JPH0521770Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) This invention relates to a ceiling recessed lighting fixture.

(Prior Art) In the ceiling structure of an office, rail members having a T-shaped cross section are arranged side by side on the ceiling side, and a ceiling panel is installed. A system ceiling lighting fixture is used in which the lighting fixture is embedded in a part of the ceiling panel. Conventionally, as shown in FIG. 11, this lighting fixture has a pair of parallel rail members a having a T-shaped cross section, and a rectangular fixture mounting space b between them. Then, a rectangular frame-shaped chassis body c, on which an electrical box (with a built-in lighting device such as a ballast) d and a lamp socket e, etc., are installed is carried in through the opening of this equipment mounting space b, and the chassis body c supporting legs f on both sides of
are mounted on the heads of rail members a and a, respectively, and then a socket cover, a reflector, a fluorescent lamp (none of which are shown), etc. are attached to the chassis body c, and the assembly is carried out.

By the way, in order to utilize the rail members a, a provided on the ceiling, such a ceiling recessed lighting fixture is
Conventionally, lighting fixtures have been fixed to rail members a, a directly by a simple locking structure without using a hanging bolt or the like.

Specifically, as shown in FIG. 13, a structure is adopted in which a bracket part i having a fixing screw h that can move forward and backward with respect to the rail member a is provided on the inside of the support leg f, and the chassis body c is After placing it on the rail members a, a, move the fixing screw h forward until the tip touches the side surface of the rail member a, and fix the chassis c to the rail members a, so that it does not move up and down. Showa 56, shown in Figures 11 and 12
- As in Publication No. 89110, an L-shaped metal fitting k with a hook j provided at the end on the longitudinal side is adopted, and the hook j is a hole provided in the side wall of an electrical box d placed on a chassis c. After hooking it to the rail member a, attach the short side to the rail member a.
The electrical box d and the chassis body c are fixed together by hooking the electrical box d onto the protrusion n.

In FIG. 13, p represents a socket cover, q represents a reflecting plate, and r represents a light shielding member such as a louver or a buffle.

(Problems to be Solved by the Invention) By the way, the chassis body c is required to be fixed with a simple operation.

However, in the former structure in which the fixing screw h is used for fixing, the fixing screw h must be tightened using a tool such as a screwdriver, which makes the fixing work quite troublesome. Furthermore, the latter method of fixing using the metal fitting k has the disadvantage that it is necessary to hook each of two points, and because the metal fitting k is hooked onto the electrical box d, the fixing work can only be done from the outside of the chassis body c. ing. In particular, since the ceiling panel was located on the outside of the chassis, the installation work was quite difficult.

This idea was made with attention to these circumstances, and it is a ceiling-embedded lighting fixture that allows the chassis body to be locked to the rail member from the inside of the fixture with a simple operation without using any tools. The purpose is to provide.

(Means for Solving the Problem) This ceiling recessed lighting fixture has a rectangular opening in a vertical wall on the peripheral side of the chassis body, and is constructed of a sheet metal having an outer diameter larger than the width of the opening. The main body is bent, and the vertically intermediate end portions of sheet metal are bent in a direction that stands up against the plate surface at both ends in the width direction, and are bent into an approximately inverted V shape, and inserted into the opening. Thereby, the device has an insertion piece that removably engages with the opening edge of the opening, and has a T-shaped plate surface portion formed by bending the insertion piece on the upper side sandwiching the insertion piece. The lower end of the insertion piece has a hook portion whose lower end is bent upward toward one side of the insertion piece, and the chassis is fixed to the chassis body by inserting the insertion piece into the opening. A regulating body is provided, and a regulating body is provided protruding from a side surface of the rail member at a position where the chassis regulating body is disposed directly above the tip of the hook portion when the chassis regulating body engages with the chassis body, and is engaged with the hook portion. Accordingly, a convex portion is provided to restrict upward movement of the chassis body.

(Function) With a one-touch operation of inserting the insertion piece of the chassis regulating body into the opening of the chassis body from the inside of the chassis body placed on the rail member, the chassis regulating body can be fixed to the chassis body without falling down, and at the same time, The hook part is arranged below the convex part of the rail member to prevent the chassis body from falling off from the rail member due to the abutment between the tip of the hook part and the convex part.

(Example) This invention will be described below based on an example shown in FIGS. 1 to 10. Figure 3 shows the system ceiling recessed lighting fixture, 1 is a pair of cross sections T
This is a rectangular appliance mounting space constructed by arranging letter-shaped rail members 2, 2 in parallel on the ceiling side of a building together with a ceiling panel (not shown). Note that in the middle of both sides of each of these rail members 2,
As shown in the figure, the convex portions 2a are provided symmetrically along the longitudinal direction.

Further, 3 is a chassis body of the lighting equipment. The chassis body 3 is a flat structure in which two elongated frames 4, 4 each having a substantially U-shaped cross section are arranged in advance in correspondence with the width of the rails, with their front and rear ends facing each other downward. In addition to being connected by mounting (attaching them over each other) substantially box-shaped connecting plates 5 and 6, support legs 13, which will be described later, are provided at four points at each of the front and rear ends. Note that the ends of the left and right walls of each of the connecting plates 5 and 6 protrude downward from the lower surface of the frame 4. Lamp sockets 7 and 8 are attached to the lower surface portions of these connecting plates 5 and 6 between the frames 4 and 4, respectively, facing each other, and a straight tube type fluorescent lamp (not shown) is attached between each pair of lamp sockets. The structure is such that it can be done.

Then, an electric box 9 containing a lighting device (not shown) such as a ballast is installed in a space adjacent to the end of the connecting plate 6 on the wide side of the chassis 3, and the front side of the lamp sockets 7 and 8 arranged in parallel is installed. In addition to installing approximately trapezoidal socket covers 10 on each of the frames 4, a reflector plate 11 having an approximately U-shaped cross section is installed between the frames 4, so that the device main body 12 is constructed.

On the other hand, the support legs 13 are all connected to the frame 4.
The coupling plates 5 and 6 are rotatably provided on respective protruding portions 5a and 6a of the coupling plates 5 and 6 that protrude downward from the lower surface thereof. This structure is shown in FIGS. 1 and 2. However, all figures show connection plate 5.
Both sides are shown, but the structure is the same in both cases.

Here, the support leg structure will be explained as follows:
As shown in Fig. 1 and Fig. 5, the support leg 13 has three sides of a rectangular plate member 14 on which are integrally provided locking pieces 15a to 15c, each of which has an L-shaped cross section and can be engaged with the upper portion of the rail member 2, protruding in the same direction.
The screw holes 16 are provided at different distances from the a to 15c.
Specifically, in the support leg 13 shown in FIG. 2, when the distance from the upper locking piece 15a is "A", the distance from the left locking piece 15b is "B", and the distance from the lower locking piece 15c is "C", the relationship of "A>B" is satisfied.
The screw hole 16 is provided at a position on the one end side where the relationship ".gtoreq.C" is satisfied.

The screw hole 16 of the support leg 13 is screwed into the tip of a set screw 18 which is inserted through a slit 17 provided in the protruding portion 5a of the connecting plate 5 so as to be able to move forward and backward, and the set screw 18 can be rotated from the fixed side to the loosened side. Then, remove the required locking pieces 15a to 1 from the support leg 13.
By selecting 5c, the chassis height can be adjusted in three stages.

A rectangular opening (square hole) is provided in each support leg 13 that serves as a vertical wall on the circumferential side of the chassis body 3.
19 are provided. Specifically, as shown in FIG. 4, the opening 19 is located in a portion adjacent to the screw hole 16 in each locking piece 15c, in the center portion in the locking piece 15b, and in a portion on the locking piece 15b side in the locking piece 15a. Each locking piece 15a to 1 is attached to the plate surface portion of each plate member 14.
Three are provided flush with the horizontal seat of 5c. By inserting a hook 20 made of sheet metal (corresponding to the chassis regulating body of this invention) into this opening 19, the chassis body 3 placed on the rail members 2, 2 can be fixed. This hook 2
The structure of 0 is shown in FIGS. 6-8.

To explain the hook 20, 21 is approximately I.
The main body is made up of a letter-shaped plate. The main body 21 has, for example, a narrow portion 21a at the center in the vertical direction having a width approximately equal to the width of the opening 19, and other upper and lower plate portions 21b and 21c larger than the opening 19. At the left and right ends of this upper thin part 21a, there is a pair of band plate-shaped strips with the same end parts raised in a direction that stands up against the plate surface and bent in a substantially inverted V-shape so as to face each other inwardly. Insert pieces 22, 22 are formed. The distance l between the bent parts 22a, 22a bent in a dogleg shape at the center of each insertion piece 22, 22 is set larger than the width dimension of the opening 19, and the distance l between the bent parts 22a, 22a is set larger than the width dimension of the opening part 19, and the distance l between the bent parts 22a, 22a is set to be larger than the width dimension of the opening part 19. It has a structure that allows for elastic displacement. However, as shown in FIGS. 1 and 2, the hooking fitting 20 is constructed by inserting the insertion pieces 22, 22 into the opening 19 using the tapered tip portion as a guide. The main body 21 can be detachably fixed to the opening edge of the opening 19 by elastic displacement. Of course, the height dimension of each insertion piece 22, 22 is smaller than the opening height of the opening 19. A T-shaped plate surface portion 21b is formed on the upper side of the main body 21 sandwiching the insertion pieces 22, 22 therebetween. When the insert pieces 22, 22 are inserted into this plate surface portion 21b,
It comes to face the wall surface around the opening 19.

Furthermore, the insertion piece 2 is attached to the lower end of the main body 21.
A band-like hook portion 23 is formed on the 2 and 22 sides, with the lower end bent so that the tip faces upward. This upward hook portion 23 is connected to the insertion piece 2.
In addition to being arranged in the same direction as the insertion pieces 2 and 22, the size is set so that when the insertion pieces 22 and 22 are inserted, they come into contact with (or closely face) the side surface directly below the protrusion 2a of the rail member 2. If the chassis body 3 is placed on the upper part of the rail member 2 and the insert pieces 22, 22 are inserted into the opening 19, the hook tip will be placed directly under the convex portion 2a, and the chassis body 3 will be placed in the upward direction. It has a structure that can regulate the movement of.

In order to securely position and fix the chassis height, for example, three protrusions 24a to 24c are provided on the outer surface around the screw hole 16 to indicate the position of the locking piece.
In addition to the projections 24a to 24c arranged at 90° intervals on a trajectory centered on the screw hole 16, corresponding projections 24a to 24c are provided around the proximal end of the slit.
Small holes 25a to 25c are provided that can be engaged with and detached from.

Therefore, when installing such a ceiling-embedded lighting system, the height of the support legs 13 is first selected. For example, select the locking piece 15c. and,
After completing the height adjustment of each support leg 13, carry the chassis 3 with the electrical box 9 attached to the ceiling from between the rail members 2, 2, and place the tips of each of the four support legs 13 in the instrument mounting space 1. Place each on the top of the rail part that makes up the opening edge.

If this continues, the chassis body 3 will easily come off upward, so the chassis body 3 is then fixed to the rail member 2.

This is accomplished by inserting a hook 20 into a rectangular opening 19 provided in the locking piece 15c, as shown in FIGS. 1 and 2. Specifically, the hook 20 is inserted inside the chassis body 3, and the hook part 23 is positioned on the lower side, then the insertion piece 2 is inserted.
2 and 22 into the opening 19. This results in
As shown in FIGS. 9 and 10, the entire hook 20 is fixed to the support leg 13 in a wedge-like manner by elastic displacement using the bases of the insertion pieces 22, 22 as fulcrums, while at the same time At the same time as it is fixed to the hook part 23, the tip of the lower hook part 23 comes into contact with the side surface portion of the rail member 2 directly below the convex part 2a.

In this way, the hook part 23 locks (contacts) with the convex part 2a, which prevents the chassis body 3 from coming off in the upward direction due to the restriction, and the simple one-touch operation of inserting the hook 20 is performed. The chassis body 3 can be fixed in position. Moreover, the insertion pieces 22, 2 of the hook fitting 20
2 engages with the rectangular opening 19, and the hook portion 23 engages with the convex portion 2a, so that the chassis body 3 can be fixed with high stability while preventing shaking. In addition, when the hook 20 is fixed, the plate surface portion 21b acts as a stopper to prevent the upper end portion from falling down due to entering the opening, so that stable fixation can always be guaranteed. Moreover, no tools are required to attach the hook 20, and it can be operated from inside the device, so it is easy to work and has good installation workability. Furthermore, the hook 20 is constructed by simply bending a single sheet metal, so it is structurally simple.
In addition, the support leg 13, which can adjust the chassis height by rotation, is provided with a plurality of openings 19, and a structure is adopted in which the hook 20 can be received from any height, so that the louver, cover, It can easily be used in any case where the chassis height can be changed by selecting a light shielding member such as a baffle.

On the other hand, after completing the installation of the chassis body 3, attach the socket cover 10 and the reflector plate 11 to the chassis body 3, and then set the fluorescent lamp.
Finish installing the lighting equipment.

Note that the protrusion 2a is not placed in the middle of the rail member 2,
It may be provided at the upper end to prevent it from coming off.

[Effects of the invention] As explained above, according to this invention, the chassis body can be moved to the rail member by inserting the insertion piece of the chassis regulating body into the opening of the chassis body, which is a simple operation that does not require any tools. This can prevent it from falling off. In addition, the chassis has an inverted V-shaped insertion piece formed at the top that engages with the rectangular opening, and an upward hook formed at the bottom that locks onto the convex part of the rail. The structure of the regulating body allows the chassis body to be fixed with high stability to prevent vibration. In addition, the T-shaped plate surface portion formed on the upper side of the insertion piece prevents the chassis regulating body from tilting during fixation.
Furthermore, since the chassis regulating body is constructed by simply bending a single sheet metal, it is structurally simple.

Furthermore, since the chassis regulating body can be attached from the inside of the appliance, the chassis regulating body can be easily attached even when there is a ceiling panel on the outside, and the fixing workability is good.

[Brief explanation of drawings]

Figures 1 to 10 show an embodiment of this invention, with Figure 1 being a partial perspective view showing a structure for preventing the main part of the chassis from falling off, Figure 2 being an exploded perspective view of that part; Fig. 3 is an exploded perspective view showing a ceiling recessed lighting fixture with a structure that prevents it from falling off, Fig. 4 is a front view showing the supporting leg of the chassis body in which the opening is provided, and Fig. 5 is a side view of the lighting fixture. 6 is a plan sectional view taken along the line - in FIG. 7 showing the chassis regulating body, and FIG. 7 is a front view of the chassis regulating body.
Fig. 8 is a side view of the chassis regulator, Fig. 9 is a side sectional view showing the ceiling recessed lighting fixture installed on the rail member, Fig. 10 is a front view of the support leg area, and Fig. 1
Figure 1 is a perspective view showing a conventional ceiling-embedded lighting fixture;
FIG. 12 is a side sectional view showing a structure for fixing the chassis body, and FIG. 13 is a side sectional view showing a different conventional chassis body fixing structure. 2a... Convex portion, 2... Rail member, 3... Chassis body, 13... Support leg, 19... Opening, 20
...Hooking fitting (chassis regulating body), 21 ... Main body,
22...Insert piece, 23...Hook part.

Claims (1)

[Claims for Utility Model Registration] A space for installing a fixture that is placed on top of the rail member that forms the edge of the opening of the space for mounting a fixture, which is composed of a plurality of parallel rail sections on which a ceiling panel is laid. The main body is made by bending a chassis body having a frame shape, a rectangular opening provided in a vertical wall on the peripheral side of the chassis body, and a sheet metal having an outer diameter larger than the width of the opening. At both ends in the width direction, the middle end portion of the sheet metal in the vertical direction is raised in a direction that stands up against the plate surface and bent into a substantially inverted V shape. has an insert piece that removably engages with the edge;
The upper side of the insertion piece has a T-shaped plate surface formed by bending the insertion piece, and the lower end of the insertion piece has a T-shaped plate surface part formed by bending the insertion piece upward so that the lower end faces one side of the insertion piece. a chassis regulating body that is fixed to the chassis body by inserting the insertion piece into the opening; and a chassis regulating body that engages with the chassis body on a side surface of the rail member; The chassis is characterized by comprising a protruding portion which is provided at a position directly above the tip of the hook portion, and which restricts the upward movement of the chassis body by locking with the hook portion. Ceiling recessed lighting fixtures.