JPS6345739Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement in the terminal structure of the lead wire connecting portion, which allows the strip portion of the lead wire terminal to be connected to the terminal portion with one touch.

Conventionally, the terminal structure was such that the strip at the tip of the lead wire could be easily connected to the conductive plate terminal with one touch without soldering, by bending the conductive plate terminal and bringing the tip close to the terminal receiving surface. A device that was held facing each other was put into practical use.
In this terminal structure, when the strip portion at the tip of the lead wire is inserted from the front of the terminal portion, the strip portion is sandwiched between the tip of the bent portion and the terminal receiving surface to be connected and fixed. However, in such a terminal structure, when a large tensile force is applied to the lead wire, the strip may break at that point because the contact fixing part is a point contact.
Further, when a tensile force is constantly acting on the lead wire, there is a problem that the contact condition deteriorates over time.

This invention solves the above-mentioned drawbacks, and forms a pair of downwardly sloping and opposing sections in the conductive plate terminal section, and presses and fixes the tip of the lead wire to the surface of the section. The electric connection between the conductive plate terminal and the lead wire is ensured, and the convex portions provided near both sides of the pair of sections prevent the tip of the lead wire from shifting laterally.

Hereinafter, embodiments of this invention will be described with reference to the drawings.

FIG. 1 is an external perspective view of a lighting fixture component block body equipped with a terminal structure according to the invention, and FIG. 2 is a partially exploded perspective view of the terminal portion of the lighting fixture component block body.

The lighting fixture component block body of this embodiment is used as a switch for fluorescent lighting fixtures, etc. In Fig. 1, 1 and 2 are the upper block body and the lower block body made of plastic, respectively, constituting the component mounting body. The block body is shown, and numerals 3, 4, and 5 indicate a first glow lamp receiving portion, a miniature bulb receiving portion, and a second glow lamp receiving portion, which are integrally molded on the upper block body, respectively. A lamp fixing part such as a screw part is formed in each receiving part to fix a glow lamp or a miniature bulb. A switch body accommodating portion 6 for accommodating a switch main body (not shown) of a pull switch is integrally molded approximately in the center of the upper block body 1, and a switch lever 7 protrudes from a guide hole of the switch body accommodating portion 6. There is. Inside the block body formed by the upper block body 1 and the lower block body 2, there is a conductive plate terminal portion connected to the safety device and a lead wire 9 and a lead wire 20 of the socket 8 at both ends of the block body. The conductive plate terminal portions to be connected to each other are housed. These conductive plate terminal portions are composed of conductive plate patterns formed by press working. Note that the lead wires 9 and 20 are each 4
Consists of book leads.

The structure of the conductive plate terminal portion to which the lead wire 9 is connected will be explained with reference to FIG.

A convex portion 2a is provided at the end of the lower block body 2 along the lateral direction of the block body. The convex portion 2a has a lead wire receiving portion 2b that supports the lead wire.
is formed. A square opening 2c is provided near the lead wire receiving portion 2b. A conductive plate terminal portion 1 is provided on the inner surface of the lower block body 2 inside the convex portion 2a.
0 is placed. The tip of the conductive plate terminal portion 10 is bent at a right angle to form an abutment portion 10a that abuts the inner surface of the convex portion 2a. The abutment part 10a has a cutout part 10b into which a strip part of the lead wire can be loosely inserted.
is provided. Two cuts are made in the conductive plate terminal part 10 near the contact part 10a along the direction of the groove of the lead wire receiving part 2b, and the central part is further cut to form a section that slopes downward at the central part. 11
a and 11b are formed facing each other. Section 11
Both sides of a and 11b are bent upward to form substantially U-shaped protrusions 12a and 12b. Section 11
a, 11b and convex portions 12a, 12b are formed by press working. With the conductive plate terminal portion 10 placed on the inner surface of the lower block body 2, the tips of the pair of sections 11a and 11b fit into the opening 2c.

With the conductive plate terminal part 10 placed on the inner surface of the lower block body 2, the strip part 9b of one lead wire 9a of the lead wires 9 is inserted into the conductive plate terminal part 10 side from the contact part 10a. , the upper block body 1 is fitted in the inserted state. At the end of the upper block body 1, a recess 13 facing the lead wire receiving part 2b and a tongue-shaped projection 14 are formed inside the recess 13. With the upper block body 1 fitted into the lower block body 2, the recess 13 and the lead wire receiving portion 2b hold the lead wire 9a. Furthermore, the space between the recess 13 and the protrusion 14 bulges out slightly from the inner surface of the upper block body 1, so that when it is fitted, the strip part 9
Press down on a to bend it. Further, when the upper block body 1 is fitted, the protrusion 14 is connected to the pair of sections 11a, 1
1b and the protrusions 12a and 12b. The width of the projection 14 is the width of the projections 12a and 12b.
slightly narrower than the distance between. In addition, in order to firmly hold the lead wire, a recess 13 and a lead wire receiving part 2 are provided.
Claw-shaped protrusions are formed on each inner surface of b. The above terminal portion is provided for the lead wire 9a, and terminal portions having a similar structure are also formed for the other three lead wires. Note that the recess 13, the lead wire receiving portion 2b, and the like form the lead wire insertion port of the present invention.

The lead wire connection procedure at the terminal portion of the lead wire 9 having the above structure will be explained with reference to FIG. 3.

The conductive plate terminal portion 10 is placed on the inner surface of the lower block body 2 with the notch portion 10b of the contact portion 10a facing the lead wire receiving portion 2b, and the lead wire 9a is placed on the inner surface of the lower block body 2.
The strip portion 9b is inserted inward from the contact portion 10a and held above the pair of sections 11a and 11b. Similarly, while holding the strips of the other three lead wires above the pair of sections of each conductive plate terminal, fit the upper block body 1 into the lower block body 2 from above each conductive plate terminal. wear. By fitting the upper block body 1, the protrusion 14 is formed into a pair of sections 1.
It fits into the opening formed by the protrusions 1a, 11b and the convex parts 12a, 12b, and pushes the strip part 9b downward. The fitted state of this block body is
As shown in the figure. The strip portion 9b pushed down by the projection 14 is bent into a U-shape and comes into contact with the surfaces of the pair of sections 11a and 11b. This contact electrically connects the lead wire 9a and the conductive plate terminal portion 10. Further, since the strip portion 9b is pressed against the sections 11a and 11b by the protrusion 14, the lead wire 9a is firmly fixed. In addition, the recess 13
The strip portion 9b is connected to the abutting portion 10 due to the nearby step portion.
A better connection can be achieved by bending along a. Moreover, with the lead wire connected, the protrusion 1
Even if the strip portion 9b is laterally displaced in the width direction of the protrusion 14, the strip portion 9b is prevented from coming off the protrusion 14 by coming into contact with the protrusions 12a and 12b. Furthermore, lead wires 9 other than the strip portion 9b
The portion a is held by the recess 13 and the lead wire receiving portion 2b. The other three lead wires are similarly firmly fixed and electrically connected.

As described above, by holding the tip of the lead wire 9a above the pair of sections 11a and 11b and pushing down the tip with the protrusion 14, the lead wire 9a and the conductive plate terminal portion 10 are electrically connected and fixedly held. This makes connecting the lead wires easier and improves work efficiency. In particular, four lead wires can be connected at once by arranging four conductive plate terminal portions, placing the four lead wires above them, and fitting the upper block body.

As described above, according to this invention, a pair of sections that face each other in the direction of the lead wire insertion port and are inclined downward are formed on the conductive plate terminal part, and the tip of the lead wire located above the sections is formed. By pressing with the protrusion of the block body from above, the tip of the lead wire is pressed against the surface of the pair of sections and is fixed while maintaining good electrical connection, so the lead wire can be connected with a simple assembly work. It has the advantage of being able to do Also,
The protrusions provided near both sides of the section prevent the tip of the lead wire from shifting laterally, and the tip of the lead wire can be more firmly fixed and held. Moreover, the cut piece and the convex portion can be easily formed in the conductive plate terminal portion by cutting or pressing, and the structure can be simple and inexpensive.

[Brief explanation of drawings]

FIG. 1 is an external perspective view of a lighting fixture component block body equipped with a terminal structure according to the invention, FIG. 2 is a partially exploded perspective view of a terminal portion of the lighting fixture component block body, and FIG. 3 is a partially exploded perspective view of the terminal portion of the lighting fixture component block body. FIG. 4 is a partial cross-sectional view for explaining the lead wire connection procedure in the same terminal section. 1... Upper block body, 9b... (Lead wire 9
a) Strip part, 10... Conductive plate terminal part, 1
1a, 11b... (a pair of conductive plate terminal parts 10)
Sections, 12a, 12b... (conductive plate terminal part 10
) Convex portion, 14...Protrusion (of upper block body 1).

Claims (1)

[Scope of utility model registration request] In a lead wire connecting portion that connects a lead wire to the conductive plate terminal portion by fixing and holding the tip of the lead wire inserted from the lead wire insertion port in front of the conductive plate terminal portion, the conductive wire near the lead wire insertion port is connected to the conductive plate terminal portion. A notch is made in the plate terminal portion to form a pair of sections facing in the direction of the lead wire insertion port and sloping downward, and the section is bent in the width direction of the section and near both ends of the pair of sections. A block body having a convex portion formed by processing and a protrusion provided on the inside is fitted from above the conductive plate terminal portion, and the lead wire inserted from the lead wire insertion hole and located above the pair of sections is inserted into the conductive plate terminal portion. A terminal structure of a lead wire connection portion, wherein the tip is pressed and fixed to the surface of the pair of sections by the projection.