Rotating mirror motor, laser radar device and vehicle

Abstract

The invention discloses a rotating mirror motor, a laser radar device and a vehicle. The rotating mirror motor comprises a stator, a rotor and a bearing; the stator is arranged in the rotor, and the rotor rotates around the stator; the bearing is arranged between the stator and the rotor and can support the rotor to rotate; the stator and / or the rotor are / is provided with bearing glue grooves corresponding to the bearings, and the bearing glue grooves are used for gluing so as to be fixedly connected with the bearings. The stator and the bearing and / or the rotor and the bearing are fixedly connected in a gluing mode, the influence of interference press fitting on the structure of the bearing is avoided, and the function of the bearing is effectively guaranteed.

Description

Technical Field

[0001] The present invention generally relates to the field of laser radar technology, and more specifically to a rotating mirror motor and a vehicle. Background Art

[0002] As more and more vehicles support intelligent driving, on-board lidar, as the core sensor of the intelligent driving system, provides vehicles with rich and accurate environmental information through its three-dimensional environment reconstruction capability, and its market demand is becoming more and more extensive.

[0003] At present, mainstream automotive laser radars are scanning radars. For example, line-scan radars emit a laser beam each time to cover a certain position. With the help of the rotation of the rotating mirror, the laser beam is swept from left to right, thereby covering a large angle such as 120°, realizing the functions of identification, ranging and positioning. The rotating mirror needs to be driven by a rotating mirror motor. The rotating mirror motor includes a stator assembly, a rotor assembly and a motor shaft. A bearing is set on the motor shaft to connect with the rotor assembly. However, the existing bearings and motor shafts are pressed with interference fit, which can easily affect the structure of the bearings and thus affect the performance of the rotating mirror motor.

[0004] Therefore, it is necessary to provide a rotating mirror motor, a laser radar device and a vehicle to at least partially solve the above problems. Summary of the invention

[0005] A series of simplified concepts are introduced in the Summary of the Invention, which will be further described in detail in the Detailed Description of the Invention. The Summary of the Invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0006] In order to at least partially solve the above problems, a first aspect of the present invention provides a rotating mirror motor, comprising:

[0007] stator;

[0008] A rotor, wherein the stator is arranged inside the rotor, and the rotor rotates around the stator;

[0009] A bearing, wherein the bearing is disposed between the stator and the rotor and is capable of supporting the rotor to rotate;

[0010] The stator and / or the rotor are provided with bearing glue grooves corresponding to the bearings, and the bearing glue grooves are used for applying glue so as to be fixedly connected with the bearings.

[0011] Optionally, the stator comprises:

[0012] A motor shaft, the side wall of which is provided with the bearing rubber groove;

[0013] The bearing sleeve is arranged on the motor shaft, and the bearing glue groove is glued to the inner ring of the bearing to fix the bearing.

[0014] Optionally, the bearing comprises at least:

[0015] The first bearing is sleeved on the motor shaft, the bearing adhesive groove comprises a first bearing adhesive groove, the first bearing adhesive groove is arranged on the side wall of the motor shaft, and the first bearing adhesive groove is glued to the inner ring of the first bearing.

[0016] Optionally, the rotor comprises:

[0017] A rotor housing is sleeved on the motor shaft and fixedly connected to at least the outer ring of the first bearing. The rotor housing can rotate around the motor shaft.

[0018] Optionally, the rotor housing comprises:

[0019] The shell body is provided with an axial inner cavity and is sleeved on the motor shaft through the axial inner cavity.

[0020] Optionally, the rotor housing further comprises:

[0021] a first bearing groove, the first bearing groove being arranged in the axial inner cavity and being used for mounting the first bearing;

[0022] A partition is arranged in the axial inner cavity and located below the first bearing groove, and is used for abutting against the lower end of the first bearing.

[0023] Optionally, the bearing rubber groove further includes:

[0024] A third bearing adhesive groove is provided on the inner wall of the first bearing groove, and the third bearing adhesive groove is glued to the outer ring of the first bearing.

[0025] Optionally, the stator further comprises:

[0026] A gasket, which is sleeved on the motor shaft and arranged above the first bearing;

[0027] A spring is disposed between the gasket and the first bearing.

[0028] Optionally, the stator further comprises:

[0029] A retaining ring is fixed on the motor shaft and is used to limit the bearing. The retaining ring includes at least a first retaining ring. The first retaining ring is fixed on the motor shaft and abuts against the upper end of the gasket or the upper end of the first bearing.

[0030] Optionally, the bearing further comprises:

[0031] The second bearing is sleeved on the motor shaft and is located below the first bearing. The bearing adhesive groove also includes a second bearing adhesive groove. The second bearing adhesive groove is arranged on the side wall of the motor shaft. The second bearing adhesive groove is glued to the inner ring of the second bearing.

[0032] Optionally, the rotor housing further comprises a second bearing groove, which is arranged in the axial inner cavity and located below the first bearing groove, and is used for mounting the second bearing;

[0033] And / or, the spring is arranged between the partition and the second bearing;

[0034] And / or, the retaining ring further includes a second retaining ring, which is fixed on the motor shaft and abuts against the lower end of the second bearing.

[0035] Optionally, the rotor further comprises:

[0036] A mirror bracket, which is sleeved on the rotor housing and can be driven by the rotor housing to rotate around the motor shaft;

[0037] The lens is arranged on the outer side wall of the mirror bracket.

[0038] Optionally, the rotor housing also includes a first connecting hole, which is arranged at the upper end of the shell body, and the mirror bracket includes a second connecting hole, which is arranged at the upper end of the mirror bracket, and bolts are installed in the first connecting hole and the second connecting hole to connect the rotor housing and the mirror bracket.

[0039] Optionally, the rotor housing further includes a positioning protrusion, which is arranged at the upper end of the shell body, and the mirror bracket includes a positioning hole, which is arranged at the upper end of the mirror bracket, and the positioning protrusion is inserted into the positioning hole to achieve positioning of the rotor housing and the mirror bracket.

[0040] Optionally, the outer side wall of the mirror bracket is provided with a plurality of mounting surfaces, and each mounting surface is provided with one of the lenses.

[0041] Optionally, the rotor further comprises:

[0042] An encoder is arranged at the upper end of the mirror bracket, and the encoder is used to detect the rotation angle of the mirror bracket.

[0043] Optionally, the stator further comprises:

[0044] The stator winding is sleeved on the motor shaft and arranged below the bearing.

[0045] Optionally, the rotor housing further comprises a magnetic ring groove, and the magnetic ring groove is arranged in the axial inner cavity;

[0046] The rotating mirror motor also includes a magnetic ring, which is arranged in the magnetic ring groove and corresponds to the stator winding.

[0047] Optionally, the motor shaft comprises:

[0048] Axle body;

[0049] A threading cavity is provided in the shaft body, a first end of the threading cavity is provided at an end of the shaft body, a second end of the threading cavity is provided at a side wall of the shaft body, and the threading cavity is used for passing a wiring harness.

[0050] Optionally, the mirror rotating motor further includes:

[0051] A wiring harness is arranged in the wire threading cavity of the motor shaft, and one end of the wiring harness is electrically connected to the stator winding.

[0052] Optionally, the threading cavity is L-shaped as a whole, including a first cavity section and a second cavity section, the first cavity section is arranged along the axial direction of the motor shaft, the second cavity section is arranged along the radial direction of the motor shaft, and the first cavity section is connected to the second cavity section.

[0053] Optionally, the side wall of the shaft body is provided with at least one mounting groove, and the mounting groove is used for mounting a retaining ring.

[0054] Optionally, the shaft body is provided with a first step surface, and the first step surface is used for mounting the stator winding.

[0055] Optionally, the shaft body is provided with a second step surface, the second step surface is used for installing the base, and the second step surface is closer to the end of the shaft body than the first step surface.

[0056] A second aspect of the present invention provides a laser radar device, comprising a rotating mirror motor as described in any one of the above technical solutions.

[0057] A third aspect of the present invention provides a vehicle comprising a laser radar device as described in any one of the above technical solutions.

[0058] According to a rotating mirror motor, laser radar device and vehicle of the present invention, the motor shaft and the bearing are fixedly connected by gluing, so as to avoid the influence of interference press fitting on the structure of the bearing, effectively ensure the bearing function, and the rotor assembly will not have rotational eccentricity or rotational blockage, thereby ensuring the performance of the rotating mirror motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] The following drawings of the embodiments of the present invention are used as part of the present invention for understanding the present invention. The embodiments of the present invention and their description are shown in the drawings to explain the principles of the present invention. In the drawings,

[0060] Figure 1 A front view of a rotating mirror motor according to a preferred embodiment of the present invention;

[0061] Figure 2 A top view of a rotating mirror motor according to a preferred embodiment of the present invention;

[0062] Figure 3 for Figure 1 Sectional view along AA;

[0063] Figure 4 for Figure 5 Cross-sectional view along CC.

[0064] Figure 5 A front view of a rotor housing according to a preferred embodiment of the present invention;

[0065] Figure 6 A top view of a rotor housing according to a preferred embodiment of the present invention;

[0066] Figure 7 is a cross-sectional view of a rotating mirror motor according to a preferred embodiment of the present invention;

[0067] Figure 8 A top view of a mirror support according to a preferred embodiment of the present invention;

[0068] Fig. 9 A front view of a motor shaft according to a preferred embodiment of the present invention;

[0069] Fig.10 A top view of a motor shaft according to a preferred embodiment of the present invention;

[0070] Fig.11 for Fig. 9 Cross-sectional view along BB.

[0071] Description of reference numerals:

[0072] 100: stator 200: rotor

[0073] 1: Harness 2: Lens

[0074] 3: Mirror bracket 4: Rotor housing

[0075] 401: Shell body 402: First bearing groove

[0076] 404: partition plate 405: second bearing groove

[0077] 406: Magnetic ring groove 407: Base groove

[0078] 408: first connection hole 409: positioning protrusion

[0079] 5: Magnetic ring 6: Stator winding

[0080] 7: Base 8: Retaining ring

[0081] 801: first retaining ring 802: second retaining ring

[0082] 9: Bearing 901: First bearing

[0083] 902: Second bearing 10: Bearing rubber groove

[0084] 1001: First bearing rubber groove 1002: Second bearing rubber groove

[0085] 103: Third bearing rubber groove 11: Gasket

[0086] 12: Motor shaft 1201: Shaft body

[0087] 1202: Threading cavity 1203: First installation slot

[0088] 1204: second mounting groove 1207: first step surface

[0089] 1208: Second step surface 13: Encoder

[0090] 15: Spring 16: Bolt DETAILED DESCRIPTION

[0091] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0092] In order to fully understand the present invention, a detailed description will be provided in the following description. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other embodiments.

[0093] Ordinal numbers such as "first" and "second" cited in the present invention are merely identifications and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of the "second component", and the term "second component" itself does not imply the existence of the "first component".

[0094] It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside" and similar expressions used in the present invention are for illustrative purposes only and are not limiting.

[0095] The invention discloses a rotating mirror motor, a laser radar device and a vehicle.

[0096] Now, exemplary embodiments according to the present invention will be described in more detail with reference to the accompanying drawings.

[0097] like Figure 1 , Figure 2 , Figure 3 As shown, in a preferred embodiment, a rotating mirror motor is a motor with a built-in stator and an external rotor, comprising: a stator 100, a rotor 200 and a bearing 9;

[0098] The stator 100 is a fixed and non-rotatable component in the rotating mirror motor;

[0099] The rotor 200 is a rotatable component in the mirror motor, the stator 100 is arranged inside the rotor 200, and the rotor 200 rotates around the stator 100;

[0100] A plurality of bearings 9 may be provided, and the bearings 9 are provided between the stator 100 and the rotor 200 to support the rotation of the rotor 200;

[0101] The stator 100 and / or the rotor 200 are provided with bearing glue grooves 10 corresponding to the bearing 9 , and the bearing glue grooves 10 are used for applying glue so as to be fixedly connected with the bearing 9 .

[0102] The mirror rotating motor in this embodiment fixes the stator 100 and the bearing 9, and / or the rotor 200 and the bearing 9 by gluing, so as to avoid the influence of interference fit on the structure of the bearing 9, effectively ensure the bearing function, and prevent the rotor assembly from rotational eccentricity or rotational blockage, thereby ensuring the performance of the mirror rotating motor.

[0103] In one embodiment, if Figure 3 As shown, the stator 100 comprises:

[0104] The motor shaft 12 and the bearing 9 are used to carry the rotor 200 so that the rotor 200 can rotate around the motor shaft 12;

[0105] The side wall of the motor shaft 12 is provided with a bearing glue groove 10, and the bearing glue groove 10 is used for applying glue; the motor shaft 12 can be a solid shaft or a hollow shaft;

[0106] The bearing 9 is sleeved on the motor shaft 12, and the bearing glue groove 10 is glued to the inner ring of the bearing to fix the bearing.

[0107] The motor shaft 12 and the bearing 9 are fixedly connected by gluing, so as to avoid the influence of interference fit on the structure of the bearing 9, effectively ensure the bearing function, and the rotor 200 will not have rotation eccentricity or rotation blockage, thereby ensuring the performance of the rotating mirror motor.

[0108] In one embodiment, if Figure 3 As shown, the bearing 9 comprises at least:

[0109] The first bearing 901 is sleeved on the motor shaft 12 , and the side wall of the motor shaft 12 is correspondingly provided with a first bearing adhesive groove 1001 . The first bearing adhesive groove 1001 is glued and bonded to the inner ring of the first bearing 901 , so as to keep it relatively fixed axially with the motor shaft 12 .

[0110] The first bearing 901 may be a deep groove ball bearing, including an inner ring, balls, a cage, an outer ring and other components.

[0111] The glue applied in the first bearing glue groove 1001 is used to fix the inner ring of the first bearing 901 and the motor shaft 12, avoiding the influence of the bearing 9 caused by the interference fit of the bearing, and effectively ensuring the bearing function.

[0112] In one embodiment, if Figure 3 As shown, the rotor 200 also includes:

[0113] The rotor housing 4 is sleeved on the motor shaft 12 and is fixedly connected to at least the outer ring of the first bearing 901 . The rotor housing 4 can rotate around the motor shaft 12 .

[0114] The rotor housing 4 is a component of the rotor of the mirror motor. Since the first bearing 901 and the motor shaft 12 are relatively fixed in the axial direction, the rotor housing 4 is fixedly connected to the outer ring of the first bearing 901 and can be kept relatively fixed in the axial direction with the motor shaft 12 .

[0115] In one embodiment, if Figure 4 , Figure 5 , Figure 6 As shown, the rotor housing 4 includes:

[0116] The shell body 401 is provided with an axial inner cavity, and is sleeved on the motor shaft 12 through the axial inner cavity.

[0117] In one embodiment, the rotor housing 4 further comprises:

[0118] A first bearing groove 402, which is disposed in the axial inner cavity and is used to install a first bearing 901;

[0119] The partition plate 404 is disposed in the axial inner cavity and is located below the first bearing groove 402 , and is used to abut against the lower end of the first bearing 901 .

[0120] The partition plate 404 can support the rotor housing 4 and keep it axially relatively fixed with the motor shaft 12 .

[0121] In one embodiment, if Figure 4 As shown, the bearing rubber groove 10 also includes:

[0122] The third bearing glue groove 103 is arranged on the inner wall of the first bearing groove 402. The third bearing glue groove 103 is glued to the outer ring of the first bearing 901, which can maintain axial relative fixation with the first bearing 901 and further improve the stability of axial relative fixation with the motor shaft 12.

[0123] In one embodiment, if Figure 3 As shown, the stator 100 further includes:

[0124] A gasket 11, which is sleeved on the motor shaft 12 and disposed above the first bearing 901;

[0125] Spring 15 , the spring 15 is disposed between the gasket 11 and the first bearing 901 .

[0126] The spring 15 can be a cylindrical spring or a wave spring, which is used to provide a certain pre-pressure, reduce or even eliminate the axial clearance of the bearing, and avoid shaking in the up and down directions.

[0127] In one embodiment, if Figure 3 , Figure 7 As shown, the stator 100 further includes:

[0128] The retaining ring 8 is fixed on the motor shaft 12 and is used to limit the bearing 9, maintain the relative position relationship between the bearing 9 and the motor shaft 12, and thus maintain the relative position relationship between the rotor 200 and the motor shaft 12. The retaining ring 8 includes at least a first retaining ring 801, which is fixed on the motor shaft 12 and abuts against the upper end of the gasket 11 or the upper end of the first bearing 901.

[0129] The first retaining ring 801 is specifically installed in the first installation groove 1203 on the motor shaft 12. Figure 3 The first retaining ring 801 is fixed on the motor shaft 12 and abuts against the upper end of the gasket 11, and is used to limit the axial position of the gasket 11, the spring 15, and the first bearing 901; Figure 7The first retaining ring 801 is fixed on the motor shaft 12 and abuts against the upper end of the first bearing 901 to limit the axial position of the gasket 11 and the first bearing 901 .

[0130] In one embodiment, if Figure 3 As shown, the bearing 9 also includes:

[0131] The second bearing 902 is sleeved on the motor shaft 12 and is located below the first bearing 901. The side wall of the motor shaft 12 is correspondingly provided with a second bearing glue groove 1002. The second bearing glue groove 1002 is glued and bonded to the inner ring of the second bearing 902, which can keep it relatively fixed axially with the motor shaft 12.

[0132] By providing the first bearing 901 and the second bearing 902, the stability of the motor shaft 12 supporting the rotor 200 can be improved, and the rotor 200 can be prevented from deflecting during rotation. By providing two bearings, the installation accuracy requirements of the motor shaft 12 and the rotor housing 4 can be guaranteed.

[0133] The second bearing 902 may be a deep groove ball bearing, including an inner ring, balls, a retainer, an outer ring and other components.

[0134] The glue applied in the second bearing glue groove 1002 is used to fix the inner ring of the second bearing 902 and the motor shaft 12, avoiding the influence of the bearing 9 caused by the interference fit of the bearing, and effectively ensuring the bearing function.

[0135] In one embodiment, if Figure 4 As shown, the rotor housing 4 also includes:

[0136] A second bearing groove 405, which is disposed in the axial inner cavity and is used to install a second bearing 902;

[0137] The partition plate 404 is disposed in the axial inner cavity and is located between the first bearing groove 402 and the second bearing groove 405 , and is used to abut against the lower end of the first bearing 901 and the upper end of the second bearing 902 .

[0138] In one embodiment, if Figure 7 As shown, the spring 15 is disposed between the partition plate 404 and the second bearing 902 .

[0139] The spring 15 can be a cylindrical spring or a wave spring, which is used to provide a certain pre-pressure, reduce or even eliminate the axial clearance of the bearing, and avoid shaking in the up and down directions.

[0140] In one embodiment, the retaining ring 8 further comprises:

[0141] The second retaining ring 802 is fixed on the motor shaft 12 and abuts against the lower end of the second bearing 902, and limits the two bearings from the upper and lower ends respectively with the first retaining ring 801. The second retaining ring 802 is specifically installed in the second installation groove 1204 on the motor shaft 12.

[0142] In one embodiment, if Figure 3 As shown, the rotor 200 also includes:

[0143] The mirror bracket 3 is sleeved on the rotor housing 4 and can be driven by the rotor housing 4 to rotate around the motor shaft 12;

[0144] The lens 2 is arranged on the outer side wall of the mirror bracket 3 . The lens 2 is a plane reflector. The lens 2 can be a regular or irregular shape, which mainly depends on the shape of the outer side wall of the mirror bracket 3 .

[0145] When the mirror bracket 3 rotates, the lens 2 rotates synchronously, and the laser can be reflected at a preset angle through the lens 2 to achieve the functions of recognition, ranging and positioning within a large angle range.

[0146] The upper surfaces of the mirror bracket 3, the lens 2, and the rotor housing 4 are parallel, and the surface difference value cannot exceed 0.5, otherwise it will cause deviation in the installation of the rotating mirror and the rotating mirror motor, resulting in deviation in the product detection accuracy.

[0147] In one embodiment, if Figure 6 , Figure 7 As shown, the rotor housing 4 also includes a first connecting hole 408, which is arranged at the upper end of the shell body 401, and the mirror bracket 3 includes a second connecting hole, which is arranged at the upper end of the mirror bracket 3. Bolts 16 are installed in the first connecting hole 408 and the second connecting hole to realize the connection between the rotor housing 4 and the mirror bracket 3.

[0148] The first connection hole 408 is a threaded hole, and the second connection hole is a light hole. Multiple first connection holes 408 can be set at the upper end of the shell body 401, and multiple second connection holes can be set at the upper end of the mirror bracket 3 to improve the firmness of the connection between the rotor housing 4 and the mirror bracket 3.

[0149] In one embodiment, if Figure 5 , Figure 6 As shown, the rotor housing 4 also includes a positioning protrusion 409, which is arranged at the upper end of the shell body 401, and the mirror bracket 3 includes a positioning hole, which is arranged at the upper end of the mirror bracket 3. The positioning protrusion 409 is inserted into the positioning hole to realize the positioning of the rotor housing 4 and the mirror bracket 3.

[0150] By providing the positioning protrusion 409 and the positioning hole, on the one hand, it is convenient to connect the rotor housing 4 with the mirror bracket 3 , and on the other hand, the firmness of the connection between the rotor housing 4 and the mirror bracket 3 can be improved.

[0151] In one embodiment, if Figure 7 , Figure 8 As shown, the outer side wall of the mirror bracket 3 is provided with a plurality of mounting surfaces, and each mounting surface is provided with a lens 2 .

[0152] According to design requirements, the outer side wall of the mirror bracket 3 can be provided with four, six, or eight mounting surfaces, each of which is provided with a lens 2 to form a prism module capable of reflecting the laser to a preset angle.

[0153] The lens 2 and the mirror bracket 3 are fixed together by screws or laser welding, and can also be integrated with the mirror bracket 3 by coating, so as to ensure the assembly accuracy of the rotating mirror and the rotating mirror motor, while ensuring the detection accuracy of the laser radar and improving the performance of the product.

[0154] In one embodiment, if Figure 3 As shown, the rotor 200 also includes:

[0155] The encoder 13 is disposed at the upper end of the mirror bracket 3 . The encoder 13 is used to detect the rotation angle of the mirror bracket 3 so as to control the angle of the lens 2 during use.

[0156] The encoder 13 is disposed at the upper end of the mirror bracket 3, which is conducive to achieving the installation accuracy requirements of the prism module and the rotor housing 4, and is also convenient for the automated production of the rotating mirror motor.

[0157] In one embodiment, if Figure 3 , Figure 7 As shown, the stator 100 further includes:

[0158] The stator winding 6 is sleeved on the first step surface 1207 of the motor shaft 12 and is arranged below the second bearing 902 .

[0159] The stator winding 6 is a component of the stator of the rotating mirror motor, and the stator winding 6 may include an iron core and a winding. When the stator winding 6 is energized, a rotating magnetic field may be generated to drive the rotating mirror motor rotor 200 to rotate. The stator winding 6 and the motor shaft 12 may be fixed by gluing or interference fit.

[0160] In one embodiment, if Figure 4 , Figure 7 As shown, the rotor housing 4 further includes a magnetic ring groove 406, and the magnetic ring groove 406 is arranged below the second bearing groove 405;

[0161] The mirror motor further includes a magnetic ring 5 , which is disposed in the magnetic ring groove 406 and corresponds to the stator winding 6 .

[0162] The magnetic ring 5 is a permanent magnet and can be driven by the stator winding 6 . The magnetic ring 5 and the rotor housing 4 can be installed and fixed by gluing or interference fit.

[0163] In one embodiment, if Figure 3 , Figure 4 , Figure 7 As shown, the stator 100 further includes:

[0164] The base 7 is sleeved on the second step surface 1208 of the motor shaft 12 and is arranged below the stator winding 6. The rotor housing 4 is provided with a base groove 407 corresponding to the base 7 to accommodate the base 7.

[0165] The base 7 is used to close the lower end opening of the rotor housing 4. The base 7 and the motor shaft 12 can be installed and fixed by gluing or interference fit.

[0166] In one embodiment, if Fig. 9 , Fig.10 , Fig.11 As shown, the motor shaft 12 includes: a shaft body 1201 and a threading cavity 1202;

[0167] The shaft body 1201 is a stepped shaft, which is convenient for setting components such as stator windings;

[0168] The threading cavity 1202 is disposed in the shaft body 1201 , the first end of the threading cavity 1202 is disposed at the end of the shaft body 1201 , the second end of the threading cavity 1202 is disposed at the side wall of the shaft body 1201 , and the threading cavity 1202 is used to pass the wire harness 1 .

[0169] The first end of the wire harness 1 extends from the first end of the threading cavity 1202 and can be electrically connected to the control device of the rotating mirror motor. The second end of the wire harness 1 extends from the second end of the threading cavity 1202 and can be electrically connected to the stator winding. Because the motor shaft 12 does not rotate in the rotating mirror motor, the stator winding does not rotate either, so the wire harness 1 can be electrically connected to the stator winding and the control device of the rotating mirror motor.

[0170] The motor shaft in this embodiment is convenient for routing the mirror rotating motor by setting a threading cavity in the motor shaft. The wiring harness can enter the mirror rotating motor from the upper end of the motor shaft, which facilitates the electrical connection between the wiring harness and the stator winding and control device of the mirror rotating motor, thereby simplifying the structure of the mirror rotating motor.

[0171] In one embodiment, if Figure 3 , Figure 7 As shown, the mirror motor also includes:

[0172] The wiring harness 1 is arranged in the wire threading cavity 1202 of the motor shaft 12 , and one end of the wiring harness 1 is electrically connected to the stator winding 6 .

[0173] The first end of the wiring harness 1 extends out from the first end of the threading cavity 1202 and can be electrically connected to the control device of the rotating mirror motor. The first end of the wiring harness 1 can be provided with a plug-in terminal for easy electrical connection. The second end of the wiring harness 1 extends out from the second end of the threading cavity 1202 and can be electrically connected to the stator winding 6.

[0174] In one embodiment, if Fig.11 As shown, the threading cavity 1202 is L-shaped as a whole, including a first cavity section and a second cavity section, the first cavity section is arranged along the axial direction of the motor shaft 12, the second cavity section is arranged along the radial direction of the motor shaft 12, and the first cavity section is connected to the second cavity section. The wire harness 1 is laid along the first cavity section and the second cavity section, and the second end of the wire harness 1 extends downward from the second cavity section and can be electrically connected to the stator winding of the rotating mirror motor.

[0175] In one embodiment, if Fig. 9 As shown, the side wall of the shaft body 1201 is provided with at least one mounting groove, and the mounting groove is used to install the retaining ring 8.

[0176] The side wall of the shaft body 1201 in the figure is provided with two installation grooves, namely the first installation groove 1203 and the second installation groove 1204, and two retaining rings can be installed. The first retaining ring 801 is installed in the first installation groove 1203, and the second retaining ring 802 is installed in the second installation groove 1204. The retaining ring 8 is used to limit the bearing 9 to maintain the relative position relationship between the bearing 9 and the motor shaft 12, thereby maintaining the relative position relationship between the rotor 200 and the motor shaft 12.

[0177] In one embodiment, if Fig. 9 As shown, the side wall of the shaft body 1201 is provided with at least one bearing glue groove, and the bearing glue groove is used for applying glue.

[0178] The side wall of the shaft body 1201 in the figure is provided with two bearing glue grooves, namely the first bearing glue groove 1001 and the second bearing glue groove 1002. Glue can be applied in the two grooves to bond and fix the two bearings respectively.

[0179] The first bearing adhesive groove 1001 and the second bearing adhesive groove 1002 are located between the first mounting groove 1203 and the second mounting groove 1204 , which are provided to correspond to two bearings.

[0180] In one embodiment, if Fig. 9 , Fig.11 As shown, the shaft body 1201 is provided with a first step surface 1207 , and the first step surface 1207 is used for mounting the stator winding 6 .

[0181] In one embodiment, if Fig. 9 , Fig.11As shown, the shaft body 1201 is provided with a second step surface 1208 , and the second step surface 1208 is used to install the base 7 . The second step surface 1208 is closer to the end of the shaft body 1201 than the first step surface 1207 .

[0182] In one embodiment, if Fig. 9 , Fig.11 As shown, the outer diameter of the first step surface 1207 is smaller than the outer diameter of the shaft body 1201 , and the outer diameter of the second step surface 1208 is smaller than the outer diameter of the first step surface 1207 .

[0183] An embodiment of the present invention also provides a laser radar device, comprising a rotating mirror motor according to any one of the above embodiments.

[0184] An embodiment of the present invention also provides a vehicle, comprising the laser radar device of any one of the above embodiments.

[0185] A rotating mirror motor, a laser radar device and a vehicle of the present invention have the following characteristics:

[0186] The stator and the bearing, and / or the rotor and the bearing are fixedly connected by gluing, so as to avoid the influence of interference fit on the structure of the bearing, effectively ensure the bearing function, and prevent the rotor assembly from rotating eccentricity or rotational blockage, thereby ensuring the performance of the rotating mirror motor.

[0187] By setting a threading cavity in the motor shaft, the routing of the rotating mirror motor is facilitated. The wiring harness can enter the rotating mirror motor from the upper end of the motor shaft, which facilitates the electrical connection between the wiring harness and the stator winding and control device of the rotating mirror motor, thereby simplifying the structure of the rotating mirror motor.

[0188] By arranging the encoder at the upper end of the mirror bracket, it is helpful to achieve the installation accuracy requirements of the prism module and the rotor housing, and at the same time facilitate the automated production of the rotating mirror motor.

[0189] The processes and steps described in all the above preferred embodiments are only examples. Unless adverse effects occur, various processing operations can be performed in a sequence different from the sequence of the above processes. The sequence of steps in the above processes can also be increased, merged or deleted according to actual needs.

[0190] In understanding the scope of the present invention, the term "comprise" and its derivatives as used herein are intended to be open terms, which specify the existence of recorded features, elements, components, groups, wholes and / or steps, but do not exclude the existence of other unrecorded features, elements, components, groups, wholes and / or steps. This concept also applies to words with similar meanings, such as the terms "include", "have" and their derivatives.

[0191] The terms "attached" or "attached" as used herein include: a configuration where an element is directly secured to another element by directly securing the element to the other element; a configuration where an element is indirectly secured to another element by securing the element to an intermediate member which in turn is secured to the other element; and a configuration where one element is integral with the other element, i.e., one element is substantially a part of the other element. This definition also applies to words with similar meanings such as "connect," "connect," "couple," "mount," "bond," "fix," and their derivatives. Finally, terms of degree such as "substantially," "approximately," and "approximately" as used herein represent the amount of deviation that modifies the term such that the end result will not be significantly changed.

[0192] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. The features described herein in one embodiment may be applied to another embodiment individually or in combination with other features, unless the feature is not applicable or otherwise specified in the other embodiment.

[0193] The present invention has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and description, and are not intended to limit the present invention to the described embodiments. In addition, it can be understood by those skilled in the art that the present invention is not limited to the above-mentioned embodiments, and more variations and modifications can be made according to the teachings of the present invention, and these variations and modifications all fall within the scope of the protection claimed by the present invention.

Claims

1. A mirror rotating motor, characterized in that: include: stator (100); A rotor (200), wherein the stator (100) is arranged inside the rotor (200), and the rotor (200) rotates around the stator (100); a bearing (9), the bearing (9) being disposed between the stator (100) and the rotor (200) and capable of supporting the rotor (200) to rotate; The stator (100) and / or the rotor (200) are provided with bearing glue grooves (10) corresponding to the bearings (9), and the bearing glue grooves (10) are used for applying glue, so as to be fixedly connected to the bearings (9).

2. The mirror rotating motor according to claim 1, characterized in that: The stator (100) comprises: A motor shaft (12), wherein the side wall of the motor shaft (12) is provided with the bearing rubber groove (10); The bearing (9) is sleeved on the motor shaft (12), and the bearing adhesive groove (10) is coated with adhesive to bond the inner ring of the bearing (9) to fix the bearing (9).

3. The mirror rotating motor according to claim 2, characterized in that: The bearing (9) at least comprises: A first bearing (901), wherein the first bearing (901) is sleeved on the motor shaft (12), wherein the bearing adhesive groove (10) comprises a first bearing adhesive groove (1001), wherein the first bearing adhesive groove (1001) is arranged on a side wall of the motor shaft (12), and wherein the first bearing adhesive groove (1001) is coated with adhesive to bond the inner ring of the first bearing (901).

4. The mirror rotating motor according to claim 3, characterized in that: The rotor (200) comprises: A rotor housing (4), wherein the rotor housing (4) is sleeved on the motor shaft (12) and is fixedly connected to at least the outer ring of the first bearing (901); the rotor housing (4) is capable of rotating around the motor shaft (12).

5. The mirror rotating motor according to claim 4, characterized in that: The rotor housing (4) comprises: A shell body (401), wherein the shell body (401) is provided with an axial inner cavity and is sleeved on the motor shaft (12) through the axial inner cavity.

6. The mirror rotating motor according to claim 5, characterized in that: The rotor housing (4) further comprises: A first bearing groove (402), the first bearing groove (402) being arranged in the axial inner cavity and being used for mounting the first bearing (901); A partition plate (404), the partition plate (404) is arranged in the axial inner cavity and located below the first bearing groove (402), and is used to abut against the lower end of the first bearing (901).

7. The mirror rotating motor according to claim 6, characterized in that: The bearing rubber groove (10) further comprises: A third bearing adhesive groove (103), wherein the third bearing adhesive groove (103) is arranged on the inner wall of the first bearing groove (402), and the third bearing adhesive groove (103) is coated with adhesive to bond the outer ring of the first bearing (901).

8. The mirror rotating motor according to claim 6, characterized in that: The stator (100) further comprises: A gasket (11), the gasket (11) being sleeved on the motor shaft (12) and arranged above the first bearing (901); A spring (15), wherein the spring (15) is arranged between the gasket (11) and the first bearing (901).

9. The mirror rotating motor according to claim 8, characterized in that: The stator (100) further comprises: A retaining ring (8), the retaining ring (8) being fixed on the motor shaft (12) and being used for limiting the position of the bearing (9), the retaining ring (8) comprising at least a first retaining ring (801), the first retaining ring (801) being fixed on the motor shaft (12) and abutting against the upper end of the gasket (11) or the upper end of the first bearing (901).

10. The mirror rotating motor according to claim 9, characterized in that: The bearing (9) further comprises: A second bearing (902), wherein the second bearing (902) is sleeved on the motor shaft (12) and is located below the first bearing (901); the bearing adhesive groove (10) further comprises a second bearing adhesive groove (1002), wherein the second bearing adhesive groove (1002) is arranged on the side wall of the motor shaft (12); and the second bearing adhesive groove (1002) is coated with adhesive to bond the inner ring of the second bearing (902).

11. The mirror rotating motor according to claim 10, characterized in that: The rotor housing (4) further comprises a second bearing groove (405), wherein the second bearing groove (405) is arranged in the axial inner cavity and is located below the first bearing groove (402), and is used for mounting the second bearing (902); And / or, the spring (15) is arranged between the partition (404) and the second bearing (902); And / or, the retaining ring (8) further includes a second retaining ring (802), wherein the second retaining ring (802) is fixed on the motor shaft (12) and abuts against the lower end of the second bearing (902).

12. The mirror rotating motor according to claim 5, characterized in that: The rotor (200) further comprises: A mirror bracket (3), wherein the mirror bracket (3) is sleeved on the rotor housing (4) and can be driven by the rotor housing (4) to rotate around the motor shaft (12); A lens (2), wherein the lens (2) is arranged on an outer side wall of the mirror bracket (3).

13. The mirror rotating motor according to claim 12, characterized in that: The rotor housing (4) further comprises a first connection hole (408), the first connection hole (408) being arranged at the upper end of the shell body (401); the mirror bracket (3) comprises a second connection hole, the second connection hole being arranged at the upper end of the mirror bracket (3); bolts (16) are inserted into the first connection hole (408) and the second connection hole to achieve connection between the rotor housing (4) and the mirror bracket (3).

14. The mirror rotating motor according to claim 12, characterized in that: The rotor housing (4) further comprises a positioning protrusion (409), wherein the positioning protrusion (409) is arranged at the upper end of the shell body (401); the mirror bracket (3) comprises a positioning hole, wherein the positioning hole is arranged at the upper end of the mirror bracket (3); the positioning protrusion (409) is inserted into the positioning hole to achieve positioning of the rotor housing (4) and the mirror bracket (3).

15. The mirror rotating motor according to claim 12, characterized in that: The outer side wall of the mirror bracket (3) is provided with a plurality of mounting surfaces, and each mounting surface is provided with one of the lenses (2).

16. The mirror rotating motor according to claim 12, characterized in that: The rotor (200) further comprises: An encoder (13), wherein the encoder (13) is arranged at the upper end of the mirror bracket (3), and the encoder (13) is used to detect the rotation angle of the mirror bracket (3).

17. The mirror rotating motor according to claim 5, characterized in that: The stator (100) further comprises: A stator winding (6), wherein the stator winding (6) is sleeved on the motor shaft (12) and arranged below the bearing (9).

18. The mirror rotating motor according to claim 17, characterized in that: The rotor housing (4) further comprises a magnetic ring groove (406), wherein the magnetic ring groove (406) is arranged in the axial inner cavity; The rotating mirror motor also includes a magnetic ring (5), which is arranged in the magnetic ring groove (406) and corresponds to the stator winding (6).

19. The mirror rotating motor according to claim 2, characterized in that: The motor shaft (12) comprises: Axle body (1201); A threading cavity (1202), wherein the threading cavity (1202) is disposed on the shaft body (1201), wherein a first end of the threading cavity (1202) is disposed on an end portion of the shaft body (1201), and a second end of the threading cavity (1202) is disposed on a side wall of the shaft body (1201), and the threading cavity (1202) is used to pass the wiring harness (1).

20. The mirror rotating motor according to claim 19, characterized in that: Also includes: A wire harness (1), wherein the wire harness (1) is arranged in a wire threading cavity (1202) of the motor shaft (12), and one end of the wire harness (1) is electrically connected to a stator winding (6).

21. The mirror rotating motor according to claim 19, characterized in that: The threading cavity (1202) is L-shaped as a whole, and includes a first cavity section and a second cavity section. The first cavity section is arranged along the axial direction of the motor shaft (12), and the second cavity section is arranged along the radial direction of the motor shaft (12). The first cavity section is connected to the second cavity section.

22. The mirror rotating motor according to claim 19, characterized in that: The side wall of the shaft body (1201) is provided with at least one mounting groove, and the mounting groove is used for mounting a retaining ring (8).

23. The mirror rotating motor according to claim 19, characterized in that: The shaft body (1201) is provided with a first step surface (1207), and the first step surface (1207) is used for installing the stator winding (6).

24. The mirror rotating motor according to claim 23, characterized in that: The shaft body (1201) is provided with a second step surface (1208), and the second step surface (1208) is used to install the base (7), and the second step surface (1208) is closer to the end of the shaft body (1201) than the first step surface (1207).

25. A laser radar device, characterized in that: Comprising a rotating mirror motor according to any one of claims 1-24.

26. A vehicle, characterized in that: Comprising a laser radar device according to claim 25.

Images