JP2556938Y2 - Plug-in connector - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug-in connector which can simply and appropriately connect one end of an electric wire to another electric wire by simply inserting the electric wire.

[0002]

2. Description of the Related Art In this type of plug-in connector, a conductor made of a conductive plate for connecting wires and a spring piece for pressing the wire against the conductive plate is provided inside a holder made of a heat-resistant insulating material. It has a structure as described above. And
According to such a plug-in type connector, anyone can easily perform the connection work by simply stripping the covering of the wire connection end to be connected and simply inserting the peeled portion from the insertion port of the holder. Japanese Patent Application Publication No. 1-222828 and Japanese Utility Model Publication No. 1-29738, etc., have conventionally been known to have various structures.

[0003]

One of the necessities of the above-mentioned plug-in type connector is to recognize whether or not the connection by inserting the wire connection end into the holder is securely performed. May be configured to be able to perform the determination.

[0004] That is, if the insertion of the electric wire into the connector is insufficient, not only the required reliability of the connection between the electric wires is impaired, but also poor contact tends to occur.
The resulting heat may cause a fire accident. For this reason, conventionally, to prevent such insertion errors, the connector holder is formed of a transparent synthetic resin material, and a structure is adopted in which the connection state of the electric wires inside the holder can be visually checked. However, the transparent synthetic resin material is expensive in cost, and it is desirable to form the holder with an opaque material if possible.

[0005] Furthermore, as a work site for connecting electric wires using the above-mentioned plug-in connector, there are many dark sites where lighting is generally insufficient, for example, inside a ceiling or the like indoors. And the connection work by insertion of the electric wire in such a site is often performed by groping,
Even if the holder is made of the above-mentioned transparent synthetic resin material, it may be difficult to accurately recognize, determine, and grasp the connection state of the electric wires inside the holder. It is desired to take some measures that can eliminate the problems described above.

[0006]

In order to respond to such a demand, the plug-in connector according to the present invention provides an electric connection between the electric wires by inserting a wire peeling portion between the conductive plate and the spring piece. A plurality of cuts having a substantially U-shape are formed on one side surface of a holder formed of a synthetic resin material having heat resistance so as to have a substantially housing shape in which a conductor for connection is provided. An elastically deformable wire insertion status recognition piece is formed extending in the insertion direction corresponding to each wire peeling portion inserted into the holder, and a conductor is provided inside the holder at the tip of each of the recognition pieces. An engaging portion is provided which engages with the distal end of the wire peeling portion which is pressed and held and electrically connected and elastically deforms the recognition piece to the outside of the holder.

[0007]

According to the present invention, the sheath at the insertion end of the wire to be connected is peeled off, the peeled portion is inserted from the insertion hole of the holder, and is pressed and held by the conductor provided inside the holder. It is possible to make electrical connection with other electric wires, and when the inserted electric wire is pressed and clamped by the conductor, the distal end of the peeled portion of the electric wire engages with the engaging portion on the distal end side of the recognition piece, The recognition piece can be elastically deformed toward the outside of the holder, and the deformation state of this recognition piece can be checked visually or with a fingertip from the outside of the holder to check the insertion inside the holder as necessary. I can do it reliably.

[0008]

1 to 4 show one embodiment of a plug-in connector according to the present invention. In these drawings, the embodiment shows a type in which three electric wires 1 are connected. In addition, as these electric wires 1, a single-core electric wire is generally used, and the insertion ends to the connectors, which are the respective connection ends, are formed as peeling portions 2 by peeling off the insulating coating 1a, as is well known. Have been prepared.

As is apparent from FIGS. 1 to 3, a plug-in connector, generally designated by the reference numeral 10, has a holder 11 formed of a synthetic resin material having a heat-resistant and insulating property so as to have a substantially housing shape. And a cap 12 made of a synthetic resin material having heat-resistant insulation like the holder 11 so as to close the open end of the holder 11 which is open to the wire insertion end side. Three wire insertion holes 13 into which the peeling portion 2 of the wire 1 is appropriately inserted are formed.

The cap 12 is engaged with an appropriate retaining means 15 in a state of being fitted into the opening end of the holder 11, and is integrally formed. Also, cap 1
The wire insertion port 13 formed at 2 has a large diameter at the outer end side, and has a shape such that the wire 1 can be easily inserted.

Reference numeral 20 denotes an electric wire which is disposed in the interior space 14 closed by the cap 12 in the holder 11 so as to be slightly inclined in the electric wire insertion direction, and presses and holds each electric wire peeling portion 2 to press other electric wires. 4 (a) and (b) in FIG.
As is apparent from FIG. 1, a conductive plate 21 formed by bending a conductive plate material such as a tin-plated copper plate or the like into a required shape, and a tip attached to the bent portion 21a attached to the conductive plate 21 are formed. It is composed of two long and short spring pieces 22 and 23 for wire pressure welding made of a leaf spring material extending so as to be pressed against the portions 22a and 23a.

Here, such long and short spring pieces 22, 2 are used.
The use of 3 facilitates insertion when the wire peeling portion 2 is inserted, and secures a contact area on one long side,
While ensuring electrical connection, each tip 2
The reason for this is that the two portions 2a and 23a bite into the wire peeling portion 2 at two different places, so that it can be reliably prevented from coming off. In addition, 21b in FIG.
Is a fixing portion of the conductive plate 21 which is locked and held by caulking, 24 is an electric wire insertion hole formed in an elliptical shape or the like so that the electric wire 1 is inserted through the conductive plate 21, and 25 is The guide portion is formed by bending the conductive plate 21 so as to guide the electric wire 1 into the insertion hole 24.

According to the present invention, in the plug-in connector 10 having the above-described configuration, the holder 1
A plurality of cuts 31 having a substantially U-shape are formed on one side surface of each of the electric wire peeling portions 2 inserted into the holder 11.
In response to the above, an elastically deformable wire insertion state recognition piece 30 is formed to extend in the insertion direction, and the tip of each of the recognition pieces 30 is pressed and held by the conductor 20 inside the holder 11 to generate electric power. It is characterized in that an engaging portion 32 is provided to engage the tip of the electrically connected wire peeling portion 2 and elastically deform the recognition piece 30 to the outside of the holder 11. Here, the recognition piece 30 described above is
, The conductor 20 is formed on the side surface on the side of the spring pieces 22 and 23 of the conductor 20 which is arranged obliquely therein.

According to such a structure, the electric wire peeling portion 2 to be connected is appropriately inserted into the holder 11 from the insertion port 13 and pressed and held by the conductor 20 provided in the holder 11 to provide another connection. When the inserted electric wire 1 is pressed and clamped by the conductor 20, the electric connection between the electric wire and the electric wire can be made appropriately and reliably, as is clear from the state shown in FIG. 2 and the state shown in FIG. The distal end of the peeling portion 2 of the electric wire 1 is engaged with the engaging portion 32 on the distal end side of the recognition piece 30, and the recognition piece 30 can be elastically deformed toward the outside of the holder 11. Then, by confirming the deformation state of the recognition piece 30 from outside the holder 11 visually or with a fingertip, the insertion inside the holder 11 can be surely confirmed as necessary.

That is, as for the reliable insertion state of the wire peeling portion 2 into the connector 10, as is apparent from FIG. 1A, the tip of the wire peeling portion 2 is positioned at the leading end in the insertion direction of the holder 11. It is necessary to be inserted up to. For this reason, a recognition piece 30 having an engagement portion 32 that can be confirmed to be inserted into this portion is provided in a state capable of being elastically deformed with respect to the holder 11, and the deformation state is visually or externally observed from the holder 11. It is configured so that it can be easily confirmed by touching with a fingertip or the like.

Here, in the present embodiment, FIGS.
As is clear from FIG. 5, the recognition piece 30 which is always in a state of being lower than the outer surface of the holder 11 can be confirmed by being raised to almost the same surface on the outer surface of the holder 11 by insertion of the electric wire 1. It has become. But,
It is needless to say that the present invention is not limited to this, and may be configured to protrude outward from the outer surface of the holder 11. Also,
The amount of deformation of the recognition piece 30 depends on the electric wire 1 to be inserted.
Therefore, the shape of the engaging portion 32 and the protruding state of the recognition piece 30 may be appropriately set in consideration of the type of the electric wire 1 to be used.

The present invention is not limited to the structure of the embodiment described above, and the shape and structure of each part can be freely modified and changed. For example, the conductor 20 provided in the holder 11 according to the present invention is not limited to the conductor according to the above-described embodiment, and various modifications are conceivable. In short, any structure having a structure that can be electrically connected to the conductive plate 21 by inserting the peeled portion 2 of the electric wire 1 and pressing and holding the same by the spring pieces 22 and 23 may be used.

[0018]

As described above, according to the plug-in type connector according to the present invention, a heat-insulating property is provided in which a conductor for making electrical connection between wires is inserted by inserting a wire peeling portion. A plurality of cuts having a substantially U-shape are formed on one side surface of a holder formed of a synthetic resin material in a substantially housing shape, and are inserted in the insertion direction corresponding to the respective wire peeling portions inserted into the holder. Extending and forming elastically deformable wire insertion state recognition pieces, the tip of each of these recognition pieces is connected to the tip of the wire peeling section electrically connected by being pressed and held by a conductor inside the holder. Since the engagement piece that elastically deforms the recognition piece outside the holder is provided,
Despite the simple and inexpensive configuration, the electric wire peeling part is inserted from the insertion hole of the holder and pressed and clamped by the conductor, so that not only electrical connection with other electric wires can be made, but also When the electric wire is pressed and held by the conductor, the exfoliated end of the electric wire is engaged with the engaging portion on the recognition piece front end side, and the recognition piece is elastically deformed toward the outside of the holder. This deformation state of the recognition piece can be visually confirmed from the outside of the holder or with a fingertip or the like, and the state of insertion of the electric wire inside the holder can be easily and securely confirmed as necessary, which is a practically excellent effect.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a plug-in connector according to the present invention, in which (a) is a sectional view of a main part showing a state where an electric wire is inserted,
(b) is a plan view thereof.

FIG. 2 is a sectional view of a main part of the plug-in connector according to the present invention, showing a normal state in which no electric wire is inserted.

3 shows the appearance of the plug-in connector shown in FIG. 2,
(a) is a plan view and (b) is an end view thereof.

FIGS. 4A and 4B are schematic cross-sectional views illustrating a schematic configuration of a conductor exemplified in the present invention, and FIG. 4B is a side view thereof.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 wire 1a coating 2 wire peeling portion 10 plug-in connector 11 holder 12 cap 13 insertion port 20 conductor 21 conductive plate 22 spring piece 23 spring piece 24 wire insertion hole 30 recognition piece 31 U-shaped cut 32 engagement part

Claims (1)

(57) [Scope of request for utility model registration] An electric wire disposed in a holder formed of a synthetic resin material having a heat-resistant insulating property so as to have a substantially casing shape, and a peeled portion of an electric wire inserted by a conductor is pressed and clamped to form another electric wire. A plurality of cuts having a substantially U-shape are formed on one side surface of the holder, and the cutouts extend in the insertion direction corresponding to the respective wire peeling portions inserted into the holder. To form the elastically deformable wire insertion state recognition pieces, and engage with the ends of the wire peeling parts which are pressed and held by the conductor inside the holder and electrically connected to the tips of the respective recognition pieces. The plug-in connector has an engaging portion for elastically deforming the recognition piece to the outside of the holder.