CN114935807B - Optical focusing locking mechanism capable of resisting load impact - Google Patents
Optical focusing locking mechanism capable of resisting load impact Download PDFInfo
- Publication number
- CN114935807B CN114935807B CN202210621263.9A CN202210621263A CN114935807B CN 114935807 B CN114935807 B CN 114935807B CN 202210621263 A CN202210621263 A CN 202210621263A CN 114935807 B CN114935807 B CN 114935807B
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- focusing
- adjusting sleeve
- locking
- shell
- locking piece
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- 230000003287 optical effect Effects 0.000 title claims abstract description 64
- 230000007246 mechanism Effects 0.000 title claims abstract description 34
- 238000002955 isolation Methods 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims 4
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/023—Mountings, adjusting means, or light-tight connections, for optical elements for lenses permitting adjustment
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Abstract
The invention discloses an optical focusing locking mechanism capable of resisting load impact, which has the structure that: one end of the focusing sliding column is in threaded connection with the optical lens barrel, the other end of the focusing sliding column penetrates through the focusing cam groove, the optical lens barrel is inserted into the shell, the outer adjusting sleeve is in threaded connection with a shaft hole at the left end of the shell and is fixed with the left locking piece through a screw, and the rubber pad is tightly attached to the left locking piece; the inner adjusting sleeve penetrates through the outer adjusting sleeve and is in threaded connection with a shaft hole at the right end of the shell, the right locking piece is fixed on the inner adjusting sleeve through a screw, and the rubber pad is tightly attached to the right locking piece; the rubber pads on the two sides are separated by a spring. The invention adopts the combination of the adjusting sleeve and the locking piece to fix and position the optical lens cone and the shell, so that the optical lens cone and the shell do not rotate relatively after focusing and locking, and the invention has the characteristics of simple structure, convenient operation, good focusing and locking reliability, effective reduction of the stress deformation of the optical lens cone, load impact resistance and the like.
Description
Technical Field
The invention belongs to the technical field of optical instruments, and relates to an optical focusing locking mechanism capable of resisting load impact.
Background
With the development of technology, the requirements on the optical system are increased, so that the optical system is required to have focusing and locking functions, and the focusing and locking reliability is good under the condition of resisting the impact of a certain load under certain specific application conditions. The conventional adjusting and locking device for the optical focusing lens is single in structure, poor in adjusting stability and low in operability, screws are adopted to screw and pressurize, static friction force between the lens barrel is increased, so that the lens barrel is likely to deform or deviate in the pressurizing direction of the screws, an optical axis is inclined, coaxiality is poor, and design parameters of an optical system cannot be guaranteed. Secondly, in some use occasions with load impact, the optical system can generate loosening of the locking device under repeated vibration impact, so that the optical system is out of focus, the use of an optical instrument is seriously influenced, and the scientific research production is greatly influenced, so that the optical system has strong urgent requirements on a focusing locking mechanism with good reliability under the load impact resistance.
Disclosure of Invention
Object of the invention
The purpose of the invention is that: in order to overcome the defects of poor stability, poor load impact resistance, easy deformation, influence on coaxiality and the like of the conventional optical focusing lens, the focusing and locking mechanism for the optical lens is provided.
(II) technical scheme
In order to solve the technical problems, the invention provides an optical focusing locking mechanism capable of resisting load impact, which comprises an optical lens barrel 1, a shell 2, a focusing sliding column 3, a focusing cam groove 4 and a locking component; the optical lens barrel 1 is inserted in the shell 2, the focusing cam grooves 4 are arranged on the shell 2, the number of the focusing slide posts 3 is two, one end of each focusing slide post 3 is in threaded connection with the optical lens barrel 1, and the other end of each focusing slide post passes through the focusing cam grooves 4; the shell 2 is provided with a locking mechanism mounting groove, two ends of the locking mechanism mounting groove are respectively provided with a left end threaded hole and a right end threaded hole, and the locking assembly is arranged in the locking mechanism mounting groove and comprises an outer adjusting sleeve 5, an inner adjusting sleeve 6, a left locking piece 7, a right locking piece 8, a rubber pad 9 and an elastic isolation piece; the right end of the outer adjusting sleeve 5 is in threaded connection with a left threaded hole, and the right end of the outer adjusting sleeve 5 is fixedly connected with a left locking piece 7 through a screw; the inner adjusting sleeve 6 passes through the center of the outer adjusting sleeve 5, the right end of the inner adjusting sleeve is in threaded connection with a threaded hole at the right end of the shell 2, and the right locking piece 8 is fixed on the inner adjusting sleeve 6 through a screw and is positioned at the left side of the threaded hole at the right end; the two rubber pads 9 are oppositely arranged, respectively sleeved on the inner adjusting sleeve 6 and clung to the left locking piece 7 and the right locking piece 8; the hand wheels of the inner adjusting sleeve 6 and the outer adjusting sleeve 5 are rotated clockwise, so that the left locking piece 7 moves rightwards, the right locking piece 8 moves leftwards, and the rubber pad 9 abuts against the optical lens barrel 1, thereby achieving the purpose of locking the optical lens barrel.
(III) beneficial effects
The optical focusing locking mechanism capable of resisting load impact has the following advantages:
(1) The optical lens barrel and the shell are fixed and positioned by adopting the combination of the adjusting sleeve and the locking piece, so that the optical lens barrel and the shell do not rotate relatively after focusing and locking;
(2) By adopting the orthogonal layout of four groups of rubber pads associated with the inner sleeve and the outer sleeve, the stress generated in the contact direction of the rubber pads and the lens barrel is mutually counteracted, and the generated elastic deformation can absorb the impact energy of load;
(3) The device has the characteristics of simple structure, convenient operation, good focusing and locking reliability, effective reduction of the stress deformation of the optical lens barrel, load impact resistance and the like.
Drawings
FIG. 1 is a schematic structural view of an optical focus locking mechanism capable of resisting load impact according to an embodiment of the present invention.
In the figure: the optical lens comprises a 1-optical lens barrel, a 2-shell, a 3-focusing slide column, a 4-focusing cam groove, a 5-outer adjusting sleeve, a 6-inner adjusting sleeve, a 7-left locking piece, a 8-right locking piece, a 9-rubber pad and a 10-spring.
Detailed Description
To make the objects, contents and advantages of the present invention more apparent, the following detailed description of the present invention will be given with reference to the accompanying drawings and examples.
Referring to fig. 1, the optical focusing and locking mechanism capable of resisting load impact of the present embodiment comprises an optical lens barrel 1, a housing 2, a focusing slide column 3, a focusing cam groove 4 and a locking component; the optical lens barrel 1 is inserted in the shell 2, the focusing cam grooves 4 are arranged on the shell 2, the number of the focusing slide posts 3 is two, one end of each focusing slide post 3 is in threaded connection with the optical lens barrel 1, and the other end of each focusing slide post passes through the focusing cam grooves 4; the shell 2 is provided with a locking mechanism mounting groove, two ends of the locking mechanism mounting groove are respectively provided with a left end threaded hole and a right end threaded hole, and the locking assembly is arranged in the locking mechanism mounting groove and comprises an outer adjusting sleeve 5, an inner adjusting sleeve 6, a left locking piece 7, a right locking piece 8, a rubber pad 9 and an elastic isolation piece; the right end of the outer adjusting sleeve 5 is in threaded connection with a left threaded hole, and the right end of the outer adjusting sleeve 5 is fixedly connected with a left locking piece 7 through a screw; the inner adjusting sleeve 6 passes through the center of the outer adjusting sleeve 5, the right end of the inner adjusting sleeve is in threaded connection with a threaded hole at the right end of the shell 2, and the right locking piece 8 is fixed on the inner adjusting sleeve 6 through a screw and is positioned at the left side of the threaded hole at the right end; the two rubber pads 9 are oppositely arranged, respectively sleeved on the inner adjusting sleeve 6 and clung to the left locking piece 7 and the right locking piece 8; the hand wheels of the inner adjusting sleeve 6 and the outer adjusting sleeve 5 are rotated clockwise, so that the left locking piece 7 moves rightwards, the right locking piece 8 moves leftwards, and the rubber pad 9 abuts against the optical lens barrel 1, thereby achieving the purpose of locking the optical lens barrel.
The two locking mechanism mounting grooves are symmetrically arranged about the central axis of the shell 2, the central connecting line of the left end threaded hole and the right end threaded hole is perpendicular to the central axis of the shell 2, and a set of locking assembly is arranged in each locking mechanism mounting groove.
The rubber pads 9 on the two sides are separated by an elastic separator; in this embodiment, the spring 10 is used as the elastic spacer.
The rubber pad 9 is higher than the left locking piece 7 and the right locking piece 8. The rubber pads 9 are symmetrically distributed along the vertical center line of the optical lens barrel 1, and the curvature radius of the bottom surface of the rubber pads 9 is the same as that of the outer surface of the optical lens barrel 1.
The axes of the outer adjusting sleeve 5, the inner adjusting sleeve 6, the left locking piece 7, the right locking piece 8, the rubber pad 9 and the spring 10 are all positioned on the same straight line.
The outer adjusting sleeve 5, the inner adjusting sleeve 6, the left locking piece 7, the right locking piece 8, the rubber pad 9 and the springs 10 are respectively arranged on the upper part and the lower part of the shell 2 in a group and are symmetrically distributed.
The hand wheel of the inner adjusting sleeve 6 and the hand wheel of the outer adjusting sleeve 5 are nested together in a gear meshing manner.
The screw thread of the inner adjusting sleeve 6 is turned in the opposite direction to the screw thread of the outer adjusting sleeve 5. The focusing sliding columns 3 are symmetrically distributed left and right and are distributed among the focusing cam grooves 4, and are uniformly distributed in a ring shape around the center of the outer optical lens barrel 1.
According to the technical scheme, the optical lens barrel and the shell are fixed and positioned by adopting the combination of the adjusting sleeve and the locking piece, so that the optical lens barrel and the shell do not rotate relatively after focusing and locking, and the optical lens barrel focusing and locking device has the characteristics of simple structure, convenience in operation, good focusing and locking reliability, capability of effectively reducing the stressed deformation of the optical lens barrel, load impact resistance and the like.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (10)
1. An optical focusing locking mechanism capable of resisting load impact, which is characterized by comprising: the optical lens barrel (1), the shell (2), the focusing sliding column (3), the focusing cam groove (4) and the locking component; the optical lens barrel (1) is inserted and sleeved in the shell (2), the focusing cam grooves (4) are formed in the shell (2), two focusing slide posts (3) are arranged, one end of each focusing slide post (3) is in threaded connection with the optical lens barrel (1), and the other end of each focusing slide post passes through the focusing cam grooves (4); the shell (2) is provided with a locking mechanism mounting groove, two ends of the locking mechanism mounting groove are respectively provided with a left end threaded hole and a right end threaded hole, and the locking assembly is arranged in the locking mechanism mounting groove and comprises an outer adjusting sleeve (5), an inner adjusting sleeve (6), a left locking piece (7), a right locking piece (8), a rubber pad (9) and an elastic isolation piece; the right end of the outer adjusting sleeve (5) is in threaded connection with a threaded hole at the left end, and the right end of the outer adjusting sleeve (5) is fixedly connected with a left locking piece (7) through a screw; the inner adjusting sleeve (6) passes through the center of the outer adjusting sleeve (5), the right end of the inner adjusting sleeve is in threaded connection with a right end threaded hole of the shell (2), and the right locking piece (8) is fixed on the inner adjusting sleeve (6) through a screw and is positioned at the left side of the right end threaded hole; the two rubber pads (9) are oppositely arranged, respectively sleeved on the inner adjusting sleeve (6) and clung to the left locking piece (7) and the right locking piece (8); the inner adjusting sleeve (6) and the hand wheel of the outer adjusting sleeve (5) are rotated clockwise, so that the left locking piece (7) moves rightwards, the right locking piece (8) moves leftwards, and the rubber pad (9) abuts against the optical lens barrel (1), and the purpose of locking the optical lens barrel is achieved.
2. The optical focusing and locking mechanism capable of resisting load impact according to claim 1, wherein the number of the locking mechanism mounting grooves is two, the locking mechanism mounting grooves are symmetrically arranged about the central axis of the shell (2), the central connecting line of the left threaded hole and the right threaded hole is perpendicular to the central axis of the shell (2), and a set of locking components is arranged in each locking mechanism mounting groove.
3. A load shock resistant optical focus lock mechanism according to claim 2, wherein two said rubber pads (9) are separated by an elastic spacer.
4. A load shock resistant optical focus lock mechanism as claimed in claim 3, wherein said resilient spacer member is a spring (10).
5. A load impact resistant optical focus lock mechanism as claimed in claim 3, wherein the rubber pad (9) has a height greater than the heights of the left lock tab (7) and the right lock tab (8).
6. The optical focusing and locking mechanism capable of resisting load impact according to claim 5, wherein the rubber pads (9) are symmetrically distributed along the vertical center line of the optical lens barrel (1), and the curvature radius of the bottom surface of the rubber pads (9) is the same as the curvature radius of the outer surface of the optical lens barrel (1).
7. The optical focusing and locking mechanism capable of resisting load impact according to claim 6, wherein in each group of locking components, the axes of the outer adjusting sleeve (5), the inner adjusting sleeve (6), the left locking piece (7), the right locking piece (8), the rubber pad (9) and the elastic isolating piece are all positioned on the same straight line.
8. A load shock resistant optical focus lock mechanism as claimed in claim 7, wherein the handwheel of the inner adjustment sleeve (6) is gear-engaged with the handwheel of the outer adjustment sleeve (5).
9. The load shock resistant optical focus lock mechanism as claimed in claim 8, wherein the threads of the inner adjustment sleeve (6) are rotated in opposite directions to the threads of the outer adjustment sleeve (5).
10. The optical focusing locking mechanism capable of resisting load impact according to any one of claims 1-9, wherein the focusing slide posts (3) are distributed symmetrically left and right and between the focusing cam grooves (4) and uniformly distributed in a ring shape around the center of the outer optical lens barrel (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210621263.9A CN114935807B (en) | 2022-06-01 | 2022-06-01 | Optical focusing locking mechanism capable of resisting load impact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210621263.9A CN114935807B (en) | 2022-06-01 | 2022-06-01 | Optical focusing locking mechanism capable of resisting load impact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114935807A CN114935807A (en) | 2022-08-23 |
| CN114935807B true CN114935807B (en) | 2023-11-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210621263.9A Active CN114935807B (en) | 2022-06-01 | 2022-06-01 | Optical focusing locking mechanism capable of resisting load impact |
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| Country | Link |
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| CN (1) | CN114935807B (en) |
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| CN106405777A (en) * | 2016-08-20 | 2017-02-15 | 南京理工大学 | Fusion detection system visible lens optical axis fine adjustment platform |
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| CN111458866A (en) * | 2020-04-30 | 2020-07-28 | 中国科学院西安光学精密机械研究所 | Prism light guide mechanism for optical lens barrel and visual optical axis indicating system |
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| CN114935807A (en) | 2022-08-23 |
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