JPH0444587A - Flush door - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to flush doors.

(Prior Art) Conventionally, Franche doors, in which finishing materials are applied to both the front and back surfaces of a crosspiece, are light and inexpensive, and are therefore widely used as interior doors of buildings such as houses.

The structure of this flush door is based on Utility Model Application No. 63-2768.
As described in Publication No. 9, upper and lower horizontal bars and left and right vertical bars are assembled into a rectangular shape, middle bars are provided at equal intervals within this, finishing material is applied to both the front and back of these bars, and this vertical bar is assembled into a rectangular shape. A hinge is attached to the frame, and a handle is provided near the middle of the opposing vertical bars. The flush door is attached to a building pillar or the like using this hinge, and the door is opened and closed by holding a handle provided near the middle of the opposing vertical beams.

(Problems to be Solved by the Invention) The above-mentioned flush door is mainly used as an indoor door, that is, an entrance/exit door provided in a partition wall between rooms or between rooms and a hallway.

However, the rooms and hallways before and after the partition wall have different temperatures and humidity. Therefore, the front and back surfaces of the interior door are exposed to different temperature and humidity conditions.

In particular, when one room is heated in the winter or cooled in the summer, the difference in temperature and humidity becomes significantly large.

In this way, when both sides of a flush door are exposed to different conditions, the finishing material applied to both sides expands and contracts at different degrees due to temperature and humidity, causing the so-called "warpage" phenomenon in which the flush door warps. is born.

In particular, flush doors made of wood-based finishes covered with wood-based crosspieces tend to warp a lot.

This "curvature" is particularly noticeable on the side of the handle that does not have a hinge.

While this "warpage" is small, it does not cause any particular inconvenience, but
When the warpage becomes significant, there is a problem that it becomes difficult to open and close the door.

Therefore, an object of the present invention is to propose a flush door that does not cause significant "curvature" that causes difficulty in opening and closing the door.

(Means for Solving the Problems) The present invention has been made to solve the above problems and achieve the above objects. A wooden finishing material is applied to both the front and back sides of wooden bars with middle bars arranged at equal intervals in the vertical direction, a hinge is provided on the vertical bars, and a handle is provided near the middle of the opposing vertical bars. In the door, in addition to the above-mentioned middle crosspiece,
A reinforcing vertical bar was installed near the handle side, running from the upper horizontal bar to the lower horizontal bar.

In the present invention, the wooden crosspiece refers to a crosspiece made of wood or processed wood, and includes wood, particle board, hardboard, and the like.

In addition, in the present invention, wood-based finishing materials include, in addition to the above-mentioned wood and wood processed materials, paper products are used as finishing materials, and in addition, synthetic resins such as vinyl chloride resin sheets are pasted on these. This includes those impregnated with or impregnated with thermosetting resin such as polyester resin or melamine resin and cured.

In the present invention, the reinforcing vertical bars may be made of any material, but if the same material as that used for the door bars is used, there is no need to prepare another material for the reinforcing vertical bars. It's convenient.

Since the door crosspiece in the present invention uses a wooden crosspiece, it is convenient to use a wooden crosspiece as the reinforcing vertical crosspiece.

The reinforcing effect is greater as the reinforcing vertical beam is placed closer to the handle side of the flush door. A preferred position is from the vertical bar on the handle side to a position 1/4 of the width of the door in the horizontal direction.

In addition, the cross-sectional size of this reinforcing vertical beam is determined by the "curvature" of the door.
It is sufficient as long as it has the mechanical strength to prevent this from happening.Although there is no particular limitation, if you use a door crosspiece of the same size as the vertical crosspiece or center crosspiece, it is especially important to create another reinforcement vertical crosspiece. It's convenient because you don't have to.

Also, the number of reinforcing vertical bars is sufficient as long as the number is enough to prevent the door from warping, and there is no particular limitation, but if the reinforcing vertical bars are made of wood of the same size as the middle bar of the door, , it is better to provide two or more.

The second reinforcing vertical bar is installed near the handle side, passing from the upper horizontal bar to the lower horizontal bar. The reason for this is that the method of providing it from the upper horizontal rail to the lower horizontal rail has the most reinforcing effect. That is, by providing reinforcing vertical bars in the horizontal direction,
If you install a small crosspiece that does not pass from the upper horizontal crosspiece to the lower horizontal crosspiece,
This is because there is almost no reinforcing effect.

The middle crosspiece installed in the Franche door used in the present invention is provided in the vertical direction. There are crosspieces that combine horizontal crosspieces in a lattice pattern, but flush doors, which have vertical crosspieces passed from the upper horizontal crosspiece to the lower horizontal crosspiece, are less likely to warp, so they are the most popular. In the invention, the core material is provided in the vertical direction.

By providing through holes in the upper and lower horizontal bars used in the present invention, the through holes are not visible and air can freely flow in and out between the internal space and the external space of the flush door, thereby reducing the temperature of both. It is preferable to provide through holes in the upper and lower horizontal bars because this reduces the difference in humidity and reduces the occurrence of "warpage."

Furthermore, as the material for this crosspiece, plywood is preferable to wood because it causes less warping, and among plywood, parallel plywood is even more preferable because it causes less warping.

(Function) In the present invention, since the reinforcing vertical beam is provided on the handle side of the flush door where the "curvature" is the largest, the reinforcing effect is large.

Further, in the present invention, since the reinforcing vertical bars are provided from the upper horizontal bars to the lower horizontal bars, the reinforcing effect is particularly large.

In this way, since a reinforcing vertical bar is provided on the handle side of the door and from the upper horizontal bar to the lower horizontal bar, the reinforcing effect of both prevents warpage that is large enough to interfere with opening and closing the door.
will no longer occur.

(Example) Next, embodiments will be described with reference to the drawings.

FIG. 1 is a partially cutaway side view of the door of the present invention, with part of its surface removed to show the configuration of the crosspieces, and FIG. 2 is a diagram showing the relationship between the number of reinforcing vertical crosspieces and "warpage".

In Fig. 1, ■, 2 are the left and right vertical bars, and the size of this vertical bar 1.2 is 33 mm x 37 mm x 2054 mm.
It is.

A handle 11 is attached near one of the vertical bars 1, and three hinges 21 are attached to the other vertical bar 2.

3 is the upper horizontal bar. The size of this horizontal bar 3 is 30mmX
It is 37mm x 692mm.

4 is the lower horizontal beam. The size of this horizontal bar 4 is 30mm
It is 37mm x 692mm.

Reference numeral 5 denotes middle bars provided vertically inside the flush door, and three middle bars are provided at equal intervals in the horizontal direction. ing.

The size of this middle crosspiece 5 is 30mm x 37mm x 692mm
It is.

The upper horizontal bar 3 and the lower horizontal bar 4 are each provided with four through holes 31 and 41 at the middle of the junction point with the middle bar 5.

6 is a reinforcing vertical beam provided inside the flush door, and is provided near the handle 11 side.

This reinforcing vertical bar 6 is provided to pass from the upper horizontal bar 3 to the lower horizontal bar 4.

The material of these crosspieces 1 to 6 is all parallel plywood. or,
All the joints of these crosspieces are tenon-finished and glued with vinyl acetate adhesive.

7 is a finishing material, and this finishing material 7 is a decorative plywood covered with a vinyl chloride resin sheet having a thickness of 3 mm.

The flush door used in this embodiment has finishing material 7 polymerized on both the front and back sides of the crosspiece, and both are adhered with a vinyl acetate resin adhesive.

Next, in order to test the performance of the flush door of this example, the following test was conducted.

-Test method There were two rooms with a partition in between, and this partition had one entrance and exit, and the flush door of this example was attached to this entrance.

Close this flush door and keep one room at 10°C.
Hold at 180% and 25'C in the other room.

After holding at 60% condition for 12 hours, one cycle consisted of holding at 10° C. and 80% condition for 8 hours, and 10 cycles were continued.

Thereafter, the maximum gap between the center and the line connecting both ends of the side where the handle of the flush door was provided was measured as the "curvature".

・Test specimen A flush door with one reinforcing vertical bar and a flush door with two reinforcing bars (hereinafter referred to as the test specimen) were created. still,
For reference, a test specimen without reinforcing vertical bars was also created. Five specimens were prepared for each of these test specimens.

・Judgment criteria "Warpage" is a maximum of 5, which is a range that does not hinder the opening and closing of the door.
．． A flush door with a diameter of 5 mm or less, and an average value of 5 test specimens of 4 mm or less, is accepted.

・Test results Each of the five test specimens above was tested using the test method above, and the
The warpage was measured.

The results are shown in FIG. In Figure 2, there is a "warp" in the vertical direction.
The displacement amm is shown, and the number n of reinforcing vertical bars is shown in the horizontal direction.

As shown in Figure 2, this result shows that the "curvature" of a flush door without reinforcing vertical bars is 6.5 mm to 7.5 mm.
, the average is 7 mm, but the "curvature" of one reinforcing vertical bar is 6.5 mm to 5 mm, the average is 5.5 mm, and the "curvature" of two reinforcing vertical bars is 4.3 mm to 3.2 mm. , average 3.8 mm.

From this result, if there are two or more reinforcing vertical bars, it will pass.
It can be determined that there is no problem in opening and closing the door.

(Effects of the Invention) As is clear from the above explanation, the present invention simply provides a reinforcing vertical bar on the handle side from the upper horizontal bar to the lower horizontal bar. ``It prevents warping and is extremely convenient.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view showing the structure of the core material, with a part of the surface of the flush door of the present invention being cut away, and FIG. 2 is a diagram showing the number and number of reinforcing core materials. “Warpage” ■ 4・−・−−−−−・− 5−・6−−〜−−−・−・・ Reinforcement of the middle crosspiece under the horizontal crosspiece on the vertical crosspiece on the vertical crosspiece hinge side on the handle side Vertical finishing material handle

Claims (2)

[Claims] (1) Assemble the upper and lower horizontal bars and the left and right vertical bars into a rectangular shape,
Wood finishing material is applied to both the front and back sides of wooden bars with middle bars arranged at equal intervals in the vertical direction, a hinge is provided on these vertical bars, and a handle is provided near the middle of the opposing vertical bars. A flush door characterized in that a reinforcing vertical bar is provided near the handle side, in addition to the middle bar, passing from the upper horizontal bar to the lower horizontal bar. (2) The flush door according to claim 1, wherein at least one of the upper and lower horizontal bars is provided with a through hole.