JPH0334853Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement in a plug-in type connector that can easily and appropriately connect one end of an electric wire to another electric wire by simply inserting the electric wire.

[Conventional technology]

This type of plug-in connector has a structure in which a conductor consisting of a conductive plate that connects wires to each other and a spring piece that presses the wires against the conductive plate is installed inside a holder made of heat-resistant insulating material. Anyone can easily perform the wiring work by simply removing the coating from the connecting end of the wire to be connected and inserting the peeled part into the socket of the holder. Are known.

By the way, in the above-mentioned plug-in type connector, the holder in which the conductor is installed has generally been constructed of a cylindrical casing having a bottom portion with a wire insertion port and a cap body that closes the open end of the cylindrical casing. Alternatively, a case having a structure in which a conductor is placed inside a case divided into two and integrated with the two has been adopted.

[Problem that the invention attempts to solve]

However, the conventional holder structure described above not only has a complicated structure and poses problems in terms of moldability, but also has a large number of component parts.
This type of plug-in connector has drawbacks such as assembly problems and high costs, but it is possible to eliminate these drawbacks.
It is hoped that some kind of countermeasure will be taken.

[Means for solving problems]

In order to meet such demands, the plug-in connector according to the present invention is a holder that has a conductor inside that makes an electrical connection between wires by inserting a wire peeling part between a conductive plate and a spring piece. The housing is formed of a heat-resistant insulating synthetic resin material and has an internal space that opens toward the wire insertion side so that the conductor is fitted and held along the wire insertion direction. An elastic locking piece for preventing the conductor from coming off, which locks the opening side end of the conductor fitted into the internal space of the holder, is integrated into a part of the inner wall near the opening of the holder toward the inside of the holder. and a slit for cutting out the mold for forming this elastic locking piece is formed at a position corresponding to a portion near the inner wall of the holder at the end opposite to the wire insertion side of the holder. It is something.

[Effect]

According to the present invention, by simply using a pair of molding molds that are cut out on both sides of the electric wire insertion direction, the housing-like holder can be molded into the desired shape very easily and appropriately, and the holder can be It is also extremely easy to fit the conductor inside.

〔Example〕

Hereinafter, the present invention will be explained in detail using embodiments shown in the drawings.

FIG. 1 shows an embodiment of the plug-in connector according to the present invention. In the figure, reference numeral 1 indicates a conductive plate made of a conductive material and is curved to have a substantially wavy shape, and 2 indicates this conductive plate. A plate spring member formed by bending a conductive material into a substantially U-shape so as to be placed over the plate 1 from the direction along the waves,
This leaf spring member 2 has a plurality of electric wire insertion ports 3 at its base, and a plurality of spring pieces 4 which are pressed against the conductive plate 1 side are cut into both side surfaces of the plate spring member 2 in correspondence with each insertion port 3. It is formed in and,
The conductor 5 constituted by the conductive plate 1 and the leaf spring member 2 constitutes a plug-in connector by being placed in a holder 6 made of a heat-resistant insulating material.

Moreover, according to the plug-in connector having such a configuration, the peeled connection end 7a of the electric wire 7 (generally a single-core electric wire is used) is inserted into the holder opening 6.
a into the inside of the leaf spring member 2 through the wire insertion port 3 so that it faces between the spring piece 4 and the conductive plate 1, and further push the spring piece 4 in a bent state. It is electrically connected to the electric wire 7. That is, the peeled portion 7a of the electric wire 7 is held in pressure contact with the conductive plate 1 by the spring piece 4, thereby being electrically connected to the conductor 5 side. Then, by similarly inserting and fixing another electric wire (not shown) into this conductor 5, the electric wires 7 can be connected to each other. In this embodiment, a case where three electric wires can be inserted and connected is illustrated, but it is needless to say that the present invention is not limited to this.

Now, according to the present invention, the holder 6 that insulates and insulates the conductor 5 for connecting electric wires having the above-described structure is made of a single resin molded product integrally molded from a synthetic resin material having heat-resistant insulation properties. It is characterized by its structure.

That is, this holder 6 is
As is clear from the figure, the wire 7 can be easily and reliably molded using the molding molds 10 and 11 which are divided into two parts on both sides in the direction in which the electric wire 7 is inserted. To explain this in detail, the holder 6 has a substantially housing shape with an opening on the side where the electric wire 7 is inserted, and is configured such that the conductor 5 is fitted and fixed through the opening 6a. Elastic locking pieces 8 are provided on both sides of the inner wall of the holder 6 to lock the wire insertion side end of the conductor 5 that is fitted through the opening 6a as described above, thereby preventing it from coming off. , 8 are provided to protrude inward.

Here, in order to protrude the elastic locking pieces 8, 8 from the inner wall of the holder 6 as described above, there is a problem with the structure of the molding die, as is clear from FIG. Then, mold cutting slits 9, 9 are formed at the rear end of the holder 6, that is, at the end of the holder opposite to the wire insertion side, at a position corresponding to the inner wall of the holder, and the mold 11 protrudes from this part. Part 11a, 1
1a is extended into the holder 6, and the other mold 1
It is only necessary to cut out both sides of the protruding portion 10a that forms the internal space of the holder 6.

Furthermore, the presence of such a protruding portion within the holder 6 poses a problem when the conductor 5 is fitted into the holder. This problem can be solved by making the holder 6 protrude at an angle, by making the entire holder 6 from a flexible synthetic resin material, and by giving the elastic locking pieces 8, 8 the necessary elastic force.

The holder 6 having such a configuration can be used for forming a mold 1 divided into two parts as shown in FIG.
0.11, it can be molded very easily and appropriately, and its practical effects are great.

Further, the conductor 5 is fitted into the holder 6 formed in this way through the opening 6a on the front side, and the elastic locking pieces 8 are elastically deformed and pushed further inside, and the conductor 5 is inserted into the holder 6 formed in this way. By making the elastic locking pieces 8, 8 go over the elastic locking pieces 8, the elastic locking pieces 8, 8 are elastically restored, and the required locking state can be easily and appropriately obtained.

Note that the present invention is not limited to the structure of the embodiment described above, and the shape, structure, etc. of each part may be modified and changed as appropriate. For example, the conductor 5 that is fitted and held in the holder 6 according to the present invention is not limited to the structure of the above-described embodiment, and various modifications can be considered. In short, electric wire 7
Any structure may be used as long as it has a structure that allows it to be electrically connected to the conductive plate 1 by inserting the peeling part 7a and pressing and holding it by the spring pieces 4.

Further, in the above-described embodiment, a case has been described in which a pair of elastic locking pieces 8, 8 are provided protrudingly within the holder 6, but it will be easily understood that they may be provided only on one side.

[Effect of idea]

As explained above, according to the plug-in connector according to the present invention, the holder is made of heat-resistant and insulating synthetic resin, which is molded by a two-split mold that is cut out on both sides along the wire insertion direction. The holder is formed in the shape of a casing with an internal space that opens toward the wire insertion side so that the conductor for connecting the wire is fitted and held along the wire insertion direction by the material, and the holder has an inner space that opens toward the wire insertion side. An elastic locking piece for locking the end of the conductor on the opening side of the conductor and for preventing the conductor from coming off is integrally provided on the inner wall of the holder and protrudes inward of the holder, and a slit for cutting the mold for the mold is provided. is formed at the end of the holder opposite to the wire insertion side, corresponding to the inner wall of the holder, making it easy to mold the plug-in type connector despite its simple configuration with the minimum number of parts required. Not only can processing be performed extremely easily and reliably, but assembly is also simple, and there are various excellent practical effects such as a significant reduction in molding costs. Particularly, the present invention has the advantage that the conductor can be held in the holder internal space with sufficient strength to prevent it from coming off, even when the electric wire is inserted or removed.

[Brief explanation of drawings]

Fig. 1 is a schematic exploded perspective view showing an embodiment of the plug-in connector according to the present invention, Fig. 2 is a schematic sectional view for explaining the holder molding state, and Fig. 3 is a rear view showing the shape of the rear end of the holder. It is a diagram. DESCRIPTION OF SYMBOLS 1... Conductive plate, 2... Leaf spring member, 3... Inlet, 4... Spring piece, 5... Conductor, 6... Holder, 6a... Opening, 7... Electric wire, 7a... Connection end (separation part), 8... Elastic locking piece, 9... Slit for die cutting, 10, 11... Molding die.

Claims (1)

[Scope of utility model registration request] In a plug-in connector in which a wire inserted into the holder is clamped by a conductor disposed in a holder to connect it to another wire, the holder is made of a synthetic resin material with heat-resistant insulation so that the conductor is connected to the wire. The holder is formed into a casing shape having an internal space that opens toward the wire insertion side so that it can be fitted and held along the insertion direction, and a part of the inner wall near the opening of the holder is provided with a hole inside the holder. An elastic locking piece for preventing the conductor from coming off that locks the opening side end of the conductor fitted into the space is provided integrally protruding toward the inside of the holder, and a molding tool for the elastic locking piece is provided. 1. A plug-in connector, characterized in that a die-cutting slit is formed at an end of the holder opposite to the wire insertion side at a position corresponding to a portion closer to the inner wall of the holder.