JPH0725427Y2 - Door - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a door having excellent soundproofing performance and strength.

[Prior Art and its Problems] Conventionally, as a soundproof door having a switching portion such as a mirror plate, for example, a frame portion and a mirror plate portion which are outer frames have an internal hollow flash structure, and the frame portion and the mirror plate portion are entirely formed. A method of improving the soundproofing performance is known in which the soundproofing layer is made by arranging plates such as plywood on both sides of the soundproofing material at approximately the center in the thickness direction of the door, and the structure in which the inner spaces are left on both sides of the soundproofing layer. ing. (Refer to Japanese Utility Model Publication No. 61-9998) However, in this known method, since the frames on both sides of the central soundproof layer are independent from each other, there is a problem in strength of the door as a whole. However, when one side of the door is in a high-humidity state, the frame on that side expands, which causes the door to warp.

[Means for Solving Problems and Actions Thereof] The following structure is adopted in view of the problems of the conventional door of this type.

A sound insulation sheet 8b having a surface material 9b laminated on the front and back surfaces of the frame is attached to form the outer frame 1, while the sound absorbing material 5 is arranged in the frame.
A sound insulation sheet 8a having a surface material 9a laminated on the front and back surfaces thereof is attached to form an inner panel 2 having a smaller thickness than the outer frame 1, and the outer frame 1
The inner panel 2 is inserted into the inside, and at that time, a restraint member 6 is fitted in a gap between the inner panel 2 and the outer frame 1, and further, the outer frame 1,
The space between the inner panel 2 and the restraint member 6 is filled with the caulking material 7, and the frame 3 extends over the caulking material 7 and extends over the outer frame 1 and the inner panel 2. The door to do.

The present invention adopts the above-mentioned configuration to improve the soundproofing performance, and in particular, due to the presence of the internal panel 2 which becomes the recessed portion,
It is designed to prevent leakage of low-frequency sound that is difficult to soundproof.

[Description of Embodiments] Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a front view of the door of the present invention.
An inner panel 2 thinner than the outer frame member 1 is fixed by a frame 3.

FIG. 2 shows a state in which the inner panel 2 is being assembled. The sound absorbing material 5 is made of an inorganic material such as glass wool or rock wool in a strong frame composed of three vertical frames 4a and two horizontal frames 4b. It is provided with a synthetic resin foam such as fiber board, urethane foam, and styrene foam.

The sound insulation sheet 8a covered with the surface material 9a is laminated and adhered to the front and back surfaces of the frame body of the internal panel 2 as described above.

As the sound insulating sheet 8a, metals such as lead and steel plate, a mixture of polyvinyl chloride resin mixed with metal powder, metal oxide, and inorganic powder, and other generally known sound insulating materials are used.

Further, as the surface material 9a, the surface of the plywood, fiberboard and particle board, after subjecting to an optional undercoating, if desired, colored paint or an optional decorative pattern is printed, or an optional pattern is printed. The formed paper, cloth, or synthetic resin sheet is used.

With such a configuration, the inner panel alone has a function as a soundproof panel having sufficient soundproofing and strength.

Fig. 3 shows a vertical frame 1a and a horizontal frame 1b made of laminated veneer lumber (LVL) laminated and bonded with the fiber directions of the veneers substantially parallel to each other, and as shown in Fig. 4, sound insulation on the front and back sides. The sheet 8b and a state in which the inner panel 2 is arranged in a hollow portion in the frame of the outer frame 1 formed by further adhering a surface material 9b to the upper surface of the sheet 8b are shown. The sound insulating sheet 8b and the surface material 9b used here may be the same as those used for the front and back surfaces of the inner panel 2. Further, the single plate laminated material used for the frame of the outer frame 1 is used so that the surfaces of the laminated single plates are perpendicular to the front and back surfaces of the outer frame 1. By using in this way, it is possible to obtain a door body with high dimensional accuracy even when using a single plate laminated material whose thickness accuracy is not good,
The strength in the opening / closing direction of the door is also improved.

FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 3, in which the inner panel 2 is temporarily fixed by the frame 3 fixed to the back surface of the outer frame 1 during the manufacturing process. The dimensions are set so that a gap is created between the inner wall surface and the inner wall surface.

FIG. 5 is an enlarged view of a gap portion between the inner panel 2 and the outer frame 1 temporarily fixed in FIG. By filling the caulking material 7 on the back side of the door and fitting the constraining material 6 having a thickness equal to or larger than the gap width on the interior panel 2
To be integrated with the outer frame 1. Further, by filling the caulking material 7 on it, the sealing degree of the door is improved. The caulking material used at this time has viscoelasticity and is, for example, butyl rubber, MBR, NBR, SDR.
Synthetic rubber such as, and synthetic resin such as acrylic resin and urethane resin can be used. Further, in order to improve the sound insulation property, a material having a large specific gravity, for example, a material mixed with metal powder, metal oxide, inorganic powder or the like can be used. Also,
As the restraint member 6, a single plate, a fibrous plate, a wood plate such as synthetic material, and a rod-shaped material such as hard synthetic resin can be used, and the thickness thereof is the same as or slightly thicker than the width of the space, and the width thereof is the inside. Use one that is narrower than the panel thickness.

Generally, the soundproofing function of doors that have switching parts such as drop-in parts causes the drop-in part to resonate independently of the outer frame part in the low-frequency sound of 500 HZ or less, and the soundproofing function in the low-frequency range falls. It had a drawback. However, in this way, the inner panel 2 is configured to have a sufficient function by itself as a soundproof panel by the strong frame, and the inner panel and the outer frame 1 are constrained and integrated by the constraining member 6, so that the inner panel is Only 2 does not resonate independently, and the entire door exhibits the soundproof function, and the drop of the soundproof function in the low frequency range is also eliminated.

An example of the manufacturing sequence of the door of the present invention is as follows.

As an internal panel, 2 horizontal frames 4b and 3 vertical frames 4a
The sound insulation sheet 8a and the surface material 9a are provided on one surface of the frame body
The sheet-like material obtained by laminating and adhering is laminated with an adhesive or a stapler.

Then, the sound absorbing material 5 is inserted into the inner space of the frame body, and the thickness thereof is made substantially the same as the thickness of the frame body. Next, the inner panel 2 is formed by laminating a sheet-like material in which the sound insulating sheet 8a and the surface material 9a are laminated and adhered to the other surface with an adhesive or a stapler. In parallel with this work, a sheet-like object made by laminating and adhering a sound insulating sheet 8b and a surface material 9b on the front and back surfaces of an outer frame 1 which is a framework of a vertical frame 1a and a horizontal frame 1b made of a single plate laminated material. A sheet-like material having an opening having the same size as the inner space of the frame is attached by an adhesive or a stapler to form the outer frame 1. After fixing the frame 3 to the periphery of the opening on the rear surface of the outer frame 1 with an adhesive and a stapler,
Insert the inner panel 2 into the opening. Caulking material 7 is placed in the gap between the upper, lower, left and right side surfaces of the inner panel 2 and the inner wall surface of the outer frame 1.
First, the lower surface is filled with the restraining material 6, and the caulking material 7 is further filled on the front surface side.

Finally, the frame 3 on the front surface side of the framework is fixed across the caulking material 7 across the outer frame 1 and the inner panel 2.

Thus, the outer frame 1 and the inner panel 2 are integrated.

If necessary, wood veneer will be attached to the side of the door.

[Effect] In the present invention, the restraint material 6 is fitted between the outer frame 1 and the inner panel 2 having soundproofing property, and the caulking material 7 is filled in the space between the outer frame 1, the inner panel 2 and the restraint material 6. Moreover, the frame 3 has a structure in which it extends over the caulking material 7.

With this configuration, the gap between the outer frame 1 and the inner panel 2 is sealed with the caulking material 7, and the binding material 6 is bound and integrated, and the frame 3 is arranged on the binding material 6. Sound does not leak from the gap, and the soundproofing performance is extremely high. In particular, due to the presence of the internal panel 2 that serves as a drop-in portion, it is generally difficult to prevent sound in the low frequency range. However, in the door of the present invention, the restraint member 6 and the caulking member 7
Since the inner panel 2 and the outer frame 1 are integrated, even a sound in a low frequency range does not leak.

[Brief description of drawings]

FIG. 1: Front view of door of the present invention FIG. 2: Perspective view of inner panel, FIG. 3: Front view when inner panel is arranged on outer frame, FIG. 4: IV-IV arrow of FIG. Figure, Figure 5: Enlarged cross-sectional view of the gap between the outer frame and the inner panel, 1 ... Outer frame, 1a ... Vertical frame, 1b ... Horizontal frame, 2 ... Inner panel, 3 ... Frame, 4a ... … Vertical frame, 4b …… Horizontal frame, 5 …… Sound absorbing material, 6 …… Restricting material, 7 …… Caulking material, 8a …… Sound insulation sheet, (internal panel 2), 8b …… Sound insulation sheet (external 1
), 9a ... Surface material (for inner panel 2), 9b ... Surface material (for outer frame 1)

Claims (1)

[Scope of utility model registration request] 1. A sound insulation sheet 8b having a surface material 9b laminated on the front and back surfaces of a frame is adhered to form an outer frame 1, while a sound absorbing material 5 is disposed in the frame, and the surface material 9a is provided on the front and back surfaces thereof. The sound insulation sheet 8a is laminated to form an inner panel 2 having a thickness smaller than that of the outer frame 1, and the inner panel 2 is inserted into the outer frame 1, in which case a gap between the inner panel 2 and the outer frame 1 is formed. A restraint material 6 is fitted into the outer frame 1, the inner panel 2, and a space between the restraint material 6 is filled with a caulking material 7. Further, the frame 3 straddles the caulking material 7, and the outer frame 1, the inside A door that extends across the panel 2 and holds both of them from the front and back sides.