Unlock instant, AI-driven research and patent intelligence for your innovation.

Electroacoustic transducer having sensing function

An electro-acoustic converter, functional technology, applied in the direction of sensors, electrical components, etc., can solve the problems of large impedance, inconvenience, and low induction sensitivity

Active Publication Date: 2015-04-01
MERRY ELECTRONICS (SHENZHEN) CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] figure 1 Shown is the current existing electro-acoustic converter 1, which is combined with a circuit board 2 at one end. The circuit design only has the positive / negative poles of the sound signal input, which cannot achieve the effect of electrostatic protection. Therefore, some people in the industry have designed such figure 2 Another existing electro-acoustic converter 3 shown in the figure is provided with a grounding terminal 5 on the upper cover 4, and the upper cover 4 and the grounding terminal 5 are made of metal or conductive carbon or other conductors, and are connected through the grounding terminal 5. The grounding wire of the main board of the mobile phone is used to protect the electrostatic protection of the mobile phone circuit board
[0004] However, although the above-mentioned electro-acoustic converter 3 has the function of electrostatic protection, the impedance of the ground terminal 5 connected to the ground wire is relatively large, resulting in low induction sensitivity and poor shielding effect. The ground wire of the main board of the mobile phone and the ground terminal 5 must There is a proper connection position arrangement, otherwise it will cause trouble and inconvenience in assembly

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electroacoustic transducer having sensing function
  • Electroacoustic transducer having sensing function
  • Electroacoustic transducer having sensing function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] image 3 Shown is a schematic diagram of the exploded structure of the electro-acoustic transducer with inductive function described in this embodiment. The electroacoustic transducer 100 includes a yoke 10 , a magnetic circuit system 20 , a vibrating membrane 30 , a cover 40 , a circuit board 50 and a ventilation piece 60 .

[0030] The yoke 10 is in the shape of a basin, which is used to accommodate the magnetic circuit system 20 and the magnetic circuit system membrane 30. There are several air holes 11 on the peripheral ring of one side of the base 10 to make the space in the basin communicate with the outside world, and one side of the air hole 11 is provided with an integrated The formed positioning column 12 is integrally formed with the yoke 10 and extends outward.

[0031] The magnetic circuit system 20 includes a magnet 21, a guide disk 22 and a voice coil 23. One side of the magnet 21 is placed in the yoke 10, the guide disk 22 is placed on the other side of...

Embodiment 2

[0039] Figure 5 and Figure 6 Shown is the exploded structure schematic diagram and the assembled structure schematic diagram of the second embodiment of the electro-acoustic transducer with inductive function of the present invention. In this embodiment, the ventilation sheet 60 , the magnetic circuit system 20 and the vibrating membrane 30 described in the previous embodiment are not shown for simplicity. The difference between this embodiment and the previous embodiment is that the cover 40 is protruded with a slightly inverted L-shaped end pin 42, and the yoke 10 has an auxiliary end pin 13 that is bent to a peripheral edge and is slightly inverted L-shaped, and the yoke The iron 10 is provided with a notch 14 on the side of the auxiliary end pin 13, so that when the cover 40 is combined with the yoke iron 10, the end pin 42 can pass through the notch 14 and contact the induction pad 53 of the circuit board 50 on the yoke iron 10 to form a lead. The auxiliary terminal p...

Embodiment 3

[0041] Figure 7 and Figure 8 As shown, it is a schematic diagram of an exploded structure and a schematic diagram of an assembled structure of the third embodiment of the electro-acoustic transducer with inductive function of the present invention. The difference between this embodiment and the previous embodiments is that the yoke 10 is provided with a positioning hole 15, and a metal pin 70 is passed through and fixed on the combination hole 54 of the circuit board 50 and the positioning hole 15 of the yoke 10, so as to The circuit board 50 is fixed on the yoke 10 to form the conduction between the yoke 10 and the circuit board 50 , and the yoke 10 can be connected to the outside through the induction line.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an electroacoustic transducer having a sensing function, which comprises a yoke iron, a magnetic circuit system, a vibration membrane, a cover and a circuit board, wherein the magnetic circuit system is arranged inside the yoke iron; the vibration membrane is driven by the magnetic circuit system; the cover is connected with one side of the yoke iron and is provided with a plurality of phonate holes; and the circuit board is provided with an anode and a cathode and is used for inputting an acoustic electric signal, the circuit is provided with a sensing welding tray, the circuit board is connected with the other side of the yoke iron, and the yoke iron is provided with a part which is connected and communicated with the sensing welding tray. The yoke iron is connected with the sensing welding tray of the circuit board to form a communication state, so the electroacoustic transducer can be connected with external devices, the internal structure of the electroacoustic transducer can be protected, and the sensing function can be realized.

Description

technical field [0001] The invention relates to the field of electro-acoustic converters, in particular to a structure in which a yoke of an electro-acoustic converter is connected to a circuit board with an inductive function and can form a shielding effect to protect the interior of the electro-acoustic converter. Background technique [0002] With the continuous advancement of science and technology, the development of various electronic products is faster. Among them, the electroacoustic converter is an important component of the sound output end of the electronic product. With the lightness and thinning of electronic products, the requirements of the electroacoustic converter It is also designed in the direction of miniaturization, high sound quality, and low cost, in order to meet the needs of the market. [0003] figure 1 Shown is the current existing electro-acoustic converter 1, which is combined with a circuit board 2 at one end. The circuit design only has the po...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04R9/06H04R9/02
Inventor 何鸿钧林毓伦梁伟兴
Owner MERRY ELECTRONICS (SHENZHEN) CO LTD