Traction pulley locking structure and endoscope

Abstract

A traction pulley locking structure and an endoscope (300), the endoscope (300) comprising a housing (310), the traction pulley locking structure being provided within the housing (310), and the traction pulley locking structure comprising: a traction assembly (100), the traction assembly (100) being rotatably provided on the housing (310), and the traction assembly (100) comprising a locking portion (110) and a limiting portion (120); a locking assembly (200), the locking assembly (200) being movable relative to the locking portion (110) so as to lock or release the locking portion (110), thereby locking or unlocking the traction assembly (100), and the locking assembly (200) being in rotational limiting fit with the limiting portion (120) at any position. Providing a locking assembly (200) simultaneously enables both angular travel limiting and locking / unlocking for a traction assembly (100), thereby simplifying components, lowering costs, and facilitating operation.

Description

A traction wheel locking structure and an endoscope Technical Field

[0001] This application relates to the field of endoscope technology, and in particular to a traction wheel locking structure and an endoscope. Background Technology

[0002] Endoscopes are commonly used medical devices. Their insertion section has a distal active bending segment, to which a traction rope is connected to control its bending. The traction rope is wound around a traction wheel, which is connected to a lever. Moving the lever rotates the traction wheel, thus applying force to the traction rope and causing the active bending segment to bend.

[0003] In practical use, the bending angle of the active bending section is limited, and the operator often needs to control the active bending end at a specific angle. Existing technologies involve numerous components that limit the rotation angle of the traction wheel and for locking or unlocking, resulting in complex assembly. Utility Model Content

[0004] This application provides a traction wheel locking structure and an endoscope, which is used to achieve the coordinated locking and unlocking of the traction component and the angle limiting function in the endoscope.

[0005] In a first aspect, embodiments of this application provide a traction wheel locking structure for use in an endoscope. The endoscope includes a housing, and the traction wheel locking structure is disposed within the housing. The traction wheel locking structure includes: a traction assembly rotatably disposed on the housing, the traction assembly including a locking part and a limiting part; and a locking component movable relative to the locking part to lock or release the locking part, used to lock or unlock the traction assembly, and the locking component is rotatably limited in any position by the limiting part.

[0006] In some embodiments of this application, the locking component moves radially along the traction component between a first position and a second position.

[0007] In some embodiments of this application, the locking assembly includes a rotating member and a pressing member. The pressing member is slidably connected to the housing, and the rotating member is rotatably connected to the pressing member. Rotating the rotating member pushes the pressing member, thereby moving the pressing member.

[0008] In some embodiments of this application, the pressing member includes a first pressing part and a second pressing part, and the rotating member is connected between the first pressing part and the second pressing part. Rotating the rotating member pushes the first pressing part to move the pressing member to the first position, or pushes the second pressing part to move the pressing member to the second position.

[0009] In some embodiments of this application, the first pressing part has a groove, the pressing member moves to the first position, the rotating member rotates in a first direction, and the rotating member abuts against one end of the groove to slide into the groove.

[0010] In some embodiments of this application, a buffer portion is provided on the first pressing portion, the buffer portion being located on the sliding side of the groove, and the buffer portion being used to limit the rotation amplitude of the rotating member.

[0011] In some embodiments of this application, the buffer portion includes a buffer slope and a blocking surface, the rotating member rotates along the first direction, the rotating member rotates out of the groove and abuts against the blocking surface; and / or, the rotating member rotates along the circumferential second direction, the rotating member abuts and locks against the blocking surface.

[0012] In some embodiments of this application, the second pressing part has an inner arc surface, the pressing member moves to the second position, the rotating member abuts against the inner arc surface, and the pressing member is fixed in the second position; and / or, the pressing member further includes a damping member, the damping member is fixed to the bottom end of the pressing member, the pressing member moves to the first position, and the damping member abuts against the locking part.

[0013] In some embodiments of this application, the limiting portion includes a plurality of limiting sub-parts, which are spaced apart in the circumferential direction; and / or, along the moving direction of the locking component, limiting members are provided on both sides of the locking component, and the limiting members are slidably connected to the locking component; and / or, the locking portion has protrusions, which are spaced apart on the outer peripheral surface of the locking portion, and the protrusions can contact the locking component.

[0014] Secondly, embodiments of this application provide an endoscope including the aforementioned traction wheel locking structure.

[0015] The beneficial effects of this application are:

[0016] The traction wheel locking structure includes a locking component movably connected to the housing. Moving the locking component locks it to the locking part in the traction component. At this point, the locking part is restricted by the locking component and cannot continue to rotate, thus locking the traction component. Moving the locking component separates it from the locking part, unlocking the traction component and allowing it to continue rotating. Furthermore, during the movement of the traction component, the limiting part in the traction component always engages with the rotation limiting part of the locking component, limiting the rotation angle of the traction component. Thus, through the cooperation between the locking component and the traction component, both the rotation angle of the traction component and the locking and unlocking functions at various angles are limited. This significantly reduces the number of components required for the traction component to achieve angle limiting and locking / unlocking functions, thereby simplifying the assembly process of the housing, traction component, and locking component, reducing production costs and time wastage, and improving production assembly efficiency. Attached Figure Description

[0017] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0018] In the attached diagram:

[0019] Figure 1 is a schematic diagram of the structure of an endoscope disclosed in some embodiments of this application;

[0020] Figure 2 is a partial enlarged view of part A disclosed in some embodiments of this application;

[0021] Figure 3 is a schematic diagram of the unlocking structure of the locking component and the locking part disclosed in some embodiments of this application;

[0022] Figure 4 is a schematic diagram of the traction wheel locking structure disclosed in some embodiments of this application;

[0023] Figure 5 is a partial enlarged view of part B disclosed in some embodiments of this application;

[0024] Figure 6 is a schematic diagram of the locking structure of the locking component and the locking part disclosed in some embodiments of this application;

[0025] Figure 7 is a schematic diagram of the cooperation structure of the locking component and the traction component disclosed in some embodiments of this application;

[0026] Figure 8 is a schematic diagram of the structure of the locking component disclosed in some embodiments of this application.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100-Traction assembly, 200-Locking assembly, 300-Endoscope, 310-Housing housing

[0029] 110 - Locking part, 111 - Protrusion, 120 - Limiting part, 121 - Limiting sub-part

[0030] 210-Rotating component, 220-Pressing component, 230-Limiting component, 221-First pressing part, 222-Second pressing part, 223-Damping component, 2211-Groove, 2212-Buffer part, 2241-Buffer inclined surface, 2242-Blocking surface, 240-Abutting surface. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] To facilitate understanding of the embodiments provided in this application, the relevant technologies will first be introduced below in conjunction with application scenarios.

[0033] The active bending section of the endoscope 300 bends under the control of the traction wheel. During use, the rotation angle of the traction wheel (i.e., the bending angle of the active bending section) needs to be limited. Furthermore, to help the operator better operate the endoscope 300, a locking and unlocking mechanism is provided in the endoscope 300 to fix the bending angle of the active bending section at a specific angle for operation.

[0034] However, the existing limiting and locking components occupy a large amount of space in the endoscope 300 handle, and the number of components is large, making the operation process complicated. In view of this, this application proposes a traction wheel locking structure and an endoscope 300. The technical solution disclosed in the embodiment of this application will be described below with reference to Figures 1-8.

[0035] The traction wheel locking structure is used in the endoscope 300 and can be installed inside the housing 310 of the endoscope 300. During use, the operator can control the traction wheel through external operating levers or knobs.

[0036] In the embodiments of this application, as shown in Figures 2, 3, and 4, the traction wheel locking structure includes a traction component 100 and a locking component 200. The traction component 100 is rotatable relative to the housing 310, and also includes a locking part 110 and a limiting part 120.

[0037] The locking component 200 is movable relative to the locking part 110, and during its movement, the locking component 200 can lock or release the locking part 110 to control the locking and unlocking of the traction component 100. Furthermore, the locking component 200 is in rotational limiting engagement with the limiting part 120 at any position along its movement path.

[0038] In some embodiments, the locking part 110 and the limiting part 120 may be integral or separate. For example, as shown in FIG6, the locking part 110 and the limiting part 120 are disposed on different sides of the same cylinder. For example, the locking part 110 and the limiting part 120 may be two coaxial semicircles with different diameters, located on different sides of the circumference. The specific arrangement of the locking part 110 and the limiting part 120 is not limited here.

[0039] In some embodiments, the movement of the locking component 200 may include various methods. For example, the locking component 200 may move linearly relative to the locking portion 110 along the axial direction of the traction component 100, or move in a curved path along the circumferential direction of the traction component 100.

[0040] Specifically, when the locking component 200 is locked to the locking part 110, it can be locked in various ways, such as by the locking component 200 abutting against the locking part 110 or by the locking component 200 engaging with the locking part 110.

[0041] It should be noted that during its movement, the position of the locking component 200 does not change the rotation angle of the traction component 100 limited by the limiting part 120. That is, the maximum rotation angle of the traction component 100 is only related to the setting of the limiting part 120 and is not related to the movement of the locking component 200.

[0042] By incorporating a locking component 200 in the traction wheel locking structure, moving the locking component 200 locks the locking component 200 to the locking part 110 in the traction component 100. At this time, the locking part 110 is restricted by the locking component 200 and cannot continue to rotate, thus fixing the rotation angle of the traction component 100. When unlocking is required, simply moving the locking component 200 separates it from the locking part 110, and the traction component 100 is no longer restricted and can continue to rotate. Furthermore, during the movement of the traction component 100, the limiting part 120 in the traction component 100 always engages with the rotation limiting part of the locking component 200, thereby limiting the rotation angle of the traction component 100. At this time, through the cooperation between the locking component 200 and the traction component 100, the rotation angle of the traction component 100 can be limited, and the locking and unlocking functions at various angles can be realized. This greatly reduces the number of components required for the traction component 100 to realize the angle limiting and locking / unlocking functions, thereby simplifying the assembly process of the housing 310, the traction component 100, and the locking component 200, reducing production costs and wasting production time, and improving production assembly efficiency.

[0043] In some embodiments, the locking component 200 moves radially along the traction component 100 between a first position and a second position. When the locking component 200 moves to the first position, as shown in Figures 5 and 6, the locking component 200 abuts against the locking portion 110 in the traction component 100 to restrict the rotation of the traction component 100. When the locking component 200 moves to the second position, as shown in Figures 2 and 3, the locking component 200 separates from the locking portion 110, releasing the rotation lock of the traction component 100, allowing the traction component 100 to continue rotating.

[0044] By configuring the locking assembly 200 to move radially along the traction assembly 100, the operator can easily control the movement of the locking assembly 200 from outside the housing 310 using a lever or knob. Furthermore, setting the range of motion of the locking assembly 200 between the first and second positions reduces its displacement while still fulfilling its function. This facilitates operator control and reduces the space occupied by its movement within the housing 310, preventing any impact on other internal components during movement.

[0045] In some embodiments, as shown in Figures 3 and 6, the locking assembly 200 further includes a rotating member 210 and a pressing member 220. The rotating member 210 is rotatably connected to the pressing member 220, and the pressing member 220 is slidable relative to the housing 310. Rotating the rotating member 210 allows it to abut against the pressing member 220, and the movement of the rotating member 210 pushes the pressing member 220, thus moving the pressing member 220.

[0046] Specifically, the rotating member 210 can be a component of any shape. For example, the rotating member 210 can be a cam.

[0047] The movement of the pressing member 220 is controlled by rotating the rotating member 210. Compared with the movement control method, the rotating member 210 requires less space. Furthermore, the operator of the endoscope 300 can control the rotation of the rotating member 210 by rotation, which is simpler and faster than vertical movement, thus optimizing the operator's user experience.

[0048] In some embodiments, the pressing member 220 includes a first pressing portion 221 and a second pressing portion 222. A rotating member 210 is rotatably connected between the first pressing portion 221 and the second pressing portion 222. As shown in Figures 3 and 6, rotating the rotating member 210 causes it to abut against the first pressing portion 221 and the second pressing portion 222 respectively. When the rotating member 210 abuts against the first pressing portion 221, it pushes the first pressing portion 221 downwards, at which point the pressing member 220 moves downwards to a first position and abuts against the locking portion 110 to lock. When the rotating member 210 abuts against the second pressing portion 222, it pushes the second pressing portion 222 upwards, at which point the pressing member 220 moves upwards to a second position and abuts against the locking portion 110 to unlock.

[0049] In some embodiments, the first pressing part 221 and the second pressing part 222 may be disposed on the same side or opposite sides of the pressing member 220.

[0050] For example, as shown in FIG6, the first pressing part 221 is located on the lower side of the pressing member 220, and the second pressing part 222 is located on the upper side of the pressing member 220.

[0051] It should be noted that the directions up, down, left, and right referred to in this application can be referred to in the corresponding directions shown in Figure 6.

[0052] By setting the first pressing part 221 and the second pressing part 222, the rotating part 210 only needs to rotate between the first pressing part 221 and the second pressing part 222, instead of rotating 360 degrees, which greatly shortens the rotation distance of the rotating part 210, optimizes the user's operation process, and simplifies the rotation path of the rotating part 210.

[0053] In some embodiments, as shown in Figures 3 and 6, the first pressing part 221 has a groove 2211. When the rotating member 210 rotates in the first direction, causing the pressing member 220 to move downward to the first position, one end of the rotating member 210 abuts against one end of the groove 2211. Continuing to rotate the rotating member 210 in the first direction, the rotating member 210 slides into the groove 2211. Here, the first direction refers to a clockwise or counterclockwise direction. At this time, the rotating member 210 is located within the groove 2211, fixing the pressing member 220 at the first position, thus locking the traction assembly 100.

[0054] In some embodiments, the depth of the groove 2211 is related to the size of the rotating member 210. Specifically, the depth of the groove 2211 needs to satisfy the following condition: when the bottom of the groove 2211 abuts against the rotating member 210, the pressing member 220 also abuts against the locking part 110. Thus, when there is a gap between the rotating member 210 and the groove 2211, the offset of the pressing member 220 in its direction of movement will not affect the locking effect of the pressing member 220 on the locking part 110.

[0055] In some embodiments, the groove 2211 can be provided as needed, and the shape, size and other parameters of the groove 2211 are not limited here.

[0056] By providing a groove 2211 on the first pressing member 220, the rotation of the rotating member 210 can be restricted by the indentation created by the groove 2211. When the rotating member 210 slides into the groove 2211, the operator cancels the rotation control of the rotating member 210, and the groove 2211 still holds the rotating member 210 in that position, thereby ensuring that the pressing member 220 also remains in the first position, thus locking the traction assembly 100. Furthermore, the rotating member 210 first abuts against one end of the groove 2211 and then slides into the groove 2211. During this process, a significant change in force occurs, and the user can obtain a tactile cues through this change in force, indicating to the user that the traction assembly 100 has been locked at that position.

[0057] In some embodiments, a buffer portion 2212 is further provided on the first pressing portion 221, and the buffer portion 2212 is located on the sliding side of the groove 2211. As shown in FIG6, the buffer portion 2212 is used to limit the rotation amplitude of the rotating member 210 in the first direction.

[0058] Specifically, the buffer portion 2212 can be implemented in a variety of ways. For example, the buffer portion 2212 can be an arc surface extending outward from the side of the groove 2211.

[0059] By providing a buffer section 2212, the rotation amplitude of the rotating member 210 in the first direction can be limited, thereby preventing the rotation direction of the rotating member 210 from going out of control.

[0060] In some embodiments, the buffer portion 2212 includes a buffer ramp 2241 and a blocking surface 2242. The rotating member 210 rotates along a first direction, exiting the groove 2211 and abutting against the blocking surface 2242. Furthermore, when the rotating member 210 rotates along a second circumferential direction, it abuts against the blocking surface 2242 and pushes the pressing member 220 downwards to a first position. The traction assembly 100 can be locked; it is unlocked when the operator releases control of the rotating member 210. The second direction is the opposite of the first direction; that is, when the first direction is clockwise, the second direction is counterclockwise.

[0061] By setting the blocking surface 2242, the traction component 100 can be locked regardless of the direction in which the rotating component 210 rotates. Furthermore, the operator can determine whether to lock the traction component 100 permanently or temporarily according to the usage requirements. This optimizes the locking function of the locking component 200, improves the usage process, and enhances the operational efficiency of the component.

[0062] In some embodiments, as shown in FIG6, the second pressing part 222 is provided with an inner arc surface. When the pressing member 220 moves upward to the second position, the end point of the rotating member 210 abuts against the inner arc surface, fixing the pressing member 220 in the second position.

[0063] Specifically, the curvature of the inner arc surface can be the same or varied.

[0064] By setting an inner arc surface, the rotation arc of the rotating component 210 can be further matched, allowing the pressing component 220 to move evenly, gradually increasing resistance, and making it easier for the operator to operate.

[0065] Furthermore, a damping member 223 is also provided at the bottom end of the pressing member 220. When the pressing member 220 moves to the first position, the damping member 223 abuts against the locking part 110. For example, the damping member 223 can be made of a material with high inherent frictional resistance, such as rubber. For example, the damping member 223 can be provided with structures that increase frictional resistance, such as recesses or protrusions.

[0066] For example, the bottom surface of the damping member 223 can also be configured to fit the outer surface of the locking part 110 to increase the contact area between the two, thereby increasing the friction and achieving a more secure lock between them.

[0067] For example, the damping member 223 can be made of a flexible material. When the damping member 223 abuts against the locking part 110, the damping member 223 can undergo a certain elastic deformation to further lock the locking part 110.

[0068] In some embodiments, as shown in FIG5, the locking portion 110 is provided with a protrusion 111, which contacts the bottom surface of the pressing member 220 when the pressing member 220 is in the first position. The protrusion 111 is used to increase the frictional resistance between the locking portion 110 and the pressing member 220. The protrusion 111 can be provided at intervals around the locking portion 110.

[0069] Specifically, the protrusions 111 can be distributed on the outer peripheral surface of the locking portion 110 in various ways. For example, the protrusions 111 are distributed in a dotted pattern on the outer peripheral surface of the locking portion 110. For example, the protrusions 111 can be elongated strips, distributed in a gear-like interval in the circumferential direction on the outer peripheral surface of the locking portion 110. The arrangement of the protrusions 111 is not limited here.

[0070] By incorporating the damping element 223 and / or the protrusion 111, the frictional resistance between the locking element and the pressing element 220 can be further increased, thereby preventing the pressing element 220 from slipping or shifting position when locking with the locking part 110, thus reducing the locking stability between the pressing element 220 and the locking element. Furthermore, increasing the frictional resistance between the pressing element 220 and the locking part 110 can also reduce the force required by the operator during locking, making the locking operation simpler and easier, and optimizing the user experience.

[0071] In some embodiments, the limiting portion 120 can be configured in various ways. For example, as shown in FIG5, the limiting portion 120 may include a plurality of limiting sub-portions 121, which are distributed at intervals in the circumferential direction.

[0072] In this configuration, the two abutting surfaces 240 of the limiting portion 120 abut against the pressing member 220 to limit the rotation angle of the traction assembly 100. For example, as shown in FIG7, the radial distance of the limiting portion 120 is greater than the radial distance of the locking portion 110. In this case, at least a portion of the pressing member 220 is located between the limiting portion 120 and the locking portion 110 in the radial direction of the traction assembly 100.

[0073] For example, as shown in FIG6, the radial distance of the limiting part 120 is less than the radial distance of the locking part 110. In this case, the pressing member 220 extends towards the locking part 110 on both sides. In the radial direction of the traction assembly 100, at least a portion of the pressing member 220 is located between the limiting part 120 and the locking part 110.

[0074] In some embodiments, the limiting sub-part 121 may be configured as a toothed structure.

[0075] By setting limit sub-parts 121 at intervals in the circumferential direction, the rotation angle of the traction assembly 100 can be controlled by changing the number of limit sub-parts 121, making it easy to adjust the maximum angle limit of the traction assembly 100.

[0076] In some embodiments, as shown in Figures 6, 7, and 8, limiting members 230 are provided on both sides of the moving direction of the locking component 200, and the limiting members 230 are slidably connected to the locking component 200. The limiting members 230 are used to restrict the moving path of the locking component 200.

[0077] By setting the limiting member 230, the movement path of the locking component 200 can be limited, preventing the locking component 200 from deviating from its movement path, thus ensuring its normal use or affecting other components within the housing 310. On the other hand, the limiting member 230 can protect the movement path of the locking component 200, preventing other components from interfering with or obstructing that movement path.

[0078] Embodiments of this application also include an endoscope 300, which includes the aforementioned traction wheel locking structure.

[0079] Note that the endoscope 300 involved in the embodiments of this application may be a bronchoscope, pyeloscope, esophagoscopy, gastroscopy, colonoscope, otoscope, rhinoscope, oral endoscope, laryngoscope, colposcope, laparoscope, arthroscope, etc. The embodiments of this application do not specifically limit the type of endoscope 300.

[0080] The above embodiments of this application focus on describing the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be described in detail here.

[0081] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. A traction wheel locking structure, characterized in that, It can be used in an endoscope (300), the endoscope (300) including a housing (310), the traction wheel locking structure being disposed within the housing (310), the traction wheel locking structure including: A traction assembly (100) is rotatably disposed on the housing (310), and the traction assembly (100) includes a locking part (110) and a limiting part (120). A locking component (200) is movable relative to the locking part (110) to lock or release the locking part (110) for locking or unlocking the traction component (100), and the locking component (200) is rotationally limited to the limiting part (120) at any position.

2. The traction wheel locking structure according to claim 1, characterized in that, The locking assembly (200) moves radially along the traction assembly (100) between a first position and a second position.

3. The traction wheel locking structure according to claim 2, characterized in that, The locking assembly (200) includes a rotating member (210) and a pressing member (220). The pressing member (220) is slidably connected to the housing (310). The rotating member (210) is rotatably connected to the pressing member (220). When the rotating member (210) is rotated, the rotating member (210) pushes the pressing member (220) and drives the pressing member (220) to move.

4. The traction wheel locking structure according to claim 3, characterized in that, The pressing member (220) includes a first pressing part (221) and a second pressing part (222). The rotating member (210) is connected between the first pressing part (221) and the second pressing part (222). When the rotating member (210) is rotated, it pushes the first pressing part (221) to move the pressing member (220) to the first position, or pushes the second pressing part (222) to move the pressing member (220) to the second position.

5. The traction wheel locking structure according to claim 4, characterized in that, The first pressing part (221) has a groove (2211). The pressing member (220) moves to the first position, and the rotating member (210) rotates in the first direction. The rotating member (210) abuts against one end of the groove (2211) to slide into the groove (2211).

6. The traction wheel locking structure according to claim 5, characterized in that, The first pressing part (221) is provided with a buffer part (2212), which is located on the sliding side of the groove (2211) and is used to limit the rotation amplitude of the rotating part (210).

7. The traction wheel locking structure according to claim 6, characterized in that, The buffer section (2212) includes a buffer slope (2241) and a blocking surface (2242). The rotating member (210) rotates along the first direction. The rotating member (210) rotates out of the groove (2211) and abuts against the blocking surface (2242). And / or, the rotating member (210) rotates in a second circumferential direction, and the rotating member (210) abuts and locks against the blocking surface (2242).

8. The traction wheel locking structure according to claim 4, characterized in that, The second pressing part (222) has an inner arc surface. When the pressing member (220) moves to the second position, the rotating member (210) abuts against the inner arc surface to fix the pressing member (220) in the second position. And / or, the pressing member (220) further includes a damping member (223), the damping member (223) being fixed to the bottom end of the pressing member (220), the pressing member (220) being moved to the first position, and the damping member (223) abutting against the locking part (110).

9. The traction wheel locking structure according to claim 1, characterized in that, The limiting part (120) includes a plurality of limiting sub-parts (121), which are spaced apart in the circumferential direction; And / or, along the moving direction of the locking assembly (200), limit members (230) are provided on both sides of the locking assembly (200), and the limit members (230) are slidably connected to the locking assembly (200); And / or, the locking part (110) has protrusions (111) that are spaced apart on the outer peripheral surface of the locking part (110) and that can contact the locking assembly (200).

10. An endoscope (300), characterized in that, Includes the traction wheel locking structure as described in any one of claims 1-9.

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