JPS6310564Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] This invention relates to a hanging fixture for a double-sided lighting fixture.

[Background technology]

Conventional examples are shown in FIGS. 1 to 3. In the figure, 1 is the ceiling, 2 is the conduit, 3 is the hanging device body, 4,
Reference numeral 5 indicates left and right lighting fixtures (which often have a sign or other display function). The hanging tool main body 3 includes an upper frame portion 6,
It has a pair of left and right side frame parts 7, 7 and a bottom frame part 8. Both side frame portions 7, 7 have a U-shaped cross section and face each other inwardly, forming a wiring work space 9 therebetween. Then, the side surfaces of the lighting fixtures 4 and 5 are brought into contact with the outer surface thereof and fixed with mounting screws 10 and 10. The lighting fixtures 4 and 5 are also
It abuts against the lower surface of the upper frame portion 6 and is fixed with mounting screws 11, 11. The bottom frame portion 8 has a U-shaped longitudinal section and is integrally connected to the left and right side frames 7, 7. The upper frame portion 6 is inserted into the lower end of the conduit 2 and
It is fixed in a hanging manner by nuts 12, 12 screwed together. In the wiring work space 9, the conduit 2
Power lines 14 and 15 of each lighting fixture 4 and 5 are connected to a power line 13 led out from the power line 13 . 16 is a U-shaped cover for the wiring work space 9, and front and rear side plate parts 17, which cover the front and rear openings of this space 9,
17, and a bottom plate portion 18 that is integral with these side plate portions 17 and 17. With the cover 16 fitted from below into the suspension body 3 and the side plates 17, 17 in contact with the side frames 7, 7, the bottom plate 18 is fixed to the bottom frame 8 with the mounting screws 19. ing.

In the case of this conventional example, the cover 16 merely screws the bottom plate portion 18 to the hanging device main body 3;
Since the side plate portions 17, 17 are not fixed in any way, there is a high possibility that the side plate portions 17, 17 will unexpectedly open in the direction of arrows A, A (direction perpendicular to the plate surface), resulting in deterioration of the external appearance. I was afraid.

[Purpose of invention]

The purpose of this invention is to reliably prevent the side panels of the cover from opening unexpectedly in a hanging fixture for a double-sided lighting fixture as described above, and to maintain a good external appearance at all times. .

[Disclosure of invention]

The hanger for a double-sided lighting fixture of this invention has a U-shaped hanger main body having a pair of left and right side frames and a bottom frame having a U-shaped cross section as described above, and a U-shaped hanger body having a U-shaped cross section and a bottom plate. When the cover is fitted into the hanging tool body from below, it engages with the right and left side frames of the hanging tool body, which have a U-shaped cross section, and the front and rear plates of the cover are An engaging type cover expansion prevention device that prevents the cover from opening outward is attached to the inner surface of the upper half portion of the front and back side plate portions of the cover.

Since this cover expansion prevention device is of an engagement type, it has better operability than a screw type. Furthermore, since it is attached to the inner surface of the cover and is hidden from the outside, it meets the purpose of this invention, which is to improve appearance.

A first embodiment of this invention will be explained based on FIGS. 4 to 6. The cover expansion prevention device 20 includes an elastic engagement portion 21, which is formed by bending both ends of a band-shaped spring material.
21, and two expansion prevention devices 2
The longitudinal center portions of each of 0 and 20 are the front and rear side plate portions 1.
7, 17 near the upper ends of the bolts.
It is rotatably supported by nuts 22, 22. In FIG. 5, the engaging parts 21, 21 are elastically engaged with the end plates 7a, 7a of the side frame parts 7, 7, and the side plate parts 1
7, 17 and the engaging parts 21, 21 form the end plates 7a, 7a.
It shows how it is being held. The frictional force acting at this time also prevents unexpected rotation of the expansion prevention tool 20. The rest of the structure is similar to the conventional example shown in FIGS. 1 to 3.

Next, the operation of attaching the cover 16 to the suspender main body 3 will be explained. The length of the expansion prevention tool 20 is the left and right end plate 7.
It is larger than the dimension between a and 7a. For this purpose, each expansion preventer 20 is tilted as shown in FIG. 6A, and passed between the left and right end plates 7a, 7a as shown in FIG. 6B. Next, when the cover 16 is pushed up, the sloping upper end of the expansion prevention tool 20 hits the bottom surface of the upper frame part 6 of the hanging tool main body 3, as shown in FIG. 6C. For this reason, the spread prevention tool 20 is rotated and pushed back to a horizontal position. At this time, the left and right engaging portions 21,
21 is elastically deformed and rides on the end plates 7a, 7a. That is, when the cover 16 is fitted into the suspender main body 3 from below, the expansion preventer 20 automatically engages with the side frames 7, 7. Thereafter, the cover 16 is fixed to the hanger main body 3 with screws 19.

When you want to open the wiring work space 9 for checking the wiring state or repairing the wiring, remove the screws 19 and pull down the cover 16. is maintained and received by the bottom frame part 8. That is, there is an advantage that inspection, repair, etc. can be performed while the cover 16 is temporarily suspended.

A second embodiment of this invention will be explained based on FIGS. 7 and 8. Two expansion prevention devices 20 similar to those in the first embodiment are provided on both side plate portions 17 and 1 of the cover 16.
It is fixed in a horizontal position to the inner surface near the upper end of 7 by welding, gluing, etc. Correspondingly, in each of the left and right side frame portions 7, 7, respective end plates 7a,
Near the lower end of 7a, cutouts 23, 23 are formed for initial fitting of the elastic engagement portions 21, 21 at both ends of the expansion prevention device 20, as shown in FIG. 8A. When the cover 16 is pulled down from the state shown in FIG.
Since the cover 16 is supported by the end plate portions 7a ₁ and 7a ₁ below 3 and 23, the cover 16 is temporarily suspended as shown in FIG. 8C, similar to the first embodiment.

Other examples of this invention include the following.

Elastic engagement portions 21 and 2 of cover expansion prevention tool 20
1 is configured inelastically, that is, in such a way that it simply hooks.

In the above two embodiments, the two engaging parts 21, 21 were formed at both ends of one strip material, but instead of this, the two engaging parts 21, 21 are separated.

Although the effect of preventing the cover from opening outward is slightly inferior, an expansion preventing device 20 is provided between about 1/2 of the height of the cover 16 (in the upper half). If it is located in the upper half of the cover 16, it will have a considerable effect compared to the conventional example.

[Effect of idea]

This invention's hanging fixture for double-sided lighting fixtures not only reliably prevents the cover from opening unexpectedly, but also prevents the cover from opening in an engaging manner, so it is suitable for use with screw-type fixtures. Compared to this, the operability is good, and the fact that the expansion prevention tool is hidden inside the cover has the effect that the cover can be installed in a good appearance.

[Brief explanation of the drawing]

Fig. 1 is an overall front view showing the conventional example, Fig. 2 is a sectional view of the main part, Fig. 3 is an exploded perspective view thereof, Fig. 4 is a perspective view of the cover of the first embodiment of this invention, FIG. 5 is a sectional view of the cover attached, FIGS. 6A to 6D are diagrams for explaining the operation, FIG. 7 is a perspective view of the cover of the second embodiment, and FIGS. 8A to C are diagrams for explaining the operation. 3... Hanging tool body, 4, 5... Lighting equipment, 6...
Upper frame part, 7... Side frame part, 8... Bottom frame part, 9... Wiring work space, 16... Cover, 17... Side plate part, 18
...Bottom plate part, 20...Cover expansion prevention device, 21...
Engagement portion, 23...notch.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A pair of left and right side frames facing each other inwardly to form a wiring work space between them, each having a U-shaped cross section and a mounting portion for a lighting fixture on each outer side; A suspension main body having a bottom frame that connects these both side frame parts, front and rear side plate parts that cover the front and rear openings of the wiring work space, and connecting these front and rear side plate parts to the bottom frame of the suspension main body. A U-shaped cover consisting of a fixed bottom plate, and a U-shaped cover that is attached to the inner surface of the upper half of the front and rear side plates of this cover, and when the cover is fitted into the suspension body from below, the left and right sides of the suspension body are attached. A hanging tool for a double-sided lighting fixture, comprising a cover expansion prevention device that engages with a frame portion and prevents the front and rear side plate portions of the cover from opening outward. (2) The cover expansion prevention device is rotatably supported at the left and right center portions near the upper ends of the front and rear side panels, and has engaging portions for the left and right frame portions at both longitudinal ends thereof. When the cover is fitted into the suspender main body while being inclined with respect to the horizontal direction, it is configured so that it rotates to a horizontal position due to contact with the bottom surface of the upper frame of the suspender main body and performs an engagement action. A hanging fixture for a double-sided lighting fixture as set forth in claim (1) of the registered utility model. (3) The cover expansion prevention device is fixed near the upper ends of the front and rear side plate portions, while the fixed cover expansion prevention device is fixed at both ends near the bottom ends of the left and right side frame portions of the hanging device main body. A hanging fixture for a double-sided lighting fixture according to claim (1) of the utility model registration, in which a notch is formed for initial fitting of the joint part. (4) The engaging portion of the cover expansion prevention device is configured as a leaf spring-like member that elastically engages with the left and right side frame portions of the hanging device main body. Hanging fixture for double-sided lighting equipment described in paragraph (1), (2), or (3).