TWI461071B - The Manufacturing Method of Composite Material Cantilever Type Chip Shock Absorber - Google Patents

Description

Method for manufacturing composite cantilever type sheet shock absorber

The invention relates to a manufacturing method of a composite cantilever type plate shock absorber applied to a flat speaker, which is a manufacturing method by plastic injection molding, which utilizes a right mold and a right mold forming structure to make a voice coil and a cantilever beam. It is wrapped between the sheet body and the column of the fixed seat to form an integrally formed composite cantilever type sheet shock absorber.

Conventional flat-type loudspeakers, such as the "flat-panel speaker construction" of the Republic of China Patent Publication No. 200733034, which adopts a non-integrated shock absorber design, resulting in poor fatigue resistance of the suspension beam structure and lack of structural simplification and rapid processing in the industry. There is a lack of specificity in the application.

The biggest disadvantages of the above-mentioned conventional flat speakers are:

1. The non-integrated structure of the shock cantilever is obviously insufficient in strength and fatigue resistance, which greatly reduces the service life and quality reliability.

2. The non-integrated structure of the shock cantilever will increase the number and complexity of the structural components, and increase the man-hour and production cost in assembly.

3. Can not withstand the driving force of the large speaker reciprocating vibration, affecting the effective output power of the speaker and the quality of the sound output.

The above mentioned planar loudspeakers for use, although able to achieve the general requirements and results of general strength and fatigue resistance required to withstand the shock output, but in practical applications, output efficiency, fatigue life and industrial application specificity On the above, there are many shortcomings and deficiencies, no The law exerts more specific industrial applicability.

In addition, the inventor earlier applied for the Republic of China New Patent Bulletin No. M329304 "Structure of a sheet-shaped shock absorber", which has been improved for the lack of the above-mentioned conventional flat-type speaker, and its effect is quite remarkable, but the inventor In the spirit of excellence, we have developed a method of making a sheet-shaped shock absorber by using a cantilever made of a composite material.

The invention solves the defects that the conventional planar speaker has insufficient output performance, fatigue life and industrial application specificity, and is limited in practical technology, and on the other hand, achieves structural fatigue strength of lifting and strengthening shock output. For the primary purpose, on the other hand, to improve the functionality, applicability and application range of simplified design, ease of processing and assembly, in order to achieve the basic strength and fatigue resistance basic functions that can withstand the shock output, and to The actual development and requirements of the application of the flat speaker industry.

Therefore, regardless of the subjective and objective conditions, the manufacturing technology and method of the composite cantilever type diaphragm shock absorber for flat speakers have no relevant structural technology application in domestic and foreign patents, and have high irresistible high shock fatigue in the market. The advantages of strength technology, it is very suitable for the equipment market of advanced flat speakers, and it is bound to bring great opportunities in the market related to the production and manufacturing of flat speaker equipment.

In order to achieve the above purposes and functions, the specific technical means and solutions adopted include: A manufacturing method of a composite material cantilevered sheet-shaped shock absorber, comprising: (a) pre-molding left and right molds for injection molding; (b) fabricating a flat voice coil; (c) fabricating a suspension beam of composite material; (d) placing the cantilever beam and voice coil in the corresponding position in the left or right mold cavity; (e) combining the right mold with the left mold; (f) performing plastic injection molding to form an integrally formed composite cantilever sheet The semi-finished product of the shock absorber; (g) the two magnets are combined on both sides of the semi-finished product of the composite cantilevered plate-shaped shock absorber and fixed.

The above-mentioned planar voice coil is produced by a winding method.

The cantilever of the above composite material is produced by a hot press forming method.

The above-mentioned mold holes of the left and right molds are formed in addition to the composite cantilevered sheet-shaped shock absorber.

The composite cantilever-type sheet-shaped shock absorber formed by the left and right molds includes a sheet body, an upper connecting portion, a lower connecting portion, a top plate, a fixing seat, a column and a magnet groove.

After performing the plastic injection molding described above, the voice coil is formed to be wrapped in the sheet body, and the cantilever beams are respectively connected between the sheet body and the column of the fixed seat.

The cantilever beam spanning the upper connecting portion and the lower connecting portion is any one of a straight type or a double-twisted type, a double-twisted type, a double upper concave curved type, a double concave curved type or a double continuous wave shape.

The top plate described above is any one of a rectangular shape, an elliptical shape, a circular shape, a trapezoidal shape, a rhombic shape, a polygonal shape, and an irregular shape.

The specific features and effects of the present invention are as follows:

1. The manufacturing method of the present invention is easy and rapid, and is particularly suitable for mass production. Therefore, the manufacturing cost can be greatly reduced.

2. The present invention can use an injection molding material which is more resistant to heat, corrosion and fatigue, and serves as a shock absorber structure for the non-composite suspension beam portion to increase its mechanical strength.

3. The invention utilizes the characteristics of strong strength, heat resistance and corrosion resistance of the composite material, and the composite suspension beam is made into a long thin section with a large aspect ratio, so that the vertical direction is easy to vibrate, and the heat resistance and corrosion resistance which are not easy to swing before and after. structure.

4. After the composite cantilever beam is formed on the sheet-shaped shock absorber, the composite suspension beam is surrounded and fixed, so that the composite suspension beam is tightly fixed on the sheet-shaped shock absorber, and will not fall off arbitrarily after long-term vibration, and may be increased. Its fatigue life strength.

Please refer to the first figure, which is a flow chart of a manufacturing method of a composite cantilever type plate shock absorber according to the present invention, and the second figure is a left mold (1) and a right mold (2) provided in accordance with the present invention, and Referring to the third to ninth drawings together, the manufacturing method of the present invention includes:

(a) As shown in the second figure, the left mold (1) and the right mold (2) are injection molded, and the left mold (1) and the right mold (2) are provided with mold holes (11) (21). The cavity (11) (21) is symmetrical (may be asymmetrical). In short, the cavity (11) (21) of the left mold (1) and the right mold (2) is based on the composite cantilevered sheet. Formed outside the shock absorber, and the composite cantilevered sheet shock absorber includes: a sheet body (3), an upper connecting portion (31), Lower connecting part (32), top plate (33), fixing base (4), column (41) and magnet groove (42) (please refer to the sixth figure).

(b) As shown in the third figure, a flat voice coil (5) is produced, which is a closed-loop body similar to a playground shape, and the voice coil (5) is produced by a winding method.

(c) As shown in the third figure, a composite cantilever beam (6) is produced, which is produced by hot press forming, and is connected to the upper connecting portion (31) and the lower connecting portion (32). The cantilever beam (6) is of any one of a straight type or a double ㄇ type, a double ㄩ type, a double upper concave arc type, a double concave concave arc type or a double continuous wavy shape.

(d) As shown in the fourth figure, place the cantilever beam (6) and the voice coil (5) in the corresponding position in the cavity (11) of the left mold (1) or the cavity (21) of the right mold (2). .

(e) As shown in the fifth figure, the right mold (2) is combined with the left mold (1).

(f) As shown in the sixth figure, the plastic injection molding is performed to form a semi-finished product of the integrally formed composite cantilevered sheet-shaped shock absorber, wherein the voice coil (5) is wrapped in the sheet body (3), and the cantilever beam (6) ) is also wrapped and passed through the upper connecting portion (31) and the lower connecting portion (32), respectively, and then connected between the pillars (41) of the fixing seat (4).

(g) As shown in the seventh and eighth figures, the two magnets (7) are combined and fixed on the magnet slots (42) on both sides of the semi-finished product of the composite cantilevered plate-shaped shock absorber, wherein one magnet (7) ) S pole up, N pole down; The other magnet (7) is reversed, that is, the N pole is facing upward, and the S pole is facing downward, and after fixing, the finished product of the integrally formed composite cantilevered sheet-shaped shock absorber is completed.

The top plate (33) may be any of a rectangular shape, an elliptical shape, a circular shape, a trapezoidal shape, a rhombic shape, a polygonal shape, and an irregular shape.

In summary, the present invention is directed to the application technology of a composite cantilever type diaphragm shock absorber manufacturing method, and particularly relates to a molding structure of a left mold (1) and a right mold (2) by a plastic injection molding method. The voice coil (5) and the suspension beam (6) are wrapped around the connecting portion (31) and the lower connecting portion (32) of the sheet body (3) and the column (41) of the fixing seat (4) to form an integrated composite. The material cantilevered sheet-shaped shock absorber is an optimal improvement and design, which is the most specific improvement of the manufacturing method and device of the composite cantilever type diaphragm shock absorber.

(1)‧‧‧ left mold

(11) ‧‧‧ cavity

(2) ‧‧‧Right mold

(21)‧‧‧Move

(3) ‧ ‧ ‧ body

(31) ‧‧‧Upper connection

(32) ‧‧‧lower connection

(33) ‧‧‧ top board

(4) ‧ ‧ fixed seat

(41)‧‧‧ Column

(42) ‧‧‧Magnet slot

(5) ‧ ‧ voice coil

(6) ‧‧‧cantilever

(7)‧‧‧ Magnet

First Figure: Flow chart of an implementation method of the present invention.

Second Figure: A perspective view of the internal structure of the mold of the present invention.

Fig. 3 is a perspective view showing the appearance of the voice coil and the cantilever of the present invention.

Fourth figure: Schematic diagram of the cantilever beam and the voice coil of the present invention placed in the right mold.

Fig. 5 is a schematic view showing the combination of the left mold and the right mold of the present invention.

Fig. 6 is a view showing the appearance of the injection-molded semi-finished product of the present invention.

Figure 7 is a schematic view of the magnet assembly of the present invention.

Figure 8: Finished view of the magnet assembly of the present invention.

Claims (8)

A manufacturing method of a composite cantilever type sheet shock absorber, comprising: (a) pre-molding left and right molds for injection molding, the left and right molds are provided with mold holes; (b) producing a flat type sound (c) making a cantilever of the composite material; (d) placing the cantilever beam and the voice coil in corresponding positions in the left or right mold cavity; (e) combining the right mold with the left mold; (f) performing plastic injection Forming, forming a semi-finished product of a one-piece composite cantilevered sheet-shaped shock absorber; (g) combining two magnets on both sides of the semi-finished product of the composite cantilevered sheet-shaped shock absorber and fixing it. The method for manufacturing a composite cantilever-type sheet-shaped shock absorber according to claim 1, wherein the planar voice coil is produced by a winding method. The method of manufacturing a composite cantilever-type sheet-shaped shock absorber according to claim 1, wherein the cantilever of the composite material is produced by a hot press forming method. The method for manufacturing a composite cantilever-type sheet-shaped shock absorber according to claim 1, wherein the mold holes of the left and right molds are formed in addition to the composite cantilever-type sheet-shaped shock absorber. The method for manufacturing a composite cantilever-type sheet-shaped shock absorber according to the first aspect of the invention, wherein the composite cantilever-type sheet-shaped shock absorber formed by the left and right molds comprises: a sheet body, an upper connecting portion, Lower connecting part, top plate, fixing seat, column and magnet groove. The method for manufacturing a composite cantilever-type sheet-shaped shock absorber according to claim 5, wherein after performing plastic injection molding, a voice coil is formed to be wrapped in the sheet body, and the cantilever beams are respectively connected to the sheet body and the fixing seat. Between columns. The method for manufacturing a composite cantilever-type sheet-shaped shock absorber according to claim 1, wherein the cantilever beam spanning the sheet body is a linear type, a double-twisted type, a double-twisted type, a double upper concave curved type, and a double concave. Any of the curved or double continuous waves. The method for manufacturing a composite cantilever-type sheet-shaped shock absorber according to claim 1, wherein the top plate has any one of a rectangular shape, an elliptical shape, a circular shape, a trapezoidal shape, a rhombic shape, a polygonal shape, and an irregular shape.