Bent angle locking and unlocking structure, endoscope handle and endoscope

Abstract

The utility model provides a bend locking and unlocking structure, an endoscope handle and an endoscope, which relate to the technical field of endoscopes, the bend locking and unlocking structure comprises a mounting hole, a first limiting structure, a second limiting structure, a wrench and a rotating shaft, the wrench is provided with the mounting hole, and the wrench is mounted on the upper side of the rotating shaft through the matching of the mounting hole and a connecting piece; when the wrench rotates around the axis of the mounting hole, the position of the wrench is locked through the second limiting structure; when the wrench rotates around the axis of the rotating shaft, the position of the wrench is locked through the first limiting structure. Through the cooperation of the first limiting structure and the second limiting structure, the wrench can rotate around a single shaft, position locking is rapidly achieved, the problem that the position of a defect in the visual field of a probe is changed due to wrong rotation of the wrench is solved, and the working efficiency is improved; rotation is directly achieved through front-back and transverse pushing of the wrench, and operation is easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of endoscopes, and specifically to a bending angle locking and unlocking structure, an endoscope handle and an endoscope. Background Art

[0002] During endoscope operation, generally, one hand holds the endoscope and rotates the wrench by the thumb to perform the bending angle operation; the other hand holds the insertion tube and performs operations such as advancing, retracting, and rotating the insertion tube.

[0003] During endoscope operation, it is necessary to lock the bending angle to diagnose defects and then unlock it. In the prior art, there are mainly two ways to perform the locking and unlocking operations. One is to perform the locking and unlocking operations with the hand holding the insertion tube, which will cause the position of the probe of the insertion tube to change, resulting in the change of the position of the defect in the field of view of the probe, which is not conducive to diagnosis. The other is to laterally push with the thumb of the hand holding the endoscope to perform the locking and unlocking, but the lateral pushing distance is relatively large, and it is very easy for the wrench to rotate accidentally, resulting in the change of the position of the defect in the field of view of the probe, which is not conducive to diagnosis. Summary of the Utility Model

[0004] Aiming at the defects in the prior art, the purpose of the utility model is to provide a bending angle locking and unlocking structure, an endoscope handle and an endoscope.

[0005] According to a bending angle locking and unlocking structure provided by the utility model, it includes a mounting hole, a first limiting structure, a second limiting structure, a wrench and a rotating shaft. The wrench is provided with a mounting hole, and the wrench is installed on the upper side of the rotating shaft through the cooperation of the mounting hole and a connecting piece;

[0006] When the wrench rotates around the axis of the mounting hole, the position of the wrench is locked through the second limiting structure;

[0007] When the wrench rotates around the axis of the rotating shaft, the position of the wrench is locked through the first limiting structure.

[0008] Preferably, the first limiting structure includes protrusions and friction blocks. A plurality of protrusions are respectively connected to the friction blocks in a matching manner, and the bending angle of the wrench is locked through the cooperation of the protrusions and the friction blocks.

[0009] Preferably, a plurality of protrusions are arranged in an array on the inner wall of the wrench, and the friction blocks are connected to the inner part of the handle upper shell;

[0010] Alternatively, a plurality of protrusions are arranged in an array in the inner part of the handle upper shell, and the friction blocks are connected to the inner wall of the wrench.

[0011] Preferably, the second limiting structure includes a groove and a convex block. The convex block is connected to the groove in a matching manner. The convex block is arranged on the front side wall of the wrench, and the groove is arranged on the inner wall of the handle shell;

[0012] Alternatively, the bump is provided on the inner wall of the handle housing, and the groove is provided on the side wall of the front end of the wrench.

[0013] Preferably, the second limiting structure includes a bump and a limiting block. The bump is provided on the side wall of the wrench, and a plurality of limiting blocks are evenly distributed on the inner wall of the handle housing. The bump is located on the upper and lower sides of the limiting block respectively.

[0014] When the bump moves above the limiting block, the wrench is in the unlocked state.

[0015] When the bump is limited below the limiting block, the wrench is in the locked state.

[0016] Preferably, the second limiting structure includes a first plane and a second plane. The first plane intersects with the second plane, and an included angle is formed between the first plane and the plane.

[0017] The first plane is in interference fit with the upper surface of the rotating shaft, so that the position of the wrench is limited when it rotates around the axis of the mounting hole.

[0018] Preferably, the vertical distance between the first plane and the axis of the mounting hole is greater than the vertical distance between the second plane and the axis of the mounting hole.

[0019] Preferably, the wrench is pushed forward and backward or / and horizontally by the thumb, so that the wrench switches between rotating around the axis of the mounting hole and the axis of the rotating shaft.

[0020] When the thumb pushes the wrench forward and backward, the wrench rotates around the axis of the rotating shaft, and the position of the wrench is locked through the first limiting structure.

[0021] When the thumb pushes the wrench horizontally, the wrench rotates around the axis of the mounting hole. The wrench locks the position through the second limiting structure. At the same time, the position of the wrench rotating around the rotating shaft is locked through the first limiting structure.

[0022] The present invention also provides an endoscope handle, including an angulation locking and unlocking structure.

[0023] The present invention also provides an endoscope, including an endoscope handle.

[0024] Compared with the prior art, the present utility model has the following beneficial effects:

[0025] Through the cooperation of the first limiting structure and the second limiting structure, the present utility model enables the wrench to rotate around a single axis and quickly locks the position, solves the problem that the position of the defect changes in the field of view of the probe due to the accidental rotation of the wrench, and improves the work efficiency; through the forward and backward and horizontal pushing of the wrench, the rotation is directly realized, and the operation is simple and convenient. Description of the Drawings

[0026] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, purposes and advantages of the present utility model will become more obvious:

[0027] Figure 1 It is a schematic structural diagram of Embodiment 2 of the present application;

[0028] Figure 2 It is a schematic structural diagram of Embodiment 3 of the present application;

[0029] Figure 3 It is a partially enlarged view of the wrench in Embodiment 2 of the present application;

[0030] Figure 4 It is a partial schematic diagram of the handle housing in Embodiment 2 of the present application;

[0031] Figure 5 It is a partial schematic diagram of the handle housing in Embodiment 3;

[0032] Figure 6 It is a schematic structural diagram of Embodiment 5 of the present application.

[0033] As shown in the figure: mounting hole 1, first limiting structure 2, protrusion 21, friction block 22, second limiting structure 3, groove 31, limiting block 311, convex block 32, first plane 33, second plane 34, wrench 4, rotating shaft 5. Specific embodiments

[0034] The following will specifically describe the present utility model in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present utility model, but do not limit the present utility model in any form. It should be noted that those of ordinary skill in the art can make several changes and improvements without departing from the concept of the present utility model. These all belong to the protection scope of the present utility model.

[0035] Embodiment 1

[0036] According to a bent angle locking and unlocking structure provided by the present utility model, as Figure 1-4 shown, it includes a mounting hole 1, a first limiting structure 2, a second limiting structure 3, a wrench 4 and a rotating shaft 5. The wrench 4 is provided with a mounting hole 1, and the wrench 4 is installed on the upper side of the rotating shaft 5 through the cooperation of the mounting hole 1 and a connecting member; when the wrench 4 rotates around the axis of the mounting hole 1, the position of the wrench 4 is locked through the second limiting structure 3; when the wrench 4 rotates around the axis of the rotating shaft 5, the position of the wrench 4 is locked through the first limiting structure 2.

[0037] The first limiting structure 2 includes a protrusion 21 and a friction block 22. The protrusion 21 is provided on the inner wall of the wrench 4, and the friction block 22 is located below the protrusion 21. The friction block 22 is sleeved on the inner wall of the handle housing; alternatively, the protrusion 21 is provided on the inner wall of the handle housing, and the friction block 22 is adhered to the inner wall of the wrench 4. The wrench 4 realizes the bending angle locking on the wrench 4 through the cooperation of the protrusion 21 and the friction block 22. The friction block 22 is an elastic friction block in the shape of a circular ring, and the friction block 22 can limit the position with the protrusion 21 regardless of the rotation angle of the wrench 4.

[0038] Working principle: The wrench 4 is pushed forward and backward or horizontally by the thumb, so that the wrench 4 switches between rotating around the axis of the mounting hole 1 and the axis of the rotating shaft 5; when the thumb pushes the wrench 4 forward and backward, the wrench 4 rotates around the axis of the rotating shaft 5, and the wrench 4 realizes the locking position through the frictional cooperation of the protrusion 21 and the friction block 22; when the thumb pushes the wrench 4 horizontally, the wrench 4 rotates around the axis of the mounting hole 1, and the wrench 4 realizes the locking position through the second limiting structure 3. At the same time, the wrench 4 realizes the locking position of the rotation around the rotating shaft 5 through the frictional cooperation of the protrusion 21 and the friction block 22.

[0039] Embodiment 2

[0040] This Embodiment 2 is completed on the basis of Embodiment 1, and mainly further elaborates on the second limiting structure 3, as Figure 3-4 shown, specifically:

[0041] The second limiting structure 3 includes a groove 31 and a convex block 32. The convex block 32 is adaptively connected to the groove 31. The convex block 32 is provided on the front side wall of the wrench 4, and a plurality of grooves 31 are evenly distributed on the inner wall of the handle housing; alternatively, the convex block 32 is provided on the inner wall of the handle housing, and the groove 31 is provided on the front side wall of the wrench 4. When the wrench 4 rotates around the axis of the mounting hole 1, the convex block 32 slides left and right in the groove 31. When the convex block 32 falls into the groove 31, the rotation of the wrench 4 around the axis of the mounting hole 1 realizes the locking position.

[0042] Working principle: When the thumb pushes the wrench 4 forward and backward, the wrench 4 rotates around the axis of the rotating shaft 5, and the wrench 4 realizes the locking position through the frictional cooperation of the protrusion 21 and the friction block 22; when the thumb pushes the wrench 4 horizontally, the wrench 4 rotates around the axis of the mounting hole 1, and the convex block 32 on the wrench 4 falls into the groove 31 to realize the locking position. At the same time, the wrench 4 realizes the locking position of the rotation around the rotating shaft 5 through the frictional cooperation of the protrusion 21 and the friction block 22.

[0043] Embodiment 3

[0044] This Embodiment 3 is completed on the basis of Embodiment 1, and mainly further elaborates on the second limiting structure 3, as Figure 3 and Figure 5 shown, specifically:

[0045] The second limiting structure 3 includes a convex block 32 and a limiting block 311. The convex block 32 is provided on the side wall of the wrench 4, and a plurality of limiting blocks 311 are evenly distributed on the inner wall of the handle housing. The convex block 32 is respectively movable on the upper and lower sides of the limiting block 311. When the convex block 32 is movable on the upper side of the limiting block 311, the wrench 4 is in an unlocked state. When the convex block 32 is limited on the lower side of the limiting block 311, the wrench 4 is in a locked state.

[0046] Working principle: When the thumb pushes the wrench 4 back and forth, the wrench 4 rotates around the axis of the rotating shaft 5. The wrench 4 realizes the locking position through the frictional cooperation between the protrusion 21 and the friction block 22. When the thumb pushes the wrench 4 horizontally, the wrench 4 rotates around the axis of the mounting hole 1. The convex block 32 is limited on the lower side of the limiting block 311. At the same time, the wrench 4 rotates around the rotating shaft 5 to realize the locking position through the frictional cooperation between the protrusion 21 and the friction block 22.

[0047] Embodiment 4

[0048] This Embodiment 4 is completed on the basis of Embodiment 1, mainly to further elaborate on the second limiting structure 3, as Figure 2 shown. Specifically, the second limiting structure 3 includes a first plane 33 and a second plane 34. The first plane 33 intersects with the second plane 34, and an included angle is formed between the first plane 33 and the plane 34. The first plane is in interference fit with the upper surface of the rotating shaft 5 to limit the position when the wrench 4 rotates around the axis of the mounting hole 1. The first plane 33 is close to the first limiting structure 2, and the second plane 34 is far from the first limiting structure 2. The perpendicular distance from the first plane 33 to the axis of the mounting hole 1 is greater than the perpendicular distance from the second plane 34 to the axis of the mounting hole 1.

[0049] Working principle: When the thumb pushes the wrench 4 back and forth, the wrench 4 rotates around the axis of the rotating shaft 5. The wrench 4 realizes the locking position through the frictional cooperation between the protrusion 21 and the friction block 22. When the thumb pushes the wrench 4 horizontally, the wrench 4 rotates around the axis of the mounting hole 1. The first plane 33 at the bottom of the wrench 4 contacts the rotating shaft 5 to realize the locking position. At the same time, the wrench 4 rotates around the rotating shaft 5 to realize the locking position through the frictional cooperation between the protrusion 21 and the friction block 22.

[0050] Embodiment 5

[0051] The present invention also provides an endoscope handle, including the bending angle locking and unlocking structure in Embodiment 2 or Embodiment 3.

[0052] Embodiment 6

[0053] The present invention also provides an endoscope, including the endoscope handle in Embodiment 4, as Figure 5As shown, specifically: it further includes a snake bone, a steel wire rope, and a drum. The snake bone is provided at the front end of the endoscope. One end of the steel wire rope is connected to the snake bone, and the other end of the steel wire rope is wound around the drum. Corresponding two steel wire ropes respectively extend from both sides of the drum, and the two steel wire ropes are respectively connected to both ends of the snake bone. The drum is connected to the inner wall of the handle housing.

[0054] Through the locking of the wrench 4, the locking position of the drum is achieved, and the angle locking of the snake bone is achieved. When the wrench 4 rotates along the axis of the mounting hole 1, it will not rotate along the rotating shaft 5; when the wrench 4 rotates along the rotating shaft 5, it will not rotate along the axis of the mounting hole 1.

[0055] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application 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 should not be construed as a limitation to the present application.

[0056] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other.

Claims

1. A corner locking and unlocking structure, characterized in that: It comprises a mounting hole (1), a first limiting structure (2), a second limiting structure (3), a wrench (4) and a rotating shaft (5); the mounting hole (1) is provided on the wrench (4); the wrench (4) is mounted on the upper side of the rotating shaft (5) through the cooperation between the mounting hole (1) and a connecting piece; When the wrench (4) rotates around the axis of the mounting hole (1), the wrench (4) is locked in position by the second limiting structure (3); When the wrench (4) rotates around the axis of the rotating shaft (5), the position of the wrench (4) is locked by the first limiting structure (2).

2. The angle locking and unlocking structure according to claim 1, characterized in that: The first limiting structure (2) comprises a protrusion (21) and a friction block (22); a plurality of the protrusions (21) are respectively adapted to be connected with the friction blocks (22); and the wrench (4) achieves angle locking on the wrench (4) through the cooperation between the protrusions (21) and the friction blocks (22).

3. The angle locking and unlocking structure according to claim 2, characterized in that: A plurality of protrusions (21) are arranged in an array on the inner wall of the wrench (4), and the friction block (22) is connected to the upper shell of the handle; Alternatively, a plurality of protrusions (21) are arranged in an array inside the upper shell of the handle, and the friction block (22) is connected to the inner wall of the wrench (4).

4. The angle locking and unlocking structure according to claim 1, characterized in that: The second limiting structure (3) comprises a groove (31) and a convex block (32), wherein the convex block (32) is adaptively connected to the groove (31), the convex block (32) is arranged on the front end side wall of the wrench (4), and the groove (31) is arranged on the inner wall of the handle housing; Alternatively, the protrusion (32) is arranged on the inner wall of the handle housing, and the groove (31) is arranged on the front end side wall of the wrench (4).

5. The angle locking and unlocking structure according to claim 4, characterized in that: The second limiting structure (3) comprises a protrusion (32) and a limiting block (311), wherein the protrusion (32) is arranged on the side wall of the wrench (4), a plurality of limiting blocks (311) are evenly distributed on the inner wall of the handle housing, and the protrusions (32) are respectively located on the upper and lower sides of the limiting block (311); When the protrusion (32) moves on the upper side of the limit block (311), the wrench (4) is in an unlocked state; When the protrusion (32) is limited to the lower side of the limiting block (311), the wrench (4) is in a locked state.

6. The angle locking and unlocking structure according to claim 1, characterized in that: The second limiting structure (3) comprises a first plane (33) and a second plane (34), the first plane (33) intersects with the second plane (34), and an angle is formed between the first plane (33) and the plane (34); The first plane is interference-fitted with the upper surface of the rotating shaft (5), so that the position of the wrench (4) is limited when it rotates around the axis of the mounting hole (1).

7. The angle locking and unlocking structure according to claim 6, characterized in that: The vertical distance between the first plane (33) and the axis of the mounting hole (1) is greater than the vertical distance between the second plane (34) and the axis of the mounting hole (1).

8. The angle locking and unlocking structure according to claim 1, characterized in that: The wrench (4) is pushed forward and backward or / and laterally by the thumb, so that the wrench (4) switches between rotating around the axis of the mounting hole (1) and the axis of the rotating shaft (5); When the thumb pushes the wrench (4) forward and backward, the wrench (4) rotates around the axis of the rotating shaft (5), and the wrench (4) is locked in position by the first limiting structure (2); When the thumb pushes the wrench (4) laterally, the wrench (4) rotates around the axis of the mounting hole (1), and the wrench (4) is locked in position by the second limiting structure (3). At the same time, the first limiting structure (2) is used to lock the position of the wrench (4) rotating around the rotating shaft (5).

9. An endoscope handle, characterized in that: It includes the angle locking and unlocking structure as described in any one of claims 1-8.

10. An endoscope, characterized in that: Including the endoscope handle of claim 9.

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