Patent Application
20150296304
The disclosure described herein relates generally to electronic devices, and more particularly, to a portable electroacoustic device.
With the development of technologies, the portable electronic devices, like laptop, cellphone and tablet, become a necessity of people's everyday life. People are not only content with the communication function of these electronic devices, but also request the electronic devices are more entertaining and the appearances thereof are more fashionable.
The sound effect is an important criteria of the entertainment function of the electronic devices. Consequently, people have been always involved in improving the performance of the electroacoustic devices in those portable electronic devices. A related electroacoustic device typically includes a frame, a magnetic unit in the frame, and a vibrating unit positioned on the frame. The electroacoustic device usually cannot be made into a small size because of the frame, which becomes a barrier to the development of small form portable electronic devices.
Therefore, an improved portable electroacoustic device is provided in the present disclosure to solve the problem mentioned above.
Many aspects of the embodiment can be better understood with reference to the drawing mentioned above. The components in the drawing are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawing, like reference numerals designate corresponding parts throughout the several views.
Reference will now be made to describe the exemplary embodiment of the present invention in detail.
Referring to
The surface of the vibrating plate 211 far away from the magnetic circuit system 22 engages with the coupling part 214. The coupling part 214 is elastic, which can reduce the resonance frequency and improve the low frequency sound performance of the portable electroacoustic device. The coupling part 214 can be made from soft silica gel or foam. Furthermore, compared with the vibrating plate 211 directly engaged with the desk, the vibrating plate 211 engaged with the desk via the coupling part 214 makes the transmission of the vibration of the vibrating plate 211 more effective, reduces the energy losses during the transmission, and improves the low frequency acoustic performance of the portable electroacoustic device.
In this embodiment, the fixing part 4 is a printed circuit board (PCB), and the magnetic circuit system 22 is fixed on the PCB board. Compared with the related electroacoustic device, the frame can be omitted. The vibrating system 21 and the magnetic circuit system 22 respectively integrated with the shell 1 and the PCB board reduces the thickness of the portable electroacoustic device. The portable electroacoustic device of the present invention reduces the cost and installation space, and the structure of the portable electronic device is simplified.
In this embodiment, the lower plate 11 has several positioning columns 111 extending from the lower plate 11 towards the PCB board, the positioning columns 111 are respectively received in the positioning holes 41 in the PCB board for integrating the magnetic circuit system 22 with the vibrating system 21 firmly. As an alternative embodiment, the lower plate can also be engaged with the fixing part by screws. The portable electroacoustic device may be a cell phone, a laptop computer and so on.
While the present disclosure has been described with reference to the specific embodiment, the description of the disclosure is illustrative and is not to be construed as limiting the disclosure. Various of modifications to the present disclosure can be made to the exemplary embodiment by those skilled in the art without departing from the true spirit and scope of the disclosure as defined by the appended claims.
