CN217439889U

CN217439889U - Sound insulation door

Info

Publication number: CN217439889U
Application number: CN202221283382.XU
Authority: CN
Inventors: 蔡雅千
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2022-09-16
Anticipated expiration: 2032-05-26

Abstract

The utility model relates to a building equipment, a soundproof door promptly, including frame (2), panel (3) and door core (4), its characterized in that: the door core (4) is provided with a plurality of lath-shaped supporting strips (5), and a plurality of inclined holes (8) are formed in the supporting strips (5). The beneficial effects are that: the strong point of door core to door panel is many and even, makes the intensity of door increase by a wide margin, and each strong point homoenergetic absorbs and disturbs the vibration wave of sound, and the inclined plane of each inclined hole can be dispersed the sound wave and turn back and the energy reduces suddenly to the effect of shielding sound has been reached. In addition, the main part of the silencing sheet has small volume, can be made of leftover materials, greatly reduces the cost of the product, and is expected to become a preferred device in places such as rooms, offices and the like.

Description

Sound insulation door

Technical Field

The utility model relates to a building equipment, a soundproof door promptly.

Background

The door is the necessary equipment of house entry, and current door is mostly enclosed by the panel of frame and both sides around, in order to increase intensity, is equipped with the lath that plays the supporting role between the panel of both sides more, and this lath is also called the door core. In order to reduce the weight of the door, reduce the consumption of raw materials and reduce the cost, the slats of the door core are provided with gaps instead of completely solid filling. Researches show that the door core formed by the battens not only can support the panel, but also has certain sound insulation effect. Without the supporting laths, the effect of resonance and sound amplification can be generated by only depending on the frame and the panels on the two sides, and the sound insulation effect of the door is poor. The lath is arranged between the two side panels, so that the path of sound wave propagation can be disturbed, the resonance phenomenon is controlled, and the sound insulation effect is obviously enhanced. However, the door core of the existing door mainly functions to support the panel, so the structure is simple, the slats are mostly installed vertically or obliquely, or form quadrangle and polygonal patterns, and the sound insulation effect is limited. After many doors are closed, people still can hear the conversation of the middle and upper voice in the doors when standing out of the doors, which obviously cannot meet the living needs of people and cannot meet the requirements of confidential places such as offices and the like.

Disclosure of Invention

The utility model aims at providing a give sound insulation effectually, the people outside the door can not hear the soundproof door of the interior pitch of going up of door.

The above purpose is realized by the following technical scheme: the utility model provides a soundproof door, including frame, panel and door core, its characteristics are: the door core is provided with a plurality of lath-shaped supporting strips, and a plurality of inclined holes are formed in the supporting strips.

The two sides of the supporting bar are respectively provided with a side plate, a plurality of silencing pieces are arranged between the two side plates, and the inclined hole is formed in the space between every two adjacent silencing pieces.

The cross section of the inclined hole is square, and when the plane of the supporting bar is vertical to the horizontal plane, the included angle between the center line of the inclined hole and the horizontal plane is less than 80 degrees.

When the plane of the supporting bar is vertical to the horizontal plane, the included angle between the central line of the inclined hole and the horizontal plane is 20-60 degrees.

The two side surfaces of the silencing sheet between the side plates are rhomboid, the upper surface and the lower surface of the silencing sheet are rectangular inclined surfaces, and the two ends of the silencing sheet are square end surfaces.

The door core is formed by connecting the side surfaces of a plurality of supporting strips, and the directions of inclined holes of two adjacent supporting strips are consistent.

The door core is formed by connecting the side surfaces of a plurality of supporting strips, and the included angle of the central lines of the inclined holes of two adjacent supporting strips is more than or equal to 40 degrees.

When the panel of the soundproof door is vertical to the horizontal plane, the upper end of the inclined hole inclines towards the rear side, and the height of the lower edge line at the rear end of the inclined hole is more than or equal to that of the upper edge line at the front end of the inclined hole; the height of the upper edge line at the rear end of the inclined hole is less than or equal to the height of the lower edge line at the front end of the inclined hole.

The cross section of the inclined hole is circular.

The cross section of the inclined hole is in a strip shape, the lengths of the strip shapes are different, and the strip shapes are randomly distributed on the door core.

The utility model has the advantages that: the strong point of door core to door panel is many and even, makes the intensity of door increase by a wide margin, and each strong point homoenergetic absorbs and disturbs the vibration wave of sound, and the inclined plane of each inclined hole can be dispersed the sound wave and turn back and the energy reduces suddenly to the effect of shielding sound has been reached. In addition, the main part of the silencing sheet has small volume, can be made of leftover materials, greatly reduces the cost of the product, and is expected to become a preferred device in places such as rooms, offices and the like.

Drawings

FIG. 1 is a front view of the first embodiment;

FIG. 2 is a left side view of the first embodiment;

FIG. 3 is a front view of the component support bar of the first embodiment;

FIG. 4 is a left side view of the component support bar of the first embodiment;

FIG. 5 is a front view of the component noise damping sheet of the first embodiment;

FIG. 6 is a left side view of the component sound-damping sheet of the first embodiment;

FIG. 7 is an assembled front view of the component door core of the first embodiment;

FIG. 8 is an operational schematic diagram of the component sound-damping sheet of the first embodiment;

FIG. 9 is an assembled front view of the component door core of the second embodiment;

FIG. 10 is a left side elevational view, in section A-A, of the component door core of the second embodiment;

FIG. 11 is a left side elevational view in section B-B of the component door core of the second embodiment;

FIG. 12 is a front view of the third embodiment;

FIG. 13 is a front view of the fourth embodiment;

FIG. 14 is a front view of the fifth embodiment;

fig. 15 is a front view of the sixth embodiment.

It can be seen in the figure that: soundproof door 1, frame 2, panel 3, door core 4, support bar 5, curb plate 6, noise damping piece 7, inclined hole 8, inclined plane 9, terminal surface 10, normal 11.

Detailed Description

The first embodiment: fig. 1 and 2 show a door, i.e., a soundproof door 1 capable of blocking sound transmission. As can be seen, the soundproof door includes a frame 2, a panel 3, and a door core 4, wherein the door core is installed in the frame, and the panel is fixed to the front and rear sides of the frame. The sound insulation door is characterized in that: the door core 4 is provided with a plurality of supporting strips 5, each supporting strip is an elongated lath, and a plurality of inclined holes 8 are formed in the lath.

The cross-sectional shape of the angled holes can be varied and are illustrated in the figures as squares, including rectangles. When the plane of the supporting strip is vertical to the horizontal plane, the included angle between the central line of the inclined hole and the horizontal plane is less than 80 degrees, and 20-60 degrees is recommended.

Fig. 3 and 4 illustrate a structure of the supporting bar. As can be seen in the figure, two sides of the supporting strip 5 are respectively provided with a side plate 6, a plurality of silencing plates 7 are arranged between the two side plates, and inclined holes 8 are formed in the spaces between the two side plates and the adjacent silencing plates.

Fig. 5 and 6 illustrate an acoustic elimination sheet having a relatively simple structure. As can be seen in the figure, the two side surfaces of the silencing sheet are rhomboids, the rhomboids are also parallelogram, the upper and lower sidelines are parallel, and the front and rear sidelines are parallel. The upper and lower surfaces of the silencing sheet are rectangular inclined surfaces, and the two ends of the silencing sheet are square end surfaces. The silencing sheet can be made of various materials, and leftover materials of composite boards such as shaving boards and the like are recommended, so that the silencing sheet is easy to manufacture, low in cost and good in silencing effect.

The silencing sheet is mounted in a plurality of ways. The figures are exemplified by: when a plane or a ridge line of the side plate is vertical to the horizontal plane, namely when the sound insulation door is used, under the condition that a panel of the door is vertical to the horizontal plane, the included angle between the inclined plane 9 of the sound insulation sheet and the horizontal plane is equal to the included angle between the central line of the inclined hole and the horizontal plane. I.e. less than 80 deg., and may be selected between 20-60 deg..

As can be seen from the combination of fig. 7, the door core is formed by connecting the side surfaces of a plurality of supporting bars to fill the space between the two side panels, and the inclined holes of two adjacent supporting bars are in the same direction. However, the positions of the inclined holes may be aligned or may be offset from each other. The installation method is as follows: the door core is assembled in the frame, the frame can be filled with the door core, and the front side face and the rear side face of the door core are flush with the frame. Thus, the panels on both sides can be attached to the whole frame and the plane of the door core, and a very outstanding sound insulation effect can be obtained. Through multi-point measurement, sound with volume of 60dB is played in a room with 50 square meters, and people standing outdoors cannot hear indoor sound after the door is closed. The best sound insulation index can reach 80dB, namely, the basic shielding effect is achieved on 80dB sound.

Figure 8 provides a brief analysis of the silencing principle of this door core. According to the law of acoustic reflection, the angle between the direction line of sound wave propagation and the normal of the receiving medium plane is equal to the angle between the normal and the direction line of sound wave reflection, i.e. the angle of incidence α = the angle of reflection β. For the sound wave contacted with the inner side of the door, as shown by sound propagation paths alpha and beta in the figure, the sound transmitted in the horizontal direction accounts for the most part, and the flat sound is reflected out and still blocked and absorbed by the opposite inclined surface, and the energy of the reflected sound wave is quickly attenuated, so that the part which can penetrate out of the inclined hole is small and can be ignored. As for sound waves in other directions, the sound wave reflection path alpha in the figure ^， β ^， It is shown that sound waves that are not parallel to the inclined plane do not pass directly through such a door core. While the sound waves parallel to the inclined plane have a high or low position of their sound source, which is clearly very rare. Although the motion of the sound wave is relatively complex, the analysis can still reflect the motion state and law of the mainstream sound wave.

In addition, in some existing doors, materials such as expanded perlite, rock wool, sponge and the like are used for filling, and the sound insulation effect is good. However, these materials are expensive, have low support strength, and have high requirements for panel strength, and thus are not comparable to the structure of this example.

The second embodiment: the first embodiment is improved. As shown in fig. 9, 10 and 11, the door core 4 is formed by connecting a plurality of support bars 5 at the side, and the inclined direction of the inclined holes 8 of two adjacent support bars, namely the intersection angle of the central lines of the two inclined holes is more than 40 degrees and can reach 90 degrees at most. The inclined angle of the inclined holes of two adjacent supporting bars can be different. If the angle of inclination is the same, the two inclined holes are in opposite directions. Fig. 9 is a view showing an example of a vertical state of the soundproof door, in which sectional lines a-a and B-B are respectively defined at center lines of two adjacent door core pieces, and an inclined hole of one door core piece is inclined in a direction of an upper end of the inclined hole to a left side as shown in a section a-a of fig. 10. The inclined hole of the other support bar is oriented as shown in the section B-B of fig. 11, and the upper end of the inclined hole is inclined to the right side. The angle between the central line of the inclined hole and the horizontal line can be preferably 45 degrees, and the angle between the central lines of the inclined holes of the adjacent supporting bars is 90 degrees. In addition, the following parameters are preferably selected for each inclined hole: when the panel of the soundproof door is vertical to the horizontal plane, namely, in the use state of the door, the upper end of the inclined hole is inclined towards the rear side, and the height of the lower edge line at the rear end of the inclined hole is more than or equal to that of the upper edge line at the front side of the inclined hole; the height of the upper edge line at the rear side of the inclined hole is less than or equal to the height of the lower edge line at the front side of the inclined hole. This structure is similar to a blind, and cannot pass through the inclined hole of the door core along a straight line in the horizontal direction.

The multipoint test proves that: the door core has a structure with strong acoustic characteristics, can better interfere the vibration of sound waves, and dissipates the energy of sound from more angles and directions. A sound with a volume of 70dB is played in a room of 50 square meters, and a person standing outdoors cannot hear the sound indoors after the door is closed. Wherein the soundproof door can still achieve the effect of basically shielding the sound in a plurality of machining rooms with the noise reaching 90 dB.

Third embodiment: as shown in fig. 12, the support bars 5 are installed in the frame 2 in a lateral direction, and have a good soundproof effect after the panel 3 is assembled. This example shows that there are many possible ways to mount the support bar, and all should be considered as equivalent technical solutions.

The fourth embodiment: as shown in fig. 13, the support bar 5 is attached to only a part of the inside of the frame 2, and can also play a certain role in sound insulation. Especially in the case of special door structures or in combination with other materials, the support strip often does not fill the entire space inside the frame, but its sound-insulating effect is still considerable.

The fifth embodiment: FIG. 14 shows only one side of the door core, reflecting only the shape of the opening at one end of the angled hole. As can be seen from the figure, the cross section of the inclined hole 8 of the support bar 5 is a circular hole, and the structure has good acoustic effect and mechanical effect, better interference performance to sound waves and higher strength, and is particularly suitable for being made of granular materials such as sawdust, wood shavings and the like.

Sixth embodiment: FIG. 15 shows only one side of the door core, reflecting only the shape of the opening at one end of the angled hole. It can be seen that the cross section of the inclined holes 8 of the support bar 5 is strip-shaped, the length of the strip-shaped holes is different, and the arrangement is irregular, and the function principle is the same as that of the previous embodiment. The distribution position has lower precision requirement, so the manufacture is more convenient. The long hole structure can cut off the deformation of the material besides saving the material, and is suitable for using the material with good noise elimination performance and easy deformation.

It should be noted that: the door core used by the sound insulation door can be sold separately as a special product and then assembled into a complete door. Therefore, the door core product should also fall within the protection scope of the present claims.

Claims

1. The utility model provides a soundproof door, includes frame (2), panel (3) and door core (4), its characterized in that: door core (4) have many lath support bar (5), and it has a plurality of inclined holes (8) to open on support bar (5), support bar (5) both sides respectively have a curb plate (6), are equipped with multi-disc noise damping piece (7) between two curb plates (6), and the space between two adjacent noise damping piece (7) forms inclined hole (8).

2. The soundproof door of claim 1, wherein: the cross section of the inclined hole (8) is square, and when the plane of the supporting bar (5) is vertical to the horizontal plane, the included angle between the central line of the inclined hole (8) and the horizontal plane is less than 80 degrees.

3. The soundproof door of claim 2, wherein: the included angle between the central line of the inclined hole (8) and the horizontal plane is 20-60 degrees.

4. The soundproof door of claim 1, wherein: the two side faces of the silencing sheet (7) between the side plates (6) are rhomboidal, the upper and lower surfaces of the silencing sheet are rectangular inclined planes (9), and the two ends of the silencing sheet are square end faces (10).

5. The soundproof door of claim 1, wherein: the door core (4) is formed by connecting the side surfaces of a plurality of supporting strips (5), and the directions of the inclined holes (8) of two adjacent supporting strips (5) are consistent.

6. The soundproof door of claim 1, wherein: the door core (4) is formed by connecting the side surfaces of a plurality of supporting strips (5), and the included angle of the central lines of the inclined holes (8) of two adjacent supporting strips (5) is more than or equal to 40 degrees.

7. The soundproof door of claim 1, wherein: when the panel (3) of the soundproof door (1) is vertical to the horizontal plane, the upper end of the inclined hole (8) inclines towards the rear side, and the height of the lower edge line at the rear end of the inclined hole is more than or equal to that of the upper edge line at the front end of the inclined hole; the upper end of the inclined hole (8) inclines towards the front side, and the height of the upper edge line at the rear end of the inclined hole is less than or equal to that of the lower edge line at the front end of the inclined hole.

8. The soundproof door of claim 1, wherein: the cross section of the inclined hole (8) is circular.

9. The soundproof door of claim 1, wherein: the cross section of the inclined hole (8) is strip-shaped, the lengths of the strip-shaped holes are different, and the strip-shaped holes are randomly distributed on the door core.