CN115914952B - Loudspeaker - Google Patents
Loudspeaker Download PDFInfo
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- CN115914952B CN115914952B CN202211523699.0A CN202211523699A CN115914952B CN 115914952 B CN115914952 B CN 115914952B CN 202211523699 A CN202211523699 A CN 202211523699A CN 115914952 B CN115914952 B CN 115914952B
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Abstract
The invention provides a loudspeaker, which comprises a lower frame and an upper frame, wherein a vibrating diaphragm is arranged between the upper frame and the lower frame, a ball top is adhered to the vibrating diaphragm, one side of the ball top, which is close to the lower frame, is fixedly connected with a lower voice coil, one side of the ball top, which is close to the upper frame, is fixedly connected with an upper voice coil, the centers of the upper voice coil and the lower voice coil are positioned on the same vertical line, and the size of the upper voice coil is not larger than that of the lower voice coil. Compared with the situation that the two voice coils are arranged on the same side, the size in the horizontal direction can be greatly reduced, and the whole occupied area of the loudspeaker is effectively reduced; the size of the upper voice coil is not larger than that of the lower voice coil, so that the vibration weight is as small as possible, the overall performance is improved, the upper voice coil is positioned in the front cavity above the vibrating diaphragm, the size of the upper voice coil is reduced, the volume of the front cavity can be properly improved, the magnetic field of the lower magnetic circuit system can be effectively utilized, and more magnetic lines of force penetrate through the upper voice coil.
Description
Technical Field
The invention relates to an electronic product, in particular to a loudspeaker.
Background
The micro-speaker structure comprises a supporting system, an electric connection system, a vibration system and a magnetic circuit system, and the development of the speaker is restricted due to insufficient driving force. The existing double-voice-coil loudspeaker structure is provided with two types, one type is that two voice coils are piled up end to end on one side of a vibrating diaphragm, the driving force of the original loudspeaker can not be increased, and only the structure is optimized, and a circuit board is placed; the other is that two voice coils are concentric to be sleeved on one side of the vibrating diaphragm, the magnetic steel is arranged at the center of the voice coils and between the voice coils, the voice coils are adhered on one side of the vibrating diaphragm in the arrangement mode, difficulty is brought to assembly, the size of the loudspeaker can be increased, the number of magnetic induction lines penetrating through the voice coils can be increased under the influence of the magnetic steel on two sides in the aspect of integral driving force contribution, and the voice coils on the outer voice coils can not be increased, so that the driving force is limited.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a loudspeaker.
The aim of the invention is achieved by the following technical measures: a loudspeaker, characterized by: including lower basin frame and last basin frame, go up the basin frame and be provided with the vibrating diaphragm down between the basin frame, it has the ball top to bond on the vibrating diaphragm, one side fixedly connected with down the voice coil of basin frame is close to down to the ball top, one side fixedly connected with that the ball top is close to the basin frame goes up the voice coil loudspeaker voice coil, go up the voice coil loudspeaker voice coil and the center of voice coil loudspeaker voice coil down is located same vertical line, go up the size of voice coil loudspeaker voice coil and be not greater than the size of voice coil loudspeaker voice coil down.
As a preferred scheme, the upper voice coil is provided with a corresponding upper magnetic circuit system, the lower voice coil is provided with a corresponding lower magnetic circuit system, the upper magnetic circuit system comprises upper magnetic steel, the lower magnetic circuit system comprises lower magnetic steel, and polarities of one ends of the upper magnetic steel and the lower magnetic steel, which are close to each other, are the same.
As a preferable scheme, the centers of the upper magnetic steel and the lower magnetic steel are positioned on the same vertical line, and the size of the lower magnetic steel is larger than that of the upper magnetic steel.
As a preferable scheme, the upper magnetic circuit system further comprises an upper magnetic cover and an upper pole piece, wherein the upper magnetic cover is arranged on the inner side of the upper basin frame, the upper magnetic steel is arranged on one side, close to the top of the ball, of the upper magnetic cover, and the upper pole piece is arranged on one side, close to the top of the ball, of the upper magnetic steel.
As a preferable scheme, the upper magnetic cover and the upper basin frame are concentrically arranged, and the upper magnetic cover is positioned at the center of the upper basin frame.
As a preferable scheme, the upper magnetic cover is connected with the upper basin frame through a cantilever, a plurality of cantilevers are arranged along the circumference of the upper magnetic cover, one end of each cantilever is connected with the upper magnetic cover, and the other end of each cantilever is connected with the upper basin frame.
As a preferable scheme, a groove is formed between the upper basin frame, the upper magnetic cover and the adjacent cantilever, one end of the groove in the vibration direction is communicated with the vibrating diaphragm, and the other end of the groove is communicated with the outside.
As a preferable scheme, the lower magnetic circuit system further comprises a lower magnetic cover and a lower pole piece, wherein the lower magnetic cover is arranged on the inner side of the lower basin frame, the lower magnetic steel is arranged on one side, close to the top of the ball, of the lower magnetic steel, and the lower pole piece is arranged on one side, close to the top of the ball, of the lower magnetic steel.
As a preferable scheme, the upper magnetic circuit system is provided with a through hole, the through hole is arranged along the vibration direction, one end of the through hole is communicated with the dome, and the other end of the through hole is communicated with the outside.
As a preferable scheme, the cross section area of the upper magnetic steel is S, and the cross section area of the through hole is S1, and S1 is more than 0 and less than or equal to 0.6S.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the advantages that: by arranging the upper voice coil on the upper side of the dome and arranging the lower voice coil on the lower side of the dome, the overall size can be optimized under the condition of increasing the driving force, and compared with the condition that two voice coils are arranged on the same side, the size in the horizontal direction can be greatly reduced, and the overall occupied area of the loudspeaker is effectively reduced; the size of the upper voice coil is not larger than that of the lower voice coil, so that the vibration weight is as small as possible, the overall performance is improved, the upper voice coil is positioned in the front cavity above the vibrating diaphragm, the size of the upper voice coil is reduced, the volume of the front cavity can be properly improved, the magnetic field of the lower magnetic circuit system can be effectively utilized, and more magnetic lines of force penetrate through the upper voice coil; through setting up magnet steel and lower magnet steel, the one end polarity that is close to each other with upper magnet steel and lower magnet steel is the same, can make the magnetic force line that passes the voice coil down in the magnetic circuit down and pass the magnetic force line density increase, the quantity increase of going up the voice coil in the magnetic circuit down under the mutual influence of two magnet steel to go up the voice coil, go up the voice coil and the drive direction of voice coil down is unanimous, thereby realize 1+1 > 2's effect, bring product sensitivity FR to promote at least 10% when improving the drive force.
The invention is further described below with reference to the drawings and the detailed description.
Drawings
Fig. 1 is an exploded view of embodiment 1 of a speaker according to the present invention.
Fig. 2 is a schematic sectional structure of embodiment 1 of a speaker of the present invention.
Fig. 3 is a schematic top view of embodiment 1 of a speaker of the present invention.
Fig. 4 is a schematic perspective view of embodiment 1 of a speaker according to the present invention.
Fig. 5 is a schematic diagram of magnetic force line distribution patterns of an upper voice coil and a lower voice coil of a speaker according to the present invention.
Fig. 6 is a schematic diagram of a single-magnet magnetic field principle of a speaker according to the present invention.
Fig. 7 is a schematic diagram of two magnetic steel magnetic field structures of a speaker according to the present invention.
Fig. 8 is a schematic sectional structure of embodiment 2 of a speaker of the present invention.
Fig. 9 is a schematic top view of embodiment 2 of a speaker of the present invention.
Fig. 10 is a schematic perspective view of embodiment 2 of a speaker of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Example 1: as shown in fig. 1-7, a speaker includes a lower frame 1 and an upper frame 2, where the lower frame 1 and the upper frame 2 are oppositely disposed, and the upper frame 2 is disposed above the lower frame 1, in this embodiment, the outer circumferences of the upper frame 2 and the lower frame 1 are identical, so that the outer circumferences of the joints of the upper frame 2 and the lower frame 1 are flush, and the upper frame 2 and the lower frame 1 may be fixed by bonding, or may be fixed by welding or by other means.
Be provided with vibrating diaphragm 3 between last basin frame 2 and the lower basin frame 1, the bonding has ball top 4 on the vibrating diaphragm 3, and one side that ball top 4 is close to lower basin frame 1 fixedly connected with voice coil 6 down, and one side that ball top 4 is close to last basin frame 2 is fixedly connected with voice coil 5. In this embodiment, as shown in fig. 2, the centers of the upper voice coil 5 and the lower voice coil 6 are located on the same vertical line, so as to ensure the stress balance of the dome 4. The distance between the upper voice coil 5 and the lower voice coil 6 is L, wherein L is more than or equal to 0, namely the size of the upper voice coil 5 is not larger than that of the lower voice coil 6, in the embodiment, the size of the upper voice coil 5 is smaller than that of the lower voice coil 6, and the weight of the upper voice coil 5 can be reduced by setting, so that the influence of the weight of the upper voice coil 5 on the dome 4 is small, and the vibration weight is simultaneously reduced as much as possible under the condition of ensuring that BL is increased, thereby improving the overall performance; and the upper voice coil 5 is positioned in the front cavity above the vibrating diaphragm 3, and is limited by the space of the front cavity, the size of the upper voice coil 5 can be reduced to properly lift the volume of the front cavity, so that the size of the upper voice coil 5 is not larger than that of the lower voice coil 6.
In this embodiment, the upper voice coil and the lower voice coil are both common three-dimensional voice coils, and the whole speaker is used for being mounted on the loudspeaker.
The upper voice coil 5 and the lower voice coil 6 are respectively arranged on the upper side and the lower side of the vibrating diaphragm 3, compared with the situation that the two voice coils are arranged on the same side, the size of the horizontal direction can be greatly reduced, and the whole occupied area of the loudspeaker is effectively reduced.
As shown in fig. 2, the lower voice coil 6 is provided with a corresponding lower magnetic circuit system, and the lower magnetic circuit system comprises a lower magnetic shield 7, a lower magnetic steel 8 and a lower pole piece 9, wherein the lower magnetic shield 7 is fixedly connected to the inner side of the lower basin frame 1, and the lower magnetic steel 8 and the lower pole piece 9 are fixedly connected to the lower magnetic shield 7.
The upper voice coil 5 is provided with a corresponding upper magnetic circuit system, and the upper magnetic circuit system comprises an upper magnetic shield 10, upper magnetic steel 11 and an upper pole piece 12. The inner side of the upper basin frame 2 is connected with an upper magnetic cover 10, the upper basin frame 2 and the upper magnetic cover 10 are integrally formed by injection molding, in the embodiment, as shown in fig. 3-4, the upper magnetic cover 10 and the upper basin frame 2 are concentrically arranged, the upper magnetic cover 10 is positioned at the center of the upper basin frame 2, and the upper magnetic cover 10 only surrounds the upper magnetic steel 11, so that occupied space is maximally reduced. The upper magnetic cover 10 is connected with the upper basin frame 2 through cantilevers 13, the cantilevers 13 are uniformly distributed along the circumferential direction of the upper magnetic cover 10, one end of each cantilever 13 is connected with the upper basin frame 2, and the other end of each cantilever 13 is connected with the upper magnetic cover 10. In this embodiment, the projection of the upper frame 2 in the vibration direction is rectangular, the projection of the upper magnetic shield 10 in the vibration direction is also rectangular, and four cantilevers 13 are provided to connect the four corners of the upper frame 2 and the upper magnetic shield 10, respectively. As shown in fig. 3-4, grooves 14 are formed between the four sides of the upper basin frame 2 and the upper magnetic cover 10 and the adjacent cantilevers 13, in this embodiment, the four grooves 14 are respectively corresponding to the four sides of the upper basin frame 2 and the upper magnetic cover 10, one end of the groove 14 in the vibration direction is communicated with the vibrating diaphragm 3, the other end is communicated with the outside, and thus sound effect output is effectively improved.
As shown in fig. 2, the upper magnetic steel 11 and the lower magnetic steel 8 are opposite in polarity, in this embodiment, the N pole of the upper magnetic steel 11 is lower, the S pole is upper, the N pole of the lower magnetic steel 8 is lower, and as shown in fig. 6-7, the magnetic force lines are closed curves, the magnetic induction lines around the magnet all come out from the N pole to enter the S pole, and the magnetic induction lines are from the S pole to the N pole in the magnet. It can be seen that the two magnets interact such that the magnetic flux density between the two magnets is much greater than that generated by one magnet. As shown in FIG. 6, when one magnetic steel is used, a part of the magnetic induction lines of the N pole and the S pole are outwards dispersed, and the part of the magnetic induction lines cannot penetrate through the coil, and as shown in FIG. 7, after the magnetic poles of the two magnetic steels are oppositely arranged, the magnetic induction lines emitted from the N pole are all towards one side and are closed towards the S pole under the influence of the N pole of the other magnetic steel, so that the magnetic steels arranged by the two opposite magnetic poles can enable the magnetic induction lines penetrating through the coil to be more dense, the number of the magnetic induction lines penetrating through the coil is increased, and the driving force of the two coils can be effectively enhanced. As shown in fig. 2, the centers of the upper magnetic steel 11 and the lower magnetic steel 8 are located on the same vertical line, the size of the lower magnetic steel 8 is larger than that of the upper magnetic steel 11, the size of the upper magnetic steel 11 is matched with that of the upper voice coil 5, and the size of the front cavity is increased, so that the size is smaller than that of the lower magnetic steel 8.
The upper voice coil structure and the lower voice coil structure can increase the concentration and the quantity of magnetic force lines penetrating through the upper voice coil and the lower voice coil, so that the BL value is increased, and the performance is improved. As can be seen from fig. 5, the magnetic lines passing through the two voice coils are all in an inclined state, the inclined angles are various, under the action of the upper and lower two magnetic steels, the magnetic lines passing through the upper voice coil 5 are generated by the upper magnetic steel and the lower magnetic steel, the magnetic lines passing through the lower voice coil 6 are generated by the lower magnetic steel and the upper magnetic steel, and the upper voice coil 5 is smaller than the lower voice coil 6 in size, and the magnetic field of the lower magnetic circuit system can be effectively utilized, so that more magnetic lines passing through the upper voice coil 5 are generated, and the magnetic induction intensity is effectively increased.
Under the same condition of the whole thickness of the loudspeaker, the design of the loudspeaker can enable the upper magnetic circuit system and the lower magnetic circuit system to mutually influence, so that the concentration of magnetic lines passing through the lower voice coil 6 in the lower magnetic circuit system and the concentration of magnetic lines passing through the upper voice coil 5 in the upper magnetic circuit system are increased, the quantity is also increased, the driving directions of the upper voice coil 5 and the lower voice coil 6 are consistent, and the sensitivity FR of a product is improved by at least 10% when the driving force is improved.
During assembly, the upper magnetic circuit system is assembled on the upper side of the top 4, the lower magnetic circuit system is assembled on the lower side of the top 4, then the upper voice coil 5 and the lower voice coil 6 are electrified, the upper voice coil 5 and the lower voice coil 6 are driven by the upper magnetic circuit system to reciprocate along the axial direction, and then the vibrating diaphragm 3 is driven to reciprocate along the axial direction, so that the overall driving force is improved, and the overall sensitivity is improved.
Example 2: in this embodiment, as shown in fig. 8-10, an upper magnetic steel 11 and an upper pole piece 12 are fixedly connected to one side of the upper magnetic cover 10, which is close to the dome 4, a through hole 15 is provided on the upper magnetic circuit system, the through hole 15 is arranged along the vibration direction, one end of the through hole 15 is communicated with the dome 4, and the other end is communicated with the outside. The cross-sectional area of the upper magnetic steel 11 is S, the cross-sectional area of the through hole 15 is S1, S1 is more than 0 and less than or equal to 0.6S, in this embodiment, s1=0.5S, that is, the cross-sectional area of the through hole 15 is half of the cross-sectional area of the upper magnetic steel 11, so as to ensure the structural stability of the upper magnetic steel 11. The through holes 15 can improve the sounding area of the front cavity, thereby improving the sounding effect, reducing the overall weight of the product and having little influence on performance.
Other portions in this embodiment are the same as those in embodiment 1, and are not described in detail.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (5)
1. A loudspeaker, characterized by: including basin frame and last basin frame down, go up the basin frame and go up the basin frame between, it has the ball top to bond on the vibrating diaphragm, one side fixedly connected with of basin frame down is close to the ball top, the ball top is close to one side fixedly connected with of basin frame and goes up the voice coil, go up the voice coil and lie in same vertical line with the center of voice coil down, go up the size of voice coil is not greater than the size of voice coil down, go up the voice coil and be provided with the last magnetic circuit that corresponds, the voice coil is provided with the lower magnetic circuit that corresponds down, go up magnetic circuit and include the magnet steel down, go up the magnet steel and the one end polarity that is close to each other of magnet steel down is the same, go up magnetic circuit still includes magnet cover and last pole piece, go up the magnet cover setting and be close to one side of ball top at the magnet cover, go up the magnet cover and be connected through the cantilever between basin frame down between magnet cover and the top, the cantilever is provided with a plurality of magnet covers along last magnet cover, the magnet cover is connected with the magnet cover down the top and the adjacent one side of basin frame, the magnet cover is close to the magnet cover down near the magnet cover, the magnet cover is connected with the other end of the adjacent to the magnet cover under the basin frame, the vibration is near the magnet cover under the recess, the magnet cover is near the magnet cover.
2. A loudspeaker according to claim 1, wherein: the centers of the upper magnetic steel and the lower magnetic steel are positioned on the same vertical line, and the size of the lower magnetic steel is larger than that of the upper magnetic steel.
3. A loudspeaker according to claim 1, wherein: the upper magnetic cover and the upper basin frame are concentrically arranged, and the upper magnetic cover is positioned at the center of the upper basin frame.
4. A loudspeaker according to any one of claims 1 to 3, wherein: the upper magnetic circuit system is provided with a through hole, the through hole is arranged along the vibration direction, one end of the through hole is communicated with the dome, and the other end of the through hole is communicated with the outside.
5. A loudspeaker according to claim 4, wherein: the cross section area of the upper magnetic steel is S, and the cross section area of the through hole is S1, S1 is more than 0 and less than or equal to 0.6S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211523699.0A CN115914952B (en) | 2022-12-01 | 2022-12-01 | Loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211523699.0A CN115914952B (en) | 2022-12-01 | 2022-12-01 | Loudspeaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115914952A CN115914952A (en) | 2023-04-04 |
| CN115914952B true CN115914952B (en) | 2023-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211523699.0A Active CN115914952B (en) | 2022-12-01 | 2022-12-01 | Loudspeaker |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203416411U (en) * | 2013-09-02 | 2014-01-29 | 美特科技(苏州)有限公司 | Loudspeaker |
| CN204392551U (en) * | 2014-12-29 | 2015-06-10 | 汉得利（常州）电子股份有限公司 | A kind of Dual Drive Microspeaker |
| CN209767816U (en) * | 2019-06-06 | 2019-12-10 | 共达电声股份有限公司 | Loudspeaker |
| US10631096B1 (en) * | 2019-03-07 | 2020-04-21 | Apple Inc. | Force cancelling transducer |
| CN211531284U (en) * | 2020-03-05 | 2020-09-18 | 瑞声科技(新加坡)有限公司 | Sound production device |
| CN216362355U (en) * | 2021-11-10 | 2022-04-22 | 瑞声光电科技(常州)有限公司 | Speaker and electronic equipment |
| CN216600062U (en) * | 2022-04-02 | 2022-05-24 | 共达电声股份有限公司 | Loudspeaker |
-
2022
- 2022-12-01 CN CN202211523699.0A patent/CN115914952B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203416411U (en) * | 2013-09-02 | 2014-01-29 | 美特科技(苏州)有限公司 | Loudspeaker |
| CN204392551U (en) * | 2014-12-29 | 2015-06-10 | 汉得利（常州）电子股份有限公司 | A kind of Dual Drive Microspeaker |
| US10631096B1 (en) * | 2019-03-07 | 2020-04-21 | Apple Inc. | Force cancelling transducer |
| CN209767816U (en) * | 2019-06-06 | 2019-12-10 | 共达电声股份有限公司 | Loudspeaker |
| CN211531284U (en) * | 2020-03-05 | 2020-09-18 | 瑞声科技(新加坡)有限公司 | Sound production device |
| CN216362355U (en) * | 2021-11-10 | 2022-04-22 | 瑞声光电科技(常州)有限公司 | Speaker and electronic equipment |
| CN216600062U (en) * | 2022-04-02 | 2022-05-24 | 共达电声股份有限公司 | Loudspeaker |
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| CN115914952A (en) | 2023-04-04 |
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