Laser radar

Abstract

The utility model provides a laser radar comprising a housing, a brush motor and a laser radar module, the housing is provided with a first PCB and a guide wheel, the laser radar module comprises a rotating disc and a second PCB, the rotating disc is rotatably assembled on the housing, the second PCB is installed on the rotating disc so as to rotate along with the rotating disc, and the brush motor is connected with the rotating disc. The brush motor is horizontally mounted on the shell, so that a driving shaft of the brush motor and the axial direction of the turntable form an angle, a belt wheel is assembled on the driving shaft of the brush motor, and the guide wheel is positioned between the belt wheel and the turntable; the transmission device further comprises an O-shaped ring, the O-shaped ring is connected to the rotating disc and the belt wheel in a sleeving mode to achieve transmission connection of the rotating disc and the belt wheel, and the O-shaped ring is further wound around the guide wheel to change the transmission direction of the O-shaped ring so as to be matched with rotation of the rotating disc and the belt wheel. The layout size can be reduced to a great extent, and the characteristics of low cost and small space size of the laser radar are realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of laser radar, specifically to the field of domestic consumer level laser radar, further, relate to a kind of laser radar. BACKGROUND

[0002] In the laser radar market field (pointed domestic consumer level laser radar industry), laser radar drive usually has two driving forms, one is brushless motor direct drive mode, the driving structure of this type can miniaturize laser radar direction design, the laser radar structure can greatly reduce the overall product structure installation space of terminal customer, but this type of laser radar structure is due to the higher cost of brushless motor, resulting in lower market share;Another form is the driving mode of brush motor matched with "O" ring (i.e. belt drive structure), but the laser radar with belt drive structure on the market usually has two rotating shafts parallel (i.e. motor rotating shaft and laser radar module center shaft are parallel), which type structure needs certain center distance, which will lead to larger laser radar volume, and occupy larger installation space of terminal customer product. SUMMARY

[0003] Therefore, the utility model provides a kind of laser radar to solve the above problems.

[0004] To achieve the above purpose, the technical scheme provided by the utility model is as follows:

[0005] A kind of laser radar, including shell, brush motor and laser radar module;First PCB board and guide wheel are arranged on the shell, the laser radar module includes turntable and second PCB board, the turntable is rotatably assembled on shell, the second PCB board is installed on the turntable to rotate with the turntable, the brush motor is installed on the shell to make the driving shaft of brush motor and the axial direction of turntable mutually set angle, the driving shaft of brush motor is equipped with pulley, the guide wheel is located between pulley and turntable;Further include O ring, the O ring is sleeved on the turntable and pulley to realize the transmission connection of turntable and pulley, and O ring is also wound on guide wheel to change the transmission direction of O ring, so as to adapt the rotation of turntable and pulley respectively.

[0006] Further, the brush motor is arranged at the outer side of the radial direction of the turntable.

[0007] Further, the axial direction of the guide wheel is parallel to the axial direction of the turntable, and the O ring is located in the two connecting sections between the turntable and the pulley, one of the connecting sections directly connects the turntable and the pulley, and the other connecting section is wound on the guide wheel, so that the two ends thereof adapt the rotation of the turntable and the pulley respectively.

[0008] Further, the shell is provided with a fixed column made of metal, the guide wheel is rotatably sleeved on the fixed column and is in gap cooperation with the fixed column, and the O-shaped ring drives the guide wheel to rotate.

[0009] Further, the shell is provided with a first cavity, a second cavity and a third cavity, the first cavity and the second cavity are oppositely arranged, the center of the first cavity is provided with a mounting shaft column, the third cavity is arranged on the outer side of the first cavity and is in lateral communication with the first cavity, the rotating disc is rotatably assembled on the mounting shaft column through a bearing, the first PCB is arranged on the second cavity, and the brush motor is arranged on the third cavity.

[0010] Further, the inner ring of the bearing is sleeved on the mounting shaft column, the bottom of the mounting shaft column is formed with an abutting boss, the bottom of the inner ring of the bearing is abutted on the abutting boss, and the top of the mounting shaft column is fixedly provided with a fixed ring, and the fixed ring is abutted on the top of the inner ring of the bearing.

[0011] Further, the outer periphery of the fixed ring is uniformly provided with a plurality of tooth portions, the second PCB is arranged above the fixed ring and is provided with a sensor corresponding to the outer periphery of the fixed ring, and the sensor is matched with the outer periphery of the fixed ring to obtain the rotation angle information.

[0012] Further, the outer ring of the bearing is sleeved on the inner side wall of the rotating disc, the center hole of the rotating disc comprises an upper hole section arranged above and a lower hole section arranged below, the hole diameter of the lower hole section is greater than that of the upper hole section, so that a limiting step is formed between the lower hole section and the upper hole section, the outer ring of the bearing is sleeved in the lower hole section of the rotating disc, the top of the outer ring is abutted and limited by the limiting step, and the lower end of the rotating disc is fixedly provided with a check ring abutted on the bottom of the outer ring of the bearing.

[0013] Further, the mounting shaft column has a through hole, the first PCB is provided with a wireless power transmission module extending into the through hole, the second PCB is provided with a wireless power receiving module extending into the through hole, and the wireless power transmission module and the wireless power receiving module are matched to realize wireless power supply for the second PCB.

[0014] Further, the first PCB and the second PCB are both provided with optical communication devices, and wireless communication connection is formed through the optical communication devices.

[0015] Through the technical scheme provided by the utility model, the following beneficial effects are achieved:

[0016] The brush motor is arranged at an angle with the axial direction of the driving shaft and the rotating disc, and a guide wheel is additionally arranged, so that the transmission O-shaped ring is adapted to the rotation of the rotating disc and the pulley, which can greatly reduce the layout volume and realize the characteristics of low cost and small space volume of the laser radar, and has the characteristics of simple structure design and easy realization. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 shows a top view of the laser radar in the embodiment;

[0018] Figure 2 Fig. 2 shows a sectional view along line A-A in the embodiment; Figure 1

[0019] Figure 3 Fig. 3 shows a partial structure schematic view of the laser radar in the embodiment;

[0020] Figure 4 Fig. 4 shows a structure schematic view of the second PCB in the embodiment;

[0021] Figure 5 Fig. 5 shows a structure exploded schematic view of the laser radar in the embodiment. DETAILED DESCRIPTION

[0022] To further illustrate the embodiments, the utility model provides the attached drawings. These drawings are part of the utility model disclosure, which mainly serves to illustrate the embodiments, and can be combined with the related description of the specification to explain the operation principle of the embodiments. With reference to these contents, those skilled in the art should understand other possible embodiments and the advantages of the utility model. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0023] In the description of the present application, the terms "upper", "lower", "left", "right", "front", "back" and the like orientation or position relationship are based on the orientation or position relationship shown in the drawings, which is only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application.

[0024] The utility model will be further described in combination with the drawings and specific embodiments.

[0025] Referring to Figures 1 to 5 ​As shown, the laser radar provided by the embodiment comprises a shell 10, a brush motor 20 and a laser radar module 30; wherein the shell 10 is provided with a first PCB 24 and a guide wheel 23, the laser radar module 30 comprises a rotating disc 31 and a second PCB 32, the rotating disc 31 is rotatably assembled on the shell 10, and the second PCB 32 is installed on the rotating disc 31 to rotate with the rotating disc 31, so that the rotating assembly of the laser radar module 30 is realized. The brush motor 20 is installed horizontally on the shell 10, so that the driving shaft of the brush motor 20 is arranged at an angle with the axial direction of the rotating disc 31. In the specific embodiment, the brush motor 20 is arranged on the outer side of the radial direction of the rotating disc 31, the central axis of the laser radar module 30 is a vertical axis, and the driving shaft of the brush motor 20 is arranged horizontally, and the two are perpendicular to each other.

[0026] The driving shaft of the brush motor 20 is assembled with a pulley 21, and the guide wheel 23 is located between the pulley 21 and the rotating disc 31. Further comprising an O-ring 22, specifically, the O-ring 22 refers to a ring-shaped linear or belt-shaped structure, such as a flat transmission belt or a ring-shaped ring with a solid circular cross section, etc. The O-ring 22 is sleeved on the rotating disc 31 and the pulley 21 to realize the transmission connection of the rotating disc 31 and the pulley 21, and the O-ring 22 is also wound on the guide wheel 23 to change the transmission direction of the O-ring 22, so as to adapt the rotation of the rotating disc 31 and the pulley 21 respectively. As in the specific embodiment, the axial direction of the guide wheel 23 is parallel to the axial direction of the rotating disc 31, and the O-ring 22 is located in two connecting sections between the rotating disc 31 and the pulley 21, one of which directly connects the rotating disc 31 and the pulley 21, that is, the connecting section is located on the plane of the rotating disc 31 and the pulley 21 at the same time, so as to be tangent to the rotating disc 31 and the pulley 21 at the same time; and the other connecting section is wound on the guide wheel 23, so that its two ends adapt the rotation of the rotating disc 31 and the pulley 21 respectively, that is, the first end of the other connecting section is tangent to the rotating disc 31, and the second end of the other connecting section is tangent to the pulley 21. Ensure stable transmission between the pulley 21 and the rotating disc 31, and the O-ring 22 is not easy to separate from the pulley 21 or the rotating disc 31.

[0027] The brush motor 20 is arranged with the driving shaft at an angle with the axial direction of the rotating disc 31, and the guide wheel 23 is additionally provided to make the transmission O-ring 22 adapt the rotation of the rotating disc 31 and the pulley 21 respectively, which can greatly reduce the layout volume, and realize the characteristics of low cost and small space volume of the laser radar; and has the characteristics of simple structure design and easy realization.

[0028] Further, in order to reduce the wear of the guide wheel 23 and the O-shaped ring 22, in the embodiment, a fixed column made of metal is arranged on the shell 10, the guide wheel 23 is rotatably sleeved on the fixed column and forms a gap fit with the fixed column; in this way, the O-shaped ring 22 drives the guide wheel 23 to rotate, thereby reducing the friction loss of the guide wheel 23 and the O-shaped ring 22. At the same time, the guide wheel 23 can rotate relative to the fixed column, and the fixed column made of metal has small friction, which also effectively reduces the wear between the guide wheel 23 and the fixed column. Of course, in other embodiments, the guide wheel 23 and the fixed column can also be connected through a bearing.

[0029] Specifically, the shell 10 is provided with a first cavity 101, a second cavity 102 and a third cavity 103, the first cavity 101 and the second cavity 102 are arranged opposite to each other, the first cavity 101 and the second cavity 102 are distributed above and below, the opening of the first cavity 101 faces upward, and the opening of the second cavity 102 faces downward, the center of the first cavity 101 is provided with a mounting shaft column 11, the third cavity 103 is arranged on the outer side of the first cavity 101 and laterally communicates with the first cavity 101, the rotating disc 31 is rotatably assembled on the mounting shaft column 11 through a bearing 33, specifically, the bearing 33 is preferably a ball bearing, the inner ring of the bearing 33 is sleeved on the mounting shaft column 11, and the outer ring of the bearing 33 is sleeved on the inner side wall of the rotating disc 31. The first PCB board 24 is arranged on the second cavity 102, the brush motor 20 is mounted on the third cavity 103, and the upper opening of the third cavity 103 is covered with a motor cover 13; in this way, the stable assembly of the first PCB board 24, the brush motor 20 and the laser radar module 30 is realized; specifically, the brush motor 20 is powered and controlled by the first PCB board 24.

[0030] Further, in the embodiment, the bottom of the mounting shaft column 11 forms an abutting boss 111, the bottom of the inner ring of the bearing 33 abuts on the abutting boss 111, the top of the mounting shaft column 11 is fixed with a fixed ring 35, and the fixed ring 35 abuts on the top of the inner ring of the bearing 33; in this way, the bearing 33 is fixed on the mounting shaft column 11, and axial deviation of the bearing 33 relative to the shell 10 is prevented.

[0031] More specifically, the outer periphery of the fixing ring 35 is uniformly provided with a plurality of tooth portions 351, the second PCB board 32 is located above the fixing ring 35, and is provided with a sensor 321 corresponding to a circle of tooth portions 351 on the outer periphery of the fixing ring 35, the sensor 321 cooperates with the circle of tooth portions 351 on the outer periphery of the fixing ring 35 to obtain the rotation angle information; that is, when the laser radar module 30 rotates, the sensor 321 determines the rotation angle information by sensing different tooth portions 351; for example, the sensor 321 uses a reflective photoelectric sensor to determine whether the tooth portion 351 is sensed and the number of tooth portions 351 passed, etc. The angle between two adjacent tooth portions 351 is known, and during rotation, as long as the sensor 321 senses the number of tooth portions 351 passed, the rotation angle information can be determined. Of course, the sensor 321 can also use other sensors such as a Hall sensor, and when a Hall sensor is used, a magnet needs to be provided on each tooth portion 351. The tooth portion 351 for angle sensing is directly provided on the fixing ring 35 for fixing the bearing 33, which is a clever structural design, effectively reduces the number of parts, and reduces the cost and volume.

[0032] The central hole 311 of the rotating disc 31 includes an upper hole section located above and a lower hole section located below, the hole diameter of the lower hole section is greater than that of the upper hole section, thereby forming a limiting step between the lower hole section and the upper hole section, the outer ring of the bearing 33 is sleeved in the lower hole section of the rotating disc 31, and the top of the outer ring is limited by the limiting step, the lower end of the rotating disc 31 is fixed with a retainer ring 34, and the retainer ring 34 abuts against the bottom of the outer ring of the bearing 33, so that the bearing 33 is fixed on the rotating disc 31, and axial deviation of the bearing 33 relative to the rotating disc 31 is prevented.

[0033] Further preferably, the mounting shaft column 11 has a through hole 12 passing through the upper and lower portions, the through hole 12 communicates the first cavity 101 and the second cavity 102, the first PCB board 24 is provided with a wireless power transmission module 241 extending into the through hole 12, the second PCB board 32 is provided with a wireless power receiving module 323 extending into the through hole 12, and the wireless power transmission module 241 and the wireless power receiving module 323 cooperate to realize wireless power supply to the second PCB board 32, the wireless power supply module is arranged internally, which effectively avoids the influence of external factors; and the space can be fully utilized to further reduce the volume.

[0034] Further, the first PCB board 24 and the second PCB board 32 are both provided with optical communication devices (the optical communication device of the first PCB board 24 is not shown, and the optical communication device 322 of the second PCB board 32), and wireless communication connection is formed through the optical communication devices, so that the information (such as rotation angle information, radar ranging information, etc.) of the laser radar module 30 is transmitted to the first PCB board 24, and then the information is output to the outside through the external port of the first PCB board 24.

[0035] Specifically, the first PCB board 24 and the second PCB board 32 belong to the prior art, and are mature technologies that have been applied to laser radars, and the specific structural composition and functions will not be further elaborated here.

[0036] The above discloses one of the more preferred schemes in the present application, and of course, in other embodiments, it is not limited thereto. For example, the brush motor 20 can also not be arranged on the outer side of the radial direction of the rotating disc 31, and in the case where space is allowed, the brush motor 20 and the rotating disc 31 can also be arranged in an up-down space layout, etc.

[0037] Although the utility model is specifically shown and introduced in combination with the preferred embodiments, it should be understood by those skilled in the art that various changes can be made to the utility model in form and details without departing from the spirit and scope of the utility model defined in the appended claims, and all of the changes are within the protection scope of the utility model.

Claims

1. A lidar comprising a housing, a brush motor, and a lidar module; wherein: The housing is provided with a first PCB board and a guide wheel, the laser radar module includes a rotating disc and a second PCB board, the rotating disc is rotatably assembled on the housing, the second PCB board is installed on the rotating disc to rotate with the rotating disc, the brush motor is horizontally installed on the housing, so that the driving shaft of the brush motor is arranged at an angle with the axial direction of the rotating disc, a belt wheel is assembled on the driving shaft of the brush motor, and the guide wheel is located between the belt wheel and the rotating disc; further comprising an O-ring, the O-ring is sleeved on the rotating disc and the belt wheel to realize the transmission connection of the rotating disc and the belt wheel, and the O-ring is also wound on the guide wheel to change the transmission direction of the O-ring, so as to adapt the rotation of the rotating disc and the belt wheel respectively.

2. The lidar of claim 1, wherein: The brush motor is arranged on the outer side of the radial direction of the rotating disc.

3. The lidar of claim 2, wherein: The axial direction of the guide wheel is parallel to the axial direction of the rotating disc, and the O-ring is located in two connecting sections between the rotating disc and the belt wheel, one of which directly connects the rotating disc and the belt wheel, and the other is wound on the guide wheel, so that the two ends thereof are adapted to the rotation of the rotating disc and the belt wheel respectively.

4. The lidar of any one of claims 1 or 2 or 3, wherein: The housing is provided with a metal fixing column, the guide wheel is rotatably sleeved on the fixing column and forms a gap with the fixing column; the O-ring drives the guide wheel to rotate.

5. The lidar of claim 1 or 2, wherein: The housing is provided with a first cavity, a second cavity and a third cavity, the first cavity and the second cavity are arranged opposite to each other, the center of the first cavity is provided with a mounting shaft column, the third cavity is arranged on the outer side of the first cavity and is laterally communicated with the first cavity, the rotating disc is rotatably assembled on the mounting shaft column through a bearing, the first PCB board is arranged on the second cavity, and the brush motor is installed on the third cavity.

6. The lidar of claim 5, wherein: The inner ring of the bearing is sleeved on the mounting shaft column, the bottom of the mounting shaft column forms an abutting boss, the bottom of the inner ring of the bearing abuts on the abutting boss, and the top of the mounting shaft column is fixed with a fixing ring, and the fixing ring abuts on the top of the inner ring of the bearing.

7. The lidar of claim 6, wherein: The outer periphery of the fixing ring is uniformly provided with a plurality of tooth portions, the second PCB board is located above the fixing ring, and is provided with a sensor corresponding to a circle of tooth portions on the outer periphery of the fixing ring, and the sensor obtains rotation angle information by cooperating with the circle of tooth portions on the outer periphery of the fixing ring.

8. The lidar of claim 5, wherein: The outer ring of the bearing is sleeved on the inner side wall of the rotating disc; the central hole of the rotating disc includes an upper hole section located above and a lower hole section located below, the hole diameter of the lower hole section is larger than that of the upper hole section, so that a limiting step is formed between the lower hole section and the upper hole section, the outer ring of the bearing is sleeved in the lower hole section of the rotating disc, and the top thereof is limited by the limiting step, and the lower end of the rotating disc is fixed with a check ring, and the check ring abuts on the bottom of the outer ring of the bearing.

9. The lidar of claim 5, wherein: The mounting shaft column has a through accommodating hole, the accommodating hole communicates the first cavity and the second cavity, the first PCB board is provided with a wireless power transmission module extending into the accommodating hole, the second PCB board is provided with a wireless power receiving module extending into the accommodating hole, and the wireless power transmission module and the wireless power receiving module cooperate to realize wireless power supply to the second PCB board.

10. The lidar of claim 1, wherein: The first PCB board and the second PCB board are both provided with optical communication devices, and wireless communication connection is formed through the optical communication devices.

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