CN205491130U - Micro sound production device - Google Patents
Micro sound production device Download PDFInfo
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- CN205491130U CN205491130U CN201620088730.6U CN201620088730U CN205491130U CN 205491130 U CN205491130 U CN 205491130U CN 201620088730 U CN201620088730 U CN 201620088730U CN 205491130 U CN205491130 U CN 205491130U
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- voice coil
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- sound
- coil loudspeaker
- loudspeaker voice
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Abstract
The utility model provides a micro sound production device, it includes vibration system and fixing system, vibration system includes the sound membrane and is located the drive of sound membrane below the voice coil loudspeaker voice coil of sound membrane vibration sound production, vibration system further includes elastic support the support piece of voice coil loudspeaker voice coil, support piece includes flexible circuit board and the vibrating diaphragm of being made by thin film materials. The utility model provides an it is fixed that micro sound production device makes the voice coil loudspeaker voice coil obtain, has improved compact structure nature, has solved the problem that inner member swayd.
Description
[technical field]
This utility model relates to a kind of mini-sound device, particularly relates to the support knot of mini-sound device
Structure.
[background technology]
For adapting to various stereo sets and the miniaturization of information communication device, multifunction development, it is desirable to
Mini-sound device correspondence used in this kind equipment more tends to miniaturization, makes described miniature sounding
Device is compacter with coordinating of other elements of periphery.Need especially as the lightening development of mobile phone
Ask, more and more higher to the prescription of the mini-sound device used in it.
Sound film in the mini-sound device structure of prior art is single-tone film, and in mini-sound device
Voice coil loudspeaker voice coil do not fix, voice coil loudspeaker voice coil produces inside mini-sound device and waves, and vibration imbalance easily occurs
Phenomenon, thus cause mini-sound device pure tone bad.
Therefore, it is necessary to provide a kind of new mini-sound device to solve above-mentioned technical problem.
[utility model content]
The purpose of this utility model is that one makes voice coil loudspeaker voice coil fix, inner member is difficult to wave in offer, from
And the mini-sound device of pure tone effect can be improved.
The technical solution of the utility model is as follows:
A kind of mini-sound device, it includes that vibrational system and fixed system, described vibrational system include
Sound film and be positioned at below described sound film the voice coil loudspeaker voice coil driving described sound film vibration sounding, described vibrational system is entered
One step includes the support member flexibly supporting described voice coil loudspeaker voice coil, and described support member includes flexible PCB and by thin
The vibrating diaphragm that membrane material is made.
Preferably, described voice coil loudspeaker voice coil includes a pair major axis limit and short a pair axle limit, and described support member is arranged at
The short axle limit of described voice coil loudspeaker voice coil.
Preferably, described voice coil loudspeaker voice coil is electrically connected with described flexible PCB.
Preferably, described flexible PCB include first fixed part fixing with described fixed system and
The second fixed part that described voice coil loudspeaker voice coil connects and connect the bullet of described first fixed part and described second fixed part
Property connecting portion.
Preferably, described voice coil loudspeaker voice coil includes that voice coil leads, described flexible PCB include from described second admittedly
Determine portion stretch out formed the second pad, described voice coil leads is connected with described second pad.
Preferably, described fixed system includes the frame with receiving space and drives described vibrational system
The magnetic circuit system of vibration, described magnetic circuit system includes magnetic bowl and is arranged at the magnet steel in described magnetic bowl, institute
State magnet steel include main magnet steel and be arranged at the secondary magnet steel on described voice coil loudspeaker voice coil major axis limit.
Preferably, one end of described support member is fixed with described frame.
Preferably, one end of described support member is fixed with described magnetic circuit system.
Preferably, described frame includes two major axis sidewalls and two the short axle sidewalls connected therewith, institute
State magnetic bowl and include base plate and the side plate extended from two lateral bucklings of described base plate, the short axle side of described frame
Wall is provided with the second resettlement section housing described magnetic bowl side plate.
Preferably, described frame includes the fixed arm fitted with described flexible PCB, described fixed arm
It is positioned at described magnetic bowl.
Preferably, the two ends of described major axis sidewall are provided with baffle plate, described baffle plate and described major axis sidewall shape
Become the first resettlement section housing described secondary magnet steel.
Preferably, described vibrating diaphragm be arranged at described flexible PCB lower section and with described flexible PCB
Connect.
Preferably, described fixed system includes magnetic bowl and is arranged at the magnet steel in described magnetic bowl, described in shake
Film includes threeth fixed part, fourth fixed part fixing with described flexible PCB and is connected the described 3rd
Fixed part and the depressed part of the 4th fixed part, described magnetic bowl includes the step down portion corresponding with described depressed part.
Preferably, described voice coil loudspeaker voice coil includes the upper surface near described sound film, the following table away from described sound film
Face and connect the side of described upper surface and described lower surface, one end of described support member and described following table
Face connects.
Preferably, described voice coil loudspeaker voice coil includes the upper surface near described sound film, the following table away from described sound film
Face and connect the side of described upper surface and described lower surface, one end of described support member and described side
Connect.
Preferably, described flexible PCB include from described first fixed part stretch out formed first
Pad, described first pad is connected with external circuit.
The beneficial effects of the utility model are: set by the voice coil loudspeaker voice coil short-axis direction at mini-sound device
Putting support member, described support member is fixing connects described voice coil loudspeaker voice coil and fixed system, can limit described voice coil loudspeaker voice coil
Waving of long axis direction, improves the pure tone effect of described mini-sound device.Meanwhile, because of long axis direction
Without support member, therefore the space of long axis direction increases, by the secondary magnet steel arranged at long axis direction, a side
Face makes described mini-sound device internal structure more compact, makes described voice coil loudspeaker voice coil be fixed, can limit institute
State voice coil loudspeaker voice coil waving at long axis direction, improve the pure tone effect of described mini-sound device further；Separately
On the one hand the space in described mini-sound device is made to be fully used, described secondary magnet steel and described master
Magnet steel acts on jointly, improves the work efficiency of described mini-sound device.
[accompanying drawing explanation]
Fig. 1 is the perspective exploded view of this utility model mini-sound device embodiment one；
Fig. 2 is the structural representation of the frame of mini-sound device embodiment one shown in Fig. 1；
Fig. 3 is the part-structure schematic diagram after mini-sound device embodiment one shown in Fig. 1 assembles；
Fig. 4 is the perspective exploded view of this utility model mini-sound device embodiment two；
Fig. 5 is the structural representation of the frame of mini-sound device embodiment two shown in Fig. 4；
Fig. 6 is the part-structure schematic diagram after mini-sound device embodiment two shown in Fig. 4 assembles；
Fig. 7 is the perspective exploded view of this utility model mini-sound device embodiment three；
Fig. 8 is the structural representation of the frame of mini-sound device embodiment three shown in Fig. 7；
Fig. 9 is the part-structure schematic diagram after mini-sound device embodiment three shown in Fig. 7 assembles；
Figure 10 is the structural representation after mini-sound device embodiment three shown in Fig. 7 assembles；
Figure 11 is the sectional structure schematic diagram along line A-A of the mini-sound device embodiment three shown in Figure 10；
Figure 12 is the sectional structure schematic diagram along line B-B of the mini-sound device embodiment three shown in Figure 10.
[detailed description of the invention]
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
Embodiment one
Seeing also Fig. 1 to Fig. 3, described mini-sound device 1 includes fixed system 11 and vibration
System 12.Described fixed system 11 includes the frame 111 with receiving space and is contained in described basin
Driving the described magnetic circuit system 112 of described vibrational system 12 in frame 111, described magnetic circuit system 112 wraps
Including magnetic bowl 1121 and be arranged at the magnet steel 1122 in described magnetic bowl 1121, described magnet steel 1122 includes main
Magnet steel 11221 and be arranged at the secondary magnet steel 11222 of described main magnet steel 11221 both sides, described main magnet steel
The magnetic gap formed between 11221 and described secondary magnet steel 11222.Described magnetic bowl 1121 includes a base plate
11211 and from described base plate 11211 extend two side plates 11212.
Described frame 111 is the overall rectangle in hollow, and described frame 111 includes two major axis sidewalls
1111, two short axle sidewalls 1112 and be arranged at the fixed arm 1113 on described short axle sidewall 1112.
Described two major axis sidewalls 1111 connect with two short axle sidewalls 1112, when described magnetic bowl 1121 and institute
After stating frame 111 assembling, described fixed arm 1113 is positioned at described magnetic bowl 1121.Described major axis side
The two ends of wall 1111 are provided with baffle plate 11111, and described baffle plate 11111 is formed with described major axis sidewall 1111
Housing the first resettlement section 11112 of described secondary magnet steel 11222, two described secondary magnet steel 11222 parts are received
It is dissolved in described first resettlement section 11112.The described short axle sidewall 1112 of described frame 111 is provided with receipts
Hold the second resettlement section 11121 of described magnetic bowl 1121 side plate 11212.
Described magnetic circuit system 112 also includes that pole piece 1123, train wheel bridge 1124, described pole piece 1123 are folded
Being located on described main magnet steel 11221, described train wheel bridge 1124 is immobilizated in described frame 111 and is stacked at
On described secondary magnet steel 11222.Described train wheel bridge 1124 is the tabular of tool through hole, described pole piece 1123
It is positioned at the through hole of described train wheel bridge 1124, and is in same plane with described train wheel bridge 1124.
Described vibrational system 12 includes sound film 121, voice coil loudspeaker voice coil 122, support member 123 and is positioned at described sound
Reinforcing plate 124 above film 121.Described voice coil loudspeaker voice coil 122 is positioned at lower section and the driving of described sound film 121
Described sound film 121 vibration sounding, one end of described support member 123 is fixing with described fixed system 11,
The other end is connected fixing with described voice coil loudspeaker voice coil 122.
Described sound film 121 includes top dome 1211 and from the described outward extending ring of top dome 1,211 1212.
Described sound film 121 is connected with described voice coil loudspeaker voice coil 122 and described frame 111 respectively, concrete, described sound
Film 121 top dome 1211 is connected with described voice coil loudspeaker voice coil 122, and the ring 1212 of described sound film 121 is with described
Frame 111 connects.
Described voice coil loudspeaker voice coil 122 inserts in described magnetic gap, its generally rectangle structure.Described voice coil loudspeaker voice coil 122
Including a pair major axis limit 1221 and short a pair axle limit 1222, described voice coil loudspeaker voice coil 122 is located in described sound film
Between 121 and described support member 123, described voice coil loudspeaker voice coil 122 includes outward extending voice coil leads 1223.
Described voice coil loudspeaker voice coil 122 include near described sound film 121 upper surface, away from described sound film lower surface and
Connect the side of described upper surface and described lower surface, one end of described support member 123 and described following table
Face or side connect.
Described support member 123 is arranged at the short axle limit 1222 of described voice coil loudspeaker voice coil 122 and flexibly supports described sound
Circle 122.In the present embodiment one, described support member 123 is flexible PCB, described flexible circuit
Plate is positioned at the lower section of described voice coil loudspeaker voice coil 122.One end of described flexible PCB is fixing connects described fixing system
System 11, the other end is fixing connects described voice coil loudspeaker voice coil 122.On the one hand, described flexible PCB plays support admittedly
The effect of fixed described voice coil loudspeaker voice coil 122, the most described flexible PCB and the voice coil loudspeaker voice coil of described voice coil loudspeaker voice coil 122
Lead-in wire has connected the effect being electrically connected with described voice coil loudspeaker voice coil 122.
Described support member 123 includes first circuit board 1231 and second circuit board 1232.Described first
Circuit board 1231 includes and described fixed system 11 the first fixing fixed part 12311 and described sound
Enclose 122 the second fixing fixed parts 12312 and connect described first fixed part 1231 with described second admittedly
Determining the elastic joint part 12313 in portion 1232, described support member 123 also includes from described first fixed part
12311 stretch out formed the first pad 12315, stretch out from described second fixed part 12312
The second pad 12314 formed, described first pad 12315 is connected with external circuit, described voice coil loudspeaker voice coil
Lead-in wire 1223 with described second pad 12314 by weld or other modes realize electric connection, described
Elastic joint part 12313 is provided with conductive path to be electrically connected with described first pad 12315 and second
Pad 12314, the described signal of telecommunication is reached through elastic joint part 12313 by the second pad 12314
First pad 12315, then transmit to external circuit.
Concrete, in the present embodiment, described first fixed part 12311 of described first circuit board 1231
Bonding with the described fixed arm 1113 of described frame 11 or be welded and fixed, in other embodiments, institute
State the first fixed part 12311 also can with described magnetic bowl 1121 or magnet steel 1122 is fixing is connected.Institute
Described second fixed part 12312 stating support member 123 supports the described short axle limit with described voice coil loudspeaker voice coil 122
1222.The structure of described second circuit board 1232 and described first circuit board 1231 and connected mode phase
With, and described first circuit board 1231 and described second circuit board 1232 be symmetrical arranged.Due to described
Support member 123 for be made up of conductive materials such as FPC, described voice coil leads 1223 and described support member
Described second pad 12314 of 123 welds, and outer signals can pass through described support member 123
It is transferred to described voice coil loudspeaker voice coil 122, decreases operation and welding envelope line, improve the stability of product, simultaneously
Support member 123 supports described voice coil loudspeaker voice coil 122, can limit waving of described voice coil loudspeaker voice coil long axis direction, improves
The pure tone effect of described mini-sound device.
Embodiment two
Seeing also Fig. 4 to Fig. 6, the mini-sound device 2 in embodiment two includes fixed system
21 and vibrational system 22.Described fixed system 21 includes the frame 211 with receiving space and houses
The described magnetic circuit system 212 of described vibrational system 22 vibration, described magnetic is driven in described frame 211
Road system 212 includes magnetic bowl 2121 and is arranged at the magnet steel 2122 in described magnetic bowl 2121, described magnetic
Steel 2122 includes main magnet steel 21221 and is arranged at the secondary magnet steel 21222 of described main magnet steel 21221 both sides,
The magnetic gap formed between described main magnet steel 21221 and described secondary magnet steel 21222.Described magnetic bowl 1121
Including a base plate 21211 and two side plates 21212 from the extension of described base plate 21211.
Described frame 211 entirety is the rectangle of hollow, and described frame 211 includes two major axis sidewalls
2111, two short axle sidewalls 2112 and fixed arm 2113.Described two major axis sidewalls 2111 and two
Bar short axle sidewall 2112 connects, after described magnetic bowl 2121 assembles with described frame 211, described solid
Arms 2113 is positioned at described magnetic bowl 2121.The two ends of described major axis sidewall 2111 are provided with baffle plate
21111, described baffle plate 21111 and described major axis sidewall 2111 are formed and house described secondary magnet steel 21222
The first resettlement section 21112, two described secondary magnet steel 21222 are partially housed in described first resettlement section
21112.The described short sidewall 1112 of described frame 211 is provided with described magnetic bowl 2121 side plate of collecting
Second resettlement section 21121 of 21212.
Described magnetic circuit system 212 also includes pole piece 2123, train wheel bridge 2124.Described magnetic circuit system 212
In the structure of each parts identical with embodiment one with connected mode.
Described vibrational system 22 includes sound film 221, voice coil loudspeaker voice coil 222, support member 223 and is positioned at described sound
Reinforcing plate 224 above film 221.Described voice coil loudspeaker voice coil 222 is positioned at lower section and the driving of described sound film 221
Described sound film 221 vibration sounding, one end of described support member 223 is fixing with described fixed system 21,
The other end is connected fixing with described voice coil loudspeaker voice coil 222.
Described sound film 221 includes top dome 2211 and from the described outward extending ring of top dome 2,211 2212.
Described sound film 221 is connected with described voice coil loudspeaker voice coil 222 and described frame 211 respectively, concrete, described sound
Film 221 top dome 2211 is connected with described voice coil loudspeaker voice coil 222, and the ring 2212 of described sound film 221 is with described
Frame 211 is fixing to be connected.
Described voice coil loudspeaker voice coil 222 inserts in described magnetic gap, its generally rectangle structure.Described voice coil loudspeaker voice coil 222
Including a pair major axis limit 2221 and short a pair axle limit 2222, described voice coil loudspeaker voice coil 222 is located in described sound film
Between 221 and described support member 223.Described voice coil loudspeaker voice coil 222 includes the upper table near described sound film 221
Face, away from the lower surface of described sound film and connect the side of described upper surface and described lower surface, described
One end of support member 223 is connected with described lower surface or side.
Embodiment two differs only in embodiment one, and the support member 123 in described embodiment one is
Flexible PCB, the described support member 223 in embodiment two is the vibrating diaphragm being made up of thin-film material, rises
Support the effect of fixing described voice coil loudspeaker voice coil 222.
In the present embodiment, described support member 223 is positioned at the lower section of described voice coil loudspeaker voice coil 222, described support
One end of part 223 is fixing connects described fixed system 21, and the other end is fixing connects described voice coil loudspeaker voice coil 222.
Described support member 223 includes the first vibrating diaphragm 2231 and the second vibrating diaphragm 2232.Described vibrating diaphragm includes
The 4th be connected with described voice coil loudspeaker voice coil 222 with the 3rd fixing fixed part 22311 of described fixed system 21
Fixed part 22312 and connect described 3rd fixed part 22311 and the depressed part of the 4th fixed part 22312
22313, described magnetic bowl 2121 includes the step down portion 21213 corresponding with described depressed part 2233.At it
In his embodiment, described vibrating diaphragm can include connecting described 3rd fixed part and the protuberance of the 4th fixed part,
Now, magnetic bowl just can be not provided with described in step down portion.
Concrete, described 3rd fixed part 22311 of described first vibrating diaphragm 2231 and described frame 2111
Described fixed arm 2113 be adhesively fixed, in other embodiments, described 3rd fixed part 12311 is also
Can with described magnetic bowl 1121 or magnet steel 1122 is fixing is connected.The 4th of described first vibrating diaphragm 223
Fixed part 22312 is adhesively fixed with the short axle limit 2222 of described voice coil loudspeaker voice coil 222.Described second vibrating diaphragm 2232
Identical with connected mode with the structure of described first vibrating diaphragm 2231, and described first vibrating diaphragm 2231 and institute
State the second vibrating diaphragm 2232 to be symmetrical arranged.
Embodiment three
Seeing also Fig. 7 to Figure 12, the described mini-sound device 3 in embodiment three includes fixing
System 31 and vibrational system 32.Described fixed system 31 includes frame 311 He with receiving space
The described magnetic circuit system 312 of described vibrational system 32 vibration, institute is driven in being contained in described frame 311
State magnetic circuit system 312 include magnetic bowl 3121 and be arranged at the magnet steel 3122 in described magnetic bowl 3121, institute
State magnet steel 3122 include main magnet steel 31221 and be arranged at the secondary magnet steel of described main magnet steel 31221 both sides
31222, the magnetic gap formed between described main magnet steel 31221 and described secondary magnet steel 31222.Described magnetic
Bowl 3121 includes a base plate 31211 and two side plates 31212 extended from described base plate 31211.
Described frame 311 entirety is the rectangle of hollow, and described frame 311 includes two major axis sidewalls
3111, two short axle sidewalls 3112 and be arranged at the fixed arm 3113 on described short axle sidewall 3112.
Described two major axis sidewalls 3111 connect with two short axle sidewalls 3112, when described magnetic bowl 3121 and institute
After stating frame 311 assembling, described fixed arm 3113 is positioned at described magnetic bowl 3121.Described major axis side
The two ends of wall 3111 are provided with baffle plate 31111, and described baffle plate 31111 is formed with described major axis sidewall 3111
House the first resettlement section 31112 of described secondary magnet steel 31222.On the described short sidewall of frame 311 3112
It is provided with the second resettlement section 31121 housing described magnetic 3121 side plate 31212.
Described magnetic circuit system 312 also includes pole piece 3123, train wheel bridge 3124.Described magnetic circuit system 312
In the structure of each parts identical with embodiment one with connected mode.
Described vibrational system 32 includes sound film 321, voice coil loudspeaker voice coil 322, support member 323 and is positioned at described sound
Reinforcing plate 324 above film 321.Described voice coil loudspeaker voice coil 322 is positioned at lower section and the driving of described sound film 321
Described sound film 321 vibration sounding, one end of described support member 323 is fixing with described fixed system 31,
The other end is connected fixing with described voice coil loudspeaker voice coil 322.
Described sound film 321 includes top dome 3211 and from the described outward extending ring of top dome 1,211 3212.
Described sound film 321 is connected with described voice coil loudspeaker voice coil 322 and described frame 311 respectively, concrete, described sound
Film 321 top dome 3211 is connected with described voice coil loudspeaker voice coil 322, described sound film 321 ring 3212 and described basin
Frame 311 is fixing to be connected.
Described voice coil loudspeaker voice coil 322 inserts in described magnetic gap, its generally rectangle structure.Described voice coil loudspeaker voice coil 322
Including a pair major axis limit 3221 and short a pair axle limit 3222, described voice coil loudspeaker voice coil 322 is located in described sound film
Between 321 and described support member 323, described voice coil loudspeaker voice coil 322 includes outward extending voice coil leads 3223.
Described voice coil loudspeaker voice coil 322 include near described sound film 321 upper surface, away from described sound film lower surface and
Connect the side of described upper surface and described lower surface, one end of described support member 323 and described following table
Face or side connect.
Embodiment three and embodiment one, the differing only in of embodiment two, in described embodiment one
Support member 123 is flexible PCB, and the described support member 223 in embodiment two is for be made up of thin-film material
Vibrating diaphragm, the support member 323 in embodiment three includes flexible PCB 32311 and by ring material system
The vibrating diaphragm 3232 become.
Described support member 323 includes flexible PCB 3231 and is bonded and fixed to described flexible PCB
Vibrating diaphragm 3232 below 3231.In the present embodiment, described support member 323 is positioned at described voice coil loudspeaker voice coil 322
Lower section, described fixed system 31 is fixed in one end of described flexible PCB 3231, say, that
The described fixed arm 3113 of described frame 311 both can be fixed in one end of described flexible PCB 3231
On, it is also possible to it is fixed on magnetic bowl 3121 described in described magnetic circuit system 312 or magnet steel 3122,
The other end of described flexible PCB 3231 connects the described short axle limit 3222 of described voice coil loudspeaker voice coil 32.
Described flexible PCB 3231 includes the first flexible PCB 32311 and the second flexible PCB
32312.Described first flexible PCB 32311 includes solid with described fixed system 31 fixing first
Determine portion 323111 and the second fixing fixed part 323112 of described voice coil loudspeaker voice coil 322 and be connected described first
Fixed part 323111 and the elastic joint part 323113 of described second fixed part 323112.Described first
Flexible PCB 32311 also includes the first weldering formed that stretches out from described first fixed part 32311
Dish 32315, the second pad 32314 of the formation that stretches out from described second fixed part 323112, institute
State the first pad 32315 to be connected with external circuit, described voice coil leads 3223 and described second pad
32314 realize being electrically connected with by welding or other modes, and described elastic joint part 32313 is provided with
Conductive path is to be electrically connected with described first pad 32315 and the second pad 32314, the described signal of telecommunication
Reach the first pad 32315 by the second pad 32314 through elastic joint part 32313, then transmit
To external circuit.Described flexible PCB 3231 be a pair and structure identical, the two of described voice coil loudspeaker voice coil 322
Individual short axle limit 3222 respectively arranges a described flexible PCB 3231.Described flexible PCB 3231 with
Described short axle limit 3222 can be by being adhesively fixed.
Concrete, described second fixed part 323113 of described first flexible PCB 32311 is with described
The short axle limit 3222 of voice coil loudspeaker voice coil is adhesively fixed, the first fixed part of described first flexible PCB 32311
323111 is bonding with the described fixed arm 3113 of described frame 311 or be welded and fixed, and described first fixes
Portion 323111 also can fix be connected with described magnetic bowl 3121 or magnet steel 3122.Described second flexible circuit
Plate 32312 is identical with the mounting means of described first flexible PCB 32311, and described first is flexible
Circuit board 32311 and described second flexible PCB 32312 are symmetrical arranged.Due to described flexible circuit
Plate 3231 for be made up of conductive materials such as FPC, described voice coil leads 3223 and described flexible PCB
Described second pad 32314 of 3231 welds, and outer signals can pass through described flexible PCB
3231 are transferred to described voice coil loudspeaker voice coil 322, decrease operation and welding envelope line, improve the stability of product,
Flexible PCB 3231 supports described voice coil loudspeaker voice coil 122 simultaneously, can limit shaking of described voice coil loudspeaker voice coil long axis direction
Pendulum, improves the pure tone effect of described mini-sound device.
Described vibrating diaphragm 3232 is fabricated by by thin-film material, such as ring material, described vibrating diaphragm 3232
Being fixedly connected on the lower section of described flexible PCB 33, described vibrating diaphragm 3232 includes be oppositely arranged
One vibrating diaphragm 32321 and the second vibrating diaphragm 32322, described first vibrating diaphragm 32321 and described second vibrating diaphragm
32321 are attached at described first flexible PCB 32311 and described second flexible PCB respectively
32312, and described first vibrating diaphragm 32321 and described second vibrating diaphragm 32322 be symmetrical arranged.Described vibrating diaphragm
Including the 3rd fixed part the 32323, the 4th fixed part 32324 fixed with described flexible PCB 3231
And connect described 3rd fixed part 32323 and the depressed part 32325 of the 4th fixed part 32324, described
Magnetic bowl 3121 includes the step down portion 31213 corresponding with described depressed part 3233.In other embodiments,
Described vibrating diaphragm 3232 may also set up in the top of described flexible PCB 3231, and the most described vibrating diaphragm can
Including connecting described 3rd fixed part and the protuberance of the 4th fixed part, and then magnetic bowl just can be not provided with institute
State the portion of stepping down.
This utility model provides a kind of novel mini-sound device, by mini-sound device
Voice coil loudspeaker voice coil short-axis direction arranges support member, and described support member is fixing connects described voice coil loudspeaker voice coil and fixed system, can
To limit waving of described voice coil loudspeaker voice coil long axis direction, improve the pure tone effect of described mini-sound device.With
Time, because long axis direction is without support member, therefore the space of long axis direction increases, by arranging at long axis direction
Secondary magnet steel, on the one hand make described mini-sound device internal structure more compact, make described voice coil loudspeaker voice coil obtain
Fixing, described voice coil loudspeaker voice coil waving at long axis direction can be limited, improve described mini-sound device further
Pure tone effect；On the other hand the space in described mini-sound device is made to be fully used, described
Secondary magnet steel acts on jointly with described main magnet steel, improves the work efficiency of described mini-sound device.
Above-described is only embodiment of the present utility model, it should be noted here that for this area
Those of ordinary skill for, without departing from this utility model create design on the premise of, it is also possible to do
Go out to improve, but these belong to protection domain of the present utility model.
Claims (16)
1. a mini-sound device, it includes vibrational system and fixed system, described vibrational system bag
Include sound film and be positioned at below described sound film the voice coil loudspeaker voice coil driving described sound film vibration sounding, it is characterised in that
Described vibrational system farther includes to flexibly support the support member of described voice coil loudspeaker voice coil, and described support member includes soft
Property circuit board and the vibrating diaphragm being made up of thin-film material.
Mini-sound device the most according to claim 1, it is characterised in that: described voice coil loudspeaker voice coil includes
A pair major axis limit and short a pair axle limit, described support member is arranged at the short axle limit of described voice coil loudspeaker voice coil.
Mini-sound device the most according to claim 2, it is characterised in that: described voice coil loudspeaker voice coil and institute
State flexible PCB to be electrically connected with.
Mini-sound device the most according to claim 3, it is characterised in that: described flexible circuit
Plate includes the second fixed part that first fixed part fixing with described fixed system is connected with described voice coil loudspeaker voice coil
And connect the elastic joint part of described first fixed part and described second fixed part.
Mini-sound device the most according to claim 4, it is characterised in that: described voice coil loudspeaker voice coil includes
Voice coil leads, described flexible PCB includes the second weldering formed that stretches out from described second fixed part
Dish, described voice coil leads is connected with described second pad.
Mini-sound device the most according to claim 1, it is characterised in that: described fixed system
Including the frame with receiving space and the magnetic circuit system driving described vibrational system to vibrate, described magnetic circuit
System includes magnetic bowl and is arranged at the magnet steel in described magnetic bowl, and described magnet steel includes main magnet steel and is arranged at
The secondary magnet steel on described voice coil loudspeaker voice coil major axis limit.
Mini-sound device the most according to claim 6, it is characterised in that: described flexible circuit
One end of plate is fixed with described frame.
Mini-sound device the most according to claim 6, it is characterised in that: described flexible circuit
One end of plate is fixed with described magnetic circuit system.
Mini-sound device the most according to claim 7, it is characterised in that: described frame includes
Article two, major axis sidewall and two short axle sidewalls connecting therewith, described magnetic bowl includes base plate and from the described end
The side plate that two lateral bucklings of plate extend, the short axle sidewall of described frame is provided with the described magnetic bowl side plate of collecting
The second resettlement section.
Mini-sound device the most according to claim 9, it is characterised in that: described frame bag
Including the fixed arm fitted with described flexible PCB, described fixed arm is positioned at described magnetic bowl.
11. mini-sound devices according to claim 9, it is characterised in that: described major axis side
The two ends of wall are provided with baffle plate, and described baffle plate and described major axis sidewall are formed and house the first of described secondary magnet steel
Resettlement section.
12. mini-sound devices according to claim 1, it is characterised in that: described vibrating diaphragm sets
It is placed in the lower section of described flexible PCB and is connected with described flexible PCB.
13. mini-sound devices according to claim 12, it is characterised in that: described fixing system
System includes magnetic bowl and is arranged at the magnet steel in described magnetic bowl, and described vibrating diaphragm includes and described flexible PCB
Fixing the 3rd fixed part, the 4th fixed part and connect the recessed of described 3rd fixed part and the 4th fixed part
The portion of falling into, described magnetic bowl includes the step down portion corresponding with described depressed part.
14. mini-sound devices according to claim 1, it is characterised in that: described voice coil loudspeaker voice coil bag
Include the upper surface near described sound film, the lower surface away from described sound film and connect described upper surface and institute
Stating the side of lower surface, one end of described support member is connected with described lower surface.
15. mini-sound devices according to claim 1, it is characterised in that: described voice coil loudspeaker voice coil bag
Include the upper surface near described sound film, the lower surface away from described sound film and connect described upper surface and institute
Stating the side of lower surface, one end of described support member is connected with described side.
16. mini-sound devices according to claim 5, it is characterised in that: described flexible electrical
Road plate includes stretching out the first pad formed from described first fixed part, and described first pad is with outer
Portion's circuit connects.
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