CN109462806A - Loudspeaker - Google Patents
Loudspeaker Download PDFInfo
- Publication number
- CN109462806A CN109462806A CN201811653606.XA CN201811653606A CN109462806A CN 109462806 A CN109462806 A CN 109462806A CN 201811653606 A CN201811653606 A CN 201811653606A CN 109462806 A CN109462806 A CN 109462806A
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- China
- Prior art keywords
- washer
- magnetic circuit
- voice coil
- sub
- coil portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000000712 assembly Effects 0.000 claims abstract description 15
- 238000000429 assembly Methods 0.000 claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 72
- 229910052742 iron Inorganic materials 0.000 claims description 36
- 230000015572 biosynthetic process Effects 0.000 claims description 12
- 238000004804 winding Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 13
- 230000006978 adaptation Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004992 fission Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Classifications
-
- 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
- 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
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The present invention discloses a kind of loudspeaker, comprising: frame；Magnetic circuit system；It is installed on frame, the magnetic circuit system has a magnetic circuit gap；And vibrational system, including vibrating diaphragm and Voice coil assemblies, the vibrating diaphragm is installed on frame, the Voice coil assemblies include speech coil framework and the voice coil portion that one end is installed on vibrating diaphragm, the voice coil portion protrudes into magnetic circuit gap, the voice coil portion includes spaced first voice coil portion and the second voice coil portion, is vacant area between first voice coil portion and the second voice coil portion.Loudspeaker of the present invention is spaced apart the first voice coil portion and the second voice coil portion by setting voice coil portion to, it is possible to increase effective voice coil winding in voice coil portion, so as to improve the symmetry of vibrational system vibration and linear, so as to reduce harmonic distortion.
Description
Technical field
The present invention relates to electroacoustic techniques field, in particular to a kind of loudspeaker.
Background technique
During existing speaker operation, voice coil portion is easily separated from magnetic circuit gap, to easily cause the non-of loudspeaker
Linear distortion.
Summary of the invention
The main object of the present invention is to propose a kind of loudspeaker, it is intended to solve the skill that existing loudspeaker is easy non-linear distortion
Art problem.
To achieve the above object, a kind of loudspeaker proposed by the present invention, comprising:
Frame；
Magnetic circuit system；It is installed on the frame, the magnetic circuit system has a magnetic circuit gap；And
Vibrational system, including vibrating diaphragm and Voice coil assemblies, the vibrating diaphragm are installed on the frame, and the Voice coil assemblies include one
End is installed on speech coil framework and the voice coil portion of the vibrating diaphragm, and the voice coil portion protrudes into the magnetic circuit gap, the voice coil portion packet
Spaced first voice coil portion and the second voice coil portion are included, is vacant area between first voice coil portion and the second voice coil portion.
Optionally, the magnetic circuit gap includes first segment and the second segment for being connected to the first segment both ends and
Three sections, the first segment corresponds to vacant area's setting, and the width of the first segment is greater than the width of the second segment and third section
Degree.
Optionally, the middle section of the first segment is arranged close to the middle section in the vacant area.
Optionally, the medial surface in the magnetic circuit gap sets to the concave to form inner groove, so that the magnetic circuit gap is divided into institute
State first segment, the second segment and the third section；Alternatively,
Recessed formation outer groove is faced out on the outside of the magnetic circuit gap, so that the magnetic circuit gap is divided into described first
Section, the second segment and the third section；Or
The medial surface in the magnetic circuit gap sets to the concave to form inner groove, faces out recessed shape on the outside of the magnetic circuit gap
At outer groove, the inner groove corresponds to the outer groove setting, so that the magnetic circuit gap is divided into the first segment, described second
Section and the third section.
Optionally, the loudspeaker further includes center short-circuited conducting sleeve, and the center short-circuited conducting sleeve is installed on the inner groove；Or
The loudspeaker further includes side short-circuited conducting sleeve, and the side short-circuited conducting sleeve is installed on the outer groove；Or
The loudspeaker further includes center short-circuited conducting sleeve and side short-circuited conducting sleeve, and the center short-circuited conducting sleeve is installed on the inner groove,
The side short-circuited conducting sleeve is installed on the outer groove.
Optionally, the length in first voice coil portion is equal to the length in second voice coil portion.
Optionally, the ratio between the length in the vacant area and the length in first voice coil portion is greater than or equal to 0.2,
And it is less than or equal to 1；And/or
The length in the vacant area is greater than or equal to 2 millimeters, and is less than or equal to 10 millimeters.
Optionally, first voice coil portion and the second voice coil portion are coiled by same root coiling；Or
First voice coil portion and the second Voice coil portions are not coiled by different coilings；First voice coil portion and the second sound
The electrical connection of circle portion.
Optionally, the magnetic circuit system includes lower clamp plate, and the center magnetic path and side magnetic circuit that are mounted on the lower clamp plate,
The center magnetic path includes the centring magnet set on the lower clamp plate upper surface, and the side magnetic circuit includes being set on the lower clamp plate
The side magnet on surface, the side magnet are set to the side of the centring magnet；Institute is formed between the center magnetic path and side magnetic circuit
State magnetic circuit gap.
Optionally, the center magnetic path further includes the center washer set on the centring magnet upper surface, the center China
Department forms the magnetic circuit gap with side magnet upper end；Or
The side washer of the magnet upper surface when magnetic circuit further includes being set to described, the side washer and the centring magnet
Upper end forms the magnetic circuit gap；Or
The center magnetic path further includes the center washer set on the centring magnet upper surface, and the side magnetic circuit further includes setting
In the while washer in magnet upper surface, the side washer is set to the side of the center washer, to be formed between the magnetic circuit
Gap.
Optionally, the lateral surface of the center washer sets to the concave to form inner groove；Or
Recessed formation outer groove is faced out on the inside of the side washer；Or
The lateral surface of the center washer sets to the concave to form inner groove, faces out recessed formation on the inside of the side washer
Outer groove, the inner groove correspond to the outer groove setting.
Optionally, the center washer include set on the centring magnet upper surface the first sub- washer and be set to described the
Second sub- washer of one sub- washer upper surface, the inner groove are opened in the upper end of the described first sub- washer, and through described the
The upper surface of one sub- washer, the lower surface of the second sub- washer and the described first sub- washer enclose the inner groove；Alternatively,
The inner groove is opened in the lower end of the described second sub- washer, and runs through the lower surface of the described second sub- washer, first son
The upper surface of washer and the described second sub- washer enclose inner groove；Alternatively, the inner groove includes being set to first son China
First pilot trench of the upper end of department and the second pilot trench set on the lower end of the described first sub- washer, first pilot trench and the second son
Slot cooperatively forms the inner groove；And/or
It is described while washer include set on it is described while magnet upper surface the sub- washer of third and be set to the sub- washer of the third on
The 4th sub- washer on surface, the outer groove are opened in the upper end of the sub- washer of the third, and through the sub- washer of the third
Upper surface, the lower surface of the 4th sub- washer and the sub- washer of the third enclose the outer groove；Alternatively, the outer groove
It is opened in the lower end of the 4th sub- washer, and runs through the lower surface of the 4th sub- washer, the upper table of the sub- washer of third
Face and the 4th sub- washer enclose the outer groove；Alternatively, the outer groove includes set on the upper of the sub- washer of the third
The third pilot trench at end and the 4th pilot trench set on the lower end of the 4th sub- washer, the third pilot trench and the cooperation of the 4th pilot trench
Form the inner groove.
Optionally, the magnetic circuit system includes U iron and the center magnetic path in the U iron, the center magnetic path with
The magnetic circuit gap is formed between the side wall of the U iron；Or
The magnetic circuit system include T iron and be set to the T iron column side side magnetic circuit, the column of the T iron with
The magnetic circuit gap is formed between the side magnetic circuit.
Loudspeaker of the present invention is spaced apart the first voice coil portion and the second voice coil portion by setting voice coil portion to, it is possible to increase
Effective voice coil winding in voice coil portion, so as to improve the symmetry of vibrational system vibration and linear, so as to reduce harmonic distortion.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the side view of one embodiment of loudspeaker of the present invention；
Fig. 2 is the top view of loudspeaker in Fig. 1；
Fig. 3 is the schematic diagram of the section structure of loudspeaker in Fig. 2；
Fig. 4 is the partial enlarged view in Fig. 3 at A；
Fig. 5 is the partial enlarged view in Fig. 3 at A, wherein non-installation center short-circuited conducting sleeve and side short-circuited conducting sleeve；
Fig. 6 is the configuration schematic diagram of loudspeaker in Fig. 2；
Fig. 7 is the structural schematic diagram of center washer in Fig. 3；
Fig. 8 is the structural schematic diagram of side washer in Fig. 3；
Fig. 9 is the structural schematic diagram of frame in Fig. 3；
Figure 10 is the structural schematic diagram of Voice coil assemblies in Fig. 3；
Figure 11 is the schematic diagram of the section structure of Voice coil assemblies in Figure 10；
Figure 12 is the structural schematic diagram of another embodiment of loudspeaker of the present invention；
Figure 13 is the structural schematic diagram of the another embodiment of loudspeaker of the present invention；
Figure 14 is the structural schematic diagram of loudspeaker another embodiment of the present invention；
Figure 15 is the structural schematic diagram of the 5th embodiment of loudspeaker of the present invention；
Figure 16 is the structural schematic diagram of other a part of the embodiment of loudspeaker of the present invention；
Figure 17 is the structural schematic diagram of other another part embodiments of loudspeaker of the present invention.
Drawing reference numeral explanation:
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that if relating to directionality instruction (such as up, down, left, right, before and after ...) in the embodiment of the present invention,
Then directionality instruction be only used for explain under a certain particular pose (as shown in the picture) between each component relative positional relationship,
Motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, being somebody's turn to do " first ", " second " etc. if relating to the description of " first ", " second " etc. in the embodiment of the present invention
Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill
The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy
Sign.In addition, the meaning of the "and/or" occurred in full text is, and including three schemes arranged side by side, by taking " A and/or B " as an example, including A
The scheme that scheme or B scheme or A and B meet simultaneously.In addition, the technical solution between each embodiment can be combined with each other,
It but must be based on can be realized by those of ordinary skill in the art, when conflicting or nothing occurs in the combination of technical solution
Method realize when will be understood that the combination of this technical solution is not present, also not the present invention claims protection scope within.
The present invention proposes a kind of loudspeaker.
In an embodiment of the present invention, as shown in Fig. 1-5,9 and 10, the loudspeaker 100 includes:
Frame 20；
Magnetic circuit system；It is installed on frame 20, the magnetic circuit system has a magnetic circuit gap 30；And
Vibrational system, including vibrating diaphragm 10 and Voice coil assemblies 40, the vibrating diaphragm 10 are installed on frame 20, the Voice coil assemblies 40
Speech coil framework 41 and the voice coil portion 42 of vibrating diaphragm 10 are installed on including one end, the voice coil portion 42 is mounted on speech coil framework 41, institute
It states voice coil portion 42 to protrude into the magnetic circuit gap 30, the voice coil portion 42 includes spaced first voice coil portion 421 and second
Voice coil portion 422 is vacant area 423 between first voice coil portion 421 and the second voice coil portion 422.
Wherein, as shown in Figures 9 and 10, the length of first voice coil portion 421 and the second voice coil portion 422 in speech coil framework 41
It is spaced apart on direction；The vacant area 423 is between the first voice coil portion 421 and the second voice coil portion 422, in vacant area 423
Not set voice coil portion, i other words vacant area 423 will be divided into the first voice coil portion 421 and the second voice coil portion 422 between voice coil portion 42.
Specifically, gap magnetic field is formed in the magnetic circuit gap 30, for driving voice coil portion 42 that vibrating diaphragm 10 is driven to shake
It is dynamic.In Fig. 3, the Voice coil assemblies 40 are suspended on the lower section of vibrating diaphragm 10.
Specifically, the magnetic circuit system has a magnetic circuit gap 30, first voice coil portion 421 and the second voice coil portion 422
Moved in the magnetic circuit gap 30.
Specifically, the vibrating diaphragm 10 at least may include following vibration processes when loudspeaker 100 works:
1) in Fig. 3, during the vibrating diaphragm 10 vibrates upwards, when first voice coil portion 421 is detached from magnetic circuit gap
After 30, the second voice coil portion 422 still in magnetic circuit gap 30, and can be driven under the action of gap magnetic field the second voice coil portion 422 after
It is continuous that vibrating diaphragm 10 is driven to move upwards, it can so increase the peak value that voice coil portion 42 moves upwards, be detached to can avoid voice coil portion 42
Magnetic circuit gap 30 and make harmonic distortion.
2) in Fig. 3, during the vibration downwards of vibrating diaphragm 10, when second voice coil portion 422 is detached from magnetic circuit gap
After 30, the first voice coil portion 421 still in magnetic circuit gap 30, and can be driven under the action of gap magnetic field the first voice coil portion 421 after
It is continuous that vibrating diaphragm 10 is driven to move downward, it can so increase the peak value that voice coil portion 42 moves downward, be detached to can avoid voice coil portion 42
Magnetic circuit gap 30 and make harmonic distortion.
It is appreciated that loudspeaker 100 of the present invention, is spaced apart 421 He of the first voice coil portion by setting voice coil portion 42 to
Second voice coil portion 422, it is possible to increase effective voice coil winding in voice coil portion 42, so as to improve the symmetry and line of vibrational system vibration
Property, so as to reduce harmonic distortion.
It should be strongly noted that in the related technology, voice coil portion 42 is usually arranged as one section；In this way, if 42 mistake of voice coil portion
It is long, then it can make the heavier-weight of Voice coil assemblies 40, to will affect the sensitivity of loudspeaker 100；If voice coil portion 42 is too short,
During the work time, voice coil portion 42 is easily separated from magnetic circuit gap 30 to loudspeaker 100, to easily cause the non-thread of loudspeaker 100
Property distortion.
And loudspeaker 100 of the present invention, by the way that an equal voice coil portion 42 interval of overall length is divided into two sections of voice coil portions 42 (i.e.
First voice coil portion 421 and the second voice coil portion 422), it can increase in the case where not increasing or not increasing by 40 weight of Voice coil assemblies substantially
Effective voice coil winding in big voice coil portion 42, so as to be effectively improved vibrational system in the case where guaranteeing 100 sensitivity of loudspeaker
The symmetry of vibration and linear, to reduce harmonic distortion.
Further, as in Figure 3-5, the magnetic circuit gap 30 including first segment 31 and is connected to first segment 31
The second segment 32 and third section 33 at both ends, the corresponding vacant area 423 of the first segment 31 are arranged, and the width of the first segment 31 is greater than
The width of second segment 32 and third section 33.
Wherein, the width in the magnetic circuit gap 30 refers to that radial width, the length in the magnetic circuit gap 30 refer to axial length
Degree.
Wherein, first voice coil portion 421 is located at second segment 32, and second voice coil portion 422 is located at third section 33.
In this way, by the way that the width of 30 middle section of magnetic circuit gap is increased, it is possible to increase voice coil portion 42 transports in gap magnetic field
BL symmetry when dynamic on 30 length direction of magnetic circuit gap and linear, so as to further improve pair of vibrational system vibration
Title property and linear, to reduce harmonic distortion.
Further, as in Figure 3-5, the middle section of the first segment 31 is arranged close to the middle section in vacant area 423.
That is, vibrating diaphragm 10 in the raw when, the middle section of the first segment 31 is arranged close to the middle section in vacant area 423.
Wherein, the middle section of the first segment 31 refers to, perpendicular to length direction (the i.e. upper and lower in Fig. 3 of first segment 31
To) and cross first segment 31 mid-length section；The middle section in the vacant area 423 refers to the length perpendicular to vacant area 423
It spends direction (i.e. up and down direction in Fig. 3) and crosses the section of the mid-length of first segment 31.
In this way, can further increase BL symmetry when voice coil portion 42 moves in gap magnetic field and linear.
Optionally, the middle section of the first segment 31 is coplanar with the middle section in vacant area 423.
Further, as in Figure 3-5, the length in first voice coil portion 421 is equal to the length in the second voice coil portion 422.
In this way, the design difficulty of loudspeaker 100 can be not only reduced, moreover, being conducive to the symmetry for further improving vibrational system vibration
With it is linear, to reduce harmonic distortion.
It should be pointed out that in the actual production process, the length in first voice coil portion 421 and the second voice coil portion 422
Length allow that there are errors.
Further, the ratio between the length in the vacant area 423 and the length in the first voice coil portion 421 is greater than or equal to
0.2.So, it is ensured that the present invention has obvious effect.
If being appreciated that, the ratio between the length in vacant area 423 and the length in the first voice coil portion 421 is too small, can make
The length in vacant area 423 is too small, then the increment value of the effective voice coil winding in voice coil portion 42 can be made not unobvious, to can make this hair
Bright effect is unobvious.
Further, the ratio between the length in the vacant area 423 and the length in the first voice coil portion 421 is less than or equal to
1。
It is appreciated that the ratio between the length in the vacant area 423 and the length in the first voice coil portion 421 is bigger, it is described
The length in vacant area 423 is longer, and in nature, first voice coil portion 421 and the second voice coil portion 422 are located at magnetic circuit gap
30 part is fewer, if the ratio is excessive, the length in vacant area 423 can be made excessive, then can make the first voice coil portion 421 and second
The part that voice coil portion 422 is located at magnetic circuit gap 30 is very few, even without then will affect the symmetry and line of vibrational system vibration
Property.
In the present embodiment, optionally, the ratio between the length in the vacant area 423 and the length in the first voice coil portion 421
Value is greater than or equal to 0.3, and is less than or equal to 0.8.
In a particular embodiment, the length in the vacant area 423 can be according to the size of loudspeaker 100, the ruler of magnetic circuit system
The many factors such as very little and Voice coil assemblies 40 sizes are set or adjusted.
In the present embodiment, according to the specification of existing loudspeaker 100, the length in the vacant area 423 be chosen as being greater than or
Equal to 2 millimeters, and it is less than or equal to 10 millimeters.Specifically, can according to the actual situation or limited trials and voluntarily adjust.
In other embodiments of the invention, the length of the length in first voice coil portion 421 and the second voice coil portion 422
It is settable unequal.For example, the ratio of first voice coil portion 421 length and 422 length of the second voice coil portion, equal or approximate to etc.
In 32 length of second segment in magnetic circuit gap 30 and the ratio of 33 length of third section.Optionally, 31 length of first segment and second
Ratio between 32 length of section, equal or approximately equal to controls the ratio of section length and 421 length of the first voice coil portion.In this way,
Effective voice coil winding in voice coil portion 42 can be increased, and the symmetry of vibrational system vibration and linear can be improved, it is humorous so as to reduce
Wave distortion.
In a particular embodiment, first voice coil portion 421 and the second voice coil portion 422 can be coiled by same root coiling；Or
Person, first voice coil portion 421 and the second voice coil portion 422 can be coiled by different coilings respectively, and first voice coil portion 421
It is electrically connected with the second voice coil portion 422.
In a particular embodiment, as shown in Fig. 3-5,12,13, by magnetic circuit gap 30 be divided into first segment 31, second segment 32 and
The mode of third section 33 has very much, is hereafter illustrated.
Further, as in Figure 3-5, the medial surface in the magnetic circuit gap 30 sets to the concave to form inner groove 34, described
The outside in magnetic circuit gap 30 faces out recessed formation outer groove 35, and the corresponding outer groove 35 of the inner groove 34 is arranged, so that described
Magnetic circuit gap 30 is divided into first segment 31, second segment 32 and third section 33.
In this way, the uniformity and symmetry of gap magnetic field can be increased.
Further, as in Figure 3-5, the loudspeaker 100 further includes center short-circuited conducting sleeve 36 and/or side short-circuited conducting sleeve 37,
The center short-circuited conducting sleeve 36 is installed on inner groove 34, and/or, the side short-circuited conducting sleeve 37 is installed on outer groove 35.
In this way, the inductance of 100 system of loudspeaker can be reduced by the short circuit of setting center and/or side short-circuited conducting sleeve 37, so as to
Further decrease harmonic distortion.Moreover, being existed by being arranged center short-circuited conducting sleeve 36 in inner groove 34 through the setting of side short-circuited conducting sleeve 37
In outer groove 35, it may make that loudspeaker 100 is ingenious in design, reasonable.
In the second embodiment in the magnetic circuit gap 30, as shown in figure 13, the inside in the magnetic circuit gap 30 is inward-facing
Recessed formation inner groove 34, so that magnetic circuit gap 30 is divided into first segment 31, second segment 32 and third section 33.In this way, the inner ring
Magnetic circuit gap 30 can be divided into first segment 31, second segment 32 and third section 33 by slot 34.
In this embodiment, optionally, as shown in figure 13, the loudspeaker 100 further includes center short-circuited conducting sleeve 36, it is described in
Heart short-circuited conducting sleeve 36 is installed on inner groove 34.In this way, the inductance of 100 system of loudspeaker can be reduced.
In the 3rd embodiment in the magnetic circuit gap 30, as shown in figure 12, the outside in the magnetic circuit gap 30 is faced out
Recessed formation outer groove 35, so that magnetic circuit gap 30 is divided into first segment 31, second segment 32 and third section 33.In this way, the outer ring
Magnetic circuit gap 30 can be divided into first segment 31, second segment 32 and third section 33 by slot 35.
In this embodiment, optionally, as shown in figure 12, the loudspeaker 100 further includes side short-circuited conducting sleeve 37, and the side is short
Road ring 37 is installed on outer groove 35.In this way, the inductance of 100 system of loudspeaker can be reduced.
In a particular embodiment, as shown in Fig. 3-5 and 12-17, the configuration formula of the magnetic circuit system has very much, hereafter will
Several be illustrated is enumerated in conjunction with the generation type in magnetic circuit gap 30；It should be noted that the structure type of the magnetic circuit system
It is including but not limited to following several.
Further, as seen in figures 3-6, the magnetic circuit system includes lower clamp plate 50, and is mounted on lower clamp plate 50
Heart magnetic circuit 60 and side magnetic circuit 90, the center magnetic path 60 include the centring magnet 61 set on 50 upper surface of lower clamp plate, the side magnetic
Road 90 includes the side magnet 91 set on 50 upper surface of lower clamp plate, and the side magnet 91 is set to the side of centring magnet 61；In described
Magnetic circuit gap 30 is formed between heart magnetic circuit 60 and side magnetic circuit 90.
Wherein, the centring magnet 61 and side magnet 91 are permanent magnet, and the centring magnet 61 both can be by natural
Magnetite be made, can also be made of artificial magnet's steel；Likewise, the side magnet 91 can both be made of natural magnetite, it can also
It is made of artificial magnet's steel.
Wherein, the lower clamp plate 50 has poly- magnetic, magnetic conduction effect.Optionally, the lower clamp plate 50 is set as magnetic conductive board.
Specifically, the centring magnet 61 and side magnet 91 form gap magnetic field in magnetic circuit gap 30, for driving sound
Coil assembly 40 drives vibrating diaphragm 10 to vibrate.
Loudspeaker 100 of the present invention is appreciated that, by setting centring magnet 61 and side magnet 91, in gapped magnetic field shape
At gap magnetic field, it can not only increase the magnetic flux of gap magnetic field, to provide bigger driving force；More importantly may be used also
It even is eliminated influence of the magnetic circuit system self structure component to gap magnetic field to reduce, so as to improve 30 internal clearance of magnetic circuit gap
The symmetry in magnetic field, so that and then harmonic wave can be further decreased further such that speaker system inductance has preferably linear
Distortion.
Based on above-mentioned magnetic structure, in a particular embodiment, the structure type in the magnetic circuit gap 30 has very much, hereafter will
Enumerate several be illustrated；It should be noted that the structure type in the magnetic circuit gap 30 includes but is not limited to following several.
Further, as seen in figures 3-6, the center magnetic path 60 further includes the center China set on 61 upper surface of centring magnet
Department 62, the side washer 92 of 91 upper surface of magnet when magnetic circuit 90 further includes being set to, the side washer 92 are set to center washer
62 side, to form magnetic circuit gap 30.
Wherein, the center washer 62 and side washer 92 all have poly- magnetic, magnetic conduction effect, for increasing gap magnetic field
Magnetic flux；The center washer 62 can also claim center magnetic conductive board, and Bian Huasi 92 can also claim side magnetic conductive board.
In this way, by setting center washer 62 and side washer 92, to form magnetic between center washer 62 and side washer 92
The uniformity and symmetry of gap magnetic field can be improved, so as to further reduce harmonic distortion in road gap 30.
Further, the side magnet 91 is set as annular.In this way, being not only convenient for installation side magnet 91, it is also ensured that
The magnetic flux in gap magnetic field.
Further, the side washer 92 is set as annular.In this way, being not only convenient for installation side washer 92, it is also ensured that
The magnetic flux and uniformity in gap magnetic field.
Further, as in Figure 3-5, the width in the magnetic circuit gap 30 is less than between side magnet 91 and centring magnet 61
Spacing.
Wherein, the width in the magnetic circuit gap 30 refers to radial width, between the side magnet 91 and centring magnet 61
Spacing refers to the radial distance between the medial surface of side magnet 91 and the lateral surface of centring magnet 61.
In this way, can be conducive to improve the uniformity and symmetry in the up-down direction of gap magnetic field.
Specifically, as in Figure 3-5, the lateral surface of the lateral surface protrusion centring magnet 61 of the center washer 62；Meanwhile
The medial surface in washer 92 it is inwardly projecting in while magnet 91 lateral surface.
Further, as in Figure 3-5, the middle section of the side washer 92 is arranged close to the middle section of center washer 62.
Wherein, the middle section of the side washer 92 refers to, the thickness direction (i.e. up and down direction) perpendicular to side washer 92 and
Cross the section at 92 thickness midpoint of side washer；The middle section of the center washer 62 refers to, perpendicular to the thickness side of center washer 62
To (i.e. up and down direction) and the section at 62 thickness midpoint of center washer excessively.
Further, the middle section of the side washer 92 is coplanar with the middle section of center washer 62.In actual operation, permit
Permitted that there are errors.
Further, the thickness of the side washer 92 is equal with the thickness of center washer 62, the centring magnet 61 and side
The thickness of magnet 91 is also equal；So that the middle section of side washer 92 is coplanar with the middle section of center washer 62.
Further, as in Figure 3-5, the lateral surface of the center washer 62 sets to the concave to form inner groove 34, described
The inside of side washer 92 faces out recessed formation outer groove 35, and the corresponding outer groove 35 of the inner groove 34 is arranged.
Wherein, the lateral surface of the center washer 62 is the medial surface in magnetic circuit gap 30, the inside of the side washer 92
Face is the lateral surface in magnetic circuit gap 30.
In this way, magnetic circuit gap 30 can be divided into first segment 31, second segment 32 and third by the inner groove 34 and outer groove 35
Section 33.
In a particular embodiment, the center washer 62 can both be integrally formed, as shown in figure 17；Or
Multiple sub- washer fissions assemble, as shown in Fig. 3 etc..
Further, the difficulty of processing of the center washer 62 and convenience, the center washer 62 are assembled in order to balance
Optionally assembled by two sub- washers.Specifically, the center washer 62 includes setting as shown in Fig. 3-6 and 13,16
In the first sub- washer 621 of 61 upper surface of centring magnet and the second sub- washer 622 set on the first sub- 621 upper surface of washer.
Further, as shown in Fig. 3-5 and 7, the inner groove 34 includes set on the of the upper end of the first sub- washer 621
One pilot trench 341 and the second pilot trench 342 set on the lower end of the first sub- washer 621, first pilot trench 341 and the second pilot trench 342
Cooperatively form inner groove 34.Specifically, first pilot trench 341 is set to the medial surface of the first sub- washer 621 and through the first son
The upper surface of washer 621, second pilot trench 342 are set to the medial surface of the second sub- washer 622 and run through the second sub- washer 622
Lower surface.
In the second embodiment of the inner groove 34, as shown in figure 16, the inner groove 34 is opened in the first sub- washer
621 upper end, and run through the upper surface of the first sub- washer 621, the lower surface of the second sub- washer 622 and the first sub- washer
621 enclose inner groove 34.
In the 3rd embodiment of the inner groove 34, the inner groove 34 is opened in the lower end of the second sub- washer 622, and
Through the lower surface of the second sub- washer 622, the upper surface of the first sub- washer 621 and the second sub- washer 622 enclose inner ring
Slot 34.
In a particular embodiment, the side washer 92 can both be integrally formed, as shown in figure 17；Or it is more
A sub- washer fission assembles, as shown in Fig. 3 etc..
Further, the difficulty of processing of the side washer 92 and convenience is assembled in order to balance, the side washer 92 is optional
Ground is assembled by two sub- washers.Specifically, as shown in Fig. 3-6 and 13,16, the magnetic when washer 92 includes being set to
The sub- washer 921 of the third of 91 upper surface of iron and the 4th sub- washer 922 set on sub- 921 upper surface of washer of third.
Further, as shown in Fig. 3-5 and 8, the outer groove 35 includes set on the of the upper end of the sub- washer 921 of third
Three pilot trench 351 and the 4th pilot trench 352 set on the lower end of the 4th sub- washer 922, the third pilot trench 351 and the 4th pilot trench 352
Cooperatively form inner groove 34.Specifically, the third pilot trench 351 is set to the medial surface of the sub- washer 921 of third and through third
The upper surface of washer 921, the 4th pilot trench 352 are set to the medial surface of the 4th sub- washer 922 and run through the 4th sub- washer 922
Lower surface.
In the second embodiment of the outer groove 35, as shown in figure 16, the outer groove 35 is opened in the sub- washer of third
921 upper end, and run through the upper surface of the sub- washer 921 of third, the lower surface of the 4th sub- washer 922 and the sub- washer of third
921 enclose outer groove 35.
In the 3rd embodiment of the outer groove 35, the outer groove 35 is opened in the lower end of the 4th sub- washer 922, and
Through the lower surface of the 4th sub- washer 922, the upper surface of the sub- washer 921 of third and the 4th sub- washer 922 enclose outer ring
Slot 35
In another embodiment of the invention, as shown in figure 12, it is described while magnetic circuit 90 further include be set to while magnet 91 on table
The side washer 92 in face, the side washer 92 form magnetic circuit gap 30 with 61 upper end of centring magnet.
In this embodiment, specifically, the inside of the side washer 92 faces out recessed formation outer groove 35, the outer ring
Magnetic circuit gap 30 is divided into first segment 31, second segment 32 and third section 33 by slot 35.
In this embodiment, specifically, the structure in washer 92 can refer to the while washer 92 in above embodiments
Structure does adaptation adjustment, need not be described in detail herein.
In another embodiment of the present invention, as shown in figure 13, the center magnetic path 60 further includes being set to centring magnet 61
The center washer 62 of upper surface, the center washer 62 form magnetic circuit gap 30 with 91 upper end of side magnet.
In this embodiment, described interior specifically, the lateral surface of the center washer 62 sets to the concave to form inner groove 34
Magnetic circuit gap 30 is divided into first segment 31, second segment 32 and third section 33 by annular groove 34.
In this embodiment, specifically, the structure of the center washer 62 can refer to the center washer in above embodiments
62 structure does adaptation adjustment, need not be described in detail herein.
In one more embodiment of the present invention, as shown in figure 14, the magnetic circuit system include U iron 66 and be set to U iron 66
Interior center magnetic path 60 forms magnetic circuit gap 30 between the center magnetic path 60 and the side wall of U iron 66.
Wherein, the U iron 66 is magnetic conductive part, has the function of poly- magnetic, magnetic conduction.
In this embodiment, optionally, as shown in figure 14, the center magnetic path 60 includes the master set gradually from bottom to top
Magnet 63, the first washer 64 and secondary magnet 65；Magnetic circuit gap 30 is formed between first washer 64 and the side wall of U iron 66.Tool
Body, the main magnet 63 is installed on the bottom wall of U iron 66, and the first washer 64 is installed on main magnet 63, and secondary magnet 65 is installed on
One washer 64.
In this embodiment, optionally, the settable inner groove 34 of the lateral surface of first washer 64, structure type can
Referring to the center washer 62 in above-described embodiment structure type or do adaptation adjustment, need not be described in detail herein.
In this embodiment, optionally, the settable outer groove 35 of the side wall inner wall of the U iron 66, structure type can
Referring to the side washer 92 in above-described embodiment structure type or do adaptation adjustment, need not be described in detail herein.It should be noted that U
The side wall of iron 66 can also split settings.
Certainly, in this embodiment, the center magnetic path 60 may be arranged as other structures form, herein need not be one by one
It repeats.
In the fifth embodiment of the present invention, as shown in figure 15, the magnetic circuit system includes T iron 901 and is set to T iron
The side magnetic circuit 90 of 901 column side forms magnetic circuit gap 30 between the column and side magnetic circuit 90 of the T iron 901.
Wherein, the T iron 901 is magnetic conductive part, has the function of poly- magnetic, magnetic conduction.
In this embodiment, optionally, as shown in figure 15, the magnet 91 when magnetic circuit 90 is set gradually from bottom to top
With side washer 92, magnetic circuit gap 30 is formed between the side washer 92 and the column front end of T iron 901.Specifically, the side magnetic
Iron 91 is installed on the bottom plate of T iron 901, and Bian Huasi 92 is installed on side magnet 91, and the front end of side magnet 91 is installed on frame
20 bottoms.
In this embodiment, optionally, as shown in figure 15, the settable outer groove 35 of the medial surface of the side washer 92,
Structure type can refer to the structure type of the side washer 92 in above-described embodiment or do adaptation adjustment, need not be described in detail herein.
In this embodiment, optionally, as shown in figure 15, the settable inner groove of lateral surface of the column of the T iron 901
34, structure type can refer to the structure type of the center washer 62 in above-described embodiment or do adaptation adjustment, herein need not be detailed
It states.It should be noted that the column of T iron 901 can also split settings.
In a particular embodiment, the magnetic circuit system both may be mounted in frame 20；It is may be mounted in frame 20 again,
Or it is partially installed on outside frame 20.
In example of the invention, as shown in Fig. 3,12-17, the magnetic circuit system is mounted in frame 20.Specifically,
The lower member (such as bottom wall of lower clamp plate 50, the bottom plate of T iron 901 or U iron 66) of the magnetic circuit system is mounted on the bottom of frame 20
Portion；In this way, the frame 20 can protect magnetic circuit system, by the way that magnetic circuit system to be mounted in frame 20 to avoid magnetic
It is damaged other than the system of road, so as to be conducive to improve the service life of loudspeaker 100.
Specifically, such as, shown in 3 and 9, the frame 20 includes bottom wall (figure is not marked) and encloses set on the bottom wall periphery
Side wall (figure is not marked), the lower clamp plate 50 is mounted on bottom wall.Optionally, lower member (such as lower clamp plate of the magnetic circuit system
50, the bottom wall of the bottom plate of T iron 901 or U iron 66) bottom wall can be connected to by the modes such as screw lock adhering arrangement or splicing.
When the magnetic circuit system be mounted on frame 20 it is outer when, optionally, 20 bottom of frame offer avoid holes (figure not
Show), the upper end (or upper end of 66 side wall of U iron) of the side magnetic circuit 90 is connected to the bottom of frame 20, and the Voice coil assemblies 40 pass through
The evacuation via hole protrudes into magnetic circuit gap 30.
Further, as shown in figure 3, the vibrating diaphragm 10 include ring 11 and cone basin 12, the top edge of the cone basin 12 with
The inward flange of ring 11 connects.
Specifically, ring 11 is suspention connector, the inward flange of the ring 11 is mounted in frame 20, by vibrating diaphragm 10
It is mounted in frame 20；The cone basin 12 is main sounding device, and the lower ora terminalis of the cone basin 12 surrounds opening, to form vibrating diaphragm
10 opening.The ring 11 can refer to the structure of related vibrating diaphragm 10 to the structure of cone basin 12, need not be described in detail herein.
Further, as shown in Fig. 3 and 6 etc., the loudspeaker 100 can also include centring disk 80.
Specifically, the centring disk 80 is circular ring shape, the flake knot with bending fluctuating as shown in Fig. 3 and 6 etc.
Structure.The centring disk 80 is mounted in the frame 20, and the outer edge of the centring disk 80 is fixedly connected with frame 20,
Inward flange is connected with speech coil framework 41.The centring disk 80 is used to stablize the vibrational state of speech coil framework 41, makes speech coil framework
41 stable edges are vibrated perpendicular to the direction of gap magnetic field.
Disclosure above according to the present invention, it would have readily occurred to a person skilled in the art that, can according to actual needs or design
It needs, the part of three parts or more will be divided between voice coil portion 42；For example, the voice coil portion 42 divides for three parts, that is, the sound
Circle portion 42 further include with 421 spaced third voice coil portion (not shown) of the first voice coil portion, third voice coil portion is located at institute
State the first voice coil portion 421 far from the second voice coil portion 422 side, when magnetic circuit gap 30 include first segment 31, second segment 32 and
When third section 33, first voice coil portion 421 optionally corresponds to the setting of first segment 31；In this way, having for voice coil portion 42 also can be improved
Imitate voice coil winding.
It should be noted that optionally, those skilled in the art can root when being divided into more parts between the voice coil portion 42
Suitable number of segmentation is set by magnetic circuit gap 30 according to actual conditions or limited trials.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (13)
1. a kind of loudspeaker characterized by comprising
Frame；
Magnetic circuit system；It is installed on the frame, the magnetic circuit system has a magnetic circuit gap；And
Vibrational system, including vibrating diaphragm and Voice coil assemblies, the vibrating diaphragm are installed on the frame, and the Voice coil assemblies include one end peace
Speech coil framework and voice coil portion loaded on the vibrating diaphragm, the voice coil portion protrude into the magnetic circuit gap, between the voice coil portion includes
It is vacant area between first voice coil portion and the second voice coil portion every the first voice coil portion and the second voice coil portion of setting.
2. loudspeaker as described in claim 1, which is characterized in that the magnetic circuit gap includes first segment and is connected to
The second segment and third section at the first segment both ends, the first segment correspond to vacant area's setting, the width of the first segment
Greater than the width of the second segment and third section.
3. loudspeaker as claimed in claim 2, which is characterized in that the middle section of the first segment is in the vacant area
Section setting.
4. loudspeaker as claimed in claim 2, which is characterized in that the medial surface in the magnetic circuit gap sets to the concave to form inner ring
Slot, so that the magnetic circuit gap is divided into the first segment, the second segment and the third section；Alternatively,
Recessed formation outer groove is faced out on the outside of the magnetic circuit gap, so that the magnetic circuit gap is divided into the first segment, institute
State second segment and the third section；Or
The medial surface in the magnetic circuit gap sets to the concave to form inner groove, faces out outside recessed formation on the outside of the magnetic circuit gap
Annular groove, the inner groove correspond to outer groove setting so that the magnetic circuit gap be divided into the first segment, the second segment,
And the third section.
5. loudspeaker as claimed in claim 4, which is characterized in that the loudspeaker further includes center short-circuited conducting sleeve, the center
Short-circuited conducting sleeve is installed on the inner groove；Or
The loudspeaker further includes side short-circuited conducting sleeve, and the side short-circuited conducting sleeve is installed on the outer groove；Or
The loudspeaker further includes center short-circuited conducting sleeve and side short-circuited conducting sleeve, and the center short-circuited conducting sleeve is installed on the inner groove, described
Side short-circuited conducting sleeve is installed on the outer groove.
6. the loudspeaker as described in any one of claim 1 to 5, which is characterized in that the length etc. in first voice coil portion
Length in second voice coil portion.
7. loudspeaker as claimed in claim 6, which is characterized in that the length in the vacant area and the length in first voice coil portion
Ratio between degree is greater than or equal to 0.2, and is less than or equal to 1；And/or
The length in the vacant area is greater than or equal to 2 millimeters, and is less than or equal to 10 millimeters.
8. the loudspeaker as described in any one of claim 1 to 5, which is characterized in that first voice coil portion and the second sound
Circle portion is coiled by same root coiling；Or
First voice coil portion and the second Voice coil portions are not coiled by different coilings；First voice coil portion and the second voice coil portion
Electrical connection.
9. the loudspeaker as described in any one of claim 1 to 5, which is characterized in that the magnetic circuit system includes lower clamp plate,
And it is mounted on center magnetic path and side magnetic circuit on the lower clamp plate, the center magnetic path includes being set to the lower clamp plate upper surface
Centring magnet, the magnet when magnetic circuit includes being set to the lower clamp plate upper surface, the side magnet are set to the center magnetic
The side of iron；The magnetic circuit gap is formed between the center magnetic path and side magnetic circuit.
10. loudspeaker as claimed in claim 9, which is characterized in that the center magnetic path further includes being set to the centring magnet
The center washer of upper surface, the center washer and side magnet upper end form the magnetic circuit gap；Or
The side washer of the magnet upper surface when magnetic circuit further includes being set to described, the side washer and the centring magnet upper end
Form the magnetic circuit gap；Or
The center magnetic path further includes the center washer set on the centring magnet upper surface, and the side magnetic circuit further includes being set to institute
The while washer in magnet upper surface is stated, the side washer is set to the side of the center washer, to form the magnetic circuit gap.
11. loudspeaker as claimed in claim 10, which is characterized in that in the lateral surface of the center washer sets to the concave and to be formed
Annular groove；Or
Recessed formation outer groove is faced out on the inside of the side washer；Or
The lateral surface of the center washer sets to the concave to form inner groove, and recessed formation outer ring is faced out on the inside of the side washer
Slot, the inner groove correspond to the outer groove setting.
12. loudspeaker as claimed in claim 11, which is characterized in that the center washer includes being set on the centring magnet
The sub- washer of the first of surface and the second sub- washer set on the described first sub- washer upper surface, the inner groove are opened in described
The upper end of one sub- washer, and run through the upper surface of the described first sub- washer, the lower surface and described first of the second sub- washer
Sub- washer encloses the inner groove；Alternatively, the inner groove is opened in the lower end of the described second sub- washer, and through described the
The lower surface of two sub- washers, the upper surface of the first sub- washer and the described second sub- washer enclose inner groove；Alternatively, described
Inner groove includes set on the first pilot trench of the upper end of the described first sub- washer and set on the second of the lower end of the described first sub- washer
Pilot trench, first pilot trench and the second pilot trench cooperatively form the inner groove；And/or
It is described while washer include set on it is described while magnet upper surface the sub- washer of third and be set to the sub- washer upper surface of the third
The 4th sub- washer, the outer groove is opened in the upper end of the sub- washer of the third, and runs through the upper table of the sub- washer of the third
Face, the lower surface of the 4th sub- washer and the sub- washer of the third enclose the outer groove；Alternatively, the outer groove opens up
In the lower end of the 4th sub- washer, and run through the 4th sub- washer lower surface, the upper surface of the sub- washer of third with
The 4th sub- washer encloses the outer groove；Alternatively, the outer groove includes set on the upper end of the sub- washer of the third
Third pilot trench and the 4th pilot trench set on the lower end of the 4th sub- washer, the third pilot trench and the 4th pilot trench cooperatively form
The inner groove.
13. the loudspeaker as described in any one of claim 1 to 5, which is characterized in that the magnetic circuit system include U iron, with
And the center magnetic path in the U iron, the magnetic circuit gap is formed between the center magnetic path and the side wall of the U iron；Or
Person
The magnetic circuit system include T iron and be set to the T iron column side side magnetic circuit, the column of the T iron with it is described
The magnetic circuit gap is formed between the magnetic circuit of side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811653606.XA CN109462806B (en) | 2018-12-29 | 2018-12-29 | Loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811653606.XA CN109462806B (en) | 2018-12-29 | 2018-12-29 | Loudspeaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109462806A true CN109462806A (en) | 2019-03-12 |
| CN109462806B CN109462806B (en) | 2024-02-09 |
Family
ID=65615939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811653606.XA Active CN109462806B (en) | 2018-12-29 | 2018-12-29 | Loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109462806B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021120099A1 (en) * | 2019-12-19 | 2021-06-24 | 瑞声声学科技(深圳)有限公司 | Sound generation device |
| WO2024022484A1 (en) * | 2022-07-28 | 2024-02-01 | 潍坊歌尔丹拿电子科技有限公司 | Sound production apparatus and terminal device |
| WO2024022489A1 (en) * | 2022-07-28 | 2024-02-01 | 潍坊歌尔丹拿电子科技有限公司 | Sound production apparatus and terminal device |
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| US20070147651A1 (en) * | 2005-12-21 | 2007-06-28 | Pioneer Corporation | Speaker device and mobile phone |
| CN101365255A (en) * | 2007-08-07 | 2009-02-11 | 吴少豪 | Loudspeaker |
| CN102333270A (en) * | 2011-07-15 | 2012-01-25 | 瑞声声学科技(深圳)有限公司 | Sounder |
| CN203399282U (en) * | 2013-09-03 | 2014-01-15 | 惠州超声音响有限公司 | Reverse directional push-pull horn unit with novel structure |
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|---|---|---|---|---|
| CN2676555Y (en) * | 2004-02-13 | 2005-02-02 | 王永明 | Magneto-motive horn |
| US20070147651A1 (en) * | 2005-12-21 | 2007-06-28 | Pioneer Corporation | Speaker device and mobile phone |
| CN101365255A (en) * | 2007-08-07 | 2009-02-11 | 吴少豪 | Loudspeaker |
| CN102333270A (en) * | 2011-07-15 | 2012-01-25 | 瑞声声学科技(深圳)有限公司 | Sounder |
| CN203399282U (en) * | 2013-09-03 | 2014-01-15 | 惠州超声音响有限公司 | Reverse directional push-pull horn unit with novel structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021120099A1 (en) * | 2019-12-19 | 2021-06-24 | 瑞声声学科技(深圳)有限公司 | Sound generation device |
| WO2024022484A1 (en) * | 2022-07-28 | 2024-02-01 | 潍坊歌尔丹拿电子科技有限公司 | Sound production apparatus and terminal device |
| WO2024022489A1 (en) * | 2022-07-28 | 2024-02-01 | 潍坊歌尔丹拿电子科技有限公司 | Sound production apparatus and terminal device |
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| Publication number | Publication date |
|---|---|
| CN109462806B (en) | 2024-02-09 |
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