JPS6051792B2 - lamp socket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a socket for lamps such as downlights and key sockets.

A known example of this type of socket is Utility Model Publication No. 52-44475.
No. exists.

That is, an integral partition wall is formed in the middle of the insulating body to create upper and lower cavities, a lamp prong is placed in the lower cavity, a pair of wire connection terminal fittings are positioned in the upper cavity, and the receiving side is closed. Tighten one terminal fitting with a screw passed through the partition wall from the center contact plate, tighten it to the other terminal fitting with another screw passed through the partition wall from the center contact plate, and then tighten these two terminal fittings with the top cover. It is fastened to the cover body using two screws other than the aforementioned screws.

Therefore, not only four screws are required, but also two screws are used to tighten both terminal fittings, caps, and center contact plate, so the molded product may deteriorate due to the temperature rise during energization. As the heat shrinkage of a certain body was repeated, the screws became loosened, and due to poor contact, the temperature increased further due to the synergistic effect.

The present invention has been made in view of the above-mentioned points. Namely, the terminal fitting and the contact plate are integrated and housed in the upper cover, and this fitting is connected between the ceiling wall and the inner cover made of an insulating material. By clamping and tightening the top cover and body, the inner cover holds down the terminal fittings and the contact plate without using screws, and the cause of temperature rise is reduced by eliminating the need for screws to connect the two. purpose. The present invention will be described below with reference to the drawings showing one embodiment of the present invention. That is, the upper block X is
A top cover 1 made of an insulating material and consisting of a lower opening lc consisting of a ceiling wall 1a and an outer circumferential wall lb; a pair of electric wire connection terminal fittings 3 housed in an inner chamber 2 of this top cover 1; It consists of a central contact plate 4 and a cap contact plate 5 which hang down from the lower opening lc.

The inner chamber 2 further includes a partition wall 6 and a ceiling side wall 1d to form left and right chambers 2a, in which the terminal fittings 3 are housed separately.
Further, the embodiment adopts a so-called screw terminalless method in which the electric wire T is not tightened with screws, and specifically, a locking fitting 7 consisting of a locking piece 7a and an electric wire pressing piece 7b that prevent the electric wire T from coming off, It consists of a U-shaped metal fitting 8 consisting of upper and lower pieces 8a and 8b, and the central contact plate 4 and the contact plate 5 for the cap are integrally connected to an extension piece 9 of this U-shaped metal fitting 8 by a small seam, a spot, etc. There is. Therefore, the term "integrated" as used in "Lever" refers to a part that is made into a single block, rather than one that is punched out from a single piece of material. The locking fittings 7 are located one each on the left and right, and can be pulled in and sent out. A disconnection button 10 for the electric wire T is opposed to the lock piece 7a, and the button 10 is pushed up through a screwdriver insertion opening 11 formed in the outer circumferential wall 1b of the top cover 1.

Reference numeral 12 denotes a wire lead-in port provided in the outer peripheral wall 1b, and the wire lead-in and wire feed are provided in the same line.

The inner lid Y is made of an insulating material and has the following configuration.

That is, a horizontal wall 13, a downward central projecting wall 14, two upward parallel walls 15, and a central vertical groove 1 formed by these two parallel walls 15.
It's more familiar than 6.

Then, the partition wall 6 of the top cover 1 is fitted into this central vertical groove 16,
In addition, the two parallel walls 15 fit into the left and right chambers 2a and sandwich the terminal fitting 3 with the ceiling wall 1a.Therefore, the terminal fitting 3 has its upper and lower sides connected to the ceiling wall and the upper surface of the two parallel walls 15, and both sides thereof. Ceiling side wall 1d
and the partition wall 6. In the embodiment, the upper and lower pieces 8a and 8b of the U-shaped metal fitting 8 are sandwiched between the ceiling wall 1a and two parallel walls 15, but if the terminal metal fitting 3 is of a screw-type type, for example, It becomes a sandwich according to the shape. Further, the horizontal wall 13 is formed with a central notch 17 on both sides, from which the extension piece 9 of the terminal fitting 3 comes out. Ru. The three surfaces 17a, 17a, 17b of the central notch 17 and the ceiling side wall 1d surround the four peripheries, so that there is no wobbling in any direction. Therefore, even though the contact plates 4 and 5 connected thereto are not fixed with screws or rivets, they do not swing, and the connection with the lamp is ensured. The lower block Z is the base Ra of the lamp R.
The body 18 is made of an insulating material and includes an outer circumferential wall 18a into which the outer circumferential wall 1b of the upper cover 1 is inserted, and a receiving stage 19 for receiving the inner cover 13.

The cap Ra then contacts the cap contact plate 5, and the center contact Rb of the lamp R contacts the center contact plate 4. Thus, the upper and lower blocks X and Z are joined together by the fastener 20, and the inner lid Y is also fastened at the same time.

In addition, in the figure, it is a threaded rod, and there are screw holes 2 in the upper and lower blocks X and Y.
1 and 22, but of course a band type may be used instead of screws. Due to this connection, a stopper 23 is provided on the upper side of the center contact plate 4 to prevent the contact plate 4 from being excessively pushed and warped, and as shown in FIG. In FIG. 5, the inner lid Y is used, but either one is acceptable. Reference numeral 24 denotes a receiving part of the lamp R, which is made of a metal part separately made on the body 18, and an inner stage 25 formed on the outer circumferential wall 18a of the body 18 is held between upper and lower claws 24a.

Of course, the receiving portion 24 may be integrally molded. In the case of this metal part, in FIGS. 1 to 4, four holes 26 are bored in the receiving stage 19 according to the number of claws 24a, and a jig is inserted into the holes 26.
Note that it does not exist in FIG. Therefore, both contact plates 4 and 5 enter through this hole 26. Reference numeral 27 indicates a hole bored in the outer peripheral wall 18a of the body 18, and reference numeral 28 indicates a support hole for the lighting fixture 29.

As described above, the present invention integrates the pair of terminal fittings 3 and the center and cap contact plates 4 and 5 and stores them in the upper lid 1.
is sandwiched between the insulating inner cover Y and the ceiling wall 1a of the upper cover 1, and the inner cover Y is clamped between the upper cover 1 and the body 18.
Since each terminal fitting 3 and each contact plate 4, 5 are held down by a screw, no screws are required to connect the two terminals 3, 4, 5, thereby eliminating temperature rise due to loosening of that part and reducing screw tightening work. This improves work efficiency, and it is also possible to simply use one inner lid Y.
Since each terminal fitting 3 and each contact plate 4, 5 are held down by the terminal members, disassembly is also facilitated in case of trouble during assembly.

Furthermore, by providing the lead in and the feed in the same line and by providing the driver insertion port 11 in the outer peripheral wall 1b, it becomes easier to carry out the work of wiring the feed and releasing the electric wire. By providing the receiving portion 24 into which Ra enters, the central contact 4, which is a contact piece to the lamp R, is
, a base contact plate 5, and a receiving part 24 which is a holding part for the lamp R.
A lamp socket is obtained which prevents an electric shock accident when the lamp R is attached by electrically separating the lamp socket and the lamp socket.

[Brief explanation of the drawing]

The drawings show one embodiment of the lamp socket of the present invention.
The figure is a perspective view, Figure 2 is a sectional front view, Figure 3 is a sectional side view, Figure 4 is an exploded perspective view, Figure 5 is a diagram of a different embodiment, and Figure 6 is a diagram of a different embodiment.
The figure is an exploded perspective view. X...Top block, Y...Inner lid, Z...
...Lower block, 1...Top lid, 1a...
...Ceiling wall, 1b...Outer wall, 3...
...Terminal fitting, 4...Central contact plate, 5...
...Contact plate for base, 18...Body, 18a.
...Outer wall, 19...Support step, 23...
...deterrent. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1. A top cover made of an insulating material, which is made up of a ceiling wall and an outer peripheral wall, has a lead-in and a feed on the same line, has a driver insertion slot in the outer peripheral wall, and has a lower opening, and a pair of electric wire connection terminal fittings housed in the upper cover; An upper block is formed of a center contact plate and a cap contact plate that are integrated with the terminal fittings and hang down from the lower opening of the upper cover, and that fit into the lower opening of the upper cover and connect the terminal fittings to the ceiling wall. A lower block consisting of an insulating inner lid to be pressed, an outer peripheral wall that is combined with the outer peripheral wall of the upper lid and has a receiving part into which the lamp base is inserted, and an insulating body that is a receiving stage for receiving the inner lid. further characterized in that when the upper and lower blocks are tightened together, the contact plate for the base of the upper block contacts the lamp base of the lower block, and a deterrent body is opposed to the upper side of the central contact plate. socket.