JP2017101402A - door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wooden door having fireproof property and noise insulation property.SOLUTION: In a door 1 having a frame material 2 placed in a rectangular shape and face panels 6 fixed to both sides of the frame material 2, a plurality of edge members 3 are bridged between facing frame materials 2 and the space surrounded by the frame material 3 is divided into a plurality of small spaces, and a face member 5 for covering the plurality of small spaces is interposed between the space and the face panel 6. The face member 5 has a plurality of first face members 51 for covering each of the plurality of small spaces and second face members 52 that cover the first face member 51, the frame material 2 and the edge member 3 and that are positioned between the space and the face panel 6 and that are integrally laminated with the first face member 51.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a door, and more particularly to a wooden door having fireproofing and soundproofing properties.

Conventionally, doors such as doors (sliding doors) and sliding doors of various materials have been used between the entrances of houses, the entrances and exits of accommodation rooms, and between rooms.
Among these, wooden doors are used as fire doors because they are excellent in design and texture and have a certain fire resistance. This is because although the surface material and the like are made of wood and combustible, the combustion is relatively slow among combustibles, and the performance to prevent the spread of fire (flame shielding performance) is recognized.
By the way, in recent years, accommodations such as apartment buildings such as condominiums or hotels have increased the number of buildings with structures that are susceptible to sound reverberation, such as corridor types in corridors and corridor types. Soundproofing that does not leak into the hallway is required.
In response to such a request, in Patent Document 1, a core material having a fireproofing / soundproofing effect is loaded in a space formed by a frame, and a fireproof sheet is provided so as to sandwich the core material from the front side and the back side, A wooden fire / soundproof door with a wooden surface attached to the front and back surfaces has been proposed.

JP-A-10-37617

However, the door of Patent Document 1 has a problem in sound insulation.
That is, the door is a shield and is known to have a sound insulation effect corresponding to the weight per unit area of the door, but the door of Patent Document 1 has one surface material on the front and one back. It is a structure only, and it was the structure which bears a sound-insulating effect exclusively by members, such as a core material.
Further, the door of Patent Document 1 has insufficient measures against the coincidence effect that lowers the sound insulation effect in a predetermined sound range and the low-frequency resonance transmission phenomenon.
The coincidence effect is a phenomenon in which when a sound having a specific frequency (coincidence frequency) is incident on the member, the member resonates, and the sound insulation performance is significantly reduced at the specific frequency. It is known that this coincidence frequency varies depending on the thickness of members of the same quality.
In this regard, in the door of Patent Document 1, the same surface material provided on the front side and the back side has the same thickness (see FIGS. 3 to 6), and the coincidence frequency is common to each surface material. For this reason, it is conceivable that the sound insulation performance of the sound having such a frequency is significantly lowered.
The low-frequency resonance transmission phenomenon is a phenomenon in which sound of a specific frequency resonates through air pulsation in an air layer in a laminated structure in which surface materials are laminated on both sides via an air layer.
In this regard, since the door of Patent Document 1 has a space for loading the core material between the surface materials, a low-frequency resonance transmission phenomenon occurs with respect to a sound having a specific frequency. It is thought that the sound insulation performance declines.

  This invention is made | formed in view of the above situations, and it aims at provision of the door excellent in not only fireproof but soundproofing by setting it as the intrinsic | native structure which assembled and laminated | stacked the predetermined | prescribed member. .

  The door which concerns on this invention is a door which has the frame material arrange | positioned in square shape, and the surface material fixed to both surfaces of this frame material, A plurality of ridge materials between the frame materials which the said square frame material opposes A space surrounded by the frame material and divided into a plurality of small spaces, and a face material covering the plurality of small spaces is interposed between the space and the surface material, and the surface The material covers a plurality of first surface materials that respectively cover the plurality of small spaces, the first surface material, the frame material, and the collar material, and is positioned between the surface material and the first surface material. And a second face material laminated integrally.

  ADVANTAGE OF THE INVENTION According to this invention, the door excellent in the soundproof property with fireproof property can be provided.

It is the schematic of the door which concerns on embodiment of this invention, (a) is a front view (including the figure which shows a partial internal structure), (b) is sectional drawing of AA part, (c) is A-. It is a principal part expanded sectional view of the A section. 2A and 2B are perspective cross-sectional views of a portion B in FIG. 1, in which FIG. 1A illustrates a case where the surface material has a two-layer structure, and FIG. (A) is a front view of the 1st layer containing a frame material, a saddle material, and a core material, (b) is an important section expanded sectional view of an AA section. (A) is a front view of the 2nd layer containing a 1st face material, (b) is a principal part expanded sectional view of AA part. (A) is a front view of the 3rd layer containing a 2nd surface material and an auxiliary material, (b) is a principal part expanded sectional view of AA part. (A) is a figure which shows arrangement | positioning of a saddle material, (b) is a principal part expanded sectional view of the AA part regarding the door of Example 1. FIG. (A) is a figure which shows arrangement | positioning of a straw material regarding the door of Example 2, (b) is a principal part expanded sectional view of AA part. (A) is a figure which shows arrangement | positioning of a saddle material, (b) is a principal part expanded sectional view of the AA part regarding the door of Example 3. FIG. (A) is a figure which shows arrangement | positioning of a saddle material, (b) is a principal part expanded sectional view of the AA part regarding the door of Example 4. FIG. (A)-(d) is a table | surface which shows the sound transmission loss regarding Examples 1-4.

Hereinafter, a door according to an embodiment of the present invention will be described with reference to FIGS.
As shown to Fig.1 (a), the door 1 of this embodiment consists of a square-shaped doorplate, for example, a hinged door (door) which is not shown in figure is attached to this doorplate, and a hinged door (door) is produced. The The door plate can be used not only for doors but also for sliding doors and other doors.
As shown in FIGS. 1A to 1C and FIG. 2, the door 1 includes a frame material 2, a collar material 3, a core material 4, a face material 5, a surface material 6, and an auxiliary material 7. It is the structure which laminated | stacked combining.
Specifically, the door 1 forms a plurality of small spaces by laying a plurality of eaves 3 between the opposing frame members 2 of the frame members 2 arranged in a square shape, It is formed by covering the face material 5 in a state where the core material 4 is loaded, and further overlapping the entire door plate with the surface material 6.
Each of the face material 5 and the surface material 6 has a double structure in which two plate-like members are laminated. The face material 5 is a first face material 51 and a second face material 52, and the surface material 6 is a first material. A surface plate 61 and a second surface plate 62 are included. The auxiliary material 7 is provided on the outer periphery of the second face material 52.
Next, each of these members will be described in detail.

The frame member 2 is a member disposed along the entire outer periphery of the door 1 and plays a role of suppressing warpage of the door 1 during normal times and during combustion.
For this reason, a wood material having a relatively high density is used as the frame material 2.
Specifically, 0.6 / cm ^{3 to} 0.8 / cm ³ rubber laminated material or pine laminated material is used.
In the present embodiment, a rubber laminated material having a density of 0.6 g / cm ³ is used as the frame member 2.

The eaves member 3 is a member for maintaining the smoothness of the surface material 6 and increasing the overall rigidity of the door 1. The eaves member 3 a disposed in the longitudinal direction along the inner side of the frame member 2, and the frame member 2 in the width direction along the inner side of 2, and between the upper frame material 2 and the lower frame material 2, a horizontal rib material 3b disposed at a predetermined interval in the lateral direction, have.
In this embodiment, the space | interval arrangement | positioning of the horizontal covering 3b is made to become 463 mm or less with respect to the door of 2400 mm in height. This is because if the spacing between the horizontal members 3b is larger than 463 mm, the surface material 6 is likely to be distorted at normal times, and the required rigidity cannot be obtained, and the overall distortion of the door 1 is increased during combustion, reducing the flame shielding effect. It is because it makes it.
Further, the eaves 3 disposed along the inside of the frame 2 can be omitted.
The “frame material” in the present invention includes the case of only the frame material 2 and the case of the frame material 2 and the eaves material 3 arranged along the inside of the frame material 2.

Further, as shown in FIG. 2, the collar member 3 has the same thickness as that of the frame member 2, and a notch corresponding to the thickness of the first face member 51 is formed on the front and back surfaces of the end facing the core member 4. Thus, when the first face material 51 is disposed, the first face material 51 is prevented from protruding from the front surface or the back surface of the brazing material 3. That is, by setting the surface of the first face material 51 and the face of the brazing material 3 to the same level, the second face material 52 can be bonded to the first face material 51 and the brazing material 3 with good bonding properties so that there is no gap. I am doing so.
In addition, when the eaves 3 is omitted, the notches are made in the frame 2.

The core material 4 is a member having fire resistance and sound absorption, and is loaded in each of the small spaces partitioned by the recumbent material 3b. Since the core material 4 occupies a certain volume in the internal space of the door 1, a lightweight material is preferable.
In the present embodiment, rock wool (density 80 kg / m ³ ) is used as the core material 4. However, the present invention is not limited to this, and other members having fire resistance and sound absorption can be used as the core material 4. For example, glass wool, a phenol resin foam board, a calcium silicate heat insulation board, etc. can be used.

The first face member 51 is a plate-like member having a sound insulating property, and in a state where the core material 4 is loaded in a plurality of small spaces partitioned by the horizontal covering material 3b, each small space is separated from the front side and the back side. It arrange | positions so that it may cover. Thereby, the core material 4 is fixed and subsequent work efficiency can be improved.
Further, when an inorganic member is used as the second face member 52 described later, the inorganic member is relatively brittle, and the second face member 52 cannot withstand the stress caused by the work during manufacture and the stress due to the weight of the core member. May cause tearing or peeling.
For this reason, the first face material 51 also plays a role of supplementing the mechanical strength of the second face material 52.
Specifically, the first face material 51 uses MDF (medium density fiber board) having a thickness of 2.5 to 5.5 mm and a density of 0.6 to 0.9 g / cm ³ . In the present embodiment, MDF having a density of 0.8 g / cm ³ is used as the first face material 51.
However, the present invention is not limited thereto, and for example, a normal plywood, a particle board, an HDF (High Density Fiber Board) or the like can be used as the first face material 51 as a member having sound insulation properties.

The second face material 52 is a plate-like member having fire resistance to such an extent that it does not melt and break even at an extremely high temperature of about 1000 degrees, and is divided into a first face material 51 and a surrounding frame for each small space. It arrange | positions so that a part of the material 2 and the brazing material 3 may be covered.
By making the face material 5 into a double structure in which the first face material 51 and the second face material 52 are laminated as described above and interposing between the surface material 6, the frame material 2, Since it is difficult for the material 3 and the first face material 51 to directly hit the flame, the flame barrier property of the door 1 can be improved.
Further, by integrally laminating the first face material 51 and the second face material 52, the thickness of the face material 5 as a whole can be increased, and thereby the sound insulation of the door 1 can be enhanced.
In the present embodiment, an inorganic member such as a silica alumina impregnated glass nonwoven fabric (average mass 1400 g / m ² ) having a thickness of 2 mm is used as the second face material 52. However, the present invention is not limited to this, and any member having the above fire resistance can be used as the second face material 52. For example, a volcanic glassy laminated board, a calcium silicate board, a gypsum board, a magnesium oxide board, or the like can be used as the second face material 52.

The auxiliary material 7 is a member for firmly bonding the surface material 6, and is disposed on the outer periphery of the second face material 52.
As described above, when an inorganic member is used as the second face material 52, the inorganic member is relatively brittle. For this reason, if the second face member 52 is used as an adhesive medium between the first face member 51, the frame member 2 and the saddle member 3, and the surface member 6, the impact or cooling caused by use during or after the work is installed. There is a possibility that the second face material 52 is torn or peeled off due to the stress generated by the expansion / contraction of the material due to the difference / absorption of moisture.
For this reason, the auxiliary material 7 also plays a role of compensating for the adhesive defect due to the weak mechanical strength of the second face material 52.
The auxiliary material 7 has a thickness equal to or greater than that of the second face material 52. If it does in this way, since the adhesion surface of the frame material 2, the collar material 3, the 1st surface material 51, and the surface material 6 will contact | abut reliably, these can be adhere | attached firmly.
Specifically, the auxiliary material 7 is a normal plywood having a density of 0.6 to 0.9 g / m ³ . In this embodiment, lauan ordinary plywood having a density of 0.6 g / m ³ is used as the auxiliary material 7.
However, the present invention is not limited to this, and a single plate laminated material, natural wood board material, particle board, MDF, HDF, or the like can be used as the auxiliary material 7.

The surface material 6 is a wooden member that covers the entire surface of the door board, and thus bears the smoothness and design of the surface of the door 1. The surface material 6 is fixed to the base made of the auxiliary material 7 and the second surface material 52 by adhesion. Adhesion between the surface material 6 and the base is performed using a liquid adhesive such as a vinyl acetate emulsion adhesive.
The surface material 6 constitutes one member by integrally laminating a plurality of surface plates. For example, as shown in FIG. 2A, a laminate of a first surface plate 61 and a second surface plate 62 can be used as the surface material 6, and as shown in FIG. A laminate of one surface plate 61, second surface plate 62, third surface plate 63, and fourth surface plate 64) can be used as the surface material 6.
For example, the first surface plate 61 and the second surface plate 62 use ordinary plywood having a thickness of 2.5 to 5.5 mm, and the third surface plate 63 and the fourth surface plate 64 have a thickness of 0.2 to 1.0 mm. Natural wood veneer can be used.
Thus, by using the surface material 6 in which a plurality of surface plates are integrally laminated, the thickness of the entire door plate can be increased, and thereby the sound insulation of the door 1 can be enhanced.

  Although the surface material 6 of this embodiment uses the laminated body of the 1st surface plate 61 and the 2nd surface plate 62, it is not restricted to this. For example, only the first surface plate 61 can be used as the surface material 6, and when three surface plates are used, the first surface plate 61, the third surface plate 63, and the second surface plate 62 are laminated in this order. A laminated body can be used as the surface material 6. It is also possible to select from five or more surface plates.

The surface material 6 is attached by first bonding the first surface plate 61 and the second surface plate 62 with an adhesive in advance and bonding them to the base in a state where they are laminated together.
This is a case where the first surface plate 61 is bonded to the base (the second face material 52 or the like), and then the second surface plate 62 is overlapped and bonded (that is, each surface plate is bonded individually) ), A slight space is generated in some places between the inorganic plate (second surface material 52) and the surface material 6 where unevenness is likely to occur. In this state, the second surface plate 62 is liquidized on the first surface plate 61. This is because when the adhesive is pressed using the adhesive, the adhesive flows due to pressure, and a large amount of adhesive is accumulated in the open space of the base plate of the surface plate, resulting in adhesive spots. That is, the spots cause a slight distortion in the surface material 6 as the adhesive is dried, which is a design defect.
On the other hand, a plurality of surface materials are laminated and bonded in a smooth manner in advance, and this is bonded to the second face material 52 and the auxiliary material 7 so that the surface is hardly distorted and the design property can be maintained.

Each member can be joined using a liquid adhesive or a U-shaped metal fitting.
For example, the face material 5 is preferably joined to the target member using a U-shaped bracket. This is because the assumed temperature at the time of fire is about 1000 degrees, so if an adhesive with a low melting point of the main component, such as a vinyl acetate emulsion adhesive, is used, it cannot be dissolved and the bonding property cannot be maintained, and the fireproof performance is improved. Because it will be lacking.
Moreover, it is preferable to adhere | attach the surface material 6 and each surface board which comprises the surface material 6 using an adhesive agent as mentioned above, and, thereby, the designability of the door 1 can be maintained.

[How to make a door]
Next, a method for manufacturing the door 1 using each of the above members will be described.
First, the frame material 2 is arranged in a square shape, and the vertical frame material 3a and the horizontal frame material 3b are arranged in the vertical direction and the horizontal direction along the inside surrounded by the frame material 2, and the upper frames facing each other. Between the material 2 and the lower frame material 2, the horizontal saddle material 3 b is arranged at a predetermined interval. As a result, a plurality of small spaces partitioned by the horizontal bar 3b are formed.
Next, the frame material 2 and the saddle material 3 that are close to each other are joined and fixed by a U-shaped bracket. If it does in this way, the framework which consists of frame material 2 and gutter material 3 can be strengthened to such an extent that there will be no trouble in carrying at the time of manufacture.
Subsequently, the core material 4 is loaded into each of a plurality of small spaces separated by the horizontal rib material 3b.
Thereby, as shown in FIG. 3, the 1st layer which consists of the frame material 2, the collar material 3, and the core material 4 is formed.

Next, the front side and the back side of each small space are covered with the first face material 51 and covered.
At this time, the first face member 51 is joined to the adjacent saddle member 3 or frame member 2 by a U-shaped bracket. If it does in this way, the 1st face material 51 can be strengthened to such an extent that there will be no trouble in carrying at the time of manufacture.
Thereby, the 2nd layer which consists of the 1st face material 51 shown in FIG. 4 on a 1st layer is laminated | stacked.

Subsequently, the auxiliary material 7 is arranged along the outer periphery of the front and back surfaces of the frame material 2 combined in a square shape, and is arranged on the front and back surfaces of the reed material 3b.
Next, the 2nd face material 52 is arrange | positioned in the area | region enclosed by the auxiliary material 7, and it joins with the U-shaped metal fitting with respect to the frame material 2 and the collar material 3 which are the foundation | substrate.
Thereby, on the 2nd layer laminated | stacked on the 1st layer, the 3rd layer which consists of the auxiliary material 7 and the 2nd face material 52 shown in FIG. 5 is laminated | stacked.

And the manufacture of the door 1 is completed by adhere | attaching the surface material 6 to the auxiliary material 7 and the 2nd surface material 52. FIG.
Thereby, as shown in FIG. 2, the door 1 by which the 1st-3rd layer and the surface material 6 were laminated | stacked is formed.

According to the door 1 of this embodiment manufactured in this way, it has excellent fireproofing and soundproofing properties.
Regarding fire resistance, the core material 4, the face material 5, and the surface material 6 function as fireproof members.
The core material 4 and the second face material 52 are fireproof members that themselves have fireproofing properties. Further, although the surface material 6 is a combustible material, it is relatively slow to progress among the combustible materials and can prevent the spread of fire for a certain time (flame shielding performance).
Further, the face material 5 and the surface material 6 are members each formed by laminating a predetermined member double, and furthermore, since these are arranged on both the front side and the back side, more flame shielding performance. Can be improved.
In addition, since the floor covering material 3b is arranged at a predetermined interval to increase the rigidity of the door 1, it is possible to suppress the distortion of the surface material 6 and maintain the flame shielding performance in the event of a fire.
That is, the door 1 of this embodiment not only includes a fire prevention member, but also has a unique structure effective for fire prevention, thereby effectively improving the fire prevention performance.

Regarding soundproofing, the core material 4, the face material 5, and the surface material 6 function as a soundproofing member.
Among these, the face material 5 and the surface material 6 are shielding objects and exhibit a certain sound insulation effect.
Further, the face material 5 and the surface material 6 are members each formed by laminating predetermined members in a double layer, and are disposed on both the front side and the back side. For this reason, the weight per area (surface specific gravity) of the door 1 increases, and the sound insulation effect can be further improved.
Among these, since the surface material 6 covers the whole door 1, the sound insulation effect can be brought about on the whole door 1 on average.
The area of the small space in which the core material 4 is loaded is relatively lacking in surface specific gravity. By using the face material 5 in this portion, the sound insulation effect is complementarily improved.
Further, the core material 4 is a member having a sound absorbing effect, and is a soundproof material that itself contributes to soundproofing. However, since the thickness of the door 1 is limited, the door 1 is sandwiched between the front side and the back side by sound insulation members (the face material 5 and the surface material 6), and the air sound is reverberated inside the core material 4, and as a result, the sound is effective. Is attenuated.
Thus, the door 1 of this embodiment not only includes a soundproof member but also has a unique structure effective for soundproofing, thereby effectively enhancing soundproof performance.

Here, regarding the coincidence effect and the low-frequency resonance transmission phenomenon, the configuration of the door 1 of the present embodiment that can suppress the sound insulation effect from being lowered due to these phenomena will be described.
The coincidence effect refers to a phenomenon in which sound insulation performance is reduced with respect to sound having a specific frequency (coincidence frequency) corresponding to a thickness of a shield having a thickness.
The low-frequency resonance transmission phenomenon refers to a phenomenon in which, when a homogeneous member is laminated through air, the vibration in one member vibrates (resonates) the other member through air pulsation, thereby reducing the sound insulation performance.
In the present embodiment, as a measure for the coincidence effect, the thickness of the face material 5 and the surface material 6 is different between the front side and the back side, and as a measure for the low-frequency resonance transmission effect, The configuration is such that the intervals are different.

[Configuration in which the thickness of the face material 5 and the surface material 6 is different between the front side and the back side]
The door 1 of the present embodiment has a configuration in which the thickness of either the face material 5 or the surface material 6 or both the face material 5 and the surface material 6 which are located on both surfaces of the frame material 2 is different.
For example, regarding Examples 1 to 4 described later, as shown in FIGS. 6B, 7B, 8B, and 9B, the first face material 51 and the first surface plate 61 are used. About one or both, thickness is changed with the front surface and the back surface.
Here, it is known that the coincidence frequency causing the coincidence effect is different depending on the thickness in the case of a homogeneous member.
For example, if the coincidence frequency of the first face member 51 having a thickness of 5.5 mm is f1, and the coincidence frequency of the first face member 51 having a thickness of 4.0 mm is f2, the relationship f1 ≠ f2 holds.
For this reason, when the 1st face material 51 of thickness 5.5mm is arrange | positioned on the front side, the 1st face material 51 of thickness 4.0mm is arrange | positioned on the back side, and the sound of frequency f1 is entered from the front side, Due to the coincidence effect, even though the first surface material 61 on the front side is transmitted, the first surface material 51 on the back side is not transmitted. In addition, when a sound having a frequency f1 is incident from the back side, the coincidence frequency of the first face material 51 on the back side is f2 (≠ f1), so that the sound is transmitted by the coincidence effect and enters the first face material 51 on the front side. Never reach.
On the other hand, if the first face material 51 having a thickness of 5.5 mm is disposed on the front side and the back side, and a sound having a frequency f1 is incident from the front side, the sound is caused by the coincidence effect. Further, the light passes through the first surface material 51 on the back side and reaches the surface material 6. If it does so, the sound of the frequency f1 will become easy to permeate | transmit the door 1, and sound insulation performance will fall. This is the same when the sound is incident from the back side.
On the other hand, in the door 1 of this embodiment, the thickness of the face material 5 or the surface material 6 is made different between the front side and the back side, and the coincidence frequency is made different so that the coincidence effect is distributed between the front side and the back side. ing.
For this reason, according to the door 1 of the present embodiment, there is no significant drop in the sound insulation performance due to the coincidence effect, and stable sound insulation performance can be exhibited.

[Regarding the configuration in which the spacing between the horizontal members 3b is different]
The door 1 of the present embodiment has a configuration in which the sizes of the plurality of small spaces divided by the horizontal covering 3b are made different by installing the adjacent horizontal covering 3b at different intervals. Yes.
For example, regarding Examples 1 to 4 to be described later, as shown in FIGS. 6A, 7A, 8A, and 9A, the arrangement position of the recumbent material 3b is changed. , The spacing between each brazing material is non-uniform.
Thereby, the areas of the respective sections divided by the horizontal bar 3b are made different, and the volumes of the corresponding small spaces are made different.
Here, it is known that the low-frequency resonance transmission effect resonates at a specific frequency corresponding to the volume of air when the same-quality plate materials are laminated via air. This is because the repulsive force (deflection) in the plate material varies depending on the amount of air. Specifically, when there is a lot of air, the repulsive force is weak, and resonance occurs at low sound compared to when there is little air, and when there is little air, the repulsive force is strong, and resonance occurs at high sound compared with when there is much air.
When this is applied to the door 1 of this embodiment, the resonating frequency is different between a region where the spacing between the saddle members 3b is wide and a region where the spacing between the saddle members is narrow.
For example, the frequency that resonates in the region X where the spacing between the ribs 3b is X is f3, and the frequency that resonates in the region Y where the spacing between the ribs 3b is Y (<X) is f4. And
In this case, when a sound having a frequency f3 is incident on the door 1 of the present embodiment, in the region X, the sound may be transmitted due to resonance due to the low-frequency resonance transmission effect. Does not happen and the sound does not pass through.
On the other hand, suppose that the spacing between the horizontal members 3b of the horizontal member 3b is set to be equal to X. When a sound having a frequency f3 is incident, resonance occurs in all regions due to the low-frequency resonance transmission effect, and the sound is transmitted. Will do. For this reason, the sound insulation performance for the sound of the frequency f3 is significantly lowered.
That is, the door 1 of the present embodiment has a configuration in which the intervals between the ribs of the horizontal bar 3b are made different so that the frequency of the low-frequency resonance transmission phenomenon that has conventionally occurred in the case of equal intervals is concentrated. To be distributed.
For this reason, according to the door 1 of the present embodiment, there is no significant drop in the sound insulation performance due to the low-frequency resonance transmission phenomenon, and stable sound insulation performance can be exhibited.

[Example 1]
As shown in FIG. 6B, the first face material 51 (MDF) having a thickness of 5.5 mm and 4.0 mm is disposed on the front side and the back side of the core material 4 (rock wool), and the thicknesses are both on the first side material 51 (MDF). A second face material 52 (plywood) having a thickness of 2.0 mm is disposed on the first surface material 61 (plywood) having a thickness of 6.5 mm and 4.6 mm, and a second material having a thickness of 2.5 mm. The surface material 6 on which the surface material 62 (the veneer decorative plywood) is laminated is disposed, and as shown in FIG. 6 (a), the horizontal saddle material 3b is changed from the first collar material 31 to the second collar material 32, The distance between the fifth bridging member 35 to the sixth brazing member 36 is 312 mm, the second bridging member 32 to the third bridging member 33, the third bridging member 33 to the fourth bridging member 34, and the fourth bridging member. The door 1 was manufactured by arranging each of the material 34 to the fifth saddle member 35 so as to be 463 mm.
And the sound transmission loss measurement was performed for 18 bands of 1/3 octave band center frequency 100 to 5000 Hz based on JIS A1416, and the measured values shown in FIG. In addition, this measured value is the value which converted the measured value of 1/3 octave band based on JISA4702.

[Example 2]
As shown in FIG. 7, a door 1 was manufactured in the same manner as in Example 1 except that a seventh rib 37 was provided as the horizontal bar 3b and the interval between the horizontal bars 3b was changed.
Specifically, the distance between the first rod material 31 to the second rod material 32, the sixth rod material 36 to the seventh rod material 37 is 223.5 mm, and the second rod material 32 to the third rod material. The distance between the material 33, the fifth brazing material 35 to the sixth brazing material 36 is 300 mm, and the distance between the third brazing material 33 to the fourth brazing material 34 and the fourth brazing material 34 to the fifth brazing material 35. The door 1 was manufactured by arranging the reed material 3b so as to be 463 mm.
And the measurement similar to Example 1 was performed with respect to this door 1, and the measured value shown in FIG.10 (b) was obtained.

[Example 3]
As shown in FIG. 8, the thickness of both the front side and back side first face members 51 is 5.0 mm, the thickness of the front side first surface plate 61 is 9.0 mm, and the thickness of the back side first surface plate 61 is 2. A door 1 was manufactured in the same manner as in Example 2 except that the thickness was 3 mm.
And the measurement similar to Example 1 was performed with respect to this door 1, and the measured value shown in FIG.10 (c) was obtained.

[Example 4]
As shown in FIG. 9, the thickness of the front face first face member 51 is 4.0 mm, the thickness of the back face first face member 51 is 2.7 mm, and the thicknesses of the front face and back face first surface plates 61 are both 2. A door 1 was manufactured in the same manner as in Examples 2 and 3 except that the thickness was 3 mm.
And the measurement similar to Example 1 was performed with respect to this door 1, and the measured value shown in FIG.10 (d) was obtained.

As shown in FIGS. 10A to 10D, the sound insulation performance in Examples 1 to 3 all satisfied the T3 class, and the sound insulation performance in Example 4 was evaluated to satisfy the T2 class.
In Example 2, in comparison with Example 1, as a result of increasing the number of horizontal bales 3b and making the interval between the bales more uneven, the sound insulation performance was improved at 500 to 2000 Hz. .
In Example 3, in comparison with Example 2, as a result of increasing the difference between the thickness of the first surface plate 61 between the front surface and the back surface, evaluation that the sound insulation performance becomes higher at 250 Hz and 2000 to 4000 Hz was obtained. .
In Example 4, in comparison with Examples 1 to 3, the thickness of the first face material 51 and the surface material 6 is reduced to reduce the thickness of the door plate by 10 mm, but the weight is reduced to 250 to 1000 Hz. Although a decrease in sound insulation performance of about 2 dB was observed, an evaluation satisfying the T2 grade was obtained.

  Although the present invention has been described with reference to the preferred embodiments, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the present invention. Nor.

For example, in the above-described embodiment, the door 1 in which a plurality of reed members 3b are disposed between the upper frame member 2 and the lower frame member 2 facing each other has been described. It can also be set as the structure which arrange | positions the vertical rod material 3a between the frame materials 2 of the right part.
In this case, by arranging the vertical saddle member 3a with different intervals between the adjacent frame members, the region where the resonance occurs is dispersed similarly to the above-described embodiment, and the sound insulation effect due to the low-frequency resonance transmission effect is obtained. Depression can be suppressed.
Further, a plurality of reed members 3b are disposed between the upper frame member 2 and the lower frame member 2 facing each other, and a plurality of horizontal members 3b are disposed between the left frame member 2 and the right frame member 2 facing each other. The vertical rod material 3a may be disposed, and the horizontal rod material 3b and the vertical rod material 3a may be disposed with different intervals between adjacent frame members.
Moreover, in the above-mentioned embodiment, although the face material 5 and the surface material 6 were each laminated | stacked double, it can be set as the structure which laminated | stacked any one or both in triple or more.

  The present invention can be used in the technical field related to doors such as doors (folding doors) and sliding doors.

DESCRIPTION OF SYMBOLS 1 Door 2 Frame material 3 Frame material 3a Vertical frame material 3b Horizontal frame material 4 Core material 5 Surface material 51 First surface material 52 Second surface material 6 Surface materials 61-64 First-fourth surface plate 7 Auxiliary material

Claims (5)

In a door having a frame material arranged in a square shape and a surface material fixed on both sides of the frame material,
Laying a plurality of eaves between the opposing frame members of the rectangular frame material and dividing the space surrounded by the frame material into a plurality of small spaces;
And a face material covering the plurality of small spaces is interposed between the space and the surface material,
The face material covers a plurality of first face materials that respectively cover the plurality of small spaces, the first face material, the frame material, and the flange material, and is positioned between the surface material and the first surface material. The door characterized by having a 2nd face material laminated | stacked integrally with the face material. In a door having a frame material arranged in a square shape and a surface material fixed on both sides of the frame material,
Laying a plurality of eaves between the opposing frame members of the rectangular frame material and dividing the space surrounded by the frame material into a plurality of small spaces;
Disposing a fiber core material having fire resistance and sound absorption in each of the plurality of small spaces covered by the face material,
And a face material covering a plurality of small spaces in which the core material is disposed is interposed between the surface material,
The face material covers a plurality of first face materials that respectively cover the plurality of small spaces, the first face material, the frame material, and the flange material, and is positioned between the surface material and the first surface material. The door characterized by having a 2nd face material laminated | stacked integrally with the face material.   The door according to claim 1 or 2, wherein an auxiliary material is disposed on an outer periphery of the second face material.   By constructing a plurality of saddles laid between the opposing frame members of the rectangular frame member with different intervals between adjacent saddle members, a plurality of small spaces divided by the saddle members are provided. The door according to any one of claims 1 to 3, wherein the doors have different sizes.   The door according to any one of claims 1 to 4, wherein thicknesses of the face material, the surface material, or the face material and the surface material, which are located on both surfaces of the frame material, are made different.

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