JP4467414B2 - Soundproof door - Google Patents

Description

  The present invention relates to a soundproof door having a soundproofing function.

  As a soundproof door, the thing of patent documents 1, 2 is known, for example. In these soundproof doors, a soundproof material such as glass wool is filled in a space composed of a scissors, a crosspiece joined to the scissors, and a face plate fixed to both the inside and outside of the scissors. In Patent Document 2, a 2 to 5 mm thick damping sheet formed by adding and blending metal powder such as lead powder and iron powder into rubber and soft plastic is attached to the back surface of the face plate located on the sound source side. It is described that the soundproofing performance is improved.

  Moreover, in order to ensure the required soundproof performance, the conventional soundproof door is attached with a gremon lock that seals between the door body and the door frame when the door is closed. Gremon locks move the pair of upper and lower rods in the axial direction by swinging the handle lever, and the tapered portion provided at the tip of each rod is a roller in the rod holder attached to the upper and lower frames of the door frame. The door main body is moved to the door stop frame side provided on the inner periphery of the door frame by the cam action to contact, and the door is pressed against the seal member provided on the surface of the door stop frame (see Patent Document 3). ).

JP 10-61342 A Japanese Utility Model Publication No.59-192595 JP 9-41763 A

  Gremon tablets have a large number of parts and a complicated structure, which increases the weight of the soundproof door and increases the manufacturing cost. In addition, since the door is brought into pressure contact with the seal member provided on the surface of the door stop frame, if the seal member deteriorates due to long-term use, the predetermined soundproof performance cannot be exhibited. Further, since the door is pressed against the seal member by swinging the handle lever, there is a problem that the operation of the handle lever is heavy.

  Therefore, in the present invention, an object of the present invention is to provide a soundproof door that can satisfy the required soundproof performance without using a gremon lock by improving the soundproof performance of the conventional soundproof door. And

  The soundproof door of the present invention is a soundproof door in which a soundproof material is filled in a space composed of a coffin, a crosspiece joined to the coffin, and a face plate that sandwiches the coffin and the crosspiece from both front and back surfaces. A comb-like member is fixed, and a tooth portion of the comb-like member is brought into contact with a soundproofing material. In the soundproof door of the present invention, the sound (vibration) received by the face plate on the sound source side is mainly absorbed by the internal soundproof material. Part of the sound received by the face plate on the sound source side is transmitted to the soundproof material from each tooth of the comb-like member fixed to the crosspiece and absorbed by the soundproof material.

  Here, it is desirable that the teeth of the comb-like member be arranged so as to face a direction perpendicular to the crossing direction. As a result, the tooth tip of the comb-shaped member is arranged farthest from the crosspiece and is likely to vibrate, so that the sound transmitted through the crosspiece can be more efficiently transmitted to the soundproofing material and absorbed. Become.

  Moreover, it is desirable that the soundproof door of the present invention has a belt-shaped soundproof sheet interposed between the crosspiece and the face plate. As a result, the sound transmitted from the face plate to the crosspiece is partially absorbed by the band-like soundproof sheet interposed between them, and then passes through the crosspiece to each tooth of the comb-like member fixed to the crosspiece. Is transmitted to the soundproofing material and absorbed by the soundproofing material. Further, since a part of the sound transmitted from the face plate to the crosspiece is partially absorbed by the band plate-like soundproof sheet, the sound transmitted to the other faceplate via the crosspiece can be reduced.

  Here, it is desirable that a plurality of bars are provided, and the strip-like soundproof sheets are alternately provided on the front side and the back side of the plurality of bars. As a result, the sound transmitted from the face plate to the crosspiece is partially absorbed by the band plate-like soundproof sheet on either the front side or the back side, so that the sound transmitted to the other faceplate via the crosspiece is reduced. be able to. Moreover, since the crosspiece and the faceplate are more closely approached and firmly fixed on the surface on which the band plate-like soundproof sheet is not disposed, the crosspiece serves as a reinforcement of the faceplate and suppresses vibration of the faceplate itself that receives sound. it can.

  Moreover, it is desirable that the soundproof door of the present invention has a soundproof sheet attached to the entire inner surface of the face plate. As a result, the sound received by the face plate is partially absorbed by the sound-proof sheet affixed to the entire inner surface of the face plate, and then passes through the crosspieces to the soundproof material from the teeth of the comb-like member fixed to the crosspieces. Transmitted and absorbed by soundproofing material.

(1) A soundproof door in which a soundproof material is filled in a space composed of a fence, a crosspiece joined to the coffin, and a face plate sandwiching the crosspiece and the crosspiece from both sides, and the comb has a comb-like member The sound received by the face plate on the sound source side is absorbed mainly by the internal soundproof material and the sound received by the face plate on the sound source side as a result of contacting the teeth of the comb-like member with the soundproof material. A part of this is transmitted to the soundproof material from each tooth of the comb-like member fixed to the crosspiece, and is absorbed by the soundproof material, so that the soundproof performance is dramatically improved as compared with the conventional soundproof door. This makes it possible to satisfy the required soundproofing performance without using a gremon tablet.

(2) By arranging the teeth of the comb-shaped member so as to face the direction perpendicular to the direction of the crosspiece, it is possible to transmit the sound transmitted through the crosspiece to the soundproofing material more efficiently and absorb it. Thus, the soundproofing performance can be further improved.

(3) The band plate-shaped soundproof sheet is interposed between the crosspiece and the face plate, so that the sound transmitted from the faceplate to the crosspiece is partially absorbed by the band plate-like soundproof sheet interposed therebetween. Then, the sound is transmitted from the teeth of the comb-like member fixed to the crosspiece to the soundproofing material and absorbed by the soundproofing material, so that the soundproofing performance can be further improved. In addition, since a part of the sound transmitted from the face plate to the crosspiece is partially absorbed by the band plate-like soundproof sheet, the sound transmitted to the other faceplate via the crosspiece can be reduced, and the soundproofing performance is further improved. improves.

(4) The sound transmitted from the face plate to the crosspieces is provided by a plurality of crosspieces and the strip-shaped soundproof sheets arranged alternately on the front side and the back side of the plurality of crosspieces. It is partially absorbed by the band plate-like soundproof sheet on either the front side or the back side. Thereby, since the sound transmitted to the other face plate through the crosspiece can be reduced, the soundproof performance can be further improved. Moreover, since the crosspiece and the faceplate are more closely approached and firmly fixed on the surface on which the band plate-like soundproof sheet is not disposed, the crosspiece serves as a reinforcement of the faceplate and suppresses vibration of the faceplate itself that receives sound. And the soundproofing performance is further improved.

(5) By attaching the soundproof sheet to the entire inner surface of the face plate, the sound received by the face plate is partially absorbed by the soundproof sheet attached to the entire inner surface of the face plate, and then passes through the crosspiece. The sound is transmitted from the teeth of the comb-shaped member fixed to the soundproofing material and absorbed by the soundproofing material, so that the soundproofing performance can be further improved.

  1 is a front view of a soundproof door according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line AA ′ of FIG. 1, and FIG. 3 is a diagram showing details of the sound absorbing member of FIG. Is a front view, and (b) is a plan view.

  As shown in FIGS. 1 and 2, the soundproof door 1 according to the embodiment of the present invention is formed by welding a square frame-shaped ridge 2 formed by welding lightweight grooved steel and upper and lower ridges 2. It is filled in a space constituted by the joined vertical beam 3 made of lightweight channel steel, face plates 4a and 4b sandwiching the eaves 2 and the vertical beam 3 from both front and back surfaces, and the eaves 2, the vertical beam 3 and the face plates 4a and 4b. And glass wool board 5 as a soundproofing material.

  A plurality of vertical bars 3 are mounted on the upper and lower ridges 2. Further, a comb-like sound absorbing member 6 shown in FIG. 3 is fixed to each vertical rail 3 by welding. The sound absorbing member 6 is formed on the back (ridge) 6b so that the teeth 6a are oriented in a direction perpendicular to the direction of the vertical beam 3 (in this embodiment, the horizontal direction with respect to the vertical beam 3 in the vertical direction). The portion is fixed to the approximate center of the vertical beam 3. The sound absorbing member 6 is formed of a 1.6 mm thick hot-dip galvanized steel sheet, the length of the teeth 6a is about 135 mm, the ridge width (the portion from the hair drawing to the ridge) is about 20 mm, and the interval between the teeth 6a is about 20 mm. On the other hand, the interval between the adjacent vertical bars 3 is about 185 mm, and the tips of the teeth 6a of the sound absorbing member 6 are arranged near the adjacent vertical bars 3 with an interval of about 30 mm.

The sound absorbing member 6 is in a state in which the front and back surfaces of each tooth 6a are in close contact with the glass wool board 5 filled in the space formed by the rod 2, the vertical rail 3, and the face plates 4a and 4b. The density of the glass wool board 5 to be filled is about 40 kg / mm ³ .

  A soundproof sheet 7 is attached to the entire inner surface of the face plate 4a on the sound source side. Further, a belt-like soundproof sheet 8 is provided between the vertical beam 3 and the face plates 4a and 4b. The belt-like soundproof sheet 8 is alternately provided on the front surface side and the back surface side of the adjacent vertical beam 3. It has been. The soundproof sheets 7 and 8 are sheets formed by adding metal powder such as lead powder and iron powder to rubber and soft plus chips. Note that the surface between the vertical rail 3 and the face plates 4 a and 4 b, which is not provided with the band-shaped soundproof sheet 8, is bonded by a double-sided adhesive tape 9.

  In the soundproof door 1 having this configuration, the sound (vibration) received by the sound source side face plate 4a is mainly absorbed by the internal glass wool board 5, and part of the sound received by the sound source side face plate 4a is the vertical rail 3. Then, each tooth 6a of the comb-like sound absorbing member 6 fixed to the vertical beam 3 is transmitted to the glass wool board 5 and absorbed by the glass wool board 5. Therefore, the soundproof door 1 has dramatically improved soundproof performance as compared with the conventional soundproof door. Therefore, the soundproof door 1 can satisfy the required soundproofing performance without using a gremon lock.

  Further, in the soundproof door 1 according to the present embodiment, the teeth 6 a of the comb-like sound absorbing member 6 are arranged so as to face the direction perpendicular to the direction of the vertical beam 3, so that the sound is transmitted through the vertical beam 3. Sound can be transmitted to the glass wool board 5 and absorbed more efficiently, which is one of the factors for improving the soundproofing performance.

  Moreover, in the soundproof door 1 in this embodiment, since the strip-shaped soundproof sheet 8 is interposed between the vertical beam 3 and the face plate 4a, the sound transmitted from the face plate 4a to the vertical beam 3 is this soundproofing. After being partially absorbed by the sheet 8, it is transmitted to the glass wool board 5 from each tooth 6 a of the comb-like sound absorbing member 6 fixed to the vertical rail 3 through the vertical rail 3 and absorbed by the glass wool board 5. Further, a part of the sound transmitted from the face plate 4a to the vertical beam 3 is partially absorbed by the strip-shaped soundproof sheet 8, so that the sound transmitted to the sound receiving side surface plate 4b through the vertical beam 3 is reduced. can do.

  Further, in the soundproof door 1 according to the present embodiment, a plurality of vertical bars 3 are disposed, and the strip-shaped soundproof sheets 8 are alternately disposed on the front side and the back side of the plurality of vertical bars 3. The sound transmitted from the face plate 4a to the vertical rail 3 is partially absorbed by the band plate-like soundproof sheet 8 on either the front side or the back side. Thereby, the sound transmitted to the sound receiving side face plate 4b through the vertical rail 3 is reduced, and the soundproofing performance is further improved. Moreover, since the vertical beam 3 and the surface plates 4a and 4b come closer to each other on the surface on which the strip-like soundproof sheet 8 is not disposed, the vertical beam 3 is fixed to the surface plate 4a, The reinforcement of 4b can suppress the vibration of the face plate itself that receives sound, and the soundproofing performance is further improved.

  In the soundproof door 1 according to the present embodiment, since the soundproof sheet 7 is attached to the entire inner surface of the face plate 4a, the sound received by the face plate 4a is soundproofed sheet 7 attached to the entire inner surface of the face plate 4a. Is absorbed by the glass wool board 5 through the vertical rail 3, transmitted from the teeth 6 a of the comb-like sound absorbing member 6 fixed to the vertical rail 3 to the glass wool board 5, and absorbed by the glass wool board 5.

  In the above embodiment, the soundproof door 1 using the vertical beam 3 is shown, but the present invention is not limited to this, and a horizontal beam may be used. Further, as the crosspiece, H-shaped steel and L-shaped steel can be used in the same manner in addition to the grooved steel. Also, the material is not limited to steel, but may be aluminum alloy or wood. Furthermore, it is good not only as a hinged door but as a sliding door.

  About the soundproof door of this invention, the sound-insulation performance test prescribed | regulated to Japanese Industrial Standard (JISA4702) was done. The test was performed using a test body that includes only the sound absorbing member 6 and does not include the soundproof sheets 7 and 8. In addition, this test body is not equipped with a gremon tablet. FIG. 4 is a diagram showing a test result using a test specimen.

  As shown in FIG. 4, in this test body, the sound transmission loss at the center frequency of 100 to 2500 Hz was 31 dB on average, and T-1 was obtained as the sound insulation grade (joint). That is, this test body was provided with only the sound absorbing member 6 without the soundproof sheets 7 and 8, but the sound insulation grade T-1 was obtained without using Gremon tablets.

  The soundproof door of the present invention is useful as a door for opening and closing an opening portion that needs soundproofing such as an audiovisual room and a conference room. In particular, since it is possible to satisfy the required soundproofing performance without using a gremon tablet, it is suitable in that it is a lightweight and inexpensive soundproofing door.

It is a front view of the soundproof door in the embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line A-A ′ of FIG. 1. It is a figure which shows the detail of the sound absorption member of FIG. 1, Comprising: (a) is a front view, (b) is a top view. It is a figure which shows the test result by a test body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Soundproof door 2 ３ 3 Vertical rail 4a, 4b Face plate 5 Glass wool board 6 Sound absorbing member 6a Teeth 6b Back 7,8 Soundproof sheet 9 Double-sided adhesive tape

Claims (5)

  A soundproof door filled with a soundproofing material in a space composed of a coffin, a crosspiece joined to the coffin, and a face plate sandwiching the coffin and the crosspiece from both sides, and a comb-like member is fixed to the crosspiece A soundproof door in which the teeth of the comb-shaped member are brought into contact with the soundproofing material.   The soundproof door according to claim 1, wherein the teeth of the comb-like member are arranged so as to face a direction perpendicular to the direction of the crosspiece.   The soundproof door according to claim 1 or 2, wherein a band plate-shaped soundproof sheet is interposed between the crosspiece and the face plate. A plurality of the bars are arranged,
The soundproof door according to claim 3, wherein the strip-shaped soundproof sheets are alternately disposed on a front surface side and a back surface side of the plurality of crosspieces.   The soundproof door according to any one of claims 1 to 4, wherein a soundproof sheet is attached to the entire inner surface of the face plate.

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