Electric doubling structure

Abstract

The utility model is suitable for the technical field of video recording equipment, and provides an electric magnification structure used for increasing the optical zoom multiple of a camera, the camera is fixedly installed on a holder, the camera comprises a side shell, a magnification lens and a driving structure, the driving structure comprises an installation plate, a sliding block, a third gear, a fixed rack, a movable rack and a power mechanism, according to the electric multiplying structure provided by the utility model, by arranging the side shell, the multiplying lens and the driving structure, when multiplying is needed, the power structure drives the sliding block and the third gear to slide towards one side close to the camera, and the third gear and the fixed rack move relatively, so that the third gear rotates; the third gear further drives the movable rack to quickly move towards one side close to the camera, the movable rack drives the magnification lens to move to a magnification position, magnification is automatically completed, and when magnification is not needed, the power mechanism drives the sliding block and the third gear to reset, the third gear rotates reversely to drive the movable rack to reset, and the movable rack drives the magnification lens to reset.

Description

Technical Field

[0001] The utility model belongs to the technical field of video recording equipment, and in particular relates to an electric multiplication structure. Background Art

[0002] Video recording equipment is very common in daily life. It is installed in every street and every household. In some cases, in order to obtain a larger recording range, the video recording equipment is generally installed in a higher position, such as on a building, lamppost, or wall.

[0003] Sometimes, in order to capture images from farther away, the current camera or lens generally uses an extender to capture images if the optical zoom ratio of the current camera is insufficient. Therefore, the camera installed at a high place needs to be installed by staff using ladders or other tools. This operation is unsafe and troublesome. Utility Model Content

[0004] The utility model provides an electric multiplication structure, aiming to solve the above problems.

[0005] The utility model is realized as follows: an electric zoom structure for increasing the optical zoom factor of a camera, wherein the camera is fixedly mounted on a pan / tilt platform, comprising:

[0006] A side shell mounted on the camera, wherein the inner cavity of the side shell is connected to the inner cavity of the camera and forms a mounting cavity;

[0007] A magnification lens disposed in the mounting cavity;

[0008] A driving structure is used to drive the magnification lens to move to the magnification position or leave the magnification position, and the driving structure includes:

[0009] A mounting plate fixed to the side wall of the side housing away from the camera;

[0010] A slider is slidably mounted on the mounting plate, wherein the mounting plate is provided with a sliding groove along its length for sliding connection of the slider;

[0011] A third gear mounted on the slider is rotated, and a fixed rack and a movable rack are respectively provided on the upper and lower sides of the third gear to engage with the third gear. The fixed rack is fixedly connected to the mounting plate, and the movable rack is slidably connected to the mounting plate along the length direction of the mounting plate. The end of the movable rack close to the camera extends to the outside of the mounting plate and is fixedly connected to the magnification lens;

[0012] The power mechanism is used to drive the slider to slide along the length direction of the mounting plate.

[0013] Preferably, the power mechanism comprises:

[0014] A telescopic rod is provided in the installation cavity and can be freely extended and retracted. One end of the telescopic rod is hinged to the slider, and the other end of the telescopic rod is fixed to the rotating shaft, and the rotating shaft is rotatably connected to the side shell;

[0015] The power part is used to drive the shaft to rotate.

[0016] Preferably, the power member includes:

[0017] A mounting rod is provided on the outside of the side shell, one end of the mounting rod is fixedly connected to the end of the rotating shaft extending to the outside of the side shell;

[0018] an arc-shaped rack fixed to the other end of the mounting rod, wherein the center of the arc-shaped rack is located on the axis of the rotating shaft;

[0019] An oscillating member used to drive the arc-shaped rack to oscillate.

[0020] Preferably, the swing member is mounted on the platform, and the swing member includes:

[0021] A mounting shell fixedly connected to the gimbal;

[0022] A micro motor fixed on the mounting housing, the micro motor being a forward and reverse motor, and a first gear being fixed on the output shaft of the micro motor;

[0023] A second gear mounted on the mounting shell is rotatably mounted, wherein the size of the second gear is larger than the first gear, and the second gear is respectively engaged with the first gear and the arc-shaped rack.

[0024] Preferably, an encoder is fixedly mounted on one side of the second gear on the mounting shell for monitoring the rotation angle of the second gear.

[0025] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0026] The electric magnification structure provided by the utility model is provided with a side shell, a magnification lens and a driving structure. The driving structure includes a mounting plate, a slider, a third gear, a fixed rack, a movable rack and a power mechanism. When magnification is required, the power structure drives the slider and the third gear to slide toward the side close to the camera, and the third gear moves relative to the fixed rack, so that the third gear rotates, and the third gear further drives the movable rack to move quickly toward the side close to the camera. The movable rack drives the magnification lens to move to the magnification position, and the magnification is automatically completed. When magnification is not required, the power mechanism drives the slider and the third gear to reset, and the third gear reverses to drive the movable rack to reset, and the movable rack drives the magnification lens to reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural diagram of an electric multiplication structure provided by the utility model;

[0028] Figure 2 This is a structural diagram of an arc-shaped rack and a mounting rod in an electric multiplication structure provided by the utility model;

[0029] Figure 3 yes Figure 1 A in the enlarged view.

[0030] Notes on the accompanying drawings: 1. Camera; 2. Side shell; 3. Magnification lens; 4. Mounting plate; 5. Fixed rack; 6. Slide groove; 7. Movable rack; 8. Slider; 9. Third gear; 10. Telescopic rod; 11. Mounting rod; 12. Arc rack; 13. Second gear; 14. First gear; 15. Encoder. DETAILED DESCRIPTION

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0032] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] The present invention provides an electric multiplication structure. Figure 1-Figure 3 As shown, it is used to increase the optical zoom ratio of the camera. The camera is fixedly mounted on the pan-tilt head. The electric zoom structure includes:

[0034] A side shell mounted on the camera, wherein the inner cavity of the side shell is connected to the inner cavity of the camera and forms a mounting cavity;

[0035] A magnification lens disposed in the mounting cavity;

[0036] A driving structure is used to drive the magnification lens to move to the magnification position or leave the magnification position, and the driving structure includes:

[0037] The mounting plate is fixed on the side wall of the side housing away from the camera and can be fixed by screws;

[0038] A slider is slidably mounted on the mounting plate, wherein the mounting plate is provided with a sliding groove along its length for sliding connection of the slider;

[0039] A third gear mounted on the slider is rotated, and a fixed rack and a movable rack are respectively provided on the upper and lower sides of the third gear to engage with the third gear. The fixed rack is fixedly connected to the mounting plate and can be fixed in an integrated manner. The movable rack is slidably connected to the mounting plate along the length direction of the mounting plate. The end of the movable rack close to the camera extends to the outside of the mounting plate and is fixedly connected to the magnification lens;

[0040] The power mechanism is used to drive the slider to slide along the length direction of the mounting plate.

[0041] When magnification is required, the power structure drives the slider and the third gear to slide toward the side close to the camera, and the third gear moves relative to the fixed rack, causing the third gear to rotate, and the third gear further drives the movable rack to move quickly toward the side close to the camera, and the movable rack drives the magnification lens to move to the magnification position, automatically completing the magnification. When magnification is not required, the power mechanism drives the slider and the third gear to reset, and the third gear reverses to drive the movable rack to reset, and the movable rack drives the magnification lens to reset. In this embodiment, the movement distance of the magnification lens is approximately twice the movement distance of the slider, which can reduce the overall space occupied by the driving structure.

[0042] Wherein, the power mechanism includes:

[0043] A telescopic rod is provided in the installation cavity and can be freely extended and retracted. One end of the telescopic rod is hinged to the slider, and the other end of the telescopic rod is fixed to the rotating shaft, and the rotating shaft is rotatably connected to the side shell;

[0044] The power part is used to drive the shaft to rotate.

[0045] Specifically, the power piece drives the rotating shaft to rotate, the rotating shaft drives the telescopic rod to rotate, and the telescopic rod drives the slider to slide along the sliding groove.

[0046] Furthermore, the power member includes:

[0047] A mounting rod is provided on the outside of the side shell, one end of the mounting rod is fixedly connected to the end of the rotating shaft extending to the outside of the side shell;

[0048] an arc-shaped rack fixed to the other end of the mounting rod, wherein the center of the arc-shaped rack is located on the axis of the rotating shaft;

[0049] An oscillating member for driving the arc-shaped rack to oscillate;

[0050] It can be understood that the rack is driven to swing by the swinging member, the rack drives the rotating shaft to rotate forward and reverse through the mounting rod, the rotating shaft drives the telescopic rod to swing forward and reverse, and the telescopic rod drives the slider to slide.

[0051] Furthermore, the swing member is mounted on the platform, and the swing member includes:

[0052] A mounting shell fixedly connected to the gimbal;

[0053] A micro motor fixed to the mounting housing can be fixed by screws. The micro motor is a forward and reverse motor that can be controlled by a remote control or a button. A first gear is fixed to the output shaft of the micro motor.

[0054] Rotating a second gear mounted on the mounting housing, wherein the second gear is larger than the first gear, and the second gear is engaged with the first gear and the arc-shaped rack respectively;

[0055] The micro motor is started, the micro motor drives the first gear, the first gear drives the second gear to rotate, and the second gear drives the arc rack to rotate.

[0056] In this embodiment, an encoder is fixedly mounted on one side of the second gear on the mounting housing for monitoring the rotation angle of the second gear.

[0057] In summary, the present invention provides an electric multiplication structure, the working principle of which is as follows:

[0058] When doubling is required, start the micromotor, the micromotor drives the first gear, the first gear drives the second gear to rotate, the second gear drives the arc-shaped rack to rotate, the arc-shaped rack drives the telescopic rod to rotate through the rotating shaft, the telescopic rod drives the slider to slide along the slide groove, the slider drives the third gear to slide toward the side close to the camera, the third gear and the fixed rack move relative to each other, so that the third gear rotates, the third gear further drives the movable rack to move quickly toward the side close to the camera, the movable rack drives the multiplying lens to move to the multiplying position, and the multiplying is automatically completed. When doubling is not required, the power mechanism drives the slider and the third gear to reset, the third gear reverses to drive the movable rack to reset, and the movable rack drives the multiplying lens to reset.

[0059] It should be noted that, for the sake of simplicity, the aforementioned embodiments are described as a series of action combinations. However, those skilled in the art should be aware that the present invention is not limited by the order of the actions described, because according to the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0060] The above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on these embodiments, all other embodiments derived by persons of ordinary skill in the art without inventive effort are also within the scope of protection of the present invention.

Claims

1. An electric zoom mechanism for increasing the optical zoom of a camera, wherein the camera is fixedly mounted on a pan / tilt platform, characterized in that: include: A side shell mounted on the camera, wherein the inner cavity of the side shell is connected to the inner cavity of the camera and forms a mounting cavity; A magnification lens disposed in the mounting cavity; A driving structure is used to drive the magnification lens to move to the magnification position or leave the magnification position, and the driving structure includes: A mounting plate fixed to the side wall of the side housing away from the camera; A slider is slidably mounted on the mounting plate, wherein the mounting plate is provided with a sliding groove along its length for sliding connection of the slider; A third gear mounted on the slider is rotated, and a fixed rack and a movable rack are respectively provided on the upper and lower sides of the third gear to engage with the third gear. The fixed rack is fixedly connected to the mounting plate, and the movable rack is slidably connected to the mounting plate along the length direction of the mounting plate. The end of the movable rack close to the camera extends to the outside of the mounting plate and is fixedly connected to the magnification lens; The power mechanism is used to drive the slider to slide along the length direction of the mounting plate.

2. The electric multiplication structure according to claim 1, characterized in that: The power mechanism comprises: A telescopic rod is provided in the installation cavity and can be freely extended and retracted. One end of the telescopic rod is hinged to the slider, and the other end of the telescopic rod is fixed to a rotating shaft, which is rotatably connected to the side shell. The power part is used to drive the shaft to rotate.

3. The electric multiplication structure according to claim 2, characterized in that: The power member includes: A mounting rod is provided on the outside of the side shell, one end of the mounting rod is fixedly connected to the end of the rotating shaft extending to the outside of the side shell; an arc-shaped rack fixed to the other end of the mounting rod, wherein the center of the arc-shaped rack is located on the axis of the rotating shaft; An oscillating member used to drive the arc-shaped rack to oscillate.

4. The electric multiplication structure according to claim 3, characterized in that: The swinging member is mounted on the platform, and the swinging member includes: A mounting shell fixedly connected to the gimbal; A micro motor fixed on the mounting housing, the micro motor being a forward and reverse motor, and a first gear being fixed on the output shaft of the micro motor; A second gear mounted on the mounting shell is rotatably mounted, wherein the size of the second gear is larger than the first gear, and the second gear is respectively engaged with the first gear and the arc-shaped rack.

5. The electric multiplication structure according to claim 4, characterized in that: An encoder is fixedly mounted on one side of the second gear on the mounting shell for monitoring the rotation angle of the second gear.

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