CN114727204A - Sound production vibration device and electronic equipment - Google Patents
Sound production vibration device and electronic equipment Download PDFInfo
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- CN114727204A CN114727204A CN202210484515.8A CN202210484515A CN114727204A CN 114727204 A CN114727204 A CN 114727204A CN 202210484515 A CN202210484515 A CN 202210484515A CN 114727204 A CN114727204 A CN 114727204A
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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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
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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
- H04R9/025—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
- H04R9/045—Mounting
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B2027/0178—Eyeglass type
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- Acoustics & Sound (AREA)
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- Optics & Photonics (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention discloses a sound-producing vibration device and electronic equipment, wherein the sound-producing vibration device comprises a shell, a vibration system, a magnetic circuit system and a coil, the shell forms an accommodating space, the vibration system is arranged in the accommodating space, the magnetic circuit system is suspended in the accommodating space, the vibration system vibrates under the drive of the magnetic circuit system, the coil is fixedly arranged in the accommodating space, the coil is oppositely arranged at two opposite sides of the magnetic circuit system, at least two coils are arranged at the same side of the magnetic circuit system and are used for driving the magnetic circuit system to vibrate, the vibration direction of the magnetic circuit system is parallel to the vibration direction of the vibration system, thus, it is possible to realize the effect of one long coil by at least two coils instead of one long coil, and by at least two coils, therefore, the length of the coil can be correspondingly shortened in the workshop processing process, and the fault tolerance rate of the workshop on the coil processing error can be further improved.
Description
Technical Field
The invention relates to the technical field of electroacoustic conversion, in particular to a sounding vibration device and electronic equipment using the same.
Background
Electronic product equipment especially intelligent glasses equipment, it experiences the function to have audio frequency to experience concurrently usually and vibrate the sense of touch, consequently can close vibration system and coil as an organic whole, promptly, vibration system can use common magnetic circuit with the coil.
Under the circumstances of coil circular telegram, magnetic circuit can realize the effect of vibration in the accommodating space of casing, and for making magnetic circuit produce the vibration, need respectively be provided with a coil in magnetic circuit's relative both sides, and only one coil when one side, under the circumstances that guarantees to drive magnetic circuit vibration, need process the coil to the coil that length is long enough, guarantee that its cross-sectional area is big enough, can satisfy the condition of driving magnetic circuit vibration in order to realize the electric current through the coil, but the length of coil is too long, just produce the machining error easily in production and processing, in case the machining error is too big, can lead to its shape to take place to warp, thereby the electric current that the coil produced can't satisfy the demand of driving magnetic circuit vibration.
The above is only for the purpose of assisting understanding of the technical solutions of the present application, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a sound-producing vibration device and electronic equipment, and aims to solve the technical problem that the performance of the sound-producing vibration device is influenced due to machining errors easily caused by overlong coils because the coils are arranged on two opposite sides of a magnet system and at least two coils are arranged on the same side of a magnetic circuit system.
In order to achieve the above object, the sound-producing and vibrating device provided by the present invention includes a housing, a vibrating system, a magnetic circuit system, and coils, wherein the housing forms an accommodating space, the vibrating system is disposed in the accommodating space, the magnetic circuit system is suspended in the accommodating space, the vibrating system vibrates under the driving of the magnetic circuit system, the coils are fixedly disposed in the accommodating space, the coils are oppositely disposed on two opposite sides of the magnetic circuit system, at least two coils are disposed on the same side of the magnetic circuit system, the coils are used for driving the magnetic circuit system to vibrate, and the vibration direction of the magnetic circuit system is parallel to the vibration direction of the vibrating system.
Optionally, the magnetic circuit system has two opposite long axis sides and two opposite short axis sides, the coils are arranged in pairs opposite to the long axis sides, the number of the coils opposite to the long axis sides on one side of the magnetic circuit system is two, and the two coils are arranged in the housing at intervals along the direction of the long axis sides of the magnetic circuit system.
Optionally, the side wall of the housing is provided with mounting posts, the mounting posts and the coils are arranged in a one-to-one correspondence, and the coils are mounted on the mounting posts so as to be fixedly mounted in the housing.
Optionally, the magnetic circuit system includes a magnetic yoke, an inner magnetic circuit structure, and an outer magnetic circuit structure, the magnetic yoke is suspended in the receiving space, and the inner magnetic circuit structure and the outer magnetic circuit structure are both disposed in the magnetic yoke so as to be suspended in the receiving space.
Optionally, the outer magnetic circuit structure includes two sets of side magnets, the two sets of side magnets are disposed on two long axis sides in an opposite manner, and a magnetic gap is formed between the two sets of side magnets and the inner magnetic circuit structure, where each set of side magnets includes two side magnets, the two side magnets are sequentially mounted on the magnetic yoke along a direction of the long axis side, and the side magnets are disposed corresponding to the coils.
Optionally, the sound-generating and vibrating device further includes two elastic members, the two elastic members are disposed on the short axis side of the magnetic circuit system, one end of each elastic member is connected to the magnetic yoke, and the other end of each elastic member is connected to the housing, so that the magnetic circuit system is suspended in the accommodating space.
Optionally, the sound-generating and vibrating device further comprises a plurality of stop blocks, the stop blocks are fixedly arranged in the accommodating space along the periphery of the shell and are opposite to the peripheral position of the magnetic yoke, and the magnetic yoke is abutted in a limiting mode.
Optionally, the yoke includes installation department and spacing portion, interior magnetic circuit structure with outer magnetic circuit structure install in the installation department, the periphery of installation department is located to spacing portion interval, spacing portion with the backstop piece one-to-one sets up, the backstop piece is right spacing portion butt is spacing.
Optionally, the sound generating and vibrating device further includes a circuit board, the circuit board is disposed in the accommodating space and located on a side of the magnetic circuit system away from the vibrating system, the coil is electrically connected to the circuit board, and a portion of the circuit board is exposed to the outside of the housing and forms a conductive interface for connecting with an external circuit.
In order to achieve the above object, an embodiment of the present invention provides an electronic device, which includes the sound-generating vibration device as described above.
According to the technical scheme, the coils are fixedly arranged on the shell arranged in the sounding and vibrating device and are arranged on two opposite sides of the magnetic circuit system, and at least two coils are arranged on the same side of the magnetic circuit system, so that a long coil can be replaced by at least two coils, and the effect of the long coil can be realized by at least two coils, so that the length of the coil can be correspondingly shortened in the workshop machining process, and the fault tolerance rate of a workshop to the coil machining error can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a vibration device for generating sound according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another embodiment of the sound generating and vibrating device of the present invention;
FIG. 3 is a schematic cross-sectional view of a sound-generating vibration device according to an embodiment of the present invention;
FIG. 4 is an exploded view of an embodiment of the sound vibration device of the present invention;
FIG. 5 is a schematic structural diagram of the coil, the magnetic circuit system, the elastic member and the housing shown in FIG. 4;
FIG. 6 is a schematic view of the yoke shown in FIG. 4;
fig. 7 is a schematic structural diagram of the diaphragm, the housing and the conductive patch shown in fig. 4.
The reference numbers illustrate:
the implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a sound-producing vibration device 100.
In the embodiment of the present invention, as shown in fig. 1 to 7, the sound-generating vibration device 100 includes a housing 10, a vibration system 30, a magnetic circuit system 50, and a coil 70, the housing 10 forms an accommodating space, the vibration system 30 is disposed in the accommodating space, the magnetic circuit system 50 is suspended in the accommodating space, the vibration system 30 vibrates under the driving of the magnetic circuit system 50, the coil 70 is fixedly disposed in the accommodating space, the coil 70 is disposed on two opposite sides of the magnetic circuit system 50, at least two coils 70 are disposed on the same side of the magnetic circuit system 50, the coil 70 is configured to drive the magnetic circuit system 50 to vibrate, and a vibration direction of the magnetic circuit system 50 is parallel to a vibration direction of the vibration system 30.
In the present embodiment, the casing 10 of the sound vibration device 100 is used for mounting, fixing and supporting the components such as the vibration system 30, the magnetic circuit system 50 and the coil 70, that is, the casing 10 provides a mounting base for the components such as the vibration system 30, the magnetic circuit system 50 and the coil 70. The housing 10 has a receiving space for facilitating mounting and protecting the components such as the vibration system 30, the magnetic circuit system 50, and the coil 70. Alternatively, the structure of the housing 10 may be a mounting case, a box, or a box having a receiving space.
It is understood that the housing 10 may be an integral structure or a separate structure. As shown in fig. 4, the housing 10 includes a first housing 11 and a second housing 13, that is, the housing 10 is separated from each other, and the first housing 11 and the second housing 13 are connected to form an integral structure. Of course, in other embodiments, the housing 10 may be formed by an integral molding method, which is not limited herein.
Optionally, part of the structure of the first housing 11 and the second housing 13 of the housing 10 are metal pieces, and the first housing 11 and the second housing 13 are in sealing fit to define an accommodating space, that is, the first housing 11 and the second housing 13 are made of a metal material, so that the overall structure of the housing 10 is made of a metal material.
It can be understood that the first casing 11 and the second casing 13 of the casing 10 can be made of thinner steel sheets, so that the casing 10 can be designed to be thinner, thereby greatly increasing the volume of the accommodating space in the casing 10, effectively increasing the volume of the vibration system 30, the magnetic circuit system 50 and the coil 70 in the accommodating space, and further improving the acoustic performance of the sound-generating vibration device 100. Meanwhile, the vibration system 30 is fixed in the casing 10, so that heat dissipation can be achieved by the casing 10 made of a metal material, and the heat dissipation performance of the sound vibration device 100 is improved.
It is understood that the magnetic circuit system 50 driven by the coil 70 to vibrate may be the magnetic yoke 51 and the inner magnetic structure 53, may also be the magnetic yoke 51 and the outer magnetic structure 55, and may also be the magnetic yoke 51, the inner magnetic structure 53 and the outer magnetic structure 55, which is not limited herein; in addition, the number of the coils 70 may be two, four, or six, and the coils 70 on the two opposite sides of the magnetic circuit system 50 need to always keep the current directions opposite.
It is understood that the vibration direction of the magnetic circuit system 50 is parallel to the vibration direction of the vibration system 30, that is, the vibration system 30 is driven by the magnetic circuit system 50 to vibrate, and the vibration direction of the magnetic circuit system 50 needs to be parallel to the vibration direction of the vibration system 30. With this arrangement, when the vibration system 30 and the magnetic circuit system 50 vibrate simultaneously, the vibration directions of the two remain opposite, so that the vibration effect of the magnetic circuit system 50 can cancel the vibration effect of the vibration system 30. In addition, the magnetic circuit system 50 is parallel to the vibration direction of the vibration system 30, so that the interference of the internal structure of the sound-generating vibration device 100 can be effectively avoided, and the structural stability is not affected.
The sound-generating vibration device 100 of the invention utilizes the accommodating space arranged in the shell 10 to install, fix and protect the vibration system 30, the magnetic circuit system 50 and the coil 70, and simultaneously the coil 70 and the vibration system 30 share the magnetic circuit system 50, thereby effectively improving the integration level of the sound-generating vibration device 100 and saving the occupied space of the sound-generating vibration device 100 in electronic equipment; meanwhile, through locating coil 70 in the accommodating space, and locate magnetic circuit 50 in the accommodating space with suspension, so that two coils 70 can be utilized to drive magnetic circuit 50 to vibrate in the accommodating space, in order to realize the motor vibration function, in order to make sound production vibration device 100 have the vibration touch experience function, simultaneously, when vibration system 30 produces sound, coil 70 can drive magnetic circuit 50 to vibrate, in order to offset the vibration that vibration system 30 takes place, the vibration function and the sound production function of sound production vibration device 100 can be realized respectively, and do not interfere each other, in order to make sound production vibration device 100 have audio frequency experience and vibration touch experience function concurrently, promote user's experience sense. And an original strip-shaped coil 70 is split into two short coils 70, so that the electromagnetic coupling effect of the strip-shaped coil 70 and the magnetic circuit system 50 is realized through the two coils 70, and therefore, when two coils 70 are processed in a workshop, the length of the coil 70 can be relatively shortened, the problem that the shape of the coil 70 is easily deformed in the processing process can be avoided, the fault tolerance of the processing error of the workshop can be improved, and the yield of the sound-generating vibration device 100 during processing is improved.
In an embodiment of the present invention, as shown in fig. 4 to 6, the magnetic circuit system 50 has two opposite long axis sides and two opposite short axis sides, the coils 70 are arranged in pairs with respect to the long axis sides, the number of the coils 70 opposite to the long axis sides on one side of the magnetic circuit system 50 is two, and the two coils 70 are arranged at intervals in the direction of the long axis sides of the magnetic circuit system 50 in the housing 10.
In the present embodiment, the magnetic circuit system 50 has two major axis sides and two minor axis sides, and it can be understood that the inner magnetic circuit structure 53 in the magnetic circuit system 50 has a major axis side and a minor axis side, so that the housing 10 naturally has a major axis side and a minor axis side when the inner magnetic circuit structure 53 is installed in the housing 10, and therefore, the two coils 70 are arranged in the accommodating space at intervals along the major axis side of the inner magnetic circuit structure 53 of the magnetic circuit system 50, the arrangement positions of the components in the accommodating space can be well utilized for installation, and the space occupied by the coils 70 for the housing 10 is rationalized.
In an embodiment of the invention, as shown in fig. 4 to 6, the side wall of the housing 10 is provided with mounting posts 131, the mounting posts 131 and the coils 70 are disposed in a one-to-one correspondence, and the coils 70 are mounted on the mounting posts 131 to be fixedly mounted in the housing.
In this embodiment, the mounting post 131 may be an integral structure or a separate structure with the side cavity wall, and is not limited herein, the coil 70 needs to be fixed in the accommodating space and then powered on, and the magnetic circuit system 50 is driven to vibrate through electromagnetic coupling with the magnetic circuit system 50, so that when the mounting post 131 is provided, a worker only needs to wind the coil 70 and then mount the coil 70 on the mounting post 131, so as to achieve the fixed mounting of the coil 70 in the accommodating space, and the protrusion height value of the mounting post 131 may be determined according to the height value of the wound coil 70, and is not specifically limited herein, as long as the fixed mounting of the coil 70 in the accommodating space is ensured; in addition, the two mounting posts 131 may be arranged at intervals along the height direction of the housing 10, or may be arranged at intervals along the length direction of the housing 10, that is, along the long axis side direction of the aforementioned inner magnetic circuit structure 53, and the positions of the two mounting posts 131 may be correspondingly arranged according to the positions where the two coils 70 are required to be mounted, without being particularly limited herein.
In an embodiment of the present invention, in the protruding direction of the mounting post 131, the protruding height of the mounting post 131 is greater than the height of the coil 70 after winding.
In this embodiment, the mounting pillar 131 is formed in a protruding manner on a side wall of the housing 10, in a protruding direction of the mounting pillar 131, a protruding height value of the mounting pillar 131 is greater than a height value of the wound coil 70, that is, the mounting pillar 131 protrudes from the coil 70, when at least a part of the structure of the magnetic circuit system 50 vibrates, a certain polarization occurs in a circumferential direction of at least a part of the structure of the magnetic circuit system 50, when the mounting pillar 131 protrudes from the coil 70, at least a part of the structure of the magnetic circuit system 50 may impact the protruding mounting pillar 131, and may not impact the coil 70 mounted on the mounting pillar 131, so as to ensure durability of the coil 70, and further ensure durability of the sound-emitting vibration device 100.
In an embodiment of the present invention, as shown in fig. 3 to 4, the magnetic circuit system 50 includes a magnetic yoke 51, an inner magnetic structure 53, and an outer magnetic structure 55, the magnetic yoke 51 is suspended in the accommodating space, and both the inner magnetic structure 53 and the outer magnetic structure 55 are disposed in the magnetic yoke 51 to be suspended in the accommodating space.
In the present embodiment, the magnetic circuit system 50 includes a magnetic yoke 51, an inner magnetic circuit structure 53 and an outer magnetic circuit structure 55, and it can be understood that the magnetic yoke 51 is used to realize magnetic conduction and magnetic convergence effects for the inner magnetic circuit structure 53 and the outer magnetic circuit structure 55; meanwhile, the inner magnetic circuit structure 53 and the outer magnetic circuit structure 55 can be suspended in the accommodating space through the magnetic yoke 51, after the coil 70 is electrified with an external circuit, the two coils 70 can drive the magnetic yoke 51, the inner magnetic circuit structure 53 and the outer magnetic circuit structure 55 suspended in the accommodating space to vibrate so as to counteract the vibration generated by the vibration system 30, namely, the force generated by the vibration of the magnetic yoke 51, the inner magnetic circuit structure 53 and the outer magnetic circuit structure 55 and the force generated by the vibration of the voice coil 33 of the vibration system 30 always keep opposite directions, and meanwhile, when the vibration system 30 does not work, the two coils 70 can also be electrified normally, so that the magnetic yoke 51, the inner magnetic circuit structure 53 and the outer magnetic circuit structure 55 can continuously vibrate, a vibration touch experience function is provided for a user, and the experience of the user is improved.
In addition, the inner magnetic path structure 53 includes a central magnet 531 and a central magnetic conductive plate 553, the central magnet 531 is fixedly mounted on the magnetic yoke 51 to be suspended in the accommodating space, and the central magnetic conductive plate 533 is disposed on a side of the central magnet 531 away from the magnetic yoke.
In an embodiment of the present invention, as shown in fig. 3, the outer magnetic path structure 55 includes two sets of side magnets 551, two sets of side magnets 551 are disposed on two long axis sides of the magnetic path system 50, and a magnetic gap is formed between the two sets of side magnets 551 and the inner magnetic path structure 53, wherein each set of side magnets 551 includes two side magnets 551, the two side magnets 551 are sequentially mounted on the magnetic yoke 51 along the direction of the long axis sides of the inner magnetic path structure 53, and the side magnets 551 are disposed corresponding to the coils 70.
It should be noted that the outer magnetic circuit structure 55 may be a unitary ring structure, and the inner magnetic circuit structure 53 is disposed within the ring of the outer magnetic circuit structure 55 and spaced apart from the outer magnetic circuit structure 55 to form a magnetic gap. Of course, in other embodiments, the outer magnetic circuit structure 55 may be a plurality of split structural components, and the plurality of split structural components are disposed at intervals around the inner magnetic circuit structure 53, which is not limited herein; furthermore, side magnets 551 are provided with side magnetic plates 553 on the side away from yoke 51, and the number of side magnetic plates 553 corresponds to the number of side magnets 551.
In this embodiment, two outer magnetic circuit structures 55 are provided, two outer magnetic circuit structures 55 are oppositely disposed on two long axis sides of the inner magnetic circuit structure 53, and the voice coil 33 of the vibration system 30 is suspended in the magnetic gap formed between the two outer magnetic circuit structures 55 and the inner magnetic circuit structure 53. Meanwhile, when the outer magnetic circuit structure 55 only adopts one side magnet 551, and in order to ensure that the voice coil 33 of the magnetic gap driving vibration system 30 vibrates, the side magnet 551 needs to be lengthened, and at this time, the lengthened side magnet 551 is easy to break due to its overlong length in the transportation or use process, and the like, so that one lengthened side magnet 551 is split into two pieces, so that one lengthened side magnet 551 is replaced by two side magnets 551, and the two side magnets 551 can be ensured not to break due to the overlong length under the condition of reduced length, thereby ensuring the durability of the product.
In an embodiment of the present invention, as shown in fig. 4 to 6, the sound-generating and vibrating device 100 further includes two elastic members 90, the two elastic members 90 are disposed opposite to the short axis side of the magnetic circuit system 50, one end of the elastic member 90 is connected to the yoke 51, and the other end of the elastic member 90 is connected to the housing 10, so that the magnetic circuit system 50 is suspended in the accommodating space.
In the present embodiment, by providing two elastic members 90, on one hand, the mounting stability of the magnetic yoke 51 can be improved by the elastic members 90, and the magnetic yoke 51, the inner magnetic path structure 53 and the outer magnetic path structure 55 are ensured to be suspended in the accommodating space; on the other hand, the elastic member 90 may also generate an elastic damping force and a directional moving force against the vibration of the yoke 51, the inner magnetic path structure 53, and the outer magnetic path structure 55.
In an embodiment of the present invention, as shown in fig. 4 to 5, the sound-generating and vibrating device 100 further includes a plurality of stop blocks 133, and the stop blocks 133 are fixed in the accommodating space along the periphery of the housing 10 and are opposite to the periphery of the yoke 51 to limit the yoke 51.
In this embodiment, the stop block 133 may be an integral structure or a separate structure with respect to the receiving space of the housing 10, and is not limited herein, when the yoke 51 drives the outer magnetic circuit structure 55 and the inner magnetic circuit structure 53 to vibrate under the driving of the coil 70, the stop block 133 may limit the amplitude of the yoke 51 to prevent the yoke 51 from vibrating too much and damaging other components in the receiving space, the stop block 133 includes a connecting portion, a first stop portion and a second stop portion, the connecting portion is connected to the housing 10 and connected to the first stop portion, the first stop portion extends along the long axis side direction of the magnetic circuit 50 and is in limit abutting fit with the yoke 51 to realize the limit of the yoke 51 in the vibration direction, and the stop block 133 may also form a limit to the yoke 51 in the horizontal direction by corresponding to the peripheral position of the yoke 51 to ensure the balance of the whole yoke 51 when abutting, one side of first backstop portion is located to second backstop portion to both are the contained angle setting, and the contained angle can be 90 degrees, so that both are perpendicular settings, and second backstop portion extends along the vibration direction, and with the spacing butt cooperation of yoke 51, realize to yoke 51 spacing on the horizontal direction, first backstop portion and second backstop portion all can be square structure's backstop board, to magnetic circuit 50's spacing stability when in order to realize improving spacing.
In an embodiment of the present invention, as shown in fig. 5 to 6, the yoke 51 includes a mounting portion 511 and a limiting portion 513, the inner magnetic circuit structure 53 and the outer magnetic circuit structure 55 are mounted on the mounting portion 511, the limiting portion 513 is disposed at a periphery of the mounting portion 511 at an interval, the limiting portion 513 is disposed corresponding to the stopper 133, and the stopper 133 abuts against and limits the limiting portion 513.
In this embodiment, the mounting portion 511 and the limiting portion 513 may be an integral structure or a separate structure, which is not limited herein, the number of the limiting portion 513 may be four, and correspondingly, the number of the stop block 133 may be four, when the magnetic yoke 51 drives the inner magnetic circuit structure 53 and the outer magnetic circuit structure 55 to vibrate, the stop block 133 may be capable of achieving abutting limitation with the limiting portion 513, so as to limit the amplitude of the magnetic yoke 51, the inner magnetic circuit structure 53, and the outer magnetic circuit structure 55 in the receiving space, and meanwhile, achieve limitation of the magnetic circuit system 50 in the horizontal direction.
In an embodiment of the present invention, as shown in fig. 2 and fig. 4, the sound generating and vibrating device 100 further includes a circuit board 60, the circuit board 60 is disposed in the accommodating space and located on a side of the magnetic circuit system 50 away from the vibrating system 30, the coil 70 is electrically connected to the circuit board 60, and a portion of the circuit board 60 is exposed outside the housing 10 and forms a conductive interface 61 for connecting with an external circuit.
In the present embodiment, the circuit board 60 may be a flexible circuit board, such that one end of the circuit board 60 is adhered to the bottom wall of the accommodating space of the housing 10, and the other end of the circuit board 60 faces the coil 70 and is electrically connected to the coil 70, and a part of the structure extends to the outside of the housing 10, so as to implement conduction with the external circuit; here, the coils 70 and the circuit board 60 are electrically connected in series or in parallel, and the current directions of the coils 70 on both sides are opposite.
In an embodiment of the present invention, as shown in fig. 2 and 7, the vibration system 30 includes a vibrating diaphragm 31 and a voice coil 33, a periphery of the vibrating diaphragm 31 is connected to the casing 10, one end of the voice coil 33 is connected to the vibrating diaphragm 31, one end of the voice coil 33 away from the vibrating diaphragm 31 is suspended in the magnetic circuit system 50, one side of the vibrating diaphragm 31 close to the voice coil 33 is provided with a plurality of conductive portions 311, the plurality of conductive portions 311 are arranged at intervals along the periphery of the vibrating diaphragm 31 and are electrically connected to the voice coil 33, the plurality of conductive embedded sheets 20 are installed in the casing 10, one end of the conductive embedded sheet 20 is electrically connected to the conductive portions 311, and the other end of the conductive embedded sheet is used for circuit connection with the outside.
In the present embodiment, the periphery of the diaphragm 31 of the vibration system 30 is connected to the housing 10 to realize the fixed installation of the vibration system 30. One end of voice coil 33 is connected with vibrating diaphragm 31, the other end of voice coil 33 is suspended in the magnetic gap of magnetic circuit 50, so after the current is passed through in voice coil 33, voice coil 33 converts the electric energy into mechanical vibration in the magnetic field that inner magnetic circuit structure 53 and outer magnetic circuit structure 55 of magnetic circuit 50 formed, so that voice coil 33 drives vibrating diaphragm 31 to vibrate and make a sound, thereby realize that mechanical energy is converted into sound signal, one side that vibrating diaphragm 31 is close to voice coil 33 is equipped with a plurality of conductive parts 311, conductive part 311 can be four, namely, four conductive parts 311 are respectively located vibrating diaphragm 31 along its periphery four corners, and the lead wire of conductive part 311 and voice coil 33 can be realized being connected through conductive adhesive, and then under the condition of conductive part 311 of one end of conductive embedded piece 20, the other end can stretch out the casing and carry out electric connection with external circuit.
In an embodiment of the present invention, as shown in fig. 2 to 4, the sound-generating and vibrating device 100 further includes a mesh 80, a pressure relief hole 135 is formed in a side of the casing 10 away from the magnetic circuit system 50, the pressure relief hole 135 is communicated with the accommodating space, and the mesh 80 is disposed on a side of the casing 10 close to the magnetic circuit system 50 and covers the pressure relief hole 135.
In this embodiment, in order to reduce the vibration resistance of the vibrating diaphragm 31 in the vibration system 30 and adjust the acoustic performance, the bottom of the casing is provided with the pressure relief hole 135 to balance the air pressure, and the mesh fabric 80 covers the pressure relief hole 135 to filter some external impurities, the mesh fabric 80 may be a mesh fabric, and the mesh fabric has the characteristics of weaving precision, mesh rule, reliable filtering precision, high compressive strength and the like.
In an embodiment of the present invention, as shown in fig. 3 to 4, the sound generating and vibrating device 100 further includes a damping member 40, wherein the damping member 40 is disposed between the magnetic circuit system 50 and the housing 10, and elastically abuts against a side of the magnetic circuit system 50 away from the vibrating system 30.
In this embodiment, the damping member 40 may be made of foam, and the damping member 40 may be connected to the magnetic yoke 51 and the casing 10 in a sticking manner, and the existence of the damping member 40 may reduce the vibration amplitudes of the magnetic yoke 51, the outer magnetic structure 55 and the inner magnetic structure 53, so as to ensure that other components in the sound-generating vibration device 100 are not damaged when the magnetic circuit system 50 vibrates, thereby ensuring the durability of the sound-generating vibration device 100.
In one embodiment, as shown in fig. 4, the sound generating and vibrating device 100 further includes a front cover 91, and the front cover 91 covers a side of the diaphragm 31 facing away from the voice coil 33 and is connected to the housing 10. It will be appreciated that the front cover 91 is provided so as to protect the diaphragm 31 of the vibration system 30 by the front cover 91.
In one embodiment, as shown in fig. 7, the diaphragm 31 includes a central portion, a folded ring portion surrounding the central portion, and a fixing portion connected to an outer side of the folded ring portion, a periphery of the fixing portion is connected to an inner wall of the casing 10, and the reinforcing member 35 is disposed in the central portion.
In an embodiment of the present invention, as shown in fig. 4, the sound vibration device 100 further includes a centering disk 92, one end of the centering disk 92 is connected to one end of the voice coil 33 away from the diaphragm 31, and the other end of the centering disk 92 is connected to the housing 10.
In this embodiment, by providing the centering branch 92, on one hand, the centering branch 92 is utilized to effectively prevent the voice coil 33 from polarization and vibration, and on the other hand, the centering branch 92 is utilized to realize the conduction between the voice coil 33 and the external circuit.
It is understood that the centering disk 92 may be a unitary structure, or may be two or four separate structures. In the present embodiment, the centering fins 92 include two centering fins 92 disposed on two opposite sides of the voice coil 33.
In addition, the present invention also provides an electronic device (not shown in the figures) comprising the sound generating vibration device 100 as described above.
It should be noted that, the detailed structure of the sound-generating vibration device 100 can refer to the above-mentioned embodiment of the sound-generating vibration device 100, and is not described herein again; since the sound-generating and vibrating device 100 is used in the electronic device of the present invention, the embodiment of the sound-generating and vibrating device 100 of the present invention includes all technical solutions of all embodiments of the sound-generating and vibrating device 100, and the achieved technical effects are also completely the same, and are not described herein again.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, which are directly or indirectly applied to the present invention, are included in the scope of the present invention.
Claims (10)
1. A sound generating vibration device, comprising:
a housing forming a receiving space;
the vibration system is arranged in the accommodating space;
the magnetic circuit system is suspended in the accommodating space, and the vibration system vibrates under the driving of the magnetic circuit system;
the coil is fixedly arranged in the accommodating space, the coil is oppositely arranged on two opposite sides of the magnetic circuit system, at least two coils are arranged on the same side of the magnetic circuit system, the coil is used for driving the magnetic circuit system to vibrate, and the vibration direction of the magnetic circuit system is parallel to that of the vibration system.
2. A sound generating and vibrating device as defined in claim 1, wherein said magnetic circuit system has two major axis sides opposed to each other and two minor axis sides opposed to each other, said coils being arranged in pairs with respect to said major axis sides, the number of said coils opposed to said major axis sides on one side of said magnetic circuit system being two, and said two coils being arranged at intervals in said case along the direction of said major axis sides of said magnetic circuit system.
3. The acoustic vibration device according to claim 2, wherein the side wall of the housing is provided with mounting posts, the mounting posts are arranged in one-to-one correspondence with the coils, and the coils are mounted on the mounting posts to be fixedly mounted on the housing.
4. A sound-generating vibration device as claimed in claim 2, wherein said magnetic circuit system comprises a magnetic yoke, an inner magnetic circuit structure and an outer magnetic circuit structure;
the magnet yoke is suspended in the accommodating space, and the inner magnetic circuit structure and the outer magnetic circuit structure are both arranged in the magnet yoke so as to be suspended in the accommodating space.
5. A sound-generating vibration device as defined in claim 4, wherein said outer magnetic circuit structure includes two sets of side magnets disposed opposite to each other on said two long axis sides, and a magnetic gap is formed between said two sets of side magnets and said inner magnetic circuit structure;
each group of side magnets comprises two side magnets, the two side magnets are sequentially arranged on the magnetic yoke along the direction of the long shaft side, and the side magnets and the coils are arranged correspondingly.
6. The sound vibration device as claimed in claim 4, further comprising two elastic members disposed opposite to each other on the short axis side of the magnetic circuit system;
one end of the elastic piece is connected with the magnetic yoke, and the other end of the elastic piece is connected with the shell, so that the magnetic circuit system is suspended in the accommodating space.
7. The sound vibration device of claim 4, further comprising a plurality of stop blocks, wherein the stop blocks are fixedly arranged in the accommodating space along the periphery of the housing and are opposite to the periphery of the magnetic yoke for limiting and abutting against the magnetic yoke.
8. The sound vibration device of claim 7, wherein said yoke comprises:
the inner magnetic circuit structure and the outer magnetic circuit structure are arranged on the mounting part;
the limit portion is arranged at the periphery of the installation portion at intervals, the limit portion is in one-to-one correspondence with the stop blocks, and the stop blocks are abutted to the limit portion in a limiting mode.
9. The sound vibration device of claim 1, further comprising a circuit board;
the circuit board is arranged in the accommodating space, the circuit board is fixed on the shell and is positioned on one side of the magnetic circuit system, which is far away from the vibration system, the coil is electrically connected with the circuit board, and part of the circuit board is exposed outside the shell and forms a conductive interface for being connected with an external circuit.
10. An electronic device characterized in that it comprises a sound-emitting vibration device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210484515.8A CN114727204A (en) | 2022-04-29 | 2022-04-29 | Sound production vibration device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210484515.8A CN114727204A (en) | 2022-04-29 | 2022-04-29 | Sound production vibration device and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114727204A true CN114727204A (en) | 2022-07-08 |
Family
ID=82231410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210484515.8A Pending CN114727204A (en) | 2022-04-29 | 2022-04-29 | Sound production vibration device and electronic equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN114727204A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118283505A (en) * | 2024-06-04 | 2024-07-02 | 瑞声光电科技(常州)有限公司 | Loudspeaker with multiple magnetic circuit structures |
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| CN203912171U (en) * | 2014-05-30 | 2014-10-29 | 歌尔声学股份有限公司 | Loudspeaker monomer |
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| KR20040084363A (en) * | 2003-03-28 | 2004-10-06 | 에스텍 주식회사 | Speaker for generating both vibration and sound |
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| CN118283505A (en) * | 2024-06-04 | 2024-07-02 | 瑞声光电科技(常州)有限公司 | Loudspeaker with multiple magnetic circuit structures |
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