Loudspeaker

Abstract

A loudspeaker (100), comprising a basket (1), and a magnetic circuit system (3) and a vibration system (2) affixed to the basket (1). The magnetic circuit system (3) comprises a magnetic bowl (31), a main magnetic steel (32) attached above the magnetic bowl (31), and an auxiliary magnetic steel (33) spaced apart from the main magnetic steel (32). The space between the main magnetic steel (32) and the auxiliary magnetic steel (33) forms a magnet gap (35). The vibration system (2) comprises a diaphragm (21) fixedly disposed on the basket (1), and a voice coil (22) which is suspended in the magnet gap (35) and drives the diaphragm (21) to vibrate. The voice coil (22) comprises a first main body portion (221), and a first protruding portion (222) extending from a part of the first main body portion (221) to the magnet gap. The auxiliary magnetic steel (33) comprises a second main body portion (331), and a second protruding portion (332) extending from a part of the second main body portion (331) to the magnet gap (35). The first protruding portion (222) and the second protruding portion (332) are arranged staggered in the magnet gap (35). The auxiliary magnetic steel (33) is provided with a partial protrusion in the magnet gap (35) to reduce a partial magnet gap (35), so as to increase the driving force of the loudspeaker (100) and bring greater output sensitivity.

Description

A speaker Technical Field

[0001] The present invention relates to the field of loudspeakers, and in particular to a magnetic circuit system of a loudspeaker. Background Art

[0002] With the rapid development of mobile communication technology in recent years, consumers are increasingly using mobile communication devices with voice functions, such as mobile phones, handheld game consoles, laptops, multimedia players, and other devices capable of communicating via public or private communication networks. As a voice playback device, the internal magnetic circuit system of the speaker is directly related to the improvement of the product's acoustic performance.

[0003] The magnetic gap of the speaker module in the existing technology is constant on the two parallel sides, and the upper splint and the magnet are parallel to the voice coil. However, the voice coil has a problem of excessive wall thickness, which affects the magnetic gap, requiring the magnetic gap of the entire side to be increased at the same time. Therefore, the magnetic gap of most voice coils in the existing speaker structure is large, resulting in insufficient driving force.

[0004] Therefore, it is necessary to provide a new speaker to solve the above problems. Technical issues

[0005] An object of the present invention is to provide a loudspeaker with large driving force and high output sensitivity. Technical Solutions

[0006] The technical solution of the present invention is as follows: The present invention provides a loudspeaker, comprising a basin, a magnetic circuit system and a vibration system fixed to the basin, the magnetic circuit system comprising a magnetic bowl, a main magnet attached to the magnetic bowl, and a secondary magnet spaced apart from the main magnet, the space between the main magnet and the secondary magnet forming a magnetic gap, the vibration system comprising a diaphragm fixed to the basin and a voice coil suspended in the magnetic gap and driving the diaphragm to vibrate, characterized in that: the voice coil comprises a first main body and a first protrusion extending from a part of the first main body to the magnetic gap, the secondary magnet comprises a second main body and a second protrusion extending from a part of the second main body to the magnetic gap, the first protrusion and the second protrusion being staggered in the magnetic gap.

[0007] Preferably, the first main body portion includes an inner ring portion and an outer ring portion extending from a side of the inner ring portion away from the diaphragm toward the secondary magnetic steel, and the first protrusion is located on the outer ring portion.

[0008] Preferably, the secondary magnet includes a top portion close to the diaphragm and a bottom portion opposite to the top portion, and the second protrusion extends from the top portion to the bottom portion.

[0009] Preferably, there are at least two second protrusions, and the second protrusions are arranged at intervals in the magnetic gap.

[0010] The present invention also provides a technical solution as follows: a loudspeaker, comprising a basin, a magnetic circuit system and a vibration system fixed to the basin, the magnetic circuit system comprising a magnetic bowl, a main magnet attached to the magnetic bowl, a secondary magnet spaced apart from the main magnet, and an upper clamping plate arranged above the secondary magnet, the space between the main magnet and the secondary magnet forming a magnetic gap, the vibration system comprising a diaphragm fixed to the basin and a voice coil suspended in the magnetic gap and driving the diaphragm to vibrate, characterized in that: the voice coil comprises a first main body and a first protrusion extending from a part of the first main body to the magnetic gap, the upper clamping plate comprises a third main body and a third protrusion extending from a part of the third main body to the magnetic gap, the first protrusion and the third protrusion being staggered in the magnetic gap.

[0011] Preferably, the first main body portion includes an inner ring portion and an outer ring portion extending from a side of the inner ring portion away from the diaphragm toward the secondary magnetic steel, and the first protrusion is located on the outer ring portion.

[0012] Preferably, the auxiliary magnetic steel includes a second main body and a second protrusion extending from a part of the second main body toward the magnetic gap, the second protrusion is located in the magnetic gap, and the second protrusion is staggered with the first protrusion.

[0013] Preferably, the secondary magnet includes a top portion close to the diaphragm and a bottom portion opposite to the top portion, and the second protrusion extends from the top portion to the bottom portion.

[0014] Preferably, the second protrusion is parallel to and aligned with the third protrusion.

[0015] Preferably, there are at least two third protrusions, and the third protrusions are arranged at intervals in the magnetic gap. Beneficial effects

[0016] The present invention is beneficial in that: the present invention provides a loudspeaker, and compared with the prior art, the local magnetic gap of the magnetic circuit system in the loudspeaker of the present invention is reduced, thereby increasing the driving force of the loudspeaker and bringing greater output sensitivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can derive other drawings based on these drawings without inventive efforts.

[0018] in:

[0019] FIG1 is a schematic diagram of the three-dimensional structure of a loudspeaker provided in an embodiment of the present invention;

[0020] FIG2 is a schematic diagram of the three-dimensional structure of the loudspeaker shown in FIG1 without the diaphragm;

[0021] FIG3 is an exploded view of the speaker shown in FIG1 ;

[0022] FIG4 is a cross-sectional view of the loudspeaker shown in FIG1 along line AA. Modes for Carrying Out the Invention

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Please refer to Figures 1-4 at the same time. The present invention provides a speaker 100, which includes a basin frame 1, a vibration system 2 fixed to the basin frame 1, a magnetic circuit system 3 and an isolation member 4. The isolation member 4 includes a avoidance portion 41 fixed to the basin frame 1 and a leakage hole 42 for adjusting the internal air pressure of the speaker 100.

[0025] The vibration system 2 includes a diaphragm 21 fixed to the basin frame 1 and a voice coil 22 for driving the diaphragm 21 to vibrate. The diaphragm 21 includes a dome 211 and a folding ring 212 arranged around the dome 211. The folding ring 212 includes a first fixing portion 2121 fixedly connected to the dome 211, a second fixing portion 2122 fixedly connected to the basin frame 1 away from the dome 211, and an arc-shaped fixing portion 2121 connecting the first fixing portion 2121 and the second fixing portion 2122. The folding ring portion 2123, the dome 211 includes a recessed portion 2111 and a planar portion 2112 arranged around the recessed portion 2111, the voice coil 22 includes a first main body portion 221 and a first protruding portion 222 extending from the first main body portion 221, the first main body portion 221 includes an inner ring portion 2211 and an outer ring portion 2212 extending from the side of the inner ring portion 2211 away from the diaphragm 21, and the first protruding portion 222 is located on the outer ring portion 2212.

[0026] The magnetic circuit system 3 includes a magnetic bowl 31, a main magnet 32 ​​located above the magnetic bowl 31, a secondary magnet 33 spaced apart from the main magnet 32, and a main pole core 34 attached to the main magnet 32. The main magnet 32 ​​and the secondary magnet 33 form a magnetic gap 35. The secondary magnet 33 includes a second main body 331 and a second protrusion 332 extending from a part of the second main body 331 to the magnetic gap 35. The first protrusion 222 of the voice coil 22 and the second protrusion 332 of the secondary magnet 33 are staggered in the magnetic gap 35. There are at least two second protrusions 332 that are spaced apart in the magnetic gap 35.

[0027] The secondary magnet 33 further includes a top portion 301 close to the diaphragm 21 and a bottom portion 302 opposite to the top portion 301 . The second protrusion 332 extends from the top portion 301 to the bottom portion 302 .

[0028] The magnetic circuit system 3 also includes an upper clamping plate 36, which is located above the auxiliary magnet 33. The upper clamping plate 36 includes a third main body 361 and a third protrusion 362 extending from a part of the third main body 361 to the magnetic gap 35. The third protrusion 362 is staggered with the first protrusion 222 in the magnetic gap 35. The third protrusion 362 is parallel and aligned with the second protrusion 332. There are at least two third protrusions 362 and they are spaced apart in the magnetic gap 35. The upper clamping plate also includes an avoidance hole 363.

[0029] The loudspeaker 100 further includes an elastic connector 5 for connecting the voice coil 22 to an external circuit. The elastic connector 5 is located in the accommodation space of the avoidance hole 363 .

[0030] In this embodiment, the second protrusion 332 is provided on the secondary magnetic steel 33 and the third protrusion 362 is provided on the upper clamping plate 36. In other embodiments, the second protrusion 332 can be provided on the secondary magnetic steel 33 alone or the third protrusion 362 can be provided on the upper clamping plate 36 alone.

[0031] Compared with the related art, the present invention provides a loudspeaker, comprising a basin, a magnetic circuit system and a vibration system fixed to the basin, the magnetic circuit system comprising a magnetic bowl, a main magnet attached to the magnetic bowl, and a secondary magnet spaced apart from the main magnet, the space between the main magnet and the secondary magnet forming a magnetic gap, the vibration system comprising a diaphragm fixed to the basin and a voice coil suspended in the magnetic gap and driving the diaphragm to vibrate, the voice coil comprising a first main body and a first protrusion extending from a part of the first main body to the magnetic gap, the secondary magnet comprising a second main body and a second protrusion extending from a part of the second main body to the magnetic gap, the first protrusion and the second protrusion being staggered in the magnetic gap.

[0032] The present invention also provides a loudspeaker, comprising a basin, a magnetic circuit system and a vibration system fixed to the basin, the magnetic circuit system comprising a magnetic bowl, a main magnet attached to the magnetic bowl, a secondary magnet spaced apart from the main magnet, and an upper clamping plate arranged above the secondary magnet, the space between the main magnet and the secondary magnet forming a magnetic gap, the vibration system comprising a diaphragm fixed to the basin and a voice coil suspended in the magnetic gap and driving the diaphragm to vibrate, characterized in that: the voice coil comprises a first main body and a first protrusion extending from a part of the first main body to the magnetic gap, the upper clamping plate comprises a third main body and a third protrusion extending from a part of the third main body to the magnetic gap, the first protrusion and the third protrusion being staggered in the magnetic gap.

[0033] The present invention designs the auxiliary magnetic steel and / or the upper clamping plate to be locally convex within the magnetic gap range to reduce the local magnetic gap, thereby increasing the driving force of the loudspeaker and bringing about greater output sensitivity.

[0034] The above description is only an embodiment of the present invention. It should be pointed out that those skilled in the art can make improvements without departing from the creative concept of the present invention, but these improvements all fall within the scope of protection of the present invention.

Claims

1. A loudspeaker, comprising a chassis, a magnetic circuit system fixed to the chassis, and a vibration system. The magnetic circuit system includes a magnetic bowl, a main magnet attached above the magnetic bowl, and a secondary magnet spaced from the main magnet. A magnetic gap is formed in the space between the main magnet and the secondary magnet. The vibration system includes a diaphragm fixed to the chassis and a voice coil suspended in the magnetic gap and driving the diaphragm to vibrate, characterized in that: The voice coil includes a first main body portion and a first protruding portion extending from a part of the first main body portion toward the magnetic gap. The auxiliary magnet includes a second main body portion and a second protruding portion extending from a part of the second main body portion toward the magnetic gap. The first protruding portion and the second protruding portion are staggeredly arranged in the magnetic gap.

2. The loudspeaker according to claim 1, wherein: The first main body portion includes an inner ring portion and an outer ring portion extending from a side of the inner ring portion away from the diaphragm toward the auxiliary magnet. The first protruding portion is located on the outer ring portion.

3. The loudspeaker according to claim 2, wherein: The auxiliary magnet includes a top portion close to the diaphragm and a bottom portion opposite to the top portion. The second protruding portion extends from the top portion to the bottom portion.

4. The loudspeaker according to claim 1, characterized in that: There are at least two second protruding portions, and the second protruding portions are spaced apart in the magnetic gap.

5. A loudspeaker, comprising a chassis, a magnetic circuit system fixed to the chassis, and a vibration system. The magnetic circuit system includes a magnetic bowl, a main magnet attached above the magnetic bowl, a secondary magnet arranged at an interval from the main magnet, and an upper yoke arranged above the secondary magnet. A magnetic gap is formed in the space between the main magnet and the secondary magnet. The vibration system includes a diaphragm fixed to the chassis and a voice coil suspended in the magnetic gap and driving the diaphragm to vibrate, characterized in that: The voice coil includes a first main body portion and a first protruding portion extending from a part of the first main body portion toward the magnetic gap. The upper clamping plate includes a third main body portion and a third protruding portion extending from a part of the third main body portion toward the magnetic gap. The first protruding portion and the third protruding portion are staggeredly arranged in the magnetic gap.

6. The loudspeaker according to claim 5, characterized in that: The first main body portion includes an inner ring portion and an outer ring portion extending from a side of the inner ring portion away from the diaphragm toward the auxiliary magnet. The first protruding portion is located on the outer ring portion.

7. The loudspeaker according to claim 5, wherein: The auxiliary magnet includes a second main body portion and a second protruding portion extending from a part of the second main body portion toward the magnetic gap. The second protruding portion is located in the magnetic gap and is staggeredly arranged with the first protruding portion.

8. The loudspeaker according to claim 7, characterized in that: The auxiliary magnet includes a top portion close to the diaphragm and a bottom portion opposite to the top portion. The second protruding portion extends from the top portion to the bottom portion.

9. The loudspeaker according to claim 7, wherein: The second protruding portion and the third protruding portion are parallel and aligned.

10. The loudspeaker according to claim 5, characterized in that: There are at least two third protruding portions, and the third protruding portions are spaced apart in the magnetic gap.

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