Camera
By designing an adaptive clamping wiper assembly, the problem of poor water removal effect in the camera window was solved, achieving efficient water removal and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2026-03-17
AI Technical Summary
Existing camera wiper assemblies are ineffective at clearing water from the viewport, resulting in poor water removal.
A wiper assembly comprising an elastic element, a wiper arm, and a wiper blade is designed. The elastic element enables the wiper blade to adaptively press against the window, ensuring that the wiper blade remains in effective contact with the window plane during its swing. Combined with replaceable wiper arms and wiper mounts, it can adapt to the needs of different window sizes.
The wiper assembly's cleaning performance has been improved, especially for removing water from the windshield, with a significant improvement in water removal efficiency. Costs have also been reduced by decreasing the number of parts and using plastic materials.
Smart Images
Figure CN224006756U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of camera technology, and more particularly to camera cameras. Background Technology
[0002] The camera includes a camera front panel, a viewport, a wiper assembly, and a wiper motor. The viewport and the wiper assembly are assembled on the camera front panel. The wiper motor drives the wiper assembly to clean the viewport (e.g., to remove water).
[0003] During use, it was found that the wiper assembly had poor sweeping performance. For example, it could not effectively remove water from the window, resulting in poor water removal. Utility Model Content
[0004] The purpose of this application is to disclose a camera.
[0005] This application discloses a camera. The camera includes a camera front panel, a viewing window, a wiper assembly, and a wiper motor. The viewing window and the wiper assembly are assembled on the camera front panel. The wiper motor drives the wiper assembly to sweep the viewing window. The wiper assembly includes an elastic element, a wiper arm, and a wiper blade. The wiper blade is rotatably connected to the wiper arm. The wiper arm includes a first end and a second end opposite each other along its length. The second end of the wiper arm is further away from the motor shaft of the wiper motor than the first end of the wiper arm. The elastic element includes a first end and a second end. The first end of the elastic element abuts against the first end of the wiper arm, and the second end of the elastic element abuts against the camera front panel or the motor shaft of the wiper motor. The wiper blade is assembled on the wiper arm, and under the action of the elastic element, the wiper blade is pressed against the viewing window.
[0006] In some embodiments, the wiper assembly includes a bushing connected to the wiper arm and the motor shaft of the wiper motor; the second end of the elastic member abuts against the motor shaft of the wiper motor by abutting against the bushing.
[0007] In some embodiments, the bushing includes a bushing body and two support arms. The bushing body is assembled with the motor shaft. Both support arms are connected to the bushing body and are arranged opposite to each other. The opposite sides of the first end of the wiper arm are respectively connected to the corresponding support arms. The first end of the wiper arm includes a first limiting groove, and the first end of the elastic element is located in the first limiting groove. The bushing body includes a second limiting groove, and the second end of the elastic element is located in the second limiting groove.
[0008] In some embodiments, the first end of the wiper arm includes a base and two mounting arms, the two mounting arms being located at opposite ends of the base to form a first limiting groove with the base; the first end of the wiper arm is located between the two mounting arms; the elastic element is located within the first limiting groove, and the first end of the elastic element directly abuts against the base.
[0009] In some embodiments, the elastic element is a torsion spring, and the camera includes a connecting post that passes through the support arm, the center of the torsion spring, and the mounting arm.
[0010] In some embodiments, the camera includes multiple wiper arms and a number of wipers equal to the number of wiper arms; the multiple wiper arms are interchangeably assembled with the bushing; the multiple wiper arms are of unequal length; the wipers include wiper frames and wipers assembled with the wiper frames; the multiple wiper frames are of unequal length.
[0011] In some embodiments, the wiper arm includes a receiving cavity; the receiving cavity includes an opening located at a second end of the wiper arm, the opening communicating with the interior of the receiving cavity and the exterior of the wiper arm along the length of the wiper arm; the wiper includes a wiper mount, the wiper being assembled into the receiving cavity by the wiper mount opening the receiving cavity; the wiper mount is rotatably connected to and clearance-fitted with the cavity wall opposite to the receiving cavity. Of the wiper arm and the wiper mount, at least the wiper arm is made of plastic.
[0012] In some embodiments, the wiper arm includes a receiving cavity, within which the wiper is located; the receiving cavity includes opposing cavity walls, each cavity wall including a mounting hole and a support post, the support post being located on the side of the mounting hole; the support post includes an arcuate surface. The wiper includes a wiper arm, with a protrusion and a groove on each opposite side of the wiper arm. The groove is located on the side of the protrusion, and the groove includes an arcuate surface. The protrusions are located one-to-one within the mounting holes, with a clearance fit; the support post is located within the groove, and the support post engages with the groove through the arcuate surface.
[0013] In some embodiments, the protrusion includes a guide surface that is inclined relative to the vertical surface in a direction away from the cavity wall.
[0014] In some embodiments, the wiper includes a wiper arm and a wiper blade; the wiper arm includes a mounting cavity, and an end of the mounting cavity includes a guide opening communicating with the interior of the mounting cavity and the exterior of the wiper, for the wiper blade to enter the mounting cavity. The wiper blade enters the mounting cavity through the guide opening and is fixed relative to the wiper arm.
[0015] For the camera, since the first end of the elastic element abuts against the first end of the wiper arm, the short lever arm results in a smaller force error. Consequently, the force of the elastic element minimizes the angular deviation between the wiper and the viewing window. During its swing, the wiper consistently maintains adaptive pressure against the plane of the contacted viewing window, effectively cleaning the window with good cleaning performance. For example, it effectively removes water from the viewing window, resulting in excellent water removal. Furthermore, the aforementioned wiper assembly includes an elastic element, a wiper arm, and a wiper blade, resulting in fewer parts and a lower overall height. Attached Figure Description
[0016] Figure 1 This is a perspective view of a camera shown according to an embodiment of this application;
[0017] Figure 2 This is a schematic diagram showing the connection between the wiper assembly and the wiper shaft according to an embodiment of this application;
[0018] Figure 3 This is a perspective view of a first type of windshield wiper assembly according to an embodiment of this application;
[0019] Figure 4 It is along Figure 3 A cross-sectional view along line AA;
[0020] Figure 5 yes Figure 3 An exploded view of the windshield wiper assembly shown;
[0021] Figure 6 yes Figure 5 A further exploded view of the wiper assembly shown;
[0022] Figure 7 This is an exploded view of a windshield wiper according to an embodiment of this application;
[0023] Figure 8 yes Figure 7 A perspective view of the wiper arm of the wiper assembly shown;
[0024] Figure 9 This is a perspective view of a wiper arm according to an embodiment of this application;
[0025] Figure 10 yes Figure 9 A three-dimensional view of the wiper arm from another angle;
[0026] Figure 11 This is a perspective view of the bushing according to an embodiment of this application;
[0027] Figure 12 This is a perspective view of a second type of wiper assembly shown according to an embodiment of this application;
[0028] Figure 13 This is a perspective view of a third wiper assembly according to an embodiment of this application. Detailed Implementation
[0029] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.
[0030] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.
[0031] See Figure 1 This application discloses a camera. The camera includes a front panel 1, a viewing window 2, a wiper assembly 3, and a wiper motor. The viewing window 2 and the wiper assembly 3 are assembled to the front panel 1. The wiper motor drives the wiper assembly 3 to wipe the viewing window 2, for example, to wipe away water. See also... Figure 2 , Figure 2 The camera is illustrated to include a wiper shaft 4. One end of the wiper shaft 4 is connected to the wiper assembly 3, and the other end is connected to the wiper motor (e.g., to the motor shaft of the wiper motor). In other embodiments, the motor shaft of the wiper motor and the wiper shaft 4 may be integrally constructed.
[0032] See Figures 3 to 6 The wiper assembly 3 includes an elastic element 31, a wiper arm 32, and a wiper 33. The wiper 33 is rotatably connected to the wiper arm 32; the manner of this rotatable connection is not limited. The elastic element 31 is not limited; for example, it can be a spring sheet or a torsion spring as described in this application. See also... Figure 7 , Figure 6 and Figure 4 The windshield wiper 33 includes a wiper bracket 331 and a wiper blade 332. The wiper bracket 331 is rotatably connected to the wiper arm 32, thereby enabling the wiper 33 to be rotatably connected relative to the wiper arm 32. See also Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 9 and Figure 10Along the length of the wiper arm 32, the wiper arm 32 includes a first end 321 and a second end 322 of the wiper arm. The second end 322 is further away from the motor shaft of the wiper motor than the first end 321. The elastic member 31 includes a first end 311 and a second end 312. The first end 311 abuts against the first end 321 of the wiper arm. The second end 312 abuts against the front panel of the camera 1 or the motor shaft of the wiper motor. The abutment method is not limited, as long as the elastic member 31 can ultimately apply a force to the wiper arm 32 so that the wiper 33 adaptively presses against the viewing window 2. The wiper 33 is assembled to the wiper arm 32. Under the action of the elastic member 31, the wiper 33 is pressed against the viewing window 2.
[0033] The working principle of the wiper assembly 3 is as follows: one end of the wiper shaft 4 is axially locked by a locking nut, and the other end of the wiper shaft 4 is connected to the wiper motor to realize the transmission of swing torque. The first end 311 of the elastic element is directly connected to the first end 321 of the wiper arm, and the wiper 33 is connected to the wiper arm 32. In this way, the force of the elastic element 31 realizes the reset adjustment of the wiper arm 32, so that during the swing of the wiper assembly 3, the wiper 33 can always adaptively press against the plane of the window 2 being contacted, effectively cleaning the window 2, such as effectively removing water from the window 2.
[0034] As described above, since the first end 311 of the elastic element abuts against the first end 321 of the wiper arm, the short lever arm results in a smaller force error. Consequently, the force of the elastic element 31 minimizes the angular deviation between the wiper 33 and the viewing window 2. During its swing, the wiper 33 maintains adaptive pressure against the plane of the viewing window 2, effectively cleaning the window 2 with good cleaning performance. For example, it effectively removes water from the viewing window 2. Furthermore, the wiper assembly 3 includes the elastic element 31, the wiper arm 32, and the wiper 33, resulting in fewer parts and a lower overall height.
[0035] See Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 11 The wiper assembly 3 includes a bushing 34. The bushing 34 is connected to the wiper arm 32 and the motor shaft of the wiper motor. The second end 312 of the elastic member abuts against the motor shaft by abutting against the bushing 34.
[0036] As described above, by setting the bushing 34, the bushing 34 and the wiper arm 32 can be reset and adjusted through the elastic element 31 (such as the torque of a torsion spring), which also makes it easier for the wiper 33 to adaptively press against the window 2, and also makes it easier for the elastic element 31 to abut against the wiper arm 32 and the motor shaft respectively.
[0037] See Figure 3 , Figure 5 , Figure 6 and Figure 11 The bushing 34 includes a bushing body 341 and two support arms 342. The bushing body 341 is assembled with the motor shaft. See also Figure 2 The bushing body 341 is provided with a shaft mounting hole 3411. The motor shaft (in this embodiment, the wiper shaft 4) is inserted into the shaft mounting hole 3411, for example, through a flat fitting or other structure. Both support arms 342 are connected to the bushing body 341 and are arranged opposite to each other. The opposite sides of the first end 321 of the wiper arm are respectively connected to the corresponding support arm 342. "Corresponding" means that the left side of the first end 321 of the wiper arm is assembled with the left-side support arm 342, and the right side of the first end 321 of the wiper arm is connected to the right-side support arm 342. See also... Figure 10 The wiper arm first end 321 includes a first limiting groove 3210, and the elastic element first end 311 is located within the first limiting groove 3210. The bushing body 341 includes a second limiting groove 3410. The elastic element second end 312 is located within the second limiting groove 3410.
[0038] As described above, since the first end 311 of the elastic element is located in the first limiting groove 3210 and the second end 312 of the elastic element is located in the second limiting groove 3410, the installation of the elastic element 31 is positioned by the limiting effect of the first limiting groove 3210 and the second limiting groove 3410, which facilitates the assembly of the elastic element 31 and also facilitates the limiting of the elastic element 31 during the swing of the wiper assembly 3. Furthermore, the wiper 33 can adapt to pressing against the window 2 more automatically.
[0039] See Figure 10 The first end 321 of the wiper arm includes a base 3211 and two mounting arms 3212. The two mounting arms 3212 are located at opposite ends of the base 3211 to form the first limiting groove 3210 with the base 3211. See also... Figure 3 and Figure 5 The first end 321 of the wiper arm is located between the two support arms 342. See also Figure 3 The elastic element 31 is located within the first limiting groove 3210, and the first end 311 of the elastic element directly abuts against the base.
[0040] As described above, the first end 321 of the wiper arm is located between the support arms 342 and is positioned by the support arms 342. The elastic member 31 is located in the first limiting groove 3210, and the first end 311 of the elastic member directly abuts against the base 3211. Thus, the elastic member 31 is easy to assemble. Moreover, the elastic member 31 is also located in the first limiting groove 3210, which also facilitates the limiting of the elastic member 31 during the swing of the wiper assembly 3. Furthermore, the wiper 33 can adapt to pressing against the window 2.
[0041] See Figure 2 , Figure 3 , Figure 5 and Figure 6 The elastic element 31 is a torsion spring, and the camera includes a connecting post 35 that passes through the support arm 342, the center of the torsion spring, and the mounting arm 3212. In this application, the camera also includes a retaining spring 36. After the connecting post 35 extends out of the support arm 342, the retaining spring 36 is used to secure the connecting post 35.
[0042] As described above, the elastic element 31 is positioned within the first limiting groove 3210 (within the U-shaped area) formed by the base 32111 and the two mounting arms 3212. The connecting post 35 passes through the support arm 342, the center of the torsion spring, and the mounting arm 3212. Thus, the elastic element 31, the wiper arm 32, and the bushing 34 are simple and convenient to assemble.
[0043] See Figure 12 , Figure 13 , Figure 3 and Figure 6 The camera includes multiple wiper arms 32 and an equal number of wipers 33. The multiple wiper arms 32 are of unequal length; the multiple wiper arms 32 are interchangeably assembled with the bushing 34. Each wiper 33 includes a wiper bracket 331 and a wiper blade 332 assembled with the wiper bracket 331. The multiple wiper brackets 331 are of unequal length. See also... Figure 3 , Figure 12 and Figure 13 , Figure 3 The wiper arm 32 and wiper bracket 331 of the wiper assembly shown are both the longest; Figure 12 The wiper arm 32 and wiper bracket 331 shown are next; Figure 13 The wiper arm 32 and wiper bracket 331 shown are the shortest.
[0044] As described above, the camera includes multiple wiper arms 32 and multiple wipers 33. The wiper arms 32 and bushings 34 are interchangeable. This interchangeability allows the bushings 34 to be used as a universal component, while the wiper arms 32 and wiper brackets 331 can be made in different lengths. This allows the bushings 34 to be paired with wiper arms 32 and wiper brackets 331 of different lengths, simultaneously working with the wiper blades 332 to form wiper assemblies of different lengths. This combination method better adapts to the water removal needs of camera front panels with different viewing areas, improves the interchangeability between components, and further reduces material costs.
[0045] See Figure 9 The wiper arm 32 includes a receiving cavity 323. The receiving cavity 323 includes an opening 3231 located at the second end 322 of the wiper arm. The opening 3231 communicates the interior of the receiving cavity 323 and the exterior of the wiper arm 32 along the length of the wiper arm 32; that is, the opening 3231 is located at the end of the wiper arm 32 away from the bushing 34. The wiper 33 includes a wiper bracket 331. The wiper 33 is assembled within the receiving cavity 323 by the wiper bracket 331, which expands the receiving cavity 323. After assembly, the wiper bracket 331 is rotatably connected to the cavity wall 3232 opposite to the receiving cavity 323, and is clearance-fitted with the cavity wall 3232. Of the wiper arm 32 and the wiper bracket 331, at least the wiper arm 32 is made of plastic.
[0046] As described above, at least the wiper arm 32 is made of plastic. On one hand, plastic parts have lower material costs compared to metal parts, and in special scenarios, no special surface treatment is required, further reducing material costs. On the other hand, the elasticity of the plastic allows the receiving cavity 323 to be opened to assemble the wiper 33, making assembly between the wiper 33 and the wiper arm 32 convenient. With both the wiper frame 331 and the wiper arm 32 being plastic parts, the elasticity of the plastic facilitates assembly of the wiper arm 32 and wiper frame 331, and in special scenarios, no special surface treatment is required, further reducing material costs.
[0047] See Figure 9 , Figure 8 and Figure 4The wiper arm 32 includes a receiving cavity 323. The wiper 33 is located within the receiving cavity 323. In this embodiment, the wiper arm 32 and the wiper holder 331 may not be plastic parts. The receiving cavity 323 includes opposing cavity walls 3232, each cavity wall 3232 including a mounting hole 3233 and a support post 3324. The support post 3324 includes an arcuate surface. The support post 3324 is located on the side of the mounting hole 3233. On the opposite side of the wiper holder 331, each side is provided with a protrusion 3312 and a groove 3313. The groove includes an arcuate surface. The groove 3313 is located on the side of the protrusion 3312. The protrusions 3312 are installed one-to-one in the mounting holes 3233, with a clearance fit with the mounting holes 3233. The support post 3324 is located within the groove 3313, and the support post 3324 and the groove 3313 engage through the arcuate surface. The shape of the curved surface is not limited, as long as it allows the wiper bracket 331 to rotate effectively relative to the wiper arm 32.
[0048] As described above, since the support column 3324 and the groove 3313 are fitted together by an arc-shaped surface, it serves as a fulcrum for the rotation of the wiper 33 and the wiper arm 32 (which can be understood as a seesaw). It bears the force generated during the rotation of the wiper 33, thus enabling the wiper 33 to rotate more effectively. In addition, the clearance fit between the protrusion 3312 and the mounting hole 3323 also gives them a certain pivotal function. The support column 3324 also helps prevent the protrusion 3312 from breaking.
[0049] See Figure 4 The protrusion 3312 includes a guide surface 33121. The guide surface 33121 is inclined relative to the vertical surface in a direction away from the cavity wall 3232.
[0050] As described above, since the guide surface 33121 of the protrusion 3312 faces away from the cavity wall 3232 relative to the vertical surface, the guide surface 33121 can guide the wiper 33 during the process of inserting the wiper 33 into the receiving cavity 323, making it easier for the wiper 33 to be inserted into the receiving cavity 323. Of course, when at least the wiper arm 32 is a plastic part, the guide surface 33121, combined with the elasticity of the wiper arm 32, makes it even easier for the wiper 33 and the wiper arm 32 to be assembled.
[0051] See Figure 4 , Figures 6 to 8The wiper 33 includes a wiper holder 331 and a wiper blade 332; the wiper holder 331 includes a mounting cavity. The end of the mounting cavity includes a guide opening 3314. The guide opening 3314 connects the interior of the mounting cavity 3310 and the exterior of the wiper 33. When installing the wiper blade 332, the wiper blade 332 enters the mounting cavity 3310 through the guide opening 3314, and then moves along the length of the mounting cavity 3310 or the length of the wiper holder 331, ultimately settling within the mounting cavity 3310. After installation, the wiper blade 332 is relatively fixed to the wiper holder 331. Various structures can achieve this relative fixation, such as clamping using a gap 3315, or the wiper blade 332 being embedded in the wiper holder 331, etc.
[0052] As described above, by providing a guide port 3314, the wiper blade 332 is inserted into the mounting cavity 3310 through the guide port 3314, which facilitates the assembly of the wiper blade 332.
[0053] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.
Claims
1. A video camera characterized by comprising: The camera comprises a camera front face, a window, a wiper assembly and a wiper motor, the window and the wiper assembly are assembled on the camera front face; the wiper motor drives the wiper assembly to wipe the window; The wiper assembly comprises an elastic element, a wiper arm and a wiper, the wiper is rotationally connected with the wiper arm; the wiper arm comprises opposite first and second ends in the length direction; the second end is farther away from the motor shaft of the wiper motor than the first end; The elastic element comprises first and second ends; the first end abuts against the first end of the wiper arm, and the second end abuts against the camera front face or the motor shaft of the wiper motor; The wiper is assembled on the second end of the wiper arm, and is pressed against the window under the action of the elastic element; The wiper assembly comprises a shaft sleeve, which is connected with the wiper arm and the motor shaft of the wiper motor; the second end of the elastic element is abutted against the shaft sleeve to abut against the motor shaft of the wiper motor.
2. The camera of claim 1, wherein, The shaft sleeve comprises a sleeve body and two arms, the sleeve body is assembled with the motor shaft; the two arms are connected with the sleeve body and oppositely arranged; the first end of the wiper arm is connected with the corresponding arm on the opposite side; The first end of the wiper arm comprises a first limiting groove, and the first end of the elastic element is located in the first limiting groove; the sleeve body comprises a second limiting groove, and the second end of the elastic element is located in the second limiting groove.
3. The camera of claim 2, wherein, The first end of the wiper arm comprises a base and two mounting arms, the two mounting arms are located on the opposite ends of the base to form the first limiting groove with the base; the first end of the wiper arm is located between the two arms; the elastic element is located in the first limiting groove, and the first end of the elastic element directly abuts against the base.
4. The camera of claim 3, wherein, The elastic element is a torsion spring, and the camera comprises a connecting column, which passes through the center of the torsion spring, the arm and the mounting arm.
5. The camera of claim 1, wherein, The camera comprises a plurality of wiper arms and wipers equal in number to the wiper arms; the plurality of wiper arms are replaceably assembled with the shaft sleeve; the lengths of the plurality of wiper arms are not equal; the wiper comprises a wiper frame and a wiper assembled with the wiper frame; the lengths of the plurality of wiper frames are not equal.
6. The camera of claim 1, wherein, The wiper arm comprises a receiving cavity; the receiving cavity comprises an opening at the second end of the wiper arm, which communicates the inside of the receiving cavity with the outside of the wiper arm in the length direction of the wiper arm; the wiper comprises a wiper frame, and the wiper is assembled in the receiving cavity by the wiper frame expanding the receiving cavity; the wiper frame is rotationally connected with the cavity wall opposite to the receiving cavity with a clearance; At least the wiper arm is made of plastic among the wiper arm and the wiper frame.
7. The camera of claim 1, wherein, The wiper arm comprises a receiving cavity, and the wiper is located in the receiving cavity; the receiving cavity comprises opposite cavity walls, each cavity wall comprises a mounting hole and a support column, the support column is located on the side of the mounting hole, and the support column comprises an arc surface; The wiper includes a wiper frame, a convex point and a concave groove are arranged on each side of the wiper frame, the concave groove is located on the side of the convex point, and the concave groove includes an arc surface; The convex point is located in the mounting hole in a one-to-one correspondence, and is matched with the mounting hole in a gap; the support column is located in the concave groove, and the support column is matched with the concave groove through the arc surface.
8. The camera of claim 7, wherein, The convex point includes a guide surface, and the guide surface is inclined away from the cavity wall relative to a vertical surface.
9. The camera of claim 1, wherein, The wiper includes a wiper frame and a wiper strip; the wiper frame includes a mounting cavity, and an end of the mounting cavity includes a guide opening, which communicates the inside of the mounting cavity and the outside of the wiper; The wiper strip enters the mounting cavity from the guide opening and is fixed relative to the wiper frame.
10. A video camera characterized by comprising: The camera includes a camera front face, a window, a wiper assembly and a wiper motor, the window and the wiper assembly are assembled on the camera front face, and the wiper motor drives the wiper assembly to wipe the window; The wiper assembly includes an elastic member, a wiper arm, a wiper and a shaft sleeve, the wiper is rotationally connected with the wiper arm, the wiper arm includes opposite first and second wiper arm ends in a length direction, and the second wiper arm end is farther away from a motor shaft of the wiper motor than the first wiper arm end; The elastic member includes first and second elastic member ends; The shaft sleeve is configured to have a second limiting groove, the first wiper arm end is configured to have a first limiting groove, the first elastic member end is located in the first limiting groove, and the second elastic member end is located in the second limiting groove; The wiper is assembled on the second wiper arm end, and the wiper is pressed against the window under the action of the elastic member.