Door structure and booth using the door structure

Abstract

To provide a door structure excellent in design and sound insulation and a booth using the door structure.SOLUTION: A door structure 110 has a door part 10, which has a door panel part 1 and a suspending side end 2 provided on a side end on a second side RT of the door panel part 1 and extending in a height direction V and can rotate around a rotation axis R extending in the height direction V at the suspending side end 2, and a vertical frame part 20, which is disposed at a marginal part on the second side RT of an opening and extends in the height direction V. The vertical frame part 20 has an inside extension part 3, which extends on a first side LT and is disposed on an inner space S2 side, and an outside extension part 4, which extends on the first side LT and is disposed on an outer space S1 side. When the door part 10 is located at a closed position, a surface on the outer space S1 side of the suspending side end 2 is substantially flush with a surface on the outer space S2 side of the vertical frame part 20. A tip 2t located on the most second side RT of the suspending side end 2 is disposed on the more second side RT than a tip 3t located on the most first side LT of the inside extension part 3 and a tip 4t located on the most first side LT of the outside extension part 4.SELECTED DRAWING: Figure 3

Description

Technical Field

[0005]

[0001] The present invention relates to a door structure and a booth using the door structure.

Background Art

[0002] Conventionally, there is a booth (private room or soundproof room) having an internal space where work can be carried out without being affected by external noise. Since a user works concentratedly in the internal space of the booth, a wall body or a door structure that separates the inside and the outside of the booth is required to have excellent sound insulation properties.

[0003] As a door structure applicable to a booth or the like, there is a door device described in Patent Document 1. In the door device described in Patent Document 1, a bulging portion on the hanging side of the door is in a semi-arc shape having the same diameter as the thickness of the door and is formed concentrically with the hinge pin of the pivot hinge. Therefore, even when the door is opened and closed, the relative relationship with the stepped portion of the door frame does not change, and the gap between the door and the door frame can be kept sufficiently small. Further, since the step provided on the stepped portion is formed on the open side (outer side) of the door, the surface of the door does not substantially approach the stepped portion even when the door is opened. Therefore, it effectively prevents a finger pinching accident on the hanging side of the door.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, the door device described in Patent Document 1 has a step between the door frame and the door on the outside, which may make it look cluttered and compromise its design. Also, in a cross section perpendicular to the door's axis of rotation, the gap between the door and the door frame is a simple L-shape. As a result, sound transmitted from the outside to the inside of the door through the gap between the door and the door frame is less attenuated, which may result in poor sound insulation.

[0006] Based on the above circumstances, the present invention aims to provide a door structure with excellent design and sound insulation properties, and a booth using the door structure. [Means for solving the problem]

[0007] To solve the above problems, this invention proposes the following means. The door structure of the present invention is a door structure capable of opening and closing an opening that connects an external space and an internal space, wherein when the free end side that moves the most when the door structure is opened and closed is designated as the first side in the width direction, and the side opposite to the first side is designated as the second side in the width direction, the door structure has a substantially flat door panel portion, a hinge side end portion provided at the side end of the second side of the door panel portion and extending in the height direction, a door portion that is rotatable about a rotation axis extending in the height direction at the hinge side end portion, and a vertical frame portion arranged at the edge of the second side of the opening and extending in the height direction. The vertical frame portion comprises an inner extension portion extending toward the first side and provided toward the internal space, and an outer extension portion extending toward the first side and provided toward the external space. When the door portion is in the closed position, the external space side surface of the hinge end and the external space side surface of the vertical frame portion are substantially the same plane, and the tip portion of the hinge end that is furthest toward the second side is positioned to the second side of the tip portion of the inner extension portion that is furthest toward the first side and the tip portion of the outer extension portion that is furthest toward the first side. In a cross-section perpendicular to the axis of rotation, the hinge end has an arc shape centered on the axis of rotation in the range on the second side and the internal space side from the axis of rotation, and the hinge end has a protruding piece extending from the hinge end to the second side when the door is in the closed position, and the protruding piece has a sound-insulating member.

[0008] In this embodiment, when the door is in the closed position, the surface of the hinge end facing the external space and the surface of the vertical frame facing the external space form the same plane. Therefore, the door structure viewed from the external space has fewer steps and excellent design. Furthermore, the second-to-last tip of the hinge end is positioned second to the left of the first-to-last tip of the inner extension and the first-to-last tip of the outer extension. As a result, sound transmitted from the external space to the internal space passes through an intricate, roughly U-shaped path (gap), which attenuates more easily than passing through a simple L-shaped gap, and the door structure has excellent sound insulation.

[0009] In the above door structure, when the door portion is in the closed position, in a cross section perpendicular to the rotation axis, the hinge end portion may have an arc shape centered on the rotation axis in the range on the second side and the internal space side from the rotation axis.

[0010] In this embodiment, the distance from the second-to-last tip of the inner extension to the hinge-side end is maintained at a constant distance even when the door rotates between the closed and open positions. This prevents the user's fingers from getting caught in the gap between the door and the vertical frame in the interior space.

[0011] In the above door structure, the hinge-side end may have a protruding piece extending from the hinge-side end to the second side when the door is in the closed position.

[0012] In this embodiment, the protruding piece extending from the hinge end to the second side creates a more intricate path for sound to travel from the external space to the internal space, resulting in a door structure with superior sound insulation.

[0013] In the above door structure, the protruding piece may have a sound-insulating member.

[0014] In this embodiment, the protruding piece has a sound-insulating member, which makes it possible to create a more intricate path for sound to travel from the external space to the internal space and to provide sound absorption performance, resulting in a door structure with superior sound insulation.

[0015] In the above door structure, the distance between the tip portion located on the most first side of the inner extension portion and the suspension-side end portion may be less than 8 mm.

[0016] In this aspect, by making the distance from the tip portion located on the most first side of the inner extension portion to the suspension-side end portion less than 8 mm, it is possible to further suppress the user's finger from being caught in the gap between the door portion and the vertical frame portion on the inner space side.

[0017] In the above door structure, the distance between the tip portion located on the most first side of the outer extension portion and the suspension-side end portion may be less than 8 mm.

[0018] In this aspect, by making the distance from the tip portion located on the most first side of the outer extension portion to the suspension-side end portion less than 8 mm, it is possible to suppress the user's finger from being caught in the gap between the door portion and the vertical frame portion on the outer space side.

[0019] The booth of the present invention includes a wall body surrounding the inner space and a box body having the opening, and any one of the above-described door structures attached to the opening of the box body.

[0020] In this aspect, by dividing the inner space and the outer space with the box body and the door structure and making the door structure openable and closable, it is possible to provide a booth in which a user can work in the inner space. Further, by providing the door structure excellent in the above-described design property and sound insulation property, it is possible to provide a booth excellent in design property and sound insulation property.

Effect of the Invention

[0021] According to the door structure of the present invention and the booth using the door structure, it is possible to provide a door structure excellent in design property and sound insulation property and a booth using the door structure.

Brief Description of the Drawings

[0022] [Figure 1] It is a perspective view showing an outline of the booth according to the present embodiment. [Figure 2] It is a front view schematically showing the door structure according to the present embodiment. [Figure 3] It is a cross-sectional view showing the closed position of the door structure. [Figure 4] It is a cross-sectional view showing the open position of the door structure. [Figure 5] It is a cross-sectional view showing the closed position of the door structure according to Modification 3.

Mode for Carrying Out the Invention

[0023] <于 An embodiment of the present invention will be described with reference to the drawings.

[0024] FIG. 1 is a perspective view showing an outline of the booth 100 according to the present embodiment. FIG. 2 is a front view schematically showing the door structure 110 according to the present embodiment. FIG. 3 is a cross-sectional view showing the closed position P1 of the door structure 110. FIG. 4 is a cross-sectional view showing the open position P2 of the door structure 110.

[0025] The booth 100 is a private booth that can divide an external space S1 outside the booth 100 and an internal space S2 inside the booth 100. The user can enter the internal space S2 of the booth 100 by communicating the external space S1 and the internal space S2 by opening the door structure 110, and can divide the external space S1 and the internal space S2 of the booth 100 by closing the door structure 110.

[0026] In the present embodiment, as shown in FIG. 1, the vertical direction in the booth 100 is defined as the "height direction (vertical direction) V", the vertically upward direction is defined as the "upper side UP" in the height direction V, and the vertically downward direction is defined as the "lower side LO" in the height direction V. Further, the front-rear direction in the booth 100 is defined as the "front-rear direction D", the side where the door structure 110 is arranged in the booth 100 is defined as the "front side FR" in the front-rear direction D, and the side opposite to the front side FR is defined as the "rear side RR" in the front-rear direction D. Further, the left-right direction in the booth 100 is defined as the "width direction (left-right direction) H", the free end side that moves most when the door structure 110 is opened and closed is defined as the "first side (left side) LT" in the width direction H, and the side opposite to the first side is defined as the "second side (right side) RT" in the width direction H.

[0027] Booth 100 comprises a door structure 110 and a box body 120. Booth 100 is a private booth that divides the external space S1 and the internal space S2. The door structure 110 is a single-leaf door structure that can open and close the opening 40 of the box body 120 that connects the external space S1 and the internal space S2.

[0028] The door structure 110 comprises a door section 10 and a vertical frame section 20. The door section 10 is rotatable relative to the vertical frame section 20 between a closed position P1 and an open position P2, with the rotation axis R as the center of rotation.

[0029] In this embodiment, when the door structure 110 is in the closed position P1, the external space S1 side of the door structure 110 coincides with the front FR. The internal space S2 side coincides with the rear RR. However, since the door structure 110 also includes door structures that do not divide the external space S1 and the internal space S2, the external space S1 side does not necessarily represent the front FR. Also, the internal space S2 side does not necessarily represent the rear RR. The external space S1 side and the rear RR may coincide, and the internal space S2 side may coincide with the front FR.

[0030] The door section 10 comprises a door panel section 1 and a hinge-side end section 2. As shown in Figure 1, the door panel section 1 is a substantially flat plate that can close the opening 40.

[0031] The hinge end portion 2 is provided at the side end of the second side (right side) RT of the door panel portion 1 and extends in the height direction (up and down direction) V. As shown in Figure 2, the hinge end portion 2 comprises a cylindrical first shaft portion 2a provided on the upper side UP and a frustoconical second shaft portion 2b provided on the lower side LO, with a diameter reduced towards the lower side LO.

[0032] Here, we will describe the vertical frame portion 20 that rotatably supports the suspension end portion 2 around a rotation axis R passing through the central axes of the first shaft portion 2a and the second shaft portion 2b.

[0033] The vertical frame portion 20 is substantially rod-shaped and extends in the height direction V, and is positioned at the edge of the second side RT of the opening 40. The vertical frame portion 20 includes a first bearing 20a provided on the upper side UP and having an opening, and a second bearing 20b provided on the lower side LO and having a recess on its inner circumferential surface that can contact the outer circumferential surface of the second shaft portion 2b of the suspension side end 2.

[0034] As shown in Figure 2, in the upper part UP, the first shaft portion 2a of the suspension end 2 is positioned within the opening provided in the first bearing 20a. In the lower part LO, the second shaft portion 2b of the suspension end 2 is positioned such that its outer circumferential surface abuts against the inner circumferential surface of the second bearing 20b.

[0035] The hinge end 2 is supported by the vertical frame 20 so as to be rotatable around a rotation axis R that passes through the central axes of the first shaft portion 2a and the second shaft portion 2b, which extend in the height direction V. In other words, the door portion 10 is rotatable relative to the vertical frame 20 with the rotation axis R extending in the height direction V at the hinge end 2 as the center of rotation.

[0036] Furthermore, the vertical frame portion 20 includes an inner extension portion 3 and an outer extension portion 4. As shown in Figure 3, the inner extension portion 3 extends to the first side (left side) LT and is provided on the internal space S2 side (rear side RR). The outer extension portion 4 also extends to the first side LT and is provided on the external space S1 side (front side FR).

[0037] As shown in Figure 3, in a cross-section perpendicular to the rotation center R, the vertical frame portion 20 has a roughly U-shape with its opening facing the first side LT. The inner extension portion 3 forms the end of the roughly U-shaped rear RR in the vertical frame portion 20. The outer extension portion 4 forms the end of the roughly U-shaped front FR in the vertical frame portion 20. The tip portion 4t of the outer extension portion 4, located at the first side LT, is positioned at the second side RT of the suspension side end portion 2.

[0038] Furthermore, the tip 3t ​​of the inner extension 3, located at the foremost LT, is positioned at the rear RR of the suspension end 2, and is positioned at the first LT further forward than the tip 4t of the outer extension 4, which is located at the foremost LT. As a result, the inner space S2 is not visible from the outer space S1 side in the gap between the suspension end 2 and the vertical frame 20, as it is blocked by the inner extension 3.

[0039] The shape of the vertical frame portion 20 is not limited to the shape shown in Figure 3. For example, the tip portion 3t located at the firstmost LT of the inner extension portion 3 and the tip portion 4t located at the firstmost LT of the outer extension portion 4 may be smoothly connected in an arc shape centered on the rotation axis R. As a result, the vertical frame portion 20 visible through the gap between the suspension end portion 2 on the external space S1 side and the vertical frame portion 20 has a simple shape with few steps, thus offering excellent design aesthetics.

[0040] Here, as shown in Figure 3, when the door section 10 is in the closed position P1, the surface of the hinge end 2 facing the external space S1 and the surface of the vertical frame section 20 facing the external space S1 form the same plane. Therefore, the door structure 110 viewed from the external space S1 side has fewer steps and excellent design. The area in which the surface of the hinge end 2 facing the external space S1 and the surface of the vertical frame section 20 facing the external space S1 form the same plane is preferably near the gap between the hinge end 2 and the vertical frame section 20, and in the width direction H on the external space S1 side of the hinge end 2 and the vertical frame section 20, it is desirable that the area 2 mm from the end of the second side RT on the hinge end 2 and the area 2 mm from the end of the first side LT on the vertical frame section 20 are on the same plane.

[0041] Furthermore, the tip portion 2t of the suspension end portion 2, located at the second-to-last RT, is positioned second-to-last RT from the tip portion 3t of the inner extension portion 3, located at the first-to-last LT, and the tip portion 4t of the outer extension portion 4, located at the first-to-last LT.

[0042] Therefore, the gap between the hinge end 2 and the vertical frame 20 in a cross section perpendicular to the rotation axis R is roughly U-shaped with the opening facing the first side LT. Sound transmitted from the external space S1 through the gap between the hinge end 2 and the vertical frame 20 enters the gap between the tip 4t located at the first side LT of the outer extension 4 and the hinge end 2, bends towards the second side RT along the tip 2t located at the second side RT of the hinge end 2, then bends towards the first side LT along the inner extension 3, passes through the gap between the tip 3t ​​located at the first side LT of the inner extension 3 and the hinge end 2, and reaches the internal space S2. Because sound transmitted from the external space S1 to the internal space S2 passes through an intricate, roughly U-shaped path (gap), it is more easily attenuated than passing through a simple L-shaped gap, and the door structure 110 has excellent sound insulation properties.

[0043] As shown in Figures 3 and 4, the door portion 10, which rotates between a closed position P1 and an open position P2, does not come into contact with the vertical frame portion 20. In this embodiment, the door portion 10 can rotate approximately 90° between the closed position P1 and the open position P2.

[0044] Here, the range 2s from the axis of rotation R at the hinge end 2 to the second side RT and the internal space S2 side is preferably an arc shape centered on the axis of rotation R. As a result, the distance D1 between the hinge end 2 and the tip 3t ​​located at the first side LT of the inner extension 3 remains constant even when the door 10 rotates between the closed position P1 and the open position P2. As a result, it is possible to prevent the user's fingers from getting caught in the gap between the door 10 and the vertical frame 20 on the internal space S2 side.

[0045] When the opening and closing angle of the door section 10 is greater than 90°, the distance D1 of the opening and closing door section 10 can be kept constant by widening the range of the arc shape at the hinge end 2 towards the outer space S1 side from the rotation center R, depending on the opening and closing angle.

[0046] Furthermore, the distance D1 from the tip 3t ​​located at the foremost side LT of the inner extension 3 to the hinge side end 2 should be greater than 0 mm and preferably less than 8 mm. By setting the distance D1 to less than 8 mm, the risk of a user's fingers getting caught in the gap between the door section 10 and the vertical frame section 20 can be further reduced.

[0047] Furthermore, the distance D2 from the tip 4t located at the firstmost LT of the outward extension 4 to the hinge side end 2 is preferably greater than 0 mm and less than 8 mm. By setting the distance D2 to less than 8 mm, it is possible to prevent the user's fingers from getting caught in the gap between the door section 10 and the vertical frame section 20, even on the external space S1 side.

[0048] Distances D1 and D2 are preferably greater than 0 mm so as not to hinder the rotation of the door section 10, but this is not limited to cases where the rotation of the door section 10 is not hindered even if distances D1 and D2 are 0 mm. For example, if the material of the hinge end 2 is an elastic material such as rubber, and the door section 10 can rotate even if the hinge end 2 and the vertical frame section 20 are in contact, then distances D1 and D2 may be 0 mm.

[0049] On the external space S1 side of the pivot end 2, the shape of the second side RT may be an arc shape centered on the pivot axis R. As a result, on the external space S1 side, as with the internal space S2 side, the distance D2 is maintained at a constant distance even when the door portion 10 rotates between the closed position P1 and the open position P2, further suppressing the risk of the user's fingers getting caught in the gap between the door portion 10 and the vertical frame portion 20.

[0050] In this embodiment, the vertical frame portion 20 is positioned to cover the arc-shaped area of ​​the second side RT at the suspension end portion 2.

[0051] By making the area covered by the vertical frame portion 20 of the second side RT of the hanging end 2 an arc shape, it is possible to prevent the user from getting their fingers caught in the internal space S2 and the external space S1. For example, at the hanging end 2, the area of ​​the second side RT from the rotation axis R may be an arc shape centered on the rotation axis R, and furthermore, the area of ​​the second side RT and the outer space S1 from the rotation axis R may be an arc shape centered on the rotation axis R with a central angle of 30° or more and less than 90°.

[0052] Furthermore, in this embodiment, the radius of the arc shape of the second side RT at the suspension end 2 is smaller than the thickness (dimension) of the suspension end 2 in the front-rear direction D, and is greater than half the value of the thickness of the suspension end 2 in the front-rear direction D. Also, the rotation axis R is located on the outer space S1 side from the center of the suspension end 2 in the front-rear direction D.

[0053] When a user closes the door section 10, there is a possibility that they may release their hand from the doorknob or the like provided on the first side LT of the door section 10 and close the door section 10 with force. In addition, to make it easier to close the door section 10, a mechanism such as a spring that biases the door section 10 in the closing direction may be installed. When the door section 10 is biased in the closing direction, the gap between the door section 10 and the vertical frame section 20 is more likely to pinch the user's fingers in the gap on the internal space S2 side than in the gap on the external space S1 side, and a structure that suppresses the user from pinching their fingers is therefore more desirable.

[0054] The box-shaped structure 120 comprises a wall 30 that divides the external space S1 and the internal space S2, and an opening 40 provided in the wall 30, which is a through hole that connects the external space S1 and the internal space S2. As shown in Figure 1, the box-shaped structure 120 is a rectangular parallelepiped formed by the wall 30, with a portion of the front surface FR being open by the opening 40.

[0055] Booth 100 is formed by attaching a door structure 110 to the opening 40 of a box body 120. That is, in the internal space S2 of booth 100, the upper side UP, lower side LO, first side LT, second side RT, rear side RR, and a portion of the front side FR other than the opening 40 are enclosed by a wall 30. The door structure 110 is located in the portion of the front side FR (opening 40) of the internal space S2 that is not enclosed by the wall 30, and when the door section 10 is in the closed position P1, the internal space S2 is enclosed by the wall 30 and the door structure 110 and separated from the external space S1.

[0056] The internal space S2 enclosed by the box body 120 and the door structure 110 is large enough for the user to perform tasks such as working. The user can move the door section 10 from the closed position P1 to the open position P2 by rotating it around the rotation axis R, allowing them to move between the external space S1 and the internal space S2 of the booth 100. Furthermore, by closing the door section 10 to the closed position P1, the external space S1 and the internal space S2 can be separated. In addition, by using the door structure 110, which has excellent sound insulation properties, the user can work in the internal space S2 in a quiet environment where noise from the external space S1 is less likely to be transmitted.

[0057] In this embodiment, when the door structure 110 and the booth 100 using the door structure 110 are in the closed position P1, the surface of the hinge end 2 facing the external space S1 and the surface of the vertical frame 20 facing the external space S1 form the same plane. Therefore, the door structure 110 viewed from the external space S1 has fewer steps and excellent design. Furthermore, the tip 2t of the hinge end 2, located at the second-to-last RT, is positioned second-to-last RT from the tip 3t ​​of the inner extension 3, located at the first-to-last LT, and the tip 4t of the outer extension 4, located at the first-to-last LT. Therefore, sound transmitted from the external space S1 to the internal space S2 passes through a roughly U-shaped path (gap), making it easier to attenuate than passing through a simple L-shaped gap, and the door structure 110 has excellent sound insulation.

[0058] As a result, we can provide a door structure 110 with excellent design and sound insulation properties, and a booth 100 using the door structure 110.

[0059] Although one embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes and the like that do not depart from the spirit of the present invention are also included. Furthermore, the components shown in the above-described embodiment and the following modifications can be combined as appropriate.

[0060] (Variation 1) In the above embodiment, as shown in Figures 3 and 4, the door portion 10 has a hinge-side end 2 connected to the side end of the second side RT of the door panel portion 1, but the configuration of the door portion is not limited to this. The door portion may be formed integrally with the door panel portion and the hinge-side end. For example, in a flat door portion in which the door panel portion and the hinge-side end are formed integrally, if the shape of the second side RT is the same as the shape of the hinge-side end 2 in the above embodiment, the booth and door structure can have excellent design and sound insulation properties.

[0061] (Modification 2) In the above embodiment, the booth 100 is equipped with a single-leaf door structure 110, but the configuration of the booth is not limited thereto. The booth may also be equipped with a double-leaf door structure. If the booth is equipped with a double-leaf door structure, for example, by providing a double-leaf door structure that includes the door structure 110 of the above embodiment and a door structure in which the door structure 110 is inverted in the width direction H, the booth and door structure can have excellent design and sound insulation properties, similar to the above embodiment.

[0062] (Variation 3) In the above embodiment, in the door portion 10 located in the closed position P1, the tip portion 2t of the hinge-side end 2, located at the second-to-last RT, is located at the second-to-last RT of the door portion 10, but the configuration of the door portion is not limited thereto. The hinge-side end 2A of the door portion 10A may have a protruding piece 5 provided at the second-to-last RT of the door portion 10A located in the closed position P1. Figure 5 is a cross-sectional view showing the closed position P1 of the door structure 110A according to Modification 3.

[0063] As shown in Figure 5, the hinge end 2A has a protruding piece 5 that extends from the hinge end 2A to the second side RT when the door portion 10A is in the closed position P1. The protruding piece 5 extends to the second side RT from the tip portion 2t of the hinge end 2A that is located at the second side RT. Therefore, in the gap between the hinge end 2A and the vertical frame portion 20, sound transmitted from the external space S1 to the internal space S2 is blocked by the protruding piece 5 and travels to the internal space S2 side via a path that avoids the protruding piece 5 to the second side RT. As a result, sound transmitted from the external space S1 to the internal space S2 in the gap between the hinge end 2A and the vertical frame portion 20 passes through a more intricate path compared to the above embodiment, making it easier for the sound to attenuate and further improving the sound insulation performance of the door structure 110.

[0064] Furthermore, the protruding piece 5 may have a sound-insulating member 5a. As shown in Figure 5, when the door portion 10A is in the closed position P1, the sound-insulating member 5a is positioned between the protruding piece 5 and the surface 4s of the rear RR of the outward extension portion 4. Also, the protruding piece 5 is in contact with the surface 4s of the rear RR of the outward extension portion 4 via the sound-insulating member 5a. Therefore, the gap between the hinge end portion 2A and the vertical frame portion 20 is blocked by the protruding piece 5 and the sound-insulating member 5a, preventing communication between the external space S1 and the internal space S2. As a result, when the door portion 10A is in the closed position P1, sound is less likely to be transmitted from the external space S1 to the internal space S2, and the door structure 110 can have better sound insulation. Even if the protruding piece 5 does not have a sound-insulating member 5a, the door structure 110 can have better sound insulation if the protruding piece 5 is in contact with the outward extension portion 4 and the gap between the hinge end portion 2A and the vertical frame portion 20 is blocked by the protruding piece 5.

[0065] The sound-insulating member 5a may be provided on the protruding piece 5 or on the outward extension 4. Furthermore, the sound-insulating member 5a does not have to be positioned between the protruding piece 5 in the closed position P1 and the rear surface 4s of the outward extension 4.

[0066] For example, if the sound-insulating member 5a provided on the protruding piece 5 is positioned to protrude further to the second side RT than the protruding piece 5 located in the closed position P1, the path through which sound travels in the gap between the hinge end 2A and the vertical frame 20 becomes more intricate, making it easier for sound to attenuate and improving the sound insulation performance of the door structure 110A.

[0067] Furthermore, an elastic material such as foamed rubber can be used as the sound-insulating member 5a. By using an elastic material as the sound-insulating member 5a, when the protruding piece 5 comes into contact with the outward extension 4 via the sound-insulating member 5a, the impact noise caused by the contact between the protruding piece 5 and the outward extension 4 can be suppressed. Alternatively, a material with sound-absorbing properties may be used as the sound-insulating member 5a. By using a material with sound-absorbing properties as the sound-insulating member 5a, the sound-insulating member 5a absorbs the sound passing through the gap between the hinge end 2A and the vertical frame 20, thereby improving the sound insulation of the door structure 110. [Explanation of Symbols]

[0068] 100 booths 110 Door structure 10 Door section 1. Door panel section 2 Hanging side end 2t The tip located at the second-to-last end of the suspension side 2s Range on the second side and the internal space side from the axis of rotation at the suspension end. 20 Vertical frame section 3 Inner extension 3t The tip located on the first side of the inner extension 4 Outer extension 4t The tip located on the first side of the outer extension 5 protruding piece 5a Sound insulation material 120 Box body 30 wall 40 openings S1 External space S2 interior space R rotation axis V Height direction (up and down direction) UP upper side LO (lower side) H Width direction (left / right direction) LT First side (left side) RT Second side (right side) P1 closed position P2 open position D1 Distance from the firstmost tip of the inner extension to the end on the suspension side D2 Distance from the firstmost tip of the outward extension to the end on the suspension side

Claims

1. A door structure capable of opening and closing an opening that connects an external space and an internal space, wherein the free end side that moves the most when the door structure is opened and closed is designated as the first side in the width direction, and the side opposite to the first side is designated as the second side in the width direction, A door section having a substantially flat door panel and a hinge end provided at the second side end of the door panel and extending in the height direction, and a door section that is rotatable about a rotation axis extending in the height direction at the hinge end, A vertical frame portion is provided, which is positioned on the second edge of the opening and extends in the height direction. Equipped with, The vertical frame portion has an inner extension portion that extends toward the first side and is provided toward the internal space, and an outer extension portion that extends toward the first side and is provided toward the external space, When the door section is in the closed position, The surface of the hanging end facing the external space and the surface of the vertical frame facing the external space are substantially the same plane. The tip of the suspension end located on the second side is positioned to the second side of the tip of the inner extension located on the first side and the tip of the outer extension located on the first side. In a cross-section perpendicular to the rotation axis, the suspension end has an arc shape centered on the rotation axis in the range on the second side and the internal space side relative to the rotation axis. The hinge-side end has a protruding piece that extends from the hinge-side end to the second side when the door portion is in the closed position. The aforementioned protruding piece has a sound-insulating member. Door structure.

2. A door structure capable of opening and closing an opening that connects an external space and an internal space, wherein the free end side that moves the most when the door structure is opened and closed is the first side in the width direction, and the side opposite to the first side is the second side in the width direction, A door section having a substantially flat door panel and a hinge end provided at the second side end of the door panel and extending in the height direction, and a door section that is rotatable about a rotation axis extending in the height direction at the hinge end, A vertical frame portion is provided, which is positioned on the second edge of the opening and extends in the height direction. Equipped with, The vertical frame portion has an inner extension portion that extends toward the first side and is provided toward the internal space, and an outer extension portion that extends toward the first side and is provided toward the external space, When the door section is in the closed position, The surface of the hanging end facing the external space and the surface of the vertical frame facing the external space are substantially the same plane. The tip of the suspension end located on the second side is positioned to the second side of the tip of the inner extension located on the first side and the tip of the outer extension located on the first side. The hinge-side end has a protruding piece that extends from the hinge-side end to the second side when the door portion is in the closed position. The aforementioned protruding piece has a sound-insulating member. Door structure.

3. The distance between the tip of the inner extension portion located on the first side and the end portion on the suspension side is less than 8 mm. The door structure according to claim 1.

4. The distance between the tip of the outer extension located on the first side and the end on the suspension side is less than 8 mm. The door structure according to claim 3.

5. A wall body enclosing the internal space and a box body having the opening, A door structure according to any one of claims 1 to 4, which is attached to the opening of the box body, Equipped with, booth.

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