A soundproof door

Abstract

The utility model discloses a soundproof door, including a door leaf, a door cover and a soundproof door body, wherein the door leaf is installed on a wall, a door cover is arranged on the inner side of the door leaf, and the door cover is wrapped around the outer side of the soundproof door body, the interior of the soundproof door body is filled with a cross hollow wooden board, a soundproof rubber strip is installed on one side of the cross hollow wooden board, a cross hollow knife edge is obliquely opened on the edge of the cross hollow wooden board, a sealing threshold and a soundproof pair are formed after the soundproof door body and the door cover are closed, grooves and tongues are arranged on both sides and the top side panels of the soundproof door body, and a PU coated sealing strip is installed on the side of the door cover. The soundproof door adopts full filling, and the overall stability of the door leaf is strong, the firmness is high, and it is not easy to deform; the soundproof door adopts a cross hollow wooden board, which is a solid wooden board with a large number of strip holes obliquely carved, the holes penetrate the wooden board and are arranged crosswise, and the cross propagation of sound in the holes will cause loss, thereby achieving the effect of absorbing sound.

Description

Technical Field

[0001] The utility model relates to the technical field of home furnishing and decoration, in particular to a sound insulation door. Background Art

[0002] The existing conventional wooden doors have a relatively simple structure and are made of relatively simple materials. The sealing performance of such doors is generally poor, which causes sound to easily propagate through the gap between the door leaf and the door frame, thus failing to achieve a good sound insulation effect. After the door is closed, due to the poor sealing performance of the door gap, sound can easily pass through the door gap and propagate, making the sound insulation performance of the door very poor.

[0003] According to the characteristics of the human auditory system, we know that the sound wave frequency that normal people can hear is usually between 20 Hz and 20,000 Hz. Common indoor noises, such as the sound of electrical appliances and traffic noise, mostly have frequencies between 250 Hz and 1,000 Hz. Therefore, if the door's sound insulation performance is not good, these noises can be easily heard, thus affecting people's quality of life. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the existing wooden door technology and provide a sound insulation door which can reduce the sound intensity within the frequency range of conventional indoor noise and normal human voice.

[0005] The comprehensive sound insulation strength of the utility model under conventional indoor noise and normal human voice frequency is 36.9dB;

[0006] The following is the soundproofing volume of the soundproof door at different frequencies:

[0007] ①Sound center frequency: 250Hz, sound isolation: 32.1dB

[0008] ②Sound center frequency: 315Hz, sound isolation: 34.7dB

[0009] ③Sound center frequency: 400Hz, sound isolation: 35.3dB

[0010] ④Sound center frequency: 500Hz, sound isolation: 33.7dB

[0011] ⑤Sound center frequency: 630Hz, sound isolation: 34.4dB

[0012] ⑥Sound center frequency: 800Hz, sound isolation: 34.7dB

[0013] ⑦Sound center frequency: 1000Hz, sound isolation: 36.9dB

[0014] The comprehensive sound insulation intensity is 36.9dB.

[0015] The technical solution is as follows:

[0016] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a soundproof door, comprising a door leaf, a door frame and a soundproof door body, the door leaf being installed on a wall, a door frame being arranged on the inner side of the door leaf, and the door frame being wrapped around the outer side of the soundproof door body, the interior of the soundproof door body being filled with cross hollow wooden boards, a soundproof rubber strip being installed on one side of the cross hollow wooden boards, a cross hollow knife edge being obliquely provided on the edge of the cross hollow wooden boards, a sealed threshold and a soundproof pair being formed when the soundproof door body and the door frame are closed, grooves and tongues are arranged on both sides and the top side panel of the soundproof door body, and a PU-coated sealing strip is installed on the side of the door frame.

[0017] Preferably, the cross hollow wooden board is a solid wooden board, the cross hollow knife edges are strip holes distributed at equal intervals, and the cross hollow knife edges penetrate the cross hollow wooden board and are arranged crosswise.

[0018] Preferably, the door frame adopts a double-layer stop bar structure, the stop bars are spliced ​​and fixed in a stepped shape, the stepped position of the stop bars matches the position of the groove tongue and groove, and the soundproof door body needs to be flat and free of deformation.

[0019] Preferably, the door frame is provided with a sealing strip installation slot at a concave corner, and the barb of the PU-coated sealing strip is inserted into the installation slot and fixed to the door frame.

[0020] Preferably, the sound insulation pair is a connection structure between the sound insulation door body and the door frame in a closed state. After the sound insulation door body is closed, the grooves and tongues on both sides and the top edge of the sound insulation door body are sealed and connected to the PU coated sealing strip of the door frame.

[0021] Preferably, the sealing threshold is arranged on the ground, and the two ends of the sealing threshold are respectively connected to the lower end of the door frame, the sealing threshold is provided with an installation slot on the side close to the soundproof door body, and a PU coated sealing strip is connected to the installation slot, and after the soundproof door body is closed, the bottom edge of the soundproof door body is sealed and connected to the PU coated sealing strip installed on the sealing threshold.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] 1. The soundproof door is fully filled, the door leaf has strong overall stability, high firmness and is not easy to deform;

[0024] 2. The soundproof door adopts cross-hollowed wooden board. The wooden board is solid and has a large number of oblique strip holes. The holes run through the wooden board and are arranged crosswise. The cross-propagation of sound in the holes will cause loss, thus achieving the effect of absorbing sound;

[0025] 3. The soundproof door is provided with a grooved tongue and groove, which matches the position of the double-layer stop strip of the door frame and is sealed with a double-layer sealing strip to form a soundproof pair. At the same time, a threshold is installed at the bottom of the door, and the threshold sealing strip is sealed with the door leaf. The double stop strip is combined with the threshold to make the door body more closed and effectively prevent the penetration of sound. At the same time, it can enhance the buffering when closing the door and reduce the closing sound. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a front view structural diagram of the soundproof door of the utility model;

[0027] Figure 2 This is a schematic diagram of the cross-sectional structure of the A side of the soundproof door of the utility model;

[0028] Figure 3 It is a schematic diagram of the cross-sectional structure of the door cover of the utility model;

[0029] Figure 4 It is a schematic diagram of the cross-sectional structure of the soundproof door and the door frame of the utility model being closed;

[0030] Figure 5 This is a schematic diagram of the structure of the cross-hollowed wooden board of the utility model;

[0031] Figure 6 This is a schematic diagram of the mechanical plate structure of the bridge tunnel of the utility model.

[0032] In the figure: 1. Door leaf; 2. Door frame; 3. Soundproof door body; 4. Sealed door sill; 5. Cross hollow wooden board; 6. Soundproof rubber strip; 7. Grooved tongue and groove; 11. Soundproof pair; 12. PU coated sealing strip; 13. Cross hollow knife edge. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] See also Figure 1-Figure 6The utility model provides a technical solution: a soundproof door, comprising a door leaf 1, a door cover 2 and a soundproof door body 3, the door leaf 1 is installed on a wall, a door cover 2 is arranged on the inner side of the door leaf 1, and the door cover 2 is wrapped around the outer side of the soundproof door body 3, the interior of the soundproof door body 3 is filled with cross hollow wooden boards 5, specifically, the cross hollow wooden boards 5 filled inside the soundproof door body 3 can also be replaced with bridge hole mechanical board filling, a soundproof rubber strip 6 is installed on one side of the cross hollow wooden board 5, and a cross hollow knife edge 13 is obliquely opened on the edge of the cross hollow wooden board 5, a sealed threshold 4 and a soundproof pair 11 are formed after the soundproof door body 3 and the door cover 2 are closed, groove tongue and groove 7 are arranged on both sides and the top side panel of the soundproof door body 3, and a PU coated sealing strip 12 is installed on the side of the door cover 2.

[0035] The cross hollow wooden board 5 is a solid wooden board, and the cross hollow knife edge 13 is a strip hole distributed at equal intervals. The cross hollow knife edge 13 penetrates the cross hollow wooden board 5 and is arranged crosswise; the door cover 2 adopts a double-layer stop bar structure, and the stop bar is spliced ​​and fixed in a stepped manner. The stepped position of the stop bar matches the position of the groove tongue and groove 7, and the soundproof door body 3 needs to be flat and free of deformation; the door cover 2 is provided with a sealing strip installation slot at the concave corner, and the barb of the PU coated sealing strip 12 is inserted into the installation slot and fixed to the door cover 2; the sound insulation pair 11 is the soundproof door body 3 and the door in the closed state. The connection structure of the door cover 2, after the soundproof door body 3 is closed, the two sides and the top edge plate groove tongue and groove 7 of the soundproof door body 3 are sealed and connected with the PU coated sealing strip 12 of the door cover 2; the sealing threshold 4 is arranged on the ground, and the two ends of the sealing threshold 4 are respectively connected with the lower end of the door cover 2, and the sealing threshold 4 is provided with an installation slot on the side close to the soundproof door body 3, and the PU coated sealing strip 12 is docked in the installation slot. After the soundproof door body 3 is closed, the bottom edge of the soundproof door body 3 is sealed and connected with the PU coated sealing strip 12 installed on the sealing threshold 4.

[0036] Compared with traditional wooden doors, the soundproof door according to the utility model has significantly improved sound insulation performance:

[0037] Comparison of airborne sound insulation performance testing of building doors and windows:

[0038] According to the test / determination basis of GB / T8485-2008 "Grading and Test Methods for Airborne Sound Insulation Performance of Building Doors and Windows" in "GB / T29498-2013 Wooden Doors and Windows", the airborne sound insulation performance rating of this soundproof door is 3-4.

[0039] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0040] Embodiment 1:

[0041] The main body 3 of the soundproof door is filled with 8mm medium-density fiberboard + cross hollow wood board 5, and a groove tongue and groove 7 is provided. The door frame 2 adopts a full multi-layer board double-bar door frame, and the lines adopt multi-layer board lines. The sound insulation performance measurement data is Rw+C=36.9dB, which meets the air sound insulation performance assessment level 4.

[0042] Embodiment 2:

[0043] The main body 3 of the soundproof door is filled with 8mm medium-density fiberboard + bridge hole mechanical board 6, and a groove tongue and groove 7 is provided. The door frame 2 adopts a full multi-layer board double-bar door frame, and the lines are made of medium-density fiberboard lines. The sound insulation performance measurement data is Rw+C=31.8dB, which meets the air sound insulation performance assessment level 3.

[0044] Embodiment 3:

[0045] The main body 3 of the soundproof door is made of 6mm medium-density fiberboard + honeycomb paper filling, with a conventional structural style and no tongue and groove. The door frame 2 is a single-bar door frame composed of medium-density fiberboard and multi-layer board, and the lines are multi-layer board lines. The sound insulation performance measurement data is Rw+C=26.7dB, which meets the air sound insulation performance assessment level 2.

[0046] From the comparison of the sound insulation performance of Example 1 and Example 3, it can be found that the sound insulation performance of the soundproof door is 10.2dB higher than that of the conventional door.

[0047] From the comparison of the sound insulation performance of Example 2 and Example 3, it can be found that the sound insulation performance of the sound insulation door is 5.1 dB higher than that of the conventional door.

[0048] From the above summary, it can be concluded that the soundproof door according to the utility model has higher sound insulation performance than the conventional door.

[0049] The embodiments disclosed above are, in all respects, only examples and not the only ones. Therefore, all changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

[0050] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A soundproof door, comprising a door leaf (1), a door cover (2) and a soundproof door body (3), characterized in that: The door leaf (1) is installed on a wall, a door cover (2) is arranged on the inner side of the door leaf (1), and the door cover (2) is wrapped around the outer side of a soundproof door body (3), the interior of the soundproof door body (3) is filled with a cross hollow wooden board (5), a soundproof rubber strip (6) is installed on one side of the cross hollow wooden board (5), and a cross hollow knife edge (13) is obliquely opened on the edge of the cross hollow wooden board (5), and a sealed threshold (4) and a soundproof pair (11) are formed when the soundproof door body (3) and the door cover (2) are closed, and grooves (7) are arranged on both sides and the top side panel of the soundproof door body (3), and a PU coated sealing strip (12) is installed on the side of the door cover (2).

2. A soundproof door according to claim 1, characterized in that: The cross hollow wooden board (5) is a solid wooden board, the cross hollow knife edges (13) are strip holes distributed at equal intervals, and the cross hollow knife edges (13) penetrate the cross hollow wooden board (5) and are arranged in a cross pattern.

3. A soundproof door according to claim 1, characterized in that: The door frame (2) adopts a double-layered stop bar structure, the stop bars are spliced ​​and fixed in a stepped shape, the stepped position of the stop bars matches the position of the groove tongue and groove (7), and the soundproof door body (3) needs to be flat and free of deformation.

4. A soundproof door according to claim 3, characterized in that: The door cover (2) is provided with a sealing strip installation slot at a concave corner, and the barbs of the PU-coated sealing strip (12) are inserted into the installation slot and fixed to the door cover (2).

5. The soundproof door according to claim 1, characterized in that: The sound insulation pair (11) is a connection structure between the sound insulation door body (3) and the door frame (2) in a closed state. After the sound insulation door body (3) is closed, the two sides and the top edge plate groove tongue and groove (7) of the sound insulation door body (3) are sealed and connected to the PU coated sealing strip (12) of the door frame (2).

6. A soundproof door according to claim 1, characterized in that: The sealing threshold (4) is arranged on the ground, and the two ends of the sealing threshold (4) are respectively connected to the lower end of the door frame (2); the sealing threshold (4) is provided with an installation slot at the side close to the soundproof door body (3), and a PU coated sealing strip (12) is docked in the installation slot; after the soundproof door body (3) is closed, the bottom edge of the soundproof door body (3) is sealed and connected to the PU coated sealing strip (12) installed on the sealing threshold (4).

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