CN107948850B - Anti-resonance metal loudspeaker box - Google Patents
Anti-resonance metal loudspeaker box Download PDFInfo
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- CN107948850B CN107948850B CN201610892559.9A CN201610892559A CN107948850B CN 107948850 B CN107948850 B CN 107948850B CN 201610892559 A CN201610892559 A CN 201610892559A CN 107948850 B CN107948850 B CN 107948850B
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- plastic part
- wall
- metal
- plastic
- metal shell
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 80
- 239000002184 metal Substances 0.000 title claims abstract description 80
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 26
- 239000007769 metal material Substances 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 15
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 230000001788 irregular Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 239000004411 aluminium Substances 0.000 abstract description 2
- 230000005236 sound signal Effects 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
Abstract
The invention provides an anti-resonance metal loudspeaker box, which comprises: metal casing and plastic part, metal casing is the inside hollow rampart structure of both sides opening, the plastic part is used for placing the internal component of audio amplifier, metal casing surrounds the plastic part, plastic part and metal casing fixed connection, there is the seal port plastic part and metal casing's junction, metal casing and the inside sealed chamber that forms of plastic part, metal casing adopts metal material aluminium to make, metal casing includes the back plate, the back plate includes that the inner wall is protruding, the protruding longitudinal distribution of inner wall is in on the inner wall of back plate, the protruding thickness of inner wall is different, uneven distribution on the inner wall of back plate. The resonance frequency points of the aluminum shell are changed and dispersed by designing the metal shell with irregular wall thickness and unequal thickness, so that the resonance phenomenon of the aluminum shell is reduced or eliminated, the effect of eliminating noise is achieved, and the tone quality of the sound box is pure.
Description
Technical Field
The invention relates to the technical field of electronic equipment, in particular to an anti-resonance metal loudspeaker box.
Background
In order to improve the grade of the product and achieve the appearance requirement, the audio products usually use the metal material aluminum as the outer shell of the product. When the aluminum material is used as the enclosure of the sound box, especially when the aluminum enclosure is directly and tightly matched with the plastic part to form a sealed speaker cavity, the aluminum enclosure usually resonates to generate a vibration sound phenomenon, i.e., noise, so that the sound quality does not meet the requirement. When the aluminum shell loudspeaker box works, when the frequency point of the sound signal is the same as the frequency point of the aluminum shell, the aluminum shell can generate noise due to resonance. Therefore, there is a need in the market for a sound box with an aluminum metal shell capable of preventing noise caused by resonance, so as to solve the deficiencies of the prior art.
Disclosure of Invention
In order to overcome all the defects of the existing related products, the invention provides the anti-resonance metal sound box, and the resonance frequency points of the aluminum shell are changed and dispersed by designing the metal shell with irregular wall thickness and unequal thickness, so that the resonance phenomenon of the aluminum shell is reduced or eliminated, the effect of eliminating noise is achieved, and the sound quality of the sound box is pure.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a prevent resonance metal loudspeaker box, includes metal casing and plastic part, metal casing is the inside hollow rampart structure of both sides opening, the plastic part is used for placing the internal component of audio amplifier, metal casing surrounds the plastic part, plastic part and metal casing fixed connection, there is the sealing opening plastic part and metal casing's junction, metal casing and the inside sealed chamber that forms of plastic part, metal casing adopts metal material aluminium to make, metal casing includes the back plate, the back plate includes that the inner wall is protruding, the protruding longitudinal distribution of inner wall is in on the inner wall of back plate, the protruding thickness of inner wall is different, uneven distribution on the inner wall of back plate.
As a further improvement of the present invention, the metallic material aluminum includes an aluminum alloy.
As a further improvement of the present invention, the metal casing further comprises a front panel, wherein the thickness of the outer wall and the inner wall of the front panel is uniform, the front panel comprises through holes, the through holes are uniformly distributed on the front panel according to the set shape and number, and the through holes are used for transmitting the sound generated inside the sound box.
As a further improvement of the present invention, the metal shell further includes a first side plate and a second side plate, the first side plate and the second side plate are arc-shaped blocks, two ends of the first side plate are respectively and fixedly connected to one ends of the front plate and the back plate, two ends of the second side plate are respectively and fixedly connected to the other ends of the front plate and the back plate, the first side plate includes a circular opening, the second side plate includes a charging hole, and the opening and the charging hole are used for providing an interface space for internal components placed on the plastic part after the plastic part is installed in the metal shell.
As a further improvement of the present invention, the plastic component includes a hard plastic and a soft plastic, the hard plastic carries internal components of the sound box, the hard plastic is fixedly connected with the interior of the sound box, and the hard plastic is used for preventing sound emitted by the sound box body from diffusing from the side surface to cause tone quality damage, protecting the internal components of the sound box, and preventing the internal components of the sound box from being exposed in the air and being interfered by the outside.
As a further improvement of the invention, the soft plastic is positioned on the hard plastic and at the edge parts of two side surfaces connected with the back plate, the shape of the soft plastic is matched with the inner wall bulge, and the soft plastic is used for fixing the connection of the plastic part and the metal shell, thereby playing a role of sealing and preventing sound leakage.
As a further improvement of the invention, the metal shell surrounds the plastic part and the internal components placed on the plastic part to form a sealed cavity.
Compared with the prior art, the invention has the following advantages:
the invention changes and disperses the resonance frequency points of the aluminum shell by designing the metal shell with irregular wall thickness and unequal thickness, can eliminate noise, and ensures that the tone quality is purer, the internal plastic piece adopts soft and hard plastic double-color injection molding, the shape of the soft plastic is consistent with the shape of the contact surface of the aluminum shell, and a sealed cavity is formed after the plastic piece is assembled with the aluminum shell, thereby preventing air leakage, ensuring good sealing performance and ensuring clearer sound.
Drawings
Fig. 1 is a schematic view of an overall structure of an anti-resonance metal speaker according to an embodiment of the present invention;
fig. 2A is a schematic front view of a metal casing of a resonance-proof metal speaker according to an embodiment of the present invention;
fig. 2B is a schematic view of a back surface of a metal casing of the resonance-proof metal speaker according to the embodiment of the invention;
FIG. 3 is a cross-sectional view of a plastic part of an anti-resonance metal speaker according to an embodiment of the present invention;
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1, the resonance-proof metal speaker provided by the invention comprises a metal shell 1 and a plastic part 2, wherein the metal shell 1 is a circular wall structure with openings at two sides and a hollow interior, the plastic part 2 is used for placing internal elements of the speaker, the size of the plastic part 2 is slightly smaller than that of the metal shell 1, the metal shell 1 surrounds the plastic part 2, the plastic part 2 is fixedly connected with the metal shell 1, a sealing opening 3 is formed at the connecting part of the plastic part 2 and the metal shell 1, the metal shell 1 is used for protecting the internal plastic part 2 and the internal elements placed on the plastic part 2, and a sealing cavity is formed between the metal shell 1 and the plastic part 2; the metal shell 1 is made of a metal material aluminum material, and the metal material aluminum comprises an aluminum alloy.
As shown in fig. 2A, which is a schematic front view of a metal enclosure of an anti-resonance metal loudspeaker box according to an embodiment of the present invention, the metal enclosure 1 includes a front panel 11, a back panel 12, a first side panel 13, and a second side panel 14, the front panel 11 and the back panel 12 are respectively fixedly connected to two ends of the first side panel 13 and the second side panel 14, and the integrally formed metal enclosure 1 with the front panel 11, the back panel 12, the first side panel 13, and the second side panel 14 fixedly connected is a circular wall structure with two open sides and a hollow interior; the thickness of the outer wall and the inner wall of the front panel 11 is uniform, a plurality of through holes 111 are formed in the front panel 11, the through holes 111 can be in various shapes such as a square shape and a circular shape, the through holes 111 are uniformly distributed on the front panel 11 according to the set number, the shapes and the number of the through holes 111 are set according to actual requirements, and the through holes 111 are used for transmitting sound emitted from the interior of the sound box; the front panel 11 further includes front panel notches 112 as shown in fig. 2B, the front panel notches 112 are symmetrically distributed at the middle positions of the two side edges of the front panel 11, the length and depth of the front panel notches 112 are matched with the profile of the edge portion of the plastic part 2, so that the compatibility of the plastic part 2 and the metal shell 1 is ensured.
The inner walls of the back plate blocks 12 are unequal in thickness and irregular in wall thickness, and the outer walls are smooth planes as shown in fig. 2B and are uniform in thickness; the inner wall of the back plate 12 comprises a back plate notch 121 and an inner wall bulge 122; the back plate notches 121 are symmetrically distributed in the middle of the edges of the two sides of the inner wall of the back plate 12, the back plate notches 121 are provided with two inward-recessed square through holes, the length and the depth of the notches are the same as the outline of the edge part of the plastic part 2, and the compatibility of the plastic part 2 and the metal shell 1 after combination is ensured; the inner wall protrusions 122 are longitudinally distributed on the inner wall of the back plate 12, the inner wall protrusions 122 have different thicknesses, are unevenly distributed on the inner wall of the back plate 12 and are in a wave shape, so that the wall thickness of the inner wall of the back plate 12 is irregular and the thickness of the inner wall of the back plate 12 is unequal, the inner wall protrusions 122 are connected with a cavity where a horn inside a sound box is located, the horn inside the sound box generates a sound signal through vibration, and in the process of transmitting the sound signal to the back plate 12, because the wall thickness and the shape of the inner wall of the back plate 12 are irregular, the vibration frequency of the inner wall is dispersed, the inner wall is multi-sided and different in angle, the sound signal is transmitted from a single direction, when the sound signal reaches the inner wall of the back plate 12, the cross-sectional area of one side contacting with the sound is greatly reduced, so that the region of, the sound produced by the resonance of the aluminum shell caused by the vibration of the horn is greatly reduced, thereby achieving the effect of reducing or eliminating the resonance phenomenon of the back plate 12 and preventing the tone quality of the sound box from being interfered by noise. The first side plate 13 is an arc-shaped block, two ends of the first side plate 13 are respectively fixedly connected with one ends of the front plate 11 and the back plate 12, the first side plate 13 is provided with a plurality of circular holes, in this embodiment, the first side plate includes a first hole 131 and four second holes 132, the first hole 131 and the second holes 132 are arranged in the middle of the first side plate 13 side by side, the number and the diameter of the first hole 131 and the second hole 132 are set according to actual requirements, and the holes are used for providing interface spaces for internal components placed on the plastic part 2 after the plastic part 2 is placed in the metal shell 1.
The second side plate 14 is also an arc-shaped block, two ends of the second side plate 14 are respectively and fixedly connected with the other ends of the front plate 11 and the back plate 12, as shown in fig. 2B, a charging hole 141 is formed in the second side plate 14, the size of the charging hole 141 corresponds to that of a charging interface in the plastic part 2, and the charging hole is used for providing an interface space for the charging interface in the plastic part 2 when the plastic part 2 is installed in the metal shell 1.
Fig. 3 is a cross-sectional view of a plastic part of an anti-resonance metal loudspeaker box according to an embodiment of the present invention, where the plastic part 2 is used to place internal components of the loudspeaker box, the size of the plastic part 2 is slightly smaller than that of the metal housing 1, the metal housing 1 surrounds the plastic part 2, the plastic part 2 is fixedly connected to the metal housing 1, and the plastic part 2 is formed by two-color injection molding and includes a hard plastic 21 and a soft plastic 22; the hard plastic 21 bears internal elements of the sound box, the hard plastic 21 is fixedly connected with the interior of the sound box through screws, the screws are located in the middle of two side faces of the hard plastic 21, the number of the screws is set according to actual conditions, the hard plastic 21 protects the internal elements of the sound box, the internal elements of the sound box are prevented from being exposed in the air and being interfered by the outside, and sound emitted by the sound box body can be prevented from diffusing from the side faces to cause tone quality damage; the soft plastic 22 is located at the edge parts of two side surfaces connected with the back plate 12 on the hard plastic 21, the shape and the outline of the soft plastic 22 are matched with the inner wall protrusions 122, when the plastic part 2 is pushed into the metal shell 1, the soft plastic 22 is in close contact with the back plate 12 to form a sealing opening 3, the soft plastic 22 can bond and fix the fixed plastic part 2 and the metal shell 1 by pressing the sealing opening 3, and the soft plastic 22 plays a role in sealing and can prevent sound leakage.
The metal shell 1 surrounds the plastic part 2 and internal elements arranged on the plastic part 2, meanwhile, a sealing cavity is formed inside the metal shell 1 and the plastic part 2, and a sealing opening 3 is formed by tightly combining the soft plastic 22 and the back plate 12, so that the sealing cavity has good sealing performance, sound can be emitted through the through hole 111 in a concentrated manner, and the good quality of the sound is ensured; the formation of sealed chamber makes the internal component of audio amplifier be in sealed space, can effectively alleviate low frequency decay, makes the bass can radiate effectively, therefore sound can reach better effect.
The invention changes and disperses the resonance frequency points of the aluminum shell through the irregular wall thickness and unequal thickness of the aluminum shell, can eliminate noise, and enables the tone quality to be purer, the internal plastic piece adopts soft and hard plastic double-color injection molding, the shape of the soft plastic keeps consistent with the shape of the contact surface of the aluminum shell, and a sealed cavity is formed after the plastic piece is assembled with the aluminum shell, thereby preventing air leakage, ensuring good sealing performance and enabling the sound to be clearer.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (5)
1. An anti-resonance metal speaker, comprising: the loudspeaker box comprises a metal shell and a plastic part, wherein the metal shell is of a circular wall structure with openings at two sides and a hollow interior, the plastic part is used for placing internal elements of the loudspeaker box, the metal shell surrounds the plastic part, the plastic part is fixedly connected with the metal shell, a sealing opening is formed at the joint of the plastic part and the metal shell, and a sealing cavity is formed between the metal shell and the plastic part; the metal shell is made of metal material aluminum, the metal shell comprises a back plate, the back plate comprises inner wall bulges, the inner wall bulges are longitudinally distributed on the inner wall of the back plate, the inner wall bulges are different in thickness and are unevenly distributed on the inner wall of the back plate; the plastic part comprises hard plastic and soft plastic, the hard plastic carries internal elements of the sound box, the hard plastic is fixedly connected with the interior of the sound box, and the hard plastic is used for preventing sound emitted by the sound box body from diffusing from the side; the soft plastic is positioned on the hard plastic and the edge parts of two side surfaces connected with the back plate, the shape of the soft plastic is matched with the inner wall bulges, and the soft plastic is used for fixing the plastic part and the metal shell.
2. The anti-resonance metal loudspeaker box according to claim 1, wherein: the metal material aluminum comprises an aluminum alloy.
3. The anti-resonance metal loudspeaker box according to claim 1, wherein: the metal shell further comprises a front plate, the thickness of the outer wall and the thickness of the inner wall of the front plate are uniform, the front plate comprises through holes, the through holes are uniformly distributed on the front plate according to the set shape and number, and the through holes are used for transmitting the sound emitted from the interior of the sound box.
4. The anti-resonance metal loudspeaker box according to claim 3, wherein: the metal shell further comprises a first side plate and a second side plate, the first side plate and the second side plate are arc-shaped blocks, two ends of the first side plate are fixedly connected with one ends of the front plate and the back plate respectively, two ends of the second side plate are fixedly connected with the other ends of the front plate and the back plate respectively, the first side plate comprises a circular opening, the second side plate comprises a charging hole, and the opening and the charging hole are used for providing an interface space for internal elements placed on the plastic part after the plastic part is placed into the metal shell.
5. The anti-resonance metal loudspeaker box according to claim 1, wherein: the metal shell surrounds the plastic part and the internal elements arranged on the plastic part to form a sealed cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610892559.9A CN107948850B (en) | 2016-10-12 | 2016-10-12 | Anti-resonance metal loudspeaker box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610892559.9A CN107948850B (en) | 2016-10-12 | 2016-10-12 | Anti-resonance metal loudspeaker box |
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| Publication Number | Publication Date |
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| CN107948850A CN107948850A (en) | 2018-04-20 |
| CN107948850B true CN107948850B (en) | 2020-08-14 |
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| CN201610892559.9A Active CN107948850B (en) | 2016-10-12 | 2016-10-12 | Anti-resonance metal loudspeaker box |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109862464A (en) * | 2018-12-13 | 2019-06-07 | 宁波市海曙百纳音响有限公司 | A kind of sound equipment |
| CN109640215A (en) * | 2018-12-13 | 2019-04-16 | 宁波市海曙百纳音响有限公司 | Bass sound equipment |
| CN114268861B (en) * | 2021-12-28 | 2023-03-24 | 深圳市捷美斯实业有限公司 | Conference sound box |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203761536U (en) * | 2014-02-22 | 2014-08-06 | 陈宏伟 | Window bidirectional interphone outer sound box body structure |
| CN105916078A (en) * | 2016-06-29 | 2016-08-31 | 广东欧珀移动通信有限公司 | Audio structure and electronic device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103313171A (en) * | 2012-03-16 | 2013-09-18 | 鸿富锦精密工业（深圳）有限公司 | Electronic equipment with resonance resisting structure |
| CN202535529U (en) * | 2012-03-22 | 2012-11-14 | 东莞正阳电子有限公司 | Loudspeaker with anti-resonance effect |
| CN202979217U (en) * | 2012-11-09 | 2013-06-05 | 宁波市鄞州奥创电子有限公司 | Sound box equipment anti-resonance shock pad adjustable device |
| CN204350232U (en) * | 2014-12-17 | 2015-05-20 | 黑龙江真美广播通讯器材有限公司 | A kind of shockproof anti-interference audio amplifier |
| CN105376682A (en) * | 2015-12-11 | 2016-03-02 | 天津洪波电子集团有限公司 | High-frequency loudspeaker for desktop loudspeaker |
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2016
- 2016-10-12 CN CN201610892559.9A patent/CN107948850B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203761536U (en) * | 2014-02-22 | 2014-08-06 | 陈宏伟 | Window bidirectional interphone outer sound box body structure |
| CN105916078A (en) * | 2016-06-29 | 2016-08-31 | 广东欧珀移动通信有限公司 | Audio structure and electronic device |
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| CN107948850A (en) | 2018-04-20 |
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