swing door hinge device

Abstract

To provide a hinge device of a hinged door capable of stopping a shaft main body of a shaft body from falling out of a shaft guide body, thereby preventing a hinged door main body from falling out of a door frame and falling over.SOLUTION: A hinge device X1 comprises: a shaft guide body 11 fixed on an upper end face Ya of a hinged door main body Y2; and a shaft body 12 fixed on an upper frame 53 of a door frame Y1. The shaft body 12 includes: a shaft main body 6 that penetrates a shaft guide hole 11 of the shaft guide body 11, disposed in a shaft storage hole 16; and a flange 7 fixed on the shaft main body 6, disposed in the shaft storage hole 16 expanding from the shaft guide hole 15 via a step part 17. When the hinged door main body Y2 moves downward in a vertical direction UD (floor face G side) with respect to the door frame Y1, a plate surface 7A of the flange 7 of the shaft body 12 is abutted on the step part 17 of the shaft guide body 11, which prevents the shaft main body 6 from falling out of the shaft guide body 11, thereby preventing the hinged door main body Y2 from falling out of the door frame Y1 and falling over.SELECTED DRAWING: Figure 45

Description

[Technical Field]

[0001] The present invention relates to a hinge device for a swing door that rotatably supports a swing door body of the swing door. [Background technology]

[0002] As a technology for supporting a swing door so that it can rotate freely, Patent Document 1 discloses a swing door support device. The support device includes an upper bearing fixed to the upper frame of the door frame, a rotating shaft fixed to the upper piece of the door and journaled by the upper bearing, a lower bearing fixed to the floor, and a rotating shaft fixed to the lower piece of the door and journaled by the lower bearing. The door opens and closes the door frame by supporting each rotary shaft rotatably by an upper bearing and a lower bearing. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 6-8659 Summary of the Invention [Problem to be solved by the invention]

[0004] In Patent Document 1, there is a risk that the rotation shaft will come off the upper bearing due to the downward movement of the door (towards the floor) in the vertical direction, causing the door to come off the door frame and fall over.

[0005] The present invention provides a hinge device for a swing door that can prevent the swing door body from coming off the door frame and falling over even if the swing door body moves downward in the vertical direction (towards the floor surface). [Means for solving the problem]

[0006] The hinge device for a swing door of the present invention comprises a door frame having a pair of left and right vertical frames and an upper frame disposed on the upper end sides of the vertical frames and installed between the vertical frames, and forming an opening inside the vertical frames and the upper frame, and a swing door body that opens and closes the opening in the door frame, and the swing door body is disposed in the opening with a gap between the upper end surface of the swing door body and the upper frame and a gap between the lower end surface of the swing door body and a floor surface, and the hinge device rotatably supports the swing door body, and has a rotation center line in the up-down direction, and a second hinge having a shaft guide and a shaft body, the shaft guide being disposed between the upper frame and the upper end surface of the swing door body with a gap between the upper end surface of the shaft guide and the upper frame, the lower end surface of the shaft guide being abutted against the upper end surface of the swing door body and fixed to the swing door body, and being disposed concentrically with the rotation center line of the first hinge, and the upper end surface of the shaft guide being abutted against the upper end surface of the swing door body. a shaft guiding hole that is open and formed between the upper end surface and the lower end surface of the shaft guide body, and a shaft accommodation hole that is formed between the shaft guide hole and the lower end surface of the shaft guide body and has a diameter enlarged from the shaft guide hole via an annular step portion, the shaft body is arranged concentrically with the hole center line of the shaft guide hole and has a shaft main body that is fixed to the upper frame with one shaft end facing the upper frame, and a flange that is arranged in the shaft accommodation hole, the shaft main body is arranged concentrically with the hole center line of the shaft guide hole and has one shaft end facing the upper frame, and a flange that is arranged in the shaft accommodation hole, the shaft main body is arranged concentrically with the hole center line of the shaft guide hole and has one shaft end facing the upper frame the flange is disposed on the other shaft end side of the shaft body, protruding radially from the outer peripheral surface of the shaft body and disposed between the hole peripheral surface (hole inner peripheral surface) of the shaft guide hole and the hole peripheral surface (hole inner peripheral surface) of the shaft storage hole, and is disposed in the shaft storage hole with a gap between it and the step portion and the lower end face of the shaft guide body in the up-down direction, and is disposed in the shaft storage hole with a gap between it and the hole peripheral surface of the shaft storage hole. In claim 1, the shaft body can also be configured so that the shaft guide body (shaft guide body fixed to the swing door body) is freely movable in the vertical direction together with the swing door body, and is freely rotatable together with the swing door body, passing through the shaft guide hole (shaft guide hole of the shaft guide body fixed to the swing door body), with the other shaft end side protruding from the shaft guide hole into the shaft storage hole.

[0007] The hinge device for a swing door of the present invention comprises a door frame having left and right vertical frames that are aligned with each other, and an upper frame that is disposed on the upper end sides of the vertical frames and spans between the vertical frames, forming an opening inside the vertical frames and the upper frame; and a swing door body that has a pair of left and right vertical stiles, an upper stile that is disposed on the upper end sides of the vertical frames and spans between the vertical frames, and a lower stile that is disposed on the lower end sides of the vertical frames and spans between the vertical frames, and that opens and closes the opening in the door frame, and the swing door hinge device is configured to open and close the opening in the door frame with a gap between the upper stiles and the upper frame and a gap between the lower stile and a floor. In a swing door having a body disposed in the opening, a hinge device rotatably supports the swing door body, the hinge device comprising: a first hinge having a vertical rotation center line, disposed between the lower frame and the floor surface, and rotatably supporting the swing door body; and a second hinge having a shaft guide and a shaft body, wherein the shaft guide is incorporated into and fixed to the upper frame with an upper end surface of the shaft guide facing the upper frame, and is disposed concentrically with the rotation center line of the first hinge, and has an opening at the upper end surface of the shaft guide and a shaft body. and a shaft accommodating hole formed between the end face and a lower end face of the shaft guide body, the shaft accommodating hole being formed between the shaft accommodating hole and the lower end face of the shaft guide body and expanding in diameter from the shaft accommodating hole via an annular step portion, the shaft body being arranged concentrically with the shaft accommodating hole and having a shaft main body fixed to the upper frame with one shaft end facing the upper frame, and a flange being arranged in the shaft accommodating hole, the shaft main body passing through the shaft accommodating hole of the shaft guide body fixed to the upper frame so as to be movable in the up and down direction of the swing door body and rotatable the flange is disposed on the other shaft end side of the shaft body, protruding from the outer peripheral surface of the shaft body and disposed between the hole peripheral surface (hole inner peripheral surface) of the shaft guide hole and the hole peripheral surface (hole inner peripheral surface) of the shaft storage hole, is disposed in the shaft storage hole with a gap between it and the step portion and between it and the lower end face of the shaft guide body in the up-down direction, and is disposed in the shaft storage hole with a gap between it and the hole peripheral surface of the shaft storage hole. The present inventionIn this case, the shaft body can also be configured so that the shaft guide body (shaft guide body fixed to the upper frame) can move freely in the vertical direction together with the swing door body, and the shaft guide body (shaft guide body fixed to the upper frame) can rotate freely together with the swing door body, passing through the shaft guide hole (shaft guide hole of the shaft guide body fixed to the upper frame), with the other shaft end protruding from the shaft guide hole into the shaft storage hole. [Effects of the Invention]

[0008] According to the present invention, when the swing door body moves downward (towards the floor) in the vertical direction relative to the door frame due to a disaster such as an earthquake, the flange of the shaft body abuts the step portion of the shaft guide body, thereby preventing the shaft body of the shaft body from coming out of the shaft guide body (shaft guide hole and shaft storage hole), and preventing the swing door body from coming off the door frame and falling over. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a front view (front view) showing a hinge device and a swing door (door frame and swing door main body) of a first embodiment. [Figure 2] 2 is a cross-sectional view taken along the line AA in FIG. 1. [Figure 3] FIG. 2 is an enlarged view of part B in FIG. [Figure 4] FIG. 3 is an enlarged view of part C in FIG. 2. [Figure 5] FIG. 4 is a cross-sectional view taken along the line DD in FIG. 3. [Figure 6] 4 is a cross-sectional view of FIG. 3 taken along E-E axis. [Figure 7] FIG. 4 is an enlarged view of the FF cross section of FIG. 3. [Figure 8] FIG. 6 is an enlarged view of the cross section GG of FIG. 5. [Figure 9] FIG. 2 is an exploded perspective view showing a second hinge of the hinge device of the first embodiment. [Figure 10] (a) is an upper oblique view showing the first guide member of the shaft guide body (second hinge) in the hinge device of the first embodiment, and (b) is a lower oblique view showing the first guide member of the shaft guide body (second hinge) in the hinge device of the first embodiment. [Figure 11]4 is a plan view (top view) showing a first guide member of a shaft guide body (second hinge) in the hinge device of the first embodiment. FIG. [Figure 12] (a) is a bottom view (underside view) showing the first guide member of the shaft guide body (second hinge) in the hinge device of the first embodiment, and (b) is a front view (front view) showing the first guide member of the shaft guide body (second hinge) in the hinge device of the first embodiment. [Figure 13] 11(a) is a cross-sectional view taken along line HH in FIG. 11, and FIG. 12(b) is a cross-sectional view taken along line II in FIG. 12(b). [Figure 14] (a) is an upper oblique view showing the second guide member of the shaft guide body (second hinge) in the hinge device of the first embodiment, and (b) is a plan view (top view) showing the second guide member of the shaft guide body (second hinge) in the hinge device of the first embodiment. [Figure 15] (a) is a bottom view (underside view) showing the second guide member of the shaft guide body (second hinge) in the hinge device of the first embodiment, and (b) is a back view (rear view) showing the second guide member of the shaft guide body (second hinge) in the hinge device of the first embodiment. [Figure 16] 15(b) is a cross-sectional view taken along line JJ in FIG. 15(b), and FIG. 15(b) is a cross-sectional view taken along line KK in FIG. 15(b). [Figure 17] (a) is a plan view (top view) showing the shaft body (second hinge) in the hinge device of the first and second embodiments, and (b) is a bottom view (underside view) showing the shaft body (second hinge) in the hinge device of the first and second embodiments. [Figure 18] 17(a) is a front view (front view) showing the shaft body (second hinge) in the hinge device of the first and second embodiments, and FIG. 17(b) is a cross-sectional view taken along line LL of FIG. 17(a). [Figure 19] (a) is a front view (front view) of the hinge device of the first embodiment, in which the first guide member of the shaft guide body (second hinge) is fixed to the upper frame of the swing door body (upper end surface of the swing door body), and (b) is a plan view (top view) of the hinge device of the first embodiment, in which the first guide member of the shaft guide body (second hinge) is fixed to the upper frame of the swing door body (upper end surface of the swing door body). [Figure 20]FIG. 19(b) is an enlarged view of the MM cross section of FIG. 19(a). [Figure 21] 1 is a front view (front view) of the hinge device according to the first and second embodiments, in which a shaft (second hinge) is fixed to an upper frame of a door frame. [Figure 22] 1 is a front view (anterior view) of the hinge device of the first embodiment, in which the shaft body and flange of the shaft body are inserted into the first guide member (shaft guide hole groove, shaft storage hole groove) fixed to the hinge door body. FIG. [Figure 23] FIG. 23 is an enlarged view of the N-N cross section of FIG. 22. [Figure 24] 4 is a cross-sectional view showing a state in which the hinge device of the first embodiment has moved downward (toward the floor surface) in the vertical direction relative to the door frame. FIG. [Figure 25] 4 is a cross-sectional view showing a state in which the hinge device of the first embodiment has moved upward (toward the upper frame) in the vertical direction relative to the door frame. FIG. [Figure 26] 10 is a front view (front view) showing a hinge device and a swing door (door frame and swing door body) according to a second embodiment. FIG. [Figure 27] 27 is a cross-sectional view of FIG. 26 taken along line aa. [Figure 28] FIG. 27 is an enlarged view of part b in FIG. 26. [Figure 29] FIG. 28 is an enlarged view of part c in FIG. 27. [Figure 30] 28. This is a cross-sectional view of FIG. [Figure 31] FIG. 29 is an enlarged view of the ee cross section of FIG. 28. [Figure 32] FIG. 29 is an enlarged cross-sectional view of the ff cross section of FIG. [Figure 33] FIG. 31 is an enlarged view of the cross section gg in FIG. 30. [Figure 34] FIG. 10 is an exploded perspective view showing a second hinge of a hinge device according to a second embodiment. [Figure 35] (a) is an upper oblique view showing the first guide member of the shaft guide body (second hinge) in the hinge device of the second embodiment, and (b) is a plan view (top view) showing the first guide member of the shaft guide body (second hinge) in the hinge device of the second embodiment. [Figure 36](a) is a bottom view (underside view) showing the first guide member of the shaft guide body (second hinge) in the hinge device of the second embodiment, and (b) is a front view (front view) showing the first guide member of the shaft guide body (second hinge) in the hinge device of the second embodiment. [Figure 37] FIG. 36(b) is an enlarged view of the cross section ii of FIG. [Figure 38] (a) is an upper oblique view showing the second guide member of the shaft guide body (second hinge) in the hinge device of the second embodiment, and (b) is a plan view (top view) showing the second guide member of the shaft guide body (second hinge) in the hinge device of the second embodiment. [Figure 39] (a) is a bottom view (underside view) showing the second guide member of the shaft guide body (second hinge) in the hinge device of the second embodiment, and (b) is a front view (front view) showing the second guide member of the shaft guide body (second hinge) in the hinge device of the second embodiment. [Figure 40] This is an enlarged cross section of FIG. 39(b) taken along line jj. [Figure 41] 10 is a front view (anterior view) of the hinge device according to the second embodiment, in which the first guide member of the shaft guide body (second hinge) is assembled into the upper frame of the hinge door body. FIG. [Figure 42] 10 is a plan view (top view) of the hinge device of the second embodiment, in which a first guide member of a shaft guide body (second hinge) is incorporated into the upper frame of the hinge door body. FIG. [Figure 43] FIG. 42 is an enlarged view of the k-k cross section of FIG. 41. [Figure 44] 10 is a front view (full view) of the hinge device of the second embodiment, in which the shaft body and flange of the shaft body are inserted into the first guide member (shaft guide hole groove, shaft storage hole groove) incorporated into the upper frame of the swing door body. FIG. [Figure 45] This is a cross-sectional view of Figure 44. [Figure 46] 10 is a cross-sectional view showing a state in which the hinge device of the second embodiment has moved downward (toward the floor surface) in the vertical direction relative to the door frame. FIG. [Figure 47] 10 is a cross-sectional view showing a state in which the hinge door body has moved upward (toward the upper frame) in the vertical direction relative to the door frame in the hinge device of the second embodiment. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] The hinge devices for swing doors according to the first and second embodiments will be described with reference to FIGS. 1 to 47. FIG.

[0011] A hinge device (support device) for a swing door according to a first embodiment will be described with reference to FIGS.

[0012] 1 to 25, a hinge device X1 for a swing door according to a first embodiment (hereinafter referred to as "hinge device X1") supports a swing door body Y2 of a swing door Y so as to be freely rotatable.

[0013] As shown in FIGS. 1 to 4, the swing door Y (single swing door) includes a door frame Y1 and a swing door body Y2 (single swing door body).

[0014] As shown in Figures 1 to 4, the door frame Y1 is placed in a door opening F formed in a wall E of a building, for example, and fixed to the wall E of the building. The door opening F is formed in the wall E from a floor G (floor) of the building. The door frame Y1 has a pair of left and right vertical frames 51, 52 (vertical frame members) and an upper frame 53 (upper frame member).

[0015] As shown in FIGS. 1 to 4 , the vertical frames 51, 52 (right vertical frame 51, left vertical frame 52) are arranged parallel to each other within the door opening F with a gap between them. The vertical frames 51, 52 are arranged parallel to each other with a gap between them in the left-right direction LR. The vertical frames 51, 52 are erected on the floor G of the building and fixed to a wall E of the building. The vertical frames 51, 52 extend upward from the floor G of the building in a vertical direction UD perpendicular to the floor G (hereinafter referred to as the "vertical direction UD"). The vertical frames 51, 52 extend between the floor G of the building and the upper end of the door opening F in the vertical direction UD and are fixed to the wall E of the building.

[0016] As shown in Figures 1 to 4, the upper frame 53 (horizontal frame / horizontal member) is disposed on the upper end side of each vertical frame 51 (the upper end side of the door opening F) in the up-down direction UD within the door opening F. The upper frame 53 is installed between the vertical frames 51, 52 and connected (fixed) to the vertical frames 51, 52. The upper frame 53 is fixed to the wall E of the building.

[0017] 1 and 2, the door frame Y1 forms an opening Z (inner opening) inside the vertical frames 51, 52 and the upper frame 53. The opening Z is formed in a rectangular shape (oblong shape) by the vertical frames 51, 52, the upper frame 53, and the floor surface G. The up-down direction UD is a direction perpendicular to the left-right direction LR, or a direction in which the vertical frames 51, 52 extend (the same applies hereinafter).

[0018] The swing door body Y2 (single swing door body) opens and closes the opening Z of the door frame Y1, as shown in Figures 1 to 4. The swing door body Y2 is formed, for example, in a rectangular shape. The swing door body Y2 has a pair of left and right vertical frames 61, 62, an upper frame 63 (upper horizontal frame / upper rail), a lower frame 64 (lower horizontal frame / lower rail), and a door panel 65. Each of the vertical frames 61, 62, the upper frame 63 and the lower frame 64 is made of metal, for example, an aluminum alloy.

[0019] As shown in FIGS. 1, 2 and 4, the vertical frames 61, 62 (right vertical frame 61, left vertical frame 62) are arranged in parallel with a gap between them in the left-right direction LR.

[0020] As shown in Figure 4, the upper frame 63 is formed as a hollow body having an internal space ε. As shown in Figures 1 to 4, the upper frame 63 is disposed on the upper end side of each vertical frame 61, 62 in the up-down direction UD. The upper frame 63 is installed between each vertical frame 61, 62 and connected (fixed) to each vertical frame 61, 62.

[0021] 1 and 2, the lower frame 64 is disposed on the lower end side of each vertical frame 61, 62 in the up-down direction UD. The lower frame 64 is disposed parallel to and spaced apart from the upper frame 63 in the up-down direction UD. The lower frame 64 is installed between each vertical frame 61, 62 and connected (fixed) to each vertical frame 61, 62. 1 and 2, the swing door body Y2 forms a rectangular frame body 66 by vertical frames 61, 62, an upper frame 63, and a lower frame 64. The swing door body Y2 forms an opening YA inside the vertical frames 61, 62, the upper frame 63, and the lower frame 64 (inside the frame body 66).

[0022] 1, 2 and 4, the door panel 65 is disposed inside the vertical frames 61, 62, the upper frame 63 and the lower frame 64 (inside the frame body 66). The door panel 65 closes (closes) the opening YA of the frame body 66 and is fixed to the vertical frames 61, 62, the upper frame 63 and the lower frame 64 (frame body 66). The door panel 65 is formed, for example, from a glass plate (such as a transparent glass plate).

[0023] As shown in Figures 1 to 4, the swing door Y is arranged in the opening Z of the door frame Y1 (inside the vertical frames 51, 52 and the upper frame 53) with a gap δ1 (upper door gap / first gap) between the upper frame 63 (upper end surface Ya of the swing door body Y2) of the swing door body Y2 and the upper frame 53, and a gap δ2 (lower door gap / second gap) between the lower frame 64 (lower end surface Yb ​​of the swing door body Y2) of the swing door body Y2 and the floor surface G.

[0024] As shown in FIGS. 1 to 4, the hinged door body Y2 is disposed within the opening Z of the door frame Y2 (inside the vertical frames 51, 52 and the upper frame 53).

[0025] 1 to 4, the swing door body Y2 is disposed in the opening Z of the door frame Y1 with the upper stile 63 facing the upper frame 53 and the lower stile 64 facing the floor surface G (floor). The swing door body Y2 is disposed in the opening Z of the door frame Y1 (inside the vertical frames 51, 52 and the upper frame 53) with a distance δ1 between the upper stile 63 and the upper frame 53 in the up-down direction UD. The swing door body Y2 is disposed in the opening Z of the door frame Y1 with the upper stile 63 parallel to the upper frame 53 and the lower stile 64 parallel to the floor surface G. The upper stile 63 is disposed parallel to the upper frame 53 of the door frame Y1 with a distance δ1 between them in the up-down direction UD. The upper frame 63 of the hinged door body Y2 has an upper end surface Ya facing the upper frame 53 in the vertical direction UD, and the upper end surface Ya of the upper frame 63 becomes the upper end surface Ya of the hinged door body Y1 in the vertical direction UD.

[0026] 1 and 2, the swing door body Y2 is disposed in the opening Z of the door frame Y1 with a distance δ2 between the bottom stile 64 and the floor G in the up-down direction UD. The swing door body Y2 is disposed in the opening Z of the door frame Y1 with the bottom stile 64 parallel to the floor G. The bottom stile 64 is disposed parallel to the floor G with a distance δ2 between them in the up-down direction UD. The bottom frame 64 of the hinged door body Y2 has a bottom end surface Yb ​​facing the floor surface G in the vertical direction UD, and the bottom end surface Yb ​​of the bottom frame 64 becomes the bottom end surface Yb ​​of the hinged door body Y1 in the vertical direction UD.

[0027] As shown in FIGS. 1 and 2, when the opening Z of the door frame Y1 is closed, the swing door body Y2 is disposed in the opening Z of the door frame Y1 with the vertical stiles 61, 62 facing the vertical frames 51, 52. When the opening Z of the door frame Y1 is closed, the swing door body Y2 is disposed in the opening Z of the door frame Y1 with a gap (right door gap / first gap) between the vertical stile 61 (right vertical stile) and the vertical frame 51 (right vertical frame) and a gap (left door gap / second gap) between the vertical stile 62 (left vertical stile) and the vertical frame 52 (left vertical frame). When the opening Z of the door frame Y1 is closed, the swing door body Y2 is disposed in the opening Z of the door frame Y1 with the vertical stiles 61, 62 parallel to the vertical frames 51, 52. The vertical frames 61, 62 are arranged parallel to the vertical frames 51, 52 with a gap therebetween when the opening Z of the door frame Y1 is closed by the hinged door body Y2.

[0028] As shown in FIGS. 1 to 8, the hinge door body Y2 is rotatably supported (pivotally supported) by a hinge device X1, and opens and closes the opening Z of the door frame Y1.

[0029] The hinge device X1 includes a first hinge 1 (for example, a floor hinge) and a second hinge 2, as shown in FIGS.

[0030] As shown in Figures 1 and 2, the first hinge 1 (lower hinge) has a rotation center line a in the up-down direction UD and is disposed between the bottom frame 64 (the lower end surface Yb ​​of the swing door main body Y1) and the floor surface G. The first hinge 1 has a rotation center line a that extends along each of the vertical frames 51, 52 of the door frame Y1. The first hinge 1 is disposed below (towards the floor surface G) the bottom frame 64 (the lower end surface Yb ​​of the swing door main body Y2) of the swing door main body Y2 in the up-down direction UD.

[0031] 1, the first hinge 1 is disposed between the bottom frame 64 (the lower end surface Yb ​​of the swing door main body Y2) and the floor surface G, at a distance δ3 (hinge distance / third distance) from the vertical frame 62 and at a distance δ9 (ninth distance) from the vertical frame 52 in the left-right direction LR. The first hinge 1 is disposed, for example, on the vertical frame 62 side (vertical frame 52 side) in the left-right direction LR. The first hinge 1 rotatably supports (pivotally supports) the swing door main body Y2 at the lower end Yb of the swing door main body Y2.

[0032] As shown in FIGS. 1 and 2, the first hinge 1 has, for example, a support shaft 3 and a bearing 4 (bearing member).

[0033] As shown in FIG. 1, the support shaft 3 is disposed on the bottom frame 64 (the bottom end surface Yb ​​of the swing door main body Y2) of the swing door main body Y2, spaced apart from the vertical frame 62 by a distance δ3 and spaced apart from the vertical frame 52 by a distance δ9 (ninth distance) in the left-right direction LR. The support shaft 3 is disposed on the vertical frame 62 side (the vertical frame 52 side) by a distance δ3 in the left-right direction LR. As shown in FIGS. 1 and 2, the support shaft 3 is disposed on the bottom frame 64 (the bottom end surface Yb ​​of the swing door main body Y2) with the shaft center line a of the support shaft 3 facing in the up-down direction UD. The support shaft 3 is disposed in the swing door main body Y2 with one shaft end side fixed to the bottom frame 64 (the bottom end surface Yb ​​side of the swing door main body Y2). The support shaft 3 protrudes in the up-down direction from the lower end surface Yb ​​of the lower frame 64 (the lower end surface Yb ​​of the hinged door main body Y2) toward the floor surface G.

[0034] 1, the bearing 4 is disposed opposite the lower end surface Yb ​​of the lower frame 64 (the lower end surface Yb ​​of the swing door main body Y2) at a distance δ3 from the vertical frame 62 and at a distance δ9 (ninth distance) from the vertical frame 52 in the left-right direction LR. The bearing 4 is disposed on the vertical frame 62 side (vertical frame 52 side) at a distance δ3 from the vertical frame 62 in the left-right direction LR. The bearing 4 is fixed to, for example, a floor surface G (floor).

[0035] The bearing 4 has a bearing hole 5. The bearing hole 5 is formed in the bearing 4 with a hole depth (hole length) from the upper end surface of the bearing 4 in the up-down direction UD. The bearing hole 5 opens at the upper end surface of the bearing 4 and is arranged opposite the lower end surface Yb ​​of the bottom frame 64 (the lower end surface Yb ​​of the hinged door main body Y2). The bearing hole 5 is formed in the bearing 4 with the hole center line a of the bearing hole 5 located at a position separated from the vertical frame 62 by a distance δ3 in the left-right direction LR (a position separated from the vertical frame 52 by a distance δ9).

[0036] 1 and 2, the hinged door body Y2 is rotatably disposed on the bearing 4 with the support shaft 3 inserted into the bearing hole 5 from the other shaft end 3B, and the other shaft end 3B (shaft end face) of the support shaft 3 abutting against the hole bottom surface 5A of the bearing hole 5. The support shaft 3 is inserted into the bearing hole 5 with a gap between it and the hole circumferential surface (hole inner circumferential surface) of the bearing hole 5. 1 and 2, the first hinge 1 has a support shaft 3 fixed to the bottom frame 64 (swing door body Y2) inserted into a bearing hole 5, and the swing door body Y2 is rotatably supported (pivoted) by a bearing 4. In the first hinge 1, the shaft center line a of the support shaft 3 becomes the rotation center line a of the first hinge 1 (swing door body Y2).

[0037] 1 to 8, the second hinge 2 (upper hinge) is disposed between the upper frame 53 of the door frame Y1 and the upper stile 63 (upper end surface Ya of the swing door main body Y2) in the up-down direction UD. The second hinge 2 is disposed between the upper frame 53 and the upper end surface Ya of the upper stile 63 (upper end surface Ya of the swing door main body Y2) in the up-down direction UD.

[0038] The second hinge 2 has a shaft guide body 11 and a shaft body 12, as shown in FIGS.

[0039] The shaft guide body 11 is made of metal, for example, a zinc alloy. As shown in Figures 1 to 8, the shaft guide body 11 is disposed between the upper frame 53 and the upper stile 63 (upper end surface Ya of the upper stile 63 / upper end surface Ya of the swing door main body Y2) with a distance δ4 (fourth distance) between the upper end surface 11A of the shaft guide body 11 in the up-down direction UD and the upper frame 53 of the door frame Y1. The shaft guide body 11 is disposed with a distance δ4 between the upper end surface Ya of the shaft guide body 11 and the upper frame 53 in the up-down direction UD. The shaft guide body 11 is disposed at a distance δ3 (third distance) from the vertical frame 62 and at a distance δ9 from the vertical frame 52 in the left-right direction LR.

[0040] As shown in Figures 1 to 4, the shaft guide body 11 is fixed to the swing door body Y2 (upper frame 63 of the swing door body Y2) by abutting the lower end surface 11B of the shaft guide body 11 in the vertical direction UD against the upper frame 63 (upper end surface Ya of the upper frame 63 / upper end surface Ya of the swing door body Y2).

[0041] As shown in FIGS. 6 to 8, the shaft guide body 11 has a shaft guide hole 15 and a shaft accommodation hole 16.

[0042] 6 to 8, the shaft guide hole 15 is formed in the shaft guide body 11. The shaft guide hole 15 is arranged concentrically with the rotation center line a of the first hinge 1 (the shaft center line a of the support shaft 3). The shaft guide hole 15 is arranged concentrically with the rotation center line a of the first hinge 1 (the shaft center line a of the support shaft 3) with the hole center a of the shaft guide hole 15 located at a position separated from the vertical frame 62 by a distance δ3 (third distance) in the left-right direction LR (a position separated from the vertical frame 52 by a distance δ9). 6 and 8, the shaft guide hole 15 opens to the upper end surface 11A of the shaft guide body 11 and is formed between the upper end surface 11A and the lower end surface 11B of the shaft guide body 11. The shaft guide hole 15 opens to the upper end surface 11A of the shaft guide body 11 in the up-down direction UD and communicates between the upper end surface 11A of the shaft guide body 11 and the upper frame 53. The shaft guide hole 15 extends from the upper end surface 11A of the shaft guide body 11 toward the lower end surface 11B of the shaft guide body 11 in the up-down direction UD, having a hole length L1. The shaft guide hole 15 is formed as a circular hole having a radius r1 [a substantially circular hole having a radius r1, or a hole having an arc of a radius r1 (circular oblong hole)].

[0043] 7 and 8, the shaft storage hole 16 is formed in the shaft guide body 11. The shaft storage hole 16 is arranged concentrically with the rotation center line a of the first hinge 1 (the shaft center line a of the support shaft 3). The shaft storage hole 16 is arranged concentrically with the rotation center line a of the first hinge 1, with the hole center line a of the shaft storage hole 16 located at a position separated from the vertical frame 62 by a distance δ3 (third distance) in the left-right direction LR (a position separated from the vertical frame 52 by a distance δ9). 7 and 8, the shaft storage hole 16 is formed in the shaft guide body 11 so as to be continuous with the shaft guide hole 15 in the up-down direction UD. The shaft storage hole 16 is formed between the shaft guide hole 15 and the lower end surface 11B of the shaft guide body 11 in the up-down direction UD. The shaft storage hole 16 opens to the lower end surface 11B of the shaft guide body 11. The shaft storage hole 16 is expanded in diameter from the shaft guide hole 15 via an annular step 17 (step), and is formed as a circular hole having a radius r2 larger than the radius r1 of the shaft guide hole 15 [an approximately circular hole having a radius r2, or a hole having an arc of radius r2 (circular oblong hole)].

[0044] The step portion 17 is disposed between the shaft guide hole 15 and the shaft storage hole 16 and is formed contiguous to the shaft guide hole 15 and the shaft storage hole 16. The step portion 17 is expanded radially from the lower end of the shaft guide hole 15 with a hole radius r2 and is formed contiguous to the upper end 16A of the shaft storage hole 16.

[0045] As shown in FIGS. 9 to 16, the shaft guide body 11 has, for example, a first guide member 21 (base member) and a second guide member 22 (cover member).

[0046] The first guide member 21 (base member) is made of metal, for example, zinc metal. As shown in Figures 9 to 13, the first guide member 21 has a base 25 (base stand) and a pair of left and right fixing plates 26, 27.

[0047] 10 to 13, the base 25 is formed as a rectangular parallelepiped (three-dimensional shape) having a height HA in the up-down direction UD, a length LA in the left-right direction LR, and a width WA in the front-rear direction FR. The front-rear direction FR is a direction perpendicular to the up-down direction UD and the left-right direction LR.

[0048] As shown in Figures 10 to 13, the base 25 has a first mounting hole groove 28 (mounting groove), a shaft guide hole groove 29 (guide groove), a second mounting hole groove 30 (mounting groove), a shaft storage hole groove 31 (mounting groove), and a pair of left and right screw holes 32, 33 (female screw holes).

[0049] As shown in Figures 10 to 13, the first mounting hole groove 28 (first mounting hole groove) is formed in the first guide member 21. The first mounting hole groove 28 is disposed at the longitudinal center of the base 25 in the left-right direction LR (left-right direction LR of the base 25). The first mounting hole groove 28 has a hole groove width Wα (hole width) in the left-right direction LR, and is formed in the base 25. The hole groove width Wα of the first mounting hole groove 28 is the same width (hole groove width) as twice the radius of the shaft guide hole 15 [2 × (r1)].

[0050] 10 to 13, the first mounting hole groove 28 is opened in the front-to-rear direction FR in one side end surface 25C (front end surface / front side end surface) of the side end surfaces 25C, 25D of the base 25. The first mounting hole groove 28 is formed to extend in the front-to-rear direction FR from one side end surface 25C (front end surface) of the base 25 to the other side end surface 25D (rear end surface / rear side end surface).

[0051] 10 to 13, the first mounting hole groove 28 is formed in the base 25, opening to the upper end surface 25A of the base 25 in the up-down direction UD (the up-down direction UD of the base 23). The first mounting hole groove 28 has a hole groove length L1 from the upper end surface 25A of the base 25 in the up-down direction UD, and is formed between the upper end surface 25A and the lower end surface 25B of the base 25. The hole groove length L1 of the first mounting hole groove 28 is the same length as the hole length L1 of the shaft guide hole 15.

[0052] The shaft guide hole groove 29 (first shaft guide hole groove) is formed in the base 25, as shown in Figures 10 to 13. The shaft guide hole groove 29 is disposed at the longitudinal center of the base 25 in the left-right direction LR. The shaft guide hole groove 29 is disposed between the first mounting hole groove 28 and the side end surface 25D (rear end surface) of the base 25 in the front-rear direction FR. The shaft guide hole groove 29 is formed in the base 25 so as to be continuous with the first mounting hole groove 28 in the front-rear direction FR. The shaft guide hole groove 29 is connected to the first mounting hole groove 28 in the front-rear direction FR.

[0053] As shown in FIGS. 10 to 13, the shaft guide hole groove 29 is formed in a semicircular shape having the same radius r1 as the radius r1 of the shaft guide hole 15. The shaft guide hole groove 29 (first shaft guide hole groove) is formed in the base 25, opening to an upper end surface 25A of the base 25 in the up-down direction UD. The shaft guide hole groove 29 is semicircular in shape with a radius r1 and opens to the upper end surface 25A of the base 25. The shaft guide hole groove 29 has a hole groove length L1 (groove length) from the upper end surface 25A of the base 25 in the up-down direction UD, and is formed between the upper end surface 25A of the base 25 and the lower end surface 25B of the base 25.

[0054] As shown in Figures 10 to 13, the second mounting groove 30 (second mounting groove) is formed in the first guide member 21. The second mounting groove 30 is disposed at the longitudinal center of the base 25 in the left-right direction LR. The second mounting groove 30 has a groove width Wβ in the left-right direction LR and is formed in the base 25. The groove width Wβ of the second mounting groove 30 is the same width (groove width) as twice the radius r2 of the shaft receiving hole 16 [2 × (r2)].

[0055] 10 to 13, the second mounting hole groove 30 opens in a side end surface 25C (front end surface) of the base 25 in the front-to-rear direction FR. The second mounting hole groove 30 is formed to extend from one side end surface 25C (front end surface) of the base 25 to the other side end surface 25D (rear end surface) in the front-to-rear direction FR.

[0056] 10 to 13, the second mounting hole groove 30 is disposed between the first mounting hole groove 28 and the lower end surface 25B of the base 25 in the up-down direction UD. The second mounting hole groove 30 is formed in the base 25 so as to be continuous with the first mounting hole groove 28 in the up-down direction UD. The second mounting hole groove 30 opens to the lower end surface 25B of the base 25 in the up-down direction UD. The second mounting hole groove 30 is widened from the first mounting hole groove 28 via a step portion 30A.

[0057] As shown in Figures 10 to 13, the shaft storage hole groove 31 (first shaft storage hole groove) is formed in the base 25. The shaft storage hole groove 31 is disposed at the longitudinal center of the base 25 in the left-right direction LR. The shaft storage hole groove 31 is disposed between the second mounting hole groove 28 and the side end surface 25D (rear end surface) of the base 25 in the front-rear direction FR. The shaft storage hole groove 31 is formed in the base 25 so as to be continuous with the second mounting hole groove 30 in the front-rear direction LR. The shaft storage hole groove 31 is connected to the second mounting hole groove 30 in the front-rear direction FR.

[0058] As shown in Figures 10 to 13, the shaft storage hole groove 31 is arranged concentrically with the center line of the shaft guide hole groove 29 and is formed in a semicircular shape with a radius r2 that is the same as the radius r2 of the shaft storage hole 16. The shaft storage hole groove 31 is disposed between the shaft guide hole groove 29 and the lower end surface 25B of the base 25 in the up-down direction UD. The shaft storage hole groove 31 is formed in the base 25 so as to be continuous with the shaft guide hole groove 29 in the up-down direction UD. The shaft storage hole groove 31 opens to the lower end surface 25B of the base 25 in the up-down direction UD. The diameter of the shaft storage hole groove 31 is expanded from the shaft guide hole groove 29 via a step portion 31A.

[0059] 10 to 13, the screw holes 32, 33 are formed in the base 25. The screw holes 32, 33 are arranged between the side end faces 25E, 25F (right end face 25E, left end face 25F) of the base 25 in the left-right direction LR and the second mounting hole groove 30. The screw holes 32, 33 penetrate the base 25 in the front-rear direction FR and open to the side end faces 25C, 25D (front end face 25C, rear end face 25D) of the base 25.

[0060] As shown in FIGS. 10 to 13, the fixing plates 26 and 27 have plate front surfaces 26A and 27A and plate back surfaces 26B and 27B in the plate thickness direction (vertical direction UD).

[0061] 10 to 13, one of the fixed plates 26 is disposed on the lower end surface 25B side of the base 25 in the up-down direction UD and is fixed (connected) to the base 25. The fixed plate 26 is disposed so as to protrude from a side end surface 25E (right end surface) of the base 25 in the left-right direction LR. The fixed plate 26 is disposed so that the plate back surface 26B of the fixed plate 26 is flush with the lower end surface 25B of the base 25.

[0062] 10 to 13, the other fixed plate 27 is disposed on the lower end surface 25B side of the base 25 in the up-down direction UD and is fixed (coupled) to the base 25. The fixed plate 27 is disposed so as to protrude from the side end surface 25F (left end surface) of the base 25 in the left-right direction LR, and the fixed plate 27 is disposed so that the plate back surface 27B of the fixed plate 27 is flush with the lower end surface 25B of the base 25.

[0063] Each of the fixing plates 27, 28 has a bolt insertion hole 34. Each of the bolt insertion holes 34 penetrates each of the fixing plates 27, 28 in the up-down direction UD and opens to the plate front surfaces 27A, 28A and plate back surfaces 27B, 28B of each of the fixing plates 27, 28.

[0064] In the first guide member 21, a lower end surface 25B of the base 25 and rear surfaces 26B and 27B of the fixing plates 26 and 27 form a lower end surface 11B of the shaft guide body 11.

[0065] The second guide member 22 (lid member) is made of metal, such as a zinc alloy. As shown in Figures 9 and 14 to 16, the second guide member 22 has a lid base 35 (lid base), a first protrusion 36, a shaft guide hole groove 37 (second shaft guide hole groove / shaft guide groove), a pair of left and right second protrusions 38, 39, a shaft storage hole groove 40 (second shaft storage hole groove / shaft storage groove), and a pair of left and right bolt holes 41, 42.

[0066] As shown in FIGS. 14 to 16, the lid base 35 is formed, for example, as a rectangular parallelepiped (three-dimensional shape) having a height HA in the up-down direction UD, a length LA in the left-right direction LR, and a width WB in the front-rear direction FR.

[0067] As shown in FIGS. 14 to 16 , the first protrusion 36 is disposed on one side end surface 35C (rear end surface) of the side end surfaces 35C, 35D of the lid base 35 in the front-rear direction FR. The first protrusion 36 is disposed at the longitudinal center of the lid base 35 in the left-right direction LR. The first protrusion 36 has a protrusion width Wγ in the left-right direction LR and is fixed to the lid base 35. The first protrusion 36 extends from the upper end surface 35A of the lid base 35 to the lower end surface 35B in the up-down direction UD. The first protrusion 36 extends from the upper end surface 35A of the lid base 35 in the up-down direction UD by a protrusion length L1. The first protrusion 36 protrudes from the side end surface 35C (front end surface) of the lid base 35 by a protrusion amount τ1 in the front-rear direction FR.

[0068] The shaft guide hole groove 37 is formed in an arc shape having a hole groove radius r1 (radius r1) that is the same as the radius y1 of the shaft guide hole 15. 14 to 16, the shaft guide hole groove 37 (shaft guide groove) is formed in the first protrusion 36. The shaft guide hole groove 37 penetrates the first protrusion 36 in the up-down direction UD and opens to an upper end surface 36A and a lower end surface 36B in the up-down direction UD of the first protrusion 36. The shaft guide hole groove 37 opens to the upper end surface 36A and the lower end surface 36B of the first protrusion 36 in an arc shape having a radius r1. The shaft guide hole groove 37 has a hole groove length L1 (groove length) in the up-down direction UD. The shaft guide hole groove 37 is formed in the first protrusion 36, opening at a protruding end face 36C (front end face / front-side end face) of the first protrusion 36. The shaft guide hole groove 37 is formed in the first protrusion 36 in the front-rear direction FR, with a hole groove depth DA that is smaller than the radius r1 from the protruding end face 36C. The shaft guide hole groove 37 is formed in the first protrusion 36 by being recessed at the protrusion width center f of the first protrusion 36 in the left-right direction LR from the protruding end face 36C of the first protrusion 36 by the hole groove depth DA (maximum hole groove depth).

[0069] As shown in Figures 14 to 16, each of the second protrusions 38, 39 is disposed on a side end surface 35C of the lid base 35. The second protrusion 38 (right-side second protrusion) is disposed between the first protrusion 36 and one side end surface 35E (right-side end surface) of the lid base 35 in the left-right direction LR, at a distance δ6 (sixth distance / protrusion distance) from the length center f of the lid base 35. The second protrusion 39 (left-side second protrusion) is disposed between the first protrusion 36 and the other side end surface 35F (left-side end surface) of the lid base 35 in the left-right direction LR, at a distance δ6 (sixth distance) from the length center f of the lid base 35 in the left-right direction LR.

[0070] 14 to 16, each of the second protrusions 38, 39 is disposed in the up-down direction UD between the first protrusion 36 (the lower end surface 36B of the first protrusion 36) and the lower end surface 35B of the lid base 35. Each of the second protrusions 38, 39 extends to the lower end surface 35B of the lid base 35, with a gap between them and the lower end surface 36B of the first protrusion 36, in the up-down direction UD.

[0071] As shown in FIGS. 14 to 16, each of the second protrusions 38, 39 protrudes from the side end surface 35C (front end surface) of the lid base 35 in the front-rear direction FR by a protrusion amount τ1.

[0072] As shown in Figures 14 to 16, the shaft storage hole grooves 40 (shaft storage grooves) are formed in the lid base 35 between the second protrusions 38, 39 and between the second protrusions 38, 39 in the left-right direction LR. The shaft storage hole grooves 40 are formed between the lower end surfaces 36B of the first protrusions 36 and the lower end surface 35B of the lid base 35 in the up-down direction UD. The shaft storage hole grooves 40 are formed in the front-rear direction FR between the second protrusions 38, 39 and in the lid base 35 of the second protrusions 38, 39, with a hole groove depth DB (groove depth) that is smaller than the radius r2 from the protruding end surfaces 38A, 39A of the second protrusions 38, 39. The shaft storage hole groove 40 is recessed at the longitudinal center f of the lid base 35 from the protruding end faces 38A, 39A with a groove depth DB, and is formed in the lid base 35 between the second protrusions 38, 39 and at each of the second protrusions 38, 39. The shaft receiving hole groove 40 is arranged concentrically with the hole center line of the shaft guide hole groove 37 and is formed in an arc shape having the same hole groove radius r2 (radius r2) as the radius r2 of the shaft receiving hole 16.

[0073] 14 to 16, the bolt holes 41, 42 are formed in the lid base 35. The bolt hole 41 is disposed between the side end surface 35E (right end surface) of the lid base 35 and the second protrusion 38 in the left-right direction LR. The bolt hole 42 is disposed between the side end surface 35F (left end surface) of the lid base 35 and the second protrusion 39 in the left-right direction LR. As shown in FIGS. 14 to 16, the bolt holes 41, 42 penetrate the lid base 35 in the front-rear direction FR and open to the respective side end faces 35C, 35D (front end face / rear end face) of the lid base 35.

[0074] As shown in FIGS. 1 to 8, the shaft body 12 has a shaft main body 6 and a flange 7 (flange portion).

[0075] 1 to 8, the shaft body 6 is arranged concentrically with the hole center line a (rotation center line a of the first hinge 1) of the shaft guide hole 15 of the shaft guide body 11. The shaft body 6 is arranged with one shaft end 6A facing the upper frame 53 and fixed to the upper frame 53. The shaft body 6 is disposed so that the other shaft end 6B side protrudes from the shaft guide hole 15 into the shaft storage hole 16, passing through a shaft guide hole 15 of a shaft guide body 11 fixed to the swing door body Y2 (the upper end surface Ya of the swing door body Y2) so that the swing door body Y2 can move in the up-down direction UD (the up-down direction UD along the center line a of the rotation shaft) and can rotate (rotate around the center line a of the rotation). The shaft body 6 is disposed so that the shaft guide body 11 (the shaft guide body 11 fixed to the swing door body Y2) can move in the up-down direction UD together with the swing door body Y2 and can rotate together with the swing door body Y2, passing through the shaft guide hole 15 (the shaft guide hole 15 of the shaft guide body 11 fixed to the swing door body Y2) so that the other shaft end 6B side protrudes from the shaft guide hole 15 into the shaft storage hole 16. 6 and 8, the shaft body 6 passes through the shaft guide hole 15 of the shaft guide body 11 with a gap (slight gap) between it and the hole circumferential surface (hole inner circumferential surface) of the shaft guide hole 15, and is arranged with the other shaft end 6B protruding from the shaft guide hole 15 into the shaft storage hole 16. The shaft body 6 is arranged in the shaft storage hole 16 with a gap between the other shaft end 6B and the step portion 17 in the up-down direction UD, and with a gap between the other shaft end 6B and the lower end surface 11B of the shaft guide body 11 (the upper end surface Ya of the upper frame 63).

[0076] As shown in Figures 1 to 8, the flange 7 (flange portion) is disposed in the shaft housing hole 16. The flange 7 is disposed on the other shaft end 6B side of the shaft body 6. The flange 7 protrudes radially from the outer peripheral surface 6a of the shaft body 6 and is disposed between the hole peripheral surface of the shaft guide hole 15 and the hole peripheral surface (hole inner peripheral surface) of the shaft housing hole 16. The flange 7 is disposed in the shaft housing hole 16 at a distance δ7 (seventh distance / first flange distance) from the step portion 17 in the up-down direction UD, and at a distance δ8 (eighth distance / second flange distance) from the lower end surface 11B of the shaft guide body 11 (upper end surface Ya of the upper frame 63). The flange 7 is disposed in the shaft receiving hole 16 with a gap between it and the circumferential surface of the shaft receiving hole 16 in the radial direction of the shaft body 6 (left-right direction LR and front-rear direction FR). The flange 7 is arranged in the shaft receiving hole 16 so as to be able to abut against the step portion 17 of the shaft guide body 11 from inside the shaft receiving hole 16 .

[0077] As shown in FIGS. 9, 17 and 18, the shaft body 12 has, for example, a shaft fixing plate 8, a shaft main body 6 and a flange 7 (flange portion).

[0078] As shown in Figures 9, 17, and 18, the shaft fixing plate 8 is formed in a rectangular shape (rectangular plate, rectangular plate). The shaft fixing plate 8 has a plate front surface 8A and a plate back surface 8B in the plate thickness direction. The shaft fixing plate 8 has a shaft fixing hole 8a and multiple (four) plate fixing holes 8b, 8c, 8d, and 8e.

[0079] The shaft fixing hole 8a is formed in the shaft fixing plate 8, as shown in Figures 9, 17, and 18. The shaft fixing hole 8a is disposed at the center of the shaft fixing plate 8 in the longitudinal direction (left-right direction LR) and at the center of the shaft fixing plate 8 in the lateral direction (front-rear direction FR) (plate center of the shaft fixing plate 8). The shaft fixing hole 8a penetrates the shaft fixing plate 8 in the plate thickness direction (up-down direction UD) and opens on the plate front surface 8A and plate back surface 8B of the shaft fixing plate 8. The diameter of the shaft fixing hole 8a gradually decreases from the plate front surface 8A to the plate back surface 8B in the plate thickness direction (up-down direction UD).

[0080] The plate fixing holes 8b to 8e are formed in the shaft fixing plate 8 as shown in Figures 9, 17, and 18. The plate fixing holes 8b, 8c are arranged at intervals between the plate fixing holes 8b to 8e in the longitudinal direction (left-right direction LR) of the shaft fixing plate 8. The plate fixing holes 8b to 8e penetrate the shaft fixing plate 8 in the plate thickness direction (up-down direction UD) and open to the plate front surface 8A and the plate back surface 8B of the shaft fixing plate 8.

[0081] As shown in FIGS. 9, 17 and 18, the shaft body 6 has a shaft core member 9 (core member) and a sleeve 10.

[0082] The core material 9 is made of metal, for example, brass (free-cutting brass material). As shown in Figures 9, 17, and 18, the core material 9 is formed in a cylindrical shape and has a screw hole 43. The screw hole 43 is formed in the core material 9. The screw hole 43 is arranged concentrically with the core material 9 and opens at one axial end 9A of the core material 9. The screw hole 43 extends from one axial end 9A to the other axial end 9B of the core material 9 in the direction of the axial center line of the core material 9 (up-down direction UD). One shaft end 9A of the shaft core member 9 becomes one shaft end 6A of the shaft body 6. The other shaft end 9B of the shaft core member 9 becomes the other shaft end 6B of the shaft body 6.

[0083] The sleeve 10 is made of a metal different from the core material 9, for example, high carbon steel (high carbon chromium bearing steel). The sleeve 10 is formed in a cylindrical shape, as shown in Figures 9, 17 and 18. The sleeve 10 has a cylindrical length that is shorter than the axial length of the core material 9. The sleeve 10 is fitted onto the core material 9 and arranged concentrically with the core material 9. The sleeve 10 is fitted onto the core material 9 so as to be rotatable relative to the core material 9. The sleeve 10 is fitted onto the core material 9 and fixed to the core material 9. The core material 9 is inserted (press-fitted) into the sleeve 10 and arranged concentrically with the sleeve 10.

[0084] The flange 7 is made of metal, for example, brass (easy-cutting brass material), and is formed integrally with the core member 9. As shown in Figures 9, 17, and 18, the flange 7 is formed, for example, in the shape of an annular plate (annular). The flange 7 (flange plate) has a plate surface 7A and a plate back surface 7B in the plate thickness direction (vertical direction UD). The flange 7 is arranged concentrically with the core member 9 and the sleeve 10, with the plate surface 7A facing one axial end 9A of the core member 9 (one cylindrical end 10A of the sleeve 10). The flange 7 is fixed to the core member 9 with the plate surface 7A abutting against the other cylindrical end 10B of the sleeve 10. The flange 7 is fitted onto the core member 9 and arranged on the other axial end 9B side of the core member 9. The flange 7 is arranged to protrude radially (in the radial direction / diametrically outward direction of the core member 9) from the outer circumferential surface 9a of the core member 9. The flange 7 is disposed so as to protrude from an outer peripheral surface 10a of the sleeve 10 in the radial direction (diametrically outward direction) of the shaft core member 9 (sleeve 10). The outer peripheral surface 10a of the sleeve 10 becomes the outer peripheral surface 6a of the shaft body 6.

[0085] In the shaft body 12, the shaft body 6 (shaft core member 9) is fixed to the shaft fixing plate 8, as shown in Figures 17 and 18. The shaft core member 9 (shaft body 6) is arranged concentrically with the shaft fixing hole 8a of the shaft fixing plate 8, with one shaft end 9A (one shaft end 6A of the shaft body 6) facing the back surface 8B of the shaft fixing plate 8. The shaft body 6 is arranged with one shaft end 9A of the shaft core member 9 (one shaft end 6A of the shaft body 6) abutting against the back surface 8B of the shaft fixing plate 8. As shown in Figures 17 and 18, the shaft core member 9 (shaft body 6) is fixed to the shaft fixing plate 8 by screws 44 (flat screws). The screw 44 has a screw shaft 43A inserted into the shaft fixing hole 8a from the plate surface 8A of the shaft fixing plate 8, and the screw shaft 44A is screwed into the screw hole 43 of the shaft core member 9, thereby fixing the shaft body 6 (shaft core member 9) to the shaft fixing plate 8. The screw 44 has a screw head 44B inserted into the shaft fixing hole 8a, and the screw head 44B abuts against the hole circumferential surface (hole inner circumferential surface) of the shaft fixing hole 8a, thereby connecting the shaft fixing plate 8 and the shaft core member 9 (shaft body 6). In the shaft body 12, when the shaft core material 9 is fixed to the shaft fixing plate 8 with the screw 44, the flange 7 and the sleeve 10 are supported by the shaft fixing plate 8 via the shaft core material 9 and are positioned below (below) the shaft fixing plate 8 (rear surface 8B of the plate) in the vertical direction UD.

[0086] In Figures 1 to 8 and Figures 19 to 23, the hinged door body Y2 is rotatably supported on the door frame Y1 (upper frame 53) and floor surface G (floor) by the first hinge 1 (support shaft 3 and bearing 4) and the second hinge 2 [first and second guide members 21, 22 (shaft guide body 11) and shaft body 12 (shaft body 6 and shaft fixing plate 8)].

[0087] 19 and 20, the first guide member 21 of the shaft guide body 11 is arranged with the upper end surface 25A of the base 25 facing upward in the up-down direction UD of the swing door main body Y1. The first guide member 21 is arranged on the upper end surface Ya of the upper frame 63 of the swing door main body Y1 (the upper end surface Ya of the swing door main body Y2) with the side end surface 25C of the base 25 facing forward in the front-rear direction FR of the swing door main body Y2. The first guide member 21 is disposed in the left-right direction LR with a distance δ3 (third distance) between the center of the shaft guide hole groove 29 (shaft storage hole groove 31) and the vertical frame 62. The first guide member 21 is fixed to the upper frame 63 (the swing door main body Y2) by a pair of bolts 45 and nuts 46, with the lower end surface 25B of the base 25 and the back surfaces 26B, 27B of the fixing plates 26, 27 abutting against the upper end surface Ya of the upper frame 63 (the upper end surface Ya of the swing door main body Y2).

[0088] As shown in Figures 19 and 20, each bolt 45 is positioned so that the screw shaft 45A penetrates from the internal space ε of the upper frame 63 through the bolt insertion holes 34 of the upper frame 63 and each fixing plate 26, 27, and the screw shaft 45A protrudes upward from the plate surfaces 26A, 27A of each fixing plate 26, 27. Each nut 46 is screwed onto the screw shaft 45A of each bolt 45 protruding from each fixing plate 26, 27, and clamps each fixing plate 26, 27 and the upper frame 63 (upper end surface Ya of the swing door main body Y2) together with the bolt head 45B of each bolt 45, thereby fixing the second guide member 22 to the upper frame 63 (swing door main body Y2).

[0089] In Figure 21, the shaft body 12 is arranged in the opening Z of the door frame Y1 with the longitudinal direction of the shaft fixing plate 8 facing the left-right direction LR of the upper frame 53. The shaft body 12 is arranged in the opening Z with a distance δ9 (ninth distance) between the shaft center line of the shaft body 6 (shaft core member 9) and the vertical frame 52 in the left-right direction LR. The shaft body 12 is arranged in the opening Z with the other shaft end 9B of the shaft core member 9 (the other shaft end 6B of the shaft body 6) facing the floor surface G (floor) in the up-down direction UD. 21, the shaft body 12 is fixed to the upper frame 53 by a plurality of screws 47, with the plate surface 8A of the shaft fixing plate 8 abutting against the upper frame 53 from within the opening Z. Each screw 47 is arranged by passing the screw shaft 47A through each of the plate fixing holes 8b, 8c, 8d, and 8e of the shaft fixing plate 8 from within the opening Z of the door frame Y1 and screwing it into the upper frame 53. Each screw 47 fastens the shaft 12 (shaft fixing plate 8) to the upper frame 53 by screwing the screw shaft 47A into the upper frame 53 and abutting the screw head 47B against the rear surface 8B of the shaft fixing plate 8.

[0090] In Figures 1, 2, 22 and 23, when the second guide member 22 is fixed to the upper frame 63 (swing door main body Y2) and the shaft body 12 is fixed to the upper frame 53, the swing door main body Y2 is positioned within the opening Z of the door frame Y1 and is supported rotatably by the hinge device X1 (first and second hinges 1, 2).

[0091] As shown in Figures 1 and 2, the swing door body Y2 to which the first guide member 21 is fixed is rotatably supported by the first hinge 1 (support shaft 3 and bearing 4) within the opening Z of the door frame Y1 by inserting the support shaft 3 of the first hinge 1 into the bearing hole 5 of the bearing 5. As shown in Figures 22 and 23, the hinged door body Y2 to which the first guide member 21 is fixed has the support shaft 3 inserted into the bearing hole 5, the shaft body 6 (shaft core material 9 and sleeve 10) of the shaft body 12 fixed to the upper frame 53 inserted into the shaft guide hole groove 29 and shaft storage hole groove 31 of the first guide member 21, and the flange 7 inserted into the shaft storage hole groove 31 of the first guide member 21. As shown in Figures 22 and 23, when the hinged door body Y2 with the support shaft 3 inserted into the bearing hole 5 moves in the forward / backward direction FR, the shaft body 6 (shaft core material 9 and sleeve 10) and flange 7 are inserted into the first and second mounting hole grooves 28, 30 from the side end face 25C of the base 25, and are inserted (placed) into the shaft guide hole groove 29 and shaft storage hole groove 31 of the first guide member 21 through the first and second mounting hole grooves 28, 30.

[0092] When the shaft body 6 and flange 7 of the shaft body 12 fixed to the upper frame 53 are inserted (placed) into the shaft guide hole groove 29 and shaft storage hole groove 31 of the first guide member 21 fixed to the hinged door body Y1, the second guide member 22 of the shaft guide body 11 is fixed to the first guide member 21, as shown in Figures 1 to 8.

[0093] 3, 4, and 6 to 8, the second guide member 22 is arranged in the front-to-rear direction FR to face the side end surface 25C of the base 25 of the first guide member 21, which has the side end surface 35C of the lid base 35 fixed to the upper frame 63. The second guide member 22 is arranged so that the left-right direction LR of the lid base 35 faces the left-right direction LR of the base 25. The second guide member 22 is disposed on the first guide member 21 fixed to the hinged door main body Y2 by press-fitting (inserting) the first protrusion 36 from the side end surface 25C of the base 25 (first guide member 21) into the first mounting hole groove 28 of the first guide member 21 (base 25) in the front-rear direction FR, and by press-fitting (inserting) the second protrusions 38, 39 into the second mounting hole groove 30 of the first guide member 21 (base 25). In the up-down direction UD, the second guide member 22 is disposed on the first guide member 21 fixed to the hinged door main body Y2 by press-fitting (inserting) the first protrusion 36 into the first mounting hole groove 28 and by press-fitting (inserting) the second protrusions 38, 39 into the second mounting hole groove 30, with the upper end surface 35A of the lid base 35 (upper end surface 36A of the first protrusion 36) being flush with the upper end surface 25A of the base 25 of the first guide member 21. As the first protrusion 36 is pressed into the first mounting hole groove 28 and the second protrusions 38, 39 are pressed into the second mounting hole groove 30, the side end surface 35C of the lid base 35 abuts against the side end surface 35C of the base 25 of the first guide member 21, and the second guide member 22 is fixed to the first guide member 21 by a pair of bolts 48.

[0094] As shown in Figures 3 and 7, the screw shaft 48A of each bolt 48 is inserted into the bolt holes 41, 42 of the second guide member 22 (lid base 35) and screwed into the screw holes 32, 33 of the first guide member 21 (base 25), and the bolt head 48B is abutted (pressed) against the side end face 35D of the lid base 35 (second guide member 22), thereby fixing the second guide member 22 to the first guide member 21 (base 25).

[0095] As shown in Figures 6 to 8, when the first protrusion 36 is press-fitted into the first mounting hole groove 28 and the second protrusions 38, 39 are press-fitted into the second mounting hole groove 30 of the first and second guide members 21, 22, the shaft guide hole 15 of the shaft guide body 11 is formed by the shaft guide hole grooves 29, 37 (the shaft guide hole grooves 29, 37 and the first mounting hole groove 28), the shaft storage hole 16 of the shaft guide body 11 is formed by the shaft storage hole grooves 31, 40 (the shaft storage hole grooves 31, 40 and the second mounting hole groove 30), and the step 17 of the shaft guide body 11 is formed by the step 31A (step 30A) and the lower end surface 36B of the first protrusion 36 (second guide member 22).

[0096] In Figures 6 to 8, the shaft body 6 penetrates each shaft guide hole groove 29, 37 (shaft guide hole 15) with a gap between the outer peripheral surface 10a of the sleeve 10 (outer peripheral surface 6a of the shaft body 6) and the hole groove peripheral surface of each shaft guide hole groove 29, 37 (hole groove peripheral surface of the shaft guide hole 15 of the shaft guide body 11), and is arranged so that the other shaft end 9B side of the shaft core material 9 (the other shaft end 6B side of the shaft body 6) protrudes from each shaft guide hole groove 29, 37 (shaft guide hole 15) into each shaft storage hole groove 31, 40 (shaft storage hole 16). The shaft body 6 allows the swing door body Y2 to move freely in the vertical direction UD and to rotate freely, and is positioned so that the other shaft end 9B side of the shaft core material 9 protrudes from each shaft guide hole groove 29, 37 (first mounting hole groove 28) into each shaft storage hole groove 31, 40 (second mounting hole groove 30).

[0097] In Figure 8, the flange 7 protrudes radially from the outer peripheral surface 10a of the sleeve 10 of the shaft body 6 (the outer peripheral surface 6a of the shaft body 6) and is disposed between the peripheral surfaces of the shaft guide hole grooves 29, 37 (the peripheral surfaces of the shaft guide holes 15) and the peripheral surfaces of the shaft storage hole grooves 31, 40 (the peripheral surfaces of the shaft storage holes 16). The flange 7 is disposed in each of the shaft storage hole grooves 31, 40 (the shaft storage holes 16) with a gap between it and the step portion 31A (the step portion 30A) and the lower end surface 36B (the step portion 17) of the first protrusion 36 in the up-down direction UD. The flange 7 is disposed in each of the shaft storage hole grooves 31, 40 (the shaft storage holes 16) with a gap between it and the plate surface 7A and the lower end surface 36B (the step portion 17) of the first protrusion 36 in the up-down direction UD. The flange 7 is disposed in each of the shaft storage hole grooves 31, 40 (shaft storage holes 16) at a distance from the lower end surface 25B of the base 25 (upper end surface Ya of the upper frame 63) in the up-down direction UD. The flange 7 is disposed in each of the shaft storage hole grooves 31, 40 (shaft storage holes 16) at a distance from the lower end surface 25B of the base 25 (upper end surface Ya of the upper frame 63) in the up-down direction UD. The flange 7 is arranged in each shaft storage hole groove 31, 40 (shaft storage hole 16) with a gap between the outer surface 7a of the flange 7 and the hole groove circumferential surface of each shaft storage hole groove 31, 40 (hole groove circumferential surface of the shaft storage hole 16) in the radial direction of the shaft body 6. The flange 7 is positioned within each shaft storage hole groove 31, 40 (inside the shaft storage hole 16) so as to be able to abut against the step portion 31A (step portion 30A) and the lower end surface 36B (step portion 17) of the first protrusion portion 36 from within each shaft storage hole groove 31, 40 (inside the shaft storage hole 16).

[0098] 1 and 2, the hinged door body Y2 rotates relative to the door frame Y1 around the rotation center line a (axial center line of the support shaft 3) of the first hinge 1 and the axial center line of the shaft body 6 of the second hinge 2 as the rotation center, thereby opening and closing the opening Z of the door frame Y1. The hinged door body Y2 is guided (supported) by the support shaft 3 and bearing 4 (bearing hole 5) of the first hinge 1, and is guided (supported) by the shaft body 6 and shaft guide body 11 (shaft guide hole 15) of the second hinge 2, and rotates around the rotation center line a. The hinged door body Y2 is rotatable relative to the shaft body 12 by the second hinge 2 (the shaft guide body 11 and the shaft body 12) and is movable in the up and down direction UD.

[0099] As shown in Figure 25, when the hinged door body Y2 moves downward in the vertical direction UD (towards the floor G) relative to the door frame Y1 due to a disaster such as an earthquake, the flange 7 (plate surface 7A) of the shaft body 12 abuts against the step 17 [step 31A (step 30A) and the lower end surface 36B of the first protrusion 36] of the shaft guide body 11, preventing the shaft body 6 from coming out of the shaft guide body 11 (shaft guide hole 15, shaft storage hole 16), and preventing the swing door body Y2 from coming off the door frame Y1 and falling over. The hinged door body Y2 is guided by the shaft guide hole 15 of the shaft guide body 11 of the second hinge 2 and the shaft body 6 of the shaft body 12, and is moved downward in the up-down direction UD.

[0100] As shown in Figure 25, when the hinge door main body Y2 moves upward in the vertical direction UD (towards the upper frame 53) relative to the door frame Y1, the back surface 7B of the plate of the flange 7 of the shaft body 12 (the other shaft end 6B of the shaft main body 6) abuts against the upper end surface Ya of the upper frame 63 (the upper end surface Ya of the swing door main body Y2), preventing the shaft main body 6 from coming out of the shaft guide body 11 (shaft guide hole 15, shaft storage hole 16).

[0101] A hinge device for a swing door according to the second embodiment will be described with reference to FIGS. 26 to 47, the same reference numerals as those in FIGS. 1 to 25 denote the same members and structures, and detailed description thereof will be omitted.

[0102] 26 to 47, a hinge device X2 of a swing door Y of the second embodiment (hereinafter referred to as "hinge device X2") supports a swing door body Y3 of the swing door Y so as to be rotatable.

[0103] As shown in FIGS. 26 to 29, the swing door Y (single swing door) includes a door frame Y1 and a swing door body Y3 (single swing door body).

[0104] The hinged door body Y3 has a pair of left and right vertical frames 61, 62, an upper frame 63, a lower frame 64, and a door panel 65, as shown in FIGS.

[0105] As shown in Figures 28, 29, 31 and 32, the upper frame 63 is formed in a hollow body having an internal space ε. The upper frame 63 is disposed on the upper end side of each vertical frame 61, 62 in the up-down direction UD. The upper frame 63 is installed between each vertical frame 61, 62 and connected (fixed) to each vertical frame 61, 62. The upper frame 63 is disposed parallel to and spaced apart from the lower frame 64 in the up-down direction UD.

[0106] As shown in Figures 28, 29, 31, and 32, the upper frame 63 has an upper plate 67 and a lower plate 68 in the up-down direction UD, and a front plate 69 and a rear plate 70 in the front-rear direction FR. The upper plate 67, the lower plate 68, the front plate 69, and the rear plate 70 are arranged to extend between the vertical frames 61, 62 in the left-right direction LR. The upper frame 63 forms an internal space ε (space) within the upper frame 63 by the upper plate 67, the lower plate 68, the front plate 69, and the rear plate 70. The internal space ε extends in the left-right direction LR and is formed inside the upper frame 63.

[0107] The upper frame 63 has a first partition plate 71 and a second partition plate 72, as shown in FIGS.

[0108] As shown in Figures 29 and 32, the first partition plate 71 is disposed in the internal space ε (inside the upper frame 63) of the upper frame 63. The first partition plate 71 is disposed between the front plate 69 and the rear plate 70 in the front-to-rear direction FR, with a gap therebetween. The first partition plate 71 is disposed parallel to the front plate 69 and the rear plate 70. The first partition plate 71 is disposed between the upper plate 67 and the lower plate 68 in the up-down direction UD, and is fixed (connected) to the upper plate 67 and the lower plate 68. The first partition plate 71 extends in the left-right direction LR, and is disposed in the internal space ε of the upper frame 63.

[0109] As shown in Figures 29 and 32, the second partition plate 72 is disposed in the internal space ε (inside the upper frame 63) of the upper frame 63. The second partition plate 72 is disposed between the first partition plate 71 and the rear panel 70 in the front-to-rear direction FR, with a gap therebetween. The second partition plate 72 is disposed parallel to the first partition plate 71 and the rear panel 70. The second partition plate 72 is disposed between the upper panel 67 and the lower panel 68 in the up-down direction UD, and is fixed (connected) to the upper panel 67 and the lower panel 68. The second partition plate 72 extends in the left-right direction LR and is disposed in the internal space ε of the upper frame 63.

[0110] 29 and 32, the upper frame 63 divides the internal space ε into an insertion chamber ε1 (insertion space / first chamber) and an attachment chamber ε2 (attachment space / second chamber) in the front-to-rear direction FR by first and second partition plates 71, 72. The insertion chamber ε1 is formed between the front plate 69 and the first partition plate 71 in the front-to-rear direction FR, and the attachment chamber ε2 is formed between the first and second partition plates 71, 72 in the front-to-rear direction FR.

[0111] As shown in FIGS. 28, 29, 31 and 32, the upper frame 63 has a mounting hole 73, a horizontal insertion hole 74, a vertical insertion hole 75 and a pair of bolt holes 76, 77 on the left and right.

[0112] As shown in Figure 31, the mounting hole 73 is formed in the upper frame 63 (upper plate 67). The mounting hole 73 is arranged in the upper frame 63 (upper plate 67) at a distance δ3 (third distance) from the vertical frame 62 and at a distance δ9 (ninth distance) from the vertical frame 52 in the left-right direction LR. The mounting hole 73 has a hole width HX in the front-rear direction FR and a hole length LX in the left-right direction LR. The mounting hole 73 penetrates the upper plate 67 of the upper frame 63 in the up-down direction UD and opens to an upper plate surface 67A of the upper plate 67 (the upper end surface Ya of the hinged door main body Y3), and is connected to the mounting chamber ε1 (internal space ε).

[0113] As shown in Figures 28 and 32, the horizontal insertion hole 74 is formed in the upper frame 63 (front panel 69 and first partition panel 71). The horizontal insertion hole 74 is arranged in the upper frame 63 (front panel 69 and first partition panel 71) at a distance δ3 (third distance) from the vertical frame 62 and at a distance δ9 from the vertical frame 52 in the left-right direction LR. The horizontal insertion hole 74 has a hole width HY in the up-down direction UD and a hole length HX in the left-right direction LR. The horizontal insertion hole 74 penetrates the front panel 69 and the first partition panel 71 in the front-rear direction FR and opens in the front panel 69. The horizontal insertion hole 74 penetrates the first partition panel 71 in the front-rear direction FR and is connected to the insertion chamber ε1 and the attachment chamber ε2.

[0114] As shown in FIG. 31 , the vertical insertion hole 75 is formed in the upper frame 63 (upper plate 67). The vertical insertion hole 75 is disposed at the center of the hole lengths of the mounting hole 73 and the horizontal insertion hole 74 in the left-right direction LR. The vertical insertion hole 75 has a hole width WZ in the left-right direction LR and opens to the upper plate surface 67A of the upper plate 67 of the upper frame 63. The vertical insertion hole 75 extends between the mounting hole 73 and the front plate 69 in the front-rear direction FR and opens to the front plate 69. The vertical insertion hole 75 penetrates the upper plate 67 of the upper frame 63 in the up-down direction UD and opens to the upper plate surface 67A of the upper plate 67. The vertical insertion hole 75 penetrates the top plate 67 in the up-down direction UD and is connected to the insertion hole ε1 and the horizontal insertion hole 74.

[0115] 32, the bolt holes 76, 77 are arranged on both sides (right and left sides) of the lateral insertion hole 74 in the left-right direction LR. The bolt holes 76, 77 penetrate the front plate 69 and the first partition plate 71 in the front-rear direction FR and open in the front plate 69. The bolt holes 76, 77 penetrate the first partition plate 71 in the front-rear direction FR and communicate between the insertion chamber ε1 and the mounting chamber ε2.

[0116] As shown in Figure 26, the swing door Y is positioned within the opening Z of the door frame Y1 (inside the vertical frames 51, 52 and the upper frame 53) with a gap δA (first gap) between the upper frame 63 (upper plate surface 67A of the upper plate 67) of the swing door body Y3 and the upper frame 53, and a gap δ2 between the lower frame 64 of the swing door body Y3 and the floor surface G.

[0117] As shown in FIGS. 26 and 27, the hinged door body Y3 is disposed within the opening Z of the door frame Y1 (inside the vertical frames 51, 52 and the top frame 53).

[0118] As shown in Figures 26 to 29, the swing door body Y3 is disposed in the opening Z of the door frame Y1 with the upper stile 63 (upper plate surface 67A of the upper plate 67) facing the upper frame 53 and the lower stile 64 facing the floor G. The swing door body Y3 is disposed in the opening Z of the door frame Y1 with the upper stile 63 (upper plate 67) parallel to the upper frame 53 and the lower stile 64 parallel to the floor G. The upper stile 63 is disposed parallel to the upper frame 53 of the door frame Y1 in the vertical direction UD, with a distance δA between them. The upper plate surface 67A of the upper plate 67 of the upper stile 63 becomes the upper end surface Ya of the swing door body Y3.

[0119] As shown in FIGS. 26 to 33, the hinge door body Y3 is rotatably supported by a hinge device X2 to open and close the opening Z of the door frame Y1.

[0120] As shown in FIGS. 26 to 33, the hinge device X2 includes a first hinge 1 and a second hinge 2X.

[0121] In the hinge device X2, the first hinge 1 rotatably supports (pivotally supports) the swing door main body Y3 at the lower end Yb of the swing door main body Y3, as explained in FIG. 1 and FIG. In the hinge device X2, the first hinge 1 has the support shaft 3 and the bearing 4, similar to the configuration described with reference to FIGS.

[0122] The second hinge 2X (upper hinge) has a shaft guide body 11 and a shaft body 12, as shown in FIGS.

[0123] 26 to 33, the shaft guide body 11 is incorporated into the upper frame 63 with the upper end surface 11A of the shaft guide body 11 in the up-down direction UD facing the upper frame 53. The shaft guide body 11 is incorporated into and fixed to the upper frame 63 with a gap δB (second gap) between the upper end surface 11A of the shaft guide body 11 and the upper frame 53 in the up-down direction UD. The shaft guide body 11 is disposed in the internal space ε (insertion chamber ε1 and attachment chamber ε2) of the upper frame 63.

[0124] In the hinge device X2, the shaft guide body 11 has the shaft guide hole 15 and the shaft accommodation hole 16 (step portion 17) in the same manner as described with reference to FIGS.

[0125] In the hinge device X2, the shaft guide body 11 has a first guide member 81 and a second guide member 82, as shown in FIGS.

[0126] The first guide member 91 is made of metal, such as a zinc alloy, and has a base 83 (foundation) and a protruding piece 94, as shown in FIGS.

[0127] As shown in FIGS. 34 to 37, the base 83 is formed in a three-dimensional shape (rectangular parallelepiped) having a height HB in the up-down direction UD, a length LB in the left-right direction LR, and a width WB in the front-rear direction FR.

[0128] As shown in Figures 34 to 37, the base 83 has a protrusion 85, a first mounting hole groove 86 (mounting groove), a shaft guide hole groove 87 (guide groove), a second mounting hole groove 88 (mounting groove), a shaft storage hole groove 89 (storage groove), and multiple (four) screw holes 90 to 93.

[0129] As shown in Figures 34 to 37, the protrusion 85 is disposed at the longitudinal center of the base 83 in the left-right direction LR. The protrusion 85 is formed to protrude from the upper end surface 83A of the base 83 in the up-down direction UD by a protrusion amount LA. The protrusion 85 protrudes from the upper end surface 83A of the base 83 by a width WC in the left-right direction LR. The protrusion 85 is disposed between the side end surfaces 83C, 83D (front end surface 83C, rear end surface 83D) of the base 83 in the front-rear direction FR.

[0130] The first mounting hole groove 86 (first mounting groove) is formed in the first guide member 81. The first mounting hole groove 86 is disposed at the width center of the protrusion 85 (the length center of the base 83) in the left-right direction LR (the left-right direction LR of the base 83). The first mounting hole groove 86 has a hole groove flower Wα (hole width) in the left-right direction LR and is formed in the protrusion 85 (base 83).

[0131] 34 to 37, the first mounting hole groove 86 opens in the front-to-rear direction FR to one side end surface 85C (front end surface) of the protrusion 85 and one side end surface 83C (front end surface) of the base 83. The first mounting hole groove 86 is formed to extend from one side end surface 85C of the protrusion 85 toward the other side end surface 85D (rear end surface) in the front-to-rear direction FR.

[0132] 34 to 37, the first mounting hole groove 86 is formed in the protrusion 85, opening at an upper end surface 85A of the protrusion 85 in the up-down direction UD (the up-down direction UD of the base 83). The first mounting hole groove 86 has a hole groove length L1 from the upper end surface 85A of the protrusion 85 in the up-down direction UD, penetrates the protrusion 85, and is formed between the upper end surface 85A of the protrusion 85 and the lower end surface 83B of the base 83.

[0133] As shown in Figures 34 to 37, the shaft guide hole groove 87 (first guide hole groove) is formed in the convex portion 85 (base 83). The shaft guide hole groove 87 is disposed at the width center of the convex portion 85 (the length center of the base 83) in the left-right direction LR. The shaft guide hole groove 87 is disposed between the first mounting hole groove 86 and a side end surface 85D of the convex portion 85 (a side end surface 83D of the base 83) in the front-rear direction FR. The shaft guide hole groove 87 is formed in the convex portion 85 and the base 83, continuing from the first mounting hole groove 86 in the front-rear direction FR. The shaft guide hole groove 87 is connected to the first mounting hole groove 86 in the front-rear direction FR.

[0134] As shown in Figures 34 to 37, the shaft guide hole groove 87 is formed in a semicircular shape having a radius r1 that is the same as the radius r1 of the shaft guide hole 15. The shaft guide hole groove 87 opens to an upper end surface 85A of the convex portion 85 in the up-down direction UD, and is formed in the convex portion 85 and the base 83. The shaft guide hole groove 87 has a semicircular shape having a radius r1 and opens to the upper end surface 85A of the convex portion 85. The shaft guide hole groove 87 has a hole groove depth L1 from the upper end surface 85A of the convex portion 85 in the up-down direction UD, penetrates the convex portion 85, and is formed between the upper end surface 85A of the convex portion 85 and the lower end surface 83B of the base 83.

[0135] 34 to 37, the second mounting hole groove 88 (second mounting groove) is formed in the first guide member 81 in the front-to-rear direction FR. The second mounting hole groove 88 is disposed at the longitudinal center of the base 83 in the left-to-right direction LR. The second mounting hole groove 88 is formed in the base 83 and has a hole groove width Wβ in the left-to-right direction LR.

[0136] 34 to 37, the second mounting hole groove 88 opens in a side end surface 83C (front end surface) of the base 83 in the front-rear direction FR. The second mounting hole groove 88 is formed to extend from one side end surface 83C of the base 83 to the other side end surface 83D in the front-rear direction FR.

[0137] As shown in Figures 34 to 37, the second mounting hole groove 88 is disposed between the first mounting hole groove 86 and the lower end surface 83B of the base 83 in the up-down direction UD. The second mounting hole groove 88 is formed in the base 83 so as to be continuous with the first mounting hole groove 86 in the up-down direction UD. The second mounting hole groove 88 opens to the lower end surface 83B of the base 83 in the up-down direction UD. The second mounting hole groove 88 is widened in the left-right direction LR from the first mounting hole groove 86 via a step portion 88A.

[0138] As shown in Figures 34 to 37, the shaft storage hole groove 89 (first shaft storage hole groove) is formed in the base 83. The shaft storage hole groove 89 is disposed at the longitudinal center of the base 83 in the front-to-rear direction FR. The shaft storage hole groove 89 is disposed between the second mounting hole groove 88 and a side end surface 83D of the base 83 in the front-to-rear direction FR. The shaft storage hole groove 89 is formed in the base 83 so as to be continuous with the second mounting hole groove 88 in the front-to-rear direction FR. The shaft storage hole groove 89 is connected to the second mounting hole groove 88 in the front-to-rear direction FR.

[0139] As shown in Figures 34 to 37, the shaft storage hole groove 89 is arranged concentrically with the center line of the shaft guide hole groove 87 and is formed in a semicircular shape with a radius r2 that is the same as the radius r2 of the shaft storage hole 16. The shaft storage hole groove 89 is disposed between the shaft guide hole groove 87 and the lower end surface 83B of the base 83 in the up-down direction UD. The shaft storage hole groove 89 is formed in the base 83 so as to be continuous with the shaft guide hole groove 87 in the up-down direction UD. The shaft storage hole groove 89 opens to the lower end surface 83B of the base 83 in the up-down direction UD. The diameter of the shaft storage hole groove 89 is expanded from the shaft guide hole groove 87 via a step portion 89A. As shown in Figures 36 and 37 , the shaft storage hole groove 89 opens in the front-to-rear direction FR through a communication hole 111 to a side end surface 85D (rear end surface) of the base 83. The communication hole 111 has a hole width in the left-right direction LR that is smaller than the radius r2, and is formed between the side end surface 83D of the base 83 and the shaft storage hole groove 89. The communication hole 111 penetrates the base 83 in the front-to-rear direction FR and opens to the shaft storage hole groove 89 and the side end surface 83D of the base 83. The communication hole 111 extends in the up-down direction UD from the lower end surface 85B of the convex portion 85 to the lower end surface 83B of the base 83 and opens to the lower end surface 83B of the base 83.

[0140] As shown in Figures 34 to 37, the screw holes 90 to 93 are arranged at intervals in the left-right direction LR. Each of the screw holes 90, 91 is arranged between the side end surface 83E (right end surface) of the base 83 and the second mounting hole groove 88 in the left-right direction LR. Each of the screw holes 90, 91 is arranged at intervals from each other in the left-right direction LR. Each of the screw holes 92, 93 is arranged between the side end surface 83F (left end surface) of the base 83 and the second mounting hole groove 88 in the left-right direction LR. Each of the screw holes 92, 93 is arranged at intervals from each other in the left-right direction LR. The screw holes 90 to 93 penetrate the base 83 in the front-rear direction FR and open to the side end faces 83C and 83D of the base 83.

[0141] 34 to 37, the protruding piece 84 is formed in a plate shape. The protruding piece 84 has a plate front surface 84A and a plate back surface 84B in the plate thickness direction (vertical direction UD). The protrusion piece 84 is fixed (connected) to the base 83 (and the protrusion 85) with the plate surface 84A positioned flush with the upper end surface 85A of the protrusion 85. The protrusion piece 84 is fixed to the base 83 (and the protrusion 85) with the plate back surface 84B facing the lower end surface 83B of the base 83 in the up-down direction UD. The protrusion piece 84 is formed continuous with the protrusion 85 in the front-to-rear direction FR. The protrusion piece 84 is formed to protrude from the side end surface 85D of the protrusion 85 (the side end surface 85D of the base 83) in the front-to-rear direction FR.

[0142] In the hinge device X2, the second guide member 82 is made of metal, for example, a zinc alloy. As shown in Figures 34 and 38 to 40, the second guide member 82 has a cover base 94, a first protrusion 95, a shaft guide hole groove 96 (second shaft guide hole groove), a pair of left and right second protrusions 97, 98, a shaft storage hole groove 99 (second shaft storage hole groove), and a pair of left and right bolt holes 100, 101.

[0143] As shown in FIGS. 38 to 40, the lid base 94 is formed, for example, in the shape of a rectangular parallelepiped (three-dimensional shape) having a height HC in the up-down direction UD, a length LC in the left-right direction LR, and a width WC in the front-rear direction FR.

[0144] As shown in Figures 38 to 40, the first protrusion 95 is disposed on an upper end surface 94A of the lid base 94 in the up-down direction UD. The first protrusion 95 extends a length LQ (protrusion amount LQ) from the upper end surface 94A of the lid base 94 in the up-down direction UD. The first protrusion 95 has a protrusion width Wγ in the left-right direction LR and is fixed (connected) to the lid base 94. The first protrusion 95 protrudes a protrusion amount τ1 from a side end surface 94C (front end surface) of the lid base 94 in the front-rear direction FR.

[0145] As shown in FIGS. 38 to 40, the shaft guide hole groove 96 is formed in an arc shape having the same radius r1 as the radius r1 of the shaft guide hole 15. The shaft guide hole groove 96 is formed in the first protrusion 95. The shaft guide hole groove 96 penetrates the first protrusion 95 in the up-down direction UD and opens to an upper end surface 95A and a lower end surface 95B in the up-down direction UD of the first protrusion 95. The shaft guide hole groove 96 opens to the upper end surface 95A of the first protrusion 95 in an arc shape having a radius r1.

[0146] As shown in Figures 38 to 40, the shaft guide hole groove 96 has a hole groove length L1 (groove length) in the up-down direction UD. The shaft guide hole groove 96 is formed in the first protrusion 95, opening at a protruding end face 95C (front end face / front-side end face) of the first protrusion 95. The shaft guide hole groove 96 is formed in the first protrusion 95 in the front-rear direction FR, having a hole groove depth DA that is smaller than the radius r1 from the protruding end face 95C. The shaft guide hole groove 96 is formed in the first protrusion 95 at a protrusion center g of the first protrusion 95 in the left-right direction LR, recessed by the hole groove depth DA (maximum hole groove depth) from the protruding end face 95C of the first protrusion 95.

[0147] As shown in Figures 38 to 40, each of the second protrusions 97, 98 is disposed on a side end surface 94C of the lid base 94. The second protrusion 97 (right-side second protrusion 97) is disposed between the first protrusion 95 and one side end surface 94E (right-side end surface) of the lid base 94 in the left-right direction LR, at a distance δB from the longitudinal center g of the lid base 94. The second protrusion 97 is disposed adjacent to the first protrusion 95 in the left-right direction LR. The second protrusion 98 (left second protrusion 98) is disposed in the left-right direction LR at a distance δB from the longitudinal center g of the lid base 94, between the first protrusion 95 and the other side end face 94F (left end face) in the left-right direction LR of the lid base 94. The second protrusion 98 is disposed adjacent to the first protrusion 95 in the left-right direction LR.

[0148] 38 to 40, each of the second protrusions 97, 98 is disposed in the up-down direction UD between the first protrusion 95 (the lower end surface 95B of the first protrusion 95) and the lower end surface 94B of the lid base 94. Each of the second protrusions 97, 98 is continuous with the first protrusion 95 and extends to the lower end surface 94B of the lid base 94 in the up-down direction UD. Each of the second protrusions 97, 98 protrudes from a side end surface 94C (front end surface) of the lid base 94 in the front-rear direction FR by a protrusion amount τ1.

[0149] As shown in Figures 38 to 40, the shaft storage hole grooves 99 are formed in the lid base 94 between the second protrusions 97, 98 and between the second protrusions 97, 98 in the left-right direction LR. The shaft storage hole grooves 99 are formed in the up-down direction UD between the lower end surfaces 95B of the first protrusions 95 and the lower end surface 94B of the lid base 94. The shaft storage hole grooves 99 are formed in the front-rear direction FR from the protruding end surfaces 97A, 98A of the second protrusions 97, 98 to the lid base 94 between the second protrusions 97, 98 and between the second protrusions 97, 98, with a hole groove depth DB (groove depth) that is smaller than the radius r2. The shaft storage hole groove 99 is recessed from the protruding end faces 97A, 98A at the longitudinal center g of the lid base 94 with a hole groove depth DB, and is formed in the lid base 94 between each of the second protrusions 97, 98 and between each of the second protrusions 97, 98.

[0150] As shown in Figures 38 to 40, the shaft storage hole groove 99 is arranged concentrically with the hole center line of the shaft guide hole groove 96 and is formed in an arc shape having a hole groove radius r2 (radius r2) that is the same as the radius r2 of the shaft storage hole 16.

[0151] As shown in Figures 38 to 40, the bolt holes 100, 101 are formed in the lid base 94. The bolt hole 100 is disposed between a side end surface 94E (right end surface) of the lid base 94 and the second protrusion 97 in the left-right direction LR. The bolt hole 101 is disposed between a side end surface 94F (left end surface) of the lid base 94 and the second protrusion 98 in the left-right direction LR. The bolt holes 100, 101 penetrate the lid base 94 in the front-rear direction FR and open to the respective side end faces 94C, 94D (front end face / rear end face) of the lid base 94.

[0152] In the second hinge 2X (hinge device X2), the shaft body 12 has the shaft main body 6 and the flange 7, similar to the configuration described with reference to FIGS. In the second hinge 2X (hinge device X2), the shaft body 12 has, for example, a shaft fixing plate 8, a shaft main body 6 (shaft core member 9, sleeve 10), and a flange 7, similar to that shown in FIGS.

[0153] In Figures 26 to 33 and 41 to 45, the hinged door body Y3 is rotatably supported on the door frame Y1 (upper frame 53) and the floor surface G by the first hinge 1 (support shaft 3 and bearing 4) and the second hinge 2X [first guide member 81, second guide member 82 (shaft guide body 11) and shaft body 12 (shaft body 6 and shaft fixing plate 8)].

[0154] 41 to 43, the first guide member 81 of the shaft guide body 11 is incorporated into the upper frame 63. The first guide member 81 is disposed in the internal space ε (mounting chamber ε2) of the upper frame 63. The first guide member 81 is disposed with the upper end surface 85A of the convex portion 85 (the upper end surface 83A of the base 83) facing upward. The first guide member 81 is incorporated into the upper frame 63 with the side end surface 83C of the base 83 facing the front panel 69 (horizontal insertion hole 74) in the front-rear direction FR of the upper frame 63. The first guide member 81 is disposed in the left-right direction LR at a distance δ3 (third distance) between the center line of the shaft guide hole groove 87 (shaft storage hole groove 89) and the vertical frame 62. The first guide member 81 is disposed such that the left-right direction LR of the base 83 faces the left-right direction LR of the upper frame 63. The first guide member 81 is inserted into the mounting hole 73 of the upper frame 63 from the lower end surface 83B of the base 83, and is disposed in the mounting chamber ε2 (internal space ε) of the upper frame 63. The first guide member 81 is assembled to the upper frame 63 in the up-down direction UD by inserting the base 83 from the upper plate 67 of the upper frame 63 into the mounting hole 73, and disposing the base 83 in the mounting chamber ε2. In the first guide member 81, the base 83 is inserted into the mounting hole 73 from the lower end surface 83B, and is disposed in the mounting chamber ε2 of the upper frame 63 from the mounting hole 73. When the first guide member 81 is inserted into the mounting hole 73 of the base 83, the protrusion piece 84 (back surface of the plate 84B) abuts against the upper plate 67 (upper end surface Ya of the swing door main body Y3) of the upper frame 63, and is positioned in the mounting chamber ε2 of the upper frame 63 (assembled into the mounting hole ε2).

[0155] As shown in Figures 41 to 43, the first guide member 81 is assembled into the upper frame 63 by abutting the protrusion piece 84 against the upper plate 67 (the upper end surface Ya of the hinged door main body Y3), with the first mounting hole groove 86, the second mounting hole groove 88 and each screw hole 91, 93 facing the lateral insertion hole 74 (positioned inside the lateral insertion hole 74). When the protruding piece 84 abuts against the upper plate 67, the first and second mounting hole grooves 86, 88 and the screw holes 91, 93 communicate with the insertion chamber ε1 through the horizontal insertion hole 74. The base 83 is positioned in the mounting chamber ε2 in the left-right direction LR, with the side end face 83C (front end face) between the lateral insertion hole 74 and the side end face 83E (right end face) and the side end face 83C (front end face) between the lateral insertion hole 74 and the side end face 83F (left end face) abutting against the first partition plate 71.

[0156] As shown in Figures 41 to 43, the first guide member 81 is assembled into the upper frame 63 by abutting the protrusion 84 against the upper plate 67 (the upper end surface Ya of the hinged door main body Y3) so that each screw hole 90, 92 faces (communicates with) each bolt hole 76, 77.

[0157] As shown in FIGS. 41 to 43, the first guide member 81 is assembled into the upper frame 63 with the protruding portion 85 projecting between the upper plate 67 of the upper frame 63 and the upper frame 53 when the protruding piece 84 abuts against the upper plate 67. As the protrusion piece 84 abuts against the upper plate 67, the protrusion portion 85 protrudes from the upper plate 67 in the vertical direction UD, with a gap δB between the upper end surface 85A of the protrusion piece 85 (plate surface 84A of the protrusion piece 84) and the upper frame 53, and is positioned between the upper plate 67 (upper end surface Ya of the swing door main body Y3) of the upper stile 63 and the upper frame 53.

[0158] As shown in FIG. 42, when the base 83 is placed in the mounting chamber ε2, the first guide member 81 is fixed to the upper frame 63 by a pair of bolts 102. Each bolt 102 is inserted into each bolt hole 76, 77 from the screw shaft 102A, and the screw shaft 102A is screwed into each screw hole 90, 92 of the base 83 in the mounting chamber ε2, and is placed inside the upper frame 63. Each bolt 102 abuts the bolt head 102B against the first partition plate 71. When each bolt 102 is rotated, the screw shaft 102A is threaded into each screw hole 90, 92, and the bolt head 102B comes into contact with the first partition plate 71 from the insertion chamber ε1, thereby fixing the first guide member 81 to the upper frame 63.

[0159] The shaft body 12 of the hinge device X2 is fixed to the upper frame 53 of the door frame Y1 in the same manner as described in FIG. 21 (see FIG. 21).

[0160] As shown in Figures 26 and 27, the swing door main body Y3 to which the first guide member 81 is fixed is rotatably supported by the first hinge 1 (support shaft 3 and bearing 4) within the opening Z of the door frame Y1 by inserting the support shaft 3 of the first hinge 1 into the bearing hole 5 of the bearing 5. The hinged door body Y3 to which the first guide member 81 is fixed has the support shaft 3 inserted into the bearing hole 5, the shaft body 6 (shaft core material 9 and sleeve 10) of the shaft body 12 fixed to the upper frame 53 inserted into the shaft guide hole groove 87 and shaft storage hole groove 89 of the first guide member 81, and the flange 7 inserted into the shaft storage hole groove 89 of the first guide member 81. 44 and 45, as the hinged door body Y2 with the support shaft 3 inserted in the bearing hole 5 moves in the front-to-rear direction FR, the shaft body 6 (shaft core member 9 and sleeve 10) and flange 7 are inserted into the horizontal insertion hole 74 and vertical insertion hole 75 of the upper frame 63 and positioned in the insertion chamber ε1, and are inserted from the insertion chamber ε1 into the shaft guide hole groove 87 and the shaft storage hole groove 89 through the first and second mounting holes 86, 88 of the base 83. The flange 7 is positioned with a portion located on the side end face 83D of the base 83 (part of the flange 7) inserted into the communicating hole 111 from the shaft storage hole groove 89.

[0161] When the shaft body 6 and flange 7 of the shaft body 12 fixed to the upper frame 53 are inserted (placed) into the shaft guide hole groove 87 and shaft storage hole groove 89 of the first guide member 81 fixed to the hinged door body Y3, the second guide member 82 of the shaft guide body 11 is fixed to the first guide member 81.

[0162] 28 to 33, the second guide member 82 is arranged in the front-rear direction FR such that a side end surface 94C (front end surface) of the lid base 94 faces a side end surface 83C (front end surface) of the base 83 in the mounting chamber ε2, and the left-right direction LR of the lid base 94 faces the left-right direction LR of the upper frame 63. The second guide member 82 is arranged such that an upper end surface 95A of the first protrusion 95 faces the upper frame 53.

[0163] As shown in Figures 28 to 33, the second guide member 82 is assembled to the upper frame 63 by inserting the cover base 94 into the horizontal insertion hole 74 of the front plate 69 and arranging it in the insertion chamber ε1. The second guide member 82 is assembled to the upper frame 63 by inserting the first protrusion 95 from the front plate 69 into the vertical insertion hole 75 and arranging it in the insertion chamber ε1. The second guide member 82 is arranged in the first guide member 81 in the mounting chamber ε2 in the front-to-rear direction FR by press-fitting (inserting) the first protrusion 95 from the side end surface 83C (side end surface 85C of the convex portion 85) of the base 83 in the mounting chamber ε2 into the first mounting hole groove 86 of the first guide member 81 and press-fitting (inserting) each of the second protrusions 97, 98 into the second mounting hole groove 88 of the first guide member 81.

[0164] As shown in FIGS. 31 to 33, the first protrusion 95 is press-fitted (inserted) in the front-rear direction FR from the insertion chamber ε1 through the vertical insertion hole 75 into the first mounting hole groove 86 of the base 83 in the mounting chamber ε2. Each of the second protrusions 97, 98 is press-fitted (inserted) in the front-rear direction FR from the insertion chamber ε1 through the lateral insertion hole 74 into the second mounting hole groove 88 of the base 83 in the mounting chamber ε2.

[0165] As shown in Figures 31 to 33, the second guide member 82 has the upper end surface 95A of the first protrusion portion 95 protrude from the upper plate surface 67A (upper end surface Ya of the swing door main body Y3) of the upper plate 67 between the upper plate 67 and the upper frame 53 in the vertical direction UD, and the first protrusion portion 95 is pressed (inserted) into the first mounting hole groove 86. The first protrusion 95 is press-fitted (inserted) into the first mounting hole groove 86 with its upper end surface 95A positioned flush with the upper end surface 85A of the convex portion 85. The first protrusion 95 protrudes from the upper plate 67 with a distance δB between the upper end surface 95A of the first protrusion 95 and the upper frame 53 in the up-down direction UD, and is positioned between the upper plate 67 (upper end surface Ya of the swing door main body Y3) of the upper stile 63 and the upper frame 53.

[0166] As shown in Figure 32, as the first protrusion 95 is pressed into the first mounting hole groove 86 and each second protrusion 97, 98 is inserted into the second mounting hole groove 88, the side end surface 94C (front end surface) of the lid base 94 abuts against the side end surface 83C (front end surface) of the base 83 in the mounting chamber ε2 from the lateral insertion hole 74, and the second guide member 82 is fixed to the first guide member 81 by a pair of bolts 103.

[0167] As shown in Figures 32 and 33, the screw shaft 103A of each bolt 103 is inserted into the respective bolt holes 100, 101 of the second guide member 82 (lid base 94) and screwed into the respective screw holes 91, 93 of the first guide member 81 (base 83), and the bolt head 103B abuts (presses against) the side end surface 94D (rear end surface) of the lid base 94, thereby fixing the second guide member 82 to the first guide member 81 within the upper frame 63 (internal space ε).

[0168] As shown in Figures 31 to 33, when the first protrusion 95 is press-fitted into the first mounting hole groove 86 and the second protrusions 97, 98 are press-fitted into the second mounting hole groove 88 of the first and second guide members 81, 82, the shaft guide hole grooves 87, 97 (the shaft guide hole grooves 87, 97 and the first mounting hole groove 86) form the shaft guide hole 15 of the shaft guide body 11, the shaft storage hole grooves 89, 99 (the shaft storage hole grooves 89, 90 and the second mounting hole groove 88) form the shaft storage hole 16 of the shaft guide body 11, and the step 89A (step 88A) of the first guide member 81 and the lower end surface 95B of the first protrusion 95 form the step 17 of the shaft guide body 11. In the first and second guide members 81 and 82, the upper end surface 85A of the convex portion 85 and the upper end surface 95A of the first protrusion 95 become the upper end surface 11A of the shaft guide body 11.

[0169] In Figures 31 to 33, the shaft body 6 of the hinge device X2 is arranged with a gap between the outer peripheral surface 10a of the sleeve 10 (outer peripheral surface 6a of the shaft body 6) and the hole groove peripheral surface (groove peripheral surface) of each shaft guide hole groove 87, 96 (hole peripheral surface of the shaft guide hole 15 of the shaft guide body 11), and passes through each shaft guide hole groove 87, 96 (shaft guide hole 15), with the other shaft end 9B side of the shaft core material 9 (the other shaft end 9B side of the shaft body 6) protruding from each shaft guide hole groove 87, 96 (shaft guide hole 15) to each shaft storage hole groove 89, 99 (shaft storage hole 16). In the hinge device X2 (second hinge 2X), the shaft body 6 passes through the shaft guide hole 15 of the shaft guide body 11 which is fixed to the upper frame 63 and allows the swing door body Y3 to move freely in the vertical direction UD and rotate freely, and the other shaft end 6B side is positioned so as to protrude from the shaft guide hole 15 into the shaft storage hole 16. In the hinge device X2 (second hinge 2X), the shaft body 6 allows the shaft guide body 11 (shaft guide body 11 fixed to the swing door body Y3) to move freely in the up and down direction UD together with the swing door body Y3, and allows the shaft guide body 11 (shaft guide body 11 fixed to the swing door body Y3) to rotate freely together with the swing door body Y3, and is arranged so that the other shaft end 6B side protrudes from the shaft guide hole 15 into the shaft storage hole 16.

[0170] 32 and 33, the flange 7 of the hinge device X2 protrudes radially from the outer peripheral surface 10a of the sleeve 10 of the shaft body 6 (the outer peripheral surface 6a of the shaft body 6) and is disposed between the peripheral surfaces of the shaft guide hole grooves 87, 96 (the peripheral surfaces of the shaft guide holes 15) and the peripheral surfaces of the shaft storage hole grooves 89, 99 (the peripheral surfaces of the shaft storage holes 16). The flange 7 is disposed in each of the shaft storage hole grooves 89, 99 (shaft storage holes 16) with a gap between it and the step portion 89A (step portion 88A) and the lower end surface 95B (step portion 17) of the first protrusion 95 in the up-down direction UD. The flange 7 is disposed in each of the shaft storage hole grooves 89, 99 (shaft storage holes 16) with a gap between it and the plate surface 7A and the step portion 89A (step portion 88A) and the lower end surface 95B (step portion 17) of the first protrusion 95 in the up-down direction UD. The flange 7 is disposed in each of the shaft storage hole grooves 89, 99 (shaft storage holes 16) with a distance δC between it and the lower end surface 83B (upper plate surface 67A of the upper plate 67) of the base 83 in the up-down direction UD. The flange 7 is disposed in each of the shaft storage hole grooves 89, 99 (shaft storage holes 16) with a distance δD between the plate back surface 7B and the lower end surface 83B (lower plate 68 of the upper frame 63) of the base 83 in the up-down direction UD. The flange 7 is disposed in each of the shaft storage hole grooves 89, 99 (shaft storage holes 16) with a gap between the outer circumferential surface 7a of the flange 7 and the peripheral surface of each of the shaft storage hole grooves 89, 99 (the peripheral surface of the shaft storage hole 16) in the radial direction of the shaft body 6. The flange 7 is arranged within each shaft storage hole groove 89, 90 (within the shaft storage hole 16) so as to be able to freely abut against the step portion 89A (step portion 89A) and the lower end surface 95B (step portion 17) of the first protrusion portion 95 from within each shaft storage hole groove 89, 99 (within the shaft storage hole 16).

[0171] 26 and 27, the hinged door body Y3 rotates relative to the door frame Y1 around the rotation center line a (axial center line of the support shaft 3) of the first hinge 1 and the axial center line of the shaft body 6 of the second hinge 2X as the rotation center, thereby opening and closing the opening Z of the door frame Y1. The hinged door body Y3 is guided (supported) by the support shaft 3 and bearing 4 (bearing hole 5) of the first hinge 1, and is guided (supported) by the shaft body 6 and shaft guide body 11 (shaft guide hole 15) of the second hinge 2X, and rotates around the rotation center line a. The hinged door body Y3 is rotatable relative to the shaft body 12 by the second hinge 2X (the shaft guide body 11 and the shaft body 12) and is movable in the up and down direction UD.

[0172] As shown in Figure 46, when the swing door body Y3 moves downward in the vertical direction UD (to the floor surface G) due to a disaster such as an earthquake, the hinge device X2 causes the flange 7 (plate surface 7A) of the shaft body 12 to abut against the step portion 17 [step portion 89A (step portion 88A) and the lower end surface 95B of the first protrusion portion 95] of the shaft guide body 11, preventing the shaft body 6 from coming out of the shaft guide body 11 (shaft guide hole 15, shaft storage hole 16), and preventing the swing door body Y3 from coming off the door frame Y1 and falling over. The hinged door body Y3 is guided by the shaft guide hole 15 of the shaft guide body 11 of the second hinge 2X and the shaft body 6 of the shaft body 12, and is moved downward in the up-down direction UD.

[0173] As shown in Figure 47, when the hinge door body Y3 moves upward in the vertical direction UD (towards the upper frame 53) relative to the door frame Y1, the back surface 7B of the plate of the flange 7 of the shaft body 12 (the other shaft end 6B of the shaft body 6) abuts against the lower plate 68 of the upper frame 63, preventing the shaft body 6 from coming out of the shaft guide body 11 (shaft guide hole 15, shaft storage hole 16). [Industrial Applicability]

[0174] The present invention is ideal for supporting the hinged door body of a hinged door so that it can rotate freely. [Explanation of symbols]

[0175] X1, hinge device Y-swing door Y1 Door Frame Y2 swing door body Ya Upper end surface of swing door body Yb Bottom end of swing door body 51,52 Vertical frame (vertical frame material) Z Door frame opening 1 First hinge a Rotation center line (axial center line of support shaft) 6-axis body 7 Flange (flange part) 11 Shaft guide body 12 shaft body 15 Shaft guide hole 16 Axis storage hole 17 Annular step 51,52 Vertical frame (vertical frame material) 53 Upper frame (upper frame material)

Claims

[Claim 1] a hinge device for rotatably supporting a swing door body in a swing door comprising a pair of left and right vertical frames and an upper frame disposed on the upper end sides of the vertical frames and spanning between the vertical frames, the door frame having an opening formed inside the vertical frames and the upper frames, and a swing door body for opening and closing the opening in the door frame, the swing door body being disposed in the opening with a gap between an upper end surface of the swing door body and the upper frames and a gap between a lower end surface of the swing door body and a floor surface, a first hinge having a rotation center line in the vertical direction, disposed between the bottom end surface of the swing door body and the floor surface, and rotatably supporting the swing door body; a second hinge disposed between the upper frame and the upper end surface of the hinged door body, the second hinge having a shaft guide and a shaft; The shaft guide body is The door frame is provided with a hinged door body and a lower end surface of the shaft guide body that is in contact with the upper end surface of the hinged door body. a shaft guide hole that is disposed concentrically with the rotation center line of the first hinge, that opens to the upper end surface of the shaft guide body, and that is formed between the upper end surface and the lower end surface of the shaft guide body; a shaft accommodation hole formed between the shaft guide hole and the lower end surface of the shaft guide body, the diameter of which is enlarged from the shaft guide hole via an annular step portion, The shaft body is a shaft body that is arranged concentrically with the center line of the shaft guide hole and is fixed to the upper frame with one shaft end facing the upper frame; a flange disposed in the shaft receiving hole, The shaft body is the door body is movable in the vertical direction and rotatable, and the shaft guide hole of the shaft guide body is fixed to the door body, and the other shaft end side is disposed so as to protrude from the shaft guide hole into the shaft storage hole, The flange is a shaft receiving hole provided on the shaft body at the other shaft end side, protruding radially from the outer circumferential surface of the shaft body and disposed between the hole circumferential surface of the shaft guide hole and the hole circumferential surface of the shaft receiving hole, the shaft receiving hole is disposed at a distance from the step portion and at a distance from the lower end surface of the shaft guide body in the vertical direction, A gap is provided between the shaft receiving hole and the peripheral surface of the shaft receiving hole. A hinge device for a swing door characterized by the above.

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