speaker

Abstract

The present invention provides a loudspeaker, comprising a vibration system and a magnetic circuit system for driving the vibration system to vibrate and produce sound, the vibration system comprising a sound membrane and a voice coil for driving the sound membrane to vibrate, the sound membrane comprising a diaphragm and a spherical top fixed to the diaphragm, the spherical top comprising a main body and a positioning portion extending along an edge of the main body, the positioning portion being used to ensure the concentricity of the diaphragm and the spherical top when they are integrally formed, thereby effectively improving the assembly accuracy and consistency of the loudspeaker and improving the reliability of the loudspeaker.

Description

Technical Field

[0001] The invention relates to the field of electroacoustic conversion, and in particular to a loudspeaker. Background Art

[0002] With the rapid development of mobile communication technology in recent years, consumers are increasingly using mobile communication devices with voice functions, such as portable phones, handheld game consoles, laptops, multimedia players and other devices that can communicate through public or private communication networks. Speakers are used as playback devices for voice functions, and their internal vibration system is directly related to the reliability of the speakers.

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

[0004] Therefore, it is necessary to provide a new speaker to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a loudspeaker with high assembly accuracy and good stability.

[0006] The technical solution of the present invention is as follows: The present invention provides a loudspeaker, comprising a vibration system and a magnetic circuit system for driving the vibration system to vibrate and produce sound, the vibration system comprising a sound membrane and a voice coil for driving the sound membrane to vibrate, the sound membrane comprising a diaphragm and a dome fixed to the diaphragm, the dome comprising a main body and a positioning portion bent and extended along the edge of the main body, the positioning portion being used to ensure the concentricity of the 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 arranged adjacent to the first sides, and arcuate sides sequentially connecting the first sides and the second sides.

[0008] Preferably, the positioning portion is provided 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 portion extending along the edge of the main body to the circumference of the main body is greater than 5% and less than or equal to 100%.

[0010] Preferably, the bending and extending length of the positioning portion is greater than 0.05 mm.

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

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

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

[0014] Preferably, the yoke includes a first protrusion extending and bending toward the upper clamping plate, the first protrusion is fixed to the upper clamping plate, the upper clamping plate includes a second protrusion extending and bending toward the sound membrane, the second protrusion is fixed to the second fixing portion.

[0015] Preferably, the speaker further comprises an electrical connector arranged on the magnetic circuit system, the electrical connector is fixed to the upper clamping plate, and the voice coil is electrically connected to an external circuit via the electrical connector.

[0016] The benefits of the present invention are as follows: the present invention provides a loudspeaker, comprising a diaphragm and a dome integrally formed with the diaphragm, the dome comprising a main body and a positioning portion extending along an edge of the main body. Compared with the related art, the positioning portion of the present invention is used to ensure the concentricity of the diaphragm and the dome when they are integrally formed, thereby effectively improving the assembly accuracy and consistency of the loudspeaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. 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 work, among which:

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

[0019] Figure 2 for Figure 1 An exploded view of the speaker shown;

[0020] Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure of the sound membrane of the loudspeaker shown;

[0021] Figure 4 for Figure 1 The loudspeaker is shown in a cross-sectional view along line AA. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Please also see Figure 1-4 The present invention provides a loudspeaker 100, comprising a vibration system 1 and a magnetic circuit system 2 for driving the vibration system 1 to vibrate and generate sound.

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

[0025] The dome 112 includes a main body 1121 and a positioning portion 1122 bent and extended along the edge of the main body 1121, the positioning portion 1122 is used to ensure the concentricity of the diaphragm 111 and the dome 112 when they are integrally formed, and the bending and extending length of the positioning portion 1122 is greater than 0.05 mm. Preferably, in this embodiment, the bending and extending length of the positioning portion 1122 is 0.4 mm.

[0026] The main body 1121 is fixed to the first fixing portion 1112, and the main body 1121 includes a pair of first edges 1123, a pair of second edges 1124 arranged adjacent to the first edges 1123, and an arcuate edge 1125 connecting the first edges 1123 and the second edges 1124 in sequence, and the positioning portion 1122 is arranged on at least one of the first edges 1123, the second edges 1124 and the arcuate edge 1125. Preferably, in this embodiment, the positioning portion 1122 is arranged on four edges of the arcuate edge 1125.

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

[0028] The one-piece 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 one-piece molding manner.

[0029] The positioning portion 1122 is cooperated with the recessed portion of the sound membrane mold when the diaphragm 111 and the dome 112 are integrally formed, so as to ensure 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 concentricity of the diaphragm 111 and the dome 112 is better, so that the amount of glue used for gluing is reduced. In addition, the preferred material for gluing is a binder, and the gluing method is to spray a thin layer on the surface of the material to avoid glue shortage and glue overflow. Since the hot pressing and injection molding in the one-piece molding process do not require glue and binder, there is no glue shortage and glue overflow, which effectively improves the assembly accuracy and consistency of the speaker.

[0030] The magnetic circuit system 2 includes a yoke 21 and a main magnet 22 arranged above the yoke 21, a secondary magnet 23 spaced apart from the main magnet 22, a pole core 24 attached to the main magnet 22, and an upper clamping plate 25 surrounding the main magnet 22 and attached to 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, and the second fixing portion 1113 is fixed to the upper clamping plate 25.

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

[0032] The upper clamping plate 25 includes a second protrusion 251 that is bent and extended toward the sound membrane 11. The second protrusion 251 is fixed to the second fixing portion 1113. The second protrusion 251 includes a top 2511 and a side wall 2512 that are simultaneously fixed to the second fixing portion 1113 to ensure the stability of the speaker.

[0033] The speaker 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 via the electrical connector 3 , and the first protrusion 211 is provided with a relief portion 2111 for relief of the electrical connector 3 .

[0034] Compared with the related art, the present invention provides a loudspeaker, comprising a vibration system and a magnetic circuit system for driving the vibration system to vibrate and produce sound, the vibration system comprising a sound membrane and a voice coil for driving the sound membrane to vibrate, the sound membrane comprising a diaphragm and a dome fixed to the diaphragm, the dome comprising a main body and a positioning portion bent and extended along the edge of the main body, the positioning portion being used to ensure the concentricity of the diaphragm and the dome when they are integrally formed. The present invention arranges the positioning portion on the edge of the dome, which effectively improves the assembly accuracy and consistency of the loudspeaker and improves the reliability of the loudspeaker.

[0035] The above description is only an implementation mode of the present invention. It should be pointed out that, for ordinary technicians in this field, improvements can be made without departing from the creative concept of the present invention, but these all belong to 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, wherein the vibration system comprises a sound film and a voice coil for driving the sound film to vibrate, wherein the sound film comprises a diaphragm and a dome fixed to the diaphragm, characterized in that: The dome includes a main body and a positioning portion extending along the edge of the main body, the diaphragm includes a folding ring portion, a first fixing portion connected to the inner periphery of the folding ring portion, and a second fixing portion connected to the outer periphery of the folding ring portion, the main body is fixed to the first fixing portion, the positioning portion is located at the junction of the folding ring portion and the first fixing portion, and the positioning portion is cooperated with the recessed portion of the sound membrane mold 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 arc sides sequentially connecting the first sides and the second sides.

3. The loudspeaker according to claim 2, characterized in that The positioning portion 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 portion 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 bending and extending length of the positioning portion is greater than 0.05 mm.

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

7. The loudspeaker according to claim 1, characterized in that The magnetic circuit system includes a yoke, a main magnetic steel arranged above the yoke, a secondary magnetic steel arranged at a distance from the main magnetic steel, a pole core arranged above the main magnetic steel, and an upper clamping plate surrounding the main magnetic steel and arranged above the secondary magnetic steel.

8. The loudspeaker according to claim 7, characterized in that The yoke includes a first protrusion extending and bending toward the upper clamping plate, the first protrusion is fixed to the upper clamping plate, the upper clamping plate includes a second protrusion extending and bending toward the sound membrane, the second protrusion is fixed to the second fixing portion.

9. The loudspeaker according to claim 7, characterized in that The loudspeaker further comprises an electrical connector arranged on the magnetic circuit system, the electrical connector is fixed to the upper clamping plate, and the voice coil is electrically connected to an external circuit via the electrical connector.

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