Positioning tool for assembling a rigid endoscope

Abstract

The utility model discloses a kind of positioning tool for hard tube endoscope assembly, is positioning tool technical field, including bottom plate, the upper surface of bottom plate is fixedly provided with fixed block, the top of fixed block is fixedly provided with endoscope shell limiting assembly, and the side of fixed block is provided with hard tube support assembly;The endoscope shell limiting assembly includes V-shaped limiting slot being opened in the top of fixed block, and limiting block being fixed in the both sides of fixed block, limiting hole being opened in the surface of limiting block.The utility model is matched with the up and down of V-shaped limiting slot and arc limiting top plate, can be from different direction to endoscope shell form wrap type limiting.V-shaped structure can be automatically centered different diameter shell, arc limiting top plate is attached shell surface, avoid shell to appear in the process of assembly deviation, shaking, ensure subsequent butt joint precision with hard tube, reduce the assembly error caused by positioning deviation.

Description

Technical Field

[0001] This utility model relates to the field of positioning tooling technology, and in particular to a positioning tooling for assembling a rigid endoscope. Background Technology

[0002] During the production and assembly of rigid endoscopes, the endoscope housing and rigid tube must be precisely aligned and assembled. The positioning accuracy of the two directly determines the imaging effect and performance of the endoscope. Therefore, there are high requirements for the stability, adaptability and ease of operation of the assembly and positioning fixtures.

[0003] Existing positioning fixtures generally suffer from a lack of diversity in their positioning structure, making them difficult to adapt to endoscope housings of different diameters. Furthermore, they lack effective anti-displacement mechanisms, leading to lateral wobbling or vertical displacement of the housing during assembly, resulting in misalignment of the port when the rigid tube is subsequently connected to the housing. Moreover, existing fixtures offer insufficient support and adjustment for the rigid tube, mostly allowing only unidirectional positional adjustment and failing to flexibly adjust the height and horizontal position of the rigid tube according to actual assembly requirements, thus extending assembly preparation time. Therefore, we have designed a positioning fixture for rigid tube endoscope assembly. Utility Model Content

[0004] This utility model discloses a positioning fixture for assembling a rigid endoscope, which aims to solve the technical problems of existing positioning fixtures.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A positioning fixture for assembling a rigid endoscope includes a base plate, a fixing block is fixedly disposed on the upper surface of the base plate, an endoscope housing limiting component is fixedly disposed on the top of the fixing block, and a rigid tube support component is disposed on the side of the fixing block. The endoscope housing limiting assembly includes a V-shaped limiting groove formed on the top of the fixed block, and limiting blocks fixed on both sides of the fixed block. Limiting through holes are formed on the surface of the limiting blocks. Movable rods are slidably connected to the inner walls of the limiting through holes. Movable blocks are fixedly connected to the top ends of the movable rods. A limiting top plate is fixedly connected between the two movable blocks. The limiting top plate is located directly above the V-shaped limiting groove.

[0006] In a preferred embodiment, a compression spring is fitted onto the surface of the movable rod, the top end of the compression spring is fixedly connected to the lower surface of the limiting block, and the top end of the compression spring is fixedly connected to the bottom end of the movable rod. A U-shaped handle is fixedly connected to the upper surface of the two movable blocks.

[0007] In a preferred embodiment, the limiting top plate is arc-shaped, and a rubber pad is fixedly provided on the lower surface of the limiting top plate. An anti-slip pad is fixedly connected to the inner wall of the V-shaped limiting groove, and a plurality of anti-slip grooves are formed on the surface of the anti-slip pad.

[0008] In a preferred embodiment, the side of the fixing block is provided with a rectangular adjustment hole, and the rigid tube support assembly includes an adjustment screw rotatably connected to the inner wall of the rectangular adjustment hole. A support plate is threadedly connected to the surface of the adjustment screw, and a strip frame is fixed to the upper surface of the support plate. A push screw is rotatably connected to the inner wall of the strip frame.

[0009] In a preferred embodiment, the surface of the push screw is threadedly connected to a movable bracket, the top of the movable bracket is fixedly connected to a rigid tube limiting sleeve, the upper surface of the rigid tube limiting sleeve is rotatably connected to a positioning screw, the surface of the positioning screw is threadedly connected to a positioning plate, the lower surface of the positioning plate is fixedly connected to two abutting rods, the bottom ends of the two abutting rods extend into the interior of the rigid tube limiting sleeve, and are fixedly connected to an arc-shaped locking block.

[0010] In a preferred embodiment, one end of the push screw extends to the outside of the strip frame and is fixedly connected to an adjustment knob. The top end of the positioning screw is fixed with a positioning knob. The upper surface of the rigid tube limiting sleeve has two sliding through holes that match the clamping rods. The clamping rods are slidably connected to the inner wall of the sliding through holes.

[0011] In a preferred embodiment, two limiting rods are fixed to the upper surface of the base plate, and limiting support blocks are fixedly connected to both sides of the support plate. The limiting support blocks are slidably connected to the surfaces of the limiting rods.

[0012] In a preferred embodiment, the surface of the fixing block is provided with a mounting groove, and a worm gear is rotatably connected to the inner wall of the mounting groove. One end of the worm gear extends to the outside of the fixing block and is fixed with an operating knob. The bottom end of the adjusting screw extends to the inside of the mounting groove and is fixed with a rotating shaft. A worm wheel is fixed to the surface of the rotating shaft, and the worm gear meshes with the worm wheel.

[0013] As can be seen from the above, the positioning fixture for assembling a rigid endoscope provided by this utility model has the following technical effects.

[0014] 1. By utilizing the interlocking of the V-shaped limiting groove and the arc-shaped limiting top plate, the endoscope housing can be enveloped and limited from both top and bottom directions. The V-shaped structure can automatically align housings of different diameters, while the arc-shaped limiting top plate conforms to the housing surface, preventing the housing from shifting or wobbling during assembly. This ensures the accuracy of subsequent docking with rigid tubing and reduces assembly errors caused by positioning deviations. The rubber pads and the anti-slip pads on the inner wall of the V-shaped limiting groove provide double protection, improving the stability of the housing while protecting its appearance from damage. This is particularly suitable for the positioning requirements of precision endoscope housings.

[0015] 2. By rotating the operating knob, the worm gear rotates, meshing with the worm wheel to drive the adjusting screw, thereby raising and lowering the support plate vertically. This allows for precise adjustment of the rigid tube limiting sleeve height according to the required docking height between the rigid tube and the endoscope housing, accommodating rigid tubes of different lengths and assembly positions. Rotating the adjusting knob also rotates the advancing screw, causing the moving bracket to slide horizontally along the strip frame, thus adjusting the horizontal position of the rigid tube. This ensures precise alignment of the rigid tube with the endoscope housing's docking port, avoiding assembly difficulties or gaps caused by rigid tube misalignment.

[0016] 3. After the rigid tube is placed into the rigid tube limiting sleeve, rotating the positioning knob will drive the positioning screw to descend, causing the positioning plate and clamping rod to move downwards, so that the arc-shaped clamping block tightly fits the surface of the rigid tube, forming a stable clamping effect. The arc-shaped clamping block adapts to the circular structure of the rigid tube, which can ensure the clamping force while avoiding deformation of the rigid tube surface under pressure, ensuring that the rigid tube maintains a stable posture during assembly and improving docking accuracy. Attached Figure Description

[0017] Figure 1 This is a front view schematic diagram of a positioning fixture for assembling a rigid endoscope proposed in this utility model.

[0018] Figure 2 This is a top view of the positioning fixture for assembling a rigid endoscope proposed in this utility model.

[0019] Figure 3 This is a schematic diagram of the endoscope housing limiting component of a positioning tool for assembling a rigid endoscope according to the present invention.

[0020] Figure 4 for Figure 1 A magnified structural diagram of point A in the middle.

[0021] In the attached diagram: 1. Base plate; 2. Fixing block; 3. Endoscope housing limiting assembly; 4. Rigid tube support assembly; 301. V-shaped limiting groove; 302. Limiting block; 303. Movable rod; 304. Movable block; 305. Limiting top plate; 306. Compression spring; 307. U-shaped handle; 308. Rubber pad; 309. Anti-slip pad; 401. Adjusting screw; 402. Support plate; 403. Strip frame; 404. Push screw; 405. Moving bracket; 406. Rigid tube limiting sleeve; 407. Positioning screw; 408. Positioning plate; 409. Clamping rod; 410. Arc-shaped locking block; 411. Adjusting knob; 412. Limiting rod; 413. Limiting support block; 414. Worm gear; 415. Operating knob; 416. Rotating shaft; 417. Worm wheel. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figures 1-4 A positioning fixture for assembling a rigid endoscope includes a base plate 1. A fixing block 2 is fixedly disposed on the upper surface of the base plate 1. The surface of the fixing block 2 supports the endoscope housing limiting component 3 and the rigid tube support component 4, providing a stable platform for the subsequent positioning and assembly of the endoscope housing and the rigid tube.

[0024] The endoscope housing limiting component 3 is fixed to the top of the fixing block 2 to limit and fix the endoscope housing; the rigid tube support component 4 is set on the side of the fixing block 2 to support and adjust the position of the rigid tube to ensure that the rigid tube is accurately connected to the endoscope housing.

[0025] The endoscope housing limiting component 3 is the core structure for positioning the endoscope housing. The V-shaped limiting groove 301 is directly formed on the top of the fixing block 2, serving as the bottom support and initial limiting structure for the endoscope housing. The V-shaped structure can automatically center endoscope housings of different diameters, achieving initial centering positioning of the housing without additional adjustment, effectively reducing offset errors during housing placement and laying the foundation for subsequent precise docking.

[0026] There are two limiting blocks 302, which are fixed on both sides of the fixed block 2 and symmetrically distributed on both sides of the V-shaped limiting groove 301. The surface of the limiting block 302 is provided with a through limiting hole, which provides a sliding channel for the movable rod 303, ensuring that the movable rod 303 can only move in the vertical direction and preventing the movable rod 303 from shifting and causing the limiting top plate 305 to be misaligned.

[0027] The outer wall of the movable rod 303 is slidably connected to the inner wall of the limiting through hole of the limiting block 302, and the movable rod 303 can slide freely up and down along the limiting through hole. The top of the movable rod 303 is fixedly connected to the movable block 304. The two movable blocks 304 are respectively located directly above the limiting blocks 302 on both sides of the fixed block 2, and a limiting top plate 305 is fixedly connected between the two movable blocks 304. When the movable rod 303 slides up and down, the limiting top plate 305 can be driven to rise and fall synchronously through the movable blocks 304, so as to press or release the inner shell of the V-shaped limiting groove 301.

[0028] The limiting top plate 305 is arc-shaped and located directly above the V-shaped limiting groove 301, with its concave arc facing downwards and opposite to the opening direction of the V-shaped limiting groove 301. The arc-shaped structure can conform to the outer surface of the endoscope housing, increasing the contact area with the housing and preventing excessive local pressure from causing housing deformation. At the same time, the upper and lower cooperation of the limiting top plate 305 and the V-shaped limiting groove 301 can form a wrapping limiting effect on the housing from different directions, preventing the housing from swaying left and right or shifting up and down during assembly, and significantly improving positioning stability.

[0029] The rubber pad 308 is fixedly installed on the lower surface of the limiting top plate 305, that is, on the contact surface between the limiting top plate 305 and the endoscope housing. The rubber material has good elasticity and cushioning, which can avoid hard contact between the limiting top plate 305 and the housing, effectively prevent the housing surface from being scratched or indented, protect the integrity of the housing appearance, and is especially suitable for the positioning requirements of precision endoscope housings.

[0030] The anti-slip pad 309 is fixedly connected to the inner wall of the V-shaped limiting groove 301, and the surface of the anti-slip pad 309 is provided with several anti-slip grooves. The anti-slip pad 309 can increase the friction between the housing and the inner wall of the V-shaped limiting groove 301, further preventing the housing from sliding in the groove.

[0031] A compression spring 306 is sleeved on the surface of the movable rod 303, with its top end fixedly connected to the lower surface of the limiting block 302 and its bottom end fixedly connected to the bottom end of the movable rod 303. When the movable rod 303 is pulled upward, the compression spring 306 is stretched and stores force; after the movable rod 303 is released, the elastic restoring force of the compression spring 306 can drive the movable rod 303 to move downward automatically, thereby causing the limiting top plate 305 to automatically press against the housing. This eliminates the need for manual adjustment and fixation, simplifies the operation steps, and improves assembly efficiency.

[0032] The U-shaped handle 307 is fixedly connected to the upper surface of the two movable blocks 304 and is located in the middle of the two movable blocks 304. The operator can easily lift or press down the movable blocks 304 by holding the U-shaped handle 307, thereby controlling the raising and lowering of the limit plate 305.

[0033] The rigid tube support assembly 4 is used to support the rigid tube and adjust its position to ensure that the rigid tube is precisely aligned with the endoscope housing. The rectangular adjustment hole is opened on the side of the fixing block 2 and is opposite to the rigid tube assembly direction, providing installation and rotation space for the adjustment screw 401, ensuring that the rotation of the adjustment screw 401 can drive the subsequent components to achieve position adjustment.

[0034] The adjusting screw 401 is rotatably connected to the inner wall of the rectangular adjusting hole, with its axis set vertically. The surface of the adjusting screw 401 is threadedly connected to the inside of the support plate 402. When the adjusting screw 401 rotates, due to the threaded transmission, the support plate 402 can move up and down along the axis of the adjusting screw 401, thereby adjusting the height of the rigid pipe support and adapting to the assembly requirements of rigid pipes of different lengths.

[0035] The surface of the fixing block 2 has a mounting groove. A worm gear 414 is rotatably connected to the inner wall of the mounting groove, with one end extending to the outside of the fixing block 2 and fixedly connected to an operating knob 415, and the other end located inside the mounting groove. The bottom end of the adjusting screw 401 extends into the mounting groove and is fixedly connected to a rotating shaft 416. A worm wheel 417 is fixedly sleeved on the surface of the rotating shaft 416, and the worm wheel 417 meshes with the worm gear 414. When the operator rotates the operating knob 415, the worm gear 414 rotates. Through the meshing transmission with the worm wheel 417, the worm gear 414 drives the rotating shaft 416 and the adjusting screw 401 to rotate synchronously. It has a self-locking function, preventing the adjusting screw 401 from rotating on its own after adjustment, ensuring the height stability of the support plate 402 and preventing height deviation of the rigid tube during assembly.

[0036] The strip frame 403 is fixed to the upper surface of the support plate 402, and the length direction of the strip frame 403 is consistent with the assembly direction of the rigid tube, providing a mounting carrier for the push screw 404, while limiting the movement direction of the movable bracket 405.

[0037] The push screw 404 is rotatably connected to the inner wall of the strip frame 403, with its axis set along the length of the strip frame 403. The surface of the push screw 404 is threadedly connected to the inside of the movable bracket 405. One end of the push screw 404 extends to the outside of the strip frame 403 and is fixedly connected to an adjustment knob 411. When the operator rotates the adjustment knob 411, it can drive the push screw 404 to rotate, which drives the movable bracket 405 to slide horizontally along the length of the strip frame 403 through threaded transmission. This adjusts the position of the rigid tube in the horizontal direction, ensuring precise alignment between the rigid tube and the docking port of the endoscope housing, and avoiding assembly difficulties caused by positional deviations.

[0038] The rigid tube limiting sleeve 406 is fixedly connected to the top of the movable bracket 405, and the axis of the rigid tube limiting sleeve 406 is consistent with the docking direction of the endoscope housing, used to accommodate and initially limit the rigid tube. The rigid tube limiting sleeve 406 can support the rigid tube, prevent the rigid tube from sagging or deviating during horizontal movement, and ensure that the rigid tube always moves in the correct direction.

[0039] The positioning screw 407 is rotatably connected to the upper surface of the rigid pipe limiting sleeve 406, with its axis set vertically. A positioning knob is fixedly connected to the top end of the positioning screw 407, and the bottom end extends into the rigid pipe limiting sleeve 406 and is threadedly connected to the positioning plate 408. When the operator rotates the positioning knob, it can drive the positioning screw 407 to rotate, which drives the positioning plate 408 to move up and down vertically through threaded transmission, providing power for the subsequent clamping or loosening of the rigid pipe.

[0040] There are two clamping rods 409, both fixedly connected to the lower surface of the positioning plate 408 and symmetrically distributed on both sides of the positioning screw 407. The upper surface of the rigid tube limiting sleeve 406 has a sliding through hole that matches the two clamping rods 409. The outer wall of the clamping rod 409 is slidably connected to the inner wall of the sliding through hole. The bottom end of the clamping rod 409 extends into the interior of the rigid tube limiting sleeve 406 and is fixedly connected to an arc-shaped locking block 410. When the positioning plate 408 moves up and down, it can drive the clamping rod 409 to slide up and down synchronously along the sliding through hole. The sliding through hole can limit the movement direction of the clamping rod 409 and prevent the clamping rod 409 from shifting and causing the arc-shaped locking block 410 to be misaligned. At the same time, the symmetrical arrangement of the two clamping rods 409 can ensure that the clamping force of the arc-shaped locking block 410 on the rigid tube is uniform and prevent the rigid tube from deforming due to uneven force.

[0041] The arc-shaped locking block 410 is located inside the rigid tube limiting sleeve 406, with its arc-shaped convex surface facing upwards, forming a clamping space with the inner wall of the rigid tube limiting sleeve 406. The arc-shaped structure can fit the circular outer surface of the rigid tube, increasing the contact area with the rigid tube, ensuring clamping force, and preventing the rigid tube from sliding during assembly.

[0042] There are two limiting rods 412, both fixed to the upper surface of the base plate 1 and symmetrically distributed on both sides of the fixing block 2; both sides of the support plate 402 are fixedly connected to limiting support blocks 413, and the inside of the limiting support block 413 is provided with through holes that match the limiting rods 412. The inner wall of the through hole of the limiting support block 413 is slidably connected to the surface of the limiting rods 412.

[0043] When the support plate 402 moves up and down, the limiting support block 413 can slide synchronously along the limiting rod 412. The limiting rod 412 can limit the direction of movement of the support plate 402, prevent the support plate 402 from tilting or shaking during the up and down movement, ensure that the support plate 402 always remains horizontal, thereby ensuring the horizontal position of the rigid pipe is stable and improving the docking accuracy.

[0044] Working principle: First, the endoscope housing is positioned and fixed: The operator holds the U-shaped handle 307 and pulls it upward, causing the movable block 304 and movable rod 303 to rise synchronously. At this time, the compression spring 306 is stretched and stored, and the limiting top plate 305 rises away from the V-shaped limiting groove 301 along with the movable block 304. The endoscope housing is placed in the V-shaped limiting groove 301. The inner wall of the V-shaped limiting groove 301 and the anti-slip rubber pad 309 provide initial limiting and anti-slip for the housing. The U-shaped handle 307 is released, and the elastic restoring force of the compression spring 306 drives the movable rod 303, movable block 304 and limiting top plate 305 to move down automatically. The rubber pad 308 on the lower surface of the limiting top plate 305 adheres to the surface of the housing and cooperates with the V-shaped limiting groove 301 to form a wrap-around limiting, thus completing the fixation of the endoscope housing.

[0045] The rigid tube is placed inside the rigid tube limiting sleeve 406. Rotating the positioning knob rotates the positioning screw 407, which in turn drives the positioning plate 408 downwards. The positioning plate 408 then moves the clamping rod 409 downwards along the sliding through hole, causing the arc-shaped locking block 410 to fit against the surface of the rigid tube, thus clamping and fixing the rigid tube. Subsequently, according to the docking height of the endoscope housing, rotating the operating knob 415 rotates the worm gear 414. The worm gear 414 meshes with the worm wheel 417, driving the rotating shaft 41... 6. Rotate the adjusting screw 401, which drives the support plate 402 to slide up and down along the limiting rod 412 until the height of the rigid tube matches the docking height of the endoscope housing. Then, rotate the adjusting knob 411, which drives the push screw 404 to rotate. The push screw 404 drives the moving bracket 405 to slide horizontally along the strip frame 403. The moving bracket 405 drives the rigid tube limiting sleeve 406 and the rigid tube to move synchronously until the docking port of the rigid tube is precisely aligned with the docking port of the endoscope housing. Finally, the operator can assemble the rigid tube and the endoscope housing.

[0046] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A positioning fixture for assembling a rigid endoscope, comprising a base plate (1), characterized in that, A fixing block (2) is fixedly provided on the upper surface of the base plate (1), an endoscope housing limiting component (3) is fixedly provided on the top of the fixing block (2), and a rigid tube support component (4) is provided on the side of the fixing block (2). The endoscope housing limiting assembly (3) includes a V-shaped limiting groove (301) opened on the top of the fixed block (2) and limiting blocks (302) fixed on both sides of the fixed block (2). A limiting through hole is opened on the surface of the limiting block (302). A movable rod (303) is slidably connected to the inner wall of the limiting through hole. A movable block (304) is fixedly connected to the top of the movable rod (303). A limiting top plate (305) is fixedly connected between the two movable blocks (304). The limiting top plate (305) is located directly above the V-shaped limiting groove (301).

2. The positioning fixture for assembling a rigid endoscope according to claim 1, characterized in that, A compression spring (306) is sleeved on the surface of the movable rod (303). The top end of the compression spring (306) is fixedly connected to the lower surface of the limiting block (302), and the top end of the compression spring (306) is fixedly connected to the bottom end of the movable rod (303). A U-shaped handle (307) is fixedly connected to the upper surface of the two movable blocks (304).

3. The positioning fixture for assembling a rigid endoscope according to claim 2, characterized in that, The limiting top plate (305) is arc-shaped, and a rubber pad (308) is fixedly provided on the lower surface of the limiting top plate (305). An anti-slip pad (309) is fixedly connected to the inner wall of the V-shaped limiting groove (301), and a number of anti-slip grooves are provided on the surface of the anti-slip pad (309).

4. The positioning fixture for assembling a rigid endoscope according to claim 3, characterized in that, The fixed block (2) has a rectangular adjustment hole on its side. The rigid tube support assembly (4) includes an adjustment screw (401) rotatably connected to the inner wall of the rectangular adjustment hole. The surface of the adjustment screw (401) is threaded with a support plate (402). A strip frame (403) is fixed on the upper surface of the support plate (402). A push screw (404) is rotatably connected to the inner wall of the strip frame (403).

5. A positioning fixture for assembling a rigid endoscope according to claim 4, characterized in that, The surface of the push screw (404) is threadedly connected to a movable bracket (405). The top of the movable bracket (405) is fixedly connected to a rigid tube limiting sleeve (406). The upper surface of the rigid tube limiting sleeve (406) is rotatably connected to a positioning screw (407). The surface of the positioning screw (407) is threadedly connected to a positioning plate (408). The lower surface of the positioning plate (408) is fixedly connected to two abutting rods (409). The bottom ends of the two abutting rods (409) extend into the interior of the rigid tube limiting sleeve (406) and are fixedly connected to an arc-shaped locking block (410).

6. A positioning fixture for assembling a rigid endoscope according to claim 5, characterized in that, One end of the push screw (404) extends to the outside of the strip frame (403) and is fixedly connected to an adjustment knob (411). The top end of the positioning screw (407) is fixed with a positioning knob. The upper surface of the rigid tube limiting sleeve (406) is provided with two sliding through holes that match the clamping rods (409). The clamping rods (409) are slidably connected to the inner wall of the sliding through holes.

7. A positioning fixture for assembling a rigid endoscope according to claim 6, characterized in that, Two limiting rods (412) are fixed on the upper surface of the base plate (1), and limiting support blocks (413) are fixedly connected to both sides of the support plate (402). The limiting support blocks (413) are slidably connected to the surfaces of the limiting rods (412).

8. A positioning fixture for assembling a rigid endoscope according to claim 7, characterized in that, The surface of the fixing block (2) is provided with an installation groove, and a worm gear (414) is rotatably connected to the inner wall of the installation groove. One end of the worm gear (414) extends to the outside of the fixing block (2) and is fixed with an operating knob (415). The bottom end of the adjusting screw (401) extends to the inside of the installation groove and is fixed with a rotating shaft (416). A worm wheel (417) is fixed on the surface of the rotating shaft (416), and the worm gear (414) meshes with the worm wheel (417).

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