CN211089948U - Exciter and electronic product - Google Patents
Exciter and electronic product Download PDFInfo
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- CN211089948U CN211089948U CN201922457753.6U CN201922457753U CN211089948U CN 211089948 U CN211089948 U CN 211089948U CN 201922457753 U CN201922457753 U CN 201922457753U CN 211089948 U CN211089948 U CN 211089948U
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Abstract
The utility model provides an exciter and electronic product. The exciter includes: a magnetic circuit assembly including a first housing and a magnet coupled to the first housing; a coil assembly including a second housing and a coil disposed within a magnetic field formed by the magnet; the coil is connected to the second shell; the coil assembly is configured to be capable of generating vibration relative to the magnetic circuit assembly; the coil is formed by winding a wire, and the cross section of the wire is polygonal. The utility model discloses a set the cross sectional shape of coil wire to the polygon, can reduce the space between the wire when the coil coiling, increase the number of turns of coil in the same space, prolong the effective length of coil, and then increase the drive power that the coil received.
Description
Technical Field
The utility model relates to an acoustics technical field, more specifically, the utility model relates to an exciter and electronic product.
Background
Currently, the direct-drive screen sound-emitting exciter is widely applied, and can enable electronic equipment to generate stereo effect, so that users can obtain excellent use experience. Thus, consumers have a high acceptance of such products.
Currently, the common exciter comprises an integrated exciter and a split exciter. No matter the split type or the integrated type, the coil adopted by the exciter is formed by winding an enameled wire with a cylindrical shape. The coil wound by the cylindrical enameled wire has the advantages that the coil is in a tangent arrangement mode between turns due to the shape characteristics of the enameled wire, and the gap between every two adjacent turns of the enameled wire is large. In this case, the number of turns of the coil is small in the same winding space, resulting in a short effective length of the coil. So that the driving force of the coil in the magnetic field is small.
In view of the above, there is a need for an improved coil of an existing exciter to solve the problem of small driving force applied to the coil.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an exciter, solve the less problem of drive power that the coil received.
Another object of the present invention is to provide an electronic product, which includes the above-mentioned exciter.
A magnetic circuit assembly including a first housing and a magnet coupled to the first housing;
a coil assembly including a second housing and a coil disposed within a magnetic field formed by the magnet; the coil is connected to the second shell;
the coil assembly is configured to be capable of generating vibration relative to the magnetic circuit assembly;
the coil is formed by winding a wire, and the cross section of the wire is polygonal.
Optionally, the cross-sectional shape of the wire is rectangular.
Optionally, the cross-sectional shape of the wire is square.
Alternatively, the magnets are arranged in pairs, the two magnets of each pair having the same direction of magnetization.
Optionally, two pairs of magnets are arranged along the vibration direction of the coil assembly, and the magnetizing directions of the two pairs of magnets are opposite to each other to form a magnetic loop.
Optionally, in the vibration direction of the coil assembly, the distance between the two pairs of the magnets is smaller than or equal to the height of the winding hole of the coil in the vibration direction.
Optionally, a spring plate is arranged on the second shell, and the magnet is connected to the spring plate.
Optionally, the elastic piece and the second shell are integrally formed.
Optionally, two adjacent wires in the coil are connected by an adhesive.
An electronic product, comprising the exciter;
a fixing member;
a vibrating member configured to be capable of vibrating with respect to the fixing member;
one of the first case and the second case is connected to the vibrating member, and the other of the first case and the second case is connected to the fixing member.
Technical scheme's beneficial effect lies in: the cross section of the coil wire is set to be polygonal, so that gaps among the wires can be reduced when the coil is wound, the number of turns of the coil is increased in the same space, the effective length of the coil is prolonged, and the driving force borne by the coil is increased.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is an exploded view of an exciter according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of an exciter according to an embodiment of the present invention;
fig. 3 is an exploded view of an exciter according to an embodiment of the present invention;
fig. 4 is a cross-sectional view of an actuator according to an embodiment of the present invention;
fig. 5 is a schematic view of a coil and its cross-section according to an embodiment of the invention;
the figures are labeled as follows: 10 a first housing; 20 magnets; 201 a first pair of magnets; 202 a second magnet pair; 30 coils; 301 a conductive line; 40 a second housing; 401 a fixing part; 402 spring plate.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
At present, the coil adopted by the exciter is wound by an enameled wire with a cylindrical shape. The coil wound by the cylindrical enameled wire has the advantages that the coil is in a tangent arrangement mode between turns due to the shape characteristics of the enameled wire, and the gap between every two adjacent turns of the enameled wire is large. In this case, the number of turns of the coil is small in the same winding space, resulting in a short effective length of the coil. So that the driving force of the coil in the magnetic field is small. Therefore, there is a need for an improved coil of an existing exciter to solve the problem of small driving force applied to the coil.
The utility model provides an exciter, include: a magnetic circuit assembly including a first housing and a magnet coupled to the first housing; a coil assembly including a second housing and a coil disposed within a magnetic field formed by the magnet; the coil is connected to the second shell; the coil assembly is configured to be capable of generating vibration relative to the magnetic circuit assembly; the coil is formed by winding a wire, and the cross section of the wire is polygonal.
As an embodiment of the present invention, as shown in fig. 1 to 4, the exciter includes a magnetic circuit assembly and a coil assembly. Wherein the magnetic circuit assembly comprises a first housing 10 and a magnet 20. The coil assembly includes a coil 30 and a second housing 40. Optionally, the first housing is a box-shaped structure, and the first housing is fastened to the second housing to form a cavity for accommodating various components of the actuator, such as a magnet, a coil, and the like. The magnet is connected to the first housing. Optionally, the magnets are attached to the inside wall of the box-like structure. The utility model discloses in, usable adhesive bonds magnet on first casing. The magnet is used for forming a magnetic field, the coil is arranged in the magnetic field generated by the magnet, and the magnetic induction line of the magnet penetrates through the coil. The coil is connected with the second housing. When the exciter works, an alternating electric signal is introduced into the coil, the coil in the magnetic field is acted by an ampere force, and the coil generates vibration relative to the magnetic circuit component. In the present invention, the magnet may be connected to the second housing at the same time. When the magnet is simultaneously connected to the second housing, the magnet and the coil are respectively connected to different positions of the second housing, and relative displacement can be generated between the magnet and the coil.
The utility model discloses a coil can utilize the wire coiling to form. The wire for winding the coil can be an enameled copper wire or a copper-clad aluminum wire. The utility model discloses do not limit to the material of wire. Alternatively, the cross-sectional shape of the wire is provided as a polygon. That is, the shape of the wire is prismatic. The cross section of each wire is polygonal, so that the outer side planes of two adjacent wires can be attached to each other when the coil is wound, the contact area between the wires is increased, and the gap between the adjacent wires is reduced.
The utility model discloses a cross sectional shape that will be used for the wire of coiling sets up to the polygon, when the coiling, the lateral surface of wire is with the plane contact, can effectively reduce the clearance between the wire, like this in the same coil volume, can increase the coiling length of wire, according to circular telegram coil in the magnetic field received drive power and wire length's relation F ═ B ═ I L, wherein B is the magnetic field intensity of magnet, I is the electric current that lets in the coil, L is wire length, it is visible under the equal unchangeable condition of magnetic field intensity and electric current, the drive power that the extension wire length can obviously increase the coil and receive, thereby improve the vibration performance of exciter.
Optionally, the cross-sectional shape of the wire is rectangular.
As an embodiment of the present invention, the cross-sectional shape of the wire 301 may be set to be rectangular. When the wire with the cross section shape is used for winding the coil 30, the gap between the wires in the coil can be further reduced, and the winding length of the wires in the same winding space is improved, so that the driving force of a magnetic field on the coil is increased, and the vibration performance of the exciter is improved.
Optionally, the cross-sectional shape of the wire is square.
As shown in fig. 5, the cross-sectional shape of the wire 301 may be set to be square, which improves the central symmetry of the wire. When the coil 30 is wound, the leads are easier to be stacked seamlessly, gaps among the leads are reduced or even eliminated, and the effective length of the leads in the coil is prolonged, so that the driving force of a magnetic field on the coil is increased, and the vibration performance of the exciter is improved. And meanwhile, the seamless stacking of the leads can improve the utilization rate of space.
Alternatively, the magnets are arranged in pairs, the two magnets of each pair having the same direction of magnetization.
As an embodiment of the present invention, as shown in fig. 1 to 4, the magnets 20 are provided in pairs. A magnetic gap is formed between the two magnets arranged in pairs, and the coil 30 is arranged in the magnetic gap when mounted so that magnetic induction lines generated by the magnets pass through the coil. The magnets arranged in pairs can enhance the magnetic field intensity, increase the driving force borne by the coil, improve the vibration performance of the exciter, improve the symmetry of the internal structure of the exciter and improve the uniformity of mass distribution. Optionally, the direction of magnetization of the two magnets in each pair is the same. The two magnets 20 in the pair are arranged in the same magnetizing direction so that the N pole and the S pole of the two magnets are opposite to each other, that is, the magnetic induction line emitted from the N pole of one magnet passes through the coil and reaches the S pole of the other magnet. Therefore, the magnetic induction line can vertically penetrate through the coil, the magnetic induction intensity in the direction vertical to the coil 30 is increased, the driving force of the coil is increased, and the vibration performance of the exciter is improved.
Optionally, two pairs of magnets are arranged along the vibration direction of the coil assembly, and the magnetizing directions of the two pairs of magnets are opposite to each other to form a magnetic loop.
As an embodiment of the present invention, as shown in fig. 1 to 4, two pairs of magnets 20 are provided along the vibration direction of the coil assembly, that is, in the vertical direction in the drawing. Namely a first magnet pair 201 and a second magnet pair 202 as shown in fig. 1 or 3. The two pairs of magnets are arranged, so that the magnetic field intensity generated by the magnets can be enhanced, and the driving force borne by the coil is increased. The first magnet pair and the second magnet pair are oppositely charged. Alternatively, the two pairs of magnets are magnetized in directions toward the left and right sides of the horizontal direction, respectively. The magnetizing directions of the two pairs of magnets are arranged in opposite directions, so that a complete magnetic loop can be formed, the passing amount of magnetic induction lines in the coil 30 is increased, and the interaction force between the coil and the magnets is increased.
Optionally, in the vibration direction of the coil assembly, the distance between the two pairs of the magnets is smaller than or equal to the height of the winding hole of the coil in the vibration direction.
As an embodiment of the present invention, as shown in fig. 1 to 4, there is a certain distance between the first magnet pair 201 and the second magnet pair 202 along the vibration direction of the coil assembly. After the wire is wound to form the coil 30, a winding hole is left in the middle of the coil. The coil is arranged in the magnetic gap, the winding plane of the coil is parallel to the vertical direction, and the distance between the two pairs of magnets is smaller than or equal to the height of the winding hole in the vertical direction. The arrangement mode can ensure that the part with the lead on the winding plane is penetrated by the magnetic induction line, ensures the effective area of the magnet acting on the coil, is beneficial to increasing the driving force borne by the coil and improves the vibration performance of the exciter.
Optionally, a spring plate is arranged on the second shell, and the magnet is connected to the spring plate.
Optionally, the elastic piece and the second shell are integrally formed.
As an embodiment of the present invention, as shown in fig. 3, the second housing 40 is provided with an elastic piece 401. The spring plate is used for forming connection between the second shell and the magnet. Optionally, the elastic piece is integrally formed with the second shell. In this case, the internal structure of the actuator can be simplified. Optionally, a fixing portion 402 is further disposed on the second housing. The elastic sheet can generate displacement relative to the fixing part. Optionally, the displacement of the resilient tab relative to the fixed portion is in a vertical direction. As an example, the elastic sheet may be a sheet structure protruding outward from the second housing and forming an angle with the horizontal plane of the second housing, and the sheet structure may be elastically deformed to allow an end of the sheet structure away from the horizontal plane of the second housing to elastically displace in a vertical direction. Alternatively, the magnet is attached to the spring and the coil is attached to the fixed portion. When the coil is vibrated by the driving force, the relative movement between the coil and the magnet can be generated by the vibration of the magnet connected to the elastic sheet. The structural form allows the magnet and the coil to be arranged on the second shell, reduces the number of components in the exciter, and reduces the complexity of the internal structure of the exciter.
Optionally, the fixing portion 401 is disposed in the middle of the second housing 40, and the elastic pieces 402 are disposed on two sides of the fixing portion. Referring to fig. 3, the utility model discloses in with the fixed part setting in the middle part of second casing, the shell fragment setting can improve the convenience of coil and magnet installation in the both sides of fixed part.
Optionally, two adjacent wires in the coil are connected by an adhesive.
As an embodiment of the present invention, a thin layer of adhesive is coated on the prism surface of the quadrangular prism shaped wire 301, and two adjacent wires are connected and fixed by the adhesive. Thus, after the coil 30 is wound, the wires are regularly arranged and are not easy to scatter. Optionally, the thickness of the adhesive is negligible relative to the length or width of the cross-section of the wire, that is, the thickness of the adhesive is less than the cross-sectional length or width of the wire. Thus, the shape advantage of the wires can be fully exerted to reduce the gaps among the wires.
Optionally, the exciter further comprises a flexible circuit board disposed between the coil and the second housing.
As an embodiment of the present invention, the exciter further comprises a flexible circuit board. The flexible circuit board is used for electrically communicating with a circuit or a power supply device outside the coil and the exciter so as to feed an electric signal into the coil. Optionally, other circuit components are integrated on the flexible circuit board. As an example, a flexible circuit board may be arranged between the coil and the second housing, i.e. the flexible circuit board is connected to the second housing, and the coil is connected to a side of the flexible circuit board facing away from the second housing. In this embodiment, not only is the convenience of connecting the flexible circuit board and the second housing improved, but also the electrical connection structure of the coil and the flexible circuit board can be simplified. Alternatively, a flexible circuit board may be connected to the fixing portion of the second housing, and the coil is connected to the flexible circuit board. The flexible circuit board is connected to the fixing portion, so that interference between the flexible circuit board and the magnet can be avoided.
The utility model also provides an electronic product. The electronic product comprises the exciter as described above, and further comprises a product main body, wherein the product main body is divided into a fixed part and a vibrating part, one of the first shell and the second shell is connected with the vibrating part, the other of the first shell and the second shell is connected with the fixed part, and the vibrating part is configured to be capable of vibrating relative to the fixed part. The vibrating part may be a screen and a rear cover of an electronic product for vibrating and sounding (hereinafter, the screen is taken as an example for description), and the fixing part may be a part of a structure of the product main body, and the fixing part may be a middle frame, a side wall, or a PCB of the product main body. In order to mount other electronic devices in the product body, the product body is often configured with a partition, a middle frame and other structural components, which have good structural stability in the electronic product, and are used for mounting the electronic devices on one hand and protecting the electronic devices on the other hand. Therefore, the vibration reliability can be improved by using such a structural member in the product body as a fixing member.
The exciter sets up in the product main part, and the electronic product can be cell-phone, panel computer etc. this the utility model discloses do not limit to this. The screen is disposed on the product main body and serves as a display screen of the electronic product. And the screen is driven to vibrate and sound through the interaction force of the coil and the magnetic assembly.
The utility model discloses utilize prismatic wire to wind into the coil, prolonged the length of wire, increase the drive power of coil vibration, be favorable to increasing the vibration range of coil to improve the loudness of the sound signal that the electronic product sent.
The utility model discloses in set the cross sectional shape through with the coil wire to the rectangle, can reduce the space between the wire when the coil coiling, furthest increases the number of turns of coil in the same space, prolongs the effective length of coil, and then increases the drive power that the coil received, has improved the vibration performance of exciter. Meanwhile, the magnets arranged in pairs can increase the magnetic field intensity and correct the magnetic force lines, so that the magnetic force lines vertically penetrate through the coil, and the driving force of the magnets on the coil is improved. The multiple pairs of magnets can increase the magnetic field intensity, the distance between the two pairs of magnets is smaller than or equal to the height of the winding hole in the vertical direction, so that the position, on the winding plane, of the wire can be ensured to be penetrated by the magnetic induction wire, the effective area of the coil acted by the magnets is ensured, and the driving force applied to the coil is increased. The two adjacent wires are fixedly connected by using the adhesive, so that the structural stability of the coil can be improved, and the wire scattering is prevented.
Although certain specific embodiments of the present invention have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. An actuator, comprising:
a magnetic circuit assembly including a first housing and a magnet coupled to the first housing;
a coil assembly including a second housing and a coil disposed within a magnetic field formed by the magnet; the coil is connected to the second shell;
the coil assembly is configured to be capable of generating vibration relative to the magnetic circuit assembly;
the coil is formed by winding a wire, and the cross section of the wire is polygonal.
2. An actuator according to claim 1, wherein the cross-sectional shape of the wire is rectangular.
3. An actuator according to claim 2, wherein the wires are square in cross-sectional shape.
4. An actuator according to claim 1, wherein the magnets are arranged in pairs, the two magnets of each pair having the same direction of magnetisation.
5. The exciter of claim 4, wherein two pairs of magnets are provided along the vibration direction of the coil assembly, and the two pairs of magnets are oppositely charged to form a magnetic circuit.
6. An actuator according to claim 5, wherein the distance between two pairs of said magnets in the direction of vibration of said coil assembly is smaller than or equal to the height of the winding hole of said coil in that direction.
7. The actuator according to claim 1, wherein said second housing has a spring, and said magnet is attached to said spring.
8. An actuator according to claim 7, wherein the resilient tab is integrally formed with the second housing.
9. An actuator according to claim 1, wherein two adjacent wires in the coil are connected by an adhesive.
10. An electronic product, comprising:
an actuator of any one of claims 1-9;
a fixing member;
a vibrating member configured to be capable of vibrating with respect to the fixing member;
one of the first case and the second case is connected to the vibrating member, and the other of the first case and the second case is connected to the fixing member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922457753.6U CN211089948U (en) | 2019-12-30 | 2019-12-30 | Exciter and electronic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922457753.6U CN211089948U (en) | 2019-12-30 | 2019-12-30 | Exciter and electronic product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211089948U true CN211089948U (en) | 2020-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922457753.6U Active CN211089948U (en) | 2019-12-30 | 2019-12-30 | Exciter and electronic product |
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| Country | Link |
|---|---|
| CN (1) | CN211089948U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021135831A1 (en) * | 2019-12-30 | 2021-07-08 | 歌尔股份有限公司 | Exciter and electronic product |
-
2019
- 2019-12-30 CN CN201922457753.6U patent/CN211089948U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021135831A1 (en) * | 2019-12-30 | 2021-07-08 | 歌尔股份有限公司 | Exciter and electronic product |
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