12results about How to "Guaranteed acoustic performance" patented technology

The application discloses a spherical top, a processing technology thereof and a sound generating device, and is applied to the sound generating device. The spherical top comprises a base layer and an electrophoretic layer. A transition layer is formed on the surface of the base layer. The electrophoretic layer is formed on the side of the transition layer away from the base layer through an electrophoretic process. The application aims to provide a spherical top with good heat dissipation effect. The connection strength and stability between the electrophoretic layer and the base layer for realizing heat dissipation are effectively improved. Meanwhile, the electrophoretic layer can be uniformly coated on the base layer, and the heat dissipation efficiency of the spherical top is improved.

The utility model discloses a horn installation structure and an electronic device, the horn installation structure comprises a housing, the housing is provided with an installation groove, the groove bottom of the installation groove is provided with a sound outlet hole and a waterproof strip, the sound outlet hole penetrates through the groove bottom of the installation groove, the waterproof strip is arranged along the outer side of the sound outlet hole for a circle, and the waterproof strip is arranged on the outer side of the installation groove. The waterproof strip and the shell are integrally formed; and the loudspeaker is adaptively arranged in the mounting groove, the loudspeaker is provided with a clamping piece, a clamping part is arranged at a corresponding position of the shell, and when the clamping piece is adaptively clamped with the clamping part, the loudspeaker extrudes the waterproof strip, so that the loudspeaker is hermetically connected with the groove bottom of the mounting groove. According to the utility model, the required space is small, the waterproof effect is good, the assembly is simple, and the first pass yield of the production process is improved.

This utility model discloses a sound port protection structure for an acoustic product, comprising an acoustic product, a shell, a soft rubber sleeve, and a waterproof cloth. The opening of the shell is equipped with a short vertical baffle, a high vertical baffle, and a horizontal baffle, forming staggered upper and lower sound channels. This utility model has a reasonable structural design. The soft rubber sleeve covers the acoustic product, providing cushioning and shock absorption, thus offering initial protection. Utilizing the properties of the waterproof cloth, it allows sound to pass through while blocking liquids and particles, providing excellent waterproof and dustproof effects. Simultaneously, the structural cooperation of the short, high, and horizontal baffles forms a staggered labyrinthine structure of upper, middle, and lower sound channels. The tortuous and staggered sound channel paths effectively block directly intruding rainwater, washing water jets, and larger dust particles, greatly reducing the risk of high-pressure water directly impacting the waterproof cloth, while sound waves can easily propagate through the tortuous sound channel paths with minimal sound loss, ensuring acoustic performance.

This application relates to a muffler, exhaust assembly, and vehicle, belonging to the field of muffler drainage technology. It includes: a housing, a drainage component, ball bearings, and a moving assembly. The housing is connected to the engine. The drainage component is located at the bottom of the housing and extends through the bottom of the housing. A channel is provided inside the drainage component, and an inlet and an outlet are provided on the drainage component, communicating with the channel. The inlet is located inside the housing, and the outlet is located outside the housing. The ball bearings roll within the drainage component. The moving assembly drives the ball bearings to move within the channel, thereby closing or opening the outlet. By controlling the movement of the ball bearings through the moving assembly, the outlet can be opened or closed as needed, maintaining the sealing of the outlet in the non-draining state, preventing exhaust gas and noise leakage, and ensuring the acoustic performance of the muffler.

The present invention provides a sound-emitting device and a head-mounted electronic device. The sound-emitting device includes a housing, a first speaker, a second speaker, and a support. The technical solution of the present invention provides a support, which is arranged between the sound-emitting surface of the first speaker and the sound-emitting surface of the second speaker, to provide support for the first speaker and the second speaker, thereby improving the stability of the first speaker and the second speaker in the housing. A common front cavity is formed between the sound-emitting surface of the first speaker and the sound-emitting surface of the second speaker, and the first speaker and the second speaker can enhance the sound effect through the common front cavity. The support ensures that the first speaker and the second speaker are relatively fixed, so that the space size of the common front cavity remains stable, thereby ensuring the acoustic effect of the sound-emitting device.

The utility model discloses a centering support piece and sound unit, centering support piece includes internal fixed part, cantilever part and outer fixed part, the cantilever part is connected the internal fixed part, the inner edge of outer fixed part is connected the cantilever part, and the outer fixed part is provided with the reinforcing portion, and the reinforcing portion is along the inner edge of outer fixed part setting. This centering support piece structure is novel, and the inner edge of outer fixed part is provided with the reinforcing portion, which greatly enhances the structural strength of the inner edge area of outer fixed part, is favorable for reducing the deformation degree of the area of cantilever part close to outer fixed part, thereby avoiding the interference of cantilever part and turn -ups when the sound unit works, and further guaranteeing the acoustic performance and structural stability of sound unit.

The present invention discloses a backing material, a raw material composition and a preparation method thereof, an ultrasonic probe, and an ultrasonic diagnostic device. The raw material composition of the backing material includes an epoxy resin, an acrylic resin, and an amine curing agent; wherein the average molecular weight of the epoxy resin is 350-400, and the epoxy equivalent is 175-200 g / eq; the average molecular weight of the acrylic resin is 70-200, and the viscosity is 20000-40000 CP. The backing material prepared by the raw material composition of the backing material provided by the present invention has the performance of high acoustic attenuation. Furthermore, optional components such as tungsten powder, lead powder, and alumina powder can be added to the system to further improve the thermal conductivity, and the acoustic impedance can be adjusted by changing the system density.

The invention discloses a loudspeaker turnover structure for keeping sound effect, which comprises a disc and a connecting rod group, and is characterized in that the disc comprises a turnover cover plate and a supporting rod; the connecting rod group comprises a main driving connecting rod, a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, the main driving connecting rod is connected with the driving motor, and the bottom end of the first connecting rod is connected with the bottom end of the main driving connecting rod; the upper ends of the first connecting rod and the second connecting rod are rotationally connected with the supporting rod through movable rotating pin shafts, the bottom end of the second connecting rod is connected with the shell, the first connecting rod is provided with a first driving pin and a second driving pin, the driven end of the third connecting rod is connected with the second driving pin, and the driving end of the third connecting rod is connected with the bottom end of the supporting rod. And the driven end of the fourth connecting rod is connected with the first driving pin and the driving end is connected with the supporting rod. According to the invention, a mechanism in which the loudspeaker is fixed and the surface cover plate can be overturned is realized, and the sound effect of the loudspeaker can be ensured while the cover plate is lifted.

The invention discloses electronic equipment, and belongs to the technical field of communication. The electronic equipment comprises an equipment shell, an acoustic device, a first filter screen and a second filter screen, the acoustic device is arranged in the equipment shell, the equipment shell is provided with a sound guide channel and a sound hole, the first end of the sound guide channel is opposite to the acoustic device, the second end of the sound guide channel is communicated with the sound hole, and the first filter screen and the second filter screen are arranged in the sound inlet direction of the sound guide channel. The first filter screen and the second filter screen are arranged in the sound guide channel at an interval; the first filter screen is opposite to the sound hole, the first filter screen is provided with a first blocking area, and at least part of the orthographic projection of the sound hole is located in the orthographic projection of the first blocking area in the sound guiding direction of the sound guiding channel.

The present invention discloses an acoustic switch and an in-ear speaker, the acoustic switch comprising: a housing, provided with a gas flow channel connecting the inside and outside of the housing; a magnetic ring, relatively fixed to the housing, through which the gas flow channel passes; a seal, comprising a moving part and an elastic part connected between the moving part and the housing, the moving part at least partially made of a magnetic conductive material; a magnet, relatively fixed to the housing, the magnet and the magnetic ring being respectively located on both sides of the moving part; and a coil, for generating a magnetic field polarizing the moving part by energizing; the moving part has a first position that is magnetically attracted to the magnetic ring to close the gas flow channel and a second position that is magnetically attracted to the magnet to open the gas flow channel, the coil drives the moving part to switch between the first position and the second position by the magnetic field generated by energizing. The acoustic switch of the present invention is conducive to miniaturization, more energy-saving, and generates less heat.

The utility model discloses a sounding unit, which comprises a magnetic circuit assembly, a voice coil, a diaphragm assembly and a framework, the magnetic circuit assembly comprises an upper yoke, a lower yoke, a central magnetic structure and an edge magnetic structure, the central magnetic structure and the edge magnetic structure are respectively arranged on the lower yoke, and the upper yoke covers the central magnetic structure and the edge magnetic structure. The magnetic circuit assembly is provided with a magnetic gap, the magnetic gap surrounds the central magnetic structure, the magnetic gap is located between the upper yoke and the lower yoke, the magnetic circuit assembly is provided with a first magnetic loop and a second magnetic loop which are opposite in direction, the first magnetic loop penetrates through the upper portion of the magnetic gap, and the second magnetic loop penetrates through the lower portion of the magnetic gap. The second magnetic loop passes through the lower part of the magnetic gap; the framework comprises an inner mounting part, a connecting part and an outer mounting part which are connected in sequence, the inner mounting part is connected with the voice coil, the outer mounting part is connected with the transition part, a stamping convex hull is arranged on the connecting part, and a reinforcing block is arranged in the stamping convex hull. The sounding unit is stable in structure and excellent in performance.

The utility model discloses a sounding unit, which comprises a magnetic circuit assembly, a voice coil, a diaphragm assembly and a framework, the magnetic circuit assembly comprises an upper yoke, a lower yoke, a central magnetic structure and an edge magnetic structure, the central magnetic structure and the edge magnetic structure are respectively arranged on the lower yoke, and the upper yoke covers the central magnetic structure and the edge magnetic structure. The magnetic circuit assembly is provided with a magnetic gap, the magnetic gap surrounds the central magnetic structure, the magnetic gap is located between the upper yoke and the lower yoke, the magnetic circuit assembly is provided with a first magnetic loop and a second magnetic loop which are opposite in direction, the first magnetic loop penetrates through the upper portion of the magnetic gap, and the second magnetic loop penetrates through the lower portion of the magnetic gap. The second magnetic loop passes through the lower part of the magnetic gap; the voice coil is located in the magnetic gap; the framework comprises an inner mounting part, a connecting part and an outer mounting part which are connected in sequence, the inner mounting part is connected with the voice coil, the outer mounting part is connected with the transition part, and a reinforcing boss is arranged on the connecting part. The sounding unit is stable in structure and excellent in performance.