CN107526231B

CN107526231B - Manual lens cap

Info

Publication number: CN107526231B
Application number: CN201710905772.3A
Authority: CN
Inventors: 范磊; 王富国; 司丽娜; 刘祥意; 王文攀
Original assignee: Changchun Institute of Optics Fine Mechanics and Physics of CAS
Current assignee: Changchun Institute of Optics Fine Mechanics and Physics of CAS
Priority date: 2017-09-29
Filing date: 2017-09-29
Publication date: 2020-05-08
Anticipated expiration: 2037-09-29
Also published as: CN107526231A

Abstract

The invention discloses a manual lens cover, which comprises a lens front lens cone, a cover plate, a clamping groove pin and a locking pin, wherein a groove is arranged on the inner wall of the lens front lens cone, the notch of the groove is vertical to the axis of the lens front lens cone, a plurality of through holes are arranged on the outer wall of the groove, an annular boss is arranged on one side of the cover plate facing the lens front lens cone, a plurality of clamping groove pins are fixed on the annular boss, the length direction of the clamping groove pin is vertical to the axis of the lens front lens cone, the locking pin is arranged on one side of the cover plate far away from the lens front lens cone, the number of the clamping groove pins is the same as that of the through holes, the locking pin is pulled up, the clamping groove pin is aligned with the through holes and pressed down, the clamping groove pin enters the groove, then the clamping groove is rotated until the clamping groove is limited by the side wall of the groove, the locking pin is, thereby avoiding falling off.

Description

Manual lens cap

Technical Field

The invention relates to the technical field of lens covers, in particular to a manual lens cover.

Background

After the assembly, transportation and observation of the middle and small caliber optical lens are finished, a lens cover is required to seal a light passing light path at the front end of the middle and small caliber optical lens, so that the condition that the lens surface is polluted by dust or other falling objects fall into the optical lens from the front lens cone to damage related optical components is prevented. At present, the lens cover is generally divided into an electric mode and a manual mode, and the manual lens cover is generally adopted under the condition of no special requirement.

When the conventional manual lens cover vibrates greatly or is operated by people by mistake, the lens cover can loosen and rotate reversely to fall off.

Therefore, how to provide a manual lens cover to avoid dropping is a technical problem that needs to be solved by those skilled in the art.

Disclosure of Invention

Accordingly, the present invention is directed to a manual lens cover to prevent falling off.

In order to achieve the purpose, the invention provides the following technical scheme:

a manual lens cap comprises a lens front lens cone, a cover plate, a clamping groove pin and a locking pin, wherein,

the inner wall of the lens front lens cone is provided with a groove, the notch of the groove is vertical to the axis of the lens front lens cone, the outer wall of the groove is provided with a plurality of through holes,

an annular boss is arranged on one side of the cover plate facing the lens front lens barrel, a plurality of clamping groove pins are fixed on the annular boss, the length direction of the clamping groove pins is vertical to the axis of the lens front lens barrel, the locking pin column is arranged on one side of the cover plate far away from the lens front lens barrel,

the number of the clamping groove pins is the same as that of the through holes,

the locking pin is pulled up, the clamping groove pin is aligned to the through hole and pressed down, the clamping groove pin enters the groove, then the locking pin rotates in the groove until the locking pin is limited by the side wall of the groove, the locking pin is pressed down and inserted into the through hole, and the cover plate is fixed on the lens front lens barrel and cannot rotate.

Preferably, a return spring is provided inside the lock pin.

Preferably, the locking pin has a self-locking device.

Preferably, the cover plate is provided with a pin connection transition seat, and the locking pin is arranged on the pin connection transition seat.

Preferably, the above manual lens cover further includes a groove ring, the groove ring has the groove thereon, and the groove ring is fixed on the lens front barrel.

Preferably, the number of the through holes is three.

Preferably, the through holes are uniformly distributed in the circumferential direction.

Preferably, the above manual lens cover further includes a handle disposed on a side of the cover plate away from the front lens barrel.

Preferably, the handles are two and evenly distributed in the circumferential direction.

The manual lens cover provided by the invention comprises a lens front lens barrel, a cover plate, a clamping groove pin and a locking pin, wherein a groove is arranged on the inner wall of the lens front lens barrel, the notch of the groove is vertical to the axis of the lens front lens barrel, a plurality of through holes are arranged on the outer wall of the groove, an annular boss is arranged on one side of the cover plate facing the lens front lens barrel, a plurality of clamping groove pins are fixed on the annular boss, the length direction of the clamping groove pins is vertical to the axis of the lens front lens barrel, the locking pin column is arranged on one side of the cover plate far away from the lens front lens barrel, the number of the clamping groove pins is the same as that of the through holes, the locking pin is pulled up, the clamping groove pin is aligned with the through hole and pressed down, so that the clamping groove pin enters the groove, and then rotates in the groove until being limited by the side wall of the groove, and the locking pin is pressed down and inserted into the through hole, and the cover plate is fixed on the lens front lens barrel and cannot rotate. Thereby avoiding falling off.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic side view of a manual lens cover according to an embodiment of the present invention;

FIG. 2 is an enlarged view of part A of FIG. 1;

fig. 3 is a schematic structural diagram of a manual lens cover plate according to an embodiment of the present invention before the manual lens cover plate reaches a position limit;

fig. 4 is a schematic structural diagram of the manual lens cover plate according to the embodiment of the present invention after the manual lens cover plate is limited.

In the above FIGS. 1-4:

lens front lens barrel 1, recess ring 2, apron 3, draw-in groove pin 4, locking pin 5, pin connection transition seat 6, handle 7, recess 8.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 4, fig. 1 is a schematic side view of a manual lens cover according to an embodiment of the present invention; FIG. 2 is an enlarged view of part A of FIG. 1; fig. 3 is a schematic structural diagram of a manual lens cover plate according to an embodiment of the present invention before the manual lens cover plate reaches a position limit; fig. 4 is a schematic structural diagram of the manual lens cover plate according to the embodiment of the present invention after the manual lens cover plate is limited.

The manual lens cover provided by the embodiment of the invention comprises a lens front lens cone 1, a cover plate 3, a slot pin 4 and a locking pin 5, wherein a groove 8 is arranged on the inner wall of the lens front lens cone 1, the notch of the groove 8 is vertical to the axis of the lens front lens cone 1, a plurality of through holes are arranged on the outer wall of the groove 8, an annular boss is arranged on one side of the cover plate 3 facing to the lens front lens cone 1, a plurality of slot pins 4 are fixed on the annular boss, the length direction of the slot pins 4 is vertical to the axis of the lens front lens cone 1, the locking pin 5 is arranged on one side of the cover plate 3 far away from the lens front lens cone 1, the number of the slot pins 4 is the same as that of the through holes, the locking pin 5 is pulled up, the slot pins 4 are aligned to the through holes and pressed down, so that the slot pins 4 enter the groove 8, then the locking pin is rotated in the groove 8 until the locking pin is limited, the cover plate 3 is fixed on the lens front barrel 1 and can not rotate. Thereby avoiding falling off.

Wherein, locking pin 5 is inside to be provided with reset spring, and locking pin 5 still has self-lock device simultaneously. So can keep the position auto-lock after pulling up through self-lock device after 5 pull-ups of locking pin, can not kick-back and go back, after apron 3 rotates spacing, trigger self-lock device, locking pin 5 rebounds under reset spring's effect and resets.

Wherein, be provided with pin joint transition seat 6 on the apron 3, locking pin 5 sets up on pin joint transition seat 6. The manual lens cover further comprises a groove ring 2, a groove 8 is formed in the groove ring 2, and the groove ring 2 is fixed on the lens front lens barrel 1. The through-holes can be three, and the through-holes are evenly distributed in the circumferential direction.

The above-mentioned manual lens cover further includes a handle 7 disposed on a side of the cover plate 3 away from the front lens barrel 1. The rotation of the cover plate 3 can be better driven by the handle 7. The handles 7 are two and are evenly distributed in the circumferential direction.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A manual lens cap is characterized by comprising a lens front lens cone, a cover plate, a clamping groove pin and a locking pin, wherein,

pulling up the locking pin, aligning the clamping groove pin with the through hole and pressing down the clamping groove pin to enable the clamping groove pin to enter the groove, then rotating in the groove until the clamping groove pin is limited by the side wall of the groove, pressing down the locking pin to insert the through hole, fixing the cover plate on the lens front lens cone and enabling the cover plate not to rotate,

a return spring is arranged in the locking pin,

the locking pin is provided with a self-locking device,

the cover plate is provided with a pin connecting transition seat, the locking pin is arranged on the pin connecting transition seat,

the lens barrel further comprises a groove ring, the groove ring is provided with the groove and fixed on the lens front lens barrel,

the through holes are uniformly distributed in the circumferential direction,

the lens barrel further comprises a handle arranged on one side of the cover plate far away from the lens front lens barrel.

2. The manual lens cover of claim 1, wherein the through-holes are three.

3. The manual lens cover of claim 1, wherein the handles are two and evenly distributed in a circumferential direction.