Brake device and endoscope equipment

Abstract

The utility model provides a braking device and endoscope equipment. The braking device comprises a shell, a supporting base, a lifting rod, a rotary knob and a braking assembly, and the supporting base is installed on the shell; the lifting rod is mounted on the supporting seat in a lifting manner; the knob is rotatably installed on the shell and drives the lifting rod to ascend and descend relative to the supporting base. The brake assembly comprises a first brake pad, the first brake pad is arranged on one side of the rotary knob, and the first brake pad moves relative to the rotary knob and is in contact with or separated from the rotary knob; when the first brake pad makes contact with the rotary knob, the first brake pad applies braking force to the rotary knob and brakes lifting of the lifting rod, so that the first brake pad is additionally arranged to brake the rotary knob, the braking assembly is fully utilized, the situation that the rotary knob cannot be braked in time in the rotating process is avoided, and the braking effect of the braking device is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of endoscope equipment, in particular to a braking device and endoscope equipment. Background Art

[0002] With the development of science and technology, endoscopes are optical instruments. In the prior art, existing endoscopes include a housing, a support base, a lifting rod, and a knob. The support base is mounted on the housing; the lifting rod is mounted on the support base so as to be liftable; and the knob is rotatably mounted on the housing to drive the lifting rod to rise and fall relative to the support base. However, the knob cannot be braked in time during rotation, resulting in poor braking effect of the existing endoscopes. Utility Model Content

[0003] The purpose of the present utility model is to provide a braking device and an endoscope device, wherein a support seat is installed on a shell; a lifting rod is installed on the support seat in a liftable manner; a knob is rotatably installed on the shell and drives the lifting rod to move up and down relative to the support seat; the braking assembly includes a first brake pad, which is arranged on one side of the knob, and the first brake pad moves relative to the knob and contacts or disengages from the knob; when the first brake pad contacts the knob, the first brake pad applies a braking force to the knob and brakes the lifting and lowering of the lifting rod, so as to increase the first brake pad to realize braking of the knob, and make full use of the braking assembly, thereby avoiding the knob from being unable to brake in time during rotation, and ensuring the braking effect of the braking device.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A braking device is applied to an endoscope device; the braking device comprises:

[0006] shell;

[0007] A support base, mounted on the housing;

[0008] A lifting rod, mounted on the support base in a liftable manner;

[0009] A knob is rotatably mounted on the housing and drives the lifting rod to move up and down relative to the support base;

[0010] The brake assembly includes a first brake pad, which is arranged on one side of the knob. The first brake pad moves relative to the knob and contacts or disengages from the knob. When the first brake pad contacts the knob, the first brake pad applies braking force to the knob and brakes the lifting and lowering of the lifting rod.

[0011] Optionally, the knob includes a knob operating portion and a knob rotating shaft;

[0012] The knob rotating shaft is connected to the knob operating portion, and the lifting rod is lifted and lowered relative to the support base as the knob rotating shaft rotates;

[0013] The first brake piece is movably arranged to pass through the knob rotation shaft.

[0014] Optionally, the brake assembly further includes a brake moving seat;

[0015] The brake movable seat is arranged on one side of the first brake pad. The brake movable seat movably passes through the knob rotation shaft and drives the first brake pad to contact or move away from the knob.

[0016] Optionally, the brake assembly further includes a brake guide ring;

[0017] The brake guide ring is mounted on the housing;

[0018] The brake movable seat is sleeved on the brake guide ring. The brake movable seat is rotatably connected to the brake guide ring and drives the first brake pad to move during the rotation process.

[0019] Optionally, the braking guide ring is provided with a spiral track groove, and the spiral track groove is spirally arranged along the circumferential side wall of the braking guide ring;

[0020] The brake movable seat is provided with a movable boss, and the movable boss is inserted into the spiral track groove. During the rotation process, the brake movable seat drives the movable boss to contact different positions of the spiral track groove and drives the movement of the first brake pad;

[0021] Alternatively, the brake guide ring is provided with an external thread portion, which is spirally arranged along the circumferential side wall of the brake guide ring; the brake movable seat is provided with an internal thread portion, which is engaged with the external thread portion.

[0022] Optionally, the brake movable seat is provided with a brake dial button portion, the operating end of the brake dial button portion is located on the outer side wall of the knob and is exposed to the external environment; the brake dial button portion is used for the user to dial along the arc direction.

[0023] Optionally, the brake assembly also includes a second brake pad, which is arranged on the other side of the knob. The second brake pad moves relative to the knob and contacts or disengages from the knob; when the first brake pad contacts the knob, the second brake pad applies braking force to the knob and brakes the lifting and lowering of the lifting rod.

[0024] Optionally, the brake assembly further includes a brake knob; the brake knob is arranged on one side of the second brake pad, and the brake knob is movably provided through the knob rotating shaft, and drives the second brake pad to contact or move away from the knob.

[0025] Optionally, the lifting rod is provided with a rack portion; the rack portion is arranged on the lifting rod in the up-down direction, the lifting rod is provided with a plurality of lifting rods, and two lifting rods form a group;

[0026] The knob is provided with a gear, which is arranged between the two lifting rods and can be engaged with the rack portion; the gear rotates as the knob is rotated, and drives the two lifting rods to rise and fall in opposite directions relative to the support base.

[0027] An endoscope device comprises the braking device.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] The utility model provides a braking device and an endoscope device, wherein a support seat is installed on a shell; a lifting rod is installed on the support seat in a liftable manner; a knob is rotatably installed on the shell and drives the lifting rod to move up and down relative to the support seat; the braking assembly includes a first brake pad, the first brake pad is arranged on one side of the knob, the first brake pad moves relative to the knob, and contacts or disengages from the knob; when the first brake pad contacts the knob, the first brake pad applies a braking force to the knob and brakes the lifting and lowering of the lifting rod, so as to increase the first brake pad to realize braking of the knob, and make full use of the braking assembly, avoid the knob from being unable to brake in time during rotation, and ensure the braking effect of the braking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0031] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.

[0032] Figure 1 A schematic diagram of the braking device of the present invention is shown.

[0033] Figure 2 A cross-sectional view showing the braking device of the present invention

[0034] Figure 3Another cross-sectional view of the braking device of the present invention is shown.

[0035] Figure 4 A schematic diagram showing the connection between the knob and the brake assembly of the brake device of the present invention is shown.

[0036] Figure 5 A cross-sectional view showing the connection between the knob and the brake assembly of the brake device of the present invention is shown.

[0037] Figure 6 An exploded view of the first brake pad, the brake moving seat, and the brake guide ring of the brake device of the first embodiment is shown.

[0038] Figure 7 An exploded view of the braking device of the present invention is shown.

[0039] Figure 8 A connection cross-sectional view of a brake movable seat and a brake guide ring of a brake device according to a second embodiment is shown.

[0040] Reference numerals

[0041] 100. Braking device;

[0042] 10. Shell;

[0043] 20. Support seat; 20a. Lifting hole;

[0044] 30. Lifting rod; 31. Rack;

[0045] 40. Knob; 41. Knob operating portion; 42. Knob rotation shaft; 421. Gear; 43. First sub-knob; 44. Second sub-knob;

[0046] 50. Brake assembly; 51. First brake pad; 52. Brake movable seat; 521. Movable boss; 522. Brake dial button; 523. Internally threaded portion; 53. Brake guide ring; 53a. Spiral track groove; 531. Externally threaded portion; 54. Second brake pad; 55. Brake knob;

[0047] 60. Guide piece; 61. Copper sleeve. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0049] Please refer to the attached Figure 1An embodiment of the present application provides a braking device 100 , which is applied to an endoscope device and is used to brake a knob 40 .

[0050] Please refer to the attached Figures 1-2 In the present invention, the braking device 100 includes a housing 10, a support base 20, a lifting rod 30, a knob 40 and a braking assembly 50. The support base 20 is arranged on the inner side of the housing 10, the lifting rod 30 is arranged on the inner side of the support base 20, the knob 40 is arranged on the outer side of the housing 10, and the braking assembly 50 is arranged on the inner side of the knob 40. The support base 20 is installed on the housing 10; the lifting rod 30 is installed on the support base 20 in a liftable manner; the knob 40 is rotatably installed on the housing and drives the lifting rod 30 to move up and down relative to the support base 20; the braking assembly 50 0 includes a first brake pad 51, which is arranged on one side of the knob 40. The first brake pad 51 moves relative to the knob 40 and contacts or disengages from the knob 40. When the first brake pad 51 contacts the knob 40, the first brake pad 51 applies a braking force to the knob 40 and brakes the lifting and lowering of the lifting rod 30. In this way, the first brake pad 51 is added to brake the knob 40 and fully utilize the brake assembly 50, thereby avoiding the inability to brake the knob 40 in time during the rotation process, thereby ensuring the braking effect of the brake device 100.

[0051] Please refer to the attached Figures 1-2 In the present invention, the housing 10 serves as a supporting component of the braking device 100 , and the housing 10 is used to support the supporting seat 20 , the lifting rod 30 , the knob 40 and the braking assembly 50 .

[0052] Please refer to the attached Figures 1 to 3 In the present invention, the support base 20 is arranged on the inner side of the shell 10 , and the support base 20 is installed on the shell 10 so that the support base 20 is fixed on the inner side of the shell 10 .

[0053] Please refer to the attached Figures 1-2 In the present invention, the lifting rod 30 is arranged on the inner side of the support base 20, and the lifting rod 30 is arranged in the vertical direction. The lifting rod 30 can be installed on the support base 20 in a liftable manner to facilitate adjusting the position of the lifting rod 30 relative to the support base 20.

[0054] Please refer to the attached Figures 1 to 5 In the present invention, the knob 40 is arranged on the outside of the shell 10, and the knob 40 is rotatably mounted on the shell to adjust the position of the knob 40 relative to the shell 10. The knob 40 drives the lifting rod 30 to rise and fall relative to the support base 20, so that the lifting rod 30 can be lifted and lowered during the rotation of the knob 40.

[0055] Please refer to the attached Figures 1 to 5The knob 40 includes a knob operating portion 41 and a knob rotating shaft 42; the knob operating portion 41 is in the external environment of the housing 10, and the knob operating portion 41 is used for user operation, so that the user can rotate the knob operating portion 41 under the action of external force to realize the rotation of the knob 40 relative to the housing 10, and the knob rotating shaft 42 is connected to the knob operating portion 41 and passes through the support seat 20. The lifting rod 30 is lifted and lowered relative to the support seat 20 as the knob rotating shaft 42 rotates, so that the knob 40 can drive the lifting rod 30 to move up and down through the knob rotating shaft 42; the first brake pad 51 is movably passed through the knob rotating shaft 42 to facilitate adjustment of the position of the first brake pad 51 relative to the knob rotating shaft 42, so as to facilitate the first brake pad 51 to contact or disengage from the knob operating portion 41. When the first brake pad 51 contacts the knob operating portion 41, the first brake pad 51 applies a braking force to the knob operating portion 41 and brakes the lifting and lowering of the lifting rod 30.

[0056] Please refer to the attached Figures 1 to 5 The knob 40 includes a first sub-knob 43 and a second sub-knob 44. The first sub-knob 43 and the second sub-knob 44 are arranged at intervals along the length direction of the knob rotating shaft 42. There are four lifting rods 30, two lifting rods 30 form a group, and the first sub-knob 43 and the second sub-knob 44 respectively control the two groups of lifting rods 30 separately.

[0057] Please refer to the attached Figures 1 to 5 In the present invention, the brake assembly 50 includes a first brake pad 51, which is arranged on the inner side of the first sub-knob 43. The first brake pad 51 moves relative to the first sub-knob 43 and contacts or disengages from the first sub-knob 43; when the first brake pad 51 contacts the first sub-knob 43, the first brake pad 51 applies a braking force to the first sub-knob 43 and brakes the lifting and lowering of a group of lifting rods 30, so as to increase the first brake pad 51 to brake the first sub-knob 43 and make full use of the brake assembly 50, thereby avoiding the first sub-knob 43 from being unable to brake in time during the rotation process, ensuring the braking effect of the brake device 100, and when the first brake pad 51 disengages from the first sub-knob 43, the first sub-knob 43 can be rotated under the action of external force.

[0058] Please refer to the attached Figures 1 to 5 The brake assembly 50 also includes a brake moving seat 52; the brake moving seat 52 is arranged on the outside of the first brake pad 51, and the first brake pad 51 is connected to the brake moving seat 52. The brake moving seat 52 is movably provided with the knob rotating shaft 42 to facilitate adjustment of the position of the brake moving seat 52 relative to the knob rotating shaft 42. The brake moving seat 52 drives the first brake pad 51 to contact or move away from the first sub-knob 43, so that the first brake pad 51 contacts or moves away from the first sub-knob 43 through the movement of the brake moving seat 52.

[0059] Please refer to the attached Figures 1 to 6 The brake assembly 50 also includes a brake guide ring 53; the brake guide ring 53 is installed on the housing 10 so that the brake guide ring 53 is fixed to the housing 10; the brake moving seat 52 is sleeved on the brake guide ring 53, and the brake moving seat 52 is rotatably connected to the brake guide ring 53 to facilitate adjustment of the position of the brake moving seat 52 relative to the brake guide ring 53, so that the brake moving seat 52 can be moved relative to the knob rotation axis 42 through the brake guide ring 53, and the brake moving seat 52 drives the movement of the first brake pad 51 during the rotation process, so that the first brake pad 51 contacts or moves away from the first sub-knob 43 during the movement.

[0060] Please refer to the attached Figure 6 In the first embodiment, the brake guide ring 53 is provided with a spiral track groove 53a, and the spiral track groove 53a is spirally arranged along the circumferential side wall of the brake guide ring 53; the brake moving seat 52 is provided with a movable boss 521, and the outer contour of the movable boss 521 is clearance-matched with the inner contour of the spiral track groove 53a, and the movable boss 521 is inserted into the spiral track groove 53a. During the rotation process, the brake moving seat 52 drives the movable boss 521 to contact different positions of the spiral track groove 53a, so that the brake moving seat 52 can rotate relative to the brake guide ring 53 through the cooperation of the movable boss 521 and the spiral track groove 53a. The brake moving seat 52 drives the movement of the first brake pad 51, so that the first brake pad 51 contacts or moves away from the first sub-knob 43 during the movement.

[0061] Please refer to the attached Figure 8 In the second embodiment, the brake guide ring 53 is provided with an external thread portion 531, and the external thread is spirally arranged along the circumferential side wall of the brake guide ring 53; the brake moving seat 52 is provided with an internal thread portion 523, and the internal thread portion 523 is engaged with the external thread portion 531. During the rotation process, the brake moving seat 52 drives the internal thread portion 523 to contact different positions of the external thread portion 531, so that the brake moving seat 52 can rotate relative to the brake guide ring 53 through the cooperation of the internal thread portion 523 and the external thread portion 531. The brake moving seat 52 drives the movement of the first brake pad 51, so that the first brake pad 51 contacts or moves away from the first sub-knob 43 during the movement.

[0062] Please refer to the attached Figures 1 to 5 The brake movable seat 52 is provided with a protruding brake dial button portion 522, and the operating end of the brake dial button portion 522 is located on the outer side wall of the first sub-knob 43 and is exposed to the external environment; the brake dial button portion 522 is used for the user to dial along the arc direction, so that the user can dial the brake dial button portion 522 in the external environment to brake the first sub-knob 43, thereby improving the braking convenience of the braking device 100.

[0063] Please refer to the attached Figures 1 to 5The brake assembly 50 also includes a second brake pad 54, which is arranged on the other side of the second sub-knob 44. The second brake pad 54 moves relative to the second sub-knob 44 and contacts or disengages from the second sub-knob 44; when the first brake pad 51 contacts the second sub-knob 44, the second brake pad 54 applies a braking force to the second sub-knob 44 and brakes the lifting and lowering of the other set of lifting rods 30, so that the second brake pad 54 brakes the second sub-knob 44, further improving the braking effect of the brake assembly 50 on the second sub-knob 44.

[0064] Please refer to the attached Figures 1 to 5 The brake assembly 50 also includes a brake knob 55; the brake knob 55 is arranged on the outside of the second brake pad 54, and the brake knob 55 is movably provided with a knob rotating shaft 42 to facilitate adjustment of the position of the brake knob 55 relative to the knob rotating shaft 42. The brake knob 55 drives the second brake pad 54 to contact or move away from the second sub-knob 44, so that the second brake pad 54 contacts or moves away from the second sub-knob 44 as the brake knob 55 moves. When the second brake pad 54 contacts the second sub-knob 44, the second brake pad 54 applies a braking force to the second sub-knob 44 to achieve braking of the lifting and lowering of another set of lifting rods 30.

[0065] Please refer to the attached Figures 1 to 5 The brake knob 55 is screwed to the threaded portion of the knob rotating shaft 42 so that the brake knob 55 can move relative to the knob rotating shaft 42 through the thread, thereby facilitating the brake knob 55 to drive the second brake pad 54 to contact or move away from the second sub-knob 44.

[0066] Please refer to the attached Figure 7 The lifting rod 30 is provided with a rack portion 31; the rack portion 31 is arranged on the lifting rod 30 in the up and down direction; the knob rotating shaft 42 is connected to the gear 421; the two lifting rods 30 are respectively arranged on both sides of the gear 421, and are simultaneously engaged with the gear 421 through the rack portion 31; the gear 421 rotates with the rotation of the knob rotating shaft 42, and drives the two lifting rods 30 to lift and lower in the opposite direction relative to the support base 20, so as to realize the reverse lifting of the two lifting rods 30, and make full use of the gear 421 and the rack portion 31, ensuring the lifting effect of the lifting rod 30 relative to the support base 20.

[0067] Please refer to the attached Figure 7 The support seat 20 is provided with a lifting hole 20a, and the lifting hole 20a is arranged in the up and down direction; the lifting rod 30 passes through the lifting hole 20a and is lifted and lowered in the up and down direction to facilitate adjustment of the height position of the lifting rod 30 relative to the lifting hole 20a, thereby facilitating the lifting rod 30 to be lifted and lowered relative to the support seat 20 through the space of the lifting hole 20a.

[0068] Please refer to the attached Figure 7There are four lifting holes 20a, and the lifting holes 20a are arranged corresponding to the lifting rods 30, so that the four lifting rods 30 can be lifted and lowered relative to the four lifting holes 20a. The rack portion 31 is arranged along the peripheral side wall of the lifting rod 30, so that a gear 42 drives the two lifting rods 30 to lift and lower in opposite directions, thereby improving the lifting effect of the lifting rod 30 relative to the support base 20.

[0069] Please refer to the attached Figure 7 The two lifting rods 30 form a group, and there are two groups in total. The gears 42 have two, and the two gears 42 respectively drive the two groups of lifting rods 30 to perform reverse lifting.

[0070] Please refer to the attached Figure 7 Optionally, the braking device 100 further includes a guide member 60, which is arranged in the vertical direction. The guide member 60 is built into the lifting hole 20a and is passed through by the lifting rod 30; the lifting rod 30 is lifted and lowered under the guidance of the guide member 60, thereby improving the lifting smoothness of the lifting rod 30 relative to the lifting hole 20a and ensuring the lifting effect of the lifting rod 30 relative to the lifting hole 20a.

[0071] Please refer to the attached Figure 7 The guide member 60 includes a copper sleeve 61, which is arranged in the vertical direction. The copper sleeve 61 is sleeved on the lifting hole 20a and is tightly connected to the inner wall of the lifting hole 20a; the outer wall of the copper sleeve 61 and the inner wall of the lifting hole 20a are interference fit so that the outer wall of the copper sleeve 61 contacts the inner wall of the lifting hole 20a to achieve a fixed state of the copper sleeve 61 relative to the lifting hole 20a. The lifting rod 30 can be lifted and lowered through the copper sleeve 61 so that the lifting rod 30 can be lifted and lowered under the guidance of the copper sleeve 61, thereby facilitating the lifting rod 30 to be lifted and lowered under the guidance of the guide member 60 through the copper sleeve 61.

[0072] Please refer to the attached Figure 7 The guide member 60 also includes a plurality of balls 62, which are rotatably mounted on the copper sleeve 61 to facilitate adjustment of the positions of the plurality of balls 62 relative to the copper sleeve 61. The plurality of balls 62 are in rolling contact with the lifting rod 30, so that the plurality of balls 62 rotate as the lifting rod 30 is lifted or lowered, thereby improving the lifting smoothness of the lifting rod 30.

[0073] Please refer to the attached Figure 7 A plurality of balls 62 are arranged at intervals along the length direction and the annular direction of the copper sleeve 61, and act on different positions of the lifting rod 30. By arranging a plurality of balls 62, the guiding range of the guide member 60 relative to the lifting rod 30 is increased, thereby facilitating increasing the guiding effect of the guide member 60 relative to the lifting rod 30.

[0074] In the third embodiment, an endoscope apparatus includes the braking device 100 as a part of the endoscope apparatus, and the endoscope apparatus can easily visually detect living body information that cannot be obtained from a normal observation image.

[0075] Compared with the prior art, the beneficial effects of the present invention are:

[0076] The utility model provides a braking device 100 and an endoscope device, wherein a support seat 20 is installed on a housing 10; a lifting rod 30 is installed on the support seat 20 in a liftable manner; a knob 40 is rotatably installed on the housing, and drives the lifting rod 30 to move up and down relative to the support seat 20; a braking assembly 50 includes a first brake pad 51, and the first brake pad 51 is arranged on one side of the knob 40, and the first brake pad 51 moves relative to the knob 40 and contacts or disengages from the knob 40; when the first brake pad 51 contacts the knob 40, the first brake pad 51 applies a braking force to the knob 40 and brakes the lifting and lowering of the lifting rod 30, so as to increase the first brake pad 51 to realize braking of the knob 40, and make full use of the brake assembly 50, thereby avoiding the knob 40 from being unable to brake in time during rotation, and ensuring the braking effect of the braking device 100.

[0077] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0078] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more features.

[0079] This document uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for technical personnel in this field, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on this application.

Claims

1. A braking device, characterized in that: Applicable to endoscope equipment; the braking device includes: shell; A support base, mounted on the housing; A lifting rod, mounted on the support base in a liftable manner; A knob is rotatably mounted on the housing and drives the lifting rod to move up and down relative to the support base; The brake assembly includes a first brake pad, which is arranged on one side of the knob. The first brake pad moves relative to the knob and contacts or disengages from the knob. When the first brake pad contacts the knob, the first brake pad applies braking force to the knob and brakes the lifting and lowering of the lifting rod.

2. The braking device according to claim 1, characterized in that The knob includes a knob operating portion and a knob rotating shaft; The knob rotating shaft is connected to the knob operating portion, and the lifting rod is lifted and lowered relative to the support base as the knob rotating shaft rotates; The first brake piece is movably arranged to pass through the knob rotation shaft.

3. The braking device according to claim 2, characterized in that The brake assembly also includes a brake moving seat; The brake movable seat is arranged on one side of the first brake pad. The brake movable seat movably passes through the knob rotation shaft and drives the first brake pad to contact or move away from the knob.

4. The braking device according to claim 3, characterized in that The brake assembly also includes a brake guide ring; The brake guide ring is mounted on the housing; The brake movable seat is sleeved on the brake guide ring. The brake movable seat is rotatably connected to the brake guide ring and drives the first brake pad to move during the rotation process.

5. The braking device according to claim 4, characterized in that The braking guide ring is provided with a spiral track groove, and the spiral track groove is spirally arranged along the peripheral side wall of the braking guide ring; The brake movable seat is provided with a movable boss, and the movable boss is inserted into the spiral track groove. During the rotation process, the brake movable seat drives the movable boss to contact different positions of the spiral track groove and drives the movement of the first brake pad; Alternatively, the brake guide ring is provided with an external thread portion, which is spirally arranged along the circumferential side wall of the brake guide ring; the brake movable seat is provided with an internal thread portion, which is engaged with the external thread portion.

6. The braking device according to claim 3, characterized in that The brake movable seat is convexly provided with a brake dial button portion, the operating end of the brake dial button portion is located on the outer side wall of the knob and is exposed to the external environment; the brake dial button portion is used for the user to dial along the arc direction.

7. The braking device according to any one of claims 2 to 6, characterized in that: The brake assembly also includes a second brake pad, which is arranged on the other side of the knob. The second brake pad moves relative to the knob and contacts or disengages from the knob. When the first brake pad contacts the knob, the second brake pad applies braking force to the knob and brakes the lifting and lowering of the lifting rod.

8. The braking device according to claim 7, characterized in that The brake assembly further includes a brake knob; the brake knob is arranged on one side of the second brake pad, and the brake knob is movably provided through the knob rotating shaft and drives the second brake pad to contact or move away from the knob.

9. The braking device according to claim 1, wherein: The lifting rod is provided with a rack portion; the rack portion is arranged on the lifting rod in the up-down direction, the lifting rod has a plurality of lifting rods, and two lifting rods form a group; The knob is provided with a gear, which is arranged between the two lifting rods and can be engaged with the rack portion; the gear rotates as the knob is rotated, and drives the two lifting rods to rise and fall in opposite directions relative to the support base.

10. An endoscope device, characterized in that: Comprising a braking device as claimed in any one of claims 1 to 9.

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