CN111245191A - High response speed's mirror motor and mirror system that shakes - Google Patents
High response speed's mirror motor and mirror system that shakes Download PDFInfo
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- CN111245191A CN111245191A CN202010251497.XA CN202010251497A CN111245191A CN 111245191 A CN111245191 A CN 111245191A CN 202010251497 A CN202010251497 A CN 202010251497A CN 111245191 A CN111245191 A CN 111245191A
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- motor shaft
- motor
- light
- galvanometer
- response speed
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/16—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
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- Engineering & Computer Science (AREA)
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a high-response-speed galvanometer motor and a galvanometer system, which comprise a shell, a motor shaft and a rotor coil, wherein the rotor coil is positioned in the shell, sleeved on the motor shaft and used for driving the motor shaft to rotate; the rotor coil is wound by an oxygen-free copper enameled wire to form a hollow cup coil, the central axis of the hollow cup coil is superposed with the rotation axis of the motor shaft, a plurality of magnetic steel sheets made of permanent magnetic materials are arranged on the inner side wall of the shell, and the magnetic steel sheets are distributed around the hollow cup coil along the circumferential direction. The invention also discloses a galvanometer system which comprises a galvanometer and the galvanometer motor, wherein the galvanometer is arranged at one end of the motor shaft and can be driven by the motor shaft to rotate. The mirror vibration motor with high response speed and the mirror vibration system adopting the technical scheme have the advantages of novel structure, ingenious design and easy realization, effectively improve the electromagnetic efficiency of the rotor coil, reduce the rotational inertia, obviously improve the response speed of the mirror vibration motor and make the mirror vibration system easier to control.
Description
Technical Field
The invention relates to the technical field of parts of photoelectric systems, in particular to a high-response-speed mirror vibrating motor and a mirror vibrating system.
Background
The mirror-vibrating motor is a special swing motor, and the basic principle is that an electrified coil generates torque in a magnetic field, but unlike a rotating motor, a rotor of the mirror-vibrating motor can only deflect to a certain angle and cannot rotate like the rotor of a common motor.
The galvanometer motor generally has different structural forms and configurations. Conventionally, the rotor of the galvanometer motor is made of permanent magnetic material, and the rotor and the galvanometer driven by the rotor are oscillated by direct current or alternating current. At present, the actually used vibrating mirror motor generally adopts a moving iron type structure, and a rotor part is arranged inside the vibrating mirror motor and is provided with an iron core. Therefore, the rotor is restricted by the weight and volume of the material used, and the response speed and performance of the galvanometer motor are restricted.
It is urgent to solve the above problems.
Disclosure of Invention
The invention provides a high-response-speed galvanometer motor and a galvanometer system, aiming at solving the technical problem that the galvanometer motor is slow in response speed.
The technical scheme is as follows:
a high response speed galvanometer motor and galvanometer system, comprising:
a housing;
the motor shaft, its at least one end is passed through the said body;
the rotor coil is positioned in the shell, sleeved on the motor shaft and used for driving the motor shaft to rotate;
the key points are as follows:
the rotor coil is a hollow cup coil formed by winding an oxygen-free copper enameled wire, the central axis of the hollow cup coil is overlapped with the rotation axis of the motor shaft, a plurality of magnetic steel sheets made of permanent magnetic materials are arranged on the inner side wall of the shell, and the magnetic steel sheets are circumferentially distributed around the hollow cup coil.
By adopting the structure, the magnetic steel sheet made of the permanent magnet material is fixedly arranged on the shell and does not rotate like the traditional motor, the coil of the hollow cup is of a cylindrical structure with an opening at one end, is similar to a cup shape and is formed by winding the oxygen-free copper enameled wire, and an iron core is omitted, so that the iron loss is avoided, the electromagnetic efficiency of the rotor coil is effectively improved, the rotational inertia is reduced, the response speed of the galvanometer motor is obviously improved, and the galvanometer motor is easier to control.
Preferably, the method comprises the following steps: the magnetic steel sheets are of a sheet structure with a fan-shaped cross section, magnetic steel sheet mounting holes matched with the corresponding magnetic steel sheets are formed in the side wall of the shell, and the magnetic steel sheets are respectively embedded in the corresponding mounting holes and fixed through glue. By adopting the structure, the assembly is easy, and the structure is firm and reliable.
Preferably, the method comprises the following steps: the casing is including being cylindrical casing main part and closing first end cover and the second end cover at casing main part both ends respectively, and each mounting hole distributes on casing main part along circumference, first end cover is worn out to the one end of motor shaft. By adopting the structure, the internal parts are easy to assemble.
Preferably, the method comprises the following steps: the motor shaft is provided with a first bearing and a second bearing, the hollow cup coil is positioned between the first bearing and the second bearing, the first bearing is supported between the first end cover and the motor shaft, the first bearing is supported between the shell body and the motor shaft, and the shell body, the second end cover and the second bearing are encircled to form a feedback device installation cavity. By adopting the structure, the rotating concentricity of the motor shaft is ensured, the feedback device is convenient to install, and the magnetic interference to the feedback device is shielded.
Preferably, the method comprises the following steps: the feedback device is characterized in that a PCB is arranged in the feedback device installation cavity, a light-emitting element used for emitting light and a photosensitive element used for sensing light are arranged on the PCB, a shading sheet capable of shading light is installed after one end of the motor shaft close to the second bearing penetrates through the PCB, and a plurality of light holes used for light transmission are formed in the shading sheet. By adopting the structure, if the light-shielding sheet completely shields the light-emitting element or the photosensitive element, the light can not irradiate the photosensitive element, and the current is very small; when the light-shielding sheet does not shield the light-emitting element and the photosensitive element, light can reach the photosensitive element to generate photocurrent; the photocurrent is in direct proportion to the illumination intensity, and the rotating position of the light shielding sheet can be obtained through output voltage, so that the rotating angle of a motor shaft (a rotor coil) is fed back.
Preferably, the method comprises the following steps: the light-emitting element and the photosensitive element are arranged oppositely by taking the motor shaft as a symmetrical axis, and the number of the light holes is two, the light holes are fan-shaped, and the light holes are arranged oppositely by taking the motor shaft as a symmetrical axis. By adopting the structure, the accuracy of feeding back the rotation angle of the motor shaft (rotor coil) is greatly improved.
Preferably, the method comprises the following steps: the inner surface of the second end cover is a rough surface. With the above structure, diffuse reflection of light can be realized.
Preferably, the method comprises the following steps: the light-emitting element is a light-emitting diode, and the photosensitive element is a photosensitive diode or a photosensitive triode or a photosensitive resistor. By adopting the structure, the photoelectric elements are matched with each other, the measured parameters can be converted into optical signals, and then the optical signals are converted into electric signals to be output, so that the photoelectric sensor is low in cost, stable, reliable and high in accuracy.
Preferably, the method comprises the following steps: the magnetic steel sheet is made of rare earth permanent magnetic materials, the shell is made of non-magnetic conducting materials, and by adopting the design, the magnetic steel sheet has high magnetic energy and high remanence performance, and the shell does not conduct magnetism, so that the galvanometer motor has a light structure and smaller rotating resistance, and the response speed of the galvanometer motor can be obviously improved.
The utility model provides a mirror system shakes which the main points lie in: the high-response-speed mirror vibration motor comprises a mirror vibration and the high-response-speed mirror vibration motor, wherein the mirror vibration is installed at one end of a motor shaft and can be driven by the motor shaft to rotate.
By adopting the structure, the galvanometer system has extremely high response speed and is easier to control.
Compared with the prior art, the invention has the beneficial effects that:
the mirror vibration motor with high response speed and the mirror vibration system adopting the technical scheme have the advantages of novel structure, ingenious design and easy realization, effectively improve the electromagnetic efficiency of the rotor coil, reduce the rotational inertia, obviously improve the response speed of the mirror vibration motor and make the mirror vibration system easier to control.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a vertical cross-sectional view of the present invention;
FIG. 3 is a transverse cross-sectional view of the present invention;
fig. 4 is a schematic structural view of the light shielding sheet.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
As shown in fig. 1-3, a galvanometer motor and a galvanometer system with high response speed mainly comprises a shell 1, a motor shaft 2, a feedback device, a rotor coil 3 and a plurality of magnetic steel sheets 4.
Referring to fig. 1 to 3, the housing 1 includes a housing body 1a, and a first end cap 1b and a second end cap 1c respectively covering two ends of the housing body 1 a. The housing body 1a is a cylindrical structure, and one end of the motor shaft 2 penetrates through the first end cover 1 b.
Referring to fig. 2, a motor shaft 2 is provided with a first bearing 5 and a second bearing 6, a rotor coil 3 is located between the first bearing 5 and the second bearing 6, the first bearing 5 is supported between a first end cover 1b and the motor shaft 2, the second bearing 6 is supported between a housing body 1a and the motor shaft 2, the housing body 1a, the second end cover 1c and the second bearing 6 surround to form a feedback device mounting cavity 7, and a feedback device is disposed in the feedback device mounting cavity 7.
Further, wave springs may be provided between the first bearing 5 and the first end cover 1b and the motor shaft 2 and between the second bearing 6 and the housing body 1a and the motor shaft 2, to provide a reliable turning force.
Referring to fig. 2 and 3, the rotor coil 3 is located in the housing 1 and is sleeved on the motor shaft 2 for driving the motor shaft 2 to rotate. Specifically, the rotor coil 3 is wound from an oxygen-free copper enameled wire into a coreless coil which is approximately cylindrical in configuration and is open at one end near the first end cap 1b and closed at one end near the second end cap 1c, and thus, is approximately hollow cup-shaped in its entirety. And the central axis of the coreless coil coincides with the axis of rotation of the motor shaft 2.
Referring to fig. 1 and 3, a plurality of magnetic steel sheets 4 made of permanent magnetic material are disposed on the inner side wall of the housing 1, and the magnetic steel sheets 4 are circumferentially distributed around the coreless coil. Specifically, magnetic steel sheet mounting holes 1d corresponding to the corresponding magnetic steel sheets 4 are formed in the side wall of the housing main body 1a, and the magnetic steel sheets 4 are respectively embedded in the corresponding mounting holes 1d and fixed by glue.
The magnetic steel sheet 4 is of a sheet structure with a sector-shaped cross section, the magnetic steel sheet 4 is made of rare earth permanent magnet materials and has high magnetic energy and high remanence performance, the shell 1 is made of non-magnetic materials and is not magnetic, and for example, the shell 1 can be made of stainless steel materials. The two are mutually matched, so that the galvanometer motor has a light structure and smaller rotating rejection, and the response speed of the galvanometer motor can be obviously improved.
When the motor is powered on, the magnetic steel sheet 4 interacts with the hollow cup coil to generate torque, so that the hollow cup coil can rotate the motor shaft 2, and when alternating current is supplied to the hollow cup coil, the motor shaft 2 performs reciprocating rotation motion in the shell 1.
It should be noted that the magnetizing direction of the magnetic steel sheet 4 is radial magnetizing, and the number of poles is even.
Referring to fig. 2 and 4, the feedback device mainly includes a PCB 8, a light emitting device, a photosensitive device and a light shielding sheet 9, and in order to cooperate with the feedback device, the inner surface of the second end cap 1c is a rough surface, which can perform diffuse reflection.
Referring to fig. 1 and 2, the PCB 8 is mounted in the feedback device mounting cavity 7, the PCB 8 has a connection portion 8a extending outward, the housing 1 has a through hole 1e corresponding to the connection portion 8a, and the connection portion 8a extends outward through the through hole 1e to facilitate connection. It is noted that a silicon photocell may be mounted on the PCB board 8 for power supply.
The light-emitting element used for emitting light and the photosensitive element used for sensing light are arranged on the PCB 8, wherein the light-emitting element is a light-emitting diode, the photosensitive element is a photosensitive diode or a photosensitive triode or a photosensitive resistor, the photoelectric elements are mutually matched, measured parameters can be converted into optical signals, the optical signals are converted into electric signals to be output, and the LED light-emitting module is low in cost, stable, reliable and high in accuracy.
Referring to fig. 2 and 4, a light shielding sheet 9 capable of shielding light is installed on one end of the motor shaft 2 near the second bearing 6 after passing through the PCB 8, and the light shielding sheet 9 is fixedly sleeved on the motor shaft 2 and rotates synchronously with the motor shaft 2. In addition, the light shielding sheet 9 is provided with a plurality of light holes 9a for transmitting light. Specifically, the two light transmission holes 9a are fan-shaped and are arranged to face each other with the motor shaft 2 as an axis of symmetry. Accordingly, the light emitting element and the light sensitive element are oppositely arranged with the motor shaft 2 as the axis of symmetry. Such a design greatly improves the accuracy of the feedback of the rotation angle of the motor shaft 2 (rotor coil).
If the light-shielding sheet 9 completely shields the light-emitting element or the photosensitive element, the light cannot irradiate the photosensitive element, and the current is very small; when the light-shielding sheet 9 does not shield the light-emitting element and the photosensitive element, light can be irradiated onto the photosensitive element to generate photocurrent; the photocurrent is in direct proportion to the illumination intensity, and the rotating position of the light shielding sheet 9 can be obtained through output voltage, so that the rotating angle of the motor shaft 2 (rotor coil) is fed back.
Referring to fig. 1 and 2, a galvanometer system includes a galvanometer 10 and the galvanometer motor with high response speed, the galvanometer 10 is installed at one end of the motor shaft 2 and can be driven by the motor shaft 2 to rotate.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.
Claims (10)
1. A high response speed galvanometer motor comprising:
a housing;
the motor shaft, its at least one end is passed through the said body;
the rotor coil is positioned in the shell, sleeved on the motor shaft and used for driving the motor shaft to rotate;
the method is characterized in that:
the rotor coil is a hollow cup coil formed by winding an oxygen-free copper enameled wire, the central axis of the hollow cup coil is overlapped with the rotation axis of the motor shaft, a plurality of magnetic steel sheets made of permanent magnetic materials are arranged on the inner side wall of the shell, and the magnetic steel sheets are circumferentially distributed around the hollow cup coil.
2. The high response speed galvanometer motor of claim 1, wherein: the magnetic steel sheets are of a sheet structure with a fan-shaped cross section, magnetic steel sheet mounting holes matched with the corresponding magnetic steel sheets are formed in the side wall of the shell, and the magnetic steel sheets are respectively embedded in the corresponding mounting holes and fixed through glue.
3. The high response speed galvanometer motor of claim 2, wherein: the casing is including being cylindrical casing main part and closing first end cover and the second end cover at casing main part both ends respectively, and each mounting hole distributes on casing main part along circumference, first end cover is worn out to the one end of motor shaft.
4. The high response speed galvanometer motor of claim 3, characterized by: the motor shaft is provided with a first bearing and a second bearing, the hollow cup coil is positioned between the first bearing and the second bearing, the first bearing is supported between the first end cover and the motor shaft, the second bearing is supported between the shell body and the motor shaft, and the shell body, the second end cover and the second bearing are encircled to form a feedback device installation cavity.
5. The high response speed galvanometer motor of claim 4, wherein: the feedback device is characterized in that a PCB is arranged in the feedback device installation cavity, a light-emitting element used for emitting light and a photosensitive element used for sensing light are arranged on the PCB, a shading sheet capable of shading light is installed after one end of the motor shaft close to the second bearing penetrates through the PCB, and a plurality of light holes used for light transmission are formed in the shading sheet.
6. The high response speed galvanometer motor of claim 5, wherein: the light-emitting element and the photosensitive element are arranged oppositely by taking the motor shaft as a symmetrical axis, and the number of the light holes is two, the light holes are fan-shaped, and the light holes are arranged oppositely by taking the motor shaft as a symmetrical axis.
7. The high response speed galvanometer motor of claim 5, wherein: the inner surface of the second end cover is a rough surface.
8. The high response speed galvanometer motor of claim 5, wherein: the light-emitting element is a light-emitting diode, and the photosensitive element is a photosensitive diode or a photosensitive triode or a photosensitive resistor.
9. The high response speed galvanometer motor of claim 1, wherein: the magnetic steel sheet is made of rare earth permanent magnetic materials, and the shell is made of non-magnetic materials.
10. A galvanometer system, characterized by: the high response speed galvanometer motor comprises a galvanometer and the galvanometer motor of any one of claims 1 to 9, wherein the galvanometer is arranged at one end of a motor shaft and can be driven to rotate by the motor shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010251497.XA CN111245191A (en) | 2020-04-01 | 2020-04-01 | High response speed's mirror motor and mirror system that shakes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010251497.XA CN111245191A (en) | 2020-04-01 | 2020-04-01 | High response speed's mirror motor and mirror system that shakes |
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| Publication Number | Publication Date |
|---|---|
| CN111245191A true CN111245191A (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010251497.XA Pending CN111245191A (en) | 2020-04-01 | 2020-04-01 | High response speed's mirror motor and mirror system that shakes |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115113363A (en) * | 2022-08-26 | 2022-09-27 | 北京瑞控信科技股份有限公司 | High-performance moving-coil type flexible support galvanometer |
-
2020
- 2020-04-01 CN CN202010251497.XA patent/CN111245191A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115113363A (en) * | 2022-08-26 | 2022-09-27 | 北京瑞控信科技股份有限公司 | High-performance moving-coil type flexible support galvanometer |
| CN115113363B (en) * | 2022-08-26 | 2022-12-09 | 北京瑞控信科技股份有限公司 | Moving-coil flexible support galvanometer |
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