Endoscope eyepiece end structure

Abstract

The utility model discloses an eyepiece end structure of an endoscope, which relates to the technical field of medical instruments, and is characterized in that the endoscope comprises a main body component, an eyepiece end part and an eyepiece end part, the main body component comprises a main body part and a support tube connected to the main body part, and an assembly cavity is formed in the support tube; the image rotation system lens is arranged in the assembly cavity and is close to the main body part; the eyepiece sleeve is arranged in the assembly cavity in a penetrating manner and is opposite to the image rotation system lens; the eyepiece is arranged at one end of the eyepiece sleeve away from the image rotation system lens; the eyepiece protection sheet is arranged on one side, deviating from the image rotation system lens, of the eyepiece; and the first adjusting assembly is arranged on the supporting tube and is used for adjusting the radial position of the eyepiece sleeve so as to enable the eyepiece and the eyepiece protection sheet to be centered. According to the technical scheme provided by the utility model, the problem that the eyepiece and the eyepiece protection sheet of the assembled endoscope are easy to be misaligned can be solved, and the possibility that an aperture appears on the outer side of a screen view field of the endoscope is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, especially a kind of endoscope eyepiece end structure. BACKGROUND

[0002] Endoscope is a kind of medical instrument widely used in medical examination and minimally invasive surgery, and the front end of endoscope is generally a slender endoscope tube, which is used to extend into the cavity, and the light emitted by the cold light source device through the end of the endoscope tube is reflected by the skin, mucosa and other tissues on the inner wall of the cavity, then enters the endoscope, and is sequentially irradiated on the photosensitive element through objective lens protection sheet, objective lens, image conversion system lens, eyepiece, eyepiece protection sheet, and the photosensitive element converts the optical signal into electronic signal and displays on the screen, so that the internal condition of the cavity can be observed.

[0003] Due to machining errors, assembly errors and the like, the assembled endoscope is prone to misalignment of the eyepiece and the eyepiece protection sheet, and when a large amount of illumination light enters the interior of the endoscope, the eyepiece protection sheet will reflect part of the light to the parts inside the endoscope, resulting in a high-brightness aperture on the outside of the field of view of the screen, which will distract the user's attention and reduce the efficiency of examination and surgery. SUMMARY

[0004] The main purpose of the present utility model is to provide an endoscope eyepiece end structure, which aims to solve the problem of misalignment of the eyepiece and the eyepiece protection sheet in the assembled endoscope.

[0005] To achieve the above-mentioned purpose, the endoscope eyepiece end structure provided by the present utility model comprises:

[0006] A main body assembly comprising a main body portion and a support tube connected to the main body portion, wherein an assembly cavity is formed inside the support tube;

[0007] An image conversion system lens arranged in the assembly cavity and close to the main body portion;

[0008] An eyepiece barrel arranged in the assembly cavity and opposite to the image conversion system lens;

[0009] An eyepiece arranged at one end of the eyepiece barrel away from the image conversion system lens;

[0010] An eyepiece protection sheet arranged on the side of the eyepiece away from the image conversion system lens; and

[0011] A first adjusting assembly arranged on the support tube, for adjusting the radial position of the eyepiece barrel, so that the eyepiece and the eyepiece protection sheet are aligned.

[0012] In an embodiment, the first adjusting assembly comprises at least three first adjusting members, the at least three first adjusting members are spaced apart along the circumference of the supporting tube, the first adjusting members are arranged through the side wall of the supporting tube and abut against the outer wall of the eyepiece barrel, and the first adjusting members are capable of moving radially so that the radial position of the eyepiece barrel is adjustable.

[0013] In an embodiment, the supporting tube is provided with a threaded hole in communication with the assembly cavity, the first adjusting member is arranged through the threaded hole and is threadedly connected with the threaded hole; and / or,

[0014] The first adjusting assembly comprises three first adjusting members, and the three first adjusting members are equally spaced apart along the circumference of the assembly cavity.

[0015] In an embodiment, one end of the eyepiece barrel is provided with an aperture structure towards the relay system lens, and the endoscope further comprises an adjusting seat, one end of the adjusting seat is arranged in the main body, and the other end of the adjusting seat is connected to the end of the eyepiece barrel provided with the aperture structure.

[0016] The material of the eyepiece barrel is a flexible material.

[0017] In an embodiment, the endoscope eyepiece end structure further comprises a second adjusting assembly, the second adjusting assembly is arranged in the supporting tube and is drivingly connected with the adjusting seat, and is used for adjusting the radial position of the adjusting seat so that the aperture structure is aligned with the relay system lens.

[0018] In an embodiment, the second adjusting assembly comprises at least three second adjusting members, the at least three second adjusting members are spaced apart along the circumference of the supporting tube, the second adjusting members are arranged through the side wall of the supporting tube and abut against the outer wall of the adjusting seat, and the second adjusting members are capable of moving radially so that the radial position of the adjusting seat is adjustable.

[0019] In an embodiment, the outer wall of the adjusting seat is provided with a limiting groove, and the second adjusting member is inserted into the limiting groove to limit the axial movement of the adjusting seat.

[0020] In an embodiment, the endoscope eyepiece end structure further comprises a locking structure, and the locking structure locks the eyepiece barrel to the adjusting seat.

[0021] In an embodiment, the adjusting seat is provided with a clamping portion, the clamping portion is provided with an opening, the clamping portion is sleeved on the outside of the eyepiece barrel, the locking structure comprises a locking ring and a locking screw, the locking ring is sleeved on the outside of the clamping portion, one end of the locking screw is arranged through the locking ring and is threadedly connected with the locking ring, and the other end of the locking screw abuts against the side of the clamping portion away from the opening; and / or,

[0022] The support tube is provided with an avoiding opening for exposing the locking structure.

[0023] In an embodiment, the endoscope eyepiece structure further comprises:

[0024] an eyepiece seat connected to the support tube and coaxially arranged with the support tube, and the eyepiece protective sheet is fixed to an end of the eyepiece seat away from the support tube; and

[0025] a shell, one end of the shell is sleeved outside the support tube, the other end of the shell is sleeved outside the eyepiece seat, and the shell covers the first adjusting assembly and the second adjusting assembly.

[0026] The endoscope eyepiece structure in the technical scheme of the utility model comprises a main body assembly, a turning image system lens, an eyepiece barrel, an eyepiece, an eyepiece protective sheet and a first adjusting assembly, the main body assembly comprises a main body part and a support tube, the support tube is provided with an assembly cavity, the turning image system lens is located in the assembly cavity and is close to the main body part, the eyepiece barrel is located in the assembly cavity and is located on the side away from the main body part of the turning image system lens, the first adjusting assembly can adjust the radial position of the eyepiece barrel, compensates the manufacturing error and the assembly error of the endoscope, makes the eyepiece on the eyepiece barrel and the eyepiece protective sheet centred, when light passes through the turning image system lens, the eyepiece and the eyepiece protective sheet in turn, the light reflected by the eyepiece protective sheet centred with the eyepiece greatly reduces, thereby the reflection of light in the endoscope is reduced, the possibility of the high light circle appearing on the outside of the field of view of the screen is reduced, the attention of the user is avoided, and the efficiency of the examination and the operation is improved; in addition, the reflection of light in the endoscope is reduced, so that the light can directly pass through the eyepiece protective sheet and irradiate on the photosensitive element more, which is also beneficial to improving the imaging quality, reducing the resolution difficulty and improving the efficiency of the examination and the operation. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to the structure shown in these drawings without creating labor.

[0028] Figure 1 The cross section of part of the structure of an embodiment of the endoscope eyepiece structure provided by the utility model Figure 1 ;

[0029] Figure 2 The cross section of part of the structure of an embodiment of the endoscope eyepiece structure provided by the utility model Figure 2 ;

[0030] Figure 3 The explosion of part structure of the endoscope eyepiece end structure one embodiment provided by the utility model Figure 1 ;

[0031] Figure 4 The explosion of part structure of the endoscope eyepiece end structure one embodiment provided by the utility model Figure 2 ;

[0032] Figure 5 The section view of part structure of the endoscope eyepiece end structure one embodiment provided by the utility model Figure 3 ;

[0033] Figure 6 The structure diagram of the adjusting seat of the endoscope eyepiece end structure provided by the utility model.

[0034] Explanation of reference numerals:

[0035] 100, main body assembly; 110, main body part; 120, support tube; 121, assembly cavity; 122, avoiding opening; 130, image conversion system lens;

[0036] 200, eyepiece barrel;

[0037] 300, eyepiece;

[0038] 400, eyepiece protection sheet;

[0039] 500, first adjusting assembly; 510, first adjusting part;

[0040] 600, adjusting seat; 610, limiting groove; 611, inclined side wall; 620, clamping part;

[0041] 700, second adjusting assembly; 710, second adjusting part;

[0042] 800, locking structure; 810, locking ring; 820, locking screw;

[0043] 900, eyepiece seat;

[0044] 1000, shell;

[0045] 1100, eyepiece cover.

[0046] The realization, functional features and advantages of the utility model will be further explained by combining with embodiments and referring to the drawings. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model.

[0048] It should be noted that if the embodiments of the present utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.

[0049] In the present utility model, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; "connection" can be mechanical connection, or electrical connection, can be direct connection, or indirect connection through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements. Unless otherwise explicitly limited, the above terms in the present utility model can be understood in the specific meaning according to the specific circumstances by those skilled in the art.

[0050] In addition, if the embodiments of the present utility model involve "first", "second" and the like, the "first", "second" and the like are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions, for example, "A and / or B" includes A solution, or B solution, or A and B solutions. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present utility model.

[0051] The present utility model provides an endoscope eyepiece end structure. The endoscope can be a nasal sinus mirror, or an intra-articular endoscope, a neurosurgery endoscope, or other circular field of view endoscopes.

[0052] Please refer to Figures 1 to 3 , Figure 1 The cross section of part of the structure of an embodiment of the endoscope eyepiece end structure provided by the present utility model Figure 1 , Figure 2The utility model provides a part structure's section view of endoscope eyepiece end structure one embodiment of the utility model Figure 2 , Figure 3 The utility model provides a part structure's explosion of endoscope eyepiece end structure one embodiment of the utility model Figure 1 .

[0053] In the utility model one embodiment, the endoscope eyepiece end structure includes:

[0054] Main body component 100, including main body part 110 and the support pipe 120 of being connected on main body part 110, the inside of support pipe 120 is formed with assembly cavity 121;

[0055] Convert image system lens 130, be located in assembly cavity 121 and be close to main body part 110;

[0056] Eyepiece barrel 200, wear in assembly cavity 121 and with convert image system lens 130 opposite;

[0057] Eyepiece 300, be located in eyepiece barrel 200 away from convert image system lens 130 one end;

[0058] Eyepiece protection piece 400, be located in eyepiece 300 deviate from convert image system lens 130 one side; And

[0059] First adjusting component 500, be located in support pipe 120, for adjusting the radial position of eyepiece barrel 200, to make eyepiece 300 and eyepiece protection piece 400 centering.

[0060] The technical scheme of the utility model discloses endoscope eyepiece structure includes main part assembly 100, image rotating system lens 130, eyepiece barrel 200, eyepiece 300, eyepiece protection piece 400 and first adjusting assembly 500, main part assembly 100 includes main part 110 and support pipe 120, support pipe 120 is equipped with assembly cavity 121, image rotating system lens 130 is located in assembly cavity 121 and is close to main part 110, eyepiece barrel 200 is located in assembly cavity 121 and is located image rotating system lens 130 side away from main part 110, first adjusting assembly 500 can adjust the radial position of eyepiece barrel 200, compensate the manufacturing error and assembly error of endoscope, make eyepiece 300 on eyepiece barrel 200 and eyepiece protection piece 400 centring, when light passes through image rotating system lens 130, eyepiece 300, eyepiece protection piece 400 in turn, the light reflected by the eyepiece protection piece 400 centring with eyepiece 300 greatly reduces, thereby reduce the reflection of light in endoscope, also just reduce the possibility of high light circle appearing on the field of view of screen, avoid the distraction of user, improve the efficiency of examination and operation, in addition, reduce the reflection of light in endoscope so that light can more directly pass through eyepiece protection piece 400 and irradiate on photosensitive element, also be favorable to improve the imaging quality, reduce the difficulty of resolution, also improve the efficiency of examination and operation.

[0061] Wherein, the first adjusting assembly 500 can be a plurality of screws, the plurality of screws are arranged outside the eyepiece barrel 200 and are distributed along different radial directions, the eyepiece barrel 200 is pushed by the screws in different directions, and adjustment of the radial position of the eyepiece barrel 200 is realized.

[0062] In an embodiment, the first adjusting assembly 500 includes at least three first adjusting members 510, the at least three first adjusting members 510 are distributed along the circumference of the support pipe 120, the first adjusting members 510 are arranged through the side wall of the support pipe 120 and abut against the outer wall of the eyepiece barrel 200, the first adjusting members 510 can move radially so that the radial position of the eyepiece barrel 200 is adjustable.

[0063] In combination Figures 1 to 4In the embodiment of the utility model, first adjusting assembly 500 includes at least three first adjusting pieces 510, these first adjusting pieces 510 are spaced along the circumference (i.e. circumferential direction) of support pipe 120, and each first adjusting piece 510 passes through the side wall of assembly cavity 121 and can move along the radial direction of ocular barrel 200, and the end of each first adjusting piece 510 abuts against the outer wall of ocular barrel 200, so that each first adjusting piece 510 can exert radial force on ocular barrel 200, and when the first adjusting pieces 510 in different radial directions move outward or inward on the side wall of support pipe 120, ocular barrel 200 can be moved to different positions, so that the radial position of ocular barrel 200 is adjustable. First adjusting assembly 500 realizes the radial position adjustment of ocular barrel 200 through a plurality of first adjusting pieces 510 which are structurally identical, is simple in structure, and has few types of parts; in addition, a plurality of first adjusting pieces 510 provide stable support, reduce the possibility of shaking of ocular barrel 200, and improve the stability of imaging during observation. Wherein, the radial movement of first adjusting piece 510 along ocular barrel 200 can be realized by the sliding of first adjusting piece 510 through the side wall of support pipe 120, or by the threaded connection of first adjusting piece 510 through the side wall of support pipe 120 and support pipe 120.

[0064] In an embodiment, support pipe 120 is provided with a threaded hole in communication with assembly cavity 121, and first adjusting piece 510 is threaded through the threaded hole and is in threaded connection with the threaded hole.

[0065] First adjusting assembly 500 includes three first adjusting pieces 510, and the three first adjusting pieces 510 are equally spaced along the circumference of assembly cavity 121.

[0066] In the embodiment of the utility model, first adjusting piece 510 is in threaded connection with the inner wall of assembly cavity 121, realizes the radial movement of first adjusting piece 510 along ocular barrel 200, is simple in structure and easy to realize, and the threaded connection has self-locking property, so that after first adjusting assembly 500 adjusts the position of ocular barrel 200 to the right place, it is not necessary to individually fix each first adjusting piece 510 to prevent ocular barrel 200 from shaking, thereby reducing the assembly steps. In the embodiment, first adjusting piece 510 adopts a set screw, is easy to obtain, and reduces the manufacturing cost of the endoscope.

[0067] In the embodiment of the utility model, the first adjusting assembly 500 includes three first adjusting pieces 510, the three first adjusting pieces 510 are equidistantly distributed on the outside of the ocular tube 200 along the circumference of the assembling cavity 121, that is, the included angle of the axes of two adjacent first adjusting pieces 510 is 120°, the number of the first adjusting pieces 510 is small, and the manufacturing cost of the endoscope is reduced; and the equidistantly distributed three first adjusting pieces 510 ensure the uniformity of the supporting force on the ocular tube 200, on the one hand, the ocular lens 300 and the ocular protective sheet 400 are more easily centered, and on the other hand, the possibility of the shaking of the ocular tube 200 is reduced.

[0068] In an embodiment, one end of the ocular tube 200 towards the mirror system lens 130 is provided with a diaphragm structure, and the endoscope further includes an adjusting seat 600, one end of the adjusting seat 600 is arranged on the main body part 110, and the other end of the adjusting seat 600 is connected to the end of the ocular tube 200 provided with the diaphragm structure.

[0069] The material of the ocular tube 200 is a flexible material.

[0070] In the embodiment of the utility model, a diaphragm structure (not shown in the figure) for controlling the amount of light passing through is further arranged between the ocular lens 300 and the mirror system lens 130, the diaphragm structure and the ocular lens 300 are arranged at two ends of the ocular tube 200 respectively, when the endoscope is assembled, the diaphragm structure needs to be centered with the mirror system lens 130 first, and then the position of the ocular lens 300 is adjusted to center the ocular lens 300 with the ocular protective sheet 400, therefore, in the embodiment, the ocular tube 200 is made of a flexible material, so as to avoid the displacement of the diaphragm structure when the radial position of the ocular lens 300 is adjusted, thereby ensuring that the light passing through the diaphragm structure meets the requirements to obtain good imaging quality. In addition, in the process of moving or using the endoscope, the flexible ocular tube 200 is easy to deform or shake, therefore, in the embodiment, the adjusting seat 600 is arranged to connect the ocular tube 200 to the main body part 110, thereby reducing the possibility of the deformation or shaking of the ocular tube 200, ensuring that the diaphragm structure is centered with the mirror system lens, the ocular lens 300 is centered with the ocular protective sheet 400, and further reducing the possibility of the damage of the endoscope, thereby prolonging the service life of the endoscope.

[0071] In an embodiment, the endoscope ocular end structure further includes a second adjusting assembly 700, the second adjusting assembly 700 is arranged on the main body assembly 100 and is drivingly connected with the adjusting seat 600, and is used for adjusting the radial position of the adjusting seat 600, so as to center the diaphragm structure with the mirror system lens 130.

[0072] In combination with Figures 1 to 4In the embodiment of the utility model, because of manufacturing error and assembly error etc., if the adjusting seat 600 is directly connected with the main body part 110, the problem of the diaphragm structure and the turning image system lens 130 not being in the center is prone to occur, therefore, the second adjusting assembly 700 is also arranged in the embodiment, the second adjusting assembly 700 can adjust the radial position of the adjusting seat 600, the position of the one end of the ocular tube 200 provided with the diaphragm structure and connected with the adjusting seat 600 is also adjusted, thereby the position of the diaphragm structure is adjusted, the manufacturing error and assembly error of the endoscope are compensated, the diaphragm structure and the turning image system lens 130 are in the center, the light passing through the diaphragm structure meets the demand, thereby good imaging quality is obtained. The second adjusting assembly 700 can be a plurality of screws, the plurality of screws are arranged outside the adjusting seat 600 and are distributed along different radial directions, the adjusting seat 600 is pushed by the screws in different directions, thereby the radial position of the adjusting seat 600 is adjusted. The second adjusting assembly 700 can also be a plurality of elastic members, the plurality of elastic members are arranged outside the adjusting seat 600 and are distributed along different radial directions, the elastic force of the elastic members in different directions is adjusted, thereby the radial position of the adjusting seat 600 is adjusted.

[0073] In an embodiment, the second adjusting assembly 700 includes at least three second adjusting members 710, the at least three second adjusting members 710 are spaced apart along the circumference of the support tube 120, the second adjusting member 710 is arranged through the side wall of the support tube 120 and abuts against the outer wall of the adjusting seat 600, the second adjusting member 710 can move along the radial direction so that the radial position of the adjusting seat 600 is adjustable.

[0074] In the embodiment of the utility model, the second adjusting assembly 700 includes at least three second adjusting members 710, the second adjusting members 710 are spaced apart along the circumference (i.e. the circumferential direction) of the support tube 120, each second adjusting member 710 is arranged through the side wall of the support tube 120 and can move along the radial direction of the adjusting seat 600, the end of each second adjusting member 710 abuts against the outer wall of the adjusting seat 600, so that each second adjusting member 710 can exert a radial force on the adjusting seat 600, when the second adjusting members 710 in different radial directions move outward or inward on the side wall of the support tube 120, the adjusting seat 600 can be moved to different positions, thereby the radial position of the adjusting seat 600 is adjustable. The second adjusting assembly 700 adjusts the radial position of the adjusting seat 600 through a plurality of second adjusting members 710 which are the same in structure, the structure is simple and the types of parts are few; in addition, the plurality of second adjusting members 710 provide stable support, the possibility of the adjusting seat 600 shaking is reduced, and the stability of imaging when observing is improved. The second adjusting member 710 moves along the radial direction of the adjusting seat 600, which can be realized by the second adjusting member 710 slidingly arranged through the side wall of the support tube 120, or by the second adjusting member 710 arranged through the side wall of the support tube 120 and threadedly connected with the support tube 120.

[0075] Specific to the embodiment, the second adjusting assembly 700 includes three second adjusting members 710, which are equidistantly distributed along the circumference of the assembly cavity 121 outside the adjusting seat 600, that is, the included angle of the axes of two adjacent second adjusting members 710 is 120°, the number of the second adjusting members 710 is small, and the manufacturing cost of the endoscope is reduced; and the equidistant distribution of the three second adjusting members 710 ensures the uniformity of the support force of the adjusting seat 600, which on the one hand makes it easier to realize the centering of the diaphragm structure and the lens 130 of the image conversion system, and on the other hand reduces the possibility of shaking of the adjusting seat 600.

[0076] Specific to the embodiment, the second adjusting member 710 is connected with the side wall of the support tube 120 through threads, so as to realize the radial movement of the second adjusting member 710 along the adjusting seat 600, which is simple in structure and easy to realize, and the threaded connection has self-locking property, so that after the second adjusting assembly 700 adjusts the position of the adjusting seat 600 to the right place, it is not necessary to separately fix each second adjusting member 710 to prevent the adjusting seat 600 from shaking, thereby reducing the assembly steps. Specifically, the second adjusting member 710 and the first adjusting member 510 adopt the same specification of set screws, which reduces the types of parts, reduces the assembly difficulty, and reduces the manufacturing cost of the endoscope.

[0077] In an embodiment, the outer wall of the adjusting seat 600 is provided with a limiting groove 610, and the second adjusting member 710 is inserted into the limiting groove 610 to limit the axial movement of the adjusting seat 600.

[0078] Referring to Figure 1 , Figure 5 and Figure 6 , in the embodiment of the utility model, the outer wall of the adjusting seat 600 is provided with a limiting groove 610, and after the second adjusting member 710 is inserted into the limiting groove 610, the adjusting seat 600 cannot move axially, and after the radial position of the adjusting seat 600 is adjusted by the second adjusting member 710, the second adjusting assembly 700 not only positions the adjusting seat 600 radially, but also positions the adjusting seat 600 axially, which simplifies the positioning structure of the adjusting seat 600, thereby simplifying the structure of the endoscope and reducing the assembly steps of the endoscope. Specifically, the side of the limiting groove 610 close to the lens 130 of the image conversion system has an inclined side wall 611, and when the second adjusting member 710 is inserted into the limiting groove 610, it abuts against the inclined side wall 611, and as the second adjusting member 710 continues to extend into the limiting groove 610, the second adjusting member 710 and the main body assembly 100 clamp and fix the adjusting seat 600, so that the adjusting seat 600 cannot move axially.

[0079] In an embodiment, the eyepiece end structure of the endoscope further includes a locking structure 800, which locks the eyepiece barrel 200 to the adjusting seat 600.

[0080] With reference to Figure 1 and Figure 3 In the embodiment of the utility model, the eyepiece barrel 200 is locked to the adjusting seat 600 through the locking structure 800, which reduces the possibility of separation of the eyepiece barrel 200 and the adjusting seat 600, improves the reliability of the connection of the eyepiece barrel 200 and the adjusting seat 600, and avoids the failure to drive the eyepiece barrel 200 to move radially when the adjusting seat 600 moves radially. Among them, the locking structure 800 can realize the locking of the eyepiece barrel 200 and the adjusting seat 600 through various ways such as clamp, buckle, threaded connection and adhesion.

[0081] In an embodiment, the adjusting seat 600 is provided with a clamp portion 620, the clamp portion 620 is provided with an opening, the clamp portion 620 is sleeved on the outside of the eyepiece barrel 200, the locking structure 800 includes a locking ring 810 and a locking screw 820, the locking ring 810 is sleeved on the outside of the clamp portion 620, one end of the locking screw 820 is arranged in the locking ring 810 and is threadedly connected with the locking ring 810, and the other end of the locking screw 820 abuts against one side of the clamp portion 620 away from the opening.

[0082] With reference to Figure 3 , Figure 5 and Figure 6 In the embodiment of the utility model, the adjusting seat 600 is provided with a clamp portion 620, the clamp portion 620 is sleeved on the outside of the eyepiece barrel 200, the locking structure 800 includes a locking ring 810 and a locking screw 820, the locking ring 810 is sleeved on the outside of the clamp portion 620, the locking screw 820 is threadedly connected with the locking ring 810 and abuts against the locking ring 810, by rotating the locking screw 820, the distance between the locking ring 810 and the clamp portion 620 is increased on the side where the locking screw 820 is arranged, the opposite side of the locking ring 810 tightens the clamp portion 620, the opening on the clamp portion 620 becomes smaller, so that the clamp portion 620 tightly sleeves the eyepiece barrel 200, which improves the firmness of the connection of the adjusting seat 600 and the eyepiece barrel 200 and reduces the possibility of damage or deformation of the flexible eyepiece barrel 200.

[0083] In an embodiment, the support pipe 120 is provided with an avoiding opening 122, and the avoiding opening 122 is used to expose the locking structure 800.

[0084] With reference to Figure 1 and Figure 4 In the embodiment of the utility model, the avoiding opening 122 is arranged on the main body assembly 100, which facilitates the disassembly and assembly operation of the locking structure 800. In the embodiment, the avoiding opening 122 only needs to expose the locking screw 820, which facilitates the adjustment of the locking screw 820 and improves the assembly convenience.

[0085] In an embodiment, the endoscope further comprises:

[0086] An eyepiece seat 900 is connected to and coaxially arranged with the support tube 120, and the eyepiece protection sheet 400 is fixed to an end of the eyepiece seat 900 away from the support tube 120; and

[0087] An outer shell 1000 is sleeved on an outer portion of the support tube 120 at one end, and is sleeved on an outer portion of the eyepiece seat 900 at the other end, and the outer shell 1000 covers the first adjusting assembly 500 and the second adjusting assembly 700.

[0088] With reference to Figures 1 to 3 In the embodiment of the utility model, the endoscope further comprises an eyepiece seat 900 and an outer shell 1000, the eyepiece seat 900 is sleeved on the outer portion of the support tube 120 and is threadedly connected with the support tube 120, the eyepiece protection sheet 400 is installed at an end of the eyepiece seat 900 away from the main body assembly 100, the eyepiece protection sheet 400 is fixed, the position of the eyepiece 300 is adjustable, and the eyepiece 300 and the eyepiece protection sheet 400 are more easily centered. One end of the outer shell 1000 is sleeved on the outer portion of the support tube 120 and is threadedly connected with the support tube 120, the other end of the outer shell 1000 is sleeved on the outer portion of the eyepiece seat 900 and is welded and fixed with the eyepiece seat 900, the outer shell 1000 covers the first adjusting assembly 500 and the second adjusting assembly 700, plays a protective role on the first adjusting assembly 500 and the second adjusting assembly 700, and reduces the possibility that the first adjusting assembly 500 and the second adjusting assembly 700 are moved or damaged, thereby guaranteeing that the eyepiece 300 and the eyepiece protection sheet 400 are centered, the diaphragm structure and the relay system lens 130 are centered, and the service life of the endoscope is prolonged.

[0089] In an embodiment, at least one of the main body assembly 100 and the eyepiece seat 900 is sealingly connected with the outer shell 1000; and / or,

[0090] The endoscope further comprises an eyepiece cover 1100, the eyepiece cover 1100 is sleeved on the outer portion of the eyepiece seat 900 and is connected with the outer shell 1000.

[0091] With reference to Figures 1 to 3 In the embodiment of the utility model, the main body assembly 100 and the eyepiece seat 900 can be sealingly connected with the outer shell 1000, can be realized by means of coating sealant or adding a sealing ring, etc., guaranteeing the internal sealing property of the endoscope, reducing the possibility that moisture in the external environment enters the internal portion of the endoscope, and thereby prolonging the service life of the endoscope.

[0092] With reference to Figures 1 to 3In the embodiment of the utility model, one end of the eyepiece cover 1100 is sleeved outside the eyepiece seat 900 and is in threaded connection with the eyepiece seat 900, the other end of the eyepiece seat 900 is sleeved outside the shell 1000 and covers the connecting place of the shell 1000 and the eyepiece seat 900, on the one hand, the eyepiece cover 1100 plays a protective role for the eyepiece protection sheet 400, guarantees the sealing property around the eyepiece protection sheet 400, on the other hand, plays a protective role for the connecting place of the shell 1000 and the eyepiece seat 900, prolongs the service life of the endoscope.

[0093] In combination Figure 1 And Figure 3 In the embodiment, the specific assembly process of the endoscope is as follows:

[0094] First, the adjusting seat 600 is placed in the assembly cavity 121 of the main body assembly 100;

[0095] Then, the locking ring 810 is sleeved on the clamping hoop part 620 of the adjusting seat 600;

[0096] Then, the eyepiece barrel 200 is installed in the adjusting seat 600, and the axial position of the eyepiece barrel 200 is adjusted by pulling the eyepiece barrel 200;

[0097] Then, the locking screw 820 is screwed with the locking ring 810 through the avoiding opening 122, so that the adjusting seat 600 and the eyepiece barrel 200 are connected into an integral whole;

[0098] Then, the eyepiece seat 900 is installed on the main body assembly 100 in a threaded mode;

[0099] Then, the radial position of the adjusting seat 600 is adjusted by adjusting the three second adjusting pieces 710 in the second adjusting assembly 700, the diaphragm structure in the flexible eyepiece barrel 200 is centered with the image conversion system lens 130, and at this time, the first adjusting assembly 500 is in a relaxed state;

[0100] Then, the aperture condition of the endoscope is observed through the eyepiece protection sheet 400, the three first adjusting pieces 510 in the first adjusting assembly 500 are adjusted until the aperture disappears or is within an acceptable range;

[0101] Then, the shell 1000 is installed on the supporting pipe 120 in a threaded mode;

[0102] Then, the shell 1000 and the eyepiece seat 900 are welded and fixed;

[0103] Finally, the eyepiece cover 1100 is installed on the eyepiece seat 900 in a threaded mode.

[0104] The above merely illustrates the exemplary embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation or direct / indirect application in other related technical fields under the technical concept of the present application and by using the content of the present application specification and drawings are included in the patent protection scope of the present application.

Claims

1. An endoscope eyepiece end structure characterized by comprising: The endoscope includes: a main body assembly including a main body and a support tube connected to the main body, an assembly cavity being formed in the inside of the support tube; a relay lens system lens arranged in the assembly cavity and close to the main body; an ocular tube arranged in the assembly cavity and opposite to the relay lens system lens; an ocular arranged at one end of the ocular tube away from the relay lens system lens; an ocular protective sheet arranged at one side of the ocular away from the relay lens system lens; and a first adjusting assembly arranged on the support tube, used for adjusting the radial position of the ocular tube so that the ocular is aligned with the ocular protective sheet. The first adjusting assembly includes at least three first adjusting members, the at least three first adjusting members are distributed at intervals along the circumference of the support tube, the first adjusting members are arranged in the side wall of the support tube and abut against the outer wall of the ocular tube, and the first adjusting members can move radially so that the radial position of the ocular tube is adjustable.

2. The endoscope eyepiece end structure of claim 1, wherein The support tube is provided with a threaded hole communicating with the assembly cavity, the first adjusting member is arranged in the threaded hole and is threadedly connected with the threaded hole; and / or 3. The endoscope eyepiece end structure of claim 2, wherein The first adjusting assembly includes three first adjusting members, the three first adjusting members are distributed at equal intervals along the circumference of the assembly cavity. One end of the ocular tube towards the relay lens system lens is provided with an aperture structure, the endoscope further includes an adjusting seat, one end of the adjusting seat is arranged in the main body, and the other end of the adjusting seat is connected to one end of the ocular tube provided with the aperture structure; 4. The endoscope eyepiece structure of any one of claims 1 to 3, wherein The material of the ocular tube is a flexible material. The endoscope ocular end structure further includes a second adjusting assembly, the second adjusting assembly is arranged on the support tube and is drivingly connected with the adjusting seat, used for adjusting the radial position of the adjusting seat so that the aperture structure is aligned with the relay lens system lens.

5. The endoscope eyepiece end structure of claim 4, wherein The second adjusting assembly includes at least three second adjusting members, the at least three second adjusting members are distributed at intervals along the circumference of the support tube, the second adjusting members are arranged in the side wall of the support tube and abut against the outer wall of the adjusting seat, and the second adjusting members can move radially so that the radial position of the adjusting seat is adjustable.

6. The endoscope eyepiece end structure of claim 5, wherein The outer wall of the adjusting seat is provided with a limiting groove, the second adjusting member is inserted into the limiting groove to limit the axial movement of the adjusting seat.

7. The endoscope eyepiece end structure of claim 6, wherein The endoscope ocular end structure further includes a locking structure, the locking structure locks the ocular tube to the adjusting seat.

8. The endoscope eyepiece end structure of claim 4, wherein The adjusting seat is provided with a clamping portion, the clamping portion is provided with an opening, the clamping portion is sleeved on the outside of the ocular tube, the locking structure includes a locking ring and a locking screw, the locking ring is sleeved on the outside of the clamping portion, one end of the locking screw is arranged in the locking ring and is threadedly connected with the locking ring, and the other end of the locking screw abuts against one side of the clamping portion away from the opening; and / or 9. The endoscope eyepiece end structure of claim 8, wherein The support tube is provided with an avoiding opening, the avoiding opening is used for exposing the locking structure. The endoscope ocular end structure further includes:

10. The endoscope eyepiece end structure of claim 5, wherein an ocular seat connected to the support tube and coaxially arranged with the support tube, and the ocular protective sheet is fixed to one end of the ocular seat away from the support tube; and ​ A housing, one end of the housing is sleeved outside the support tube, the other end of the housing is sleeved outside the eyepiece seat, the housing covers the first adjusting assembly and the second adjusting assembly.

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