Purging structure and camera assembly equipped therewith
By designing a switchable blowing structure and cleaning mechanism, the problem of dust accumulation in the camera window and filter element was solved, achieving effective dust prevention and filter element cleaning, and reducing maintenance costs.
Patent Information
- Application Number
- CN202522474556.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-21
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-21
AI Technical Summary
Dust easily accumulates on the surface of the camera window, affecting the imaging effect. Existing filter elements with purging structures are prone to dust accumulation, affecting the filtration effect and incurring high maintenance costs.
Design a purging structure including an assembly chamber, a purging mechanism, and a cleaning mechanism. Switch between dust removal and sewage discharge states via baffles, and use a transmission mechanism to drive the baffles to block different channels to achieve air curtain dust prevention and filter element cleaning.
It effectively prevents dust accumulation in the viewing window, extends the service life of the filter element, reduces manual maintenance costs, and improves air cleanliness.
Smart Images
Figure CN224935729U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of monitoring equipment technology, and in particular to a purging structure and a camera device equipped with it. Background Technology
[0002] Since some cameras need to be used in outdoor scenes, their viewing windows are prone to accumulating dust, which seriously affects the image quality.
[0003] In related technologies, a blowing structure is typically used to form an air curtain at the viewing window to achieve a dust-proof effect. To ensure the cleanliness of the gas forming the air curtain, a filtration structure is also required to filter the gas drawn in by the fan. Filtered dust and impurities will adhere to and accumulate on the filter element of the filtration structure, affecting the subsequent filtration effect. Utility Model Content
[0004] Therefore, it is necessary to provide a purging structure that can form a clean air curtain to blow away dust at the viewing window and achieve the dust prevention effect; on the other hand, it can facilitate the cleaning of dust and impurities attached to the filter element and discharge them smoothly, thereby extending the service life of the filter element and reducing the cost of manual maintenance.
[0005] A purging structure includes an assembly housing with an assembly cavity, and a purging mechanism and a cleaning mechanism disposed in the assembly cavity. The assembly cavity has a first port and a second port. The purging mechanism includes at least a filter element with a filter cavity. A drain cavity is provided on the outer periphery of the filter element, and the drain cavity is independent of the filter element. The cleaning mechanism is located on the outer periphery of the filter element and is used to scrape the filter element. The purging structure also includes a transmission mechanism disposed on one axial side of the filter element. The transmission mechanism includes at least a movable baffle. The baffle can selectively block the drain cavity and the filter cavity to switch between a dust removal state and a drain state. In the dust removal state, the baffle blocks the drain cavity, and the second port, the filter cavity, and the first port are sequentially connected and jointly define an air curtain channel. In the drain state, the baffle blocks the filter cavity, and the first port, the drain cavity, and the second port are sequentially connected and jointly define a drain channel.
[0006] In other words, during dust removal, the baffle blocks the drain chamber, preventing it from connecting between the first and second openings. External air flows in through the second opening, is filtered by the filter element as it passes through the filter chamber, improving air cleanliness, and then flows out through the first opening, acting on the dust on the viewing window surface to achieve a dust-proof effect. During drain operation, the baffle blocks the filter chamber, preventing it from connecting between the first and second openings. External air flows through the first opening to the drain chamber and then out through the second opening, expelling dust and impurities from the drain chamber with the airflow. This extends the filter element's lifespan and reduces manual maintenance costs.
[0007] In some embodiments, the baffle includes a first baffle and a second baffle, which are capable of moving in opposite directions in a first direction to switch between the dust removal state and the sewage discharge state; in the dust removal state, the first baffle blocks the sewage discharge chamber and the second baffle moves away from the filter chamber; in the sewage discharge state, the second baffle blocks the filter chamber and the first baffle moves away from the sewage discharge chamber.
[0008] In some embodiments, the transmission mechanism further includes a power source and a transmission unit connected to the power source. The transmission unit is tractively connected to the first baffle and the second baffle, and the power source drives the first baffle and the second baffle to move in opposite directions through the transmission unit.
[0009] In some embodiments, the transmission unit includes a rotary transmission part and a linear transmission part; the rotary transmission part has a power input end and at least two power output ends, the power input end being connected to the power source; at least two linear transmission parts are provided, each linear transmission part and each power output end are corresponding and connected, one of the linear transmission parts is connected to the first baffle, and the other linear transmission part is connected to the second baffle.
[0010] In some embodiments, the rotary transmission unit includes a driving wheel and at least two driven wheels arranged circumferentially spaced along the driving wheel, the at least two driven wheels meshing in opposite directions to the driving wheel and are respectively connected to a linear transmission unit; and / or, the linear transmission unit includes a transmission rod and a transmission nut, which are threadedly engaged, the transmission rod is connected to the power output end, and the transmission nut is connected to the first baffle or the second baffle.
[0011] In some embodiments, the purging mechanism further includes a limiting baffle, which is disposed at one end of the filter element facing the transmission mechanism, and the limiting baffle can abut against and limit the movement of the filter element.
[0012] In some embodiments, the baffle includes a first baffle for blocking the sewage discharge chamber and a second baffle for blocking the filter chamber, which are capable of moving in opposite directions to switch between the dust removal state and the sewage discharge state; the limiting baffle is provided with a first through hole and a second through hole arranged at intervals along a first direction; in the dust removal state, the first baffle abuts against the edge of the first through hole and blocks the first through hole; in the sewage discharge state, the second baffle abuts against the edge of the second through hole and blocks the second through hole.
[0013] In some embodiments, the purging mechanism further includes a fan, the fan, the filter element and the transmission mechanism are arranged at intervals along the first direction, and the fan rotates in opposite directions in the dust removal state and the sewage discharge state.
[0014] In some embodiments, the purging mechanism further includes a rotary unit that is connected to the filter element and drives the filter element to rotate around the filter element axis; the cleaning mechanism includes at least a dust removal brush installed on the wall of the assembly cavity, which can scrape the filter element when it rotates.
[0015] In some embodiments, the drain chamber is located below the filter element, the second port is vertically divided into an air inlet and a drain outlet, the air inlet is connected to the filter chamber, the drain outlet is connected to the drain chamber, and the purging mechanism further includes a windproof grid located at the air inlet.
[0016] In some embodiments, the assembly housing has an outwardly extending extension at the drain outlet, the extended end of which protrudes from the side of the windshield grille away from the filter element.
[0017] This application also provides a camera device, including a camera and the above-mentioned blowing structure. One end of the camera is provided with a viewing window, and the blowing structure is located on the side of the camera. In the dust removal state, the blowing structure forms an air curtain on the surface of the viewing window through the air curtain channel. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 A cross-sectional view of the purging structure provided in an embodiment of this application in a dust removal state;
[0020] Figure 2 A partial cross-sectional view of the purging structure provided in an embodiment of this application in a dust removal state;
[0021] Figure 3 A partial cross-sectional view of the purging structure provided in an embodiment of this application in the sewage discharge state;
[0022] Figure 4 This is a partial schematic diagram of a purging structure provided in an embodiment of this application;
[0023] Figure 5 A schematic diagram of a purge structure provided in an embodiment of this application from a first perspective;
[0024] Figure 6 A schematic diagram of a purging structure provided in an embodiment of this application from a second perspective;
[0025] Figure 7 This is a partial schematic diagram of a camera device provided in an embodiment of this application.
[0026] Reference numerals: 100, purging structure; 110, assembly housing; 111, lower housing body; 112, upper cover plate; 113, extension section; 120, purging mechanism; 121, filter element; 122, limiting baffle; 123, fan; 124, rotary unit; 125, wind deflector; 130, cleaning mechanism; 131, dust removal brush; 132, cleaning frame; 140, transmission mechanism; 141, baffle; 142, power source; 143, transmission unit; 143a, rotary transmission part; 143b, linear transmission part; 144, transmission frame; 200, camera. ; 210, Viewing window; 220, Assembly notch; 1101, Assembly cavity; 1102, First opening; 1103, Second opening; 1103a, Air inlet; 1103b, Drain outlet; 1104, Drain outlet cavity; 1111, Flow guide; 1111a, Flow guide cavity; 1210, Filter cavity; 1211, Filter body; 1212, Support; 1221, First through hole; 1222, Second through hole; 1411, First baffle; 1412, Second baffle; 1431, Driving wheel; 1432, Driven wheel; 1433, Transmission rod; 1434, Passive wheel. Detailed Implementation
[0027] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0028] It should be noted that when a component is referred to as being "fixed to" or "attached to" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.
[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0030] In 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 and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates 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 indicates that the first feature is at a lower horizontal level than the second feature.
[0031] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.
[0032] Please see Figures 1 to 4One embodiment of this application provides a purging structure 100, including an assembly housing 110, a purging mechanism 120, a cleaning mechanism 130, and a transmission mechanism 140. The assembly housing 110 has an assembly cavity 1101, which has a first opening 1102 and a second opening 1103. The purging mechanism 120 is located in the assembly cavity 1101 and includes at least a filter element 121. The filter element 121 has a filter cavity 1210, and a drain cavity 1104 is provided on the outer periphery of the filter element 121. The drain cavity 1104 is independent of the filter element 121. The cleaning mechanism 130 is located in the assembly cavity 1101 and on the outer periphery of the filter element 121, and is used to scrape the filter element 121. The transmission mechanism 140 is located on one axial side of the filter element 121 and includes at least a movable baffle 141. The baffle 141 can selectively block the drain cavity 1104 and the filter cavity 1210 to switch between dust removal and drain states. In the dust removal state, the first baffle 1411 blocks the sewage discharge chamber 1104, and the second port 1103, the filter chamber 1210 and the first port 1102 are connected in sequence and jointly define the air curtain passage; in the sewage discharge state, the second baffle 1412 blocks the filter chamber 1210, and the first port 1102, the sewage discharge chamber 1104 and the second port 1103 are connected in sequence and jointly define the sewage discharge passage.
[0033] Understandably, the assembly housing 110 serves two purposes: firstly, it facilitates the integration of the aforementioned mechanisms, thereby defining the corresponding air curtain channel and sewage discharge channel, and improving the protection of each mechanism; secondly, it allows the purging structure 100 to be installed as a whole at the target location. The assembly housing 110 typically adopts a split structure, which facilitates the disassembly, assembly, and replacement of the aforementioned mechanisms. The cleaning mechanism 130 maintains close contact with the outer peripheral wall of the filter element 121, thereby facilitating the thorough scraping of dust and impurities adhering to the filter element 121, improving the cleaning effect of the filter element 121. The scraped dust and impurities can collect in the sewage discharge chamber 1104, thus facilitating their discharge during sewage discharge.
[0034] In dust removal mode, baffle 141 can block the drain chamber 1104, preventing it from connecting the first opening 1102 and the second opening 1103. External air flows in through the second opening 1103 and is filtered by the filter element 121 as it passes through the filter chamber 1210, thus improving the cleanliness of the air. It then flows out through the first opening 1102, acting on the dust on the viewing window surface to achieve a dust-proof effect. Furthermore, because baffle 141 blocks the drain chamber 1104 at this time, it ensures that the dust and impurities accumulated in the drain chamber 1104 will not flow to the first opening 1102, guaranteeing the dust-proof effect. In the sewage discharge state, the baffle 141 can block the filter chamber 1210, preventing the filter chamber 1210 from being connected between the first port 1102 and the second port 1103. External air flows through the first port 1102 to the sewage discharge chamber 1104, and then flows out through the second port 1103. Dust and impurities in the sewage discharge chamber 1104 are discharged to the outside of the sewage discharge chamber 1104 with the airflow.
[0035] In other words, the blowing structure 100 provided in this embodiment can blow away dust at the viewing window through a clean air curtain formed by air flowing along the air curtain channel during dust removal, thus achieving a dust prevention effect. Furthermore, during sewage discharge, the dust and impurities gathered in the sewage discharge chamber 1104 can be smoothly discharged through the air flowing along the sewage discharge channel, thereby extending the service life of the filter element 121 and reducing manual maintenance costs.
[0036] The sewage discharge chamber 1104 is formed by the outer peripheral sidewall of the filter element 121 and the cavity wall of the assembly chamber 1101.
[0037] Please continue reading. Figures 1 to 4 In some embodiments, the baffle 141 includes a first baffle 1411 and a second baffle 1412, which are capable of moving in opposite directions along a first direction. In the dust removal state, the first baffle 1411 blocks the drain chamber 1104, and the second baffle 1412 moves away from the filter chamber 1210; in the sewage discharge state, the second baffle 1412 blocks the filter chamber 1210, and the first baffle 1411 moves away from the drain chamber 1104.
[0038] In this diagram, the first direction is defined as the X-axis, which is the left-right direction. The first baffle 1411 and the second baffle 1412 move in opposite directions along the X-axis. Specifically, when the first baffle 1411 moves to the right along the X-axis, the second baffle 1412 moves to the left; conversely, when the first baffle 1411 moves to the left along the X-axis, the second baffle 1412 moves to the right. The transmission mechanism 140 is located on the left side of the filter element 121 along the X-axis. The first port 1102 is located on the side of the transmission mechanism 140 opposite to the filter element 121 along the X-axis, and the second port 1103 is located on the side of the filter element 121 opposite to the transmission mechanism 140 along the X-axis.
[0039] Understandably, in dust removal mode, the first baffle 1411 moves to the right along the X-axis to block the drain chamber 1104, and the second baffle 1412 moves to the left along the X-axis to move away from the filter chamber 1210. This causes the filter chamber 1210 to connect between the first opening 1102 and the second opening 1103, allowing external air to flow in through the second opening 1103, be filtered through the filter chamber 1210, and then flow out through the first opening 1102 to blow away dust from the viewing window, thus achieving a dust prevention effect. In drain mode, the first baffle 1411 moves to the left along the X-axis to move away from the drain chamber 1104, and the second baffle 1412 moves to the left along the X-axis to block the filter chamber 1210, preventing the filter chamber 1210 from connecting between the first opening 1102 and the second opening 1103. Since the dust and impurities scraped off by the aforementioned cleaning mechanism 130 from the filter element 121 can be collected in the drain chamber 1104, external air flows through the first port 1102 to the drain chamber 1104 to blow away the dust and impurities in the drain chamber 1104 and discharge them from the second port 1103.
[0040] In other words, by using the first baffle 1411 and the second baffle 1412, both the sewage discharge chamber 1104 and the filter chamber 1210 are equipped with baffles 141 that can be used to seal and unseal, which not only makes the operation more convenient, but also simplifies the transmission mechanism 140.
[0041] Please continue reading. Figures 1 to 4In some embodiments, both ends of the filter chamber 1210 along the X-axis and both ends of the drain chamber 1104 along the X-axis are open, with the two openings being a left opening and a right opening, respectively. A first baffle 1411 and a second baffle 1412 are used to block the left opening of the drain chamber 1104 and the left opening of the filter chamber 1210, respectively. The purging mechanism 120 also includes a limiting baffle 122, which is installed at one end of the filter element 121 along the X-axis towards the transmission mechanism 140. The limiting baffle 122 is fixed to the assembly housing 110 to support the filter element 121. Furthermore, the limiting baffle 122 divides the assembly chamber 1101 into a first part and a second part. The first part is located on the left side of the limiting baffle 122 and communicates with the first opening 1102, while the second part is located on the right side of the limiting baffle 122 and communicates with the second opening 1103. The limiting baffle 122 can abut against the baffle 141 to limit its movement, thereby preventing the baffle 141 from moving too much and squeezing the filter element 121, causing damage. The limiting baffle 122 has a first through hole 1221 and a second through hole 1222 extending along the X-axis, which are arranged at intervals. The first through hole 1221 corresponds to the drain chamber 1104, and the edge of the first through hole 1221 abuts against the first baffle 1411 for limitation. The second through hole 1222 corresponds to the filter chamber 1210, and the edge of the second through hole 1222 abuts against the second baffle 1412 for limitation. Therefore, in the drain state, the second baffle 1412 abuts against the edge of the second through hole 1222 and blocks the edge of the second through hole 1222, thereby blocking the filter chamber 1210. The first port 1102 and the second port 1103 are connected through the drain chamber 1104, reducing the impact of gas flowing in through the first port 1102 on the filter element 121 during draining. In the dust removal state, the first baffle 1411 abuts against the edge of the first through hole 1221 and blocks the edge of the first through hole 1221, thereby blocking the sewage discharge chamber 1104. The first port 1102 and the second port 1103 are connected through the filter chamber 1210, reducing the influence of dust and impurities in the sewage discharge chamber 1104 on the gas flowing out through the first port 1102.
[0042] A sealing element may be provided between the limiting baffle 122 and the cavity wall of the assembly cavity 1101 to ensure the sealing of the connection, thereby reducing interference between the filter cavity 1210 and the sewage discharge cavity 1104 in dust removal and sewage discharge states. Simultaneously, sealing elements may be provided on both the first baffle 1411 and the second baffle 1412 to ensure their sealing when they abut against the limiting baffle 122, further reducing the influence and interference between the sewage discharge cavity 1104 and the filter cavity 1210.
[0043] Please continue reading. Figures 1 to 4In some embodiments, the transmission mechanism 140 further includes a power source 142 and a transmission unit 143 connected to the power source 142. The transmission unit 143 is drively connected to the first baffle 1411 and the second baffle 1412. The power source 142 drives the first baffle 1411 and the second baffle 1412 to move in opposite directions through the transmission unit 143. The power source 142 can be a motor, which drives the first baffle 1411 and the second baffle 1412 to move in opposite directions through the transmission unit 143. Alternatively, the power source 142 can also be a cylinder, an electric push rod, or a belt transmission mechanism 140, a chain transmission mechanism 140, etc., as long as it can satisfy the linear movement of the first baffle 1411 and the second baffle 1412 along the X-axis direction. This configuration facilitates direct electric control, making operation more convenient and reliable.
[0044] Furthermore, the transmission unit 143 includes a rotary transmission section 143a and a linear transmission section 143b. The rotary transmission section 143a has a power input end and at least two power output ends, and the power input end is connected to the power source 142. At least two linear transmission sections 143b are provided, with each linear transmission section 143b corresponding to and connected to each power output end. Taking two linear transmission sections 143b as an example, they are respectively a first linear transmission section and a second linear transmission section. The first linear transmission section is connected to a first baffle 1411, and the second linear transmission section is connected to a second baffle 1412. The power source 142 is an electric motor. The power input end is connected to the motor shaft of the motor, and then the torque of the motor is output to the corresponding linear transmission unit 143b through at least two power output ends. The linear transmission unit 143b then transmits the torque to the corresponding first baffle 1411 or second baffle 1412, thereby converting the rotational motion into the linear motion of the first baffle 1411 and the second baffle 1412. This reduces the component forces in other directions when the first baffle 1411 and the second baffle 1412 are blocking, thereby improving the stability and reliability of the blocking.
[0045] Please continue reading. Figures 1 to 4 In some embodiments, the rotary transmission unit 143a includes a driving wheel 1431 and at least two driven wheels 1432 arranged circumferentially spaced along the driving wheel 1431. The at least two driven wheels 1432 mesh with the driving wheel 1431 in opposite directions and are respectively connected to a linear transmission unit 143b. That is, the rotary transmission unit 143a transmits power through gear meshing, resulting in smoother and more reliable driving. Taking the two driven wheels 1432 as an example, they are a first driven wheel and a second driven wheel, both of which mesh with the driving wheel 1431 and are arranged circumferentially spaced along the driving wheel 1431 to avoid transmission interference. The first driven wheel is connected to the first linear transmission unit, and the second driven wheel is connected to the second linear transmission unit.
[0046] In this design, the driving wheel 1431 may have two gear rings along its axial direction. One gear ring meshes with the first driven wheel, and the other gear ring meshes with the second driven wheel, thereby controlling the first and second driven wheels to rotate in opposite directions. Thus, when the driving wheel 1431 rotates clockwise, it meshes with the first driven wheel, causing it to rotate. The first driven wheel then moves the first baffle 1411; in this case, the second driven wheel will not rotate with the driving wheel 1431. Conversely, when the driving wheel 1431 rotates counterclockwise, it meshes with the second driven wheel, causing it to rotate. The second driven wheel then moves the second baffle 1412; in this case, the first driven wheel will not rotate with the driving wheel 1431. This is merely an example.
[0047] Furthermore, the rotary transmission unit 143a also includes a driven wheel 1434, which meshes with the driven wheel 1432 and is connected to the linear transmission unit 143b. By utilizing the driven wheel 1434, the transmission ratio between the driven wheel 1434 and the driven wheel 1432 can be adjusted, thereby ensuring stable output from the linear transmission unit 143b. This is merely an example.
[0048] The transmission mechanism 140 also includes a transmission frame 144, which is fixed to the assembly housing 110. The aforementioned driven wheel 1432 and passive wheel 1434 are rotatably connected to the transmission frame 144. The linear transmission unit 143b can also be supported on the transmission frame 144 to ensure assembly stability and transmission reliability.
[0049] Please continue reading. Figures 1 to 4 Furthermore, the linear transmission unit 143b includes a transmission rod 1433 and a transmission nut (not shown in the figure), which are threadedly connected. The transmission rod 1433 is connected to the power output end (i.e., the aforementioned driven wheel 1432), and the transmission nut is connected to the corresponding first baffle 1411 or second baffle 1412. In other words, the threaded transmission between the transmission rod 1433 and the driven wheel 1432 is used to convert the rotational motion of the driven wheel 1432 into the linear motion of the baffle 141 along the X-axis, thereby satisfying the switching between dust removal and sewage discharge states.
[0050] The first linear transmission unit corresponds to the first transmission rod and the first transmission nut, and the second linear transmission unit corresponds to the second transmission rod and the second transmission nut. The first transmission rod is connected to the first driven wheel and rotates with it, thereby driving the first baffle 1411 to reciprocate linearly along the X-axis direction via the first transmission nut. The second transmission rod is connected to the second driven wheel and rotates with it, thereby driving the second baffle 1412 to reciprocate linearly along the X-axis direction via the second transmission nut. Because the rotation directions of the first and second driven wheels are opposite, the rotation directions of the first and second transmission rods are also opposite, causing the linear motion directions of the first and second transmission nuts to be opposite, thus achieving the opposite motion of the first baffle 1411 and the second baffle 1412.
[0051] Alternatively, the linear drive unit 143b can also be a belt drive or a chain drive, and the first baffle 1411 and the second baffle 1412 can be connected to the corresponding drive belt or drive chain respectively to satisfy linear reciprocating motion.
[0052] Please continue reading. Figures 1 to 4 In some embodiments, the purging mechanism 120 further includes a fan 123. The fan 123, filter element 121, and transmission mechanism 140 are arranged at intervals along a first direction. The fan 123 rotates in opposite directions in the dust removal and sewage discharge states. It is understood that the fan 123 provides power for the gas flowing along the air curtain channel and the gas flowing along the sewage discharge channel. The fan 123 is located on the side of the transmission mechanism 140 opposite to the filter element 121 along the X-axis. In the dust removal state, the fan 123 can rotate clockwise, drawing in external air from the second opening 1103, which flows through the filter element 121 and the first opening 1102, and is then delivered to the viewing window surface, ensuring the formation of a clean air curtain on the viewing window surface. In the sewage discharge state, the fan 123 rotates counterclockwise, drawing in external air from the first port 1102 and allowing it to flow through the sewage discharge chamber 1104, thereby blowing dust and impurities in the sewage discharge chamber 1104 to the second port 1103 for discharge.
[0053] In actual use, the blowing structure 100 can first maintain the dust removal state for a period of time, then stop the fan 123, and then use the cleaning structure to scrape the dust and impurities attached to the filter element 121 into the drain chamber 1104. After scraping for a period of time, it can be switched to the drain state, and the fan 123 will start again and rotate in reverse to discharge the dust and impurities in the drain chamber 1104.
[0054] Among them, fan 123 can be an axial flow fan. This is only an example.
[0055] Please continue reading. Figures 1 to 4In some embodiments, the blowing mechanism 120 further includes a rotating unit 124, which is connected to the filter element 121 and drives the filter element 121 to rotate around its axis. The cleaning mechanism 130 includes at least a dust removal brush 131 mounted on the wall of the assembly cavity 1101, which can scrape the filter element 121 when it rotates.
[0056] In other words, the rotating unit 124 drives the filter element 121 to rotate around its axis, thereby causing the outer peripheral sidewall of the filter element 121 to fully contact the dust removal brush 131. The dust removal brush 131 then scrapes off the dust and impurities adhering to the outer peripheral sidewall, which are collected in the drain chamber 1104 and discharged through the drain channel. The filter element 121 includes a support 1212 and a filter body 1211 mounted on the support 1212. The filter body 1211 is cylindrical, and the support 1212 is supported inside the filter body 1211. The rotating unit 124 includes a motor and a drive shaft connected to the motor shaft. The drive shaft is connected to the support 1212, which facilitates the rotation of the filter element 121 by the motor. The cleaning mechanism 130 also includes a cleaning frame 132, to which the dust removal brush 131 is supported and connected for stability. The dust removal brush 131 is elongated and its length is basically the same as the axial length of the filter element 121 to ensure that all parts of the filter element 121 can be thoroughly scraped. The aforementioned rotary unit 124 can be supported on the cleaning frame 132.
[0057] In practical use, a dust removal brush 131 can be provided on both sides of the filter element 121 along the second direction to improve the scraping effect. Of course, three or four dust removal brushes 131 can also be provided, arranged at intervals along the circumference of the filter element 121, as long as they can meet the requirements for scraping and cleaning the filter element 121.
[0058] The second direction is perpendicular to the first direction, and the second direction can be the Y-axis direction.
[0059] Please see Figure 1 , Figure 5 and Figure 6In some embodiments, the second port 1103 is vertically divided into an air inlet 1103a and a drain port 1103b. The air inlet 1103a is connected to the filter chamber 1210, and the drain port 1103b is connected to the drain chamber 1104. The vertical direction is the Z-axis direction. The dust and impurities scraped off can naturally fall into the drain chamber 1104 under the action of gravity. It can be understood that in the dust removal state, the air inlet 1103a, the filter element 121, and the first port 1102 are connected in sequence to define the air curtain passage. External air flows in through the air inlet 1103a under the action of the fan 123, flows through the filter element 121 for filtration, and is sent out from the first port 1102 to form a clean air curtain on the viewing window surface to meet the dust prevention requirement. In the sewage discharge state, the first inlet 1102, the sewage discharge chamber 1104 and the sewage discharge port 1103b are connected in sequence to define the sewage discharge channel. External air flows in through the first inlet 1102 under the action of the fan 123 rotating in the opposite direction, blowing away the dust and impurities in the sewage discharge chamber 1104 and discharging from the sewage discharge port 1103b.
[0060] Furthermore, the purging mechanism 120 also includes a baffle grille 125, which is located at the air inlet 1103a. The baffle grille 125 effectively controls the airflow and direction entering the air inlet 1103a, ensuring that air flows evenly through the filter element 121 and improving filtration efficiency. Simultaneously, the baffle grille 125 also blocks large particulate impurities, preventing them from directly entering the filter element 121 and extending its service life.
[0061] In some embodiments, the housing 110 has an outwardly extending extension 113 at the drain port 1103b, the extended end of which protrudes from the side of the baffle 125 away from the filter element 121. This arrangement effectively extends the drain channel, allowing the drain channel outlet to be located away from the baffle 125, and especially away from the filter element 121. This helps prevent dust and impurities from being blown back to the air inlet 1103a or the filter element 121 during the draining process, ensuring the cleanliness and filtration efficiency of the purging mechanism 120.
[0062] Please continue reading. Figure 1 , Figure 5 and Figure 6In some specific embodiments, the assembly housing 110 includes a lower housing body 111 and an upper cover plate 112. The lower housing body 111 has a cavity with a top opening and a side opening at one end along the X-axis. The upper cover plate 112 is fastened to the top cavity opening to jointly form an assembly cavity 1101. The side opening serves as the aforementioned second opening 1103. The lower housing body 111 extends downward from the side opening in a direction away from the filter element 121 to form an extension section 113. The other end of the lower housing body 111 along the X-axis has a bent guide section 1111, which forms a guide cavity 1111a to facilitate blowing gas towards the viewing window. The guide cavity 1111a is part of the assembly cavity 1101. The upper cover plate 112 can be engaged with the lower housing body 111 by snap-fit, screw, etc. The aforementioned rotary unit 124, cleaning mechanism 130, transmission mechanism 140 and fan 123 can all be installed on the lower housing body 111.
[0063] Please see Figure 1 and Figure 7 This application also provides a camera device, including a camera 200 and the aforementioned blowing structure 100. A viewing window 210 is provided at one end of the camera 200, and the blowing structure 100 is located on the side of the camera 200. In dust removal mode, the blowing structure 100 forms an air curtain on the surface of the viewing window 210 through an air curtain channel. The camera 200 has an optical axis direction, which is set along the X-axis. The blowing structure 100 is mounted on the top of the camera 200, and the guide portion 1111 bends downwards above the viewing window 210, thereby achieving blowing of the viewing window 210. A mounting notch 220 is recessed on the top of the camera 200, and a portion of the blowing structure 100 can be accommodated in the mounting notch 220, thereby reducing the overall size. Using the cooperation of the cleaning mechanism 130 and the rotating unit 124, dust and impurities adhering to the filter element 121 are scraped into the drain chamber 1104. Then, the fan 123 flips the filter to draw in external air and the first inlet 1102, blowing away the dust and impurities in the drain chamber 1104 and expelling them from the drain outlet 1103b, thereby reducing the dust in the assembly chamber 1101 and on the filter element 121 and ensuring the normal use of the filter element 121.
[0064] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0065] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.
Claims
1. A purging structure, characterized in that, The assembly includes an assembly housing (110) with an assembly cavity (1101) and a blowing mechanism (120) and a cleaning mechanism (130) disposed in the assembly cavity. The assembly cavity (1101) has a first port (1102) and a second port (1103). The blowing mechanism (120) includes at least a filter element (121) with a filter cavity (1210). The filter element (121) has a drain cavity (1104) on its outer peripheral side. The drain cavity (1104) is independent of the filter element (121). The cleaning mechanism (130) is located on the outer peripheral side of the filter element (121) and is used to scrape the filter element (121). The purging structure also includes a transmission mechanism (140) disposed on one axial side of the filter element (121). The transmission mechanism (140) includes at least a movable baffle (141). The baffle (141) can selectively block the drain chamber (1104) and the filter chamber (1210) to switch between dust removal and drain states. In the dust removal state, the baffle (141) blocks the drain chamber (1104), and the second port (1103), the filter chamber (1210), and the first port (1102) are sequentially connected and jointly define the air curtain passage. In the drain state, the baffle (141) blocks the filter chamber (1210), and the first port (1102), the drain chamber (1104), and the second port (1103) are sequentially connected and jointly define the drain passage.
2. The purging structure according to claim 1, characterized in that, The baffle (141) includes a first baffle (1411) and a second baffle (1412), which are capable of moving in opposite directions along a first direction; In the dust removal state, the first baffle (1411) blocks the drain chamber (1104), and the second baffle (1412) is away from the filter chamber (1210); in the drain state, the second baffle (1412) blocks the filter chamber (1210), and the first baffle (1411) is away from the drain chamber (1104).
3. The purging structure according to claim 2, characterized in that, The transmission mechanism (140) further includes a power source (142) and a transmission unit (143) connected to the power source (142). The transmission unit (143) is connected to the first baffle (1411) and the second baffle (1412) in a transmission connection. The power source (142) drives the first baffle (1411) and the second baffle (1412) to move in opposite directions through the transmission unit (143).
4. The purging structure according to claim 3, characterized in that, The transmission unit (143) includes: The rotary transmission unit (143a) has a power input end and at least two power output ends, the power input end being connected to the power source (142) in a transmission manner; The linear drive unit (143b) is provided in at least two, and each linear drive unit (143b) corresponds to and is connected to each power output end. One of the linear drive units (143b) is connected to the first baffle (1411), and the other linear drive unit (143b) is connected to the second baffle (1412).
5. The purging structure according to claim 4, characterized in that, The rotary transmission unit (143a) comprises a driving wheel (1431) and at least two driven wheels (1432) arranged circumferentially spaced along the driving wheel (1431), wherein at least two of the driven wheels (1432) mesh in opposite directions to the driving wheel (1431) and are respectively connected to a linear transmission unit (143b); and / or, The linear transmission unit (143b) includes a transmission rod (1433) and a transmission nut, which are threadedly connected. The transmission rod (1433) is connected to the power output end, and the transmission nut is connected to the first baffle (1411) or the second baffle (1412).
6. The purging structure according to claim 1, characterized in that, The purging mechanism (120) also includes a limiting baffle (122), which is located at one end of the filter element (121) facing the transmission mechanism (140), and the limiting baffle (122) can abut against the baffle (141) for limiting.
7. The purging structure according to claim 6, characterized in that, The baffle (141) includes a first baffle (1411) for blocking the sewage discharge chamber (1104) and a second baffle (1412) for blocking the filter chamber (1210), which can move in opposite directions to switch the dust removal state and the sewage discharge state; The limiting baffle (122) is provided with a first through hole (1221) and a second through hole (1222) that are arranged through and spaced apart along the first direction. In the dust removal state, the first baffle (1411) abuts against the edge of the first through hole (1221) and blocks the first through hole (1221); in the sewage discharge state, the second baffle (1412) abuts against the edge of the second through hole (1222) and blocks the second through hole (1222).
8. The purging structure according to claim 1, characterized in that, The purging mechanism (120) also includes a fan (123), the fan (123), the filter element (121) and the transmission mechanism (140) are arranged at intervals along a first direction, and the fan (123) rotates in opposite directions in the dust removal state and the sewage discharge state.
9. The purging structure according to claim 1, characterized in that, The purging mechanism (120) further includes a rotary unit (124), which is connected to the filter element (121) for driving the filter element (121) to rotate around the axis of the filter element (121); The cleaning mechanism (130) includes at least a dust removal brush (131) installed on the wall of the assembly cavity (1101), which is capable of scraping the filter element (121) when the filter element (121) rotates.
10. The purging structure according to claim 1, characterized in that, The second port (1103) is vertically divided into an air inlet (1103a) and a drain outlet (1103b). The air inlet (1103a) is connected to the filter chamber (1210), and the drain outlet (1103b) is connected to the drain chamber (1104). The purging mechanism (120) also includes a windproof grid (125), which is located at the air inlet (1103a).
11. The purging structure according to claim 10, characterized in that, The assembly housing (110) has an outwardly extending extension section (113) at the drain port (1103b), and the extended end of the extension section (113) protrudes from the windshield grid (125) on the side away from the filter element (121).
12. A camera device, characterized in that, The device includes a camera (200) and a blowing structure according to any one of claims 1 to 11. One end of the camera (200) is provided with a viewing window (210), and the blowing structure (100) is provided on the side of the camera (200). In the dust removal state, the blowing structure (100) forms an air curtain on the surface of the viewing window (210) through the air curtain channel.