JPS6149089A - Sound blocking structure of door - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is applicable to doors installed in rooms where sound insulation is required, such as music classrooms, music lesson rooms, acoustic testing rooms, experimental rooms, and sound measurement booths. It concerns a sound insulation structure.

(Prior art) Conventionally, in this type of sound insulation structure, the door stop surface of the door frame was provided on the rise, and the inner periphery of the door was provided on the rise, so that the inner periphery of the door was in close contact with the door stop surface. As shown in Fig. 4, an iron plate is attached to the inner periphery of the door a, and a cushioning material e made of magnetic rubber is attached to the door stop surface d of the door frame C.
There is one that seals the gap between the door a and the door frame C by adsorbing it to the door frame C, and insulates the sound with the cushioning material e.

(Problems to be Solved by the Invention) However, in the case where the door stop surface of the door frame is made into a rise as described above, and the inner periphery of the door is made into a rise,
Inevitably, the door becomes thicker and heavier, making it difficult to open and close smoothly.Also, in the case of a door with a cushioning material made of magnetic rubber on the door stop surface of the door frame, the door becomes heavier. Installing a steel plate on the inner edge of the door increases the INN cost of the door, and
This had the disadvantage that it spoiled the appearance of the inside surface of the door.

(Means for Solving the Problems) The present invention has been made in consideration of the above-mentioned conventional drawbacks, and the present invention has been made in consideration of the above-mentioned conventional drawbacks. A sealing material abutting the periphery is provided, and a sealing material abutting the inner periphery of the door is provided over the inner periphery of the door frame corresponding to the inner periphery of the door, and corners of the inner periphery of the door are chamfered. A chamfered portion is formed, and when the door is opened, both of the sealing materials slide into contact with the chamfered portion, so that an air layer is formed surrounding the two sealing materials, the inner peripheral edge of the door, and the door stop surface, This eliminates the above-mentioned conventional drawbacks.

(Function) In the present invention, when the door is closed, an air layer is formed between the inner peripheral edge of the door and the door stop surface without the sealing material turning over, and this air layer creates a gap between the door and the door frame. It is designed to provide sound insulation.

(Example) Next, the present invention will be described in detail based on an example shown in FIGS. 1 to 3.

In the figure, 1 is a door frame, and a door 2 is attached to the door frame 1 via a hinge 3 so as to be openable and closable. A doorstop material 4 is attached to the inner peripheral surface 10 of the door frame 1 with a buffer tape 5 in correspondence with the inner peripheral side edge 20 of the door 2. , an elastic lip 60 with a J-shaped cross section
The sealing material 6 having the following properties is provided. As shown in FIG. 1, the sealing material 6 is made by inserting a cushioning material 42 (for example, sponge) into a groove 41 provided in the doorstop surface 40 of the doorstop material 4, and bonding it to the cushioning material 42. base 61
is provided so as to be flush with the door stop surface 40. On the other hand, on the inner circumferential surface 10 of the door frame 1 corresponding to the inner circumferential edge 20 of the door 2, a sealing material 7 having an elastic lip 70 having a J-shaped cross section is attached close to the door stop surface 40. There is. The elastic lip 60 of the sealing material 6 protrudes in the thickness direction of the door 2, and the sealing material 7
The elastic lip 70 protrudes in the width direction of the door 2.

The inner peripheral edge 20 of the door 2 has a chamfered portion 21 formed by chamfering the corner, and when the door is closed, the elastic lip 70 of the sealing material 7 abuts against the chamfered portion 21 in a pressed state. The elastic lip 60 of the sealing material 6 abuts against the flat surface portion of the inner peripheral edge 20 in a suppressed state, and the inner peripheral edge 20 and the door stop surface 40 are held together by the elastic lips 60° 70, the inner peripheral edge 20, and the door stop surface 40. In between, an air layer 8 is formed surrounding the entire circumference of the inner periphery 20, and the air layer 8 provides sound insulation between the inner periphery 20 and the doorstop surface 40, that is, the gap between the door 2 and the door frame 1. (See Figure 3).

When the door 2 is closed, the elasticity of the sealing material 6 is applied to the inner periphery 20 of the door 2 as it rotates toward the door frame 1, as shown in FIGS. 2 and 3. lip 6
0 makes contact, the elastic lip 60 is bent, pushed into the groove 41, and comes into sliding contact with the upper surface of the inner peripheral edge 20.

On the other hand, the elastic lip 70 of the sealing material 7
When it comes into contact with it, it is folded into the door frame 1 side while slidingly contacting the chamfered portion 21. Furthermore, the elastic lips that contact the upper and lower edges of the door 2 and the inner periphery of the lock side are the same as those on the hanging base side, and the elastic lips of the sealing material located on the door stop surface are bent, and the groove side In addition, the elastic lip of the sealing material located on the inner circumferential surface of the door frame also slides into contact with the chamfered portion that abuts from the side and is folded into the door frame.

In addition, although the drawing shows the hanging base side of the door, the structure is the same over the entire inner periphery of the door and the entire inner periphery of the door frame.

(Effects of the Invention) Therefore, according to the present invention, when the door is closed, the sealing material slides into contact with the chamfered portion and abuts against the inner periphery without shifting, thereby creating an air layer between the inner periphery, the doorstop surface, and the sealing material. By forming an enclosure, effective sound insulation is achieved with a simple structure, and the sealing material does not get caught on the inner periphery, reducing friction, allowing smooth door opening and closing operations, and preventing damage to the sealing material and damage to the material. It has excellent practical effects, such as being able to reduce the deterioration of.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the sound insulation structure for a door according to the present invention at the hanging base side of the door, FIG. 2 is an explanatory diagram showing the same embodiment immediately before closing the door, and FIG. FIG. 4 is an explanatory diagram showing the door closed state according to one embodiment, and FIG. 4 is an explanatory diagram showing a conventional structure. 1...door frame, 2...door, 20...
Inner peripheral edge, 21... Chamfered portion, 4... Door stop material, 40... Door stop surface, 6.7... Sealing material.

Claims (1)

[Claims] Across the doorstop surface of the doorstop material located on the inner periphery of the door frame,
A sealing material that abuts the inner periphery of the door is provided, and a sealing material that abuts the inner periphery of the door is provided over the inner periphery of the door frame corresponding to the inner periphery of the door, and a corner of the inner periphery of the door is A chamfered portion is formed by chamfering, and when the door is closed, both of the sealing materials slide into contact with the chamfered portion, so that an air layer is formed surrounding the two sealing materials, the inner periphery of the door, and the doorstop surface. The sound insulation structure of the door is characterized by: