CN201238376Y

CN201238376Y - Miniature sounding device

Info

Publication number: CN201238376Y
Application number: CNU2008200953093U
Authority: CN
Inventors: 黄兴志; 张�雄; 王超
Original assignee: AAC Acoustic Technologies Changzhou Co Ltd
Current assignee: AAC Technologies Holdings Changzhou Co Ltd
Priority date: 2008-07-04
Filing date: 2008-07-04
Publication date: 2009-05-13
Anticipated expiration: 2018-07-04

Abstract

The utility model provides a novel micro sounder, which comprises a frame provided with an annular accepting hole, a magnetic bowl contained in the frame, a vibrating voice coil arranged in the magnetic bowl, a vibrating diaphragm connected with the vibrating voice coil, and an upper cover covered on the frame, wherein, the magnetic bowl is provided with a bottom surface and a side wall extending from the bottom surface. When the parts are assembled, the outer wall of the magnetic bowl is exposed to the outside of the frame; the micro sounder also comprises a hearing aid voice coil connected with the side wall exposed to the outside of the frame. The hearing aid voice coil is connected with the side wall exposed to the outside of the frame, the manufacture is simple, the space around the novel micro sounder which is not utilized originally is utilized, and the volume of the micro sounder is effectively reduced.

Description

Mini-sound device

[technical field]

The utility model relates to a kind of microphone device, relates in particular to a kind of mini-sound device.

[background technology]

In the process of portable equipment fast developments such as mobile phone, people are more and more stronger to the functional requirement of product, for this function of Music Appreciation of mobile phone, in order to make entertainment effect stronger, the pattern that the music belt vibration occurred, thus, the also corresponding quickening of the development of miniature electro-acoustic device.

Please join shown in Figure 1, the mini-sound device 1 ' of dependency structure, it comprises body 11 ', be contained in magnetic bowl 12 ' in the body 11 ', be placed in permanent magnet 13 ' in the magnetic bowl 12 ', be arranged on the voice coil loudspeaker voice coil 14 ' between permanent magnet 13 ' and the magnetic bowl 12 ', the vibrating diaphragm 15 ' that is connected with voice coil loudspeaker voice coil 14 ', covers lid 16 ' that is connected on the body 11 ' and the listening help circle 17 ' that fits in lid 16 '.Described listening help circle 17 ' sticks on the side that lid 16 ' is gone up near vibrating diaphragm 15 ' by glue.

Listening help circle 17 ' is the service function that provides for the dysaudia personage, and the alternating electromagnetic field and the induction of the hearing aids in Hearing Impaired's ear that utilize listening help circle 17 ' to produce can help the Hearing Impaired to hear sound.

And the mini-sound device 1 ' of dependency structure, listening help circle 17 ' is fixed on the lid 16 ' by glue.This kind design has taken very big space, mini-sound device 1 ' inside, causes the volume of mini-sound device 1 ' very big.And the evenness of listening help circle 17 ' influenced by gluing technique very big, when gluing technique is unstable, easily cause listening help circle 17 ' to tilt, influence vibrating diaphragm 15 ' normal vibration and cause pure tone bad.

Therefore be necessary the mini-sound device of dependency structure is improved in fact.

[utility model content]

The purpose of this utility model is to provide the mini-sound device that a kind of volume is little, timbre is good.

The purpose of this utility model is achieved in that a kind of mini-sound device, it comprises the basin frame that is provided with annular accepting hole, be contained in magnetic bowl in the basin frame, be placed in permanent magnet in the magnetic bowl, be arranged on the voice coil loudspeaker voice coil between permanent magnet and magnetic bowl, the vibrating diaphragm that is connected with voice coil loudspeaker voice coil, lid are connected to the loam cake of basin frame, wherein, the sidewall that the magnetic bowl is provided with the bottom surface and extends from the bottom surface, during assembling, the sidewall sections of magnetic bowl is exposed to outside the basin frame, described mini-sound device also be provided with the magnetic bowl on be exposed to the listening help circle that the outer sidewall of basin frame links to each other.

Compared with prior art, mini-sound device of the present utility model links to each other being exposed to the outer sidewall of basin frame on listening help circle and the magnetic bowl, makes simply, reasonably utilize the space that does not originally use around the mini-sound device, can effectively reduce the volume of mini-sound device.Listening help circle has guaranteed the timbre that mini-sound device is good away from vibrating diaphragm.

[description of drawings]

Fig. 1 is the phantom of correlation technique mini-sound device.

Fig. 2 is the three-dimensional exploded view of the utility model mini-sound device.

Fig. 3 is the three-dimensional exploded view at another visual angle of the utility model mini-sound device.

Fig. 4 is the utility model mini-sound device stereogram.

Fig. 5 removes the stereogram at another visual angle of loam cake and dust cover for the utility model mini-sound device.

[embodiment]

Describe the concrete structure of the utility model mini-sound device 100 in detail below in conjunction with accompanying drawing.

Please join Fig. 1-Fig. 4, the utility model mini-sound device 100, its involving vibrations system (not indicating), magnetic circuit system 2 and auxiliary system (not indicating), wherein, vibrational system comprises vibrating diaphragm 11 and the vibrating voice coil 12 that links to each other with vibrating diaphragm 11; Magnetic circuit system 2 comprises magnetic bowl 21, be contained in the permanent magnet 22 in the magnetic bowl 21 and place pole piece 23 on the permanent magnet 22; Auxiliary system comprises basin frame 31, loam cake 32, conducting terminal 33, listening help circle 34 and dust cover 35.

Vibrating diaphragm 11 comprises that ball top 111, plane and center are the soft ring 112 on plane.

Vibrating voice coil 12 its insulating barriers (not indicating) of being located at the sheet metal periphery by continuous sheet metal (not indicating) and bag are formed.The section of this sheet metal is that helical form is twined, integral body is tubular.Described vibrating voice coil 12 comprises annulus 121 and the free lead wire 122 of drawing from annulus 121.Vibrating voice coil 12 links together with the mode of vibrating diaphragm 11 by gummed.

Basin frame 31 is the cuboid of hollow, and it is formed by annular accepting hole 311 with around the main part 312 of this annular accepting hole 311, main part 312 be provided with close vibrating diaphragm 11 upper surface 313 and with upper surface 313 opposing lower surface 314.The lower surface 314 of autonomous body 312 is to be extended with some supporting walls 315 away from main part 312.Described supporting walls 315 is slightly larger than the thickness of hearing aid sound 34 to the distance of annular accepting hole 311.This supporting walls 315 can be used for locating listening help circle 34 on the one hand, can prevent that on the other hand external force from causing damage to listening help circle 34.Be extended with the holding parts 316 of fixing loam cake 32 near a side direction main part 312 of upper surface 313 from annular accepting hole 311.There is location notch 310 at two ends in main part 312 from upper surface 313 depressions.The upper surface 313 of autonomous body 312 has first accepting groove 317 to lower surface 314 depressions; The lower surface 314 of autonomous body 312 has second accepting groove 318 and the 3rd accepting groove 319 to upper surface 313 depressions.Described first accepting groove 317 is used to accommodate first weld part 331 of sheet metal 33 and first lead-in wire 122 of vibrating voice coil 34; Second accepting groove 318 is used to accommodate second weld part 332 of sheet metal 33 and second lead-in wire 341 of listening help circle 34; The 3rd accepting groove 318 is used to accommodate the contact site 333 of sheet metal 33.

Magnetic bowl 21 is provided with bottom surface 211,211 sidewalls 212 that extend and the receiving spaces 213 that formed jointly by bottom surface 211 and sidewall 212 from the bottom surface, described permanent magnet 22 is contained in the receiving space 213 of magnetic bowl 21, during assembling, sidewall 212 parts of magnetic bowl 21 are exposed to outside the basin frame 31.

Loam cake 32 is stamped to form by sheet metal, and it is provided with second loam cake 322 that first loam cake 321 and lid are connected to first loam cake 321.Wherein first loam cake 321 and second loam cake 322 outwards are extended with some retaining sheets 323 respectively, and this retaining sheet 323 can be held on the holding parts 316 of basin frame 31.Described second loam cake 322 also is provided with the location division 324 in the outward extending location notch 310 that is contained in body 312 in its two ends.

Listening help circle 34 also is made up of the insulating barrier (sign) that continuous sheet metal (indicate) and bag are located at sheet metal 33 peripheries.It is provided with two second lead-in wires 341, the inner ring 342 that links to each other with the sidewall 212 of magnetic bowl 21 and the outer ring 343 relative with inner ring 342, described outer ring 343 can with supporting walls 315 (being described in detail as follows) butt of basin frame 31.

The mini-sound device 100 of this structure, vibrating voice coil 12 place in the magnetic circuit system 2 and when feeding the alternation tone currents, vibrating voice coil 12 is subjected to the motive force of an alternation, produces alternate motion, thereby drives vibrating diaphragm 11 vibrations, sounds.The alternating electromagnetic field that listening help circle 34 can produce, this alternating electromagnetic field can be responded to the hearing aids in Hearing Impaired's ear, helps the Hearing Impaired to hear sound.

During assembling, the magnetic bowl 21 that at first will contain permanent magnet 22 and pole piece 23 places in the annular accepting hole 311 of basin frame 31, and sidewall 212 parts of magnetic bowl 21 are exposed to outside the basin frame 31 at this moment; The vibrating diaphragm 11 that will be fitted with vibrating voice coil 12 then is connected to the upper surface 313 of the main part 312 of basin frame 31, and the retaining sheet 323 of loam cake 32 is held on the holding parts 316 of basin frame 31; Link to each other being exposed to basin frame 31 outer sidewalls 212 on the inner ring 342 of listening help circle 34 and the magnetic bowl 21 at last, and make the outer ring 343 of listening help circle 34 be connected to the supporting walls 315 of basin frame 31.

Mini-sound device 100 of the present utility model, link to each other being exposed to basin frame 31 outer sidewalls 212 on listening help circle 34 and the magnetic bowl 21, make simply, reasonably utilized the space that does not originally use around the mini-sound device 100, can effectively reduce the volume of mini-sound device 100.Listening help circle 34 is away from vibrating diaphragm 11, guaranteed the timbre that mini-sound device 100 is good.In addition, the structure of the utility model mini-sound device 100 can not influence the operate as normal of listening help circle 34.

The above only is a better embodiment of the present utility model; protection range of the present utility model does not exceed with above-mentioned execution mode; as long as the equivalence that those of ordinary skills do according to the utility model institute disclosure is modified or changed, all should include in the protection range of putting down in writing in claims.

Claims

1, a kind of mini-sound device, it comprises the basin frame that is provided with annular accepting hole, be contained in magnetic bowl in the basin frame, be placed in permanent magnet in the magnetic bowl, be arranged on the voice coil loudspeaker voice coil between permanent magnet and magnetic bowl, the vibrating diaphragm that is connected with voice coil loudspeaker voice coil, lid are connected to the loam cake of basin frame, wherein, the sidewall that the magnetic bowl is provided with the bottom surface and extends from the bottom surface, during assembling, the sidewall sections of magnetic bowl is exposed to outside the basin frame, it is characterized in that: described mini-sound device also be provided with the magnetic bowl on be exposed to the listening help circle that the outer sidewall of basin frame links to each other.

2, mini-sound device as claimed in claim 1, it is characterized in that: described basin sets up the main part around annular accepting hole, this main part be provided with near the upper surface of vibrating diaphragm, with the upper surface opposing lower surface, to be extended with some supporting walls away from main part, described supporting walls is slightly larger than the thickness of listening help circle to the distance of annular accepting hole from this lower surface.

3, mini-sound device as claimed in claim 2 is characterized in that: described basin has set up holding parts, on be covered with retaining sheet on the holding parts that can be held in the basin frame.