Locking device and endoscope
By introducing an adjustable positioning groove and a detachable fixing component into the locking device of the endoscope, the problem of mismatched guide tube diameter is solved, enabling convenient installation and replacement of the guide tube and improving operational convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SONOSCAPE MEDICAL CORP
- Filing Date
- 2025-05-20
- Publication Date
- 2026-06-09
Smart Images
Figure CN224330914U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of endoscope technology, and more specifically, to a locking device. Furthermore, this utility model also relates to an endoscope including the aforementioned locking device. Background Technology
[0002] With the development of medical device technology, endoscopes have been widely used in clinical medicine. An endoscope includes an insertion section and an operating section. The insertion section includes an insertion tube assembly, a bending section, and a tip connected in sequence. The operating section is equipped with a handwheel assembly, and a steel wire rope is connected between the handwheel assembly and the bending section. In use, by operating the handwheel assembly, the steel wire rope can be moved, thereby controlling the bending shape of the bending section.
[0003] To guide and protect the wire rope, the endoscope also includes a guide tube, which connects the operating section and the insertion section, through which the wire rope passes. One end of the guide tube is fixed inside the operating section by a locking device, and the other end is fixed to the base end of the bend.
[0004] In practical applications, an endoscope operating section of the same specification may be connected to an insertion section of different specifications, and the guide tubes inserted in the different insertion sections have different diameters. However, in related technologies, the locking device includes a guide frame with a positioning hole that fully matches the guide tube; that is, the outer diameter of the guide tube is the same as the inner diameter of the positioning hole, and there is a one-to-one matching relationship between the guide tube and the positioning hole. Thus, different guide frames need to be designed for guide tubes with different outer diameters. In other words, the guide frames in related technologies cannot meet the compatibility and positioning requirements of guide tubes with different diameters. When it is necessary to replace a guide tube with a different diameter, the guide frame fixed in the operating section also needs to be replaced simultaneously, making the disassembly and assembly operation quite cumbersome.
[0005] Therefore, how to provide a locking device that allows for easy replacement of guide tubes of different diameters is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0006] In view of this, the purpose of this utility model is to provide a locking device that can be compatible with the fixing of guide tubes of different diameters, and facilitates the replacement of guide tubes of different diameters.
[0007] Another objective of this invention is to provide an endoscope that includes the locking device described above, which is compatible with the fixing of guide tubes of different diameters and facilitates the replacement of guide tubes of different diameters.
[0008] To achieve the above objectives, this utility model provides the following technical solution:
[0009] A locking device for locking a guide tube, comprising:
[0010] A guide frame is used to be fixedly installed inside the operating part of the endoscope. The guide frame is provided with a positioning groove, which is configured to limit the guide tubes of different diameters.
[0011] The fastener has a fixing groove. The fastener and the guide frame are detachably connected. After the two are connected, the fixing groove and the positioning groove form a fixing space to fix the guide tube to be locked in the fixing space.
[0012] Optionally, the positioning groove includes a V-groove.
[0013] Optionally, the V-groove is configured to limit the guide tube with a diameter in the range of [D1, D2], wherein when a guide tube with a diameter of D1 is installed in the V-groove, at least a portion of the guide tube with a diameter of D1 protrudes from the opening of the V-groove.
[0014] Optionally, the guide frame is also provided with a machining hole that communicates with the bottom of the V-shaped groove.
[0015] Optionally, the guide frame includes a body and at least two positioning elements, each positioning element having a partial positioning groove, all partial positioning grooves being assembled to form a positioning groove, and the positioning elements being connected to the body via elastic elements to allow the positioning groove to adapt to guide tubes of different diameters.
[0016] Optionally, the guide tube is a spring tube, and the diameter of the fixing groove is smaller than the diameter of the guide tube to be locked, so that after the fixing part is connected to the guide frame, the fixing groove and the guide tube to be locked are interference fit.
[0017] Optionally, the guide frame has at least two spaced positioning grooves on the same side to limit the positioning of at least two guide tubes respectively; the number of fixing members is equal to the number of positioning grooves, and the fixing members are arranged along the extension direction of the positioning grooves; wherein:
[0018] Each fastener includes a fixing groove, and the fixing groove of each fastener corresponds one-to-one with each positioning groove;
[0019] Each fixture also includes a clearance slot;
[0020] After each fastener is connected to the guide frame, one of the positioning slots and the fixing slots form a fixing space, and the remaining positioning slots and the clearance slots form a clearance space. The clearance space is used to make clearance fit with the guide tube passing through it.
[0021] Optionally, the fastener has a protrusion located away from the fixing groove, and the protrusion is used to abut against the guide frame.
[0022] Optionally, the guide frame includes:
[0023] The bottom wall is used for fixed connection with the operating part;
[0024] The first sidewall and the second sidewall are arranged in parallel, and positioning grooves are respectively provided on the outer sides of the first sidewall and the second sidewall that are opposite to each other.
[0025] The third and fourth side walls are arranged in parallel and are perpendicular to the first and second side walls. The top of the third and fourth side walls are respectively provided with through grooves.
[0026] The first sidewall, the second sidewall, the third sidewall, and the fourth sidewall enclose a accommodating space for setting up preset components.
[0027] An endoscope comprising any of the locking devices described above.
[0028] The locking device provided by this utility model has the following beneficial effects:
[0029] The guide frame has positioning grooves that limit the movement of guide tubes of different diameters. During installation, the guide tube of the required diameter is directly placed into the positioning groove, thus positioning the guide tube within the guide frame. Then, the fixing component is connected to the guide frame. After connection, the fixing groove of the fixing component aligns with the positioning groove of the guide frame, and the two together form a fixed space for fixing the guide tube. In other words, after the fixing component is connected to the guide frame, the fixing groove contacts and presses against the guide tube, thereby pressing the guide tube firmly into the positioning groove and fixing it. When disassembly is required, simply detach the fixing component from the guide frame to remove the guide tube from the positioning groove, making the guide tube detachable.
[0030] It is understandable that the positioning groove can limit the positioning of guide tubes of different diameters. That is, the positioning groove does not uniquely correspond to a single diameter guide tube. When the diameter of the guide tube changes, the positioning groove can still achieve the positioning of the guide tube. Therefore, this locking device can meet the installation and positioning requirements of guide tubes of different diameters and is compatible with guide tubes of different diameters. At the same time, the fixing component and the guide frame are detachably connected. When it is necessary to disassemble the guide tube, it is only necessary to remove the fixing component from the guide frame. Moreover, since the guide frame is compatible with guide tubes of different diameters, there is no need to disassemble and reassemble different guide frames for different guide tube outer diameters, simplifying the installation process. Furthermore, compared with the welding method used in related technologies to fix the guide tube, it can reduce the operation steps during assembly and disassembly, making disassembly and assembly convenient and improving the convenience of installation and maintenance.
[0031] The endoscope provided by this utility model includes any of the above-mentioned locking devices and has the same beneficial effects as the above-mentioned locking devices. Attached Figure Description
[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0033] Figure 1 This is a schematic diagram of the endoscope provided in a specific embodiment of the present utility model;
[0034] Figure 2 Exploded view of the locking device and guide tube provided in a specific embodiment of this utility model;
[0035] Figure 3 for Figure 2 A schematic diagram of the structure after assembly and fixing of the guide tube;
[0036] Figure 4 A schematic diagram of the mating structure of a fixing groove, a guide tube, and a positioning groove provided for a specific embodiment of this utility model;
[0037] Figure 5 for Figure 3 Top view of the locking device;
[0038] Figure 6 for Figure 5 Sectional view along line AA;
[0039] Figure 7 for Figure 5 Sectional view along the BB direction;
[0040] Figure 8 for Figure 3 Schematic diagram of the guide frame structure;
[0041] Figure 9 for Figure 3 A schematic diagram of the structure of the fixing component.
[0042] Figure label:
[0043] 1-Guide frame; 11-Positioning groove; 12-Machining hole; 13-Bottom wall; 131-First limiting part; 132-Mounting part; 14-First side wall; 15-Second side wall; 16-Third side wall; 17-Fourth side wall; 18-Pass groove; 2-Fixing component; 21-Fixing groove; 22-Leaning groove; 23-Protrusion; 24-Mounting hole; 3-Guide tube; 4-Fastener; 5-Traction rope;
[0044] 10 - Operation section; 20 - Insertion section; 30 - Light guide section. Detailed Implementation
[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0046] The core of this invention is to provide a locking device that is compatible with the fixing of guide tubes of different diameters, facilitating the replacement of guide tubes of different diameters. Another core aspect of this invention is to provide an endoscope including the aforementioned locking device, which has the same beneficial effects as the locking device described above.
[0047] like Figure 1 As shown, this embodiment of the present invention provides an endoscope, which includes an operating part 10, an insertion part 20, and a light guide part 30. The operating part 10 is provided with a locking device for locking the guide tube 3 (e.g., Figure 2 One end of the guide tube 3 (as shown) is fixed to the base end of the bent portion of the insertion portion 20.
[0048] It is understood that the insertion part 20 includes an insertion tube assembly, a curved part, and a head end connected in sequence. The end of the insertion tube assembly away from the curved part is connected to the operation part 10. The operation part 10 is provided with a handwheel assembly, which includes up and down knobs, left and right knobs, and various other function buttons. A traction rope 5 is connected between the handwheel assembly and the front end of the curved part. Figure 3 As shown, in use, the handwheel assembly can be operated to move the traction rope 5, thereby controlling the bending shape of the curved section. To guide and protect the traction rope 5, a guide tube 3, such as a spring tube, is provided on the outer periphery of the traction rope 5. One end of the guide tube 3 is fixed inside the operating part 10 by a locking device, and the other end of the guide tube 3 is fixed to the base end side of the curved section (or the front end side of the insertion tube assembly). The focus of this utility model is on improving the structure of the locking device; various embodiments of the locking device will be described in detail below.
[0049] Please refer to Figure 2 and Figure 3 This utility model provides a locking device for locking a guide tube 3. The locking device includes a guide frame 1 and a fixing member 2. The guide frame 1 is fixedly installed in the operating part 10 of the endoscope. The guide frame 1 is provided with a positioning groove 11, which is configured to limit the guide tubes 3 of different diameters. The fixing member 2 is provided with a fixing groove 21. The fixing member 2 is detachably connected to the guide frame 1. After the two are connected, the positioning groove 11 and the fixing groove 21 form a fixing space to fix the guide tube 3 to be locked in the fixing space.
[0050] The key feature of this utility model embodiment is that the guide frame 1 and the fixing member 2 are used to realize the detachable connection between the guide tube 3 and the operating part 10, and the guide frame 1 fixedly installed in the operating part 10 can be used for guide tubes 3 of different diameters. When it is necessary to install or replace guide tubes 3 of different diameters, the installation or replacement of guide tubes 3 of different diameters can be realized without disassembling and replacing the guide frame 1, which simplifies the installation operation steps. Specifically, this embodiment of the invention limits the guide tubes 3 of different diameters by opening a positioning groove 11 on the guide frame 1. During installation, the guide tube 3 of the required diameter is directly placed into the positioning groove 11 to achieve positioning of the guide tube 3 on the guide frame 1. Then, the fixing member 2 is connected to the guide frame 1. After the fixing member 2 is connected to the guide frame 1, the fixing groove 21 of the fixing member 2 is aligned with the positioning groove 11 of the guide frame 1, and the two form a fixing space for fixing the guide tube 3. That is, after the fixing member 2 is connected to the guide frame 1, the fixing groove 21 contacts and squeezes the guide tube 3, thereby pressing the guide tube 3 tightly into the positioning groove 11, thus fixing the guide tube 3. When disassembly is required, the fixing member 2 is simply disassembled from the guide frame 1, and the guide tube 3 can be taken out from the positioning groove 11, thus making the guide tube 3 detachable.
[0051] It is understandable that the positioning groove 11 can limit the guide tubes 3 of different diameters. That is, the positioning groove 11 does not uniquely correspond to a single diameter of the guide tube 3. When the diameter of the guide tube 3 changes, the positioning groove 11 can still achieve the positioning of the guide tube 3. Therefore, this locking device can meet the installation and positioning requirements of guide tubes 3 of different diameters and is compatible with guide tubes 3 of different diameters. At the same time, the fixing member 2 is detachably connected to the guide frame 1. Therefore, when it is necessary to disassemble the guide tube 3, it is only necessary to remove the fixing member 2 from the guide frame 1. Moreover, since the guide frame 1 is compatible with guide tubes 3 of different diameters, it is not necessary to disassemble and reassemble different guide frames 1 for the outer diameter of the guide tube 3, which simplifies the installation operation steps. In addition, compared with the welding method used in related technologies to fix the guide tube 3, it can reduce the operation steps during assembly and disassembly, making disassembly and assembly convenient and improving the convenience of installation and maintenance.
[0052] It should be noted that the specific shape of the positioning groove 11 is not limited in this embodiment, as long as it can limit the guide tubes 3 of different diameters.
[0053] For example, such as Figure 2As shown, the positioning groove 11 may include a V-shaped groove. It can be understood that the V-shaped groove can limit the guide tubes 3 of different diameters. When guide tubes 3 of different diameters are placed in the V-shaped groove, the guide tubes 3 of different diameters contact different parts of the V-shaped groove. At this time, as long as the fixing member 2 is fixedly connected to the guide frame 1, the guide tube 3 can be squeezed and fixed in the fixed space formed by the fixing groove 21 and the positioning groove 11 by the fixing groove 21.
[0054] Furthermore, in order to facilitate the fixing of the guide tube 3 and improve the fixing strength, the V-groove is configured to limit the guide tube 3 with a diameter in the range of [D1, D2], wherein when the guide tube 3 with a diameter of D1 is installed in the V-groove, at least a portion of the guide tube 3 with a diameter of D1 protrudes from the opening of the V-groove.
[0055] In other words, when the guide tube 3 with the smallest diameter that is adapted to the V-groove is installed in the V-groove, at least part of the guide tube 3 protrudes from the opening of the V-groove. This ensures that the guide tube 3 with the appropriate diameter can protrude from the opening of the V-groove at least partially after being placed in the V-groove, so as to abut against the fixing groove 21. This facilitates the fixing groove 21 to apply pressure to the guide tube 3 and improve the fixing strength.
[0056] It should be noted that this embodiment does not limit the specific structural dimensions of the V-groove, as long as the V-groove can be adapted to the diameter of all the guide tubes 3 it is compatible with. Specifically, the opening size and depth of the V-groove can be determined according to the diameter range of the guide tubes 3 that need to be compatible. Please refer to [reference needed]. Figure 4 The angle α of the V-groove is related to the size of the V-groove opening, and the height h of the V-groove is its depth. A larger angle α means a larger opening, resulting in the guide tube 3 protruding closer to the bottom of the V-groove after placement. This reduces the height h1 of the guide tube 3 protruding from the opening end face of the V-groove. Conversely, a larger height h results in a smaller height h1. To ensure the guide tube 3 protrudes beyond the opening end face of the V-groove, h1 must be greater than 0. Therefore, in practical applications, the angle α and height h of the V-groove only need to be determined based on the minimum diameter of the required compatible guide tube 3.
[0057] Furthermore, for easier processing of V-grooves, please refer to... Figure 6 , Figure 7 and Figure 8In some embodiments, the guide frame 1 is also provided with a machining hole 12 that communicates with the bottom of the V-shaped groove. That is, the bottom of the V-shaped groove is not closed at the tip, but communicates with the machining hole 12. In this way, when the V-shaped groove needs to be machined, there is no need to use a custom tool; a general-purpose milling cutter can be used to complete the machining, thereby reducing the machining difficulty and cost.
[0058] It should be noted that the specific shape of the machining hole 12 is not limited in this embodiment. As long as the machining hole 12 can easily accommodate the cutting tool to achieve the machining of the V-groove of the required size, it is acceptable. In some embodiments, the machining hole 12 is a U-shaped hole. That is, the bottom of the V-groove is connected to the opening of the U-shaped hole.
[0059] Of course, in other embodiments, the positioning groove 11 can also be implemented as follows: the guide frame 1 includes a body and at least two positioning members, each positioning member is provided with a partial positioning groove, all the partial positioning grooves are assembled to form the positioning groove 11, and the positioning member is connected to the body through an elastic member so that the positioning groove 11 can adapt to guide tubes 3 of different diameters.
[0060] In other words, the positioning groove 11 in this embodiment is a split positioning groove 11, which is formed by the splicing of at least two positioning grooves. Each positioning groove is retractable, so that the overall size of the positioning groove 11 is variable. That is, when the guide tube 3 is placed into the positioning groove 11 and the fixing member 2 is connected to the guide frame 1, the fixing groove 21 squeezes the guide tube 3, so that the guide tube 3 squeezes the positioning groove, causing the elastic member to deform and the overall size of the positioning groove 11 to increase, so that the positioning groove 11 can position the guide tube 3. At this time, the elastic member generates an elastic force on the positioning groove 11. Through the combined action of the elastic force and the squeezing force of the fixing groove 21, the position of the guide tube 3 is kept fixed. It should be noted that in the initial state, the overall size of the positioning groove 11 is smaller than the minimum diameter of the guide tube 3. Thus, when the guide tube 3 with the minimum diameter is placed into the positioning groove 11, the fixing member 2 is connected to the guide frame 1, and the fixing groove 21 squeezes the guide tube 3. At this time, the guide tube 3 can squeeze part of the positioning groove, thereby generating elastic force in the elastic member. This is beneficial to use the elastic force and the squeezing force of the fixing groove 21 to fix the guide tube 3.
[0061] In addition, it should be noted that the specific shape of the fixing groove 21 is not limited in the above embodiments. As long as the fixing groove 21 has a point of contact with the guide tube 3 and can apply extrusion force to the guide tube 3, the fixing groove 21 can be an arc groove, a rectangular groove or a V-shaped groove, etc.
[0062] It is understandable that, in order to facilitate the fixing of guide tubes 3 of different diameters, the fixing groove 21 needs to be constructed to have at least one contact point with each guide tube 3 of different diameters. Considering the convenience of structural implementation, for example, the size of a single fixing groove 21 matches the diameter of a single guide tube 3. That is, guide tubes 3 of different diameters need to be matched with fixing grooves 21 of different sizes, that is, the corresponding fixing grooves 21 are different for guide tubes 3 of different diameters. By pressing and fixing the guide tube 3 in the positioning groove 11 with the fixing groove 21 that matches the size of the guide tube 3, it can be ensured that the guide tube 3 is interference-fitted with the fixing groove 21 and the positioning groove 11, thereby locking the guide tube 3. Furthermore, the fixing member 2 is a movable part relative to the operating part 10. When installing or replacing the guide tube 3 of the required diameter, it is only necessary to select the fixing member 2 with the fixing groove 21 that matches the size of the guide tube 3 and connect it to the guide frame 1, so that the impact on the replacement operation of the guide tube 3 is small.
[0063] It should be noted that the size of the single fixing groove 21 here matches the diameter of the single guide tube 3, but the shape of the fixing groove 21 is not limited to match the shape of the guide tube 3. For example, the guide tube 3 can be a circular tube, and the fixing groove 21 can be a rectangular groove or a V-shaped groove, as long as the structural dimensions of the fixing groove 21 can ensure that there is at least one point in contact with the guide tube 3 of the corresponding diameter.
[0064] Please refer to Figure 9 In some embodiments, the shape of the fixing groove 21 is semi-circular, that is, the shape of the fixing groove 21 is consistent with the shape of the guide tube 3. In this case, the entire groove wall of the fixing groove 21 is in contact with the guide tube 3, which helps to improve the reliability of the fixing groove 21 in constraining and fixing the guide tube 3.
[0065] To ensure the reliability of the fixing groove 21 in fixing the guide tube 3, in some embodiments, the guide tube 3 is a spring tube, and the diameter of the fixing groove 21 is smaller than the diameter of the guide tube 3 to be locked, so that after the fixing member 2 is connected to the guide frame 1, the fixing groove 21 and the guide tube 3 to be locked have an interference fit. That is to say, in this embodiment, the diameter of the fixing groove 21 needs to be smaller than the diameter of the corresponding guide tube 3, that is, the fixing groove 21 and the guide tube 3 have a tight fit. This ensures that the axis of the fixing groove 21 coincides with the axis of the guide tube 3, avoiding insufficient clamping force.
[0066] In addition, it should be noted that the above embodiments do not limit the number of fixing slots 21 provided for a single fastener 2.
[0067] Please refer to Figure 9In some embodiments, the fastener 2 is provided with a fixing groove 21 so that each fastener 2 corresponds to a guide tube 3 of a certain diameter. That is, a single fastener 2 can only be fitted with a guide tube 3 of a certain diameter. When the diameter of the guide tube 3 is different, different fasteners 2 are required.
[0068] In other embodiments, the fixing member 2 is provided with at least two fixing grooves 21 of different sizes, so that each fixing member 2 corresponds to two or more guide tubes 3 of different diameters. That is, in this embodiment, a single fixing member 2 is provided with two or more fixing grooves 21, and each fixing groove 21 has a different size, so that different fixing grooves 21 can match guide tubes 3 of different diameters. It can be understood that in use, a fixing groove 21 that matches the size of the guide tube 3 is selected and aligned with the positioning groove 11 to form a fixed space. That is, when fixing the fixing member 2 to the guide frame 1, the fixing groove 21 that matches the current size of the guide tube 3 is aligned with the positioning groove 11 to fix the fixing member 2 to the guide frame 1. When the diameter of the guide tube 3 changes, the orientation of the fixing member 2 is changed so that the fixing groove 21 of different required sizes is aligned with the positioning groove 11. In this way, the fixing member 2 can also meet the compatibility of guide tubes 3 of different diameters.
[0069] It should be noted that the above embodiments do not limit the specific connection method between the fixing member 2 and the guide frame 1, as long as a detachable connection between the two can be achieved. For example, Figure 2 and Figure 3 As shown, in some embodiments, the fastener 2 and the guide frame 1 are connected by fastener 4, or the fastener 2 and the guide frame 1 are fixed by a snap-fit structure.
[0070] In addition, in order to enable the guide frame 1 to fix multiple guide tubes 3 at the same time, multiple positioning slots 11 can be set on the guide frame 1.
[0071] For example, please combine Figures 5 to 9In some embodiments, at least two spaced positioning grooves 11 are provided on the same side of the guide frame 1 to limit the positioning of at least two guide tubes 3 respectively; the number of fixing members 2 is equal to the number of positioning grooves 11, and each fixing member 2 is arranged along the extension direction of the positioning groove 11 (it can be arranged side by side or spaced apart), each fixing member 2 includes a fixing groove 21, and the fixing groove 21 of each fixing member 2 corresponds one-to-one with each positioning groove 11; each fixing member 2 is also provided with a clearance groove 22, after each fixing member 2 is connected to the guide frame 1, one of the positioning grooves 11 and the fixing groove 21 form a fixing space, and the remaining positioning grooves 11 and the clearance groove 22 form a clearance space, which is used to cooperate with the guide tube 3 passing through it with clearance. In other words, when a single fixing member 2 is fixed to the guide frame 1, only one fixing groove 21 and the corresponding positioning groove 11 form a fixing space to fix the guide tube 3 that matches the size of the fixing groove 21; the clearance groove 22 and the remaining positioning grooves 11 form a clearance space, which is only for the guide tube 3 to pass through and does not fix the guide tube 3. In this way, by fixing the various fixing members 2 at different axial positions of the positioning groove 11, the guide tubes 3 installed in different positioning grooves 11 can be fixed at different axial positions of the positioning groove 11. That is, one fixing member 2 can fix and lock one guide tube 3, so that each guide tube 3 can be installed, adjusted and disassembled independently. Moreover, this structure is relatively compact and easy to assemble and disassemble.
[0072] For example, the number of clearance grooves 22 can be one or more. One clearance groove 22 can correspond to one or more positioning grooves 11, as long as the clearance space formed by it and the corresponding positioning groove 11 can be clearance-fitted with the guide tube 3 positioned in the corresponding positioning groove 11.
[0073] For example, the number of clearance grooves 22 in each fastener 2 can be one less than the number of positioning grooves 11. Each clearance groove 22 can correspond one-to-one with other positioning grooves 11 except for the positioning groove 11 corresponding to the fixing groove 21, and form a clearance space. In this way, it is beneficial to improve the coaxiality of each guide tube 3 and ensure the uniformity of the structure of each fastener 2. Moreover, it is convenient to rationally design the structure of the fastener 2, ensuring that the fastener 2 is easy to install and does not interfere with the guide tube 3.
[0074] For example, in order to improve the compatibility of the clearance groove 22 in the fastener 2, after the fastener 2 is connected to the guide frame 1, the size of the clearance space formed by the clearance groove 22 and its corresponding positioning groove 11 is larger than the size of the largest guide tube 3 that the positioning groove 11 can accommodate. Specifically, the diameter of the clearance groove 22 can be larger than the diameter of the largest guide tube 3 that the positioning groove 11 can accommodate.
[0075] It should be noted that this embodiment does not limit the specific number of positioning grooves 11 and clearance grooves 22, as long as the above settings can be met.
[0076] like Figure 8 and Figure 9 As shown, in some embodiments, the guide frame 1 has two spaced positioning grooves 11 on the same side, and the fixing member 2 has a fixing groove 21 and a clearance groove 22. The fixing groove 21 is aligned with one of the positioning grooves 11 to form a fixing space to fix the corresponding guide tube 3. The clearance groove 22 is aligned with the other positioning groove 11 to form a clearance space so that the guide tube 3 corresponding to the clearance groove 22 can pass through instead of being fixed. In this way, the two guide tubes 3 on the same side of the guide frame 1 can be fixed by the two fixing members 2 respectively.
[0077] Among them, the guide tubes 3 inserted into the insertion part 20 of the same specification are generally of the same size, therefore, in Figure 8 or Figure 9 In the illustrated scheme, two fasteners 2 of the same specification can be used to fix the two guide tubes 3 on the same side of the guide frame 1. During installation, it is only necessary to interchange the alignment positions of the fixing groove 21 and the clearance groove 22 in the fastener 2. This improves the reusability of the fastener 2 and reduces the mold opening cost.
[0078] Furthermore, such as Figure 9 As shown, in some embodiments, the fastener 2 is provided with a mounting hole 24 for the fastener 4 to pass through, and a fixing groove 21 and a clearance groove 22 are respectively provided on both sides of the mounting hole 24. This structural layout can make the strength of the fastener 2 more uniform, which is beneficial to improving the reliability and service life of the fastener 2.
[0079] Additionally, it is understandable that when the fixing member 2 and the guide frame 1 are locked, the fixing groove 21 applies a compressive force to the guide tube 3. Simultaneously, the fixing groove 21 also experiences a counterforce from the guide tube 3. However, the clearance groove 22 is not in contact with the corresponding guide tube 3 and does not experience a counterforce. Therefore, the fixing member 2 experiences a counterforce at the fixing groove 21, posing a risk of it flipping over. This is especially true when the fixing groove 21 is close to one end of the fixing member 2. When the fixing member 2 is locked to the guide frame 1, it is easy for the fixing member 2 to tilt towards the end furthest from the fixing groove 21. To resolve this technical problem, please refer to [further details]. Figure 9In some embodiments, the fixing member 2 has a protrusion 23 located away from the fixing groove 21. The protrusion 23 is used to abut against the guide frame 1. That is, when the fixing member 2 is locked to the guide frame 1, the protrusion 23 is in close contact with the guide frame 1. When the fixing groove 21 is subjected to a reaction force due to the compression of the guide tube 3, causing the fixing member 2 to have a tendency to flip, the protrusion 23 abuts against the guide frame 1, thus resisting the flipping of the fixing member 2, thereby ensuring the stability of the position of the fixing member 2 and preventing the fixing member 2 from flipping.
[0080] like Figure 9 As shown, in some embodiments, the fastener 2 is provided with a fixing groove 21 and a relief groove 22, and the fixing groove 21 and the relief groove 22 are symmetrically arranged about the center line of the fastener 2. The fastener 2 is provided with the aforementioned protrusion 23 on the side of the fastener 2 where the fixing groove 21 and the relief groove 22 are located, near the end of the relief groove 22.
[0081] In addition, to facilitate the connection between the guide frame 1 and the operating unit and to avoid interference between the guide frame 1 and other components, such as Figure 8 As shown, in some embodiments, the guide frame 1 includes a bottom wall 13, a first side wall 14, a second side wall 15, a third side wall 16, and a fourth side wall 17. The bottom wall 13 is used for fixed connection with the operating part. Exemplarily, the bottom wall 13 includes a first limiting part 131 and a mounting part 132. The first limiting part 131 is used to cooperate with the second limiting part of the operating part for limiting, and the mounting part 132 is used for fixed connection with the operating part. The first side wall 14 and the second side wall 15 are arranged in parallel, and positioning grooves 11 are respectively provided on their opposite outer sides. The third side wall 16 and the fourth side wall 17 are arranged in parallel and perpendicular to the first side wall 14 and the second side wall 15. The top of the third side wall 16 and the fourth side wall 17 are respectively provided with through grooves 18. The first side wall 14, the second side wall 15, the third side wall 16, and the fourth side wall 17 enclose a receiving space for setting preset components.
[0082] In other words, the guide frame 1 is provided with a first limiting part 131, and the operating part is provided with a second limiting part. During installation, the guide frame 1 and the operating part are quickly installed and positioned by the cooperation of the first limiting part 131 and the second limiting part. Furthermore, the guide frame 1 and the operating part are fixedly connected by the mounting part 132. In addition, the first side wall 14, the second side wall 15, the third side wall 16 and the fourth side wall 17 form an accommodating space. That is, the middle part of the guide frame 1 is a hollow structure so that other preset components can be set in the hollow structure (i.e., the accommodating space). At the same time, the top of the third side wall 16 and the fourth side wall 17 are respectively provided with through grooves 18 for other components to pass through, so as to avoid interfering with the installation of other components.
[0083] It should also be noted that, in this specification, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.
[0084] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0085] The locking device and endoscope provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.
Claims
1. A locking device for locking a guide tube (3), characterized in that, include: A guide frame (1) is used to be fixedly installed in the operating part (10) of the endoscope. The guide frame (1) is provided with a positioning groove (11), which is configured to limit the guide tubes (3) of different diameters. The fixing component (2) is provided with a fixing groove (21). The fixing component (2) is detachably connected to the guide frame (1). After the two are connected, the fixing groove (21) and the positioning groove (11) form a fixing space to fix the guide tube (3) to be locked in the fixing space.
2. The locking device according to claim 1, characterized in that, The positioning groove (11) includes a V-shaped groove.
3. The locking device according to claim 2, characterized in that, The V-groove is configured to limit the guide tube (3) with a diameter in the range of [D1, D2], wherein when the guide tube (3) with a diameter of D1 is installed in the V-groove, at least a portion of the guide tube (3) with a diameter of D1 protrudes from the opening of the V-groove.
4. The locking device according to claim 2, characterized in that, The guide frame (1) is also provided with a machining hole (12) that communicates with the bottom of the V-shaped groove.
5. The locking device according to claim 1, characterized in that, The guide frame (1) includes a body and at least two positioning members. Each positioning member is provided with a partial positioning groove. All the partial positioning grooves are assembled to form the positioning groove (11). The positioning member is connected to the body through an elastic member so that the positioning groove (11) can adapt to guide tubes (3) of different diameters.
6. The locking device according to claim 1, characterized in that, The guide tube (3) is a spring tube, and the diameter of the fixing groove (21) is smaller than the diameter of the guide tube (3) to be locked, so that after the fixing member (2) is connected to the guide frame (1), the fixing groove (21) and the guide tube (3) to be locked are interference fit.
7. The locking device according to any one of claims 1-6, characterized in that, The guide frame (1) has at least two spaced positioning grooves (11) on the same side to limit the positioning of at least two guide tubes (3) respectively; the number of fixing members (2) is equal to the number of positioning grooves (11), and each fixing member (2) is arranged along the extension direction of the positioning groove (11); wherein: Each of the fasteners (2) includes a fixing groove (21), and the fixing groove (21) of each of the fasteners (2) corresponds one-to-one with each of the positioning grooves (11); Each of the fasteners (2) also includes a relief groove (22); After each of the fixing members (2) is connected to the guide frame (1), one of the positioning grooves (11) and the fixing groove (21) form the fixing space, and the remaining positioning grooves (11) and the clearance grooves (22) form the clearance space, which is used to cooperate with the guide tube (3) passing through it.
8. The locking device according to claim 7, characterized in that, The fastener (2) has a protrusion (23) at a position away from the fixing groove (21), and the protrusion (23) is used to abut against the guide frame (1).
9. The locking device according to any one of claims 1-6, characterized in that, The guide frame (1) includes: The bottom wall (13) is used for fixed connection with the operating part (10); The first sidewall (14) and the second sidewall (15) are arranged in parallel, and the positioning groove (11) is provided on the outer side of the first sidewall (14) and the second sidewall (15) that are opposite to each other. The third sidewall (16) and the fourth sidewall (17) are arranged in parallel and are perpendicular to the first sidewall (14) and the second sidewall (15). The top of the third sidewall (16) and the fourth sidewall (17) are respectively provided with through grooves (18). The first sidewall (14), the second sidewall (15), the third sidewall (16) and the fourth sidewall (17) form an accommodating space for setting up preset components.
10. An endoscope, characterized in that, Includes the locking device as described in any one of claims 1-9.