Door structure and booth using the door structure

Abstract

The present invention provides a door structure having an opening stopper function and a finger pinching prevention function, and a booth using the door structure. [Solution] The door structure 110 includes a door panel 1, a hinge end 2 provided at the second side end of the door panel 1 and extending in the height direction V, a door 10 that can rotate around a rotation axis R extending in the height direction V at the hinge end 2, and a vertical frame 20 positioned at the second side edge of the opening and extending in the height direction V, the vertical frame 20 has an inner extension 3 extending to the first side and provided on the internal space S2 side, and an outer extension 4 extending to the first side and provided on the external space S1 side, the hinge end 2 has a projection 5 extending to the second side, when the door 10 is in the closed position, in a cross section perpendicular to the rotation axis R, the range 2s on the second side and the internal space S2 side from the rotation axis R is in the shape of an arc centered on the rotation axis R, and the vertical frame 20 has an opening stopper 6 that contacts the projection 5 in the opening direction of the door 10 when the door 10 is in the open position.

Description

Technical Field

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

Background Art

[0002] Conventionally, there is a private room (booth or soundproof room) having an internal space where work can be performed without being affected by external noise. Such booths are often installed in limited spaces such as offices and corridors. Therefore, if the door opens beyond the assumed angle, the door may contact people passing by the wall of the room where the booth is installed or around the booth, resulting in damage to the wall of the room or the door of the booth, or injury to the passerby. Therefore, a stop structure for restricting the opening angle of the door is required.

[0003] As a door structure having a stop structure, there is a hinged door described in Patent Document 1. The hinged door described in Patent Document 1 is a hinged door configured to open and close the door body from a fully closed position to a fully open position, and has a stopper surface portion formed on the end surface portion on the hanging side of the door body and a tip surface formed on the vertical door frame on the hanging side facing the end surface portion on the hanging side. The stopper surface portion and the tip surface contact each other in the fully open position of the door body to prevent the door body from rotating. Therefore, it is not necessary to form an extension portion extending to the outdoor side on the vertical door frame to measure the prevention of the rotation of the door body, and the size of the door frame can be reduced. In addition, since the stopper surface portion and the tip surface are formed of an elastic material, even if a finger is drawn in when closing the door, the finger is protected by the elastic material.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, the hinged door described in Patent Document 1 is provided with a function to prevent opening and a function to protect fingers from being caught by placing parts made of elastic material (stopper surface and tip surface) on the door body and door frame, but it does not have a function to prevent fingers from being caught. Furthermore, using parts made of elastic material may increase costs and make the structure more complex.

[0006] Based on the above circumstances, the present invention aims to provide a door structure having an opening stopper function and a finger pinching prevention function, 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 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, and the hinge end portion has a projection that extends toward the second side, and when the door portion is in the closed position, in a cross section perpendicular to the rotation axis, the range toward the second side and the internal space side from the rotation axis is in the shape of an arc centered on the rotation axis, and when the door portion is in the open position, the vertical frame portion has an opening stopper portion that contacts the projection in the opening direction of the door portion.

[0008] In this embodiment, when the door is in the closed position, in a cross-section perpendicular to the axis of rotation, the area second to the axis of rotation and the area inside the interior space are in the shape of an arc centered on the axis of rotation. Therefore, the distance from the firstmost tip of the inner extension to the hinge 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 on the interior space side. Furthermore, when the door is in the open position, the projection on the hinge end and the opening stopper on the vertical frame come into contact in the opening direction of the door. This restricts the opening movement of the door, preventing it from opening beyond a set opening angle.

[0009] In the above door structure, the distance between the tip of the inner extension portion located on the first side and the hinge-side end may be less than 8 mm.

[0010] In this embodiment, by setting the distance from the first-most tip of the inner extension to the hinge-side end to less than 8 mm, it is possible to further suppress the risk of a user's fingers getting caught in the gap between the door and the vertical frame in the interior space.

[0011] In the above door structure, the distance between the tip of the outward extension that is located on the first side and the hinge side end may be less than 8 mm.

[0012] In this embodiment, by setting the distance from the firstmost tip of the outward extension to the vertical frame to less than 8 mm, it is possible to prevent the user's fingers from getting caught in the gap between the door and the vertical frame on the external side.

[0013] In the above door structure, the vertical frame portion may be provided with a closing stopper portion that contacts the projection portion in the closing direction of the door portion when the door portion is in the closed position.

[0014] In this embodiment, when the door is in the closed position, the projection contacts the locking mechanism, restricting the closing movement of the door. Therefore, the door does not rotate further back than the set closed position.

[0015] In the above door structure, when the door portion is in the closed position, a sound-insulating material is provided between the projection and the locking portion, and the projection may be in contact with the locking portion via the sound-insulating material.

[0016] In this embodiment, when the door is in the closed position, the gap between the hinge end and the vertical frame is sealed by the protrusion and sound-insulating material, preventing communication between the external and internal spaces. Therefore, when a user works in the internal space, the transmission of sound from the external space to the internal space is suppressed, allowing the user to work in a quiet space isolated from external noise.

[0017] The booth of the present invention comprises a box-shaped body having walls surrounding the internal space and the opening, and any of the above-described door structures attached to the opening of the box-shaped body.

[0018] In this embodiment, the interior space and the exterior space are divided by a box-shaped structure and a door structure, and by making the door structure openable and closable, a booth can be provided in which the user can work in the interior space. Furthermore, by providing a door structure with the above-mentioned opening stopper function and finger pinch prevention function, a booth with an opening stopper function and finger pinch prevention function can be provided. [Effects of the Invention]

[0019] The door structure and booth using the door structure of the present invention provide a door structure having an opening stopper function and a finger pinching prevention function, and a booth using the door structure. [Brief explanation of the drawing]

[0020] [Figure 1] This is a perspective view showing an outline of the booth according to this embodiment. [Figure 2] This is a schematic front view showing the door structure according to this embodiment. [Figure 3] This is a cross-sectional view showing the closed position of the door structure. [Figure 4] This is a cross-sectional view showing the open position of the door structure.

Best Mode for Carrying Out the Invention

[0021] An embodiment of the present invention will be described with reference to FIGS. 1 to 4.

[0022] FIG. 1 is a perspective is a perspective view showing an overview of the booth 100 according to this embodiment. FIG. 2 is a front view schematically showing the door structure 110 according to this 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.

[0023] 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.

[0024] In this 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 the "upper side UP" in the height direction V, and the vertically downward direction is 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 the "front side FR" in the front-rear direction D, and the side opposite to the front side FR is 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 the "first side (left side) LT" in the width direction H, and the side opposite to the first side is the "second side (right side) RT" in the width direction H.

[0025] The booth 100 includes a door structure 110 and a box body 120. The booth 100 is a private booth that divides the external space S1 and the internal space S2. The door structure 110 is a single-opening door structure that can open and close an opening 40 of the box body 120 that communicates the external space S1 and the internal space S2.

[0026] 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.

[0027] Here, 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. Also, the internal space S2 side coincides with the rear RR. Note that the door structure 110 also includes door structures that do not divide the external space S1 and the internal space S2, so 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.

[0028] The door section 10 comprises a door panel section 1, a hinge-side end 2, and a projection 5. As shown in Figure 1, the door panel section 1 is a substantially flat plate that can close the opening 40.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] As shown in Figure 3, the projection 5 extends from the side end face of the second side RT of the hinge side end 2 to the second side RT in the door portion 10 located in the closed position P1.

[0035] Furthermore, the vertical frame portion 20 includes an inner extension portion 3, an outer extension portion 4, an opening stopper portion 6, and a closing stopper portion 7. 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).

[0036] 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.

[0037] 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.

[0038] The opening stopper portion 6 is provided on the front FR of the inner extension portion 3, and as shown in Figure 4, when the door portion 10 is in the open position P2, it contacts the projection portion 5 in the opening direction of the door portion 10. In this embodiment, the opening stopper portion 6 is a groove shape provided on the surface of the front FR of the inner extension portion 3, and has a plane on the second side RT that contacts the projection portion 5 in the open position P2. When the door portion 10 rotates from the closed position P1 to the open position P2, the projection portion 5 extending to the second side RT of the hinge end portion 2 rotates together with the hinge end portion 2 around the rotation axis R and approaches the opening stopper portion 6. When the door portion 10 rotates from the closed position P1 to the open position P2, the projection portion 5 contacts the opening stopper portion 6 from the second side RT, restricting the opening movement of the door portion 10. Therefore, the door portion 10 does not open beyond the set opening angle.

[0039] The positional relationship between the projection 5 and the opening stopper 6 is such that they contact each other when the door portion 10 is in the open position P2. Furthermore, the shape of the opening stopper 6 is not limited to the shape of this embodiment; it may also be a projection extending in the front-to-back direction D from the front FR of the inner extension portion 3. By providing the opening stopper 6 on the front FR of the inner extension portion 3 and positioning it to contact the projection 5 in the open position P2, the projection 5 and the opening stopper 6 are obscured by the inner extension portion 3 and not visible from the rear RR, thus the door structure 110 has excellent design.

[0040] The locking portion 7 is a stepped shape provided on the rear RR of the outward extension portion 4. The locking portion 7 has a sound-insulating material 7a. As shown in Figures 3 and 4, the sound-insulating material 7a is arranged on the surface of the rear RR of the locking portion 7. When the door portion 10 is in the closed position P1, the locking portion 7 and the sound-insulating material 7a face the surface of the front FR of the projection portion 5.

[0041] When the door section 10 rotates from the open position P2 to the closed position P1, the projection 5 rotates together with the hinge end 2 around the rotation axis R and approaches the locking mechanism 7. When the door section 10 has rotated to the closed position P1, the projection 5 contacts the locking mechanism 7 from the rear side RR via the sound insulation material 7a, restricting the closing operation of the door section 10. Therefore, the door section 10 does not rotate further to the rear side RR than the set closed position P1.

[0042] Furthermore, when the door section 10 is in the closed position P1, the gap between the hinge end 2 and the vertical frame section 20 is sealed by the protrusion 5 and the sound-insulating material 7a, preventing communication between the external space S1 and the internal space S2. Therefore, when a user works in the internal space S2, sound is less likely to be transmitted from the external space S1 to the internal space S2, allowing the user to work in a quiet space isolated from the noise of the external space S1. An elastic material such as foamed rubber can be used as the sound-insulating material 7a. By using an elastic material as the sound-insulating material 7a, the impact sound when the protrusion 5 contacts the closing stopper 7 can be suppressed. Alternatively, a material with sound-absorbing properties may be used as the sound-insulating material 7a. By using a material with sound-absorbing properties as the sound-insulating material 7a, a door structure 110 with even better sound insulation can be provided.

[0043] The shape of the vertical frame portion 20 is not limited to the shape shown in Figure 3. For example, the opening stopper portion 6 and the closing stopper portion 7 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 hanging 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.

[0044] 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 may form the same plane. 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 of the hinge end 2 and the area 2 mm from the end of the first side LT of the vertical frame section 20 are on the same plane. As a result, the door structure 110 viewed from the external space S1 side has fewer steps and can have excellent design.

[0045] 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.

[0046] 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 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 firstmost 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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 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 10 and the vertical frame 20.

[0052] 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.

[0053] 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°.

[0054] 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.

[0055] 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 prevents the user from pinching their fingers is therefore more desirable.

[0056] 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.

[0057] 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.

[0058] 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 setting 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 a door structure 110 with an opening stopper function, when the user opens and closes the door structure 110 of the booth 100, the door section 10 will not open beyond a set angle, preventing the door section 10 from coming into contact with surrounding walls or people. Furthermore, by using a door structure 110 with a finger pinch prevention function, when the user opens and closes the door structure 110 of the booth 100, it is possible to prevent injuries caused by pinching fingers in the gap between the hinge end 2 and the vertical frame section 20.

[0059] According to the door structure 110 and the booth 100 using the door structure 110 of this embodiment, in a cross section perpendicular to the rotation axis R, the hinge-side end 2 has an arc shape centered on the rotation axis R in the range 2s on the second side RT and the internal space S2 side from the rotation axis R. Therefore, the distance D1 from the tip 3t ​​located at the firstmost side LT of the inner extension 3 to the hinge-side end 2 is maintained at a constant distance even when the door 10 rotates between the closed position P1 and the open position P2, and the user's fingers are prevented from being caught in the gap between the door 10 and the vertical frame 20 on the internal space S2 side. In addition, the opening stopper 6 of the vertical frame 20 contacts the projection 5 in the opening direction of the door 10 when the door 10 is in the open position P2. Therefore, the opening movement of the door 10 is restricted, and the door 10 does not open beyond the set opening angle.

[0060] As a result, it is possible to provide a door structure 110 having an opening stopper function and a finger pinching prevention function, and a booth 100 using the door structure 110.

[0061] 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.

[0062] (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, it can have an opening stopper function and a finger pinching prevention function.

[0063] (Modification 2) In the above embodiment, the booth 100 is equipped with a single-opening door structure 110, but the configuration of the booth is not limited thereto. The booth may be equipped with a double-opening door structure. If the booth is equipped with a double-opening door structure, for example, by providing a double-opening 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 an opening stopper function and a finger pinching prevention function, similar to the above embodiment.

[0064] (Variation 3) In the above embodiment, the retaining portion 7 is equipped with a sound-insulating material 7a, but the form of the retaining portion is not limited thereto. The retaining portion does not need to be equipped with a sound-insulating material 7a. In a door structure located in the closed position P1, even if the projection 5 contacts the retaining portion without the sound-insulating material 7a, the contact between the projection 5 and the retaining portion can restrict the rotational movement of the door portion 10 in the closing direction.

[0065] (Modification 4) In the above embodiment, the sound-insulating material 7a is placed on the retaining portion 7, but the form of the sound-insulating material 7a is not limited to this. The sound-insulating material may also be placed on the protrusion. For example, by covering and attaching a sheet-like sound-insulating material to the protrusion 5, the sound-insulating material can be placed on both the surface of the protrusion that contacts the retaining portion 6 and the surface that contacts the retaining portion. As a result, not only the impact noise when the protrusion contacts the retaining portion, but also the impact noise when the protrusion contacts the retaining portion 6 can be suppressed. [Explanation of Symbols]

[0066] 100 booths 110 Door structure 10 Door section 1. Door panel section 2 Hanging side end 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 First tip of the inner extension 4 Outer extension 4t Outer extension part, first tip 5. Protrusion 6. Opening stopper 7. Closure part 7a Soundproofing 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, The aforementioned end on the suspension side is, Having a projection extending to the second side, When the door portion is in the closed position, in a cross-section perpendicular to the axis of rotation, the area on the second side and the internal space side from the axis of rotation is in the shape of an arc centered on the axis of rotation. The vertical frame portion is provided with an opening stopper portion that contacts the projection in the opening direction of the door portion when the door portion is in the open position. Door structure.

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

3. 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 2.

4. The vertical frame portion is provided with a closing stopper portion that contacts the projection in the closing direction of the door portion when the door portion is in the closed position. The door structure according to claim 3.

5. The door portion is provided with a sound-insulating material positioned between the projection and the locking portion when the door portion is in the closed position, The projection contacts the closing portion via the sound-insulating material. The door structure according to claim 4.

6. 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 5 is attached to the opening of the box body, Equipped with, booth.

Images