An endoscope with a zoom camera module

Abstract

The utility model discloses an endoscope with zoom camera module, including zoom lens, power mechanism and sealing mechanism, and zoom lens includes connecting lens barrel, the fixed lens assembly of far end and the fixed lens assembly of near end that are connected to the axial both ends of lens barrel to focus on the assembly that is located in the lens barrel, and the power mechanism includes the traction silk that is connected with focus on the assembly and the operating assembly that is connected with traction silk, and the sealing sleeve assembly that is sealed to set up at the connecting position of traction silk and zoom lens is included to the sealing sleeve assembly that is set up in the traction silk periphery, the fixed lens assembly of far end and the fixed lens assembly of near end are connected to the axial both ends of lens barrel and make the lens barrel inside closed, and focus on the assembly is located in the lens barrel, can prevent moisture from entering, and the sealing sleeve assembly is set up in the traction silk periphery, and the sealing sleeve assembly is sealed to set up at the connecting position of traction silk and zoom lens, guarantee good sealing performance, can prevent moisture from entering the lens barrel from the connecting position of traction silk and zoom lens and influence the imaging quality.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an endoscope with a zoom camera module. Background Technology

[0002] An electronic endoscope is an electro-optical instrument integrating advanced technologies such as optics, mechanics, and electronics, which can be inserted into the cavities of industrial equipment or the cavities of human bodies and organs for direct observation, diagnosis, and treatment. The camera module in an endoscope is a key core component, and its sealing performance directly affects the product's lifespan. If the camera module's seal fails, external dust falling onto the CMOS sensor will affect image quality; furthermore, external moisture entering the camera module can cause problems such as image fogging. Therefore, the sealing performance of the camera module is crucial for endoscopes.

[0003] Existing endoscopes with fixed-focus camera modules have a relatively simple structure, consisting of a fixed lens group, a CMOS sensor, and a PCBA. Since the components are all fixed, good sealing performance can be achieved by using sealant between them. However, endoscopes with zoom camera modules, compared to those with fixed-focus modules, have an additional focusing lens group. This focusing lens group is typically moved by a steel wire, the other end of which is connected to the operating unit. However, the sealing at the connection between the distal end of the steel wire and the zoom camera module is poor, allowing moisture to easily enter the zoom camera module through the gap between the wire and the module, causing fogging on the zoom camera module and affecting image quality. Utility Model Content

[0004] Therefore, this utility model aims to solve the problems of poor sealing performance and difficulty in sealing existing movable endoscopes, and thus provides an endoscope with a zoom camera module.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] An endoscope with a zoom camera module includes:

[0007] A zoom lens includes a lens barrel, a distal fixed lens assembly and a proximal fixed lens assembly respectively connected to the two axial ends of the lens barrel, and a focusing assembly located inside the lens barrel;

[0008] The power mechanism includes a traction wire assembly and an operating assembly. The traction wire assembly includes a traction wire, one end of which passes through the lens barrel and is connected to the focusing assembly, and the other end of which is fixedly connected to the operating assembly. The operating assembly is adapted to drive the focusing assembly to reciprocate along the optical axis of the zoom lens via the traction wire to adjust the focal length of the zoom lens.

[0009] The sealing mechanism includes a sealing sleeve assembly sleeved around the traction wire, the sealing sleeve assembly being sealed at the connection position between the traction wire and the zoom lens.

[0010] Furthermore, the lens barrel includes a guide block with a guide hole inside, and one end of the traction wire passes through the guide hole and is connected to the focusing assembly; the sealing sleeve assembly includes an adapter steel pipe, a hose, and a protective steel pipe, the adapter steel pipe being sealed and connected to the outer periphery of one end of the guide block; the protective steel pipe is sleeved on the outer periphery of the traction wire and spaced apart from the adapter steel pipe, and the hose is sealed and connected between the adapter steel pipe and the protective steel pipe.

[0011] Furthermore, the lens barrel includes a fixed sleeve and a sealing cover. The fixed sleeve is a cylindrical structure with an opening groove on one side of the circumference. The sealing cover is sealed to the opening groove on the outer circumference of the fixed sleeve. The focusing assembly is slidably installed inside the fixed sleeve along the optical axis.

[0012] Furthermore, the guiding direction of the opening groove and the axial direction of the guide block are arranged in the same direction; the traction wire assembly also includes a guide shaft fixedly connected to the distal end of the traction wire, the guide shaft is slidably connected to the guide hole of the guide block, and the focusing assembly is fixedly connected to the guide shaft.

[0013] Furthermore, a positioning block is fixedly provided on the distal fixed lens assembly, and a through hole coaxially provided in the positioning block is provided in the positioning block. A focusing screw is threadedly connected in the through hole, one end of the focusing screw extends into the lens barrel, and the distal end of the guide shaft reciprocates in the area between the focusing screw and the guide block; the proximal end of the sealing cover is sealed to the guide block, and the distal end is sealed to the positioning block.

[0014] Furthermore, the guide block is provided with a guide sleeve with a reduced outer diameter at its proximal end, and the transition steel pipe is sealed around the outer periphery of the guide sleeve.

[0015] Furthermore, the operating component is mounted on a housing, and the proximal end of the protective steel tube extends into the housing; the sealing mechanism further includes a proximal sealing component that is sealed between the protective steel tube and the housing, the proximal sealing component including a sealing shaft and a sealing sleeve, the sealing shaft being sleeved on the outer periphery of the protective steel tube, one end of the sealing sleeve being sealed on the sealing shaft, and the other end being sealed on the outer periphery of the output end of the operating component, the traction wire passing through the protective steel tube and being fixedly connected to the output end of the operating component.

[0016] Furthermore, the operating component is connected to the sealing sleeve via a sealing slider. A connection hole is provided in the end of the sealing slider away from the operating component. The end of the traction wire away from the focusing component is fixedly connected to the connection hole. The sealing sleeve is sealed and fitted onto the outer end of the sealing slider.

[0017] Furthermore, a first sealing groove is provided on the inner peripheral wall of the sealing sleeve near the sealing slider, and a second sealing groove is provided on the outer peripheral wall of the sealing shaft near the sealing slider; a first sealing ring is provided in the first sealing groove between the sealing sleeve and the sealing slider, and a second sealing ring is provided in the second sealing groove between the sealing sleeve and the sealing shaft.

[0018] Furthermore, the operating components include a lever, a crank, a connecting rod, a drive slider, and a rotating shaft. The lever is connected to the rotor of the rotating shaft, the crank is fixedly connected to the outer periphery of the rotating shaft's turntable, the connecting rod is rotatably connected between the crank and the drive slider, and the end of the drive slider away from the connecting rod is fixedly connected to the sealing slider.

[0019] The technical solution of this utility model has the following advantages:

[0020] 1. The endoscope with a zoom camera module provided by this utility model can form a closed space inside the endoscope tube by connecting the distal fixed lens assembly and the proximal fixed lens assembly to both ends of the endoscope tube along the axial direction. The focusing assembly is located inside the closed endoscope tube, which can prevent moisture from entering and affecting the imaging effect of the endoscope. By making the sealing sleeve assembly fit around the traction wire and sealing the connection position between the traction wire and the zoom lens, good sealing performance is ensured, which can prevent moisture from entering the endoscope tube from the connection position between the traction wire and the zoom lens, thus avoiding fogging of the zoom camera module and affecting the imaging quality.

[0021] 2. The endoscope with a zoom camera module provided by this utility model includes a guide block in the endoscope barrel. The guide block has a guide hole inside, and one end of the traction wire passes through the guide hole and connects to the focusing assembly. The sealing sleeve assembly includes an adapter steel pipe, a flexible hose, and a protective steel pipe. The adapter steel pipe is sealed to the outer periphery of one end of the guide block. The protective steel pipe is sleeved around the outer periphery of the traction wire and spaced apart from the adapter steel pipe. The flexible hose is sealed between the adapter steel pipe and the protective steel pipe. This configuration allows the adapter steel pipe to seal the area where the traction wire enters the guide block. The protective steel pipe, sleeved around the outer periphery of the traction wire, and the flexible hose sealingly connecting the protective steel pipe and the adapter steel pipe, provides sealing protection for the portion of the traction wire located outside the endoscope barrel. This ensures a good seal for the traction wire portion entering industrial equipment cavities or human body cavities and organ cavities, preventing moisture from entering the camera module during use and causing issues such as image fogging.

[0022] 3. The endoscope with a zoom camera module provided by this utility model includes a fixed sleeve and a closed cover. The fixed sleeve is a cylindrical structure with an opening groove on one side of the circumference, and the closed cover is sealed to the opening groove on the outer circumference of the fixed sleeve. The focusing assembly is slidably installed in the fixed sleeve along the optical axis. With this design, the fixed sleeve can guide the focusing assembly when it slides to focus, thus maintaining the stability of the focusing sliding.

[0023] 4. The endoscope with a zoom camera module provided by this utility model has a positioning block fixedly installed on the distal fixed lens assembly. The positioning block has a through hole coaxial with the guide shaft, and a focusing screw is threaded into the through hole. One end of the focusing screw extends into the endoscope barrel, and the distal end of the guide shaft reciprocates in the area between the focusing screw and the guide block. The proximal end of the sealing cover is sealed to the guide block, and the distal end is sealed to the positioning block. With this configuration, the maximum focusing distance of the focusing assembly within the endoscope barrel can be adjusted by adjusting the distance the distal end of the focusing screw extends into the endoscope barrel.

[0024] 5. The endoscope with a zoom camera module provided by this utility model has a guide sleeve with a reduced outer diameter at the proximal end of the guide block, and a sealing sleeve for the adapter steel pipe is located on the outer periphery of the guide sleeve. This arrangement can improve the connection stability between the adapter steel pipe and the guide block. By setting the guide sleeve, the sealing sleeve assembly can be prevented from detaching from the zoom lens due to the excessive weight of the zoom lens. At the same time, the guide sleeve can guide the guide shaft, thereby improving the stability of the traction wire driving the focusing assembly during sliding focusing.

[0025] The six utility models provide an endoscope with a zoom camera module. The operating component is installed in a housing, and the proximal end of a protective steel tube extends into the housing. The sealing mechanism also includes a proximal sealing component that is sealed between the protective steel tube and the housing. This configuration ensures a seal at the connection between the traction wire and the operating component, effectively preventing external moisture from entering through this connection.

[0026] 7. The endoscope with a zoom camera module provided by this utility model includes a proximal sealing assembly comprising a sealing shaft and a sealing sleeve. The sealing shaft is sleeved around the outer periphery of the protective steel tube, one end of the sealing sleeve is sealed onto the sealing shaft, and the other end is sealed around the outer periphery of the output end of the operating component. The traction wire passes through the protective steel tube and is fixedly connected to the output end of the operating component. This configuration, through the cooperation of the sealing shaft and the sealing sleeve, achieves a seal at the connection between the traction wire and the operating component, ensuring a sealing effect and effectively preventing external moisture from entering through the connection between the traction wire and the operating component.

[0027] 8. The endoscope with a zoom camera module provided by this utility model has an operating component connected to a sealing sleeve via a sealing slider. A connection hole is provided at the end of the sealing slider away from the operating component, and the end of the traction wire away from the focusing component is fixedly connected to the connection hole. The sealing sleeve is fitted over the outer end of the sealing slider. This configuration achieves a sealing effect at the connection between the sealing slider and the traction wire, preventing external moisture from entering through this connection.

[0028] 9. The endoscope with a zoom camera module provided by this utility model has a first sealing groove on the inner peripheral wall of the sealing sleeve near the sealing slider, and a second sealing groove on the outer peripheral wall of the sealing shaft near the sealing slider. A first sealing ring is disposed in the first sealing groove between the sealing sleeve and the sealing slider, and a second sealing ring is disposed in the second sealing groove between the sealing sleeve and the sealing shaft. This configuration strengthens the connection and sealing effect between the sealing slider and the sealing sleeve through the first sealing ring, and strengthens the connection and sealing effect between the sealing sleeve and the sealing shaft through the second sealing ring, thereby improving the connection stability between the traction wire assembly and the operating assembly. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 A schematic diagram of the structure of an endoscope with a zoom camera module provided in an embodiment of this utility model;

[0031] Figure 2 This is a schematic diagram showing the connection relationship between the zoom lens and the sealing mechanism in this embodiment;

[0032] Figure 3 This is an exploded view of the zoom lens in this embodiment;

[0033] Figure 4 This is a schematic diagram of the structure of the remote fixed lens assembly in this embodiment;

[0034] Figure 5 This is a schematic diagram of the focusing component in this embodiment;

[0035] Figure 6 This is a schematic diagram of the guide shaft in this embodiment;

[0036] Figure 7 This is a schematic diagram of the near-end fixed lens assembly in this embodiment;

[0037] Figure 8 This is a schematic diagram showing the connection relationship between the power mechanism and the sealing mechanism in this embodiment;

[0038] Figure 9 This is a schematic diagram of the sealing slider in this embodiment;

[0039] Figure 10 This is a schematic diagram illustrating the structure of the sealing sleeve in this embodiment;

[0040] Figure 11 This is a schematic diagram of the sealing shaft in this embodiment;

[0041] Explanation of reference numerals in the attached figures:

[0042] 0. Housing; 1. Zoom lens; 11. Mounting sleeve; 111. Opening slot; 12. Sealing cover; 13. Remote fixed lens assembly; 131. Remote fixed lens barrel; 132. Remote fixed lens a; 133. Remote fixed lens b; 14. Focusing assembly; 141. Moving lens barrel; 142. Moving lens; 143. Groove; 15. Near-end fixed lens assembly; 151. Near-end fixed lens barrel; 152. Near-end fixed lens; 153. Near-end fixed surface; 6. Lens mount; 17. Positioning block; 171. Through hole; 172. Focusing screw; 173. Remote positioning surface; 8. Moving block; 181. Mounting hole; 182. Front positioning surface; 183. Rear positioning surface; 19. Guide block; 191. Guide sleeve; 192. Guide hole; 2. Power unit 21. Traction wire assembly; 211. Traction wire; 212. Guide shaft; 213. Guide mounting hole; 22. Operating assembly; 221. Lever; 222. Crank; 223. Connecting rod; 224. Drive slider; 225. Rotating shaft; 3. Sealing mechanism; 31. Sealing sleeve assembly; 311. Adapter steel pipe; 312. Hose; 313. Protective steel pipe; 32. Proximal sealing assembly; 321. Sealing shaft; 322. Sealing sleeve; 323. Sealing slider; 324. Connecting hole; 325. First sealing groove; 326. Second sealing groove; 327. First sealing ring; 328. Second sealing ring; 329. First bracket; 330. Second bracket; 331. First slot; 332. Second slot; 333. Fixing hole; 334. Connecting shaft. Detailed Implementation

[0043] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0044] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0047] like Figures 1-11 An endoscope with a zoom camera module is shown, comprising a zoom lens 1, a power mechanism 2, and a sealing mechanism 3. Specifically, the zoom lens 1 includes a lens barrel, a distal fixed lens assembly 13 and a proximal fixed lens assembly 15 respectively connected to the two axial ends of the lens barrel, and a focusing assembly 14 located inside the lens barrel. The power mechanism 2 includes a traction wire assembly 21 and an operating assembly 22. The traction wire assembly 21 includes a traction wire 211, one end of which passes through the lens barrel and is connected to the focusing assembly 14, and the other end of which is fixedly connected to the operating assembly 22. The operating assembly 22 is adapted to drive the focusing assembly 14 to reciprocate along the optical axis of the zoom lens 1 via the traction wire 211 to adjust the focal length of the zoom lens 1. The sealing mechanism 3 includes a sealing sleeve assembly 31 sleeved on the outer periphery of the traction wire 211, and the sealing sleeve assembly 31 is sealed at the connection position between the traction wire 211 and the zoom lens 1.

[0048] This endoscope with a zoom camera module, through the connection of the distal fixed lens assembly 13 and the proximal fixed lens assembly 15 to both ends of the endoscope tube along the axial direction, can form a closed space inside the endoscope tube. The focusing assembly 14 is located inside the closed endoscope tube, which can prevent moisture from entering and affecting the imaging effect of the endoscope. By making the sealing sleeve assembly fit around the traction wire 211 and sealing the connection position between the traction wire 211 and the zoom lens 1, good sealing performance is ensured, which can prevent moisture from entering the endoscope tube from the connection position between the traction wire 211 and the zoom lens 1, and avoid causing the zoom camera module to fog up the image and affect the imaging quality.

[0049] In this embodiment, the lens barrel includes a guide block 19, and the guide block 19 has a guide hole 192 inside. One end of the traction wire 211 is connected to the focusing assembly 14 through the guide hole. With this configuration, the installation convenience of the focusing assembly 14 can be improved by using a separate lens barrel. Specifically, the sealing sleeve assembly 31 includes an adapter steel pipe 311, a flexible hose 312, and a protective steel pipe 313. The adapter steel pipe 311 is sealed and connected to the outer periphery of one end of the guide block 19. The protective steel pipe 313 is sleeved on the outer periphery of the traction wire 211 and spaced apart from the adapter steel pipe 311. The flexible hose 312 is sealed and connected between the adapter steel pipe 311 and the protective steel pipe 313. This configuration allows for sealing of the section of the traction wire 211 entering the guide block 19 via the adapter steel pipe 311. A protective steel pipe 313 is fitted around the traction wire 211, and a flexible hose 312 provides a sealed connection between the protective steel pipe 313 and the adapter steel pipe 311. This seal protects the portion of the traction wire 211 located outside the lens barrel, ensuring a tight seal for the portion of the traction wire 211 that enters industrial equipment cavities or human body cavities and organ cavities. This prevents moisture from entering the camera module during use, thus avoiding issues such as image fogging.

[0050] In this embodiment, the adapter steel pipe 311 is glued or welded to the outer periphery of one end of the guide block 19; one end of the hose 312 is glued to the outer periphery of the adapter steel pipe 311, and the other end of the hose 312 is glued to the outer periphery of the protective steel pipe 313. This arrangement, through glued or welded connections, ensures the tightness and stability of the connection between structures, effectively guaranteeing the sealing effect at the structural joints.

[0051] In this embodiment, the lens barrel includes a fixed sleeve 11 and a sealing cover 12. The fixed sleeve 11 is a cylindrical structure with an opening groove 111 on one circumferential side. The sealing cover 12 is sealed and connected to the opening groove 111 on the outer circumference of the fixed sleeve 11. The focusing assembly 14 is slidably mounted inside the fixed sleeve 11 along the optical axis. This design allows the fixed sleeve 11 to guide the focusing assembly 14 during sliding focusing, maintaining stability during focusing. Specifically, the outer wall of the movable lens barrel 141 and the inner wall of the fixed sleeve 11 are both polished. This reduces frictional resistance and improves the smoothness of the lens movement. Specifically, the movable lens element 142 is bonded and fixed to the movable lens barrel 141.

[0052] In this embodiment, the guiding direction of the opening slot 111 is aligned with the axial direction of the guide block 19; the traction wire 211 assembly 21 further includes a guide shaft 212 fixedly connected to the distal end of the traction wire 211, the guide shaft 212 being slidably connected to the guide hole 192 of the guide block 19, and the focusing assembly 14 being fixedly connected to the guide shaft 212. Specifically, the side of the guide block 19 closest to the focusing assembly 14 is a proximal positioning surface.

[0053] Specifically, the guide sleeve 191 and the guide hole 192 on the guide shaft 212 are fitted with a small clearance. This setting can reduce the axial offset of the moving lens barrel 141 when it moves in the cavity of the fixed sleeve 11, and prevent the focusing assembly 14 from generating an overturning torque when pulled by the traction wire 211, which could cause problems such as jamming due to abnormal contact between the outer ring of the moving lens barrel 141 and the inner wall of the fixed sleeve 11.

[0054] In this embodiment, a positioning block 17 is fixedly mounted on the distal fixed lens assembly 13. A through hole 171, coaxially aligned with the guide shaft 212, is provided within the positioning block 17. A focusing screw 172 is threaded into the through hole 171, with one end of the focusing screw 172 extending into the lens barrel. The distal end of the guide shaft 212 reciprocates in the area between the focusing screw 172 and the guide block 19. The proximal end of the sealing cover 12 is sealed to the guide block 19, and the distal end is sealed to the positioning block 17. With this configuration, the maximum focusing distance of the focusing assembly 14 within the lens barrel can be adjusted by regulating the distance the distal end of the focusing screw 172 extends into the lens barrel.

[0055] In this embodiment, a guide sleeve 191 with a reduced outer diameter is provided at the proximal end of the guide block 19, and the adapter steel pipe 311 is sealed and fitted around the outer periphery of the guide sleeve 191. This arrangement can improve the connection stability between the adapter steel pipe 311 and the guide block 19. By setting the guide sleeve 191, the sealing sleeve assembly can be prevented from disengaging from the zoom lens 1 due to excessive weight. At the same time, the guide distance of the guide shaft 212 can be guided by the guide sleeve 191, thereby improving the stability of the traction wire 211 driving the focusing assembly 14 to perform sliding focusing. Specifically, the guide block 19 and the guide sleeve 191 are integrally formed, and the guide hole 192 passes through the guide block 19 and the guide sleeve 191.

[0056] In this embodiment, the remote fixed lens assembly 13 specifically includes a remote fixed lens barrel 131 sealed and installed inside one end of the fixed sleeve 11, and remote fixed lenses a132 and b133 installed on opposite sides of the remote fixed lens barrel 131. Specifically, the remote fixed lenses a132 and b133 are both bonded and fixed to the remote fixed lens barrel 131.

[0057] In this embodiment, the near-end fixed lens assembly 15 includes a near-end fixed lens barrel 151 and a near-end fixed lens 152 glued to the near-end fixed lens barrel 151. Specifically, the side of the positioning block 17 closest to the focusing assembly 14 is the far-end positioning surface 173.

[0058] In this embodiment, specifically, the movable block 18 is provided with a fixing mounting hole 181 for installing the traction wire assembly 21. The side of the movable block 18 near the distal fixing lens assembly 13 is the front positioning surface 182, and the side near the proximal fixing lens assembly 15 is the rear positioning surface 183.

[0059] In this embodiment, a movable block 18 extending out of the fixed sleeve 11 is integrally formed on the focusing assembly 14, and the movable block 18 is located between the guide block 19 and the positioning block 17.

[0060] In this embodiment, the focusing assembly 14 has two extreme positions within the fixed sleeve 11: the first extreme position is when the rear positioning surface 183 coincides with the near-end positioning surface, which is the rear focal position; the second extreme position is when the front positioning surface 182 coincides with the far-end positioning surface 173, which is the front focal position. Since machining errors occur during the manufacturing process of the optomechanical structural components, and assembly errors occur during assembly, the accumulation of these errors can easily lead to a deviation between the effective focal length and the theoretical design value. This deviation problem can be solved by opening a through hole 171 on the positioning block 17. Specifically, after the rear focal position is determined, the front focal position is adjusted by adjusting the focusing screw 172 installed on the through hole 171. The focusing screw 172 can effectively reduce the machining accuracy and assembly accuracy of the machined parts, effectively improving the yield rate.

[0061] In this embodiment, the operating component 22 is mounted on a housing 0, and the proximal end of the protective steel pipe 313 extends into the housing 0; the sealing mechanism 3 also includes a proximal sealing component 32 that is sealed between the protective steel pipe 313 and the housing 0. With this configuration, the proximal sealing component 32 can achieve a seal at the connection between the traction wire 211 and the operating component 22, ensuring a good seal and effectively preventing external moisture from entering from the connection between the traction wire 211 and the operating component 22.

[0062] In this embodiment, the proximal sealing assembly 32 includes a sealing shaft 321 and a sealing sleeve 322. The sealing shaft 321 is sleeved on the outer periphery of the protective steel pipe 313. One end of the sealing sleeve 322 is sealed on the sealing shaft 321, and the other end is sealed on the outer periphery of the output end of the operating assembly 22. The traction wire 211 passes through the protective steel pipe 313 and is fixedly connected to the output end of the operating assembly 22. With this configuration, the sealing shaft 321 and the sealing sleeve 322 can achieve a seal at the connection between the traction wire 211 and the operating assembly 22, ensuring a sealing effect and effectively preventing external moisture from entering from the connection between the traction wire 211 and the operating assembly 22.

[0063] In this embodiment, the operating component 22 is connected to the sealing sleeve 322 via a sealing slider 323. A connecting hole 324 is provided at the end of the sealing slider 323 furthest from the operating component 22. The end of the traction wire 211 furthest from the focusing component 14 is fixedly connected to the connecting hole 324. The sealing sleeve 322 is fitted over the outer end of the sealing slider 323. This arrangement achieves a sealing effect at the connection between the sealing slider 323 and the traction wire 211 through the sealing sleeve 322, preventing external moisture from entering from the connection point.

[0064] Specifically, a first groove 331 is formed on the outer peripheral wall of the sealing sleeve 322, and a second groove 332 is formed on the outer peripheral wall of the sealing shaft 321 at the end away from the sealing slider 323. A first bracket 329 is provided on the first groove 331, which abuts against the inner wall of the housing 0, and a second bracket 330 is provided on the second groove 332, which abuts against the inner wall of the housing 0. This arrangement can improve the stability of the near-end sealing assembly 32. Specifically, a base is provided on the inner wall of the housing 0, and both the first bracket 329 and the second bracket 330 are fixedly installed on the base by screws.

[0065] In this embodiment, a first sealing groove 325 is provided on the inner peripheral wall of the sealing sleeve 322 near the sealing slider 323, and a second sealing groove 326 is provided on the outer peripheral wall of the sealing shaft 321 near the sealing slider 323. A first sealing ring 327 is provided in the first sealing groove 325 between the sealing sleeve 322 and the sealing slider 323, and a second sealing ring 328 is provided in the second sealing groove 326 between the sealing sleeve 322 and the sealing shaft 321. This arrangement strengthens the connection and sealing effect between the sealing slider 323 and the sealing sleeve 322 through the first sealing ring 327, and strengthens the connection and sealing effect between the sealing sleeve 322 and the sealing shaft 321 through the second sealing ring 328, thereby improving the connection stability between the traction wire 211 assembly 21 and the operating assembly 22. Specifically, the sealing sleeve 322 is fixedly installed inside the housing 0 near the zoom lens 1. A movable cavity is provided inside the housing 0, with one end of the sealing sleeve 322 located inside the movable cavity and the other end extending out of the movable cavity.

[0066] In this embodiment, the operating component 22 includes a lever 221, a crank 222, a connecting rod 223, a drive slider 224, and a rotating shaft 225. The lever 221 is connected to the rotor of the rotating shaft 225. The crank 222 is fixedly connected to the outer periphery of the turntable of the rotating shaft 225. The connecting rod 223 is rotatably connected between the crank 222 and the drive slider 224. The end of the drive slider 224 away from the connecting rod 223 is fixedly connected to the sealing slider 323.

[0067] In this embodiment, the sealing sleeve assembly 31 and the second assembly effectively seal the zoom lens 1 and the power mechanism 2 of the endoscope, as well as the connection between the two mechanisms. When the endoscope is being repaired, the entire camera module and the power source of the operating unit can be disassembled as a whole. At this time, it is still in an effective sealed state, and there is no need to control its humidity separately. There is also no need to worry about tiny lubricating particles in the endoscope cavity entering the camera module and affecting the imaging quality.

[0068] In summary, this endoscope with a zoom camera module, by placing the distal fixed lens assembly 13 and the focusing assembly 14 within the enclosed space formed by the connection of the sealing cover and the fixing sleeve 11, and by sealing the proximal fixed lens assembly 15 through the CMOS mount, can prevent moisture from entering and affecting the imaging effect of the zoom lens 1; the sealing mechanism 3 is sealed between the zoom lens 1 and the power mechanism 2, forming a sealed path between them; the sealing sleeve assembly 31 connects the traction wire assembly 21 to the zoom lens 1, and the zoom lens 1 is connected to the traction wire assembly 21 through the sealing sleeve assembly 31. One end of the connection is sealed to prevent external moisture from entering through the connection between the zoom lens 1 and the traction wire assembly 21; the near-end sealing assembly 32 can also be used to seal the connection between the operating assembly 22 and the traction wire assembly 21, preventing external moisture from entering through the connection between the operating assembly 22 and the traction wire assembly 21; thus, a sealed design is achieved along the entire path from the zoom lens 1 to the power mechanism 2, ensuring the focusing function while also providing good sealing performance, and also isolating and blocking tiny particles of molybdenum disulfide or other lubricants that lubricate the inside of the endoscope.

[0069] 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. An endoscope with a zoom camera module, characterized in that, include: The zoom lens (1) includes a lens barrel, a remote fixed lens assembly (13) and a near fixed lens assembly (15) respectively connected to the two ends of the lens barrel along the axial direction, and a focusing assembly (14) located inside the lens barrel. The power mechanism (2) includes a traction wire assembly (21) and an operating assembly (22). The traction wire assembly (21) includes a traction wire (211). One end of the traction wire (211) passes through the lens barrel and is connected to the focusing assembly (14). The other end of the traction wire (211) is fixedly connected to the operating assembly (22). The operating assembly (22) is adapted to drive the focusing assembly (14) to reciprocate along the optical axis of the zoom lens (1) via the traction wire (211) to adjust the focal length of the zoom lens (1). The sealing mechanism (3) includes a sealing sleeve assembly (31) sleeved on the outer periphery of the traction wire (211), the sealing sleeve assembly (31) being sealed at the connection position between the traction wire (211) and the zoom lens (1).

2. The endoscope with a zoom camera module according to claim 1, characterized in that, The lens barrel includes a guide block (19), and the guide block (19) has a guide hole (192) inside. One end of the traction wire (211) passes through the guide hole (192) and is connected to the focusing assembly (14). The sealing sleeve assembly (31) includes a transition steel pipe (311), a hose (312), and a protective steel pipe (313). The transition steel pipe (311) is sealed and connected to the outer periphery of one end of the guide block (19). The protective steel pipe (313) is sleeved on the outer periphery of the traction wire (211) and spaced apart from the transition steel pipe (311). The hose (312) is sealed and connected between the transition steel pipe (311) and the protective steel pipe (313).

3. The endoscope with a zoom camera module according to claim 2, characterized in that, The lens barrel includes a fixed sleeve (11) and a sealing cover (12). The fixed sleeve (11) is a cylindrical structure with an opening groove (111) on one side of the circumference. The sealing cover (12) is sealed and connected to the opening groove (111) on the outer circumference of the fixed sleeve (11). The focusing assembly (14) is slidably installed in the fixed sleeve (11) along the optical axis.

4. The endoscope with a zoom camera module according to claim 3, characterized in that, The guiding direction of the opening groove (111) is the same as the axial direction of the guide block (19); the traction wire assembly (21) also includes a guide shaft (212) fixedly connected to the distal end of the traction wire (211), the guide shaft (212) is slidably connected to the guide hole (192) of the guide block (19), and the focusing assembly (14) is fixedly connected to the guide shaft (212).

5. The endoscope with a zoom camera module according to claim 4, characterized in that, A positioning block (17) is fixedly provided on the remote fixed lens assembly (13). A through hole (171) coaxially provided with the guide shaft (212) is provided in the positioning block (17). A focusing screw (172) is threadedly connected in the through hole (171). One end of the focusing screw (172) extends into the lens barrel. The remote end of the guide shaft (212) reciprocates in the area between the focusing screw (172) and the guide block (19). The proximal end of the sealing cover (12) is sealed to the guide block (19), and the remote end is sealed to the positioning block (17).

6. The endoscope with a zoom camera module according to claim 2, characterized in that, The guide block (19) has a guide sleeve (191) with a reduced outer diameter at its near end, and the adapter steel pipe (311) is sealed around the outer periphery of the guide sleeve (191).

7. The endoscope with a zoom camera module according to claim 2, characterized in that, The operating component (22) is mounted on a housing (0), and the proximal end of the protective steel tube (313) extends into the housing (0). The sealing mechanism (3) further includes a proximal sealing component (32) that is sealed between the protective steel tube (313) and the housing (0). The proximal sealing component (32) includes a sealing shaft (321) and a sealing sleeve (322). The sealing shaft (321) is sleeved on the outer periphery of the protective steel tube (313). One end of the sealing sleeve (322) is sealed on the sealing shaft (321), and the other end is sealed on the outer periphery of the output end of the operating component (22). The traction wire (211) passes through the protective steel tube (313) and is fixedly connected to the output end of the operating component (22).

8. The endoscope with a zoom camera module according to claim 7, characterized in that, The operating component (22) is connected to the sealing sleeve (322) via a sealing slider (323). A connecting hole (324) is provided in the end of the sealing slider (323) away from the operating component (22). The end of the traction wire (211) away from the focusing component is fixedly connected to the connecting hole (324). The sealing sleeve (322) is sealed on the outer end of the sealing slider (323).

9. The endoscope with a zoom camera module according to claim 8, characterized in that, The sealing sleeve (322) has a first sealing groove (325) on its inner peripheral wall near the sealing slider (323), and the sealing shaft (321) has a second sealing groove (326) on its outer peripheral wall near the sealing slider (323). A first sealing ring (327) is provided in the first sealing groove (325) between the sealing sleeve (322) and the sealing slider (323), and a second sealing ring (328) is provided in the second sealing groove (326) between the sealing sleeve (322) and the sealing shaft (321).

10. The endoscope according to claim 9, characterized in that, The operating component (22) includes a lever (221), a crank (222), a connecting rod (223), a drive slider (224), and a rotating shaft (225). The lever (221) is connected to the rotor of the rotating shaft (225). The crank (222) is fixedly connected to the outer periphery of the turntable of the rotating shaft (225). The connecting rod (223) is rotatably connected between the crank (222) and the drive slider (224). The end of the drive slider (224) away from the connecting rod (223) is fixedly connected to the sealing slider (323).

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