JPS5831352Y2 - light fixture socket - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improved socket for a lighting device, and the improvement lies in the structure of integrating the socket and the holder.

The lighting fixture of Utility Model Publication No. 55-973, which was developed by the applicant earlier, is a socket in which the outer cylinder and the inner cylinder are connected by a connecting piece and are integrally molded, and the outer shell is molded into the inner cylinder of a metal holder using a ceramic material. is fixed with a set screw, so if the holder is used with gloves attached, there is no problem even if the heat of the incandescent bulb attached to the socket becomes high, but since the holder is made of metal, Also, since this lighting fixture is mainly used in bathhouses, it is necessary to attach a separate grounding terminal to the metal holder.
This has the disadvantage of requiring unnecessary labor during installation work.

Furthermore, even when connecting electric wires and sockets, there is an uneconomical wiring problem, such as the need for a joint to connect an external line and a multicore cord.

This invention eliminates the drawbacks of the conventional products as described above, and has a structure that saves materials, simplifies manufacturing, and facilitates wiring.

That is, the outer shell of the socket is divided into an upper half shell that houses the terminal fitting and a lower half shell that houses the light bulb holder.The upper half shell is integrally molded with the holder, and only the lower half shell is molded. It is made of ceramics.

In addition, the terminal fitting for connecting electric wires has been improved from the top screw connection method, and the base is bent at right angles so that electric wires can be connected with one touch. When the blades are pressed together and the wire is inserted between the two, the check blade has a spring piece bent at an angle of approximately 45 degrees so that the check blade resists the direction in which the wire is pulled out. The terminal fittings molded on the outer shell are held in place by the molded body with vertical grooves, and the combination of the upper half shell and the lower half shell is tightened by a tongue piece attached to the lower half shell. The socket is assembled by using the bolt for connecting the receiver and the terminal fitting to perform the electric circuit action and tightening action, and the upper half shell is covered with a cap with a wire guide hole. The structure is such that it is easy to insert the electric wire into the terminal fitting.

The specific structure will be explained below.

Example: The outer shell of an incandescent light bulb socket 1 is divided into an upper half outer shell a that accommodates a wire terminal fitting and a lower half outer shell that accommodates a light bulb holder, and the upper half outer shell a is formed. At this time, the glove holder C and the connecting piece 2 that serves as the instrument mounting seat are integrally molded around the upper half outer shell a, and the bottom surface of the upper half outer shell a is fitted into the lower half outer shell. When mating, a receiving part a' suitable for the mating position
is formed into a dish shape, and inside the upper half outer shell a are provided with partitions 3, 3' for arranging a pair of terminal fittings, and vertical grooves 4, 4' for holding check blades that are combined with the terminal fittings. The lower half outer shell to be combined with the upper half outer shell a is formed into a bottomed cylinder made of ceramics, and the upper half outer shell a is placed with the opening facing downward. It is joined to the dish-shaped receiving part a', and the combination of the two is tightened by the tongue piece 5 arranged at the center of the ceiling of the lower half outer shell.
and a bolt 7 that is inserted through the receiver 6 attached to the inner periphery of the opening.
．． 8 is inserted through the pre-drilled bolt holes in the upper half outer shell a and the lower half outer shell and tightened to the terminal fittings, and the electric circuit of both poles and the upper and lower outer shells a and l) are combined and tightened. The tips of the bolts 7 and 8 are placed facing the partitions 3 and 3', and are inserted into screw holes 9' and 10' drilled in the bent surfaces of the bases of the pair of terminal fittings 9 and 10. It is tightened by inserting a screw.

The ends of check blades 11 and 12 held in the vertical grooves 4 and 4' are pressed into contact with the end hole surface of each terminal fitting 9 and 10, and when the electric wire l is inserted between them, the electric wire l is This check blade has a spring material bent at an angle of about 45 degrees so as to lock the wire in the pulling direction, and when combined with a terminal fitting, it can be used as a wire connection device that does not require screws. .

The receiver 6 attached to the lower half of the outer shell is fixed to the ceiling of the outer shell by a set screw 6' in addition to the bolt 9, and the receiver 6 is loosened by the two stops when the light bulb is attached or removed. It has a unique structure.

The opening of the upper half outer shell a is covered with a cap d, which is fixed with a set screw 13. A protrusion 14 of a required diameter is formed overhanging the center of the surface of the cap d. In order to save material, the body 14 has an oval hole in the center, and the terminal fittings 9 and 10 and the check blade 1 are provided at the bottom of this hole.
A guide hole 15, 16 into which the electric wire 1 is inserted is formed between 1 and 12.

Note that 17 in the figure is a mounting screw hole drilled in the connecting piece 2.

When using the above lighting fixture socket, the installation is done by inserting the electric wire l drawn out from the panel through the through hole of the backing P and into the guide hole 15.16 of the cap d, and then inserting each terminal fitting 9, Press fit between 10 and check blade 11°12,
Connect the electric wire l to the socket 1, then insert the bolt 18 through the screw hole 17 of the connecting piece 2 of the holder C and tighten it to the panel, and then connect the internal thread 19 of the holder C to the external thread 20 of the opening of the globe G. The glove G is attached to the holder C by screwing together.

When attaching the glove to the above holder, an incandescent light bulb is attached to the socket, and a backing P' is attached to the outer screw base of the glove opening to ensure tightness when attaching the glove and holder. It is.

As mentioned above, in this invention, the socket outer shell is divided into upper and lower parts, and the holder is integrally molded on the upper half of the outer shell, but unlike conventional products, the holder is separately molded from metal. This holder eliminates the waste of materials and uneconomical processing that would be required to screw the completed socket into the holder, and the lower half outer shell is equipped with a tongue piece and a holder, making it one of the most popular sockets among sockets. Since this is the part where the highest heat is applied, only this part is made of a material that can withstand high heat, such as ceramics, and the socket is constructed without molding the entire outer shell of the socket from ceramics as in conventional products. The use of ceramics, which is expensive compared to plastic, was halved, saving materials and lowering the unit price of the entire lighting fixture.The upper and lower outer shells are divided into terminal fittings, tongue pieces, and receivers. Although the bolt that electrically connects the gold is used to tighten the upper and lower outer shells, it has two functions, but the socket and holder can be connected without the need for a set screw to tighten the holder and socket of conventional products. It has material and operational advantages that it can be constructed in one piece.

In addition, when attaching the electric wire to the terminal, it can be installed with one touch without the need for set screws, making it extremely efficient for wiring lighting equipment. This makes it ideal for connecting electrical wires to sockets.

In addition to the above-mentioned embodiment, it is also possible to combine the socket and the holder by interposing the central part of the connecting piece of the holder between the upper half outer shell and the lower half outer shell of the socket.

[Brief explanation of drawings]

Figure 1 is a vertical sectional side view of the main parts, Figure 2 is a bottom view of the socket, Figure 3 is a plan view of the socket with the cap removed, Figure 4
The figure is a perspective view of the terminal fitting portion, and FIG. 5 is a partially cutaway side view of the terminal fitting. In addition, the symbols in the figure 1...Socket, a...
・Upper half shell, b...Lower half shell, C...
...Holder, 2...Connection piece, 3, 3'...
...Spacing, 4.4'...Vertical groove, a'...
... Receiving part, 5... tongue piece, 6... receiving money,
6'...set screw, 7,8...pol),
9.10...Terminal fittings, 9', 10'...
...Screw hole, 11°12...Return blade, d...
... Cap, 13 ... Set screw, 15°16
...Guide hole, 17...Mounting seat screw hole, 18...Bolt, P...Backing, G...Globe, 19 ...Inner thread, 20...Outer thread, P'...Backing.

Claims (1)

[Scope of utility model registration request] In a lighting device in which an incandescent light bulb socket is fixed to a holder with a set screw, the outer shell of the socket is formed into an upper half shell that accommodates a wire terminal fitting and a lower half shell that accommodates a light bulb holder. The upper half outer shell is molded integrally with the holder, and the upper half outer shell has a partition for arranging a pair of terminal fittings and a check blade that presses against each terminal fitting. A molded body with vertical grooves is provided, and the lower half outer shell is molded into a bottomed cylindrical shape from a heat-resistant material such as ceramics, and the upper half outer shell is formed with the opening of the lower half outer shell facing downward. When assembling it to the bottom, a tongue piece is placed at the center of the ceiling of the lower half outer shell, and a holder is placed on the inner circumference side, and bolts are inserted into the tongue piece and the holder respectively, and the upper and lower outer shells are attached in advance. Insert the bolt holes drilled into the upper and lower outer shells so that the bolt tips face the sections where each terminal fitting is placed, and screw the bolts into the screw holes drilled in the bent surface of the base of the terminal fitting. In addition, hold the tip of the check blade, which is a spring piece bent at an angle of about 45 degrees, in the vertical groove so as to press it against each terminal fitting, and then pull out the wire with the tip of the check blade inserted. A cap is fixedly attached to the upper half outer shell with a set screw, and a protrusion in the center of the surface of the cap is formed to overhang, and this protrusion has a guide hole facing the terminal fitting. A lighting equipment socket made by drilling a pair of holes.