Patent Application
20200059731
The present disclosure relates to electro-acoustic conversions, and more particularly to a multi functional speaker applied in a portable electronic product.
A speaker in the related art includes a frame having a housing space, a vibration system, a magnetic circuit system and an elastic member. The magnetic circuit system is suspended in the housing space of the frame by the elastic member.
The magnetic circuit system includes a yoke, a primary magnet and a secondary magnet received in the yoke. The primary magnet and the secondary magnet form a magnet assembly accommodated in the yoke, and a magnetic gap is formed between the magnetic assembly and the yoke. The vibration system includes a diaphragm and a voice coil. One end of the voice coil is suspending in the magnetic gap, and the other end of the voice coil fixed to the diaphragm. The elastic member includes an elastic arm and a fixed arm that are connected to each other, the fixed arm is fixed to the frame and the secondary magnet.
In the related art, the structure of the speaker provides the fixed arm fixed to the secondary magnet, and a length of the fixed arm is small, that is, the fixed arm is shorter. Therefore, the structure of the speaker in the related art results a larger f0 of the multi-function speaker when the speaker operates at low frequencies, thereby limiting the performance of the multi-function speaker.
Therefore, it is desired to provide a multi-function speaker to overcome the above problem.
Various aspects of an exemplary embodiment may be better understood with reference to the following drawings. 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 drawings, like reference numerals designate corresponding parts throughout the drawings.
The present disclosure will hereinafter be described in detail with reference to several exemplary embodiments. To make the technical problems to be solved, technical solutions and beneficial effects of the present disclosure more apparent, the present disclosure is described in further detail together with the figure and the embodiments. It should be understood the specific embodiments described hereby is only to explain the disclosure, not intended to limit the disclosure.
Please also refer to
The frame 1 includes an upper shell 11 fixedly connected to the vibration system 3 and a lower shell 12 fixedly engaged with the upper shell 11 to form the housing space correspondingly. The upper shell 11 includes two first side walls 13 oppositely disposed to each other and two second side walls 14 oppositely disposed to each other. The second side walls 14 are configured to connect the first side walls 13 respectively.
The magnetic circuit system 2 includes a lower plate 21, a primary magnet 22 disposed on the lower plate 21, both secondary magnets 23 disposed on both opposite sides of the primary magnet 21 in a direction parallel to the second side wall 14, an upper plate 24 disposed on the secondary magnet 23, and a pole core 25 disposed on the primary magnet 22. A height of the secondary magnet 23 is smaller than that of the primary magnet 22 in the vibration direction. The upper plate 24 includes a main body portion 241 which is disposed on the secondary magnet 23 and both protrusions 242 which protrude from both ends of the main body portion 241 in vibration direction and distal from the secondary magnet 23. Projection of the protrusion 242 in a direction perpendicular to vibration direction and perpendicular to the second side wall 14 completely fall within the primary magnet 22.
The vibration system 3 includes a diaphragm 31 configured to vibrate to produce sound, and a voice coil 32 configured to drive the diaphragm 31 to vibrate. In this present embodiment, the diaphragm 31 is a two-piece diaphragm including a dome 311 at a middle position and a suspension 312 surrounding the dome 311. In another embodiment, the diaphragm 31 may also be an integral structure.
As illustrated in
Referring to
In this embodiment, the first elastic arm 4321 and the second elastic arm 4322 are parallel to the second side wall 14, and the first connecting arm 4323 is curved. In other embodiments, the first elastic arm 4321 and the second elastic arm 4322 may also be unparallel to each other.
As illustrated in
Compared with the related art, on one hand, the elastic body of the multi-function speaker provided by the present disclosure has a long elastic arm, and can effectively reduce f0 when the elastic body drives the low-frequency vibration of the vibration system. And on the other hand, the avoidance portion of the lower plate is disposed to accommodating the elastic arm for providing sufficient vibration space for the elastic body and enhances the low-frequency vibration performance of the multi-function speaker.
It is to be understood, however, that even though numerous characteristics and advantages of the present embodiments have been set forth in the foregoing description, together with details of the structures and functions of the embodiments, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201821335401.2 | Aug 2018 | CN | national |
