Mirror clamp assembly, galvanometer module and laser radar

Abstract

The utility model discloses a mirror clamp assembly, a galvanometer module and a laser radar, and relates to the technical field of laser radars. The mirror clamp assembly comprises a mirror clamp body and a locking piece, the mirror clamp body is of an integrally-formed structure, a shaft hole, a locking screw hole and a lens assembling groove are formed in the mirror clamp body, the shaft hole is used for being matched with a motor shaft in an inserted mode, and the locking screw hole is located in the upward side of the shaft hole and communicates with the shaft hole; the locking piece is used for being in threaded connection with the locking screw hole and abutting against the limiting groove in the motor shaft, and the lens assembling groove is used for installing a lens. The mirror clamp assembly has better stability and fewer parts, the performance of the galvanometer module can be improved, and the assembly process and the mold cost are reduced. The galvanometer module provided by the application comprises the above lens clamp assembly. The laser radar provided by the application comprises the above galvanometer module.

Description

Technical Field

[0001] The present application relates to the field of laser radar technology, and in particular to a mirror clamp assembly, a galvanometer module and a laser radar. Background Art

[0002] Galvanometer modules are widely used in laser radars to achieve laser scanning in a certain direction. In the galvanometer module, the drive motor and lens must have high precision and stability to ensure accurate positioning and scanning of the laser beam. Deviations in the position or speed of the lens will lead to measurement errors. The lens (i.e., galvanometer) of the galvanometer module is usually fixed to the motor shaft of the drive motor through a mirror clamp assembly. In the related art, the mirror clamp assembly includes two independent base bodies, which are fastened by multiple screws and jointly clamp the motor shaft, and the lens is installed on one of the base bodies. This mirror clamp assembly has many parts and poor stability. Utility Model Content

[0003] The purpose of the present application is to provide a mirror clamp assembly, a galvanometer module and a laser radar. The mirror clamp assembly has fewer parts and a simple and stable structure, which is conducive to meeting the high-precision requirements of the galvanometer module and the laser radar.

[0004] The embodiment of the present application is implemented as follows:

[0005] In the first aspect, the present application provides a lens clamp assembly, including a lens clamp body and a locking piece. The lens clamp body is an integrally formed structure, and an axial hole, a locking screw hole and a lens assembly groove are formed on the lens clamp body. The axial hole is used to be plugged into and matched with a motor shaft. The locking screw hole is located on one side of the axial hole in a radial direction and is connected to the axial hole. The locking piece is used to be screwed into the locking screw hole and pressed into a limit groove on the motor shaft. The lens assembly groove is used to install the lens.

[0006] In the embodiment of the present application, the mirror clamp body of the mirror clamp assembly is an integrally formed structure, and the shaft hole formed therein is plugged into and matched with the motor shaft, which can improve the assembly error and poor stability problems caused by the two parts assembled to jointly clamp the motor shaft in the related art, and also reduce the number of parts, assembly process and mold cost. In addition, the mirror clamp assembly of the embodiment of the present application can be tightened against the motor shaft through a locking screw hole and a locking piece, so as to achieve axial and radial limiting of the motor shaft, and the limiting effect is good, and the motor shaft is not easy to shake relative to the mirror clamp body. Compared with the method of using multiple screws in the related art, the number of fasteners used is saved, which is conducive to reducing costs.

[0007] In an optional embodiment, the axis of the locking screw hole intersects the axis of the shaft hole at right angles. By setting it in this way, the motor shaft can be better pressed against the side wall of the shaft hole to prevent the motor shaft from shaking relative to the mirror clamp body. In addition, the pressing force of the locking piece is consistent with the direction of its axis, which prevents the reaction force on the locking piece from tilting against the axis of the locking piece, causing the locking piece to deform and bend.

[0008] In an optional embodiment, a guide cone is provided at one end of the locking piece that is inserted into the shaft hole. The guide cone surrounds the axis of the locking piece, and the guide cone is used to fit with the wall of the limiting groove. By providing the guide cone, during assembly, the opening of the limiting groove and the locking screw hole do not need to be precisely aligned. The motor shaft will automatically adjust its position relative to the mirror clamp body under the guidance of the guide bevel, and finally the end of the locking piece is inserted into place, and the guide bevel fits tightly with the wall of the limiting groove. Therefore, by providing the guide cone, the motor shaft can be automatically positioned, which not only reduces the difficulty of assembly, but also improves the assembly accuracy.

[0009] In an optional embodiment, the lens assembly groove is a strip groove, the depth direction of the lens assembly groove is perpendicular to its length direction, and the lens assembly groove forms openings at both ends in the length direction. By setting the lens assembly groove in a strip shape, it is beneficial to improve the stability of clamping; and the lens assembly groove forms openings at both ends in the length direction, so that the two sides of the lens in the width direction can extend from the openings of the lens assembly groove, so that the lens assembly groove can adapt to lenses of different widths.

[0010] In an optional embodiment, the lens clip body includes a seat body, a first clamping portion and a second clamping portion, the seat body has a first side and a second side opposite to each other in a first direction, the first clamping portion and the second clamping portion are arranged on the first side of the seat body, the opening of the shaft hole for inserting the motor shaft is arranged on the second side of the seat body, the shaft hole extends along the first direction, the first clamping portion and the second clamping portion are spaced apart from each other in the second direction to form a lens assembly groove, and the first direction is perpendicular to the second direction. By such an arrangement, the opening direction of the lens assembly groove is opposite to the opening direction of the shaft hole, and the lens can be roughly parallel to the axis of the shaft hole after being inserted into the lens assembly groove.

[0011] In an optional embodiment, the first clamping portion has a first clamping surface facing the second clamping portion, the second clamping portion has a second clamping surface facing the first clamping portion, the first clamping surface, the second clamping surface and the axis of the shaft hole are parallel to each other, and the distances from the first clamping surface and the second clamping surface to the axis of the shaft hole are equal. By such an arrangement, when the lens is installed in the lens assembly groove, the axis of the shaft hole and the lens can be in the same plane, and when the galvanometer module is working, the lens always rotates along the axis passing through itself, thereby better meeting the working requirements of the galvanometer module.

[0012] In an optional embodiment, the first clamping portion and the second clamping portion are symmetrically arranged relative to a preset symmetry plane, and the axis of the shaft hole is located on the preset symmetry plane. The axis of the shaft hole is the rotation axis of the mirror clamp assembly, and the first clamping portion and the second clamping portion are symmetrically arranged relative to the preset symmetry plane, which can make the mass distribution of the mirror clamp body in space more symmetrical, and the center of gravity is close to the rotation axis, so that when the mirror clamp assembly is driven to rotate, the vibration caused is small.

[0013] In an optional embodiment, the base body forms a first side surface and a second side surface on opposite sides in the second direction, and a side of the first clamping portion facing away from the second clamping portion is flush with the first side surface, and a side of the second clamping portion facing away from the first clamping portion is flush with the second side surface. This arrangement makes the outer surface of the mirror clip body smoother, which is convenient for manufacturing and installation.

[0014] In an optional embodiment, the first clamping portion and the second clamping portion are both strip structures extending along a third direction, and the third direction is perpendicular to the first direction and the second direction. By setting the first clamping portion and the second clamping portion to be strip-shaped, a strip-shaped lens assembly groove can be constructed, which is beneficial to the stability of lens installation.

[0015] In an optional embodiment, a first boss is provided on one side of the seat body in the second direction, and the locking screw hole passes through the first boss along the second direction and extends to the inner wall of the shaft hole. By providing the first boss, the locking screw hole has a relatively long length, which can improve the connection strength between the locking screw hole and the locking piece, and reduce the risk of thread stripping by increasing the number of turns of the thread.

[0016] In an optional embodiment, a second boss is provided on the other side of the seat in the second direction. The second boss is provided to balance with the first boss, which is conducive to making the weight distribution of the mirror clip assembly in the second direction more uniform, that is, the center of gravity is closer to the rotation axis of the shaft hole.

[0017] In an optional embodiment, the outer contours of the first boss and the second boss are symmetrical with respect to the axis of the shaft hole, so that the center of gravity of the mirror clip body is closer to the rotation axis of the shaft hole.

[0018] In the second aspect, the present application provides a galvanometer module, comprising a driving motor, a lens and a mirror clamp assembly of any one of the aforementioned embodiments, a limiting groove is provided on the motor shaft of the driving motor, the motor shaft is inserted into the axial hole of the mirror clamp assembly, the locking piece is threadedly connected to the locking screw hole and the end portion is pressed into the limiting groove, and a part of the lens is inserted into the lens assembly groove.

[0019] In a third aspect, the present application provides a laser radar, comprising the galvanometer module of the aforementioned embodiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a partial schematic diagram of a galvanometer module of the related art;

[0022] Figure 2 It is an assembly cross-sectional view of the lens clamp assembly, the lens, and the motor shaft in the related art;

[0023] Figure 3 This is a schematic diagram of a galvanometer module at a first viewing angle in an embodiment of the present application;

[0024] Figure 4 A partial cross-sectional view of a galvanometer module at a second viewing angle in an embodiment of the present application;

[0025] Figure 5 for Figure 4 A magnified view of the local V in the middle;

[0026] Figure 6 This is a schematic diagram of a mirror clip body in one embodiment of the present application;

[0027] Figure 7 This is a partial cross-sectional view of a galvanometer module in another embodiment of the present application.

[0028] Icons: 001-first body; 002-second body; 0021-limiting protrusion; 003-screw; 010-galvanometer module; 100-mirror clamp assembly; 101-axial hole; 102-locking screw hole; 103-lens assembly groove; 110-mirror clamp body; 111-base; 111a-first side; 111b-second side; 112-first clamping part; 113-second clamping part; 114-first boss; 115-second boss; 120-locking piece; 121-guide cone; 122-tightening groove; 200-drive motor; 210-motor shaft; 211-limiting groove; 300-lens; 310-adhesive. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0033] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] Figure 1 It is a partial schematic diagram of a galvanometer module of the related art; Figure 2 FIG. 2 is a cross-sectional view of the assembly of the lens clip assembly, the lens 300, and the motor shaft 210 in the related art. Figure 1 and Figure 2As shown, in the galvanometer module of the related art, the mirror clamp assembly connecting the drive motor 200 and the lens 300 mostly adopts a split structure. For example, the mirror clamp body includes a first body 001 and a second body 002. The first body 001 and the second body 002 together form an axial hole for the motor shaft 210 to be inserted, forming a radial limit for the motor shaft 210. The first body 001 and the second body 002 are fastened by two screws 003. The two screws 003 need to be located on the opposite sides of the axis of the motor shaft 210 to ensure the balance of the locking force. The axial and circumferential (rotational direction) limit of the motor shaft 210 is achieved by the cooperation of the limit protrusion 0021 on the inner side of the second body 002 and the limit groove of the motor shaft 210. When the motor shaft 210 and the lens 300 are connected by this mirror clamp assembly, the following problems exist:

[0036] 1) The structural strength and stability are poor. The split mirror clamp in the related art uses two semi-cylindrical surfaces to clamp and limit the motor shaft 210. The semi-cylindrical surfaces have poor ability to maintain structural features. After the mechanical stress or thermal stress is released, the structural features have poor ability to resist deformation. There may be errors in the assembly of the first body 001 and the second body 002, and the reliability of the connection method is not easy to guarantee. For example, the first body 001 and the second body 002 are fixed with two small screws 003. The stress condition of the small screws 003 is poor. The greater the locking torque, the greater the risk of slippage, resulting in the scrapping of the entire galvanometer module. In addition, it is not easy for the mirror clamp in the related art to achieve a high degree of symmetry, and problems such as the center of gravity deviating from the rotation axis will also lead to performance degradation of the galvanometer module.

[0037] 2) Difficulty in parts processing and manufacturing. Since the assembly of the lens 300 and the lens clip assembly 100 has very high precision requirements, in order to achieve the overall precision requirements of the galvanometer module, the processing precision requirements of the individual components are extremely high.

[0038] 3) Reduced assembly efficiency: Since the first body 001 and the second body 002 are used to clamp the motor shaft 210 together, additional assembly steps are required, resulting in reduced assembly efficiency of the galvanometer module.

[0039] 4) Increased costs. Since more parts are used, each part needs to be accurate, which increases the mold and assembly costs.

[0040] 5) Inconvenient to measure. Based on the assembly reference, the semicircular holes of the first body 001 and the second body 002 in the related art are not easy to measure, and the accumulation of measurement errors is not easy to be identified in time, resulting in unstable measurement data or true value errors. Once abnormal indicators appear in the later process, it is difficult to locate the problem and analyze the cause.

[0041] In order to improve at least one of the shortcomings of the above-mentioned related technologies, the embodiment of the present application provides a mirror clamp assembly, the mirror clamp body of which adopts an integrated structure, and only one locking piece is used to complete the connection between the motor shaft and the mirror clamp assembly, which has a simple and stable structure, efficient assembly, and low cost. The embodiment of the present application also provides a galvanometer module and a laser radar.

[0042] Figure 3 This is a schematic diagram of a galvanometer module 010 at a first viewing angle in an embodiment of the present application; Figure 4 This is a partial cross-sectional view of the galvanometer module 010 at a second viewing angle in one embodiment of the present application; Figure 5 for Figure 4 The enlarged view of the local V in Figures 3 to 5 As shown, the galvanometer module 010 provided in the embodiment of the present application includes a driving motor 200, a lens 300 and a lens clamp assembly 100. The lens clamp assembly 100 is used to connect the lens 300 and the motor shaft 210 (ie, the output shaft) of the driving motor 200, so that the driving motor 200 can drive the lens 300 to rotate to achieve scanning.

[0043] In this embodiment, a limiting groove 211 is provided on the motor shaft 210, which is used to limit the relative position of the motor shaft 210 and the lens clamp assembly 100. The lens clamp assembly 100 includes a lens clamp body 110 and a locking member 120, wherein the lens clamp body 110 is an integrally formed structure. An axial hole 101, a locking screw hole 102 and a lens assembly groove 103 are formed on the lens clamp body 110. The axial hole 101 is plugged and matched with the motor shaft 210, and the wall surface of the axial hole 101 can limit the motor shaft 210 in the radial direction to a certain extent. The locking screw hole 102 is located on one side of the axial hole 101 in the radial direction and is connected to the axial hole 101, and the locking member 120 is screwed with the locking screw hole 102 and pressed into the limiting groove 211 on the motor shaft 210. The lens 300 is installed in the lens assembly groove 103; specifically in this embodiment, the lens 300 is bonded to the lens assembly groove 103 by an adhesive 310.

[0044] In this embodiment, the locking element 120 can abut against the motor shaft 210 in the radial direction of the motor shaft 210, and after being abutted, the radial limit of the motor shaft 210 is improved. In addition, the limit groove 211 is plugged and matched with the end of the locking element 120, so that the mirror clip body 110 and the motor shaft 210 cannot rotate relative to each other, and cannot move relative to each other in the axial direction of the motor shaft 210, that is, the motor shaft 210 is limited in the circumferential direction and the axial direction.

[0045] In the embodiment of the present application, the mirror clip body 110 of the mirror clip assembly 100 is an integrally formed structure with good integrity and reliable structural strength. The mirror clip body 110 itself forms an axial hole 101 that is plugged into the motor shaft 210, which can improve the assembly error and poor stability caused by the two parts assembled to jointly clamp the motor shaft 210 in the related art, and also reduce the number of parts, assembly process and mold cost. In addition, the mirror clip assembly 100 of the embodiment of the present application can be tightened against the motor shaft 210 through a locking screw hole 102 and a locking piece 120 to achieve axial, radial and circumferential limiting of the motor shaft 210, with good limiting effect, and the motor shaft 210 is not easy to shake relative to the mirror clip body 110. Compared with the method of using multiple screws in the related art, the number of fasteners used is saved, which is also conducive to reducing costs.

[0046] Optionally, the mirror clip body 110 may be integrally formed by casting, 3D printing, or the like.

[0047] In this embodiment, the axis of the locking screw hole 102 intersects perpendicularly with the axis of the shaft hole 101. By such an arrangement, the motor shaft 210 can be better pressed against the side wall of the shaft hole 101 to prevent the motor shaft 210 from shaking relative to the lens clip body 110. In addition, the pressing force of the locking element 120 is consistent with the direction of its axis, which prevents the reaction force on the locking element 120 from tilting against the axis of the locking element 120 and causing the locking element 120 to deform and bend.

[0048] Optionally, the motor shaft 210 and the shaft hole 101 may be clearance fit, interference fit or transition fit.

[0049] Figure 6 FIG. 1 is a schematic diagram of a mirror clip body 110 in one embodiment of the present application. Figures 3 to 6 As shown, in this embodiment, the lens assembly groove 103 is a strip groove, the depth direction of the lens assembly groove 103 is perpendicular to the length direction thereof, and the lens assembly groove 103 forms openings at both ends in the length direction thereof. By setting the lens assembly groove 103 in a strip shape, it is beneficial to improve the stability of clamping. In addition, the lens assembly groove 103 forms openings at both ends in the length direction thereof, so that both sides in the width direction of the lens 300 can extend from the openings of the lens assembly groove 103, so that the lens assembly groove 103 can adapt to lenses 300 of different widths. In addition, the lens assembly groove 103 forms openings at both ends in the length direction thereof, so that when bonding the lens 300, even if the excess adhesive 310 overflows, it can overflow through the two openings, and it is not easy to directly contaminate the optical surface of the lens 300.

[0050] In an optional embodiment, the lens clip body 110 includes a base 111, a first clamping portion 112 and a second clamping portion 113. The base 111 has a first side and a second side opposite to each other in a first direction (i.e., the direction indicated by arrows ab in the figure). The first clamping portion 112 and the second clamping portion 113 are arranged on the first side of the base 111 (i.e., Figure 4 , Figure 5 The opening of the shaft hole 101 for inserting the motor shaft 210 is arranged on the second side of the seat body 111 (i.e. Figure 4 , Figure 5 The shaft hole 101 extends along a first direction, and the first clamping portion 112 and the second clamping portion 113 are spaced apart from each other in a second direction (i.e., the direction indicated by the arrow cd in the figure) to form a lens assembly groove 103, and the first direction is perpendicular to the second direction. By such an arrangement, the opening direction of the lens assembly groove 103 is opposite to the opening direction of the shaft hole 101, and the lens 300 can be roughly parallel to the axis of the shaft hole 101 after being inserted into the lens assembly groove 103. In this embodiment, in order to facilitate the insertion of the motor shaft 210, a chamfer is set between the opening of the shaft hole 101 and the surface of the first side of the seat body 111.

[0051] In this embodiment, the shaft hole 101 is a blind hole, which is opened from the second side of the seat body 111 to the first side, so the opening of the shaft hole 101 is located on the second side of the seat body 111 to allow the motor shaft 210 to be inserted. In other optional embodiments, the shaft hole 101 can also be a through hole, and the shaft hole 101 can extend to the bottom of the lens assembly groove 103 and communicate with the lens assembly groove 103.

[0052] In this embodiment, the first clamping portion 112 has a first clamping surface facing the second clamping portion 113, and the second clamping portion 113 has a second clamping surface facing the first clamping portion 112. The first clamping surface, the second clamping surface, and the axis of the shaft hole 101 are parallel to each other, and the first clamping surface and the second clamping surface to the axis of the shaft hole 101 ( Figure 5 The distance between the first clamping surface and the second clamping surface is equal to the distance between the first clamping surface and the second clamping surface. Since the two side surfaces of the lens 300 are usually parallel, the parallel and spaced arrangement of the first clamping surface and the second clamping surface can make the thickness of the adhesive 310 between the lens 300 and the first clamping surface and the second clamping surface relatively uniform. By setting the distances from the first clamping surface and the second clamping surface to the axis of the shaft hole 101 to be equal, when the lens 300 is installed in the lens assembly groove 103, the axis of the shaft hole 101 and the lens 300 can be in the same plane. When the galvanometer module 010 is working, the lens 300 always rotates along the axis passing through itself, thereby better meeting the working requirements of the galvanometer module 010.

[0053] Specifically in this embodiment, the adhesive 310 is distributed between the first clamping surface and the lens 300 and between the second clamping surface and the lens 300 ; in other embodiments, it can also be distributed between the bottom of the lens assembly groove 103 and the end surface of the lens 300 .

[0054] In this embodiment, the first clamping portion 112 and the second clamping portion 113 are symmetrically arranged relative to a preset symmetry plane, and the axis of the shaft hole 101 is located on the preset symmetry plane. It can be understood that the preset symmetry plane is a virtual space plane. In this embodiment, the preset symmetry plane is perpendicular to the second direction, and the preset symmetry plane divides the clamping space between the first clamping portion 112 and the second clamping portion 113 into two halves. The axis of the shaft hole 101 is the rotation axis of the lens clamp assembly 100. The symmetrical arrangement of the first clamping portion 112 and the second clamping portion 113 relative to the preset symmetry plane can make the mass distribution of the lens clamp body 110 more symmetrical in space, and the center of gravity is close to the rotation axis, so that when the lens clamp assembly 100 and the lens 300 are driven to rotate, the vibration caused is smaller.

[0055] In this embodiment, the first side surface 111a and the second side surface 111b are formed on opposite sides of the seat body 111 in the second direction, and the side of the first clamping portion 112 away from the second clamping portion 113 is flush with the first side surface 111a, and the side of the second clamping portion 113 away from the first clamping portion 112 is flush with the second side surface 111b. Such an arrangement makes the outer surface of the mirror clip body 110 smoother, which is convenient for manufacturing and installation. Furthermore, since the first clamping portion 112 and the second clamping portion 113 are symmetrically arranged relative to the preset symmetry plane, the thickness of the two in the second direction is also the same, and the back surfaces of the first clamping portion 112 and the second clamping portion 113 are flush with the first side surface 111a and the second side piece, respectively, which means that the distances between the first side surface 111a and the second side surface 111b and the preset symmetry plane are equal, and the seat body 111 has good symmetry in the second direction, which is conducive to reducing the vibration of the mirror clip assembly 100 during rotation.

[0056] In this embodiment, the first clamping portion 112 and the second clamping portion 113 are both along the third direction ( Figure 3 The third direction is perpendicular to the first direction and the second direction. By setting the first clamping portion 112 and the second clamping portion 113 in a strip shape, a strip-shaped lens assembly groove 103 can be constructed, which is beneficial to the stability of the installation of the lens 300. Optionally, the axis of the shaft hole 101 is located at the geometric center of the seat body 111 in the third direction, so that the center of gravity of the lens clip body 110 can be closer to its rotation axis.

[0057] Optionally, a first boss 114 is convexly provided on one side of the seat body 111 in the second direction, and the locking screw hole 102 passes through the first boss 114 along the second direction and extends to the inner wall of the shaft hole 101. In this embodiment, the first boss 114 is convexly provided on the first side surface 111a. By providing the first boss 114, the locking screw hole 102 has a relatively long length, which can improve the connection strength between the locking screw hole 102 and the locking member 120, and reduce the risk of thread stripping by increasing the number of turns of the thread.

[0058] Furthermore, a second boss 115 is convexly provided on the other side of the seat body 111 in the second direction. In this embodiment, the second boss 115 is convexly provided on the second side surface 111b. The purpose of providing the second boss 115 is to balance with the first boss 114, which is conducive to making the weight distribution of the mirror clip assembly 100 in the second direction more uniform, that is, the center of gravity is closer to the rotation axis of the shaft hole 101, so that the mirror clip assembly 100 can rotate more smoothly.

[0059] In this embodiment, the outer contours of the first boss 114 and the second boss 115 are symmetrical with respect to the axis center of the shaft hole 101. In other words, except that the second boss 115 does not have a locking screw hole 102, the rest of the shape and size design are consistent with the first boss 114. This arrangement makes the mirror clamp body 110 have better symmetry, and its center of gravity is closer to the rotation axis of the shaft hole 101. It can be understood that in other embodiments, the second boss 115 can also have a screw hole so that its interior is consistent with the first boss 114. Furthermore, a screw can be set in the second boss 115 to maintain weight balance, and the screw can abut or not abut the motor shaft 210.

[0060] It should be understood that the limiting groove 211 and the end of the locking member 120 should match each other, and the specific shapes and sizes of the two can be set as needed. Figure 5 In the illustrated embodiment, the end of the locking member 120 is a columnar structure, and correspondingly, the limiting groove 211 is a columnar groove, thereby matching the end of the locking member 120. During assembly, the motor shaft 210 needs to be inserted into the corresponding position, and then the locking member 120 is screwed into the locking screw hole 102 until the end of the locking member 120 is embedded in the limiting groove 211 and pressed against the motor shaft 210.

[0061] Figure 7 FIG. 1 is a partial cross-sectional view of a galvanometer module 010 in another embodiment of the present application. Figure 7As shown, in this embodiment, a guide cone 121 is provided at one end of the locking member 120 for extending into the shaft hole 101. The guide cone 121 surrounds the axis of the locking member 120, and the guide cone 121 is used to fit with the wall surface of the limiting groove 211. It can be understood that the guide cone 121 at the end of the locking member 120 gradually shrinks toward the front end of the locking member 120. Correspondingly, the limiting groove 211 on the motor shaft 210 is a conical groove, that is, the groove wall of the limiting groove 211 is an inner cone. By providing the guide cone 121, during assembly, the opening of the limiting groove 211 does not need to be precisely aligned with the locking screw hole 102. The motor shaft 210 will automatically adjust its position relative to the mirror clamp body 110 in the first direction under the guiding action of the guide bevel, and finally the end of the locking member 120 is inserted into place, and the guide bevel fits tightly with the wall surface of the limiting groove 211. Therefore, by providing the guide cone surface 121 , the motor shaft 210 can be automatically positioned, which reduces the difficulty of assembly and improves the assembly accuracy.

[0062] Optionally, a tightening groove 122 is provided at the rear end of the locking element 120, and the shape of the tightening groove 122 can be a straight line, a cross, a hexagon, a plum blossom, a pentagon, etc. The outer periphery of the locking element 120 can be coated with anti-drop glue or thread glue to prevent loosening under dynamic load. Optionally, the orientation of the locking element 120 is arranged exactly opposite to the direction of the light exit angle and the incident angle to reduce or prevent optical crosstalk caused by stray.

[0063] The embodiment of the present application also provides a laser radar (not shown in the figure), including the galvanometer module 010 provided in the above embodiment.

[0064] In summary, in the mirror clip assembly 100 provided in the embodiment of the present application, the mirror clip body 110 is an integrally formed structure, and the shaft hole 101 formed by the mirror clip body 110 is plugged and matched with the motor shaft 210, which can improve the problems of large assembly error, poor stability, and high processing difficulty caused by the assembly of two parts to jointly clamp the motor shaft 210 in the related art. The integrated mirror clip body 110 has higher strength, better anti-deformation ability, and better ability to maintain dimensional accuracy after processing. At the same time, the mirror clip assembly 100 provided in the embodiment of the present application also reduces the number of parts, assembly procedures, and mold costs. In addition, the mirror clip assembly 100 in the embodiment of the present application can be stably pressed against the motor shaft 210 through a locking screw hole 102 and a locking piece 120, so as to achieve the axial and radial limiting of the motor shaft 210, and the limiting effect is good, and the motor shaft 210 is not easy to shake relative to the mirror clip body 110. Compared with the method of using multiple screws in the related art, the number of fasteners used is saved, which is conducive to reducing costs, and it is not easy to slip, thereby improving reliability.

[0065] The galvanometer module 010 provided in the embodiment of the present application includes the above-mentioned mirror clamp assembly 100, and the laser radar provided in the embodiment of the present application includes the above-mentioned galvanometer module 010, and therefore also has the advantages of high precision, good reliability, and low difficulty in processing and assembly.

[0066] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A mirror clip assembly, characterized in that: It includes a lens clamp body and a locking piece. The lens clamp body is an integrally formed structure. An axial hole, a locking screw hole and a lens assembly groove are formed on the lens clamp body. The axial hole is used to be plugged into and matched with a motor shaft. The locking screw hole is located on one side of the axial hole in a radial direction and is connected to the axial hole. The locking piece is used to be screwed into the locking screw hole and pressed into the limit groove on the motor shaft. The lens assembly groove is used to install the lens.

2. The mirror clip assembly according to claim 1, characterized in that: The axis of the locking screw hole intersects the axis of the shaft hole perpendicularly.

3. The mirror clip assembly according to claim 1, characterized in that: One end of the locking piece that is used to extend into the axial hole is provided with a guide cone surface, the guide cone surface surrounds the axis of the locking piece, and the guide cone surface is used to fit with the wall surface of the limiting groove.

4. The mirror clip assembly according to claim 1, characterized in that: The lens assembly groove is a strip-shaped groove, the depth direction of the lens assembly groove is perpendicular to the length direction thereof, and the two ends of the lens assembly groove in the length direction thereof are open.

5. The mirror clip assembly according to claim 1, characterized in that: The lens clip body includes a seat body, a first clamping portion and a second clamping portion, the seat body has a first side and a second side opposite to each other in a first direction, the first clamping portion and the second clamping portion are arranged on the first side of the seat body, the axial hole is used to insert the opening of the motor shaft and is arranged on the second side of the seat body, the axial hole extends along the first direction, the first clamping portion and the second clamping portion are spaced apart from each other in the second direction to form the lens assembly groove, and the first direction is perpendicular to the second direction.

6. The mirror clip assembly according to claim 5, characterized in that: The first clamping portion has a first clamping surface facing the second clamping portion, and the second clamping portion has a second clamping surface facing the first clamping portion. The first clamping surface, the second clamping surface and the axis of the axial hole are parallel to each other, and the first clamping surface and the second clamping surface are at equal distances from the axis of the axial hole.

7. The mirror clip assembly according to claim 5, characterized in that: The first clamping portion and the second clamping portion are symmetrically arranged relative to a preset symmetry plane, and the axis of the shaft hole is located on the preset symmetry plane.

8. The mirror clip assembly according to claim 5, characterized in that: The seat body forms a first side surface and a second side surface on opposite sides in the second direction, respectively; a side of the first clamping portion away from the second clamping portion is flush with the first side surface; a side of the second clamping portion away from the first clamping portion is flush with the second side surface.

9. The mirror clip assembly according to claim 5, characterized in that: The first clamping portion and the second clamping portion are both strip structures extending along a third direction, and the third direction is perpendicular to the first direction and the second direction.

10. The mirror clip assembly according to claim 5, characterized in that: A first boss is protruding from one side of the seat body in the second direction, and the locking screw hole passes through the first boss along the second direction and extends to the inner wall of the shaft hole.

11. The mirror clip assembly according to claim 10, characterized in that: A second boss is protrudingly formed on the other side of the seat body in the second direction.

12. The mirror clip assembly according to claim 11, characterized in that: The outer contours of the first boss and the second boss are symmetrical relative to the axis center of the shaft hole.

13. A galvanometer module, characterized in that: It comprises a driving motor, a lens and a lens clamp assembly according to any one of claims 1 to 12, wherein a limiting groove is provided on the motor shaft of the driving motor, the motor shaft is inserted into the shaft hole of the lens clamp assembly, the locking piece is threadedly connected to the locking screw hole and the end thereof is pressed into the limiting groove, and a part of the lens is inserted into the lens assembly groove.

14. A laser radar, characterized in that: Including the galvanometer module described in claim 13.

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