loudspeaker

Abstract

This invention provides a loudspeaker, including a magnetic circuit system and a vibration system. The vibration system includes a vibrating unit that vibrates under the magnetic field of the magnetic circuit system and a diaphragm driven by the vibrating unit. The vibrating unit is disposed on one side of the magnetic circuit system. The magnetic circuit system includes an inner magnet, an outer magnet, and a magnetic guide. The outer magnet surrounds the outer periphery of the inner magnet. The magnetic guide includes a base and a peripheral portion connected to the base. A first gap is formed between the peripheral portion and the outer magnet, and a second gap is formed between the peripheral portion and the inner magnet. The vibrating unit includes a central unit, an outer planar voice coil, and a vertical voice coil. The inner magnet is a first permanent magnet, and the central unit is an inner planar voice coil; alternatively, the inner magnet is an electromagnet, and the central unit is a second permanent magnet. This loudspeaker features enhanced magnetic field, improving loudspeaker performance. Furthermore, the increased number of voice coils and their placement design allow for more efficient utilization of the magnetic field of the magnetic circuit system, further enhancing loudspeaker performance.

Description

Technical Field

[0001] This utility model relates to the field of acoustic equipment, and in particular to a loudspeaker. Background Technology

[0002] A loudspeaker typically includes a vibration system and a magnetic circuit system. The vibration system includes a diaphragm and a voice coil fixed to the diaphragm, while the magnetic circuit system provides a magnetic field to the voice coil to drive the diaphragm to vibrate. Traditional loudspeakers typically consist of a diaphragm, a magnet, and a voice coil mounted on the diaphragm. The voice coil vibrates under the influence of the magnetic field, thereby causing the diaphragm to vibrate.

[0003] Traditional loudspeakers only utilized a portion of the magnetic field in their voice coils, resulting in insufficient loudspeaker performance. Utility Model Content

[0004] The technical problem to be solved by this invention is to provide an improved loudspeaker, addressing the aforementioned deficiencies in related technologies.

[0005] The technical solution adopted by this utility model to solve its technical problem includes: providing a loudspeaker, including a magnetic circuit system and a vibration system, the vibration system including a vibration unit that can generate vibration under the action of the magnetic field of the magnetic circuit system and a diaphragm driven by the vibration unit, the vibration unit being disposed on one side of the magnetic circuit system, the magnetic circuit system including an inner magnet, an outer magnet and a magnetic conductor, the outer magnet surrounding the periphery of the inner magnet, the magnetic conductor including a base and a peripheral portion connected to the base, the base being connected to the side of the inner magnet away from the diaphragm, the peripheral portion surrounding the periphery of the base, extending toward the diaphragm and located in the gap between the inner magnet and the outer magnet, a first gap being formed between the peripheral portion and the outer magnet, and a second gap being formed between the peripheral portion and the inner magnet;

[0006] The vibrating unit includes a central unit, an outer planar voice coil, and a vertical voice coil. The vibrating unit is disposed on the diaphragm. Both the outer planar voice coil and the vertical voice coil are annular. The vertical voice coil surrounds the periphery of the central unit, and the outer planar voice coil surrounds the periphery of the vertical voice coil. The position of the outer planar voice coil corresponds to the first gap. One side of the vertical voice coil is connected to the diaphragm, and the other side extends into the second gap. The position of the central unit corresponds to the inner magnet. The dimension of the outer planar voice coil in the plane of the diaphragm is greater than its dimension perpendicular to the plane of the diaphragm, and the dimension of the vertical voice coil in the plane of the diaphragm is smaller than its dimension perpendicular to the plane of the diaphragm.

[0007] The inner magnet is a first permanent magnet and the middle unit is an inner planar voice coil, wherein the dimension of the inner planar voice coil in the direction of the diaphragm plane is greater than the dimension in the direction perpendicular to the diaphragm plane; or, the inner magnet is an electromagnet and the middle unit is a second permanent magnet.

[0008] Preferably, the second permanent magnet is sheet-shaped, and its thickness direction is the same as that of the diaphragm.

[0009] Preferably, the thickness of the second permanent magnet is comparable to the thickness of the outer planar voice coil.

[0010] Preferably, the inner magnet is the first permanent magnet and the magnetic circuit system includes an Nevada, which is disposed on the side of the first permanent magnet facing the diaphragm.

[0011] Preferably, the number of electromagnets is at least two, and the electromagnets are distributed in a ring-shaped interval in a plane direction parallel to the inner plane voice coil.

[0012] Preferably, the outer magnet and / or the outer periphery of the magnetic conductor are annular.

[0013] Preferably, the magnetic circuit system includes an outer washer, the middle portion of which is connected to the side of the magnetic conductor away from the diaphragm, and the peripheral portion of which is connected to the side of the outer magnet away from the diaphragm.

[0014] Preferably, the loudspeaker includes a bracket, the magnetic circuit system and the vibration system are disposed on the bracket, the diaphragm includes a planar portion in the middle and an arched portion surrounding the periphery of the planar portion, the vibration unit is disposed on the planar portion, the inner edge of the arched portion is connected to the outer edge of the planar portion, and the outer edge of the arched portion is connected to the bracket.

[0015] Preferably, the vibration unit is located on the side of the diaphragm facing the magnetic circuit system.

[0016] Preferably, the outer planar voice coil, the vertical voice coil, the first gap, and the second gap are in the form of a circular ring or a square ring.

[0017] The technical solution of this utility model has at least the following beneficial effects: Compared with traditional loudspeakers, firstly, the magnetic circuit system includes not only an outer magnet but also an inner magnet and a magnetic conductor, which enhances the magnetic field and improves the loudspeaker's performance. Secondly, the voice coil unit includes not only a vertical voice coil but also an outer planar voice coil and a central unit. The vertical voice coil surrounds the central unit, and the central unit is positioned corresponding to the inner magnet. The vertical voice coil extends into the gap between the inner magnet and the outer periphery of the magnetic conductor. The outer planar voice coil is positioned corresponding to the gap between the outer periphery of the magnetic conductor and the outer magnet. The addition of more voice coils and their placement design allows for more efficient utilization of the magnetic field of the magnetic circuit system, further improving the loudspeaker's performance. Furthermore, the external plane voice coil can suppress the rolling and oscillation of the diaphragm under large amplitude. This is because the external plane voice coil is mainly affected by the magnetic field of the external magnet and the magnetic conductor. In addition to the Lorentz force perpendicular to the plane of the diaphragm, it is also subjected to a force tangential to the magnetic field. Moreover, the forces on opposite sides of the external plane voice coil are opposite, so it can suppress the rolling and oscillation of the diaphragm and improve the sound effect of the loudspeaker. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of a loudspeaker according to the first embodiment of this utility model.

[0020] Figure 2 yes Figure 1 A three-dimensional sectional view of the speaker cut in the middle position.

[0021] Figure 3 yes Figure 2 A magnified view of part A.

[0022] Figure 4 yes Figure 1 A three-dimensional sectional view of the speaker cut in the middle position from another perspective.

[0023] Figure 5 This is a perspective view of a loudspeaker according to the second embodiment of this utility model.

[0024] Figure 6 yes Figure 5 A three-dimensional sectional view of the speaker cut in the middle position.

[0025] Figure 7 yes Figure 6A magnified view of part B.

[0026] Figure 8 yes Figure 5 A three-dimensional sectional view of the speaker cut in the middle position from another perspective.

[0027] The labels in the diagram represent: magnetic circuit system 1, first permanent magnet 101, electromagnet 102, outer magnet 11, magnetic conductor 12, base 121, outer perimeter 122, first gap 1201, second gap 1202, neisse 13, outer washer 14, vibration system 2, vibration unit 21, inner plane voice coil 211, second permanent magnet 212, outer plane voice coil 213, vertical voice coil 214, diaphragm 22, flat part 221, arched part 222, and support 3. Detailed Implementation

[0028] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. It should be understood that if terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" appear in the text, indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and describing the structure and operation in a specific orientation, they are only for the convenience of describing the technical solution and do not indicate that the device or element referred to must have a specific orientation. Therefore, they should not be construed as limitations on this utility model. It should also be noted that unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" appear in the text and should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "below" another element, the element can be located "directly" or "indirectly" on the other element, or there may be one or more intermediary elements. If the terms "first," "second," etc., appear in this document only for the convenience of describing the technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features, then features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0030] See Figure 1-8 The loudspeaker in one embodiment of the present invention includes a magnetic circuit system 1 and a vibration system 2. The vibration system 2 includes a vibration unit 21 that can vibrate under the action of the magnetic field of the magnetic circuit system 1 and a diaphragm 22 driven by the vibration unit 21. The vibration unit 21 is disposed on one side of the magnetic circuit system 1. The magnetic circuit system 1 includes an inner magnet, an outer magnet 11 and a magnetic conductor 12. The outer magnet 11 surrounds the periphery of the inner magnet. The magnetic conductor 12 includes a base 121 and a peripheral portion 122 connected to the base 121. The base 121 is connected to the side of the inner magnet away from the diaphragm 22. The peripheral portion 122 surrounds the periphery of the base 121, extends toward the diaphragm 22 and is located in the gap between the inner magnet and the outer magnet 11. A first gap 1201 is formed between the peripheral portion 122 and the outer magnet 11, and a second gap 1202 is formed between the peripheral portion 122 and the inner magnet.

[0031] The vibrating unit 21 includes a central unit, an outer planar voice coil 213, and a vertical voice coil 214. The vibrating unit 21 is disposed on the diaphragm 22. Both the outer planar voice coil 213 and the vertical voice coil 214 are annular. The vertical voice coil 214 surrounds the periphery of the central unit, and the outer planar voice coil 213 surrounds the periphery of the vertical voice coil 214. The position of the outer planar voice coil 213 corresponds to the first gap 1201. One side of the vertical voice coil 214 is connected to the diaphragm 22, and the other side extends into the second gap 1202. The position of the central unit corresponds to the inner magnet. The dimension of the outer planar voice coil 213 in the plane direction of the diaphragm 22 is larger than its dimension perpendicular to the plane direction of the diaphragm 22, and the dimension of the vertical voice coil 214 in the plane direction of the diaphragm 22 is smaller than its dimension perpendicular to the plane direction of the diaphragm 22.

[0032] In the first embodiment, see Figure 1-4 The inner magnet is a first permanent magnet 101 and the middle unit is an inner planar voice coil 211. The dimension of the inner planar voice coil 211 in the plane direction of the diaphragm 22 is larger than the dimension in the direction perpendicular to the plane of the diaphragm 22; or, in the second embodiment, see Figure 5-8The inner magnet is an electromagnet 102, and the middle unit is a second permanent magnet 212. Specifically, in the first embodiment, the outer planar voice coil 213, the vertical voice coil 214, and the inner planar voice coil 211 vibrate under the magnetic field of the magnetic circuit system 1, wherein the inner planar voice coil 211 is mainly affected by the magnetic field of the inner magnet; in the second embodiment, the outer planar voice coil 213 and the vertical voice coil 214 vibrate under the magnetic field of the magnetic circuit system 1, wherein the second permanent magnet 212 is mainly affected by the magnetic field of the inner magnet.

[0033] Compared to traditional loudspeakers, this loudspeaker, firstly, includes an outer magnet 11, an inner magnet, and a magnetic conductor 12 in its magnetic circuit system 1, enhancing the magnetic field and improving loudspeaker performance. Secondly, the voice coil unit includes a vertical voice coil 214, an outer planar voice coil 213, and a central unit. The vertical voice coil 214 surrounds the central unit, and the central unit is positioned corresponding to the inner magnet. The vertical voice coil 214 extends into the gap between the inner magnet and the outer periphery 122 of the magnetic conductor 12. The outer planar voice coil 213 is positioned corresponding to the gap between the outer periphery 122 of the magnetic conductor 12 and the outer magnet 11. The addition of more voice coils and their placement design allows for more efficient utilization of the magnetic field of the magnetic circuit system 1, further improving loudspeaker performance. Furthermore, the outer-plane voice coil 213 can suppress the rolling and oscillation of the diaphragm 22 under large amplitudes. This is because the outer-plane voice coil 213 is mainly subjected to the magnetic fields of the outer magnet 11 and the magnetic conductor 12. In addition to the Lorentz force perpendicular to the plane of the diaphragm 22, it is also subjected to a force tangential to the magnetic field (see [link to relevant documentation] for the direction of the force). Figure 2 and 6 As indicated by the arrow at the outer plane voice coil 213, and with opposite forces on opposite sides of the outer plane voice coil 213, it can suppress the rolling and oscillation of the diaphragm 22, thus improving the sound effect of the speaker. Furthermore, the magnetic circuit system 1 can be configured in more diverse ways. When the inner magnet is the first permanent magnet 101, the middle unit of the vibrating unit 21 is the inner plane voice coil 211; when the inner magnet is the electromagnet 102, the middle unit of the vibrating unit 21 is the second permanent magnet 212. This versatility of the magnetic circuit system 1 can meet different performance requirements.

[0034] See Figure 1-4 In the aforementioned first embodiment, the second permanent magnet 212 is further shaped like a sheet, with its thickness direction being the same as that of the diaphragm 22. Preferably, the thickness of the second permanent magnet 212 is comparable to the thickness of the outer planar voice coil 213, thus making the second permanent magnet 212 relatively thin, a thin magnet. The inner magnet is the first permanent magnet 101, and the magnetic circuit system 1 includes an Nevada 13, which is disposed on the side of the first permanent magnet 101 facing the diaphragm 22, and the Nevada 13 serves as a magnetic conductor.

[0035] See Figure 5-8In the second embodiment described above, the number of electromagnets 102 is further specified as at least two, for example, two, three, or four. Figure 5-8 The embodiment shown has four electromagnets 102; in addition, the electromagnets 102 are arranged in a ring-shaped interval in a plane direction parallel to the inner plane voice coil 211.

[0036] In the aforementioned first and second embodiments, the peripheral portion 122 of the outer magnet 11 and / or the magnetic conductor 12 is further annular.

[0037] In the aforementioned first and second embodiments, the magnetic circuit system 1 further includes an outer washer 14, the middle part of which is connected to the side of the magnetic conductor 12 away from the diaphragm 22, and the outer periphery 122 of the outer washer 14 is connected to the side of the outer magnet 11 away from the diaphragm 22. The outer washer 14 plays a magnetic guiding role.

[0038] In the aforementioned first and second embodiments, the loudspeaker further includes a bracket 3, a magnetic circuit system 1, and a vibration system 2 disposed on the bracket 3. The bracket 3 is preferably ring-shaped and surrounds the outer magnet 11. A diaphragm 22 is disposed on one side of the bracket 3, and an outer washer 14 is disposed on the other side of the bracket 3. The diaphragm 22 includes a planar portion 221 in the center and an arched portion 222 surrounding the planar portion 221. A vibration unit 21 is disposed on the planar portion 221. The inner edge of the arched portion 222 is connected to the outer edge of the planar portion 221, and the outer edge of the arched portion 222 is connected to the bracket 3. The arched portion 222 enables the diaphragm 22 to generate large vibrations.

[0039] In the aforementioned first and second embodiments, the vibration unit 21 is further disposed on the side of the diaphragm 22 facing the magnetic circuit system 1.

[0040] In the aforementioned first and second embodiments, the outer planar voice coil 213, the vertical voice coil 214, the first gap 1201, and the second gap 1202 are further shaped into annular or square annular shapes. Preferably, when the outer planar voice coil 213, the vertical voice coil 214, the first gap 1201, and the second gap 1202 are annular, the inner magnet is cylindrical or annular, and the outer magnet 11 and the outer periphery 122 of the magnetic conductor 12 are annular; when the outer planar voice coil 213, the vertical voice coil 214, the first gap 1201, and the second gap 1202 are square annular, the inner magnet is a square cylinder or square shape, the outer magnet 11 and the outer periphery 122 of the magnetic conductor 12 are square annular, and the second planar voice coil is square annular.

[0041] In summary, compared to traditional loudspeakers, this loudspeaker, firstly, includes an inner magnet and a magnetic conductor 12 in addition to an outer magnet 11, thus enhancing the magnetic field and improving loudspeaker performance. Secondly, the voice coil unit includes a vertical voice coil 214, an outer planar voice coil 213, and a central unit. The vertical voice coil 214 surrounds the central unit, and the central unit is positioned corresponding to the inner magnet. The vertical voice coil 214 extends into the gap between the inner magnet and the outer periphery 122 of the magnetic conductor 12. The outer planar voice coil 213 is positioned corresponding to the gap between the outer periphery 122 of the magnetic conductor 12 and the outer magnet 11. The addition of more voice coils and their placement design allows for more efficient utilization of the magnetic field of the magnetic circuit system 1, further improving loudspeaker performance. Furthermore, the outer-plane voice coil 213 can suppress the rolling and oscillation of the diaphragm 22 under large amplitudes. This is because the outer-plane voice coil 213 is mainly subjected to the magnetic fields of the outer magnet 11 and the magnetic conductor 12. In addition to the Lorentz force perpendicular to the plane of the diaphragm 22, it is also subjected to a force tangential to the magnetic field (see [link to relevant documentation] for the direction of the force). Figure 2 and 6 As indicated by the arrow at the outer plane voice coil 213, and with opposite forces on opposite sides of the outer plane voice coil 213, it can suppress the rolling and oscillation of the diaphragm 22, thus improving the sound effect of the speaker. Furthermore, the magnetic circuit system 1 can be configured in more diverse ways. When the inner magnet is the first permanent magnet 101, the middle unit of the vibrating unit 21 is the inner plane voice coil 211; when the inner magnet is the electromagnet 102, the middle unit of the vibrating unit 21 is the second permanent magnet 212. This versatility of the magnetic circuit system 1 can meet different performance requirements.

[0042] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. For those skilled in the art, this utility model can have various modifications, combinations, and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A loudspeaker, characterized in that, The system includes a magnetic circuit system (1) and a vibration system (2). The vibration system (2) includes a vibration unit (21) that can vibrate under the action of the magnetic field of the magnetic circuit system (1) and a diaphragm (22) driven by the vibration unit (21). The vibration unit (21) is disposed on one side of the magnetic circuit system (1). The magnetic circuit system (1) includes an inner magnet, an outer magnet (11), and a magnetic conductor (12). The outer magnet (11) surrounds the outer periphery of the inner magnet. The magnetic conductor (12) includes a base (121) for... and a peripheral portion (122) connected to the base (121), the base (121) being connected to the side of the inner magnet away from the diaphragm (22), the peripheral portion (122) surrounding the base (121), extending toward the diaphragm (22) and located in the gap between the inner magnet and the outer magnet (11), a first gap (1201) being formed between the peripheral portion (122) and the outer magnet (11), and a second gap (1202) being formed between the peripheral portion (122) and the inner magnet; The vibrating unit (21) includes a central unit, an outer planar voice coil (213), and a vertical voice coil (214). The vibrating unit (21) is disposed on the diaphragm (22). Both the outer planar voice coil (213) and the vertical voice coil (214) are annular. The vertical voice coil (214) surrounds the periphery of the central unit, and the outer planar voice coil (213) surrounds the periphery of the vertical voice coil (214). The position of the outer planar voice coil (213) corresponds to the first gap ( 1201), one side of the vertical voice coil (214) is connected to the diaphragm (22), and the other side extends into the second gap (1202), the position of the middle unit corresponds to the inner magnet; the outer planar voice coil (213) has a larger dimension in the plane direction of the diaphragm (22) than in the plane direction perpendicular to the diaphragm (22), and the vertical voice coil (214) has a smaller dimension in the plane direction of the diaphragm (22) than in the plane direction perpendicular to the diaphragm (22); The inner magnet is a first permanent magnet (101) and the middle unit is an inner planar voice coil (211), wherein the inner planar voice coil (211) has a larger dimension in the plane direction of the diaphragm (22) than in the plane direction perpendicular to the diaphragm (22); or, the inner magnet is an electromagnet (102) and the middle unit is a second permanent magnet (212).

2. The loudspeaker according to claim 1, characterized in that, The second permanent magnet (212) is sheet-shaped, and its thickness direction is the same as that of the diaphragm (22).

3. The loudspeaker according to claim 2, characterized in that, The thickness of the second permanent magnet (212) is comparable to the thickness of the outer planar voice coil (213).

4. The loudspeaker according to claim 1, characterized in that, The inner magnet is the first permanent magnet (101) and the magnetic circuit system (1) includes an Nevada (13) which is located on the side of the first permanent magnet (101) facing the diaphragm (22).

5. The loudspeaker according to claim 1, characterized in that, The number of electromagnets (102) is at least two, and the electromagnets (102) are distributed in a ring-shaped interval in a plane direction parallel to the inner plane voice coil (211).

6. The loudspeaker according to any one of claims 1-5, characterized in that, The outer magnet (11) and / or the outer periphery (122) of the magnetic conductor (12) are annular.

7. The loudspeaker according to any one of claims 1-5, characterized in that, The magnetic circuit system (1) includes an outer washer (14), the middle part of which is connected to the side of the magnetic conductor (12) away from the diaphragm (22), and the outer periphery (122) of the outer washer (14) is connected to the side of the outer magnet (11) away from the diaphragm (22).

8. The loudspeaker according to any one of claims 1-5, characterized in that, The loudspeaker includes a bracket (3), the magnetic circuit system (1) and the vibration system (2) are disposed on the bracket (3), the diaphragm (22) includes a planar portion (221) in the middle and an arched portion (222) surrounding the periphery of the planar portion (221), the vibration unit (21) is disposed on the planar portion (221), the inner edge of the arched portion (222) is connected to the outer edge of the planar portion (221), and the outer edge of the arched portion (222) is connected to the bracket (3).

9. The loudspeaker according to any one of claims 1-5, characterized in that, The vibration unit (21) is located on the side of the diaphragm (22) facing the magnetic circuit system (1).

10. The loudspeaker according to any one of claims 1-5, characterized in that, The outer plane voice coil (213), the vertical voice coil (214), the first gap (1201) and the second gap (1202) are in the shape of a circular ring or a square ring.

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