35results about How to "Increase the effective vibration area" patented technology

The invention provides a moving-coil type electro-acoustic transducer, which is used for breaking through the limitation in magnetic flux and effective vibrating area of a vibrating film of the moving-coil type electro-acoustic transducer with a traditional structure under the condition of a specified size, improving the output acoustic property of the moving-coil type electro-acoustic transducer and reducing the vibration frequency.

The invention discloses a coupler synchronous type double-horizontal shaft vibration stirring machine, which comprises a machine frame and a vibration stirring device installed on the machine frame. Stirring drive and transmission devices are arranged at the left end of the vibration stirring device. Vibration drive and transmission devices are arranged at the right end of the vibration stirring device. The stirring drive and transmission devices and the vibration drive and transmission devices are installed on the machine frame. The vibration stirring device comprises a stirring cylinder and two stirring mechanisms. Both the two stirring mechanisms comprise hollow stirring shafts and a plurality of stirring units. The two stirring drive and transmission devices are respectively installed at the left ends of the two hollow stirring shafts. Synchronous couplers are installed between the two stirring drive and transmission devices. The two vibration drive and transmission devices are respectively installed at the right ends of the two hollow stirring shafts and respectively and fixedly connected with two vibration shafts. The coupler synchronous type double-horizontal shaft vibration stirring machine disclosed by the invention is simple and rational in structure and convenient for use; and mixed materials can be uniform in macroscopic and microscopic manners during a short time, thus, the stirring quality and the stirring efficiency are increased.

The invention discloses a single-horizontal shaft vibration stirrer, which comprises a frame, a stirring transmission device, a vibration transmission device, a vibration stirring device, a stirring driving motor and a vibration driving motor; the stirring driving motor and the vibration driving motor are provided at one side of the vibration stirring device or respectively provided at two sides of the vibration stirring device, the stirring driving motor is connected with the vibration stirring device through the stirring transmission device, the vibration driving motor is connected with the vibration stirring device through the vibration transmission device; the vibration stirring device comprises a stirring drum which is fixedly mounted on the frame and a stirring mechanism which is horizontally arranged on the revolution center of the stirring drum, the stirring mechanism comprises a hollow stirrer shaft arranged in the stirring drum through a bearing and a plurality of stirring units which are fixedly mounted on the outer wall of the hollow stirrer shaft. The invention has the advantages of simple structure, reasonable design, and convenient usage and operation, the concrete mixture can reach uniformness on macroscopic view or microscopic view in short time, and the low stirring efficiency zone near the stirrer shaft is improved.

A speaker structure including an audio box and a speaker monomer is provided. The speaker monomer is connected with the audio box and includes a frame, at least one voice coil, at least one first vibrating assembly and a second vibrating assembly. The frame is disposed on the audio box. The voice coil is disposed in the frame. The first vibrating assembly is disposed on the frame and connected with the voice coil. The second vibrating assembly is disposed on the frame and surrounds and is connected with the first vibrating assembly. The voice coil drives the first vibrating assembly to vibrate, and drives the second vibrating assembly to vibrate through the first vibrating assembly, so that the speaker structure of the present invention can simultaneously have the sound quality performances of bass and alt, and has a good volume effect.

The invention provides a loudspeaker box capable of increasing an effective vibration area. The loudspeaker box comprises a box body with an accommodating cavity and a sound production device, the accommodating cavity is divided into a front cavity and a rear cavity by a partition plate; a single leakage hole communicated with the rear cavity is formed in the partition plate; a sound outlet hole communicated with the front cavity is formed in the box body in a penetrating manner; the sounding device is suspended in the front cavity; the sounding device comprises a basin stand, a vibration system and a magnetic circuit system. A leakage hole communicated with the single leakage hole is formed in the basin frame; the vibration system comprises a basin stand, an upper vibrating diaphragm, a lower vibrating diaphragm, an upper voice coil, a lower voice coil and a skeleton connecting the lower voice coil and the lower diaphragm, wherein the upper vibrating diagraphram the lower vibrating diaphragm are opposite in vibration directions; the magnetic circuit system comprises a clamping plate, a first magnetic part, a second magnetic part forming an inner magnetic gap with the first magnetic part, and a third magnetic part forming an outer magnetic gap with the second magnetic part. The third magnetic part is provided with a leakage channel communicated with the outer magnetic gap and the leakage hole, the upper voice coil is inserted into the inner magnetic gap, the lower voice coil is inserted into the outer magnetic gap, and the clamping plate is provided with an avoidance hole for avoiding the framework.

The invention provides a loudspeaker box capable of increasing an effective vibration area. The sound box comprises a box body with an accommodating cavity and a sound production device, the accommodating cavity is divided into a front cavity and a rear cavity by a partition plate; a single leakage hole communicated with the rear cavity is formed in the partition plate; a sound outlet hole communicated with the front cavity is formed in the box body in a penetrating manner; the sounding device is suspended in the front cavity; the sounding device comprises a basin stand, a vibration system anda magnetic circuit system. The basin frame is provided with a first leakage hole and a second leakage hole which are communicated with the single leakage holes. The vibration system comprises an upper vibrating diaphragm and a lower vibrating diaphragm which are respectively fixed at two opposite sides of the basin stand and have opposite vibration directions, an upper voice coil for driving theupper vibrating diaphragm to vibrate and sound, a lower voice coil for driving the lower vibrating diaphragm to vibrate and sound, and a skeleton for connecting the lower voice coil and the lower vibrating diaphragm. The upper vibrating diaphragm, the lower vibrating diaphragm and the basin stand enclose to form an accommodating space for accommodating the magnetic circuit system, the magnetic circuit system divides the accommodating space into an upper cavity communicated with the first leakage hole and a lower cavity communicated with the second leakage hole, and the upper cavity and the lower cavity are not communicated with each other.

The invention provides loudspeaker structure which comprises a sound box, a supporting base which is configured in the sound box, and a loudspeaker body which is configured on the supporting base, wherein the loudspeaker body comprises the components of a bracket which is configured on the supporting base, a voice coil which is configured in the bracket, a first vibration assembly which is configured on the bracket and is connected with the voice coil; a first damper which is configured between the loudspeaker body and the supporting base so that the loudspeaker body is suspended in the sound box; and a second vibration assembly which is configured on the sound box and is connected with the bracket. The loudspeaker body is suitable for generating vibration on the supporting base relative to the supporting base and the sound box through the first damper and furthermore makes the first vibration assembly vibrate and drives air in the sound box for pushing the second vibration assembly vibrate. The loudspeaker structure has a good bass performance and a good sound volume effect.

The invention discloses a multidirectional meandering sound channel sound device comprising a top cover and a hollow box body. An iron net cover is disposed in the top cover. A horn is disposed in the box body. A control circuit board is arranged on the sidewall of the box body. A meandering cavity is disposed in the box body. A passive sound basin is arranged to the side of the meandering cavity and is arranged on a sound basin support. An approximately sealed sound device inner chamber is formed among the box body, the top cover, the horn, and the passive sound basin. An electric signal outputs sound via the horn. The sound is amplified by the passive sound basin. The low-frequency range of a sound wave is effectively expanded after the sound wave passes the meandering cavity. By means of air compression-expansion and meandering cavity amplification principles and low-frequency effect enhancement, the effective vibration area of the horn to the miniature sound device is enlarged, thereby obtaining a satisfactory effect.

This invention provides a manufacturing method of piezoelectric ceramic sensor. Each layer of electrode of the new piezoelectric ceramic sensor obtained by this invention has an interlay electric connection with each other by a through hole of a ceramic sheet between them and non-conductive area. Compare with the current technology, the electric connection structure of the electrode of the piezoelectric ceramic sensor manufactured by this invention is specially designed and has strong practicability, and the effective vibration area of the ceramic sheet is improved and the volume is high; and the acoustical property is improved.

The invention discloses a vibrating diaphragm and a sounder monomer comprising the same, and relates to the technical field of electroacoustic products, wherein the vibrating diaphragm comprises a central part, a folding ring part arranged around the central part and a fixing part integrally arranged with the folding ring part; the fixing part comprises a vertical part which extends downwards fromthe outer side edge of the folding ring part; the invention also discloses a sounder monomer comprising the vibrating diaphragm. According to the vibrating diaphragm and the sounder monomer comprising the same provided by the invention, the effective vibration area of the vibrating diaphragm can be remarkably increased, and the acoustic performance of a sounder product is improved.

A coupling-synchronised vibrating stirrer with two horizontal axes, comprising a framework (9) and a vibrating stirring device provided thereon, a stirring driving and transmission device being provided on the left end of the vibrating stirring device, a vibrating driving and transmission device being provided on the right end of the vibrating stirring device, and the stirring driving and transmission device and the vibrating driving and transmission device being installed on the framework (9). The vibrating stirring device comprises a stirring barrel (12), and two stirring mechanisms each comprising a hollow stirring shaft (20) and a plurality of stirring units. The number of stirring driving and transmission devices is two, and they are installed on the left end of the two hollow stirring shafts (20) respectively. A synchronising coupling (5) is installed between the two stirring driving and transmission devices. The number of vibration driving and transmission devices is two and they are installed on the right end of the two hollow stirring shafts (20) respectively and are fixedly connected to two vibration shafts (16). The stirrer has rational and simple structure, is convenient to use, and can homogenise the material to be mixed in short time macroscopically and microscopically, thereby improving the quality and efficiency of stirring.

The invention provides a sounding device, which comprises a basin stand, a vibration system and a magnetic circuit system. The vibration system comprises an upper vibrating diaphragm, a lower vibrating diaphragm, a voice coil, an annular framework and an isolation voice diaphragm. The upper vibrating diaphragm is fixed on the basin stand and forms an accommodating space together with the basin stand. One side, far away from the accommodating space, of the upper vibrating diaphragm is communicated with the outside and serves as an upper front cavity for the upper vibrating diaphragm to producesound. The outer peripheral side of the lower vibrating diaphragm and the outer peripheral side of the isolation vibrating diaphragm are respectively connected with the basin stand, and the inner peripheral side of the lower vibrating diaphragm and the inner peripheral side of the isolation voice diaphragm are respectively connected with the skeleton. The voice coil is connected with the upper vibrating diaphragm and the framework respectively, drives the upper vibrating diaphragm to vibrate and drives the framework to drive the lower vibrating diaphragm to vibrate at the same time. The isolation vibrating diaphragm, the lower vibrating diaphragm, the framework and the basin stand jointly divide the accommodating space into a lower front cavity used for sounding of the lower vibrating diaphragm and a rear cavity used for sharing of the upper vibrating diaphragm and the lower vibrating diaphragm. The frame is provided with a sounding hole for communicating the lower front cavity with the outside. Compared with the prior art, the sound production device is higher in acoustic loudness and better in acoustic performance.

The invention relates to the technical field of the sounder, particularly to a miniature moving-iron bone conduction driving device of a sounder. The miniature moving-iron bone conduction driving device comprises a supporting with installing through holes; and a magnetic cover and an annular voice coil arranged in the magnetic cover are arranged in one installing through hole of the support. A vibration spring plate is arranged at the support and is located in the other installing through hole; a magnetic steel is arranged at the vibration spring plate; a pole plate is fixedly arranged at the magnetic steel; and the magnetic steel and the pole plate are located in the space formed by enclosure of the voice coil. The traditional moving-coil type loudspeaker structure is changed into the moving-iron type structure; the driving force of the vibration system and the vibratory sensation during sounding can be enhanced; because of the driving plate, connection with a case can be realized conveniently, so that the sound can be conducted to the case and the sounding is carried out by the case; because the area of the case is far larger than the vibration area of the common loudspeaker, the effective vibration area is increased, thereby substantially improving the driven volume and the vibration sensation of the effective sound that is given out.

The invention discloses a high-loudness vehicle-mounted alarm. The high-loudness vehicle-mounted alarm consists of an alarm machine box and a high-power speaker, wherein the high-power speaker is formed to a compressive sounding head by a W-shaped basin frame, an annular magnetic conducting cavity, an annular strong permanent magnet, a W-shaped sound film, a skeleton sound ring and a W-shaped end cover; a reflective horn is mounted on the compressive sounding head; the W-shaped sound film is equivalent to one sound ring to push two sound films, so that the effective vibrating area of the sound film is enlarged; a conical structure of the W-shaped sound film is excellent in rigidity and light in weight; the sound ring of a center tap is directly matched and connected with an audio power amplifier output circuit; an improved magnetic circuit system is simple in structure, strong in magnetism and light in weight; in the audio power amplifier circuit, upper and lower field effect tubes are connected to A and B type push-pull output circuits having common drain; the negative feedback is deep; the amplifier tone quality is improved; the amplifier stability is improved; the field effect tubes are high in output current and low in loss; a vehicle power supply with low voltage of 12 V is only used for generating an electroacoustic power above 500 W; and the high-power speaker is driven to give a high-loudness alarm sound.

The invention provides an MEMS device and a preparation method thereof. The MEMS device is characterized in that a first insulating layer is formed on the front surface of a substrate; a vibrating diaphragm and a polar plate are formed on the first insulating layer; a back cavity is formed on the back surface of the substrate; the back cavity exposes the vibrating diaphragm and is back to the gap,and a part of the first insulating layer is reserved as a supporting part of the vibrating diaphragm; the vibrating diaphragm is symmetrical relative to the projection center of the supporting part on the vibrating diaphragm, and remains the substrate, having an area opposite to the supporting part, in the back cavity as a supporting substrate of the supporting part; and when the vibrating diaphragm vibrates, the vibrating diaphragm vibrates at the middle position between the edge and the center of the vibrating diaphragm, so that the effective vibrating area is increased, and the sensitivityand the signal-to-noise ratio of the MEMS device are improved, and the vibration amplitude is reduced, and the fluctuation range of the sensitivity and the signal-to-noise ratio is reduced; and meanwhile, the force applied to the vibrating diaphragm in a mechanical reliability test is reduced, so that the reliability of the MEMS device is improved.

The invention provides an MEMS device and a preparation method thereof. The MEMS device is characterized in that one or more slits exposing a substrate are formed in a vibrating diaphragm, and a second through hole which is communicated with the gap and has a right opposite area with the slit is formed in a polar plate; when a reliability test such as a steam blowing test is carried out on the MEMS device, gas is introduced from a back cavity, and one part of the gas flows out from the second through hole through the slit, so that the pressure applied to the vibrating diaphragm is reduced, and the bearing capacity of the vibrating diaphragm is correspondingly improved, and the service life of the MEMS device is prolonged; moreover, one or more slits are formed in the vibrating diaphragm,so that the amplitude of the vibrating diaphragm in the vibrating process can be increased, and the sensitivity and the signal-to-noise ratio of the MEMS device are improved.

The invention discloses a loudspeaker and electronic equipment. The loudspeaker comprises a vibration system and a magnetic circuit system; the magnetic circuit system comprises a first magnetic group, a second magnetic group and a third magnetic group which are sequentially arranged in the vibration direction of the vibration system, and the first magnetic group comprises two first magnets which have opposite magnetic poles and are arranged at intervals; the second magnetic group comprises two second magnets which are arranged at an interval, two magnetic poles of the second magnets are distributed along the vibration direction, and the distribution directions of the magnetic poles of the two second magnets are opposite; the third magnetic group comprises two third magnets with opposite magnetic poles and arranged at an interval; the first magnet, the second magnet and the third magnet which are located on the same side form a Halbach array, and the opposite sides of the two Halbach arrays are magnetic field enhancement sides; a first magnetic gap and a second magnetic gap are respectively formed by a gap between the two first magnets and a gap between the two third magnets; the vibration system comprises a vibration diaphragm and a flat voice coil, and the axial direction of the flat voice coil is perpendicular to the vibration direction.

A sound generator includes a frame, a magnetic circuit system and a vibration system accommodated in the frame. The vibration system includes a suspension. The suspension includes a first part and a second part attached to the first part. The first part includes a first middle portion, a first edge portion, and a first positioning portion. The second part includes a second middle portion, a second edge portion, and a second positioning portion. The second positioning portion is stacked on the first positioning portion, and is assembled with the first positioning portion by adhesive. The first edge portion is convex toward the frame, and the second edge portion is convex away from the frame, by which a sealed cavity is formed between the first and second edge portions. By virtue of such a configuration, the strength of the vibration system is improved.

The invention provides an MEMS device and a preparation method thereof. The MEMS device is characterized in that: a vibrating diaphragm is formed on the front surface of a substrate; a support part isformed between the vibrating diaphragm and the substrate; the vibrating diaphragm is symmetrical relative to the projection center of the supporting part on the vibrating diaphragm; a back cavity isformed on the back surface of the substrate; the back cavity exposes the vibrating diaphragm and is back to the gap, and remains the substrate, having an area opposite to the supporting part, in the back cavity as a supporting substrate of the supporting part; and when the vibrating diaphragm vibrates, the vibrating diaphragm vibrates at the middle position between the edge and the center of the vibrating diaphragm. Compared with the prior art, the effective vibration area is increased, so that the sensitivity and the signal-to-noise ratio of the MEMS device are improved, and the vibration amplitude is reduced, and the fluctuation range of the sensitivity and the signal-to-noise ratio is reduced; and meanwhile, the force applied to the vibrating diaphragm in a mechanical reliability test is reduced, so that the reliability of the MEMS device is improved.

The invention provides a MEMS device and a manufacturing method thereof. A vibrating membrane is formed on the front of a base, a supporting part is formed between the vibrating membrane and the base, and the vibrating membrane vibrates relative to the supporting part. The projection on the membrane is symmetrical to the center, and a back cavity is formed on the back of the substrate, the back cavity exposes the vibrating membrane and faces away from the gap, and retains an area facing the support part in the back cavity The base of the support part is used as the support base of the support part, and the vibrating membrane vibrates at the middle position between the edge and the center of the vibrating membrane when vibrating, and compared with the prior art, the effective vibration area is increased, As a result, the sensitivity and signal-to-noise ratio of MEMS devices are improved, while the amplitude of vibration is reduced, and the fluctuation range of sensitivity and signal-to-noise ratio is reduced; at the same time, the force applied to the vibrating membrane in the mechanical reliability test is reduced, Therefore, the reliability of the MEMS device is increased.

The invention provides a MEMS device and a preparation method thereof. A first insulating layer is formed on the front of a base, a vibrating film and a pole plate are formed on the first insulating layer, and a back cavity is formed on the back of the base. The back cavity exposes the vibrating membrane and faces away from the gap, and retains part of the first insulating layer as a supporting part of the vibrating membrane, and the vibrating membrane is opposite to the supporting part on the vibrating membrane The projection center is symmetrical, and the base in the back cavity that has an area facing the support part is reserved as the support base of the support part. When the vibrating membrane vibrates, it is between the edge and the center of the vibrating membrane Vibration occurs at the middle position of the MEMS device, which increases the effective vibration area, thereby improving the sensitivity and signal-to-noise ratio of the MEMS device, while reducing the amplitude of vibration, reducing the fluctuation range of sensitivity and signal-to-noise ratio; The force applied to the vibrating membrane in the mechanical reliability test, thereby increasing the reliability of the MEMS device.

The invention discloses a high-loudness vehicle-mounted alarm. The high-loudness vehicle-mounted alarm consists of an alarm machine box and a high-power speaker, wherein the high-power speaker is formed to a compressive sounding head by a W-shaped basin frame, an annular magnetic conducting cavity, an annular strong permanent magnet, a W-shaped sound film, a skeleton sound ring and a W-shaped end cover; a reflective horn is mounted on the compressive sounding head; the W-shaped sound film is equivalent to one sound ring to push two sound films, so that the effective vibrating area of the sound film is enlarged; a conical structure of the W-shaped sound film is excellent in rigidity and light in weight; the sound ring of a center tap is directly matched and connected with an audio power amplifier output circuit; an improved magnetic circuit system is simple in structure, strong in magnetism and light in weight; in the audio power amplifier circuit, upper and lower field effect tubes are connected to A and B type push-pull output circuits having common drain; the negative feedback is deep; the amplifier tone quality is improved; the amplifier stability is improved; the field effect tubes are high in output current and low in loss; a vehicle power supply with low voltage of 12 V is only used for generating an electroacoustic power above 500 W; and the high-power speaker is driven to give a high-loudness alarm sound.