CN220087480U - Moving iron type vibrator with parallel magnet ring and nonlinear term offset - Google Patents
Moving iron type vibrator with parallel magnet ring and nonlinear term offset Download PDFInfo
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Abstract
The moving iron type vibrator with the parallel nonlinear magnetic ring term offset comprises a moving iron type vibrator body, wherein the moving iron type vibrator body comprises an outer cylinder, a vibration transmission sheet, a stator assembly and a rotor assembly, the stator assembly comprises a coil magnet combination structure, the rotor assembly comprises a magnetizer combination structure, a permanent magnet is arranged in the middle of the rotor assembly, and a coil is arranged outside; the number of the permanent magnets is N Magnetic field The number of coils is N Ring(s) ，N Magnetic field >N Ring(s) Or N Magnetic field ＜N Ring(s) ；N Magnetic field 1,2,3, …,100; n (N) Ring(s) 1,2,3, …,100; the inside of the moving iron type vibrator body is provided with 2N magnetic domains D which are designed in pairwise symmetry 1,i And D 2,i N is 1,2,3, …,20,i=1, 2,3, …; nonlinear term counteraction, resultant force of vibrator vibration and exciting current are in a linear relation, and obtained vibrator distortion is greatly reduced.
Description
Technical Field
The utility model relates to the technical field of vibrators, in particular to a moving iron vibrator with parallel magnetic coils and nonlinear term cancellation.
Background
The conventional moving iron unit for improving the high frequency sound quality of an earphone or a hearing aid is designed as shown in fig. 21, wherein an armature penetrates through a voice coil and is positioned in the middle of a magnetic field formed by two opposite pole faces of two magnets. When the current in the voice coil changes, the magnetic force lines and the magnetic flux in the magnetic circuit structure passing through the armature change, and the interaction force formed by the magnetic field also changes, so that the armature vibrates in the magnetic field. The vibration of armature drives the actuating lever, and the actuating lever drives the vibrating diaphragm vibration, and the vibration of vibrating diaphragm further promotes the air and produces the vibration to come out from the sound outlet through the mode sound wave of air conduction, produce sound.
The structure of such a general moving iron unit is not suitable for the design of bone conduction earphone vibrator, and actuator for tactile feedback. For bone conduction headphones, the vibrator needs to be faced, and the bone is pushed by vibration to transmit the vibration to the cochlea of the inner ear. For haptic feedback, the vibrator is applied to the skin, and the surface of the skin is pushed by vibration to generate a sense of touch. The vibration in both cases needs to have a much larger vibrational energy than the push air vibration. In a conventional moving iron design, the armature is light in weight, typically less than 0.5 gram, the combination of coil and magnet driving the armature to vibrate, and the size and dimensions are insufficient to propel the bone conduction headphones and the haptic feedback actuator to generate sufficient vibrational energy and force.
In addition, the armature above is of a strip shape, the movement direction of which can be seen as a swinging mode, rather than the integral translational vibration of the armature in the vibration direction. While bone conduction headphones and haptic feedback actuators often require the vibrator's vibration to be an integral translational vibration in the vibration direction. The effect of the vibration thus generated is best. In order to make the vibrator generate integral translational vibration, the vibration direction is assumed to be the Z-axis direction in design, so that in the cross section view seen from the Z-axis direction, the moving part of the vibrator needs to have a plurality of geometric centers, the force applied to the moving part of the vibrator surrounds the geometric centers, and the moment relative to the geometric centers needs to be zero. To do this, it is often required that the shape and stress of the vibrator have a certain symmetry. Obviously, the above moving iron design does not have such a feature.
Disclosure of Invention
The utility model aims to provide a moving iron type vibrator with parallel magnetic coils and nonlinear term cancellation.
The technical scheme of the utility model is as follows: the moving iron type vibrator with the parallel nonlinear magnetic ring term offset comprises a moving iron type vibrator body, wherein the moving iron type vibrator body comprises an outer cylinder, a vibration transmission sheet, a stator assembly and a rotor assembly, the stator assembly comprises a coil magnet combination structure, the rotor assembly comprises a magnetizer combination structure, the stator assembly is fixed in the outer cylinder, the vibration transmission sheet is fixed on the outer cylinder, the rotor assembly is fixedly connected with the vibration transmission sheet through at least one position, and the permanent magnet is arranged outside when the center of the rotor assembly is seen outwards; the number of the permanent magnets is N Magnetic field The number of coils is N Ring(s) ，N Magnetic field >N Ring(s) Or N Magnetic field ＜N Ring(s) ；N Magnetic field 1,2,3, …,20; n (N) Ring(s) 1,2,3, …,20; the inside of the moving iron type vibrator body is provided with 2N magnetic domains D which are designed in pairwise symmetry 1,i And D 2,i N is 1,2,3, …,20, i=1, 2,3, …; the main magnetic force line closed curve of the coil and the main magnetic force line closed curve of the permanent magnet respectively pass through the magnetic domain D 1,i And D 2,i And in magnetic domain D 1,i In the magnetic field D, the magnetic force line direction of the coil is the same as that of the permanent magnet 2,i The magnetic force line direction of the coil is opposite to the magnetic force line direction of the permanent magnet; or in the magnetic domain D 1,i In the magnetic field D, the magnetic force line direction of the coil is opposite to that of the permanent magnet 2,i The magnetic force line direction of the coil is the same as the magnetic force line direction of the permanent magnet.
Compared with the prior art, the moving iron type vibrator with the magnetic coil parallel nonlinear term cancellation provided by the utility model has the following improvement and advantages:
1. the moving iron type vibrator with parallel magnetic ring nonlinear term offset adopts symmetrical or asymmetrical design, so that nonlinear terms can be offset in the final resultant force, only linear term parts aiming at current are left, resultant force of vibrator vibration and exciting current are in constant linear relation, distortion of the vibrator is greatly reduced, and fidelity of the vibrator to an original audio signal or a touch feedback signal is improved.
2. The magnetic ring parallel nonlinear term counteracted moving iron type vibrator has uniform and balanced stress, realizes integral translational vibration of the vibrator and has good vibration effect.
Drawings
The utility model is further explained below with reference to the drawings and examples:
FIG. 1 is a cross-sectional view of embodiment 1 of the present utility model;
FIG. 2 is a closed curve of magnetic lines of force of the coil and the permanent magnet of example 1 of the present utility model;
FIG. 3 is a magnetic domain analysis chart of example 1 of the present utility model;
FIG. 4 is a diagram of the relationship between magnetic domains and stator assembly of embodiment 1 of the present utility model;
FIG. 5 is a force analysis diagram of a mover assembly of embodiment 1 of the present utility model;
FIG. 6 is a cross-sectional view of embodiment 2 of the present utility model;
FIG. 7 is a closed magnetic field line curve of the coil and the permanent magnet according to example 2 of the present utility model;
FIG. 8 is a magnetic domain analysis chart of example 2 of the present utility model;
FIG. 9 is a diagram of the relationship between magnetic domains and stator assemblies of embodiment 2 of the present utility model;
FIG. 10 is a force analysis diagram of a mover assembly of embodiment 2 of the present utility model;
FIG. 11 is a cross-sectional view of embodiment 3 of the present utility model;
FIG. 12 is a closed magnetic field line curve of the coil and the permanent magnet of example 3 of the present utility model;
FIG. 13 is a magnetic domain analysis chart of example 3 of the present utility model;
FIG. 14 is a graph of the relationship between magnetic domains and stator assemblies of embodiment 3 of the present utility model;
FIG. 15 is a force analysis diagram of a mover assembly of embodiment 3 of the present utility model;
FIG. 16 is a cross-sectional view of embodiment 4 of the present utility model;
FIG. 17 is a closed magnetic field line curve of the coil and the permanent magnet of example 4 of the present utility model;
FIG. 18 is a magnetic domain analysis chart of example 4 of the present utility model;
FIG. 19 is a graph of the relationship between magnetic domains and stator assembly of embodiment 4 of the present utility model;
FIG. 20 is a force analysis diagram of a mover assembly of embodiment 4 of the present utility model;
fig. 21 is a schematic structural view of a conventional moving iron unit.
Detailed Description
The following detailed description of the present utility model clearly and fully describes the technical solutions of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The magnetic rings are connected in parallel: the arrangement direction of the permanent magnet and the coil is parallel to the vibration direction of the vibrator when seen along the vibration direction of the vibrator, and the permanent magnet is arranged outside the coil when seen from the center outwards, namely the magnet coil is arranged outside the vibrator.
Magnetic domain: the moving iron type vibrator with magnetic ring parallel nonlinear term cancellation comprises at least one magnetic force acting domain. By magnetic field is meant a region of space within which there is an electromagnetic field or fields such that interaction forces occur between the components surrounding the magnetic field, which we define as the magnetic field. The magnetic domain is a space region where magnetic force interacts, and is generally composed of a space region (generating attraction or repulsion interaction) between a permanent magnet and a permanent magnet, or a space region (generating attraction interaction) enclosed between a permanent magnet and a magnetizer, or a space region enclosed between magnetizers (yokes) magnetized by a permanent magnet, or a space region where magnetic force interactions occur inside a permanent magnet (the permeability of a hard magnetic material constituting a permanent magnet is close to that of air).
In general, there are two types of magnetic fields currently available, the first type of magnetic field being a magnetic field enclosed by the interior of the mover assembly or the interior of the stator assembly; the second type is a magnetic force acting field enclosed between the rotor assembly and the stator assembly.
Example 1
Referring to fig. 1-5, a moving iron type vibrator with parallel magnetic ring nonlinear term cancellation comprises a moving iron type vibrator body 11, wherein the moving iron type vibrator body 11 comprises an outer cylinder 1, a vibration transmitting sheet 8, a stator assembly and a rotor assembly, the stator assembly comprises a coil magnet combined structure, the rotor assembly comprises a magnetizer combined structure, the stator assembly is fixed in the outer cylinder 1, the vibration transmitting sheet 8 is fixed on the outer cylinder 1, the rotor assembly is fixedly connected with the vibration transmitting sheet 8 through at least one position, the coil magnet combined structure comprises a coil 3, a permanent magnet 6 and a first magnetizer 4, the magnetizer combined structure comprises a second magnetizer 7, the coil magnet combined structure further comprises a first magnetizer ring 2, and the magnetizer combined structure further comprises a second magnetizer ring 5; the outer cylinder 1 may be a magnetically conductive outer cylinder or a non-magnetically conductive outer cylinder, and in order to reduce magnetic resistance, a magnetically conductive outer cylinder is preferable. The vibration-transmitting sheet 8 is of a circular, rectangular, racetrack or three-dimensional type, and can be selected and used as needed.
N Magnetic field ＝(N Ring(s) +1) n; n is a natural number, n=1, 2,3 …; when N is Magnetic field >1, the polarities of the two opposite end surfaces adjacent to the permanent magnet 6 are the same; when N is Ring(s) >1, the directions of currents in adjacent coils 3 are opposite, and the polarities of electromagnetic fields of two adjacent coils 3 are the same.
N Magnetic field ＝(N Ring(s) -1) n; n is a natural number, n=1, 2,3 …; when N is Magnetic field >1, the polarities of the two opposite end surfaces adjacent to the permanent magnet 6 are the same; when N is Ring(s) >1, the directions of currents in adjacent coils 3 are opposite, and the polarities of electromagnetic fields of two adjacent coils 3 are the same.
A magnetizer is used at the position, close to the shell, of the coil 3, so that the magnetic resistance of a magnetic circuit of the electromagnet formed by the coil is as small as possible; the permanent magnets in the magnet assembly are isolated by a magnetizer; yoke iron is used around the coil 3 and the permanent magnet 6, or magnetic conductive outer cylinder is used for the coil assembly and the housing close to the coil.
From the centre outwards, the linesThe coil 3 is outside, the permanent magnet 6 is inside, the permanent magnet 6 is one, the coil 3 is two, the directions of currents in the two coils 3 are opposite, the permanent magnet 6 and the first magnetic conduction ring 4 are tightly adhered and fixed to each other, the vibration transmission piece 8 is provided with two vibration transmission pieces 8, the two vibration transmission pieces 8 are respectively fixed on the top surface and the bottom surface of the outer cylinder 1, the second magnetic conduction ring 5 is fixed on the second magnetic conduction body 7, two ends of the second magnetic conduction body 7 are respectively fixed on the vibration transmission pieces 8, the first magnetic conduction ring 4 is fixed in the middle part of the inner side wall of the outer cylinder, the two coils 3 are respectively fixed on two sides of the first magnetic conduction ring 4, the first magnetic conduction ring 2 is fixedly arranged on the outer side of the two coils 3, the coils 3 and the first magnetic conduction ring 2 are both fixed on the inner side wall of the outer cylinder 1, the rotor component and the stator component are in a concave-convex staggered occlusion arrangement, the main magnetic line closing curve of the coil 3 and the main magnetic line closing curve of the permanent magnet 6 alternately pass through the rotor component and the stator component respectively, and the magnetic field D of the two symmetrical design is arranged inside the rotor body of the moving iron type vibrator 1,1 And D 2,1 The main magnetic force line closed curve of the coil 3 and the main magnetic force line closed curve of the permanent magnet 6 respectively pass through the magnetic domain D 1,1 And D 2,1 And in magnetic domain D 1,1 In the magnetic field D, the magnetic force line direction of the coil is opposite to that of the permanent magnet 2,1 The magnetic force line direction of the coil 3 is the same as the magnetic force line direction of the permanent magnet 6 iron.
In order to further explain the design method of moving iron type vibrator with parallel nonlinear term cancellation of magnetic coils, please refer to fig. 2 and 3, the air gap 1 forms a magnetic force acting domain D 1 The air gap 2 forms a magnetic force acting domain D 2 . In the magnetic force action field, the magnetic field generated by the permanent magnet 6 and the magnetic field generated by the electromagnet of the coil 3 are mutually overlapped to generate total magnetic flux/magnetic induction intensity, so that the components around the magnetic field generate interaction force.
In fig. 2 and 3, the number of coils 3 is two, for convenience of reference, denoted as coils 31 and 32, respectively, the current through coil 31 and the current through coil 32 being i, but the current direction in coil 31 and the current direction in coil 32 being opposite. Assuming that the magnetic flux corresponding to coil 1 is Φ i1 The magnetic flux corresponding to the coil 2 is phi i2 The magnetic flux corresponding to the permanent magnet is phi m . In magnetic field 1 (magnetic field 1), a wireThe magnetic force lines corresponding to the ring 31 have the same direction as the magnetic force lines corresponding to the permanent magnet, so that the total magnetic flux in the magnetic domain 1 is Φ i1 And phi is m Sum of (d) and (d). In the magnetic field 2 (magnetic field 1), the magnetic force lines corresponding to the coil 32 are opposite to the magnetic force lines corresponding to the permanent magnet, so that the total magnetic flux in the magnetic field 2 is Φ i2 And phi is m Is a difference in (c).
Φ D1 ＝Φ m +Φ i1
Φ D2 ＝Φ m -Φ i2
Assuming that the magnetic paths formed by the electromagnetic fields generated by the currents of the upper coil 31 and the coil 32 have the magnetic resistances Z i1 And Z i2 N is the number of turns of the coil, i is the current intensity, and then:
since the magnetic structure of the coil 1/2 is of a symmetrical design, Z i1 ＝Z i2 ＝Z i Therefore there areIn addition, it is assumed that the magnetic path formed by the electromagnetic field generated by the current has a flux guide G i The following steps are:
the magnetic flux corresponding to the permanent magnet can be expressed by a formula of magnetic induction intensity. Assuming that the magnetic induction intensity of the end face of the permanent magnet pole is B m The area of the end face of the magnetic pole is S m It is possible to obtain,
thereby having the following characteristics
Referring to fig. 2, the magnetic force line closed curves of the coil 31, the coil 32 and the permanent magnet are drawn separately. In the figure, the magnetic field lines generated by the coil 31 pass through the magnetic gap D 1 The magnetic field lines generated by the coil 31 pass through the magnetic gap D 2 The magnetic force lines generated by the permanent magnets sequentially pass through the magnetic gap D 1 And magnetic gap D 2 。
Referring to FIG. 4, a mover assembly, domain D, is shown 1 ，D 2 And a relationship diagram of the stator assembly. In the magnetic domain D 1 The middle rotor assembly receives a rightward suction force F from the stator assembly 1 In the magnetic domain D 2 The middle rotor assembly receives a leftward suction force F from the stator assembly 2 When the right direction is the positive direction, the resultant force of the stator components received by the rotor component is F 1 -F 2 。
Referring to fig. 5, fig. 5 is a force analysis diagram of the mover assembly isolated from each other, the mover assembly receives force from the stator assembly, respectively suction force F to the right 1 And suction force F to the left 2 The resultant force is F 1 -F 2 。
F Moving iron ＝F 1 -F 2
The formula of the electromagnetic force generated by each magnetic domain is further deduced. The electromagnetic attraction force acting on the magnetized ferromagnetic object is proportional to the total area of the magnetic lines passing through the magnetic poles and the square of the magnetic induction. If the magnetic induction B is uniformly distributed along the pole surface and the air gap length is calculated to be small, the formula for calculating the electromagnetic attraction force is calculated by the formula of maxwell Wei Gong, which is expressed as:
f: electromagnetic attraction force
B: magnetic flux density (Magnetic flux density) or magnetic induction
: magnetic flux across a medium
S: magnetic force line passing through magnetic pole area
μ 0 : permeability of air
C: the constant has different values for different scenes. C if the force is generated between the permanent magnet and the permanent magnet m2m Usually, the value is 1, and an accurate value is obtained through actual measurement in the actual design process; c if the force between the permanent magnet and the magnetic iron (yoke) is applied m2y Usually, the value is 1/2, and an accurate value is obtained through actual measurement in the actual design process; if the force between the magnet (yoke) and the magnet (yoke) is the force, C y2y Usually, the value is 1/4, and the accurate value is obtained through actual measurement in the actual design process.
The above formula is used to calculate the electromagnetic attraction force in the above magnetic fields 1 and 2 as follows:
wherein S is D1 ，S D2 The areas of the annular end faces corresponding to the magnetic domains 1 and 2 respectively, and S D1 ＝S D1 ＝S D . Thus, there are:
the method comprises the following steps:
because of
F Moving iron ＝F 1 -F 2
Then there is
F Moving iron, linear ＝F Moving iron, linear +F Moving iron, nonlinear
Will F 1，linear ，F 2，linear ，F 1，nonlinear ，F 1，nonlinear Substituted into F Moving iron, linear And F Moving iron, nonlinear The calculation is as follows:
because of
Thus, there are:
likewise calculate F Moving iron, nonlinear ，
So that the resultant force of the moving iron as the moving part is:
from the above derivation, the following features can be seen:
1) In the resultant linear term F Moving iron, linear In component F 1，linear And F 2，linear The respective linear terms are superimposed separately so that the resultant linear term F Moving iron, linear And the coil current is larger.
2) In the resultant nonlinear term F Moving iron, nonlinear In component F 1，nonlinear And F 2，nonlinear The respective nonlinear terms cancel each other out so that the resultant nonlinear term F Moving iron, nonlinear Zero.
The vibrator structure is called a moving iron vibrator with parallel magnetic coil type nonlinear term cancellation. The structure can be applied to not only vibrators but also brakes, and a moving iron vibrator or brake adopting the structure is also called a moving iron vibrator or brake with magnetic coil parallel nonlinear term cancellation.
Example 2
Referring to fig. 6-10, a moving iron type vibrator with parallel magnetic ring nonlinear term cancellation comprises a moving iron type vibrator body 11, wherein the moving iron type vibrator body 11 comprises an outer cylinder 1, a vibration transmitting sheet 8, a stator assembly and a rotor assembly, the stator assembly comprises a coil magnet combined structure, the rotor assembly comprises a magnetizer combined structure, the stator assembly is fixed in the outer cylinder 1, the vibration transmitting sheet 8 is fixed on the outer cylinder 1, the rotor assembly is fixedly connected with the vibration transmitting sheet 8 through at least one position, the coil magnet combined structure comprises a coil 3, a permanent magnet 6 and a first magnetizer 4, the magnetizer combined structure comprises a second magnetizer 7, the coil magnet combined structure further comprises a first magnetizer ring 2, and the magnetizer combined structure further comprises a second magnetizer ring 5; the outer cylinder 1 may be a magnetically conductive outer cylinder or a non-magnetically conductive outer cylinder, and in order to reduce magnetic resistance, a magnetically conductive outer cylinder is preferable.
The moving iron type vibrator body 11 comprises an outer cylinder 1, a vibration transmission sheet 8, a stator assembly and a rotor assembly, wherein the stator assembly comprises a coil 3, a permanent magnet 5 and a first magnetizer 2, the rotor assembly comprises a second magnetizer 7, the rotor assembly further comprises a first magnetic conduction ring 4 and a second magnetic conduction ring 6, and the coil 3 is arranged in the middle of the vibrator body when seen from the outside from the centerThe permanent magnets 5 are arranged in the outer cylinder, the polarities of two opposite end faces adjacent to the permanent magnets 5 are the same, the two end faces adjacent to the permanent magnets 5 are N poles, two vibration transmission sheets 8 are arranged, the two vibration transmission sheets 8 are respectively fixed on the top surface and the bottom surface of the outer cylinder 1, two ends of a second magnetic conductor 7 are respectively fixed on the vibration transmission sheets 8, a second magnetic conduction ring 6 is fixed in the middle of the second magnetic conductor 7, a first magnetic conduction ring 4 is fixed at the end part of the second magnetic conductor 7, a coil 3 is fixed in the middle of the inner side wall of the outer cylinder 1, two sides of the coil 3 are fixedly provided with first magnetic conductors 2, the two permanent magnets 5 are respectively and tightly adhered and fixed on the first magnetic conductors 2, and the first magnetic conductors 2 are distributed and fixed at two ends of the inner side wall of the outer cylinder 1; the rotor component and the stator component are in concave-convex staggered occlusion arrangement, the main magnetic force line closed curve of the coil 3 and the main magnetic force line closed curve of the permanent magnet 5 respectively and alternately penetrate through the rotor component and the stator component, and 4 magnetic domains D which are symmetrically designed in pairs are arranged in the moving iron type vibrator body 11 1,1 、D 1,2 、D 2,1 And D 2,2 Wherein the magnetic domain D 1,1 And D 2,1 Symmetric magnetic domain D 1,2 And D 2,2 The main magnetic force line closed curve of the coil 3 and the main magnetic force line closed curve of the permanent magnet 5 respectively pass through the magnetic domain D symmetrically 1,1 、D 1,2 、D 2,1 And D 2,2 In the magnetic domain D 1,1 And D 2,1 In the magnetic field D, the magnetic force line direction of the coil 3 is the same as that of the permanent magnet 5 1,2 And D 2,2 The magnetic force lines of the coil 3 are opposite to those of the permanent magnet 5.
The derivation process of the nonlinear term cancellation in embodiment 2 is the same as that in embodiment 1, and will not be repeated.
Example 3
Referring to fig. 11-15, a moving iron type vibrator with parallel magnetic coil nonlinear term cancellation includes a moving iron type vibrator body 11, the moving iron type vibrator body 11 includes an outer cylinder 1, a vibration transmitting sheet 9, a stator assembly and a rotor assembly, the stator assembly includes a coil magnet combination structure, the rotor assembly includes a magnetizer combination structure, the stator assembly is fixed in the outer cylinder 1, the vibration transmitting sheet 9 is fixed on the outer cylinder 1, the rotor assembly is fixedly connected with the vibration transmitting sheet 9 through at least one point, and the coil magnetThe combined iron structure comprises coils 3, permanent magnets 6 and first magnetizers 4, the combined iron structure comprises second magnetizers 8, the combined iron structure further comprises first magnetizers 2, the combined magnetizers also comprise magnetic sleeves 5 and second magnetizers 7, the coils 3 are arranged outside and the permanent magnets 6 are arranged inside, the number of the two coils 3 is three when seen from the center outwards, the polarities of the two opposite end faces of the adjacent permanent magnets 6 are the same, the directions of currents in the adjacent coils 3 are opposite, the adjacent two coils are the same, the polarities of electromagnetic fields of the adjacent two end faces are the same, two vibration transmission sheets 9 are respectively fixed on the top face and the bottom face of the outer cylinder 1, the two ends of the second magnetizers 8 are respectively fixed on the vibration transmission sheets 9, the second magnetizers 6 are fixed in the middle of the second magnetizers 8, the three coils 3 are respectively fixed on the inner side walls of the outer cylinder 1, the first magnetizers 2 are fixedly arranged on the two sides of the coils 3, the two permanent magnets 6 are respectively tightly adhered and fixedly arranged on the first magnetizers 4, and the two vibration transmission sheets 9 are fixedly arranged on the two ends of the inner side walls of the outer cylinder 1; the rotor component and the stator component are in concave-convex staggered occlusion arrangement, the main magnetic force line closed curve of the coil 3 and the main magnetic force line closed curve of the permanent magnet 6 respectively and alternately penetrate through the rotor component and the stator component, and 6 magnetic domains D which are symmetrically designed in pairs are arranged in the moving iron type vibrator body 1,1 、D 2,1 、D 1,2 、D 2,2 、D 1,3 、D 2,3 Wherein the magnetic domain D 1,1 And D 2,1 Symmetric magnetic domain D 1,2 And D 2,2 Symmetry, D 1,3 And D 2,3 The main magnetic force line closed curve of the coil 3 and the main magnetic force line closed curve of the permanent magnet respectively pass through the magnetic domain D symmetrically 1,1 、D 2,1 、D 1,2 、D 2,2 、D 1,3 And D 2,3 。
The derivation process of the nonlinear term cancellation in embodiment 3 is the same as that in embodiment 1, and will not be repeated.
Example 4
Referring to fig. 16-20, a moving iron vibrator with parallel magnetic coils and nonlinear term cancellation comprises a moving iron vibrator body 11, wherein the moving iron vibrator body 11 comprises an outer cylinder 1, a vibration transmitting sheet 9, a stator assembly and a rotor assembly, the stator assembly comprises a coil magnet combined structure,the rotor assembly comprises a magnetizer combined structure, the stator assembly is fixed in the outer cylinder 1, the vibration transmission sheets 9 are fixed on the outer cylinder, the rotor assembly and the vibration transmission sheets 9 are fixedly connected through at least one position, the coil magnet combined structure comprises a coil 3, a permanent magnet 5 and a first magnetizer 4, the magnetizer combined structure comprises a second magnetizer 8, the coil magnet combined structure further comprises a first magnetizer ring 2, the magnetizer combined structure further comprises yoke irons 6, the number of the coils 3 is two, the number of the permanent magnets 5 is three, and the polarities of two opposite end faces adjacent to the permanent magnets 5 are the same; the directions of currents in adjacent coils 3 are opposite, the polarities of electromagnetic fields of two adjacent end faces are the same, two vibration transmission sheets 9 are arranged, two vibration transmission sheets 9 are respectively fixed on the top surface and the bottom surface of an outer cylinder 1, two ends of a second magnetic conductor 8 are respectively fixed on the vibration transmission sheets 9, a yoke 6 is fixed on the upper part of the second magnetic conductor 8, a first magnetic conductor 4 is fixed in the middle part of the inner side wall of the outer cylinder 1, two sides of the first magnetic conductor 4 are fixedly provided with the coils 3, the outer side of each coil 3 is fixedly provided with a first magnetic conduction ring 2, the coils 3 and the first magnetic conduction rings 2 are fixed on the inner side wall of the outer cylinder 1, three permanent magnets 5 are respectively fixed on the first magnetic conduction rings 2 and the first magnetic conductor 4, a rotor component and a stator component are in concave-convex staggered engagement, a main magnetic line closing curve of the coils 3 and a main magnetic line closing curve of the permanent magnets 5 alternately pass through the rotor component and the stator component respectively, and two magnetic fields D symmetrically designed in the inner part of a moving iron type vibrator body are arranged 1,1 And D 2,1 The main magnetic force line closed curve of the coil and the main magnetic force line closed curve of the permanent magnet respectively pass through the magnetic domain D 1,1 And D 2,1 In the magnetic domain D 1,1 In the magnetic field D, the magnetic force line direction of the coil is opposite to that of the permanent magnet 2,1 The magnetic force line direction of the coil is the same as the magnetic force line direction of the permanent magnet.
The derivation process of the nonlinear term cancellation in embodiment 4 is the same as that in embodiment 1, and will not be repeated.
The previous description is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The moving iron type vibrator with parallel magnetic ring and nonlinear term offset is characterized in that: the stator assembly comprises a coil magnet combination structure, the rotor assembly comprises a magnetizer combination structure, the stator assembly is fixed in the outer cylinder, the vibration transmission sheet is fixed on the outer cylinder, the rotor assembly and the vibration transmission sheet are fixedly connected through at least one position, and a permanent magnet of the coil magnet combination structure is arranged in the outside of the coil when the center of the rotor assembly is seen outwards; the number of the permanent magnets is N Magnetic field The number of coils is N Ring(s) ，N Magnetic field >N Ring(s) Or N Magnetic field ＜N Ring(s) ；N Magnetic field 1,2,3, …,100; n (N) Ring(s) 1,2,3, …,100; the moving iron type vibrator body is internally provided with 2N magnetic domains D which are designed in pairwise symmetry 1,i And D 2,i N is 1,2,3, …,100, i=1, 2,3, …; the main magnetic force line closed curve of the coil and the main magnetic force line closed curve of the permanent magnet respectively pass through the magnetic domain D 1,i And D 2,i And in magnetic domain D 1,i In the magnetic field D, the magnetic force line direction of the coil is the same as that of the permanent magnet 2,i Wherein the magnetic force line direction of the coil is opposite to the magnetic force line direction of the permanent magnet; or in the magnetic domain D 1,i Wherein the magnetic force lines of the coil are opposite to the magnetic force lines of the permanent magnet, and are in the magnetic field D 2,i The magnetic force line direction of the coil is the same as the magnetic force line direction of the permanent magnet.
2. The moving iron vibrator with parallel magnetic coil nonlinear term cancellation according to claim 1, wherein: the coil magnet combination structure comprises a coil, a permanent magnet and a first magnetizer, and the magnetizer combination structure comprises a second magnetizer.
3. The moving iron vibrator with parallel magnetic coil nonlinear term cancellation according to claim 2, characterized in that: the rotor component and the stator component are in concave-convex staggered occlusion arrangement, and the main magnetic force line closed curve of the coil and the main magnetic force line closed curve of the permanent magnet alternately pass through the rotor component and the stator component respectively.
4. A moving iron vibrator with parallel non-linear term cancellation of magnetic coils according to claim 3, characterized in that: n (N) Magnetic field ＝(N Ring(s) +1) n; n is a natural number, n=1, 2,3 …; when N is Magnetic field >1, the polarities of the two opposite end surfaces adjacent to the permanent magnet are the same; when N is Ring(s) >1, the directions of currents in adjacent coils are opposite, and the polarities of electromagnetic fields of two adjacent end faces of the adjacent coils are the same.
5. A moving iron vibrator with parallel non-linear term cancellation of magnetic coils according to claim 3, characterized in that: n (N) Magnetic field ＝(N Ring(s) -1) n; n is a natural number, n=1, 2,3 …; when N is Magnetic field >1, the polarities of the two opposite end surfaces adjacent to the permanent magnet are the same; when N is Ring(s) >1, the directions of currents in adjacent coils are opposite, and the polarities of electromagnetic fields of two adjacent end faces of the adjacent coils are the same.
6. A moving iron vibrator with parallel non-linear term cancellation of magnetic coils according to claim 3, characterized in that: the magnetic conductor is used at the position of the shell, which is close to the coil, so that the magnetic resistance of the magnetic circuit of the electromagnet formed by the coil is as small as possible; the permanent magnets in the magnet assembly are isolated by a magnetizer; a yoke is used around the coil and the permanent magnet, or a magnetic conductive outer cylinder is used for a coil assembly and a shell close to the coil.
7. The magnet according to claim 5The coil parallel nonlinear term counteracted moving iron type vibrator is characterized in that: the combined coil magnet structure further comprises a first magnetic conduction ring, the combined coil magnet structure further comprises a second magnetic conduction ring, the permanent magnets are one, the coils are two, the directions of currents in the coils are opposite, the permanent magnets and the first magnetic conduction rings are tightly adhered and fixed to each other, the vibration transmission sheets are two, the two vibration transmission sheets are respectively fixed to the top surface and the bottom surface of the outer cylinder, the second magnetic conduction rings are fixed to the second magnetic conduction rings, the two ends of the second magnetic conduction rings are respectively fixed to the vibration transmission sheets, the first magnetic conduction rings are fixed to the middle part of the inner side wall of the outer cylinder, the two coils are respectively fixed to the two sides of the first magnetic conduction rings, the two magnetic conduction rings are fixedly arranged on the outer sides of the coils, the coils and the first magnetic conduction rings are all fixed to the inner side wall of the outer cylinder, the rotor assembly and the stator assembly are in a concave-convex staggered arrangement, the main magnetic line closure curve of the coils and the main magnetic line closure curve of the permanent magnets alternately pass through the rotor assembly and the rotor assembly respectively, and the two magnetic line closure curves of the stator assembly are provided with two magnetic line closure curves of the rotor assembly alternately, and two magnetic line closure curves of the two magnetic lines of the stator assembly alternately pass through the rotor assembly and the rotor assembly alternately pass through the stator assembly, and the two magnetic line assemblies are provided with two magnetic field closure curves, and two magnetic structures are provided with two-shaped vibrator structures, and 2D and 2-D vibrator is designed 1,1 And D 2,1 The main magnetic force line closed curve of the coil and the main magnetic force line closed curve of the permanent magnet respectively pass through the magnetic domain D 1,1 And D 2,1 And in magnetic domain D 1,1 Wherein the magnetic force lines of the coil are opposite to the magnetic force lines of the permanent magnet, and are in the magnetic field D 2,1 The magnetic force line direction of the coil is the same as the magnetic force line direction of the permanent magnet.
8. The moving iron vibrator with parallel magnetic coil nonlinear term cancellation according to claim 4, wherein: the coil magnet combination structure further comprises a first magnetic conduction ring, the magnetic conduction ring combination structure further comprises a second magnetic conduction ring, the number of the coils is two, the number of the permanent magnets is two, polarities of two end faces adjacent to the permanent magnets are the same, two vibration transmission sheets are arranged, the two vibration transmission sheets are respectively fixed on the top surface and the bottom surface of the outer cylinder, and two ends of the second magnetic conduction ring are respectively fixed on the top surface and the bottom surface of the outer cylinderThe magnetic field generator is characterized in that the magnetic field generator is respectively fixed on the vibration transmission sheet, the second magnetic conduction rings are fixed on the second magnetic conductor, the coil and the first magnetic conductor are tightly adhered and fixed to each other, the permanent magnets are respectively fixed on two sides of the first magnetic conductor, the first magnetic conduction rings are fixedly arranged on the outer sides of the two permanent magnets, the first magnetic conduction rings are fixed on the middle part of the inner side wall of the outer cylinder, the two permanent magnets and the first magnetic conduction rings are fixed on the inner side wall of the outer cylinder, the rotor component and the stator component are in concave-convex staggered engagement arrangement, a main magnetic force line closing curve of the coil and a main magnetic force line closing curve of the permanent magnet alternately pass through the rotor component and the stator component respectively, and 2 magnetic fields D symmetrically designed in pairs are arranged inside the moving iron type vibrator body 1,1 And D 2,1 The main magnetic force line closed curve of the coil and the main magnetic force line closed curve of the permanent magnet respectively pass through the magnetic domain D 1,1 And D 2,1 In the magnetic domain D 1,1 Wherein the magnetic force lines of the coil are opposite to the magnetic force lines of the permanent magnet, and are in the magnetic field D 2,1 The magnetic force line direction of the coil is the same as the magnetic force line direction of the permanent magnet.
9. The moving iron vibrator with parallel magnetic coil nonlinear term cancellation according to claim 5, characterized in that: the coil magnet combination structure further comprises a first magnetic conduction ring, the magnetic conduction ring combination structure further comprises a second magnetic conduction ring, the number of the permanent magnets is two, the number of the coils is three, the polarities of the two opposite end faces adjacent to the permanent magnets are the same, the directions of currents in the adjacent coils are opposite, the polarities of electromagnetic fields of the two adjacent end faces are the same, the vibration transmission sheets are provided with two vibration transmission sheets, the two vibration transmission sheets are respectively fixed on the top surface and the bottom surface of the outer cylinder, the two ends of the second magnetic conduction ring are respectively fixed on the vibration transmission sheets, the second magnetic conduction ring is fixed in the middle of the second magnetic conduction ring, the three coils are respectively fixed on the inner side wall of the outer cylinder, the first magnetic conduction ring is fixedly arranged on the two sides of the coils, the two permanent magnets are respectively tightly adhered and fixed on the first magnetic conduction ring,the first magnetic conduction rings are distributed and fixed at two ends of the inner side wall of the outer cylinder; the rotor component and the stator component are in concave-convex staggered occlusion arrangement, the main magnetic force line closed curve of the coil and the main magnetic force line closed curve of the permanent magnet alternately pass through the rotor component and the stator component respectively, and 6 magnetic domains D which are designed in pairwise symmetry are arranged in the moving iron type vibrator body 1,1 、D 2,1 、D 1,2 、D 2,2 、D 1,3 、D 2,3 Wherein the magnetic domain D 1,1 And D 2,1 Symmetric magnetic domain D 1,2 And D 2,2 Symmetry, D 1,3 And D 2,3 Symmetrically, the main magnetic force line closed curve of the coil and the main magnetic force line closed curve of the permanent magnet respectively pass through the magnetic domain D 1,1 、D 2,1 、D 1,2 、D 2,2 、D 1,3 And D 2,3 。
10. The moving iron vibrator with parallel magnetic coil nonlinear term cancellation according to claim 4, wherein: the coil magnet combination structure further comprises a first magnetic conduction ring, the magnetic conduction ring combination structure further comprises two yokes, the number of the coils is three, and polarities of two end faces adjacent to the permanent magnets are the same; the current in adjacent coils has opposite directions, the polarities of electromagnetic fields of two adjacent end surfaces are the same, the vibration transmission sheets are two, the vibration transmission sheets are respectively fixed on the top surface and the bottom surface of the outer cylinder, the two ends of the second magnetic conductor are respectively fixed on the vibration transmission sheets, the yoke iron is fixed on the upper part of the second magnetic conductor, the first magnetic conductor is fixed in the middle part of the inner side wall of the outer cylinder, the coils are fixedly arranged on the two sides of the first magnetic conductor, the first magnetic conductor ring is fixedly arranged on the outer side of each coil, the coils and the first magnetic conductor ring are both fixed on the inner side wall of the outer cylinder, the three permanent magnets are respectively fixed on the first magnetic conductor ring and the first magnetic conductor ring, the rotor assembly and the stator assembly are in a staggered and meshed shape, and the main magnetic line closing curves of the coils and the main magnetic line closing curves of the permanent magnets are respectively crossedThe rotor component and the stator component are penetrated in an alternative way, 2 magnetic domains D which are designed in pairwise symmetry are arranged in the moving iron type vibrator body 1,1 And D 2,1 The main magnetic force line closed curve of the coil and the main magnetic force line closed curve of the permanent magnet respectively pass through the magnetic domain D 1,1 And D 2,1 In the magnetic domain D 1,1 Wherein the magnetic force lines of the coil are opposite to the magnetic force lines of the permanent magnet, and are in the magnetic field D 2,1 The magnetic force line direction of the coil is the same as the magnetic force line direction of the permanent magnet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222530324.9U CN220087480U (en) | 2022-09-23 | 2022-09-23 | Moving iron type vibrator with parallel magnet ring and nonlinear term offset |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222530324.9U CN220087480U (en) | 2022-09-23 | 2022-09-23 | Moving iron type vibrator with parallel magnet ring and nonlinear term offset |
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| CN220087480U true CN220087480U (en) | 2023-11-24 |
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| CN202222530324.9U Active CN220087480U (en) | 2022-09-23 | 2022-09-23 | Moving iron type vibrator with parallel magnet ring and nonlinear term offset |
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| Country | Link |
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| CN (1) | CN220087480U (en) |
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