JP2578064Y2 - Soundproof door - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door-type soundproof door used as an entrance of a soundproof room or the like that requires sound insulation between indoor and outdoor areas.

[0002]

2. Description of the Related Art In order to obtain a high soundproofing performance with this kind of soundproof door, it is indispensable not only that the soundproofing performance of the door panel itself is high, but also that the gap between the door panel and the door frame is made as small as possible. For this reason, in the conventional soundproof door, packing is generally provided between the door panel and the door frame for sealing between the door panel and the door frame.

For example, in the soundproof door disclosed in Japanese Utility Model Laid-Open No. 4-73195, one of an end of a door panel and a door stop contacting the door panel is formed in multiple stages, and the other is provided with a notch that fits into the multi-stage portion. As well as being formed, at least one of the multi-step portion and the notch is provided with packing made of sponge, rubber, or the like. With such a configuration, a large contact area of the packing is ensured, and higher soundproof performance is obtained by bending the shape of the packing.

[0004] Further, a conventional soundproof door using a magnet packing as a packing is also known, and a high soundproof performance is ensured by maintaining a close contact state between a door panel and a door by the magnet packing. I have to.

[0005]

However, among the above-mentioned conventional soundproof doors, the door panel or the door stop having multiple steps requires complicated processing for forming the multiple steps and increases the cost. Further, if the construction accuracy of the door frame and the door panel is poor, it is impossible to prevent a gap from being generated between the two, and there is a problem that the soundproof performance particularly in a high-frequency range is reduced. In addition, the cost of the soundproof door provided with the magnet packing is considerably higher because the cost of the magnet packing itself is considerably higher than the cost of the sponge or rubber packing.

The present invention has been made in order to solve such a problem, and it is possible to improve the soundproofing performance particularly in a high-frequency range while compensating for variations in construction accuracy.
Moreover, it aims at providing an inexpensive soundproof door.

[0007]

In order to achieve the above object, the present invention provides a soundproof door in which a door frame having a door stop is opened and closed by a door panel in the form of an opening door, and a door is provided on a door stop surface of the door stop. A contact recess is formed and attached to the door panel, and a door face bar that engages with the door stop recess when the door panel is closed, and a door stop recess and / or a door face bar are provided along at least one of these to close the door panel. A sound absorbing member that seals between the door stop recess and the door surface bar when the door panel is closed, and a gap facing the sound absorbing member when the door panel is closed is formed in the door surface bar. .

In this case, at least one of the door frame and the door panel is provided with an elastic airtight member that seals between the door frame and the door panel and forms an air chamber between the door panel and the sound absorbing member when the door panel is closed. Is preferred.

[0009]

According to the soundproof door of the present invention, when the door panel is closed, the door face bar attached to the door panel is engaged with the door stop recess formed on the door stop surface of the door stop material, and the door stop recess is provided. A sound absorbing member provided along at least one of the door face bar and the door seals between the two. In this state, sound generated on one side inside and outside the soundproof door is absorbed by the sound absorbing member itself when passing through the sound absorbing member. Further, since the sound absorbing member is along the door stop recess and the door face bar and the sound propagation path is bent, the sound is attenuated by the diffraction effect at this time. Further, since the gap of the door face bar facing the sound absorbing member gives a large sound transmission loss to the high sound range component, the soundproof door of the present invention can obtain high soundproof performance especially for the high sound range component.

As described above, the soundproof door according to the present invention utilizes the door face bar normally provided on the door panel as an element of the soundproof member, so that it can be constructed at a low cost. Also, after installing the door panel on the door frame, according to the construction situation, if you install the door face stick, even if the construction accuracy is not good, while easily compensating for this,
High soundproofing performance can be secured.

Further, in the soundproof door according to the second aspect, the sound passing through the gap between the door frame and the door panel is further subjected to sound transmission loss by the air chamber formed between the elastic airtight member and the sound absorbing member. Since the sound is shielded by the elastic airtight member, higher soundproof performance can be obtained.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is an overall perspective view showing the appearance of a soundproof door to which the present invention is applied. This soundproof door 1 has a soundproof room I
The door frame 2 includes a door frame 2 and a door panel 3 that opens and closes the door frame 2 in the form of a hinged door.

The door frame 2 includes left and right vertical frames 4 and 5, and upper and lower horizontal frames 6 and 7. Door panel 3
Is rotatably attached to the front of the right vertical frame 4 of the door frame 2 via a hinge 8 and is opened outward to the outside O of the soundproof room. The door panel 3 incorporates a sound absorbing material, a sound insulating material, and the like (not shown), and has a high sound insulating performance itself, for example, a sound insulating characteristic of D-35.

FIG. 2 is a horizontal sectional view showing the structure of the door frame 2 near the left vertical frame 4 with the door panel 3 closed. As shown in the figure, on the inner side surface of the left vertical frame 4, a door stop 9 having a rectangular cross section made of solid wood or MDF is provided along the vertical direction. At the front end of the door stop member 9, that is, at the corner of the door stop surface opposite to the left vertical frame 4, a door stop recess 10 having a rectangular cross section is formed continuously in the vertical direction. In the door stop recess 10, along the wall surface,
A sound-absorbing packing (sound-absorbing member) 11 having an L-shaped cross section is attached with an adhesive or the like.
It slightly protrudes outside the door stop recess 10. The sound-absorbing packing 11 has required sound-absorbing characteristics, and is made of, for example, a urethane foam sponge or foam rubber having a thickness of 4 to 5 mm.

On the other hand, on the indoor surface of the door panel 3,
A door surface bar 12 is provided at a position corresponding to the sound absorbing packing 11. In the present embodiment, the door face bar 12 is provided with the original decorative function of decorating the door panel 3 and the door stop recess 10.
In addition, it also has a soundproof function of soundproofing together with the sound absorbing packing 11. The door face bar 12 is made of MDF or the like, has a gap 13, is formed in a U-shaped cross section, and after the door panel 3 is installed on the door frame 2, the opening of the gap 13 is made into the left vertical frame 4. It is arranged facing the side and is attached to the door panel 3 later by double-sided tape or the like.

Further, from the door stop surface of the door stop member 9 to the inner side surface of the left vertical frame 4, a door stop packing (elastic airtight member) 14 is attached at a distance from the sound absorbing packing 11. . The door stop packing 14 is a hollow member made of rubber or the like and having a substantially L-shaped cross section.

Next, the operation of the soundproof door 1 having the above configuration will be described. As shown in FIG. 1, when the door panel 3 is closed, the back surface and the left side surface of the door surface bar 12
1 and the gap 13 of the door face bar 12 faces the sound absorbing packing 11. In addition, the corner between the back surface of the door panel 3 and the front end of the door is in close contact with the door stop packing 14, and the back surface of the door panel 3, the door stop surface of the door stop member 9, the sound absorbing packing 11 and the door stop packing 1 are also provided.
4 forms an air chamber 15.

In this state, for example, the sound generated inside the soundproof room I undergoes a large sound transmission loss when transmitting to the outside O of the soundproof room via the sound absorbing packing 11, the air chamber 15, and the door stop packing 14. That is, when passing through the sound absorbing packing 11, the sound is absorbed by the sound absorbing action of the sound absorbing packing 11, and the L-shaped sound absorbing packing 11 is also absorbed.
It is attenuated by the diffraction effect due to the bending of the sound inside. The sound passing through the gap between the sound-absorbing packing 11 and the door surface bar 12 suffers a large sound transmission loss, particularly in a high-frequency component, due to the gap 13 of the door surface bar 12 facing the sound-absorbing packing 11.

The sound transmitted through the sound absorbing packing 11 is further
Sound transmission loss is received due to diffraction due to bending at the air chamber 15, sound transmission loss at the air chamber 15, sound absorption at the door stop packing 14, and bending at the door stop packing 14 toward the outside O of the soundproof room. Therefore, according to the soundproof door 1 of the present embodiment, it is possible to obtain excellent soundproofing performance by greatly improving the sound leakage particularly of the high-frequency range component, for example, D-3.
5 can be obtained.

In this embodiment, since the door face bar 12 normally provided on the door panel 3 is used as an element of the soundproof member, it can be constructed at a low cost. Further, after the door panel 3 is installed on the door frame 2, the door face bar 12 is attached later, so that even if the construction accuracy of the door frame 2 and the door panel 3 is not good, the sound absorbing packing 11 is slightly removed while compensating for this. In a compressed state, it can be attached without a gap, and therefore, high soundproof performance can be relatively easily secured.

FIG. 3 shows a soundproof door 21 according to a second embodiment of the present invention. In this soundproof door 21, the door stop recess 30 has a substantially quarter-circular cross-sectional shape, and a sound absorbing packing 31 having a semicircular arc cross section is attached to the door stop recess 30. The sound-absorbing packing 31 is made of a thin hollow neoprene sponge rubber or the like, and is arranged so that its opening faces the door panel 3 side.

On the other hand, the door face bar 32, which is attached later to the door panel 3, is made of molded plastic having a semicircular cross section and has a gap 33 inside. When the door panel 3 is closed, the door face bar 32 fits into the sound-absorbing packing 31, and comes into close contact with this, and the gap 33 faces the sound-absorbing packing 31. Other configurations are the same as those of the soundproof door 1 of the first embodiment.

Therefore, in the soundproof room 21, the soundproof room I
When the sound generated inside the sound-absorbing packing 31 passes through the sound-absorbing packing 31, the sound absorption by the sound-absorbing packing 31, the sound transmission loss due to the air inside the sound-absorbing packing 31, and the curved sound-absorbing packing 31
Attenuated by the bending of the sound within. The sound attenuating operation after passing through the sound absorbing packing 31 is the same as that of the first embodiment, and therefore, in this embodiment, the same effect as that of the first embodiment can be obtained.

The present invention can be implemented in various modes other than those described above. For example, in the embodiment,
Although the doorstop recesses 10 and 30 of the doorstop 9 are provided at the corners of the doorstop surface, they may be provided at the center of the doorstop surface. Further, the embodiment is an example in which the present invention is applied to the left vertical frame of the soundproof door, that is, the free end side of the door panel, but the present invention can be similarly applied to the right vertical frame and the upper and lower horizontal frames. By doing so, the soundproof performance of the soundproof door can be further improved. In addition, the configuration of the details can be appropriately changed without departing from the spirit of the present invention.

[0026]

[Effects of the Invention] As described in detail above, the soundproof door of the present invention can improve the soundproof performance especially in the high-frequency range while compensating for variations in the construction accuracy, and has the effect of being able to be constructed at low cost. Have

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing an appearance of a soundproof door according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a sectional view similar to FIG. 2 of a soundproof door according to a second embodiment of the present invention;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Soundproof door 2 Door frame 3 Door panel 9 Door stop material 10 Door stop recess 11 Sound absorbing packing 12 Door face stick 13 Air gap 14 Door touch packing 15 Air chamber 21 Soundproof door 30 Door stop recess 31 Sound absorbing packing 32 Door face stick 33 Air gap

Claims (2)

(57) [Scope of request for utility model registration] 1. A soundproof door for opening and closing a door frame having a door stop material in a door-opening manner with a door panel, wherein a door stop recess is formed in a door stop surface of the door stop material, the door stop is attached to the door panel, and the door panel is provided. A door face bar that engages with the door stop recess when the door is closed; and a door stop recess that is provided along at least one of the door stop recess and the door face bar when the door panel is closed. And a sound absorbing member for sealing between the door surface bar and the door surface bar, wherein the door surface bar has a gap facing the sound absorbing member when the door panel is closed. 2. When the door panel is closed, a seal is provided between the door frame and the door panel and an air chamber is provided between the door panel and the sound absorbing member. The soundproof door according to claim 1, further comprising an elastic airtight member to be formed.