Sound production device
A technology for sound-emitting devices and sound parts, which is applied to sensors, electrical components, etc., can solve problems such as sensitivity and other acoustic performance limitations, sound waves cannot be transmitted to the sound-emitting part, etc., and achieve the effect of good sensitivity and excellent acoustic performance.
Inactive Publication Date: 2015-03-18
AAC ACOUSTIC TECH (SHENZHEN) CO LTD +1
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] However, in order to maximize the driving force of the sound-generating device in the related art, its auxiliary magnetic steel is provided with a ring-shaped closed structure, and the orthographic projection of the sound-generating part to the diaphragm does not overlap with the magnetic bowl, which makes the diaphragm When the sound wave generated by the vibration reaches the sounding part through the inner cavity, the sound wave in the magnetic gap will be hindered by the secondary magnet and cannot be transmitted to the sounding part, thus limiting its sensitivity and other acoustic performance
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
[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0018] Such as Figure 1-4 As shown, a sound-generating device 10 includes a frame 1 , a vibration system 2 and a magnetic circuit system 3 accommodated in the frame 1 . The vibration system 2 includes a diaphragm 21 fixed on the basin frame 1 and a voice coil 22 driving the diaphragm 21 to vibrate. The magnetic circuit system 3 includes a magnetic bowl 31 and a magnetic steel 32 attached to the magnetic bowl 31 . Specifically, the magnetic bowl 31 includes a bottom wall 311, and the magnetic steel 32 includes a main magnetic steel 321 attached to the bottom wall 311 and an annular auxiliary magnetic steel 322 arranged around the main magnetic steel 321. The auxiliary magnetic steel 322 is sleeved on the A magnetic gap (not labeled) is formed on the main magnetic steel 321 and the main magnetic steel 321 , and the voice coil 22 is suspended in the mag...
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 invention provides a sound production device which comprises a basin stand, a magnetic bowl contained in the basin stand, magnetic steel attached onto the magnetic bowl and a vibration diaphragm fixed on the basin stand. The magnetic bowl comprises a bottom wall. The magnetic steel comprises main magnetic steel attached to the bottom wall and auxiliary magnetic steel surrounding the main magnetic steel. The basin stand, the magnetic bowl and the vibration diaphragm together enclose an inner cavity. The basin stand further comprises a sound production portion arranged at one end on the basin stand far away from the vibration diaphragm, and the sound production portion is connected with the inner cavity. A plurality of notch portions are arranged on the auxiliary magnetic steel, at least one notch portion is directly connected with the sound production portion, and sound waves generated by vibration of the vibration diaphragm can be emitted out from the sound production portion through the notch portions. Compared with the prior art, the sound production device has good sensitivity and excellent acoustic performance.
Description
【Technical field】 [0001] The invention relates to a sounding device, in particular to a sounding device used in the field of portable communication devices. 【Background technique】 [0002] With the rapid development of wireless communication, there are more and more mobile phones around the world. People's requirements for mobile phones are not limited to basic calls, but also put forward more requirements for the appearance and voice quality of traditional mobile phones. The sound generating device used in mobile phones has become one of the most important components. [0003] Traditional mobile phones such as the sound-generating devices of mobile phones, such as loudspeakers, receivers, etc., are arranged on the top of the mobile phone, that is, on the top of the display screen, and a sound hole is set at the top position, and the sound passes through the sound hole. This design not only increases the length of the mobile phone due to the placement of the loudspeaker, bu...
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): H04R13/00
Inventor 贺晶
Owner AAC ACOUSTIC TECH (SHENZHEN) CO LTD