JP2003036724A - Mounting device for luminaire attached directly to ceiling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an attachment for ceiling directly attachable lighting apparatus that can prevent a suspending plug from disengaging by virtue of weight of the lighting apparatus and has not possibility of a drop of the lighting apparatus even when engagement between an adapter and a ceiling rosette is disengaged. SOLUTION: This device is equipped with a ceiling rosette 1 fixed on a ceiling, an adapter 3 fixed to the lighting apparatus and a suspending plug 4 that is detachably locked on the under surface of the ceiling rosette 1. An opening 8 is formed in the adapter 3, a plurality of locking pawls is infestably set on the inner peripheral surface of the opening 8, and a locking part 5 that can be locked on the under surface of the locking pawl 9 is formed on a ceiling rosette 1. On the outer periphery of the suspending plug 4, a receiving surface that is engaged with the adapter 3 and prevents it from drop is formed with spacing 21 from the adapter 3 in a normal state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling luminaire mounting apparatus.

[0002]

2. Description of the Related Art Conventionally, a ceiling rosette having a blade insertion opening on the lower surface and fixed to the ceiling surface, an adapter body attached to a lighting fixture body, and a blade attachment opening of the ceiling rosette are detachably attached. Japanese Patent Laid-Open Publication No. Hei 12-30523 discloses a ceiling-mounted lighting fixture mounting device comprising a hook plug main body having a stopper blade to be stopped, and a hole for inserting the hook plug main body formed in the lighting fixture main body. There is.

In the above-described apparatus for directly mounting the lighting fixture on the ceiling, a locking claw that can be retracted from the outer periphery of the hook plug body is provided, and this claw is locked to the inner peripheral surface of the lighting fixture body to support the lighting fixture body. is doing. However, in such a structure, since the weight of the lighting fixture main body is added to the hook plug main body, there is a concern that the plug blade may come off and the hook plug main body and the lighting fixture main body may drop.

[0004]

SUMMARY OF THE INVENTION In the present invention, since the weight of the luminaire main body is not supported by the ceiling rosette and is not added to the hook plug body in the normal state, it is possible to prevent the hook plug body from coming off, and by any chance. An object of the present invention is to provide a ceiling-mounted lighting fixture mounting device in which the lighting fixture does not fall even if the engagement between the adapter body and the ceiling rosette is released.

[0005]

A ceiling-mounted lighting fixture mounting device of the present invention is a ceiling rosette fixed to the ceiling, an adapter body attached to the lighting fixture body, and a detachable lock on the lower surface of the ceiling rosette. And a hook plug main body. A hole for inserting the sealing rosette is formed in the adapter body, and a plurality of locking claws are urged inwardly on the inner peripheral surface of the hole so as to be retractable and retractable, and the sealing rosette is locked with the lower surface of the locking claw. A possible locking portion is formed, and a pressing surface that engages with the locking portion of the sealing rosette and moves the locking claw against its urging is provided on the inner upper surface of the locking claw, A receiving surface that engages with the adapter body and prevents the adapter body from falling is formed on the outer periphery of the hook plug body in a normal state with a gap from the adapter body.

The weight of the main body of the lighting fixture is normally retained by the engaging claw provided on the adapter body with the sealing rosette and the gap between the adapter body and the receiving surface of the hooking plug body. Eliminates joining the body. Even if the locking claw and the sealing rosette are disengaged due to contraction or vibration of the sealing rosette, the receiving surface of the adapter body and the hook plug body are engaged to prevent the adapter body and the lighting fixture body from falling. .

The projecting piece can be formed on the inner peripheral surface of the hole of the adapter body, and the receiving surface can be formed on the outer circumference of the hooking plug so as to be engageable with the projecting piece. Also, on the adapter body,
A first tapered surface is formed so as to have a larger diameter as it goes downward, and a receiving surface is engageable with the first tapered surface and a second tapered surface has a larger diameter as it goes downward. It is also possible to make it a taper surface. The locking claw is formed with a protrusion that can be engaged with the upper surface of the engaging portion formed on the outer periphery of the sealing rosette, and the inner side surface immediately below the protrusion is the contact surface, and the locking claw is The contact surface may be urged to contact the outer peripheral surface of the sealing rosette. As a result, the protruding portion engages with the sealing rosette over the entire width, and disengagement due to contraction of the sealing rosette is prevented.

[0008]

1 to 8 show a first embodiment of the present invention. As shown in FIGS. 1 and 3, the ceiling-mounted lighting fixture mounting device is detachably attached to a ceiling rosette 1 fixed to the ceiling, an adapter body 3 attached to the lighting fixture body 2, and a lower surface of the ceiling rosette 1. And a hooking plug body 4 to be locked.

As shown in FIGS. 3 and 5, the sealing rosette 1 has a cylindrical shape, and a planar circular flange 5 is projected along the lower end of the outer periphery thereof. The flange 5 is a locking portion that engages with the adapter body 3, and the outer peripheral portion of the lower end surface of the flange 5 is a guide surface 6 that is inclined so that the diameter becomes smaller as it goes downward. Further, a pair of arcuate blade insertion holes 7 are formed on the lower surface of the sealing rosette 1.
The blade insertion opening 7 has a wide portion formed on one end side and a narrow portion formed on the other end side, and a terminal (not shown) connected to indoor wiring is arranged in the inner portion of the narrow portion. It is set up.

As shown in FIGS. 3 and 6, the adapter main body 3 is attached to the lower surface of the central portion of the top plate of the luminaire 2, and the hole 8 for fitting the sealing rosette 1 and the hook plug main body 4 into the central portion thereof. Has been drilled. The hole 8 is circular in plan view, and the diameter of the upper portion thereof is formed to be slightly larger than the outer diameter of the flange 5 of the sealing rosette 1. In addition, two locking claws 9 are arranged on opposite sides of the upper part of the inner peripheral surface of the hole 8 so as to face each other and to be retractable.

These locking claws 9 are urged by a spring 10 built in the adapter body 3 so as to project from the inner peripheral surface of the hole 8 toward the center. A protrusion 11 is formed on the upper end of the tip of the locking claw 9 so that the lower surface thereof can engage with the upper surface of the flange 5 (locking portion) formed on the outer periphery of the sealing rosette 1. The side surface is a contact surface 12 that contacts the outer peripheral surface of the flange 5. The length of the portion of the protruding portion 11 protruding from the contact surface 12 is formed to have the same dimension as the overhanging width of the upper surface of the flange 5, and the engaging claw 9 has the contact surface 12 inside the hole 8. It is pressed by the spring 10 so that it can project inward from the peripheral surface. The upper surface of the protruding portion 11 is a pressing surface 13 that is inclined upward and outward. The operating levers 14 are integrally provided on the lower surface of the locking claw 9, and these operating levers 14 are exposed in the recesses 15 formed on the lower surface of the adapter body 3 to move the operating lever 14 toward the outer periphery. Then, the locking claw 9 is adapted to be immersed in the adapter body 3.

A projecting piece 16 is formed on the inner peripheral surface of the hole 8 below the locking claw 9 over the entire length in the circumferential direction. The overhanging piece 16 is arranged so as to be located below the flange 5 when the adapter body 3 is attached to the sealing rosette 1 (FIG. 8). Further, the lower surface of the overhanging piece 16 is a locking surface which is a constituent element of a safety mechanism when the locking claw 9 and the flange 5 are disengaged.

As shown in FIGS. 3 and 7, the hook plug body 4 has a long side slightly shorter than the inner diameter of the overhanging piece 16 and a short side formed in an elongated shape having an arc shape. A connecting cord 22 connected to the connector extends. On the upper surface of the hook plug body 4, a pair of plug blades 18 which are removably inserted into the plug blade insertion openings 7 of the sealing rosette 1 are projected, and the plug blades 18 and the connection cords 22 are electrically connected. There is. A lock claw 19 is provided on the upper surface of the hook plug body 4 so as to be retractable and urged in the protruding direction. The lock claw 19 is a hook plug body 4
When it is in the proper position with respect to the sealing rosette 1, it projects and engages with the locking recess of the sealing rosette 1 to regulate the rotation of the hooking plug body 4. By operating the lock release button 20, the lock claw 19 is retracted, and the hook plug body 4 is moved to the blade 1.
8 can be rotated in the pull-out direction.

A shoulder portion 17 is projected on the outer peripheral surface of the hook plug body 4 on the short side. The outer diameter of the shoulder 17 is the protruding piece 16
And the upper surface of the shoulder 17 is a receiving surface which is a constituent element of the safety mechanism when the engagement claw 9 and the flange 5 are disengaged. Also, the ceiling rosette 1
Shoulder portion 17 of the hook body 4 is larger than the outer diameter of the flange 5 of
The outer diameter of is smaller. Then, as shown in FIG. 2, the adapter body 3 is attached to the sealing rosette 1, and the hook plug body 4 is attached to the lower surface of the sealing rosette 1.
Is attached, the shoulder portion 17 is located below the overhanging piece 16 of the adapter body 3, and between the lower surface of the overhanging piece 16 which is the locking surface and the upper surface of the shoulder portion which is the receiving surface, the width of the shoulder 17 is normally A gap 21 is formed.

This ceiling-mounted luminaire mounting device is mounted as follows. When the ceiling rosette 1 fixed to the ceiling is applied to the hole 8 and the lighting fixture body 2 is pushed up, the ceiling rosette 1 is inserted into the hole 8 of the adapter body 3, and the pressing surface 13 of the locking claw 9 is the flange of the ceiling rosette 1. Hit the guide surface 6 of 5.
When the adapter main body 3 further rises, the locking claws 9 are pushed in the outer peripheral direction and are retracted inside the adapter main body 3.

When the locking claw 9 passes through the flange 5, the spring 10 pushes the locking claw 9 so that the lower surface of the protruding portion 11 of the locking claw 9 becomes the upper surface of the flange 5, as shown in FIG. While engaging, the contact surface 12 below the protrusion 11 contacts the outer peripheral surface of the flange 5, and the adapter body 3 and the lighting fixture body 2 are supported by the ceiling rosette 1. Since the abutment surface 12 of the locking claw 9 is biased so as to project inward from the inner peripheral surface of the hole 8, the sealing rosette 1 contracts due to temperature change, and the outer peripheral surface of the flange 5 slightly retracts. However, since the locking claw 9 is pushed further inward so as to follow the locking claw 9, the engagement between the locking claw 9 and the flange 5 is not easily disengaged.

Next, the hook plug body 4 is inserted into the hole 8 of the adapter body 3, and the blade 18 is inserted into the sealing rosette 1.
Insert it into the wide portion of the blade insertion slot 7 and rotate it toward the narrow portion. When the hook plug body 4 rotates to the proper position, the lock claw 19 projects and engages with the sealing rosette 1, the hook plug body 4 is positioned at that position, and the blade 18 is connected to the indoor wiring. Further, in the normal state in which the sealing rosette 1, the adapter body 3 and the hook plug body 4 are assembled in this way, a gap 21 is opened between the overhanging piece 16 of the adapter body 3 and the shoulder portion 17 of the hook plug body 4. Therefore, the weights of the adapter main body 3 and the lighting fixture main body 2 are not added to the hook plug main body 4.

Even if the locking claw 9 of the adapter body 3 comes off the flange 5 of the sealing rosette 1 when the shrinkage rate of the sealing rosette 1 is large or there is a strong vibration, the overhanging piece 16 of the adapter body 3 is removed. Since the outer diameter of the shoulder portion of the hook plug body 4 located below the inner diameter is larger than the inner diameter, the overhanging piece 16 is received by the shoulder portion 17 and the adapter body and the lighting fixture body 2 do not fall.

9 to 13 show another embodiment of the present invention. As shown in FIGS. 9 and 12, the adapter body 3
On the inner peripheral surface of the hole 8, a first tapered surface 23 serving as a locking surface is formed below the locking claw 9 over the entire length in the circumferential direction. The 1st taper surface 23 inclines so that it may become large diameter as it goes down. As shown in FIGS. 9 and 13, the upper portion of the outer peripheral surface of the hook plug body 4 on the short side is a second tapered surface 24 which is a receiving surface. The second tapered surface 24 has a first diameter that becomes larger as it goes downward.
Is inclined at the same angle as the tapered surface 23, the outer diameter of the widest part of the second tapered surface 24 is formed larger than the inner diameter of the narrowest part of the first tapered surface 23.

As shown in FIGS. 10 and 11, the adapter body 3 is provided on the upper surface of the flange 5 of the sealing rosette 1.
When the portion of the locking claw 9'projected from the hole 8 is engaged and the hook plug body 4 is attached to the lower surface of the sealing rosette, the width a from the first tapered surface 23 of the adapter body 3 is
The second tapered surface 24 of the hook plug main body 4 is arranged below the gap 21 of the above. Therefore, in the normal state, the weight of the adapter main body 3 and the lighting fixture main body 2 is not added to the hooking plug main body 4, but in the unlikely event that the locking claw 9 comes off the flange 5, the first tapered surface 23 is The adapter body 3 and the luminaire body 2 are prevented from falling by being received by the second tapered surface 24. The locking claw 9 ′ shown in FIGS. 10 and 12 does not have the protrusion 11 and the contact surface 12 at the tip, but the same locking claw 9 as in the first embodiment is used. You can also Since other configurations are almost the same as those of the first embodiment, the same parts are designated by the same reference numerals and detailed description thereof will be omitted.

[0021]

According to the inventions of claims 1 to 3, in the normal state in which the locking claws of the adapter body are engaged with the sealing rosette, the weight of the adapter body and the luminaire body is added to the hook plug body. Since it is not present, it is possible to prevent the hook plug main body from falling off from the sealing rosette. Also, even if the locking claw and the sealing rosette are disengaged due to contraction or vibration of the sealing rosette, the adapter body will be caught by the receiving surface of the hook plug body. Absent. Further, it is possible to reliably receive the adapter body regardless of the orientation of the hook plug body. According to the invention of claim 4, the portion of the protrusion protruding from the contact surface engages with the sealing rosette over the entire width, and the locking claw is disengaged even if the sealing rosette contracts to some extent. Can be prevented.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a ceiling-mounted direct lighting fixture mounting device showing a first embodiment.

FIG. 2 is an enlarged view of part A of FIG.

FIG. 3 is an exploded perspective view of the ceiling-mounted direct lighting fixture mounting device according to the first embodiment.

FIG. 4 is a bottom view of the ceiling-mounted lighting fixture mounting device according to the first embodiment.

FIG. 5 is a side view of the sealing rosette according to the first embodiment.

FIG. 6 is a cross-sectional view of the adapter body according to the first embodiment.

FIG. 7 is a perspective view of a hook plug body according to the first embodiment.

FIG. 8 is a sectional view of the sealing rosette and the adapter body according to the first embodiment.

FIG. 9 is an exploded perspective view of a ceiling-mounted lighting fixture mounting device according to a second embodiment.

FIG. 10 is a cross-sectional view of a ceiling-mounted lighting fixture mounting device showing a second embodiment.

FIG. 11 is a bottom view of the ceiling-mounted lighting fixture mounting device according to the second embodiment.

FIG. 12 is a cross-sectional view of the adapter body according to the second embodiment.

FIG. 13 is a perspective view of a hook plug body according to a second embodiment.

[Explanation of symbols]

1 ceiling rosette 2 Lighting fixture body 3 Adapter body 4 Hook plug body 5 Flange (locking part) 6 Guide surface 7 Plug blade insertion port 8 holes 9,9 'locking claw 10 springs 11 Projection 12 Contact surface 13 Pressing surface 14 Operation lever 15 recess 16 Overhanging piece 17 Shoulder 18 blade 19 lock claws 20 Lock release button 21 Gap 22 Connection code 23 First tapered surface 24 Second taper surface

Claims (4)

[Claims] 1. A ceiling rosette fixed to a ceiling, an adapter body attached to a lighting fixture body, and a hook plug body detachably locked to a lower surface of the ceiling rosette, the adapter body including the ceiling. A hole into which a rosette is fitted is formed, and a plurality of locking claws are urged inwardly on the inner peripheral surface of the hole so that the locking claw can be retracted and retracted, and the sealing rosette can be locked with the lower surface of the locking claw. A stopper is formed, and a pressing surface is provided on an inner upper surface of the locking claw for engaging the locking part of the sealing rosette to move the locking claw against the bias thereof. A ceiling-mounted lighting fixture mounting device characterized in that a receiving surface for engaging with the adapter body to prevent the adapter body from falling is formed on the outer periphery of the body with a gap from the adapter body in a normal state. 2. The ceiling-mounted lighting fixture mounting device according to claim 1, wherein an overhanging piece is formed on an inner peripheral surface of the hole of the adapter body, and the receiving surface is formed so as to be engageable with the overhanging piece. . 3. A first taper surface that is inclined so as to have a larger diameter as it goes downward is formed in a hole of the adapter body, and the receiving surface is engageable with the first taper surface. 2. The ceiling-mounted lighting fixture installation device according to claim 1, wherein the second taper surface is a second taper surface inclined so as to have a larger diameter as it goes downward. 4. The engaging claw is formed with a protrusion that can be engaged with an upper surface of an engaging portion formed on the outer periphery of the sealing rosette, and an inner side surface immediately below the protrusion is used as a contact surface. The ceiling-mounted direct lighting fixture mounting device according to any one of claims 1 to 3, wherein the locking claw is biased so that its contact surface contacts the outer peripheral surface of the ceiling rosette.