Automobile automatic driving auxiliary device

Abstract

The invention discloses an automobile automatic driving assistance device, and relates to the technical field of driving assistance, the automobile automatic driving assistance device comprises a laser radar body, a side box body, a driving mechanism and a cleaning mechanism, the side box body is arranged on the side surface of the laser radar body, the driving mechanism is arranged in the side box body, and the cleaning mechanism is arranged on the side box body; according to the invention, the laser radar body is extended to abut against the ratchet wheel and the pawl when the temperature is high by using the temperature generated during working of the laser radar body and utilizing the characteristics of the two-way memory spring, and the blades are driven to rotate under the action of wind in the driving process, so that the torsion spring I on the rotating shaft is twisted to store energy; the characteristics of the two-way memory spring are utilized to enable the two-way memory spring to retract to separate the ratchet wheel and the pawl when the temperature is low, the stored energy of the first torsion spring is released to drive the impeller in the water pump to rotate, water in the water tank is sprayed to the diaphragm on the laser radar body through the spray head for washing, and therefore the use effect of spraying to the laser radar body is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of driving assistance, and in particular to an automobile automatic driving assistance device. Background Art

[0002] LiDAR is one of the commonly used devices for assisting in autonomous driving and is widely used in vehicles. The window of LiDAR is a key component located at the front end of the optical path in the LiDAR system. It is mainly used to protect the internal precision optical components from environmental interference while ensuring efficient transmission of laser signals. When dust or mud adheres to the window surface, it will directly reduce the optical transmittance and aggravate the impact of environmental interference such as rain, snow, and strong light. When the LiDAR is contaminated by dust or mud, it needs to be cleaned manually, but the LiDAR is generally installed on the roof. The entire cleaning process is time-consuming, labor-intensive, and unsafe. Summary of the Invention

[0003] The purpose of the present invention is to provide an automatic driving assistance device for a car to overcome the above-mentioned defects in the prior art.

[0004] An automobile automatic driving assistance device includes a laser radar body, a side box, a drive mechanism, and a cleaning mechanism, wherein the side box is provided on the side of the laser radar body;

[0005] The driving mechanism is arranged in the side box body and opens the box door on the side box body under the action of the temperature inside the laser radar body and stores energy under the action of wind;

[0006] The cleaning mechanism is arranged on the side box body and cleans the window piece on the laser radar body with water when the stored energy of the driving mechanism is released.

[0007] Preferably, the driving mechanism includes a guide rod, a two-way memory spring, a rotating shaft, a wind-driven assembly and a one-way motion assembly. The guide rod is arranged on a fixed plate inside the laser radar body and a guide bar is provided on its side. The guide rod is slidably connected to a moving cylinder and a baffle is provided at its outer end. The guide rod is sleeved with a two-way memory spring between the fixed plate and the moving cylinder. The rotating shaft is rotatably connected to the outer wall of the laser radar body. The wind-driven assembly is arranged on the rotating shaft and drives the rotating shaft to rotate. The one-way motion assembly is arranged on the rotating shaft and prevents the rotating shaft from reversing during energy storage under the action of the extrusion block on the moving cylinder. The box door is slidably connected to the air inlet on the side of the side box body, and the top of the box door is connected to the extrusion block through a connecting rope.

[0008] Preferably, the wind driving component includes a support frame, a driving shaft, a first bevel gear, a second bevel gear and blades. The end of the rotating shaft is rotatably connected to the support frame inside the side box and is provided with a first bevel gear. The driving shaft is rotatably connected to the support frame, and a second bevel gear meshing with the first bevel gear is provided at the lower end thereof. The blades are arranged at the upper end of the driving shaft and are facing the air inlet on the side box.

[0009] Preferably, the unidirectional movement component includes a ratchet wheel, a first torsion spring, a ratchet pawl and a second torsion spring. The ratchet wheel is arranged on the rotating shaft. The first torsion spring is sleeved on the rotating shaft, and one end thereof is connected to the lidar body. The other end of the first torsion spring is connected to the ratchet wheel. The ratchet pawl is rotatably connected to the side of the lidar body through a connecting shaft. The second torsion spring is sleeved on the connecting shaft, and one end thereof is connected to the lidar body. The other end of the second torsion spring is connected to the ratchet pawl. The ratchet pawl abuts against the ratchet wheel.

[0010] Preferably, the cleaning mechanism includes a water pump, a water tank and a spray head. The bottom of the water pump is connected to the side box. The impeller in the water pump is connected to the rotating shaft. The water inlet of the water pump is connected to the water tank on the side of the lidar body through a water inlet pipe. The top of the water tank is provided with a water inlet hole equipped with a filter screen. The water outlet of the water pump is provided with a water outlet pipe extending out of the top of the side box. The spray head is installed on the water outlet pipe.

[0011] Preferably, air outlets are symmetrically arranged on both sides of the side box.

[0012] Preferably, there are two guiding strips, which are symmetrically arranged on the guiding rod.

[0013] Preferably, the support frame is of a "U" - shaped structure and the air inlet is arranged facing the air inlet of the side box.

[0014] Preferably, an extrusion inclined surface for driving the ratchet pawl to rotate is provided on the side surface of the extrusion block.

[0015] The beneficial effects achieved by the present invention are as follows:

[0016] In this application, the temperature generated during the operation of the lidar body is utilized. By virtue of the characteristics of the two - way memory spring, when the temperature is high, it elongates to abut the ratchet wheel and the ratchet pawl. Under the action of wind during driving, the blades are driven to rotate, causing the first torsion spring on the rotating shaft to be twisted for energy storage. By virtue of the characteristics of the two - way memory spring, when the temperature is low, it retracts to separate the ratchet wheel and the ratchet pawl. The stored energy of the first torsion spring is released to drive the impeller in the water pump to rotate, so that the water in the water tank is sprayed onto the window piece on the lidar body through the spray head for water washing, thereby improving the usage effect of the lidar body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a side view of the whole of the present invention.

[0018] Figure 2 It is a front view of the entire invention.

[0019] Figure 3 Schematic diagram of the structure of the driving mechanism of the present invention.

[0020] Figure 4 It is a structural schematic diagram of the one-way motion component of the present invention.

[0021] Figure 5 It is a structural schematic diagram of the movable cylinder and the baffle plate of the present invention.

[0022] Figure 6 It is a structural schematic diagram of the movable cylinder and the extrusion block of the present invention.

[0023] In the figure, 1. LiDAR body; 2. Side box; 21. Air inlet; 22. Box door; 23. Air outlet; 3. Driving mechanism; 31. Guide rod; 311. Guide bar; 312. Baffle; 32. Fixed plate; 33. Moving cylinder; 34. Extrusion block; 341. Extrusion slope; 35. Two-way memory spring; 36. Rotating shaft; 37. Wind drive assembly; 371. Support frame; 372. Bevel gear 1; 373. Drive shaft; 374. Bevel gear 2; 375. Blade; 38. One-way motion assembly; 381. Ratchet; 382. Torsion spring 1; 383. Ratchet; 384. Connecting shaft; 385. Torsion spring 2; 39. Connecting rope; 4. Cleaning mechanism; 41. Water pump; 42. Water inlet pipe; 43. Water tank; 44. Water outlet pipe; 45. Sprinkler. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover non-exclusive inclusions.

[0026] References to "embodiments" in this specification mean that specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase "embodiment" appearing in various places in the specification is not necessarily referring to the same embodiment, nor are they independent or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] As Figure 1-6 shown, the present invention provides an automotive autonomous driving assistance device, including a lidar body 1, and further including a side box body 2, a driving mechanism 3 and a cleaning mechanism 4. The side box body 2 is arranged on the side of the lidar body 1, and air outlets 23 are symmetrically arranged on both sides of the side box body 2, so that the air entering the side box body 2 can be discharged.

[0028] The driving mechanism 3 is arranged in the side box body 2 and opens the box door 22 on the side box body 2 under the action of the temperature inside the lidar body 1 and stores energy under the action of the wind. The driving mechanism 3 includes a guide rod 31, a two-way memory spring 35, a rotating shaft 36, a wind driving component 37 and a one-way movement component 38. The guide rod 31 is arranged on a fixing plate 32 inside the lidar body 1, and guide strips 311 are arranged on its side surface. Two guide strips 311 are arranged and symmetrically arranged on the guide rod 31. A moving cylinder 33 is slidably connected to the guide rod 31, and a stop plate 312 is arranged at its outer end. A two-way memory spring 35 is sleeved between the fixing plate 32 and the moving cylinder 33 on the guide rod 31. The rotating shaft 36 is rotatably connected to the outer side wall of the lidar body 1.

[0029] In addition, the wind driving component 37 is arranged on the rotating shaft 36 and drives the rotating shaft 36 to rotate. The wind driving component 37 includes a support frame 371, a driving shaft 373, a bevel gear one 372, a bevel gear two 374 and a blade 375. The end of the rotating shaft 36 is rotatably connected to the support frame 371 inside the side box body 2 and a bevel gear one 372 is installed. The support frame 371 is of a "U" - shaped structure and the air inlet 21 faces the air inlet 21 of the side box body 2. The driving shaft 373 is rotatably connected to the support frame 371, and a bevel gear two 374 meshing with the bevel gear one 372 is arranged at its lower end. The blade 375 is arranged at the upper end of the driving shaft 373 and faces the air inlet 21 on the side box body 2.

[0030] In addition, the one-way motion component 38 is arranged on the rotating shaft 36 and prevents the rotating shaft 36 from reversing when storing energy under the action of the extrusion block 34 on the moving cylinder 33. The one-way motion component 38 includes a ratchet 381, a torsion spring 1 382, ​​a pawl 383 and a torsion spring 2 385. The ratchet 381 is arranged on the rotating shaft 36, the torsion spring 1 382 is sleeved on the rotating shaft 36 and one end of the torsion spring 1 382 is connected to the laser radar body 1, and the other end of the torsion spring 1 382 is connected to the ratchet 381. The pawl 383 is rotatably connected to the side of the laser radar body 1 via a connecting shaft 384. The second torsion spring 385 is sleeved on the connecting shaft 384 and one end of the torsion spring 385 is connected to the laser radar body 1. The other end of the second torsion spring 385 is connected to the pawl 383. The pawl 383 abuts against the ratchet 381. The side of the extrusion block 34 is provided with an extrusion slope 341 for driving the pawl 383 to rotate. The pawl 383 is driven to rotate by the extrusion slope 341 on the extrusion block 34.

[0031] The door 22 is slidably connected to the air inlet 21 on the side of the side box body 2, and the top of the door 22 is connected to the extrusion block 34 via a connecting rope 39;

[0032] It should be noted that the cleaning mechanism 4 is arranged on the side box body 2 and cleans the window piece on the laser radar body 1 with water when the stored energy of the driving mechanism 3 is released. The cleaning mechanism 4 includes a water pump 41, a water tank 43 and a nozzle 45. The bottom of the water pump 41 is connected to the side box body 2, the impeller in the water pump 41 is connected to the rotating shaft 36, the water inlet of the water pump 41 is connected to the water tank 43 on the side of the laser radar body 1 through the water inlet pipe 42, the top of the water tank 43 is provided with a water inlet hole with a filter screen installed, the water outlet of the water pump 41 is provided with a water outlet pipe 44 extending from the top of the side box body 2, and the nozzle 45 is installed on the water outlet pipe 44.

[0033] Specific implementation and principle:

[0034] When the car is driving and the laser radar body 1 is working, the laser radar body 1 releases heat. When the released heat reaches the elongation temperature of the two-way memory spring 35, the two-way memory spring 35 elongates and drives the movable cylinder 33 to move outward along the guide rod 31. The extrusion block 34 on the movable cylinder 33 separates from the pawl 383, and the pawl 383 abuts against the ratchet 381 under the action of the torsion spring 2 385 on the connecting shaft 384. During the movement of the movable cylinder 33, the connecting rope 39 drives the box door 22 at the air inlet 21 of the side box body 2 to move downward, so that the air inlet 21 is opened by the box door 22.

[0035] The wind generated by the vehicle moving forward acts on the blades 375 on the drive shaft 373, driving the bevel gear 2 374 on the drive shaft 373 to rotate, thereby driving the rotating shaft 36 to rotate through the bevel gear 1 372. The ratchet 381 on the rotating shaft 36 moves unidirectionally under the action of the pawl 383, causing the torsion spring 1 382 to be twisted to store energy.

[0036] When the laser radar body 1 stops working, the temperature inside the laser radar body 1 drops. When the temperature drops to the retraction temperature of the two-way memory spring 35, the two-way memory spring 35 retracts and drives the movable cylinder 33 to move inward along the guide rod 31, and drives the pawl 383 to disengage from the ratchet 381 through the extrusion slope 341 on the extrusion block 34. Then, under the torsion action of the torsion spring 382 on the rotating shaft 36, the rotating shaft 36 is driven to reverse, causing the impeller in the water pump 41 to rotate, and the water in the water tank 43 is sprayed through the water inlet pipe 42 through the nozzle 45 on the water outlet pipe 44 to wash the window piece on the laser radar body 1.

[0037] The above-described embodiments of the present invention do not limit the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. An automobile automatic driving assistance device, comprising a laser radar body (1), characterized in that: It also includes a side box (2), a driving mechanism (3) and a cleaning mechanism (4), wherein the side box (2) is arranged on the side of the laser radar body (1); The driving mechanism (3) is arranged in the side box (2) and opens the box door (22) on the side box (2) under the action of the temperature inside the laser radar body (1) and stores energy under the action of wind; The cleaning mechanism (4) is arranged on the side box body (2) and cleans the window sheet on the laser radar body (1) with water when the stored energy of the driving mechanism (3) is released.

2. The automatic driving assistance device for a vehicle according to claim 1, characterized in that: The driving mechanism (3) includes a guide rod (31), a two-way memory spring (35), a rotating shaft (36), a wind drive assembly (37) and a one-way motion assembly (38). The guide rod (31) is arranged on a fixed plate (32) in the laser radar body (1) and a guide bar (311) is provided on its side. A moving cylinder (33) is slidably connected to the guide rod (31) and a baffle (312) is provided on the outer end of the guide rod (31). A two-way memory spring (35) is sleeved between the fixed plate (32) and the moving cylinder (33). The rotating shaft (36) is rotatably connected to the outer wall of the laser radar body (1); the wind drive assembly (37) is provided on the rotating shaft (36) and drives the rotating shaft (36) to rotate; the one-way motion assembly (38) is provided on the rotating shaft (36) and prevents the rotating shaft (36) from reversing when storing energy under the action of the extrusion block (34) on the moving cylinder (33); the box door (22) is slidably connected to the air inlet (21) on the side of the side box body (2); and the top of the box door (22) is connected to the extrusion block (34) through a connecting rope (39).

3. The automatic driving assistance device for a vehicle according to claim 2, characterized in that: The wind drive assembly (37) includes a support frame (371), a drive shaft (373), a bevel gear 1 (372), a bevel gear 2 (374) and a blade (375). The end of the rotating shaft (36) is rotatably connected to the support frame (371) in the side box (2) and is installed with the bevel gear 1 (372). The drive shaft (373) is rotatably connected to the support frame (371) and its lower end is provided with a bevel gear 2 (374) engaged with the bevel gear 1 (372). The blade (375) is provided at the upper end of the drive shaft (373) and is directly opposite to the air inlet (21) on the side box (2).

4. The automatic driving assistance device for a vehicle according to claim 2, characterized in that: The one-way motion component (38) includes a ratchet (381), a torsion spring (382), a pawl (383) and a torsion spring (385). The ratchet (381) is arranged on the rotating shaft (36). The torsion spring (382) is sleeved on the rotating shaft (36) and one end of the torsion spring is connected to the laser radar body (1). The other end of the torsion spring (382) is connected to the ratchet (381). The pawl (383) is rotatably connected to the side of the laser radar body (1) through the connecting shaft (384). The torsion spring (385) is sleeved on the connecting shaft (384) and one end of the torsion spring is connected to the laser radar body (1). The other end of the torsion spring (385) is connected to the pawl (383). The pawl (383) abuts against the ratchet (381).

5. The automatic driving assistance device for a vehicle according to claim 2, characterized in that: The cleaning mechanism (4) includes a water pump (41), a water tank (43) and a spray head (45). The bottom of the water pump (41) is connected to the side box body (2). The impeller in the water pump (41) is connected to a rotating shaft (36). The water inlet of the water pump (41) is connected to the water tank (43) on the side of the lidar body (1) through a water inlet pipe (42). The top of the water tank (43) is provided with a water inlet hole equipped with a filter screen. The water outlet of the water pump (41) is provided with a water outlet pipe (44) extending out of the top of the side box body (2). The spray head (45) is installed on the water outlet pipe (44).

6. The automatic driving assistance device for a vehicle according to claim 2, characterized in that: Air outlets (23) are symmetrically arranged on both sides of the side box body (2).

7. The automatic driving assistance device for a vehicle according to claim 2, characterized in that: There are two guiding strips (311) which are symmetrically arranged on the guiding rod (31).

8. The automatic driving assistance device for a vehicle according to claim 3, characterized in that: The support frame (371) has a "U" - shaped structure and the air inlet (21) faces the air inlet (21) of the side box body (2).

9. The automatic driving assistance device for a vehicle according to claim 4, characterized in that: The side surface of the extrusion block (34) is provided with an extrusion inclined surface (341) for driving the ratchet pawl (383) to rotate.

Images