CN117141414A - Glass wiping device, glass wiping apparatus and method for operating a glass wiping device - Google Patents

Abstract

The invention relates to a glass wiping device (10) comprising a drive motor (12) and a control and/or regulating unit (14), which operates the drive motor (12) in at least one permanent wiping mode (16) with a maximum permanent wiping frequency (18). It is proposed that the control and/or regulating unit (14) operates the drive motor (12) in the splash mode (22) at a higher wiping frequency than the maximum permanent wiping frequency (18), in particular at least 10%, during time-limited intervals (20).

Description

Glass wiping device, glass wiping apparatus and method for operating a glass wiping device

Technical Field

The invention relates to a glass wiping device, a glass wiping apparatus for a motor vehicle, a glass wiping device and a method for operating a glass wiping device.

Background

A glass wiping device has been proposed with a drive motor and a control and/or regulating unit which operates the drive motor with a maximum permanent wiping frequency in at least one permanent wiping mode.

Disclosure of Invention

The invention is based on a glass wiping device with a drive motor and a control and/or regulating unit which operates the drive motor with a maximum permanent wiping frequency in at least one permanent wiping mode.

It is proposed that the control and/or regulating unit operates the drive motor in the splash mode for a time-limited interval at a higher wiping frequency than the maximum permanent wiping frequency, in particular at least 10%.

"glass wiping device" shall mean at least a part, preferably a component, of a glass wiping device of a motor vehicle.

The glass wiping device may also comprise the entire glass wiping apparatus. The glass wiping device is preferably provided for cleaning surfaces, preferably glass of a motor vehicle. The glass wiping device may also be configured as a fitting and/or a spare part of the glass wiping device.

The drive motor is provided for driving at least one wiper arm, in particular at least two wiper arms, of a glass wiper device having a glass wiper device for a wiping movement, wherein the wiper blade of the glass wiper device connected to the wiper arms is moved along a surface, in particular a glass of a motor vehicle, in order to clean the surface. The at least one wiper arm may be connected to the drive motor directly or indirectly, for example via a lever and/or a transmission. The drive motor is preferably configured as an electric motor. In principle, however, other types of drive motors are also conceivable, for example pneumatic drives.

"control and/or regulation unit" shall mean a unit with at least one control electronics. "control electronics" shall mean a unit with a processing unit and a memory unit, and with an operating program stored in the memory unit. The control and/or regulation unit is provided for operating the drive motor in at least two different operating modes and for controlling and/or regulating the wiping frequency of the drive motor.

"permanent wiping mode" shall mean an operating mode in which the control and/or regulating unit can operate the drive motor at the maximum permanent wiping frequency for a longer period of time, in particular for at least 2 hours, without an overload of the drive motor and/or other components of the glass wiping device and/or of the glass wiping apparatus with the glass wiping device ensuing. The maximum permanent wiping frequency is the load limit to which the control and/or regulating unit can operate the drive motor in permanent wiping mode for a longer period of time without overloading this drive motor. The maximum durable wiping frequency is at most 65 wiping cycles per minute, preferably at most 60 wiping cycles per minute. The permanent wiping pattern preferably comprises at least two permanent wiping stages which differ from each other in the wiping frequency. The persistent wiping mode may include, for example: a first persistent wiping stage with a low first persistent wiping frequency and/or a low first persistent wiping frequency range, for example 10 to 40 wiping cycles; and a second permanent-wiping stage with a high second permanent-wiping frequency, in particular a maximum permanent-wiping frequency and/or a high second permanent-wiping frequency range, for example 40 wiping cycles per minute up to the maximum permanent-wiping frequency.

"wiping cycle" shall mean a process in which the drive motor moves at least one wiper arm of a glass wiping device with a glass wiping device from an initial position, along a surface, in particular along the glass of a motor vehicle, into a final position and from the final position back into the initial position again.

"splash mode" shall mean an operating mode in which the control and/or regulating unit operates the drive motor at a higher wiping frequency than the maximum permanent wiping frequency, in particular by at least 2%, advantageously by at least 4%, particularly advantageously by at least 6%, preferably by at least 8% and particularly preferably by at least 10%, over a time-limited interval. The time-limited interval during which the control and/or regulating unit operates the drive motor in the splash mode is limited to a time period of at most 8 minutes, in particular at most 7 minutes, advantageously at most 6 minutes, particularly advantageously at most 5 minutes, preferably at most 4 minutes, preferably at most 3 minutes, particularly preferably at most 2 minutes and most preferably at most 1 minute.

The control and/or regulating unit may be provided for operating the drive motor in at least one further operating mode in addition to the at least one permanent wiping mode and the splash mode. The further operating mode may for example relate to a compartment wiping mode in which the control and/or regulating unit operates the drive motor with a low wiping frequency, for example with a maximum of 10 wiping cycles per minute.

An "operating state" shall mean a state in which the glass wiping device and/or the glass wiping apparatus with the glass wiping device are ready for use and/or in a wiping operation for a wiping process and/or a wiping operation. The operating state of the glass wiping device includes both all operating modes in which the control and/or regulating unit can operate the drive motor and also a stationary mode in which the control and/or regulating unit does not operate the drive motor, but is ready for the operation.

In this document, terms preceding a particular term, such as "first" and "second," are used merely to distinguish objects and/or allocations of objects from one another and do not indicate an existing total number and/or prioritization of objects. The "second object" does not necessarily indicate the presence of the "first object", in particular.

"arranged" should preferably be understood as specially arranged, specially designed and/or specially equipped. An object is provided for a specific function, it being understood that the object preferably fulfills and/or performs this specific function in at least one application and/or operating state.

The safety can be advantageously increased by the embodiment of the glass wiping device according to the invention. In particular, in the event of water splashing events, such as the onset of heavy rainfall and/or rain and/or snow and/or the like, and/or in the event of large amounts of water thrown onto the windshield by other vehicles, such as when driving through a puddle, the free view is more quickly reestablished and safety is thus increased for the occupants and other traffic participants in road traffic. Furthermore, the safety and functionality in vehicles equipped with special sensors, for example so-called lidar sensors and/or distance sensors for autonomous driving and/or sensors for detecting traffic lights, etc., can be increased in such a way that such sensors can be cleaned of water again particularly quickly in the event of a splash of water and thus work completely properly.

The drive motor can be configured as a circumferential electric motor and has only one direction of operation, wherein a drive torque for producing a wiping operation of the wiper arm can be transmitted from the drive motor to the wiper arm via the lever transmission. The drive motor is preferably configured as an electric motor, the direction of operation of which can be reversed in particular on the basis of the current position of the wiper arm which can be detected in particular by a corresponding sensor of the glass wiper device. The drive motor whose direction of operation can be reversed can, for example, be a brush direct current motor. In a particularly preferred embodiment, however, it is proposed that the drive motor is configured as an electronically commutated electric motor. In this way, a particularly compact and effective drive motor with high efficiency and thus a particularly effective glass wiping device can be advantageously provided. Furthermore, when the drive motor is configured as an electronically commutated electric motor, the heat release can advantageously be reduced compared to other drive modes. The risk of wear and overload of the drive motor can thus be reduced, preferably minimized, in particular also at high wiping frequencies in the splash mode. An electronically commutated electric motor is also known as a "brushless dc motor", but in this case an ac motor, in particular a synchronous motor, is involved, whose commutation is carried out in contrast to a brushed dc motor not via carbon brushes but by means of electronic semiconductor components, for example MOSFETs and/or the like.

It is furthermore proposed that the glass wiping device has a sensor unit for detecting the amount of water, wherein the control and/or regulating unit is provided for automatically operating the drive motor in the splash mode when a predetermined amount of water is exceeded by the sensor unit. The safety can be further improved by this embodiment, in particular because the splash event can be detected more quickly by the sensor unit than by a person with typical reaction times and the splash mode can be activated automatically more quickly by the control and/or regulation unit. The predetermined quantity preferably relates to a high water quantity, for example to a water quantity of at least 30 liters per square meter and per hour, wherein lower or higher predetermined water quantities are of course also conceivable. The predetermined amount of water may relate to a factory setting which is fixedly stored in the control and/or regulation unit. The predetermined water quantity can however preferably be set by the user, in particular at least within a specific range, in order to be able to adapt the operation of the drive motor in the splash mode advantageously to the individual requirements of the user. The sensor unit has at least one rain sensor, which is advantageously integrated into or arranged at the windshield of the motor vehicle having the glass wiping device. The rain sensor is preferably configured as a photoelectric rain sensor. In principle, however, other types of rain sensors are also conceivable, for example electrical and/or mechanical sensors. The sensor unit may furthermore have further rain sensors and/or further additional sensors, for example speed sensors for detecting the travel speed of the vehicle with the glass wiper and/or the wiping frequency of the drive motor and/or the current wiper arm position, etc.

It is furthermore proposed that the control and/or regulating unit is provided for automatically switching the operation of the drive motor from the splash mode to the permanent wiping mode when a quantity of water below a predetermined quantity is detected by the sensor unit. The comfort of the user can thus be advantageously increased in such a way that below a predetermined amount of water, the manual disabling of the splash mode is already disabled. Furthermore, when the control and/or regulation unit is provided for automatically switching the operation of the drive motor from the splash mode to the permanent wiping mode when a lower than predetermined amount of water is detected by the sensor unit, wear of other components of the drive motor and/or of the glass wiping device comprising the glass wiping device, such as glass wiper blades or the like, may be reduced due to the increased load in the splash mode.

It is furthermore proposed that the control and/or regulating unit is provided for gradually, in particular continuously, reducing the wiping frequency of the drive motor to the wiping frequency of the previously set permanent wiping stage when switching from the splash mode to the permanent wiping mode. The comfort of the user can advantageously be further improved by this design. The gradual drop in the wiping frequency when switching from the splash mode to the permanent wiping mode can be perceived in particular less pronounced and/or less disturbing and thus more comfortably by the user. In the memory unit of the control and/or regulating unit, at least one function is preferably stored, by means of which the control and/or regulating unit gradually, in particular continuously, reduces the wiping frequency to the wiping frequency of the previously set permanent wiping stage when switching from the splash mode to the permanent wiping mode, wherein the function may for example relate to a linear function or an exponential function or a logarithmic function or other function that is considered reasonable by the person skilled in the art. The control and/or regulation unit is preferably provided for immediately switching from the permanent wiping mode or from the quiet mode to the splash mode, in particular when an excess of a predetermined amount of water is detected by the sensor unit and/or when manually activated by the user via the input unit, and for suddenly operating the drive motor with a wiping frequency that is greater than the maximum permanent wiping frequency, for example by means of a rectangular function and/or other suitable drive function stored in the memory unit. However, it is also conceivable for the control and/or regulating unit to be provided for switching from the permanent wiping mode to the splash mode in steps and for the wiping frequency to be increased stepwise, in particular continuously, from the initial frequency, for example the maximum permanent wiping frequency, to the maximum possible wiping frequency within a time-limited interval, which is increased relative to the maximum permanent wiping frequency.

It is furthermore proposed that the control and/or regulating unit is provided for automatically ending the splash mode after a predetermined time and/or after a predetermined number of wiping cycles. In this way, an overload of the components of the glass wiping device, in particular of the drive motor, can advantageously be prevented. The control and/or regulating unit may be provided for automatically ending the splash mode after a predetermined time of 2 minutes, in particular 1.75 minutes, advantageously 1.5 minutes, particularly advantageously 1.25 minutes, preferably 1 minute, preferably 45 seconds, particularly preferably 30 seconds, and/or after 160 wiping cycles, in particular after 140 wiping cycles, advantageously after 120 wiping cycles, particularly advantageously after 100 wiping cycles, preferably after 80 wiping cycles, preferably after 60 wiping cycles and particularly preferably after 30 wiping cycles.

It is furthermore proposed that the wiping frequency of the drive motor in the splash mode is greater than 60 wiping cycles per minute, in particular at least 70 wiping cycles per minute, preferably at least 80 wiping cycles per minute. The safety can advantageously be further increased by this embodiment.

It is furthermore proposed that the glass wiping device has an input unit which is connected to the control and/or regulating unit in order to activate and/or deactivate the splash mode manually by the user. Thereby advantageously further improving the comfort of the user. Furthermore, if such a glass wiping device is used, for example, in a motor vehicle in a low-cost section, it is advantageously possible to provide a particularly cost-effective glass wiping device without the sensor unit having to be constructed. The input unit preferably has at least one input element, which can be integrated into a steering column switch of a motor vehicle or be configured as such. The splash mode may be activated and/or deactivated by a user, for example, by tapping an input element. Alternatively or additionally, it is also conceivable for the input unit to be provided for manually activating and/or deactivating the splash mode by means of voice control and/or gesture control and to have an input element in the form of an acoustic and/or optical sensor corresponding thereto.

It is furthermore proposed that the control and/or regulating unit is provided for activating or deactivating the splash mode as a function of the driving speed of the motor vehicle. Thereby advantageously further improving the comfort of the user. The control and/or regulation unit may, for example, be provided for disabling the splash mode when the threshold value of the travel speed is undershot, for example to a travel speed of at most 10 km per hour. This advantageously prevents inadvertent automatic activation, for example, when the vehicle is slowly driven over an automatic cleaning device or the like. The control and/or regulating unit is preferably connected in the installed state to a speedometer of a motor vehicle having a glass wiper device in order to activate or deactivate the splash mode as a function of the speed of travel. Alternatively or additionally, it is conceivable for the glass wiping device to have a speed sensor for detecting the travel speed and for relaying the travel speed to the control and/or regulating unit.

It is also proposed that the control unit is provided for adjusting the wiping frequency in the splash mode as a function of the driving speed of the motor vehicle. By means of this embodiment, safety and comfort can advantageously be further increased. The control and/or regulation unit may be provided for adapting the wiping frequency in the splash mode linearly with the travel speed, for example as the travel speed increases, in order to increase a constant value or a constant factor. Of course, the adjustment of the wiping frequency in the splash mode by the control and/or regulating unit is not limited to a linear correlation with the travel speed, but may also be adjusted by the control and/or regulating unit, for example using an exponential or other correlation between the wiping frequency in the splash mode and the travel speed as would be considered reasonable by a person skilled in the art. Alternatively or additionally, it is also conceivable for the control and/or regulation unit to operate the drive motor in the splash mode at a constant wiping frequency which increases with respect to the maximum lasting wiping frequency, for example 70 wiping cycles per minute, in a specific first speed range, for example at a travel speed of between 10 and 100 kilometers per minute, and for the wiping frequency to increase linearly or exponentially, for example from 70 wiping cycles per minute to 80 wiping cycles, in at least one second speed range, for example at a travel speed of more than 100 kilometers per hour.

The invention also relates to a glass wiping device for a motor vehicle, comprising a glass wiping device according to one of the embodiments described above. Such a glass wiping device is distinguished in particular by its advantageous properties, which can be achieved by the previously described design of the glass wiping device. The glass wiping device preferably has at least one wiper arm, in particular two wiper arms, in addition to the glass wiping device, each wiper arm having a wiper blade. Furthermore, the glass wiping device may also have further units and/or elements.

The invention also starts from a method for operating a glass wiping device, in particular according to one of the preceding embodiments, having a drive motor, wherein the drive motor is operated in at least one permanent wiping mode with a maximum permanent wiping frequency.

It is proposed that the drive motor is operated in the splash mode for a time-limited interval with a higher wiping frequency than the maximum permanent wiping frequency, in particular at least 10%. In this way, a particularly safe and comfortable operation of the glass wiping device can advantageously be achieved.

The glass wiping device according to the invention should not be limited to the applications and embodiments described above. The glass wiping device according to the invention may in particular have a number of individual elements, components and units which is different from the number described here for carrying out the operation described here, and the method for operating the glass wiping device may have a number of method steps which is different from the number of method steps described here. Furthermore, values within the limits in the value ranges specified in this disclosure should also be regarded as being public and disposable.

Further advantages result from the following description of the drawings. Embodiments of the invention are illustrated in the accompanying drawings. The figures, description and claims contain a number of combined features. The features can also be viewed individually and summarized as reasonable further combinations by the person skilled in the art.

Drawings

Fig. 1 shows in a schematic view a glass wiping device with a glass wiping device, comprising a drive motor, a control and/or regulation unit, a sensor unit and an input unit;

fig. 2 shows a schematic diagram for displaying different operating modes in which the control and/or regulation unit operates the drive motor;

fig. 3 shows a schematic diagram for displaying the correlation between the amount of water detected by the sensor unit and the different modes of operation in which the control and/or regulation unit operates the drive motor; and is also provided with

Fig. 4 shows a schematic method flow chart for displaying a method for operating a glass wiping device.

Detailed Description

Fig. 1 shows a glass wiping device 40 for a motor vehicle (not shown). The glass wiping device 40 has a glass wiping device 10. The glass wiping device 40 furthermore comprises two wiper arms 76, each having a wiper blade (not shown) for wiping the windshield 54 of the motor vehicle.

The glass wiping device 10 has a drive motor 12. The drive motor 12 is provided for driving the wiper arm 76 in wiping motion on the windshield 54. The drive motor 12 is currently configured as an electronically commutated electric motor.

The glass wiping device 10 further comprises a control and/or regulating unit 14 which operates the drive motor 12 with a maximum permanent wiping frequency 18 (see fig. 2) in at least one permanent wiping mode 16 (see fig. 2).

The control and/or regulating unit 14 operates the drive motor 12 in a splash mode 22 (see fig. 2) with a higher wiping frequency than the maximum durable wiping frequency 18, in particular at least 10% higher, in a time-limited interval 20 (see fig. 2).

The glass wiping device 10 comprises a sensor unit 24 for detecting a quantity of water 26 (see fig. 3). The sensor unit 24 has a rain sensor 56 which is integrated into the windshield 54 of the motor vehicle and is provided for detecting the amount of water 26 impinging on the windshield 54. The sensor unit 24 is connected to the control and/or regulating unit 14 and, in an operating state of the glass wiping device 10, conveys the detected water quantity 26 to the control and/or regulating unit 14.

The glass wiper device 10 further comprises an input unit 34 connected to the control and/or regulation unit 14 to manually activate and/or deactivate the splash mode 22 by a user. The input unit 34 comprises at least one input element (not shown), which may be integrated into a steering column switch of a motor vehicle or be configured as such. By tapping on an input element of the input unit 34, the user may manually activate the splash mode 22 within the time limited interval 20 and disable the splash mode, for example, before the maximum duration of the time limited interval 20 ends.

Fig. 2 shows a schematic diagram for displaying different operating modes in which the control and/or regulation unit 14 operates the drive motor 12. The time in minutes is shown on the abscissa 36 of the graph. The frequency of wiping in units of wiping cycles per minute of the drive motor 12 is shown on the ordinate 38 of the graph. The trend function 42 shows an exemplary time trend of the wiping frequency with which the control and/or regulating unit 14 operates the drive motor 12.

The drive motor 12 can be operated in the two permanent wiping stages 30, 32 in the permanent wiping mode 16 by means of the control and/or regulating unit 14. In the first durable wiping stage 30, the control and/or regulating unit 14 operates the drive motor 12 with a first wiping frequency, which may be a maximum of, for example, 40 wiping cycles per minute. In the second permanent wiping stage 32, the control and/or regulating unit 14 operates the drive motor 12 at a maximum permanent wiping frequency 18, which is currently 60 wiping cycles per minute. In the present exemplary embodiment, the control and/or regulating unit 14 runs the drive motor 12 in the first durable wiping stage 30, for example, during a first period 44 of time, for example, five minutes, for example, during a small rain. After a first period 44, the control and/or regulating unit 14 switches from the first permanent wiping stage 30 to the second permanent wiping stage 32, for example, due to an increase in rain water, and operates the drive motor 12 at the maximum permanent wiping frequency 18 during a second period 46, for example, of another five minutes. At the end of the second period 46, a splash event begins, such as a sudden onset of heavy rainfall or the appearance of a large amount of water thrown by other vehicles onto the windshield 54. The control and/or regulating unit 14 thus switches from the permanent wiping mode 16 to the splash mode 22 and operates the drive motor 12 in the splash mode 22 for a third period of time 48, which corresponds to the time-limited interval 20. During the time-limited interval 20, the control and/or regulation unit 14 operates the drive motor 12 in the splash mode 22 at a higher wiping frequency than the maximum permanent wiping frequency 18. Currently, the interval 20 is limited in time to, for example, one minute. The wiping frequency in the splash mode 22 is at least 10% higher than the maximum durable wiping frequency 18. The wiping frequency of the drive motor 12 is greater than 60 wiping cycles per minute in the splash mode 22. The wiping frequency of the drive motor 12 is in particular at least 70 wiping cycles per minute in the splash mode 22. At the present time, the frequency of the wiping of the drive motor 12 in the splash mode 22 is at least 80 wiping cycles per minute.

The control and/or regulating unit 14 is provided for automatically ending the splash mode 22 after a predetermined time and/or after a predetermined number of wiping cycles. The control and/or regulating unit 14 may, for example, be provided for automatically ending the splash mode 22 after a predetermined time of 30 seconds or after 40 predetermined number of wiping cycles. Of course, shorter or longer predetermined times or a lower or higher number of wiping cycles are also conceivable for automatically ending the splash mode 22 by the control and/or regulating unit 14, provided these times do not exceed the duration of the time-limited interval 20.

Furthermore, the control and/or regulating unit 14 is provided for gradually, in particular continuously, reducing the wiping frequency of the drive motor 12 to the previously set wiping frequency of the permanent wiping stage 30, 32 when switching from the splash mode 22 to the permanent wiping mode 16. Currently, the control and/or regulation unit 14 steps down the wiping frequency from a wiping frequency of at least 80 wiping cycles per minute in the splash pattern 22 in the third period 48, during the following fourth period 50, to a previously set second persistent wiping stage 32 having a maximum persistent wiping frequency 18 of 60 wiping cycles per minute. The control and/or regulating unit 14 then runs the drive motor 12 in the second permanent wiping stage 32 during the fifth time period 52 at the constant maximum permanent wiping frequency 18.

Fig. 3 shows a schematic diagram for displaying the correlation between the quantity of water 26 detected by the sensor unit 24 and the operating mode in which the control and/or regulation unit 14 operates the drive motor 12. An exemplary profile of an operating mode, in which the control and/or regulating unit 14 operates the drive motor 12, is shown on the abscissa 58 in relation to the time in minutes. The amount of water 26 that strikes the windshield 54 and is detected by the rain sensor 56 of the sensor unit 24 is shown on the ordinate 60 of the graph in liters per square meter and hour. Curve 66 illustrates an exemplary time profile of the amount of water 26 detected by the sensor unit 26. Below a first threshold 62, for example below 1 liter per square meter and per hour, the control and/or regulating unit 14 does not operate or operates the drive motor 12 in the interval wiping mode 68, for example with a wiping frequency of 4 wiping cycles per minute. Above the first threshold 62 and below a second threshold 64 of, for example, 10 liters per square meter and per hour, the control and/or regulating unit 14 operates the drive motor 12 in the first long-lasting wiping stage 30 in the long-lasting wiping mode 16 with up to 40 wiping cycles per minute. Above the second threshold 64, the control and/or regulating unit 14 operates the drive motor 12 in the permanent wiping mode 16 in the second permanent wiping stage 32 at a maximum permanent wiping frequency 18 corresponding to a maximum of 60 wiping cycles.

The control and/or regulation unit 14 is provided for automatically operating the drive motor 12 in the splash mode 22 when a predetermined water quantity 28 is exceeded by the sensor unit 24. The predetermined amount of water 28 may for example relate to an amount of water of 30 liters per square meter and per hour, wherein of course lower or higher predetermined amounts of water 28 are also conceivable. The control and/or regulating unit 14 is provided for automatically switching the operation of the drive motor 12 from the splash mode 22 to the permanent wiping mode 16 when a quantity of water 28 below a predetermined quantity is detected by the sensor unit 24.

The control and/or regulation unit 14 is also provided for activating or disabling the splash mode 22 depending on the driving speed of the motor vehicle (not shown). The control and/or regulation unit 14 may be provided, for example, for disabling the splash mode 22 when the travel speed of the motor vehicle is at most 10 km/h and for activating the splash mode above this travel speed. This prevents the splash mode 22 from being activated undesirably, for example, when the motor vehicle is stationary or moving very slowly through the automatic washing device.

Furthermore, the control and/or regulating unit 14 is provided for adjusting the wiping frequency in the splash mode 22 as a function of the driving speed of the motor vehicle. The control and/or regulation unit 14 may be provided for adapting the wiping frequency in the splash mode 22 to the driving speed by a constant factor. The control and/or regulating unit 14 may, for example, increase the wiping frequency in the splash mode 22 by 1 wiping cycle per minute when the travel speed is increased by 10 kilometers per hour, respectively, so that the control and/or regulating unit 14 may operate the drive motor 12, for example, with a wiping frequency of 66 wiping cycles per minute which is increased compared to the maximum lasting wiping frequency 18 when a splash event occurs at a travel speed of 20 kilometers per hour, with a higher wiping frequency of 67 wiping cycles per minute at a travel speed of 30 kilometers per hour, with a higher wiping frequency of 68 wiping cycles per minute at a travel speed of 40 kilometers per hour, and so on. Of course, the adjustment of the wiping frequency in the splash mode 22 by the control and/or regulation unit 14 is not limited to a linear correlation with the travel speed, but there may also be, for example, an exponential or other correlation as deemed reasonable by the person skilled in the art between the wiping frequency in the splash mode 22 and the travel speed. It is also conceivable that the control and/or regulation unit 14 is arranged to operate the drive motor 12 with a constant wiping frequency that is increased compared to the maximum permanent wiping frequency 18, for example 70 wiping cycles per minute, in a specific first speed range, for example between 10 and 100 kilometers per hour, in the splash mode 22, and to step up the wiping frequency, for example from 70 wiping cycles per minute to 80 wiping cycles, in a second speed range, for example above 100 kilometers per hour.

Fig. 4 shows a schematic method flow diagram of a method for operating the glass wiping device 10. In the method, the drive motor 12 is operated in at least one permanent wiping mode 16 at a maximum permanent wiping frequency 18 and in a splash mode 22 at a higher wiping frequency than the maximum permanent wiping frequency 18, in particular at least 10%, in a time-limited interval 20. The method comprises at least two method steps 70, 72. The method currently includes three method steps 70, 72, 74. In a first method step 70 of the method, the drive motor 12 is operated in the permanent wiping mode 16 at the maximum permanent wiping frequency 18. In a second method step 72 of the method, the drive motor 12 is operated in the splash mode 22 in a time-limited interval 20 at a higher wiping frequency than the maximum permanent wiping frequency 18, in particular at least 10%. In a third method step 74 of the method, the drive motor 12 is again operated in the permanent wiping mode 16, more precisely with the previously set permanent wiping stage 30, 32, wherein the wiping frequency is stepped down in the third method step 74 to the previously set wiping frequency of the permanent wiping stage 30, 32.

Claims (12)

1. Glass wiping device (10) with a drive motor (12) and a control and/or regulating unit (14), which in at least one permanent wiping mode (16) operates the drive motor (12) with a maximum permanent wiping frequency (18), characterized in that the control and/or regulating unit (14) operates the drive motor (12) in a splash mode (22) with a wiping frequency which is higher than the maximum permanent wiping frequency (18), in particular by at least 10%, in time-limited intervals.

2. The glass wiping device (10) according to claim 1, characterized in that the drive motor (12) is configured as an electronically commutated electric motor.

3. The glass wiping device (10) according to claim 1 or 2, characterized by a sensor unit (24) for detecting a water quantity (26), wherein the control and/or regulation unit (14) is provided for automatically operating the drive motor (12) in the splash mode (22) when a water quantity (28) exceeding a predetermined value is detected by the sensor unit (24).

4. A glass wiping device (10) according to claim 3, characterized in that the control and/or regulating unit (14) is arranged to automatically switch the operation of the drive motor (12) from the splash mode (22) to the permanent wiping mode (16) when a quantity of water (28) below a predetermined quantity is detected by the sensor unit (24).

5. A glass wiping device (10) according to claim 4, characterized in that the control and/or regulation unit (14) is arranged to gradually, in particular continuously, drop the wiping frequency of the drive motor (12) to the wiping frequency of the previously set permanent wiping stage (30, 32) when switching from the splash mode (22) into the permanent wiping mode (16).

6. A glass wiping device (10) according to any one of the preceding claims, characterized in that the control and/or regulation unit (14) is arranged to automatically end the splash mode (22) after a predetermined time and/or after a predetermined number of wiping cycles.

7. The glass wiping device (10) according to any one of the preceding claims, characterized in that the wiping frequency of the drive motor (12) in the splash mode (22) is greater than 60 wiping cycles per minute, in particular at least 70 wiping cycles per minute, preferably at least 80 wiping cycles per minute.

8. A glass wiping device (10) according to any one of the preceding claims, characterized by an input unit (34) connected with the control and/or regulating unit (14) for manually activating and/or deactivating the splash mode (22) by a user.

9. A glass wiping device (10) according to any one of the preceding claims, characterized in that the control and/or regulating unit (14) is arranged to activate or deactivate the splash mode (22) depending on the speed of travel of the motor vehicle.

10. The glass wiping device (10) according to any one of the preceding claims, characterized in that the control and/or regulating unit (14) is arranged to adjust the wiping frequency in the splash mode (22) as a function of the driving time of the motor vehicle.

11. A glass wiping device (40) for a motor vehicle with a glass wiping device (10) according to any one of the preceding claims.

12. Method for operating a glass wiping device (10), in particular according to one of claims 1 to 10, with a drive motor (12), wherein the drive motor (12) is operated in at least one permanent wiping mode (16) with a maximum permanent wiping frequency (18), characterized in that the drive motor (12) is operated in a splash mode (22) with a higher wiping frequency than the maximum permanent wiping frequency (18), in particular with a wiping frequency that is at least 10%, within a time-limited interval (20).