TWI837601B - Speaker vibrating piece with protruding edges and manufacturing method thereof - Google Patents

Abstract

A speaker vibration plate with a raised edge includes a wave portion, an extension portion, a bump, a groove, and a rubber layer. The extension portion is arranged on the outer side of the wave portion. The bump is convexly arranged on the top surface of the extension portion. The groove is concavely arranged on the bottom surface of the extension portion and is formed below the bump. The rubber layer is arranged on the bottom surface of the extension portion, surrounding along the circumferential direction, and only passes through the two sides of the groove and the opening of the groove, and is not arranged inside the groove. Thus, the present invention can prevent excess rubber layer from overflowing to the outer side of the outer frame by setting the bump and the groove.

Description

Speaker vibrating plate with raised edge and its manufacturing method

The present invention relates to a speaker vibration plate and a manufacturing method thereof, in particular to a speaker vibration plate with a protruding edge and a manufacturing method thereof.

A general dynamic speaker produces sound by using the principle that the reaction force of a fixed magnetic field causes another magnetic field to move in the opposite direction (i.e., opposites attract and likes repel). Specifically, the power alternating current generated by the power amplifier is transmitted to the voice coil via wires to change the polarity of the magnetic field, causing the voice coil to produce a reaction force relative to the fixed magnetic region generated by the magnetic feedback device. The positive pulse causes the diaphragm to move outward relative to the magnet, and the negative pulse causes the diaphragm to move inward. When the voice coil pushes the diaphragm to reciprocate, the diaphragm pushes the air, and the air pressure changes to form sound waves. The extension of the elastic wave is fixed to the outer frame by a glue layer and is responsible for maintaining the correct position of the voice coil in the gap of the magnetic core, ensuring that the voice coil reciprocates along the axial direction when subjected to force. The suspension is set between the diaphragm and the outer frame to support the diaphragm.

However, when the damper is fixed to the outer frame, the rubber layer is easily squeezed and overflows to the outside of the outer frame. In particular, dampers made of materials with poor permeability are easily squeezed and overflow to the outside of the outer frame because the rubber layer cannot penetrate into the inside of the damper.

Furthermore, the amount of glue applied and the setting position of the glue layer are fixed and cannot be adjusted randomly. If the viscosity of the glue layer is low, the normal amount of glue applied is just enough to fix the extension of the elastic wave on the outer frame. If the viscosity of the glue layer is high, the normal amount of glue applied is too much and wastes money.

The main purpose of the present invention is to provide a speaker vibration plate with a protruding edge and a manufacturing method thereof, which can prevent the excess glue layer from overflowing to the outer side of the outer frame by setting the protrusions and grooves.

Another purpose of the present invention is to provide a speaker vibration plate with a protruding edge and a manufacturing method thereof, which can randomly adjust the amount of glue placed inside or on both sides of the groove according to needs by setting the bumps and grooves.

Another object of the present invention is to provide a speaker vibration plate with a protruding edge and a manufacturing method thereof, which can randomly adjust the amount of the rubber layer extruded out of the groove according to demand by setting the protrusions and grooves.

Another object of the present invention is to provide a speaker vibration plate with a protruding edge and a manufacturing method thereof, which can provide a functional protrusion without a wave portion.

In order to achieve the above-mentioned purpose, the present invention provides a speaker vibration plate with a protruding edge, including a wave portion, an extension portion, a convex block and a groove. The extension portion is arranged on the outer side of the wave portion. The convex block is convexly arranged on the top surface of the extension portion. The groove is concavely arranged on the bottom surface of the extension portion and is formed below the convex block.

In some embodiments, the wave portion includes a plurality of waves, each wave having a crest and a trough, the crest is convexly disposed on the top surface of the wave portion, the trough is convexly disposed on the bottom surface of the wave portion, and the height of the protrusion is less than the height of the crest.

In some embodiments, the speaker vibration plate with raised edges includes a plurality of protrusions and a plurality of grooves, wherein the protrusions are protruding on the top surface of the extension portion, surrounding along a circumferential direction and arranged at intervals, and the grooves are recessed on the bottom surface of the extension portion and are formed below the protrusions respectively.

In some embodiments, the protrusions and the grooves are arranged around a circumferential direction to form a ring shape.

In some embodiments, the speaker vibration plate with a protruding edge further includes a rubber layer, which is disposed on the bottom surface of the extension portion, surrounds along a circumferential direction, and passes through the two sides of the groove and the opening of the groove.

In some embodiments, the speaker vibration plate with a protruding edge further includes a rubber layer, and the rubber layer is disposed inside the groove.

In some embodiments, the speaker vibration plate with a protruding edge further includes a rubber layer, which is disposed on the bottom surface of the extension portion, surrounds along a circumferential direction, and passes through both sides of the groove.

In order to achieve the above-mentioned purpose, the present invention provides a method for manufacturing a speaker vibration plate with a protruding edge, comprising the following steps: impregnating a substrate in a resin solution; drying the substrate; hot-pressing a wave portion and an extension portion on a pre-formed area of the substrate, wherein the extension portion is arranged on the outer side of the wave portion, and hot-pressing a convex block on the top surface of the extension portion and a concave block on the bottom surface of the extension portion, wherein the concave block is formed below the convex block; and separating the pre-formed area from the substrate to obtain a speaker vibration plate with a protruding edge.

The effect of the present invention is that the present invention can prevent the excess glue layer from overflowing to the outer side of the outer frame by setting the bumps and grooves.

Furthermore, the present invention can randomly adjust the amount of glue placed inside or on both sides of the groove according to demand by setting the bumps and grooves.

In addition, the present invention can randomly adjust the amount of the rubber layer extruded out of the groove according to demand by setting the bumps and grooves.

Furthermore, the present invention can provide a bump that does not have the function of a wave portion.

1,1A,1B: speaker vibration plate

2: Outer frame

10: Wave part

11: Waves

111: Peak

112: Trough

20: Extension

30,30A,30B: Bump

40,40A,40B: Groove

50: Adhesive layer

60: Base material

70: Resin tank

71: Resin solution

80: Drying device

81: Place on baking sheet

82: Lower baking sheet

90: Hot pressing molding device

91: Molding mold

911: Upper mold

912: Lower mold

100: Cutting device

101: Upper cutting tool

102: Lower cutting tool

H1,H2:Height

S100~S400: Steps

Figure 1 is a three-dimensional diagram of the first embodiment of the speaker vibration plate of the present invention.

Figure 2 is a bottom view of the first embodiment of the speaker vibration plate of the present invention.

Figure 3 is a cross-sectional view taken along line A-A of Figure 2.

Figure 4A shows a schematic diagram of the first coating method of the adhesive layer.

Figure 4B is a cross-sectional view taken along line B-B of Figure 4A.

Figure 4C is a schematic diagram of the first method of combining the speaker vibration plate and the outer frame of the present invention.

Figure 5A shows a schematic diagram of the second coating method of the adhesive layer.

Figure 5B is a cross-sectional view taken along line C-C of Figure 5A.

Figures 5C and 5D are schematic diagrams of the second method of combining the speaker vibration plate and the outer frame of the present invention.

Figure 6A shows a schematic diagram of the third coating method of the adhesive layer.

Figure 6B is a cross-sectional view taken along line D-D of Figure 6A.

Figure 6C is a schematic diagram of the third method of combining the speaker vibration plate and the outer frame of the present invention.

Figure 7 is a three-dimensional diagram of the second embodiment of the speaker vibration plate of the present invention.

FIG8 is a bottom view of the second embodiment of the speaker vibration plate of the present invention.

Figure 9 is a cross-sectional view taken along line E-E of Figure 8.

Figure 10 is a three-dimensional diagram of the third embodiment of the speaker vibration plate of the present invention.

FIG11 is a bottom view of the third embodiment of the speaker vibration plate of the present invention.

Figure 12 is a cross-sectional view taken along line F-F of Figure 11.

Figure 13 is a flow chart of the manufacturing method of the speaker vibration plate of the present invention.

Figure 14 is a schematic diagram of the manufacturing method of the speaker vibration plate of the present invention.

The following is a more detailed description of the implementation of the present invention with the help of diagrams and component symbols, so that those who are familiar with the technology can implement it accordingly after reading this manual.

FIG1 is a perspective view of a first embodiment of a speaker vibration plate 1 of the present invention, FIG2 is a bottom view of the first embodiment of the speaker vibration plate 1 of the present invention, and FIG3 is a cross-sectional view of line A-A of FIG2 . As shown in FIG1 to FIG3 , the present invention provides a speaker vibration plate 1 with a protruding edge, comprising a wave portion 10, an extension portion 20, a plurality of protrusions 30, and a plurality of grooves 40. The wave portion 10 includes a plurality of waves 11, each wave 11 having a crest 111 and a trough 112, the crest 111 protruding from the top surface of the wave portion 10, and the trough 112 protruding from the bottom surface of the wave portion 10. The extension portion 20 is disposed on the outer side of the wave portion 10. The protrusions 30 are protruding from the top surface of the extension portion 20, surrounding along a circumferential direction, and disposed at intervals. The grooves 40 are recessed in the bottom surface of the extension portion 20 and are formed below the protrusions 30 respectively.

The following will further illustrate the three ways of combining the speaker vibration plate 1 and the outer frame 2 of the present invention and their effects with the help of diagrams.

FIG4A is a schematic diagram showing a first coating method of the adhesive layer 50, FIG4B is a cross-sectional view of line B-B of FIG4A, and FIG4C is a schematic diagram showing a first bonding method of the speaker vibration plate 1 of the present invention and the outer frame 2. As shown in FIG4A and FIG4B, the speaker vibration plate 1 of the present invention further includes an adhesive layer 50, which is disposed on the bottom surface of the extension portion 20, surrounds along a circumferential direction, and only passes through the two sides of the grooves 40 and the openings of the grooves 40, and is not disposed inside the grooves 40. As shown in FIG. 4C , when a pressing device (not shown) presses the extension 20 onto an outer frame 2 , the extension 20 can be bonded to the outer frame 2 via the adhesive layer 50 , and the excess adhesive layer 50 will be squeezed into the interior of the grooves 40 to prevent the excess adhesive layer 50 from overflowing to the outer side of the outer frame 2 .

FIG5A is a schematic diagram showing a second coating method of the adhesive layer 50, FIG5B is a cross-sectional view of the line C-C of FIG5A, and FIG5C and FIG5D are schematic diagrams showing a second bonding method of the speaker vibration plate 1 and the outer frame 2 of the present invention. As shown in FIG5A and FIG5B, the speaker vibration plate 1 of the present invention further includes a plurality of adhesive layers 50, which are only disposed inside the grooves 40, not surrounding along a circumferential direction, and not passing through the two sides of the grooves 40 and the openings of the grooves 40. As shown in FIG5C , when a pressing device (not shown) presses the extension 20 onto an outer frame 2, the protrusions 30 are pressed down and deformed, so that the space of the grooves 40 becomes smaller, and the adhesive layers 50 are squeezed outward from the grooves 40. As shown in FIG5D , after the pressing device is separated from the extension 20, the protrusions 30 return to their original shapes, and the adhesive layers 50 are respectively located on both sides of the grooves 40 and at the openings of the grooves 40, so that the extension 20 can be combined with the outer frame 2 through the adhesive layers 50.

The second coating method of the adhesive layer 50 includes at least the following two possible applications.

First, the viscosity of the adhesive layer 50 of different materials is not the same. In order to provide the speaker vibration plate 1 and the outer frame 2 with the same bonding strength, the user can appropriately adjust the amount of adhesive layer 50 disposed inside the grooves 40 according to the viscosity. For example, assuming that the viscosity of the adhesive layer 50 of material M1 is about twice the viscosity of the adhesive layer 50 of material M2, the amount of adhesive layer 50 of material M1 is about 1/2 of the amount of adhesive layer 50 of material M2.

Secondly, speaker vibrators 1 made of different materials have different bonding strengths with the outer frame 2. The material of the rubber layer 50 is the same and the amount of glue applied to the rubber layer 50 in the grooves 40 is the same. The user can adjust the pressing force of the pressing device according to the set bonding strength to control the amount of extrusion of the rubber layer 50 from the grooves 40. For example, assuming that the bonding strength between the speaker vibration plate 1 made of material M3 and the outer frame 2 is twice that of the speaker vibration plate 1 made of material M4 and the outer frame 2, the pressing force provided by the pressing device to the speaker vibration plate 1 made of material M3 is twice that of the pressing force provided by the pressing device to the speaker vibration plate 1 made of material M4, and the amount of the adhesive layers 50 of the speaker vibration plate 1 made of material M3 extruded from the grooves 40 is twice that of the adhesive layers 50 of the speaker vibration plate 1 made of material M4 extruded from the grooves 40.

FIG6A is a schematic diagram showing a third coating method of the adhesive layer 50, FIG6B is a cross-sectional view of line D-D of FIG6A, and FIG6C is a schematic diagram showing a third bonding method of the speaker vibration plate 1 and the outer frame 2 of the present invention. As shown in FIG6A and FIG6B, the speaker vibration plate 1 of the present invention further includes an adhesive layer 50, which is disposed on the bottom surface of the extension portion 20, surrounds along a circumferential direction, and only passes through the two sides of the grooves 40, does not pass through the openings of the grooves 40, and is not disposed inside the grooves 40. As shown in FIG6C, when a pressing device (not shown) presses the extension portion 20 onto an outer frame 2, the extension portion 20 can be bonded to the outer frame 2 through the adhesive layer 50. This implementation is suitable for using a high-viscosity adhesive layer 50. It only needs to set a small amount of high-viscosity adhesive layer 50 on the bottom surface of the extension part 20, and the extension part 20 can be immediately combined with the outer frame 2 through the high-viscosity adhesive layer 50, thereby reducing the amount of adhesive layer 50 with high viscosity and reducing the cost of using adhesive.

As shown in FIGS. 1 to 3 , in the first embodiment, the height H1 of each protrusion 30 is smaller than the height H2 of the crest 111. Because the height H1 of the protrusions 30 is smaller and the crest 111 and the trough 112 are not formed, the protrusions 30 do not have the function of the wave portion 10.

As shown in Figs. 1 to 3, in the first embodiment, the shape of the contour of each protrusion 30 is elliptical, the shape of the cross-section of each protrusion 30 is arc-shaped, and the shape of each groove 40 is elliptical. Fig. 7 is a three-dimensional view of the second embodiment of the speaker vibration plate 1A of the present invention, Fig. 8 is a bottom view of the second embodiment of the speaker vibration plate 1A of the present invention, and Fig. 9 is a cross-sectional view of the line E-E of Fig. 8; As shown in Figs. 7 to 9, the difference between the second embodiment and the first embodiment is that the shape of the contour of each protrusion 30A is rectangular, the shape of the cross-section of each protrusion 30A is rectangular, and the shape of each groove 40A is rectangular. In some embodiments, the shape of the contour of each bump can be circular, polygonal, conical or other shapes, the shape of the cross section of each bump can be polygonal or other shapes, and the shape of each groove can be circular, polygonal, conical or other shapes, without any limitation.

FIG10 is a perspective view of the third embodiment of the speaker vibration plate 1B of the present invention, FIG11 is a bottom view of the third embodiment of the speaker vibration plate 1B of the present invention, and FIG12 is a cross-sectional view of the line F-F of FIG11. As shown in FIG10 to FIG12, the difference between the third embodiment and the first embodiment is that the speaker vibration plate 1B of the present invention includes a convex block 30B and a concave groove 40B, and the convex block 30B and the concave groove 40B are both arranged around a circumferential direction and are annular, and the cross-section of the convex block 30B is an arc. In some embodiments, the cross-section of the convex block 30B can also be a polygon or other shapes, without any limitation.

FIG13 is a flow chart of the manufacturing method of the speaker vibration plate of the present invention, and FIG14 is a schematic diagram of the manufacturing method of the speaker vibration plate of the present invention. As shown in FIG13 and FIG14, the present invention provides a manufacturing method of a speaker vibration plate 1, 1A, 1B with a protruding edge, comprising the following steps:

In step S100, a substrate 60 is immersed in a resin solution 71 in a resin tank 70.

Step S200, a drying device 80 includes an upper baking plate 81 and a lower baking plate 82. The temperature of the upper baking plate 81 and the lower baking plate 82 is used to remove the moisture and volatile substances in the resin on the substrate 60, thereby drying the substrate 60.

In step S300 , a hot pressing molding device 90 includes a molding die 91 and a heating device (not shown), and the molding die 91 includes an upper die 911 and a lower die 912 . When the upper mold 911 and the lower mold 912 are closed and pressurized on the substrate 60, the heating device is energized to increase the temperature of the upper mold 911 and the lower mold 912, so that the hot press molding device 90 can hot press mold a wave portion 10 and an extension portion 20 on a pre-molding area 61 of the substrate 60, and the extension portion 20 is arranged on the outer side of the wave portion 10. At the same time, the top surface of the extension portion 20 is hot press molded into a plurality of protrusions 30, 30A or a protrusion 30B, and the bottom surface of the extension portion 20 is hot press molded into a plurality of grooves 40, 40A or a groove 40B, and the grooves 40, 40A, 40B are formed below the protrusions 30, 30A, 30B. Since the number and shape of the protrusions 30, 30A, 30B and the grooves 40, 40A, 40B can be varied, the molding die 91 will also be adjusted to correspond to the number and shape of the protrusions 30, 30A, 30B and the grooves 40, 40A, 40B.

In step S400, a cutting device 100 includes an upper cutter 101 and a lower cutter 102. The upper cutter 101 and the lower cutter 102 separate the preformed area 61 from the substrate 60 to obtain a speaker vibration plate 1, 1A, 1B with a protruding edge.

In step S500, a rubber layer 50 is disposed on the bottom surface of the extension portion 20, surrounding the bottom surface along a circumferential direction and passing only through the two sides of the grooves 40 and the openings of the grooves 40, but not disposed inside the grooves 40; or, in step S510, a plurality of rubber layers 50 are disposed only inside the grooves 40, but not along a circumferential direction. Direction surrounds the grooves 40, and does not pass through the two sides of the grooves 40 and the openings of the grooves 40; or, step S520, a glue layer 50 is set on the bottom surface of the extension part 20, surrounds along a circumferential direction, and only passes through the two sides of the grooves 40, does not pass through the openings of the grooves 40, and is not set inside the grooves 40.

The above is only used to explain the preferred embodiment of the present invention, and is not intended to limit the present invention in any form. Therefore, any modification or change of the present invention made under the same spirit of the invention should still be included in the scope of protection intended by the present invention.

1: Speaker vibration plate

10: Wave part

11: Waves

111: Peak

112: Trough

20: Extension

40: Groove

50: Adhesive layer

Claims (5)

A speaker vibration plate with a raised edge includes: a wave portion; an extension portion disposed on the outer side of the wave portion; a convex block convexly disposed on the top surface of the extension portion; a groove concavely disposed on the bottom surface of the extension portion and formed below the convex block; and a rubber layer disposed on the bottom surface of the extension portion, surrounding along a circumferential direction, and only passing through the two sides of the groove and the opening of the groove, and not disposed inside the groove. A speaker vibration plate with a raised edge as described in claim 1, wherein the wave portion includes a plurality of waves, each of the waves has a crest and a trough, the crest is convexly disposed on the top surface of the wave portion, the trough is convexly disposed on the bottom surface of the wave portion, and the height of the protrusion is less than the height of the crest. The speaker vibration plate with raised edges as described in claim 1 or 2 comprises a plurality of protrusions and a plurality of grooves, wherein the protrusions are protruding from the top surface of the extension portion, surrounding along a circumferential direction and arranged at intervals, and the grooves are recessed from the bottom surface of the extension portion and are formed respectively below the protrusions. A speaker vibration plate with a raised edge as described in claim 1 or 2, wherein the protrusion and the groove are both arranged around a circumferential direction to form a circular ring shape. A method for manufacturing a speaker vibration plate with a raised edge includes the following steps: a substrate is impregnated with a resin solution; the substrate is dried; a wave portion and an extension portion are formed by hot pressing on a pre-formed area of the substrate, the extension portion is arranged on the outer side of the wave portion, a bump is formed by hot pressing on the top surface of the extension portion and a groove is formed by hot pressing on the bottom surface of the extension portion, the groove is formed below the bump; the pre-formed area is separated from the substrate to obtain a speaker vibration plate with a raised edge; and a rubber layer is arranged on the bottom surface of the extension portion, surrounding along a circumferential direction, and only passes through the two sides of the groove and the opening of the groove, and is not arranged inside the groove.

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