WO2023124010A1 - 除尘摄像机 - Google Patents

除尘摄像机 Download PDF

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Publication number
WO2023124010A1
WO2023124010A1 PCT/CN2022/105403 CN2022105403W WO2023124010A1 WO 2023124010 A1 WO2023124010 A1 WO 2023124010A1 CN 2022105403 W CN2022105403 W CN 2022105403W WO 2023124010 A1 WO2023124010 A1 WO 2023124010A1
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WIPO (PCT)
Prior art keywords
wiper
assembly
lower cover
wiper strip
dust removal
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Ceased
Application number
PCT/CN2022/105403
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English (en)
French (fr)
Inventor
王雷雷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hangzhou Hikvision Digital Technology Co Ltd
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Hangzhou Hikvision Digital Technology Co Ltd
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Publication date
Application filed by Hangzhou Hikvision Digital Technology Co Ltd filed Critical Hangzhou Hikvision Digital Technology Co Ltd
Publication of WO2023124010A1 publication Critical patent/WO2023124010A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/52—Elements optimising image sensor operation, e.g. for electromagnetic interference [EMI] protection or temperature control by heat transfer or cooling elements

Definitions

  • the disclosure relates to the field of imaging technology, in particular to a dust removal camera.
  • the camera needs to have a dust removal function.
  • the present camera dust removal structure is only applicable to the situation that the glass is a plane shape.
  • the linear wiper is driven by the wiper motor to remove the dirt on the flat glass.
  • This technical solution is only applicable to cameras with a plane window, such as a barrel camera without a PT adjustment function.
  • the purpose of the present disclosure is to provide a technical solution to realize dust removal for cameras with spherical or hemispherical windows.
  • the dust removal camera includes:
  • a lower cover assembly which is installed to the housing assembly and has a transparent window through which the lens assembly acquires image information
  • a wiper assembly mounted to the housing assembly having a wiper strip
  • the transparent window and the wiper strip are arranged to be relatively rotatable, and the surface of the transparent window is cleaned by the wiper strip sweeping across the surface of the transparent window.
  • the lower cover assembly is configured to rotate integrally with the lens assembly around the first axis, and the circumferential position of the wiper assembly is fixed in the circumferential direction around the first axis;
  • the circumferential position of the lower cover assembly around the first axis is divided into an observation circumferential position area and a cleaning circumferential position area, and in the cleaning circumferential position area, the lower cover assembly is facing the wiper strip; In the observing circumferential position area, the lower cover assembly is staggered from the wiper strip.
  • the transparent window is a surface of revolution.
  • the lower cover assembly includes a hemispherical lower cover, and the transparent window is fixedly arranged on the lower cover and only occupies a partial surface of the lower cover.
  • the wiper strip is configured to be movable relative to the housing assembly, so as to switch between a contact state and a separation state, and in the contact state, the wiper strip contacts the transparent window; In the leaving state, the wiper strip is out of contact with the transparent window; or, the wiper strip is set to be able to move relative to the housing assembly, so that the contact is tight while maintaining contact with the lower cover assembly Adjust the degree.
  • the wiper assembly includes a wiper head, the wiper head is pivotally connected to the housing assembly through a swing shaft, the wiper strip is mounted on the wiper head, and the wiper head is rotated by the wiper head.
  • the pivotal movement of the swing shaft realizes switching of the wiper strip between the contact state and the separation state, or adjusts the tightness of the contact of the wiper strip while maintaining contact with the lower cover assembly.
  • the wiper assembly further includes a push rod connected to the wiper head for driving the wiper head to pivot around the swing shaft,
  • the push rod is elastically loaded by a spring, and the elastic force exerted by the spring on the push rod tends to keep the wiper strip in the separated state.
  • the wiper assembly further includes a cam, and the cam is driven by a driving motor so that the push rod moves against the elastic force of the spring, so that the wiper strip is in the contact state.
  • the driving motor is simultaneously used to drive the lower cover assembly to rotate around the first axis, and the rotation speed and direction of the cam are the same as the rotation speed and direction of the lower cover assembly.
  • the wiper assembly further includes a wiper fixing sheet metal, the wiper strip is fixedly mounted on the wiper fixing sheet metal, and the wiper fixing sheet metal is rotatably mounted to the wiper head through a floating shaft, and can rotate around The floating shaft swings,
  • the floating rotating shaft is arranged at the middle of the lengthwise direction of the wiper strip.
  • the ratio of the force arm L1 of the push rod to the wiper head to the force arm L2 of the wiper fixing sheet metal to the wiper head is less than or equal to 1:3.
  • the dust removal camera of the present disclosure cleans the surface of the transparent window through the relative rotation between the transparent window and the wiper strip, has a simple structure, and can effectively clean the curved transparent window.
  • FIG. 1 is a schematic diagram of a dust removal camera according to an embodiment of the present disclosure.
  • Fig. 2 is a schematic perspective view of the dust removal camera shown in Fig. 1 .
  • Fig. 3 is a schematic bottom view of the dust removal camera shown in Fig. 1 .
  • Figure 4 is a schematic diagram of the stroke-rotation angle of the cam.
  • FIG. 5 is a schematic diagram of the wiper device of the dust removal camera shown in FIG. 1 .
  • Fig. 6 is a sectional view along A-A direction in Fig. 5 .
  • a “component” may be a single part or a combination of a plurality of parts.
  • a video camera refers to an instrument or device capable of taking pictures, especially an instrument for monitoring and taking pictures.
  • a dust removal camera refers to a camera with a dust removal function.
  • the dust removal camera in the embodiments of the present disclosure may be an intrinsically safe dust removal camera.
  • Intrinsically safe type refers to an explosion-proof type of electrical equipment, which limits the spark or thermal effect energy that may be generated inside the equipment and the connecting wires exposed to potentially explosive atmospheres to a level that cannot cause ignition.
  • a dust removal camera includes: a housing assembly 3 , a lower cover assembly 2 and a wiper assembly 1 .
  • the housing assembly 3 is the installation base of the dust removal camera, and can be installed and fixed to ceilings, columns, table tops and other positions in any appropriate manner.
  • the housing assembly 3 can adopt any appropriate form, structure and material, and can also adopt any appropriate installation method. These are all within the protection scope of the present disclosure.
  • housing assembly 3 includes an outer housing 31 .
  • the outer case 31 is fixedly mounted to a ceiling or the like by screws.
  • the lens assembly 4 , the lower cover assembly 2 , the wiper assembly 1 and the like are all mounted on the housing assembly 3 directly or indirectly.
  • the lens assembly 4 can adopt any suitable form and structure.
  • the lens assembly 4 includes an imaging chip, a lens, and the like.
  • the lower cover assembly 2 is mounted on the housing assembly 3 and has a transparent window 22 through which the lens assembly 4 acquires image information.
  • the lower cover assembly 2 can also be called a transparent cover assembly, and the lower cover 21 can also be called a transparent cover.
  • the lower cover assembly 2 includes a transparent window 22 .
  • the transparent window 22 is a rotating window, which can rotate around the first axis O (see FIG. 3 ) driven by the rotating motor.
  • the first axis O is a straight line extending vertically.
  • the transparent window 22 and the wiper strip 11 are arranged to be relatively rotatable, and the surface of the transparent window 22 is cleaned by the wiper strip 11 sweeping over the surface of the transparent window 22 .
  • the dust removal camera includes a housing assembly 3 , a lower cover assembly 2 , a lens assembly 4 and a wiper assembly 1 .
  • the lower cover assembly 2 is mounted to the housing assembly 3 and has a lower cover 21 and a transparent window 22 .
  • the lower cover assembly 2 is configured to be able to rotate around the axis of the lower cover relative to the housing assembly 3 under the drive of the motor.
  • the lens assembly 4 obtains image information through the transparent window 22 , the lens assembly 4 is installed on the lower cover assembly 2 , and rotates around the axis of the lower cover together with the lower cover assembly 2 .
  • the wiper assembly 1 is installed to the housing assembly 3, and has a wiper strip 11, the shape of the inner surface of the wiper strip 11 is adapted to the shape of the outer surface of the window glass, so that the inner surface of the wiper strip 11 is suitable for fitting the outer surface of the window glass , wherein the wiper assembly 1 is mounted to the housing assembly 3, and the circumferential position of the wiper assembly 1 is fixed in the circumferential direction around the axis of the lower cover. The foreign matter is detached from the window glass under the action of the tangential force exerted by the wiper strip.
  • the dust removal camera in the embodiment of the present disclosure cleans the surface of the transparent window 22 through the relative rotation between the wiper strip 11 , has a simple structure, and can effectively clean curved transparent windows.
  • the lower cover assembly 2 includes a lower cover 21 on which the transparent window 22 is fixed.
  • the rotating window and the lens assembly 4 can be set to rotate together, and the wiper strip 11 is set not to rotate around the rotating axis of the rotating window. , set in this way, when the rotating window rotates together with the lens assembly 4, the wiper strip 11 can sweep the surface of the rotating window to clean the surface of the rotating window.
  • the main body of the lower cover 21 can be made of opaque metal to improve safety performance.
  • a supplementary light window 23 is also provided. If necessary, it can also be set to clean the supplementary light window 23, which is also within the protection scope of the present disclosure.
  • the rotating window and the lens assembly can be set to rotate together, or can be set to rotate relative to each other.
  • the wiper assembly 1 is mounted to a housing assembly 3 , which has a wiper strip 11 .
  • the part where the wiper strip 11 cooperates with the rotating window has a shape that matches or adapts to the contour of the rotating window, so as to clean the rotating window well.
  • the rotating window is convex and the wiper strip is concave, both of which have the same arc radius.
  • the wiper strip is made of rubber and other materials, and has proper elasticity and coefficient of friction.
  • the rotating window rotates with the lens assembly. That is, the lens assembly rotates integrally with the rotating window.
  • the rotating window rotates together with the lens assembly.
  • the rotating window and the lens assembly rotate together, and the change of the observation angle is realized through rotation; in the dust removal mode, the rotating window also rotates together with the lens assembly, and the rotation of the rotating window relative to the wiper is realized through rotation. movement to clean the window surface.
  • the rotating window rotates relative to the lens assembly.
  • the lens assembly rotates integrally, but the rotating window does not rotate, and the observation angle can be changed through rotation.
  • the lens assembly does not rotate as a whole, but the rotating window rotates. Through the rotation, the rotating window moves relative to the wiper strip, so as to clean the surface of the window.
  • the rotating window is a rotary window, the outer surface of which is at least partially formed by a generatrix rotating around the axis of rotation.
  • the outer surface of the rotating window is mainly formed by the rotation of a generatrix around the axis of rotation.
  • the rotation axis is parallel to the first axis, and the generatrix can be an arc, a straight line, or other curves, or a combination of arcs, straight lines, or other curves.
  • the rotating window is hemispherical.
  • the rotating window is hemispherical, including that the rotating window is substantially hemispherical, for example slightly more spherical than the hemispherical, or slightly less spherical.
  • the lower cover assembly 2 is configured to rotate integrally with the lens assembly 4 around the first axis, and in the circumferential direction around the first axis, the circumferential position of the wiper assembly 1 is fixed (see FIG. 3 ).
  • the horizontal rotation motor drives the lower rotating body to reciprocate through gear transmission
  • the rotating body includes the inner cover and the lower cover assembly 2
  • the lower cover assembly 2 contains a hemispherical lower cover and spherical glass (transparent window)
  • the lower cover and the lower cover assembly 2 The spherical glass is sealed and fixed by glue.
  • the outer surface of the spherical glass is on the same spherical surface as the outer surface of the lower cover, or protrudes slightly from the outer surface of the lower cover.
  • the position where the wiper assembly 1 or the wiper strip 11 is in the middle of the rotating window in the circumferential direction is 180°, and the position 0° opposite to it is the position indicated by the PO line. That is to say, this position is marked as the 180-degree position of the lower cover assembly 2 , and it can be understood that this position can also be defined as a position of other degrees, for example, this position can be defined as a 0-degree position.
  • the areas on the upper and lower sides of the 180° position shown in FIG. 3 are clean circumferential position areas. Clean the circumferential position area, that is, the area within the two lines MO and NO. In FIG. 4, S is the stroke of the cam, and clean the area between the circumferential position areas B1 and B2.
  • the size of the central angle corresponding to the cleaning circumferential position area can be set as required.
  • the central angle of the cleaning peripheral position area is equal to or slightly larger than the central angle of the transparent window.
  • the lower cover assembly 2 In the cleaning peripheral position area, the lower cover assembly 2 is facing the wiper strip 11 and can be cleaned. In the observation circumferential position area, the lower cover assembly 2 and the wiper strip 11 are staggered, which is convenient for video monitoring. In other words, the circumferential position of the lower cover assembly 2 around the first axis is divided into an observation circumferential position area and a cleaning circumferential position area.
  • the cleaning of the peripheral position area can also include the supplementary light window.
  • the transparent window 22 is a curved surface of revolution. More specifically, the transparent window 22 is part of a curved surface of revolution.
  • the lower cover assembly 2 includes a hemispherical lower cover 21 , and the transparent window 22 is fixedly arranged on the lower cover 21 and only occupies a part of the surface of the lower cover 21 .
  • the wiper strip 11 is configured to be movable relative to the housing assembly 3, thereby switching between a contact state and a separation state. In the contact state, the wiper strip 11 contacts the transparent window 22; in the separation state, The wiper strip 11 is out of contact with the transparent window 22 .
  • the wiper strip 11 is configured to be movable relative to the housing assembly 3 , so that the contact tightness of the wiper strip 11 can be adjusted while maintaining contact with the lower cover assembly 2 .
  • the wiper assembly 1 includes a roller 18 , a push rod 15 , a spring 16 , a wiper head 14 , a floating shaft 13 (also called a wiper head shaft), a wiper fixing plate 12 and a wiper strip 11 .
  • the wiper strip 11 and the wiper fixing sheet metal 12 are relatively fixed and connected as one to form a wiper strip assembly.
  • the wiper strip assembly floats around the floating rotating shaft 13 to ensure the effective fit of the wiper strip 11 and the curved glass to achieve a good dust removal effect.
  • “floating” in the present disclosure means that the wiper strip 11 and the wiper fixing sheet metal 12 can swing around the floating shaft 13 to adapt to the shape of the curved glass and ensure the effective fit between the wiper strip 11 and the curved glass .
  • the wiper fixing sheet metal 12 is rotatably connected to the wiper head 14 through the wiper head rotating shaft 13 . That is to say, the wiper fixing sheet metal 12 can freely rotate relative to the wiper head 14 .
  • the rotation axis (second rotation axis) of the wiper fixing sheet metal 12 is perpendicular to the first rotation axis.
  • the spring 16 is a compression spring.
  • the spring 16 pushes the push rod 15 to move to realize the separation of the wiper strip and the window.
  • the spring 16 is in a compressed state.
  • the spring 16 pushes the push rod 15 to move, so that the wiper strip keeps in contact with the window but the contact degree becomes weaker.
  • the lower cover assembly 2 further includes an inner cover 24 , and the inner cover 24 is fixedly connected with the lower cover 21 , such as integrally formed, or fixedly connected by screws.
  • the outer periphery of the inner cover 24 is provided with a cam surface 241 . While rotating around the axis of the lower cover, the cam surface 214 can push the push rod 15 to overcome the elastic force exerted by the spring 16, so that the wiper head 14 pivots around the swing shaft 51, and then has a tendency to move toward the direction of the window.
  • the cam surface 241 can push the push rod 15 directly, or push the push rod 15 indirectly.
  • the wiper assembly 1 further includes a roller 18 .
  • the roller rotating shaft 17 of the roller 18 is connected with the push rod 15 as a whole.
  • the roller 18 can rotate around the roller shaft 17 .
  • the roller shaft 17 is parallel to the axis of the lower cover assembly 2 . That is, the cam surface 241 indirectly pushes the push rod 15 through the roller 18 and the roller shaft 17 .
  • Such a solution is beneficial to improving the compactness of the overall structure and making full use of the space in the camera.
  • the roller 18 is in rolling contact with the cam surface 241 of the inner cover 24 , and moves radially under the action of the cam surface 241 to push the push rod 15 .
  • the cam surface 241 pushes the push rod 15 out, so that the wiper strip and the transparent window 22 fit or fit tightly Fitting:
  • the cam surface 241 allows the push rod 15 to retreat under the action of the spring 16, so that the wiper strip 11 is separated from or attached to the transparent window 22 weakened.
  • the wiper head 14 is pivotally connected to the housing assembly 3 through a swing shaft 51, the wiper strip 11 is installed on the wiper head 14, and the wiper head 14 rotates around the swing shaft 51.
  • the pivotal movement of the wiper strip 11 realizes switching between the contact state and the separation state, or makes the wiper strip 11 adjust the tightness of the contact while maintaining contact with the lower cover assembly 2 .
  • the wiper assembly 1 further includes a push rod 15 connected to the wiper head 14 for driving the wiper head 14 to pivot around the swing shaft 51 ,
  • the push rod 15 is elastically loaded by a spring 16 , and the elastic force exerted by the spring 16 on the push rod 15 tends to keep the wiper strip 11 in a separated state or a state of less contact.
  • the camera is provided with a cam structure, while rotating around the central axis, the cam surface 241 can push the push rod 15 to overcome the elastic force exerted by the spring 16, so that the wiper assembly moves back and forth to realize the curved wiper Fitted with spherical glass, it has the effect of glass dust removal.
  • the camera When the camera needs to remove dust, it enters the wiper dust removal mode, that is, controls the wiper motor, drives the glass area on the lower cover assembly to fit the wiper strip, and realizes dust removal through relative movement.
  • the design of the cam satisfies that in the monitoring mode, the wiper strip and the lower cover are separated.
  • the ejection of the cam drives the wiper to automatically fit the glass. After the fit, the wiper does not move, and the ball rotates by itself to achieve dust removal.
  • the wiper assembly 1 further includes a roller 18 driven by a driving motor so that the push rod 15 moves against the elastic force of the spring 16 to make the wiper strip 11 in a contact state.
  • the roller 18 can be configured as a cam, driven by a separate motor, thereby pushing the push rod 15 .
  • the wiper assembly 1 further includes a wiper fixing sheet metal 12, the wiper strip 11 is fixedly mounted on the wiper fixing sheet metal 12, and the wiper fixing sheet metal 12 is rotatably mounted to the wiper head 14 through a floating rotating shaft 13, and can rotate around the floating Rotating shaft 13 swings,
  • the floating rotating shaft 13 is arranged at the middle of the lengthwise direction of the wiper strip 11 .
  • the ratio of the force arm L1 of the push rod 15 to the wiper head 14 to the force arm L2 of the wiper fixing sheet metal 12 to the wiper head 14 is less than or equal to 1:3.
  • L2 substantially corresponds to the distance between the axis of the floating shaft 13 and the axis of the swing shaft 51 .
  • L1 substantially corresponds to the distance between the axis of the swing shaft 51 and the straight line defined by the moving direction of the push rod.
  • the wiper assembly 1 is connected to the outer casing 31 through a connecting plate 19 , and one end of the connecting plate 19 is fixedly connected to the outer casing 31 through a threaded connection.
  • the connection plate 19 is arranged in a cantilever manner, so that the connection plate 19 can have a certain degree of elasticity to allow certain manufacturing errors or installation errors.
  • a limit adjusting screw 191 is provided on the connecting plate 19 .
  • the limit adjustment screw 191 can prevent the cam surface from applying excessive force to the roller, thereby preventing the wiper strip from acting on the glass window with excessive force.
  • the moving direction of the push rod 15 is set to be perpendicular to the axis of the lower cover. That is, the putter moves horizontally.
  • the push rod moves horizontally and radially.
  • the push rod passes through the horizontal perforation provided on the connecting plate, and one end (left end) is integrally connected with the roller rotating shaft 17, and the other end (right end) is connected with the wiper head 14 at the connecting shaft 52.
  • the push rod 15 can be hinged with the wiper head, and there is a gap at the hinge. The head 14 moves up and down in a small amount, so that the push rod can be avoided from being stuck.
  • the connecting hole at the connecting shaft 52 can be set as an oblong hole, so as to allow the right end of the push rod 15 to perform a slight movement relative to the connecting shaft 52.
  • the oblong hole can be set at the at the right end.
  • the dust removal camera of the present disclosure cleans the surface of the transparent window through the relative rotation between the transparent window and the wiper strip, has a simple structure, and can effectively clean the curved transparent window.
  • the structure of the embodiment of the present disclosure is that the arc-shaped wiper and the arc-shaped spherical surface rotate each other to remove dust, the arc-shaped wiper is separated and bonded through the cam structure, and the arc-shaped wiper assembly and the fixed wiper head are floating and fixed, which can effectively eliminate assembly tolerances and realize The effective bonding of the wiper and the glass, this structure can effectively solve the problem of arc bonding and meet the needs of customers for dust removal in mines.
  • the hemispherical wiper structure of the embodiment of the present disclosure can effectively solve the situation of dirty hemispherical or spherical camera windows.
  • the wiper strip of the new solution does not move in the wiper mode, and the horizontal motor drives the sphere to reciprocate horizontally to clean the surface of the curved glass.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Studio Devices (AREA)
  • Camera Bodies And Camera Details Or Accessories (AREA)

Abstract

本公开公开了一种除尘摄像机。所述除尘摄像机包括：壳体组件(3)，其上安装有镜头组件(4)；下盖组件(2)，其安装至所述壳体组件(3)，且具有透明视窗(22)，所述镜头组件(4)透过所述透明视窗(22)获取图像信息；以及雨刷组件(1)，其安装至所述壳体组件(3)，其具有雨刷条(11)；其中，所述透明视窗(22)和雨刷条(11)设置为能够相对转动，通过所述雨刷条(11)扫过所述透明视窗(22)的表面，对所述透明视窗(22)的表面进行清洁。

Description

除尘摄像机
本申请要求于2021年12月30日提交中国专利局、申请号为202111649627.6发明名称为“一种除尘摄像机”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开涉及成像技术领域，特别是涉及一种除尘摄像机。
背景技术
本部分提供的仅仅是与本公开相关的背景信息，其并不必然是现有技术。
在某些使用场景下，需要摄像仪具有除尘功能。目前的摄像机除尘结构仅仅适用于是玻璃为平面形状的情形。通过雨刷电机带动直线型雨刷器清除平面玻璃上的污垢。此种技术方案仅仅适用于具有平面视窗的摄像仪，例如适用于无PT调节功能的筒型摄像机。
发明内容
本公开的目的在于提供一种技术方案来实现对于带有球形、半球型视窗的摄像仪的除尘。
为实现上述目的，本公开提供一种除尘摄像机，所述除尘摄像机包括：
壳体组件，其上安装有镜头组件；
下盖组件，其安装至所述壳体组件，且具有透明视窗，所述镜头组件透过所述透明视窗获取图像信息；以及
雨刷组件，其安装至所述壳体组件，其具有雨刷条；
其中，所述透明视窗和雨刷条设置为能够相对转动，通过所述雨刷条扫过所述透明视窗的表面，对所述透明视窗的表面进行清洁。
在一些实施例中，所述下盖组件设置为随所述镜头组件一体地绕着第一轴线转动，在绕着第一轴线的周向上，所述雨刷组件周向位置固定；
所述下盖组件绕着第一轴线的周向位置分为观测周向位置区域和清洁周向位置区域，在所述清洁周向位置区域，所述下盖组件正对所述雨刷条；在所述观测周向位置区域，所述下盖组件与所述雨刷条错开。
在一些实施例中，所述透明视窗为回转曲面。
在一些实施例中，所述下盖组件包括半球形的下盖，所述透明视窗固定设置在所述下盖上，且仅仅占据所述下盖的局部表面。
在一些实施例中，所述雨刷条设置为能够相对于所述壳体组件运动，从而在接接触状 态与离开状态之间切换，在接触状态下，所述雨刷条接触所述透明视窗；在离开状态下，所述雨刷条脱离与所述透明视窗的接触；或者，所述雨刷条设置为能够相对于所述壳体组件运动，从而在保持与下盖组件接触的状态下对接触的紧密程度进行调整。
在一些实施例中，所述雨刷组件包括雨刷头，所述雨刷头通过摆动转轴枢转地连接至所述壳体组件，所述雨刷条安装在所述雨刷头上，通过所述雨刷头绕所述摆动转轴的枢转运动，实现所述雨刷条在接接触状态与离开状态之间切换，或使所述雨刷条在保持与下盖组件接触的状态下对接触的紧密程度进行调整。
在一些实施例中，所述雨刷组件还包括推杆，所述推杆与所述雨刷头连接，用于驱动所述雨刷头绕着所述摆动转轴枢转，
其中，所述推杆由弹簧弹性加载，所述弹簧对推杆施加的弹性力使得所述雨刷条趋于保持在所述离开状态。
在一些实施例中，所述雨刷组件还包括凸轮，所述凸轮由驱动电机驱动，而使得所述推杆克服所述弹簧的弹性力运动，使所述雨刷条处于所述接触状态。
在一些实施例中，所述驱动电机同时用于驱动所述下盖组件绕着第一轴线转动，且所述凸轮的旋转速度与方向与所述下盖组件的旋转速度与方向相同。
在一些实施例中，所述雨刷组件还包括雨刷固定钣金，所述雨刷条固定安装在雨刷固定钣金上，所述雨刷固定钣金通过浮动转轴旋转安装至所述雨刷头，能够绕着所述浮动转轴摆动，
其中，所述浮动转轴设置在所述雨刷条的长度方向的中部处。
在一些实施例中，所述推杆对雨刷头的作用力臂L1与所述雨刷固定钣金对雨刷头的作用力臂L2之比，小于等于1:3。
本公开的除尘摄像机通过透明视窗和雨刷条之间的相对转动来对透明视窗的表面进行清洁，结构简单，且能够对曲面型的透明视窗进行有效清洁。
附图说明
为了更清楚地说明本公开实施例或相关技术中的技术方案，下面将对实施例或相关技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。
图1是根据本公开一实施例的除尘摄像机的示意图。
图2是图1所示除尘摄像机的示意性立体图。
图3是图1所示除尘摄像机的示意性仰视图。
图4是凸轮的行程-转角示意图。
图5是图1所示除尘摄像机的雨刷装置的示意图。
图6是图5中沿A-A向的剖视图。
附图标记：
1 雨刷组件 18 滚轮
2 下盖组件 19 连接板
3 壳体组件 21 下盖
4 镜头组件 22 透明视窗
11 雨刷条 23 补光窗
12 雨刷固定钣金 24 内罩
13 浮动转轴 241 凸轮表面
14 雨刷头 31 外壳体
15 推杆 51 摆动转轴
16 弹簧 52 连接轴
17 滚轮转轴 191 限位调节螺钉
具体实施方式
在附图中，使用相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面结合附图对本公开的实施例进行详细说明。
在本公开的描述中，术语“中心”、“纵向”、“横向”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开保护范围的限制。
在本公开中，“组件”可以是单个零件，也可以是多个零件组合在一起。
摄像仪是指能够进行摄像的仪器或设备，尤其是进行监控摄像的仪器。除尘摄像机是指具有除尘功能的摄像仪。本公开实施例中的除尘摄像机可以是本安型除尘摄像机。本安 型是指电气设备的一种防爆型式，它将设备内部和暴露于潜在爆炸性环境的连接导线可能产生的电火花或热效应能量限制在不能产生点燃的水平。
如图1至图6所示，根据本公开一实施例的除尘摄像机包括：壳体组件3、下盖组件2和雨刷组件1。
壳体组件3是除尘摄像机的安装基座，能够以任何适当的方式安装固定至天花板、立柱、台面等部位。壳体组件3可以采用任何适当的形式、结构和材质，也可以采用任何适当的安装方式。这都在本公开的保护范围之内。在图示实施例中，壳体组件3包括外壳体31。外壳体31通过螺钉固定安装至天花板等。
镜头组件4、下盖组件2、雨刷组件1等都直接或间接地安装在壳体组件3上。镜头组件4可以采用任何适当的形式、结构。例如，镜头组件4包括成像芯片及镜头等。
下盖组件2安装至壳体组件3，且具有透明视窗22，镜头组件4透过透明视窗22获取图像信息。
在一些实施例中，下盖组件2也可以称为透明罩组件，下盖21也可以称为透明罩。
下盖组件2包括透明视窗22。在本公开中，透明视窗22是转动视窗，其能够在转动电机的驱动下，绕着第一轴线O(参见图3)转动。在图1中，第一轴线O为竖直延伸的直线。
透明视窗22和雨刷条11设置为能够相对转动，通过雨刷条11扫过透明视窗22的表面，对透明视窗22的表面进行清洁。
在一个具体的实施例中，除尘摄像机包括壳体组件3、下盖组件2、镜头组件4和雨刷组件1。下盖组件2安装至壳体组件3，且具有下盖21和透明视窗22，下盖组件2设置为能够在电机的驱动下，相对于壳体组件3绕着下盖轴线转动。镜头组件4透过透明视窗22获取图像信息，镜头组件4安装至下盖组件2，且随下盖组件2一起绕着下盖轴线转动。雨刷组件1安装至壳体组件3，且具有雨刷条11，雨刷条11的内表面形状与视窗玻璃外表面的形状适配，以使雨刷条11的内表面适于贴合视窗玻璃的外表面，其中，雨刷组件1安装至壳体组件3，在绕着下盖轴线的周向上，雨刷组件1周向位置固定，当下盖21相对雨刷组件1做周向转动时，能够使得视窗玻璃22上异物在雨刷条施加的切向力作用下从视窗玻璃脱离。
本公开实施例的除尘摄像机通过透明视窗22和雨刷条11之间的相对转动来对透明视窗的表面进行清洁，结构简单，且能够对曲面型的透明视窗进行有效清洁。
在图示实施例中，下盖组件2包括下盖21，透明视窗22固定设置在下盖21上。在一个可选实施例中，下盖21仅仅部分区域是透明的，在此情况下，转动视窗与镜头组件4可以设置为一起转动，而将雨刷条11设置为不绕转动视窗的转动轴线转动，如此设置，当转动视窗与镜头组件4一起转动时，雨刷条11能够扫过对转动视窗的表面，以对转动视窗的表面进行清洁。在一些实施例中，下盖21主体部分可以用不透明的金属制造，以提高安全性能。在图示的实施例中，还设置有补光窗23。如果需要，还可以设置对补光窗23进行清洁，这也在本公开的保护范围之内。
转动视窗与镜头组件可以设置为一起转动，也可以设置为彼此相对转动。
雨刷组件1安装至壳体组件3，其具有雨刷条11。雨刷条11与转动视窗配合的部位，形状与转动视窗的轮廓相匹配或适应，以对转动视窗进行良好的清洁。例如，转动视窗外凸，雨刷条内凹，两者具有相同的圆弧半径。有利的是，雨刷条采用橡胶等材质，具有适当的弹性与摩擦系数。
在一个实施例中，转动视窗与镜头组件一起转动。也就是说，镜头组件与转动视窗一体地转动。在镜头组件转动切换观察区域时，转动视窗随着镜头组件一起转动。具体而言，在观测模式下，转动视窗与镜头组件一体转动，通过转动，实现观测角度的变化；在除尘模式下，转动视窗也与镜头组件一起转动，通过转动，实现转动视窗相对于雨刷的运动，从而实现对视窗表面的清洁。
在另一个实施例中，转动视窗相对于镜头组件转动。例如，在观测模式下，镜头组件一体转动，而转动视窗不转动，通过转动，实现观测角度的变化。在除尘模式下，镜头组件一体不转动，而转动视窗转动，通过转动，实现转动视窗相对于雨刷条的运动，从而实现对视窗表面的清洁。
在一个可选实施例中，转动视窗为回转体形视窗，其外表面至少部分地为一母线绕着回转轴线旋转而形成。在一个可选实施例中，转动视窗的外表面主要为一母线绕着回转轴线旋转而形成。例如，回转轴线与第一轴线平行，母线可以为圆弧、直线、或者其他曲线，或者，圆弧、直线、或者其他曲线的组合。
在一个实施例中，转动视窗为半球型。在本公开中，转动视窗为半球型，包括转动视窗大体上为半球形，例如比半球形球面略微多一些，或者略微少一些。
具体地，在图示实施例中，下盖组件2设置为随镜头组件4一体地绕着第一轴线转动，在绕着第一轴线的周向上，雨刷组件1周向位置固定(参见图3)。具体地，水平转动电机 通过齿轮传动带动下部的转动体往复运动，转动体包含了内罩和下盖组件2，下盖组件2含有半球形的下盖和球形玻璃(透明视窗)，下盖和球形玻璃通过胶粘密封及固定。球形玻璃的外表面与下盖的外表面处于同一球面，或略微突出于下盖的外表面。
为了便于说明，在图3中，以雨刷组件1或雨刷条11处于转动视窗的周向中间位置处为180°位置，与之相对的0度位置为PO线指示的位置。也就是说，将该位置标记为下盖组件2的180度位置，可以理解的是，该位置也可以定义为其他度数位置，例如，可以将该位置定义为0度位置。
在图3所示180°位置的上下两侧的区域为清洁周向位置区域。清洁周向位置区域即MO、NO两条线之内的区域，在图4中，S为凸轮的行程，清洁周向位置区域B1和B2之间的区域。清洁周向位置区域对应的圆心角的大小可以根据需要设置。清洁周向位置区域的圆心角等于或略大于透明视窗的圆心角。
在清洁周向位置区域，下盖组件2正对雨刷条11，可以进行清洁。在观测周向位置区域，下盖组件2与雨刷条11错开，便于进行视频监控。换句话说，下盖组件2绕着第一轴线的周向位置分为观测周向位置区域和清洁周向位置区域。
需要指出的是，对于清洁周向位置区域，是不便于进行观测或视频监控的，因为，镜头组件的视线受到雨刮单元的干扰。
需要指出的是，如果需要，清洁周向位置区域也可以将补光窗也包括在内。
在图示实施例中，透明视窗22为回转曲面。更具体而言，透明视窗22为回转曲面的一部分。
参见图2，下盖组件2包括半球形的下盖21，透明视窗22固定设置在下盖21上，且仅仅占据下盖21的局部表面。
在图示实施例中，雨刷条11设置为能够相对于壳体组件3运动，从而在接触状态与离开状态之间切换，在接触状态下，雨刷条11接触透明视窗22；在离开状态下，雨刷条11脱离与透明视窗22的接触。或者，雨刷条11设置为能够相对于壳体组件3运动，使得雨刷条11在保持与下盖组件2接触的状态下对接触的紧密程度进行调整。
如图所示，雨刷组件1包括滚轮18、推杆15、弹簧16、雨刷头14、浮动转轴13(也可以称为雨刷头转轴)、雨刷固定钣金12和雨刷条11。
雨刷条11和雨刷固定钣金12相对固定，连接为一体，组成雨刷条组件。雨刷条组件绕浮动转轴13浮动，保证雨刷条11与曲面玻璃的有效贴合，实现良好的除尘效果。可以 理解的是，本公开中的“浮动”是指：雨刷条11和雨刷固定钣金12能够绕着浮动转轴13摆动，以适应曲面玻璃的形状，保证雨刷条11与曲面玻璃的有效贴合。
雨刷固定钣金12通过雨刷头转轴13转动地连接至雨刷头14。也就是说，雨刷固定钣金12能够相对于雨刷头14自由转动。雨刷固定钣金12的转动轴线(第二转动轴线)垂直于第一转动轴线。
雨刷组件1上转轴与内罩凸轮通过弹簧16实现贴合。在图示实施例中，弹簧16为压缩弹簧。当凸轮顶起转轴实现雨刷贴合时，弹簧16处于压缩状态。当凸轮顶起距离减小时，弹簧16推动推杆15运动，实现雨刷条与视窗的分离。或者，当凸轮顶起转轴实现雨刷紧密贴合时，弹簧16处于压缩状态。当凸轮顶起距离减小时，弹簧16推动推杆15运动，实现雨刷条与视窗保持接触但接触程度变弱。
具体地，下盖组件2还包括内罩24，内罩24与下盖21固定连接，例如一体成型，或者通过螺钉固定连接。参见图2和图5，内罩24的外周设有凸轮表面241。在绕下盖轴线转动的同时，凸轮表面214能够推动推杆15克服弹簧16施加的弹性力，使得雨刷头14绕着摆动转轴51枢转，进而具有向视窗所在方向运动的趋势。
凸轮表面241可以直接推动推杆15，也可以间接地推动推杆15。
如图1和图2所示，雨刷组件1还包括滚轮18。滚轮18的滚轮转轴17与推杆15连接为一体。滚轮18能够绕滚轮转轴17转动。滚轮转轴17平行于下盖组件2的轴线。也就是说，凸轮表面241通过滚轮18和滚轮转轴17间接地推动推杆15。此种方案，有利于提高整体结构的紧凑型，充分利用摄像机内的空间。
滚轮18与内罩24的凸轮表面241滚动接触，在凸轮表面241的作用下径向运动，以推动推杆15。
在一些具体的实施例中，下盖组件2绕着下盖21轴线的周向位置为清洁周向位置时，凸轮表面241将推杆15顶出，实现雨刷条与透明视窗22贴合或紧密贴合；在下盖组件2绕着下盖轴线的周向位置为观测周向位置时，凸轮表面241允许推杆15在弹簧16的作用下退回，实现雨刷条11与透明视窗22分离或贴合程度变弱。
也就是说，在图示实施例中，雨刷头14通过摆动转轴51枢转地连接至壳体组件3，雨刷条11安装在雨刷头14上，通过所述雨刷头14绕所述摆动转轴51的枢转运动，实现所述雨刷条11在接接触状态与离开状态之间切换，或者使得雨刷条11在保持与下盖组件2接触的状态下对接触的紧密程度进行调整。
雨刷组件1还包括推杆15，推杆15与雨刷头14连接，用于驱动雨刷头14绕着摆动转轴51枢转，
其中，推杆15由弹簧16弹性加载，弹簧16对推杆15施加的弹性力使得雨刷条11趋于保持在离开状态或接触程度较小的状态。
如图2和图5所示，摄像机设有凸轮结构，在绕中心轴转动的同时，凸轮表面241能够推动推杆15克服弹簧16施加的弹性力，使雨刷组件前后运动，以实现弧形雨刷与球形玻璃贴合，起到玻璃除尘的效果。
当摄像机需要除尘时，进入雨刷除尘模式，即控制雨刷电机，带动下盖组件上的玻璃区域与雨刷条贴合，通过相对运动实现除尘。
凸轮的设计满足在监控模式下，雨刷条和下盖是脱离的，在进入雨刷路径时，通过凸轮的顶出带动雨刷自动贴合玻璃，贴合后雨刷不动，球体自我转动实现除尘。
也就是说，雨刷组件1还包括滚轮18，滚轮18由驱动电机驱动，而使得推杆15克服弹簧16的弹性力运动，使雨刷条11处于接触状态。在一个可选实施例中，滚轮18可以设置为凸轮，由一个单独的电机驱动，由此来推动推杆15。
在一些实施例中，雨刷组件1还包括雨刷固定钣金12，雨刷条11固定安装在雨刷固定钣金12上，雨刷固定钣金12通过浮动转轴13旋转安装至雨刷头14，能够绕着浮动转轴13摆动，
其中，浮动转轴13设置在雨刷条11的长度方向的中部处。
在一些实施例中，推杆15对雨刷头14的作用力臂L1与雨刷固定钣金12对雨刷头14的作用力臂L2之比，小于等于1:3。在本实施例中，L2实质上大体相当于浮动转轴13的轴线与摆动转轴51的轴线之间的距离。L1实质上大体相当于摆动转轴51的轴线与推杆运动方向限定的直线之间的距离。这样，推杆15只需要移动较小的距离，便能够使雨刷条移动较大的距离，如此设计能够减小凸轮表面的偏心尺寸，从而，有利于提高整体结构紧凑型。而且，还能够避免推杆的右端在连接轴52处卡死。
参见图1、图2和图5，在一些实施例中，雨刷组件1通过连接板19连接至外壳体31，连接板19的一端通过螺纹连接件固定连接至外壳体31。具体地，连接板19以悬臂方式设置，这样，能够使连接板19具有一定的弹性，以允许一定的制造误差或安装误差。
在一些实施例中，连接板19上设置有限位调节螺钉191。在安装时或出现故障时，限位调节螺钉191能够避免凸轮表面对滚轮施加过大的力，从而避免雨刷条以过大的力作用 在玻璃视窗上。
在图示实施例中，推杆15的运动方向设置为垂直下盖轴线。也就是说，推杆水平运动。或者，推杆水平径向运动。推杆穿过连接板上设置的水平穿孔，一端(左端)与滚轮转轴17一体连接，另一端(右端)与雨刷头14在连接轴52处连接。在一些具体的实施例中，推杆15可以与雨刷头铰接，且在铰接处设置有间歇，该间隙的尺寸可以为1.5-3mm(单侧间隙)，通过设置间隙能够允许推杆相对于雨刷头14做微量的上下运动，这样能够避免推杆卡死。在一些实施例中，连接轴52处的连接孔可以设置为长圆孔，以允许推杆15的右端相对于连接轴52能够做微量运动，示例性的，该长圆孔可以设置在推杆15的右端处。
本公开的除尘摄像机通过透明视窗和雨刷条之间的相对转动来对透明视窗的表面进行清洁，结构简单，且能够对曲面型的透明视窗进行有效清洁。
本公开实施例的结构为弧形雨刷与弧形球面互相转动除尘，弧形雨刷通过凸轮结构实现分离和贴合，且弧形雨刷组件与固定雨刷头为浮动固定，可有效消除装配公差，实现雨刷和玻璃的有效贴合，此结构能有效解决弧形贴合问题，满足客户矿下除尘需求。
本公开实施例的半球型雨刷结构，能有效解决半球型或者球形摄像机视窗脏污情况。新方案的雨刷条在雨刷模式下是不动的，通过水平电机带动球体水平往复转动，实现曲面玻璃表面的清洁。
最后需要指出的是：以上实施例仅用以说明本公开的技术方案，而非对其限制。本领域的普通技术人员应当理解：可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；这些修改或者替换，并不使相应技术方案的本质脱离本公开各实施例技术方案的精神和范围。

Claims (11)

  1. 一种除尘摄像机，其中，所述除尘摄像机包括：
    壳体组件(3)；
    下盖组件(2)，其安装至所述壳体组件(3)，且具有下盖(21)和透明视窗(22)，所述下盖组件(2)设置为能够在电机的驱动下，相对于所述壳体组件(3)绕着透明罩轴线转动，
    镜头组件(4)，其透过所述透明视窗(22)获取图像信息，所述镜头组件(4)安装至所述下盖组件(2)，且随所述下盖组件(2)一起绕着透明罩轴线转动；以及
    雨刷组件(1)，其安装至所述壳体组件(3)，且具有雨刷条(11)，所述雨刷条(11)的内表面形状与所述视窗玻璃外表面的形状适配，以使所述雨刷条(11)的内表面适于贴合所述视窗玻璃的外表面；
    其中，所述雨刷组件(1)安装至壳体组件(3)，在绕着透明罩轴线的周向上，所述雨刷组件(1)周向位置固定，通过所述透明罩相对所述雨刷组件(1)周向转动，使得所述视窗玻璃(22)上异物在所述雨刷条施加的切向力作用下从所述视窗玻璃剥离。
  2. 如权利要求1所述的除尘摄像机，所述下盖组件(2)绕着透明罩轴线的周向位置分为观测周向位置区域和清洁周向位置区域，在所述清洁周向位置区域，所述下盖组件(2)正对所述雨刷条(11)；在所述观测周向位置区域，所述下盖组件(2)与所述雨刷条(11)错开。
  3. 如权利要求1所述的除尘摄像机，所述下盖组件(2)包括半球形的下盖(21)，所述透明视窗(22)固定设置在所述下盖(21)上，且仅仅占据所述下盖(21)的局部表面。
  4. 如权利要求1-3中任一项所述的除尘摄像机，
    所述雨刷条(11)设置为能够相对于所述壳体组件(3)运动，从而在接接触状态与离开状态之间切换，在接触状态下，所述雨刷条(11)接触所述透明视窗(22)；在离开状态下，所述雨刷条(11)脱离与所述透明视窗(22)的接触；
    或者，所述雨刷条(11)设置为能够相对于所述壳体组件(3)运动，从而在保持与下盖组件(2)接触的状态下对接触的紧密程度进行调整。
  5. 如权利要求4所述的除尘摄像机，所述雨刷组件(1)包括雨刷头(14)，所述雨刷头(14)通过摆动转轴(51)枢转地连接至所述壳体组件(3)，所述雨刷条(11)安装在所述雨刷头(14)上，通过所述雨刷头(14)绕所述摆动转轴(51)的枢转运动，实现所 述雨刷条(11)在接接触状态与离开状态之间切换，或使所述雨刷条(11)在保持与下盖组件(2)接触的状态下对接触的紧密程度进行调整。
  6. 如权利要求5所述的除尘摄像机，所述雨刷组件(1)还包括推杆(15)，所述推杆(15)与所述雨刷头(14)连接，用于驱动所述雨刷头(14)绕着所述摆动转轴(51)枢转，
    其中，所述推杆(15)由弹簧(16)弹性加载，所述弹簧(16)对推杆(15)施加的弹性力使得所述雨刷条(11)趋于保持在所述离开状态。
  7. 如权利要求6所述的除尘摄像机，所述下盖组件(2)还包括内罩(24)，所述内罩(24)与下盖(21)固定连接，所述内罩(24)的外周设有凸轮表面(241)，在绕透明罩轴线转动的同时，所述凸轮表面(241)能够推动所述推杆(15)克服所述弹簧(16)施加的弹性力，使得所述雨刷头(14)绕着所述摆动转轴(51)枢转，进而使得所述雨刷条(11)接触所述透明视窗(22)或下盖(21)。
  8. 如权利要求7所述的除尘摄像机，所述雨刷组件(1)还包括滚轮(18)，所述滚轮(18)的滚轮转轴(17)与所述推杆(15)连接为一体，所述滚轮(18)与所述内罩(24)的凸轮表面(241)滚动接触，在所述凸轮表面(241)的作用下径向运动，以推动所述推杆(15)。
  9. 如权利要求8所述的除尘摄像机，
    在所述下盖组件(2)绕着透明罩轴线的周向位置为清洁周向位置时，所述凸轮表面(241)将所述推杆(15)顶出，实现所述雨刷条(11)与所述透明视窗(22)贴合；
    在所述下盖组件(2)绕着透明罩轴线的周向位置为观测周向位置时，所述凸轮表面(241)允许所述推杆(15)在弹簧(16)的作用下退回，实现雨刷条(11)与透明视窗(22)分离。
  10. 如权利要求9所述的除尘摄像机，所述雨刷组件(1)还包括雨刷固定钣金(12)，所述雨刷条(11)固定安装在所述雨刷固定钣金(12)上，所述雨刷固定钣金(12)通过浮动转轴(13)旋转安装至所述雨刷头(14)，能够绕着所述浮动转轴(13)摆动，
    其中，所述浮动转轴(13)设置在所述雨刷条(11)的长度方向的中部处。
  11. 如权利要求9所述的除尘摄像机，所述推杆(15)对所述雨刷头(14)的作用力臂L1与所述雨刷固定钣金(12)对所述雨刷头(14)的作用力臂L2之比，小于等于1:3。
PCT/CN2022/105403 2021-12-30 2022-07-13 除尘摄像机 Ceased WO2023124010A1 (zh)

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