JPS6328489Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to a canopy support device for a hanger applied to lighting equipment and the like.

[Background technology]

A conventional example similar to, for example, Utility Model Publication No. 57-31460 is shown in FIGS. 1 and 2. That is, 1 is a ceiling, 2 is a hanger attached to the ceiling 1, 3 is a hanging pipe suspended from the hanger 2,
4 is a canopy whose upper end touches the ceiling 1; 5 is a plastic stop spring with a groove 6 (Fig. 2); 7 is its auxiliary spring; the canopy 4 is supported by the spring action of the spring 7 and the stop spring 5. This is achieved by landing on the pipe 3.

This hanging canopy support device can easily support the canopy 4. However, when the lighting equipment suspended from the hanging pipe shakes due to earthquakes, wind, etc., the pipe 3 also shakes, and the canopy 4 is pushed against the ceiling 1, pushing down the stop ring 5. As a result, a gap is created between the canopy 4 and the ceiling surface. arise,
The drawback was that it spoiled the appearance.

On the other hand, rotating cams (for example,
67528) and nails (for example, Utility Model No. 34-2103)
The idea was to firmly tighten the canopy to the hanging pipe.

However, there were drawbacks such as the need to make the hanging pipe oval and to connect the canopy and stop ring with screws.

[Purpose of invention]

Therefore, the purpose of this invention is to provide a canopy support device for a hanging device that can prevent the canopy from sliding down due to earthquakes, etc., without making the hanging pipe oval or connecting the canopy and the stop spring with screws. The goal is to provide the following.

[Disclosure of invention]

This invention includes a suspension pipe, a stop ring that is loosely fitted into the suspension pipe and has at least a pair of protrusions on its inner peripheral surface, and a stop ring that is loosely fitted into the suspension pipe and rotatably held inside the stop ring. a pipe-biting claw which has a curved protrusion on its peripheral surface that moves toward the center by being pressed by the protrusion when rotated, and which bites into the hanging pipe due to the movement of the curved protrusion; a ring spring having a rotation preventing tongue disposed inside the curved protrusion and further projecting in the axial direction; and an engaging portion having an insertion hole through which the hanging pipe is inserted and engaging with the rotation preventing tongue. It is equipped with a canopy having a.

According to the configuration of this invention, the pipe-biting claws can be made to bite into the hanging pipe by rotating the stop spring, so the canopy can be firmly fixed to the hanging pipe, and the canopy will not slide down even if an earthquake occurs. can be prevented. Moreover, compared to the conventional example, there is no need to make the suspension pipe oval, and there is no need to connect the stop ring and the canopy with screws.

A third lighting fixture to which an embodiment of this invention is applied
This is shown in Figures 7 to 7. In other words, 8 is the appliance body, 9 is a reflector, 10 is a glow lamp, 11 is a lamp socket, 12 is a straight fluorescent lamp, 13 is a hanging pipe, 14 is a hanger (Fig. 4), 15 is a canopy, 16 is a stop ring, 17 is a ring spring. The hanger 14 is a U-shaped metal fitting with an upper piece attached to the ceiling, and a slit 18 in the lower piece hooks the caulking recess 19 of the hanging pipe 13 so that the hanger 14 is suspended. The canopy 15 has a bowl shape that covers the hanger 14 and has an upper surface in contact with the ceiling and an insertion hole 20 at the bottom.
, and a pair of engaging portions 21 are formed at one opposing edge of the insertion hole 20 . The stop ring 16 has dimensions to fit loosely into the hanging pipe 13, has an inner collar 22 at the lower end, a pair of retaining protrusions 23 at the upper end, and a pair of protrusions 24 at opposite parts of the inner peripheral surface.
is provided, and a recess 25 is formed at the tip of the protrusion 24.

The ring spring 17 is made by bending a band-shaped spring steel plate such as stainless steel into a ring shape, and is made of a harder material than the hanging pipe 13. It leaves a gap 26 at both ends, and has an outwardly curved arc shape at one opposite end. For example, a curved protrusion 27 is formed, and this curved protrusion 27
A pipe-biting pawl 28 (the bottom side of which is parallel to the axial direction) is cut and raised inwardly in the form of a triangular pawl, and a pair of anti-rotation tongues 29 are provided on the upper edge of the ring spring 17.

The canopy 15 is supported by the ring spring 17.
is bent and fitted inside the stop ring 16, and is rotatably held between the inner flange 22 and the convex portion 23. Next, pass this stop ring 16 and canopy 15 through the hanging pipe 13, and
3 on the hanger 14. The tongue piece 29 of the ring spring 17 is engaged with the engaging part 21 of the canopy 15 to push up the canopy 15 and bring its upper end into contact with the ceiling. This is the state shown in FIGS. 5 and 7. Figure 6 shows the canopy 1 with one hand in that state.
5 and rotate the stop ring 16 with the other hand to position the protrusion 24 at the curved protrusion 27. At this time, due to the dimensional relationship, the curved protrusion 27 is pushed radially inward by the protrusion 24, so the pipe biting claw 28 bites into the hanging pipe 13, and the stop ring 16 is fixed to the hanging pipe 13.
A canopy 15 is supported. Moreover, since this connection is strong, it is possible to prevent the canopy 15 from sagging due to earthquakes and the like. On the other hand, when removing the canopy 15, turn the stop ring 16 in any direction to separate the protrusion 24 from the curved protrusion 27, and the pipe biting pawl 28 will move into the hanging pipe 1 due to the spring action.
It's out of 3.

Note that the engaging portion 21 with which the rotation stopper tongue 29 engages
may be a hole.

[Effect of idea]

As described above, according to the canopy support device of the hanging tool of this invention, the pipe-biting claws can be made to bite into the hanging pipe by rotating the stop spring, so the canopy can be firmly fixed to the hanging pipe, and the canopy can be firmly fixed to the hanging pipe. Even if this occurs, the canopy can be prevented from sliding down. Furthermore, compared to the conventional example, there is an effect that there is no need to make the hanging pipe oval, and there is no need to connect the stop ring and the canopy with screws.

The following is the disclosed technology. That is, as shown in FIGS. 8 and 9, a part of the coil spring 30 is larger than the diameter of the hanging pipe 32 and wound loosely, and the remaining part 33 is smaller than the diameter of the hanging pipe 32 and wound tightly. It landed on the hanging pipe 32,
The canopy 34 is elastically supported at the upper end of the portion 31. Therefore, even if the hanging pipe 32 shakes due to an earthquake or the like as shown in FIG. 9, only the portion 31 of the coil spring 30 is elastically deformed and the remaining portion 33 does not come off, thereby preventing the canopy 34 from slipping down. 35 is a hanger, and 36 is a ceiling.

[Brief explanation of the drawing]

Figure 1 is a sectional view of a conventional example, Figure 2 is a perspective view of a stop ring and auxiliary spring, Figure 3 is a perspective view of a lighting fixture to which an embodiment of this invention is applied, and Figure 4 is an exploded perspective view of the main parts. , Fig. 5 is a cross-sectional view showing the loosely fitted state of the stop ring portion, Fig. 6 is a cross-sectional view of the hanging pipe with the claw biting into it, Fig. 7 is a cross-sectional view taken along the - line in Fig. 5, and Fig. 8 is the disclosure. A cross-sectional view of the technique, FIG. 9 is a cross-sectional view of the hanging pipe in a swaying state. 13... Hanging pipe, 15... Canopy, 1
6...stop spring, 17...ring spring, 2
0...Insertion hole, 21...Engaging portion, 24...Protrusion,
27...Curved protrusion, 28...Pipe biting claw, 29...Rotation stopper tongue piece.

Claims (1)

[Scope of utility model registration request] A suspension pipe, a stop ring that is loosely fitted to the suspension pipe and has at least one pair of protrusions on its inner peripheral surface, and a ring-shaped stop ring that is loosely fitted to the suspension pipe and rotatably held inside the stop ring. The curved protrusion has a curved protrusion on the circumferential surface that moves toward the center by being pressed by the protrusion when rotated, and the pipe-biting claw that bites into the hanging pipe due to the movement of the curved protrusion is curved. a ring spring having a rotation stopper tongue disposed inside the protrusion and further projecting in the axial direction; and a canopy having an insertion hole through which the suspension pipe is inserted and an engaging part that engages with the rotation stopper tongue. Canopy support device for hanging equipment.