CN211959546U - Miniature loudspeaker - Google Patents

Abstract

The utility model discloses a micro loudspeaker, including basin frame and centering piece, centering piece is including consecutive interior fixed part, linking arm and outer fixed part, the linking arm is including consecutive first arm, second arm and third arm, and first arm links to each other with interior fixed part, and the third arm links to each other with outer fixed part, the basin frame is equipped with and is used for keeping away a breach to the third arm. Compared with the prior art, the utility model discloses well third arm is equivalent to the partly of drawing out in the external fixation portion, and its effect is the length of extension linking arm, and is equipped with the position breach of keeping away the position to the third arm on the basin frame for the third arm also can normally vibrate, so the existence of third arm can be under the deformation volume of the effectual increase centering support piece under the prerequisite that does not change the micro-speaker volume, thereby avoid the conducting layer of linking arm to produce crackle, fracture, and then prolonged micro-speaker's life.

Description

Miniature loudspeaker

Technical Field

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

Background

As a device capable of converting electric energy into acoustic energy, a micro speaker is widely used in microelectronic devices such as smart phones, camcorders, cameras, and notebook computers. The micro-speaker generally includes a magnetic circuit system, a vibration system and a supporting system, wherein the vibration system includes a dome, a diaphragm, a voice coil and a centering pad. The voice coil is electrically connected with an external circuit through the conducting layer of the spider, as shown in fig. 1, the spider 5 comprises an inner fixing portion 6 and an outer fixing portion 8, the outer fixing portion 8 is fixedly connected with the supporting system (i.e. the basin stand 4), the inner fixing portion 6 is connected with the voice coil, and the inner fixing portion 6 and the outer fixing portion 8 are integrally connected through a connecting arm 7. The centering support piece 5 can ensure that the voice coil is vertical without deflection, and effectively prevents the polarization of the vibrating diaphragm.

However, the existing micro-speaker requires more and more miniaturization, has more compact structure and smaller design space of the centering disk, and has the problems that the connecting arm (namely the vibrating part) of the centering disk is insufficient in length and the corresponding deformation quantity is insufficient according to the existing design.

After a fatigue test or long-term use of the existing micro-speaker, the connecting arm (i.e. the vibrating portion) of the centering disk is easy to crack due to insufficient length and insufficient deformation, so that the conducting layer on the connecting arm is broken, and the service life of the speaker is affected.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: a micro speaker having a long life 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 and centering piece, centering piece is including consecutive interior fixed part, linking arm and outer fixed part, the linking arm is including consecutive first arm, second arm and third arm, and first arm links to each other with interior fixed part, and the third arm links to each other with outer fixed part, the basin puts up and is used for keeping away the position breach of position to the third arm.

Furthermore, the avoiding gap is communicated with the outer wall surface of the basin frame.

Furthermore, the first arm is arranged along a first direction of the basin frame, the second arm and the third arm are respectively arranged along a second direction of the basin frame, the first direction is perpendicular to the second direction, and the second arm and the third arm are arranged oppositely.

Furthermore, the connecting arm further comprises a first bending part and a second bending part, the first bending part is connected with the first arm, the second bending part is connected with the second arm, the second bending part is connected with the third arm, the first bending part and the second arm form an L shape, and the second arm, the second bending part and the third arm form a U shape.

Furthermore, the centering support piece is provided with a voice coil lead avoiding notch.

Further, the outer fixing part is bonded to the basin stand.

Furthermore, an anti-overflow glue groove is formed in the basin frame and is located in a bonding area of the outer fixing portion and the basin frame.

Furthermore, the voice coil is further included, and the voice coil is bonded with the inner fixing portion.

Furthermore, the voice coil loudspeaker also comprises a vibrating diaphragm component, and the vibrating diaphragm component is respectively connected with the voice coil and the basin frame.

Furthermore, the magnetic circuit component is fixed on the basin frame.

The beneficial effects of the utility model reside in that: compared with the prior art, the utility model discloses well third arm is equivalent to the partly of drawing out in the external fixation portion, and its effect is the length of extension linking arm, and is equipped with the position breach of keeping away the position to the third arm on the basin frame for the third arm also can normally vibrate, so the existence of third arm can be under the deformation volume of the effectual increase centering support piece under the prerequisite that does not change the micro-speaker volume, thereby avoid the conducting layer of linking arm to produce crackle, fracture, and then prolonged micro-speaker's life.

Drawings

FIG. 1 is a schematic structural diagram of a micro-speaker according to the prior art;

fig. 2 is an exploded view of a micro-speaker according to a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a micro speaker according to a first embodiment of the present invention;

fig. 4 is a schematic structural diagram of a centering chip in a micro-speaker according to a first embodiment of the present invention;

fig. 5 is a schematic structural diagram of a frame in a micro speaker according to a first embodiment of the present invention.

Description of reference numerals:

1. a voice coil; 2. a diaphragm assembly; 3. a magnetic circuit assembly; 4. a basin stand; 5. a centering support; 6. an inner fixing portion; 7. a connecting arm; 71. a first arm; 72. a second arm; 73. a third arm; 74. a first bent portion; 75. a second bent portion; 8. an outer fixing portion; 9. the voice coil lead avoids the gap; 10. an anti-overflow glue groove; 11. avoiding the gap.

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. 2 to 5, a micro-speaker includes a frame 4 and a centering sheet 5, the centering sheet 5 includes an inner fixing portion 6, a connecting arm 7 and an outer fixing portion 8 which are connected in sequence, the connecting arm 7 includes a first arm 71, a second arm 72 and a third arm 73 which are connected in sequence, the first arm 71 is connected with the inner fixing portion 6, the third arm 73 is connected with the outer fixing portion 8, and the frame 4 is provided with a avoiding notch 11 for avoiding the third arm 73.

From the above description, the beneficial effects of the present invention are: compared with the prior art, the utility model discloses well third arm 73 is equivalent to and is drawn some from outer fixed part 8, and its effect is the length of extension linking arm 7, and is equipped with on the basin frame 4 and keeps away a breach 11 to the third arm 73 position of keeping away, make third arm 73 also can normally vibrate, so the existence of third arm 73 can be under the prerequisite that does not change the miniature speaker volume effectual increase centering support 5 deformation volume, thereby avoid the conducting layer of linking arm 7 to produce crackle, the fracture, and then prolonged miniature speaker's life.

Furthermore, the avoiding gap 11 is communicated with the outer wall surface of the basin frame 4.

As can be seen from the above description, the basin stand 4 is easy to process, which is beneficial to reducing the manufacturing difficulty of the injection mold of the basin stand 4.

Further, the first arm 71 is arranged along a first direction of the frame 4, the second arm 72 and the third arm 73 are respectively arranged along a second direction of the frame 4, the first direction is perpendicular to the second direction, and the second arm 72 and the third arm 73 are arranged oppositely.

Further, the connecting arm 7 further includes a first bent portion 74 connecting the first arm 71 and the second arm 72 and a second bent portion 75 connecting the second arm 72 and the third arm 73, the first arm 71, the first bent portion 74 and the second arm 72 form an L shape, and the second arm 72, the second bent portion 75 and the third arm 73 form a U shape.

As can be seen from the above description, the connecting arm 7 is bent for multiple times, which is beneficial to fully extending the length of the connecting arm 7 in a limited space and further increasing the deformation of the centering branch piece 5.

Furthermore, voice coil lead avoiding notches 9 are formed in the centering support piece 5.

As can be seen from the above description, the line of the voice coil 1 is wound from the outside to the inside, and the voice coil lead avoiding notch 9 is arranged at the position of the centering branch piece 5 corresponding to the line of the voice coil 1.

Further, the outer fixing part 8 is adhered to the frame 4.

From the above description, the connection mode of the centering branch piece 5 and the frame 4 is simple, which is beneficial to improving the assembly efficiency of the micro-speaker.

Further, an anti-glue-overflow groove 10 is formed in the basin frame 4, and the anti-glue-overflow groove 10 is located in the bonding area between the outer fixing portion 8 and the basin frame 4.

From the above description, the glue overflow preventing groove 10 can prevent the glue overflow phenomenon from occurring when the centering support 5 is bonded with the frame 4, which is beneficial to ensuring the assembly yield of the micro-speaker.

Further, the voice coil comprises a voice coil 1, and the voice coil 1 is adhered to the inner fixing portion 6.

Further, still include vibrating diaphragm subassembly 2, vibrating diaphragm subassembly 2 is connected the voice coil loudspeaker voice coil 1 respectively with basin frame 4.

Further, the magnetic circuit component 3 is fixed on the basin frame 4.

Example one

Referring to fig. 2 to 5, a first embodiment of the present invention is: as shown in fig. 2, a micro speaker, which can be used in terminal devices such as mobile phones, cameras, notebook computers, etc., includes a voice coil 1, a diaphragm assembly 2, a magnetic circuit assembly 3, a frame 4, and a centering sheet 5, wherein the diaphragm assembly 2 is respectively connected to the voice coil 1 and the frame 4, the centering sheet 5 is respectively connected to the voice coil 1 and the frame 4, the magnetic circuit assembly 3 is fixed on the frame 4, the magnetic circuit assembly 3 has a magnetic gap, the voice coil 1 is located in the magnetic gap, please refer to fig. 3 to 5, the centering sheet 5 includes an inner fixing portion 6, a connecting arm 7, and an outer fixing portion 8 that are sequentially connected, the voice coil 1 is bonded to the inner fixing portion 6, the outer fixing portion 8 is bonded to the frame 4, the connecting arm 7 includes a first arm 71, a second arm 72, and a third arm 73 that are sequentially connected, the first arm 71 is connected to the inner fixing portion 6, the third arm 73 is connected with the outer fixing part 8, the basin frame 4 is provided with a position avoiding gap 11 used for avoiding the position of the third arm 73, and the position avoiding gap 11 is communicated with the outer wall surface of the basin frame 4.

Referring to fig. 3 and 4, in the embodiment, the first arm 71 is disposed along a first direction of the basin stand 4, the second arm 72 and the third arm 73 are disposed along a second direction of the basin stand 4, respectively, the second arm 72 and the third arm 73 are disposed opposite to each other, the first direction is perpendicular to the second direction, for example, the first direction is a length direction of the basin stand 4, and the second direction is a width direction of the basin stand 4. Specifically, the connecting arm 7 further includes a first bent portion 74 connecting the first arm 71 and the second arm 72 and a second bent portion 75 connecting the second arm 72 and the third arm 73, the first arm 71, the first bent portion 74 and the second arm 72 form an L shape, the second arm 72, the second bent portion 75 and the third arm 73 form a U shape, and the third arm 73 is disposed close to the outer wall surface of the frame 4.

As shown in fig. 4, the centering branch piece 5 is provided with a voice coil lead avoiding notch 9 for avoiding the line entering position of the voice coil 1.

Referring to fig. 3 and 5, an anti-glue-overflow groove 10 is formed in the basin frame 4, and the anti-glue-overflow groove 10 is located in a bonding area between the outer fixing portion 8 and the basin frame 4.

To sum up, the utility model provides an existence of third arm can be under the deformation volume of effectual increase centering support piece under the prerequisite that does not change the micro loudspeaker volume among the micro loudspeaker to avoid the conducting layer of linking arm to produce crackle, fracture, and then prolonged micro loudspeaker's 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 (10)

1. The utility model provides a micro loudspeaker, includes basin frame and centering piece, centering piece is including consecutive interior fixed part, linking arm and outer fixed part, its characterized in that: the connecting arm comprises a first arm, a second arm and a third arm which are sequentially connected, the first arm is connected with the inner fixing portion, the third arm is connected with the outer fixing portion, and the basin frame is provided with a position avoiding notch used for avoiding the position of the third arm.

2. The micro-speaker of claim 1, wherein: the avoiding gap is communicated with the outer wall surface of the basin frame.

3. The micro-speaker of claim 1, wherein: the first arm is arranged along a first direction of the basin frame, the second arm and the third arm are arranged along a second direction of the basin frame respectively, the first direction is perpendicular to the second direction, and the second arm and the third arm are arranged oppositely.

4. The micro-speaker of claim 3, wherein: the connecting arm further comprises a first bending part and a second bending part, the first bending part is connected with the first arm, the second bending part is connected with the second arm, the second bending part is connected with the third arm, the first bending part and the second arm form an L shape, and the second arm, the second bending part and the third arm form a U shape.

5. The micro-speaker of claim 1, wherein: and the centering support piece is provided with a voice coil lead avoiding notch.

6. The micro-speaker of claim 1, wherein: the outer fixing part is bonded to the frame.

7. The micro-speaker of claim 6, wherein: the basin frame is provided with an anti-overflow glue groove, and the anti-overflow glue groove is positioned in the bonding area of the outer fixing part and the basin frame.

8. The micro-speaker of claim 1, wherein: still include the voice coil, the voice coil with the bonding of inner fixed part.

9. The micro-speaker of claim 8, wherein: still include the vibrating diaphragm subassembly, the vibrating diaphragm subassembly is connected the voice coil loudspeaker voice coil with the basin frame respectively.

10. The micro-speaker of claim 1, wherein: the magnetic circuit component is fixed on the basin frame.

Images