JPS5934013Y2 - Mounting structure of small lamp socket - Google Patents

Description

[Detailed description of the invention] The present invention relates to a mounting structure for small lamp sockets such as glow lamp sockets used in fluorescent lamps, and uses a nut insertion groove provided in the small lamp socket. This is to prevent sink marks that occur on the surface of the synthetic resin cover during molding when a small lamp socket is attached by inserting a protrusion integrally molded into the synthetic resin cover.

Conventionally, when installing a glow lamp socket, etc., as shown in Figure 3, a cross section ○ provided on the side of the small lamp socket 1 is used.
There is one in which a nut 3 is inserted into a shaped nut insertion groove 2, and a screw 5 is screwed into the nut 3 through a main body 4.

However, since the work of inserting the nut 3 and the work of tightening the screw 5 required time and effort, a structure that could be easily installed was desired.

The present invention is in response to these demands, and can be easily installed using the nut insertion groove 2, and also solves the problem of sink marks during molding as described above.

An embodiment of the present invention will be described below.

In FIG. 1, 1 is a small lamp socket, and 2 is a nut insertion groove with grooves on four sides and a cross-shaped cross section, which is similar to that in FIG.

Further, 6 is a terminal, and 7 is a base insertion portion having a cylindrical opening.

Reference numerals 8 and 8' designate a pair of integral covers made of synthetic resin, and the inner surface of the integral cover 8 is formed with a cylindrical rib 9 and an insertion hole 10 which are brought into contact with the end surface of the base insertion part 7. A substantially U-shaped rib 11 and a protrusion 7 12 are integrally formed at right angles on the inner surface of '.

The protrusion 12 has protrusions (a) and (c) that are inserted into three sides of the nut insertion groove 2, and a cut arrow part 2 is formed on the back surface of the protrusion opening so that the width of the cut arrow part 2 is the width of the protrusion opening. The thickness a between the end face of the protrusion opening and the bottom face of the cutout part 2 is made to be equal to or less than the thickness of the cover unit 8'.

FIG. 2 shows the state after the above-mentioned components have been assembled, with the protrusion 12 inserted into the nut insertion groove 2 of the small lamp socket 1, and the end surface of the socket on the terminal 6 side abutting on the rib 11. , and the end face of the cap insertion portion 7 is brought into contact with the end face of the rib 9, and is held in place by combining the covers 8, 8'.

Note that 1' is, for example, a glow lamp, which is inserted into the base insertion part 7.

Next, the reason why the protrusion 12 is formed as described above will be explained.

Generally, in synthetic resin molding, the maximum wall thickness a of the protrusion 12 is
If the wall thickness of the cover 8' is made to be less than or equal to the thickness (a≦b), as shown in Fig. 2A, sink marks (indentations indicated by dotted lines) will occur on the surface of the integral cover 8' during molding, and the appearance will deteriorate. Getting worse.

Therefore, instead of simply turning the protrusion 12 into a protrusion (a) and (b), the maximum wall thickness is cut out to form the cut arrow part (2) so that the maximum wall thickness (a) satisfies the above-mentioned conditions. .

Although the small lamp socket 1 is sandwiched between the covers 8 and 8', the present invention is not limited to this embodiment.

As described above, the present invention has excellent effects in that it is extremely easy to install the small lamp socket 1, and there is no sink mark during molding on the surface of the integral cover 8' to which the lamp socket is installed. The small lamp socket 1 has a feature that it can be mounted using screws 5 and nuts 3 depending on the appliance as shown in FIG.

[Brief explanation of the drawing]

Fig. 11 is an exploded perspective view of the mounting structure of the small lamp socket of the present invention, Fig. 2A is a partially cutaway side view after assembly, Fig. 2B is a front view of the same, and Fig. 3 1 is a front view of a conventional small lamp socket mounting device. 1...Small lamp socket, Nut insertion groove, 8'...Cover integrated, 12...
··protrusion. 15 bites. C...Protrusion, 2...Notch.

Claims (1)

[Scope of utility model registration request] It consists of a small lamp socket 1 having a nut insertion groove 2 having a cross-shaped cross section with grooves on four sides, and a synthetic resin cover 8' having a protrusion 12 inserted into the nut insertion groove 2 at a right angle. The protrusion 12 has protrusions (a) and (c) that are inserted into three sides of the nut insertion groove 2, and a notch (2) is formed on the back surface of the protrusion opening so that the width of the cutout (2) is equal to the width of the cutout (2). A small lamp socket having a width equal to or more than the width of the mouth, and a wall thickness a between the end face of the protrusion mouth and the bottom face of the cut arrow part 2 equal to or less than the thickness of the cover integral 8'. Mounting structure.