Rotating wheel position locking structure of endoscope handle

Abstract

The utility model relates to the technical field of endoscopes, in particular to a rotating wheel position locking structure of an endoscope handle, which comprises a connecting shell mounted on one side of the handle, a rotating shaft rotationally arranged on the handle, a rotating wheel and a locking mechanism, and the rotating wheel is positioned in the middle of the connecting shell and fixed on the surface of the rotating shaft. The locking mechanism comprises a rotating assembly, two abutting blocks, two mounting plates, two swinging assemblies and two telescopic assemblies, the abutting blocks are arranged on the two sides of the rotating wheel, the two abutting blocks can make contact with the two end faces of the rotating wheel at the same time, the contact area with the rotating wheel can be increased, friction force can be improved, and therefore the locking effect on the rotating wheel is improved; and the two abutting blocks can apply pressure to the two sides of the rotating wheel at the same time to clamp the rotating wheel, so that the locking effect on the rotating wheel can be further improved, it can be guaranteed that the position of the rotating wheel is firm after the rotating wheel is locked, and the rotating wheel is not prone to slipping.

Description

Technical Field

[0001] The utility model relates to the technical field of endoscopes, in particular to a rotating wheel position locking structure of an endoscope handle. Background Art

[0002] An endoscope is an instrument with a miniature camera that enters the body through natural orifices or small incisions. It has an optical lens and mechanical device that can observe diseased tissues.

[0003] When the endoscope is in use, when the front end of the endoscope is bent to a certain angle, in order to facilitate the doctor's observation, it is necessary to use the wheel locking structure to lock the wheel, thereby locking the angle of the front end bending, that is, ensuring that the front end snake bone can maintain a certain bending angle unchanged.

[0004] The existing wheel position locking structure of the endoscope handle generally locks the wheel by applying friction to one side of the wheel through one-side contact. However, applying friction through only one-side contact will result in poor wheel locking effect, and it is easy to cause the wheel to not be locked tightly, and the wheel cannot be clamped and locked. To address this problem, a wheel position locking structure for an endoscope handle is now provided. Utility Model Content

[0005] The purpose of the present utility model is to provide a rotating wheel position locking structure for an endoscope handle to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A rotary wheel position locking structure for an endoscope handle comprises a connecting shell mounted on one side of the handle, a hand wheel being provided on a side of the connecting shell away from the handle, a rotating shaft being rotatably provided on the handle, the other end of the rotating shaft passing through the connecting shell and being fixedly connected to the hand wheel, a rotating wheel and a locking mechanism being provided, the rotating wheel being located in the middle of the connecting shell and fixed to the surface of the rotating shaft, and the rotating shaft being rotatably connected to the connecting shell;

[0008] The locking mechanism includes a rotating assembly, two clamping blocks, two mounting plates, two swinging assemblies and two telescopic assemblies. One end of the two mounting plates is fixed to the inner wall of the connecting shell. The two mounting plates are respectively arranged on the upper and lower sides of the rotating wheel. Each clamping block is mounted on a mounting plate. Each swinging assembly is located between a clamping block and a mounting plate. Each telescopic assembly is installed on one side of a swinging assembly. The rotating assembly is located between the connecting shell and the two telescopic assemblies.

[0009] As a further solution of the present invention: the rotating assembly includes a rotating rod, a worm wheel, a worm and a driving rod, the rotating rod is rotatably set on two mounting plates, the worm wheel is fixedly mounted on one end surface of the rotating rod, the driving rod is rotatably set on the connecting shell, the worm is fixedly sleeved on the surface of the driving rod, and the worm and the worm wheel are engaged with each other.

[0010] As a further solution of the present invention: each telescopic assembly includes a cam, a vertical plate, a push rod and a wedge block. The cam is fixedly mounted on the surface of the rotating rod, the vertical plate is fixed to the surface of the mounting plate, the wedge block is located on the side of the vertical plate away from the cam, and the wedge block is slidably arranged on the mounting plate, the push rod slides on the vertical plate, one end of the push rod is fixedly connected to the wedge block, and the other end of the push rod abuts against the cam through an abutment.

[0011] As a further solution of the present invention: the abutment member includes a push plate, a ball and a first spring. The push plate is fixed to the end of the push rod away from the wedge block. The ball is installed on the side of the push plate away from the push rod. The ball fits the surface of the cam. The first spring is sleeved on the push rod. The two ends of the first spring are respectively connected to the push plate and the vertical plate.

[0012] As a further solution of the present invention: two guide rails are installed on the sides of the two mounting plates away from each other, a slider is slid inside each guide rail, and each wedge block is fixedly connected to the two sliders on one side of a mounting plate.

[0013] As a further solution of the present invention: each swing assembly includes a U-shaped frame, a rocker arm and a roller. The U-shaped frame is fixed to one end of the mounting plate close to the rotating wheel. The middle part of the rocker arm rotates on the U-shaped frame. One end of the rocker arm is fixedly connected to the tightening block. The roller rotates on the other end of the rocker arm. Elastic parts are provided on both sides of the end of the rocker arm close to the roller.

[0014] As a further solution of the present invention: the elastic member includes a side plate and a second spring, the side plate is fixedly mounted on the side surface of one end of the rocker arm, one end of the second spring is connected to the side plate, and the other end of the second spring is connected to the mounting plate.

[0015] As a further solution of the present invention: a first anti-slip convex strip is provided on the surface of each pressing block, and a second anti-slip convex strip is provided on the upper and lower ends of the rotating wheel.

[0016] As a further solution of the present invention: a disc is provided between the two mounting plates, the disc is fixed to the surface of the rotating rod, and arc grooves are provided on the side of the two mounting plates close to each other, and a rod is inserted into the inside of each arc groove, and each rod is fixed on the disc.

[0017] As a further solution of the present invention: one end of the driving rod passes through the connecting shell and is fixedly connected to a knob.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The utility model provides a rotating wheel position locking structure for an endoscope handle. By arranging abutting blocks on both sides of the rotating wheel, the two abutting blocks can contact the two end surfaces of the rotating wheel at the same time, which can increase the contact area with the rotating wheel and improve the friction force, thereby improving the locking effect of the rotating wheel. The two abutting blocks can simultaneously apply pressure to both sides of the rotating wheel to achieve clamping of the rotating wheel, thereby further improving the locking effect of the rotating wheel and ensuring that the position of the rotating wheel is firm after being locked, making it less likely for the rotating wheel to slip.

[0020] 2. The utility model provides a rotating wheel position locking structure for an endoscope handle. By turning a knob, two pressing blocks can be moved simultaneously, so that the two pressing blocks can press the rotating wheel at the same time without moving the pressing blocks separately, making the locking structure easy to operate.

[0021] 3. The utility model provides a wheel position locking structure for an endoscope handle. By setting a disc, an insert rod and an arc groove, the cam rotation angle can be limited to ensure that the cam can only rotate to a certain angle, avoiding excessive rotation angle or some influence on the locking effect of the wheel, and is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the present utility model.

[0023] Figure 2 This is a schematic diagram of the internal structure of the connecting shell in the present utility model.

[0024] Figure 3 For this utility model Figure 2 Schematic diagram of the enlarged structure of part A.

[0025] Figure 4 This is a partial structural diagram of the locking mechanism in the utility model Figure 1 .

[0026] Figure 5 For this utility model Figure 4 Schematic diagram of the enlarged structure of part B.

[0027] Figure 6 This is a partial structural diagram of the locking mechanism in the utility model Figure 1 .

[0028] Figure 7 For this utility model Figure 6 Schematic diagram of the enlarged structure of part C.

[0029] Among them: 11. handle; 12. handwheel; 13. connecting shell; 14. rotating wheel; 15. rotating shaft; 16. tightening block; 17. mounting plate; 18. U-shaped frame; 19. rocker arm; 20. roller; 21. vertical plate; 22. wedge block; 23. guide rail; 24. push rod; 25. push plate; 26. ball; 27. first spring; 28. cam; 29. ​​rotating rod; 30. side plate; 31. second spring; 32. worm gear; 33. worm; 34. driving rod; 35. knob; 36. first anti-slip ridge; 37. second anti-slip ridge; 38. disc; 39. plug rod; 40. arc groove. DETAILED DESCRIPTION

[0030] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0031] The present invention provides the following preferred embodiments:

[0032] Example 1, as Figure 1-Figure 7 As shown, a rotary wheel position locking structure of an endoscope handle includes a connecting shell 13 installed on one side of the handle 11, a hand wheel 12 is provided on the side of the connecting shell 13 away from the handle 11, a rotating shaft 15 is rotatably provided on the handle 11, the other end of the rotating shaft 15 passes through the connecting shell 13 and is fixedly connected to the hand wheel 12, and further includes a rotating wheel 14 and a locking mechanism, the rotating wheel 14 is located in the middle of the connecting shell 13 and is fixed to the surface of the rotating shaft 15, and the rotating shaft 15 is rotatably connected to the connecting shell 13. When it is necessary to lock the hand wheel 12 to ensure that the bending angle of the front end of the endoscope remains unchanged, the rotating wheel 14 is locked by the locking mechanism to prevent the rotating wheel 14 from rotating, thereby preventing the bending angle of the front end of the endoscope from remaining unchanged;

[0033] The locking mechanism includes a rotating assembly, two abutting blocks 16, two mounting plates 17, two swinging assemblies and two telescopic assemblies. One end of the two mounting plates 17 is fixed to the inner wall of the connecting shell 13. The two mounting plates 17 are respectively arranged on the upper and lower sides of the rotating wheel 14. Each abutting block 16 is mounted on a mounting plate 17. The two abutting blocks 16 are respectively located on the upper and lower sides of the rotating wheel 14. Each swinging assembly is located between a abutting block 16 and a mounting plate 17. Each telescopic assembly is installed on one side of a swinging assembly. The rotating assembly is located between the connecting shell 13 and the two telescopic assemblies.

[0034] When the rotating wheel 14 needs to be locked, the rotating assembly can synchronously drive the two telescopic assemblies to work, so that the two swing assemblies can drive the two clamping blocks 16 to swing simultaneously, so that the two clamping blocks 16 can move toward the position of the rotating wheel 14, thereby achieving the clamping and fixing of the rotating wheel 14;

[0035] The two clamping blocks 16 can contact the two end surfaces of the wheel 14 at the same time, which can increase the contact area with the wheel 14 and improve the friction force, thereby improving the locking effect of the wheel 14. The two clamping blocks 16 can also apply pressure to both sides of the wheel 14 at the same time to achieve clamping of the wheel 14, thereby further improving the locking effect of the wheel 14 and ensuring that the wheel 14 is firmly positioned after being locked, making it less likely for the wheel 14 to slip.

[0036] like Figure 1-Figure 7 As shown, the rotating assembly includes a rotating rod 29, a worm wheel 32, a worm 33 and a driving rod 34. The rotating rod 29 is rotatably mounted on the two mounting plates 17. The worm wheel 32 is fixedly mounted on one end surface of the rotating rod 29. The driving rod 34 is rotatably mounted on the connecting housing 13. The worm 33 is fixedly sleeved on the surface of the driving rod 34. The worm 33 and the worm wheel 32 are engaged with each other.

[0037] When the rotating wheel 14 needs to be locked, the driving rod 34 is rotated, and the driving rod 34 can drive the worm 33 to rotate. Since the worm 33 and the worm wheel 32 are engaged with each other, when the worm 33 rotates, it can drive the worm wheel 32 to rotate, so that the rotating rod 29 can be rotated.

[0038] like Figure 1-Figure 7 As shown, each telescopic assembly includes a cam 28, a vertical plate 21, a push rod 24 and a wedge block 22. The cam 28 is fixedly mounted on the surface of the rotating rod 29. The vertical plate 21 is fixed to the surface of the mounting plate 17. The wedge block 22 is located on the side of the vertical plate 21 away from the cam 28, and the wedge block 22 is slidably arranged on the mounting plate 17. The push rod 24 slides on the vertical plate 21. One end of the push rod 24 is fixedly connected to the wedge block 22, and the other end of the push rod 24 abuts against the cam 28 through an abutment member.

[0039] When the rotating rod 29 rotates, it can drive the cam 28 to rotate synchronously.

[0040] like Figure 1-Figure 7 As shown, the abutment member includes a push plate 25, a ball 26 and a first spring 27. The push plate 25 is fixed to the end of the push rod 24 away from the wedge block 22. The ball 26 is installed on the side of the push plate 25 away from the push rod 24. The ball 26 is in contact with the surface of the cam 28. The first spring 27 is sleeved on the push rod 24. The two ends of the first spring 27 are respectively connected to the push plate 25 and the vertical plate 21.

[0041] In the initial state, the first spring 27 is in a natural state. When the rotating rod 29 drives the cam 28 to rotate, the cam 28 can apply a thrust to the ball 26, so that the push plate 25 drives the push rod 24 to move toward the side away from the cam 28. The first spring 27 is compressed, and the push rod 24 can drive the wedge block 22 to move toward the side away from the cam 28 when moving.

[0042] like Figure 1-Figure 7 As shown, two guide rails 23 are installed on the side of the two mounting plates 17 away from each other, and a slider is sliding inside each guide rail 23. Each wedge block 22 is fixedly connected to the two sliders on one side of a mounting plate 17. The sliding connection between the guide rails 23 and the sliders can achieve a guiding effect on the wedge block 22, so that the wedge block 22 can slide smoothly on the mounting plate 17.

[0043] like Figure 1-Figure 7 As shown, each swing assembly includes a U-shaped frame 18, a rocker arm 19 and a roller 20. The U-shaped frame 18 is fixed to one end of the mounting plate 17 close to the rotating wheel 14. The middle part of the rocker arm 19 rotates on the U-shaped frame 18. One end of the rocker arm 19 is fixedly connected to the abutting block 16. The roller 20 rotates on the other end of the rocker arm 19. Elastic members are provided on both sides of the end of the rocker arm 19 close to the roller 20.

[0044] When the swing rod 19 rotates on the U-shaped frame 18 , the abutting block 16 at one end of the swing rod 19 can be driven to rotate, so that the abutting block 16 can move closer to or farther away from the rotating wheel 14 , thereby locking or unlocking the rotating wheel 14 .

[0045] like Figure 1-Figure 7 As shown, the elastic member includes a side plate 30 and a second spring 31. The side plate 30 is fixedly mounted on one end side of the rocker 19. One end of the second spring 31 is connected to the side plate 30, and the other end of the second spring 31 is connected to the mounting plate 17.

[0046] In the initial state, the second spring 31 is in a natural state, and the roller 20 abuts against the surface of the wedge block 22;

[0047] When the wedge block 22 moves toward the side away from the cam 28, the roller 20 can roll on the wedge block 22. Therefore, when the wedge block 22 moves, it can drive the rocker 19 to rotate. At this time, the second spring 31 is stretched, and the pressing block 16 moves toward the direction close to the rotating wheel 14 as the rocker 19 rotates and contacts the rotating wheel 14, thereby pressing against the rotating wheel 14 and locking the rotating wheel 14.

[0048] When it is necessary to unlock the rotating wheel 14, the driving rod 34 is rotated in the opposite direction. The driving rod 34 can drive the rotating rod 29 to rotate in the opposite direction through the worm gear 32 and the worm 33, so that the cam 28 can rotate in the opposite direction. At this time, under the action of the first spring 27, the wedge block 22 can be driven to reset, and the Shudie wedge block 22 can move toward the side close to the cam 28. At this time, under the action of the second spring 31, the rocker arm 19 can be driven to rotate in the opposite direction, so that the clamping block 16 can move toward the side away from the rotating wheel 14, so that the rotating wheel 14 does not contact the clamping block 16, and the lock of the rotating wheel 14 is released.

[0049] like Figure 1-Figure 7As shown, the surface of each clamping block 16 is provided with a first anti-slip ridge 36, and the upper and lower ends of the rotating wheel 14 are provided with a second anti-slip ridge 37. The first anti-slip ridge 36 and the second anti-slip ridge 37 can further increase the friction force when the clamping block 16 and the rotating wheel 14 are in contact, and further improve the locking effect of the rotating wheel 14. Preferably, the second anti-slip ridge 37 and the first anti-slip ridge 36 are both made of rubber material.

[0050] like Figure 1-Figure 7 As shown, a disc 38 is provided between the two mounting plates 17, and the disc 38 is fixed to the surface of the rotating rod 29. An arc groove 40 is provided on the side of the two mounting plates 17 close to each other, and an insertion rod 39 is inserted into the interior of each arc groove 40, and each insertion rod 39 is fixed to the disc 38;

[0051] When the rotating rod 29 rotates, it can drive the disc 38 to rotate, so that the insertion rod 39 can slide inside the arc groove 40. The arc groove 40 can limit the rotation angle of the cam 28, ensuring that the cam 28 can only rotate 180 degrees of the U-shaped frame, avoiding excessive rotation angle or affecting the locking effect of the rotating wheel 14 to a certain extent, which is convenient to use.

[0052] like Figure 1-Figure 7 As shown, one end of the driving rod 34 passes through the connecting shell 13 and is fixedly connected to a knob 35 . The setting of the knob 35 makes it convenient for the user to rotate the driving rod 34 .

[0053] The beneficial effects of the present invention are specifically embodied in that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rotary wheel position locking structure for an endoscope handle, comprising a connecting shell (13) mounted on one side of a handle (11), a hand wheel (12) being provided on a side of the connecting shell (13) away from the handle (11), a rotating shaft (15) being rotatably provided on the handle (11), the other end of the rotating shaft (15) passing through the connecting shell (13) and being fixedly connected to the hand wheel (12), characterized in that: It also includes a rotating wheel (14) and a locking mechanism, wherein the rotating wheel (14) is located in the middle of the connecting shell (13) and the rotating wheel (14) is fixed on the surface of the rotating shaft (15), and the rotating shaft (15) and the connecting shell (13) are rotatably connected; The locking mechanism comprises a rotating assembly, two abutting blocks (16), two mounting plates (17), two swinging assemblies and two telescopic assemblies, one end of each of the two mounting plates (17) is fixed to the inner wall of the connecting shell (13), the two mounting plates (17) are respectively arranged on the upper and lower sides of the rotating wheel (14), each abutting block (16) is mounted on a mounting plate (17), each swinging assembly is located between abutting block (16) and a mounting plate (17), each telescopic assembly is installed on one side of a swinging assembly, and the rotating assembly is located between the connecting shell (13) and the two telescopic assemblies.

2. The wheel position locking structure of an endoscope handle according to claim 1, characterized in that: The rotating assembly comprises a rotating rod (29), a worm wheel (32), a worm (33) and a driving rod (34). The rotating rod (29) is rotatably mounted on two mounting plates (17). The worm wheel (32) is fixedly mounted on one end surface of the rotating rod (29). The driving rod (34) is rotatably mounted on a connecting shell (13). The worm (33) is fixedly sleeved on the surface of the driving rod (34). The worm (33) and the worm wheel (32) are meshed with each other.

3. The wheel position locking structure of an endoscope handle according to claim 2, characterized in that: Each telescopic assembly comprises a cam (28), a vertical plate (21), a push rod (24) and a wedge block (22); the cam (28) is fixedly mounted on the surface of the rotating rod (29); the vertical plate (21) is fixed to the surface of the mounting plate (17); the wedge block (22) is located on the side of the vertical plate (21) away from the cam (28); and the wedge block (22) is slidably arranged on the mounting plate (17); the push rod (24) slides on the vertical plate (21); one end of the push rod (24) is fixedly connected to the wedge block (22); and the other end of the push rod (24) abuts against the cam (28) through an abutment member.

4. The wheel position locking structure of an endoscope handle according to claim 3, characterized in that: The abutment member includes a push plate (25), a ball (26) and a first spring (27). The push plate (25) is fixed to one end of the push rod (24) away from the wedge block (22). The ball (26) is installed on the side of the push plate (25) away from the push rod (24). The ball (26) is in contact with the surface of the cam (28). The first spring (27) is sleeved on the push rod (24). The two ends of the first spring (27) are respectively connected to the push plate (25) and the vertical plate (21).

5. The wheel position locking structure of an endoscope handle according to claim 4, characterized in that: Two guide rails (23) are installed on the sides of the two mounting plates (17) away from each other. A slider slides inside each guide rail (23). Each wedge block (22) is fixedly connected to the two sliders on one side of a mounting plate (17).

6. The wheel position locking structure of an endoscope handle according to claim 5, characterized in that: Each swing assembly comprises a U-shaped frame (18), a swing rod (19) and a roller (20). The U-shaped frame (18) is fixed to one end of the mounting plate (17) close to the rotating wheel (14). The middle part of the swing rod (19) rotates on the U-shaped frame (18). One end of the swing rod (19) is fixedly connected to the abutting block (16). The roller (20) rotates on the other end of the swing rod (19). Elastic members are provided on both sides of one end of the swing rod (19) close to the roller (20).

7. The wheel position locking structure of an endoscope handle according to claim 6, characterized in that: The elastic member includes a side plate (30) and a second spring (31), wherein the side plate (30) is fixedly mounted on the side surface of one end of the rocker (19), one end of the second spring (31) is connected to the side plate (30), and the other end of the second spring (31) is connected to the mounting plate (17).

8. The wheel position locking structure of an endoscope handle according to claim 7, characterized in that: The surface of each pressing block (16) is provided with a first anti-slip convex strip (36), and the upper and lower ends of the rotating wheel (14) are provided with a second anti-slip convex strip (37).

9. The wheel position locking structure of an endoscope handle according to claim 8, characterized in that: A disc (38) is provided between the two mounting plates (17), and the disc (38) is fixed to the surface of the rotating rod (29). An arc groove (40) is provided on one side of the two mounting plates (17) close to each other, and an insertion rod (39) is inserted into the interior of each arc groove (40), and each insertion rod (39) is fixed on the disc (38).

10. The wheel position locking structure of an endoscope handle according to claim 9, characterized in that: One end of the driving rod (34) passes through the connecting shell (13) and is fixedly connected to a knob (35).

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