JPS5920734Y2 - Light bulb socket mounting structure - Google Patents

Description

[Detailed description of the invention] This invention relates to a mounting structure for a light bulb socket.

The conventional mounting structure for light bulb sockets for signal lights has an annular mounting flange protruding from the cylindrical inner wall, a metal tube with threads engraved in the mounting flange is embedded, and a flat board is fastened with tightening screws. The conventional method was to attach the light bulb socket to the light bulb socket, but this method required a large number of parts for the light bulb socket mounting structure, increasing the cost.Furthermore, tightening screws were used to attach the board, which required screw-in work. The work requires a lot of man-hours, and since the light bulb is rigidly attached to the wall of the cylindrical body via a socket and a flat board, it cannot absorb any vibrations from equipment transmitted from outside, and the vibrations are transmitted to the light bulb. This caused the light bulb to break.

Therefore, this invention was made with the aim of solving the above-mentioned problems by arranging a guide/support protrusion on the inner wall of the cylindrical body, and guiding and locking the support fitting with the light bulb socket attached to the upright support leg onto the protrusion. It is something.

Hereinafter, this invention will be described in detail based on specific embodiments shown in the accompanying drawings.

The signal light indicates the open/close status of the circuit breaker, etc. A cup-shaped red lens 2 and a blue lens 3 are screwed onto the upper and lower ends of a cylindrical body 1, and a light bulb is inserted inside the signal light via a socket 4 and a support fitting 5. 6 is housed therein, and is connected to the bent tip of a pillar 7 which stands upright and has a bent upper portion.

The peripheral surface for guiding the support fitting on the inner wall of the cylindrical body 1 is formed into a semicircular guide surface 8a, and the lower end surface 8b is formed into a support plane 4.
The upper protrusions 8 are arranged at positions dividing the circumference into four equal parts.

Four lower protrusions 9 each have a semi-circular guide surface 9a as a circumferential surface for guiding the support fittings, and a support plane as an upper end surface 9b.
Arranged on the inner wall of the cylindrical body 1 so that the upper end surface 9b faces the lower end surface 8b of the upper protrusion 8, spaced apart in the axial direction by a distance l that is sufficient to receive the base plate of the support fitting, and offset from the upper protrusion 8 by about 30 degrees. do.

The support fitting 5 is made of a thin sheet metal, and the annular substrate 10 that slides on the inner periphery of the cylindrical body 1 has guide surfaces 8a and 9 with protrusions 8.9 on the outer periphery.
Notches 11 for sliding a are cut into four equal parts.

Incidentally, in order to facilitate insertion of the protrusions 8 and 9 into the notch 11, the tip portions are formed to have a small diameter.

Furthermore, cut-outs 12 and 12 for preventing rotation of the support fitting 5 are provided on the upper surface of the peripheral edge of the substrate 10 so as to be located on both sides of the guide surfaces 8a and 9a of the protrusion 8.9.

Furthermore, a support leg 13.degree. 13 for attaching the light bulb socket 4 is made to stand obliquely inward from the inner circumferential portion of the substrate 10 facing the notch 11, and a mounting hole 14 is formed by bending the tip into a planar shape.

A shield spring receiving part 15 is cut and raised horizontally on the oblique part of the supporting leg 13.

This support fitting 5 has a socket 4 with a bolt 16 and a nut 1.
7, and the light bulb 6 is attached to the socket 4.

In order to install the support fitting 5 to which the light bulb 6 is attached via the socket 4 into the cylindrical body 1, first the substrate 10 of the support fitting 5 is attached.
The notch 11 is made by sliding the outer peripheral surface of the cylinder onto the inner peripheral surface of the cylindrical body 1.
The upper protrusion 8 is inserted and placed on the upper end surface 9b of the lower protrusion 9.

Next, the substrate 10 is rotated while being pressed onto the upper end surface 9b of the lower protrusion 9, so that the raised cut 12 abuts the lower end of the guide surface 8a of the upper protrusion 8.

Furthermore, the board 10 is rotated while being pressed, and the cut-and-raised part 12 is passed under the lower end surface 8b of the upper projection 8, and the cut-and-raised part 12.12
are located on both sides of the guide surface 8a of the upper protrusion 8, and the supporting metal fittings 5
The rotation of the cylindrical body 1 is prevented.

On the other hand, the lower protrusion 9 is inserted into the notch 11 of the separate support metal fitting 5 into which the cylindrical body 1 is slid and inserted, and is brought into contact with the bottom surface of the base plate 10 of the support metal fitting 5 installed previously, and rotated while being pressed. The raised part 12 abuts against the lower end of the guide surface 9a of the lower projection 9.

Subsequently, the substrate 10 is rotated while being pressed to cut and raise it 12.
Pass over the upper end surface 9b of the lower projection 9 and cut and raise 12.1
2 are placed on both sides of the guide surface 9a of the lower protrusion 9, and the supporting metal fittings 5 are mounted inside the cylindrical body 1 to prevent rotation.

Note that the axial distance 1 between the lower end surface 8b of the upper protrusion 8 and the upper end surface 9b of the lower protrusion 9 is smaller than twice the plate thickness of the support metal fitting 5 in order to sufficiently install the support metal fitting 5 in the cylindrical body 1. Set it slightly longer.

As mentioned above, this device has a plurality of upper and lower protrusions arranged circumferentially at regular intervals on the inner wall, each having a peripheral surface as a guide surface and an end surface as a support plane. a cylindrical body arranged so that the respective end faces face each other and are spaced apart from each other in the axial direction by an extent that the base plate of the support fitting can be received, and shifted in the circumferential direction; and an annular base plate that slides on the periphery of the cylindrical body. A light bulb socket is mounted using a support bracket that has a notch to guide the protrusion, a locking cut-out on the upper surface of the board periphery, and a support leg that stands up from an opposing point on the inner circumference of the board to attach the light bulb to. structure, light bulb socket I.
No mounting screws or the like are used to mount the support fitting to which the holder is attached to the cylindrical body, which reduces the number of parts and reduces the cost.

Furthermore, since the support metal fitting can be attached to the cylindrical body by simply sliding it, inserting it, and rotating it, there is no need for a screw-in operation that requires many man-hours, resulting in a significant reduction in the number of man-hours required.

Furthermore, since the light bulb is attached to the support leg of the elastic support fitting, even if vibrations from the circuit breaker or the like are transmitted, the light bulb is absorbed by the support leg, and the possibility of the light bulb breaking due to vibration is greatly reduced.

[Brief explanation of drawings]

Fig. 1 is a vertical sectional view of a signal light showing a specific embodiment of this invention, Fig. 2 is a longitudinal sectional view of the cylindrical body shown in Fig. 1, Fig. 3 is a plan view of Fig. 2, and Fig. 4 is 1, FIG. 5 is a front view of FIG. 4, and FIG. 6 is a side view of FIG. 4. 8a, 9a...Guidance surface, 8b, 9b...
・End face, 8... Upper protrusion, 9... Lower protrusion, 5... Supporting metal fitting, 10... Substrate, 1
... Cylindrical body, 11 ... Notch, 12 ...
...Cut up, 6...Light bulb, 13...
...supporting legs.

Claims (1)

[Scope of utility model registration request] A plurality of upper protrusions and lower protrusions each having a circumferential surface as a guide surface and an end face as a supporting plane are arranged at regular intervals in the circumferential direction on the inner wall, and the upper protrusions and the lower protrusions are arranged so that their respective end surfaces face each other. A cylindrical body is spaced apart in the axial direction so as to receive the base plate of the support fitting and is shifted in the circumferential direction, and a notch for guiding the protrusion is carved on the outer periphery of the annular base plate that slides on the periphery of the cylindrical body. A mounting structure for a light bulb socket I is provided with a rotation-preventing locking cut-out on the upper surface of the periphery of the board, and a support fitting with standing legs on which the light bulb is attached from opposing points on the inner periphery of the board.