JP4582845B2 - Wire connector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric wire connecting device applied to a power terminal block or the like used for a lighting fixture or the like.
[0002]
[Prior art]
A conventional example will be described with reference to FIGS. A bent piece 51 is bent at a substantially right angle at one end of a contact plate 50 formed of a strip-shaped rectangular conductive plate, and a locking piece 52 is formed by cutting the bent piece 51 toward the contact plate 50 side. 54 is a case, 55 is an electric wire insertion hole, 56 is an outer shape restricting portion of the case 54, and 57 is an electric wire.
[0003]
When the electric wire 57 is inserted between the contact plate 50 and the lock piece 52 through the cutout hole 58 of the lock piece 52, the outer diameter split lock piece 52 of the electric wire 57 is pulled out to the electric wire 57 so that it is separated from the cutout hole 58. Stop and lock.
[0004]
[Problems to be solved by the invention]
However, when the electric wire 57 is inserted in an oblique direction as shown in FIG. 10, the electric wire 57 may enter the side space instead of the locking piece 52.
[0005]
In addition, since the case 54 has an outer shape restricting portion 56 that restricts the outer shape of the terminal that is the contact plate 50, it is necessary to restrict at a plurality of locations, which is an obstacle to downsizing. That is, when the electric wire 57 is inserted obliquely at the time of connecting the electric wire, it is not sandwiched between the electric wire locking portion 52a of the locking piece 52 and the contact plate 50, but enters the side space portion of the locking piece 52 and is locked. Therefore, there was a risk of smoke or fire due to the disconnection of the electric wire 57 or incomplete connection.
[0006]
Further, since the positioning of the quick connection terminals is performed by fitting the outer shape of the terminal to the outer shape restricting portion 56 of the insulating case 54, a plurality of outer shape restricting portions 56 and the like are necessary, and the position is difficult to be regulated. Since the outer shape regulation is to fit the terminal outer shape to the insulating case 54, the member of the insulating case 54 is required outside the terminal, which is an obstacle to downsizing.
[0007]
Accordingly, an object of the present invention is to provide an electric wire connector that can prevent an electric wire from being inclined and inserted.
[0008]
[Means for Solving the Problems]
The electric wire connector according to claim 1 is provided with one contact plate that contacts one side of the inserted electric wire, and a pair of locks that are arranged side by side and press and hold the electric wire against the contact plate. A guide protrusion that protrudes at a position approximately between the pair of locking pieces on the contact plate and restricts the insertion direction of the electric wire; and a storage portion that stores the contact plate and the locking piece And the one contact plate is a belt-like rectangular conductive plate, the bent piece is bent at a substantially right angle at one end, and the pair of locking pieces are arranged on the contact plate side. formed side by side in the bent piece by causing switching in, which the tip of the pair of locking pieces is positioned alongside said one end on the contact plate, the pair located side by side the guide projection It stands between the tips of the locking pieces long position vital wire insertion direction on the contact plate cuboid shape Ri, it is formed integrally with the casing, and forming a long hole through which the said guide projection to the contact plate.
[0009]
According to the electric wire connector of the first aspect, since the connecting electric wire is guided by the guide convex portion and is prevented from entering a part other than the locking piece, the electric wire is surely inserted into the locking piece even if the electric wire is obliquely inserted. It is possible to prevent problems such as smoke and fire due to wire disconnection or incomplete connection.
[0010]
Further, the guide convex portion is formed integrally with the case, and the contact plate is formed with a hole through which the guide convex portion penetrates, so that the position regulation of the contact plate can be constituted by an insulating case that engages the contact plate. Since one guide convex portion can be used for both the rotation direction and the position restriction in the vertical and horizontal directions of the contact plate, the position can be easily restricted, and the outer shape restriction means of the contact plate can be reduced, thereby reducing the size.
[0012]
Further, since the guide convex portion has a substantially rectangular shape that is long in the electric wire insertion direction, and the hole is a long hole into which the guide convex portion is inserted , rotation of the guide convex portion around the protruding direction can be restricted.
[0016]
The electric wire connector according to claim 2 is the electric wire connector according to claim 1 , wherein the locking piece has a recess for positioning the electric wire at the tip.
[0017]
According to the electric wire connector of claim 2 , in addition to the effect similar to that of claim 1 , the effect of preventing the inclination of the electric wire is high in combination with the guide convex portion.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of the present invention will be described with reference to FIGS. That is, the electric wire connector includes a contact plate 1, a pair of locking pieces 2 and 3, a guide convex portion 4, and a case 5.
[0019]
The contact plate 1 is in contact with one side of the inserted electric wire 9, is formed of a strip-shaped rectangular conductive plate, and a bent piece 6 is bent at a substantially right angle at one end.
[0020]
A pair of locking pieces 2 and 3 are juxtaposed to press the electric wire 9 against the contact plate 1 and prevent it from being pulled out, and is formed by raising the bent piece 6 to the contact plate 1 side. The concave portion 7 for positioning the electric wire 9 is bent into a substantially inverted triangular shape.
[0021]
The guide convex portion 4 is provided so as to protrude at a position between the pair of locking pieces 2 and 3 on the contact plate 1 to regulate the insertion direction of the electric wire 9, and is formed integrally with the case 5. 1 is formed with a hole 8 through which the guide protrusion 4 passes. The guide convex portion 4 has a substantially rectangular parallelepiped shape that is long in the electric wire insertion direction, and the thickness in the short direction is equal to or less than the dimension between the distal ends of the locking pieces 2 and 3. Holes 8 Ru elongated hole der to pass fitting the guide projection 4. To case 5 includes a housing portion 33 for accommodating the contact plate 1 and lock piece 2,3.
[0022]
When the electric wire 9 is inserted from the cutout hole 25 of the locking piece 2 of the bent plate 6 and inserted between the locking portion 7 and the contact plate 1, the electric wire 9 is brought into contact with the reaction of the force by which the locking piece 2 is pushed up. Press against the plate 1 and lock it with the locking part 7. At this time, when the electric wire 9 is inserted while being inclined toward the locking piece 3, the tip of the electric wire 9 comes into contact with the guide convex portion 4 and the inclination is restricted, and the electric wire 9 is restricted from coming off the locking piece 2.
[0023]
The wire connector shown in FIG. 4 is applied to a power supply terminal block. The quick connection terminal 11 having the locking pieces 2 and 3 is provided at one end of the conductive plate 12, and another quick connection terminal portion 13 is provided at the other end. 14 is a quick connection terminal for grounding, and 15 is the ground tongue.
[0024]
The case 5 includes a resin body 16 and a resin cover 17. In the resin body 16, 18 is a wire insertion hole, 19 is a cover mounting claw, and 20 is a mounting claw. In the resin cover 17, 22 is an electric wire insertion hole, 23 is an unlocking hole, 24 is an electric wire insertion hole, and 25 is a claw locking hole.
[0025]
26 is a mounting plate, 27 is a square hole for locking the mounting claw 20, 28 is a hole for locking the ground tongue 15, 29 is a mounting screw hole, and 30 is a positioning protrusion (see FIG. (Not shown) is a fitting hole 31, and a mounting screw 31 is passed through the hole 29.
[0026]
According to the first embodiment, since the connecting wire 9 is guided by the guide convex portion 4 and is restricted from entering the portions other than the locking pieces 2 and 3, smoke or ignition due to wire disconnection or incomplete connection, etc. Can prevent troubles. The position regulation of the contact plate 1 can be configured by an insulating case 5 that engages with the contact plate 1, and the position regulation in the rotation direction (arrow R in FIG. 1) and the vertical and horizontal directions (arrows X and Y in FIG. 1). Therefore, the position can be easily regulated. Since the guide convex portion 4 has a rectangular shape, rotation around the protruding direction can also be restricted. The inclination prevention effect of the electric wire 9 is high due to the guide convex portion 4 and the locking portion 7.
[0027]
A second embodiment of the present invention will be described with reference to FIG. That is, by removing the column portion 35 (FIG. 3) between the locking pieces 2 and 3 of the first embodiment, and making a cut line in the middle of the cut and raised portion of the bent piece 6, 3, and the widths of the locking pieces 2 and 3 are increased. In this case, the distal end side of the locking portions 2 and 3 of the locking pieces 2 and 3 is formed narrow so that a part of the guide convex portion 4 is positioned between the locking pieces 2 and 3. . Others are the same as in the first embodiment.
[0028]
A third embodiment of the present invention will be described with reference to FIG. That is, in the first embodiment, the guide convex portion 4 protrudes from the cover 17 side of the case 5 to penetrate the hole 8, and the tip is fitted in the concave portion 36 provided in the resin body 16. Others are the same as in the first embodiment.
[0029]
【The invention's effect】
According to the electric wire connector of the first aspect, since the connecting electric wire is guided by the guide convex portion and is prevented from entering a part other than the locking piece, the electric wire is surely inserted into the locking piece even if the electric wire is obliquely inserted. It is possible to prevent problems such as smoke and fire due to wire disconnection or incomplete connection.
[0030]
In addition, the position regulation of the contact plate can be configured with an insulating case that engages with the contact plate, and the position regulation in the rotation direction and the contact plate in the vertical and horizontal directions can be shared by one guide convex part, so the position regulation can be easily performed and contact It is possible to reduce the size because the means for regulating the outer shape of the plate can be reduced.
[0031]
Furthermore , rotation around the protruding direction of the guide projection can also be restricted.
[0033]
According to the electric wire connector of claim 2 , in addition to the effect similar to that of claim 1 , the effect of preventing the inclination of the electric wire is high in combination with the guide convex portion.
[Brief description of the drawings]
FIG. 1 is a perspective view of an essential part of a wire connector according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view of a main part of the wire connector.
3A and 3B show a contact plate and a locking piece, in which FIG. 3A is a partial perspective view, and FIG. 3B is a partial side view.
FIG. 4 is an exploded perspective view of a power terminal block.
FIG. 5 is a perspective view of a main part of a second embodiment.
FIG. 6 is a cross-sectional view of main parts of a third embodiment.
FIG. 7 is an external perspective view of a conventional example.
FIG. 8 is a partial cross-sectional view thereof.
FIG. 9 is a perspective view of a main part in a normal connection state.
FIG. 10 is a partial cross-sectional view showing a state where the electric wire is inserted obliquely with respect to the locking piece.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Contact plate 2, 3 Locking piece 4 Guide convex part 5 Case 6 Bending piece 7 Recessed part 8 Hole 9 Electric wire 11 Quick-connection terminal 33 Storage part

Claims (2)

One contact plate that abuts one side of the inserted electric wire, a pair of locking pieces that are arranged side by side and press and hold the electric wire against the contact plate, and the pair of locking pieces on the contact plate And a case having a guide protrusion that protrudes at a position between the locking pieces and restricts the insertion direction of the electric wire, and a storage portion that stores the contact plate and the locking piece . The contact plate is a strip-shaped rectangular conductive plate, bent at one end at a substantially right angle, and the pair of locking pieces are formed on the bent piece by cutting the bent piece toward the contact plate. arranged is formed, which tips of the pair of locking pieces is positioned alongside said one end on the contact plate, the guide projections alongside the between the tips of the pair of locking pieces located a long substantially rectangular-shaped in a position vital wire insertion direction on the contact plate, formed integrally with the casing Is, wire connection device formed a long hole through which the said guide projection to the contact plate. Said chain Johen the wire connecting apparatus according to claim 1, further comprising a recess for positioning the wire in the tip.

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