JP6167452B2 - Adapter and downlight including the adapter - Google Patents

Description

  The present invention relates to an adapter and a downlight including the adapter.

  Conventionally, a downlight that is embedded in an embedding hole provided in a ceiling material has been provided (see, for example, Patent Document 1).

  As shown in FIGS. 9 to 11, this type of downlight includes an instrument main body 1 including a light emitting diode 10 as an electrical light source, and an attachment spring 2 that can be coupled to the instrument main body 1.

  The instrument main body 1 has a main body portion 11 inserted into an embedding hole 30 provided in the ceiling material 3, and a ring shape surrounding the lower end of the main body portion 11, on the lower surface of the ceiling material 3 around the embedding hole 30. It has the collar part 12 which contacts, and the main body side coupling | bond part 13 which can be couple | bonded with the attachment spring 2. As shown in FIG. Three main body side coupling portions 13 are arranged on the outer peripheral surface of the main body portion 11 in the circumferential direction at substantially equal intervals.

  Each of the mounting springs 2 is made of, for example, a metal plate, and can be elastically deformed so that the spring side coupling portion 21 that can be coupled to the main body side coupling portion 13 and the tip end portion of the spring side coupling portion 21 are displaced up and down. And it has the elastic contact part 22 which elastically contacts the ceiling material 3 from upper direction. That is, the ceiling material 3 is elastically sandwiched between the elastic contact portion 22 of the attachment spring 2 and the flange portion 12 of the instrument body 1.

  When the above-described downlight is embedded, the main body 11 and the mounting spring 2 are embedded from below with the elastic contact portions 22 of the mounting springs 2 elastically deformed so that the tips are directed upward. After introducing into the hole 30, the instrument body 1 is pushed upward. Then, the ceiling material 3 is sandwiched between the elastic contact portion 22 and the flange portion 12 of the mounting spring 2 that has been elastically restored, whereby the instrument body 1 is fixed to the ceiling material 3, and the embedded arrangement is provided here. Complete. The inner diameter of the embedding hole 30 is larger than the outer diameter of the main body portion 11 and smaller than the outer diameter of the flange portion 12. Accordingly, in the state where the embedding arrangement is completed as described above, the flange portion 12 abuts around the opening of the embedding hole 30 over the entire circumference. Further, when viewed from below, a gap between the outer peripheral surface of the main body 11 and the inner peripheral surface of the embedding hole 30 is covered by the flange 12.

  Hereinafter, the main body side coupling portion 13 and the spring side coupling portion 21 will be described in detail.

  Each main body side coupling portion 13 is provided on the outer peripheral surface of the main body portion 11 between the two pinching convex portions 131 arranged in the circumferential direction on the outer peripheral surface of the main body portion 11 and between the pinching convex portions 131. And an engagement hole 132. Each pinching protrusion 131 is provided with an engagement recess 133 that is open inward and upward in the direction in which the pinching protrusions 131 are arranged.

  The spring-side coupling portion 21 has a flat main body portion 211 whose thickness direction is directed in the radial direction of the main body portion 11 and a member that is elastically deformable by being separated from the main body portion 211 other than the lower end via the slit 210. And a joining piece 212. The upper end portion of the engagement piece 212 is bent so as to protrude in the direction opposite to the elastic contact portion 22 with respect to the main body portion 211, and the engagement piece 212 is elastically deformed so as to change the protruding dimension from the main body portion 211. It is possible. Further, in the spring side coupling portion 21, engaging portions 213 to be inserted into the respective engagement concave portions 133 of the main body side coupling portion 13 protrude from both sides in the width direction of the upper end portion of the main body portion 211. Yes.

  When the attachment spring 2 is attached to the instrument body 1, the engagement pieces 212 are elastically deformed, the respective engagement portions 213 are introduced into the engagement recesses 133, and then the engagement pieces 212 are elastically returned. The engaging hole 132 is engaged. Then, the displacement of the attachment spring 2 with respect to the instrument main body 1 and displacement other than upward is prohibited by the engagement portion 213 coming into contact with the inner surface of the engagement recess 133. Further, the upward displacement of the attachment spring 2 with respect to the instrument body 1 is prohibited by the engagement piece 212 coming into contact with the downward inner surface of the engagement hole 132 as shown in FIG.

JP 2006-54100 A

  When the operator has opened an excessively large embedding hole 30 due to a mistake, or when the instrument body 1 having a larger outer diameter of the main body 11 is replaced with the instrument body 1 having a smaller outer diameter of the main body 11. The inner diameter of the embedding hole 30 is too large with respect to the outer diameter of the main body 11.

  In the conventional downlight, when the inner diameter of the embedding hole 30 is too large with respect to the outer diameter of the main body 11 as described above, a sufficient holding force is not exhibited due to insufficient deformation of the mounting spring 2. Therefore, it could not be embedded.

  The present invention has been made in view of the above reasons, and an object of the present invention is to provide an adapter capable of embedding a downlight even when the inner diameter of the embedding hole is excessively large, and the adapter. It is to provide a downlight provided.

The adapter of the present invention is an adapter used together with an appliance main body provided with a light source and a downlight provided with an attachment spring that can be coupled to the appliance main body, and the appliance main body is an embedded hole provided in a ceiling material. A body part inserted into the body part, an annular shape surrounding the lower end of the body part, and a flange part that comes into contact with the lower surface of the ceiling material around the embedding hole, and the attachment located above the flange part The attachment spring has a spring-side coupling portion that can be directly coupled to the body-side coupling portion, and an elastic contact portion that elastically contacts the ceiling material from above. And a first coupling part that can be coupled to the body-side coupling part and a second coupling part that can be coupled to the spring-side coupling part.

  In the above adapter, it is preferable that the second coupling portion is coupled to the spring-side coupling portion by fitting.

  The downlight according to the present invention includes any one of the above adapters, the instrument main body, and the attachment spring.

  The downlight includes a heat sink coupled to the upper side of the instrument main body, and the heat sink is located above the main body side coupling portion so that the first coupling portion is dropped upward from the main body side coupling portion. It is desirable to have a drop-off prevention part that prevents the above-mentioned.

  According to the present invention, when the inner diameter of the embedding hole is excessively large, the embedding can be performed by interposing the adapter between the instrument main body and the mounting spring.

(A) (b) is sectional drawing which shows the principal part of the state by which the embodiment of this invention was embed | buried, respectively, (a) shows the case where an adapter is not used, (b) shows the adapter The case where it is used is shown. It is the partially broken perspective view which shows the principal part same as the above. It is a perspective view which shows the same as the above. It is a perspective view which shows an adapter same as the above. It is a perspective view which shows the principal part of the state which the adapter and the attachment spring couple | bonded together in the same as the above. It is a perspective view which shows the adapter of the example of a change same as the above. FIG. 7 is a perspective view showing a main part in a state where the adapter and the attachment spring are coupled to each other in the example of FIG. 6, as seen from a direction different from FIG. 5. It is sectional drawing which shows the principal part of the example of FIG. It is a perspective view which shows a prior art example. It is the perspective view seen from the direction different from FIG. 9 which shows the same as the above. It is sectional drawing which shows the state by which the same as the above was embedded. It is a perspective view which shows the principal part in the process in which an attachment spring is attached to an instrument main body in the same as the above. It is a perspective view which shows the principal part same as the above. It is sectional drawing which shows the principal part same as the above.

  The adapter 4 of the present invention is used together with an instrument main body 1 provided with a light source (light emitting diode 10) and a downlight provided with an attachment spring 2 that can be coupled to the instrument main body 1. The instrument main body 1 has a main body portion 11 inserted into an embedding hole 30 provided in the ceiling material 3, and a ring shape surrounding the lower end of the main body portion 11, on the lower surface of the ceiling material 3 around the embedding hole 30. It has the collar part 12 which contact | abuts, and the main body side coupling | bond part 13 which is located above the collar part 12 and can be couple | bonded with the attachment spring 2. As shown in FIG. The attachment spring 2 includes a spring side coupling portion 21 that can be coupled to the main body side coupling portion 13 and a resilient contact portion 22 that resiliently contacts the ceiling material 3 from above. The adapter 4 includes a first coupling portion 41 that can be coupled to the main body side coupling portion 13 and a second coupling portion 42 that can be coupled to the spring side coupling portion 21.

  Moreover, it is preferable that the 2nd coupling | bond part 42 is what the spring side coupling | bond part 21 couple | bonds by fitting.

  The downlight according to the present invention includes any one of the adapters 4, the instrument main body 1, and the attachment spring 2.

  Moreover, the heat sink 5 couple | bonded with the upper side of the instrument main body 1 is provided, and the heat sink 5 is located above the main body side coupling | bond part 13, and prevents dropping of the 1st coupling | bond part 41 from the main body side coupling | bond part 13 upwards. It is preferable to have a drop-off prevention part (main body part 51).

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  Since the basic configuration of this embodiment is the same as that of the conventional example, the description of the common parts is omitted.

  In the downlight of this embodiment, as shown in FIGS. 1 to 3, a heat sink 5 is fixed to the upper side of the instrument body 1. The heat sink 5 is made of, for example, aluminum die casting, is flat in the vertical direction, and has an appropriately shaped fin 52 protruding from the upper surface of the main body 51 that covers the main body 11 of the instrument main body 1 when viewed from above. The heat sink 5 is fixed to the instrument main body 1 by, for example, screwing the main body 51 to the main body 11 of the instrument main body 1. The main body 11 of the heat sink 5 is thermally connected to each light emitting diode 10 by fixing, for example, a printed wiring board on which each light emitting diode 10 is mounted on the lower surface.

  Further, in the present embodiment, as shown in FIG. 4, the first coupling portion 41 that can be detachably coupled to the body-side coupling portion 13 of the instrument body 1 and the spring-side coupling portion 21 of the mounting spring 2 are detachable. The adapter 4 which has the 2nd coupling | bond part 42 which can be couple | bonded is provided. The adapter 4 is obtained by punching and bending a metal plate, for example. Further, the adapter 4 has a connecting portion 43 having one end connected to the upper end of the first connecting portion 41 and the other end connected to the upper end of the second connecting portion 42 with the thickness direction directed in the vertical direction.

  The first coupling portion 41 has a flat shape, and is inserted into the engaging recess 133 of the main body side coupling portion 13 from above with the thickness direction directed in the radial direction of the main body portion 11. . Further, a part of the main body 51 of the heat sink 5 is located above the main body side coupling portion 13. That is, the main body 51 of the heat sink 5 functions as a drop-off prevention unit that prevents the adapter 4 from dropping off above the main body-side coupling portion 13 by contacting the adapter 4 from above.

  When the first coupling portion 41 is attached to and detached from the main body side coupling portion 13, the first coupling portion 41 may be temporarily elastically deformed to avoid interference with the heat sink 5. The first coupling portion 41 may be attached / detached in a state where the first coupling portion 41 is removed from the housing.

  The second coupling part 42 has a frame part 420 whose thickness direction is substantially parallel to the first coupling part 41. An engagement hole 422 into which the distal end portion of the engagement piece 212 of the spring side coupling portion 21 is inserted is provided in the center portion of the frame portion 420 in the thickness direction. On both sides of the engagement hole 422 in the width direction, which is a direction directed in the circumferential direction of the main body portion 11, a sandwiching convex portion 421 is one side in the thickness direction of the frame portion 420 and is a first coupling portion. It protrudes in a direction away from 41. The front end portion of each sandwich projection 421 is bent in a direction approaching the other sandwich projection 421.

  When the spring side coupling portion 21 is coupled to the second coupling portion 42, the engagement piece 212 is elastically deformed so as to avoid interference with the frame portion 420, and the spring side coupling portion 21 is sandwiched between the convex portions 421. And the engagement piece 212 is elastically returned to engage with the engagement hole 422. Then, as shown in FIG. 5, the displacement of the spring-side coupling portion 21 with respect to the second coupling portion 42 in the width direction and the displacement in the direction away from the frame portion 420 are prohibited by the sandwiching convex portions 421, respectively. The In addition, a convex portion 423 protrudes from the center of the upper end of the engagement hole 422, and the convex portion 423 comes into contact with the engagement piece 212, whereby the spring-side coupling portion 21 with respect to the second coupling portion 42. Displacement and upward displacement is prohibited. The dimension of the connecting portion 43 is so small that the spring-side connecting portion 21 connected to the second connecting portion 42 is positioned above the flange portion 12, and is the displacement of the mounting spring 2 with respect to the instrument body 1. The downward displacement is prohibited by the flange 12.

  According to the above configuration, when the inner diameter of the embedding hole 30 is excessively large, the adapter 4 is interposed between the instrument body 1 and the mounting spring 2 as shown in FIG. Can be set up. If the inner diameter of the embedding hole 30 is appropriate, the embedding arrangement is possible by directly coupling the mounting spring 2 to the instrument body 1 without using the adapter 4 as shown in FIG. is there. Specifically, for example, when the inner diameter of the embedding hole 30 is 75 mm, the adapter 4 is omitted as shown in FIG. 1A, and when the inner diameter of the embedding hole 30 is 85 mm, it is shown in FIG. Thus, the adapter 4 is used.

  Moreover, since the 2nd coupling part 42 is what the spring side coupling part 21 couple | bonds by a fitting, for example, when screwing is required in order to couple | bond the spring side coupling part 21 with the 2nd coupling part 42, it is. Compared with the improved assembly.

  Needless to say, the size and shape of each part can be changed as appropriate. For example, as shown in FIGS. 6 to 8, the width dimension (dimension in the vertical direction) of the engagement hole 422 and the sandwiching protrusion 421 in the adapter 4 may be made smaller. In the example of FIG. 6, a concave portion 424 into which the engaging piece 212 is engaged is provided at the upper edge of the engaging hole 422 in the second coupling portion 42 instead of the convex portion 423 with which the engaging piece 212 abuts. ing.

  Further, the number of main body side coupling portions 13 and attachment springs 2 is not limited to three, and may be two, four or more, for example. Furthermore, the adapter 4 may be interposed between all the main body side coupling portions 13 and the attachment spring 2, or only a part of the main body side coupling portions 13 may be interposed between the attachment springs 2. Good.

DESCRIPTION OF SYMBOLS 1 Instrument body 2 Mounting spring 3 Ceiling material 4 Adapter 5 Heat sink 10 Light emitting diode (light source)
DESCRIPTION OF SYMBOLS 11 Main body part 12 Gutter part 13 Main body side coupling | bond part 21 Spring side coupling | bond part 22 Elastic contact part 30 Embedment hole 41 1st coupling | bond part 42 2nd coupling | bond part 51

Claims (4)

An adapter body with a light source, and an adapter used with a downlight with a mounting spring that can be coupled to the instrument body,
The appliance main body has a main body portion that is inserted into an embedding hole provided in the ceiling material, and a collar portion that surrounds the lower end of the main body portion and is in contact with the lower surface of the ceiling material around the embedding hole. And a main body side coupling portion that is located above the collar portion and can be coupled to the mounting spring,
The mounting spring has a spring side coupling portion that can be directly coupled to the main body side coupling portion, and a resilient contact portion that resiliently contacts the ceiling material from above,
An adapter comprising: a first coupling portion that can be coupled to the main body side coupling portion; and a second coupling portion that can be coupled to the spring side coupling portion.   The adapter according to claim 1, wherein the second coupling portion is coupled to the spring-side coupling portion by fitting.   A downlight comprising the adapter according to claim 1, the instrument body, and the attachment spring. A heat sink coupled to the upper side of the instrument body;
The said heat sink has a drop-off prevention part which prevents the drop-off | omission of the said 1st coupling part from the said main body side coupling | bond part by being located above the said main body side coupling | bond part. Downlight.

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