CN110366078B - Unidirectional transparent plane sounding device - Google Patents
Unidirectional transparent plane sounding device Download PDFInfo
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- CN110366078B CN110366078B CN201910701009.8A CN201910701009A CN110366078B CN 110366078 B CN110366078 B CN 110366078B CN 201910701009 A CN201910701009 A CN 201910701009A CN 110366078 B CN110366078 B CN 110366078B
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- cover plate
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- power units
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- 230000007704 transition Effects 0.000 claims description 26
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 description 12
- 230000001070 adhesive effect Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
The invention relates to a structural member and a unidirectional transparent plane sound generating device, wherein the structural member comprises: the upper cover plate is provided with at least one row of first grooves corresponding to one ends of the power units, the at least one row of first grooves are used for mounting and fixing one ends of the power units, and the other side of the upper cover plate is used for being connected with a vibration medium; one side of the lower cover plate is provided with at least one row of second grooves corresponding to the other ends of the power units, the at least one row of second grooves are used for mounting and fixing the other ends of the power units, and the other side of the lower cover plate is used for being connected with the base; the buckle is connected with the upper cover plate and the lower cover plate, and the upper cover plate is fixedly connected with the lower cover plate through the buckle; each row of first grooves consists of a plurality of first grooves, and the first grooves are uniformly arranged along the length direction of the upper cover plate. The structural member can simultaneously install and fix a plurality of power units between the vibration medium and the base, and effectively simplifies the fixing mode and the process procedure.
Description
Technical Field
The invention relates to a sound generating device, in particular to a structural member and a unidirectional transparent plane sound generating device.
Background
Referring to fig. 6, a schematic structural diagram of a unidirectional transparent planar sound emitting device of the prior art is shown. The working principle of the unidirectional transparent plane sounding device is that the driving circuit transmits an audio signal to the power unit through the signal line, the power unit generates vibration with corresponding frequency to push the plane transparent material vibrating diaphragm connected with the power unit to generate vibration, and therefore air vibration is pushed to generate sound.
Referring to fig. 6 and 7, fig. 7 is a schematic diagram showing a structure in which a plurality of power units of the prior art are mounted and fixed between a vibration medium and a base. The power units in the prior art are arranged around the black ink area of the base in a circle, the intervals between the power units are equal, two ends of the power units are directly bonded with the vibration medium and the base in an adhesive bonding mode, and electrodes of the power units are welded with the signal line in a welding mode.
In carrying out the invention, the inventors have found that the prior art has at least the following problems:
1. because the cross-sectional areas at the two ends of the power unit are small, when the power unit is fixed, the contact area between the power unit and a vibration medium is too small, so that the vibration force of the power unit is transmitted to the vibration medium to be weakened when the audio is played, and the volume is reduced to be sharp;
2. because the aluminum fixing frame at the periphery of the power unit is restricted, the vibration of the power unit is restricted by the aluminum fixing frame, so that the vibration force is weakened, the farther the power unit is away from the aluminum fixing frame, the smaller the restriction force of the power unit is, the larger the vibration amplitude of the driving vibration medium is, and the lower the effect of the bass part is. The unidirectional plane sound production device of the scheme has better sound quality effect only in the middle-pitch and high-pitch parts when playing the audio, has weak vibration sense in the low-pitch part, has not muddy sound, has more noisy sound and poorer sound production effect, and can not restore the original sound color well.
Meanwhile, most of improvement schemes of the prior art for bass effect are directed at improvement methods proposed by opaque sound generating devices, which are not applied to transparent sound generating devices, and the improvement methods of the prior art cannot meet the application conditions of the sound generating devices on side windows of rail transit and automobile skylights.
Therefore, there is an urgent need for a structural member for fixing a power unit on such a unidirectional planar sound generating device and a unidirectional transparent planar sound generating device, so as to improve the bass effect of such a sound generating device and improve the playing sound quality.
Disclosure of Invention
In order to solve the technical problems in the prior art, the embodiment of the invention provides a structural member and a unidirectional transparent plane sound generating device. The specific technical scheme is as follows:
in a first aspect, a structural member is provided for mounting and securing a plurality of power units between a vibration medium and a base, wherein the structural member comprises:
the upper cover plate is provided with at least one row of first grooves corresponding to one ends of the power units, the at least one row of first grooves are used for mounting and fixing one ends of the power units, and the other side of the upper cover plate is used for being connected with a vibration medium;
one side of the lower cover plate is provided with at least one row of second grooves corresponding to the other ends of the power units, the at least one row of second grooves are used for mounting and fixing the other ends of the power units, and the other side of the lower cover plate is used for being connected with the base; and
the buckle is connected with the upper cover plate and the lower cover plate, and the upper cover plate is fixedly connected with the lower cover plate through the buckle;
wherein, each row of first recess comprises a plurality of first recesses, and a plurality of first recesses evenly set up along the length direction of upper cover plate, and each row of second recess comprises a plurality of second recesses, and a plurality of second recesses evenly set up along the length direction of lower cover plate.
In a first possible implementation manner of the first aspect, the upper cover plate further includes:
a first fixing portion;
one end of the first arc transition part is connected with one end of the first fixing part; and
one end of the second fixing part is connected with the other end of the first arc transition part, and the second fixing part is arranged vertically to the first fixing part;
at least one row of first grooves are arranged on the first fixing part, the first arc transition part and the second fixing part.
With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the first fixing portion, the first arc transition portion, and the second fixing portion are an integral structure.
In a third possible implementation manner of the first aspect, the lower cover plate further includes:
a third fixing portion;
one end of the second arc transition part is connected with one end of the third fixing part; and
one end of the fourth fixing part is connected with the other end of the second arc transition part, and the third fixing part and the fourth fixing part are vertically arranged;
at least one row of second grooves is arranged on the third fixing part, the second arc transition part and the fourth fixing part.
With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the third fixing portion, the second arc transition portion, and the fourth fixing portion are an integral structure.
In a second aspect, a unidirectional transparent planar sound emitting apparatus is provided, wherein the unidirectional transparent planar sound emitting apparatus includes:
a base;
one side of the fixed frame is arranged on the base and is positioned at the edge of the base;
the vibration medium is arranged on the other side of the fixed frame and is arranged on the base through the fixed frame;
four structural members according to any one of the first aspect, wherein the four structural members are arranged at four corners of the base, an upper cover plate in each structural member is connected with the vibration medium, a lower cover plate in each structural member is connected with the base, and an upper cover plate and a lower cover plate in each structural member are fixedly connected through a buckle;
one end of each power unit is correspondingly arranged and fixed in at least one row of first grooves on the upper cover plate of the four structural members, the other end of each power unit is correspondingly arranged and fixed in at least one row of second grooves on the lower cover plate of the four structural members, and the power units are arranged between the vibration medium and the base through the four structural members; and
and the signal line is arranged on the base and connected with the power units, and the signal line is used for transmitting signals.
In a first possible implementation manner of the second aspect, the base has a transparent area and a black ink area, the transparent area is located in a middle portion of the base, the black ink area is located around the base, and the structural component and the signal line are located in the black ink area.
In a second possible implementation manner of the second aspect, the number of the at least one row of first grooves is two, and the two rows of first grooves are located on the inner side and the outer side of the upper cover plate; the number of the at least one row of second grooves is two, and the two rows of second grooves are positioned on the inner side and the outer side of the lower cover plate; the power units are correspondingly arranged in the two rows of first grooves and the two rows of second grooves, the power units positioned at the inner sides of the power units are connected in parallel in the same polarity, and the power units positioned at the outer sides of the power units are connected in parallel in the same polarity.
With reference to the second possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the signal line includes a low-frequency signal line and a medium-high-frequency signal line, the low-frequency signal line is connected to a power unit located on an inner side among the plurality of power units, the low-frequency signal line is used for transmitting a low-frequency signal, the medium-high-frequency signal line is connected to a power unit located on an outer side among the plurality of power units, and the medium-high-frequency signal line is used for transmitting a medium-high-frequency signal.
In a fourth possible implementation manner of the second aspect, the signal line is a conductive silver paste wire.
Compared with the prior art, the invention has the advantages that:
1. the structural member can simultaneously install and fix the plurality of power units between the vibration medium and the base, and the plurality of power units do not need to be bonded one by one, so that the fixing mode and the process procedure are effectively simplified.
2. The contact area between the power units and the vibration medium is indirectly increased through the structural member, the shearing force between the cross sections of the two ends of the power units and the vibration medium and the base is relieved, the stability of the whole structure is improved, the conduction of the vibration force is enhanced through the structural member, and the volume of the sound generating device is improved.
3. According to the unidirectional transparent plane sound production device, the plurality of power units are arranged at the four corners of the base, so that the plurality of power units can effectively show the bass effect when driving the vibration medium to vibrate, the effect of the sound production device in the bass part is enhanced, and the sound quality is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a plurality of power units according to an embodiment of the invention mounted to a structural member.
Fig. 2 is a schematic top view of an upper cover plate according to an embodiment of the invention.
Fig. 3 is a schematic top view of a lower cover plate according to an embodiment of the invention.
Fig. 4 is a schematic structural view of a structural member for mounting and fixing a plurality of power units between a vibration medium and a base according to one or two embodiments of the present invention.
Fig. 5 is a schematic structural diagram of a unidirectional transparent planar sound emitting device according to two embodiments of the present invention.
Fig. 6 is a schematic structural view of a unidirectional transparent planar sound emitting apparatus of the prior art.
Fig. 7 is a schematic view of a structure in which a plurality of power units of the prior art are mounted and fixed between a vibration medium and a base.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
In an embodiment of the present invention, please refer to fig. 1, which shows a schematic structure of a plurality of power units 2 mounted on a structural member 1 according to an embodiment of the present invention. The structure 1 is used for installing and fixing a plurality of power units 2 between a vibration medium 3 and a base 4, and the structure 1 comprises an upper cover plate 101, a lower cover plate 102 and a buckle 103, wherein:
referring to fig. 1 again, one side 1011 of the upper cover 101 has at least one row of first grooves 11 corresponding to one ends of the plurality of power units 2, each row of first grooves 11 is composed of a plurality of first grooves 11, and the plurality of first grooves 11 are uniformly arranged along the length direction of the upper cover 101. In the embodiment disclosed, at least one row of first protrusions 12 is disposed on one side 1011 of the upper cover 101, and at least one row of first grooves 11 is correspondingly disposed on at least one row of protrusions 12, but not limited thereto.
At least one row of first grooves 11 is used for mounting and fixing one end of a plurality of power units 2, the other side 1012 of the upper cover plate 101 is used for being connected with the vibration medium 3, and the connection mode is usually bonding by using structural adhesive, so that structural stress must be transmitted in the selection of the structural adhesive and the bonding point thereof, and the structural integrity of the structural adhesive is not affected in the design scope.
When the upper cover plate 101 is adhered to the vibration medium 3, one end of the plurality of power units 2 is connected to the vibration medium 3 through the upper cover plate 101, and the surface area of the other side 1012 of the upper cover plate 101 is larger than the surface area of one end of the plurality of power units 2, which is equivalent to increasing the adhering area of the plurality of power units 2 and the vibration medium 3, which is further equivalent to increasing the firmness of the plurality of power units 2 in adhering, so that the situation that the adhesive is peeled off due to vibration is avoided.
In a preferred embodiment, the shape of the other side 1012 of the upper cover plate 101 corresponds to the shape of the vibration medium 3, for example, when the shape of the vibration medium 3 is a plane, the shape of the other side 1012 of the upper cover plate 101 is a plane, and when the shape of the vibration medium 3 is a curved surface, the shape of the other side 1012 of the upper cover plate 101 is a curved surface with the same curvature as the vibration medium 3, but not limited thereto.
In a preferred embodiment, for further description of the structural member 1 shown in fig. 1, please refer to fig. 2, which shows a schematic top view of the upper cover plate 101 according to an embodiment of the present invention. The upper cover plate 101 further includes a first fixing portion 15, a first arc transition portion 16, and a second fixing portion 17, where one end of the first arc transition portion 16 is connected to one end of the first fixing portion 15, one end of the second fixing portion 17 is connected to the other end of the first arc transition portion 16, the second fixing portion 17 is perpendicular to the first fixing portion 15, and at least one row of first grooves 11 are disposed on the first fixing portion 15, the first arc transition portion 16, and the second fixing portion 17, but not limited thereto. In another preferred embodiment, the first fixing portion 15, the first arc transition portion 16 and the second fixing portion 17 are integrated, but not limited thereto.
One side 1021 of the lower cover plate 102 is provided with at least one row of second grooves 13 corresponding to the other ends of the plurality of power units 2, each row of second grooves 13 is composed of a plurality of second grooves 13, and the plurality of second grooves 13 are uniformly arranged along the length direction of the lower cover plate 102. In the embodiment disclosed, one side 1021 of the lower cover plate 102 is provided with at least one row of second protrusions 14, and at least one row of first grooves 11 is correspondingly arranged on at least one row of second protrusions 14, but not limited thereto.
At least one row of second grooves 13 is used for mounting and fixing the other ends of the power units 2, the other side 1022 of the lower cover plate 102 is used for connecting with the base 4, and the connection mode is usually bonding by using structural adhesive, so that structural stress must be transmitted in terms of selection of the structural adhesive and bonding points thereof, and the structural integrity is not affected in the design scope.
When the lower cover plate 102 is adhered to the base 4, the other ends of the power units 2 are connected to the base 4 through the lower cover plate 102, and the surface area of the other side 1022 of the lower cover plate 102 is larger than that of the other ends of the power units 2, so that the adhesion area of the power units 2 to the base 4 is increased, the firmness of the power units 2 in adhesion is increased, and the situation that the adhesive is peeled off due to vibration is avoided.
In a preferred embodiment, the shape of the other side 1022 of the lower cover 102 corresponds to the shape of the base 4, for example, when the shape of the base 4 is a plane, the shape of the other side 1022 of the lower cover 102 is a plane, and when the shape of the base 4 is a curved surface, the shape of the other side 1022 of the lower cover 102 is a curved surface with the same curvature as the vibration medium 3, but not limited thereto.
In a preferred embodiment, for further description of the structural member 1 shown in fig. 1, please refer to fig. 3, which shows a schematic top view of the lower cover plate 102 according to an embodiment of the present invention. The lower cover plate 102 further includes a third fixing portion 18, a second circular arc transition portion 19, and a fourth fixing portion 20, one end of the second circular arc transition portion 19 is connected to one end of the third fixing portion 18, one end of the fourth fixing portion 20 is connected to the other end of the second circular arc transition portion 19, the third fixing portion 18 and the fourth fixing portion 20 are vertically arranged, and at least one row of second grooves 13 are arranged on the third fixing portion 18, the second circular arc transition portion 19, and the fourth fixing portion 20, but not limited thereto. In another preferred embodiment, the third fixing portion 18, the second arc transition portion 19 and the fourth fixing portion 20 are integrated, but not limited thereto.
The buckle 103 is connected with the upper cover plate 101 and the lower cover plate 102, the upper cover plate 101 is fixedly connected with the lower cover plate 102 through the buckle 103, and then the plurality of power units 2 are fixed, so that the plurality of power units 2 are simultaneously installed and fixed between the vibration medium 3 and the base 4. There may be no particular requirement for the choice of structure of the catch 103 in this embodiment, referring to the conventional choice by those skilled in the art.
Referring to fig. 4, a schematic structural diagram of a structural member 1 according to an embodiment of the present invention is shown, in which a plurality of power units 2 are installed and fixed between a vibration medium 3 and a base 4. When the plurality of power units 2 are mounted between the vibration medium 3 and the base 4 in the fixing structure 1, please refer to fig. 1 again, two ends of the plurality of power units 2 are respectively inserted into at least one row of first grooves 11 and at least one row of second grooves 13, so that the plurality of power units 2 are located between the upper cover plate 101 and the lower cover plate 102, the upper cover plate 101 and the lower cover plate 102 are fixedly connected through the buckle 103, and further the plurality of power units 2 are fixed, and the plurality of power units 2 in the fixing structure 1 are connected in parallel with each other in the same polarity, so that the plurality of power units 2 are all input of the same signal line, but the invention is not limited thereto.
Referring to fig. 4 again, the upper cover plate 101, the vibration medium 3, the lower cover plate 102 and the base 4 are bonded together by the structural adhesive, so that the plurality of power units 2 are simultaneously installed and fixed between the vibration medium 3 and the base 4 without bonding the plurality of power units 2 one by one, and the fixing mode and the process procedure are effectively simplified.
As for the structural adhesive and its bonding points, it is necessary to be able to transmit structural stresses without affecting the structural integrity thereof within the design scope. Through structural bonding, a plurality of power units 2 can realize better piezoelectricity deformation conduction through structure 1, promote vibration medium 3 vibration to make sound.
Meanwhile, the bonding surface area of the plurality of power units 2 with the vibration medium 3 and the base 4 through the fixing structure 1 (the upper cover plate 101 and the lower cover plate 102) is larger than the bonding surface area of the power units with the vibration medium 3 and the base 4 directly, so that the viscosity of the adhesive is improved, and the phenomenon that the power units 2 are peeled off due to adhesive is avoided.
And the contact area between a plurality of power units 2 and the vibration medium 3 is indirectly increased through the structural member 1 (the upper cover plate 101), so that the shearing force between the cross sections of the two ends of the power units 2 and the vibration medium 3 and the base 4 is relieved, the stability of the whole structure is improved, the conduction of the vibration force is enhanced through the structural member 1, and the volume of the sound generating device is improved.
In the two embodiments of the present invention, please refer to fig. 5, which illustrates a schematic structural diagram of a unidirectional transparent planar sound emitting device 5 according to the two embodiments of the present invention. The unidirectional transparent planar sound generating device 5 comprises a base 4, a fixed frame 6, a vibration medium 3, four structural members 1 as shown in the above embodiment, a plurality of power units 2 and a signal line 7, wherein:
referring to fig. 4 again, the base 4 is mainly used for providing rigid support for the fixing frame 6, the vibration medium 3, the structural member 1, the plurality of power units 2 and the signal lines 7, and preventing sound from penetrating out of the base 4 side to realize a unidirectional sounding function, and in this embodiment, the base 4 may be selected from a rail transit side window or an automobile sunroof, but not limited thereto.
In a preferred embodiment, referring again to fig. 5, the base 4 has a transparent area 41 and a black ink area 42, the transparent area 41 is located in the middle of the base 4, and the black ink area 42 is located around the base 4, but not limited thereto.
One side of the fixing frame 6 is disposed on the base 4 and is located at a side of the base 4, and the fixing frame 6 is mainly used for mounting and fixing the vibration medium 3, and in this embodiment, an aluminum fixing frame may be selected for the fixing frame 6, but not limited thereto.
The vibration medium 3 is disposed on the other side of the fixing frame 6, and the vibration medium 3 is disposed on the base 4 through the fixing frame 6, and in this embodiment, the material of the vibration medium 3 may be Polycarbonate (PC), polymethacrylate (PMMA) or other transparent plastics suitable for the use environment, or may be a hard material such as metal, glass, etc., but not limited thereto.
Referring again to fig. 5, four structural members 1 are disposed at four corners of the base 4, preferably in the black ink region 42, but not limited thereto. The upper cover plate 101 in each structural member 1 is connected with the vibration medium 3, and the connection mode may be, but not limited to, bonding the upper cover plate 101 and the vibration medium 3 together through structural glue. The lower cover plate 102 of each structural member 1 is connected to the base 4, and the connection manner may be, but not limited to, bonding the upper cover plate 101 and the vibration medium 3 together by using a structural adhesive. The upper cover plate 101 and the lower cover plate 102 in each structural member 1 are fixedly connected through a buckle 103.
One end of the power units 2 is correspondingly arranged and fixed in at least one row of first grooves 11 on the upper cover plate 101 in the four structural members 1, the other end of the power units 2 is correspondingly arranged and fixed in at least one row of second grooves 13 on the lower cover plate 102 in the four structural members 1, the power units 2 are arranged between the vibration medium 3 and the base 4 through the four structural members 1, and the number of the power units 2 can be selected according to the size of the area of the base 4.
Referring to fig. 5 again, the power units 2 are fixed to four corners of the base 4 and the vibration medium 3 through four structural members 1, that is, the power units 2 are not arranged at the long straight edges of the base 4 and the vibration medium 3, and the power units 2 are arranged at two ends of the power units, so that when the vibration force is transmitted by the power units 2, the vibration medium 3 in the long straight edges can delay the transmission of the vibration force, the bass effect is enhanced, and the power units 2 are fixed between the base 4 and the vibration medium 3 through the structural members 1, so that the contact area between the power units 2 and the vibration medium 3 is increased, the transmission of the vibration force is enhanced, and the tone quality is improved.
In a preferred embodiment, the number of the at least one row of first grooves 11 is two, and the two rows of first grooves 11 are located on the inner side and the outer side of the upper cover plate 101; the number of the at least one row of second grooves 13 is two, and the two rows of second grooves 13 are positioned on the inner side and the outer side of the lower cover plate 102; the power units 2 are correspondingly arranged in the two rows of first grooves 11 and the two rows of second grooves 13 to form two rows of power units 2, wherein one row of power units 2 close to the fixed frame 6 is an outer ring power unit, and one row of power units 2 far away from the fixed frame 6 is an inner ring power unit. The power units 2 positioned at the inner side (namely, the inner ring power units) of the power units 2 are connected in parallel in the same polarity, and the power units 2 positioned at the outer side (namely, the outer ring power units) of the power units 2 are connected in parallel in the same polarity.
The outer ring power unit is close to the fixed frame 6, so that the outer ring power unit is constrained to a certain extent when driving the vibration medium 3 to vibrate, the vibration amplitude is reduced, and the bass effect is poor; the inner ring power unit is far away from the peripheral fixed frame 6, so that the restraining force applied to the inner ring power unit when driving the vibration medium 3 to vibrate is small, the amplitude of vibration can be improved, and the bass effect is improved.
The signal line 7 is disposed on the base 4 and connected to the plurality of power units 2, and the signal line 7 is used for transmitting signals, and the signal line 7 disclosed in the embodiment is conductive silver paste and is disposed in the black ink area 42 by a printing manner, but not limited thereto.
In a preferred embodiment, referring again to fig. 5, the signal line 7 includes a low frequency signal line 71 and a medium and high frequency signal line 72, the low frequency signal line 71 is connected to the power unit 2 located at the inner side of the plurality of power units 2, and when a signal is input, the low frequency signal is transmitted to the power unit 2 located at the inner side through the low frequency signal line 71. The medium-high frequency signal line 72 is connected to the power unit 2 located outside the plurality of power units 2, and when a signal is input, the medium-high frequency signal is transmitted to the power unit 2 located outside through the medium-high frequency signal line 72.
When playing audio, the audio signal is divided into a low-frequency signal and a medium-high frequency signal by the prepositive frequency dividing circuit, the low-frequency signal and the medium-high frequency signal are correspondingly input into the low-frequency signal line 71 and the medium-high frequency signal line 72, and the inner ring power unit and the sound generating system formed by the inner ring power unit are equivalent to the bass unit of the whole sound generating device, so that the tone quality effect of the whole sound generating device can be effectively improved.
While the foregoing description illustrates and describes several preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as limited to other embodiments, and is capable of numerous other combinations, modifications and environments and is capable of changes or modifications within the scope of the inventive concept as described herein, either as a result of the foregoing teachings or as a result of the knowledge or technology in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (6)
1. A unidirectional transparent planar sound emitting apparatus, characterized in that the unidirectional transparent planar sound emitting apparatus comprises:
a base;
a fixed frame, one side of which is arranged on the base and is positioned at the edge of the base;
the vibration medium is arranged on the other side of the fixed frame and is arranged on the base through the fixed frame;
the four structural members are used for installing and fixing a plurality of power units between a vibration medium and a base, the four structural members are arranged at four corners of the base and comprise an upper cover plate, a lower cover plate and buckles, one side of the upper cover plate is provided with at least one row of first grooves corresponding to one ends of the power units, the at least one row of first grooves are used for installing and fixing one ends of the power units, the other side of the upper cover plate is used for being connected with the vibration medium, one side of the lower cover plate is provided with at least one row of second grooves corresponding to the other ends of the power units, the at least one row of second grooves are used for installing and fixing the other ends of the power units, the other side of the lower cover plate is used for being connected with the base, the buckles are connected with the upper cover plate and the lower cover plate, the upper cover plate is fixedly connected with the lower cover plate through the buckles, the first grooves of each row are formed by a plurality of first grooves, the first grooves are uniformly arranged along the length direction of the upper cover plate, one side of the lower cover plate is provided with the second grooves which are uniformly connected with the base, the structural members are uniformly arranged along the length of the upper cover plate, and each second groove is connected with the upper cover plate, and each structural member is fixedly connected with the upper cover plate through the second cover plate;
one end of each power unit is correspondingly arranged and fixed in at least one row of first grooves on the upper cover plate of the four structural members, the other end of each power unit is correspondingly arranged and fixed in at least one row of second grooves on the lower cover plate of the four structural members, and the power units are arranged between the vibration medium and the base through the four structural members; and
the signal line is arranged on the base and connected with the power units, and the signal line is used for transmitting signals;
the base is provided with a transparent area and a black ink area, the transparent area is positioned in the middle of the base, the black ink area is positioned at the periphery of the base, and the structural part and the signal circuit are positioned in the black ink area;
the number of the at least one row of first grooves is two, and the two rows of first grooves are positioned on the inner side and the outer side of the upper cover plate; the number of the at least one row of second grooves is two, and the two rows of second grooves are positioned on the inner side and the outer side of the lower cover plate; the power units are correspondingly arranged in the two rows of first grooves and the two rows of second grooves, the power units positioned at the inner side of the power units are connected in parallel in the same polarity, and the power units positioned at the outer side of the power units are connected in parallel in the same polarity;
the signal line comprises a low-frequency signal line and a medium-high frequency signal line, the low-frequency signal line is connected with the power unit positioned on the inner side in the plurality of power units, the low-frequency signal line is used for transmitting low-frequency signals, the medium-high frequency signal line is connected with the power unit positioned on the outer side in the plurality of power units, and the medium-high frequency signal line is used for transmitting medium-high frequency signals.
2. The unidirectional transparent planar sound generating apparatus of claim 1, wherein the upper cover plate further comprises:
a first fixing portion;
one end of the first arc transition part is connected with one end of the first fixing part; and
one end of the second fixing part is connected with the other end of the first arc transition part, and the second fixing part is vertically arranged with the first fixing part;
the at least one row of first grooves are arranged on the first fixing portion, the first arc transition portion and the second fixing portion.
3. The unidirectional transparent planar sound generating apparatus of claim 2, wherein the first fixing portion, the first circular arc transition portion and the second fixing portion are of an integral structure.
4. The unidirectional transparent planar sound generating apparatus of claim 1, wherein the lower cover plate further comprises:
a third fixing portion;
one end of the second arc transition part is connected with one end of the third fixing part; and
one end of the fourth fixing part is connected with the other end of the second arc transition part, and the third fixing part and the fourth fixing part are vertically arranged;
the at least one row of second grooves are arranged on the third fixing portion, the second arc transition portion and the fourth fixing portion.
5. The unidirectional transparent planar sound generating apparatus of claim 4, wherein the third fixed portion, the second circular arc transition portion and the fourth fixed portion are of unitary construction.
6. A unidirectional transparent planar sound generating apparatus as claimed in claim 1, characterized in that said signal lines are conductive silver paste wires.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910701009.8A CN110366078B (en) | 2019-07-31 | 2019-07-31 | Unidirectional transparent plane sounding device |
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| CN201910701009.8A CN110366078B (en) | 2019-07-31 | 2019-07-31 | Unidirectional transparent plane sounding device |
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| CN110366078B true CN110366078B (en) | 2024-04-02 |
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| CN113871993B (en) * | 2021-09-06 | 2023-07-28 | 江苏铁锚玻璃股份有限公司 | Transparent sound box and connection method of internal circuit thereof |
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