Angle deflection structure with tooth poles and deflection mirror device thereof

Abstract

The invention discloses an angle deflection structure with tooth poles and a deflection mirror device thereof, the angle deflection structure comprises a rotor assembly and a stator assembly, the rotor assembly is composed of a rotating shaft and at least two permanent magnets with adjacent staggered poles, and the stator assembly comprises a stator ring, two first tooth poles and two second tooth poles. The first tooth poles and the second tooth poles are evenly arranged in the stator ring at intervals in a pairwise opposite mode, the two ends of the oppositely-arranged first tooth poles in the length direction are provided with insulating wire frames, and coil windings are wound around the insulating wire frames and suspended on the outer sides of the permanent magnets. On the basis of four poles, the first tooth poles and the second tooth poles are arranged outside the permanent magnets, so that magnetic field lines can be better gathered and guided, the influence of the tooth poles on the torque output smoothness of the rotating shaft can be reduced as much as possible, air gaps around the permanent magnets are reduced to about 0.3 mm, and the torque output smoothness of the rotating shaft is improved. Therefore, the same performance as that of the existing structure can be achieved by using a weaker magnet and fewer coils.

Description

Technical Field

[0001] The invention relates to the field of deflection structures, and in particular to an angle deflection structure with tooth poles and a deflection mirror device thereof. Background Art

[0002] The angle deflection structure is a structural design that uses an electromagnetic field to drive the shaft to deflect within a certain angle. It has a wide range of applications, including large-scale laser processing equipment, high-speed laser engraving machines, etc.

[0003] In the existing field, a rotating shaft is usually made of magnets, and then a wrapping body and a coil are set on the outside of the rotating shaft. The coil is controlled on the outside of the rotating shaft by colloid. After power is turned on, the magnetic field drives the rotating shaft to rotate. Since there is no tooth groove, the torque output of the rotating shaft is smoother, and more accurate angle positioning and speed control can be achieved. In the galvanometer system, this is crucial for accurately reflecting the laser beam or light beam to the specified position.

[0004] However, precisely because there are no teeth, the air gap between the inclusion and the magnet in the above solution is too large (usually greater than 1.15mm), resulting in a weak magnetic field, so more coils and stronger magnets are required. As a result, the weight and volume of the product cannot be very small; at the same time, from the perspective of the magnetic field loop, the existing structure has only two magnetic field loops, commonly known as the "two-stage" structure. Due to the small number of magnetic poles, the magnetic field changes drastically and the speed is high, but this high speed may bring certain challenges in some application scenarios with high requirements for speed stability, such as speed fluctuations. In addition, in the closed-loop feedback control process in the galvanometer field, the two-pole structure cannot accurately respond to changes in the position signal and cannot achieve higher angle control accuracy. Summary of the invention

[0005] In order to solve the above-mentioned problems, the present invention provides an angle deflection structure with tooth poles, including a rotor assembly and a stator assembly, wherein the rotor assembly is composed of a rotating shaft and at least two adjacent permanent magnets with staggered poles, the permanent magnets are sleeved on the rotating shaft, and the stator assembly includes a stator ring and two slotless first tooth poles and second tooth poles extending along the end face ring center of the stator ring, the first tooth poles and the second tooth poles are evenly spaced in the stator ring and arranged opposite to each other, the rotor assembly is arranged between the first tooth poles and the second tooth poles, and insulating wire frames are arranged at both ends of the first tooth poles in the length direction, the insulating wire frame partially wraps the first tooth pole, and a coil winding is wound on the insulating wire frame and the coil winding is suspended outside the permanent magnet.

[0006] Furthermore, the insulating wire frame includes a first contact surface and a second contact surface that enclose a semi-open space, the first contact surface abuts against the end surfaces of the two ends of the first tooth pole, the second contact surface at least partially wraps the two sides of the first tooth pole, the coil winding is wound around the first contact surface and the second contact surface, and a first limiting portion is provided at one end of the first contact surface and the second contact surface adjacent to the permanent magnet.

[0007] Furthermore, a third contact surface is extended outward from the second contact surface, the third contact surface is in contact with the inner wall of the stator ring, an angle is formed between the third contact surface and the second contact surface, and the distance between the angles is smaller than the distance between the second contact surfaces.

[0008] Furthermore, a second limiting portion is provided on the end surfaces of the second contact surface and the third contact surface.

[0009] Furthermore, positioning grooves are arranged on the stator ring, and protrusions matching the positioning grooves are arranged on the second tooth pole. The protrusions and the positioning grooves are used for detachable connection between the stator ring and the second tooth pole.

[0010] Furthermore, the stator ring is formed by stacking and stamping sheets, and the material of the permanent magnet is neodymium iron boron.

[0011] At the same time, the present application also provides a deflecting mirror device, including a shell wrapped around the stator ring, the shell and the stator ring are fixed by laser welding, a front cover and a rear cover are arranged at both ends of the shell, a support shaft is fixed to one end of the rotating shaft, a clamping portion is arranged at the end of the support shaft away from the rotating shaft, the support shaft passes through the front cover so that its clamping portion extends out of the front cover, and a control component is arranged on the side of the rear cover away from the stator assembly.

[0012] Furthermore, a first channel is provided in the front cover, the support shaft passes through the first channel, a first bearing is provided between the first channel and the support shaft, the outer ring and the inner ring of the first bearing are loosely fitted with the inner wall of the first channel and the outer wall of the support shaft respectively, and limiting steps are provided on the support shaft and the first channel to prevent the first bearing from moving on the axis.

[0013] Furthermore, a second channel is provided in the rear cover, the rotating shaft passes through the second channel, a second bearing is provided between the second channel and the rotating shaft, the outer ring and the inner ring of the second bearing are loosely fitted with the inner wall of the second channel and the outer wall of the rotating shaft respectively, and a positioning ring and an elastic gasket are provided at both axial ends of the second bearing respectively, the elastic gasket is pre-pressed on one side of the second bearing, and the positioning ring and the elastic gasket are used to prevent the second bearing from moving on the axis.

[0014] Furthermore, the control component includes a solid control circuit board, which is electrically connected to the coil winding. A first gasket is covered on the side of the control circuit board away from the back cover, and a plurality of light guide grids are arranged on the first gasket. A light blocking sheet for shielding the light guide grids is arranged on the outer side of the first gasket, and the rotating shaft passes through the first gasket. The light blocking sheet is fixed on the rotating shaft and rotates synchronously with the rotating shaft.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The number of magnetic poles in this application is changed from 2 to 4, the magnetic field changes relatively smoothly, the rotation speed is relatively more stable, and a relatively uniform speed output can be maintained during operation, which is very important for the galvanometer system that needs to accurately control the deflection angle and position of the optical path. For example, in the field of laser precision processing, a stable rotation speed can ensure that the laser beam accurately irradiates the target position and improves the processing accuracy.

[0016] 2. In addition, the rotation speed of the present application is relatively low and stable, and in the closed-loop feedback control process, it can respond more accurately to changes in the position signal, thereby achieving higher angle control accuracy. In applications that require high-precision optical path control, such as laser medical treatment, semiconductor lithography, etc., it can better meet the requirements for precise control of the deflection angle of optical elements and improve the processing accuracy and performance of the equipment.

[0017] 3. At the same time, on the basis of 4 poles, a slotless first tooth pole and a second tooth pole are arranged on the outside of the permanent magnet, and the coil winding is suspended on the outside of the permanent magnet through an insulating wire frame, so as to achieve better gathering and guiding of the magnetic field lines. At the same time, the slotless tooth pole can minimize the influence of the tooth pole torque on the torque output smoothness of the shaft, and at the same time, the air gap around the permanent magnet is reduced from more than 1.15mm in the prior art to about 0.3mm, so that the same performance as the existing galvanometer motor can be achieved with weaker magnets and fewer coils, so that the entire product can be miniaturized and lightweight on the basis of unchanged or even improved performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the related structure of the prior art of the present invention; Figure 2 It is a schematic diagram of the overall structure of the angle deflection structure with tooth poles of the present invention; Figure 3 It is an exploded view of the overall structure of the angle deflection structure with tooth poles of the present invention; Figure 4 It is a schematic diagram of the magnetic circuit of the present invention; Figure 5 It is a structural schematic diagram of the insulating wire rack of the present invention; Figure 6 It is a structural schematic diagram of a stator assembly of the present invention; Figure 7 is a schematic structural diagram of a deflecting mirror device of the present invention; Figure 8 is a structural cross-sectional view of the deflecting mirror device of the present invention; Fig. 9 is a structural exploded view of the control assembly of the present invention; Fig.10 It is a schematic diagram of the assembly between the rotating shaft and the permanent magnet of the present invention.

[0020] The reference numerals and names in the figures are as follows: The encapsulation body 10, the coil 20, the colloid 30, the rotor assembly 100, the stator assembly 200, the rotating shaft 110, the permanent magnet 120, the stator ring 210, the first tooth pole 220, the second tooth pole 230, the insulating wire frame 300, the coil winding 400, the first contact surface 310, the second contact surface 320, the first limiting portion 311, the third contact surface 330, the angle 321, the second limiting portion 331, the positioning groove 221, the protrusion 231, the shell 500, the front cover 510, the rear cover 520, the support shaft 111, the clamping portion 112, the first channel 511, the first bearing 530, the limiting step 512, the second channel 521, the second bearing 540, the positioning ring 522, the elastic gasket 523, the control assembly 600, the control circuit board 610, the first gasket 620, the light guide grid 621, and the light blocking film 630. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The present invention is described in more detail. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween.

[0023] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, vertical, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself. In the description of the present invention, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above words have no special meaning, and therefore cannot be understood as limiting the scope of protection of the present invention. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0024] The preferred embodiments of the present invention will now be further described in conjunction with the accompanying drawings. Figure 1 As shown, the existing angle deflection structure usually adopts a rotating shaft 110 made of a magnet, and then an enclosure 10 and a coil 20 are arranged on the outside of the rotating shaft 110, and the coil 20 is controlled on the outside of the rotating shaft 110 by using a colloid 30. After power is turned on, the magnetic field drives the rotating shaft 110 to rotate, and from the above-mentioned magnetic field circuit, the existing structure has only two magnetic field circuits, which is commonly known as a "two-stage" toothless structure.

[0025] At least one embodiment of the present application provides an angle deflection structure with tooth poles, such as Figures 2 to 3 As shown, it includes a rotor assembly 100 and a stator assembly 200. Fig.10As shown, the rotor assembly 100 is composed of a rotating shaft 110 and at least two adjacent permanent magnets 120 with staggered poles, the permanent magnets 120 are sleeved on the rotating shaft 110, the stator assembly 200 includes a stator ring 210 and two slotless first tooth poles 220 and second tooth poles 230 extending along the end face ring center of the stator ring 210, the first tooth poles 220 and the second tooth poles 230 are evenly spaced in the stator ring 210 and arranged opposite to each other, the rotor assembly 100 is arranged between the first tooth poles 220 and the second tooth poles 230, and insulating wire frames 300 are arranged at both ends of the first tooth poles 220 arranged opposite to each other in the length direction, the insulating wire frame 300 partially wraps the first tooth pole 220, and the coil winding 400 is wound on the insulating wire frame 300 and the coil winding 400 is suspended outside the permanent magnet 120.

[0026] In the above embodiment, since the rotor assembly 100 is composed of a rotating shaft 110 and at least two permanent magnets 120 with staggered poles, the permanent magnet 120 is sleeved on the rotating shaft 110, and a coil winding 400 is suspended on the outer side of the permanent magnet 120, when the coil winding 400 is energized, the permanent magnet 120 covering the rotating shaft 110 will generate opposite polarities at adjacent ends, and the rotating shaft 110 will be driven to rotate between the first tooth pole 220 and the second tooth pole 230 under the effect of the magnetic field.

[0027] From the above embodiments, it can be seen that the present application utilizes at least two adjacent staggered-pole permanent magnets 120, and then uses the coil winding 400 suspended outside the permanent magnet 120 to energize so that the polarities of the adjacent ends of the permanent magnet 120 are opposite, thereby forming four magnetic field loops. Compared with the prior art, Figure 4 As shown, the number of magnetic poles in the present application is changed from 2 to 4, the magnetic field changes relatively smoothly, the rotation speed is relatively more stable, and a relatively uniform speed output can be maintained during operation. At the same time, on the basis of 4 poles, a slotless first tooth pole 220 and a second tooth pole 230 are provided on the outside of the permanent magnet 120, and the coil winding is suspended on the outside of the permanent magnet 120 through an insulating wire frame 300, so that the magnetic field lines are better gathered and guided. At the same time, the slotless tooth pole can minimize the influence of the tooth pole torque on the torque output smoothness of the rotating shaft 110, and at the same time, the air gap around the permanent magnet 120 is reduced from more than 1.15 mm in the prior art to about 0.3 mm, so that the same performance as the existing galvanometer motor can be achieved with a weaker magnet and fewer coils, so that the entire product can be miniaturized and lightweight on the basis of unchanged or even improved performance.

[0028] On the basis of the above embodiments, Figure 5As shown, the insulating wire frame 300 includes a first contact surface 310 and a second contact surface 320 that enclose a semi-open space, the first contact surface 310 abuts against the end surfaces of the two ends of the first tooth pole 220, and the second contact surface 320 at least partially wraps the two sides of the first tooth pole 220, the coil winding 400 is wound on the first contact surface 310 and the second contact surface 320, and a first limiting portion 311 is provided at one end of the first contact surface 310 and the second contact surface 320 adjacent to the permanent magnet 120, when the coil winding 400 is wound around the first contact surface 310 and the second contact surface 320, the first limiting portion 311 can prevent the coil winding 400 from moving toward the permanent magnet 120, so that the coil winding 400 is suspended on the outside of the permanent magnet 120.

[0029] On the basis of the above embodiments, Figure 2 and Figure 5 As shown, the third contact surface 330 is extended outward from the second contact surface 320, and the third contact surface 330 is in contact with the inner wall of the stator ring 210, so that an angle 321 is formed between the third contact surface 330 and the second contact surface 320, and the distance between the angles 321 is smaller than the distance between the second contact surfaces 320. In this way, when the insulating wire frame 300 and the first tooth pole 220 are assembled, an interference fit is formed between the second contact surface 320 and the first tooth pole 220, so that the installation between the insulating wire frame 300 and the first tooth pole 220 can be more firmly compared with simply reducing the width of the second contact surface 320.

[0030] In some embodiments, in combination Figure 2 and Figure 5 As shown, a second limiting portion 331 is provided on the end surfaces of the second contact surface 320 and the third contact surface 330. When the insulating wire frame 300 is assembled into the first tooth pole 220, the second limiting portion 331 limits the installation of the insulating wire frame 300 along the length of the first tooth pole 220 to prevent the insulating wire frame 300 from being too close to the inside of the stator ring 210 and being inconvenient to remove.

[0031] On the basis of the above embodiments, Figure 6As shown, positioning grooves 221 are relatively arranged on the stator ring 210, and protrusions 231 matching the positioning grooves 221 are arranged on the second tooth pole 230. The second tooth pole 230 is connected to the stator ring 210 by the clamping of the protrusion 231 and the positioning groove 221, so that the installation of the insulating wire frame 300 and the winding operation on the insulating wire frame 300 can be more convenient. Specifically, when assembling the present application, the second tooth pole 230 is first removed from the stator ring 210 to leave enough operating space in the stator ring 210, and then the insulating wire frame 300 is installed on the first tooth pole 220 and the coil winding 400 is wound on the insulating wire frame 300. After completing the above work, the second tooth pole 230 is installed on the stator ring 210.

[0032] On the basis of the above-mentioned embodiment, the stator ring 210 is formed by stacking and stamping sheets, so that the magnetic circuit can be controlled more accurately and the magnetic field distribution can be more uniform. This helps to improve the electromagnetic conversion efficiency and reduce the impact of magnetic field distortion on performance. In some embodiments, the material of the permanent magnet 120 is neodymium iron boron, which has an extremely high magnetic energy product and can generate a stronger magnetic field at the same volume. This means that in the use environment of this application, the use of neodymium iron boron magnets can enable the motor to obtain a larger magnetic force in a smaller space, thereby improving the power density and efficiency of the motor, which helps the miniaturization and high performance of this application.

[0033] The present application also discloses a deflection mirror device applied to the above-mentioned angle deflection structure with tooth poles, such as Figure 7 As shown, it includes a shell 500 wrapped around the stator ring 210, and the shell 500 is fixed to the stator ring 210 by laser welding. A front cover 510 and a rear cover 520 are arranged at both ends of the shell 500. A support shaft 111 is fixed to one end of the rotating shaft 110, and a clamping portion 112 is arranged at the end of the support shaft 111 away from the rotating shaft 110. The clamping portion 112 can clamp different functional components according to different application scenarios of the present structure. For example, in the present application, the clamping portion 112 is used to clamp an optical lens in a galvanometer system. The support shaft 111 passes through the front cover 510 so that the clamping portion 112 extends out of the front cover 510, and a control component 600 is arranged on the side of the rear cover 520 away from the stator assembly 200.

[0034] On the basis of the above embodiments, Figure 7 and Figure 8As shown, a first channel 511 is provided in the front cover 510, the support shaft 111 passes through the first channel 511, and a first bearing 530 is provided between the first channel 511 and the support shaft 111, and the outer ring and the inner ring of the first bearing 530 are loosely fitted with the inner wall of the first channel 511 and the outer wall of the support shaft 111 respectively, so that when the rotating shaft 110 rotates, its radial movement depends on the radial runout accuracy of the first bearing 530, eliminating the influence of other factors (such as processing accuracy), so that the radial movement of the rotating shaft 110 is more controllable. Preferably, in some embodiments, a limiting step 512 is provided on the support shaft 111 and the first channel 511 to prevent the first bearing 530 from axial movement.

[0035] On the basis of the above embodiments, Figure 7 and Figure 8 As shown, a second channel 521 is provided in the rear cover 520, and the rotating shaft 110 passes through the second channel 521. A second bearing 540 is provided between the second channel 521 and the rotating shaft 110. The outer ring and the inner ring of the second bearing 540 are loosely fitted with the inner wall of the second channel 521 and the outer wall of the rotating shaft 110 respectively, so that when the rotating shaft 110 rotates, its radial movement depends on the radial runout accuracy of the first bearing 530, eliminating the influence of other factors (such as processing accuracy), so that the radial movement of the rotating shaft 110 is more controllable. In some implementations, a positioning ring 522 and an elastic gasket 523 are respectively provided at both axial ends of the second bearing 540, and the elastic gasket 523 is pre-pressed on one side of the second bearing 540. The positioning ring 522 and the elastic gasket 523 are used to prevent the second bearing 540 from axial movement.

[0036] On the basis of the above embodiments, Fig. 9 As shown, the control component 600 includes a control circuit board 610, which is electrically connected to the coil winding 400. A first gasket 620 is covered on the side of the control circuit board 610 away from the back cover 520. A plurality of light-guiding gratings 621 are arranged on the first gasket 620. A light-blocking sheet 630 for shielding the light-guiding gratings 621 is arranged on the outer side of the first gasket 620. The rotating shaft 110 passes through the first gasket 620. The light-blocking sheet 630 is fixed on the rotating shaft 110 and rotates synchronously with the rotating shaft 110.

[0037] The details of the exemplary embodiments described above are not limited to the embodiments described above, and the invention may be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive in all respects, and the scope of the invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the invention.

Claims

1. An angle deflection structure with tooth poles, comprising a rotor assembly (100) and a stator assembly (200), characterized in that: The rotor assembly (100) comprises a rotating shaft (110) and at least two adjacent staggered-pole permanent magnets (120), wherein the permanent magnets (120) are sleeved on the rotating shaft (110), and the stator assembly (200) comprises a stator ring (210) and two slotless first tooth poles (220) and second tooth poles (230) extending along the end face ring center of the stator ring (210), wherein the first tooth poles (220) and the second tooth poles (230) are uniformly spaced in the stator ring (210). The rotor components (100) are arranged in pairs and spaced apart from each other, the rotor component (100) is arranged between the first tooth pole (220) and the second tooth pole (230), and insulating wire frames (300) are arranged at both ends of the first tooth poles (220) arranged opposite to each other in the length direction, the insulating wire frames (300) partially wrap the first tooth poles (220), and a coil winding (400) is wound on the insulating wire frame (300) so that the coil winding (400) is suspended outside the permanent magnet (120).

2. The angle deflection structure with tooth poles according to claim 1, characterized in that: The insulating wire frame (300) comprises a first contact surface (310) and a second contact surface (320) which enclose a semi-open space, the first contact surface (310) abutting against end surfaces at both ends of the first tooth pole (220), the second contact surface (320) at least partially wrapping both sides of the first tooth pole (220), the coil winding (400) being wound on the first contact surface (310) and the second contact surface (320), and a first limiting portion (311) being provided at one end of the first contact surface (310) and the second contact surface (320) adjacent to the permanent magnet (120).

3. The angle deflection structure with tooth poles according to claim 2, characterized in that: A third contact surface (330) is extended outward from the second contact surface (320), the third contact surface (330) and the inner wall of the stator ring (210) are mutually fitted, an angle (321) is formed between the third contact surface (330) and the second contact surface (320), and the distance between the angles (321) is smaller than the distance between the second contact surfaces (320).

4. The angle deflection structure with tooth poles according to claim 3, characterized in that: A second limiting portion (331) is provided on the end surfaces of the second contact surface (320) and the third contact surface (330).

5. The angle deflection structure with tooth poles according to claim 1, characterized in that: Positioning grooves (221) are arranged opposite to each other on the stator ring (210), and protrusions (231) matching the positioning grooves (221) are arranged on the second tooth pole (230), wherein the protrusions (231) and the positioning grooves (221) are used for the connection between the stator ring (210) and the second tooth pole (230) for disassembly.

6. The angle deflection structure with tooth poles according to claim 1, characterized in that: The stator ring (210) is formed by laminating and stamping sheets, and the material of the permanent magnet (120) is neodymium iron boron.

7. A deflecting mirror device, characterized in that: The invention comprises the angle deflection structure with tooth poles as claimed in any one of claims 1 to 6.

8. The deflecting mirror arrangement according to claim 7, characterized in that The invention comprises a shell (500) wrapped around a stator ring (210), a front cover (510) and a rear cover (520) being arranged at both ends of the shell (500), a support shaft (111) being fixed to one end of the rotating shaft (110), a clamping portion (112) being arranged at one end of the supporting shaft (111) away from the rotating shaft (110), the supporting shaft (111) passing through the front cover (510) so that the clamping portion (112) protrudes out of the front cover (510), and a control component (600) being arranged on a side of the rear cover (520) away from the stator component (200).

9. The deflecting mirror arrangement according to claim 8, characterized in that A first channel (511) is provided in the front cover (510), the support shaft (111) passes through the first channel (511), a first bearing (530) is provided between the first channel (511) and the support shaft (111), an outer ring and an inner ring of the first bearing (530) are loosely fitted to an inner wall of the first channel (511) and an outer wall of the support shaft (111), respectively, and a limiting step (512) is provided on the support shaft (111) and the first channel (511) to prevent the first bearing (530) from moving on the axis.

10. The deflecting mirror device according to claim 8, characterized in that A second channel (521) is provided in the rear cover (520), the rotating shaft (110) passes through the second channel (521), a second bearing (540) is provided between the second channel (521) and the rotating shaft (110), an outer ring and an inner ring of the second bearing (540) are loosely fitted with an inner wall of the second channel (521) and an outer wall of the rotating shaft (110) respectively, a positioning ring (522) and an elastic gasket (523) are provided at two axial ends of the second bearing (540), the elastic gasket (523) is pre-pressed on one side of the second bearing (540), and the positioning ring (522) and the elastic gasket (523) are used to prevent the second bearing (540) from moving on the axis.

11. The deflecting mirror device according to claim 8, characterized in that The control component (600) comprises a control circuit board (610), the control circuit board (610) being electrically connected to the coil winding (400); a first gasket (620) is covered on a side of the control circuit board (610) away from the rear cover (520); a plurality of light guide grids (621) are arranged on the first gasket (620); a light shielding sheet (630) for shielding the light guide grids (621) is arranged on the outer side of the first gasket (620); the rotating shaft (110) passes through the first gasket (620); and the light shielding sheet (630) is fixed on the rotating shaft (110) and rotates synchronously with the rotating shaft (110).

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