CN210016629U - Electroacoustic device - Google Patents

Electroacoustic device Download PDF

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Publication number
CN210016629U
CN210016629U CN201920775057.7U CN201920775057U CN210016629U CN 210016629 U CN210016629 U CN 210016629U CN 201920775057 U CN201920775057 U CN 201920775057U CN 210016629 U CN210016629 U CN 210016629U
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CN
China
Prior art keywords
arm
voice coil
fixed
electroacoustic
vibrating diaphragm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201920775057.7U
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Chinese (zh)
Inventor
陈致远
吴树文
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AAC Technologies Pte Ltd
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AAC Technologies Pte Ltd
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Priority to CN201920775057.7U priority Critical patent/CN210016629U/en
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Publication of CN210016629U publication Critical patent/CN210016629U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model discloses an electroacoustic device, its vibration system that includes the basin frame and be fixed in the basin frame, vibration system is including being fixed in the vibrating diaphragm of basin frame, the elastic component that sets up with the vibrating diaphragm is relative and the interval. Wherein, the elastic component is including being fixed in the first arm of basin frame, is fixed in the second arm that the voice coil loudspeaker voice coil deviates from vibrating diaphragm one side and connects the bullet arm of first arm and second arm. The first arm includes relative and be fixed in the first end and the second end of basin frame, and the second arm includes relative and be fixed in the third end and the fourth end of voice coil loudspeaker voice coil, plays the arm including the first extension arm that extends to the first end from the fourth end, the second extension arm that extends to the third end from the second end and connect the linking arm of first extension arm and second extension arm, and the linking arm is at least partly for following the crooked convex arc of vibrating diaphragm vibration direction. The utility model discloses the setting of the arm structure of playing in the electroacoustic device for play the space of arm length between limited basin frame and voice coil loudspeaker voice coil and obtain extending, difficult fracture has guaranteed the good acoustic performance of electroacoustic device.

Description

Electroacoustic device
[ technical field ] A method for producing a semiconductor device
The utility model relates to an electroacoustic device especially relates to an electroacoustic device of application on portable electronic product.
[ background of the invention ]
In the process of rapid development of portable devices such as mobile phones, people have increasingly strong requirements on the functionality of products, and especially have more requirements on the sound production performance of the products, so that the development of electroacoustic devices applied to the products is also accelerated.
The related art electroacoustic device includes a frame and a vibration system fixed to the frame. The vibration system comprises a vibrating diaphragm fixed on the basin frame, an elastic part opposite to the vibrating diaphragm and arranged at an interval, and a voice coil elastically suspended between the vibrating diaphragm and the elastic part. Wherein, the elastic component is including the first arm that is fixed in the basin frame, be fixed in the second arm that the voice coil loudspeaker voice coil deviates from vibrating diaphragm one side and connect the first arm and the bullet arm of second arm.
However, in the electroacoustic device structure of the related art, the elastic arm structure in the elastic member is located in the same plane as the first arm and the second arm, and the first arm and the second arm are simply connected, so that the elastic arm has a short length, and cannot fully utilize the space between the voice coil and the frame, and the reliability of the elastic member is poor.
Therefore, there is a need to provide a new technical solution to overcome the above technical problems.
[ Utility model ] content
An object of the utility model is to provide a good reliability, longe-lived elastic component structure and have the electroacoustic device that improves the reliability.
The technical scheme of the utility model as follows:
an electroacoustic device comprises a basin frame and a vibration system fixed on the basin frame, wherein the vibration system comprises a vibrating diaphragm fixed on the basin frame, an elastic part arranged opposite to the vibrating diaphragm at intervals and a voice coil elastically suspended between the vibrating diaphragm and the elastic part, the elastic part comprises a first arm fixed on the basin frame, a second arm fixed on one side of the voice coil, which is far away from the vibrating diaphragm, and an elastic arm connected with the first arm and the second arm, and the first arm and the second arm are arranged opposite to each other at intervals;
the first arm comprises a first end and a second end which are opposite and fixed on the basin frame, the second arm comprises a third end and a fourth end which are opposite and fixed on the voice coil, the first end and the fourth end are positioned on the same side of a connecting line of the geometric center of the first arm and the geometric center of the second arm, and the second end and the third end are positioned on the other side of the connecting line of the geometric center of the first arm and the geometric center of the second arm;
the elastic arm comprises a first extension arm extending from the fourth end to the first end, a second extension arm extending from the second end to the third end and a connecting arm connected with the first extension arm and the second extension arm, the connecting arm is located between the first arm and the second arm and spaced from the first arm and the second arm, and at least part of the connecting arm is in the shape of an arc curved and convex in the vibration direction of the diaphragm.
Preferably, the first and second extension arms and the connecting arm have smooth transitions therebetween.
Preferably, the voice coil is of a rectangular structure, the second arm is fixed to a corner of the voice coil, and the third end and the fourth end are located on two adjacent sides of the corner of the voice coil respectively.
Preferably, the connecting arm is curved and convex toward the direction close to the diaphragm.
Preferably, the elastic member includes a plurality of corners symmetrically fixed to the voice coil.
Preferably, the second arm further comprises a pad extending from the third end to the frame; the first arm further comprises a connecting portion arranged on one side, away from the diaphragm, of the first arm and used for connecting an external electric signal.
Preferably, vibration system is still including pasting and locating the elastic component deviates from the auxiliary diaphragm of diaphragm one side, the auxiliary diaphragm is located including pasting the first laminating portion of first arm, pastes and locates the second laminating portion and the connection of second arm first laminating portion with the ring portion that rolls over of second laminating portion, roll over ring portion to deviating from the crooked protrusion of elastic component direction, the linking arm with roll over ring portion and just setting up the interval.
Preferably, the vibrating diaphragm is including the dome that is located central point, centers on the dome and with the book ring that the dome is connected, roll over the ring include with the intermediate part that the dome is connected, be fixed in the fixed part of basin frame and connection the intermediate part with the bulge of fixed part, the bulge is to being close to the crooked protrusion of voice coil loudspeaker voice coil direction.
Preferably, the elastic member is a flexible circuit board electrically connected to the voice coil.
The beneficial effects of the utility model reside in that: compared with the prior art, the utility model discloses an among the electroacoustic device, the space between basin frame and the voice coil loudspeaker voice coil has been fully utilized in the setting of the first extension arm, the second extension arm and the linking arm of bullet arm structure for the space of bullet arm length between limited basin frame and voice coil loudspeaker voice coil obtains extending. On this basis, the linking arm forms to being close to the convex arc structure of vibrating diaphragm direction bending for guaranteed the elastic component when the further extension of bullet arm length has realized the promotion of elastic component anti fatigue fracture ability to the stable support of voice coil loudspeaker voice coil when the voice coil loudspeaker voice coil vibrates, and better the interference of having avoided vibration system vibration in-process supplementary vibrating diaphragm and elastic component. And the good acoustic performance of the electroacoustic device is ensured.
[ description of the drawings ]
Fig. 1 is a three-dimensional structure diagram of the electroacoustic device of the present invention.
Fig. 2 is an exploded view of the stereo structure of the electroacoustic device of the present invention.
Fig. 3 is a combined view of the structure of the electroacoustic device of the present invention.
Fig. 4 is the combined structure diagram of the electroacoustic device elastic component, the auxiliary diaphragm and the voice coil.
Fig. 5 is the structure diagram of the elastic member and the auxiliary diaphragm of the electroacoustic device of the present invention.
[ detailed description ] embodiments
The present invention will be further described with reference to the accompanying drawings and embodiments.
As shown in fig. 1, the present invention provides an electroacoustic device 10, which comprises a frame 1, and a vibration system 2 and a magnetic circuit system 3 respectively fixed on the frame 1.
As shown in fig. 2, the vibration system 2 includes a diaphragm 21 fixed to the frame 1, an elastic member 22 disposed opposite to and spaced apart from the diaphragm 21, and a voice coil 23 elastically suspended between the diaphragm 21 and the elastic member 22. The diaphragm 21 includes a dome 211 at a central position, and a corrugated rim 212 surrounding the dome 211 and fixedly connected to the dome 211. The corrugated rim 212 includes an intermediate portion 212a connected to the dome 211, a fixing portion 212b fixed to the frame 1, and a protruding portion 212c connecting the intermediate portion 212a and the fixing portion 212 b. In the embodiment of the present application, the protrusion 212c is bent and protruded toward the direction close to the voice coil 23, so that the space inside the electroacoustic device can be reasonably utilized, and the volume of the electroacoustic device can be reduced. In other preferred embodiments of the present application, the protrusion 212c may also be a curved protrusion facing away from the voice coil 23.
As shown in fig. 2 to 5, the elastic member 22 includes a first arm 221 fixed to the frame 1, a second arm 222 fixed to a side of the voice coil away from the diaphragm 21, and a resilient arm 223 connecting the first arm 221 and the second arm 222, wherein the first arm 221 and the second arm 222 are disposed opposite to each other and spaced apart from each other.
Specifically, the first arm 221 includes a first end 221a and a second end 221b opposite and fixed to the frame 1, and the second arm 222 includes a third end 222a and a fourth end 222b opposite and fixed to the voice coil 23. The first end 221a and the fourth end 222b are located on the same side of the geometric center connecting line of the first arm 221 and the second arm 222, and the second end 221b and the third end 222a are located on the other side of the geometric center connecting line of the first arm 221 and the second arm 222. The first arm geometric center G1, the second arm geometric center G2 and the connection line are shown in FIG. 5.
The elastic arm 223 includes a first extension arm 223a extending from the fourth end 222b to the first end 221a, a second extension arm 223b extending from the second end 221b to the third end 222a, and a connection arm 223c connecting the first extension arm 223a and the second extension arm 223 b. Wherein the connecting arm 223c is located between the first arm 221 and the second arm 222 and spaced apart from the first arm 221 and the second arm 222. Further, the connecting arm 223c is at least partially in an arc shape curved and convex in the vibration direction of the diaphragm 21. Above-mentioned bullet arm 223 setting up has fully utilized the space between basin frame and the voice coil loudspeaker voice coil for play the arm length and obtain extending in the space between limited basin frame and the voice coil loudspeaker voice coil, the protruding arc structure setting of linking arm bending has guaranteed the elastic component when making bullet arm length further extension to the stable support of voice coil loudspeaker voice coil when the voice coil loudspeaker voice coil vibrates, has realized the promotion of the anti fatigue fracture ability of elastic component, has guaranteed the good reliability of electroacoustic device vibration in-process.
Further, the first extension arm 223a and the connection arm 223c are in smooth transition, and the second extension arm 223b and the connection arm 223c are in smooth transition. Preferably, the first extension arm 223a and the connection arm 223c are smoothly transited through arc bending, and further, the length of the spring arm is extended by using the space between the frame and the voice coil.
In the present embodiment, the voice coil 23 has a rectangular configuration, the second arm 222 is fixed to a corner of the voice coil 23, and the third end 222a and the fourth end 222b are respectively located on two adjacent sides of the corner of the voice coil 23. Further, the elastic member 22 includes a plurality of corners symmetrically fixed to the voice coil 23. So set up for the elastic component is more stable to the supporting effect of voice coil loudspeaker voice coil, prevents the horizontal hunting of voice coil loudspeaker voice coil effectively, improves the reliability of vibration system vibration, and then makes the reliability of electroacoustic device better.
Further, the second arm 222 further includes a pad 222c extending from the third end 222a to the frame 1, and the first arm 221 further includes a connection portion 221c disposed on a side of the first arm facing away from the diaphragm 21 for connecting an external electrical signal. Preferably, the elastic member 22 is a flexible circuit board, and the elastic member 22 and the voice coil 23 are electrically connected through the lead-out wire of the pad 222 c. The elastic member 22 is used to provide support for the voice coil 23, and elastically suspend the voice coil 23 between the diaphragm 21 and the elastic member 22; on the other hand, the voice coil 23 introduces an external electric signal.
In addition, the vibration system 2 further includes an auxiliary diaphragm 24 attached to a side of the elastic member 22 away from the diaphragm 21. The auxiliary diaphragm 24 includes a first attaching portion 241 attached to the first arm 221, a second attaching portion 242 attached to the second arm 222, and a loop portion 243 connecting the first attaching portion 241 and the second attaching portion 242. Wherein, the corrugated rim portion 243 is curved and protruded in a direction away from the elastic member 22, so as to provide a larger elastic support for the voice coil 23 and ensure a larger vibration space of the voice coil 23.
In this embodiment, further, the connecting arm 223c of the elastic member 22 is disposed opposite to and spaced from the edge 243, and the connecting arm 223c is curved and convex in a direction approaching the diaphragm 21. With this configuration, the bending direction of the corrugated portion 243 of the auxiliary diaphragm 24 is opposite to the bending direction of the connecting arm 223c of the elastic arm 22, so that the interference between the auxiliary diaphragm 24 and the elastic member 22 during the vibration of the vibration system is better avoided. And the good acoustic performance of the electroacoustic device is ensured.
As shown in fig. 2, the magnetic circuit system 3 includes a yoke 31 fixed to the frame 1, a main magnet 32 fixed to the yoke 31, and a sub magnet 33 disposed on opposite sides of the main magnet 32 with a gap therebetween and forming a magnetic gap with the main magnet 32. The voice coil 23 is elastically suspended between the diaphragm 21 and the elastic member 22 by the elastic member 22 and is interposed in the magnetic gap. In the present embodiment, the secondary magnetic steel 33 is formed by bending the edge of the yoke 31 toward the diaphragm 21, and forms a five-magnetic-steel magnetic structure together with the primary magnetic steel 32. The five-magnetic steel magnetic circuit structure enables the driving performance of the magnetic circuit system 3 to be better, and therefore the acoustic performance of the electroacoustic device 10 is further improved.
In order to further improve the performance of the magnetic circuit system 3, the magnetic lines of force of the magnetic circuit system 3 are cut by the voice coil 23 as much as possible to form a larger driving force, and the magnetic circuit system 3 further includes a main pole core 34 covering the main magnet 32. By arranging the main pole core 34, the magnetic lines of force of the magnetic circuit system 3 are more concentrated, and the magnetic performance of the magnetic circuit system 3 is further optimized, so that the acoustic performance of the electroacoustic device is further improved.
Compared with the prior art, the utility model discloses an among the electroacoustic device, the space between basin frame and the voice coil loudspeaker voice coil has been fully utilized in the setting of the first extension arm, the second extension arm and the linking arm of bullet arm structure for the space of bullet arm length between limited basin frame and voice coil loudspeaker voice coil obtains extending. On this basis, the linking arm forms to being close to the convex arc structure of vibrating diaphragm direction bending for guaranteed the elastic component when the further extension of bullet arm length has realized the promotion of elastic component anti fatigue fracture ability to the stable support of voice coil loudspeaker voice coil when the voice coil loudspeaker voice coil vibrates, and better the interference of having avoided vibration system vibration in-process supplementary vibrating diaphragm and elastic component. And the good acoustic performance of the electroacoustic device is ensured.
The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims (9)

1. The utility model provides an electroacoustic device, its includes the basin frame and is fixed in the vibration system of basin frame, vibration system is including being fixed in the vibrating diaphragm of basin frame, with relative and interval elastic component and the elasticity that sets up of vibrating diaphragm hang in the vibrating diaphragm with voice coil loudspeaker voice coil between the elastic component, its characterized in that: the elastic part comprises a first arm fixed on the basin frame, a second arm fixed on one side of the voice coil, which is far away from the vibrating diaphragm, and an elastic arm connecting the first arm and the second arm, wherein the first arm and the second arm are arranged oppositely and at intervals;
the first arm comprises a first end and a second end which are opposite and fixed on the basin frame, the second arm comprises a third end and a fourth end which are opposite and fixed on the voice coil, the first end and the fourth end are positioned on the same side of a connecting line of the geometric center of the first arm and the geometric center of the second arm, and the second end and the third end are positioned on the other side of the connecting line of the geometric center of the first arm and the geometric center of the second arm;
the elastic arm comprises a first extension arm extending from the fourth end to the first end, a second extension arm extending from the second end to the third end and a connecting arm connected with the first extension arm and the second extension arm, the connecting arm is located between the first arm and the second arm and spaced from the first arm and the second arm, and at least part of the connecting arm is in the shape of an arc curved and convex in the vibration direction of the diaphragm.
2. The electroacoustic device of claim 1, wherein: the first extension arm and the second extension arm are in smooth transition with the connecting arm.
3. The electroacoustic device of claim 1, wherein: the voice coil is of a rectangular structure, the second arm is fixed at the corner of the voice coil, and the third end and the fourth end are respectively located on two adjacent sides of the corner of the voice coil.
4. The electroacoustic device of claim 3, wherein: the connecting arm is bent and protruded towards the direction close to the diaphragm.
5. The electroacoustic device of claim 4, wherein: the elastic piece comprises a plurality of corners symmetrically fixed on the voice coil.
6. The electroacoustic device of claim 1, wherein: the second arm further comprises a pad extending from the third end toward the frame; the first arm further comprises a connecting portion arranged on one side, away from the diaphragm, of the first arm and used for connecting an external electric signal.
7. The electroacoustic device of claim 1, wherein: vibration system still locates including pasting the elastic component deviates from the supplementary vibrating diaphragm of vibrating diaphragm one side, supplementary vibrating diaphragm is located including pasting the first laminating portion of first arm, pastes and locates the second laminating portion and the connection of second arm first laminating portion with the ring portion that rolls over of second laminating portion, roll over ring portion to deviating from the crooked protrusion of elastic component direction, the linking arm with roll over ring portion and just setting up the interval.
8. The electroacoustic device of claim 1, wherein: the vibrating diaphragm centers on including the dome that is located central point and puts the dome and with roll over the ring that the dome is connected, roll over the ring include with the intermediate part that the dome is connected, be fixed in the fixed part of basin frame and connection the intermediate part with the bulge of fixed part, the bulge is to being close to the crooked protrusion of voice coil loudspeaker voice coil direction.
9. The electroacoustic device of claim 1, wherein: the elastic piece is a flexible circuit board electrically connected with the voice coil.
CN201920775057.7U 2019-05-27 2019-05-27 Electroacoustic device Expired - Fee Related CN210016629U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920775057.7U CN210016629U (en) 2019-05-27 2019-05-27 Electroacoustic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920775057.7U CN210016629U (en) 2019-05-27 2019-05-27 Electroacoustic device

Publications (1)

Publication Number Publication Date
CN210016629U true CN210016629U (en) 2020-02-04

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CN201920775057.7U Expired - Fee Related CN210016629U (en) 2019-05-27 2019-05-27 Electroacoustic device

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022000531A1 (en) * 2020-06-30 2022-01-06 瑞声声学科技(深圳)有限公司 Electroacoustic device
WO2022006929A1 (en) * 2020-07-06 2022-01-13 瑞声声学科技(深圳)有限公司 Loudspeaker
WO2022006930A1 (en) * 2020-07-06 2022-01-13 瑞声声学科技(深圳)有限公司 Loudspeaker

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022000531A1 (en) * 2020-06-30 2022-01-06 瑞声声学科技(深圳)有限公司 Electroacoustic device
WO2022006929A1 (en) * 2020-07-06 2022-01-13 瑞声声学科技(深圳)有限公司 Loudspeaker
WO2022006930A1 (en) * 2020-07-06 2022-01-13 瑞声声学科技(深圳)有限公司 Loudspeaker

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20200204

Termination date: 20210527

CF01 Termination of patent right due to non-payment of annual fee