CN207742400U - A kind of focus adjusting mechanism and endoscope - Google Patents
A kind of focus adjusting mechanism and endoscope Download PDFInfo
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- CN207742400U CN207742400U CN201721801319.XU CN201721801319U CN207742400U CN 207742400 U CN207742400 U CN 207742400U CN 201721801319 U CN201721801319 U CN 201721801319U CN 207742400 U CN207742400 U CN 207742400U
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- shaft
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- limiting slot
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Abstract
The utility model is related to detection device technology fields, provide a kind of focus adjusting mechanism and endoscope, focus adjusting mechanism includes shaft and mobile lens barrel, mobile eyeglass is installed on mobile lens barrel, it is provided with limiting slot on the outer wall of shaft, the axial distance of the both ends of limiting slot to the same end of shaft differs, a protrusion is provided on mobile lens barrel, one end of the protrusion is located in limiting slot, when shaft rotates, limiting slot is rotated with shaft, protrusion can be slided along limiting slot, to drive mobile lens barrel to be moved along the axis direction of shaft, realize the movement of mobile lens position, to focus.The utility model endoscope includes object lens and above-mentioned focus adjusting mechanism, so as to focus to endoscope, facilitates look at smaller objective body.
Description
Technical field
The utility model is related to detection device technology field more particularly to a kind of focus adjusting mechanisms and endoscope.
Background technology
Endoscope is widely used in medical field and industrial circle, commonly used in stretching into pipeline or body cavity,
It is bent to all directions by operating its cephalic par, the light to be detected to pipeline or body cavity, and pass through cephalic par
System obtains the image of corresponding site, to be observed, be shot and be diagnosed.Only there are one burnt for conventional endoscope at present
Point can not understand smaller objective body and identify, influence testing result, be particularly applied to medical skill in actual use
Art field cannot understand and identify smaller pathological characters and its situation, will influence the inspection to disease and therapeutic effect.Cause
This, it is desirable to provide a kind of new technical solution is to solve above-mentioned problems of the prior art.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of focus adjusting mechanism of adjustable focus and endoscopes.
Technical solution is used by the utility model solves above-mentioned technical problem：
Provide a kind of focus adjusting mechanism, it is characterised in that：Including shaft and mobile lens barrel, it is equipped on the mobile lens barrel
Eyeglass is moved, limiting slot, the both ends to the same end of the shaft of the limiting slot are provided on the outer wall of the shaft
Axial distances etc. are provided with a protrusion on the mobile lens barrel, and one end of the protrusion is located in the limiting slot, when described
When shaft rotates, the protrusion can slide along the limiting slot, so drive the mobile lens barrel along the shaft axial direction into
Row movement.
As an improvement of the above technical solution, the part between the both ends of the limiting slot is in the shape of a spiral.
As a further improvement of the above technical scheme, one end of the mobile lens barrel is the first mounting portion of tubular, separately
One end is the second mounting portion for installing the mobile eyeglass, and first mounting portion is rotatably sleeved on the shaft
On, the inner wall in first mounting portion is arranged in the protrusion.
As a further improvement of the above technical scheme, it is provided with a through-hole on the barrel of first mounting portion, it is described
A pin is removably secured on through-hole, the tail end of the pin passes through the through-hole and in the inner wall of first mounting portion
Form the protrusion.
A kind of endoscope is additionally provided, including objective tube and above-mentioned focus adjusting mechanism, the front end of the objective tube are equipped with
Object lens, the object lens and the mobile eyeglass are coaxial.
As an improvement of the above technical solution, further include focusing outer barrel, be provided with limited step in the focusing outer barrel, institute
It states limited step to be located on the motion track of the mobile lens barrel, for limiting the mobile lens barrel.
As a further improvement of the above technical scheme, the focusing outer barrel includes a cavity, after the objective tube
End plugs in the cavity.
As a further improvement of the above technical scheme, the rear end of the objective tube is located at the moving rail of the mobile lens barrel
On mark, for being limited to the mobile lens barrel.
As a further improvement of the above technical scheme, further include microscope base, the focusing outer barrel is fixedly mounted on the mirror
On seat, prism is installed on the microscope base, the prism is located along the same line with the objective tube, the mobile eyeglass.
As a further improvement of the above technical scheme, further include bourdon tube, the bourdon tube is fixed with the shaft to be connected
It connects, rotating the bourdon tube can drive the shaft to rotate.
The utility model has the beneficial effects that：
Focus adjusting mechanism includes shaft and mobile lens barrel, is equipped with mobile eyeglass on mobile lens barrel, is arranged on the outer wall of shaft
There are limiting slot, the axial distance of limiting slot both ends to the same end of shaft to differ, a protrusion, the protrusion are provided on mobile lens barrel
One end be located in limiting slot, when shaft rotates, limiting slot is rotated with shaft, and protrusion can be slided along limiting slot, to drive
Mobile lens barrel is moved along the axis direction of shaft, the movement of mobile lens position is realized, to focus.In the utility model
Sight glass includes object lens and above-mentioned focus adjusting mechanism, so as to focus to endoscope, facilitates look at smaller objective body.
Description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used briefly describes：
Fig. 1 is the sectional view of the utility model focus adjusting mechanism one embodiment；
Fig. 2 is the sectional view of head end structure one embodiment in the utility model endoscope；
Fig. 3 is the schematic diagram that mobile eyeglass reaches close shot position in the utility model endoscope；
Fig. 4 is the schematic diagram that mobile eyeglass reaches distant view position in the utility model endoscope.
Specific implementation mode
The technique effect of the design of the utility model, concrete structure and generation is carried out below with reference to embodiment and attached drawing
It clearly and completely describes, to be completely understood by the purpose of this utility model, feature and effect.Obviously, described embodiment
It is a part of the embodiment of the utility model, rather than whole embodiments, it is based on the embodiments of the present invention, the skill of this field
The other embodiment that art personnel are obtained without creative efforts belongs to the model of the utility model protection
It encloses.In addition, all connection/connection relations arrived involved in patent, not singly refer to component and directly connect, and referring to can be according to specific
Performance, by adding or reducing couple auxiliary, to form more preferably coupling structure.In the utility model it is involved it is upper,
Under, the orientation such as left and right description be only for the mutual alignment relation of each component part of the utility model in attached drawing.
Each technical characteristic in the utility model, can be with combination of interactions under the premise of not conflicting conflict.
Fig. 1 is the sectional view of the utility model focus adjusting mechanism one embodiment, and with reference to figure 1, focus adjusting mechanism 100 includes shaft
110 and mobile lens barrel 120, mobile eyeglass 130 is installed on mobile lens barrel 120, limiting slot is provided on the outer wall of shaft 110
111, the axial distance of both ends to the 110 same end of shaft of limiting slot 111 differs so that there are one at the both ends of limiting slot 111
Fixed distance, in the present embodiment, the part between the both ends of limiting slot 111 is in the shape of a spiral.It is convex it to be provided with one on mobile lens barrel 120
141 are played, one end of protrusion 141 is located in limiting slot 111, and when shaft 110 rotates, limiting slot 111 is rotated with shaft 110, convex
Playing 141 can slide along limiting slot 111, so that limiting slot 111 pushes protrusion to move along a straight line.
One end of mobile lens barrel 120 is the first mounting portion 121 of tubular, and the other end is the second mounting portion 122, mobile eyeglass
130 are mounted on the second mounting portion 122, and the first mounting portion 121, which is rotatably sleeved in shaft 110, is provided with limiting slot 111
Part, above-mentioned raised 141 are arranged the inner wall in the first mounting portion 121, and one end of protrusion 141 is caught in limiting slot 111, when turning
When axis 110 rotates, the outer wall of shaft 110 is rotated relative to the inner wall of the first mounting portion 121 so that limiting slot 111 is with shaft
It rotates and rotates, protrusion 141 is located in limiting slot 111, and when limiting slot 111 rotates, edge pushes raised 141 axis along shaft
Line direction is moved, and it is linear motion to make convert rotational motion so that mobile lens barrel 120 is moved along the axis direction of shaft 110, real
The linear motion for now moving eyeglass 130, to focus, to adjust the endoscope depth of field.
In the present embodiment, it is provided with a through-hole on the barrel of the first mounting portion 121, one has been removably secured on the through-hole
The tail end of pin 140, pin 140 passes through the through-hole and is pierced by the inner wall of the first mounting portion 121, forms above-mentioned raised 141.Pin
The width of the diameter and limiting slot 111 of following closely 140 tail ends, which cooperates, to be arranged, and the width of limiting slot 111 should be slightly bigger than 140 tail of pin
The diameter at end so that the sliding in limiting slot 111 of pin tail end is smooth, avoids 111 width of limiting slot too small so that pin 140 is transported
Dynamic clamping stagnation.Part between the both ends of limiting slot 111 is in the shape of a spiral so that the convert rotational motion of shaft is straight at pin 140
Line moves.
Fig. 2 is the sectional view of head end structure one embodiment in the utility model endoscope, and endoscope includes head end structure
And transmission device, transmission device drive head end structure to be bent, to be detected in pipeline or body cavity.As shown in Fig. 2,
Head end structure includes focus adjusting mechanism 100, objective tube 200, head end seat 300, focusing outer barrel 400, microscope base 500 and bourdon tube 600, object
200 front end of lens barrel is equipped with object lens 210, and object lens 210 and mobile eyeglass 130 are coaxial.
Outer barrel 400 of focusing includes a cavity, and focus adjusting mechanism 100 is arranged in the cavity of focusing outer barrel 400, objective tube
200 are mounted on focusing outer barrel 400, and the rear end 230 of objective tube plugs in this cavity, and the front end 220 of objective tube is located at focusing
Outside outer barrel 400.The rear end 230 of objective tube is located on the motion track of the second mounting portion 122, can be carried out to the second mounting portion 122
Limit, to be limited to mobile lens barrel.It is provided with limited step 410 in focusing outer barrel 400, which is located at
On the motion track of first mounting portion 121, for being limited to the first mounting portion 121, to limit mobile lens barrel 120
Position.
Focusing outer barrel 400 is fixedly mounted on microscope base 500, and prism 510, prism 510 and objective tube are equipped on microscope base 500
200, mobile eyeglass 130 is located along the same line so that opticpath all passes through prism 510.
Bourdon tube 600 is fixedly connected with shaft 110 by connector, the rotation of 600 energy band turn axis 110 of rotation spring pipe.
Head end seat 300 is set in outside focusing outer barrel 400 and microscope base 500, and the front end of head end seat 300 is additionally provided with head end cover
310, it can play the role of to objective tube 200 fixed and protect, and correct end structure is protected.
Fig. 3 is that the schematic diagram that mobile eyeglass reaches close shot position in the utility model endoscope works as moving lens with reference to figure 3
Cylinder 120 is moved forward until the rear end 230 of the second mounting portion 122 and objective tube leans so that mobile lens barrel 120 stops forward
Mobile, at this point, mobile lens barrel 120 reaches first position, mobile the distance between eyeglass 130 and object lens 210 are nearest, i.e. moving lens
Piece 130 is in close shot position.
Fig. 4 is that the schematic diagram that mobile eyeglass reaches distant view position in the utility model endoscope works as moving lens with reference to figure 4
Cylinder 120 moves back up to the first mounting portion 121 and leans with limited step 410 so that the mobile stopping of lens barrel 120 moves back
Dynamic, at this point, mobile lens barrel 120 reaches the second position, mobile the distance between eyeglass 130 and object lens 210 are farthest, that is, move eyeglass
130 are in distant view position.
210 position of object lens is constant, and mobile lens barrel 120 can drive mobile eyeglass 130 in above-mentioned first position and the second position
Between move, to adjust the distance between mobile lens barrel 120 and object lens 210, realize focus operations, image can be put
Greatly, it reduces.It solves conventional endoscope in actual use, can not understand the smaller objective body of identification to influence detection knot
The technical issues of fruit, it is particularly suitable for field of medical technology, clearly recognizable smaller pathological characters and its situation improve
The accuracy of inspection is conducive to enhance therapeutic effect.
The preferred embodiment of the utility model is above are only, but the utility model is not restricted to the embodiment, is familiar with
Those skilled in the art can also make a variety of equivalent variations or replacement without departing from the spirit of the present invention, this
Equivalent deformation or replacement are all contained in the application claim limited range a bit.
Claims (10)
1. a kind of focus adjusting mechanism, it is characterised in that：Including shaft and mobile lens barrel, moving lens are installed on the mobile lens barrel
Piece, is provided with limiting slot on the outer wall of the shaft, the both ends of the limiting slot to the same end of the shaft it is axial away from
From differing, a protrusion is provided on the mobile lens barrel, one end of the protrusion is located in the limiting slot, when the shaft is revolved
When turning, the protrusion can be slided along the limiting slot, and then the mobile lens barrel is driven to be moved along the axial direction of the shaft.
2. focus adjusting mechanism according to claim 1, it is characterised in that：Part between the both ends of the limiting slot is helically
Shape.
3. focus adjusting mechanism according to claim 1, it is characterised in that：One end of the mobile lens barrel is the first peace of tubular
Dress portion, the other end are the second mounting portion for installing the mobile eyeglass, and first mounting portion is rotatably sleeved on institute
It states in shaft, the inner wall in first mounting portion is arranged in the protrusion.
4. focus adjusting mechanism according to claim 3, it is characterised in that：It is logical that one is provided on the barrel of first mounting portion
Hole, a pin has been removably secured on the through-hole, and the tail end of the pin passes through the through-hole and in first installation
The inner wall in portion forms the protrusion.
5. a kind of endoscope, it is characterised in that：Including the focus adjusting mechanism described in any one of objective tube and Claims 1 to 4,
The front end of the objective tube is equipped with object lens, and the object lens and the mobile eyeglass are coaxial.
6. endoscope according to claim 5, it is characterised in that：Further include focusing outer barrel, is arranged in the focusing outer barrel
There is limited step, the limited step is located on the motion track of the mobile lens barrel, for limiting the mobile lens barrel
Position.
7. endoscope according to claim 6, it is characterised in that：The focusing outer barrel includes a cavity, the object lens
The rear end of cylinder plugs in the cavity.
8. endoscope according to claim 5, it is characterised in that：The rear end of the objective tube is located at the mobile lens barrel
On motion track, for being limited to the mobile lens barrel.
9. the endoscope according to any one of claim 5~8, it is characterised in that：Further include microscope base, the focusing outer barrel
It is fixedly mounted on the microscope base, prism, the prism and the objective tube, the mobile eyeglass position is installed on the microscope base
In on same straight line.
10. the endoscope according to any one of claim 5~8, it is characterised in that：Further include bourdon tube, the spring
Pipe is fixedly connected with the shaft, and rotating the bourdon tube can drive the shaft to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721801319.XU CN207742400U (en) | 2017-12-21 | 2017-12-21 | A kind of focus adjusting mechanism and endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721801319.XU CN207742400U (en) | 2017-12-21 | 2017-12-21 | A kind of focus adjusting mechanism and endoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207742400U true CN207742400U (en) | 2018-08-17 |
Family
ID=63118853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721801319.XU Active CN207742400U (en) | 2017-12-21 | 2017-12-21 | A kind of focus adjusting mechanism and endoscope |
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| Country | Link |
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| CN (1) | CN207742400U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111528771A (en) * | 2020-03-27 | 2020-08-14 | 浙江大学 | Electronic endoscope imaging objective lens zooming adjusting mechanism |
| WO2021072931A1 (en) * | 2019-10-16 | 2021-04-22 | 深圳迈瑞生物医疗电子股份有限公司 | Endoscopic camera and endoscopic camera system |
| WO2022227884A1 (en) * | 2021-04-29 | 2022-11-03 | 深圳英美达医疗技术有限公司 | Optical zooming device using torque transmission, and endoscope |
| CN116849583A (en) * | 2023-06-30 | 2023-10-10 | 北理工郑州智能科技研究院 | Electric focusing device for endoscope |
-
2017
- 2017-12-21 CN CN201721801319.XU patent/CN207742400U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021072931A1 (en) * | 2019-10-16 | 2021-04-22 | 深圳迈瑞生物医疗电子股份有限公司 | Endoscopic camera and endoscopic camera system |
| CN111528771A (en) * | 2020-03-27 | 2020-08-14 | 浙江大学 | Electronic endoscope imaging objective lens zooming adjusting mechanism |
| CN111528771B (en) * | 2020-03-27 | 2022-02-18 | 浙江大学 | Electronic endoscope imaging objective lens zooming adjusting mechanism |
| WO2022227884A1 (en) * | 2021-04-29 | 2022-11-03 | 深圳英美达医疗技术有限公司 | Optical zooming device using torque transmission, and endoscope |
| CN116849583A (en) * | 2023-06-30 | 2023-10-10 | 北理工郑州智能科技研究院 | Electric focusing device for endoscope |
| CN116849583B (en) * | 2023-06-30 | 2024-06-11 | 北理工郑州智能科技研究院 | Electric focusing device for endoscope |
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