A camera device

Abstract

The utility model relates to a kind of camera device, including shell;Camera unit, including camera body, focusing assembly and lens assembly, the camera body is installed in the shell along the one end of first direction, the lens assembly is driven under the focusing assembly and lifts and falls;The focusing assembly is partially housed in the shell, and the focusing assembly includes mounting mechanism, drive mechanism and sleeve mechanism, the sleeve mechanism includes first sleeve, second sleeve, limiting piece and end cap assembly, the first sleeve is connected with the mounting mechanism, the second sleeve is housed in the first sleeve and coaxially with the first sleeve movable connection, the limiting piece is radially protruding on the outer wall of the second sleeve.The utility model can realize full-automatic focusing, and lens module is fully closed design, can be mutually isolated with external environment, so as to have high sealing property and better anti-pollution ability, can improve its stability and durability when working in complex industrial environment.

Description

Technical Field

[0001] This utility model relates to the field of industrial camera technology, and in particular to a camera device. Background Technology

[0002] As a core functional unit of machine vision systems, industrial camera modules are crucial hardware supports for intelligent manufacturing, automated inspection, and precision measurement. Their performance stability and reliability directly affect the accuracy and efficiency of production quality inspection. With the acceleration of industrial automation and intelligence, the application scenarios of industrial camera modules have deeply penetrated into multiple industries.

[0003] However, industrial camera modules face severe environmental adaptability challenges in practical applications, especially the insufficient sealing and protection performance, which has become a key technical bottleneck restricting their long-term reliable operation. Specifically, the sealing design of existing industrial camera modules mostly adopts a passive protection strategy, which is difficult to effectively block common fine contaminants in the industrial environment. These contaminants can enter the module through the following pathways: firstly, through the gaps in moving parts such as heat dissipation holes and focusing mechanisms; secondly, during long-term operation of the module, the aging and failure of seals due to thermal expansion and contraction further exacerbates the risk of contamination. After contaminants enter, they will accumulate in the optical system: for example, metal shavings or fiber particles adhering to the surface of the camera chip will disrupt the uniformity of the optical path and affect the accuracy of the image; oil or moisture adhering to the surface of the filter or sensor will change the optical transmittance, causing a decrease in image contrast or color distortion. The above problems not only directly reduce the quality of image acquisition, but also lead to an increase in the misjudgment rate of downstream detection algorithms, seriously affecting the yield and detection efficiency of industrial production.

[0004] In summary, there is an urgent need to develop an industrial camera module that combines high sealing performance, strong anti-pollution capability, and easy maintenance, especially with dust and pollution prevention optimization design for autofocus systems, in order to overcome the environmental adaptability limitations of existing technologies and meet the stringent requirements of high-end industrial scenarios for precision visual inspection. Utility Model Content

[0005] Therefore, the technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a camera device that can achieve fully automatic focusing and has a fully enclosed lens module design. Thus, the camera device has high sealing performance and high anti-pollution capability, which can improve its stability and durability when working in complex industrial environments, and ensure the accuracy of detection results and avoid false detections.

[0006] To solve the above-mentioned technical problems, this utility model provides a camera device, including,

[0007] case;

[0008] A camera unit includes a camera body, a focusing assembly, and a lens assembly. The camera body is mounted on one end of the housing along a first direction, and the lens assembly is raised and lowered by the focusing assembly.

[0009] The focusing assembly is partially housed in the housing. The focusing assembly includes a mounting mechanism, a driving mechanism, and a sleeve mechanism. The sleeve mechanism includes a first sleeve, a second sleeve, a limiting member, and an end cap assembly. The first sleeve is connected to the mounting mechanism. The second sleeve is housed in the first sleeve and is coaxially and movably connected to the first sleeve. The limiting member protrudes radially from the outer wall of the second sleeve. The first sleeve has a limiting hole extending in a first direction. The limiting member can move within the limiting hole. The limiting member is connected to the driving mechanism to move up and down under the drive of the driving mechanism. The lens assembly is housed in the second sleeve and connected to the second sleeve. The end cap assembly is connected to both ends of the first sleeve in the first direction to close the first sleeve.

[0010] A control unit, which is communicatively connected to the camera unit, controls the focusing assembly to adjust the focal length of the camera unit.

[0011] In one embodiment of the present invention, the limiting member includes at least one limiting pin, and at least one of the limiting pins protrudes from the outer wall of the second sleeve.

[0012] In one embodiment of this utility model, the focusing assembly further includes a connecting block, the limiting member is detachably connected to the connecting block, and the connecting block is connected to the movable end of the driving mechanism; the connecting block includes a clearance hole, a connecting groove, and a connecting groove notch, the clearance hole is disposed in the middle of the connecting block to allow the sleeve mechanism to pass through, the connecting groove is formed circumferentially inward along the clearance hole on the connecting block, the limiting member can be engaged with the connecting groove, the connecting groove notch is disposed at the edge of the connecting groove, and the limiting member can be embedded into the connecting groove through the connecting groove notch.

[0013] In one embodiment of this utility model, the mounting mechanism includes a base plate, a lifting plate, a first mounting plate, a second mounting plate, and a camera adapter plate arranged sequentially at intervals along a first direction. The base plate is fixedly connected to the housing. The lifting plate is connected to the limiting member and is also connected to the movable end of the driving mechanism. The driving mechanism is installed in the mounting space formed by the first mounting plate and the second mounting plate. The camera body is assembled on the camera adapter plate.

[0014] In one embodiment of this utility model, the driving mechanism includes a driving component, a transmission assembly, and a lead screw assembly. The driving component is mounted on the first mounting plate, the transmission assembly is connected to the movable output end of the driving component, and the transmission assembly is housed between the first mounting plate and the second mounting plate. The lead screw assembly is connected to the transmission assembly, the lead screw assembly is arranged along the first direction, and the movable end of the lead screw assembly is connected to the lifting plate to drive the lifting plate to move up and down.

[0015] In one embodiment of the present invention, the control unit further includes a sensing component, which includes a sensing sheet and a sensing receiver. The sensing sheet is connected to the lifting plate of the mounting mechanism, and the sensing sheet and the sensing receiver are adjacent to each other. When the sensing sheet is driven to move, it can trigger the sensing receiver to output the position signal of the sensing sheet to the control unit.

[0016] In one embodiment of the present invention, the first sleeve includes a sleeve body and a protective sleeve arranged along the coaxial axis, the sleeve body being connected to the protective sleeve; the limiting hole is provided in the sleeve body, and the end cap assembly is connected to the protective sleeve.

[0017] In one embodiment of the present invention, the end cap assembly includes a first end cap and a second end cap, the first end cap and the second end cap being respectively assembled to the end of the first sleeve.

[0018] In one embodiment of the present invention, the second sleeve is further provided with a through hole assembly for gas interaction. The through hole assembly is arranged at intervals along the circumference of the second sleeve, and the through hole assembly includes at least one through hole disposed in the cylinder wall of the second sleeve.

[0019] In one embodiment of the present invention, the outer wall of the second sleeve is further provided with a groove structure, and the through hole assembly is located in the area where the groove structure is located.

[0020] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0021] The camera device of this invention comprises a housing, a camera unit, and a control unit. The camera unit includes a camera body, a lens assembly, and a focusing assembly. Driven by the focusing assembly, the lens assembly adjusts the distance between itself and the workpiece under test, thereby achieving focus adjustment to acquire images that meet specified requirements. Furthermore, the lens assembly remains within a sealed sleeve mechanism during operation, effectively preventing dust and other contaminants from entering the lens assembly. The camera device of this invention enables fully automatic focusing, and the fully enclosed lens module isolates it from the external environment, providing high sealing performance and good anti-contamination capabilities, thus enhancing its stability and durability in complex industrial environments. This also ensures the accuracy of image acquisition, thereby guaranteeing the accuracy of the detection results and avoiding misjudgments. Attached Figure Description

[0022] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0023] Figure 1 This is a first-view schematic diagram of the overall structure of the camera device according to a preferred embodiment of the present invention.

[0024] Figure 2 This is a second-view schematic diagram of the overall structure of the camera device according to a preferred embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the camera device according to a preferred embodiment of the present invention, excluding the housing.

[0026] Figure 4 This is a structural schematic diagram of the connecting block and the lifting plate of a preferred embodiment of the present invention.

[0027] Figure 5 This is a schematic diagram of the lens assembly and sleeve mechanism of a preferred embodiment of the present invention.

[0028] Figure 6 This is a schematic diagram of the sleeve mechanism of a preferred embodiment of the present invention.

[0029] Figure 7 This is a schematic diagram of the lens assembly and sleeve mechanism of a preferred embodiment of the present invention.

[0030] Figure 8 This is a first-view schematic diagram of the drive mechanism of a preferred embodiment of the present invention.

[0031] Figure 9 This is a second-view schematic diagram of the drive mechanism of a preferred embodiment of the present invention.

[0032] Explanation of reference numerals in the accompanying drawings: 1. Housing; 10. Base plate; 11. Side plate; 20. Camera body; 201. Slide locking screw; 21. Lens assembly; 22. Mounting mechanism; 220. Base plate; 221. Lifting plate; 222. First mounting plate; 223. Second mounting plate; 224. Camera adapter plate; 23. Drive mechanism; 230. Drive component; 231. Drive wheel; 232. Belt; 233. First driven wheel; 234. Second driven wheel; 235. Third driven wheel; 236. First tension wheel; 237. Second... 238. Tensioning wheel; 239. Third tensioning wheel; 2340. Fourth tensioning wheel; 2341. First lead screw; 2342. Second lead screw; 2343. Third lead screw; 24. Sleeve mechanism; 241. First sleeve; 242. Second sleeve; 2420. Through hole assembly; 2421. Groove structure; 243. Limiting component; 244. End cap assembly; 2441. First end cap; 2442. Second end cap; 25. Connecting block; 250. Connecting groove; 251. Connecting groove notch; 252. Clearance hole; 30. Sensing plate; 31. Sensing receiver end. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention. Example 1

[0034] Reference Figure 1 As shown, this utility model discloses a camera device, including a housing 1. The housing 1 includes a base plate 10 and a side plate 11. The base plate 10 and the side plate 11 are connected to form an accommodating cavity with an opening at one end. In addition, the base plate 10 has a mounting hole.

[0035] The camera device further includes a camera unit, which includes a camera body 20, a focusing component and a lens assembly 21. The camera body 20 is mounted on one end of the housing 1 along a first direction and is fitted into the opening.

[0036] The lens assembly 21 is raised and lowered under the drive of the focusing assembly to adjust the distance between the lens assembly 21 and the test object, thereby adjusting the focal length of the lens assembly 21.

[0037] Specifically, the focusing assembly is partially housed in the housing 1, and the focusing assembly includes a mounting mechanism 22, a driving mechanism 23, and a sleeve mechanism 24.

[0038] The sleeve mechanism includes a first sleeve 241, a second sleeve 242, a limiting member 243, and an end cap assembly 244. The first sleeve 241 is connected to the mounting mechanism. The second sleeve 242 is housed within the first sleeve 241 and is coaxially and movably connected to the first sleeve 241, fitting snugly against it. The limiting member 243 protrudes radially from the outer wall of the second sleeve 242 and is fixedly connected to the second sleeve 242. The first sleeve 241 has a limiting hole extending in a first direction. The limiting member 243 can move within the limiting hole and is connected to the driving mechanism 23 to move up and down under the drive of the driving mechanism 23.

[0039] The lens assembly 21 is housed within the second sleeve 242, and the lens assembly 21 is tightly connected to the inner wall of the second sleeve 242. The end cap assembly 244 is connected to the end of the first sleeve 241 to seal the first sleeve 241, so that the first sleeve 241 forms a relatively sealed space that is isolated from the external environment. Thus, the lens assembly 21 can move along the first direction within the sealed space to achieve focal length adjustment.

[0040] In detail, the mounting hole of the base plate 10 can accommodate the passage of the first sleeve 241, and the opening is tightly fitted with the first sleeve 241, so that the housing 1 can also play a role in dust prevention and pollution isolation to a certain extent.

[0041] This configuration also effectively prevents dust and contaminants from entering the lens assembly 21 and the camera body 20, prevents dust accumulation and circuit corrosion inside the camera body 20, and avoids the deposition of particulate matter on the surface of the CMOS / CCD (Complementary Metal-Oxide-Semiconductor / charge coupled device) inside the camera body 20, which would affect imaging uniformity. It also reduces the intrusion of moisture or corrosive gases, thereby preventing short circuits or oxidation of circuit board components.

[0042] The camera device also includes a control unit, which is communicatively connected to the camera unit to control the focusing component to adjust the focal length of the camera unit.

[0043] Therefore, it can be understood that the camera device protected by this utility model includes a housing, a camera unit, and a control unit. The camera unit includes a camera body, a lens assembly, and a focusing assembly. The lens assembly, driven by the focusing assembly, can adjust the distance between itself and the workpiece under test, thereby achieving focus adjustment to acquire an image that meets the specified requirements. Furthermore, the lens assembly of this utility model remains within a sealed sleeve mechanism during operation, effectively preventing dust and other contaminants from entering the lens assembly. The camera device of this utility model can achieve fully automatic focusing, and the lens module is a fully enclosed design, isolating it from the external environment, thus possessing high sealing performance and good anti-contamination capabilities, improving its stability and durability when working in complex industrial environments. This also ensures the accuracy of image acquisition, thereby ensuring the accuracy of the detection results and avoiding misjudgments.

[0044] Furthermore, the camera device of this invention can be applied to complex working environments, including but not limited to highly polluted / dust environments (such as metal processing, precision component testing, etc.).

[0045] It should be noted that in this embodiment, the first direction is the same as the axial direction of the sleeve mechanism 24.

[0046] Furthermore, the limiting member 243 includes at least one limiting pin, which protrudes from the outer wall of the second sleeve. In a preferred embodiment, two limiting pins are provided, and the two limiting pins are symmetrically arranged on the second sleeve.

[0047] Furthermore, the focusing assembly also includes a connecting block 25, and the limiting member 243 is detachably connected to the connecting block 25. The connecting block 25 is connected to the movable end of the driving mechanism 23, so that when the driving mechanism 23 is working, it can drive the connecting block 25 to move, thereby driving the limiting member 243 to move synchronously, and thus the limiting member 243 drives the lens assembly 21 to move synchronously.

[0048] In a preferred embodiment, the connecting block 25 includes a connecting groove 250, a connecting groove notch 251, and a clearance hole 252. The connecting block 25 has an annular structure. Specifically, the clearance hole 252 is located in the middle of the connecting block 25 to allow the sleeve mechanism 24 to pass through. The connecting groove 250 is formed circumferentially inward along the clearance hole 252 on the connecting block 25. The limiting member can be engaged with the connecting groove 250. The connecting groove notch 251 is located at the edge of the connecting groove 250. The limiting member 243 can be embedded into the connecting groove 250 through the connecting groove notch. Then, the limiting member 243 is rotated horizontally so that the limiting member 243 can be confined within the connecting groove 250, thereby ensuring a relatively stable connection between the sleeve mechanism 24 and the connecting block 25. This arrangement also facilitates the disassembly and assembly of the sleeve mechanism 24 to a certain extent, so as to facilitate the replacement or repair of the lens assembly 21.

[0049] In a preferred embodiment, the mounting mechanism 22 includes a base plate 220, a lifting plate 221, a first mounting plate 222, a second mounting plate 223, and a camera adapter plate 224 arranged sequentially at intervals along a first direction. The base plate 220 is fixedly connected to the housing 1. The connecting block 25 is assembled to the lifting plate 221, thereby allowing the lifting plate 221 to connect with the limiting member 243. The lifting plate 221 is also connected to the movable end of the drive mechanism 23; the drive mechanism 23 is installed within the mounting space formed by the first mounting plate and the second mounting plate, and the camera body 20 is assembled to the camera adapter plate 224.

[0050] In detail, the drive mechanism 23 includes a drive component 230, a transmission assembly, and a lead screw assembly. The drive component 230 is mounted on the first mounting plate 222. The transmission assembly is connected to the movable output end of the drive component 230 and is housed between the first mounting plate 222 and the second mounting plate 223. The lead screw assembly is connected to the transmission assembly and is arranged along the first direction. The movable end of the lead screw assembly is connected to the lifting plate 221 to drive the lifting plate 221 to rise and fall.

[0051] The driving component 230 includes, but is not limited to, a stepper motor. The output end of the driving component 230 is arranged along the first direction.

[0052] In a preferred embodiment, the transmission assembly includes a drive wheel 231, a driven wheel assembly, a belt 232, and a tensioner assembly. The driven wheel assembly includes a first driven wheel 233, a second driven wheel 234, and a third driven wheel 235 disposed on the first mounting plate 222. The drive wheel 231 is coaxially connected to the output end of the drive member 230 and is capable of rotating in the horizontal direction. The belt 232 is sequentially wound around the drive wheel 231, the first driven wheel 233, the second driven wheel 234, and the third driven wheel 235, and is tensioned by the tensioner assembly. The drive wheel 231, the first driven wheel 233, the second driven wheel 234, and the third driven wheel 235 are respectively disposed at the four corners of the first mounting plate 222.

[0053] In detail, the tensioning pulley assembly includes a first tensioning pulley 236, a second tensioning pulley 237, a third tensioning pulley 238, and a fourth tensioning pulley 239 spaced apart on the first mounting plate 222. The belt 232 is sequentially wound around the inner sides of the first tensioning pulley 236, the second tensioning pulley 237, the third tensioning pulley 238, and the fourth tensioning pulley 239 to form tension.

[0054] In a preferred embodiment, the lead screw assembly includes a first lead screw 2340, a second lead screw 2341, and a third lead screw 2342. The first lead screw 2340 is coaxially connected to the first driven wheel 233, and its movable end is connected to the lifting plate 221. The second lead screw 2341 is coaxially connected to the second driven wheel 234, and its movable end is connected to the lifting plate 221. The third lead screw 2342 is coaxially connected to the third driven wheel 235, and its movable end is connected to the lifting plate 221.

[0055] In addition, in order to monitor the position of the lens assembly 21 in real time, the control unit also includes a sensing component, which includes a sensing plate 30 and a sensing receiver 31. The sensing plate 30 is connected to the lifting plate 221 of the mounting mechanism 22, and the sensing plate 30 is adjacent to the sensing receiver 31. When the sensing plate 30 is driven to move, it can trigger the sensing receiver 31 to output the position signal of the sensing plate 30 to the control unit, thereby monitoring the position of the lifting plate 221 in real time, so as to achieve the purpose of monitoring the position of the lens assembly 21.

[0056] Specifically, the end cap assembly 244 includes a first end cap 2441 and a second end cap 2442, which are respectively assembled to the ends of the first sleeve 241.

[0057] In a preferred embodiment, the first sleeve 241 includes a sleeve body 2410 and a protective sleeve 2411 arranged along the coaxial axis, the sleeve body 2410 being connected to the protective sleeve 2411; the limiting hole is provided in the sleeve body 2410, and the second end cap 2442 of the end cap assembly 244 is connected to the protective sleeve 2411.

[0058] To ensure that the air pressure of the sleeve mechanism 24 is consistent with that of the external environment, the second sleeve 242 is also provided with a through hole assembly 2420 for gas interaction. Multiple sets of through hole assemblies 2420 are provided, and the multiple sets of through hole assemblies 2420 are arranged at intervals along the circumference of the second sleeve 242. Each set of through hole assemblies 2420 includes at least one through hole provided in the cylinder wall of the second sleeve 242.

[0059] In a preferred embodiment, the outer wall of the second sleeve 242 is further provided with a groove structure 2421, and the through hole assembly 2420 is located in the area where the groove structure 2421 is located. This arrangement facilitates the interaction between the gas inside the second sleeve 242 and the outside environment, while preventing impurities from entering the second sleeve 242.

[0060] In a preferred embodiment, the mounting mechanism 22 is provided with a slide locking screw 201 on its edge. The slide locking screw 201 can lock the housing 1 and the mounting mechanism 22 together to ensure the stability and compactness of the structure. When disassembly is required, the housing 1 and the mounting mechanism 22 can be removed by rotating the slide locking screw 201.

[0061] In detail, the slide locking screw 201 is installed on the second mounting plate 223. Multiple slide locking screws 201 are provided. Example 2

[0062] This utility model also discloses a detection device, including at least one camera device as described in Embodiment 1.

[0063] In the description of this utility model, it should be understood that 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 indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0064] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0065] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A camera device, characterized in that: include, case; A camera unit includes a camera body, a focusing assembly, and a lens assembly. The camera body is mounted on one end of the housing along a first direction, and the lens assembly is raised and lowered by the focusing assembly. The focusing assembly is partially housed in the housing. The focusing assembly includes a mounting mechanism, a driving mechanism, and a sleeve mechanism. The sleeve mechanism includes a first sleeve, a second sleeve, a limiting member, and an end cap assembly. The first sleeve is connected to the mounting mechanism. The second sleeve is housed in the first sleeve and is coaxially and movably connected to the first sleeve. The limiting member protrudes radially from the outer wall of the second sleeve. The first sleeve has a limiting hole extending in a first direction. The limiting member can move within the limiting hole. The limiting member is connected to the driving mechanism to move up and down under the drive of the driving mechanism. The lens assembly is housed in the second sleeve and connected to the second sleeve. The end cap assembly is connected to both ends of the first sleeve in the first direction to close the first sleeve. A control unit, which is communicatively connected to the camera unit, controls the focusing assembly to adjust the focal length of the camera unit.

2. The camera device according to claim 1, characterized in that: The limiting member includes at least one limiting pin, and at least one of the limiting pins protrudes from the outer wall of the second sleeve.

3. A camera device according to claim 1 or 2, characterized in that: The focusing assembly further includes a connecting block, the limiting member is detachably connected to the connecting block, and the connecting block is connected to the movable end of the driving mechanism; the connecting block includes a clearance hole, a connecting groove, and a connecting groove notch, the clearance hole is located in the middle of the connecting block to allow the sleeve mechanism to pass through, the connecting groove is formed circumferentially inward along the clearance hole on the connecting block, the limiting member can be engaged with the connecting groove, the connecting groove notch is located at the edge of the connecting groove, and the limiting member can be embedded into the connecting groove through the connecting groove notch.

4. A camera device according to claim 1, characterized in that: The mounting mechanism includes a base plate, a lifting plate, a first mounting plate, a second mounting plate, and a camera adapter plate arranged sequentially at intervals along a first direction. The base plate is fixedly connected to the housing. The lifting plate is connected to the limiting member and is also connected to the movable end of the drive mechanism. The drive mechanism is installed in the mounting space formed by the first mounting plate and the second mounting plate. The camera body is assembled on the camera adapter plate.

5. A camera device according to claim 4, characterized in that: The driving mechanism includes a driving component, a transmission assembly, and a lead screw assembly. The driving component is mounted on the first mounting plate. The transmission assembly is connected to the movable output end of the driving component and is housed between the first mounting plate and the second mounting plate. The lead screw assembly is connected to the transmission assembly and is arranged along the first direction. The movable end of the lead screw assembly is connected to the lifting plate to drive the lifting plate to move up and down.

6. A camera device according to claim 1, characterized in that: The control unit also includes a sensing component, which includes a sensing plate and a sensing receiver. The sensing plate is connected to the lifting plate of the mounting mechanism, and the sensing plate and the sensing receiver are adjacent to each other. When the sensing plate is driven to move, it can trigger the sensing receiver to output the position signal of the sensing plate to the control unit.

7. A camera device according to claim 1, characterized in that: The first sleeve includes a sleeve body and a protective sleeve arranged along the coaxial axis, the sleeve body being connected to the protective sleeve; the limiting hole is provided in the sleeve body, and the end cap assembly is connected to the protective sleeve.

8. A camera device according to claim 1 or 7, characterized in that: The end cap assembly includes a first end cap and a second end cap, which are respectively assembled to the ends of the first sleeve.

9. A camera device according to claim 1, characterized in that: The second sleeve is further provided with a through-hole assembly for gas interaction, the through-hole assembly being arranged at intervals along the circumference of the second sleeve, the through-hole assembly including at least one through hole disposed in the cylinder wall of the second sleeve.

10. A camera device according to claim 9, characterized in that: The outer wall of the second sleeve is also provided with a groove structure, and the through hole assembly is located in the area where the groove structure is located.

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