JPH0322809Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a structure for attaching a lighting fixture to a ceiling bar provided on the ceiling for attaching a ceiling panel.

[Background Art] As a system ceiling, ceiling bars 6 formed of T-bars with an inverted T-shaped cross section are connected in a lattice shape and arranged on the ceiling as shown in FIG. There is a device that allows the ceiling panel and the main body case 1 of the lighting fixture to be assembled with a ceiling bar 6 by fitting the main body case 1 of the lighting fixture into the ceiling panel. Among these devices, there is one that is devised as shown in FIG. 7 so that the main body case 1 of the lighting device can be easily attached to the ceiling bar 6.

In this device, the upper end of the mounting bracket 2 is pivoted to both ends of the side surface of the main body case 1 by a shaft 10 so as to be rotatable in the vertical direction, and a spring 3 is provided between the main body case 1 and the mounting bracket 2. Attach the mounting bracket 2 so as to force the mounting bracket 2 to rotate outward.
An insertion notch 4 is formed at the lower end of the holder. Then, the mounting brackets 2 provided at both ends of the main body case 1 are rotated inward and passed from below between the parallel adjacent ceiling bars 6, and each mounting bracket 2
When the ceiling bar 6 reaches above the ceiling bar 6, the mounting bracket 2 is returned to its original state by the rotation urging force of the spring 3, and then the main body case 1 is lowered and the ceiling bar is inserted into the insertion notch 4 of the mounting bracket 2. The upper ends of the ceiling bars 6 are inserted into the ceiling bars 6, and the main body case 1 is held between the ceiling bars 6. In this case, the main body case 1 can be easily attached to the ceiling bar 6 by operating from below the ceiling bar 6.

However, in this case, the upper end of the ceiling bar 6 is only inserted into the insertion notch 4 of the mounting bracket 2, so in the event of an earthquake or when replacing the light fixture inside the main body case 1, the main body case There was a problem in that the mounting bracket 1 would float up and come off the ceiling bar 6, causing the main body case 1 to fall.

[Purpose of the invention] The present invention was made in view of the above points, and its purpose is to provide a structure for mounting lighting equipment on a ceiling bar without fear of the mounting bracket coming off from the ceiling bar. It is something to do.

[Disclosure of the invention] However, the structure for mounting a lighting fixture on a ceiling bar according to the present invention is to attach the upper ends of the mounting brackets 2 to both ends of the side surface of the main body case 1 of the lighting fixture in the vertical direction along this side surface. A spring 3 is provided between the main body case 1 and the mounting bracket 2, and is attached to the mounting bracket 2 in a guide hole 12 provided on the side surface of the main body case 1. The nut 13 is screwed onto the screw 11 inside the main body case 1, and an insertion notch 4 opening downward is formed at the lower end of each mounting bracket 2, and an insertion notch 4 is formed at the lower edge of the insertion notch 4. A locking protrusion 5 is provided that projects inwardly, and a locking portion 7 is formed on the upper part of the ceiling bar 6 arranged in parallel. The main body case 1 passed from below between the two ceiling bars 6 is placed between the two ceiling bars 6, and the upper end of each ceiling bar 6 is inserted into the insertion notch 4 of each mounting bracket 2.
The locking protrusion 5 is hooked and locked to the locking part 7 by the rotating biasing force, and the nut 13 is tightened to the screw 11 to sandwich the main body case 1 between the nut 13 and the mounting bracket 2. The locking protrusion 5 of the mounting bracket 2 is locked to the locking portion 7 of the ceiling bar 6 to prevent it from lifting up, thereby achieving the above object. The present invention will be explained in detail by way of examples.

The main body case 1 is formed as a rectangular parallelepiped box with an open bottom, and has a built-in lamp and the like. At each of a pair of opposing side surfaces of the main body case 1, upper ends of mounting fittings 2 are pivotally connected to both ends thereof by shafts 10, respectively. Each mounting bracket 2 is rotatable about a shaft 10 in the vertical direction along the side surface of the main body case 1 to which it is attached. Further, one end of a spring 3 whose center portion is held by the shaft 10 is connected to the main body case 1 and the other end to the mounting bracket 2, and the spring 3 rotates outward to each mounting bracket 2. A biasing force is given. As shown in FIG. 4, a screw 11 is fixed to the inner part of the lower part of the mounting bracket 2, and this screw 11 is inserted into an arc-shaped guide hole 12 centered on a shaft 10 provided in the main body case 1. A nut 13 formed by a wing nut is screwed into the tip of the screw 11 within the main body case 1. The mounting bracket 2 is rotationally biased by a spring 3,
The rotation range of the mounting bracket 2 is such that the screw 11 is in the guide hole 12.
limited by being inserted into the screw 1
1 is located at the outer end of the guide hole 12, the mounting bracket 2 is in a vertical state. Furthermore, an inclined side 14 is formed on the outer edge of the mounting bracket 2 and is inclined diagonally downward toward the outside, and an opening is opened downward at the end portion of the lower end of the mounting bracket 2 that protrudes to the outside of the main body case 1. An insertion notch 4 is formed therein. A locking protrusion 5 protruding into the insertion notch 4 from the side edge of the insertion notch 4 on the side of the main body case 1
is projected, and a guide inclined side 15 that slopes downward toward the main body case 1 side is provided at the lower edge of the locking protrusion 5.
is formed.

On the other hand, the ceiling bar 6 is formed into an inverted T-shaped cross section by providing a mounting piece 17 on the lower end of a vertical piece 16 on which the end of the ceiling panel is placed, and is shaped like a grid as shown in FIG. It is connected to the ceiling and placed on the ceiling.
The ceiling bar 6 is provided with protruding pieces on both sides of the vertical piece 16, and these protruding pieces can be used as the locking parts 7 in the present invention.

When attaching the main body case 1 of the above-mentioned lighting device between the parallel adjacent ceiling bars 6, 6, first unscrew the nut 13 from the screw 11, and then turn the main body case 1 as shown in Fig. 2a. The case 1 is arranged between the lower sides of the ceiling bars 6, 6. At this time, the inclined sides 14, 14 of the mounting brackets 2, 2 provided at both ends of the main body case 1 are located below the ceiling bars 6, 6, respectively. From this state, main case 1
When pushed up between the ceiling bars 6, 6, the mounting brackets 2, 2 are guided by the slopes of the slope sides 14, 14 as the slope sides 14, 14 are pressed against the lower ends of the ceiling bars 6, 6, It will be rotated inwardly against the spring 3 as shown in FIG. 6 can be passed from below. In this way, when the main body case 1 passes between the ceiling bars 6, 6, the pressing force of the ceiling bars 6, 6 on the mounting brackets 2, 2 is released, so the mounting brackets 2, 2 are moved by the elastic force of the spring 3. As shown in Fig. 2c, it rotates outward and returns to its original state. At this time, the insertion notches 4, 4 of each mounting bracket 2, 2 are located directly above each ceiling bar 6, 6. Next, when the main body case 1 is lowered downward in this state, the guide inclined sides 14, 1 of the locking protrusions 5, 5 of the mounting brackets 2, 2
4 comes into contact with the upper ends of the locking parts 7, 7 of the ceiling bars 6, 6, and the mounting brackets 2, 2 are guided by the slopes of the guide inclined sides 14, 14, and the springs 3 move in the direction of the arrow a in FIG. The upper ends of the ceiling bars 6, 6 are inserted into the insertion notches 4, 4 with the locking protrusions 5, 5 passing over the locking parts 7, 7. By inserting the upper ends of the ceiling bars 6, 6 into the insertion notches 4, 4 in this way, the upper edges of the insertion notches 4, 4 are placed on the upper ends of the ceiling bars 6, 6, and the first As shown in the figure, the main body case 1 of the lighting fixture can be supported by ceiling bars 6, 6 via mounting brackets 2, 2. At this time, since the pressing force of the locking parts 7, 7 on the locking protrusions 5, 5 is released, the mounting brackets 2, 2 are rotated as shown by the arrow b in FIG. 5 by the biasing force of the spring 3. The locking protrusions 5, 5 are locked to the lower edges of the locking portions 7, 7 of the ceiling bars 6, 6, as shown in FIG. Therefore, the main body case 1 of the lighting device is prevented from floating due to this locking. In this way, by once lifting the main body case 1 upward and then pulling it down, the main body case 1 can be automatically attached to the ceiling bar 6. After completing this installation, insert your hand into the main body case 1 through the opening on the bottom and screw 1.
Tighten the screw of nut 13 to 1, and
The side wall of the main body case 1 is sandwiched between the mounting bracket 2 and the mounting bracket 2, and the mounted state is maintained by preventing the mounting bracket 2 from rotating.

In addition, when removing the main body case 1 of the lighting fixture from the ceiling bar 6, first tighten the nut 1 to the screw 11.
Loosen the screw 3 and insert the screw 11 along the guide hole 12.
, rotate each mounting bracket 2 slightly as shown by the arrow a in FIG. (state shown in Figure 2c). Next, move the screw 11 all the way to the inner end of the guide hole 12 and rotate each mounting bracket 2.
The main body case 1 is passed downward between the ceiling bars 6 in a state in which the main body case 1 is pulled inward (the state shown in FIG. 2b), and the main body case 1 is taken out.

In the above embodiment, the main body case 1 of the lighting fixture is attached to the ceiling bars 6 arranged in a lattice pattern, but if the ceiling bars 6 are not in a lattice pattern but only in parallel, the upper end of the ceiling bar 6 The main body case 1 is prevented from moving along the ceiling bar 6 due to the clamping force caused by placing the upper edge of the insertion notch 4 of the mounting bracket 2 and locking the locking protrusion 5 to the locking part 7. Although the effect can be recognized, this movement cannot be completely prevented. Therefore, in this case, as shown in FIG. 6, a hole is provided in the vertical piece 16 of the ceiling bar 6 so that the locking part 7 is formed by this hole, and a mounting bracket is attached to the locking part 7 as the hole. 2 locking protrusion 5
It is preferable to insert and lock the tip of the
In this case, there is no possibility that the main body case 1 will move along the ceiling bar 6 by maintaining the insertion state of the locking protrusion 5 into the locking portion 7.

[Effects of the invention] As described above, in the present invention, the mounting bracket is attached to the main body case of the lighting equipment so as to be rotatable in the vertical direction, and the spring that biases the mounting bracket to rotate outward is attached to the main body case. An insertion notch is provided between the mounting bracket and the lower end of the mounting bracket to open downward, and a locking protrusion is provided at the lower edge of the insertion notch to project inward of the insertion notch, and the ceiling is arranged parallel to the ceiling. A locking part is formed on the upper part of the bar, the main body case is placed between both ceiling bars, and the upper end of each ceiling bar is inserted into the insertion notch of each mounting bracket, and the rotating biasing force of the mounting bracket by the spring is used. Since the locking protrusion is hooked onto the locking part, the upper end of the ceiling bar is inserted into the insertion notch of the mounting bracket, and when the main body case is attached to the ceiling bar, it is attached to the locking part of the ceiling bar. The locking protrusion of the mounting bracket is locked, and this locking can prevent the main case from lifting up,
This prevents the main case from falling from the ceiling bar during an earthquake or when replacing light fixtures. In addition, insert the screw attached to the mounting bracket into the guide hole provided on the side of the main body case, screw the nut onto the screw inside the main body case, tighten the nut onto the screw, and tighten the nut between the nut and the mounting bracket on the main body case. Since the locking protrusion is hooked onto the locking part of the ceiling bar, the mounting bracket can be prevented from rotating by tightening the nut inside the main body case from below the ceiling. It can be fixed to the main body case like this, and can prevent the locking protrusion from becoming unlatched from the locking part due to rotation of the mounting bracket in the event of an earthquake, etc. The main body case can be reliably prevented from falling by locking the locking protrusion to the stop portion.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of one embodiment of the present invention, Figures 2 a, b, and c are cross-sectional views showing the procedure for attaching the main body case to the ceiling bar of the above, and Figure 3 is an exploded view of the whole of the same. 4 is an enlarged perspective view of a part of the same as above; FIG. 5 is an enlarged sectional view of a part of the same; FIG. 6 is an enlarged sectional view of a part of another embodiment of the present invention;
The figure is an enlarged sectional view of a part of a conventional example. 1 is the main body case, 2 is the mounting bracket, 3 is the spring, 4
5 is an insertion notch, 5 is a locking protrusion, 6 is a ceiling bar, 7 is a locking portion, 11 is a screw, 12 is a guide hole, and 13 is a nut.

Claims (1)

[Scope of utility model registration request] The upper ends of the mounting brackets are attached to both ends of the side surfaces of the main body case of the lighting equipment so that they can rotate freely in the vertical direction along these sides, and springs that bias the mounting brackets to rotate outward are attached to the main body case and the mounting brackets. Insert the screw attached to the mounting bracket into the guide hole provided in the side of the main body case, and screw the nut onto the screw inside the main body case. At the same time, a locking protrusion protruding inward from the insertion notch is provided at the lower edge of the insertion notch, a locking portion is formed at the top of the ceiling bar arranged in parallel, and both mounting brackets are rotated inward. Place the main body case, which has been passed from below between the ceiling bars while it is moving, between both ceiling bars, insert the upper end of each ceiling bar into the insertion notch of each mounting bracket, and rotate the mounting bracket using the spring. A structure for mounting a lighting fixture on a ceiling bar, in which a locking protrusion is hooked and locked to a locking part by a biasing force, the nut is tightened to a screw, and a main body case is held between the nut and the mounting bracket.