CN213472433U - Shock-absorbing silencing sheet - Google Patents
Shock-absorbing silencing sheet Download PDFInfo
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- CN213472433U CN213472433U CN202021376722.4U CN202021376722U CN213472433U CN 213472433 U CN213472433 U CN 213472433U CN 202021376722 U CN202021376722 U CN 202021376722U CN 213472433 U CN213472433 U CN 213472433U
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Abstract
The utility model discloses a shock-absorbing silencing sheet, which comprises a flame-retardant sponge layer, a first rubber layer, a metal layer, a second rubber layer and a pressure-sensitive adhesive layer from top to bottom in sequence; a sound-absorbing cavity is formed in the metal layer, a damping partition plate is embedded in the upper half part of the sound-absorbing cavity, a plurality of through holes are formed in the damping partition plate, and the outer contour of the damping partition plate is matched with the inner contour of the upper half part of the sound-absorbing cavity; the sound absorption cavity is characterized in that the lower half part of the sound absorption cavity is filled with a sound absorption body material, and the outer contour of the sound absorption body material is matched with the inner contour of the lower half part of the sound absorption cavity. The utility model discloses a set up in the metal level and inhale the sound and hold the chamber, inlay the damping baffle who sets up the through-hole at the first half that inhales the sound appearance chamber, carry out the separation decay to the noise, pack the acoustic absorber material in the latter half that inhales the sound appearance chamber, absorb noise after the separation decay repeatedly, constantly convert the noise energy and subduct, finally reach the effect of syllable-dividing amortization.
Description
Technical Field
The utility model relates to the technical field of auto-parts, especially, relate to a shock attenuation amortization piece
Background
The braking noise is generated by the friction vibration between the friction plate and the brake disc. The intensity of the sound wave changes once from the friction lining to the steel backing, and the intensity of the sound wave changes once from the steel backing to the silencing sheet, so that the sound wave is blocked layer by layer, and the sound wave is prevented from resonating to reduce the noise.
The damping and silencing sheet is a viscoelastic material adhered to the inner surface of the vehicle body, is adhered to the steel plate wall of the vehicle body, and mainly plays a role in reducing noise and vibration, namely a damping role; the existing damping silencing sheet has poor sound insulation effect.
In order to solve the sound insulation problem of the shock absorption and noise reduction sheet, related research is carried out in the prior art and some research results are disclosed, for example, China with publication number CN206953722U specially facilitates 2018, 2 months and 2 days, and discloses the shock absorption and noise reduction sheet which is sequentially provided with a flame-retardant sponge layer, a foaming rubber layer, an encryption sponge layer, a sound absorption sponge layer and a pressure-sensitive adhesive layer from top to bottom; and a sound absorption groove is formed in the center of the encryption sponge layer. This patent is through inhaling the sound recess reinforcing sound effect of inhaling that sets up in the sponge layer is encrypted in the sponge layer cooperation of inhaling the sound sponge layer. The chinese special benefit of publication No. CN208236968U in 2018, 12 months and 14 days discloses a shock-absorbing and noise-damping sheet, including lamellar body, first stiff end and second stiff end, the central authorities at lamellar body top are equipped with the fixed slot, and the internally mounted of fixed slot has first stiff end, and the both ends of lamellar body bottom evenly install the second stiff end, the central authorities of lamellar body are equipped with the fixing base, and the both sides of fixing base are equipped with first shock attenuation end and second shock attenuation end, the spherical surface board is all installed through the fixture block to the first shock attenuation end in fixing base both sides and one side of second shock attenuation end, the outside of first shock attenuation end, fixing base and second shock attenuation end all is equipped with the paint film. This patent carries out the noise through inhaling the sound sponge layer and adsorbs, reduces vibrations through encrypting the sponge layer. The Chinese patent application publication No. CN206615168U, 2017, 11, 7 discloses a shock-absorbing and noise-reducing sheet, which sequentially comprises a metal layer, an adhesive layer, a melamine sponge layer and a pressure-sensitive adhesive layer from top to bottom; a plurality of reinforcing ribs are uniformly distributed on the top surface of the metal layer; the bonding layer adopts flame-retardant glue; the damping and silencing sheet has good sound insulation, compression strength and flame retardant effect.
Above-mentioned patent all relies on setting up to inhale the sound sponge layer and gives sound insulation, and its silencing effect that finally reaches relies on the sound effect of inhaling the sound sponge, consequently, it is necessary to design a shock attenuation amortization piece, can be from structural reaching sound insulation silencing effect, reduces the reliance to inhaling the sound sponge.
Disclosure of Invention
For overcoming the not enough of above-mentioned prior art, the utility model provides a shock attenuation amortization piece inhales the sound through the setting and holds the chamber and pack the damping thing and carry out the separation and absorb the noise inhaling the sound and holding the chamber to reach noise cancelling effect.
The utility model discloses a realize through following technical scheme:
a shock-absorbing silencing sheet comprises a flame-retardant sponge layer, a first rubber layer, a metal layer, a second rubber layer and a pressure-sensitive adhesive layer from top to bottom in sequence; a sound-absorbing cavity is formed in the metal layer, a damping partition plate is embedded in the upper half part of the sound-absorbing cavity, a plurality of through holes are formed in the damping partition plate, and the outer contour of the damping partition plate is matched with the inner contour of the upper half part of the sound-absorbing cavity; the sound absorption cavity is characterized in that the lower half part of the sound absorption cavity is filled with a sound absorption body material, and the outer contour of the sound absorption body material is matched with the inner contour of the lower half part of the sound absorption cavity.
In the technical scheme, the flame-retardant sponge layer is arranged to play a flame-retardant role, the first rubber layer and the second rubber layer are arranged to play a damping effect, and the pressure-sensitive adhesive layer is arranged to play a role in facilitating installation of the damping and silencing sheet; through set up in the metal level and inhale the sound and hold the chamber, inlay the damping baffle who sets up the through-hole at the first half that inhales the sound chamber, carry out the separation decay to the noise, it packs the acoustic absorbent material to inhale the latter half that the sound chamber, noise after the separation decay is absorbed repeatedly, the noise gets into by the through-hole on the damping baffle and inhales the sound and holds the intracavity, receive the damping baffle separation decay and reach the latter half that inhales the sound chamber, receive the absorption of acoustic absorbent material, reach the bottom that inhales the sound chamber, reflect the acoustic absorbent material again by the bottom that inhales the sound chamber again, constantly change the noise energy and subdue, finally reach the effect of syllable.
As a further technical scheme, the sound absorber is made of glass wool. The cotton sound absorption of glass is effectual, can inhale the noise that the appearance chamber the latter half was inhaled to the entering repeatedly and absorb.
As a further technical scheme, the damping partition plates are multiple, the through holes formed in the multiple damping partition plates are in one-to-one correspondence, and the multiple damping partition plates are overlapped layer by layer and embedded in the upper half part of the sound-absorbing cavity. A plurality of damping baffles superpose layer by layer and inlay in the first half that inhales the sound and hold the chamber, can further strengthen the separation decay effect to the noise.
As a further technical scheme, the sound-absorbing cavity is recessed from the upper surface of the metal layer to the lower surface; the upper surface of the sound-absorbing cavity is superposed with the upper surface of the metal layer; a reflecting surface is formed between the lower surface of the sound-absorbing cavity and the lower surface of the metal layer. The residual noise after being absorbed by the sound absorber reaches the bottom of the sound absorption cavity, is reflected back to the sound absorber through the reflecting surface to absorb the noise again, and finally achieves the effects of sound insulation and sound attenuation through continuously converting and reducing the noise energy
As a further technical scheme, a plurality of elastic cavities are arranged in the middle of the second rubber layer, and the elastic cavities are uniformly distributed in the middle of the second rubber layer at intervals. The silencing effect is further improved by arranging the elastic cavity.
As a further technical scheme, the damping partition plate is in interference fit with the upper half part of the sound-absorbing cavity. Connect the damping baffle joint to inhale the first half portion that the sound holds the chamber, can make damping baffle and inhale the connection that the sound holds the chamber more firm through interference fit.
As a further technical scheme, a plurality of blocking ribs are formed in the sound-absorbing cavity, a plurality of grooves are formed in the outer contour of the sound-absorbing material, and the outer contours of the blocking ribs are respectively matched with the inner contours of the grooves. Through the cooperation that blocks muscle and recess for the sound absorber material is more firm with inhaling the connection that the sound holds the chamber.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model has the advantages that the flame-retardant sponge layer is arranged to play a flame-retardant role, the first rubber layer and the second rubber layer are arranged to play a damping effect, and the pressure-sensitive adhesive layer is arranged to play a role in facilitating the installation of the damping silencing piece; through set up in the metal level and inhale the sound and hold the chamber, inlay the damping baffle who sets up the through-hole at the first half that inhales the sound chamber, carry out the separation decay to the noise, it packs the acoustic absorbent material to inhale the latter half that the sound chamber, noise after the separation decay is absorbed repeatedly, the noise gets into by the through-hole on the damping baffle and inhales the sound and holds the intracavity, receive the damping baffle separation decay and reach the latter half that inhales the sound chamber, receive the absorption of acoustic absorbent material, reach the bottom that inhales the sound chamber, reflect the acoustic absorbent material again by the bottom that inhales the sound chamber again, constantly change the noise energy and subdue, finally reach the effect of syllable.
Drawings
FIG. 1 is a schematic structural view of a shock-absorbing noise-damping sheet according to an embodiment of the present invention;
fig. 2 is a schematic view of a damping spacer according to an embodiment of the present invention;
fig. 3 is a schematic view of a lower half of a sound absorbing chamber according to an embodiment of the present invention;
fig. 4 is an outline schematic view of a sound absorber material according to an embodiment of the present invention.
In the figure: 1. a flame retardant sponge layer; 2. a first rubber layer; 3. a metal layer; 4. a second rubber layer; 5. a pressure sensitive adhesive layer; 6. a sound absorption cavity; 601. a damping spacer; 6001. a through hole; 602. a sound absorber material; 7. a second barrier rib; 8. a first barrier rib; 9. a third barrier rib; 10. a first groove; 11. a second groove; 12. and a third groove.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but 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 therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; 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 according to specific situations by 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.
Example 1
The embodiment provides a damping and silencing sheet, which sequentially comprises a flame-retardant sponge layer 1, a first rubber layer 2, a metal layer 3, a second rubber layer 4 and a pressure-sensitive adhesive layer 5 from top to bottom; a sound-absorbing cavity 6 is formed in the metal layer 3, a damping partition plate 601 is embedded in the upper half part of the sound-absorbing cavity 6, a plurality of through holes 6001 are formed in the damping partition plate, and the outer contour of the damping partition plate 601 is matched with the inner contour of the upper half part of the sound-absorbing cavity 6; the lower half part of the sound absorption cavity 6 is filled with a sound absorption material 602, and the outer contour of the sound absorption material 602 is matched with the inner contour of the lower half part of the sound absorption cavity 6.
In the embodiment, the flame-retardant sponge layer 1 is arranged to play a flame-retardant role, the first rubber layer 2 and the second rubber layer 4 are arranged to play a shock absorption effect, and the pressure-sensitive adhesive layer 5 is arranged to play a role in facilitating installation of the shock absorption and noise reduction sheet; through set up in metal level 3 and inhale sound and hold chamber 6, inlay the damping baffle 6001 who sets up the through-hole at the first half that inhales sound chamber 6, carry out the separation decay to the noise, it fills acoustic absorbent material 602 in the latter half that holds chamber 6 to inhale the sound, noise after the separation decay is absorbed repeatedly, the noise is got into by through-hole 6001 on the damping baffle 601 and is inhaled in sound chamber 6, receive damping baffle 601 separation decay and reach the latter half that inhales sound chamber 6, receive the absorption of acoustic absorbent material 602, reach the bottom that inhales sound chamber 6, reflect acoustic absorbent material 602 again by the bottom that inhales sound chamber 6 again, constantly convert and subdue noise energy, finally reach syllable-dividing amortization's effect.
The acoustic absorber material 602 is glass wool. The cotton sound absorption of glass is effectual, can inhale the noise that holds 6 the latter half of sound chamber to the entering and absorb repeatedly.
The sound-absorbing cavity 6 is recessed from the upper surface of the metal layer 3 to the lower surface; the upper surface of the sound-absorbing cavity 6 is superposed with the upper surface of the metal layer 3; and a reflecting surface is formed between the lower surface of the sound-absorbing cavity 6 and the lower surface of the metal layer 3. The residual noise after being absorbed by the sound absorber material 602 reaches the bottom of the sound absorption cavity, is reflected back to the sound absorber material 602 by the reflecting surface to absorb the noise again, and finally achieves the effect of sound insulation and silencing by continuously converting and reducing the noise energy.
The middle part of the second rubber layer 4 is provided with a plurality of elastic cavities which are uniformly distributed in the middle part of the second rubber layer at intervals. The silencing effect is further improved by arranging the elastic cavity.
The damping partition 601 is in interference fit with the upper half of the sound-absorbing cavity 6. The damping partition plate 601 is clamped to the upper half part of the sound-absorbing cavity 6, and the damping partition plate 601 and the sound-absorbing cavity 6 can be connected more stably through interference fit.
Example 2
Different from embodiment 1, in this embodiment, there are a plurality of damping partition plates 601, the through holes 6001 formed on the plurality of damping partition plates 601 correspond to each other one by one, and the plurality of damping partition plates 601 are stacked layer by layer and embedded in the upper half of the sound-absorbing cavity 6. A plurality of damping baffle 6001 superposes and inlays at the upper half of inhaling sound appearance chamber 6 layer by layer, can further strengthen the separation decay effect to the noise.
Example 3
Different from the embodiment 1-2, in the embodiment, a plurality of blocking ribs including a first blocking rib 8, a second blocking rib 7 and a third blocking rib 9 are formed in the sound-absorbing cavity 6. The outer profile of the sound absorber 602 is formed with a plurality of grooves, including a first groove 10, a second groove 11, and a third groove 12. The outer contour of the first blocking rib 8 is matched with the inner contour of the first groove 10; the outer contour of the second blocking rib 7 is matched with the inner contour of the second groove 11; the outer contour of the third blocking rib 9 is adapted to the inner contour of the third groove 12. Through a plurality of block muscle and the cooperation respectively of a plurality of recess for the sound absorbent material 602 is more firm with inhaling the connection that holds the chamber 6 of inhaling sound.
In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; these modifications and substitutions do not depart from the essence of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A shock-absorbing silencing sheet is characterized by sequentially comprising a flame-retardant sponge layer, a first rubber layer, a metal layer, a second rubber layer and a pressure-sensitive adhesive layer from top to bottom; a sound-absorbing cavity is formed in the metal layer, a damping partition plate is embedded in the upper half part of the sound-absorbing cavity, a plurality of through holes are formed in the damping partition plate, and the outer contour of the damping partition plate is matched with the inner contour of the upper half part of the sound-absorbing cavity; the sound absorption cavity is characterized in that the lower half part of the sound absorption cavity is filled with a sound absorption body material, and the outer contour of the sound absorption body material is matched with the inner contour of the lower half part of the sound absorption cavity.
2. The vibration-damping and noise-damping sheet according to claim 1, wherein said sound-absorbing material is glass wool.
3. The shock-absorbing and noise-reducing sheet according to claim 1, wherein there are a plurality of damping partitions, through holes are formed in the damping partitions in a one-to-one correspondence, and the damping partitions are stacked and embedded in the upper half of the sound-absorbing cavity layer by layer.
4. The shock-absorbing noise-canceling sheet according to claim 1, wherein the sound-absorbing receiving cavity is recessed from an upper surface toward a lower surface of the metal layer; the upper surface of the sound-absorbing cavity is superposed with the upper surface of the metal layer; a reflecting surface is formed between the lower surface of the sound-absorbing cavity and the lower surface of the metal layer.
5. The shock-absorbing noise-reducing sheet according to claim 1, wherein a plurality of elastic cavities are formed in the middle of the second rubber layer, and the elastic cavities are uniformly spaced in the middle of the second rubber layer.
6. The shock absorbing and noise deadening sheet as set forth in claim 1, wherein said damping spacer is in interference fit with an upper half of said sound absorbing receiving cavity.
7. The shock-absorbing and noise-reducing sheet as claimed in claim 1, wherein a plurality of blocking ribs are formed in the sound-absorbing cavity, a plurality of grooves are formed on an outer contour of the sound-absorbing material, and outer contours of the blocking ribs are respectively matched with inner contours of the grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021376722.4U CN213472433U (en) | 2020-07-14 | 2020-07-14 | Shock-absorbing silencing sheet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021376722.4U CN213472433U (en) | 2020-07-14 | 2020-07-14 | Shock-absorbing silencing sheet |
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| CN213472433U true CN213472433U (en) | 2021-06-18 |
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| CN202021376722.4U Active CN213472433U (en) | 2020-07-14 | 2020-07-14 | Shock-absorbing silencing sheet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114789589A (en) * | 2022-02-19 | 2022-07-26 | 中国船舶重工集团公司第七一五研究所 | Magnetic underwater sound absorption material and preparation method and application thereof |
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2020
- 2020-07-14 CN CN202021376722.4U patent/CN213472433U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114789589A (en) * | 2022-02-19 | 2022-07-26 | 中国船舶重工集团公司第七一五研究所 | Magnetic underwater sound absorption material and preparation method and application thereof |
| CN114789589B (en) * | 2022-02-19 | 2023-08-25 | 中国船舶重工集团公司第七一五研究所 | Magnetic underwater sound absorption material and preparation method and application thereof |
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