JPH089343Y2 - Soundproof structure of soundproof door - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a sound insulation structure for a soundproof door used for sealing an opening.

[Conventional technology]

Conventionally, there is a structure shown in FIGS. 4 and 5 as a structure in which an airtight packing is provided on a door stop on the inner periphery of an opening frame and the airtightness is maintained by pressing the airtight packing with a soundproof door. In this structure, a hollow portion 22a is formed on the front surface side of an airtight packing 22 which is in contact with the door contact surface of the door stopper 21 and whose rear surface side is fixed. The hollow portion 22a is formed in a hermetically sealed state, and when the door body 23 is closed, the peripheral portion of the door body 23 presses the hollow portion 22a, so that the space between the door body 23 and the opening frame 24 is reduced. Is designed to be sealed.

[Problems to be solved by the device]

However, in this structure, since the member forming the hollow portion 22a is continuously formed, there is no escape area for air in the hollow portion 22a, and the hollow portion 22a compressed when the door body 23 presses the hollow portion 22a. The door body 23 was pushed back by the internal repulsive force. Therefore, a large force is required to close the door body 23, which makes it difficult to close it.

Therefore, the purpose of this invention is to maintain airtightness,
Another object of the present invention is to provide a soundproof structure for a soundproof door that can easily close the door body.

[Means for solving the problem]

In the sound insulation structure of the soundproof door of the present invention, in the sound insulation structure of the sound insulation door in which the peripheral edge of the door body presses the airtight packing provided at the door stop of the opening frame in the closed state, the airtight packing faces the opening frame. The one piece and the other piece facing the door stop form a substantially right angle, and the contact member is inclined from the side edge of the one piece to the vicinity of the side edge of the other piece to form a hollow portion having a substantially triangular cross section, and A slit is formed between the abutting member and the other piece, and a light leakage prevention portion bent from the side edge of the other piece is formed so as to surround the slit, and a side end surface and a surface of the door body are formed. The corner portion of the contact member is pressed against the substantially center of the contact member, and the one-sided portion of the contact member elastically deformed is brought into close contact with the side end surface of the door body.
Moreover, the light leakage prevention portion is in contact with the surface of the door body.

[Action]

According to the structure of the present invention, the slit is provided at one side edge of the hollow portion of the airtight packing with which the door body abuts. Therefore, when the airtight packing is pressed against the door body, the air inside the hollow portion is discharged from the slit to the outside. It is possible to prevent the pull-out and the repulsive force from being generated on the door body. Therefore, the door body can be closed with a light force, and the closing operation can be easily performed. In addition, since the corner portion composed of the side end surface and the surface of the door body presses the approximate center of the contact member and elastically deforms one side portion of the contact member, the side end surface of the door body is closely contacted. It is possible to reduce the impact by receiving the force in the moving direction, hold the side end surface of the door body, and improve the airtightness. Further, since the light leakage prevention portion is in contact with the surface of the door body, it is possible to prevent light leakage. In addition, the airtight packing forms a substantially right angle between one piece facing the opening frame and the other piece facing the door stop, and the contact member is inclined from the side edge of one piece to the side edge of the other piece to form a hollow of triangular cross section. In addition to forming a part, a slit is formed between the abutting member and the other piece, and a light leakage prevention portion bent from the side edge of the other piece is formed so as to surround the slit, so that the shape is simple and inexpensive. Can be manufactured.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS.

A latch 6 is provided on the end surface of the door body 1 so as to be capable of projecting and retracting, and engages with a latch receiver 7 provided in the opening frame 3.

The airtight packing 2 is made of hard rubber or the like, and is fixed to the end surface of the door stop 4 along the inner circumference of the opening frame 3 as shown in FIG. A double-sided adhesive tape 5 is provided on the back side of the airtight packing 2 and can be fixed only by pressing. The airtight packing 2 is a piece 2e facing the opening frame 3.
And another piece 2d facing the door stop 4 form a substantially right angle, and one piece 2e
The contact member 2c is inclined from the side edge of the other piece 2d to the vicinity of the side edge of the other piece 2d to form a hollow portion 2a having a substantially triangular cross section. A slit 2b is formed at the intersection of the contact member 2c and the other piece 2d on the side of the door stop 4 over the entire length in the member longitudinal direction. When the contact member 2c is pressed, the hollow portion is formed. The air inside 2a is discharged to the outside from this slit 2b. In addition, a light leakage prevention portion 2f that is bent from the side edge of the other piece 2d is formed so as to surround the slit 2b. The light leakage prevention portion 2f contacts the surface of the door body 1 in a closed state with the door body 1, Light is prevented from leaking from between the door bodies 1.

The closing operation of the door body 1 according to this embodiment will be described.
When the door body 1 is closed, the corner portion formed by the side end surface and the surface of the door body 1 presses the substantial center of the contact member 2c and is elastically deformed. At this time, the air inside the hollow portion 2a escapes from the slit 2b provided between the contact member 2c and the other piece 2d on the door stop 4 side.
In this state, the portion of the contact member 2c on the side of the piece 2e is the door body 1
, The latch 6 of the door body 1 is engaged with the latch receiver 7, and the door body 1 is closed.

According to the configuration of this embodiment, since the slit 2b is provided at one side edge of the hollow portion 2a of the airtight packing 2 with which the door body 1 abuts, the hollow portion 2a is pressed when the airtight packing 2 is pressed by the door body 1. It is possible to prevent the air inside from escaping from the slit 2b to the outside and causing a repulsive force to the door body 1. Therefore, even if the opening frame 3 is distorted due to construction or the airtight packing 2 is hardened in winter, the repulsive force from the hollow portion 2a does not occur and the door body 1 can be closed with a light force. Therefore, the closing operation can be easily performed. Further, since the corner portion formed by the side end surface and the surface of the door body 1 presses the approximate center of the contact member 2c and elastically deforms, the portion on the side of the piece 2e of the contact member 2c closely contacts the side end surface of the door body 1. It is possible to reduce the impact by receiving the force in the rotation direction of the door body 1 and to hold the side end surface of the door body 1 to improve the airtightness. In addition, the light leakage prevention unit 2f
Since the abutment is brought into contact with the surface of the door body 1, it is possible to prevent leakage of light. Further, the airtight packing 2 forms a substantially right angle between the one piece 2e facing the opening frame 3 and the other piece 2d facing the door stop 4, and the abutting member 2c from the side edge of the one piece 2e to the vicinity of the side edge of the other piece 2d. While forming a hollow portion 2a having a triangular cross section by inclining, a slit 2b is formed between the contact member 2c and the other piece 2d, and is bent from the side edge of the other piece 2d so as to surround this slit 2b. Since the light leakage prevention portion 2f is formed in a simple shape, it can be manufactured at low cost.

Although the slit 2b is formed over the entire length in the longitudinal direction of the airtight packing 2 in the above embodiment, it may be partially provided at intervals.

[Effect of device]

According to the sound insulation structure of the soundproof door of the present invention, since the slit is provided at one side edge of the airtight packing with which the door body abuts, air inside the hollow part is prevented when the airtight packing is pressed against the door body. It is possible to prevent the repulsive force from being generated on the door body by coming out from the slit.
Therefore, the door body can be closed with a light force, and the closing operation can be easily performed. In addition, since the corner portion formed by the side end surface and the surface of the door body presses the approximate center of the contact member and elastically deforms one side of the contact member, the part of the contact member is brought into close contact with the side end surface of the door body. It is possible to reduce the impact by receiving a directional force and to hold the side end surface of the door body, thereby improving airtightness. Further, since the light leakage prevention portion is in contact with the surface of the door body, it is possible to prevent light leakage. In addition, the airtight packing forms a substantially right angle between one piece facing the opening frame and the other piece facing the door stop, and the contact member is inclined from the side edge of one piece to the side edge of the other piece to form a hollow of triangular cross section. In addition to forming a part, a slit is formed between the abutting member and the other piece, and a light leakage prevention portion bent from the side edge of the other piece is formed so as to surround the slit, so that the shape is simple and inexpensive. Can be manufactured.

[Brief description of drawings]

1 is a partial sectional view of an embodiment of the present invention, FIG. 2 is a partial perspective view of the hermetic packing, FIG. 3 is a front view of an opening frame to which the hermetic packing is fixed, and FIG. 4 is a conventional partial cross section. 5 and 5 are partial perspective views of the airtight packing. 1 ... Door body, 2 ... Airtight packing, 2a ... Hollow part, 2b ... Slit, 3 ... Opening frame, 4 ... Door stop

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliographic references Sho 51-155726 (JP, U) Actual public Sho 45-8604 (JP, Y1) Actual public Sho 50-29879 (JP, Y2) Actual public Sho 57- 60471 (JP, Y2)

Claims (1)

[Scope of utility model registration request] 1. A soundproof structure for a soundproof door in which a peripheral portion of a door body presses an airtight packing provided in a door stop of an opening frame in a closed state, wherein the airtight packing is a piece facing the opening frame and the door stop. Forming a substantially right angle with the other piece facing each other, and inclining the contact member from the side edge of the one piece to the vicinity of the side edge of the other piece to form a hollow portion having a substantially triangular cross section, and the contact member and the A slit is formed between the other piece, and a light leakage preventing portion bent from the side edge of the other piece is formed so as to surround the slit, and a corner portion formed by the side end surface and the surface of the door body is formed. The one-sided portion of the contact member elastically deformed by pressing the substantial center of the contact member is in close contact with the side end surface of the door body, and the light leakage prevention portion is in contact with the surface of the door body. Sound insulation structure for soundproof doors