JPH09184377A - Sound insulation door unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate height regulation at the time of fitting, to improve abrasion resistance and also to enable smooth execution of an opening-closing operation of a door. SOLUTION: A sound insulation door unit 10 is provided at a doorway formed in a partition wall body of an acoustic room. The sound insulation door unit 10 is constructed by hanging a door main body 30 in a door frame 20 so that it can be opened and closed, while the surface of a bottom frame 22 of the door frame 20 is formed to be flat and so disposed as to be at almost the same level as a floor surface of the acoustic room. On the lower end face 30A of this door main body 30, a pair of front and rear tongue-shaped packings 31 which are brought into contact with the surface 22A of the bottom frame 22 of the door frame main body 20 and can absorb a rotating force of a door and the vibration of sound are provided in the direction X of opening and closing of the door with a prescribed space L between them. A cushion member 35 is fitted in each of these packings 31.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproof door unit installed at an entrance of an acoustic room such as a listening room or a home theater, and more particularly to a packing between a lower frame surface of a door frame and a lower end surface of a door body. By devising the contact area through the door, it is possible to easily adjust the height when assembling the door body to the door frame, improve wear resistance, and smoothly open and close the door. It was done like this.

[0002]

2. Description of the Related Art Conventionally, at the entrance and exit of such an acoustic room,
The applicant of the present invention filed and published the actual application, Kaikaihei 6-71870
As disclosed in Japanese Patent Laid-Open Publication No. 2004-53242, there is a structure having a soundproof door unit installed.

In this type of soundproof door unit, as shown in FIG. 5, a door frame b is installed in an entrance formed in a partition wall a of an acoustic chamber, and the lower frame surface of the door frame b is placed on the floor surface. A flat surface is formed so as to be substantially flush with F, and a door main body c is suspended in the door frame b so that the door main body c can be opened and closed. -Shaped packings d, d with a predetermined distance L in the door opening / closing direction X
The soundproofing effect is enhanced by bringing the packings d and d into contact with the lower frame surface of the door frame b in the door closed state to absorb the door rotational force and the vibration of the sound.

[0004]

However, in the soundproof door unit having the above-described conventional structure, when the door body c is assembled to the door frame b, the lower frame surface of the door frame b and the door body c are assembled. If there is a dimensional error in the mounting height H between the lower end surface and the bottom surface, the packings d and d have a tongue-like shape.
Although it is possible to adjust to the lower side of the mounting height H, it is not possible to adjust to the higher side.

Moreover, such a door frame b and a door body c
In the assembling form with, since the contact surfaces of the packings d and d with the lower frame surface of the door frame b are easily worn, the frictional resistance force at the time of opening and closing the door becomes large, and the door opening and closing operation cannot be performed smoothly. Moreover, there is a problem that the packings d and d are worn out and damaged.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide a soundproof door unit which facilitates height adjustment during assembling, improves abrasion resistance, and enables smooth door opening / closing operation. To provide.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention hangs a door main body on a door frame installed at a doorway formed in a partition wall of an acoustic chamber so as to be openable and closable by a hinge member. At the same time, the lower end surface of the door body is provided with a pair of front and rear tongue-shaped packings that are in contact with the lower frame surface of the door frame to absorb the door rotation force and sound vibration in a predetermined direction in the door opening and closing direction. A sound proof that is provided with a space, and the packing is in contact with the door closed when the lower frame surface of the door frame is formed into a flat surface and is arranged substantially flush with the floor surface of the acoustic room. In the door unit, a cushion member is interposed in the packing.

In this case, as the cushion member,
A sponge-like foam is preferably used, and a lubricating tape is attached to the lower frame surface of the door frame. As the lubricative tape, an ultra-high molecular polyethylene tape whose lubricating performance is not deteriorated even when worn is preferably used.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings shown in FIGS. 1 to 4. As shown in FIG. A doorway 2 is formed in the partition body 1, and a soundproof door unit 10 is installed in the doorway 2.

The soundproof door unit 10 has a structure in which a metal door body 30 made of a single-opening soundproof door is hung openably and closably via a hinge member 40 in a door frame 20 made of, for example, an aluminum sash.

The door frame 20 is shown in FIGS.
As shown in, the upper and lower frames 21, 22 and the left and right side frames 23,
The upper frame 21 and the left and right side frames 23, 23 are formed into a frame, and the door stop portions 21A and 23A, 2
3A is formed to project, and hollow packings 24, 25, 25 are attached to the door-contacting surfaces of the respective door-contacting portions 21A and 23A, 23A.

Further, the surface 2 of the lower frame 22 of the door frame 20.
2A is formed on a flat surface, has a lubricating tape 26 attached thereto, and is arranged so as to be substantially flush with the floor surface F of the acoustic chamber.

Further, the lower end surface 30A of the door body 30
4 includes a pair of front and rear packings 31, 3
1 is provided at a predetermined interval L in the door opening / closing direction X,
Each of these packings 31 is formed of a mounting piece 32 and a tongue piece portion 33 that is integral with the mounting piece portion 32, and an opening portion 34 formed of the mounting piece portion 32 and the tongue piece portion 33 is used to open the door. The cushion member has a tongue-like shape with a cross section of "F" so that spring back does not occur when the door is opened, and the cushion member is made of a sponge-like foam inside. It has a configuration in which 35 is interposed.

That is, according to the present invention, by adopting the above configuration, the soundproof door unit 10 is installed in the entrance / exit 2 formed in the partition wall 1 of the acoustic chamber, and the door main body is installed in the door frame 20 of the soundproof door unit 10. 30 is hung openably and closably, and a pair of front and rear tongue-shaped packings 31, 31 are provided on the lower frame surface 22A of the door frame 20 on the lower end surface 30A of the door main body 30. The tongue pieces 33, 33 of the respective packings 31, 31 come into contact with the lower frame surface 22A of the door frame 20, and the door rotational force and sound vibration can be absorbed.

Further, since the cushion member 35 is interposed inside each of the packings 31, 31, when the door body 30 is assembled to the door frame 20, the lower frame surface 22A of the door frame 20 is assembled. Even if there is a dimensional error in the assembly height H between the lower end surface 30A of the door body 30 and the cushion member 3
By elastically crushing and deforming 5, the dimensional error can be absorbed, and the height can be easily adjusted.

Further, since the lubricating tape 26 is additionally provided on the lower frame surface 22A of the door frame 20, the frictional resistance force at the time of opening and closing the door is reduced, and the door opening and closing operation can be performed smoothly, and the packing 31, The contact surface of 31 is prevented from being worn, and the packings 31 and 31 are not damaged by fraying as before, and the durability can be improved.

[0017]

As described above, according to the present invention, a soundproof door unit is installed at the entrance and exit formed in the partition wall of the acoustic room, and the door body is hung openably and closably in the door frame of the soundproof door unit. In addition, since a pair of front and rear tongue-shaped packings are provided on the lower surface of the door frame on the lower end surface of the door body, the tongues of each of these packings are attached to the lower frame of the door frame when the door is closed. It can contact the surface and absorb the door rotation force and sound vibration.

Further, since a cushion member is provided in each packing, a space between the lower frame surface of the door frame and the lower end surface of the door body is assembling when the door body is assembled to the door frame. Even if there is a dimensional error in the assembling height, the dimensional error can be absorbed by the resilience due to the elasticity of the cushion member, and thus the height adjustment can be easily performed.

Further, in claim 2, since the lower surface of the door frame is provided with the lubricating tape, the frictional resistance at the time of opening and closing the door is reduced, and the door opening and closing operation can be smoothly performed. It is possible to prevent the contact surface of the packing from being worn, and prevent the packing from being damaged due to fraying of the packing, and to improve the durability.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view showing an embodiment of a soundproof door unit according to the present invention.

FIG. 2 is an enlarged vertical sectional view taken along the line AA of FIG.

3 is an enlarged cross-sectional view taken along the line BB of FIG.

FIG. 4 is an enlarged explanatory view of a main part showing the opened / closed state of the door body.

FIG. 5 is an enlarged explanatory view of a main part showing an opened / closed state of a door body in a conventional soundproof door unit.

[Explanation of symbols]

1 ... Sound room partition wall, 2 ... Doorway, 10 ... Soundproof door unit, 20 ... Door frame, 22 ... Lower frame, 22A ...
… Surface, 26 …… Lubricating tape, 30 …… Door body, 3
0A ... Lower end face, 31,31 ... Packing, 33,33
...... Tongue part, 35, 35 …… Cushion member, 40 ……
Hinge member, L ... packing spacing, X ... Door opening / closing direction, F ... Floor surface.

Claims (2)

[Claims] 1. A door main body is hung openably and closably by a hinge member in a door frame installed at an entrance formed in a partition wall of an acoustic chamber, and a lower end surface of the door main body is provided with a door frame of the door frame. A pair of front and rear tongue-shaped packings, which can contact the lower frame surface and absorb the door rotation force and sound vibration, are provided at a predetermined interval in the door opening / closing direction, and these packings are in contact with each other when the door is closed. In a soundproof door unit in which the lower frame surface of the door frame is formed into a flat surface and arranged substantially flush with the floor surface of the acoustic room, a cushion member is interposed in the packing. Characteristic soundproof door unit. 2. The soundproof door unit according to claim 1, wherein a lubricating tape is attached to the surface of the lower frame of the door frame.