CN114779426A - Focusing locking structure of optical instrument - Google Patents

Abstract

The invention belongs to the technical field of optical instruments, and particularly relates to a focusing and locking structure of an optical instrument, which comprises a locking frame, wherein a guide post is fixed inside the locking frame, a locking ring is connected between the locking frame and the guide post in a sliding manner, a steering groove is formed inside the locking ring, a steering block is connected to one side, close to the guide post, of the steering groove in a sliding manner, a transmission rod is fixed to one side, close to the guide post, of the steering block, a squeezing plate is fixed to one end, far away from the steering block, of the transmission rod, and a reset spring is sleeved outside the transmission rod; the locking ring is pushed to drive the steering block to move, so that the extrusion plate is driven to move until the extrusion plate is in contact with the focusing assembly and locks the focusing assembly, the direction of the locking force applied by the locking structure is consistent with the axis direction of the focusing assembly, the condition of shifting the axis of the focusing assembly cannot be generated, and the condition of applying deflection force to enable the axis of the lens of the optical instrument to deviate is effectively avoided while the focal length is locked.

Description

Focusing locking structure of optical instrument

Technical Field

The invention belongs to the technical field of optical instruments, and particularly relates to a focusing and locking structure of an optical instrument.

Background

In the imaging process of the optical instrument, the focal length needs to be adjusted according to the characteristics of an imaging target object, the environment and other factors, so that the imaging definition of the optical instrument is ensured, the optical instrument is usually locked by a locking device after focusing is completed, the focal length cannot be changed in the subsequent shooting process, and the imaging definition is ensured.

A chinese patent with publication number CN108802950B discloses a focusing and locking structure on a precision optical instrument, which comprises an optical lens barrel, wherein an inner fixing ring and an outer fixing ring are inserted and sleeved on the optical lens barrel, a plurality of studs are screwed on the outer wall of the inner fixing ring, and the outer ends of the studs are screwed and fixed on the outer fixing ring; a plurality of locking rods are inserted into the inner fixing ring in an inserted mode, the locking rods are evenly distributed on the inner fixing ring in an annular mode, a circular arc-shaped locking block is fixed to the inner end of each locking rod, and a groove connector is formed in the mode that the outer end of each locking rod penetrates through the inner fixing ring. The invention can avoid the phenomenon of micromotion displacement when the locking bolt is locked at one side.

In the technical scheme, the locking bolt is pulled to drive the ball on the locking rod to move from the deep clamping groove to the shallow clamping groove, the locking block on the locking rod is driven to lock the optical lens barrel, however, in the process of pulling the locking bolt, a uniform circumferential force cannot be applied through the locking bolt, so that in the process of pulling the locking bolt, a thrust can be simultaneously applied to an optical instrument, the axial line of a fastened part is shifted, and the problems that an imaging local or overall unclear target object deviates from the center of an image and the like are caused; therefore, the invention provides a focusing and locking structure of an optical instrument.

Disclosure of Invention

To remedy the deficiencies of the prior art, at least one of the technical problems set forth in the background is addressed.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a focusing and locking structure of an optical instrument, which comprises a locking frame, wherein a guide post is fixed inside the locking frame, a locking ring is connected between the locking frame and the guide post in a sliding manner, a steering groove is formed inside the locking ring, one side of the steering groove, which is close to the guide post, is connected with a plurality of steering blocks in a sliding manner, the number of the steering blocks is three or more, the steering blocks are distributed in an array manner, transmission rods are fixed on one sides of the steering blocks, which are close to the guide post, the ends of the transmission rods, which are far away from the steering blocks, are fixed with extrusion plates, the number of the extrusion plates is the same as that of the steering blocks, the transmission rods are sleeved with return springs, and empty grooves matched with the extrusion plates are formed inside the guide post; when the device works, the device is arranged outside an optical instrument, so that a focusing assembly of the optical instrument is connected with a guide post through threads, when the focal length needs to be adjusted, the adjusting assembly is rotated to move on the guide post, and when the focusing assembly needs to be locked after the focusing is finished, staff needs to manually push a locking ring, the locking ring can slide in a locking frame after being pushed, and can simultaneously drive a steering block to move in the sliding process of the locking ring, the steering block moves to compress a reset spring to deform the reset spring and then drive a transmission rod to move, the transmission rod moves to further drive an extrusion plate to move until the extrusion plate is contacted with the focusing assembly and applies an extrusion force to lock the extrusion plate, and as the number of the extrusion plates is at least three and distributed in an array manner, the focusing assembly can be simultaneously pressed from multiple directions, and the axle center of the focusing assembly is prevented from deflecting in the clamping process, and the direction of the locking force applied by the locking structure is consistent with the axis direction of the focusing assembly, so that the condition of shifting the axis of the focusing assembly cannot occur, and the condition that the axis of the lens of the optical instrument deviates due to the application of deflection force is effectively avoided while the focal length is locked.

Preferably, a rubber ring is fixed on one side of the locking ring, which is far away from the locking frame, a clamping block is fixed outside the guide column, a limiting block is connected inside the locking frame and above the clamping block in a through manner, and a power storage spring is fixed between the limiting block and the locking frame; the during operation, promote the gliding in-process of locking ring at the staff, the rubber ring can be effectual increase and the staff palm between frictional force, prevent that the staff from taking off the hand, stability when improving the locking, and it can drive the joint piece motion simultaneously at the gliding in-process of locking ring, joint piece motion and stopper contact back, can promote the tensile stopper and hold the power spring back and slide, and the stopper can reset under holding the power spring's effect after the joint piece slides the stopper, at this moment the stopper just can block the joint piece, so just do not need the manual work to lock the operation, compare in traditional mode that needs screw locking operation, this locking mode is more swift and need not be with the help of the instrument, reach the effect of real-time locking.

Preferably, a pull ring is fixed outside the limiting block, and a buffer spring is fixed between the locking ring and the locking frame; the during operation, after optical instrument uses the completion, when needing to readjust the focus, need the manual pulling pull ring of staff to drive the stopper motion for stopper and joint piece separation, at this moment the stopper with the joint piece after the separation locking ring alright normally reset under buffer spring's effect, this process need not be with the help of the instrument equally, thereby reached the effect that resets fast.

Preferably, poke rods are fixed on two sides of the extrusion plate, a knocking ball is fixed at one end, far away from the extrusion plate, of each poke rod, a liquid storage bag is arranged on one side, far away from the extrusion plate, of each knocking ball, the liquid storage bags are installed inside the guide columns, and the upper side and the lower side of each liquid storage bag are connected with communicating pipes in a penetrating manner; during operation, in the process of extrusion plate motion locking, the poke rod can be simultaneously driven to move, the poke rod moves to drive the knocking ball to move to contact with the liquid storage bag and extrude the liquid storage bag, so that lubricating liquid stored in the liquid storage bag can be sprayed out, the sprayed lubricating liquid can lubricate a focusing assembly and a guide column of the optical instrument, and the smooth degree of optical instrument focal length adjustment is improved.

Preferably, a plurality of stirring balls are arranged in the liquid storage bag, the stirring balls are fixedly connected with the liquid storage bag through a connecting rod, and a supporting spring is fixed in the liquid storage bag; the during operation, at the in-process of reservoir deformation, it can drive simultaneously and stir ball motion and mix its inside lubricated liquid to make lubricated liquid more even, improve lubricated effect, and through mutually supporting of supporting spring and communicating pipe, thereby make the reservoir can breathe in after deformation and reset, and then discharge lubricated liquid that can reciprocate, what need explain is that the communicating pipe inside of reservoir both sides all installs the check valve.

Preferably, a buffer cushion is fixed on one side of the extrusion plate, which is far away from the transmission rod, and the buffer cushion is made of sponge material; the during operation, at the in-process of stripper plate and focusing subassembly contact, collision force when can effectual reduction its contact through the blotter, and then the thread of protection focusing subassembly to the blotter can absorb too much lubricated liquid, prevents its overflow locking frame's outside, causes the influence to optical instrument's normal use, at the in-process of blotter and focusing subassembly contact, and it also can be clean its surface.

Preferably, the interior of the extrusion plate is connected with a detection block in a sliding manner, one end of the detection block, which is far away from the cushion pad, is fixed with an alarm ball, one side of the alarm ball, which is far away from the detection block, is provided with a echo ball, and the echo ball is fixedly connected with the extrusion plate through a spring plate; the during operation, at the in-process of stripper plate and focusing subassembly contact, it can drive simultaneously and detect the piece motion, thereby detect the piece motion and drive the motion of alarm ball, make the outside shell fragment reciprocal springing of echo ball until alarm ball and echo ball collision, the echo ball at this moment can be reciprocal and the collision of alarm ball sends the sound to remind staff to lock and target in place, avoid staff to continuously exert pressure and lead to the fact the damage to blotter and screw thread.

Preferably, a hollow groove is formed in the detection block, a suction plug is slidably connected in the hollow groove, a guide rod is fixed on one side, away from the detection block, of the suction plug, the guide rod is in through connection with the detection block, a pair of guide pipes are in through connection with one side, close to the buffer pad, of the detection block, and one-way valves are mounted in the pair of guide pipes; the during operation, before detecting the piece motion, the pilot bar can be earlier one-step and focusing subassembly contact and drive the motion of suction stopper, the inside negative pressure that just can produce of dead slot behind the motion of suction stopper to pump the inside lubricated liquid of blotter through one of them honeycomb duct, can retrieve inside the dead slot with too much lubricated liquid like this, and when the equipment was loosened after the focusing was accomplished, other positions to the focusing subassembly were lubricated through another honeycomb duct secondary discharge to too much lubricated liquid this moment.

Preferably, an oil storage tank is arranged in the locking frame and on one side, away from the clamping block, of the limiting block, liquid is placed in the oil storage tank, a sealing plug is slidably connected to one side, close to the clamping block, of the oil storage tank, a prompting rod is fixed to one side, close to the clamping block, of the sealing plug, and a jacking block is slidably connected to one side, away from the locking ring, of the oil storage tank; the during operation, at the in-process that promotes locking ring locking, the locking ring drives joint piece when joint piece motion joint piece can contact with the suggestion pole, and promote the suggestion pole and drive the motion of closing the stopper, the motion of closing the stopper can promote the inside fluid of oil storage tank, jacking piece can be ejecting under the effect of oil pressure, the clamping-force size of applying to the focusing subassembly can be observed through the distance that jacking piece is ejected, also can play the warning effect to the personnel simultaneously, prevent that the staff from focusing under the condition of not loosening locking structure, optical instrument has been protected.

Preferably, a warning sheet is fixed outside the jacking block, and the warning sheet is made of a reflective material; during operation, the setting of warning piece can reflect outside sunshine, produces the reflection light, and so alright further improvement warning effect needs to explain that the reflection angle of warning piece needs to ensure can not cause the influence to optical instrument's normal use.

The invention has the following beneficial effects:

1. according to the focusing and locking structure of the optical instrument, the steering block is driven to move by pushing the locking ring, so that the extrusion plate is driven to move until the extrusion plate is in contact with the focusing assembly and is locked, the direction of the locking force applied by the locking structure is consistent with the axis direction of the focusing assembly, the condition of stirring the axis of the focusing assembly cannot be generated, and the condition that the axis of a lens of the optical instrument is deviated by applying a deflection force is effectively avoided while the focal length is locked.

2. According to the focusing and locking structure of the optical instrument, the limiting block is separated from the clamping block by manually pulling the pull ring to drive the limiting block to move, the locking ring can be normally reset under the action of the buffer spring after the limiting block is separated from the clamping block, and tools are not needed in the process, so that the effect of quick reset is achieved.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic view of a locking ring according to the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a schematic view of a guide post structure according to the present invention;

FIG. 5 is an enlarged view of a portion of the invention at B in FIG. 4;

FIG. 6 is an enlarged view of a portion of the invention at C of FIG. 5;

FIG. 7 is a schematic structural view of a second embodiment of the locking frame structure of the present invention;

fig. 8 is an enlarged view of a portion of the invention at D in fig. 7.

In the figure: 1. a locking frame; 2. locking a ring; 3. a turning block; 4. a transmission rod; 5. a return spring; 6. a compression plate; 7. a guide post; 8. a rubber ring; 9. a clamping block; 10. a limiting block; 11. a power storage spring; 12. a pull ring; 13. a buffer spring; 14. a poke rod; 15. knocking and hitting the ball; 16. a liquid storage bag; 17. stirring the ball; 18. a cushion pad; 19. detecting a block; 20. an alarm ball; 21. a whispering gallery; 22. a suction plug; 23. a leading rod; 24. a flow guide pipe; 25. a cue stick; 26. closing the plug; 27. an oil storage tank; 28. jacking blocks; 29. a warning sheet.

Detailed Description

The present invention will be further described with reference to the following detailed description so that the technical means, the creation features, the achievement purposes and the effects of the present invention can be easily understood.

Example one

As shown in fig. 1 to 2, a focusing and locking structure of an optical instrument according to an embodiment of the present invention includes a locking frame 1, a guide post 7 is fixed inside the locking frame 1, a locking ring 2 is slidably connected between the locking frame 1 and the guide post 7, a steering groove is formed inside the locking ring 2, a plurality of steering blocks 3 are slidably connected to one side of the steering groove close to the guide post 7, the number of the steering blocks 3 is three or more, the steering blocks are distributed in an array, a transmission rod 4 is fixed to one side of each of the plurality of steering blocks 3 close to the guide post 7, an extrusion plate 6 is fixed to one end of the transmission rod 4 far from the steering block 3, the number of the extrusion plates 6 is the same as the number of the steering blocks 3, a return spring 5 is sleeved outside the transmission rod 4, and a hollow groove adapted to the extrusion plate 6 is formed inside the guide post 7; when the device works, the device is arranged outside an optical instrument, so that a focusing assembly of the optical instrument is connected with a guide post 7 through threads, when the focal length needs to be adjusted, the adjusting assembly is rotated to move on the guide post 7, and when the focusing assembly needs to be locked after the focusing is finished, staff needs to manually push a locking ring 2, the locking ring 2 can slide in a locking frame 1 after being pushed, and simultaneously drives a steering block 3 to move in the sliding process of the locking ring 2, the steering block 3 moves to compress a return spring 5 to deform the return spring and then drive a transmission rod 4 to move, the transmission rod 4 moves to drive an extrusion plate 6 to move until the extrusion plate 6 is contacted with the focusing assembly and applies an extrusion force to lock the focusing assembly, and at least three extrusion plates 6 are distributed in an array manner, so that the focusing assembly can be simultaneously pressed from multiple directions, and the axle center of the focusing assembly is prevented from deflecting in the clamping process, and the direction of the locking force applied by the locking structure is consistent with the axis direction of the focusing assembly, so that the condition of shifting the axis of the focusing assembly cannot occur, and the condition that the axis of the lens of the optical instrument deviates due to the application of a deflection force is effectively avoided while the focal length is locked.

As shown in fig. 2 to fig. 3, a rubber ring 8 is fixed on one side of the locking ring 2 away from the locking frame 1, a clamping block 9 is fixed outside the guide post 7, a limiting block 10 is connected inside the locking frame 1 and above the clamping block 9 in a penetrating manner, and a power storage spring 11 is fixed between the limiting block 10 and the locking frame 1; the during operation, promote the gliding in-process of locking ring 2 at the staff, rubber ring 8 can be with the frictional force between effectual increase and the staff palm, prevent that the staff from taking off the hand, stability when improving locking, and it can drive joint piece 9 motion simultaneously at the gliding in-process of locking ring 2, joint piece 9 motion and stopper 10 contact back, can promote stopper 10 tensile and hold sliding behind the power spring 11, and stopper 10 can reset under the effect of holding power spring 11 after joint piece 9 slides stopper 10, stopper 10 just at this moment can block joint piece 9, so just do not need the manual work to lock the operation, compare in the mode that traditional needs screw locking operation, this locking mode is more swift and need not be with the help of the instrument, reach the effect of real-time locking.

As shown in fig. 3, a pull ring 12 is fixed outside the limiting block 10, and a buffer spring 13 is fixed between the locking ring 2 and the locking frame 1; the during operation, after optical instrument uses the completion, when needing to readjust the focus, need staff's manual pulling pull ring 12 to drive stopper 10 motion for stopper 10 and joint piece 9 separation, it can extrude buffer spring 13 simultaneously to explain be at the gliding in-process of locking ring 2, at this moment the locking ring 2 alright normal reset under buffer spring 13's effect after stopper 10 and joint piece 9 separation, this process also need not be with the help of the instrument, thereby the effect that resets fast has been reached.

As shown in fig. 4 to 5, both sides of the squeezing plate 6 are fixed with poke rods 14, one end of each poke rod 14, which is far away from the squeezing plate 6, is fixed with a knocking ball 15, one side of each knocking ball 15, which is far away from the squeezing plate 6, is provided with a liquid storage bag 16, the liquid storage bags 16 are installed inside the guide posts 7, and the upper and lower sides of each liquid storage bag 16 are connected with communicating pipes in a penetrating manner; during operation, in the process of locking by the movement of the extrusion plate 6, the poke rod 14 is driven to move at the same time, the poke rod 14 moves to drive the knocking ball 15 to move to contact with the liquid storage bag 16 and extrude the liquid storage bag 16, so that lubricating liquid stored in the liquid storage bag can be sprayed out, the sprayed lubricating liquid can lubricate a focusing assembly of the optical instrument and the guide column 7, and the smoothness of the focal length adjustment of the optical instrument is improved.

As shown in fig. 5, a plurality of stirring balls 17 are arranged inside the reservoir 16, the stirring balls 17 are fixedly connected with the reservoir 16 through a connecting rod, and a supporting spring is fixed inside the reservoir 16; the during operation, at the in-process of stock solution bag 16 deformation, it can drive simultaneously and stir 17 motions and mix its inside lubricated liquid to make lubricated liquid more homogenize, improve lubricated effect, and through mutually supporting of supporting spring and communicating pipe, thereby it resets to make stock solution bag 16 can breathe in after deformation, and then discharge lubricated liquid that can reciprocate, what need explain is that the communicating pipe inside of stock solution bag 16 both sides all installs the check valve.

As shown in fig. 5, a buffer cushion 18 is fixed on one side of the extrusion plate 6 away from the transmission rod 4, and the buffer cushion 18 is made of sponge material; during operation, at the in-process of stripper plate 6 and focusing subassembly contact, collision force when can effectual reduction its contact through blotter 18, and then the thread of protection focusing subassembly to blotter 18 can absorb too much lubricating liquid, prevents its outside of overflowing locking frame 1, causes the influence to optical instrument's normal use, and at the in-process of blotter 18 and focusing subassembly contact, it also can clean its surface.

As shown in fig. 5 to 6, a detection block 19 is slidably connected inside the extrusion plate 6, an alarm ball 20 is fixed at one end of the detection block 19 away from the cushion pad 18, a return ball 21 is arranged at one side of the alarm ball 20 away from the detection block 19, and the return ball 21 is fixedly connected with the extrusion plate 6 through a spring sheet; during operation, in the process that stripper plate 6 and focusing subassembly contact, it can drive simultaneously and detect piece 19 motion, thereby detect piece 19 motion and drive alarm ball 20 motion, make the outside shell fragment of echo ball 21 reciprocal springing up until alarm ball 20 and echo ball 21 collide, echo ball 21 this moment can reciprocal and alarm ball 20 collision send the sound, thereby remind the staff to lock in place, avoid the staff to continuously exert pressure and cause the damage to blotter 18 and screw thread.

As shown in fig. 6, a hollow groove is formed in the detection block 19, a suction plug 22 is slidably connected in the hollow groove, a guide rod 23 is fixed on one side of the suction plug 22 away from the detection block 19, the guide rod 23 is in through connection with the detection block 19, a pair of guide tubes 24 is in through connection with one side of the detection block 19 close to the cushion pad 18, and a check valve is installed in each of the pair of guide tubes 24; during operation, before detecting the motion of piece 19, guide rod 23 can be earlier one step with focusing subassembly contact and drive the motion of suction stopper 22, the inside negative pressure that just can produce of dead slot behind the motion of suction stopper 22 to suck the inside lubricated liquid of blotter 18 through one of them honeycomb duct 24, can retrieve inside the dead slot too much lubricated liquid like this, and when the equipment was loosened after the focusing was accomplished, too much lubricated liquid alright through another honeycomb duct 24 secondary discharge lubricated other positions of focusing subassembly this moment.

Example two

As shown in fig. 7 to 8, a first comparative example, in which another embodiment of the present invention is: an oil storage tank 27 is arranged in the locking frame 1 and on one side, away from the clamping block 9, of the limiting block 10, liquid is placed in the oil storage tank 27, a sealing plug 26 is slidably connected to one side, close to the clamping block 9, of the oil storage tank 27, a prompting rod 25 is fixed to one side, close to the clamping block 9, of the sealing plug 26, and a jacking block 28 is slidably connected to one side, away from the locking ring 2, of the oil storage tank 27; the during operation, at the in-process that promotes locking ring 2 locking, locking ring 2 drives joint piece 9 when joint piece 9 moves and can contact with suggestion pole 25, and promote suggestion pole 25 and drive the motion of closing plug 26, the motion of closing plug 26 can promote the inside fluid of oil storage tank 27, jacking piece 28 can be ejecting under the effect of oil pressure, the clamping-force size of exerting the focusing subassembly can be observed by the distance of ejecting through jacking piece 28, also can play the warning effect to personnel simultaneously, prevent that the staff from focusing under the condition of not loosening locking structure, optical instrument has been protected.

As shown in fig. 8, a warning sheet 29 is fixed outside the jacking block 28, and the warning sheet 29 is made of a reflective material; when the optical instrument works, the warning sheet 29 can reflect external sunlight to generate reflected light, so that the warning effect can be further improved, and it should be noted that the reflection angle of the warning sheet 29 needs to ensure that the normal use of the optical instrument is not affected.

The working principle is as follows: when the device is used, the device is arranged outside an optical instrument, so that a focusing assembly of the optical instrument is connected with a guide post 7 through threads, when the focal length needs to be adjusted, the adjusting assembly is rotated to move on the guide post 7, when the focusing assembly needs to be locked after being adjusted, staff needs to manually push a locking ring 2, the locking ring 2 slides in a locking frame 1 after being pushed, a steering block 3 is simultaneously driven to move in the sliding process of the locking ring 2, the steering block 3 moves to compress a return spring 5 to deform the return spring and then drive a transmission rod 4 to move, the transmission rod 4 moves to further drive an extrusion plate 6 to move until the extrusion plate 6 is contacted with the focusing assembly and applies extrusion force to the focusing assembly to lock the focusing assembly, at least three extrusion plates 6 are distributed in an array manner, so that the focusing assembly can be pressed from multiple directions simultaneously, and the deflection of the axis of the focusing assembly in the clamping process is prevented, the direction of the locking force applied by the locking structure is consistent with the axis direction of the focusing assembly, so that the condition of shifting the axis of the focusing assembly cannot occur, and the condition that the axis of the lens of the optical instrument deviates due to the application of a deflection force is effectively avoided while the focal length is locked;

in the process that an employee pushes the locking ring 2 to slide, the rubber ring 8 can effectively increase the friction force between the rubber ring and the palm of the employee to prevent the employee from falling off the hand, the stability in the locking process is improved, the locking ring 2 can simultaneously drive the clamping block 9 to move in the sliding process, the clamping block 9 can push the limiting block 10 to stretch the force storage spring 11 to slide after contacting with the limiting block 10, and the limiting block 10 can reset under the action of the force storage spring 11 after the clamping block 9 slides over the limiting block 10, at the moment, the limiting block 10 can block the clamping block 9, so that manual locking operation is not needed, compared with the traditional mode that a screw is needed to be locked, the locking mode is faster, tools are not needed, and the real-time locking effect is achieved; after the optical instrument is used, when the focal length needs to be adjusted again, staff need to manually pull the pull ring 12 to drive the limiting block 10 to move, so that the limiting block 10 is separated from the clamping block 9, it needs to be explained that the buffering spring 13 can be simultaneously extruded in the sliding process of the locking ring 2, at this time, the locking ring 2 can be normally reset under the action of the buffering spring 13 after the limiting block 10 is separated from the clamping block 9, and the process also does not need tools, so that the effect of quick reset is achieved;

in the process of moving and locking the extrusion plate 6, the poke rod 14 is simultaneously driven to move, the poke rod 14 moves to drive the knocking ball 15 to move to contact with the liquid storage bag 16 and extrude the liquid storage bag 16, so that lubricating liquid stored in the liquid storage bag can be sprayed out, the sprayed lubricating liquid can lubricate a focusing component of the optical instrument and the guide post 7, and the smoothness of focal length adjustment of the optical instrument is improved; in the process of deformation of the liquid storage bag 16, the liquid storage bag can simultaneously drive the stirring ball 17 to move to stir the lubricating liquid in the liquid storage bag, so that the lubricating liquid is more homogenized, the lubricating effect is improved, the liquid storage bag 16 can suck air after deformation through mutual matching of the supporting spring and the communicating pipe so as to reset, the lubricating liquid can be discharged in a reciprocating manner, and the communicating pipes on two sides of the liquid storage bag 16 are internally provided with one-way valves; in the process that the extrusion plate 6 is in contact with the focusing assembly, the buffer cushion 18 can effectively reduce the collision force when the extrusion plate is in contact with the focusing assembly, so that the threads of the focusing assembly are protected, the buffer cushion 18 can absorb excessive lubricating liquid and prevent the lubricating liquid from overflowing out of the locking frame 1 to influence the normal use of an optical instrument, and the surface of the buffer cushion 18 can be cleaned in the process of contacting with the focusing assembly;

in the process that the extrusion plate 6 is contacted with the focusing component, the extrusion plate can simultaneously drive the detection block 19 to move, the detection block 19 moves to drive the alarm ball 20 to move until the alarm ball 20 collides with the echo ball 21 to make the elastic sheet outside the echo ball 21 bounce in a reciprocating way, and the echo ball 21 collides with the alarm ball 20 to make a sound so as to remind a worker to lock in place and avoid the damage to the cushion pad 18 and threads caused by continuous pressure applied by the worker; before the detection block 19 moves, the guide rod 23 can be firstly contacted with the focusing assembly and drives the suction plug 22 to move, negative pressure can be generated inside the empty groove after the suction plug 22 moves, so that lubricating liquid inside the cushion pad 18 is sucked through one of the guide pipes 24, excessive lubricating liquid can be recycled inside the empty groove, and when equipment is loosened after focusing is completed, the excessive lubricating liquid can be discharged through the other guide pipe 24 for the second time to lubricate other parts of the focusing assembly;

in the process of pushing the locking ring 2 to lock, when the locking ring 2 drives the clamping block 9 to move, the clamping block 9 can be in contact with the prompt rod 25, the prompt rod 25 is pushed to drive the sealing plug 26 to move, the sealing plug 26 can push oil in the oil storage tank 27, the jacking block 28 can be ejected out under the action of oil pressure, the clamping force applied to the focusing assembly can be observed through the distance of the ejection of the jacking block 28, meanwhile, the warning effect can be achieved for a worker, the worker is prevented from focusing under the condition that the locking structure is not loosened, and an optical instrument is protected; the warning sheet 29 is disposed to reflect external sunlight to generate reflected light, so as to further improve the warning effect, and it should be noted that the reflection angle of the warning sheet 29 is required to ensure that the normal use of the optical instrument is not affected.

The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are merely intended to facilitate the description of the present invention and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides an optical instrument's focusing locking structure which characterized in that: comprises a locking frame (1), a guide post (7) is fixed in the locking frame (1), a locking ring (2) is connected between the locking frame (1) and the guide post (7) in a sliding way, a steering groove is formed in the locking ring (2), a plurality of steering blocks (3) are connected to one side of the steering groove close to the guide column (7) in a sliding manner, the number of the steering blocks (3) is three or more, the steering blocks are distributed in an array, a transmission rod (4) is fixed on one side of each steering block (3) close to the guide column (7), one end of the transmission rod (4) far away from the steering block (3) is fixed with a squeezing plate (6), the number of the extrusion plates (6) is the same as that of the steering blocks (3) and corresponds to that of the steering blocks one by one, the outside of the transmission rod (4) is sleeved with a return spring (5), and the inside of the guide post (7) is provided with a hollow groove matched with the extrusion plate (6).

2. A focus locking structure of an optical instrument as claimed in claim 1, wherein: locking ring (2) are kept away from locking frame (1) one side and are fixed with rubber ring (8), guide post (7) external fixation has joint piece (9), the inside top through connection that just is located joint piece (9) of locking frame (1) has stopper (10), be fixed with between stopper (10) and locking frame (1) and hold power spring (11).

3. A focus lock construction for an optical instrument according to claim 2, wherein: the outside of the limiting block (10) is fixed with a pull ring (12), and a buffer spring (13) is fixed between the locking ring (2) and the locking frame (1).

4. A focus lock construction for an optical instrument according to claim 1, wherein: poke rods (14) are fixed on two sides of the extrusion plate (6), a knocking ball (15) is fixed at one end, away from the extrusion plate (6), of each poke rod (14), a liquid storage bag (16) is arranged on one side, away from the extrusion plate (6), of each knocking ball (15), the liquid storage bags (16) are installed inside the guide column (7), and communicating pipes are connected to the upper side and the lower side of each liquid storage bag (16) in a penetrating mode.

5. The focus locking structure of an optical instrument as claimed in claim 4, wherein: the liquid storage bag (16) is internally provided with a plurality of stirring balls (17), the stirring balls (17) are fixedly connected with the liquid storage bag (16) through a connecting rod, and a supporting spring is fixedly arranged in the liquid storage bag (16).

6. The focus locking structure of an optical instrument as claimed in claim 5, wherein: a buffer pad (18) is fixed on one side, away from the transmission rod (4), of the extrusion plate (6), and the buffer pad (18) is made of sponge materials.

7. A focus lock construction for an optical instrument according to claim 1, wherein: the improved structure is characterized in that a detection block (19) is connected to the inner portion of the extrusion plate (6) in a sliding mode, an alarm ball (20) is fixed to one end, away from the cushion pad (18), of the detection block (19), a echo ball (21) is arranged on one side, away from the detection block (19), of the alarm ball (20), and the echo ball (21) is fixedly connected with the extrusion plate (6) through an elastic sheet.

8. A focus locking mechanism for an optical instrument as claimed in claim 7, wherein: detect piece (19) inside and seted up the dead slot, this inside sliding connection of dead slot has suction stopper (22), one side that detection piece (19) were kept away from in suction stopper (22) is fixed with guide rod (23), guide rod (23) with detect piece (19) through connection, one side through connection that detection piece (19) is close to blotter (18) has a pair of honeycomb duct (24), and is a pair of honeycomb duct (24) inside all installs the check valve.

9. A focus locking mechanism for an optical instrument as claimed in claim 7, wherein: locking frame (1) inside and be located stopper (10) and keep away from one side of joint piece (9) and seted up oil storage tank (27), liquid has been placed to oil storage tank (27) inside, one side sliding connection that oil storage tank (27) are close to joint piece (9) has closing stopper (26), one side that closing stopper (26) are close to joint piece (9) is fixed with suggestion pole (25), one side sliding connection that locking ring (2) were kept away from in oil storage tank (27) has jacking piece (28).

10. A focus lock mechanism for an optical instrument as claimed in claim 9, wherein: the jacking piece (28) is externally fixed with a warning piece (29), and the warning piece (29) is made of a reflective material.

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