JP6489313B2 - Mounting bracket for embedded luminaire and embedded luminaire - Google Patents

Description

  The present invention relates to a mounting bracket for an embedded luminaire and an embedded luminaire.

  2. Description of the Related Art Conventionally, as an embedded lighting fixture, for example, a ceiling embedded lighting fixture that is embedded in a ceiling like a downlight and emits light downward is known. This type of lighting fixture has a fixture body in which, for example, two or more mounting springs are provided on the outer peripheral surface. A collar portion is provided at an end of the instrument body on the light emission side.

  The ceiling is provided with an embedding hole for attaching the lighting apparatus. The lighting fixture is inserted into the embedding hole in a state where the mounting spring is elastically deformed, and then the mounting spring presses the inner peripheral surface of the embedding hole by its restoring force, and the collar portion is around the embedding hole. It is held by abutting against the ceiling surface.

  At this time, the ceiling may be lost due to the pressing force of the mounting spring. For this reason, for example, Patent Document 1 discloses that a mounting auxiliary plate that receives a pressure contact force by a mounting spring is installed on the back side of the ceiling material.

JP 2009-140650 A

  The conventional mounting auxiliary plate is fixed to the back side of the ceiling material using a double-sided tape. However, since the pressure contact force of the mounting spring of the lighting fixture is strong, there is a problem that when the lighting fixture is attached, the attachment auxiliary plate is detached from the back side of the ceiling material. Therefore, as a result, the lighting apparatus cannot be firmly fixed.

  Therefore, the present invention provides a mounting bracket for an embedded lighting fixture and the mounting bracket capable of firmly fixing the fixture main body of the embedded lighting fixture and suppressing the loss of the attached portion. An object of the present invention is to provide an embedded lighting fixture.

  In order to achieve the above object, a mounting fixture for an embedded luminaire according to one aspect of the present invention is provided with a mounting spring on an outer surface that can be mounted in an embedded hole that penetrates a plate-shaped mounted portion. A mounting bracket for an embedded lighting apparatus having an apparatus body, a plate having a maximum width larger than the diameter of the embedded hole and having a first insertion hole having a diameter equal to or smaller than the diameter of the embedded hole A first plate, an annular second plate having a second insertion hole having a diameter substantially the same as the diameter of the embedding hole, and a connecting member for connecting the first plate and the second plate. The first plate has a shape in which a part of the ring forming the first insertion hole is cut, and the second plate has a step portion provided along the second insertion hole. (A) The first plate is disposed on the first main surface side of the mounted portion, and (b) the stepped portion is The second plate is disposed on the second main surface side opposite to the first main surface of the attached portion so as to be located on the first plate side, and (c) the first insertion hole, When the embedded hole and the second insertion hole are arranged so as to be substantially concentric in a plan view, (i) the stepped portion contacts the embedded hole, and (ii) the first The plate and the second plate sandwich the attached portion by connecting the stepped portion and the first plate by the connecting member.

  Moreover, the embedded lighting fixture which concerns on 1 aspect of this invention is provided with the said attachment metal fitting.

  According to the mounting fixture for an embedded luminaire according to the present invention, the fixture body of the embedded luminaire can be firmly fixed, and the loss of the attached portion can be suppressed.

It is an outline perspective view of an embedding type lighting fixture concerning an embodiment. It is a general | schematic perspective view which shows a mode that the fixture main body of the embedding type lighting fixture which concerns on embodiment is attached to the fixture which is fixed to the ceiling board. It is a disassembled perspective view of the mounting bracket for embedded luminaires according to the embodiment. It is a top view of the attachment metal fitting of the state fixed to the ceiling board in embodiment. It is a bottom view of the attachment metal fitting of the state fixed to the ceiling board in embodiment. It is sectional drawing of the attachment metal fitting in the VI-VI line of FIG. It is sectional drawing of the attachment metal fitting in the VII-VII line of FIG. It is a figure which shows a mode that the attachment metal fitting which concerns on embodiment is fixed to a ceiling board. It is sectional drawing which shows a mode that the fixture main body of the embedding type lighting fixture which concerns on embodiment is attached to the fixture which was fixed to the ceiling board. It is sectional drawing of the attachment metal fitting of the state fixed to the ceiling board in the modification of embodiment.

  Hereinafter, a mounting bracket for an embedded lighting device and an embedded lighting device according to an embodiment of the present invention will be described in detail with reference to the drawings. Note that each of the embodiments described below shows a preferred specific example of the present invention. Therefore, numerical values, shapes, materials, components, arrangement and connection forms of components, steps, order of steps, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims showing the highest concept of the present invention are described as optional constituent elements.

  Each figure is a mimetic diagram and is not necessarily illustrated strictly. Moreover, in each figure, the same code | symbol is attached | subjected about the same structural member.

(Embodiment)
[lighting equipment]
First, the outline | summary of the embedded lighting fixture which concerns on embodiment is demonstrated using FIG.1 and FIG.2. FIG. 1 is a schematic perspective view of an embedded luminaire 100 according to the present embodiment. FIG. 2 is a schematic perspective view showing a state in which the fixture main body 110 of the embedded lighting fixture 100 according to the present embodiment is attached to the mounting bracket 10 fixed to the ceiling plate 90.

  The luminaire 100 is an example of an embedded luminaire such as a downlight, and is embedded in a mounted portion such as the ceiling board 90 to irradiate light downward. As shown in FIG. 1, the lighting fixture 100 includes a mounting bracket 10 and a fixture main body 110. The appliance main body 110 is provided with an attachment spring 112 on the outer surface that can be attached to an embedding hole 93 provided in the ceiling plate 90.

  A light source (not shown) is disposed inside the instrument main body 110. The light source is, for example, an LED (Light Emitting Diode) module. The light source may be an organic EL (Electro Luminescence) element, a semiconductor laser element, or a fluorescent lamp.

  The luminaire 100 further has an annular flange 114. The collar portion 114 is provided on the light emitting surface side of the instrument main body 110. The outer diameter of the flange 114 is larger than the diameter of the embedding hole 93. The appliance main body 110 is attached to the embedding hole 93 by the attachment spring 112 and the flange portion 114 sandwiching the ceiling plate 90.

  In the present embodiment, as shown in FIG. 2, the instrument main body 110 is attached to the embedding hole 93 by being attached to the attachment fitting 10 fixed to the ceiling plate 90. Details of attachment of the instrument body 110 will be described later.

  The ceiling plate 90 is an example of a plate-like attached portion provided with an embedding hole 93 to which the fixture main body 110 of the embedded lighting fixture 100 is attached. As shown in FIG. 2, the ceiling board 90 has an upper surface 91, a lower surface 92, and an embedding hole 93.

  The upper surface 91 is an example of the first main surface of the attached portion, and is the back surface of the ceiling (surface on the back side of the ceiling). The lower surface 92 is an example of the second main surface on the opposite side of the first main surface of the attached portion, and is the surface of the ceiling. The lower surface 92 is a surface on the light emission side of the lighting fixture 100.

  The embedding hole 93 is a hole that penetrates the ceiling plate 90. The instrument main body 110 is inserted into the embedding hole 93 from the lower surface 92 side, and the inserted instrument main body 110 is attached to the peripheral portion of the embedding hole 93. In the present embodiment, the diameter of the embedding hole 93 is substantially the same as the diameter of the hole to which the fixture body 110 of the lighting fixture 100 can be attached. The diameter φ (see FIG. 4) of the embedding hole 93 is, for example, 100 mm to 120 mm.

  The ceiling board 90 is formed of, for example, a gypsum board, but is not limited thereto. The ceiling plate 90 may be formed from wood or a metal plate. The thickness of the ceiling board 90 is, for example, 5 mm to 25 mm.

[Mounting bracket]
Next, a mounting bracket for an embedded lighting fixture according to the present embodiment will be described with reference to FIGS.

  FIG. 3 is an exploded perspective view showing the mounting fixture 10 for the embedded lighting apparatus according to the present embodiment. FIG. 4 is a top view of the mounting bracket 10 in a state of being fixed to the ceiling plate 90 in the present embodiment. FIG. 5 is a bottom view of the mounting bracket 10 in a state of being fixed to the ceiling plate 90 in the present embodiment. 6 is a cross-sectional view of the mounting bracket 10 taken along line VI-VI in FIG. FIG. 7 is a cross-sectional view of the mounting bracket 10 taken along the line VII-VII in FIG.

  As shown in FIG. 3, the mounting bracket 10 includes an annular first plate 20, an annular second plate 30, and screws 40. In the present embodiment, the mounting bracket 10 further includes a packing 50. In the present embodiment, the mounting bracket 10 includes two screws 40, but the number of screws 40 is not particularly limited. The mounting bracket 10 may include only one screw 40, or may include three or more screws 40.

  As shown in FIGS. 2 and 4 to 7, the mounting bracket 10 is fixed to the ceiling plate 90 by the first plate 20 and the second plate 30 connected by screws 40 sandwiching the ceiling plate 90. The Specifically, the first plate 20 is disposed on the upper surface 91 of the ceiling plate 90. The second plate 30 is disposed on the lower surface 92 of the ceiling plate 90. The screw 40 is disposed in the embedding hole 93 and connects the first plate 20 and the second plate 30. Thereby, the first plate 20 and the second plate 30 sandwich the ceiling plate 90.

  The first insertion hole 24 of the first plate 20, the embedding hole 93, and the second insertion hole 35 of the second plate 30 are arranged so as to be substantially concentric in a plan view. 3 to 6 indicate an axis P that passes through the center of a substantially concentric circle formed by the first insertion hole 24, the embedding hole 93, and the second insertion hole 35.

  Below, the detail of each component with which the attachment metal fitting 10 is provided is demonstrated in detail using drawing.

[First plate]
The first plate 20 is an annular plate having a maximum width larger than the diameter of the embedding hole 93 and having the first insertion hole 24. The first plate 20 has a shape in which a part of the ring forming the first insertion hole 24 is cut. Specifically, the cut part of the ring corresponds to the notch part 25.

  The outer peripheral shape of the first plate 20 in plan view is a substantially polygonal shape. The outer peripheral shape of the first plate 20 in plan view is a shape excluding the cutout portion 25 of the first plate 20. In the present embodiment, as shown in FIG. 4, the outer peripheral shape of the first plate 20 in plan view is a substantially octagonal shape. At this time, it is considered that the notch 25 is not provided. The outer peripheral shape of the first plate 20 in a plan view is not limited to a substantially polygonal shape, and may be a substantially circular shape or a substantially elliptical shape.

  The 1st plate 20 is formed from metal materials, such as a galvanized steel plate, for example. When the instrument main body 110 is attached to the first plate 20, the attachment spring 112 of the instrument main body 110 is pressed. For this reason, the holding power of the instrument main body 110 can be increased by using a highly rigid material as the material of the first plate 20. The first plate 20 is formed by, for example, bending or cutting a single metal plate.

  In the present embodiment, the thickness of the first plate 20 is 0.8 mm or more. Specifically, the thickness of the first plate 20 may be determined by the material of the first plate 20 and the pressure contact force of the mounting spring 112. For example, the thickness of the first plate 20 may be a value that can maintain the strength of the first plate 20 to such an extent that the first plate 20 is not deformed by the pressing force of the mounting spring 112.

  In the present embodiment, as shown in FIG. 3, the first plate 20 includes a frame body part 21, a folded part 22, two tongue pieces 23, a first insertion hole 24, a notch part 25, Two first through holes 26 and three recesses 27 are provided.

  The frame body portion 21 is an annular flat plate portion corresponding to the main body of the first plate 20. The planar view shape of the frame body portion 21 substantially matches the planar view shape of the first plate 20. The frame body portion 21 has a ring shape with a part cut. Specifically, the planar view shape of the frame body portion 21 is substantially U-shaped.

  The folded portion 22 is provided at the end of the first plate 20. Specifically, the folded portion 22 is erected on the end portion of the frame body portion 21.

  In the present embodiment, the folded portion 22 is provided at the outer peripheral end of the first plate 20. Specifically, the folded portion 22 is provided on at least one side of a substantially polygon that is an outer peripheral shape in plan view of the first plate 20. As shown in FIG. 4, the folded portion 22 is provided on a side opposite to the side on which the notch portion 25 is provided.

  The folded portion 22 may be provided at the inner peripheral end, that is, along the first insertion hole 24. When the folded portion 22 is provided at the inner peripheral end, the folding direction may be on the second plate 30 side.

  The tongue piece 23 projects from the inner wall of the first insertion hole 24 toward the inside of the first insertion hole 24. The tongue piece 23 is provided with a first through hole 26. In the present embodiment, two tongue pieces 23 are provided. The two tongue pieces 23 are arranged apart from the axis P by a predetermined angle (for example, 90 degrees) or more.

  The first insertion hole 24 is a hole for inserting the fixture body 110 of the lighting fixture 100. The plan view shape of the first insertion hole 24 is substantially circular. The diameter of the first insertion hole 24 is larger than the maximum width of the instrument body 110 and is substantially equal to the diameter φ of the embedding hole 93. Here, the diameter of the first insertion hole 24 corresponds to twice the distance r from the center (axis P) of the first insertion hole 24 to the recess 27.

  The diameter of the first insertion hole 24 only needs to be able to be inserted through the instrument main body 110. For example, when the outer diameter of the instrument main body 110 is a truncated cone shape, Also good. That is, the first insertion hole 24 has a diameter equal to or smaller than the diameter of the embedding hole 93.

  As shown in FIG. 4, the cutout portion 25 is provided so as to cut out a part of the frame body portion 21 from the first insertion hole 24 to the outer edge. That is, the cutout portion 25 corresponds to a cut portion (open portion) of the annular frame body portion 21. The width w1 of the notch 25 is larger than the thickness t of the ceiling plate 90 (see FIG. 6).

  The first through hole 26 is a hole for inserting the screw 40. An internal thread may be provided on the inner wall of the first through hole 26. The first through hole 26 is screwed with the screw 40.

  The recess 27 is provided on the inner periphery of the first plate 20 in plan view in order to restrict the movement of the attachment spring 112. The width w2 of the concave portion 27 is substantially equal to the width of the mounting spring 112, for example. When the fixture body 110 of the lighting fixture 100 is inserted through the first insertion hole 24, the attachment spring 112 is disposed in the recess 27 and presses the bottom of the recess 27 (corresponding to the inner wall of the first insertion hole 24). .

  In the present embodiment, three recesses 27 are provided in accordance with the number of attachment springs 112 of the instrument body 110, but the present invention is not limited to this. Only one recess 27 may be provided. Further, the number of tongue pieces 23 is not particularly limited. The same applies to a concave portion 37, a step portion 33, and a step portion 34 of the second plate 30 described later.

  Here, FIG. 8 is a diagram illustrating a state in which the mounting bracket 10 according to the present embodiment is attached to the ceiling plate 90. The first plate 20 is disposed on the upper surface 91 through the embedded hole 93 from the lower surface 92 side of the ceiling plate 90.

  Specifically, as shown in FIG. 8A, one of the end portions (substantially U-shaped tip portion) of the frame body portion 21 in the vicinity of the notch portion 25 is inserted into the embedding hole 93. As shown in FIG. 8B, by turning the frame body portion 21 so that the notch portion 25 sandwiches the ceiling plate 90, the entire frame body portion 21 is formed as shown in FIG. 8C. Arranged on the upper surface 91 of the ceiling plate 90.

[Second plate]
The second plate 30 is an annular plate having a second insertion hole 35. As shown in FIGS. 5 to 7, the second plate 30 is disposed on the lower surface 92 of the ceiling plate 90.

  As shown in FIG. 5, the shape of the second plate 30 in a plan view is a substantially annular shape. In addition, when the fixture main body 110 of the lighting fixture 100 is attached, at least a part of the second plate 30 is covered with the flange portion 114. For this reason, the planar view shape of the 2nd plate 30 may be designed according to the shape of the collar part 114. FIG. For example, when the collar part 114 is rectangular, the planar view shape of the second plate 30 may be rectangular.

  Further, the outer diameter of the second plate 30 may be shorter than the outer diameter of the flange portion 114. Thereby, since the 2nd plate 30 is completely covered with the collar part 114, the beauty | look as the lighting fixture 100 can be improved.

  Alternatively, the outer diameter of the second plate 30 may be larger than the outer diameter of the flange portion 114. In this case, the ceiling plate 90 can be more firmly sandwiched between the first plate 20 and the second plate 30. At this time, you may improve the beauty | look of the lighting fixture 100 by giving design nature to the shape of the 2nd plate 30 itself.

  The 2nd plate 30 is formed from metal materials, such as a zinc steel plate, for example. The second plate 30 is connected to the first plate 20 via screws 40. For this reason, a force corresponding to the pressure contact force by the mounting spring 112 of the instrument main body 110 is applied to the second plate 30 via the screw 40. For this reason, the holding force of the instrument main body 110 can be increased by using a highly rigid material as the material of the second plate 30. The second plate 30 is formed by, for example, bending or cutting a single metal plate. Moreover, since the 2nd plate 30 is attached to the lower surface 92 of the ceiling board 90, it may be painted for the purpose of rust prevention or the improvement of the beauty | look.

  The thickness of the second plate 30 is not less than 0.8 mm and not more than 1.2 mm. Specifically, the thickness of the second plate 30 may be determined by the material applied to the second plate 30 and the force applied according to the pressure contact force of the mounting spring 112. For example, the thickness of the second plate 30 may be a value that can maintain the strength of the second plate 30 to such an extent that the second plate 30 is not deformed by a force applied according to the pressure contact force of the mounting spring 112.

  In the present embodiment, as shown in FIG. 3, the second plate 30 includes a frame body portion 31, a folded portion 32, two step portions 33, two step portions 34, and a second insertion hole 35. Two second through holes 36 and three recesses 37 are provided.

  The frame body portion 31 is an annular flat plate portion corresponding to the main body of the second plate 30. The planar view shape of the frame body portion 31 substantially matches the planar view shape of the second plate 30. Specifically, the planar view shape of the frame body portion 31 is substantially annular.

  The folded portion 32 is provided at the outer peripheral end of the second plate 30. The folded portion 32 is formed by folding the outer peripheral end of the second plate 30 so as to cover the annular packing 50 as shown in FIG. The shape of the folded portion 32 is an annular shape. As shown in FIG. 6B, the height of the folded portion 32 is smaller than the thickness of the packing 50.

  The step portion 33 and the step portion 34 are provided along the second insertion hole 35. As shown in FIG. 7, the stepped portion 33 contacts the embedded hole 93. While the step portion 33 is provided with the second through hole 36, the step portion 34 is not provided with the second through hole 36. Although not shown, the stepped portion 34 also contacts the embedding hole 93.

  The step portion 33 is connected to the tongue piece portion 23 of the first plate 20 by a screw 40. Specifically, the step portion 33 includes a wall portion 33 a erected from the frame body portion 31 and a flat plate portion 33 b provided in parallel to the frame body portion 31.

  The wall portion 33 a comes into contact with the embedding hole 93. A second through hole 36 is provided in the flat plate portion 33b. The wall 33a is at least higher than the thickness of the head of the screw 40. Accordingly, as shown in FIG. 7, when the screw 40 is inserted through the second through hole 36, the head of the screw 40 does not protrude downward from the frame body portion 31. That is, the second plate 30 includes the step portion 33 so that the screw 40 and the instrument main body 110 are not in contact with each other when the instrument main body 110 is attached.

  As shown in FIG. 6, the stepped portion 33 is located on the first plate 20 side. That is, the step portion 33 is formed so as to be positioned on the first plate 20 side with respect to the frame body portion 31. Specifically, the wall portion 33 a protrudes from the frame body portion 31 toward the first plate 20, and the flat plate portion 33 b extends in parallel to the frame body portion 31 from the tip end portion (first plate 20 side) of the wall portion 33 a. Has been. The same applies to the stepped portion 34.

  The two step portions 33 are provided so that the second through hole 36 and the first through hole 26 overlap in a plan view. Specifically, as shown in FIG. 5, the two stepped portions 33 are arranged apart from each other by a predetermined angle (for example, 90 degrees) about the axis P. The predetermined angle is substantially the same as the angle formed by the two tongue pieces 23 and the axis P.

  The step portion 34 is substantially the same as the step portion 33 except that the second through hole 36 is not provided. In the present embodiment, the step portion 34 has a smaller area in plan view than the step portion 33, but is not limited thereto.

  The two step portions 34 are arranged at substantially point-symmetrical positions of the two step portions 33 with the axis P as the center. Accordingly, the movement of the second plate 30 relative to the embedding hole 93 is restricted by the step portion 33 and the step portion 34.

  The second through hole 36 is a hole through which the screw 40 is inserted. An internal thread may be provided on the inner wall of the second through hole 36. The second through hole 36 is screwed with the screw 40.

  The second insertion hole 35 is a hole for inserting the fixture body 110 of the lighting fixture 100. The plan view shape of the second insertion hole 35 is substantially circular. The diameter of the second insertion hole 35 is larger than the maximum width of the instrument body 110 and is substantially the same as the diameter φ of the embedding hole 93.

  The recess 37 is provided on the inner periphery of the second plate 30 in plan view in order to restrict the movement of the attachment spring 112. The width of the recess 37 is substantially equal to the width of the mounting spring 112, for example.

[Screw (connection member)]
The screw 40 is an example of a connecting member for connecting the first plate 20 and the second plate 30. Specifically, the screw 40 fastens the first plate 20 and the second plate 30. More specifically, the screw 40 fastens the first plate 20 and the second plate 30 by fastening the tongue piece portion 23 of the first plate 20 and the stepped portion 33 of the second plate 30, so that the ceiling plate 90 is held. That is, in the present embodiment, the mounting bracket 10 is fixed to the ceiling plate 90 by the fastening force of the screw 40.

  The screw 40 is formed from, for example, a metal material. The length of the screw 40 is not particularly limited. For example, the screw 40 has a length equal to or greater than the thickness of the ceiling plate 90.

[Packing (seal material)]
The packing 50 is an example of an annular seal member that seals between the second plate 30 and the lower surface 92 when the second plate 30 is disposed on the lower surface 92 side. The diameter of the packing 50 is larger than the diameter of the embedding hole 93 and smaller than the outer diameter of the second plate 30. The packing 50 is provided along the circumferential direction so as to fill a space between the frame body portion 31 and the lower surface 92. That is, the packing 50 is in contact with both the frame body portion 31 and the lower surface 92 over the entire circumference.

  The packing 50 is formed from a material having a low moisture permeability. As a material of the packing 50, for example, a resin material such as butyl rubber can be used.

[Pressure contact with mounting spring]
FIG. 9 is a cross-sectional view illustrating a state in which the fixture body 110 of the embedded lighting fixture 100 according to the present embodiment is attached to the mounting bracket 10. The cross section shown in FIG. 9 corresponds to the cross section taken along line VI-VI in FIG.

  As shown in FIG. 9, when the fixture main body 110 of the lighting fixture 100 is attached to the fixture 10, the attachment spring 112 presses the first plate 20. Specifically, the inner surface of the concave portion 27 of the first plate 20 is pressed. This is because the diameter of the first insertion hole 24 is substantially the same as the diameter of the embedded hole 93 or smaller than the diameter of the embedded hole 93. That is, the attachment spring 112 does not press the ceiling plate 90.

[Effects, etc.]
Conventionally, the appliance main body 110 is directly attached to the ceiling board 90 without using the mounting bracket 10. In this case, as described above, there is a problem that a part of the ceiling plate 90 is lost due to the pressing force of the mounting spring 112. When a part of the ceiling plate 90 is lost, the pressure contact of the mounting spring 112 becomes insufficient, and the holding force of the instrument main body 110 is reduced. For this reason, a clearance gap is made between the collar part 114 and the ceiling board 90, and aesthetics deteriorate.

  In addition to the deterioration of aesthetics, there is a problem that moisture and dust such as moisture enter the embedding hole 93 from the gap, particularly when the lighting apparatus 100 is used outdoors such as under the eaves of a building. Moisture or the like that has entered the embedding hole 93 may cause a failure of a power supply circuit (not shown) of the lighting fixture 100, for example.

  Further, there is a renewal request that an existing lighting fixture is removed and a new lighting fixture is attached using the removed embedding hole 93 as it is. However, when a part of the ceiling plate 90 is missing, there is a possibility that a new lighting fixture cannot be properly attached. That is, it is necessary to repair the ceiling plate 90, and the renewal cannot be performed easily and at low cost.

  With respect to these problems, the mounting fixture 10 for the embedded lighting apparatus according to the present embodiment can be mounted in the embedded hole 93 that penetrates the ceiling plate 90, and the mounting spring 112 is provided on the outer surface. An attachment fixture 10 for a lighting fixture 100 having a main body 110, which is a plate having a maximum width larger than the diameter of the embedding hole 93 and having a first insertion hole 24 having a diameter equal to or smaller than the diameter of the embedding hole 93. The first plate 20, the annular second plate 30 having the second insertion hole 35 having a diameter substantially the same as the diameter of the embedding hole 93, and the screw 40 for connecting the first plate 20 and the second plate 30. With. The first plate 20 has a shape in which a part of the ring forming the first insertion hole 24 is cut, and the second plate 30 has a stepped portion 33 provided along the second insertion hole 35. (A) The second plate 30 is opposite to the upper surface 91 of the ceiling plate 90 so that the first plate 20 is disposed on the upper surface 91 side of the ceiling plate 90 and (b) the stepped portion 33 is positioned on the first plate 20 side. (C) When the first insertion hole 24, the embedding hole 93 and the second insertion hole 35 are arranged so as to be substantially concentric in a plan view, (i) ) The stepped portion 33 abuts on the embedding hole 93. (ii) The first plate 20 and the second plate 30 are connected to the stepped portion 33 and the first plate 20 by screws 40, so that the ceiling plate 90 is sandwiched.

  Accordingly, since the diameter of the first insertion hole 24 is equal to or smaller than the diameter of the embedding hole 93, the mounting spring 112 presses the first plate 20 fixed to the ceiling plate 90, not the ceiling plate 90. Therefore, the fixture body 110 of the lighting fixture 100 can be attached to the ceiling plate 90 regardless of the state of the ceiling plate 90. Therefore, for example, the instrument body 110 can be attached to the ceiling plate 90 in a desired state even when the embedded hole 93 of the ceiling plate 90 is partially missing. Moreover, since the attachment spring 112 does not contact the ceiling plate 90, the chipping of the ceiling plate 90 can be suppressed.

  Specifically, the first plate 20 and the second plate 30 are connected to each other by screws 40, thereby sandwiching the ceiling plate 90. That is, the mounting bracket 10 is firmly fixed by the force with which the first plate 20 and the second plate 30 sandwich the ceiling plate 90. Therefore, since the first plate 20 can support the pressure contact force by the mounting spring 112, the instrument main body 110 can be firmly fixed to the ceiling plate 90. Therefore, for example, even during renewal, a new lighting fixture can be attached using the existing embedded hole 93 as it is.

  The first plate 20 disposed on the upper surface 91 of the ceiling plate 90 has a maximum width larger than the diameter of the embedding hole 93. Therefore, the first plate 20 cannot be inserted into the embedding hole 93 as it is (specifically, by translation), and the first plate 20 cannot be fixed to the upper surface 91 of the ceiling plate 90. . That is, the first plate 20 has a shape that cannot pass through the embedding hole 93 by translational movement.

  On the other hand, the first plate 20 is provided with a notch 25. The first plate 20 can be disposed on the upper surface 91 of the ceiling plate 90 by turning the first plate 20 so as to sandwich the ceiling plate 90 using the notch 25 (see FIG. 8).

  Furthermore, since the stepped portion 33 contacts the embedding hole 93, the position of the second plate 30 can be regulated. For example, since the second plate 30 is restricted from freely moving, the mounting bracket 10 can be easily fixed to the ceiling plate 90.

  Further, since the mounting bracket 10 uses the screw 40 as the connecting member, the first plate 20 and the second plate 30 can be easily connected. Therefore, for example, the burden on the operator who installs the lighting fixture 100 can be reduced. Further, by using the screw 40, the thickness of the ceiling plate 90 to which the mounting bracket 10 can be fixed is not limited. That is, since the mounting bracket 10 can be fixed to the ceiling board 90 having various thicknesses, there is an advantage that versatility is high.

  Further, for example, a folded portion 22 is provided at the end of the first plate 20.

  Thereby, since the mechanical strength of the 1st plate 20 can be raised, the deformation | transformation of the 1st plate 20 with respect to the press-contact force by the attachment spring 112 can be suppressed.

  For example, the outer peripheral shape in the planar view of the 1st plate 20 is a substantially polygon, and the folding | turning part 22 is provided in at least one side of the polygon.

  Thereby, since the outer periphery shape in the planar view of the 1st plate 20 is a substantially polygon, the folding | returning part 22 can be formed easily. For example, the folded portion 22 can be formed simply by bending one side of a substantially polygonal sheet metal. Therefore, the first plate 20 can be easily formed, and the manufacturing cost can be reduced.

  Further, for example, the mounting bracket 10 includes two screws 40 as a connecting member.

  Thereby, the 1st plate 20 and the 2nd plate 30 can be firmly connected by utilizing the two screws 40. Therefore, since the mounting bracket 10 is firmly fixed to the ceiling plate 90, the fixture body 110 of the lighting fixture 100 can be firmly attached. Further, since the number of screws 40 is not more than necessary, the fixing work of the mounting bracket 10 is facilitated, and the burden on the operator can be reduced.

  Further, for example, the shape of the second plate 30 in a plan view is a substantially annular shape.

  Thereby, since the stress concerning the 2nd plate 30 can be disperse | distributed substantially equally, the mechanical strength of the 2nd plate 30 can be raised.

  For example, the thickness of the first plate 20 is 0.8 mm or more.

  Thereby, since the mechanical strength of the 1st plate 20 can be raised, the deformation | transformation of the 1st plate 20 with respect to the press-contact force by the attachment spring 112 can be suppressed further.

  For example, the thickness of the 2nd plate 30 is 0.8 mm or more and 1.2 mm or less.

  Thereby, since the mechanical strength of the 2nd plate 30 can be raised, the deformation | transformation of the 2nd plate 30 which may occur at the time of attachment of the instrument main body 110 can be suppressed. Moreover, it can suppress that a big clearance gap is formed between the ceiling board 90 and the collar part 114 of the instrument main body 110 because the 2nd plate 30 becomes thick more than necessary. Therefore, improvement in aesthetics and circuit failure due to moisture ingress can be suppressed.

  In addition, for example, when the second plate 30 is disposed on the lower surface 92 side, an annular packing 50 is provided that seals between the second plate 30 and the lower surface 92, and the second plate 30 includes the annular packing 50. The outer periphery end portion is folded back so as to cover.

  Thereby, it is possible to suppress moisture, dust, and the like from entering the embedding hole 93 through the gap between the second plate 30 and the lower surface 92. Moreover, since the packing 50 can be made difficult to see from the outside by the folding | returning part 32, it can suppress that the beauty | look of the lighting fixture 100 is impaired.

  For example, when the lighting fixture 100 is used outdoors, it can suppress that the packing 50 is exposed to an ultraviolet-ray. Therefore, it is particularly useful when the packing 50 is formed from a resin material or the like.

  Further, for example, a recess 27 for restricting the movement of the attachment spring 112 is provided on the inner periphery of the first plate 20 in plan view.

  Thereby, the position of the attachment spring 112 with respect to the 1st plate 20 can be controlled. Therefore, for example, the attachment spring 112 is located in the notch 25 and it is possible to suppress the pressure contact force of the attachment spring 112 from being applied to the ceiling plate 90 instead of the first plate 20.

  Further, the embedded lighting fixture 100 according to the present embodiment is an embedded lighting fixture including the mounting bracket 10.

  Thereby, the instrument main body 110 can be firmly fixed to the ceiling board 90, and the defect | deletion of the ceiling board 90 can be suppressed.

(Modification)
Below, the modification of the attachment metal fitting which concerns on said embodiment is demonstrated.

  FIG. 10 is a cross-sectional view of the mounting bracket 210 in a state of being fixed to the ceiling board 90 in the present modification. The cross section shown in FIG. 10 corresponds to the cross section taken along the line VII-VII in FIG.

  The mounting bracket 210 according to the present modification is different from the above-described embodiment in that the first plate 220 is provided instead of the first plate 20. The first plate 220 includes a tongue piece 223 instead of the tongue piece 23. A plurality of tongue pieces 223 are provided. Since other points are the same as those of the above-described embodiment, description thereof is omitted.

  The tongue piece 223 is erected along the first insertion hole 24. The tongue piece 223 comes into contact with the embedding hole 93 when the first plate 220 is disposed on the upper surface 91 side of the ceiling plate 90. In the present modified example, the first through hole 26 is provided in the tongue piece 223 and is connected to the stepped portion 33 of the second plate 30 by the screw 40. Specifically, the tongue piece 223 has substantially the same shape as the stepped portion 33 provided on the second plate 30.

  As described above, in the mounting bracket 210 according to this modification, for example, the first plate 220 has a plurality of tongue pieces 223 standing along the first insertion hole 24, and the plurality of tongue pieces 223. Is in contact with the embedding hole 93 when the first plate 220 is disposed on the upper surface 91 side.

  Thereby, since the tongue piece part 223 contacts the embedding hole 93, the position of the first plate 220 can be regulated. For example, since the first plate 220 is restricted from freely moving, the mounting bracket 210 can be easily fixed to the ceiling plate 90.

  In addition, although the tongue piece part 223 was a level | step-difference part in this modification, and it showed about the example utilized for the connection by the screw 40, it is not restricted to this. The tongue piece 223 may be a wall erected along the first insertion hole 24. Specifically, the mounting bracket 210 may include a plurality of tongue pieces that do not have the first through holes 26 in addition to the tongue pieces 23 shown in the above embodiment.

(Other)
As mentioned above, although the mounting bracket for embedded luminaires and the embedded luminaire according to the present invention have been described based on the above embodiments, the present invention is not limited to the above embodiments. Absent.

  For example, in the above embodiment, the screw 40 is shown as an example of the connecting member, but the present invention is not limited to this. A bolt and a nut may be used as the connecting member.

  Further, for example, in the above embodiment, the packing 50 is shown as an example of the seal member, but the present invention is not limited to this. For example, the sealing member may be filled with a resin material such as silicon resin between the frame portion 31 of the second plate 30 and the lower surface 92 of the ceiling plate 90 and cured. Note that the mounting bracket 10 may not include the packing 50.

  For example, in the above-described embodiment, the ceiling plate 90 is shown as an example of the attached portion, but the present invention is not limited to this. The mounted portion may be, for example, a building wall or floorboard.

  In addition, the embodiment can be realized by arbitrarily combining the components and functions in each embodiment without departing from the scope of the present invention, or a form obtained by subjecting each embodiment to various modifications conceived by those skilled in the art. Forms are also included in the present invention.

10, 210 Mounting bracket 20, 220 First plate 22 Folded portion 23, 223 Tongue piece portion 24 First insertion hole 25 Notch portion 27 Recess 30 Second plate 32 Folded portion 33, 34 Stepped portion 35 Second insertion hole 40 Screw ( Connecting member)
50 Packing (seal member)
90 Ceiling panel (attached part)
91 Upper surface (first main surface)
92 Lower surface (second main surface)
93 Embedded hole 100 Lighting fixture 110 Appliance body 112 Mounting spring

Claims (11)

A mounting bracket for an embedded luminaire having an instrument body which is attachable to an embedded hole penetrating a plate-shaped attached portion and has an attachment spring on the outer surface,
An annular first plate having a first insertion hole having a maximum width larger than the diameter of the embedding hole and having a diameter equal to or smaller than the diameter of the embedding hole;
An annular second plate having a second insertion hole having a diameter substantially the same as the diameter of the embedding hole;
A connecting member for connecting the first plate and the second plate;
The first plate has a shape in which a part of a ring forming the first insertion hole is cut;
The second plate has a step portion provided along the second insertion hole,
(A) The first plate is disposed on the first main surface side of the attached portion,
(B) the second plate is disposed on the second main surface side opposite to the first main surface of the mounted portion so that the stepped portion is located on the first plate side; and
(C) When the first insertion hole, the embedding hole and the second insertion hole are arranged so as to be substantially concentric in a plan view,
(I) The step portion contacts the embedding hole,
(Ii) The first plate and the second plate, wherein the stepped portion and the first plate are connected by the connecting member, so that the attached portion is clamped. The mounting bracket according to claim 1, wherein a folded portion is provided at an end of the first plate. The outer peripheral shape of the first plate in plan view is a substantially polygonal shape,
The mounting bracket according to claim 2, wherein the folded portion is provided on at least one side of the polygon. The first plate has a plurality of tongue pieces standing along the first insertion hole,
The mounting bracket according to any one of claims 1 to 3, wherein the plurality of tongue pieces abut on the embedding hole when the first plate is disposed on the first main surface side. The mounting bracket according to claim 1, wherein the connecting member is a screw. The mounting bracket according to any one of claims 1 to 5, wherein the shape of the second plate in a plan view is a substantially annular shape. The mounting bracket according to any one of claims 1 to 6, wherein a thickness of the first plate is 0.8 mm or more. The mounting bracket according to any one of claims 1 to 7, wherein a thickness of the second plate is not less than 0.8 mm and not more than 1.2 mm. Furthermore, when the second plate is disposed on the second main surface side, an annular seal member is provided for sealing between the second plate and the second main surface,
The mounting bracket according to any one of claims 1 to 8, wherein the second plate has a folded portion whose outer peripheral end is folded so as to cover the annular seal member. The mounting bracket according to any one of claims 1 to 9, wherein a concave portion for restricting movement of the mounting spring is provided on an inner periphery of the first plate in plan view.   An embedded lighting fixture comprising the mounting bracket according to any one of claims 1 to 10.

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