CN214220038U - Sound insulation vibration reduction structure - Google Patents
Sound insulation vibration reduction structure Download PDFInfo
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- CN214220038U CN214220038U CN202022744067.XU CN202022744067U CN214220038U CN 214220038 U CN214220038 U CN 214220038U CN 202022744067 U CN202022744067 U CN 202022744067U CN 214220038 U CN214220038 U CN 214220038U
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Abstract
The utility model belongs to the technical field of the noise control, a sound insulation damping structure is disclosed, this sound insulation damping structure includes the sound insulation unit, the sound insulation unit includes the sound insulation board, first quality piece and a plurality of second quality piece, the sound insulation board includes the sound insulation board body and connects in sound insulation board body frame all around, sound insulation board body and frame form the chamber that holds that is used for acceping the noise, the sound insulation board body has elasticity, first quality piece and a plurality of second quality piece are all connected in the sound insulation board body, a plurality of second quality piece intervals set up and the equipartition is around first quality piece. The utility model provides a working band can be widened to sound insulation damping structure, can realize the interior sound insulation damping of wide band range, can reduce initial operating frequency, simple structure, and application scope is wide.
Description
Technical Field
The utility model relates to a noise control technical field especially relates to a sound insulation damping structure.
Background
Structures such as household appliances, industrial pipelines, building walls, transportation vehicles and the like generate vibration and radiate noise under the excitation of a vibration source or a sound source, which is called the problem of structural vibration sound. The common vibration source or sound source is a power device, pressure pulsation, impact excitation and the like, the most widely used sound insulation method at present is vibration and noise reduction treatment on a vibration and sound transmission path, and the method mainly comprises two modes, namely directly attaching a damping material or a power vibration absorber on a vibration and sound structure, but the mode cannot reduce noise of air noise which escapes from the vibration and sound structure and is transmitted in the air; another is to place a sound insulating or absorbing barrier between the source and the recipient to impede the transmission of airborne noise, but in such a way as to not reduce the structural vibrations transmitted by the vibrating acoustic structure.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a sound insulation damping structure to solve current sound insulation damping structure and can not prevent the sound escape that shakes, operating frequency is narrow, initial operating frequency is big and can not reduce the problem of noise vibration.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a sound insulation vibration damping structure, its includes the sound insulation unit, the sound insulation unit includes sound insulation board, first quality piece and a plurality of second quality piece, the sound insulation board include the sound insulation board body with connect in sound insulation board body frame all around, the sound insulation board body with the frame forms the chamber that holds that is used for acceping the noise, the sound insulation board body has elasticity, first quality piece and a plurality of the second quality piece all connect in sound insulation board body, it is a plurality of second quality piece interval sets up and the equipartition in first quality piece is around.
Preferably, the sum of the contact areas of the plurality of second masses and the sound insulation plate body is smaller than the contact area of the first mass and the sound insulation plate body.
Preferably, the second mass block comprises a first end face and a second end face opposite to the first end face and arranged at an interval, the second end face is connected to the sound insulation plate body, and the contact area of the sound insulation plate body and the second end face is smaller than the area of the first end face.
Preferably, the first mass block is provided in plurality.
Preferably, at least two of the first masses have different shapes, or the first masses have the same shape.
Preferably, each second mass block is provided with a plurality of third mass blocks, and the plurality of third mass blocks are fixedly connected with the second mass block.
Preferably, the first mass block and the second mass block are detachably connected to the sound insulation plate body.
Preferably, the first mass block and the second mass block may be integrally formed with the sound insulation plate body.
Preferably, the frame is provided with a connecting piece for connecting with the sound insulation device.
Preferably, the sound insulation units are arranged in a plurality, and the sound insulation units are connected with each other and arranged in an array.
The utility model has the advantages that:
this practical novel aim at provides a sound insulation damping structure, this sound insulation damping structure includes the sound insulation unit, the sound insulation unit includes the sound insulation board, first quality piece and a plurality of second quality piece, the sound insulation board includes the sound insulation board body and connects in sound insulation board body frame all around, sound insulation board body and frame form the chamber that holds that is used for acceping the noise, the sound insulation board body has elasticity, first quality piece and a plurality of second quality piece all connect in the sound insulation board body, a plurality of second quality piece intervals set up and the equipartition is around first quality piece. By arranging the sound insulation board body and the frame connected to the periphery of the sound insulation board body, the sound insulation board body and the frame can form a containing cavity for containing noise, the noise can be contained in the containing cavity, and it can be understood that a sound insulation object is sealed in the containing cavity to seal the noise in the containing cavity and prevent the noise from being spread; the first mass block and the second mass block are connected to the sound insulation plate body and used for providing mass, the sound insulation plate body has elasticity, and noise contained in the containing cavity is absorbed and dissipated under the action of the sound insulation plate body, the first mass block and the second mass block so as to reduce noise vibration; meanwhile, the first mass block can be used for reducing the initial working frequency, the second mass blocks are arranged at intervals and uniformly around the first mass block, the second mass blocks can be used for providing rotational inertia so as to widen the high-frequency working frequency band, the initial working frequency can be further reduced, the working frequency band of the sound insulation vibration reduction structure is widened, the structure is simple, and the application range is wide.
Drawings
Fig. 1 is a structural diagram of a sound insulation unit of a sound insulation and vibration reduction structure provided by an embodiment of the present invention;
fig. 2 is a structural diagram of a sound insulation unit of a sound insulation and vibration reduction structure provided by an embodiment of the present invention, the sound insulation unit being provided with a plurality of first mass blocks;
fig. 3 is a structural diagram of a sound insulation unit of a sound insulation and vibration reduction structure provided by an embodiment of the present invention, in which a plurality of second mass blocks are provided;
fig. 4 is a front view of a sound insulation and vibration reduction structure provided by an embodiment of the present invention, in which a first plurality of first mass blocks have different structures;
fig. 5 is a front view of a sound insulation and vibration reduction structure provided by an embodiment of the present invention, in which a second plurality of first mass blocks have different structures;
fig. 6 is a front view of a sound insulation and vibration reduction structure according to an embodiment of the present invention, in which a plurality of sound insulation units are provided.
In the figure:
1. a sound insulation board body;
2. a frame;
3. a first mass block;
4. a second mass block;
5. a third mass.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
This practical utility is novel to provide a sound insulation damping structure, as shown in fig. 1, this sound insulation damping structure includes the sound insulation unit, the sound insulation unit includes the sound insulation board, first quality piece 3 and a plurality of second quality piece 4, the sound insulation board includes sound insulation board body 1 and connects in sound insulation board body 1 frame 2 all around, sound insulation board body 1 and frame 2 form the chamber that holds that is used for acceping the noise, sound insulation board body 1 has elasticity, first quality piece 3 and a plurality of second quality piece 4 all connect in sound insulation board body 1, a plurality of second quality piece 4 separate the setting and equipartition around first quality piece 3. By arranging the sound insulation board body 1 and the frame 2 connected to the periphery of the sound insulation board body 1, the sound insulation board body 1 and the frame 2 can form a containing cavity for containing noise, the noise can be contained in the containing cavity, and it can be understood that a sound-insulated object is sealed in the containing cavity to seal the noise in the containing cavity and prevent the noise from being transmitted; the first mass block 3 and the second mass block 4 are connected to the sound insulation plate body 1 and used for providing mass, the sound insulation plate body 1 has elasticity, and noise contained in the containing cavity is absorbed and dissipated under the action of the sound insulation plate body 1, the first mass block 3 and the second mass block 4 so as to reduce noise vibration; meanwhile, the first mass block 3 can be used for reducing the initial working frequency, the second mass blocks 4 are uniformly distributed around the first mass block 3 at intervals, and the second mass blocks 4 can be used for providing rotational inertia so as to widen the high-frequency working frequency band and further reduce the initial working frequency, so that the working frequency band of the sound insulation vibration reduction structure is widened, the structure is simple, and the application range is wide.
Alternatively, as shown in fig. 1, the sum of the contact areas of the plurality of second masses 4 and the sound insulating plate body 1 is smaller than the contact area of the first mass 3 and the sound insulating plate body 1. The first mass block 3 is used for providing mass, the second mass block 4 is used for providing mass and rotational inertia, the sound insulation plate body 1 has elasticity, and the sound insulation plate body 1, the first mass block 3 and the second mass block 4 act together by setting the sum of the contact areas of the plurality of second mass blocks 4 and the sound insulation plate body 1 to be smaller than the contact area of the first mass block 3 and the sound insulation plate body 1, so that the low-frequency resonance mode of vibration vertical to the surface of a vibration-isolated device can be effectively reduced, and the vibration is effectively reduced; meanwhile, the initial working frequency can be reduced, the high-frequency working frequency band is widened, and the working frequency band of the sound insulation vibration reduction structure is widened.
Optionally, as shown in fig. 1, the second mass block 4 includes a first end surface and a second end surface opposite to the first end surface and spaced apart from the first end surface, the second end surface is connected to the sound insulation plate body 1, and a contact area between the sound insulation plate body 1 and the second end surface is smaller than an area of the first end surface. When there is noise vibration along the vertical direction on by the sound arrester surface, through setting up the area that the area of contact of sound insulating board body 1 and second terminal surface is less than first terminal surface, can increase the inertia of connecting in the second quality piece 4 of sound insulating board body 1 to improve the high frequency operating band of sound insulation damping structure, also the energy of effective absorption noise simultaneously, and then the energy of through sound insulating board body 1 dissipation noise, thereby realize the sound insulation damping. Under the condition that the mass of the second mass block 4 is not changed, the smaller the contact area between the sound insulation plate body 1 and the second end surface is, the larger the rotational inertia of the second mass block 4 is, the lower the resonance frequency of the first mass block 3 is, and the wider the working frequency band of the sound insulation vibration reduction structure is. In other embodiments, as shown in fig. 3, eight second mass blocks 4 may be disposed around the first mass block 3, the eight second mass blocks 4 are spaced and all disposed around the first mass block 3, and by disposing the eight second mass blocks 4, the eight second mass blocks 4 are used for providing mass and moment of inertia, which may widen the operating band of high frequency, and may further reduce the initial operating frequency, thereby widening the operating band of the sound insulation and vibration reduction structure, wherein the sum of the contact areas of the eight second mass blocks 4 and the sound insulation plate body 1 is smaller than the contact area of the first mass block 3 and the sound insulation plate body 1.
Alternatively, as shown in fig. 2, the first mass block 3 is provided in plurality. First quality piece 3 is used for providing the quality, and is unchangeable at first quality piece 3's quality, and under the unchangeable condition of area of contact with sound insulation board body 1, through setting first quality piece 3 to a plurality ofly, for setting first quality piece 3 one, can reduce initial operating frequency, can realize reducing initial operating frequency under the condition of the quality that does not increase first quality piece 3, thereby reduce the quality of sound insulation unit, with the effect that realizes that sound insulation damping structure light in weight, the operating frequency bandwidth is wide, initial operating frequency's numerical value is little. Preferably, when the sound insulation plate body 1 is provided with four first mass blocks 3, the four first mass blocks 3 are arranged at intervals, the interval between two adjacent first mass blocks 3 is 0.1-10 mm, and the working frequency band of the sound insulation vibration reduction structure is larger than that of the first mass blocks 3 arranged into one block; meanwhile, the four second mass blocks 4 are uniformly distributed at intervals around the four first mass blocks 3, so that the high-frequency working frequency band can be widened, the initial working frequency can be further reduced, the working frequency band of the sound insulation vibration reduction structure can be widened, and noise vibration can be inhibited.
Alternatively, as shown in fig. 2, 4 and 5, at least two of the plurality of first masses 3 are different in shape, or the plurality of first masses 3 are all the same in shape. By arranging at least two of the first mass blocks 3 to have different shapes or arranging a plurality of first mass blocks 3 to have the same shape, the main working frequency range of the sound insulation unit can be changed, so that a user can select the corresponding sound insulation unit according to the noise frequency distribution characteristics of the sound insulation device; meanwhile, under the condition that the mass of the first mass block 3 and the contact area of the first mass block and the sound insulation plate body 1 are not changed, the number of the first mass blocks 3 is multiple, and compared with the case that the number of the first mass blocks 3 is one, the initial working frequency can be further reduced, and the peak value of the resonance peak of the sound insulation device is reduced. It will be understood that the shape and number of the first masses 3 can be determined on the basis of the noise frequency distribution characteristic of the actual sound-insulated device, and the shape and number of the second masses 4 can also be determined on the basis of the noise frequency distribution characteristic of the actual sound-insulated device.
Optionally, as shown in fig. 1 and fig. 2, each second mass block 4 is provided with a plurality of third mass blocks 5, and each of the plurality of third mass blocks 5 is fixedly connected with the second mass block 4. A plurality of third mass blocks 5 are arranged on each second mass block 4, and each third mass block 5 is fixedly connected to the second mass block 4, so that the rotational inertia of the second mass block 4 is increased, the high-frequency working frequency band is further widened, the peak value of a resonance peak is reduced, the initial working frequency is reduced, and the working frequency band of the sound insulation vibration reduction structure is further widened; meanwhile, the third mass block 5 can also be used for absorbing the energy of noise, and then the energy of the noise is dissipated through the sound insulation plate body 1, so that sound insulation and vibration reduction are realized. It will be appreciated that the number of third masses 5 can be determined according to the noise frequency distribution characteristics of the actual sound-insulated device. Preferably, two third mass blocks 5 are arranged on each second mass block 4 at positions close to the two ends, each third mass block 5 is composed of a first part and a second part which are connected with each other, the second part is fixedly connected with the second mass block 4, and the contact area of the second part and the second mass block 4 is smaller than the cross-sectional area of the first part, so that the rotational inertia of the second mass block 4 is increased, the working frequency band of high frequency is widened, the peak value of a resonance peak is reduced, the initial working frequency is reduced, noise energy is absorbed, and the working frequency band of the sound insulation vibration reduction structure is further enlarged. In other embodiments, the second mass 4 and the third mass 5 may also be connected by an elastic member to increase the moment of inertia of the second mass 4.
Optionally, the first mass block 3 and the second mass block 4 are detachably connected to the sound insulation plate body 1. Through setting up first quality piece 3 and the equal detachable of second quality piece 4 and connecting in sound insulation board body 1, can be convenient for adjust the quantity and the mode of arranging of first quality piece 3, second quality piece 4 and third quality piece 5.
Alternatively, the first mass block 3 and the second mass block 4 may be integrally formed with the sound insulating panel body 1. Through setting up first quality piece 3 and second quality piece 4 and acoustic baffle body 1 integrated into one piece, the processing of can being convenient for saves the cost of labor.
Optionally, the frame 2 is provided with a connector for connecting with a sound-insulated device. Through setting up the connecting piece, can be with sound insulation damping structure with by sound-proof device fixed connection to effectively seal the opening that holds the chamber, accept the noise in holding the intracavity, thereby guarantee effectively to keep apart by the noise of sound-proof device, and absorb and dissipate the energy of noise. Specifically, the sound insulation unit can be fixed to the sound-insulated device by adopting an adhesive, a screw joint or other connection modes. In other embodiments, a support column can also be arranged on the sound insulation plate body 1 in a protruding manner, and the support column is provided with a jack which can be conveniently plugged with a sound insulation device, so that the sound insulation vibration reduction structure can be conveniently fixed on the sound insulation device. In other implementations, hooks may be provided on the frame 2 to facilitate assembly or disassembly of the sound-insulating and vibration-damping structure to or from the device to be insulated.
Alternatively, as shown in fig. 6, the sound insulation unit is provided in plurality, and the plurality of sound insulation units are connected with each other and arranged in an array. Through setting up a plurality of sound insulation units, a plurality of sound insulation unit interconnect and array are arranged, and the different quantity of confirming the sound insulation unit by the surface area of sound arrester of user's root of can being convenient for. In other embodiments, the first mass block 3, the second mass block 4 and the third mass block 5 can be arranged on both end surfaces of the sound insulation plate body 1, so that the working frequency band of the sound insulation and vibration reduction structure can be further widened.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a sound insulation damping structure, its characterized in that, includes the sound insulation unit, the sound insulation unit includes sound insulation board, first quality piece (3) and a plurality of second quality piece (4), the sound insulation board include sound insulation board body (1) and connect in sound insulation board body (1) frame (2) all around, sound insulation board body (1) with frame (2) form the chamber that holds that is used for acceping the noise, sound insulation board body (1) have elasticity, first quality piece (3) and a plurality of second quality piece (4) all connect in sound insulation board body (1), a plurality of second quality piece (4) interval sets up and the equipartition in around first quality piece (3).
2. The sound-insulating and vibration-damping structure according to claim 1, characterized in that the sum of the contact areas of the second masses (4) with the panel body (1) is smaller than the contact area of the first mass (3) with the panel body (1).
3. The sound insulation and vibration reduction structure according to claim 1, wherein the second mass (4) comprises a first end surface and a second end surface which is opposite to the first end surface and is arranged at a distance, the second end surface is connected to the sound insulation plate body (1), and the contact area of the sound insulation plate body (1) and the second end surface is smaller than the area of the first end surface.
4. The sound-insulating and vibration-damping structure according to claim 1, characterized in that said first mass (3) is provided in plurality.
5. The sound-insulating and vibration-damping structure according to claim 4, characterized in that at least two of said first masses (3) differ in shape or in that the first masses (3) are all identical in shape.
6. The sound-insulating and vibration-damping structure according to claim 1, characterized in that a plurality of third masses (5) are provided on each second mass (4), a plurality of third masses (5) being fixedly connected to the second masses (4).
7. The sound-insulating and vibration-damping structure according to claim 1, characterized in that said first mass (3) and said second mass (4) are both removably connected to said panel body (1).
8. The sound-insulating and vibration-damping structure according to claim 1, characterized in that both the first mass (3) and the second mass (4) can be integrally formed with the sound-insulating panel body (1).
9. The sound-insulating and vibration-damping structure according to claim 1, characterized in that the frame (2) is provided with connecting pieces for connection to a device to be sound-insulated.
10. The sound-insulation vibration-reduction structure according to claim 1, wherein a plurality of sound-insulation units are provided, and the plurality of sound-insulation units are connected with each other and arranged in an array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022744067.XU CN214220038U (en) | 2020-11-24 | 2020-11-24 | Sound insulation vibration reduction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022744067.XU CN214220038U (en) | 2020-11-24 | 2020-11-24 | Sound insulation vibration reduction structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214220038U true CN214220038U (en) | 2021-09-17 |
Family
ID=77698726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022744067.XU Active CN214220038U (en) | 2020-11-24 | 2020-11-24 | Sound insulation vibration reduction structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214220038U (en) |
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2020
- 2020-11-24 CN CN202022744067.XU patent/CN214220038U/en active Active
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