CN212392994U - Voice coil and sound generating device - Google Patents
Voice coil and sound generating device Download PDFInfo
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- CN212392994U CN212392994U CN202022361076.0U CN202022361076U CN212392994U CN 212392994 U CN212392994 U CN 212392994U CN 202022361076 U CN202022361076 U CN 202022361076U CN 212392994 U CN212392994 U CN 212392994U
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Abstract
The utility model discloses a voice coil loudspeaker voice coil and sound generating mechanism, wherein, the voice coil loudspeaker voice coil is in including the skeleton that constitutes the tube-shape and by voice coil loudspeaker voice coil line coiling the skeleton outside and the coil that forms, wherein, the coil includes at least first coil section and the second coil section that the interval set up in the axial of skeleton, first coil section with be provided with the wire jumper between the second coil section in order to incite somebody to action first coil section with the second coil section is established ties and is switched on. The utility model discloses technical scheme has promoted the BL linear region of voice coil loudspeaker voice coil, has avoided the distortion phenomenon in the sound generating mechanism sound production process.
Description
Technical Field
The utility model relates to an acoustics technical field, in particular to voice coil loudspeaker voice coil and sound generating mechanism who uses this voice coil loudspeaker voice coil.
Background
In the related art, in order to make a sound generating device such as a speaker have a large amplitude in a low frequency region, a coil with a long continuous length is wound in an axial direction of a bobbin of a voice coil, and such a design results in a large overall mass of the voice coil, and reduces the sensitivity of the voice coil. In order to improve the sensitivity of the voice coil, the length of the coil on the framework in the axial direction is also shortened in the related art, so that the coil is separated from a magnetic induction line dense area in a magnetic gap in the vibration process of the voice coil, and the distortion of the sound production device in the sound production process is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a voice coil loudspeaker voice coil aims at promoting the BL linear region of voice coil loudspeaker voice coil, reduces the distortion phenomenon among the sound generating mechanism sound production process.
In order to achieve the above object, the utility model provides a voice coil loudspeaker voice coil, include:
a cylindrical skeleton is formed; and
the coil is formed by winding a voice coil wire outside the framework, wherein the coil at least comprises a first coil section and a second coil section which are arranged at intervals in the axial direction of the framework, and a jumper wire is arranged between the first coil section and the second coil section so as to serially connect and conduct the first coil section and the second coil section.
The utility model discloses technical scheme sets up first coil section and second coil section through the interval in the voice coil loudspeaker voice coil, and through the wire jumper intercommunication between first coil section and the second coil section, because there is the interval between first coil section and the second coil section, the circle width of a circle of coil has been increased, thereby the whole weight of voice coil loudspeaker voice coil can obtain reducing, and through wire jumper intercommunication first coil section and second coil section, so the number of layers of voice coil line of first voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil can comparatively easy adjustment, in voice coil loudspeaker voice coil vibration process, the structure that first coil section and coil section constitute always has partial structure to be in the intensive district of magnetic force line, so can effectively promote BL linear region, avoid the phenomenons of distortion.
Optionally, the voice coil wire of the first and second coil segments is one continuous voice coil wire.
Optionally, the jumper is a part of the voice coil wire in the first coil section, or the jumper is a part of the voice coil wire in the second coil section.
Optionally, the coil has an input line and an output line, the input line being provided in the first coil section and the output line being provided in the second coil section, or both the input line and the output line being provided in the first coil section.
Optionally, the first coil section and the second coil section have the same number of voice coil wire layers or have different numbers of voice coil wire layers.
Optionally, the number of jumper wires between the first coil segment and the second coil segment is one or at least two.
Optionally, the wire diameter of the voice coil wire in the first coil section and the wire diameter of the voice coil wire in the second coil section are the same or different.
The utility model discloses still provide a sound generating mechanism include the casing and accept in magnetic circuit in the casing, sound generating mechanism still includes the voice coil loudspeaker voice coil as above-mentioned arbitrary embodiment, magnetic circuit is formed with the magnetic gap, the one end of voice coil loudspeaker voice coil stretches into in the magnetic gap.
Optionally, the magnetic circuit system includes a magnetic yoke, a central magnetic circuit portion and a side magnetic circuit portion, the central magnetic circuit portion and the side magnetic circuit portion are disposed on the magnetic yoke, the magnetic gap is formed between the central magnetic circuit portion and the side magnetic circuit portion, a central magnetic conductive plate is disposed on an upper surface of the central magnetic circuit portion, and a width of a gap between the first coil section and the second coil section is smaller than a thickness of the central magnetic conductive plate.
Optionally, the total length of the voice coil wire in the first coil section is the same as the total length of the voice coil wire in the second coil section, and the center of the gap between the first coil section and the second coil section is located on the horizontal center line of the central magnetic conductive plate.
Optionally, the first coil segment is located above the second coil segment;
the total length of the voice coil wire in the first coil section is greater than that of the voice coil wire in the second coil section, and the center of a gap between the first coil section and the second coil section is positioned below the horizontal center line of the central magnetic conduction plate;
or the total length of the voice coil wire in the first coil section is smaller than that of the voice coil wire in the second coil section, and the center of the gap between the first coil section and the second coil section is located above the horizontal center line of the central magnetic conduction plate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is an exploded schematic view of the sound generating device of the present invention;
FIG. 2 is a cross-sectional view of yet another embodiment of a voice coil in the sound generating device of FIG. 1;
fig. 3 is a sectional view of a voice coil according to a first embodiment of the present invention;
fig. 4 is a sectional view of a voice coil according to a second embodiment of the present invention;
fig. 5 is a sectional view of a voice coil according to a third embodiment of the present invention;
fig. 6 is a sectional view of a voice coil according to a fourth embodiment of the present invention;
fig. 7 is a cross-sectional view of a fifth embodiment of the voice coil of the present invention;
FIG. 8 is a cross-sectional view of a first embodiment of the sound generator of FIG. 1;
FIG. 9 is a cross-sectional view of a second embodiment of the sound generator of FIG. 1;
fig. 10 is a cross-sectional view of a third embodiment of the sound generator of fig. 1.
The reference numbers illustrate:
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a sound production device.
Referring to fig. 1 and fig. 8 to fig. 10, in the embodiment of the present invention, the sound generating device 1 includes a housing, and a vibration system 10 and a magnetic circuit system 20 contained in the housing.
In some embodiments, the yoke may be T-shaped or bowl-shaped, when the yoke is bowl-shaped, the inner magnetic path portion 220 includes a central magnet 221 disposed at a central position of the yoke and a central magnetic conductive plate 222 disposed on the central magnet 221, the magnetic gap is formed between the wall of the bowl of the yoke and the central magnet 221 and the central magnetic conductive plate 222, when the yoke is T-shaped, the outer magnetic path portion 230 includes an edge magnet disposed at an edge position of the yoke and an edge magnetic conductive plate disposed on the edge magnet, and the magnetic gap is formed between the edge magnet and the edge magnetic conductive plate and the T-shaped column.
The utility model discloses a promote the acoustic performance of sound generating mechanism 1, further, still improve voice coil loudspeaker voice coil 120 to a voice coil loudspeaker voice coil 120 is proposed.
In the embodiment of the present invention, the voice coil 120 includes the bobbin 130 forming a cylindrical shape, the coil 140 is formed by winding a voice coil wire, the coil 140 includes at least a first coil section 140a and a second coil section 140b arranged at intervals, and a jumper wire 142 is arranged between the first coil section 140a and the second coil section 140b to connect the first coil section 140a and the second coil section 140b in series. The coil 140 may be three or four segments arranged at intervals in addition to the two segments shown in the figure, and when the coil 140 is three or more than three segments, the adjacent coil segments may be conducted through the jumper 142. The material of the frame 130 may be paper such as kraft paper, a fiber material such as aramid fiber, a metal such as aluminum, or a plastic material such as polyimide. The coil 140 is supported by the bobbin 130, which can further improve the structural strength of the entire voice coil 120. And the first coil section 140a, the second coil section 140b and the framework 130 are coaxially arranged, so that the consistency in the vibration process is realized, and noise is avoided.
The utility model discloses arrange a coil section replacement in magnetic gap in prior art for two coil sections, and switch on through wire jumper 142 between two coil sections and have a determining deviation, under the unchangeable condition of the total length of voice coil line (indicate length of a coil section of prior art with the utility model discloses the length sum of two voice coil sections is the same), magnetic line of force among the utilization magnetic circuit that can be more abundant to increase the drive power of magnetic circuit to the voice coil loudspeaker voice coil. Under the condition that the total lengths of the voice coil wires are the same and the number of layers is the same, the height range of the coil 140 in the longitudinal direction can be increased due to the gap between the two coil sections, and the problem of insufficient utilization of magnetic lines of force caused by the fact that the voice coil is easy to deviate from a magnetic line dense area in the vertical vibration process in the prior art is solved. The region with dense magnetic lines refers to the region around the central magnetic conductive plate 222, and specifically refers to the region around the central magnetic conductive plate 222 corresponding to the region between the upper surface and the lower surface of the central magnetic conductive plate 222, where the magnetic lines are the most dense and the magnetic field strength is the most intense. In the structure of splitting one coil section into two coil sections, at least a part of the two coil sections can be placed in the magnetic line concentration region during the vibration process of the voice coil 120, and the utilization rate of the magnetic lines is significantly higher than that of the traditional structure of one coil section. In this embodiment, two coil segments correspond to one region of high magnetic flux concentration.
The structure of the voice coil 120 of the present invention will be described next from a plurality of dimensions.
Regarding the arrangement of the first coil segment 140a and the second coil segment 140b on the bobbin 130.
Referring to fig. 1, in an embodiment, the first coil segment 140a and the second coil segment 140b are wound outside the bobbin 130. In this embodiment, the first coil section 140a and the second coil section 140b may be fixed on the outer wall surface of the bobbin 130 by gluing, and the first coil section 140a and the second coil section 140b are wound outside the bobbin 130, so that the winding process of the first coil section 140a and the second coil section 140b can be completed on a straight-column-shaped winding tool, and thus the production efficiency is higher.
Regarding the winding structure of the coil segment.
The utility model discloses preferentially correspond a magnetic force line intensive district with two coil sections, in order to promote the effective utilization ratio to the magnetic force line, please refer to fig. 2, because the lower extreme of first coil section 140a and the upper end of second coil section 140b are closer to the magnetic force line intensive district, therefore the utility model discloses with the coiling number of turns in the voice coil wire layer of lower part of first coil section 140a be greater than the coiling number of turns in the voice coil wire layer of upper part thereof, and the coiling number of turns in the voice coil wire layer of upper part of second coil section 140b be greater than the coiling number of turns in the voice coil wire layer of lower part thereof, such setting, after inserting voice coil 120 in the magnetic gap, the lower extreme that the coiling number of turns is denser in first coil section 140a and the upper end that the coiling number of turns is denser in second coil section 140b concentrate on the region that the magnetic force line is dense, when sound generating device 1 works, the situation that BL is asymmetric due to different BL attenuations can be reduced, distortion of a frequency band near FO is improved, and the sensitivity of the voice coil 120 under large voltage is improved, so that the performance of the sound generating device is improved. Wherein FO is the natural resonant frequency FO of the loudspeaker in the low frequency band, and the distortion of the frequency band near the FO point is the largest in the effective audio frequency range of the normal loudspeaker.
Further, in some embodiments, the first coil section 140a and the second coil section 140b are formed by winding a continuous voice coil wire, which is advantageous in that the manufacturing process can be completed on a straight-column-shaped winding tool, so that the production efficiency is higher, the number of welding points is less, the uniformity of the overall structure is higher, and the structural stability is higher.
The utility model discloses first coil section 140a and second coil section 140b electrical property are established ties, can form by a continuous voice coil wire coiling and realize establishing ties through first coil section 140a and second coil section 140b and wire jumper 142 in the above-mentioned content. Of course, when the first coil section 140a and the second coil section 140b are electrically connected in series, the first coil section 140a and the second coil section 140b may be formed by winding different voice coil wires instead of one voice coil wire, and the jumper 142 is a part of the voice coil wire in the first coil section 140a, or the jumper 142 is a part of the voice coil wire in the second coil section 140 b.
Because the first coil section 140a and the second coil section 140b are electrically connected in series, in the working process of the voice coil 120, the position of the voice coil 120 in the magnetic gap can be modeled according to the electromotive force difference between the first coil section 140a and the second coil section 140b, so that the position of the voice coil 120 can be calculated in real time, the vibration system of the sound generating device 1 can be optimized in real time, and the acoustic performance of the sound generating device 1 can be improved. Specifically, when the two coil segments are connected in series, the positions of the first coil segment 140a and the second coil segment 140b in the magnetic field of the magnetic gap are different, so the magnetic induction intensities passing through the first coil segment 140a and the second coil segment 140b are also different, and the induced electromotive forces generated by the first coil segment 140a and the second coil segment 140b are also different, and by detecting the voltage difference at the connection point of the first coil segment 140a and the second coil segment 140b, the relative position of the first coil segment 140a and the second coil segment 140b in the magnetic field, that is, the vibration position of the whole voice coil 120 in the magnetic field, can be calculated in real time.
If the voice coil 120 deviates from the preset position in the vibration process, the positions of the first coil section 140a and the second coil section 140b will change, and at this time, the induced electromotive force generated by the first coil section 140a and the second coil section 140b will change, that is, the voltage difference at the connection of the first coil section 140a and the second coil section 140b changes, and the overall deviation of the voice coil 120 can be calculated by detecting the change of the voltage difference, so that the voice coil 120 can return to the preset position again by means of externally inputting the compensation current, the position of the voice coil 120 is corrected, the vibration stability and symmetry of the voice coil 120 in the magnetic field are improved, and the overall acoustic performance of the sound generating device 1 is effectively improved.
Referring to fig. 3, the first coil section 140a, the second coil section 140b and the jumper wire 142 are connected in series in a manner of a continuous voice coil wire, so that the number of the voice coil wire layers 141 of the coil 140 can be set as required, for example, when the voice coil wire layers 141 of the first coil section 140a and the second coil section 140b are three odd layers, the input line 143 of the coil 140 is disposed on one side of the first coil section 140a, and the output line 144 of the coil 140 is disposed on one side of the second coil section 140b, so that in the winding process of the coil 140, the first coil section 140a and the second coil section 140b can be wound on one winding tool from top to bottom in sequence, and the winding process is simple. Under the condition that the first coil section 140a and the second coil section 140b are both odd layers, the voice coil wire layers 141 in the first coil section 140a and the second coil section 140b may also be different, as shown in fig. 4, the voice coil wire layers 141 in the first coil section 140a are 3 layers, and the voice coil wire layers 141 in the second coil section 140b are 1 layer, or as shown in fig. 5, the voice coil wire layers 141 in the first coil section 140a are 5 layers, and the voice coil wire layers 141 in the second coil section 140b are 3 layers, or as shown in fig. 6, the voice coil wire layers 141 in the first coil section 140a are 1 layer, and the voice coil wire layers 141 in the second coil section 140b are 3 layers. In the above arrangement, one jumper wire 142 is provided, and the jumper wire 142 is connected to the outermost voice coil wire layer 141 in the first coil section 140a and the innermost voice coil wire layer 141 in the second coil section 140b (for example, fig. 4 and 5).
In addition, the voice coil wire layers 141 in the first coil segment 140a and the second coil segment 140b may be even-numbered, as shown in fig. 7, the number of the voice coil wire layers 141 in the first coil segment 140a and the second coil segment 140b is the same and is four, two jumpers 142 are provided, one jumper 142 connects the voice coil wire layer 141 in the middle of the first coil segment 140a and the voice coil wire layer 141 in the innermost side of the second coil segment 140b, and the other jumper 142 connects the voice coil wire layer 141 in the outermost side of the first coil segment 140a and the voice coil wire layer 141 in the outermost side of the second coil segment 140 b. The winding manner enables the input line 143 and the output line 144 of the coil 140 to be located on the same side of the first coil section 140a, which is advantageous in that, in the vibration process of the voice coil 120, the input line 143 and the output line 144 are not easily stressed to generate a polarization phenomenon, and the sound quality is improved.
To sum up, the utility model discloses can adopt the voice coil wire layer 141 of the same quantity in first coil section 140a and second coil section 140b, wherein voice coil wire layer 141 can be odd number layer or even number layer, when being odd number layer voice coil wire layer 141, input line 43 and output line 44 are located first coil section 140a and second coil section 140b respectively, can be at voice coil 120 coiling in-process from top to bottom coiling in proper order on a wire winding frock like this, coiling in-process efficiency is higher, when being even number layer voice coil wire layer 141, input line 43 and output line 44 can be located same one side of first coil section 140a or be located same one side of second coil section 140b, so voice coil 120 vibration in-process, be difficult to produce stress at input line 143 and output line 144 and cause the polarization phenomenon, tone quality obtains promoting. It should be mentioned that the voice coil wire layers 141 with the same number in the first coil segment 140a and the second coil segment 140b may be used under the condition that the magnetic circuits in the sound generating apparatus 1 are relatively uniform and symmetrical, that is, the voice coil 120 with symmetrical design is matched with the symmetrical magnetic circuits, so as to obtain a more symmetrical BL curve, thereby improving the sound quality. Similarly, when different numbers of voice coil wire layers 141 are adopted in the first coil section 140a and the second coil section 140b, considering that there is an asymmetric situation in the magnetic circuit design, the number of the voice coil wire layers 141 in the coil section corresponding to the region with dense magnetic lines of force is also large, and the number of the voice coil wire layers 141 in the coil section corresponding to the region with dense and non-dense magnetic lines of force is also correspondingly reduced, so that the asymmetry of the magnetic circuit design can be compensated, the situation of BL asymmetry caused by different BL attenuations is reduced, and a more symmetric BL curve effect is obtained.
Regarding the structure of the voice coil wire.
The voice coil wire may be an enameled wire, and the diameter of the voice coil wire in the voice coil 120 may be selected to be about 0.03-0.20 mm. If the wire diameter is 0.20mm or more, the specific gravity of the voice coil 120 becomes large, and the vibration loss becomes large. If the wire diameter is 0.03mm or less, the strength tends to be insufficient, and it is difficult to realize a large power output of the sound generating apparatus 1. Because there is the interval between first coil section 140a and the second coil section 140b, has increased the longitudinal height of coil 140, and in the vibration process of voice coil 120, first coil section 140a and coil 140 section always will have partial structure to be in the dense area of magnetic force line, so can effectively promote BL linear region, avoid the distortion phenomenon.
In some embodiments, the conductivity of the voice coil wire in the first coil section 140a and the voice coil wire in the second coil section 140b are the same. The electrical conductivity of the voice coil wire in the first coil section 140a is the same as that of the voice coil wire in the second coil section 140b, and the first coil section 140a and the second coil section 140b may be formed by winding a continuous voice coil wire, or when the first coil section 140a and the second coil section 140b are wound by two different voice coil wires, the materials and structures of the first coil section 140a and the second coil section 140b are the same, and the above arrangement makes the BL curve of the voice coil 120 more symmetrical and the acoustic performance of the sound generating apparatus 1 better.
In addition, the electric conductivities of the voice coil wire in the first coil section 140a and the voice coil wire in the second coil section 140b may also be different, for example, the conductor layer 1411 of the voice coil wire in the first coil section 140a is a copper wire, and the conductor layer 1411 of the voice coil wire in the second coil section 140b is a copper-clad aluminum wire, so that the density of the copper-clad aluminum wire is less than the density of the copper wire, and the weight of the second coil section 140b with the same total length is less than the weight of the first coil section 140a, that is, compared with the prior art in which the conductor layers 1411 of the voice coil wire in the first coil section 140a and the voice coil wire in the second coil section 140b both adopt copper wires, the weight of the voice coil 120 of the present invention is reduced, thereby improving the sensitivity of the voice coil 120.
In some embodiments, the wire diameter of the voice coil wire in the first coil section 140a is the same as the wire diameter of the voice coil wire in the second coil section 140b, and such an arrangement provides that when the total wire length of the first coil section 140a and the second coil section 140b is the same, the driving forces of the first coil section 140a and the second coil section 140b are equivalent, and the BL linear region of the voice coil 120 is more symmetrical and the acoustic performance is better. Or the wire diameter of the voice coil wire in the first coil section 140a is different from the wire diameter of the voice coil wire in the second coil section 140b, so that the material selection limit of the voice coil wire in the manufacturing process of the first coil section 140a and the second coil section 140b is less, and the manufacturing is easier.
As can be seen from the above, one end of the voice coil 120 extends into the magnetic gap, and the central magnetic conductive plate 222 is disposed on the upper surface of the inner magnetic path portion 220, since the magnetic lines of force in the magnetic circuit system 20 of the sound generating apparatus 1 can be gathered by the action of the central magnetic conductive plate 222 to be fully utilized, wherein the height section of the magnetic gap corresponding to the central magnetic conductive plate 222 is a magnetic line-dense region, in order to effectively utilize the magnetic lines of force and achieve the driving sensitivity of the voice coil 120, in the present application, the width of the gap between the second coil section 140b and the first coil section 140a is smaller than the thickness of the central magnetic conductive plate 222, and in a natural state, the gap between the second coil section 140b and the first coil section 140a is within the height section of the central magnetic conductive plate 222; and because the width of the gap between the second coil section 140b and the first coil section 140a is smaller than the thickness of the central magnetic conductive plate 222, and the lower end of the first coil section 140a and the upper end of the second coil section 140b are both located in the dense magnetic line region, the first coil section 140a and the second coil section 140b can both cut the magnetic lines of force during the starting stage, and then can push the diaphragm 110 upward or downward.
Referring to fig. 8, in some embodiments, the total length of the voice coil wire in the first coil section 140a is the same as the total length of the voice coil wire in the second coil section 140b, and the center of the gap between the first coil section 140a and the second coil section 140b is located on the horizontal center line of the central magnetic conductive plate 222. In this embodiment, the total length of the voice coil wire in the first coil section 140a is the same as the total length of the voice coil wire in the second coil section 140b, the symmetry of the BL is good, and the nonlinear distortion is reduced.
Referring to fig. 9, in some embodiments, the total length of the voice coil wire in the first coil section 140a is greater than the total length of the voice coil wire in the second coil section 140b, and the center of the gap between the first coil section 140a and the second coil section 140b is located below the horizontal center line of the central magnetic conductive plate 222.
Referring to fig. 10, in some embodiments, the total length of the voice coil wire in the first coil section 140a is smaller than the total length of the voice coil wire in the second coil section 140b, and the center of the gap between the first coil section 140a and the second coil section 140b is located above the horizontal center line of the central magnetic conductive plate 222. In this embodiment, the peak of the vibration of the voice coil 120 in the direction of the second coil section 140b (i.e., downward vibration in the figure) is large, which is also beneficial for expressing a specific desired sound quality effect, while effectively improving the nonlinear distortion.
The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims (11)
1. A voice coil, comprising:
a cylindrical skeleton is formed; and
the coil is formed by winding a voice coil wire outside the framework, wherein the coil at least comprises a first coil section and a second coil section which are arranged at intervals in the axial direction of the framework, and a jumper wire is arranged between the first coil section and the second coil section so as to serially connect and conduct the first coil section and the second coil section.
2. The voice coil of claim 1, wherein the voice coil wire in the first coil section and the voice coil wire and the jumper wire in the second coil section are one continuous voice coil wire.
3. The voice coil of claim 1, wherein the jumper is part of a voice coil wire in the first coil section or the jumper is part of a voice coil wire in the second coil section.
4. The voice coil as claimed in any one of claims 1 to 3, wherein the coil has an input line and an output line, the input line being provided in the first coil section and the output line being provided in the second coil section, or both the input line and the output line being provided in the first coil section.
5. The voice coil according to any one of claims 1 to 3, wherein the first coil section and the second coil section have the same number of voice coil wire layers or have different numbers of voice coil wire layers.
6. The voice coil of claim 5, wherein a jumper between the first coil segment and the second coil segment is one or at least two.
7. The voice coil of claim 1, wherein a wire diameter of the voice coil wire in the first coil section and a wire diameter of the voice coil wire in the second coil section are the same or different.
8. A sound generating device comprising a casing and a magnetic circuit system housed in the casing, wherein the sound generating device further comprises the voice coil according to any one of claims 1 to 7, the magnetic circuit system is formed with a magnetic gap, and one end of the voice coil extends into the magnetic gap.
9. The sound generating apparatus as claimed in claim 8, wherein the magnetic circuit system comprises a magnetic yoke, a central magnetic circuit portion and a side magnetic circuit portion, the central magnetic circuit portion and the side magnetic circuit portion are disposed on the magnetic yoke, the magnetic gap is formed between the central magnetic circuit portion and the side magnetic circuit portion, a central magnetic conductive plate is disposed on an upper surface of the central magnetic circuit portion, and a width of the gap between the first coil segment and the second coil segment is smaller than a thickness of the central magnetic conductive plate.
10. The apparatus according to claim 9, wherein the total length of the voice coil wire in said first coil section is the same as the total length of the voice coil wire in said second coil section, and wherein the center of the gap between said first and second coil sections is located on the horizontal centerline of said central magnetically permeable plate.
11. The apparatus according to claim 10 wherein said first coil section is located above said second coil section;
the total length of the voice coil wire in the first coil section is greater than that of the voice coil wire in the second coil section, and the center of a gap between the first coil section and the second coil section is positioned below the horizontal center line of the central magnetic conduction plate;
or the total length of the voice coil wire in the first coil section is smaller than that of the voice coil wire in the second coil section, and the center of the gap between the first coil section and the second coil section is located above the horizontal center line of the central magnetic conduction plate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021243501X | 2020-06-29 | ||
| CN202021243501 | 2020-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212392994U true CN212392994U (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022361076.0U Active CN212392994U (en) | 2020-06-29 | 2020-10-21 | Voice coil and sound generating device |
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|---|---|
| CN (1) | CN212392994U (en) |
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2020
- 2020-10-21 CN CN202022361076.0U patent/CN212392994U/en active Active
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