CN111954131A - Flexible circuit board and speaker - Google Patents
Flexible circuit board and speaker Download PDFInfo
- Publication number
- CN111954131A CN111954131A CN202010622343.7A CN202010622343A CN111954131A CN 111954131 A CN111954131 A CN 111954131A CN 202010622343 A CN202010622343 A CN 202010622343A CN 111954131 A CN111954131 A CN 111954131A
- Authority
- CN
- China
- Prior art keywords
- flexible circuit
- circuit board
- installation department
- diaphragm
- magnetic steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
Abstract
The invention provides a flexible circuit board and a loudspeaker, wherein the flexible circuit board comprises a first mounting part, a second mounting part arranged at an interval with the first mounting part, and an elastic arm for connecting the first mounting part and the second mounting part, the first mounting part comprises a supporting part and a reinforcing part extending away from the supporting part along one side of the supporting part, which is close to the second mounting part, the supporting part is provided with a first gluing surface facing towards the reinforcing part, the reinforcing part is provided with a second gluing surface back to the second mounting part, and the first gluing surface is adjacent to the second gluing surface. Through set up reinforcement portion on the supporting part of first installation department, set up the second cemented surface that links to each other with the first cemented surface of supporting part in the reinforcement portion, increase skeleton and flexible circuit board's cemented area, and then strengthen the bonding strength between skeleton and the flexible circuit board, at equipment and vibration in-process, promoted the stability of speaker structure, prolonged the life of speaker.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of speakers, in particular to a flexible circuit board and a speaker.
[ background of the invention ]
With the development of science and technology, more and more electronic devices are built in with sounding devices. Generally, the speaker can provide even strong magnetic field through the magnet steel, makes the voice coil loudspeaker voice coil that leads to there is alternating current vibrate in even strong magnetic field, and voice coil loudspeaker voice coil drive skeleton, and then drives the vibrating diaphragm vibration and makes the speaker produce sound.
Among the prior art, the skeleton is as bearing structure, and its bottom is connected with flexible circuit board (FPC), because the face width is narrower in the connection of skeleton bottom for bonding strength is weak, at assembly and vibration sound production in-process, the skeleton skew appears easily, and the connection between FPC and the skeleton is not hard up, leads to the structure insecure of speaker, influences the stability of speaker performance.
Therefore, there is a need for a new flexible circuit board and speaker.
[ summary of the invention ]
The invention aims to provide a flexible circuit board and a loudspeaker, wherein the flexible circuit board is provided with a reinforcing part, so that the bonding strength between the flexible circuit board and a framework is enhanced, and the stability of the performance of the loudspeaker is ensured.
The technical scheme of the invention is as follows: the utility model provides a flexible circuit board, flexible circuit board include first installation department, with second installation department, the connection that first installation department interval set up first installation department with the elastic arm of second installation department, first installation department includes the supporting part, follows the supporting part is close to second installation department side direction is kept away from the reinforcement portion that the supporting part extends, the supporting part is equipped with the orientation the first cemented surface of reinforcement portion, the reinforcement portion is equipped with dorsad the second cemented surface of second installation department, first cemented surface with the second cemented surface is adjoined.
Preferably, the reinforcing part includes a first reinforcing part and a second reinforcing part which are partially disposed at both ends of the first mounting part, and a third reinforcing part disposed between the first reinforcing part and the second reinforcing part, and the first reinforcing part and the second reinforcing part are symmetrically disposed.
Preferably, the first mounting portion further includes a welding portion extending along a side of the supporting portion away from the reinforcing portion.
Preferably, the elasticity arm includes that the structure is the same and each other is mirror symmetry's a pair of, the elasticity arm include with first stiff end that the first installation department is connected, certainly first stiff end that first stiff end extends, with second stiff end that the second installation department is connected, certainly second linking arm that the second stiff end extends and connection first linking arm with the connecting portion of second linking arm.
Preferably, the first connecting arm and the second connecting arm are both arranged in parallel.
Preferably, the flexible circuit board is of a symmetrical structure, and the symmetry axis of the flexible circuit board is the symmetry axis of the two connecting parts.
The invention also provides a loudspeaker, which comprises a basin frame, and a magnetic circuit system and a vibration system which are accommodated in the basin frame, wherein the vibration system comprises the flexible circuit board and a framework which is connected with the first gluing surface and the second gluing surface of the flexible circuit board in a gluing way, and the second mounting part of the flexible circuit board is fixedly connected with the basin frame.
Preferably, the flexible circuit boards are a pair, and one flexible circuit board is disposed in each of the short axis directions of the speaker.
Preferably, the vibration system further comprises a diaphragm and a voice coil, the voice coil is far away from the framework and abuts against one side of the flexible circuit board, and the voice coil is electrically connected with the welding portion of the flexible circuit board.
Preferably, the vibrating diaphragm comprises an upper vibrating diaphragm and a lower vibrating diaphragm, the upper vibrating diaphragm is connected with the framework and the basin frame, the framework is far away from one side of the flexible circuit board, the lower vibrating diaphragm is connected with the flexible circuit board, and the lower vibrating diaphragm and the upper vibrating diaphragm are arranged at intervals along the vibrating direction.
Preferably, the center of the framework is provided with a yielding opening, the upper vibrating diaphragm comprises a ball top connected with the periphery of the yielding opening and an upper sound diaphragm sleeved outside the ball top at intervals, the upper sound diaphragm is connected with the basin frame and the framework,
the lower vibrating diaphragm comprises a pair of lower sound films which are correspondingly arranged on the flexible circuit board, and the lower sound films are abutted to one side, far away from the upper vibrating diaphragm, of the flexible circuit board.
Preferably, the magnetic circuit system comprises a lower clamping plate, a main magnetic steel assembly and an auxiliary magnetic steel assembly, the main magnetic steel assembly and the auxiliary magnetic steel assembly are arranged on the lower clamping plate, the auxiliary magnetic steel assembly surrounds the main magnetic steel assembly, a magnetic gap is formed between the main magnetic steel assembly and the auxiliary magnetic steel assembly, and the voice coil is arranged in the magnetic gap.
The invention has the beneficial effects that: the invention provides a flexible circuit board and a loudspeaker, wherein the flexible circuit board comprises a first mounting part, a second mounting part arranged at an interval with the first mounting part, and an elastic arm for connecting the first mounting part and the second mounting part, the first mounting part comprises a supporting part and a reinforcing part extending away from the supporting part along one side of the supporting part, which is close to the second mounting part, the supporting part is provided with a first gluing surface facing towards the reinforcing part, the reinforcing part is provided with a second gluing surface back to the second mounting part, and the first gluing surface is adjacent to the second gluing surface. Through set up reinforcement portion on the supporting part of first installation department, set up the second cemented surface that links to each other with the first cemented surface of supporting part in the reinforcement portion, increase skeleton and flexible circuit board's veneer area, and then effectively strengthen the veneer intensity between skeleton and the flexible circuit board, at equipment and vibration sound production in-process, promoted the stability of speaker structure, prolonged the life of speaker.
[ description of the drawings ]
FIG. 1 is a schematic structural diagram of a flexible printed circuit board according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a speaker according to an embodiment of the present invention;
fig. 3 is a partially exploded view of the loudspeaker of fig. 2;
fig. 4 is an exploded view of the speaker of fig. 2;
fig. 5 is a cross-sectional view of the loudspeaker of fig. 2 taken along the line a-a.
Description of the drawings: a flexible circuit board 100; a first mounting portion 110; a support portion 111; a reinforcing portion 112; a first reinforcing portion 1121; the second reinforcing portion 1122; a third reinforcing portion 1123; a welding portion 113; a second mounting portion 120; a tension arm 130; a first fixed end 131; a first connecting arm 132; a second fixed end 133; a second connecting arm 134; a connecting portion 135; a first gluing surface M; a second gluing surface N; an axis of symmetry a; a speaker 200; a basin stand 1; a magnetic circuit system 2; a main magnet steel assembly 21; a secondary magnetic steel assembly 22; a lower clamp plate 23; a vibration system 3; a voice coil 31; a lead line 311; a skeleton 32; a support table 321; a side wall 322; a yield opening 323; an upper diaphragm 33; an upper sound film 331; a dome 332; a lower sound diaphragm 34.
[ detailed description ] embodiments
The invention is further described with reference to the following figures and embodiments.
Referring to fig. 1, the present invention provides a flexible circuit board 100, wherein the flexible circuit board 100 includes a first mounting portion 110, a second mounting portion 120 spaced apart from the first mounting portion 110, and a resilient arm 130 connecting the first mounting portion 110 and the second mounting portion 120. The first installation part 110 includes a support part 111 and a reinforcement part 112 extending from one side of the support part 111 close to the second installation part 120 toward the direction far away from the support part 111, the support part 111 is provided with a first gluing surface M facing the reinforcement part 112, the reinforcement part 112 is provided with a second gluing surface N facing away from the second installation part 120, and the first gluing surface M is adjacent to the second gluing surface N. Optionally, the reinforcing portion 112 includes a first reinforcing portion 111 and a second reinforcing portion 112 respectively disposed at two ends of the first mounting portion 110, and a third reinforcing portion 1123 disposed between the first reinforcing portion 1121 and the second reinforcing portion 1122. The first reinforcing portion 1121 and the second reinforcing portion 1122 are provided symmetrically with respect to the symmetry axis a, and the third reinforcing portion 1123 has an axisymmetrical structure with respect to the symmetry axis a. In the embodiment of the present invention, the reinforcing portion 112 includes the first reinforcing portion 1121, the third reinforcing portion 1123, and the second reinforcing portion 1122 that are sequentially disposed at intervals on the first mounting portion 110, and in practical applications, the reinforcing portion 112 may be a continuous reinforcing structure disposed on the first mounting portion 110.
According to the flexible circuit board 100 of the embodiment of the invention, the reinforcing part 112 is arranged on the supporting part 111 of the first mounting part 110, the second gluing surface N connected with the first gluing surface M of the supporting part 111 is arranged on the reinforcing part 112, so that the gluing area of the framework 1 and the flexible circuit board 100 is increased, the gluing strength between the framework 1 and the flexible circuit board 100 is further effectively enhanced, the structural stability of the loudspeaker 200 is improved in the assembling and vibration sounding processes, and the service life of the loudspeaker 200 is prolonged.
In an alternative embodiment, the side of the supporting portion 111 away from the reinforcing portion 112 is provided with a welding portion 113. Alternatively, the welding portion 113 is a welding table extending from the support portion 111 toward a direction away from the reinforcing portion 112.
In an alternative embodiment, the elastic arms 130 include a pair of elastic arms 130 having the same structure and being mirror-symmetrical to each other with respect to the symmetry axis a, each of the elastic arms 130 includes a first fixed end 131 connected to the first mounting portion 110, a first connecting arm 132 extending from the first fixed end 131, a second fixed end 133 connected to the second mounting portion 120, a second connecting arm 134 extending from the second fixed end 133, and a connecting portion 135 connecting the first connecting arm 132 and the second connecting arm 134, and two connecting portions 135 of a pair of elastic arms 130 are disposed at an interval. Optionally, the first connecting arm 132 is disposed in parallel with the second connecting arm 134. The flexible circuit board 100 has a symmetrical structure with a symmetry axis a located at a space between two opposite connection portions 135.
Referring to fig. 1, 2 and 5, the present invention further provides a speaker 200, the speaker 200 includes a frame 1, and a magnetic circuit system 2 and a vibration system 3 accommodated in the frame 1, the magnetic circuit system 2 drives the vibration system 3 to vibrate, the vibration system 3 includes the flexible circuit board 100 and the frame 32 connected to the first mounting portion 110 of the flexible circuit board 100, and the second mounting portion 120 of the flexible circuit board 100 is connected to the frame 1. The frame 32 is respectively connected to the first gluing surface M and the second gluing surface N of the first mounting portion 110 by gluing. In an alternative embodiment, the flexible circuit boards 100 are a pair, and one flexible circuit board 100 is disposed in each of the short axis directions of the speaker 200. In this embodiment, the frame 32 includes a support stage 321 having an abdicating opening 323 and two sidewalls 322 extending from the bottom of the support stage 321 toward the flexible circuit board 100, the sidewalls 322 include two sidewalls corresponding to the flexible circuit board 100, and the sidewalls 322 are respectively connected to the first gluing surface M and the second gluing surface N by gluing.
In an alternative embodiment, referring to fig. 1 and fig. 5, the vibration system 3 further includes a diaphragm and a voice coil 31 abutting against a side of the support 321 close to the flexible circuit board 100, and the voice coil 31 drives the diaphragm to vibrate to generate sound. The voice coil 31 includes a lead 311, and the lead 311 is soldered to the soldering portion 113 of the first mounting portion 110.
In an alternative embodiment, referring to fig. 2-5, the diaphragms include an upper diaphragm 33 connected to the support base 321 and a lower diaphragm connected to the flexible circuit board 100 on a side of the frame 1 away from the flexible circuit board 100. Optionally, the upper diaphragm 33 or the lower diaphragm may be a complete sound film, or a sound film and a dome. In this embodiment, the upper diaphragm 33 includes a dome 332 connected to the periphery of the abdicating opening 323 and an upper sound film 331 spaced and sleeved outside the dome 332, and the upper sound film 331 is connected between the basin stand 1 and the support platform 321. The lower diaphragm includes a pair of lower sound films 34 corresponding to the flexible circuit board 100, and the lower sound films 34 are abutted to the side of the flexible circuit board 100 away from the upper diaphragm 33.
In an alternative embodiment, referring to fig. 3-5, the magnetic circuit system 2 includes a lower plate 23, a primary magnetic steel assembly 21 and a secondary magnetic steel assembly 22 disposed on the lower plate 23. The secondary magnetic steel component 22 is arranged around the primary magnetic steel component 21, a magnetic gap is formed between the primary magnetic steel component 21 and the secondary magnetic steel component 22, and the voice coil 31 is arranged in the magnetic gap. Optionally, the auxiliary magnetic steel assemblies 22 may be integrally formed to surround the main magnetic steel assembly 21, or the main magnetic steel assembly 21 may be surrounded by 4 groups of auxiliary magnetic steel assemblies 22 at intervals, or the main magnetic steel assembly 21 may be surrounded by 2 groups of auxiliary magnetic steel assemblies 22 at intervals. In the present embodiment, the secondary magnet assembly 22 is integrally formed.
While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.
Claims (12)
1. The utility model provides a flexible circuit board, its characterized in that, flexible circuit board include first installation department, with second installation department, the connection that first installation department interval set up first installation department with the elastic arm of second installation department, first installation department includes the supporting part, follows the supporting part is close to second installation department side direction is kept away from the reinforcement portion that the supporting part extends, the supporting part is equipped with the orientation the first cemented surface of reinforcement portion, the reinforcement portion is equipped with dorsad the second cemented surface of second installation department, first cemented surface with the second cemented surface is adjoined to.
2. The flexible circuit board of claim 1, wherein the reinforcing portion comprises a first reinforcing portion and a second reinforcing portion disposed at two ends of the first mounting portion, and a third reinforcing portion disposed between the first reinforcing portion and the second reinforcing portion, and the first reinforcing portion and the second reinforcing portion are symmetrically disposed.
3. The flexible circuit board of claim 2, wherein the first mounting portion further comprises a solder portion extending along a side of the supporting portion away from the reinforcing portion.
4. The flexible circuit board of claim 3, wherein the elastic arm comprises a pair of elastic arms having the same structure and being mirror-symmetrical to each other, and the elastic arm comprises a first fixed end connected to the first mounting portion, a first connecting arm extending from the first fixed end, a second fixed end connected to the second mounting portion, a second connecting arm extending from the second fixed end, and a connecting portion connecting the first connecting arm and the second connecting arm.
5. The flexible circuit board of claim 4, wherein the first connecting arm and the second connecting arm are both disposed in parallel.
6. The flexible circuit board according to claim 4, wherein the flexible circuit board has a symmetrical structure, and a symmetry axis of the flexible circuit board is a symmetry axis of the two connection portions.
7. A loudspeaker, characterized in that, the loudspeaker includes the basin frame and accommodates magnetic circuit system and vibration system in the said basin frame, the said vibration system includes the flexible circuit board and skeleton that is connected with first cemented surface and second cemented surface of the said flexible circuit board according to any claim 1-6, the second installation department of the said flexible circuit board is with the said basin frame building in.
8. The speaker of claim 7, wherein the flexible circuit boards are a pair, and one of the flexible circuit boards is disposed in a direction of a short axis of the speaker.
9. The loudspeaker of claim 8, wherein the vibration system further comprises a diaphragm and a voice coil abutting against a side of the frame remote from the flexible circuit board, the voice coil being electrically connected to the soldering portion of the flexible circuit board.
10. The loudspeaker of claim 9, wherein the diaphragm comprises an upper diaphragm connected to the frame and the basin frame on a side away from the flexible circuit board, and a lower diaphragm connected to the flexible circuit board, the lower diaphragm and the upper diaphragm being spaced apart in a vibration direction.
11. The loudspeaker of claim 10, wherein the frame has a abdication opening at the center, the upper diaphragm comprises a dome connected to the periphery of the abdication opening and an upper diaphragm sleeved outside the dome at a distance, the upper diaphragm connects the frame and the frame,
the lower vibrating diaphragm comprises a pair of lower sound films which are correspondingly arranged on the flexible circuit board, and the lower sound films are abutted to one side, far away from the upper vibrating diaphragm, of the flexible circuit board.
12. The loudspeaker of claim 9, wherein the magnetic circuit system comprises a lower clamp plate, a primary magnetic steel component and a secondary magnetic steel component, the primary magnetic steel component and the secondary magnetic steel component are arranged on the lower clamp plate, the secondary magnetic steel component is arranged around the primary magnetic steel component, a magnetic gap is formed between the primary magnetic steel component and the secondary magnetic steel component, and the voice coil is arranged in the magnetic gap.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010622343.7A CN111954131A (en) | 2020-06-30 | 2020-06-30 | Flexible circuit board and speaker |
| PCT/CN2020/103801 WO2022000632A1 (en) | 2020-06-30 | 2020-07-23 | Flexible circuit board and loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010622343.7A CN111954131A (en) | 2020-06-30 | 2020-06-30 | Flexible circuit board and speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111954131A true CN111954131A (en) | 2020-11-17 |
Family
ID=73337365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010622343.7A Pending CN111954131A (en) | 2020-06-30 | 2020-06-30 | Flexible circuit board and speaker |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111954131A (en) |
| WO (1) | WO2022000632A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112929799A (en) * | 2021-01-20 | 2021-06-08 | 武汉华星光电半导体显示技术有限公司 | Vibration sounding assembly and display device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180027335A1 (en) * | 2016-07-20 | 2018-01-25 | AAC Technologies Pte. Ltd. | Miniature Sounding Device |
| CN209526871U (en) * | 2018-12-29 | 2019-10-22 | 瑞声科技(新加坡)有限公司 | Microphone device |
| CN209659599U (en) * | 2018-12-31 | 2019-11-19 | 瑞声科技(新加坡)有限公司 | Loudspeaker |
| CN110662139A (en) * | 2019-09-30 | 2020-01-07 | 歌尔股份有限公司 | Sound production device and auxiliary vibration method |
| CN110784803A (en) * | 2019-12-31 | 2020-02-11 | 共达电声股份有限公司 | Flexible circuit board and loudspeaker |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103200472A (en) * | 2013-02-26 | 2013-07-10 | 广东欧珀移动通信有限公司 | Piezoelectric ceramic speaker and mobile terminal |
| JP2019140356A (en) * | 2018-02-15 | 2019-08-22 | シャープ株式会社 | Flexible circuit board |
| CN208798196U (en) * | 2018-08-03 | 2019-04-26 | 瑞声科技(新加坡)有限公司 | Flexible circuit board and loudspeaker with the flexible circuit board |
| CN208638647U (en) * | 2018-08-05 | 2019-03-22 | 瑞声科技(新加坡)有限公司 | Loudspeaker mould group |
| CN209897263U (en) * | 2019-04-29 | 2020-01-03 | 瑞声科技(新加坡)有限公司 | Sound production monomer and speaker |
-
2020
- 2020-06-30 CN CN202010622343.7A patent/CN111954131A/en active Pending
- 2020-07-23 WO PCT/CN2020/103801 patent/WO2022000632A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180027335A1 (en) * | 2016-07-20 | 2018-01-25 | AAC Technologies Pte. Ltd. | Miniature Sounding Device |
| CN209526871U (en) * | 2018-12-29 | 2019-10-22 | 瑞声科技(新加坡)有限公司 | Microphone device |
| CN209659599U (en) * | 2018-12-31 | 2019-11-19 | 瑞声科技(新加坡)有限公司 | Loudspeaker |
| CN110662139A (en) * | 2019-09-30 | 2020-01-07 | 歌尔股份有限公司 | Sound production device and auxiliary vibration method |
| CN110784803A (en) * | 2019-12-31 | 2020-02-11 | 共达电声股份有限公司 | Flexible circuit board and loudspeaker |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112929799A (en) * | 2021-01-20 | 2021-06-08 | 武汉华星光电半导体显示技术有限公司 | Vibration sounding assembly and display device |
| CN112929799B (en) * | 2021-01-20 | 2022-11-01 | 武汉华星光电半导体显示技术有限公司 | Vibration sounding assembly and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022000632A1 (en) | 2022-01-06 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20201117 |