Method for operating a wiper device and vehicle
By adjusting the wiper speed according to the opening parameters of the vehicle window glass and convertible roof, the problem of difficult wiper speed when the window glass is opened is solved, improving operating comfort and safety, and ensuring cleaning effect.
Patent Information
- Application Number
- CN202411020720.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-07-28
- Filing Date
- 2024-07-29
- Publication Date
- 2025-02-14
AI Technical Summary
When the vehicle window glass is opened, existing wiper equipment still needs to maintain a high wiper speed to ensure cleaning results, resulting in the operator being splashed, affecting operating comfort and safety.
Depending on the opening parameters of the vehicle window glass and/or the convertible roof, the wiper speed of the wiper is reduced at least in part of the wiper area to reduce the possibility of splashing water.
By reducing the wiper speed, it improves operating comfort and safety, while ensuring that the wiper can effectively clean the windshield even when the window glass is open.
Smart Images
Figure CN119428548A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a method for operating a windshield wiper system and to a vehicle. Background Art
[0002] A method for operating a windshield wiper system, in particular a windshield wiper, of a vehicle has been proposed, with the aid of which a windshield of the vehicle is cleaned by at least one wiper of the windshield wiper system sweeping over a wiping area of the windshield at a wiper speed. Summary of the invention
[0003] The invention relates to a method for operating a windshield wiper system, in particular a windshield wiper, of a vehicle, with which a windshield of the vehicle is cleaned by at least one wiper of the windshield wiper system sweeping over a wiping area of the windshield at a wiper speed.
[0004] It is proposed that the wiper speed of the windshield wipers is reduced relative to normal operation at least in a sub-region of the wiping range as a function of at least one opening parameter of a window pane and / or a convertible top of the vehicle.
[0005] The embodiment of the method according to the invention advantageously makes it possible to provide high operating comfort, since the operator is not exposed to splashing water, in particular when the vehicle window is open. Advantageously, high safety can be provided, since the operator cannot panic during vehicle operation, since he is not exposed to splashing water. Advantageously, high cleaning performance can be provided, since the wipers can be used to clean the windshield, in particular even when the window is open.
[0006] Preferably, the wiper device is provided for use in a vehicle, in particular a passenger car and / or a truck. Preferably, the vehicle has a vehicle body, which has at least a windshield and a window glass, which is configured as an openable side glass and / or as a roof window, such as a sliding roof. As an alternative or in addition, the vehicle can have a convertible top. In particular, the windshield is configured as a vehicle glass and / or a sensor area surface. In particular, the windshield is configured as a front glass of the vehicle. Alternatively, it is conceivable that the glass is configured as a rear glass and / or a sensor area surface of a vehicle sensor. In particular, the sensor area surface is formed and / or covered by the windshield. Preferably, the wiper device is configured at least as a part of a windshield wiper. Preferably, the wiper is configured as a component of the wiper device for cleaning the windshield of the vehicle. Preferably, the wiper device for cleaning the windshield is coupled to the vehicle, preferably to at least one wiper drive of the wiper device. In particular, the wiper drive of the vehicle is arranged at the vehicle body. Preferably, the wiper drive is designed as an electric motor. Preferably, the wiper has at least one wiper blade, which is connected to the wiper drive, for example, via a wiper arm. Preferably, at least one wiper blade of the wiper sweeps over the vehicle windshield and / or the sensor area surface (especially if the sensor area surface is to be integrated in the vehicle windshield) during the cleaning process in a wiping movement. In particular, the wiper blade has at least one wiper lip, which contacts the vehicle windshield and / or the sensor area surface in at least one operating state. Preferably, the wiper lip of the wiper blade is designed to wipe off liquids, such as rainwater and / or splash water and / or cleaning fluid and / or similar liquids, especially by a wiping movement. An "operating state" should preferably be understood as a state in which the wiper device is ready for operation for a wiping process and / or a wiping operation and / or is in a wiping operation, in which the wiper blade of the wiper sweeps over the windshield and / or the sensor area surface and preferably rests against the windshield and / or the sensor area surface in contact. “Established” is to be understood in particular as specially designed and / or equipped. “An object is equipped for a specific function” is to be understood in particular as meaning that the object fulfills and / or performs this specific function in at least one application state and / or operating state.
[0007] Preferably, the wiper moves back and forth on the windshield at a wiper speed, especially in a manner of contacting the windshield. Preferably, the wiping area of the windshield is formed by the surface swept by the wiper. Preferably, the wiper moves back and forth at least substantially parallel to the windshield / along the windshield. Preferably, the wiper moves on the windshield in a wiper movement, preferably in a rotational movement, around the rotational axis of the wiper drive. Preferably, the wiper rotates partially / partially around the rotational axis of the wiper drive. Preferably, the wiper movement is reversed in the direction of the wiper movement at at least one turning area of the wiper. Preferably, the wiper movement is reversed at least in a partial area, especially arranged in the vicinity of the A-pillar of the vehicle. Preferably, the wiper movement has at least one additional turning area, especially in the vicinity of the water tank of the vehicle. In particular, the vicinity of the A-pillar / water tank is formed by all points, which have a spacing of less than 50 cm, preferably 25 cm, advantageously 15 cm and preferably 5 cm from the A-pillar / water tank. Preferably, rainwater and / or splashing water and / or cleaning fluid are wiped off the windshield at the wiper speed. In particular, rainwater and / or splashing water and / or cleaning fluid are preferably thrown off in at least one operating state in at least the turning area according to the wiper speed. It is conceivable that rainwater and / or splashing water and / or cleaning fluid may enter / be thrown into at least one of the opened window panes during normal operation. It is preferably determined / detected according to the opening parameter whether at least one of the window panes is open. Preferably, if an open window pane and / or an open convertible roof and / or another vehicle opening, such as an open door and / or a tailgate, etc., are detected by the opening parameter, the wiper speed is at least reduced, especially relative to normal operation. "Reduced wiper speed" should be understood here in particular to reduce the wiper speed by at least 10%, preferably at least 30%, preferably at least 50% and in particular at least 75% relative to the preferred maximum wiper speed in normal operation. In particular, the maximum wiper speed is limited, especially if at least one of the window panes is open. For example, the wiper speed can be set below the maximum wiper speed. It is conceivable to limit the wiper speed to at least one of a plurality of available wiper speed stages. "Normal operation" is to be understood here in particular as wiper operation with the vehicle windows and / or sliding roof and / or convertible top or similar vehicle openings completely closed. "At least substantially" is to be understood in this context in particular as deviations from a predefined value, in particular by less than 25%, preferably by less than 10% and particularly preferably by less than 5%.
[0008] Preferably, the wiper speed is reduced over the entire wiper area. However, it is conceivable, in particular at least in one operating state, to reduce the wiper speed only in a partial area, for example in the vicinity of an A-pillar arranged close to the open vehicle window. It is conceivable to reduce only the forward or reverse movement, in particular directed in the direction of the open vehicle window.
[0009] Furthermore, it is proposed that during the operation of the wipers, the wiper speed is preferably directly changed when the opening parameter is changed. Since the wiper speed is directly reduced / lowered, especially when the vehicle window is opened, and thus splashing water into the passenger interior can be prevented in real time, a particularly high level of operating comfort can be advantageously provided. Preferably, the wiper speed is reduced as soon as the vehicle window is opened. Preferably, the wiper speed is reduced by reducing the rotational speed of the wiper drive. It is conceivable that the wiper speed is only reduced when the wiper moves towards the opened window pane. Alternatively, the wiper speed can also be reduced in a subsequent wiping cycle. "Directly changing the wiper speed" should be understood here in particular as a reaction in real time, preferably at least within a delay time. "Delay time" should be understood here in particular as a time period that is specified, for example, as the maximum permissible reaction time for signal transmission.
[0010] Furthermore, it is proposed that the wiper speed is reduced at least as a function of an operating parameter which is at least in the form of a vehicle speed. Since the wiper speed has to be reduced only when necessary, in particular due to the vehicle speed, a high cleaning performance can advantageously be provided. The wiper speed is preferably reduced more drastically as the vehicle speed increases. The operating parameter can also additionally have, for example, the direction of travel. It is conceivable that the wiper speed remains unchanged at a vehicle speed of at least substantially zero km / h or when driving backwards.
[0011] Furthermore, it is proposed to reduce the wiper speed at least as a function of an operating parameter which is at least configured as a wiper position in the wiping area. Since the wiper speed is reduced only where necessary, a high cleaning performance can be provided advantageously. The wiper speed is preferably reduced at least in the vicinity of the upper turning area, in particular in the area of the A-pillar. It is conceivable to reduce the wiper speed in at least one third of the wiping area facing the open window pane, preferably in one half. If the wiper moves towards the open vehicle window, the wiper speed can be reduced, for example. If the wiper moves away from the open window pane, the wiper speed can be kept unchanged, for example. It is conceivable to reduce the wiper speed in the entire wiping area, for example in the case of an open roof window, in both directions of movement.
[0012] In addition, it is proposed that the opening parameter is designed as at least one opening state of at least one window pane. Since the opening state can be detected particularly easily, in particular using already existing sensors, a low complexity is advantageously provided. Preferably, the opening state has exactly two values, which are designed as open and closed. Preferably, if the opening state has the value "open", the wiper speed is reduced. Preferably, if at least one of the window panes is open, the wiper speed is reduced. Alternatively, more than two values can also be predefined, which can be designed, for example, as open, half-open and closed.
[0013] In addition, it is proposed that the opening parameter is configured as at least one opening position of at least one window pane. Since the wiper speed is reduced, in particular, depending on the opening position of the opened window pane, a high cleaning performance / efficiency can be provided advantageously. The wiper speed is preferably reduced depending on the opening position. It is conceivable that each opening position of the window pane is assigned a maximum wiper speed. Preferably, each window pane of the vehicle is assigned an opening position. The opening position can be referred to as a driver's window, a passenger window, a sliding roof, a rear window, etc. Preferably, a wiper speed is predefined for each vehicle window. It is conceivable that, in the case of a plurality of opened window panes, the wiper speed is limited to the lowest maximum wiper speed of all opened window panes. For example, the wiper speed can be reduced more drastically in the case of an opened driver's window than in the case of an opened rear window. It is conceivable that, in the case of an opened driver's window, the wiper speed is reduced in the direction of movement facing the driver's window. It is conceivable that, in the case of an opened passenger window, the wiper speed is reduced in the direction of movement facing the passenger window. In the case of an open roof window, for example, the wiper speed can be reduced during the back-and-forth movement. "Backward movement" is to be understood here in particular as a movement of the wiper from the parked position in the direction of the deflection region of the wiper. "Return movement" is to be understood here in particular as a movement of the wiper from the deflection region in the direction of the parked position of the wiper.
[0014] It is further proposed that the opening parameter is designed as at least one opening percentage of at least one window pane. Since the wiper speed can be set as a function of the opening percentage of the window pane, a particularly high cleaning performance / efficiency can advantageously be provided. The opening percentage is preferably expressed as a percentage and / or as a value between zero and one. The wiper speed is preferably adjusted continuously as a function of the opening percentage. It is conceivable to classify the opening percentage into different opening stages. It is conceivable to take into account further parameters, such as, for example, the wind speed, in order to adjust the wiper speed.
[0015] In addition, a vehicle is proposed, which has at least one wiper device, at least one window pane, at least one sliding roof, at least one hood and / or at least one control and / or regulating unit, which is designed to carry out a method, in particular according to any of the preceding claims. Since the operator is not exposed to splashing water, in particular in the case of an open vehicle window, a high level of operating comfort can be advantageously provided. Since the operator is not exposed to splashing water, in particular during vehicle operation, a high level of safety can advantageously be provided. Since the wiper can be used to clean the windshield, in particular even in the case of an open window pane, a high cleaning performance can advantageously be provided. Preferably, the vehicle has a window sensor, which is designed to detect an opening state and / or an opening percentage. It is conceivable that the control and / or regulating unit is designed as a control unit of the vehicle.
[0016] The method according to the invention and the vehicle according to the invention are not intended to be limited to the applications and embodiments described above. In particular, the method according to the invention and the vehicle according to the invention can have a number of individual elements, components and units and method steps that differ from the number mentioned here in order to fulfill the functional mode described here. In addition, with regard to the range of values specified in the present disclosure, the values within the mentioned boundaries are also to be regarded as public and can be used arbitrarily. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Further advantages are obtained from the following description of the drawings. Embodiments of the invention are shown in the drawings. The drawings, the description and the claims contain a large number of combined features. A person skilled in the art will also consider these features individually in an appropriate manner and combine them into meaningful further combinations.
[0018] in:
[0019] Figure 1 A schematic diagram of a vehicle having a windshield wiper device and having a window pane is shown, and
[0020] Figure 2 A schematic flow chart of a method for operating a windshield wiper system is shown. DETAILED DESCRIPTION
[0021] Figure 1The vehicle 10 is shown. The vehicle 10 has a windshield wiper device 12. The windshield wiper device 12 is designed as a windshield wiper. The windshield wiper device 12 has a wiper 16. The windshield wiper device 12 has a wiper drive 40. The wiper 16 is fastened to the wiper drive 40 via a wiper arm. The vehicle 10 has a windshield 14. The wiper 16 has a wiper lip. The wiper lip of the wiper 16 contacts the windshield 14. The wiper 16 is designed to move on the windshield 14. The windshield 14 has a wiping area 20. The wiper 16 is designed to move back and forth in the wiping area 20 of the windshield 14. The vehicle 10 has an A-pillar 38. The vehicle 10 has a water tank 42. The wiper 16 has a deflection area 36. The deflection area 36 is arranged in the vicinity of the A-pillar 38. The wiper 16 has a further deflection area 44. A further deflection area 44 is arranged in the vicinity of the water tank 42. The vehicle 10 has a plurality of window panes 18. The vehicle 10 has a vehicle body. The windshield 14 is integrated into the vehicle body. The window panes 18 are integrated into the vehicle body. The window panes 18 are designed to be openable and closable. As an alternative or in addition, the vehicle 10 can also have a sliding roof 48 and / or a convertible top 46. The vehicle 12 has a sensor which is designed to detect an opened / closed window pane 12. The vehicle 10 has a control and / or regulating unit 28.
[0022] The control and / or regulating unit 28 is configured to reduce the wiper speed when one of the windows 18 is open. The control and / or regulating unit 28 is configured to receive / process the signals of the sensor. The control and / or regulating unit 28 is configured to provide an opening parameter. The control and / or regulating unit 28 is configured to reduce the wiper speed according to the opening parameter. The opening parameter is configured as the opening state of the window 18. As an alternative or in addition, the opening parameter is configured as the opening position 26 of the window 18. As an alternative or in addition, the opening parameter is configured as the opening percentage of the window 18. As an alternative or in addition, the opening parameter can also be configured as the opening state, the opening position 26 and / or the opening percentage of the convertible top 46. In addition, the control and / or regulating unit 28 is configured to reduce the wiper speed according to an operating parameter. The operating parameter is configured as the vehicle speed and / or as the wiper position 24 in the wiping area 20. It is conceivable that the control and / or regulating unit 28 is configured as a controller of the vehicle 10.
[0023] Figure 2 A schematic flow chart of a method for operating a windshield wiper device 12 is shown.
[0024] In method step 30, the windshield 14 of the vehicle 10 is cleaned by means of the windshield wiper device 12. To this end, the wipers 16 of the windshield wiper device 12 sweep over the wiping area 20 of the windshield 14 at a wiping speed. The wipers 16 move back and forth in the wiping area 20. The wipers 16 rotate in sections about the axis of rotation of the wiper drive 40 of the windshield wiper device 12 (see Figure 1 ). In this case, liquid adhering to the windshield 14 in the wiper area 20 is wiped off. The wiper 16 reverses in the direction of movement in the vicinity of the A-pillar 38 of the vehicle 10. The wiper 16 reverses in the direction of movement in the vicinity of the water tank 42.
[0025] In a further method step 32, opening parameters are determined. Individual opening parameters are determined for each window pane 18 and / or convertible top 46. For this purpose, the control and / or regulating unit 28 receives sensor signals for each window pane 18. The control and / or regulating unit 28 determines the opening parameters based on the signals. Furthermore, the vehicle speed is retrieved by the control and / or regulating unit 28. Furthermore, the wiper position 24 within the wiping region 20 is retrieved by the control and / or regulating unit 28. It is conceivable that the control and / or regulating unit 28 calculates a plurality of opening parameters, a plurality of operating parameters and further parameters into a representative opening parameter.
[0026] In a further method step 34, the wiper speed is reduced relative to normal operation as a function of the opening parameters of the window pane 18 and / or the convertible top 46 of the vehicle 10 (see Figure 1 ). Alternatively, the wiper speed can be reduced relative to normal operation only in a sub-region 22 of the wiping area 20 depending on the opening parameters of the window pane 18 and / or the convertible top 46 of the vehicle 10. Alternatively, the wiper speed can be reduced if the wiper 16 moves towards the opened window pane 18. In addition, the wiper speed is reduced depending on the operating parameters. The wiper speed is reduced more drastically at higher vehicle speeds. As an alternative or in addition, other parameters such as, for example, the wind speed can be taken into account. For example, the wiper speed can be further reduced in the case of strong winds. During the operation of the wipers, the wiper speed is directly changed when the opening parameters are changed. Alternatively, the wiper speed can also be set only in the subsequent wiping cycle. Alternatively, the wiper speed can be limited to a maximum wiper speed. It is also conceivable that the wiper speed is reduced only in a sub-region of the wiping area.
Claims
1. A method for operating a windshield wiper device (12), in particular a windshield wiper, of a vehicle (10), with the aid of which a windshield (14) of the vehicle (10) is cleaned by at least one wiper (16) of the windshield wiper device (12) sweeping over a wiping area (20) of the windshield (14) at a wiper speed, characterized in that The wiper speed of the windshield wiper (16) is reduced relative to normal operation in at least a sub-region (22) of the wiping region (20) as a function of at least one opening parameter of a window pane (18) and / or a convertible top (46) of the vehicle (10).
2. The method according to claim 1, characterized in that During wiper operation, the wiper speed is preferably changed directly when the opening parameter is changed.
3. The method according to any one of the preceding claims, characterized in that The wiper speed is reduced at least as a function of an operating parameter which is at least configured as a vehicle speed.
4. The method according to any one of the preceding claims, characterized in that The wiper speed is reduced at least as a function of an operating parameter which is at least in the form of a wiper position (24) within the wiping region (20).
5. The method according to any one of the preceding claims, characterized in that The opening parameter is designed as at least one opening state of the at least one window pane (18).
6. The method according to any one of the preceding claims, characterized in that The opening parameter is configured as at least one open position (26) of the at least one window pane (18).
7. The method according to any one of the preceding claims, characterized in that The opening parameter is designed as at least one opening percentage of the at least one window pane (18).
8. A vehicle (10) comprising: at least one windshield wiper device (12), at least one window pane (18), at least one sliding roof (48), at least one convertible roof (46) and / or at least one control and / or regulating unit (28) which is designed to carry out a method, in particular according to any of the preceding claims.