JP7780935B2 - Door and window equipment - Google Patents

Description

The present invention relates to a fitting device that rotates doors, windows, shoji screens, etc. to open and close them.

Conventional inventions of this type, for example as described in Patent Document 1, include a connecting rod that is hung horizontally between a door and a door frame, a first shaft that passes vertically through the connecting rod on the door frame side, a second shaft that passes vertically through the connecting rod on the door side and is parallel to the first shaft, two pairs of block-shaped bearing bodies that rotatably support the top and bottom of the first shaft and the second shaft on the door frame and the door, respectively, and fastening members that pass vertically through the bearing bodies to screw the bearing bodies to each adjacent mounting surface when the door and the door frame are closed.
According to this conventional technology, after the door is rotated around the first axis to be almost fully closed, the door can be moved parallel to the door thickness direction by rotating around the first and second axes, pushing the door into the door frame and pressing it firmly against the packing, thereby improving the soundproofing performance, waterproofing performance, and other sealing performance when the door is closed.

JP 2015-25274 A JP 2018-59369 A

However, in the above-mentioned conventional technology, the door is made rotatable and movable in the thickness direction by two parallel shafts (first and second shafts). As a result, there is a risk that the door may wobble in the thickness direction due to rotation around the two shafts while it is rotating or when it is closed.

In view of the above problems, the present invention has the following configuration.
a biaxial hinge provided between the door frame and the frame member, the biaxial hinge supporting the door frame so that it can rotate to open and close and move in the thickness direction of the door frame, the biaxial hinge having a link member with an axial distance between a first rotation center at one end and a second rotation center at the other end, the link member being provided in plurality along the first rotation center, the link member being rotatably supported by the frame member with the first rotation center as a fulcrum, and rotatably supporting the door frame so that it can rotate around the second rotation center as a fulcrum, the biaxial hinge being provided in plurality, the first rotation centers of the plurality of biaxial hinges being located on the same axis, and the axial distance of some of the plurality of biaxial hinges being different from that of the other biaxial hinges.
Another aspect of the present invention has the following configuration.
A fitting device comprising: a fitting; a frame member adjacent to the door end of the fitting; and a biaxial hinge provided between the fitting and the frame member to support the fitting so that it can be rotated open and closed and move in the thickness direction of the fitting; wherein the biaxial hinge has a link member with an axial distance between a first rotation center on one end side and a second rotation center on the other end side, and a plurality of the link members are provided along the first rotation center, and the link member is rotatably supported on the frame member with the first rotation center as a fulcrum, and rotatably supports the fitting with the second rotation center as a fulcrum; a fitting device characterized in that a plurality of the biaxial hinges are provided, and among these plurality of biaxial hinges, some of the biaxial hinges have a different axial distance from the other biaxial hinges, so that after the fitting rotates in the closing direction, it moves in the projection direction to come into approximately close contact with the frame member.

The present invention is configured as described above, which prevents wobbling of building materials during opening and closing operations.

1 is a front view of an example of a fitting device according to the present invention as viewed from the outdoor side. FIG. 2 is a cross-sectional view taken along line (II)-(II) in FIG. FIG. 2 is a cross-sectional view taken along line (III)-(III) in FIG. FIG. 2 is an exploded perspective view showing a biaxial hinge portion of the same fitting device. FIG. 2 is a front view of a biaxial hinge used in the fitting device, showing the hinge in a separated state. FIG. 10 is a front view of another biaxial hinge used in the same fitting device, showing the state in which the hinge is separated. (a1) to (a3) are simplified cross-sectional views of a biaxial hinge portion of the same fitting device. (a1) shows the fitting in the middle of closing, (a2) shows the fitting fully closed, and (a3) shows the fitting pushed in, in that order. (b1) to (b3) are simplified cross-sectional views of other biaxial hinge portions of the same fitting device. (b1), (b2), and (b3) show the states corresponding to (a1), (a2), and (a3), respectively.

This embodiment discloses the following features.
The first feature is that the door frame includes a fitting, a frame member adjacent to the door edge of the fitting, and a biaxial hinge that is provided between the fitting and the frame member and supports the fitting so that it can be rotated open and closed and can move in the thickness direction of the fitting, the biaxial hinge having a link member with an axial distance between a first rotation center on one end side and a second rotation center on the other end side, and a plurality of the link members are provided along the first rotation center, the link member is rotatably supported by the frame member with the first rotation center as a fulcrum, and rotatably supports the fitting with the second rotation center as a fulcrum, and a plurality of the biaxial hinges are provided, and among the plurality of biaxial hinges, some of the biaxial hinges have a different axial distance from the other biaxial hinges (see FIGS. 1 to 7).

A second feature is that the inter-axis distance of some of the biaxial hinges is larger than that of the other biaxial hinges (see Figures 1 to 3 and 5 to 7).

The third feature is that the number of the aforementioned biaxial hinges is different from the number of the aforementioned other biaxial hinges (see Figure 1).

A fourth feature is that three or more biaxial hinges are provided, and of these three or more biaxial hinges, the biaxial hinge located in the center is one of the biaxial hinges (see Figure 1).

A fifth feature is that the link member is detachable from the frame member (see Figures 5 and 6).

A sixth feature is that the link member is detachable from the fixture (see Figures 5 and 6).

A seventh feature is the inclusion of a first uniaxial hinge with the first center of rotation located closer to the frame member, and a second uniaxial hinge with the second center of rotation located closer to the door edge than the first uniaxial hinge (see Figures 2 to 7).

An eighth feature is that one or both of the first uniaxial hinge and the second uniaxial hinge are composed of a support member fixed to the link member and a pivot member rotatably and detachably supported on the support member (see Figures 4 to 6).

A ninth feature is that the door fixture rotates in the closing direction and then moves in the projection direction to come into close contact with the frame member (see Figures 7(a3) and (b3)).

<Specific embodiment>
Next, specific embodiments having the above-mentioned features will be described in detail with reference to the drawings.
In the following description, the door tip direction or door tip side means the centrifugal direction side of the door fixture 20 that rotates to open and close, and the door tail direction or door tail side means the opposite direction to the door tip direction.
Also, the door/window thickness direction means the direction of the thickness of the door/window 20.

In the following description, the outdoor side refers to one side in the thickness direction of the fitting 20 in the fully closed state. According to the illustrated example, the outdoor space is the space located on the opening side of the fitting 20 in the fully closed state.
In contrast, the indoor side is the other side in the thickness direction of the fitting 20 in a fully closed state. According to the illustrated example, the indoor space is a space located on the opposite side to the outdoor side.
Contrary to the illustrated example, it is also possible to designate one side of the fitting 20 in the thickness direction as the indoor side and the other side as the outdoor side.

In the following description, the inside of the width direction of the fixture means the inside of the horizontal width direction of the fixture 20. For example, when the door edge of the fixture 20 is used as the reference, the inside of the width direction of the fixture is the door tail side, and when the door tail side of the fixture 20 is used as the reference, the inside of the width direction of the fixture is the door edge side.
Further, the outer side in the width direction of the fixture means the opposite side to the inner side in the width direction of the fixture.

In the following description, the inside in the thickness direction of the fitting means the inside in the thickness direction of the fitting 20. For example, when the face of the fitting 20 on the opening side is used as a reference, the inside in the thickness direction of the fitting is the side on the closing side of the fitting 20, and when the face of the fitting 20 on the closing side is used as a reference, the inside in the thickness direction of the fitting is the side on the opening side of the fitting 20.
In addition, the outer side of the thickness direction of the fixture means the opposite side of the inner side of the thickness direction of the fixture.

In the following description, the "prospect direction" refers to the thickness direction (depth direction) of the frame member. The "observation direction" refers to the width direction (left-right direction) of the frame member, which is a direction approximately perpendicular to the prospect direction.

The fitting device 1 shown in Figure 1 comprises a frame body 10 made up of multiple frame members in a rectangular frame shape, a fitting 20 that opens and closes an opening within this frame body, and multiple biaxial hinges A and B that support the fitting 20 so that it can be rotated open and closed and move in the thickness direction of the fitting. After the fitting 20 is almost fully closed, it is pushed toward the indoor side to achieve watertight performance.

The frame body 10 is configured as a single rectangular frame with an opening in the center, and includes a trailing-side frame member 11 that faces and is adjacent to the trailing edge of the door fixture 20 when it is closed, a leading-side frame member 12 that faces and is adjacent to the leading edge of the door fixture 20, and an upper frame member 13 and a lower frame member 14 that face and are adjacent to the upper and lower ends of the door fixture 20, respectively. This frame body 10 is fixedly secured to an opening in the framework of a building or the like. Each of the frame members 11, 12, 13, and 14 is made of a metal material.

The trailing edge frame member 11 is a vertically continuous, elongated member. A vertically continuous groove 11a is provided in the portion of the trailing edge frame member 11 that is located on the inside of the frame and closer to the interior side than the fitting 20. The groove 11a has an opening facing the exterior.
An elastic member 40 is attached to this groove 11a so as to be pressed against the indoor side of the fitting 20 in the fully closed state (see Figures 2, 3 and 7).

The leading edge frame member 12 is formed symmetrically to the trailing edge frame member 11. Although not shown, an elastic member 40 is attached to this leading edge frame member 12 so that it presses against the interior side of the door fitting 20 when it is fully closed.

The upper frame member 13 and the lower frame member 14 are each continuous in the left-right direction. Although not shown, elastic members 40 are attached to these upper frame member 13 and lower frame member 14 so that they are pressed against the interior side of the door frame 20 when fully closed.

The elastic member 40 is attached to the frame body 10 so as to face the surface of the fitting 20 on the closing direction side.
The elastic member 40 is a single or multiple long members made of rubber, elastomer resin, elastic foam resin, or the like, and is configured in the shape of a rectangular frame surrounding the opening in the frame body 10 .
When the fitting 20 is in the closed state, it comes into contact with the elastic member 40, thereby separating the indoor space from the outdoor space in a substantially sealed manner.

In this embodiment, a single row of elastic members 40 is provided for the trailing edge frame member 11, the leading edge frame member 12, the upper frame member 13, or the lower frame member 14, but as another example, multiple rows of elastic members 40 may be provided.
More specifically, the trailing edge frame member 11 may be provided with another elastic member that abuts against the fully closed fitting 20 on the inside or outside of the elastic member 40 in the width direction of the fitting. This configuration can be applied to, for example, the structure disclosed in Figure 2 of Patent Document 1.

The fitting 20 is a door body having a rectangular plate shape when viewed from the front. The interior of the fitting 20 is hollow or has a core material.
This fitting 20 comprises a front panel 21 and a back panel 22 (see Figures 2 and 3) spaced apart in the thickness direction, a plurality of frames (not shown) that support and reinforce these from the inside, and pushing devices 30, 30 (see Figure 1) for pushing the fitting 20 in the closed position in the closing direction (towards the interior in the illustrated example).

The front panel 21 and the back panel 22 are made by processing metal plates appropriately to form a rectangular shape when viewed from the front, with the left and right edges and the top and bottom edges bent inward in the thickness direction of the door and window. The front panel 21 and the back panel 22 are prevented from bending by multiple frames (not shown) contained within them.
The front plate 21 and the back plate 22 can be made up of a single plate material or three or more plate materials.

Multiple pushing devices 30 (two in the illustrated example) are provided corresponding to the left and right portions of the fitting 20.
Each pushing device 30 rotates the lever 31 to protrude an engaging member (not shown) toward the frame body 10, inserts this engaging member into an engaged portion (not shown) provided on the frame body 10, and slides it against the cam slope (not shown) of this engaged portion, thereby moving the fitting 20 approximately parallel to the interior side and pressing it against the elastic member 40.
It should be noted that the pushing device 30 may have the structure disclosed in, for example, Japanese Patent Application Laid-Open No. 2003-222999.

1, reference numeral 61 denotes an opening/closing knob for opening and closing the fitting 20, and by rotating this opening/closing knob 61, a latch (not shown) appears and disappears on the door edge surface of the fitting 20. The door edge side frame member 12 is provided with a latch receiver (not shown) that fits into the latch.
1, reference numeral 62 denotes a locking mechanism. This locking mechanism extends and retracts a deadbolt (not shown) by operating a thumb turn or key on the door fixture 20, and then engages and disengages the deadbolt with a recessed seat (not shown) in the door-end frame member 12.

A plurality of biaxial hinges A and B are provided along the first rotation center c1 and spaced apart in the vertical direction between the fitting 20 and the frame body 10. In the illustrated example, the number of biaxial hinges B is greater than the number of biaxial hinges A.
Of these multiple biaxial hinges A and B, some biaxial hinges A have a different axis distance from the other biaxial hinges B.

In particular, according to the example shown in Figure 1, a total of three biaxial hinges are provided, and of these three biaxial hinges, biaxial hinge A, which is located toward the center in the vertical direction, has a larger (longer) interaxial distance than biaxial hinges B, B, which are located on both the top and bottom sides of biaxial hinge A.

The biaxial hinge A is composed of a link member 51 with an inter-axial distance between a first center of rotation c1 at one end and a second center of rotation c2 at the other end, a first uniaxial hinge 52 with its first center of rotation c1 located closer to the trailing edge frame member 11, and a second uniaxial hinge 53 with its second center of rotation c2 located closer to the leading edge of the door than the first uniaxial hinge 52 (see Figures 2 and 4). Each of the components that make up this biaxial hinge A is made of a hard material such as a corrosion-resistant metal (e.g., stainless steel).

In the illustrated example, the link member 51 is a rectangular flat plate-shaped member.
This link member 51 has a first uniaxial hinge 52 attached closer to the trailing edge frame member 11, making the axial center of the first uniaxial hinge 52 the first rotation center c1, and a second uniaxial hinge 53 attached closer to the leading edge of the door than the first uniaxial hinge 52, making the axial center of the second uniaxial hinge 53 the second rotation center c2.

A rectangular flat cover plate 54 is fastened to the link member 51 by fasteners 35 so as to cover substantially the entire surface of the link member 51 .
This cover plate 54 is intended to cover and conceal holes for fastening the first uniaxial hinge 52, the second uniaxial hinge 53, etc., and can be omitted.

The first uniaxial hinge 52 has a pivot member 52b rotatably and detachably supported on a support member 52a. A typical flag hinge can be used for this first uniaxial hinge 52.

According to the illustrated example, the support member 52a is formed in a substantially rectangular flat plate shape and has a cylindrical bearing portion 52a1 at one end side in the width direction thereof.
The support member 52a has its bearing portion 52a1 facing up and down near the door edge, and its flat portion is fixed to the back surface (the surface facing the fixture 20) of the link member 51. In the illustrated example, this fixing means is fastening using fasteners 35 (for example, screws, bolts, rivets, etc.), but other fixing means such as welding can also be used.
The center of the bearing portion 52a1 functions as a first rotation center c1 when the link member 51 rotates in accordance with the opening and closing operation of the fitting 20 (see FIG. 7).

The rotating member 52b is a member that is arranged vertically (or downwardly in the illustrated example) alongside the support member 52a on the first rotation center c1, and is formed in a generally rectangular flat plate shape. A generally cylindrical shaft portion 52b1 is provided at one end of the rotating member 52b in the width direction so as to protrude toward the support member 52a (see Figures 4 and 5).

The shaft portion 52b1 fits into the bearing portion 52a1 of the support member 52a, thereby rotatably supporting the support member 52a. This shaft portion 52b1 can be inserted into or removed from the bearing portion 52a1 in the axial direction.

The pivoting member 52b configured as described above is fastened to the trailing edge frame member 11 by the fastener 35 with the shaft 52b1 positioned on the front side (see Figure 4).

The second uniaxial hinge 53, similar to the first uniaxial hinge 52, rotatably and detachably supports a rotating member 53b relative to a support member 53a.

The support member 53a has the same configuration as the rotating member 52b of the first uniaxial hinge 52, and has a generally cylindrical shaft portion 53a1 at one end in the width direction that protrudes in one direction in the vertical direction (see FIG. 4).
This support member 53a is fixed to the back side of the link member 51 via a spacer 55, with the shaft portion 53a1 facing upward near the door edge. The center of the shaft portion 53a1 functions as a second rotation center c2 when the base plate 57 rotates relative to the link member 51 as the fitting 20 is pushed in (see Figures 7(a3) and (b3)).
In the illustrated example, the means for fixing the support member 53a to the link member 51 is the fastening using the fastener 35, but other fixing means such as welding may also be used.

The spacer 55 is a rectangular, flat member that is sandwiched between the support member 53a and the link member 51. In an example other than the example shown in the figure, the spacer 55 can be formed integrally with the support member 53a or the link member 51.

The rotating member 53b is a member having the same configuration as the support member 52a of the first uniaxial hinge 52, and has a cylindrical bearing portion 53b1 at one end side in the width direction.
The flat portion of the rotating member 53b is fixed to the base plate 57 via a spacer 56, with the bearing portion 53b1 facing up and down near the door edge (see FIG. 4). In the illustrated example, this fixing means is a fastener 35 (e.g., a screw, a bolt, a rivet, etc.), but other fixing means such as welding can also be used.

The spacer 56 is a rectangular, flat member that is sandwiched between the rotating member 53b and the substrate 57. In an example other than the example shown, the spacer 56 can be formed integrally with the rotating member 53b or the substrate 57.

The base plate 57 is a rectangular, flat member with appropriate rigidity and thickness, and is fixed to the front panel 21 of the fitting 20 using fasteners 35.

In the illustrated example, the fastener 35 inserted into the base plate 57 passes through the front plate 21 and is screwed into and fastened to the reinforcing plate 58 on the back side of the front plate 21 .
In addition, as an example other than the illustrated example, it is also possible to omit the reinforcing plate 58 and have the base plate 57 directly screwed to the front plate 21, or to have the base plate 57 welded to the front plate 21, etc.

With the biaxial hinge A configured as described above, the link member 51 is rotatably supported on the trailing edge frame member 11 with the first rotation center c1 as the fulcrum, and rotatably supports the base plate 57 and fitting 20 with the second rotation center c2 as the fulcrum.

The biaxial hinge B is the same as the biaxial hinge A having the above-described structure, except that the distance between the first center of rotation c1 and the second center of rotation c2 is shorter.
More specifically, the biaxial hinge B shown in the figure is configured by replacing the link member 51, cover plate 54, and base plate 57 of the biaxial hinge A with a link member 51', cover plate 54', and reinforcing plate 58', respectively.
The link member 51', the cover plate 54', and the reinforcing plate 58' have different width dimensions from the link member 51, the cover plate 54, and the base plate 57, respectively.

That is, the axis distance w1 of the biaxial hinge A and the axis distance w2 of the biaxial hinge B are different.
The ratio (W1/W2) of the axis distance w1 of biaxial hinge A to the axis distance w2 of biaxial hinge B is set appropriately depending on the size of the fitting 20, and is set, for example, within the range of 1.1 to 5.0. In the fitting device 1 shown in the figure, w1:w2 is approximately 2:1.

Multiple biaxial hinges A and B of the above configuration are arranged at intervals in the vertical direction. In the example shown in Figure 1, biaxial hinges B are arranged near the top and bottom ends of the fitting 20, and biaxial hinge A is arranged between them.

Next, the work of hanging the fixture 20 onto the frame 10 will be described.
In this operation, before the fitting 20 is hung, the pivoting member 52b of the first uniaxial hinge 52 that constitutes the biaxial hinge A and the pivoting member 52b of the first uniaxial hinge 52 that constitutes the biaxial hinge B are fixed to the door end side frame member 11, respectively.
Then, the pivoting member 53b of the second uniaxial hinge 53 that constitutes the biaxial hinge A is fixed to the building fixture 20 via a spacer 56 and a substrate 57, etc., and similarly, the pivoting member 53b of the second uniaxial hinge 53 that constitutes the biaxial hinge B is fixed to the building fixture 20 via a spacer 56 and a substrate 57', etc.

Furthermore, a support member 52a of a first uniaxial hinge 52 and a support member 53a of a second uniaxial hinge 53 are fixed to the link member 51 of the biaxial hinge A (see FIG. 5).
The link member 51, the support member 52a, the support member 53a, the spacer 55, the cover plate 54, etc. can be integrally assembled in advance and handled as a single component.

Similarly, the support member 52a of the first uniaxial hinge 52 and the support member 53a of the second uniaxial hinge 53 are fixed to the link member 51' that constitutes the biaxial hinge B (see FIG. 6).
The link member 51', the support member 52a, the support member 53a, the spacer 55, the cover plate 54', etc. can be integrally assembled in advance and handled as one component.

Next, in the biaxial hinge A, the support member 52a integral with the link member 51 is assembled to the rotating member 52b on the trailing edge side frame member 11 side (see FIG. 5).
Furthermore, a rotating member 53b integral with the fixture 20 is attached to a support member 53a integral with the link member 51.

Similarly, in the biaxial hinge B portion, the first uniaxial hinge 52 integral with the link member 51' is assembled to the rotary member 52b on the trailing edge side frame member 11 side (see FIG. 6).
Furthermore, a rotating member 53b integral with the fixture 20 is attached to a support member 53a integral with the link member 51'.

By these hanging operations, as shown in Figures 2, 3 and 7, the fitting 20 is connected to the trailing edge frame member 11 so as to be able to rotate to open and close and to move in the thickness direction of the fitting.
In this connected state, each link member 51 , 51 ′ can be attached to and detached from both the trailing edge frame member 11 and the fitting 20 by the separable first uniaxial hinge 52 and second uniaxial hinge 53 .

Next, the function and effect of the fitting device 1 configured as described above when closing the fitting 20 and pushing it into the frame 10 will be described in detail.
First, when the open door 20 is closed, the door 20 rotates in the closing direction around the first center of rotation c1 at the biaxial hinge A (see Figure 7(a1)), and at the same time, the door 20 also rotates in the closing direction around the first center of rotation c1 at the biaxial hinge B (see Figure 7(b1)).
Then, the fitting 20 in the fully closed state has its peripheral edge loosely pressed against the elastic member 40 (see Figures 7(a2) and (b2)).

In normal use, the fitting 20 rotates open and closed between the fully closed state and the open state described above. During this opening and closing rotation (FIGS. 7(a1) and 7(b1)), due to the unevenness of the inter-axis distances w1 and w2 of the biaxial hinges A and B, the resistance to rotation about the second rotation center c2 of the biaxial hinge A and the second rotation center c2 of the biaxial hinge B, which are not located on the same axis, is greater than the resistance to rotation about the first rotation center c1 of the two types of biaxial hinges A and B, which are located on the same axis.
In other words, since the second center of rotation c2 of biaxial hinge A and the second center of rotation c2 of biaxial hinge B are not positioned on the same axis, the second uniaxial hinge 53 of biaxial hinge A and the second uniaxial hinge 53 of biaxial hinge B mutually restrict rotation.
Therefore, when the door fixture 20 is rotated to open or close, only rotation occurs around the first rotation center c1 of the two-axis hinges A and B, and the door fixture 20 is prevented from wobbling in the door thickness direction due to rotation around the two second rotation centers c2 and c2.

When water needs to be stopped due to a flood or other reason, the pushing device 30 is operated in the fully closed state, and the fitting 20 moves toward the interior along the projection direction, with the peripheral edge of the fitting 20 being strongly pressed against the elastic member 40 that is integral with the frame 10 (see Figures 7(a3) and (b3)). As a result, the gap between the fitting 20 and the frame 10 is substantially sealed, providing a watertight effect.

During this type of watertight operation, the link member 51 of biaxial hinge A and the link member 51' of biaxial hinge B each rotate toward the indoor side around the first center of rotation c1, while the fitting 20 rotates toward the outdoor side around the second center of rotation c2. These two types of rotation cause the fitting 20 to move approximately parallel toward the indoor side. The rotation angle α1 of the link member 51 around the first center of rotation c1 associated with this movement is smaller than the rotation angle α2 of the link member 51' around the first center of rotation c1 (see Figures 7(a3) and (b3)).

Therefore, according to the fitting device 1 having the above-described configuration, under normal circumstances, wobbling of the fitting 20 in the thickness direction is suppressed, and the fitting 20 can be smoothly rotated open and closed with the first rotation center c1 as the fulcrum.
In addition, in the event of a flood, the closed fitting 20 can be moved parallel to the projection direction to press firmly against the elastic member 40, thereby providing excellent water-stopping performance.
Furthermore, by separating the first uniaxial hinge 52 or the second uniaxial hinge 53, the fitting 20 can be easily attached and detached to the frame body 10, which provides excellent ease of installation and maintenance.

<Modification>
According to the above embodiment, two biaxial hinges B are provided one above the other, and one biaxial hinge A is provided between them. However, as other examples, various combinations are possible, such as a mode in which two biaxial hinges A are provided one above the other and one biaxial hinge B is provided between them, a mode in which two or more biaxial hinges A are provided, a mode in which three or more biaxial hinges B are provided, a mode in which the same number of biaxial hinges A and biaxial hinges B (for example, one of each) are provided, and a mode in which the number of biaxial hinges A is greater than the number of biaxial hinges B.

In addition, in the above embodiment, the axis distance w1 of biaxial hinge A is greater than the axis distance w2 of biaxial hinge B, but as another example, it is also possible to conversely make the axis distance w1 of biaxial hinge A smaller than the axis distance w2 of biaxial hinge B.

In addition, in the above embodiment, as a preferred example, the fitting 20 is configured to be approximately flush with the surface of the frame body 10 when in the fully closed position (see Figures 7(a2)(b2)) before reaching the water-stopping position (see Figures 7(a3)(b3)). However, as another example, it is also possible to configure the fitting 20, which protrudes slightly outside beyond the surface of the frame body 10 in the fully closed position, so that when it reaches the water-stopping position, it becomes approximately flush with the surface of the frame body 10.

In addition, in the above embodiment, a single-wing door was constructed in which a single fixture (door body) rotates open and closed. As another example, it is also possible to construct a double-wing door (so-called "double door") in which the fixtures on both sides of the width rotate open and closed. In this case, the above-mentioned biaxial hinges A and B can be provided between the end of the fixture and the frame member for each of the fixtures on the left and right sides.

Furthermore, in the above embodiment, as a particularly preferred example, the fitting device 1 is configured as a watertight door device, but the basic structure of this fitting device 1 can be applied to airtight door devices other than watertight door devices, such as a soundproof door device.
Furthermore, the basic structure of the fitting device 1 can be applied to fitting devices other than door devices, such as window devices and shoji screens that open and close by rotating the fitting.

The present invention is not limited to the above-described embodiments and can be modified as appropriate without departing from the spirit of the present invention.

1: Fitting device 10: Frame body 11: Door trailing edge side frame member 20: Fitting 51: Link member 52: First uniaxial hinge 52a: Support member 52b: Rotating member 53: Second uniaxial hinge 53a: Support member 53b: Rotating member A: (Some) biaxial hinge B: (Other) biaxial hinge c1: First rotation center c2: Second rotation center w1, w2: Axis distance

Claims (9)

The hinge comprises a fixture, a frame member adjacent to the door end of the fixture, and a biaxial hinge provided between the fixture and the frame member to support the fixture so that it can be rotated to open and close and move in the thickness direction of the fixture,
the biaxial hinge includes a link member having an axis distance between a first rotation center on one end side and a second rotation center on the other end side, the link member being provided in plurality along the first rotation center,
The link member is rotatably supported by the frame member with the first rotation center as a fulcrum, and rotatably supports the fitting with the second rotation center as a fulcrum,
A fitting device characterized in that a plurality of the biaxial hinges are provided, the first rotation centers of the plurality of biaxial hinges are located on the same axis, and some of the plurality of biaxial hinges have a different axis distance from the other biaxial hinges. The hinge comprises a fixture, a frame member adjacent to the door end of the fixture, and a biaxial hinge provided between the fixture and the frame member to support the fixture so that it can be opened and closed and rotated and can move in the thickness direction of the fixture,
the biaxial hinge includes a link member having an axis distance between a first rotation center on one end side and a second rotation center on the other end side, the link member being provided in plurality along the first rotation center,
The link member is rotatably supported by the frame member with the first rotation center as a fulcrum, and rotatably supports the fitting with the second rotation center as a fulcrum,
a plurality of the biaxial hinges are provided, and among the plurality of biaxial hinges, some of the biaxial hinges have a different axis distance from the other biaxial hinges;
A fitting device characterized in that the fitting rotates in the closing direction and then moves in the forward direction to come into approximately close contact with the frame member . 3. The fitting device according to claim 1, wherein the inter-axis distance of the some of the biaxial hinges is greater than that of the other biaxial hinges . The fitting device according to any one of claims 1 to 3, characterized in that the number of the some biaxial hinges is made different from the number of the other biaxial hinges . The biaxial hinge is provided in three or more, and among these three or more biaxial hinges, the biaxial hinge located on the central side is the part of the biaxial hinge. A fitting device according to any one of claims 1 to 4 . The fitting device according to any one of claims 1 to 5, characterized in that the link member is detachable from the frame member . The fitting device according to any one of claims 1 to 6, characterized in that the link member is detachable from the fitting . A fitting device as described in any one of claims 1 to 7, characterized in that each of the plurality of biaxial hinges comprises a first uniaxial hinge having the first rotation center located closer to the frame member, and a second uniaxial hinge having the second rotation center located closer to the door tip than the first uniaxial hinge . The fitting device according to claim 8, characterized in that one or both of the first uniaxial hinge and the second uniaxial hinge are composed of a support member fixed to the link member and a pivot member pivotally supported on the support member so as to be rotatable and detachable .