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

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.

The invention provides a loudspeaker capable of increasing the effective vibration area, which includes a shell, a vibration system and a magnetic circuit system. The upper diaphragm and the lower diaphragm, the outer edges of the upper diaphragm and the lower diaphragm are fixed on the casing, the lower diaphragm is arranged around the magnetic circuit system, and the skeleton includes the connection part connected with the upper diaphragm and the connection part connected with the connection part and surrounding the magnetic circuit. The connection frame set by the road system, the inner edge of the lower diaphragm is fixed on the connection frame, wherein, there is a splint set around the connection frame and fixed to the shell between the upper diaphragm and the lower diaphragm, and the upper diaphragm, the lower diaphragm The membrane, the splint and the connection frame divide the inner space of the shell into the upper membrane front chamber for the upper diaphragm to sound, the lower diaphragm front chamber for the lower diaphragm to sound, and the rear chamber shared by the upper diaphragm and the lower diaphragm; the outer shell A first sound outlet hole communicating with the anterior cavity of the upper membrane and a second sound outlet hole communicating with the anterior cavity of the inferior membrane are provided through the upper part.

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 provides a sound-generating device, which includes a frame, a vibration system and a magnetic circuit system. The vibration system includes an upper diaphragm, a lower diaphragm, a voice coil, a skeleton and an isolation diaphragm; One side of the magnetic circuit system; the lower diaphragm is ring-shaped and set around the magnetic circuit system at intervals, the lower diaphragm and the upper diaphragm are set at intervals relative to each other, and the outer peripheral side of the lower diaphragm is fixed on the basin frame; the voice coil is connected to the upper diaphragm close to One side of the magnetic circuit system is inserted in the magnetic gap; the skeleton is ring-shaped and set around the magnetic circuit system at intervals. The skeleton is connected to the voice coil and the lower diaphragm respectively. The voice coil drives the upper diaphragm to vibrate, and at the same time drives the skeleton to drive The lower diaphragm vibrates; the isolation diaphragm is ring-shaped and is set around the magnetic circuit system at intervals. The isolation diaphragm is arranged between the upper diaphragm and the lower diaphragm at intervals. The inner peripheral side is connected with the skeleton. Compared with the related art, the sound emitting device of the present invention has higher acoustic loudness and better acoustic performance.

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 a loudspeaker box capable of increasing the effective vibration area, which includes a box body with an accommodating cavity and a sound-generating device, the accommodating cavity is divided into a front cavity and a rear cavity by a partition, and a wall communicating with the rear cavity is arranged on the partition Leakage hole of the single unit. There is a sound outlet connected to the front cavity through the box body. The sound-generating device is suspended in the front cavity. The first leak hole and the second leak hole connected by the leak hole, the vibration system includes an upper diaphragm and a lower diaphragm which are respectively fixed on opposite sides of the basin frame and have opposite vibration directions, an upper voice coil which drives the upper diaphragm to vibrate and produce sound, The lower voice coil that drives the lower diaphragm to vibrate and produce sound and the skeleton connecting the lower voice coil and the lower diaphragm, the upper diaphragm, the lower diaphragm and the basin frame enclose the storage space for the magnetic circuit system, and the magnetic circuit system divides the storage space It is 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 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.

The invention provides a loudspeaker box capable of increasing the effective vibration area, which includes a box body with an accommodating cavity and a sound-generating device, the accommodating cavity is divided into a front cavity and a rear cavity by a partition, and a wall communicating with the rear cavity is arranged on the partition Leakage hole of the single unit. There is a sound outlet connected to the front cavity through the box body. The sound-generating device is suspended in the front cavity. The sound-generating device includes the basin frame, vibration system and magnetic circuit system. The leakage hole connected to the leakage hole, the vibration system includes the basin frame, the upper diaphragm and the lower diaphragm, the upper voice coil, the lower voice coil and the skeleton connecting the lower voice coil and the lower diaphragm, the magnetic circuit system includes the splint, The first magnetic part, the second magnetic part forming an inner magnetic gap with the first magnetic part, and the third magnetic part forming an outer magnetic gap with the second magnetic part, the third magnetic part has a communication with the outer magnetic gap and leakage The leakage channel of the 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 splint is provided with an avoidance hole for avoiding the skeleton.

The invention provides a loudspeaker box capable of increasing the effective vibration area, which includes a box body and a sound-generating device. The accommodating cavity is divided into a front cavity and a rear cavity by a partition. The sound hole is connected to the front cavity, and the sound-generating device is suspended in the front cavity. The sound-generating device includes a basin frame with a basin leakage hole, a vibration system and a magnetic circuit system. The upper and lower diaphragms in the accommodation space connected by holes and the upper and lower voice coils respectively inserted into the inner magnetic gap and the outer magnetic gap, the magnetic circuit system includes the inner magnetic part and the inner magnetic gap formed between the inner magnetic part and the inner magnetic part. The middle magnetic part, the outer magnetic part forming the outer magnetic gap with the middle magnetic part, the first pole core fixed on the inner magnetic part, the second pole core fixed on the middle magnetic part and the outer magnetic part and fixed on the The third pole core on the inner magnetic part and the middle magnetic part, the middle magnetic part has an air passage connecting the outer magnetic gap and the inner magnetic gap.

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.

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; andthe acoustical property is improved.

The invention provides a loudspeaker capable of increasing the effective vibration area, which includes a shell, a vibration system and a magnetic circuit system. The diaphragm, the middle diaphragm and the lower diaphragm, the outer edges of the upper diaphragm, the middle diaphragm and the lower diaphragm are fixed on the casing, the middle diaphragm and the lower diaphragm are set around the magnetic circuit system, and the vibration system also includes the upper diaphragm and the upper diaphragm. The upper frame connected by the membrane and the lower frame set around the magnetic circuit system, the inner edge of the middle diaphragm is sandwiched between the upper frame and the lower frame, and the inner edge of the lower diaphragm is fixed on the lower frame. Space and sound guide channel, the storage space is separated by the upper diaphragm, the middle diaphragm, the lower diaphragm and the lower frame into the front cavity of the lower diaphragm for the sound of the lower diaphragm and the rear cavity shared by the upper diaphragm and the lower diaphragm. The acoustic channel communicates with the anterior cavity of the superior membrane and the anterior cavity of the inferior membrane, and the shell is provided with a sound channel communicating with the anterior cavity of the superior membrane.