speaker

Abstract

The present invention discloses a loudspeaker, its magnetic return system and kinetic energy enhancement method, wherein the loudspeaker includes an annular outer magnet, an annular inner magnet, an annular outer magnetic conductor, an annular inner magnetic conductor and a magnetic yoke, and has a magnetic gap, wherein the magnetic yoke has an outer mounting surface and an inner mounting surface surrounded by the outer mounting surface, wherein the outer magnet and the inner magnet are respectively mounted on the outer mounting surface and the inner mounting surface of the magnetic yoke in a manner spaced apart from each other, and the magnetic properties of the outer magnet and the inner magnet are opposite, wherein the outer magnetic conductor and the inner magnetic conductor are respectively mounted on the outer magnet and the inner magnet in a manner spaced apart from each other to form the magnetic gap between the outer magnetic conductor, the outer magnet, the magnetic yoke, the inner magnet and the inner magnetic conductor, so that the magnetic flux density of the magnetic gap can be increased.

Description

Technical Field

[0001] The present invention relates to an electroacoustic converter, and in particular to a loudspeaker, a magnetic return system thereof and a kinetic energy enhancement method. Background Art

[0002] A loudspeaker is an electroacoustic transducer capable of converting electrical signals into sound waves. It primarily comprises a diaphragm element, a voice coil, and a magnetic loop system. The upper end of the voice coil is bonded to the diaphragm element, while the lower end of the voice coil is magnetically connected to the magnetic loop system. The magnetic loop system forms a uniform magnetic field. When an electrical signal passes through the voice coil in response, the voice coil and the magnetic loop system interact magnetically, driving the diaphragm element in reciprocating motion, causing the diaphragm element to generate sound waves by agitating air. Existing loudspeakers are categorized as either external-magnetic or internal-magnetic based on the structural differences in the magnetic loop system.

[0003] Attachment Figure 1A The figure shows a cross-sectional view of the existing external magnetic loudspeaker, wherein the external magnetic loudspeaker includes a diaphragm element 10P, a suspension 20P, a frame 30P, a voice coil 40P and a magnetic return system 50P, wherein the two ends of the suspension 20P extend to and are connected to the high end of the diaphragm element 10P and the frame 30P respectively to keep the diaphragm element 10P at the high end of the frame 30P, wherein the magnetic return system 50P is arranged at the low end of the frame 30P, and the magnetic return system 50P includes a T-iron 51P, a permanent magnet 52P and a magnetic conductor 53P and a magnetic gap 54P, wherein the T-iron 51P includes A T-iron plate 511P and a T-iron column 512P extending upward from the middle of the T-iron plate 511P as a whole, the permanent magnet 52P is mounted on the T-iron plate 511P in a stacked manner so as to surround the T-iron column 512P, the magnetic conductor 53P is mounted on the permanent magnet 52P in a stacked manner so as to form the magnetic gap 54P by the T-iron 51P, the permanent magnet 52P and the magnetic conductor 53P, wherein the upper end of the voice coil 40P is connected to the diaphragm element 10P by engagement, and the lower end of the voice coil 40P extends to and is retained in the magnetic gap 54P of the magnetic circuit system 50P to magnetically connect the magnetic circuit system 50P and the voice coil 40P in alternating current.

[0004] Accordingly, the attached Figure 1BThe figure shows a cross-sectional view of the existing internal magnetic loudspeaker, wherein the internal magnetic loudspeaker includes a diaphragm element 10P, a suspension 20P, a frame 30P, a voice coil 40P and a magnetic return system 50P, wherein the two ends of the suspension 20P extend to and are connected to the high end of the diaphragm element 10P and the frame 30P respectively to keep the diaphragm element 10P at the high end of the frame 30P, wherein the magnetic return system 50P is arranged at the low end of the frame 30P, and the magnetic return system 50P includes a U iron 51P, a permanent magnet 52P and a magnetizer 53P and a magnetic gap 54P, the permanent magnet 52P is installed in a stacked manner on the bottom of the U iron 51P, the magnetizer 53P is installed in a stacked manner on the permanent magnet 52P, so as to form the magnetic gap 54P by the U iron 51P, the permanent magnet 52P and the magnetizer 53P, wherein the high end of the voice coil 40P is connected to the diaphragm element 10P by engagement, and the low end of the voice coil 40P extends to and is retained in the magnetic gap 54P of the magnetic return system 50P, so as to magnetically connect the magnetic return system 50P and the voice coil 40P in alternating current.

[0005] It is well known to those skilled in the art that the kinetic energy and volume of the speaker are related to the magnetic field strength of the magnetic gap 54P of the magnetic loop system 50P. Under the premise that other factors remain unchanged, the stronger the magnetic field strength of the magnetic gap 54P of the magnetic loop system 50P, the greater the kinetic energy and volume of the speaker. On the contrary, the weaker the magnetic field strength of the magnetic gap 54P of the magnetic loop system 50P, the smaller the kinetic energy and volume of the speaker. Figure 1A and Figure 1B , whether attached Figure 1A The existing external magnetic loudspeaker shown is also attached Figure 1B In the conventional internal magnet loudspeakers shown, the permanent magnet 52P is retained on a single side of the magnetic gap 54P, creating a magnetic field environment within the magnetic gap 54P. This results in a relatively weak magnetic field strength within the magnetic gap 54P of the magnetic loop system 50P. Therefore, to increase the magnetic field strength within the magnetic gap 54P of the magnetic loop system 50P, the conventional approach is to mechanically increase the size of the permanent magnet 52P. While increasing the size of the permanent magnet 52P can have a certain positive effect on enhancing the magnetic field strength within the magnetic gap 54P of the magnetic loop system 50P, it also results in increased size and weight of the loudspeaker. Summary of the Invention

[0006] One object of the present invention is to provide a loudspeaker, a magnetic loop system thereof, and a kinetic energy enhancement method, wherein a pair of magnets with opposite polarities are provided on opposite sides of a magnetic gap of the magnetic loop system, and the pair of magnets cooperate with each other to significantly increase the magnetic flux density of the magnetic gap to enhance the magnetic field strength of the magnetic gap, thereby effectively increasing the driving force of the magnetic loop system.

[0007] One object of the present invention is to provide a speaker, a magnetic loop system, and a kinetic energy enhancement method therefor. While maintaining the same acoustic performance as conventional speakers, the magnetic loop system is lighter and thinner, facilitating speaker miniaturization, particularly reducing the height of the speaker. Accordingly, while maintaining the same dimensions as conventional speakers, the magnetic loop system provides a stronger driving force, enabling the compact speaker to achieve a high volume.

[0008] One object of the present invention is to provide a loudspeaker, its magnetic return system, and kinetic energy enhancement method, wherein the assembly height of the inner magnet held on the inside of the magnetic gap and the outer magnet held on the outside of the magnet are consistent, so that the outer magnet surrounds the inner magnet. In this way, the relative positions of the outer magnet and the inner magnet can be kept stable, thereby enhancing the reliability of the loudspeaker.

[0009] One object of the present invention is to provide a loudspeaker, its magnetic return system and kinetic energy enhancement method, wherein the loudspeaker provides a frame, the frame provides a frame body and a limiting column and a limiting ring extending from the frame body, wherein the outer magnet abuts against the limiting ring, and the inner magnet is mounted on the limiting column, so that the limiting ring and the limiting column can cooperate with each other to maintain the stability of the relative position of the outer magnet and the inner magnet.

[0010] An object of the present invention is to provide a loudspeaker, a magnetic return system thereof, and a kinetic energy enhancement method, wherein the lower end frame of the frame is integrally formed with the yoke of the magnetic return system, thereby improving the reliability and stability of the loudspeaker.

[0011] According to one aspect of the present invention, the present invention provides a magnetic return system, which includes an annular outer magnet, an annular inner magnet, an annular outer magnetizer, an annular inner magnetizer and a magnetic yoke and a magnetic gap, wherein the magnetic yoke has an outer mounting surface and an inner mounting surface surrounded by the outer mounting surface, wherein the outer magnet and the inner magnet are respectively mounted on the outer mounting surface and the inner mounting surface of the magnetic yoke in a manner spaced apart from each other, and the magnetic properties of the outer magnet and the inner magnet are opposite, wherein the outer magnetizer and the inner magnetizer are respectively mounted on the outer magnet and the inner magnet in a manner spaced apart from each other to form the magnetic gap between the outer magnetizer, the outer magnet, the magnetic yoke, the inner magnet and the inner magnetizer.

[0012] According to one embodiment of the present invention, the outer magnet and the inner magnet have the same assembly height.

[0013] According to one embodiment of the present invention, the magnetic yoke has an outer yoke arm, an inner yoke arm surrounded by the outer yoke arm, and a yoke gap formed between the outer yoke arm and the inner yoke arm, the outer yoke arm forming the outer assembly surface, and the inner yoke arm forming the inner assembly surface, wherein the outer magnet is assembled on the outer assembly surface in a manner overlapping with the outer yoke arm, the inner magnet is assembled on the inner assembly surface in a manner overlapping with the inner yoke arm, and the gap formed between the outer magnet and the inner magnet corresponds to and is connected to the yoke gap of the magnetic yoke, wherein the outer magnetizer is assembled on the outer magnet in a manner overlapping with the outer magnet, the inner magnetizer is assembled on the inner magnet in a manner overlapping with the inner magnet, and the gap formed between the outer magnetizer and the inner magnetizer corresponds to and is connected to the gap formed between the outer magnet and the inner magnet.

[0014] According to another aspect of the present invention, the present invention further provides a speaker comprising:

[0015] a diaphragm element;

[0016] a frame, wherein the frame has a frame upper end and a frame lower end corresponding to the frame upper end;

[0017] a voice coil, wherein the voice coil has a voice coil high end and a voice coil low end corresponding to the voice coil high end, the voice coil high end of the voice coil being joined to the diaphragm element;

[0018] a suspension, wherein the suspension has a suspension outer side and a suspension inner side corresponding to the suspension outer side, wherein the suspension outer side of the suspension extends outward to be connected to the frame high end of the frame, and the suspension inner side of the suspension extends outward to be connected to the diaphragm element; and

[0019] A magnetic return system is provided at the lower end of the frame, wherein the magnetic return system includes an annular outer magnet, an annular inner magnet, an annular outer magnetizer, an annular inner magnetizer, a yoke, and a magnetic gap, wherein the yoke has an outer mounting surface and an inner mounting surface surrounded by the outer mounting surface, wherein the outer magnet and the inner magnet are respectively mounted on the outer mounting surface and the inner mounting surface of the yoke in a manner spaced apart from each other, and the magnetic properties of the outer magnet and the inner magnet are opposite, wherein the outer magnetizer and the inner magnetizer are respectively mounted on the outer magnet and the inner magnet in a manner spaced apart from each other to form the magnetic gap between the outer magnetizer, the outer magnet, the yoke, the inner magnet, and the inner magnetizer, wherein the lower end of the voice coil extends to and is retained in the magnetic gap of the magnetic return system, so that the voice coil and the magnetic return system are magnetically connected in an alternating manner.

[0020] According to one embodiment of the present invention, the outer magnet and the inner magnet have the same assembly height.

[0021] According to one embodiment of the present invention, the magnetic yoke has an outer yoke arm, an inner yoke arm surrounded by the outer yoke arm, and a yoke gap formed between the outer yoke arm and the inner yoke arm, the outer yoke arm forming the outer assembly surface, and the inner yoke arm forming the inner assembly surface, wherein the outer magnet is assembled on the outer assembly surface in a manner overlapping with the outer yoke arm, the inner magnet is assembled on the inner assembly surface in a manner overlapping with the inner yoke arm, and the gap formed between the outer magnet and the inner magnet corresponds to and is connected to the yoke gap of the magnetic yoke, wherein the outer magnetizer is assembled on the outer magnet in a manner overlapping with the outer magnet, the inner magnetizer is assembled on the inner magnet in a manner overlapping with the inner magnet, and the gap formed between the outer magnetizer and the inner magnetizer corresponds to and is connected to the gap formed between the outer magnet and the inner magnet.

[0022] According to one embodiment of the present invention, the frame includes a high-end frame and a low-end frame assembled on the high-end frame, wherein the high-end frame forms the high end of the frame, the outer side of the suspension edge of the suspension edge is connected to the high end of the frame in a manner of extending to and being connected to the high-end frame, wherein the low-end frame forms the low end of the frame, and the magnetic return system is arranged at the low end of the frame in a manner of being arranged on the low-end frame.

[0023] According to one embodiment of the present invention, the low-end frame includes a frame body, a limiting ring and a limiting column and has a limiting space, the limiting ring and the limiting column extend to the frame body in a manner that the limiting column is surrounded by the limiting ring to form the limiting space between the frame body, the limiting ring and the limiting column, wherein the magnetic yoke, the outer magnet and the inner magnet of the magnetic return system are respectively retained in the limiting space of the low-end frame, and the outer wall of the outer magnet abuts against the inner wall of the limiting ring, and the inner magnet is mounted on the limiting column.

[0024] According to one embodiment of the present invention, the magnetic yoke is installed in the limiting space of the lower end frame.

[0025] According to one embodiment of the present invention, the lower end frame is integrally formed with the magnetic yoke, so that the magnetic yoke is retained in the limiting space of the lower end frame.

[0026] According to one embodiment of the present invention, the speaker further includes a centering bracket, wherein the centering bracket has a bracket outer side and a bracket inner side corresponding to the bracket outer side, the bracket outer side of the centering bracket extends outward to be connected to the frame, and the bracket inner side of the centering bracket extends inward to be connected to the diaphragm element.

[0027] According to one embodiment of the present invention, the centering bracket includes a bracket outer frame, a bracket inner frame and a group of elastic recovery members extending between the bracket outer frame and the bracket inner frame, wherein the bracket outer frame forms the outer side of the bracket, the bracket outer frame is installed between the high-end frame and the low-end frame, the bracket inner frame forms the inner side of the bracket, and the bracket inner frame is installed on the diaphragm element.

[0028] According to one embodiment of the present invention, the speaker further includes at least one assembly accessory, wherein the assembly accessory includes a diaphragm assembly and a bracket assembly, the diaphragm assembly extends downward from the suspension edge as a whole, the bracket assembly extends upward from the bracket inner frame as a whole, and the diaphragm assembly and the bracket assembly are assembled with each other to install the bracket inner frame on the diaphragm element.

[0029] According to another aspect of the present invention, the present invention further provides a method for enhancing kinetic energy of a speaker, wherein the method comprises the following steps:

[0030] (a) a pair of magnets of opposite polarity disposed on opposite sides of a magnetic gap in a magnetic loop system; and

[0031] (b) When the loudspeaker allows current to flow through a voice coil in response to an input audio signal, the voice coil and the magnetic loop system are magnetically connected to each other in an alternating current manner to enhance the strength of the magnetic loop system driving the voice coil, thereby enhancing the kinetic energy of the loudspeaker.

[0032] According to one embodiment of the present invention, in step (a), the assembly height of the pair of magnets is kept consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1A It is a cross-sectional schematic diagram of an external magnetic loudspeaker in the prior art.

[0034] Figure 1B It is a cross-sectional schematic diagram of an internal magnetic loudspeaker in the prior art.

[0035] Figure 2A It is a three-dimensional schematic diagram of a loudspeaker from one viewing angle according to a preferred embodiment of the present invention.

[0036] Figure 2B It is a stereoscopic schematic diagram of the loudspeaker from another perspective according to the above preferred embodiment of the present invention.

[0037] Figure 3A It is a schematic exploded view of the speaker according to the preferred embodiment of the present invention from one perspective.

[0038] Figure 3B It is a schematic exploded view of the speaker from another perspective according to the above preferred embodiment of the present invention.

[0039] Figure 4 It is a cross-sectional schematic diagram of the loudspeaker according to the above preferred embodiment of the present invention. DETAILED DESCRIPTION

[0040] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0041] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0042] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0043] Reference is made to the accompanying drawings of the present invention. Figures 2A to 4 A loudspeaker according to a preferred embodiment of the present invention is disclosed and explained in the following description, wherein the loudspeaker includes a frame 10, a suspension 20, a diaphragm element 30, a magnetic return system 40 and a voice coil 50.

[0044] Specifically, the frame 10 has a frame high end 101 and a frame low end 102 corresponding to the frame high end 101. The suspension 20 has a suspension outer side 201 and a suspension inner side 202 corresponding to the suspension outer side 201, wherein the suspension outer side 201 of the suspension 20 extends outward to be connected to the frame high end 101 of the frame 10, and correspondingly, the suspension inner side 202 of the suspension 20 extends inward to be connected to the diaphragm element 30, so that the suspension 20 is configured to hold the diaphragm element 30 on the frame high end 101 of the frame 10. The magnetic return system 40 is disposed at the frame low end 102 of the frame 10, wherein the magnetic return system 40 has a magnetic gap 41, and the magnetic gap 41 forms a magnetic field environment. The voice coil 50 has a high end 501 and a low end 502 corresponding to the high end 501 of the voice coil, wherein the high end 501 of the voice coil 50 is connected to the diaphragm element 30, and the low end 502 of the voice coil 50 extends to and is retained in the magnetic gap 41 of the magnetic return system 40, so that the voice coil 50 and the magnetic return system 40 are magnetically connected in an alternating manner.

[0045] When the speaker responds to an audio signal and current flows through the voice coil 50, the magnetic loop system 40 and the voice coil 50 communicate magnetically with each other, driving the voice coil 50 to reciprocate along the height of the speaker via the magnetic loop system 40. This, in turn, causes the diaphragm 30 to reciprocate along the height of the speaker, thereby causing the diaphragm 30 to excite air and generate sound waves. During this process, the suspension 20 serves to limit the stroke of the diaphragm 30 and prevent the diaphragm 30 from deviating from its direction of motion, thereby preventing the speaker from generating unwanted noise.

[0046] Continue to refer to the attached Figures 2A to 4 The frame 10 of the loudspeaker of the present invention includes a high-end frame 11 and a low-end frame 12 installed on the high-end frame 11, wherein the high-end frame 11 of the frame 10 forms the frame high end 101 of the frame 10, and the outer side 201 of the suspension 20 extends outward to and is connected to the high-end frame 11, so that the outer side 201 of the suspension 20 is connected to the frame high end 101 of the frame 10, so that the diaphragm element 30 is held on the frame high end 101 of the frame 10 by the suspension 20, accordingly, the low-end frame 12 of the frame 10 forms the frame low end 102 of the frame 10, and the magnetic return system 40 is arranged on the low-end frame 12, so that the magnetic return system 40 is arranged on the frame low end 102 of the frame 10.

[0047] In the attached Figures 2A to 4 In the preferred example of the loudspeaker of the present invention shown, the surround 20 is integrally formed between the high-end frame 11 and the diaphragm element 30 . For example, in a specific example of the speaker, first, the high-end frame 11 and the diaphragm element 30 are placed in a suspension mold in such a manner that the high-end frame 11 surrounds the diaphragm element 30; secondly, the molding material injected into the suspension mold is allowed to flow to and cover at least a portion of the high-end frame 11 and at least a portion of the diaphragm element 30, respectively, wherein the molding material may be but is not limited to a rubber material; then, a demolding operation is performed after the molding material is solidified, so that the molding material forms the suspension 20 retained between the high-end frame 11 and the diaphragm element 30, and the molding material covering the high-end frame 11 forms the suspension outer side 201 of the suspension 20, so that the suspension outer side 201 of the suspension 20 extends to and is connected to the high-end frame 11, and accordingly, the molding material covering the diaphragm element 30 forms the suspension inner side 202 of the suspension 20, so that the suspension inner side 202 of the suspension 20 extends to and is connected to the diaphragm element 30.

[0048] Alternatively, in another preferred embodiment of the loudspeaker of the present invention, the surround 20 is prefabricated, and the outer surround 201 of the surround 20 is connected to the high-end frame 11, while the inner surround 202 of the surround 20 is connected to the diaphragm element 30. For example, in a specific embodiment of the loudspeaker, first, the surround 20 is formed using a surround mold; second, the outer surround 201 of the surround 20 is bonded to the high-end frame 11, and the inner surround 202 of the surround 20 is bonded to the diaphragm element 30 using, but not limited to, glue, so that the surround 20 can be held between the high-end frame 11 and the diaphragm element 30.

[0049] Continue to refer to the attached Figures 2A to 4 The loudspeaker of the present invention further includes a centering bracket 60, wherein the centering bracket 60 has a bracket outer side 601 and a bracket inner side 602 corresponding to the bracket outer side 601, wherein the bracket outer side 601 of the centering bracket 60 is connected to the frame 10, and the bracket inner side 602 of the centering bracket 60 is connected to the diaphragm element 30, wherein when the voice coil 50 drives the diaphragm element 30 to reciprocate along the height direction of the loudspeaker, the centering bracket 60 is used to prevent the movement direction of the diaphragm element 30 from being deflected, thereby avoiding the generation of noise by the loudspeaker.

[0050] Specifically, the centering bracket 60 includes an outer bracket frame 61, an inner bracket frame 62, and a set of elastic return members 63. The outer bracket frame 61 surrounds the inner side of the inner bracket frame 62, so that the outer bracket frame 61 forms the outer bracket side 601 of the centering bracket 60, and the inner bracket frame 62 forms the inner bracket side 602 of the centering bracket 60. The set of elastic return members 63 are spaced apart between the outer bracket frame 61 and the inner bracket frame 62. The outer bracket frame 61 of the centering bracket 60 is installed between the upper frame 11 and the lower frame 12 of the frame 10, so that the outer bracket side 601 of the centering bracket 60 is connected to the frame 10. Correspondingly, the inner bracket frame 62 of the centering bracket 60 is installed on the diaphragm element 30, so that the inner bracket side 602 of the centering bracket 60 is connected to the diaphragm element 30.

[0051] When the voice coil 50 is driven by the magnetic return system 40 and drives the diaphragm element 30 to move upward along the height direction of the speaker, the diaphragm element 30 can drive the suspension 20 and the group of elastic return parts 63 to deform, and the suspension 20 and the centering bracket 60 surrounding the diaphragm element 30 can prevent the movement direction of the diaphragm element 30 from deviating from the height direction of the speaker. Correspondingly, when the voice coil 50 is driven by the magnetic return system 40 and drives the diaphragm element 30 to move downward along the height direction of the speaker, the diaphragm element 30 can drive the suspension 20 and the group of elastic return parts 63 to deform, and the suspension 20 and the centering bracket 60 surrounding the diaphragm element 30 can prevent the movement direction of the diaphragm element 30 from deviating from the height direction of the speaker, so that the speaker is prevented from generating noise and the sound effect of the speaker can be guaranteed.

[0052] More specifically, the loudspeaker includes at least one assembly part 70, which includes a diaphragm assembly 71 and a bracket assembly 72. The diaphragm assembly 71 integrally extends downward from the diaphragm element 30, and the bracket assembly 72 integrally extends upward from the bracket inner frame 62 of the centering bracket 60. The diaphragm assembly 71 and the bracket assembly 72 are assembled with each other so that the bracket inner frame 62 of the centering bracket 60 is connected to the diaphragm element 30. Preferably, the diaphragm assembly 71 extends downward from the outer edge of the diaphragm element 30, so that the bracket inner frame 62 of the centering bracket 60 is connected to the outer edge of the diaphragm element 30. Preferably, the diaphragm assembly 71 and the bracket assembly 72 are mating connectors, so that the diaphragm assembly 71 and the bracket assembly 72 can be assembled with each other by plugging them together.

[0053] It is worth mentioning that the assembly method of the high-end frame 11, the bracket outer frame 61, and the low-end frame 12 is not limited in the speaker of the present invention. For example, the high-end frame 11, the bracket outer frame 61, and the low-end frame 12 can be assembled by interlocking, or assembled by gluing. Alternatively, in other examples of the speaker, the bracket outer frame 61 can be mounted only to the high-end frame 11, that is, the bracket outer frame 61 of the centering bracket 60 is mounted to the frame 10 in the same manner as it is mounted to the high-end frame 11 of the frame 10.

[0054] Continue to refer to the attached Figures 2A to 4The magnetic return system 40 includes an annular outer magnet 42, an annular inner magnet 43, an annular outer magnetic conductor 44, an annular inner magnetic conductor 45 and a magnetic yoke 46. The magnetic yoke 46 has an outer mounting surface 461 and an inner mounting surface 462 surrounded by the outer mounting surface 461, wherein the outer magnet 42 and the inner magnet 43 are respectively mounted on the outer mounting surface 461 and the inner mounting surface 462 of the magnetic yoke 46 in a manner of being spaced apart from each other, and the polarities of the outer magnet 42 and the inner magnet 43 are opposite, wherein the outer magnetic conductor 44 and the inner magnetic conductor 45 are respectively mounted on the outer magnet 42 and the inner magnet 43 in a manner of being spaced apart from each other, so as to form the magnetic gap 41 between the outer magnet 42, the inner magnet 43, the outer magnetic conductor 44, the inner magnetic conductor 45 and the magnetic yoke 46. In other words, in the attached Figure 1A The existing external magnetic speaker and the attached Figure 1B The difference between the existing internal magnetic loudspeaker shown is that Figures 2A to 4 In the speaker of the present invention shown, magnets with opposite polarities are respectively maintained on opposite sides of the magnetic gap 41 of the magnetic loop system 40, that is, the outer side of the magnetic gap 41 is maintained by the outer magnet 42, and the inner side of the magnetic gap 41 is maintained by the inner magnet 43. In this way, the inner magnet 43 and the outer magnet 43 cooperate with each other to greatly increase the magnetic flux density of the magnetic gap 41, so as to enhance the magnetic field strength of the magnetic gap 41, so that the driving force of the magnetic loop system 40 can be effectively increased.

[0055] It is worth noting that the materials of the outer magnets 42 and the inner magnets 43 of the magnetic loop system 40 are not limited in the speaker of the present invention. For example, the materials of the outer magnets 42 and the inner magnets 43 can be neodymium iron boron. It is also worth noting that the materials of the outer magnets 42 and the inner magnets 43 of the magnetic loop system 40 can be the same or different.

[0056] In the attached Figures 2A to 4 The speaker and the accompanying Figure 1A The existing external magnetic loudspeaker shown Figure 1B On the premise that the existing internal magnetic speaker has the same acoustic performance, the magnetic return system 40 of the speaker of the present invention is lighter and thinner, which is conducive to miniaturization of the speaker, especially the height of the speaker can be reduced.

[0057] Accordingly, in the attached Figures 2A to 4 The speaker and the accompanying Figure 1A The existing external magnetic speaker shown Figure 1BOn the premise that the existing internal magnetic loudspeaker shown has the same size, the magnetic return system 40 of the loudspeaker of the present invention can provide a stronger driving force, so that the small-sized loudspeaker has the characteristic of a large volume.

[0058] Preferably, the magnetic yoke 46 has an outer yoke arm 463 and an inner yoke arm 464 surrounded by the outer yoke arm 463, and a yoke gap 465 formed between the outer yoke arm 463 and the inner yoke arm 464, wherein the outer yoke arm 463 forms the outer assembly surface 461, and the inner yoke arm 464 forms the inner assembly surface 462, wherein the outer magnet 42 is assembled on the outer assembly surface 461 in a manner overlapping with the outer yoke arm 463, and the inner magnet 43 is assembled on the inner assembly surface 462 in a manner overlapping with the inner yoke arm 464, and a gap is formed between the outer magnet 42 and the inner magnet 43. The yoke gap 465 corresponds to and communicates with the yoke 46, wherein the outer magnetic conductor 44 is mounted on the outer magnet 423 so as to overlap with the outer magnet 42, and the inner magnetic conductor 45 is mounted on the inner magnet 434 so as to overlap with the inner magnet 43. The gap formed between the outer magnetic conductor 44 and the inner magnetic conductor 45 corresponds to and communicates with the gap formed between the outer magnet 42 and the inner magnet 43, thereby forming the magnetic gap 41 between the outer magnet 42, the inner magnet 43, the outer magnetic conductor 44, the inner magnetic conductor 45, and the yoke 46. More preferably, the interface pattern of the yoke 46 is U-shaped.

[0059] More preferably, the outer assembly surface 461 formed by the outer yoke arm 463 of the magnetic yoke 46 and the inner assembly surface 462 formed by the inner yoke arm 464 are flush, so that the outer magnet 42 and the inner magnet 43 have a consistent assembly height and allow the outer magnet 42 to surround the inner magnet 43, thereby enhancing the reliability of the speaker by ensuring the stability of the relative positions of the outer magnet 42 and the inner magnet 43.

[0060] Continue to refer to the attached Figures 2A to 4The lower frame 12 of the frame 10 further includes a frame body 121, a limiting ring 122, a limiting post 123, and a limiting space 124. The limiting ring 122 and the limiting post 123 extend upward from the frame body 121, and the limiting ring 122 surrounds the limiting post 123 to form a limiting space 124 between the frame body 121, the limiting ring 122, and the limiting post 123. The yoke 46, the outer magnet 42, and the inner magnet 43 are respectively retained in the limiting space 124 of the lower frame 12. The outer magnet 42 is limited in position by the outer wall of the outer magnet 42 abutting against the inner wall of the limiting ring 122, and the inner magnet 43 is limited in position by being fitted into the limiting post 123. In this way, the lower frame 12 can ensure the stability of the relative positions of the outer magnet 42 and the inner magnet 43.

[0061] Preferably, the frame body 121, the limiting ring 122 and the limiting column 123 of the low-end frame 12 are formed integrally, that is, the limiting ring 122 and the limiting column 123 extend integrally from the frame body 121 in a manner that the limiting column 123 is surrounded by the limiting ring 122, so that the structural strength of the low-end frame 12 can be guaranteed.

[0062] In the attached Figures 2A to 4 In this preferred example of the loudspeaker, the lower frame 12 is integrally coupled to the yoke 46 of the magnetic return system 40, allowing the yoke 46 to be positioned within the confined space 124 of the lower frame 12. Specifically, the yoke 46 is first positioned within a frame mold. Next, molding material is injected into the frame mold to encapsulate the bottom, outer, and inner walls of the yoke 46. Finally, after the molding material solidifies, the mold is removed from the mold, allowing the molding material to form the yoke 46 integrally coupled to the magnetic return system 40. Alternatively, in other examples of the loudspeaker, after the lower frame 12 is provided, the yoke 46 is mounted within the confined space 124 of the lower frame 12, thereby positioning the yoke 46 within the confined space 124 of the lower frame 12.

[0063] According to another aspect of the present invention, the present invention further provides a method for enhancing kinetic energy of a speaker, wherein the method comprises the following steps:

[0064] (a) a pair of magnets with opposite polarities are provided on opposite sides of the magnetic gap 41 of the magnetic loop system 40; and

[0065] (b) When the speaker allows current to flow through the voice coil 50 in response to an input audio signal, the voice coil 50 and the magnetic return system 40 are magnetically connected to each other in an alternating current manner to enhance the strength of the magnetic return system 40 driving the voice coil 50, thereby enhancing the kinetic energy of the speaker.

[0066] It is worth mentioning that in step (a), the pair of magnets disposed on opposite sides of the magnetic gap 41 of the magnetic loop system 40 are the outer magnet 42 and the inner magnet 43. Preferably, the outer magnet 42 and the inner magnet 43 are assembled at the same height.

[0067] Those skilled in the art will appreciate that the above embodiments are merely examples, and features of different embodiments may be combined with each other to obtain implementation methods that are easily conceivable based on the disclosure of the present invention but are not explicitly indicated in the drawings.

[0068] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended to be illustrative only and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. A loudspeaker, characterized in that include: a diaphragm element; a frame, wherein the frame has a frame upper end and a frame lower end corresponding to the frame upper end; a voice coil, wherein the voice coil has a voice coil high end and a voice coil low end corresponding to the voice coil high end, the voice coil high end of the voice coil being joined to the diaphragm element; a suspension, wherein the suspension has an outer suspension side and an inner suspension side corresponding to the outer suspension side, wherein the outer suspension side of the suspension extends outward to be connected to the frame high end of the frame, and the inner suspension side of the suspension extends outward to be connected to the diaphragm element; a magnetic loop system, wherein the magnetic loop system is disposed at the lower end of the frame, wherein the magnetic loop system includes an annular outer magnet, an annular inner magnet, an annular outer magnetizer, an annular inner magnetizer, a magnetic yoke, and a magnetic gap, wherein the magnetic yoke has an outer mounting surface and an inner mounting surface surrounded by the outer mounting surface, wherein the outer magnet and the inner magnet are respectively mounted on the outer mounting surface and the inner mounting surface of the magnetic yoke in a manner spaced apart from each other, and the magnetic properties of the outer magnet and the inner magnet are opposite, wherein the outer magnetizer and the inner magnetizer are respectively mounted on the outer magnet and the inner magnet in a manner spaced apart from each other to form the magnetic gap between the outer magnetizer, the outer magnet, the magnetic yoke, the inner magnet, and the inner magnetizer, wherein the lower end of the voice coil extends to and is retained in the magnetic gap of the magnetic loop system, so that the voice coil and the magnetic loop system are magnetically connected in alternating current; as well as At least one assembly accessory, wherein the assembly accessory includes a diaphragm assembly and a bracket assembly, the diaphragm assembly and the bracket assembly are assembled to each other on the diaphragm element, wherein the assembly heights of the outer magnet and the inner magnet are consistent, wherein the yoke has an outer yoke arm, an inner yoke arm surrounded by the outer yoke arm, and a yoke gap formed between the outer yoke arm and the inner yoke arm, the outer yoke arm forms the outer assembly surface, and the inner yoke arm forms the inner assembly surface, wherein the outer magnet is assembled to the outer yoke arm in a manner of overlapping the outer yoke arm. The inner magnet is mounted on the inner mounting surface in a manner overlapping the inner yoke arm, and the gap formed between the outer magnet and the inner magnet corresponds to and is connected to the yoke gap of the yoke, wherein the outer magnetizer is mounted on the outer magnet in a manner overlapping the outer magnet, and the inner magnetizer is mounted on the inner magnet in a manner overlapping the inner magnet, and the gap formed between the outer magnetizer and the inner magnetizer corresponds to and is connected to the gap formed between the outer magnet and the inner magnet.

2. The loudspeaker according to claim 1, wherein the frame includes a high-end frame and a low-end frame assembled on the high-end frame, wherein the high-end frame forms the frame high end, the outer side of the suspension edge of the suspension edge is connected to the frame high end in a manner of extending to and being connected to the high-end frame, wherein the low-end frame forms the frame low end, and the magnetic return system is arranged at the frame low end in a manner of being arranged on the low-end frame.

3. The loudspeaker according to claim 2, wherein the low-end frame includes a frame body, a limiting ring and a limiting column and has a limiting space, the limiting ring and the limiting column extend to the frame body in a manner that the limiting column is surrounded by the limiting ring to form the limiting space between the frame body, the limiting ring and the limiting column, wherein the yoke, the outer magnet and the inner magnet of the magnetic return system are respectively retained in the limiting space of the low-end frame, and the outer wall of the outer magnet abuts against the inner wall of the limiting ring, and the inner magnet is mounted on the limiting column. The loudspeaker according to claim 3 , wherein the yoke is installed in the limited space of the lower end frame. 5 . The loudspeaker according to claim 3 , wherein the lower frame is integrally formed with the yoke, so that the yoke is retained in the limiting space of the lower frame.

6. The loudspeaker according to claim 1 further comprises a centering bracket, wherein the centering bracket has a bracket outer side and a bracket inner side corresponding to the bracket outer side, the bracket outer side of the centering bracket extends outward to be connected to the frame, and the bracket inner side of the centering bracket extends inward to be connected to the diaphragm element.

7. The loudspeaker according to claim 5 further comprises a centering bracket, wherein the centering bracket has a bracket outer side and a bracket inner side corresponding to the bracket outer side, the bracket outer side of the centering bracket extends outward to be connected to the frame, and the bracket inner side of the centering bracket extends inward to be connected to the diaphragm element.

8. The loudspeaker according to claim 7, wherein the centering bracket includes a bracket outer frame, a bracket inner frame and a group of elastic recovery members extending between the bracket outer frame and the bracket inner frame, wherein the bracket outer frame forms the outer side of the bracket, the bracket outer frame is installed between the high-end frame and the low-end frame, the bracket inner frame forms the inner side of the bracket, and the bracket inner frame is installed on the diaphragm element.

9. The loudspeaker according to claim 8 further comprises at least one assembly accessory, wherein the diaphragm assembly integrally extends downward from the suspension edge, the bracket assembly integrally extends upward from the bracket inner frame, and the bracket inner frame is mounted on the diaphragm element by the assembly accessory.

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