Traction mechanism and endoscope
By designing a traction mechanism including mounting parts, traction rope, first adjustment member and second adjustment member, precise elastic adjustment of traction rope is achieved, and the problem of low adjustment accuracy of traction rope in the prior art is solved, and the traction accuracy and ease of operation are improved.
Patent Information
- Application Number
- CN202420664468.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-03-29
AI Technical Summary
In the existing endoscope traction mechanism, the adjustment accuracy of the traction rope is low, resulting in a decrease in the traction accuracy, and the rotation angle of the proximal knob or lever cannot be effectively transmitted to the distal execution component, resulting in motion errors.
A traction mechanism is designed, including a mounting member, a traction rope, a first adjusting member and a second adjusting member. By converting the relative rotation of the first adjusting member and the second adjusting member into relative axial movement, the distance between the mounting member and the traction rope is adjusted, thereby achieving accurate elastic adjustment of the traction rope.
Through the design of the traction mechanism, fine adjustment of the traction rope can be achieved, traction accuracy can be improved, motion errors can be reduced, and the operation is simple and there is no need to adjust the welding position of the traction rope.
Smart Images
Figure CN222870485U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of medical devices, and more specifically, to a traction mechanism and an endoscope. Background Art
[0002] The bending and zooming operations of the bending part of the endoscope are mostly performed by rotating the knob or lever on the operating handle to drive the traction rope connected thereto to move, thereby driving the corresponding bending of the bending part or the movement of the lens at the head end to achieve zooming. However, with frequent operations, the traction rope is frequently subjected to tension and pressure, causing it to stretch and lengthen. In addition, with the increase in years of use and the aging of equipment such as the traction rope, the traction rope will gradually become longer. The increase in the length of the traction rope will cause the traction rope to become loose, and the accuracy of its traction will decrease. The angle of rotation of the proximal knob or lever cannot be actually transmitted to the distal actuator, resulting in errors in the movement of the actuator. Therefore, it is necessary to repeatedly adjust the welding position of the traction rope (that is, after cutting the excessively long part of the traction rope, re-weld the traction rope and its connecting parts) to adjust the tightness of the traction rope. However, the welding position adjustment operation is complicated, time-consuming, and the adjustment accuracy is low. Utility Model Content
[0003] In view of this, the purpose of the present application is to provide a traction mechanism and an endoscope, the structural design of which can effectively solve the problem of low adjustment accuracy of the traction rope.
[0004] In order to achieve the above objectives, this application provides the following technical solutions:
[0005] Traction mechanism, including:
[0006] Install components;
[0007] Tow rope;
[0008] A first adjusting member, used to connect with the mounting member;
[0009] A second adjusting member is used to be connected to the traction rope, the first adjusting member and the second adjusting member are rotatably connected, and the relative rotation between the first adjusting member and the second adjusting member can be converted into relative axial movement to adjust the distance between the mounting component and the traction rope;
[0010] The rotation angle prompt structure is arranged on any one or more of the first adjusting member, the second adjusting member and the mounting component, and is used to indicate the relative rotation angle between the first adjusting member and the second adjusting member.
[0011] Optionally, in the above-mentioned traction mechanism, the first adjustment member is rotatably disposed in the cavity of the mounting component, and the rotation angle prompt structure includes at least one limiting portion disposed on the outer circumference of the first adjustment member and a through hole disposed on the side wall of the mounting component and corresponding to the limiting portion.
[0012] Optionally, in the above-mentioned traction mechanism, the rotation angle prompt structure also includes a fastener, which is used to pass through the through hole and press the limiting portion; the shape of the limiting portion is adapted to the shape of the bottom end of the fastener.
[0013] Optionally, in the above-mentioned traction mechanism, the limiting portion is a limiting groove, and the shape of the bottom end of the fastener is adapted to the shape of the bottom of the limiting groove.
[0014] Optionally, in the above-mentioned traction mechanism, the bottom end of the fastener and the bottom of the limiting groove are both flat.
[0015] Optionally, in the above-mentioned traction mechanism, the number of the limiting portions is at least two, and the at least two limiting portions are distributed along the outer circumference of the first adjusting member and are located on the same cross-section of the first adjusting member.
[0016] Optionally, in the above-mentioned traction mechanism, the rotation angle prompt structure includes a dial and a reference portion cooperating with the dial, and the dial includes a plurality of angle indication marks arranged at preset angle intervals along the circumferential direction; wherein,
[0017] The scale plate is arranged on the outer peripheral surface of one of the first adjusting member and the second adjusting member, and the reference part is arranged on the outer peripheral surface of the other of the first adjusting member and the second adjusting member;
[0018] or,
[0019] The scale plate is arranged on the outer peripheral surface or end surface of one of the first adjusting member and the mounting component, and the reference part is arranged on the outer peripheral surface or end surface of the other of the first adjusting member and the mounting component.
[0020] Optionally, in the above-mentioned traction mechanism, the reference portion includes a reference indication line and / or a reference indication protrusion and / or a reference indication groove.
[0021] Optionally, in the above-mentioned traction mechanism, the traction device also includes a rotation-stopping structure, and the rotation-stopping structure is detachably arranged between the first adjusting member and the second adjusting member to limit the circumferential position.
[0022] Optionally, in the above-mentioned traction mechanism, the outer peripheral surface of one of the first adjusting member and the second adjusting member is provided with a boss protruding in the radial direction, and the outer peripheral surface of the boss includes an abutment surface that is a non-rotating surface. The anti-rotation structure includes a connecting member, and one end of the connecting member has a cover shell that cooperates with the abutment surface, and the cover shell is used to cover the outside of the abutment surface for circumferential limitation, and the other end of the connecting member is detachably connected to the other of the first adjusting member and the second adjusting member.
[0023] Optionally, in the above-mentioned traction mechanism, the boss is in the form of a polygonal column, and the abutting surface includes at least two adjacent side walls of the boss.
[0024] Optionally, in the above-mentioned traction mechanism, when the first adjusting member is rotatably disposed in the cavity of the mounting component, and the rotation angle prompt structure includes at least one limiting portion disposed on the outer peripheral surface of the first adjusting member and a through hole disposed on the side wall of the mounting component and corresponding to the limiting portion, the mating surface of the cover shell and the side wall of a boss is parallel to a surface of the mounting component on which the through hole is provided.
[0025] Optionally, in the above-mentioned traction mechanism, when the boss is arranged on the outer peripheral surface of the first adjusting member and the number of the limiting parts is at least two, the outer peripheral surface of the boss is provided with abutment surfaces corresponding to each of the limiting parts, so that when the limiting part rotates to a position corresponding to the through hole, the cover shell is arranged outside the corresponding abutment surface.
[0026] Optionally, in the above-mentioned traction mechanism, the anti-rotation structure further includes a connecting block and a fastening screw, and an end edge of the connecting piece away from the cover shell is provided with a mounting groove; wherein,
[0027] The connecting block is arranged on the first adjusting member, and threaded holes are arranged on the connecting block and the first adjusting member, and the fastening screws are passed through the mounting grooves and locked with the threaded holes;
[0028] or,
[0029] The connecting block is arranged on the second adjusting member, and threaded holes are arranged on the connecting block and the second adjusting member, and the fastening screws are passed through the mounting grooves and locked with the threaded holes.
[0030] The traction mechanism provided by the present application includes a mounting component, a traction rope, a first adjusting component, a second adjusting component and a rotation angle prompting structure. The first adjusting component is used to connect with the mounting component; the second adjusting component is used to connect with the traction rope, the first adjusting component and the second adjusting component are rotatably connected, and the relative rotation between the first adjusting component and the second adjusting component can be converted into relative axial movement to adjust the distance between the mounting component and the traction rope; the rotation angle prompting structure is provided on any one or more of the first adjusting component, the second adjusting component and the mounting component, and is used to indicate the relative rotation angle between the first adjusting component and the second adjusting component.
[0031] Based on the above scheme, it can be seen that in the traction mechanism provided by the present application, a certain distance is reserved between the mounting component and the traction rope, and the distance can be adjusted by the relative operation between the first adjusting member and the second adjusting member, so as to adjust the tightness of the traction rope. Specifically, when the traction mechanism provided by the present application is used to adjust the tightness of the traction rope, the first adjusting member or the second adjusting member can be rotated to make the first adjusting member and the second adjusting member move relative to each other in the axial direction. During this period, since the second adjusting member is fixedly connected to the traction rope, the traction rope can also be driven by the second adjusting member to move relative to the first adjusting member in the axial direction, so that the traction rope is close to or away from the mounting component, thereby adjusting the tightness of the traction rope. The above adjustment process does not need to adjust the welding position of the traction rope, and the operation is simple. In particular, in the present application, since the moving stroke of the traction rope is determined by the rotation angle between the first adjusting member and the second adjusting member, and during the adjustment process, the rotation angle prompt structure can indicate the relative rotation angle between the first adjusting member and the second adjusting member, it is convenient for the operator to accurately grasp the adjustment stroke, thereby achieving fine adjustment of the traction rope.
[0032] In order to achieve the above object, the present application also provides an endoscope, which includes any one of the above traction mechanisms. Since the above traction mechanism has the above technical effects, the endoscope having the traction mechanism should also have corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0034] Figure 1 This is a schematic diagram of the assembly of a traction mechanism of a specific embodiment of the present application;
[0035] Figure 2 for Figure 1 Schematic diagram of the explosion structure;
[0036] Figure 3 for Figure 1 A partial cross-sectional view of
[0037] Figure 4 for Figure 1 A schematic structural diagram of the first adjusting member;
[0038] Figure 5 for Figure 1 The structural diagram of the connecting parts;
[0039] Figure 6for Figure 1 Schematic diagram of the structure of the abort block.
[0040] The following are marked in the accompanying drawings:
[0041] Mounting component 100, traction rope 200, first adjusting member 300, second adjusting member 400, rotation angle prompt structure 500, anti-rotation structure 600, boss 700;
[0042] Limiting portion 510, through hole 520, fastener 530;
[0043] Connecting piece 610 , cover shell 611 , mounting groove 612 , connecting block 620 , fastening screw 630 , U-shaped groove 621 . DETAILED DESCRIPTION
[0044] The embodiment of the present application discloses a traction mechanism and an endoscope to achieve fine adjustment of the traction rope.
[0045] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0046] The endoscope includes an insertion part, an operating part and a light guide part. The insertion part can enter the human body and includes a head end, a bending part and an insertion tube according to the function. The operating part includes a knob, a water and air valve, a suction valve and various function buttons, which are used to control the shape of the insertion part and realize auxiliary functions. The variable-focus electronic endoscope is a medical device that can be used to provide imaging examination and treatment for the human digestive tract. On the basis of the ordinary endoscope, under the principle that the operating part and the light guide part remain basically unchanged, the objective lens has a variable-focus function added to realize the fine observation of the structure of the tiny lesion. The variable-focus electronic endoscope generally realizes optical zoom through a traction device. The operating part is provided with a lever and a rotating drum coaxially connected to the lever. The rotating drum is rotatably connected to one end of the connecting rod, and the other end of the connecting rod is rotatably connected to a sliding member, which is connected to one end of the traction rope, and the other end of the traction rope is connected to the focusing assembly. The rotation of the lever and the rotating drum on the operating part drives the sliding block to slide along the axial direction of the traction rope, and the sliding block drives the traction rope to move, thereby driving the lens at the head end to move, thereby realizing the zoom function.
[0047] When performing endoscopic surgery, the image must be clear enough to observe and judge the lesions, so the accuracy of focal length adjustment needs to be ensured. However, frequent zoom switching and aging of the instrument will cause the traction rope to gradually become longer, so that the angle of rotation of the rotating drum driven by the lever cannot be actually transmitted to the lens at the head end, causing the movement position of the lens to have errors and be inaccurate. Therefore, it is necessary to accurately adjust the length of the traction rope to ensure the focusing accuracy. The traction mechanism provided in the present application can achieve precise adjustment of the tightness of the traction rope, and is applicable to but not limited to controlling the bending of the bending part of the endoscope, controlling the deflection angle of the lifting forceps, and the zoom of the variable-focus electronic endoscope.
[0048] In a specific embodiment, see Figure 1-Figure 3The traction mechanism provided in the present application includes a mounting component 100, a traction rope 200, a first adjustment component 300, a second adjustment component 400 and a rotation angle prompt structure 500. Among them, the mounting component 100 can be specifically the above-mentioned sliding component, or it can be other components for connecting the traction rope 200, or the traction rope 200 can be divided into two parts, one part is connected to the second adjustment component 400, and the other part is connected to the first adjustment component 300 as the mounting component 100. A cavity can be specifically provided on the mounting component 100, and one end of the first adjustment component 300 is inserted into the cavity. The first adjustment component 300 is connected to the mounting component 100, and the second adjustment component 400 is connected to the traction rope 200. The first adjustment component 300 is rotatably connected to the second adjustment component 400, and the two can be sleeved, that is, the first adjustment component 300 is sleeved outside the second adjustment component 400, or the second adjustment component 400 is sleeved outside the first adjustment component 300. And the rotation of the first adjusting member 300 and the second adjusting member 400 can be converted into relative axial movement, so that the first adjusting member 300 or the second adjusting member 400 can be rotated to adjust the distance between the installation component 100 and the traction rope 200, so as to adjust the tightness of the traction rope 200. It is understandable that after the axial relative displacement of the first adjusting member 300 and the second adjusting member 400 is adjusted in place, the first adjusting member 300 and the second adjusting member 400 can be locked by means of a self-locking structure, etc., and the distance between the corresponding traction rope 200 and the installation component 100 is fixed, so that normal traction work can be performed, such as achieving zooming. The rotation angle prompt structure 500 is provided on any one or more of the first adjusting member 300, the second adjusting member 400 and the installation component 100, and is used to indicate the relative rotation angle of the first adjusting member 300 and the second adjusting member 400. It should be noted that the "multiple" here can refer to two or three. Since the relationship between the relative rotation angle and the axial movement of the first adjusting member 300 and the second adjusting member 400 is limited by the matching mode of the two, the relative axial movement length of the first adjusting member 300 and the second adjusting member 400 can be determined by the rotation angle. Therefore, the indication of the rotation angle by the rotation angle prompt structure 500 facilitates the operator to accurately control the axial movement length.
[0049] When the traction mechanism provided by the present application is used to adjust the length of the wire rope, the first adjusting member 300 and the second adjusting member 400 can be rotated to make the first adjusting member 300 and the second adjusting member 400 move relative to each other in the axial direction. During this period, since the second adjusting member 400 is fixedly connected to the traction rope 200, the traction rope 200 can also move relative to the first adjusting member 300 in the axial direction under the drive of the second adjusting member 400, so that the traction rope 200 is close to or away from the mounting component 100, thereby adjusting the tightness of the traction rope 200. The above adjustment process does not require adjusting the welding position of the traction rope 200, and the operation is simple. In the present application, since the moving stroke of the traction rope 200 is determined by the rotation angle between the first adjusting member 300 and the second adjusting member 400, and during the adjustment process, the rotation angle prompting structure 500 can indicate the relative rotation angle between the first adjusting member 300 and the second adjusting member 400, it is convenient for the operator to accurately grasp the adjustment stroke, thereby achieving fine adjustment of the traction rope 200.
[0050] In some embodiments, the first adjusting member 300 is rotatably disposed in the cavity of the mounting member 100, and the rotation angle prompting structure 500 includes at least one limiting portion 510 disposed on the outer peripheral surface of the first adjusting member 300 and a through hole 520 disposed on the side wall of the mounting member 100 and corresponding to the limiting portion 510. Since the first adjusting member 300 and the second adjusting member 200 are rotatably connected, by rotatably connecting the first adjusting member 300 with the mounting member 100, when the first adjusting member 300 rotates in the cavity of the mounting member 100, it rotates relative to the second adjusting member 400, and the tightness of the traction rope 200 can be adjusted by rotating the first adjusting member 300. The through hole 520 is arranged corresponding to the limiting portion 510, so that during adjustment, the position of the limiting portion 510 can be observed through the through hole 520, such as the limiting portion 510 is exposed, partially exposed or not exposed by the through hole 520, so that the rotation angle prompting function can be played through the cooperation between the limiting portion 510 and the through hole 520. If one limiting portion 510 is provided, each time the limiting portion 510 faces the through hole 520 , the first adjusting member rotates one circle, that is, 360°.
[0051] In some embodiments, a fastener 530 is further included, and the fastener 530 is used to penetrate the through hole 520 and press the first adjusting member 300. Then the through hole 520 can not only play a role in indicating the rotation angle, but also cooperate with the fastener 530 to lock the first adjusting member 300 after it is adjusted into place, so as to realize the normal traction function of the traction mechanism and simplify the structure. It can be understood that the fastener 530 presses the first adjusting member 300, including the fastener 530 pressing the limiting portion 510 set on the outer peripheral surface of the first adjusting member 300 or the outer peripheral surface portion without the limiting portion 510.
[0052] In some embodiments, the rotation angle prompt structure 500 further includes a fastener 530, which is used to penetrate the through hole 520 and press the limit portion 510; the shape of the limit portion 510 is adapted to the bottom shape of the fastener 530. In this example, the fastener 530 is not only used to fix the first adjustment member 300, but also can cooperate with the limit portion 510 to play a role in rotation angle prompt. Specifically, by providing the limit portion 510 on the outer peripheral surface of the first adjustment member 300 and cooperating with the fastener 530, on the one hand, the fastener 530 can press the limit portion 510, thereby fixing the first adjustment member 300 with the mounting component 100. When the traction rope 200 needs to be adjusted, the fastener 530 is loosened to rotate the first adjustment member 300, and when the first adjustment member 300 rotates, the mounting component 100 does not rotate therewith. After the first adjusting member 300 is rotated to the right position and the limiting portion 510 is opposite to the through hole 520 on the mounting member 100, the fastener 530 is passed through the through hole 520 and the limiting portion 510 is pressed, so that the first adjusting member 300 and the mounting member 100 can be fixed, thereby realizing the normal traction function of the traction rope 200. In addition, through the cooperation of the limiting portion 510 and the fastener 530, the rotation angle of the first adjusting member 300 can be indicated, that is, the first adjusting member 300 can provide an indication function every time the fastener 530 and the limiting portion 510 cooperate and rotate to the fastener 530 and the limiting portion 510 cooperate again. When N limiting portions 510 are evenly arranged on the outer circumference of the first adjusting member 300, the first adjusting member 300 can provide an indication function every time it rotates 1 / N circle (i.e. 360 / N degrees), and N is an integer not less than 1. It can be seen that the cooperation between the limiter 510 and the fastener 530 can not only realize the detachable connection, but also play an indicating role, simplify the structure, and facilitate operation. The corresponding relationship between the fastener 530 and the limiter 510 can be observed through the through hole 520 on the mounting component 100. When the through hole is opposite to the limiter 510, the fastener 530 is installed accordingly and then the fastener is opposite to the limiter 510. In addition, the different hand feel provided to the fastener 530 when the first adjusting member 300 rotates to the limiter 510 can also be judged.
[0053] In some embodiments, see Figure 3 and Figure 4 The limiting portion 510 is a limiting groove, and the bottom shape of the fastener 530 is adapted to the shape of the bottom of the limiting groove. The limiting groove has a simple structure, and during the rotation of the first adjusting member 300, it is easy to observe through the through hole 520, and can cooperate with the fastener 530 to provide an obvious hand feel, thereby better playing the role of rotation angle prompt.
[0054] Further, the bottom end of the fastener 530 and the bottom of the limiting groove are both planes, so the bottom end of the fastener 530 can be against the bottom plane of the limiting groove. The plane matching can not only ensure the fastening reliability, but also provide a good positioning effect. In addition, the plane matching can play an automatic adjustment role on the angle of the first adjusting member 300 when the fastener 530 is pressed, that is, as the fastener 530 is pressed, when the bottom plane of the limiting groove and the bottom plane of the fastener 530 are slightly inclined, the first adjusting member 300 can be pushed to rotate and the bottom plane of the limiting groove is parallel to the bottom plane of the fastener 530, and finally pressed to fix the first adjusting member 300 with the mounting component 100. In other embodiments, the limiting portion 510 can also be a limiting protrusion formed by the radial protrusion of the outer peripheral surface of the first adjusting member 300. Specifically, the top surface of the limiting protrusion can be plane. Alternatively, the limiting portion 510 can be a limiting screw hole, and is threaded with the fastener 530.
[0055] In some embodiments, the fastener 530 is a screw, and the through hole 520 on the mounting component 100 is a threaded hole to cooperate with the screw. The bottom end of the screw is used to cooperate with the limiting portion 510 to achieve compression and positioning.
[0056] In some embodiments, the number of the limiting parts 510 is at least two, and at least two limiting parts 510 are distributed along the outer circumference of the first adjusting member 300 and are located on the same cross section of the first adjusting member 300, then each limiting part 510 can correspond to the through hole 520 on the mounting member 100. By setting at least two limiting parts 510, when the first adjusting member 300 rotates each time the angle corresponding to two adjacent limiting parts 510, the cooperation between the limiting part 510 and the fastener 530 can provide an indication function, thereby further improving the adjustment accuracy of the traction rope 200. The specific number of the limiting parts 510 can be set as needed. When the space allows and the compression requirements of the fastener 530 are met, the more the limiting parts 510 are, the higher the adjustment accuracy of the traction rope 200. Further, the limiting parts 510 are evenly distributed along the outer circumference of the first adjusting member 300, and the indication function is more intuitive.
[0057] In some embodiments, the rotation angle prompt structure 500 includes a dial and a reference part matched with the dial, and the dial includes a plurality of angle indication marks arranged at preset angle intervals along the circumference. In one embodiment, the dial is arranged on the outer peripheral surface of one of the first adjusting member 300 and the second adjusting member 400, and the reference part is arranged on the outer peripheral surface of the other. By setting the dial and the reference part, before adjusting the length of the traction rope 200, the angle corresponding to the angle indication mark on the dial corresponding to the reference part can be read, and then the first adjusting member 300 or the second adjusting member 400 can be rotated as needed, and the angle of relative rotation of the first adjusting member 300 and the second adjusting member 400 can be obtained by reading the angle corresponding to the angle indication mark on the dial corresponding to the reference part. In another embodiment, the dial is arranged on the outer peripheral surface or end surface of one of the first adjusting member 300 and the mounting component 100, and the reference part is arranged on the outer peripheral surface or end surface of the other of the first adjusting member 300 and the mounting component 100. When the first adjusting member 300 is rotatably disposed in the cavity of the mounting component 100, one of the scale plate or the reference portion is disposed on the outer peripheral surface of the first adjusting member 300, and the other is disposed on the end surface or the outer peripheral surface of the mounting portion facing the first adjusting member 300. Before adjusting the length of the traction rope 200, the angle corresponding to the angle indicator mark on the scale plate corresponding to the reference portion can be read, and then the first adjusting member 300 can be rotated, and the angle corresponding to the angle indicator mark on the scale plate corresponding to the reference portion can be read again to obtain the angle that the first adjusting member 300 has rotated.
[0058] The specific angle indicator may include but is not limited to structures such as engraved lines, color lines, ridges, and pits, and the reference part may also include but is not limited to structures such as engraved lines, color lines, ridges, ridges, and pits. The size of the specific preset angle interval can be set as needed, and the smaller the interval angle, the higher the adjustment accuracy of the traction rope 200.
[0059] Specifically, the reference portion or angle indicator on the second adjusting member 400 extends axially. When the first adjusting member 300 and the second adjusting member 400 rotate relative to each other so that the first adjusting member 300 and the second adjusting member 400 move relative to each other axially, the axial length of the reference portion or angle indicator on the second adjusting member is not less than its axial displacement, so that it can continuously provide an indication function and ensure the adjustment accuracy.
[0060] In some embodiments, the rotation angle prompt structure 500 may adopt one of the various rotation angle prompt structures 500 described above, or may also adopt a combination of multiple of the various rotation angle prompt structures 500 described above, providing indication in multiple ways to further ensure the adjustment accuracy and reliability of the traction rope 200.
[0061] In some embodiments, the first adjusting member 300 is rotatably connected to the mounting member 100; and / or, the second adjusting member 400 is rotatably connected to the traction rope 200. When the traction rope 200 is adjusted, the first adjusting member 300 or the second adjusting member 400 needs to be rotated. Therefore, when the first adjusting member 300 is rotatably connected to the mounting member 100, the first adjusting member 300 can be rotated during adjustment; when the second adjusting member 400 is rotatably connected to the traction rope 200, the second adjusting member 400 can be rotated during adjustment. As set above, when the first adjusting member 300 or the second adjusting member 400 rotates, the corresponding mounting member 100 and the traction rope 200 do not rotate therewith, thereby avoiding the influence of the adjustment of the traction rope 200 on the overall structure and assembly. Specifically, the first adjusting member 300 is rotatably connected to the mounting member 100, and the mounting member 100 is larger in size than the traction rope 200, which is convenient for rotational connection, and the second adjusting member 400 is directly fixedly connected to the traction rope 200. It can be understood that the rotational connection here can include both a non-detachable rotational connection and a detachable rotational connection, such as being detachably connected at different circumferential positions, and then being relatively rotated and reconnected after being detached.
[0062] In some embodiments, one of the first adjusting member 300 and the second adjusting member 400 is provided with an internal thread, and the outer circumferential surface of the other is provided with an external thread that matches the internal thread. That is, the first adjusting member 300 and the second adjusting member 400 are threadedly matched, and the traction rope 200 can be adjusted by rotating the first adjusting member 300 or the second adjusting member 400. Due to the threaded matching, the second adjusting member 400 and the first adjusting member 300 can move axially relative to each other. The thread matching structure is simple and easy to process. And the self-locking of the first adjusting member 300 and the second adjusting member 400 can be achieved by setting the thread, such as using a trapezoidal thread, that is, locking at any position within the thread stroke. The thread can specifically be a fine thread or a coarse thread. In the case where the rotation angle prompt structure 500 includes N limit portions 510 evenly distributed along the circumference, the adjustment accuracy of the traction rope 200 is pitch / N. If Figure 4 When two limiting portions 510 are evenly arranged along the circumferential direction as shown in the figure, the minimum adjustable length of the traction rope 200 is the pitch / 2.
[0063] In other embodiments, a cam groove is provided on the outer circumference of one of the first adjusting member 300 and the second adjusting member 400, and a pin is provided on the other, and the pin is inserted into the cam groove and can slide along the cam groove. That is, a pin is provided on the first adjusting member 300 or the second adjusting member 400 located outside, and a cam groove is provided on the first adjusting member 300 or the second adjusting member 400 located inside. Taking the first adjusting member 300 as an example of being sleeved outside the second adjusting member 400, a pin is provided on the first adjusting member 300, and a cam groove is provided on the outer circumference of the second adjusting member 400, and the pin is inserted into the cam groove. When the first adjusting member 300 or the second adjusting member 400 rotates, due to the cooperation of the pin and the cam groove, the second adjusting member 400 and the first adjusting member 300 move relative to each other axially, and the tightness of the traction rope 200 can also be adjusted, and the cam groove structure can provide better straightness.
[0064] In some embodiments, see Figure 2 The traction mechanism further includes a rotation-stopping structure 600, which is detachably disposed between the first adjusting member 300 and the second adjusting member 400 to limit the circumferential position. By providing the rotation-stopping structure 600, when the traction rope 200 is adjusted, the rotation-stopping structure 600 is disassembled to release the circumferential position limit of the first adjusting member 300 and the second adjusting member 400, so that the first adjusting member 300 or the second adjusting member 400 can be rotated. When the length of the traction rope 200 is adjusted to the desired position, the rotation-stopping structure 600 is fixed between the first adjusting member 300 and the second adjusting member 400, so that the circumferential position limit of the first adjusting member 300 and the second adjusting member 400 can be achieved, so as to avoid the relative rotation between the first adjusting member 300 and the second adjusting member 400 during the normal use of the traction rope 200.
[0065] In some embodiments, see Figure 2 and Figure 4 The outer circumference of one of the first adjusting member 300 and the second adjusting member 400 is provided with a boss 700 protruding in the radial direction. By providing the boss 700, it is convenient to apply a rotational force to the first adjusting member 300 or the second adjusting member 400 to achieve the adjustment of the traction rope 200.
[0066] In some embodiments, see Figure 2 , Figure 4 and Figure 5The outer peripheral surface of the boss 700 includes a non-rotating abutting surface, and the anti-rotation structure 600 includes a connecting member 610, one end of the connecting member 610 has a cover 611 that matches the abutting surface, and the cover 611 is used to cover the outside of the abutting surface to limit the circumference, and the other end of the connecting member 610 is detachably connected to the other of the first adjusting member 300 and the second adjusting member 400. Taking the boss 700 provided on the outer peripheral surface of the first adjusting member 300 as an example, when the traction rope 200 is adjusted, the connecting member 610 is removed from the first adjusting member 300 and the second adjusting member 400, and the cover 611 releases the circumferential limit of the abutting surface, so that the first adjusting member 300 and the second adjusting member 400 can rotate relative to each other to achieve the adjustment of the traction rope 200. After the traction rope 200 is adjusted into place, one end of the connecting member 610 is fixed to the second adjusting member 400, and the cover 611 at the other end is set outside the abutting surface. Through the shape matching of the cover 611 and the abutting surface, the circumferential limit of the first adjusting member 300 and the second adjusting member 400 can be achieved. The anti-rotation structure 600 adopts the above-mentioned setting, which has a simple structure, is easy to disassemble and assemble, and is easy to implement. It can be understood that the matching length of the cover 611 and the abutting surface along the axial direction should be able to meet the adjustment requirements of the distance between the traction rope 200 and the mounting component 100. Specifically, the abutting surface can slide along the cover 611 so that it can play a role in stopping rotation at continuous positions in the axial direction.
[0067] In some embodiments, the boss 700 is a polygonal column, and the abutting surface includes at least two adjacent side walls of the boss 700. The side walls of the polygonal column abut against the housing 611 to limit the relative rotation of the boss 700 and the housing 611, thereby achieving circumferential limiting of the first adjusting member 300 and the second adjusting member 400, and the limiting effect is stable and reliable.
[0068] In some embodiments, when the first adjusting member 300 is rotatably disposed in the cavity of the mounting member 100, and the rotation angle prompting structure 500 includes at least one stopper 510 disposed on the outer peripheral surface of the first adjusting member 300 and a through hole 520 disposed on the side wall of the mounting member 100 and corresponding to the stopper 510, the mating surface of the cover 611 mating with the side wall of a boss 700 is parallel to the side of the mounting member 100 provided with the through hole 520. The abutting surface includes at least two adjacent side walls of the boss 700, and the cover 611 is mated with at least two adjacent side walls of the boss 700, and one of the mating surfaces of the cover 611, that is, a mating surface of the cover 611 and the boss, is arranged parallel to the side of the mounting member 100 provided with the through hole 520. When assembling, the installation direction of the cover 611 is consistent with the installation direction of the fastener 530, thereby facilitating installation.
[0069] Further, when the boss 700 is arranged on the outer peripheral surface of the first adjusting member 300 and the number of the limiting portions 510 is at least two, the outer peripheral surface of the boss 700 is provided with abutment surfaces corresponding to each limiting portion 510 (specifically, abutment surfaces located on the same axis as each limiting portion), so that when any limiting portion 510 is rotated to a position corresponding to the through hole 520, the cover shell 611 can be covered outside the abutment surface corresponding to the limiting portion 510, thereby ensuring that the cover shell 611 can be installed according to the above-mentioned installation direction at every angle.
[0070] In some embodiments, see Figure 2 and Figure 6 The anti-rotation structure 600 further includes a connection block 620 and a fastening screw 630. The edge of one end of the connection member 610 away from the housing 611 is provided with a mounting groove 612, wherein the connection block 620 is provided on the first adjusting member 300, and threaded holes are provided on the connection block 620 and the first adjusting member 300, and the fastening screw 630 is passed through the mounting groove 612 and locked with the threaded hole; or, the connection block 620 is provided on the second adjusting member 400, and threaded holes are provided on the connection block 620 and the second adjusting member 400, and the fastening screw 630 is passed through the mounting groove 612 and locked with the threaded hole. That is, one of the first adjusting member 300 or the second adjusting member 400 is provided with a boss 700, and the other cooperates with the connection block 620, and at least one of the connection block 620 and the connection block 620 is provided with a threaded hole that cooperates with the fastening screw 630. It is understandable that the connecting block 620 can be a part independent of the first adjusting member 300 or the second adjusting member 400, or a part of the first adjusting member 300 or the second adjusting member 400. By providing a mounting groove 612 at one end of the connecting member 610 and cooperating with the connecting block 620 and the fastening screw 630, when the connecting member 610 is disassembled, the fastening screw 630 is loosened, and then the connecting member 610 is axially pulled out from the fastening screw 630, so that the disassembly of the connecting member 610 can be achieved. When assembling, the connecting member 610 is pushed so that its mounting groove 612 is pushed into the fastening screw 630, and then the fastening screw 630 is tightened, so that the connecting member 610 and the connecting block 620 can be locked as a whole with the first adjusting member 300 or the second adjusting member 400. As set above, the connecting member 610 is easy to disassemble and assemble, and the fastening screw 630 does not need to be removed when disassembling, which further facilitates the operation, and the fastening screw 630 is not easy to lose.
[0071] In some embodiments, the bottom end of the connection block 620 is provided with a U-shaped groove 621, the first adjustment member 300 or the second adjustment member 400 is inserted into the U-shaped groove 621, and the first adjustment member 300 or the second adjustment member 400 disposed in the U-shaped groove 621 is provided with a threaded hole, and the top of the connection block 620 is a plane that abuts against the connection member 610. Through the provision of the connection block 620, it can better cooperate with the connection member 610, ensure reliable connection with the first adjustment member 300 or the second adjustment member 400, and facilitate disassembly and assembly. In other embodiments, a mounting hole can also be provided on the connection block 620, and the first adjustment member 300 or the second adjustment member 400 is penetrated in the mounting hole.
[0072] In some embodiments, the connector 610 may be a plate, which occupies little space.
[0073] Based on the traction mechanism provided in the above embodiments, the present application further provides an endoscope, which includes any one of the traction mechanisms in the above embodiments. Since the endoscope adopts the traction mechanism in the above embodiments, please refer to the above embodiments for the beneficial effects of the endoscope.
[0074] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.
[0075] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A traction mechanism, characterized in that: include: Mounting component (100); Traction rope (200); A first adjusting member (300) used for connecting to the mounting member (100); A second adjusting member (400) is used to be connected to the traction rope (200), the first adjusting member (300) and the second adjusting member (400) are rotatably connected, and the relative rotation between the first adjusting member (300) and the second adjusting member (400) can be converted into relative axial movement to adjust the distance between the mounting component (100) and the traction rope (200); A rotation angle prompt structure (500) is provided on any one or more of the first adjusting member (300), the second adjusting member (400) and the mounting component, and is used to indicate the relative rotation angle between the first adjusting member (300) and the second adjusting member (400).
2. The traction mechanism according to claim 1, characterized in that: The first adjusting member (300) is rotatably disposed in the cavity of the mounting component (100), and the rotation angle prompt structure (500) comprises at least one limiting portion (510) disposed on the outer peripheral surface of the first adjusting member (300) and a through hole (520) disposed on the side wall of the mounting component (100) and corresponding to the limiting portion (510).
3. The traction mechanism according to claim 2, characterized in that: The rotation angle prompt structure (500) further comprises a fastener (530), wherein the fastener (530) is used to penetrate the through hole (520) and press the limiting portion (510); the shape of the limiting portion (510) is adapted to the shape of the bottom end of the fastener (530).
4. The traction mechanism according to claim 3, characterized in that: The limiting portion (510) is a limiting groove, and the shape of the bottom end of the fastener (530) is adapted to the shape of the groove bottom of the limiting groove.
5. The traction mechanism according to claim 4, characterized in that: The bottom end of the fastener (530) and the bottom of the limiting groove are both flat.
6. The traction mechanism according to claim 2, characterized in that: The number of the limiting portions (510) is at least two, and at least two of the limiting portions (510) are distributed along the outer peripheral surface of the first adjusting member (300) and are located on the same cross section of the first adjusting member (300).
7. The traction mechanism according to claim 1, characterized in that: The rotation angle prompt structure (500) comprises a dial and a reference portion matched with the dial, wherein the dial comprises a plurality of angle indication marks arranged at preset angle intervals along the circumference; wherein: The scale plate is arranged on the outer peripheral surface of one of the first adjusting member (300) and the second adjusting member (400), and the reference portion is arranged on the outer peripheral surface of the other of the first adjusting member (300) and the second adjusting member (400); or, The scale plate is provided on the outer peripheral surface or end surface of one of the first adjusting member (300) and the mounting component (100), and the reference portion is provided on the outer peripheral surface or end surface of the other of the first adjusting member (300) and the mounting component (100).
8. The traction mechanism according to claim 7, characterized in that: The reference portion includes a reference indication line and / or a reference indication protrusion and / or a reference indication groove.
9. The traction mechanism according to any one of claims 1 to 8, characterized in that: It also includes a rotation-stopping structure (600), which is detachably disposed between the first adjusting member (300) and the second adjusting member (400) to limit the position in the circumferential direction.
10. The traction mechanism according to claim 9, characterized in that: The outer circumferential surface of one of the first adjusting member (300) and the second adjusting member (400) is provided with a boss (700) protruding in the radial direction, and the outer circumferential surface of the boss (700) includes a non-rotating abutting surface. The anti-rotation structure (600) includes a connecting member (610), and one end of the connecting member (610) has a cover shell (611) that cooperates with the abutting surface, and the cover shell (611) is used to cover the outside of the abutting surface for circumferential limitation. The other end of the connecting member (610) is detachably connected to the other of the first adjusting member (300) and the second adjusting member (400).
11. The traction mechanism according to claim 10, characterized in that: The boss (700) is in the form of a polygonal column, and the abutment surface includes at least two adjacent side walls of the boss (700).
12. The traction mechanism according to claim 11, characterized in that: When the first adjusting member (300) is rotatably disposed in the cavity of the mounting component (100), and the rotation angle prompt structure (500) includes at least one limiting portion (510) disposed on the outer peripheral surface of the first adjusting member (300) and a through hole (520) disposed on the side wall of the mounting component (100) and corresponding to the limiting portion (510), the mating surface of the cover shell (611) and the side wall of the boss (700) is parallel to a surface of the mounting component (100) on which the through hole (520) is provided.
13. The traction mechanism according to claim 12, characterized in that: When the boss (700) is arranged on the outer peripheral surface of the first adjusting member (300), and the number of the limiting portions (510) is at least two, the outer peripheral surface of the boss (700) is provided with abutment surfaces corresponding to each of the limiting portions (510), so that when the limiting portion (510) rotates to a position corresponding to the through hole (520), the cover shell (611) is covered outside the corresponding abutment surface.
14. The traction mechanism according to claim 10, characterized in that: The anti-rotation structure (600) further comprises a connecting block (620) and a fastening screw (630); an edge of one end of the connecting member (610) away from the cover shell (611) is provided with a mounting groove (612); wherein, The connecting block (620) is arranged on the first adjusting member (300), and threaded holes are arranged on the connecting block (620) and the first adjusting member (300), and the fastening screw (630) is passed through the mounting groove (612) and locked with the threaded hole; or, The connecting block (620) is arranged on the second adjusting member (400), and threaded holes are arranged on the connecting block (620) and the second adjusting member (400), and the fastening screw (630) is passed through the mounting groove (612) and locked with the threaded hole.
15. An endoscope, characterized in that: It comprises the traction mechanism as described in any one of claims 1 to 14.