JP3439463B2 - Warp prevention device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warp prevention device, and more particularly to a warp prevention device for a door plate mounted between a door plate arranged in a door structure and a frame structure.

[0002]

2. Description of the Related Art Conventionally, hinges (not shown) are installed at the upper and lower corners of a door plate 1 between the door plate 1 and the frame structure 2, and between the upper and lower hinges, as shown in FIGS.
A warp prevention device 5 including a door side metal fitting 3 and a frame side metal fitting 4 is attached. The door side metal fitting 3 includes a rectangular plate-shaped mounting portion 3a and a regulation pin support portion 3b that supports a cylindrical regulation pin 3b1 at the front end of the mounting portion 3a. The fixing pin 3b1 is projected downward while the screw is fixed and the axis is oriented in the vertical direction.

On the other hand, the frame side metal fitting 4 is a rectangular plate-shaped mounting portion 4
a and a cylindrical regulating pin receiving portion 4b provided at the front end of the mounting portion 4a, the mounting portion 4a is screwed to the side surface of the door plate 1, and the lower end side of the regulating pin 3b1 is restricted to the regulating pin receiving portion 4b.
Through the through hole 4b1 and the restriction pin receiving portion 4b rotatably supports the restriction pin 3b1. Then, the axis line of the regulation pin 3b1 is maintained at a predetermined position by the regulation pin receiving portion 4b, so that when the door plate 1 is warped,
Displacement of the plate surface of the door plate 1 in the front-back direction is prevented.

[0004]

In the above-described conventional warp prevention device, since the positional relationship between the regulation pin 3b1 and the regulation pin receiving portion 4b is determined at the time of attachment, the pivot hinge having the position adjusting mechanism is provided. It could not be used when adjusting the position of the door plate 1 with respect to the frame structure 2 in the horizontal direction. The present invention has been made in view of the above problems, and an object of the present invention is to provide a warp prevention device that can be used even when a pivot hinge having a position adjusting mechanism is used in a door structure.

[0005]

In order to achieve the above object, the invention according to claim 1 provides pivot hinges capable of horizontally adjusting the position of the door plate with respect to the frame structure at the upper and lower corners of the door plate, respectively. In the arranged door structure, a warp prevention device to be mounted between the upper and lower pivot hinges, which has a columnar body attached to either the frame structure or the door plate while orienting the axis line in a substantially vertical direction. A first member, and a cylindrical member having a through hole in which an axis is vertically oriented and is larger than an outer diameter of the cylindrical member and the cylindrical member is horizontally movable in the front, rear, left and right directions. And a second member attached to either the frame structure or the door plate on the side where is not attached. That is, in the door structure in which the pivot hinges capable of adjusting the position of the door plate with respect to the frame structure in the horizontal direction are respectively arranged at the upper and lower corners of the door plate, each of the warp prevention devices including the first member and the second member is provided. Mounted between pivot hinges.

Here, when the first member is attached to the door plate while orienting the axis of the columnar body in a substantially vertical direction, the first member having a cylindrical body having a through hole larger than the outer diameter of the columnar body is provided. The two members are attached to the frame structure while inserting the columnar body into the through hole. Since the through hole is formed to be larger than the outer diameter of the columnar body, when adjusting the position of the door plate in the horizontal direction by the pivot hinge, the columnar body moves in the front, rear, left and right inside the through hole. Can be moved to. Therefore, at the time of construction, the door plate is adjusted to a desired position.

When the door plate warps and the plate surface of the door plate is displaced, the columnar body also moves in the same direction, but the movement amount of the columnar body is restricted by the wall surface of the through hole. Therefore, the door plate is prevented from being displaced in the front-rear direction by a predetermined amount or more, so that it is possible to prevent the door plate from interfering with the frame structure and becoming unrotatable. On the other hand, when the first member is attached to the frame structure while orienting the axis of the cylinder in the substantially vertical direction, the second member is attached to the door plate while inserting the cylinder into the through hole.

Then, since the through hole is formed larger than the outer diameter of the cylindrical body, when the position of the door plate is adjusted in the horizontal direction by the pivot hinge, the cylindrical body has the through hole. The cylindrical body can move forward, backward, leftward and rightward until it comes into contact with the wall surface of the. Therefore, at the time of construction, the door plate is adjusted to a desired position. Also, when the door plate is warped and the plate surface of the door plate is displaced, the tubular body also moves in the same direction, but this tubular body is moved by the wall surface of the through hole coming into contact with the columnar body. Is regulated. Therefore, the door plate is prevented from being displaced in the front-rear direction by a predetermined amount or more, so that it is possible to prevent the door plate from interfering with the frame structure and becoming unrotatable.

As an example of a specific shape of the through hole, the invention according to claim 2 is the warp prevention device according to claim 1, wherein the through hole of the cylindrical body is a plate of the door plate. It is configured to include a linear portion that can be installed substantially parallel to the surface. That is, even when the door plate is warped, if the first member is attached to the door plate, the columnar body moves in a direction substantially orthogonal to the plate surface of the door plate. Movement of the body is restricted by a linear portion that is installed substantially parallel to the plate surface of the door plate. On the other hand, if the second member is attached to the door plate, the cylinder moves in a direction substantially orthogonal to the plate surface of the door plate. The movement is restricted by the columnar body in the linear portion which is installed substantially parallel to the.

With this structure, when the first member is attached to the door plate, the pivot hinge adjusts the door plate even if the first member is moved substantially parallel to the plate surface of the door plate. When the columnar body moves due to the warp, the movement of the columnar body is regulated by the linear portion, so that the movement regulation position of the columnar body does not vary. That is, if the distance from the door plate to the cylinder can be accurately determined, the door plate is always restricted from moving beyond the distance from the cylinder to the linear portion. Similarly, even when the second member is attached to the door plate, even if the cylinder moves substantially parallel to the plate surface of the door plate during adjustment by the pivot hinge, Since the movement of the linear portion is regulated by the columnar body, the door plate is always regulated to move over the distance from the columnar body to the linear portion.

As another concrete example of the shape of the through hole,
According to a third aspect of the present invention, in the warpage prevention device according to the second aspect, the through hole of the tubular body includes a curved portion that is semicircularly extended from each end of the linear portion. It is as a configuration. That is, in the through hole of the cylindrical body, since the curved shape portion is extended from each end of the linear shape portion in a semicircular shape, as compared with the length of the linear shape portion, with respect to the plate surface of the door plate. It is possible to secure a large maximum inner diameter in a direction substantially parallel to each other. Therefore, when the first member is attached to the door plate during the adjustment by the pivot hinge, the columnar body is freely movable in a wide range in a direction substantially parallel to the plate surface of the door plate. Is possible. Similarly, when the second member is attached to the door plate, the cylindrical body can freely move in a wide range in a direction substantially parallel to the plate surface of the door plate.

When the first member is attached to the door plate, the distance from the column to the plate surface of the door plate is determined, and when the second member is attached to the door plate. By determining the distance from the wall surface of the through hole to the plate surface of the door plate, it is possible to set the allowable movement amount from the cylindrical body to the wall surface of the through hole. Therefore, an additional configuration for positioning the first member or the second member with respect to the door plate is effective.
As an example thereof, the invention according to claim 4 is the warp prevention device according to any one of claims 1 to 3, wherein the first member or the second member has the columnar body or the cylindrical body. A mounting portion for the door plate is provided so as to project from the outer wall surface, and the mounting portion is configured to include a positioning portion that presses against the plate surface of the door plate to perform positioning in the front-rear direction.

That is, when the first member is mounted on the door plate, the mounting portion protruding from the columnar body is provided with a positioning portion, and the positioning portion is provided from the side of the columnar body. It is pressed against the plate surface of the plate and positioned in the front-back direction. Therefore, the distance from the cylindrical body to the plate surface of the door plate can be determined only by attaching the first member while pressing the positioning portion against the plate surface of the door plate. On the other hand, when the second member is attached to the door plate, the mounting portion protruding from the outer wall surface of the tubular body is provided with a positioning portion, and the positioning portion is provided from the side opposite to the tubular body. The door plate is pressed against the plate surface and positioned in the front-rear direction. Therefore, the distance from the cylindrical body to the plate surface of the door plate can be determined only by mounting the first member while pressing the positioning portion against the plate surface of the door plate. Further, when the first member is attached to the same frame structure, by determining the distance from the cylindrical body to the same frame structure, and when the second member is attached to the same frame structure, the wall surface of the through hole. It is possible to accurately set the allowable movement amount from the cylindrical body to the wall surface of the through hole by determining the distance from to the frame structure.

Therefore, an additional structure for positioning the first member or the second member with respect to the frame structure is effective. As an example thereof, the invention according to claim 5 is the warp prevention device according to any one of claims 1 to 4, wherein the second member or the first member has an outer peripheral surface of the cylindrical body or the above. A mounting portion for the frame structure is provided so as to project from the cylindrical body, and the mounting portion forms a pressing surface that can be pressed against the front and rear positioning portions provided in the frame structure by bending the tip end portion into a substantially L shape. There is a configuration. That is, when the second member is attached to the frame structure,
A tip portion is bent into a substantially L shape to form a pressing surface on the mounting portion projecting from the outer wall surface of the cylindrical body, and the pressing surface has the same frame structure from the cylindrical body side. It is pressed against the provided front-back positioning portion to perform front-back positioning. Therefore, the distance from the wall surface of the through hole to the same frame structure can be determined only by attaching the second member while pressing the pressing surface against the front-back positioning portion.
On the other hand, when the first member is attached to the frame structure, the tip end portion is bent into a substantially L-shape to form a pressing surface on the mounting portion protruding from the columnar body. Is pressed against the front-rear positioning portion provided in the same frame structure from the side of the cylindrical body, and the front-rear direction is positioned. Therefore, the distance from the cylindrical body to the same frame structure can be determined only by mounting the first member while pressing the pressing surface against the front-back positioning portion.

Furthermore, it is also useful to provide an additional structure for improving the appearance of the warp prevention device. As an example thereof, in the invention according to claim 6, in the warp prevention device according to any one of claims 1 to 5, the facing portion is blinded at the position where the columnar body and the cylindrical body face each other. The cover is provided. That is, a cover is provided at a position where the cylindrical body and the cylindrical body face each other,
The cover blinds a portion where the cylindrical body and the cylindrical body face each other. For example, when there is a step at the facing portion due to a design reason, or when there is a step at the facing portion when the door plate is opened or closed, the cover covers these steps so that the appearance from the outside can be reduced. This is a useful configuration in that it can be improved. The cover here may be attachable to either the first member or the second member, or may be integrally formed with any member. .

[0016]

[0017]

[0018]

[0019]

As described above, the present invention can provide a warp prevention device that can be used even when a pivot hinge having a door plate position adjusting mechanism is used in a door structure. Further, according to the invention of claim 2, it is possible to reliably prevent the door plate from becoming unrotatable. Further, according to the invention of claim 3, the adjustment range of the door plate by the pivot hinge can be widened. Further, according to the invention of claim 4, the member can be easily attached to the door plate.

Further, according to the invention of claim 5,
The member can be easily attached to the frame structure. Further, according to the invention of claim 6, it is possible to improve the appearance of the warp prevention device.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Here, embodiments of the present invention will be described in the following order. (1) Outline of entrance door structure: (2) Configuration of warp prevention metal fittings: (3) Modification of warp prevention metal fittings:

(1) Outline of entrance door structure: FIG. 1 is a plan view showing the front appearance of an entrance door structure according to an embodiment of the present invention. Hereinafter, the front side of the page will be described as the front side, but the description will be made by appropriately changing it according to the installation situation of the entrance door structure. As shown in the figure, the entrance door structure is provided with a metal frame structure 10 having a substantially rectangular opening 10a, and a wooden door plate 20 is fitted into the opening 10a. A handle 20a is provided on the left side portion of the door plate 20.
The door upper pivot hinge 21 is disposed above and the door lower pivot hinge 22 is disposed below the right side portion of the door plate 20. Further, the frame structure 10
On the right side of the opening of the upper frame pivot hinge 11, the upper frame pivot hinge 11 is arranged at a position facing the door upper pivot hinge 21, and the lower frame pivot hinge 1 is positioned at a position facing the door lower pivot hinge 22.
2 is placed.

With this structure, when the door plate 20 is installed,
The shaft center of the lower frame pivot hinge 12 is attached to the bearing of the door lower pivot hinge 22, and the door upper pivot hinge 21 is attached.
Is attached to the bearing of the upper frame pivot hinge 11. Then, the position of the door plate 20 with respect to the frame structure 10 is adjusted to the front, rear, left and right by rotating the adjustment screw in a predetermined direction by the bearings of the pivot hinges 11 and 22, as shown in FIG. In this way, the door plate 20 has the opening 10
It is installed so as not to interfere with the edge portion of a, and by pulling the left handle 20a forward, each pivot hinge 2
It becomes possible to open it forward with the vertical axis connecting the 1 and 22 as a support axis. Particularly, as shown in FIG. 3, the frame structure 10 includes a packing 1 at a rear position at the right end of the door plate 20.
3 is arranged, the rear surface of the door plate 20 has packing 13
The rear surface position of the door plate 20 with respect to the packing 13 can be set so as not to interfere with the opening and closing of the packing 13 by
Position adjustment of the door plate 20 by the pivot hinges 11 and 22 is effective.

By the way, generally, in the case of an entrance door structure, the wooden door plate 20 may be warped due to sunlight shining from the front surface or being exposed to wind and rain. In particular, when the vicinity of the center of the door plate 20 is warped rearward, the back surface of the door plate 20 often interferes with the packing 13 to hinder the opening and closing of the door plate 20. Therefore, in the present embodiment, as shown in the figure, a warp prevention metal fitting 30 is attached between the vicinity of the center of the right end of the door plate 20 and the frame structure 10 at the facing position.

(2) Structure of Warp Prevention Metal Fitting: FIG. 4 is a cross-sectional perspective view showing the mounting portion of the warp prevention metal fitting 30. 5 is a perspective view of the door-side metal fitting 31 attached to the door plate 20, and FIG. 6 is a sectional perspective view of the frame-side metal fitting 32 attached to the frame structure 10. As shown in FIG. 4, the warp prevention metal fitting 30 includes a door-side metal fitting 31 as a first member according to the present invention and a frame-side metal fitting 32 as a second member according to the present invention. The rearward warp of the door plate 20 is restricted by the frame-side metal fitting 32, and the warp of the door plate 20 beyond the allowable range is prevented.

As shown in FIG. 5, the door-side metal fitting 31 has a columnar regulating pin support portion 31a whose axis is oriented in the vertical direction.
And a plate-shaped mounting portion 31b integrally extending from the outer peripheral surface of the regulation pin support portion 31a and having a vertical width corresponding to the height of the regulation pin support portion 31a.
The plate surface on the rear end side of b is faced to the side wall surface of the door plate 20 and is screwed to the door plate 20. The regulation pin support portion 31a is provided with a cylindrical through hole 31a1 in the axial direction, and the regulation pin 31c is provided in the through hole 31a1.
Is press-fitted. The regulation pin 31c is the regulation pin support portion 31.
It is formed longer than the height of a, and the regulation pin support portion 3
When pressed into 1a, the lower end side portion projects from the lower end of the regulation pin support portion 31a.

As shown in FIG. 7, the mounting portion 31b is provided with a positioning surface 31b1 on the surface facing the door plate 20. When the mounting portion 31b is screwed to the door plate 20, the door is closed. The front surface of the plate 20 is pressed against the positioning surface 31b1, and the position of the restriction pin 31c with respect to the door plate 20 is accurately determined. As shown in FIG. 6, the frame side metal fitting 32 is integrally provided with a cylindrical regulation pin receiving portion 32a whose axis is oriented in the vertical direction and an outer peripheral surface of the regulation pin receiving portion 32a. The frame structure 10 is provided with a plate-shaped mounting part 32b having a vertical width corresponding to the height of the receiving part 32a, and the plate surface on the rear end side of the mounting part 32b faces the opening peripheral edge of the frame structure 10. Is screwed to.

The rear end of the mounting portion 32b is, as shown in FIG. 8, a pressing surface 32 formed by being bent into a substantially L shape.
b1 is provided, and the pressing surface 32b1 comes into contact with the protruding portion 10a1 shown in FIG. 6 extending from the opening 10a to the back side of the door plate 20 when being screwed. When a rearward load is applied to the frame-side metal fitting 32, the pressing surface 32b1 is pressed against the protruding portion 10a1 from the front, and maintains the fixed position of the frame-side metal fitting 32. In this sense, the protruding portion 10a1 constitutes the front-back positioning portion according to the present invention. With this configuration, when the shaft core of the lower frame pivot hinge 12 is mounted on the bearing of the door lower pivot hinge 22 and the shaft core of the door upper pivot hinge 21 is mounted on the bearing of the upper frame pivot hinge 11, FIG.
As shown in FIG.
Into the through hole 32a1.

Then, as shown in FIG. 2, when the position of the door plate 20 with respect to the frame structure 10 is adjusted to the front, rear, left and right, as shown in FIG.
Inside the through hole 32a1 in 2a, it moves horizontally to the front, rear, left and right. As described above, when the regulation pin 31c horizontally moves back and forth and left and right inside the through hole 32a1, the regulation pin receiving portion 32a is within a range surrounded by the peripheral wall surface of the through hole 32a1, that is, each pivot. Hinge 1
The regulation pin 31c can be moved during construction while regulating within the adjustment range of 1 and 22.

When the door plate 20 warps rearward and the regulating pin 31c moves rearward, it comes into contact with the linear portion A of the through hole 32a1 at the time when the regulating pin 31c has moved by a predetermined amount. At this time, if the regulation pin 31c tries to move further rearward, the movement of the regulation pin 31c is regulated by the regulation pin receiving portion 32a as shown in FIG. Warpage is prevented. That is,
When warpage occurs, the maximum amount of rearward displacement of the door plate 20 can be set in advance based on the distance from the restriction pin 31c to the straight-line shaped portion A of the through hole 32a1. By setting the movement amount equal to or smaller than the allowable movement amount, it is possible to prevent the door plate 20 from being unable to open and close.

The straight-line portion A is formed on the rear wall surface of the through hole 32a1 because of the pivot hinges 11 and 2.
When the restriction pin 31c moves in the left-right direction during the position adjustment by the position 2, the maximum amount of rearward displacement of the restriction pin 31c is equalized, as shown in FIG. 12, no matter which position the restriction pin 31c moves rearward. This is because Also, the through hole 3
The curved shape portion B is formed on the left and right wall surfaces of 2a1.
This is because when the position of the door plate 20 is adjusted by the pivot hinges 11 and 22, as shown in FIG. 13, a wide area in which the restriction pin 31c can freely move is secured. That is, by forming the left and right wall surfaces of the through hole 32a1 in an arc shape, it is useful in that the left and right walls can be moved in a wider range than the left and right width of the linear portion A. further,
Like the rear wall surface, the front wall surface of the through hole 32a1 is also formed with the straight-shaped portion A '. The door plate 20 may warp forward and the right end of the door plate 20 may be displaced forward. To get it. Also in this case, like the straight-line portion A, the restriction pin 3 does not depend on the position in the left-right direction.
The amount of forward movement of 1c becomes even. Therefore, the door plate 2
When 0 warps forward, it is possible to prevent the frame structure 10 and the door plate 20 from interfering with each other and opening and closing by restricting the amount of forward displacement of the right end of the door plate 20. Become.

In the present embodiment, the restriction pin 31c is inserted into the through hole 32a1 of the restriction pin receiving portion 32a from above to close the upper opening of the through hole 32a1 and prevent accumulation of dust or the like. Since such a configuration is only an example, the regulation pin 31c can be configured to be inserted into the through hole 32a1 from below. In that case, a cover for closing the upper opening of the regulation pin receiving portion 32a may be attached, or the regulation pin 31c may be attached.
To reach the upper opening of the through hole 32a1,
A device such as adjusting the length of the regulation pin 31c is also effective. In the above description, a single-opening type entrance door structure is adopted, but since the present invention does not limit the type of door structure, it is applicable not only to the entrance door but to all doors, and the parent-child type Similarly, the invention can be applied to a double-opening type entrance door structure. When a plurality of door plates are installed, a plurality of warp prevention metal fittings 30 can be provided as necessary.
Can be attached. Also, warp prevention metal fittings 3
0 is applicable not only to a wooden door plate, but also to a case where a metal door plate such as aluminum is used for an entrance door structure from the viewpoint of a device for preventing the warp of the door plate.

(3) Modification of Warp Prevention Metal Fitting: The restriction pin receiving portion 32a according to this embodiment has a through hole 32a1 having a shape as shown in FIG. 10, but this is only an example of the structure. Since it does not exist, it is possible to change the shape of the through hole 32a1. For example, the through hole 32a1 may be formed as shown in FIG.
It is also possible to have a shape as shown in. As shown in the figure, a pair of straight line-shaped portions C, C formed in the front-rear direction.
Each of the left ends in is connected by a semicircular curved shape portion D, and each of the right ends is connected by a semicircular curved shape portion E.
Then, with respect to the length of the straight-shaped portions C, C, the through hole 32a
Since the width of 1 in the left-right direction is relatively wide, the degree of freedom in setting the position of the regulation pin 31c can be further increased when the position of the door plate 20 is adjusted by the pivot hinges 11 and 22.

Further, as shown in FIG. 15, the door side metal fitting 3
It is also possible to improve the external appearance of the warp prevention metal fitting 30 by attaching the cover 40 that covers the opposing portion of 1 and the frame-side metal fitting 32. For example, as shown in FIG.
When the outer shape of the regulation pin support portion 31a and the outer shape of the regulation pin receiving portion 32a are different from each other and a step is formed at a portion where the door-side metal fitting 31 and the frame-side metal fitting 32 face each other, the cover 40 is attached so as to cover the step. In FIG. 15, the cover 40 is screwed to the door-side metal fitting 31, but such a configuration is only an example, and it is sufficient if the facing portion between the door-side metal fitting 31 and the frame-side metal fitting 32 can be covered. Therefore, the cover 40 can be screwed to the frame-side metal fitting 32, or can be integrally formed with either the door-side metal fitting 31 or the frame-side metal fitting 32.

Further, as shown in FIG. 16, the regulation pin receiving portion 32a can be formed in a shape other than the cylindrical shape. The regulation pin receiving portion 50 shown in the figure is provided with a linear portion F at the rear portion where the mounting portion 51 is extended, and both ends of the linear portion F are bent forward to project the protrusion according to the present invention. The guide portions F1 and F1 as the portions are formed. Then, when the position of the door plate 20 is adjusted by the pivot hinges 11 and 22, the position of the restriction pin 31c can be adjusted. Further, at this time, if the restriction pin 31c is set between the guide portions F1 and F1, when the restriction pin 31c moves rearward due to the warp of the door plate 20,
Similar to the linear portion A of the present embodiment, the linear portion F can regulate the rearward movement of the regulation pin 31c.

Further, as shown in FIG. 17, contrary to the present embodiment, it is also possible to provide the restriction pin receiving portion 61 on the door plate metal fitting 60 and the restriction pin support portion 71 on the frame side metal fitting 70. . Then, when the position of the door plate 20 is adjusted by the pivot hinges 11 and 22, the restriction pin receiving portion 61 is used.
The wall surface of the through hole 61a provided in the
The desired adjustment can be made to the front, rear, left and right within a range until it comes into contact with the restriction pin 71a press-fitted into. When the door plate 20 is warped, the restriction pin receiving portion 61 moves rearward as the door plate 20 is displaced rearward, but the restriction pin 71a abuts on the front wall surface of the through hole 61a. The rearward movement of the regulation pin receiving portion 61 is regulated.

At this time, the door-side metal fitting 60 is provided with a positioning surface 62 formed by bending the rear end into a substantially L-shape, and the positioning surface 62 is brought into contact with the rear surface of the door plate 20 from the rear side, and the door plate. It is attached to 20. With this configuration, when the door plate 20 is warped and the front wall surface of the through hole 61a is pressed forward by the restriction pin 71a, the positioning surface 62 of the door side metal fitting 60 is pressed backward by the rear surface of the door plate 20. And positioned, the front wall surface and the door plate 20
The distance between and is kept constant. In the case shown in the same figure, if the restriction pin 71a is arranged on the extension line of the rotation shaft of the pivot hinges 11 and 22, when the door plate 20 is opened and closed, the door side metal fitting 60 uses the restriction pin 71a as a support shaft. Since it rotates in the locus as shown in FIG. 18, the movement of the regulation pin receiving portion 61 toward the door plate 20 side is regulated by the regulation pin 71a even during the opening / closing operation of the door plate 20.
This is useful in that it can prevent the warp of the.

As described above, in this embodiment, when the position of the door plate 20 is adjusted by the pivot hinges 11 and 22, the restriction pin 31c can move forward, backward, leftward and rightward within the range surrounded by the peripheral wall surface of the through hole 32a1. Become. In addition, even when the door plate 20 is warped, the regulation pin 31c does not move through the through hole 32.
The linear portion A of a1 restricts the backward movement of a predetermined amount or more. Therefore, the warp of the door plate 20 beyond the allowable range can be prevented, and the door plate 20 can be prevented from being unable to open and close.

[Brief description of drawings]

FIG. 1 is a plan view showing a front appearance of a front door structure according to the present embodiment.

FIG. 2 is a diagram showing a position change of a door plate when adjustment is performed by a pivot hinge.

FIG. 3 is a cross-sectional view showing a configuration at a right end portion of the door plate shown in FIG.

FIG. 4 is a sectional perspective view showing a mounting portion of a warp prevention metal fitting.

FIG. 5 is a perspective view showing an appearance of a door-side metal fitting.

FIG. 6 is a cross-sectional perspective view showing the outer appearance of the frame-side metal fitting.

FIG. 7 is a plan view showing a configuration of a door-side metal fitting.

FIG. 8 is a plan view showing a configuration of a frame-side metal fitting.

FIG. 9 is a plan view showing how the warp prevention metal fitting is attached.

FIG. 10 is a cross-sectional view showing a positional relationship between a regulation pin and a regulation pin receiving portion.

FIG. 11 is a cross-sectional view showing a situation in which the restriction pin moves rearward due to the warp of the door plate.

FIG. 12 is a plan view for explaining a linear portion.

FIG. 13 is a plan view for explaining a curved portion.

FIG. 14 is a plan view showing a regulation pin receiving portion having through holes of different shapes.

FIG. 15 is a side view showing a situation when a cover is attached to the warp prevention metal fitting.

FIG. 16 is a plan view showing a regulation pin receiving portion having a different shape.

FIG. 17 is a cross-sectional view showing a configuration in the case where a restriction pin receiving portion is provided on the door side metal fitting side.

FIG. 18 is a plan view showing the locus of the door-side metal fitting when the door plate is opened and closed.

FIG. 19 is a cross-sectional view showing a structure of a warp prevention metal fitting according to a conventional example.

FIG. 20 is a side view showing a configuration of a warp prevention metal fitting according to a conventional example.

[Explanation of symbols]

10 ... Frame structure 10a ... opening 10a1 ... protruding portion 11 ... Upper frame pivot hinge 12 ... Lower frame pivot hinge 13 ... Packing 20 ... Door plate 20a ... handle 21 ... Door upper pivot hinge 22 ... Door lower pivot hinge 30 ... Warp prevention metal fittings 31 ... Door side metal fittings 31a ... Regulating pin support portion 31a1 ... through hole 31b ... Mounting part 31b1 ... Positioning surface 31c ... Regulating pin 32 ... Frame side bracket 32a ... Regulating pin receiving portion 32a1 ... through hole 32b ... Mounting part 32b1 ... Pressing surface 40 ... Cover 50 ... Control pin receiving part 51 ... Mounting part A, C, F ... Linear shape part B, D, E ... Curved section F1 ... Guide section

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E06B 3/68-3/88

Claims (6)

(57) [Claims] 1. A warp prevention device which is attached between upper and lower pivot hinges in a door structure in which pivot hinges capable of horizontally adjusting a position of the door plate with respect to a frame structure are arranged at upper and lower corners of the door plate, respectively. A first member having a columnar body attached to either the frame structure or the door plate while orienting the axis in a substantially vertical direction, and the axis being oriented vertically and having an outer diameter larger than that of the columnar body. And a cylindrical body having a through hole into which the columnar body is horizontally movably inserted in the front-rear and left-right directions, and which is attached to either the frame structure or the door plate on the side where the first member is not attached. A warp prevention device comprising two members. 2. The warp prevention device according to claim 1, wherein the through hole of the cylindrical body includes a linear portion that can be installed substantially parallel to a plate surface of the door plate. 3. The warpage prevention device according to claim 2, wherein the through hole of the tubular body includes a curved shape portion extending in a semicircular shape from each end of the linear shape portion. 4. The first member or the second member is provided with a mounting portion projecting from the outer wall surface of the cylindrical body or the cylindrical body to the door plate, and the mounting portion is provided on the plate surface of the door plate. The warp prevention device according to any one of claims 1 to 3, further comprising: a positioning portion that presses and positions in the front-rear direction. 5. The second member or the first member is provided with a mounting portion projecting from the outer peripheral surface of the cylindrical body or the cylindrical body to the frame structure, and the mounting portion has a substantially L-shaped tip portion. The warp prevention device according to any one of claims 1 to 4, wherein the warp prevention device is formed by forming a pressing surface that can be pressed against front and rear positioning portions provided in the same frame structure. 6. The warp prevention device according to claim 1, wherein a cover for blinding the facing portion is provided at a position where the cylindrical body and the cylindrical body face each other.