Wiper assembly, camera assembly and network camera

Abstract

This utility model relates to the field of intelligent security technology, and provides a wiper assembly, a camera assembly, and a network camera. In the wiper assembly, a first driving component of the driving assembly is mounted to the camera assembly. The output shaft of the first driving component passes through the housing of the camera assembly and extends to the outside of the camera assembly. A carrier is connected to the output shaft extending to the outside of the camera assembly. A second driving component is disposed on the carrier. A wiper support arm is connected to the second driving component and is adapted to swing along a first plane under the driving action of the first driving component, and is also adapted to swing along a second plane under the driving action of the second driving component. The second plane and the first plane are set at an angle to each other. The wiper blade is disposed on the outer wall of the wiper support arm. This utility model not only has water removal or dust removal functions, but also cobweb removal functions, and is suitable for high-altitude installation of full-color IPCs, solving the problems of difficult traditional manual cleaning and high maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of intelligent security technology, and in particular to a wiper assembly, a camera assembly, and a network camera. Background Technology

[0002] With the rapid development of intelligent security technology, full-color network cameras (hereinafter referred to as full-color IPCs) are capable of 24-hour color monitoring and are widely used in scenarios such as road monitoring and community security. To meet the imaging needs in low-light environments at night, existing full-color IPCs are generally equipped with white light supplementary lights as auxiliary light sources to improve image clarity through active supplementary lighting.

[0003] However, while turning on the white light fill light solves the color reproduction problem in nighttime imaging, it also brings unavoidable environmental adaptability defects. The strong directionality and high brightness of white light easily attract phototactic flying insects (such as spiders, moths, mosquitoes, and flies) to gather around the camera, creating a continuous environment for insect activity. When the white light fill light is turned on in a full-color IPC, the continuous activity of these insects creates a stable food source in front of the camera lens, causing spiders to choose to weave webs in front of the lens to catch prey. The spider webs interfere with the light propagation path of the fill light: on the one hand, the filamentous structure of the spider web causes diffuse reflection of the white light, leading to decreased uniformity of the fill light and undesirable phenomena such as light spots and halos in the image; on the other hand, some sticky spider silk may adhere to the lens surface, directly blocking the effective field of view, and in severe cases, causing partial image loss or blurring, significantly reducing the imaging quality of nighttime monitoring.

[0004] To address this, related technologies involve regularly cleaning the cobwebs around full-color IPCs manually to ensure the imaging quality of nighttime monitoring. However, since full-color IPCs are often installed outdoors at high altitudes, traditional manual cleaning methods require the use of climbing equipment or professional personnel. This not only poses operational safety risks but also results in high maintenance costs due to the wide distribution of the equipment and the high frequency of maintenance. Utility Model Content

[0005] This utility model provides a wiper assembly, a camera assembly, and a network camera to solve the above-mentioned technical defects in the prior art. It not only has water removal or dust removal functions, but also has a cobweb removal function. It is suitable for full-color IPC scenarios installed at high altitudes and solves the problems of difficult traditional manual cleaning and high maintenance costs.

[0006] The first aspect of this utility model provides a wiper assembly, comprising:

[0007] Driver components, including:

[0008] A first drive component is used to be mounted to a camera assembly. The output shaft of the first drive component passes through the housing of the camera assembly and extends to the outside of the camera assembly.

[0009] A support member is connected to an output shaft extending to the outside of the camera assembly;

[0010] A second driving component is disposed on the carrier member;

[0011] A wiper support arm is connected to the second driving component. The wiper support arm swings along a first plane under the driving action of the first driving component, and swings along a second plane under the driving action of the second driving component. The second plane and the first plane are set at an angle to each other.

[0012] Wiper blades are disposed on the outer side wall of the wiper support arm.

[0013] The wiper assembly provided by this utility model further includes a cobweb cleaning component, the cobweb cleaning component comprising:

[0014] A cleaning drive component is provided on the wiper support arm;

[0015] A cleaning body is connected to the output end of the cleaning drive component and is adapted to move in a straight line under the action of the cleaning drive component to switch between a retracted state and a cleaning state. In the retracted state, the cleaning body is located inside the wiper support arm; in the cleaning state, at least a portion of the cleaning body extends out of the wiper support arm to perform cleaning.

[0016] According to the wiper assembly provided by this utility model, the wiper support arm has an internal structure with a receiving cavity, and the receiving cavity extends along the length direction of the wiper support arm;

[0017] The wiper support arm has a first end and a second end that are disposed opposite to each other. The first end is connected to the second drive component, and the second end is provided with an opening that communicates with the receiving cavity.

[0018] The cleaning drive component and the cleaning body are both located in the accommodating cavity. In the cleaning state, at least a portion of the cleaning body extends out from the opening to perform cleaning.

[0019] According to the wiper assembly provided by this utility model, the cleaning drive component includes:

[0020] A cleaning drive component is fixedly disposed in the accommodating cavity;

[0021] A transmission component is rotatably disposed in the accommodating cavity, and the transmission component is connected to the output end of the cleaning drive component;

[0022] At least a portion of the cleaning body is in transmission cooperation with the transmission component, and is adapted to perform linear reciprocating motion with the transmission component.

[0023] According to the wiper assembly provided by this utility model, the transmission component includes:

[0024] The lead screw is mounted on the inner wall of the accommodating cavity at both ends via bearing components;

[0025] The nut engages with the lead screw drive.

[0026] At least a portion of the cleaning body is connected to the nut, and the side of the corresponding cleaning body facing away from the nut abuts against the inner wall of the receiving cavity.

[0027] According to the wiper assembly provided by this utility model, the cleaning body includes:

[0028] The base material is in transmission cooperation with the transmission component;

[0029] At least two cleaning strips are provided, with each pair of cleaning strips spaced apart on the end face of the substrate, and each pair of cleaning strips are symmetrically arranged about the central axis of the substrate.

[0030] In the stored state, each of the cleaning strips is stored in the receiving cavity; in the cleaning state, each of the cleaning strips extends out of the opening and is opened away from the perimeter for cleaning.

[0031] According to the wiper assembly provided by this utility model, a sealing element is provided at the opening position, and the sealing element is used to close the opening;

[0032] The seal has at least one through-scratch.

[0033] When the cleaning strip comes into contact with the seal, the edges of the scratches are used to peel off the cobwebs adhering to the surface of the cleaning strip.

[0034] According to the wiper assembly provided by this utility model, the cleaning body includes a silicone rubber cleaning body or a Teflon cleaning body.

[0035] The second aspect of this utility model provides a camera assembly, comprising:

[0036] A housing having a lens window and a fill light, the fill light being located on one side of the lens window; and a wiper assembly including any one of the above, the wiper assembly being located on the housing.

[0037] The third aspect of this utility model provides a network camera, including an image acquisition module, a network communication module, and the camera assembly, wherein the image acquisition module and the network communication module are both disposed inside the camera assembly;

[0038] The image acquisition module is used to acquire image information;

[0039] The network communication module interacts with the backend via the network.

[0040] The wiper assembly provided by this utility model includes a first driving component, a carrier, and a second driving component. The first driving component is used to be installed on the camera assembly. The output shaft of the first driving component passes through the housing of the camera assembly and extends to the outside of the camera assembly. The carrier is connected to the output shaft extending to the outside of the camera assembly. The second driving component is disposed on the carrier. The wiper support arm is connected to the second driving component. The wiper support arm swings along a first plane under the driving action of the first driving component, and swings along a second plane under the driving action of the second driving component. The second plane and the first plane are arranged at an angle to each other.

[0041] When automatic cleaning of the spiderweb-like debris around the lens window is required, the second drive unit drives the wiper support arm to initially swing along the ZX plane (i.e., the second plane), lifting the wiper support arm from its initial position (dormant position) close to the window glass, reserving space for subsequent cleaning actions. Once the wiper support arm has swung into position, the first drive unit activates, driving the wiper support arm to rotate. The rotation trajectory of the wiper support arm complements the swing plane of the ZX plane, covering the upper and lower edges of the window and the front area.

[0042] Essentially, the second drive component works in conjunction with the first drive component to achieve a combined swinging and rotating motion: the second drive component controls the wiper support arm to swing back and forth within the ZX plane (the second plane), covering the main viewing area of ​​the window; the first drive component simultaneously drives the wiper support arm to rotate within the ZY plane (the first plane), sweeping over the edges of the lens window and the areas not covered by the wiper blades. Once the spiderweb cleaning is complete, each drive component automatically resets. The entire process requires no manual intervention, making it suitable for high-altitude installations of full-color IPCs, solving the problems of difficult and costly traditional manual cleaning.

[0043] The camera assembly and network camera provided by this utility model, because they include the aforementioned wiper assembly, respectively possess the advantages of the aforementioned wiper assembly, not only having water removal or dust removal functions, but also having an additional cobweb removal function. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0045] Figure 1 This is a schematic diagram of the structure of the wiper assembly provided in this embodiment of the utility model.

[0046] Figure 2 This is a three-dimensional schematic diagram of the wiper support arm in the wiper assembly provided in this embodiment of the utility model.

[0047] Figure 3 This is a schematic diagram of the trajectory of the wiper assembly provided in this embodiment of the utility model.

[0048] Figure 4 This is one of the structural schematic diagrams of the wiper support arm in the wiper assembly provided in this utility model embodiment (the spider web cleaning component is in a stored state).

[0049] Figure 5 This is the second schematic diagram of the structure of the wiper support arm in the wiper assembly provided in this embodiment of the utility model (the spider web cleaning component is in a clean state).

[0050] Figure 6 This is a schematic diagram of the structure of the camera assembly provided in an embodiment of the present invention.

[0051] Figure label:

[0052] 100. Housing; 110. Lens window; 120. Fill light; 200. Wiper assembly;

[0053] 10. Drive assembly; 11. First drive component; 12. Carrier; 13. Second drive component;

[0054] 20. Wiper arm; 21. Receiving cavity; 22. First end; 23. Second end;

[0055] 30. Wiper blades;

[0056] 40. Web cleaning component; 41. Cleaning drive component; 411. Cleaning drive element; 412. Transmission component; 42. Cleaning body; 421. Substrate; 422. Cleaning strip;

[0057] 50. Seals; 51. Scratches. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0059] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0060] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0062] Figure 1 This is a schematic diagram of the structure of the wiper assembly provided in this embodiment of the utility model. Figure 2 This is a three-dimensional schematic diagram of the wiper support arm in the wiper assembly provided in this embodiment of the utility model. Figure 3 This is a schematic diagram of the trajectory of the wiper assembly provided in this embodiment of the utility model.

[0063] See Figures 1 to 3 This utility model provides a wiper assembly 200, which includes a drive assembly 10, a wiper support arm 20, and a wiper blade 30.

[0064] The drive assembly 10 includes a first drive component 11, a carrier component 12, and a second drive component 13.

[0065] A first drive component 11 is used for mounting to a camera assembly. The output shaft of the first drive component 11 passes through the housing 100 for mounting to the camera assembly and extends to the outside of the camera assembly. A carrier 12 is connected to the output shaft extending to the outside of the camera assembly and is used to drive the wiper support arm 20 to move in a first plane. A second drive component 13 is disposed on the carrier 12 and is movably connected to the first end 22 of the wiper support arm 20. The second drive component 13 is used to drive the wiper support arm 20 to move in a second plane, which is set at an angle to the first plane. The first plane is defined as the vertical swing plane of the wiper support arm 20, that is, parallel to the window glass and covering the left and right sides of the window. The second plane is defined as the horizontal swing plane of the wiper support arm 20, that is, perpendicular to the window glass and covering the position in front of the window.

[0066] Specifically, a square connecting groove can be opened on the carrier 12, and the square connecting groove is engaged and fixed with the flange of the output shaft of the first drive component 11 so that the output shaft of the first drive component 11 drives the carrier 12 to rotate synchronously. An elastic gasket (such as a silicone rubber gasket) is embedded between the output shaft and the connecting groove to absorb the vibration and impact during the driving process and avoid component fatigue caused by rigid collision.

[0067] A mounting groove can be provided on the side of the carrier 12 opposite to the first drive component 11. A hinge shaft is provided at the first end 22 of the wiper support arm 20. The hinge shaft is mounted in the mounting groove through a bearing seat. The second drive component 13 may include a motor and a transmission. For example, to reduce transmission noise, the second drive component 13 may adopt a structure of a motor, a synchronous belt, and a pulley. The motor is fixedly installed in the mounting groove of the carrier 12. The synchronous belt is sleeved between the driving pulley and the driven pulley. The driving pulley is connected to the output shaft of the motor, and the driven pulley is fixed on the hinge shaft.

[0068] This embodiment of the utility model uses a full-color IPC as an example to illustrate the automatic cleaning process of the cobwebs around the lens window 110:

[0069] When cobwebs are detected around the viewing window (e.g., by monitoring changes in the reflective intensity of the supplementary light 120 via a light sensor, or by a timed trigger), that is, when the IPC detects cobwebs obstructing the viewing window via the supplementary light 120 reflective sensor (or a visual algorithm), it triggers the cobweb removal mode or the device automatically starts the cleaning program according to a preset cycle (e.g., every 2 hours). At this time:

[0070] The second drive unit 13 receives the PWM control signal from the controller (IPC motherboard) and drives the wiper support arm 20 to swing initially along the ZX plane (i.e., the second plane), lifting the wiper support arm 20 from the initial position (dormant position) close to the window glass, reserving space for subsequent cleaning actions.

[0071] When the wiper support arm 20 swings into position, the first drive component 11 (such as a stepper motor or servo motor) is activated, driving the wiper support arm 20 to rotate. The rotation trajectory of the wiper support arm 20 complements the swing plane of the ZX plane, covering the upper and lower edges and the front area of ​​the window. Figure 3 As shown.

[0072] Essentially, the second drive component 13 works in conjunction with the first drive component 11 to achieve a combined swinging and rotating motion: the second drive component 13 controls the wiper support arm 20 to swing back and forth in the ZX plane (second plane), covering the main viewing area of ​​the window; the first drive component 11 synchronously drives the wiper support arm 20 to rotate in the ZY plane (first plane), sweeping across the edge of the lens window 110 and the non-covered area of ​​the wiper blade 30, such as... Figure 3 As shown.

[0073] After the spider web cleaning is completed, the second drive unit 13 drives the wiper support arm 20 to swing along the ZX plane again, slowly retracting the wiper support arm 20 from the raised position until the wiper blade 30 is in close contact with the window glass to avoid scratching the glass due to shaking.

[0074] Finally, the first drive component 11 stops rotating, the wiper support arm 20 returns to its initial angle, the second drive component 13 locks the output shaft, the entire cleaning process ends, the device returns to standby mode, and waits for the next trigger.

[0075] It is understood that the wiper assembly 200 provided in this embodiment of the present invention includes a drive assembly 10 comprising a first drive component 11, a carrier component 12, and a second drive component 13. The first drive component 11 is used to be mounted to the camera assembly. The output shaft of the first drive component 11 passes through the housing 100 of the camera assembly and extends to the outside of the camera assembly. The carrier component 12 is connected to the output shaft extending to the outside of the camera assembly. The second drive component 13 is disposed on the carrier component 12. The wiper support arm 20 is connected to the second drive component 13. The wiper support arm 20 swings along a first plane under the driving action of the first drive component 11, and swings along a second plane under the driving action of the second drive component 13. The second plane and the first plane are arranged at an angle to each other.

[0076] When automatic cleaning of the spiderweb-like debris around the lens window 110 is required, the second drive unit 13 drives the wiper support arm 20 to initially swing along the ZX plane (i.e., the second plane), lifting the wiper support arm 20 from its initial position (dormant position) close to the window glass, reserving space for subsequent cleaning actions. After the wiper support arm 20 swings into place, the first drive unit 11 activates, driving the wiper support arm 20 to rotate. The rotation trajectory of the wiper support arm 20 complements the swing plane of the ZX plane, covering the upper and lower edges and the front area of ​​the window.

[0077] Essentially, the second drive component 13 works in conjunction with the first drive component 11 to achieve a combined swinging and rotating motion: the second drive component 13 controls the wiper support arm 20 to swing back and forth in the ZX plane (the second plane), covering the main viewing area of ​​the window; the first drive component 11 synchronously drives the wiper support arm 20 to rotate in the ZY plane (the first plane), sweeping over the edge of the lens window 110 and the non-covered area of ​​the wiper blade 30. After the cobweb cleaning is completed, each drive component automatically resets. The entire process requires no manual intervention and is suitable for full-color IPC scenarios installed at heights, solving the problems of difficult traditional manual cleaning and high maintenance costs.

[0078] Figure 4 This is one of the structural schematic diagrams of the wiper support arm in the wiper assembly provided in this utility model embodiment (the spider web cleaning component is in a stored state). Figure 5 This is the second schematic diagram of the structure of the wiper support arm in the wiper assembly provided in this embodiment of the utility model (the spider web cleaning component is in a clean state).

[0079] See Figure 4 and Figure 5 In some embodiments of this utility model, the wiper support arm 20 serves as the movable carrier of the wiper blade 30 and typically has a swinging or rotating function. The wiper support arm 20 has an internal cavity 21 extending along its length. The wiper support arm 20 has a first end 22 and a second end 23 disposed opposite to each other. The first end 22 is movably connected to the drive assembly 10, and the second end 23 has an opening communicating with the cavity 21. The wiper blade 30 is disposed on the outer wall of the wiper support arm 20.

[0080] The wiper assembly 200 also includes a web-cleaning component 40, which includes a cleaning drive component 41 and a cleaning body 42. The cleaning drive component 41 is located in the receiving cavity 21 and can be a miniature linear motor (such as a voice coil motor or a piezoelectric ceramic motor) or a miniature rotary motor and a reduction mechanism (such as a reduction gear set). If the miniature linear motor can directly output linear displacement, the transmission structure is simplified; if a rotary motor is used, the rotary motion needs to be converted into linear motion through the transmission component 412.

[0081] The cleaning body 42 is connected to the output end of the cleaning drive component 41 and is adapted to reciprocate along a straight line under the action of the cleaning drive component 41 to switch between a retracted state and a cleaning state. In the retracted state, the cleaning body 42 is housed in the receiving cavity 21 to prevent exposure from affecting the appearance of the wiper assembly 200 or scratching the lens window 110. In the cleaning state, at least a portion of the cleaning body 42 extends from the opening to perform cleaning.

[0082] The cleaning body 42 uses a retractable soft brush strip or an adhesive silicone strip. The brush material is preferably soft PA6 nylon filaments (to avoid scratching the glass) or adhesive silicone strips (to adhere to insect remains). Depending on the shape of the lens window 110 (usually circular or square) and the cleaning area requirements, the cleaning body 42 can be designed as an arc-shaped brush strip (fitting the curvature of the window) or a rectangular flat brush (covering a larger area). Additionally, the cleaning body 42 can be designed as a telescopic structure perpendicular to the swing direction of the wiper arm 20.

[0083] This embodiment of the invention is based on a wiper assembly 200, retaining the wiper support arm 20 and wiper blade 30 for removing rainwater or dust from the surface of the lens window 110. In addition, a receiving cavity 21 is machined inside the wiper support arm 20, extending along the length of the wiper support arm 20. An opening communicating with the receiving cavity 21 is formed at the second end 23 (non-movable end) of the wiper support arm 20, creating a hidden space to accommodate the cobweb cleaning component 40. The wiper blade 30 remains located on the outer wall of the wiper support arm 20, maintaining its original water or dust removal function.

[0084] This configuration allows the wiper blade 30 and the web-cleaning component 40 to share the wiper support arm 20, preserving the original water or dust removal function of the wiper assembly 200 while simultaneously addressing the web-covering issue through the multi-directional scanning coverage of the web-cleaning component 40. The two functions operate independently, and the web-cleaning component 40 is fully retracted when not in use, ensuring unaffected light transmission through the lens window 110 and the flexible movement of the wiper assembly 200, thus guaranteeing stable image quality for the IPC in low-light conditions.

[0085] When it is necessary to clean the cobwebs around the lens window 110, the second drive unit 13 drives the wiper support arm 20 to initially swing along the ZX plane (i.e., the second plane), lifting the wiper support arm 20 from its initial position (dormant position) close to the window glass, reserving space for subsequent cleaning actions. After the wiper support arm 20 swings into place, the first drive unit 11 is activated, driving the wiper support arm 20 to rotate. The rotation trajectory of the wiper support arm 20 complements the swing plane of the ZX plane, covering the upper and lower edges and the front area of ​​the window. At the same time, the cleaning drive unit 41 is activated (it can be triggered periodically by the IPC built-in controller, or automatically triggered after the light sensor / infrared sensor detects cobwebs blocking light), driving the cleaning body 42 to move linearly along the inner wall of the accommodating cavity 21, extending from the opening to the front of the lens window 110. During the combined movement of the wiper support arm 20, the cleaning body 42 forms a three-dimensional scanning area in front of the lens window 110 along the swing trajectory, achieving thorough removal of cobwebs. After the cobweb cleaning is completed, all drive components automatically reset, the cleaning drive component 41 reverses its direction, and the cleaning body 42 retracts into the receiving cavity 21, restoring the initial storage state.

[0086] This design results in a compact overall structure with fewer parts, reducing the processing and assembly costs of the wiper assembly 200. Furthermore, the cleaning drive component 41 and the cleaning body 42 are housed within the receiving cavity 21, isolating them from external dust or rainwater, extending their service life and reducing the frequency of future maintenance.

[0087] In addition, to prevent the cleaning body 42 from shifting during the extension and retraction process, guide grooves (which cooperate with the sliders of the cleaning body 42) or guide rails (such as T-slots) can be provided on the inner wall of the accommodating cavity 21. For example, sliders can be provided on both sides of the cleaning body 42 to slide and cooperate with the grooves on the inner wall of the accommodating cavity 21 to ensure that the cleaning body 42 moves in a straight line.

[0088] Continue reading Figure 4 and Figure 5 In some embodiments of this utility model, the cleaning drive component 41 includes a cleaning drive element 411 and a transmission component 412. The cleaning drive element 411 is fixedly disposed in the receiving cavity 21; the transmission component 412 is rotatably disposed in the receiving cavity 21, and one end of the transmission component 412 is connected to the output end of the cleaning drive element 411. At least a portion of the cleaning body 42 is in transmission cooperation with the transmission component 412, and is adapted to perform linear motion with the transmission component 412.

[0089] In other words, when cleaning sticky cobwebs, the cleaning drive component 41 provided in this embodiment of the invention preferably consists of a miniature ball screw with greater driving force forming the transmission component 412. The cleaning drive component 411 is a miniature rotary motor, the output shaft of which is connected to the screw, and the nut of the screw is fixedly connected to the cleaning body 42. When the rotary motor rotates, the screw rotates, causing the nut to move linearly along the screw axis, thereby realizing the extension and retraction of the cleaning body 42.

[0090] That is: the transmission component 412 includes a lead screw, the two ends of which are mounted on the inner wall of the accommodating cavity 21 through bearings; the nut is engaged with the lead screw; wherein, the cleaning body 42 is connected to the nut, and the side of the cleaning body 42 away from the nut abuts against the inner wall of the accommodating cavity 21.

[0091] Specifically, taking a full-color IPC as an example, when the full-color IPC detects a spider web in front of the lens window 110 (via the reflectivity sensor of the supplementary light 120 or a timed trigger), the controller sends an action command to the cleaning drive unit 411. When the cleaning drive unit 411 (such as a miniature rotary motor) drives the lead screw to rotate, the helical groove of the lead screw interacts with the internal thread of the nut, converting the rotational motion of the lead screw into the axial linear motion of the nut.

[0092] The side of the cleaning body 42 away from the nut directly abuts against the inner wall of the accommodating cavity 21, replacing the complex structure that requires additional installation of guide rails or slides in traditional linear transmission. The linear guidance of the cleaning body 42 is achieved through the physical constraint of the inner wall of the accommodating cavity 21.

[0093] Furthermore, the self-locking characteristic of the lead screw and nut transmission pair (i.e., the nut will not slide due to gravity or external force when there is no driving force) ensures that the cleaning body 42 remains stable in the extended state, preventing the cleaning body 42 from retracting due to equipment vibration (such as wind or wiper oscillation). In addition, the lead screw pitch can be adjusted according to the cleaning force requirements: a small pitch (such as 1mm / turn) provides a slower but smoother extension speed, suitable for fine cleaning, while a large pitch (such as 3mm / turn) can increase the extension speed, suitable for rapid screen removal, flexibly adapting to different scenarios.

[0094] In addition, the transmission component 412 can also employ a gear and rack mechanism, with the cleaning body 42 positioned at the end of the rack. Taking a full-color IPC as an example, when the full-color IPC detects cobwebs in front of the lens window 110 (via the reflective intensity sensor of the supplementary light 120 or a timed trigger), the controller sends an action command to the cleaning drive component 411. The micro rotary motor rotates forward, driving the spur gear to rotate clockwise. Under the meshing action of the gear, the rack moves linearly along the receiving cavity 21 towards the opening. The cleaning body 42 (brush strip) extends from the opening until it contacts the surface of the window. The cleaning body 42 covers the area around the lens window 110 as the wiper support arm 20 swings, with the brush or adhesive silicone strip scraping away or adhering the cobwebs. After cleaning, the rotary motor reverses, the gear rotates counterclockwise, and the rack drives the cleaning body 42 back into the receiving cavity 21. The slider smoothly resets along the slide groove, and the cleaning body 42 is fully retracted, preventing exposure and scratches.

[0095] The cleaning drive component 41 provided in this embodiment of the utility model uses a transmission component 412 to accurately convert the rotational motion of the cleaning drive component 411 into the linear motion of the cleaning body 42, which can effectively avoid deviation or jamming and improve the reliability of operation.

[0096] Continue reading Figure 4 and Figure 5 In some embodiments of this invention, the cleaning body 42 includes a substrate 421 and at least two cleaning strips 422. Both the substrate 421 and the at least two cleaning strips 422 are made of silicone rubber or Teflon, ensuring that the cleaning strips 422 are not easily broken during repeated compression and unfolding. Furthermore, silicone rubber is soft and will not scratch the window glass during cleaning, while its elastic deformation allows it to conform to uneven window surfaces. Teflon's low surface energy effectively solves the problem of sticky cobweb residue, and its weather resistance ensures long-term outdoor use, making it particularly suitable for humid, insect-prone southern regions or coastal environments with high salt spray.

[0097] The base 421 is driven by the transmission component 412. Two cleaning strips 422 are spaced apart on the end face of the base 421, and are symmetrically arranged about the central axis of the base 421. The width and height of each cleaning strip 422 are smaller than the width and height of the base 421, effectively making each pair of cleaning strips a tubular structure formed by cutting a whole in half. In the retracted state, each cleaning strip 422 is housed in the receiving cavity 21. In the cleaning state, each cleaning strip 422 extends from the opening and opens away from the surrounding area for cleaning.

[0098] Specifically, the substrate 421 can adopt a rectangular plate structure. Two symmetrical mounting grooves are opened on the end face of the substrate 421. Elastic connectors, such as silicone springs or memory alloy springs, are fixed in the mounting grooves. Each cleaning strip 422 is embedded in the mounting groove and flexibly connected to the substrate 421 through the elastic connectors.

[0099] When the base 421 extends out of the accommodating cavity 21 along with the transmission component 412 (lead screw and nut transmission pair), the inner wall of the opening of the accommodating cavity 21 generates a radial extrusion force on the outer side of the cleaning strip 422, forcing at least two cleaning strips 422 to overcome the resistance of the elastic connector and open outward; when the base 421 retracts into the accommodating cavity 21, the extrusion force of the inner wall of the opening on the cleaning strip 422 disappears, the elastic connector resets, and pushes the cleaning strip 422 to converge inward, eventually being completely contained in the accommodating cavity 21.

[0100] It should be noted that the opening is tapered or stepped (e.g., the inner diameter gradually decreases from the inside of the accommodating cavity 21 to the outside), which can gradually increase the extrusion pressure and prevent the cleaning strip 422 from breaking due to excessive instantaneous force. The side of the cleaning strip 422 that contacts the opening should match the shape of the inner wall of the opening to ensure uniform contact during extrusion and avoid local stress concentration.

[0101] The opening angle of the cleaning strip 422 can be changed by adjusting the stiffness of the elastic connector, such as by replacing it with a silicone spring of different hardness.

[0102] Specifically, taking a full-color IPC as an example, when the full-color IPC detects a spider web in front of the lens window 110 (via the reflectivity sensor of the supplementary light 120 or a timed trigger), the controller sends an action command to the cleaning drive 411. The lead screw rotates under the drive of the motor, and the nut drives the base 421 to move along the inner wall of the receiving cavity 21 towards the opening. At this time, the inner wall of the opening gradually presses against the outer side of the cleaning strip 422, the elastic connector is compressed, and at least two cleaning strips 422 open outwards until the base 421 is completely extended out of the receiving cavity 21. When the base 421 stops moving, the IPC controls the wiper support arm 20 to swing, thereby driving the cleaning strip 422 to scan along the periphery of the window.

[0103] After cleaning is complete, the motor reverses the drive screw, and the nut causes the base 421 to retract into the receiving cavity 21. At this time, the squeezing force of the opening on the cleaning strip 422 disappears, the elastic connector resets, and every two cleaning strips 422 converge inwards, eventually being completely housed in the receiving cavity 21 to avoid exposure and scratches.

[0104] In this embodiment of the invention, through the elastic connector and the opening compression design of the accommodating cavity 21, the cleaning strip 422 can achieve automatic opening and closing without an additional drive source: it expands when extended and elastically returns to its original position when retracted. This design requires only one set of transmission components 412 (screw and nut transmission pair) to complete the driving and coordinated opening and closing actions of the cleaning strip 422, reducing the number of parts (eliminating the need for a separate opening and closing motor) and lowering the failure rate.

[0105] Continue reading Figure 2 In some embodiments of this utility model, a sealing element 50 is provided at the opening position, and the sealing element 50 is used to close the opening; wherein, at least one scratch 51 is provided through the sealing element 50, and when the cleaning strip 422 contacts the sealing element 50, the edge of the scratch 51 is used to peel off the cobwebs adhering to the surface of the cleaning strip 422.

[0106] The sealing element 50 can be made of silicone rubber or EPDM rubber. The sealing element 50 can be installed in an embedded manner at the edge of the opening of the receiving cavity 21, that is, an annular groove is opened in the inner wall of the opening of the receiving cavity 21, and the sealing element 50 is embedded in the sealing element 50. Multiple oblique scratches 51 are processed on the surface of the sealing element 50 (the part in contact with the cleaning strip 422).

[0107] When the cleaning strip 422 retracts into the receiving cavity 21 along with the substrate 421, the cobweb on the surface of the cleaning strip 422 will be peeled off by the edge of the scratch 51. When using a silicone rubber cleaning strip 422, because silicone rubber is relatively soft, the beveled surface of the scratch 51 will embed into the contact interface between the cobweb and the cleaning strip 422, tearing the cobweb fibers through friction and adhering them to the sealing surface. When using a Teflon cleaning strip 422, due to the low surface energy of Teflon, the cobweb adhesion is weak, and the beveled pressure of the scratch 51 can directly scrape the cobweb off to the sealing surface, avoiding residue.

[0108] As the cleaning strip 422 extends from the receiving cavity 21, its tip passes over the scratch 51 of the seal 50 again. At this time, a small amount of new cobwebs may have adhered to the surface of the cleaning strip 422. The edge of the scratch 51 performs a second cleaning of the cleaning strip 422 to ensure that there are no debris on the surface of the cleaning strip 422 when it extends, thereby improving the efficiency of subsequent cleaning.

[0109] In this embodiment of the invention, the oblique scratches 51 on the sealing element 50 actively peel away surface cobwebs during the extension and retraction of the cleaning strip 422, ensuring that the cleaning strip 422 is always used in a clean state. The sealing element 50 serves both to seal and protect the accommodating cavity 21 and to remove cobwebs through the scratches 51, eliminating the need for an additional independent cleaning mechanism (such as a brush or scraper). In essence, the sealing element 50 functions as both a sealant for the opening of the accommodating cavity 21 and a cobweb remover, achieving automatic cleaning of the cobwebs through contact and friction with the cleaning strip 422.

[0110] This embodiment of the utility model uses a full-color IPC as an example to illustrate the automatic cleaning process of the cobwebs around the lens window 110:

[0111] When cobwebs are detected around the viewing window (e.g., by monitoring changes in the reflective intensity of the supplementary light 120 via a light sensor, or by a timed trigger), that is, when the IPC detects cobwebs obstructing the viewing window via the supplementary light 120 reflective sensor (or a visual algorithm), it triggers the cobweb removal mode or the device automatically starts the cleaning program according to a preset cycle (e.g., every 2 hours). At this time:

[0112] The second drive unit 13 receives the PWM control signal from the controller (IPC motherboard) and drives the wiper support arm 20 to swing initially along the ZX plane (i.e., the second plane), lifting the wiper support arm 20 from the initial position (dormant position) close to the window glass, reserving space for subsequent cleaning actions.

[0113] When the wiper support arm 20 swings into place, the cleaning drive component 41 (such as a miniature rotary motor with a lead screw and nut) is activated: the motor output shaft rotates, driving the lead screw to rotate synchronously, the nut moves linearly along the lead screw axis, and the base 421 of the cleaning body 42 moves along the inner wall of the accommodating cavity 21 toward the opening position, so that the cleaning strip 422 extends out of the opening until the front end of the cleaning strip 422 touches the limit fixing point (such as the opening stop or sensor trigger). At this time, the elastic connector (silicone spring) is compressed, and every two cleaning strips 422 open outward due to the squeezing of the opening (opening angle 180°), forming a larger cleaning coverage area.

[0114] To expand the cleaning range, the first drive component 11 (such as a stepper motor or servo motor) is activated, driving the wiper support arm 20 to rotate. The rotation trajectory of the wiper support arm 20 complements the swing plane of the ZX plane, covering the upper and lower edges and side corner areas of the window. Figure 3 As shown.

[0115] Essentially, the second drive component 13 works in conjunction with the first drive component 11 to achieve a combined swinging and rotating motion: the second drive component 13 controls the wiper support arm 20 to swing back and forth in the ZX plane (the second plane), covering the main viewing area of ​​the window; the first drive component 11 synchronously drives the support arm to rotate in the ZY plane (the first plane), causing the cleaning body 42 (the cleaning strip 422 in the open state) to sweep across the edge of the window and the non-covered area of ​​the wiper blade 30, such as... Figure 3 As shown.

[0116] After the cobweb cleaning is completed, the cleaning drive component 411 drives the lead screw to retract the nut, and the cleaning body 42 retracts from the limit fixing point into its receiving position. During the retraction process, the outer surface of the cleaning strip 422 contacts the edge of the scratch 51 on the seal 50 of the opening. The scratch 51 on the seal peels off the cobweb residue on the surface of the cleaning strip 422 and adheres it to the surface of the seal. The elastic connector (silicone spring) resets, pushing each pair of cleaning strips 422 to re-converge and be completely stored in the receiving cavity 21.

[0117] After the cleaning unit 42 is fully retracted, the second drive component 13 drives the wiper support arm 20 to swing along the ZX plane again, slowly retracting the wiper support arm 20 from the raised position until the wiper blade 30 is in close contact with the window glass, so as to avoid scratching the glass due to shaking.

[0118] Finally, the first drive component 11 stops rotating, the wiper support arm 20 returns to its initial angle, the second drive component 13 locks the output shaft, the entire cleaning process ends, the device returns to standby mode, and waits for the next trigger.

[0119] The wiper assembly 200 provided in this embodiment of the present invention achieves fully automated cleaning of spider webs. The division of labor and cooperation among the various driving components (first, first driving component 11, cleaning driving component 411), combined with the self-cleaning function of the sealing component 50, ensures comprehensive cleaning coverage, cleaning efficiency and long-term reliability, effectively solving the problem of imaging failure caused by spider web obstruction in high-altitude installation of full-color IPCs.

[0120] Figure 6 This is a schematic diagram of the structure of the camera assembly provided in an embodiment of the present invention.

[0121] See Figure 6 The present invention also provides a camera assembly, which includes a housing 100 and a wiper assembly 200 as described above. The housing 100 is provided with a lens window 110 and a fill light 120. The fill light 120 is located on one side of the lens window 110, and the wiper assembly 200 is located on the housing 100.

[0122] The camera assembly provided in this embodiment of the present invention includes the aforementioned wiper assembly 200, and therefore possesses all the advantages of the aforementioned camera assembly. It not only has water removal or dust removal functions, but also additionally has a cobweb removal function.

[0123] This utility model also provides a network camera, including an image acquisition module, a network communication module, and the aforementioned camera component. The image acquisition module and the network communication module are located within the camera component. The image acquisition module is used to acquire image information. The network communication module interacts with the backend via a network.

[0124] The network camera provided in this embodiment of the utility model includes the aforementioned wiper assembly 200, and therefore possesses all the advantages of the aforementioned camera assembly. It not only has water removal or dust removal functions, but also additionally has a cobweb removal function.

[0125] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A wiper assembly characterized in that, include: Driver components, including: A first drive component is used to be mounted to a camera assembly. The output shaft of the first drive component passes through the housing of the camera assembly and extends to the outside of the camera assembly. A support member is connected to an output shaft extending to the outside of the camera assembly; A second driving component is disposed on the carrier member; A wiper support arm is connected to the second driving component. The wiper support arm swings along a first plane under the driving action of the first driving component, and swings along a second plane under the driving action of the second driving component. The second plane and the first plane are set at an angle to each other. Wiper blades are disposed on the outer side wall of the wiper support arm.

2. The wiper assembly of claim 1, wherein, It also includes a web cleaning component, which comprises: A cleaning drive component is provided on the wiper support arm; A cleaning body is connected to the output end of the cleaning drive component and is adapted to move in a straight line under the action of the cleaning drive component to switch between a retracted state and a cleaning state. In the retracted state, the cleaning body is located inside the wiper support arm; in the cleaning state, at least a portion of the cleaning body extends out of the wiper support arm to perform cleaning.

3. The wiper assembly of claim 2, wherein, The wiper support arm has an internal cavity that extends along the length of the wiper support arm. The wiper support arm has a first end and a second end that are disposed opposite to each other. The first end is connected to the second drive component, and the second end is provided with an opening that communicates with the receiving cavity. The cleaning drive component and the cleaning body are both located in the accommodating cavity. In the cleaning state, at least a portion of the cleaning body extends out from the opening to perform cleaning.

4. The wiper assembly of claim 3, wherein, The cleaning drive component includes: A cleaning drive component is fixedly disposed in the accommodating cavity; A transmission component is rotatably disposed in the accommodating cavity, and the transmission component is connected to the output end of the cleaning drive component; At least a portion of the cleaning body is in transmission cooperation with the transmission component, and is adapted to perform linear reciprocating motion with the transmission component.

5. The wiper assembly of claim 4, wherein, The transmission component includes: The lead screw is mounted on the inner wall of the accommodating cavity at both ends via bearing components; The nut engages with the lead screw drive. At least a portion of the cleaning body is connected to the nut, and the side of the corresponding cleaning body facing away from the nut abuts against the inner wall of the receiving cavity.

6. The wiper assembly of claim 4, wherein, The cleaning body includes: The base material is in transmission cooperation with the transmission component; At least two cleaning strips are provided, with each pair of cleaning strips spaced apart on the end face of the substrate, and each pair of cleaning strips are symmetrically arranged about the central axis of the substrate. In the stored state, each of the cleaning strips is stored in the receiving cavity; in the cleaning state, each of the cleaning strips extends out of the opening and is opened away from the perimeter for cleaning.

7. The wiper assembly of claim 6, wherein, A sealing element is provided at the opening, and the sealing element is used to close the opening; The seal has at least one through-scratch. When the cleaning strip comes into contact with the seal, the edges of the scratches are used to peel off the cobwebs adhering to the surface of the cleaning strip.

8. The wiper assembly of any one of claims 2 to 6, wherein, The cleaning body includes a silicone rubber cleaning body or a Teflon cleaning body.

9. A camera assembly, characterized by include: The housing has a lens window and a fill light, with the fill light located on one side of the lens window; And a wiper assembly including any one of claims 1 to 8, the wiper assembly being disposed on the housing.

10. A network camera, characterized by The camera assembly includes an image acquisition module, a network communication module, and the camera component as described in claim 9, wherein the image acquisition module and the network communication module are both located inside the camera component. The image acquisition module is used to acquire image information; The network communication module interacts with the backend via the network.

Images