Door and window equipment

Abstract

To provide a fitting device capable of suppressing a fitting from wobbling during opening and closing operations.SOLUTION: The fitting device includes: a fitting 20; a frame member close to the door end of the fitting 20; and multiple biaxial hinges A and B that are placed between the fitting 20 and the frame member to support the fitting 20 so as to be opened and closed and moved in the thickness direction of the fitting. Each of the biaxial hinges A and B includes a link member 51 with an interaxial distance between a first rotation center c1 at one end side and a second rotation center c2 at the other end side, and multiple bi-axial hinges are provided along the first rotation center c1. The link member 51 is rotatably supported by the frame member with the first rotation center c1 as a fulcrum, and the fitting 20 is rotatably supported with the second rotation center c2 as the fulcrum. Multiple biaxial hinges A and B are provided, and out of the multiple biaxial hinges A and B, some biaxial hinges A are different from other biaxial hinges B in the interaxial distance.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a fitting device that rotates doors, windows, shoji screens, etc. to open and close them. [Background technology]

[0002] Conventional inventions of this type, for example as described in Patent Document 1, include a connecting rod that is spanned 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 two axes, the first axis and the second axis, and pushed into the door frame to press firmly against the packing. This improves the soundproofing performance, waterproofing performance, and other sealing performance when the door is closed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-25274 [Patent Document 2] Japanese Patent Application Laid-Open No. 2018-59369 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-mentioned conventional technology, the door is made rotatable and movable in the thickness direction by two parallel shafts (first shaft and second shaft). Therefore, while the door is rotating or in the closed state, the rotation of the two shafts may cause the door to wobble in the thickness direction. [Means for solving the problem]

[0005] In view of the above problems, the present invention has the following configuration. The hinge comprises a fixture, a frame member close to the door edge 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 open and closed and move in the thickness direction of the fixture, 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 fixture with the second rotation center as a fulcrum, and 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 Among the plurality of biaxial hinges, some of the biaxial hinges have a different inter-axis distance from 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 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. [Effects of the Invention]

[0006] Since the present invention is configured as described above, it is possible to prevent wobbling of the fitting during opening and closing operations. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a front view of an example of a fitting device according to the present invention as viewed from the outdoor side. [Figure 2] FIG. 2 is a cross-sectional view taken along the line (II)-(II) in FIG. [Figure 3] FIG. 2 is a cross-sectional view taken along the line (III)-(III) in FIG. [Figure 4] FIG. 2 is an exploded perspective view showing a biaxial hinge portion of the same fitting device. [Figure 5] FIG. 2 is a front view of a biaxial hinge used in the fitting device, showing the hinge in a separated state. [Figure 6] 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. [Figure 7] (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. DETAILED DESCRIPTION OF THE INVENTION

[0008] This embodiment discloses the following features. The first feature is that the door frame includes a fitting, a frame member close to the end of the door 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 rotate to open and close and 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 biaxial hinges 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 Figures 1 to 7).

[0009] As a second feature, the some of the biaxial hinges have a larger inter-axis distance than the other biaxial hinges (see FIGS. 1 to 3 and 5 to 7).

[0010] As a third feature, the number of the some biaxial hinges is made different from the number of the other biaxial hinges (see FIG. 1).

[0011] As a fourth feature, three or more biaxial hinges are provided, and among these three or more biaxial hinges, the biaxial hinge located on the central side is one of the biaxial hinges (see FIG. 1).

[0012] As a fifth feature, the link member is detachable from the frame member (see FIGS. 5 and 6).

[0013] As a sixth feature, the link member is detachable from the fixture (see Figs. 5 and 6).

[0014] A seventh feature is that it is equipped with a first uniaxial hinge whose first rotation center is located closer to the frame member, and a second uniaxial hinge whose second rotation center is located closer to the door tip than the first uniaxial hinge (see Figures 2 to 7).

[0015] As an eighth feature, one or both of the first uniaxial hinge and the second uniaxial hinge are configured with a support member fixed to the link member, and a rotating member pivotally supported on the support member so as to be rotatable and detachable (see FIGS. 4 to 6).

[0016] As a ninth feature, the fitting is rotated in the closing direction and then moves in the projection direction to come into substantially close contact with the frame member (see Fig. 7(a3)(b3)).

[0017] <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 fitting 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.

[0018] In the following description, the outdoor side refers to one side in the thickness direction of the fitting 20 in a fully closed state. According to the illustrated example, the outdoor space is the space located on the opening side of the fitting 20 in a 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 fitting thickness direction as the indoor side and the other side as the outdoor side.

[0019] 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.

[0020] 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.

[0021] In the following description, the "visible direction" refers to the thickness direction (depth direction) of the frame member, and the "visible direction" refers to the width direction (left-right direction) of the frame member, which is a direction substantially perpendicular to the "visible direction."

[0022] 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 can move in the thickness direction of the fitting, and forms a watertight door device that exhibits watertight performance by pushing the fitting 20 toward the indoor side after it has been almost fully closed.

[0023] 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 close to the trailing edge of the door fixture 20 when it is closed, a leading-side frame member 12 that faces and is close 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 close to the upper and lower ends of the door fixture 20, respectively. The 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 metal.

[0024] The trailing edge frame member 11 is a member that extends vertically in a long, continuous shape. A groove 11a that extends vertically and has an opening facing the outdoors is provided on the inside of the trailing edge frame member 11, on the indoor side of the fitting 20. 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 FIGS. 2, 3 and 7).

[0025] The leading edge frame member 12 is formed symmetrically to the trailing edge frame member 11. Although not shown in the figures, an elastic member 40 is also attached to this leading edge frame member 12 so that it is pressed against the indoor side of the fitting 20 in the fully closed state.

[0026] 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 also attached to these upper frame member 13 and lower frame member 14 so that they are pressed against the indoor side of the door fitting 20 in the fully closed state.

[0027] 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 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.

[0028] 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 fitting 20 in the fully closed state, on the inner side or outer side of the elastic member 40 in the width direction of the fitting. For example, the structure disclosed in Figure 2 of Patent Document 1 can be applied to this configuration.

[0029] The fitting 20 is a door body that has a rectangular plate shape when viewed from the front. The interior of this 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).

[0030] The front panel 21 and 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 back panel 22 are prevented from bending by multiple frames (not shown) inside. The top plate 21 and the back plate 22 can be made up of a single plate material or three or more plate materials.

[0031] A plurality of 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, inserting this engaging member into an engaged portion (not shown) provided on the frame body 10 and sliding it against a 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 Patent Document 2, for example.

[0032] 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.

[0033] 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 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 inter-axis distance from other biaxial hinges B.

[0034] In particular, according to the example shown in FIG. 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) inter-axial distance than biaxial hinges B, B, which are located on both the upper and lower sides of biaxial hinge A.

[0035] The biaxial hinge A is configured by including a link member 51 with an inter-axial distance between a first rotation center c1 on one end side and a second rotation center c2 on the other end side, a first uniaxial hinge 52 with the first rotation center c1 located closer to the trailing edge side frame member 11, and a second uniaxial hinge 53 with the second rotation center c2 located closer to the door tip side than the first uniaxial hinge 52 (see Figures 2 and 4). Each member that makes up this biaxial hinge A is made of a hard material such as a metal with good corrosion resistance (for example, stainless steel).

[0036] 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.

[0037] A rectangular flat cover plate 54 is fastened to the link member 51 by fasteners 35 so as to cover almost 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.

[0038] The first uniaxial hinge 52 has a rotating member 52b rotatably and detachably supported on a support member 52a. A general flag hinge can be used for this first uniaxial hinge 52.

[0039] 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 on the fixture 20 side) 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).

[0040] The rotating member 52b is a member arranged vertically (in the illustrated example, below) with respect to the support member 52a on the first rotation center c1, and is formed in a substantially rectangular plate shape. A substantially cylindrical shaft portion 52b1 is provided on one end side in the width direction of the rotating member 52b so as to protrude toward the support member 52a (see FIGS. 4 and 5).

[0041] The shaft portion 52b1 is fitted into the bearing portion 52a1 of the support member 52a, thereby rotatably supporting the support member 52a. The shaft portion 52b1 is axially insertable into and removable from the bearing portion 52a1.

[0042] The rotating member 52b having the above-described configuration is fastened and fixed to the trailing edge side frame member 11 by the fastener 35 so that the shaft portion 52b1 is disposed on the front side (see FIG. 4).

[0043] The second uniaxial hinge 53, similarly to the first uniaxial hinge 52, rotatably and detachably supports a rotating member 53b relative to a support member 53a.

[0044] 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 protruding in one direction in the vertical direction at one end side in the width 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)(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.

[0045] The spacer 55 is a rectangular flat plate-shaped member that is sandwiched between the support member 53a and the link member 51. As an example other than the example shown in the drawings, the spacer 55 can be formed integrally with the support member 53a or the link member 51.

[0046] 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 on 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 fastening using fasteners 35 (for example, screws, bolts, rivets, etc.), but other fixing means such as welding can also be used.

[0047] Spacer 56 is a rectangular flat plate-like member that is sandwiched between rotating member 53b and substrate 57. As an example other than the example shown in the drawings, spacer 56 can be a part that is formed integrally with rotating member 53b or substrate 57.

[0048] The base plate 57 is a rectangular flat plate member having appropriate rigidity and thickness, and is fixed to the front panel 21 of the fitting 20 by a fastener 35.

[0049] In the illustrated example, the fastener 35 inserted into the base plate 57 penetrates the front plate 21 and is screwed into the reinforcing plate 58 on the back side of the front plate 21 and fastened. 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.

[0050] According to the biaxial hinge A having the above-described configuration, the link member 51 is rotatably supported on the trailing edge frame member 11 with the first rotation center c1 as a fulcrum, and rotatably supports the base plate 57 and the fitting 20 with the second rotation center c2 as a fulcrum.

[0051] Moreover, the biaxial hinge B is the same as the biaxial hinge A configured above, except that the inter-axis distance between the first rotation center c1 and the second rotation center c2 is shortened. 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 dimensions in the lateral direction different from those of the link member 51, the cover plate 54, and the base plate 57, respectively.

[0052] 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 within the range of 1.1 to 5.0, for example. In the fitting device 1 shown in the figure, w1:w2 is approximately 2:1.

[0053] A plurality of biaxial hinges A and B having the above configuration are arranged at intervals in the vertical direction. According to the example shown in Figure 1, biaxial hinges B are arranged near the upper end and lower end of the fitting 20, and biaxial hinge A is arranged between them.

[0054] Next, the work of hanging the fitting 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. Then, the pivoting member 53b of the second uniaxial hinge 53 that constitutes the biaxial hinge A is fixed to the fitting 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 fitting 20 via a spacer 56 and a substrate 57', etc.

[0055] 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 one component.

[0056] 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.

[0057] Next, in the biaxial hinge A portion, 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.

[0058] 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'.

[0059] These lifting operations to Therefore, as shown in Figs. 2, 3 and 7, the fitting 20 is connected to the trailing edge side frame member 11 so as to be able to rotate to open and close and to move in the fitting thickness direction. In this connected state, each of the link members 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.

[0060] Next, the action 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 fitting 20 is closed, the fitting 20 rotates in the closing direction around the first rotation center c1 at the biaxial hinge A (see Figure 7(a1)), and at the same time, the fitting 20 also rotates in the closing direction around the first rotation center 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 Fig. 7(a2)(b2)).

[0061] In normal use, the fitting 20 rotates between the fully closed state and the open state described above. During this rotation (FIGS. 7(a1)(b1)), due to the unevenness of the inter-axis distances w1, w2 of the biaxial hinge A and the biaxial hinge 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 fitting 20 is rotated to open or close, only rotation occurs around the first rotation center c1 of the biaxial hinges A and B, and the door fitting 20 is prevented from wobbling in the door thickness direction due to rotation around the two second rotation centers c2 and c2.

[0062] When water needs to be stopped due to flooding or the like, the pushing device 30 is operated in the fully closed state, the fitting 20 moves toward the interior along the projection direction, and the peripheral side of the fitting 20 is strongly pressed against the elastic member 40 that is integral with the frame body 10 (see Figures 7(a3)(b3)). As a result, the gap between the fitting 20 and the frame body 10 is almost completely closed, providing a watertight effect.

[0063] In this type of watertight operation, the link member 51 of the biaxial hinge A and the link member 51' of the biaxial hinge B each rotate toward the indoor side around the first rotation center c1 as a fulcrum, while the fitting 20 rotates toward the outdoor side around the second rotation center c2 as a fulcrum. 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 rotation center c1 as a fulcrum accompanying this movement is smaller than the rotation angle α2 of the link member 51' around the first rotation center c1 as a fulcrum (see Figures 7(a3) and (b3)).

[0064] Therefore, according to the fitting device 1 configured as described above, under normal circumstances, wobbling of the fitting 20 in the thickness direction can be suppressed, and the fitting 20 can be smoothly rotated to open and close 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 to and detached from the frame 10, resulting in excellent workability and maintainability.

[0065] <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, other examples include a configuration in which two biaxial hinges A are provided one above the other and one biaxial hinge B is provided between them, a configuration in which two or more biaxial hinges A are provided, a configuration in which three or more biaxial hinges B are provided, a configuration in which the same number of biaxial hinges A and biaxial hinges B (for example, one of each) are provided, and a configuration in which the number of biaxial hinges A is greater than the number of biaxial hinges B, and various other combinations are possible.

[0066] Furthermore, according to the above embodiment, the inter-axis distance w1 of the biaxial hinge A is made larger than the inter-axis distance w2 of the biaxial hinge B, but as another example, it is also possible to conversely make the inter-axis distance w1 of the biaxial hinge A smaller than the inter-axis distance w2 of the biaxial hinge B.

[0067] Furthermore, in the above embodiment, as a preferred example, the fitting 20 in the fully closed position (see Figures 7(a2)(b2)) before reaching the water-stopping position (see Figures 7(a3)(b3)) is configured to be approximately flush with the surface of the frame body 10, but 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, to be approximately flush with the surface of the frame body 10 when it reaches the water-stopping position.

[0068] Furthermore, in the above embodiment, a single-wing door was configured in which a single fixture (door body) was rotated open and closed. As another example, it is also possible to configure a double-wing door (so-called folding door) in which the fixtures on both sides of the width are rotated open and closed, and 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.

[0069] Furthermore, in the above embodiment, as a particularly preferred example, the fitting device 1 is configured as a waterproof door device, but the basic structure of this fitting device 1 can be applied to airtight door devices other than waterproof door devices, such as soundproof door devices. 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.

[0070] The present invention is not limited to the above-described embodiments, and can be modified as appropriate within the scope of the present invention. [Explanation of symbols]

[0071] 1: Door and window equipment 10:Frame body 11: Door end frame member 20: Doors and windows 51: Link member 52: First single-axis hinge 52a: Support member 52b: Rotating member 53: Second single-axis hinge 53a: Support member 53b: Rotating member A: (Some) biaxial hinges B: (Other) Biaxial Hinge c1: First rotation center c2: Second rotation center w1,w2: Distance between axes

Claims

1. The hinge comprises a fixture, a frame member adjacent to the door edge 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 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.

2. A door and window unit comprising: a door frame member adjacent to the end of the door frame; and a biaxial hinge provided between the door frame and the frame member, which supports the door frame so that it can be rotated to open and close and can move in the direction of the door frame thickness; 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. A building and fitting device as described in claim 1 or 2, characterized in that some of the biaxial hinges have a larger inter-axis distance than the other biaxial hinges.

4. A building and fitting device as described in any one of claims 1 to 3, characterized in that the number of the some biaxial hinges is different from the number of the other biaxial hinges.

5. A building and fixture device as described in any one of claims 1 to 4, characterized in that three or more biaxial hinges are provided, and of these three or more biaxial hinges, the biaxial hinge located on the central side is one of the biaxial hinges.

6. A building and fixture device as described in any one of claims 1 to 5, characterized in that the link member is detachable from the frame member.

7. A fitting device as described in any one of claims 1 to 6, characterized in that the link member is detachable from the fitting.

8. A building and fixture 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 center of rotation positioned closer to the frame member, and a second uniaxial hinge having the second center of rotation positioned closer to the door end than the first uniaxial hinge.

9. A building and fixture device as described in 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 pivotable member pivotally supported on the support member so as to be rotatable and detachable.

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