CN209390318U - Microphone device - Google Patents

Abstract

The utility model discloses a kind of microphone devices comprising frame, conductive terminal, the vibrational system and flexible circuit board for being contained in frame；Frame is provided with the metal weld tabs for exposing to frame；Flexible circuit board includes frame body and at least two conducting arms, conductive terminal includes the middle part of weld part, holding section and connecting welding portion and holding section, weld part and metal weld tabs are welded to connect, holding section clamping is fixed on frame, conducting arm is located between middle part and frame, middle part is provided with the protrusion towards conducting arm protrusion, and protrusion compresses contact conducting arm.The conducting of the flexible circuit board and conductive terminal of the microphone device is realized and the protrusion being arranged in conductive terminal compresses contact flexible circuit board, it avoids welding procedure bring stress collection and neutralizes the unreliability factors such as the torque that generates to flexible circuit board of vibrational system is larger, can effectively promote the fatigue life of microphone device.

Description

Microphone device

[technical field]

The utility model relates to a kind of microphone device more particularly to a kind of hairs for applying to portable consumer electronic product Acoustic device.

[background technique]

With the development of electronic technology, portable consumer electronic product is increasingly pursued by people, such as mobile phone, notes This or palm multimedia entertainment equipment etc., these electronic products are vdiverse in function, also higher for the audio requirement of high-quality, because This, it is desirable to the performance applied to microphone device therein is stablized, long service life.

The microphone device of the relevant technologies comprising frame, conductive terminal, the vibrational system and flexibility for being contained in the frame Wiring board, the frame are provided with the metal weld tabs being embedded on the frame surface, and the vibrational system is described including being fixed on The vibrating diaphragm of frame, the voice coil of the driving diaphragm oscillations sounding and the flexible circuit board being oppositely arranged with the vibrating diaphragm.Sounding It is welded by flexible circuit board and the metal weld tabs welding being embedded in frame and conductive terminal and metal weld tabs the inside of device The conducting to realize flexible circuit board and conductive terminal is connect, external electric signal accesses microphone device by conductive terminal again, to drive Dynamic vibrational system vibration sounding.The weld of flexible circuit board and metal weld tabs is on the one hand since the limitation of welding procedure is easy to produce Raw stress is concentrated, flexible when vibrational system vibration sounding works on the other hand since flexible circuit board supports vibrational system simultaneously Wiring board vibrates therewith is easy to produce biggish torque, causes flexible circuit board and the soldering reliability of metal weld tabs poor.

Therefore, it is necessary to provide a kind of higher microphone device of reliability to solve above-mentioned deficiency.

[utility model content]

The purpose of the utility model is to provide a kind of higher microphone device of reliability, which is achieved in that one Kind microphone device includes frame, conductive terminal, the vibrational system and flexible circuit board for being contained in the frame；The frame setting There is the metal weld tabs for exposing to the frame；The flexible circuit board includes frame body and at least two conducting arms, the bone Frame ontology include the holding section for being fixed on the frame, connect with the vibrational system support portion and the connection holding section and The interconnecting piece of support portion, the conducting arm extend from the holding section both ends along the bending close to metal weld tabs direction；It is described Conductive terminal includes the middle part of weld part, holding section and the connection weld part and holding section, the weld part with it is described Metal weld tabs is welded to connect, and the holding section clamping is fixed on the frame, and the conducting arm is located in the middle part and institute It states between frame, the middle part is provided with the protrusion towards the conducting arm protrusion, and the protrusion compresses described in contact Arm is connected.

Preferably, the conducting arm is provided with matches projecting arm with the shape of the protrusion, and the projecting arm is located at For the protrusion at the projected position on the conducting arm surface, the protrusion compresses the contact projecting arm.

Preferably, the shape of the protrusion is arc-shaped.

Preferably, elastic damping part is provided between the conducting arm and the frame.

Preferably, the elastic damping part is foam or rubber.

Preferably, the frame is provided with the groove to match with the shape of the protrusion, and the groove is located at described At the projected position on the frame surface, the elastic damping part is placed in the groove projecting arm.

Preferably, the vibrational system includes the sound of the vibrating diaphragm for being fixed on the frame, the driving diaphragm oscillations sounding Circle；The support portion of the frame body and the voice coil connect and support the voice coil.

It preferably, further include the magnetic circuit system for driving vibrational system vibration, the magnetic circuit system includes being fixed on the basin It the magnetic bowl of frame and is contained in the magnetic bowl and the magnet steel to form magnetic gap is set with magnetic bowl interval, the voice coil plugs simultaneously It is suspended in the magnetic gap.

The conducting of microphone device provided by the utility model, flexible circuit board and conductive terminal is by being arranged in conduction Protrusion on terminal compresses contact flexible circuit board and realizes, avoids welding procedure bring stress collection and neutralizes vibration system The unreliability factors such as the torque generated to flexible circuit board of uniting is larger, can effectively promote the fatigue life of microphone device.

[Detailed description of the invention]

Fig. 1 is the exploded view of microphone device provided by the utility model；

Fig. 2 is the perspective view of microphone device provided by the utility model；

Fig. 3 is the perspective view of the flexible circuit board of microphone device provided by the utility model；

Fig. 4 is the perspective view of the conductive terminal of microphone device provided by the utility model；

Sectional view of the microphone device along line A-A that Fig. 5 is Fig. 2；

Fig. 6 is the assembling stereogram of frame provided by the utility model, voice coil, flexible circuit board and conductive terminal；

Fig. 7 is the assembling stereogram of frame provided by the utility model, voice coil and flexible circuit board.

Fig. 1 to Fig. 7, comprising: frame 1, metal weld tabs 11, groove 12, vibrational system 2, vibrating diaphragm 21, voice coil 22, top dome 23, Magnetic circuit system 3, magnet steel 32, pole piece 33, flexible circuit board 4, frame body 41, holding section 411, support portion 412, connects magnetic bowl 31 Socket part 413, conducting arm 42, projecting arm 421, conductive terminal 5, weld part 51, holding section 52, middle part 53, protrusion 531, bullet Property damping piece 6, upper cover 7, auxiliary vibrating diaphragm 8.

[specific embodiment]

With reference to the accompanying drawing, it elaborates to the utility model.

It as shown in Figure 1 to Figure 3, is microphone device provided by the utility model comprising frame 1 is contained in the frame 1 Vibrational system 2, magnetic circuit system 3 and flexible circuit board 4 and conductive terminal 5.The frame 1, which is provided with, exposes to the frame 1 metal weld tabs 11.In present embodiment, microphone device further includes the upper cover 7 and be attached at the flexibility that lid is located in frame 1 The auxiliary vibrating diaphragm 8 of wiring board 4.

The vibrational system 2 includes the voice coil of the vibrating diaphragm 21 for being fixed on the frame 1, driving 21 vibration sounding of vibrating diaphragm 22 and the top dome 23 that is attached on the vibrating diaphragm 21；The magnetic circuit system 3 is for driving the vibrational system 2 to vibrate comprising It is fixed on the magnetic bowl 31 of the frame 1, be contained in the magnetic bowl 31 and forms magnetic gap with the setting of the magnetic bowl 31 interval Magnet steel 32 and the pole piece 33 for being attached at 32 top of magnet steel, the voice coil 22 is plugged and is suspended in the magnetic gap, described Pole piece 33 is made of permeability magnetic material, for magnetic induction line to be limited to inside microphone device, reduces the magnetic flux leakage of microphone device.

The flexible circuit board 4 includes frame body 41 and at least two conducting arms 42, and the frame body 41 includes solid Due to the holding section 411 of the frame 1, the support portion 412 that is connect with 22 bottom of voice coil and the connection holding section 411 and support portion 412 interconnecting piece 413, the conducting arm 42 is from the holding section both ends along close to 11 side of metal weld tabs Extend to bending.4 one side of flexible circuit board is that voice coil 22 introduces external electric signal, is on the other hand mentioned for the voice coil 22 For support, on the one hand avoiding through lead is the problem of being easy broken string when the voice coil 22 introduces external electric signal, to improve The reliability of electrical connection, on the other hand the vibration for vibrational system 2 provides restoring force and cushion effect.

In the present embodiment, frame body 41 sets up 22 two sides of voice coil separately, between the voice coil 22 and frame 1, bone The curved bending of the interconnecting piece 413 connection holding section 411 and support portion 412 of frame ontology 41, conducting arm 42 is two, from appointing Extend at the both ends of the holding section 411 of the frame body 41 of meaning side.In other embodiments, conducting arm 42 can also be with Frame body 41 joins end to end, and cricoid flexible circuit board 4 is collectively formed.

The conductive terminal 5 includes weld part 51, holding section 52 and connects in the weld part 51 and holding section 52 Between portion 53, the weld part 51 is welded to connect with the metal weld tabs 11, and the holding section 52 is connect with the frame 1, described Conducting arm 42 is located between the middle part 53 and the frame 1, and the middle part 53 is provided with towards the conducting arm 42 The protrusion 531 of protrusion, the protrusion 531 compress the contact conducting arm 42.Further, the conducting arm 42 is arranged Have and match projecting arm 421 with the shape of the protrusion 531, the projecting arm 421 is located at the protrusion 531 described At the projected position that 42 surface of arm is connected, the protrusion 531 compresses contact projecting arm 421.

In present embodiment, the shape of the protrusion 531 be the arc-shaped and described projecting arm 421 shape with it is described convex The shape in portion matches out, is also arc-shaped convex.In other embodiments, the protrusion 531 and projecting arm 421 can also With other shapes, as long as being able to achieve the good contact of the two, it is ensured that the conducting of conductive terminal 5 and flexible circuit board 4.

In present embodiment, elastic damping part 6 is additionally provided between the conducting arm 42 and the frame 1.The protrusion Portion 531 compress the contact projecting arm 421 when, elastic damping part 6 not only plays buffer protection function to projecting arm 421, also It can deform to generate upward restoring force under the extruding of projecting arm 421, be further ensured that protrusion 531 and projecting arm 421 compress contact, it is ensured that the conducting of conductive terminal 5 and flexible circuit board 4 improves the reliability of microphone device.Specifically, The elastic damping part 6 is foam or rubber.

In present embodiment, the frame 1 is additionally provided with the groove 12 to match with the shape of the protrusion 531, institute It states groove 12 and is located at the projecting arm 421 at the projected position on 1 surface of frame, the elastic damping part 6 is placed in described In groove 12.

The conducting of microphone device provided by the utility model, flexible circuit board and conductive terminal is by being arranged in conduction Protrusion on terminal compresses contact flexible circuit board and realizes, avoids welding procedure bring stress collection and neutralizes vibration system The unreliability factors such as the torque generated to flexible circuit board of uniting is larger, can effectively promote the fatigue life of microphone device.

The foregoing is merely the better embodiment of the utility model, the protection scope of the utility model is not with above-mentioned reality The mode of applying is limited, as long as those of ordinary skill in the art's equivalent modification according to made by the utility model disclosure or change Change, should be included in the scope of the protection described in the claims.

Claims (8)

1. a kind of microphone device comprising frame, conductive terminal, the vibrational system and flexible circuit board for being contained in the frame； The frame is provided with the metal weld tabs for exposing to the frame；The flexible circuit board includes that frame body and at least two lead Logical arm, the frame body include that the holding section for being fixed on the frame and the vibrational system connect and support vibrational system Support portion and the connection holding section and support portion interconnecting piece, the conducting arm is from the holding section both ends along close institute The bending of metal weld tabs direction is stated to extend；The conductive terminal includes weld part, holding section and the connection weld part and clamping The middle part in portion, the weld part and the metal weld tabs are welded to connect, and the holding section clamping is fixed on the frame, special Sign is that the conducting arm is located between the middle part and the frame, and the middle part is provided with towards the conducting The protrusion of arm protrusion, the protrusion compress the contact conducting arm.

2. microphone device according to claim 1, it is characterised in that: the conducting arm is provided with the shape with the protrusion Shape matches projecting arm, and the projecting arm is located at the protrusion at the projected position on the conducting arm surface, the protrusion Portion compresses the contact projecting arm.

3. microphone device according to claim 2, it is characterised in that: the shape of the protrusion is arc-shaped.

4. microphone device according to claim 2, it is characterised in that: be provided with bullet between the projecting arm and the frame Property damping piece.

5. microphone device according to claim 4, it is characterised in that: the elastic damping part is foam or rubber.

6. microphone device according to claim 4, it is characterised in that: the frame is provided with the shape with the protrusion The groove to match, the groove are located at the projecting arm at the projected position on the frame surface, the elastic damping part It is placed in the groove.

7. microphone device according to claim 1, it is characterised in that: the vibrational system includes being fixed on the frame The voice coil of vibrating diaphragm, the driving diaphragm oscillations sounding；The support portion of the frame body and the voice coil connect and support described Voice coil.

8. microphone device according to claim 7, it is characterised in that: further include the magnetic circuit system for driving vibrational system vibration System, the magnetic circuit system include being fixed on the magnetic bowl of the frame and being contained in the magnetic bowl and be arranged with magnetic bowl interval The magnet steel of magnetic gap is formed, the voice coil is plugged and is suspended in the magnetic gap.