Electroacoustic changer with back terminal
An electro-acoustic conversion and terminal technology, applied in the direction of electrical components, telephone structure, circuit lead arrangement/elimination, etc., can solve the problems of complex positioning structure, increase the cost of communication equipment, etc., to promote miniaturization, improve contact stability, The effect of improving the degree of freedom of combination
Inactive Publication Date: 2005-05-04
NEC CORP +1
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
As a result, in order to improve the accuracy of the installation position of the receiver relative to the communication equipment, a complex positioning structure has to be adopted, which will obviously increase the cost of the communication equipment
[0006] Furthermore, in the third prior example, since the negative terminal is arranged in the annular upper end surface of the metal seal surrounding the disk-shaped microphone, it can be seen that the shape of the microphone will be enlarged due to the metal seal.
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0041] figure 1 is a schematic plan view of an electroacoustic transducer in an embodiment of the present invention, figure 2 is broken figure 1 A schematic side view of a part of the electroacoustic transducing device, image 3 overview along figure 1 Part of the enlarged schematic cross-sectional view of the line III-III, Figure 4 is a plan view showing the surface of the terminal block, Figure 5 is a plan view showing the back of the terminal block.
[0042] Such as image 3 As shown, the electroacoustic transducer A in the illustration is a dynamic type, and it is equipped with a magnet 1, a pole piece 2, a circular yoke 3 in a top view, a vibrating plate 5, and a voice coil 6 arranged in the vibrating plate 5 . From Figure 1~3 It can be seen that a protruding portion 31 that is circular in plan view is provided at the center of the yoke 3 , and the magnet 1 and the pole piece 2 are housed in the concave portion 32 inside the protruding portion 31 . The magneti...
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
Login to View More Abstract
The miniaturization and thinning of the electroacoustic transducing device are promoted by providing the back terminal on the back side of the yoke. No orientation problems when incorporated into communication equipment. On the exposed surface 33 of the yoke 3, the terminal block 7 having planar rear terminals is superimposed. The terminal board 7 has a tab portion 72 provided in the concave surface 35 of the yoke 3, and the end of the voice coil is soldered in the lands 83, 84 on the surface of this tab portion 72. The two rear terminals 81, 82 are composed of circular or ring-shaped planar electrodes arranged concentrically with each other, and can be elastically connected to the electrodes on the connector side formed by conductive rubber end faces or contact parts.
Description
technical field [0001] The present invention relates to an electroacoustic transducer, and in particular, to an electroacoustic transducer provided with rear terminals. Background technique [0002] Recently, along with the miniaturization and thinning of mobile communication equipment such as cellular phones, the miniaturization and thinning of electroacoustic transducers used in speakers and receivers of such communication equipment have also been greatly promoted. [0003] As this type of electroacoustic transducing device, there is a dynamic type disclosed in JP-A-10-164693. On the back side of this dynamic electroacoustic transducing device, two contact pieces made of bent elastic material are installed. , the respective contacts at the front ends of the two contact pieces are used to elastically connect with the electrodes of the connector (the first prior example). In the dynamic type receiver described in JP-A-11-355409, two surface electrodes are arranged in parall...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04R9/02H04M1/03H04R1/06H04R9/04H04R9/10
CPCH04M1/03
Inventor 深泽健治上村智彦藤原悟藤本直哉
Owner NEC CORP