Linear rotation voice coil motor
阅读说明:本技术 一种直线旋转音圈电机 (Linear rotation voice coil motor ) 是由 张子娇 罗梅竹 姜燕 于 2020-07-06 设计创作,主要内容包括:本发明公开了一种直线旋转音圈电机,包括机壳、设置在所述机壳内部的定子和动子,定子包括安装于机壳的内壁的直线运动绕组、旋转运动绕组以及铁轭,动子包括支架轴、套设在支架轴上的非导磁橡胶环以及安装在所述非导磁橡胶环上的永磁体,支架轴的轴线方向的两端分别伸出机壳并分别可转动地安装于所述机壳,直线运动绕组、旋转运动绕组以及铁轭各自环设于动子,旋转运动绕组包括绕在所述铁轭上的多匝第一线圈,直线运动绕组包括绕成圆筒形结构的多匝第二线圈。该直线旋转音圈电机旨在解决现有技术中电机难以兼顾两自由度运动且易损坏、易漏磁的技术问题。(The invention discloses a linear rotation voice coil motor which comprises a casing, a stator and a rotor, wherein the stator and the rotor are arranged in the casing, the stator comprises a linear motion winding, a rotary motion winding and an iron yoke, the linear motion winding, the rotary motion winding and the iron yoke are arranged on the inner wall of the casing, the rotor comprises a support shaft, a non-magnetic conductive rubber ring and a permanent magnet, the non-magnetic conductive rubber ring is sleeved on the support shaft, the permanent magnet is arranged on the non-magnetic conductive rubber ring, two ends of the support shaft in the axial direction respectively extend out of the casing and are respectively and rotatably arranged on the casing, the linear motion winding, the rotary motion winding and the iron yoke are respectively and annularly arranged on the rotor, the rotary motion winding comprises a plurality of turns. The linear rotation voice coil motor aims to solve the technical problems that in the prior art, a motor is difficult to take two degrees of freedom motion into consideration, and is easy to damage and leak magnetism.)
1. A linear rotation voice coil motor is characterized by comprising a casing, a stator and a rotor, wherein the stator and the rotor are arranged in the casing, the stator comprises a linear motion winding, a rotary motion winding and an iron yoke, the linear motion winding, the rotary motion winding and the iron yoke are arranged on the inner wall of the casing, the rotor comprises a support shaft, a non-magnetic conductive rubber ring and a permanent magnet, the non-magnetic conductive rubber ring is sleeved on the support shaft, the permanent magnet is arranged on the non-magnetic conductive rubber ring, two ends of the support shaft in the axial direction respectively extend out of the casing and are respectively and rotatably arranged on the casing, the linear motion winding, the rotary motion winding and the iron yoke are respectively and annularly arranged on the rotor, the rotary motion winding comprises a plurality of turns of first coils wound on the iron yoke, the plane where each turn of the first coil is located is superposed with the axial line of the support shaft, the, the plane of each turn of the second coil is vertical to the axis of the support shaft.
2. The linear-rotary voice coil motor of claim 1, wherein the non-magnetically conductive rubber ring has first and second shoe-shaped slots spaced 180 ° apart, the permanent magnets comprising a first shoe-shaped permanent magnet shaped to fit within the first shoe-shaped slot and a second shoe-shaped permanent magnet shaped to fit within the second shoe-shaped slot.
3. The linear-rotary voice coil motor of claim 1, wherein the linear-motion winding is inside the rotary-motion winding.
4. The linear-rotary voice coil motor of claim 1, wherein the iron yoke is a cylindrical structure consisting of two half-cylindrical iron yokes.
5. The linear-motion voice coil motor of claim 1, wherein an end cap is attached to one end of the housing, and one end of the bobbin is rotatably mounted to the end cap and protrudes from the end cap as a resultant motion output.
6. The linear rotary voice coil motor of claim 1, wherein both ends of the holder shaft in the axial direction are respectively mounted to the housing through bearings.
7. The linear-rotation voice coil motor according to any one of claims 1 to 6, wherein a magnetic conductive ring is provided at one end of the iron yoke in the axial direction of the holder shaft.
8. The linear-rotary voice coil motor according to any one of claims 1 to 6, wherein an inner wall of the casing is provided with a slot for fixing the linear motion winding, the rotary motion winding, and the iron yoke.
Technical Field
The invention belongs to the field of motors, and particularly relates to a linear rotating voice coil motor.
Background
The motor mainly includes stator and active cell (or active cell), mostly is independent linear electric motor or rotating electrical machines among the prior art, has the motor that can compromise two kinds of movements at a short time, also easily appears the magnetic leakage phenomenon in the motor moreover, and active cell in the motor also can not obtain fine protection. Therefore, with the development of motor technology, exploration and research on the more excellent performance of the motor technology are imperative.
Disclosure of Invention
Technical problem to be solved
Based on the technical scheme, the invention provides a linear rotating voice coil motor, and aims to solve the technical problems that the motor in the prior art is difficult to realize two-degree-of-freedom motion, easy to damage and easy to leak magnetism.
(II) technical scheme
In order to solve the technical problem, the invention provides a linear rotating voice coil motor, which comprises a casing, a stator and a rotor, wherein the stator and the rotor are arranged in the casing, the stator comprises a linear moving winding, a rotating moving winding and an iron yoke, the linear moving winding, the rotating moving winding and the iron yoke are arranged on the inner wall of the casing, the rotor comprises a support shaft, a non-magnetic conductive rubber ring sleeved on the support shaft and a permanent magnet arranged on the non-magnetic conductive rubber ring, two ends of the support shaft in the axial direction respectively extend out of the casing and are respectively and rotatably arranged on the casing, the linear moving winding, the rotating moving winding and the iron yoke are respectively and annularly arranged on the rotor, the rotating moving winding comprises a plurality of turns of first coils wound on the iron yoke, the plane where each turn of the first coil is located is overlapped with the axial line of the support shaft, the linear moving winding comprises a plurality of turns of second, the plane of each turn of the second coil is vertical to the axis of the support shaft.
Preferably, the non-magnetic conductive rubber ring is provided with a first tile-shaped slot and a second tile-shaped slot which are arranged at an interval of 180 degrees, and the permanent magnet comprises a first tile-shaped permanent magnet which is installed in the first tile-shaped slot in a shape matching manner and a second tile-shaped permanent magnet which is installed in the second tile-shaped slot in a shape matching manner.
Preferably, the linear motion winding is inside the rotary motion winding.
Preferably, the iron yoke is a cylindrical structure formed by two semi-cylindrical iron yokes.
Preferably, one end of the housing is connected to an end cover, and one end of the support shaft is rotatably mounted on the end cover and protrudes out of the end cover to serve as a resultant motion output end.
Preferably, both ends of the holder shaft in the axial direction are respectively mounted to the housing through bearings.
Preferably, one end of the iron yoke along the axial direction of the support shaft is provided with a magnetic conductive ring.
Preferably, the inner wall of the housing is provided with a clamping groove for fixing the linear motion winding, the rotary motion winding and the iron yoke.
(III) advantageous effects
Compared with the prior art, the linear rotating voice coil motor has the beneficial effects that:
if the motor is required to simultaneously complete linear motion and rotary motion, the linear motion winding and the rotary motion winding need to be electrified simultaneously, the electrifying directions of the two windings are mutually vertical and do not interfere with each other, and the linear rotary voice coil motor can simultaneously realize linear reciprocating motion and 360-degree rotary motion, namely, the motion with two degrees of freedom can be realized. And the non-magnetic-conductive rubber ring is used as a rotor anti-collision ring and plays roles of magnetic isolation, magnetic leakage prevention and permanent magnet fixation.
The advantages of the invention not described herein will be explained in the following, where appropriate.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
fig. 1 is a perspective view of a linear rotary voice coil motor according to an embodiment of the present invention;
fig. 2 is a perspective cross-sectional view of a linear rotary voice coil motor according to an embodiment of the present invention;
FIG. 3 is a perspective view of a linear motion winding according to an embodiment of the present invention;
FIG. 4 is a perspective view of a rotary motion winding according to an embodiment of the present invention;
fig. 5 is a perspective view of a mover according to an embodiment of the present invention;
fig. 6 is a perspective view of a non-magnetic conductive rubber ring according to an embodiment of the present invention.
Description of reference numerals:
the magnetic field sensor comprises a
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; the two elements may be mechanically or electrically connected, directly or indirectly connected through an intermediate medium, or connected through the inside of the two elements, or "in transmission connection", that is, connected in a power manner through various suitable manners such as belt transmission, gear transmission, or sprocket transmission. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 6, the present invention provides a linear rotating voice coil motor, the linear rotating voice coil motor includes a
The linear rotation voice coil motor is of a moving magnetic steel type, and is free of cable dragging in the moving process, so that the problem that 360-degree rotation cannot be achieved due to the cable winding problem is solved, the problems of precision loss and reliability caused by cable dragging are solved fundamentally, and the linear rotation voice coil motor is suitable for a multi-dimensional precision moving platform. The linear motion and the rotary motion share the same magnetic field, but can be completely decoupled, so that the mutual influence of the linear motion magnetic field and the rotary motion magnetic field in the operation of the motor is avoided.
According to the embodiment of the invention, the non-magnetic
According to a particular embodiment of the invention, the linear movement winding is inside the rotary movement winding. The
According to the preferred embodiment of the present invention, one end of the
The specific working principle of the linear rotating voice coil motor is as follows:
first, generation of linear motion: two permanent magnets are arranged in the rotor, the polarities of the two permanent magnets are the same, and the direction from the rotor to the stator is temporarily set as the magnetizing direction. As shown in fig. 3, the single turn wire in the linear motion winding is in a circle shape, and when a clockwise direct current is applied, the applied wire receives a force directed outward from the paper surface according to the lorentz force principle F — BIL. Since the linear motion windings are fixed to the
The advancing and positioning of the linear motion are realized by controlling the on-off and the direction of the current in the linear motion coil. The excitation magnetic field of the secondary permanent magnet of the motor is vertical to the current direction in the winding, and the Lorentz force generated by the interaction of the magnetic field and the direct current is vertical to the magnetic line of force and the effective side of the linear winding according to the right-hand spiral rule. When a certain amount of direct current is introduced into the winding, the linear motion winding is subjected to a constant Lorentz force; when the direct current introduced into the winding changes, the Lorentz force borne by the linear motion winding changes; when the direction of the direct current introduced into the winding is changed, the direction of the Lorentz force borne by the linear motion winding is changed, and the winding moves towards the opposite direction; when the winding is not electrified, the linear motion winding is not stressed and is still.
Then, the generation of the rotational motion. The whole rotating winding is composed of two rotating coils shown in fig. 4 and the
The advancing and positioning of the rotary motion are realized by controlling the on-off and the direction of the current in the rotary motion coil. The excitation magnetic field of the secondary permanent magnet of the motor is vertical to the current direction in the winding, and the Lorentz force generated by the interaction of the magnetic field and the direct current is vertical to the magnetic line of force and the effective side of the rotary motion winding according to the right-hand spiral rule. When a certain amount of direct current is introduced into the winding, the rotating movement winding is subjected to a constant Lorentz force; when the direct current introduced into the winding changes, the Lorentz force borne by the rotating motion winding changes; when the direction of the direct current introduced into the winding is changed, the direction of the Lorentz force applied to the rotating motion winding is changed, and the winding rotates in the opposite direction; when no current is applied to the windings, the rotating windings are not stressed and are stationary.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
- 上一篇:一种医用注射器针头装配设备
- 下一篇:水平线性振动电机