3932 results about "Voice coil" patented technology

The invention discloses a sound production device and a sound production 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 sound production device is connected with a magnetic circuit system, the outer periphery of an outer folding ring is connected with a shell, and a voice coil is connected with a first vibrating plate; the diaphragm and the second diaphragm assembly are sequentially arranged on the side, facing the voice coil, of the first diaphragm assembly and located on the outer side of the voice coil, the diaphragm is a flexible piece, the outer edges of the diaphragm and the second diaphragm assembly are both connected with the shell, and the inner edge of the diaphragm and the inner edge of the second diaphragm assembly are both connected with the first vibrating plate. A sound production cavity communicated with the sound outlet hole is formed between the diaphragm and the second vibrating diaphragm assembly; wherein a first rear cavity is defined between the first vibrating diaphragm assembly and the diaphragm, a second rear cavity is defined among the first vibrating diaphragm assembly, the second vibrating diaphragm assembly, the shell and the magnetic circuit system, and the first rear cavity is communicated with the second rear cavity. According to the sound production device, the effective vibration area of the vibration system is increased, and the acoustic performance is improved.

The utility model discloses a sound production device and a sound production module, the sound production device comprises a shell, a magnetic circuit system and a vibration system, and the shell is provided with a first sound outlet hole; the vibration system comprises a first vibrating diaphragm, a second vibrating diaphragm, a middle diaphragm and a voice coil, the first vibrating diaphragm is arranged on one side, far away from the magnetic circuit system, of the shell, the second vibrating diaphragm is arranged on one side, facing the magnetic circuit system, of the first vibrating diaphragm, and the middle diaphragm is arranged between the first vibrating diaphragm and the second vibrating diaphragm; the voice coil is at least partially arranged in the magnetic gap of the magnetic circuit system, and the middle diaphragm and the second diaphragm are located outside the voice coil; the outer edges of the second vibrating diaphragm and the middle diaphragm are connected with the shell, and the inner edges of the second vibrating diaphragm and the middle diaphragm are connected with the first vibrating plate of the first vibrating diaphragm; a second sound production cavity communicated with the first sound production hole is formed between the second vibrating diaphragm and the middle diaphragm; a first rear cavity is defined by the first vibrating diaphragm and the middle diaphragm, and a second rear cavity communicated with the first rear cavity is defined by the first vibrating diaphragm, the second vibrating diaphragm and the shell.

The utility model discloses a sound production device and a sound production module, the sound production device comprises a shell, a magnetic circuit system and a vibration system, and the shell is provided with an accommodating space; the magnetic circuit system is arranged in the accommodating space, the magnetic circuit system comprises a magnet yoke, an inner magnetic part and an edge magnetic part, the inner magnetic part and the edge magnetic part are arranged on the magnet yoke, the edge magnetic part is located on the outer side of the inner magnetic part, a magnetic gap is formed between the inner magnetic part and the edge magnetic part, and the edge magnetic part is provided with a notch; the vibration system comprises a voice coil, at least part of the voice coil is arranged in the magnetic gap, the voice coil is provided with a first protruding part formed by extending into the notch of the side magnetic part, the inner magnetic part is provided with a second protruding part, and the second protruding part and the first protruding part are correspondingly arranged.

The utility model discloses a sound production device, a sound production module and electronic equipment, the sound production device comprises a shell, a magnetic circuit system and a vibration system, the shell is provided with an accommodating space, and the shell is provided with a first sound outlet hole; the magnetic circuit system is arranged in the accommodating space and is provided with a magnetic gap; the vibration system comprises a first vibrating diaphragm, a second vibrating diaphragm, a middle diaphragm and a voice coil, the first vibrating diaphragm is arranged on one side, far away from the magnetic circuit system, of the shell, the second vibrating diaphragm is arranged on one side, facing the magnetic circuit system, of the first vibrating diaphragm, and the middle diaphragm is arranged between the first vibrating diaphragm and the second vibrating diaphragm; the voice coil is at least partially arranged in the magnetic gap, the voice coil is connected with the first diaphragm, and the second diaphragm and the middle diaphragm are located on the outer side of the voice coil; the outer edges of the second vibrating diaphragm and the middle diaphragm are connected with the shell, and the inner edges of the second vibrating diaphragm and the middle diaphragm are connected with the first vibrating diaphragm; and a closed second sound production cavity is formed between the second vibrating diaphragm and the middle diaphragm and is communicated with the first sound outlet hole.

The invention discloses a sound production device and electronic equipment, and relates to the technical field of electroacoustic transduction, a vibrating diaphragm assembly of the sound production device comprises a first vibrating diaphragm, a second vibrating diaphragm and a vibrating plate, the first vibrating diaphragm and the second vibrating diaphragm are arranged at an interval along a first direction and are respectively connected with two ends of a voice coil along the first direction, and the vibrating plate is located at the inner side of the voice coil and is connected with the first direction. The vibrating plate has magnetic conductivity, an edge magnetic part of the magnetic circuit system is arranged between the first vibrating diaphragm and the second vibrating diaphragm and is located on the outer side of the voice coil, two center magnets of a center magnetic part are located on the two opposite sides of the vibrating plate, the two center magnets are magnetized in the first direction, and the magnetizing directions are opposite; the sounding device forms a first cavity and a second cavity on two sides of the vibrating plate, and is provided with a first sounding hole and a second sounding hole which are respectively communicated with the first cavity and the second cavity, and the two central magnets are respectively exposed in the first cavity and the second cavity. According to the sound production device, the BL value is effectively increased, the acoustic performance is improved, and the sound leakage problem of a far field can be reduced.

The invention discloses a sound production device and electronic equipment, and relates to the technical field of electroacoustic transduction, a magnetic circuit system of the sound production device comprises a magnetic conductive yoke, and side magnetic parts, a common magnetic part and two central magnetic parts which are arranged on the magnetic conductive yoke, the side magnetic parts are annularly arranged to form an accommodating space, the common magnetic part is located in the accommodating space and is connected with the side magnetic parts, and the two central magnetic parts are arranged in the accommodating space. The magnetic circuit system is arranged in the containing space to divide the containing space into two installation spaces, each center magnetic part is located in one installation space, the center magnetic parts, the side magnetic parts and the common magnetic part are spaced to define a magnetic gap, the vibration system comprises a vibrating diaphragm assembly and two voice coils, the periphery of the vibrating diaphragm assembly is connected to the shell and is opposite to the magnetic circuit system, and the two voice coils are arranged side by side. One end of each voice coil is connected to the diaphragm assembly, and the other end of each voice coil is suspended in one magnetic gap. According to the sound production device, the size of the voice coil and the magnet volume of the magnetic circuit system are increased, so that the BL value is improved, and the whole machine performance and the sound effect loudness are improved.

The invention discloses a sound production device, a sound production module and electronic equipment, and relates to the technical field of electroacoustic transduction, a vibration plate of a vibration system of the sound production device comprises a first plate part and a second plate part which are located on different horizontal planes, the top of a voice coil is connected with the first plate part, and the second plate part is located on the inner side of the voice coil; a center magnetic part of the magnetic circuit system comprises a first center magnet and a second center magnet which are located on the two opposite sides of the second plate part, the first center magnet is close to the top of the voice coil, and the second center magnet is close to the bottom of the voice coil. The first center magnet and the second center magnet are magnetized in the first direction and are opposite in magnetizing direction, and the magnetic energy product of the first center magnet is larger than that of the second center magnet. According to the sound production device, the thinning design can be realized, the BL value is effectively improved, the magnetic lines are distributed more uniformly, the BLx curve is flatter, and thus the distortion is reduced.

The present invention provides a coaxial speaker including a fixing member, a magnetic circuit system, a voice coil, a first vibration system connected with the voice coil, and a second vibration system connected with the voice coil and arranged surrounding the first vibration system. The second vibration system locates coaxially with the first vibration system. The first vibration system includes a first diaphragm and a first support connecting the first diaphragm and the voice coil. The second vibration system includes a second diaphragm and a second support connecting the second diaphragm and the voice coil. The first diaphragm is used for generating treble sound. The second diaphragm is used for generating bass sound. Bass sound and treble sound form a full-range speaker, providing high-quality sound. Moreover, the assembly process is simplified by sharing voice coil, which improves assembly efficiency and reduces costs.

This application provides a speaker and an electronic device. The speaker includes a ring-shaped housing, a magnetic circuit system, a first diaphragm disposed at a first end of the ring-shaped housing, a first component, a first voice coil, a second diaphragm, a second component, and a second voice coil, a first channel, and the first channel is located in at least one of the magnetic circuit system and the ring-shaped housing. The dual-diaphragm speaker in embodiments of this application has a small volume, and can improve low- and medium-frequency sensitivity.

The utility model relates to the technical field of audio, in particular to a loudspeaker and electronic equipment. The embodiment of the utility model provides a loudspeaker, which comprises a shell, a first vibration assembly, a second vibration assembly, a first magnetic circuit assembly, a second magnetic circuit assembly and a magnetic conductive piece, and the magnetic conductive piece is fixed on the inner side of the shell. The loudspeaker comprises two sets of vibration assemblies, the two sets of vibration assemblies are located on the two side faces of the magnetic conductive part, so that the two sets of vibration assemblies can independently produce sound, the first voice coil can drive the first vibrating diaphragm to vibrate, the second voice coil can drive the second vibrating diaphragm to vibrate, and the loudspeaker can have better low-frequency loudness through cooperation of the first vibrating diaphragm and the second vibrating diaphragm; therefore, the sound quality of the loudspeaker is improved. By arranging the magnetic conductive member, the magnetic circuit design is simplified, and the first magnetic circuit assembly and the second magnetic circuit assembly can be supported, so that the design of the support structure of the loudspeaker is simplified, the thin design of the loudspeaker is facilitated, and the adaptability of the loudspeaker to the application environment is improved.

The invention discloses a sound production device and a sound production 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 a vibration system of the sound production 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 outer periphery of the folding ring part of the second vibrating diaphragm assembly is connected with the shell, the first bending part of the second vibrating plate is connected with the inner edge of the diaphragm, and the outer edge of the diaphragm is connected with the shell, so that a sound production cavity communicated with the sound outlet hole of the shell is formed between the diaphragm and the second vibrating diaphragm assembly; two ends of the rigid connecting piece are respectively connected with the second vibrating diaphragm assembly and the voice coil, so that the voice coil drives the second vibrating diaphragm assembly to vibrate through the rigid connecting piece; wherein the effective vibration area Sd1 of the diaphragm is smaller than the effective vibration area Sd2 of the second diaphragm assembly, and the ratio of the Sd1 to the Sd2 is 1: 1.5-1: 3. According to the sound production device, the effective vibration area of the vibration system is increased, and the acoustic performance is improved.

Disclosed in the present invention are a sound production apparatus, a sound production module, and an electronic device. The sound production apparatus comprises a magnetic circuit system, a conductive support, and a vibration system; the magnetic circuit system is provided with a magnetic gap and a mounting hole; the conductive support is provided in the mounting hole; the vibration system comprises a diaphragm assembly, a voice coil, and centering supports; the diaphragm assembly comprises a diaphragm, a frame, and a dome opposite to the magnetic circuit system; an inner annular hole is formed in the center of the diaphragm; the frame is provided in the inner annular hole and is connected to the diaphragm; the frame is provided with an assembling hole corresponding to the conductive support; the dome covers the assembling hole; one end of the voice coil is connected to the diaphragm or the frame, and the other end of the voice coil is suspended in the magnetic gap; and one end of each centering support is connected to the conductive support, and the other end of the centering support is connected to the frame and electrically connected to a lead of the voice coil. The sound production apparatus of the present invention has low magnetic flux leakage, and the sound production apparatus effectively improves the magnetic field strength and increases the BL value, thereby improving acoustic performance.

The invention discloses a sound production device and a sound production module, and relates to the technical field of electroacoustic transduction, a central magnetic part of a magnetic circuit system of the sound production device comprises a first central magnet, a central magnetic conductive plate and a second central magnet which are stacked, and the magnetizing directions of the first central magnet and the second central magnet are opposite; a receding space is formed between every two adjacent side magnetic parts, the inner side of an inner folding ring of a first vibrating diaphragm assembly of the vibrating system is connected with the center magnetic part, a diaphragm and a second vibrating diaphragm assembly are sequentially arranged on the side, facing the magnetic conductive yoke, of the first vibrating diaphragm assembly, and a sound production cavity communicated with a sound production hole of the shell is formed between the diaphragm and the second vibrating diaphragm assembly. The first extension part of the second diaphragm assembly is correspondingly connected with the second extension part of the diaphragm and extends to the avoiding space, the rigid connecting piece is arranged in the avoiding space, the rigid connecting part of the rigid connecting piece is connected with the first extension part, and the fourth extension part of the rigid connecting piece is connected with the voice coil. According to the sound production device, the effective vibration area of the vibration system is increased, and the acoustic performance is improved.

The invention relates to the technical field of vibration isolation control, discloses an air floating support quasi-zero stiffness active vibration reduction method based on model predictive control, and aims to solve the problems of high vibration isolation requirements of precision equipment in a low-frequency vibration environment, response lag of a traditional vibration isolation technology and insufficient control precision under uncertainty. The method comprises the following steps: step 1, carrying out system modeling on the vibration damping device to obtain a state space model of the vibration damping device, and introducing a Kalman filter into the state space model to predict state information in real time; step 2, constructing an optimization problem and a constraint condition of the MPC controller; step 3, carrying out robustness and stability analysis on the MPC controller; and step 4, fusing sensor data through the MPC controller after robustness analysis, solving an optimization problem through an optimization algorithm, calculating an optimal control input # imgabs0 # in real time, driving a voice coil motor, and suppressing low-frequency vibration.

The invention discloses a workpiece table of a proximity contact type exposure machine. A horizontal driving device has a degree of freedom of movement along an X-axis direction and a Y-axis direction; the rotating table has the freedom degree of rotating around the central axis of the rotating table. The lifting table is arranged above the rotating table and has the degree of freedom of moving in the Z-axis direction; the Z-axis voice coil motor is arranged between the rotating table and the lifting table and used for driving the lifting table to move in the Z-axis direction. The ball bowl leveling assembly is arranged between the wafer carrying table and the lifting table and comprises a ball bowl seat with a bowl-shaped cavity and a ball head matched with the bowl-shaped cavity; a concave cavity is formed in the bottom of the bowl-shaped cavity; the spherical surface of the ball head is in sliding sealing fit with the spherical inner wall surface of the bowl-shaped cavity and seals the concave cavity; the mask frame is arranged above the wafer carrying table. According to the invention, the relative position and posture between the mask plate and the wafer can be adjusted, the accurate control of the leveling process is realized, the high-precision movement of four degrees of freedom of X / Y / Z / RZ is effectively realized, the accurate control of the leveling contact force is realized, and the practicability is high.

The invention discloses a sound production device and electronic equipment, and relates to the technical field of electroacoustic transduction, the sound production device comprises a vibration system and a magnetic circuit system, the magnetic circuit system comprises a magnetic conductive yoke, a central magnetic part and an edge magnetic part, the edge magnetic part and the central magnetic part are spaced to form a magnetic gap, one end of a voice coil of the vibration system is suspended in the magnetic gap, and the other end of the voice coil is suspended in the magnetic gap. The central magnetic part comprises a middle magnetic assembly and a Halbach magnetic circuit arranged around the middle magnetic assembly. The Halbach magnetic circuit comprises a first magnet, a second magnet and a third magnet which are sequentially arranged on the magnetic conductive yoke in a stacked mode. Wherein the first magnet and the third magnet are both magnetized in the direction perpendicular to the vibration direction of the vibration system, the magnetizing direction of the first magnet is opposite to the magnetizing direction of the third magnet, and the second magnet is magnetized in the vibration direction of the vibration system. According to the sound production device, the central magnetic part of the magnetic circuit system is optimized, so that the magnetic induction lines are effectively gathered in the magnetic gap, the BL value is increased, the sensitivity of the sound production device is improved, and the sound effect of the whole machine is improved.

The invention discloses a sound production device and electronic equipment, and relates to the technical field of electroacoustic transduction, a first magnetic gap is formed between an edge magnetic part of a magnetic circuit system of the sound production device and a magnetic conductive yoke, a second magnetic gap is formed between a central magnetic part and the magnetic conductive yoke, a support member is arranged on one side of the magnetic conductive yoke back to the central magnetic part, and the support member and the magnetic conductive yoke enclose to form an airflow cavity; the magnetic conductive yoke is provided with a first through hole communicated with the second magnetic gap and the airflow cavity, the supporting piece is provided with a second through hole communicated with the airflow cavity, a first vibrating diaphragm and a second vibrating diaphragm of the vibrating system are located on the two opposite sides of the magnetic circuit system, and the first vibrating diaphragm is provided with a third through hole communicated with the second through hole. The first voice coil and the second voice coil are arranged in the first magnetic gap and the second magnetic gap respectively, and sound waves of the first side of the second vibrating diaphragm and sound waves of the first side of the first vibrating diaphragm are radiated outwards on the same side of the sound production device together. According to the sound production device, the high-frequency performance is improved, and the vibration area of the vibration system is increased, so that the performance and the effect of the whole machine are improved.

An electronic device is disclosed. The electronic device includes a housing, a first magnetic module, a counterweight base, a motor coil, a supporting plate, a second magnetic module, a bracket module, a vibration module and a voice coil. The housing has an accommodation groove. The first magnetic module is disposed in the accommodation groove. The counterweight base is disposed on the first magnetic module. The motor coil is disposed on the counterweight base and is correspondingly disposed to the first magnetic module. The second magnetic module is correspondingly disposed to the motor coil. The bracket module is disposed in the housing and is located on the second magnetic module. The vibration module is disposed on the bracket module. The voice coil is disposed under the vibration module, passes through the bracket module and is located inside the second magnetic module.

The utility model discloses a sound production device and a sound production module, the sound production device comprises a shell, a magnetic circuit system and a vibration system, the shell is provided with a first sound outlet hole, and the shell comprises a first shell and a second shell; the magnetic circuit system is fixed on the second shell and is provided with a magnetic gap; the vibration system comprises a first vibrating diaphragm, a second vibrating diaphragm, a middle diaphragm and a voice coil, the first vibrating diaphragm is arranged on one side, far away from the magnetic circuit system, of the shell, and the outer edge of the first vibrating diaphragm is fixed on the first shell; the second vibrating diaphragm is arranged on one side, facing the magnetic circuit system, of the first vibrating diaphragm, and the outer edge of the second vibrating diaphragm is clamped between the first shell and the second shell; the middle diaphragm is arranged between the first vibrating diaphragm and the second vibrating diaphragm, and the outer edge of the middle diaphragm is connected with the first shell; the voice coil is at least partially arranged in the magnetic gap; the inner edges of the second vibrating diaphragm and the middle diaphragm are connected with the first vibrating diaphragm; and a closed second sound production cavity is formed between the second vibrating diaphragm and the middle diaphragm and is communicated with the first sound outlet hole.

Provided is a speaker device, including a first frame, a first vibration system, a magnetic circuit system, a second frame, a second vibration system, a second voice coil, and a conductive member electrically connected to the second voice coil. The magnetic circuit system includes a lower splint, a first main magnetic steel, a first sub-magnetic steel, a pole core, a second main magnetic steel, and a second sub-magnetic steel. A magnetization direction of the first sub-magnetic steel is the same as that of the second sub-magnetic steel, a magnetization direction of the first main magnetic steel is the same as that of the second main magnetic steel, and the magnetization direction of the second main magnetic steel is opposite to that of the second sub-magnetic steel. Compared with the related art, the speaker device of the present invention has good acoustic performance.

Disclosed in the present invention are a sound production apparatus and a terminal device. The sound production apparatus comprises a housing, a vibration system, and a magnetic circuit system; in the vibration system, a first vibration assembly comprises a first diaphragm assembly and a first voice coil connected to the first diaphragm assembly, and a second vibration assembly comprises a second diaphragm assembly and a second voice coil connected to the second diaphragm assembly; the first diaphragm assembly and the second diaphragm assembly are respectively connected to two ends of the housing and cover openings, the first voice coil is a rectangular voice coil, and the second voice coil is a racetrack-shaped voice coil; the magnetic circuit system is arranged in an accommodating cavity of the housing, and the magnetic circuit system is provided with a first magnetic gap and a second magnetic gap; the second magnetic gap is arranged around the first magnetic gap, and at least part of the first magnetic gap is communicated with the second magnetic gap; and one end of the first voice coil is suspended in the first magnetic gap, and one end of the second voice coil is suspended in the second magnetic gap. The sound production apparatus of the present invention can reduce the height and weight in the Z direction, thereby reducing the housing vibration caused by the vibration system.

The invention discloses a sewing machine needle dynamic track self-adaptive deviation correction control system, and relates to the technical field of needle control. The fusion acquisition module is used for acquiring data by an industrial camera, a displacement sensor and the like and performing fusion denoising; the dynamic self-adaptive model construction module is used for constructing a track model by means of a deep learning framework in combination with sewing parameters; the multi-dimensional deviation analysis module is used for generating a priority matrix by integrating deviations such as positions and postures; the layered collaborative deviation rectification module plans a deviation rectification path through reinforcement learning and the like; according to the intelligent flexible execution module, flexible deviation correction is achieved through a voice coil motor and a piezoelectric ceramic driver, and all the modules cooperate to guarantee sewing precision. Needle data are accurately collected, a track model is adjusted in real time according to the process, deviation is intelligently analyzed, layered deviation correction is conducted, and compliant control is achieved; meanwhile, the functions of environment perception, fault diagnosis, man-machine interaction and the like are achieved, sewing precision, adaptability and efficiency are improved, and energy consumption is reduced.

The invention discloses a sound production device, a sound production module and electronic equipment, and relates to the technical field of electroacoustic transduction, and the sound production device comprises a first sound production monomer and a second sound production monomer which are arranged side by side along a first direction, the vibrating plates of the first sound production monomer and the second sound production monomer comprise first plate parts and second plate parts which are located on different horizontal planes in the second direction, the first plate parts are connected with the top of the voice coil and the vibrating diaphragm respectively, and the outer peripheries of the second plate parts abut against the inner peripheral wall of the voice coil; the central magnetic parts of the first sound production single body and the second sound production single body comprise a first central magnet and a second central magnet which are positioned on two opposite sides of the second plate part; the first central magnet and the second central magnet are magnetized along a second direction and are opposite in magnetizing direction; the sound production device further comprises a first magnet yoke and a second magnet yoke which are oppositely arranged in the second direction, and the outer edges of the first magnet yoke and the second magnet yoke are connected in a welded mode. According to the sound production device, the BL value is improved, and distortion is reduced.

The invention discloses a sound production device and electronic equipment, and relates to the technical field of electroacoustic transduction, a vibrating diaphragm assembly of a vibrating system of the sound production device comprises a first vibrating diaphragm, a second vibrating diaphragm and a vibrating plate, the first vibrating diaphragm and the second vibrating diaphragm are arranged at an interval along a first direction and are respectively connected with two ends of a voice coil along the first direction, and the vibrating plate is located at the inner side of the voice coil and is connected with the first direction. An edge magnetic part of the magnetic circuit system is arranged between the first vibrating diaphragm and the second vibrating diaphragm and located on the outer side of the voice coil, two center magnets of a center magnetic part are located on the two sides of the vibrating plate in the first direction, the two center magnets are magnetized in the first direction, and the magnetizing directions are opposite; the sounding device forms a first cavity and a second cavity on two sides of the vibrating plate, and is provided with a first sounding hole and a second sounding hole which are respectively communicated with the first cavity and the second cavity, and the two central magnets are respectively exposed in the first cavity and the second cavity. According to the sound production device, the BL value is effectively increased, the acoustic performance is improved, and the sound leakage problem of a far field can be reduced.

Disclosed in the present invention are a sound-producing device, a sound-producing module and an electronic device. The sound-producing device comprises a magnetic circuit system, an electrically conductive bracket and a vibration system, wherein the magnetic circuit system is configured to be square, and the magnetic circuit system comprises a magnetically conductive yoke, and a central magnetic portion and a side magnetic portion, which are arranged on the magnetically conductive yoke; the side magnetic portion is located on the outer side of the central magnetic portion, and the side magnetic portion and the central magnetic portion enclose a magnetic gap; the magnetic circuit system is provided with a mounting hole penetrating the magnetically conductive yoke and the central magnetic portion; the electrically conductive bracket is arranged in the mounting hole; the vibration system comprises a diaphragm assembly opposite the magnetic circuit system, a voice coil and a spider; one end of the voice coil is connected to the diaphragm assembly, and the other end of the voice coil is suspended in the magnetic gap; and one end of the spider is electrically connected to a bonding pad of the electrically conductive bracket, and the other end of the spider is connected to the diaphragm assembly and is electrically connected to a lead wire of the voice coil. The present invention aims to provide the sound-producing device, the size of a magnetic circuit of which is effectively increased. By means of the sound-producing device, the magnetic field intensity is effectively increased, and a BL value is also increased, thereby improving the acoustic performance.

The present invention provides a speaker includes a frame, a vibration system fixed with the frame, a magnetic circuit system driving the vibration system to vibrate and sound, a flexible circuit board and an electrical connector. The vibration system includes a diaphragm and a voice coil driving the diaphragm to vibrate. The flexible circuit board is fixed on a side of the diaphragm distal to the voice coil. The flexible circuit board covers and is fixed with the diaphragm. The electrical connector passes through the diaphragm to electrically connect the flexible circuit board and the voice coil. In present invention, the flexible circuit board does not occupy a space of the magnetic circuit system, and the acoustic performance of the speaker is good.

The invention discloses a sound production monomer and electronic equipment, the sound production monomer comprises a magnetic circuit system, a vibration system and a shell, the magnetic circuit system comprises a magnetic conductive yoke and a magnet assembly arranged on the magnetic conductive yoke, the magnet assembly forms a magnetic gap, and the magnet assembly comprises a first magnet, a second magnet, a third magnet and a fourth magnet, the first magnet and the third magnet are magnetized in the second direction, the magnetizing directions are opposite, the second magnet and the fourth magnet are magnetized in the first direction, the first direction is perpendicular to the second direction, and the polarity of the magnetic pole, facing the first magnet, of the second magnet is the same as that of the magnetic pole, close to one side of the magnetic gap, of the first magnet. The polarity of the fourth magnet towards the third magnet is the same as that of the third magnet close to one side of the magnetic gap, so that the magnet assembly forms a magnetic field enhancement side towards the magnetic gap; the vibration system comprises a vibrating diaphragm and a flat voice coil. The magnet assembly forms a magnetic field enhancement side facing the magnetic gap, so that the magnetic field driving force is improved, and the acoustic performance of the loudspeaker is improved.

A double-sided speaker, comprising a magnetic conductive carrying plate, an auxiliary magnetic conductive member, a side magnetic conductive member, a first magnetic circuit module, a second magnetic circuit module, a first voice coil, a second voice coil, a first vibrating component, and a second vibrating component. The magnetic conductive carrying plate comprises a sidewall and a bottom plate. One side surface of the bottom plate comprises a first side edge and a second side edge opposite to the first side edge. The sidewall is disposed at the first side edge. The auxiliary magnetic conductive member is assembled to the second side edge. The side magnetic conductive member is disposed at a side edge of another side surface of the bottom plate. The first magnetic circuit module is disposed at one side of the magnetic conductive carrying plate, of which the second magnetic circuit module is disposed at another side.

The invention discloses a sound production device and electronic equipment, and relates to the technical field of electroacoustic transduction, the sound production device comprises a magnetic circuit system and a vibration system, a central magnetic part of the magnetic circuit system comprises two central magnetic groups, and an edge magnetic part comprises an outer magnetic group located on the outer sides of the two central magnetic groups and a common magnetic group located between the two central magnetic groups. The outer magnetic group and the common magnetic group are spaced from each central magnetic group so as to define two magnetic gaps which are arranged at intervals, each central magnetic group comprises a first central magnet, a central magnetic conductive plate and a second central magnet which are arranged in a stacked mode, and the outer magnetic group and the common magnetic group each comprise a first edge magnet, an edge magnetic conductive plate and a second edge magnet which are arranged in a stacked mode. The vibration system comprises a vibrating diaphragm and two voice coils, and each voice coil corresponds to one magnetic gap. According to the sound production device, the utilization rate of the magnetic circuit system is further improved by optimizing the magnetic circuit system and adopting the double voice coils, so that the loudness and the sensitivity of the sound production device are improved.

A speaker device includes: a first voice coil; a second voice coil disposed radially outside the first voice coil; a first damper supporting the first voice coil to a frame; and a second damper supporting the second voice coil to the frame, and the first damper includes a recessed portion, which is separated from the second voice coil more than other portion of the first damper, on an extension line of a vibration direction of the second voice coil.