CN212873066U

CN212873066U - Endoscope lens module

Info

Publication number: CN212873066U
Application number: CN202021202690.6U
Authority: CN
Inventors: 刘谦; 马骁萧; 付玲; 郑刚; 冯宇
Original assignee: Hainan University
Current assignee: Hainan University
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-04-02
Anticipated expiration: 2030-06-24
Also published as: WO2021259259A1

Abstract

The utility model discloses an endoscope lens module, which comprises a camera shooting component, a shapeable hose and a focusing component, wherein the camera shooting component comprises a lens cone, a slide bar, a slide block, a tension spring, a first convex lens and a second convex lens, one end of the tension spring is fixedly connected with the lens cone, the other end of the tension spring is fixedly connected with the slide block, the first convex lens is arranged in the opening of the lens cone, and the second convex lens is positioned in the lens cone and is fixedly connected with the slide block; one end of the shapeable hose is fixedly connected with the lens cone; the focusing assembly comprises an adjusting cylinder, a fixing shaft, a wire cylinder and a pull rope, one end of the pull rope is wound on the wire cylinder, and the other end of the pull rope is fixedly connected with the sliding block. The utility model provides a technical scheme's beneficial effect is: the slide block fixed with the second convex lens is connected with one end of the pull rope, the other end of the pull rope is wound on the wire barrel, the pull rope is wound or unwound through the wire barrel, and the position of the second convex lens is adjusted through the pull spring matched with the pull rope, so that the focal length can be adjusted in real time.

Description

Endoscope lens module

Technical Field

The utility model belongs to the technical field of the endoscope technique and specifically relates to an endoscope camera lens module is related to.

Background

Endoscopes are mainly used in medical and industrial applications, and are often used for medical examination, minimally invasive surgery, equipment maintenance, and the like. In medical inspection, minimally invasive surgery and equipment maintenance, the focal length of the endoscope lens module is often required to be adjusted. Chinese utility model patent with publication number CN209198743U discloses a maintenance dismounting device for optical endoscope, can adjust the focus of endoscope, however, because directly set up focus adjusting device on the lens cone in this technical scheme, and the lens cone is in patient's health or wait to detect the object inside when in-service use, is difficult to adjust the focus in real time when using to practical application effect is not good.

SUMMERY OF THE UTILITY MODEL

Accordingly, there is a need for an endoscope lens module that can adjust the focal length of an endoscope in real time during use.

An endoscope lens module comprising: a camera shooting component, a shapeable hose and a focusing component,

the camera shooting assembly comprises a lens barrel, a sliding rod, a sliding block, a tension spring, a first convex lens and a second convex lens, wherein the sliding rod is fixed in the lens barrel, the extending direction of the sliding rod is parallel to the length direction of the lens barrel, the sliding block is in sliding connection with the sliding rod, one end of the tension spring is fixedly connected with the lens barrel, the other end of the tension spring is fixedly connected with the sliding block, the first convex lens is arranged in a barrel opening of the lens barrel, and the second convex lens is located in the lens barrel and is fixedly connected with the sliding block;

one end of the shapeable hose is fixedly connected with the lens cone;

the focusing assembly comprises an adjusting barrel, a fixed shaft, a line barrel and a pull rope, one end of the adjusting barrel is fixedly connected with the other end of the shapable hose, the fixed shaft is fixed in the adjusting barrel, the fixed shaft extends along the axis direction of the adjusting barrel, the line barrel is sleeved on the fixed shaft and is rotatably connected with the fixed shaft, one end of the pull rope is wound on the line barrel, and the other end of the pull rope is fixedly connected with the sliding block.

Compared with the prior art, the utility model provides a technical scheme's beneficial effect is: the slide block fixed with the second convex lens is connected with one end of the pull rope, the other end of the pull rope is wound on the wire barrel, the pull rope is wound or unwound through the wire barrel, and the position of the second convex lens is adjusted through the pull spring matched with the pull rope, so that the focal length can be adjusted in real time.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of an endoscope lens module according to the present invention;

FIG. 2 is a schematic diagram of the construction of the camera assembly of FIG. 1;

FIG. 3 is a schematic diagram of the focusing assembly of FIG. 1;

FIG. 4 is a cross-sectional view taken along section A-A of FIG. 3;

in the figure: 1-camera component, 2-shapeable hose, 3-focusing component, 11-lens cone, 111-accommodating groove, 112-guide hole, 12-slide bar, 13-slide block, 14-tension spring, 15-first convex lens, 16-second convex lens, 31-adjusting cylinder, 32-fixed shaft, 33-line cylinder, 34-pull rope, 35-rotating device, 351-shaft sleeve, 352-pressure spring, 353-press block, 3531-limit bulge, 354-L rod, 3541-vertical rod, 3542-horizontal rod, 35421-pin hole, 355-gear ring, 36-positioning pin, 37-protective cover and 38-guide pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, the present invention provides an endoscope lens module, which includes a camera module 1, a settable hose 2 and a focusing module 3.

Referring to fig. 1 and 2, the image pickup assembly 1 includes a lens barrel 11, a slide rod 12, a slider 13, a tension spring 14, a first convex lens 15 and a second convex lens 16, the slide rod 12 is fixed in the lens barrel 11, an extending direction of the slide rod 12 is parallel to a length direction of the lens barrel 11, the slider 13 is slidably connected to the slide rod 12, one end of the tension spring 14 is fixedly connected to the lens barrel 11, the other end of the tension spring 14 is fixedly connected to the slider 13, the first convex lens 15 is installed in a barrel opening of the lens barrel 11, and the second convex lens 16 is located in the lens barrel 11 and is fixedly connected to the slider 13. In this embodiment, the tension spring 14 is sleeved on the sliding rod 12, the number of the sliding rods 12 and the number of the sliding blocks 13 are two and are in one-to-one correspondence, and two ends of the second convex lens 16 are respectively fixedly connected with the two sliding blocks 13.

Referring to fig. 1, one end of the shapeable hose 2 is fixedly connected to the lens barrel 11.

Referring to fig. 1 and 3, the focusing assembly 3 includes an adjusting cylinder 31, a fixing shaft 32, a thread cylinder 33 and a pulling rope 34, wherein one end of the adjusting cylinder 31 is fixedly connected to the other end of the shapeable hose 2, the fixing shaft 32 is fixed in the adjusting cylinder 31, the fixing shaft 32 extends along the axial direction of the adjusting cylinder 31, the thread cylinder 33 is sleeved on the fixing shaft 32 and rotatably connected to the fixing shaft 32, one end of the pulling rope 34 is wound around the thread cylinder 33, and the other end of the pulling rope 34 is fixedly connected to the slider 13.

When the endoscope lens module provided by the utility model is used, the pull rope 34 is taken up by rotating the wire barrel 33, so that the slide block 13 is pulled to move towards the direction far away from the first convex lens 15, the distance between the first convex lens 15 and the second convex lens 16 is increased, and the focal length is increased; the rotary bobbin 33 releases the pull cord 34, and the slider 13 moves in a direction approaching the first convex lens 15 by the restoring force of the tension spring 14, thereby reducing the distance between the first convex lens 15 and the second convex lens 16, and thus reducing the focal length. Since the bobbin 33 is located outside the patient's body or the object to be examined, the focal length can be adjusted in real time when in use.

Further, referring to fig. 3 and 4, the focusing assembly 3 further includes a rotating device 35, the rotating device 35 includes a sleeve 351, a pressure spring 352, a pressing block 353, an L-shaped rod 354 and a gear ring 355, the sleeve 351 is sleeved on the fixed shaft 32 and is rotatably connected with the fixed shaft 32; one end of the pressure spring 352 is fixedly connected with the shaft sleeve 351; one end of the pressing block 353 is fixedly connected with the other end of the pressure spring 352, and a limiting protrusion 3531 is formed at the other end of the pressing block 353; the L-shaped rod 354 comprises a vertical rod 3541 and a cross rod 3542 which are fixedly connected, the vertical rod 3541 is parallel to the fixed shaft 32, the vertical rod 3541 is fixedly connected with the wire barrel 33, and the cross rod 3542 is connected with the pressing block 353; the gear ring 355 has internal gear teeth, the gear ring 355 is fixedly connected to the adjusting cylinder 31, and when the pressure spring 352 is in a free state, the limit protrusion 3531 is embedded between two adjacent internal gear teeth of the gear ring 355. In this embodiment, the number of the pressure spring 352, the pressing blocks 353 and the L-shaped rods 354 is two, and the two pressing blocks 353 and the L-shaped rods 354 are arranged in one-to-one correspondence, when the device is used, the two pressing blocks 353 are pinched and pressed inwards, so that the pressure spring 352 is contracted, the limiting protrusions 3531 are far away from the gear ring 355, the two pressing blocks 353 are rotated, the pressing blocks 353 drive the L-shaped rods 354 to rotate, the L-shaped rods 354 drive the wire drums 33 to rotate, so that the pulling ropes 34 are wound or unwound, when the two pressing blocks 353 are loosened, the pressure spring 352 is reset, the limiting protrusions 3531 are embedded between two adjacent inner gear teeth of the.

Preferably, referring to fig. 3 and 4, a pin hole 35421 is formed in the crossbar 3542 and extends along the length direction of the crossbar 3542; the rotating device 35 further comprises a positioning pin 36, one end of the positioning pin 36 is fixedly connected with the pressing block 353, the other end of the positioning pin 36 is inserted into the pin hole 35421, when the two pressing blocks 353 are pinched and pressed inwards in use, the positioning pin 36 further penetrates into the pin hole 35421, and the pressing block 353 cannot deviate under the matching of the positioning pin 36 and the pin hole 35421, so that the stability of the device is improved.

Preferably, referring to fig. 3, the focusing assembly 3 further includes a protective cover 37, and a center of the protective cover 37 is fixedly connected to the fixed shaft 32.

Preferably, referring to fig. 3, the focusing assembly 3 further includes a guide tube 38, the guide tube 38 is fixed on an inner wall of the adjusting cylinder 31, the pull rope 34 passes through the guide tube 38, and the guide tube 38 is used for limiting the pull rope 34.

Preferably, referring to fig. 2, an accommodating groove 111 extending along a length direction of the lens barrel 11 is formed in a side wall of the lens barrel 11, and the sliding rod 12, the sliding block 13 and the tension spring 14 are all located in the accommodating groove 111, so as to prevent the influence on the optical path.

Preferably, referring to fig. 3, a guide hole 112 extending along the length direction of the lens barrel 11 is formed in the side wall of the lens barrel 11, the guide hole 112 is communicated with the accommodating groove 111, the pull rope 34 passes through the guide hole 112, and the guide hole 112 is used for limiting the pull rope 34.

For better understanding of the present invention, the following will explain the working process of the endoscope lens module provided by the present invention in detail with reference to fig. 1 to 4: when the telescopic type wire drawing device is used, the two pressing blocks 353 are pinched and squeezed inwards, the pressure spring 352 is contracted, the limiting protrusion 3531 is far away from the gear ring 355, the two pressing blocks 353 are rotated, the pressing blocks 353 drive the L-shaped rod 354 to rotate, the L-shaped rod 354 drives the wire barrel 33 to rotate, and therefore the wire drawing rope 34 is drawn, the sliding block 13 is pulled by the wire drawing rope 34 to move towards the direction far away from the first convex lens 15, the distance between the first convex lens 15 and the second convex lens 16 is increased, and therefore the focal length is increased; the two pressing blocks 353 are pinched, the pressing blocks 353 are pressed inwards, and the pressing blocks 353 are rotated in the opposite direction, so that the bobbin 33 is rotated in the opposite direction, the wire is paid out from the pull rope 34, and the slider 13 is moved in the direction close to the first convex lens 15 under the action of the restoring force of the tension spring 14, so that the distance between the first convex lens 15 and the second convex lens 16 is reduced, and the focal length is reduced. Since the bobbin 33 is located outside the patient's body or the object to be examined, the focal length can be adjusted in real time when in use.

To sum up, the utility model discloses a connect the slider 13 that is fixed with second convex lens 16 with the one end of stay cord 34, with the other end of stay cord 34 around locating spool 33, receive line or unwrapping wire to stay cord 34 through spool 33, adjust the position of second convex lens 16 through extension spring 14 cooperation stay cord 34 to but real-time focus adjustment.

The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An endoscope lens module, comprising: a camera shooting component, a shapeable hose and a focusing component,

one end of the shapeable hose is fixedly connected with the lens cone;

2. The endoscopic lens module of claim 1, wherein the focusing assembly further comprises a rotating means, the rotating means comprising a bushing, a compression spring, a pressing block, an L-shaped rod, and a gear ring,

the shaft sleeve is sleeved on the fixed shaft and is rotationally connected with the fixed shaft;

one end of the pressure spring is fixedly connected with the shaft sleeve;

one end of the pressing block is fixedly connected with the other end of the pressure spring, and a limiting bulge is formed at the other end of the pressing block;

the L-shaped rod comprises a vertical rod and a transverse rod which are fixedly connected, the vertical rod is parallel to the fixed shaft, the vertical rod is fixedly connected with the bobbin, and the transverse rod is connected with the pressing block;

the gear ring is provided with inner gear teeth and is fixedly connected to the adjusting cylinder, and when the pressure spring is in a free state, the limiting protrusion is embedded between two adjacent inner gear teeth of the gear ring.

3. The endoscope lens module of claim 2, wherein the rail has a pin hole formed therein extending along a length of the rail;

the rotating device further comprises a positioning pin, one end of the positioning pin is fixedly connected with the pressing block, and the other end of the positioning pin is inserted into the pin hole.

4. The endoscopic lens module as defined in claim 1, wherein said focusing assembly further comprises a protective cover, a center of said protective cover being fixedly connected to said stationary shaft.

5. The endoscopic lens module as defined in claim 1, wherein said focusing assembly further comprises a guide tube fixed to an inner wall of said adjustment barrel, said pull cord passing through said guide tube.

6. The endoscope lens module as defined in claim 1, wherein a receiving groove extending along a length direction of the lens barrel is formed on a side wall of the lens barrel, and the sliding rod, the sliding block and the tension spring are all located in the receiving groove.

7. The endoscope lens module of claim 6, wherein a guide hole extending along a length direction of the lens barrel is formed in a side wall of the lens barrel, the guide hole communicates with the receiving groove, and the pulling rope passes through the guide hole.