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Planar series mangnetic circuit and electricity-mechanism-sound transducers using the magnetic circuit

A technology of acoustic transducers and series magnetic circuits, applied in the direction of sensors, electrical components, etc., can solve the problems that the energy conversion efficiency cannot meet the high efficiency, low energy consumption, and inability of micro-phones, so as to make full use of space, widen the frequency band, The effect of great flexibility

Inactive Publication Date: 2006-04-19
王兴荣
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, regardless of the use of external magnetic or internal magnetic structures, due to the constraints of space and structure, the well-designed ordinary electric internal magnetic or external magnetic circuits still appear to be powerless, and their energy conversion efficiency still cannot meet the high requirements of miniature mobile phones. Efficiency and low energy consumption requirements, ordinary internal magnetic or external magnetic electric transducers, especially the sensitivity of speakers, can no longer meet the above requirements

Method used

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  • Planar series mangnetic circuit and electricity-mechanism-sound transducers using the magnetic circuit
  • Planar series mangnetic circuit and electricity-mechanism-sound transducers using the magnetic circuit
  • Planar series mangnetic circuit and electricity-mechanism-sound transducers using the magnetic circuit

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Embodiment Construction

[0036] Such as Figure 5, the planar series magnetic circuit of the present invention, the first magnet 32, the first pole plate 31 that is stacked on top of the magnetic permeable plate 18, the magnetic permeable plate 18 form the first magnetic field forming part 30; share with the first magnetic field forming part 30 The second magnet 21 and the second pole plate 22 stacked on the magnetic permeable plate 18 and the magnetic permeable plate 18 form the second magnetic field forming part 20; the second magnetic field forming part 20 is arranged on the periphery of the first magnetic field forming part 30 and is provided with The prescribed magnetic gap 23; the polarity of the first magnet 32 ​​and the second magnet 21 are opposite.

[0037] The cross-sectional shape of the second magnet 21 is hollow, such as ring, square, polygonal, etc. The cross-sectional shape of the second pole plate 22 is matched with the second magnet 21 , the size is equivalent, and it is stacked on t...

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Abstract

A plannar serial magnetic circuit includes a first magnetic field forming part formed by a magnetic inductive sheet, a first magnet stacked on upper part of the magnetic inductive sheet and a first electrode sheet; a second magnetic field forming part formed by a second electrode sheet, a second magnet stacked on upper part of magnetic inductive sheet which is used in common with the first magnetic field forming part. The second magnetic field forming part is set on outer-ring of the first one and a magnetic gap is also set according to the rule and the polarity of the first magnet is opporsite to the secone one so that the energy exchanging device of electric-mechanical-sound can be formed by the magnetic circuit and electric conductive wire or coil elongated in the gap as well as a vibration membrane, a cover plate and attachment.

Description

technical field [0001] The invention relates to the design of a miniature magnetic circuit and an electro-mechanical-acoustic transducer using the magnetic circuit. The transducer is especially suitable for miniature and small electronic products. Background technique [0002] GPRS, CDMA, GSM mobile phone, IP phone miniature terminal equipment, voice dictionary, notebook computer, PDA, portable liquid crystal display TV, miniature transmitter and receiver (transceiver) and electronic toys and other novel electronic products. Modernization and low energy consumption are the current research direction and development trend. [0003] Electromagnetic transducers have relatively high transduction efficiency, but their electroacoustic performance has been difficult to meet the requirements of new mobile phones and even telephones. Electromagnetic transducers that have been used for more than 100 years have been used since the early 1990s. It had to quiet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R13/00H04R9/02
CPCH04R9/025
Inventor 王兴荣
Owner 王兴荣
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