Laser radar rotating assembly

Abstract

The utility model relates to a laser radar rotating assembly, which belongs to the technical field of laser radars and comprises a laser radar sweeping robot body, a shell and a laser ranging assembly, the shell and the laser ranging assembly are arranged on the laser radar sweeping robot body, a stator magnetic core is arranged in the shell, a rotor is arranged in the stator magnetic core, and the laser ranging assembly is arranged in the shell. A hollow shaft is placed in the rotor, a commutator sleeves the outer circumferential wall of the hollow shaft, electric brushes are placed on the left side and the right side of the commutator, the laser ranging assembly is fixedly installed on the top surface of the hollow shaft, and an infrared transmitting tube is fixedly installed on the bottom surface of the laser ranging assembly. And an infrared receiving tube is fixedly mounted on the inner bottom wall of the shell. According to the laser radar rotating assembly, under the action of the rotor and the electric brush, brush design is carried out, a direct-current brushless driving chip is omitted, the use cost is reduced, the laser ranging assembly takes electricity from a commutator, magnetic coupling of wireless power supply and direct-current brushless motor driving is avoided, and better EMC performance is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser radars, in particular to a laser radar rotating component. Background Art

[0002] LiDAR is a radar system that emits laser beams to detect characteristic quantities such as the position and speed of a target. Its working principle is to transmit a detection signal to the target, and then compare the received signal reflected from the target with the transmitted signal. After appropriate processing, relevant information about the target can be obtained. LiDAR is a navigation sensor for robots.

[0003] Chinese patent CN211674058U discloses a laser radar and a sweeping robot. The patent discloses a technical solution with a compact structure and long life, which solves the problem that the existing laser radar is large in overall size and the internal space size of the sweeping robot is limited, so that the laser radar can only be placed on the outside of the top surface of the sweeping robot, which easily causes the sweeping robot to be large in size and high in height, and cannot clean under furniture with low base gaps.

[0004] When in use, the device realizes wireless power supply through the magnetic induction between the transmitting coil and the receiving coil, thereby ensuring the service life of the laser radar. However, its use cost is relatively high, and wireless power supply and brushless drive are prone to magnetic interference. Therefore, a laser radar rotating assembly is proposed to solve the above problems. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a laser radar rotating assembly with the advantages of reducing usage costs and reducing magnetic interference. It solves the problem that when the device is in use, wireless power supply is achieved through the magnetic induction between the transmitting coil and the receiving coil, thereby ensuring the service life of the laser radar. However, its usage cost is relatively high, and wireless power supply and brushless drive are prone to magnetic interference.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a laser radar rotating assembly, comprising a laser radar sweeping robot body, a shell and a laser ranging assembly arranged on the laser radar sweeping robot body, wherein a stator core is placed inside the shell.

[0007] A rotor is placed inside the stator core, a hollow shaft is placed inside the rotor, a commutator is mounted on the outer peripheral wall of the hollow shaft, multiple sets of brushes are placed on the left and right sides of the commutator, the laser ranging assembly is fixedly mounted on the top surface of the hollow shaft, an infrared emitting tube is fixedly mounted on the bottom surface of the laser ranging assembly, and an infrared receiving tube is fixedly mounted on the inner bottom wall of the shell.

[0008] Furthermore, the laser ranging component is located inside the housing, and the brushes are symmetrically distributed around the hollow axis.

[0009] Furthermore, the brush is located at the bottom of the rotor, and the laser ranging component draws power from the commutator, which is rectified and filtered before being used by the ranging module.

[0010] Furthermore, the infrared emitting tube and the infrared receiving tube are both located inside the hollow shaft.

[0011] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0012] The laser radar rotating component adopts a brush design through the action of the rotor and brushes, eliminating the need for a DC brushless driver chip and reducing usage costs. The laser ranging component draws power from the commutator, without wireless power supply and magnetic coupling of DC brushless motor drive, and has better EMC performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0015] In the figure: 1 LiDAR sweeping robot body, 2 hollow shaft, 3 stator core, 4 shell, 5 laser ranging component, 6 rotor, 7 commutator, 8 brush, 9 infrared transmitting tube, 10 infrared receiving tube. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] See also Figure 1-2 A laser radar rotating component in this embodiment includes a laser radar sweeping robot body 1, a shell 4 and a laser ranging component 5 arranged on the laser radar sweeping robot body 1, and a stator core 3 is placed inside the shell 4.

[0018] The rotor 6 is placed inside the stator core 3, and the hollow shaft 2 is placed inside the rotor 6. The outer wall of the hollow shaft 2 is covered with a commutator 7. Multiple sets of brushes 8 are placed on the left and right sides of the commutator 7. The laser ranging component 5 is fixedly mounted on the top surface of the hollow shaft 2. The bottom surface of the laser ranging component 5 is fixedly mounted with an infrared emitting tube 9, and the inner bottom wall of the outer shell 4 is fixedly mounted with an infrared receiving tube 10.

[0019] Among them, the laser ranging component 5 is located inside the shell 4, the brushes 8 are distributed symmetrically with the hollow shaft 2 as the center, the brushes 8 are located at the bottom of the rotor 6, the laser ranging component 5 draws power from the commutator 7, and supplies the ranging module with power after rectification and filtering. The infrared transmitting tube 9 and the infrared receiving tube 10 are both located inside the hollow shaft 2.

[0020] Specifically, the external power supply supplies power to the brush 8, and the brush 8 supplies power to the rotor through the commutator 7 to form a magnetic field. At the same time, the contactor lead on the commutator 7 is connected to the upper ranging part for rectification and filtering to complete the power supply function, thereby rotating the hollow shaft 2 and driving the laser ranging component 5 to rotate.

[0021] The working principle of the above embodiment is:

[0022] The external power supply supplies power to the brush 8, and the brush 8 supplies power to the rotor through the commutator 7 to form a magnetic field. At the same time, the contactor lead on the commutator 7 is connected to the upper ranging part for rectification and filtering to complete the power supply function, thereby rotating the hollow shaft 2 and driving the laser ranging component 5 to rotate.

[0023] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0024] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser radar rotating assembly, comprising a laser radar sweeping robot body (1), a housing (4) and a laser ranging assembly (5) arranged on the laser radar sweeping robot body (1), characterized in that: A stator core (3) is placed inside the housing (4); A rotor (6) is placed inside the stator core (3), a hollow shaft (2) is placed inside the rotor (6), a commutator (7) is sleeved on the outer peripheral wall of the hollow shaft (2), and multiple sets of brushes (8) are placed on the left and right sides of the commutator (7), the laser distance measuring component (5) is fixedly mounted on the top surface of the hollow shaft (2), an infrared emitting tube (9) is fixedly mounted on the bottom surface of the laser distance measuring component (5), and an infrared receiving tube (10) is fixedly mounted on the inner bottom wall of the housing (4).

2. The laser radar rotating assembly according to claim 1, characterized in that: The laser distance measuring component (5) is located inside the housing (4), and the brushes (8) are distributed symmetrically with the hollow shaft (2) as the center.

3. The laser radar rotating assembly according to claim 1, characterized in that: The brush (8) is located at the bottom of the rotor (6), and the laser distance measurement component (5) draws power from the commutator (7), which is rectified and filtered before being used by the distance measurement module.

4. The laser radar rotating assembly according to claim 3, characterized in that: The infrared emitting tube (9) and the infrared receiving tube (10) are both located inside the hollow shaft (2).

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