CN104053095B - Voice coil - Google Patents
Voice coil Download PDFInfo
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- CN104053095B CN104053095B CN201410255690.5A CN201410255690A CN104053095B CN 104053095 B CN104053095 B CN 104053095B CN 201410255690 A CN201410255690 A CN 201410255690A CN 104053095 B CN104053095 B CN 104053095B
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- metallic framework
- layer glue
- voice coil
- coiling group
- gap
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Abstract
The invention belongs to loud speaker field, more particularly to a kind of voice coil of good heat dissipation effect.Voice coil, including metallic framework, metallic framework is cylindrical in shape, the surface of the metallic framework is provided with axial gap, and the surface of metallic framework is impregnated with first layer glue, and the top on metallic framework surface is wound with the reinforcement paper for keeping metallic framework shape, the lower edge of the reinforcement paper is provided with bevel edge portion, the lower part of the metallic framework is wound with coiling group, and the surface of coiling group is impregnated with second layer glue, and the temperature tolerance of the second layer glue is higher than first layer glue.The present invention is different with the temperature tolerance of second layer glue using first layer glue, realize the separation between coiling group and metallic framework, the structure of reinforcement paper is improved simultaneously, limit by reinforcement paper to coiling group, to make coiling group shift, coiling group cheaply squeezes metallic framework, and metallic framework is extruded rear internal diameter and becomes smaller, metallic framework is contacted with T iron, quickly disperses heat.
Description
Technical field
The invention belongs to loud speaker field, more particularly to a kind of voice coil of good heat dissipation effect.
Background technology
In general, in speaker operation, high-frequency current generates magnetic field by voice coil coil, to drive diffuser
Vibrations, since electric current generates magnetic field by voice coil coil, the fever of voice coil coil can not avoid, the high temperature that excessively high power band comes
A series of failures (broken string, tone-off etc.) for easily causing loud speaker, can also influence the service life of loud speaker, therefore coil heating is to lead
The main reason for causing power of loudspeaker that can not slowly be promoted, high temperature causes loud speaker that need to design the structure space of bigger, avoids dissipating
Heat is excessively slow, and the whole height of loud speaker is caused to be limited.
And when loud speaker is on automobile, to loud speaker, more stringent requirements are proposed, when automobile breaks down, raises
Sound device in the energized state, cannot generate bright cigarette in a period of time, this just proposes requirement, voice coil to the fire resistance of loud speaker
As direct conductive devices in loud speaker, i.e., requirement also is proposed to the fire resistance of voice coil.
Existing developer is generally by improving the fire resistance of voice coil various components to realize entire voice coil
The raising of fire resistance, but since there are one the limit for the fire resistance of each component, when automobile something unexpected happened,
Automobile power source short circuit, cause it is excessive by the electric current of loud speaker, voice coil generate heat can not disperse in time, temperature drastically on
Rise, the temperature of voice coil be easy for be more than all parts fire endurance, still will produce bright cigarette, exist cause fire danger
Danger, does not meet the requirement of relevant laws and regulations.
Invention content
The present invention in view of the deficiencies of the prior art, devises a kind of voice coil of good heat dissipation effect.
The invention is realized by the following technical scheme：
Voice coil, including metallic framework, it is characterised in that：Metallic framework is cylindrical in shape, the surface setting of the metallic framework
There are axial gap, the surface of metallic framework to be impregnated with first layer glue, the top on metallic framework surface is wound with for keeping
The lower edge of the reinforcement paper of metallic framework shape, the reinforcement paper is provided with bevel edge portion, and the lower part of the metallic framework is wound with
The surface of coiling group, coiling group is impregnated with second layer glue, and the temperature tolerance of the second layer glue is higher than first layer glue.
The present invention is special by the heatproof of the second layer glue on the surface to first layer glue and coiling group on metallic framework
Property utilization, the temperature that can bear of the first layer glue on metallic framework surface is less than the second layer glue of coiling group surface dipping
Water, when voice coil temperature is increased to the fusing point of first layer glue, first layer glue starts to soften, and realizes coiling group and metal bone
The separation of frame can occur opposite displacement, position occurs since coiling group is also in energized state between coiling group and metallic framework
After shifting, the lower contacts of coiling group and the reinforcement paper on metallic framework, since the following face of reinforcement paper is bevel edge portion, at this point, around
The EDGE CONTACT of the side and reinforcement paper of line group, the other side under the action of a magnetic force, can move further up, coiling group
It deforms upon and metallic framework is squeezed, the end in the gap of metallic framework is made to gather, simultaneously because voice coil temperature is higher,
There is the phenomenon that expanding with heat and contract with cold in metallic framework, the both ends in metallic framework gap can move toward one another, in the crimp of coiling group and heat
Under the action of swollen shrinkage, the end of metallic framework is gathered until the end of metallic framework overlaps, due to metallic framework
End overlapping after, the internal diameter of metallic framework becomes smaller, and the inner wall of metallic framework encounters the T iron of loud speaker, and T iron is metal material tool
There are preferable heat conductivility, T iron that can rapidly disperse the heat on voice coil, the temperature of voice coil is advantageously reduced, to prevent
Loud speaker generates bright cigarette, avoids safety problem caused by the voice coil overheat of loud speaker.
Further, the spacing between the coiling group and reinforcement paper is 0-1mm, in for coiling group and benefit
The distance between intensity values are defined, and prevent spacing is excessive from causing coiling group that can not touch reinforcement paper, ensure that coiling group can
It shifts, then ensure that metallic framework can receive the extruding force of coiling group.
Further, 2-3 times of magnetic gap of the width in the gap between voice coil and T iron, using above-mentioned width
The gap of degree, after metallic framework receives extruding force and the expanded by heating of coiling group, when gap on the one hand can be prevented too small, metal
The end of skeleton is piled up, and can not be gathered, and the internal diameter variation of metallic framework is too small, and metallic framework can not touch in T iron,
Heat can not quickly be dispersed from T iron, and when gap on the other hand can be prevented excessive, the shrinkage of metallic framework is limited, be shunk
Metallic framework afterwards can not still be contacted with T iron, in conclusion the width in gap be 2-3 times of magnetic gap can effective guarantee fund
It can be contacted with T iron after belonging to framework shrinkage, ensure the heat dissipation effect of voice coil.
Further, the metallic framework is made of aluminium or almag, aluminium and almag have compared with
Good plasticity, facilitates metallic framework to be processed, while aluminium and almag have preferable thermal conductivity, can be rapidly by heat
It is transmitted in T iron, T iron is metal material, and heat exchanger effectiveness is high, can rapidly disperse heat.
Further, the first layer glue is polyester-imide paint, and second layer glue is polyamide-imide paint.
Further, the first layer glue is Polyester Paint, and second layer glue is polyester-imide paint.
The combination of above two first layer glue and second layer glue, if in the technical program first layer glue heatproof
Less than the heatproof of second layer glue, the resistance to temperature of above-mentioned polyester-imide paint is 180 DEG C, and the resistance to temperature of polyamide-imide paint is
200 DEG C, the resistance to temperature of Polyester Paint is 155 DEG C；First layer glue and the resistance to temperature difference of second layer glue are realized in high temperature shape
Convenient for being around between metallic framework at high temperature relative displacement occurs for the separation under state between coiling group and metallic framework.
In conclusion the present invention has advantageous effect：
1, present invention utilizes the heatproof of the second layer glue on the first layer glue and coiling group on metallic framework surface spies
Property difference, realization be detached between metallic framework and coiling group at high temperature, occur on metallic framework relatively convenient for coiling group
Displacement, meanwhile, the bevel edge design that reinforcement paper is used close to coiling group side, the side of coiling group receives the blocking of reinforcement paper, separately
Side can also continue to move up, coiling group run-off the straight, and the inclination of coiling group squeezes metallic framework, after being extruded,
The end in metallic framework gap is gathered and overlaps, while the principle expanded with heat and contract with cold using metallic framework, and metallic framework is heated
After expansion, coiling group also can be such that the slot ends of metallic framework gather the reaction force of metallic framework, the gap of metallic framework
After the gathering of end, the internal diameter of metallic framework reduces, and metallic framework is contacted with the T iron of loud speaker, since T iron is higher volume of
Metal material, the effectively excessive diffusion area of voice coil heat, realizes the quick diffusion of voice coil heat, it is therefore prevented that voice coil temperature
Excessively high existing security risk, while the requirement of loud speaker relevant laws and regulations is also met, there are preferable market prospects.
2, the present invention is further defined the width in the gap on metallic framework surface, using the seam of above-mentioned width
Gap, after metallic framework expanded by heating, metallic framework receives the resistance of coiling group, when gap on the one hand can be prevented too small, metal
The end of skeleton is piled up, and can not be gathered, i.e., metallic framework can not touch in T iron, and heat can not be quickly from T iron
It disperses, when gap on the other hand can be prevented excessive, the shrinkage of metallic framework is limited, and the metallic framework after contraction still can not be with T
Iron contacts, in conclusion the width in gap be 2-3 times of magnetic gap can effectively ensure metal framework shrinkage after can be connect with T iron
It touches, ensures the heat dissipation effect of voice coil.
3, the present invention is quickly dispersed the temperature of voice coil by T iron, ensure that various components are not achieved in the temperature of voice coil
Ignition point avoids the generation of the fire behavior as caused by loud speaker, plays the role of protecting vehicle safety, while ensure that voice coil
Temperature be less than ignition point, namely ensure that voice coil is smokeless in the high temperature environment, meet the regulation that automobile correlation smokelessly requires.
Description of the drawings
Through the following detailed description taken in conjunction with the accompanying drawings, present invention objects, features and advantages above-mentioned and other will become
Obviously.Wherein：
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the schematic diagram in gap and magnetic gap；
1 is gap in figure, and 2 be metallic framework, and 3 be first layer glue, and 4 be coiling group, and 5 be reinforcement paper, and 6 be bevel edge portion.
Specific implementation mode
The present invention will be further described below in conjunction with the accompanying drawings.
Voice coil as shown in Figure 1, including metallic framework 2, it is characterised in that：Metallic framework 2 is cylindrical in shape, and metallic framework 2 is adopted
It is batched with the material of plank shape, the surface of the metallic framework 2 is provided with axial gap 1, and gap has plank to fill material
The end of material does not combine to be formed, and the surface of metallic framework 2 is impregnated with first layer glue 3, and the top on 2 surface of metallic framework is wound with
Reinforcement paper 5 for keeping metallic framework shape, the reinforcement paper are Nomex paper, and the lower edge of the reinforcement paper 5 is provided with
The lower part in bevel edge portion 6, the metallic framework 2 is wound with coiling group 4, and the surface of coiling group 4 is impregnated with second layer glue, described
The temperature tolerance of second layer glue is higher than first layer glue 3.
The present invention is special by the heatproof of the second layer glue on the surface to first layer glue and coiling group on metallic framework
Property utilization, the temperature that can bear of the first layer glue on metallic framework surface is less than the second layer glue of coiling group surface dipping
Water, when voice coil temperature is increased to the fusing point of first layer glue, first layer glue starts to soften, and realizes coiling group and metal bone
The separation of frame can occur opposite displacement, position occurs since coiling group is also in energized state between coiling group and metallic framework
After shifting, the lower contacts of coiling group and the reinforcement paper on metallic framework, since the following face of reinforcement paper is bevel edge portion, at this point, around
The EDGE CONTACT of the side and reinforcement paper of line group, the other side under the action of a magnetic force, can move further up, coiling group
It deforms upon and metallic framework is squeezed, the end in the gap of metallic framework is made to gather, simultaneously because voice coil temperature is higher,
There is the phenomenon that expanding with heat and contract with cold in metallic framework, the both ends in metallic framework gap can move toward one another, in the crimp of coiling group and heat
Under the action of swollen shrinkage, the end of metallic framework is gathered until the end of metallic framework overlaps, due to metallic framework
End overlapping after, the internal diameter of metallic framework becomes smaller, and the inner wall of metallic framework encounters the T iron of loud speaker, and T iron is metal material tool
There are preferable heat conductivility, T iron that can rapidly disperse the heat on voice coil, the temperature of voice coil is advantageously reduced, to prevent
Loud speaker generates bright cigarette, avoids safety problem caused by the voice coil overheat of loud speaker.
Further, the spacing between the coiling group and reinforcement paper is 0-1mm, in for coiling group and benefit
The distance between intensity values are defined, and prevent spacing is excessive from causing coiling group that can not touch reinforcement paper, ensure that coiling group can
It shifts, then ensure that metallic framework can receive the extruding force of coiling group.
Further, 2-3 times of magnetic gap of the width in the gap 1 between voice coil and T iron, the width in gap
As shown in the A labels in Fig. 2, magnetic gap is as shown in the B labels in Fig. 2, using the gap 1 of above-mentioned width, metallic framework by
After thermal expansion, when gap on the one hand can be prevented too small, the end of metallic framework is piled up, and can not be gathered, i.e. metallic framework
It can not touch in T iron, heat can not quickly be dispersed from T iron, when gap on the other hand can be prevented excessive, metallic framework
Shrinkage is limited, and the metallic framework after contraction can not still be contacted with T iron, in conclusion the width in gap is 2-3 times of magnetic gap
It can be contacted with T iron after capable of effectively ensureing metal framework shrinkage, ensure the heat dissipation effect of voice coil.
Further, the metallic framework 2 is made of aluminium or almag, aluminium and almag have compared with
Good plasticity, facilitates metallic framework to be processed, while aluminium and almag have preferable thermal conductivity, can be rapidly by heat
It is transmitted in T iron, T iron is metal material, and heat exchanger effectiveness is high, can rapidly disperse heat.
Further, the first layer glue 3 is polyester-imide paint, and second layer glue is polyamide-imide paint.
Further, the first layer glue is Polyester Paint, and second layer glue is polyester-imide paint.
The combination of above two first layer glue and second layer glue, if in the technical program first layer glue heatproof
Less than the heatproof of second layer glue, the resistance to temperature of above-mentioned polyester-imide paint is 180 DEG C, and the resistance to temperature of polyamide-imide paint is
200 DEG C, the resistance to temperature of Polyester Paint is 155 DEG C；First layer glue and the resistance to temperature difference of second layer glue are realized in high temperature shape
Convenient for being around between metallic framework at high temperature relative displacement occurs for the separation under state between coiling group and metallic framework.
In conclusion the present invention has advantageous effect：
1, present invention utilizes the heatproof of the second layer glue on the first layer glue and coiling group on metallic framework surface spies
Property difference, realization be detached between metallic framework and coiling group at high temperature, occur on metallic framework relatively convenient for coiling group
Displacement, meanwhile, the bevel edge design that reinforcement paper is used close to coiling group side, the side of coiling group receives the blocking of reinforcement paper, separately
Side can also continue to move up, coiling group run-off the straight, and the inclination of coiling group squeezes metallic framework, after being extruded,
The end in metallic framework gap is gathered and overlaps, while the principle expanded with heat and contract with cold using metallic framework, and metallic framework is heated
After expansion, coiling group also can be such that the slot ends of metallic framework gather the reaction force of metallic framework, the gap of metallic framework
After the gathering of end, the internal diameter of metallic framework reduces, and metallic framework is contacted with the T iron of loud speaker, since T iron is higher volume of
Metal material, the effectively excessive diffusion area of voice coil heat, realizes the quick diffusion of voice coil heat, it is therefore prevented that voice coil temperature
Excessively high existing security risk, while the requirement of loud speaker relevant laws and regulations is also met, there are preferable market prospects.
2, the present invention is further defined the width in the gap on metallic framework surface, using the seam of above-mentioned width
Gap, after metallic framework expanded by heating, metallic framework receives the resistance of coiling group, when gap on the one hand can be prevented too small, metal
The end of skeleton is piled up, and can not be gathered, i.e., metallic framework can not touch in T iron, and heat can not be quickly from T iron
It disperses, when gap on the other hand can be prevented excessive, the shrinkage of metallic framework is limited, and the metallic framework after contraction still can not be with T
Iron contacts, in conclusion the width in gap be 2-3 times of magnetic gap can effectively ensure metal framework shrinkage after can be connect with T iron
It touches, ensures the heat dissipation effect of voice coil.
3, the present invention is quickly dispersed the temperature of voice coil by T iron, ensure that various components are not achieved in the temperature of voice coil
Ignition point avoids the generation of the fire behavior as caused by loud speaker, plays the role of protecting vehicle safety, while ensure that voice coil
Temperature be less than ignition point, namely ensure that voice coil is smokeless in the high temperature environment, meet the regulation that automobile correlation smokelessly requires.
The present invention is not limited to the described embodiments, and those skilled in the art is i.e. public in the spirit for not departing from the present invention
Open in range, still may make some modifications or changes, thus the scope of the present invention with claims limited ranging from
It is accurate.
Claims (6)
1. voice coil, including metallic framework, it is characterised in that：Metallic framework is cylindrical in shape, and the surface of the metallic framework is provided with
The surface in axial gap, metallic framework is impregnated with first layer glue, and the top on metallic framework surface is wound with for keeping gold
Belong to the reinforcement paper of frame configuration, the lower edge of the reinforcement paper is provided with bevel edge portion, the lower part of the metallic framework be wound with around
The surface of line group, coiling group is impregnated with second layer glue, and the temperature tolerance of the second layer glue is higher than first layer glue.
2. voice coil according to claim 1, it is characterised in that：Spacing between the coiling group and reinforcement paper is 0.5-
1mm。
3. voice coil according to claim 1, it is characterised in that：Between the width in the gap is between voice coil and T iron
2-3 times of gap.
4. voice coil according to claim 1, it is characterised in that：The metallic framework uses aluminium or almag system
At.
5. voice coil according to claim 1, it is characterised in that：The first layer glue is polyester-imide paint, the second layer
Glue is polyamide-imide paint.
6. voice coil according to claim 1, it is characterised in that：The first layer glue is Polyester Paint, second layer glue
For polyester-imide paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410255690.5A CN104053095B (en) | 2014-06-10 | 2014-06-10 | Voice coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410255690.5A CN104053095B (en) | 2014-06-10 | 2014-06-10 | Voice coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104053095A CN104053095A (en) | 2014-09-17 |
| CN104053095B true CN104053095B (en) | 2018-08-17 |
Family
ID=51505374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410255690.5A Active CN104053095B (en) | 2014-06-10 | 2014-06-10 | Voice coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104053095B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109362008B (en) * | 2018-10-23 | 2021-05-18 | 歌尔股份有限公司 | Loudspeaker |
| CN111083613A (en) * | 2019-12-30 | 2020-04-28 | 歌尔科技有限公司 | Voice coil for sound generating device and sound generating device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201352850Y (en) * | 2008-12-19 | 2009-11-25 | 尼开电机(上海)有限公司 | Practical loudspeaker voice coil |
| CN203504742U (en) * | 2013-08-23 | 2014-03-26 | 惠州富盛绝缘材料有限公司 | Reinforcing paper tube of voice coil |
| CN203984664U (en) * | 2014-06-10 | 2014-12-03 | 常州声泰龙电子音响有限公司 | Voice coil loudspeaker voice coil |
-
2014
- 2014-06-10 CN CN201410255690.5A patent/CN104053095B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201352850Y (en) * | 2008-12-19 | 2009-11-25 | 尼开电机(上海)有限公司 | Practical loudspeaker voice coil |
| CN203504742U (en) * | 2013-08-23 | 2014-03-26 | 惠州富盛绝缘材料有限公司 | Reinforcing paper tube of voice coil |
| CN203984664U (en) * | 2014-06-10 | 2014-12-03 | 常州声泰龙电子音响有限公司 | Voice coil loudspeaker voice coil |
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| Publication number | Publication date |
|---|---|
| CN104053095A (en) | 2014-09-17 |
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