A protective mechanism for microscope lens

Abstract

The present invention proposes a protective mechanism for a microscope lens, comprising a film and a fixing device for fixing the film, the fixing device comprising a fixing sleeve sleeved on the lens and a movable sleeve sleeved on the fixing sleeve, the film sleeved on the fixing sleeve, a convex ring is provided on the outer circle of the fixing sleeve, a snap-fitting hole is provided in the convex ring in the radial direction relative to the central axis thereof, an elastic snap-fitting assembly is provided in the snap-fitting hole, a snap-fitting groove adapted to a sphere is provided at a position corresponding to the snap-fitting hole on the inner wall of the movable sleeve, a cutting groove is provided in an annular manner on the outer circumferential wall of the fixing sleeve, a mounting hole is provided at a position corresponding to the cutting groove on the movable sleeve, a blade for cutting the film in cooperation with the cutting groove and a driving assembly for driving the blade to reciprocate axially relative to the mounting hole are provided in the mounting hole. The present invention has a simple structure, is easy to operate, and is convenient for removing the film at the front end of the lens for observation.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, and in particular to a protection mechanism for a microscope lens. Background Art

[0002] Microscopes used in the industrial and medical fields, especially in the field of medical surgery, often require the lenses (including eyepieces, objective lenses, etc.) to be sterilized and sterile so that the lenses are not contaminated when the microscope is used. Existing microscopes are also fixed with elastic rings after being covered with a film on the lens. This fixing method is not firm, and it is inconvenient to open the film when using the microscope for observation. Existing protective covers dedicated to protecting microscope lenses are expensive, with a protective cover costing up to 300 to 400 yuan, which imposes an economic burden on patients and is not conducive to their use when seeing a doctor.

[0003] Chinese patent application No. 201220203104.9 and authorization announcement No. CN202605029U disclose a medical microscope protective cover, which has a circle of elastic rope installed on the cover mouth of the cover body, and a horizontal lace is provided in the middle of the cover body; the elastic rope provided on the cover mouth of the protective cover can shrink the cover mouth, and when in use, the cover mouth only needs to be slightly expanded to cover the main part of the microscope lens from the bottom to the top, and the cover mouth is loosened, that is, the microscope is tightly covered, and at the same time, the laces in the middle are tied with a slipknot after being mutually corresponding to each other at the required position, that is, the protective cover is fixed. Although the medical microscope protective cover can be well fixed on the microscope head, since the cover body mounted on the microscope head is plastic, completely covering the lens may result in blocking the sight of part of the lens (including the eyepiece and the objective lens), especially during surgery, the blocking of the lens sight may seriously affect the smooth progress of the surgery, and during use, the cover body in front of the lens is often cut open with a scalpel to leak out the microscope lens, which is inconvenient to operate and easy to scratch the microscope head. Summary of the invention

[0004] Based on the above problems, the present invention aims to provide a protective mechanism with simple structure, low cost, easy operation and convenient for removing the film at the front end of the lens.

[0005] In view of the above problems, the following technical solutions are provided: a protective mechanism for a microscope lens, comprising a film and a fixing device for fixing the film, the fixing device comprising a fixing sleeve mounted on the lens and a movable sleeve mounted on the fixing sleeve, the film being mounted on the fixing sleeve, a convex ring being provided on the outer circle of the fixing sleeve, a snap-fitting hole being provided in the convex ring in a radial direction relative to the central axis thereof, an elastic snap-fitting assembly being provided in the snap-fitting hole, the elastic snap-fitting assembly comprising a sphere, a plug provided at the end of the snap-fitting hole and a first spring whose two ends are respectively fixed to the sphere and the plug, a snap-fitting groove matching the sphere being provided at a position corresponding to the snap-fitting hole on the inner wall of the movable sleeve, a cutting groove being provided in an annular manner on the outer circumferential wall of the fixing sleeve, a mounting hole being provided at a position corresponding to the cutting groove on the movable sleeve, a blade for cooperating with the cutting groove to cut the film and a driving assembly for driving the blade to axially reciprocate relative to the mounting hole being provided in the mounting hole, and the movable sleeve being rotatable relative to the fixed sleeve.

[0006] In the above structure, the fixed sleeve is placed on the lens, the film is covered on the fixed sleeve, and then the movable sleeve is placed on the fixed sleeve. The inner wall of the movable sleeve abuts against the sphere, causing the sphere to move inward and the spring to compress inward. When the fixed sleeve is completely placed on the fixed sleeve, the elastic force of the spring causes the sphere to move outward to match the engaging groove, preventing the movable sleeve from falling off the fixed sleeve, thereby fixing the film. When the microscope needs to be used, the blade is moved out of the mounting hole into the cutting groove by pressing the drive assembly, and the film below the cutting groove is separated from the film above by rotating the movable sleeve. The blade is reset to the mounting hole by controlling the drive assembly, and the cut film is removed through the port of the fixed sleeve, allowing the user to perform surgery or observe experimental items through the lens. When the user has finished using the microscope, the movable sleeve is removed from the fixed sleeve to replace the film. By providing an elastic snap-fit ​​assembly to cooperate with the snap-fit ​​groove, the assembly and disassembly of the movable sleeve can be facilitated. By rotating the movable sleeve to cut the film, the lens is kept sterile and the user can observe and experiment conveniently. By providing a driving mechanism to drive the blade to reciprocate along the axial direction of the snap-fit ​​hole, the fixed sleeve and the blade can be prevented from colliding when the movable sleeve is assembled and disassembled, thereby increasing the convenience of the present invention. By providing a plug, the ball and the first spring can be easily installed, and the first spring can be easily fixed to the plug, thereby increasing the reliability of the present invention.

[0007] The present invention is further configured as follows: the driving assembly includes a driving rod connected to the blade, a button core sleeved on the end of the driving rod, and a button shell for driving the button core to move axially back and forth relative to the mounting hole; a plurality of ridges are circumferentially arranged on the outer circumferential wall of the button core, and a slideway is formed between two adjacent ridges; the top surfaces of the plurality of ridges are inclined; the end surface of the button shell facing the button core is provided with meshing teeth meshing with the inclined surface; a plurality of convex columns matching with the plurality of ridges are provided on the inner wall of the mounting hole; a sealing cover threadedly connected to the end of the mounting hole facing the cutting groove is provided; a through hole matching with the driving rod is provided on the sealing cover; a second spring is sleeved on the driving rod; a movable groove for placing the second spring is provided in the through hole; a limit block resisting against the spring is provided on the driving rod.

[0008] In the above structure, the button core is pressed by the button shell, and the button core moves axially along the mounting hole, driving the blade on the driving rod to move toward the cutting groove, and the limit block slides axially along the movable groove. The second spring is compressed by the extrusion of the limit block, so that the blade is located in the cutting groove, and the inclined surface moves to the bottom of the convex column along the bevel on the meshing tooth. At the same time, the button core rotates slightly, so that the convex ridge on the button core abuts against the convex column to prevent the driving rod from returning. By rotating the movable sleeve, the blade cuts and separates the film in the cutting groove. After the film cutting is completed, the button shell is pressed to separate the convex ridge on the button core from the convex column. The elastic force of the second spring resets the driving rod, giving the button core an axial moving force, and the inclined surface cooperates with the meshing tooth to make the inclined surface move into the tooth groove of the meshing tooth. At the same time, the button core rotates slightly, so that the convex column is located in the slideway, and the button core resets through the cooperation between the convex column and the slideway and the elastic force of the second spring. The driving assembly drives the blade by pressing, so that the blade protrudes from the mounting hole and pierces the film when the driving assembly is pressed, thereby facilitating further cutting of the film by the blade, thereby increasing the reliability of the present invention.

[0009] The present invention is further configured such that a slide groove is formed between two adjacent convex columns, a sliding block matched with the slide groove is provided on the outer circumferential wall of the button shell, and a plurality of the sliding blocks are arranged in the circumferential direction of the button shell.

[0010] In the above structure, the button shell is limited by the cooperation of the slider and the slide groove, preventing the button shell from rotating and causing wear due to failure to cooperate with the button core, and can facilitate the positioning and installation of the button shell and drive the button shell to move axially.

[0011] The present invention is further configured such that a limiting column is fixed to one end of the button core that cooperates with the button shell, and a limiting hole that is adapted to the limiting column is provided in the button shell.

[0012] In the above structure, by setting the limiting column and the limiting hole in cooperation, the compactness of the structure between the button core and the button shell can be increased, the connection strength between the two can be increased, and the stability and force degree of the two can be improved; it can also play a limiting role on the button core to avoid the button core from tilting when moving, thereby improving the reliability of the present invention.

[0013] The present invention is further configured such that the edge surface of the blade is arranged toward the rotation direction of the movable sleeve.

[0014] The above structure can facilitate the cutting of the film by the blade, thereby improving the convenience and reliability of the present invention.

[0015] The present invention is further configured such that a limiting groove adapted to the limiting block is provided in the movable groove.

[0016] In the above structure, by setting the limit groove and the limit block in cooperation, it is possible to prevent the driving rod from rotating when the button core rotates, thereby preventing the rotation of the blade and ensuring that the blade surface is always located in the direction of rotation of the movable sleeve, thereby improving the efficiency of cutting the film of the present invention and increasing the reliability of the present invention.

[0017] The present invention is further configured such that a screw hole is provided on the inner wall of the convex ring in a radial direction relative to the central axis thereof, and a locking bolt threadedly matched therewith is provided in the screw hole.

[0018] In the above structure, the connection strength between the fixing sleeve and the lens can be increased by rotating the locking bolt, thereby preventing the fixing sleeve from falling off the lens, thereby increasing the reliability of the present invention.

[0019] The present invention is further configured such that at least four screw holes are provided and are circumferentially arranged on the convex ring.

[0020] By adopting the above structure, the relative locking bolts can generate a holding force on the lens, thereby further increasing the connection strength between the fixing sleeve and the lens, and the stability of the fixing sleeve can be increased by the four locking bolts.

[0021] The present invention is further configured such that an elastic pad abutting against the lens is adhered to the end surface of the locking bolt facing the lens.

[0022] In the above structure, the elastic pad can be provided to prevent the locking bolt from wearing the lens, thereby increasing the reliability of the present invention.

[0023] The present invention is further configured such that the plug is threadedly connected to the engaging hole.

[0024] By adopting the above structure, the tightness of the fit between the ball and the engaging groove can be adjusted by adjusting the position of the plug in the engaging hole; when the ball is worn or the elastic force of the first spring deteriorates, the plug can be rotated to move toward the inside of the engaging hole, thereby compensating the ball and the first spring, thereby extending the service life of the ball and the first spring and increasing the reliability of the present invention.

[0025] The beneficial effects of the present invention: Compared with the existing protective mechanism, the present invention has a simple structure, convenient operation, low cost, and is convenient for removing the film at the front end of the lens for observation. By setting an elastic snap-fit ​​assembly to cooperate with the snap-fit ​​groove, the structure is ingenious and flexible, which can facilitate the disassembly and assembly of the movable sleeve, thereby achieving the fixation of the film and making the lens sterile; by rotating the movable sleeve to cut the film at the front end of the lens, the user can operate more conveniently when he needs to perform surgery on the patient or observe and test the test product through a microscope. The driving assembly drives the blade by pressing, so that the blade protrudes from the mounting hole when the driving assembly is subjected to pressing force, and punctures the film, thereby facilitating the blade to further cut the film, thereby increasing the reliability of the present invention. The present invention fixes and cuts the film by cooperating with the movable sleeve and the fixed sleeve, which greatly reduces the cost of use, reduces the cost of surgery for patients, and promotes social development. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention.

[0027] Figure 2 It is a schematic diagram of the structure in which the fixed sleeve and the movable sleeve are separated in the present invention.

[0028] Figure 3 It is a schematic diagram of the main structure of the present invention.

[0029] Figure 4 for Figure 3 Sectional view of AA.

[0030] Figure 5 It is a side view structural schematic diagram of the present invention.

[0031] Figure 6 for Figure 5 Schematic diagram of the structure of BB.

[0032] Figure 7 for Figure 6 A magnified view of the structure at center.

[0033] Figure 8 It is a schematic diagram of the structure of the button shell in the present invention.

[0034] Fig. 9 It is a structural schematic diagram of the button core in the present invention.

[0035] Fig.10 It is a cross-sectional view of the engaging hole in the present invention.

[0036] Meanings of the numbers in the figure: 1-fixing device; 11-fixing sleeve; 111-convex ring; 112-cutting groove; 1111-engaging hole; 1112-screw hole; 1113-locking bolt; 12-movable sleeve; 121-engaging groove; 122-mounting hole; 1221-convex column; 1222-cover; 1223-slide; 2-elastic engaging assembly; 21-sphere; 22-plug; 23-first spring; 3-blade; 4-driving assembly; 41-driving rod; 411-second spring; 412-limiting block; 42-button core; 421-convex ridge; 422-slideway; 423-inclined surface; 424-limiting column; 43-button shell; 431-engaging tooth; 432-sliding block; 433-limiting hole; 5-through hole; 51-movable groove; 511-limiting groove. DETAILED DESCRIPTION

[0037] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0038] like Figures 1 to 10 The protective mechanism for a microscope lens shown in the figure comprises a film and a fixing device 1 for fixing the film, the fixing device 1 comprises a fixing sleeve 11 sleeved on the lens and a movable sleeve 12 sleeved on the fixing sleeve 11, the film is sleeved on the fixing sleeve 11, a convex ring 111 is provided on the outer circle of the fixing sleeve 11, a snap-fit ​​hole 1111 is provided in the convex ring 111 in the radial direction relative to the central axis thereof, an elastic snap-fit ​​component 2 is provided in the snap-fit ​​hole 1111, the elastic snap-fit ​​component 2 comprises a sphere 21, a plug 22 provided at the end of the snap-fit ​​hole 1111, and two ends are respectively fixed A first spring 23 is provided on the sphere 21 and the plug 22, and a snap-fitting groove 121 matched with the sphere 21 is provided at a position corresponding to the snap-fitting hole 1111 on the inner wall of the movable sleeve 12. A cutting groove 112 is provided in an annular manner on the outer circumferential wall of the fixed sleeve 11, and a mounting hole 122 is provided at a position corresponding to the cutting groove 112 on the movable sleeve 12. A blade 3 for cooperating with the cutting groove 112 to cut the film and a driving component 4 for driving the blade 3 to axially reciprocate relative to the mounting hole 122 are provided in the mounting hole 122, and the movable sleeve 12 is rotatable relative to the fixed sleeve 11.

[0039] In the above structure, the fixed sleeve 11 is mounted on the lens, the film is covered on the fixed sleeve 11, and then the movable sleeve 12 is mounted on the fixed sleeve 11, the inner wall of the movable sleeve 12 abuts against the sphere 21, so that the sphere 21 moves inward, and the spring is compressed inward. When the fixed sleeve 11 is completely mounted on the fixed sleeve 11, the elastic force of the spring causes the sphere 21 to move outward to match the engaging groove 121, preventing the movable sleeve 12 from falling off the fixed sleeve 11, thereby fixing the film. When the microscope needs to be used, the blade 3 is moved out of the mounting hole 122 to the cutting groove 112 by pressing the drive assembly 4, and the film below the cutting groove 112 is separated from the film above by rotating the movable sleeve 12, and the blade 3 is reset to the mounting hole 122 by controlling the drive assembly 4, and the cut film is removed through the port of the fixed sleeve 11, so that the user can perform surgery or observe experimental items through the lens. After the user has finished using the microscope, the movable sleeve 12 is removed from the fixed sleeve 11 to replace the film. The elastic snap-fit ​​assembly 2 is provided to cooperate with the snap-fit ​​groove 121, which facilitates the assembly and disassembly of the movable sleeve 12. The film is cut by rotating the movable sleeve 12, so that the lens is kept sterile and the user can observe and experiment conveniently. The driving mechanism is provided to drive the blade 3 to reciprocate axially along the snap-fit ​​hole 1111, so that the fixed sleeve 11 and the blade 3 can be prevented from colliding when the movable sleeve 12 is assembled and disassembled, thereby increasing the convenience of the present invention. The plug 22 is provided to facilitate the installation of the sphere 21 and the first spring 23, and to facilitate the fixation of the first spring 23 and the plug 22, thereby increasing the reliability of the present invention.

[0040] like Figure 7 As shown, in this embodiment, the driving assembly 4 includes a driving rod 41 connected to the blade 3, a button core 42 sleeved on the end of the driving rod 41, and a button shell 43 for driving the button core 42 to move axially back and forth relative to the mounting hole 122. A plurality of ridges 421 are circumferentially arranged on the outer circumferential wall of the button core 42, and a slideway 422 is formed between two adjacent ridges 421. The top surfaces of the plurality of ridges 421 are inclined surfaces 423, and the end surface of the button shell 43 facing the button core 42 is provided with a groove meshing with the inclined surface 423. The meshing teeth 431 are provided on the inner wall of the mounting hole 122, and a plurality of bosses 1221 matching with the plurality of ridges 421 are provided. The end of the mounting hole 122 facing the cutting groove 112 is provided with a cover 1222 threadedly connected thereto, and the cover 1222 is provided with a through hole 5 matching with the driving rod 41, and the driving rod 41 is sleeved with a second spring 411, and a movable groove 51 for placing the second spring 411 is provided in the through hole 5, and the driving rod 41 is provided with a limit block 412 that resists the spring.

[0041] In the above structure, the button core 42 is pressed by the button shell 43, and the button core 42 moves axially along the mounting hole 122, driving the blade 3 on the driving rod 41 to move toward the cutting groove 112, and the limit block 412 slides axially along the movable groove 51. The second spring 411 is compressed by the extrusion of the limit block 412, so that the blade 3 is located in the cutting groove 112, and the inclined surface 423 moves along the oblique angle on the meshing tooth 431 to the bottom of the protruding column 1221. At the same time, the button core 42 rotates slightly, so that the convex ridge 421 on the button core 42 is against the protruding column 1221 to prevent the driving rod 41 from returning to its original position. By rotating the movable sleeve 12, the blade 3 cuts and separates the film in the cutting groove 112. After the film is cut, the button shell 43 is pressed to separate the ridge 421 on the button core 42 from the convex column 1221. The elastic force of the second spring 411 resets the driving rod 41, giving the button core 42 an axial movement force. The inclined surface 423 cooperates with the meshing tooth 431, so that the inclined surface 423 moves into the tooth groove of the meshing tooth 431. At the same time, the button core 42 rotates slightly, so that the convex column 1221 is located in the slideway 422. The button core 42 is reset by the cooperation between the convex column 1221 and the slideway 422 and the elastic force of the second spring 411. The driving assembly 4 drives the blade 3 by pressing, so that the blade 3 protrudes from the mounting hole 122 when the driving assembly 4 is pressed, and punctures the film, so that the blade 3 can further cut the film, thereby increasing the reliability of the present invention.

[0042] In this embodiment, a slide groove 1223 is formed between two adjacent protrusions 1221 , and a slider 432 adapted to the slide groove 1223 is provided on the outer circumferential wall of the button shell 43 . A plurality of sliders 432 are arranged circumferentially relative to the button shell 43 .

[0043] In the above structure, the button shell 43 is limited by the cooperation between the slider 432 and the slide groove 1223 to prevent the button shell 43 from rotating and causing wear due to failure to cooperate with the button core 42, and can facilitate the positioning and installation of the button shell 43 and drive the button shell 43 to move axially.

[0044] In this embodiment, a limiting column 424 is fixed to one end of the button core 42 that cooperates with the button shell 43 , and a limiting hole 433 matched with the limiting column 424 is provided in the button shell 43 .

[0045] In the above structure, by setting the limiting column 424 and cooperating with the limiting hole 433, the compactness of the structure between the button core 42 and the button shell 43 can be increased, the connection strength between the two can be increased, and the stability and force degree of the two can be improved; it can also play a limiting role on the button core 42 to avoid the button core 42 from tilting when moving, thereby improving the reliability of the present invention.

[0046] In this embodiment, the edge surface of the blade 3 is arranged toward the rotation direction of the movable sleeve 12 .

[0047] The above structure can facilitate the cutting of the film by the blade 3 and increase the smoothness of the cutting by the blade 3, thereby preventing the film from being mixed and causing the movable sleeve 12 to be unable to rotate, thereby improving the convenience and reliability of the present invention.

[0048] In this embodiment, a limiting groove 511 adapted to the limiting block 412 is defined in the movable groove 51 .

[0049] In the above structure, by setting the limiting groove 511 and cooperating with the limiting block 412, it is possible to prevent the button core 42 from rotating and driving the driving rod 41 to rotate, thereby preventing the blade 3 from rotating and ensuring that the cutting surface of the blade 3 is always located in the direction of rotation of the movable sleeve 12, thereby improving the efficiency of cutting the film of the present invention and increasing the reliability of the present invention.

[0050] like Figure 4 As shown, in this embodiment, a screw hole 1112 is opened on the inner wall of the convex ring 111 in the radial direction relative to the central axis thereof, and a locking bolt 1113 is provided in the screw hole 1112 to be threadedly matched therewith.

[0051] In the above structure, the connection strength between the fixing sleeve 11 and the lens can be increased by rotating the locking bolt 1113, thereby preventing the fixing sleeve 11 from falling off the lens, thereby increasing the reliability of the present invention.

[0052] In this embodiment, at least four screw holes 1112 are provided and are circumferentially arranged on the protruding ring 111 .

[0053] By adopting the above structure, the relative locking bolts 1113 can generate a holding force on the lens, thereby further increasing the connection strength between the fixing sleeve 11 and the lens, and the stability of the fixing sleeve 11 can be increased by the four locking bolts 1113 .

[0054] In this embodiment, an elastic pad that abuts against the lens is adhered to the end surface of the locking bolt 1113 facing the lens.

[0055] In the above structure, the elastic pad can be provided to prevent the locking bolt 1113 from wearing the lens, thereby increasing the reliability of the present invention.

[0056] In this embodiment, the plug 22 is threadedly connected to the engaging hole 1111 .

[0057] By adopting the above structure, the tightness of the fit between the ball 21 and the engaging groove 121 can be adjusted by adjusting the position of the plug 22 in the engaging hole 1111; when the ball 21 is worn or the elastic force of the first spring 23 deteriorates, the plug 22 can be rotated to move toward the inside of the engaging hole 1111, thereby compensating the ball 21 and the first spring 23, thereby extending the service life of the ball 21 and the first spring 23 and increasing the reliability of the present invention.

[0058] like Figure 7 As shown, in this embodiment, the cross section of the cutting groove 112 is angular.

[0059] The above structure can facilitate the cooperation between the blade 3 and the cutting groove 112 to cut the film, thereby increasing the efficiency of the cutting by the blade 3 and increasing the smoothness of the cutting by the blade 3 to avoid the film from being mixed and causing the movable sleeve 12 to be unable to rotate.

[0060] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the scope of protection of the present invention.

Claims

1. A protective mechanism for a microscope lens, comprising a film and a fixing device for fixing the film, characterized in that: The fixing device comprises a fixing sleeve mounted on the lens and a movable sleeve mounted on the fixing sleeve, the film being mounted on the fixing sleeve, a convex ring being provided on the outer circle of the fixing sleeve, a clamping hole being provided in the convex ring in a radial direction relative to its central axis, an elastic clamping assembly being provided in the clamping hole, the elastic clamping assembly comprising a sphere, a plug arranged at the end of the clamping hole and a first spring respectively fixed at both ends to the sphere and the plug, a clamping groove matching the sphere being provided at a position corresponding to the clamping hole on the inner wall of the movable sleeve, a cutting groove being provided in an annular manner on the outer circumferential wall of the fixing sleeve, a mounting hole being provided at a position corresponding to the cutting groove on the movable sleeve, a blade for cooperating with the cutting groove to cut the film and a driving assembly for driving the blade to move axially back and forth relative to the mounting hole being provided in the mounting hole, the movable sleeve being rotatable relative to the fixed sleeve, the driving assembly comprising a driving rod connected to the blade, a button core mounted on the end of the driving rod and a driving assembly for A button shell that drives the button core to move axially back and forth relative to the mounting hole, a plurality of ridges are circumferentially arranged on the outer circumferential wall of the button core, a slideway is formed between two adjacent ridges, the top surfaces of the plurality of ridges are inclined, the end surface of the button shell facing the button core is provided with meshing teeth that mesh with the inclined surface, a plurality of convex columns that match with the plurality of ridges are provided on the inner wall of the mounting hole, a sealing cover that is threadedly connected with the plurality of ridges is provided at the end of the mounting hole facing the cutting groove, a through hole that is adapted to the driving rod is provided on the sealing cover, a second spring is sleeved on the driving rod, a movable groove for placing the second spring is provided in the through hole, a limit block that abuts against the spring is provided on the driving rod, a screw hole is opened on the inner wall of the convex ring in a radial direction relative to the central axis thereof, a locking bolt that abuts against the spring is provided in the screw hole, at least four screw holes are provided, and are circumferentially arranged on the convex ring, and an elastic pad that abuts against the lens is adhered to the end surface of the locking bolt facing the lens direction.

2. A protective mechanism for a microscope lens according to claim 1, characterized in that: A sliding groove is formed between two adjacent convex columns, and a sliding block matched with the sliding groove is provided on the outer circumferential wall of the button shell, and a plurality of the sliding blocks are arranged relative to the circumference of the button shell.

3. A protective mechanism for a microscope lens according to claim 2, characterized in that: A limiting column is fixed on one end of the button core that cooperates with the button shell, and a limiting hole that matches the limiting column is arranged in the button shell.

4. A protective mechanism for a microscope lens according to claim 3, characterized in that: The edge surface of the blade is arranged toward the rotation direction of the movable sleeve.

5. A protective mechanism for a microscope lens according to claim 4, characterized in that: A limiting groove matched with the limiting block is provided in the movable groove.

6. The protective mechanism for a microscope lens according to claim 1, characterized in that: The plug is threadedly connected to the engaging hole.

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