CN117614176A - Laser radar motor for multi-angle detection - Google Patents

Laser radar motor for multi-angle detection Download PDF

Info

Publication number
CN117614176A
CN117614176A CN202311553860.3A CN202311553860A CN117614176A CN 117614176 A CN117614176 A CN 117614176A CN 202311553860 A CN202311553860 A CN 202311553860A CN 117614176 A CN117614176 A CN 117614176A
Authority
CN
China
Prior art keywords
detection
circuit board
shell
shaft core
angle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311553860.3A
Other languages
Chinese (zh)
Inventor
邵昭文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Jinyuan Electromechanical Technology Co ltd
Original Assignee
Shenzhen Jinyuan Electromechanical Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Jinyuan Electromechanical Technology Co ltd filed Critical Shenzhen Jinyuan Electromechanical Technology Co ltd
Priority to CN202311553860.3A priority Critical patent/CN117614176A/en
Publication of CN117614176A publication Critical patent/CN117614176A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4816—Constructional features, e.g. arrangements of optical elements of receivers alone
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4817—Constructional features, e.g. arrangements of optical elements relating to scanning
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2786—Outer rotors
    • H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2791—Surface mounted magnets; Inset magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H02K11/22—Optical devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Microelectronics & Electronic Packaging (AREA)

Abstract

The invention discloses a laser radar motor for multi-angle detection, which comprises a mounting shell; the stator assembly comprises a shaft core and a coil assembly arranged outside the shaft core, and the shaft core is arranged on the installation shell; the rotor assembly comprises a rotary shell and a permanent magnet, and the rotary shell is rotatably connected to the shaft core; an optical reflector is arranged outside the rotary shell; the permanent magnet is arranged in the rotary shell and acts with the coil assembly; the rotary shell is provided with a plurality of detection positions which are circumferentially distributed at intervals around the central axis of the shaft core; at least one detection bit is different from the other detection bits; and the detector is arranged on the mounting shell and is used for corresponding to one detection position in the rotation process of the rotating shell so as to send a detection signal. The laser radar motor for multi-angle detection realizes the detection of the rotor angle by arranging a plurality of detection positions on the rotor.

Description

Laser radar motor for multi-angle detection
Technical Field
The invention relates to the technical field of motors, in particular to a laser radar motor for multi-angle detection.
Background
The laser radar motor belongs to the field of automobile laser radar driving technology, and is one electromagnetic device for converting or transmitting electric energy based on electromagnetic induction law. The laser radar mainly comprises a shell, a motor and an optical reflecting mirror, wherein the motor generally adopts an outer rotor motor and mainly comprises a motor shaft, a stator assembly fixedly arranged on the shaft, a rotor assembly rotatably arranged on the shaft and bottom shells fixedly arranged at two ends of the shaft, the rotor assembly comprises a bearing arranged on the shaft and a rotor shell or a rotor yoke arranged outside the bearing, and the optical reflecting mirror is arranged on the periphery of the rotor assembly.
In the existing motor, the rotation angle and the rotation speed of the rotor are generally detected by an encoder structure, and the rotor of the motor rotates once to be detected, so that accurate detection cannot be realized.
Disclosure of Invention
In order to overcome at least one of the defects described in the prior art, the present invention provides a multi-angle detection lidar motor, which realizes the detection of the angle of the rotating housing by arranging a plurality of detection bits on the rotating housing.
The invention adopts the technical proposal for solving the problems that:
a multi-angle detection laser radar motor comprises a motor body,
a mounting shell;
the stator assembly comprises a shaft core and a coil assembly arranged outside the shaft core, and the shaft core is arranged on the installation shell;
the rotor assembly comprises a rotary shell and a permanent magnet, and the rotary shell is rotatably connected to the shaft core; an optical reflector is arranged outside the rotary shell; the permanent magnet is arranged in the rotating shell and acts with the coil assembly; the rotary shell is provided with a plurality of detection positions, and the detection positions are distributed at intervals around the circumference of the central axis of the shaft core; at least one of the detection bits is different from the other detection bits;
and the detector is arranged on the mounting shell and is used for corresponding to one detection position in the rotation process of the rotating shell so as to send a detection signal.
Further, a detection disc is arranged at the bottom end of the rotary shell, and a plurality of detection positions are arranged on the detection disc; the detector is arranged on the bottom wall of the mounting shell.
Further, a plurality of detection gaps are formed in the detection disc, and the calibers of the detection gaps are different; the detector is an optocoupler detector.
Further, the multi-angle detection laser radar motor also comprises a circuit board, wherein the circuit board comprises a first circuit board section and a second circuit board section; the second circuit board section is a flexible board; the outer surface of the second circuit board section is provided with a shielding layer; the first circuit board section is provided with a power supply circuit and the detector, and one end of the second circuit board section is electrically connected with the first circuit board section; the other end of the second circuit board section is formed as an output end; the bottom wall of the mounting shell is provided with a mounting groove, and the first circuit board section is mounted in the mounting groove.
Further, a through groove is formed in the bottom wall of the mounting shell, and the through groove penetrates through the bottom wall of the mounting groove; the first circuit board is provided with a plurality of connecting holes, and the connecting holes are arranged corresponding to the through grooves; the connecting hole is internally used for being connected with a connecting piece in a penetrating way, and the connecting piece is connected to the connecting hole in a penetrating way through the through groove in a penetrating way and is fixed in a riveting way.
Further, a plurality of positioning holes are formed in the first circuit board section, a plurality of positioning columns are arranged on the bottom wall of the mounting groove, and the positioning columns are correspondingly connected to the positioning holes in a penetrating mode one by one, so that the connecting holes are correspondingly arranged in the through grooves.
Further, the first circuit board section is further provided with a plurality of angle sensors, and the plurality of angle sensors are used for detecting the rotation angle of the rotary shell.
Further, a pressing plate is arranged at the top end of the rotary shell, and the pressing plate is sleeved outside the shaft core; the bottom end surface of the pressing plate is convexly provided with a plurality of annular convex ribs, and the annular convex ribs are sequentially distributed at intervals from being close to the shaft core to being far away from the shaft core and are propped against the top end surface of the optical reflector.
Further, a cover plate is further arranged at the top end of the installation shell, the cover plate comprises a connecting frame and two connecting arms, and the connecting frame is sleeved on the peripheral edge of the installation shell and is detachably connected with the installation shell; one end of one connecting arm is connected to one side of the connecting frame, and one end of the other connecting arm is connected to the other side of the connecting frame; the other ends of the two connecting arms are mutually connected and connected to the shaft core, and the two connecting arms are arranged in an included angle.
Further, the outer surface of the rotary shell is provided with an annular groove and a cooling fan, the cooling fan comprises a mounting ring and a plurality of cooling blades, and the mounting ring is sleeved on the annular groove and fixedly connected with the annular groove, so that the cooling blades are distributed on the outer surface of the rotary shell.
Further, the shaft core is connected with the rotating shell through a bearing, and an elastic component which is in compression joint with the top end of the bearing is arranged at the top end of the rotating shell.
In summary, the invention has the following technical effects:
because a plurality of detection positions are arranged on the rotary shell, the detection positions are arranged at intervals in the rotary direction of the rotary shell, the detector on the mounting shell can correspond to different detection positions in the rotary process of the rotary shell, each detection position corresponds to the detector once, the detector can detect the rotary shell to rotate to a corresponding rotation angle of the detection position, multi-angle detection is realized, the angle detection precision is higher, and the angle detection range is wider.
Drawings
FIG. 1 is a cross-sectional view of a motor structure of the present invention;
FIG. 2 is a schematic diagram of the overall appearance and structure of the motor according to the present invention;
FIG. 3 is a schematic diagram of an exploded construction of the motor of the present invention;
FIG. 4 is a schematic view of the structure of the mounting shell of the present invention;
FIG. 5 is a schematic diagram of a circuit board according to the present invention;
FIG. 6 is a schematic structural view of a detection ring according to the present invention;
fig. 7 is a schematic view of a platen structure according to the present invention.
Wherein the reference numerals have the following meanings: 10. a mounting shell; 11. a mounting groove; 12. positioning columns; 13. a through groove; 20. rotating the housing; 21. an annular groove; 22. a pressing plate; 221. a weight port; 222. annular convex ribs; 30. a shaft core; 31. a bearing; 41. a circuit board; 411. a first circuit board segment; 412. a second circuit board segment; 413. positioning holes; 414. a connection hole; 42. a detector; 43. a detection ring; 431. detecting a position; 50. a stator assembly; 60. magnetic steel; 70. an elastic member; 80. a cover plate; 81. a connecting frame; 82. a connecting arm; 90. a heat radiation fan; 91. a mounting ring; 92. a heat radiation blade; 100. an optical mirror.
Detailed Description
For a better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1 to 7, the present invention discloses a laser radar motor for multi-angle detection, which comprises a mounting case 10, a rotor assembly and a stator assembly 50, wherein the stator assembly 50 comprises a shaft core 30 and a coil assembly, the shaft core 30 is mounted on the mounting case, the coil assembly is arranged outside the shaft core, the rotor assembly comprises a permanent magnet (magnetic steel 60 is selected as an embodiment) and a rotating case 20, the rotating case 20 is rotatably mounted on the shaft core 30, the permanent magnet is mounted inside the rotating case and acts with the coil assembly of the stator assembly, a magnetic field acting with the permanent magnet can be generated after the coil assembly is electrified, an optical reflector 100 is mounted outside the rotating case 20 for driving the rotating case 20 connected with the permanent magnet to rotate, and the optical reflector 100 outside the rotating case 20 can be driven to rotate.
The optical reflector 100 can receive the laser beam and realize the transverse scanning of the laser beam in the rotation process, so that the omnibearing environment information is obtained, and the action principle of the specific optical reflector 100 belongs to the prior art and does not belong to the technical content to be protected in the application.
Specifically, the rotary housing 20 is provided with a plurality of detection bits 431, the plurality of detection bits 431 are circumferentially spaced around the central axis of the shaft core 30, and at least one detection bit 431 is different from the other detection bits 431. In addition, the stator assembly 50 is sleeved outside the shaft core 30 and is positioned in the rotary shell 20; and a detector 42, the detector 42 being mounted on the mounting case 10 and adapted to correspond to one of the detection bits 431 during rotation of the rotary case 20 to transmit a detection signal.
Based on the above structure, when the laser radar motor for multi-angle detection of the present invention is used, the stator assembly 50 is powered to drive the permanent magnet of the rotor assembly to rotate, so as to drive the rotating housing 20 to rotate, and further drive the optical reflector 100 to rotate.
Specifically, compared with the prior art, only one detection position 431 is provided to detect in cooperation with the detector 42, so that a detection signal can only be sent at the zero position, and the rotation angle of the optical mirror 100 on the rotary housing 20 can only be controlled by the rotation speed and the rotation number of the motor, so that the control accuracy is not high enough.
Therefore, in the present embodiment, since the rotating housing 20 has the plurality of detecting positions 431, the plurality of detecting positions 431 are spaced apart in the rotating direction of the rotating housing 20, and the detector 42 on the mounting housing 10 can correspond to different detecting positions 431 during the rotating process of the rotating housing 20, each detecting position 431 corresponds to the detector 42 once, and the detector 42 can detect the rotating angle of the rotating housing 20 corresponding to the detecting position 431.
Taking ten detection bits 431 as an example, the ten detection bits 431 are uniformly spaced in the circumferential direction of the rotary housing 20 such that the rotary housing 20 rotates one turn at an angle of 360 degrees 0 One detection bit 431 corresponds to another adjacent detection bit 431 with a rotation angle of 360 DEG 0 /10＝36 0 。
Since at least one of the ten detection bits 431 is different from the other detection bits 431, taking one detection bit 431 as an example from the other nine detection bits 431, one of the different detection bits 431 locates the zero detection bit 431, and the rotation housing 20 is at the initial position at this time when the rotation housing 20 rotates to the zero detection bit 431 corresponds to the detector 42.
Thereafter, the rotary case 20 rotates, and when the rotary case rotates to the second detection position 431 adjacent to the zero point detection position 431, the detector 42 corresponds to the second detection position 431, and the detector 42 sends a detection signal, that is, the rotary case 20 rotates 36 0 Continuing rotation, the detector 42 rotates correspondingly to the third detection position 431, at which time the rotary housing 20 rotates 72 0 And so on, every time the rotary housing 20 rotates 30 0 The detector 42 can send a detection signal once, and the detection of the rotation angle of the rotary housing 20 can be realized by corresponding different detection positions 431 to the detector 42, so that the detection result is more accurate because the detection of the rotation angle is more.
Of course, twelve detection bits 431 may be provided, such that one detection bit 431 corresponds to another adjacent detection bit 431 with a rotation angle of 360 0 /12＝30 0 I.e. every rotation 30 of the rotary housing 20 0 The detector 42 can respond to the corresponding detection bit 431 and send a detection signal once, so that the detected angle range is smaller, and the rotation angle of the optical mirror 100 can be controlled to be within a smaller range.
In addition, detectionThe bits 431 may be five, so that one of the detection bits 431 corresponds to another adjacent detection bit 431 with a rotation angle of 360 0 /5＝72 0 I.e. every rotation 72 of the rotary housing 20 0 The detector 42 can send a detection signal corresponding to the corresponding detection bit 431, and thus the detected angle range is relatively large, and the rotation angle of the optical mirror 100 is controlled within a relatively large range.
Of course, the number of the detection bits 431 may be selectively set according to actual needs.
It should be noted that the principle of the action driving of the magnetic steel 60 structure of the stator assembly 50 including the coil assembly and the rotor assembly belongs to the prior art, and is not subject to the protection of the present application, and will not be described in detail herein.
Further, a detecting disc may be disposed at the bottom end of the rotary housing 20, the plurality of detecting bits 431 may be disposed at the bottom end of the detecting disc, and the detector 42 may be disposed at the bottom wall of the mounting housing 10, so that the detector 42 and the detecting disc are disposed in a space between the bottom wall of the mounting housing 10 and the bottom end of the rotary housing 20, and a relatively closed detecting environment may be formed.
Specifically, the detector 42 is an optocoupler detector, the detection position 431 is a detection notch, and the principle of the function is to realize the transmission of the detection signal by aligning the optical path passing through the detection position 431, and on the basis of this structure, if the assembly environment of the detector 42 and the detection ring 43 is not relatively closed, the optical path interference of the external environment is easily received, and the detection stability of the rotation angle is affected.
Of course, the detector 42 may be a proximity switch as in the prior art, and in this configuration, a corresponding detection sensor may be provided at each detection position 431, and similarly, when the detection position 431 of the rotary housing 20 rotates to the detection switch, the proximity switch may send a detection signal after the detection sensor approaches the proximity switch. In addition, the detector 42 may be a magnetic proximity switch in the prior art, and the corresponding detection sensor may be a magnetic object such as iron or steel, and can generate signal change when approaching the magnetic proximity switch, so as to realize angle detection.
More specifically, in this embodiment, a plurality of detecting notches are provided on the detecting disc, and the angle detection is performed by the detector 42 as an optocoupler detector, and on the basis of this structure, the apertures of the plurality of detecting notches are different, specifically, ten detecting notches are provided,
the diameters of the ten detection gaps are different, the diameters of the ten detection gaps arranged in the rotation direction of the rotary shell 20 can be sequentially reduced, the detection gap with the largest diameter width is taken as a detection zero point, and the rotation angle of the rotary shell 20 corresponding to the detection gap with the second largest diameter width is 36 0 The detector 42 is correspondingly rotated to a detection notch with the third largest caliber width, and the rotary housing 20 is rotated 72 0 Similarly, the smaller the width of the detection gap from the rotating housing 20, the larger the corresponding rotation angle, that is, the corresponding rotation angle of the rotating housing 20 can be directly and accurately measured according to the difference of the widths of the detection gaps corresponding to the detectors 42.
If each detection notch adopts the same width, only the detection notch of the zero point position is set to be larger in caliber width, and the widths of other detection notches are set to be the same, on the basis of the structure, the detector 42 is correspondingly matched with the technology at different detection notches, namely, the rotation of the detector 42 is that the larger position of the detection notch is the zero point position, and the rotation angle is recorded once for each corresponding detection notch and the detector 42, so that the detection of the rotation angle is performed in the mode.
In this embodiment, when each detector 42 rotates to correspond to each detection notch, the rotation angle of the rotating housing 20 corresponding to the position of the detection notch can be directly known when the detector 42 corresponds to the detection notch because the caliber of the detection notch is inconsistent, and the detection notch is directly corresponding to the detector without additionally setting a counting mode, so that the precision is higher.
Of course, it should be noted that, when the detector 42 is an optocoupler detector, since the width of each detection notch is not uniform, the width of the light transmitted by the corresponding detection notch of the optocoupler detector is not uniform, so as to characterize different optical path signals and distinguish different rotation angles.
Further, referring to fig. 3 and 5, the multi-angle detection lidar motor further includes a circuit board 41, the specific circuit board 41 includes a first circuit board section 411 and a second circuit board section 412, the second circuit board section 412 is a flexible board (specifically may be an FPCB board), and a shielding layer is disposed on an outer surface of the second circuit board section 412. In addition, the first circuit board section 411 is provided with a power supply circuit and a detector 42, one end of the second circuit board section 412 is electrically connected with the first circuit board section 411, the other end of the second circuit board section 412 is formed as an output end, the bottom wall of the mounting case 10 is provided with a mounting groove 11, and the first circuit board section 411 is mounted in the mounting groove.
On the basis of this structure, when the circuit structure is assembled, a power supply circuit for supplying power to the stator assembly 50 coil of the motor and a detection circuit of the detector 42 can be integrated on the first circuit board section 411, the first circuit board section 411 is assembled in the mounting groove 11 on the bottom wall of the mounting shell 10, that is, the circuit structure of the motor can be integrated on the first circuit board section 411, the wiring space in the mounting shell can be reduced without additional wiring, and the winding condition can not occur when the rotating shell rotates. Since the second circuit board section 412 employs the flexible circuit board 41, connection with external wiring is facilitated. The first circuit board section 411 is positioned with the mounting groove 11, so that the first circuit board section 411 is prevented from being displaced after assembly, and thus the circuit structure integrated into the first circuit board section 411 is stable.
In addition, a shielding layer may be disposed on the second circuit board section 412, and since the second circuit board section 412 is used to extend out of the mounting case 10 to be connected to an external circuit, and the second circuit board section 412 is a flexible board, it is generally thin in thickness to ensure flexibility thereof, and thus is easily interfered by a magnetic field in an external environment, and thus a shielding layer may be disposed to shield external signals, so that transmission of electrical signals of the first circuit board section 411 and the second circuit board section 412 is not affected.
It should be noted that, the shielding layer may be implemented by using a copper foil structure in the prior art.
Further, in order to facilitate the assembly of the first circuit board section 411 and the mounting groove 11, a through groove 13 may be further provided on the bottom wall of the mounting case 10, and the through groove 13 penetrates through to the bottom wall of the mounting groove 11, a plurality of connection holes 414 are provided on the first circuit board 41, and the plurality of connection holes 414 are provided corresponding to the through groove 13, after the first circuit board section 411 is assembled to the mounting groove 11 of the mounting case 10, since the plurality of connection holes 414 are corresponding to the positions of the through groove 13, a connecting piece may be directly connected to the bottom end of the mounting case 10 in a penetrating manner, and the connecting piece may penetrate through the through groove 13 and then be connected to the connection hole 414 in a penetrating manner and be fixed in a riveting manner, so that the first circuit board section 411 and the mounting case 10 are conveniently fixed, and are fixed in a riveting manner, and the assembly structure is more stable.
Further, a plurality of positioning holes 413 can be further formed in the first circuit board section 411, a plurality of positioning columns 12 are correspondingly formed in the bottom wall of the mounting groove 11, when the first circuit board section 411 is mounted in the mounting shell 10, the positioning columns 12 are correspondingly connected to the positioning holes 413 in a penetrating mode one by one, so that the connecting holes 414 are arranged corresponding to the through grooves 13, positioning assembly of the first circuit board section 411 and the mounting groove 11 is facilitated, and when the assembly is performed, the connecting holes 414 on the first circuit board section 411 do not need to be additionally aligned with the through grooves 13, so that the assembly difficulty is reduced.
Further, the first circuit board segment 411 is further provided with a plurality of angle sensors, which are used for detecting the rotation angle of the rotating housing 20, wherein the angle sensors can be hall sensors in the prior art, and when the rotating housing 20 rotates, the rotating position of the rotating housing 20 can be sensed through the hall sensors, so that the commutation of the current connected to the motor is realized.
Specifically, the state of the current motor motion can be judged through the Hall sensor of the motor, and then the controller controls the three-phase output of the controller to supply power to the motor according to the signals acquired by the Hall sensor, so that the motor can continuously and normally work. Further, the pressing plate 22 may be further disposed at the top end of the rotating housing 20, the pressing plate 22 is sleeved outside the shaft core 30, a plurality of annular ribs 222 are disposed on the bottom end surface of the pressing plate 22 in a protruding manner, and when the shaft core 30 is assembled, the plurality of annular ribs 222 are sequentially distributed at intervals from the position close to the shaft core 30 to the position far away from the shaft core 30, the pressing plate 22 is sleeved outside the shaft core 30, the plurality of annular ribs 222 at the bottom end of the pressing plate 22 can abut against the top end surface of the optical reflector 100, friction force between the pressing plate 22 and the optical reflector 100 is increased, and the rotation of the pressing plate 22 relative to the optical reflector 100 is prevented when the shaft core 30 rotates.
The pressing plate 22 may further be provided with a plurality of weight holes 221, the plurality of weight holes 221 may be circumferentially spaced around the central axis of the rotor, a weight block structure may be disposed in the weight hole 221, a specific weight block may be an iron block or an iron column, etc. and disposed in different hole positions, so that the center of the pressing plate 22 may be adjusted, and the pressing plate 22 may be adjusted to achieve balance adjustment after being assembled to the rotating housing 20, so as to improve the balance stability of the rotation of the rotor assembly.
Further, referring to fig. 1 and 2, the top end of the installation shell 10 is further provided with a cover plate 80, specifically, the cover plate 80 includes a connecting frame 81 and two connecting arms 82, when assembled, the connecting frame 81 is sleeved on the outer periphery of the installation shell 10, and the connecting frame 81 is detachably connected with the installation shell 10, in this embodiment, the outer periphery of the connecting frame 81 and the outer periphery of the installation shell 10 are detachably connected by adopting a bolt or screw structure.
In addition, one end of one connecting arm 82 of the cover plate 80 is connected to one side of the connecting frame 81, one end of the other connecting arm 82 is connected to the other side of the connecting frame 81, the other ends of the two connecting arms 82 are mutually connected and connected to the shaft core 30, and the two connecting arms 82 are arranged at an included angle, so that the cover plate 80 structure of the top end of the mounting shell 10 is provided with an included angle due to the two connecting arms 82, and hollow spaces are necessarily reserved between the connecting arms 82 and the connecting arms 82, so that the weight of the cover plate 80 can be reduced. The specific connecting frame 81 can be arranged in a semicircular shape, and the two connecting arms 82 are respectively connected to two ends of the semicircular shape to form a triangle-like structure, so that the strength of the whole cover plate 80 is not affected, and the weight of the whole machine can be effectively reduced.
Of course, the cover plate in the embodiment is integrally formed by adopting a die casting process, so that the use of connecting pieces is reduced.
Further, the outer surface of the rotary housing 20 may be provided with an annular groove 21 and a cooling fan 90, and the annular groove 21 may form a hollow space on the outer surface of the rotary housing 20, so that the weight of the rotary housing 20 may be reduced. Of course, on the basis of this structure, the heat dissipating fan 90 includes a mounting ring 91 and a plurality of heat dissipating fins 92, and the mounting ring 91 is sleeved on the annular groove 21 and fixedly connected with the annular groove 21, so that the plurality of heat dissipating fins 92 are distributed on the outer surface of the rotary housing 20.
Thus, when the motor is used, since the mounting ring 91 of the cooling fan 90 rotates with the annular groove 21 of the rotary housing 20, the upper and lower mounting positions of the cooling fan 90 can be defined, and the mounting structure of the cooling fan 90 is stable. In addition, after the installation ring 91 is assembled in the annular groove 21, a plurality of cooling blades 92 connected with the installation ring 91 can be distributed on the outer surface of the rotary shell 20, on one hand, the plurality of cooling blades 92 can rotate along with the rotation of the rotary shell 20, so that the disturbance of air flow is realized to guide the heat dissipation in the rotary shell, namely, the dynamic heat dissipation is realized, on the other hand, the cooling blades 92 can be selected to use cooling aluminum sheets, namely, the cooling can be directly realized by self heat conduction performance, the static heat dissipation is realized, and the integral heat dissipation performance of the motor is improved.
Further, the shaft core 30 is connected to the rotary housing 20 through a bearing 31, and an elastic member 70 press-fitted to the tip of the bearing 31 is provided to the tip of the rotary housing 20. Since the shaft core 30 is connected with the rotary housing 20 through the bearing 31, the rotation process of the rotary housing 20 is smoother. In order to prevent the bearing 31 from moving up and down during the rotation, the elastic member 70 pressed against the inner ring of the bearing 31 may be further provided on the rotation housing 20, so as to reduce the vertical movement, and the rotation process is more stable.
It should be noted that the elastic component may be realized by adopting a structure such as a compression spring, a spring or a disc spring in the prior art, and may also be realized by adopting a structure such as an elastic rubber block in the prior art.
The technical means disclosed by the scheme of the invention is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.

Claims (11)

1. A multi-angle detection laser radar motor is characterized by comprising,
a mounting shell;
the stator assembly comprises a shaft core and a coil assembly arranged outside the shaft core, and the shaft core is arranged on the installation shell;
the rotor assembly comprises a rotary shell and a permanent magnet, and the rotary shell is rotatably connected to the shaft core; an optical reflector is arranged outside the rotary shell; the permanent magnet is arranged in the rotating shell and acts with the coil assembly; the rotary shell is provided with a plurality of detection positions, and the detection positions are distributed at intervals around the circumference of the central axis of the shaft core; at least one of the detection bits is different from the other detection bits;
and the detector is arranged on the mounting shell and is used for corresponding to one detection position in the rotation process of the rotating shell so as to send a detection signal.
2. The multi-angle detection lidar motor according to claim 1, wherein a detection disc is provided at a bottom end of the rotation housing, and a plurality of detection positions are provided on the detection disc; the detector is arranged on the bottom wall of the mounting shell.
3. The multi-angle detection lidar motor according to claim 2, wherein the detection plate is provided with a plurality of detection notches, and the apertures of the detection notches are different; the detector is an optocoupler detector.
4. The multi-angle detected lidar motor of claim 2, further comprising a circuit board, the circuit board comprising a first circuit board segment and a second circuit board segment; the second circuit board section is a flexible board; the outer surface of the second circuit board section is provided with a shielding layer; the first circuit board section is provided with a power supply circuit and the detector, and one end of the second circuit board section is electrically connected with the first circuit board section; the other end of the second circuit board section is formed as an output end; the bottom wall of the mounting shell is provided with a mounting groove, and the first circuit board section is mounted in the mounting groove.
5. The multi-angle detection lidar motor of claim 4, wherein the bottom wall of the mounting case is provided with a through groove that penetrates to the bottom wall of the mounting groove; the first circuit board is provided with a plurality of connecting holes, and the connecting holes are arranged corresponding to the through grooves; the connecting hole is used for penetrating the connecting piece, and the connecting piece is penetrated to the connecting hole through the through groove and fixed in a riveting mode.
6. The multi-angle inspection lidar motor of claim 5, wherein the first circuit board section is provided with a plurality of positioning holes, the bottom wall of the mounting groove is provided with a plurality of positioning posts, and the positioning posts are correspondingly connected to the positioning holes in a penetrating manner, so that the connecting holes are correspondingly arranged in the through grooves.
7. The multi-angle detected lidar motor of claim 4, wherein the first circuit board segment is further provided with a plurality of angle sensors for detecting a rotation angle of the rotation housing.
8. The multi-angle detection lidar motor according to any of claims 1 to 7, wherein a pressing plate is arranged at the top end of the rotating housing, and the pressing plate is sleeved outside the shaft core; the bottom end surface of the pressing plate is convexly provided with a plurality of annular convex ribs, and the annular convex ribs are sequentially distributed at intervals from being close to the shaft core to being far away from the shaft core and are propped against the top end surface of the optical reflector.
9. The multi-angle detection lidar motor according to any of claims 1 to 7, wherein a cover plate is further provided at the top end of the installation shell, the cover plate comprises a connecting frame and two connecting arms, and the connecting frame is sleeved on the outer peripheral edge of the installation shell and is detachably connected with the installation shell; one end of one connecting arm is connected to one side of the connecting frame, and one end of the other connecting arm is connected to the other side of the connecting frame; the other ends of the two connecting arms are mutually connected and connected to the shaft core, and the two connecting arms are arranged in an included angle.
10. The multi-angle detection lidar motor of any of claims 1 to 7, wherein an outer surface of the rotating housing is provided with an annular groove and a cooling fan, the cooling fan comprises a mounting ring and a plurality of cooling fins, and the mounting ring is sleeved in the annular groove and fixedly connected with the annular groove, so that the plurality of cooling fins are distributed on the outer surface of the rotating housing.
11. The multi-angle sensing lidar motor according to any of claims 1 to 7, wherein the shaft core is connected to the rotation housing through a bearing, and an elastic member press-fitted to the top end of the bearing is provided at the top end of the rotation housing.
CN202311553860.3A 2023-11-20 2023-11-20 Laser radar motor for multi-angle detection Pending CN117614176A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311553860.3A CN117614176A (en) 2023-11-20 2023-11-20 Laser radar motor for multi-angle detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311553860.3A CN117614176A (en) 2023-11-20 2023-11-20 Laser radar motor for multi-angle detection

Publications (1)

Publication Number Publication Date
CN117614176A true CN117614176A (en) 2024-02-27

Family

ID=89945557

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311553860.3A Pending CN117614176A (en) 2023-11-20 2023-11-20 Laser radar motor for multi-angle detection

Country Status (1)

Country Link
CN (1) CN117614176A (en)

Similar Documents

Publication Publication Date Title
JP3875665B2 (en) Scanning range sensor
US10530222B2 (en) Method and apparatus for detecting the position of a rotor in an electric machine
JP7162590B2 (en) Rotating electrical machines containing magnetic position sensors
US20170174096A1 (en) Feedback for control of a wheel hub motor
CN211674058U (en) Laser radar and robot of sweeping floor
JP2020511926A (en) Axial flux motor with built-in optical encoder
US20240128811A1 (en) Direct drive motor and intelligent device
CN210141445U (en) Cloud platform and shooting device
CN117614176A (en) Laser radar motor for multi-angle detection
US20210278246A1 (en) Rotator position detecting device
CN216625523U (en) Motor and electric bicycle
CN218220306U (en) Rotary joint module
EP3667329B1 (en) Wheel rotation detection component and robotic cleaner
JP2005229698A (en) Brushless motor
CN209471241U (en) A kind of laser radar cradle head device
CN218866096U (en) Rotating mirror assembly and laser radar
CN220171239U (en) Rotary laser radar
CN220874330U (en) Laser radar motor convenient for circuit connection
CN219493764U (en) Three-dimensional scanning cloud platform based on laser radar
CN216900914U (en) Quick pointing mechanism of laser unipolar
CN220338058U (en) Rotating base and rotating laser radar
CN215990478U (en) Motor of laser pipe cutting machine
CN220171236U (en) Rotary laser radar
CN217789580U (en) Stepping motor combination device
CN220542226U (en) Load sensor for vehicle and vehicle

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination