Loudspeaker

Abstract

Provided in the present invention is a loudspeaker, comprising a vibration system and a magnetic circuit system for driving the vibration system to vibrate and generate sound, wherein the vibration system comprises a voice diaphragm and a voice coil for driving the voice diaphragm to vibrate, the voice diaphragm comprises a diaphragm and a dome fixed to the diaphragm, the dome comprises a main body portion and a positioning portion bending and extending along an edge of the main body portion, and the positioning portion is configured to ensure concentricity when the diaphragm and the dome are integrally formed, thereby effectively improving the assembly accuracy and consistency of the loudspeaker, and enhancing the reliability of the loudspeaker.

Description

speaker Technical Field

[0001] This invention relates to the field of electroacoustic conversion, and more particularly to a loudspeaker. Background Technology

[0002] In recent years, with the rapid development of mobile communication technology, consumers have been using more and more mobile communication devices with voice functions, such as portable phones, handheld game consoles, laptops, laptops, multimedia players, and other devices that can communicate through public or private communication networks. As a playback device with voice function, the internal vibration system of the speaker is directly related to the reliability of the speaker.

[0003] In related technologies, the diaphragm and dome of the speaker module are directly fixed by gluing. The concentricity of the diaphragm and dome cannot be guaranteed. At the same time, the glue used for gluing is prone to insufficient glue or overflow, resulting in a large degree of speaker sway.

[0004] Therefore, it is necessary to provide a new type of loudspeaker to solve the above problems. Technical issues

[0005] The purpose of this invention is to provide a loudspeaker with high assembly precision and good stability. Technical solutions

[0006] The technical solution of the present invention is as follows: The present invention provides a loudspeaker, including a vibration system and a magnetic circuit system for driving the vibration system to vibrate and produce sound. The vibration system includes a diaphragm and a voice coil for driving the diaphragm to vibrate. The diaphragm includes a vibrating diaphragm and a dome fixed to the vibrating diaphragm. The dome includes a main body and a positioning part that bends and extends along the edge of the main body. The positioning part is used to ensure the concentricity of the vibrating diaphragm and the dome when they are integrally formed.

[0007] Preferably, the main body includes a pair of first sides, a pair of second sides disposed adjacent to the first sides, and an arcuate side that connects the first sides and the second sides in sequence.

[0008] Preferably, the positioning part is disposed on at least one of the first side, the second side, and the arc-shaped side.

[0009] Preferably, the ratio of the length of the positioning part extending along the edge of the main body to the perimeter of the main body is greater than 5% and less than or equal to 100%.

[0010] Preferably, the length of the bent extension of the positioning part is greater than 0.05 mm.

[0011] Preferably, the diaphragm includes a folded ring portion, a first fixing portion connected to the inner periphery of the folded ring portion, and a second fixing portion connected to the outer periphery of the folded ring portion. The main body portion is fixed to the first fixing portion, and the positioning portion is located at the junction of the folded ring portion and the first fixing portion.

[0012] Preferably, the integral molding process includes one of gluing, hot pressing, and injection molding.

[0013] Preferably, the magnetic circuit system includes a magnetic yoke, a main magnet disposed above the magnetic yoke, a secondary magnet disposed at a distance from the main magnet, a pole core disposed above the main magnet, and an upper clamping plate disposed above the secondary magnet surrounding the main magnet.

[0014] Preferably, the magnetic yoke includes a first protrusion extending towards the upper clamping plate, the first protrusion being fixed to the upper clamping plate, and the upper clamping plate includes a second protrusion extending towards the diaphragm, the second protrusion being fixed to the second fixing portion.

[0015] Preferably, the loudspeaker further includes an electrical connector disposed in the magnetic circuit system, the electrical connector being fixed to the upper clamping plate, and the voice coil being electrically connected to an external circuit through the electrical connector. Beneficial effects

[0016] The advantages of this invention are as follows: This invention provides a loudspeaker, including a diaphragm and a dome integrally formed with the diaphragm. The dome includes a main body and a positioning part that bends and extends along the edge of the main body. Compared with related technologies, the positioning part of this invention is used to ensure the concentricity of the diaphragm and the dome when they are integrally formed, effectively improving the assembly accuracy and consistency of the loudspeaker. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0018] Figure 1 is a three-dimensional structural diagram of the loudspeaker provided in an embodiment of the present invention;

[0019] Figure 2 is an exploded view of the loudspeaker shown in Figure 1;

[0020] Figure 3 is a three-dimensional structural diagram of the diaphragm of the loudspeaker shown in Figure 1;

[0021] Figure 4 is a cross-sectional view of the loudspeaker shown in Figure 1 along line AA. Embodiments of the present invention

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please refer to Figures 1-4 at the same time. The present invention provides a loudspeaker 100, including a vibration system 1 and a magnetic circuit system 2 for driving the vibration system 1 to vibrate and produce sound.

[0024] The vibration system 1 includes a diaphragm 11 and a voice coil 12 that drives the diaphragm 11 to vibrate. The diaphragm 11 includes a diaphragm 111 and a dome 112 fixed to the diaphragm 111. The diaphragm 111 includes a folded ring portion 1111, a first fixing portion 1112 connected to the inner periphery of the folded ring portion 1111, and a second fixing portion 1113 connected to the outer periphery of the folded ring portion 1111. The dome 112 is fixed to the first fixing portion 1112.

[0025] The dome 112 includes a main body 1121 and a positioning part 1122 that bends and extends along the edge of the main body 1121. The positioning part 1122 is used to ensure the concentricity of the diaphragm 111 and the dome 112 when they are integrally formed. The bending and extending length of the positioning part 1122 is greater than 0.05 mm. In this embodiment, preferably, the bending and extending length of the positioning part 1122 is 0.4 mm.

[0026] The main body 1121 is fixed to the first fixing part 1112. The main body 1121 includes a pair of first sides 1123, a pair of second sides 1124 adjacent to the first sides 1123, and an arc-shaped side 1125 connecting the first sides 1123 and the second sides 1124 in sequence. The positioning part 1122 is disposed on at least one of the first sides 1123, the second sides 1124, and the arc-shaped side 1125. Preferably, in this embodiment, the positioning part 1122 is disposed on four sides of the arc-shaped side 1125.

[0027] The positioning part 1122 is located at the junction of the folded ring part 1111 and the first fixing part 1112. The ratio of the length of the positioning part 1122 extending along the edge of the main body part 1121 to the circumference of the main body part 1121 is greater than 5% and less than or equal to 100%. In this embodiment, preferably, the ratio of the length of the positioning part 1122 extending along the edge of the main body part 1121 to the circumference of the main body part 1121 is 20.9%.

[0028] The integral molding process includes one of gluing, hot pressing and injection molding. In this embodiment, preferably, the diaphragm 111 and the dome 112 are glued and fixed in an integral molding manner.

[0029] The positioning part 1122 is configured to cooperate with the recessed part of the diaphragm mold when the diaphragm 111 and the dome 112 are integrally formed, ensuring the concentricity of the diaphragm 111 and the dome 112. At the same time, when the diaphragm 111 and the dome 112 are glued and fixed, the better concentricity of the diaphragm 111 and the dome 112 reduces the amount of glue used for gluing. In addition, the preferred material for gluing is an adhesive, and the gluing method is to spray a thin layer on the surface of the material, avoiding insufficient glue and excess glue. Since the hot pressing and injection molding in the integral forming process do not require glue and adhesive, there is no situation of insufficient glue and excess glue, effectively improving the assembly accuracy and consistency of the speaker.

[0030] The magnetic circuit system 2 includes a magnetic yoke 21, a main magnet 22 disposed above the magnetic yoke 21, a secondary magnet 23 spaced apart from the main magnet 22, a pole core 24 attached above the main magnet 22, and an upper clamping plate 25 surrounding the main magnet 22 and attached above the secondary magnet 23. The main magnet 22 and the secondary magnet 23 form a magnetic gap 10. The voice coil 12 partially extends into the magnetic gap 10. The second fixing part 1113 is fixed to the upper clamping plate 25.

[0031] The magnetic yoke 21 includes a first protrusion 211 that bends and extends toward the upper clamping plate 25. The first protrusion 211 is fixed to the upper clamping plate 25 and is used to limit the position of the auxiliary magnet 23.

[0032] The upper clamping plate 25 includes a second protrusion 251 that bends and extends toward the diaphragm 11. The second protrusion 251 is fixed to the second fixing part 1113. The second protrusion 251 includes a top 2511 and a side wall 2512 that are simultaneously fixed to the second fixing part 1113 to ensure the stability of the speaker.

[0033] The loudspeaker 100 also includes an electrical connector 3 disposed on the magnetic circuit system 2. The electrical connector 3 is fixed to the upper clamping plate 25. The voice coil 12 is electrically connected to an external circuit through the electrical connector 3. The first protrusion 211 is provided with a clearance portion 2111 that avoids the electrical connector 3.

[0034] Compared with related technologies, the present invention provides a loudspeaker, including a vibration system and a magnetic circuit system for driving the vibration system to vibrate and produce sound. The vibration system includes a diaphragm and a voice coil for driving the diaphragm to vibrate. The diaphragm includes a vibrating membrane and a dome fixed to the vibrating membrane. The dome includes a main body and a positioning part that bends and extends along the edge of the main body. The positioning part is used to ensure the concentricity of the vibrating membrane and the dome when they are integrally formed. The present invention provides a positioning part at the edge of the dome, which effectively improves the assembly accuracy and consistency of the loudspeaker and enhances the reliability of the loudspeaker.

[0035] The above description is merely an embodiment of the present invention. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of the present invention, but these improvements all fall within the protection scope of the present invention.

Claims

1. A loudspeaker, comprising a vibration system and a magnetic circuit system for driving the vibration system to vibrate and generate sound, the vibration system comprising a diaphragm and a voice coil for driving the diaphragm to vibrate, the diaphragm comprising a resonant diaphragm and a dome fixed to the resonant diaphragm, characterized in that, The dome includes a main body and a positioning part that bends and extends along the edge of the main body. The positioning part is used to ensure the concentricity of the diaphragm and the dome when they are integrally formed.

2. The loudspeaker according to claim 1, characterized in that, The main body includes a pair of first sides, a pair of second sides adjacent to the first sides, and an arc-shaped side that connects the first sides and the second sides in sequence.

3. The loudspeaker according to claim 2, characterized in that, The positioning part is disposed on at least one of the first side, the second side, and the arc-shaped side.

4. The loudspeaker according to claim 1, characterized in that, The ratio of the length of the positioning part extending along the edge of the main body to the perimeter of the main body is greater than 5% and less than or equal to 100%.

5. The loudspeaker according to claim 1, characterized in that, The length of the bent extension of the positioning part is greater than 0.05 mm.

6. The loudspeaker according to claim 1, characterized in that, The diaphragm includes a folded ring portion, a first fixing portion connected to the inner periphery of the folded ring portion, and a second fixing portion connected to the outer periphery of the folded ring portion. The main body portion is fixed to the first fixing portion, and the positioning portion is located at the junction of the folded ring portion and the first fixing portion.

7. The loudspeaker according to claim 1, characterized in that, The integral molding process includes one of gluing, hot pressing, and injection molding.

8. The loudspeaker according to claim 6, characterized in that, The magnetic circuit system includes a magnetic yoke, a main magnet disposed above the magnetic yoke, a secondary magnet disposed at a distance from the main magnet, a pole core disposed above the main magnet, and an upper clamping plate disposed above the secondary magnet surrounding the main magnet.

9. The loudspeaker according to claim 8, characterized in that, The magnetic yoke includes a first protrusion that bends and extends toward the upper clamping plate, the first protrusion being fixed to the upper clamping plate. The upper clamping plate includes a second protrusion that bends and extends toward the diaphragm, the second protrusion being fixed to the second fixing portion.

10. The loudspeaker according to claim 8, characterized in that, The loudspeaker also includes an electrical connector disposed in the magnetic circuit system, the electrical connector being fixed to the upper clamping plate, and the voice coil being electrically connected to an external circuit through the electrical connector.

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