CN219802650U - Flexible circuit board and multifunctional sounding device - Google Patents
Flexible circuit board and multifunctional sounding device Download PDFInfo
- Publication number
- CN219802650U CN219802650U CN202320226627.3U CN202320226627U CN219802650U CN 219802650 U CN219802650 U CN 219802650U CN 202320226627 U CN202320226627 U CN 202320226627U CN 219802650 U CN219802650 U CN 219802650U
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- circuit board
- fixing part
- flexible circuit
- fixing
- fixed
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- 230000004308 accommodation Effects 0.000 claims description 12
- 230000007704 transition Effects 0.000 claims description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 101150114468 TUB1 gene Proteins 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The utility model provides a flexible circuit board and a multifunctional sound generating device, wherein the flexible circuit board comprises a first fixing part, a second fixing part and a connecting part, wherein the second fixing part is arranged at intervals of the first fixing part, the connecting part is connected with the first fixing part and the second fixing part, and the connecting part is bent and extends upwards obliquely from the end part of the first fixing part, so that the connecting part forms a first protruding part higher than the plane where the first fixing part is positioned; the multifunctional sound generating device comprises a basin frame, a magnetic circuit system fixed on the basin frame, a sound generating unit positioned on one side of the magnetic circuit system and a motor unit positioned on the other side of the magnetic circuit system, wherein the motor unit comprises a first shell provided with an accommodating space and fixed on the magnetic circuit system, a vibrator suspended in the accommodating space, an elastic supporting piece for connecting the vibrator and the first shell, and the flexible circuit board. According to the utility model, the force arm of the flexible circuit board is reversely bent, so that the stress concentration area of the force arm is avoided, and the fatigue life of the force arm can be greatly prolonged by slightly changing the shape of the force arm of the flexible circuit board.
Description
[ field of technology ]
The utility model relates to the technical field of electronic equipment, in particular to a flexible circuit board and a multifunctional sound generating device comprising the same.
[ background Art ]
With the development of electronic technology, portable consumer electronic devices are increasingly being pursued. In the prior art, the fatigue life of the arm of force of the flexible circuit board in the electronic equipment at the position of the fixed end is very low, and stress concentration and further fracture easily occur at the fixed position in a fatigue reliability test. Particularly in electronic products with motor structures, a higher risk of breakage is created because part of the structure of the flexible circuit board will vibrate with the vibrator of the motor.
Therefore, it is necessary to provide a new flexible circuit board and a multifunctional sound generating device including the same to solve the above-mentioned problems.
[ utility model ]
The utility model aims to provide a flexible circuit board with dispersed stress and longer service life.
In order to achieve the above object, the present utility model provides a flexible circuit board, which includes a first fixing portion, a second fixing portion having a height difference from the first fixing portion, and a connecting portion connecting the first fixing portion and the second fixing portion, wherein the connecting portion is bent and extended obliquely upward from an end portion of the first fixing portion, so that the connecting portion forms a first protruding portion higher than a plane in which the first fixing portion is located.
Preferably, the connecting portion is bent and extended obliquely downward from an end portion of the second fixing portion, so that the connecting portion forms a second protruding portion lower than a plane in which the second fixing portion is located.
Preferably, the first protruding portion has an arc-shaped structure.
Preferably, the second protruding portion has an arc-shaped structure.
Another object of the present utility model is to provide a multifunctional sound generating device with stress dispersion and longer service life of a flexible circuit board.
In order to achieve the above object, the utility model provides a multifunctional sound generating device, which comprises a basin frame, a magnetic circuit system fixed on the basin frame, a sound generating unit positioned at one side of the magnetic circuit system and a motor unit positioned at the other side of the magnetic circuit system, wherein the motor unit comprises a first shell provided with a containing space and fixed in the magnetic circuit system, a vibrator suspended in the containing space, an elastic supporting piece for connecting the vibrator and the first shell, and a flexible circuit board, the vibrator comprises a supporting plate and a coil fixed on the supporting plate, the flexible circuit board comprises a first fixing part positioned in the containing space and connected with the coil, a second fixing part positioned outside the containing space, and a connecting part for connecting the first fixing part and the second fixing part, and the connecting part bends and extends obliquely upwards from the end part of the first fixing part, so that the connecting part forms a first protruding part higher than the plane where the first fixing part is positioned.
Preferably, the connecting portion is bent and extended obliquely downward from an end portion of the second fixing portion, so that the connecting portion forms a second protruding portion lower than a plane in which the second fixing portion is located.
Preferably, the first protruding portion has an arc-shaped structure.
Preferably, the second protruding portion has an arc-shaped structure.
Preferably, hollowed-out parts for the connecting parts to extend out of the accommodating space are symmetrically arranged on two sides of the first shell.
Preferably, the sound generating unit comprises a vibrating diaphragm, a voice coil connected with the vibrating diaphragm to drive the vibrating diaphragm to vibrate and generate sound, and a circuit board for supplying power to the voice coil, wherein the circuit board comprises a third fixing part, a fourth fixing part and a transition part, the third fixing part is positioned in the basin frame and connected with the voice coil, the fourth fixing part is positioned outside the basin frame and fixed with the first shell, and the transition part is connected with the third fixing part and the fourth fixing part.
Compared with the related art, the flexible circuit board provided by the utility model comprises the first fixing part, the second fixing part with the height difference with the first fixing part and the connecting part for connecting the first fixing part and the second fixing part, wherein the connecting part is bent and extended obliquely upwards from the end part of the first fixing part, so that the connecting part forms a first protruding part higher than the plane where the first fixing part is located. Simultaneously, this embodiment novel still provides a multi-functional sound generating device, including the basin frame, be fixed in the magnetic circuit of basin frame, be located sound generating unit of magnetic circuit one side and be located the motor unit of magnetic circuit opposite side, the motor unit including have accommodation space and be fixed in the first casing of magnetic circuit, hang in vibrator in the accommodation space, connect the vibrator with the elastic support piece and the flexible circuit board of first casing, the vibrator include the backup pad and be fixed in the coil of backup pad, the flexible circuit board including be located in the accommodation space with the first fixed part that the coil is connected, with be located the second fixed part outside the accommodation space and connect the connecting portion of first fixed part with the connecting portion of second fixed part, connecting portion follow the tip of first fixed part is crooked extension towards oblique top for the connecting portion forms and is higher than the planar first bellying that first fixed part is located. The connecting part of the flexible circuit board is reversely bent and extended at the position connected with the fixing part to form the protruding part, so that the flexible circuit board with the structure can further disperse stress, the service life of the flexible circuit board is prolonged, and meanwhile, the service life of the multifunctional sounding device comprising the flexible circuit board is prolonged.
[ description of the drawings ]
For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
FIG. 1 is a schematic perspective view of a multifunctional sound generating apparatus according to the present utility model;
FIG. 2 is a schematic perspective view of the multifunctional sound-producing device shown in FIG. 1 at another angle;
FIG. 3 is a partially exploded view of the multi-functional sound emitting device shown in FIG. 1;
FIG. 4 is an exploded view of the multi-functional sound emitting device shown in FIG. 1;
FIG. 5 is a schematic perspective view of a flexible circuit board of the multi-functional sound generating apparatus shown in FIG. 1;
fig. 6 is a cross-sectional view taken along line A-A of fig. 1.
[ detailed description ] of the utility model
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-6, the multifunctional sound generating device 100 provided by the present utility model can be used in an electronic device, and the multifunctional sound generating device 100 can generate sound and play a role of a motor through vibration. The multifunctional sound generating device 100 comprises a basin frame 1, a magnetic circuit system 2 fixed on the basin frame 1, a motor unit 3 positioned on one side of the magnetic circuit system 2 and a sound generating unit 4 positioned on the other side of the magnetic circuit system 2, wherein the multifunctional sound generating device 100 is of a cuboid structure.
The basin frame 1 is of a rectangular annular structure, supporting feet 11 are arranged at four corners of the basin frame 1, and accommodating parts 12 are formed between adjacent supporting feet 11.
The magnetic circuit system 2 comprises a magnetic bowl 21, main magnetic steels 22 fixed on the magnetic bowl 21, auxiliary magnetic steels 23 which are arranged at intervals with the main magnetic steels 22 to form magnetic gaps, a main pole core 24 overlapped on the main magnetic steels 22 and auxiliary pole cores 25 overlapped on the auxiliary magnetic steels 23, wherein the auxiliary pole cores 25 are of annular structures and are partially embedded in the basin frame 1, and the number of the auxiliary magnetic steels 23 is two and are arranged on two sides of the main magnetic steels 22 along the long axis direction. The magnetic bowl 21 includes a carrying portion 211 carrying the main magnetic steel 22 and the auxiliary magnetic steel 23, and an extending portion 212 extending from two ends of the carrying portion 211 in a bending manner, and the extending portion 212 is accommodated in the accommodating portion 12 in the short axis direction of the basin stand 1. The bearing portion 211 is provided with an opening 213 at a position between the main magnet steel 22 and the auxiliary magnet steel 23. The auxiliary magnetic steel 23 is accommodated and fixed in the accommodating portion 12 of the basin frame 1 in the long axis direction, and is fixed to the basin frame 1.
The motor unit 3 includes a first housing 31 having a housing space 310 and fixed to the magnetic circuit 2, a vibrator 32 suspended in the housing space 310, an elastic support 33 connecting the vibrator 32 and the first housing 31, and a flexible circuit board 34. The first housing 31 includes a bottom wall 311, a side wall 312 extending from the bottom wall 311 in a bending manner and surrounding the bottom wall 311 to form the accommodating space 310, and hollow portions 313 penetrating through the side wall 312 and a portion of the bottom wall 311 are symmetrically disposed on the long axis side of the first housing 31. The vibrator 32 includes a support plate 321 and coils 322 fixed on the support plate 321 and vibrating together with the support plate 321, the number of the coils 322 is two, the coils 322 are symmetrically arranged on two sides of the support plate 321, and the support plate 321 is provided with a receiving groove 3211 for receiving the coils. The vibrator 32 vibrates along the short axis direction of the multifunctional sound emitting device 100 under the action of the magnetic circuit system 2. The number of the elastic supporting pieces 33 is four, the elastic supporting pieces 33 are V-shaped, two elastic supporting pieces 33 are respectively arranged on two sides of the vibrator 32, one end of each elastic supporting piece 33 is fixedly attached to the side wall 312 of the first shell 31, and the other end of each elastic supporting piece is fixedly attached to the side face of the supporting plate 321.
The flexible circuit board 34 includes a first fixing portion 341 located in the accommodating space 310, a second fixing portion 342 located outside the accommodating space 310, and a connecting portion 343 connecting the first fixing portion 341 and the second fixing portion 342, wherein a height difference exists between the first fixing portion 341 and the second fixing portion 342. The first fixing portion 341 is connected to the surface of the coil 322 near the magnetic circuit 2, the connecting portion 343 extends from the hollow portion 313 of the first housing 31 to the outside of the first housing 31 and is connected to the second fixing portion 342, and the second fixing portion 342 is attached to and fixed to the outer surface of the first housing 31. Specifically, as shown in fig. 5, one end of the connecting portion 343 is bent and extended obliquely upward from the end of the first fixing portion 341, so that a first protrusion 3431 higher than the plane in which the first fixing portion 341 is located is formed on one side of the connecting portion 343, and the other end of the connecting portion 343 is bent and extended obliquely downward from the end of the second fixing portion 342, so that a second protrusion 3432 lower than the plane in which the second fixing portion 342 is located is formed on the other end of the connecting portion 343, the first protrusion 3431 is in an arc structure, and the second protrusion 3432 is also in an arc structure. The connecting portion 343 further includes a connecting arm 3433 for connecting the first protruding portion 3431 and the second protruding portion 3432, and the connecting arm 3433 may have a rounded arc structure or a flat plate structure. The flexible circuit board 34 is partially connected with the coil 322 as the vibrator 32, so that the flexible circuit board 34 can vibrate along with the coil 322, and the flexible circuit board 34 structure can effectively disperse stress, so that the flexible circuit board 34 is not easy to break in the vibration process.
The sound generating unit 4 comprises a vibrating diaphragm 41, a voice coil 42 connected with the vibrating diaphragm 41 and used for driving the vibrating diaphragm 41 to vibrate and generate sound, a circuit board 43 used for supplying power to the voice coil 42, and a second shell 44 used for fixing the vibrating diaphragm 41, wherein the voice coil 42 is used for driving the vibrating diaphragm 41 to vibrate and generate sound in the thickness direction of the multifunctional sound generating device 100 under the action of the magnetic circuit system 2.
The diaphragm 41 includes a dome 411 and a ring 412 disposed around the dome 411, and the ring is provided with a fitting portion 413 fitted and fixed to the second housing 44. The voice coil 42 includes a first portion 421 connected to the dome 411 and a second portion 422 inserted into the magnetic gap, and the thickness of the second portion 422 is greater than that of the first portion 421. The circuit board 43 includes a third fixing portion 431 located inside the tub 1 and connected to the voice coil 42, a fourth fixing portion 432 located outside the tub 1 and fixed to the first housing 31, and a transition portion 433 connecting the third fixing portion 431 and the fourth fixing portion 432.
Compared with the related art, the flexible circuit board provided by the utility model comprises the first fixing part, the second fixing part with the height difference with the first fixing part and the connecting part for connecting the first fixing part and the second fixing part, wherein the connecting part is bent and extended obliquely upwards from the end part of the first fixing part, so that the connecting part forms a first protruding part higher than the plane where the first fixing part is located. Simultaneously, this embodiment novel still provides a multi-functional sound generating device, including the basin frame, be fixed in the magnetic circuit of basin frame, be located sound generating unit of magnetic circuit one side and be located the motor unit of magnetic circuit opposite side, the motor unit including have accommodation space and be fixed in the first casing of magnetic circuit, hang in vibrator in the accommodation space, connect the vibrator with the elastic support piece and the flexible circuit board of first casing, the vibrator include the backup pad and be fixed in the coil of backup pad, the flexible circuit board including be located in the accommodation space with the first fixed part that the coil is connected, with be located the second fixed part outside the accommodation space and connect the connecting portion of first fixed part with the connecting portion of second fixed part, connecting portion follow the tip of first fixed part is crooked extension towards oblique top for the connecting portion forms and is higher than the planar first bellying that first fixed part is located. The connecting part of the flexible circuit board is reversely bent and extended at the position connected with the fixing part to form the protruding part, so that the flexible circuit board with the structure can further disperse stress, the service life of the flexible circuit board is prolonged, and meanwhile, the service life of the multifunctional sounding device comprising the flexible circuit board is prolonged.
While the utility model has been described with respect to the above embodiments, it should be noted that modifications can be made by those skilled in the art without departing from the inventive concept, and these are all within the scope of the utility model.
Claims (10)
1. The flexible circuit board comprises a first fixing part, a second fixing part with a height difference with the first fixing part and a connecting part for connecting the first fixing part and the second fixing part, and is characterized in that the connecting part is bent and extended from the end part of the first fixing part to the upper inclined direction, so that the connecting part forms a first protruding part higher than the plane where the first fixing part is located.
2. The flexible circuit board according to claim 1, wherein the connection portion is bent and extended obliquely downward from an end portion of the second fixing portion so that the connection portion forms a second convex portion lower than a plane in which the second fixing portion is located.
3. The flexible circuit board of claim 1, wherein the first boss is an arcuate structure.
4. The flexible circuit board of claim 2 wherein the second raised portion is an arcuate structure.
5. The utility model provides a multi-functional sound generating device, includes basin frame, be fixed in magnetic circuit of basin frame, be located sound generating unit of magnetic circuit one side and be located the motor unit of magnetic circuit opposite side, the motor unit including have accommodation space and be fixed in magnetic circuit's first casing, overhang in oscillator in the accommodation space, connect the oscillator with elastic support piece and the flexible circuit board of first casing, the oscillator includes the backup pad and is fixed in the coil of backup pad, its characterized in that, the flexible circuit board includes be located in accommodation space with the first fixed part that the coil is connected, with be located the second fixed part outside the accommodation space and connect first fixed part with the connecting portion of second fixed part, connecting portion follow the tip of first fixed part is crooked the extension towards oblique top for connecting portion forms the planar first bellying that is higher than first fixed part is located.
6. The multi-functional sound emitting device of claim 5, wherein the connection portion is bent and extended obliquely downward from an end portion of the second fixing portion such that the connection portion forms a second protruding portion lower than a plane in which the second fixing portion is located.
7. The multi-functional sound emitting device of claim 5, wherein the first boss is an arcuate structure.
8. The multi-functional sound emitting device of claim 6, wherein the second protrusion is an arcuate structure.
9. The device of claim 5, wherein the first housing has two sides with hollow portions for the connecting portion to extend out of the receiving space.
10. The device of claim 5, wherein the sound generating unit comprises a diaphragm, a voice coil connected with the diaphragm to drive the diaphragm to vibrate and generate sound, and a circuit board for supplying power to the voice coil, and the circuit board comprises a third fixing part positioned in the frame and connected with the voice coil, a fourth fixing part positioned outside the frame and fixed with the first shell, and a transition part connecting the third fixing part and the fourth fixing part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320226627.3U CN219802650U (en) | 2023-02-16 | 2023-02-16 | Flexible circuit board and multifunctional sounding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320226627.3U CN219802650U (en) | 2023-02-16 | 2023-02-16 | Flexible circuit board and multifunctional sounding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219802650U true CN219802650U (en) | 2023-10-03 |
Family
ID=88187265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320226627.3U Active CN219802650U (en) | 2023-02-16 | 2023-02-16 | Flexible circuit board and multifunctional sounding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219802650U (en) |
-
2023
- 2023-02-16 CN CN202320226627.3U patent/CN219802650U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |