CN210469732U - Centering support piece and loudspeaker - Google Patents
Centering support piece and loudspeaker Download PDFInfo
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- CN210469732U CN210469732U CN202020173805.7U CN202020173805U CN210469732U CN 210469732 U CN210469732 U CN 210469732U CN 202020173805 U CN202020173805 U CN 202020173805U CN 210469732 U CN210469732 U CN 210469732U
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- cantilever body
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Abstract
The utility model discloses a centering disk and a use speaker of this centering disk, centering disk is the multilayer structure that is formed by a plurality of material layers and glue layer complex, include with the fixed central part of voice coil loudspeaker voice coil and with the fixed edge part of basin frame, the central part with connect its characterized in that through the cantilever between the edge part: the cantilever comprises a cantilever body, a first end part connected with the central part and a second end part connected with the edge part, wherein a reinforcing part is arranged on the cantilever body, and the reinforcing part comprises a vertical reinforcing sheet vertically arranged with the cantilever body. The PI two sides are bent or punched at the cantilever position of the centering branch piece to form the centering branch piece with the H-shaped cantilever section, so that the rigidity of the centering branch piece is increased, the natural vibration frequency is improved, the swinging vibration can be effectively avoided, and the problem of nonlinear distortion is avoided. Through finite element analysis, the utility model discloses a centering branch piece natural frequency of vibrating can be effectively improved than transmission scheme.
Description
Technical Field
The utility model relates to a miniature speaker field, specifically say and relate to a centering support piece and an applied this centering support piece's speaker.
Background
With the development of the high-power ultra-linear micro speaker, the volume requirement of the speaker is smaller and smaller, the power requirement is higher and higher, and the requirement on the sound quality of the speaker is higher and higher. The micro loudspeaker has the advantages that the vibrating diaphragm can generate violent non-piston vibration under the condition of large amplitude, even exceeds the allowable working range, a swing mode occurs, the swing vibration under the large amplitude can be inhibited by adding the centering disk, the centering disk is usually manufactured by a flexible circuit board (namely FPC), the FPC is composed of a plurality of different material layers and glue layers, and the micro loudspeaker is widely applied to various electronic products. The FPC is weak in rigidity and low in natural vibration frequency, and a centering support sheet is manufactured to be used in a loudspeaker, resonance is easily excited in a medium-frequency working range, amplitude is caused to present nonlinear distortion, the tone quality of the loudspeaker is deteriorated, and the sounding quality of the loudspeaker is seriously reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the weak point of above-mentioned conventional art, provide a rigidity height, natural frequency of vibration height, be difficult to the centering piece of distortion and a speaker of using this centering piece under the low frequency work.
The purpose of the utility model is achieved through the following technical measures:
the utility model provides a centering support piece, is the multilayer structure that is formed by a plurality of material layers and glue layer complex, include with the fixed central part of voice coil loudspeaker voice coil and with the fixed edge part of basin frame, the central part with connect its characterized in that through the cantilever between the edge part: the cantilever includes the cantilever body, the first end of being connected with the central part and the second end of being connected with the edge part, be equipped with the reinforcement on the cantilever body, the reinforcement includes the vertical reinforcement piece that sets up with cantilever body Y axle vertical direction. In the present application, the vertical direction of the Y axis refers to a direction perpendicular to the plane of the upper and lower surfaces of the cantilever body.
Preferably, one or more reinforcing members are provided on one or both sides of the cantilever body.
Preferably, one of the stiffeners has one or more vertical stiffeners.
Preferably, the vertical reinforcing piece is arranged on one side edge or two side edges of the vertical direction of the Y axis of the cantilever body.
Preferably, the included angle between the vertical reinforcing sheet and the cantilever body is 60-120 degrees.
As a preferable scheme, the cross-sectional shapes of the vertical reinforcing sheet and the cantilever body are H-shaped or concave.
As a preferred scheme, a longitudinal or transverse reinforcing rib is arranged between every two adjacent vertical reinforcing pieces, and two ends of the reinforcing rib are connected with the vertical reinforcing pieces.
Preferably, the reinforcing member includes a connecting portion bonded to the cantilever body, and the edge of the connecting portion extending out of the cantilever body is connected to the vertical reinforcing piece.
As a preferred scheme, the reinforcing piece comprises a substrate layer forming the cantilever body, and the edge of the substrate layer extends out of the cantilever body part to form a vertical reinforcing sheet through bending or punching. The substrate layer is generally made of PI (polyimide), namely PI is polyimide, and other organic plastics or other materials can be adopted.
The utility model provides a loudspeaker, includes vibration system, magnetic circuit and braced system, vibration system is including the vibrating diaphragm that is connected with the voice coil loudspeaker voice coil, its characterized in that: the voice coil is characterized in that the centering support piece is arranged between the voice coil and the supporting system, the central part of the centering support piece is connected with the voice coil, the edge part of the centering support piece is connected with the basin frame, and the cantilever is electrically connected with the voice coil. The frame is a support member for its supporting role within the loudspeaker or is part of a support system.
The utility model discloses a PI both sides edge both sides with centering piece cantilever position bend or the punching press, assemble into the centering piece that the cantilever cross-section is the H type for the rigidity of centering piece strengthens, and the natural frequency of shaking improves, can effectually avoid swaying the vibration.
Owing to adopted above-mentioned technical scheme, compare with prior art, the utility model has the advantages that: the utility model discloses a centering support piece bends or punching press is handled PI both sides in centering support piece cantilever position, forms the centering support piece that the cantilever cross-section is the H type for the rigidity of centering support piece strengthens, and the natural frequency of shaking improves, can effectually avoid swaying the vibration, avoids the nonlinear distortion problem. Through finite element analysis, the utility model discloses a centering branch piece natural frequency of vibrating can be effectively improved than transmission scheme.
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
Drawings
FIG. 1 is a schematic structural view of a centering chip of embodiment 1.
Fig. 2 is an exploded view of fig. 1.
Fig. 3 is a schematic cross-sectional structure diagram of a cantilever body portion in embodiment 1 of the present invention.
Fig. 4 is a schematic cross-sectional view of a cantilever body in embodiment 2 of a centering support.
Fig. 5 is a schematic cross-sectional view of a cantilever body in embodiment 3 of a centering support.
Fig. 6 is a schematic cross-sectional view of a cantilever body in embodiment 4 of a centering support.
Fig. 7 is a schematic cross-sectional structure of a cantilever body in another embodiment of a centering support piece embodiment 4.
Fig. 8 is a cross-sectional view of a cantilever body in embodiment 5 of a centering leg.
Detailed Description
Example 1: as shown in fig. 1 and 2, a centering support sheet is a multilayer structure formed by combining a plurality of material layers and a glue layer 200, in this embodiment, the material layers include a PI layer 400 and a rolled copper layer 300 in a base material, the two surfaces of the PI layer 400 in the base material are respectively coated with the rolled copper layer 300, and the outer surfaces of the two rolled copper layers 300 are respectively bonded with the base material layer 100 through the glue layer 200. The PI is polyimide, and the PI may be replaced by other organic plastic materials or other materials.
Constitute by above-mentioned multilayer structure with the fixed central part 3 of voice coil loudspeaker voice coil, with the fixed edge portion 1 of basin frame and be connected central part 3 with cantilever 2 between the edge portion 1, cantilever 2 includes cantilever body 22, the first end portion 23 of being connected with central part 3 and the second end portion 21 of being connected with edge portion 1, the substrate layer on the cantilever body 22 constitutes reinforceing piece 6, reinforceing piece 6 includes connecting portion 5 and vertical reinforcement piece 4.
As shown in fig. 2 and 3, the connecting portion 5 is a portion of the substrate layer 100 located on the cantilever body 22, the vertical reinforcing sheet 4 is formed by bending or punching a portion of the connecting portion 5 of the substrate layer 100 extending out of the edge of the cantilever body 22, the vertical reinforcing sheet 4 is vertically arranged with the cantilever body 22, and an included angle between the vertical reinforcing sheet 4 and the plane of the cantilever body 22 is 60 ° to 120 °. In this embodiment, the angle between the vertical reinforcing sheet 4 of the reinforcing member 6 and the cantilever body 22 is 90 °.
As shown in fig. 1 to 3, in this embodiment, the reinforcing members 6 formed by the substrate layer 100 have two pieces, and are respectively disposed on two outer surfaces of the cantilever body 22, the vertical reinforcing pieces 4 of each reinforcing member 6 are two pieces, the two vertical reinforcing pieces 4 are respectively disposed on two sides of the length direction of the cantilever body 22, and the vertical reinforcing pieces 4 and the cantilever body 22 together form an H-shaped structure or an i-shaped structure. The H-shaped centering branch piece in the embodiment has higher structural rigidity, improves the natural vibration frequency, can effectively avoid swinging vibration and avoids the problem of nonlinear distortion.
The mode of natural vibration is 3942.2 when adopting traditional scheme for the centring disk in this embodiment, uses the utility model discloses a mode of natural vibration improves for 4917.9 behind the H type centring disk structure, has improved 24.75%.
Example 2: as shown in fig. 4, in the present embodiment, the multilayer structure forming the cantilever body 22 includes a rolled copper layer 300, a base material layer 100 is adhered to each of the upper surface and the lower surface of the rolled copper layer 300 forming the cantilever body 22 through a glue layer 200, a portion of the base material layer 100 located on the cantilever body 22 forms the connection portion 5 of the reinforcing member 6, and a portion of the base material layer 100 extending from the connection portion 5 to the edge of the cantilever body 22 is bent or punched to form the vertical reinforcing sheet 4. The cross section shapes of the vertical strengthening sheet 4 and the cantilever body are H-shaped.
The rest of this example is the same as example 1.
Example 3: as shown in fig. 5, in the present embodiment, the multilayer structure forming the cantilever body 22 includes a rolled copper layer 300, a base material layer 100 is adhered to an upper surface and a lower surface of the rolled copper layer 300 forming the cantilever body 22 through glue layers 200, a portion of the base material layer 100 located on the cantilever body 22 forms the connecting portion 5 of the reinforcing member 6, the base material layer 100 is bent or punched from a portion extending out of an edge of the cantilever body 22 to form a vertical reinforcing sheet 4, and the vertical reinforcing sheet 4 extends in two directions toward a Y-axis vertical direction of the cantilever body 22 and exceeds upper and lower surfaces of the cantilever body 22. The cross section shapes of the vertical strengthening sheet 4 and the cantilever body are H-shaped.
The rest of this example is the same as example 1.
Example 4: as shown in fig. 6, in the present embodiment, the multilayer structure constituting the cantilever body 22 includes a rolled copper layer 300, a base material layer 100 is adhered to each of the upper surface and the lower surface of the rolled copper layer 300 constituting the cantilever body 22 through a glue layer 200, a connecting portion 5 of the reinforcing member 6 is adhered to the base material layer 100 on both surfaces of the cantilever body 22, the reinforcing member 6 further includes a vertical reinforcing sheet 4 integrally provided with an edge portion of the connecting portion 5 extending out of the cantilever body 22, and the cross section of the reinforcing member 6 is in a shape of "concave". In the case where one reinforcing member 6 is bonded to each of the upper and lower surfaces of the arm body 22, the two reinforcing members 6 and the cross section of the arm body 22 together form an H-shape.
As shown in fig. 7, the reinforcing member 6 may be adhered to a single side surface of the cantilever body 22, so that the cross section of the reinforcing member 6 and the cantilever body 22 may be concave.
In this embodiment, the reinforcement member 6 is a separately arranged component, and after the cantilever of the spider is formed, the reinforcement member 6 can be adhered to the surface of the cantilever body 22 as required, and one or more reinforcement members 6 can be adhered to the surface of one side of the cantilever body 22, so that the requirement on the rigidity and the resonance frequency of the cantilever can be met better.
The rest of this example is the same as example 1.
Example 5: as shown in fig. 8, in this embodiment, there are 3 vertical reinforcing pieces 4 on one side of the connecting portion 5 on one side of the cantilever body 22, there are 6 vertical reinforcing pieces on each connecting portion 5, and there are two connecting portions 5 and 12 vertical reinforcing pieces 4 on each cantilever body 22. The plurality of vertical reinforcing pieces 4 improve the resonance frequency of the cantilever body 22 while enabling the rigidity of the cantilever body 22 to be enhanced, so that the amplitude of the cantilever body 22 at the maximum resonance frequency is remarkably reduced, and the sound production loudness and sound quality of the loudspeaker are improved.
The rest of this example is the same as example 1.
Example 6: the utility model provides a loudspeaker, includes vibration system, magnetic circuit and braced system, vibration system is including the vibrating diaphragm that is connected with the voice coil loudspeaker voice coil, be equipped with between voice coil loudspeaker voice coil and the braced system centering branch piece, central part in the centering branch piece is connected with the voice coil loudspeaker voice coil, the edge portion and the basin frame of centering branch piece are connected, and the basin frame is the supporting component in the loudspeaker, also can adopt other parts that mainly or supplementary played the supporting role, perhaps a part of the support system in the loudspeaker, the cantilever is connected with the voice coil loudspeaker voice coil electricity.
Claims (10)
1. The utility model provides a centering support piece, is the multilayer structure that is formed by a plurality of material layers and glue layer complex, include with the fixed central part of voice coil loudspeaker voice coil and with the fixed edge part of basin frame, the central part with connect its characterized in that through the cantilever between the edge part: the cantilever includes the cantilever body, the first end of being connected with the central part and the second end of being connected with the edge part, be equipped with the reinforcement on the cantilever body, the reinforcement includes the vertical reinforcement piece that sets up with cantilever body Y axle vertical direction.
2. A centring disk as claimed in claim 1, wherein:
one or more reinforcing pieces are arranged on one surface or two surfaces of the cantilever body.
3. A centring disk as claimed in claim 1, wherein:
one piece of the stiffener has one or more vertical stiffener pieces.
4. A centring disk as claimed in claim 1, wherein:
the vertical reinforcing sheet is arranged on one side edge or two side edges of the Y-axis vertical direction of the cantilever body.
5. A centring disk as claimed in claim 1, wherein:
the included angle between the vertical reinforcing sheet and the cantilever body is 60-120 degrees.
6. A centring disk as claimed in claim 1, wherein:
the cross section shapes of the vertical reinforcing sheet and the cantilever body are H-shaped or concave.
7. A centring disk according to any one of claims 1 to 6 wherein:
and longitudinal or transverse reinforcing ribs are arranged between the two adjacent vertical reinforcing sheets, and two ends of each reinforcing rib are connected with the vertical reinforcing sheets.
8. A centring disk as claimed in claim 7, wherein:
the reinforcing piece comprises a base material layer forming the cantilever body, and the edge of the base material layer extends out of the cantilever body and forms a vertical reinforcing piece through bending or stamping.
9. A centring disk as claimed in claim 7, wherein:
the reinforcing piece comprises a connecting part bonded with the cantilever body, and the edge of the connecting part extending out of the cantilever body is connected with the vertical reinforcing sheet.
10. The utility model provides a loudspeaker, includes vibration system, magnetic circuit and braced system, vibration system is including the vibrating diaphragm that is connected with the voice coil loudspeaker voice coil, its characterized in that: the center support piece as claimed in any one of claims 1 to 9 is arranged between the voice coil and the support system, the center portion of the center support piece is connected with the voice coil, the edge portion of the center support piece is connected with the basin frame, and the cantilever is electrically connected with the voice coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020173805.7U CN210469732U (en) | 2020-02-17 | 2020-02-17 | Centering support piece and loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020173805.7U CN210469732U (en) | 2020-02-17 | 2020-02-17 | Centering support piece and loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210469732U true CN210469732U (en) | 2020-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020173805.7U Active CN210469732U (en) | 2020-02-17 | 2020-02-17 | Centering support piece and loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210469732U (en) |
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2020
- 2020-02-17 CN CN202020173805.7U patent/CN210469732U/en active Active
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