CN216485737U

CN216485737U - Compact lockable built-in double-motor automatic zoom lens

Info

Publication number: CN216485737U
Application number: CN202123319975.5U
Authority: CN
Inventors: 谢小明; 卢定宇
Original assignee: Guilin Focus Optical Instrument Co ltd
Current assignee: Guilin Focus Optical Instrument Co ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-05-10
Anticipated expiration: 2031-12-27

Abstract

The utility model discloses a compact lockable built-in double-motor automatic zoom lens, which comprises a zoom component and a compensation component which are arranged between a front fixed component and a rear fixed component on the same optical axis, wherein the zoom component and the compensation component are arranged on a left linear guide rail and a right linear guide rail through corresponding left and right sliding seats and move according to a set track under the driving of a moving mechanism, and the moving mechanism comprises a left ball screw transmission pair and a right ball screw transmission pair which are arranged on one side of the plane where the left linear guide rail and the right linear guide rail are arranged; the ball screw transmission pair on one side comprises a ball screw nut I which is screwed on the front part of the ball screw I and is connected with the variable-power component, and the rear part of the ball screw I is connected with a speed reduction motor I through a coupling I; the ball screw transmission pair on the other side comprises a ball screw nut II which is screwed on the rear part of the ball screw II and is connected with the compensation component, and the front part of the ball screw II is connected with a speed reduction motor II through a coupler II. The utility model discloses the application realizes quick, stable, reliable variation in various occasions of disturbance.

Description

Compact lockable built-in double-motor automatic zoom lens

Technical Field

The utility model relates to an optical instrument structure specifically is a compact can lock automatic zoom camera lens of built-in bi-motor of formula.

Background

In order to solve the technical defects of the traditional automatic zoom lens, the applicant company provides two kinds of patent applications of the utility model.

1. The patent No. ZL201821677129.6 ' two groups of automatic zoom lens of linkage of two motor full cut-off ring control ' utility model patent, its technical scheme includes preceding, back fixed component and preceding, the zoom component and the compensation component that set up between the back fixed component, zoom component and compensation component are located and are made the two move according to setting for on the zoom mechanism of orbit along the axial, zoom mechanism includes slide mechanism and moving mechanism, moving mechanism includes that the axial arranges preceding, back lead screw in the middle of slide mechanism's left and right linear guide, zoom motor drive front lead screw and remove the zoom component, compensation motor drive back lead screw and remove the compensation component.

2. The patent number is ZL 201921057827.0's automatic zoom lens structure of external bi-motor of compact's utility model patent, its technical scheme include preceding, back fixed component and in preceding, the variable power component and the compensation component that set up between the fixed component, variable power component and compensation component locate can make the two according to the variable power mechanism who sets for the orbit removal along the optical axis on, variable power mechanism includes slide mechanism and moving mechanism, and moving mechanism includes preceding, the back lead screw that sets up in left and right linear guide middle below, and preceding, back lead screw nut links firmly with variable power component and compensation component respectively, is equipped with variable power motor and compensating motor respectively corresponding to preceding, back lead screw, and the variable power driving gear on the variable power motor meshes with the variable power driven gear on the preceding lead screw, and the compensation driving gear on the compensating motor meshes with the compensation driven gear on the back lead screw.

In practical application, the two patents have the following technical defects:

1. if two motors and two transmission screw rods are coaxially arranged, the zoom main body part of the lens is longer, and inconvenience is brought to production and use of the lens.

2. If two transmission screw rods are coaxially arranged, the two motors are offset at the same time, and torque is transmitted through gear transmission, although the length of the main body part of the lens can be effectively controlled, the screw rods cannot be locked under the condition that the motors stop rotating due to the existence of gear transmission gaps, and the stability of multiplying power when the lens is disturbed in external vibration, acceleration and the like cannot be ensured.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model aims to solve the technical problem that a compact lockable built-in double-motor automatic zoom lens that the precision is higher, stability is better is proposed.

The compact lockable built-in double-motor automatic zoom lens can solve the technical problems and adopts the technical scheme that the compact lockable built-in double-motor automatic zoom lens comprises a front fixed component and a rear fixed component which are arranged on the same optical axis, and a zoom component and a compensation component which are arranged between the front fixed component and the rear fixed component in front of and behind the same optical axis, wherein the zoom component and the compensation component are respectively arranged in a lens base I and a lens base II, the lens base I and the lens base II are arranged on a left linear guide rail and a right linear guide rail through corresponding left and right sliding bases and respectively move along the optical axis under the driving of a moving mechanism according to a set track, and the compact lockable built-in double-motor automatic zoom lens is different in that:

1. the moving mechanism comprises a left ball screw transmission pair and a right ball screw transmission pair which are arranged on the upper side or the lower side of the left linear guide rail and the right linear guide rail, each ball screw transmission pair comprises a ball screw nut screwed on a ball screw, the plane of the left ball screw and the plane of the right ball screw are parallel to the plane of the left linear guide rail and the right linear guide rail, and the axes of the left ball screw and the right ball screw are symmetrical to the optical axis.

2. A ball screw nut I screwed on the front portion of a left or right ball screw I is connected with a lens base I, and the rear portion of the ball screw I is installed on a bearing I and is connected with a speed reduction motor I through a coupler I.

3. And a ball screw nut II screwed on the rear part of the right or left ball screw II is connected with the lens base II, and the front part of the ball screw II is arranged on a bearing II and is connected with a speed reduction motor II through a coupling II.

Furthermore, the bearing I and the bearing II are arranged on the left and right in the double bearing seat.

Furthermore, gear motor I and gear motor II install on duplex bearing respectively through motor cabinet I and motor cabinet II.

Conventionally, the screw pitches of the ball screw I and the ball screw II are the same, and the screw pitch P is more than or equal to 10.

The utility model has the advantages that:

1. the utility model discloses compact can lock the automatic zoom camera lens of the built-in bi-motor of formula has taken compact design, and the mechanism is compact and operates steadily.

2. The utility model discloses in the structure, adopt coupling joint ball screw and gear motor, because gear motor keeps the existence of moment, realized the locking of ball screw when gear motor stall to the stability of camera lens multiplying power in adverse circumstances has been guaranteed.

3. The utility model discloses in the structure, adopt coarse pitch ball screw, realized quick zoom, meanwhile greatly increased the life of camera lens.

Drawings

Fig. 1 is an exploded view of an embodiment of the present invention.

Fig. 2 is an exploded view of the moving mechanism of the embodiment of fig. 1.

And (3) identifying the figure number: 1. a front fixed component; 2. rear fixed component; 3. a variable-magnification component; 4. a compensation component; 5. a moving mechanism; 6. a slide base; 7. a linear guide rail; 8. a ball screw I; 9. a ball screw nut I; 10. a coupler I; 11. a speed reducing motor I; 12. a bearing I; 13. a ball screw II; 14. a ball screw nut II; 15. a bearing II; 16. a coupler II; 17. a speed reducing motor II; 18. a dual bearing housing; 19. a motor base I; 20. a motor base II; 21. a lens mount housing; 22. a front objective lens group; 23. a microscope base I; 24. and a lens base II.

Detailed Description

The technical solution of the present invention will be further explained with reference to the embodiments shown in the drawings.

The utility model discloses automatic zoom lens of built-in bi-motor of compact lockable, including camera lens seat shell 21, fixed component 1 and back fixed component 2 before the preceding, rear end of camera lens seat shell 21 are installed with the optical axis, still are equipped with preceding objective group 22 in preceding fixed component 1 the place ahead with the optical axis on the front end of camera lens seat shell 21, inside camera lens seat shell 21, preceding, back are equipped with zoom component 3 and compensation component 4 with the optical axis between preceding fixed component 1 and the back fixed component 2, zoom component 3 is installed in camera lens seat I23, camera lens seat I23 is installed on the front portion of left and right horizontal linear guide 7 through corresponding left and right slide 6, compensation component 4 is installed in camera lens seat II 24, camera lens seat II 24 is installed on the rear portion of left and right horizontal linear guide 7 through corresponding left and right slide 6, camera lens seat I23 and camera lens seat II 24 are driven along left side down along the drive of moving mechanism 5 that camera lens seat shell 21 inside set up, The right linear guide rail 7 drives the zoom component 3 and the compensation component 4 to move according to a set track respectively, as shown in figure 1.

The moving mechanism 5 comprises a left ball screw transmission pair and a right ball screw transmission pair which are arranged below the left linear guide rail 7 and the right linear guide rail 7 on the basis of a double bearing seat 18, each ball screw transmission pair comprises a ball screw nut screwed on a ball screw, the plane of the left ball screw and the plane of the right ball screw are parallel to the plane of the left linear guide rail 7 and the plane of the right ball screw and the axis of the left ball screw and the axis of the right ball screw are symmetrical to an optical axis, the double bearing seat 18 is fixedly arranged in the center inside the lens seat shell 21, and a bearing II 15 and a bearing I12 which are in angular contact are respectively arranged in a left bearing hole and a right bearing hole in the double bearing seat 18, as shown in figure 2.

A ball screw nut II 14 screwed on the rear part of the left ball screw II 13 is upwards connected with a lens base II 24, the front part of the ball screw II 13 is arranged in a bearing II 15, the front end of the ball screw II 13 is connected with a speed reducing motor II 17 through an elastic coupling II 16, the speed reducing motor II 17 is arranged on a motor base II 20, and the motor base II 20 is arranged on the left end face of a double-bearing base 18; a ball screw nut I9 screwed in front of a right ball screw I8 is upwards connected with a mirror base I23, the rear part of the ball screw I8 is installed in a bearing I12, the rear end of the ball screw I8 is connected with a speed reducing motor I11 through an elastic coupling I10, the speed reducing motor I11 is installed on a motor base I19, and the motor base I19 is installed on the right end face of a double-shaft bearing base 18; the screw pitches of the ball screw I8 and the ball screw II 13 are the same, in order to meet the requirement of rapid zooming, the screw pitches P of the ball screw I8 and the ball screw II 13 are both larger than or equal to 10, and the gear reducers without backlash in the process of reverse rotation are adopted for the gear reducers I11 and the gear reducers II 17, as shown in figure 2.

The utility model discloses in, drive control circuit realizes the stability of zoom process image plane through drive gear motor I11 and gear motor II 17 according to specific speed coordination linkage, and the zoom of high accuracy is realized through the displacement of accurate closed-loop control zoom component 3 and compensation component 4.

Claims

1. Compact can lock automatic zoom lens of built-in bi-motor of formula, including preceding fixed component (1) and back fixed component (2) that set up with the optical axis and locate before and after with the optical axis before and after zoom component (3) and compensation component (4) between preceding, back fixed component (1, 2), zoom component (3) and compensation component (4) are installed respectively in microscope base I (23) and microscope base II (24), install on left and right linear guide (7) and move according to setting for the orbit along the optical axis respectively under moving mechanism (5) drive through corresponding left and right slide (6) microscope base I (23) and microscope base II (24), its characterized in that:

the moving mechanism (5) comprises a left ball screw transmission pair and a right ball screw transmission pair which are arranged on the upper side or the lower side of the left linear guide rail and the right linear guide rail (7), each ball screw transmission pair comprises a ball screw nut screwed on a ball screw, the plane of the left ball screw and the plane of the right ball screw are parallel to the plane of the left linear guide rail and the right linear guide rail (7), and the axes of the left ball screw and the right ball screw are symmetrical to the optical axis;

the front parts of the left and right ball screws I (8) are screwed with ball screw nuts I (9) which are connected with the lens base I (23), and the rear parts of the ball screws I (8) are arranged on a bearing I (12) and are connected with a speed reducing motor I (11) through a coupling I (10);

and a ball screw nut II (14) screwed on the rear part of the right or left ball screw II (13) is connected with the mirror base II (24), and the front part of the ball screw II (13) is arranged on a bearing II (15) and is connected with a speed reduction motor II (17) through a coupling II (16).

2. The compact lockable internal twin-motor automatic zoom lens according to claim 1, characterized in that: the bearing I (12) and the bearing II (15) are arranged in the double bearing seats (18) from left to right.

3. The compact lockable internal twin-motor automatic zoom lens according to claim 2, characterized in that: and the speed reducing motor I (11) and the speed reducing motor II (17) are respectively arranged on the double bearing seats (18) through a motor seat I (19) and a motor seat II (20).

4. The compact lockable built-in dual-motor automatic zoom lens according to any one of claims 1 to 3, characterized in that: the screw pitches of the ball screw I (8) and the ball screw II (13) are the same, and the screw pitch P is more than or equal to 10.