Sounder

Abstract

The present invention provides a sound generator. The sound generator includes a vibration system, a magnetic circuit system, a conductive member, and a fixing member. The vibration system includes a diaphragm and a voice coil fixed to the diaphragm. The voice coil is a hollow cylindrical structure formed by a voice coil wire. The connecting portion is adjacent to and spaced from the voice coil. The diaphragm includes a dome and a folded ring portion located around the dome. The dome includes a dome body and a dome boss extending from the dome body toward the voice coil and fixed to the voice coil. The dome boss includes a plurality of spaced sub-dome bosses. The dome also includes a dome reinforcement located between adjacent sub-dome bosses. The dome reinforcement includes a first reinforcement portion fixed to the outer surface of the voice coil and a second reinforcement portion fixed to the upper surface or the lower surface of the connecting portion. The dome body, dome boss, and dome reinforcement are integrally formed. Compared with related art, the sound generator provided by the present invention has a simple structure and good reliability.

Description

Technical field

[0001] The present invention relates to the field of sound-to-electricity conversion, and in particular to a sound generator. [Background Technology]

[0002] With the rapid development of mobile communication technology in recent years, consumers are increasingly using mobile communication devices with voice capabilities, such as mobile phones, handheld game consoles, laptops, multimedia players, and other devices capable of communicating over public or private communication networks. As the voice playback device, the design of the voice generator directly affects the performance of mobile communication devices.

[0003] In related technologies, a sound generator includes a vibration system for generating sound, a magnetic circuit system for driving the vibration system, conductive components for feeding power to the vibration system, and fixing components for assembling the vibration system, magnetic circuit system, and conductive components. The vibration system includes a diaphragm, a voice coil, and a frame located between the diaphragm and the voice coil. The frame adjusts the position of the voice coil in the vibration direction and improves amplitude symmetry.

[0004] However, in the related art, the provision of a frame increases the number of parts of the sound generator, thereby increasing the manufacturing cost and assembly process, and the heavy weight of the frame increases the overall weight of the sound generator.

[0005] Therefore, it is necessary to provide an improved sound generator to solve the above problems. [Summary of the invention]

[0006] In order to solve the problem in the related art that the provision of a frame increases the difficulty and cost of manufacturing a sound generator, the present invention provides a sound generator with a simple structure and good reliability.

[0007] A sound generator comprises a vibration system for vibrating and generating sound, a magnetic circuit system for driving the vibration system to vibrate, a conductive member for feeding power to the vibration system, and a fixing member for assembling the vibration system, the magnetic circuit system, and the conductive member, wherein the vibration system comprises a diaphragm and a voice coil fixed to the diaphragm, the voice coil being a cylindrical structure with a hollow structure formed by winding a voice coil wire, the voice coil having an upper surface facing the diaphragm and an outer surface of the voice coil facing away from the hollow structure, the conductive member at least comprising a connecting portion opposite to the diaphragm, the connecting portion being adjacent to and spaced from the outer surface of the voice coil, the connecting portion having an upper surface facing the diaphragm and an outer surface facing away from the diaphragm The lower surface of the connecting part of the membrane, the end of the voice coil wire is connected to the upper surface of the connecting part or the lower surface of the connecting part, the diaphragm includes a dome and a folding ring part located around the dome, the dome includes a dome body and a dome boss extending from the dome body to the voice coil and fixed to the upper surface of the voice coil, the dome boss includes a plurality of spaced sub-dome bosses, the dome also includes a dome reinforcement located between adjacent sub-dome bosses, the dome reinforcement includes a first reinforcement part fixed to the outer surface of the voice coil and a second reinforcement part fixed to the upper surface of the connecting part or the lower surface of the connecting part, the dome body, the dome boss and the dome reinforcement are formed as one piece.

[0008] As an improvement, the conductive member is a flexible circuit board.

[0009] As an improvement, the dome reinforcement is fixed to the voice coil and the connecting portion by glue.

[0010] As an improvement, the conductive member further includes an outer peripheral portion connected to the fixing member and an arm portion connecting the outer peripheral portion and the connecting portion, and the arm portion has deformation capability.

[0011] As an improvement, the connecting portion includes a plurality of sub-connecting portions arranged at intervals, at least one sub-connecting portion is directly connected to the end of the voice coil wire, and at least one sub-connecting portion is not directly connected to the end of the voice coil wire.

[0012] As an improvement, the voice coil is a rectangular column with four rounded corners, and the dome reinforcement is arranged corresponding to the rounded corners of the voice coil.

[0013] As an improvement, the spherical top body includes a central area located in the center and a fixed area fixed to the folding ring portion, and the spherical top boss is located between the central area and the fixed area.

[0014] As an improvement, adjacent sub-spherical top bosses are spaced apart to form an avoidance gap on a side of the spherical top body close to the voice coil to avoid the voice coil wire.

[0015] As an improvement, the spherical top boss includes a bottom wall fixed to the voice coil, a side wall connecting the bottom wall and the spherical top body, and an opening enclosed by the side wall and opposite to the bottom wall.

[0016] As an improvement, the magnetic circuit system includes a main magnet and auxiliary magnets arranged around the main magnet, the main magnet and the auxiliary magnets are spaced to form a magnetic gap, and the voice coil is inserted into the magnetic gap.

[0017] Compared with the related art, the present invention replaces the skeleton structure by providing a spherical dome boss integrated with the spherical dome body on the top of the spherical dome, thereby reducing the assembly process of the skeleton and reducing the weight of the sound generator; by providing a spherical dome reinforcement member integrated with the spherical dome body and the spherical dome boss, without adding any parts, the voice coil and the conductive member originally connected only by the voice coil wire have a more stable connection relationship, preventing the voice coil and the conductive member from separating, and increasing the reliability of the sound generator.

Brief Description of the Drawings

[0018] 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. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0019] Figure 1 A schematic diagram of the three-dimensional structure of the sound generator provided by the present invention;

[0020] Figure 2 for Figure 1 A cross-sectional view of section AA is shown;

[0021] Figure 3 for Figure 1 A perspective cross-sectional view of a portion of the structure of the sound generator shown;

[0022] Figure 4 This is a schematic diagram of the assembly of the dome, voice coil, and conductive parts;

[0023] Figure 5 for Figure 2 A partial enlarged view of . [Specific implementation method]

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0025] Please refer to Figure 1-5 The present invention provides a sound generator 100, which includes a vibration system 1 for vibrating and generating sound, a magnetic circuit system 2 for driving the vibration system 1 to vibrate, a conductive member 3 for feeding power to the vibration system 1, and a fixing member 4 for assembling the vibration system 1, the magnetic circuit system 2 and the conductive member 3.

[0026] like Figure 1-2 As shown in Figures 4-5, the vibration system 1 includes a diaphragm 11 and a voice coil 12 fixed to the diaphragm 11. The voice coil 12 is formed by a voice coil wire, and is in the shape of a column with a hollow structure, specifically a rectangular column with rounded corners. The voice coil 12 has an upper voice coil surface 121 facing the diaphragm 11 and an outer voice coil surface 122 facing away from the hollow structure. The diaphragm 11 includes a dome 111 and a folding ring 112 located around the dome 111, the dome 111 includes a dome body 1111 and a dome boss 1112 extending from the dome body 1111 to the voice coil 12 and fixed to the voice coil upper surface 121, wherein the dome body 1111 is perpendicular to the vibration direction of the diaphragm 11, and the dome boss 1112 extends roughly along the vibration direction of the diaphragm 11. The dome body 1111 includes a central region 11111 located at the center and a fixed region 11112 secured to the surround 112. The dome boss 1112 is located between the central region 11111 and the fixed region 11112. The dome boss 1112 comprises a plurality of spaced sub-dome bosses 1112a. Adjacent sub-dome bosses 1112a are spaced apart on the side of the dome body 1111 near the voice coil 12 to form a clearance gap to avoid the voice coil wire. The dome boss 1112 includes a bottom wall 11121 secured to the voice coil 12, a side wall 11122 connecting the bottom wall 11121 to the dome body 1111, and an opening 11123 enclosed by the side wall 11122 and opposite the bottom wall 11121. The dome portion 111 also includes a dome reinforcement 1113 located between adjacent sub-dome bosses 1112a. The dome reinforcement 1113 includes a first reinforcement portion 11131 bent from the dome body 1111 between adjacent sub-dome bosses 1112a toward the side where the voice coil 12 is located, and a second reinforcement portion 11132 bent from the end of the first reinforcement portion 11131. The dome body 1111, the dome boss 1112 and the dome reinforcement 1113 are formed as one piece.

[0027] like Figure 2 As shown, the magnetic circuit system 2 includes a lower clamping plate 21, a main magnet 22 stacked in the middle of the lower clamping plate 21, auxiliary magnets 23 stacked around the periphery of the lower clamping plate 21, a main pole core 24 stacked on the main magnet 22, and an upper clamping plate 25 stacked on the auxiliary magnet 23. The main magnet 22 and the auxiliary magnet 23 form a magnetic gap for the voice coil 12 to be inserted.

[0028] like Figure 3-4As shown, the conductive member 3 is a flat flexible circuit board, comprising a connecting portion 31 for connecting to the voice coil 12, a peripheral portion 33 located outside the connecting portion 31, and an arm portion 32 connecting the connecting portion 31 and the peripheral portion 33. The arm portion 32 is deformable. The peripheral portion 33, the arm portion 32, and the connecting portion 31 each comprise four separate parts. The connecting portion 31 includes two sub-connecting portions 31a that are directly connected to the end portion 12a of the voice coil wire, and two sub-connecting portions 31b that are not directly connected to the end portion 12a of the voice coil wire.

[0029] like Figure 2 As shown, the fixing member 4 includes a basin frame 41 and a steel cover 42 connected to the basin frame 41. The basin frame 41 and the steel cover 42 cooperate to form a frame with a receiving space.

[0030] like Figure 3-4 As shown, after assembly, the vibration system 1, magnetic circuit system 2, and conductive member 3 are all housed and fixed in the fixing member. The conductive member 3 opposes the diaphragm 11, and its outer periphery 33 is fixed to the frame 41 to support the arm portion 32 and the connecting portion 31. The four connecting portions 31 of the conductive member 3 are spaced apart outside the rounded corner of the voice coil and are adjacent to and spaced apart from the outer surface 122 of the voice coil. The connecting portion 31 has an upper connecting portion surface 311 facing the diaphragm 11 and a lower connecting portion surface 312 facing away from the diaphragm 11. The end 12a of the voice coil wire is connected to the upper connecting portion surface 311 or the lower connecting portion surface 312. The dome reinforcement 1113 is fixed to the voice coil 12 and the connecting portion 31 at the rounded corner of the voice coil 12 using glue. Specifically, the first reinforcement portion 11131 is fixed to the outer surface 122 of the voice coil, and the second reinforcement portion 11132 is fixed to the upper connecting portion surface 311.

[0031] In other embodiments, the second reinforcement portion 11132 may also be fixed to the lower surface 312 of the connecting portion, while the first reinforcement portion 11131 is fixed to the outer surface 122 of the voice coil.

[0032] In other embodiments, the number of the connecting portions 31 and the number of the dome reinforcements 1113 are not limited to four, as long as they can be spaced around the voice coil 12 and ensure the symmetry of the vibration of the diaphragm 11 .

[0033] In other embodiments, the voice coil 12 may be in a shape other than a rectangular column, such as a cylindrical shape.

[0034] In other embodiments, the peripheral portion 33 , the arm portion 32 , and the connecting portion 31 of the conductive member 3 may all be an integral structure.

[0035] The present invention replaces the skeleton structure by providing a spherical top boss 1112 on the spherical top part 111 that is integrated with the spherical top body 1111, thereby reducing the assembly process of the skeleton and reducing the weight of the sound generator; by providing a spherical top reinforcement 1113 that is integrated with the spherical top body 1111 and the spherical top boss 1112, without adding any parts, the voice coil 12 and the conductive part 3 that were originally connected only by the voice coil wire have a more stable connection relationship, preventing the voice coil 12 and the conductive part 3 from separating, and increasing the reliability of the sound generator.

[0036] The above are merely embodiments of the present invention. It should be pointed out 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 scope of protection of the present invention.

Claims

1. A sound generator, comprising a vibration system for vibrating and generating sound, a magnetic circuit system for driving the vibration system to vibrate, a conductive member for feeding power to the vibration system, and a fixing member for assembling the vibration system, the magnetic circuit system, and the conductive member, the vibration system comprising a diaphragm and a voice coil fixed to the diaphragm, the voice coil being a cylindrical structure with a hollow structure formed by winding a voice coil wire, the voice coil having an upper surface facing the diaphragm and an outer surface of the voice coil facing away from the hollow structure, the conductive member comprising at least a connecting portion opposite to the diaphragm, the connecting portion being adjacent to and spaced from the outer surface of the voice coil, the connecting portion having an upper surface facing the diaphragm and a lower surface facing away from the diaphragm, the end of the voice coil wire being connected to the upper surface of the connecting portion or the lower surface of the connecting portion, characterized in that The diaphragm includes a dome and a folding ring portion located around the dome, the dome includes a dome body and a dome boss extending from the dome body toward the voice coil and fixed to the upper surface of the voice coil, the dome boss includes a plurality of spaced sub-dome bosses, the dome also includes a dome reinforcement located between adjacent sub-dome bosses, the dome reinforcement includes a first reinforcement portion fixed to the outer surface of the voice coil and a second reinforcement portion fixed to the upper surface or the lower surface of the connecting portion, the dome body, the dome boss and the dome reinforcement are integrally formed.

2. The sound generator according to claim 1, characterized in that The conductive element is a flexible circuit board.

3. The sound generator according to claim 1, characterized in that The dome reinforcement is fixed to the voice coil and the connecting portion by glue.

4. The sound generator according to claim 1, characterized in that The conductive member further includes an outer peripheral portion connected to the fixing member and an arm portion connecting the outer peripheral portion and the connecting portion, wherein the arm portion has deformation capability.

5. The sound generator according to claim 1, characterized in that The connecting portion includes a plurality of sub-connecting portions arranged at intervals, at least one sub-connecting portion is directly connected to the end of the voice coil wire, and at least one sub-connecting portion is not directly connected to the end of the voice coil wire.

6. The sound generator according to claim 4, characterized in that The voice coil is a rectangular column with four rounded corners, and the dome reinforcement is arranged corresponding to the rounded corners of the voice coil.

7. The sound generator according to claim 1, characterized in that The spherical top body includes a central area located in the center and a fixing area fixed to the folding ring portion, and the spherical top boss is located between the central area and the fixing area.

8. The sound generator according to claim 1, characterized in that Adjacent sub-spherical top bosses are spaced apart on a side of the spherical top body close to the voice coil to form an avoidance gap to avoid the voice coil line.

9. The sound generator according to claim 1, characterized in that The spherical top boss includes a bottom wall fixed to the voice coil, a side wall connecting the bottom wall and the spherical top body, and an opening surrounded by the side wall and opposite to the bottom wall.

10. The sound generator according to claim 1, characterized in that The magnetic circuit system includes a main magnetic steel and a secondary magnetic steel arranged around the main magnetic steel. The main magnetic steel and the secondary magnetic steel are spaced apart to form a magnetic gap, and the voice coil is inserted into the magnetic gap.

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