Self-limiting steel wire adjusting mechanism and endoscope

Abstract

The utility model relates to the technical field of endoscopes, in particular to a self-limiting steel wire adjusting mechanism and an endoscope. The self-limiting steel wire adjusting mechanism comprises a base and a turntable, a rotating shaft seat is formed on the base; the turntable is arranged between the rotating shaft seats; the rotating shaft penetrates through the rotating shaft seats and the turntable; an arc-shaped groove is formed in the base, and the rotating disc moves in the arc-shaped groove; the rotating disc is provided with a connecting arm and a control rod, the steel wire penetrates through the connecting arm, and the connecting arm can be stopped by a limiting plate on the base. The rotating shaft penetrates through the rotating shaft seat and the rotating disc, the rotating disc rotates on the rotating shaft, and the rotating structure is simple and smoother. And the arc-shaped groove can limit the turntable, so that the turntable is prevented from deviating, and the stability is better. A connecting arm and a control rod extend from the turntable. When the steel wire penetrates through the connecting arm and the rotating disc rotates to a certain amplitude, the connecting arm can be stopped by the limiting plate on the base, the limiting structure is simpler, and rotation is smoother.

Description

Technical Field

[0001] The utility model relates to the technical field of endoscopes, in particular to a self-limiting steel wire adjustment mechanism and an endoscope. Background Art

[0002] Endoscope is a multidisciplinary tool that can be used to inspect deep into curved pipes, observe parts that cannot be directly seen, observe the internal space structure and state in a sealed cavity, and realize long-distance observation and operation. Currently, industrial endoscopes are commonly used, mainly for automobiles, aircraft engines, pipelines, mechanical parts, etc., and can achieve non-destructive testing without disassembling or destroying the assembly and stopping the equipment.

[0003] When using an endoscope, the rotation angle needs to be limited to prevent the endoscope from being damaged due to excessive rotation angle. To achieve this function, some endoscopes use a limiter and an arc groove to limit the rotation angle of the endoscope. This structure is relatively complicated to process. At the same time, the movement of the limiter in the arc groove will increase the friction resistance and the rotation will not be smooth.

[0004] For example, Chinese patent application number: CN202320336571.7 discloses a self-limiting arc-shaped swing structure, a wire adjustment mechanism and an endoscope. Specifically, it discloses that "an arc-shaped groove is provided at the bottom of the turntable, and a vertical limit rod is provided on the protective cover, and the upper part of the limit rod is limited in the arc-shaped groove. That is, the upper part of the limit rod is placed in the arc-shaped groove, and its range of movement is limited by the arc-shaped groove structure, and it can only move in the arc-shaped groove, so that the rotation angle of the turntable is limited, and the turntable can only rotate within a certain range." The upper part of the limit rod is placed in the arc-shaped groove. This design is more complicated, which will increase friction and make the rotation not smooth. Utility Model Content

[0005] In view of this, the present invention aims at the deficiencies of the prior art, and its main purpose is to provide a self-limiting wire adjustment mechanism, which not only has a simple limiting structure but also rotates smoothly, thereby overcoming the deficiencies of the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The present application provides a self-limiting wire adjustment mechanism, comprising a base and a turntable; a rotating shaft seat is formed on the base; the turntable is arranged between the rotating shaft seats, and the rotating shaft passes through the rotating shaft seat and the turntable; an arc groove is arranged on the base, and the turntable moves in the arc groove;

[0008] The turntable is provided with a connecting arm and a control rod, the steel wire is passed through the connecting arm, and the connecting arm can be stopped by a limiting plate on the base.

[0009] Preferably, there are two connecting arms, the arc A between the two connecting arms is between 90-150 degrees, and the arc angle of the arc groove is between 30-60 degrees.

[0010] Preferably, the ratio of the length L of the control rod to the radius R of the turntable is between 1-1.5.

[0011] Preferably, avoidance openings are provided on the left and right sides of the base, and the steel wire passes through the avoidance openings.

[0012] Preferably, a plurality of first mounting holes are provided on the base, and a first positioning column is provided on the limiting plate.

[0013] Preferably, a support seat extends from the bottom of the base, and the support seat has a second positioning column and a second mounting hole.

[0014] Preferably, the connecting arm is provided with a rope end hole; the steel wire passes through the rope end hole, and the rope end of the steel wire is embedded in the rope end hole.

[0015] Preferably, the outer side of the rotating shaft seat is provided with a reinforcement grid, and the control rod is provided with a toggle key.

[0016] The present application provides an endoscope, comprising the self-limiting wire adjustment mechanism; the base is arranged and fixed in a shell, and the control rod extends from the shell and can swing back and forth.

[0017] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that the turntable is arranged between the rotating shaft seat, the rotating shaft passes through the rotating shaft seat and the turntable, and the turntable rotates on the rotating shaft. This rotating structure is simple and smoother. The arc groove can limit the turntable to prevent the turntable from deviating, and the stability is better.

[0018] The turntable is extended with a connecting arm and a control rod. The steel wire is passed through the connecting arm. When the turntable rotates to a certain range, the connecting arm will be stopped by the limit plate on the base. This design reduces friction, the limit structure is simpler, and the rotation is smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0020] Figure 2 It is an embodiment of the utility model Figure 1 Schematic diagram from another angle.

[0021] Figure 3 It is an exploded schematic diagram of an embodiment of the utility model.

[0022] Figure 4 It is a side view schematic diagram of an embodiment of the utility model.

[0023] Figure 5 It is an embodiment of the utility model Figure 4 AA section diagram.

[0024] Description of the accompanying drawings:

[0025] 10. Base; 11. First mounting hole; 12. Rotating shaft seat; 13. Reinforcement grille; 14. Arc groove; 15. Limit plate; 16. First positioning column; 110. Support seat; 111. Second positioning column; 112. Second mounting hole; 20. Turntable; 21. Rotating shaft; 22. Connecting arm; 23. Control lever; 24. Steel wire 25. Rope head hole; 26. Toggle key. DETAILED DESCRIPTION

[0026] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0027] Please refer to Figures 1 to 5 As shown, it shows the specific structure of the preferred embodiment of the utility model, which is a self-limiting wire adjustment mechanism.

[0028] Among them, connecting arms 22 extend from the left and right sides of the turntable 20, and a control rod 23 extends from the top of the turntable 20. When the turntable 20 rotates to a certain angle, the connecting arms 22 are stopped by the limit plates 15 on the base 10. This design makes the assembly structure of the turntable 20 simple, the friction is very small, and the rotation is smoother.

[0029] The present application provides a self-limiting steel wire adjustment mechanism, comprising a base 10 and a turntable 20; a rotating shaft 21 seat 12 is formed on the base 10; the turntable 20 is arranged between the rotating shaft 21 seat 12, and the rotating shaft 21 passes through the rotating shaft 21 seat 12 and the turntable 20; an arc groove 14 is arranged on the base 10, and the turntable 20 moves in the arc groove 14; the turntable 20 is provided with a connecting arm 22 and a control rod 23, and the steel wire 24 passes through the connecting arm 22, and the connecting arm 22 can be stopped by the limiting plate 15 on the base 10. The base 10 and the turntable 20 of this embodiment are preferably made of plastic. There are two rotating shaft 21 seats 12. When assembling, the turntable 20 is arranged between the two rotating shaft 21 seats 12, and then the rotating shaft 21 passes through the rotating shaft 21 seat 12 and the turntable 20, and the turntable 20 can smoothly rotate on the rotating shaft 21 seat 12. The turntable 20, the connecting arm 22, and the control rod 23 are integrally formed, and the structure has high strength and good stability, and is more convenient to use with the base 10. The base 10 is provided with one or two limit plates 15, and the limit plates 15 are symmetrically arranged. Figure 5As shown, the present embodiment has a limit plate 15. When the turntable 20 rotates clockwise, the connecting arm 22 on the right will be stopped by the limit plate 15. When rotating counterclockwise, the connecting arm 22 on the left will be stopped by the end of the arc groove 14. This angle control has a simple structure, is easy to assemble, and does not generate new friction, so the rotation is smoother. The steel wire 24 is used to control the adjustment direction of the endoscope. The arc groove 14 can limit the turntable 20 to prevent it from running off the track. More preferably, the turntable 20 moves in the arc groove 14 with a certain clamping force, which can play a self-locking function, that is, the turntable 20 will not rotate without external force, and the angle of the endoscope will not change.

[0030] Preferably, there are two connecting arms 22, the arc A between the two connecting arms 22 is between 90-150 degrees, and the arc B of the arc groove 14 is between 30-60 degrees. The arc A minus the arc B is the rotation angle of the turntable 20, that is, the rotation angle of the turntable 20 is between 60-90 degrees, and the endoscope can achieve a 90° turn, which can adapt to various usage scenarios.

[0031] According to the lever principle, the ratio of the length L of the control rod 23 to the radius R of the turntable 20 is between 1-1.5, so only a small force is needed to rotate the turntable 20, that is, the turntable 20 can easily pull the steel wire 24 to move.

[0032] Preferably, the connecting arm 22 is provided with a rope end hole 25; the steel wire 24 passes through the rope end hole 25, and the rope end of the steel wire 24 is embedded in the rope end hole 25. The left and right sides of the base 10 are provided with avoidance openings, and the steel wire 24 passes through the avoidance openings. The left and right sides of the base 10 are provided with avoidance openings, and this structure is very simple and can be directly injection molded. After the steel wire 24 passes through the rope end hole 25, the steel wire 24 passes through the avoidance opening to control the movement of the endoscope lens, tool, clamp, etc.

[0033] Preferably, the base 10 is provided with a plurality of first mounting holes 11, and the limiting plate 15 is provided with a first positioning column 16. Screws can be inserted into the first mounting holes 11, so that the base 10 can be fixed in the housing. The first positioning column 16 is inserted into the first hole in the housing to reinforce the limiting plate 15 and prevent the limiting plate 15 from loosening.

[0034] Preferably, a support seat 110 extends from the bottom of the base 10, and the support seat 110 has a second positioning column 111 and a second mounting hole 112. The support seat 110 is inserted into the housing, a screw is inserted into the second mounting hole 112, and the second positioning column 111 is inserted into the second hole, thereby making the assembly of the self-limiting wire adjustment mechanism very convenient.

[0035] Preferably, the outer side of the rotating shaft 21 seat 12 has a reinforcing grid 13, and the control rod 23 is penetrated with a toggle key 26. The reinforcing grid 13 can reinforce the rotating shaft 21 seat 12 to prevent its deformation. The toggle key 26 has a certain flexibility, which improves the comfort during operation.

[0036] Embodiment 2

[0037] The present application provides an endoscope, including the self-limiting wire adjustment mechanism; the base 10 is arranged and fixed in the shell, and the control rod 23 extends from the shell and can swing back and forth. When the endoscope is assembled, the control rod 23 extends from the shell, and the wire 24 can be withdrawn or released by turning the control rod 23, which is very simple.

[0038] In summary, the design focus of the utility model is that the turntable 20 is extended with a connecting arm 22 and a control rod 23. The steel wire 24 is passed through the connecting arm 22. When the turntable 20 rotates to a certain range, the connecting arm 22 will be stopped by the limit plate 15 on the base 10. This will not generate new friction, the structure is simpler, and the rotation is smoother.

[0039] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A self-limiting wire adjustment mechanism, characterized in that: It includes a base and a turntable; a rotating shaft seat is formed on the base; the turntable is arranged between the rotating shaft seats, and the rotating shaft passes through the rotating shaft seat and the turntable; an arc groove is arranged on the base, and the turntable moves in the arc groove; the turntable is provided with a connecting arm and a control rod, a steel wire is passed through the connecting arm, and the connecting arm can be stopped by a limit plate on the base.

2. A self-limiting wire adjustment mechanism according to claim 1, characterized in that: There are two connecting arms, the arc A between the two connecting arms is between 90-150 degrees, and the arc angle of the arc groove is between 30-60 degrees.

3. A self-limiting wire adjustment mechanism according to claim 1, characterized in that: The ratio of the length L of the control rod to the radius R of the turntable is between 1-1.

5.

4. A self-limiting wire adjustment mechanism according to claim 1, characterized in that: The left and right sides of the base are provided with avoidance openings, through which the steel wire passes.

5. The self-limiting wire adjustment mechanism according to claim 1, characterized in that: The base is provided with a plurality of first mounting holes, and the limiting plate is provided with a first positioning column.

6. A self-limiting wire adjustment mechanism according to claim 1 or 5, characterized in that: A support base extends from the bottom of the base, and the support base has a second positioning column and a second mounting hole.

7. The self-limiting wire adjustment mechanism according to claim 1, characterized in that: The connecting arm is provided with a rope head hole; the steel wire passes through the rope head hole, and the rope head of the steel wire is embedded in the rope head hole.

8. The self-limiting wire adjustment mechanism according to claim 1, characterized in that: The outer side of the rotating shaft seat is provided with a reinforcing grid, and the control rod is penetrated with a toggle key.

9. An endoscope, characterized in that: It comprises the self-limiting wire adjustment mechanism described in any one of claims 1 to 8; the base is arranged and fixed in a shell, and the control rod extends from the shell and can swing back and forth.

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