This application claims the priority benefit of Chinese Patent Application Ser. No. 201720722797.5 filed on Jun. 20, 2017, the entire content of which is incorporated herein by reference.
The present disclosure relates to electro-acoustic transducers, more particularly to a vibration membrane of a speaker.
With the rapid development of the electronic information technology, an increasing number of sounding devices are applied in all kinds of electronic products, especially in widely used mobile communication equipment. People not only pay attention to the miniaturized size and multi-function, but also expect such equipment have high-quality and distortion-free voice. As the vibration membrane is the core component of the sounding device, its design affects the behaviors of acoustic devices directly.
The traditional membrane 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 membranes tend to collapse.
Therefore it is necessary to provide an improved vibration membrane for overcoming the above-mentioned disadvantages.
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.
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
The vibration membrane 100 comprises a central dome part 110, a suspension part 120 surrounding the dome part 110 and a fixation part 122 extending outwards from the suspension part 120, where the suspension part 120 has an annular, protruding shape. Wherein the inside of the suspension part 120 refers to the side close to the dome part 110, and the outside of the suspension part 120 refers to the side away from the dome part 110.
The suspension part 120 comprises a pair of long-axis parts 123 parallel to a long axis of the vibration membrane, a pair of short-axis parts 124 parallel to a short axis of the vibration membrane, and a plurality of corner parts 125 connecting the long-axis parts 123 and the short-axis parts 124. The suspension part 120 is provided with a number of first reinforcing parts 121a and a number of second reinforcing parts 121b, the first reinforcing part 121a is located at the corner part 125, while the second reinforcing part 121b is located at the long-axis part 123 of the suspension part 120. The second reinforcing part 121b comprises a plurality of first master extension parts 121b1 and a plurality of first slave extension parts 121b2 crossing with the first master extension parts 121b1, which can effectively improve the strength of the vibration membrane 100. Especially when the suspension part of the vibration membrane 100 has a very long length along the long axis, the strength is significantly improved, and the membrane collapsing is reduced, accordingly, the life of the membrane is prolonged and the sound generating device with the membrane 100 has an excellent sound generating performance.
It should be noted that no limitation is made to the structures of the first reinforcing parts 121a and the second reinforcing parts 121b, for example, their structure may be a depression part sinking in the surface of the suspension part 120 or a protrusion part rising from the surface of the suspension part 120.
It should also be understood that the crossing of the first master extension part 121b1 and the first slave extension part 121b2 may be as follows: the first master extension part 121b1 and the first slave extension part 121b2 cross at a point from which both parts extend to two sides, i.e. to roughly form a X shape, or the first master extension part 121b1 and the first slave extension part 121b2 cross at a point from which the first master extension part 121b1 extends to two sides and the first slave extension part 121b2 extends to one side, i.e. to roughly form a Y shape, or the first master extension part 121b1 and the first slave extension part 121b2 cross at a point from which the first master extension part 121b1 and the first slave extension part 121b2 extend to one side, i.e. to roughly form a V shape. Of course, the first master extension part 121b1 and the first slave extension part 121b2 may be configured to have other shapes, etc.
The first reinforcing part 121a is located at the corner parts 125 of the suspension part 120, and the first reinforcing part 121a extends from the outside of the corner part 125 to the inside of the corner part 125.
In the vibration membrane 100 of the structure according to the embodiment, the provision of the first reinforcing parts 121a at the corner part 125 of the suspension part 120 can effectively improve the strength of the membrane 100 at the corner part 121c and reduce the membrane collapsing.
The first reinforcing parts 121a are alternately provided spaced apart at the corner parts 125, and the second reinforcing parts 121b are provided spaced apart along the extension direction of the long-axis parts 123.
In the membrane 100 of the structure according to the embodiment, the provision of the multiple first reinforcing parts 121a at the corner part 125 of the suspension part 120 and the provision of the multiple second reinforcing parts 121b provided spaced apart along the extension part of the long-axis part 123 can effectively improve the strength of the membrane 100 at the corner part 125 and the long-axis sides 123 as well as reduce the membrane collapsing.
The first reinforcing part 121a comprises second master extension parts 121a1 and second slave extension parts 121a2 alternately provided spaced apart, the second master extension parts 121a1 extend from the inside of the annular, protruding part 121 to the outside, and the second master extension parts 121a1 decrease progressively in turn in width from the inside of the annular, protruding part 121 to the outside; the second slave extension parts 121a2 extend from the outside of the annular, protruding part 121 to the inside, and the second slave extension parts 121a2 decrease progressively in turn in width from the outside of the annular, protruding part 121 to the inside.
In the vibration membrane 100 of the structure according to the embodiment, the first reinforcing part 121a comprises second master extension parts 121a1 and second slave extension parts 121a2 provided spaced apart, which can further effectively improve the strength of the membrane 100 at the corner 121c and reduce the membrane collapsing; besides, the membrane 100 of the structure can be also easily fabricated and requires less cost.
Specifically, the structure of both the first reinforcing parts 121a and the second reinforcing parts 121b is a depression part sinking in the surface of the suspension part 120.
Of course, another structure of both the first reinforcing parts 121a and the second reinforcing parts 121b may also be a protrusion part rising from the surface of the suspension part 120.
In the vibration membrane 100 of both structures described above, the strength of the membrane at the corner part 125 and the long-axis parts 123 can be effectively improved and the membrane collapsing is reduced. Taking the convenience of fabricating processes into consideration, the first reinforcing parts 121a and the second reinforcing parts 121b of the first structure are preferable, i.e. both the reinforcing parts are depression parts sinking in the surface of the suspension part 120.
In order to further improve the strength of the vibration membrane, the corner parts 125 of the suspension part 120 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 membrane 100 described above.
The sounding device of the structure according to the embodiment includes the membrane 100 described above. The membrane 100 of such a structure has improved strength and does not collapse easily, so the life of the sounding device is prolonged and its vibration 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 membrane 100 described above, the vibration effect of the electronic equipment is effectively improved and the life of the product is prolonged.
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.
Number | Date | Country | Kind |
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2017 2 0722797 U | Jun 2017 | CN | national |
Number | Name | Date | Kind |
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9668058 | Matsumura | May 2017 | B2 |
10499157 | Wu | Dec 2019 | B2 |
20160227324 | Cai | Aug 2016 | A1 |
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2227036 | Sep 2010 | EP |
2574124 | Nov 2019 | GB |
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WO-2007119709 | Oct 2007 | WO |
WO-2009107192 | Sep 2009 | WO |
WO-2018035720 | Mar 2018 | WO |
Number | Date | Country | |
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20180367915 A1 | Dec 2018 | US |