CN209526840U - Loudspeaker and earphone - Google Patents

Loudspeaker and earphone Download PDF

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Publication number
CN209526840U
CN209526840U CN201822275073.8U CN201822275073U CN209526840U CN 209526840 U CN209526840 U CN 209526840U CN 201822275073 U CN201822275073 U CN 201822275073U CN 209526840 U CN209526840 U CN 209526840U
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CN
China
Prior art keywords
protrusion
magnet steel
loudspeaker
pole piece
top dome
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Active
Application number
CN201822275073.8U
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Chinese (zh)
Inventor
令狐荣林
张龙
董献杰
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AAC Technologies Pte Ltd
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AAC Technologies Pte Ltd
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Publication date
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Priority to CN201822275073.8U priority Critical patent/CN209526840U/en
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Publication of CN209526840U publication Critical patent/CN209526840U/en
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Abstract

The utility model provides a kind of loudspeaker and earphone, including frame, vibrational system and magnetic circuit system, the vibrational system includes the flexible circuit board of vibrating diaphragm, the voice coil of the driving diaphragm oscillations sounding and the resilient support voice coil, the magnetic circuit system includes magnetic bowl, the magnet steel being contained in the magnetic bowl and the pole piece being attached on the magnet steel, the vibrating diaphragm includes to the top dome protruded far from the magnet steel direction, and the magnet steel and the pole piece protrude to form protrusion to the direction of the top dome.The utility model has the beneficial effects that: magnet steel and pole piece protrude outward to form protrusion towards top dome, the space between top dome and magnet steel can be made full use of to increase the integral thickness of magnet steel and pole piece, to increase the magnetic induction intensity around voice coil, the BL value for promoting loudspeaker, promotes the sensitivity of earphone.

Description

Loudspeaker and earphone
[technical field]
The utility model relates to acoustic-electric field more particularly to a kind of loudspeakers and earphone.
[background technique]
The loudspeaker of the prior art, including vibrational system and magnetic circuit system, the vibrational system include vibrating diaphragm, voice coil and soft Property circuit board, the magnetic circuit system includes magnetic bowl, the magnet steel and pole piece for being fixed to the magnetic bowl, and the vibrational system is located at described Above magnetic circuit system and there are biggish gaps along the direction of vibration of loudspeaker.Existing loudspeaker, sensitivity and BL value are also Having space to be hoisted, (B represents magnetic induction intensity, and L is length of the electrified wire in magnetic field, and BL is magnetic induction intensity and is powered The product of length of the conducting wire in magnetic field).
[utility model content]
The purpose of this utility model is to provide a kind of loudspeakers for promoting BL value and sensitivity.
The technical solution of the utility model is as follows:
A kind of loudspeaker, including frame, vibrational system and magnetic circuit system are provided, the vibrational system includes vibrating diaphragm, driving The voice coil of the diaphragm oscillations sounding and the flexible circuit board of the resilient support voice coil, the magnetic circuit system include magnetic bowl, receive The magnet steel being dissolved in the magnetic bowl and the pole piece being attached on the magnet steel, the vibrating diaphragm include to far from the magnet steel side To the top dome of protrusion, the magnet steel and the pole piece protrude to form protrusion to the direction of the top dome.
Preferably, the protrusion includes towards the outer surface of the top dome, and the top dome includes towards the pole piece Inner surface, the shape of the outer surface are consistent with the shape of the inner surface.
Preferably, the protrusion include by the magnet steel towards prominent the first protrusion formed in the top dome direction and By the pole piece towards prominent the second protrusion formed in the top dome direction, second protrusion is protruded towards described first The side in portion is recessed with cavity, and first protrusion is contained in the cavity.Preferably, the magnet steel includes ontology and institute The first protrusion is stated, the ontology extends from first protrusion along the direction far from the pole piece, first protrusion Thickness gradually increased from the center position of periphery toward the magnet steel of first protrusion.
Preferably, the ontology and first protrusion are integrally formed.
Preferably, the pole piece has uniform thickness.
Preferably, the thickness of the pole piece is gradually increased from its periphery toward center position.
Preferably, the loudspeaker further includes skeleton, the skeleton be connected to the flexible circuit board and the vibrating diaphragm it Between, the voice coil is set on the skeleton lateral wall and is electrically connected the flexible circuit board, the voice coil and the flexible electrical Road plate is arranged along the direction of vibration interval of the loudspeaker.
Preferably, the skeleton is cylindric and surrounds the protrusion.
A kind of earphone, including ear casing and loudspeaker are provided, the loudspeaker is loudspeaker as described above.
The utility model has the beneficial effects that: magnet steel and pole piece protrude outward to form protrusion towards top dome, it can be abundant Using the space between top dome and magnet steel to increase the integral thickness of magnet steel and pole piece, so that the magnetic induction increased around voice coil is strong Degree, promotes the BL value of loudspeaker, promotes the sensitivity of earphone.
[Detailed description of the invention]
Fig. 1 is the decomposition diagram of the utility model loudspeaker.
Fig. 2 is the combination diagram of the loudspeaker of the utility model.
Fig. 3 is the cross-sectional view in Fig. 2 along line A-A.
Fig. 4 is the partial enlarged view in Fig. 3 at circle B.
Fig. 5 is the decomposition diagram of the magnetic circuit system of the utility model.
Fig. 6 is the decomposition diagram of the vibrational system of the utility model.
[specific embodiment]
The utility model is described in further detail with embodiment with reference to the accompanying drawing.
As shown in Figures 1 and 2, a kind of loudspeaker 100 provided according to an embodiment of the present invention, including frame 10, The magnetic circuit system 20 and vibrational system 30 being mounted in frame 10.
As shown in Fig. 1, Fig. 3 and Fig. 6, magnetic circuit system 20 includes magnetic bowl 21, the magnet steel 22 being housed in magnetic bowl 21 and is sticked In the pole piece 23 on magnet steel 22, vibrational system 30 includes vibrating diaphragm 31, voice coil 32 and flexible circuit board 33.Vibrating diaphragm 31 includes convex Top dome 311 out extends outwardly and fixes around top dome 311 and the interconnecting piece 312 that connect with top dome 311 and from interconnecting piece 312 To the ring portion 313 of frame 10.
Fig. 3 and Fig. 5 are please referred to, magnet steel 22 and pole piece 23 protrude to form protrusion 24 to 311 direction of top dome, and protrusion 24 wraps It includes towards the outer surface of top dome 311 241 (i.e. the top surface of protrusion 24 in Fig. 3), top dome 311 is known as interior table towards the face of pole piece 23 Face 314 (i.e. the bottom surface of top dome 311 in Fig. 3).The shape of outer surface 241 is consistent with the shape of inner surface 314, thus the two it Between form uniform spacing.Preferably, outer surface 241 is less than the amplitude of vibrational system 30 at a distance from inner surface 314, to avoid Top dome 311 encounters pole piece 23 in vibration processes.
As shown in Fig. 1, Fig. 3, Fig. 5 and Fig. 6, it is preferable that protrusion 24 protrudes shape towards 311 direction of top dome including magnet steel 22 At the first protrusion 221 and pole piece 23 towards prominent the second protrusion 231 formed in 311 direction of top dome, the second protrusion 231 Cavity 232 is recessed with towards the side of the first protrusion 221, the shape adaptation of the shape of cavity 232 and the first protrusion 221, First protrusion 221 is contained in cavity 232.Further, magnet steel 22 including the first protrusion 221 and is located at the first protrusion The ontology 222 of 221 lower sections, the thickness of the first protrusion 221 gradually increase from 221 periphery of the first protrusion toward 22 center position of magnet steel Add so that the thickness of magnet steel 22 is gradually increased from its periphery toward center position.Preferably, the first protrusion 221 and ontology 222 are integrally formed, and optionally, the first protrusion 221 and ontology 222 can also be separated after forming and be fixed together again.Magnet steel 22 Form the top dome shape protrusion 24 consistent with 311 shape of top dome with pole piece 23, can make full use of the space below top dome 311 with Increase the thickness of magnet steel 22 to increase the magnetic induction intensity of magnet steel 22, the BL value of loudspeaker is promoted, to promote sensitivity.
Loudspeaker 100 further includes upper clamp plate 25, and upper clamp plate 25 is located at 21 top of magnetic bowl, and flexible circuit board 33 is located at magnetic bowl 21 Between upper clamp plate 25, upper clamp plate 25 is cyclic structure, is centered around 23 periphery of pole piece and with pole piece 23 perpendicular to loudspeaker 100 Direction of vibration interval setting.
With reference to shown in Fig. 1, Fig. 3, Fig. 4 and Fig. 6, it is preferable that loudspeaker 100 further includes skeleton 34, and skeleton 34 is along loudspeaking The both ends of the direction of vibration of device 100 are respectively fixedly connected with to flexible circuit board 33 and vibrating diaphragm 31, and voice coil 32 is set in outside skeleton 34 On side wall and it is electrically connected flexible circuit board 33.Voice coil 32 is set with flexible circuit board 33 along the direction of vibration interval of loudspeaker 100 It sets, voice coil 32 and upper clamp plate 25 are arranged perpendicular to the direction of vibration interval of loudspeaker 100, vibrate convenient for voice coil 32.Further, Skeleton 34 is cylindrical shape and is centered around 24 periphery of protrusion, between the direction of vibration of skeleton 34 and protrusion 24 along loudspeaker 100 Every setting, so that skeleton 34 can opposite magnet steel 22 and the movement of pole piece 23.
Flexible circuit board 33 is located at the top of magnetic bowl 21, along the direction of vibration perpendicular to loudspeaker 100 include inner end 331 and Outer end 332, inner end 331 are set in 22 outside of magnet steel and fix with skeleton 34 so as to transport with skeleton 34 with respect to magnet steel 22 Dynamic, the outer end 332 of flexible circuit board 33 extends out to 21 outside of magnetic bowl and fixes with upper clamp plate 25.Flexible circuit board 33 with The side that magnetic bowl 21 connects is equipped with auxiliary vibrating diaphragm 35, and vibrating diaphragm 35 is assisted to flexibly support voice coil 32 together with flexible circuit board 33.On Clamping plate 25 and flexible circuit board 33 are arranged along the direction of vibration interval of loudspeaker 100, can avoid flexible circuit board 33 with voice coil Upper clamp plate 25 is got in 32 vibration processes and impaired problem.
The utility model also provides a kind of earphone, including ear casing (not shown) and loudspeaker 100, and loudspeaker 100 is such as The upper loudspeaker 100.
In the utility model, magnet steel 22 and pole piece 23 protrude towards 311 direction of top dome and form protrusion 24, can make full use of Space below top dome 311 is to increase the thickness of magnet steel 22 to increase the magnetic induction intensity of magnet steel 22, to promote loudspeaker BL value, promoted sensitivity.
In the above-described embodiments, pole piece 23 has uniform thickness.It is to be appreciated that the thickness of pole piece 23 can also be from its week Edge is gradually increased toward center position, to increase its magnetic conduction ability, to further promote the BL value and sensitivity of loudspeaker.
It should be noted that in the utility model embodiment institute it is directional instruction (such as up, down, left, right, before and after, Inside and outside, top, bottom ...) it is only used for explaining in the opposite position under a certain particular pose (as shown in the picture) between each component Relationship etc. is set, if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
It should also be noted that, when an element is referred to as being " fixed " or " disposed " on another element, which can Directly on the other element or may be simultaneously present centering elements.When an element referred to as " connects " another yuan Part, it, which can be, is directly connected to another element or may be simultaneously present centering elements.
Above-described is only the embodiments of the present invention, it should be noted here that for the ordinary skill of this field For personnel, without departing from the concept of the present invention, improvement can also be made, but these belong to it is practical Novel protection scope.

Claims (10)

1. a kind of loudspeaker, including frame, vibrational system and magnetic circuit system, the vibrational system includes vibrating diaphragm, the driving vibration The voice coil of film vibration sounding and the flexible circuit board of the resilient support voice coil, the magnetic circuit system include magnetic bowl, are contained in institute The pole piece stating the magnet steel in magnetic bowl and being attached on the magnet steel, which is characterized in that the vibrating diaphragm includes to far from the magnetic The top dome of steel direction protrusion, the magnet steel and the pole piece protrude to form protrusion to the direction of the top dome.
2. loudspeaker according to claim 1, it is characterised in that: the protrusion includes the appearance towards the top dome Face, the top dome include towards the inner surface of the pole piece, and the shape of the outer surface is consistent with the shape of the inner surface.
3. loudspeaker according to claim 1, it is characterised in that: the protrusion includes by the magnet steel towards the ball Top direction protrudes the first protrusion formed and protrudes the second protrusion formed, institute towards the top dome direction by the pole piece The side for stating the second protrusion towards first protrusion is recessed with cavity, and first protrusion is contained in the cavity It is interior.
4. loudspeaker according to claim 3, it is characterised in that: the magnet steel includes ontology and first protrusion, The ontology extends from first protrusion along the direction far from the pole piece, and the thickness of first protrusion is from described the The center position of the periphery of one protrusion toward the magnet steel gradually increases.
5. loudspeaker according to claim 4, it is characterised in that: the ontology and first protrusion are integrally formed.
6. loudspeaker according to any one of claims 1 to 3, it is characterised in that: the pole piece has uniform thickness.
7. loudspeaker according to any one of claims 1 to 3, it is characterised in that: the thickness of the pole piece is past from its periphery Center position gradually increases.
8. loudspeaker according to any one of claims 1 to 5, it is characterised in that: the loudspeaker further includes skeleton, described Skeleton is connected between the flexible circuit board and the vibrating diaphragm, and the voice coil is set on the skeleton lateral wall and is electrically connected The flexible circuit board, the voice coil and the flexible circuit board are arranged along the direction of vibration interval of the loudspeaker.
9. loudspeaker according to claim 8, it is characterised in that: the skeleton is cylindric and surrounds the protrusion.
10. a kind of earphone, including ear casing and loudspeaker, the loudspeaker is loudspeaking as described in any one of claim 1 to 9 Device.
CN201822275073.8U 2018-12-29 2018-12-29 Loudspeaker and earphone Active CN209526840U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201822275073.8U CN209526840U (en) 2018-12-29 2018-12-29 Loudspeaker and earphone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201822275073.8U CN209526840U (en) 2018-12-29 2018-12-29 Loudspeaker and earphone

Publications (1)

Publication Number Publication Date
CN209526840U true CN209526840U (en) 2019-10-22

Family

ID=68228167

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201822275073.8U Active CN209526840U (en) 2018-12-29 2018-12-29 Loudspeaker and earphone

Country Status (1)

Country Link
CN (1) CN209526840U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021128046A1 (en) * 2019-12-25 2021-07-01 瑞声声学科技(深圳)有限公司 Sound production device
WO2021232486A1 (en) * 2020-05-22 2021-11-25 瑞声声学科技(深圳)有限公司 Wireless earphone
WO2021248533A1 (en) * 2020-06-10 2021-12-16 瑞声声学科技(深圳)有限公司 Sound generating apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021128046A1 (en) * 2019-12-25 2021-07-01 瑞声声学科技(深圳)有限公司 Sound production device
WO2021232486A1 (en) * 2020-05-22 2021-11-25 瑞声声学科技(深圳)有限公司 Wireless earphone
WO2021248533A1 (en) * 2020-06-10 2021-12-16 瑞声声学科技(深圳)有限公司 Sound generating apparatus

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