CN213462315U

CN213462315U - Miniature loudspeaker

Info

Publication number: CN213462315U
Application number: CN202022260332.7U
Authority: CN
Inventors: 林嘉平
Original assignee: Yiyang Xinwei Acoustic Technology Co Ltd
Current assignee: Yiyang Xinwei Acoustic Technology Co Ltd
Priority date: 2020-10-12
Filing date: 2020-10-12
Publication date: 2021-06-15
Anticipated expiration: 2030-10-12

Abstract

The utility model discloses a micro loudspeaker, including basin frame, centering support piece and voice coil loudspeaker voice coil, the voice coil loudspeaker voice coil of centering support piece connection basin frame and being located the basin frame, the voice coil loudspeaker voice coil is including the body and the lead wire that link to each other, and the one end of pin connection body is for going into the line section, is equipped with on the centering support piece to be used for keeping away the groove of dodging of position to going into the line section. When the line-in section of the voice coil is led out from the edge of the inner side of the body to the edge of the outer side of the body, the line-in section of the voice coil can be positioned in the avoiding groove of the centering support sheet, so that the problems that the centering support sheet is not bonded with the voice coil are solved, the bonding effect of the voice coil and the centering support sheet is favorably ensured, the voice coil and the centering support sheet are bonded more firmly, the structural stability and the reliability of the micro-speaker are improved, the service life of the micro-speaker is favorably prolonged, and the phenomenon that the voice coil and the centering support sheet are separated accidentally; simultaneously, can increase the interval between voice coil loudspeaker voice coil bottom and the magnetic shield, avoid the voice coil loudspeaker voice coil to collide with the magnetic shield at the in-process of vibration, lead to appearing the noise, fall phenomena such as voice coil loudspeaker voice coil.

Description

Miniature loudspeaker

Technical Field

The utility model relates to an electroacoustic transducer technical field especially relates to a miniature speaker.

Background

At present, the micro speaker and the receiver used by the mobile terminal are mostly moving coil type speakers. The moving-coil loudspeaker comprises a magnetic circuit system, a vibration system and a basin frame for accommodating and fixing the magnetic circuit system and the vibration system. The vibration system comprises a vibrating diaphragm, a ball top, a centering support sheet and a voice coil; the centering support piece comprises a first fixing part and a second fixing part, the first fixing part is fixedly connected with the supporting system (basin frame) and the vibrating diaphragm, the second fixing part is connected with the voice coil and the vibrating diaphragm, and the first fixing part and the second fixing part are connected into a whole through a connecting arm. The first fixing part and the second fixing part are provided with bonding pads, the bonding pads of the second fixing plate are welded with the voice coil lead, and the bonding pads of the first fixing part are welded with the bonding pads of the frame, so that the voice coil is conducted with an external power supply.

However, the voice coil lead wire is welded on the pad of the centering branch piece, the incoming line of the voice coil needs to be led out from the inner side edge of the voice coil body to the outer side edge of the voice coil body, so as to be welded with the pad of the centering branch piece, the top surface of the voice coil is uneven when the voice coil is led in the line, when the voice coil is bonded with the centering branch piece, the bonding surface is not flat, the bonding effect is seriously influenced, the bonding is not firm, the reliability is low, the phenomenon that the voice coil is separated from the centering branch piece can occur after long-term fatigue use, meanwhile, the distance between the bottom of the voice coil corresponding to the incoming line of the voice coil and the magnetic cover is reduced, when the loudspeaker works, the voice coil can collide with the magnetic cover, noise is generated, and when the phenomenon that the service life of the micro loudspeaker is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: a micro speaker having a stable structure is provided.

In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a micro loudspeaker, includes basin frame, centering support and voice coil loudspeaker voice coil, the centering support is connected the basin frame reaches and is located in the basin frame the voice coil loudspeaker voice coil, the voice coil loudspeaker voice coil is including the body and the lead wire that link to each other, the pin connection the one end of body is for going into the line section, it is right to be equipped with on the centering support it keeps away the groove of dodging of position to go into the line section.

Further, the body is projected in the height direction, and a part of the projection area of the avoidance groove is located on the outer side of the projection area of the body.

Further, glue is contained in the avoiding groove and connected with the body and the centering support piece.

Further, the glue solution wraps at least partial area of the incoming line segment.

Furthermore, the centering support piece is connected with the top surface of the body, and the wire inlet section is located above the body.

Further, the centering branch piece comprises a bottom material layer and a base material layer which are connected in a stacking mode, and the avoidance groove is formed in the bottom material layer.

Further, the bottom material layer is including range upon range of consecutive bottom protective layer, the first glue film in bottom and bottom conducting layer, and the bottom conducting layer is connected the substrate layer, it is located to dodge partly in the groove on the bottom conducting layer, it runs through to dodge the groove the bottom protective layer with the first glue film in bottom.

Further, the bottom material layer is still including connecting the bottom conducting layer with the bottom second glue film of substrate layer, it is located to dodge partly of groove on the bottom second glue film, it runs through to dodge the groove the bottom protective layer the first glue film in bottom reaches the bottom conducting layer.

Furthermore, one part of the avoiding groove is positioned on the bottom protective layer, and the other part of the avoiding groove is positioned on the first glue layer at the bottom.

Furthermore, the centering support piece further comprises a top material layer connected with the base material layer in a laminated mode, and the top material layer is located above the base material layer.

The beneficial effects of the utility model reside in that: when the line-in section of the voice coil is led out from the edge of the inner side of the body to the edge of the outer side of the body, the line-in section of the voice coil can be positioned in the avoiding groove of the centering support sheet, so that the problems that the centering support sheet is not bonded with the voice coil are solved, the bonding effect of the voice coil and the centering support sheet is favorably ensured, the voice coil and the centering support sheet are bonded more firmly, the structural stability and the reliability of the micro-speaker are improved, the service life of the micro-speaker is favorably prolonged, and the phenomenon that the voice coil and the centering support sheet are separated accidentally; simultaneously, can increase the interval between voice coil loudspeaker voice coil bottom and the magnetic shield, avoid the voice coil loudspeaker voice coil to collide with the magnetic shield at the in-process of vibration, lead to appearing the noise, fall phenomena such as voice coil loudspeaker voice coil.

Drawings

Fig. 1 is an exploded view of the micro-speaker of the present invention;

fig. 2 is a cross-sectional view of the micro-speaker of the present invention;

FIG. 3 is an enlarged view of detail A in FIG. 2;

fig. 4 is a schematic view of a laminated structure of a centering support according to a first embodiment of the present invention;

fig. 5 is a schematic view of a laminated structure of a centering branch piece according to a second embodiment of the present invention.

Description of reference numerals:

1. a basin stand;

2. a magnetic circuit assembly;

3. a voice coil; 31. a body; 32. a lead wire; 321. entering a line segment;

4. a centering support; 41. an avoidance groove; 42. a base material layer; 421. a bottom protective layer; 422. a first glue layer at the bottom; 423. a bottom conductive layer; 424. a second glue layer at the bottom; 43. a substrate layer; 44. a top material layer;

5. vibrating diaphragm;

6. and (4) a ball top.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1 to 5, a micro speaker includes a frame 1, a centering support 4 and a voice coil 3, the centering support 4 is connected to the frame 1 and the voice coil 3 located in the frame 1, the voice coil 3 includes a body 31 and a lead 32 connected to each other, one end of the lead 32 connected to the body 31 is a line-entering section 321, and the centering support 4 is provided with an avoiding groove 41 for avoiding the line-entering section 321.

From the above description, the beneficial effects of the present invention are: when the line-in section 321 of the voice coil 3 is led out from the edge of the inner side of the body 31 to the edge of the outer side of the body 31, the line-in section can be positioned in the avoiding groove 41 of the centering support 4, so that the problems that the bonding between the centering support 4 and the voice coil 3 is not uniform and the like are solved, the bonding effect between the voice coil 3 and the centering support 4 is favorably ensured, the bonding between the voice coil 3 and the centering support 4 is firmer, the structural stability and reliability of the micro-speaker are improved, the service life of the micro-speaker is favorably prolonged, and the phenomenon that the voice coil 3 and the centering support 4 are accidentally separated is prevented; simultaneously, can increase the interval between 3 bottoms of voice coil loudspeaker voice coil and the magnetic shield, avoid voice coil loudspeaker voice coil 3 to collide with the magnetic shield at the in-process of vibration, lead to appearing the noise, fall phenomena such as voice coil loudspeaker voice coil 3.

Further, the projection is performed along the height direction of the body 31, and a part of the projection area of the avoiding groove 41 is located outside the projection area of the body 31.

As can be seen from the above description, the avoiding groove 41 can well avoid the incoming line segment 321 crossing over the single side of the voice coil body 3.

Further, glue is contained in the avoiding groove 41, and the glue is connected with the body 31 and the centering branch piece 4.

As can be seen from the above description, when the voice coil 3 is bonded to the spider 4, the avoiding groove 41 can accommodate more glue, so as to increase the bonding strength between the voice coil 3 and the spider 4, and further improve the structural stability of the micro-speaker.

Further, the glue solution wraps at least a partial area of the incoming line segment 321.

As can be seen from the above description, the glue solution is wrapped into the line segment 321, so that the stress on the lead 32 can be effectively relieved, the wire breakage can be avoided, and the structural stability of the micro-speaker can be further improved.

Further, the centering branch piece 4 is connected to the top surface of the body 31, and the line incoming segment 321 is located above the body 31.

Further, the centering branch piece 4 includes a bottom material layer 42 and a base material layer 43 which are connected in a laminated manner, and the avoiding groove 41 is formed in the bottom material layer 42.

As is apparent from the above description, the centering branch 4 is a flexible circuit board formed of a multi-layer material, and the escape groove 41 may be formed by partially removing the single-layer or multi-layer material.

Further, the bottom material layer 42 includes a bottom protection layer 421, a bottom first glue layer 422 and a bottom conductive layer 423 that are sequentially stacked, the bottom conductive layer 423 is connected to the substrate layer 43, a part of the avoiding groove 41 is located on the bottom conductive layer 423, the avoiding groove 41 runs through the bottom protection layer 421 and the bottom first glue layer 422.

Further, the bottom material layer 42 further includes a connection the bottom conductive layer 423 with the bottom second glue layer 424 of the substrate layer 43, a part of the avoiding groove 41 is located on the bottom second glue layer 424, the avoiding groove 41 runs through the bottom protection layer 421, the bottom first glue layer 422 and the bottom conductive layer 423.

Further, a portion of the avoiding groove 41 is located in the bottom protection layer 421, and another portion of the avoiding groove 41 is located in the bottom first glue layer 422.

Further, the centering branch piece 4 further comprises a top material layer 44 laminated with the substrate layer 43, and the top material layer 44 is located above the substrate layer 43.

As can be seen from the above description, the specific structural form of the centering branch 4 is various, which is beneficial to enrich the diversity of the micro-speaker.

Example one

Referring to fig. 1 to 4, a first embodiment of the present invention is: referring to fig. 1 to 3, a micro speaker includes, but is not limited to, a mobile phone, a tablet pc, and the like, and includes a frame 1, a magnetic circuit assembly 2, a voice coil 3, a centering pad 4, a vibrating diaphragm 5, and a dome 6, where the magnetic circuit assembly 2 and the vibrating diaphragm 5 are respectively disposed on the frame 1, the dome 6 is disposed on the vibrating diaphragm 5, the centering pad 4 is connected to the frame 1 and the voice coil 3 located in the frame 1, the voice coil 3 includes a body 31 and a lead 32 connected to each other, one end of the lead 32 connected to the body 31 is an incoming line segment 321, and the centering pad 4 is provided with an avoiding groove 41 for avoiding the incoming line segment 321.

The centering support piece 4 comprises a first fixing portion, a connecting arm and a second fixing portion, a first bonding pad is arranged on the first fixing portion, a second bonding pad electrically communicated with the first bonding pad is arranged on the second fixing portion, and the lead 32 is welded and communicated with the first bonding pad.

In this embodiment, the top surface of the centering branch piece 4 is connected to the vibrating diaphragm 5, the bottom surface of the centering branch piece 4 is connected to the top surface of the body 31, the line segment 321 spans from the inner edge of the body 31 to the outer side of the body 31 through the upper side of the body 31, and the avoiding groove 41 is formed in the bottom of the centering branch piece 4. It is understood that in other embodiments, when the line-entering segment 321 is located below the body 31, the damper 4 is connected to the bottom surface of the body 31, and the avoiding groove 41 is located at the top of the damper 4.

As shown in fig. 3, since one end of the incoming line segment 321, which is far from the main body 31, is to be extended out of the escape groove 41, the projection is performed along the height direction of the main body 31, and a part of the projection area of the escape groove 41 is located outside the projection area of the main body 31. Further expand, it can be the ladder groove to dodge groove 41, the body 31 top corresponds it is darker to dodge the regional degree of depth of groove 41, the body 31 outside corresponds it is shallower to dodge the regional degree of depth of groove 41, so, can compromise the structural strength who dodges effect and centering branch piece.

Further, the avoidance slot 41 is provided with glue solution therein, the glue solution connects the body 31 and the centering branch piece 4, and preferably, the glue solution wraps at least a partial area of the incoming line segment 321.

Referring to fig. 4, in general, the centering support sheet 4 is a flexible circuit board, in this embodiment, the centering support sheet 4 includes a bottom material layer 42 and a substrate layer 43 that are stacked and connected, and the avoiding groove 41 is disposed on the bottom material layer 42.

Bottom material layer 42 is including range upon range of continuous bottom protection layer 421, the first glue film 422 in bottom and bottom conducting layer 423 in proper order, and bottom conducting layer 423 connects the substrate layer 43, it is located to dodge partly of groove 41 on the bottom conducting layer 423, it runs through to dodge groove 41 bottom protection layer 421 with the first glue film 422 in bottom. Of course, a part of the avoiding groove 41 is located in the bottom protective layer 421, another part of the avoiding groove 41 is located in the bottom first glue layer 422, at this time, the avoiding groove 41 does not exist on the bottom conductive layer 423, in addition, it is also feasible that the avoiding groove 41 is only arranged on the bottom conductive layer 423, at this time, the avoiding groove 41 does not exist on the bottom protective layer 421 and the bottom first glue layer 422, that is, the incoming line segment 321 passes through the conductive layer.

Optionally, the centering branch piece 4 further includes a top material layer 44 laminated to the substrate layer 43, where the top material layer 44 is located above the substrate layer 43, that is, the bottom material layer 42 and the top material layer 44 are located on two opposite sides of the substrate layer 43, respectively. Similarly, the top material layer 44 may be a laminated structure formed by laminating and connecting a plurality of material layers, as well as the bottom material layer 42.

Example two

Referring to fig. 1 to fig. 3 and fig. 5, another technical solution is provided for the specific structure of the bottom material layer 42 based on the first embodiment, which is different from the first embodiment in that: the bottom material layer 42 further comprises a bottom conductive layer 423 connected to the bottom second adhesive layer 424 of the substrate layer 43, at this time, a part of the avoiding groove 41 is located on the bottom second adhesive layer 424, the avoiding groove 41 runs through the bottom protection layer 421, the bottom first adhesive layer 422 and the bottom conductive layer 423.

To sum up, the utility model provides a micro loudspeaker, stable in structure, reliable, durable, long service life.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a micro loudspeaker, includes basin frame, centering support chip and voice coil loudspeaker voice coil, the centering support chip is connected the basin frame and being located in the basin frame the voice coil loudspeaker voice coil, the voice coil loudspeaker voice coil is including the body and the lead wire that link to each other, the pin connection the one end of body is for going into line section, its characterized in that: and the centering support piece is provided with an avoiding groove for avoiding the line entering section.

2. The micro-speaker of claim 1, wherein: and projecting along the height direction of the body, wherein a part of the projection area of the avoidance groove is positioned outside the projection area of the body.

3. The micro-speaker of claim 1, wherein: glue is contained in the avoiding groove and connected with the body and the centering support piece.

4. The micro-speaker of claim 3, wherein: the glue solution wraps at least partial area of the incoming line segment.

5. The micro-speaker of claim 1, wherein: the centering support piece is connected with the top surface of the body, and the wire inlet section is located above the body.

6. The micro-speaker of claim 5, wherein: the centering support piece comprises a bottom material layer and a base material layer which are connected in a stacked mode, and the avoidance groove is formed in the bottom material layer.

7. The micro-speaker of claim 6, wherein: the bottom material layer is including the consecutive bottom protective layer of range upon range of, the first glue film in bottom and bottom conducting layer, and the bottom conducting layer is connected the substrate layer, it is located to dodge partly in groove on the bottom conducting layer, it runs through to dodge the groove the bottom protective layer with the first glue film in bottom.

8. The micro-speaker of claim 7, wherein: the bottom material layer is still including connecting the bottom conducting layer with the bottom second glue film of substrate layer, it is located to dodge partly of groove on the bottom second glue film, it runs through to dodge the groove the bottom protective layer the first glue film in bottom reaches the bottom conducting layer.

9. The micro-speaker of claim 7, wherein: one part of the avoiding groove is positioned on the bottom protective layer, and the other part of the avoiding groove is positioned on the first glue layer at the bottom.

10. The micro-speaker of claim 6, wherein: the centering support piece further comprises a top material layer connected with the base material layer in a laminated mode, and the top material layer is located above the base material layer.