CN209017299U

CN209017299U - Loudspeaker

Info

Publication number: CN209017299U
Application number: CN201822151698.3U
Authority: CN
Inventors: 赵越; 王建建; 张成飞
Original assignee: Goertek Techology Co Ltd
Current assignee: Goertek Techology Co Ltd
Priority date: 2018-12-20
Filing date: 2018-12-20
Publication date: 2019-06-21
Anticipated expiration: 2028-12-20

Abstract

The utility model discloses a kind of loudspeaker, including vibrational system and the centring disk flexibly supported to vibrational system, vibrational system includes vibrating diaphragm and Voice coil assemblies, centring disk is equipped with the interior pad and outer pad of electrical connection, it is characterized in that, Voice coil assemblies include: the first voice coil, and first to be connected including the first noumenon and with the first noumenon enters line and the first outlet；And second voice coil, including the second ontology and what is be connected with the second ontology second enter line and the second outlet, the second ontology and the first noumenon setting stacked on top of one another；Wherein, centring disk includes interior fixed part, outer fixing portion and the deformations being connected between interior fixed part and outer fixing portion, the connection of the lower end of interior fixed part and Voice coil assemblies, interior fixed part is equipped with several interior pads, and first enters line, the first outlet, second enters line and the second outlet is connected electrically on interior pad.Technical solutions of the utility model can improve the acoustical behavior of loudspeaker.

Description

Loudspeaker

Technical Field

The utility model relates to a speaker product technical field, in particular to speaker.

Background

The miniature electroacoustic device is widely applied to portable electronic equipment such as mobile phones, notebook computers, hearing aids and the like. With the rapid development of these portable electronic devices, there is an increasing demand for miniature electro-acoustic devices to be used therein. The voice coil is used as a moving part of the miniature sound production device, when alternating audio current passes through the voice coil, the voice coil generates a magnetic field which changes along with the change of the audio current, and the changed magnetic field and the magnetic field of a magnetic circuit system of the miniature electroacoustic device are attracted or repelled to cause the voice coil to generate mechanical vibration so as to drive a vibrating diaphragm of the miniature electroacoustic device to vibrate, the vibrating diaphragm vibrates to push air repeatedly to produce sound, so that the voice coil influences the performance of the whole miniature electroacoustic device.

The traditional voice coil is usually formed in a single integral mode, ideally, the voice coil should repeatedly vibrate at a preset position, but in actual work, the voice coil deviates from the preset setting in the vibration process, the magnetic field intensity passing through the voice coil changes after deviating from the preset position, and the deviation of the position is difficult to monitor, namely, cannot be corrected, so that the vibration of the voice coil is unstable, and the vibration of a vibrating diaphragm is unstable; in addition, the traditional voice coil is provided with two leads, namely an incoming line and an outgoing line, the incoming line and the outgoing line are arranged in a suspended mode and are electrically connected with the shell, and in the process of up-and-down vibration of the voice coil, the leads easily generate pulling force on a vibration system to cause a polarization phenomenon; both of the above two cases will have a great influence on the overall acoustic performance of the electroacoustic device.

SUMMERY OF THE UTILITY MODEL

The main objective of the present invention is to provide a speaker, which aims to solve the technical problem of how to improve the acoustic performance of the speaker.

In order to achieve the above object, the utility model provides a loudspeaker, it is right including vibration system carries out elastic support's centering piece, vibration system includes vibrating diaphragm and voice coil assembly, be equipped with the interior pad and the outer pad of electricity connection on the centering piece, its characterized in that, the voice coil assembly includes:

the first voice coil comprises a first body, a first incoming line and a first outgoing line, wherein the first incoming line and the first outgoing line are connected with the first body; and

the second voice coil comprises a second body, a second incoming line and a second outgoing line, wherein the second incoming line and the second outgoing line are connected with the second body; wherein,

the centering support piece comprises an inner fixing part, an outer fixing part and a deformation part connected between the inner fixing part and the outer fixing part, the inner fixing part is connected with the lower end part of the voice coil assembly, the inner fixing part is provided with a plurality of inner bonding pads, and the first wire inlet, the first wire outlet, the second wire inlet and the second wire outlet are electrically connected to the inner bonding pads.

Optionally, the lower end surface or the lower end side surface of the voice coil assembly is connected with the inner fixing portion of the centering support.

Optionally, four inner pads are arranged on the inner fixing portion, four outer pads electrically connected with the four inner pads in a one-to-one correspondence are arranged on the outer fixing portion, and the first incoming line, the first outgoing line, the second incoming line and the second outgoing line are electrically connected with the four inner pads respectively.

Optionally, the centering branch piece includes a first centering branch piece and a second centering branch piece, and the first centering branch piece and the second centering branch piece are respectively connected to two short sides of the voice coil assembly;

or the first centering branch piece and the second centering branch piece are respectively connected to the two long sides of the voice coil assembly.

Optionally, the first body and the second body are rectangular ring structures, the first body and the second body have four corners, and the first incoming line, the first outgoing line, the second incoming line and the second outgoing line are respectively led out from the four corners.

Optionally, the first incoming line and the first outgoing line are led out from two adjacent corner positions; or,

the first incoming line and the first outgoing line are led out from two opposite diagonal positions.

Optionally, first centering branch piece includes first interior fixed part, first outer fixed part and first deformation portion, second centering branch piece includes second interior fixed part, the outer fixed part of second and second deformation portion be equipped with two first interior pads on the both ends outward flange of first interior fixed part be equipped with two second interior pads on the both ends outward flange of fixed part in the second, first income line, first being qualified for the next round of competitions, second income line and second are qualified for the next round of competitions and are connected electrically respectively on two first interior pads and two second interior pads.

Optionally, the first voice coil and the second voice coil are bonded through glue; or

The first body and the second body are formed by winding enamelled wires, self-adhesive paint is coated on the surfaces of the enamelled wires, and the first body and the second body are bonded together through the self-adhesive paint on the adjacent enamelled wires.

Optionally, the first incoming line and the first outgoing line are connected to one side of the first body, which is away from the second body, and the second incoming line and the second outgoing line are connected to one side of the second body, which is away from the first body.

Optionally, the first voice coil and the second voice coil are connected in series.

The technical scheme of the utility model with the voice coil loudspeaker voice coil subassembly of speaker, set up to interconnect's first voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil, with the voltage difference through detecting first voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil junction, calculate and correct the vibrations position of voice coil loudspeaker voice coil subassembly often, with the stability of reinforcing vibrating diaphragm vibration, moreover, introduce the centering piece with elastic support whole vibration system, should center the piece outside and shell electricity is connected, inboard and each lead wire electricity of voice coil loudspeaker voice coil subassembly is connected, and can accompany the vibration system motion, with effectively eliminating the lead wire to the power of dragging of vibration system, avoid the voice coil loudspeaker voice coil subassembly polarization condition to appear, can know from this, the technical scheme of the utility model can effectively improve the whole acoustic performance of speaker.

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 an exploded view of an embodiment of the speaker of the present invention;

FIG. 2 is a schematic view of the voice coil assembly of FIG. 1;

FIG. 3 is a schematic diagram of the first voice coil in FIG. 2;

FIG. 4 is a schematic diagram of a second voice coil of FIG. 2;

FIG. 5 is a schematic view of the structure of the centering disk of FIG. 1;

fig. 6 is a schematic structural view of the voice coil assembly of fig. 1 mounted in the accommodating chamber.

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, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications 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 indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. 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 loudspeaker.

In the embodiment of the utility model, referring to fig. 1 to 6, this speaker includes vibration system and the centering piece 8 that carries out elastic support to vibration system, and vibration system includes vibrating diaphragm 1 and voice coil assembly 2, is equipped with the interior pad and the outer pad of electricity connection on the centering piece 8, and its characterized in that, this voice coil assembly 2 includes:

a first voice coil 21 including a first body 211, and a first incoming line 212 and a first outgoing line 213 connected to the first body 211; and

a second voice coil 22 including a second body 221, and a second incoming line 222 and a second outgoing line 223 connected to the second body 221, wherein the second body 221 and the first body 211 are stacked up and down; wherein,

the centering branch piece 8 comprises an inner fixing part, an outer fixing part and a deformation part connected between the inner fixing part and the outer fixing part, the inner fixing part is connected with the lower end part of the voice coil assembly 2, a plurality of inner bonding pads are arranged on the inner fixing part, and the first incoming line 212, the first outgoing line 213, the second incoming line 222 and the second outgoing line 223 are electrically connected to the inner bonding pads.

Referring to fig. 1, it will be appreciated that a loudspeaker generally comprises a housing 3, a vibration system and a magnetic circuit system, wherein, the shell 3 is enclosed to form an accommodating cavity, the magnetic circuit system and the vibration system are arranged in the accommodating cavity, the magnetic circuit system comprises a magnetic guide yoke 7, a central magnet 5 and a side magnet 6 which are arranged on the magnetic guide yoke 7, a central magnetic conductive plate 4 arranged on the central magnet 5 and a side magnetic conductive plate arranged on the side magnet 6, wherein, the limit magnetic conduction plate is moulded plastics on shell 3 in this embodiment, forms the magnetic flux clearance between central magnet 5, central magnetic conduction plate 4 and limit magnet 6, the limit magnetic conduction plate, and vibration system includes vibrating diaphragm 1 and voice coil assembly 2, and voice coil assembly 2 encircles and locates the magnetic flux clearance, and vibrating diaphragm 1 connects in the one end of voice coil assembly 2, and the opposite side of vibrating diaphragm 1 still can set up reinforcement portion 11 to reduce vibration system's quality, adjust whole acoustic performance. In the course of the work of speaker, produce magnetic field in the magnetic flux clearance, voice coil assembly 2 circular telegram, and voice coil assembly 2 of circular telegram can receive the effect of ampere's power and produce the vibration in magnetic field, and voice coil assembly 2 of vibration can drive vibrating diaphragm 1 and vibrate together to make vibrating diaphragm 1 plan the air sound production. The voice coil assembly 2 is usually formed by winding a conductive metal wire, and after the voice coil is wound, a ring-shaped body and a lead wire connected to the outer peripheral surface of the body are usually formed.

Referring to fig. 2 to 4, it is easily understood that, for the voice coil assembly 2, it is necessary to have two mutually perpendicular dimensions, namely, a length direction (long side direction) and a width direction (short side direction), and it should be noted that, when the two mutually perpendicular dimensions of the voice coil assembly 2 are equal, the definitions of the length direction and the width direction still apply. In this embodiment, the first voice coil 21 and the second voice coil 22 are disposed in a rectangular frame shape with the same size, but they are not in a standard rectangular shape, and are disposed in a smooth transition at their respective corners, so as to reduce the probability of the voice coils colliding with the outside and being damaged. It should be noted that the design is not limited to this, and in other embodiments, the first voice coil 21 and the second voice coil 22 may also be disposed in other shapes that are consistent with each other.

For example, but not limited to, in the present embodiment, the first voice coil 21 and the second voice coil 22 are bonded by glue. In this embodiment, the opposite sides of the first voice coil 21 and the second voice coil 22 are connected and then bonded by glue, so that the first voice coil 21 and the second voice coil 22 are stably connected in a simple and convenient manner. It is understood that the glue should not affect the current flowing between the first voice coil 21 and the second voice coil 22, so as to realize the electrical series connection of the first voice coil 21 and the second voice coil 22. It should be noted that the design is not limited thereto, and in other embodiments, the first body 211 and the second body 221 are formed by winding enameled wires, the surfaces of the enameled wires are coated with self-adhesive paint, and the first body 211 and the second body 221 are bonded together by the self-adhesive paint on the adjacent enameled wires.

To in the speaker working process, the voice coil loudspeaker voice coil can deviate the condition of preset position vibration, so that vibrating diaphragm 1 vibrates the unstable condition, the technical scheme of the utility model is through being connected first voice coil loudspeaker voice coil 21 and second voice coil loudspeaker voice coil 22, make in the in-process of voice coil loudspeaker voice coil subassembly 2 work, first voice coil loudspeaker voice coil 21 and second voice coil loudspeaker voice coil 22 are because the position in magnetic field is different, consequently, the magnetic induction intensity that passes first voice coil loudspeaker voice coil 21 and second voice coil loudspeaker voice coil 22 is also different, thereby the induced electricity electromotive force that first voice coil loudspeaker voice coil 21 and second voice coil loudspeaker voice coil 22 produced is also different, through the voltage difference that detects first voice coil loudspeaker voice coil 21 and second voice coil loudspeaker voice coil 22 junction, can calculate out the relative position of first voice coil loudspeaker voice coil 21 and second voice coil loudspeaker voice coil 22 in magnetic field in real time. If voice coil assembly 2 is at the skew default position of vibration in-process, then the position of first voice coil 21 and second voice coil 22 all can change, the magnetic induction intensity that passes first voice coil 21 and second voice coil 22 this moment also can change, thereby the induced electromotive force that first voice coil 21 and second voice coil 22 produced also can change, namely the voltage difference of first voice coil 21 and second voice coil 22 junction changes, can obtain the holistic skew of voice coil assembly 2 through the change that detects the voltage difference, thereby accessible external input offset current's mode makes voice coil assembly 2 return to default position, the realization is to the correction of voice coil assembly 2 position, so that the vibration of voice coil assembly 2 in magnetic field is more stable, thereby make the vibration of vibrating diaphragm 1 also more stable, effectively improve the whole acoustic performance of speaker.

In addition, for the situation that the lead generates a dragging force on the vibration system so that the voice coil is easy to polarize, the invention introduces the centering support 8 for elastically supporting the vibration system, the outer fixing part of the centering support 8 is provided with an outer bonding pad electrically connected with the shell 3, the inner fixing part is provided with a plurality of inner bonding pads electrically connected with the lead, and the inner fixing part and the outer fixing part are connected through the deformation part.

The technical scheme of the utility model with the voice coil loudspeaker voice coil subassembly 2 set up to interconnect's first voice coil loudspeaker voice coil 21 and second voice coil loudspeaker voice coil 22, with the voltage difference through detecting first voice coil loudspeaker voice coil 21 and second voice coil loudspeaker voice coil 22 junction, calculate and correct the vibrations position of voice coil loudspeaker voice coil subassembly 2 often, with the stability of reinforcing vibrating diaphragm 1 vibration, and, introduce centering disk 8 with the whole vibration system of elastic support, this centering disk 8 outside is connected with 3 electricity on the shell, inboard is connected with each lead wire electricity of voice coil loudspeaker voice coil subassembly 2, and can accompany the vibration system motion, with effectively eliminating the lead wire to the power of dragging of vibration system, avoid voice coil loudspeaker voice coil subassembly 2 to appear the polarization condition, can know from this, the technical scheme of the utility model can effectively improve the whole acoustic performance of speaker.

Further, the lower end surface or the lower end side surface of the voice coil block 2 is connected to the inner fixing portion of the damper 8. It can be understood that so set up, when the force is dragged to the lead wire is eliminated to centering support 8, can also play the effect of supporting voice coil loudspeaker voice coil subassembly 2, effectively improves the convenience and the reliability of voice coil loudspeaker voice coil subassembly 2 installation.

Further, the first incoming line 212 and the first outgoing line 213 are connected to a side of the first body 211 away from the second body 221, and the second incoming line 222 and the second outgoing line 223 are connected to a side of the second body 221 away from the first body 211. It will be appreciated that this arrangement minimizes the lead-in and lead-out wires from interfering with the connection between the first body 211 and the second body 221. It should be noted that, in other embodiments, at least one of the first lead 211 and the second lead 221 is led out from a side where the first body 211 and the second body 221 face each other, and the design is not limited thereto.

Furthermore, four inner pads are arranged on the inner fixing portion, four outer pads electrically connected with the four inner pads in a one-to-one correspondence are arranged on the outer fixing portion, and the first incoming line 212, the first outgoing line 213, the second incoming line 222 and the second outgoing line 223 are electrically connected with the four inner pads respectively. It can be understood that the inner bonding pads are respectively arranged corresponding to the leads, which is beneficial to avoiding the situation of series flow among the leads, and the outer bonding pads are arranged corresponding to the inner bonding pads, which is beneficial to ensuring the reliability of the electrical connection between the centering branch piece 8 and the shell 3. Specifically, the stiffener 8 is a multi-layer structure embedded with a conductive copper foil layer, which is exposed at each inner pad 821 for being soldered to a corresponding lead. It should be noted that the design is not limited thereto, and in other embodiments, two inner pads are disposed on the inner fixing portion, and two of the first incoming line 212, the first outgoing line 213, the second incoming line 222, and the second outgoing line 223 are electrically connected to one inner pad 821.

Referring to fig. 5 and 6, in the present embodiment, the damper 8 includes a first damper 81 and a second damper 82, and the first damper 81 and the second damper 82 are respectively connected to both short sides of the voice coil assembly 2. It can be understood that the centering branch pieces 8 are arranged into two pieces, so that the consumable materials of the centering branch pieces 8 are reduced, and the overall material cost of the loudspeaker is reduced. Of course, in other embodiments, the first and second yokes 81 and 82 are respectively connected to the two long sides of the voice coil assembly 2. It should be noted that the present design is not limited to this, and the first and second yokes 81 and 82 are attached to the two long sides of the voice coil assembly 2, respectively.

It is easy to understand that, when the incoming line and the outgoing line of the voice coil assembly 2 are designed, the same side of the voice coil may cause the elastic force applied to the voice coil to be inconsistent, so that the amplitudes of the two sides are different, and the product is polarized, and the acoustic performance of the speaker is affected, therefore, in this embodiment, referring to fig. 2 to 4, the first body 211 and the second body 221 have four corners, and the first incoming line 212, the first outgoing line 213, the second incoming line 222, and the second outgoing line 223 are respectively led out from the four corners. It can be understood that, with such an arrangement, the polarization forces generated by the leads in the respective directions of the voice coil assembly 2 are mutually offset, so as to achieve effective balance of the product vibration system in the horizontal direction, and effectively improve the overall acoustic performance of the loudspeaker. It should be noted that the first incoming line 212 (the second incoming line 222) and the first outgoing line 213 (the second outgoing line 223) are not limited to being led out from two adjacent corners or two opposite corners, as long as they can cancel each other out the polarization forces generated by the two lines. Specifically, the first body 211 has a first long side 211a and a second long side 211b which are oppositely arranged, the first incoming line 212 is connected with the first long side 211a, and the first outgoing line 213 is connected with the second long side 211 b; the second body 221 has a third long side 221a and a fourth long side 221b which are oppositely arranged, the second incoming line 222 is connected with the third long side 221a, and the second outgoing line 223 is connected with the fourth long side 221 b; in addition, the first long side 211a and the third long side 221a are located on the same side of the voice coil assembly 2 in the width direction, and the second long side 211b and the fourth long side 221b are located on the same side of the voice coil assembly 2 in the width direction. In other words, the first incoming line 212 and the second incoming line 222 are located on the same side of the voice coil assembly 2 in the width direction, and the first outgoing line 213 and the second outgoing line 223 are located on the same side of the voice coil assembly in the width direction. It can be understood that, for the first voice coil 21, the first incoming line 212 is opposite to the first outgoing line 213, and the generated vibration directions thereof are opposite to each other and cancel each other out, so as to maintain the balance during the vibration of the first voice coil 21, and for the second voice coil 22, the second incoming line 222 is opposite to the second outgoing line 223, and the generated vibration directions thereof are opposite to each other and cancel each other out, so as to maintain the balance during the vibration of the second voice coil 22, so as to better ensure the reliability of the vibration of the voice coil assembly 2.

Referring to fig. 5 and 6, further, the first centering branch 81 includes a first inner fixing portion 813, a first outer fixing portion 811 and a first deformation portion 812, the second centering branch 82 includes a second inner fixing portion 823, a second outer fixing portion 821 and a second deformation portion 822, two first inner pads 813a are disposed on outer edges of both ends of the first inner fixing portion 813, two second inner pads 823a are disposed on outer edges of both ends of the second inner fixing portion, and the first incoming line 212, the first outgoing line 213, the second incoming line 222 and the second outgoing line 223 are electrically connected to the two first inner pads 813a and the two second inner pads 823a, respectively. It is to be understood that, in order to minimize the distance between each lead and the corresponding inner pad to avoid the overlong arrangement of each incoming line and outgoing line and increase the polarization force, two first inner pads 813a and two second inner pads 823a are respectively arranged corresponding to four corners of the voice coil assembly 2. It should be noted that the design is not limited to this, and in other embodiments, the two first inner pads 813a and/or the two second inner pads 823a may also be specifically arranged in other manners.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a loudspeaker, includes vibration system and right vibration system carries out elastic support's centering piece, vibration system includes vibrating diaphragm and voice coil assembly, be equipped with the interior pad and the outer pad of electricity connection on the centering piece, its characterized in that, the voice coil assembly includes:

2. The speaker of claim 1, wherein a lower end surface or a lower end side surface of the voice coil assembly is connected to the inner fixing portion of the spider.

3. The speaker of claim 1, wherein four inner pads are provided on the inner fixing portion, four outer pads electrically connected to the four inner pads in a one-to-one correspondence are provided on the outer fixing portion, and the first incoming line, the first outgoing line, the second incoming line, and the second outgoing line are electrically connected to the four inner pads, respectively.

4. The loudspeaker of claim 1, wherein said spider comprises a first spider and a second spider, said first and second spiders being attached to respective short sides of said voice coil assembly;

5. The speaker of claim 1, wherein the first body and the second body are rectangular ring structures, the first body and the second body have four corners, and the first incoming line, the first outgoing line, the second incoming line, and the second outgoing line are respectively led out from four corner positions.

6. The loudspeaker of claim 5, wherein said first incoming line and said first outgoing line exit from two adjacent corner locations; or,

7. The loudspeaker of claim 4,

first centering piece includes first interior fixed part, first outer fixed part and first deformation portion, second centering piece includes fixed part, the outer fixed part of second and second deformation portion be equipped with two first interior pads on the both ends outward flange of fixed part in the second be equipped with two second interior pads on the both ends outward flange of fixed part in the second, first income line, first being qualified for the next round of competitions, second income line and second are qualified for the next round of competitions and are do not electrically connected on pad in two first interior pads and two seconds.

8. The speaker of any one of claims 1 to 7, wherein the first voice coil and the second voice coil are bonded by glue; or

9. The loudspeaker of any one of claims 1 to 7, wherein the first incoming line and the first outgoing line are connected to a side of the first body facing away from the second body, and the second incoming line and the second outgoing line are connected to a side of the second body facing away from the first body.

10. A loudspeaker according to any one of claims 1 to 7, wherein the first voice coil and the second voice coil are connected in series.