CN109327775B

CN109327775B - Special-shaped voice coil and loudspeaker and electronic equipment using same

Info

Publication number: CN109327775B
Application number: CN201811211812.5A
Authority: CN
Inventors: 段均钟
Original assignee: Merry Technology Suzhou Co Ltd
Current assignee: Merry Technology Suzhou Co Ltd
Priority date: 2018-10-17
Filing date: 2018-10-17
Publication date: 2021-03-26
Anticipated expiration: 2038-10-17
Also published as: CN109327775A

Abstract

The invention provides a special-shaped voice coil, a loudspeaker using the same and electronic equipment using the same. The special-shaped voice coil comprises at least two coil layers which are wound, and each coil layer comprises a side edge part and a corner part; the areas formed by the adjacent two coil layers are different. The special-shaped voice coil can increase the bonding area of the voice coil and the vibrating diaphragm, improve the bonding strength of the voice coil and the vibrating diaphragm, increase the ventilation at four corners of the voice coil and improve the heat dissipation effect of the voice coil.

Description

Special-shaped voice coil and loudspeaker and electronic equipment using same

Technical Field

The present invention relates to a voice coil, and more particularly, to a voice coil, and a speaker and an electronic device using the same.

Background

In recent years, with the rapid development of mobile communication technology and electronic devices, more and more mobile communication devices, such as mobile terminals, e.g., mobile phones, handheld game consoles, portable computers, multimedia players, etc., are required to transmit audio signals.

An electroacoustic product is a device that converts electrical energy into acoustic energy, also commonly referred to as a loudspeaker or horn. A conventional speaker generally includes a frame, a magnetic circuit system disposed in the frame, a voice coil movably accommodated in the magnetic circuit system, and a diaphragm disposed on the frame, wherein the voice coil is connected to the diaphragm to drive the diaphragm to vibrate, thereby generating sound. The voice coil is an indispensable component in an electroacoustic product, and the size and the performance of the voice coil determine whether the electroacoustic product can meet the requirements of mobile terminal equipment on sound quality, so that the voice coil is small, light and easy to carry.

Fig. 1A is a plan view of an assembly of a voice coil and a diaphragm according to the related art, and fig. 1B is a partially enlarged view of the assembly of fig. 1A. As shown in fig. 1A and 1B, a voice coil 10 and a diaphragm 11 in a conventional electroacoustic conversion device are bonded together, typically by using glue 12.

Above-mentioned voice coil loudspeaker voice coil and vibrating diaphragm's package assembly is owing to realize the laminating of voice coil loudspeaker voice coil and vibrating diaphragm for fixing through the glue single face. Because the binding face between voice coil loudspeaker voice coil and the vibrating diaphragm is less, lead to easily taking place to sway between voice coil loudspeaker voice coil and the vibrating diaphragm and shake, especially speaker work is under high-power state, and it can be more serious to sway the vibrations to lead to the sound quality to seriously reduce, can not satisfy the demand of big amplitude product.

Disclosure of Invention

In order to solve the above technical problems, the present invention provides a voice coil with a special shape, and a speaker and an electronic device using the same, which can increase the bonding area between the voice coil and the diaphragm, improve the bonding strength between the voice coil and the diaphragm, increase the ventilation at the four corners of the voice coil, and improve the heat dissipation effect of the voice coil.

In order to achieve the above object, the present invention provides a voice coil having a profile, comprising:

at least two layers of wound coil layers, each coil layer including side portions and corner portions;

wherein, the areas formed by the adjacent two coil layers are different.

In the above-mentioned voice coil assembly, a step is formed between two adjacent coil layers in the corner region.

In the above-mentioned voice coil assembly, a gap is further formed between two adjacent coil layers in the corner region.

In the above-mentioned voice coil, the two layers of coils form inflection points between the side portions and the corners, and two adjacent inflection points in the corner regions of the coil of one layer are connected by a straight line or a curved line of the coil.

In the above-mentioned voice coil assembly, the coil layers are flush with each other at the side edge portions or form a step therebetween.

In the above-mentioned voice coil assembly, the coil of the other of the two coil layers is polygonal, elliptical or circular.

In order to achieve the above object, the present invention further provides a speaker including at least one of the above-mentioned voice coil profiles.

In order to achieve the above object, the present invention also provides an electronic device including at least one speaker as described above.

The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.

Drawings

FIG. 1A is a top view of a prior art voice coil and diaphragm assembly;

FIG. 1B is an enlarged view of a portion of the assembly of FIG. 1A;

FIG. 2A is a top view of a voice coil configuration according to an embodiment of the present invention;

FIG. 2B is an enlarged view of a portion of the voice coil configuration of FIG. 2A;

FIG. 3 is a cross-sectional view taken along line C-C' of FIG. 2A;

FIG. 4 is a top view of a voice coil configuration according to another embodiment of the present invention;

FIGS. 5A and 5B are top views of a voice coil configuration according to another embodiment of the present invention;

FIG. 6 is a top view of a voice coil with a special shape according to still another embodiment of the present invention.

Wherein, the reference numbers:

10: voice coil 11: vibrating diaphragm

12: 100, glue water: special-shaped voice coil

101: first layer coil 102: first layer coil side edge part

103: first-layer coil corner 104: step

105: gap 106: inner side surface

107: outer side surface 201: second layer coil

202: second-layer coil side edge portion 203: second layer coil corner

206: inner side surface 207: outer side surface

A. B: inflection point

C-C': section line

Detailed Description

The invention will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:

certain terms are used throughout the description and following claims to refer to particular components. As one of ordinary skill in the art will appreciate, manufacturers may refer to a component by different names. This specification and the claims that follow do not intend to distinguish between components that differ in name but not function.

In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. In addition, the term "connected" is intended to encompass any direct or indirect electrical connection. Indirect electrical connection means include connection by other means.

The voice coil profile of the present invention may include at least two layers of coils, and for simplicity, the following description will be made in detail by taking only two layers of coils as an example.

Example one

Fig. 2A is a top view of a voice coil profile structure according to an embodiment of the present invention, and fig. 2B is a partially enlarged view of the voice coil profile structure of fig. 2A. As shown in fig. 2A and 2B, the voice coil profile 100 of the present invention includes two layers of coils wound together by a conductive wire, such as a first layer of coil 101 and a second layer of coil 201, wherein the first layer of coil 101 is rectangular or rectangular-like. The first layer coil 101 includes a first layer coil side portion 102 and a first layer coil corner portion 103; the second layer coil 201 includes a second layer coil side portion 202 and a second layer coil corner portion 203.

Looking from the direction perpendicular to the voice coil profile 100, the first layer coil side part 102 is flush with the second layer coil side part 202, the inflection point a and the inflection point B are arranged between the second layer coil side part 202 and the second layer coil corner 203 of the second layer coil 201, and the inflection point a and the inflection point B are connected by the coil to form a straight line. Thus, the first layer coil 101 and the second layer coil 201 are not flush with each other in the corner regions. The area S2 surrounded by the second layer coil 201 is different from the area S1 surrounded by the first layer coil 101, where S2 < S1.

As shown in fig. 2B, the voice coil profile 100 of the present invention is fixed to the diaphragm 11 by glue 12 on both sides of the first layer coil 101 and the second layer coil 201. Because the bonding area of the vibrating diaphragm 11 and the special-shaped voice coil 100 is increased, the bonding strength between the voice coil and the vibrating diaphragm is improved, and the swinging vibration under high power is reduced.

Further, as shown in fig. 2A and 2B, a step 104 is formed between the first layer coil 101 and the second layer coil 201 in the corner region.

Further, as shown in fig. 2A, a gap 105 is formed between the first layer coil 101 and the second layer coil 201 in the corner region. After the voice coil profile 100 forms the gap 105, the voice coil increases the contact area with the outside, which helps dissipate heat from the voice coil.

Fig. 3 is a cross-sectional view taken along line C-C' of fig. 2A. As shown in fig. 3, the coil 201 is linearly connected between the inflection points a and B due to the second layer. Therefore, in the corner region, a step 104 is formed between the first layer coil 101 and the second layer coil 201.

Example two

The first embodiment of the present invention has been described in detail with the first layer coil side edge portion 102 being flush with the second layer coil side edge portion 202. FIG. 4 is a top view of another embodiment of the voice coil configuration of the present invention. As shown in fig. 4, the present invention can also be realized in such a manner that the inner side surface 206 of the second-layer coil side portion 202 is kept flush with the inner side surface 106 of the first-layer coil side portion 102, and the outer side surface 207 of the second-layer coil side portion 202 is recessed inward with respect to the outer side surface 107 of the first-layer coil side portion 102, so that the step 104 is also formed between the first-layer coil side portion 102 and the second-layer coil side portion 202.

EXAMPLE III

The first layer coil 101 of the embodiment of the present invention is described in detail as being rectangular or rectangular-like. Fig. 5A and 5B are top views of a voice coil profile according to another embodiment of the present invention. As shown in fig. 5A and 5B, the shape of the first layer coil 101 of the voice coil profile 100 of the present invention may be a triangle, a pentagram, or other polygonal shape. In addition, the shape may be an ellipse or a circle.

Example four

In the first embodiment of the present invention, the inflection point a and the inflection point B of the second layer coil 201 are connected by a coil to form a straight line. FIG. 6 is a top view of a voice coil with a special shape according to still another embodiment of the present invention. As shown in fig. 6, the inflection points a and B of the second layer coil 201 are connected by a coil to form an arc or other curve. The voice coil is connected by adopting an arc or a curve, so that the joint area of the voice coil and the vibrating diaphragm can be further increased, and the swinging vibration of the voice coil under high power is greatly reduced.

The invention also provides a loudspeaker comprising at least one profiled voice coil 100 as described above.

The invention also provides electronic equipment, which comprises at least one loudspeaker.

It should be noted that in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A voice coil profile, comprising:

the areas formed by the two adjacent coil layers in a surrounding mode are different, and a step is formed between the two adjacent coil layers in the corner area.

2. The voice coil profile of claim 1, wherein a gap is further formed between adjacent coil layers in the corner region.

3. The voice coil profile of claim 2, wherein one of the two coil layers forms inflection points between the side portions and the corners, and two adjacent inflection points in the corner regions of the one of the coil layers are connected by a coil straight line or a coil curved line.

4. The voice coil profile of claim 3, wherein adjacent coil layers are flush or form a step between them at the side edge portions.

5. The voice coil profile of claim 4, wherein the shape of the coil of the other of the two coil layers is polygonal, elliptical or circular.

6. A loudspeaker comprising at least one voice coil according to any one of claims 1 to 5.

7. An electronic device, characterized in that it comprises at least one loudspeaker according to any of the claims 6.