terminal fitting into a predetermined connector housing 1-14. Each temporary binding circuit is formed with U-turn portions U1 to U7 in which a portion to be connected by the press-joint joint connector 20 is expanded in a loop shape during the subsequent main binding. Such U-turn portions U1 to U7 can be easily formed especially by automatically laying the wires with an automatic wire laying machine. This is because, when performing wiring with an automatic wiring machine, wiring pins can be planted in line with the U-turn parts U1 to U7, and wiring can be performed so that the wiring pins are hooked with electric wires. Is. An automatic wiring machine for automatically wiring electric wires for manufacturing a temporary binding circuit is disclosed in, for example, the applicant's earlier application (Japanese Patent Application No. 4-155349 and Japanese Utility Model Application No. 4-4).
No. 3609, Japanese Patent Application No. 4-163046, Japanese Patent Application No. 4-2
No. 48300) may be used. Moreover, you may use other automatic wiring machines.

In the embodiment shown in FIG. 3, U-turn portions U1 to U1-
U5 protrudes from a midway portion of the electric wire bundle 101 serving as a trunk line in one direction intersecting the longitudinal direction of the electric wire bundle 101.
If this configuration is adopted, only the electric wires W to be pressure-welded by the pressure-welding joint connector 20 can be easily selected, so that the selection work of the electric wires W is easy and reliable, and the productivity is improved.

On the other hand, in the embodiment shown in FIG. 4, U-turn portions U6 and U7 are formed at the ends of the electric wire bundle 101 serving as the trunk line. In addition, each temporary binding circuit in this embodiment uses the electric wire W.
It includes a cut-off end W1 obtained by cutting off the end. The U-turn portions U6 and U7 are short-circuited and connected by one pressure contact joint connector 20. When pressing the above-mentioned U-turn portions U1 to U7, in this embodiment, the dummy holding portion 24 is employed, so that the extra length portion U of the electric wire W can reciprocate in the direction intersecting the holder 22. , It becomes possible to temporarily fix the U-turn parts U1 to U7 while gripping the loop end UL and performing alignment, and prevent the influence of the wire curling or pulling of the electric wire W without using a special wiring jig. It becomes possible to do.

In addition, when the U-turn parts U1 to U7 are pressure-welded, it is possible to set the number of poles of the pressure-contact fittings required for one U-turn part U1 to U7 to one, so that the product is It becomes possible to prevent the cost from becoming high. That is,
As shown in Fig. 1, the conventional pressure contact joint connector is U
When the electric wire W is pressure-contacted so that the turn portions U1 to U7 reciprocate in the direction A intersecting with the holder 23, it is necessary to press both the intermediate portions of the U-turn portions U1 to U7. Two poles were required for one U-turn portion, but in the present embodiment, each wire W is attached to the dummy holding portion 24.
By holding the extra length U of the
It is possible to set the number of poles of the pressure welding metal fitting required for 1 to U7 to one.

The method of manufacturing the wire harness WH described above is merely an example to which the present invention can be applied, and the present invention is not limited to the embodiment described above. In the description of the embodiments, only two temporary binding circuits are used for this binding in order to facilitate the description and illustration.
When manufacturing the actual wire harness WH, it is often the case that a large number of temporary binding circuits are assembled to carry out main binding. In such a case, of course, the wire harness WH can be manufactured using the manufacturing method according to the present invention.

Further, in the manufacturing method of this embodiment, the production of a plurality of electric wire units including the scale cutting step, the peeling step and the terminal crimping step and the production of the temporary binding circuit using the plurality of electric wire units are performed by an automatic machine device. May be done by
In some cases, it may be performed manually by a worker.
In addition, the present invention can be variously modified within the scope of the claims.

[0033]

As described above, according to the present invention,
The extra length portion of the electric wire is arranged in a substantially horizontal plane and is temporarily fixed with the mounting portion of the press contact joint connector opened, so that the press contact joint connector can be easily attached and detached, and workability is improved. Moreover, since the extra length of the electric wire can reciprocate in the direction intersecting with the holder, the extra length of the electric wire is U-turned in a loop shape to form a U-turn portion, and the loop end is grasped for alignment. While performing, it is possible to temporarily fix the U-turn portion to the press contact joint connector. As a result, it is possible to prevent the influence of wire curling or pulling of the electric wire without using a special wiring jig.

Further, according to the second aspect of the invention, since the extra length portions of the plurality of electric wires are held by the dummy holding portion so that they are stacked in the vertical direction of the holder, the horizontal direction intersecting the electric wires. In addition, it is possible to prevent the holder from increasing in size and to suppress the increase in size of the press contact joint connector itself to a minimum. Therefore, according to the present invention, the pressure contact work can be performed in a compact space, the workability is high, and the quality can be stabilized, which is a remarkable effect.

[Brief description of drawings]

FIG. 1 is a schematic exploded perspective view showing an insulation displacement joint connector according to a preferred embodiment of the present invention.

FIG. 2 is a schematic side view showing a main part of the press contact joint connector in the embodiment of FIG.

FIG. 3 is a configuration diagram of a wire harness that employs the embodiment of FIG.

FIG. 4 is a wiring diagram of a wire harness according to another embodiment of the present invention.

FIG. 5 is a schematic exploded perspective view showing a main part of a conventional wire harness.

FIG. 6 is a schematic exploded perspective view showing a main part of another conventional wire harness.

FIG. 7 is a schematic exploded perspective view showing a main part of still another conventional wire harness.

FIG. 8 is a schematic exploded perspective view showing a main part of still another conventional wire harness.

[Explanation of symbols]

 20 pressure contact joint connector 22 holder 24 dummy holding part 220A mounting part WH wire harness

Claims (2)

[Claims] 1. A pressure welding joint connector comprising: a holder having a mounting portion at a lower portion; and an electric wire temporary fixing portion formed on an upper portion of the holder for arranging a large number of covered electric wires and temporarily temporarily fixing the electric wires downward from above. , A dummy holding portion which cooperates with the electric wire temporary holding portion and integrally holds a dummy holding portion for holding the extra length portion of the electric wire so that the electric wire reciprocates in a direction intersecting with the holder to form an arc on a substantially horizontal plane. Pressure contact joint connector. 2. The press contact joint connector according to claim 1, wherein the dummy holding portion holds a plurality of extra length portions of the electric wires in a vertically stacked state.