Patent Publication Number: US-10779087-B2

Title: Vibration diaphragm

Description:
FIELD OF THE PRESENT DISCLOSURE 
     The present disclosure relates to electro-acoustic transducers, more particularly to a vibration diaphragm for radiating audible sounds. 
     DESCRIPTION OF RELATED ART 
     With the rapid development of portable devices like mobile phone etc, people&#39;s requirement to the performance of the product is becoming stronger and stronger, and there is a vibration mode of music belt for the music appreciation of the mobile phone, in order to strengthen the entertaining effect, thus, the development of the sounding instrument is accelerating accordingly. 
     The sounding instrument with relevant technology comprises a frame, a vibration diaphragm supported on the frame and a voice coil driving the vibration of the vibration diaphragm. The vibration diaphragm comprises a dome and a suspension extending along the dome, and the voice coil is fixed on the suspension. 
     However, in the vibration diaphragm with relevant technologies, the traditional vibration diaphragm comprises the central dome part and the suspension part encircling the dome part, and the suspension part is a structure of a single pattern. However, due to its insufficient strength and even lower strength at the corner of the suspension part, such vibration diaphragms tend to collapse. 
     Therefore it is necessary to provide an improved vibration diaphragm for overcoming the above-mentioned disadvantages. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Many aspects of the exemplary embodiment can be better understood with reference to the following drawing. 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. 
         FIG. 1  is an illustrative isometric view of a vibration diaphragm in accordance with an exemplary embodiment of the present disclosure. 
         FIG. 2  is an enlarged view of Part A of the vibration diaphragm in  FIG. 1 . 
         FIG. 3  is a front view of the vibration diaphragm in  FIG. 1 . 
     
    
    
     DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENT 
     The present disclosure will hereinafter be described in detail with reference to an 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 embodiment. It should be understood the specific embodiment described hereby is only to explain the disclosure, not intended to limit the disclosure. 
     As shown in  FIG. 1 ,  FIG. 2  and  FIG. 3 , a vibration diaphragm  100  is disclosed, in accordance with an exemplary embodiment of the present disclosure. The vibration diaphragm  100  is mainly applied in the sound generating device of electronic equipment. The sound generating device typically comprises a magnetic circuit system and a vibration system, wherein the magnetic circuit system comprises a yoke and a magnet accommodated in the yoke, and there is a magnetic gap between the yoke and the magnet; and the vibration system comprises a voice coil suspended in the magnetic gap and the vibration diaphragm  100  which is connected with the voice coil and driven by the same to vibrate. 
     The vibration diaphragm  100  comprises a central dome part  110  and a suspension part  120  surrounding the dome part  110 , wherein the suspension part  120  has an annular, protruding part  121  and a fixation part  122  extending outwards from the annular, protruding part  121 . That is to say, the annular, protruding part  121  covers the central dome part  110 . 
     The annular, protruding part  121  is provided with a number of first reinforcing parts  121   a  and a number of second reinforcing parts  121   b , wherein each second reinforcing part  121   b  is provided as surrounding an end of the first reinforcing part  121   a.    
     In the vibration diaphragm  100 , the annular, protruding part  121  is provided with a number of first reinforcing parts  121   a  and a number of second reinforcing parts  121   b , and each second reinforcing part  121   b  surrounds an end of the first reinforcing part  121   a , which significantly improves the strength of the vibration diaphragm  100 , reduces the vibration diaphragm collapsing, prolongs the life of the vibration diaphragm and allows the sounding device with the vibration diaphragm  100  to have an excellent sound generating performance. 
     It should be noted that no limitation is made to the structures of the first reinforcing parts  121   a  and the second reinforcing parts  121   b , for example, their protruding direction may be the same as that of the annular, protruding part  121  or opposite to that of the annular, protruding part  121 ; no limitation is made herein. 
     In order to further improve the strength of the vibration diaphragm  100 , both the first reinforcing parts  121   a  and the second reinforcing parts  121   b  are located at the corner  121   c  of the annular, protruding part  121 , and the first reinforcing parts  121   a  extend from the outside of the corner  121   c  to the inside of the corner  121   c.    
     In the vibration diaphragm  100  of the structure according to the embodiment, the provision of the first reinforcing parts  121   a  and the second reinforcing parts  121   b  at the corner  121   c  of the annular, protruding part  121  can effectively improve the strength of the vibration diaphragm  100  at the corner  121   c  and reduce the vibration diaphragm collapsing. 
     In order to further improve the strength of the vibration diaphragm  100  and reduce the vibration diaphragm collapsing, the second reinforcing part  121   b  may surround the end of the first reinforcing part  121   a  located outside of the corner  121   c . Of course, the second reinforcing part  121   b  may also surround the other end of the first reinforcing part  121   a , but preferably surrounds the end of the first reinforcing part  121   a  located outside of the corner  121   c , which can effectively improve the strength of the vibration diaphragm and reduce the vibration diaphragm collapsing. 
     As one embodiment of the second reinforcing part  121   b , the second reinforcing part  121   b  comprises a first extension part  121   b   1 , a second extension part  121   b   2  and a bent part  121   b   3  connecting the first extension part  121   b   1  and the second extension part  121   b   2 . The bent part  121   b   3  surrounds the end of the first reinforcing part  121   a  located outside of the corner  121   c , and the first extension part  121   b   1  and the second extension part  121   b   2  are located on one side of the end respectively. 
     In the vibration diaphragm  100  of the structure according to the embodiment, second reinforcing parts  121   b  of the structure described above are provided. The second reinforcing part  121   b  comprises not only the bent part  121   b   3  surrounding the first reinforcing part  121   a , but also the first extension part  121   b   1  and the second extension part  121   b   2  located on one side of the first reinforcing part  121   a  respectively, which further improve the strength of the vibration diaphragm at the corner  121   c.    
     Specifically, the protruding direction of the first reinforcing part  121   a  and the second reinforcing part  121   b  is the same as that of the annular, protruding part  121 . 
     Of course, as another structure of the first reinforcing parts  121   a  and the second reinforcing parts  121   b , the protruding direction of the first reinforcing parts  121   a  and the second reinforcing parts  121   b  is opposite to that of the annular, protruding part  121 . 
     Besides, the protruding direction of one of the first reinforcing parts  121   a  and the second reinforcing parts  121   b  is the same as that of the annular, protruding part  121 , and the protruding direction of the other one is opposite to that of the annular, protruding part. 
     According to the configuration of the vibration diaphragm described above, the strength of the vibration diaphragm at the corners  121   c  can be effectively improved, and the vibration diaphragm collapsing is reduced. Taking the convenience of fabricating processes into consideration, the first reinforcing parts  121   a  and the second reinforcing parts  121   b  of the second structure are preferable, i.e. the protruding direction of both reinforcing parts is opposite to that of the annular, protruding part  121 . 
     In order to further improve the strength of the vibration diaphragm, the corners  121   c  of the annular, protruding part  121  are rounded off. 
     A sounding device is provided according to the second aspect of the present utility model (not shown in figures). The sounding device comprises a magnetic circuit system (not shown in figures), a vibration system (not shown in figures) and a frame accommodating the magnetic circuit system and the vibration system (not shown in figures), wherein the vibration system includes the vibration diaphragm  100  described above. 
     The sounding device of the structure according to the embodiment includes the vibration diaphragm  100  described above. The vibration diaphragm  100  of such a structure has improved strength and does not collapse easily, so the life of the sounding device is prolonged and its sound generating effect is improved. 
     An electronic equipment (not shown in figures) is provided according to the third aspect of the present utility model, and the electronic equipment comprises the sounding device described above. 
     The electronic equipment of the structure according to the embodiment has the sounding device described above which has the vibration diaphragm  100  described above, the vibration effect of the electronic equipment is effectively improved and the life of the product is prolonged. 
     It should be noted that the electronic equipment may comprise electronic products such as cell phones, tablets. 
     It is to be understood, however, that even though numerous characteristics and advantages of the present exemplary embodiment have been set forth in the foregoing description, together with details of the structures and functions of the embodiment, 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 invention to the full extent indicated by the broad general meaning of the terms where the appended claims are expressed.