TW457829B - An electromagnetic acoustic transducer - Google Patents

Abstract

This invention introduces an electromagnetic acoustic transducer. The transducer has two long and thin movable coils installed lengthwise on one side of a vibration plate, which has a length to width ratio more than five. A serpent type of edge supports the rim of the vibration plate. That enables the plate to vibrate freely and places the two movable coils in the magnetic path. The aforementioned design constitutes the electromagnetic acoustic transducer. Since the vibration plate vibrates in full scale, sound rises and drops very well and the excessive characteristic is also excellent. Besides the waveform is plane wave, the original sound can be reproduced in fidelity. From heavy bass to ultrasound, all can be transformed by using this acoustic transducer. It is also an excellent design for speakers to reproduce sound in certain bands.

Description

V. Description of the invention Cl) The present invention relates to the design of an electromagnetic acoustic transducer, in particular an electromagnetic acoustic transducer that uses a line sound source, a plane wave, and a full vibration method to faithfully reproduce part of the band or domain sound. The traditional use of more than 70 years of Dynamic Corn Speaker,

Cor η-shaped, the ring-shaped movable coil in the center part vibrates by a magnet.

Dynatnic Corn Speaker's sound source is point-shaped, so the surface wave of sound, coupled with the random reflection caused by the split vibration of Corn, will cause the sound source to become multiple, and the same sound source will repeatedly stimulate the periosteum, producing the so-called Speaker sound that cannot be truly original. At the same time, the Roi 1 design used by traditional speakers is in phase opposite to the edge of the vibration plate, and sound sources other than a certain number of cycles will cancel each other out and disappear. In other words, the sound in the range of 20112 ~ 201 (112 cannot be displayed by a single speaker at the same time. It must be divided into a bass, a midrange and a treble meter. The traditional shape of the σ is mainly a graphic or an oval. The large magnet, coupled with the sound, must not be excessively reduced by the overall volume of the speaker. In recent years, LCD, P 1 asma and projection TVs have become more and more popular, and the demand for relatively loudspeakers has become higher. Although traditional speakers are becoming thinner, do n’t forget The thickness still has its limit of reduction, and at the same time, it cannot achieve the ideal height. The inventor has been engaged in the development of traditional lap eight for many years. Although several items have improved the shortcomings of traditional speakers, they are not complete because they generate surface sound sources. Overcome the above shortcomings. Refers to a full driving board for the ball to reproduce the edge. Because the phase is unavoidable, it is ultra-thin but the sound quality is clearly changed. 45 782 9

V. Description of the invention (2) Based on the above market demand, the inventor tried to replace the surface sound source with a sequential line sound source, and succeeded. The traditional Dynami c Corn Speaker signal enters to make v〇i Ce Coi 1 vibrate, and then the Corn paper responsible for sound source regeneration will vibrate, but the vibration of corn paper will not only have a time difference, its vibration is also divided into vibrations, plus it must pass through Dam Per control, the excessive characteristics are not good, it is very difficult to completely reproduce the original sound. The β point sound source will be instantly converted into a spherical wave. The sound will also diffuse in a spherical shape. The sound pressure in the spherical sound wave and the velocity of the vibrating particles cannot be consistent, so the orientation is generated. Poor, it will turn into a plane wave only when passed to a considerable distance. In contrast, both the line sound source and the surface sound source are plane waves, so the sound migration and the velocity of the vibrating particles are in the same phase from the beginning. For this reason, the main object of the present invention is to propose a new proposal on the technical level, using an electromagnetic sound converter that uses a line sound source, a plane wave, and a full-vibration method to faithfully reproduce part or all of the band sound. In order to achieve the above object, the present invention is implemented as follows: The present invention uses a line sound source, a plane wave, and a full-vibration method, which is opposite to a spherical wave (without split vibration). Since the vibration plate is a full-vibration type, the sound rises and falls very well, and the transition characteristics are also good. The original sound can be reproduced faithfully. From the subwoofer to the supersonic wave, it can be converted by this electromagnetic acoustic transducer. It is also an excellent design if it is used as a part of the band regeneration system. Basically, one or more (two or more) movable coils are placed on the vibrating plate in a lengthwise direction on one side of the slender vibrating plate with an aspect ratio of 5 to 1 or more, and the periphery of the slender vibrating plate is to allow the vibrating plate. Free vibration R 〇 1 1 E dge design

V. Description of the invention (3) The meter is held. This is the basic idea of the present invention. The movable coil can also be an elongated structure extending in the longitudinal direction of the vibration plate. The vibration plate can also be attached to the periphery of the plate with a snake-shaped E dge. It can be shaken by zero. Therefore, two long and thin movable coils are arranged on the vibrating plate which is more than 5 times longer than the long-term ratio. The upper edge of the vibrating plate is supported by the bellows edge so that the vibrating plate can vibrate freely. 0 The two movable coils are arranged in the magnetic circuit. The above constitutes the battery acoustic transducer of the present invention. In order for your reviewing committee to understand the characteristics, features and functions of the S of the present invention, the following specific embodiments are used in conjunction with the attached The drawings illustrate the present invention in detail. Line sound source, plane wave, full vibration mode, partial band and full band faithful reproduction principle are illustrated graphically. 0 Figure 1 Figure 3 shows the structure of a faithful reproduction electromagnetic sound converter in part of the band. 1 in the figure is electromagnetic The main body of the sound transducer is 02. The length of the slender vibration plate that can meet the requirements of comprehensive vibration must be more than 5 〇3 is the movable coil integrated with the vibration plate. The movable coil is also elongated like the vibration plate. Two movable coils — in the case of front-to-back configuration. 3 is the movable coil in the figure. The movable coil can be circular or oval. The number can be one. However, if the movable coil is circular and you want to obtain faithful reproduction sound quality, you must At the same time, configure the edge of two or more 0 vibration plates 2 to contact the edges of Roll Edge 4 to make them comfortable. Movable r ^ " ί) to produce a magnetic loop of permanent

/ 1 ^ 782 9 V. Description of the invention (4) In recent years, the neodymium design is thin, small conductors 6, 7 to 3 a must be configured with b pass, 1 1 1 c is the right picture of the speaker 4 ~ 6 plate 1 3 moving plate perimeter The type of moving coil permanent magnetism plate 1 requires a separate up and down shock diagram for the lower vibration. '22 The right side shock is required to be above, the side, and the 15a 1 4 stone 1 6 3 can be borrowed. Due to the movement of the shock absorber, Figure 3 ~ a shows the outer panel. The size of the moving plate 2 is a magnetic type, and the poles are on the side of the magnetic a. The two Ming and the 1 coil are formed by the snake 15, more special 6, edge, stone and other rectangles to produce the boundary 8 shell plate. Using a strong belly-shaped a that can fold 5 b14 and a non-existent 2 0 2 2 can be started at a lower price when it is magnetically strong, which is very convenient for sound speakers. The magnets can be in the coils of the strong magnetic field 8 made of iron and the movable coil 3. The driving current is from the upper edges of the terminals 1 0 a and 10, 1 1 b is the left side panel of the speaker, 1 the bellows type moving coil is passed and immersed) connect a configuration force magnetic field 15a 15b reverse 15 is often excellent for the base plate b for the sound suspension setting 1 4 The above silicon rubber makes the shock be guided by the iron 19, 15 upper and lower limit vibration plates, all with boxes, and 2 boxes on the left side of the inline resin moving plate guidance. All of b have 1 3 of the meeting area 1 a of panel example 0 and the suspension is 1 set, the extension and extension are in Xin Kezhong and 2 and 2 in the fine arrangement of the paper (hanging 7, and the number of free impedance is correct) Then lb long vibration, snake state in the seismogram. It can be carried out with 18 and slender earthquakes, so it is not instantaneous. The terminals are speakers or vibration plates. 1 3 5 are cut with strong and flexible synthetic resin. Instead of thicker materials such as Basam, the core 3 b of the movable coil 3 or the core 1 4 b of the movable coil 1 4 is made of paper or aluminum. Around the core 3 b or 1 4 b Wind up

Page 7 V. Description of the invention (5) Electric wire, and then stick it on the vibration plate 2 or the vibration plate 1 3. Taking the second example of the present invention as an example, the produced electromagnetic acoustic transducer has a regeneration frequency of 40HZ ~ 40KHZ, a sound pressure level of 88db / lw / lm, a line sound source attenuation of -3db / dd the same as the theoretical quality, and a spherical wave The distance attenuation is -6db / dd. Because the vibration plate is a full-vibration type, the sound rises and falls are very good, and the transition characteristics are also good. In addition, the waveform is a plane wave, and the original sound can be faithfully reproduced. From heavy bass to supersonic waves, this electromagnetic sound converter can be used for conversion. It is also an excellent design if it is used for partial band regeneration. This electromagnetic acoustic transducer has ideal shape characteristics such as thinness, lightness, and slenderness after being put into practical use, and also has high sound quality characteristics. Therefore, in addition to televisions, its small size is suitable for use in mobile tools such as computers, trams, automobiles, and aircraft In terms of high sound quality, it is suitable for use in residential, high-end audio, and professional audio applications. It has high industrial use value, conforms to the high technical idea of natural law of invention, and applies for an invention patent according to law. Although the present invention is disclosed as above with a preferred embodiment, it is not intended to limit the scope of implementation of the present invention. Anyone skilled in this art can make some changes and retouches without departing from the spirit and scope of the present invention, that is, all equal changes and modifications made in accordance with the present invention should be covered by the patent scope of the present invention. The definition shall be based on the scope of patent application. 457829 Brief description of the drawings [Fig. 1] This is a cross-section illustration of the main structure of the electromagnetic acoustic transducer of the present invention. [Figure 2] A is the rear view of the slender vibration plate, the movable coil and the Roll Edge supporting the vibration plate in the example of Figure 1; B is the rear view of the surface plate. [Fig. 3] Another embodiment of the present invention. [Fig. 4] A is a rear view of the slender diaphragm in the example of Fig. 3, a movable coil integrated therewith, and a bellows-shaped Edge supporting the diaphragm. B is a front view of the permanent magnet poles with Pole Piec e installed. C is the front view of the chassis box. [Fig. 5] is a three-side view of the upper edge of the casing in the example of Fig. 2. [Fig. A is a front view, B is a back view, and C is a side view. [Fig. 6] An exploded perspective view after the components are exploded. Brief description of drawing number: 1 Partially faithful regenerative electromagnetic sound transducer with band 2 Slim vibration plate 3 Movable coil 3 a coil 3 b Roll frame 4 Roll Edge 5 Permanent magnet 6 Iron conductor

Brief description of the drawing 7 iron conductor 8 magnetic boundary 9 base box 1 0 a terminal 1 0 b terminal 1 1 a upper edge of the casing 1 1 b left side panel of the speaker 1 1 c right side panel of the speaker 1 2 full band faithful reproduction of electromagnetic sound transducer τ 3 Slim Vibration Plate 1 4 Movable Coil 1 4 a Coil 1 4 b Roll Frame 1 5 a Serpentine Edge 1 5 b Serpentine Edge 1 6 Permanent Magnet 1 7 Iron Conductor 1 8 Iron Conductor 1 9 Magnetic Circle Γ 0 Base Plate Box 2 1 a terminal 2 1 b terminal 2 2 a outer edge 2 2 b speaker left panel

/ 1 P; 7 32) Simple description of 圊 style 2 2 c speaker right panel

Claims (1)

6. Scope of patent application 1—A kind of electromagnetic. Responsive. Converter is attached to one side of an slender vibration plate with an aspect ratio of 5 to 1 or more, and one or more movable wire coils are placed in a longitudinal direction in an integrated manner. The vibration plate is supported by a Ro 1 1 Edge design that allows the vibration plate to vibrate freely, and the movable coil must be arranged within the magnetic boundary. 2—An electric and magnetic acoustic transducer is attached to one side of an elongated vibrating plate with an aspect ratio of 5 to 1 or more. One or two movable coils are placed on the vibrating plate in a longitudinal direction in an integrated manner. The bellows-shaped Edge design that allows the vibration plate to freely support the vibration plate, and the movable coil must be arranged within the magnetic boundary. 3. An electromagnetic acoustic transducer, which is attached to one side of an elongated vibration plate with an aspect ratio of 5 to 1 or more, and one or two elongated movable coils are placed on the vibration plate in a longitudinal direction in an integrated manner, and The Roll 1 Edge is designed to allow the vibration plate to vibrate freely, and the movable coil must be arranged within the magnetic boundary. 4 · An electromagnetic acoustic transducer, which is attached to one side of an elongated vibration plate with an aspect ratio of 5 to 1 or more, and one or two elongated movable coils are placed on the vibration plate in a longitudinal direction in an integrated manner, and The bellows-shaped Edge design that allows the vibration plate to vibrate freely supports the vibration plate, and the movable coil must be arranged within the magnetic boundary.