CN115914953A - Speaker and electronic apparatus - Google Patents

Abstract

The invention discloses a loudspeaker and an electronic device using the same. The loudspeaker comprises a magnetic circuit system and a vibration system, wherein the magnetic circuit system comprises an inner magnetic circuit part and an outer magnetic circuit part, and the outer magnetic circuit part surrounds the periphery of the inner magnetic circuit part and surrounds the inner magnetic circuit part to form a magnetic gap; the vibration system comprises a vibration diaphragm and a voice coil wire, the vibration diaphragm is covered above the magnetic circuit system, and the voice coil wire is wound on the vibration diaphragm in the direction from the center of the vibration diaphragm to the outer edge or in the direction from the outer edge of the vibration diaphragm to the center; wherein, the coil panel formed by the voice coil wire is covered above the magnetic gap, and the direction of the magnetic induction wire generated between the inner magnetic circuit part and the outer magnetic circuit part is vertical to the winding direction of the voice coil wire. The technical scheme of the invention can reduce the volume of the loudspeaker so as to be beneficial to carrying and using miniaturized electronic equipment.

Description

Speakers and Electronics

technical field

The invention relates to the technical field of acoustics, in particular to a loudspeaker and electronic equipment using the loudspeaker.

Background technique

As the most widely used loudspeaker, the electrodynamic loudspeaker has an application rate of nearly 99% in electronic equipment such as speakers and earphones. Although the dynamic speaker has the advantages of low cost and stable performance, it still has the problem of large size, which is not conducive to the installation and use of miniaturized electronic equipment.

Contents of the invention

The main purpose of the present invention is to provide a loudspeaker and electronic equipment using the loudspeaker, aiming at reducing the volume of the loudspeaker, so as to facilitate the loading and use of miniaturized electronic equipment.

In order to achieve the above object, the present invention proposes a loudspeaker, which includes:

A magnetic circuit system, the magnetic circuit system includes an inner magnetic circuit part and an outer magnetic circuit part, the outer magnetic circuit part surrounds the inner magnetic circuit part and forms a magnetic gap surrounded by the inner magnetic circuit part; and

A vibration system, the vibration system includes a diaphragm and a voice coil wire, the diaphragm cover is arranged above the magnetic circuit system, and the voice coil wire follows the direction from the center of the diaphragm to the outer edge or according to the direction from the center of the diaphragm to the outer edge The direction from the outer edge of the diaphragm to the center is wound on the diaphragm;

Wherein, the coil disk cover made of the voice coil wire is arranged above the magnetic gap, and the direction of the magnetic induction line generated between the inner magnetic circuit part and the outer magnetic circuit part is consistent with the direction of the magnetic induction line. The winding direction of the voice coil wire is set vertically.

In an embodiment of the present invention, the diaphragm includes a diaphragm body and a ring, the ring surrounds the diaphragm body, and the inner edge of the ring is connected to the outer edge of the diaphragm body , the outer edge of the ring is connected to the frame of the loudspeaker;

The diaphragm body is a planar structure, and is arranged opposite to the magnetic circuit system, and the voice coil wire is wound on the planar structure.

In an embodiment of the present invention, the voice coil wire is wound on the surface of the diaphragm facing the magnetic circuit system.

In an embodiment of the present invention, the pot frame includes a supporting portion and a connecting portion, the supporting portion is used to support the magnetic circuit system, and the connecting portion surrounds the supporting portion;

The outer edge of the diaphragm is connected to the connecting portion.

In an embodiment of the present invention, the outer magnetic circuit part includes a magnetically permeable yoke, and the magnetically permeable yoke includes a cylinder part and a cover part, the two ends of the cylinder part are connected through, and the cover part covers at one end opening of the cylinder portion;

The inner magnetic circuit part includes a magnet and a magnetically conductive plate, and the magnet and the magnetically conductive plate are both arranged in the cylinder part and stacked on the cover part in sequence. The outer wall of the magnet and the magnetically conductive plate The inner side walls of the cylinder part are arranged at intervals;

The outer edge of the magnetic conductive plate is spaced apart from the cylindrical part to form the magnetic gap.

In an embodiment of the present invention, the distance between the surface of the magnetic conductive plate facing away from the magnet and the diaphragm is smaller than the distance between the end surface of the cylindrical part facing the diaphragm and the diaphragm.

In an embodiment of the present invention, the outer side wall of the magnet protrudes from the outer edge of the magnetic conductive plate.

In an embodiment of the present invention, when projected along the axial direction of the loudspeaker, the voice coil wire completely falls within the range where the magnetic gap is located.

In an embodiment of the present invention, the loudspeaker further includes a reinforcing diaphragm, the reinforcing diaphragm is attached to the diaphragm and covers the area of the diaphragm surrounded by the voice coil wire , the outer edge of the reinforcing diaphragm extends into the area where the voice coil wire is located.

In order to achieve the above object, the present invention also provides an electronic device, the electronic device includes a loudspeaker, and the loudspeaker includes:

A magnetic circuit system, the magnetic circuit system includes an inner magnetic circuit part and an outer magnetic circuit part, the outer magnetic circuit part surrounds the inner magnetic circuit part and forms a magnetic gap surrounded by the inner magnetic circuit part; and

A vibration system, the vibration system includes a diaphragm and a voice coil wire, the diaphragm cover is arranged above the magnetic circuit system, and the voice coil wire follows the direction from the center of the diaphragm to the outer edge or according to the direction from the center of the diaphragm to the outer edge The direction from the outer edge of the diaphragm to the center is wound on the diaphragm;

Wherein, the coil disk cover made of the voice coil wire is arranged above the magnetic gap, and the direction of the magnetic induction line generated between the inner magnetic circuit part and the outer magnetic circuit part is consistent with the direction of the magnetic induction line. The winding direction of the voice coil wire is set vertically.

In the technical solution of the present invention, the voice coil wire originally wound on the voice coil tube is wound on the diaphragm in the direction from the center to the outer edge of the diaphragm or in the direction from the outer edge to the center of the diaphragm. At this time, since the winding method of the voice coil wire is innovatively changed from the conventional longitudinal winding to the horizontal winding, the vibration system of the loudspeaker no longer needs to be equipped with a voice coil tube, which reduces the axial direction of the loudspeaker by one tone. The size of the coil tube, the axial dimension of the vibration system of the loudspeaker can be reduced, and the axial dimension of the loudspeaker can be reduced, so that the purpose of "reducing the volume of the loudspeaker to facilitate the loading and use of miniaturized electronic equipment" can be achieved. At the same time, due to the cancellation of the voice coil tube, the vibration system of the speaker no longer needs to be equipped with a centering piece to ensure that the voice coil tube does not move eccentrically in the magnetic gap, and the axial dimension of the vibration system of the speaker can be further reduced. The axial dimension can be further reduced. Of course, it is understandable that due to the above-mentioned innovative design, no reduction of the magnetic circuit system is involved at all, the magnetic induction of the magnetic circuit system will not be affected, and a series of problems caused by the reduction of the magnetic induction will not occur.

On the other hand, since parts such as the voice coil tube and the centering strut are canceled, the center of gravity of the vibration system can be lowered, and the stability of the vibration system can be increased (not easy to be eccentric). Moreover, since the voice coil wire is driven by cutting the magnetic induction line after being energized, it can directly push the diaphragm to vibrate and radiate sound, and also improves the transient characteristics of the speaker.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative effort.

Fig. 1 is a schematic structural view of an embodiment of the loudspeaker of the present invention;

Fig. 2 is a schematic diagram of the winding of the voice coil wire on the diaphragm body in Fig. 1; wherein, the voice coil wire is wound in a spiral involute manner;

FIG. 3 is a schematic diagram of the force exerted on the voice coil wire in the magnetic circuit system in FIG. 1 .

Explanation of reference numbers:

label name label name 100 speaker 10a magnetic gap 10 Magnetic system 30 vibration system 11 Inner magnetic circuit part 31 Diaphragm 111 magnet 311 Diaphragm body 113 Magnetic plate 313 ring 13 External magnetic circuit part 33 voice coil wire 131 Magnetic yoke 50 Basin frame 1311 Barrel 51 Supporting Department 1313 Capping department 53 Connection

The realization of the purpose of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

In addition, in the present invention, descriptions such as "first", "second" and so on are used for description purposes only, and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "several" and "plurality" mean at least two, such as two, three, etc., unless otherwise specifically defined.

In the present invention, unless otherwise specified and limited, the terms "connection" and "fixation" should be understood in a broad sense, for example, "fixation" can be a fixed connection, a detachable connection, or an integral body; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be an internal communication between two elements or an interaction relationship between two elements, unless otherwise clearly defined. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In addition, the technical solutions of the various embodiments of the present invention can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered as a combination of technical solutions. Does not exist, nor is it within the scope of protection required by the present invention.

Aiming at the technical problems reflected in the background technology, the present invention proposes a loudspeaker, which aims to reduce the volume of the loudspeaker, so as to facilitate the loading and use of miniaturized electronic equipment.

The specific structure of the loudspeaker proposed by the present invention will be described below in specific embodiments:

As shown in Figures 1 to 3, in an embodiment of the speaker 100 of the present invention, the speaker 100 includes:

The magnetic circuit system 10, the magnetic circuit system 10 includes an inner magnetic circuit part 11 and an outer magnetic circuit part 13, and the outer magnetic circuit part 13 surrounds the inner magnetic circuit part 11 and is connected with the inner magnetic circuit part 11 enclosed to form a magnetic gap 10a; and

A vibration system 30, the vibration system 30 includes a diaphragm 31 and a voice coil wire 33, the diaphragm 31 is covered above the magnetic circuit system 10, and the voice coil wire 33 is formed by the center of the diaphragm 31 Winding on the diaphragm 31 in a direction to the outer edge or in a direction from the outer edge of the diaphragm 31 to the center;

Wherein, the coil disk cover wound by the voice coil wire 33 is arranged above the magnetic gap 10a, and the magnetic induction lines generated between the inner magnetic circuit part 11 and the outer magnetic circuit part 13 The direction is perpendicular to the winding direction of the voice coil wire 33 .

It can be understood that the coil cover wound by the voice coil wire 33 is arranged above the magnetic gap 10a, except that "when projected along the axial direction of the loudspeaker, the voice coil wire completely falls into the position of the magnetic gap" introduced later. In addition to the situation of "within the range", it can also be the situation of "the outer edge of the coil disk extends outward to the top of the outer magnetic circuit part 13", or the situation of "the inner edge of the coil disk extends inward to the inner magnetic circuit part 11". above" situation.

It should be noted that, for most existing loudspeakers 100, the voice coil wire 33 is wound on the voice coil tube, and the voice coil tube is inserted into the inner magnetic circuit part 11 and the outer magnetic circuit part. 13 together enclose the formed magnetic gap 10a. When the voice coil wire 33 is energized and subjected to force, it will drive the voice coil tube to move, thereby pushing the diaphragm 31 to vibrate and radiate sound. On the other hand, a damper is also configured to ensure that the voice coil tube can move stably in the magnetic gap 10a without eccentricity. However, in such a design, there are many components arranged in the axial direction of the loudspeaker 100, which will cause the overall structural size of the loudspeaker 100 to be too large.

Usually, the thinning of the loudspeaker 100 is realized by reducing one or some components in the magnetic circuit system 10 . However, such a method will reduce the magnetic induction intensity of the magnetic circuit system 10 , thereby reducing the sensitivity (ie loudness) of the speaker 100 . Moreover, the speaker 100 after thinning generally also has the problem of poor stability. There are two reasons: (1) there is not enough magnetic induction to push the diaphragm 31, that is, insufficient driving force causes the diaphragm 31 to easily eccentrically vibrate, Thereby it is easy to appear the defect of voice coil "rubbing circle" (that is, encountering inner magnetic circuit part 11 and outer magnetic circuit part 13); In the case of , it is more likely to produce the connection position between the diaphragm 31 and the ring 313 or a certain part of the diaphragm 31 to vibrate in reverse phase at medium and high frequencies, that is, to generate distortion.

In order to avoid the above problems, in the technical solution of this embodiment, the voice coil wire 33 originally wound on the voice coil tube is changed to follow the direction from the center of the diaphragm 31 to the outer edge or from the outer edge of the diaphragm 31 to the center. The direction is wound on the diaphragm 31. Specifically, the voice coil wire 33 can be wound on the surface of the diaphragm 31 facing the magnetic circuit system 10 (the bottom view of the diaphragm 31 shown in FIG. 2 , the voice coil wire 33 is wound in a spiral involute manner. On the lower surface of the diaphragm 31. Of course, the voice coil wire 33 can also be wound in other forms, such as a square involute), or it can be wound on the surface of the diaphragm 31 facing away from the magnetic circuit system 10, or The voice coil wire 33 can be wound on both the surface of the diaphragm 31 facing the magnetic circuit system 10 and the surface of the diaphragm 31 facing away from the magnetic circuit system 10 , or the voice coil wire 33 is wrapped in the diaphragm 31 . At this time, since the winding method of the voice coil wire 33 is innovatively changed from the conventional longitudinal winding to the horizontal winding, the vibration system 30 of the speaker 100 no longer needs to be equipped with a voice coil tube. The size of one voice coil tube is reduced, the axial dimension of the vibration system 30 of the loudspeaker 100 is reduced, and the axial dimension of the loudspeaker 100 is reduced, so that "reducing the volume of the loudspeaker 100 is beneficial to miniaturized electronic equipment. carry and use" purposes. At the same time, due to the cancellation of the voice coil tube, the vibration system 30 of the loudspeaker 100 no longer needs to be equipped with a centering strut to ensure that the voice coil tube does not move eccentrically in the magnetic gap 10a. The axial dimension of the vibration system 30 of the loudspeaker 100 can be further reduced, and the axial dimension of the speaker 100 can be further reduced. Of course, it can be understood that due to the above-mentioned innovative design, the reduction of the magnetic circuit system 10 is not involved at all, the magnetic induction of the magnetic circuit system 10 will not be affected, and a series of problems caused by the reduction of the magnetic induction will not be affected. occur.

On the other hand, since parts such as the voice coil tube and the centering strut are eliminated, the axial height of the vibration system 30 can be reduced, and the stability of the vibration system 30 during operation can also be increased (not easily eccentric). Moreover, since the voice coil wire 33 is driven by cutting the magnetic induction line after being energized, it can directly push the diaphragm 31 to vibrate and radiate sound, and also improves the transient characteristics of the speaker 100 .

It should be added that the connection mode between the voice coil wire 33 and the vibrating membrane 31 can either be adhesively connected or covered (for example, the vibrating membrane 31 is composed of upper and lower unit film layers, The voice coil wire 33 is wrapped between the two unit film layers), or other effective and reasonable methods. Those skilled in the art can make reasonable selections according to the requirements of actual application scenarios, and details will not be repeated here.

As shown in Figures 1 to 3, in an embodiment of the speaker 100 of the present invention, the diaphragm 31 includes a diaphragm body 311 and a ring 313, and the ring 313 surrounds the diaphragm body 311, so The inner edge of the ring 313 is connected to the outer edge of the diaphragm body 311, and the outer edge of the ring 313 is connected to the frame 50 of the loudspeaker 100;

The diaphragm body 311 is a planar structure and is arranged opposite to the magnetic circuit system 10 , and the voice coil wire 33 is wound on the planar structure.

It can be understood that the voice coil wire 33 can be wound on the surface of the flat structure facing the magnetic circuit system 10 (according to the spiral involute method, the square involute method, or other effective and reasonable methods), or Wound on the surface of the flat structure facing away from the magnetic circuit system 10, the voice coil can also be wound on the surface of the flat structure facing the magnetic circuit system 10 and the surface of the flat structure facing away from the magnetic circuit system 10 The wire 33, or the voice coil wire 33 is wrapped in the flat structure.

In the technical solution of this embodiment, the shape of the diaphragm 31 is improved from a conical or spherical shape to a flat plate shape, which not only facilitates the arrangement of the voice coil wire 33, but also reduces the axial dimension of the diaphragm 31, thereby The size of the overall structure of the loudspeaker 100 is reduced again in the axial direction. On the other hand, the better aspect of the flat-shaped diaphragm 31 is reflected in the sound effect—the sound fidelity of the flat-shaped diaphragm 31 is higher, the reason is: taking the existing cone-shaped diaphragm 31 as an example, when it When the vibration produces sound, the sound is often concentrated in the "throat", compressed, and then transmitted. Therefore, the sound that people hear is a compressed and deformed sound. However, the flat-shaped diaphragm 31 does not compress the sound, thereby causing no deformation of the sound, and the middle and high frequencies are natural and real, and are not easy to be distorted.

As shown in FIGS. 1 to 3 , in an embodiment of the speaker 100 of the present invention, the voice coil wire 33 is wound on the surface of the diaphragm 31 facing the magnetic circuit system 10 . Specifically, the voice coil wire 33 is wound on the surface of the flat structure facing the magnetic circuit system 10 .

It can be understood that under the design of this embodiment, the voice coil wire 33 will be closer to the magnetic circuit system 10 and the magnetic gap 10a. At this time, the distribution of the magnetic induction lines around the voice coil wire 33 is denser, which is more conducive to the voice coil wire 33 to obtain a strong driving force and avoid the lack of driving force. At the same time, such a configuration is also conducive to further reducing the axial size of the overall structure of the speaker 100 .

As shown in Figures 1 to 3, in an embodiment of the speaker 100 of the present invention, the basin frame 50 includes a supporting part 51 and a connecting part 53, and the supporting part 51 is arranged opposite to the flat structure for use To support the magnetic circuit system 10, the connecting portion 53 surrounds the supporting portion 51;

The outer edge of the diaphragm 31 is connected to the connecting portion 53 . Specifically, the outer edge of the ring 313 is connected to the upper end of the connecting portion 53 .

It can be understood that under the design of this embodiment, the basin frame 50 can not only provide stable support for the magnetic circuit system 10, ensure the stability of the magnetic field, and ensure the stability of the vibration system 30; The structure is simple, the manufacture is convenient, and it is beneficial to the assembly of the magnetic circuit system 10 and the assembly of the vibration system 30 , so that the production efficiency and reliability of the loudspeaker 100 can be improved.

As shown in FIG. 1 to FIG. 3 , in an embodiment of the speaker 100 of the present invention, the outer magnetic circuit part 13 includes a magnetically permeable yoke 131, and the magnetically permeable yoke 131 includes a cylinder part 1311 and a cover part 1313, so The two ends of the cylinder part 1311 are arranged through, and the cover part 1313 is sealed at the opening of one end of the cylinder part 1311;

The inner magnetic circuit part 11 includes a magnet 111 and a magnetically conductive plate 113, the magnet 111 and the magnetically permeable plate 113 are both arranged in the cylinder part 1311 and stacked on the cover part 1313 in sequence , the outer wall of the magnet 111 is spaced apart from the inner wall of the cylinder part 1311;

The outer edge of the magnetic conductive plate 113 is spaced apart from the cylinder portion 1311 to form the magnetic gap 10a.

In this embodiment, the cylinder part 1311 is arranged vertically, and its upper and lower ends are arranged through. The cover portion 1313 is horizontally disposed, and covers the lower opening of the cylinder portion 1311 to form a receiving space enclosed with the cylinder portion 1311 for accommodating the magnet 111 and the magnetic guide plate 113 . Further, the magnet 111 is disposed on the upper surface of the cover portion 1313 , and the outer sidewall is spaced apart from the inner sidewall of the cylinder portion 1311 . The magnetically conductive plate 113 is disposed on the upper surface of the magnet 111 , and its outer edge is spaced apart from the cylindrical portion 1311 to form a magnetic gap 10a. At this time, taking the magnetic field layout shown in Figure 3 as an example, then:

Among the several lines of magnetic induction emanating from the upper end of the cylinder part 1311, some of the lines of magnetic induction will extend upwards to the location of the voice coil wire 33 in a similar "parabolic" form, and then go downward after vertically passing through the voice coil wire 33. 1. Extend to the position where the outer edge of the magnetic guide plate 113 is located, and finally return to the inner magnetic circuit part 11 from the outer edge of the magnetic guide plate 113 to realize circulation. In this way, when the voice coil wire 33 on the diaphragm 31 is energized, the voice coil wire 33 will directly drive the diaphragm 31 to vibrate in the vertical direction under the action of the magnetic field to radiate sound wave energy outward to complete sound generation.

Understandably, under the design of this embodiment, the magnetic circuit system 10 of the loudspeaker 100 has the advantages of simple structure, convenient manufacture, quick assembly, etc., and at the same time has strong structural stability, which can provide a stable magnetic field environment for the vibration system 30, thereby improving The reliability of the loudspeaker 100.

Of course, in addition to adopting the above-mentioned "inner magnetic" magnetic circuit system 10 layout, in other embodiments, the "external magnetic" magnetic circuit system 10 layout can also be adopted, and the "inner and outer magnetic" magnetic circuit system 10 layout method, or other effective and reasonable layout methods of the magnetic circuit system 10, those skilled in the art can make a reasonable choice according to the requirements of the actual application scenario, and will not repeat them here.

It should be noted that, regarding the materials of the magnetic yoke 131 and the magnetic plate 113 , soft magnetic materials can be selected, such as iron, iron alloy, cobalt, cobalt alloy, nickel, nickel alloy and the like. As for the material of the magnet 111 , hard magnetic materials can be selected, for example: alnico permanent magnet alloy, iron chromium cobalt permanent magnet alloy, permanent magnet ferrite, rare earth permanent magnet material, composite permanent magnet material and the like.

As shown in FIGS. 1 to 3 , in an embodiment of the speaker 100 of the present invention, the distance between the surface of the magnetically conductive plate 113 facing away from the magnet 111 and the diaphragm 31 is smaller than the orientation of the cylindrical portion 1311 The distance between one end surface of the diaphragm 31 and the diaphragm 31 .

It should be noted that due to the change of the winding method of the voice coil wire 33 , it is necessary to perform beam centering on the new position of the voice coil wire 33 , instead of binding the magnetic induction line in the magnetic gap 10 a as before. Therefore, there is no need for a thicker magnetically permeable plate 113 (that is, the distance between the surface of the magnetically permeable plate 113 away from the magnet 111 and the distance from the diaphragm 31 and the distance from the end surface of the cylindrical part 1311 toward the vibrating film 31 to the vibrating film 31 are arranged. In a consistent situation, that is, the upper end surface of the inner magnetic circuit part 11 is flush with the upper end surface of the outer magnetic circuit part 13) to ensure that the magnetic induction lines pass through the magnetic gap 10a horizontally, and only the magnetic induction lines need to pass through the magnetic gap 10a from the outer magnetic circuit When the upper end of the part 13 points to the upper end of the inner magnetic circuit part 11 (or from the upper end of the inner magnetic circuit part 11 to the upper end of the outer magnetic circuit part 13), it only needs to be perpendicular to the voice coil line 33 when passing above the magnetic gap 10a . Therefore, the technical solution of this embodiment adopts a thinner magnetically permeable plate 113 (that is, the distance between the surface of the magnetically permeable plate 113 away from the magnet 111 and the diaphragm 31 is configured to be smaller than that of the cylindrical portion 1311 towards the vibrating film 31 . The distance between one end surface and the diaphragm 31) to help form an uneven magnetic induction line emission end and a magnetic induction line return end between the inner magnetic circuit part and the outer magnetic circuit part, which is beneficial to two unequal The formation of the "tip" is conducive to the upward divergence of the magnetic induction line from the outgoing end of the magnetic induction line, so as to help the magnetic induction line pass through the voice coil line more accurately, more stably, and more vertically from above the magnetic gap 10a 33 (instead of most of the original magnetic induction lines running horizontally in the magnetic gap 10a), which is beneficial to the cooperation of the voice coil wire 33 and the magnetic circuit system 10, and is beneficial to the coil formed by the voice coil wire 33 When the disk is electrified, a stronger driving force is obtained, so that the vibration performance of the vibration system 30 is better, and the acoustic performance of the speaker 100 is better.

In addition, it should be noted that based on the design of this embodiment and the design of the voice coil wire 33 being wound horizontally, the axial dimension of the speaker 100 can be reduced by about 2/5 without changing the overall performance of the speaker 100 .

Further, in order to help the magnetic induction line to pass through the voice coil wire 33 vertically from above the magnetic gap 10a more accurately, more stably, and to facilitate the cooperation between the voice coil wire 33 and the magnetic circuit system 10, it is beneficial to The coil disk formed by the voice coil wire 33 obtains a stronger driving force when energized, so that the vibration performance of the vibration system 30 is better, the acoustic performance of the speaker 100 is better, and the magnetic guide plate 113 can also be configured as follows:

As shown in FIG. 1 to FIG. 3 , in an embodiment of the speaker 100 of the present invention, the outer wall of the magnet 111 protrudes from the outer edge of the magnetic conductive plate 113 . That is, the outer edge of the magnetically conductive plate 113 is retracted within the range where the upper surface of the magnet 111 is located.

It can be understood that the retracted design of the outer edge of the magnetically conductive plate 113 can not only further help the inner magnetic circuit part and the outer magnetic circuit part to form an uneven magnetic induction line sending end and a magnetic induction line return end; It is beneficial to expand the range where the magnetic gap 10a is located. The synergistic effect of the two aspects can further facilitate the upward divergence of the magnetic induction lines from the outgoing end of the magnetic induction lines, so as to help the magnetic induction lines to pass through the voice coil line vertically from above the magnetic gap 10a more accurately, more stably and more 33.

Further, in order to help the magnetic induction line to pass through the voice coil wire 33 vertically from above the magnetic gap 10a more accurately, more stably, and to facilitate the cooperation between the voice coil wire 33 and the magnetic circuit system 10, it is beneficial to The coil disk formed by the voice coil wire 33 obtains a stronger driving force when energized, so that the vibration performance of the vibration system 30 is better, and the acoustic performance of the speaker 100 is better. The voice coil wire 33 can also be configured as follows:

As shown in FIG. 1 to FIG. 3 , in an embodiment of the speaker 100 of the present invention, when projected along the axial direction of the speaker 100 , the voice coil wire 33 falls completely within the range of the magnetic gap 10 a.

It can be understood that under the design of this embodiment, the winding of the voice coil wire 33 is more concentrated, and is concentrated directly above the magnetic gap 10a. In this way, the magnetic induction lines generated between the inner and outer magnetic circuit parts can pass through the voice coil wires 33 more accurately and stably, and pass through more voice coil wires 33, so that the coils wound by the voice coil wires 33 The coil disc made of the coil obtains a more powerful driving force when it is energized.

As shown in Figures 1 to 3, in an embodiment of the speaker 100 of the present invention, the speaker 100 also includes a reinforcing diaphragm, and the reinforcing diaphragm is attached to the diaphragm 31 and covers the diaphragm. In the area of the membrane 31 surrounded by the voice coil wire 33 , the outer edge of the reinforcing membrane protrudes into the area where the voice coil wire 33 is located.

It should be noted that although the voice coil wire 33 is concentrated in the vertical range corresponding to the magnetic gap 10a, it can help the voice coil wire 33 to be placed in a magnetic field environment where the magnetic induction lines are more densely distributed, which is beneficial for the voice coil wire 33 to obtain powerful drive. However, it is also easy to cause mid-high frequency anti-phase vibration between the area of the diaphragm 31 where the voice coil wire 33 is located and the area of the diaphragm 31 surrounded by the voice coil wire 33 , resulting in defects.

In order to solve this problem, the technical solution of this embodiment further strengthens the connection between the area where the voice coil wire 33 on the diaphragm 31 is located and the area of the diaphragm 31 surrounded by the voice coil wire 33 by using a reinforcing diaphragm. Make the connection between the area where the voice coil wire 33 on the diaphragm 31 and the area surrounded by the voice coil wire 33 of the diaphragm 31 have higher strength and better integrity, so that the gap between the two can be better eliminated. The medium-high frequency anti-phase vibration phenomenon is used to improve the vibration performance of the vibration system 30 and optimize the acoustic performance of the loudspeaker 100 .

It should be noted that the reinforcement diaphragm can be made of the same material as that of the diaphragm 31 . The shape of the reinforcing membrane can match the shape of the area it covers, for example both are circular. The size of the reinforcing diaphragm can be slightly larger than the size of the area it covers, so that the outer edge of the reinforcing diaphragm can extend into the area where the voice coil wire 33 is located. Further, the area where the voice coil wire 33 is located on the diaphragm 31 refers to the ring-shaped area from the innermost circle of voice coil wire 33 to the outermost circle of voice coil wire 33 . The area of the diaphragm 31 surrounded by the voice coil wire 33 refers to the area within the innermost circle of the voice coil wire 33 . The peripheral area of the area where the voice coil wire 33 is located refers to the area other than the outermost circle of the voice coil wire 33 .

In addition, the positional relationship between the reinforcing diaphragm and the voice coil wire 33 is described as follows (taking the voice coil wire 33 wound on the surface of the diaphragm 31 facing the magnetic circuit system 10 as an example):

Situation 1 (the reinforcement diaphragm and the voice coil wire 33 are located on the same side of the diaphragm 31): the reinforcement diaphragm is affixed (for example, through adhesive connection, etc.) on the surface of the diaphragm 31 facing the magnetic circuit system 10, supplementing The middle part of the reinforcing diaphragm covers the lower surface of the diaphragm 31 surrounded by the voice coil wire 33 , and the outer edge of the reinforcing diaphragm covers one or more turns of the voice coil wire 33 inside.

Situation 2 (the reinforcement diaphragm and the voice coil wire 33 are located on different sides of the diaphragm 31): the reinforcement diaphragm is attached (for example, by means of adhesive connection) on the surface of the diaphragm 31 facing away from the magnetic circuit system 10, The middle part of the reinforcing diaphragm covers the upper surface of the area surrounded by the voice coil wire 33 of the diaphragm 31, and the outer edge of the reinforcing diaphragm covers one or more rings of the inner side of the upper surface of the diaphragm 31. On the part corresponding to circle line 33.

When the voice coil wire 33 handles other winding situations, the reinforcement diaphragm can be arranged in the above manner, and those skilled in the art can make a reasonable choice according to the requirements of the actual application scenario, and details will not be repeated here.

Of course, it can be understood that the connection between the area where the voice coil wire 33 is located on the diaphragm 31 and its peripheral area can also be equipped with a reinforcing diaphragm to better eliminate the mid-high frequency reverse phase vibration between the two, thereby improving The vibration performance of the vibration system 30 optimizes the acoustic performance of the speaker 100.

The present invention also proposes an electronic device, which includes a loudspeaker 100. For the specific structure of the loudspeaker 100, refer to the above-mentioned embodiments. Since this electronic device adopts all the technical solutions of all the above-mentioned embodiments, it has at least the advantages of all the above-mentioned embodiments. All the beneficial effects brought by all the technical solutions will not be repeated here.

Understandably, the electronic device can be, but is not limited to, a mobile phone, a notebook computer, a tablet computer, a personal digital assistant (Personal Digital Assistant, PDA), an e-book reader, an MP3 (Moving Picture Experts Compression Standard Audio Level 3, Moving Picture Experts Group Audio Layer III) player, MP4 (Moving Picture Experts Group Audio Layer IV) player, wearable device, navigator, handheld game console, virtual and reality equipment, augmented reality equipment, Speakers, headphones, etc.

The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Under the inventive concept of the present invention, the equivalent structural transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly/indirectly used in other All relevant technical fields are included in the patent protection scope of the present invention.

Claims (10)

1. A loudspeaker, comprising:

the magnetic circuit system comprises an inner magnetic circuit part and an outer magnetic circuit part, wherein the outer magnetic circuit part surrounds the periphery of the inner magnetic circuit part and forms a magnetic gap with the inner magnetic circuit part in an enclosing manner; and

the vibration system comprises a vibration diaphragm and a voice coil wire, the vibration diaphragm is covered above the magnetic circuit system, and the voice coil wire is wound on the vibration diaphragm according to the direction from the center of the vibration diaphragm to the outer edge or the direction from the outer edge of the vibration diaphragm to the center;

the coil panel formed by winding the voice coil wire is covered above the magnetic gap, and the direction of the magnetic induction wire generated between the inner magnetic circuit part and the outer magnetic circuit part is perpendicular to the winding direction of the voice coil wire.

2. The loudspeaker of claim 1, wherein the diaphragm comprises a diaphragm body and a corrugated rim, the corrugated rim surrounds the diaphragm body, an inner edge of the corrugated rim is connected to an outer edge of the diaphragm body, and an outer edge of the corrugated rim is connected to a frame of the loudspeaker;

the diaphragm body is of a flat-plate structure and is arranged opposite to the magnetic circuit system, and the voice coil wire is wound on the flat-plate structure.

3. A loudspeaker as claimed in claim 1, characterized in that the voice coil wire is wound on a surface of the diaphragm facing the magnetic circuit.

4. The loudspeaker of claim 1, wherein the frame comprises a support portion for supporting the magnetic circuit system and a connecting portion surrounding the support portion;

the outer edge of the diaphragm is connected to the connecting portion.

5. The speaker according to any one of claims 1 to 4, wherein the outer magnetic path section includes a magnetic conductive yoke, the magnetic conductive yoke includes a cylinder portion and a cover portion, the cylinder portion is provided with both ends penetrating therethrough, and the cover portion covers an opening at one end of the cylinder portion;

the inner magnetic circuit part comprises a magnet and a magnetic conductive plate, the magnet and the magnetic conductive plate are both arranged in the barrel part and are sequentially stacked on the sealing cover part, and the outer side wall of the magnet and the inner side wall of the barrel part are arranged at intervals;

the outer edge of the magnetic conduction plate and the barrel part are arranged at intervals to form the magnetic gap.

6. A loudspeaker as claimed in claim 5, wherein the surface of the magnetic conductive plate facing away from the magnet is at a smaller distance from the diaphragm than an end face of the cylinder portion facing the diaphragm.

7. The loudspeaker of claim 5, wherein an outer sidewall of the magnet is disposed to protrude beyond an outer edge of the magnetically permeable plate.

8. A loudspeaker as claimed in claim 5, characterized in that the voice coil wire, in projection in the axial direction of the loudspeaker, falls completely within the range of the magnetic gap.

9. The loudspeaker of claim 8, further comprising a reinforcing diaphragm attached to the diaphragm and covering an area of the diaphragm surrounded by the voice coil wire, wherein an outer edge of the reinforcing diaphragm extends into the area of the voice coil wire.

10. An electronic device, characterized in that it comprises a loudspeaker according to any one of claims 1 to 9.

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