阅读说明：本技术 一种电动刮雨器以及车辆 (Electric window wiper and vehicle ) 是由 邴建辉 杨政国 张德鹏 刘世荣 段立恒 于 2020-05-09 设计创作，主要内容包括：本发明实施例提供一种电动刮雨器以及车辆。本发明电动刮雨器,包括：刮臂,驱动所述刮臂运动的驱动装置,随所述刮臂运动的作用件,光电开关以及控制器；所述光电开关设置于所述作用件运动范围内,所述控制器根据所述作用件对所述光电开关的触发信号控制所述驱动装置工作。通过设置光电开关和作用件,作用件与光电开关在不发生直接接触的情况下,快速的进行定位,不会出现卡滞和磨损的问题,可靠性高,使用寿命更长。(The embodiment of the invention provides an electric window wiper and a vehicle. The invention relates to an electric wiper, comprising: the scraping arm, a driving device for driving the scraping arm to move, an acting piece moving along with the scraping arm, a photoelectric switch and a controller; the photoelectric switch is arranged in the motion range of the action piece, and the controller controls the driving device to work according to the trigger signal of the action piece to the photoelectric switch. Through setting up photoelectric switch and acting part, acting part and photoelectric switch are under the condition that does not take place direct contact, and quick the fixing a position can not appear the problem of jamming and wearing and tearing, and the reliability is high, and life is longer.)

1. An electric window wiper, characterized in that: the device comprises a scraping arm, a driving device for driving the scraping arm to move, an acting piece moving along with the scraping arm, a photoelectric switch and a controller; the photoelectric switch is arranged in the motion range of the action piece, and the controller controls the driving device to work according to the trigger signal of the action piece to the photoelectric switch.

2. The electric wiper according to claim 1, wherein: the driving device is a driving motor, and the scraping arm and the acting piece are arranged on an output shaft of the driving motor.

3. An electric wiper according to claim 2, wherein: the acting element is a rod-shaped structure extending radially from the output shaft.

4. An electric wiper according to claim 2, wherein: the action piece comprises a disc body and a trigger part, the disc body takes the output shaft as a central axis, the trigger part triggers the photoelectric switch, and the trigger part is a protrusion extending from the disc body in the radial direction.

5. An electric wiper according to claim 2, wherein: the acting piece comprises a disc body taking the output shaft as a central axis, and the disc body comprises a through part and a triggering part in the circumferential direction surrounding the output shaft.

6. An electric wiper according to any one of claims 2-5, wherein: the electric window wiper comprises a mounting plate, the output shaft penetrates through the mounting plate, and the wiper arm and the acting piece are located on two sides of the mounting plate.

7. The electric wiper according to claim 5, wherein: the photoelectric switch is arranged on one side of the mounting plate, which deviates from the scraping arm.

8. The electric wiper according to claim 1, wherein: the acting piece is arranged on the scraping arm.

9. The electric wiper according to claim 8, wherein: the scraping arm and the acting piece are of an integral structure.

10. The electric wiper according to claim 1, wherein: the photoelectric switch comprises a transmitter and a receiver, and a gap allowing the acting element to pass is arranged between the transmitter and the receiver; the photoelectric switch is provided with a first photoelectric switch and a second photoelectric switch corresponding to the two pole limits of the movement range of the scraping arm.

11. The electric wiper according to claim 1, wherein: the photoelectric switch comprises a transmitter and a receiver, and a gap allowing the acting element to pass is arranged between the transmitter and the receiver; the acting piece comprises a first acting piece and a second acting piece which are arranged at two polar positions corresponding to the movement range of the scraping arm.

12. A vehicle, characterized in that: an electric wiper as defined in any one of claims 1 to 11.

Technical Field

The invention relates to the technical field of window wipers, in particular to an electric window wiper and a vehicle.

Background

The electric window wiper is an essential important component of various motor vehicles, and is used for removing rainwater, snow, dust or dirt on the windshield glass through the reciprocating motion of the wiper arm so as to ensure that a driver has good driving sight.

The electric window wiper mainly comprises a wiping arm, a driving motor, an output shaft, a mounting seat and a controller, wherein the output shaft is rotatably mounted on the mounting seat, and the wiping arm is mounted on the output shaft. In order to realize the reciprocating motion of the wiper arm, a travel switch is arranged on the wiper mounting seat, and a trigger structure is arranged on an output shaft of the wiper. When the trigger structure rotates along with the output shaft of the window wiper and touches the travel switch, the drive motor is controlled to rotate reversely or limit.

However, positioning by the travel switch requires direct mechanical contact with the travel switch, which is prone to jamming and wear, and has low reliability.

Disclosure of Invention

In view of the above problems, the present invention provides an electric wiper that can rapidly detect the limit position of a wiper arm through a photoelectric switch without directly contacting a stroke switch, to prevent the problems of easy seizure and abrasion caused by direct mechanical contact with the stroke switch, and has advantages of simple structure, high reliability, and low cost.

It is another object of the present invention to provide a vehicle.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:

the invention provides an electric wiper, comprising: the scraping arm, a driving device for driving the scraping arm to move, an acting piece moving along with the scraping arm, a photoelectric switch and a controller; the photoelectric switch is arranged in the motion range of the action piece, and the controller controls the driving device to work according to the trigger signal of the action piece to the photoelectric switch.

The above-described electric wiper device may further include a driving motor, wherein the wiper arm and the operating member are mounted to an output shaft of the driving motor.

The electric wiper as described above, wherein the acting member is a rod-like structure extending radially from the output shaft.

The electric wiper as described above, wherein the acting member includes a disc body having the output shaft as a central axis, and a trigger portion for triggering the photoelectric switch, and the trigger portion is a protrusion extending radially from the disc body.

The above-described electric wiper may further include a second engagement member that engages with the second engagement member and is configured to engage with the second engagement member.

The electric wiper as described above, wherein the electric wiper includes a mounting plate, the output shaft penetrates the mounting plate, and the wiper arm and the acting member are located on both sides of the mounting plate.

The electric window wiper as described above, wherein the photoelectric switch is disposed on a side of the mounting plate away from the wiper arm.

The electric wiper as described above, wherein the acting member is provided to the wiper arm.

The electric wiper as described above, wherein the wiper arm and the operating member are integrally formed.

The electric wiper as described above, wherein the photoelectric switch includes a transmitter and a receiver, and a gap allowing the acting member to pass is provided between the transmitter and the receiver; the photoelectric switch is provided with a first photoelectric switch and a second photoelectric switch corresponding to the two pole limits of the movement range of the scraping arm.

The electric wiper as described above, wherein the photoelectric switch includes a transmitter and a receiver, and a gap allowing the acting member to pass is provided between the transmitter and the receiver; the acting piece comprises a first acting piece and a second acting piece which are arranged at two polar positions corresponding to the movement range of the scraping arm.

The invention also provides a vehicle which comprises the electric window wiper.

Compared with the prior art, the electric window wiper provided by the invention has the following advantages: the electric window wiper comprises a wiping arm, a driving device for driving the wiping arm to move, an acting piece moving along with the wiping arm, a photoelectric switch and a controller; the photoelectric switch is arranged in the action piece movement range, the action piece moving along with the scraping arm moves to a detection area of the photoelectric switch, the action piece blocks light entering of the photoelectric switch, the photoelectric switch senses that the light is weakened, the photoelectric switch generates a trigger signal, the photoelectric switch feeds the trigger signal back to the controller through a wire, the controller receives the trigger signal of the photoelectric switch and processes the trigger signal, the driving device is controlled to reversely rotate or stop, the driving device drives the scraping arm to reversely rotate or stop, the whole movement detection process is realized, the action piece does not directly contact with the photoelectric switch, the problems of clamping stagnation and abrasion cannot occur, the reliability is high, and the service life is long.

In addition to the technical problems solved by the embodiments of the present invention, the technical features constituting the technical solutions, and the advantages brought by the technical features of the technical solutions described above, other technical problems solved by the embodiments of the present invention, other technical features included in the technical solutions, and advantages brought by the technical features will be further described in detail in the detailed description.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of an electric wiper according to an embodiment of the present invention;

fig. 2 is a schematic structural view of an electric wiper according to another embodiment of the present invention;

FIG. 3 is a schematic view of the acting element of FIG. 2;

FIG. 4 is a schematic view of a working element according to another embodiment of the present invention;

fig. 5 is a schematic structural view of an electric wiper according to still another embodiment of the present invention.

Reference numerals:

1-output shaft

2-photoelectric switch

3-acting element

4-mounting plate

5-scraping arm

21-first photoelectric switch

22-second photoelectric switch

211-first detection Port

221-second detection Port

31-first acting element

32-second acting element

33-disc body

34-trigger part

35-a through-hole.

Detailed Description

In order to make the aforementioned objects, features and advantages of the embodiments of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is a schematic structural view of an electric wiper according to an embodiment of the present invention, and as shown in fig. 1, the present invention provides an electric wiper including: the device comprises a scraping arm 5, a driving device for driving the scraping arm 5 to move, an acting piece 3 moving along with the scraping arm 5, a photoelectric switch 2 and a controller; the photoelectric switch 2 is arranged in the motion range of the action piece 3, and the controller controls the driving device to work according to the trigger signal of the action piece 3 to the photoelectric switch 2.

So design, photoelectric switch 2 is connected with the controller electricity, the controller is connected with drive arrangement electricity, scrape arm 5 in the course of the work, along with scraping the detection zone that 3 movements of effect of arm 5 moved to photoelectric switch 2, effect 3 has blockked the entering of 2 light of photoelectric switch, photoelectric switch 2 senses light by the strong weak, photoelectric switch 2 produces trigger signal, photoelectric switch 2 passes through wire feedback to controller with trigger signal, the controller receives photoelectric switch 2's trigger signal and handles trigger signal, control drive arrangement antiport or stop, drive arrangement drives and scrapes 5 antiport or stop of arm, in whole motion detection process, effect 3 and photoelectric switch 2 do not take place direct contact, the problem of jamming and wearing and tearing can not appear, high reliability, long service life.

Specifically, the wiper arm 5 is swingably attached to a window, and one end of the wiper arm 5 is connected to the output shaft 1 and the other end thereof is connected to a wiper blade which is closely attached to a windshield of a vehicle. The scraping arm 5 is connected with the end part of the output shaft 1 in a way that the end joint of the scraping arm 5 is inserted into the end part of the output shaft 1, and nuts and spring washers which are used in a group are arranged at the joint, and the nuts are also rotated downwards while the end joint of the scraping arm 5 is pressed, so that the vertical installation binding force between the end joint of the scraping arm 5 and the output shaft 1 is stable.

The specific structural configuration of the wiper arm 5 in the present embodiment may be such that the head of the wiper arm 5 has a cover body that is open to the lower end, and an inlay is provided inside the cover body, and the cover body and the inlay are connected by a plurality of screws and bayonets. Wherein, be equipped with the draw-in groove in the inlay, the draw-in groove is used for the fixed doctor-bar of cleaing away rainwater, snow, dust or filth on the windshield, is fixed with the rubber rain strip of scraping on the doctor-bar, and the rubber rain strip of scraping can keep sufficient wettability, only sufficient wettability, and it needs very good toughness to keep scraping arm 5 and window glass contact inseparable, so that scrape rainwater, snow, dust or filth on the arm 5 can cleaner cleaing away window glass.

The end of the output shaft 1 is connected with the end of the scraping arm 5, and the other end of the output shaft 1 is connected with the driving device. In this embodiment, output shaft 1's concrete structure can be for, and output shaft 1's outside cover is equipped with the sleeve, has seted up the external screw thread on the output shaft 1, has seted up the internal thread in the sleeve, and the internal thread threaded connection on the external screw thread on the output shaft 1 and the sleeve, sleeve surface are equipped with the packing ring, and the packing ring is used for covering output shaft 1's mounting hole completely. The shape of packing ring can be circular, and the size of the packing ring external diameter that selects for use in this embodiment needs to be greater than the size of output shaft 1 mounting hole internal diameter to make the external diameter of packing ring can cover the internal diameter of output hole axle mounting hole completely, thereby avoid inside dust or other debris get into the vehicle through the mounting hole of output shaft 1, and then influence the normal operating of vehicle.

In the above-described electric wiper, the controller receives a trigger signal of the photoelectric switch 2 and controls the driving device according to the trigger signal. The controller can control the driving device to realize various motion modes such as clearance, low speed, high speed, return conversion and the like so that the electric windscreen wiper can be suitable for different scenes according to different environment changes outside the vehicle window. The controller used in this embodiment is not limited to the circuit composed of the single chip microcomputer, the digital signal processor or the embedded chip provided in the present specification, and all other controllers obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

The opto-electronic switch 2 comprises a transmitter and a receiver with a gap between them allowing the acting element 3 to pass. The emitter and the receiver are respectively arranged at two sides of the U-shaped groove of the photoelectric switch 2 and form an optical axis, when an object to be detected passes through the U-shaped groove and blocks the optical axis, the photoelectric switch-on light generates a light spot quantity signal, namely a trigger signal. In this embodiment, the selected photoelectric switch 2 is the infrared photoelectric switch 2, the infrared photoelectric switch 2 uses the ohm dragon EE-SX672, a high level is output when shading, and the gap is a U-shaped groove detection port of the infrared photoelectric switch 2.

The photoelectric switch 2 is provided with a first photoelectric switch 21 and a second photoelectric switch 22 corresponding to the extreme positions of the two ends of the movement direction of the scraping arm 5. The first photoelectric switch 21 and the second photoelectric switch 22 are respectively electrically connected with a controller, the controller is electrically connected with a driving device, and the first photoelectric switch 21 and the second photoelectric switch 22 are respectively arranged on the mounting plate 4; the first photoelectric switch 21 and the second photoelectric switch 22 are arranged on the mounting plate 4 with a radius of 30mm and an angle of 120 degrees by taking the output shaft 1 as a circle center. The first photoelectric switch 21 is provided with a first detection port 211, and the second photoelectric switch 22 is provided with a second detection port 221. The acting element 3 passes through the first detection port 211 of the first photoelectric switch 21, the first photoelectric switch 21 senses that the light is weakened by the intensity, and the first photoelectric switch 21 outputs a high level; the acting member 3 moves to the second detecting port 221 of the second photoelectric switch 22, the second photoelectric switch 22 senses that the light is weakened by the intensity, and the second photoelectric switch 22 outputs the high level.

In the above-described electric wiper, the acting member 3 has a rod-like structure extending radially from the output shaft 1. The acting element 3 may be a cylindrical rod-like structure or a rectangular parallelepiped rod-like structure, the rod-like structure of the acting element 3 is not limited to its shape, and all other shapes of the acting element 3 obtained by those skilled in the art without creative efforts are within the protection scope of the present invention. Specifically, a first end of the acting element 3 is fixedly connected with a first end of the output shaft 1, and a second end of the acting element 3 is arranged in a suspended manner. In order to achieve better light shading effect, the diameter of the acting element 3 can be selected to be 3mm, the length of the acting element 3 can be selected to be 26mm, and the effective area passing through the photoelectric switch 2 is more than or equal to 1mm². Action 3 mainly used scrapes arm 5 and moves limit (appointed) position, action 3 is through sheltering from the light that gets into photoelectric switch 2, thereby trigger photoelectric switch 2 output high level, the trigger signal that photoelectric switch 2 sent is received to the controller, the controller analyzes trigger signal, the controller drive is in the reverse direction or stop with the driving motor who scrapes arm 5 and is connected, in the testing process, photoelectric switch 2 and action 3 do not take place direct contact, jamming and wearing and tearing can not take place, the detection speed is fast, the reliability is higher.

In the above-mentioned electric wiper, the driving device is a driving motor, and the wiper arm 5 and the acting member 3 are mounted on the output shaft 1 of the driving motor. Specifically, the driving motor provided in the present embodiment is mainly used to drive the wiper arm 5 and other components to wipe and brush the window with rain, snow, dust, or dirt on the glass. Furthermore, the drive motor may also comprise a motor socket, on which the drive motor is mounted, and the output shaft 1 of the drive motor is connected to the scraper arm 5 and the acting element 3. When the output shaft 1 of the driving motor rotates, the scraping arm 5 and the acting piece 3 rotate along with the output shaft 1 of the driving motor by taking the central line of the output shaft 1 of the driving motor as an axis. In the movement process of the scraping arm 5, if the controller detects that the frictional resistance between the scraping blade and the windshield is large, the controller sends a control instruction to the driving motor to control the driving motor to increase the output power, if the controller detects that the frictional resistance between the scraping blade and the windshield is small, the controller sends a control instruction to the driving motor to reduce the output power of the driving motor, and the controller controls the rotation speed of the driving motor through the output power of the driving motor to further control the rotation speed of the scraping arm 5 so as to adapt to different working environments.

Fig. 1 is a schematic view of an overall structure of an electric wiper according to an embodiment of the present invention, and as shown in fig. 1, the electric wiper further includes a mounting plate 4, a mounting hole of an output shaft 1 is formed in the mounting plate 4, and the mounting hole in the mounting plate 4 is generally formed when an air cover plate is directly injection-molded by a mold, and is generally circular and used for mounting the output shaft 1.

When the device is installed, the output shaft 1 penetrates through the installation plate 4 and is vertically installed on the installation plate 4, the output shaft 1 rotates by taking the central line of the output shaft as a shaft, the acting piece 3 is arranged at the first end of the output shaft 1, the scraping arm 5 is arranged at the second end of the output shaft 1, the acting piece 3 and the scraping arm 5 have the same installation angle, and the scraping arm 5 and the acting piece 3 swing synchronously.

The working principle of the electric windscreen wiper is as follows:

the initial position of the scraping arm 5 is preset to be a right limit position, when the scraping arm 5 runs leftwards, the scraping arm reaches the left limit position, at the moment, the acting piece 3 which is the same as the installation angle of the scraping arm 5 and synchronously swings passes through a detection port of the photoelectric switch 2, the acting piece 3 shields light entering the photoelectric switch 2, the photoelectric switch 2 detects the change of the light and sends a trigger signal to the controller, the controller receives the trigger signal sent by the photoelectric switch 2, the controller analyzes the trigger signal of the photoelectric switch 2, the analysis result shows that the scraping arm 5 is located at the left limit position, the controller outputs an instruction to control the driving motor to rotate reversely, and the driving motor drives the scraping arm 5 to run rightwards.

When reaching right extreme position, with scrape 5 installation angle of arm the same and synchronous wobbling action 3 passes through photoelectric switch 2, action 3 shelters from the light that gets into photoelectric switch 2, photoelectric switch 2 detects the change of light, send trigger signal for the controller, the trigger signal that photoelectric switch 2 sent is received to the controller, the controller analyzes photoelectric switch 2's trigger signal, the analysis result shows scraping arm 5 and being in right extreme position this moment, controller output command control driving motor reversal, driving motor drives and scrapes arm 5 and operates to the left.

Under the control of controller, scrape arm 5 and be reciprocating motion, at whole motion in-process, action 3 shelters from the light that gets into photoelectric switch 2 through moving photoelectric switch 2's detection zone, and then triggers the change of photoelectric switch 2 signal, and photoelectric switch 2 and action 3 do not take place direct contact, can not take place jamming and wearing and tearing, and detection speed is fast, and the reliability is higher.

As another embodiment, the acting element 3 is arranged directly on the wiper arm 5. The first photoelectric switch 21 and the second photoelectric switch 22 are arranged at the extreme positions at the two ends of the movement range of the acting element 3 along with the scraping arm 5.

Further, the scraping arm 5 and the acting element 3 are of an integral structure, the acting element 3 is a component of the scraping arm 5, and the joint of the acting element 3 and the scraping arm 5 can be in arc transition or chamfer; the acting element 3 and the scraping arm 5 can be manufactured in an integrated manner, namely, the acting element 3 and the scraping arm 5 are a die, and the acting element 3 and the scraping arm 5 are directly manufactured in an integrated manner by one die; or the acting element 3 can be regarded as a projecting part in the component part of the wiper arm 5.

The photoelectric switch 2 is arranged at the limit position of the movement of the scraping arm 5, when the scraping arm 5 moves to the detection area of the photoelectric switch 2, the photoelectric switch 2 detects that the scraping arm 5 is at the right (preset) limit position, the scraping arm 5 shields the light entering the photoelectric switch 2, the photoelectric switch 2 detects the change of the light and sends a trigger signal to the controller, the controller receives the trigger signal sent by the photoelectric switch 2, an output instruction controls the driving motor to rotate reversely, the driving motor drives the scraping arm 5 to rotate leftwards, when the scraping arm 5 reaches the left limit position, the photoelectric switch 2 detects that the scraping arm 5 is at the left limit position, the photoelectric switch 2 receives the trigger signal of the scraping arm 5 and sends a trigger signal to the controller, the controller receives the trigger signal sent by the photoelectric switch 2 and outputs an instruction to control the driving motor to rotate reversely, and in the reciprocating movement process of the scraping arm 5, the scraping arm 5 shields the light entering the photoelectric switch 2, and then trigger the change of photoelectric switch 2 signal, photoelectric switch 2 and scrape arm 5 and do not take place direct contact, can not take place jamming and wearing and tearing, and detection speed is fast, and the reliability is higher.

As another embodiment of the acting element, please refer to fig. 2 and 3, the acting element 3 includes a disc body 33 mounted on the output shaft 1, and the disc body 33 is a disc structure with the output shaft 1 as a central axis. The outer peripheral edge of the disc body 33 is provided with a trigger portion 34, and the trigger portion 34 is a projection extending radially from the disc body 33. The trigger part 34 is used to block light entering the photoelectric switch 2 when the wiper arm 5 is rotated to the limit position, so that the trigger controller drives the driving motor connected to the wiper arm 5 to rotate reversely or stop.

As another embodiment of the acting element, please refer to fig. 4, the acting element 3 includes a disc body 33 mounted on the output shaft, and the disc body 33 is a disc structure with the output shaft 1 as a central axis. The disc body 33 includes a penetrating portion 35 penetrating therethrough and a non-penetrating trigger portion 34 in a circumferential direction around the output shaft 1. It can be understood that the through part 35 does not block light and has no influence on the photoelectric switch. The non-through triggering portion 34 is used for blocking light entering the photoelectric switch 2 when the wiper arm 5 rotates to the limit position, so that the triggering controller drives the driving motor connected with the wiper arm 5 to rotate reversely or stop.

The acting element 3 can also be of a code disc structure, and the effective area of the acting element 3 triggered by the photoelectric switch 2 is more than or equal to 1mm²。

Fig. 5 is a schematic structural view of an electric wiper according to still another embodiment of the present invention;

as shown in fig. 5, the first end of the output shaft 1 is provided with two acting pieces 3, namely a first acting piece 31 and a second acting piece 32, namely, the first acting piece 31 and the second acting piece 32 are respectively arranged on the output shaft 1 by taking the center line of the output shaft 1 as the center of a circle and at an angle of 180 ° or 120 °; alternatively, the first operating element 31 and the second operating element 32 may be fixed to the output shaft 1 in a V-shape or may be engaged with the output shaft, and the first operating element 31 and the second operating element 32 may be mounted in any manner other than fixed engagement. The first acting member 31 swings in synchronization with the wiper arm 5, and at the same time, the second acting member 32 swings in synchronization with the wiper arm 5.

Presetting the initial position of the scraping arm 5 as a right limit position, at the moment, the first action piece 31 passes through a detection area of the photoelectric switch 2, the action piece 31 blocks light entering the photoelectric switch 2, the photoelectric switch 2 detects the change of the light and sends a trigger signal to the controller, the controller receives the trigger signal sent by the photoelectric switch 2 and analyzes that the scraping arm 5 is at the right limit position, the controller outputs an instruction to control the driving motor to rotate reversely, the driving motor drives the scraping arm 5 to rotate leftwards, when the scraping arm 5 reaches the left limit position, at the same time, the second action piece 32 passes through the detection area of the photoelectric switch 2, the action piece 32 blocks the light entering the photoelectric switch 2, the photoelectric switch 2 detects the change of the light and sends the trigger signal to the controller, the controller receives the trigger signal sent by the photoelectric switch 2 and analyzes that the scraping arm 5 is at the left limit position, the controller outputs an instruction to control the driving motor to rotate reversely, and the driving motor drives the scraping arm 5 to rotate rightwards again.

Under the control of the controller, when rainwater, snow, dust or dirt on the windshield glass is not cleaned up and the sight of a driver is continuously influenced, the scraping arm 5 reciprocates until the rainwater, the snow, the dust or the dirt on the windshield glass is cleaned up. Scrape arm 5 at whole reciprocating motion's in-process, act on 31 and act on 32 and pass through photoelectric switch 2's detection zone respectively to shelter from the light that gets into photoelectric switch 2, and then trigger the change of 2 signals of photoelectric switch, photoelectric switch 2 and act on 31 and act on 32 and do not take place direct contact, can not take place jamming and wearing and tearing, and detection speed is fast, and the reliability is higher.

Further, in the above-mentioned electric wiper, the photoelectric switch 2 is installed on the side of the mounting plate 4 away from the wiper arm 5. In this embodiment, one or two photoelectric switches 2 may be provided, preferably, the photoelectric switches 2 are fixedly disposed on the mounting plate 4 with the output shaft 1 as a center and the radius of 30mm, or the first photoelectric switch 21 and the second photoelectric switch 22 are respectively fixedly disposed on the mounting plate 4 with the output shaft 1 as a center and the radius of 30mm and the angle of 120 ° in an array.

The invention also provides a vehicle which comprises the electric window wiper. The implementation principle and the technical effect are similar, and the detailed description is omitted here.

The embodiments or implementation modes in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present specification, reference to the description of the terms "one embodiment", "some embodiments", "an illustrative embodiment", "an example", "a specific example", or "some examples", etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.