CN212278458U

CN212278458U - Loudspeaker

Info

Publication number: CN212278458U
Application number: CN202021473329.7U
Authority: CN
Inventors: 王璟; 朱波
Original assignee: BEIJING 797 HUAYIN ELECTRONICS CO LTD
Current assignee: BEIJING 797 HUAYIN ELECTRONICS CO LTD
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-01-01
Anticipated expiration: 2030-07-23

Abstract

The application provides a loudspeaker, comprising: a basin stand; the permanent magnet is arranged inside the basin stand; and the voice coil is arranged in a magnetic field generated by the permanent magnet, is planar and is connected with the basin frame. The loudspeaker of this application is through setting up the voice coil loudspeaker voice coil into plane, has reduced the thickness of loudspeaker greatly, realizes the ultra-thin design of loudspeaker.

Description

Loudspeaker

Technical Field

The utility model relates to an electroacoustic technology field especially relates to a loudspeaker.

Background

The voice coil is a driving unit of the electrodynamic loudspeaker, and is wound on a paper tube by a thin enameled wire and placed in a magnetic gap of a magnetic circuit system. When a voice current signal is introduced into the coil of the voice coil, the magnetic field of the magnetic circuit generates acting force on the coil, so that the voice coil vibrates, the voice coil vibrates to drive the cone to vibrate, and the cone pushes air to make a sound.

As shown in fig. 1, a voice coil 1 of a conventional speaker is composed of a bobbin 11 and a coil 12, and is formed in a cylindrical shape in order to obtain magnetic field energy in a gap of a magnetic circuit system 3 of the speaker, the coil 12 is energized to move under the action of a magnetic field, so as to drive the bobbin 12 to move, and the bobbin 12 drives a cone 2 to vibrate and make a sound. But the cylindrical skeleton has a certain extent, resulting in an excessive thickness of the speaker.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above problems, embodiments of the present application provide a speaker, which solves the problem that the thickness of the speaker is too large due to the fact that the voice coil bobbin of the existing speaker has a certain extension degree.

In order to achieve the above purpose, the embodiments of the present application adopt the following technical solutions:

in a first aspect, the present application provides a loudspeaker comprising: a basin stand; the permanent magnet is arranged inside the basin stand; and the voice coil is arranged in a magnetic field generated by the permanent magnet, is planar and is connected with the basin frame.

In another possible implementation, the voice coil includes a conductive coil wound in a multi-layer ring structure in the same plane.

In another possible implementation, the conductive coil is an enameled wire coil, and two adjacent layers of the multi-layer annular structures are tightly attached and fixedly connected through gluing.

In another possible implementation, the voice coil further includes a rigid voice coil support, the voice coil support is a multi-layer ring structure located in the same plane, gaps equal to or larger than the diameter of the conductive coil are formed between layers of the multi-layer ring structure, and the conductive coil is wound on the multi-layer ring structure.

In another possible implementation, the voice coil further includes a substrate, an annular protrusion structure is disposed on the substrate, and the conductive coil is wound on the annular protrusion structure.

In another possible implementation, the permanent magnet is arranged at the bottom of the basin stand, and the voice coil is arranged right above the permanent magnet and parallel to the upper surface of the permanent magnet.

In another possible implementation, the permanent magnet is of an annular structure, and the central axis of the voice coil is coincident with the central axis of the permanent magnet.

In another possible implementation, the voice coil is arranged on the side surface of the cone, which faces the permanent magnet, and the cone covers the opening of the cone frame;

or the cone is of a plane annular structure, the outer periphery of the cone is connected with the cone frame, and the inner periphery of the cone is connected with the voice coil.

Based on the speaker that this application embodiment provided, through setting up the voice coil loudspeaker voice coil to plane, reduced the thickness of speaker greatly, realize the ultra-thin design of speaker.

Drawings

The drawings that accompany the detailed description can be briefly described as follows.

Fig. 1 is a schematic structural diagram of a conventional speaker;

fig. 2 is a schematic structural diagram of a speaker according to an embodiment of the present application;

fig. 3 is a top view of a voice coil of a speaker according to an embodiment of the present disclosure;

fig. 4 is a cross-sectional view of a voice coil of a speaker according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

In the description of the present application, the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application.

In the description of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection, a detachable connection, an interference connection, or an integral connection; the specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Fig. 2 is a schematic structural diagram of a speaker provided in an embodiment of the present application, and as shown in fig. 2, the speaker includes a frame 4, a permanent magnet 3 disposed in the frame 4, and a voice coil 11, where the voice coil 11 is disposed in a magnetic field generated by the permanent magnet 3 and is disposed in a planar shape. Compare the voice coil loudspeaker voice coil in traditional speaker and be the tubbiness setting, the voice coil loudspeaker voice coil of this application is plane, has reduced the thickness of speaker greatly, realizes the ultra-thin design of speaker.

Specifically, the voice coil 11 includes a conductive coil wound in a multi-layer ring structure, such as a multi-layer ring structure or a multi-layer rectangular ring structure, located on the same plane.

In one example, the conductive coil is an enameled wire coil, as shown in fig. 3-4, two adjacent layers of a multi-layer annular structure formed by winding the conductive coil are tightly attached, and the two adjacent layers of annular structures are fixedly connected through gluing to form a whole and have certain rigidity, so that the movement of the conductive coil drives the cone to vibrate and make sound. When the conductive coil is an enameled wire coil, the conductive coil can be wound to form a multilayer annular structure with two adjacent layers tightly attached. Because the enameled wire has certain rigidity, the multi-layer annular structure is cemented and fixed by the binder to form a whole with certain rigidity, and a voice coil framework is not needed, so that the voice coil structure is simpler and lighter, and the voice coil moves more sensitively.

In another example, the voice coil further comprises a voice coil support, the voice coil support is a flat plate-shaped base body with certain rigidity, the base body is provided with an annular convex structure, and the conductive coil is wound on the annular convex structure. The conductive coil can be made of any material, the problems of rigidity and insulativity are not needed to be considered, and the matrix provides rigidity required by the voice coil. In consideration of the weight of the voice coil, the base body can be made of a material with light weight and certain rigidity, for example, the base body can be made of a plastic flat plate, and the plastic flat plate can be easily provided with an annular protruding structure. The protruding height of the annular protruding structure does not need to be set too high, and only the conductive coil winding needs to be met, for example, the protruding height of the protruding structure is the diameter of the conductive coil.

In another example, the voice coil support may also be a multi-layer ring structure (similar to a clockwork spring structure) located in the same plane, and each layer of the multi-layer ring structure has a gap equal to or larger than the diameter of the conductive coil wound around the multi-layer ring structure. The material of the multilayer annular structure can be plastic, and the characteristics of rigidity, insulation and light weight are satisfied.

It should be noted here that the above-mentioned rigidity refers to a property that does not easily cause bending, buckling or flexure due to resonance, and does not mean complete rigidity.

The voice coil of the loudspeaker of the embodiment of the application is of the planar structure, and does not need to extend into the magnetic gap, so that the magnetic circuit system does not need to be provided with a magnetizer or a washer and the permanent magnet to form the magnetic gap. The magnetic circuit system only needs to be provided with the permanent magnet, the voice coil is arranged in the magnetic field generated by the permanent magnet, the magnetic field of the magnetic circuit system can generate acting force on the coil, the voice coil vibrates to drive the cone to vibrate, and the cone pushes air to make sound. Further reducing the overall thickness of the loudspeaker and simplifying the structure of the magnetic circuit system.

Continuing to refer to fig. 2, the permanent magnet 3 is disposed at the bottom of the frame 4, and the voice coil 11 is disposed directly above the permanent magnet and parallel to the upper surface of the permanent magnet 3, so that the magnetic field force applied to the voice coil is more stable.

In one example, the permanent magnet is of an annular structure, and the central axis of the voice coil is superposed with the central axis of the permanent magnet, so that the magnetic field force applied to the voice coil is consistent with the vibration direction of the voice coil.

With continued reference to fig. 2, the loudspeaker further comprises a cone 2, the cone 2 being arranged to cover the opening of the frame 4, and a voice coil 11 being arranged on the side of the cone 2 facing the permanent magnet 3. The voice coil is directly arranged on the cone, the cone is directly driven to vibrate by the voice coil, and the cone pushes air to make a sound. The direct power transmission of voice coil loudspeaker voice coil and cone does not have delay and no transmission loss, promotes speaker sound generating performance.

Specifically, the cone 2 is a cone with a planar structure, and the voice coil is integrally fixed on a side surface of the cone facing the permanent magnet, for example, the voice coil and the cone may be fixed by gluing. Compared with the cone-shaped cone of the existing loudspeaker, the cone-shaped cone adopting the planar structure further reduces the overall thickness of the loudspeaker.

In another example, the cone 2 may also be configured as a planar ring structure, an outer peripheral portion of the cone is connected to the cone frame, and an inner peripheral portion of the cone is connected to the voice coil, so that material usage of the cone is reduced.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

Finally, the description is as follows: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A loudspeaker, comprising:

a basin stand;

the permanent magnet is arranged inside the basin stand;

and the voice coil is arranged in a magnetic field generated by the permanent magnet, is planar and is connected with the basin frame.

2. The loudspeaker of claim 1, wherein the voice coil comprises a conductive coil wound in a multi-layered ring-like structure in the same plane.

3. The loudspeaker of claim 2, wherein the conductive coil is a wire-coated coil, and two adjacent layers of the multi-layer ring structures are closely attached and fixedly connected by gluing.

4. The loudspeaker of claim 2, wherein the voice coil further comprises a rigid voice coil support, the voice coil support is a multi-layer ring structure located in the same plane, gaps equal to or larger than the diameter of the conductive coil are formed between layers of the multi-layer ring structure, and the conductive coil is wound on the multi-layer ring structure.

5. The speaker of claim 2, wherein the voice coil further comprises a substrate, wherein an annular protrusion is disposed on the substrate, and the conductive coil is wound on the annular protrusion.

6. The loudspeaker of claim 1, wherein the permanent magnet is disposed at the bottom of the frame, and the voice coil is disposed directly above the permanent magnet and parallel to the upper surface of the permanent magnet.

7. The loudspeaker of claim 1, wherein the permanent magnet is an annular structure, and the central axis of the voice coil is coincident with the central axis of the permanent magnet.

8. The loudspeaker of claim 1, further comprising a cone disposed over the opening of the frame, the voice coil being disposed on a side of the cone facing the permanent magnet;