Operating unit rotary mechanism, assembly method of operating unit rotary mechanism and endoscope

Abstract

An operating wheel mechanism, an assembly method for the operating wheel mechanism, and an endoscope are disclosed, relating to the field of medical devices. The mechanism is used in conjunction with a limiting component during assembly. The mechanism includes a housing and a wheel body, the wheel body being rotatably mounted on the housing around a preset axis. A first limiting component is provided on one of the housing and the wheel body, and a second limiting component is provided on the other. Both the first and second limiting components are used to detachably engage with the limiting component during the assembly of the housing and the wheel body. When the limiting component is simultaneously connected to both the first and second limiting components, the first and second limiting components are relatively fixed circumferentially along the preset axis. This reduces the probability of the wheel body rotating when the traction rope is locked, thereby ensuring that the wheel body remains in the preset position and improving assembly quality.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more specifically, to an operating part rotary mechanism, an assembly method for the operating part rotary mechanism, and an endoscope. Background Technology

[0002] To adjust the angle of the curved section of the endoscope, the traction rope connected to the snake-bone assembly needs to be guided to the operating unit, and the end of the traction rope needs to be locked onto the angle adjustment wheel of the endoscope operating unit. For endoscopes that need to bend in two directions, two traction ropes are generally provided. The ends of both traction ropes need to be locked onto the angle adjustment wheel. After locking, the angle adjustment wheel should be in the set position to ensure that when force is applied to the lever connected to the angle adjustment wheel, the lever's swing stroke meets the set requirements, avoiding interference with the housing or buttons.

[0003] The inventors discovered during their research that the existing operating mechanism has at least the following drawbacks:

[0004] During actual assembly, the traction rope is tightened by screws connected to the angle-adjusting wheel. Because the angle-adjusting wheel inevitably rotates when the screws are turned to tighten the traction rope, it cannot be guaranteed that the assembled angle-adjusting wheel will be in the preset position. This can easily cause interference between the lever and the housing when the lever rotates; furthermore, it can cause the maximum angle to be insufficient when the lever rotates to one side, while exceeding the maximum angle when rotating to the other side, thus increasing the risk of damage to the snake-bone assembly. Summary of the Invention

[0005] The present invention aims to provide, for example, an operating part rotating wheel mechanism, an assembly method for the operating part rotating wheel mechanism, and an endoscope, which can reduce the probability of the dial wheel body rotating when the traction rope is locked, thereby ensuring that the dial wheel body is always in a preset position and improving the assembly quality.

[0006] The embodiments of the present invention can be implemented as follows:

[0007] In a first aspect, the present invention provides an operating part rotary wheel mechanism for use in conjunction with a limiting member during assembly, comprising a housing and a rotary wheel body, wherein:

[0008] The rotating wheel body is rotatably mounted on the housing around a preset axis;

[0009] A first limiting part is provided on one of the housing and the rotating wheel body, and a second limiting part is provided on the other of the housing and the rotating wheel body;

[0010] Both the first limiting part and the second limiting part are used to detachably engage with the limiting member during the assembly of the housing and the wheel body; when the limiting member is simultaneously connected to the first limiting part and the second limiting part, the first limiting part and the second limiting part are relatively fixed in the circumferential direction of the preset axis.

[0011] In an optional embodiment, the first limiting portion and / or the second limiting portion are configured as convex or concave portions.

[0012] In an optional embodiment, the first limiting part is provided with a limiting protrusion, the first end of the limiting protrusion is fixedly connected to the housing, and the second end of the limiting protrusion is suspended.

[0013] The wheel body has a first surface and a second surface that are opposite each other in the extension direction of the preset axis. The first surface is located on the side of the second surface near the first end. The second limiting part is configured as a limiting groove located on the second surface. The limiting member is used to simultaneously engage with the limiting protrusion and the limiting groove. The limiting member, the limiting protrusion, and the limiting groove are fixed relative to each other in the circumferential direction of the preset axis.

[0014] In an optional embodiment, the wheel body is provided with a guide groove that penetrates the first surface and the second surface, and the first limiting part passes through the guide groove and is slidably engaged with the guide groove in the circumferential direction of the preset axis.

[0015] In an optional embodiment, the guide groove has a first groove wall and a second groove wall arranged circumferentially on the preset axis; when the wheel body rotates relative to the housing, the first limiting portion can contact one of the first groove wall and the second groove wall to limit the rotation angle of the wheel body relative to the housing.

[0016] In an optional embodiment, one side of the limiting groove is connected to the guide groove.

[0017] In an optional embodiment, the guide groove has an inner groove wall and an outer groove wall arranged radially at intervals on the wheel body, the inner groove wall being located on the side of the outer groove wall closer to the center of the wheel body, and the limiting protrusion being clearance-fitted with both the inner groove wall and the outer groove wall; the limiting groove and the first surface are spaced apart in the extension direction of the preset axis.

[0018] In an optional embodiment, there are multiple first limiting portions or multiple second limiting portions, and the multiple first limiting portions or multiple second limiting portions are arranged at intervals in the circumferential direction of the preset axis.

[0019] In an optional embodiment, a damping structure is provided between the housing and the wheel body, the damping structure being used to provide damping when the wheel body rotates relative to the housing.

[0020] Secondly, the present invention provides an assembly method for an operating part rotating mechanism, applied to the operating part rotating mechanism described in any of the foregoing embodiments, the assembly method comprising the following steps:

[0021] The rotating wheel body is mounted on the housing and the two are rotatably coupled together;

[0022] The limiting member is simultaneously connected to the first limiting part and the second limiting part, so that the limiting member is simultaneously fixed relative to the first limiting part and the second limiting part in the circumferential direction of the preset axis.

[0023] At least one end of a traction wire is fixed to the wheel body;

[0024] Remove the limiting member from the first limiting part and the second limiting part.

[0025] Thirdly, the present invention provides an endoscope including the operating section rotary mechanism described in any of the foregoing embodiments.

[0026] The beneficial effects of the embodiments of the present invention include, for example:

[0027] In summary, the operating wheel mechanism provided in this embodiment, by providing a first limiting part on one of the housing and the wheel body, and a second limiting part on the other, ensures that the wheel body is in a preset position during assembly of the housing and the wheel body. Furthermore, by connecting a limiting member to both the first and second limiting parts simultaneously, the first and second limiting parts are relatively fixed circumferentially along a preset axis, thus restricting the rotation of the wheel body relative to the housing. Under these conditions, when the end of at least one traction rope is fixed to the wheel body using screws or other structural components, the wheel body is less likely to rotate relative to the housing, ensuring it remains in the preset position and improving assembly quality. After assembly, when a lever applied to the wheel body rotates it, the angle of the snake-bone assembly can be adjusted via the corresponding traction rope. The adjustment angle range meets the design value, minimizing the possibility of insufficient or excessive maximum angle, ensuring safe and reliable operation. Because the lever's rotation angle is moderate, interference between the lever and the housing or the buttons on the housing is unlikely. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the rotating mechanism of the operating section in this embodiment;

[0030] Figure 2 This is an exploded view of the operating unit's rotary mechanism in this embodiment;

[0031] Figure 3 This is a schematic diagram of the lower half of the shell in this embodiment;

[0032] Figure 4 This is a schematic diagram of the rotating wheel body in this embodiment;

[0033] Figure 5 This is a schematic diagram of the hidden upper shell of the operating part rotating mechanism in this embodiment;

[0034] Figure 6 This is a schematic diagram of the operation unit's rotating wheel mechanism and the limiting member cooperating in this embodiment.

[0035] icon:

[0036] 001-Limiting component; 100-Housing shell; 110-First half-shell; 111-Assembly hole; 112-First limiting part; 113-Damping groove; 120-Second half-shell; 200-Rotating wheel body; 210-First surface; 220-Second surface; 221-Second limiting part; 2211-Limiting groove; 222-Arc-shaped groove; 223-First fixing hole; 224-First storage groove; 225-Second fixing hole; 226-Second storage groove; 230-Outer peripheral surface; 240-Central through hole; 250-Guide groove; 251-First groove wall; 252-Second groove wall; 253-Inner groove wall; 254-Outer groove wall; 300-Rotating shaft; 400-Toggle lever; 500-Damping structure; 600-Locking screw. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0039] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0040] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention 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 invention.

[0041] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0042] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0043] In the prior art, when the traction rope is fixed to the angle-adjusting wheel by screws or other structural components, although the relative position between the angle-adjusting wheel and the housing 100 is initially at a preset position, as external force is transmitted to the angle-adjusting wheel, the angle-adjusting wheel may rotate relative to the housing 100. This causes the stroke of the traction rope to be inconsistent with the preset value, resulting in situations where the maximum angle does not meet the set value or the maximum angle is too large, making it inconvenient to use and posing a high risk of damage. In addition, there is also the possibility that the lever 400 connected to the angle-adjusting wheel may interfere with the housing 100 when it rotates.

[0044] In view of this, the designer provides an operating part rotating wheel mechanism, which can reduce the probability of the rotating wheel body 200 rotating when installing the traction rope, improve the assembly quality, ensure that the stroke of the traction rope meets the set requirements, and ensure that the maximum bending angle of the snake bone assembly meets the design value. It is convenient to use and safe and reliable to use.

[0045] Please refer to Figures 1-6 This embodiment provides an operating part rotary wheel mechanism for use in conjunction with the limiting member 001 during assembly, including a housing 100 and a rotary wheel body 200, wherein:

[0046] The rotating wheel body 200 is rotatably mounted on the housing 100 around a preset axis;

[0047] A first limiting part 112 is provided on one of the housing 100 and the rotating wheel body 200, and a second limiting part 221 is provided on the other of the housing 100 and the rotating wheel body 200;

[0048] Both the first limiting part 112 and the second limiting part 221 are used to detachably engage with the limiting member 001 during the assembly of the housing 100 and the wheel body 200. When the limiting member 001 is simultaneously connected to the first limiting part 112 and the second limiting part 221, the first limiting part 112 and the second limiting part 221 are relatively fixed relative to each other in the circumferential direction along a preset axis.

[0049] As described above, the assembly process of the operating unit rotary mechanism provided in this embodiment is as follows:

[0050] When assembling the housing 100 and the wheel body 200, the limiting member 001 is simultaneously connected to the first limiting part 112 and the second limiting part 221, so that the first limiting part 112 and the second limiting part 221 are relatively fixed in the circumferential direction of the preset axis, that is, the rotation of the wheel body 200 relative to the housing 100 is restricted. Under this condition, it can be ensured that the wheel body 200 is always in the preset position. Then, when the end of at least one traction rope is fixed to the wheel body 200 with screws or other structural components, the wheel body 200 is not easy to rotate relative to the housing 100, and the wheel body 200 can always be in the preset position, improving the assembly quality. After assembly, when the lever 400 applied to the wheel body 200 drives the wheel body 200 to rotate, the angle of the snake bone assembly can be adjusted by the corresponding traction rope, and the adjustment angle range meets the design value, and it is not easy for the maximum angle to be insufficient or exceed the design value, making it safe and reliable to use. Because the rotation angle of the lever 400 is moderate, interference between the lever 400 and the housing 100 and the buttons on the housing 100 is unlikely.

[0051] The following embodiments illustrate the details of the operating part rotary mechanism of this application by way of example.

[0052] Please refer to Figures 1-5In this embodiment, optionally, the operating unit's rotating wheel mechanism includes a housing 100, a rotating wheel body 200, a rotating shaft 300, a lever 400, and a damping structure 500. The rotating wheel body 200 is rotatably connected to the housing 100 about a preset axis via the rotating shaft 300. The lever 400 is fixed to the rotating shaft 300 and can drive the rotating wheel body 200 to rotate relative to the housing 100 via the rotating shaft 300. The preset axis coincides with the axis of the rotating shaft 300. The damping structure 500 is installed on the housing 100 and can contact the rotating wheel body 200, thereby providing damping when the rotating wheel body 200 rotates relative to the housing 100, ensuring that the rotating wheel body 200 can stay at a set position after rotating relative to the housing 100, thus keeping the front end of the snake-bone assembly at a set angle, making it convenient and reliable to use.

[0053] Please refer to Figures 1-2 In this embodiment, optionally, the housing 100 can be configured as a split structure. For example, the housing 100 includes a first half-shell 110 and a second half-shell 120, which are mated together and fixedly connected by snaps or screws. After the first half-shell 110 and the second half-shell 120 are mated together, they define a space for housing the rotating wheel body 200. The rotating wheel body 200 is located within this space, making it less susceptible to contamination and damage, and extending its service life. Meanwhile, the first half-shell 110 is provided with a mounting hole 111, through which the rotating shaft 300 can be rotatably connected to the mounting hole 111 via a bearing. One end of the rotating shaft 300 extends out of the mounting hole 111 for easy connection with the lever 400.

[0054] Please refer to Figures 1-3 Optionally, a first limiting part 112 is provided on the inner wall surface of the first half-shell 110. The first limiting part 112 is configured as a limiting protrusion with a circular cross-sectional profile and a plane perpendicular to the axis of the limiting protrusion. The limiting protrusion is eccentrically positioned with respect to the mounting hole 111, that is, there is a gap between the axis of the limiting protrusion and the axis of the mounting hole 111. The shell 100 is configured with a front end near the patient and a rear end near the surgeon. The limiting protrusion is located on the side of the mounting hole 111 near the front end, which reduces the length and volume of the shell 100, making it easier to hold.

[0055] Please refer to Figure 3 Optionally, a damping groove 113 is provided on the inner wall surface of the first half-shell 110. The damping groove 113 is located on the side of the first limiting protrusion away from the assembly hole 111. The damping structure 500 can be set as a damping block, such as a rubber block, and is snapped and fixed in the damping groove 113. The damping structure 500 is fixed relative to the first half-shell 110.

[0056] It should be understood that the limiting protrusion and the first half-shell 110 can be configured as an integral structure. For example, they can be integrally molded by injection molding, resulting in high structural strength, long service life, suitability for mass production, improved processing efficiency, and reduced manufacturing costs. After the limiting protrusion is connected to the first half-shell 110, the end of the limiting protrusion connected to the first half-shell 110 is the first end, and the other end of the limiting protrusion is the second end. The second end is suspended, that is, when the first half-shell 110 and the second half-shell 120 are not assembled together, the second end of the limiting protrusion is not blocked.

[0057] Please refer to Figure 4 In this embodiment, optionally, the wheel body 200 is generally a disc structure. The wheel body 200 has a first surface 210 and a second surface 220 along its axial direction, and the wheel body 200 also has an outer circumferential surface connecting the first surface 210 and the second surface 220. The wheel body 200 is provided with a central through hole 240, a guide groove 250, a second limiting part 221, an arc-shaped groove 222, a first fixing hole 223, a first receiving groove 224, a second fixing hole 225, and a second receiving groove 226.

[0058] The central through hole 240, guide groove 250, first fixing hole 223, and second fixing hole 225 all penetrate the first surface 210 and second surface 220 of the wheel body 200 along the axis of the wheel body 200. The central through hole 240 is a circular hole, and the rotating shaft 300 can pass through the central through hole 240, and the two are coaxially arranged. The guide groove 250 is a strip-shaped hole that extends circumferentially along a preset axis. The guide groove 250 has a first groove wall 251 and a second groove wall 252 arranged at intervals in its extending direction. The guide groove 250 also has an inner groove wall 253 and an outer groove wall 254 arranged at intervals in its radial direction. The second limiting part 221 includes two limiting grooves 2211, both of which are disposed on the second surface 220. Both limiting grooves 2211 can be arc-shaped grooves 222. The openings of the two limiting grooves 2211 are opposite each other and both communicate with the guide groove 250. The peripheral walls of the two limiting grooves 2211 are located on the same cylindrical surface, and the axis of this cylinder is parallel to a preset axis. Each limiting groove 2211 has a distance from the first surface 210 in the extension direction of the preset axis; that is, the limiting groove 2211 does not penetrate the wheel body 200. The two paired limiting grooves 2211 can simultaneously allow the limiting member 001 to insert and engage. Meanwhile, the arc-shaped groove 222 is disposed on the outer peripheral surface 230 of the wheel body 200, and the arc-shaped groove 222 can form a ring structure around the axis of the wheel body 200. The first storage slot 224 and the second storage slot 226 are both located on the second surface 220. The first storage slot 224 and the second storage slot 226 are arranged opposite to each other and are connected to the arc-shaped groove 222. The first fixing hole 223 is located on the bottom wall of the first storage slot 224, and the second fixing hole 225 is located on the bottom wall of the second storage slot 226.

[0059] In some embodiments, optionally, there can be multiple second limiting portions 221. These multiple second limiting portions 221 can be spaced apart along the extension direction of the guide groove 250. By selecting a corresponding second limiting portion 221 to cooperate with the first limiting portion 112, a preset position of the rotating wheel body 200 can be adjusted, thereby adjusting the maximum angle at which the snake bone bends in two directions. For example, one of the second limiting portions 221 can be located at the middle position along the length direction of the guide groove 250. In this position, the maximum angle at which the rotating wheel body 200 rotates in two opposite directions under the action of the lever 400 is equal, ensuring that the maximum angle at which the two traction ropes pull the snake bone to bend in two opposite directions is equal.

[0060] It should be noted that the limiting component 001 is set as a limiting sleeve, the cross-sectional profile of which is approximately circular. The limiting sleeve can be sleeved on the limiting protrusion and inserted into the two matching limiting grooves 2211.

[0061] The assembly steps of the operating unit rotary mechanism provided in this embodiment include, for example:

[0062] Please refer to Figures 5-6 The following explanation will be based on the example where the maximum angle of rotation of the wheel body 200 in both directions is equal. The wheel body 200 is mounted on the first half-shell 110 using the rotating shaft 300. The position of the wheel body 200 relative to the first half-shell 110 is adjusted so that it is in a preset position, that is, the second limiting part 221 located at the middle position of the guide groove 250 on the wheel body 200 engages with the first limiting part 112. At this time, the limiting protrusion is inserted into the guide groove 250, and the two matching limiting grooves 2211 are located on both sides of the limiting protrusion. When the wheel body 200 rotates in the first direction, the first limiting part 112 can contact the first groove wall 251, limiting the extreme position of the wheel body 200 in the first direction. Similarly, when the wheel body 200 rotates in the second direction opposite to the first direction, the first limiting part 112 can contact the second groove wall 252, limiting the extreme position of the wheel body 200 in the second direction. Through the cooperation of the guide groove 250 and the limiting protrusion, the rotation range of the wheel body 200 is limited.

[0063] After the rotating wheel body 200 is adjusted to the preset position, the limiting member 001 is sleeved on the outside of the limiting protrusion from the second end of the limiting protrusion and inserted into the two matching limiting grooves 2211. At this time, since the limiting member 001 and the rotating wheel body 200 will not rotate relative to each other, and the limiting member 001 and the limiting protrusion will not rotate relative to each other, it is ensured that the rotating wheel body 200 will not rotate relative to the first half shell 110.

[0064] Next, the ends of both traction ropes are passed through the arc-shaped grooves 222 and inserted into the first storage groove 224 and the second storage groove 226, respectively. Two locking screws 600 are screwed into the first fixing hole 223 and the second fixing hole 225, respectively. The locking screws 600 and the rotating wheel body 200 are used to clamp the traction ropes, completing the assembly of the traction ropes. During the assembly process, the rotating wheel body 200 will not rotate relative to the housing 100; the rotating wheel body 200 remains in the preset position, resulting in high assembly quality. After assembly, it ensures that the maximum angle when the two traction ropes pull the snake-like structure to bend meets the set value requirements, minimizing the possibility of over-bending or under-bending.

[0065] After the traction rope is installed, pull out the limiting piece 001, and then connect the second half shell 120 to the first half shell 110.

[0066] The cooperation between the guide groove 250 and the limiting protrusion limits the rotation angle range of the wheel body 200, reducing the likelihood of interference between the lever 400 and the housing 100 or other buttons, thus facilitating operation. It also reduces the likelihood of the maximum angle exceeding the set value, minimizing damage to the rotor. The limiting protrusion, inserted into the guide groove 250, engages with the inner groove wall 253 and the outer groove wall 254 with clearance. It not only positions the relative position of the wheel body 200 and the housing 100 via the rotating shaft 300 but also guides the wheel body 200 through the cooperation of the limiting protrusion and guide groove 250, preventing wheel body 200 from shifting and extending its service life. Furthermore, since the limiting groove 2211 does not penetrate the guide groove 250, when the wheel body 200 rotates relative to the housing 100, even if the limiting protrusion passes the location of the limiting groove 2211, it can still contact part of the inner groove wall 253 and the outer groove wall 254, resulting in good guiding performance.

[0067] It should be noted that after the rotating mechanism of the operating unit is installed, the limit piece 001 is removed, and the rotating body 200 can rotate under the drive of the lever 400, thereby pulling the snake bone to rotate through the traction rope, realizing the steering of the snake bone's front end. Furthermore, the outer circumferential surface 230 of the rotating body 200 contacts the damping block, using friction to restrict the free rotation of the rotating body 200, ensuring that the rotating body 200 can stop at the set position after rotation, thus maintaining the snake bone's angle and making it convenient to use.

[0068] It should be noted that in other embodiments, the first limiting part 112 may be provided on the wheel body 200, and the corresponding second limiting part 221 may be provided on the housing 100; or, the first limiting part 112 may be a concave part, and the second limiting part 221 may be a convex part; or, both the first limiting part 112 and the second limiting part 221 may be concave parts; or, both the first limiting part 112 and the second limiting part 221 may be convex parts, etc. The first limiting part 112 and the second limiting part 221 may cooperate with the limiting member 001, and the rotation of the wheel body 200 relative to the housing 100 may be restricted by the limiting member 001.

[0069] The operating unit rotary wheel mechanism provided in this embodiment, after the rotary wheel body 200 is adjusted to a preset position, locks the rotary wheel body 200 relative to the housing 100 using the limiting member 001. This ensures that the rotary wheel body 200 will not rotate when the traction rope is fixed to it. After the traction rope is installed, the maximum angle of rotation of the rotary wheel body 200 in both opposite directions meets the set value, making it safe and reliable to use. Furthermore, the rotation range of the rotary wheel body 200 is limited by the limiting protrusion and the guide groove 250, making it less likely for the lever 400 to interfere with the housing 100 when rotating, thus allowing for flexible operation.

[0070] This embodiment also provides a method for assembling an operating part rotating wheel mechanism, applied to the above-described operating part rotating wheel mechanism, the assembly method including the following steps:

[0071] The rotating wheel body 200 is mounted on the housing 100 and the two are rotatably coupled together;

[0072] The limiting member 001 is simultaneously connected to the first limiting part 112 and the second limiting part 221, so that the limiting member 001 is simultaneously fixed relative to the first limiting part 112 and the second limiting part 221 in the circumferential direction of the preset axis.

[0073] At least one end of a traction wire is fixed to the wheel body 200;

[0074] Remove the limiting member 001 from the first limiting part 112 and the second limiting part 221.

[0075] When the operating unit's rotating wheel mechanism is assembled using this assembly method, the rotating wheel body 200 will not rotate relative to the housing 100 when the traction rope is installed. The position of the rotating wheel body 200 is accurate, so that the maximum angle when the rotating wheel body 200 rotates in two opposite directions meets the set value. The installation quality is high, the control precision is high, and the use is safe and reliable.

[0076] This embodiment also provides an endoscope, which includes the operating section rotary mechanism of the foregoing embodiment, and has at least all the advantages of the operating section rotary mechanism.

[0077] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An operating part rotary mechanism, used in conjunction with a limiting member (001) during assembly, characterized in that, Includes a housing (100) and a rotating body (200), wherein: The rotating wheel body (200) is rotatably mounted on the housing (100) around a preset axis. A first limiting part (112) is provided on one of the housing (100) and the rotating wheel body (200), and a second limiting part (221) is provided on the other of the housing (100) and the rotating wheel body (200). Both the first limiting part (112) and the second limiting part (221) are used to detachably engage with the limiting member (001) during the assembly of the housing (100) and the wheel body (200); when the limiting member (001) is simultaneously connected to the first limiting part (112) and the second limiting part (221), the first limiting part (112) and the second limiting part (221) are relatively fixed relative to each other in the circumferential direction of the preset axis. The rotating wheel body (200) has a first surface (210) and a second surface (220) opposite to each other in the extension direction of the preset axis. The rotating wheel body (200) is provided with a guide groove (250) that passes through the first surface (210) and the second surface (220). The first limiting part (112) passes through the guide groove (250) and is slidably engaged with the guide groove (250) in the circumferential direction of the preset axis. The guide groove (250) has a first groove wall (251) and a second groove wall (252) arranged circumferentially on the preset axis; when the wheel body (200) rotates relative to the housing (100), the first limiting part (112) can contact one of the first groove wall (251) and the second groove wall (252) to limit the rotation angle of the wheel body (200) relative to the housing (100); The first limiting part (112) is provided with a limiting protrusion, the first end of the limiting protrusion is fixedly connected to the housing (100), and the second end of the limiting protrusion is suspended. The first surface (210) is located on the side of the second surface (220) near the first end, and the second limiting part (221) is configured as a limiting groove (2211) on the second surface (220); the limiting member (001) is used to simultaneously engage with the limiting protrusion and the limiting groove (2211); the limiting member (001) is fixed relative to the limiting protrusion and the limiting groove (2211) in the circumferential direction of the preset axis.

2. The operating unit rotary mechanism according to claim 1, characterized in that: One side of the limiting groove (2211) is connected to the guide groove (250).

3. The operating unit rotary mechanism according to claim 1, characterized in that: The guide groove (250) has an inner groove wall (253) and an outer groove wall (254) arranged radially on the wheel body (200). The inner groove wall (253) is located on the side of the outer groove wall (254) close to the center of the wheel body (200). The limiting protrusion is in clearance fit with both the inner groove wall (253) and the outer groove wall (254). The limiting groove (2211) and the first surface (210) are spaced apart in the extension direction of the preset axis.

4. The operating part rotating wheel mechanism according to any one of claims 1-3, characterized in that: The number of the first limiting part (112) or the second limiting part (221) is multiple, and the multiple first limiting parts (112) or the multiple second limiting parts (221) are arranged at intervals in the circumferential direction of the preset axis.

5. The operating part rotating wheel mechanism according to any one of claims 1-3, characterized in that: A damping structure (500) is provided between the housing (100) and the wheel body (200), the damping structure (500) being used to provide damping when the wheel body (200) rotates relative to the housing (100).

6. A method for assembling an operating part rotary mechanism, characterized in that, The assembly method for the rotary mechanism of the operating part, applicable to any one of claims 1-5, comprises the following steps: The rotating wheel body (200) is mounted on the housing (100) and the two are rotatably engaged; The limiting member (001) is simultaneously connected to the first limiting part (112) and the second limiting part (221), so that the limiting member (001) is simultaneously fixed relative to the first limiting part (112) and the second limiting part (221) in the circumferential direction of the preset axis; At least one end of a traction wire is fixed to the wheel body (200); Remove the limiting member (001) from the first limiting part (112) and the second limiting part (221).

7. An endoscope, characterized in that, The endoscope includes: The operating part rotary mechanism according to any one of claims 1-6.

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