Wiper system for lidar sensor
By designing wiper systems with elastic materials, bounding units and connecting units, the wiper system of existing systems requires tools and strength to replace and fix wiper lips, the rapid replacement and fixation of wiper lips is achieved, and effective deflection is achieved when encountering obstacles, improving the cleaning performance of the lidar sensor.
Patent Information
- Application Number
- CN202411734975.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-11-30
- Filing Date
- 2024-11-29
- Publication Date
- 2025-05-30
AI Technical Summary
The wiper system of existing lidar sensors requires tools and great strength when replacing wiper lip and fixing wiper system, and it is difficult to effectively deflect when encountering obstacles, affecting cleaning performance.
A wiper system with elastic material wiper lip is designed. Through the design of the bounding unit and the connecting unit, the wiper lip can be quickly replaced and fixed without tools. When encountering obstacles, the deflection of the wiper lip can be achieved to cross the obstacles through the narrowing part of the web and the U-shaped section.
It realizes rapid replacement and fixation of wiper lips, reduces system load, improves cleaning performance, and can effectively deflect when encountering obstacles, ensuring the stable operation of the cleaning system.
Smart Images
Figure CN120056930A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a wiper system for a lidar sensor, a cleaning system for a lidar sensor, and a vehicle. Background Art
[0002] Currently, there are a large number of different solutions for cleaning the surfaces of sensors in the vehicle industry. Since there are more and more sensor surfaces to be cleaned in the vehicle industry and the requirements for cleaning quality are also getting higher and higher, the demand for innovative and reliable sensor surface cleaning methods is constantly growing.
[0003] In the vehicle industry, the continuous weight reduction to reduce fuel consumption, combined with increasingly fierce competition, has put pressure on costs, resulting in an increased demand for cheaper and more efficient automotive components. Summary of the Invention
[0004] The advantages of the wiper system for a lidar sensor according to the present invention having the features of claim 1 compared with known systems are that the wiper lip of the lidar sensor can be replaced by a limiting unit and a connecting unit without tools and without much effort. Another advantage is that the load on the wiper system can be further reduced because, with the help of the web (Stege) of the wiper system, the wiper lip can be further deflected in the presence of obstacles so as to be able to cross the obstacles. Therefore, materials with a longer service life can be used to make the wiper lip, and at the same time, the wiper lip can be deflected towards its connection, thereby generally reducing the elasticity of the wiper lip.
[0005] This is achieved according to the present invention in that the wiper system for a lidar sensor has a wiper lip made of an elastic material. In addition, the wiper lip has a longitudinal extension direction. In addition, the wiper system also has two bridging members, wherein the two bridging members are arranged to be inserted into two voids on the wiper lip along the longitudinal extension direction, wherein the wiper system has a limiting unit which is arranged to be pushed onto the wiper lip along the longitudinal extension direction so as to fix the two bridging members on the wiper lip, wherein the wiper system has a connecting unit which is arranged to form a force-locking and / or form-locking connection with the two bridging members, and wherein the connecting unit is arranged to arrange the wiper system on a cleaning system for a lidar sensor.
[0006] In other words, the wiper lip has two lateral notches into which two bridging elements can be inserted. The bridging elements are held in the notches here, on the one hand by a bounding unit that is sleeved onto the ends along the longitudinal extension direction, and also by a connecting unit that can fasten the wiper system to the cleaning system of the lidar sensor. Preferably, the wiper lip is made of a rubber-like material. Further preferably, the two bridging elements, the bounding unit, and the connecting unit can all be made of plastic, such as PA6. Thus, the bridging elements can have a higher strength than the wiper lip.
[0007] The dependent claims show preferred refinements of the invention.
[0008] Preferably, the two webs have two narrowing portions, wherein the connecting unit is arranged to inhibit the connecting unit from sliding relative to the wiper lip along the longitudinal extension direction by being snap-fitted into the narrowing portions through the connecting unit.
[0009] The advantage of this embodiment is that the wiper lip remains in the field of view of the sensor in order to be able to further improve the cleaning performance. Here, in particular, each web can have a narrowing portion, and the narrowing portions are arranged on the web in particular opposite to each other with respect to the longitudinal extension direction. Further preferably, the connecting unit can have a pin element or a similar element that is arranged to be snap-fitted into the narrowing portion. In addition, the connecting unit forms a force-locking and / or form-locking connection with the web in the narrowing portion in order to thus prevent sliding along the longitudinal extension direction.
[0010] Further preferably, the connecting unit has a U-shaped section, wherein the U-shaped section and the two webs are arranged to provide a form-locking and / or force-locking connection.
[0011] The advantage of this embodiment is that the connecting unit can be fixed relative to the web along two axes by means of the U-shaped section. Thus, the web can be prevented from sliding relative to the connecting unit.
[0012] Further preferably, the connecting unit has a chamfer (Phase) that abuts against the U-shaped section to assist in forming a force-locking and / or form-locking connection.
[0013] The advantage of this embodiment is that the assembly of the connecting unit on the web can be further simplified.
[0014] Preferably, the lengths of the two narrowing portions and the length of the U-shaped section are set such that when the wiper lip moves on the lidar sensor, the deflection degree of the wiper lip relative to the connecting unit is defined.
[0015] The advantage of this embodiment is that if the wiper lip encounters an obstacle and the obstacle adheres to the field of view of the lidar sensor, due to the defined deflection of the wiper lip relative to the connecting unit, there will be no interruption of movement, but the wiper lip can deflect accordingly to cross the obstacle. Here, the degree of deflection can be defined according to the lengths of the two narrowing portions or the length of the U-shaped section, because the longer these two lengths are, the smaller the deflection can be.
[0016] Further preferably, each of the two webs has a first hook element, and the bounding unit has two second hook elements, wherein the two webs form a snap connection between the two webs and the bounding unit by means of the first hook element and the second hook element.
[0017] The advantage of this embodiment is that the snap connection can be achieved by inserting the bounding unit onto the two webs and the wiper lip. Therefore, the bounding unit is detachably assembled on the webs and the wiper lip so that the bounding unit can be replaced.
[0018] Further preferably, the bounding unit has a U-shaped profile, wherein the U-shaped profile is arranged to guide at least one web to form a snap connection.
[0019] The advantage of this embodiment is that the hooking of the first and second hook elements with each other or with other components is reduced or avoided by the U-shaped profile. Here, the bounding unit can have a U-shaped profile on both sides with respect to the moving direction so as to be able to guide the web accordingly.
[0020] Preferably, the bounding unit has two pins, which are arranged to be inserted into two vacancies to form a friction-locking connection between the wiper lip and the bounding unit.
[0021] The advantage of this embodiment is that when the bounding unit is inserted onto the wiper lip by means of the web, a friction-locking connection between the bounding unit and the wiper lip is formed by means of the pins so as to prevent the bounding unit from slipping off the wiper lip or the web.
[0022] Further preferably, the connecting unit has two cut-outs, and clips are respectively arranged in the two cut-outs, and the clips are arranged to form a force-locking and / or form-locking connection with the cleaning system.
[0023] The advantage of this embodiment is that the wiper system can be arranged on the cleaning system of the lidar sensor by means of simple insertion. Another advantage is that the wiper system does not increase or add to the structural height of the cleaning system by means of the cut-outs in which the clips are arranged.
[0024] Further preferably, the clip has an opening width that is greater than the diameter of the fastening point of the clip.
[0025] The advantage of this embodiment is that the opening width forms a certain guiding effect, so that the wiper system can be fastened to the cleaning system more simply accordingly.
[0026] Preferably, the clip has an opening angle between 20° and 30°.
[0027] The advantage of this embodiment is that the guiding effect can be improved by means of the opening angle, so that the wiper system can be fastened to the cleaning system more simply.
[0028] Preferably, the clip has two arms, wherein the tip width of the arm is smaller than the foot width of the arm.
[0029] Another advantage of this embodiment is that the guiding effect of the clip is further improved by means of the adapted tip width and foot width, so as to simplify the assembly of the wiper system on the cleaning system accordingly.
[0030] Preferably, the tip width and foot width of the clip are set to form a resistance for assembling the wiper system between 3 N and 20 N.
[0031] The advantage of this embodiment is that starting from the point where this force is overcome, a clicking sound or a similar sound of the wiper system will occur on the cleaning arm of the cleaning system, so that the assembler can check whether the wiper system is assembled successfully.
[0032] Another aspect of the present invention relates to a cleaning system for a lidar sensor, which has the wiper system as described above and below, wherein the cleaning system is configured to move the wiper system across the field of view of the lidar sensor to clean the field of view.
[0033] Another aspect of the present invention relates to a vehicle, which has the cleaning system as described above and below and / or the wiper system as described above and below. Description of the Drawings
[0034] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the drawings:
[0035] Figures 1 to 9 A wiper system according to an embodiment is shown,
[0036] Figure 10 A cleaning system according to an embodiment is shown,
[0037] Figure 11 A vehicle according to an embodiment is shown. Detailed Description of the Embodiments
[0038] Preferably, all identical components, elements and / or units in all the drawings are provided with the same reference numerals.
[0039] Figure 1 FIG. 1 shows a wiper system 10 according to an embodiment. The wiper system 10 for a lidar sensor 200 preferably has a wiper lip 12 made of an elastic material. Further preferably, the wiper lip 12 has a longitudinal extension direction 14. Preferably, the wiper system has two webs 16, wherein the two webs 16 are arranged to be inserted into two recesses 18 in the wiper lip 12 along the longitudinal extension direction 14, wherein the wiper system 10 has a bounding unit 20 which is arranged to be pushed onto the wiper lip 12 along the longitudinal extension direction 14 to fix the two webs 16 to the wiper lip 12, wherein the wiper system 10 has a connecting unit 22 which is arranged to form a form-fit and / or force-fit connection with the two webs 16, wherein the connecting unit 22 is arranged to arrange the wiper system 10 on a cleaning system 100 for a lidar sensor 200.
[0040] Figure 2a FIG. 2 shows a wiper system 10 according to an embodiment. Figure 2a FIG. 3 shows a cross-section through the wiper system 10 at the height of the connecting unit 22. Preferably, the wiper lip 12 is fastened in the connecting unit 22 by means of two webs 16 which are inserted into two recesses 18 in the wiper lip 12. Preferably, the connecting unit 22 has a U-shaped section 26, in particular on both sides of the wiper lip 12, into which the webs 16 are inserted. In this way, the webs 16 can form their form-fit and / or force-fit connection with the connecting unit 22 and a form-fit and / or force-fit connection with the wiper lip 12.
[0041] Figure 2b FIG. 4 shows a wiper system 10 according to an embodiment. The wiper system 10 here has a configuration similar to that of the wiper system 10 of Figure 2a As can be seen in FIG. 5, the two webs 16 of the wiper system 10 rest in two recesses 18 in the wiper lip 12. The connecting unit 22 is arranged on the two webs 16. Further preferably, the bounding unit 20 can be pushed onto the wiper lip 12 and the webs along the longitudinal extension 16 in the moving direction 14. Figure 2b
[0042] Figure 3 FIG. 6 shows a wiper system 10 according to an embodiment. The wiper system 10 here includes a wiper lip 12 and two webs 16 which preferably have two constrictions 24. The connecting unit 22 can be inserted into the constrictions 24 in order to be able to form a form-fit and / or force-fit connection between the web 16 and the connecting unit 22 as a result. Preferably, the two constrictions 24 have a first length 30 and preferably the U-shaped section 26 has a second length 32. Here, the first length 30 and the second length 32 can be set to define the degree of deflection of the wiper lip 12 relative to the connecting unit 22.
[0043] Figure 4 An embodiment of the wiper system 10 is shown. The wiper system 10 has two webs 16 onto which the limiting unit 20 can be plugged. Here, the limiting unit 20 plugged onto the webs 16 on both sides has two pins 40 which can form a friction-locking connection between the web 16 and the limiting unit 20. Preferably, the limiting unit 20 is plugged onto the web 16 in the direction of movement 14. Further preferably, the web 16 has a narrowing 24 on which the connecting unit 22 can be arranged.
[0044] Figure 5a A wiper system 10 according to an embodiment is shown. The wiper system 10 here includes a wiper lip 12 which is arranged on the connecting unit 22 by means of the web 16 and the recess 18. As can be seen from Figure 5a it, for example, the housing 19 of the connecting unit 22 can be arranged to protect the wiper lip 12 from the environment.
[0045] Figure 5b A wiper system 10 according to an embodiment is shown. As Figure 5a shown, the connecting unit 22 has a U-shaped section 26 for each web 16. Adjacent to the U-shaped section, a bevel 28 can be arranged in order to thus facilitate the insertion of the web 16 into the U-shaped section 26.
[0046] Figure 6 A wiper system 10 according to an embodiment is shown. The wiper system 10 includes a limiting unit 20. Here, the limiting unit 20 has a U-shaped profile 38 on both sides, in particular for each web 16. Further preferably, the limiting unit has two pins 40 in order to be able to form a friction-locking connection with the recess 18 of the wiper lip 12.
[0047] Figure 7a An embodiment of the wiper system 10 is shown. The wiper system 10 has a wiper lip 12 which can be fastened to the connecting unit 22 by means of two webs 16 arranged in the recess 18. Further preferably, the limiting unit 20 is pushed onto the wiper lip and / or the web 16. In addition, the pins 40 in the limiting unit 20 can form a friction-locking connection with the wiper lip 12 in such a way that the pins are inserted into the recess 18, in particular in the direction of movement along the extension direction 14.
[0048] Figure 7b An embodiment of the wiper system 10 is shown. The wiper system 10 here has the same as Figure 7aA wiper system with a similar configuration. Preferably, each web 16 has a first hook element 34. The web 16 can hereby position the wiper lip 12 relative to the bounding unit 20. The bounding unit 20 hereby has a second hook element 36 for each web 16 in order to be able to form a snap connection between the web 16 and the bounding unit 20. In particular, the bounding unit 20 can hereby be pushed onto the web 16 and the wiper lip 12 along the longitudinal extension direction 14 in order to be able to form a snap connection.
[0049] Figure 8 An embodiment of the wiper system 10 is shown. The wiper system 10 includes a connection unit 22. Preferably, the connection unit 22 has two cutouts 42, and a clip 44 is arranged in each cutout respectively. Herein, each clip 44 has an opening width 46, which is greater than the diameter of the fastening point of the clip 44. Further preferably, each clip 44 has an opening angle 48 relative to the longitudinal extension direction of the clip element, in particular the arm 50 of the clip 44, especially an opening angle between 20° and 30°. Further preferably, the clip 44 has two arms 50, and these two arms have a tip width 52 of the arm and a foot width 54 of the arm 50. Preferably, the tip width 52 of the arm 50 is less than the foot width 54 herein. Further preferably, the tip width 52 of the clip 44 and the foot width 54 of the clip 44 are arranged to form a resistance for assembling the wiper system 10 between 3 N and 20 N.
[0050] Figure 9 A wiper system 10 according to an embodiment is shown. The wiper system 10 hereby includes a connection unit 22. As Figure 9 can be seen, the connection unit 22 has cutouts 42 on both sides, and clips 44 are arranged on the cutouts. Herein, each clip 44 has two arms 50. By means of the deflection of the arms 50, the connection unit 22 can be placed or fastened on the cleaning system 100 in particular.
[0051] Figure 10 A cleaning system 100 is shown, which has the wiper system 10 as described above and below.
[0052] Figure 11 A vehicle 300 according to an embodiment is shown. The vehicle 300 preferably has the wiper system 10 as described above and below. Further preferably, the vehicle 300 also has a cleaning system 100 for cleaning the lidar sensor 200. In addition, the vehicle 300 has a lidar sensor 200.
Claims
1. A wiper system (10) for a laser radar sensor (200), comprising: a wiper lip (12) made of elastic material, -in, The wiper lip (12) has a longitudinal extension direction (14), - wherein the wiper system has two webs (16), wherein the two webs (16) are provided for engaging in two recesses (18) of the wiper lip (12) along the longitudinal extension direction (14), wherein the wiper system (10) comprises a delimiting unit (20) which is configured to be pushed onto the wiper lip (12) along the longitudinal extension direction (14) in order to fix the two webs (16) on the wiper lip (12), wherein the windshield wiper system (10) comprises a connecting unit (22) which is provided for forming a non-positive and / or positive connection with the two webs (16), - wherein the connecting unit (22) is provided for arranging the wiper system (10) on a cleaning system (100) for the lidar sensor (200).
2. The wiper system (10) according to claim 1, wherein: The two webs (16) have two constrictions (24), wherein the connecting unit (22) is provided to suppress a sliding of the connecting unit (22) relative to the wiper lip (12) along the longitudinal extension direction (14) by engaging the connecting unit (22) in the constrictions (24).
3. The windshield wiper system (10) according to any one of the preceding claims, wherein: The connecting unit (22) has a U-shaped section (26), wherein the U-shaped section (26) and the two webs (16) are provided for providing a positive and / or non-positive connection.
4. The wiper system (10) according to claim 3, wherein: The connecting unit (22) has a chamfer (28) which bears against the U-shaped section (26) in order to assist in forming the non-positive and / or positive connection.
5. The windshield wiper system (10) according to any one of claims 2 to 4, wherein: The length (30) of the two narrowings (24) and the length (32) of the U-shaped section (26) are arranged to limit a degree of deflection of the wiper lip (12) relative to the connecting unit (22) when the wiper lip (12) is moved on the lidar sensor (200).
6. The windshield wiper system (10) according to any one of the preceding claims, wherein: The two webs (16) each have a first hook element (34), wherein the delimiting unit (20) has two second hook elements (36), wherein the second web (16) forms a hook connection between the second web (16) and the delimiting unit (20) by means of the first hook element (34) and the second hook element (36).
7. The wiper system (10) according to claim 6, wherein: The delimiting unit (20) has a U-shaped profile (38), wherein the U-shaped profile (38) is provided for guiding at least one web (16) in order to form the hook connection.
8. The windshield wiper system (10) according to any one of the preceding claims, wherein: The delimiting unit (20) has two pins (40) which are provided to engage in the two recesses (18) in order to form a frictional connection between the wiper lip (12) and the delimiting unit (20).
9. The windshield wiper system (10) according to any one of the preceding claims, wherein: The connecting unit (22) has two cutouts (42), wherein a clamp (44) is arranged in the two cutouts (42), wherein the clamp (44) is provided for forming a non-positive and / or positive connection with the cleaning system (100).
10. The windshield wiper system (10) according to claim 9, wherein: The clip (44) has an opening width (46) which is greater than the diameter of the fastening point of the clip (44).
11. The windshield wiper system (10) according to any one of claims 9 and 10, wherein: The clamp (44) has an opening angle (48) between 20° and 30°.
12. The windshield wiper system (10) according to any one of claims 9 to 11, wherein: The clip (44) has two arms (50), wherein a tip width (52) of the arms (50) is smaller than a foot width (54) of the arms (50).
13. The wiper system (10) according to claim 12, wherein: A tip width (52) of the clip (44) and a foot width (54) of the clip (44) are configured to form a resistance force between 3 and 20 N for assembling the wiper system (10).
14. A cleaning system (100) for a lidar sensor (200) having a wiper system according to any one of the preceding claims, wherein: The cleaning system (100) is configured to move the wiper system (10) over the field of view (202) of the lidar sensor (200) to clean the field of view (202).
15. Vehicle (300) having a cleaning system (100) according to claim 14 and / or a windshield wiper system (10) according to any one of the preceding claims 1 to 13.