CN110418251B - 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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- CN110418251B CN110418251B CN201810717441.1A CN201810717441A CN110418251B CN 110418251 B CN110418251 B CN 110418251B CN 201810717441 A CN201810717441 A CN 201810717441A CN 110418251 B CN110418251 B CN 110418251B
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- voice coil
- magnetic circuit
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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
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/046—Construction
- H04R9/047—Construction in which the windings of the moving coil lay in the same plane
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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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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
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- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention discloses a sounding single body, a sounding module and an electronic terminal, which comprise a magnetic circuit system, a vibration system and a circuit board, 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 vibrating diaphragm and a voice coil, one end of the voice coil is connected to the vibrating diaphragm, and the other end of the voice coil extends into a magnetic gap of the magnetic circuit system; one side of the circuit board extends along the side wall of the side magnetic circuit part to form a first bonding pad, the other side of the circuit board extends on the lower surface of the magnetic yoke to form a second bonding pad, the first bonding pad is connected with a voice coil lead of the voice coil, and the second bonding pad is configured to be connected with an external circuit. Above-mentioned first pad sets up on the lateral wall of limit magnetic circuit part, has reduced the shared area of sound production monomer, and the volume of multiplicable magnet subassembly improves the free BL value of sound production, and then improves vibration sensitivity.
Description
Technical Field
The invention relates to the technical field of electroacoustic conversion, in particular to a sounding unit, a sounding module and an electronic terminal.
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 existing speaker module comprises a shell, and a magnetic circuit system and a vibration system which are arranged in the shell. 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.
The voice coil wire of the voice coil is conducted with an external circuit through the circuit board. The circuit board includes an inner pad for connection with the voice coil wire and an outer pad for connection with an external circuit. The circuit boards are usually two in number, one of which is connected to the incoming end of the voice coil wire, and the other of which is connected to the outgoing end. The inner pads of the circuit board usually protrude from the side of the speaker in such a manner that the speaker occupies a large area, and accordingly, the volume of the magnet assembly has to be reduced, resulting in a reduction in the driving force of the speaker.
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, a vibration system and a circuit board, 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 and a voice coil, one end of the voice coil is connected to the vibrating diaphragm, and the other end of the voice coil extends into a magnetic gap of the magnetic circuit system; wherein one side of the circuit board extends along the side wall of the side magnetic circuit part to form a first bonding pad, the other side of the circuit board extends on the lower surface of the magnetic yoke to form a second bonding pad, the first bonding pad is connected with a voice coil lead of the voice coil, and the second bonding pad is configured to be connected with an external circuit.
Optionally, a groove is formed in the lower surface of the magnetic yoke, and the second pad is embedded in the groove.
Optionally, the side magnetic circuit portion is disposed around the central magnetic circuit portion, the circuit board includes a first circuit board and a second circuit board, a first pad connected to the first circuit board is attached to a side wall of the side magnetic circuit portion on one side of the central magnetic circuit portion and connected to an incoming line end of a voice coil lead, and a first pad connected to the second circuit board is attached to a side wall of the side magnetic circuit portion on the other side of the central magnetic circuit portion and connected to an outgoing line end of the voice coil lead.
Optionally, the second pad connected to the first circuit board and the second pad connected to the second circuit board are located on the same side of the lower surface of the yoke.
Optionally, a groove extending from the side magnetic circuit portion attached to the first pad to the second pad is provided on the lower surface of the yoke, and the circuit board is disposed in the groove.
Optionally, the cross section of the side magnetic path portion is an isosceles trapezoid, the short bottom edge of the side magnetic path portion is close to the central magnetic path portion, and the first pad of the circuit board is attached to the long bottom edge of the side magnetic path portion.
Optionally, the voice coil is formed by winding two voice coil wires together, and two end portions of each voice coil wire form a wire inlet end and a wire outlet end respectively; the leading-out positions of the two wire inlet ends are positioned on one side of the voice coil, and the leading-out positions of the two wire outlet ends are positioned on the other side of the voice coil; two incoming terminals are connected to one of the first pads, and two outgoing terminals are connected to the other first pad.
Optionally, when the two incoming line ends respectively pass through the respective corresponding openings, the distance between at least one incoming line end and the corresponding side magnetic circuit portion thereof gradually decreases from a portion close to the magnetic gap to a portion close to the outer side of the side magnetic circuit portion;
and/or the presence of a gas in the gas,
when the two outlet ends respectively penetrate through the corresponding openings, the distance between at least one outlet end and the corresponding side magnetic circuit part is gradually reduced from the part close to the magnetic gap to the part close to the outer part of the side magnetic circuit part.
Optionally, three first pads and two second pads are formed on the circuit board; the voice coil is formed by winding a first voice coil wire and a second voice coil wire together, and an incoming line end and an outgoing line end are formed at two end parts of each voice coil wire respectively; the circuit board comprises a circuit board and a first voice coil wire, wherein the circuit board comprises a first pad, a second pad and a circuit board, the first pad is used for connecting the first voice coil wire and the second voice coil wire, the incoming line end of the first voice coil wire is connected to one of the first pads, the outgoing line end of the first voice coil wire and the incoming line end of the second voice coil wire are connected to the other first pad, and an internal circuit of the circuit board is configured to be used for electrically connecting one of the second pads with the first pad connected with the incoming line end of the first voice coil wire and electrically connecting the other second pad with the first pad connected with the outgoing line end of the second voice coil wire.
Optionally, an edge portion of the diaphragm is fixed above the side magnetic path portion; the projection of the diaphragm in the vibration direction thereof is located within the outer contour of the magnetic circuit system.
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 flange, and the edge portion of the diaphragm is fixed to the flange.
According to a third 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 the sounding unit provided by the present invention mounted in the terminal housing, or the sounding module according to claim 14 mounted in the terminal housing.
According to an embodiment of this disclosure, first pad sets up on the lateral wall of limit magnetic circuit part, and this makes the area that the sound production monomer took reduce, so can be used for increasing the volume of magnet subassembly with remaining space to make the free BL value of sound production increase, improved the free vibration sensitivity of sound production.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, 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 schematic structural view of a sounding unit according to an embodiment of the present invention.
Fig. 2 is a schematic view of another angle structure of the sounding unit according to an embodiment of the present invention.
Fig. 3 is a schematic view of a portion of a sound emitting cell according to one embodiment of the present invention.
Fig. 4 is a schematic view of a portion of a sound emitting cell according to another embodiment of the present invention.
Fig. 5 is a schematic view of a portion of a sound emitting cell according to yet another embodiment of 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 one 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, it need not be discussed further in subsequent figures.
Referring to fig. 1, the present invention provides a sounding unit, which can be applied to a sounding module and an electronic terminal. The sounding unit comprises a magnetic circuit system, a vibration system and a circuit board. 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 and distributed around the central magnet 2 to form a five-magnetic-circuit system. And magnetic gaps of the magnetic circuit system are formed between the four side magnets 3 and the central magnet 2. 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 as to facilitate the leading-out of the subsequent voice coil wire.
In order to concentrate the magnetic induction 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 plate 5 may be bonded to the upper surfaces of the four side magnets 3 simultaneously, using an integrated annular structure.
The vibration system of the present invention includes a diaphragm 11 and a voice coil 7 mounted on the diaphragm 11. The diaphragm 11 of the present invention includes a vibrating portion located at an edge portion, a vibrating portion located at a middle portion, and a loop portion located between the edge portion and the vibrating portion. The edge part of the diaphragm 11 is fixed on the upper surface of the edge magnetic conduction plate 5. Preferably, the edge of the edge magnetic plate 5 is provided with a flange protruding upward, and the edge of the diaphragm 11 is fixed on the flange. The flange provides a vibration space for the diaphragm to vibrate. Upward, i.e. away from the magnetic circuit when the diaphragm 11 vibrates.
The edge of the upper surface of the side magnetic conducting plate 5 may also be provided with a gasket 8. The edge portion of the diaphragm 11 may be disposed on the upper surface of the side magnetic plate 5 through the gasket 8, and of course, the gasket 8 may also be supported on the yoke 1, which belongs to the common general knowledge of those skilled in the art and is not described in detail herein.
Of course, the diaphragm 11 may also be a planar diaphragm, 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.
One side of the circuit board extends along the side wall of the side magnetic path portion to form a first land 91. The other side of the circuit board extends to form a second pad 92 on the lower surface of the yoke 1. The lower surface is the surface of the yoke opposite the vibration system. The first pad 91 is connected to a 7-voice coil lead of the voice coil. The second pad 92 is configured for connection with an external circuit.
For example, the circuit board includes a conductive layer and a PI layer laid outside the conductive layer. The conductive layer is exposed at the end of the circuit board near the voice coil leads to form a first pad 91 and exposed at the side near the external device to form second pads 92, 102. The lead-out end or the lead-in end of the voice coil lead is fixed to the first land 91 by soldering, bonding, or the like.
In the invention, the first bonding pad 91 is attached to the side wall of the side magnetic circuit part, so that the occupied area of the sounding single body is reduced, the residual space can be used for increasing the volume of the magnetic circuit system, the BL value of the sounding single body is increased, and the vibration sensitivity of the sounding single body is improved.
In one embodiment of the present invention, referring to fig. 2, a first groove 12 is provided on the lower surface of the yoke 1, and the second pads 92,102 are fitted in the first groove 12. Thus, the second pads 92 and 102 do not increase the height of the sounding unit, and the electronic terminal is compliant with the trend of miniaturization and lightness.
In a specific embodiment of the present invention, referring to fig. 2, a second recess 13 is provided on the lower surface of the yoke 1 extending from the side magnetic path portion where the first land 91 is attached to the second land 92,102, and a circuit board (e.g., a first circuit board 93) is disposed in the second recess 13. Therefore, the circuit board does not increase the height of the sounding unit, and conforms to the trend of miniaturization, lightness and thinness of electronic equipment.
The skilled person can set the depth, width and orientation of the two grooves according to the actual requirement. The two grooves are formed on the yoke 1 by casting, punching, or the like.
In one embodiment of the present invention, referring to fig. 2 and 3, the side magnetic path portions are disposed around the central magnetic path portion, and the circuit boards include a first circuit board 93 and a second circuit board 103. Voice coil leads of the voice coil 7 are led out from openings between the side magnets 3. The first land 91 connected to the first circuit board 93 is bonded to the side wall of the side magnetic path portion on the side of the center magnetic path portion and connected to the lead-in ends of the voice coil leads. The first pad connected to the second circuit board 103 is attached to the side wall of the side magnetic path portion on the other side of the center magnetic path portion, and is connected to the lead terminal of the voice coil lead. The two circuit boards correspond to the outlet terminal and the inlet terminal of the voice coil 7, respectively. For example, four limit magnets enclose into the rectangle structure, and two first pads 91 set up two minor faces department at the rectangle structure, and the free size of sound production only increases in long edge direction like this, and can not increase the size of minor face direction for the free ID design of sound production is more reasonable.
In one embodiment of the present invention, referring to fig. 3, the cross section of the side magnetic path portion is an isosceles trapezoid, the short bottom edge 75 of the side magnetic path portion is close to the central magnetic path portion, and the first pad 91 of the circuit board is attached to the long bottom edge of the side magnetic path portion. The short base 75 refers to the shorter of the two bases of the isosceles trapezoid, and the long base refers to the longer of the two bases. For example, the side magnet 3 has an isosceles trapezoid cross section, and the isosceles trapezoid side magnet 3 has a larger volume than the bar magnet, so that the magnetic induction strength of the magnetic gap is larger, the driving force of the voice coil 7 is improved, and the vibration sensitivity of the sounding unit is improved.
In one embodiment of the present invention, referring to fig. 3, the voice coil 7 is formed by winding two voice coil wires together, and the two ends of each voice coil wire form a wire inlet end and a wire outlet end, respectively. The leading-out positions of the two wire inlet ends are positioned at one side of the voice coil 7, and the leading-out positions of the two wire outlet ends are positioned at the other side of the voice coil 7; two incoming terminals are connected to one of the first lands 91, and two outgoing terminals are connected to the other first land 91. Thus, the two voice coil wires are connected in parallel.
The voice coil leads may be enameled wires well known to those skilled in the art. Two voice coil loudspeaker voice coils 7 distribute side by side, and accessible coiler simultaneous successive layer winding for on each layer of winding wire, two voice coil loudspeaker voice coil line interval are arranged. The number of layers wound on the voice coil 7 may be determined according to design requirements, for example, two or more layers.
The two voice coil wires form two incoming line ends and two outgoing line ends respectively on the voice coil 7, the two incoming line ends are used for leading in electric signals, and the two outgoing line ends are used for leading out the electric signals to form a loop.
According to the sounding single body, the winding of the voice coil adopts a mode that two voice coil wires are wound together, and the two incoming wires and the two outgoing wires form four suspended lead wires. The four suspension leads are in geometric symmetrical distribution, and the reaction force to the vibration system is more symmetrical during vibration, so that the polarization of the product is greatly reduced, the distortion is improved, and the tone quality is improved; in addition, the design enables the sounding monomer to have a higher BL value, thereby improving the sensitivity of the monomer.
For convenience of description, the two incoming terminals and the two outgoing terminals can be respectively referred to as a first incoming terminal 71, a second incoming terminal 72, a first outgoing terminal 73, and a second outgoing terminal 74. The first and second incoming line ends 71 and 72 are led out at two end regions on one side of the voice coil 7, and the first and second outgoing line ends 73 and 74 are led out at two end regions on the opposite side of the voice coil 7.
Referring to the view direction of fig. 3, the leading positions of the first incoming line end 71 and the second incoming line end 72 are located in the upper and lower end regions on the left side of the voice coil 7, and the leading positions of the first outgoing line end 73 and the second outgoing line end 74 are located in the upper and lower end regions on the right side of the voice coil 7. Note that "left side" and "right side" herein do not refer to the left side wall and the right side wall of the voice coil 7, but refer to the left area and the right area of the voice coil 7.
The first incoming line end 71, the second incoming line end 72, the first outgoing line end 73, and the second outgoing line end 74 may be led out from, for example, four corner positions of the voice coil 7, and the four lead ends may be led out from short sides of four corner regions of the voice coil 7 or from long sides of the four corner regions, which is not particularly limited herein.
The leading-out positions of the first wire inlet end 71, the second wire inlet end 72, the first wire outlet end 73 and the second wire outlet end 74 are positioned at four corner positions of the voice coil 7, the first wire inlet end 71 and the second wire inlet end 72 are adjacent on one short side of the voice coil 7, and the first wire outlet end 73 and the second wire outlet end 74 are adjacent on the other short side of the voice coil 7; the first inlet terminal 71 and the first outlet terminal 73 are adjacent to each other on one long side of the voice coil 7, and the second inlet terminal 72 and the second outlet terminal 74 are adjacent to each other on the other long side of the voice coil 7. The short side of the voice coil is parallel to the short side of the yoke. The long side of the voice coil is parallel to the long side of the yoke.
Openings formed between adjacent two side magnets 3 correspond to four corner regions of the voice coil 7 so that four lead terminals can be led out from the corresponding opening positions and connected to the corresponding first pads 91. For example, the first and second incoming terminals 71 and 72 are connected to the first land on the left side, and the first and second outgoing terminals 73 and 74 are connected to the first land on the right side.
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 an optional embodiment of the present invention, when the two line inlet ends respectively pass through the respective openings, the distance between at least one line inlet end and the corresponding side magnetic path portion thereof gradually decreases from a portion close to the magnetic gap to a portion close to the outer side of the side magnetic path portion; and/or when the two outlet ends respectively pass through the corresponding openings, the distance between at least one outlet end and the corresponding side magnetic circuit part is gradually reduced from the part close to the magnetic gap to the part close to the outer side of the side magnetic circuit part.
Specifically, referring to fig. 5, when the first line inlet end 71 is led out from the corner position of the voice coil 7 and passes through the opening formed between the two adjacent side magnets 3 corresponding thereto, the distance between the first line inlet end 71 and the side magnet 3 at the short side position gradually decreases from the vicinity of the magnetic gap to the vicinity of the outer side of the side magnet 3 corresponding thereto. The second incoming line terminal 72, the first outgoing line terminal 73 and the second outgoing line terminal 74 are also led out in this way, and will not be described in detail here. By adopting the leading-out mode, the suspended lengths of the four leading-out ends can be increased in a small space, so that the stress of the lead during vibration can be reduced, and the vibration effect of a vibration system is improved.
In a specific embodiment of the present invention, three first pads 91a, 91b, 91c and two second pads are formed on the circuit board; the voice coil is formed by winding a first voice coil wire and a second voice coil wire together, and the two end parts of each voice coil wire form a wire inlet end and a wire outlet end respectively; the incoming line end of the first voice coil wire is connected to one of the first bonding pads, the outgoing line end of the first voice coil wire and the incoming line end of the second voice coil wire are connected to the other first bonding pad together, the outgoing line end of the second voice coil wire is connected to the last first bonding pad, and the internal circuit of the circuit board is configured to be used for electrically connecting one of the second bonding pads with the first bonding pad connected with the incoming line end of the first voice coil wire and electrically connecting the other second bonding pad with the first bonding pad connected with the outgoing line end of the second voice coil wire.
Referring to fig. 4, the first incoming terminal is connected to the first pad 91a, the first outgoing terminal 73 and the second incoming terminal 72 are connected to the first pad 91b, and the second outgoing terminal is connected to the first pad 91 c. One of the two second pads is electrically connected to the first pad 91a, and the other is electrically connected to the first pad 91 c. This connection enables a series connection of two voice coil wires.
For example, in the sound generating unit of the present invention, the connection portion 50 at the edge of the diaphragm is fixed above the side magnetic circuit portion, and the projection of the diaphragm in the vibration direction thereof is located within the outer contour of the magnetic circuit system. This construction differs from a conventional diaphragm which is attached to the housing such that the projection of the diaphragm in its direction of vibration lies outside the outer contour of the magnetic circuit.
The invention also provides a sounding 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 (15)
1. A sounding monomer is characterized in that: the magnetic circuit system comprises a magnetic circuit system, a vibration system and a circuit board, 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 and a voice coil, one end of the voice coil is connected to the vibrating diaphragm, and the other end of the voice coil extends into a magnetic gap of the magnetic circuit system;
one side of the circuit board extends along the side wall of the side magnetic circuit part to form a first bonding pad, the first bonding pad is attached to the side wall of the side magnetic circuit part, the other side of the circuit board extends on the lower surface of the magnetic yoke to form a second bonding pad, the first bonding pad is connected with a voice coil lead of the voice coil, and the second bonding pad is configured to be connected with an external circuit.
2. The sound generating unit of claim 1, wherein: the lower surface of the magnetic yoke is provided with a first groove, and the second bonding pad is embedded in the first groove.
3. The sound generating unit of claim 1, wherein: the side magnetic circuit part is arranged around the central magnetic circuit part, the circuit board comprises a first circuit board and a second circuit board, a first bonding pad connected with the first circuit board is attached to the side wall of the side magnetic circuit part on one side of the central magnetic circuit part and is connected with the wire inlet end of the voice coil lead, and a first bonding pad connected with the second circuit board is attached to the side wall of the side magnetic circuit part on the other side of the central magnetic circuit part and is connected with the wire outlet end of the voice coil lead.
4. A sound generating unit as claimed in claim 3, characterized in that: the second pad connected with the first circuit board and the second pad connected with the second circuit board are positioned on the same side of the lower surface of the magnetic yoke.
5. The sound generating unit of claim 4, wherein:
and a second groove extending from the side magnetic circuit part attached to the first bonding pad to the second bonding pad is arranged on the lower surface of the magnetic yoke, and the circuit board is arranged in the second groove.
6. The sound generating unit of claim 1, wherein: the cross section of the side magnetic circuit part is in an isosceles trapezoid shape, the short bottom edge of the side magnetic circuit part is close to the central magnetic circuit part, and the first bonding pad of the circuit board is attached to the long bottom edge of the side magnetic circuit part.
7. A sound-emitting monomer according to any one of claims 3 to 6, wherein: the voice coil is formed by winding two voice coil wires together, and the two end parts of each voice coil wire form a wire inlet end and a wire outlet end respectively;
the leading-out positions of the two wire inlet ends are positioned on one side of the voice coil, and the leading-out positions of the two wire outlet ends are positioned on the other side of the voice coil; two incoming terminals are connected to one of the first pads, and two outgoing terminals are connected to the other first pad.
8. The sound generating unit of claim 7, wherein: when the two wire inlet ends respectively penetrate through the corresponding openings, the distance between at least one wire inlet end and the corresponding side magnetic circuit part is gradually reduced from the part close to the magnetic gap to the outer part close to the side magnetic circuit part;
and/or the presence of a gas in the atmosphere,
when the two outlet ends respectively penetrate through the corresponding openings, the distance between at least one outlet end and the corresponding side magnetic circuit part is gradually reduced from the part close to the magnetic gap to the part close to the outer part of the side magnetic circuit part.
9. The sound generating unit according to claim 1 or 6, wherein: three first bonding pads and two second bonding pads are formed on the circuit board;
the voice coil is formed by winding a first voice coil wire and a second voice coil wire together, and the two end parts of each voice coil wire form a wire inlet end and a wire outlet end respectively; the incoming line end of the first voice coil wire is connected to one of the first bonding pads, the outgoing line end of the first voice coil wire and the incoming line end of the second voice coil wire are connected to the other first bonding pad, the outgoing line end of the second voice coil wire is connected to the last first bonding pad, and the internal circuit of the circuit board is configured to be used for electrically connecting one of the second bonding pads with the first bonding pad connected with the incoming line end of the first voice coil wire and electrically connecting the other second bonding pad with the first bonding pad connected with the outgoing line end of the second voice coil wire.
10. The sound generating monomer according to any one of claims 1 to 6, wherein:
the edge part of the diaphragm is fixed above the side magnetic circuit part;
the projection of the diaphragm in the vibration direction thereof is located within the outer contour of the magnetic circuit system.
11. The sound generating unit of claim 10, 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.
12. The sound generating unit of claim 11, wherein:
the edge of the upper surface of the side magnetic conduction plate is provided with a gasket, and the edge part of the vibrating diaphragm is fixed on the gasket.
13. The sound generating unit of claim 11, wherein:
the edge of the side magnetic conduction plate is provided with a flange in an upward protruding mode, and the edge portion of the vibrating diaphragm is fixed to the flange.
14. The utility model provides a vocal module which characterized in that: comprising a module housing and a sound-generating unit according to any one of claims 1 to 13 mounted in the module housing.
15. Electronic terminal, its characterized in that: the terminal comprises a terminal shell and the sounding monomer of any one of claims 1 to 13 mounted in the terminal shell, or the sounding module of claim 14 mounted in the terminal shell.
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| CN2018206294892 | 2018-04-27 | ||
| CN201820629489 | 2018-04-27 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110996232B (en) * | 2019-11-22 | 2021-01-15 | 歌尔股份有限公司 | Sound generating device monomer and electronic equipment |
| CN114125663B (en) * | 2020-08-25 | 2023-01-13 | 华为技术有限公司 | Electroacoustic transducer, loudspeaker module and electronic equipment |
| CN114501259B (en) * | 2021-06-29 | 2023-05-23 | 北京荣耀终端有限公司 | Kernel, loudspeaker module and electronic equipment |
| CN114979912B (en) * | 2022-07-29 | 2022-11-25 | 歌尔股份有限公司 | Sound production device and electronic equipment |
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|---|---|---|---|---|
| KR20010067980A (en) * | 2001-04-12 | 2001-07-13 | 김충지 | Speaker for generating both vibration and sound |
| CN204616073U (en) * | 2015-01-27 | 2015-09-02 | 瑞声光电科技(常州)有限公司 | sound-producing device |
| CN106210993A (en) * | 2016-07-18 | 2016-12-07 | 瑞声科技(新加坡)有限公司 | Voice coil loudspeaker voice coil, the manufacture method of voice coil loudspeaker voice coil and apply the microphone device of this voice coil loudspeaker voice coil |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010067980A (en) * | 2001-04-12 | 2001-07-13 | 김충지 | Speaker for generating both vibration and sound |
| CN204616073U (en) * | 2015-01-27 | 2015-09-02 | 瑞声光电科技(常州)有限公司 | sound-producing device |
| CN106210993A (en) * | 2016-07-18 | 2016-12-07 | 瑞声科技(新加坡)有限公司 | Voice coil loudspeaker voice coil, the manufacture method of voice coil loudspeaker voice coil and apply the microphone device of this voice coil loudspeaker voice coil |
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