SPEAKERS

Abstract

A loudspeaker comprising a frame (1), a cone paper (2) and a magnetic structure, characterized in that the cone paper (2) has a body (21) at its edge which, in a side section view of the loudspeaker, has a Y-structure forming an upper arm and a lower arm, each extending from the edge of the body (21), wherein an upper edge (22) is attached to the top of the upper arm and a lower edge (23) is attached to the underside of the lower arm; and wherein the upper edge (22) and the lower edge (23) project upwards and downwards respectively and form a symmetrical structure in the side view.

Description

TECHNICAL AREA

[0001] The invention relates to the technical field of loudspeakers, in particular to a loudspeaker with a symmetrical dual-edge (engl. “symmetrical dual-edge loudspeaker”). BACKGROUND

[0002] A conventional loudspeaker typically comprises a frame, a cone paper, a voice coil, a damper, and a magnetic array; and an associated suspension system consists mainly of a cone edge and a damper combination. Such a design can better ensure that the cone paper does not move back and forth too easily during up and down movements, can avoid the undesirable phenomenon caused by anomalous noise, and can greatly improve product stability.

[0003] The damper design is not used in the construction of mini loudspeakers. Instead, a magnetic solution is injected into a gap between magnets to stabilize the center of the voice coil and achieve high product stability.

[0004] Assuming that BL (a driving force parameter) must be satisfied, the space available for constructing an edge and damper is limited in an ultrathin loudspeaker. If a conventional suspension structure is used, the stiffness coefficient, Kms, cannot achieve optimal symmetry.

[0005] It is therefore necessary to optimize the existing loudspeaker structure to enable it to meet the application requirements for an ultra-thin loudspeaker.

[0006] CN 2 05 092 965 U discloses a symmetrical thin folded-ring loudspeaker comprising a cone and a folded ring, wherein the folded ring includes a first folded ring and a second folded ring arranged on both sides of the cone. The first folded ring and the second folded ring are completely symmetrical, such that the moment generated by both is of the same magnitude and the amplitude of the upward and downward oscillation of the cone is the same.

[0007] Further related prior art is specified in the publications CN 1 05 307 089 A, US 2016 / 0 118 032 A1, US 2016 / 0 119 717 A1, WO 2017 / 149 984 A1, WO 2013 / 144 597 A1, CN 2 05 793 278 U, and CN 1 05 721 992 A. SUMMARY OF THE INVENTION

[0008] The problem underlying the invention is solved by a loudspeaker with the features of independent claim 1. Advantageous embodiments of the invention are specified in dependent claims 2 to 10. The loudspeaker can effectively improve the vibration efficiency of the cone paper by providing symmetrical upper and lower edges.

[0009] As a further description of the technical solution of the invention, the position on the lower edge where the air outlet hole is located has the following: a side adjacent to the body, the middle of the lower edge and a side adjacent to the frame.

[0010] As a further description of the technical solution of the invention, the body is an integrated structure or a split structure.

[0011] As a further description of the technical solution of the invention, the frame has an upper frame area and a lower frame area; the upper corner, the lower corner and the upper frame area are formed integrally. Thus, the size of the loudspeaker can be reduced.

[0012] As a further description of the technical solution of the invention, the U-shaped magnet has a divided structure comprising an edge region and a central region; the edge region and the lower frame region are integrally manufactured using an injection molding process.

[0013] As a further description of the technical solution of the invention, the shape of the upper edge and the lower edge is a ring, a triangle, a square or a polygon.

[0014] The invention achieves the following technical effects with the technical solution described above: The invention effectively ensures a continuous up-and-down movement of the conical paper within a limited suspension space by arranging symmetrical upper and lower edges, and allows the stiffness coefficient, Kms, to achieve optimal symmetry. This fulfills an application requirement for an ultra-thin loudspeaker. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 is a structural sectional view of the loudspeaker with a symmetrical double edge according to an embodiment of the present invention; Fig. Figure 2 is a section view of the loudspeaker with a symmetrical double edge according to an embodiment of the invention; Fig. Figure 3 is a structural schematic view of the air outlet hole according to the invention, which is arranged at the lower edge; Fig. Figure 4 is a vertical view of the loudspeaker with a symmetrical double edge according to an embodiment of the invention; Fig. Figure 5 is a structural sectional view of the loudspeaker with a symmetrical double edge according to a further embodiment of the invention; Fig. Figure 6 is a Kms curve diagram of a GBS loudspeaker and the loudspeaker with a symmetrical double edge; and Fig. Figure 7 is a THD comparison curve diagram of the GBS loudspeaker and the symmetrical double-edge loudspeaker. DETAILED DESCRIPTION OF THE EXECUTION FORMS

[0015] To facilitate understanding of the invention, it is described in detail below in conjunction with the drawings and specific embodiments. The drawings illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described here. On the contrary, the embodiments are provided to facilitate a more thorough and comprehensive understanding of the invention's disclosures.

[0016] It should be noted that if an element is "attached" to another element, the element may be attached directly to the other element or to an intermediate element; and if an element is "connected" to another element, the element may be connected directly to the other element or to an intermediate element.

[0017] To simplify reading, the local terms “upper”, “lower”, “left” and “right” are used as shown in the drawings to indicate reference relative positions of various elements, but not to limit the present application.

[0018] Unless otherwise defined, all technical and scientific terms used in this text have the same meanings as they are generally understood by a person skilled in the art. Expressions used in the disclosure of the invention are employed in this text only to describe specific embodiments and are not intended to limit the invention. Design 1

[0019] Fig. 1, Fig. 2 and Fig. Figure 4 shows a structural sectional view, a section view, or a vertical view of the symmetrical dual-edge loudspeaker according to the invention; Fig. Figure 3 shows a schematic structural view of the air outlet hole according to the invention, which is arranged at the lower edge 15. In conjunction with the Fig. References 1 to 4 specify the following: a loudspeaker, in particular a loudspeaker with a symmetrical double edge, comprising: a frame 1, a conical paper 2, a U-shaped magnet 3, and a voice coil 4, wherein the conical paper 2, the U-shaped magnet 3, and the voice coil 4 are mounted in the frame 1, which provides support; a housing chamber is formed in the center of the U-shaped magnet 3; the voice coil 4 is located in the housing chamber. A magnetic arrangement 5, comprising a steel magnet and a spring washer, is placed in the center of the U-shaped magnet; the voice coil 4 is located between the U-shaped magnet 3 and the magnetic arrangement.

[0020] For the loudspeaker's vibration structure, the cone paper 2 preferably has a body 21 in the center, as well as an upper edge 22 and a lower edge 23 bonded to the upper and lower sides of the body 21, respectively. The upper edge 22 and the lower edge 23 are located on an edge of the body 21; the upper edge 22 projects upwards and generally away from the magnetic arrangement, with one end of its projections bonded to the upper side of the body 21; the lower edge 23 projects downwards, generally towards the magnetic arrangement, with one end of its projections bonded to the lower side of the body 21. In the embodiment with the optimized edge structure design, the upper edge 22 and the lower edge 23 form a structure that is symmetrical both upwards and downwards.Therefore, the vibration efficiency of the cone paper 2 is effectively improved and it can be ensured that the stiffness coefficient, Kms, achieves optimal symmetry.

[0021] The shape of the upper edge 22 and the lower edge 23 is a ring, a triangle, a square, or a polygon and can be adapted to the shape of the loudspeaker. In this embodiment, the upper edge 22 and the lower edge 23 are designed to have a protruding ring structure. The other ends of the upper edge 22 and the lower edge 23 are each firmly connected to the frame 1 to connect the conical paper 2 to the frame.

[0022] As in Fig. As shown in Figure 3, the lower edge 23 is equipped with one or more air outlet holes 231. In this embodiment, the lower edge 23 is equipped with one or more air outlet holes 231 at one or more of the following positions: an air outlet hole 231A located on a side adjacent to the body 21; an air outlet hole 231B located in the center of the lower side of the lower corner; and an air outlet hole 231C located on a side away from the body 21.

[0023] The cone paper 2 and the body 21 can be manufactured as an integrated structure or a split structure, depending on the process requirements. In this embodiment, the body 21 is a split structure. Design 2

[0024] Fig. Figure 5 shows a structural sectional view of the loudspeaker with a symmetrical double edge according to a further embodiment of the invention. As in Fig. As shown in Figure 5, the body 21 of the loudspeaker is an integrated structure, with Y-shaped bonding surfaces extending from its edges to bond the upper edge and the lower edge.

[0025] The frame 1 has an upper frame area 11 and a lower frame area 12, wherein the upper edge 22, the lower edge 23 and the upper frame area 11 are integrally formed and are in contact with each other at the lateral surfaces of the edges. Thus, the size of the loudspeaker can be reduced.

[0026] The U-shaped magnet can also be in a split structure, comprising an edge region 31 and a central region 32, with the edge region 31 and the lower frame region 12 being integrally manufactured by injection molding. The edge region 31 is then positioned within the central region 32. This results in improvements during the assembly process.

[0027] The stiffness coefficient, Kms, and the total harmonic distortion (THD) parameter of a conventional GBS loudspeaker (3.5 IN) and of the loudspeaker with a symmetrical double edge according to the invention, as illustrated in the preceding embodiments, were each tested. The results are presented in Fig. Figure 6 shows a Kms curve diagram of the GBS loudspeaker and the symmetrical double-edged loudspeaker; Fig. Figure 7 shows a THD comparison curve diagram of the GBS loudspeaker and the loudspeaker with symmetrical double edge.

[0028] From the Fig. 6 and Fig. Figure 7 shows that the loudspeakers with symmetrical double edges, according to the concepts of the invention, each exhibit an exceptionally symmetrical signal parameter, Kms. This fully reflects the fact that the loudspeaker has a very good up / down movement function. Regarding the THD parameter, the THD of the loudspeaker with symmetrical double edges is also in the range of 30-70 Hz, which is obviously lower than that of the GBS loudspeaker with a damper.

[0029] In summary, the invention effectively ensures the continuous up-and-down movement of the conical paper within a limited suspension space by arranging symmetrical upper and lower edges, and allows the stiffness coefficient, Kms, to achieve optimal symmetry. This fulfills an application requirement for an ultra-thin loudspeaker.

[0030] The foregoing content merely provides examples and illustrations of the structure of the invention; however, due to its specific and detailed description, it should not be considered a limitation of the scope of protection of the patent. It should be emphasized that a person skilled in the art could make various modifications and improvements without deviating from the concept of the invention. And all obvious substitutions are included within the scope of protection of the invention.

Claims

[1] Loudspeaker comprising a frame (1), a cone paper (2) and a magnetic structure and which characterized by is that the cone paper (2) has a body (21) at its edge which, in a side section view of the loudspeaker, has a Y-structure forming an upper arm and a lower arm, each extending from the edge of the body (21), with an upper edge (22) attached to the top of the upper arm and a lower edge (23) attached to the underside of the lower arm; and wherein the upper edge (22) and the lower edge (23) project upwards and downwards respectively, forming a symmetrical structure in the side view. [2] Loudspeaker according to claim 1, wherein the cone paper (2) is firmly connected to the frame (1) via the upper edge (22) and the lower edge (23). [3] Loudspeaker according to claims 1 to 2, wherein the lower edge (23) is equipped with one or more air outlet holes (231). [4] Loudspeaker according to claim 3, characterized by , that the position on the lower edge (23) where the one or more air outlet holes (231) are arranged has one or more of the following: a) a side adjacent to the body (21), b) the center of the lower edge and c) a side adjacent to the frame (1). [5] Loudspeakers according to any one of the preceding claims, characterized by , that the frame (1) has an upper frame area (11) and a lower frame area (12); wherein the upper edge (22), the lower edge (23) and the upper frame area (11) are integrally formed. [6] Loudspeaker according to one of the preceding claims, wherein the magnetic structure comprises a U-shaped magnet (3) and a voice coil (4) which are mounted in the frame (1), wherein a housing chamber is formed in the center of the U-shaped magnet (3); wherein the voice coil (4) is located in the housing chamber. [7] Loudspeaker according to claim 6, characterized by , that the U-shaped magnet (3) has a split structure comprising an edge region (31) and a central region (32); wherein the edge region (31) and the lower frame region (12) are integrally manufactured in an injection molding process. [8] Loudspeakers according to any one of the preceding claims, characterized by , that when viewed from above, the shape of the upper edge (22) and the lower edge (23) is a ring, a triangle, a square or a polygon. [9] Loudspeaker according to any one of claims 1 to 8, characterized by, that the body (21) has an integrated structure. [10] Loudspeaker according to any one of claims 1 to 8, characterized by , that the body (21) has a divided structure.

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