JPH07197750A - Door - Google Patents

Abstract

PURPOSE:To enhance rigidity without weight increase so as to prevent generation of twist deformation by forming an inward framework material of square pipe formed of metal thin board material. CONSTITUTION:An inward framework material 2 disposed in parallel at a required interval from an outward framework material composing a vertical framework of a door frame part is made of square pipe made of a metal thin board material. The front and rear faces of the material 2 are made wide in width as the abutting face 2a on which a door front and rear face boards 5 abut. An end around a paper core forming an inner structure of the door central part is directly fixed to one side of the material 2. The material 2 is formed of square pipe and thus the abutting face against the board 5 is made wide without increasing weight so much. It is thus possible to enhance rigidity of the whole door against twist or the like.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to improvements in flush doors.

[0002]

2. Description of the Related Art Flush doors widely used as fittings for houses include those having a picture frame on the front surface or front and back surfaces and those having a flat front and back surface without a picture frame. This configuration is as shown in FIGS. 7 and 8 showing a single-sided framed flush door.

[0003] That is, the structure of this door is roughly divided into a door frame portion C having left and right vertical frames A and upper and lower horizontal frames B, and a door central portion D surrounded by the door frame portion C. Made of The vertical frame A and the horizontal frame B each have a pair of outer and inner wooden frame members a1, a2, b1, b2 or a core member, and the inner frame member a2 has an internal structural member E at the center portion D of the door. Are joined. The inner frame member a2 is formed to have an L-shaped cross section, and the peripheral portion of the front panel F of the door central portion D is fixed to this step portion via a frame G. The inner structural material E such as the paper core is the inner frame material a2.
Is directly fixed to the side surface of the stepped portion. In a door having no frame G, the inner frame member a2 has a rectangular cross section like the outer frame member a1, and an internal structural member such as a paper core is directly fixed to one side surface of the inner frame member a2.

[0004]

However, the door having such a structure does not have sufficient rigidity against twisting and twisting.
For this reason, as shown in FIG. 9, there is a technique in which a reinforcing material H having a U-shaped cross section is additionally provided inside the inner frame member a2 to enhance the robustness of the entire door.

However, since the reinforcing member H is a plate member having a U-shaped cross section, sufficient bending and torsional rigidity cannot be obtained. In addition, it is conceivable to increase the number of frame members in the door frame part or to use a high strength material, but there is a problem that the weight increases and the door opening and closing is hindered or expensive. is there.

In view of the above-mentioned problems of the prior art, an object of the present invention is to provide a door which is lightweight but has increased rigidity, is less likely to be twisted and deformed, and contributes to reduction of the number of parts and reduction of manufacturing cost. It is in.

[0007]

[Means for Solving the Problems] In order to solve the above-mentioned problems, the first invention is surrounded by a door frame part having left and right vertical frames and upper and lower horizontal frames, and the door frame part. It is composed of the central part of the door, and the vertical frame and the horizontal frame of the door frame part are respectively provided with an outer frame member and an inner frame member, and the inner frame member is joined to the inner structural material of the door central part by a flash structure. In the door, the inner sill member is made of a square pipe made of a thin metal plate material, and the inner sill member has a wide contact surface with which the front and rear door surface plates are abutted, and the inner contact member has It is characterized in that it has a fixing surface to which the internal structural material of the central part of the door is directly fixed, and the front and back surfaces of the door frame part and the central part of the door are covered by the above-mentioned door surface plate without interposing a frame. .

A second aspect of the present invention relates to a door having a frame on both sides, and in a door having a flash structure similar to that of the first aspect, the door center portion uses the frame to cover the front and back edges of the door plate panel. It is fixed to the door frame part, and the inner frame member of the door frame part consists of a square pipe formed by a thin metal plate material, and the inner frame member is contacted with the front and rear surface plates of the door frame part. It is characterized in that a wide contact surface is provided on at least one side thereof with a groove portion into which the core material of the door plate panel or the core plate can be fitted in the longitudinal direction.

A third aspect of the present invention relates to a door having a frame on one side, and in the same structure as the flush door as described above, the central part of the door is fixed to the door frame by the frame at the front of the peripheral edge of the main body. , The inner frame member of the door frame portion is made of a square pipe made of a thin metal plate material, and the inner frame member has a wide contact surface with which the front face plate of the door frame portion abuts. A cross-sectional shape having a wide abutting surface on the rear surface against which the door surface plate abuts, and a projection on one side of the front surface having a step that enters the main body of the door and receives the inner surface of the frame The point is that it is formed.

[0010]

In this door, since the inner frame member of the door frame is formed by the thin square pipe member, the contact surface with the face plate can be widened without increasing the weight so much. Therefore, the rigidity of the entire door against twisting or the like is increased. Compared to the conventional one in which a reinforcing material is combined with the inner frame material, both are integrated, so the number of parts can be reduced accordingly.

[0011]

The present invention will be described below in detail with reference to the illustrated embodiments. FIG. 1 is a cross-sectional view of a door according to an embodiment of the present invention. This door is a flat flush door with no frame,
In the figure, reference numeral 1 is a wooden outer frame member 1 and 2 which form a vertical frame of the door frame portion, and are inner frame members which are parallel to the outer frame member 1 with a required gap. The inner frame member 2 is made of a square pipe made of a metal thin plate material, and the front and rear surfaces thereof are formed wide as contact surfaces 2a with which the door front / back plate 5 is contacted. Incidentally, in this embodiment, the side surface width is 30.2 mm, while the contact surface 2a is set to 50 mm. Further, a groove 3 having a required width is formed on the side surface of the inner frame member 2 so as to enhance the rigidity of the groove itself.

Reference numeral 4 denotes a paper core which forms an internal structure of the central portion of the door, and the peripheral end portion is directly attached and fixed to one side surface of the inner frame member 2. Further, 5 is a surface plate of the door, and 6 is an end face plate attached to the outer side surface of the outer frame member 1.

FIGS. 2 and 3 show an embodiment of the second invention, and are sectional views showing a state in which the invention is applied to a door having a double-sided frame. Reference numeral 7 in the drawing denotes a door frame portion, which is an outer frame member 1 which constitutes a vertical frame.
1 and an inner frame member 12. The inner frame member 12 is formed by a square pipe similar to that of the above-mentioned embodiment. The groove 13 provided on the side surface of the inner frame member 12 is a two-step groove having a shallow first groove 13a and a deep second groove 13b.

Reference numeral 8 denotes a central portion of the door surrounded by the door frame portion. In the door shown in FIG. 2, the front and back surfaces of the core plate 8a are decorative plates 8b, 8b.
It has a panel shape that is sandwiched by b, and a side end portion of the core plate 8a projects from the decorative plate 8b toward the door frame portion 7. Further, in the door central portion 8 in the door shown in FIG. 3, the front and rear surfaces of the paper core 14 are covered with a decorative plate 18, and a core material 19 is loaded on the end portion.

Reference numeral 20 is a frame for fixing the front and rear surfaces of the peripheral edge of the door central portion 8 to the door frame portion 7. These door central parts 8 are
In the case of the plate panel shown in FIG. 2, the protruding end of the core plate 8a is the inner frame member 1
2 into the second groove 13b, the core material 19 of FIG.
In the case of the inner frame member 12 having the outer end of the core member 19,
Into the first groove 13a. The front and rear surfaces of the inner frame member 12 are wide contact surfaces of the front and rear plates 7a of the door frame portion 7.

FIG. 4 shows an embodiment of the third invention.
The present invention is applied to a door with a single-sided frame. Inner frame 22
Is also formed in the shape of an irregular rectangular pipe by a thin metal plate material. A step is partially formed on the front surface of the inner frame member 22, and a wide contact surface 22a with which the surface plate 27a of the door frame portion 27 is contacted, and a horizontal contact surface after descending from the contact surface 22a. And a receiving surface 22b that is continuously provided. A front plate edge portion of the door central portion 28 is locked to the receiving surface 22b and is fixed by a frame 30. On the side surface of the inner frame member 22 on the receiving surface side, the paper core 2 which is an internal structure of the door central portion 28
8a is fixed.

On the rear surface of the inner frame member 22, there is provided a contact surface 22c with which the door rear plate 25 is contacted, and a similar step is formed at a position opposite to the front surface in the width direction. Therefore, the inner frame member 22 may have a front surface or a rear surface either before or after.

FIG. 5 is a sectional view showing a state in which the inner frame member 32 usable for both the double-sided frame and the single-sided frame is applied to the single-sided frame. The inner frame member 32 is provided with a step portion having the receiving surface 32b on one side, and a two-step groove 33 into which the core plate 8a or the core member 19 is fitted is formed on the other side surface. This inner frame member 32 is not only applicable to both types of doors even though it is a single one, and when it is applied to a door with a single-sided frame as shown in this figure, it is applied to the back plate 35 of the door. The contact surface of is widened to cause further torsional rigidity.

FIG. 6 shows another embodiment of the inner frame member used for a door having a double-sided frame. This frame material 42
A narrow groove 43 into which the outer end of the core plate can be fitted on one side of the cross section, and a wide groove 44 into which the outer end of the core material can be fitted on the other side of the cross section are long. It is formed along the direction. Therefore, if any of the grooves is positioned outside the door frame portion and assembled in accordance with the structure of the central portion of the door, the door is similarly rich in rigidity.

[0020]

As described above, according to the present invention, since the inner frame member is formed of the metal pipe material,
It is possible to increase the area of the door frame portion that comes into contact with the surface plate and increase the rigidity of the entire door.

Further, as in the conventional case, a wooden material is used for the outer frame member, and by combining it with the inner frame member of the square pipe member, it is possible to provide a door having an appropriate weight that is neither excessively light nor heavy.

Furthermore, by using an inner frame member made of a square pipe material at the joint between the door frame portion and the center portion of the door, it is possible to improve the assembling accuracy such as the alignment at any time.

[Brief description of drawings]

FIG. 1 is a sectional view of a main part of a door according to a first invention.

FIG. 2 is a sectional view of a main part of a door according to a second aspect of the invention.

FIG. 3 is a sectional view of a main part of a door according to another embodiment of the second invention.

FIG. 4 is a sectional view of a main part of a door according to a third aspect of the invention.

FIG. 5 is a sectional view of a main part of a door according to another embodiment of the third invention.

FIG. 6 is a sectional view of another example of the inner frame member used in the second invention.

FIG. 7 is a plan view showing a door of a conventional general flash structure partially broken away.

8 is a cross-sectional view of a main part of the door of FIG.

FIG. 9 is a sectional view of a main part of another conventional door.

[Explanation of reference numerals in the figure] 1,11 ... Outer frame member 2, 12, 22 ... ..Grooves 4,14 ........ Paper core 5 ... 8, 28 ..... Door central part 8a, 18 ..... Decorative plate 19 ..... * Core material 20, 30 ...・ ・ ・ Frame 25 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Door back plate A ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Vertical sill B ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Horizontal stile a2・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Inner frame material a1 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Outer frame material C ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Door frame part D ············ Door central part E ······ Internal structure material F ······ H ············ L-shaped reinforcement

Claims (3)

[Claims] 1. A door frame part having left and right vertical frames and upper and lower horizontal frames, and a door central part surrounded by the door frame parts, wherein the vertical frame and the horizontal frame of the door frame part are outward respectively. In a door with a flash structure that includes a frame and an inner frame, and the inner structural material of the door center is joined to the inner frame, the inner frame is made of a square pipe made of a thin metal plate. This inner frame member has a wide abutting surface against which the front and rear door plates abut, and a fixing surface on one side to which the internal structural material in the central part of the door is directly fixed. And the front and back surfaces of the central part of the door are covered by the above door surface plate without the frame. 2. A door frame part having left and right vertical frames and upper and lower horizontal frames, and a central part of the door surrounded by the door frame parts, wherein the vertical frame and the horizontal frame of the door frame part are outward respectively. In a door with a flash structure, which comprises a frame member and an inner frame member, and an inner structural member in the center part of the door is joined to the inner frame member, the door center part includes the frame on the front and back edges of the door plate panel. The inner frame member of the door frame part is fixed to the frame part, and the inner frame member is made of a square pipe made of a thin metal plate, and the front and rear plates of the door frame part are in contact with the inner frame member. A door having a wide contact surface, and at least one side of which has a core portion of the door plate panel or a groove portion into which the core plate can be fitted in the longitudinal direction. 3. A door frame part having left and right vertical frames and upper and lower horizontal frames, and a central part of the door surrounded by the door frame parts, wherein the vertical frame and the horizontal frame of the door frame part are outward respectively. A flush-structured door including a frame member and an inner frame member, and an inner structural member of the door center part joined to the inner frame member, wherein the door center part is a front frame of the peripheral edge of the main body, and the door frame part is formed by a frame. The inner frame member of the door frame is made of a square pipe made of a thin metal plate, and the inner frame member has a wide range of contact with the front plate of the door frame part. The contact surfaces each have a wide contact surface on the rear surface against which the door surface plate abuts, and the one front surface has a projecting portion having a step that enters the main body of the door and receives the inner surface of the frame. A door characterized by having a cross-sectional shape.