CN110418260B - Sound production monomer, sound production module and electronic terminal - Google Patents
Sound production monomer, sound production module and electronic terminal Download PDFInfo
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- CN110418260B CN110418260B CN201810720240.7A CN201810720240A CN110418260B CN 110418260 B CN110418260 B CN 110418260B CN 201810720240 A CN201810720240 A CN 201810720240A CN 110418260 B CN110418260 B CN 110418260B
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- 239000000178 monomer Substances 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title abstract description 13
- 239000004020 conductor Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 4
- 230000001755 vocal effect Effects 0.000 claims description 2
- 230000010287 polarization Effects 0.000 abstract description 9
- 230000035945 sensitivity Effects 0.000 description 6
- 230000006698 induction Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
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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
- H04R9/06—Loudspeakers
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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
- 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)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention discloses a sounding unit and a sounding module. The single body comprises a magnetic circuit system and a vibration system, wherein the magnetic circuit system comprises a magnetic yoke, a central magnetic circuit part and a side magnetic circuit part, the central magnetic circuit part and the side magnetic circuit part are arranged on the magnetic yoke, at least one of the central magnetic circuit part and the side magnetic circuit part comprises a permanent magnet, and a magnetic gap is formed between the central magnetic circuit part and the side magnetic circuit part; the vibration system comprises a vibration diaphragm, a voice coil and a centering support piece, wherein one end of the voice coil is connected to the vibration diaphragm, and the other end of the voice coil extends into the magnetic gap; the edge part of the diaphragm is fixed above the side magnetic circuit part; the projection of the diaphragm in the vibration direction is positioned in the outer contour range of the magnetic circuit system; the centering support piece comprises a fixed part fixed on the side magnetic circuit part, a vibrating part connected with the voice coil and a cantilever connecting the fixed part and the vibrating part. The sounding monomer does not need to be additionally provided with a shell, so that the development of miniaturization, lightness and thinness is facilitated. Through setting up the centering piece, can support vibration system effectively, reduce the sound production monomer and appear polarization.
Description
Technical Field
The invention relates to the technical field of electroacoustic conversion, in particular to a sounding monomer; the invention also relates to a sound production module and an electronic terminal applying the sound production monomer.
Background
A loudspeaker is an important acoustic component in electronic equipment, which is a transducer device that converts an electrical signal into an acoustic signal. The conventional speaker module includes a housing, and a magnetic circuit system and a vibration system disposed in the housing. The magnetic circuit of the speaker may be of a single magnetic circuit configuration, a double magnetic circuit configuration, a triple magnetic circuit configuration, or other configurations known to those skilled in the art.
Among them, the problem of polarization of moving-coil speakers has been a very difficult technical problem to solve. In order to solve the problem of polarization, a centering chip is usually disposed on the lower surface of the diaphragm. The centering branch piece is usually in the same place with the vibrating diaphragm laminating, and the centering branch piece is bonded between vibrating diaphragm and voice coil loudspeaker voice coil or vibrating diaphragm upside, and the setting degree of difficulty of centering branch piece is big.
Furthermore, existing sound emitting cells typically include a housing. The shell is positioned on the vibrating diaphragm, so that the volume of the sounding monomer is overlarge.
Disclosure of Invention
The invention aims to provide a new technical scheme of a sounding monomer.
According to a first aspect of the present invention, there is provided a sounding unit comprising a magnetic circuit system and a vibration system, wherein the magnetic circuit system comprises a yoke, and a central magnetic circuit portion and a side magnetic circuit portion which are arranged on the yoke, at least one of the central magnetic circuit portion and the side magnetic circuit portion comprises a permanent magnet, and a magnetic gap is formed between the central magnetic circuit portion and the side magnetic circuit portion;
the vibration system comprises a vibrating diaphragm, a voice coil and a centering support piece, wherein one end of the voice coil is connected to the vibrating diaphragm, and the other end of the voice coil extends into the magnetic gap;
wherein, the edge part of the diaphragm is fixed above the side magnetic circuit part;
the projection of the diaphragm in the vibration direction of the diaphragm is positioned in the outer contour range of the magnetic circuit system;
the centering support piece comprises a fixed part fixed on the side magnetic circuit part, a vibrating part connected with the voice coil and a cantilever connecting the fixed part and the vibrating part.
Optionally, the side magnetic circuit portion includes a side magnet and a side magnetic conductive plate disposed on an upper surface of the side magnet, and the edge portion of the diaphragm is fixed to the upper surface of the side magnetic conductive plate.
Optionally, a gasket is disposed on an edge of the upper surface of the side magnetic conductive plate, and an edge portion of the diaphragm is fixed to the gasket.
Optionally, the edge of the side magnetic conductive plate protrudes upward to be provided with a first flange, and the edge portion of the diaphragm is fixed to the first flange.
Optionally, the edge of the side magnetic conductive plate protrudes downward to be provided with a second flange, the outer edge of the magnetic yoke protrudes upward to be provided with a bent portion, the second flange and the bent portion are arranged oppositely, and the fixing portion is clamped between the second flange and the bent portion; the vibrating portion is connected with a free end of the voice coil.
Optionally, the vibrating portion, the fixing portion and the cantilever of the centering support are sealed and annular.
Alternatively, the central magnetic circuit portion has a rectangular structure as a whole, the side magnetic circuit portions are respectively disposed on four sides of the central magnetic circuit portion, and the two side magnetic circuit portions disposed on the short sides of the rectangular structure respectively penetrate through the annular inner portion of the centering branch piece.
Alternatively, the vibrating portion is fixed to an end surface of the free end or a side portion of the free end.
Optionally, the edge of the side magnetic conducting plate protrudes upward to be provided with a third flange, the edge of the gasket protrudes downward to be provided with a fourth flange, and the fixing portion is clamped between the third flange and the fourth flange; the vibration part is arranged between the vibrating diaphragm and the voice coil; or the vibration part is arranged on the side part of one end of the voice coil connected with the vibrating diaphragm.
Optionally, the damper is made of a conductive material, and the vibrating portion includes a first pad electrically connected to a voice coil lead of the voice coil.
Optionally, the centering branch chip comprises a second pad for electrical connection with an external circuit; the second pad is connected to the fixing portion along an outer side of the edge magnetic path portion.
Optionally, the second pad is disposed on a lower surface of the yoke.
Optionally, the number of the first bonding pads is two, one of the first bonding pads is connected with an incoming line end of a voice coil lead, and the other first bonding pad is connected with an outgoing line end of the voice coil lead; the number of the second bonding pads is two, and the two second bonding pads are connected with the two first bonding pads in a one-to-one correspondence mode.
Optionally, the voice coil is formed by winding two voice coil leads together, the incoming line ends of the two voice coil leads are electrically connected to the same first bonding pad, the outgoing line ends of the two voice coil leads are electrically connected to the same first bonding pad, and the first bonding pad electrically connected to the incoming line end is different from the first bonding pad electrically connected to the outgoing line end.
Optionally, the side magnetic plates have a projection extending towards the central magnetic circuit portion. Magnetic conductive plate
According to a second aspect of the invention, a sound module is provided, which comprises a module shell and the sound generating unit provided by the invention arranged in the module shell.
According to a third aspect of the present invention, there is provided an electronic terminal, comprising a terminal housing and a sounding unit mounted in the terminal housing, or a sounding module mounted in the terminal housing.
According to an embodiment of the disclosure, the sounding single body does not need to be additionally provided with a shell, so that the development of miniaturization and lightness is facilitated. Through setting up the centering piece, can support vibration system effectively, reduce the sound production monomer and appear polarization.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a cross-sectional view of a sound emitting cell according to the present invention.
Fig. 2 is a cross-sectional view of a portion of a sound emitting cell according to the present invention.
Fig. 3 is a top view of fig. 2.
Fig. 4 is a schematic view of the structure of the sound emitting unit according to the present invention.
Fig. 5 is a view from another angle of fig. 4.
Fig. 6 is a cross-sectional view of another sound generating unit according to the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Referring to fig. 1-3, the present invention provides a sound generating unit the sound generating unit of the present invention includes a magnetic circuit system and a vibration system. The magnetic circuit system may adopt a single magnetic circuit structure, a double magnetic circuit structure or a multi-magnetic circuit structure, which are well known to those skilled in the art. For example, in one embodiment of the present invention, the magnetic circuit system includes a yoke 1, and a center magnetic circuit portion and a side magnetic circuit portion provided on the yoke 1, at least one of the center magnetic circuit portion and the side magnetic circuit portion containing a permanent magnet, the center magnetic circuit portion and the side magnetic circuit portion forming a magnetic gap therebetween.
For example, the side magnetic path portion may be integrally formed with the yoke 1, which is a side wall portion formed at an edge of the yoke 1, and the central magnetic path portion may be a permanent magnet disposed in a central region of the yoke 1, which forms a magnetic gap of the magnetic path system with the side wall portion of the yoke 1.
Alternatively, the yoke 1 may have a plate-like structure or a basin-like structure, the central magnetic circuit portion includes a central magnet 2 mounted in a central region of the yoke 1, and the side magnetic circuit portion includes side magnets 3 disposed at lateral positions of the central magnet 2. Two side magnets 3 can be arranged; of course, four magnets may be provided, distributed around the center magnet 2, and the four side magnets 3 and the center magnet 2 form a magnetic gap of the magnetic circuit system. Referring to fig. 3, the four side magnets 3 enclose an approximately rectangular structure, and an opening is formed between two adjacent side magnets 3, so that the subsequent leading-out of the voice coil lead is facilitated.
Referring to fig. 1-2, in order to concentrate the magnetic flux lines of the magnetic circuit system in the vicinity of the magnetic gap, a central magnetic plate 4 may be provided on the upper surface of the central magnet 2, and the central magnetic plate 4 may be fixed to the central magnet 2 by, for example, adhesion. The upper surface of the edge magnet 3 can be provided with four edge magnetic conducting plates 5, and the four edge magnetic conducting plates 5 can be fixed on the four edge magnets 3 in an adhesive manner. Alternatively, the side magnetic conductive plates 5 may be bonded to the upper surfaces of the four side magnets 3 simultaneously, using an integrated ring structure.
Preferably, the side magnetic plates 5 have a projection 32 extending towards the portion near the central magnetic circuit. The projection 32 forms part of the magnetic gap with the central magnetically permeable plate 4. Gaps are formed between the projections 32 and the voice coil 7 and between the voice coil 7 and the central magnetic conductive plate 4. In this example, the magnetic gap includes a space between the edge magnetic plates 5 and the center magnetic plate 4 and a space between the edge magnets 3 and the center magnet 2. The side magnetic conductive plate 5 and the center magnetic conductive plate 4 can gather the magnetic field of the magnetic circuit system, thereby improving the magnetic field intensity in the gap between the two and driving the voice coil 7 more effectively. The projection 32 reduces the width of the magnetic gap, thereby improving the magnetic induction strength in the magnetic gap, and improving the BL value and vibration sensitivity of the sounding unit.
The vibration system of the present invention includes a diaphragm 11, a voice coil 7, and a damper 9. One end of the voice coil 7 is connected to the diaphragm 11, and the other end extends into the magnetic gap. The diaphragm 11 of the present invention includes an edge portion at an edge, a center portion at a center, and a corrugated portion between the edge portion and the center portion. The edge portion of the diaphragm 11 is fixed above the side magnetic circuit portion, for example, on the upper surface of the side magnetic plate 5. For example, referring to fig. 6, the edge of the edge-conduction plate 5 is provided with a first flange 34 protruding upward, and the edge portion of the diaphragm is fixed to the first flange 34. Upward is the direction away from the magnetic circuit when the diaphragm 11 vibrates. The first flange 34 provides space for the diaphragm to vibrate.
The diaphragm 11 may also be arranged above the edge-conduction plate 5 via a washer 8, and referring to fig. 4, of course, the washer 8 may also be supported on the yoke 1.
Of course, the diaphragm 11 may also be a planar diaphragm 11, which belongs to the common general knowledge of those skilled in the art and is not described in detail herein.
The upper end of the voice coil 7 of the present invention may be directly connected to the lower end of the vibration part. Or a hollow structure can be arranged on the vibration part and covered by the arranged ball top 6. In this case, the upper end of the voice coil 7 may be connected to a region where the vibrating portion is not hollowed out, or may be directly connected to the lower end of the dome 6. The other end of the voice coil 7 needs to extend into the magnetic gap of the magnetic circuit system, so that the voice coil 7 vibrates under the action of the magnetic force lines.
In the present invention, the projection of the diaphragm 11 in its direction of vibration lies within the outer contour of the magnetic circuit. This construction differs from a conventional diaphragm 11 which is attached to the housing such that the projection of the diaphragm 11 in its direction of vibration lies outside the outer contour of the magnetic circuit. In the invention, the sounding single body does not need to be additionally provided with a shell, so that the sounding single body can be made smaller, and the development trend of miniaturization, lightness and thinness of electronic equipment is met.
The damper 9 includes a fixing portion 94 fixed to the side magnetic circuit portion, a vibrating portion connected to the voice coil 7, and a cantilever 93 connecting the fixing portion 94 and the vibrating portion. The centering support 9 has elasticity, can effectively support a vibration system, and reduces or even avoids the occurrence of polarization of the sounding monomer.
In one embodiment of the present invention, the edge of the side magnetic conductive plate 5 is provided with a second flange 51 protruding downward, the outer edge of the magnetic yoke 1 is provided with a bent portion 12 protruding upward, the second flange 51 and the bent portion 12 are arranged opposite to each other, and the fixing portion 94 of the centering branch piece 9 is clamped between the second flange 51 and the bent portion 12; the vibrating portion is connected to a free end 71 of the voice coil 7. Downward refers to a direction close to the magnetic circuit system when the diaphragm 11 vibrates. The second flange 51 and the bent portion 12 form a clamp for the fixing portion 94, which makes the position of the damper 9 more fixed and the connection of the damper 9 to the side magnetic path portion more secure.
In another embodiment of the present invention, the edge of the side magnetic conductive plate 5 is provided with a third flange protruding upward, the edge of the gasket 8 is provided with a fourth flange protruding downward, and the fixing portion 94 is clamped between the third flange and the fourth flange; the vibration part is arranged between the vibrating diaphragm and the voice coil; alternatively, the vibrating portion is provided at a side portion of one end of the voice coil 7 connected to the diaphragm 11. The third and fourth flanges form a clamp for the fixing portion 94, which makes the position of the damper 9 more fixed and the connection of the damper 9 to the side magnetic path portion more secure.
Preferably, the vibrating portion, the fixing portion 94 and the cantilever 93 of the damper 9 are hermetically sealed in a ring shape. The annular structure enables the supporting force of the centering support to be larger, the supporting force is more balanced, and polarization can be effectively prevented.
In the prior art, the cantilever 93 of the centering branch piece 9 occupies a part of the space, so that the edge magnet 3 cannot be arranged at the position where the centering branch piece 9 is arranged, the BL value of the sounding unit is reduced, and the driving force is reduced. In a preferred example of the present invention, the central magnetic path portion has a rectangular overall configuration, the side magnetic path portions are provided on four sides of the central magnetic path portion, and two side magnetic path portions provided on short sides of the rectangular overall configuration pass through the annular interior of the centering leg 9. In this example, two edge magnets 3 each pass through a corresponding ring structure. Referring to fig. 3, first side magnet 33 is located in a ring structure 95. In the embodiment of the invention, the magnetic circuit system has higher magnetic induction strength, so that the driving force of the vibration system is effectively improved, the maximum amplitude of the sounding monomer is improved, and the vibration sensitivity is improved.
In addition, the space in the sounding monomer can be fully utilized by the mode, and the volume of the sounding monomer is reduced.
It is further preferred that the damper 9 comprises a conductive material, and the vibrating portion comprises a first pad 91 electrically connected to a voice coil lead of the voice coil 7. Optionally, the centering branch 9 comprises a second pad 92 for electrical connection with an external circuit; the second pad 92 is connected to the fixing portion 94 along the outer side of the side magnetic path portion.
For example, the centring disk 9 comprises a conductive material. And a PI layer is coated outside the conductor material. The stiffener can provide stress, resulting in reduced polarization. Further, the conductor material leaks out of the PI layer at the vibrating portion to form a first pad 91, the first pad 91 being electrically connected to the voice coil lead of the voice coil 7; the PI layer leaks out outside the fixing portion to form a second pad 92, and the second pad 92 is electrically connected to an external circuit, thereby supplying a driving signal. The outer side is the side away from the central magnet.
Referring to fig. 1-2, a first pad 91 is disposed in the magnetic gap in air and is fixed to the free end 71 of the voice coil. The free end 71 is the end of the voice coil 7 remote from the diaphragm 11.
Alternatively, the first pad 91 is adhered on the end face of the free end 71 or outside the free end 71 by glue. When bonded to the end face of the free end 71, the gap between the side magnet 3 and the center magnet 2 can be made narrower, so that the remaining space serves to increase the volume of the side magnet 3 and/or the center magnet 2; when bonded on the outside of the free end 71, the damper 9 does not occupy a vibration space. Both the two modes can ensure that the residual space is used for increasing the volume of the side magnet 3 or the central magnet 2, thereby improving the BL value of the sounding single body, improving the amplitude of a vibration system and improving the vibration sensitivity.
Further, a second pad 92 is provided on the lower surface of the yoke 1. Therefore, the space perpendicular to the vibration direction is not occupied, and the size of the sounding single body perpendicular to the vibration direction is reduced. And the reduced space is used to increase the mass of the center magnet 2 and/or the side magnets 3, so that the BL value of the sounding unit becomes large and the driving force is enhanced.
In one embodiment of the present invention, referring to fig. 5, the number of the first pads 91 is two, and one of the first pads is connected to an incoming terminal of a voice coil lead, and the other of the first pads is connected to an outgoing terminal of the voice coil lead. Two second pads 92 are provided, and the two second pads 92 are connected to the two first pads 91 in a one-to-one correspondence. The two second pads 92 are connected to the positive and negative electrodes of the external circuit, respectively. In this way, the one centering branch piece can be used for connecting the outlet end and the inlet end of the voice coil lead, so that the welding of the voice coil lead is easy.
Further preferably, the voice coil is formed by winding two voice coil leads together, the incoming line ends of the two voice coil leads are electrically connected to the same first bonding pad 91, the outgoing line ends of the two voice coil leads are electrically connected to the same first bonding pad 91, and the first bonding pad electrically connected with the incoming line end is different from the first bonding pad electrically connected with the outgoing line end.
So, the wire winding of voice coil loudspeaker voice coil adopts two voice coil loudspeaker voice coil lines to twine jointly, and two voice coil loudspeaker voice coil lines are parallelly connected together, and two lead wires are parallelly connected like this and can be under the prerequisite of same resistance, and more thin than the line footpath of single line for voice coil loudspeaker voice coil thickness is thinner, and the magnetic gap can be narrower, has higher BL value, and then improves vibration system's sensitivity, improves the free vocal performance of sound production.
In one embodiment of the invention, with reference to fig. 3, there are two centering struts 9. Each centering disk 9 is used to connect one side of a rectangular diaphragm 11. The two centring lugs 9 are symmetrically distributed on opposite sides of the diaphragm 11. One of the centering buttresses 9 comprises a vibrating portion, a fixed portion 94 and a cantilever 93. The vibrating portion includes two first pads 91, and the fixing portion 94 includes two second pads 92. The centering disk 9 can provide stress and has the function of electrical connection; the other centering branch piece comprises a vibrating part, a fixed part and a cantilever. The vibrating portion is not provided with the first pad. The fixing part is not provided with a second bonding pad. This way, symmetrical stress can be provided, thereby reducing the polarization of the sounding unit, improving the XMAX (maximum amplitude) of the sounding module, and simplifying the electrical connection structure.
On the centering tabs for electrical connection, referring to fig. 5, two grooves are provided on the lower surface of the yoke 1. The two grooves are respectively positioned at two adjacent corners of the yoke 1. At least portions of the two second pads 92 are respectively embedded in the two grooves. Thus, the thickness of the two second pads 92 does not increase the height of the sounding unit, and the remaining space can be used to increase the volume of the magnetic circuit system, thereby increasing the BL value and the vibration sensitivity of the sounding unit.
Alternatively, there may be one centering branch piece 9. The centering disk 9 is of unitary construction. The centering disk 9 comprises two functional areas which correspond to two opposite sides of the rectangular diaphragm 11. One of the functional areas is provided with a vibrating part, a fixing part and a cantilever, the vibrating part comprises a first bonding pad, the fixing part comprises a second bonding pad, and the functional areas can be electrically connected; the other functional region is formed with a vibrating portion, a fixing portion and a cantilever. The functional area is not used for conduction and only plays a role in providing elasticity.
In other embodiments, there are two centering fins 9, and the two centering fins correspond to the outlet end and the inlet end of the voice coil lead wire one by one. Each of the yokes 9 includes a vibrating portion including a first land 91, a fixing portion 94 including a second land 92, and a cantilever. One of the two centering branch pieces 9 is connected with the incoming line end, and the other is connected with the outgoing line end.
The two centering branch sheets can provide symmetrical stress for the vibration system, so that the polarization of the product is effectively reduced. The elastic coefficient of the centring disk can be set by a person skilled in the art according to actual needs to effectively reduce the reaction force.
In one embodiment of the present invention, referring to fig. 3, the side magnets 3 have an isosceles trapezoid cross section. The short bottom edge 31 of the side magnet 3 is close to the center magnet 2. The short base 31 refers to the shorter of the two bases of the isosceles trapezoid. Compared with the bar magnet, the isosceles trapezoid side magnet 3 has a larger volume, so that the magnetic induction strength of the magnetic gap is larger, and the driving force of the voice coil 7 is improved.
The invention also provides a sound production module. The sound production module comprises a module shell and the sound production unit arranged in the module shell. The sound production module has the characteristics of good sound effect and high vibration sensitivity.
The invention also provides an electronic terminal. The electronic terminal comprises a terminal shell and the sounding single body or the sounding module, wherein the sounding single body or the sounding module is arranged in the terminal shell.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (13)
1. A sounding monomer is characterized in that: the magnetic circuit system comprises a magnetic circuit system and a vibration system, wherein the magnetic circuit system comprises a magnetic yoke, and a central magnetic circuit part and a side magnetic circuit part which are arranged on the magnetic yoke, at least one of the central magnetic circuit part and the side magnetic circuit part comprises a permanent magnet, and a magnetic gap is formed between the central magnetic circuit part and the side magnetic circuit part;
the vibration system comprises a vibrating diaphragm, a voice coil and a centering support piece, wherein one end of the voice coil is connected to the vibrating diaphragm, and the other end of the voice coil extends into the magnetic gap;
wherein, the edge part of the diaphragm is fixed above the side magnetic circuit part;
the projection of the diaphragm in the vibration direction of the diaphragm is positioned in the outer contour range of the magnetic circuit system;
the centering support piece comprises a fixed part fixedly held on the side magnetic circuit part, a vibrating part connected with the voice coil and a cantilever connecting the fixed part and the vibrating part; wherein,
the side magnetic circuit part comprises a side magnet and a side magnetic conduction plate arranged on the upper surface of the side magnet, and the edge part of the vibrating diaphragm is fixed on the upper surface of the side magnetic conduction plate; the edge of the side magnetic conducting plate is provided with a second flange in a downward protruding mode, the outer edge of the magnetic yoke is provided with a bent portion in an upward protruding mode, the second flange and the bent portion are arranged oppositely, and the fixing portion is clamped between the second flange and the bent portion; the vibration part is connected with the free end of the voice coil;
or, a gasket is arranged at the edge of the upper surface of the side magnetic conduction plate, the edge of the diaphragm is fixed on the gasket, a third flange is arranged at the edge of the side magnetic conduction plate in an upward protruding manner, a fourth flange is arranged at the edge of the gasket in a downward protruding manner, and the fixing part is clamped between the third flange and the fourth flange; the vibration part is arranged between the vibrating diaphragm and the voice coil; or the vibration part is arranged on the side part of one end of the voice coil connected with the vibrating diaphragm.
2. The sound generating unit as claimed in claim 1,
the edge of the side magnetic conduction plate is provided with a first flange in an upward protruding mode, and the edge portion of the vibrating diaphragm is fixed to the first flange.
3. The sounding unit according to claim 1, wherein the vibrating portion, the fixing portion and the cantilever of the centering pad are sealed and ring-shaped.
4. A sound generating unit as claimed in claim 3, characterized in that: the whole central magnetic circuit part is of a rectangular structure, the side magnetic circuit parts are arranged on four sides of the central magnetic circuit part, and the two side magnetic circuit parts arranged on the short sides of the rectangular structure respectively penetrate through the annular inner part of the centering support piece.
5. The sounding unit according to claim 1, wherein the vibrating portion is fixed to an end surface of the free end or a side portion of the free end.
6. The sound generating unit according to claim 1, wherein the damper includes a conductive material, and the vibrating portion includes a first pad electrically connected to a voice coil lead of the voice coil.
7. The sound generating unit according to claim 6, wherein the centering branch piece comprises a second pad for electrically connecting with an external circuit; the second pad is connected to the fixing portion along an outer side of the edge magnetic path portion.
8. The sound generating unit as claimed in claim 7, wherein the second land is provided on a lower surface of the yoke.
9. The sound generating unit of claim 7, wherein: the number of the first bonding pads is two, one of the first bonding pads is connected with an incoming line end of a voice coil lead, and the other first bonding pad is connected with an outgoing line end of the voice coil lead; the number of the second bonding pads is two, and the two second bonding pads are connected with the two first bonding pads in a one-to-one correspondence mode.
10. The sounding unit according to claim 9, wherein the voice coil is formed by co-winding two voice coil leads, the incoming ends of the two voice coil leads are electrically connected to the same first pad, the outgoing ends of the two voice coil leads are electrically connected to the same first pad, and the first pad electrically connected to the incoming end is different from the first pad electrically connected to the outgoing end.
11. A sound-emitting monomer according to any one of claims 1-5, wherein: the side magnetic conductive plate has a projection extending toward a portion near the central magnetic circuit.
12. The utility model provides a vocal module which characterized in that: comprising a module housing and a sound-generating unit according to any of claims 1-11 mounted in the module housing.
13. Electronic terminal, its characterized in that: comprising a terminal housing, and the sounding monomer of any one of claims 1 to 11 mounted in the terminal housing, or the sounding module of claim 12 mounted in the terminal housing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820625401X | 2018-04-27 | ||
| CN201820625401 | 2018-04-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110418260A CN110418260A (en) | 2019-11-05 |
| CN110418260B true CN110418260B (en) | 2022-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810720240.7A Active CN110418260B (en) | 2018-04-27 | 2018-07-03 | Sound production monomer, sound production module and electronic terminal |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110418260B (en) |
| WO (1) | WO2019205657A1 (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112788498A (en) * | 2019-11-08 | 2021-05-11 | 歌尔股份有限公司 | Sound production device and electronic terminal |
| CN110933564B (en) * | 2019-11-26 | 2021-07-27 | 歌尔股份有限公司 | Magnetic conductive plate for sound production device and sound production device |
| WO2021114122A1 (en) * | 2019-12-11 | 2021-06-17 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| CN110933570B (en) * | 2019-12-13 | 2021-11-16 | 歌尔股份有限公司 | Sound production device and electronic equipment |
| CN110972038A (en) * | 2019-12-31 | 2020-04-07 | 歌尔科技有限公司 | Sound production device |
| CN113079443B (en) * | 2020-01-06 | 2023-12-22 | 歌尔股份有限公司 | Sounding device |
| CN111147986A (en) * | 2020-02-28 | 2020-05-12 | 歌尔股份有限公司 | Sound producing device |
| CN111641901B (en) * | 2020-05-08 | 2021-10-19 | 瑞声科技(新加坡)有限公司 | Sound production device |
| CN113747315B (en) * | 2020-05-29 | 2024-04-30 | 歌尔股份有限公司 | Sound producing device and electronic equipment |
| CN113747319B (en) * | 2020-05-29 | 2024-04-30 | 歌尔股份有限公司 | Sound producing device and electronic equipment |
| CN111988713B (en) * | 2020-08-31 | 2021-11-09 | 歌尔股份有限公司 | Speaker monomer and electronic terminal |
| CN112929801B (en) * | 2021-03-04 | 2022-09-20 | 歌尔股份有限公司 | Speaker and electronic apparatus |
| CN113099363B (en) * | 2021-03-31 | 2022-11-22 | 歌尔股份有限公司 | Sound producing device |
| CN113099362B (en) * | 2021-03-31 | 2022-07-22 | 歌尔股份有限公司 | Sound producing device |
| CN113473333B (en) * | 2021-06-28 | 2023-04-11 | Oppo广东移动通信有限公司 | Electroacoustic device and electronic apparatus |
| CN114501259B (en) * | 2021-06-29 | 2023-05-23 | 北京荣耀终端有限公司 | Kernel, loudspeaker module and electronic equipment |
| CN113645552A (en) * | 2021-08-31 | 2021-11-12 | 歌尔股份有限公司 | Sound production device for electronic device and electronic device |
| CN116055961B (en) * | 2022-06-27 | 2023-10-27 | 荣耀终端有限公司 | Kernel, speaker module and electronic equipment |
| CN117676441A (en) * | 2022-08-31 | 2024-03-08 | 荣耀终端有限公司 | Speaker module and electronic equipment |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5014883B2 (en) * | 2007-06-06 | 2012-08-29 | ミネベア株式会社 | Speaker |
| CN201928429U (en) * | 2011-01-21 | 2011-08-10 | 峻扬实业股份有限公司 | Loudspeaker structure |
| CN202488700U (en) * | 2012-01-06 | 2012-10-10 | 瑞声光电科技(常州)有限公司 | Miniature sounding device |
| CN202818587U (en) * | 2012-08-27 | 2013-03-20 | 瑞声光电科技(常州)有限公司 | Micro loudspeaker |
| CN202799131U (en) * | 2012-08-27 | 2013-03-13 | 瑞声光电科技(常州)有限公司 | Micro loudspeaker |
| CN104735595A (en) * | 2015-03-11 | 2015-06-24 | 歌尔声学股份有限公司 | Loudspeaker device |
| CN204616078U (en) * | 2015-04-22 | 2015-09-02 | 歌尔声学股份有限公司 | Speaker unit |
| CN104902393B (en) * | 2015-05-21 | 2018-12-14 | 歌尔股份有限公司 | A kind of electro-acoustic conversion device |
| CN105992110A (en) * | 2016-05-05 | 2016-10-05 | 歌尔股份有限公司 | Sound generating device and sound generating device module group |
| CN206100441U (en) * | 2016-10-12 | 2017-04-12 | Tcl通力电子（惠州）有限公司 | Speaker and sound box |
-
2018
- 2018-07-03 CN CN201810720240.7A patent/CN110418260B/en active Active
- 2018-12-11 WO PCT/CN2018/120386 patent/WO2019205657A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019205657A1 (en) | 2019-10-31 |
| CN110418260A (en) | 2019-11-05 |
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