JP2017210720A - Door system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door system that improves workability and sound insulation on a job site.SOLUTION: A door system 100, which is a door system for partitioning adjacent spaces, includes a hinged panel 5 that is formed like a plate, a door 7 that is arranged adjacently to the hinged panel 5 and openably/closably provided in the hinged panel 5, and a door end panel 6 that is arranged adjacently to the door end side of the door 7 and formed like a plate. The door 7 has a pair of surface materials that are arranged away from each other, a frame body that is arranged between the pair of surface materials, and a sound insulation member 40 that is arranged within the frame body.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a door system.

  2. Description of the Related Art Conventionally, in an apartment house such as a condominium or a detached house, an opening door that allows entry and exit between spaces such as adjacent living rooms is provided on a wall such as a partition. In the door, a door frame such as a vertical frame and an upper frame is fixed to a wall, and the door main body is attached to the vertical frame via an opening / closing tool such as a hinge.

  Further, there has been proposed a structure in which a door is attached to a wall, and a sound insulator in which a plurality of acoustic tubes are arranged adjacent to each other is provided on a side surface of the door and a portion facing the side surface of the door (Patent Document 1 below). reference).

JP 2012-67548 A

As a general construction method to install a door on the wall, fix the door frame on the partition wall with a fixing tool such as a screw at the construction site, install the door after attaching the door to the door frame and attaching the hinge. The method is known. In this method, there is a problem that it takes time for construction on site because various wooden fittings work such as fixing the door frame to the partition wall or attaching the door stop to the door frame.
Furthermore, in the configuration in which the sound insulator described in Patent Document 1 is provided, since the sound insulator is fixed to the wall and the door with a fixture such as an adhesive or a screw at the construction site, it takes more time for the construction at the site. There is a problem.

  Then, this invention is made | formed in view of the said situation, and provides the door system which improved the construction property and the sound-insulation property in the field.

In order to achieve the above object, the present invention employs the following means.
That is, the door system according to the present invention is a door system that partitions adjacent spaces, and is provided with a hanging panel formed in a plate shape, and is disposed adjacent to the hanging panel, so that the hanging panel can be opened and closed. And a door-end panel formed in a plate shape adjacent to the door-end side of the door, the door including a pair of surface materials arranged apart from each other, and the pair of door-side panels It has the frame body arrange | positioned between surface materials, and the sound-insulation member arrange | positioned in this frame body, It is characterized by the above-mentioned.

In the door system configured in this way, if the suspension panel, door and door panel are manufactured in advance at a factory, etc., the suspension panel, door and door panel will be transported at the construction site and adjacent to each other. It is possible to install a door that enables entry and exit between spaces and a wall that partitions the spaces simply by installing between the spaces. Therefore, the construction for attaching wooden products such as door frames and door covers to the walls that partition the spaces is omitted, and the workability on site is improved.
Furthermore, since the sound insulation member is disposed in the frame disposed between the pair of surface materials, the sound insulation of the door system is improved.

  In the door system according to the present invention, the sound insulating member may be a plate-like backing material provided on the surface of the surface material on the frame side.

  In the door system configured as described above, since the plate-like backing material is provided on the surface of the surface material on the frame body side, the mass of the door itself increases and the sound insulation is improved.

  Moreover, the door system which concerns on this invention WHEREIN: The said sound insulation member may be the damping material provided in the surface by the side of the said frame of the said surface material.

  In the door system configured as described above, since the vibration damping material is provided on the surface of the surface material on the frame body side, the vibration is suppressed by the vibration damping material and the sound insulation is improved.

  Further, in the door system according to the present invention, the sound insulating member is disposed between the surface materials, a core material in which a large number of voids are formed by a partition, and a sound absorbing material filled in the voids of the core material And may have.

  In the door system configured as described above, a core material in which a large number of voids are formed by partition walls is disposed between the surface materials, and a sound absorbing material is filled in the voids of the core material. Therefore, the rigidity of the door is enhanced by the core material, and the sound insulation is improved by the sound absorbing material.

  In addition, the door system according to the present invention includes an upper rail that is fixed to a ceiling side and that locks upper portions of the suspension panel and the door-end panel, and includes an edge of the door, the upper rail, and the suspension base. At least a part of the gap between the panel and the door-end panel may be provided with a blocking portion that closes the gap.

  In the door system configured as described above, since at least a part of the gap between the edge of the door and the upper rail, the suspension base panel, and the door end panel is provided with a closing portion for closing the gap, the gap The sound leakage from the door is suppressed, and the sound insulation of the door system is improved.

  In the door system according to the present invention, a ventilation gap may be formed between the lower end portion of the door and the floor surface, and a sound absorbing material may be provided at the lower end portion of the door.

  In the door system configured as described above, the sound passing through the ventilation gap between the lower end portion of the door and the floor surface is provided at the lower end portion of the door and is absorbed by the sound absorbing material. Is done.

  The door system according to the present invention is a door system that partitions adjacent spaces, and is provided with a hanging panel formed in a plate shape, and is disposed adjacent to the hanging panel, so that the hanging panel can be opened and closed. A door-side panel that is disposed adjacent to the door-end side of the door and is formed in a plate shape, and a first noise reduction mechanism that is disposed at the edge of the door and has a U-shape in a vertical sectional view. The first noise reduction mechanism is disposed along an edge of the door, and a first opening forming wall portion formed with a first opening penetrating inward of the door; and A partition wall provided on the first opening forming wall and extending from both sides of the door in the plate thickness direction of the first opening toward the inside of the door may be included.

  In the door system configured as described above, the edge of the door and the gap around the door are narrow with respect to the wavelength of the sound wave, and the surface facing the door edge (the ceiling surface, the floor surface, the side surface of the suspension panel, the door When the sound pressure reflectivity of the side panel of the front panel is high, the first noise reduction mechanism having the first opening causes the acoustic impedance ratio of a part of the door edge to be almost zero, and the transmitted sound is reduced. The

  Further, the door system according to the present invention is fixed to the ceiling side, arranged on the upper rail that locks the upper part of the suspension panel and the door-end panel, and the lower surface of the upper rail, and is U-shaped in a vertical cross-sectional view. The first noise reduction mechanism is disposed at the upper end portion of the door, and the second noise reduction mechanism is disposed along the lower surface of the upper rail and is directed upward. A second opening forming wall having a second opening penetrating therethrough, and an inner side of the upper rail from both sides of the second opening in the plate thickness direction of the door. The first noise reduction mechanism and the second noise reduction mechanism face the first opening and the second opening in a state where the door is closed. It may be arranged to make it.

  In the door system configured as described above, the first noise reduction mechanism and the second noise reduction mechanism are arranged to face each other so that the first opening and the second opening face each other. The acoustic impedance ratio of a part of the lower surface of the upper rail becomes almost zero, and the transmitted sound is reduced.

  According to the door system according to the present invention, it is possible to improve on-site workability and sound insulation.

BRIEF DESCRIPTION OF THE DRAWINGS (a) Front view which shows the door system which concerns on one Embodiment of this invention, (b) It is an expanded sectional view of a core material part. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG. The door system which concerns on the modification of one Embodiment of this invention is shown, (a) Sectional drawing cut | disconnected in the location corresponded to BB, (b) It is sectional drawing of a 1st noise reduction mechanism and a 2nd noise reduction mechanism. is there.

A door system according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1A is a front view showing a door system according to an embodiment of the present invention, and FIG. 1B is an enlarged cross-sectional view of a core part. FIG. 2 is a cross-sectional view taken along the line AA of FIG. 3 is a cross-sectional view taken along line BB in FIG. 4 is a cross-sectional view taken along the line CC of FIG.

  As shown in FIGS. 1 to 4, the door system 100 is installed, for example, in an apartment house such as a condominium or an apartment, and partitions spaces P1 and P2 such as adjacent living rooms. The door system 100 can be installed in a general house such as a detached house.

  The door system 100 includes an upper rail 1, a lower rail 2, a suspension panel 5, a door-end panel 6, and a door 7.

  The upper rail 1 is provided on the ceiling side, and is continuously disposed on the upper side of the suspension panel 5, the door 7 and the door end panel 6.

  As shown in FIG. 4, the upper rail 1 is disposed along the ceiling surface D and formed in a rectangular shape in cross section, and a rectangular shape in cross section provided on the lower surface 11B of the upper mounting portion 11. An upper rail portion 12.

  The upper mounting portion 11 and the upper rail portion 12 are made of, for example, wood or steel. The upper rail portion 12 is fixed to the upper mounting portion 11 by adhesion or a fixture (not shown).

  In the present embodiment, the cross-sectional dimensions of the upper mounting portion 11 are, for example, a width of 50 mm and a height of 60 mm. A concave portion (not shown; the same applies hereinafter) is provided on the lower surface 11B of the upper mounting portion 11, and the upper rail portion having a rectangular shape in cross section is fitted into the concave portion, and the upper rail portion is the lower surface 11B of the upper mounting portion 11. It may be provided so as to protrude downward.

  As shown in FIG. 3, in the place where the door 7 is installed, the upper rail 1 is provided with only the upper mounting portion 11, and the upper rail portion 12 is not provided.

As shown in FIG. 4, the upper surface 11 </ b> U of the upper mounting portion 11 may be provided with an elastic material 16 made of a rubber material or the like. The upper mounting portion 11 provided with the elastic material 16 is fixed to the ceiling surface D with a fixing tool 11X such as a screw. The elastic material 16 is configured so that no gap is generated between the ceiling surface D and the upper rail 1. The elastic material 16 may be provided continuously on the upper side of the suspension base panel 5, the door 7 and the door end panel 6.
The upper rail 1 is fixed to the ceiling surface D with a fixing tool (not shown) such as a screw so as to penetrate the upper mounting portion 11 and the elastic material 16 from below the upper rail portion 12. May be.

  Further, at the place where the hanging panel 5 and the door panel 6 are installed, a rubber gasket 17 is provided on the lower surface 11B of the upper mounting portion 11 along the extending direction of the upper mounting portion 11. . The gasket 17 is provided on both sides (both sides in the thickness direction of the partition panel 3) with the upper rail portion 12 interposed therebetween.

  The lower rail 2 is provided on the floor side, and is continuously disposed below the suspension panel 5 and the door-end panel 6.

  The lower rail 2 is provided on the floor surface side. The lower rail 2 is disposed along the floor surface F and has a lower support portion 21 formed in a rectangular shape in cross section, and a lower rail portion 22 provided in an upper surface 21U of the lower support portion 21 and formed in a rectangular shape in cross section. ,have. The lower support portion 21 and the lower rail portion 22 are made of, for example, wood or steel.

  An elastic material 26 made of a rubber material or the like may be provided on the lower surface 21 </ b> B of the lower support portion 21. The lower rail 2 is fixed to the floor surface F through the lower support portion 21 and the elastic member 26 with a fixture 22X such as a screw from above the lower rail portion 22. The elastic material 26 is configured so as not to cause a gap between the floor surface F and the lower rail 2.

  In this embodiment, the cross-sectional dimensions of the lower support portion 21 are, for example, a width of 50 mm and a height of 35 mm. A recess (not shown; the same applies hereinafter) is provided on the upper surface 21U of the lower support portion 21, a lower rail portion having a rectangular shape in cross section is fitted into the recess, and the lower rail portion is an upper surface 21U of the lower support portion 21. It may be provided so as to protrude upward from the head.

  The suspension panel 5 and the door end panel 6 are formed in a plate shape. The hanging panel 5 and the door-end panel 6 include a four-sided frame 30 formed in a four-sided frame shape, a sound insulation member 40 provided inside the four-sided frame 30, and a surface material 46 provided on both sides of the four-sided frame 30. ,have. In this embodiment, the dimensions of the suspension panel 5 and the door-end panel 6 are, for example, a width of 250 mm, a height of 2395 mm, and a thickness of 60 mm.

  The four-way frame 30 includes an upper rail 31, a lower rail 34, and a vertical rail 37 that connects the end of the upper rail 31 and the end of the lower rail 34 in the vertical direction.

  The upper crosspiece 31 is formed in a rectangular shape in cross section, and an upper concave groove 32 that is recessed downward is formed on the upper surface 31U. The upper concave groove 32 is formed along the extending direction of the upper rail 31.

  The upper rail portion 12 of the upper rail 1 is fitted in the upper concave groove 32. A gap 31S is formed between the upper surface 31U of the upper bar 31 and the lower surface 11B of the upper mounting portion 11. The vertical direction of the gap 31 </ b> S is blocked by the gasket 17 provided in the upper mounting portion 11 of the upper rail 1.

  The lower rail 34 is formed in a rectangular shape in cross section, and a lower concave groove 35 that is recessed upward is formed on the lower surface 34B. The lower concave groove 35 is formed along the extending direction of the lower rail 34.

  A sliding material (not shown) is provided on the lower surface of the lower groove 35. A plurality of sliding materials are provided apart from each other in the extending direction of the lower rail 34. The lower rail portion 22 of the lower rail 2 is fitted into the lower concave groove 35, and the sliding material is in contact with the upper surface of the lower rail portion 22.

  The vertical rail 37 disposed on the door 7 side is provided with a door stop portion 37A that protrudes toward the door 7 side. The door contact portion 37A is provided on the side opposite to the side Q on which the door 7 opens in the prospective direction.

  37 A of door stop parts are provided with the gasket (blocking part) 38 comprised with the rubber material, the resin material, etc. which block | close the clearance gap with the door 7. FIG. A gap 38 </ b> S between the door stopper 37 </ b> A and the end of the door 7 is closed by the gasket 38. In FIG. 2, the vertical rail 37 disposed on the door 7 side is configured by two divided in the thickness direction of the door 7, but may be integrally configured by one.

  Further, a side groove 39 that is recessed inward is formed on the side surface of the vertical beam 37 of the suspension panel 5 that is disposed adjacent to the wall W. The side groove 39 is formed along the extending direction of the vertical rail 37.

  An actual fruit 51 is fitted between the side groove 39 and the wall portion W. The short fruit 51 may be fixed to the wall W by a fixing tool (not shown) such as a screw.

  The sound insulating member 40 includes a honeycomb material (core material) 42 in which a large number of voids 41S are formed by the partition walls 41, and a sound absorbing material 43 filled in the voids 41S of the honeycomb material 42. The sound insulating member 40 is disposed over the entire space surrounded by, for example, the upper rail 31, the lower rail 34, and the surface material 46. In addition, when the sound insulation performance is not so required, the structure in which the sound insulation member 40 is not provided in the four-sided frame 30 or the honeycomb material 42 is provided and the sound absorbing material 43 is not provided. Also good.

  The honeycomb material 42 is formed in a hexagonal honeycomb shape in a sectional view, for example, with paper or resin material. The sound absorbing material 43 is made of, for example, foaming resin or the like, and is filled in the gap 41S without a gap. The core material is not limited to a hexagonal shape in cross section, and may have a circular shape in cross section, a quadrangle, or the like as long as a large number of voids 41S are formed.

  The surface material 46 is a plate material to which makeup is applied, and for example, a decorative plate to which an olefin sheet is attached can be adopted.

  As shown in FIG. 3, the door 7 is formed in a plate shape. The door 7 includes a four-sided frame (frame body) 70, a sound insulation member 40 provided inside the four-sided frame 70, and a surface material 80 provided on both surfaces of the four-sided frame 70. The door 7 is attached to the vertical beam 37 of the suspension panel 5 so as to be freely opened and closed by a hinge (not shown).

  The four-sided frame 70 has a pair of upper bars 71 and 72 provided on the upper portion of the door 7. The upper upper bar 71 is provided with a gasket (blocking portion) 73 made of a rubber material, a resin material, or the like. The vertical direction of the gap 31 </ b> S between the upper surface 7 </ b> U of the upper rail 71 and the lower surface 11 </ b> B of the upper mounting portion 11 is blocked by the gasket 73. In addition, the height dimension of the clearance gap 31S is about 10 mm, for example.

  The four-sided frame 70 has a lower bar 75 provided on the lower side of the door 7. A sound absorbing material 76 is provided at the lower portion of the lower rail 75. As the sound absorbing material 76, glass wool or the like can be adopted.

A perforated plate 77 in which a vertical through hole is formed is provided below the sound absorbing material 76. A ventilation gap 77S is formed between the perforated plate 77, which is the lower end of the door 7, and the floor surface F. The height of the ventilation gap 77S is, for example, about 10 to 15 mm.
A mohair (not shown) formed in a hair shape may be provided on the lower side of the perforated plate 77 to block a predetermined amount of the air gap 77S between the lower surface 7B of the door 7 and the floor surface F.

  In addition, the sound insulation member 40 is provided inside the four-sided frame 70 in the same manner as the suspension panel 5 and the door-end panel 6.

Next, the construction method of the door system 100 will be described.
First, the elastic material 16 is attached to the upper surface 11U of the upper mounting portion 11 of the upper rail 1, and the elastic material 26 is attached to the lower surface 21B of the lower support portion 21 of the lower rail 2. Further, a gasket 73 is stuck on the upper surface 7U of the door 7.

  And the upper attachment part 11 of the upper rail 1 to which the elastic material 16 was stuck is fixed to the ceiling surface D with the fixing tool 11X. At this time, the upper rail portion 12 is fixed to the lower surface of the upper rail 1 at the place where the suspension panel 5 and the door end panel 6 are installed.

  Gaskets 17 are attached to both sides of the upper rail portion 12 on the lower surface 11B of the upper mounting portion 11 of the upper rail 1. The gasket 17 may be attached to the upper attachment portion 11 before the upper rail 1 is fixed to the ceiling surface D.

  Moreover, the lower rail 2 to which the elastic material 26 is affixed is fixed to the floor surface F with the fixture 22X at the place where the hanging panel 5 and the door-end panel 6 are installed.

  Next, a suspension panel 5, a door-end panel 6 and a door 7 which are manufactured in advance at a factory or the like are prepared. The suspension panel 5 is disposed on the end (in the opposite side to the wall W) side in the extending direction of the upper rail 1 and the lower rail 2. The upper rail portion 12 of the upper rail 1 and the lower rail portion 22 of the lower rail 2 are fitted into the upper concave groove 32 and the lower concave groove 35 of the hanging panel 5, respectively, and along the upper rail 1 and the lower rail 2, The panel 5 is slid to a predetermined position. At this time, since a sliding material (not shown) is provided at the lower end portion of the suspension panel 5, it is easy to slide.

  The fruit 51 is finally fitted into the side groove 39 of the hanging panel 5, and the hanging panel 5 is brought into contact with the wall W.

  The door 7 is fixed to the vertical beam 37 of the hanging panel 5 via a hinge. Next, the door end panel 6 is also slid to a predetermined position in the same manner as the hanging panel 5.

  The suspension panel 5 and the door end panel 6 are fixed to the upper rail 1 and the lower rail 2 respectively by angles (not shown) provided at the upper and lower ends.

  In this way, the suspension base panel 5, the door 7, and the door end panel 6 are installed. In addition, the up-down direction of the clearance 31 </ b> S between the upper rail 1 and the upper end portion of the suspension panel 5, the door 7, and the door end panel 6 is closed by the gasket 17.

  In addition, when the height of the clearance 31S between the upper surface 31U of the hanging panel 5 and the door-end panel 6 and the lower surface 11B of the upper mounting portion 11 of the upper rail 1 is sufficiently high, the hanging panel 5 and the door-end After the upper rail portion 12 of the upper rail 1 is fitted in the upper concave groove 32 of the panel 6 and the suspension panel 5 and the door-end panel 6 are lifted upward, the lower rail portion 22 is fitted in the lower concave groove 35 and moved downward. It is possible to move the suspension base panel 5 and the door end panel 6 to the upper rail 1 and to support the lower rail 2 with the upper rail 1. When the suspension base panel 5 and the door end panel 6 are lifted upward, the rubber gasket 17 is elastically deformed and compressed, but when the suspension base panel 5 and the door end panel 6 are moved downward, Returning to the original state, the vertical direction of the gap 31 </ b> S is closed by the gasket 17.

  In the door system 100 configured as described above, if the suspension panel 5, the door 7, and the door-end panel 6 are manufactured in advance at a factory or the like, the suspension panel 5, the door 7 and the door-end panel at the construction site. 6 can be carried and the wall which partitions between the space P1 and P2 which enables the entrance / exit between the spaces P1 and P2 can be installed only by installing between the adjacent spaces P1 and P2. . Therefore, the construction of attaching wooden products such as door frames and door covers to the walls that partition the spaces P1 and P2 is omitted, and the workability on site is improved.

  Further, in the door 7, a honeycomb material 42 in which a large number of voids 41 </ b> S are formed by the partition walls 41 is disposed in a portion surrounded by the surface material 80 on both sides of the four-sided frame 70, and the sound absorption is provided in the voids 41 </ b> S. The material 43 is filled. Therefore, the rigidity of the door 7 is enhanced by the honeycomb material 42 and the sound insulation is improved by the sound absorbing material 43.

  Further, a gap 31 </ b> S between the upper surface 7 </ b> U of the upper rail 71 and the lower surface 11 </ b> B of the upper mounting portion 11 is closed by the gasket 73 provided on the upper rail 71 of the door 7. Further, the gap 38 </ b> S between the door stop portion 37 </ b> A and the end portion of the door 7 is closed by the gasket 38 provided in the door stop portion 37 </ b> A of the hanging panel 5 and the door end panel 6. Therefore, sound leakage from the gaps 31S and 38S is suppressed, and the sound insulation of the door system 100 is improved.

  In addition, since a sound absorbing material 76 is provided at the lower part of the lower rail 75 of the door 7, the sound passing through the air gap 77 </ b> S passes through the perforated plate 77 and is absorbed by the sound absorbing material 76. Is improved.

(Modification)
Next, a modification of the embodiment described above will be described mainly with reference to FIG.
As shown in FIG. 5, in the door system 100 </ b> X, first noise reduction mechanisms 110 are provided at the upper and lower ends of the door 7. The upper mounting portion 11 of the upper rail 1 is provided with a second noise reduction mechanism 120 where the door 7 is installed.

  The first noise reduction mechanism 110 has a U-shape in a vertical sectional view along the thickness direction of the door 7. The first noise reduction mechanism 110 includes a pair of opposing side wall portions 111, a bottom wall portion 112 that connects one end of the pair of side wall portions 111, and a first opening formed at the other end of the pair of side wall portions 111. Wall part 113. The side wall part 111, the bottom wall part 112, and the first opening forming wall part 113 are orthogonal to each other.

  The first opening forming wall 113 is formed with a first opening 114 penetrating in the thickness direction of the first opening forming wall 113. The first opening forming wall 113 is provided with a partition wall 115 extending from the both sides of the first opening 114 in the plate thickness direction of the door 7 toward the bottom wall 112.

  A slit-like opening 116 is formed along the first opening 114 and the pair of partition walls 115.

  At the upper end portion of the door 7, the bottom wall portion 112 is brought into contact with the upper rail 72, and the first opening forming wall portion 113 is disposed along the upper surface 7 U of the door 7. The slit-shaped opening 116 opens in the vertical direction and extends in the width direction of the door 7.

  At the lower end of the door 7, the bottom wall 112 is brought into contact with the lower rail 75, and the first opening forming wall 113 is disposed along the lower surface 7 </ b> B of the door 7. The slit-shaped opening 116 opens in the vertical direction and extends in the width direction of the door 7.

  Similar to the first noise reduction mechanism 110, the second noise reduction mechanism 120 has a pair of side wall parts 121, a bottom wall part 122, and a second opening forming wall part 123.

  The second opening forming wall portion 123 is formed with a second opening portion 124 penetrating in the thickness direction of the second opening forming wall portion 123. The second opening forming wall portion 123 is provided with a partition wall portion 125 extending from both sides of the door 7 of the second opening portion 124 in the plate thickness direction (thickness direction of the upper rail 1) toward the bottom wall portion 122.

  A slit-like opening 126 is formed along the second opening 124 and the pair of partition walls 125.

  A second opening forming wall portion 123 is arranged on the upper rail 1 along the lower surface 11 </ b> B of the upper rail 1. The slit-shaped opening 126 opens in the vertical direction and extends in the width direction of the door 7.

  The first noise reduction mechanism 110 and the second noise reduction mechanism 120 are arranged so that the first opening 114 and the second opening 124 face each other with the door 7 closed.

  As shown in FIG. 5B, in an example of the dimensions of the first noise reduction mechanism 110 and the second noise reduction mechanism 120, the length dimension B of the side wall portions 111 and 121 is 30 mm, and the length of the bottom wall portions 112 and 122 The length C is 30 mm, the width a of the first opening 114 and the second opening 124 is 10 mm, and the length l of the partition walls 115 and 125 is 5 mm.

  Next, the principle of the noise reduction method by the first noise reduction mechanism 110 and the second noise reduction mechanism 120 will be described. Here, the first noise reduction mechanism 110 and the second noise reduction mechanism 120 are collectively referred to as a noise reduction mechanism.

  In general, when noise propagates through a space, if the cross section of the space (the plane perpendicular to the noise propagation direction) is less than half the noise wavelength, the noise is one-dimensional as a plane wave in the gap. Propagate to.

  A noise source is present in one space (P1 or P2) across the door 7, and noise from the noise source is propagated to the other space (P2 or P1).

  It is assumed that the upper surface 7U of the door 7, the lower surface 11B of the upper mounting portion 11, and the floor surface F are in an acoustically soft state. In an acoustically soft state, that is, when the acoustic impedance ratio in the upper surface 7U of the door 7, the lower surface 11B of the upper mounting portion 11 and the floor surface F is 0, noise propagated from the upstream side is reflected upstream and downstream. It is known not to propagate to the side.

  When each dimension of the noise reduction mechanism is sufficiently small with respect to the wavelength, the acoustic impedance ratio Z in the slit-shaped openings 116 and 126 can be obtained by the following equation (1).

However, f represents the frequency of noise, c represents the speed of sound, and ρ represents the medium (air) density. Vn is the volume of air other than the hatched portion in FIG. 5B surrounded by the slit-shaped openings 116 and 126 and the partition walls 115 and 125, and is expressed by the following equation (2) in relation to the opening end correction. Calculated. It should be noted that the second term in {} in Equation (2) is a term related to opening end correction. 5B corresponds to an air layer of a noise reduction mechanism that functions as a resonator.
Note that B, C, a, and l in the following equations are the dimensions of the portion shown in FIG. A is the extension length (length in the width direction of the door 7) of the noise reduction mechanism.

  V is the volume of the cavity of the noise reduction device (volume of the air layer), and is calculated by the following equation (3).

  S is the area of the slit-like opening and is calculated by the following equation (4).

  R in the first term on the right side of Equation (1) is an acoustic resistance such as friction generated between the surfaces of the partition walls 115 and 125 of the noise reduction device functioning as a resonator and the air. When the partition portions 115 and 125 are made of a material having a smooth surface such as a metal, the acoustic resistance r has an extremely small value, and the acoustics at the openings of the slit-shaped openings 116 and 126 at the resonance frequency f satisfying the following equation (5). The impedance ratio Z is almost zero.

  When two noise reduction devices functioning as such resonators are arranged opposite to the upper rail 1 and the upper end of the door 7, the opposed slit-like openings 116 and 126 are acoustically soft at the above-mentioned frequency. Thus, the noise having the frequency f propagating from the upstream side is reflected upstream and does not propagate downstream. That is, the noise incident from the space side on the noise source side is suppressed from passing through the gap 31 </ b> S between the upper surface 7 </ b> U of the door 7 and the lower surface 11 </ b> B of the upper mounting portion 11 in the upper portion of the door 7.

  Further, in the lower part of the door 7, when the air gap 77 </ b> S is short with respect to the wavelength of the sound wave of the noise and the sound pressure reflectivity of the floor surface F is mutually, similarly, the noise passes through the air gap 77 </ b> S. Is suppressed.

Further, a backing material 81 such as a board material or a plywood is provided on the back surface (surface on the four-sided frame 70 side) of the surface material 80 of the door 7. The backing material 81 is disposed such that the upper end portion contacts the upper rail 72 of the door 7 and the lower end portion contacts the lower rail 75. By providing the backing material 81, the mass of the face material increases together with the surface material 80, so that the sound insulation is improved.
In addition, if there is a gap between the backing material 81 and the upper rail 72 of the door 7 and between the lower rail 75, generally, the overall sound insulation performance is reduced by the transmitted sound from the gap. In the present invention, the backing material 81 is arranged so that there is no gap between the upper end portion thereof and the upper crosspiece 72 and between the lower end portion and the lower crosspiece 75, thereby preventing a decrease in sound insulation performance due to transmitted sound. Is done.
The backing material 81 is preferably provided on both of the pair of surface materials 80, but may be provided only on one surface material 80.

  It should be noted that the assembly procedure shown in the above-described embodiment, or the shapes and combinations of the constituent members are examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention.

For example, a damping material (not shown) may be provided on the back surface of the surface material 80 of the door 7 as the sound insulating member 40. A rubber-based, alloy-based, asphalt-based, or polymer-based damping member may be attached to the back surface of the surface material 80 like the backing material 81. Alternatively, a vibration-damping coating (coating-type vibration-damping material) composed of synthetic resins, natural resins, polymer materials such as rubber, plasticizers, auxiliary agents such as effect accelerators, solvents, fillers, foaming agents, coloring pigments, etc. ) May be painted on the back surface of the surface material 80. When the vibration-damping coating layer formed by these coatings is stretched and deformed, it is converted into thermal energy, and vibration can be suppressed. Moreover, the damping paint which has an acrylic resin and the inorganic particle for converting a vibration into frictional heat as a main component may be sufficient. These damping members and damping coating improve the sound insulation.
The damping material is preferably provided on both of the pair of surface materials 80, but may be provided only on one surface material 80.

DESCRIPTION OF SYMBOLS 1 ... Upper rail 2 ... Lower rail 5 ... Hanging origin panel 6 ... Door-end panel 7 ... Door 31S ... Gap 38 ... Gasket (blocking part)
38S ... Gap 40 ... Sound insulation member 41 ... Partition wall 42 ... Honeycomb material (core material)
43 ... Sound absorbing material 70 ... Four-sided frame (frame)
73 ... gasket (blocking part)
76 ... Sound absorbing material 77S ... Ventilation gap 80 ... Surface material 81 ... Backing material 100 ... Door system 110 ... First noise reduction mechanism 113 ... First opening forming wall 114 ... First opening 115 ... Partition 120 ... Second Noise reduction mechanism 123 ... second opening forming wall 124 ... second opening 125 ... partition wall D ... ceiling surface F ... floor surfaces P1, P2 ... space W ... wall portion

Claims (8)

A door system that partitions adjacent spaces,
A hanging panel formed in a plate shape;
A door disposed adjacent to the suspension panel and provided to the suspension panel so as to be openable and closable;
A door-end panel disposed adjacent to the door-end side of the door and formed in a plate shape,
The door
A pair of surface materials spaced apart from each other;
A frame disposed between the pair of surface materials;
And a sound insulation member disposed in the frame.   The door system according to claim 1, wherein the sound insulating member is a plate-like backing material provided on a surface of the surface material on the frame body side.   The door system according to claim 1, wherein the sound insulating member is a vibration damping material provided on a surface of the surface material on the frame body side. The sound insulation member is
A core material disposed between the surface materials and having a plurality of voids formed by partition walls; and
The door system according to claim 1, further comprising: a sound absorbing material filled in the gap portion of the core material. An upper rail fixed to the ceiling side and locking the upper part of the suspension panel and the door-end panel,
2. A closing portion that closes the gap is provided at least at a part of the gap between the edge of the door and the upper rail, the suspension base panel, and the door end panel. The door system as described in any one of 1-4. A ventilation gap is formed between the lower end of the door and the floor surface,
The door system according to any one of claims 1 to 5, wherein a sound absorbing material is provided at a lower end portion of the door. A door system that partitions adjacent spaces,
A hanging panel formed in a plate shape;
A door disposed adjacent to the suspension panel and provided to the suspension panel so as to be openable and closable;
A door-end panel formed adjacent to the door-end side of the door and formed in a plate shape;
A first noise reduction mechanism disposed at the edge of the door and having a U-shape in a vertical sectional view,
The first noise reduction mechanism is:
A first opening forming wall portion formed along the edge of the door and formed with a first opening penetrating inward of the door;
A partition wall provided on the first opening forming wall and extending from both sides of the door in the plate thickness direction of the first opening toward the inside of the door. The door system as described in any one of 6. An upper rail fixed to the ceiling side and locking the upper part of the suspension panel and the door-end panel;
A second noise reduction mechanism disposed on the lower surface of the upper rail and having a U-shape in a vertical section view;
The first noise reduction mechanism is disposed at an upper end portion of the door,
The second noise reduction mechanism is:
A second opening forming wall portion formed along the lower surface of the upper rail and formed with a second opening portion penetrating upward;
A partition wall provided on the second opening forming wall and extending from both sides of the door in the plate thickness direction of the second opening toward the inside of the upper rail,
The first noise reduction mechanism and the second noise reduction mechanism are arranged so that the first opening and the second opening are opposed to each other with the door closed. The door system according to claim 7.

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