JPH0430724Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a corner reinforcement structure for Japanese-style lighting equipment.

<Prior art> In general, in Japanese-style lighting equipment, as shown in Figs. Neighboring frame pieces 11 and 12
The separated butt ends of the decorative frame 10 are flush with each other at the corners of the decorative frame 10, and are fixedly integrated with each other via an adhesive 13.

The fixing structure using the adhesive 13 is, for example, a flat decorative frame 10 of an embedded lighting fixture.
In order to form a deep decorative frame 10 such as a direct-mounted lighting fixture, the frame pieces 11 and 12 are not only butted against each other in a so-called lying horizontal position on the butt sides.
It is customary to use exactly the same method even when the butt ends are butted against each other in a vertical position, so to speak.

<Problems to be Solved by the Invention> However, although the fixing structure of the corner portion using only the adhesive 13 has an excellent overall decorative effect of the decorative frame 10, it is difficult to prevent the lighting equipment from being severely damaged during packaging and transportation. When subjected to vibrations or shocks, the frame pieces 11 and 12 tend to separate from their butt-bonded surfaces. The frame pieces 11, 12
This is also because the end surface of the material easily absorbs the adhesive 13 and causes so-called non-sticking.

Also, in the installation and usage condition of the lighting equipment,
For example, when boiling, cooking, cooling, and heating are repeated indoors, the humidity and dryness will affect the
Since the frame pieces 11 and 12 made of wood expand and contract, they will also peel off from their butt-bonded surfaces.

Therefore, conventionally, as shown in FIGS. 12 and 13, a metal corner reinforcing plate 14 is attached from the back side to the plate surface of the frame pieces 11 and 12 so as to straddle the butt-adhesive surfaces of the frame pieces 11 and 12. After the reinforcing plate 14 is attached to both adjacent frame pieces 11 and 12 with a plurality of wood screws 15, the reinforcing plate 14 is attached and fixed to the adjacent frame pieces 11 and 12. If this happens, cracks and cracks will occur in the frame pieces 11 and 12, and the work of fixing them will be extremely troublesome, leading to an increase in the cost of the lighting equipment.

Moreover, although the adhesive 13 is a chemical fixing means, the reinforcing plate 14 and its wood screws 1
Since 5 is a physical or mechanical fixing means, even if the risk of frame pieces 11 and 12 falling later due to peeling from the adhesive surface can be prevented, the peeling itself can be prevented by using wood screws. 15 and the reinforcing plate 14, it is completely impossible to prevent this from happening.

This is because the cover, reinforcing plate 14, and wood screws 15 do not exhibit any synergistic fixing action with the adhesive 13 in order to prevent them from peeling off from the adhesive surface, and they only function as a backup in case of an accidental fall. Not too much.

<Means for Solving the Problems> The present invention is intended to improve such problems, and for this purpose, in order to form the corner portions of a decorative decorative frame made of wood, adjacent frame pieces are separated and the end faces of the frames are separated. In a Japanese-style lighting fixture that is fixed and integrated with adhesive after being butted against each other, a reinforcing film piece made of Japanese paper and a soft plastic film glued to both the front and back sides of the paper is attached to the back side of both sides of the adjacent frame pieces. The main feature is that the adhesive is attached and integrated so as to cover the butt-adhesive surfaces.

<Example> Hereinafter, the specific structure of the present invention will be described in detail based on the illustrated example. First, Figures 1 to 5 show a ceiling-embedded Japanese-style lighting fixture, and its decorative frame made of wood. 20 is assembled and integrated from a total of four frame pieces 21 and 22 into an overall rectangular outline shape in plan view. In other words, 1 of the decorative frame 20
As is clear from FIGS. 2 and 3, which are enlarged images of the corner parts, the cut edges of the two adjacent frame pieces 21 and 22 form an angle of approximately 45 degrees in plan view, and the edges of the edges are flush with each other. Under these conditions, the corner portions of the decorative frame 20 are shaped at approximately right angles by being fixed and integrated via the adhesive 23.

In that case, the above-mentioned lighting fixture is of a ceiling-embedded type, and the board surfaces perpendicular to the butt bonding surfaces of both frame pieces 21 and 22 are in a horizontally lying state parallel to the ceiling surface C, and therefore the decorative frame 20 Overall, the result is a flat plate shape with an extremely small amount of overhang H from the ceiling surface C.

24 is a reinforcing film piece for reinforcing the corner part of the decorative frame 20, and as shown in FIG. It consists of a laminate of 2 to 2, and has a size and shape that covers the butt adhesive surfaces of the adjacent frame pieces 21 and 22.
As shown in Fig. 4, both frame pieces 21 and 22 are attached and integrated from the back side (ceiling side) so as to straddle the plate surfaces.

The reinforcing membrane piece 24 is actually made of Waron paper (trade name of Waron Co., Ltd.) with a total thickness of about 0.45 mm, which is made of transparent vinyl chloride sheets of the same quality as each other on the front and back sides of the plastic films 26 and 27. It is preferable to do so. In addition to being relatively inexpensive and available as a lid, the vinyl chloride sheet has excellent adhesion to the frame pieces 21 and 22 made of wood, and is resistant to expansion and contraction changes in the frame pieces 21 and 22.
This is because it can effectively absorb this.

In that case, in FIGS. 2 to 4, the reinforcing membrane piece 24 is punched out into a right-angled isosceles triangle in plan view corresponding to the right-angled corner of the decorative frame 20, and both frame pieces adjacent on the bisector of the decorative frame 20 are punched out. The reinforcing membrane piece 24 is adhered to the horizontal plate surfaces of both the frame pieces 21 and 22 in its flat state so that the butt-adhering surfaces of the reinforcing membrane pieces 24 and 22 are located. As for the shape of the punch, as long as it can almost completely cover the butt bonding surface as described above, it can be an L-shape with a constant band width as shown by the solid line in Figure 6, a rectangle as suggested by the chain line in the same figure, or other shapes. Of course, it is also possible to set the contour shape as follows.

Next, FIGS. 7 to 10 show a Japanese-style lighting fixture that is directly attached to the ceiling, and even in this case, the decorative decorative frame 20a is outlined in an overall rectangular shape in plan view, but the frame pieces 21a, All the plate surfaces of the decorative frame 22a are in a so-called vertical posture perpendicular to the ceiling surface C, and as a result, the decorative frame 20a as a whole takes on the form of a box in which the amount of overhang H from the ceiling surface C is significantly large.

The butting adhesive surfaces of the adjacent frame pieces 21a and 22a are in a relationship perpendicular to the ceiling surface C, which is the same as the decorative frame 20 of the ceiling-embedded lighting fixture shown in FIGS. 1 to 5. But the 7th~
In the modified example shown in FIG. 10, a reinforcing film piece 24a is attached from the back side (inside corner side) to the vertical plate surfaces of both frame pieces 21a and 22a forming a right-angled corner of the decorative frame 20a in an L-shaped bent shape in plan view. It is attached integrally and covers the butt adhesive surfaces of both frame pieces 21a and 22a. At that time, as shown in the same figure, the upper side (ceiling side) of both frame pieces 21a, 22a
A separate reinforcing membrane piece 24a can also be attached to cover the butt-adhesive surface.

In addition, in the illustrated embodiment, Japanese-style lighting fixtures of a recessed type and a direct-attached type to the ceiling surface C will be explained, and the decorative frames 20, 20 with right-angled corner portions will be described.
Although the application state to a was explained, the decorative frame 20, 20
Even if it is a non-right-angled corner part of a, as long as the separated end faces of the two adjacent frame pieces 21, 22, 21a, 22a are fixed and integrated via the adhesives 23, 23a, the book is valid. Can apply ideas. Furthermore, it goes without saying that the present invention can be applied to Japanese-style lighting fixtures that are suspended from the ceiling C, as well as Japanese-style lighting fixtures that are embedded in walls or directly attached.

<Function> The thickness of the reinforcing membrane piece 24 is approximately 0. A piece of 45 mm waron paper was pasted on the corner of the decorative frame 20 that forms a Japanese-style lighting fixture as shown in Figs. As a result of repeated measurements of compressive shear strength using the equipped testing machine 30, approximately
An average value of 93.8Kg was obtained. Incidentally, when a compression test was performed using the same method on a test block without waron paper, the average shear strength was 78.6 kg, so if this invention is adopted, the shear strength will be reduced by about 20%. It turns out that it can be expected to increase strength.

<Effects of the invention> As described above, in the present invention, in order to form the corner parts of the decorative enclosure frames 20, 20a made of wood, the cut-out butt ends of the adjacent frame pieces 21, 22, 21a, 22a are butted against each other. , adhesive 2
3, 23a, reinforcing film pieces 24, 24a, 24b made of Japanese paper 25 and soft plastic films 26, 27 bonded to both the front and back surfaces of the reinforcing film pieces 24, 24a, 24b are fixed and integrated by the above-mentioned adjacent frame pieces 2.
From the back side to both plate surfaces of 1, 22, 21a, 22a,
Since they are bonded and integrated so as to cover the abutting adhesive surfaces, the problems of the prior art described at the beginning can be overcome very easily and reliably.

That is, the membrane pieces 24, 24a reinforcing the corner portions of the decorative frames 20, 20a are made of Japanese paper 25, soft plastic film 26 adhered to both the front and back surfaces of the Japanese paper 25, and
27, adjacent frame pieces 21 and 2
2, 21a, 22a are pasted together so as to cover the butt adhesive surfaces, so even if the wooden frame pieces 21, 22, 21a, 22a expand and contract due to changes in humidity, for example, they will be reinforced. The membrane pieces 24, 24a effectively absorb the absorption, and their peeling from the abutted adhesive surfaces can be completely prevented.

In particular, since the degree of expansion and contraction of wood differs between the direction in which the wood grain runs and the direction perpendicular to this, the reinforcing membrane pieces 24, 24a have two frame pieces 21,
Similar to the adhesive 23, 23a that butts and fixes the frames 22, 21a, 22a, they are bonded together using an adhesive that is a chemical fixing means, and moreover, the bond is applied to both frame pieces 21, 22, 21a. ，
As for the plate surface of 22a, both frame pieces 21,
22, 21a, 22a, since the two frame pieces 21,
It is possible to effectively counter peeling from the abutting adhesive surfaces of the decorative frames 20, 21a, 22a, and the synergistic effect of the two adhesive surfaces in a perpendicular relationship significantly reduces the corner portions of the decorative frames 20, 20a. It can be strengthened.

Also, since the fixing means is not wood screws 15 as shown in FIGS. 12 and 13, the wooden frame pieces 21, 22,
There is no risk of causing cracks or cracks in 21a, 22a, and the wood screws 15 are not required at all. Since the Japanese paper 25 of the reinforcing membrane pieces 24, 24a is in a sandwich state protected by the soft plastic films 26, 27, they are punched out into a contour shape corresponding to the corners of the decorative frames 20, 20a. Furthermore, both frame pieces 21, 22, 21
A, 22a can be attached very easily by automatic mechanical force, and the mass production effect can be expected to the maximum, and in that sense, it can be said that it is suitable for practical use.

[Brief explanation of the drawing]

Figure 1 is a schematic slope view showing a ceiling-embedded Japanese-style lighting fixture, Figures 2 and 3 are slope views and plan views showing extracted corners of the decorative frame, and Figure 4 is the 4th section of Figure 3. 5 is a partial enlarged sectional view of the reinforcing membrane piece; FIG. 6 is a plan view corresponding to FIG. 3 showing a modified example of the punched shape of the reinforcing membrane piece; FIG. is a schematic slope view showing a Japanese-style lighting fixture that is directly attached to the ceiling, Figure 8 is a slope view showing an extracted corner of the decorative frame, and Figure 9 is a slope view showing the corner part of the decorative frame.
-9 line sectional view, Fig. 10 is a 10-10 line sectional view of Fig. 9, Fig. 11 is an explanatory diagram showing a compression test state of a test block in a decorative frame, and Fig. 12 is a decorative figure in a conventional Japanese-style lighting fixture. FIG. 13 is an enlarged sectional view taken along line 13-13 in FIG. 12. 20, 20a... Decorative frame, 21, 22, 21
a, 22a... frame piece, 23, 23a... adhesive,
24, 24a, 24b...Reinforcement film piece, 25...Japanese paper, 26, 27...Plastic film.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In order to form the corner portions of decorative frames 20, 20a made of wood, adjacent frame pieces 21,
A Japanese-style lighting fixture in which the separated butt ends of 22, 21a, 22a are abutted against each other and then fixed and integrated with adhesives 23, 23a, consisting of Japanese paper 25 and soft plastic films 26, 27 glued to both the front and back sides of the Japanese paper 25. A Japanese-style lighting device characterized in that reinforcing film pieces 24, 24a, and 24b are integrally pasted to both plate surfaces of the adjacent frame pieces 21, 22, 21a, and 22a from the back side so as to cover the butted adhesive surfaces thereof. Corner reinforcement structure of the instrument. 2 Cut off the adjacent frame pieces 21, 22, 21a, 22a and make the decorative frame 20,
While shaping the corner portions of 20a to be approximately right angles, the reinforcing film pieces 24, which are in the form of a right isosceles triangle when viewed from above, are attached to both horizontal plate surfaces of the adjacent frame pieces 21 and 22 in a flat film state, or Alternatively, a reinforcing film piece 24a bent in an L-shape when seen from a plane is attached and integrated to the inner corners of both vertical plate surfaces of the adjacent frame pieces 21a and 22a. Corner reinforcement structure of the Japanese-style lighting equipment described.