59 results about "Horn structure" patented technology

The invention relates to the technical field of farm ventilation, and provides a farm ventilation system which comprises a mounting pipe, one end of the mounting pipe is detachably connected with a connecting pipe, and a plurality of air inlets are formed in one end of the connecting pipe in an annular array mode; two sealing plates are fixedly connected to an inner cavity of the mounting pipe, a plurality of thin pipes are jointly embedded in inner cavities of the two sealing plates in an annular array mode, a plurality of annular fins are distributed and fixedly connected to the surface of each thin pipe at intervals, a spiral flow guide rib is fixedly connected to an inner cavity of each thin pipe, and transition pipes are fixedly connected to the two ends of each thin pipe. The transition pipe is of a trumpet-shaped structure; by means of the technical scheme, the technical problems that in the prior art, ventilation equipment mostly adopts a single air suction and exhaust structure, only simple replacement of air inside and outside a farm can be achieved, and a targeted temperature adjusting function is lacked are solved.

The invention relates to an integral ox horn electrode and a processing and using method thereof, and the integral ox horn electrode comprises a first reference frame which is used for positioning the Z-axis position of the ox horn electrode; the ox horn structure is fixedly connected with the first reference frame and is used for forming a glue inlet of a workpiece; the arc-shaped inner side of the ox horn structure is provided with an extension structure, a positioning hole is formed in the extension structure, an ejector pin is fixed in the positioning hole, and the ejector pin is perpendicular to the ox horn electrode and used for positioning the X-axis position and the Y-axis position of the ox horn electrode. A thimble is fixed in the positioning hole, is vertical to the ox horn electrode and is used for positioning the X-axis position and the Y-axis position of the ox horn electrode, positioning the Z-axis position of the ox horn electrode by using a first reference frame and disassembling the electrode into an integral ox horn electrode machined by a three-axis machine tool, so that the problems that the wire disassembling problem of a half ox horn electrode is adopted, the appearance of a product is influenced, the copper material is relatively small, the machining progress is quick and the production cost is low are solved. And the cost is low.

The utility model discloses a rapid rotary disc material receiving machine which comprises a machine frame, a rotary disc and a plurality of material receiving rings, and the machine frame is provided with a feeding hopper which is located above the material receiving rings and can be aligned with the material receiving rings in an up-and-down mode. A connecting piece is arranged between the material receiving ring and the rotating disc, the upper end of the connecting piece is connected with the material receiving ring, the lower end of the connecting piece is installed on the rotating disc through a detachable installation structure, the connecting piece is of a horn structure which is gradually expanded from top to bottom, and a photoelectric detection switch which can be lifted up and down to adjust the installation height is installed on the machine frame. The detection end of the photoelectric detection switch is located at the output end of the feeding hopper and can be within the range of the receiving ring, corresponding to the feeding hopper, of the rotating disc, a positioning proximity switch is installed on the portion, located outside the rotating disc, of the rack, and an induction rod matched with the positioning proximity switch in an induction mode is installed on the portion, located between the two connecting pieces, of the rotating disc. Compared with the prior art, the material receiving bag is not prone to inclining and falling down, and the material receiving bag is not prone to sliding down; and a photoelectric detection switch is arranged, so that the materials are not easy to fall on the ground.

The utility model discloses a vibrating reed integrated bone conduction horn structure, which comprises a bracket, a vibrating reed, a voice coil, a PCB (Printed Circuit Board), an iron basin, a magnet and a washer, the support and the vibrating reed are both made of plastic materials, the support and the vibrating reed are integrally formed in an injection molding mode, the support is provided with a concave cavity with an opening in the upper end, the vibrating reed is located at the lower section position of the concave cavity, the PCB, the voice coil, the washer, the magnet and the iron basin are sequentially arranged on the concave cavity from top to bottom, and the lower end of the iron basin makes contact with the vibrating reed; thus, the vibrating reed and the support are integrally formed in an injection molding mode, extra manufacturing of the vibrating reed is omitted, firmness of the whole structure of the product is improved, assembling is convenient, meanwhile, the weakness that F0 adjacent frequency signals are seriously distorted due to the fact that a traditional metal elastic piece material is hard is avoided, audio signal current can drive the vibrator to make sound more easily, and the sound quality is improved. And the vibration operation is more stable, the sound conduction is clearer, the usability is good, and the application range is wide.

The utility model provides a loudspeaker structure based on vibration sound transmission, which relates to the technical field of electroacoustic conversion devices, and comprises an upper cover assembly, a voice coil assembly, a magnetic circuit assembly and a lower cover assembly, and the surface of the upper cover assembly is provided with a heat dissipation hole I, a positioning hole and a fixing hole. According to the utility model, the magnetic circuit assembly and the voice coil assembly which are modularly designed are matched, an innovative structure that the voice coil is fixed and the magnetic circuit is movable is adopted, an electric signal is directly converted into mechanical vibration to be conducted to a human body, effective conversion from a sound signal to somatosensory vibration is realized, and the limitation that a traditional loudspeaker can only transmit sound waves through air is overcome; the heat dissipation holes and the ventilation grooves arranged in the upper and lower cover assemblies form convection heat dissipation channels, the heat conduction performance of the metal heat dissipation fins is matched, the heat dissipation problem during working of the vibration horn is effectively solved, long-time stable operation of equipment is guaranteed, meanwhile, the elastic supporting structure of the elastic pieces is utilized, vibration loss is reduced, and vibration conduction efficiency is improved.

The invention discloses a vehicle-mounted miniaturized directional strong sound device based on a double-membrane transducer, and the device employs the rear-mounted direct-drive layout of the double-membrane transducer, enables sound waves to directly enter a horn structure, avoids the path loss and energy attenuation caused by the multiple reflection of the sound waves in a conventional reflective structure, and remarkably improves the electroacoustic conversion efficiency. Under the same input power, higher sound pressure level output can be realized, through the synergistic effect of the three-section horn structure with the gradually changing section and the built-in phase cone, the form and the propagation phase of a sound wave wavefront are effectively controlled, sound energy is gradually converged in the propagation process, the sound beam diffusion angle is greatly compressed, the directivity and the propagation distance of sound are enhanced, and the sound quality is improved. In addition, by means of precise integration of the acoustic cavity and vertical installation of the circuit board, high-density layout is achieved in a limited space, and the device is suitable for a vehicle-mounted environment, supports multi-device cascading and matrix deployment, is easy and convenient to install and maintain and has outstanding engineering practicability and reliability.

The utility model relates to the technical field of vehicle horns, in particular to a vehicle air horn structure which comprises a base and a rotating shaft, the inner wall of the base is rotationally connected with the rotating shaft through a bearing, the upper end of the rotating shaft is fixedly connected with a shell, a dust cover moving mechanism is arranged in the shell, and the inner wall of the shell is fixedly connected with an air box. Through cooperation of the shell and the dust cover moving mechanism, the motor drives the cam to rotate, the cam drives the connecting plate to move on the shell, meanwhile, the connecting plate slides on the sliding rod, the spring enables the connecting plate to be always attached to the cam, the connecting plate drives the dust cover to move, and after the dust cover moves away from the surface of the horn opening, vibration sound of the reed is transmitted out of the horn opening. By means of the mode, the dust cover can be moved away when the horn is used, sound transmission is prevented from being blocked, and the using effect of the air horn structure is improved.

A high-frequency bass T iron transmission structure coaxial loudspeaker comprises a high pitch unit which is driven by an inner magnetic neodymium iron boron magnetic circuit; a column center hole of the bass T iron is processed into a horn structure extending axially, and the geometric contour of the horn structure is an exponential curve and is used for guiding sound waves; the high-pitch pipe plug is made of an ABS plastic material and is coaxially nested and connected with the horn structure of the low-pitch T iron to form a continuous sound wave transmission channel; the short circuit ring is made of a high-conductivity copper material, is embedded in the magnetic gap of the bass magnetic circuit and is used for inhibiting harmonic distortion of the magnetic field; the coaxial loudspeaker box is novel in structure and more suitable for a loudspeaker box product for listening in small space and close distance, the high pitch unit and the low pitch unit of the loudspeaker are designed to be coaxial, so that the high pitch and the low pitch of a sounding point make sound on the same axis, the tone is more natural and smooth, the high pitch installation position of the loudspeaker box body is removed, and the size can be correspondingly designed to be small and compact.

The application discloses a dual-mode dual-circularly polarized antenna array, which comprises a dual-mode feed network and a radiation network stacked in order from bottom to top, the dual-mode feed network is used for transmitting electromagnetic waves in the form of TE10 mode and TEM mode input thereto to the radiation network, and the radiation network is used for radiating electromagnetic waves transmitted by the dual-mode feed network to free space, the dual-mode feed network is a hybrid feed network based on a hollow waveguide structure and an SISL structure, and the radiation network is a hybrid radiation network based on a partition structure and a stepped horn structure; the dual-mode dual-circularly polarized antenna array has the advantages of low profile, low sidelobe, simple structure and capability of being applied to a high-gain scene.

The utility model relates to the technical field of automobile horns, in particular to an automobile horn structure which comprises a supporting seat, a horn body and a buffering assembly, the horn body is installed on the supporting seat through the buffering assembly, the buffering assembly comprises a first hinged support, a hydraulic rod, a second hinged support, an installation cylinder frame, a spring and a fixing component, the first hinged support is fixedly installed in the supporting seat, and the second hinged support is fixedly installed in the supporting seat. One end of the hydraulic rod is rotationally connected with the first hinged support, the other end of the hydraulic rod is rotationally connected with the second hinged support, the mounting cylinder frame is fixedly connected with the second hinged support and located in the supporting base, the horn body is detachably mounted on the mounting cylinder frame, the spring sleeves the outer side of the hydraulic rod, and the fixing component is connected to the mounting cylinder frame and the horn body. The problems that when an automobile runs, vibration and impact generated by bumpy road surfaces can be transmitted to the horn, but the horn in the prior art is not provided with a buffering structure, so that connecting parts of all parts of the horn are prone to loosening, abrasion of the parts is aggravated, and the service life of the horn is shortened are solved.

The application provides a phototherapy device for treating brain-related diseases. The phototherapy device comprises a gas supply assembly, a head-wearing assembly and a first horn structure. The gas supply assembly comprises at least a gas supply pipe group. The head-wearing assembly comprises a shell and a light-emitting piece, the shell has a gas cavity in fluid communication with the gas supply pipe group, the gas supply pipe group is used for providing gas to the gas cavity, and the gas in the gas cavity is used for blowing to the head. The first horn structure is arranged at the gas outlet of the gas supply pipe group, and is used for diffusing the gas into the gas cavity via the first horn structure. The opening size of the first horn structure increases along the flow direction of the gas, and the cross-sectional area of the opening of the first horn structure is smaller than the cross-sectional area of the gas cavity. The phototherapy device can reduce the noise generated when the high-speed fluid transmitted from the gas supply pipe group enters the gas cavity with a relatively large cross-sectional area by arranging the first horn structure.

The utility model provides a cavel structure of a dune buggy, which comprises a cavel body, a front suspension upper connecting part, a front suspension lower connecting part, a steering rod connecting part and a brake component connecting part, and each connecting part and the cavel body are integrally formed, so that the assembly efficiency is increased, and the whole structure has higher strength and stability and is convenient to assemble and disassemble. Therefore, the vehicle has high stability in the running process.

The utility model relates to the technical field of thin-type horns, in particular to a thin-type horn structure, which comprises a basin frame, a vibrating diaphragm and a dustproof cap covering the top of the vibrating diaphragm, the periphery of the vibrating diaphragm is annularly attached to the top of the basin frame, a first boss annularly protrudes from the bottom of the dustproof cap, and a second boss annularly protrudes from the top of the vibrating diaphragm. The first boss and the second boss are concentrically arranged and buckled with each other, so that the dustproof cap can be quickly positioned and installed at the top of the vibrating diaphragm, the dustproof cap and the vibrating diaphragm are kept concentric after installation, and harmonic distortion caused by vibrating diaphragm deformation due to uneven stress when the vibrating diaphragm vibrates caused by eccentricity of the dustproof cap is avoided. And the assembly efficiency between the dustproof cap and the vibrating diaphragm can be improved.

The utility model discloses a sound box horn structure and a sound box using the same, the sound box horn structure comprises a horn upper cover and a horn lower cover, the horn lower cover is provided with two grooves, and the two grooves are in mirror symmetry with a Y-axis direction as a symmetry axis; the width of the groove is gradually increased in the sound wave conveying direction. The groove comprises a first arc-shaped surface, a second arc-shaped surface and a vertical surface which are connected in sequence; the vertical surface is close to the middle of the horn lower cover, and the first arc-shaped surface is close to the outer side of the horn lower cover; the first arc-shaped surface is bent outwards, and the second arc-shaped surface is bent downwards; the horn upper cover detachably covers the top of the horn lower cover, and the horn upper cover is matched with the first arc-shaped surface, the second arc-shaped surface and the vertical surface to form a sound wave channel. The sound box horn structure is formed by combining the horn upper cover and the horn lower cover, and sound waves are effectively transmitted outwards from the loudspeaker unit through the two sound wave channels, so that the sound transmission is more stable, the directivity of the sound waves is enhanced, the sound waves are transmitted more accurately, and the intermediate frequency efficiency of the sound box is improved.

The application provides a double-cavity double-structure double-vibration-membrane high-frequency horn structure and relates to the field of acoustic devices. The double-cavity double-structure double-vibration-membrane high-frequency horn structure comprises a frame, a U cup, a first magnetic circuit assembly, a second magnetic circuit assembly, a first voice coil, a second voice coil, a first vibration membrane and a second vibration membrane. The U cup is arranged in the inner cavity of the frame, the U cup comprises a base plate part and a ring part which are connected to each other, the base plate part and the ring part enclose a front cavity, the first magnetic circuit assembly is arranged in the middle part of the front cavity, the second magnetic circuit assembly is arranged at the side part of the front cavity, the first voice coil is arranged between the first magnetic circuit assembly and the second magnetic circuit assembly, the first vibration membrane is connected to the first voice coil, the first voice coil is suspended in the front cavity, and the U cup is provided with a ring-shaped slot hole. The high-frequency horn structure has high electric energy and sound energy conversion efficiency, and has high overall output and power.

The utility model relates to a radio frequency coaxial load structure, and provides an adjustable high-precision equal-phase load structure in order to solve the problem that the existing radio frequency coaxial load is inconsistent in electrical length, and the adjustable high-precision equal-phase load structure comprises an outer shell, an insulating medium, an inner conductor, a load resistance tuning assembly and a rear cover, the rear end of the inner conductor extension section is provided with a blind hole, and an elastic body is arranged in the inner conductor extension section; the load resistor tuning assembly comprises a tuning bushing and a load resistor, the tuning bushing is of a horn structure, an elastic clamping seat is arranged on a through hole in the small end of the tuning bushing, the front end of the load resistor penetrates through the blind hole and then is connected with the inner conductor through an elastic body, and the rear end of the load resistor penetrates through the through hole in the small end of the tuning bushing and is connected with the elastic clamping seat; a tuning external thread is arranged on the circumferential face of the outer side of the tuning lining, a tuning internal thread matched with the tuning external thread is arranged on the inner wall of the outer shell, and the phase relation among the load resistor, the elastic body and the outer shell can be adjusted through the elastic clamping base.

The invention provides a miniaturized ultra-wideband high-gain double-sided thick convex lens loaded horn antenna, which is used for solving the problem that an existing horn antenna cannot meet the use requirements of a miniaturized ultra-wideband high-gain system. Comprising a rectangular waveguide structure, a double-ridge horn structure and a double-faced thick convex lens which are connected in sequence, and the double-faced thick convex lens is a symmetrical convex lens; the focal length F0 of the double-sided thick convex lens is F0, the radius R of a sphere forming the double-sided thick convex lens is R, the wavelength is corresponding to the minimum working frequency, and A and B are respectively a focal length control parameter and a sphere radius control parameter which are obtained by simulating the propagation process of electromagnetic waves in a medium. By simulating the propagation process of electromagnetic waves in a medium, the optimal focal length and sphere radius parameters are obtained to design the thickness of the double-sided thick convex lens, so that the double-sided thick convex lens can control the phase more accurately, and higher gain, higher efficiency and lower sidelobe are realized; and impedance matching is improved by using a thickness effect, so that a wider working bandwidth is obtained.

The utility model relates to the technical field of ultrasonic waves, and discloses a directive horn structure, at least two directive plates are rotatably connected with an external connection structure, the directive plates are arranged side by side, each directive plate comprises a sound wave part, the sound wave part is arranged on one side, far away from the external connection structure, of the directive plate, and the sound wave part is suitable for emitting ultrasonic waves. The sound wave direction is suitable for being perpendicular to the plane of the side, away from the external connecting structure, of the pointing plate, and ultrasonic waves emitted by the sound wave parts of every two adjacent pointing plates form double-slit interference; and the direction adjusting plate is simultaneously connected with the at least two pointing plates and is suitable for synchronously driving the at least two pointing plates to rotate relative to the external connecting structure. Through a double-slit interference ultrasonic structure, directional regulation and control of sound waves are achieved, at least two pointing plates arranged side by side are adopted to form an interference array, a sound wave part configured on each pointing plate can emit ultrasonic waves perpendicular to the plate surface, and it is ensured that adjacent sound wave sources form a stable double-slit interference field.

The application discloses a scanning leaky-wave antenna, which comprises a curved waveguide, a waveguide slot and a horn structure arranged in layers, and constitutes a plurality of array units. One end of the curved waveguide is provided with a feeding port. The curved waveguide is composed of a straight waveguide and a slow wave line structure. Matching structures are arranged on both sides of the straight waveguide in a staggered mode. The scanning leaky-wave antenna is composed of a plurality of array units. Because the reflection of the array units is superimposed at the center frequency, the application adds matching structures to each array unit to reduce the reflection of each array unit. In this way, the reflected waves of each array unit are no longer added in phase, and the transmission phase remains unchanged. The impedance matching at the center frequency can be realized without affecting the scanning radiation characteristics. The scanning leaky-wave antenna has the characteristics of center frequency impedance matching, high gain, symmetric large scanning range of ±45°, universality, low cost, simple design structure, low device complexity and suitability for large-scale manufacturing.

The invention provides a high-gain millimeter wave waveguide horn phased-array antenna unit based on an HTCC technology, and the antenna unit comprises an HTCC dielectric substrate which is formed by stacking a plurality of dielectric layers in the vertical direction, and each dielectric layer is internally provided with a metalized through hole array which is arranged along a specific path; the waveguide cavity is enclosed by waveguide walls formed by metalized through hole arrays in the multiple dielectric layers; the feed structure comprises a coaxial line fed from the bottom of the antenna unit, an inner conductor of the coaxial line extends into the waveguide cavity and is connected with a metal patch, and the metal patch is electrically connected with the waveguide wall of the waveguide cavity; and the multi-stage stepped horn structure is arranged in the HTCC dielectric substrate, is stacked above the radiation port of the waveguide cavity, and comprises at least two stages of stepped cavities with waveguide walls formed by metalized through hole arrays. The three-dimensional waveguide horn structure is planarized and multi-layered by using the HTCC technology, the embedded waveguide cavity and multi-step horn structure design is realized by using the HTCC technology, and the advantages of high gain and easy planar integration are achieved.

The utility model relates to the technical field of horn structures, and provides a ceiling horn convenient to install, which comprises an installation ring and a horn main body arranged on the installation ring, the loudspeaker body comprises a base and an outer shell arranged on the base, an opening of the outer shell extends outwards to be provided with a first annular step, a plurality of bolts penetrate through the first annular step to be in threaded connection with the base, an iron net is further arranged below the base, and a plurality of magnets are embedded in the end face, away from the outer shell, of the base. And the iron net is adsorbed on the base through the magnet. According to the ceiling horn, the first annular step is arranged on the outer shell, specifically, the outer shell can be locked on the base through a plurality of bolts, so that the ceiling horn is convenient to disassemble when follow-up maintenance or repair is needed, and the service life of the ceiling horn is prolonged; furthermore, the magnets are arranged to attract the iron net on the base, when cleaning is needed, the iron net can be taken down by applying external force, and cleaning is convenient.

The invention discloses a horn structure and a sound equipment product, and relates to the technical field of electroacoustic products, and the horn structure comprises a basic part which is provided with a basic horn, the basic horn is provided with a first throat part and a first mouth part, and the first throat part is used for connecting a loudspeaker unit; the extension type piece is provided with an extension horn, the extension horn is provided with a second throat part and a second mouth part, the second throat part is in sealed butt joint with the first mouth part, and sound waves emitted by the loudspeaker unit are radiated to the outside from the second mouth part; and the connecting assembly is connected with the basic part and the extension part, and the basic part and the extension part are detachably connected through the connecting assembly.

The utility model discloses a side-sounding horn structure, which comprises a shell and a loudspeaker, the shell is provided with an inner cavity, the inner cavity comprises a resonant cavity and a sound guide channel communicated with the resonant cavity, two ends of the sound guide channel are provided with a sound inlet and a sound outlet, the sound guide channel is provided with a cone, and the cone is provided with a loudspeaker. The cone is used for enabling the sound guide channel to be nonlinear; the inner cavity and the sound guide channel are located on the same horizontal plane, the sound outlet is formed in the side wall of the shell, the loudspeaker comprises a magnetic circuit assembly arranged on the shell and a vibrating diaphragm matched with the magnetic circuit assembly, the vibrating diaphragm and the bottom wall of the resonant cavity are oppositely arranged, and the vibrating diaphragm and the sound inlet are located on the same horizontal plane. Through the design of the cone, the sound guide channel is in a non-linear shape, then high-frequency sound pressure reduction caused by high-frequency resonance can be restrained, through the arrangement of the cone, the curve of the sound guide channel can be set to be opposite to the curve of the high frequency, the sensitivity of the high frequency can be improved, resonance is avoided, and then the sound pressure is improved.

The utility model discloses a kind of horn structure of non-directional loudspeaker, it is related to speaker design field, including horn body and loudspeaker box body, horn body is fixedly installed in loudspeaker box body;The front side of loudspeaker box body is integrally formed with multiple sound holes, horn body is covered and installed in the front side of sound hole;Four ends of horn body are formed with mounting hole, four ends in sound hole are slidably fitted and installed with sliding column, the middle portion of sliding column front end is formed with bolt hole, horn body is screwed through mounting hole and is screwed and locked in bolt hole;Compared with prior art, the utility model can manually fine tune the position of four ends of horn body, realize the fine tuning of sound amplification effect, can be applicable to different application scenarios, different sound amplification effects can be realized by the way of slight deformation of horn body, make sound more clear and transparent, realize non-directional loudspeaker adjustment.

This utility model discloses an optimized structure for a dual-circular magnet single-sided vibration-damping speaker, including a diaphragm, voice coil, frame, and magnetic circuit. The magnetic circuit includes a magnetic cup, a central magnet, and a central pole plate, as well as dovetail-shaped first and second vibration-damping springs. The magnetic cup is a flat plate structure with both its front and rear faces being planar. The first and second vibration-damping springs are symmetrically arranged on the front face of the magnetic cup and are positioned and assembled with frame positioning posts on the frame through spring positioning holes on the first and second vibration-damping springs. The magnetic circuit also includes an annular magnet and an annular pole plate. The central magnet and the annular magnet are both located at the center of the front face of the magnetic cup, and the annular magnet is coaxially arranged around the central magnet. The central pole plate is coaxially arranged on the front face of the central magnet, and the annular pole plate is coaxially arranged on the front face of the annular magnet. This speaker structure, with its split vibration-damping springs, is less prone to deformation, reduces the amplitude of the box shell, and improves loudness.

The invention relates to a horn loading slot antenna, belongs to the technical field of slot antennas, and solves the technical problem of high cost of an existing millimeter wave antenna. The horn loading slot antenna comprises a metal radiation layer and a horn structure, and the metal radiation layer is provided with a radiation slot and a choke slot. The horn structure is formed by a plurality of plate bodies in a surrounding mode and installed on the metal radiation layer, the radiation gap is located in the horn structure, and the choke gap is located outside the horn structure. The horn loading slot antenna can reduce loss and improve efficiency through the horn structure formed by the multiple plate bodies, has the advantages of being low in standing wave, high in bandwidth, simple in structure and the like, achieves the function of power division feed of a traditional waveguide slot antenna, reduces cost, and meanwhile, the multiple plate bodies formed by the horn structure are simple in structure and lower in processing cost.

The utility model discloses a low-flow-rate high-efficiency direct-current power generation device, which belongs to a low-flow-rate power generation device in the technical field of power generation equipment, and adopts the technical scheme that the low-flow-rate high-efficiency direct-current power generation device is provided with a support frame and comprises a duct pipe fixedly arranged between two horn units and used for communicating the two horn units; the axial flow turbine blades are rotationally arranged in the duct pipe; the disc type generator is fixedly arranged on the supporting frame, and the disc type generator is connected with a rotating main shaft of the axial flow turbine blade through a belt assembly; a blade type winding coil assembly and a rotor magnetic strip assembly are arranged in the disc generator; the utility model provides a low-flow-velocity high-efficiency direct-current power generation device, which adopts a double-horn structure to increase the flow velocity of fluid and increase the rotating speed of blades, so that the efficiency of a power generator is improved, and high-efficiency power generation in the scene of low wind speed and liquid fluid without water head fall is realized.

The application provides a miniaturized ultra-wideband high-gain horn antenna loaded with double-sided thick convex lenses, which is used to solve the problem that the existing horn antenna cannot meet the use requirements of a miniaturized ultra-wideband high-gain system. The horn antenna comprises a rectangular waveguide structure, a double-ridge horn structure and a double-sided thick convex lens connected in sequence, and the double-sided thick convex lens is a symmetrical convex lens. The focal length F0 of the double-sided thick convex lens is F0 = (2 * A) / B, and the radius R of a sphere constituting the double-sided thick convex lens is R = (2 * A) / B, wherein: is the wavelength corresponding to the minimum working frequency, and A and B are the focal length control parameter and the sphere radius control parameter obtained by simulating the propagation process of electromagnetic waves in a medium, respectively. The application obtains the optimal focal length and sphere radius parameters by simulating the propagation process of electromagnetic waves in a medium, designs the thickness of the double-sided thick convex lens, so that the phase can be more accurately controlled, higher gain, efficiency and lower sidelobe can be realized, and the thickness effect is used to improve impedance matching, so that a wider working bandwidth can be obtained.

The utility model relates to the technical field of loudspeakers, in particular to a loudspeaker structure and a loudspeaker. The loudspeaker structure comprises a base, a sound amplifying seat and a vibrating diaphragm, the sound amplifying seat covers the base, so that a sound outlet cavity is defined by the sound amplifying seat and the base, a plurality of sound inlets are formed in one side, facing the base, of the sound amplifying seat, and the sound inlets are communicated with the sound cavity; the plurality of sound inlets are arranged around the center of the sound amplification seat; the vibrating diaphragm is arranged on one side, facing the base, of the sound amplification seat and comprises an annular folding part, and the annular folding part is positioned in the sound cavity and is arranged in front of the plurality of sound inlets in a blocking manner; and the annular folding part is used for being matched with the moving coil unit to vibrate. The loudspeaker structure can improve the propagation accuracy of sound waves in the loudspeaker structure, and effectively improves the sound amplification effect.

The utility model discloses a plane horn structure which comprises a plastic basin stand, the inner side of the plastic basin stand is provided with a step, the step, the bottom of the plastic basin stand and the side wall of the plastic basin stand form an accommodating cavity used for wrapping the edge of a lower outer magnet, and the center of the lower outer magnet is provided with a lower inner magnet. The objective of the utility model is to solve the problem that a conventional loudspeaker PCB falls off and is noiseless. The plane type upper and lower magnets, the voice coil and the diaphragm are adopted, the height space is saved, the integrated embedded bonding pad is welded through injection molding, a PCB is omitted, voice coil wire welding is facilitated, the length of the voice coil wire is reduced, the soundless risk is avoided, the lower outer magnet is wrapped by the inner positioning of the plastic basin frame, the lower outer magnet does not need to be bonded through glue, and the manufacturing cost is reduced. And the lower outer magnet is also prevented from falling off.