CN102523545A - Voice coil and formation method and application thereof - Google Patents
Voice coil and formation method and application thereof Download PDFInfo
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- CN102523545A CN102523545A CN2011104450441A CN201110445044A CN102523545A CN 102523545 A CN102523545 A CN 102523545A CN 2011104450441 A CN2011104450441 A CN 2011104450441A CN 201110445044 A CN201110445044 A CN 201110445044A CN 102523545 A CN102523545 A CN 102523545A
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Abstract
The invention discloses a voice coil particularly used in moving-coil micro loudspeaker, a method for making the voice coil and application of the voice coil. The voice coil is wound by a lead wire; a plurality of lead wire layers are arranged on the voice coil in a radial direction; a plurality of lead wire coils are arranged in each lead wire layer in an axial direction; in the radial direction, an innermost lead wire layer, even-numbered middle lead wire layers and an outermost lead wire layer; the number of the lead wire rings of each middle lead wire layer is less than that of the lead wire rings of the innermost lead wire layer; the outermost lead wire layer comprises a first part and a second part; the first part is flush with the middle lead wire layer on the outermost side of the even numbered middle lead wire layers; and the lead wires from the first part tightly encircle the periphery of the even-numbered middle lead wire layers to reach the innermost lead wire layer, and then continuously wind the second part of the outermost lead wire layer along the innermost lead wire layer, so that the second part is flush with the innermost lead wire layer.
Description
Technical field
The present invention relates to a kind of novel voice coil loudspeaker voice coil, its formation method and purposes, this voice coil loudspeaker voice coil is particularly useful for the moving-coil type Microspeaker.
Background technology
In recent years, the structure of some communication apparatus is tending towards miniaturization, for example, and mobile phone, intercom etc.Thus, increasingly high to the performance and the structural requirement of employed parts in the miniaturization communication apparatus (for example, moving-coil type Microspeaker etc.).With regard to the moving-coil type Microspeaker, wherein used voice coil loudspeaker voice coil is to influence the sensitivity of loud speaker and the Primary Component of tonequality.
The conventional operating position of voice coil loudspeaker voice coil in the moving-coil type Microspeaker is as shown in Figure 1.The moving-coil type Microspeaker mainly is made up of parts such as voice coil loudspeaker voice coil 1, vibrating diaphragm 2, magnetic circuit system 3 and shells 4.In this moving-coil type Microspeaker, vibrating diaphragm 2 combines through adhesive and voice coil loudspeaker voice coil 1, and voice coil loudspeaker voice coil 1 is placed in the magnetic circuit system 3.When feeding alternating current in the voice coil loudspeaker voice coil 1, voice coil loudspeaker voice coil 1 is activated power and moves in the magnetic field that magnetic circuit system 3 produces, and the motion of voice coil loudspeaker voice coil 1 will drive the vibrating diaphragm 2 that combines with it and also vibrate, and sound thus.As can be seen from Figure 1, vibrating diaphragm 2 and magnetic circuit system 3 are generally about 0.4 millimeter-1.0 millimeters separately one apart from s, think that vibrating diaphragm 2 leaves the space together with the up-down vibration of voice coil loudspeaker voice coil 1, avoid vibrating diaphragm 2 to touch magnetic circuit system 3.And in the prior art, in order to reduce the resonance frequency of loud speaker, the Oscillation Amplitude with vibrating diaphragm improves usually, this make distance between vibrating diaphragm and the magnetic circuit system be provided with usually big (with respect to the size of voice coil loudspeaker voice coil).
The conventional voice coil loudspeaker voice coil that is used for the moving-coil type Microspeaker normally by lead (for example; Forming by copper) coiling forms; Form (promptly diametrically; The direction of lead coiling) structure that has a plurality of conductor layers and on being positioned at axially, have a plurality of loop in each conductor layer of (that is, vertical direction) with the lead coiling.As shown in Figure 2, the partial cross section cutaway view of conventional voice coil loudspeaker voice coil 1 is shown, wherein arrow is represented the coiling order of each conductor layer; This voice coil loudspeaker voice coil 10 comprises diametrically the conductor layer 11,12,13 and 14 of continuous coiling successively; Be known that the round shape thing shown in each conductor layer representes the cross section of lead, thus in each layer the quantity of circle shape thing corresponding to the quantity of the loop that is had in each layer; Also be; The quantity of the loop in the conductor layer 11 is 15, and the quantity of the loop in the conductor layer 12 is 14, and the quantity of the loop in the conductor layer 13 is 14; The quantity of the loop in the conductor layer 14 is 14, makes that this voice coil loudspeaker voice coil totally is with respect to radially basic symmetrical structure.
Yet; With reference to figure 1 and Fig. 2; Since between vibrating diaphragm 2 and the magnetic circuit system 3 apart from s be provided with big (with respect to the size of voice coil loudspeaker voice coil); Consider that conventional voice coil loudspeaker voice coil with respect to radially basic symmetrical structure, makes voice coil loudspeaker voice coil 1 not be positioned at the centre position in the magnetic field of magnetic circuit system 3 generations, but deflection vibrating diaphragm 2 one sides.This makes voice coil loudspeaker voice coil when moving up and down, and suffered magnetic field force is unbalanced, can produce serious harmonic distortion thus, and then influences the sensitivity and the tonequality of loud speaker.
Summary of the invention
To the problem that exists in the prior art; The present invention provides a kind of novel voice coil loudspeaker voice coil that is particularly useful for the moving-coil type Microspeaker; It can reduce harmonic distortion to a great extent, improves the sensitivity and the tonequality of moving-coil type Microspeaker, and has very high functional reliability.
On the one hand; The present invention provides a kind of voice coil loudspeaker voice coil (being particularly useful for the moving-coil type Microspeaker); It is by a lead---preferably being processed by copper, copper alloy, aluminum or aluminum alloy---continuously coiling form, on radially (that is the direction of lead coiling), have a plurality of conductor layers and be positioned at axially (promptly; Direction perpendicular to the lead coiling) have a plurality of loop in each conductor layer on, this voice coil loudspeaker voice coil is comprising in the radial direction: inside conductor layer; Even number---is preferably two, four or six---, and central conductor layer, the quantity of the loop in each layer of this even number central conductor layer all lack than the quantity of the loop in the said inside conductor layer; And outermost conductor layer; It comprises first and second portion; Wherein, Outermost central conductor layer is substantially flush in the first of said outermost conductor layer and the said even number central conductor layer, from the lead of the continuous coiling of the first of said outermost conductor layer peripheral this even number central conductor layer that closely surrounds from said even number central conductor layer, until said inside conductor layer; Continue the second portion of the said outermost conductor layer of coiling then along said inside conductor layer, make the second portion of said outermost conductor layer and said inside conductor layer substantially flush.
In a preferred embodiment of voice coil loudspeaker voice coil of the present invention, the thickness of this voice coil loudspeaker voice coil one end is about 1: 6 to 1: 2 with the thickness ratio of the other end.Should be understood that " thickness " of voice coil loudspeaker voice coil among this paper is meant its thickness in the radial direction, that is, be equivalent to the thickness of voice coil loudspeaker voice coil at the conductor layer that is comprised in the radial direction, for example the thickness of an end of voice coil loudspeaker voice coil shown in Fig. 4 is T1, and the thickness of the other end is T2.
In a preferred embodiment of voice coil loudspeaker voice coil of the present invention, the quantity ratio of the loop in the quantity of the loop in each layer of said even number central conductor layer and the said inside conductor layer is about 1: 2 to 1: 4.
In a preferred embodiment of voice coil loudspeaker voice coil of the present invention, this voice coil loudspeaker voice coil also comprises the conductor layer that at least one is extra, and it is adjacent to the second portion coiling with said outermost conductor layer, and preferably has 2-4 loop.
On the other hand; The invention provides a kind of method that forms voice coil loudspeaker voice coil; Wherein this voice coil loudspeaker voice coil has a plurality of conductor layers and each conductor layer on being arranged in axially has a plurality of loop diametrically; This method comprises: a lead that is used for continuous this voice coil loudspeaker voice coil of coiling is provided, is preferably processed by copper, copper alloy, aluminum or aluminum alloy; Inside conductor layer of coiling; The coiling even number---is preferably two, four or six---central conductor layer, the quantity of the guide collar in each layer of this even number central conductor layer all lacks than the quantity of the loop in the said inside conductor layer successively; Outermost conductor layer of coiling, it comprises first and second portion, wherein first's coiling of this outermost conductor layer be with said even number central conductor layer in outermost central conductor layer substantially flush; Then, make, until said inside conductor layer from the lead of the continuous coiling of the first of said outermost conductor layer peripheral this even number central conductor layer that closely surrounds from said even number central conductor layer; Continue the second portion of the said outermost conductor layer of coiling along said inside conductor layer, make the second portion coiling of said outermost conductor layer for substantially flush with said inside conductor layer.
In a preferred embodiment of method of the present invention, the thickness of this voice coil loudspeaker voice coil one end is about 1: 6 to 1: 2 with the thickness ratio of the other end.
In a preferred embodiment of method of the present invention, the quantity ratio of the loop in the quantity of the loop in each layer of said even number central conductor layer and the said inside conductor layer is about 1: 2 to 1: 4.
In a preferred embodiment of method of the present invention, also comprise at least one the extra conductor layer of second portion coiling that is adjacent to said outermost conductor layer, preferably, the quantity of the loop in this at least one extra conductor layer is 2-4.
In above-mentioned embodiment of the present invention, the periphery of said lead is coated with the insulating barrier that thickness is about 0.01-0.05mm.
In above-mentioned embodiment of the present invention, the diameter of said lead is about 0.04-0.12 millimeter, is preferably the 0.06-0.10 millimeter.
The present invention also provides a kind of vibration component, and it comprises an aforesaid voice coil loudspeaker voice coil and a vibrating diaphragm, and wherein this vibrating diaphragm combines with the little end of the thickness of this voice coil loudspeaker voice coil through binding agent.
The present invention also provides a kind of moving-coil type Microspeaker, and it comprises aforesaid voice coil loudspeaker voice coil.
Description of drawings
With reference to following accompanying drawing exemplary of the present invention is described in detail.Should be understood that the exemplary of the present invention shown in the accompanying drawing does not limit the scope of the invention, and only be schematically, and each parts in the accompanying drawing or part may not proportionally draw, wherein:
Fig. 1 is the overall schematic cross sectional views of the structure of conventional moving-coil type Microspeaker;
Fig. 2 is the schematic partial cross section cutaway view that is used for the conventional voice coil loudspeaker voice coil of moving-coil type Microspeaker;
Fig. 3 produces the resolution chart of total harmonic distortion when being the conventional voice coil loudspeaker voice coil that in the moving-coil type Microspeaker, adopts among Fig. 2;
Fig. 4 is the schematic partial cross section cutaway view of the voice coil loudspeaker voice coil that is used for the moving-coil type Microspeaker according to an embodiment of the invention;
Fig. 5 is the schematic partial cross section profile that has the extra conductor layer of preferred setting according to the voice coil loudspeaker voice coil of one embodiment of the invention at the little end of thickness;
Fig. 6 is the overall schematic cross sectional views of in the moving-coil type Microspeaker, using according to the voice coil loudspeaker voice coil of one embodiment of the invention;
The resolution chart of the total harmonic distortion when Fig. 7 is the voice coil loudspeaker voice coil that in the moving-coil type Microspeaker, uses according to one embodiment of the invention; And
Fig. 8 to Figure 11 is the schematic partial cross section cutaway view of the various modification of voice coil loudspeaker voice coil of the present invention.
Specific embodiments
With reference to figure 4, a kind of voice coil loudspeaker voice coil that is particularly useful for the moving-coil type Microspeaker 10 according to one embodiment of the invention is shown.This voice coil loudspeaker voice coil 10 by a lead (for example; Copper, copper alloy, aluminum or aluminum alloy) continuously coiling form, on radially (that is the direction of lead coiling), have a plurality of conductor layers and be positioned at axially (promptly; Direction perpendicular to the lead coiling) has a plurality of loop in each conductor layer on; Be known that the round shape thing shown in each conductor layer representes the cross section of lead, thus in each layer the quantity of circle shape thing corresponding to the quantity of the loop that is had in each layer.Particularly, this voice coil loudspeaker voice coil 10 is comprising in the radial direction: inside conductor layer 101; Two (can be even number, be two in this example) central conductor layers 102 and 103, the quantity of the loop in the central conductor layer 101,102 is lacked than the quantity of the loop in the said inside conductor layer 101; And an outermost conductor layer 104, it comprises first 104 ' and second portion 104 "; Wherein, Outermost central conductor layer 103 flushes in the first 104 ' of said outermost conductor layer 104 and the said central conductor layer 102,103; Then from the lead of the continuous coiling of the first 104 ' of said outermost conductor layer 104 peripheral this central conductor layer 102,103 that closely surrounds from said central conductor layer 102,103; Until said inside conductor layer 101; Continue the second portion 104 of coiling outermost conductor layers 104 then along said inside conductor layer 101 ", make the second portion 104 of outermost conductor layer 104 " coiling is for flushing with said inside conductor layer 101.
In a preferred embodiment of the invention, the thickness of this voice coil loudspeaker voice coil one end is about 1: 6 to 1: 2 with the thickness ratio of the other end.In the instance shown in Fig. 4, the thickness of an end of this voice coil loudspeaker voice coil 10 (T1 shown in figure) and the thickness of the other end (T2 shown in figure) are than being 1: 2.
In a preferred embodiment of the invention, the quantity ratio of the loop in the quantity of the loop in each layer of said even number central conductor layer and the said inside conductor layer is about 1: 2 to 1: 4.In the instance shown in Fig. 4, the quantity ratio between the loop in loop in the central conductor layer 102 and the inside conductor layer 101 is 7: 15, and the quantity ratio between the loop in loop in the central conductor layer 103 and the inside conductor layer 101 is 1: 2.5.
In a preferred embodiment of the invention, this voice coil loudspeaker voice coil comprises the conductor layer that at least one is extra, and it is adjacent to the second portion coiling of said outermost conductor layer.Voice coil loudspeaker voice coil 10 ' as shown in Figure 5 is that with voice coil loudspeaker voice coil 10 differences shown in Fig. 4 this voice coil loudspeaker voice coil 10 ' comprises a second portion 104 that is adjacent to outermost conductor layer 104 " the extra conductor layer 105 of coiling.This extra conductor layer 105 can increase the cross section of the little end of voice coil loudspeaker voice coil thickness, makes this voice coil loudspeaker voice coil can be attached to the vibrating diaphragm in the loud speaker, the reliability in the raising work more firmly.Should be understood that can also coiling more than one extra conductor layer.
Preferably, the quantity of the loop in this at least one extra conductor layer is 2-4.In the preferred embodiment shown in Fig. 5, the quantity of the loop in this extra conductor layer 105 is 2.
With reference to figure 4 a kind of method that forms voice coil loudspeaker voice coil provided by the present invention is described below, wherein this voice coil loudspeaker voice coil has a plurality of conductor layers and each conductor layer on being arranged in axially has a plurality of loop diametrically.This method comprises: a lead that is used for continuous this voice coil loudspeaker voice coil of coiling is provided, is preferably processed by copper, copper alloy, aluminum or aluminum alloy; Inside conductor layer 101 of coiling; Coiling is two successively---can be even number, be two in this instance---central conductor layer 102,103, the quantity of the guide collar in the central conductor layer 102,103 is lacked than the quantity of the loop in the said inside conductor layer 101; Outermost conductor layer 104 of coiling, it comprises first 104 ' and second portion 104 ", wherein first's 104 ' coiling of this outermost conductor layer 104 for said central conductor layer 102 and 103 in outermost central conductor layer 103 flush; Then, make, until said inside conductor layer 101 from the lead of the continuous coiling of the first 104 ' of said outermost conductor layer 104 the peripheral central conductor layer 102 and 103 that closely surrounds from said central conductor layer 102 and 103; Continue the second portion 104 of coiling outermost conductor layers 104 along said inside conductor layer 101 ", make the second portion 104 of outermost conductor layer 104 " coiling is for flushing with said inside conductor layer 101.
In a preferred embodiment of the method for the invention, the thickness of this voice coil loudspeaker voice coil one end is about 1: 6 to 1: 2 with the thickness ratio of the other end.In the instance shown in Fig. 4, the thickness of an end of this voice coil loudspeaker voice coil 10 is 1: 2 with the thickness ratio of the other end.
In a preferred embodiment of the method for the invention, the quantity ratio of the loop in the quantity of the loop in each layer of said even number central conductor layer and the said inside conductor layer is about 1: 2 to 1: 4.In the instance shown in Fig. 4, the quantity ratio between the loop in loop in the central conductor layer 102 and the inside conductor layer 101 is 7: 15, and the quantity ratio between the loop in loop in the central conductor layer 103 and the inside conductor layer 101 is 1: 2.5.
In a preferred embodiment of the method for the invention, also comprise at least one the extra conductor layer of second portion coiling that is adjacent to said outermost conductor layer.As shown in Figure 5, this method also comprises the second portion 104 that is adjacent to outermost conductor layer 104 " the extra conductor layer 105 of (unmarked) coiling.This extra conductor layer 105 can increase the cross section of the little end of voice coil loudspeaker voice coil 10 ' thickness, makes this voice coil loudspeaker voice coil 10 ' can more firmly be attached to the vibrating diaphragm in the loud speaker, the reliability in the raising work.
In a preferred embodiment of the inventive method, the quantity of the loop in this at least one extra conductor layer is 2-4.In the preferred embodiment shown in Fig. 5, the quantity of the loop in this extra conductor layer 105 is 2.
In above-mentioned embodiment of the present invention, it is about 0.01 millimeter-0.05 millimeter insulating barrier that the periphery of said lead is coated with thickness.
In above-mentioned embodiment of the present invention, the diameter of said lead is about 0.04-0.12 millimeter, is preferably 0.06 millimeter-0.10 millimeter.
For advantage of the present invention is described, the moving-coil type Microspeaker that adopts voice coil loudspeaker voice coil of the present invention is carried out the total harmonic distortion test.In this total harmonic distortion test, the size of main body of moving-coil type Microspeaker is 14mm * 11mm * 5mm (length * wide * height), and the population mean diameter of the voice coil loudspeaker voice coil that is wherein adopted is 6mm.Particularly, the voice coil loudspeaker voice coil of this test is with reference to the voice coil loudspeaker voice coil structure shown in Fig. 4.Particularly; The voice coil loudspeaker voice coil of test is formed by a copper cash (as lead, diameter is 0.06 millimeter, and its periphery is coated with the insulating barrier that thickness is 0.01mm) coiling; Have 4 layers altogether; Be respectively: inside conductor layer (it has 15 loop), two central conductor layers (having 6 loop and 7 loop respectively), an outermost conductor layer (having 14 loop altogether); It comprises first's (7 loop; Flush with outermost central conductor layer in two central conductor layers) and second portion (7 loop flush with said inside conductor layer), wherein from the lead of the continuous coiling of the first of said outermost conductor layer peripheral these two central conductor layers that closely surround from said two central conductor layers; Until inside conductor layer, and separately the quantity of loop is all lacked (the quantity ratio is 7: 15 and 1: 2.5) than the quantity of the loop in the inside conductor layer in this central conductor layer; (thickness is the end of T1 to the end that this voice coil loudspeaker voice coil thickness is little; Wherein the thickness at two ends ratio is 1: 2) (model is AD475 with adhesive; Available from moral road industry jointing material company) be bonded to the vibrating diaphragm in the loud speaker; Wherein the total structure of voice coil loudspeaker voice coil 10, vibrating diaphragm 20, magnetic circuit system 30 and shell 40 is as shown in Figure 6, and between vibrating diaphragm 20 and the magnetic circuit system 30 is 0.5mm apart from s1.Then, apply an ac signal, the total harmonic distortion curve is analyzed and drawn to the sound that loud speaker produces with the acoustic analysis appearance to the Microspeaker that adopts voice coil loudspeaker voice coil of the present invention; Wherein, the power of the simple alternating current signal of telecommunication that is applied is 600mw, and frequency is in the scope of 200Hz to 2000Hz, and the frequency sweep time is 3 seconds, and the frequency sweep number of times is 2 times.The chart of being drawn with reference to figure 7; The X axle is represented frequency (unit: Hz); The Y axle is represented total harmonic distortion ratio (THD%); Solid line L10 representes the total harmonic distortion desired control line of this moving-coil type Microspeaker, the actual total harmonic distortion curve when solid line L10 ' is illustrated in the voice coil loudspeaker voice coil 10 that uses in the moving-coil type Microspeaker among Fig. 4; Can find out; Actual harmonic distortion curve is starkly lower than control line about 6.7% on the whole; Especially (promptly in the frequency of about 900Hz to 1100Hz; Near the resonance frequency of vibration component) time, actual harmonic distortion curve ratio control line is low about 5%, this make the sensitivity of loud speaker improve greatly and tonequality better.
Yet,, carried out the total harmonic distortion test under the equal test condition for the Microspeaker that adopts voice coil loudspeaker voice coil of the prior art roughly as shown in Figure 2.The chart of being drawn with reference to figure 3; The X axle is represented frequency (unit: Hz); The Y axle is represented total harmonic distortion ratio (THD%); Solid line L1 among the figure representes the total harmonic distortion desired control line of this moving-coil type Microspeaker, and solid line L1 ' is then for using the actual total harmonic distortion curve of the loud speaker of conventional voice coil loudspeaker voice coil among Fig. 2; Can find out; Actual harmonic distortion curve approaches control line generally very much, especially when near the frequency (that is, the resonance frequency at vibration component) of about 900Hz to 1100Hz; Actual harmonic distortion curve almost surpasses corresponding control line, and this has had a strong impact on the sensitivity and the tonequality of loud speaker.
On the other hand, also voice coil loudspeaker voice coil of the present invention has been carried out reliability testing.In this reliability testing, detect 100 Microspeakers that have the voice coil loudspeaker voice coil that is adopted in the above-mentioned total harmonic distortion test, these loud speakers are applied pink noise signal, and move 500 hours, power is 600 milliwatts; Subsequently, by the technical staff operating state of the voice coil loudspeaker voice coil in these loud speakers is made detection.Find that in these 100 Microspeakers that adopt voice coil loudspeaker voice coils of the present invention, the fault in any work does not appear in voice coil loudspeaker voice coil, bonding firmly and self also do not scatter with vibrating diaphragm, have very high reliability.
Yet; If the lead of the continuous coiling of the first of the outermost conductor layer of above-mentioned voice coil loudspeaker voice coil closely surrounds this central conductor layer from the peripheral of middle conductor layer, and the second portion of outermost conductor layer not have coiling be to flush with inside conductor layer, then when 100 such voice coil loudspeaker voice coils are carried out above-mentioned reliability testing; The technical staff finds; Under equal experiment condition, there are 25 voice coil loudspeaker voice coils the spallation phenomenon to occur, this has had a strong impact on the functional reliability of voice coil loudspeaker voice coil.
On the whole, use voice coil loudspeaker voice coil of the present invention can reduce total harmonic distortion to a great extent, improve the sensitivity and the tonequality of loud speaker, and because structural characteristic, voice coil loudspeaker voice coil of the present invention has very high functional reliability.
Should be understood that the exemplary among above-mentioned Fig. 4 discloses the basic scheme of voice coil loudspeaker voice coil of the present invention.In a kind of concrete embodiment, some conductor layers of " more inboard " within said innermost layer, can also be arranged, and be by same lead coiling; In such scheme, the aforesaid basic scheme of the present invention of the conductor layer of several " more inboard " of coiling, and then continuation coiling in advance.Therefore, these schemes all should be within the scope of the invention.In like manner, some conductor layers in " the more outside " in a kind of concrete embodiment, outside said outermost layer, can also be arranged, and be by same lead coiling; In such scheme, after the intact aforesaid basic scheme of the present invention of coiling, can be close to the conductor layer that the outermost conductor layer continues coiling " the more outside ".The embodiment that should also be understood that above-mentioned two kinds of situation also can make up, and the modification of all these situation all falls within the scope of the invention.
That is to say that voice coil loudspeaker voice coil of the present invention should not be limited to embodiment mentioned above, but can have various modification.For example, referring to Fig. 8 to Figure 11, the various exemplary variation of voice coil loudspeaker voice coil of the present invention are shown respectively.For example; In Fig. 8; This voice coil loudspeaker voice coil has inside conductor layer 101a, four central conductor layer 102a-105a and an outermost conductor layer 106a; Wherein outermost conductor layer 106a comprises 106a ' of first and second portion 106a "; outermost central conductor layer 105a is substantially flush in the 106a ' of first of said outermost conductor layer 106a and four the central conductor layers, from the lead of the continuous coiling of the 106a ' of first of said outermost conductor layer 106a peripheral these four central conductor layers that closely surround from four central conductor layers, until said inside conductor layer 101a; continue the second portion 106a of the said outermost conductor layer of coiling 106a then along said inside conductor layer 101a ", make the second portion 106a of said outermost conductor layer 106a " substantially flush with said inside conductor layer 101a; In Fig. 9, this voice coil loudspeaker voice coil has inside conductor layer 101b, two central conductor layer 102b-103b and two outboard wire layer 104b-105b (being equivalent to an outermost conductor layer and one conductor layer in " the more outside " as stated); In Figure 10, this voice coil loudspeaker voice coil has two inboard wire layer 101c-102c (being equivalent to an innermost layer and one conductor layer of " more inboard " as stated), four central conductor layer 103c-106c and an outermost conductor layer 107c; In Figure 11, this voice coil loudspeaker voice coil has inside conductor layer 101d, four central conductor layer 102d-105d and two outboard wire layer 106d-107d (being equivalent to an outermost conductor layer and one conductor layer in " the more outside " as stated).
Should be understood that those skilled in that art can also easily expect multiple improvement or modification under the disclosed instruction of the present invention of preceding text.Yet, any for improvement of the present invention, modification or modification under the situation that does not depart from connotation of the present invention, all be intended to be included within the appended protection range that claim limited of the present invention.
Claims (10)
1. voice coil loudspeaker voice coil; It is by a lead---preferably being processed by copper, copper alloy, aluminum or aluminum alloy---, and continuous coiling forms; Have a plurality of conductor layers diametrically and each conductor layer on being arranged in axially has a plurality of loop, it is characterized in that this voice coil loudspeaker voice coil is comprising in the radial direction:
Inside conductor layer;
Even number---is preferably two, four or six---, and central conductor layer, the quantity of the loop in each layer of this even number central conductor layer all lack than the quantity of the loop in the said inside conductor layer; And
An outermost conductor layer, it comprises first and second portion; Wherein, Outermost central conductor layer flushes in the first of said outermost conductor layer and the said even number central conductor layer; From the lead of the continuous coiling of the first of said outermost conductor layer peripheral this even number central conductor layer that closely surrounds from said even number central conductor layer; Until said inside conductor layer, continue the second portion of the said outermost conductor layer of coiling then along said inside conductor layer, the second portion that makes said outermost conductor layer flushes with said inside conductor layer.
2. voice coil loudspeaker voice coil according to claim 1 is characterized in that, the thickness of this voice coil loudspeaker voice coil one end is 1: 6 to 1: 2 with the thickness ratio of the other end.
3. voice coil loudspeaker voice coil according to claim 1 is characterized in that, the quantity ratio of the loop in the quantity of the loop in each layer of said even number central conductor layer and the said inside conductor layer is 1: 2 to 1: 4.
4. voice coil loudspeaker voice coil according to claim 1 is characterized in that this voice coil loudspeaker voice coil also comprises the conductor layer that at least one is extra, and it is adjacent to the second portion coiling of said outermost conductor layer, and preferably has 2-4 loop.
5. according to each described voice coil loudspeaker voice coil among the claim 1-4; It is characterized in that it is 0.01 millimeter to 0.05 millimeter insulating barrier that the periphery of said lead is coated with thickness, especially; The diameter of said lead is 0.04 millimeter to 0.12 millimeter, is preferably 0.06 millimeter to 0.10 millimeter.
6. method that forms voice coil loudspeaker voice coil, wherein this voice coil loudspeaker voice coil has a plurality of conductor layers and each conductor layer on being arranged in axially has a plurality of loop diametrically, and this method comprises:
A lead that is used for continuous this voice coil loudspeaker voice coil of coiling is provided, preferably processes by copper, copper alloy, aluminum or aluminum alloy;
Inside conductor layer of coiling;
The coiling even number---is preferably two, four or six---central conductor layer, the quantity of the guide collar in each layer of this even number central conductor layer all lacks than the quantity of the loop in the said inside conductor layer successively;
Outermost conductor layer of coiling, wherein this outermost conductor layer comprises first and second portion, first's coiling of this outermost conductor layer for said even number central conductor layer in outermost central conductor layer flush;
Make from the lead of the continuous coiling of the first of said outermost conductor layer peripheral this even number central conductor layer that closely surrounds, until said inside conductor layer from said even number central conductor layer;
Continue the second portion of the said outermost conductor layer of coiling along said inside conductor layer, make the second portion coiling of said outermost conductor layer for flushing with said inside conductor layer.
7. method according to claim 6 is characterized in that, the thickness of this voice coil loudspeaker voice coil one end is 1: 6 to 1: 2 with the thickness ratio of the other end.
8. method according to claim 6 is characterized in that, the quantity ratio of the loop in the quantity of the loop in each layer of said even number central conductor layer and the said inside conductor layer is 1: 2 to 1: 4.
9. method according to claim 6 is characterized in that, also comprises at least one the extra conductor layer of second portion coiling that is adjacent to said outermost conductor layer, and preferably, the quantity of the loop in this at least one extra conductor layer is 2-4.
10. according to each described voice coil loudspeaker voice coil among the claim 6-9; It is characterized in that it is 0.01 millimeter to 0.05 millimeter insulating barrier that the periphery of said lead is coated with thickness, especially; The diameter of said lead is 0.04 millimeter to 0.12 millimeter, is preferably 0.06 millimeter to 0.10 millimeter.
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| CN (1) | CN102523545A (en) |
Cited By (8)
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| WO2016091066A1 (en) * | 2014-12-08 | 2016-06-16 | Knowles Ipc (M) Sdn. Bhd. | Voice coil and speaker |
| CN105872914A (en) * | 2016-03-31 | 2016-08-17 | 歌尔声学股份有限公司 | Voice coil and micro-loudspeaker with voice coil |
| CN105933833A (en) * | 2016-05-25 | 2016-09-07 | 深圳精拓创新科技有限公司 | Voice coil, manufacturing method thereof and loudspeaker |
| CN107484086A (en) * | 2017-07-28 | 2017-12-15 | 歌尔股份有限公司 | Voice coil loudspeaker voice coil winding method and voice coil loudspeaker voice coil and the acoustical generator provided with the voice coil loudspeaker voice coil |
| CN108566596A (en) * | 2018-04-18 | 2018-09-21 | 歌尔股份有限公司 | Voice coil winding method and voice coil, the acoustical generator equipped with the voice coil |
| CN108769878A (en) * | 2018-06-13 | 2018-11-06 | 歌尔股份有限公司 | Voice coil, vibration component and acoustical generator |
| CN109362008A (en) * | 2018-10-23 | 2019-02-19 | 歌尔股份有限公司 | A kind of loudspeaker |
| CN112055289A (en) * | 2020-06-29 | 2020-12-08 | 歌尔股份有限公司 | Voice coil and sound generating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105744445B (en) * | 2014-12-08 | 2019-07-12 | 奥音科技（北京）有限公司 | Coil and loudspeaker |
| CN105744445A (en) * | 2014-12-08 | 2016-07-06 | 楼氏电子（北京）有限公司 | Coil and loudspeaker |
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| CN105872914A (en) * | 2016-03-31 | 2016-08-17 | 歌尔声学股份有限公司 | Voice coil and micro-loudspeaker with voice coil |
| WO2017166375A1 (en) * | 2016-03-31 | 2017-10-05 | 歌尔声学股份有限公司 | Voice coil and miniature loudspeaker provided with voice coil |
| CN105933833A (en) * | 2016-05-25 | 2016-09-07 | 深圳精拓创新科技有限公司 | Voice coil, manufacturing method thereof and loudspeaker |
| CN107484086A (en) * | 2017-07-28 | 2017-12-15 | 歌尔股份有限公司 | Voice coil loudspeaker voice coil winding method and voice coil loudspeaker voice coil and the acoustical generator provided with the voice coil loudspeaker voice coil |
| CN107484086B (en) * | 2017-07-28 | 2019-08-27 | 歌尔股份有限公司 | Voice coil winding method and voice coil and acoustical generator equipped with the voice coil |
| CN108566596A (en) * | 2018-04-18 | 2018-09-21 | 歌尔股份有限公司 | Voice coil winding method and voice coil, the acoustical generator equipped with the voice coil |
| CN108769878A (en) * | 2018-06-13 | 2018-11-06 | 歌尔股份有限公司 | Voice coil, vibration component and acoustical generator |
| CN109362008A (en) * | 2018-10-23 | 2019-02-19 | 歌尔股份有限公司 | A kind of loudspeaker |
| CN112055289A (en) * | 2020-06-29 | 2020-12-08 | 歌尔股份有限公司 | Voice coil and sound generating device |
| CN112055289B (en) * | 2020-06-29 | 2022-05-17 | 歌尔股份有限公司 | Voice coil and sound generating device |
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Application publication date: 20120627 |