JPS6335503Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a socket for a fluorescent light fixture.

First, we will introduce the conventional socket and its mounting structure.
As shown in the figure. Reference numeral 1 denotes a socket mounting member, and this socket mounting member has a chassis mounting portion 2 and a pair of left and right L-shaped holding legs 4 formed on a downward socket mounting surface 3, although not shown. It may be formed integrally with the chassis.

Next, the actuating body 6 in which the hole 5 for holding the terminal of the fluorescent lamp is formed is held in a slidable manner while biasing it to one side, and a contact plate (not shown) that contacts the terminal of the fluorescent lamp is housed. A socket main body 7 is provided whose top and back surfaces are open. The upper surface of this socket main body 7 is a joint surface 8 to the socket mounting surface 3, and a recess 9 is formed in the joint surface 8 for leading out the cord connected to the contact plate, and the back surface is covered with a back cover 10. ing. Grooves 11 are formed in both sides of the socket main body 7 and the back cover 10, so that the socket body 7 is held by the holding legs 4 so as to be slidable in the horizontal direction, and a downward stepped portion 12 is formed.

That is, the socket main body 7 and the back cover 10 attached thereto are held by the holding legs 4, and the joint surface 8 is joined to the socket mounting surface 3. Since the socket main body 7 is open so that the cord can be pulled out from the top, the legs 14 of the insulating cover 13 are engaged with the grooves 15 formed in the socket main body 7 and the back cover 10 to attach the insulating cover 13 to the socket. A live part protection means is provided for attaching the socket body 7 to the socket mounting surface 3 by interposing it between the surface 3 and the joint surface 8 or by simply sandwiching the baking plate.
As described above, if the live part protection means differ depending on the model, the position of the downward stepped portion 12 with respect to the socket mounting surface 3 will be different, resulting in a disadvantage that the socket main body 7 will not be compatible. In addition, the insulating cover 13 has legs 14
Because of this, a molded product must be used, which is uneconomical, and since the baking plate is merely clamped, variations in the clamping force result in an unstable mounting condition.

This idea was developed in view of the above points, and it protects the live parts with a simple sheet-like insulating plate, and also stabilizes the mounting condition, so that the socket can be installed regardless of whether the insulating plate is used or not. It is an object of the present invention to provide a socket for a fluorescent light fixture that has compatibility without changing the mounting conditions on the mounting surface.

This idea consists of an actuating body through which a terminal of a fluorescent lamp is inserted and held; one end of the actuating body located on the back side is a contact point that contacts the terminal; and the other end is placed on the top side to connect an external cord. A socket body is provided for housing a contact plate as a part, and the upper surface of the socket body, which is a joint surface to the socket mounting surface of the chassis, and the back surface located in the opposite direction to the operating body are opened, and the socket body is opened. A back cover for closing the back surface is attached to the back surface of the chassis, a pair of L-shaped holding legs facing each other are formed protrudingly on the socket mounting surface of the chassis, and a pair of holding legs are provided on both outer sides of the socket body, respectively. The engaging downward stepped portion is formed horizontally,
An insulating plate having elasticity and closing the upper surface of the socket body is provided, and grooves having substantially the same length as the insulating plate and holding both side edges of the insulating plate are provided on both inner surfaces of the upper surface side of the socket body. form,
The present invention is characterized in that guide portions are formed at the insertion side ends of these grooves to allow the insulating plate to be inserted in the longitudinal direction by bending the insulating plate and open upward. Therefore, an insulating plate is inserted into the groove of the socket body to protect the live parts, but since the insulating plate can be in the form of a sheet, the manufacturing process is reduced and costs can be reduced, and the insulating plate has elasticity. Since the insulating plate can be bent and inserted into the groove from the guide part, it can be easily inserted without removing the back cover, and the installation state can be stabilized. Since the insulating plate will be installed within the plane of the joint surface, it is configured to be compatible without changing the dimensions of the socket mounting surface and the downward step of the socket body, regardless of the presence or absence of the insulating plate. This is what I did.

An embodiment of this invention will be explained based on FIGS. 2 to 4. The same parts as those explained in FIG. 1 will be explained using the same reference numerals. 16
1 is a socket main body having an enlarged part 17 at the upper part, and this enlarged part 17 is opened upward and in the front and back, and both sides of the upper surface are used as joint surfaces 8 to be joined to the socket mounting surface 3. Further, the back surface of the socket main body 16 is completely open, and a back cover 18 is attached to the back surface with screws. In the socket body 16, an actuating body 6 is slidably fitted into a circular hole 20 while being biased by a spring 19, and a contact is provided that contacts terminals (not shown) of a fluorescent lamp for each pole. A plate 21 is provided so as to be biased in one direction by its own elasticity and a plate spring 22. The contact plate 21 is to which a cord 23 is soldered. Contact plate 21
Ribs 24 for holding the leaf spring 22 in a pinched state are formed on both inner sides of the socket body and on both sides of the central partition member 25. However, the socket body 16
A groove 27 into which a sheet-like insulating plate 26 is inserted is formed at a predetermined length inside the upper part of the groove 27 .
Guide portions 28 are formed at the insertion side ends of these grooves 27 on the back cover 18 side, and open while being inclined upward from the insertion side ends. Also, the socket body 16
A protrusion 30 is formed at the center of the upper part of the cord so as to partition the cord lead-out path 29. This protrusion 30 has a groove 31 into which one end edge of the insulating plate 26 is inserted, and fits into a notch 32 of the insulating plate 26 to stop the insulating plate 26 from moving laterally. In addition, a protrusion 33 formed on the insulating plate 26 is provided on the back cover 18.
An engagement hole 34 is formed that engages with the insulating plate 26 to stop the insulating plate 26 from moving laterally.

In such a configuration, the assembly of the socket body 16 and back cover 18 can be assembled into a socket by engaging the downward stepped portion 12 of the socket body 16 and the back cover 18 with the holding legs 4 shown in FIG. Attach to mounting surface 3. Prior to the installation work, when protecting live parts, insert both edges of the insulating plate 26 into the groove 27, and insert one edge into the groove 30 while engaging the notch 32 with the protrusion 30.
The insulating plate 26 can be reliably fixed by inserting the insulating plate 26 into the locking hole 34 and engaging the locking hole 34 while bending the protruding piece 33 on the other end. Further, when inserting the insulating plate 26, a guide portion 2 that opens upward at one end of the groove 27 is provided.
8, it can be easily inserted without removing the back cover 18. Thereby, the contact plate 21 and the cord 23 and the socket mounting surface 3 are insulated by the insulating plate 26, but since the insulating plate 26 is incorporated into the socket body 16 and is located inside the joint surface 8, Regardless of whether the insulating plate 26 is used or not, the dimensions of the downward stepped portion 12 and the socket mounting surface 3 can be made constant, and compatibility can be achieved. Further, since the insulating plate 26 is sheet-shaped, it can be manufactured very easily. By matching the dimensions of the notch 32 and the protruding piece 33, it is possible to cut the strip-shaped material without scraping it by simply cutting it.

Since this invention is constructed as described above, it is possible to use a simple sheet-like insulating plate to insulate between the socket and the mounting surface, and it is extremely easy to manufacture and to reduce costs. In this case, the insulating plate is assembled while being held in the grooves within the socket body, making it possible to stabilize the installation condition, and by forming a guide part on the insertion side of those grooves, it is possible to remove the back cover. In addition, whether or not an insulating plate is used, the dimensions of the downward step of the socket body relative to the socket mounting surface can be kept constant to ensure compatibility. It has the following effects.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing a conventional example, Fig. 2 is a longitudinal sectional side view showing an embodiment of the invention, Fig. 3 is an exploded perspective view showing the relationship between the insulating plate and the socket body, and Fig. 4. is an exploded perspective view of the socket body and the back cover seen from the back side thereof. 3... Socket mounting surface, 4... Holding leg, 6...
Actuating body, 8... Joint surface, 12... Downward step, 16
... Socket body, 18 ... Back cover, 21 ... Contact plate (contact), 26 ... Insulation plate, 27 ... Groove, 28
...Information department.

Claims (1)

[Scope of utility model registration request] An actuating body through which a terminal of a fluorescent lamp is inserted and held; one end of the actuating body located on the back side is a contact part that contacts the terminal, and the other end is arranged on the top side and serves as a connection part for an external cord. A socket body is provided for storing a plate, and the upper surface of the socket body, which is the joint surface to the socket mounting surface of the chassis, and the back surface located in the opposite direction to the operating body are opened, and the A back cover that closes this back surface is attached, a pair of L-shaped holding legs facing each other is formed protrudingly on the socket mounting surface of the chassis, and a pair of holding legs that engage with each of the holding legs are provided on both outer sides of the socket main body. The facing part is formed horizontally, and an insulating plate is provided which has elasticity and closes the upper surface of the socket body, and has substantially the same length as the insulating plate on both inner surfaces of the upper surface side of the socket body. Grooves are formed to hold both side edges of the insulating plate, and guide portions are formed at the insertion side ends of these grooves to allow the insulating plate to bend and be inserted in the longitudinal direction, opening upward. A socket for a fluorescent light fixture featuring: