JPH0521776Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a cover mounting device that is applied to a cover for protecting a live part of a printed circuit board of a lighting device such as a sink lamp.

[Conventional technology]

For example, when installing a sink light with an inverter lighting system using an electronic circuit, the cover of the fixture is removed and the fixture body is fixed with wood screws or the like. At this time, since the cover of the printed circuit board of the appliance body protrudes from the appliance body, the work of supporting or grasping this cover is performed to tighten the wooden screws to the appliance body.

[The problem that the idea aims to solve]

However, when the cover is supported or held while tightening wood screws to the instrument body, stress is applied to the cover, which can cause the cover to break or come off.

Therefore, an object of this invention is to provide a cover mounting device that can improve strength without complicating assembly.

[Means to solve the problem]

The cover mounting device of this invention is box-shaped and has a convex portion formed at one end of the opening side edge of a pair of opposing side walls, which protrudes in an L-shape from the other end of the opening side edge. an inclined edge forming a claw with a tip facing opposite to the protrusion, and an extension line from the claw on the opening side edge to the end opposite to the protrusion is outward from the protrusion; and a cover having a mounting tongue with a mounting hole near the protrusion, and a claw fitting hole in which the claw is fitted by bringing the inclined edge of the cover into contact with the surface. and a protrusion fitting hole that fits into the protrusion in a state where the pawl is fitted into the pawl fitting hole and brings the opening side edge of the cover into contact with the surface, The device includes an instrument body having an alignment hole that matches the attachment hole, and a fixture that is screwed into the alignment hole through the attachment hole to fix the attachment tongue to the instrument body.

[Effect]

According to the configuration of this device, the claw is engaged with the claw fitting hole while the inclined edge is in contact with the surface of the instrument body, and the protrusion is fitted into the protrusion fitting hole, so that the fitting of the protrusion is prevented. The assembly work is easy because it can be done smoothly and can be fixed with a single fixture through the mounting hole. In addition, since the protrusions and claws formed on the pair of side walls are fixed to the instrument body, there is sufficient strength even when the pair of side walls are gripped, and the device does not break or come off easily. Therefore, strength can be improved without complicating assembly.

〔Example〕

An embodiment of this invention will be explained based on FIGS. 1 to 7. That is, this cover attachment device includes a cover 1, an instrument body 2, and a fixture 3.

The cover 1 is box-shaped and has a convex portion 6 formed at one end side of the opening side edge 7 of a pair of opposing side walls 4 and 5, and protruding in an L-shape from the other end side of the opening side edge 7. A claw 8 whose tip faces opposite to the protrusion 6 is formed, and an extension line 9 extending from the claw 8 of the opening side edge 7 to the end opposite to the protrusion 6 is inclined outward from the protrusion 6. Edge 1
0, and furthermore, a mounting tongue piece 12 with a mounting hole 11 is provided near the convex portion 6. 13 is a heat radiation hole,
Reference numeral 14 indicates an input penetration portion, 15 indicates an output penetration portion, and 16 indicates a collar portion formed by cutting and raising the input penetration portion 14 and the output penetration portion 15. This cover 1 covers a printed circuit board 33 of an inverter lighting device 26 in the embodiment.

The instrument body 2 has a claw fitting hole 18 in which the claw 8 is fitted by bringing the inclined edge 10 of the cover 1 into contact with the surface 17.
and has a protrusion fitting hole 19 that fits into the protrusion 6 and brings the opening side edge 7 of the cover 1 into contact with the surface 17 with the pawl 8 fitted in the pawl fitting hole 18. , further includes an alignment hole 20, which is an example of a screw hole that aligns with the attachment hole 11.

As shown in FIGS. 5 to 7, this fixture body 2 is an embodiment of a fixture body of a lighting fixture, particularly a sink lamp. This appliance main body 2 is a band-shaped plate, and has a pair of ceiling mounting holes 21 and a power supply hole 22, and a lamp socket 23 is attached to both ends, and a switch 24, a terminal block 25, and an inverter lighting device 26 are installed between the lamp sockets 23. is installed. In addition, a ceramic cover 27 is placed over the appliance body 2, and a hole 28 passing through the lamp socket 23 and a mounting hole 29 are formed in the ceramic cover 27.
and a switch string passage hole 30.
This ceramic cover 27 is attached removably so that it can be cleaned, so it is fixed by passing a thumbscrew 31 through the mounting hole 29 of the ceramic cover 27 and screwing it into the fitting cylinder part 32 of the instrument body 2. .

The inverter lighting device 26 has an insulating sheet 3 attached to a locking support 34 attached to the appliance body 2.
Electronic components are mounted on a printed circuit board 33 that is mounted via 5, and lead wires are connected to an input section 36 and an output section 37. Input section 36 and output section 3
7 is an embodiment in which a connector is used to improve assembly workability without soldering, and a release lever 38 is provided on the side opposite to the printed circuit board 33 for repair purposes. The cover 1 has an input part 36 passed through the input penetration part 14, an output part 37 passed through the output penetration part 15, and covered with a collar part 16.

The attachment tool 3 is screwed into the alignment hole 20 through the attachment hole 11 to fix the attachment tongue piece 12 to the instrument body 2. The fixture 3 is an example of a screw.

40 is a fluorescent lamp, 41 is a switch string, 42
is a hole for locking support.

According to this embodiment, the claw 8 is inserted into the claw fitting hole 18 while the inclined edge 10 is in contact with the surface 17 of the instrument body 2.
Since the convex part 6 is engaged with the convex part fitting hole 19, the convex part 6 can be fitted smoothly, and it can be fixed with one fixture 3 through the attachment hole 11, making assembly work easy. It is. Furthermore, since the convex portions 6 and claws 8 formed on the pair of side walls 4 and 5 are fixed to the instrument body 2, the device has sufficient strength even when gripped by the pair of side walls 4 and 5, will not be damaged, and will not easily come off. Therefore, strength can be improved without complicating assembly.

Therefore, even if aluminum, which has good heat dissipation but relatively low strength, is used for the cover 1, it is difficult to break.

Further, as shown in FIG. 4, the side wall 4 of the cover 1,
5 are integrally formed by bending from the ceiling 43, and the pair of side walls 4 and 5 are firmly fixed to the appliance main body 2 without joining adjacent side walls 44, so that when installing the appliance main body 2, Even if the cover 1 is held or supported by someone else, there is little trouble.

[Effect of idea]

According to the cover mounting device of this invention, a protrusion and a claw are formed on a box-shaped cover, and these are fitted into the claw fitting part and the protrusion fitting hole of the instrument body, and one mounting tool is used. It is fixed to the main body of the device, and a sloped edge is formed from the claw on the edge of the opening side of the side wall to the end opposite to the convex part, which has the effect of improving strength without complicating assembly. be.

[Brief explanation of the drawing]

FIG. 1 is a half-sectional side view of an embodiment of this invention.
Figure 2 is a partial plan view of the appliance body, Figure 3 is a plan view of the cover, Figure 4 is a partial perspective view of the cover, Figure 5 is a cutaway cross-sectional view of the sink light, and Figure 6 is the sink light. A plan view looking up from below, and FIG. 7 is a sectional view taken along the line of FIG. 6. DESCRIPTION OF SYMBOLS 1... Cover, 2... Instrument body, 3... Fixture, 4, 5... Side wall, 6... Convex part, 7... Opening side edge, 8... Claw, 9... Extension line, 10 ...Slanted edge, 11...Mounting hole, 12...Mounting tongue, 17...
...Surface, 18...Claw fitting hole, 19...Protrusion fitting hole, 20...Alignment hole.

Claims (1)

[Claims for Utility Model Registration] A convex portion is formed at one end of the opening side edge of a pair of side walls that are box-shaped and face each other, and protrudes in an L-shape from the other end of the opening side edge. forms a claw in the opposite direction to the protrusion, and the extension line from the claw on the opening side edge to the end opposite to the protrusion is an inclined edge that is outward from the protrusion. and a cover having a mounting tongue with a mounting hole provided near the convex portion, and a claw fitting hole in which the inclined edge of the cover is brought into contact with a surface and the claw is fitted into the cover. , a protrusion fitting hole that fits into the protrusion in a state in which the pawl is fitted into the pawl fitting hole and brings the opening side edge of the cover into contact with the surface; A cover attachment device comprising: an instrument body having an alignment hole that aligns with the hole; and a fixture that is screwed into the alignment hole through the attachment hole to fix the attachment tongue to the instrument body.