1083 results about "Voice coil" patented technology

The present invention relates to the technical field of sound energy conversion, and disclosed are a sound production apparatus and an electronic device. The sound production apparatus comprises a magnetic circuit system, a first vibration system, a second vibration system, and a housing; the magnetic circuit system is used for forming a first magnetic gap and a second magnetic gap; the first vibration system comprises a first annular diaphragm and a first voice coil, wherein the first voice coil is arranged corresponding to the first magnetic gap; the second vibration system comprises a second diaphragm and a second voice coil; the housing and the first vibration system define a first sound cavity; a side sound outlet hole communicated with the first sound cavity is formed in a side wall of the housing; the housing and the second vibration system define a second sound cavity; and a front sound outlet hole communicated with the second sound cavity is formed in the housing, such that the sound production apparatus can be adapted to a use scenario in which a front sound outlet tube and a side sound outlet tube are provided. Because both the first vibration system and the second vibration system can produce sound, the total radiation area of the sound production apparatus is increased, and the performance of the sound production apparatus is improved.

The utility model discloses a sounding device, a sounding module and an electronic device, and relates to the technical field of electroacoustic transduction, a central magnetic part of a magnetic circuit system of the sounding device comprises a first central magnet, a central magnetic conductive plate and a second central magnet which are stacked, and the inner side of an inner folding ring of a first diaphragm assembly of a vibration system is connected with the central magnetic part. The outer periphery of the outer folding ring is connected with the shell, the diaphragm and the second diaphragm assembly are sequentially arranged on the side, facing the magnetic conductive yoke, of the first diaphragm assembly, the outer edges of the diaphragm and the second diaphragm assembly are both connected with the shell, and the inner edge of the diaphragm is connected with the inner edge of the second diaphragm assembly. And the rigid connecting piece is connected with the second vibrating diaphragm assembly, and the other end of the rigid connecting piece is connected with the voice coil, so that the voice coil drives the second vibrating diaphragm assembly to vibrate through the rigid connecting piece. According to the sounding device, the effective vibration area of a vibration system is increased, and the acoustic performance is improved.

The utility model discloses a double-sided sound production loudspeaker, which comprises a shell, a magnetic circuit system and a vibration unit, the magnetic circuit system comprises a magnetic conductive seat connected with the shell, the magnetic conductive seat comprises a main magnetic plate and side magnetic plates, the side magnetic plates are respectively arranged on two sides of the main magnetic plate along a first direction at intervals, the main magnetic plate is provided with a main magnetic unit, and the main magnetic unit is provided with a plurality of vibration units. An edge magnetic unit is arranged on the edge magnetic plate; the vibrating unit comprises vibrating diaphragms and voice coils, the two vibrating diaphragms are arranged on the shell in a spaced mode in the second direction, the voice coils are arranged on the two vibrating diaphragms, and the voice coils are located between the main magnetic unit and the side magnetic units. According to the double-sided sounding loudspeaker, the two sides of the magnetic circuit system are respectively provided with one vibration unit, so that the two voice coils can form two independent magnetic fields through the main magnetic unit and the side magnetic units respectively, double-sided sounding is realized, the two magnetic fields share one magnetic conductive seat, the space occupied by the magnetic circuit system along the first direction is reduced, and the space occupied by the magnetic circuit system along the second direction is reduced. And the miniaturization and thinning development of the double-sided sounding loudspeaker is facilitated.

The invention discloses an active vibration suppression and deformation compensation device for high-precision thin-walled part machining, and relates to the technical field of machining equipment. The device comprises a base module, a clamping positioning module, a multi-source sensing monitoring module, a cooperative actuation vibration suppression module, a multi-point flexible compensation module, an intelligent control module and a machine tool cooperative interface module. The multi-source sensing monitoring module synchronously collects vibration, deformation, cutting force and temperature signals in the machining process. The intelligent control module processes signals and drives the cooperative actuation vibration suppression module (including a piezoelectric actuator group and a voice coil motor follow-up supporting unit) to perform broadband vibration suppression, and meanwhile drives the multi-point flexible compensation module (including a flexible supporting matrix and a path compensation interface) to perform local and overall deformation compensation. Synchronous monitoring and active cooperative control of vibration and deformation are achieved through closed-loop control, the machining precision, the surface quality and the machining efficiency of the thin-wall part are remarkably improved, compatibility is good, and the adaptive range is wide.

The present application provides a sound production apparatus and an electronic device. The sound production apparatus comprises a housing, a magnetic circuit assembly, a vibration assembly, and a spider. The magnetic circuit assembly has a first magnetic gap and a second magnetic gap. The vibration assembly comprises a diaphragm component and a voice coil component. The voice coil component comprises a first voice coil disposed corresponding to the first magnetic gap and a second voice coil disposed corresponding to the second magnetic gap. The spider is electrically connected to the voice coil component and an external circuit. The spider comprises a connection arm, a bent arm, and a vibration arm connected in sequence. The connection arm is disposed on the diaphragm component and is electrically connected to the first voice coil and the second voice coil. The vibration arm extends in a bent shape. The bent arm is connected between the connection arm and the vibration arm, and the bent arm extends from an inner end of the vibration arm along a vibration direction of the vibration assembly and is connected to the connection arm. This configuration improves the magnetic field strength of the magnetic circuit assembly, thereby increasing the BL value of the sound production apparatus and ensuring the acoustic performance of the sound production apparatus.

The invention discloses a loudspeaker power adjustment method and device, equipment and a storage medium, and relates to the technical field of electro-acoustic conversion, and the method comprises the steps: determining the impedance of a loudspeaker, and determining the target diaphragm displacement of the loudspeaker based on the impedance; determining the direct current resistance of a voice coil of the loudspeaker, and determining the target voice coil temperature of the loudspeaker based on the direct current resistance; and when the driving power of the loudspeaker is adjusted, keeping the target diaphragm displacement and the target voice coil temperature within respective preset thresholds. According to the invention, the loudspeaker is protected, and the performance of the loudspeaker is remarkably improved.

An electronic device includes a casing, a first sound-emitting device and a second sound-emitting device. The first sound-emitting device includes a basket, a vibration system and a magnetic circuit system. The vibration system includes a diaphragm and a voice coil. The magnetic circuit system includes a magnetic bowl, a magnetic unit and an auxiliary magnetic. The first sound-emitting device further includes an upper shell and a front cavity. The first sound-emitting device further includes a first elastic damping member. The diaphragm, the magnetic bowl, the basket and the first elastic damping member are sealed and enclosed to form a first rear cavity, and the first sound-emitting device, the second sound-emitting device and the casing are enclosed to form a second rear cavity. The sound-emitting device of the present invention with good vibration damping effect, high frequency response sensitivity and better acoustic performance.

The present invention provides a speaker including a first frame, a second frame, a first vibration system, a second vibration system, and a magnetic circuit system. The first vibration system includes a first diaphragm and a first voice coil. The second vibration system includes a second diaphragm and a second voice coil. The magnetic circuit system includes a first main magnet, first auxiliary magnets a second main magnet and second auxiliary magnets. A projection of the second voice coil along a vibration direction of the speaker is located in the first voice coil, and the projection of the first voice coil on the magnetic circuit system along the vibration direction of the speaker is located on the second auxiliary magnet. In present invention, the BL of the first voice coil is increased, the sensitivity of the speaker is improved, and the loudness becomes larger.

The utility model discloses a sounding device and a sounding module, and relates to the technical field of electroacoustic transduction, the inner side of an inner folding ring of a first vibrating diaphragm assembly of the sounding device is connected with a central magnetic part, and a diaphragm and a second vibrating diaphragm assembly are sequentially arranged on one side, facing a magnetic conductive yoke, of the first vibrating diaphragm assembly; the diaphragm is arranged in the shell, a sound production cavity communicated with a sound production hole of the shell is formed between the diaphragm and the second diaphragm assembly, the diaphragm is a flexible piece, and the two ends of the rigid connecting piece are connected with the second diaphragm assembly and the voice coil respectively, so that the voice coil drives the second diaphragm assembly to vibrate through the rigid connecting piece; the outer periphery of the outer folding ring and the outer periphery of the diaphragm are both connected with the first shell, the magnetic conductive yoke is connected with the second shell, and the outer periphery of the second diaphragm assembly is clamped between the first shell and the second shell. According to the sounding device, the effective vibration area of a vibration system is increased, and the acoustic performance is improved.

The utility model discloses a sound production device and electronic equipment. The sound production device comprises a shell, a magnetic circuit system, a vibration system and a conductive piece, the magnetic circuit system is connected to the inner side of the shell; the vibration system comprises a first vibrating diaphragm and a second vibrating diaphragm which are respectively positioned on two opposite sides of the magnetic circuit system, and a first voice coil and a second voice coil which are respectively connected with the first vibrating diaphragm and the second vibrating diaphragm; the conductive part is arranged on the shell and provided with a first bonding pad, a second bonding pad and an outer conductive part, the first bonding pad and the second bonding pad are arranged in the first direction and are close to the first vibrating diaphragm and the second vibrating diaphragm respectively, the first direction is the vibration direction of the vibration system, and the second direction is the vibration direction of the vibration system; the first voice coil and the second voice coil are electrically connected with the first bonding pad and the second bonding pad respectively, and the outer conductive part is exposed out of the side surface of the shell and electrically connected with an external circuit. According to the sound production device provided by the invention, the number of the outer conductive parts outside the shell is reduced, the assembly space of the whole machine is saved, and the miniaturization design of a product is facilitated.

The utility model discloses a loudspeaker and an electronic device, relates to loudspeaker structure technical field, the loudspeaker comprises a housing, and a magnetic circuit system and a vibration system connected with the housing, the magnetic circuit system has a magnetic gap, the vibration system comprises a first diaphragm, a voice coil, a middle diaphragm, a second diaphragm and a rigid connecting piece, the voice coil is connected with the first vibrating diaphragm, and at least part of the voice coil is arranged in the magnetic gap; the middle diaphragm is positioned on the second side of the first vibrating diaphragm; the inner peripheral side of the second vibrating diaphragm is connected with the voice coil; the rigid connecting piece is connected between the second vibrating diaphragm and the voice coil; wherein the shell comprises a first shell and a second shell; the first vibrating diaphragm and the middle diaphragm are fixed to the first shell, the magnetic circuit system is fixed to the second shell, the second vibrating diaphragm is clamped between the first shell and the second shell, and the second sound outlet hole is formed in the first shell. The utility model aims to provide the loudspeaker shell structure with small size and high performance.

An audio transducer includes a diaphragm assembly. The diaphragm assembly can include a diaphragm, an attachment portion that circumferentially surrounds the diaphragm, and a flexible surround extending between the diaphragm and the attachment portion. The audio transducer can include a voice coil coupled to the diaphragm where the voice coil has a voice coil lead. The audio transducer can include a carrier that circumferentially surrounds the voice coil. The carrier can include an annular mounting surface, with the attachment portion of the diaphragm assembly being able to attach to the mounting surface, and a channel formed in the mounting surface. The voice coil lead can extend through the channel.

The invention belongs to the technical field of acoustic-electric conversion, and discloses a vibration system of a sound production device and the sound production device. The vibration system of the sounding device comprises a vibrating diaphragm, a vibrating plate and a voice coil assembly. The vibrating diaphragm comprises a central part arranged at the center of the vibrating diaphragm, the vibrating diaphragm is provided with a plurality of mounting holes, and the plurality of mounting holes are arranged around the geometric center of the vibrating diaphragm; the vibrating plate comprises a plurality of vibrating units which are arranged in the mounting holes in a one-to-one correspondence manner; and the voice coil assembly comprises a plurality of voice coils, the plurality of voice coils are in one-to-one correspondence with the plurality of vibration units, and the voice coils are connected to one ends, close to the central part, of the corresponding vibration units. According to the vibration system of the sound production device and the sound production device, the high-frequency characteristic can be improved, and the acoustic performance is ensured.

The invention discloses a sound production device and intelligent glasses, and relates to the technical field of electroacoustic transduction, a first vibration system of a first sound production unit of the sound production device comprises a first vibrating diaphragm assembly and a first voice coil, and a first magnetic circuit system comprises a first magnetic part and a second magnetic part which are arranged on two opposite sides of the first vibrating diaphragm assembly. The first magnetic part and the second magnetic part are respectively provided with a first magnetic gap and a second magnetic gap corresponding to the first voice coil, a second vibration system of the second sound production unit comprises a second vibrating diaphragm assembly and a second voice coil, and a second magnetic circuit system comprises a third magnetic part and a fourth magnetic part which are arranged on two opposite sides of the second vibrating diaphragm assembly. The third magnetic part and the fourth magnetic part are respectively provided with a third magnetic gap and a fourth magnetic gap corresponding to the second voice coil; a first concave edge is formed on the first magnetic part; and / or a second concave edge is formed on the fourth magnetic part. The sound production device provided by the invention has relatively low distortion, can reduce the sound leakage problem of a far field, has good acoustic performance, and is more compact in matching structure with the whole machine.

The present invention provides a speaker including a first frame, a second frame, a first vibration system, a second vibration system, and a magnetic circuit system. The first vibration system includes a first diaphragm and a first voice coil. The second vibration system includes a second diaphragm and a second voice coil. The magnetic circuit system includes a first main magnet, first auxiliary magnets, a second main magnet and second auxiliary magnets. A projection of the first voice coil along a vibration direction of the speaker is located out of the second voice coil, and the projection of the second voice coil along the vibration direction of the speaker is located on the first main magnet. In present invention, the BL of the second voice coil is increased, the sensitivity of the speaker is improved, and the loudness becomes larger.

Provided in the present invention are a sound production unit and an electronic device. The sound production unit comprise: a support; a magnetic circuit system connected to the support and having a first magnetic gap and a second magnetic gap; and a vibration system comprising a first vibration diaphragm and second vibration diaphragm connected to two sides of the support, and a first voice coil and second voice coil connected to the first vibration diaphragm and the second vibration diaphragm, the first voice coil and the second voice coil being respectively located in the first magnetic gap and the second magnetic gap. The first vibration diaphragm comprises a first corrugated rim, a second corrugated rim, and a vibration part, the vibration part being connected to the first voice coil, and the first corrugated rim being connected to the magnetic circuit system. A through hole is provided in the center of the magnetic circuit system, the first corrugated rim surrounding the through hole. Sound waves of the second vibration diaphragm radiate outwards by means of the through hole, and sound waves of the first vibration diaphragm and the second vibration diaphragm radiate outwards on the same side of the sound production unit. Using the present invention can solve the problem that the vibration area and vibration displacement of existing sound production units cannot meet the requirements of wearable audio products such as OWS earphones.

The utility model provides an assembly with an electronic component. The assembly comprises a coiled material belt, a plurality of reinforcing plates arranged at intervals are arranged on the material belt in the belt-shaped extension direction of the assembly, a circuit structure is fixed to each reinforcing plate, and electronic components are welded to the circuit structures. The assembly is in a strip shape with a plurality of circuit structures and can be conveniently and directly input into an injection molding machine for injection molding, bases can be respectively formed below the circuit structures and the reinforcing plates only through one-time injection molding, the injection molding frequency is low, and the production efficiency can be effectively improved. And then the injection-molded component is divided to form independent electronic components, and the reinforcing plate is arranged in the plastic base of each electronic component, so that the structural strength is high. The base in the electronic component can be used as the base of the voice coil motor, and the electronic component can be a Hall element and the like and is used for realizing the closed loop function of the voice coil motor in the camera module.

The invention discloses an earphone defect detection method and device based on voiceprint feature analysis and a storage medium, and relates to the technical field of electroacoustic quality control. According to the method, human ear hearing characteristics are simulated, Mel-cepstrum voiceprint characteristics are extracted from sound response signals, an adaptive weight mechanism based on an equal-loudness curve is introduced, and a voiceprint abnormal deviation index model conforming to human ear subjective perception is constructed; in order to solve the problem that tiny abnormal noise is difficult to recognize, high-order statistics such as kurtosis and skewness are adopted for feature fusion enhancement, and a support vector machine is combined to achieve accurate capture of transient impulse noise. According to the invention, various defect types such as voice coil friction, imbalance of balance degree, diaphragm damage and the like can be fully automatically distinguished, the problems that a traditional test means is disjointed with subjective hearing sense and the omission ratio of hidden defects is high are effectively solved, and the quality inspection efficiency and accuracy of earphone production lines are remarkably improved.

The embodiment of the application provides a magnetic circuit system, a loudspeaker and a vehicle, and belongs to the technical field of loudspeakers.The magnetic circuit system comprises a first magnetic conductor, a second magnetic conductor and a plurality of flat plate-shaped magnetic pieces.The second magnetic conductor is fixed in a containing cavity formed by the side wall of the first magnetic conductor.A plurality of magnetic pieces surround the periphery of the second magnetic conductor.The plurality of magnetic pieces and the second magnetic conductor are both provided with annular gaps with the side wall.The voice coil can be contained in the gap and reciprocally vibrates in the gap.Under the condition of a certain space, the short voice coil long magnetic piece design can be realized, the magnetic field distribution uniformity of the voice coil position is improved, the phenomenon that the voice coil deviates from the center position of the magnetic field during vibration is reduced or avoided, the BL value linear range is improved, the fidelity and performance of the loudspeaker are improved.The flat plate-shaped magnetic piece is easy to process, small in material waste, convenient to magnetize and realize, and reduces the processing and manufacturing cost of the magnetic piece.Under the condition of improving the BL value linear range, the cost of the magnetic circuit system is significantly reduced.

This utility model discloses a sound-generating device and electronic device, relating to the field of electroacoustic transduction technology. The sound-generating device includes a mounting component, a magnetic circuit system, a vibration system, and a rear cover. The mounting component has a first end and a second end connected together, and a mounting cavity is formed within the mounting component. The magnetic circuit system is disposed within the mounting cavity and has a magnetic gap. The vibration system includes a diaphragm and a voice coil connected to the diaphragm. The periphery of the diaphragm is connected to the first end and is opposite to and spaced from the magnetic circuit system. A first rear cavity communicating with the magnetic gap is formed between the diaphragm and the magnetic circuit system. The end of the voice coil furthest from the diaphragm is suspended within the magnetic gap. The rear cover is connected to the second end and is opposite to and spaced from the magnetic circuit system. A second rear cavity is formed between the rear cover and the magnetic circuit system. A ventilation channel communicating with the first and second rear cavities is formed between the mounting component and the magnetic circuit system. This utility model's sound-generating device effectively reduces the product's F0 (Fever), improves the product's power handling capacity, and enhances acoustic performance.

The present application relates to the technical field of public broadcasting and electroacoustic engineering, and discloses a loudspeaker voice coil low-temperature control method and system. Through the design of multiplexing voice coil and superimposed small direct current detection method, the loudspeaker voice coil is simultaneously used as a temperature sensor and a heating element. The temperature of the loudspeaker voice coil can be detected on-line, continuously and accurately through the small direct current detection method. The present application performs intelligent decision-making with strict priority based on temperature state and audio state. The closed-loop temperature control is started only during the standby period of public broadcasting non-broadcasting and when heating is explicitly required. Through the composite control architecture of feedforward pre-arrangement as the main part and feedback fine adjustment as the auxiliary part, the loudspeaker voice coil is smoothly and accurately heated to a safe temperature. Thus, while eliminating feedback lag, the inherent contradiction between the heating speed and temperature overshoot is effectively decoupled, the unification of rapid heating and accurate temperature control is realized, and the loudspeaker is ensured to be in a working state at any time.

The present disclosure relates to "vibration and force cancelling transducer assemblies." An acoustic device is disclosed that includes a housing having a housing wall defining a housing volume; a first mass movably coupled to the housing, the first mass including a sound radiating surface, a voice coil, and a first suspension member; a second mass movably coupled to the housing, the second mass including a magnet assembly and a second suspension member, and wherein the first suspension member couples the first mass to the second mass, the second suspension member couples the magnet assembly to the housing wall, and the second suspension member is tuned to reduce housing vibrations caused by movement of the first mass and the second mass relative to the housing.

The utility model discloses vibration subassembly and micro loudspeaker, vibration subassembly includes rectangular voice coil and middle paste, the middle paste connects rectangular voice coil, the middle paste corresponds rectangular voice coil's at least three angle parts are equipped with angle part positioning convex respectively, each Angle part positioning convex all are located rectangular voice coil's inside, or, each Angle part positioning convex all are located rectangular voice coil's outside. The angle part positioning convex of middle paste at least three form the clamping structure, when rectangular voice coil and middle paste assemble, the clamping structure can limit rectangular voice coil in the preset position, reduce the movement tolerance when rectangular voice coil and middle paste bond, thereby make rectangular voice coil in the position more stable in micro loudspeaker's magnetic gap, improved rectangular voice coil roll vibration, polarization phenomenon, improved the concentricity of micro loudspeaker product, be favorable to improve the sound quality of micro loudspeaker. The angle part positioning convex occupies the small space on the middle paste, will not cause the adverse effect to the structural strength of middle paste.

This invention provides a two-dimensional wave-generating water tank with active wave absorption function driven by a voice coil motor, comprising a wave-generating device, a water tank body, and a force feedback active wave-absorbing device. The force feedback active wave-absorbing device and the wave-generating device are rigidly connected to both sides of the water tank body via brackets. Each includes a voice coil linear motor, a small processor, a magnetic grating displacement sensor, a lever amplification mechanism, and a float. The output end of the voice coil linear motor is connected to the lever amplification mechanism, which is connected to the float. The small processor is connected to the magnetic grating displacement sensor signal. The voice coil linear motor is used to apply a wave-absorbing force f to the float based on the data from the magnetic grating displacement sensor. a (t). This invention is applicable to small and medium-sized wave pools, occupies little space, and has high precision, greatly enriching the application scenarios of wave pools. It is convenient for transportation, installation, debugging, and mobile use in different scenarios, providing a foundation for subsequent classroom demonstrations, student experiments, and equipment sharing.

Improve non-repetitive runout (NRRO) associated with the system's structural dynamics and operating vibrations. [Solution] A data storage device such as a hard disk drive (HDD) includes a rotary pivot bearing assembly of a rotary actuator configured with a bearing span smaller than the maximum available bearing span, thereby reducing the rotary pivot tilt (PT) gain of the corresponding acoustic transfer function relative to the rotational pivot tilt (PT) gain of the original acoustic transfer function corresponding to the maximum available bearing span. To counteract the resulting decrease in coil torsion and rotational pivot tilt frequency, the voice coil is thickened vertically to increase the coil torsion (CT) frequency and rotational pivot tilt frequency, bringing them closer to their values ​​in the original acoustic transfer function. Combining a relatively short bearing span with a relatively thick voice coil ensures and improves performance by maintaining relatively high CT and PT frequencies while guaranteeing a relatively low PT gain.

In an acoustic vibration device that vibrates panel material, a drip-proof structure is added while suppressing an increase in the height dimension. [Solution] The acoustic vibration device 1 comprises a frame 11 fixed to the ceiling interior material 501 side between the ceiling interior material 501 and the outer panel 502 of the vehicle, a vibration unit 12 including a cylindrical body 4 and a magnetic circuit unit 3, a voice coil 52 arranged in the magnetic gap of the magnetic circuit unit 3, a bobbin 51 around which the voice coil 52 is wound, a first damper 61 connecting the cylindrical body 4 and the bobbin 51, a second damper 62 connecting the cylindrical body 4 and the frame 11, and a drip-proof cover 2 to prevent water droplets falling from the outer panel 502 side from adhering to the second damper 62. The drip-proof cover 2 is formed in an annular shape with an open center, is attached to the vibration unit 12, and is positioned on the outer circumference side of the magnetic circuit unit 3 and above the second damper 62. The upper part of the magnetic circuit unit 3 is positioned above the drip-proof cover 2, passing through the opening 23 of the drip-proof cover 2.

This invention relates to the field of photography technology and provides a motion impact suppression system and photographic lens based on a voice coil motor actuation. The system includes: a housing assembly; a guide assembly disposed inside the housing assembly, with a first guide shaft and a second guide shaft symmetrically arranged on both sides of the housing assembly; a member to be protected, sleeved on the first and second guide shafts; a baffle assembly detachably connected to one end of the housing assembly; a first buffer member assembled on the side of the baffle assembly facing the member to be protected; and a second buffer member arranged axially between the member to be protected and the baffle assembly, along with the first buffer member. The first buffer member is used to elastically deform when the member to be protected is impacted to form a primary buffer, and the second buffer member is used to elastically deform together with the first buffer member to form a secondary buffer, thereby forming a graded buffer protection for the member to be protected, significantly improving buffering efficiency.

Aspects of the present disclosure are directed to a speaker system that uses a single driver that results in both force and moment canceling. The speaker system can be mounted within a structure, such as a head mounted display. The speaker system includes a first moving mass, including a sound-producing diaphragm, connected by a primary suspension to a floating basket. The floating basket is both coupled to a second moving mass that controls a voice coil, inducing voice coil movement to produce sound via the diaphragm. A secondary suspension can couple the suspended basket and a fixed frame. The secondary suspension can reduce shaking and contamination generated by the magnet core / motor assembly from seeping into the fixed frame and subsequently to other connected components.

The present disclosure relates to a voice coil motor, an optical image stabilization assembly, a compact camera module, and an electronic device. One example voice coil motor includes a fastening portion, a first movable portion, a second movable portion, a first actuating portion, and a second actuating portion. The first actuating portion and the second actuating portion are respectively configured to drive the first movable portion and the second movable portion to rotate relative to the fastening portion in two mutually perpendicular directions. The first movable portion and the second movable portion limit a degree of freedom of the first movable portion through fit between an arc surface and a support groove, and / or the second movable portion and the fastening portion limit a degree of freedom of the second movable portion through fit between two fulcrum elements and two grooves.

The application discloses a three-freedom-degree large-stroke fast-tool-servo device, which comprises a workbench, a voice coil motor, a Z-direction displacement transmission mechanism, a three-axis connecting mechanism, an X-direction driving platform, a Y-direction driving platform, a tool holder and a tool. The three-axis connecting mechanism comprises a three-axis connecting plate and a three-axis connecting frame, and the three-axis connecting plate is connected with the three-axis connecting frame through X-axis and Y-axis flexible hinges around the three-axis connecting plate. The flexible hinges are provided with Z-axis flexible hinge points. The double-axis flexible hinges are provided with at least one X-axis flexible hinge point and one Y-axis flexible hinge point. The Z-direction displacement transmission mechanism, the three-axis connecting mechanism and the driver connecting rod are designed in an integrated mode. The piezoelectric ceramic driver is adopted. The three-freedom-degree active cutting of the tool can be realized, the large-stroke output capacity is achieved, the machining process of a complex optical surface can be efficiently completed, the displacement errors in multiple directions can be compensated, and the cutting force disturbance problem is solved.