CN204069321U - Electro-acoustic element - Google Patents

Electro-acoustic element Download PDF

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Publication number
CN204069321U
CN204069321U CN201420401903.6U CN201420401903U CN204069321U CN 204069321 U CN204069321 U CN 204069321U CN 201420401903 U CN201420401903 U CN 201420401903U CN 204069321 U CN204069321 U CN 204069321U
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China
Prior art keywords
acoustic
electro
frame
ring
hole
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CN201420401903.6U
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Chinese (zh)
Inventor
蔡斌
徐芸霞
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AAC Microtech Changzhou Co Ltd
AAC Optoelectronic Changzhou Co Ltd
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AAC Optoelectronic Changzhou Co Ltd
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Abstract

The utility model provides a kind of electro-acoustic element, it vibrational system comprising frame and be immobilizated in frame, described vibrational system comprises a centring disk and the vibrating diaphragm on centring disk that is sticked, described electro-acoustic element is provided with the through hole be positioned in frame, the bearing of trend of described through hole is perpendicular to the direction of vibration of vibrational system, described centring disk comprises the inner ring supporting vibrational system, be fixed on the outer shroud in frame and the some linking arms being connected described inner ring and outer shroud, two longitudinal end that described centring disk comprises two minor axis ends and is attached thereto, described linking arm comprises the first linking arm be positioned on minor axis end and the second linking arm be positioned in longitudinal end, described first linking arm is only positioned on the minor axis end of through hole side.Electro-acoustic element of the present utility model can improve the performance of product.

Description

Electro-acoustic element
[technical field]
The utility model relates to a kind of transducer, particularly relates to a kind of electro-acoustic element.
[background technology]
Along with the development of science and technology, the progress of society, electronic product obtains a large amount of popularizing, and then makes magnetic circuit system obtain a large amount of uses, and in order to obtain better enjoyment acoustically, the performance requirement of people to electro-acoustic element is more and more higher.
The electro-acoustic element of prior art generally comprises magnetic circuit system and the vibrational system for vibration sounding.In order to effectively utilize the inner space of electronic product, existing electro-acoustic element mostly is that sounding passage is vertical with the vibration sounding of vibrational system to be arranged, i.e. one of them side sounding of electro-acoustic element.Wherein, for the direct sounding in side or operatic tunes sounding can be set in electro-acoustic element side.But this structure can cause the inner acoustic resistance of electro-acoustic element uneven, less near sounding passage side acoustic resistance, comparatively large away from sounding passage side acoustic resistance, therefore vibrational system is easily vibrated imbalance and produces resonance, affects the acoustical behavior of electro-acoustic element.
Therefore, be necessary to provide a kind of new electro-acoustic element to solve the problem.
[utility model content]
The utility model object is the deficiency that the electro-acoustic element performance of solution said structure is not high, and provides a kind of electro-acoustic element that can enhance product performance.
The utility model is achieved through the following technical solutions:
A kind of electro-acoustic element, it vibrational system comprising frame and be immobilizated in frame, described vibrational system comprises a centring disk and the vibrating diaphragm on centring disk that is sticked, described electro-acoustic element is provided with the through hole be positioned in frame, the bearing of trend of described through hole is perpendicular to the direction of vibration of vibrational system, described centring disk comprises the inner ring supporting vibrational system, be fixed on the outer shroud in frame and the some linking arms being connected described inner ring and outer shroud, two longitudinal end that described centring disk comprises two minor axis ends and is attached thereto, described linking arm comprises the first linking arm be positioned on minor axis end and the second linking arm be positioned in longitudinal end, described first linking arm is only positioned on the minor axis end of through hole side.Preferably, described vibrating diaphragm comprises and being sticked in the fixed part of described outer shroud upper surface and the ring portion that is connected with fixed part, and the lower surface of described ring portion inward flange is sticked at the upper surface of described inner ring.
Preferably, described vibrating diaphragm comprises the ball top be sticked on ring.
Preferably, described electro-acoustic element also comprises a housing, and described housing comprises the host cavity and the operatic tunes communicated with host cavity of accommodating described frame.
Preferably, described frame is contained in described host cavity, and the inwall of described vibrating diaphragm and described housing forms an ante-chamber.
Preferably, described housing is provided with the barricade for separating host cavity and the operatic tunes, and described barricade arranges leak holes.
Preferably, described leak holes and described through hole are oppositely arranged.
Preferably, described housing comprises the lower house with diapire and side wall and lid and is connected on upper shell on lower house, and described barricade is positioned on described lower house.
Preferably, the side wall of described lower house is also provided with and is communicated with host cavity and extraneous phonate hole.
The beneficial effects of the utility model are: described first linking arm is only positioned at the side of centring disk near sounding passage, and the acoustic resistance of balance diverse location, improves the overall performance of electro-acoustic element, improve the reliability of product.
[accompanying drawing explanation]
Fig. 1 is the decomposed figure of the utility model electro-acoustic element;
Fig. 2 is the phantom of the utility model electro-acoustic element;
Fig. 3 is the structural representation of the utility model electro-acoustic element centring disk;
Fig. 4 is the exploded view of the utility model electro-acoustic element;
Fig. 5 is the incorporating aspects schematic diagram of the utility model electro-acoustic element.
[embodiment]
Below in conjunction with drawings and embodiments, the utility model is described in further detail.
As Fig. 1 to Fig. 3, described electro-acoustic element comprises frame 3, vibrational system 2 and the magnetic circuit system 1 with sidewall 31.
Described magnetic circuit system 1 is contained in described frame 3, and described vibrational system 2 is immobilizated on the sidewall 31 of described frame 3.The sidewall 31 of described frame 3 is provided with through hole 311.The bearing of trend of described through hole 311 is perpendicular to the direction of vibration of described vibrational system.
Magnetic circuit system 1 comprises magnetic bowl 13, and be sticked magnet steel on magnetic bowl 13 11 and being sticked at the pole piece 12 on magnet steel 11 surface.In the present embodiment, described magnetic bowl 13 is plate-like structure, and described magnet steel 11 comprises the main magnet steel 111 being attached at Ci Wan center and the secondary magnet steel 112 of ring-type arranged around main magnet steel 111.Certainly, in other execution modes selectable, described secondary magnet steel 112 also can be the magnet steel of multiple Split type structures, and it can be strip or other shapes; In addition, main magnet steel 111 is also not limited to only have one, in other execution modes selectable, also can have multiple main magnet steel and multiple secondary magnet steel supporting with it; In fact, main magnet steel is only had not have secondary magnet steel also can implement.
On the other side, in present embodiment, pole piece 12 comprises the main pole core 121 that is attached at main magnet steel 111 surface and is sticked at the consequent pole core 122 on secondary magnet steel 112 surface.Described main pole core 121 and consequent pole core 122 are made by permeability magnetic material, play magnetic conduction effect.Described magnetic bowl 13 can be also bowl structure or the slab construction being provided with sidewall, and can think that permeability magnetic material is made can be also non-magnet material, in other execution modes selectable, also can not be provided with magnetic bowl.
The voice coil loudspeaker voice coil 22 that described vibrational system 2 comprises vibrating diaphragm 21 and drives vibrating diaphragm 21 to vibrate.Form magnetic gap (non-label) between described main magnet steel 111 and secondary magnet steel 112, described voice coil loudspeaker voice coil 22 inserts in described magnetic gap.In the present embodiment, described electro-acoustic element 100 is single magnetic circuit system, and it has a voice coil loudspeaker voice coil 22, in fact, also when the quantity of main magnet steel is multiple, corresponding, and voice coil loudspeaker voice coil 22 quantity also can be multiple.
Described vibrating diaphragm 21 comprises ring portion 212, is sticked in ring portion 212 for adding the ball top 211 of strong vibration and being positioned at the fixed part 213 that vibrating diaphragm periphery is connected with described ring portion 212.Described vibrating diaphragm is ball top and ring part body structure in the present embodiment, and in other execution modes selectable, also can form for ball top and the compacting of ring portion integrative-structure, its principle is identical.
As shown in Figure 3, in the present embodiment, described electro-acoustic element comprises a centring disk 23 further, it linking arm 233 comprising inner ring 231, outer shroud 232 and be connected described inner ring 231 and outer shroud 232.Wherein, the upper surface of described inner ring 231 and the lower surface of ring portion 212 inward flange fit, and described outer shroud is fixed on the sidewall 31 of described frame.The lower surface of fixed part 213 is fitted on the outer shroud of described centring disk 23.Described centring disk 23 is FPC plate or latch plate, and in the present embodiment, be FPC plate, described voice coil loudspeaker voice coil 22 is fixed and is electrically connected to the lower surface of described centring disk 23.
As shown in Figure 4 and Figure 5, preferably, described electro-acoustic element also comprises a case.Described housing comprises one to be had the lower house 202 of diapire and side wall and covers the upper shell 201 be connected on lower house 202.Described lower house 202 and upper shell 201 form a host cavity and an operatic tunes 2020 jointly.Described frame 3 is housed in described host cavity.
Described lower house 202 is provided with the barricade 2021 for separating host cavity and the operatic tunes 2020.Described barricade is provided with leak holes 2022.Described leak holes is communicated with described sounding monomer 100 and the operatic tunes 2020.Described leak holes 2020 is oppositely arranged with described through hole 311 and forms leakage.Preferably, the side wall of described lower house is also provided with and is communicated with host cavity and extraneous phonate hole 2022.
As shown in Figure 3, described centring disk is string configuration, comprise two minor axis ends and two longitudinal end, in the present embodiment, described minor axis end is one end of close through hole and one end on the other side, and the other two ends connecting this two weeks sections are longitudinal end, it should be noted that, the length of described minor axis end and longitudinal end is not limited to shown on figure, and in other execution modes selectable, the length of described minor axis end also can be longer than described longitudinal end.Described linking arm 233 comprises the first linking arm 2331 be positioned on minor axis end and the second linking arm 2332 be positioned on major axis limit.Wherein the first linking arm 2331 is only positioned on the minor axis end of through hole side, and it is not provided with linking arm away from the minor axis end of through hole side.Because the acoustic resistance near sounding passage place is less, the acoustic resistance away from sounding passage place is comparatively large, does not arrange linking arm, can effectively reduce the resistance of vibration like this, ensure the stability of centring disk vibration in the larger position of acoustic resistance.
It should be noted that, described housing is not necessary, when described electro-acoustic element is provided with housing, described through hole and described leak holes form leakage, when electro-acoustic element is not provided with housing, as vocal hole between described through hole, its principle is all consistent.
The beneficial effects of the utility model are: described first linking arm is only positioned at the side of centring disk near sounding passage, and the acoustic resistance of balance diverse location, improves the overall performance of electro-acoustic element, improve the reliability of product.
Above-described is only execution mode of the present utility model; it should be pointed out that for the person of ordinary skill of the art at this, under the prerequisite not departing from the utility model creation design; improvement can also be made, but these all belong to protection range of the present utility model.

Claims (9)

1. an electro-acoustic element, it vibrational system comprising frame and be immobilizated in frame, described vibrational system comprises a centring disk and the vibrating diaphragm on centring disk that is sticked, it is characterized in that: described electro-acoustic element is provided with the through hole be positioned in frame, the bearing of trend of described through hole is perpendicular to the direction of vibration of vibrational system, described centring disk comprises the inner ring supporting vibrational system, be fixed on the outer shroud in frame and the some linking arms being connected described inner ring and outer shroud, two longitudinal end that described centring disk comprises two minor axis ends and is attached thereto, described linking arm comprises the first linking arm be positioned on minor axis end and the second linking arm be positioned in longitudinal end, described first linking arm is only positioned on the minor axis end of through hole side.
2. electro-acoustic element according to claim 1, is characterized in that: described vibrating diaphragm comprises and being sticked in the fixed part of described outer shroud upper surface and the ring portion that is connected with fixed part, and the lower surface of described ring portion inward flange is sticked at the upper surface of described inner ring.
3. electro-acoustic element according to claim 2, is characterized in that: described vibrating diaphragm comprises the ball top be sticked on ring.
4. electro-acoustic element according to claim 3, is characterized in that: described electro-acoustic element also comprises a housing, and described housing comprises the host cavity and the operatic tunes communicated with host cavity of accommodating described frame.
5. electro-acoustic element according to claim 4, is characterized in that: described frame is contained in described host cavity, and the inwall of described vibrating diaphragm and described housing forms an ante-chamber.
6. electro-acoustic element according to claim 4, is characterized in that: described housing is provided with the barricade for separating host cavity and the operatic tunes, and described barricade arranges leak holes.
7. electro-acoustic element according to claim 6, is characterized in that: described leak holes and described through hole are oppositely arranged.
8. electro-acoustic element according to claim 6, is characterized in that: described housing comprises the lower house with diapire and side wall and lid and is connected on upper shell on lower house, and described barricade is positioned on described lower house.
9. electro-acoustic element according to claim 8, is characterized in that: the side wall of described lower house is also provided with and is communicated with host cavity and extraneous phonate hole.
CN201420401903.6U 2014-07-18 2014-07-18 Electro-acoustic element Active CN204069321U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420401903.6U CN204069321U (en) 2014-07-18 2014-07-18 Electro-acoustic element

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104811857A (en) * 2015-04-30 2015-07-29 歌尔声学股份有限公司 Loudspeaker module
CN108650598A (en) * 2018-04-25 2018-10-12 歌尔股份有限公司 A kind of sound-producing device
CN109040906A (en) * 2018-08-14 2018-12-18 瑞声科技(新加坡)有限公司 Microphone device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104811857A (en) * 2015-04-30 2015-07-29 歌尔声学股份有限公司 Loudspeaker module
CN104811857B (en) * 2015-04-30 2018-09-07 歌尔股份有限公司 Loud speaker module
US10212510B2 (en) 2015-04-30 2019-02-19 Goertek Inc. Loudspeaker module
CN108650598A (en) * 2018-04-25 2018-10-12 歌尔股份有限公司 A kind of sound-producing device
CN109040906A (en) * 2018-08-14 2018-12-18 瑞声科技(新加坡)有限公司 Microphone device

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