WO2021237965A1

WO2021237965A1 - Wiper device, cab, and operating vehicle

Info

Publication number: WO2021237965A1
Application number: PCT/CN2020/112104
Authority: WO
Inventors: 张珂; 吴彩庭; 徐建辉
Original assignee: 三一汽车制造有限公司
Priority date: 2020-05-28
Filing date: 2020-08-28
Publication date: 2021-12-02
Also published as: CN111559345A

Abstract

The present application provides a wiper device, a cab, and an operating vehicle. The wiper device comprises: a wiper brush; a wiper arm, one end being connected to the wiper brush; an output assembly, one end being connected to the end of the wiper arm away from the wiper brush; a coupling assembly; a driving mechanism connected to the coupling assembly; and a stretchable rod disposed on the output shaft assembly or the coupling assembly and used for achieving the connection between the coupling assembly and the output shaft assembly, the stretchable rod being capable of stretching and retracting in the direction of connection between the output shaft assembly and the coupling assembly. According to the present application, connecting the coupling assembly and the output shaft assembly by means of the stretchable rod can ensure that the connection between the output shaft assembly and the coupling assembly can not only improve the reliability of connection between the driving mechanism and the output shaft assembly and achieve quick torque transfer, but also effectively improve the versatility and stability of use of the wiper device

Description

Wiper device, cab and work vehicle

This application claims the priority of a Chinese patent application filed with the State Intellectual Property Office of China with the application number "202010470984.5" and the invention title "wiper device, cab and operating vehicle" on May 28, 2020. The entire content of the application is approved The reference is incorporated in this application.

Technical field

This application relates to the technical field of construction machinery, and in particular to a wiper device, a cab and a work vehicle.

Background technique

At present, the conventional form of wiper blades for automobiles or work vehicles is a wiper and wiper arm outside the glass window, and 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. , But in special circumstances (such as the driver using the window to escape), the output shaft of the scraper arm needs to be disconnected from the drive motor in order to quickly open the window.

Summary of the invention

This application aims to solve at least one of the technical problems existing in the prior art or related technologies.

For this reason, the first aspect of this application proposes a wiper device.

The second aspect of the application proposes a cab.

The third aspect of the application proposes a work vehicle.

In view of this, the first aspect of the present application proposes 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 the end of the wiper arm away from the wiper, and a drive mechanism, Connected to the coupling assembly; the telescopic rod is set 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. The telescopic rod can be connected to the coupling assembly along the output shaft assembly The direction stretches.

By providing a coupling assembly between the driving mechanism and the output shaft assembly, the coupling assembly is connected with the output shaft assembly through a telescopic rod to drive the output shaft assembly to rotate, and the output shaft assembly rotates to drive the wiper arm to rotate, so that the wiper arm The wiper is driven to realize the wiper function. Specifically, when the wiper device is used for a car window, after the window is opened, the output shaft assembly and the coupling assembly are separated from each other, and when the window is to be closed, in order to be able to close the window, the output shaft assembly and The coupling assembly is 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 refers specifically to the connection direction when the output shaft assembly and the coupling assembly can be accurately connected. The direction can be the axial direction of the coupling assembly, or the direction deviating from the axial direction. When the output shaft assembly and the coupling assembly are misaligned, it is difficult to connect the output shaft assembly and the coupling assembly. Set the telescopic rod 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 has a aligning function because it can expand and contract in the connecting direction. , Thereby ensuring the combination of the output shaft assembly and the coupling assembly.

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 makes the connection between the drive mechanism and the output shaft assembly reliable, but also transmits the torque reliably and quickly, which effectively improves the versatility of the wiper device. , And improve the stability of the wiper device.

According to the above-mentioned wiper device of this application, it may also have the following additional technical features:

In a possible design, the telescopic rod includes: a rod body; a first elastic member 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, the first elastic member The end close to the output shaft assembly for driving the rod body extends out of the coupling assembly; wherein a jack is provided on the output shaft assembly for mating with the end of the rod body that extends out of the coupling assembly.

The telescopic rod is arranged on the coupling assembly, so that the rod body extends out of the end of the coupling assembly close to the end of 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. Disconnect from the output shaft assembly. Specifically, when the output shaft assembly and the coupling assembly are about 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 time due to its elasticity, which not only ensures that the window is closed tightly. , And when the coupling assembly reaches the position of the jack during the process of driving the telescopic rod to rotate, the rod body can be inserted into the jack to connect the output shaft assembly with the coupling assembly. Therefore, the mutual cooperation of the telescopic rod and the socket can ensure that the output shaft assembly can be combined with the coupling assembly again after being disconnected. At least a part of the coupling assembly body is provided with one or more than two connecting holes. For example, a first connecting hole and a second connecting hole may be provided radially symmetrically, and the first connecting hole and the second connecting hole are both axially. 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 a telescopic rod as an example, the first elastic member can be a spring, etc., the first elastic member is arranged in the first connecting hole, one end of the first elastic member is connected to the end cover, and the end cover is used to At least a part of the body is connected, for example, can be connected by fasteners such as screws, which can prevent the telescopic rod from escaping from the first connection hole. The other end of the first elastic member is connected with the rod body. Specifically, the rod body includes a large-diameter part and a small-diameter part with unequal diameters, wherein a hole is opened in the large-diameter part, and the first elastic member extends into the hole to be connected to the large-diameter part. The small diameter part can be extended into the socket and can be used to connect the output shaft assembly. A step is formed between the large-diameter part and the small-diameter part, 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 aligned with the socket and inserted, because the telescopic rod has the function of axial expansion, the end of the telescopic rod will be retracted into the body of the coupling assembly, and once the telescopic rod is rotated to align with the socket The correct position, the telescopic rod pops out and connects with the output shaft assembly. 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, the only way to disconnect the output shaft assembly is to separate the jack from the rod body of the telescopic rod. The structure is simple and easy to implement.

In a possible design, the output shaft assembly includes: a positioning plate; a positioning plate, which is coaxial with the positioning plate and spaced apart from each other; the main connecting shaft penetrates the positioning plate and the positioning plate; wherein the main connecting shaft extends out of the positioning plate One end is connected with the scraper arm, one end of the main connecting shaft protruding from the positioning plate extends into the coupling assembly, and the jack is arranged on the positioning plate.

The positioning plate is provided with a first positioning hole 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 easy to be too thick, a shaft sleeve is respectively provided on the two sides of the positioning plate, and the two shaft sleeves are arranged coaxially with the first positioning hole to support and support the main connecting shaft. It further restricts the position, and can ensure that the axial position of the main connecting shaft is stable without radial movement, thereby ensuring the reliability of the connection between the main connecting shaft and the scraper arm, and further avoiding noise. The jack is arranged on the positioning plate, and the positioning plate and the positioning plate are arranged at intervals, which takes into account that the rod body can avoid collision with the positioning plate and generate noise after being inserted into the jack, and avoid the possibility of wear due to collision. The end of the main connecting shaft that extends out of the positioning plate extends into the coupling assembly, which acts as a guide when the output shaft assembly and the coupling assembly are connected through the telescopic rod, which is more conducive to the connection of the telescopic rod and the positioning plate. In addition, the disk surface of the positioning plate facing the coupling assembly can better locate the telescopic rod, so as to further ensure that the telescopic rod can be connected to the positioning plate more quickly.

In a possible design, multiple connecting holes are provided on the coupling assembly, and telescopic rods are provided in the multiple connecting holes; multiple jacks are provided on the output shaft assembly; wherein, the telescopic rods and jacks are one by one. Correspondingly, 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 disk, and the length direction of the connecting holes is parallel to the connecting direction.

There are multiple telescopic rods, for example, it can be set to two, so that the force can be evenly received, the reliability and stability of the connection between the telescopic rod and the positioning plate can be ensured, and the generation of noise can be further reduced.

In a possible design, the insertion hole is a long waist-shaped hole, and the length of the waist-shaped hole is arranged along the radial direction of the positioning disk.

The jack is a waist-shaped hole with small clearance in the vertical direction, which can avoid abnormal noise caused by collision with the rod body during the back and forth rotation of the positioning plate. In addition, it can effectively adjust the left and right deviation between the motor drive shaft and the main connecting shaft.

In a possible design, the coupling assembly includes: a first coupling part with a sliding groove along the radial direction; a second coupling part arranged in the sliding groove; a first shaft hole arranged in the first coupling The shaft part is close to one end of the output shaft assembly; the second shaft hole is provided on the second coupling part; wherein, the first shaft hole is used to cooperate with the end of the main connecting shaft protruding from the positioning plate, and the second shaft hole is connected to the driving mechanism Connected, the telescopic rod is arranged on the first coupling part.

The first coupling part has a cylindrical structure, and the sliding grooves are arranged radially and penetrate 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 sliding groove and can slide radially. The axial slot of the sliding slot includes a large-diameter slot and a small-diameter slot. Correspondingly, the second coupling part has a convex cross-section so as not to axially fall off when inserted into the sliding slot. 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 gland, so that the second coupling part will not fall off in the radial direction. The first shaft hole is used for the main connecting shaft to extend in, and the second shaft hole is used for connecting the motor drive shaft.

In a possible design, the second coupling portion is provided with a radial adjustment mechanism, and the radial adjustment mechanism includes: a second elastic member disposed at one end of the second coupling portion; The shaft portion is fixedly connected; the third elastic member is arranged at the other end of the second coupling portion; the second gland is fixedly connected to the first coupling portion; wherein the two ends of the second elastic member respectively abut against the second coupling The shaft part and the first pressing cover, and the two ends of the third elastic member respectively abut against the second coupling part and the second pressing cover.

The second coupling part is provided with radial blind holes on opposite sides. The second elastic member and the third elastic member respectively extend into the blind holes. One end of the second elastic member abuts against one of the blind holes. The other ends of the two elastic pieces are connected with the first pressing cover, one end of the third elastic piece is in contact with the other blind hole, and the other end of the third elastic piece is in contact with the second pressing cover. The second elastic member and the third elastic member are respectively arranged at the upper and lower ends in the radial direction. 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.

In a possible design, the wiper device further includes: a secondary connecting shaft arranged on the positioning plate, the secondary connecting shaft extends out of the positioning plate and is connected with the wiper arm; wherein the wiper arm includes a first arm and a second arm, One end of the main connecting shaft protruding from the positioning plate is connected to the first arm, and one end of the auxiliary connecting shaft protruding from the positioning plate is connected to the second arm.

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

The second aspect of the present application proposes a cab, including: a vehicle window and a wiper device of any design of the first aspect; wherein the wiper, the wiper arm and the output shaft assembly are arranged on the vehicle window, and the driving mechanism and the coupling The axle assembly is arranged in the cab.

The cab provided by the present application includes the wiper device designed as in any one of the first aspect, so it has all the beneficial effects of the wiper device designed in any one of the first aspect, and will not be repeated here.

The third aspect of the present application proposes a work vehicle, including: a vehicle body; a cab, where the vehicle body is connected to the cab; or the wiper device of any design in the first aspect.

The window is set on the cab, and the window is opened or closed relative to the cab; the wiper, scraper arm and output shaft assembly are set on the window, and the drive mechanism and coupling assembly are set on the vehicle body inside the window, and the output The shaft assembly, the wiper arm and the wiper 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 cab provided by the present application includes the wiper device designed in any one of the first aspect, it has all the beneficial effects of the wiper device designed in any one of the first aspect, and will not be repeated here. .

The additional aspects and advantages of the present application will become apparent in the following description, or be understood through the practice of the present application.

Description of the drawings

The above and/or additional aspects and advantages of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

Figure 1 is one of the schematic diagrams of the wiper structure in the related technology of the present application;

Figure 2 is the second schematic diagram of the wiper structure in the related technology of the present application;

FIG. 3 is one of the schematic diagrams of opening the rear window assembly in the related technology of the present application;

4 is the second schematic diagram of opening the rear window assembly in the related technology of the present application;

FIG. 5 is one of the schematic diagrams of the automobile wiper motor in the related technology of the present application;

FIG. 6 is the second schematic diagram of the automobile wiper motor in the related technology of the present application;

FIG. 7 is one of the schematic diagrams of the wiper device and the camera in the related technology of the present application;

FIG. 8 is the second schematic diagram of the wiper device and the camera in the related technology of the present application;

FIG. 9 is one of the three-dimensional schematic diagrams of the wiper device in some embodiments of the present application;

FIG. 10 is the second schematic diagram of the three-dimensional structure of the wiper device in some embodiments of the present application;

Figure 11 is an exploded schematic diagram of the wiper device in some embodiments of the present application;

Figure 12 is an exploded schematic diagram of the coupling assembly of the wiper device in some embodiments of the present application;

13 is a schematic diagram of an exploded structure of the coupling assembly of the wiper device in some embodiments of the present application;

14 is an exploded schematic diagram of the output shaft assembly of the wiper device in some embodiments of the present application;

15 is a schematic front view of the structure of the first coupling part of the wiper device in some embodiments of the present application;

Fig. 16 is a schematic sectional view of the structure taken along the line A-A in Fig. 15;

Fig. 17 is a schematic sectional view of the structure taken along the line B-B in Fig. 15;

18 is a schematic front view of the structure of the second coupling part of the wiper device in some embodiments of the present application;

Fig. 19 is a schematic cross-sectional view of the structure taken along the line C-C in Fig. 18;

Figure 20 is a schematic cross-sectional view taken along the line D-D in Figure 18;

FIG. 21 is one of the three-dimensional schematic diagrams of a working vehicle according to an embodiment of the present application;

FIG. 22 is a second schematic diagram of the three-dimensional structure of a working vehicle according to an embodiment of the present application;

FIG. 23 is the third three-dimensional structural diagram of a working vehicle according to an embodiment of the present application;

FIG. 24 is a fourth schematic diagram of the three-dimensional structure of a work vehicle according to an embodiment of the present application.

Among them, the corresponding relationship between the reference signs and component names in Figures 1 to 8 is:

100': wiper structure, 200': open the rear window assembly, 300': car wiper motor, 400': wiper device and camera.

Among them, the corresponding relationship between the reference signs and component names in Figures 9 to 24 is:

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: jack, 303: main connecting shaft, 304: secondary connecting shaft, 305: bushing, 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: sliding groove, 403: rod body, 404: first elasticity Piece, 405: end cover, 406: second elastic piece, 407: first gland, 408: third elastic piece, 409: second gland, 410: telescopic rod, 420: radial adjustment mechanism, 50: drive Mechanism, 501: motor body, 502: motor drive shaft, 21: cab, 211: car window.

Detailed ways

In order to be able to understand the above objectives, features and advantages of the application more clearly, the application will be further described in detail below with reference to the accompanying drawings and specific implementations. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other if there is no conflict.

In the following description, many specific details are set forth in order to fully understand this application. However, this application can also be implemented in other ways different from those described here. Therefore, the scope of protection of this application is not subject to the specific details disclosed below. Limitations of the embodiment.

In related technologies, at present, the main composition forms of wipers for automobiles or construction vehicles are: the conventional linkage mechanism with external wiper, that is, the linkage mechanism (external) is connected with the output shaft as a whole, and the motor power range is wide. It can be selected according to the length of the glass and the wiper arm, but the appearance is large and heavy; (2) The conventional linkage mechanism has a built-in wiper, that is, the linkage mechanism (built into the motor structure) is connected to the output shaft as a whole. The power of the motor is usually small, which is suitable for the small size of the scraper arm and small installation space, or to fix the motor 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) Link mechanism and The output shaft can be separated and combined. It is suitable for situations where the glass needs to be opened, the scraper arm is longer, the motor is heavy, and the wiring harness is hidden in the car. The motor connecting rod can be built-in or external.

Specifically, as shown in Figures 1 and 2, a wiper structure 100' for cranes, especially mobile or crawler cranes, is disclosed, which includes wiper motors, linkages, output shafts, and arcs. Hole connecting plate (located on the car body), scraper arm scraper, spring and pin (located on the glass), the motor output shaft drives the connecting plate to rotate at a certain angle, and the scraper pin is combined 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 will collide with the connecting plate when changing the left and right directions, which is noisy and easy to wear.

As shown in Figures 3 and 4, a rear window assembly 200' for the trunk door of a motor vehicle is disclosed, which includes a wiper motor and an output shaft (located on the vehicle body), and a wiper arm (located on the glass ), the motor output shaft can be combined with or separated from the wiper drive shaft. Opening the rear window assembly 200' only describes that the motor output shaft and the scraper arm shaft can be combined and separated, there is no specific structure, and no consideration of how to achieve the combination in the case of deviation.

As shown in Figures 5 and 6, an automobile wiper motor 300' is disclosed, which includes a motor and a gearbox. The gearbox includes a box, a turbine, and a worm. The worm is connected to the output shaft of the motor through a coupling. The end is fixed to keep the worm and the turbine in a good meshing state, reduce wear, reduce noise, and increase service life. The car wiper motor 300' connects the worm inside the motor and the motor shaft through a coupling, and they are in a meshing state, and there is no separate working state.

As shown in Figures 7 and 8, a wiper device and a camera 400' are disclosed, including a wiper mechanism, a motor, and a controller that controls the rotation of the motor. The left and right sides of the column connected with the motor output shaft are respectively provided with limit posts , When the column is in contact with the limit column, the controller controls the motor to change the direction of rotation without the use of transmission gears, limit detection photocouplers, light barriers and other components. The structure is simple; the output shaft of the motor is connected to the column and the rain through the coupling. The wiper shaft of the wiper mechanism is connected. The wiper device and the camera 400' connect the motor shaft and the output shaft, and the output shaft and the column through a coupling, and they are in a meshing state, and there is no separate working state.

Hereinafter, the wiper device 1, the cab 21, and the work vehicle of some embodiments of the present application will be described with reference to FIGS. 9 to 24.

Example 1

As shown in Figures 9 to 11, the wiper device 1 provided by the embodiment of the first aspect of the present application includes: a wiper 10, a wiper arm 20, an output shaft assembly 30, a coupling assembly 40, a telescopic rod 410, and a drive Mechanism 50, one end of the scraper arm 20 is connected to the scraper 10, one end of the output shaft assembly 30 is connected to the end of the scraper arm 20 away from the scraper 10, and the drive mechanism 50 is connected to the coupling assembly 40; the telescopic rod 410 is located on the output shaft The assembly 30 or the coupling assembly 40 is used to realize the connection between the coupling assembly 40 and the output shaft assembly 30, and the telescopic rod 410 can extend and contract along the connection direction of the output shaft assembly 30 and the coupling assembly 40.

In the wiper device 1 provided by the embodiment of the first aspect of the present application, the drive mechanism 50 includes a motor body 501 and a motor drive shaft 502 connected to the motor body 501, and the motor drive shaft 502 is connected to the output shaft assembly 30 through a coupling assembly 40 , As shown in Figure 11.

By providing a coupling assembly 40 between the drive mechanism 50 and the output shaft assembly 30, the coupling assembly 40 is connected to the output shaft assembly 30 through a telescopic rod 410 to drive the output shaft assembly 30 to rotate, and the output shaft assembly 30 rotates to thereby The wiper arm 20 is driven to rotate, so that the wiper arm 20 drives the wiper 10 to achieve the wiper function. Specifically, when the wiper device 1 is used for a car window, after the window is opened, the output shaft assembly 30 and the coupling assembly 40 are separated from each other, and when the window is to be closed, in order to be able to close the window, the output needs to be The shaft assembly 30 and the coupling assembly 40 are connected again. At this time, the output shaft assembly 30 and the coupling assembly 40 may have been misaligned in the connecting direction. The connecting direction refers specifically to the output shaft assembly 30 and the coupling assembly 40. The connection direction when it can be accurately connected, the connection direction can be the axial direction of the coupling assembly, or the direction deviating from the axial direction. When 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 is in the connecting direction. It can be extended and contracted and has a aligning function, thereby ensuring the combination of the output shaft assembly 30 and the coupling assembly 40.

When the telescopic rod 410 is disconnected from the output shaft assembly 30, the coupling assembly 40 and the driving 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 from the output shaft of the output shaft assembly 30, which not only makes the connection between the driving mechanism 50 and the output shaft assembly 30 reliable, but also transmits the torque reliably and quickly, which effectively improves the wiper device 1 The versatility of use, and the use stability of the wiper device 1 is improved.

Example 2

As shown in FIG. 12 and FIG. 14, this embodiment provides a wiper device 1. In addition to the technical features of the foregoing embodiment, this embodiment also includes the following technical features:

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 extending the coupling assembly with the rod body 403 One end of the assembly 40 is mated.

In this embodiment, the telescopic rod 410 is arranged on the coupling assembly 40, so that the rod body 403 extends out of the end of the coupling assembly 40 near one end of the output shaft assembly 30, and is used to extend into the jack 3021 to connect the output The 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 about 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. It can not only ensure that the window is closed, but also when the coupling assembly 40 reaches the position of the jack 3021 during the rotation of the telescopic rod 410, the rod body 403 can be inserted into the jack 3021 to make the output shaft assembly 30 and the coupling The assembly 40 is connected. Therefore, the mutual cooperation of the telescopic rod 410 and the insertion hole 3021 can ensure that the output shaft assembly 30 can be combined with the coupling assembly 40 again after being disconnected. At least a part of the coupling assembly 40 is provided with one or more than two connecting holes. For example, a first connecting hole 4012 and a second connecting hole 4013 may be provided radially symmetrically, and the first connecting hole 4012 and the second connecting hole 4012 The connecting holes 4013 are all arranged axially, 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 a telescopic rod 410 as an example, the first elastic member 404 can be a spring or the like. 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 for For connection with at least a part of the body of the coupling assembly 40, for example, the connection can be made by fasteners such as screws, which can prevent the telescopic rod 410 from escaping from the first connection hole 4012. The other end of the first elastic member 404 is connected with the rod body 403. Specifically, the rod body 403 includes a large-diameter part and a small-diameter part with unequal diameters, wherein a hole is opened in the large-diameter part, and the first elastic member 404 extends into the hole to be connected to the large-diameter part. The small diameter part can extend into the socket 3021 and can be used to connect the output shaft assembly 30. A step is formed between the large-diameter part and the small-diameter part, 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 aligned with the insertion hole 3021 and inserted, since the telescopic rod 410 has the function of axial expansion and contraction, the end of the telescopic rod 410 will be retracted into the body of the coupling assembly 40, and once the telescopic rod 410 is retracted into the body of the coupling assembly 40, When rotated to a position aligned with the jack 3021, the telescopic rod 410 is ejected and connected to the output shaft assembly 30. 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, only the output shaft assembly 30 is disengaged and the jack 3021 is disengaged from the rod body 403 of the telescopic rod 410. The structure is simple and easy to implement.

Example 3

As shown in FIG. 14, this embodiment provides a wiper device 1. In addition to the technical features of the foregoing embodiment, this embodiment also includes the following technical features:

The output shaft assembly 30 includes: a positioning plate 301, a positioning plate 302, and a main connecting shaft 303. The positioning plate 302 is coaxial with the positioning plate 301 and spaced apart from each other; the main connecting shaft 303 penetrates the positioning plate 301 and the positioning plate 302; One end of the shaft 303 protruding from the positioning plate 301 is connected to the scraper arm 20, one end of the main connecting shaft 303 protruding from the positioning plate 302 extends into the coupling assembly 40, and the insertion hole 3021 is provided on the positioning plate 302.

In this embodiment, the positioning plate 301 is provided with a first positioning hole 3011 for the main connecting shaft 303 to extend out of the positioning plate 301 after passing through. Considering that the thickness of the positioning plate 301 is not easy to be too thick, a shaft sleeve 305 is respectively provided on the two sides of the positioning plate 301, and the two shaft sleeves 305 are coaxially arranged with the first positioning hole 3011 to connect to the main The shaft 303 plays the role of supporting and further limiting, and can ensure that the axial position of the main connecting shaft 303 is stable without radial movement, thereby ensuring the reliability of the connection between the main connecting shaft 303 and the scraper arm 20, and Can further avoid noise. The jack 3021 is provided on the positioning plate 302, and the positioning plate 302 and the positioning plate 301 are spaced apart from each other. It is considered that the rod 403 can be inserted into the jack 3021 to avoid collisions with the positioning plate 301 and generate noise, and avoid collisions. The possibility of wear. One end of the main connecting shaft 303 that protrudes from the positioning plate 302 extends into the coupling assembly 40, which serves as a guide when the output shaft assembly 30 and the coupling assembly 40 are connected by the telescopic rod 410, which is more conducive to the telescopic rod 410 and the coupling assembly 40. Locating the connection of the disk 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.

Example 4

A plurality of connecting holes are provided on the coupling assembly 40, and a telescopic rod 410 is provided in the plurality of connecting holes; a plurality of jacks 3021 are provided on the output shaft assembly 30; wherein, the telescopic rod 410 corresponds to the jack 3021 one by one, A plurality of connecting holes are uniformly arranged along the circumferential direction of the coupling assembly 40, and a plurality of insertion holes 3021 are uniformly arranged along the circumferential direction of the positioning plate 302, and the length direction of the connecting holes is parallel to the connecting direction.

In this embodiment, there are multiple telescopic rods 410, such as two, which can ensure uniform force, and can ensure the reliability and stability of the connection between the telescopic rod 410 and the positioning plate 302, and can further reduce noise. The production.

Example 5

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 disk 302.

In this embodiment, the receptacle 3021 is a waist-shaped hole, which has the characteristics of wide center and narrow ends, that is, the gap in the vertical direction is small. Therefore, it can prevent the positioning plate 302 from colliding with the rod body 403 and making abnormal noise during the back and forth rotation of the positioning plate 302. In addition, The left-right deviation between the motor drive shaft 502 and the main connecting shaft 303 can also be effectively adjusted.

Example 6

As shown in FIG. 12, FIG. 13, FIG. 15 and FIG. 18, this embodiment provides a wiper device 1. In addition to the technical features of the foregoing embodiment, this embodiment also includes the following technical features:

The coupling assembly 40 includes: a first coupling portion 401, a first shaft hole 4011, a second coupling portion 402, and a second shaft hole 4021. The first coupling portion 401 is provided with a sliding groove 4023 along the radial direction; The second coupling part 402 is provided in the sliding groove 4023; the first shaft hole 4011 is provided at one end of the first coupling part 401 close to the output shaft assembly 30; the second shaft hole 4021 is provided on the second coupling part 402; Among them, the first shaft hole 4011 is used to fit with the end of the main connecting shaft 303 protruding from the positioning plate 302, the second shaft hole 4021 is connected with the driving mechanism 50, and the telescopic rod 410 is provided on the first coupling portion 401.

In this embodiment, as shown in FIGS. 16 and 17, the first coupling portion 401 has a cylindrical structure, and the sliding groove 4023 is arranged radially and penetrates to the outer circumferential surface of the first coupling portion 401 and close to the driving structure The end face of 50. The second coupling portion 402 is a block-shaped structure, which is arranged in the sliding groove 4023 and can slide radially. The axial slot of the sliding slot 4023 includes a large-diameter slot and a small-diameter slot. Correspondingly, the second coupling portion 402 has a convex cross-section so that it will not fall off axially when inserted into the sliding slot 4023. One end of the second coupling portion 402 close to the outer circumferential surface of the first coupling portion 401 can be connected to the first coupling portion 401 through a gland, so that the second coupling portion 402 will not fall off in the radial direction. The first shaft hole 4011 is used for the main connecting shaft 303 to extend in, and the second shaft hole 4021 is used for connecting the motor drive shaft 502. Among them, the second shaft hole 4021 has two parts, as shown in Figure 19 and Figure 20, the shaft hole connected with the motor drive shaft 502 is a long strip hole, the other part of the shaft hole is a round hole, the diameter of the round hole is larger than the long The diameter of the strip hole.

Example 7

As shown in FIG. 13, this embodiment provides a wiper device 1. In addition to the technical features of the foregoing embodiment, this embodiment also includes the following technical features:

The wiper device 1 further includes 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 of the second shaft hole 4021 and is suitable for adjusting Radial movement of the coupling assembly 40.

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, 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, In order to ensure the coaxiality of the motor drive shaft 502 and the main connecting shaft 303, wear and noise are reduced.

The radial adjustment mechanism 420 includes: a second elastic member 406, a first pressing cover 407, a third elastic member 408, and a second pressing cover 409. The second elastic member 406 is provided at one end of the second coupling portion 402; The cover 407 is fixedly connected to the first coupling part 401; the third elastic member 408 is arranged at the other end of the second coupling part 402; the second pressing cover 409 is fixedly connected to the first coupling part 401; Two ends of the elastic member 406 abut against the second coupling portion 402 and the first pressing cover 407 respectively, and both ends of the third elastic member 408 abut against the second coupling portion 402 and the second pressing cover 409 respectively.

In this embodiment, the second coupling portion 402 is provided with radial blind holes 4022 on opposite sides, respectively, the second elastic member 406 and the third elastic member 408 respectively extend into the blind holes 4022, and the second elastic member 406 One end of the second elastic member 406 is in contact with 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 is in contact with the other blind hole 4022, and the other end of the third elastic member 408 is in contact with the other blind hole 4022. One end abuts against the second pressing cover 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. The second elastic member 406 and the third elastic member 408 can be springs, etc., so that the diameter of the radial coupling assembly 40 can be automatically adjusted. To move.

Example 8

As shown in FIG. 11, this embodiment provides a wiper device 1. In addition to the technical features of the foregoing embodiment, this embodiment also includes the following technical features:

The wiper device 1 further includes: a secondary connecting shaft 304, the secondary connecting shaft 304 is provided on the positioning plate 301, 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 first arm 201 For the second arm 202, one end of the main connecting shaft 303 extending out of the positioning plate 301 is connected to the first arm 201, and one end of the auxiliary connecting shaft 304 extending out of the positioning plate 301 is connected to the second arm 202.

In this embodiment, the positioning plate 301 is also provided with a second positioning hole 3012. For the same reason, the second positioning hole 3012 is also provided with a shaft sleeve coaxially for the auxiliary connecting shaft 304 to pass through. The dual-arm wiper device 1 can be connected through the main connecting shaft 303 and the auxiliary connecting shaft 304, which improves the applicability.

Example 9

As shown in Figures 21 to 24, this embodiment provides a cab 21, including: a window 211 and the wiper device 1 in any embodiment; wherein the wiper 10, the wiper arm 20, and the output shaft assembly 30 is provided on the vehicle window 211, and the driving mechanism 50 and the coupling assembly 40 are provided in the cab 21.

In this embodiment, a cab 21 is provided on the vehicle body, a window 211 is provided on the cab 21, and the output shaft assembly 30, the wiper arm 20, and the wiper 10 are installed on the windshield window 211 or partial sheet metal structure The drive mechanism 50 and the 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 21 in the present application includes the wiper device 1 in any embodiment, the cab 21 in the present application has all the beneficial effects of the wiper device in any embodiment.

Example 10

This embodiment provides a working vehicle, which can be a concrete pump truck, a vehicle-mounted pump, a fire truck, a crane, a reach stacker, and various road machinery, etc., including: a vehicle body and a cab 21, and the vehicle body is connected to the cab 21; Or the work vehicle includes: a vehicle body and the wiper device 1 in any embodiment.

In this embodiment, the vehicle window 211 is provided on the vehicle body, and the vehicle window 211 is opened or closed relative to the vehicle body; wherein the wiper 10, the wiper arm 20 and the output shaft assembly 30 are provided on the vehicle window 211, and the drive mechanism 50 is connected to the vehicle body. The axle assembly 40 is installed on the vehicle body in the vehicle window 211. In addition, since the work vehicle in the present application includes the wiper device 1 in any embodiment, the work vehicle in the present application also has all the beneficial effects of the wiper device 1 in any embodiment.

Specifically, in the wiper device 1 provided by the embodiment of the first aspect of the application, the output shaft of the output shaft assembly 30 is connected or disconnected from the coupling assembly 40, when the output shaft of the output shaft assembly 30 is connected to the coupling assembly 40 When the shaft assembly 40 is disconnected, the wiper 10, the wiper 20 and the output shaft assembly 30 can be opened simultaneously with the window 211. When the window 211 is closed, the first coupling part 401 is synchronized with the drive shaft of the drive mechanism 50 Rotate, the telescopic rod 410 rotates. When the position of the positioning plate 302 moves, the telescopic rod 410 contacts the positioning plate 302 and retracts into the first coupling portion 401. When the telescopic rod 410 rotates to a position relative to the insertion hole 3021, it will The insertion hole 3021 is connected to the positioning plate 302, so that the telescopic rod 410 drives the positioning plate 302 to rotate synchronously, and the main connecting shaft 303 rotates synchronously with the positioning plate 302 to make the scraping arm 20 rotate synchronously. The output shaft of the output shaft assembly 30 is connected with the coupling assembly 40 through the telescopic rod 410. The drive mechanism 50 can drive the wiper arm 20 and the wiper 10 to clean the window 211 normally. The coupling assembly 40 not only enables the drive mechanism The connection between 50 and the output shaft assembly 30 is reliable, and the torque transmission is reliable and rapid, the function of the wiper device 1 is stronger, and the stability of the wiper device 1 is effectively improved. Further, the motor drive shaft 502 and the main connecting shaft 303 of the output shaft assembly 30 are coaxially arranged. 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 to ensure the efficiency of the motor body 501 to drive the output shaft assembly 30 and reduce output energy consumption. It is worth noting that the motor body 501 is equipped with a motor wiring harness. The motor body 501 is located in the vehicle body. The motor wiring harness is connected to the vehicle wiring harness inside the vehicle body. reduce costs.

The structure of the scraping arm 20 is not limited, and may be a single-arm structure or a double-arm structure, depending on the user's requirements.

In summary, in summary, the beneficial effects of the embodiments of the present application are:

1. The output shaft of the driving mechanism 50 can be combined with or separated from the main connecting shaft 303 through the coupling assembly 40. When separated, the wiper arm 20 and the wiper 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 wiper arm 20, the wiper 10 and the output shaft assembly 30 are located on the glass or a part of the sheet metal structure of the glass, which can effectively reduce the weight of the glass window.

2. Through the design of the elastic member and the corresponding hole size of the coupling assembly 40 in the axial and radial directions, it can be automatically adjusted so that the motor drive shaft 502 and the main connecting shaft 303 are always coaxial, and can be effectively controlled The gap during bonding reduces wear and noise.

3. The coupling assembly 40 and the output shaft assembly 30 are connected by two or more telescopic rods 410, the force is even, and the mechanism is stable.

In the present application, the coupling assembly 40 and the output shaft assembly 30 are connected through the telescopic rod 410, which can ensure the connection between the output shaft assembly 30 and the coupling assembly 40, which not only improves the reliability of the connection between the drive mechanism 50 and the output shaft assembly 30, but also transmits The torque is rapid, and the versatility and stability of the wiper device 1 are effectively improved.

In this application, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; the term "plurality" refers to two or two Above, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and other terms 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 It is directly connected or indirectly connected through an intermediary. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In the description of this application, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions shown in the drawings. The or positional relationship is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the application.

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 embodiments or examples are included in this application In at least one embodiment or example. In this specification, the schematic representations of the above-mentioned terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

The foregoing descriptions are only preferred embodiments of the application, and are not intended to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

A wiper device, which includes:

Scrape

A scraping arm, one end of which is connected with the scraping brush;

One end of the output shaft assembly is connected with the end of the scraping arm away from the scraping brush;

Coupling components;

A driving mechanism connected with the coupling assembly;

The telescopic rod 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. The telescopic rod can be connected to the output shaft assembly along the The connection direction of the coupling assembly is stretched and contracted.
The wiper device according to claim 1, wherein the telescopic rod comprises:

Rod

The first elastic member is provided 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. The first elastic member is used to drive the shaft One end of the rod body close to the output shaft assembly extends out of the coupling assembly;

Wherein, a jack is provided on the output shaft assembly for mating with an end of the rod body protruding from the coupling assembly.
The wiper device according to claim 2, wherein the output shaft assembly comprises:

Positioning plate;

The positioning plate is spaced apart from the positioning plate;

The main connecting shaft penetrates the positioning plate and the positioning plate;

Wherein, one end of the main connecting shaft protruding from the positioning plate is connected to the scraper arm, one end of the main connecting shaft protruding from the positioning plate extends into the coupling assembly, and the socket is provided On the positioning plate.
The wiper device according to claim 3, wherein:

A plurality of connecting holes are arranged on the coupling assembly, and a telescopic rod is arranged in each of the plurality of connecting holes;

A plurality of said jacks are provided on said output shaft assembly;

Wherein, the telescopic rods correspond to the sockets one-to-one, a plurality of the connecting holes are evenly arranged along the circumferential direction of the coupling assembly, and a plurality of the sockets are evenly arranged along the circumferential direction of the positioning disk, so The length direction of the connecting hole is parallel to the connecting direction.
The wiper device according to claim 3, wherein:

The insertion hole is an elongated waist-shaped hole, and the length direction of the waist-shaped hole is arranged along the radial direction of the positioning disk.
The wiper device according to any one of claims 3 to 5, wherein the coupling assembly comprises:

The first coupling part is provided with sliding grooves along the radial direction;

The second coupling part is arranged in the chute;

The first shaft hole is provided at one end of the first coupling part close to the output shaft assembly;

The second shaft hole is provided on the second coupling part;

Wherein, the first shaft hole is used for mating with the end of the main connecting shaft protruding from the positioning plate, the second shaft hole is connected with the driving mechanism, and the telescopic rod is provided in the first coupling轴部上。 On the shaft.
The wiper device according to claim 6, wherein the second coupling portion is provided with a radial adjustment mechanism, and the radial adjustment mechanism comprises:

The second elastic member is arranged at one end of the second coupling part;

The first gland is fixedly connected with the first coupling part;

The third elastic member is arranged at the other end of the second coupling part;

The second gland is fixedly connected with the first coupling part;

Wherein, both ends of the second elastic member abut against the second coupling portion and the first gland respectively, and both ends of the third elastic member abut against the second coupling portion and the first gland respectively. Mentioned second gland.
The wiper device according to claim 6, further comprising:

The auxiliary connecting shaft is arranged on the positioning plate, and the auxiliary connecting shaft extends out of the positioning plate and is connected with the scraper arm;

Wherein, the scraping arm includes a first arm and a second arm, one end of the main connecting shaft extending from the positioning plate is connected to the first arm, and one end of the auxiliary connecting shaft extending from the positioning plate is connected to The second arm is connected.
A cab, which includes:

Car window

The wiper device according to any one of claims 1 to 8;

Wherein, the wiper, the wiper arm and the output shaft assembly are arranged on the vehicle window, and the driving mechanism and the coupling assembly are arranged in the cab.
A working vehicle, which includes:

Car body

The driver's cab according to claim 9, wherein the vehicle body is connected to the driver's cab; or

The wiper device according to any one of claims 1 to 8.