Sound production device
阅读说明:本技术 发声器件 (Sound production device ) 是由 张古清 于 2020-05-08 设计创作,主要内容包括:本发明提供了一种发声器件,其包括盆架、振动系统及磁路系统;振动系统包括振膜、音圈及弹性支撑组件;磁路系统包括磁轭、主磁钢、第一副磁钢及第二副磁钢,第一副磁钢、第二副磁钢均与主磁钢间隔并共同围成磁间隙,弹性支撑组件包括弹性件,弹性件包括第一固定臂、相互间隔设置的两个第二固定臂及两个弹臂,第一固定臂、第二固定臂以及弹臂共同围成朝向所述主磁钢方向呈开口状的容纳空间,第二副磁钢收容于容纳空间;第二副磁钢向主磁钢方向延伸,和/或主磁钢向第二副磁钢方向延伸,以使得磁间隙靠近第二副磁钢的部分与磁间隙靠近第一副磁钢的部分的宽度相同。与相关技术相比,本发明的发声器件的灵敏度高且声学性能更好。(The invention provides a sounding device, which comprises a basin frame, a vibration system and a magnetic circuit system, wherein the basin frame is provided with a basin opening; the vibration system comprises a vibrating diaphragm, a voice coil and an elastic supporting component; the magnetic circuit system comprises a magnetic yoke, main magnetic steel, first auxiliary magnetic steel and second auxiliary magnetic steel, the first auxiliary magnetic steel and the second auxiliary magnetic steel are spaced from the main magnetic steel and jointly enclose a magnetic gap, the elastic support assembly comprises an elastic piece, the elastic piece comprises a first fixed arm, two second fixed arms and two elastic arms, the two second fixed arms and the two elastic arms are arranged at intervals, the first fixed arm, the second fixed arm and the elastic arms jointly enclose an accommodating space which is open towards the direction of the main magnetic steel, and the second auxiliary magnetic steel is accommodated in the accommodating space; the second secondary magnetic steel extends towards the main magnetic steel direction, and/or the main magnetic steel extends towards the second secondary magnetic steel direction, so that the part of the magnetic gap close to the second secondary magnetic steel is the same as the width of the part of the magnetic gap close to the first secondary magnetic steel. Compared with the related art, the sound production device is high in sensitivity and better in acoustic performance.)
1. A sounding device comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system and the magnetic circuit system are respectively fixed on the basin frame; the vibration system comprises a vibrating diaphragm fixed on the basin frame, a voice coil inserted in the magnetic gap to drive the vibrating diaphragm to vibrate and sound, and an elastic support assembly fixed on the basin frame and connected with one end, far away from the vibrating diaphragm, of the voice coil; the magnetic circuit system comprises a magnetic yoke, main magnetic steel fixed on the magnetic yoke, two first auxiliary magnetic steels respectively positioned at two opposite sides of the main magnetic steel and two second auxiliary magnetic steels respectively positioned at the other two opposite sides of the main magnetic steel, the first auxiliary magnetic steel and the second auxiliary magnetic steel are both spaced from the main magnetic steel and jointly enclose a magnetic gap, and the elastic support component comprises elastic pieces positioned at two opposite sides of the main magnetic steel and spaced from the second auxiliary magnetic steel; it is characterized in that the preparation method is characterized in that,
the elastic piece comprises a first fixed arm fixed on the basin frame, two second fixed arms connected with the voice coil and arranged at intervals, and two elastic arms respectively connecting the two second fixed arms to the first fixed arm, the second fixed arm and the elastic arms jointly enclose an accommodating space which is open towards the direction of the main magnetic steel, and the second auxiliary magnetic steel is accommodated in the accommodating space;
the second secondary magnetic steel extends towards the main magnetic steel, and/or the main magnetic steel extends towards the second secondary magnetic steel, so that the width of the part of the magnetic gap close to the second secondary magnetic steel is the same as that of the part of the magnetic gap close to the first secondary magnetic steel.
2. The sound production device as claimed in claim 1, wherein the main magnetic steel comprises a main magnetic steel body and protrusions protruding from two opposite sides of the main magnetic steel body, and the protrusions are opposite to and spaced apart from the second secondary magnetic steel.
3. The sound production device as claimed in claim 2, wherein the magnetic circuit system further comprises a main pole piece fixed on a side of the main magnetic steel close to the vibration system, and a projection of the main pole piece to the main magnetic steel along the vibration direction of the diaphragm completely coincides with the main magnetic steel.
4. The sound production device as claimed in claim 1, wherein the main magnet is rectangular, two first secondary magnets are located on opposite sides of the major axis of the main magnet, and two second secondary magnets are located on opposite sides of the minor axis of the main magnet.
5. The sound production device of claim 4, wherein the resilient support assembly comprises two and respectively located on opposite sides of the minor axis of the main magnet.
6. The sounding device according to claim 5, wherein the elastic member is a flexible circuit, and each of the elastic support assemblies further comprises an auxiliary diaphragm attached and fixed to the elastic member on a side close to the diaphragm.
7. The sounding device according to claim 6, wherein the auxiliary diaphragm comprises a first fixing portion fixed to the first fixing arm, two second fixing portions fixed to the two second fixing arms, and two bending portions respectively connecting the two second fixing portions to the first fixing portion, and a cross section of each bending portion has an arc-shaped structure protruding in a direction of the diaphragm.
8. The sounder device according to claim 6, wherein the voice coil is electrically connected to the spring.
9. The sounding device according to claim 1, wherein the magnetic circuit system further comprises a top plate, the top plate comprises a ring-shaped fixing ring fixed to the frame, two first secondary pole cores extending from the fixing ring to the first secondary magnetic steel, and two second secondary pole cores extending from the fixing ring to the second secondary magnetic steel, the two first secondary pole cores are respectively stacked and fixed to the two first secondary magnetic steels, and the two second secondary pole cores are respectively stacked and fixed to the two second secondary magnetic steels.
10. The sounding device according to claim 1, wherein the voice coil comprises a voice coil body fixed to the diaphragm and a voice coil fixing portion extending from the voice coil body away from the diaphragm and fixed to the elastic support assembly, and a thickness of the voice coil fixing portion in a direction perpendicular to a vibration direction of the diaphragm is greater than a thickness of the voice coil body.
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of electroacoustic conversion, in particular to a sounding device applied to an electronic sound box product.
[ background of the invention ]
With the advent of the mobile internet age, the number of smart mobile devices is increasing. Among the mobile devices, the mobile phone is undoubtedly the most common and portable mobile terminal device. At present, the functions of mobile phones are very diverse, one of them is a high-quality music function, and therefore, a sound generating device for playing sound is widely applied to the current smart mobile devices.
[ summary of the invention ]
The invention aims to provide a sounding device with high sensitivity and better acoustic performance.
In order to achieve the above object, the present invention provides a sound production device, which comprises a frame, a vibration system and a magnetic circuit system, wherein the vibration system and the magnetic circuit system are respectively fixed on the frame; the vibration system comprises a vibrating diaphragm fixed on the basin frame, a voice coil inserted in the magnetic gap to drive the vibrating diaphragm to vibrate and sound, and an elastic support assembly fixed on the basin frame and connected with one end, far away from the vibrating diaphragm, of the voice coil; the magnetic circuit system comprises a magnetic yoke, main magnetic steel fixed on the magnetic yoke, two first auxiliary magnetic steels respectively positioned at two opposite sides of the main magnetic steel and two second auxiliary magnetic steels respectively positioned at the other two opposite sides of the main magnetic steel, the first auxiliary magnetic steel and the second auxiliary magnetic steel are both spaced from the main magnetic steel and jointly enclose a magnetic gap, and the elastic support component comprises elastic pieces positioned at two opposite sides of the main magnetic steel and spaced from the second auxiliary magnetic steel;
the elastic piece comprises a first fixed arm fixed on the basin frame, two second fixed arms connected with the voice coil and arranged at intervals, and two elastic arms respectively connecting the two second fixed arms to the first fixed arm, the second fixed arm and the elastic arms jointly enclose an accommodating space which is open towards the direction of the main magnetic steel, and the second auxiliary magnetic steel is accommodated in the accommodating space;
the second secondary magnetic steel extends towards the main magnetic steel, and/or the main magnetic steel extends towards the second secondary magnetic steel, so that the width of the part of the magnetic gap close to the second secondary magnetic steel is the same as that of the part of the magnetic gap close to the first secondary magnetic steel.
Preferably, the main magnetic steel comprises a main magnetic steel body and a protruding part protruding and extending from two opposite sides of the main magnetic steel body, and the protruding part is opposite to the second secondary magnetic steel and is arranged at an interval.
Preferably, the magnetic circuit system further includes a main pole core fixed to one side of the main magnetic steel, which is close to the vibration system, and the projection of the main pole core to the main magnetic steel along the vibration direction of the diaphragm completely coincides with the main magnetic steel.
Preferably, the main magnetic steel is rectangular, the two first auxiliary magnetic steels are respectively located on two opposite sides of the long axis of the main magnetic steel, and the two second auxiliary magnetic steels are respectively located on two opposite sides of the short axis of the main magnetic steel.
Preferably, the elastic support assembly comprises two parts which are respectively positioned at two opposite sides of the short axis of the main magnetic steel.
Preferably, the elastic member is a flexible circuit, and each of the elastic support assemblies further includes an auxiliary diaphragm attached and fixed to the elastic member at a side close to the diaphragm.
Preferably, the auxiliary diaphragm includes a first fixed portion fixed to the first fixed arm, two second fixed portions fixed to the second fixed arm, and two ring-folding portions respectively connecting the two second fixed portions to the first fixed portion, and a cross section of the ring-folding portion is in an arc-shaped structure protruding in the direction of the diaphragm. ,
preferably, the voice coil is electrically connected to the elastic member.
Preferably, magnetic circuit still includes the punch holder, the punch holder is including being fixed in the basin frame be annular solid fixed ring, by fixed ring is to two first auxiliary pole cores that first auxiliary magnetic steel extends and by fixed ring is to two second auxiliary pole cores that the second auxiliary magnetic steel extends, two first auxiliary pole cores fold respectively and establish and be fixed in two first auxiliary magnetic steel, two the second auxiliary pole core folds respectively and establishes and be fixed in two the second auxiliary magnetic steel.
Preferably, the voice coil includes the voice coil body that is fixed in the vibrating diaphragm and by the voice coil body is to keeping away from the vibrating diaphragm extends and is fixed in the voice coil fixed part of elastic support subassembly, along the perpendicular to of the vibration direction of vibrating diaphragm the thickness of voice coil fixed part is greater than the thickness of voice coil body.
Compared with the prior art, the sound production device is provided with the main magnetic steel fixed on the magnetic yoke, and the two first auxiliary magnetic steels and the two second auxiliary magnetic steels which are arranged on the peripheral sides of the main magnetic steel, and the second auxiliary magnetic steel extends towards the main magnetic steel direction, and/or the main magnetic steel extends towards the second auxiliary magnetic steel direction, so that the width of the part of the magnetic gap close to the second auxiliary magnetic steel is the same as that of the part of the magnetic gap close to the first auxiliary magnetic steel. The structure means that the intervals of the formed magnetic gaps are the same, the width of the magnetic gaps on the long and short axis sides of the main magnetic steel is consistent, the sensitivity of the sounding device is high, and the acoustic performance of the sounding device is excellent. In addition, and include the elastic component with the elastic support subassembly, the first fixed arm of elastic component, second fixed arm and bullet arm enclose jointly and are the accommodation space of open form towards main magnet steel direction, and the vice magnet steel of second is acceptd in accommodation space, this structure makes the vice magnet steel of second or main magnet steel not limit blocking of second fixed arm, then the vice magnet steel of second can extend to main magnet steel direction, or main magnet steel can extend to the vice magnet steel of second, in order to reduce the magnetic gap width, the magnetic gap width that realizes the major and minor axis limit of main magnet steel is unanimous, thereby make magnetic circuit magnetic field maximize, make sound production device acoustic performance excellent.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic perspective view of a sound device according to the present invention;
FIG. 2 is an exploded perspective view of a sound device according to the present invention;
FIG. 3 is a sectional view taken along line A-A of FIG. 1;
FIG. 4 is an enlarged view of the portion indicated by B in FIG. 3;
FIG. 5 is a schematic perspective view of a voice coil of a sound device according to the present invention;
FIG. 6 is a schematic perspective view of an elastic support assembly of the sound device of the present invention;
FIG. 7 is a schematic perspective view of a main magnet of the sound device of the present invention;
FIG. 8 is a schematic perspective view of an upper plate of the sound device of the present invention;
FIG. 9 is a schematic view of an assembled three-dimensional structure of the sound device of the present invention with the diaphragm, the frame and the upper clamping plate removed;
fig. 10 is a schematic assembled perspective view of the sound device of the present invention with the yoke and the elastic member removed.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-10, the present invention provides a
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Compared with the prior art, the sound production device is provided with the main magnetic steel fixed on the magnetic yoke, and the two first auxiliary magnetic steels and the two second auxiliary magnetic steels which are arranged on the peripheral sides of the main magnetic steel, and the second auxiliary magnetic steel extends towards the main magnetic steel direction, and/or the main magnetic steel extends towards the second auxiliary magnetic steel direction, so that the width of the part of the magnetic gap close to the second auxiliary magnetic steel is the same as that of the part of the magnetic gap close to the first auxiliary magnetic steel. The structure means that the intervals of the formed magnetic gaps are the same, the width of the magnetic gaps on the long and short axis sides of the main magnetic steel is consistent, the sensitivity of the sounding device is high, and the acoustic performance of the sounding device is excellent. In addition, and include the elastic component with the elastic support subassembly, the first fixed arm of elastic component, second fixed arm and bullet arm enclose jointly and are the accommodation space of open form towards main magnet steel direction, and the vice magnet steel of second is acceptd in accommodation space, this structure makes the vice magnet steel of second or main magnet steel not limit blocking of second fixed arm, then the vice magnet steel of second can extend to main magnet steel direction, or main magnet steel can extend to the vice magnet steel of second, in order to reduce the magnetic gap width, the magnetic gap width that realizes the major and minor axis limit of main magnet steel is unanimous, thereby make magnetic circuit magnetic field maximize, make sound production device acoustic performance excellent.
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.
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