Wiper devices, cabs and work vehicles

Abstract

The present invention provides a windshield wiper device, a cab and a working vehicle. The windshield wiper device comprises: a wiper brush; a wiper arm, one end of which is connected to the wiper brush; an output shaft assembly, one end of which is connected to an end of the wiper arm away from the wiper brush; a coupling assembly; a driving mechanism connected to the coupling assembly; a telescopic rod, which is arranged on the output shaft assembly or the coupling assembly and is used to realize the connection between the coupling assembly and the output shaft assembly, and the telescopic rod can be extended and retracted along the connection direction between the output shaft assembly and the coupling assembly. The present invention connects the coupling assembly and the output shaft assembly through the telescopic rod, which can ensure the connection between the output shaft assembly and the coupling assembly, which can not only improve the reliability of the connection between the driving mechanism and the output shaft assembly, but also quickly transmit torque, and effectively improve the versatility and stability of the use of the windshield wiper device.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery, and in particular to a windshield wiper device, a cab and a working vehicle. Background Art

[0002] At present, the conventional form of windshield wipers for cars or work vehicles is an external glass window wiper and wiper arm, with a built-in drive motor. The drive motor is connected to the output shaft of the wiper arm as a whole, and the drive motor cannot be quickly disconnected from the output shaft of the wiper arm. However, in special circumstances (such as the driver using the window to escape), it is necessary to disconnect the output shaft of the wiper arm from the drive motor so as to quickly open the window. Summary of the invention

[0003] The present invention aims to solve at least one of the above technical problems.

[0004] One of the objects of the present invention is to provide a wiper device.

[0005] A second object of the present invention is to provide a cab.

[0006] A third object of the present invention is to provide a working vehicle.

[0007] To achieve the first purpose of the present invention, an embodiment of the present invention provides a wiper device, including: a wiper; a wiper arm, one end of which is connected to the wiper; an output shaft assembly, one end of which is connected to an end of the wiper arm away from the wiper, and a driving mechanism connected to a coupling assembly; a telescopic rod, which is arranged on the output shaft assembly or the coupling assembly and is used to realize the connection between the coupling assembly and the output shaft assembly, and the telescopic rod can be extended and retracted along the connection direction between the output shaft assembly and the coupling assembly.

[0008] In this technical solution, a coupling assembly is provided between the driving mechanism and the output shaft assembly, and the coupling assembly is connected to the output shaft assembly through a telescopic rod to drive the output shaft assembly to rotate. The rotation of the output shaft assembly drives the scraper arm to rotate, so that the scraper arm drives the scraper to realize the scraping function. Specifically, when the wiper device is used for a vehicle window, after the vehicle window is opened, the output shaft assembly and the coupling assembly are separated from each other, and when the vehicle window is to be closed, in order to be able to close the vehicle window, the output shaft assembly and the coupling assembly need to be connected again, and at this time, the output shaft assembly and the coupling assembly may have been misaligned in the connection direction. The connection direction specifically refers to the combination direction when the output shaft assembly and the coupling assembly can be accurately connected. The connection direction can be the axial direction of the coupling assembly, or it can be a direction deviating from the axial direction, etc. In the case where the output shaft assembly and the coupling assembly are misaligned, it is difficult to connect the output shaft assembly and the coupling assembly. The telescopic rod is arranged between the output shaft assembly and the coupling assembly. When the telescopic rod rotates relative to the output shaft assembly or the coupling assembly, the telescopic rod can be extended and retracted in the connection direction and has an alignment function, thereby ensuring the combination of the output shaft assembly and the coupling assembly.

[0009] When the telescopic rod is disconnected from the output shaft assembly, the coupling assembly, the driving mechanism and the output shaft assembly are separated, thereby reducing the weight attached to the window glass. The coupling assembly can be selectively connected or disconnected with the output shaft of the output shaft assembly, which not only enables reliable connection between the driving mechanism and the output shaft assembly, but also reliable and rapid torque transmission, effectively improving the versatility of the wiper device and improving the stability of the wiper device.

[0010] In addition, the technical solution provided by the present invention may also have the following additional technical features:

[0011] In the above technical solution, the telescopic rod includes: a rod body; a first elastic member, which is arranged in the coupling assembly, one end of the first elastic member is connected to the coupling assembly, and the other end is connected to the rod body, and the first elastic member is used to drive one end of the rod body close to the output shaft assembly to extend out of the coupling assembly; wherein the output shaft assembly is provided with a socket for cooperating with the end of the rod body extending out of the coupling assembly.

[0012] In the technical scheme, the telescopic rod is arranged on the coupling assembly, so that the rod body extends out of the end of the coupling assembly near the output shaft assembly, and is used to extend into the socket to connect the output shaft assembly, or the rod body is separated from the socket, and the rod body is disconnected from the output shaft assembly. Specifically, when the output shaft assembly and the coupling assembly are to be connected, the end of the rod body away from the coupling assembly touches the output shaft assembly, and the telescopic rod retracts in a short period of time due to its elasticity, which can not only ensure that the window is closed, but also when the coupling assembly reaches the position of the socket in the process of driving the telescopic rod to rotate, the rod body can be inserted into the socket to connect the output shaft assembly with the coupling assembly. Therefore, the mutual cooperation between the telescopic rod and the socket can ensure that the output shaft assembly can be combined with the coupling assembly again after disconnection. At least a part of the body of the coupling assembly is provided with one or more connecting holes, for example, a first connecting hole and a second connecting hole can be provided radially symmetrically, and the first connecting hole and the second connecting hole are both axially arranged, that is, the center line of the first connecting hole, the center line of the second connecting hole and the axis of the body of the coupling assembly are parallel to each other. Taking the provision of a telescopic rod as an example, the first elastic member may be a spring or the like, the first elastic member is provided in the first connecting hole, one end of the first elastic member is connected to the end cap, the end cap is used to be connected to at least a part of the body of the coupling assembly, for example, it can be connected by a fastener such as a screw, so as to prevent the telescopic rod from being separated from the first connecting hole. The other end of the first elastic member is connected to the rod body. Specifically, the rod body includes a large diameter portion and a small diameter portion of unequal diameters, wherein a hole is provided in the large diameter portion, and the first elastic member extends into the hole and is connected to the large diameter portion. The small diameter portion can be extended into the jack and can be used to connect the output shaft assembly. A step is formed between the large diameter portion and the small diameter portion, which can limit the output shaft assembly and prevent the output shaft assembly and the body of the coupling assembly from colliding with each other and generating noise. When the telescopic rod cannot be inserted into the jack, since the telescopic rod has the function of axial telescoping, the end of the telescopic rod will be retracted into the body of the coupling assembly, and once the telescopic rod is rotated to a position aligned with the jack, the telescopic rod will be connected to the output shaft assembly after being ejected. Therefore, the telescopic rod ensures the connection between the coupling assembly and the output shaft assembly. When the connection between the coupling assembly and the output shaft assembly needs to be disconnected, only the output shaft assembly needs to be disconnected to separate the jack from the rod body of the telescopic rod. The structure is simple and easy to implement.

[0013] In any of the above technical solutions, the output shaft assembly includes: a positioning plate; a positioning disk, which is coaxial with the positioning plate and spaced apart from each other; a main connecting shaft, which passes through the positioning plate and the positioning disk; wherein one end of the main connecting shaft extending out of the positioning plate is connected to the scraper arm, and one end of the main connecting shaft extending out of the positioning disk extends into the coupling assembly, and a socket is provided on the positioning disk.

[0014] In this technical solution, a first positioning hole is provided on the positioning plate, which is used for the main connecting shaft to extend out of the positioning plate after passing through. Considering that the thickness of the positioning plate is not too thick, a sleeve is provided on the plate surface on both sides of the positioning plate, and the two sleeves are coaxially arranged with the first positioning hole to support and further limit the main connecting shaft, and can ensure that the axial position of the main connecting shaft is stable and radial movement does not occur, so as to ensure the reliability of the connection between the main connecting shaft and the scraper arm, and can further avoid noise. The jack is provided on the positioning plate, and the positioning plate and the positioning plate are arranged at intervals from each other, considering that the rod body can avoid colliding with the positioning plate and making noise after being inserted into the jack, and avoid the possibility of wear due to collision. One end of the main connecting shaft extending out of the positioning plate extends into the coupling assembly, which plays a guiding role when the output shaft assembly and the coupling assembly are connected through the telescopic rod, which is more conducive to the connection between the telescopic rod and the positioning plate. In addition, the disk surface of the positioning plate facing the coupling assembly can better position the telescopic rod, so as to further ensure that the telescopic rod is connected to the positioning plate more quickly.

[0015] In any of the above technical solutions, a plurality of connecting holes are arranged on the coupling assembly, and telescopic rods are arranged in the plurality of connecting holes; a plurality of plug holes are arranged on the output shaft assembly; wherein the telescopic rods correspond to the plug holes one by one, the plurality of connecting holes are evenly arranged along the circumferential direction of the coupling assembly, the plurality of plug holes are evenly arranged along the circumferential direction of the positioning plate, and the length direction of the connecting holes is parallel to the connection direction.

[0016] In this technical solution, the telescopic rod is provided in multiple numbers, for example, it can be provided in two numbers, which can be subjected to force evenly, and can ensure the reliability and stability when the telescopic rod is connected to the positioning plate, and can further reduce the generation of noise.

[0017] In any of the above technical solutions, the insertion hole is a long waist-shaped hole, and the length direction of the waist-shaped hole is arranged along the radial direction of the positioning plate.

[0018] In this technical solution, the socket is a waist-shaped hole with a small gap in the up and down directions, which can prevent the positioning plate from colliding with the rod body and making abnormal noises during the back and forth rotation. It can also effectively adjust the left and right deviations between the motor drive shaft and the main connecting shaft.

[0019] In any of the above technical solutions, the coupling assembly includes: a first coupling part, which is provided with a slide groove in the radial direction; a second coupling part, which is arranged in the slide groove; a first axial hole, which is arranged at one end of the first coupling part close to the output shaft assembly; and a second axial hole, which is arranged on the second coupling part; wherein the first axial hole is used to cooperate with one end of the main connecting shaft extending out of the positioning plate, the second axial hole is connected to the driving mechanism, and the telescopic rod is arranged on the first coupling part.

[0020] In this technical solution, the first coupling part has a cylindrical structure, and the slide groove is radially arranged and penetrates to the outer circumferential surface of the first coupling part and the end surface close to the driving structure. The second coupling part is a block structure, which is arranged in the slide groove and can slide radially. The axial slot hole of the slide groove includes a large-diameter slot hole and a small-diameter slot hole. Correspondingly, the second coupling part has a convex cross-section so that it will not fall off axially when inserted into the slide groove. One end of the second coupling part close to the outer circumferential surface of the first coupling part can be connected to the first coupling part through a pressure cover respectively, so that the second coupling part will not fall off radially. The first axial hole is used for the main connecting shaft to extend into, and the second axial hole is used to connect the motor drive shaft.

[0021] In any of the above technical solutions, the second coupling part is provided with a radial adjustment mechanism, which includes: a second elastic member, arranged at one end of the second coupling part; a first pressure cover, fixedly connected to the first coupling part; a third elastic member, arranged at the other end of the second coupling part; a second pressure cover, fixedly connected to the first coupling part; wherein, the two ends of the second elastic member respectively abut against the second coupling part and the first pressure cover, and the two ends of the third elastic member respectively abut against the second coupling part and the second pressure cover.

[0022] In this technical solution, the second coupling part is provided with radial blind holes on two opposite sides, the second elastic member and the third elastic member extend into the blind holes respectively, one end of the second elastic member abuts against one of the blind holes, the other end of the second elastic member is connected to the first gland, one end of the third elastic member abuts against the other blind hole, and the other end of the third elastic member abuts against the second gland. The second elastic member and the third elastic member are respectively provided at the upper and lower ends in the radial direction, and the second elastic member and the third elastic member can be springs, etc., so that the radial movement of the radial coupling assembly can be automatically adjusted.

[0023] In any of the above technical solutions, the wiper device also includes: a secondary connecting shaft, which is arranged on the positioning plate, the secondary connecting shaft extends out of the positioning plate and is connected to the wiper arm; wherein the wiper arm includes a first arm and a second arm, one end of the main connecting shaft extends out of the positioning plate and is connected to the first arm, and one end of the secondary connecting shaft extends out of the positioning plate and is connected to the second arm.

[0024] In this technical solution, the positioning plate is also provided with a second positioning hole. For the same reason, the second positioning hole is also coaxially provided with a sleeve for the secondary connecting shaft to pass through. The double-arm wiper device can be connected through the main connecting shaft and the secondary connecting shaft, which improves applicability.

[0025] To achieve the second purpose of the present invention, an embodiment of the present invention provides a cab, comprising: a vehicle window and a wiper device in any embodiment; wherein the wiper brush, wiper arm and output shaft assembly are arranged on the vehicle window, and the drive mechanism and coupling assembly are arranged in the cab.

[0026] In this technical solution, since the cab in the invention includes the wiper device in any embodiment, the cab in the present invention has all the beneficial effects of the wiper device in any embodiment.

[0027] To achieve the third objective of the present invention, an embodiment of the present invention provides a work vehicle, comprising: a vehicle body; a cab, the vehicle body being connected to the cab; or a wiper device in any one of the embodiments.

[0028] In this technical solution, the window is arranged on the cab, and the window is opened or closed relative to the cab; the scraper, scraper arm and output shaft assembly are arranged on the window, the drive mechanism and coupling assembly are arranged on the vehicle body inside the window, and the output shaft assembly, scraper arm and scraper are installed on both sides of the windshield window (or partial sheet metal structure); the drive mechanism and coupling assembly are installed on the main structure of the cab, which can reduce the weight of the window. In addition, since the working vehicle in the invention includes the wiper device in any embodiment, the working vehicle in the present invention also has all the beneficial effects of the wiper device in any embodiment.

[0029] Additional aspects and advantages of the present invention will become apparent from the following description or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0031] Figure 1 It is one of the schematic diagrams of the wiper structure in the related art of the present invention;

[0032] Figure 2 This is the second schematic diagram of the wiper structure in the related art of the present invention;

[0033] Figure 3 It is one of the schematic diagrams of opening the rear window assembly in the related art of the present invention;

[0034] Figure 4 This is the second schematic diagram of the opening rear window assembly in the related art of the present invention;

[0035] Figure 5 It is one of the schematic diagrams of the automobile wiper motor in the related technology of the present invention;

[0036] Figure 6 This is the second schematic diagram of the automobile wiper motor in the related art of the present invention;

[0037] Figure 7 It is one of the schematic diagrams of the wiper device and the camera in the related art of the present invention;

[0038] Figure 8It is the second schematic diagram of the wiper device and the camera in the related art of the present invention;

[0039] Fig. 9 is one of the three-dimensional structural schematic diagrams of the wiper device in some embodiments of the present invention;

[0040] Fig.10 is a second schematic diagram of the three-dimensional structure of the wiper device in some embodiments of the present invention;

[0041] Fig.11 An exploded schematic diagram of a wiper device in some embodiments of the present invention;

[0042] Fig.12 is an exploded schematic diagram of a coupling assembly of a wiper device in some embodiments of the present invention;

[0043] Fig.13 is a schematic diagram of the exploded structure of a coupling assembly of a wiper device in some embodiments of the present invention;

[0044] Fig.14 is an exploded schematic diagram of an output shaft assembly of a wiper device in some embodiments of the present invention;

[0045] Fig.15 is a schematic diagram of the front structural view of the first coupling shaft portion of the wiper device in some embodiments of the present invention;

[0046] Fig.16 yes Fig.15 AA section structural diagram;

[0047] Fig.17 yes Fig.15 BB section structure schematic diagram;

[0048] Fig.18 is a schematic diagram of the front view of the second coupling shaft portion of the wiper device in some embodiments of the present invention;

[0049] Fig.19 yes Fig.18 The CC section structure diagram in FIG.

[0050] Fig. 20 yes Fig.18 DD section structure schematic diagram;

[0051] Fig.21 It is one of the three-dimensional structural schematic diagrams of a working vehicle according to an embodiment of the present invention;

[0052] Fig. 22 This is a second schematic diagram of the three-dimensional structure of a working vehicle according to an embodiment of the present invention;

[0053] Fig.23This is a third schematic diagram of the three-dimensional structure of a working vehicle according to an embodiment of the present invention;

[0054] Fig.24 This is the fourth schematic diagram of the three-dimensional structure of the working vehicle according to one embodiment of the present invention.

[0055] in, Figures 1 to 8 The corresponding relationship between the reference numerals and component names in the figure is:

[0056] 100': wiper structure, 200': opening rear window assembly, 300': car wiper motor, 400': wiper device and camera.

[0057] in, Figures 9 to 24 The corresponding relationship between the reference numerals and component names in the figure is:

[0058] 1: wiper device, 10: wiper, 20: wiper arm, 201: first arm, 202: second arm, 30: output shaft assembly, 301: positioning plate, 3011: first positioning hole, 3012: second positioning hole, 302: positioning plate, 3021: socket, 303: main connecting shaft, 304: auxiliary connecting shaft, 305: sleeve, 40: coupling assembly, 401: first coupling part, 4011: first shaft hole, 4012: first connecting hole, 4013: second Connecting hole, 402: second coupling part, 4021: second shaft hole, 4022: blind hole, 4023: slide groove, 403: rod body, 404: first elastic member, 405: end cover, 406: second elastic member, 407: first pressure cover, 408: third elastic member, 409: second pressure cover, 410: telescopic rod, 420: radial adjustment mechanism, 50: driving mechanism, 501: motor body, 502: motor driving shaft, 21: driving cab, 211: car window. DETAILED DESCRIPTION

[0059] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0060] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0061] In the related art, at present, the wiper components of automobiles or engineering vehicles mainly include: (1) conventional external wiper with connecting rod mechanism, that is, the connecting rod mechanism (external) is connected to the output shaft as a whole, the motor power range is wide, and it can be selected according to the glass and the length of the wiper arm and wiper, but the appearance is large and the weight is heavy; (2) conventional internal wiper with connecting rod mechanism, that is, the connecting rod mechanism (built into the motor structure) is connected to the output shaft as a whole, the motor power is usually small, suitable for the situation where the wiper arm and wiper are small in size and the installation space is small, or the motor is fixed on the glass (the weight of the motor needs to be controlled as small as possible and part of the wiring harness is exposed); (3) the connecting rod mechanism and the output shaft can be separated or combined, suitable for the situation where the glass needs to be opened and the wiper arm and wiper are long, the motor weight is large, and the wiring harness is hidden in the car, and the motor connecting rod can be internal or external.

[0062] Specifically, Figure 1 and Figure 2 As shown, a wiper structure 100' for cranes, especially mobile or crawler cranes, is disclosed, including a wiper motor, a connecting rod mechanism, an output shaft, a connecting plate with a circular arc hole (located on the vehicle body), a wiper arm and a wiper brush, a spring and a pin (located on the glass). The motor output shaft drives the connecting plate to rotate a certain angle, and the wiper arm pin is combined with or separated from the connecting plate. The wiper structure 100' uses a spring pin to insert or leave the connecting plate with a circular arc hole. When the pin is inserted into the connecting plate, the pin collides with the connecting plate when switching left and right, resulting in loud noise and easy wear.

[0063] like Figure 3 and Figure 4 As shown, an opening rear window assembly 200' for a trunk door of a motor vehicle is disclosed, including a wiper motor and an output shaft (located on the vehicle body), a wiper arm and a wiper (located on the glass), and the motor output shaft can be combined with or separated from the wiper arm drive shaft. The opening rear window assembly 200' only describes that the motor output shaft and the wiper arm shaft can be combined or separated, without a specific structure, and does not consider how to achieve combination under deviation.

[0064] like Figure 5 and Figure 6 As shown, a car wiper motor 300' is disclosed, including a motor and a reduction box, the reduction box including a housing, a turbine, and a worm, the worm is connected to the motor output shaft through a coupling, and the two ends of the worm are fixed, so that the worm and the turbine are kept in a good meshing state, reducing wear, reducing noise, and increasing service life. The car wiper motor 300' connects the worm inside the motor and the motor shaft through a coupling, and they are all in a meshing state, and there is no separate working state.

[0065] like Figure 7 and Figure 8As shown, a wiper device and camera 400' are disclosed, including a wiper mechanism, a motor, and a controller for controlling the rotation of the motor. Limiting posts are respectively provided on the left and right sides of the column connected to the motor output shaft. When the column contacts the limiting posts, the controller controls the motor to change the direction. There is no need to use transmission gears, limit detection optical couplers, light shielding sheets and other components, and the structure is simple; the output shaft of the motor is respectively connected to the column and the wiper shaft of the wiper mechanism through a coupling. The wiper device and camera 400' connect the motor shaft and the output shaft, and the output shaft and the column through a coupling, and they are all in a meshing state, and there is no separate working state.

[0066] Refer to the following Figures 9 to 24 The wiper device and the working vehicle according to some embodiments of the present invention are described.

[0067] Example 1

[0068] like Figures 9 to 11 As shown, the wiper device 1 provided by the embodiment of the first aspect of the present invention comprises: a wiper brush 10, a wiper arm 20, an output shaft assembly 30, a coupling assembly 40, a telescopic rod 410 and a driving mechanism 50, one end of the wiper arm 20 is connected to the wiper brush 10, one end of the output shaft assembly 30 is connected to an end of the wiper arm 20 away from the wiper brush 10, and the driving mechanism 50 is connected to the coupling assembly 40; the telescopic rod 410 is arranged on the output shaft assembly 30 or the coupling assembly 40, and is used to realize the connection between the coupling assembly 40 and the output shaft assembly 30, and the telescopic rod 410 can be extended and retracted along the connection direction between the output shaft assembly 30 and the coupling assembly 40.

[0069] In the wiper device 1 provided by the embodiment of the first aspect of the present invention, the driving mechanism 50 includes a motor body 501 and a motor driving shaft 502 connected to the motor body 501, and the motor driving shaft 502 is connected to the output shaft assembly 30 through the coupling assembly 40, such as Fig.11 shown.

[0070] By arranging the coupling assembly 40 between the driving mechanism 50 and the output shaft assembly 30, the coupling assembly 40 is connected to the output shaft assembly 30 through the telescopic rod 410 to drive the output shaft assembly 30 to rotate, and the output shaft assembly 30 rotates to drive the scraper arm 20 to rotate, so that the scraper arm 20 drives the scraper 10 to achieve the scraping function. Specifically, when the wiper device 1 is used for a vehicle window, after the vehicle window is opened, the output shaft assembly 30 and the coupling assembly 40 are separated from each other, and when the vehicle window is to be closed, in order to be able to close the vehicle window, the output shaft assembly 30 and the coupling assembly 40 need to be connected again, and at this time, the output shaft assembly 30 and the coupling assembly 40 may have been misaligned in the connection direction, and the connection direction specifically refers to the combination direction when the output shaft assembly 30 and the coupling assembly 40 can be accurately connected. The connection direction can be the axial direction of the coupling assembly, or it can be a direction deviating from the axial direction, etc. In the case that the output shaft assembly 30 and the coupling assembly 40 are misaligned, it is difficult to connect the output shaft assembly 30 and the coupling assembly 40. The telescopic rod 410 is arranged between the output shaft assembly 30 and the coupling assembly 40. When the telescopic rod 410 rotates relative to the output shaft assembly 30 or the coupling assembly 40, the telescopic rod 410 has an alignment function because it can be extended and retracted in the connection direction, thereby ensuring the connection between the output shaft assembly 30 and the coupling assembly 40.

[0071] When the telescopic rod 410 is disconnected from the output shaft assembly 30, the coupling assembly 40 and the drive mechanism 50 are separated from the output shaft assembly 30, thereby reducing the weight attached to the window glass. The coupling assembly 40 can be selectively connected or disconnected with the output shaft of the output shaft assembly 30, which not only makes the connection between the drive mechanism 50 and the output shaft assembly 30 reliable, but also transmits torque reliably and quickly, effectively improving the versatility of the wiper device 1 and improving the stability of the wiper device 1.

[0072] Example 2

[0073] like Fig.12 and Fig.14 As shown, this embodiment provides a wiper device 1. In addition to the technical features of the above embodiment, this embodiment also includes the following technical features:

[0074] The telescopic rod 410 includes: a rod body 403 and a first elastic member 404. The first elastic member 404 is arranged in the coupling assembly 40. One end of the first elastic member 404 is connected to the coupling assembly 40, and the other end is connected to the rod body 403. The first elastic member 404 is used to drive the end of the rod body 403 close to the output shaft assembly 30 to extend out of the coupling assembly 40; wherein, the output shaft assembly 30 is provided with a socket 3021 for cooperating with the end of the rod body 403 extending out of the coupling assembly 40.

[0075] In this embodiment, the telescopic rod 410 is arranged on the coupling assembly 30, so that the rod body 403 extends out of the end of the coupling assembly 40 close to the output shaft assembly 30, and is used to extend into the insertion hole 3021 to connect the output shaft assembly 30, or the rod body 403 is separated from the insertion hole 3021, and the rod body 403 is disconnected from the output shaft assembly 30. Specifically, when the output shaft assembly 30 and the coupling assembly 40 are to be connected, the end of the rod body 403 away from the coupling assembly 40 touches the output shaft assembly 30, and the telescopic rod 410 retracts in a short time due to its elasticity, which can not only ensure that the car window is closed tightly, but also when the coupling assembly 40 reaches the position of the insertion hole 3021 in the process of driving the telescopic rod 410 to rotate, the rod body 403 can be inserted into the insertion hole 3021 to connect the output shaft assembly 30 with the coupling assembly 40. Therefore, the mutual cooperation between the telescopic rod 410 and the jack 3021 can ensure that the output shaft assembly 30 can be re-combined with the coupling assembly 40 after being disconnected. One or more connecting holes are provided in at least a part of the body of the coupling assembly 40. For example, a first connecting hole 4012 and a second connecting hole 4013 can be provided radially symmetrically, and the first connecting hole 4012 and the second connecting hole 4013 are both axially arranged, that is, the center line of the first connecting hole 4012, the center line of the second connecting hole 4013 and the axis of the body of the coupling assembly 40 are parallel to each other. Taking the provision of a telescopic rod 410 as an example, the first elastic member 404 can be a spring, etc., the first elastic member 404 is provided in the first connecting hole 4012, one end of the first elastic member 404 is connected to the end cover 405, and the end cover 405 is used to connect with at least a part of the body of the coupling assembly 40, for example, it can be connected by fasteners such as screws, so as to prevent the telescopic rod 410 from being separated from the first connecting hole 4012. The other end of the first elastic member 404 is connected to the rod body 403. Specifically, the rod body 403 includes a large diameter portion and a small diameter portion of unequal diameters, wherein a hole is provided in the large diameter portion, and the first elastic member 404 extends into the hole and is connected to the large diameter portion. The small diameter portion can extend into the insertion hole 3021 and can be used to connect the output shaft assembly 30. A step is formed between the large diameter portion and the small diameter portion, which can limit the output shaft assembly 30 and prevent the output shaft assembly 30 and the body of the coupling assembly 40 from colliding with each other and generating noise. When the telescopic rod 410 cannot be inserted into the insertion hole 3021, since the telescopic rod 410 has the function of axial telescopic expansion, the end of the telescopic rod 410 will be retracted into the body of the coupling assembly 40, and once the telescopic rod 410 rotates to a position aligned with the insertion hole 3021, the telescopic rod 410 will be connected to the output shaft assembly 30 after popping out. Therefore, the telescopic rod 410 ensures the connection between the coupling assembly 40 and the output shaft assembly 30. When the connection between the coupling assembly 40 and the output shaft assembly 30 needs to be disconnected, the output shaft assembly 30 only needs to be detached to separate the insertion hole 3021 from the rod body 403 of the telescopic rod 410. The structure is simple and easy to implement.

[0076] Example 3

[0077] like Fig.14 As shown, this embodiment provides a wiper device 1. In addition to the technical features of the above embodiment, this embodiment also includes the following technical features:

[0078] The output shaft assembly 30 includes: a positioning plate 301, a positioning disk 302 and a main connecting shaft 303. The positioning disk 302 is coaxial with the positioning plate 301 and is spaced apart from each other. The main connecting shaft 303 passes through the positioning plate 301 and the positioning disk 302. Among them, one end of the main connecting shaft 303 extending out of the positioning plate 301 is connected to the scraper arm 20, and one end of the main connecting shaft 303 extending out of the positioning disk 302 extends into the coupling assembly 40, and the socket 3021 is provided on the positioning disk 302.

[0079] In this embodiment, a first positioning hole 3011 is provided on the positioning plate 301, for the main connecting shaft 303 to pass through and extend out of the positioning plate 301. Considering that the thickness of the positioning plate 301 should not be too thick, a sleeve 305 is provided on the plate surface on both sides of the positioning plate 301, and the two sleeves 305 are coaxially arranged with the first positioning hole 3011 to support and further limit the main connecting shaft 303, and can ensure that the axial position of the main connecting shaft 303 is stable and does not move radially, thereby ensuring the reliability of the connection between the main connecting shaft 303 and the scraper arm 20, and further avoiding noise. The plug hole 3021 is provided on the positioning plate 302, and the positioning plate 302 and the positioning plate 301 are spaced apart from each other, considering that after the rod body 403 is inserted into the plug hole 3021, it can avoid colliding with the positioning plate 301 and making noise, and avoid the possibility of wear due to collision. One end of the main connecting shaft 303 extending out of the positioning plate 302 extends into the coupling assembly 40, which plays a guiding role when the output shaft assembly 30 and the coupling assembly 40 are connected through the telescopic rod 410, and is more conducive to the connection between the telescopic rod 410 and the positioning plate 302. In addition, the disk surface of the positioning plate 302 facing the coupling assembly 40 can better position the telescopic rod 410, so as to further ensure that the telescopic rod 410 is connected to the positioning plate 302 more quickly.

[0080] Example 4

[0081] like Fig.14 As shown, this embodiment provides a wiper device 1. In addition to the technical features of the above embodiment, this embodiment also includes the following technical features:

[0082] A plurality of connection holes are arranged on the coupling assembly 40, and telescopic rods 410 are arranged in each of the plurality of connection holes; a plurality of insertion holes 3021 are arranged on the output shaft assembly 30; wherein the telescopic rods 410 correspond one to one with the insertion holes 3021, the plurality of connection holes are evenly arranged in the circumferential direction of the coupling assembly 40, the plurality of insertion holes 3021 are evenly arranged in the circumferential direction of the positioning plate 302, and the length direction of the connection holes is parallel to the connection direction.

[0083] In this embodiment, the telescopic rods 410 are provided in multiple numbers, for example, two, which can ensure uniform force, and can ensure the reliability and stability when the telescopic rods 410 are connected to the positioning plate 302, and can further reduce the generation of noise.

[0084] Example 5

[0085] like Fig.14 As shown, this embodiment provides a wiper device 1. In addition to the technical features of the above embodiment, this embodiment also includes the following technical features:

[0086] The insertion hole 3021 is a long waist-shaped hole, and the length direction of the waist-shaped hole is arranged along the radial direction of the positioning plate 302 .

[0087] In this embodiment, the socket 3021 is a waist-shaped hole, which is wide in the middle and narrow at both ends, that is, the gap in the up and down directions is small. Therefore, it can avoid the positioning plate 302 from colliding with the rod body 403 and making abnormal noise during the back and forth rotation. In addition, it can also effectively adjust the left and right deviations of the motor drive shaft 502 and the main connecting shaft 303.

[0088] Example 6

[0089] like Fig.12 , Fig.13 , Fig.15 and Fig.18 As shown, this embodiment provides a wiper device 1. In addition to the technical features of the above embodiment, this embodiment also includes the following technical features:

[0090] The coupling assembly 40 includes: a first coupling portion 401, a first axial hole 4011, a second coupling portion 402 and a second axial hole 4021. The first coupling portion 401 is provided with a slide groove 4023 in the radial direction; the second coupling portion 402 is arranged in the slide groove 4023; the first axial hole 4011 is arranged at one end of the first coupling portion 401 close to the output shaft assembly 30; the second axial hole 4021 is arranged on the second coupling portion 402; wherein the first axial hole 4011 is used to cooperate with one end of the main connecting shaft 303 extending out of the positioning plate 302, the second axial hole 4021 is connected to the driving mechanism 50, and the telescopic rod 410 is arranged on the first coupling portion 401.

[0091] In this embodiment, continue to combine Fig.16 and Fig.17 As shown, the first coupling part 401 has a cylindrical structure, and the slide groove 4023 is radially arranged and passes through the outer circumferential surface of the first coupling part 401 and the end surface close to the driving structure 50. The second coupling part 402 is a block structure, which is arranged in the slide groove 4023 and can slide radially. The axial slot hole of the slide groove 4023 includes a large-diameter slot hole and a small-diameter slot hole. Correspondingly, the second coupling part 402 has a convex cross-section so that it will not fall off axially when inserted into the slide groove 4023. One end of the second coupling part 402 close to the outer circumferential surface of the first coupling part 401 can be connected to the first coupling part 401 through a pressure cover, so that the second coupling part 402 will not fall off radially. The first axial hole 4011 is used for the main connecting shaft 303 to extend into, and the second axial hole 4012 is used to connect the motor drive shaft 502. Among them, the second axial hole 4012 consists of two parts, such as Fig.19 and Fig. 20 As shown, the shaft hole connected to the motor drive shaft 502 is an elongated hole, and another part of the shaft hole is a circular hole, and the diameter of the circular hole is larger than the diameter of the elongated hole.

[0092] Example 7

[0093] like Fig.13 As shown, this embodiment provides a wiper device 1. In addition to the technical features of the above embodiment, this embodiment also includes the following technical features:

[0094] The wiper device further comprises: a radial adjustment mechanism 420 , which is connected to the second coupling portion 402 ; wherein the radial adjustment mechanism 420 is arranged along the length direction of the second shaft hole 4021 , and is suitable for adjusting the radial movement of the coupling assembly 40 .

[0095] In this embodiment, the second shaft hole 4021 is fixedly connected to the motor drive shaft 502, so that the motor drive shaft 502 drives the coupling assembly 40 to rotate. The radial adjustment mechanism 420 is arranged in the radial direction of the second coupling portion 402, and can adjust the radial movement of the coupling assembly 40, and can effectively control the radial clearance when the motor drive shaft 502 is combined with the second shaft hole 4021, so as to ensure the coaxiality of the motor drive shaft 502 and the main connecting shaft 303, and reduce wear and noise.

[0096] The radial adjustment mechanism 420 includes: a second elastic member 406, a first pressure cover 407, a third elastic member 408 and a second pressure cover 409, wherein the second elastic member 406 is arranged at one end of the second coupling portion 402; the first pressure cover 407 is fixedly connected to the first coupling portion 401; the third elastic member 408 is arranged at the other end of the second coupling portion 402; the second pressure cover 409 is fixedly connected to the first coupling portion 401; wherein the two ends of the second elastic member 406 respectively abut against the second coupling portion 402 and the first pressure cover 407, and the two ends of the third elastic member 408 respectively abut against the second coupling portion 402 and the second pressure cover 409.

[0097] In this embodiment, the second coupling part 402 is provided with radial blind holes 4022 on opposite sides, the second elastic member 406 and the third elastic member 408 extend into the blind holes 4022 respectively, one end of the second elastic member 406 abuts against one of the blind holes 4022, the other end of the second elastic member 406 is connected to the first gland 407, one end of the third elastic member 408 abuts against the other blind hole 4022, and the other end of the third elastic member 408 abuts against the second gland 409. The second elastic member 406 and the third elastic member 408 are respectively provided at the upper and lower ends in the radial direction, and the second elastic member 406 and the third elastic member 408 can be springs, etc., so that the radial movement of the radial coupling assembly 40 can be automatically adjusted.

[0098] Example 8

[0099] like Fig.11 As shown, this embodiment provides a wiper device 1. In addition to the technical features of the above embodiment, this embodiment also includes the following technical features:

[0100] The wiper device 1 also includes: a secondary connecting shaft 304, which is arranged on the positioning plate 301, and the secondary connecting shaft 304 faces the wiper arm 20 and extends out of the positioning plate 301; wherein the wiper arm 20 includes a first arm 201 and a second arm 202, the main connecting shaft 303 extends out of the positioning plate 301 at one end and is connected to the first arm 201, and the secondary connecting shaft 304 extends out of the positioning plate 301 at one end and is connected to the second arm 202.

[0101] In this embodiment, the positioning plate 301 is further provided with a second positioning hole 3012. For the same reason, the second positioning hole 3012 is also coaxially provided with a sleeve for passing the secondary connecting shaft 304. The double-arm wiper device 1 can be connected through the main connecting shaft 303 and the secondary connecting shaft 304, thereby improving applicability.

[0102] Example 9

[0103] like Figure 21 to Figure 24As shown, this embodiment provides a cab, comprising: a vehicle window 211 and a wiper device 1 in any embodiment; wherein, a wiper brush 10, a wiper arm 20 and an output shaft assembly 30 are arranged on the vehicle window 211, and a driving mechanism 50 and a coupling assembly 40 are arranged in the cab 21.

[0104] In this embodiment, a cab 21 is provided on the vehicle body, a window 211 is provided on the cab 21, an output shaft assembly 30, a scraper arm 20, and a scraper brush 10 are respectively installed on both sides of the windshield window 211 or a local sheet metal structure; a driving mechanism 50 and a coupling assembly 40 are installed on the main structure of the cab, which can reduce the weight of the window 211. In addition, since the cab in the invention includes the wiper device 1 in any embodiment, the cab in the present invention has all the beneficial effects of the wiper device in any embodiment.

[0105] Example 10

[0106] This embodiment provides a work vehicle, which may be a concrete pump truck, a vehicle-mounted pump, a fire truck, a crane, a reach loader and various road machinery, etc., including: a body and a cab, the body being connected to the cab; or a work vehicle including: a body and the wiper device 1 in any embodiment.

[0107] In this embodiment, the vehicle window 211 is arranged on the vehicle body, and the vehicle window 211 is opened or closed relative to the vehicle body; wherein, the scraper 10, the scraper arm 20 and the output shaft assembly 30 are arranged on the vehicle window 211, and the drive mechanism 50 and the coupling assembly 40 are arranged on the vehicle body inside the vehicle window 211. In addition, since the working vehicle in the present invention includes the wiper device 1 in any embodiment, the working vehicle in the present invention also has all the beneficial effects of the wiper device in any embodiment.

[0108] Specifically, in the wiper device 1 provided by the embodiment of the first aspect of the present invention, the output shaft of the output shaft assembly 30 is connected or disconnected with the coupling assembly 40. When the output shaft of the output shaft assembly 30 is disconnected from the coupling assembly 40, the wiper 10, the wiper arm 20 and the output shaft assembly 30 can be opened simultaneously with the vehicle window 211. When the vehicle window 211 is closed, the first coupling portion 401 rotates synchronously with the driving shaft of the driving mechanism 50, and the telescopic rod 410 rotates. When the position of the positioning disk 302 moves, the telescopic rod 410 contacts the positioning disk 302 and retracts into the first coupling portion 401. When the telescopic rod 410 rotates to a position relative to the socket 3021, it is inserted into the socket 3021 and connected to the positioning disk 302, so that the telescopic rod 410 drives the positioning disk 302 to rotate synchronously, and the main connecting shaft 303 rotates synchronously with the positioning disk 302 to cause the wiper arm 20 to rotate synchronously. The output shaft of the output shaft assembly 30 is connected to the coupling assembly 40 through the telescopic rod 410, and the driving mechanism 50 can drive the scraper arm 20 and the scraper brush 10 to clean the car window 211 normally. The coupling assembly 40 can not only make the connection between the driving mechanism 50 and the output shaft assembly 30 reliable, but also transmit torque reliably and quickly, the functionality of the wiper device 1 is stronger, and the stability of the use of the wiper device 1 is effectively improved. Further, the motor drive shaft 502 is coaxially arranged with the main connecting shaft 303 of the output shaft assembly 30. The motor drive shaft 502 is connected to the motor body 501, and is coaxially arranged with the main connecting shaft 303 of the output shaft assembly 30 through the coupling assembly 40, so as to ensure the efficiency of the motor body 501 driving the output shaft assembly 30 to move, and reduce the output energy consumption. It is worth noting that the motor body 501 is provided with a motor harness, and the motor body 501 is arranged in the vehicle body. The motor harness is connected to the vehicle harness inside the vehicle body, is not exposed, and does not require a transition connection of the middle door electrode, which effectively improves the appearance grade and reduces the cost.

[0109] The structural form of the scraper arm 20 is not limited, and can be a single-arm structure or a double-arm structure, depending on the user's usage requirements.

[0110] In summary, the beneficial effects of the embodiments of the present invention are:

[0111] 1. The output shaft of the driving mechanism 50 can be connected or separated with the main connecting shaft 303 through the coupling assembly 40. When separated, the scraper arm 20 and the scraper brush 10 can be opened with the glass window, and the motor body and the coupling assembly 40 can be installed on the vehicle body. Only the scraper arm 20, the scraper brush 10 and the output shaft assembly 30 are located on the glass or the sheet metal structure of the glass part, which can effectively reduce the weight of the glass window.

[0112] 2. Through the design of the elastic parts and corresponding hole sizes of the coupling assembly 40 in both the axial and radial directions, the motor drive shaft 502 and the main connecting shaft 303 can be automatically adjusted to always be coaxial, and the clearance during the connection can be effectively controlled to reduce wear and noise.

[0113] 3. The coupling assembly 40 and the output shaft assembly 30 are connected by two or more telescopic rods 410, and the force is evenly distributed and the mechanism has good stability.

[0114] The present invention connects the coupling assembly 40 and the output shaft assembly 30 via the telescopic rod 410, which can ensure the connection between the output shaft assembly 30 and the coupling assembly 40, which can not only improve the reliability of the connection between the driving mechanism 50 and the output shaft assembly 30, but also quickly transmit torque, and effectively improve the versatility and stability of the wiper device 1.

[0115] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0116] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front” and “back” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0117] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0118] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wiper device, characterized in that: include: scraper brush; A scraper arm, one end of which is connected to the scraper brush; An output shaft assembly, one end of which is connected to an end of the scraper arm away from the scraper brush; Coupling assembly; A driving mechanism connected to the coupling assembly; A telescopic rod, which is arranged on the output shaft assembly or the coupling assembly and can be extended and retracted along the connection direction of the output shaft assembly and the coupling assembly, and the telescopic rod has an alignment function and is used to realize the connection between the coupling assembly and the output shaft assembly; Wherein, the telescopic rod comprises: Rod body; A first elastic member is disposed in the coupling assembly, one end of the first elastic member is connected to the coupling assembly, and the other end is connected to the rod body, and the first elastic member is used to drive one end of the rod body close to the output shaft assembly to extend out of the coupling assembly; The output shaft assembly is provided with a plug hole for mating with one end of the rod body extending out of the coupling assembly; Wherein, the output shaft assembly comprises: Positioning plate; A positioning disc, spaced apart from the positioning plate; A main connecting shaft, passing through the positioning plate and the positioning disc; One end of the main connecting shaft extending out of the positioning plate is connected to the scraper arm, one end of the main connecting shaft extending out of the positioning plate extends into the coupling assembly, and the jack is provided on the positioning plate; Wherein, the coupling assembly comprises: The first coupling part is provided with a sliding groove along the radial direction; A second coupling portion is disposed in the slide groove; A first shaft hole, provided at one end of the first coupling portion close to the output shaft assembly; A second shaft hole, provided on the second coupling shaft portion; The first shaft hole is used to cooperate with one end of the main connecting shaft extending out of the positioning plate, the second shaft hole is connected to the driving mechanism, and the telescopic rod is arranged on the first coupling part; Wherein, the second coupling portion is provided with a radial adjustment mechanism, and the radial adjustment mechanism comprises: A second elastic member, provided at one end of the second coupling portion; A first gland, fixedly connected to the first coupling portion; a third elastic member, provided at the other end of the second coupling portion; A second gland, fixedly connected to the first coupling portion; Two ends of the second elastic member abut against the second coupling portion and the first pressure cover respectively, and two ends of the third elastic member abut against the second coupling portion and the second pressure cover respectively; Among them, it also includes: A secondary connecting shaft, disposed on the positioning plate, the secondary connecting shaft extends out of the positioning plate and is connected to the scraper arm; The scraper arm includes a first arm and a second arm. One end of the main connecting shaft extends out of the positioning plate and is connected to the first arm. One end of the secondary connecting shaft extends out of the positioning plate and is connected to the second arm.

2. The wiper device according to claim 1, characterized in that: The coupling assembly is provided with a plurality of connection holes, and a telescopic rod is provided in each of the plurality of connection holes; The output shaft assembly is provided with a plurality of the jacks; Among them, the telescopic rods correspond to the sockets one by one, the multiple connecting holes are evenly arranged along the circumferential direction of the coupling assembly, the multiple sockets are evenly arranged along the circumferential direction of the positioning plate, and the length direction of the connecting holes is parallel to the connecting direction.

3. The wiper device according to claim 1, characterized in that: The insertion hole is a long waist-shaped hole, and the length direction of the waist-shaped hole is arranged along the radial direction of the positioning plate.

4. A cab, characterized in that: include: Car windows; The wiper device according to any one of claims 1 to 3; Wherein, the scraper brush, the scraper arm and the output shaft assembly are arranged on the vehicle window, and the driving mechanism and the coupling assembly are arranged in the driving cab.

5. A working vehicle, characterized in that: include: Vehicle body; The cab as claimed in claim 4, wherein the vehicle body is connected to the cab; or The wiper device according to any one of claims 1 to 3.

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