Wiper motor control device of windscreen wiper

Abstract

The invention provides a wiper motor control device of a windscreen wiper, and relates to the technical field of wiper motors, the wiper motor control device comprises a motor shell, a driving mechanism is arranged in the motor shell, and the driving mechanism comprises a second rotating shaft, a first rotating shaft rotationally connected to the inner wall of the motor shell and a sealing shell fixedly connected to the outer surface of the motor shell; the outer surface of the second rotating shaft is fixedly connected with a bearing, the bearing is fixedly connected to the inner wall of the motor shell, and the outer surface of the first rotating shaft is slidably connected with a connecting ring. According to the wiper motor control device of the windscreen wiper, lubricating oil can be sprayed to a bearing, a V-shaped scraping piece is made to be tightly attached to the surface of the bearing, dust and other chippings on the surface of the bearing are swept, the bearing is well maintained, dry abrasion of the bearing caused by lack of lubricating oil is avoided, the part, exposed out of a motor shell, of the bearing is also avoided, and the service life of the bearing is prolonged. And rotation of the second rotating shaft is limited due to blockage of dust and other chippings.

Description

Technical Field

[0001] The present invention relates to the technical field of windshield wiper motors, and specifically to a control device for a windshield wiper motor of a windshield wiper. Background Art

[0002] A windshield wiper, also known as a windscreen wiper or a windshield wiper, is an important component installed on the windshield of an automobile. Under harsh weather conditions such as rainy days, snowy days or foggy days, as well as when there are dust and stains on the windshield during daily driving, the windshield wiper can timely remove these impurities to ensure that the driver has a good line of sight, thereby ensuring driving safety. When in use, the windshield wiper drives a crank-link mechanism through the operation of a windshield wiper motor and drives a wiper arm to move reciprocally, so that the wiper arm sweeps the windshield.

[0003] A control device for a windshield wiper motor disclosed in the Chinese invention patent application publication specification CN115514149A. When one motor fails, the other motor can continue to work, without causing losses due to failures, preventing the motor from malfunctioning and being unable to be used normally during the use process. If it rains and the driver cannot see clearly the road ahead, safety accidents may occur.

[0004] At the output shaft position of the existing windshield wiper motor, a bearing is provided to ensure the smooth rotation of the output shaft. However, part of the bearing is exposed outside the windshield wiper motor. During the long-term operation of the windshield wiper motor, the lubricating oil at the bearing position is likely to be lacking, resulting in dry wear of the bearing. It is also very difficult for the output shaft of the windshield wiper motor to rotate, and even the motor may be burned out. Moreover, dust and other debris will accumulate on the part of the bearing exposed outside the motor housing. These debris are likely to jam the bearing, resulting in the inability of the output shaft to rotate smoothly. Therefore, we propose a control device for a windshield wiper motor to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to make up for the deficiencies of the prior art, and propose a control device for a windshield wiper motor of a windshield wiper. This device can spray lubricating oil on the bearing, make the V-shaped wiper blade closely adhere to the surface of the bearing and clean the dust and other debris on the surface of the bearing, so as to better maintain the bearing, avoid dry wear of the bearing caused by lack of lubricating oil, and also avoid the part of the bearing exposed outside the motor housing from being jammed by dust and other debris, resulting in limited rotation of the second rotating shaft.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: A wiper motor control device for a windshield wiper, comprising a motor housing. Inside the motor housing, a driving mechanism is provided. The driving mechanism includes a second rotating shaft, a first rotating shaft rotatably connected to the inner wall of the motor housing, and a sealing housing fixedly connected to the outer surface of the motor housing. A bearing is fixedly connected to the outer surface of the second rotating shaft, and the bearing is fixedly connected to the inner wall of the motor housing. A connecting ring is slidably connected to the outer surface of the first rotating shaft. One side of the connecting ring close to the second rotating shaft is fixedly connected with a first spring. The end of the first spring away from the connecting ring is fixedly connected with a first clamping seat. The first clamping seat is slidably connected to the outer surface of the first rotating shaft. The end of the second rotating shaft away from the first rotating shaft is fixedly connected with a third clamping seat. One end of the second rotating shaft close to the first clamping seat is fixedly connected with a second clamping seat. The second clamping seat is adapted to the first clamping seat. An electric push rod is fixedly connected to the inner wall of the sealing housing. The telescopic end of the electric push rod is fixedly connected with a pushing ring. The pushing ring is slidably connected to the motor housing. The pushing ring is slidably connected to the outer surface of the connecting ring. A first conical friction transmission block is fixedly connected to the outer surface of the first clamping seat;

[0007] Outside the motor housing, a lubricating mechanism is provided. The lubricating mechanism includes a bearing seat fixedly connected to the outer surface of the motor housing and a lubricating oil tank fixedly connected to the outer surface of the motor housing. A micro oil pump is fixedly connected to the outer surface of the lubricating oil tank. The input end of the micro oil pump is communicated with the lubricating oil tank. The output end of the micro oil pump is fixedly connected with a connecting hose. The end of the connecting hose away from the micro oil pump is fixedly connected with a hollow ring. The hollow ring is rotatably connected to the inner wall of the bearing seat. Three nozzles arranged at equal distances are fixedly connected to the inner wall of the hollow ring. The nozzles are adapted to the bearings. A torsion spring is fixedly connected to the inner wall of the bearing seat. The end of the torsion spring away from the bearing seat is fixedly connected to the outer surface of the hollow ring. Three Z-shaped connecting frames arranged at equal distances are fixedly connected to the outer surface of the hollow ring. Wedge-shaped sliders are fixedly connected to the inner walls of the three Z-shaped connecting frames. Second springs are fixedly connected to the outer surfaces of the three wedge-shaped sliders. The ends of the three second springs away from the wedge-shaped sliders are respectively fixedly connected to the inner walls of the three Z-shaped connecting frames;

[0008] A cleaning mechanism is provided on the outer part of the motor housing. The cleaning mechanism includes a moving frame. A rotating rod is rotatably connected to the inner wall of the moving frame. A second conical friction drive block is fixedly connected to the outer surface of the rotating rod. The second conical friction drive block is adapted to the first conical friction drive block. A driving gear is fixedly connected to the outer surface of the rotating rod. A driven toothed ring is rotatably connected to the inner wall of the moving frame. The driving gear meshes with the driven toothed ring. Three equally spaced V-shaped scraping blades are fixedly connected to the outer surface of the driven toothed ring. All three V-shaped scraping blades are adapted to the bearing. Three equally spaced pushing blocks are fixedly connected to the outer surface of the driven toothed ring. The pushing blocks are adapted to the wedge-shaped sliders.

[0009] Furthermore, the driving mechanism further includes a motor stator fixedly connected to the inner wall of the motor housing. A motor rotor is fixedly connected to the outer surface of the first rotating shaft. The motor rotor is adapted to the motor stator.

[0010] By adopting the above technical solution, through the electromagnetic induction and magnetic field interaction between the motor rotor and the motor stator, electrical energy is converted into mechanical energy to drive the first rotating shaft to rotate.

[0011] Furthermore, two symmetric first limiting sliders are fixedly connected to the inner wall of the connecting ring. Both of the first limiting sliders are slidably connected to the outer surface of the first rotating shaft.

[0012] By adopting the above technical solution, a limiting sliding groove is formed on the surface of the first rotating shaft. The first limiting slider slides in the limiting sliding groove on the surface of the first rotating shaft, enabling the first rotating shaft to drive the connecting ring to rotate when the first rotating shaft rotates.

[0013] Furthermore, two symmetric second limiting sliders are fixedly connected to the inner wall of the first clamping seat. Both of the second limiting sliders are slidably connected to the outer surface of the first rotating shaft.

[0014] By adopting the above technical solution, the limiting sliding groove on the surface of the first rotating shaft is adapted to the second limiting slider, enabling the first rotating shaft to drive the first clamping seat to rotate when the first rotating shaft rotates.

[0015] Furthermore, three equally spaced stoppers are fixedly connected to the outer surface of the bearing seat. The three stoppers are respectively adapted to the three Z-shaped connecting frames.

[0016] By adopting the above technical solution, when the hollow ring rotates, the Z-shaped connecting frame rotates accordingly. When the Z-shaped connecting frame contacts the stopper, the hollow ring cannot continue to rotate.

[0017] Further, four sliding rods arranged at equal distances are fixedly connected to the outer surface of the moving frame. The outer surfaces of the four sliding rods are all slidably connected with fixed tubes, and one ends of the four fixed tubes away from the sliding rods are fixedly connected to the outer surface of the motor housing.

[0018] By adopting the above technical solution, the fixed tubes and the sliding rods play a guiding role in the movement of the moving frame.

[0019] Further, third springs are fixedly connected to one ends of the four sliding rods away from the moving frame, and one ends of the four third springs away from the sliding rods are respectively fixedly connected to the inner walls of the four fixed tubes.

[0020] By adopting the above technical solution, under the elastic force of the third springs, when the first conical friction drive block and the second conical friction drive block move away from each other, the third springs can push the moving frame to move and reset in the direction away from the motor housing.

[0021] Further, the cleaning mechanism further includes a sealing frame fixedly connected to the outer surface of the motor housing, and the sealing frame is slidably connected with the moving frame.

[0022] By adopting the above technical solution, the moving frame and the sealing frame are slidably connected in a sealed manner, avoiding dust from entering the interior of the motor housing through the gap between the moving frame and the sealing frame.

[0023] Further, a transmission mechanism is arranged outside the motor housing. The transmission mechanism includes a detachable transmission frame installed on the outer surface of the motor housing by bolts. A worm is rotatably connected to the inner wall of the detachable transmission frame. One end of the worm close to the motor housing is fixedly connected with a fourth clamping seat, and the fourth clamping seat is adapted to the third clamping seat.

[0024] By adopting the above technical solution, the fourth clamping seat and the third clamping seat are clamped to connect the second rotating shaft and the worm, and the worm can be driven to rotate when the second rotating shaft rotates.

[0025] Further, an external rotating rod is rotatably connected to the inner wall of the detachable transmission frame, and a worm gear is fixedly connected to the outer surface of the external rotating rod. The worm gear is meshed with the worm.

[0026] By adopting the above technical solution, when the worm rotates, it can drive the external rotating rod to rotate through the worm gear. The external rotating rod is connected to the crank connecting rod of the wiper, so as to drive the wiper arm to rotate.

[0027] Compared with the prior art, the wiper motor control device of this wiper has the following beneficial effects:

[0028] 1. By providing a driving mechanism and a lubricating mechanism, the present invention can spray lubricating oil on the bearing during maintenance, avoiding dry wear of the bearing caused by lack of lubricating oil, thus ensuring the smooth rotation of the second rotating shaft. And by providing a torsion spring, a stop block and a Z-shaped connecting frame, under the pushing of the pushing block on the wedge-shaped slider and the Z-shaped connecting frame and the blocking of the stop block on the Z-shaped connecting frame, the hollow ring can rotate reciprocally, and the three nozzles can spray lubricating oil on the bearing in a covering manner, ensuring the lubrication effect of the bearing and solving the problem of the internal burning of the motor housing caused by the lack of bearing lubricating oil.

[0029] 2. By providing a driving mechanism and a cleaning mechanism, the present invention can, after the separation of the first rotating shaft and the second rotating shaft, drive the driven gear ring to approach and rotate towards the motor housing through the transmission of the first conical friction transmission block, the second conical friction transmission block, the rotating rod and the driving gear, so that the V-shaped scraping blade is closely attached to the surface of the bearing and sweeps the dust and other debris on the surface of the bearing, avoiding the limitation of the rotation of the second rotating shaft caused by the jamming of dust and other debris on the part of the bearing exposed outside the motor housing. And when the second rotating shaft rotates normally, the V-shaped scraping blade will move away from the bearing to avoid the V-shaped scraping blade affecting the rotation of the bearing, and can better maintain the bearing.

[0030] Other advantages, objectives and features of the present invention will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be learned from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0032] Figure 2 is a split structural schematic diagram of the third clamping seat and the fourth clamping seat of the present invention;

[0033] Figure 3 is an internal structural schematic diagram of the motor housing of the present invention;

[0034] Figure 4 is a three-dimensional structural schematic diagram of the first rotating shaft, the second rotating shaft and the bearing of the present invention;

[0035] Figure 5 is a split structural schematic diagram of the first clamping seat, the second clamping seat, the connecting ring and the pushing ring of the present invention;

[0036] Figure 6 is a split structural schematic diagram of the first rotating shaft, the connecting ring and the first clamping seat of the present invention;

[0037] Figure 7 is a split structural schematic diagram of the moving frame and the sealing frame of the present invention;

[0038] Figure 8 Schematic three-dimensional structure diagram of the carrier seat and the lubricating oil tank of the present invention;

[0039] Figure 9 Schematic exploded view of the carrier seat, torsion spring and hollow ring of the present invention;

[0040] Figure 10 Schematic internal structure diagram of the moving frame of the present invention;

[0041] Figure 11 Schematic three-dimensional structure diagram of the driving gear and the driven gear ring of the present invention;

[0042] Figure 12 Schematic three-dimensional structure diagram of the wedge-shaped slider and the push block of the present invention.

[0043] In the figure:

[0044] 1. Motor housing;

[0045] 2. Driving mechanism; 21. First rotating shaft; 22. Second rotating shaft; 23. Bearing; 24. Connecting ring; 25. First spring; 26. First clamping seat; 27. Second clamping seat; 28. Sealing shell; 29. Electric push rod; 210. Push ring; 211. First conical friction transmission block; 212. Motor rotor; 213. Motor stator; 214. Third clamping seat; 215. First limiting slider; 216. Second limiting slider;

[0046] 3. Lubricating mechanism; 31. Carrier seat; 32. Lubricating oil tank; 33. Micro oil pump; 34. Connecting hose; 35. Hollow ring; 36. Sprayer; 37. Torsion spring; 38. Stopper; 39. Z-shaped connecting frame; 310. Wedge-shaped slider; 311. Second spring;

[0047] 4. Cleaning mechanism; 41. Moving frame; 42. Rotating rod; 43. Second conical friction transmission block; 44. Driving gear; 45. Driven gear ring; 46. V-shaped wiper; 47. Fixed pipe; 48. Sliding rod; 49. Third spring; 410. Push block; 411. Sealing frame;

[0048] 5. Transmission mechanism; 51. Detachable transmission frame; 52. Worm; 53. Fourth clamping seat; 54. External rotating rod; 55. Worm gear. Detailed implementation manners

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0050] Please refer to Figures 1 to 12 , the present invention provides the following implementation scheme: A wiper motor control device of a windshield wiper, including a motor housing 1, a driving mechanism 2 is arranged inside the motor housing 1, the driving mechanism 2 includes a second rotating shaft 22, a first rotating shaft 21 rotatably connected to the inner wall of the motor housing 1, and a sealing housing 28 fixedly connected to the outer surface of the motor housing 1. A bearing 23 is fixedly connected to the outer surface of the second rotating shaft 22, and the bearing 23 is fixedly connected to the inner wall of the motor housing 1. The setting of the bearing 23 can make the rotation between the second rotating shaft 22 and the motor housing 1 smoother.

[0051] Please refer specifically to Figure 3 , Figure 4 , Figure 5 and Figure 6 , a connecting ring 24 is slidably connected to the outer surface of the first rotating shaft 21. One side of the connecting ring 24 close to the second rotating shaft 22 is fixedly connected with a first spring 25. One end of the first spring 25 away from the connecting ring 24 is fixedly connected with a first clamping seat 26. When the first clamping seat 26 and the second clamping seat 27 are connected to each other, the first spring 25 is in a compressed state, so that the connection between the first clamping seat 26 and the second clamping seat 27 is tighter. And when the first clamping seat 26 and the second clamping seat 27 are not aligned, the first clamping seat 26 rotates and under the elastic force of the first spring 25, it is ensured that the first clamping seat 26 and the second clamping seat 27 are aligned and connected subsequently. When the first conical friction transmission block 211 contacts the second conical friction transmission block 43, the first spring 25 is in a stretched state, ensuring the tightness of the contact between the first conical friction transmission block 211 and the second conical friction transmission block 43.

[0052] Please refer specifically to Figure 4 , Figure 5 and Figure 6, the first clamping seat 26 is slidably connected to the outer surface of the first rotating shaft 21. One end of the second rotating shaft 22 away from the first rotating shaft 21 is fixedly connected with a third clamping seat 214, and one end of the second rotating shaft 22 close to the first clamping seat 26 is fixedly connected with a second clamping seat 27. The second clamping seat 27 is adapted to the first clamping seat 26. The mutual clamping between the first clamping seat 26 and the second clamping seat 27 enables the second rotating shaft 22 to rotate when the first rotating shaft 21 rotates. The inner wall of the sealing shell 28 is fixedly connected with an electric push rod 29, and the telescopic end of the electric push rod 29 is fixedly connected with a pushing ring 210. The pushing ring 210 is slidably connected to the motor housing 1, and the pushing ring 210 is slidably connected to the outer surface of the connecting ring 24. The outer surface of the first clamping seat 26 is fixedly connected with a first conical friction transmission block 211.

[0053] Please refer particularly to Figure 3 and Figure 4 , the driving mechanism 2 further includes a motor stator 213 fixedly connected to the inner wall of the motor housing 1. The outer surface of the first rotating shaft 21 is fixedly connected with a motor rotor 212. The motor rotor 212 is adapted to the motor stator 213. Through the electromagnetic induction and magnetic field interaction between the motor rotor 212 and the motor stator 213, electrical energy is converted into mechanical energy to drive the first rotating shaft 21 to rotate.

[0054] Please refer particularly to Figure 6 , the inner wall of the connecting ring 24 is fixedly connected with two symmetric first limit sliders 215. Both of the two first limit sliders 215 are slidably connected to the outer surface of the first rotating shaft 21. The first rotating shaft 21 is provided with limit sliding grooves on its surface. The sliding of the first limit sliders 215 in the limit sliding grooves on the surface of the first rotating shaft 21 enables the first rotating shaft 21 to drive the connecting ring 24 to rotate when the first rotating shaft 21 rotates.

[0055] Please refer particularly to Figure 6 , the inner wall of the first clamping seat 26 is fixedly connected with two symmetric second limit sliders 216. Both of the two second limit sliders 216 are slidably connected to the outer surface of the first rotating shaft 21. The limit sliding grooves on the surface of the first rotating shaft 21 are adapted to the second limit sliders 216, so that the first rotating shaft 21 can drive the first clamping seat 26 to rotate when the first rotating shaft 21 rotates.

[0056] Please refer particularly to Figure 1 , Figure 7 , Figure 8 , Figure 9 and Figure 12, a lubrication mechanism 3 is provided outside the motor housing 1. The lubrication mechanism 3 includes a carrier seat 31 fixedly connected to the outer surface of the motor housing 1 and a lubricating oil tank 32 fixedly connected to the outer surface of the motor housing 1. A micro oil pump 33 is fixedly connected to the outer surface of the lubricating oil tank 32. The input end of the micro oil pump 33 is communicated with the lubricating oil tank 32. The output end of the micro oil pump 33 is fixedly connected with a connecting hose 34. One end of the connecting hose 34 away from the micro oil pump 33 is fixedly connected with a hollow ring 35. The hollow ring 35 is rotatably connected to the inner wall of the carrier seat 31. Three equally spaced nozzles 36 are fixedly connected to the inner wall of the hollow ring 35. The nozzles 36 are adapted to the bearing 23. A torsion spring 37 is fixedly connected to the inner wall of the carrier seat 31. One end of the torsion spring 37 away from the carrier seat 31 is fixedly connected to the outer surface of the hollow ring 35. Three equally spaced Z-shaped connecting frames 39 are fixedly connected to the outer surface of the hollow ring 35. Wedge-shaped sliders 310 are fixedly connected to the inner walls of the three Z-shaped connecting frames 39. Second springs 311 are fixedly connected to the outer surfaces of the three wedge-shaped sliders 310. One ends of the three second springs 311 away from the wedge-shaped sliders 310 are respectively fixedly connected to the inner walls of the three Z-shaped connecting frames 39. The second springs 311 are relatively stiff. When the Z-shaped connecting frame 39 is not blocked by the block 38, the pushing block 410 can push the wedge-shaped slider 310 and the Z-shaped connecting frame 39 to rotate. When the Z-shaped connecting frame 39 is blocked by the block 38, the pushing block 410 will push the wedge-shaped slider 310 to slide into the Z-shaped connecting frame 39 through the inclined surface of the wedge-shaped slider 310.

[0057] Please refer specifically to Figure 9 , three equally spaced blocks 38 are fixedly connected to the outer surface of the carrier seat 31. The three blocks 38 are respectively adapted to the three Z-shaped connecting frames 39. When the hollow ring 35 rotates, the Z-shaped connecting frame 39 rotates accordingly. When the Z-shaped connecting frame 39 contacts the block 38, the hollow ring 35 cannot continue to rotate.

[0058] Please refer specifically to Figure 3 , Figure 7 , Figure 10 , Figure 11 and Figure 12, a cleaning mechanism 4 is arranged outside the motor housing 1. The cleaning mechanism 4 includes a moving frame 41. A rotating rod 42 is rotatably connected to the inner wall of the moving frame 41. A second conical friction transmission block 43 is fixedly connected to the outer surface of the rotating rod 42. The second conical friction transmission block 43 is adapted to the first conical friction transmission block 211. A driving gear 44 is fixedly connected to the outer surface of the rotating rod 42. A driven toothed ring 45 is rotatably connected to the inner wall of the moving frame 41. The driving gear 44 meshes with the driven toothed ring 45. Three equally spaced V-shaped scraping blades 46 are fixedly connected to the outer surface of the driven toothed ring 45. All three V-shaped scraping blades 46 are adapted to the bearing 23. When the V-shaped scraping blades 46 clean the bearing 23, they will closely adhere to the surface of the bearing 23. When the bearing 23 does not need to be maintained, the V-shaped scraping blades 46 will move away from the bearing 23 to avoid affecting the rotation of the bearing 23. There is a certain angle between the V-shaped scraping blades 46 and the bearing 23 and between the V-shaped scraping blades 46 and the reserved groove of the moving frame 41, so that when the V-shaped scraping blades 46 scrape and clean the bearing 23 and the reserved groove of the moving frame 41, dust and other debris can move outwards. Three equally spaced pushing blocks 410 are fixedly connected to the outer surface of the driven toothed ring 45. The pushing blocks 410 are adapted to the wedge-shaped sliding blocks 310.

[0059] Please refer particularly to Figure 10 , four equally spaced sliding rods 48 are fixedly connected to the outer surface of the moving frame 41. The outer surfaces of the four sliding rods 48 are all slidably connected to fixed tubes 47. One end of the four fixed tubes 47 far from the sliding rods 48 is fixedly connected to the outer surface of the motor housing 1. The fixed tubes 47 and the sliding rods 48 play a guiding role for the movement of the moving frame 41.

[0060] Please refer particularly to Figure 10 , one end of the four sliding rods 48 far from the moving frame 41 is fixedly connected with a third spring 49. One end of the four third springs 49 far from the sliding rods 48 is respectively fixedly connected to the inner walls of the four fixed tubes 47. Under the elastic force of the third spring 49, when the first conical friction transmission block 211 and the second conical friction transmission block 43 move away from each other, the third spring 49 can push the moving frame 41 to move and reset in a direction away from the motor housing 1.

[0061] Please refer particularly to Figure 2 and Figure 7 , the cleaning mechanism 4 further includes a sealing frame 411 fixedly connected to the outer surface of the motor housing 1. The sealing frame 411 is slidably connected to the moving frame 41. The moving frame 41 and the sealing frame 411 are slidably connected in a sealed manner to prevent dust from entering the interior of the motor housing 1 through the gap between the moving frame 41 and the sealing frame 411.

[0062] Please refer particularly to Figure 1 and Figure 2, a transmission mechanism 5 is provided outside the motor housing 1. The transmission mechanism 5 includes a detachable transmission frame 51 installed on the outer surface of the motor housing 1 by bolts. A worm 52 is rotatably connected to the inner wall of the detachable transmission frame 51. One end of the worm 52 close to the motor housing 1 is fixedly connected to a fourth clamping seat 53. The fourth clamping seat 53 is adapted to the third clamping seat 214. The engagement between the fourth clamping seat 53 and the third clamping seat 214 can connect the second rotating shaft 22 and the worm 52, and enable the worm 52 to rotate when the second rotating shaft 22 rotates.

[0063] Please refer particularly to Figure 2 , an external rotating rod 54 is rotatably connected to the inner wall of the detachable transmission frame 51. A worm gear 55 is fixedly connected to the outer surface of the external rotating rod 54. The worm gear 55 meshes with the worm 52. When the worm 52 rotates, it can drive the external rotating rod 54 to rotate through the worm gear 55. The external rotating rod 54 is connected to the crank-link of the windshield wiper, thereby driving the windshield wiper arm to rotate.

[0064] Working principle: When maintenance of the bearing 23 is required, the electric push rod 29 is controlled to contract, driving the pushing ring 210 and the connecting ring 24 to move away from the second rotating shaft 22. Under the connection action of the first spring 25, the first clamping seat 26 moves away from the second clamping seat 27, and the connecting ring 24 will be stretched. At the same time, the first conical friction drive block 211 moves away from the second rotating shaft 22 and contacts the second conical friction drive block 43. The first conical friction drive block 211 will push the second conical friction drive block 43 to move slightly away from the driving gear 44, causing the moving frame 41, the driven gear ring 45 and the V-shaped scraping blade 46 to move towards the bearing 23. The V-shaped scraping blade 46 clings to the surface of the bearing 23. And through the rotation of the first rotating shaft 21, under the transmission action of the first conical friction drive block 211, the second conical friction drive block 43, the rotating rod 42 and the driving gear 44, the driven gear ring 45 and the V-shaped scraping blade 46 are driven to rotate. The V-shaped scraping blade 46 will clean the surface of the bearing 23. At this time, the third spring 49 is compressed. While the V-shaped scraping blade 46 is cleaning, the micro oil pump 33 is controlled to operate, so that the micro oil pump 33 pumps out the lubricating oil in the lubricating oil tank 32, and sprays the lubricating oil onto the bearing 23 through the connecting hose 34, the hollow ring 35 and the nozzle 36. While the driven gear ring 45 is rotating, the pushing block 410 rotates and pushes the wedge-shaped slider 310 and the Z-shaped connecting frame 39, causing the hollow ring 35 to rotate. The torsion spring 37 will also be stressed. When the Z-shaped connecting frame 39 is blocked by the stopper 38, the Z-shaped connecting frame 39 cannot continue to rotate. The pushing block 410 pushes the wedge-shaped slider 310 into the Z-shaped connecting frame 39 through the inclined surface of the wedge-shaped slider 310. At this time, the second spring 311 is compressed. When the pushing block 410 crosses the wedge-shaped slider 310, the hollow ring 35 rotates in the reverse direction under the elastic force of the torsion spring 37, and the second spring 311 will also push the wedge-shaped slider 310 to reset. Then the next pushing block 410 contacts the wedge-shaped slider 310 and pushes the wedge-shaped slider 310 and the hollow ring 35 to rotate again, so that the hollow ring 35 rotates reciprocally, enabling the nozzle 36 to spray the lubricating oil on the surface of the bearing 23 in a covering manner to ensure uniform lubrication. This device can spray lubricating oil on the bearing 23, make the V-shaped scraping blade 46 cling to the surface of the bearing 23 and clean the dust and other debris on the surface of the bearing 23, and perform better maintenance on the bearing 23, avoiding dry wear of the bearing 23 caused by lack of lubricating oil, and also avoiding the part of the bearing 23 exposed outside the motor housing 1 from being stuck by dust and other debris, resulting in limited rotation of the second rotating shaft 22.

[0065] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention.

Claims

1. A wiper motor control device for a windshield wiper, comprising a motor housing (1), characterized in that: A driving mechanism (2) is arranged inside the motor housing (1), and the driving mechanism (2) comprises a second rotating shaft (22), a first rotating shaft (21) rotatably connected to the inner wall of the motor housing (1), and a sealing shell (28) fixedly connected to the outer surface of the motor housing (1); a bearing (23) is fixedly connected to the outer surface of the second rotating shaft (22); the bearing (23) is fixedly connected to the inner wall of the motor housing (1); a connecting ring (24) is slidably connected to the outer surface of the first rotating shaft (21); a first spring (25) is fixedly connected to a side of the connecting ring (24) close to the second rotating shaft (22); an end of the first spring (25) away from the connecting ring (24) is fixedly connected to a first clamping seat (26); the first clamping seat (26) is slidably connected to the outer surface of the first rotating shaft (21); The second rotating shaft (22) is connected to the outer surface of the first rotating shaft (21); the end of the second rotating shaft (22) away from the first rotating shaft (21) is fixedly connected to the third clamping seat (214); the end of the second rotating shaft (22) close to the first clamping seat (26) is fixedly connected to the second clamping seat (27); the second clamping seat (27) is adapted to the first clamping seat (26); the inner wall of the sealing shell (28) is fixedly connected to the electric push rod (29); the telescopic end of the electric push rod (29) is fixedly connected to the pushing ring (210); the pushing ring (210) is slidably connected to the motor housing (1); the pushing ring (210) is slidably connected to the outer surface of the connecting ring (24); the outer surface of the first clamping seat (26) is fixedly connected to the first conical friction transmission block (211); A lubricating mechanism (3) is arranged outside the motor housing (1), and the lubricating mechanism (3) comprises a bearing seat (31) fixedly connected to the outer surface of the motor housing (1) and a lubricating oil tank (32) fixedly connected to the outer surface of the motor housing (1); a micro oil pump (33) is fixedly connected to the outer surface of the lubricating oil tank (32); an input end of the micro oil pump (33) is connected to the lubricating oil tank (32); an output end of the micro oil pump (33) is fixedly connected to a connecting hose (34); an end of the connecting hose (34) away from the micro oil pump (33) is fixedly connected to a hollow ring (35); the hollow ring (35) is rotatably connected to the inner wall of the bearing seat (31); and the inner wall of the hollow ring (35) is fixedly connected to Three nozzles (36) are arranged at equal distances, and the nozzles (36) are matched with the bearing (23). The inner wall of the bearing seat (31) is fixedly connected with a torsion spring (37). The end of the torsion spring (37) away from the bearing seat (31) is fixedly connected to the outer surface of the hollow ring (35). The outer surface of the hollow ring (35) is fixedly connected with three Z-shaped connecting frames (39) arranged at equal distances. The inner walls of the three Z-shaped connecting frames (39) are fixedly connected with wedge-shaped sliders (310). The outer surfaces of the three wedge-shaped sliders (310) are fixedly connected with second springs (311). The ends of the three second springs (311) away from the wedge-shaped sliders (310) are respectively fixedly connected to the inner walls of the three Z-shaped connecting frames (39). A cleaning mechanism (4) is arranged outside the motor housing (1), and the cleaning mechanism (4) comprises a moving frame (41), the inner wall of the moving frame (41) is rotatably connected to a rotating rod (42), the outer surface of the rotating rod (42) is fixedly connected to a second conical friction transmission block (43), the second conical friction transmission block (43) is adapted to the first conical friction transmission block (211), the outer surface of the rotating rod (42) is fixedly connected to a driving gear (44), and the moving frame (41) is rotatably connected to a rotating rod (42). The inner wall of the frame (41) is rotatably connected to a driven gear ring (45), the driving gear (44) is meshed with the driven gear ring (45), the outer surface of the driven gear ring (45) is fixedly connected to three equidistantly arranged V-shaped scrapers (46), the three V-shaped scrapers (46) are all matched with the bearing (23), and the outer surface of the driven gear ring (45) is fixedly connected to three equidistantly arranged push blocks (410), the push blocks (410) are matched with the wedge-shaped slider (310).

2. The wiper motor control device of a windshield wiper according to claim 1, characterized in that: The driving mechanism (2) further comprises a motor stator (213) fixedly connected to the inner wall of the motor housing (1); the outer surface of the first rotating shaft (21) is fixedly connected to a motor rotor (212); the motor rotor (212) is adapted to fit the motor stator (213).

3. The wiper motor control device of a windshield wiper according to claim 1, characterized in that: Two symmetrical first limit sliders (215) are fixedly connected to the inner wall of the connecting ring (24), and the two first limit sliders (215) are both slidably connected to the outer surface of the first rotating shaft (21).

4. The wiper motor control device of a windshield wiper according to claim 1, characterized in that: Two symmetrical second limiting slide blocks (216) are fixedly connected to the inner wall of the first clamping seat (26), and the two second limiting slide blocks (216) are both slidably connected to the outer surface of the first rotating shaft (21).

5. The wiper motor control device of a windshield wiper according to claim 1, characterized in that: The outer surface of the bearing seat (31) is fixedly connected with three stoppers (38) arranged at equal distances, and the three stoppers (38) are respectively matched with three Z-shaped connecting frames (39).

6. The wiper motor control device of a windshield wiper according to claim 1, characterized in that: The outer surface of the movable frame (41) is fixedly connected to four sliding rods (48) arranged at equal distances, the outer surfaces of the four sliding rods (48) are slidably connected to fixed tubes (47), and the ends of the four fixed tubes (47) away from the sliding rods (48) are fixedly connected to the outer surface of the motor housing (1).

7. The wiper motor control device of a windshield wiper according to claim 6, characterized in that: One end of the four sliding rods (48) away from the moving frame (41) is fixedly connected to a third spring (49), and one end of the four third springs (49) away from the sliding rods (48) is fixedly connected to the inner walls of the four fixed tubes (47).

8. The wiper motor control device of a windshield wiper according to claim 1, characterized in that: The cleaning mechanism (4) further comprises a sealing frame (411) fixedly connected to the outer surface of the motor housing (1), and the sealing frame (411) is slidably connected to the movable frame (41).

9. The wiper motor control device of a windshield wiper according to claim 1, characterized in that: A transmission mechanism (5) is arranged outside the motor housing (1), and the transmission mechanism (5) comprises a detachable transmission frame (51) mounted on the outer surface of the motor housing (1) by means of bolts, a worm (52) is rotatably connected to the inner wall of the detachable transmission frame (51), and a fourth clamping seat (53) is fixedly connected to one end of the worm (52) close to the motor housing (1), and the fourth clamping seat (53) is adapted to the third clamping seat (214).

10. The wiper motor control device of a windshield wiper according to claim 9, characterized in that: The inner wall of the detachable transmission frame (51) is rotatably connected to an external rotating rod (54), the outer surface of the external rotating rod (54) is fixedly connected to a worm wheel (55), and the worm wheel (55) is meshed with the worm (52).

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