CN210327899U - Acoustic device and electronic equipment - Google Patents
Acoustic device and electronic equipment Download PDFInfo
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- CN210327899U CN210327899U CN201921820629.5U CN201921820629U CN210327899U CN 210327899 U CN210327899 U CN 210327899U CN 201921820629 U CN201921820629 U CN 201921820629U CN 210327899 U CN210327899 U CN 210327899U
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Abstract
The utility model provides an acoustics device and electronic equipment, this acoustics device includes: the magnetic vibrating diaphragm comprises a magnetic part and a vibrating diaphragm folding ring, and the vibrating diaphragm folding ring is connected to the edge of the magnetic part; the coil and the magnetic part are oppositely arranged, a vibration space is formed between the coil and the magnetic part, and the axial direction of the coil is parallel to the magnetic pole distribution direction of the magnetic part; under the condition that the coil is electrified, the magnetic vibrating diaphragm and the coil are interacted, and the magnetic vibrating diaphragm vibrates in the vibration space. The acoustic device has the advantages of low assembly requirement, difficulty in noise problem, simpler processing technology, better compatibility, convenience in structural stacking of electronic equipment, capability of increasing the contact area of the magnetic diaphragm and air as much as possible in a limited space so as to improve the vibration performance of the magnetic diaphragm, small negative influence on transmission of radio frequency signals and small thickness.
Description
Technical Field
The embodiment of the utility model provides a relate to acoustics technical field, especially relate to an acoustics device and electronic equipment.
Background
At present, electronic devices are usually provided with acoustic devices such as speakers and receivers, so that the electronic devices have the capability of interconversion between acoustic signals and electrical signals. The loudspeaker is taken as an example, the traditional loudspeaker mainly comprises a winding voice coil, a diaphragm and a magnetic circuit system, all parts can be fixed together in a bonding mode, and the winding voice coil and the magnetic circuit system act mutually to realize the vibration of the diaphragm so as to make sound.
The above speaker has the following drawbacks:
a. the requirement on the concentricity of assembly is high, and once the concentricity does not meet the requirement, the problem that the winding voice coil collides with a magnetic circuit system and then generates noise easily occurs;
b. due to the process limitation of the winding voice coil, the overall shape of the loudspeaker has great limitation, and the structural stacking of electronic equipment is not facilitated;
c. because the magnetic circuit system comprises a magnet with a large size and a metal part, the loudspeaker has a serious magnetic leakage problem, and meanwhile, the transmission of radio frequency signals is negatively affected, so that the reliability of electronic equipment is reduced;
d. the coil voice coil is inserted into the magnetic gap, resulting in a large overall thickness of the speaker, which is not favorable for structural stacking of electronic devices.
Of course, the above-described problems also exist in acoustic devices such as receivers.
SUMMERY OF THE UTILITY MODEL
The utility model provides an acoustics device and electronic equipment to solve the easy noise that sends that acoustics device exists, there is great limitation, magnetic leakage problem serious, has the great problem of negative impact and whole thickness to the transmission of radio frequency signal in whole shape.
In order to solve the above problem, the utility model adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides an acoustic device, including:
the magnetic vibrating diaphragm comprises a magnetic part and a vibrating diaphragm folding ring, and the vibrating diaphragm folding ring is connected to the edge of the magnetic part;
the coil and the magnetic part are oppositely arranged, a vibration space is formed between the coil and the magnetic part, and the axial direction of the coil is parallel to the magnetic pole distribution direction of the magnetic part;
under the condition that the coil is electrified, the magnetic vibrating diaphragm and the coil are interacted, and the magnetic vibrating diaphragm vibrates in the vibration space.
In a second aspect, the embodiments of the present invention further provide an electronic device, including the above acoustic device.
The embodiment of the utility model provides an in, acoustic device includes magnetic diaphragm and coil, and the magnetism portion and the coil of magnetic diaphragm set up relatively, and form vibration space between the two, when the coil circular telegram, produce the interact power between magnetic diaphragm and the coil to make magnetic diaphragm can vibrate, in order to realize acoustic device's acoustics function. The acoustic device has the following advantages: the acoustic device realizes the vibration of the magnetic vibrating diaphragm by utilizing the electromagnetic action, and the magnetic part and the coil do not need to be in direct contact, so that the magnetic part and the coil are not easy to collide, the relative positions of the magnetic part and the coil are more flexible, the assembly requirement of the acoustic device is reduced, and the noise problem is not easy to occur; the coil is of a flexible structure, so that the shape of the coil can be flexibly selected, the processing technology of the acoustic device is simpler, the overall shape of the acoustic device is more diversified, the compatibility of the acoustic device is improved, and meanwhile, the structural stacking of electronic equipment is facilitated; the structure of the magnetic diaphragm can also be flexibly designed, so that the contact area of the magnetic diaphragm and air is increased as much as possible in a limited space, and the vibration performance of the magnetic diaphragm is improved; compared with the structure mentioned in the background technology, the acoustic device omits a magnet and a metal part with larger size, thereby alleviating the magnetic leakage problem of the acoustic device, and simultaneously reducing the negative influence on the transmission of radio frequency signals, thereby improving the reliability of electronic equipment; the dimensions of the coil and the magnetic portion can be made smaller, thereby reducing the thickness of the acoustic device to facilitate structural stacking of the electronic device.
Drawings
Fig. 1 to 5 are schematic structural diagrams of acoustic devices according to different embodiments of the present invention, respectively;
fig. 6 to fig. 8 are schematic structural diagrams of magnetic diaphragms according to different embodiments of the present invention.
Description of reference numerals:
100-magnetic diaphragm, 110-magnetic part, 120-diaphragm folding ring, 200-coil, 300-support frame, 310-air hole, 320-first support part, 330-second support part, 331-accommodating groove and 400-iron core.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the present invention provides an acoustic device, which may specifically be a speaker, a receiver, etc., and may be applied in an electronic device. The acoustic device may specifically include a magnetic diaphragm 100 and a coil 200.
The axial direction of the coil 200 is parallel to the magnetic pole distribution direction of the magnetic part 110, and when the magnetic part 110 is in a planar structure, both the axial direction of the coil 200 and the magnetic pole distribution direction of the magnetic part 110 can be perpendicular to the plane of the magnetic part 110. The axial direction of the coil 200 refers to a direction in which a straight line is surrounded when the coil 200 is wound; the magnetic pole distribution direction of the magnetic part 110 refers to a direction in which the N pole of the magnetic part 110 extends toward the S pole. When the coil 200 is energized, the coil 200 is magnetized, and a magnetic field is generated around the coil 200, and at this time, the magnetic diaphragm 100 interacts with the coil 200, that is, the magnetic field of the magnetic diaphragm 100 itself interacts with the magnetic field generated around the coil 200, so that the magnetic diaphragm 100 can vibrate in the aforementioned vibration space. Specifically, when the direction of the magnetic field of the magnetic diaphragm 100 is the same as the direction of the magnetic field generated around the coil 200, a magnetic repulsion force is generated between the magnetic diaphragm 100 and the coil 200, and at this time, the magnetic diaphragm 100 is far away from the coil 200; when the magnetic field of the magnetic diaphragm 100 itself is opposite to the direction of the magnetic field generated around the coil 200, a magnetic attraction force is generated between the magnetic diaphragm 100 and the coil 200, and at this time, the magnetic diaphragm 100 is close to the coil 200. Therefore, when an alternating current is applied to the coil 200, a magnetic attraction force and a magnetic repulsion force are alternately generated between the magnetic diaphragm 100 and the coil 200, so that the magnetic diaphragm 100 vibrates to realize the acoustic function of the acoustic device.
The above-described acoustic device has the following advantages: the acoustic device utilizes the electromagnetic action to realize the vibration of the magnetic diaphragm 100, and the magnetic part 110 and the coil 200 do not need to be in direct contact, so that the magnetic part 110 and the coil 200 are not easy to collide, the relative positions of the magnetic part 110 and the coil 200 are more flexible, the assembly requirement of the acoustic device is reduced, and the noise problem is not easy to occur; the coil 200 is a flexible structure, so the shape of the coil can be flexibly selected, the processing technology of the acoustic device is simpler, the overall shape of the coil is more diversified, the compatibility of the acoustic device is improved, and meanwhile, the structural stacking of electronic equipment is facilitated; the structure of the magnetic diaphragm 100 may also be flexibly designed, for example, a circular structure shown in fig. 6, a rectangular structure shown in fig. 7, or even a special-shaped structure, for example, the structure shown in fig. 8, may be adopted, and by flexibly designing the structure of the magnetic diaphragm 100, the contact area between the magnetic diaphragm 100 and the air may be increased as much as possible in a limited space, so as to improve the vibration performance of the magnetic diaphragm 100; compared with the structure mentioned in the background technology, the acoustic device omits a magnet and a metal part with larger size, thereby alleviating the magnetic leakage problem of the acoustic device, and simultaneously reducing the negative influence on the transmission of radio frequency signals, thereby improving the reliability of electronic equipment; the dimensions of the coil 200 and the magnetic part 110 may be set smaller, thereby reducing the thickness of the acoustic device to facilitate structural stacking of the electronic device.
In an alternative embodiment, as shown in fig. 4 and 5, the surface on which the coil 200 is located may be a first curved surface, and the surface on which the magnetic part 110 is located may be a second curved surface, and the second curved surface is matched with the first curved surface. In other words, the curvature change rule of the coil 200 is substantially consistent with the curvature change rule of the magnetic part 110, so that the distance between the two can be kept stable, and the acting force between the two can be uniformly distributed, thereby optimizing the acoustic performance of the acoustic device. The coil 200 and the magnetic part 110 are curved, so that the distribution of the components in the electronic equipment or the components of other equipment can be better adapted, and the acoustic devices with larger size can be arranged in a limited space, so as to optimize the acoustic performance of the acoustic devices.
As shown in fig. 2, in an alternative embodiment, the acoustic device further includes a support frame 300, the coil 200 is disposed between the support frame 300 and the magnetic diaphragm 100, and the diaphragm edge 120 is connected to the support frame 300. In this embodiment, the magnetic diaphragm 100 and the coil 200 are mounted on the supporting frame 300, so that the magnetic diaphragm 100, the coil 200 and the supporting frame 300 can be assembled into a whole, thereby facilitating the subsequent assembly operation of the whole acoustic device, and simultaneously, the relative position accuracy of the magnetic diaphragm 100 and the coil 200 can be higher, so as to improve the acoustic performance of the acoustic device.
In order to improve the supporting effect of the supporting frame 300 on the magnetic diaphragm 100 and the coil 200, the supporting frame 300 may be further configured to be an annular structure, where the supporting frame 300 and the magnetic diaphragm 100 form an inner cavity, and the inner cavity is a substantially closed inner cavity. Since the magnetic diaphragm 100 is a part of the boundary of the inner cavity, and the magnetic diaphragm 100 needs to vibrate, if the internal air pressure of the inner cavity cannot be dynamically changed, the vibration of the magnetic diaphragm 100 will be suppressed, resulting in poor sound effect of the acoustic device, or even failure in normal sound production. To solve this problem, the supporting frame 300 may be provided with a vent 310, and the vent 310 is connected to the inner cavity. Thus, the air holes 310 can communicate the inner cavity with the external environment, so that the air pressure in the inner cavity can be dynamically changed to adapt to the vibration of the magnetic diaphragm 100, thereby better ensuring the sound production performance of the acoustic device.
Optionally, the air holes 310 may be circular holes, rectangular holes, elliptical holes, etc., and the number of the air holes may be one or more, which is not limited by the embodiment of the present invention.
The specific structure of the supporting frame 300 can be flexibly selected according to the structure of the magnetic diaphragm 100 and the coil 200, and optionally, the supporting frame 300 can include a first supporting portion 320 and a second supporting portion 330, the first supporting portion 320 is provided with an air hole 310, the diaphragm folding ring 120 and the second supporting portion 330 are respectively connected to two sides of the first supporting portion 320, the second supporting portion 330 has a receiving groove 331 recessed relative to the first supporting portion 320, and the coil 200 is disposed in the receiving groove 331. At this time, the bottom surface of the receiving groove 331 can support the coil 200, and the side surface of the receiving groove 331 can assist in limiting the position of the coil 200, so that the relative position of the coil 200 and the magnetic diaphragm 100 is more accurate, and the acting force between the two is more uniform and stable, thereby achieving the effect of improving the acoustic performance of the acoustic device.
As shown in fig. 3, in order to enhance the magnetization effect of the coil 200, the acoustic device further includes a core 400, and the core 400 is disposed inside the coil 200. When the coil 200 is energized and magnetized, the iron core 400 is magnetized by the magnetic field generated by the coil 200, so as to generate a magnetic field, and at this time, the magnetic field generated by the coil 200 and the magnetic field generated by the iron core 400 are superimposed, so that the finally formed magnetic field is stronger, and the magnetic part 110 is driven to vibrate more strongly.
In an alternative embodiment, as shown in fig. 1 to 4, the number of the coils 200 may be one, and correspondingly, the number of the magnetic parts 110 may also be one. In another embodiment, as shown in fig. 5, the number of the coils 200 may be at least two, the at least two coils 200 are arranged at intervals, correspondingly, the number of the magnetic parts 110 is at least two, the at least two magnetic parts 110 are connected, and each magnetic part 110 is provided with one coil 200. In the latter embodiment, the shape of the single coil 200 and the magnetic part 110 can be flexibly selected, and the shape of the structure formed by combining a plurality of coils 200 and magnetic parts 110 can also be flexibly designed, so that the structure of the whole acoustic device can be better adapted to the layout form of other parts in the electronic equipment, and the stacking of the parts in the electronic equipment is facilitated.
In the embodiment of the present invention, optionally, the magnetic portion 110 may be configured as a rigid structure, and the magnetic portion 110 may also be configured as a flexible structure. When the magnetic part 110 is a rigid structure, the magnetic part 110 has a higher structural strength and a stronger ability to withstand an external force. When the magnetic part 110 is a flexible structure, the effect of the magnetic part 110 when vibrating to generate sound is better, so that the acoustic performance of the acoustic device is better. Specifically, magnetism portion 110 can adopt materials such as neodymium iron boron, ferrite to make, also can set to structures such as rubber soft magnetic sheet, and the embodiment of the utility model provides a do not limit to this.
In order to generate a larger acting force between the magnetic part 110 and the coil 200, the projection of the magnetic part 110 may cover the projection of the coil 200 in the vibration direction of the magnetic diaphragm 100, and the projection area of the magnetic part 110 is larger than the projection area of the coil 200. That is, the size of the magnetic part 110 is larger than that of the coil 200, so that the magnetic field generated after the coil 200 is powered on interacts with the magnetic field of the magnetic part 110 more sufficiently, and a larger force is formed between the magnetic part 110 and the coil 200, thereby driving the magnetic diaphragm 100 to vibrate more strongly.
The embodiment of the utility model provides a still provide an electronic equipment, it includes any one of the above-mentioned embodiment the acoustic device.
The embodiment of the utility model provides an electronic equipment can be for smart mobile phone, panel computer, electronic book reader or wearable equipment. Of course, the electronic device may also be other devices, and the embodiment of the present invention does not limit this.
The utility model discloses what the key description in the above embodiment is different between each embodiment, and different optimization characteristics are as long as not contradictory between each embodiment, all can make up and form more preferred embodiment, consider that the literary composition is succinct, then no longer describe here.
The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. An acoustic device, comprising:
the magnetic diaphragm (100), the magnetic diaphragm (100) comprises a magnetic part (110) and a diaphragm folding ring (120), and the diaphragm folding ring (120) is connected to the edge of the magnetic part (110);
the coil (200) is arranged opposite to the magnetic part (110), a vibration space is formed between the coil (200) and the magnetic part (110), and the axial direction of the coil (200) is parallel to the magnetic pole distribution direction of the magnetic part (110);
under the condition that the coil (200) is electrified, the magnetic diaphragm (100) interacts with the coil (200), and the magnetic diaphragm (100) vibrates in the vibration space.
2. The acoustic device according to claim 1, wherein the surface on which the coil (200) is located is a first curved surface, and the surface on which the magnetic part (110) is located is a second curved surface, the second curved surface being adapted to the first curved surface.
3. The acoustic device according to claim 1, further comprising a support frame (300), wherein the coil (200) is arranged between the support frame (300) and the magnetic diaphragm (100), and wherein the diaphragm edge (120) is connected to the support frame (300).
4. The acoustic device according to claim 3, wherein the support frame (300) is an annular structure, the support frame (300) and the magnetic diaphragm (100) form an inner cavity, the support frame (300) is provided with a vent (310), and the vent (310) is communicated with the inner cavity.
5. The acoustic device according to claim 4, wherein the support frame (300) includes a first support portion (320) and a second support portion (330), the vent hole (310) is opened in the first support portion (320), the diaphragm edge (120) and the second support portion (330) are respectively connected to both sides of the first support portion (320), and the second support portion (330) has a receiving groove (331) recessed with respect to the first support portion (320), the coil (200) being disposed in the receiving groove (331).
6. The acoustic device according to claim 1, further comprising a core (400), the core (400) being arranged within the coil (200).
7. The acoustic device according to claim 1, wherein the number of the coils (200) is at least two, at least two of the coils (200) are arranged at intervals, the number of the magnetic parts (110) is at least two, at least two of the magnetic parts (110) are connected, and each of the magnetic parts (110) is provided with one of the coils (200).
8. The acoustic device according to claim 1, wherein the magnetic part (110) is a rigid structure or the magnetic part (110) is a flexible structure.
9. The acoustic device according to claim 1, wherein, in the vibration direction of the magnetic diaphragm (100), the projection of the magnetic portion (110) covers the projection of the coil (200), and the projected area of the magnetic portion (110) is larger than the projected area of the coil (200).
10. An electronic device, characterized in that it comprises an acoustic device according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921820629.5U CN210327899U (en) | 2019-10-28 | 2019-10-28 | Acoustic device and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921820629.5U CN210327899U (en) | 2019-10-28 | 2019-10-28 | Acoustic device and electronic equipment |
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| CN210327899U true CN210327899U (en) | 2020-04-14 |
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| CN201921820629.5U Active CN210327899U (en) | 2019-10-28 | 2019-10-28 | Acoustic device and electronic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114173260A (en) * | 2021-12-08 | 2022-03-11 | 江西台德智慧科技有限公司 | Intelligent installation method and device for batch acoustic equipment |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114173260A (en) * | 2021-12-08 | 2022-03-11 | 江西台德智慧科技有限公司 | Intelligent installation method and device for batch acoustic equipment |
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