CN109613786B - Camera gear linear switching device and optical camera - Google Patents

Abstract

The invention belongs to the technical field of optical imaging detection, and particularly relates to a camera gear linear switching device which comprises a base and a zooming guide seat, wherein a motor is arranged on the base, the output end of the motor is fixedly connected with one end of a driving arm, the other end of the driving arm is hinged with a driven arm, a moving block is sleeved on the driven arm, the driven arm can slide in the moving block along the vertical direction, a zooming lens group is arranged in the zooming guide seat and can move in the zooming guide seat along the horizontal direction, the zooming lens group is connected with a moving block, a sliding groove is formed in the zooming guide seat along the horizontal direction, and the moving block can move along the sliding groove. The motor of the invention can accurately control the rotation angle of the driving arm, thereby accurately controlling the movement of the zoom lens group and realizing the advantage of accurate zoom of the zoom lens group.

Description

A camera gear linear switching device and an optical camera

technical field

The invention belongs to the technical field of optical imaging detection, and particularly relates to a camera gear linear switching device and an optical camera.

Background technique

In the field of optical detection, in order to meet the needs of long-focal length optical cameras to search, track and target long-distance targets, zoom optical structure design is often used. That is, by adjusting the zooming and focusing mechanism in the optical structure, the focusing lens group is moved along the optical axis to ensure that the camera can clearly image targets at different distances on the camera target surface. The traditional zoom focusing method is mainly to install the zoom lens group on a linear guide or a cam mechanism, and realize optical zoom through its movement. Although the above method is simple and easy to use, the zooming precision of the zoom lens group is low.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a camera gear linear switching device and an optical camera, which have the advantage of realizing the precise magnification of the variable magnification lens group.

In order to achieve the above object, on the one hand, the technical solution adopted by the present invention is: a camera gear linear switching device includes a base and a variable magnification guide seat, a motor is arranged on the base, and an output end of the motor is fixedly connected to one end of a drive arm, The other end of the drive arm is hinged to the follower arm, the moving block is set on the follower arm, and the follower arm can slide in the vertical direction in the moving block. The magnification guide seat moves in the horizontal direction, the variable magnification mirror group is connected with the moving block, the variable magnification guide seat is provided with a chute along the horizontal direction, and the moving block can move along the chute.

Preferably, the drive arm is provided with a limit stopper, the two sides of the base are respectively provided with a first switch frame and a second switch frame, the first switch frame is installed with the first state switch, and the second switch frame is installed on the second switch frame For the second state switch, the limit block can be matched with the first state switch and the second state switch respectively, and the first state switch and the second state switch can respectively control the motor.

Preferably, a first limit block and a second limit block are respectively provided on the base, and the first limit block and the second limit block can limit the rotation of the driving arm in an angle range of 0 to 180° .

Preferably, one end of the tension spring is connected to the driving arm, and the other end of the tension spring is fixed on the base.

Preferably, the output end of the motor is connected to a coupling, the coupling is connected to one end of the drive shaft, and the other end of the drive shaft is connected to the drive arm.

Preferably, the other end of the driving arm is fixedly connected to the driven arm shaft, and the driven arm shaft is connected to the driven arm through the driven arm bearing.

Preferably, an installation hole is opened in the base, the drive shaft is located in the installation hole, a drive bearing and a bearing spacer are sequentially sleeved on the drive shaft, the bearing inner pressure ring is installed on the drive shaft through a thread, and the bearing inner pressure ring locks the drive bearing The inner ring of the bearing is installed through the thread in the mounting hole, and the bearing outer pressure ring locks the outer ring of the drive bearing.

In another aspect, the present invention provides an optical camera, including any of the above-mentioned camera gear linear switching devices.

In the camera gear linear switching device according to the present invention, the motor drives the driving arm to rotate, and the driving arm drives the driven arm to slide up and down in the moving block, thereby driving the moving block and the variable magnification lens group to move in the horizontal direction, and the magnification is changed. The movement of the mirror group realizes the gear switching of the variable magnification mirror group. In the embodiment of the present invention, the rotation of the driving arm, the movement of the driven arm, and the linear motion of the moving block and the variable magnification mirror group are converted from rotary motion to linear motion, and the The magnification guide base is provided with a chute, which provides a guiding direction for the movement of the moving block and the zoom lens group. The moving block and the zoom lens group do not shift when they move. The motor can accurately control the rotation angle of the drive arm, and then accurately control the zoom lens. The movement of the mirror group realizes the rapid switching of gears and precise zooming.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for the present invention. In some embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

1 is one of the structural schematic diagrams of a camera gear linear switching device provided by an embodiment of the present invention;

2 is a second schematic structural diagram of a camera gear linear switching device provided by an embodiment of the present invention;

3 is a front view of a camera gear linear switching device provided by an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3 .

Among them, each reference mark in the figure is:

1—installation platform 2—base 3—first switch frame 4—first state switch

5—tension spring fixing screw 6—motor 7—motor bracket 8—coupling

9—drive arm 10—drive shaft 11—second switch frame 12—second state switch

13—following arm 14—moving block 15—zooming guide seat 16—zooming mirror group

17—follower arm shaft 18—tension spring 19—tension spring fixing seat 20—drive shaft bearing

21—bearing inner pressure ring 22—bearing outer pressure ring 23—bearing spacer 24—follower arm bearing

25—limit block 26—second limit block 27—first limit block

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings 1 to 4 are exemplary, and are intended to be used to explain the present invention, but should not be construed as a limitation of the present invention.

Furthermore, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first"-"second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, terms such as "installation" - "connected" - "connected" - "fixed" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

As shown in FIGS. 1 to 4 , on the one hand, a camera gear linear switching device provided by an embodiment of the present invention includes a base 2 and a variable magnification guide base 15 , a motor 6 is arranged on the base 2 , and an output end of the motor 6 is provided. It is fixedly connected with one end of the driving arm 9, and the other end of the driving arm 9 is hinged to the driven arm 13. The driven arm 13 is sleeved with a moving block 14, and the driven arm 13 can slide in the vertical direction in the moving block 14, and the variable magnification guide The variable magnification mirror group 16 is arranged in the seat 15. The variable magnification mirror group 16 can move in the horizontal direction in the variable magnification guide seat 15. The variable magnification mirror group 16 is connected with the moving block 14. slot, the moving block 14 can move along the chute.

In the embodiment of the present invention, the motor 6 drives the driving arm 9 to rotate, and the driving arm 9 drives the driven arm 13 to slide up and down in the moving block 14, thereby driving the moving block 14 and the variable magnification lens group 16 to move in the horizontal direction. The movement of 16 realizes the rapid switching of the gears of the variable magnification mirror group 16. In the embodiment of the present invention, the rotation of the driving arm 9, the movement of the driven arm 13, and the linear motion of the moving block 14 and the variable magnification mirror group 16 are determined by the rotational movement. Converted to linear motion, the variable magnification guide seat 15 is provided with a chute, which provides a guiding direction for the movement of the moving block 14 and the variable magnification mirror group 16. The moving block 14 and the variable magnification mirror group 16 do not shift when moving, and the motor 6 can accurately The rotation angle of the driving arm 9 is controlled, and then the movement of the zoom lens group 16 is precisely controlled, so as to realize the fast switching of gears and precise zooming.

Specifically, the angle at which the motor 6 drives the driving arm 9 to rotate can be set, the driving arm 9 rotates, and when the rotation angle of the driving arm 9 is 0°, the variable magnification mirror group 16 is driven to switch to the first gear; the rotation angle of the driving arm 9 is 180° When the rotation angle of the drive arm 9 is 45°, it drives the variable magnification lens group 16 to switch to the third gear; when the rotation angle of the drive arm 9 is 45°, it drives the The zoom lens group 16 is switched to the third gear; when the rotation angle of the driving arm 9 is 315°, the zoom lens group 16 is driven to switch to the third gear. Accurate zooming of the zoom lens group 16 is achieved.

Further, the motor bracket 7 is mounted on the base 2 with screws, and the motor 6 is mounted on the motor bracket 7 by screws.

The output end of the motor 6 is connected to a coupling, the coupling is connected to one end of the drive shaft 10 , and the other end of the drive shaft 10 is connected to the drive arm 9 .

The other end of the driving arm 9 is fixedly connected to the follower arm shaft 17 , and the follower arm shaft 17 is connected to the follower arm 13 through the follower arm bearing 24 .

Specifically, the base 2 is provided with an installation hole, the drive shaft 10 is located in the installation hole, the drive shaft 10 is sleeved with a drive bearing 20 and a bearing spacer 23 in sequence, and the bearing inner pressure ring 21 is installed on the drive shaft 10 through threads. The inner pressure ring 21 locks the inner ring of the drive bearing 20 ; the bearing outer pressure ring 22 is screwed into the mounting hole, and the bearing outer pressure ring 22 locks the outer ring of the drive bearing 20 .

In the embodiment of the present invention, the driving arm 9 is provided with a limit block 25, the two sides of the base 2 are respectively provided with a first switch frame 3 and a second switch frame 11, and the first switch frame 3 is installed in the first state Switch 4, the second state switch 12 is installed on the second switch frame 11, the limit stopper 25 can be matched with the first state switch 4 and the second state switch 12 respectively, and the first state switch 4 and the second state switch 12 can be respectively Control the motor 6.

Specifically, the first state switch 4 and the second state switch 12 can respectively control the motor 6 to be locked or powered off; when the motor 6 is locked or powered off, the rotation angle of the drive arm 9 is maintained when the motor 6 is locked or powered off The rotation angle of the driving arm 9 can precisely control the zooming of the zoom lens group 16 .

In the embodiment of the present invention, a first limit block 27 and a second limit block 26 are respectively provided on the base 2 , and the first limit block 27 and the second limit block 26 can limit the rotation of the driving arm 9 The angle range is 0～180°. When the drive arm 9 switches gears, because it is blocked by the first limit block 27 or the second limit block 26, the drive arm 9 stops rotating, the drive arm 9 remains in the position where it stops rotating, and the zoom lens group 16 is changed. Precise zoom.

Further, one end of the tension spring 18 is connected to the driving arm 9 , and the other end of the tension spring 18 is fixed on the base 2 .

Among them, if the first state switch 4 and the second state switch 12 respectively control the motor 6 to be locked, the rotation angle of the driving arm 9 is maintained at the rotation angle of the driving arm 9 when the motor 6 is locked, and the tension spring 18 further tightens the driving arm 9 .

Among them, for example, when the first state switch 4 and the second state switch 12 respectively control the motor 6 to power down:

During the process of changing the magnification mirror group 16 from the second gear to the first gear, the motor 6 drives the drive arm 9 to rotate to the first limit stop 27 , and the limit stop 25 cooperates with the first state switch 4 , the first state switch 4 controls the motor 6 to be powered off, and the rotation angle of the driving arm 9 is maintained at the rotation angle of the driving arm 9 when the motor 6 is powered off. In order to prevent the driving arm 9 from rotating after the motor 6 is powered off, the tension spring 18 is tightened The driving arm 9 fixes the rotation angle of the driving arm 9, and the gear of the variable magnification mirror group 16 is precisely switched to the first gear.

During the process of changing the magnification lens group 16 from the first gear to the second gear, the motor 6 drives the drive arm 9 to rotate to the second limit stop 26 , and the limit stop 25 cooperates with the second state switch 12 , the second state switch 12 controls the motor 6 to be powered off, and the rotation angle of the driving arm 9 is maintained at the rotation angle of the driving arm 9 when the motor 6 is powered off. In order to prevent the driving arm 9 from rotating after the motor 6 is powered off, the tension spring 18 is tightened The driving arm 9 fixes the rotation angle of the driving arm 9, and the gear of the variable magnification mirror group 16 is precisely switched to the first gear.

Further, one end of the tension spring 18 can be fixed on the driving arm 9 by the tension spring fixing screw 5 , and the other end of the tension spring 18 can be fixed on the base 2 by the tension spring fixing seat 19 .

Further, the base 2 and the zoom guide seat 15 are both installed on the installation platform 1 .

In the above embodiments of the present invention, the limiting block 25 can be installed on the driving arm 9 by means of screws, rivets, welding, glue connection or snap connection. The first limiting block 27 can be fixed on the base 2 by means of screws, rivets, welding, glue connection or snap connection.

The second limiting block 26 can be fixed on the base 2 by means of screws, rivets, welding, glue connection or snap connection.

The first limit block 27 and the second limit block 26 can be installed on corresponding two sides of the base 2 .

The first state switch 4 can be fixed on the first switch frame 3 by means of screws, rivets, welding, glue connection or snap connection.

The second state switch 12 can be fixed on the second switch frame 11 by means of screws, rivets, welding, glue connection or snap connection.

One end of the tension spring 18 can be fixed on the driving arm 9 by means of screws, rivets, welding, glue connection or snap connection, and the other end can be fixed on the base 2 by the tension spring fixing seat 19 .

In the above-mentioned embodiments of the present invention, the gear switching of the camera gear linear switching device may be switching between two gears or more than three gears; Switching between the first telephoto gear, the second telephoto gear, the first short focus gear, and the second short focus gear.

On the other hand, embodiments of the present invention provide a camera, including the camera gear linear switching device described in the above embodiments.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications made within the spirit and principles of the present invention—equivalent replacements and improvements, etc., should be included in the protection scope of the present invention. Inside.

Claims (7)

1. A camera gear linear switching device, characterized in that: it comprises a base (2) and a variable magnification guide seat (15), a motor (6) is arranged on the base (2), and the output end of the motor (6) is One end of the driving arm (9) is fixedly connected, the other end of the driving arm (9) is hinged to the driven arm (13), the driven arm (13) is sleeved with a moving block (14), and the driven arm (13) can be moved on the moving block (14) slides in the vertical direction, the variable magnification lens group (16) is arranged in the variable magnification guide seat (15), and the variable magnification lens group (16) can move in the horizontal direction in the variable magnification guide seat (15) to change the magnification The magnification lens group (16) is connected with the moving block (14), a sliding groove is provided in the variable magnification guide seat (15) along the horizontal direction, and the moving block (14) can move along the sliding groove; the upper limit of the driving arm (9) is set A position stopper (25), a first switch frame (3) and a second switch frame (11) are respectively provided on both sides of the base (2), and a first state switch (4) is installed on the first switch frame (3). ), a second state switch (12) is installed on the second switch frame (11), the limit stopper (25) can be matched with the first state switch (4) and the second state switch (12) respectively, the first state switch (4) and the second state switch (12) can respectively control the motor (6). 2. The camera gear linear switching device according to claim 1, wherein a first limit stop (27) and a second limit stop (26) are respectively provided on the base (2), The first limit stopper (27) and the second limit stopper (26) can limit the rotation angle of the driving arm (9) in the range of 0° to 180°. 3. The camera gear linear switching device according to claim 2, wherein the drive arm (9) is connected to one end of the tension spring (18), and the other end of the tension spring (18) is fixed on the base ( 2) on. 4. The camera gear linear switching device according to claim 1, characterized in that: the output end of the motor (6) is connected to a coupling, and the coupling is connected to one end of the drive shaft (10), and the drive shaft (10) ) is connected to the drive arm (9). 5 . The camera gear linear switching device according to claim 1 , wherein the other end of the driving arm ( 9 ) is fixedly connected to the driven arm shaft ( 17 ), and the driven arm shaft ( 17 ) is driven by the driven arm shaft ( 17 ). The arm bearing (24) is connected to the driven arm (13). 6 . The camera gear linear switching device according to claim 5 , wherein a mounting hole is provided in the base ( 2 ), the drive shaft ( 10 ) is located in the mounting hole, and the drive shaft ( 10 ) is sequentially fitted on the drive shaft ( 10 ). 7 . The drive bearing (20) and the bearing spacer (23), the bearing inner pressure ring (21) is screwed on the drive shaft (10), and the bearing inner pressure ring (21) locks the inner ring of the drive bearing (20); The bearing outer pressure ring (22) is installed in the hole through the thread, and the bearing outer pressure ring (22) locks the outer ring of the drive bearing (20). 7 . An optical camera, characterized in that it comprises a camera gear linear switching device according to any one of claims 1 to 6 . 8 .

Images