CN215300903U

CN215300903U - Sounding device

Info

Publication number: CN215300903U
Application number: CN202120879832.0U
Authority: CN
Inventors: 刘晓东; 刘莎莎
Original assignee: AAC Acoustic Technologies Shenzhen Co Ltd; AAC Microtech Changzhou Co Ltd
Current assignee: AAC Technologies Holdings Shenzhen Co Ltd; AAC Microtech Changzhou Co Ltd
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2021-12-24
Anticipated expiration: 2031-04-26

Abstract

The utility model provides a sounding device, which comprises a vibration system and a magnetic circuit system for driving the vibration system to vibrate and sound, wherein the vibration system and the magnetic circuit system are both fixedly connected with a basin frame; the vibrating diaphragm comprises a first fixing part, a second fixing part and a ring folding part, wherein at least part of the first fixing part is clamped between the voice coil and the flexible circuit board, the second fixing part is fixed on the basin frame, and the ring folding part is connected with the first fixing part and the second fixing part; the flexible circuit board is close to one side of first fixed part is close to the voice coil loudspeaker voice coil protrusion forms and adds the rib, the voice coil loudspeaker voice coil passes through in proper order first fixed part with it is fixed in to add the rib flexible circuit board. The rib is arranged on the flexible circuit board, so that a framework between the voice coil of the sound production device and the vibrating diaphragm is eliminated, and the structure of the sound production device is simpler. The flexible circuit board is arranged on the outer side of the vibrating diaphragm, so that the assembly efficiency is higher, and the production cost is reduced.

Description

Sounding device

[ technical field ] A method for producing a semiconductor device

The utility model belongs to the technical field of the electroacoustic conversion technique and specifically relates to indicate a sounding device.

[ background of the invention ]

With the advent of the mobile internet era, the number of smart mobile devices has been increasing, and sound generating devices for playing sounds are being used in large numbers in smart mobile devices of today.

The sound production device of prior art includes the basin frame and is fixed in the vibration system of basin frame and has the magnetic circuit in magnetic gap, and vibration system is including the vibrating diaphragm that is fixed in the basin frame, be fixed in the vibrating diaphragm and insert locate the voice coil loudspeaker voice coil of magnetic gap in order to drive the vibrating diaphragm vibration sound production and connect in the skeleton of vibrating diaphragm and voice coil loudspeaker voice coil. However, the prior art has more parts, complex structure and difficult assembly.

Therefore, there is a need for a sound producing device that is simple in construction and easy to assemble.

[ Utility model ] content

The utility model discloses the technical problem that will solve is: the sounding device is simple in structure and convenient to assemble.

In order to solve the technical problem, the utility model discloses a technical scheme be: a sounding device comprises a vibration system and a magnetic circuit system for driving the vibration system to vibrate and sound, wherein the vibration system and the magnetic circuit system are both fixedly connected to a basin frame, the vibration system comprises a vibrating diaphragm for vibrating and sound, a voice coil for driving the vibrating diaphragm to vibrate and a flexible circuit board for providing an electric signal for the voice coil, and the flexible circuit board is fixed on one side of the voice coil, which is far away from the magnetic circuit system;

the vibrating diaphragm comprises a first fixing part, a second fixing part and a ring folding part, wherein at least part of the first fixing part is clamped between the voice coil and the flexible circuit board, the second fixing part is fixed on the basin frame, and the ring folding part is connected with the first fixing part and the second fixing part;

the flexible circuit board is close to one side of first fixed part is close to the voice coil loudspeaker voice coil protrusion forms and adds the rib, the voice coil loudspeaker voice coil passes through in proper order first fixed part with it is fixed in to add the rib flexible circuit board.

According to an embodiment of the present invention, the flexible circuit board includes a first end fixed to a side of the first fixing portion away from the voice coil, a second end fixed to a side of the second fixing portion away from the frame, and an elastic arm connecting the first end and the second end; the reinforcing rib is formed by protruding from the first end to the position close to the voice coil.

According to the utility model discloses an embodiment, the plane at first end place with the vibration direction of vibrating diaphragm sets up perpendicularly, first end is cyclic annularly in the plane, add the rib be cyclic annular set up in first end.

According to the utility model discloses an embodiment, be provided with the breach on the rib, on the first fixed part with the position that the breach corresponds is to keeping away from the voice coil loudspeaker voice coil is protruding and be fixed in first end.

According to the utility model discloses an embodiment, flexible circuit board still include certainly first end to the inside extension that extends of vocal device, the extension with the breach is corresponding, follows the vibration direction of vibrating diaphragm, magnetic circuit with the position that the extension corresponds is provided with dodges the portion.

According to an embodiment of the present invention, the first fixing portion includes a first connecting arm, a second connecting arm, and a third connecting arm; first linking arm set up in the voice coil loudspeaker voice coil with add between the rib, the third linking arm is located add the rib be close to one side of basin frame and with it is connected to roll over ring portion, the second linking arm is connected first linking arm with the third linking arm forms the step, the second linking arm is located add the rib and be close to one side of basin frame.

According to the utility model discloses an embodiment, follow the vibration direction of vibrating diaphragm, the height of step with add the protrusion height of rib the same.

According to an embodiment of the invention, the reinforcement bars are non-metal bars or non-closed metal bars.

According to an embodiment of the present invention, the density of the metal strip is less than the density of the voice coil.

According to the utility model discloses an embodiment, vibration system still includes the dome, the dome connect in flexible circuit board keeps away from one side of first fixed part.

The embodiment of the utility model provides an in above-mentioned one or more technical scheme, one of following technological effect has at least:

the embodiment of the utility model provides a sounder, flexible circuit board set up in the outside of vibrating diaphragm, and one side that flexible circuit board is close to first fixed part forms to the protrusion of voice coil loudspeaker voice coil direction with the rib. The voice coil is connected to the first fixing part of the vibrating diaphragm through the reinforcing ribs, and the reinforcing ribs have a rigid supporting effect. When the vibrating diaphragm and the voice coil operate, the reinforcing ribs can maintain the stability of the voice coil and the vibrating diaphragm, the voice coil is prevented from laterally shaking, and the sound quality of the sound production device is improved. The rib is arranged on the flexible circuit board, so that a framework between the voice coil of the sound production device and the vibrating diaphragm is eliminated, and the structure of the sound production device is simpler. The flexible circuit board is arranged on the outer side of the vibrating diaphragm, so that the assembly efficiency is higher, and the production cost is reduced.

[ description of the drawings ]

The specific structure of the present invention is detailed below with reference to the accompanying drawings:

fig. 1 is an exploded view of a sound device according to an embodiment of the present invention;

fig. 2 is a perspective view of a sound generating device according to an embodiment of the present invention;

fig. 3 is a top view of a flexible circuit board of a sound device according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view A-A of the sound device of the present invention;

FIG. 5 is a cross-sectional view B-B of the sound device according to the embodiment of the present invention;

fig. 6 is a partial enlarged view C of a sound generating device according to an embodiment of the present invention.

In the figure: 10. a vibration system; 11. vibrating diaphragm; 111. a first fixed part; 112. a second fixed part; 113. a folded ring part; 114. a through hole; 1110. a protruding structure; 1111. a first connecting arm; 1112. a second connecting arm; 1113. a third connecting arm; 12. a voice coil; 13. a flexible circuit board; 131. a first end; 132. a second end; 133. a spring arm; 1311. an extension portion; 14. adding ribs; 141. a notch; 15. a ball top; 20. a magnetic circuit system; 21. a first yoke; 22. main magnetic steel; 23. a secondary magnetic steel; 24. a second yoke; 223. a magnetic gap; 241. an avoidance part; 30. a basin stand.

[ detailed description ] embodiments

In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Vibration system among the prior art avoids the voice coil loudspeaker voice coil to take place to rock about the during operation and influences tone quality in order to keep voice coil loudspeaker voice coil and vibrating diaphragm stability at the during operation, often sets up the skeleton between voice coil loudspeaker voice coil and vibrating diaphragm, and this skeleton is used for keeping the equilibrium of voice coil loudspeaker voice coil during operation. And a second vibrating diaphragm is also arranged on part of the sound production devices, a second fixed position is arranged on the basin frame, and the voice coil is connected with the first vibrating diaphragm and the second vibrating diaphragm. The technical scheme can lead to more sounding device parts, complex assembly process, increased assembly cost and larger product quality.

The embodiment of the present invention provides a sound generating device, please refer to fig. 1 to 6, the sound generating device includes a vibration system 10, a magnetic circuit system 20 and a basin frame 30.

The magnetic circuit system 20 is used for driving the vibration system 10 to vibrate and generate sound, and the vibration system 10 and the magnetic circuit system 20 are both fixedly installed on the basin stand 30. The frame 30 serves to maintain the relative positional relationship between the vibration system 10 and the magnetic circuit system 20. The size and shape of the frame 30 determine the outer contour of the whole sounding device, and the frame 30 can be round, rectangular and the like and is selected according to actual needs.

The embodiment of the utility model provides a vibration system 10 is including the voice coil loudspeaker voice coil 12 that is used for vibrating the vibrating diaphragm 11 of sound production, the vibration of drive vibrating diaphragm 11 and provides the flexible circuit board 13 of the signal of telecommunication for voice coil loudspeaker voice coil 12.

According to an embodiment of the present invention, the diaphragm 11 includes a first fixing portion 111 and a second fixing portion 112, and a corrugated portion 113 connecting the first fixing portion 111 and the second fixing portion 112. The first fixing portion 111 is at least partially interposed between the voice coil 12 and the flexible circuit board 13. The second fixing portion 112 is fixedly connected to the frame 30, and the frame 30 maintains the position of the diaphragm 11. When the voice coil 12 moves under the driving action of the magnetic circuit system 20, the diaphragm 11 is driven to vibrate and sound.

The embodiment of the utility model provides a flexible circuit board 13 sets up the one side of keeping away from magnetic circuit 20 at voice coil loudspeaker voice coil 12, and flexible circuit board 13 is used for providing the signal of telecommunication for voice coil loudspeaker voice coil 12. One end of the flexible circuit board 13 near the first fixing portion 111 protrudes to a side near the voice coil 12 to form a rib 14. When mounted, the voice coil 12 is connected to the flexible circuit board 13 through the first fixing portion 111 and the reinforcing ribs 14 in this order. The reinforcing ribs 14 have certain strength and rigidity, so that the voice coil 12 can be prevented from laterally shaking when the voice coil 12 and the vibrating diaphragm 11 vibrate, and the sound quality of the sound production device is ensured.

The embodiment of the utility model provides an among the sounder, flexible circuit board 13 is close to the one end protrusion of first fixed part 111 and forms and adds rib 14, adds the position that rib 14 is located vibrating diaphragm 11 and voice coil loudspeaker voice coil 12 and connects, can provide effectual support at vibrating diaphragm 11 and voice coil loudspeaker voice coil 12 during operation, avoids voice coil loudspeaker voice coil 12 to take place the side direction and rock when vibrating to the tone quality of sounder has been improved. Meanwhile, the rib 14 is arranged on the flexible circuit board 13, and a framework between a traditional sound production device voice coil and a vibrating diaphragm is eliminated, so that the structure of the sound production device is simpler. The assembly efficiency of the sounding device is higher, the production cost is reduced, and the overall weight of the product is correspondingly reduced.

The embodiment of the utility model provides an among the sounder, flexible circuit board 13 connects in external circuit, provides the signal of telecommunication for voice coil loudspeaker voice coil 12. Meanwhile, the first end of the flexible circuit board 13 is further provided with a reinforcing rib 14 for increasing the balance and stability of the diaphragm 11 and the voice coil 12 during operation, so that the form of the flexible circuit board 13 has an important influence on the distribution of the reinforcing rib 14 and the stability of the voice coil 12.

According to an embodiment of the present invention, the flexible circuit board 13 includes a first end 131 fixed on the first fixing portion 111 and far away from the voice coil 12, a second end 132 fixed on the second fixing portion 112 and far away from the basin frame 30, and an elastic arm 133 connected to the first end 131 and the second end 132. The second end 132 is connected to an external power supply circuit, and the first end 131 is connected to the voice coil 12 to provide an electrical signal to the voice coil 12. The elastic arm 133 has good elasticity and toughness, and can maintain operation in a vibration environment for a long time. The reinforcing rib 14 is provided at the first end 131 on the side close to the voice coil 12 and is formed to protrude toward the side of the voice coil 12.

According to the utility model discloses an embodiment, the first end 131 of flexible circuit board 13 sets up in parallel to first fixed part 111, and the plane at first end 131 place sets up perpendicularly with the vibration direction of vibrating diaphragm 10 promptly. The first end 131 is in a ring shape in a plane, and the rib 14 is disposed in a ring shape at the first end 131 near the voice coil 12, forming a ring-shaped support structure at the first end 131. When the diaphragm 11 and the voice coil 12 vibrate, the annular rib 14 is stable in all directions, so that the diaphragm 11 and the voice coil 12 can be prevented from laterally shaking during vibration.

The material of the ribs 14 may be polymer non-metal ribs with certain strength and hardness, such as PI (polyimide) ribs 14. Of course, the material of the reinforcing rib 14 may also be a metal strip, and when the metal strip is selected, it is preferable to use a material having a density smaller than that of the voice coil 12, so as to reduce the load during vibration and increase the sound quality of the sound generating device.

It should be noted that the metal strip is selected to have an unclosed ring structure, so as to prevent the metal ring from interfering with the electromagnetic effect of the magnetic circuit system 20 and the voice coil 12.

The embodiment of the utility model provides an among the sounder, first fixed part 111 is connected in the first end 131 of flexible circuit board 13, is provided with between first fixed part 111 and the first end 131 with rib 14.

According to the utility model discloses an embodiment is provided with breach 141 on the rib 14, and the position that first fixed part 111 corresponds with breach 141 is to the protruding structure 1110 that forms in one side of keeping away from voice coil loudspeaker voice coil 12, and protruding structure 1110 inlays in breach 141, connects in the first end 131 of flexible circuit board 13.

The voice coil 12 is connected to the flexible circuit board 13 at the notch 141 to provide an electrical signal to the voice coil 12. The notch 141 and the protrusion 1110 are engaged with each other, and stability in assembling can be further increased.

According to an embodiment of the present invention, in order to avoid the reduction of the structural strength at the notch 141, the position corresponding to the notch 141 on the first end 131 of the flexible circuit board 13 is provided with an extension portion 1311, and the extension portion 1311 extends toward the inside of the sound generating device. In order to maintain the symmetry of the first end 131, the first end 131 is provided with an extension 1311 on both sides corresponding to the notch 141, and the voice coil 12 introduces an electrical signal through the extension 1311. When the voice coil 12 vibrates vertically, the extension portion 1311 vibrates in synchronization with the voice coil 12. In order to keep the sound generating device compact in structure and avoid collision during vibration, a relief portion 241 is provided on the magnetic circuit system 20 at a position corresponding to the extension portion 1311, and the relief portion 241 corresponds to the extension portion 1311 along the vibration direction of the diaphragm 11.

According to the utility model discloses an embodiment, in order to guarantee the stability of vibrating diaphragm 11 in all directions, breach 141 sets up the position at the symmetry axis of ribbing 14.

According to the utility model discloses an embodiment, extension 1311 is the rectangular block that two symmetries set up, and the edges and corners department of rectangular block adopts the chamfer design. Of course, the extension 1311 may also be semi-circular in configuration.

According to an embodiment of the present invention, the first fixing portion 111 includes a first connection arm 1111, a second connection arm 1112, and a third connection arm 1113.

The first connecting arm 1111 is disposed between the voice coil 12 and the rib 14, the third connecting arm 1113 is disposed on one side of the rib 14 close to the frame 30, the third connecting arm 1113 is connected to the hinge portion 113, and the first connecting arm 1111 and the third connecting arm 1113 are disposed in different planes. The second connecting arm 1112 is connected to the first connecting arm 1111 and the third connecting arm 1113 to form a step, and the second connecting arm 1112 is located on one side of the reinforcing rib 14 close to the basin stand 30. The first fixing portion 111 forms a step structure, so that the flexible circuit board and the diaphragm are combined more firmly, and the sound angle of the bending portion 113 is adjusted.

According to an embodiment of the present invention, the height of the second connecting arm 1112, i.e. the height of the step, is consistent with the protruding height of the rib 14, and the third connecting arm 1113 and the second fixing portion 113 are in the same plane at this time.

In one embodiment, the second connection arm 1112 may be connected to the folded ring portion 113 in an inclined manner, so that the sound emitting angle of the folded ring portion 113 is consistent with the vibration direction of the voice coil 12.

According to an embodiment of the present invention, the vibration system 10 further includes a dome 15, a through hole 114 is disposed at a position of the first fixing portion 111 close to the center of the sound generating device, and the dome 15 is installed on one side of the flexible circuit board 13 far away from the first fixing portion 111 and covers the through hole 114. The diaphragm 11 of the sound production device with the dome 15 can be made of light-weight and strong material, and can cover the range of the sound range of different levels, such as low, medium and high.

The utility model provides an among the sounder, magnetic circuit 20 is arranged in driving vibration system 10 vibration sound production.

According to an embodiment of the present invention, the magnetic circuit system 20 includes a first magnetic yoke 21, a main magnetic steel 22 installed at the center of the first magnetic yoke 21, and an auxiliary magnetic steel 23 symmetrically distributed around the main magnetic steel 22, and further includes a second magnetic yoke 24 corresponding to the main magnetic steel 22 and disposed on one side of the main magnetic steel 22 away from the first magnetic yoke 21. The escape portion 241 is opened in the second yoke 24. The first yoke 21 and the second yoke 24 do not produce magnetic field by themselves, and only serve as soft magnetic materials for magnetic line transmission in the magnetic circuit, and are generally made of soft iron with relatively high magnetic permeability, a3 steel and soft magnetic alloy, and in some special occasions, the yokes are also made of ferrite materials.

A magnetic gap 223 is arranged between the main magnetic steel 22 and the auxiliary magnetic steel 23, and the voice coil 12 is movably inserted between the magnetic gaps 223.

To sum up, the utility model provides a sounding device, flexible circuit board set up in the outside of vibrating diaphragm, and one side that flexible circuit board is close to first fixed part forms to the protrusion of voice coil loudspeaker voice coil direction and adds the rib. The voice coil is connected to the first fixing part of the vibrating diaphragm through the reinforcing ribs, and the reinforcing ribs have a rigid supporting effect. When vibrating diaphragm and voice coil during operation, add the stability that the rib can maintain voice coil loudspeaker voice coil and vibrating diaphragm, avoid the voice coil loudspeaker voice coil side direction to rock. The rib is arranged on the flexible circuit board, so that a framework between the voice coil of the sound production device and the vibrating diaphragm is eliminated, and the structure of the sound production device is simpler. The flexible circuit board is arranged on the outer side of the vibrating diaphragm, so that the assembly efficiency is higher, and the production cost is reduced. When the reinforcing ribs are of an annular structure, the reinforcing ribs can keep stability in all directions, the voice coil can be prevented from laterally shaking in any direction, and the sound quality of the sound production device is improved. When first fixed part formed the stair structure, can make the more firm that combines between flexible circuit board and the vibrating diaphragm, make the sound production direction of book ring portion and the vibration direction of voice coil loudspeaker voice coil keep unanimous. When the reinforcing bar adopts a metal bar with low density, the interference of self weight to the vibration of the voice coil can be reduced. When the vibration system is provided with the ball top, the vibration diaphragm can be made of light-weight and high-strength materials and can cover the range of the low, medium and high sound ranges.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a sounder, includes vibration system and drive the magnetic circuit of vibration system vibration sound production, vibration system with the equal fixed connection of magnetic circuit in basin frame, its characterized in that: the vibration system comprises a vibrating diaphragm for vibrating and sounding, a voice coil for driving the vibrating diaphragm to vibrate and a flexible circuit board for providing an electric signal for the voice coil, and the flexible circuit board is fixed on one side of the voice coil, which is far away from the magnetic circuit system;

2. The sound production device of claim 1, wherein: the flexible circuit board comprises a first end fixed on one side of the first fixing part, which is far away from the voice coil, a second end fixed on one side of the second fixing part, which is far away from the basin stand, and an elastic arm connecting the first end and the second end; the reinforcing rib is formed by protruding from the first end to the position close to the voice coil.

3. The sound production device of claim 2, wherein: the plane where the first end is located is perpendicular to the vibration direction of the vibrating diaphragm, the first end is annular in the plane, and the reinforcing ribs are annularly arranged at the first end.

4. The sound production device of claim 3, wherein: the reinforced bar is provided with a notch, and the position of the first fixing part corresponding to the notch is far away from the voice coil bulge and fixed at the first end.

5. The sound production device of claim 4, wherein: the flexible circuit board further comprises an extension part extending from the first end to the interior of the sounding device, the extension part corresponds to the notch, and an avoiding part is arranged at a position of the magnetic circuit system corresponding to the extension part along the vibration direction of the vibrating diaphragm.

6. The sound production device of claim 1, wherein: the first fixing part comprises a first connecting arm, a second connecting arm and a third connecting arm; first linking arm set up in the voice coil loudspeaker voice coil with add between the rib, the third linking arm is located add the rib be close to one side of basin frame and with it is connected to roll over ring portion, the second linking arm is connected first linking arm with the third linking arm forms the step, the second linking arm is located add the rib and be close to one side of basin frame.

7. The sound production device of claim 6, wherein: along the vibration direction of vibrating diaphragm, the height of step is the same with the protrusion height of rib.

8. The sound production device of claim 1, wherein: the reinforcing ribs are non-metal strips or unsealed metal strips.

9. The sound production device of claim 8, wherein: the density of the metal strip is less than the density of the voice coil.

10. The sound production device of claim 1, wherein: the vibration system further comprises a dome, and the dome is connected to one side, far away from the first fixing part, of the flexible circuit board.