Loudspeaker with centering spider whose elasticity is locally adjustable, and methods for its manufacture

Abstract

Method for manufacturing a loudspeaker with a wire damper or spider with locally adjustable elasticity, comprising the following steps: a preparatory step for the production of a base material that has a single-layer fabric structure and is formed by weaving together a large number of warp threads and a large number of weft threads; an impregnation step in which the base material is impregnated in a resin solution; a drying step in which the base material is dried to form a solid resin layer on the base material; a wire arrangement step in which at least one wire is arranged in at least one wire arrangement area on the base material; a forming step in which the base material and the at least one wire are hot-pressed; wherein the base material is formed with several wave structures and a region with a pre-formed central hole; wherein the at least one wire further presses the at least one wire arrangement area of ​​the base material such that it is recessed inwards to form at least one hollow section, and the at least one wire stretches the warp threads on two sides of the at least one wire arrangement area towards the outer sides, so that the at least one wire enters directly into the at least one hollow section; wherein the wave structures, the preformed area with a central hole and the at least one wire arrangement area are formed with a main body; wherein the at least one wire extends into the at least one hollow section and two ends of the at least one wire each penetrate an inner edge and an outer edge of the main body, such that the main body and the at least one wire are formed with a wire damper, wherein the wave structures are arranged successively or sequentially from an outer edge of the main body to the preformed area with a central hole, wherein each wave structure has a wave crest, a wave trough, an inner side wall and an outer side wall, and wherein the at least one wire arrangement area extends radially from the outer edge of the main body through the wave structures to the preformed area with a central hole;wherein, after the at least one wire stretches the warp threads on two sides of the at least one wire arrangement area towards the outside, a first elastic adjustment area is formed between a warp thread closest to the outside of a first side of the at least one wire arrangement area and a warp thread on the inside of the at least one wire arrangement area, wherein a second elastic adjustment area is formed between a warp thread closest to the outside of a second side of the at least one wire arrangement area and a warp thread on the inside of the at least one wire arrangement area, wherein the widths of the first elastic adjustment area and the second elastic adjustment area are equal to each other and the distances between the remaining warp threads are smaller than the width of the first elastic adjustment area and the second elastic adjustment area;and wherein, after the at least one wire stretches the warp threads towards the outer sides on two sides of the at least one wire arrangement area, each of the depths of the at least one hollow section at the inner side walls and the outer side walls is less than a depth of the at least one hollow section at the wave crests, and wherein each of the depths of the at least one hollow section at the inner side walls and the outer side walls is less than a depth of the at least one hollow section at the wave troughs; ; a cutting step in which the wire damper or centering spider is cut out of the base material and cutting out the pre-formed area with a central hole, so that the wire damper is separated from the base material, wherein the wire damper has a central opening; and an assembly step in which a voice coil is movably arranged in a loudspeaker body, wherein the central hole of the wire damper or the spider is coupled to the voice coil in a sleeve-like manner and the at least one wire of the wire damper or the spider is connected to the voice coil in order to assemble a loudspeaker.

Description

BACKGROUND OF THE INVENTION 1. Technical field of the invention

[0001] The present invention relates to a loudspeaker and a method for its manufacture, in particular a loudspeaker with a wire damper (centering spider) with locally adjustable elasticity and a method for its manufacture. 2. State of the art

[0002] A well-known moving coil loudspeaker uses the principle that the reaction force of a fixed magnetic field moves another magnetic field in the opposite direction to generate sound (i.e., oppositely directed magnetic fields attract each other, and like-directed magnetic fields repel each other). In addition, the AC power generated by the power amplifier is transmitted through a wire to a voice coil to change the polarity of the magnetic field, so that the voice coil exerts a reaction force against a permanent magnetic region or magnetic field generated by a permanent magnet. A forward pulse causes the diaphragm to move outward relative to the magnet, while a reverse pulse causes the diaphragm to move inward. As the voice coil moves the diaphragm back and forth, the diaphragm presses on the air, and the air pressure changes, generating sound waves.The damper or spider is responsible for maintaining the correct position of the voice coil in the gap of a magnetic core of the magnet, ensuring that the voice coil moves back and forth along a longitudinal axis when actuated.

[0003] However, in a conventional speaker, the wire is suspended in the air without any support, so the wire bears the vibrational force transmitted by the voice coil alone. As a result, after the voice coil moves rapidly and frequently for a period of time, the wire can easily fatigue and break.

[0004] In order to solve the above-mentioned problems, the industry has begun to improve the process of attaching the wires to the damper or spider during the manufacturing process of the wire damper or spider. First, a base material is impregnated with a liquid synthetic resin to allow the base material to absorb the synthetic resin; then, the base material that absorbs the resin is dried and cured; then, the wire is firmly bonded to the surface of the base material; next, both the base material and the wire are hot-pressed by the thermoforming device to form a wire damper or spider; finally, the wire damper or spider is cut out of the base material by a cutting device. Because the main body of the wire damper or spider is made of a liquid synthetic resin,the centering spider is used to support the wire, the wire has increased fatigue strength and is not as easy to break.

[0005] However, since the wire is firmly bonded to the wire arrangement portion of the wire damper or spider main body, when the wire damper or spider is thermoformed on the base material, the warp threads on two sides of the wire arrangement portion cannot expand outward. As a result, the wire protrudes from the surface of the wire damper or spider main body, which is easily damaged by the hot pressing of the thermoforming device. The wire damper or spider is unusable due to wire damage and must be discarded, which is quite wasteful. It is obvious that the wire damper or spider produced by the conventional method has a low yield and high manufacturing cost.

[0006] In addition, the wire is harder than the main body of the wire damper or the centering spider, and the elasticity and resilience of the wire are worse than those of the main body of the wire damper or the centering spider. Therefore, under the condition that the wire cannot stretch the warp threads on two sides of the wire arrangement area outwards, the combination of the wire arrangement area and the wire is harder than the other areas of the main body of the wire damper or the centering spider, and the elasticity and resilience of the combination of the wire arrangement area and the wire are worse than those of other areas of the main body of the wire damper or the centering spider. Therefore, the hardness, elasticity, and resilience of the wire damper or the centering spider are uneven, resulting in uneven elastic compliance and fatigue strength of the wire damper or the centering spider, which causes the wire damper or the centering spider to deteriorate.the spider can be easily deformed, thereby impairing the sound quality of the speaker's output.

[0007] Furthermore, the thermoforming machine requires greater pressing force to form the wave crests and troughs of the wave structures on the base material, while the thermoforming machine requires less pressing force to form the inner and outer sidewalls on the base material. It is obvious that the pressing force of the thermoforming machine is uneven, so the thermoforming machine exerts uneven force on the wire, causing the following two problems: first, the wire is easily deformed due to the uneven force; and second, the deformed wire causes the overall structure of the wire damper or spider to be unbalanced. These two problems affect the sound quality of the speaker.

[0008] DE 10 2018 003 589 A1 discloses an electrodynamic sound transducer comprising a housing, a diaphragm, a coil assembly attached to the diaphragm, and a magnet system. The coil assembly comprises a plurality of coils, each having two terminals that are fixed relative to the housing. Connecting wires connect the coils and the terminals. The connection points between the connecting wires and the coils are arranged symmetrically on the coil assembly. Lead wires to the voice coil are attached to the centering spider or applied as a conductive layer.

[0009] DE 18 28 442 U discloses an electrodynamic sound transducer, i.e., a microphone or a loudspeaker, and the arrangement and attachment of the lead wires for the moving coil of such a transducer. The electrodynamic sound transducer comprises a vibrating diaphragm connected to a voice coil wound on a coil former and a mounting arrangement, such as a centering diaphragm, and to lead wires that connect the moving coil to external terminals. The lead wires to the voice coil are applied to the centering spider in a semi-rigid, elastic, gel-like material, and the lead wires are inserted into a tubular material.

[0010] US 2010 / 0172535 A1 discloses a spider assembly for an electromagnetic vibrator, comprising an outer rim configured to be attached to a support frame of the electromagnetic vibrator, an inner rim aligned with the outer rim for attachment to an induction coil of the electromagnetic vibrator, and a plurality of suspension arms extending radially and evenly from the inner rim to the outer rim to enable the inner rim to be moved axially in response to an electromagnetic force between the induction coil and a magnetic element. Each of the suspension arms provides a restoring force toward the inner rim to enable the induction coil to move in a stable, aligned motion with respect to the magnetic element. Lead wires are guided onto the centering spider by spring arms.

[0011] EP 0 604 766 B1 discloses a voice coil contact system for loudspeakers subject to high thermal stress. It comprises a magnet system with a pole core centered on the loudspeaker's center axis and a centering diaphragm with a voice coil attached to one end. A lead to the voice coil is formed as a loudspeaker braid woven into the centering diaphragm. SUMMARY OF THE INVENTION

[0012] The primary objective of the present invention is to provide a loudspeaker with a wire damper or centering spider with locally adjustable elasticity and a method for its manufacture, wherein the wires are not damaged by the hot pressing of the thermoforming device. Consequently, the resulting wire damper or centering spider has a high yield and low manufacturing costs.

[0013] Another object of the present invention is to provide a loudspeaker having a wire damper or a spider with locally adjustable elasticity and a method for its manufacture, wherein the wire damper or the spider has uniform hardness, elasticity and resilience, whereby it has uniform elastic resilience and fatigue resistance and is not easily deformed and brittle, which improves the sound quality of the sound output of the loudspeaker.

[0014] Another object of the present invention is to provide a loudspeaker having a wire damper or spider with locally adjustable elasticity and a method for its manufacture, wherein the thermoforming device exerts a uniform force on the wires so that the wires retain their original shape and are not deformed, thereby improving the sound quality of the sound output of the loudspeaker.

[0015] Another object of the present invention is to provide a loudspeaker having a wire damper or a centering spider with locally adjustable elasticity and a method for its manufacture, ensuring that the wire damper or the centering spider has a more balanced overall structure and is therefore not easily deformable and brittle, which improves the sound quality of the sound output of the loudspeaker.

[0016] To achieve these objects, the present invention provides a method for manufacturing a loudspeaker with a wire damper or a centering spider with locally adjustable elasticity, comprising: a preparation step, an impregnation step, a drying step, a wire arrangement step, a shaping step, a cutting step and an assembly step.

[0017] In the preparation step, a base material is prepared, which is a single-layer fabric structure formed by weaving a plurality of warp threads and a plurality of weft threads.

[0018] In the impregnation step, the base material is impregnated in a resin solution.

[0019] In the drying step, the base material is dried so that a solid resin layer is formed on the base material.

[0020] In the wire arrangement step, at least one wire is arranged on the base material.

[0021] In the forming step, a wire damper or a centering spider is formed on the base material by thermoforming, wherein the wire damper or the centering spider has a main body and the at least one wire, wherein the main body is a single-layer woven structure formed by weaving the warp threads and the weft threads, wherein the solid resin layer is formed on a surface of the main body, wherein the main body comprises a plurality of wave structures, a center hole, and at least one wire arrangement region, wherein the wave structures are arranged sequentially from an outer edge of the main body to the center hole, wherein each wave structure has a wave crest, a wave trough, an inner side wall, and an outer side wall, and wherein the at least one wire arrangement region extends radially from the outer edge of the main body through the wave structures to the center hole;wherein the at least one wire arrangement region is recessed inwardly to form at least one hollow portion, the at least one wire extending in the at least one hollow portion and two ends of the at least one wire respectively penetrating an inner edge and the outer edge of the main body;wherein a first elastic adjustment region is formed between a warp thread closest to the outside of a first side of the at least one wire arrangement region and a warp thread on the inside of the at least one wire arrangement region, wherein a second elastic adjustment region is formed between a warp thread closest to the outside of a second side of the at least one wire arrangement region and a warp thread on the inside of the at least one wire arrangement region, wherein the widths of the first elastic adjustment region and the second elastic adjustment region are equal to each other and the distances between the remaining warp threads are smaller than the width of the first elastic adjustment region and the second elastic adjustment region;and wherein each of the depths of the at least one hollow portion at the inner sidewalls and the outer sidewalls is less than a depth of the at least one hollow portion at the wave crests, and wherein each of the depths of the at least one hollow portion at the inner sidewalls and the outer sidewalls is less than a depth of the at least one hollow portion at the wave troughs.;

[0022] In the cutting step, the wire damper or the centering spider is cut out of the base material.

[0023] During the assembly step, a voice coil is movably arranged in a loudspeaker body, the center hole of the wire damper or the centering spider is coupled to the voice coil in a sleeve-like manner, and at least one wire of the wire damper or the centering spider is connected to the voice coil to assemble a loudspeaker.

[0024] To achieve the above-mentioned objects, the present invention provides a method for manufacturing a loudspeaker having a wire damper or a centering spider with locally adjustable elasticity, comprising: a preparation step, an impregnation step, a drying step, a wire arrangement step, a shaping step, a cutting step, and an assembly step.

[0025] In the preparation step, a base material is prepared that has a double-layered fabric structure and includes a first fabric and a second fabric. The first fabric is formed by interweaving a plurality of first warp threads and a plurality of first weft threads, and the second fabric is formed by interweaving a plurality of second warp threads and a plurality of second weft threads.

[0026] In the impregnation step, the first fabric and the second fabric are each impregnated in a resin solution.

[0027] In the drying step, the first fabric and the second fabric are dried to form a first solid resin layer on the first fabric and a second solid resin layer on the second fabric.

[0028] In the wire arranging step, at least one wire is first arranged on the first fabric and the second fabric is then arranged on the first fabric to form the base material.

[0029] In the forming step, a wire damper or a centering spider is formed on the base material by thermoforming, wherein the wire damper or the centering spider has a main body and the at least one wire, wherein the main body is a double-layered fabric structure and has a first fabric and a second fabric, wherein the first fabric is formed by weaving a plurality of first warp threads and a plurality of first weft threads, wherein a first solid resin layer is formed on a surface of the first fabric, wherein the first fabric has a plurality of first wave structures, a first center hole and at least one first wire arrangement region, wherein the first wave structures are arranged sequentially from an outer edge of the first fabric to the first center hole, wherein each first wave structure has a first wave crest, a first wave trough,a first inner sidewall and a first outer sidewall, wherein the at least one first wire arrangement region extends radially from the outer edge of the first fabric through the first wave structures to the first center hole, wherein the second fabric is formed by weaving a plurality of second warp threads and a plurality of second weft threads, wherein a second solid resin layer is formed on a surface of the second fabric, wherein the second fabric has a plurality of second wave structures, a second center hole, and at least one second wire arrangement region, wherein the second wave structures are arranged sequentially from an outer edge of the second fabric to the second center hole, wherein each second wave structure has a second wave crest, a second wave trough, a second inner sidewall, and a second outer sidewall,wherein the at least one second wire arrangement region extends radially from the outer edge of the second fabric through the second wave structures to the second center hole; wherein the first fabric is combined with the second fabric, and wherein the at least one first wire arrangement region corresponds to the at least one second wire arrangement region; wherein the at least one first wire arrangement region is recessed inwardly to form at least one first trench, wherein the at least one second wire arrangement region is recessed inwardly to form at least one second trench, wherein the at least one first trench and the at least one second trench together form at least one hollow portion,wherein the at least one wire extends in the at least one hollow portion, and two ends of the at least one wire penetrate inner edges and outer edges of the first fabric and the second fabric, respectively; wherein a first lower elastic adjustment region is formed between the first warp thread closest to the outer side of a first side of the at least one first wire arrangement region and the first warp thread on the inner side of the at least one first wire arrangement region, wherein a second lower elastic adjustment region is formed between a first warp thread closest to the outer side of a second side of the at least one first wire arrangement region and a first warp thread on the inner side of the at least one first wire arrangement region,wherein the widths of the first lower elastic adjustment region and the second lower elastic adjustment region are equal to each other, and the distances between the remaining first warp threads are smaller than the width of the first lower elastic adjustment region and the second lower elastic adjustment region; wherein a first upper elastic adjustment region is formed between the second warp thread closest to the outside of a first side of the at least one second wire arrangement region and the second warp thread on the inside of the at least one second wire arrangement region, wherein a second upper elastic adjustment region is formed between a second warp thread closest to the outside of a second side of the at least one second wire arrangement region and a second warp thread on the inside of the at least one second wire arrangement region,wherein the widths of the first upper elastic adjustment region and the second upper elastic adjustment region are equal to one another, and wherein the distances between the remaining second warp threads are smaller than the widths of the first upper elastic adjustment region and the second upper elastic adjustment region; and wherein a depth of the at least one first trench at the first wave crests is smaller than a depth of the at least one second trench at the second wave crests, wherein a depth of the at least one first trench at the first wave troughs is greater than a depth of the at least one second trench at the second wave troughs, wherein a depth of the at least one first trench at the first inner side walls is equal to a depth of the at least one second trench at the second inner side walls,wherein a depth of the at least one first trench on the first outer sidewalls is equal to a depth of the at least one second trench on the second outer sidewalls.,

[0030] In the cutting step, the wire damper or the centering spider is cut out of the base material.

[0031] In the assembly step, a voice coil is movably arranged in a loudspeaker body, the first center hole and the second center hole of the wire damper or the centering spider are sleeve-coupled to the voice coil, and the at least one wire of the wire damper or the centering spider is connected to the voice coil to assemble a loudspeaker.

[0032] To achieve the above-mentioned objects, the present invention provides a loudspeaker with a wire damper or a centering spider with locally adjustable elasticity, comprising a speaker body, a voice coil, and a wire damper or a centering spider. The voice coil is movably arranged in the speaker body. The wire damper or the centering spider comprises a main body and at least one wire. The main body is a single-layer fabric structure formed by interweaving a plurality of warp threads and a plurality of weft threads, with a solid resin layer formed on a surface of the main body. The main body comprises a plurality of wave structures, a center hole, and at least one wire arrangement region, the wave structures being arranged sequentially from an outer edge of the main body to the center hole.wherein each wave structure has a wave crest, a wave trough, an inner side wall, and an outer side wall, wherein the center hole is sleeve-coupled to the voice coil, wherein the at least one wire arrangement region extends radially from the outer edge of the main body through the wave structures to the center hole; wherein the at least one wire arrangement region is recessed inwardly to form at least one hollow portion; wherein a first elastic adjustment region is formed between the warp thread closest to the outside of a first side of the at least one wire arrangement region and the warp thread on the inside of the at least one wire arrangement region, wherein a second elastic adjustment region is formed between a warp thread closest to the outside of a second side of the at least one wire arrangement region,and a warp thread is formed on the inside of the at least one wire arrangement region, wherein the widths of the first elastic adjustment region and the second elastic adjustment region are equal to each other, and wherein the distances between the remaining warp threads are smaller than the width of the first elastic adjustment region and the second elastic adjustment region; and wherein each of the depths of the at least one hollow portion at the inner side walls and the outer side walls is less than a depth of the at least one hollow portion at the wave crests, and wherein each of the depths of the at least one hollow portion at the inner side walls and the outer side walls is less than a depth of the at least one hollow portion at the wave troughs. The at least one wire extends in the at least one hollow portion,wherein two ends of the at least one wire each penetrate an inner edge and the outer edge of the main body and one end of the at least one wire is connected to the voice coil.,

[0033] To achieve the above-mentioned objects, the present invention provides a loudspeaker with a wire damper or a centering spider with locally adjustable elasticity, comprising a loudspeaker body, a voice coil, and a wire damper or a centering spider. The voice coil is movably arranged in the loudspeaker body. The wire damper or the centering spider has a main body and the at least one wire. The main body is a double-layered fabric structure and comprises a first fabric and a second fabric, wherein the first fabric is formed by interweaving a plurality of first warp threads and a plurality of first weft threads, wherein a first solid resin layer is formed on a surface of the first fabric, wherein the first fabric has a plurality of first wave structures, a first center hole, and at least one first wire arrangement region.wherein the first wave structures are arranged sequentially from an outer edge of the first fabric to the first center hole, wherein each first wave structure has a first wave crest, a first wave trough, a first inner side wall, and a first outer side wall, wherein the at least one first wire arrangement region extends radially from the outer edge of the first fabric through the first wave structures to the first center hole, wherein the second fabric is formed by weaving a plurality of second warp threads and a plurality of second weft threads, wherein a second solid resin layer is formed on a surface of the second fabric, wherein the second fabric has a plurality of second wave structures, a second center hole, and at least one second wire arrangement region,wherein the second wave structures are arranged sequentially from an outer edge of the second fabric to the second center hole, each second wave structure having a second wave crest, a second wave trough, a second inner sidewall, and a second outer sidewall, wherein the at least one second wire arrangement region extends radially from the outer edge of the second fabric through the second wave structures to the second center hole; wherein the first fabric is combined with the second fabric, and the at least one first wire arrangement region corresponds to the at least one second wire arrangement region, wherein the first center hole and the second center hole are sleeve-coupled to the voice coil; wherein the at least one first wire arrangement region is recessed inward to form at least one first trench, wherein the at least one second wire arrangement region is recessed inward,to form at least one second trench, wherein the at least one first trench and the at least one second trench together form at least one hollow portion; wherein a first lower elastic adjustment region is formed between the first warp thread closest to the outside of a first side of the at least one first wire arrangement region and the first warp thread on the inside of the at least one first wire arrangement region, wherein a second lower elastic adjustment region is formed between a first warp thread closest to the outside of a second side of the at least one first wire arrangement region and a first warp thread on the inside of the at least one first wire arrangement region,wherein the widths of the first lower elastic adjustment region and the second lower elastic adjustment region are equal to each other, and the distances between the remaining first warp threads are smaller than the width of the first lower elastic adjustment region and the second lower elastic adjustment region; wherein a first upper elastic adjustment region is formed between the second warp thread closest to the outside of a first side of the at least one second wire arrangement region and the second warp thread on the inside of the at least one second wire arrangement region, wherein a second upper elastic adjustment region is formed between a second warp thread closest to the outside of a second side of the at least one second wire arrangement region and a second warp thread on the inside of the at least one second wire arrangement region,wherein the widths of the first upper elastic adjustment region and the second upper elastic adjustment region are equal to each other, and the distances between the remaining second warp threads are smaller than the width of the first upper elastic adjustment region and the second upper elastic adjustment region; and wherein a depth of the at least one first trench at the first wave crests is less than a depth of the at least one second trench at the second wave crests, wherein a depth of the at least one first trench at the first wave troughs is greater than a depth of the at least one second trench at the second wave troughs, wherein a depth of the at least one first trench at the first inner side walls is equal to a depth of the at least one second trench at the second inner side walls,wherein a depth of the at least one first trench on the first outer sidewalls is equal to a depth of the at least one second trench on the second outer sidewalls. The at least one wire extends in the at least one hollow portion, and two ends of the at least one wire penetrate the inner edges and the outer edges of the first fabric and the second fabric, respectively, and one end of the at least one wire is connected to the voice coil.

[0034] The present invention has the advantage that the wire arrangement areas can be pressed through the wires, causing them to indent and form the cavities. This ensures that the wires are not damaged by the hot pressing of the thermoforming device. As a result, the manufactured wire damper or centering spider has a high yield and low manufacturing costs.

[0035] Furthermore, the hardness, elasticity, and resilience of the wire array sections can be adjusted through the elastic adjustment sections. This makes the wire array sections softer and increases their elasticity and resilience. As a result, the hardness, elasticity, and resilience of the combination of the wire array sections and the wires are equivalent to those of other sections of the main body. Therefore, the wire damper or centering spider has uniform hardness, elasticity, and resilience, ensuring uniform elastic resilience and fatigue strength, and is not easily deformed or brittle, thus improving the sound quality of the speaker's sound output.

[0036] Since the hollow sections with uneven depth allow the wires to extend therein in an uneven arrangement, the thermoforming device can apply a uniform force to the wires, so that the wires maintain their original shape and are not deformed, thereby improving the sound quality of the speaker's sound output.

[0037] Furthermore, the present invention can ensure that the wire damper or the centering spider has a more balanced overall structure and is therefore not easily deformed and brittle, which improves the sound quality of the sound output of the loudspeaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The present invention will be understood by those skilled in the art by reading the following detailed description of a preferred embodiment with reference to the accompanying drawings. Fig. 1 is a block flow diagram of a first embodiment of the manufacturing method of the present invention; Fig. 2 is a schematic flow diagram of the first embodiment of the manufacturing method of the present invention; Fig. 3 shows a first embodiment of the loudspeaker according to the invention in a perspective view; Fig. 4 shows the first embodiment of the loudspeaker according to the invention in an exploded view; Fig. 5 shows the first embodiment of the loudspeaker according to the invention in a sectional view; Fig. 6 the wire damper or the centering spider of the first embodiment according to the invention in a perspective view; Fig. 7 shows the wire damper or the centering spider of the first embodiment according to the invention in an exploded view; Fig. 8 a sectional view along line AA of Fig. 6; Fig. 9 a sectional view along line BB of Fig. 6; Fig. 10 a sectional view along line C1-C1 and line C2-C2 of Fig. 6; Fig. 11A and Fig. 11B schematic flow diagrams of a second embodiment of the manufacturing method of the present invention; Fig. 12 shows a wire damper or a centering spider of the second embodiment according to the invention in a perspective view; Fig. 13 the wire damper or the centering spider of the second embodiment according to the invention in an exploded view; Fig. 14 a sectional view along line DD of Fig. 12; Fig. 15 a sectional view along line EE of Fig. 12; and Fig. 16 a sectional view along line F1-F1 and line F2-F2 of Fig. 12; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0039] Embodiments of the present invention will now be described in more detail with reference to the drawings and reference numerals so that those skilled in the art can carry them out after studying this specification.

[0040] With reference to the Fig. 1 to 10, the present invention provides a method for manufacturing a loudspeaker with a wire damper or a centering spider with locally adjustable elasticity, which comprises the following steps: a preparation step S1, an impregnation step S2, a drying step S3, a wire arrangement step S4, a shaping step S5, a cutting step S6 and an assembly step S7.

[0041] In the preparation step S1, as in Fig. 2, a base material 10 is produced which is a single-layer fabric structure and is formed by weaving a plurality of warp threads 11 and a plurality of weft threads 12.

[0042] In the impregnation step S2, as in Fig. 2, the base material 10 is impregnated in a resin solution 21 in a resin tank 20 so that the warp threads 11 and the weft threads 12 adsorb the resin and are bonded to the resin.

[0043] In the drying step S3, as in Fig. 2, a drying device 30 is provided with an upper baking plate 31 and a lower baking plate 32. Utilizing the temperature of the upper baking plate 31 and the lower baking plate 32, the moisture and volatile substances in the resin are removed from the base material 10, thereby drying the base material 10. During this time, the resin penetrates the base material 10 and adheres to the warp threads 11 and the weft threads 12, forming a solid resin layer 13.

[0044] In the wire arrangement step S4, as in Fig. 2, at least one wire 42 is arranged on at least one wire arrangement region 413 on the base material 10. In the first embodiment, four wire arrangement regions 413 of each damper or centering spider forming region 14 on the base material 10 are provided with four wires 42. However, the number of wires 42 provided in each damper or centering spider forming region 14 on the base material 10 is not limited thereto. Preferably, as shown in the Fig. As shown in Figures 6 to 9, the cross-section of each wire 42 is circular. In other embodiments, the cross-section of each wire 42 may also have a flat cross-section.

[0045] In the forming step S5, as in Fig. 2, a thermoforming device 50 is provided with a mold 51 and a heating device (not shown), and the mold 51 includes an upper mold 511 and a lower mold 512. The upper mold 511 includes a plurality of protrusions and a plurality of depressions, as well as a central flat portion, and the lower mold 512 includes a plurality of protrusions and a plurality of depressions, as well as a central flat portion. When the upper mold 511 and the lower mold 512 are pressed together, the depressions of the upper mold 511 and the protrusions of the lower mold 512 press the base material 10 to form a plurality of wave crests 4111 and the at least one wire 42. Furthermore, the protrusions of the upper mold 511 and the depressions of the lower mold 512 press the base material 10 to form a plurality of wave troughs 4112 and the at least one wire 42.Furthermore, the outer sides of the protrusions of the upper die 511 and the inner sides of the protrusions of the lower die 512 press the base material 10 to form a plurality of inner sidewalls 4113 and the at least one wire 42. Furthermore, the inner sides of the protrusions of the upper die 511 and the outer sides of the protrusions of the lower die 512 press the base material 10 to form a plurality of outer sidewalls 4114 and the at least one wire 42. The central flat portion of the upper die 511 and the central flat portion of the lower die 512 press the base material 10 to form a preformed region with a center hole. Each crest 4111, each trough 4112, each inner sidewall 4113, and each outer sidewall 4114 are formed with a wave structure.Under the pressure of the upper forming tool 511 and the lower forming tool 512, the at least one wire 42 further pushes the at least one wire arrangement region 413 of the base material 10 inward to form at least one hollow portion 414, and the at least one wire 42 stretches the warp threads 111 on two sides of the at least one wire arrangement region 413 toward the outside, so that the at least one wire 42 directly enters the at least one hollow portion 414.As a result, the corrugated structures 411, the region with a pre-formed center hole, and the region with at least one wire arrangement region 413 are formed with a main body 41, wherein the at least one wire 42 extends into the at least one hollow section 414, and two ends of the at least one wire 42 each pass through the inner edges and outer edges of the main body 41, so that the main body 41 and the at least one wire 42 are formed with a wire damper 40. The corrugated structures 411 are formed sequentially from the outer edge of the main body 41 toward the pre-formed region with the center hole. The at least one wire arrangement region 413 extends radially from the outer edge of the main body 41 through the corrugated structures 411 to the pre-formed region with the center hole. As shown in FIGS. Fig. 8 to 10, the at least one wire 42 stretches the warp threads 111 on two sides of the at least one wire arrangement region 413 toward the outer sides, wherein a first elastic adjustment region 151 is formed between a warp thread 111 that is closest to the outer side of a first side 4131 of the at least one wire arrangement region 413 and a warp thread 112 on the inner side of the at least one wire arrangement region 413, wherein a second elastic adjustment region 152 is further formed between a warp thread 111 that is closest to the outer side of a second side 4132 of the at least one wire arrangement region 413 and the warp thread 112 on the inner side of the at least one wire arrangement region 413, wherein the widths of the first elastic adjustment region 151 and the second elastic adjustment region 152 are the same,and the distances between the remaining warp threads 11 are smaller than the width of each of the first elastic adjustment areas 151 and the second elastic adjustment areas 152. As shown in the , Fig. 8 to 10, after the at least one wire 42 stretches the warp threads 111 on two sides of the at least one wire arrangement region 413 towards the outer sides, the depth D31 of the at least one hollow section 414 at the inner side walls 4113 is less than the depth D1 of the at least one hollow section 414 at the wave crests 4111, the depth D32 of the at least one hollow section 414 at the outer side walls 4114 is less than the depth D1 of the at least one hollow section 414 at the wave crests 4111, the depth D31 of the at least one hollow section 414 at the inner side walls 4113 is less than the depth D2 of the at least one hollow section 414 at the wave troughs 4112, and the depth D32 of the at least one hollow section 414 at the outer side walls 4114 is less than the depth D2 of the at least one hollow section 414 at the wave troughs 4112. Preferably, as in Fig. 8 and Fig. 9, the depth D1 of the at least one hollow section 414 at the wave crests 4111 is equal to the depth D2 of the at least one hollow section 414 at the wave troughs 4112. Preferably, as in Fig. 10, the depth D31 of the at least one hollow portion 414 on the inner side walls 4113 is equal to the depth D32 of the at least one hollow portion 414 on the outer side walls 4114. In the first embodiment, the wire damper 40 has four wires 42, and the main body 41 has four wire arrangement portions 413. The wires 42 are respectively arranged on the wire arrangement portions 413. The wire arrangement portions 413 are recessed inward to form four hollow portions 414. The wires 42 each extend in the hollow portions 414. When the upper mold 511 and the lower mold 512 are pressed against each other and apply pressure to the base material 10 and the at least one wire 42, electric power is supplied to the heater to increase the temperature of the upper mold 511 and the lower mold 512, thereby softening the resin on the base material 10.In addition to destroying or breaking up the resin structure, the resin also fills interstices, bonding individual portions of the resin together to form the final morphology of the solid resin layer 13. This creates the resin cover between the warp threads 11 and the weft threads 12.

[0046] In cutting step S6, as in Fig. 2, a cutting device 60 is provided with an upper cutting tool 61 and a lower cutting tool 62. The wire damper or centering spider 40 is cut out of the base material 10 by the upper cutting tool 61 and the lower cutting tool 62, and the preformed area with the center hole is cut out by the upper cutting tool 61 and the lower cutting tool 62, so that the wire damper or centering spider 40 is separated from the base material 10, and the wire damper 40 has a center hole 412.

[0047] In assembly step S7, as in Fig. As shown in Figures 2 to 5, a loudspeaker body 71 has a base 711, a permanent magnet 712, a basket 713, a diaphragm 714, a dust cover or cover cap 715, and a surround 716. The permanent magnet 712 is arranged on the base 711. A voice coil 72 is movably arranged in the permanent magnet 712. The basket 713 is arranged on top of the permanent magnet 712 and supports the outer edge of the main body 41 of the wire damper or centering spider 40. The diaphragm 714 is coupled to the voice coil 72 in a sleeve-like manner. The cover cap 715 is arranged on a center hole of the diaphragm 714. The surround 716 is arranged between the upper edge of the diaphragm 714 and the basket 713. The center hole 412 of the wire damper or the centering spider 40 is coupled to the voice coil 72 in a sleeve-like manner and the wires 42 of the wire damper or the centering spider 40 are connected to the voice coil 72.The loudspeaker body 71, the voice coil 72 and the wire damper or the centering spider 40 are assembled to form a loudspeaker 70.

[0048] As in the Fig. As shown in Figures 3 to 10, the present invention provides a loudspeaker 70 with a wire damper or spider with locally adjustable elasticity, wherein the loudspeaker 70 comprises a loudspeaker body 71, a voice coil 72, and a wire damper or spider 40. The structure of the loudspeaker body 71, the voice coil 72, and the wire damper or spider 40 and their connection relationship are as described above.

[0049] Accordingly, since the wires 42 do not adhere tightly to the surface of the threads of the base material 10 when arranged on the base material 10, the wire arrangement regions 413 can be pressed by the wires 42 when the wire damper or the spider 40 is formed on the base material 10 by hot pressing by the thermoforming device 50, and the wire arrangement regions 413 are indented inward to form the hollow portions 414. This ensures that the wires 42 are not damaged by the thermal pressurization of the thermoforming device 50. As a result, the manufactured wire damper or the spider 40 has a high yield and a low manufacturing cost.

[0050] Furthermore, the first elastic adjustment portions 151 and the second elastic adjustment portions 152 can adjust the hardness, elasticity, and resilience of the wire arrangement portions 413. This softens the wire arrangement portions 413 and increases their elasticity and resilience. As a result, the hardness, elasticity, and resilience of the combination of the wire arrangement portions 413 and the wires 42 are equivalent to those of the other portions of the main body 41. Therefore, the wire damper or spider 40 has uniform hardness, elasticity, and resilience, thereby providing uniform elastic resilience and fatigue strength, and preventing it from being easily deformed and brittle, thus improving the sound quality of the speaker's output.

[0051] Furthermore, the thermoforming device 50 must apply a uniform force to each wire 42 to ensure that each wire 42 is not deformed due to uneven pressure. However, the thermoforming device 50 requires a larger pressing force to thermoform the wave crests 4111 and the wave troughs 4112, and the thermoforming device 50 requires a smaller pressing force to thermoform the inner side walls 4113 and the outer side walls 4114.Therefore, after the at least one wire 42 stretches the warp threads 111 on two sides of the at least one wire arrangement region 413 toward the outer sides, the depth D31 of the hollow sections 414 at the inner side walls 4113 is less than the depth D1 of the hollow sections 414 at the wave crests 4111, the depth D32 of the hollow sections 414 at the outer side walls 4114 is less than the depth D1 of the hollow sections 414 at the wave crests 4111, the depth D31 of the hollow sections 414 at the inner side walls 4113 is less than the depth D2 of the hollow sections 414 at the wave troughs 4112, and the depth D32 of the hollow sections 414 at the outer side walls 4114 is less than the depth D2 of the hollow sections 414 at the Wave troughs 4112. In other words, the depths of the hollow sections 414 are uneven or varying.Because the hollow portions 414 with uneven depth allow the wires 42 to extend therein in an uneven arrangement, the thermoforming device 50 can apply a uniform force to each wire 42, so that the wires 42 maintain their original shape and are not deformed, thereby improving the sound quality of the speaker's sound output. Under the condition that the wires 42 maintain their original shape, relatively large volume fractions of the wires 42 are positioned in the hollow portions 414 at the wave crests 4111 and the wave troughs 4112, while relatively small volume fractions of the wires 42 are positioned in the hollow portions 414 at the inner side walls 4113 and the outer side walls 4114.In addition, relatively small volume parts of the wires 42 are exposed on the surface of the main body 41 at the wave crests 4111 and the wave troughs 4112, while relatively large volume parts of the wires 42 are exposed on the surface of the main body 41 at the inner side walls 4113 and the outer side walls 4114.

[0052] Furthermore, the depth D1 of the hollow portions 414 at the crests 4111 is equal to the depth D2 of the hollow portions 414 at the troughs 4112, so that the volumes of the wires 42 positioned in the hollow portions 414 at the crests 4111 and the troughs 4112 are equal to each other, and the volumes of the wires 42 exposed on the surface of the main body 41 at the crests 4111 and the troughs 4112 are equal to each other. In addition, since the depth D31 of the hollow portions 414 on the inner side walls 4113 is equal to the depth D32 of the hollow portions 414 on the outer side walls 4114, the volumes of the wires 42 arranged in the hollow portions 414 on the inner side walls 4113 and the outer side walls 4114 are equal to each other, and the volumes of the wires 42 exposed on the surface of the main body 41 on the inner side walls 4113 and the outer side walls 4114 are equal to each other.Therefore, the wire damper or the centering spider 40 has a more balanced overall structure with uniform hardness, elasticity and resilience, which makes it have uniform elastic resilience and fatigue strength and is not easily deformed and brittle, which improves the sound quality of the speaker's sound output.

[0053] With reference to Fig. 1 and Fig. 11A to 16, the present invention provides a method for manufacturing a loudspeaker with a wire damper and a centering spider with locally adjustable elasticity, respectively, wherein the manufacturing method of the second embodiment differs from that of the first embodiment as follows.

[0054] In a preparation step S1, as in Fig. 11A, a base material 10A is formed as a two-layer woven structure and includes a first woven fabric 101 and a second woven fabric 102. The first woven fabric 101 is formed by interweaving a plurality of first warp threads 11A and a plurality of first weft threads 12A. The second woven fabric 102 is formed by interweaving a plurality of second warp threads 11B and a plurality of second weft threads 12B.

[0055] In an impregnation step S2, as in Fig. As shown in Figure 11A, the first fabric 101 and the second fabric 102 are impregnated in a resin solution 21.

[0056] In a drying step S3, as in Fig. 11A, the first fabric 101 and the second fabric 102 are dried to form a first solid resin layer 13A on the first fabric 101 and a second solid resin layer 13B on the second fabric 102.

[0057] In a wire arrangement step S4 as shown in Fig. 11A, first, at least one wire 42 is arranged on at least one first wire arrangement region 413A of the first fabric 101, the second fabric 102 is then arranged on the first fabric 101, at least one wire 42 is arranged on at least one second wire arrangement region 413B of the second fabric 102, and the at least one first wire arrangement region 413A corresponds to the at least one second wire arrangement region 413B.

[0058] If in a forming step S5, as in Fig. 11B, the upper forming tool 511 and the lower forming tool 512 are pressed together, the depressions of the upper forming tool 511 and the elevations of the lower forming tool 512 press the first fabric 101 to form a plurality of first wave crests 4111A, the second fabric 102 to form a plurality of second wave crests 4111B, and the at least one wire 42. The elevations of the upper forming tool 511 and the depressions of the lower forming tool 512 press the first fabric 101 to form a plurality of first wave troughs 4112A, and the second fabric 102 to form a plurality of second wave troughs 4112B, and the at least one wire 42. The outer sides of the elevations of the upper forming tool 511 and the inner sides of the elevations of the lower forming tool 512 press the first fabric 101 to form a plurality of first inner side walls 4113A, the second fabric 102 to form a plurality of second inner side walls 4113B,and the at least one wire 42. The inner sides of the protrusions of the upper forming tool 511 and the outer sides of the protrusions of the lower forming tool 512 press the first fabric 101 to form a plurality of first outer sidewalls 4114A, the second fabric 102 to form a plurality of second outer sidewalls 4114B, and the at least one wire 42. The central flat portion of the upper forming tool 511 and the central flat portion of the lower forming tool 512 press the first fabric 101 to form a pre-formed region with a first center hole, and the second fabric 102 to form a pre-formed region with a second center hole. Each first wave crest 4111A, each first wave trough 4112A, each first inner side wall 4113A and each first outer side wall 4114A are formed with a first wave structure 411A, and each second wave crest 4111B, each second wave trough 4112B,Each second inner sidewall 4113B and each second outer sidewall 4114B are formed with a second wave structure 411B. Under the pressure of the upper forming tool 511 and the lower forming tool 512, the at least one wire 42 presses the at least one first wire arrangement region 413A of the first fabric 101 further inward to form at least one first trench 4141, and the at least one wire 42 presses the at least one second wire arrangement region 413B further inward to form at least one second trench 4142, wherein the at least one first trench 4141 and the at least one second trench 4142 together form at least one hollow portion 414A, wherein the at least one wire 42 stretches the first warp threads 111A on two sides of the at least one first wire arrangement region 413A toward the outside.and the at least one wire 42 stretches the second threads 111B on two sides of the at least one second wire arrangement region 413B toward the outer sides, so that the at least one wire 42 directly enters the at least one hollow section 414A. Therefore, the first wave structures 411A, the first preformed region with a center hole, and the at least one first wire arrangement region 413A are formed with a first fabric 415, and the second wave structures 411B, the second preformed region with a center hole, and the at least one second wire arrangement region 413B are formed with a second fabric 416, wherein the first fabric 415 is joined to the second fabric 416 and formed with a main body 41A, wherein the at least one wire 42 extends in the at least one hollow section 414A.and two ends of the at least one wire 42 respectively pass through the inner and outer edges of the first fabric 415 and the second fabric 416,so that the main body 41A and the at least one wire 42 are formed with a wire damper 40A. The first wave structures 411A are arranged sequentially from the outer edge of the first fabric 415 to the preformed region with the first center hole. The at least one first wire arrangement region 413A extends radially from the outer edge of the first fabric 415 through the first wave structures 411A to the preformed region with the first center hole. The second wave structures 411B are arranged sequentially from the outer edge of the second fabric 416 to the preformed region with the second center hole. The at least one second wire arrangement region 413B extends radially from the outer edge of the second fabric 416 through the second wave structures 411B to the preformed region with the second center hole. As shown in FIGS. Fig. 14 to 16, after the at least one wire 42 stretches the first warp threads 111A on two sides of the at least one first wire arrangement region 413A toward the outer sides, a first lower elastic adjustment region 161 is formed between a first warp thread 111A closest to the outer side of a first side 4131A of the at least one first wire arrangement region 413A and a first warp thread 112A on the inner side of the at least one first wire arrangement region 413A. A second lower elastic adjustment region 162 is formed between a first warp thread 111A closest to the outer side of a second side 4132A of the at least one first wire arrangement region 413A and a first warp thread 112A on the inner side of the at least one first wire arrangement region 413A.The widths of the first lower elastic adjustment portion 161 and the second lower elastic adjustment portion 162 are equal to each other, and the distances between the remaining first warp threads 11A are smaller than the width of each of the first lower elastic adjustment portion 161 and the second lower elastic adjustment portion 162. As shown in FIGS. Fig. 14 to 16, after the at least one wire 42 stretches the second warp threads 111B on two sides of the at least one second wire arrangement region 413B toward the outer sides, a first upper elastic adjustment region 171 is formed between a second warp thread 111B closest to the outer side of a first side 4131B of the at least one second wire arrangement region 413B and a second warp thread 112B on the inner side of the at least one second wire arrangement region 413B, a second upper elastic adjustment region 172 is formed between a second warp thread 111B closest to the outer side of a second side 4132B of the at least one second wire arrangement region 413B and a second warp thread 112B on the inner side of the at least one second wire arrangement region 413B,the widths of the first upper elastic adjustment portion 171 and the second upper elastic adjustment portion 172 are equal to each other, and the distances between the remaining second warp threads 11B are smaller than the width of the first upper elastic adjustment portion 171 and the second upper elastic adjustment portion 172. As shown in FIGS. , Fig. 14 to 16, after the at least one wire 42 stretches the first warp threads 111A on two sides of the at least one first wire arrangement region 413A toward the outer sides, and after the at least one wire 42 stretches the second warp threads 111B on two sides of the at least one second wire arrangement region 413B toward the outer sides, the depth D4 of the at least one first trench 4141 at the first wave crests 4111A is less than the depth D5 of the at least one second trench 4142 at the second wave crests 4111B, the depth D6 of the at least one first trench 4141 at the first wave troughs 4112A is greater than the depth D7 of the at least one second trench 4142 at the second wave troughs 4112B, the depth D81 of the at least one first trench 4141 at the first inner Side walls 4113A is equal to the depth D91 of the at least one second trench 4142 on the second inner side walls 4113B,and the depth D82 of the at least one first trench 4141 on the first outer sidewalls 4114A is equal to the depth D92 of the at least one second trench 4142 on the second outer sidewalls 4114B. Preferably, as shown in FIGS. Fig. 14 and Fig. 15, the depth D4 of the at least one first trench 4141 at the first wave crests 4111A is equal to the depth D7 of the at least one second trench 4142 at the second wave troughs 4112B, and the depth D5 of the at least one second trench 4142 at the second wave crests 4111B is equal to the depth D6 of the at least one first trench 4141 at the first wave troughs 4112A. In addition, as shown in Fig. 16, the depth D81 of the at least one first trench 4141 on the first inner sidewalls 4113A is equal to the depth D82 of the at least one first trench 4141 on the first outer sidewalls 4114A; and the depth D91 of the at least one second trench 4142 on the second inner sidewalls 4113B is equal to the depth D92 of the at least one second trench 4142 on the second outer sidewalls 4114B. In the second embodiment, the wire damper or spider 40A comprises four wires 42. The first web 415 comprises four first wire arrangement regions 413A, and the second web 416 comprises four second wire arrangement regions 413B. The wires 42 are arranged in the first wire arrangement regions 413A and the second wire arrangement regions 413B, respectively.The first wire arrangement regions 413A are recessed inward to form four first grooves 4141, the second wire arrangement regions 413B are recessed inward to form four second grooves 4142, and the first grooves 4141 and the second grooves 4142 together form four hollow sections 414A. The wires 42 respectively extend in the hollow sections 414A. When the upper die 511 and the lower die 512 are pressed together and press the first web 101, the second web 102, and at least one wire 42, current is applied to the heater to increase the temperature of the upper die 511 and the lower die 512, thereby softening the resin on the first web 101 and the second web 102.In addition to breaking the resin structure, the resin also flows into the interstices, bonding the respective parts of the resin together and forming the final morphology of the solid resin layer 13. Therefore, the resin covers the warp threads 11 and the weft threads 12.

[0059] In the cutting step S6, as in Fig. 11B, the wire damper 40A is cut out from the base material 10A, and both the preformed portion with the first center hole and the preformed portion with the second center hole are cut out by the upper cutting tool 61 and the lower cutting tool 62, so that the wire damper 40A is separated from the base material 10A and the wire damper 40A has a first center hole 412A and a second center hole 412B.

[0060] In an assembly step S7, as shown in Fig. 11B, the first center hole 412A and the second center hole 412B are each sleeve-coupled to a voice coil.

[0061] As in the Fig. 12 to 16, the present invention provides a loudspeaker 70A having a wire damper or spider with locally adjustable elasticity, the differences between the structure of the loudspeaker 70A of the second embodiment and the loudspeaker 70 of the first embodiment being as described above.

[0062] Therefore, since the wires 42 are not firmly adhered to the surface of the threads of the first fabric 101 when the wire damper 40 is formed on the base material 10 by hot pressing using the thermoforming device 50, the first wire arrangement regions 413A and the second wire arrangement regions 413B can be pressed by the wires 42, thereby indenting them to form the first grooves 4141 and the second grooves 4142, and the first grooves 4141 and the second grooves 4142 can further form the hollow portions 414A. This ensures that the wires 42 are not damaged by the hot pressing of the thermoforming device 50. As a result, the manufactured wire damper or the manufactured spider 40 has a high yield and a low manufacturing cost.

[0063] Furthermore, the hardness, elasticity, and resilience of the first wire arrangement portions 413A can be adjusted by the first lower elastic adjustment portions 161 and the second lower elastic adjustment portions 162, and the hardness, elasticity, and resilience of the second wire arrangement portions 413B can be adjusted by the first upper elastic adjustment portions 171 and the second upper elastic adjustment portions 172. Therefore, the first wire arrangement portions 413A and the second wire arrangement portions 413B become softer, and their elasticity and resilience are increased. As a result, the hardness, elasticity, and resilience of the combination of the first wire arrangement portions 413A, the second wire arrangement portions 413B, and the wires 42 correspond to those of the other portions of the main body 41A. Therefore, the wire damper or the centering spider 40A has uniform hardness, elasticity, and resilience, whereby it or the second wire arrangement portions 413B can be adjusted.which has uniform elastic resilience and fatigue strength and is not easily deformed and brittle, which improves the sound quality of the speaker's sound output.

[0064] Furthermore, the thermoforming apparatus 50 must apply a uniform force to each wire 42 to ensure that each wire 42 is not deformed due to uneven pressure. However, the thermoforming apparatus 50 requires a larger pressing force to thermoform the first wave crests 4111A, the first wave troughs 4112A, the second wave crests 4111B, and the second wave troughs 4112B. Furthermore, the thermoforming apparatus 50 requires comparatively less pressing force to thermoform the first inner side walls 4113A, the first outer side walls 4114A, the second inner side walls 4113B, and the second outer side walls 4114B.Therefore, after the at least one wire 42 stretches the first warp threads 111A on two sides of the at least one first wire arrangement region 413A toward the outer sides, and after the at least one wire 42 stretches the second warp threads 111B on two sides of the at least one second wire arrangement region 413B toward the outer sides, the depth D4 of the first trenches 4141 at the first crests 4111A is less than the depth D5 of the second trenches 4142 at the second crests 4111B. The depth D6 of the first trenches 4141 at the first troughs 4112A is greater than the depth D7 of the second trenches 4142 at the second troughs 4112B. The depth D81 of the first trenches 4141 on the first inner sidewalls 4113A is equal to the depth D91 of the second trenches 4142 on the second inner sidewalls 4113B. The depth D82 of the first trenches 4141 on the first outer sidewalls 4114A is equal to the depth D92 of the second trenches 4142 on the second outer sidewalls 4114B.In other words, the depths of the hollow portions 414A are uneven. Because the hollow portions 414A with uneven depth allow the wires 42 to extend therein in an uneven arrangement, the thermoforming device 50 can apply a uniform force to each wire 42, allowing the wires 42 to maintain their original shape and not be deformed, thereby improving the sound quality of the speaker's sound output.Under the condition that the wires 42 maintain their original shape, the diameter of the hollow portions 414A in the space between the first wave crests 4111A and the second wave crests 4111B is equal to the diameter of the wires 42; the diameter of the hollow portions 414A in the space between the first wave troughs 4112A and the second wave troughs 4112B is equal to the diameter of the wires 42; the diameter of the hollow portions 414A in the space between the first inner side walls 4113A and the second inner side walls 4113B is equal to the diameter of the wires 42; and the diameter of the hollow portions 414A in the space between the first outer side walls 4114A and the second outer side walls 4114B is equal to the diameter of the wires 42.

[0065] Furthermore, the depth D4 of the first trenches 4141 at the first crests 4111A is equal to the depth D7 of the second trenches 4142 at the second troughs 4112B, and the depth D5 of the second trenches 4142 at the second crests 4111B is equal to the depth D6 of the first trenches 4141 at the first troughs 4112A, so that the diameter of the hollow portions 414A in the space between the first crests 4111A and the second crests 4111B is equal to the diameter of the hollow portions 414A in the space between the first troughs 4112A and the second troughs 4112B.In addition, the depth D81 of the first trenches 4141 on the first inner sidewalls 4113A is equal to the depth D82 of the first trenches 4141 on the first outer sidewalls 4114A, and the depth D91 of the second trenches 4142 on the second inner sidewalls 4113B is equal to the depth D92 of the second trenches 4142 on the second outer sidewalls 4114B, so that the diameter of the hollow portions 414A in the space between the first inner sidewalls 4113A and the second inner sidewalls 4113B is equal to the diameter of the hollow portions 414A in the space between the first outer sidewalls 4114A and the second outer sidewalls 4114B. Therefore, the wire damper or the centering spider 40A has a more balanced overall structure with uniform hardness, elasticity and resilience, which makes it or the centering spider 40A more suitable for the application.which has uniform elastic resilience and fatigue strength and is not easily deformed and brittle, which improves the sound quality of the speaker's sound output.

[0066] It should be noted that the wires 42 do not come into contact with the thermoforming device 50 because they are arranged between the first fabric 101 and the second fabric 102, thereby ensuring that the wires 42 are not damaged by the hot pressing of the thermoforming device 50. As a result, the manufactured wire damper or centering spider 40A has a high yield and low manufacturing cost.

[0067] The above-described are only preferred embodiments to illustrate the present invention, but are not intended to limit the present invention in any way, so that all changes or modifications related to the present invention and made in the same spirit of the invention are still to be included within the scope of the invention as claimed.

Claims

[1] Method for manufacturing a loudspeaker with a wire damper or a centering spider with locally adjustable elasticity, comprising the following steps: a preparation step for producing a base material having a single-layer fabric structure and formed by weaving a plurality of warp threads and a plurality of weft threads; an impregnation step in which the base material is impregnated in a resin solution; a drying step of drying the base material to form a solid resin layer on the base material; a wire arranging step of arranging at least one wire in at least one wire arranging region on the base material; a forming step in which the base material and the at least one wire are hot-pressed; wherein the base material is formed with a plurality of wave structures and a region with a pre-formed center hole; wherein the at least one wire further presses the at least one wire arrangement region of the base material such that it is recessed inward to form at least one hollow portion, and the at least one wire stretches the warp threads on two sides of the at least one wire arrangement region toward the outer sides so that the at least one wire directly enters the at least one hollow portion; wherein the wave structures, the preformed region with a center hole, and the at least one wire arrangement region are formed with a main body; wherein the at least one wire extends in the at least one hollow portion, and two ends of the at least one wire each pass through an inner edge and an outer edge of the main body, so that the main body and the at least one wire are formed with a wire damper, wherein the wave structures are arranged sequentially from an outer edge of the main body to the pre-formed area with a center hole, wherein each wave structure has a wave crest, a wave trough, an inner side wall and an outer side wall, and wherein the at least one wire arrangement area extends radially from the outer edge of the main body through the wave structures to the pre-formed area with a center hole;wherein, after the at least one wire stretches the warp threads on two sides of the at least one wire arrangement region toward the outer sides, a first elastic adjustment region is formed between a warp thread closest to the outer side of a first side of the at least one wire arrangement region and a warp thread on the inner side of the at least one wire arrangement region, wherein a second elastic adjustment region is formed between a warp thread closest to the outer side of a second side of the at least one wire arrangement region and a warp thread on the inner side of the at least one wire arrangement region, wherein the widths of the first elastic adjustment region and the second elastic adjustment region are equal to each other, and the distances between the remaining warp threads are smaller than the width of the first elastic adjustment region and the second elastic adjustment region;and wherein, after the at least one wire stretches the warp threads on two sides of the at least one wire arrangement region toward the outer sides, each of the depths of the at least one hollow portion at the inner side walls and the outer side walls is less than a depth of the at least one hollow portion at the wave crests, and wherein each of the depths of the at least one hollow portion at the inner side walls and the outer side walls is less than a depth of the at least one hollow portion at the wave troughs; a cutting step in which the wire damper or the centering spider is cut out of the base material and the preformed area with a center hole is cut out, so that the wire damper is separated from the base material, the wire damper having a central opening; and an assembly step in which a voice coil is movably arranged in a loudspeaker body, wherein the center hole of the wire damper or the centering spider is sleeve-coupled to the voice coil and the at least one wire of the wire damper or the centering spider is connected to the voice coil to assemble a loudspeaker. [2] The method according to claim 1, wherein in the forming step, the depth of the at least one hollow portion at the wave crests is equal to the depth of the at least one hollow portion at the wave troughs, and the depth of the at least one hollow portion at the inner side walls is equal to the depth of the at least one hollow portion at the outer side walls. [3] Method for manufacturing a loudspeaker with a wire damper or a centering spider with locally adjustable elasticity, comprising the following steps: a preparation step of preparing a base material having a double-layered fabric structure comprising a first fabric and a second fabric, the first fabric being formed by weaving a plurality of first warp threads and a plurality of first weft threads, and the second fabric being formed by weaving a plurality of second warp threads and a plurality of second weft threads; an impregnation step in which the first fabric and the second fabric are each impregnated in a resin solution; a drying step in which the first fabric and the second fabric are dried to form a first solid resin layer on the first fabric and forming a second solid resin layer on the second fabric; a wire arranging step of first arranging at least one wire on at least one first wire arranging portion on the first fabric, and then arranging the second fabric on the first fabric, wherein at least one wire is arranged on at least one second wire arranging portion on the second fabric, and the at least one first wire arranging portion corresponds to the at least one second wire arranging portion; a forming step comprising hot-pressing the first fabric, the second fabric, and the at least one wire; wherein the first fabric is formed with a plurality of first wave structures and a preformed portion having a first center hole, and the second fabric is formed with a plurality of second wave structures and a preformed portion having a second center hole;wherein the at least one wire further presses on the at least one first wire arrangement region of the first fabric so that it is recessed inwards to form at least one first trench, wherein the at least one wire further presses on the at least one second wire arrangement region so that it is recessed inwards to form at least one second trench, wherein the at least one first trench and the at least one second trench together form at least one hollow section, wherein the at least one wire stretches the first warp threads on two sides of the at least one first wire arrangement region towards the outside and wherein the at least one wire stretches the second warp threads on two sides of the at least one second wire arrangement region towards the outside so that the at least one wire directly enters the at least one hollow section;wherein the first wave structures, the first pre-formed region with a center hole and the at least one first wire arrangement region are formed with a first fabric, the second wave structures, the second pre-formed region with a center hole and the at least one second wire arrangement region are formed with a second fabric, the first fabric being joined to the second fabric and formed with a main body, the at least one wire extending in the at least one hollow portion and two ends of the at least one wire each having the inner edges and; Outer edges of the first fabric and the second fabric penetrate, so that the main body and the at least one wire are formed with a wire damper; wherein the first wave structures are successive or are arranged sequentially from an outer edge of the first fabric to the first preformed region with a center hole, wherein each first wave structure has a first wave crest, a first wave trough, a first inner sidewall, and a first outer sidewall, wherein the at least one first wire arrangement region extends radially from the outer edge of the first fabric through the first wave structures to the first preformed region with a center hole, wherein the second wave structures are arranged sequentially from an outer edge of the second fabric to the second preformed region with a center hole, wherein each second wave structure has a second wave crest, a second wave trough, a second inner sidewall, and a second outer sidewall,wherein the at least one second wire arrangement region extends radially from the outer edge of the second fabric through the second wave structures to the second preformed region with a center hole; wherein, after the at least one wire stretches the first warp threads on two sides of the at least one first wire arrangement region toward the outer sides, a first lower elastic adjustment region is formed between a first warp thread closest to the outer side of a first side of the at least one first wire arrangement region and a first warp thread on the inner side of the at least one first wire arrangement region, wherein a second lower elastic adjustment region is formed between a first warp thread closest to the outer side of a second side of the at least one first wire arrangement region and a first warp thread on the inner side of the at least one first wire arrangement region,wherein the widths of the first lower elastic adjustment region and the second lower elastic adjustment region are equal to each other and the distances between the remaining first warp threads are smaller than the width of the first lower elastic adjustment region and the second lower elastic adjustment region;, wherein, after the at least one wire stretches the second warp threads on two sides of the at least one second wire arrangement region toward the outer sides, a first upper elastic adjustment region is formed between a second warp thread closest to the outer side of a first side of the at least one second wire arrangement region and a second warp thread on the inner side of the at least one second wire arrangement region, wherein a second upper elastic adjustment region is formed between a second warp thread closest to the outer side of a second side of the at least one second wire arrangement region and a second warp thread on the inner side of the at least one second wire arrangement region,wherein the widths of the first upper elastic adjustment region and the second upper elastic adjustment region are equal to each other, and wherein the distances between the remaining second warp threads are smaller than the widths of the first upper elastic adjustment region and the second upper elastic adjustment region; and wherein, after the at least one wire stretches the first warp threads on two sides of the at least one first wire arrangement region toward the outer sides, and after the at least one wire stretches the second warp threads on two sides of the at least one second wire arrangement region toward the outer sides, a depth of the at least one first trench at the first wave crests is smaller than a depth of the at least one second trench at the second wave crests, wherein a depth of the at least one first trench at the first wave troughs is greater than a depth of the at least one second trench at the second wave troughs,wherein a depth of the at least one first trench on the first inner sidewalls is equal to a depth of the at least one second trench on the second inner sidewalls, wherein a depth of the at least one first trench on the first outer sidewalls is equal to a depth of the at least one second trench on the second outer sidewalls; a cutting step in which the wire damper or the centering spider is cut out of the base material and cutting out both the first preformed portion of the center hole and the second preformed portion of the center hole so that the wire damper is separated from the base material, the wire damper having a first center hole and a second center hole; and an assembly step in which a voice coil is movably arranged in a loudspeaker body, the first center hole and the second center hole of the wire damper or the centering spider are each sleeve-coupled to the voice coil, and the at least one wire of the wire damper or the centering spider is connected to the voice coil to assemble a loudspeaker. [4] The method of claim 3, wherein in the forming step, the depth of the at least one first trench at the first wave crests is equal to the depth of the at least one second trench at the second wave troughs, wherein the depth of the at least one second trench at the second wave crests is equal to the depth of the at least one first trench at the first wave troughs, wherein the depth of the at least one first trench at the first inner sidewalls is equal to the depth of the at least one first trench at the first outer sidewalls, and wherein the depth of the at least one second trench at the second inner sidewalls is equal to the depth of the at least one second trench at the second outer sidewalls. [5] A loudspeaker with a wire damper or a centering spider with locally adjustable elasticity, comprising: a loudspeaker body; a voice coil movably mounted in the loudspeaker body; and a wire damper or a centering spider, comprising: a main body in the form of a single-layer woven structure formed by weaving a plurality of warp threads and a plurality of weft threads, a solid resin layer being formed on a surface of the main body, the main body having a plurality of wave structures, a center hole, and at least one wire arrangement portion, the wave structures being arranged sequentially.are arranged sequentially from an outer edge of the main body to the center hole, each wave structure having a wave crest, a wave trough, an inner side wall, and an outer side wall, the center hole being sleeve-coupled to the voice coil, the at least one wire arrangement region extending radially from the outer edge of the main body through the wave structures to the center hole; the at least one wire arrangement region being recessed inwardly to form at least one hollow portion; a first elastic adjustment region being formed between a warp thread closest to the outer side of a first side of the at least one wire arrangement region and a warp thread on the inner side of the at least one wire arrangement region. wherein a second elastic adjustment region is formed between a warp thread closest to the outside of a second side of the at least one wire arrangement region and a warp thread on the inside of the at least one wire arrangement region, wherein the widths of the first elastic adjustment region and the second elastic adjustment region are equal to each other and wherein the distances between the remaining warp threads are smaller than the width of the first elastic adjustment region and the second elastic adjustment region; and wherein each of the depths of the at least one hollow portion at the inner sidewalls and the outer sidewalls is less than a depth of the at least one hollow portion at the wave crests, and wherein each of the depths of the at least one hollow portion at the inner sidewalls and the outer sidewalls is less than a depth of the at least one hollow portion at the wave troughs; and at least one wire extending in the at least one hollow portion, wherein two ends of the at least one wire each penetrate an inner edge and the outer edge of the main body, and one end of the at least one wire is connected to the voice coil. [6] The loudspeaker of claim 5, wherein the depth of the at least one hollow portion at the wave crests is equal to the depth of the at least one hollow portion at the wave troughs and the depth of the at least one hollow portion at the inner side walls is equal to the depth of the at least one hollow portion at the outer side walls. [7] A loudspeaker with a wire damper or a centering spider with locally adjustable elasticity, comprising: a loudspeaker body; a voice coil movably mounted in the loudspeaker body; and a wire damper or a centering spider, comprising: a main body in the form of a double-layered woven fabric structure comprising a first fabric and a second fabric, the first fabric being formed by weaving a plurality of first warp threads and a plurality of first weft threads, a first solid resin layer being formed on a surface of the first fabric, the first fabric having a plurality of first wave structures, a first center hole, and at least one first wire arrangement portion, the first wave structures being arranged sequentially.are arranged sequentially from an outer edge of the first fabric to the first center hole, wherein each first wave structure has a first wave crest, a first wave trough, a first inner side wall and a first outer side wall, wherein the at least one first wire arrangement region extends radially from the outer edge of the first fabric through the first wave structures to the first center hole, wherein the second fabric is formed by weaving a plurality of second warp threads and a plurality of second weft threads. wherein a second solid resin layer is formed on a surface of the second fabric, the second fabric having a plurality of second wave structures, a second center hole, and at least one second wire arrangement region, the second wave structures being sequentially arranged from an outer edge of the second fabric to the second center hole, each second wave structure having a second wave crest, a second wave trough, a second inner sidewall, and a second outer sidewall, the at least one second wire arrangement region extending radially from the outer edge of the second fabric through the second wave structures to the second center hole;wherein the first fabric is combined with the second fabric, and the at least one first wire arrangement region corresponds to the at least one second wire arrangement region, wherein the first center hole and the second center hole are sleeve-coupled to the voice coil; wherein the at least one first wire arrangement region is recessed inward to form at least one first trench, wherein the at least one second wire arrangement region is recessed inward to form at least one second trench, wherein the at least one first trench and the at least one second trench together form at least one hollow portion;wherein a first lower elastic adjustment region is formed between a first warp thread closest to the outside of a first side of the at least one first wire arrangement region and a first warp thread on the inside of the at least one first wire arrangement region, wherein a second lower elastic adjustment region is formed between a first warp thread closest to the outside of a second side of the at least one first wire arrangement region and a first warp thread on the inside of the at least one first wire arrangement region, wherein the widths of the first lower elastic adjustment region and the second lower elastic adjustment region are equal to each other and the distances between the remaining first warp threads are smaller than the width of the first lower elastic adjustment region and; the second lower elastic adjustment range;wherein a first upper elastic adjustment region is formed between a second warp thread closest to the outside of a first side of the at least one second wire arrangement region and a second warp thread on the inside of the at least one second wire arrangement region, wherein a second upper elastic adjustment region is formed between a second warp thread closest to the outside of a second side of the at least one second wire arrangement region and a second warp thread on the inside of the at least one second wire arrangement region, wherein the widths of the first upper elastic adjustment region and the second upper elastic adjustment region are equal to each other and the distances between the remaining second warp threads are smaller than the width of the first upper elastic adjustment region and the second upper elastic adjustment region;and wherein a depth of the at least one first trench at the first wave crests is less than a depth of the at least one second trench at the second wave crests, wherein a depth of the at least one first trench at the first wave troughs is greater than a depth of the at least one second trench at the second wave troughs; wherein a depth of the at least one first trench on the first inner sidewalls is equal to a depth of the at least one second trench on the second inner sidewalls, wherein a depth of the at least one first trench on the first outer sidewalls is equal to a depth of the at least one second trench on the second outer sidewalls; and at least one wire extending in the at least one hollow portion, wherein two ends of the at least one wire penetrate the inner edges and the outer edges of the first fabric and the second fabric, respectively, and wherein one end of the at least one wire is connected to the voice coil. [8] The loudspeaker of claim 7, wherein the depth of the at least one first trench at the first wave crests is equal to the depth of the at least one second trench at the second wave troughs, wherein the depth of the at least one second trench at the second wave crests is equal to the depth of the at least one first trench at the first wave troughs, wherein the depth of the at least one first trench at the first inner sidewalls is equal to the depth of the at least one first trench at the first outer sidewalls, and wherein the depth of the at least one second trench at the second inner sidewalls is equal to the depth of the at least one second trench at the second outer sidewalls.

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