CN213399029U

CN213399029U - Anti-loosening stretching lens cone

Info

Publication number: CN213399029U
Application number: CN202022835263.8U
Authority: CN
Inventors: 陈运涛
Original assignee: Huizhou Haichuan Optical Components Co ltd
Current assignee: Huizhou Haichuan Optical Components Co ltd
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-06-08
Anticipated expiration: 2030-12-01

Abstract

The utility model discloses a locking tensile lens cone relates to the optical equipment field, leads to the formation of image to run burnt fuzzy problem because of inner lens cone slides easily to current zoom, now proposes following scheme, and it includes the urceolus, the urceolus has seted up the barrel casing along its axial, just the barrel casing runs through in the urceolus, it has cup jointed the inner tube to slide in the barrel casing, just the one end of inner tube runs through in the urceolus, the one end that the urceolus is located the inner tube matches and has cup jointed the twist ring, just the inner tube runs through in the twist ring, the circumference outer wall of urceolus is located twist ring department and has seted up the recess, just the second ring channel has been seted up along its week to the circumference inner wall of twist ring, it is provided with the briquetting to match between recess and the second ring channel, just recess and second ring. The utility model discloses novel structure, the device simple structure is stable, easily realize and the simple operation, and the effectual zoom that has solved slides easily because of the inner tube and leads to the formation of image to run burnt fuzzy problem.

Description

Anti-loosening stretching lens cone

Technical Field

The utility model relates to an optical equipment field especially relates to a locking tensile lens cone.

Background

The camera lens is an important component in optical equipment, the quality and performance of the camera lens directly affect the imaging effect, the application field of the camera lens is very wide, including cameras, video recorders, microscopic imaging and the like, the model of the camera lens is inseparable from the parameters thereof, the camera lens is divided into a fixed focus lens model and a zoom lens model according to whether the focal section of the camera lens is changeable, and the zoom camera lens is more flexible to use relative to the fixed focus lens, for example, on the electronic microscopic imaging equipment, the size of the image magnification ratio can be adjusted through zooming, and the fixed focus lens needs to move the whole lens to achieve the same effect, but because the zooming of the existing zoom lens is realized through the movement of the inner lens barrel relative to the outer lens barrel, the camera lens is required to be vertically installed in special application scenes such as the electronic microscopic imaging and the like, the inner lens cone of the lens can slide down due to the action of gravity, so that the problems of focus loss, blurring and the like of an imaging picture are caused, and the normal use of equipment is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a locking tensile lens cone has solved zoom and has slided easily because of the inner lens cone and lead to the formation of image to run burnt fuzzy problem.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a locking tensile lens cone, includes the urceolus, the urceolus has seted up the barrel casing along its axial, just the barrel casing runs through in the urceolus, the inner tube has been cup jointed in the barrel casing slides, just the one end of inner tube runs through in the urceolus, the one end that the urceolus is located the inner tube matches and has cup jointed the turn-buckle, just the inner tube runs through in the turn-buckle, the circumference outer wall of urceolus is located turn-buckle department and has seted up the recess, just the second ring channel has been seted up along its week to the circumference inner wall of turn-buckle, match between recess and the second ring channel and be and all be the slip cup joint with the.

Preferably, the circumference outer wall of the outer cylinder is provided with a first annular groove along one circumference, and one end of the torsion ring is in sliding sleeve joint with the first annular groove.

Preferably, the circumferential outer wall of the inner barrel is provided with threads, and the torsion ring is in threaded connection with the threads.

Preferably, a spring is arranged between the pressing block and the outer cylinder in a matched mode, the spring is symmetrically distributed about two ends of the pressing block, and the groove, the second annular groove, the pressing block and the spring are symmetrically distributed about the outer cylinder.

Preferably, the two side walls of the outer barrel and the pressing block, which are close to each other, are provided with spring grooves at the spring positions, and the two ends of the spring are sleeved in the spring grooves.

Preferably, the briquetting is located and has seted up the sand grip along the axial of urceolus in one side that is close to the twist ring, just the strip groove has been seted up along the axial of urceolus in the circumference inner wall of twist ring is located the second annular groove, the strip groove is annular array distribution about the twist ring, just the strip groove is matchd mutually with the sand grip, the sand grip cup joints with the strip groove.

The utility model has the advantages that:

rotatory swing ring, but the inner tube removal of operating promptly zooms through the threaded connection structure of swing ring and inner tube, loosens the swing ring, compresses tightly in the bar groove through the multiunit sand grip of spring on with the briquetting for the swing ring obtains sufficient static moment, reaches and prevents that the inner tube from taking place the purpose that slides, and the device simple structure is stable, easily realize and the simple operation, and the effectual zoom lens that has solved leads to the formation of image to run burnt fuzzy problem because of the inner tube slides easily.

Drawings

Fig. 1 is a side view of the present invention.

Fig. 2 is a sectional view of the internal structure of the present invention.

Fig. 3 is an enlarged view of a structure in fig. 2 according to the present invention.

Fig. 4 is a cross-sectional view of B-B in fig. 2 according to the present invention.

Fig. 5 is an enlarged view of the structure C in fig. 4 according to the present invention.

Reference numbers in the figures: 1. an outer cylinder; 2. a barrel groove; 3. an inner barrel; 4. a torsion ring; 5. a first annular groove; 6. a thread; 7. a groove; 8. a second annular groove; 9. briquetting; 10. a spring; 11. a spring slot; 12. and (4) raised strips.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-5, an anti-loose stretching lens barrel comprises an outer barrel 1, wherein a barrel groove 2 is formed in the outer barrel 1 along the axial direction of the outer barrel, the barrel groove 2 penetrates through the outer barrel 1, an inner barrel 3 is slidably sleeved in the barrel groove 2, one end of the inner barrel 3 penetrates through the outer barrel 1, a torsion ring 4 is sleeved at one end of the outer barrel 1, the inner barrel 3 penetrates through the torsion ring 4, a groove 7 is formed in the position, located at the torsion ring 4, of the circumferential outer wall of the outer barrel 1, a second annular groove 8 is formed in the circumferential inner wall of the torsion ring 4 along one circumference of the circumferential inner wall, a pressing block 9 is arranged between the groove 7 and the second annular groove 8 in a matching manner, the groove 7 and the second annular groove 8 are in sliding sleeve connection with the pressing block 9, a first annular groove 5 is formed in the circumferential outer wall of the outer barrel 1 along one circumference of the outer wall, and one end of, the outer wall of the circumference of the inner barrel 3 is provided with a thread 6, the torsion ring 4 is in threaded connection with the thread 6, a spring 10 is arranged between the pressing block 9 and the outer barrel 1 in a matching way, the springs 10 are symmetrically distributed about two ends of the pressing block 9, the grooves 7, the second annular groove 8, the pressing block 9 and the springs 10 are symmetrically distributed about the outer cylinder 1, spring grooves 11 are respectively arranged at the positions of the two side walls of the outer cylinder 1 and the pressing block 9 close to each other and positioned on the springs 10, and both ends of the spring 10 are sleeved in the spring grooves 11, one side of the pressing block 9 close to the torsion ring 4 is provided with a convex strip 12 along the axial direction of the outer cylinder 1, and the circumferential inner wall of the twist ring 4 is positioned in the second annular groove 8 and is provided with strip-shaped grooves along the axial direction of the outer barrel 1, the strip-shaped grooves are distributed in an annular array around the twist ring 4, and the strip-shaped groove is matched with the raised strip 12, and the raised strip 12 is sleeved with the strip-shaped groove.

The working principle is as follows: the device is on the basis of the structure of the traditional stretching lens cone, a damping structure mainly composed of a torsion ring 4 and a pressing block 9 is added, the operation flow of the device is that the torsion ring 4 is rotated, the torsion ring 4 keeps stable rotation through a first annular groove 5, the rotating torsion ring 4 is pushed by the thread pitch of a thread 6, so that an inner cylinder 3 moves along a cylinder groove 2 of an outer cylinder 1, the process that the inner cylinder 3 moves relative to the outer cylinder 1 is the process of adjusting a focal section, in the process of rotating the torsion ring 4, the pressing block 9 is always pressed on the inner wall of the torsion ring 4 through a spring 10, a convex strip 12 on the pressing block 9 continuously and circularly slides into a strip groove and slides out of the strip groove in the rotating process of the torsion ring 4, as shown in figure 5, after the torsion ring 4 is stopped to rotate, a plurality of groups of convex strips 12 on the pressing block 9 are pressed in the strip groove through the spring 10, under the precondition that the pressing block 9 is limited, so that the torsion ring 4 obtains enough static moment to achieve the purpose of preventing the inner cylinder 3 from sliding.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An anti-loose stretching lens cone comprises an outer cylinder (1), and is characterized in that the outer cylinder (1) is provided with a cylinder groove (2) along the axial direction thereof, the cylinder groove (2) penetrates through the outer cylinder (1), the inner cylinder (3) is sleeved in the cylinder groove (2) in a sliding manner, one end of the inner cylinder (3) penetrates through the outer cylinder (1), one end of the outer cylinder (1) positioned on the inner cylinder (3) is sleeved with a torsion ring (4) in a matching way, the inner cylinder (3) penetrates through the torsion ring (4), a groove (7) is formed in the position, located on the torsion ring (4), of the circumferential outer wall of the outer cylinder (1), and the circumferential inner wall of the torsion ring (4) is provided with a second annular groove (8) along one circumference, a pressing block (9) is arranged between the groove (7) and the second annular groove (8) in a matching way, and the groove (7), the second annular groove (8) and the pressing block (9) are in sliding sleeve joint.

2. The anti-loose stretching lens barrel according to claim 1, wherein the outer circumferential wall of the outer barrel (1) is provided with a first annular groove (5) along a circumference thereof, and one end of the torsion ring (4) is slidably sleeved with the first annular groove (5).

3. The anti-loose stretching lens barrel according to claim 1, wherein the outer circumferential wall of the inner barrel (3) is provided with a thread (6), and the torsion ring (4) is in threaded connection with the thread (6).

4. The anti-loose stretching lens barrel according to claim 1, wherein a spring (10) is disposed between the pressing block (9) and the outer cylinder (1), the springs (10) are symmetrically distributed about two ends of the pressing block (9), and the groove (7), the second annular groove (8), the pressing block (9) and the springs (10) are symmetrically distributed about the outer cylinder (1).

5. The anti-loose stretching lens barrel according to claim 4, wherein the two side walls of the outer barrel (1) and the pressing block (9) close to each other are provided with spring grooves (11) at the spring (10), and both ends of the spring (10) are sleeved in the spring grooves (11).

6. The anti-loose stretching lens barrel according to claim 1, wherein the pressing block (9) is provided with a protruding strip (12) at one side close to the torsion ring (4) along the axial direction of the outer barrel (1), and the inner circumferential wall of the torsion ring (4) is provided with a strip-shaped groove in the second annular groove (8) along the axial direction of the outer barrel (1), the strip-shaped grooves are distributed in an annular array with respect to the torsion ring (4), the strip-shaped grooves are matched with the protruding strip (12), and the protruding strip (12) is sleeved with the strip-shaped groove.