Door structure

Abstract

To provide a door structure excellent in sound insulation.SOLUTION: The door structure includes a frame body having a door end side vertical frame 5, and a door body 2 rotatably connected to the frame body, and the door end side vertical frame 5 has a side face part 51 extending to the D2 in the frame thickness direction. The door body 2 has a door tail-side end surface D4 that extends toward the B1 in the door thickness direction, and an opening-side corner B1 that extends from an opening-side side edge B1a of the door tail-side end surface B2. A gap G is provided between the door body 2 and the door tail-side vertical frame 5 at the width-direction D1 portion of the frame body regardless of the rotation angle of the door body 2. When the door body 2 is in the fully closed position, the gap G is defined by the door tail-side end surface B1 of the door body 2 and the side surface portion 51 of the door tail-side vertical frame 5, which face each other, and the size of the gap G is 2. 0mm to 7. 0mm.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a door structure consisting of a hinged door. [Background technology]

[0002] Finger trapping accidents in swing doors occur when a finger gets caught between the door and the door frame when the door is opened or closed, and various door structures have been proposed to prevent such finger trapping accidents. For example, in Patent Document 1, a semicircular bulge is provided on the door's hanging side, and the gap between the bulge and the step in the door frame is kept constant even when the door is opened or closed. In addition, in Patent Document 2, a quarter-circular curved portion provided on the edge of the door faces a protrusion provided on the vertical frame on the trailing edge of the door frame, regardless of the door's rotation angle. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-209881 [Patent Document 2] Japanese Patent Application Publication No. 2023-1879 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the configurations disclosed in Patent Documents 1 and 2, sound tends to leak between the trailing edge of the door and the door frame when the door is in the fully closed position, which poses a problem in sound insulation.

[0005] The present invention aims to provide a door structure with excellent sound insulation properties. [Means for solving the problem]

[0006] The door structure according to the present invention comprises a frame body having a trailing edge vertical frame, and a door body rotatably connected to the frame body between a fully open position and a fully closed position, the trailing edge vertical frame having a side portion extending in a frame thickness direction, which is the thickness direction of the frame body, the side of the door body moving from the fully closed position to the fully open position being the open side, the door body having a trailing edge end face extending in the door thickness direction, which is the thickness direction of the door body, and an open side corner portion extending from the open side edge of the trailing edge end face, a gap is provided between the door body and the trailing edge vertical frame in the width direction of the frame body regardless of the rotation angle of the door body, and when the door body is in the fully closed position, the gap is defined by the trailing edge end face of the door body and the side portion of the trailing edge vertical frame, which face each other, and the dimension of the gap is 2.0 mm to 7.0 mm.

[0007] It is preferable that the frame body further has a vertical frame on the leading edge side, the vertical frame on the leading edge side having a first open side portion, and the vertical frame on the trailing edge side further has a crank-shaped second open side portion located on the open side of the side portion, and that the first open side portion and the second open side portion are formed symmetrically with respect to an axis. [Effects of the Invention]

[0008] According to the door structure of the present invention, when the door body is in the fully closed position, the trailing edge of the door body and the side of the trailing edge vertical frame face each other, and a gap is defined by the facing trailing edge of the door body and the side of the trailing edge vertical frame, so that the gap has a predetermined length in the door thickness direction. This makes it difficult for sound to leak through the gap, improving the sound insulation of the entire door structure. Furthermore, the gap dimension is small, at 2.0 mm to 7.0 mm, which also improves the sound insulation of the door structure.

[0009] Furthermore, the first open side portion of the leading vertical frame and the second open side portion of the trailing vertical frame are formed symmetrically with respect to a line, which improves the appearance of the entire door structure. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a front view of a door structure according to an embodiment of the present invention. [Figure 2]Cross-sectional view of line II-II in Figure 1. [Figure 3] Enlarged view of the main part of Figure 2. [Figure 4] 2A to 2C are diagrams illustrating how the door body of the door structure shown in FIG. 1 opens and closes. DETAILED DESCRIPTION OF THE INVENTION

[0011] A door structure according to an embodiment of the present invention will be described below with reference to the accompanying drawings. Referring to Figs. 1 and 2, the door structure 1 according to this embodiment comprises a door body 2 as a hinged door and a frame body 3, and the door body 2 is attached to the frame body 3 so as to be rotatable about an axis C. The frame body 3 comprises a pair of vertical frames 4, 5 (a leading-end vertical frame 4 and a trailing-end vertical frame 5) extending in a height direction D3, and an upper frame 6 and a lower frame 7 connecting the vertical frames 4, 5 and extending in a width direction D1 of the frame body 3 (hereinafter referred to as the "frame width direction"). An opening 30 is defined by these vertical frames 4, 5, upper frame 6, and lower frame 7.

[0012] The door body 2 can rotate about an axis C extending in the height direction D3 between a fully closed position shown in FIGS. 2 and 4(a) and a fully open position shown in FIG. 4(g), and the opening 30 is opened and closed by this rotation. In the following description, with reference to FIG. 2, one side in the thickness direction (hereinafter referred to as the "frame thickness direction") D2 of the frame body 3, which is the side toward which the door body 2 rotates to open, is referred to as the "open side," and the opposite side to the open side is referred to as the "closed side." The fully closed position is the position of the door body 2 in a state in which the opening 30 of the frame body 3 is closed, and the fully open position is the position where the door body 2 is rotated to the open side to its maximum extent. In this embodiment, the opening and closing angle of the door body 2 is set to approximately 90°.

[0013] 2 and 3, the door body 2 has a planar front surface F and a planar back surface R that face each other in the thickness direction D4 of the door body 2 (hereinafter referred to as the "door thickness direction"), and a leading edge S and a trailing edge B that face each other in the width direction D5 of the door body 2 (hereinafter referred to as the "door width direction") The trailing edge B has a trailing edge B1, an opening corner B2 extending from an opening edge B1a of the trailing edge B1, and a closing corner B3 extending from a closing edge B1b of the trailing edge B1.

[0014] The trailing edge B1 extends linearly in the door thickness direction D4, connecting the opening corner B2 and the closing corner B3. The opening corner B2 is continuous with the front surface F, is located closer to the opening side than the trailing edge B1, and extends diagonally in a straight line in the door width direction D5 (toward the door leading edge) as it extends outward (toward the opening side) in the door thickness direction D4. The closing corner B3 is continuous with the back surface R, is located closer to the closing side than the trailing edge B1, and extends diagonally in a straight line in the door width direction D5 (toward the door leading edge) as it extends outward (toward the closing side) in the door thickness direction D4.

[0015] Here, the angle α1 formed by the opening corner B2 with respect to the front surface F, the angle α2 formed by the trailing edge B1 with respect to the opening corner B2, the angle α3 formed by the closing corner B3 with respect to the trailing edge B1, and the angle α4 formed by the closing corner B3 with respect to the back surface R are all set to 135° (α1 = α2 = α3 = α4 = 135°).

[0016] The door body 2 also includes a core material 20, a leading-side frame material 21 and a trailing-side frame material 22 that extend along the height direction D3 (FIG. 1), and surface materials 23 and 24 that cover the core material 20 and the frame materials 21 and 22. The trailing-side frame material 22 has an opening-side frame portion 22a that extends along the door width direction D5, a connecting frame portion 22b that extends in the door thickness direction D4 from the leading-side end of the opening-side frame portion 22a toward the closing side, a closing-side frame portion 22c that extends in the door width direction D5 from the closing-side end of the connecting frame portion 22b toward the trailing side, and an inclined frame portion 22d that extends diagonally in a straight line toward the trailing side from the trailing-side end of the closing-side frame portion 22c toward the opening side, and is formed into a generally C-shaped cross section that defines an opening 22e between the opening-side frame portion 22a and the inclined frame portion 22d.

[0017] The surface materials 23 and 24 are, for example, steel plates, and the surface material 23 covers at least the core material 20 from the closed side and also covers the inclined frame portion 22d. The surface material 24 covers at least the core material 20 from the open side and also covers the opening 22e of the frame material 22, and the tip of the surface material 24 is overlapped and joined to the tip of the surface material 23 on the inclined frame portion 22d.

[0018] That is, of the trailing edge end B of the door body 2, the trailing edge end face B1 and the open corner B2 are formed by a surface material 24 that covers the opening 22e of the frame material 22 in an approximately L-shaped cross section, and the closed corner B3 is formed by surface materials 23, 24 that cover the inclined frame portion 22d.

[0019] Referring to Figure 2, the door-end vertical frame 4 is made up of a plate-like member bent into a stepped cross section, and has a crank-shaped middle portion 41, a crank-shaped open side portion (first open side portion) 42 located on the open side of the middle portion 41, and a crank-shaped closed side portion 43 located on the closed side of the middle portion 42, and a resin airtight material 44 is attached to the closed side portion 43.

[0020] The open side portion 42 has a flat portion 421 extending outward from the open side edge 41a of the middle portion 41 in the frame width direction D1, and a hook-shaped (L-shaped) crank portion 422 provided continuously with the flat portion 421.

[0021] The trailing edge vertical frame 5 is made of a plate-like member bent into a stepped cross section, and has a side portion 51 extending flat along the frame thickness direction D2, a crank-shaped opening side portion (second opening side portion) 52 located on the opening side of the side portion 51, and a crank-shaped closing side portion 53 located on the closing side of the side portion 51. The opening side portion 52 is symmetrical to the opening side portion 42 of the leading edge vertical frame 4, and has a flat portion 521 extending outward in the frame width direction D1 from the opening side edge 51a of the side portion 51, and a hook-shaped (L-shaped) crank portion 522 provided contiguous to the flat portion 521.

[0022] In addition, a resin airtight material 54 is attached to the closing side portion 53. Note that the airtight material 54 is omitted in Fig. 3. The airtight material 54 has a C-shaped cross section and extends over the entire height direction D3 (Fig. 1) of the trailing edge vertical frame 5. When the door body 2 is in the fully closed position, the airtight material 54 is in pressure contact with the back surface R of the door body 2 (Fig. 4(a)), and when the door body 2 is in the fully open position, the airtight material 54 is in pressure contact with the connection between the back surface R of the door body 2 and the closing side corner B3 (Fig. 4(g)).

[0023] As shown in FIG. 4 , a gap G is formed between the door element 2 and the side surface 51 of the trailing-edge vertical frame 5 regardless of the rotation angle of the door element 2. Here, the gap G is the minimum gap between the door element 2 and the trailing-edge vertical frame 5 in the width direction D1 of the frame 3, and changes as the door element 2 rotates. Furthermore, regardless of the rotation angle of the door element 2, the side surface 51 of the trailing-edge vertical frame 5 directly faces the door element 2. Here, "directly facing" means that the side surface 51 and the door element 2 face each other without any intervening member. That is, in this embodiment, the side surface 51 does not have a protrusion that protrudes toward the door element 2, and the entire gap G between the door element 2 and the side surface 51 of the trailing-edge vertical frame 5 remains open to the open side regardless of the rotation angle of the door element 2.

[0024] When the door body 2 is in the fully closed position shown in FIG. 4(a), the side surface 51 of the trailing edge vertical frame 5 faces the trailing edge end face B1 of the door body 2, and a gap G is defined between the side surface 51 and the trailing edge end face B1. From the viewpoint of sound insulation, it is preferable that the dimension of the gap G at this time be as small as possible. On the other hand, if the dimension of the gap G is too small, the door body 2 may rub against or come into contact with the door frame 3 when opening or closing the door body 2 or due to installation errors. Therefore, in this embodiment, the dimension of the gap G when the door body 2 is in the fully closed position is set to 3.5 mm.

[0025] 3, the angle β1 formed by the straight line L1 passing through the axis C and the opening-side edge B1a of the trailing edge B1 (i.e., the intersection of the trailing edge B1 and the opening-side corner B2) with respect to the door width direction D5 is set to 7.5°. As a result, the dimension of the gap G when the door body 2 is in the fully closed position (FIG. 4(a)) matches the dimension of the gap G when the door body 2 is opened 15° (FIG. 4(b)). In addition, the axis C (the rotation center of the door body 2) is positioned on the opening side of the center in the door thickness direction D4, and is also positioned on the opening side of the center of the trailing edge B1 in the door thickness direction D4.

[0026] Furthermore, the distance L2 from the axis C to the trailing edge B1 is set to 25 mm, and the distance L3 from the axis C to the surface F of the door body 2 is set to 13 mm. As a result, the dimensions of the gap G when the door body 2 is in the 30° open position (Fig. 4(c)), 45° open position (Fig. 4(d)), 60° open position (Fig. 4(e)), 75° open position (Fig. 4(f)), and fully open position (Fig. 4(f)) are 5.2 mm, 8.5 mm, 9.6 mm, 12 mm, and 15.5 mm, respectively.

[0027] Next, we will explain the effect of opening the door 2. First, when the door 2 is in the fully closed position shown in Figure 4(a), the dimension of the gap G is only 3.5 mm, so the fingertip will not get caught in the gap G, and therefore there will be no finger-trapping accident.

[0028] Furthermore, when the door body 2 is opened from this position (rotated toward the open side around the axis C), a gap G is defined between the side surface 51 of the trailing edge vertical frame 5 and the open-side edge B1a of the trailing edge B1. The size of the gap G gradually decreases as the door body 2 opens, reaching a minimum when the door is opened by β1 = 7.5°, and then gradually increases. When the door is opened by 15° (= β1 × 2) as shown in Figure 4(b), the size of the gap G is the same as the size of the gap G in the fully closed position. That is, the size of the gap G is 3.5 mm. Thus, from the fully closed position to the 15° open position, the size of the gap G is maintained at 3.5 mm or less, preventing fingertips from getting caught in the gap G.

[0029] Thereafter, when the door body 2 is further opened (rotated toward the open side), the size of the gap G gradually increases, and the size of the gap G is maximum in the fully open position shown in Fig. 4(g). In the state where the door is opened 45° as shown in Fig. 4(d), the side surface portion 51 of the trailing edge vertical frame 5 and the open-side corner B2 are parallel, and in the fully open position as shown in Fig. 4(g), the side surface portion 51 of the trailing edge vertical frame 5 and the surface portion F of the door body 2 are parallel.

[0030] In this way, the size of the gap G increases as the door body 2 rotates from the 15° open position to the fully open position. Therefore, even if a fingertip gets into the gap G, the fingertip will not be pinched between the door body 2 and the vertical frame 5 on the trailing edge side, thereby preventing the occurrence of finger-trapping accidents.

[0031] Next, we will explain the effect of closing the door body 2. First, in the process of the door body 2 rotating from the fully closed position (Fig. 4(g)) to the 45° open position (Fig. 4(d)), even if a finger gets stuck in the gap G, the size of the gap G is maintained relatively wide, so finger pinching accidents are unlikely to occur. Also, in the process of the door body 2 rotating from the 45° open position (Fig. 4(d)) to the fully closed position (Fig. 4(a)), the opening-side corner B2 of the door body 2 is displaced from the closing side to the opening side, and at the same time, the tilt angle with respect to the door width direction D2 becomes smaller, so that the opening-side corner B2 gradually faces the opening side. Therefore, even if a fingertip is placed in the gap G when the door body 2 is in the 45° open position (Figure 4(d)) and the door body 2 rotates from this state to the closing side, the opening side corner B2 will come into contact with the fingertip and act to push the fingertip toward the opening side, preventing the fingertip from getting caught between the door body 2 and the vertical frame 5 on the trailing edge of the door.

[0032] In this way, in this embodiment, the dimension of the gap G when the door body 2 is in the fully closed position is set to 3.5 mm, which prevents fingertips from getting into the gap G. Furthermore, even if an error occurs in the installation of the door body 2 relative to the frame body 3, the door body 2 can be prevented from abutting against the trailing edge vertical frame 5.

[0033] Furthermore, when the door body 2 is in the fully closed position, the dimension of the gap G is small at 3.5 mm, which improves sound insulation. Furthermore, since the gap G at this time is defined by the side surface portion 51 of the trailing edge vertical frame 5 and the trailing edge end face B1 of the door body 2, which face each other, it has the same width dimension in the door thickness direction D4 as the width dimension L4 (Fig. 2) of the trailing edge end face B1. Furthermore, sound insulation is also improved by the gap G having a predetermined width dimension in the door thickness direction D4. The width dimension L4 of the trailing edge end face B1 (i.e., the width dimension of the gap G) is preferably 10 mm to 17 mm, and more preferably 14 mm.

[0034] Furthermore, the dimension of the gap G temporarily decreases as the door body 2 rotates from the fully closed position to the opening direction, but because the angle β1 that the straight line L1 makes with respect to the door width direction D5 is set to 7.5°, it is possible to reduce the difference in dimension between the dimension of the gap G when the door body 2 is in the fully closed position and the minimum value of the gap G (the dimension of the gap G when the door body 2 is opened by β1=7.5°). This reduces the dimension of the gap G at the fully closed position, while preventing the door body 2 from abutting against the side surface 51 of the trailing edge vertical frame 5 as it rotates.

[0035] Furthermore, the trailing edge side end B of the door body 2 does not have a curved portion, which reduces the effort required for constructing the trailing edge side end B. The side surface 51 of the trailing edge side vertical frame 5 does not have a protrusion extending toward the leading edge side, and the open side portion 42 of the leading edge side vertical frame 4 and the open side portion 52 of the trailing edge side vertical frame 5 are symmetrical (left-right symmetrical) in the frame width direction D1, so when the entire door structure 1 is viewed from the open side, the left and right sides are well balanced and the appearance is good.

[0036] The door structure according to an embodiment of the present invention has been described above with reference to the accompanying drawings, but the present invention is not limited to such an embodiment, and various modifications and alterations are possible without departing from the scope of the present invention.

[0037] For example, when the door body 2 is in the fully closed position, the dimension of the gap G is not limited to 3.5 mm, and the same effect as described above can be obtained by setting it to 2.0 mm to 7.0 mm. Furthermore, the angle β1 that the straight line L1 makes with respect to the door width direction D5 is not limited to 7.5°, and the same effect as described above can be obtained by setting it to 0° to 15°. Note that when the angle β1 is 0°, the dimension of the gap G is minimum when the door 2 is in the fully closed position. Furthermore, the distance L2 from the axis C to the trailing edge B1 and the distance L3 from the axis C to the surface F of the door body 2 are not limited to 25 mm and 13 mm, respectively, and can be changed as appropriate. [Explanation of symbols]

[0038] 1 Door structure 2 Door body 3 Frame 4. Vertical frame at the front of the door 5 Door end vertical frame 51 Side part B Door end side end B1 Door end side end face B2 Open side corner C axis (rotation center) D2 Frame thickness direction (frame thickness direction) D4 Door thickness direction (door body thickness direction) D5 Door width direction G Gap L1: A straight line passing through the rotation center and the opening edge of the end face of the door tail

Claims

1. A frame body having a door end side vertical frame; a door body rotatably connected to the frame body between a fully open position and a fully closed position, The trailing edge vertical frame has a side surface portion extending in a frame thickness direction, which is the thickness direction of the frame body, a side of the door body from the fully closed position to the fully open position is defined as an open side; The door body has a trailing edge side end surface extending in a door thickness direction, which is a thickness direction of the door body, and an opening side corner portion extending from an opening side edge of the trailing edge side end surface, Regardless of the rotation angle of the door body, a gap is provided between the door body and the trailing edge vertical frame in the width direction of the frame body, When the door body is in a fully closed position, the gap is defined by the trailing edge end face of the door body and the side face portion of the trailing edge vertical frame, which face each other, and the dimension of the gap is 2.0 mm to 7.0 mm.

2. 2. The door according to claim 1, wherein an angle formed by a line passing through the pivot center of the door body and the opening side edge of the trailing edge side surface with respect to the width direction of the door body is 0° to 15°.

3. 3. The door structure according to claim 1, wherein the gap has a width of 10 mm to 17 mm in the door thickness direction when the door body is in a fully closed position.

4. The door structure according to claim 1 or 2, wherein the pivot center is located on the opening side of the door body in the door thickness direction.

5. The frame body further has a door end side vertical frame, and the door end side vertical frame has a first open side portion, The trailing edge vertical frame further has a crank-shaped second opening side portion located closer to the opening side than the side portion, The door structure according to claim 1 or 2, wherein the first open side portion and the second open side portion are formed symmetrically with respect to an axis.

6. 3. The door structure according to claim 1, wherein the gap is open to the opening side regardless of the rotation angle of the door body.

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