JP2878666B2 - Tabletop - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a table tap provided with a blade receiving spring for receiving an insertion plug, and more particularly to a table tap in which a connection portion with an external electric wire is molded.

[0002]

2. Description of the Related Art In a table tap, an arc may be generated when a plug blade of an insertion plug is inserted into or removed from a blade receiving spring, and heat is generated at a contact portion between the plug blade and the blade receiving spring. Therefore, heat resistance and tracking resistance are required for the inner peripheral surface of the case in which the blade receiving spring is installed. Further, since the table tap is used movably, it may drop or hit another article, and the outer peripheral surface of the case is required to have impact resistance.

[0003]

However, it is difficult to satisfy heat resistance, tracking resistance and impact resistance with the same material. The present invention has been made in view of the above problems, and an object of the present invention is to provide a table tap that has both heat resistance, tracking resistance, and impact resistance and is easy to manufacture.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a pair of conductors each having a blade receiving spring and a pair of conductors formed of a material having heat resistance and tracking resistance. A wire connecting portion to which an outer wire of the conductor is connected, comprising an outer shell formed of a material having impact resistance and covering the outer circumference of the inner case over substantially the entire circumference; It is characterized in that it is formed so as to protrude from the conductor having a position outside the inner case and is covered with the outer shell.

According to the present invention, heat resistance and tracking resistance can be provided by the inner case, and impact resistance can be provided by the outer shell.
In addition, the connection between the conductor having the blade receiving spring accommodated in the inner case and the external electric wire can be performed at the electric wire connection portion protruding from the conductor and located outside the inner case and covered with the outer shell. .

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described. The table tap includes an inner case 10 formed of a material having excellent heat resistance and tracking resistance (generally, a thermosetting synthetic resin) and a relatively soft material having excellent impact resistance (generally, a thermoplastic synthetic resin). ), And an outer shell (not shown) that wraps the inner case 10 and a pair of conductors 32, 32.
0 is the body 12 to which the pair of conductors 32 is mounted.
And a cover 13 to be fitted to the body 12 by using a connecting member 14 such as an assembly screw or a rivet. Protrusions 15 are respectively formed at two places on the upper surface and one place on the front surface of the outer peripheral surface of the inner case 10, and a pair of blade insertion holes 11 are opened in these protrudes 15.

[0007] Both conductors 32 disposed in the inner case 10,
Reference numeral 32 denotes a blade receiving spring 3 at a portion corresponding to each blade insertion slot 11.
The wire connection portion 34 to which the external wire 30 is connected by crimping and crimping is formed at one end. Claw pieces 35, 35 are formed by cutting and raising in the longitudinal middle portion of each conductor 32. Both conductors 32, 32 are provided with locking holes provided in the body 12 with these claw pieces 35, 35. As shown in FIG. 2, it is fixed to the body 12 by press-fitting into the members 17 and 17. FIG. 4 shows a state in which the conductor 32 is stripped.
Reference numeral 19 in FIGS. 1 and 2 denotes a partition wall for separating the conductors 32 from each other in the body 12.

When the cover 13 is put on the body 12 to which the conductor 32 is fixed as described above, and the body 12 and the cover 13 are connected by a coupler, the electric wire formed at one end of the conductor 32 is formed. The connection portion 34 protrudes from one end of the inner case 10, and the external electric wire 30 is connected to the electric wire connection portion 34 in this state by caulking. The outer shell is formed by connecting the external electric wire 30 as described above and then secondary-molding the outer periphery of the inner case 10 to form the outer base 1.
5. Wrap the entire circumference except the surface. The crotch portion of the electric wire connection portion 34 and the external electric wire 30 is also covered with the outer shell.

Another example is shown in FIG. The basic structure is the same as that described above, but here the pair of conductors 32, 32
The two blade receiving springs 33, 33 are provided on one end side, one blade receiving spring 33 is provided on the other end side, and claw pieces 35, 35 are provided in an intermediate portion, and the external electric wire 30 is connected by caulking. Wire connecting portion 34 is provided so as to be located on the side of the claw pieces 35, 35. When incorporated in the inner case 10, the conductors 32, 32
34 is located on the side of the inner case 10. The electric wire connection portion 34 is covered by covering the outer shell after the external electric wire 30 is connected.

FIG. 8 shows a state in which the conductors 32 are cut off in this case. The width W is larger than that shown in FIG.
Is slightly larger, but the overall length L is considerably shorter, so that the area (W × L) of the plate required to form the pair of conductors 32, 32 is smaller, and the plate is cut with less loss. Can be. Of course, the conductors 32, 32
Can be made shorter in total length than conventional ones.

[0011]

As described above, according to the present invention, the inner surface of the case for accommodating the blade receiving spring is formed by the inner case, and the outer surface is formed by the outer shell. Can be provided by the inner case, the impact resistance can be provided by the outer shell, and the connection between the conductor having the blade receiving spring housed in the inner case and the external electric wire is made of a conductive material. Since it can be performed at the wire connection part that is protruded from the body and located outside the inner case and covered with the outer shell, it can mold the connection part with the external wire as a part of the outer shell. In addition, the inner case does not hinder the connection of the external electric wire to the conductor, and therefore, the manufacture is easy.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an inner case and a conductor according to an example of an embodiment of the present invention.

FIG. 2 is a perspective view of the same.

FIG. 3 is a perspective view of the same.

FIG. 4 is an exploded view showing stripping of the conductor according to the first embodiment;

FIG. 5 is an exploded perspective view of an inner case and a conductor of another example.

FIG. 6 is a perspective view of the same.

FIG. 7 is a perspective view of the same.

FIG. 8 is a developed view showing stripping of the conductor according to the embodiment.

[Description of Signs] 10 Inner case 30 External electric wire 32 Conductor 33 Blade receiving spring 34 Electric wire connection part

Claims (1)

(57) [Claims] 1. A pair of conductors having a blade receiving spring, an inner case formed of a material having heat resistance and tracking resistance and containing the conductor, and a material having impact resistance And an outer shell that covers the outer periphery of the inner case over substantially the entire periphery thereof, and an electric wire connecting portion to which the outer electric wire of the electric conductor is connected is protruded from the electric conductor having the blade receiving spring so that the inner case is formed. A table tap formed outside and covered with an outer shell.