CN204131723U - Loud speaker - Google Patents
Loud speaker Download PDFInfo
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- CN204131723U CN204131723U CN201420623313.8U CN201420623313U CN204131723U CN 204131723 U CN204131723 U CN 204131723U CN 201420623313 U CN201420623313 U CN 201420623313U CN 204131723 U CN204131723 U CN 204131723U
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- loud speaker
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Abstract
The utility model discloses a kind of loud speaker, relate to electro-acoustic product technical field, comprise shell, vibrational system and magnetic circuit system is contained in described shell, described magnetic circuit system comprises the magnet and magnetic conductive part that combine, at least one parts in described magnet and described magnetic conductive part are provided with some and crack, and the degree of depth of cracking described in each bar extends all in the horizontal direction, and the length of cracking described in each bar all vertically extends.The utility model loud speaker solves the technical problems such as loudspeaker assembly in prior art is many, cost is high, assembly difficulty is large, the utility model loud speaker is while solving the technical problem such as eddy current loss and second harmonic distortion, also there are parts few, production cost is low, assemble the advantages such as simple to operation, production efficiency is high, product qualified rate is high, and acoustical behavior is excellent.
Description
Technical field
The utility model relates to electro-acoustic product technical field, particularly a kind of loud speaker.
Background technology
Loud speaker is a kind of acoustic element, for completing the conversion between the signal of telecommunication and voice signal, is a kind of energy conversion device.Loud speaker comprises shell, vibrational system and magnetic circuit system is contained in shell, vibrational system comprise combine ring, connector, ball top, skeleton voice coil loudspeaker voice coil and play ripple, magnetic circuit system comprises the washer, magnet and the magnetic conductive part that combine, washer and be provided with magnetic gap between magnet and magnetic conductive part, skeleton voice coil loudspeaker voice coil is wound with overhang and is positioned at magnetic gap, and skeleton voice coil loudspeaker voice coil moves up and down in magnetic gap according to by the sound wave signal of telecommunication in its coil.Induced electromotive force can be produced while skeleton voice coil loudspeaker voice coil moves up and down in magnetic field, the electric current of sound wave signals and induced electromotive force can produce a modulated magnetic field, this modulated magnetic field can produce eddy current in washer, magnet and magnetic conductive part, the energy in loss magnetic field, make the second harmonic distortion of loud speaker simultaneously, affect the acoustical behavior of loud speaker.
The main method solved the problem at present installs short-circuited conducting sleeve in loud speaker, although short-circuited conducting sleeve eliminates above-mentioned defect, but which increase the internal part of loud speaker, add production cost, also add complexity and the difficulty of loud speaker assembling simultaneously, increase the probability of assembling bad generation, reduce production efficiency and the product qualified rate of loud speaker.
Utility model content
For above defect, technical problem to be solved in the utility model is to provide a kind of loud speaker, and this loud speaker does not need to increase short-circuited conducting sleeve just can solve in magnet the technical problem producing eddy current and second harmonic distortion, also has parts few simultaneously, cost is low, assembles advantage simple to operation.
For solving the problems of the technologies described above, the technical solution of the utility model is:
A kind of loud speaker, comprise shell, vibrational system and magnetic circuit system is contained in described shell, described magnetic circuit system comprises the magnet and magnetic conductive part that combine, at least one parts in described magnet and described magnetic conductive part are provided with some and crack, the degree of depth of cracking described in each bar extends all in the horizontal direction, and the length of cracking described in each bar all vertically extends.
Wherein, to crack described in each bar equally spaced being distributed on each described parts.
Wherein, each described parts are circle or circular ring structure, and the extended line cracked described in each bar is in the depth direction all crossing with the axis of rotation of corresponding described parts.
Wherein, the depth of cracking described on same described parts is arranged alternately.
Wherein, being located at cracks described on described magnetic conductive part and described magnet all runs through described magnetic conductive part and described magnet in the longitudinal direction.
As a kind of execution mode, described magnetic conductive part comprises T iron and washer, cracks described in described T iron is provided with, and cracks and extend to center by the outward flange of described T iron in the depth direction described in each bar, and extends on the boss of described T iron; Crack described in each bar and all run through described T iron in the longitudinal direction.
Wherein, described washer is circular ring structure, cracks described in described washer is provided with, and cracks and extend to outward flange by the inward flange of described washer in the depth direction described in each bar.
As another kind of execution mode, described magnetic conductive part comprises frame and washer, crack described in described frame is provided with, crack described in each bar and all run through the annular sidewall of described frame in the depth direction, crack described in each bar and extend to blind end by the openend of described frame in the longitudinal direction.
Wherein, described washer is circular configuration, cracks described in described washer is provided with, and cracks and extend to center by the outward flange of described washer in the depth direction described in each bar.
After have employed technique scheme, the beneficial effects of the utility model are:
Due to the utility model loud speaker involving vibrations system and magnetic circuit system, magnetic circuit system comprises the magnet and magnetic conductive part that combine, at least one parts in magnet and magnetic conductive part are provided with some and crack, the degree of depth that each bar cracks extends all in the horizontal direction, and the length that each bar cracks all vertically extends.What crack arranges the loop having cut off eddy current, prevents the formation of most eddy current, effectively reduces the eddy current loss on magnetic conductive part, improves the efficiency of loud speaker at high frequency, reduces second harmonic distortion, improve the acoustical behavior of loud speaker.Instead of short-circuited conducting sleeve of the prior art by arranging to crack on magnetic conductive part, decreasing the internal part of loud speaker, reducing production cost, simplifying the assembly technology of loud speaker simultaneously, effectively raising production efficiency and the product qualified rate of loud speaker.
Because the depth of cracking on magnetic conductive part is arranged alternately, the impact of cracking on original Distribution of Magnetic Field can also be reduced to greatest extent while effectively reducing magnetic conductive part eddy current loss, improve the acoustical behavior of loud speaker to greatest extent.
In sum, the utility model loud speaker solves the technical problems such as loudspeaker assembly in prior art is many, cost is high, assembly difficulty is large, the utility model loud speaker is while solving the technical problem such as eddy current loss and second harmonic distortion, also there are parts few, production cost is low, assemble the advantages such as simple to operation, production efficiency is high, product qualified rate is high, and acoustical behavior is excellent.
Accompanying drawing explanation
Fig. 1 is the stereo decomposing structural representation of the utility model loudspeaker embodiment one;
Fig. 2 is that the constitutional diagram-T iron of Fig. 1 is upper;
Fig. 3 is the A-A line cutaway view of Fig. 2;
Fig. 4 is the plan structure schematic diagram of T iron in Fig. 1;
Fig. 5 is the plan structure schematic diagram of washer in Fig. 1;
Fig. 6 is the stereo decomposing structural representation of the utility model loudspeaker embodiment two;
Fig. 7 is the constitutional diagram of Fig. 6;
Fig. 8 is the B-B line cutaway view of Fig. 7;
In figure: 10, shell, 20, ring, 22, connector, 24, ball top, 26, play ripple, 28, skeleton voice coil loudspeaker voice coil, 30a, washer, 30b, washer, 300a, crack, 300b, to crack, 32a, magnet, 32b, magnet, 34, T iron, 340, crack, 36, frame, 360, crack, 362, groove, 40, electrical connector.
Embodiment
Below in conjunction with drawings and Examples, set forth the utility model further.
The orientation related in this specification all refers to the direction of the vibrational system of loud speaker, under orientation, all refer to the direction of the magnetic circuit system of loud speaker; The inward flange related in this specification all depends on the position of nearly speaker center axis, and outward flange all depends on the position of nearly loudspeaker edge; The horizontal direction related in this specification and vertical direction all refer to the magnetic circuit of loudspeaker under, the orientation of vibrational system when upper horizontal positioned.
Embodiment one:
As shown in Figure 1, Figure 2 with Fig. 3 jointly shown in, a kind of loud speaker is circular configuration, comprises the shell 10 of the circular ring structure of a both ends open, and the inside of shell 10 contains vibrational system and magnetic circuit system.Vibrational system comprises outward flange and is fixed on ring 20 on shell 10 upper surface, the inward flange of ring 20 is fixed with the little circular connector 22 of the large one end open of one end open, one end that connector 22 opening is large connects ring 20, one end that connector 22 opening is little is connected with ball top 24, ball top 24 is fixed with skeleton voice coil loudspeaker voice coil 28, the periphery of skeleton voice coil loudspeaker voice coil 28 is fixed with and plays ripple 26, the outward flange playing ripple 26 is fixed on shell 10, the one ends wound of skeleton voice coil loudspeaker voice coil 28 has coil, one end that skeleton voice coil loudspeaker voice coil 28 is not wound with coil is connected with ball top 24, play ripple 26 and be looped around the position that skeleton voice coil loudspeaker voice coil 28 is not wound with coil.Magnetic circuit system comprises magnet 32a and magnetic conductive part, magnetic conductive part comprises T iron 34 and washer 30a, T iron 34 comprises circular base, the center of base is provided with columniform boss, the base of T iron 34 is fixed with successively magnet 32a and the washer 30a of annular, washer 30a and shell 10 are fixed, and leave magnetic gap between the boss of magnet 32a and washer 30a and T iron 34, one end that skeleton voice coil loudspeaker voice coil 28 is wound with coil is positioned at magnetic gap.Skeleton voice coil loudspeaker voice coil 28 moves up and down in magnetic gap according to the size and Orientation of the sound wave signal of telecommunication by its coil, these three parts of ball top 24, connector 22 and ring 20 vibrate along with moving up and down of skeleton voice coil loudspeaker voice coil 28 simultaneously, instigate air sounding, thus complete the power conversion between electroacoustic.
As Fig. 1 and Fig. 4 jointly shown in, T iron 34 is provided with and cracks 340, crack and 340 be provided with eight altogether, set eight crack 340 the degree of depth extend all in the horizontal direction, length all vertically extends, article eight, crack 340 equally spaced branches on T iron 34, and eight 340 extended lines in the depth direction that crack are all crossing with the axis of rotation of T iron 34, and are symmetrical arranged relative to the axis of rotation of T iron 34 between two.Article eight, crack and 340 to extend to center by the outward flange of T iron 34 in the depth direction, and extend on the boss of T iron 34, eight crack and 340 all run through whole T iron 34 in the longitudinal direction.
As shown in Figure 4, adjacent two crack 340 is that a depth dimensions is large, and another depth dimensions is little, and what namely eight 340 depths of cracking replaced is arranged on T iron 34.Article eight, crack 340 the depth be disposed alternately at effectively reduce magnetic conductive part eddy current loss while can also reduce the impact of cracking on original Distribution of Magnetic Field to greatest extent, improve the acoustical behavior of loud speaker to greatest extent.
As Fig. 1 and Fig. 5 jointly shown in, washer 30a is also provided with the 300a that cracks, and the 300a that cracks is provided with eight equally.Article eight, crack the equally spaced branch of 300a on washer 30a, and eight 300a extended lines in the depth direction that crack are all crossing with the axis of rotation of washer 30a, and are symmetrical arranged relative to the axis of rotation of washer 30a between two.The 300a that cracks extends to outward flange by the inward flange of washer 30a in the depth direction, all runs through whole washer 30a in the longitudinal direction.Article eight, the 300a that cracks also is that the depth is arranged alternately on washer 30a.
Crack and can parts only in washer 30a, magnet 32a and T iron 34 be arranged, also all can arrange at three parts, on washer 30a and T iron 34, be only provided with that to crack be preferred version of the present utility model, because it is bad only to arrange the effect that reduces eddy current loss of cracking on one component; Crack can increase cost because arranging on magnet 32a again, therefore the utility model only arranges and cracks on washer 30a and T iron 34.Crack if arrange on magnet 32a, its structure of cracking is consistent with the structure of the 300a that cracks on washer 30a.
As shown in Figure 1, Figure 2 with Fig. 3 jointly shown in, shell 10 is also fixed with for electrical connector skeleton voice coil loudspeaker voice coil 28 electrical connector 40 with loud speaker external circuit.
Embodiment two:
Present embodiment is substantially identical with embodiment one, and its difference is:
As Fig. 6, Fig. 7 and Fig. 8 jointly shown in, the magnetic conductive part of magnetic circuit system comprises frame 36 and washer 30b, frame 36 comprises circular bottom and the vertical surrounding annular sidewall at bottom margin, center bottom frame 36 is provided with a round boss, round boss is fixed with successively the diameter circular magnet 32b identical with boss and washer 30b, side wall ends and the shell 10 of frame 36 are fixed.
As shown in Figure 6, frame 36 is provided with cracks 360, cracks 360 to be provided with eight altogether, and eight crack and 360 all run through the sidewall of frame 36 in the depth direction and extend on boss; Openend in the longitudinal direction by frame 36 extends to blind end, but only extends to the intersection of boss and bottom, does not extend to bottom, that is cracks and 360 in length, does not run through whole frame.Article eight, crack 360 on boss the depth be arranged alternately.Article eight, 360 extended lines in the depth direction that crack are all crossing with the axis of rotation of frame.
As shown in Figure 6, washer 30b is provided with the 300b that cracks, and the 300b that cracks also is provided with eight, and eight 300b that crack extend to center by the outward flange of washer 30b in the depth direction, and the depth is arranged alternately.
As Fig. 6 and Fig. 8 jointly shown in, the end face of frame 36 sidewall is provided with an annular groove 362 coaxial with frame 36, the end face of the sidewall inside groove 362 is higher than the end face of the sidewall in outside, the end face that the bottom of shell 10 is overlapped on the highly lower sidewall of groove 362 leans with highly higher sidewall, and inner surface bottom shell 10 and highly higher sidewall end face.The part that highly higher sidewall exceeds highly lower sidewall is not provided with cracks 360.
The utility model cracks by arranging on magnetic conductive part, has cut off the loop of eddy current, has prevented the formation of most eddy current, effectively reduce the eddy current loss on magnetic conductive part, improve the efficiency of loud speaker at high frequency, reduce second harmonic distortion, improve the acoustical behavior of loud speaker.Owing to arranging the technical problem effectively solving and magnetic conductive part produces eddy current of cracking on magnetic conductive part, therefore without the need to setting up short-circuited conducting sleeve in loud speaker, decrease the internal part of loud speaker, reduce production cost, simplify the assembly technology of loud speaker simultaneously, effectively raise production efficiency and the product qualified rate of loud speaker.
Cracking in above-mentioned two embodiments on each magnetic conductive part is equipped with eight, this is the preferred implementation after many-sided consideration such as the effect of inventor according to reduction eddy current loss and the impact on the original magnetic field of loud speaker, eight are not defined as in practical application, technical staff can determine the quantity of cracking according to the performance requirement of the volume of magnetic conductive part and loud speaker, as for being provided with, the embodiment that other quantity cracks is all substantially identical with above-mentioned two embodiments, therefore does not repeat them here about being provided with the embodiment that other quantity cracks.
The utility model is only provided with the technical scheme of cracking for the loud speaker described by above-mentioned two embodiments to the utility model magnetic conductive part and has carried out detailed elaboration; and this technical scheme is not limited in the loud speaker of above-mentioned two kinds of structures in practical application; crack as long as magnetic conductive part is provided with; the eddy current loss be used on reduction magnetic conductive part and this cracks; reduce second harmonic distortion, all drop in protection range of the present utility model in order to the product promoting loud speaker acoustical behavior.
The utility model is not limited to above-mentioned concrete execution mode, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion made, all drop within protection range of the present utility model.
Claims (9)
1. loud speaker, comprise shell, vibrational system and magnetic circuit system is contained in described shell, described magnetic circuit system comprises the magnet and magnetic conductive part that combine, it is characterized in that, at least one parts in described magnet and described magnetic conductive part are provided with some and crack, and the degree of depth of cracking described in each bar extends all in the horizontal direction, and the length of cracking described in each bar all vertically extends.
2. loud speaker according to claim 1, is characterized in that, equally spaced being distributed on each described parts of cracking described in each bar.
3. loud speaker according to claim 2, is characterized in that, each described parts are circle or circular ring structure, and the extended line cracked described in each bar is in the depth direction all crossing with the axis of rotation of corresponding described parts.
4. loud speaker according to claim 3, is characterized in that, the depth of cracking described on same described parts is arranged alternately.
5. loud speaker according to claim 4, is characterized in that, being located at cracks described on described magnetic conductive part and described magnet all runs through described magnetic conductive part and described magnet in the longitudinal direction.
6. the loud speaker according to the arbitrary claim of claim 1 to 5, it is characterized in that, described magnetic conductive part comprises T iron and washer, cracks described in described T iron is provided with, crack described in each bar and extend to center by the outward flange of described T iron in the depth direction, and extend on the boss of described T iron; Crack described in each bar and all run through described T iron in the longitudinal direction.
7. loud speaker according to claim 6, is characterized in that, described washer is circular ring structure, cracks described in described washer is provided with, and cracks and extend to outward flange by the inward flange of described washer in the depth direction described in each bar.
8. the loud speaker according to the arbitrary claim of claim 1 to 5, it is characterized in that, described magnetic conductive part comprises frame and washer, crack described in described frame is provided with, crack described in each bar and all run through the annular sidewall of described frame in the depth direction, crack described in each bar and extend to blind end by the openend of described frame in the longitudinal direction.
9. loud speaker according to claim 8, is characterized in that, described washer is circular configuration, cracks described in described washer is provided with, and cracks and extend to center by the outward flange of described washer in the depth direction described in each bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420623313.8U CN204131723U (en) | 2014-10-24 | 2014-10-24 | Loud speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420623313.8U CN204131723U (en) | 2014-10-24 | 2014-10-24 | Loud speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204131723U true CN204131723U (en) | 2015-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420623313.8U Active CN204131723U (en) | 2014-10-24 | 2014-10-24 | Loud speaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204131723U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104320745A (en) * | 2014-10-24 | 2015-01-28 | 歌尔声学股份有限公司 | Speaker |
-
2014
- 2014-10-24 CN CN201420623313.8U patent/CN204131723U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104320745A (en) * | 2014-10-24 | 2015-01-28 | 歌尔声学股份有限公司 | Speaker |
| WO2016062007A1 (en) * | 2014-10-24 | 2016-04-28 | 歌尔声学股份有限公司 | Loudspeaker |
| CN104320745B (en) * | 2014-10-24 | 2018-06-05 | 歌尔股份有限公司 | Loud speaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |