JPH0357012Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a wire connector, and more particularly, to a wire connector for connecting twisted wire type electric wires.

[Prior Art] Conventional wire connectors can connect wires by simply inserting the stripped end of a single-rod wire;
They are widely used as built-in devices such as electrical outlets and plugs. However, conventional wire connectors cannot be used with stranded wires because stranded wires are too soft.

Therefore, a wire connector for stranded wires has been developed and proposed, which allows a secure connection by simply inserting stranded wires.

Figures 6 to 9 are from U.S. Patent No. 4397518.
This shows an electric wire connector for stranded wires disclosed in Publication No. (August 9, 1983), which was filed by the inventor of the present invention.

The electric wire connector for stranded wires shown in FIG. 6 is implemented as a plug-in plug for home appliances, and includes a hollow housing 6 having approximately the shape of a plug, and a housing 6 that is slidably and loosely fitted inside the housing 6. The pusher body 7 is inserted into the housing 7 from the inside to the outside in order to separately connect the pusher body 7, the spring member 8 that elastically loads the pusher body 7 so as to be slidable relative to the housing 6, and the energized wire and the neutral wire. A conductive piece 9 is implanted so as to penetrate the body 7.

FIG. 7 is a diagram showing the state in which the pusher body 7 is pushed into the housing 6. As shown in the figure, when the compression spring adopted as the spring member 8 is compressed, the pusher body 7 is pushed from the upper end to the side end. The two drilled wire insertion holes 70 match the connection holes 90 opened in the insertion body 7 of the conductive piece 9, and the upper end of the wire end storage hole 60 recessed toward the side end inside the housing 6. It is also formed to match the opening.

Therefore, as shown in FIG.
When the spring member 8 is extended, the end of the stranded electric wire with the insulation coating removed will fit into the connection hole 90
It is sandwiched between the housing 6 and both ends of the lower surface of the housing 7, and the wire ends are inserted into the wire end storage holes 60 to be fixed. Note that the end of the stranded electric wire from which the insulation coating has been removed is shown to be extremely thin in order to emphasize that it is a soft and thin stranded wire.

[Problems to be solved by the invention] However, with the above-mentioned stranded wire connector, if the stranded wire with the insulation coating removed is too thick or too hard, it becomes extremely difficult to use. or become unusable.

In addition, as shown in FIG. 9, if the stranded wire with the insulation coating removed is too thick or too hard, the wire that has passed through the connection hole 90 of the conductive piece 9 may be One point A and one point B of the connection hole 90
The wire connection was insufficient because the wires would be stuck just by touching the wire.

The present invention was developed in view of the above-mentioned drawbacks of the conventional wires, and provides a wire connector for stranded wires that can be used to insert and secure even thick and hard stranded wires, thereby providing a sufficiently firm wire connection. The purpose is to

[Means for Solving the Problems] In order to solve the conventional problems and achieve the above-mentioned objects, the present invention includes a hollow housing, a spring member elastically loaded inside the housing, and at least one spring member. A conductive piece that has at least one hole fixedly attached to the housing and has a connecting hole for passing the stripped end of a wire-type electric wire near the housing. An electric wire connector comprising: lowering the closet body and passing the wire end through the wire insertion hole and the connection hole, and then returning the closet body to a raised position to hold the electric wire in contact with the conductive piece; A locking slider is provided that is slidably interposed between the pusher body and the connection hole of the conductive piece and has at least one wire guide groove recessed in the upper surface, and the pusher body compresses the spring member and the housing. When pushed into the inside of the conductive piece, the connecting hole of the conductive piece is sandwiched between the electric wire insertion hole of the pushing body and the electric wire guide groove of the locking slider.
After the end of the stranded electric wire from which the insulation coating has been removed passes through the communicating hole, when the push-in body and the locking slider are moved to the pushing side, conductive contact occurs with the lower end of the wire guide groove of the locking slider. Hold the wire between the upper end of the conductive piece and bend it downward, pass it through the connection hole of the conductive piece, and after passing through, bend it upward and connect the upper end of the conductive piece to the edge of the wire insertion hole of the closet body. To provide an electric wire connector for stranded wires, which has a structure in which the electric wire is held in contact with a conductive piece and held in contact with a conductive piece by bending the electric wire downward.

Further, in the present invention, the pusher body is provided with a wire bending protrusion between the connection hole of the conductive piece and the wire end storage hole, and when the electric wire is held, the electric wire bending protrusion and the electric wire of the holding slider are attached. The present invention provides an electric wire connector for stranded wires formed so that the lower end portion of the guide groove starts to engage the electric wire at approximately the same horizontal position.

[Function] In order to be able to insert and secure thick and hard stranded wire type electric wires in the stranded wire electric wire connector according to the present invention and to make a sufficiently firm electric wire connection, the following steps are required: As shown in FIG. By engaging at a point, a strong connection can be made between the stranded wire and the conductive piece 9.

In the electric wire connector for stranded wires of the present invention having the above configuration, a wire bending protrusion for bending the electric wire in a direction opposite to the direction in which the electric wire enters is attached to the outlet of the electric wire insertion hole of the closet body. By loosely fitting a movable locking slider into the interior of the connecting hole 90, the stranded electric wire passing through the connecting hole 90 can be locked at two points on the same horizontal line with the connecting hole 90 as the center. As a result, even thick and hard stranded wires can be firmly connected.

[Example] Examples related to the present invention are shown in Figures 1 to 5 below.
A detailed description will be given based on the drawings shown in the figures.

The electric wire connector for stranded wire according to the present invention shown in FIGS. 1 to 5 above is implemented with a plug-in type plug, and includes a housing 1 having the shape of a plug and a housing 1 that can be moved inside the housing 1. a spring member 3 using a compression spring that elastically loads the closet body 2 so that it can be pushed inside the housing 1; Two conductive pieces 4, 4 are implanted in the housing 1 so as to protrude outside the housing 1, their upper bodies are inside the closet body 2, and their leg parts loosely pass through the closet body 2. and a locking slider 5 which is vertically disposed below the lower end of the closet body 2.

The housing 1 has a hollow interior that almost corresponds to the outer shape of the closet body 2, and has wire end storage holes 10, 1 on both sides of the figure for storing the tip portions of the electric wires.
0 is recessed. Moreover, between the line end storage holes 10 and the line end storage holes 10, there is a
A spring hole 12 for holding one end of the spring member 3 is recessed. Furthermore, although not shown in detail, the opening on the top surface of the housing 1 is provided with a locking protrusion 14 along the inside edge of the opening.

The closet body 2 has wire insertion holes 20, 20, the number of which are equal to the number of insertion wires, formed from the upper end toward the wire end storage holes 10, 10 of the housing 1. A spring receiver 22 recessed upward is provided approximately at the center of the lower end surface. Also, spring receiver 2
On both sides of 2, loose through holes 24 are formed in the vertical direction through which the conductive pieces 4, 4 and a portion of the locking slider 5 loosely pass through. On the outside of the free through hole 24, electric wire bending protrusions 26 are provided, each of which has an acute-angled protrusion at a portion closer to the free through hole 24. and,
On the outer periphery of the portion projecting from the housing 1 in the upper part, locking bodies 28 are added that correspond to the locking protrusions 14 of the housing 1 and lock each other.

Note that since this embodiment is implemented in a plug for household electrical equipment, two wire end storage holes 10 and two wire insertion holes 20 are provided.

The spring member 3 utilizes a coiled compression spring, and is held by inserting its lower end into the spring hole 12 of the housing 1, and at the same time holds the spring member 3.
By inserting the upper end into the spring receiver 22 of the housing 1, the pusher body 2 is elastically mounted so as to be able to reciprocate in the vertical direction within the housing 1.

The conductive pieces 4 are molded from a good conductive material such as a copper piece, and are implanted in the housing 1 in the same number as the number of electric wires to be inserted, and in this embodiment, two conductive pieces 4 are implanted. Then, the upper end portion is loosely penetrated into the loose through hole 24 of the pusher body 2, and a connecting hole 40 is provided near the loosely penetrated portion through which the end of the stranded electric wire whose insulation coating has been peeled off passes. Its lower end part projects out of the housing 1, since this embodiment is implemented as a plug.

The locking slider 5 is loosely fitted inside the closet body 2, and as shown in FIGS. 2 and 3,
It has a U-shaped opening with the opening facing downward. Wire guide grooves 50, 50 are recessed in the diagonally downward direction at both ends of the upper body part, and sliding foot parts 52, 52 are vertically provided in the leg parts on both sides of the lower part, and the free through holes of the closet body 2 are provided with sliding feet 52, 52. It is penetrated by 24. Further, the lower ends of the wire guide grooves 50, 50 are connected to pressure contacts 54, 54, respectively.
It is said that

Therefore, the upper end of the wire bending protrusion 26 attached to the pusher 2 and the pressing points 54, 54 of the wire guide grooves 50, 50 recessed in the locking slider 5 are aligned as shown in FIG. , are arranged on a substantially horizontal straight line with the upper sides of the conductive pieces 40 and 40 in between, so that the head L shown in FIGS. It will be canceled.

Next, the operation of this embodiment will be explained.

In FIG. 4, when the pusher body 2 is pushed down in the direction of arrow F and the spring member 3 is compressed, the locking member 2 of the pusher body 2 engages with the locking protrusion 14 of the housing 1.
8 is locked, the pusher body 2 is temporarily fixed inside the housing 1 in the state shown in FIG. 4. Then, as shown by arrow C indicated by a two-dot chain line, the wire insertion holes 20, 20, the wire guide grooves 50, 50 of the locking slider 5, the connection holes 40, 40 of the conductive pieces 4, 4, and the wire end of the housing 1 are connected. The storage holes 10, 10 come to communicate with each other. Then, the twisted wire type electric wire to be connected can be inserted along the path indicated by arrow C.

However, the insertable stranded wire has a diameter smaller than the diameter D formed by the upper end of the connection hole 40, 40 and the lower end of the wire guide groove 50, 50. limited to. In other words, to insert a thicker stranded wire,
The design may be such that the diameters D, D, the diameters of the wire insertion holes 20, 20, and the diameters of the wire end storage holes 10, 10 are made larger.

After the stranded electric wire is inserted by the above operation, when the locking protrusion 14 and the locking body 28 are disengaged, the upper surface of the spring receiver 22 of the pusher body 2 and the upper end of the wire bending protrusion 26 Since they are formed so as to be on almost the same horizontal line, when the upper surface of the spring receiver 22 rises by the vertical distance S, the upper ends of the wire bending protrusions 26, 26 and the pressure contact points 54, 54 of the locking slider 5 becomes almost horizontal, contacts the stranded electric wire evenly, and starts pressure welding and bending. Then, the closet body 2
is pushed back by the spring member 3, and the stranded wire is folded back in the opposite direction by the wire bending protrusion 26, centering on the upper ends of the connection holes 40, 40 of the conductive pieces 4, 4, and is pressure-welded. and complete the folding.

Then, as shown in FIG. 5, connection holes 40, 4
The stranded electric wire, which is bent in the opposite direction by an angle of 180° around the upper ends of the wire ends, is further bent in the direction of wire entry at the upper ends of the wire end storage holes 10, 10 and the wire bending protrusions 26. Since it is held back in place, a reliable and solid wire connection can be achieved.

In addition, in order to insert thicker stranded wire,
Diameters D and D and wire insertion hole 2 shown in Figure 4
0, 20 and the diameters of the wire end storage holes 10, 10, the upper ends of the wire bending protrusions 26, 26 and the pressure contact points 54, 54 of the locking slider 5 are almost horizontal, as described above. Based on the feature of the present invention that the stranded wire contacts the stranded wire evenly and starts pressing and bending, the vertical distance S must also be increased by the increased diameter D. In other words, the longer the housing 1 becomes in the vertical direction in the figure, the thicker the twisted wire type electric wire can be connected to the housing 1.

[Effects of the invention] Since the electric wire connector for stranded wires according to the present invention is configured as described above, the following effects can be achieved.

By loosely fitting the locking slider between the housing and the pusher, the stranded electric wire with the insulation coating removed can be inserted in a nearly horizontal straight line centered on the connection hole of the conductive piece. direction and
Since it is formed so that pressure welding and bending start in the opposite direction of 180°, even thick and hard stranded wires can be connected reliably.

By attaching a wire bending protrusion integrally formed with the pusher body between the wire end storage hole and the connection hole of the housing, the bare wire bent in the opposite direction of 180 degrees is further moved in the entering direction. Since it is folded back at an acute angle, even thick, hard, stranded wires can be made into a sturdy wire connection.

Furthermore, since the upper end of the wire end storage hole of the housing and the wire bending protrusion engage the bare wire, a reliable and firm wire connection can be realized even with thick, hard, stranded wire wires.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing a preferred embodiment of the present invention, FIG. 2 is a cross-sectional view showing the push-in state of the closet body, and FIG. 3 is a front view of the locking slider according to the present invention. Fig. 4 is a plan view showing the locking slider, Fig. 5 is a sectional view showing the latched state of the stranded electric wire, Fig. 6 is a sectional view showing the conventional example, and Fig. 7 is shown in Fig. 6. FIG. 8 is a cross-sectional view showing the state in which the stranded electric wire of the conventional example is engaged, and FIG. 9 is an enlarged cross-sectional view of the main part of FIG. 8. 1... Housing, 2... Closet body, 3...
Spring member, 4... Conductive piece, 5... Engagement slider,
10...Wire end storage hole, 12...Spring hole, 14...
Locking protrusion, 20... Electric wire insertion hole, 22...
Spring receiver, 24... Free through hole, 26... Wire bending protrusion, 28... Locking body, 40... Connection hole, 50
... Wire guide groove, 52 ... Sliding foot portion, 54 ... Pressure contact, D ... Diameter (in which stranded wire can be inserted), S ...
...vertical distance.

Claims (1)

[Claims for Utility Model Registration] 1. A hollow housing, a push-in body which is elastically loaded inside the housing with a spring member, and has at least one electric wire insertion hole directed toward the inside of the housing, and the above-mentioned. At least one is fixedly attached to the housing,
and a conductive piece having a connection hole through which the end of the stranded wire whose insulation coating has been removed passes through, and after lowering the closet body and passing the wire end through the wire insertion hole and the connection hole,
An electric wire connector for returning a closet body to a raised position and holding an electric wire in contact with a conductive piece, the electric wire connector being slidably interposed between the connection hole of the closet body and the conductive piece, and having at least one electric wire guide on the upper surface. A locking slider with a recessed groove is provided, and when the pushing body compresses the spring member and is pushed into the housing, conduction occurs between the wire insertion hole of the pushing body and the wire guide groove of the locking slider. After the connection hole of the piece is brought into a communicating state where the wire is sandwiched, and the end of the stranded electric wire with the insulation coating removed is passed through the communication hole, the push-in body and the locking slider are moved to the pushing side. and, after catching the electric wire between the lower end of the electric wire guide groove of the above-mentioned locking slider and the upper end of the conductive piece and bending it downward, passing it through the connection hole of the conductive piece, and bending it upward after passing, An electric wire connector for stranded wires, in which the electric wire is held between the upper end of the conductive piece and the edge of the electric wire insertion hole of the closet body and bent downward to hold the electric wire in contact with the conductive piece. 2 The above-mentioned push-in body has a wire bending protrusion between the connection hole of the conductive piece and the wire end storage hole, and when the wire is held, the wire bending protrusion and the wire guide groove of the holding slider are connected to each other. 2. The electric wire connector for stranded wire according to claim 1, wherein the lower end portion is formed so as to start engaging the electric wire at substantially the same horizontal position.