JPH078958U - Electric wire connector - Google Patents

Abstract

(57) [Summary] [Purpose] Even though the wire is sufficiently pressed against the wire, it has good performance to bite into the wire, and when an external force is applied to the wire, it securely bites into the wire. Prevents accidental disconnection of electric wires by preventing movement in the direction of exit. [Constitution] A bottomed rectangular container body (1) made of a synthetic resin material, and a metal fitting inside the container body (1), which has a plurality of electric wire pressing claws (21). A hard metal fitting main body (2), a conductive plate (3) made of a good conductor, and a synthetic resin lid fitted and fixed to the opening (11) of the container body (1) and the tip of the wire. And a plurality of electric wire guide holes (41) for guiding the electric wire pressing hole (41) formed on the metal fitting main body (2) to form the base wall (2) of the metal main body (2). The tip side of the upper side wall (24), which is bent and projected from the upper side of 22) toward the front side, is formed by bending in an inclined direction toward the lower side and closer to the base wall (22). The upper surface side of the tip portion is inclined and cut to form a sharpened shape.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention is used when connecting or branching a plurality of single electric wire cables for indoor wiring from a distribution board to a terminal center in various buildings such as houses and buildings. This is related to the connector for single-wire electric wires.

[0002]

[Prior art]

 Conventionally, as a connector for connecting a single wire cable that is a conductor with a relatively thick single wire with a diameter of 1 to 2 mm, which is mainly used for wiring in the ceiling or in the wall, one-touch operation of inserting the single wire is used to connect the wires between the cables. A connection that can be connected has already been proposed, for example, as disclosed in Japanese Patent Publication No. 2-51222.

This type of electric wire connector has a large number such as from two for connecting only two electric wires to three, four, five, six, eight or ten. Types are required. On the other hand, in this type of wire connector, when the wire is inserted, it acts to push the inserted wire toward the conductive plate for conduction, and it also pulls an external force in the pulling direction on the inserted wire. When a wire is applied, it has a structure that has a wire pressing claw that acts to bite into the wire and prevent movement in the wire-out direction in order to prevent accidental disconnection.

Since the wire pressing claw is capable of biting into the thus inserted wire to prevent the wire from coming off, a steel plate that is difficult to perform precision processing is used as the forming material. There is. On the other hand, as mentioned above, many types of wire connectors of this type, from those for two wires to those for eight wires, or those for ten wires, are actually used and are necessary. Therefore, as a matter of course, the current situation is that steel plates that are difficult to process are used and the metal fittings are precision-processed for each type.

However, in the wire pressing claw mainly composed of the metal fittings, if the tip portion is simply cut in the thickness direction, the wire pressing performance is achieved but the biting performance into the wire is not achieved. However, as described above, when an external force is applied to the wire in the pull-out direction, it has a problem that it is difficult to achieve the action performance that bites into the wire and prevents movement in the pull-out direction so as to prevent accidental disconnection. It is a thing.

[0006]

[Problems to be solved by the device]

 Therefore, the present invention aims to surely solve the problems of such a conventional connector by a simple procedure, and in particular, a large number of wires such as 6 wires or 8 wires are used. Even in the case of the connector for the book, it is intended to provide a means capable of avoiding such a conventional problem.

[0007]

[Means for Solving the Problems]

 The structure of the present invention for achieving the object will be described with reference to the reference numerals in the drawings showing the embodiments. The structure of the connector according to the present invention is a container with a bottomed rectangular tube formed of a synthetic resin material. The main body 1, a metal fitting internally mounted inside the container main body 1, which is a hard metal main body 2 having a plurality of electric wire pressing claws 21, a conductive plate 3 made of a good conductor, and the main body 1 of the container. The lid 4 is a synthetic resin lid fitted and fixed in the opening 11 and having a plurality of wire guide holes 41 for guiding the tip of the wire. The wire pressing claw 21 is bent and projected from the upper side of the base wall 22 of the metal main body 2 toward the front side so that the tip side of the upper side wall 24 is inclined downward toward the base wall 22. It is bent, and the top side of the tip is cut off. It is obtained by the configuration that is formed on sharpened shape Te.

This sharpened shape is not a double-sided cut but a single-sided cut only on the upper surface side, and the cut angle must be considered in relation to the inclination angle of the wire pressing claw 21. However, the range of 30 to 60 ° is preferable. Particularly, the range of 40 to 50 ° centered at 45 ° is most preferable. This is because if the cutting angle is small, the biting into the wire is poor, and if it is too large, the claw may become too thin and may be chipped due to the wire withdrawing action.

[0009]

[Action]

 Since the connector of the present invention is configured as described above, it has a sufficient effect of pressing the electric wire, but it has a good biting performance to the electric wire and the external force in the pulling direction to the electric wire. When a wire is applied, it securely bites into the electric wire to reliably prevent the wire from moving in the exit direction, and to prevent accidental accidental disconnection of the wire.

In using the electric wire connector of the present invention, as in the conventional case, the tip portion of the single-wire electric wire, in which the insulation coating on the tip is removed by a certain length, is placed in the insulating case. It suffices to pass through the wire passage guide hole 25 from the wire guide hole 41 formed in the lid body 4 and insert it into the inside of the metal fitting main body 1. When the electric wire is inserted into the container body 1, the tip of the electric wire is pressed against the conductive plate 3 by the electric wire pressing claw 21 having spring elasticity inside the metal fitting main body 1, and is brought into line contact or surface contact with the surface of the conductive plate 3. Then, it is electrically connected to another electric wire inserted in the connector through the conductive plate 3. The wire pressing claws 21 that are inclined along the direction of insertion of the electric wire firmly engage with the surface layer of the electric wire when an external force is applied to the electric wire, and prevent the electric wire from coming out of the connector.

[0011]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall exploded view for explaining the manufacturing method, and FIG. 2 is a view for explaining the structure of the manufactured connector. This connector is an embodiment of a connector in which four electric wires each having a single core wire are electrically connected to each other. The container body 1 of this embodiment is formed of a transparent insulating resin material such as PVC into a bottomed rectangular tube shape, and an opening 11 is provided at one end (upper side in the drawing) of the opening 11. Horizontally long lid fitting holes 12 and 12 are formed on the front and rear faces. The lid 4 is made of an opaque or translucent insulating resin material and has a prismatic shape with a short vertical thickness, and is shaped to fit exactly into the opening 11. It penetrates in the vertical direction and the lower end is tapered. 4 electric wire guide holes 41 are formed side by side in the lateral direction, and laterally long projections 42, 42 that fit into the lid fitting holes 12, 12 are formed on the side wall in the front-rear direction. is there.

The metal fitting main body 2 to be housed in the container body 1 bends a stainless steel thin plate into a “U” shape to form the upper side wall 24 and the lower side wall 26, and then the tip portion of the upper side wall 24 is connected to the base wall 22. Bend diagonally downward to the side, form the tip of the wire pressing claw 21, and further, cut the upper surface side of the tip by about 45 ° to sharpen the tip angle to 45 °. The tip portion of the lower side wall 26 is bent in a dogleg shape so that the bent portion 23 faces the base wall 22 side, and the bent portion 23 is formed so as to press the electric wire, as shown in the figure. The unit body 2P of the metal fitting main body 2 having a different shape is formed. That is, this metal-based unit 2P is a metal-based unit having two wire passage guide holes 25, two wire pressing claws 21 and two wire pressure contact bending portions 23.

The conductive plate 3 is made of a copper alloy strip having substantially the same dimensions as the inner surface dimensions of the upper and lower side plates of the metal fitting main body 2, and is formed into a corrugated plate shape that is uneven in the longitudinal direction. It is obtained by cutting the formed product to a predetermined size. That is, as shown on the left side of FIG. 1, the conductive plate 3 of this embodiment is formed in a shape having four recessed grooves 3a ... On one surface.

In order to manufacture the connector for four electric wires shown in this embodiment, first, two unit bodies 2P having two electric wire pressing claws are provided as clearly shown in FIG. , 2P are arranged side by side in the horizontal direction as shown by the arrow A to form the metal fitting main body 2, and the four recessed grooves 3a are formed in these two unit bodies 2P, 2P arranged in parallel. As shown by the arrow B, a sheet of conductive plate 3 is inserted laterally between the electric wire pressing claw 21 and the base wall 22 facing the electric wire pressing claw 21, and After being sandwiched between the opposing base wall 22 and the metal body 2 composed of the two units and the conductive plate 3, the container body 1 is held as shown by the arrow C while keeping the sandwiched state. Insert it into the inside of the container body 1 from the opening 11 of the As shown by D, the lid 4 having the four wire guide holes 41 is press-fitted into the opening 11 of the container body 1, and the laterally long protrusion 42 is fitted into the laterally long lid fitting hole 12 of the container body 1. Combine and fix.

As shown in FIGS. 2 to 4, the connector manufactured in this manner has the wire pressing claws 21 ... Inside the container body 1 having a bottomed rectangular tube and formed of a synthetic resin material. The metal fitting main body 2 composed of two unit bodies 2P, 2P each having two pieces, and one conductive plate 3 having four recessed grooves 3a are formed by the conductive plate 3 and these two unit bodies 2P. , 2P across the entire width of the electric wire pressing claw 21 and the base wall 22 facing the electric wire pressing claw 21 and is housed inside the container body 1.

In order to connect a plurality of (up to four in this case) electric wires (not shown) to each other using the connector, the bare single-wire electric wire with the coating removed is removed from the lid body 4. The electric wire is inserted from the inner hole 41 of the wire proposal, and the tip end thereof is pushed through the electric wire passage guide hole 25 of the metal fitting main body 2 until it collides with the lower side wall 26 on the back side. By doing so, the inserted electric wire is pressed against the conductive plate 3 by the electric wire pressing claw 21 and the "dogleg-shaped" electric wire press bending portion 23, as already described, and the electric wire peripheral surface is Has a predetermined width in surface contact with the surface of the recessed groove 3a of the conductive plate 3. Further, the wire pressing claw 21 receives a retaining action. In this way, electrical connection is similarly established via the conductor plate 3 with the electric wire inserted from the other electric wire guide hole 41.

Although not shown, for example, a funnel-shaped electric wire passage formed in the metal fitting main body 2 has three electric wire guide holes 41 formed in the lid body 4 fitted in the container body 1. Even if it is a connector for connecting three electric wires with three guide holes 25, three electric wire pressing claws 21 and three electric wire crimping bent portions 23, other two electric wire connections, five electric wire connections It is also possible to similarly form a connector for connection of 6 wires, connection of 6 wires, connection of 8 wires, and the like.

Although the embodiments considered to be typical of the present invention have been described above, the present invention is not necessarily limited to only the structures of these embodiments, and has the above-mentioned constitutional requirements of the present invention, and The object of the present invention can be achieved and the invention can be appropriately modified and implemented within a range having the following effects. For example, instead of the corrugated bent plate, the conductive plate 3 may be a thick plate material having a semicircular or V-shaped groove on its surface, a flat plate-shaped one, or the bottom of the container body 1. An air flow port for discharging hot air is formed, or the container body 1 is provided with an electric wire guide hole 41 so that the bottom portion is opened to fit the lid body. Any modification such as forming the body 4 opaque or transparent can be performed.

[0019]

[Effect of device]

 As is apparent from the above description, the connector of the present invention is capable of making a good electrical connection with another electric wire through the conductive plate simply by inserting a bare single-wire electric wire. However, since the tip of the wire pressing claw, which is mainly made of metal fittings, has a configuration in which the upper surface side is inclined and cut to form a sharpened shape, the pressing action on the wire is sufficient. In spite of its performance, it has good biting performance to the wire, and when an external force is applied to the wire in the pull-out direction, it securely bites into the wire to reliably prevent it from moving in the exit direction, and the wire accidentally comes out. It has come to be possible to expect a remarkable effect that it can be surely prevented.

[Brief description of drawings]

FIG. 1 is an overall exploded perspective view showing an embodiment of the present invention.

FIG. 2 is an external perspective view of the product of the embodiment.

FIG. 3 is a side view of the same.

FIG. 4 is a central longitudinal sectional view passing through the electric wire guide hole.

[Explanation of symbols]

 (1) Container body (2) Main body of metal fittings (3) Conductive plate (4) Lid (11) Opening (21) Wire pressing claw (22) Opposite base wall (25) Wire passage guide hole (41) Wire guide hole

Claims (1)

[Scope of utility model registration request] 1. A wire connector for inserting single wires from the same direction to electrically connect the wires to each other, the container body (1) having a bottomed rectangular tube and made of a synthetic resin material, and the container body.
A metal fitting internally provided inside (1), which is mainly made of a hard metal having a plurality of electric wire pressing claws (21) ... (2), a conductive plate (3) made of a good conductor, and a container body (1 ) Is a lid made of a synthetic resin fitted and fixed to the opening (11) and having a plurality of wire guide holes (41) for guiding the tip of the wire (4),
The wire pressing claw (21) formed on the metal fitting main body (2) is bent and projected from the upper side of the base wall (22) of the metal main body (2) toward the front side of the upper side wall (24). A wire connector in which the side is bent downward in a slanting direction toward the base wall (22), and the top surface side of the tip end thereof is slantly cut to form a sharpened shape.