CN115566861A - Mirror motor shakes - Google Patents

Abstract

The application relates to a galvanometer motor which comprises a wire control unit, a shell unit and a lens unit which are sequentially connected, wherein the shell unit comprises a shell, one end of the shell is connected with a PCB bearing seat, and the other end of the shell is connected with a lens bearing seat; the inner part of the shell is provided with a winding and a rotor assembly, the rotor assembly comprises a rotating shaft and a limiting transverse shaft which radially penetrates through the rotating shaft, two ends of the rotating shaft are respectively and rotatably fixed on the shell unit through a first bearing and a second bearing, the limiting transverse shaft and the first bearing are accommodated in a bearing seat of the PCB, and the second bearing is accommodated in a bearing seat of the lens; the shell is connected with the PCB bearing seat through a first connecting part; the shell is connected with the lens bearing seat through a second connecting part. The housing unit of the galvanometer motor that this application embodiment provided is split type structure, and PCB board bearing frame, the lens bearing frame that constitute housing unit are connected with the stability of casing, the concentricity is good respectively, can prevent effectively that circumferential direction from rotating, and the swing angle of lens is more accurate.

Description

Mirror motor shakes

Technical Field

The application relates to the technical field of galvanometer scanning, in particular to a galvanometer motor.

Background

Lidar is an indispensable detection and sensing component for unmanned driving. The laser radar can be used for object detection and avoidance, object identification and tracking, timely positioning, map construction and the like. The galvanometer motor is used as a core component of the laser radar and has an important position in the laser radar.

In the course of the work, the mirror motor that shakes realizes the light beam manipulation of laser radar transmitting terminal through the rotation of the lens of control rather than being connected of pivot output, the irradiation range of light beam is relevant with the turned angle of mirror that shakes, therefore, the mirror motor that shakes is as laser beam's scanning element, need ensure the concentricity of its each spare part when the installation cooperation and the accuracy of relative position, thereby ensure that the swing angle of mirror that shakes is unanimous with the turned angle of motor shaft, but, at present, the shell of most mirror motor that shakes all is the integral type structure, in the assembling process, because the length of integral type shell is longer, the degree of difficulty of guaranteeing the concentricity at the in-process of assembly is relatively great, need adopt complicated assembly process, low in production efficiency, in addition, integral type shell structure is complicated, the part processing makes the degree of difficulty big, and is with high costs. Therefore, it is desirable to provide a new galvanometer motor.

Disclosure of Invention

To the technical problem who exists among the prior art, this application has provided a mirror motor shakes, and this mirror motor shakes reduces the assembly process degree of difficulty of mirror motor shakes through carrying out the components of a whole that can function independently design with PCB board bearing frame, lens bearing frame and casing, improves production efficiency.

The embodiment of the application provides a vibrating mirror motor which comprises a drive-by-wire unit, a shell unit and a lens unit which are sequentially connected, and is characterized in that the shell unit comprises a shell, one end of the shell is connected with a PCB bearing seat, and the other end of the shell is connected with a lens bearing seat; the inner part of the shell is provided with a winding and a rotor assembly, the rotor assembly comprises a rotating shaft and a limiting transverse shaft which radially penetrates through the rotating shaft, two ends of the rotating shaft are respectively and rotatably fixed on the shell unit through a first bearing and a second bearing, the limiting transverse shaft and the first bearing are accommodated in a bearing seat of the PCB, and the second bearing is accommodated in a bearing seat of the lens; the shell is connected with the PCB bearing seat through a first connecting part; the shell is connected with the lens bearing seat through a second connecting part.

Optionally, a fixing plate is convexly arranged on the outer side of the casing along the tangential direction of the periphery, and a fixing hole for connecting with an external device is formed in the fixing plate.

Optionally, the PCB board bearing seat includes a first cylinder and a second cylinder connected to each other, a cross-sectional area of the first cylinder is larger than a cross-sectional area of the second cylinder, the first cylinder is connected to a PCB board disposed in the PCB board bearing seat, and an outer side surface of the second cylinder is connected to an inner wall of the rear port of the chassis.

Optionally, the first connecting portion includes a first groove and a first rib, the first groove is formed along an axial direction of the outer side surface of the first cylinder, the first rib extends along an axial direction of an edge of the rear port of the housing, a position of the first rib corresponds to a position of the first groove, and the first rib is clamped in the first groove and used for fixing the PCB bearing block on the housing.

Optionally, the number of the first clamping grooves is multiple, and the multiple first clamping grooves are symmetrically distributed along the circumferential direction of the first cylinder.

Optionally, the first rib is fixedly connected with the first groove in a riveting manner.

Optionally, the second connecting portion includes a second groove and a second rib, a flange is circumferentially disposed on an outer side surface of the lens bearing seat, the second groove is axially formed along a side surface of the flange, the second rib is axially formed along a front end of the housing, a position of the second rib corresponds to a position of the second groove, and the second rib is clamped in the second groove and used for fixing the lens bearing seat on the housing.

Optionally, the number of the second clamping grooves is multiple, and the multiple second clamping grooves are symmetrically distributed along the circumferential direction of the flange.

Optionally, the second protruding rib is fixedly connected with the second clamping groove in a riveting manner.

Optionally, after riveting, a contact surface of the first rib and the first clamping groove or a contact surface of the second rib and the second clamping groove is bent by no more than 1.5mm along the length direction, and the contact surface is inclined by no less than 45 degrees towards the inside of the housing.

Optionally, the second bearing and the lens bearing seat are fixedly connected in an interference fit manner, and the interference magnitude is 0.01-0.05.

Optionally, a wave washer is sleeved on the rotating shaft between the limiting shaft and the first bearing, the wave washer is clamped on the inner wall of the bearing chamber, and the bearing chamber is an accommodating cavity for accommodating the first bearing on the PCB bearing seat.

Optionally, the opening of the wave washer is closed in an overlapping manner to form an overlapping portion, and the outer diameter of the wave washer is larger than the diameter of the inner wall of the bearing chamber.

Optionally, the effective overlapping amount of the overlapping part is 2-3 mm, and the outer diameter of the wave washer is 0.1-0.5 mm larger than the diameter of the inner wall of the bearing chamber.

Optionally, the material of the casing is a metallic soft magnetic material.

In the embodiment of the application, the PCB bearing seat, the casing and the lens bearing seat are designed in a split mode, and under the condition that the relative positions among the PCB bearing seat, the lens bearing seat and the rotor assembly are determined, the accuracy of the relative position between the casing and the lens unit of the galvanometer motor can be realized by simply adjusting the positions of the casing and the PCB bearing seat. Compare in the assembly process of integral type casing mirror motor that shakes, the assembly process of the mirror motor that shakes that this application provided reduces, and productivity ratio can improve to, PCB board bearing frame, casing, lens bearing frame are the components of a whole that can function independently design, can also reduce the processing degree of difficulty of spare part, reduce the processing cost.

Drawings

Preferred embodiments of the present application will now be described in further detail with reference to the accompanying drawings, in which:

fig. 1 is a schematic perspective view of a galvanometer motor according to an embodiment of the present disclosure; (ii) a

FIG. 2 is a schematic perspective view of a sub-assembly of a galvanometer motor including a drive-by-wire unit and a housing unit;

FIG. 3 isbase:Sub>A sectional view taken along line A-A of FIG. 2;

fig. 4 is a schematic perspective view of a bearing seat of a PCB according to an embodiment of the present application;

fig. 5 is an exploded view of a connection structure of a bearing seat and a rotating shaft of a PCB according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a wave washer according to an embodiment of the present application;

fig. 7 is a schematic perspective view of a housing according to an embodiment of the present application;

FIG. 8 is a perspective view of a lens carrier according to an embodiment of the present application;

FIG. 9 is a schematic view of a lens unit according to an embodiment of the present application; and

fig. 10 is a schematic structural view of the lens holder of fig. 9.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the following detailed description, reference is made to the accompanying drawings that form a part hereof and in which is shown by way of illustration specific embodiments of the application. In the drawings, like numerals describe substantially similar components throughout the different views. Various specific embodiments of the present application are described in sufficient detail to enable those skilled in the art, having the benefit of this disclosure, to practice the subject application. It is to be understood that other embodiments may be utilized and structural, logical or electrical changes may be made to the embodiments of the present application.

Fig. 1 is a schematic perspective view of a galvanometer motor according to an embodiment of the present disclosure. As shown in fig. 1, the galvanometer motor 100 includes a line control unit 101, a housing unit 102 and a lens unit 103, which are connected in sequence, wherein the line control unit 101 is used for controlling the rotation of the galvanometer motor, a rotor assembly and a stator assembly are arranged inside the housing unit 102, and a lens 104 on the lens unit 103 is used for manipulating a light beam at a transmitting end of a laser radar. Fig. 2 is a schematic perspective view of a sub-assembly of the galvanometer motor including a drive-by-wire unit and a housing unit. Fig. 3 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 2. Referring to fig. 2 and 3, the housing unit 102 includes a casing 200, one end of the casing 200 is connected to a PCB board bearing seat 201, and the other end is connected to a lens bearing seat 202, and the casing 200 is provided with a winding (not shown) and a rotor assembly inside. In some embodiments, optionally, the material of the casing is a metallic soft magnetic material. The rotor assembly comprises a rotating shaft 203 and a limiting transverse shaft 204 radially penetrating through the rotating shaft 203, two ends of the rotating shaft 203 are respectively fixed on the housing unit 102 through a first bearing 205 and a second bearing 206, the limiting transverse shaft 204 and the first bearing 205 are accommodated in the PCB bearing seat 201, and the second bearing 206 is accommodated in the lens bearing seat 202.

In the embodiment of the application, the PCB bearing seat, the shell and the lens bearing seat are designed in a split mode, so that when parts in the vibrating mirror motor are installed and assembled, under the condition that the relative position between the PCB bearing seat, the lens bearing seat and the rotor assembly is determined, the accuracy of the relative position between the vibrating mirror motor shell and the lens unit can be achieved through a mode of simply adjusting the position of the shell. In addition, because the relative positions of the PCB bearing seat, the lens bearing seat and the rotating shaft are unchanged, the concentricity of the PCB bearing seat, the lens bearing seat and the shell can be kept unchanged, and further the concentricity of parts in the galvanometer motor is improved.

As shown in fig. 2, a fixing plate 207 is protruded along a tangential direction of an outer periphery of the outer side of the casing 200, and a fixing hole 208 for connecting with an external device is opened on the fixing plate 207. The external device is connected to the galvanometer motor through a fixing plate 207, and in some embodiments, the external device may optionally include a laser emitting end. Because the galvanometer motor is used for controlling the laser beam through the lens unit, in order to enable the irradiation range of the laser beam after the laser beam is reflected by the lens in the lens unit to be within a preset range, the included angle between the fixed plate and the action surface of the lens meets the precision requirement of a certain angle, and the precision requirement is that the allowable deviation is not more than 1 degree. In the embodiment of this application, because PCB board bearing frame, casing and lens bearing frame are the components of a whole that can function independently design, so in the mirror motor assembling process that shakes, can make the both ends of casing carry out incomplete fixed connection with PCB board bearing frame and lens bearing frame earlier, later can make the contained angle of fixed plate and lens working face satisfy the requirement of predetermineeing through the mode of rotating the casing. Like this, satisfying under the requirement of concentricity, can also improve the accuracy of the angle of fixing base and lens on the casing.

Fig. 4 is a schematic perspective view of a bearing seat of a PCB according to an embodiment of the present application. As shown in fig. 4 and 3, the PCB bearing housing includes a first cylinder 301 and a second cylinder 302 connected to each other, a cross-sectional area of the first cylinder 301 is larger than a cross-sectional area of the second cylinder 302, the first cylinder 301 is connected to the PCB 209 disposed at one side of the PCB bearing housing, and an outer side 306 of the second cylinder 302 is connected to the inner wall 210 of the rear port of the cabinet 200. In some embodiments, the outer side 306 of the second post 302 is optionally a clearance fit with the inner wall 210 of the rear port of the housing 200, which facilitates fine adjustment of the housing 200 during the transfer process, resulting in a more accurate position of the housing relative to the lens in the lens unit.

Further, a groove 303 is formed in the first column 301, the groove 303 is used for accommodating the limiting transverse shaft 204 inserted on the rotating shaft 203, a bearing chamber 304 is formed in the second column 302, the bearing chamber 304 is communicated with the groove 303, the bearing chamber 304 is used for accommodating the first bearing 205 sleeved on the rotating shaft 203, and the first bearing 205 is fixedly connected with the inner wall of the bearing chamber 304 in a clearance fit manner.

In some embodiments, optionally, the rotating shaft in the bearing chamber is further sleeved with a wave washer. Fig. 5 is an exploded view of a structure for connecting a bearing seat of a PCB board and a rotating shaft according to an embodiment of the present application. Fig. 6 is a schematic structural diagram of a wave washer according to an embodiment of the present application. As shown in fig. 5 and 6, the wave washer 601 is further sleeved on the rotating shaft 203 in the bearing chamber 304, and the wave washer 601 is disposed between the limit transverse shaft 204 and the first bearing 205, that is, the wave washer 601 is sleeved on the rotating shaft 203 between the limit transverse shaft 204 and the first bearing 205. The outer ring of the wave washer 601 is clamped on the inner wall of the bearing chamber 304, and the bearing chamber 304 is a receiving chamber of the PCB bearing seat 201 for receiving the first bearing 205. Further, the opening 602 of the wave washer 601 is closed by overlapping, and the outer diameter of the wave washer 601 is larger than the diameter of the inner wall of the bearing chamber 304. During assembly, the wave washer can be clamped on the inner wall of the bearing chamber and cannot fall off, and the installation of the rotating shaft in the rotor assembly is facilitated. During operation, the wave washer bears axial load, and the overlap edge position can freely contract without affecting performance, and adverse phenomena such as clamping stagnation are avoided. In some embodiments, optionally, the overlap of the overlapping edges is 2-3 mm, and the outer diameter of the wave washer is slightly larger than the inner diameter of the bearing chamber by 0.1-0.5 mm.

Fig. 7 is a schematic perspective view of a housing according to an embodiment of the present application. Referring to fig. 4 and 7, a first locking groove 305 is formed on an outer side surface 307 of the first cylinder 301 of the PCB bearing seat 201 along an axial direction thereof, a first protruding rib 702 extending along the axial direction is formed on an edge 701 of the rear port of the housing 200, the position of the first protruding rib 702 corresponds to the position of the first locking groove 305, and the first protruding rib 702 is clamped in the first locking groove 305, so that the PCB bearing seat 201 is fixed on the housing 200. In some embodiments, the first protruding rib and the first slot are clamped in the slot by interference fit, or may be fixedly connected by adhesive bonding, so that the PCB board bearing block and the chassis are fixed together. The present application is not limited to the connection method.

In order to improve the connection performance of the PCB bearing seat and the chassis, in some embodiments of the present application, the first protruding rib 702 and the first slot 305 are optionally fixedly connected by riveting. After riveting, the first rib 702 inclines not less than 45 degrees towards the inside of the housing, the first clamping groove inclines not less than 45 degrees towards the outside of the bearing seat of the PCB, the rib is subjected to plastic deformation, and the rib is bent by 1.5mm along the length direction. The yield strength of the material needs to be overcome if detachment is required. In some embodiments, optionally, the first locking groove has a width of 3-4 mm and a depth of 3mm, and the length of the first protruding rib matched with the first locking groove is 1.5mm, the width of the first protruding rib is 2mm, and the thickness of the first protruding rib does not exceed the depth of the first locking groove. When the first rib is assembled in the first clamping groove, the first rib and two sides of the first clamping groove are provided with angle adjusting allowance. Like this, during the assembly, when first bead can block in first draw-in groove, the contact surface of the two closely laminating is in the same place, plays certain positioning action, and plastic deformation takes place for first bead under the effect of pressure in the later stage, fixes first bead firmly in first draw-in groove. And, because first bead leaves angle of adjustment's surplus with first draw-in groove both sides, the actual fitting surface on the two both sides can not laminate very tightly, the assembler can finely tune the casing around the circumference of pivot to this adjusts the angle between casing upper fixed plate and the lens, and then makes the relative position of the two more accurate, in addition, can also effectively prevent the circumferential direction of casing through this kind of connected mode, influences the precision of lens unit swing angle.

In some embodiments, optionally, the number of the first locking slots 305 on the PCB bearing seat 201 may be multiple, preferably two, and the multiple first locking slots are symmetrically distributed along the circumferential direction of the first cylinder, and correspondingly, the position and the number of the first protruding ribs 702 on the chassis 200 are correspondingly arranged corresponding to the position and the number of the first locking slots 305, so that the circumferential force of the PCB bearing seat and the chassis is more uniform.

Fig. 8 is a schematic perspective view of a lens bearing seat according to an embodiment of the present application. Referring to fig. 7, 8 and 3, a flange 801 is circumferentially disposed on an outer side surface of the lens bearing seat 202, a second locking groove 803 is axially disposed on a side surface 802 of the flange 801, a second rib 704 is axially disposed on a front port 703 of the housing 200, a position of the second rib 704 corresponds to a position of the second locking groove 803, and the second rib 704 is tightly locked in the second locking groove 803, so that the lens bearing seat 202 is fixed on the housing 200. The front port 703 of the casing is provided with an arc-shaped protrusion 705 along the edge, the arc-shaped protrusion 705 is a part of the fixing plate 207 extending along the axial direction of the casing and then exceeding the front port 703, the arc-shaped protrusion 705 is attached to the side 802 of the flange 801, and the two are assembled together.

With reference to fig. 3, a bearing chamber for accommodating the second bearing 206 is disposed inside the lens bearing seat 202, the second bearing 206 is sleeved on the rotating shaft 203 in the bearing chamber of the second bearing, an outer side surface of the second bearing 206 is fixedly connected with an inner wall 211 of the bearing chamber in an interference fit manner, a part of the outer side surface of the lens bearing seat is inserted into the casing for fixing, and in some embodiments, optionally, the outer side surface of the lens bearing seat is connected with the part of the inner wall of the casing in an interference fit manner. Similar to the connection of the first rib and the first slot, in some embodiments of the present application, the second rib 704 and the second slot 803 are clamped in the second slot 803 by interference fit, so that the lens holder 202 and the housing 200 are fixed together. In some embodiments, the second protrusion 704 is optionally fixedly connected to the second groove 803 by riveting. After riveting, the second protruding rib 704 is inclined 45 degrees towards the inside of the housing 200, the second locking groove 803 is inclined not less than 45 degrees towards the outside of the lens bearing seat 202, and the second protruding rib 704 is plastically deformed and bent 1.5mm along the length direction. The yield strength of the material needs to be overcome if detachment is required. In some embodiments, optionally, the second locking groove has a width of 3 to 4mm and a depth of 3mm, and the length of the second protruding rib matched with the second locking groove is 1.5mm, the width of the second protruding rib is 2mm, and the thickness of the second protruding rib does not exceed the depth of the second locking groove. When the second rib is assembled in the second clamping groove, the second rib and two sides of the second clamping groove are provided with angle adjusting allowance. Because the second bead leaves the surplus of angle of adjustment with second draw-in groove both sides like this, so when the second bead chucking was in the second draw-in groove, the laminating power of the two contact surface was less, played the effect of certain location, and plastic deformation takes place for the second bead under the effect of pressure in the later stage, fixes the second bead in the second draw-in groove. After the lens bearing seat is fixed with the casing, if the angle between the lens and the fixing plate needs to be adjusted, the structure of the lens bearing seat fixed with the casing can be rotated relative to the PCB bearing seat, so that the purpose of adjusting the angle is achieved. In addition, the circumferential rotation of the shell can be effectively prevented through the connection mode, and the accuracy of the swing angle of the lens unit is influenced. In some embodiments, optionally, the number of the second locking grooves may be multiple, preferably two, and the multiple second locking grooves are symmetrically distributed along the circumferential direction of the flange, so that the circumferential force of the lens bearing seat and the circumferential direction of the housing is more uniform.

In some embodiments, optionally, the lens unit includes a lens, and the lens is fixedly connected to the output end of the rotating shaft through a fixing seat. Fig. 9 is a schematic structural diagram of a lens unit according to an embodiment of the present application. Fig. 10 is a schematic structural view of the lens holder of fig. 9. As shown in fig. 9 and 10, the fixing seat 900 includes a bracket 901 and a locking block 902, and the bracket 901 includes a clamping portion formed by an upper claw 903 and a lower claw 904, and a support seat 906 fixedly connected to an end surface of the clamping portion. In some embodiments, optionally, the support block 906 and the clamp portion are an integrally formed structure. The lens 104 is secured within the clip portion in a manner that may be secured by an adhesive process. The locking block 902 and the support 906 are engaged to form a cavity (not shown) for receiving the output end of the shaft, and the locking block 902 and the support 906 lock the output end of the shaft in the cavity by the fastening member 908.

With continued reference to fig. 8, in order to prevent the rotation angle of the lens unit from exceeding the preset range, a protrusion 805 is disposed on the end surface 804 of the lens bearing seat 202 facing the lens, and the protrusion 805 is used to limit the rotation angle of the lens in the lens unit. In some embodiments, optionally, the rotation angle of the lens is 11 degrees and the frequency is 10HZ. In some embodiments, optionally, the protrusion 805 is disposed along the edge of the end surface of the lens bearing seat, the edge of the protrusion 805 is coincident with the edge of the lens bearing seat 202, the cross-sectional shape of the protrusion 805 is triangle-like, and the action surface where the protrusion collides with the locking block is a plane. The lug sets up on latch segment pivoted route, and when the lens swing, the action face of latch segment and lug bumps for the swing angle of lens is not more than predetermined swing angle.

To sum up, when this application embodiment realized vibrating mirror motor installation assembly through the components of a whole that can function independently design of PCB board bearing frame, casing and lens bearing frame, installer only need simply adjust the position of casing and PCB board bearing frame can realize the accuracy of casing and the mirror unit relative position that shakes. The PCB bearing seat and the lens bearing seat of the galvanometer motor provided by the embodiment of the application are stably connected with the shell, the concentricity is good, the circumferential rotation can be effectively prevented, and the swing angle of the lens is more accurate; in addition, the split design can also reduce the assembly difficulty of the galvanometer motor and improve the production efficiency. In addition, compared with an integrated shell structure, the PCB bearing seat, the shell and the lens bearing seat are designed to be of a split structure, the processing difficulty of parts can be reduced, and the processing cost is reduced.

The above-described embodiments are provided for illustrative purposes only and are not intended to be limiting, and various changes and modifications may be made by those skilled in the art without departing from the scope of the present disclosure, and therefore, all equivalent technical solutions should fall within the scope of the present disclosure.

Claims (15)

1. A galvanometer motor comprises a drive-by-wire unit, a shell unit and a lens unit which are sequentially connected, and is characterized in that the shell unit comprises a shell, one end of the shell is connected with a PCB bearing seat, and the other end of the shell is connected with a lens bearing seat; the winding and the rotor assembly are arranged in the shell, the rotor assembly comprises a rotating shaft and a limiting transverse shaft which radially penetrates through the rotating shaft, two ends of the rotating shaft are rotatably fixed on the shell unit through a first bearing and a second bearing respectively, the limiting transverse shaft and the first bearing are accommodated in the PCB bearing seat, and the second bearing is accommodated in the lens bearing seat;

the shell is connected with the control panel bearing seat through a first connecting part;

the shell is connected with the lens bearing seat through a second connecting part.

2. The galvanometer motor of claim 1, wherein a fixing plate is convexly arranged on the outer side of the casing along the tangential direction of the periphery, and a fixing hole for connecting with external equipment is formed in the fixing plate.

3. The galvanometer motor of claim 1, wherein the PCB board bearing block includes a first cylinder and a second cylinder connected to each other, a cross-sectional area of the first cylinder is larger than a cross-sectional area of the second cylinder, the first cylinder is connected to a PCB board disposed in the PCB board bearing block, and an outer side surface of the second cylinder is connected to an inner wall of a rear port of the housing.

4. The galvanometer motor of claim 3, wherein the first connecting portion includes a first engaging slot and a first rib, the first engaging slot is disposed along an axial direction of an outer side surface of the first column, the first rib extends along an axial direction of an edge of the rear end of the housing, a position of the first rib is corresponding to a position of the first engaging slot, and the first rib is engaged with the first engaging slot for fixing the PCB bearing block on the housing.

5. The galvanometer motor of claim 4, wherein the number of the first clamping grooves is multiple, and the multiple first clamping grooves are symmetrically distributed along the circumferential direction of the first cylinder.

6. The galvanometer motor of claim 4, wherein the first rib is fixedly connected with the first slot by riveting.

7. The galvanometer motor of claim 1, wherein the second connecting portion comprises a second slot and a second rib, the outer side of the lens bearing seat is circumferentially provided with a flange, the second slot is axially formed along the side of the flange, the second rib is axially formed along the front end of the housing, the position of the second rib corresponds to the position of the second slot, and the second rib is clamped in the second slot to fix the lens bearing seat on the housing.

8. The galvanometer motor of claim 7, wherein the second engaging groove is provided in plural number, and the plural second engaging grooves are symmetrically distributed along a circumferential direction of the flange.

9. The galvanometer motor of claim 7, wherein the second rib is fixedly connected with the second slot by riveting.

10. A galvanometer motor according to claim 6 or 9, wherein after riveting, the contact surface of the first rib and the first slot or the second rib and the second slot is bent by no more than 1.5mm along the length direction, and the contact surface is inclined by no less than 45 ° towards the inside of the housing.

11. The galvanometer motor of claim 7, wherein the second bearing is fixedly connected with the lens bearing seat in an interference fit manner, and the interference range is 0.01-0.05.

12. The galvanometer motor of claim 1, wherein a wave washer is sleeved on the rotating shaft between the limiting transverse shaft and the first bearing, the wave washer is clamped on the inner wall of a bearing chamber, and the bearing chamber is a containing cavity for containing the first bearing on a PCB bearing seat.

13. The galvanometer motor of claim 12, wherein the wave washer openings are closed by overlapping to form an overlap, and wherein the wave washer has an outer diameter that is greater than a diameter of the inner wall of the bearing chamber.

14. A galvanometer motor as set forth in claim 13, wherein said effective overlap at said overlap is in the range of 2 to 3mm and said wave washer has an outer diameter which is 0.1 to 0.5mm greater than the diameter of the inner wall of said bearing chamber.

15. A galvanometer motor according to claim 1, wherein the material of the housing is a metallic soft magnetic material.

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