Lens cover assembly, industrial camera and visual device

Abstract

The utility model discloses a lens cover assembly, an industrial camera and a visual device, comprising a lens cover, a cavity formed in the lens cover, a connection port formed at one end of the lens cover, a threaded connection portion formed on the inner wall of the connection port and used for being in threaded connection with a lens mount of the camera, and a first sealing member, a sealing mounting groove located in one side of the threaded connecting part is formed in the inner wall of the connecting opening, one part of the first sealing piece is embedded into the sealing mounting groove, and the other part of the first sealing piece protrudes out of the sealing mounting groove; the width of the part, embedded in the sealing installation groove, of the first sealing piece is larger than that of the part, protruding out of the sealing installation groove, of the first sealing piece, the first sealing piece is used for being arranged between the outer wall of the lens seat and the inner wall of the lens cover to form sealing when the lens cover is in threaded connection with the lens seat, and a sealing structure is formed at the front end of the lens cover. The camera provided by the utility model has a better sealing effect and can adapt to more application scenes.

Description

Lens hood assemblies, industrial cameras and vision devices Technical Field

[0001] This utility model relates to the field of machine vision technology, specifically to a lens cover assembly with better sealing performance, an industrial camera, and a vision device. Background Technology

[0002] With the development of technology, image data has become an important source of information, and image acquisition equipment used to collect image data is widely used in various fields such as industrial logistics, autonomous driving, and intelligent robots.

[0003] Industrial cameras are commonly used devices for image data acquisition. In practical applications, in some harsh environments (such as dusty and humid environments), the sealing performance of industrial cameras in related technologies cannot prevent dust and moisture from entering the camera, thus limiting the application scope of industrial cameras.

[0004] Therefore, designing an industrial camera with better sealing performance is a worthwhile consideration. Summary of the Invention

[0005] This invention aims to address one of the technical problems in related technologies to a certain extent. To this end, this invention provides a lens cover assembly, an industrial camera, and a vision device, which have better sealing performance, and the overall sealing rating of the vision device can reach IP67.

[0006] To achieve the above objectives, a first aspect of this utility model discloses a lens hood assembly, including a lens hood with a cavity formed inside. One end of the lens hood has a connection port, and the inner wall of the connection port has a threaded connection portion for threaded connection with a camera lens mount. The lens hood assembly further includes a first sealing member. A sealing mounting groove is formed on the inner wall of the connection port, located on one side of the threaded connection portion. A portion of the first sealing member is embedded in the sealing mounting groove, and another portion of the first sealing member protrudes from the sealing mounting groove. The width of the portion of the first sealing member embedded in the sealing mounting groove is greater than the width of the portion protruding from the sealing mounting groove. The first sealing member is used to form a seal between the outer wall of the lens mount and the inner wall of the lens hood when the lens hood and the lens mount are threadedly connected. A sealing structure is formed at the front end of the lens hood.

[0007] Furthermore, the lens cover includes an adapter cylinder and a first cylinder. The central cavity of the adapter cylinder forms the connection port, and the front end of the first cylinder forms a sealing structure. The adapter cylinder is detachably connected to the first cylinder and is connected to the lens mount. The lens cover assembly includes a second sealing member, which is disposed between the inner wall and the outer wall of the junction between the adapter cylinder and the outer shell.

[0008] Furthermore, an external thread is formed on the outer wall of one end of the adapter cylinder, and an internal thread is formed on the inner wall of one end of the first cylinder that mates with the external thread on the outer wall of the adapter cylinder. The first cylinder and the adapter cylinder are threadedly connected.

[0009] Furthermore, an annular protrusion is formed on the inner wall of the front end of the lens cover, and an annular adhesive groove is formed on the rear end face of the annular protrusion. The lens cover assembly includes a first light-transmitting plate, which is disposed on the rear end face of the annular protrusion and cooperates with the adhesive filled in the adhesive groove to seal the front end of the lens cover.

[0010] Furthermore, the sealing mounting groove is disposed between the threaded connection portion and the end of the connection port.

[0011] The second aspect of this utility model discloses an industrial camera, including a camera body and a lens mount. The lens mount is disposed at the front end of the camera body and is used to be sleeved and connected to the lens cover assembly of the first aspect. The outer wall of the lens mount is formed with an external thread that mates with the threaded connection portion and a sealing step that corresponds to the sealing mounting groove. When the lens cover assembly and the lens mount are sleeved and connected, the first sealing member abuts against the outer side of the sealing step.

[0012] Furthermore, the outer wall of the front end of the sealing step is formed with a guide slope so that the diameter of the front end of the sealing step is smaller than the diameter of the rear end of the sealing step.

[0013] Furthermore, the camera body includes a housing, a second light-transmitting plate, an electrical module, and at least one plug assembly. The electrical module is disposed in the mounting cavity of the housing. The lens mount is disposed at the front end of the housing and forms a light-transmitting channel, which communicates with the mounting cavity of the housing. The second light-transmitting plate is disposed within the light-transmitting channel and is sealed to the housing, thereby sealing and isolating the front end of the mounting cavity of the housing from the outside. The plug assembly is disposed at the rear end of the housing. One end of the plug assembly is placed in the mounting cavity and electrically connected to the electrical module. The other end of the plug assembly penetrates the housing for connection with an external cable. A sealed structure is formed between the plug assembly and the housing.

[0014] Furthermore, the housing includes a front cover, a middle frame, and a rear cover connected in sequence. The lens mount is disposed at the front end of the front cover. The front cover, the middle frame, and the rear cover together define the mounting cavity. The light-transmitting channel passes through the lens mount and the front cover. The front cover and the middle frame, and the middle frame and the rear cover are respectively sleeved and sealed together.

[0015] Furthermore, the rear end of the front cover forms a rearwardly protruding annular front sealing platform, and the front end of the rear cover forms a forward-protruding annular rear sealing platform. The middle frame is cylindrical, and the front and rear ends of the middle frame are respectively fitted onto the front and rear sealing platforms. The camera body includes a third sealing element and a fourth sealing element. The third sealing element is disposed between the inner wall of the middle frame and the outer wall of the front sealing platform to seal the connection between the middle frame and the front cover. The fourth sealing element is disposed between the inner wall of the middle frame and the outer wall of the rear sealing platform to seal the connection between the middle frame and the rear cover.

[0016] Furthermore, the front and rear ends of the middle frame are respectively provided with first connecting holes, and the front cover and the rear cover are respectively provided with second connecting holes corresponding to the first connecting holes, and the axis of the first connecting hole and the axis of the corresponding second connecting hole form a distance.

[0017] Furthermore, a plug mounting hole is formed on the rear end face of the rear cover, which passes through the mounting cavity. The plug assembly includes a plug body and a fifth sealing member. The plug body is inserted into the plug mounting hole. The fifth sealing member is provided on the outer wall of the plug body and the inner wall of the plug mounting hole to seal the plug mounting hole.

[0018] Furthermore, the rear cover includes a rear cover body and a plug mounting cylinder. The plug mounting cylinder protrudes from the rear end face of the rear cover body. The rear end face of the rear cover body is provided with the plug mounting hole. The plug mounting cylinder forms an insertion channel with an insertion opening. The plug mounting hole and the insertion channel communicate with each other. One end of the plug body extends into the insertion channel. The inner wall of the plug mounting cylinder is spaced from the outer wall of the plug body. The plug assembly also includes a sixth sealing member. The sixth sealing member is disposed within the space and is used to abut against the end of the external connector inserted into the space to form a seal.

[0019] Furthermore, an annular groove and a protruding annular support are formed on the inner wall of the plug mounting cylinder. One end face of the annular support faces the insertion port and is connected to the side of the annular groove. A portion of the sixth sealing member is embedded in the annular groove, and one end face abuts against the end face of the annular support. The end of the external connector inserted into the plug mounting cylinder can press the sixth sealing member together with the annular support.

[0020] The third aspect of this utility model discloses a vision device, including a lens cover assembly of the first aspect, a lens assembly, and an industrial camera of the second aspect. The lens cover is threadedly connected to the lens mount, and the lens mount and the lens cover together define a sealed space. The lens assembly is disposed within the sealed space.

[0021] The vision device in this technical solution features a lens hood detachably connected to the camera body. During use, this completely encloses the lens assembly, providing excellent protection. Furthermore, the inclusion of a sealing mounting groove and a first sealing element ensures complete enclosure of the lens assembly when used with the camera, further enhancing its protection. The lens hood's two ends (when connected to the industrial camera) form sealing structures, placing the lens assembly within a completely sealed space. Combined with the camera body's own sealing structure, this creates a comprehensive camera seal, enabling the camera to withstand dusty and humid environments and expanding its application range. Additionally, the first sealing element's width within the sealing mounting groove exceeds that of any protruding part, ensuring stable installation and preventing the lens hood from falling out during frequent disassembly and reassembly, thus guaranteeing a stable seal.

[0022] These features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. The preferred embodiments or means of this utility model will be shown in detail in conjunction with the accompanying drawings, but this is not intended to limit the technical solution of this utility model. In addition, each of these features, elements and components appearing in the following text and drawings is multiple and is labeled with different symbols or numbers for convenience, but all represent parts with the same or similar structure or function. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings:

[0024] Figure 1 is a side sectional view of the camera according to one embodiment of the present invention;

[0025] Figure 2.1 is a side cross-sectional view of the lens cover assembly according to one embodiment of the present invention;

[0026] Figure 2.2 is an exploded view of the lens cover assembly structure according to one embodiment of the present invention;

[0027] Figure 3 is an enlarged view of point A in Figure 2.1;

[0028] Figure 4 is an enlarged view of point B in Figure 2.1;

[0029] Figure 5 is a side cross-sectional view of the camera body according to one embodiment of the present invention;

[0030] Figure 6 is an enlarged view of point C in the figure;

[0031] Figure 7 is an exploded view of the overall structure of the camera according to one embodiment of the present invention;

[0032] Figure 8 is a structural diagram of the camera according to one embodiment of the present invention.

[0033] in,

[0034] 10. Camera body; 11. Housing; 111. Front cover; 1111. Front sealing platform; 112. Middle frame; 1121. First connecting hole; 1122. Second connecting hole; 113. Rear cover; 1131. Rear cover body; 1132. Plug mounting cylinder; 1133. Annular support platform; 1134. Rear sealing platform; 12. Second light-transmitting plate; 13. Electrical module; 14. Plug assembly; 141. Plug body; 142. Fifth seal; 143. Sixth seal; 15. Third seal; 16. Fourth seal; 17. Connector; 18. Light transmission channel; 19. Lens mount; 191. External thread; 192. Sealing step; 193. Guide slope;

[0035] 20. Lens hood assembly; 21. Lens hood; 211. Adapter cylinder; 2111. Alignment slope; 212. First cylinder; 2121. Annular boss; 2122. Glue groove; 22. First seal; 23. Second seal; 24. First light-transmitting plate; 25. Anti-slip pattern;

[0036] 30. Lens assembly;

[0037] 40. External cables. Detailed Implementation

[0038] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this utility model and should not be construed as limiting it.

[0039] The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this utility model. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0040] Referring to Figures 2.1 and 2.2, a first aspect of this utility model discloses a lens hood assembly, including a lens hood 21, a cavity formed inside the lens hood 21, a connection port formed at one end of the lens hood 21, and a threaded connection portion formed on the inner wall of the connection port, the threaded connection portion being used for threaded connection with a camera lens mount 19.

[0041] The lens cover assembly 20 further includes a first seal 22. A sealing mounting groove is formed on the inner wall of the connection port on one side of the threaded connection portion. A portion of the first seal 22 is embedded in the sealing mounting groove, and another portion of the first seal 22 protrudes from the sealing mounting groove. The width of the portion of the first seal 22 embedded in the sealing mounting groove is greater than the width of the portion of the first seal 22 protruding from the sealing mounting groove. The first seal 22 is used to form a seal between the outer wall of the lens mount 19 and the inner wall of the lens cover 21 when the lens cover 21 and the lens mount 19 are threadedly connected. The front end of the lens cover 21 forms a sealing structure.

[0042] In this embodiment, the lens cover 21 and the outer shell 11 are threaded together, which facilitates the installation and removal of the lens cover 21 and the outer shell 11, and has a self-locking effect, improving the stability of the installation. Moreover, the threaded connection structure has a certain sealing effect, which can assist the first sealing element 22 to achieve a better sealing effect.

[0043] In this embodiment, the camera lens assembly 30 and the housing 11 are generally detachably connected (generally, an internal thread structure is provided on the inner wall of the housing, and an external thread 1114 is provided on the outer wall of the lens assembly 30 to cooperate with the internal thread on the inner wall of the housing, forming a threaded engagement). In this way, different lens assemblies 30 can be selected as needed to connect to the front end of the housing 11. The threaded engagement structure can realize the quick assembly and disassembly of the lens assembly 30 and the housing 11.

[0044] The camera in this embodiment also includes a lens cover 21, which is also detachably connected to the outer shell 11. In use, the lens cover 21 is positioned on the front side of the outer shell 11 and covers the lens assembly 30 inside, as shown in Figures 1 and 2.1. This prevents the lens assembly 30 from being exposed during operation, improving the protection of the lens assembly 30. In addition, the rear end of the lens cover 21 in this embodiment is provided with a first sealing member 22 at the connection between it and the outer shell 11. The first sealing member 22 can seal the joint between the lens cover 21 and the outer shell 11, sealing any small gaps that may exist at the joint, preventing dust and moisture from entering the lens cover 21 from the joint. Moreover, the front end of the lens cover 21 is also set as a sealing structure. Combined with the sealing structure of the camera body 10 itself, the lens assembly 30 can be placed in a completely sealed space, allowing the camera to adapt to dusty and humid environments, thus improving the application range of the camera.

[0045] In this embodiment, the detachable connection structure between the lens cover 21 and the outer shell 11 is not specifically limited. For example, it can be set as a threaded fit, a snap fit, or an insert fit.

[0046] In this embodiment, the specific structure and material of the first sealing element 22 are not specifically limited. In actual setting, a suitable sealing material can be selected as needed to achieve the corresponding sealing effect. The corresponding cross-sectional structure of the first sealing element 22 can also be designed according to the structure of the mating part of the lens cover 21 and the outer shell 11. For example, it can be set as a conventional "O" type structure or an irregular structure.

[0047] In this embodiment, the location of the first sealing element 22 is not specifically limited. For example, the first sealing element 22 can be located on the rear or front side of the connection between the lens cover 21 and the outer shell 11.

[0048] In this embodiment, the sealing structure of the front end of the lens cover 21 is not specifically limited. For example, the entire lens cover 21 can be made of transparent material with only a rear opening, so that the front end will not have a problem of poor sealing. Of course, when the front end of the lens cover 21 is made of an open structure, the front end of the lens cover 21 can be sealed by other components in conjunction with the sealing structure.

[0049] In this embodiment, the sealing mounting groove can be set on the lens mount (outer wall) or on the lens cover 21 (inner wall). By controlling the relative dimensions of the depth of the sealing mounting groove and the width of the first sealing member 22, the width of the first sealing member 22 that is inserted into the sealing mounting groove is greater than the width of the first sealing member 22 that protrudes from the sealing mounting groove. This gives the side wall of the sealing mounting groove a larger contact area with the first sealing member 22, reducing the risk of the first sealing member 22 detaching from the sealing mounting groove due to friction between the first sealing member 22 and the outer shell 11 during the installation and removal of the lens cover 21, and making the installation of the first sealing member 22 more stable.

[0050] During installation, the first sealing element 22 is first embedded in the sealing mounting groove, and then the lens cover 21 is assembled with the outer shell 11. In this embodiment, the first sealing element 22 is set as an annular part, which forms a seal in the circumference of the mating part with the outer shell 11 to achieve a better sealing effect. During assembly, the first sealing element 22 will undergo elastic deformation under the squeezing action between the outer wall of the lens cover and the lens mount 19, thereby producing a sealing effect.

[0051] The mating parts of the first seal 22 are spaced apart from the external threads 1114 on the lens mount 19 to prevent the first seal 22 from being pressed against the threads and causing leakage.

[0052] As one embodiment of this utility model, referring to Figure 2.2, the lens cover 21 includes an adapter cylinder 211 and a first cylinder 212. The central cavity of the adapter cylinder 211 forms the connection port, and the front end of the first cylinder 212 forms a sealing structure. The adapter cylinder 211 is detachably connected to the first cylinder (212) and is connected to the lens mount 19. The lens cover assembly 20 includes a second sealing member 23, which is disposed between the inner wall and the outer wall of the joint between the adapter cylinder 211 and the lens mount 19.

[0053] In this embodiment, the lens cover 21 is divided into two parts: an adapter cylinder 211 for connecting to the lens mount 19 and a first cylinder 212 for forming the cover space. In this embodiment, the adapter cylinder 211 and the first cylinder 212 are detachably connected. In the actual assembly process, one assembly method is to assemble the adapter cylinder 211 and the first cylinder 212 together and then assemble them onto the lens mount 19; another assembly method is to first connect the adapter cylinder 211 to the lens mount 19, and then connect the first cylinder 212 to the adapter cylinder 211.

[0054] The lens cover 21 in this embodiment includes a two-part structure (adapter cylinder 211 and first cylinder 212) to facilitate the replacement of the lens assembly 30. Specifically, when the lens assembly 30 needs to be replaced, it is only necessary to remove the first cylinder 212 from the adapter cylinder 211, without removing the adapter cylinder 211 from the lens mount 19, which can ensure the sealing effect at the first sealing member 22.

[0055] In one embodiment of the present invention, an external thread is formed on the outer wall of one end of the adapter cylinder 211, and an internal thread is formed on the inner wall of one end of the first cylinder 212 that matches the external thread on the outer wall of the adapter cylinder 211. The first cylinder 212 and the adapter cylinder 211 are threadedly connected.

[0056] In this embodiment, the connections between the adapter cylinder 211 and the first cylinder 212, the lens assembly 30 and the outer shell 11 can all be set to similar threaded connection structures, so that the connection structures of multiple connected components are unified, making operation more convenient.

[0057] In one embodiment of the present invention, an annular protrusion 2121 is formed on the inner wall of the front end of the lens cover 21, and an annular adhesive groove 2122 is formed on the rear end face of the annular protrusion 2121. The lens cover assembly 20 includes a first light-transmitting plate 24, which is disposed on the rear end face of the annular protrusion 2121 and cooperates with the adhesive filled in the adhesive groove 2122 to seal the front end of the lens cover 21.

[0058] In this embodiment, the front end of the first cylindrical body 212 is an open structure. The opening at the front end of the first cylindrical body 212 is sealed by the first light-transmitting plate 24. In this way, the first light-transmitting plate 24 can achieve a seal without blocking light from reaching the lens assembly 30. Referring to Figure 3, an annular boss 2121 for installing the first light-transmitting plate 24 is formed on the inner wall of the front end of the first cylindrical body 212 in this embodiment. A glue groove 2122 is formed on the annular boss 2121. During assembly, glue is applied to the glue groove 2122 by a dispensing device. Generally, UV glue (ultraviolet curing glue) can be used. Then, the first light-transmitting plate 24 is placed on the opening of the glue groove 2122. The first light-transmitting plate 24 is fixed in the first cylindrical body 212 by the curing of the glue. The annular glue groove 2122 can also securely fix the first light-transmitting plate 24 in a circumferential direction. Moreover, the glue itself can also form a seal.

[0059] Of course, in actual setup, the first light-transmitting plate 24 can also be fixed and sealed in the first cylinder 212 by setting a sealing ring in conjunction with the connector 17.

[0060] As one embodiment of this utility model, referring to Figure 4, the sealing mounting groove is disposed between the threaded connection portion and the end of the connection port. Thus, when the lens cover 21 is connected to the camera body, the first seal 22 can seal the threaded mating portion of the lens cover 21 and the lens mount 19, preventing corrosion and damage to the threaded structure in harsh environments.

[0061] The outer walls of the adapter cylinder 211 and the outer walls of the first cylinder 212 are respectively formed with raised anti-slip patterns 25.

[0062] In this embodiment, both the outer walls of the adapter cylinder 211 and the first cylinder 212 are provided with easy-to-operate anti-slip patterns 25, as shown in Figure 2.2. A ring-shaped operating platform can be provided on the outer wall of the adapter cylinder 211. The outer wall of the ring-shaped operating platform is flush with the outer wall of the first cylinder 212, so that the overall size of the lens cover 21 is uniform and easier to produce. The anti-slip patterns 25 are circumferentially distributed and have a certain length in the axial direction, which can increase the area of ​​the operating part and improve the convenience of operation.

[0063] In this embodiment, the specific form and texture of the anti-slip pattern 25 are not specifically limited.

[0064] The second aspect of this utility model discloses an industrial camera, including a camera body 10 and a lens mount 19. The lens mount 19 is disposed at the front end of the camera body 10 and is used to be sleeved and connected to the lens cover assembly 20 of the first aspect. The outer wall of the lens mount 19 is formed with an external thread that mates with the threaded connection portion and a sealing step 192 that corresponds to the sealing mounting groove. When the lens cover assembly 20 and the lens mount 19 are sleeved and connected, the first sealing member 22 abuts against the outer side of the sealing step 192.

[0065] As one embodiment of this utility model, referring to Figure 4, the outer wall of the front end of the sealing step 192 is formed with a guide slope 193, so that the diameter of the front end of the sealing step 192 is smaller than the diameter of the rear end of the sealing step 192. By providing a guide slope 193 at the front end of the sealing step 192, it serves to guide the first sealing element 22 during installation, avoiding damage to the first sealing element 22 during assembly.

[0066] As one embodiment of this utility model, referring to Figure 5, the camera body 10 includes a housing 11, a second light-transmitting plate 12, an electrical module 13, and at least one plug assembly 14. The electrical module 13 is disposed in the mounting cavity of the housing 11, the lens mount 19 is disposed at the front end of the housing 11, the light-transmitting channel 18 communicates with the mounting cavity of the housing 11, the second light-transmitting plate 12 is disposed in the light-transmitting channel 18 and is sealed to the housing 11 so that the front end of the mounting cavity of the housing 11 is sealed and isolated from the outside. The plug assembly 14 is disposed at the rear end of the housing 11. One end of the plug assembly 14 is placed in the mounting cavity and electrically connected to the electrical module 13, and the other end of the plug assembly 14 penetrates the housing 11 for docking with an external cable 40. A sealed structure is formed between the plug assembly 14 and the housing 11.

[0067] In this embodiment, the second light-transmitting plate 12 is sealed in the light-transmitting channel 18 at the front end of the housing 11 (the specific sealing structure can be formed by a sealing ring or by applying adhesive to the first light-transmitting plate 24 as mentioned above). While sealing the housing 11 mounting cavity, it also allows light to pass through the second light-transmitting plate 12 and reach the electrical module 13 (such as a photosensitive element) inside the housing 11 mounting cavity.

[0068] In this embodiment, the plug assembly 14 at the rear end of the housing 11 is used to realize the electrical connection between the external cable 40 and the internal electrical module 13. Since the mounting part of the plug assembly 14 needs to penetrate the mounting cavity inside the housing 11, by forming a sealed structure between the plug assembly 14 and the housing 11, the overall sealing effect of the housing 11 can be guaranteed, thereby ensuring the overall sealing effect of the industrial camera.

[0069] As one embodiment of this utility model, referring to Figure 5, the outer shell 11 includes a front cover 111, a middle frame 112, and a rear cover 113 connected in sequence. The lens mount 19 is located at the front end of the front cover 111. The light transmission channel 18 passes through the lens mount 19 and the front cover 111. The lens assembly 30 and the lens hood 21 are respectively sleeved and connected to the inner wall and outer wall of the lens mount. The rear end of the front cover 111 forms a rearwardly protruding annular front sealing platform 1113, and the front end of the rear cover 113 forms a forwardly protruding annular rear sealing platform. The middle frame 112 is cylindrical, and its front and rear ends are respectively fitted onto the front sealing platform 1113 and the rear sealing platform. The camera body 10 includes a third sealing member 15 and a fourth sealing member 16. The third sealing member 15 is disposed between the inner wall of the middle frame 112 and the outer wall of the front sealing platform 1113 to seal the connection between the middle frame 112 and the front cover 111. The fourth sealing member is disposed between the inner wall of the middle frame 112 and the outer wall of the rear sealing platform to seal the connection between the middle frame 112 and the rear cover 113.

[0070] In this embodiment, the connecting parts between the front cover 111, the middle frame 112, and the rear cover 113 in the outer shell 11 are all provided with sealing elements (third sealing element 15 and fourth sealing element 16). By setting the middle frame 112 as a cylindrical structure, it is only necessary to set the sealing elements at the connecting parts at both ends of the middle frame 112. Of course, in actual installation, the middle frame 112 and one of the front cover 111 or the rear cover 113 can also be set as an integral structure. For example, if the middle frame 112 and the front cover 111 are set as an integral structure, it is only necessary to connect it to the rear cover 113 during assembly. This can reduce the number of connecting parts, and correspondingly reduce the number of sealing elements, thus making it easier to achieve a seal.

[0071] When the lens cover 21 is installed with the camera body, in order to avoid interference between the lens cover 21 and the connecting screws on the camera body, an avoidance slope 2121 can be formed on the outer wall of the rear end of the lens cover 21 (the rear end of the adapter cylinder 211), as shown in Figure 7.

[0072] As shown in Figure 7, in this embodiment, the rear end of the front cover 111 is provided with a front sealing platform 1113, and the rear cover 113 is provided with a rear sealing platform 1134. During assembly, the middle frame 112, the front sealing platform 1113, and the rear sealing platform form a surface contact fit, which improves the stability of the fit. Moreover, the sidewalls of the front sealing platform 1113 and the rear sealing platform 1134 are convenient for setting annular sealing grooves for installing the corresponding third sealing element 15 and fourth sealing element, so as to achieve circumferential sealing of the connection part. When setting the sealing groove, the width of the sealing groove can be set to be slightly smaller than the width of the corresponding sealing element. In this way, when the sealing element is installed in the corresponding sealing groove, there will be a certain pre-pressure, reducing the problem of the sealing element easily detaching from the sealing groove, and making the installation of the sealing element more stable.

[0073] In actual design, in order to ensure a better sealing effect, multiple corresponding third seals 15 and fourth seals 16 can be set at the corresponding joints to achieve multiple seals.

[0074] Of course, it is conceivable that in actual design, the sealing structure of the connection parts of multiple components on the outer shell 11 is not limited to the sealing through the third seal 15 and the fourth seal 16 mentioned above. Other forms of sealing structure can also be set, such as end face sealing.

[0075] Referring to Figure 7, in order to improve the sealing effect of the third seal 15 and the fourth seal 16, the front end and rear end of the middle frame 112 in one embodiment of this example are respectively provided with a first connecting hole 1121, and the front cover 111 and the rear cover 113 are respectively provided with a second connecting hole 1122 corresponding to the first connecting hole 1121. The axis of the first connecting hole 1121 and the axis of the corresponding second connecting hole 1122 form a gap.

[0076] In this embodiment, the middle frame 112, the front cover 111, and the rear cover 113 are connected by screws passing through the first connecting hole 1121 and the corresponding second connecting hole 1122. Moreover, the first connecting hole 1121 can be set as a tapered hole, so that the tapered hole can guide the connector 17 during installation.

[0077] Furthermore, by forming a gap between the axes of the first connecting hole 1121 and the corresponding second connecting hole 1122 in this embodiment, i.e., the first connecting hole 1121 and the second connecting hole 1122 are eccentrically set, so that when connected by the connector 17, the front cover 111, the rear cover 113 and the middle frame 112 can be tightened at the same time as the screw is tightened, ensuring reliable compression of the middle frame 112 sealing gasket, avoiding insufficient sealing compression rate due to the assembly gap of the threaded hole, and thus ensuring a reliable sealing effect.

[0078] As one embodiment of this utility model, referring to Figures 5, 6, and 7, a plug mounting hole is formed on the rear end face of the rear cover 113, which passes through the mounting cavity. The plug assembly 14 includes a plug body 141 and a fifth sealing member 142. The plug body 141 is inserted into the plug mounting hole. The fifth sealing member 142 is provided on the outer wall of the plug body 141 and the inner wall of the plug mounting hole to seal the plug mounting hole.

[0079] In this embodiment, the interface is connected to the external cable 40 via the plug assembly 14, which is more convenient for setting up a sealed structure compared to the structure of the network port connection in related technologies.

[0080] In this embodiment, the plug assembly 14 includes a plug body 141 and a fifth seal 142. As shown in Figure 6, during installation, a sealing groove for installing the fifth seal 142 can be provided on the outer wall of the plug body 141. The fifth seal 142 is embedded in the corresponding sealing groove and is pressed against the inner wall of the plug mounting hole to form a sealing effect.

[0081] In this embodiment, the plug assembly 14 can be selected with different specifications of aviation plugs as needed, such as M8 and M12 aviation plugs.

[0082] As one embodiment of this utility model, referring to Figure 6, the rear cover 113 includes a rear cover body 1131 and a plug mounting cylinder 1132. The plug mounting cylinder 1132 protrudes from the rear end face of the rear cover body 1131. The rear end face of the rear cover body 1131 is provided with a plug mounting hole. An insertion channel with an insertion opening is formed on the plug mounting cylinder 1132. The plug mounting hole and the insertion channel communicate with each other. One end of the plug body 141 extends into the insertion channel. The inner wall of the plug mounting channel and the outer wall of the plug body 141 are separated. A gap is formed to accommodate the external connector 17. An annular groove and a protruding annular support platform 1133 are formed on the inner wall of the plug mounting cylinder 1132. One end face of the annular support platform 1133 faces the insertion port and is connected to the side of the annular groove. The plug assembly 14 also includes a sixth sealing member 143. The sixth sealing member 143 is disposed in the annular groove, and one end abuts against the end face of the annular support platform 1133 facing the insertion port, and is used to abut against the end of the external connector 17 inserted into the gap to form a seal.

[0083] In this embodiment, the plug assembly 14 and the rear cover form a double sealing effect (a fifth seal 142 and a sixth seal 143). The fifth seal 142 is a normal seal (the sealing effect is always present), while the sixth seal 143 only produces a sealing effect when it is mated with the external connector 17 and is squeezed by the external connector 17. The external connector 17 can be an external cable 40 or a plug fixture (the plug body 141 can be sealed by the plug fixture when the camera is not in operation), which can achieve a double sealing effect and ensure the sealing effect of the plug part.

[0084] Referring to Figures 1 to 8, a third aspect of this utility model discloses a vision device, including a lens cover assembly 20 and a lens assembly 30 of the first aspect, and an industrial camera of the second aspect. The lens cover 21 is threadedly connected to the lens mount 19, and the lens mount 19 and the lens cover 21 together define a sealed space. The lens assembly 30 is disposed within the sealed space.

[0085] The vision device and industrial camera of this utility model include a lens cover 21, wherein a sealing structure is provided at the connection between the lens cover 21 and the camera body 10, and a first light-transmitting plate 24 and a corresponding sealing structure are provided at the front end of the lens cover 21. In addition, the camera body 10 as a whole also forms a sealing structure (through the sealing at the second light-transmitting plate 12, the sealing structure at the connection between the front cover 111, the middle frame 112 and the rear cover 113, and the sealing structure at the position of the plug assembly 14). It can be seen that the parts of the camera body that may communicate with the outside are provided with corresponding sealing structures, so that the internal mounting cavity of the camera body 10 is in a sealed space (and thus the electrical module 13 is in a sealed space). Moreover, when the lens cover 21 is connected to the camera body 10, the lens assembly 30 is set in the sealed space. Thus, the industrial camera and vision device as a whole achieve complete sealing, and the sealing level can reach IP67, which can make the camera adapt to dusty and high-humidity working environments and improve the application range of industrial cameras and vision devices.

[0086] The above are merely specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A lens hood assembly, comprising a lens hood (21) having a cavity formed therein, a connection port being formed at one end of the lens hood (21), and a threaded connection portion being formed on the inner wall of the connection port, the threaded connection portion being used for threaded connection with a lens mount (19) of a camera, characterized in that, The lens cover assembly (20) further includes a first seal (22). A sealing mounting groove is formed on the inner wall of the connection port on one side of the threaded connection portion. A portion of the first seal (22) is embedded in the sealing mounting groove, and another portion of the first seal (22) protrudes from the sealing mounting groove. The width of the portion of the first seal (22) embedded in the sealing mounting groove is greater than the width of the portion of the first seal (22) protruding from the sealing mounting groove. The first seal (22) is used to form a seal between the outer wall of the lens mount (19) and the inner wall of the lens cover (21) when the lens cover (21) and the lens mount (19) are threadedly connected. The front end of the lens cover (21) forms a sealing structure.

2. The lens hood assembly as claimed in claim 1, characterized in that, The lens cover (21) includes an adapter cylinder (211) and a first cylinder (212). The central cavity of the adapter cylinder (211) forms the connection port. The front end of the first cylinder (212) forms a sealing structure. The adapter cylinder (211) and the first cylinder (212) are detachably connected. The adapter cylinder (211) is connected to the lens mount (19). The lens cover assembly (20) includes a second sealing member (23). The second sealing member (23) is disposed between the inner wall and the outer wall of the joint between the adapter cylinder (211) and the outer shell (11).

3. The lens hood assembly as described in claim 2, characterized in that, An external thread (191) is formed on the outer wall of one end of the adapter cylinder (211), and an internal thread is formed on the inner wall of one end of the first cylinder (212) to match the external thread (191) on the outer wall of the adapter cylinder (211). The first cylinder (212) and the adapter cylinder (211) are threadedly connected.

4. The lens hood assembly as described in any one of claims 1 to 3, characterized in that, An annular boss (2121) is formed on the inner wall of the front end of the lens cover (21), and an annular groove (2122) is formed on the rear end face of the annular boss (2121). The lens cover assembly (20) includes a first light-transmitting plate (24), which is disposed on the rear end face of the annular boss (2121) and cooperates with the adhesive filled in the groove (2122) to seal the front end of the lens cover (21).

5. The lens hood assembly as described in any one of claims 1 to 3, characterized in that, The sealing mounting groove is disposed between the threaded connection and the end of the connection port.

6. An industrial camera, comprising a camera body (10) and a lens mount (19), wherein the lens mount (19) is disposed at the front end of the camera body (10), characterized in that, The lens mount (19) is used to be sleeved and connected to the lens cover assembly (20) according to any one of claims 1 to 5. The outer wall of the lens mount (19) is formed with an external thread (191) that mates with the threaded connection portion and a sealing step (192) that corresponds to the sealing mounting groove. When the lens cover assembly (20) and the lens mount (19) are sleeved and connected, the first seal (22) abuts against the outer side of the sealing step (192).

7. The industrial camera as described in claim 6, characterized in that, The front end outer wall of the sealing step (192) is formed with a guide slope (193) so that the front end diameter of the sealing step (192) is smaller than the rear end diameter of the sealing step (192).

8. The industrial camera as described in claim 6, characterized in that, The camera body (10) includes a housing (11), a second light-transmitting plate (12), an electrical module (13), and at least one plug assembly (14). The electrical module (13) is disposed in the mounting cavity of the housing (11). The lens mount (19) is disposed at the front end of the housing (11) and forms a light-transmitting channel (18). The light-transmitting channel (18) communicates with the mounting cavity of the housing (11). The second light-transmitting plate (12) is disposed within the light-transmitting channel (18) and is connected to the mounting cavity of the housing (11). The outer shell (11) is sealed to isolate the front end of the mounting cavity of the outer shell (11) from the outside. The rear end of the outer shell (11) is provided with the plug assembly (14). One end of the plug assembly (14) is placed in the mounting cavity of the outer shell (11) and electrically connected to the electrical module (13). The other end of the plug assembly (14) passes through the outer shell (11) and is used to connect with the external cable (40). A sealed structure is formed between the plug assembly (14) and the outer shell (11).

9. The industrial camera as described in claim 8, characterized in that, The outer casing (11) includes a front cover (111), a middle frame (112), and a rear cover (113) connected in sequence. The lens mount (19) is disposed at the front end of the front cover (111). The front cover (111), the middle frame (112), and the rear cover (113) together define the mounting cavity. The light-transmitting channel (18) passes through the lens mount (19) and the front cover (111). The front cover (111) and the middle frame, and the middle frame (112) and the rear cover (113) are respectively fitted and sealed together.

10. The industrial camera as described in claim 9, characterized in that, The rear end of the front cover (111) forms a rearward protruding annular front sealing platform (1111), and the front end of the rear cover (113) forms a forward protruding annular rear sealing platform. The middle frame (112) is cylindrical, and the front and rear ends of the middle frame (112) are respectively fitted outside the front sealing platform (1111) and the rear sealing platform (1134). The camera body (10) includes a third sealing member (15) and a fourth sealing member (16). The third sealing member (15) is disposed between the inner wall of the middle frame (112) and the outer wall of the front sealing platform (1111) to seal the connection between the middle frame (112) and the front cover (111). The fourth sealing member is disposed between the inner wall of the middle frame (112) and the outer wall of the rear sealing platform (1134) to seal the connection between the middle frame (112) and the rear cover (113).

11. The industrial camera as described in claim 10, characterized in that, The front and rear ends of the middle frame (112) are respectively provided with first connecting holes (1121), and the front cover (111) and the rear cover (113) are respectively provided with second connecting holes (1122) corresponding to the first connecting holes (1121). The axis of the first connecting hole (1121) and the axis of the corresponding second connecting hole (1122) form a gap.

12. The industrial camera as described in claim 9, characterized in that, The rear end face of the rear cover (113) has a plug mounting hole that passes through the mounting cavity. The plug assembly (14) includes a plug body (141) and a fifth seal (142). The plug body (141) is inserted into the plug mounting hole. The fifth seal (142) is provided on the outer wall of the plug body (141) and the inner wall of the plug mounting hole to seal the plug mounting hole.

13. The industrial camera as described in claim 12, characterized in that, The rear cover (113) includes a rear cover body (1131) and a plug mounting cylinder (1132). The plug mounting cylinder (1132) protrudes from the rear end face of the rear cover body (1131). The rear end face of the rear cover body (1131) is provided with the plug mounting hole. The plug mounting cylinder (1132) forms an insertion channel with an insertion port. The plug mounting hole and the insertion channel are interconnected. One end of the plug body (141) extends into the insertion channel. The inner wall of the plug mounting cylinder (1132) is spaced from the outer wall of the plug body (141). The plug assembly (14) also includes a sixth sealing member (143). The sixth sealing member (143) is disposed in the space and is used to abut against the end of the external connector (17) inserted into the space to form a seal.

14. The industrial camera as described in claim 13, characterized in that, The inner wall of the plug mounting cylinder (1132) has an annular groove and a protruding annular support platform (1133). One end face of the annular support platform (1133) faces the insertion port and is connected to the side of the annular groove. A portion of the sixth seal (143) is embedded in the annular groove, and one end face abuts against the end face of the annular support platform (1133). The end of the external connector (17) inserted into the plug mounting cylinder (1132) can press the sixth seal (143) together with the annular support platform (1133).

15. A vision device comprising a lens hood assembly (20) according to any one of claims 1 to 5, a lens assembly (30), and an industrial camera according to any one of claims 6 to 14, characterized in that, The lens cover (21) is threadedly connected to the lens mount (19), and the lens mount (19) and the lens cover (21) together define a sealed space, and the lens assembly (30) is disposed within the sealed space.

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