Patent Translate Powered by EPO and Google Notice This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate, complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or financial decisions, should not be based on machine-translation output. DESCRIPTION JPS49102324 Patent Office Director Yukio Miyake 1, Title of Invention 2, Inventor 6, Patent Applicant 4, Agent ■ Japan Patent Office ■ JP-A-49-102324 [Fa] Published Japanese Patent No. 49. (1974) 92 "t" ■ Japanese Patent Application No. 4g-II and 4 '/ ■ Application BEf & J', (197,? ) / J / Request for examination not yet issued (4 pages in all) Description 簀 1, title of the invention] 1, title of the invention] speaker device Speaker device The present invention relates to a speaker device for motional feed back (qll <MFB) using a Hall element as a detection element. Heretofore, the MFES system is known as a writing system which reduces the distortion of an audio signal including a speaker in the front of an audio device to reduce the distortion of an audio signal and which is faithful to the human power No. 1g. This is to separate the voice detection coil from the voice coil separately from the voice coil on the coil hobin connected to the cone-shaped vibrating body of the speaker to avoid mutual interference in one row of the whiss coil to avoid such mutual interference. And when the motor is driven by applying an electrical signal to the voice coil, the detection coil is induced with the drive EndPage: 1 The electric signal is taken out, and this signal is negatively fed back to the amplifier in front of the speaker through the compensation circuit or amplifier. However, because the conventional loudspeaker that helps is wound on the coil bobbin in relation to winding the whiss coil and the detection coil, the dimensions and shape of the bobbin are required to be voluntarily large, and the loudspeaker has to be large and valued. However, it may be possible to wind the detection coil of the F9Iy, but in this case the sound pressure level of the speaker may decrease or the production may become complicated. The present invention has been conceived on the basis of the above-mentioned drawbacks, in which only the voice coil is wound on the bobbin, and instead of the detection coil, the Hall element is disposed in the magnetic space in front of 08-05-2019 1 the central magnetic pole portion. The generated voltage of the Hall element is compounded based on the drive of the coil, and the generated voltage thus obtained is applied to the input side of the amplifier on the front stage of the speaker to compensate the compensating circuit or the stage. It is something which is made to return. The present invention will be described below based on examples. In the figure, (1) is a magnet, (2) is a central a-pole part, and (3) is a yoke formed by a magnetic & part (4) having an annular ridge. In this case, the central magnetic pole part (2) is an S pole, and the broken magnetic pole part (4) is N misery. Between the central magnetic pole part (2) and the lozenge magnetic pole part (4), the magnetic nitrogen 1! J (5) is annularly formed. (6) Hachorihobin, to which the Heus coil (7) is dedicated, the leads m of this coil being glued to the terminals (not shown) provided on the frame in a known manner. The coil bobbin (6) has one end supported by the cone spinner moving body (8i and tan-<-t91 so that the coil S (7) is present in the above-mentioned magnetic gap (5), and the magnetic gap (5 ) Is freely inserted into the drive. 1101 is a Hall element, and the magnetic pole portion 12. It is attached by N-casting on the document body uIJ so that the magnetic field lines of lt April i pass well. 靜 6 self-hole elements are generally used, and one example of the dimensions is a 5 × 5 × 2 w rectangular solid and extremely ring-shaped semiconductor with a current terminal and a voltage terminal. Each of these terminals is coupled to the respective terminals provided on the frame by leads similar to the case of the above-described whiss coil. The end member αυ is made of a nonmagnetic material such as a tube or sleeve similar to the coil bobbin and is attached to the bobbin in front of the central magnetic pole portion (2). The hall element shouting and supporting member 1 can be covered with a cap so as not to be seen from the front of the speaker. 〔2はフレ7ムである。 In FIG. 2, u is a bud-dio amplifier, 041 is an input signal terminal, <151 is a current source for energizing the Hall element, and a scream is a Hall element (1010 generation w, the feedback amount of the tail is It is a compensation circuit or amplification 6 to adjust. The spee jj device of the present invention is configured as described above, and the 70 'operation will be described next. The input signal applied to the terminal I is amplified by the amplifier u5 and supplied to the Heus coil (7) . However, the voice coil is converted into a speech signal by means of a full cone-like oscillator in the air gap (5) in accordance with the above-mentioned sign. In this condition, the Hall element cries with the voice coil (7) to move integrally and generate a voltage according to the change of the magnetic field. EndPage of such generated voltage: Because it differs depending on the size, frequency or the structure of the speaker of the signal applied to the two-magnitude-poise coil, this generated voltage is adjusted by adjusting the feedback component and amount via the compensation circuit or amplifier. If one or more buttons of the amplifier in front of the speaker are supplied as a button, the signal distortion of the entire amplification system including the speaker can be reduced and the sound reproduction faithful to the original sound can be obtained over a wide frequency band. In the invention, the Hall element α 一体 is integrally mounted on the bobbin (6) in the front magnetic space j of the central magnetic pole portion (2) of the speaker via the support member 0υ, and the generated voltage 08-05-2019 2 of such Hall element is used to drive the voice coil. Because the speaker device is designed to be changed and deposited based on the above, the speaker itself does not become large, and furthermore, the manufacture can be extremely easy and inexpensive, and Since an element has advantages such as long service life without seconds pole portions different from the coil or the like (2) (in contact with the 41 or break it and generate noise. 4. Brief description of the drawings] FIG. 1 is a side longitudinal cross-sectional view of the speaker apparatus according to the present invention, and FIG. 2 is a main part system of the amplification system in the audio apparatus for explaining the operation of the speaker apparatus according to the present invention. FIG. 1, magnet 11: support member 2: central magnetic pole 12: frame 6: yoke 13: amplifier 4 JJI-like magnetic pole 14: input terminal 5: magnetic gap 15: current source 6: bobbin 16: Compensation circuit to amplifier 7: Voice coil 8: Cone 9: Damper 10: Hall element. Attorney Attorney Yuasa Kotoyu Attorney Attorney Attorney Kohei Ikenaga Attorney Attorney Attorney 1) Michio EndPage: 35, List of attached documents (1) One letter of attorney (following supplement) (2) One statement (3) 1 drawing (2) Agent-Address, 2nd District, Otemachi, Chiyoda-ku, Tokyo No. 206 New Otemachi Building Room Name (6355) Patent Attorney Ikenaga Kotobuki Address Address Name (6196) Patent Lawyer Stone-Michio Tadashi, EndPage: 4 08-05-2019 3
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