JP2001307537A - Mountig device for mounting lighting fitting directly on celing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safety mounting device for directly mounting a lighting fitting to a ceiling, which is capable of preventing the lighting fitting from falling. SOLUTION: This device comprises a sealing roset 1 fixed to the ceiling, an adapter body 3 mounted to the lighting fitting body and a hanging plug body 4 with circular plan view locked to the under surface of the sealing roset 1. A through hole is bored in the adapter body 3 for inserting the sealing roset 1 and the hanging plug body 4. A connecting hook 16 which is capable of telescopically move and connected to the sealing roset 1 is provided on the surface of the inner periphery of the through hole 14. The outer periphery face of the hanging plug body 4 is made to be a first tapered face 8 inclining downward out, and the inner surface of the through hole of the adapter body 3 forms a second tapered face 15 being capable of being connected to the first tapered face 8, inclining downward out and approximately circular in plan view.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting fixture mounting apparatus which is directly mounted on a ceiling.

[0002]

2. Description of the Related Art Conventionally, a ceiling rosette fixed to a ceiling, an adapter body attached to a lighting fixture body, and a hook plug body having a circular shape in a plan view that is detachably engaged with a lower surface of the ceiling rosette, A fitting hole for inserting the hook plug body into the adapter body is formed, and a locking claw that removably engages with a locking receiving portion of the hook plug body is freely protruded and retracted on an inner peripheral surface of the fitting hole. Are disclosed in Japanese Patent Application Laid-Open Nos. 9-259629 and 9-134610.

[0003] In the above-mentioned conventional mounting device, the lighting fixture main body is supported only by the engagement between the locking claw of the adapter main body and the hook plug main body. If the lamp is in an incomplete state, there is a risk that the lighting fixture body will fall.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a ceiling-mounted lighting fixture mounting device which can prevent accidental dropping of the lighting fixture and is highly safe.

[0005]

According to the present invention, there is provided an apparatus for mounting a lighting fixture directly on a ceiling, comprising: a ceiling closet fixed to a ceiling; an adapter body mounted on the lighting equipment body;
A hook plug body having a circular shape in a plan view, which is detachably engaged with the lower surface of the sealing rosette, and a through hole for inserting the sealing rosette and the hook plug body is formed in the adapter body; An outer peripheral surface of the hook plug main body is provided with a first tapered surface inclined downward and outward, and an inner peripheral surface of a through hole of the adapter main body is provided with a locking claw that can be retracted and engaged with the sealing rosette on the peripheral surface. A second tapered surface which is substantially circular in a plan view and which is inclined downward and outward, which is engageable with the first tapered surface.

[0006] The sealing rosette is inserted into the through hole, the adapter body is fitted to the outer periphery of the ceiling rosette, and the locking claws are engaged with the ceiling rosette to support the adapter body and the lighting fixture body. Next, the hook plug body is attached to the lower surface of the ceiling closet, and both are electrically connected.

In this state, since the first tapered surface of the hook plug body receives the second tapered surface of the adapter body from below, even if the engagement between the locking claw and the sealing rosette is released, the plug is attached to the adapter body. The lighting fixture body that has been removed does not fall.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, a ceiling-mounted lighting fixture mounting apparatus according to the present invention comprises a ceiling closet 1 fixed to a ceiling and an adapter body 3 attached to a lighting fixture main body 2. And a hook plug body 4 having a circular shape in a plan view, which is detachably engaged with the lower surface of the ceiling rosette 1.

The sealing rosette 1 has a cylindrical shape, and a circular flange 5 projects along the outer periphery of the lower end. The outer peripheral portion of the lower end of the flange 5 is a guide surface 6 that is inclined downward and inward. On the lower surface of the sealing rosette 1, a pair of arc-shaped receiving blade insertion openings 7,
7 are formed along the circumferential direction. Receiving blade insertion port 7, 7
Has a wide portion formed on one end side and a narrow portion formed on the other end side, and a terminal connected to an indoor wiring is disposed in a deep portion of the narrow portion.

The hook plug body 4 is formed in the shape of a truncated cone having a larger diameter as it goes downward, the upper surface of which is substantially the same as the lower surface of the sealing rosette 1, and the outer peripheral surface of which is a first taper which is inclined downward and outward. Surface 8.

A bulging portion 22 is formed at the center of the lower surface of the hooking plug main body 4, and a power supply connector 10 for connecting a fixture-side connector 9 extending from the lighting fixture main body 2 to the lower surface of the bulging portion 22. Is provided. The power supply connector 10 may not be provided directly on the lower surface of the bulging portion 22 but may be attached to the tip of a connection cord 23 extending from the lower surface of the bulging portion 22, as shown in FIG.

As shown in FIG. 5, a pair of receiving blades 11, 11 which are removably inserted into receiving blade insertion openings 7, 7 of the sealing rosette 1 are provided on the upper surface of the hooking plug body 4.
And the receiving blades 11 and 11 are connected to the power connector 10.

Further, a lock claw 12 is provided on the upper surface of the hooking plug main body 4 so as to be able to come and go. This lock claw 1
Reference numeral 2 is for projecting when the hooking plug main body 4 is at an appropriate position with respect to the sealing rosette 1 and engaging with a recess of the sealing rosette 1 (not shown) to restrict rotation of the hooking plug main body 4. In addition, the lock claw 12
By operating the lock release button 13 (FIG. 2) provided on the side surface of the bulging portion 22, it is immersed in the hook plug main body 4.

As shown in FIGS. 2, 5 and 6, the adapter main body 3 is attached to the lower surface of the central portion of the top plate of the lighting fixture main body 2, and the ceiling rosette 1 and the hook plug main body 4 are provided at the center thereof. A through hole 14 for insertion is provided.

The through hole 14 is substantially circular in plan view.
The upper part of the inner peripheral surface is slightly larger in diameter than the flange 5 of the sealing rosette 1, and the lower part of the inner peripheral surface of the through hole 14 corresponds to the first tapered surface 8 of the hook plug body 4,
The second tapered surface 15 is inclined downward and outward.

In the upper part of the inner periphery of the through hole 14, a pair of locking claws 16, 16 which can be retracted are provided so as to face each other, and these locking claws 16, 16 are built in the adapter body 3. The springs 17 are biased to project toward the center. In addition, the locking claws 16, 16
Has a flank 21 inclined upward and outward.

The operating levers 18, 18 provided integrally on the lower surfaces of the locking claws 16, 16 are exposed in concave portions 19, 19 formed on the lower surface of the adapter body 3. In addition,
The operating levers 18 have a length that does not protrude from the lower surface of the adapter main body 3 so that the operating levers 18 and 18 are not erroneously operated by contacting the cord 20 to which the appliance-side connector 9 is attached, the connection cord 23 extending from the hook plug main body 4, and the like.

The ceiling-mounted lighting fixture is mounted as follows. Ceiling rosette 1 fixed to the ceiling
Is applied to the through hole 14 of the adapter body 3 to push up the lighting fixture body 2, the sealing rosette 1 is inserted into the through hole 14, and the flank 21 of the locking claws 16, 16 is brought into contact with the guide surface 6 of the ceiling rosette 1. Hit When the adapter body 3 is further raised, the locking claws 16, 16 are pressed outward due to the shapes of the flank surface 21 and the guide surface 6, and are immersed inside the adapter body 3.

When the locking claws 16, 16 pass through the flange 5 of the sealing rosette 1, the locking claws 16, 16 are urged by the springs 17, 17 to protrude, and their tips engage the upper surface of the flange 5. Thus, the adapter main body 3 and the lighting fixture main body 2 attached thereto are supported.

Then, as shown in FIG. 3, the hook plug body 4 is inserted into the through hole 14 of the adapter body 3 along the arrow, and the receiving blades 11 of the hook plug body 4 are inserted into the sealing rosette 1. When inserted into the wide portions of the ports 7, 7 and rotated toward the narrow portion, the lock claws 12 of the hook plug body 4 engage the sealing rosette 1, and the hook plug body 4 is positioned at that position. Then, the power connector 10 of the hook plug main body 4 is connected to the indoor wiring via the receiving blades 11 and 11.

When the hook plug body 4 is attached to the lower surface of the sealing rosette 1 in this manner, the hook plug body 4
Since the first tapered surface 5 and the second tapered surface 15 of the adapter body 3 are formed in a circular shape having substantially the same diameter, even if the adapter body 3 is attached to the sealing rosette 1 with a certain eccentricity. The position of the adapter main body 3 is corrected so that the centers of the two coincide.

In this state, the first plug main body 4 is positioned below the second tapered surface 15 of the adapter main body 3.
As shown in FIG. 4, even if the locking claw 16 enters the inside of the adapter body 3 and loses engagement with the flange 5 of the sealing rosette 1, the second tapered surface 8 15 is caught on the first tapered surface 8,
The adapter main body 3 and the lighting fixture main body 2 are prevented from falling.

When removing the lighting fixture body 2, the lock release button 13 of the hook plug body 4 is operated to release the engagement between the lock claw 12 and the ceiling closet 1, and then the hook plug body 4 is moved in the reverse direction. When the receiving blade 11, 11 reaches the wide portion of the receiving blade insertion port 7, 7, pull it down,
The hook plug body 4 is removed from the ceiling rosette 1.

Next, the operation lever 1 of the adapter body 3
8 and 18 are pushed toward the outer periphery of the recesses 9 and 19, and
6 and 16 are immersed in the adapter body 3. Then, the engagement between the locking claws 16, 16 and the flange 5 of the ceiling rosette 1 is released, so that the adapter body 3 and the lighting fixture body 2 can be pulled down from the outer periphery of the ceiling rosette 1.

[0025]

According to the apparatus for mounting a ceiling-mounted lighting fixture of the present invention, the engagement between the locking claw and the ceiling rosette may be disengaged due to vibration during an earthquake or the like, or the engagement by the locking claw may be insufficient. Even so, since the second tapered surface of the adapter main body is supported by being hooked on the first tapered surface of the hook plug main body, it is possible to prevent the lighting fixture main body attached to the adapter main body from unexpectedly dropping. Further, it is only necessary to change the shape of the through hole and the shape of the hook plug main body, and a special member is not required, so that an increase in cost can be suppressed.

Further, since the first tapered surface and the second tapered surface are formed in a circular shape in plan view, even if the adapter main body is mounted eccentrically with respect to the sealing rosette, when the hook plug main body is attached, The position of the adapter body is modified to be concentric with the ceiling rosette.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a ceiling-mounted lighting fixture mounting apparatus according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of the above.

FIG. 3 is a cross-sectional view of the same before the hook plug body is attached.

FIG. 4 is a sectional view showing a state in which the locking claw is immersed;

FIG. 5 is a perspective view of the hook plug main body as viewed from above.

FIG. 6 is a bottom view of the adapter body.

FIG. 7 is a sectional view of an adapter body.

FIG. 8 is a perspective view of another hook plug main body viewed from below.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ceiling rosette 2 Lighting fixture main body 3 Adapter main body 4 Hook plug main body 5 Flange 6 Guide surface 7 Receiving blade insertion opening 8 First taper surface 9 Appliance side connector 10 Power supply connector 11 Receiving blade 12 Lock claw 13 Lock release button 14 Penetration Hole 15 second tapered surface 16 locking claw 17 spring 18 operating lever 19 recess 20 cord 21 flank 22 bulging portion 23 connection cord

Claims (1)

[Claims] 1. A ceiling rosette fixed to a ceiling, an adapter body attached to a lighting fixture body, and a hook plug body circularly viewed in a plan view detachably engaged with a lower surface of the ceiling rosette. The adapter body has a through hole through which the sealing rosette and the hook plug body are inserted, and a plurality of protruding and retractable engaging claws for engaging with the sealing rosette are provided on an inner peripheral surface of the through hole. The outer peripheral surface is a first tapered surface inclined downward and outward, and the inner peripheral surface of the through hole of the adapter body is substantially circular in plan view and engageable with the first tapered surface. The second inclined outward
A ceiling-mounted lighting fixture mounting device characterized by forming a tapered surface.