Inspection tool and method for endoscope snake bone

Abstract

The invention provides an inspection tool and method for an endoscope snake bone, and relates to the technical field of tool testing, the inspection tool comprises a snake bone inspection workbench and a snake bone fixing seat, the snake bone inspection workbench comprises a snake bone angle testing plate, a testing plate holding seat and a base, and the snake bone angle testing plate is provided with testing scale marks and a snake bone inspection guide rail; the snake bone fixing seat comprises a snake bone profiling fixing table, the snake bone profiling fixing table is in sliding connection with the snake bone inspection guide rail through a sliding table structure, and a clamping mechanism is arranged on the snake bone profiling fixing table. The testing method comprises the following steps: installing a snake bone to be tested in the clamping mechanism; a preset weight block is hung on the driving steel wire rope; sliding the snake bone fixing seat to enable the bent part of the snake bone to correspond to the test scale marks; reading an angle value and comparing the angle value with a theoretical value to judge whether the angle value is qualified. According to the invention, pure mechanical structure design is adopted, the bending angle and the bending strength of the snake bone can be detected at the same time, the structure is simple, and the cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of tool testing, and in particular to a tool and method for testing an endoscope snake bone. Background Art

[0002] Endoscopes are widely used in medical diagnosis and treatment, and the snake bone is the core component of the endoscope. Existing snake bones are usually assembled by multiple rings through manual riveting, and the angle is controlled by wire rope drive. The angle and bending strength of the snake bone will directly affect the operability of the endoscope product, so the quality inspection of the snake bone is particularly important.

[0003] At present, the snake bone detection tooling in the prior art is mainly used for life testing. For example, the Chinese patent application with application number CN115144281A discloses a testing device and method for the bending fatigue of endoscope snake bones. This type of tooling generally includes more than a dozen parts such as drive motors and sensors. Its structure is relatively complex and the manufacturing cost is high. In addition, since the snake bones are assembled by manual riveting, there is inevitably an inherent problem of poor consistency of micro multi-point riveting, which leads to differences in the bending strength and angle of the snake bones. Summary of the invention

[0004] The purpose of the present invention is to provide an inspection tool and method for an endoscope snake bone, which can accurately inspect the snake bone angle and bending strength with high cost performance to meet the actual needs of snake bone research and development, testing and endoscope manufacturing.

[0005] To achieve the above object, the present invention is implemented through the following technical solutions:

[0006] An inspection tool for endoscope snake bones, comprising:

[0007] A snake bone inspection workbench, the snake bone inspection workbench comprising a snake bone angle test plate, a test plate holder and a base, the snake bone angle test plate is provided with a test scale line and a snake bone inspection guide rail;

[0008] The snake bone fixing seat comprises a snake bone profiling fixing platform, the snake bone profiling fixing platform is slidably connected with the snake bone inspection guide rail through a sliding platform structure, and the snake bone profiling fixing platform is provided with a clamping mechanism for fixing the snake bone.

[0009] Further: the clamping mechanism comprises:

[0010] A fixed clamp, fixedly arranged on the snake bone profiling fixing platform;

[0011] A movable clamp, slidably arranged on the snake bone profiling fixing platform;

[0012] The elastic member has one end connected to the movable clamp and the other end fixed on the snake-bone profiling fixing platform. The elastic force of the elastic member provides power for the movable clamp to move toward the fixed clamp.

[0013] Further: the snake bone profiling fixing platform is also provided with:

[0014] A snake bone pre-fixation platform, located between the fixed clamp and the movable clamp;

[0015] The wire rope passing hole is used for passing the driving wire rope of the snake bone.

[0016] Furthermore, the serpentine fixing seat also includes an adjusting screw, and the serpentine contour fixing platform is locked at a specified position of the serpentine inspection guide rail through the adjusting screw.

[0017] Furthermore: the angle test range of the test scale lines on the snake bone angle test plate is 90° to 360°.

[0018] Furthermore: the test board holder and the base are fixedly connected by fastening screws.

[0019] The present invention also provides an inspection method for endoscopic snake bones, using the above-mentioned inspection tool, comprising the following steps:

[0020] S1: Install the snake bone to be tested in the clamping mechanism of the snake bone fixing seat;

[0021] S2: Hanging a weight block corresponding to the optimal bending strength of the snake bone on the driving wire rope of the snake bone to be tested;

[0022] S3: Sliding the serpentine bone fixing seat on which the serpentine bone to be tested is installed along the serpentine bone inspection guide rail until the bending portion of the serpentine bone to be tested corresponds to the test scale line on the serpentine bone angle testing plate;

[0023] S4: reading the angle value corresponding to the bending part of the snake bone to be tested, and comparing it with the preset theoretical bending angle to determine whether the snake bone to be tested is qualified.

[0024] Further: in step S2, the weight m of the weight block and the optimal bending strength f of the snake bone satisfy the relationship:

[0025] f=mg

[0026] Where g is the acceleration due to gravity.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. This device sets an angle test plate on the snake bone inspection workbench and slides with the contoured fixed platform of the snake bone fixing seat, so that the inspection tool can simultaneously detect the bending angle and bending force of the snake bone. Among them, the scale line on the angle test plate is used to directly read the bending angle of the snake bone, and the suspended weight block is used to apply the standard bending force, thereby ensuring the detection accuracy while greatly simplifying the structure of the inspection tool.

[0029] Second, by setting a clamping mechanism consisting of a fixed clamp, a movable clamp and an elastic member on the snake bone profiling fixing table, in conjunction with the setting of the pre-fixing table, the snake bone to be tested can be firmly fixed, and through the pressing force of the elastic member, the stress state of the snake bone during detection is consistent with its actual working state in the endoscope, thereby improving the reliability of the detection result.

[0030] 3. The present invention adopts a purely mechanical structure design, without the need for drive motors, sensors and other electronic components, which not only reduces the manufacturing and maintenance costs, but also improves the reliability of the inspection tooling. At the same time, because the inspection method is simple and intuitive, it greatly reduces the difficulty of use and learning cost of operators, so that the inspection tooling can be widely used in snake bone research and development, testing and endoscope manufacturing and other fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a diagram of the structure of a common snake bone;

[0032] Figure 2 The overall structure diagram of the inspection tool for endoscope snake bones is shown;

[0033] Figure 3 It is a side view structural diagram of the snake bone inspection workbench;

[0034] Figure 4 This is a schematic diagram of the structure of the snake bone angle test board;

[0035] Figure 5 A is a schematic diagram of the structure of the snake bone fixing seat;

[0036] Figure 6 b is a structural schematic diagram of the snake bone fixing seat;

[0037] Figure 7 c is a structural schematic diagram of the snake bone fixing seat;

[0038] Figure 8 It is a functional schematic diagram of the snake bone fixing seat;

[0039] Fig. 9 The figure is a schematic diagram of the assembly relationship between the snake bone fixing seat and the snake bone inspection workbench;

[0040] Fig.10A schematic diagram of the snake bone to be tested being installed in the clamping mechanism of the snake bone fixing seat;

[0041] Fig.11 This is a schematic diagram of the snake bone bending angle test;

[0042] In the figure:

[0043] 1. Snake bone inspection workbench; 11. Snake bone angle test plate; 11a. Graduation mark; 11b. Snake bone inspection guide rail; 11c. Scale line; 12. Test plate holding seat; 13. Base; 14. Fastening screw; 2. Snake bone fixing seat; 21. Snake bone profiling fixing table; 21a. Fixed clamp; 21b; Snake bone pre-fixing table; 21c. Active clamp guide groove; 21d. Active clamp mounting seat; 21e. Wire rope passing hole; 21f. Screw mounting seat; 21g. Mounting hole; 22. Active clamp; 23. Spring; 24. Adjusting screw; 3. Snake bone; 4. Weight block. DETAILED DESCRIPTION

[0044] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0046] like Figure 1 The figure shows the structure of a common snake bone 3. The snake bone 3 is the core component of the endoscope product. The common snake bone 3 is assembled by multiple nodes through manual riveting, and the angle is controlled by wire rope drive. Due to the use of manual riveting, there is inevitably a problem of poor consistency of micro multi-point riveting, resulting in differences in the bending strength and angle of the snake bone 3.

[0047] like Figure 2 The figure shows the overall structure of the inspection tool for endoscope snake bone provided by the present invention. The inspection tool comprises two main parts: snake bone inspection workbench 1 and snake bone fixing seat 2.

[0048] like Figure 3 The figure shows a schematic diagram of the side view of the snake bone inspection workbench 1. The snake bone inspection workbench 1 includes a snake bone angle test plate 11, a test plate holder 12 and a base 13. The test plate holder 12 is fixedly connected to the base 13 by a fastening screw 14. Figure 4 As shown, the snake bone angle test plate 11 is provided with scale lines 11c and 90° graduation marks 11a, and the test range is 90° to 360°, covering the test range of common snake bones. The snake bone angle test plate 11 is also provided with a snake bone inspection guide rail 11b, which is used to cooperate with the snake bone fixing seat 2 to achieve sliding positioning.

[0049] like Figure 5-Figure 7 The structure diagram of the snake bone fixing seat 2 is shown. The snake bone fixing seat 2 includes a snake bone profiling fixing platform 21, a movable clamp 22, a spring 23 and an adjusting screw 24. Among them, the snake bone profiling fixing platform 21 is made according to the shape of the snake bone to be tested, and is provided with a fixed clamp 21a, a snake bone pre-fixing platform 21b, a movable clamp 22 guide groove 21c, a movable clamp 22 mounting seat 21d, a wire rope through hole 21e and a slide structure. The fixed clamp 21a and the movable clamp 22 cooperate to form a clamping mechanism, and the movable clamp 22 can slide in the guide groove. One end of the spring 23 is connected to the movable clamp 22, and the clamping force applied by the spring 23 enables the movable clamp 22 to firmly clamp the snake bone. The slide structure includes a screw mounting seat 21f and a mounting hole 21g opened in the screw mounting seat 21f to achieve the matching installation with the adjusting screw 24. The slide structure is slidably matched with the snake-bone inspection guide rail 11b, and the snake-bone fixing seat 2 can be locked at a specified position of the guide rail by adjusting the screw 24.

[0050] like Figure 8 The figure shows the function diagram of the snake bone fixing seat 2. Through the cooperation of the fixed clamp 21a, the movable clamp 22 and the pre-fixing platform, the snake bone 3 to be tested can be firmly fixed on the snake bone profiling fixing platform 21. Among them, the wire rope through hole 21e is used for the driving wire rope of the snake bone 3 to pass through, so as to facilitate the subsequent hanging of the weight block 4.

[0051] like Fig. 9 The figure shows the assembly relationship between the snake bone fixing seat 2 and the snake bone inspection workbench 1. The snake bone fixing seat 2 cooperates with the guide rail on the snake bone angle test plate 11 through the slide structure, and can slide along the guide rail and lock the position through the adjustment screw 24.

[0052] The present invention also provides a method for testing endoscopic snake bones. Fig.10 As shown, firstly, the snake bone 3 to be tested is installed in the clamping mechanism of the snake bone fixing seat 2, and a weight block 4 is hung on its driving wire rope. The weight of the weight block 4 is pre-calibrated and determined according to the optimal bending strength of the snake bone to be tested.

[0053] like Fig.11 As shown, the fixed seat with the snake bone 3 installed is assembled into the guide rail of the inspection workbench, and the bending part of the snake bone 3 is made to correspond to the test scale line 11c on the angle test plate by sliding the snake bone fixed seat 2. By reading the angle value corresponding to the bending part of the snake bone 3 and comparing it with the preset theoretical bending angle, it can be judged whether the snake bone 3 to be tested is qualified.

[0054] The above inspection tool and method can not only inspect the bending angle and bending strength of the snake bone 3 at the same time, but also truly restore the stress state of the snake bone 3 in the endoscope through the profiling fixation method, thereby ensuring the reliability of the inspection result. At the same time, due to the use of a purely mechanical structure design, the inspection tool has the advantages of simple structure, low cost, and convenient operation.

[0055] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An inspection tool for endoscope snake bones, characterized in that: include: A snake bone inspection workbench, the snake bone inspection workbench comprising a snake bone angle test plate, a test plate holder and a base, the snake bone angle test plate is provided with a test scale line and a snake bone inspection guide rail; The snake bone fixing seat comprises a snake bone profiling fixing platform, the snake bone profiling fixing platform is slidably connected with the snake bone inspection guide rail through a sliding platform structure, and the snake bone profiling fixing platform is provided with a clamping mechanism for fixing the snake bone.

2. The inspection tool for endoscope snake bones according to claim 1, characterized in that: The clamping mechanism comprises: A fixed clamp, fixedly arranged on the snake bone profiling fixing platform; A movable clamp, slidably arranged on the snake bone profiling fixing platform; The elastic member has one end connected to the movable clamp and the other end fixed on the snake-bone profiling fixing platform. The elastic force of the elastic member provides power for the movable clamp to move toward the fixed clamp.

3. The inspection tool for endoscope snake bones according to claim 2, characterized in that: The snake bone profiling fixing platform is also provided with: A snake bone pre-fixation platform, located between the fixed clamp and the movable clamp; The wire rope passing hole is used for passing the driving wire rope of the snake bone.

4. The inspection tool for endoscope snake bones according to claim 1, characterized in that: The serpentine fixing seat also includes an adjusting screw, and the serpentine contour fixing platform is locked at a specified position of the serpentine inspection guide rail through the adjusting screw.

5. The inspection tool for endoscope snake bones according to claim 1, characterized in that: The angle test range of the test scale lines on the snake bone angle test plate is 90° to 360°.

6. The inspection tool for endoscope snake bones according to claim 1, characterized in that: The test board holding seat and the base are fixedly connected by fastening screws.

7. A method for testing endoscopic snake bones, characterized in that: The inspection tool according to any one of claims 1 to 6 comprises the following steps: S1: Install the snake bone to be tested in the clamping mechanism of the snake bone fixing seat; S2: Hanging a weight block corresponding to the optimal bending strength of the snake bone on the driving wire rope of the snake bone to be tested; S3: Sliding the serpentine bone fixing seat on which the serpentine bone to be tested is installed along the serpentine bone inspection guide rail until the bending portion of the serpentine bone to be tested corresponds to the test scale line on the serpentine bone angle testing plate; S4: reading the angle value corresponding to the bending part of the snake bone to be tested, and comparing it with the preset theoretical bending angle to determine whether the snake bone to be tested is qualified.

8. The method for testing endoscopic snake bones according to claim 7, characterized in that: In step S2, the weight m of the weight block and the optimal bending strength f of the snake bone satisfy the relationship: f=mg Where g is the acceleration due to gravity.

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