Voice coil winding method, voice coil, and loudspeaker provided with voice coil

Abstract

The present invention relates to the field of electroacoustic conversion, in particular to a voice coil winding method, a voice coil, and a loudspeaker provided with the voice coil. The voice coil is formed by winding a wire, the winding method comprising the following steps: using the wire to wind an inner-layer wire layer; winding a first outer-layer wire layer, the first outer-layer wire layer being wound on an outer side of the inner-layer wire layer; winding a second outer-layer wire layer, the second outer-layer wire layer being wound on an outer side of the first outer-layer wire layer. The voice coil of the present invention employs a double diagonal or triple diagonal pulling process to adjust the structure and position of the outermost few turns of the voice coil, so as to obtain a voice coil arrangement and configuration with relatively good harmonic distortion, which allows the voice coil to be effectively adjusted in terms of flatness and symmetry so as to improve distortion. A voice coil with such a structure can be used in loudspeakers even when the height of the voice coil cannot be effectively increased, thereby effectively compensating for deficiencies caused by the demand for thinner and more lightweight mobile phones.

Description

Voice coil winding method, voice coil and loudspeaker with the voice coil TECHNICAL FIELD

[0001] The present application relates to the field of electro-acoustic conversion, in particular to a voice coil winding method, a voice coil and a loudspeaker with the voice coil. BACKGROUND

[0002] As one of the core components in audio equipment, the voice coil is mainly applied to sound conversion equipment such as loudspeakers and earphones. Its principle is based on electromagnetic induction and vibration principle. The interaction between the magnetic field generated by the current in the voice coil and the fixed magnetic field makes the voice coil vibrate, thereby driving the diaphragm connected thereto to produce sound. TECHNICAL PROBLEM

[0003] The structural design of the voice coil is a key factor affecting its performance. The existing voice coil cannot achieve arbitrary voice coil arrangement when the outermost layer is not full-layer arranged, resulting in that the voice coil arrangement with better harmonic distortion cannot be achieved. At the same time, in order to meet the demand of thin and light mobile phones, the acoustic performance of the voice coil is also limited.

[0004] Therefore, it is necessary to provide a new voice coil winding method, a voice coil and a loudspeaker with the voice coil to solve the above technical problems. TECHNICAL SOLUTION

[0005] The purpose of the present application is to provide a voice coil which improves distortion by adjusting the flatness and symmetry of the voice coil. At the same time, the voice coil can be applied in the case where the loudspeaker cannot effectively increase the height of the voice coil, and can effectively make up for the deficiency caused by the demand of thin and light mobile phones.

[0006] In order to achieve the above purpose, in a first aspect, the present application provides a voice coil which is wound by a wire into a ring structure with a through hole in the middle, the through hole is in the height direction of the voice coil, the voice coil includes a top at one end of the height direction and a bottom at the other end, and a middle between the top and the bottom, the voice coil includes a plurality of wire layers stacked from inside to outside, the wire layer includes a plurality of wire coils stacked along the height direction, the top includes M wire layers, the bottom includes N wire layers, and the middle includes Y wire layers, wherein M, N are greater than Y, M, N and Y are natural numbers, and the middle is located at the center position in the height direction.

[0007] Preferably, the wire layer comprises an inner wire layer surrounding the through hole, a first outer wire layer surrounding the inner wire layer, and a second outer wire layer surrounding the first outer wire layer, the middle part only comprises the inner wire layer, the top part and / or the bottom part comprises the inner wire layer, the first outer wire layer and the second outer wire layer, the number of wire loops of the inner wire layer is greater than that of the first outer wire layer, and the number of wire loops of the first outer wire layer is greater than that of the second outer wire layer.

[0008] Preferably, the top part and / or the bottom part further comprises a third outer wire layer surrounding the second outer wire layer, and the number of wire loops of the third outer wire layer is less than that of the second outer wire layer.

[0009] Preferably, the voice coil comprises at least two layers of the inner wire layer.

[0010] In a second aspect, the present application provides a winding method of a voice coil, the winding method is used for winding the voice coil according to any one of the above embodiments, and the winding method comprises the following steps:

[0011] winding an inner wire layer by the wire;

[0012] winding a first outer wire layer outside the inner wire layer;

[0013] winding a second outer wire layer outside the first outer wire layer; the wire loop of the first outer wire layer close to the middle part is closer to the middle part than the wire loop of the second outer wire layer close to the middle part, and the wire loops of the first outer wire layer and the second outer wire layer close to the middle part form an inclined surface.

[0014] Preferably, the winding of the first outer wire layer comprises the following steps:

[0015] after winding the wire around the inner wire layer in the top part to form the first outer wire layer of the top part by a first preset number of turns, the wire is obliquely pulled to the bottom part and wound around the inner wire layer by a second preset number of turns to form the first outer wire layer of the bottom part.

[0016] Preferably, the winding of the second outer wire layer comprises the following steps:

[0017] after winding the wire around the first outer wire layer in the bottom part to form the second outer wire layer of the bottom part by a third preset number of turns, the wire is obliquely pulled to the top part and wound around the first outer wire layer by a fourth preset number of turns to form the second outer wire layer of the top part.

[0018] Preferably, the third preset number of turns is less than the second preset number of turns.

[0019] Preferably, the fourth preset number of turns is less than the first preset number of turns.

[0020] Preferably, the winding method further comprises the following sub-steps:

[0021] winding a third outer conductor layer outside the second outer conductor layer.

[0022] Preferably, winding the third outer conductor layer comprises the following steps:

[0023] After winding the conductor around the second outer conductor layer for a fifth preset number of turns to form the third outer conductor layer of the top part, the conductor is obliquely pulled to the bottom part and wound around the second outer conductor layer for a sixth preset number of turns to form the third outer conductor layer of the bottom part.

[0024] Preferably, the fifth preset number of turns is less than the fourth preset number of turns, and the sixth preset number of turns is less than the third preset number of turns.

[0025] In a third aspect, the present application also provides a loudspeaker comprising a vibrating system and a magnetic circuit system, wherein the vibrating system comprises the voice coil as described in the above embodiments. Advantages

[0026] Compared with the prior art, the voice coil of the present application adjusts the structure and position of the outermost several turns of the voice coil by using the double-oblique-pulling or triple-oblique-pulling process to obtain a voice coil arrangement combination with better harmonic distortion, which can effectively adjust the flatness and symmetry of the voice coil to improve the distortion. The voice coil with this structure can be applied in a situation where the height of the voice coil cannot be effectively increased in a loudspeaker, and can effectively compensate for the deficiency caused by the demand for light and thin mobile phones. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0028] FIG. 1 is a perspective structural schematic view of a voice coil provided by an embodiment of the present application;

[0029] FIG. 2 is a schematic view of a double-oblique-pulling voice coil structure along the A-A line in FIG. 1;

[0030] Fig. 3 is a schematic view of another double-inclined-tension voice coil structure along the section view of line A-A in Fig. 1;

[0031] Fig. 4 is a schematic view of a triple-inclined-tension voice coil structure along the section view of line A-A in Fig. 1;

[0032] Fig. 5 is a schematic view of another triple-inclined-tension voice coil structure along the section view of line A-A in Fig. 1;

[0033] Fig. 6 is a schematic view of simulation curves of BLx simulation of a voice coil provided by an embodiment of the present application and a conventional voice coil.

[0034] In the figures, 100, voice coil, 1, inner wire layer, 2, first outer wire layer, 201, top first outer wire layer, 202, bottom first outer wire layer, 3, second outer wire layer, 301, top second outer wire layer, 302, bottom second outer wire layer, 4, third outer wire layer, 401, top third outer wire layer, 402, bottom third outer wire layer, 10, top, 11, middle, 12, bottom, 20, through hole. Best mode of the present application

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0036] Please refer to Figs. 1 to 6, in a first aspect, the present application provides a voice coil 100, which is wound by wires into a ring structure with a through hole 20 in the middle, the height direction of the through hole 20 is the height direction of the voice coil 100, the voice coil 100 includes a top 10 at one end of the height direction and a bottom 12 at the other end, and a middle 11 between the top 10 and the bottom 12, the voice coil 100 includes multiple wire layers stacked from inside to outside, the wire layers include multiple wire coils stacked along the height direction, the top 10 includes M wire layers, the bottom 12 includes N wire layers, and the middle 11 includes Y wire layers, wherein M, N are both greater than Y, and M, N, Y are all natural numbers.

[0037] In the embodiment, the wire layer comprises an inner wire layer 1 surrounding the through hole 20, a first outer wire layer 2 surrounding the outer side of the inner wire layer 1, and a second outer wire layer 3 surrounding the outer side of the first outer wire layer 2, the middle part 11 only comprises the inner wire layer 1, the top part 10 and / or the bottom part 12 comprises the inner wire layer 1, the first outer wire layer 2 and the second outer wire layer 3, the number of wire loops of the inner wire layer 1 is greater than the number of wire loops of the first outer wire layer 2, and the number of wire loops of the first outer wire layer 2 is greater than the number of wire loops of the second outer wire layer 3.

[0038] In the embodiment, the top part 10 and / or the bottom part 12 further comprises a third outer wire layer 4 surrounding the outer side of the second outer wire layer 3, and the number of wire loops of the third outer wire layer 4 is less than the number of wire loops of the second outer wire layer 3.

[0039] In the embodiment, the voice coil 100 comprises at least two layers of the inner wire layer 1.

[0040] In the embodiment, the middle part 11 is located at the center position in the height direction, so that the harmonic distortion of the arrangement combination of the voice coil 100 structure is better.

[0041] In the embodiment, the wire loops of the top part 10 close to one side of the middle part 11 and the wire loops of the bottom part 12 close to one side of the middle part 11 jointly form an inclined surface, so that the harmonic distortion of the arrangement combination of the voice coil 100 structure is better.

[0042] In a second aspect, the application further provides a winding method of a voice coil 100, the winding method is used for winding the voice coil 100 according to any one of the above embodiments, and the winding method comprises the following steps:

[0043] winding the inner wire layer 1 by the wire;

[0044] winding the first outer wire layer 2 on the outer side of the inner wire layer 1;

[0045] winding the second outer wire layer 3 on the outer side of the first outer wire layer 2; the wire loops of the first outer wire layer 2 close to the middle part 11 are closer to the middle part 11 than the wire loops of the second outer wire layer 3 close to the middle part 11, and jointly form an inclined surface.

[0046] In the embodiment, winding the first outer wire layer 2 comprises the following steps:

[0047] After the first preset number of turns of the wire are wound around the inner wire layer 1 at the top 10 to form the first outer wire layer 201 of the top, the wire is obliquely pulled to the bottom 12 and wound around the inner wire layer 1 for a second preset number of turns to form the first outer wire layer 202 of the bottom.

[0048] In the embodiment, the winding of the second outer wire layer 3 comprises the following steps:

[0049] After the third preset number of turns of the wire are wound around the first outer wire layer 2 at the bottom 12 to form the second outer wire layer 302 of the bottom, the wire is obliquely pulled to the top 10 and wound around the first outer wire layer 2 for a fourth preset number of turns to form the second outer wire layer 301 of the top.

[0050] In the embodiment, the third preset number of turns is less than the second preset number of turns.

[0051] In the embodiment, the fourth preset number of turns is less than the first preset number of turns.

[0052] In the embodiment, as shown in FIG. 2 and FIG. 3, FIG. 2 is a schematic diagram of the structure of the double-oblique-pull voice coil 100 along the section view of line A-A in FIG. 1, and FIG. 3 is another schematic diagram of the structure of the double-oblique-pull voice coil 100 along the section view of line A-A in FIG. 1. The structure of the first outer wire layer 2 and the second outer wire layer 3 is adjusted by the double-oblique-pull process, so that the arrangement and combination of the voice coil 100 are adjusted to obtain an arrangement and combination of the voice coil 100 with better harmonic distortion, and the flatness and symmetry of the voice coil 100 can be effectively adjusted to improve the distortion. The first preset number of turns, the second preset number of turns, the third preset number of turns, and the fourth preset number of turns can be set according to actual conditions to adjust the structure of the voice coil 100, which is not limited herein.

[0053] In the embodiment, the winding method further comprises the following sub-steps:

[0054] The third outer wire layer 4 is wound, and the third outer wire layer 4 is wound outside the second outer wire layer 3.

[0055] In the embodiment, the winding of the third outer wire layer 4 comprises the following steps:

[0056] After the fifth preset number of turns of the wire are wound around the second outer wire layer 3 at the top 10 to form the third outer wire layer 401 of the top, the wire is obliquely pulled to the bottom 12 and wound around the second outer wire layer 3 for a sixth preset number of turns to form the third outer wire layer 402 of the bottom.

[0057] In the embodiment, the fifth preset number of turns is less than the fourth preset number of turns, and the sixth preset number of turns is less than the third preset number of turns.

[0058] In the embodiment, as shown in FIG. 4 and FIG. 5, FIG. 4 is a schematic diagram of a three-inclined drawing voice coil 100 structure along the section view of line A-A in FIG. 1; and FIG. 5 is another schematic diagram of a three-inclined drawing voice coil 100 structure along the section view of line A-A in FIG. 1. The present application adjusts the structure of the first outer wire layer 2, the second outer wire layer 3 and the third outer wire layer 4 through a three-inclined drawing process, thereby adjusting the arrangement combination of the voice coil 100 to obtain a voice coil 100 arrangement combination with better harmonic distortion. The first preset number of turns, the second preset number of turns, the third preset number of turns, the fourth preset number of turns, the fifth preset number of turns and the sixth preset number of turns can be set according to actual conditions to adjust the structure of the voice coil 100, which is not limited herein.

[0059] Compared with the prior art, the voice coil 100 of the present application adjusts the structure and position of the outermost several turns of the voice coil 100 through a two-inclined drawing or three-inclined drawing process to obtain a voice coil 100 arrangement combination with better harmonic distortion, which can effectively adjust the flatness and symmetry of the voice coil 100 to improve distortion. The voice coil 100 with this structure can be applied in a situation where the height of the voice coil 100 cannot be effectively increased in a loudspeaker, and can effectively compensate for the deficiency caused by the demand for light and thin mobile phones.

[0060] In a third aspect, the present application further provides a loudspeaker, which comprises a vibration system and a magnetic circuit system, and the vibration system is the voice coil 100 as described in the above embodiments. The same technical effects as the voice coil 100 described in the above embodiments can be achieved, which will not be described herein.

[0061] The above description is only an embodiment of the present application, and it should be pointed out that, for those skilled in the art, improvements can be made without departing from the concept of the present application, but these all belong to the protection scope of the present application.

Claims

1. A voice coil, which is wound by a wire into a ring structure with a through hole in the middle, wherein the through hole penetrates in the height direction of the voice coil, characterized in that: The voice coil includes a top at one end and a bottom at the other end in the height direction, and a middle portion located between the top and the bottom. The voice coil includes multiple wire layers stacked from the inside to the outside, and the wire layers include multiple wire coils stacked along the height direction. The top includes M wire layers, the bottom includes N wire layers, and the middle portion includes Y wire layers, wherein M and N are both greater than Y, and M, N, and Y are all natural numbers. The middle portion is located at the center position in the height direction.

2. The voice coil according to claim 1, wherein The conductor layer includes an inner conductor layer surrounding the through hole, a first outer conductor layer wound around the outer side of the inner conductor layer, and a second outer conductor layer wound around the outer side of the first outer conductor layer. The middle portion includes only the inner conductor layer, and the top and / or the bottom portion include the inner conductor layer, the first outer conductor layer, and the second outer conductor layer. The number of conductor coils in the inner conductor layer is greater than the number of conductor coils in the first outer conductor layer, and the number of conductor coils in the first outer conductor layer is greater than the number of conductor coils in the second outer conductor layer.

3. The voice coil according to claim 2, wherein: The top and / or the bottom further includes a third outer wire layer wound outside the second outer wire layer, and the number of wire coils in the third outer wire layer is smaller than the number of wire coils in the second outer wire layer.

4. The voice coil according to claim 3, wherein The voice coil includes at least two inner conductor layers.

5. A method for winding a voice coil, characterized in that: The winding method is used to wind the voice coil according to claim 1, and the winding method comprises the following steps: Winding the wire to form an inner wire layer; Winding a first outer conductor layer, wherein the first outer conductor layer is wound outside the inner conductor layer; A second outer wire layer is wound, and the second outer wire layer is wound on the outside of the first outer wire layer; the wire coils of the first outer wire layer close to the middle are closer to the middle than the corresponding wire coils of the second outer wire layer close to the middle, and together they form an inclined surface.

6. The voice coil winding method according to claim 5, wherein: Winding the first outer conductor layer comprises the following steps: After the wire is wound around the inner wire layer at the top for a first preset number of turns to form the first outer wire layer at the top, the wire is obliquely pulled to the bottom and wound around the inner wire layer for a second preset number of turns to form the first outer wire layer at the bottom.

7. The voice coil winding method according to claim 6, wherein: Winding the second outer conductor layer comprises the following steps: After the wire is wound around the first outer wire layer at the bottom for a third preset number of turns to form the second outer wire layer at the bottom, the wire is obliquely pulled to the top and wound around the first outer wire layer for a fourth preset number of turns to form the second outer wire layer at the top.

8. The voice coil winding method according to claim 7, wherein: The third preset number of turns is smaller than the second preset number of turns; and the fourth preset number of turns is smaller than the first preset number of turns.

9. The voice coil winding method according to claim 7, wherein: The winding method further comprises the following sub-steps: A third outer conductor layer is wound, and the third outer conductor layer is wound outside the second outer conductor layer.

10. The voice coil winding method according to claim 9, wherein: Winding the third outer conductor layer comprises the following steps: After the wire is wound around the second outer wire layer at the top for a fifth preset number of turns to form the third outer wire layer at the top, the wire is obliquely pulled to the bottom and wound around the second outer wire layer for a sixth preset number of turns to form the third outer wire layer at the bottom.

11. The voice coil winding method according to claim 10, wherein: The fifth preset number of turns is smaller than the fourth preset number of turns, and the sixth preset number of turns is smaller than the third preset number of turns.

12. A loudspeaker comprising a vibration system and a magnetic circuit system, characterized in that: The vibration system includes the voice coil according to claim 1.

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