JP3784565B2 - Lighting fixture mounting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lighting fixture mounting apparatus to a wiring fixture such as a hook ceiling body.
[0002]
[Prior art]
The lighting fixture mounting apparatus of the conventional example (for example, JP-A-7-37412, 7-37413, JP-A-5-57718, registration No. 2577174, etc.) is provided on the ceiling surface 100 as shown in FIG. The instrument body is attached to the catching sealing body 101 by engaging the latching piece 104 provided on the instrument holder 103 of the instrument body with the locking stage 102 of the installed hooking sealing body 101.
[0003]
The locking piece 104 is housed in the instrument holder 103 so that the locking claw 105 can be moved back and forth with respect to the locking stage 102, and the spring 106 biases the locking claw 105 in the advance direction. Yes. At this time, the locking piece 104 is slidably supported on the inner peripheral surface of the opening 107 of the tool holder 103, and the weight of the tool is a surface contact between the flat surface 108 on the ceiling side of the opening 107 and the flat surface on the upper surface of the locking piece 104. Is supported by.
[0004]
[Problems to be solved by the invention]
The distance H ₁ from the locking surface of the locking step 102 of the locking claw 104 provided on the tool holder 103 to the ceiling side end surface of the tool holder is equal to or less than the distance H ₂ from the locking surface to the ceiling surface. If the opposite is true, the holder end face hits the ceiling before the locking step 102 and the locking claw 104 are locked, and cannot be attached. That is, this distance H ₁ is the sum of the thickness H _{3 of the} locking claw 104 and the thickness H ₄ of the holder surface. The locking claw 104 needs a taper 105a so that the locking piece 104 can easily slide when inserted into the hooking sealing body from the point of locking property to the locking step 102, and needs a certain thickness. is there. Large insertion force and the taper 105a is small luminaire that Do required. On the other hand, if the locking piece 104 is thick, the thickness of the holder surface that supports the locking claw 104 is not sufficient and the strength is insufficient, so that a heavy instrument cannot be attached, cannot withstand the instrument weight, and is destroyed. The instrument falls. Further, since the load is received on a wide plane, a large moment is applied to the end portion 108a, and the end portion 108a is easily broken. Further, since the entire upper surface of the locking piece 104 is in contact with the flat surface 108 of the instrument holder 103, the frictional resistance is increased, and the unlocking operability of the locking piece 104 is deteriorated.
[0005]
Accordingly, an object of the present invention is to provide a lighting fixture mounting apparatus capable of mounting a heavy fixture while maintaining the insertability of the fixture to a hooked sealing body.
[0006]
[Means for Solving the Problems]
The lighting fixture mounting apparatus according to claim 1 has an insertion hole through which a wiring fixture having a locking step installed on a ceiling surface is inserted, has a recess on an inner peripheral surface of the insertion hole, and advances and retreats in the recess. An instrument holder having a locking piece that is freely stored and locked to the locking stage by advancement,
The locking piece is thicker than the both side parts of the locking piece, so that the upper surface of both side parts thereof is lower than the central part, the thickness of the central part of the locking piece,
The upper surface in the recess protrudes lower on both sides than the center, and the thickness of the both sides between the upper surface of the instrument holder and the upper surface in the recess is larger than the center.
Only the both side portions of the locking piece are supported by the both side portions of the upper surface in the recess.
[0007]
According to the lighting fixture mounting apparatus according to claim 1, since the fixture holder is supported by both side portions of the locking piece, the mounting strength can be improved without increasing the thickness of the fixture holder as a whole, and the weight is large. A lighting fixture can be attached. Further, since the contact area between the locking piece and the instrument holder can be reduced, friction is reduced and unlocking operability is improved.
Further, since the thickness of the central portion of the locking piece can be increased, the taper for locking to the locking step can be increased, and the insertability of the instrument into the hooking sealing body having the locking step is improved.
[0010]
The lighting fixture mounting apparatus according to claim 2 is the lighting device mounting apparatus according to claim 1 , wherein the central portion of the upper surface and the both side portions of the locking piece are continuous via a step, and the locking piece is fixed on the upper surface in the recess. it is obtained and the central portion facing the central portion of the locking piece and the both side portions for supporting the both side portions of the strip continuously through the stage.
[0011]
According to the lighting fixture mounting apparatus of the second aspect, the same effect as the first aspect is obtained.
[0012]
According to a third aspect of the present invention, in the lighting fixture mounting apparatus according to the first aspect , the locking piece has the central portion on the upper surface thereof and the both side portions continuous with an inclined surface, and the locking piece on the upper surface in the concave portion. the two side portions and the side portions for supporting the the said central portion facing the central portion of the locking piece sequentially with the inclined surface of said inclined surface of the inclined surface of the engaging piece in the recess It is in contact .
[0013]
According to the lighting fixture mounting apparatus of the third aspect , in addition to the same effect as the first aspect , the stress concentration on the corner portion can be reduced, and the breakage can be prevented.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of the present invention will be described with reference to FIGS. That is, in this lighting fixture mounting apparatus, first, as shown in FIG. 5, the locking piece 5 provided on the fixture holder 4 is attached to the locking step 3 of the wiring fixture installed on the ceiling surface 1, for example, the hooking ceiling body 2. The instrument body 6 is attached to the hooking sealing body 2 by being locked. The instrument holder 4 is provided in the central opening of the instrument body 6. In FIG. 5, 7 is a plug that is connected to the lighting device of the instrument body 6 and passes through the instrument holder 4 and hooks into the hook hole 2a of the hook sealing body 2, 8 is a body cover provided on the lower surface of the instrument body 6, and 9 is the instrument. Two annular fluorescent lamps 10 supported by a lamp support spring (not shown) provided on the main body 6 and connected to a lamp socket (not shown) 10 cover the fluorescent lamp 9 and cover the lower surface of the appliance main body 6. It is a glove attached to.
[0017]
The instrument holder 4 is configured to be supported on both sides of the locking piece 5 in a state where the locking piece 5 is locked to the locking step 3. That is, the instrument holder 4 is attached to the center of the instrument body 6 by a fixture (not shown), and an insertion hole 11 serving as a fitting portion that penetrates the hooking sealing body 2 is formed at the center as shown in FIG. Yes. A recess 12 is formed on both sides of the insertion hole 11 so as to open on the lower surface of the instrument holder 4 and the inner peripheral surface of the insertion hole 11. The pair of recesses 12 extend in the radial direction of the insertion hole 11 on both sides of the bottom surface 23 of the recess 12 as viewed from the lower surface. The protrusion 13 is stepped, and the cover 14 is attached to the opening on the lower surface side of the recess 12 to leave an opening for projecting only the locking claw 18 at the distal end of the locking piece 5 in the radial direction of the insertion hole. As a result, the thickness of the holder surface supported by the locking piece 5, that is, the thickness L ₁ (see FIG. 1) of the portion of the protrusion 13 of the instrument holder 4 is centered between the protrusions 13 by the amount of the protrusion 13. while larger than the thickness L ₂ of the portions are discontinuously changing stepwise the protrusions 13 corresponding to both side portions of the locking piece 5 and the central side. The cover 14 has an operation knob opening 15 for the locking piece 5 formed on the lower surface side.
[0018]
The locking piece 5 has a substantially inverted L shape consisting of a horizontal piece 16 and a vertical piece 17, and the horizontal piece 16 is formed such that both side portions 16a of the upper surface are thinner than the central portion as shown in FIG. As shown in FIG. 4, it is formed in the circular arc surface of the same curvature as the circumferential surface of the insertion hole 11, and the latching claw 18 is formed by forming a taper surface above it. Thereby, the thickness of the locking piece 5 is made thicker at the center side than both ends of the locking piece 5. The vertical piece 17 serves as an attachment release lever portion, and the surface facing the locking claw 18 is formed into a concave curved surface as the distance from the horizontal piece 16 increases, and the surface has a non-slip unevenness 19 on which the operation finger hits. Forming. A protrusion 21 parallel to the spring receiver 20 and the horizontal piece 16 is provided on the opposite side of the vertical piece 17 to the locking claw 18. The vertical piece 17 of the locking piece 5 is passed through the opening 15 of the cover 14, the lower surface of the horizontal piece 16 on the locking claw 18 side and the lower surface of the protruding portion 21 are brought into contact with the cover 14, and the cover 14 is opened to the opening of the holder 4. Is attached to the cover 14 so as to be slidable between the cover 14 and the bottom surface 23 of the recess 12. At this time, both side portions 16a of the horizontal piece 16 are brought into contact with the protruding portion 13, and a gap 26 is formed between the central portion of the horizontal piece 16 and the portion between the protruding portion 13 of the bottom surface 23 (see FIG. 1). Is formed so that no load is applied at the center of the locking piece 5. Further, when the cover 14 is attached to the opening of the recess 12, a spring 24 using, for example, a coil spring is compressed between the spring receiving portion 20 of the locking piece 5 and the bottom portion of the recess 12 viewed from the insertion hole 11 side. The locking claw 18 of the stop piece 5 is urged and projected into the insertion hole 11.
[0019]
When the instrument body 6 to which the instrument holder 4 is attached is pushed into the hooking sealing body 2 as shown in FIG. 5, the tapered surface of the locking claw 18 protruding from the instrument holder 4 into the insertion hole 11 hits the locking step 3. The taper surface of the locking claw 18 slides on the locking step 3 in accordance with the push-up force of the instrument body 6 and retracts against the spring 24, and when the locking claw 18 is positioned above the locking step 3, the spring 24. Due to this restoring force, the locking claw 18 protrudes, and the lower surface of the locking claw 18 is locked to the upper surface of the locking step 3. When the lifting force of the instrument body 6 is released, the instrument holder 4 is lowered together with the instrument body 6 by its own weight, and the protrusions 13 are brought into contact with and supported on both sides of the locking piece 5. When removing the lighting fixture from the hooking sealing body 2, when the vertical piece 17 is pulled against the spring 24, the locking claw 18 is released from the locking step 3, so that the lighting fixture can be removed.
[0020]
According to this embodiment, the attachment strength can be improved without increasing the thickness of the fixture holder 4 of the luminaire, and a luminaire with a large weight can be attached. Further, since the contact area between the locking piece 5 and the instrument holder 4 is reduced, the friction is reduced and the unlocking operability is improved. Specifically, a step is provided on the surface of the instrument holder 4 that receives the load from the locking piece 5 by the ridge 13, and a corresponding step is also provided on both side portions 16 a of the locking piece 5. A load can be received by the protrusion 13 having a large plate thickness of the holder 4. For this reason, it is possible to attach a lighting fixture having a large fixture weight. Moreover, since the plate | board thickness of the center part of the latching piece 5 is large, since the taper surface required for the retraction operation | movement of the latching piece 5 can be taken large, attachment insertion property is not impaired.
[0021]
A second embodiment of the present invention will be described with reference to FIGS. In this lighting fixture mounting apparatus, in the first embodiment, the thickness of the holder surface that supports the locking piece 5 of the fixture holder 4 is changed continuously between the side portions 16a and the central side of the locking piece 5. Others are the same as in the first embodiment.
[0022]
Specifically, the protrusion 13 is formed not on a vertical surface but on an inclined surface 13a that is lowered toward a portion between the protrusions 13, and the locking piece 5 is brought into contact with the inclined surface by surface contact. The surfaces of both side portions 16a are formed as inclined surfaces. As described above, since the central side is continuously changed from both side portions, the stress concentration on the corner portions 28a and 28b applied to the instrument holder 4 can be made smaller than the step as in the first embodiment, so that the strength is increased. Is advantageous.
[0023]
Although the above-described wiring device is the hooking sealing body 2, for example, an adapter electrically and mechanically connected to the hooking sealing body may be used, and the locking claw of the device holder is locked to the locking step. The lighting fixture may be indirectly attached to the hooking sealing body.
[0024]
Further, although the locking step is formed by a collar, the shape may be other, for example, a convex portion, a circumferential groove, or the like.
[0025]
【The invention's effect】
According to the lighting fixture mounting apparatus according to claim 1, since the fixture holder is supported by both side portions of the locking piece, the mounting strength can be improved without increasing the thickness of the fixture holder as a whole, and the weight is large. A lighting fixture can be attached. Further, since the contact area between the locking piece and the instrument holder can be reduced, the friction is reduced and the unlocking operability is improved.
Further, since the thickness of the central portion of the locking piece can be increased, the taper for locking to the locking step can be increased, and the insertability of the instrument into the hooking sealing body having the locking step is improved.
[0027]
According to the lighting fixture mounting apparatus of the second aspect, the same effect as the first aspect is obtained.
[0028]
According to the lighting fixture mounting apparatus of the third aspect , in addition to the same effect as the first aspect , the stress concentration on the corner portion can be reduced, and the breakage can be prevented.
[Brief description of the drawings]
FIG. 1 is a central sectional view of an instrument holder according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along the line AA ′.
3A is a front view, FIG. 3B is a side view, and FIG. 3C is a perspective view.
FIG. 4 is an exploded perspective view of the instrument holder.
FIG. 5 is an exploded perspective view of a lighting fixture.
6A is a central cross-sectional view of the instrument holder of the second embodiment, and FIG. 6B is a cross-sectional view taken along the line BB ′ of FIG.
7A and 7B show the locking pieces, where FIG. 7A is a front view, FIG. 7B is a side view, and FIG. 7C is a perspective view.
8A is a cross-sectional view of a conventional instrument holder locked to a hooking sealing body, and FIG. 8B is a cross-sectional view of the instrument holder.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Ceiling surface 2 Hook ceiling body 3 Locking step 4 Tool holder 5 Locking piece 6 Tool body 11 Insertion hole 12 Recess 13 Projection part 14 Cover 16 Horizontal piece 16a Both sides 17 Vertical piece 18 Locking claw 24 Spring 26 Crevice

Claims (3)

An insertion hole inserted into a wiring device having a locking step installed on the ceiling surface; a recess on an inner peripheral surface of the insertion hole; An instrument holder having a locking piece for locking to
The locking piece is thicker than the both side portions of the locking piece so that the upper surface of both side portions thereof is lower than the central portion, the thickness of the central portion of the locking piece,
The upper surface in the recess protrudes lower on both sides than the center, and the thickness of the both sides between the upper surface of the instrument holder and the upper surface in the recess is larger than the center.
The lighting fixture mounting apparatus in which only the both side portions of the locking piece are supported by the both side portions of the upper surface in the recess. The locking piece has a central portion on the upper surface and the side portions continuous through a step, and on the upper surface in the recess, the both side portions and the locking piece that support the both side portions of the locking piece. The lighting fixture mounting apparatus according to claim 1, wherein the central portion facing the central portion is continuous via a step. The locking piece is said both side portions and the central portion of its upper surface is contiguous with the inclined surface, the upper surface of the recess, the locking piece and the both side portions for supporting the both sides of the locking piece The lighting fixture mounting apparatus according to claim 1, wherein the central portion facing the central portion is continuous with an inclined surface, and the inclined surface of the locking piece is in contact with the inclined surface in the recess .

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