JPS5913696Y2 - porcelain socket - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the structure of a porcelain socket, and its purpose is to easily and reliably incorporate a switch mechanism.

Generally, sockets for mounting high-output lamps are made of porcelain and require heat resistance because they reach high temperatures during use.

However, porcelain sockets have variations in dimensions due to molding and poor dimensional accuracy, making it difficult to incorporate a switch mechanism.

The present invention has been made in view of the above points, and will be explained below based on the drawings.

1 to 4 show an embodiment of the present invention, in which 1 is a porcelain main body with a lamp storage hole 2 at the lower end and a recess 3 at the back.
4 is a cap made of porcelain, which has a recess 5 on the lower surface and a wire hole 6 on the back that communicates with the recess 5, and the wire hole 6 is inserted into the bottom of the recess 5. Terminals A21. to which the wires connected are respectively connected. B21' is attached, and a screw hole 22 is formed in each terminal A21, B21'.

Reference numeral 23 denotes a receiver into which the base of the lamp is screwed, and reference numeral 24 denotes a central contact piece that contacts the tip terminal of the lamp.

The switch mechanism 100 includes a substantially U-shaped support fitting 7, an insulating disc-shaped block plate 8 attached by inserting and caulking claws 9 at both ends of the support fitting 7 into square holes 10, and a knob 11 at the tip. is fixed to the core rod 13, which is inserted through and supported by both legs 30 of the support fitting 7, and is insulated from and rotates together with the rectangular contact fitting 12.
, a contact spring 15 that is attached to one leg 30 of the support fitting 7 with a screw 14 and makes elastic contact with the contact fitting 12; and a terminal fitting that is attached to the block plate 8 with a screw 17 and comes into contact with and separates from the contact fitting 12 by rotation thereof. 16, and a connecting tool 19 which has a substantially conical cylindrical shape with a tapered upper end and is provided with a plurality of notches 18 from its tip to provide elasticity.
9 is inserted through the elongated hole 20 of the block plate 8, and its base is held between the terminal fitting 16 and the block plate 8, and is attached with a screw 17 for attaching the terminal fitting 16, which is also inserted through the elongated hole 20. .

The switch mechanism 100 configured in this manner is housed in the recesses 3 and 5 formed by overlapping the cap 4 on the back surface of the main body 1, and has a screw 25 that passes through the center of the bottom surface of the main body 1 and attaches the center contact piece 24. It is fixed to the main body 1 with the support fitting 7.

However, the head is recessed into the recessed part 26 on the bottom of the main body 1, and the receiver 2
3 and the center contact piece 24, the mounting bolt 27 is inserted into the connector 19 against its elasticity and is screwed into one terminal A21 attached to the cap 4, and the holder 23 is attached. The bolt 28 passes through a sufficiently large hole 29 in the block plate 8, and is screwed into the other terminal B21'.
The main body 1 and the cap 4 are assembled together.

In this way, the terminal B21' is electrically connected to the receiver 23 via the mounting bolt 28, and the terminal A21 is electrically electrically connected to the terminal fitting 16 from the mounting bolt 27 via the connector 19. The screw 25 is passed from the contact fitting 12 that contacts and separates from the fitting 16 through the contact spring 15 and the support fitting 7.
conduction to the center contact piece 24.

By rotating the knob 11, the core frame 13 is rotated, and the contact fitting 12 and the terminal fitting 16 are brought into contact and separated, and the center contact piece 2
4 is opened and closed.

The present invention consists of the switch mechanism 10 which is divided into blocks as described above.
0 indicates recesses 3 and 5 formed between the main body 1 and the cap 4.
However, the dimensional accuracy of the main body 1 and the cap 4 is limited by simply attaching the support fitting 7, which is the load-side terminal portion of the switch mechanism 100, to the center contact piece 24 with the screw 25, which is a fitting. Even if it's a little bad, it's just one screw 25
Terminal A2 with the wire connected is possible.
1 is easy to assemble because the mounting bolt 27 between the cap 4 and the main body 1 is inserted into the connector 19 provided on the power supply side terminal part of the switch mechanism 100.
is imparted with elasticity and can provide reliable conduction without being affected by dimensional accuracy.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the present invention, FIG. 1 is a sectional front view, FIG. 2 is a bottom view, and FIG. 3 is an enlarged front view showing the connection state of the mounting bolt and the connecting tool. FIG. 4 is an exploded perspective view. 1...Body, 4...Cap, 100
...Switch mechanism, 19...Connection tool,
21...Terminal A, 27...Mounting bolt.

Claims (1)

[Scope of utility model registration request] A porcelain main body with a lamp storage hole having a receiver and a central contact piece therein, and a recess that is attached to the back of the main body and forms a switch storage space between the back of the main body, and the bottom surface of the recess A porcelain cap to which a pair of terminals A and B to which electric wires are connected are attached, and a switch mechanism built in the recess for opening and closing conduction between one terminal A and the center contact piece, Screw the mounting bolt that attaches the cap to the main body through the main body and screw it onto terminal B of the cap to connect terminal B and the receiver, and connect the switch mechanism to the power supply side terminal section connected to terminal A and the center contact piece. The load side terminal part is connected to the offshore center contact piece with a fitting and is attached to the main body, and the power supply side terminal part is equipped with a connecting fitting whose diameter expands and contracts with elasticity. A device made of porcelain, characterized in that a mounting bolt is provided, passes through the main body, is screwed onto terminal A of the cap, and attaches the main body and the cap together, and is inserted into the inside of the connector to connect terminal A and the power supply side terminal part. socket.