JPH08151866A - Door - Google Patents

Abstract

PURPOSE: To provide a high-strength and lightweight door having little deformation such as a warp or a twist. CONSTITUTION: This door is constituted of a frame body section 2 and an end plate 3 arranged on the frame body section 2, and the end plate 3 is provided with a surface plate 35, a back plate 36, and a corrugated board body 10. The corrugated board body 10 is laminated with corrugated plates and flat plates in turn, the laminating direction is arranged in parallel with the surface plate 35 and back plate 36, and the corrugated board body 10 is integrally stuck to the surface plate 35 and back plate 36.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door provided with a core material between end plates.

[0002]

2. Description of the Related Art Conventionally, in order to reduce the weight of interior doors,
Flush doors are commonly used. 6 and 7
As shown in FIG. 5, the flash door 9 is composed of a frame body portion 91 and an end plate 93 arranged inside the frame body portion 91. The end plate 93 has a front plate 935, a back plate 936, and a core member 90 interposed between the two. The core material 90 has substantially the same area as the front plate 935 and the back plate 936. Reference numeral 98 is a base material, 94 is a connecting piece, and 92 is a frame portion. A honeycomb core is used as the core material 90. As shown in FIG. 8, the honeycomb core is made of cardboard in the shape of a honeycomb.

In the flush door 9, the core material 90 is firmly adhered to the entire surface between the front plate 935 and the back plate 936 in order to enhance the structural strength, and the three members are integrated. . Further, the core material 90 has a front plate 935 in the direction of the cavity in the honeycomb core (arrow 900 in FIG. 8).
And is arranged so as to be orthogonal to the direction of the back plate 936. That is, the entire skeleton of the honeycomb core is orthogonal to the front plate 935 and the back plate 936. As a result, the flash door 9 has excellent rigidity in the end plate portion 93.

[0004]

However, in the flush door 9, the front plate 93 is provided by the core member 90.
5 and the back plate 936 are firmly fixed in relative positions. For this reason, when the front plate 935 and the back plate 936 expand and contract due to moisture or the like during long-term use,
The entire flash door 9 may be warped or deformed such as twisted. In particular, in the longitudinal direction of the flush door 9, the amount of dimensional change is larger than in the width direction, and the deformation due to warping, twisting, etc. becomes greater.

In view of the above problems, the present invention is intended to provide a high-strength, lightweight door which is less likely to be warped, twisted or otherwise deformed.

[0006]

According to the present invention, there is provided a door having a frame body portion and an end plate disposed on the frame body portion, the end plate having a front plate, a back plate and a core member interposed therebetween. In the above, the core material is a cardboard body in which corrugated plates and flat plates are alternately laminated, and the cardboard body is arranged with its laminating direction parallel to the front plate and the back plate, and the front plate and the back plate. The door is characterized by being glued to.

What is most noticeable in the present invention is that the core material is a cardboard body in which corrugated plates and flat plates are alternately laminated, and the cardboard body is laminated in the laminating direction with the front plate and the back plate. It is to arrange them in parallel. The corrugated plate and the flat plate in the cardboard body are paper and
Made of plastic, etc.

Next, it is preferable that the cardboard body is arranged at a plurality of positions between the front plate and the back plate of the mirror plate. In this case, each cardboard body is arranged independently (see FIG. 3). Therefore, the movement of the front plate and the back plate can be absorbed by the movement of the cardboard body following the slight movement of each part of the front plate and the back plate. Therefore, it is possible to more effectively prevent the deformation such as the warp and the distortion of the door.

Further, it is preferable that the cardboard bodies are arranged at a plurality of positions along the longitudinal direction (longitudinal direction) of the door. As a result, the warp in the longitudinal direction of the door,
The deformation can be effectively prevented. When disposing the cardboard body, for example, one can be provided at the center of the end plate, or two can be provided at the end side of the end plate.

The end portions of the front plate and the back plate of the end plate are
It is preferable to have a fitting protrusion that fits into an insertion groove provided in the frame portion (see FIG. 5). That is, the frame body portion is provided with an insertion groove at its inner edge portion. On the other hand, the end plate is, for example,
It is composed of a main body portion and a frame portion integrally provided on an outer peripheral portion of the main body portion, and the fitting protrusion is provided at an end portion of the frame portion. Then, by inserting the fitting protrusion into the insertion groove,
The end plate and the frame body part are fixed.

Thus, the space between the end plate and the frame body is good, and it is possible to prevent the occurrence of a gap between the end plate and the frame body. Further, since the end plate and the frame portion are integrated, the assembling work can be simplified accordingly. Further, since the frame portion is integrally formed on the outer periphery of the end plate and the fitting projection is provided at the tip thereof, the rigidity of the outer periphery of the end plate is improved.

[0012]

In the door of the present invention, the core material is made of a cardboard body, and the core material is arranged in the direction in which the corrugated plate and the flat plate of the cardboard body are laminated. Therefore, the corrugated plate in the cardboard body serves as a cushioning material,
It is possible to absorb the expansion and contraction deformation of each of the front plate and the back plate in the surface direction and further in the thickness direction. Therefore, the front plate and the back plate can be freely expanded and contracted in an independent state. Therefore, it is possible to prevent the door from being deformed, such as warped or twisted.

Further, since the core material is composed of laminated cardboard bodies, it is possible to maintain sufficient strength against the load applied from the front plate and the back plate. Therefore, it is possible to reduce the location and amount of the core material used, and it is possible to reduce the weight of the door.

As described above, according to the present invention, it is possible to provide a high-strength and lightweight door which is less likely to be warped, twisted or otherwise deformed.

[0015]

【Example】

Example 1 A door according to an example of the present invention will be described with reference to FIGS. As shown in FIGS. 1 and 4, the door 1 of this example
Is composed of a frame body portion 2 and an end plate 3 disposed on the frame body portion 2, and the end plate 3 includes a front plate 35, a back plate 36, and a cardboard body 10 as a core material interposed between the front plate 35 and the back plate 36. Have. As shown in FIGS. 1 to 3, the corrugated cardboard body 10 is formed by alternately laminating corrugated plates 12 and flat plate 11, and the corrugated cardboard body 10 has its laminating direction in the front plate 35 and the back plate 3.
6 is arranged in parallel with the front plate 35 and the front plate 35 and the back plate 36 are bonded and integrated.

As shown in FIG. 3, the cardboard body 10 described above is used.
Are arranged at four places between the front plate 35 and the back plate 36 along the longitudinal direction (longitudinal direction) of the door 1. Further, in the lateral direction of the door 1, cardboard bodies 100 as core materials are similarly arranged at four positions.

The frame body 2 has a frame-shaped base material 28.
The front plate 25 and the back plate 26 are fixed to the base material 28 with an adhesive or the like. Reinforcing plates 281 are fixed to the central portions on both the left and right sides of the door with respect to the base material 28 of the frame body portion 2 in order to strengthen the mounting and fixing portion of the door handle. A frame portion 31 is provided on the outer peripheral portion and the central portion of the end plate 3.

Next, the function and effect of this example will be described. In the door 1, the cardboard body 1 is used as the core material.
0, the corrugated cardboard body 10 is arranged in the laminating plane direction of the corrugated plate 12 and the flat plate 11. Therefore, the corrugated plate 12 serves as a cushioning material, and it is possible to absorb the expansion and contraction deformation of the front plate 35 and the back plate 36 in the respective surface directions and further in the thickness direction. Therefore, the front plate 35 and the back plate 36 can be freely expanded and contracted in an independent state. Therefore, it is possible to prevent the door 1 from being deformed, such as warped or twisted.

The cardboard bodies 10 and 100 are
It is possible to maintain sufficient strength against the load applied from the front plate 35 and the back plate 36. Therefore, where the core material is used,
The amount used can be reduced, and the weight of the door 1 can be reduced.

The cardboard bodies 10 and 100 are
Each is independent and placed in multiple locations. Therefore, the corrugated cardboard bodies 10 and 100 can freely move and absorb the slight movements of the front plate 35 and the back plate 36. Therefore, the deformation of the door 1 such as warpage and distortion can be prevented more effectively.

Therefore, according to the present embodiment, it is possible to provide a high-strength, lightweight door with little deformation such as warping and twisting.

Embodiment 2 As shown in FIG. 5, the door 19 of this embodiment is for fitting the end portions of the front plate 35 and the back plate 36 of the end plate 3 into the insertion grooves 21 provided in the frame portion 2. The fitting protrusion 32 is provided. As shown in FIG. 5, the frame body portion 2 has insertion grooves 21 on both sides of the inner edge portion 20. On the other hand, end plate 3
Is a main body portion 33, and a frame portion 31 on the outer peripheral portion of the main body portion 33.
And a fitting projection 32 for fitting into the insertion groove 21 is provided at the tip of the frame portion 31 so as to project toward the rear surface of the end plate 3.

Further, the fitting projection 32 of the end plate 3 is inserted into the insertion groove 21, and the end plate 3 and the frame part 2 are fixed by an adhesive 315. In addition, in FIG.
Reference numerals 27 and 37 are hollow portions formed by a decorative plate or the like described later.

The frame portion 2 is composed of base materials 29 and 291 and decorative plates 251 and 261 arranged on both surfaces thereof. The insertion groove 21 is composed of a through groove provided in the decorative plates 251, 261 and a groove provided in the base material 29.
The decorative plate 251 is a front plate forming the front surface of the frame body portion 2, and the decorative plate 261 is a back plate forming the back surface thereof.

The end plate 3 has a front plate 35 arranged on the front side of the door and a back plate 36 arranged on the rear side, and the cardboard body 10 is arranged between them. Also, the end plate 3
On the inner peripheral side of the frame portion 31, there is provided an expandable rib recess 310 which is recessed in an arc shape toward the back surface side (inward direction of the door). The frame portion 31 and the base material 29 of the frame portion 2 are bonded to each other by the adhesive 3 on the outer periphery of the rib recess 310.
It is fixed by 15. The end plate 3 has a thickness of 2
It was produced by compression molding a 0 mm wood fiber mat to a thickness of 3 mm. Others are the same as in the first embodiment.

In the door 19 of this embodiment, the fitting projection 32 of the end plate 3 is fitted in the insertion groove 21 of the end part 2 of the frame, so that the space between the end plate 3 and the end of the frame 2 is accommodated. It is possible to prevent the formation of a gap between the two. Further, since the end plate 3 and the frame part 31 are integrated, the work of assembling the end plate 3 to the frame body part 2 can be simplified.

Further, a frame portion 31 is integrally formed on the outer peripheral portion of the end plate 3, and a fitting projection 32 is formed at the tip of the frame portion 31.
As a result, the rigidity of the outer peripheral portion of the end plate 3 is improved. In addition, since the rib concave portion 310 is not fixed to the frame body portion 2 but is in a free state, the end plate 3 due to moisture is not used.
The expansion and contraction of can be absorbed. Therefore, it is possible to further prevent the warp of the end plate 3 and further the warp of the door 19 as well as the effect of providing the cardboard body 10.

Therefore, according to this example, no gap is generated in the contact portion between the frame body and the mirror plate, the mirror plate can be easily attached to the frame body, and the rigidity of the outer peripheral portion of the mirror plate is excellent. A door can be provided. Other than that, the same effects as those of the first embodiment are obtained.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a door according to a first embodiment.

FIG. 2 is a perspective view of a cardboard body according to the first embodiment.

FIG. 3 is an internal explanatory diagram of the door according to the first embodiment.

FIG. 4 is a front view of the door according to the first embodiment.

FIG. 5 is a sectional view of a main part of a door according to the second embodiment.

FIG. 6 is a front view of a door in a conventional example.

FIG. 7 is a sectional view of a door in a conventional example.

FIG. 8 is an explanatory view of a main part of a core material in a conventional example.

[Explanation of symbols]

 1, 19, 9. . . Door, 10, 100. . . Cardboard body, 2. . . Frame part, 3. . . End plate, 35. . . Front plate, 36. . . Back plate,

Claims (4)

[Claims] 1. A door comprising a frame body and a mirror plate disposed in the frame body, wherein the mirror plate has a front plate, a back plate, and a core member interposed between the plate and the back plate. Is a cardboard body in which corrugated plates and flat plates are alternately laminated, and the cardboard body is arranged in the laminating direction parallel to the front plate and the back plate and is bonded to the front plate and the back plate. A door characterized by that. 2. The door according to claim 1, wherein the cardboard body is provided at a plurality of positions between a front plate and a back plate of the mirror plate. 3. The door according to claim 2, wherein the cardboard body is arranged at a plurality of positions along a longitudinal direction of the door. 4. The end portion of the front plate and the back plate of the mirror plate according to claim 1, wherein the end portions of the front plate and the back plate have fitting protrusions that fit into the insertion grooves provided in the frame portion. A door characterized by that.