JPH0112332Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> This invention relates to a cover mounting structure for lighting equipment.

<Summary of the invention> This invention improves the workability of attaching the cover by providing means for positioning the annular rising part of the cover within the annular falling part of the instrument body on either the instrument body to which the cover is attached or the above-mentioned cover. It is something.

<Prior art and its drawbacks> As a lighting fixture, as shown in FIG.
, the spring support member 10 on the instrument main body 101 side
3 and 104, respectively, through a pair of stiff springs 105 and 106. That is, this is one hard spring 10.
After locking the free end of 6 to one spring receiving member 108 on the cover 102 side,
05 to the other spring receiving member 107, the annular rising portion 102 of the cover 103
It is assembled in such a manner that it is substantially fitted into the annular falling portion 101a of the instrument main body 101.

However, since the tight springs 105 and 106 have a margin of movement in the left and right direction, when the cover 102 is attached, the tight springs 105 and 106
106 can easily move to either the left or right. For this reason, the annular rising portion 102a of the cover 102 deviates from the predetermined position shown by the chain line and rides on the annular falling portion 101a of the instrument body 101 as shown by the solid line. In particular, in insect-proof lighting equipment, insect-proof packing 10 is provided on the inner surface of the main body 101.
9 is pasted on the annular rising portion 102a of the cover 102, if the cover 102 is misaligned during installation,
The upper end of the instrument body 101 gets caught in the packing 109, making it increasingly difficult to attach the instrument body 101 to the cover 102.

For this reason, it is conceivable to make the diameter of the annular falling portion 101a of the instrument body 101 larger than the annular rising portion 102a of the cover 102, or to set both the stiff springs 105 and 106 inward, but the former Instrument body 101 and cover 1
02 becomes large and unsightly, and in the latter method, the tight spring 10 is removed when installing the cover.
5,106 becomes difficult to handle, which is unrealistic in any case.

<Purpose of the invention> The purpose of the invention is to provide a cover mounting structure for a lighting fixture that eliminates the above-mentioned drawbacks, allows the cover to be easily attached to an appropriate position on the fixture body, and improves workability.

<Structure and Effects of the Invention> In this invention, either the instrument body to which the cover is attached or the cover is provided with means for positioning the annular rising portion of the cover within the annular falling portion of the instrument body.

With the above structure, according to this invention, even if the tight spring on the instrument body side tries to move in either the left or right direction, the position is controlled by the positioning means, so that the annular rising portion of the cover can be moved toward the instrument body. It can be easily set within the annular falling part of the cover, improving the workability of attaching the cover.

<Embodiment> FIG. 1 is a cross-sectional view showing a cover mounting structure for a lighting fixture as an embodiment of this invention.

In the figure, the instrument main body 1 has a planar base portion 1a and an annular falling portion 1a formed around the periphery of the base portion 1a. The top of the cover 2 attached to the device main body 1 has the annular falling portion 1.
An annular rising portion 2a having a smaller diameter than b is formed. A pair of left and right hook-shaped spring support fittings 3 and 4 are fixed to the inner surface of the base portion 1a of the instrument body 1 at a predetermined interval. The coiled proximal ends 5a, 6a of a pair of tight springs 5, 6 (see Fig. 2) are hung from each of the metal fittings 3, 4, and both the tight springs 5, 6 have a predetermined movement margin in the left and right direction. A range has been set.

A pair of L-shaped spring receiving fittings 7, 8 are fixed to the cover 2 in correspondence with the above-mentioned two tight springs 5, 6.
Engagement recesses 7a and 8a are cut out to engage with the free ends 5b and 6b, respectively. On the distal end side of the annular falling portion 1b of the instrument body 1, there is a downwardly expanding annular shape that guides the annular rising portion 2a of the cover 2, which tends to shift in the left-right direction during the cover attachment operation, into the annular falling portion 1b. A guide wall 9 is integrally formed. An annular packing 10 for insect repellent is adhered to the interior of the device main body 1 and is pressed against the annular rising portion 2a.

In the above configuration, the procedure for attaching the cover 2 is as follows. First, one of the tight springs 6 is fitted into the engagement recess 8a of one of the spring receiving fittings 8 in a state in which the free ends 6b, 6b are elastically deformed. In this state, the free ends 6b, 6b of the tight spring 6 are engaged with the engagement recess 8a by their elastic spreading force, and the cover 2 is cantilevered onto the instrument body 1 by one of the tight springs 6. Next, if the free ends 5b, 5b of the other tight spring 5 are engaged with the engagement recess 7a of the other spring receiver 7 in the same manner as described above, the cover 2
The cover 2 is attached to the instrument body 1 at the position where the annular rising portion 2a press-fits the annular packing 10.

Free ends 5b, 5b of the other tight spring 5
Even if the cover 2 moves, for example, to the left, together with the stiff springs 5 and 6, when the cover 2 is locked to the spring holder 7 side, the annular rising portion 2a is moved by the annular guide wall 9 as shown by the arrow P in FIG. Since it is guided inward, the annular rising portion 2a does not go over the annular falling portion 1b, and therefore the cover 2 can be smoothly attached to the appropriate position on the instrument body 1.

In the above example, it is formed on the tip side of the annular falling portion 1b of the guide wall, but it may be formed on the entire annular falling wall 1b as shown in FIG. Further, the guide wall 9 is connected to the annular rising portion 2 of the cover 2.
The guide member 51 may be formed on the a side, or a separately formed guide member 51 as shown in FIG. 5 may be used.

FIG. 6 shows yet another embodiment. In the same figure, a regulating piece 61 is formed on the spring support fittings 4 and 3, and this regulating piece 61 tightens the spring 6 and 5 acts to restrict movement beyond a predetermined value. In this case as well, the same effects as above are achieved.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of a cover mounting structure for a lighting fixture that is an embodiment of this invention, Fig. 2 is a perspective view of a tight spring and its surrounding components, Fig. 3 is an explanatory diagram of the operation when the cover is attached, and Figs. FIG. 6 is a sectional view showing a modification of the main part of this invention. FIG. 7 is a sectional view of a conventional lighting fixture cover mounting structure. 1... Instrument main body, 1b... Annular falling part, 2
...Cover, 2a...Annular rising portion, 3, 4...
... Spring support member, 5, 6 ... Hard spring, 5b,
6b... Free end of tight spring, 7, 8... Spring receiving member, 9, 51, 61... Positioning means.

Claims (1)

[Claims for Utility Model Registration] (1) A device main body having an annular falling portion, a pair of left and right spring supporting members provided at a portion of the main body surrounded by the annular falling portion, and each of the spring supporting members, respectively. a pair of pivoted springs; a cover having an annular rising portion that is substantially fitted into the annular falling portion; and a pair of spring bearing members provided on the cover and engaged with the free end side of each stiff spring. A cover mounting structure for a lighting equipment, comprising: a means for positioning an annular rising portion of the cover to an annular falling portion of the main body during mounting operation on either the main body side or the cover side. (2) Utility model registration claim 1, wherein the positioning means is constituted by a guide wall formed on the annular falling portion or the annular rising portion and guiding the annular rising portion of the cover inward during the installation operation. Cover mounting structure for the lighting equipment described in item 1. (3) The positioning means comprises a regulating piece formed on the spring support member and regulating the movement of the stiff spring in the direction in which the annular rising part of the cover rides on the annular falling part of the instrument body during the installation operation. A lighting device according to claim 1 of the utility model registration claim.