CN212910031U

CN212910031U - Large-amplitude micro loudspeaker

Info

Publication number: CN212910031U
Application number: CN202021493278.4U
Authority: CN
Inventors: 张俊利
Original assignee: Shenzhen Sunway Acoustics Technology Co Ltd
Current assignee: Shenzhen Sunway Acoustics Technology Co Ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2021-04-06
Anticipated expiration: 2030-07-24

Abstract

The utility model discloses a miniature speaker of big amplitude, including basin frame, yoke, voice coil loudspeaker voice coil and vice membrane, the basin frame is connected to the yoke, and the voice coil loudspeaker voice coil is located the yoke top, and the bottom and the basin frame of voice coil loudspeaker voice coil are connected to vice membrane, and vice membrane includes the book ring portion, rolls over ring portion and includes first protruding section and the second protruding section that the orientation is opposite, and the opening of second protruding section is towards the yoke. The utility model provides a miniature speaker of big amplitude simple structure, the book ring portion of vice membrane sets up towards opposite first protruding section and the protruding section of second, can effectively increase the deformation volume of book ring portion, under the prerequisite that does not increase the holistic height of speaker, can effectively strengthen the amplitude of speaker, accord with the big amplitude of speaker, miniaturized trend.

Description

Large-amplitude micro loudspeaker

Technical Field

The utility model relates to an acoustics device technical field especially relates to a miniature speaker of big amplitude.

Background

The micro loudspeaker used by the mobile terminal such as a mobile phone and a computer at present usually comprises accessories such as a vibrating diaphragm, a voice coil, a basin frame and an auxiliary diaphragm, and the mobile terminal pursues lightness and thinness and simultaneously pursues large amplitude and super linearity of the micro loudspeaker more, but along with the increasing and increasing of the amplitude, the whole height of the micro loudspeaker is inevitably higher and higher, and the micro loudspeaker is contradictory to the development trend of miniaturization of the existing micro loudspeaker. The specific expression is that the distance from the auxiliary film to the magnetic bowl is more and more limited, the auxiliary film needs to have certain ring folding height and length to ensure large-amplitude output, and the interference between the auxiliary film and the magnetic bowl is easily caused, so that the acoustic performance of the loudspeaker is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: a large-amplitude micro-speaker is provided.

In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a large-amplitude micro loudspeaker, includes basin frame, yoke, voice coil loudspeaker voice coil and vice membrane, the yoke is connected the basin frame, the voice coil loudspeaker voice coil is located the yoke top, vice membrane connect the bottom of voice coil loudspeaker voice coil with the basin frame, vice membrane includes the book ring portion, book ring portion includes the opposite first protruding section of orientation and the protruding section of second, the opening orientation of the protruding section of second the yoke.

Furthermore, the number of the secondary membranes is two, and the two secondary membranes are respectively located on two opposite sides of the voice coil.

Further, the opening width of the first protruding section is larger than that of the second protruding section.

Furthermore, a clearance groove is formed in one side, close to the auxiliary membrane, of the yoke.

Furthermore, the auxiliary membrane further comprises a connecting part connected with the bottom of the voice coil and a fixing part connected with the basin frame, one end of the bent ring part is connected with the fixing part, and the other end of the bent ring part is connected with the connecting part.

Furthermore, the connecting part is connected with the second protruding section, and the fixing part is connected with the first protruding section.

Further, the thickness of the fixing portion is greater than the thickness of the connecting portion and the thickness of the folded ring portion.

Further, the thickness of the folded ring part is larger than that of the connecting part.

Furthermore, an annular washer is arranged on the basin frame, and an empty avoiding position used for avoiding the empty folding ring part is arranged on the annular washer.

Furthermore, the folded ring part is S-shaped.

The beneficial effects of the utility model reside in that: the utility model provides a miniature speaker of big amplitude simple structure, the book ring portion of vice membrane sets up towards opposite first protruding section and the protruding section of second, can effectively increase the deformation volume of book ring portion, under the prerequisite that does not increase the holistic height of speaker, can effectively strengthen the amplitude of speaker, accord with the big amplitude of speaker, miniaturized trend.

Drawings

Fig. 1 is an exploded view of a large-amplitude micro-speaker according to a first embodiment of the present invention;

fig. 2 is a schematic view of a partial structure of a large-amplitude micro speaker according to a first embodiment of the present invention;

fig. 3 is a schematic cross-sectional structure view of a large-amplitude micro-speaker according to a first embodiment of the present invention;

FIG. 4 is an enlarged view taken at A in FIG. 3;

fig. 5 is a simplified structural schematic diagram of a large-amplitude micro-speaker according to a second embodiment of the present invention.

Description of reference numerals:

1. a voice coil; 11. a lead wire; 2. a basin stand; 21. a ring washer; 22. avoiding vacant positions; 3. a secondary membrane; 31. a first convex section; 32. a second convex section; 33. a connecting portion; 34. a fixed part; 4. a yoke; 41. an empty avoiding groove; 42. edge magnetic steel; 43. and (4) central magnetic steel.

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 large-amplitude micro speaker includes a frame 2, a yoke 4, a voice coil 1, and a sub-membrane 3, where the yoke 4 is connected to the frame 2, the voice coil 1 is located above the yoke 4, the sub-membrane 3 is connected to the bottom of the voice coil 1 and the frame 2, the sub-membrane 3 includes a folded ring portion, the folded ring portion includes a first protruding section 31 and a second protruding section 32 facing opposite directions, and an opening of the second protruding section 32 faces the yoke 4.

From the above description, the beneficial effects of the present invention are: the first protruding section 31 and the second protruding section 32 that the orientation is opposite are set up to the book ring portion of secondary membrane 3, can effectively increase the deformation volume of book ring portion, under the prerequisite that does not increase the holistic height of speaker, can effectively strengthen the amplitude of speaker, accord with the big amplitude of speaker, miniaturized trend.

Further, the number of the secondary membranes 3 is two, and the two secondary membranes 3 are respectively located at two opposite sides of the voice coil 1.

It can be known from the above description that the auxiliary membranes 3 are respectively arranged on the two opposite sides of the voice coil 1, so that the supporting effect of the auxiliary membranes 3 on the voice coil 1 can be effectively exerted, and meanwhile, a sufficient space can be provided for the vibration of the auxiliary membranes 3, which is beneficial to the improvement of the acoustic performance.

Further, the opening width of the first convex section 31 is larger than the opening width of the second convex section 32.

As can be seen from the above description, the opening widths of the first protruding section 31 and the second protruding section 32 can be set according to the actual application requirements, and the opening width of the first protruding section 31 is set to be larger than the opening width of the second protruding section 32, so that avoiding of other members inside the speaker is facilitated, and the risk of interference between the secondary membrane 3 and other members is reduced.

Further, a clearance groove 41 is formed in one side of the yoke 4 close to the secondary membrane 3.

As can be seen from the above description, the clearance groove 41 facilitates the clearance of the auxiliary film 3, and can effectively pull the safety distance between the auxiliary film 3 and the yoke 4, thereby reducing the risk of interference between the auxiliary film 3 and the yoke 4.

Further, the auxiliary membrane 3 further comprises a connecting portion 33 connected with the bottom of the voice coil 1 and a fixing portion 34 connected with the frame 2, one end of the bending portion is connected with the fixing portion 34, and the other end of the bending portion is connected with the connecting portion 33.

As can be seen from the above description, the connection portion 33 facilitates the connection between the secondary membrane 3 and the bottom of the voice coil 1, and the fixing portion 34 facilitates the fixing of one end of the secondary membrane 3 on the frame 2, thereby facilitating the secondary membrane 3 to better exert a supporting function and ensuring the stability of the acoustic performance of the speaker.

Further, the connecting portion 33 is connected to the second protruding section 32, and the fixing portion 34 is connected to the first protruding section 31.

As can be seen from the above description, the positions of the first convex section 31 and the second convex section 32 can be set according to the actual application requirement.

Further, the thickness of the fixing portion 34 is greater than the thickness of the connecting portion 33 and the thickness of the hinge portion.

As can be seen from the above description, by setting the thickness of the loop portion to be smaller than the thickness of the fixing portion 34, the amplitude of the vibration of the sub-membrane 3 can be increased to some extent by reducing the thickness of the loop portion while maintaining the thickness of the fixing portion 34 unchanged.

Further, the thickness of the folded ring part is larger than that of the connecting part 33.

As can be seen from the above description, setting the thickness of the connecting portion 33 to be smaller than that of the folded ring portion lengthens the safety distance between the connecting portion 33 and the yoke 4, which is beneficial to improving the acoustic performance of the speaker.

Further, an annular washer 21 is arranged on the basin frame 2, and a clearance position 22 for avoiding the folded ring portion is arranged on the annular washer 21.

As can be seen from the above description, the space avoiding portion 22 provided on the annular washer 21 facilitates avoiding the secondary film 3, and reduces the risk of interference between the secondary film 3 and the annular washer 21.

Furthermore, the folded ring part is S-shaped.

From the above description, the shape of the folded ring portion can be set according to actual reference requirements.

Example one

Referring to fig. 1 to 4, a first embodiment of the present invention is: a large-amplitude micro-speaker comprises a vibrating diaphragm component, a frame 2, a magnetic circuit component, a voice coil 1 and an auxiliary membrane 3, wherein the magnetic circuit component comprises a yoke 4, a central magnetic steel 43 arranged in the middle of the yoke 4 and edge magnetic steels 42 arranged on a group of opposite edges of the yoke 4, the yoke 4 is connected with the frame 2, the voice coil 1 is positioned above the yoke 4, a magnetic circuit gap is formed between the central magnetic steel 43 and the edge magnetic steels 42, the voice coil 1 is positioned in the magnetic circuit gap, the auxiliary membrane 3 is connected with the bottom of the voice coil 1 and the frame 2, the auxiliary membrane 3 comprises a folded ring part, the folded ring part comprises a first raised section 31 and a second raised section 32 which face opposite directions, the opening of the second raised section 32 faces the yoke 4, the shape change of the folded ring part can be effectively increased by arranging the first raised section 31 and the second raised section 32 which face opposite directions on the folded ring part, on the premise of not increasing the overall height of the loudspeaker, the amplitude of the loudspeaker can be effectively enhanced, and the development trend of large amplitude and miniaturization of the loudspeaker is met.

Preferably, referring to fig. 2, the number of the secondary membranes 3 is two, the two secondary membranes 3 are respectively located at two opposite sides of the voice coil 1, that is, the secondary membranes 3 are located above another group of opposite sides of the yoke 4, it is easy to understand that the secondary membranes 3 are respectively located at two opposite sides of the voice coil 1, so that the supporting effect of the secondary membranes 3 on the voice coil 1 can be effectively exerted, and meanwhile, a sufficient space can be provided for the vibration of the secondary membranes 3, which is beneficial to the improvement of the acoustic performance.

Specifically, the secondary membrane 3 further comprises a connecting part 33 connected with the bottom of the voice coil 1 and a fixing part 34 connected with the frame 2, one end of the folded ring part is connected with the fixing part 34, and the other end of the folded ring part is connected with the connecting part 33; an annular washer 21 is arranged on the basin frame 2, and a clearance position 22 for avoiding the folded ring part is arranged on the annular washer 21; as can be easily understood, the connecting portion 33 facilitates the connection between the secondary membrane 3 and the bottom of the voice coil 1, and the fixing portion 34 facilitates the fixation of one end of the secondary membrane 3 on the frame 2, thereby facilitating the secondary membrane 3 to better exert a supporting function and ensuring the stability of the acoustic performance of the speaker; the position avoiding position 22 arranged on the annular washer 21 is convenient for avoiding the auxiliary membrane 3, the risk of interference between the auxiliary membrane 3 and the annular washer 21 is reduced, and the stability of the acoustic performance of the loudspeaker is further improved.

Preferably, referring to fig. 2 and 3, a clearance groove 41 is formed in one side of the yoke 4 close to the secondary membrane 3, and it is easy to understand that the clearance groove 41 is convenient for avoiding the secondary membrane 3, so that the safety distance between the secondary membrane 3 and the yoke 4 can be effectively extended, and the risk of interference between the secondary membrane 3 and the yoke 4 is reduced.

In this embodiment, the opening width of the first protruding section 31 is greater than the opening width of the second protruding section 32, and particularly, the opening widths of the first protruding section 31 and the second protruding section 32 can be set according to practical application requirements, and it is easy to understand that the opening width of the first protruding section 31 is greater than the opening width of the second protruding section 32, so as to avoid other components inside the speaker, and reduce the risk of interference between the secondary membrane 3 and other components, taking this embodiment as an example, a pad for electrically connecting with the voice coil 1 is provided on the tub 2, a lead 11 is provided on the voice coil 1, the voice coil 1 is conducted with the pad through the lead 11, and in order to ensure that the speaker has sufficient amplitude, it is necessary to ensure that the lead 11 has sufficient suspended length, and preferably, the lead 11 is located on a side of the voice coil 1 close to the secondary membrane 3 and extends to the pad, therefore, in order to further ensure that lead wire 11 can not interfere with secondary membrane 3, set up connecting portion 33 with second protruding section 32 is connected, fixed part 34 with first protruding section 31 is connected, that is to say, second protruding section 32 is close to basin frame 2 sets up, first protruding section 31 is close to voice coil 1 sets up, so, the inside space of speaker has rationally planned, has pulled open effectively secondary membrane 3 with safe distance between yoke 4 has promoted the compactness of speaker structure, satisfies miniaturized trend, secondary membrane 3 can form to lead wire 11 and keep away the position, ensures that lead wire 11 has sufficient unsettled length, does benefit to the reinforcing of voice coil 1 vibration amplitude satisfies the trend of the big amplitude of speaker.

Optionally, the folded ring portion is S-shaped (as in this embodiment) or wavy, and the shape of the folded ring portion can be set according to actual citing requirements.

Example two

Referring to fig. 5, the second embodiment of the present invention is a further improvement of the secondary membrane 3 on the basis of the first embodiment, and the difference from the first embodiment is that: the thickness of the fixing portion 34 is greater than the thickness of the connecting portion 33 and the thickness of the folded ring portion, and it is easy to understand that the thickness of the folded ring portion is set to be smaller than the thickness of the fixing portion 34, so that the thickness of the folded ring portion is reduced on the premise that the thickness of the fixing portion 34 is not changed, and the vibration amplitude of the secondary membrane 3 can be increased to a certain extent.

Alternatively, the thickness of the connecting portion 33 may be set to be smaller than that of the folded ring portion, so that the safety distance between the connecting portion 33 and the yoke 4 is increased, which is beneficial to improving the acoustic performance of the speaker.

To sum up, the utility model provides a miniature speaker acoustic performance of big amplitude is good, stability is strong, the inside space of rational planning speaker, has pulled open the safe distance between auxiliary membrane and the yoke effectively, has promoted the compactedness of speaker structure, satisfies the big amplitude of speaker, miniaturized development trend.

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 large amplitude micro loudspeaker, includes basin frame, yoke, voice coil loudspeaker voice coil and vice membrane, the yoke is connected the basin frame, the voice coil loudspeaker voice coil is located the yoke top, vice membrane connect the bottom of voice coil loudspeaker voice coil with the basin frame, its characterized in that: the secondary membrane comprises a folded ring part, the folded ring part comprises a first protruding section and a second protruding section which face to the opposite direction, and the opening of the second protruding section faces to the yoke iron.

2. The micro-speaker as claimed in claim 1, wherein the number of the sub-diaphragms is two, and the two sub-diaphragms are respectively located at opposite sides of the voice coil.

3. The large amplitude microspeaker of claim 1 wherein the first raised section has an opening width greater than the opening width of the second raised section.

4. The micro-speaker as claimed in claim 1, wherein a clearance groove is formed on a side of the yoke adjacent to the sub-diaphragm.

5. The micro large-amplitude speaker as claimed in claim 1, wherein the sub-diaphragm further comprises a connecting portion connected to the bottom of the voice coil and a fixing portion connected to the frame, one end of the bent portion is connected to the fixing portion, and the other end of the bent portion is connected to the connecting portion.

6. The loud-amplitude microspeaker of claim 5 wherein the connecting portion is connected to the second raised section and the anchor portion is connected to the first raised section.

7. The micro-speaker as claimed in claim 5, wherein the thickness of the fixing portion is greater than the thickness of the connecting portion and the thickness of the loop portion.

8. The large amplitude micro-speaker as claimed in claim 7, wherein the thickness of the loop part is greater than the thickness of the connection part.

9. The large-amplitude micro speaker as claimed in claim 1, wherein the frame is provided with an annular washer, and the annular washer is provided with a space avoiding portion for avoiding the folded ring portion.

10. The large amplitude micro-speaker of claim 1, wherein the loop portion is S-shaped.