JP3509539B2 - Wire crimping joint - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire pressure welding joint tool used for a wire harness of an automobile, and can easily and surely joint electric wires at an arbitrary position to form a branch circuit.

[0002]

2. Description of the Related Art Conventionally, there are an intermediate splicing method and a terminal concentrated splicing method as a method for connecting electric wires to each other to form a branch circuit. In the intermediate splicing method, as shown in FIG. 10, the middle portion of the electric wire W1 is peeled off to expose the core wire c1, while the end of the electric wire W2 is peeled off to expose the core wire c2, and the intermediate joint terminal 1 is exposed to the core wire. The c1 and c2 are caulked and crimped, and the tape 2 is wound around the crimped portion for protection. Figure 1 shows the terminal splicing method.
As shown in FIG. 1, the ends of the electric wires W1, W2, ... Are peeled off to expose the core wire c, these core wires are superposed and ultrasonically welded, and the welded portion is covered with a cap 3 for protection.

[0003]

The intermediate splicing method shown in FIG. 10 has a problem that it requires a lot of man-hours such as stripping of the wire, crimping of the intermediate joint terminal, and winding of the tape, which is troublesome. Further, in the terminal concentrated splicing method shown in FIG. 11, since it is necessary to make the joint position the end of the electric wire, the electric wire length becomes unnecessarily long, the electric wire cost increases, and the weight increases. Also,
In either of the methods of FIG. 10 and FIG. 11, it is necessary to carry out at the stage of temporarily binding the electric wires, which cannot be done at the time of the final binding, and there is a problem that the work process is restricted.

The present invention has been made in view of the above-mentioned problems, and the electric wires are jointed by a method different from the conventionally widely used intermediate splicing method and terminal concentrated splicing method, so that a branch circuit can be easily formed at any position. An object of the present invention is to provide an electric wire pressure welding joint tool that can be reliably formed.

[0005]

In order to solve the above-mentioned problems, according to the present invention, in claim 1, an outer surface of a band locking portion of a clip band used for focusing an electric wire group and a projecting portion from the band locking portion are provided. A first press-contact plate and a second press-contact plate made of a conductive metal material are fixed to the band part, respectively, and a plurality of press-contact slots are connected along the protruding end edges of the first and second press-contact plates, respectively. A pressure contact blade is formed along the inner peripheral edge of the slot, and the band portion is wound while the electric wire is held in each pressure contact slot of the first pressure contact plate provided on the outer surface of the band engaging portion. By pressing the pressure contact slot of the second pressure contact plate provided in the band portion so as to oppose the pressure contact slot of the first pressure contact plate, the insulation coating of the above wire is cut by the pressure contact blades of the upper and lower pressure contact slots to contact the core wire. Then, these wires are jointed via a pressure plate. Provides a pressure joint device of the wire, characterized in that has a configuration that.

In the above-mentioned pressure contact joint tool, a clip band is attached to an electric wire group to be jointed at a position suitable for forming a branch circuit, and an electric wire is inserted into each slot of the first pressure contact plate of the band locking portion, In this state, the band portion is wound around the electric wire, each slot of the second pressure contact plate on the side of the band portion is positioned so as to face each slot of the first pressure contact plate, and the band portion is tightened in this state. Is pressed toward the second pressure contact plate side, and the insulation coating is cut on both sides of the wire by the pressure contact blades provided on the inner peripheral edges of the slots of both the first and second pressure contact plates, and the pressure contact blade contacts the core wire of each wire. Can be made. Therefore, the electric wires in contact with the first and second press contact plates can be jointed to each other to form a branch circuit. In this way, the wires can be easily connected by simply winding the clip band around the wires and tightening them.

Further, according to the present invention, in claim 2, a semicircular accommodating groove for holding each of the electric wires is integrally formed on the outer surface of the band locking portion of the clip band used for converging the electric wire group. At the same time, a pressure contact plate made of a conductive metal material is fixed to the band portion protruding from the band locking portion, and a plurality of pressure contact slots are continuously provided along the protruding end edge of the pressure contact plate. A pressure contact blade is formed along the peripheral edge, and the band is wound in a state where a plurality of electric wires are held in the accommodation groove, and the electric wire is insulated with the pressure contact blade of each pressure contact slot of the pressure contact plate of the band part. A crimping joint tool for an electric wire is provided, which is configured to be cut and brought into contact with a core wire, and these electric wires are jointed via a crimping plate.

In the pressure contact joint tool having the above structure, the band engagement portion side is not provided with the pressure contact plate, but the accommodation groove for retaining the electric wire is provided, and the electric wire retained in the accommodation groove is provided on the band portion side. By pressing the slot of the pressure contact plate, the insulation coating of the electric wire is cut by the pressure contact blade at the inner peripheral edge of the slot and brought into contact with the core wire to join the electric wires together.

Further, according to the present invention, in claim 3, a semicircular accommodating groove for holding the wires one by one is projected on the outer surface of the band locking portion of the clip band used for focusing the wires. At the same time, a pressure contact plate made of a conductive metal material is fixed to the band portion protruding from the band locking portion, a linear pressure contact blade is provided along the protruding end edge of the pressure contact plate, and a plurality of electric wires are provided in the accommodation groove. With the band portion wrapped around the electric wire while holding the wire, the electric wire is cut with the linear pressure contact blade of the pressure contact plate to contact the core wire, and these wires are jointed via the pressure contact plate. The present invention provides a pressure welding joint tool for electric wires.

In the pressure contact joint tool having the above-mentioned structure, the pressure contact plate provided in the band portion is provided with the linear pressure contact blade without providing the slot. In this case, it is not necessary to align the slot with the electric wire held in the receiving groove, and when the band part is tightened and the pressure plate is pressed toward the electric wire side, the insulation coating of each electric wire is cut. Can be contacted with the core wire,
Electric wires can be jointed.

In any of the pressure contact joint tools according to any one of claims 1 to 3, the pressure contact plate attached to the band portion is embedded by molding the base portion of the pressure contact plate into the band portion, and It is preferable that the press-contact plate is arranged on the band portion at a position where the band engaging portion and the hinge-like connecting portion are opened (claim 4).

By molding the pressure contact plate as described above, it is possible to eliminate the work of attaching the pressure contact plate to the band portion and the band locking portion and to increase the attachment strength of the pressure contact plate. Also, by arranging the pressure contact plate provided on the band part at a position where the band locking part and the hinge-like connecting part are opened, it is easy to align the slot of the pressure contact plate with the wire held by the band locking part. You can

It is preferable that protective walls are provided on both sides in the width direction of the attachment portion of the pressure contact plate of the band portion and / or the band locking portion (claim 5). By providing the protective wall in this way, it is possible to more reliably protect the pressure contact portion of the electric wire.

Further, it is preferable that two pressure contact plates attached to the band portion and / or the band locking portion are provided in parallel with each other in the width direction (claim 6). When two pressure contact plates are provided in the width direction as described above, the joint of the electric wires can be performed more reliably when the pressure contact plates joint the electric wires twice.

[0015]

DETAILED DESCRIPTION OF THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

1 to 5 show a first embodiment. The pressure welding joint tool 10 for an electric wire according to the present invention has a basic shape of a clip band used for bundling an electric wire group, and the band portion 12 projects from the band locking portion 11, and the band locking portion 11 and the band portion 12 are integrated. Is resin molded.

The band locking portion 11 is box-shaped,
A band through hole 11a is provided, and a band locking piece 11b is projectingly provided on the inner surface of the band through hole 11a. The band portion 12 projects from the end surface of the band through hole 11a on the one end opening side, and the serrated locking portion 1 is provided on the outer surface of the band portion 12.
2a are continuously provided. Free end 1 of the band portion 12
By inserting 2b into the band through hole 11a from the other end opening and tightening, the band locking piece 11b is locked to the locking part 12a of the band part so that the band part 11 is locked.

On the outer surface of the band engaging portion 11 on the winding side of the band portion, a base portion of a first pressure contact plate 13 made of a conductive metal material is formed by molding so as to project. A plurality of (four in the present embodiment) arc-shaped grooves 13a are formed as slots 13a along the protruding edge of the first press-contact plate 13, and the slots 1a are formed.
The press contact blade 13b is formed along the arc-shaped inner peripheral edge of 3a. Further, two first pressure contact plates 13 are provided in parallel to the outer surface of the band locking portion 11.

Further, the band portion 12 is provided with a locking portion 12a by forming a hinge-like connecting portion 12c between the band locking portion 11 and the band locking portion 11 within a range capable of rotating the band portion 180 degrees. The second pressure contact plate 14 made of a conductive metal material is attached to the inner surface side of the surface opposite to the contact surface. Similar to the first press-contact plate 13, the second press-contact plate 14 has a base portion formed by molding on the band portion 12 so as to project, and a slot 14a formed of a plurality of arc-shaped grooves is formed along the protruding end edge. Recessed,
The press contact blade 14b is formed along the inner peripheral edge of the arc. Further, the second pressure contact plates 14 are also provided in parallel in the width direction of the band portion 12, and the interval between the two second pressure contact plates 14 is the same as the interval between the two first pressure contact plates 13. Moreover, the pitch of the slots is also the same as that of the first press contact plate.

The protection wall 11 is provided along the outer edges of the band locking portion 11 provided with the two first pressure contact plates 13 in the widthwise direction.
c is provided so as to surround the two first pressure contact plates 13 with the protective wall 11c. Similarly, the protective walls 12d are provided along the outer edges of the band portion 12 provided with the two second pressure contact plates 14 on both sides in the width direction, and the two second pressure contact plates 14 are provided together.
It is surrounded by 2d. In addition, a protective wall is provided on either one of the band locking portion 11 or the band portion 12,
The height of the protective wall is set so that the first pressure contact plate 1 is opposed to the first pressure contact plate when pressure contacting the electric wire.
You may set so that both 3 and the 2nd press contact plate 14 may be enclosed.

Next, a method of joining the electric wire W by using the above pressure contact joint tool 10 will be described.

First, as shown in FIG. 3A, the electric wire W to be jointed is inserted and held in the slot 13a of the first press-contact plate 13 of the band locking portion 11. Then, Fig. 3
As shown in (B), the hinge-shaped connecting portion 1 of the band portion 12
2c is rotated about 180 degrees,
The slots 14a of the pressure contact plate 14 are opposed to the slots 13 of the first pressure contact plate 13, respectively. In this state, as shown in FIG. 3C, the band portion 12 is pressed toward the band locking portion 11 side. This pressing may be performed using a jig (not shown).

By the pressing of the band portion 12, the second pressure contact plate 14 is pressed toward the first pressure contact plate 13 side, and as shown in FIGS. 3D and 4, each slot 1 of the first pressure contact plate 13 is pressed.
The half of the insulating coating outside the outer peripheral surface of the electric wire W held by 3 is cut by the press contact blade 14b of the second press contact plate 14. At the same time, the electric wire W is connected to the slot 13a of the first pressure contact plate 13.
The pressure contact blade 13b of the first pressure contact plate 13 by pushing
Then, the insulation coating on the other half of the outer peripheral surface of the electric wire W is cut. Thus, the pressure contact blades 13 of the first and second pressure contact plates 13 and 14 are
b, 14b cut the entire circumference of the insulation coating of the electric wire W, and the core wire c
The electric wires W are electrically connected to each other via the first press-contact plate 13 and the second press-contact plate 14 by bringing the electric wire W into contact with the press-contact blades 13b and 14b.

Next, as shown in FIG. 3 (E), the band portion 12 is passed through the band through hole 11a of the band locking portion 11, and the locking piece 11b is locked with the locking portion 12a of the band portion 12. Then, the band portion 11 is clamped and fixed, and the pressed state of the electric wire W is maintained.

When the electric wire W is pressed by the first and second pressure contact plates 13 and 14, the protective walls 11c and 12d are respectively in the first and second positions.
It is located on the outer edge of both sides of the second pressure contact plates 13 and 14, and protects the pressure contact points.

Instead of the pressure welding method shown in FIG. 3, as shown in FIG.
The free end of the band part 12 is passed through the band through hole 11a of the band locking part 11 in a state of being arranged at a position facing the slot 13a of the press contact plate 13 and is moved in a direction indicated by an arrow (a direction orthogonal to the band through hole 11a). When the band portion 12 is pulled and the electric wire W is tightened, the second press-contact plate 14 is pressed toward the first press-contact plate 13 side, and the electric wire W is press-contacted by the first and second press-contact plates similarly to the method shown in FIG. Can be connected. That is,
The pressure connection can be performed by tightening the band portion 12.

As described above, according to the pressure welding joint tool of the present invention, since the electric wire can be jointed only by winding the band around the electric wire group to be jointed, a branch circuit can be formed very easily and the joint work can be performed. Any of the temporary binding step or the main binding step can be appropriately performed.

FIG. 6 and FIG. 7 show the second embodiment. The difference from the first embodiment is that the band locking portion 11 is not provided with a pressure contact plate, but is a semi-circle for holding electric wires one by one. This is the point that the accommodating groove 11e is integrally formed. A pressure contact plate 14 made of a conductive metal material is fixed to the band portion 12 as in the first embodiment.

Also in the second embodiment, the band portion 1
The slot 14a of the second press-contact plate 14 is positioned so as to correspond to the electric wire W held in the housing groove 11e, and the band portion 12 is pressed toward the band locking portion 11 side in this state to press-connect the inner peripheral edge of the slot 14a. By cutting the insulating coating of the electric wires W with the blade 14b and bringing them into contact with the core wire, a joint between the electric wires W can be achieved.

8 and 9 show the third embodiment, and the second embodiment
The difference from the embodiment is that the pressure contact plate 14 ′ attached to the band portion 12 is not provided with a slot, and the protruding edge is a linear pressure contact blade 14 c ′.

In the third embodiment, as shown in FIG. 9, the band portion 12 is connected to the band through hole 1 of the band locking portion 11.
1a is pulled linearly to tighten the band portion 12, so that the insulating coating of the electric wire W held in the housing groove 11e of the band locking portion 11 is pressed against the press contact blade 14 'of the press contact plate 14'.
The core wire of each electric wire W can be brought into contact with the press contact blade 14c 'while cutting while sliding c'. That is, unlike the first and second embodiments, it is not necessary to align the slot of the press-contact plate with the electric wire, and the electric wires W can be jointed only by tightening the band portion 12.

[0032]

As is apparent from the above description, when the pressure welding joint device for electric wires according to the present invention is used, the electric wires to be jointed are aligned and held in the band engaging portion, and the band portion is tightened in this state. Only by this, it is possible to easily and surely press-connect the electric wire with the press-connecting plate provided on the band portion.

As described above, the necessary parts can be used for jointing the electric wire only with one clip band type pressure contact joint tool, and can be used even if the electric wire sizes are different. Moreover, it has various advantages such as not requiring complicated working steps such as the conventional intermediate splicing method and terminal concentrated splicing method, and that the electric wires can be jointed in any step.

[Brief description of drawings]

1A and 1B show a press contact joint tool according to a first embodiment of the present invention, in which FIG. 1A is a front view, FIG. 1B is a side view, and FIG.

FIG. 2 is a diagram showing a first and a second parts used in the pressure welding joint device of FIG.
It is an enlarged front view of a press contact plate.

FIGS. 3A to 3E are drawings showing a process of pressure-welding and connecting an electric wire using the pressure-joint joint tool.

FIG. 4A is a perspective view showing a pressure-welded state of an electric wire by the pressure-contact plate, and FIG. 4B is an enlarged sectional view of a main part.

FIG. 5 is a view showing another pressure welding connection method.

FIG. 6 is a side view showing a press contact joint tool of a second embodiment.

FIG. 7 is an enlarged cross-sectional view showing a state in which an electric wire is pressure-welded by the pressure-welding joint tool of the second embodiment.

FIG. 8 is a side view showing a press contact joint tool of a third embodiment.

FIG. 9 is a side view showing a method for pressure-welding an electric wire using the pressure-welding joint tool of the third embodiment.

FIG. 10 is a schematic view showing a conventional example.

FIG. 11 is a schematic view showing another conventional example.

[Explanation of symbols]

10 Pressure joint tool 11 Band locking part 11a band through hole 11e accommodation groove 12 band section 12a locking part 12c Hinge connection 13 First pressure plate 14 Second pressure plate 13a, 14a slots 13b, 14b Pressure contact blade W electric wire

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H01R 4/24 H01R 43/01

Claims (6)

(57) [Claims] 1. A first press-contact plate and a second press-contact plate made of a conductive metal material are provided on an outer surface of a band engaging portion of a clip band used to bundle an electric wire group and a band portion protruding from the band engaging portion. Each of them is fixed, a plurality of press contact slots are connected to each other along the protruding end edges of the first and second press contact plates, and press contact blades are formed along the inner peripheral edges of these press contact plates. While holding the electric wire in each pressure contact slot of, by winding the band portion, by pressing the pressure contact slot of the second pressure contact plate of the band portion so as to face the pressure contact slot of the first pressure contact plate, A crimping joint tool for electric wires, characterized in that the electric wire is cut with an insulating coating by a crimping blade of the upper and lower crimping slots to contact the core wire, and these electric wires are jointed via a crimping plate. 2. A semicircular accommodating groove for holding each electric wire is integrally formed on the outer surface of the band engaging portion of the clip band used for converging the electric wire group, and protrudes from the band engaging portion. A pressure contact plate made of a conductive metal material is fixed to the band portion to be provided, a plurality of pressure contact slots are continuously provided along the protruding edge of the pressure contact plate, and pressure contact blades are formed along the inner peripheral edge of each pressure contact slot. The band portion is wound in a state where a plurality of electric wires are held in the accommodation groove, and the insulation coating is cut off from the electric wires by the press-contact blades of the press-contact slots of the press-contact plate of the band part to make contact with the core wire. An electric wire crimping joint tool, characterized in that the electric wire is jointed via a crimping plate. 3. A semicircular accommodating groove for holding each electric wire is integrally formed on the outer surface of the band engaging portion of the clip band used for converging the electric wire group, and protrudes from the band engaging portion. A pressure contact plate made of a conductive metal material is fixed to the band portion to be installed, a linear pressure contact blade is provided along the protruding edge of the pressure contact plate, and the band portion is connected to the electric wire while holding a plurality of electric wires in the accommodation groove. The wire is crimped by wrapping it around and tightening it by cutting the insulation coating with the linear crimping blade of the crimping plate to bring it into contact with the core wire, and jointing these wires through the crimping plate. Joint tool. 4. The press-contact plate attached to the band part has a base part of the press-contact plate embedded in the band part by molding, and the press-contact plate includes the band engaging part and the hinge-like connecting part. The pressure welding joint tool for an electric wire according to any one of claims 1 to 3, which is arranged in a band portion at an opened position. 5. The electric wire according to any one of claims 1 to 4, wherein protective walls are provided on both sides in the width direction of the attachment portion of the pressure contact plate of the band portion and / or the band locking portion. Pressure welding joint tool. 6. The electric wire pressure joint device according to any one of claims 1 to 5, wherein two pressure contact plates attached to the band portion and / or the band locking portion are provided in parallel with each other in a width direction. .