A folded ring and fixed core support sheet for a loudspeaker

Abstract

The application discloses a folded ring and a fixed-core sheet for a loudspeaker, which comprises a folded ring and a fixed-core sheet, and the folded ring and the fixed-core sheet are both composite materials, and each comprises a center net and a glue layer; the center net is a fiber fabric, the fiber fabric is interwoven with a hollow grid, the glue layer fills the hollow grid and wraps the center net; the fixed-core sheet is a porous structure, and pores are uniformly distributed on the surface of the fixed-core sheet; the pores are provided with multiple circles from the inner edge to the outer edge of the fixed-core sheet; a port of one end of the pores is provided with a convex edge; the convex edges of the same circle layer have the same protruding direction, and the convex edges of adjacent circle layers have opposite protruding directions; the fixed-core sheet is hollowed into multiple corrugated segments through a large through hole. The liquid glue layer is distributed on the upper and lower surfaces of the center net fiber, fills the hollow grid and is wrapped and combined, the folded ring and the fixed-core sheet have good flexibility and fatigue resistance, are thin in thickness, light in weight and high in strength, the design of the pores and the convex edges reduces the weight, makes the surface of the fixed-core sheet evenly radiate heat and is not prone to local fracture.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of loudspeakers, and particularly relates to a folded ring and a fixed-core sheet for a loudspeaker. BACKGROUND

[0002] A conventional moving-coil loudspeaker comprises a magnetic circuit system and a vibration system, which is composed of a voice coil, a fixed-core sheet and a folded ring. The conventional multimedia loudspeaker is generally made of a single material such as rubber, cloth, PU or silica gel, and the fixed-core sheet is also made of a single material such as cloth, Kapton or PEN plastic.

[0003] In order to ensure high sensitivity of the loudspeaker, the folded ring and the fixed-core sheet are usually thin, so that the vibration mass of the loudspeaker can be light. However, the thin folded ring and fixed-core sheet are prone to breakage under high power. In addition, the fixed-core sheet of the loudspeaker generates heat during long-time operation, which reduces the service life and performance of the loudspeaker, and uneven heat dissipation on the fixed-core sheet can easily cause local breakage. SUMMARY

[0004] The present application aims to provide a folded ring and a fixed-core sheet for a loudspeaker to solve the problems in the background.

[0005] To achieve the above object, the present application provides the following technical scheme: a folded ring and a fixed-core sheet for a loudspeaker, comprising a folded ring and a fixed-core sheet, the longitudinal section of the folded ring and the fixed-core sheet is corrugated, the inner edge and the outer edge of the folded ring and the fixed-core sheet are annular, the folded ring and the fixed-core sheet are sleeved with a voice coil skeleton, the inner edge of the folded ring is fixedly connected with the top end of the voice coil skeleton through a center glue, and the inner edge of the fixed-core sheet is fixedly connected with the bottom end of the voice coil skeleton through a center glue two; the folded ring and the fixed-core sheet are made of a composite material, the composite material comprises a center net and a glue layer, the center net is a fiber fabric, the fiber fabric is interwoven with uniformly distributed hollow grids, and the glue layer fills the hollow grids and wraps the center net; the fixed-core sheet has a porous structure, and pores penetrating through the top surface and the bottom surface are uniformly distributed on the surface, the pores are provided with multiple turns from the inner edge to the outer edge of the fixed-core sheet, one end of the pores is provided with a convex edge with a convex surface, the convex edges of the same turn have the same convex direction, and the convex edges of adjacent turns have opposite convex directions; the inner edge and the outer edge of the fixed-core sheet are hollow structures, and the hollow structures are formed into multiple corrugated segments through large through holes.

[0006] Preferably, the glue layer is provided with two layers, the center net is clamped between the two layers, the inner side of the glue layer is provided with protrusions corresponding to the hollow grids, the sum of the heights of the protrusions on the two layers of the glue layer is adapted to the hollow grids, and the two layers of the glue layer and the center net are vulcanized and formed to be composite.

[0007] Preferably, the air hole is an elliptical structure.

[0008] Preferably, the middle of the corrugated section is provided with a small hole, and the small hole is an angular structure.

[0009] Preferably, the corrugated section and the inner and outer edges of the core support sheet are connected by an arc-shaped transition structure.

[0010] Preferably, the convex edge is an angular structure.

[0011] Compared with the prior art, the present application has the following advantages: 1. The liquid adhesive layer is distributed on the upper and lower surfaces of the center fiber and then wrapped to fill the hollow grid, and the folding ring and the core support sheet have good flexibility and fatigue resistance, supporting the design of high power and large stroke of the loudspeaker, and taking into account the thin thickness and light weight of the folding ring and the core support sheet, and ensuring the strength.

[0012] 2. The porous structure can further reduce the weight of the core support sheet, and is also beneficial to heat dissipation.

[0013] 3. The air hole is beneficial to the dispersion and flow of air on the surface of the core support sheet between the gaps of the convex edges, and the design of the same convex edge of the same layer and the opposite convex edge of the adjacent layer is beneficial to the formation of convection on the top surface and the bottom surface, so that the surface of the core support sheet is evenly cooled and is not easy to cause local fracture.

[0014] 4. The design of the large hole and the small hole can further reduce the weight.

[0015] 5. The design of the air hole, the large hole, the small hole, the arc-shaped transition structure and the convex edge without angular structure can reduce stress concentration and enhance strength. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the front view of the structure of the present application; Figure 2 is a schematic diagram of the partial center net, adhesive layer and hollow grid of the present application; Figure 3 is a schematic diagram of the core support sheet, large hole, corrugated section, small hole and arc-shaped transition structure of the present application; Figure 4 is a schematic diagram of the top surface structure of the partial core support sheet of the present application; Figure 5 is a schematic diagram of the bottom surface structure of the partial core support sheet of the present application; Figure 6 is a schematic diagram of the cross-sectional structure of the partial core support sheet of the present application.

[0017] In the figure: 1, folding ring; 2, fixed core branch; 3, voice coil skeleton; 4, center glue one; 5, center glue two; 6, center net; 7, glue layer; 8, hollow grid; 9, air hole; 10, convex edge; 11, large through hole; 12, corrugated section; 13, protrusion; 14, small through hole; 15, arc transition structure. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0019] Please refer to Figures 1-6The application provides a folded ring and a fixed core support sheet for a loudspeaker, which comprises a folded ring 1 and a fixed core support sheet 2, the longitudinal section of the folded ring 1 and the fixed core support sheet 2 is corrugated, the inner edge and the outer edge of the folded ring 1 and the fixed core support sheet 2 are annular, the folded ring 1 and the fixed core support sheet 2 are sleeved with a voice coil former 3, the inner edge of the folded ring 1 is fixedly connected with the top end of the voice coil former 3 through center glue 4, the inner edge of the fixed core support sheet 2 is fixedly connected with the bottom end of the voice coil former 3 through center glue 2, the corrugated folded ring 1 and the fixed core support sheet 2 are used for the axial vibration and the fixed core of the voice coil former 3, the folded ring 1 and the fixed core support sheet 2 are made of a composite material, the composite material comprises a center net 6 and a glue layer 7, the center net 6 is a fiber fabric, the fiber fabric is interwoven with uniformly distributed hollow grids 8, the glue layer 7 fills the hollow grids 8 and wraps the center net 6 for composite, the glue layer is distributed on the upper and lower surfaces of the center net fiber and then is wrapped for composite, the hollow grids are filled, the folded ring and the fixed core support sheet have good flexibility and fatigue resistance, support the loudspeaker high-power and large-stroke design, and give consideration to the thin thickness and light weight of the folded ring and the fixed core support sheet, and ensure the strength, the fixed core support sheet 2 is a porous structure, the porous structure can further reduce the weight of the fixed core support sheet 2 and is beneficial to heat dissipation, air holes 9 are uniformly distributed on the surface and penetrate the top surface and the bottom surface, a plurality of circles of the air holes 9 are arranged from the inner edge to the outer edge of the fixed core support sheet 2, one end of the air hole 9 is provided with a convex edge 10 with a convex surface, the convex edges 10 of the same circle layer have the same convex direction, the convex edges 10 of adjacent circle layers have opposite convex directions, the air flow on the surface of the fixed core support sheet 2 is blocked by the convex edges 10 and flows in the gaps between the convex edges 10 on the surface, the uniform heat dissipation of the single surface is realized, the convex edges 10 of the same circle layer have the same convex direction and the convex edges 10 of adjacent circle layers have opposite convex directions, the air flow is uniformly dispersed between the convex edges 10 of the single surface and flows to the opposite surface through the air holes 9 without convex, so the air flow is circulated, which is beneficial to the uniform convection between the top surface and the bottom surface and realizes the uniform heat dissipation between the double surfaces, the overall surface of the fixed core support sheet 2 is uniformly heat-dissipated and is not easy to cause local fracture, the inner edge and the outer edge of the fixed core support sheet 2 are hollow structures, a plurality of corrugated segments 12 are formed by the hollow large holes 11, and the design of the large holes 11 can further reduce the weight of the fixed core support sheet 2.

[0020] Please refer to Figure 2 The glue layer 7 is provided with two layers, the center net 6 is clamped between the two layers, the inner side of the glue layer 7 is provided with convexes 13 corresponding to the hollow grids 8, the sum of the heights of the convexes 13 on the two layers of the glue layer 7 is adapted to the hollow grids 8, and the two layers of the glue layer 7 and the center net 6 are vulcanized and formed for composite, in the embodiment, the liquid glue layer is distributed on the upper and lower surfaces of the center net 6 fiber and then is wrapped for composite, the hollow grids 8 are filled, the folded ring 1 and the fixed core support sheet 2 have good flexibility and fatigue resistance, support the loudspeaker high-power and large-stroke design, give consideration to the thin thickness and light weight of the folded ring 1 and the fixed core support sheet 2, and ensure the strength.

[0021] Please refer to Figures 4-5 , the air hole 9 is an oval structure; in this embodiment, stress concentration at the air hole 9 is avoided, and the arc-shaped outer edge facilitates air flow dispersion.

[0022] Please refer to Figure 3 , the middle of the corrugated section 12 is provided with a small through hole 14, which is an edgeless structure; in this embodiment, the weight of the corrugated section 12 is reduced, and stress concentration is reduced.

[0023] Please refer to Figure 3 , the corrugated section 12 and the inner and outer edges of the fixed-core branch 2 are connected by arc-shaped transition structures 15; in this embodiment, stress concentration at the connection between the corrugated section 12 and the inner and outer edges of the fixed-core branch 2 is reduced.

[0024] Please refer to Figure 6 , the convex edge 10 is an edgeless structure; in this embodiment, stress concentration of the convex edge 10 is reduced, and the strength is enhanced.

[0025] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A loudspeaker, characterized in that, The device includes a folded ring (1) and a core support plate (2). The longitudinal sections of both the folded ring (1) and the core support plate (2) are corrugated. The inner and outer edges of both the folded ring (1) and the core support plate (2) are annular. A voice coil skeleton (3) is fitted inside the folded ring (1) and the core support plate (2). The inner edge of the folded ring (1) is fixedly connected to the top of the voice coil skeleton (3) by a central adhesive (4), and the inner edge of the core support plate (2) is fixedly connected to the bottom of the voice coil skeleton (3) by a central adhesive (5). Both the folded ring (1) and the core support plate (2) are made of composite materials. The composite material includes a central mesh (6) and an adhesive layer (7). The central mesh (6) is a fiber fabric, and the fiber fabric is interwoven. The core support plate (2) is woven with a uniformly distributed hollow grid (8), and the adhesive layer (7) fills the hollow grid (8) and wraps the central grid (6) in a composite manner; the core support plate (2) is a porous structure with pores (9) evenly distributed on its surface, penetrating its top and bottom surfaces. The pores (9) are arranged in multiple rings from the inner edge to the outer edge of the core support plate (2). One end of the pore (9) is provided with a protruding edge (10) along the protruding surface. The protruding edges (10) of the same ring layer are protruding in the same direction, and the protruding edges (10) of adjacent ring layers are protruding in opposite directions; the core support plate (2) has a hollow structure between its inner edge and outer edge, which is hollowed out into multiple corrugated segments (12) through a large through hole (11). A small through hole (14) is provided in the middle of the corrugated segment (12).

2. A loudspeaker according to claim 1, characterized in that, The adhesive layer (7) has two layers, and the central mesh (6) is sandwiched between the two layers. The inner side of the adhesive layer (7) has protrusions (13) corresponding to the hollow mesh (8), and the sum of the heights of the protrusions (13) on the two adhesive layers (7) is adapted to the hollow mesh (8). The two adhesive layers (7) and the central mesh (6) are vulcanized and composite.

3. A loudspeaker according to claim 1, characterized in that, The pores (9) are elliptical in structure.

4. A loudspeaker according to claim 1, characterized in that, The small through hole (14) has a non-angular structure.

5. A loudspeaker according to claim 1, characterized in that, The connection between the corrugated section (12) and the inner and outer edges of the core support plate (2) is an arc-shaped transition structure (15).

6. A loudspeaker according to claim 1, characterized in that, The convex edge (10) has a non-angular structure.

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