JPH0498704A - Accessory mounting frame - Google Patents

Abstract

PURPOSE:To assemble an accessory mounting frame safely and easily on a T-bar by fitting U-shaped folded parts on both ends of a long frame, to semicircular curvatures on both ends of a short frame, and whereby tentatively stopping the short frame and the long frame on the T-bar. CONSTITUTION:In order to assemble an accessory mounting frame on a T-bar 11, two short frames 12 are opposed with each other and are bridged between two T-bars 11, and a U-shaped folded part 13-a provided on one end of a long frame 13, is fitted to a semicircular curvature 12-1 of one of the short frames 12, while both ends of another long frame are fitted in the same way to each of the two short frames 12. The condition of the accessory mounting frame is kept in the same manner as when it is temporarily stopped, and since a mounting hole 13-3 provided on the long frame 13 is set to the position correspondent to a screw hole 12-2 of the short frame 12, the accessory mounting frame can thus be consolidated by screw-stopping.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an accessory mounting frame used when attaching an accessory such as a louver to a system ceiling lighting fixture.

[Conventional technology]

A ceiling lighting system in which a ceiling beam (T-bar) with an inverted T-shaped cross section is stretched parallel to the ceiling surface, and the lighting fixture is mounted on top of the ceiling board, etc., across the two T-bars. Depending on the installation location, the fixtures can be divided into open type fixtures as shown in Figures 3 and 4, fixtures with louvers as shown in Figures 5 and 6, or fixtures with transparent covers. There is.

In the case of a lighting fixture to which accessories such as the louver 10 and transparent cover shown in Figs. 5 and 6 are attached, pull up the main body of the open-type fixture shown in Figs. 3 and 4,
A square mounting frame (short frame 1
2 and a long frame 13), and accessories such as a louver 10 or a transparent cover are installed in the mounting frame.

The conventional accessory mounting frame mentioned above, as shown in Fig. 2,
It consists of a short frame 12 with a substantially L-shaped cross section and a long frame 13 with an L-shaped cross section, and two T-bars 11 installed in parallel.
Between the two opposing short frames 12 mounted across the space,
The two long frames 13 are connected along the T-bar 11, but when connecting them, bent mounting pieces with screw holes 12-2 provided at both ends of the short frames 12 are cut and raised. A long frame 13 having mounting holes 13-3 near both ends is applied,
The set screw 14 was tightened into the screw hole 12-2.

[Problem to be solved by the invention]

In the above conventional technology, work is performed on the T-bar at the lighting equipment installation site, so when the long frame is aligned with the short frame passed between the T-bars and screwed, the mounting holes of both are aligned. If the long frame is moved out of necessity, the short frame will move and there is a risk that the short frame may fall off the T-bar. Therefore, the workability is poor, and it is difficult for a single worker to perform the assembly work.

An object of the present invention is to obtain an accessory mounting frame for a system ceiling lighting fixture that can be easily assembled by a single worker.

[Means to solve the problem]

The above purpose is to create an accessory mounting frame that is used when attaching accessories to a system ceiling lighting fixture. The above-mentioned U is a long frame in which a mounting piece that is curved in a semicircle and has a screw hole is cut and raised at right angles, and bent portions with an L-shaped cross section and U-shaped ends protrude at right angles from both ends. This is achieved by fitting the tip of the letter-shaped bent portion into the semicircular curved portion and fixing the mounting hole corresponding to the screw hole.

[Effect]

The accessory mounting frame is a frame formed on the T-bar for mounting accessories of the system ceiling lighting equipment,
It consists of two short frames that pass between the T-bars and two long frames that are provided along the T-bars, but since they are formed into a frame shape with the T-bar shape, both have an almost L-shaped cross-sectional shape. doing. Therefore, in order to fix the long frame to the short frame, the fixing surface of the long frame floats at a constant distance from the rising wall of the T-bar. Therefore, when the mounting hole and the screw hole are aligned or screwed together, there is a risk that the short frame passed between the T-bars may move and fall.

To prevent this, the present invention provides a state in which the short frame and the long frame are temporarily fixed on the T-bar by fitting the U-shaped bent portions at both ends of the long frame into the semicircular curves at both ends of the short frame. Since the mounting holes are positioned naturally, the accessory mounting frame can be assembled safely and easily on the T-bar.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a partially exploded perspective view showing one embodiment of an accessory mounting frame according to the present invention, and FIGS. 5 and 6 are cross-sectional views of a system ceiling lighting fixture with a louver frame attached using the accessory mounting frame described above. FIG. 2 is a diagram showing a half surface and a vertical cross-sectional view of an end portion. As shown in FIG. 1, the accessory mounting frame has two short frames 12 facing each other between two parallel T-bars 11, and a long frame connecting the short frames 12 along the T-bars 11. The short frame 12 has a cross-sectional shape of approximately L.
At both ends thereof, mounting pieces having semicircular curved portions 12-1 each having an outwardly curved bent base and a screw hole 12-2 are cut and raised at right angles to face each other. Further, the long frame 13 has an L-shaped cross section and has a length almost equal to the entire length of the lighting device, and has bent portions 13-1 with U-shaped ends protruding at right angles from both ends. In this embodiment, in order to prevent the long frame from deflecting when the accessory mounting frame is installed, a locking piece 13 that locks into the locking hole 2-1 of the mounting leg 2 of the instrument body is provided.
-2 is installed in the middle.

To assemble the above accessory mounting frame on the T-bar 11,
The two short frames 12 are made to face each other and passed between the two T-bars 11, and the U-shaped bent portion 13-1 provided at one end of the long frame 13 is connected to the semicircular curved portion of one of the short frames 12. 12-1, and similarly, both ends of the other long frame are fitted into the two short frames 12, respectively.

By doing this, the accessory mounting frame remains in the same state as if it had been temporarily fixed, and the mounting holes 13-3 provided in the long frame 13 are connected to the screw holes 12-2 of the short frame 12, respectively.
Since it is set in the position corresponding to the , all you have to do is just screw it in place. According to the present invention as described above,
The short frame 12 and the long frame 13 of the accessory mounting frame arranged on the T-bar 11 are temporarily fixed by fitting each other, so even one worker can safely and easily assemble the accessory mounting frame. can.

〔Effect of the invention〕

As described above, the accessory mounting frame according to the present invention is provided.

In the accessory mounting frame used when attaching accessories to the system ceiling lighting equipment, the bent bases are bent outward in a semicircular shape at both ends of two short frames with approximately L-shaped cross sections that pass between the T-bars. The above-mentioned U is a long frame in which a mounting piece that is curved and has a screw hole is cut and raised at a right angle, and has an L-shaped cross section and a bent part with a U-shaped end protruding from both ends.
By fitting the tip of the letter-shaped bent part into the semicircular curved part and fixing the mounting hole corresponding to the screw hole, a temporary attachment is made to each of the short frame and long frame constituting the accessory mounting frame. Since a locking mechanism is provided, one worker can safely and easily assemble the accessory mounting frame, regardless of the work being done in a narrow space on the T-bar.

[Brief explanation of drawings]

FIG. 1 is a partially exploded perspective view showing an embodiment of an accessory mounting frame according to the present invention, FIG. 2 is a partially exploded perspective view showing a conventional accessory mounting frame, and FIG. 3 is a vertical cross-section of an end of an open type lighting fixture. 5 is a cross-sectional half-sectional view of the louvered lighting fixture, and FIG. 6 is a longitudinal sectional view of the end portion of the lighting fixture. 10...Accessory (louver), 11...T bar 12
...Short frame, 12-1...Semicircular curved part, 12-2.
- Screw hole, 13...Long frame, 13-1...U-shaped bent piece, 13-3...Mounting hole.

Claims (1)

[Claims] 1. In the accessory mounting frame used when attaching accessories to the system ceiling lighting equipment, the bent bases are semicircular on the outside at both ends of the two short frames that are approximately L-shaped in cross section and pass between the T-bars. The mounting piece is curved into a shape and has a screw hole, cut and raised at right angles, and has an L-shaped cross section with a U-shaped end.
Fitting the tip of the U-shaped bent part of the long frame with the bent part protruding at right angles from both ends into the semicircular curved part, and fixing the mounting hole corresponding to the screw hole. An accessory mounting frame characterized by: