CN210183537U - Voice coil assembly and loudspeaker - Google Patents
Voice coil assembly and loudspeaker Download PDFInfo
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- CN210183537U CN210183537U CN201921522376.3U CN201921522376U CN210183537U CN 210183537 U CN210183537 U CN 210183537U CN 201921522376 U CN201921522376 U CN 201921522376U CN 210183537 U CN210183537 U CN 210183537U
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Abstract
The utility model discloses a voice coil assembly and speaker, including the main part voice coil loudspeaker voice coil, the main part voice coil loudspeaker voice coil adopts first wire rod coiling to form, first wire rod is the electrically conductive wire rod that coats outward with self-adhesive paint, the top of main part voice coil loudspeaker voice coil bonds there is connecting coil, connecting coil adopts second wire rod coiling to form, the second wire rod is the wire rod that coats outward with self-adhesive paint, the density of second wire rod is less than or equal to the density of first wire rod; the main part voice coil is formed with the connection coil next-door neighbour coiling and bonds together through the self-adhesion lacquer on first wire rod and second wire rod surface, and the main part voice coil is used for being connected with external circuit, the connection coil does not connect with external circuit. The utility model discloses a voice coil loudspeaker voice coil subassembly can reduce the speaker distortion, improves the acoustic performance of speaker.
Description
Technical Field
The utility model relates to an electroacoustic technology field, in particular to voice coil loudspeaker voice coil subassembly and speaker.
Background
The loudspeaker is the common electroacoustic transduction device that changes the electric energy into the acoustic energy, and the loudspeaker mainly includes vibration system, magnetic circuit and auxiliary system, and wherein vibration system includes voice coil loudspeaker voice coil and vibrating diaphragm subassembly, and magnetic circuit forms the magnetic gap in order to accept the voice coil loudspeaker voice coil, and the voice coil loudspeaker voice coil drives the vibrating diaphragm vibration with vibrating diaphragm fixed connection and voice coil loudspeaker voice coil circular telegram back under magnetic circuit's magnetic field effect to produce sound.
However, for the conventional loudspeaker, because the voice coil is in direct contact with the bottom of the diaphragm, most of the structure of the voice coil is located above the position of the dense magnetic induction line region, the driving force factor BL value (the length L of a wire with a certain number of turns is multiplied by the magnetic flux density B in unit area) is not high, the magnetic field cannot be fully utilized, the driving force of the up-and-down vibration of the main voice coil is unbalanced, the loudspeaker is distorted, and the acoustic performance of the loudspeaker is affected; the voice coil loudspeaker voice coil itself has the impedance to be heated after the circular telegram, is equivalent to a heating wire, and when the speaker vibrates from top to bottom, the voice coil loudspeaker voice coil can send a large amount of heats, and the vibrating diaphragm or the centering branch piece with voice coil loudspeaker voice coil direct contact can suffer destruction, leads to the vibrating diaphragm to become the rupture of membranes, and the centering branch piece influences the use of product because the material problem is heated the condition that can the carbonization can appear.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the problems in the prior art are overcome, and the voice coil assembly and the loudspeaker which can improve the acoustic performance and prolong the service life of the vibrating diaphragm and the centering support sheet are provided.
For solving the technical problem, the utility model discloses a technical scheme is: the utility model provides a voice coil loudspeaker voice coil subassembly, includes the main part voice coil loudspeaker voice coil, the main part voice coil loudspeaker voice coil adopts first wire rod coiling to form, first wire rod is the conductive wire rod that has the self-adhesive lacquer of scribbling outward, and its characterized in that is: a connecting coil is bonded to the top of the main voice coil, the connecting coil is formed by winding a second wire, the second wire is coated with self-adhesive paint, and the density of the second wire is smaller than or equal to that of the first wire;
the main part voice coil is formed with the connection coil next-door neighbour coiling and bonds together through the self-adhesion lacquer on first wire rod and second wire rod surface, and the main part voice coil is used for being connected with external circuit, the connection coil does not connect with external circuit.
As a preferable technical solution, the second wire is a conductive wire or an insulating wire.
As a preferable technical solution, the height of the main body voice coil is greater than the height of the connection coil.
As a preferred technical scheme, the first wire is a copper enameled wire or a copper-clad aluminum enameled wire coated with self-adhesive paint, and the second wire is a copper-clad aluminum enameled wire or an aluminum enameled wire coated with self-adhesive paint.
As a preferable technical solution, the wire diameter of the second wire is smaller than the wire diameter of the first wire; or the wire diameter of the second wire is equal to that of the first wire; or the wire diameter of the second wire is larger than that of the first wire.
As a preferable technical solution, the thickness of the connection coil is smaller than that of the main body voice coil;
the connecting coil is positioned on the inner side of the top surface of the main body voice coil, and an accommodating space is formed between the outer side surface of the connecting coil and the outer side of the top surface of the main body voice coil;
or the connecting coil is positioned on the outer side of the top surface of the main body voice coil, and an accommodating space is formed between the inner side surface of the connecting coil and the inner side of the top surface of the main body voice coil;
or, connect the coil and be located the intermediate position of the top surface of main part voice coil loudspeaker voice coil, connect the outside surface of coil with between the outside of the top surface of main part voice coil loudspeaker voice coil, and connect the inside surface of coil with all form the accommodation space between the inboard of the top surface of main part voice coil loudspeaker voice coil.
As a preferable technical scheme, the connection coil is located on the inner side of the top surface of the main voice coil, grooves which are opened towards the inner side and the top surface of the main voice coil are correspondingly formed in the top of the main voice coil, and the outer side surfaces of the bottom surface and the lower end of the connection coil are bonded with the bottom surface and the side surface of the groove of the main voice coil;
or, connect the coil and be located the outside of main part voice coil loudspeaker voice coil top surface, the top correspondence of main part voice coil loudspeaker voice coil be equipped with to main part voice coil loudspeaker voice coil outside and top surface open-ended recess, the bottom surface and the lower extreme medial surface of connecting the coil with the bottom surface and the side bonding of the recess of main part voice coil loudspeaker voice coil.
As a preferable technical solution, the thickness of the connection coil is equal to the thickness of the main body voice coil, the inner circumference diameter of the connection coil is equal to the inner circumference diameter of the main body voice coil, and the outer circumference diameter of the connection coil is equal to the outer circumference diameter of the main body voice coil.
For solving the technical problem, the utility model discloses a technical scheme is: a loudspeaker comprising a vibration system and a magnetic circuit system, the vibration system comprising a diaphragm and a voice coil assembly, characterized in that: the voice coil assembly is composed of the main voice coil and the connecting coil bonded to the top of the main voice coil, the top surface of the connecting coil is connected with the vibrating diaphragm, and the main voice coil extends into a magnetic gap of the magnetic circuit system.
As a preferred technical solution, the vibration system further includes a centering branch piece, and the centering branch piece includes an inner fixing portion, an outer fixing portion, and a deformation portion connecting between the inner fixing portion and the outer fixing portion;
the vibrating diaphragm comprises a central part, a ring-folded part and an edge part from inside to outside, the inner fixing part is connected with the central part, and the outer fixing part is connected with the edge part;
the top surface of the connecting coil is connected with the inner fixing part.
As a preferable technical solution, the magnetic circuit system includes a magnetic yoke, the magnetic yoke has an upper surface facing the vibration system and a lower surface opposite to the upper surface, and a concave groove for avoiding the main voice coil is provided at a position of the upper surface corresponding to the magnetic gap.
As a preferable technical solution, a reinforcing portion protruding from the lower surface is provided at a position of the lower surface corresponding to the recessed groove, and a width of the reinforcing portion is larger than a width of the recessed groove.
After the technical scheme is adopted, the beneficial effects of the utility model are that:
in the voice coil assembly and the loudspeaker of the utility model, the connecting coil is bonded at the top of the main voice coil, so that most of the main voice coil is arranged in the magnetic induction line dense area, the BL value is improved, and the driving force of the main voice coil vibrating up and down is balanced;
the density of the second wire is less than or equal to that of the first wire, so that the weight of the connecting coil can be reduced, namely the weight burden of the main voice coil caused by the up-and-down movement of the main voice coil is reduced;
the connection coil and the main voice coil are bonded together through respective self-adhesive paint, so that the working procedures in the bonding process of the connection coil and the main voice coil are reduced, the bonding efficiency of the connection coil and the main voice coil is improved, and the connection coil and the main voice coil are bonded through the respective self-adhesive paint, so that the connection coil and the main voice coil are firmer;
the main body voice coil is used for being connected with an external circuit, the connecting coil is not connected with the external circuit, and the connecting coil can only transfer a small amount of heat of the main body voice coil or does not transfer the heat of the main body voice coil to the vibrating diaphragm or the centering branch piece so as to protect the vibrating diaphragm and the centering branch piece from being damaged in the working process of the loudspeaker; meanwhile, the connecting coil can also play a good role in heat dissipation, so that the temperature of the main voice coil is reduced;
to sum up, the utility model discloses a voice coil loudspeaker voice coil subassembly and speaker can effectively reduce the speaker distortion, improve the acoustic performance of speaker.
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 a schematic structural section view of a speaker according to the present invention;
fig. 2 is an exploded view of the voice coil assembly of the present invention;
FIG. 3 is a schematic structural section view of the connecting coil located at the middle position of the main voice coil when the diameter of the connecting coil is smaller than that of the main voice coil of the present invention;
FIG. 4 is a schematic sectional view of the structure of the present invention, wherein the connecting coil is located at the outer side of the main voice coil when the diameter of the connecting coil is smaller than that of the main voice coil;
FIG. 5 is a schematic sectional view of the structure of the present invention, wherein the connecting coil is located at the inner side of the main voice coil when the diameter of the connecting coil is smaller than that of the main voice coil;
fig. 6 is a schematic sectional view of the structure of the present invention, wherein the connecting coil has the same thickness as the main voice coil, and the connecting coil has the same diameter as the main voice coil;
FIG. 7 is a schematic sectional view of the position structure where the wire diameter of the connection coil is greater than the wire diameter of the main voice coil when the thickness of the connection coil is equal to the thickness of the main voice coil according to the present invention;
FIG. 8 is a schematic sectional view of the structure of the present invention, wherein the connecting coil is located outside the main voice coil when the diameter of the connecting coil is larger than that of the main voice coil;
FIG. 9 is a schematic sectional view of the structure of the present invention, wherein the connecting coil is located at the inner side of the main voice coil when the diameter of the connecting coil is larger than that of the main voice coil;
FIG. 10 is a schematic sectional view of the structure of the present invention, wherein the connecting coil is located at the middle position of the main voice coil when the diameter of the connecting coil is larger than that of the main voice coil;
fig. 11 is a schematic sectional view of the position structure where the wire diameter of the connection coil is smaller than the wire diameter of the main voice coil when the thickness of the connection coil is equal to the thickness of the main voice coil according to the present invention;
fig. 12 is a schematic sectional view of the structure of the present invention, wherein the connecting coil is located at the inner side of the main voice coil when the diameter of the connecting coil is equal to the diameter of the main voice coil;
FIG. 13 is a schematic sectional view of the structure of the present invention, wherein the connecting coil is located at the outer side of the main voice coil when the diameter of the connecting coil is equal to the diameter of the main voice coil;
FIG. 14 is a schematic sectional view of the structure of the present invention, wherein the connecting coil is located at the middle position of the main voice coil when the diameter of the connecting coil is equal to the diameter of the main voice coil;
fig. 15 is a graph of the voice coil bl (x) of the present invention.
The reference numbers illustrate:
1. voice coil loudspeaker voice coil subassembly, 11, main part voice coil loudspeaker voice coil, 12, connect the coil, 2, magnetic yoke, 3, vibrating diaphragm, 4, the face that bonds of voice coil loudspeaker voice coil subassembly, 5, depressed groove, 6, reinforcement portion, the BL curve of A, prior art main part voice coil loudspeaker voice coil, B, add the BL curve of connecting the coil back main part voice coil loudspeaker voice coil.
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.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating 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 voice coil structure, this voice coil structure can be applied to in the electronic equipment that can sound production such as speaker, earphone, cell-phone.
As shown in fig. 1 and fig. 2, the voice coil assembly includes a main voice coil 11, the main voice coil 11 is formed by winding a first wire, the first wire is a conductive wire coated with self-adhesive paint, a connection coil 12 is bonded to the top of the main voice coil 11, the connection coil 12 is formed by winding a second wire, the second wire is a wire coated with self-adhesive paint, and the density of the second wire is less than or equal to that of the first wire.
Main part voice coil 11 forms with the adjacent coiling of connection coil 12, and bonds together through the self-adhesion lacquer on first wire rod and second wire rod surface under the effect of hot-blast, and connection coil 12 only can play the supporting role to main part voice coil 11, and main part voice coil 11 is used for being connected with external circuit, and connection coil 12 is not connected with external circuit. Therefore, in the up-and-down vibration process of the main body voice coil 11, the connecting coil 12 can only transmit a small amount of heat of the main body voice coil 11 or does not transmit the heat of the main body voice coil 11 to the vibrating diaphragm 3 or the centering branch piece, so that the vibrating diaphragm 3 and the centering branch piece are protected from being damaged in the working process; meanwhile, part of the heat of the main voice coil 11 is transferred to the connection coil 12 for heat dissipation, so that the connection coil 12 can also play a good role in heat dissipation, and the temperature of the main voice coil 11 is reduced.
The connection between connection coil 12 and main part voice coil 11 bonds through respective self-adhesion lacquer, has not only reduced the process of connection coil 12 with main part voice coil 11 bonding in-process, has improved the bonding efficiency of connection coil 12 with main part voice coil 11, bonds through respective self-adhesion lacquer on connection coil 12 and the main part voice coil 11 moreover, and is more firm.
Since the second coil is not connected to an external circuit, the second wire may be a conductive wire or an insulating wire, and does not affect the vertical vibration of the main voice coil 11 under the action of the magnetic field when the main voice coil is energized.
In order to further determine that the density of the second wire is less than or equal to that of the first wire, the first wire can be selected from a copper enameled wire or a copper-clad aluminum enameled wire externally coated with self-adhesive paint, and the second wire can be selected from a copper-clad aluminum enameled wire or an aluminum enameled wire externally coated with self-adhesive paint.
The density of the first wire and the density of the second wire are specifically explained as follows: and selecting a copper-clad aluminum enameled wire coated with self-adhesive paint, wherein the density of the second wire is the density of the copper-clad aluminum wire, and the density formula of the copper-clad aluminum wire is as follows in the traditional sense: the density of copper-clad aluminum is 8.89% copper content + 2.7% copper content (1-copper content%), the copper content is the volume ratio of copper to copper-clad aluminum conductor, and the density of copper is 8.9g/cm3While the volume ratio of copper to copper-clad aluminum conductor in the market is generally increased by 10%, 15% and 20%, in order to ensure that the density of the second wire is less than or equal to that of the first wire, the copper-clad aluminum conductor with the volume ratio of copper layer of 10% is preferred, and the density is 3.32g/cm3To ensure that the coil 12 is sufficiently lighter in weight than the body coil 11 to allow the body coil 11 to vibrate freely up and down in the magnetic field when energized.
In order to ensure that the main body voice coil vibrates up and down in the magnetic gap after being energized, the height of the main body voice coil must be ensured, and at the same time, the height of the main body voice coil is greater than the height of the connection coil in order to reduce the weight burden of the connection coil on the main body voice coil caused by the up-and-down vibration.
Since the density of the second wire is less than or equal to the density of the first wire and the height of the main voice coil is greater than the height of the connecting coil, the first wire and the second wire are not limited in wire diameter, and the wire diameter of the second wire can be smaller than that of the first wire; or the wire diameter of the second wire is equal to that of the first wire; or, the wire diameter of the second wire is larger than that of the first wire, and the normal operation of the voice coil assembly 1 is not affected no matter which wire diameter is selected.
In the present embodiment, the connection coil 12 is bonded on the top of the main voice coil 11, on one hand, the connection coil 12 plays a role in supporting between the main voice coil 11 and the diaphragm 3, so that most of the main voice coil 11 is disposed in the magnetic induction line dense area, so as to improve the BL value, and further, with reference to fig. 15, simulation results show that the BL value in this embodiment is greatly improved compared with the prior art, in fig. 15, after the connection coil 12 is added, the BL curve of the main voice coil 11 tends to be in a symmetrical state with respect to the 0 scale line in the BL (x) curve diagram, which indicates that the driving force for the main voice coil 11 to vibrate up and down is more balanced, so as to improve the output sensitivity of the product, and achieve the effect of reducing the distortion of the speaker, so as to ensure that the acoustic performance of the speaker is more excellent, on the other hand, the density of the second wire is less than or equal to the density of the first wire, the main voice coil 11 is energized and then freely vibrates up and down by the magnetic field.
In order to achieve better technical effects, the thickness of the connection coil 12 is smaller than that of the main body voice coil 11, so that less wire is used for the connection coil 12, and as shown in fig. 5, 9 and 12, when the connection coil 12 is located inside the top surface of the main body voice coil 11, an accommodating space is formed between the outer surface of the connection coil 12 and the outer side of the top surface of the main body voice coil 11.
Alternatively, as shown in fig. 4, 8 and 13, the connection coil 12 is located outside the top surface of the main body voice coil 11, and an accommodating space is formed between the inner side surface of the connection coil 12 and the inner side of the top surface of the main body voice coil 11.
Alternatively, as shown in fig. 3, 10 and 14, the connection coil 12 is located in the middle of the top surface of the main body voice coil 11, and an accommodating space is formed between the outer side surface of the connection coil 12 and the outer side of the top surface of the main body voice coil 11, and between the inner side surface of the connection coil 12 and the inner side of the top surface of the main body voice coil 11.
Connect and form voice coil loudspeaker voice coil subassembly bonding face 4 between the bottom surface of coil top surface and vibrating diaphragm 3, when bonding between general voice coil loudspeaker voice coil subassembly 1 and the vibrating diaphragm 3, the adhesive can spill over by the voice coil loudspeaker voice coil both sides in voice coil loudspeaker voice coil subassembly 1 and the fixed in-process of vibrating diaphragm 3, form the glue film of certain thickness, can with the magnetic circuit between form the collision, disturb magnetic circuit, and the accommodation space who forms between medial surface or lateral surface and main part voice coil loudspeaker voice coil 11's the top surface and the voice coil loudspeaker voice coil subassembly bonding face 4 of connecting coil 12 in this embodiment, can accept and spill over glue, and can provide more bonding spaces for the adhesive, increase the fastness between connecting coil 12 and vibrating diaphragm 3, voice coil loudspeaker voice coil subassembly 1 has been reduced at the up-and-down vibration in-process, voice coil loudspeaker.
Or, as shown in fig. 4, the connection coil 12 is located outside the top surface of the main body voice coil 11, the top of the main body voice coil 11 is correspondingly provided with a groove toward the outside of the main body voice coil 11 and the top surface, the inner side surface of the bottom surface and the lower end of the connection coil 12 are bonded with the bottom surface and the side surface of the groove of the main body voice coil 11, and the effect achieved by the bonding mode is the same as the effect of the connection coil 12 bonded in the groove inside the main body voice coil 11, which is not repeated.
Because the density of the material of the connection coil 12 is less than or equal to the density of the material of the main body voice coil 11, when the connection coil 12 is bonded with the main body voice coil 11, the thickness of the connection coil 12 can be allowed to be the same as that of the main body voice coil 11, moreover, the inner peripheral diameter of the connection coil 12 is equal to that of the main body voice coil 11, and the outer peripheral diameter of the connection coil 12 is equal to that of the main body voice coil 11, so that the purpose that the connection coil 12 is lighter than the main body voice coil is also achieved, most of the main body voice coil 11 is placed in a magnetic loop, the output sensitivity of a product is improved, the distortion of the loudspeaker is.
The utility model discloses a voice coil loudspeaker voice coil subassembly 1 is applied to the speaker more, and the speaker includes vibration system and magnetic circuit, and vibration system includes vibrating diaphragm 3 and voice coil loudspeaker voice coil subassembly 1, and voice coil loudspeaker voice coil subassembly 1 mentioned all is the voice coil loudspeaker voice coil subassembly 1 that mentions in the last embodiment, and the top surface of connecting coil 12 bonds with the underrun adhesive of vibrating diaphragm 3, and main part voice coil loudspeaker voice coil 11 stretches into in magnetic circuit's the magnetic gap, vibration about under the effect in magnetic field after 11 circular telegrams of main part voice coil loudspeaker voice coil, drive vibrating diaphragm 3 vibration then, sound. Since the speaker in this embodiment may include the voice coil assembly 1 in any of the above embodiments, the technical effects equivalent to those of the above embodiments can also be achieved, and will not be described again here.
In another embodiment, the vibration system further comprises a centering disk, wherein the centering disk comprises an inner fixing part, an outer fixing part and a deformation part connecting the inner fixing part and the outer fixing part.
The vibrating diaphragm 3 comprises a central part, a bending ring part and an edge part from inside to outside, the inner fixing part is connected with the central part, and the outer fixing part is connected with the edge part.
The top surface of the connection coil 12 is connected to the inner fixing portion. The centering support piece mainly has the functions of keeping the correct position of the voice coil assembly 1 in the magnetic gap, and keeping the vibration system to reciprocate only along the axial direction when the voice coil assembly 1 is stressed, so that the polarization phenomenon is avoided.
As shown in fig. 1, the magnetic circuit system includes a yoke 2, and an inner magnetic path portion and an outer magnetic path portion provided on the yoke 2 with a magnetic gap formed therebetween.
In this embodiment, the magnetic yoke 2 has an upper surface facing the vibration system and a lower surface opposite to the upper surface, and a concave groove 5 for avoiding the main voice coil 11 is disposed at a position of the upper surface corresponding to the magnetic gap. Providing a larger space for the up-and-down vibration of the body voice coil 11.
Because the upper surface is provided with the recessed groove 5, the thickness of the magnetic yoke 2 at the position of the recessed groove is reduced, in order to ensure the strength of the lower surface, a reinforcing part 6 protruding out of the lower surface is arranged at the position of the lower surface corresponding to the recessed groove 5, and the width of the reinforcing part 6 is greater than that of the recessed groove 5.
The above is only the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all of which are in the utility model discloses a conceive, utilize the equivalent structure transform that the content of the specification and the attached drawings did, or directly/indirectly use all to include in other relevant technical fields the patent protection scope of the present invention.
Claims (12)
1. The utility model provides a voice coil loudspeaker voice coil subassembly, includes the main part voice coil loudspeaker voice coil, the main part voice coil loudspeaker voice coil adopts first wire rod coiling to form, first wire rod is the conductive wire rod that has the self-adhesive lacquer for the overcoat, its characterized in that: a connecting coil is bonded to the top of the main voice coil, the connecting coil is formed by winding a second wire, the second wire is coated with self-adhesive paint, and the density of the second wire is smaller than or equal to that of the first wire;
the main part voice coil is formed with the connection coil next-door neighbour coiling and bonds together through the self-adhesion lacquer on first wire rod and second wire rod surface, and the main part voice coil is used for being connected with external circuit, the connection coil does not connect with external circuit.
2. The voice coil assembly of claim 1, wherein: the second wire is a conductive wire or an insulating wire.
3. The voice coil assembly of claim 1, wherein: the height of the main body voice coil is larger than that of the connecting coil.
4. The voice coil assembly of claim 1, wherein: the first wire is a copper enameled wire or a copper-clad aluminum enameled wire coated with self-adhesive paint, and the second wire is a copper-clad aluminum enameled wire or an aluminum enameled wire coated with self-adhesive paint.
5. The voice coil assembly of claim 1, wherein: the wire diameter of the second wire is smaller than that of the first wire; or the wire diameter of the second wire is equal to that of the first wire; or the wire diameter of the second wire is larger than that of the first wire.
6. The voice coil assembly of claim 1, wherein: the thickness of the connecting coil is smaller than that of the main body voice coil;
the connecting coil is positioned on the inner side of the top surface of the main body voice coil, and an accommodating space is formed between the outer side surface of the connecting coil and the outer side of the top surface of the main body voice coil;
or the connecting coil is positioned on the outer side of the top surface of the main body voice coil, and an accommodating space is formed between the inner side surface of the connecting coil and the inner side of the top surface of the main body voice coil;
or, connect the coil and be located the intermediate position of the top surface of main part voice coil loudspeaker voice coil, connect the outside surface of coil and follow between the outside of the top surface of main part voice coil loudspeaker voice coil, and connect the inside surface of coil with all form the accommodation space between the inboard of the top surface of main part voice coil loudspeaker voice coil.
7. The voice coil assembly of claim 6, wherein: the connecting coil is positioned on the inner side of the top surface of the main body voice coil, grooves which are opened towards the inner side and the top surface of the main body voice coil are correspondingly formed in the top of the main body voice coil, and the outer side surfaces of the bottom surface and the lower end of the connecting coil are bonded with the bottom surface and the side surface of the groove of the main body voice coil;
or, connect the coil and be located the outside of main part voice coil loudspeaker voice coil top surface, the top correspondence of main part voice coil loudspeaker voice coil be equipped with to main part voice coil loudspeaker voice coil outside and top surface open-ended recess, the bottom surface and the lower extreme medial surface of connecting the coil with the bottom surface and the side bonding of the recess of main part voice coil loudspeaker voice coil.
8. The voice coil assembly of claim 1, wherein: the thickness of connecting the coil equals the thickness of main part voice coil loudspeaker voice coil, the inner peripheral diameter of connecting the coil equals the inner peripheral diameter of main part voice coil loudspeaker voice coil, the outer peripheral diameter of connecting the coil equals the outer peripheral diameter of main part voice coil loudspeaker voice coil.
9. A loudspeaker comprising a vibration system and a magnetic circuit system, the vibration system comprising a diaphragm and a voice coil assembly, wherein: the voice coil assembly is as claimed in any one of claims 1 to 8, the top surface of the connection coil is connected to the diaphragm, and the main voice coil extends into the magnetic gap of the magnetic circuit system.
10. The loudspeaker of claim 9, wherein: the vibration system further comprises a centering branch piece, wherein the centering branch piece comprises an inner fixing part, an outer fixing part and a deformation part connected between the inner fixing part and the outer fixing part;
the vibrating diaphragm comprises a central part, a ring-folded part and an edge part from inside to outside, the inner fixing part is connected with the central part, and the outer fixing part is connected with the edge part;
the top surface of the connecting coil is connected with the inner fixing part.
11. The loudspeaker of claim 9, wherein: the magnetic circuit system comprises a magnetic guide yoke, the magnetic guide yoke is provided with an upper surface facing the vibration system and a lower surface opposite to the upper surface, and a concave groove used for avoiding the main voice coil is formed in the position, corresponding to the magnetic gap, of the upper surface.
12. The loudspeaker of claim 11, wherein: the position of the lower surface corresponding to the concave groove is provided with a reinforcing part protruding out of the lower surface, and the width of the reinforcing part is larger than that of the concave groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921522376.3U CN210183537U (en) | 2019-09-12 | 2019-09-12 | Voice coil assembly and loudspeaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921522376.3U CN210183537U (en) | 2019-09-12 | 2019-09-12 | Voice coil assembly and loudspeaker |
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| CN210183537U true CN210183537U (en) | 2020-03-24 |
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| CN201921522376.3U Active CN210183537U (en) | 2019-09-12 | 2019-09-12 | Voice coil assembly and loudspeaker |
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