CN210075575U - Loudspeaker structure adopting symmetrical short circuit ring design - Google Patents
Loudspeaker structure adopting symmetrical short circuit ring design Download PDFInfo
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- CN210075575U CN210075575U CN201921440016.9U CN201921440016U CN210075575U CN 210075575 U CN210075575 U CN 210075575U CN 201921440016 U CN201921440016 U CN 201921440016U CN 210075575 U CN210075575 U CN 210075575U
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Abstract
The utility model discloses an adopt speaker structure of symmetry short circuit ring design, including U iron/T iron, magnet, china department, voice coil loudspeaker voice coil and short circuit ring, U iron/T iron, magnet and china department constitute a magnetic circuit clearance, and voice coil loudspeaker voice coil and short circuit ring set up in this magnetic circuit clearance, and the short circuit ring hugs closely on the inside/outside surface of U iron/T iron, and the voice coil loudspeaker voice coil sets up in the clearance between short circuit ring and magnet and china department; the short circuit ring forms an up-down symmetrical structure by taking the center of the magnetic gap as an axis and covers the up-down stroke range of the voice coil. The utility model discloses an adopt the design of symmetry short circuit ring to cover the voice coil loudspeaker voice coil stroke or cover the required linear range of actual design, make voice coil loudspeaker voice coil inductance and impedance nonlinear variation reduce by a wide margin in required stroke range, thereby improve the performance of speaker. In addition, after the design of the symmetrical short circuit ring, a certain height of T iron or U iron is correspondingly increased, so that the heat dissipation area of the magnetic circuit system is indirectly increased, and a certain heat dissipation effect is achieved.
Description
Technical Field
The utility model relates to a speaker technical field especially relates to a through optimizing magnetic circuit in order to improve acoustic performance's speaker structure.
Background
The existing loudspeaker magnetic circuit system with the design of the short circuit ring is divided into an external magnetic circuit system (based on T iron) and an internal magnetic circuit system (based on U iron), and the structure of the loudspeaker magnetic circuit system generally comprises T iron (or U iron), a magnet, a washer, the short circuit ring, a voice coil and the like, wherein the short circuit ring is arranged between the top of a central column of the T iron and the outer side or between the top of the washer and the outer side, or between the inner side of the U iron and the washer. The working principle is as follows: the T iron or the U iron, the magnet and the washer form a magnetic circuit gap to provide a constant magnetic field for the voice coil, and the energized voice coil can move up and down in the magnetic circuit gap, so that a vibration system of the loudspeaker is pushed to move to generate sound. However, the voice coil fed with an alternating current also generates an alternating magnetic field, which affects the stability of the original constant magnetic field, and such nonlinear variation causes large distortion of the speaker and large hysteresis loss in the magnet, thereby causing the magnet to generate heat and reducing the performance of the speaker. In order to eliminate the adverse effects, a short-circuit ring with high conductivity is arranged on the top of the T-iron center post or the top of the washer (or the inner side of the U-iron), so that the eddy current in the short-circuit ring is greatly increased when the voice coil works, an alternating magnetic field opposite to the alternating magnetic field generated by the voice coil is generated, the two alternating magnetic fields are sufficiently counteracted with each other, the magnetic field in the magnetic gap is close to be constant, and the performance of the loudspeaker is improved.
However, in the existing short circuit ring design, the height is generally equal to the thickness of the washer or slightly offset below the washer, and the top of the short circuit ring is lower than the voice coil (the voice coil is higher than the washer). Since the short circuit ring is not designed to cover the stroke of the voice coil and is usually in an asymmetrical structure, the actual effect of the short circuit ring is still changed according to the moving position of the voice coil. As shown in fig. 6 (in the U-iron state) and fig. 7 (in the T-iron state) which are induced impedance curves produced by the voice coil at different positions along with the frequency change, it can be seen that, according to the conventional short-circuit ring design, the inductance and the impedance of the voice coil at different positions still have a significant nonlinearity.
SUMMERY OF THE UTILITY MODEL
The utility model discloses shortcoming to prior art exists provides a structural design is more reasonable, can make the nonlinear change of voice coil loudspeaker voice coil impedance reduce by a wide margin in its stroke range to improve the speaker structure of the design of the adoption symmetry short circuit ring of speaker performance.
In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides an adopt speaker structure of symmetry short circuit ring design, including U iron, magnet, china department, voice coil loudspeaker voice coil and short circuit ring, magnet assembly is in U iron, and china department assembles on magnet, and wherein a magnetic circuit clearance is constituteed with china department to U iron, magnet, provides a invariable magnetic field for the voice coil loudspeaker voice coil, and voice coil loudspeaker voice coil and short circuit ring set up in the magnetic circuit clearance between the lateral wall internal surface of U iron and magnet and china department, its characterized in that: the short circuit ring is tightly attached to the inner surface of the side wall of the U-shaped iron, and the voice coil is arranged in a gap between the short circuit ring and the magnet and between the short circuit ring and the washer; the short circuit ring forms an up-down symmetrical structure by taking the center of the magnetic gap as an axis and covers the up-down stroke range of the voice coil.
Preferably, the short circuit ring is made of a copper material or an aluminum material, and the short circuit ring is tightly adhered and fixed with the inner surface of the side wall of the U-shaped iron through glue.
Further, the top of the side wall of the U-shaped iron is higher than the top ends of the washer and the voice coil (obviously higher than, rather than slightly higher than or basically higher than the washer as in the prior art, but slightly lower than the voice coil), that is, the height of the U-shaped iron is increased, the upper part of the short circuit ring is bent to the top of the side wall of the U-shaped iron to form a bent part, and the bent part and the top of the side wall are fixedly bonded through glue; the lower part of the short circuit ring extends to the position close to the bottom of the U-shaped iron, and the bottom of the short circuit ring is slightly higher than the bottom of the magnet.
The utility model provides an adopt speaker structure of symmetry short circuit ring design, including T iron, magnet, china department, voice coil loudspeaker voice coil and short circuit ring, magnet assembly is on T iron, and china department assembles on magnet, and wherein a magnetic circuit clearance is constituteed to T iron, magnet and china department, provides a invariable magnetic field for the voice coil loudspeaker voice coil, and voice coil loudspeaker voice coil and short circuit ring set up in the magnetic circuit clearance between the lateral wall surface of T iron and magnet and china department, its characterized in that: the short circuit ring is tightly attached to the outer surface of the side wall of the T iron, and the voice coil is arranged in a gap between the short circuit ring and the magnet and between the short circuit ring and the washer; the short circuit ring forms an up-down symmetrical structure by taking the center of the magnetic gap as an axis and covers the up-down stroke range of the voice coil.
Preferably, the short circuit ring is made of a copper material or an aluminum material, and the short circuit ring is adhered and fixed to the outer surface of the side wall of the T iron through glue.
Further, the top of the center pillar of the T-iron is higher (obviously higher than, not slightly higher than the washer as in the prior art, but slightly lower than the voice coil) than the top ends of the washer and the voice coil, that is, the height of the center pillar of the T-iron is increased, the upper part of the short circuit ring is bent to the top of the center pillar of the T-iron to form a bent part, and the bent part and the top of the center pillar of the T-iron are fixedly bonded through glue; the lower part of the short circuit ring extends to the position close to the bottom of the external slot of the T iron, and the bottom of the short circuit ring is slightly higher than the bottom of the magnet (the bottoms of the short circuit ring and the magnet are basically close to each other).
The magnet provides a magnetic field required by design, the T iron or the U iron and the washer play a role in magnetic conduction, the voice coil moves in the magnetic field to push the vibration system to generate sound, an alternating magnetic field is generated simultaneously, the short circuit ring plays a role in a Faraday ring, and the alternating magnetic field generated when the voice coil works is offset.
The utility model discloses an adopt the design of symmetry short circuit ring to cover the voice coil loudspeaker voice coil stroke or cover the required linear range of actual design, make voice coil loudspeaker voice coil inductance and impedance nonlinear variation reduce by a wide margin in required stroke range, thereby improve the performance of speaker. In addition, after the design of the symmetrical short circuit ring is adopted, a certain height of T iron or U iron is correspondingly increased, so that the heat dissipation area of the magnetic circuit system is indirectly increased, the temperature rise of the loudspeaker cannot be greatly increased due to the use of the short circuit ring, and a certain heat dissipation effect is achieved.
Drawings
FIG. 1 is a schematic view of the U-shaped iron of the present invention;
FIG. 2 is a graph of induced impedance of a magnetic circuit system designed with a symmetrical short circuit ring in the U-iron state;
FIG. 3 is a schematic structural view of the T-iron of the present invention;
FIG. 4 is a graph of induced impedance of a magnetic circuit system designed with a symmetrical short ring in the T-iron state;
FIG. 5 is a graph comparing temperature rise curves of the iron core of the present invention;
FIG. 6 is a graph of the induced impedance of the magnetic circuit system in the U-iron state of the prior art;
fig. 7 is a graph of the induced impedance of the magnetic circuit system in the T-iron state of the prior art.
In the figure, 1 is a U-iron, 11 is a top of a side wall, 2 is a T-iron, 21 is a top of a center pillar, 3 is a magnet, 4 is a washer, 5 is a voice coil, 6 is a short circuit ring, and 61 is a bending part.
Detailed Description
As a scheme, namely a U-iron scheme, referring to fig. 1, the speaker structure adopting a symmetrical short circuit ring design includes a U-iron 1, a magnet 3, a washer 4, a voice coil 5 and a short circuit ring 6, wherein the magnet 3 is assembled in the U-iron 1, the washer 4 is assembled on the magnet 3, the U-iron 1, the magnet 3 and the washer 4 form a magnetic circuit gap to provide a constant magnetic field for the voice coil 5, and the voice coil 5 and the short circuit ring 6 are arranged in the magnetic circuit gap between the inner surface of the side wall of the U-iron 1 and the magnets 3 and the washer 4; the short circuit ring 6 is tightly attached to the inner surface of the side wall of the U-shaped iron 1, and the voice coil 5 is arranged in a gap between the short circuit ring 6 and the magnet 3 and the washer 5; the short ring 6 is formed in a vertically symmetrical structure with the center of the magnetic gap (substantially opposite to the center line of the washer 4) as an axis, and covers the vertical stroke range of the voice coil 5.
The short circuit ring 6 is made of an aluminum material (or a copper material), and the short circuit ring 6 is tightly adhered and fixed with the inner surface of the side wall of the U-shaped iron 1 through glue (AB glue).
The top 11 of the side wall of the U-shaped iron 1 is higher than the top of the washer 4 and the voice coil 5 (obviously higher than, rather than slightly higher than or substantially higher than the washer as in the prior art, but slightly lower than the voice coil), that is, the height of the U-shaped iron 1 is increased, so that the heat dissipation area can be increased, and the heat dissipation effect can be improved, as shown in fig. 5. The upper part of the short circuit ring 6 is bent to the top part 11 of the side wall of the U-shaped iron 1 to form a bent part 61, and the bent part 61 is fixedly bonded with the top part 11 of the side wall through glue; the lower part of the short circuit ring 6 extends to the position close to the bottom of the U-shaped iron 1, and the bottom of the short circuit ring 6 is slightly higher than the bottom of the magnet 3. The non-linearity of the induced impedance of the voice coil 5 with the position change of the voice coil 5 is greatly reduced under this structure, as shown in fig. 2.
As a scheme, namely a T-iron scheme, referring to fig. 3, the speaker structure adopting the symmetrical short circuit ring design includes a T-iron 2, a magnet 3, a washer 4, a voice coil 5 and a short circuit ring 6, wherein the magnet 3 is assembled on the T-iron 2, the washer 4 is assembled on the magnet 3, the T-iron 2, the magnet 3 and the washer 4 form a magnetic circuit gap to provide a constant magnetic field for the voice coil 5, and the voice coil 5 and the short circuit ring 6 are arranged in the magnetic circuit gap between the outer surface of the side wall of the T-iron 2 and the magnets 3 and the washer 4; the short circuit ring 6 is tightly attached to the outer surface of the side wall of the T iron 2, and the voice coil 5 is arranged in a gap between the short circuit ring 6 and the magnet 3 and the washer 4; the short ring 6 is formed in an up-down symmetrical structure with the center of the magnetic gap as an axis, and covers the up-down stroke range of the voice coil 5.
The short circuit ring 6 is made of copper (or aluminum) materials, and the short circuit ring 6 is tightly adhered and fixed with the outer surface of the side wall of the T iron 2 through glue.
The top 21 of the center pillar of the T-iron 2 is higher (obviously higher than, not slightly higher than the washer as in the prior art, but slightly lower than the voice coil) than the top ends of the washer 4 and the voice coil 5, i.e. the height of the center pillar of the T-iron 2 is increased, and at the same time, the heat dissipation area can be increased, and the heat dissipation effect can be improved, as shown in fig. 5. The upper part of the short circuit ring 6 is bent to the top part 21 of the center pillar of the T iron 2 to form a bent part 61, and the bent part 61 is fixedly bonded with the top part 21 of the center pillar of the T iron 2 through glue; the lower part of the short circuit ring 6 extends to a position close to the bottom of the external slot of the T-bar 2, and the bottom of the short circuit ring 6 is slightly higher than the bottom of the magnet 3 (the bottoms of the two are basically close to each other). The non-linearity of the induced impedance of the voice coil 5 with the position change of the voice coil 5 is greatly reduced under this structure, as shown in fig. 4.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, i.e. the present invention is intended to cover all equivalent variations and modifications within the scope of the present invention.
Claims (6)
1. The utility model provides an adopt speaker structure of symmetry short circuit ring design, including U iron, magnet, china department, voice coil loudspeaker voice coil and short circuit ring, magnet assembly is in U iron, and china department assembles on magnet, and wherein a magnetic circuit clearance is constituteed with china department to U iron, magnet, provides a invariable magnetic field for the voice coil loudspeaker voice coil, and voice coil loudspeaker voice coil and short circuit ring set up in the magnetic circuit clearance between the lateral wall internal surface of U iron and magnet and china department, its characterized in that: the short circuit ring is tightly attached to the inner surface of the side wall of the U-shaped iron, and the voice coil is arranged in a gap between the short circuit ring and the magnet and between the short circuit ring and the washer; the short circuit ring forms an up-down symmetrical structure by taking the center of the magnetic gap as an axis and covers the up-down stroke range of the voice coil.
2. The loudspeaker structure of claim 1, wherein the symmetrical shorting ring design is: the short circuit ring is made of a copper material or an aluminum material, and the short circuit ring is tightly adhered and fixed with the inner surface of the side wall of the U-shaped iron through glue.
3. The loudspeaker structure of claim 1, wherein the symmetrical shorting ring design is: the top of the side wall of the U iron is higher than the top ends of the washer and the voice coil, the upper part of the short circuit ring is bent to the top of the side wall of the U iron to form a bent part, and the bent part and the top of the side wall are bonded and fixed through glue; the lower part of the short circuit ring extends to the position close to the bottom of the U-shaped iron, and the bottom of the short circuit ring is slightly higher than the bottom of the magnet.
4. The utility model provides an adopt speaker structure of symmetry short circuit ring design, including T iron, magnet, china department, voice coil loudspeaker voice coil and short circuit ring, magnet assembly is on T iron, and china department assembles on magnet, and wherein a magnetic circuit clearance is constituteed to T iron, magnet and china department, provides a invariable magnetic field for the voice coil loudspeaker voice coil, and voice coil loudspeaker voice coil and short circuit ring set up in the magnetic circuit clearance between the lateral wall surface of T iron and magnet and china department, its characterized in that: the short circuit ring is tightly attached to the outer surface of the side wall of the T iron, and the voice coil is arranged in a gap between the short circuit ring and the magnet and between the short circuit ring and the washer; the short circuit ring forms an up-down symmetrical structure by taking the center of the magnetic gap as an axis and covers the up-down stroke range of the voice coil.
5. The loudspeaker structure according to claim 4, wherein the symmetrical shorting ring design is: the short circuit ring is made of a copper material or an aluminum material, and the short circuit ring is tightly adhered and fixed with the outer surface of the side wall of the T iron through glue.
6. The loudspeaker structure according to claim 4, wherein the symmetrical shorting ring design is: the top of the center post of the T iron is higher than the top ends of the washer and the voice coil, the upper part of the short circuit ring is bent to the top of the center post of the T iron to form a bent part, and the bent part and the top of the center post are bonded and fixed through glue; the lower part of the short circuit ring extends to the position close to the bottom of the external groove of the T iron, and the bottom of the short circuit ring is slightly higher than the bottom of the magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921440016.9U CN210075575U (en) | 2019-09-02 | 2019-09-02 | Loudspeaker structure adopting symmetrical short circuit ring design |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921440016.9U CN210075575U (en) | 2019-09-02 | 2019-09-02 | Loudspeaker structure adopting symmetrical short circuit ring design |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210075575U true CN210075575U (en) | 2020-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921440016.9U Active CN210075575U (en) | 2019-09-02 | 2019-09-02 | Loudspeaker structure adopting symmetrical short circuit ring design |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210075575U (en) |
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2019
- 2019-09-02 CN CN201921440016.9U patent/CN210075575U/en active Active
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