CN210075576U

CN210075576U - Voice coil structure and loudspeaker

Info

Publication number: CN210075576U
Application number: CN201921484636.2U
Authority: CN
Inventors: 赵福彬; 袁志芳
Original assignee: TCL Technology Electronics Huizhou Co Ltd
Current assignee: TCL Technology Electronics Huizhou Co Ltd
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2020-02-14
Anticipated expiration: 2029-09-05

Abstract

The utility model discloses a voice coil loudspeaker voice coil structure and speaker, wherein the speaker is applied to the voice coil loudspeaker voice coil structure, the voice coil loudspeaker voice coil structure includes: the sound cavity comprises a framework, a sound cavity body and a sound cavity body, wherein the framework is arranged in an annular shape, at least one reinforcing sheet is arranged on the inner wall of the framework, and at least two sound cavities are formed by the at least one reinforcing sheet and the inner wall of the framework in a surrounding mode; and each coil is attached to the inner peripheral wall of each sound cavity. The utility model provides a voice coil loudspeaker voice coil structure can possess longer life to can improve the sensitivity of speaker.

Description

Voice coil structure and loudspeaker

Technical Field

The utility model relates to an audio equipment technical field, in particular to voice coil loudspeaker voice coil structure and speaker.

Background

The voice coil of the conventional loudspeaker cannot be made very long, otherwise the voice coil is easy to deform when moving to influence the sound production of the loudspeaker. If the voice coil is short, the magnetic circuit structure of the speaker matched with the voice coil is small, and the sensitivity of the speaker is low.

In addition, the coil on the voice coil is generally wound on the framework, when the loudspeaker works, the coil generates heat and expands, the adhesion degree of the coil and the framework is reduced, the coil may rub against a magnetic circuit structure of the loudspeaker, the coil may be burned out due to local short circuit, and the coil may also be broken due to direct collision with the magnetic circuit structure of the loudspeaker.

The above is only for the purpose of assisting understanding of the technical solutions of the present application, and does not represent an admission that the above is prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a voice coil loudspeaker voice coil structure aims at improving the sensitivity of speaker and the life who promotes the voice coil loudspeaker voice coil structure.

In order to achieve the above object, the utility model provides a voice coil structure is applied to the speaker, the voice coil structure includes:

the sound cavity comprises a framework, a sound cavity body and a sound cavity body, wherein the framework is arranged in an annular shape, at least one reinforcing sheet is arranged on the inner wall of the framework, and at least two sound cavities are formed by the at least one reinforcing sheet and the inner wall of the framework in a surrounding mode; and

and each coil is attached to the inner peripheral wall of each sound cavity.

In an embodiment of the present invention, the inner wall of the framework is provided with a plurality of reinforcing pieces arranged at intervals, and the plurality of reinforcing pieces are arranged in parallel;

or the inner wall of the framework is provided with two reinforcing pieces, and the two reinforcing pieces are perpendicular and intersected.

Furthermore, the utility model also provides a loudspeaker, include:

a support frame;

the magnetic circuit assembly is arranged on one side of the support frame and forms an installation cavity with the support frame in an enclosing mode; and

the voice coil structure is arranged in the mounting cavity, and the framework is abutted to the magnetic circuit assembly.

In an embodiment of the present invention, the magnetic circuit assembly includes:

the magnetic conduction block is arranged on one side of the bracket frame, an accommodating groove is formed in the magnetic conduction block, and the inner wall of the accommodating groove and the inner side wall of the bracket enclose to form the mounting cavity; and

the at least two magnets are arranged on the bottom wall of the accommodating groove at intervals, and a limiting gap is formed between the two magnets and the side wall of the accommodating groove; one end of the framework is accommodated and limited in the limiting gap, and each magnet is accommodated and limited in each sound cavity.

In an embodiment of the present invention, the support frame is provided with a plurality of airflow holes communicating with the mounting cavity, and the airflow holes are arranged at intervals.

In an embodiment of the present invention, the speaker further includes two connection terminals;

at least two the coil electricity is connected, two binding post with at least two the coil electricity is connected.

In an embodiment of the present invention, the opposite ends of the support frame are provided with protrusions, and each protrusion is formed with a limiting groove;

each wiring terminal is at least partially accommodated and limited in one limiting groove.

In an embodiment of the present invention, the two opposite side walls of the limiting groove are convexly provided with a clamping portion;

binding post corresponds joint portion is equipped with hook portion, binding post passes through hook portion with the joint cooperation of joint portion at least part hold and spacing in spacing inslot.

The utility model discloses an in one embodiment, the speaker still includes the vibrating diaphragm, the vibrating diaphragm is located the support frame dorsad one side of magnetic circuit assembly, and cover the opening of support frame, the vibrating diaphragm with the skeleton is kept away from magnetic circuit assembly's one end butt.

In an embodiment of the present invention, two limiting blocks are oppositely disposed on the support frame adjacent to the vibrating diaphragm;

the loudspeaker further comprises fixing rings surrounding the periphery of the vibrating diaphragm, and the fixing rings are limited between the two limiting blocks and connected with the support frame.

The utility model discloses technical scheme supports and strengthens the skeleton of voice coil loudspeaker voice coil through setting up the enhancement piece on the inner wall of voice coil loudspeaker voice coil skeleton, is favorable to promoting the structural stability of voice coil loudspeaker voice coil skeleton, makes the skeleton be difficult for warping when the motion, also makes the skeleton of voice coil loudspeaker voice coil design longer, is favorable to promoting the sensitivity of speaker. Simultaneously, the reinforcing plate encloses with the skeleton and closes and form two at least sound chambeies, through the mode with the coil laminating in the internal perisporium coiling in sound chamber, makes the skeleton can tie the inflation of coil, when avoiding the voice coil loudspeaker voice coil to generate heat and expand, rubs and damages with the magnetic circuit structure sound production of speaker, is favorable to promoting the life of voice coil loudspeaker voice coil structure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a voice coil structure according to the present invention;

fig. 2 is a schematic structural view of the speaker of the present invention at a viewing angle;

fig. 3 is a schematic structural view of the speaker of the present invention at another viewing angle;

fig. 4 is a cross-sectional structural view of the speaker of the present invention;

fig. 5 is an exploded schematic view of the speaker of the present invention;

FIG. 6 is an enlarged view of portion A of FIG. 5;

fig. 7 is a schematic structural view of the voice coil structure and the magnetic circuit assembly of the present invention;

fig. 8 is an exploded view of fig. 7.

The reference numbers illustrate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

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 only some embodiments of the present invention, not all embodiments. 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.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout this document, "and/or" is meant to include three juxtaposed cases, exemplified by "A and/or B," including case A, case B, or cases where both case A and case B are satisfied. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a voice coil loudspeaker voice coil structure is applied to the speaker.

In the embodiment of the present invention, as shown in fig. 1, the voice coil structure includes: the sound cavity comprises a framework 1, at least one reinforcing sheet 11 and at least two sound cavities 12, wherein the framework 1 is arranged in an annular shape, the inner wall of the framework 1 is provided with the at least one reinforcing sheet 11, and the at least one reinforcing sheet 11 and the inner wall of the framework 1 enclose to form at least two sound cavities 12; and at least two coils 2, each coil 2 is attached to the inner peripheral wall of each sound cavity 12.

In this embodiment, the bobbin 1 is a voice coil bobbin used in a common speaker, and is made of kraft paper, asbestos paper, or the like, and has high rigidity and supporting strength. The framework 1 is arranged in an annular shape and is provided with a hollow cavity, the framework 1 can be formed by bonding the flaky base materials end to end, and the cross section of the framework can be waist-shaped, circular and the like.

The material of the reinforcing plate 11 can be various, such as metal aluminum, metal alloy, plastic, etc.; the shape of the reinforcing sheet 11 may be various, such as square, diamond, etc. Both ends of each reinforcing sheet 11 are all connected in the inner wall of skeleton 1 to separate the cavity of skeleton 1 into a plurality of cavities, or, at least one reinforcing sheet 11 encloses with skeleton 1 and closes and form two at least sound chambeies 12, and this sound chamber 12 is used for holding and coiling coil 2.

Coil 2's material can be copper metal, and coil 2 surface can coat the viscose, through with 2 laminating of coil and coiling at the inside wall of sound chamber 12, makes coil 2 pass through the inside wall bonding of viscose and voice coil loudspeaker voice coil to through the mode stoving viscose of toasting, make coil 2 further firmly bond in the inner wall of sound chamber 12. Of course, a plurality of coils 2 can be wound around the inner wall of the sound cavity 12, and the plurality of coils 2 can be distributed on the inner wall of the sound cavity 12 in a track manner, so as to improve the stability and sensitivity of the voice coil vibrating in the loudspeaker.

This embodiment scheme is through setting up on voice coil skeleton 1's inner wall and strengthening piece 11, supports and strengthens the skeleton 1 of voice coil loudspeaker voice coil, is favorable to promoting voice coil skeleton 1's structural stability, makes skeleton 1 be difficult for warping when the motion, also makes the skeleton 1 of voice coil loudspeaker voice coil can design comparatively long, is favorable to promoting the sensitivity of speaker. Simultaneously, the reinforcing plate 11 encloses with skeleton 1 and closes and form two at least sound chambeies 12, through the mode of laminating coil 2 in the internal perisporium coiling of sound chamber 12, makes skeleton 1 can tie coil 2's inflation, when avoiding the voice coil loudspeaker voice coil to generate heat and expand, rubs and damages with the magnetic circuit structure sound production of speaker, is favorable to promoting the life of voice coil loudspeaker voice coil structure.

In an embodiment of the present invention, the inner wall of the framework 1 is provided with a plurality of reinforcing pieces 11 arranged at intervals, and the plurality of reinforcing pieces 11 are arranged in parallel; or, the inner wall of the framework 1 is provided with two reinforcing sheets 11, and the two reinforcing sheets 11 are arranged perpendicularly and in an intersecting manner.

In this embodiment, the number of the reinforcing pieces 11 may be multiple, and the reinforcing pieces 11 may be arranged in a manner that the plurality of reinforcing pieces 11 are arranged in parallel, or the plurality of reinforcing pieces 11 are arranged at intervals but not in parallel, or only two reinforcing pieces 11 are arranged, and the two reinforcing pieces 11 are arranged perpendicularly and in an intersecting manner.

The setting of a plurality of reinforcing pieces 11 can support skeleton 1 more reliably, promotes skeleton 1's structural strength, makes skeleton 1 non-deformable, especially when designing skeleton 1 for a relatively long time, more is favorable to maintaining the stable in shape when skeleton 1 moves.

The utility model discloses still propose a speaker, refer to fig. 2 to combine to show in fig. 3 and fig. 4, this speaker includes: a support frame 3; the magnetic circuit component 4 is arranged on one side of the support frame 3 and forms an installation cavity 5 with the support frame 3 in an enclosing manner; and the voice coil structure in the above embodiment, which is arranged in the mounting cavity 5, and the framework 1 is abutted with the magnetic circuit assembly 4. The specific structure of the voice coil structure refers to the above embodiments, and since the speaker adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and are not repeated here.

In the present embodiment, the holder frame 3 is shaped like a frame, that is, the holder frame 3 is formed with a hollow cavity. The material of support frame 3 can be the plastic material to guarantee that support frame 3 has under the prerequisite of sufficient rigidity, lighten the weight of support frame 3 and this speaker as far as possible, so that the removal of this speaker and the installation in the equipment such as stereo set.

Magnetic circuit component 4 sets up in the opening part of support frame 3 to cover the opening of support frame 3, magnetic circuit component 4 still with the inner wall connection of support frame 3, in order to enclose with support frame 3 and close formation installation cavity 5. The magnetic circuit assembly 4 is used for providing a stable magnetic field for the voice coil structure, so that when the coil 2 of the voice coil structure is electrified, the framework 1 and the coil 2 can move under the action of the magnetic force of the magnetic circuit assembly 4. The magnetic circuit assembly 4 comprises a magnetic part and a structural part for fixing the magnetic part, the magnetic part is positioned in the sound cavity 12, and when the coil 2 is electrified, the coil 2 can move relative to the magnetic part under the action of the magnetic field force of the magnetic part and drive the framework 1 to move.

In an embodiment of the present invention, referring to fig. 5 in combination with fig. 7 and 8, the magnetic circuit assembly 4 includes: the magnetic conduction block 41 is arranged on one side of the support frame 3, the magnetic conduction block 41 is provided with an accommodating groove 411, and the inner wall of the accommodating groove 411 and the inner side wall of the support frame are enclosed to form an installation cavity 5; and at least two magnets 42, the at least two magnets 42 are arranged on the bottom wall of the accommodating groove 411 at intervals, and a limiting gap 4111 is formed between the two magnets 42 and the side wall of the accommodating groove 411; one end of the frame 1 is received and retained in the retaining gap 4111, and each magnet 42 is received and retained in each sound cavity 12.

In this embodiment, the magnetic conductive block 41 may be U-shaped iron, which functions similar to T-shaped iron in a common speaker, i.e. is used for fixing the magnet 42, and also has the function of magnetic conduction. The material of the magnetic conductive block 41 may be a metal magnetic conductor, an accommodating groove 411 is formed on one side of the magnetic conductive block 41 facing the voice coil structure, and one end of the bobbin 1 is accommodated in the accommodating groove 411.

The magnet 42 includes a magnet and a washer, the shape and size of the magnet 42 are adapted to the shape and size of the sound cavity 12, for example, when the cross-sectional shape of the sound cavity 12 is a kidney shape, the cross-sectional shape of the magnet 42 is also a kidney shape, and the magnet 42 can be accommodated in the sound cavity 12. At least two magnets 42 are disposed on the bottom wall of the accommodating slot 411, and a space is provided between two adjacent magnets 42, and the reinforcing sheet 11 is avoided through the space, that is, each reinforcing sheet 11 is limited between every two adjacent magnets 42. Magnet 42 still has the interval with the lateral wall time of holding tank 411, in order to form spacing clearance 4111 of the spacing skeleton 1 tip, the one end of skeleton 1 holds and spacing in spacing clearance 4111, during the motion of skeleton 1, skeleton 1 moves for magnet 42 and magnetizer 42, the one end of skeleton 1 is spacing in spacing clearance 4111 all the time, magnet 42 at least part holds in sound chamber 12, in order to lead and restrict the motion of skeleton 1 through the lateral wall of magnet 42 and holding tank 411, be favorable to promoting voice coil structure and magnetic circuit component 4 complex compactness, guarantee the sound quality of speaker.

In an embodiment of the present invention, referring to fig. 2 and combining with fig. 3, the support frame 3 is provided with a plurality of airflow holes 31 communicating with the installation cavity 5, and the airflow holes 31 are arranged at intervals.

In the present embodiment, the shape of the airflow hole 31 may be various, such as a circle, a square, and the like. Installation cavity 5 passes through air current hole 31 and external intercommunication, skeleton 1 is when 5 internal motion in installation cavity, it flows to cause vibration and air current in installation cavity 5, make the air current in the installation cavity 5 can circulate the external world through air current hole 31, be favorable to reducing the motion damping of skeleton 1, and can be through the convection current of the air in installation cavity 5 and outside air, with the outside external conduction of air vibration in the installation cavity, realize more ideal sound production effect, be favorable to promoting the frequency response quality of speaker.

In an embodiment of the present invention, referring to fig. 5 in combination with fig. 2 and 3, the speaker further includes two connection terminals 6; at least two coils 2 are electrically connected, and two connection terminals 6 are electrically connected to the at least two coils 2.

In this embodiment, the material of the connection terminal 6 is conductive metal or metal alloy, the connection terminal 6 is used for an external power supply, and the two connection terminals 6 are respectively connected to the positive electrode and the negative electrode of the power supply so as to transmit the electric energy of the power supply to the at least two coils 2, so that the at least two coils 2 can move under the action of the magnetic field force of the magnetic circuit assembly 4.

At least two coils 2 can be electrically connected through a conducting wire, the conducting wire can also be a part of outgoing lines of the coils 2, and the at least two coils 2 can be electrically connected in series or in parallel, so that the at least two coils 2 can be simultaneously powered by a power supply through the two connecting terminals 6 and keep synchronous movement under the action of the magnetic field force of the magnetic circuit assembly 4.

In other embodiments, the speaker includes a plurality of terminals 6, the coils 2 are independent from each other without connection, each coil 2 is electrically connected to two terminals 6, and the two terminals 6 connected to the same coil 2 are respectively connected to the positive and negative electrodes of the external power source, so that each coil 2 is independently powered.

In an embodiment of the present invention, referring to fig. 6 and combining with fig. 5, the opposite ends of the support frame 3 are provided with protrusions 32, and each protrusion 32 is formed with a limiting groove 321; each terminal 6 is at least partially received and retained in a retaining groove 321.

In this embodiment, the protruding portion 32 may be made of various materials, such as plastic, metal, etc., the protruding portion 32 may be integrally formed with the bracket frame 3, or the protruding portion 32 may be separately formed and then connected to the bracket frame 3 by bonding, welding, etc. The shape of the convex portion 32 is not limited, and may be a block shape, a plate shape, or the like.

Binding post 6 can with the inner wall interference fit of spacing groove 321, also can connect in the inner wall of spacing groove 321 through modes such as grafting, joint to make binding post 6 be fixed in on the support frame 3, be convenient for binding post 6 external power supply.

In an embodiment of the present invention, referring to fig. 6 and with reference to fig. 5, two opposite sidewalls of the limiting groove 321 are convexly provided with a clamping portion (not shown); binding post 6 corresponds joint portion and is equipped with hook portion 61, and binding post 6 partly holds and is spacing in spacing groove 321 through the joint cooperation of hook portion 61 and joint portion at least.

In this embodiment, the connection terminal 6 is connected to the inner sidewall of the limiting groove 321 through the clamping fit of the clamping portion 61 and the clamping portion, so that the connection terminal 6 is reliably accommodated and limited in the limiting groove 321. The engaging portion can be a protrusion structure, and the hook portion 61 is a hook structure matching with the protrusion structure, so that the hook portion 61 can be engaged with the engaging portion. Of course, the engaging portion may also be an opening structure, and the hook portion 61 is a hook structure matching with the opening structure, so that the hook portion 61 can be engaged with the engaging portion.

In an embodiment of the present invention, referring to fig. 5, and shown in fig. 2 and fig. 4, the speaker further includes a vibrating diaphragm 7, the vibrating diaphragm 7 is disposed on one side of the support frame 3 facing away from the magnetic circuit assembly 4, and covers the opening of the support frame 3, and the vibrating diaphragm 7 and the framework 1 are abutted against one end of the magnetic circuit assembly 4.

In the present embodiment, the diaphragm 7 is shaped like a sheet, and the material of the diaphragm 7 may be various, such as polyester, bio-fiber, and the like. The diaphragm 7 covers the opening of the support frame 3 and covers the opening of the support frame 3. When the framework 1 moves, the framework 1 drives the vibrating diaphragm 7 to move, and the vibrating diaphragm 7 is caused to vibrate and sound.

In an embodiment of the present invention, referring to fig. 5 in combination with fig. 2 and 4, two limiting blocks 33 are disposed on the support frame 3 adjacent to the diaphragm 7; the loudspeaker further comprises a fixing ring 8 surrounding the periphery of the diaphragm 7, and the fixing ring 8 is limited between the two limiting blocks 33 and connected with the support frame 3.

In this embodiment, the fixing ring 8 may be made of various materials such as plastic, metal alloy, etc., the diaphragm 7 may be connected to the fixing ring 8 by bonding, and the fixing ring 8 is used to support the diaphragm 7, so that the diaphragm 7 can be fully extended to increase the rigidity of the diaphragm 7.

The material of stopper 33 can be multiple, for example plastic, metal etc. stopper 33 can set up with support frame 3 integrated into one piece, and stopper 33 also can be connected in support frame 3 through modes such as bonding, welding after the independent molding. The shape of the limiting block 33 is not limited, and can be a long strip, a square, a trapezoid, etc. Stopper 33 is used for spacing solid fixed ring 8, makes solid fixed ring 8 be located between two stoppers 33, will gu fixed ring 8 bonds with support frame 3 again, guarantees vibrating diaphragm 7 and skeleton 1 accurate counterpoint. And after this speaker is installed on audio equipment, also can carry out more reliable spacing to solid fixed ring 8 and vibrating diaphragm 7 through the cooperation of audio equipment's shell and stopper 33. Therefore, the vibration of the framework 1 can be effectively converted into the vibration of the vibrating diaphragm 7 in time, and the sound production quality of the loudspeaker is improved.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A voice coil structure applied to a loudspeaker, the voice coil structure comprising:

and each coil is attached to the inner peripheral wall of each sound cavity.

2. The voice coil structure of claim 1, wherein the inner wall of the bobbin is provided with a plurality of spaced-apart reinforcing ribs, the plurality of reinforcing ribs being arranged in parallel;

3. A loudspeaker, comprising:

a support frame;

the voice coil structure according to claim 1 or 2, provided in the mounting chamber, wherein the bobbin abuts against the magnetic circuit assembly.

4. A loudspeaker according to claim 3, wherein the magnetic circuit assembly comprises:

5. The loudspeaker of claim 3, wherein the frame defines a plurality of airflow openings in communication with the mounting cavity, the plurality of airflow openings being spaced apart from one another.

6. The speaker of claim 3, wherein the speaker further comprises two terminals;

7. The speaker as claimed in claim 6, wherein the bracket frame is provided at opposite ends thereof with protrusions each formed with a stopper groove;

8. The loudspeaker of claim 7, wherein the opposite side walls of the limiting groove are convexly provided with clamping parts;

9. The loudspeaker of claim 3, further comprising a diaphragm, wherein the diaphragm is disposed on a side of the support frame facing away from the magnetic circuit assembly and covers the opening of the support frame, and the diaphragm abuts against an end of the framework away from the magnetic circuit assembly.

10. The loudspeaker of claim 9, wherein the support frame is provided with two stop blocks disposed opposite to each other adjacent to the diaphragm;