CN204810521U - Electroacoustic device - Google Patents
Electroacoustic device Download PDFInfo
- Publication number
- CN204810521U CN204810521U CN201520477357.9U CN201520477357U CN204810521U CN 204810521 U CN204810521 U CN 204810521U CN 201520477357 U CN201520477357 U CN 201520477357U CN 204810521 U CN204810521 U CN 204810521U
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- China
- Prior art keywords
- electro
- acoustic element
- frame
- magnet steel
- base plate
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- Expired - Fee Related
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- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The utility model provides an electroacoustic device, it includes the basin frame that has a lateral wall that link up about in the of one, accept magnetic circuit and vibration system in the basin frame, vibration system includes the vibrating diaphragm, and magnetic circuit includes that magnet steel and a fixing enclose into the magnetism bowl of inner chamber in basin rest base portion and with basin frame and vibrating diaphragm jointly, the magnetism bowl includes a bottom plate that is used for placing the magnet steel, form between basin frame lateral wall and the magnetism bowl bottom plate one and outside ambient air link up reveal the hole, it is equipped with a damping fin to paste in the magnetism bowl, the damping fin covers from electroacoustic device is inside reveal the hole, formation no. 1 and the communicating depressed part of inner chamber between bottom plate and the magnet steel, the one end centre gripping of damping fin is in in the depressed part. The utility model discloses an electroacoustic device can improve reliability of an item.
Description
[technical field]
The utility model relates to a kind of electro-acoustic element, especially a kind of Minimized electro-acoustic device.
[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.
Correlation technique electro-acoustic element generally include frame and and the magnetic circuit system that is contained in frame and vibrational system; usual vibrational system comprises one and is retained on vibrating diaphragm in frame; vibrating diaphragm is when vibrating; gas in compression in electro-acoustic element chamber; usual meeting arranges leak holes on electro-acoustic element, and the damping fin that is sticked in leak holes is to play effect that is dust-proof and raising acoustic resistance.The damping fin of prior art is easy to produce the phenomenons such as warpage, can have a strong impact on the reliability of product.
Therefore, be necessary in fact to propose a kind of new electro-acoustic element to overcome the problems referred to above.
[utility model content]
The technical problem that the utility model need solve is to provide a kind of electro-acoustic element with good acoustic performance.
According to above-mentioned technical problem, devise a kind of electro-acoustic element, it comprises the frame with sidewall of a up/down perforation, be contained in the magnetic circuit system in frame and vibrational system, described vibrational system comprises vibrating diaphragm, magnetic circuit system comprises magnet steel and and to be immobilizated in bottom frame and jointly to surround the magnetic bowl of inner chamber with frame and vibrating diaphragm, described magnetic bowl comprises one for placing the base plate of magnet steel, a leak holes through with ambient air outside is formed between described frame sidewall and magnetic bowl base plate, be sticked in described magnetic bowl a damping fin, described damping fin covers described leak holes from electro-acoustic element inside, described base plate with form a depressed part communicated with inner chamber between magnet steel, one end of described damping fin is clamped in described depressed part.
Preferably, described depressed part is arranged on magnetic bowl, is recessed to form to away from magnet steel direction from the surface that base plate contacts with magnet steel.
Preferably, described depressed part is arranged on magnet steel, is recessed to form to away from base plate direction from the surface of magnet steel and contacts baseplate.
Preferably, described magnetic bowl is a string configuration, and extend to form from two major axis limits of base plate the sidewall abutted with frame inwall to vibrating diaphragm direction, two minor axis limits are provided with the first notch part to caving in away from frame sidewall direction.
Preferably, described base plate extend to form outside side plate with frame bottom fixing fixed part.
Preferably, the bottom of described frame sidewall is provided with for holding the draw-in groove fixing this fixed part.
Preferably, described frame sidewall is provided with second notch part that arrange corresponding to the first notch part, described first notch part and the second notch part form described leak holes jointly, described electro-acoustic element inner chamber is communicated with bottom electro-acoustic element by the first notch part, is communicated with electro-acoustic element both sides by the second breach.
Preferably, described damping fin comprises the Part I inserting described depressed part and the Part II covering leak holes.
Preferably, the end winding support of described Part II is in described second notch part.
Preferably, the magnet steel lower surface forming described depressed part is positioned at same level with the frame sidewall lower surface forming described second breach.
Electro-acoustic element of the present utility model arranges depressed part between magnetic bowl and magnet steel, and damping fin inserts this depressed part, can prevent damping fin from producing warpage, improve the reliability of product.The utility model electro-acoustic element can improve the reliability of product.
[accompanying drawing explanation]
Fig. 1 is the cutaway view of the utility model electro-acoustic element;
Fig. 2 is the exploded view of Fig. 1;
Fig. 3 is the incorporating aspects schematic diagram of the utility model electro-acoustic element magnetic circuit system;
Fig. 4 is the utility model electro-acoustic element combination schematic diagram;
Fig. 5 is the schematic diagram of the utility model electro-acoustic element frame;
Fig. 6 is the schematic diagram of the utility model electro-acoustic element magnetic bowl.
[embodiment]
Below in conjunction with drawings and embodiments, the utility model is described in further detail.
As depicted in figs. 1 and 2, the utility model electro-acoustic element comprises and having by the frame 3 of up/down perforation, the vibrational system 2 that is contained in the magnetic circuit system 1 in frame 3 and is immobilizated in frame 3.
As shown in Figure 2, vibrational system 2 comprises the voice coil loudspeaker voice coil 22 being sticked and vibrating at vibrating diaphragm 21 and the driving vibrating diaphragm 21 of frame.Further, described vibrational system 2 comprises the oscillating plate 23 for strengthening vibrating diaphragm 21 vibration that is attached at vibrating diaphragm 21 surface.In the present embodiment, be also provided with lid to be connected in frame 3 and to be sticked mutually the protecgulum 4 shielded with vibrating diaphragm 21.
As shown in Figure 3, magnetic circuit system 1 comprises one and is held in magnetic bowl 13 bottom frame, and described magnetic bowl 13 and frame 3 and vibrating diaphragm 21 surround the inner chamber of electro-acoustic element jointly.Magnetic circuit system 1 comprises further and is arranged on magnet steel in magnetic bowl 13 11 and the pole piece 12 on magnet steel 11 that is sticked, wherein magnet steel 11 and pole piece 12 at least one be permanent magnet, in the present embodiment, magnet steel 11 is permanent magnet, pole piece 12 only plays magnetic conduction effect, certainly, in other execution modes selectable, also can be permanent magnet, also can implement.
Described frame 3 is the frame structure of the up/down perforation surrounded by sidewall 31, and described vibrating diaphragm 21 is sticked at the top of frame sidewall 31, and described magnetic bowl 13 clasp, in the bottom of frame 3, magnetic bowl 13, surrounds the inner chamber of electro-acoustic element between vibrating diaphragm 21 and frame 3.Form magnetic gap between side plate 132 and magnet steel 11, voice coil loudspeaker voice coil 22 inserts described magnetic gap internal cutting magnetic induction line and drives vibrating diaphragm 21 to vibrate.Described magnetic bowl 13 comprises the base plate 131 that a lid is connected on frame 3 bottom opening and the side plate 132 extended to vibrating diaphragm 21 direction from base plate 131 liang of major axis limits, and described side plate 132 is connected on the inwall of frame 3.Described magnetic bowl 13 can be made up of permeability magnetic material, also can make for non-magnet material, preferably, is permeability magnetic material.
As shown in Fig. 4 to Fig. 6, outside two minor axis edge short-axis direction biside plates 132 of base plate 131, extend to form fixed part 1312.Described fixed part 1312 protrudes from the plane at magnetic bowl side plate 132 place in magnetic bowl 13 side surface direction.Described fixed part 1312 is fixed on the bottom of frame sidewall 31.Described fixed part 1312 protrudes from the plane at base plate place in the horizontal direction.Corresponding, the bottom of described frame sidewall 31 is provided with for holding the draw-in groove 33 fixing this fixed part 1312.Realize the location of frame 3 and magnetic bowl 13 by the mating reaction of draw-in groove 33 and fixed part 1312 and fix.
Described base plate 131 is provided with and is positioned at minor axis limit central authorities from bottom edge to the first notch part 1311 caved in away from frame sidewall 31 direction.Corresponding, the sidewall 31 of frame 3 is provided with second notch part 32 that arrange corresponding to the first notch part 1311, base plate 131 is connected in frame 3, and the projection of described second breach 32 on base plate 131 direction drops on the first notch part 1311.Described first notch part 1311 forms the leak holes 100 being communicated with ambient air outside and electro-acoustic element inner chamber jointly with the second notch part 32.Make the gas in inner chamber can discharge by this leak holes 100 acoustical behavior improving product.Wherein ambient air outside is air in electro-acoustic element installation environment, determine according to its installation position, be generally the inner space of the mobile communication equipment of this electro-acoustic element of application, when another kind is possible, can also for installing the space outerpace at the mobile communication equipment place of this electro-acoustic element.
Wherein, first notch part 1311 runs through magnetic bowl base plate 131, electro-acoustic element inner chamber is communicated with the ambient air outside of the bottom of electro-acoustic element by the first notch part 1311, second notch part 32 runs through the sidewall 31 of frame, electro-acoustic element is communicated with the ambient air outside of the side of electro-acoustic element by the second notch part 32, like this, even if installing space is limited, when the bottom of electro-acoustic element is blocked, air still can be revealed from the second notch part of sidewall, as a same reason, when sidewall is blocked, also can be revealed by the first notch part 1311 of bottom.
Be provided with a damping fin 14 between the base plate 131 of magnetic bowl 13 and the bottom of frame sidewall 31, described damping fin 14 covers described leak holes 100 from electro-acoustic element inside.Damping fin 14 upper surface is connected with frame 3, and lower surface is connected with magnetic bowl 13.
A depressed part 10 is formed between described base plate 131 and magnet steel 11, the end of described damping fin is inserted and is clamped and fastened in described depressed part 10, in the present embodiment, the bottom surface of described magnet steel 11 is plane, described base plate 131 caves in the magnetic bowl bottom direction away from magnet steel from the upper surface contacted with magnet steel 10, jointly forms described depressed part 10 between the bottom surface of magnet steel and the depression of magnetic bowl.Certainly, this is only wherein a kind of enforceable mode, in other execution modes selectable, also can be plane for the upper surface of base plate 131, the lower surface of magnet steel 11 is recessed to form depressed part 10 to away from base plate 131 direction, also can be base plate 131 and magnet steel 11 be equipped with mutually away from depression, jointly form depressed part 10, all can implement.The upper and lower surface of described damping fin and depressed part is all sticked, and fixes by arranging glue-line, also can adopt the sticking damping fin of self tool.
Damping fin 14 comprises the Part II 142 of the Part I 141 being clamped and fastened on depressed part 10 and the described leak holes 100 of covering be connected with Part I 141.The end winding support of described Part II 142 is in described second notch part 32.Preferably, the frame sidewall lower surface forming described second notch part 32 is positioned in same level with the magnet steel lower surface forming depressed part 10, can ensure the smooth of damping fin 14 like this.Damping fin all contacts with the upper and lower surface in depressed part, preferably, is equipped with glue-line bonding, can improve the stability of product so further.
Damping fin 14 can play the leakage part of blocking between frame 3 and magnetic bowl 13, play dust-proof effect, in addition, when vibrating diaphragm 21 vibrates, compression can be played to the air in inner chamber, damping fin 14 can play certain cushioning effect to compressed air, improves the acoustic resistance of product, thus improves the acoustical behavior of product.
In present embodiment, described frame 3 is strip with base plate 131, certainly, also can be other shapes.Long axis direction in above-mentioned explanation, short-axis direction, major axis limit, minor axis limit, the restriction on the direction of only carrying out for convenience of description, must not represent its length, neither to the concrete restriction of its shape.
Electro-acoustic element of the present utility model arranges depressed part between magnetic bowl and magnet steel, and damping fin inserts this depressed part, can prevent damping fin from producing warpage, improve the reliability of product.The utility model electro-acoustic element can 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 (10)
1. an electro-acoustic element, it comprises the frame with sidewall of a up/down perforation, be contained in the magnetic circuit system in frame and vibrational system, described vibrational system comprises vibrating diaphragm, magnetic circuit system comprises magnet steel and and to be immobilizated in bottom frame and jointly to surround the magnetic bowl of inner chamber with frame and vibrating diaphragm, described magnetic bowl comprises one for placing the base plate of magnet steel, it is characterized in that: between described frame sidewall and magnetic bowl base plate, form a leak holes through with ambient air outside, be sticked in described magnetic bowl a damping fin, described damping fin covers described leak holes from electro-acoustic element inside, described base plate with form a depressed part communicated with inner chamber between magnet steel, one end of described damping fin is clamped in described depressed part.
2. electro-acoustic element according to claim 1, is characterized in that: described depressed part is arranged on magnetic bowl, is recessed to form to away from magnet steel direction from the surface that base plate contacts with magnet steel.
3. electro-acoustic element according to claim 1, is characterized in that: described depressed part is arranged on magnet steel, is recessed to form to away from base plate direction from the surface of magnet steel and contacts baseplate.
4. the electro-acoustic element according to Claims 2 or 3, it is characterized in that: described magnetic bowl is a string configuration, extend to form from two major axis limits of base plate the sidewall abutted with frame inwall to vibrating diaphragm direction, two minor axis limits are provided with the first notch part to caving in away from frame sidewall direction.
5. electro-acoustic element according to claim 4, is characterized in that: described base plate extend to form outside side plate with frame bottom fixing fixed part.
6. electro-acoustic element according to claim 5, is characterized in that: the bottom of described frame sidewall is provided with for holding the draw-in groove fixing this fixed part.
7. electro-acoustic element according to claim 4, it is characterized in that: described frame sidewall is provided with second notch part that arrange corresponding to the first notch part, described first notch part and the second notch part form described leak holes jointly, described electro-acoustic element inner chamber is communicated with bottom electro-acoustic element by the first notch part, is communicated with electro-acoustic element both sides by the second breach.
8. electro-acoustic element according to claim 7, is characterized in that: described damping fin comprises the Part I inserting described depressed part and the Part II covering leak holes.
9. electro-acoustic element according to claim 8, is characterized in that: the end winding support of described Part II is in described second notch part.
10. electro-acoustic element according to claim 9, is characterized in that: the magnet steel lower surface forming described depressed part is positioned at same level with the frame sidewall lower surface forming described second breach.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520477357.9U CN204810521U (en) | 2015-07-03 | 2015-07-03 | Electroacoustic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520477357.9U CN204810521U (en) | 2015-07-03 | 2015-07-03 | Electroacoustic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204810521U true CN204810521U (en) | 2015-11-25 |
Family
ID=54595264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520477357.9U Expired - Fee Related CN204810521U (en) | 2015-07-03 | 2015-07-03 | Electroacoustic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204810521U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110278517A (en) * | 2019-07-16 | 2019-09-24 | 瑞声光电科技(常州)有限公司 | Loudspeaker enclosure |
| WO2020133515A1 (en) * | 2018-12-29 | 2020-07-02 | 瑞声科技（南京）有限公司 | Speaker |
-
2015
- 2015-07-03 CN CN201520477357.9U patent/CN204810521U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020133515A1 (en) * | 2018-12-29 | 2020-07-02 | 瑞声科技（南京）有限公司 | Speaker |
| CN110278517A (en) * | 2019-07-16 | 2019-09-24 | 瑞声光电科技(常州)有限公司 | Loudspeaker enclosure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 Termination date: 20210703 |