Focusing auxiliary mechanism
By using a motor-driven turntable and a focus auxiliary mechanism that can be extended into the jaws in the photography and video equipment, the problem of slipping of traditional focus gears is solved, the stability and accuracy of focus are improved, and high-quality photography and Camera test.
Patent Information
- Application Number
- CN202420810240.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-18
AI Technical Summary
In photography and camera testing, traditional focus gears and lenses are slipped through incisor contact between the two circles, resulting in dummy focus, zoom errors and aperture adjustment errors, affecting the quality and accuracy of photography.
A focus auxiliary mechanism is designed, including a main frame, a controller and a motor-driven turntable. The center of the turntable is equipped with a focus hole. There are at least two extendable jaws in the turntable contact with the lens, and the turntable is driven to rotate through the motor. Drive the lens to rotate, and achieve stable clamping and automatic focus of the jaws through the downward pressure power module and return spring.
The lens and clamping area are increased, the focus stability is improved, slippage is avoided, and the accuracy and efficiency of automatic focus is ensured. At the same time, the wiring and tubes are optimized, reducing the friction of the turntable and the wear of the parts.
Smart Images
Figure CN222213049U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of photography and videography, and particularly relates to a focusing auxiliary mechanism. Background Art
[0002] In conventional photography and videography industries or camera testing equipment, a single focus gear that is in contact with the lens is generally driven by a motor to rotate, so that the focus gear drives the lens to rotate, thereby achieving automatic focusing. Since the focus gear and the lens are in contact through two circumscribed circles, the focus gear and the lens are prone to slippage, making it easy to cause out-of-focus, zoom errors, and aperture adjustment errors during photography and videography and camera testing, thus affecting the quality of photography and videography and the accuracy of camera testing. Utility Model Content
[0003] The utility model aims to provide a focusing auxiliary mechanism to solve the technical problems mentioned in the background technology.
[0004] The focusing auxiliary mechanism includes a main frame and a controller, the main frame is equipped with a mounting frame for mounting a camera, the controller is used to connect with the camera signal, the main frame is provided with a control frame, the control frame is equipped with a motor connected with the controller signal, the motor drives a turntable, the center of the turntable is provided with a focusing hole for being sleeved on the lens, and the turntable is provided with at least two claws that can extend into the focusing hole and contact the lens.
[0005] According to the technical solution, the utility model can achieve the following beneficial effects:
[0006] When focusing the camera, the controller controls the motor to work according to the image captured by the camera mounted on the frame, the motor drives the turntable to rotate, and the turntable drives the lens to rotate through at least two clamping claws that can be inserted into the focusing hole and contact the lens, thereby realizing automatic focusing of the camera; since the utility model is provided with at least two clamping claws that contact the lens, the contact area with the lens is increased compared with the traditional focus gear, thereby solving the problem that the traditional focus gear and the lens group are prone to slipping, and improving the stability of focusing.
[0007] In order to further optimize the above technical solution, it can be optionally combined with one or more of the following implementation methods without conflict.
[0008] In the prior art, conventional clamps mainly use air cylinders or electric cylinders to directly drive the clamping jaws to move closer to each other. Since the clamping jaws of the utility model are arranged in the turntable, if conventional clamps are used to drive the clamping jaws to clamp the periphery of the lens group, the wiring and piping of the air cylinder or electric cylinder will limit the rotation stroke of the turntable.
[0009] Therefore, in some embodiments, a positioning column and a clamping slide rail are installed around the focusing hole, a clamping slider slides on the clamping slide rail, a tension spring, a pushing pulley and a clamping claw are installed on the clamping slider, the tension spring is connected to the positioning column, a pressure plate which is concentric and synchronously rotated and can be lifted and lowered is arranged above the turntable, the pressure plate is provided with an inclined push surface in contact with the pushing pulley, a downward pressing power module is installed on the control frame, and the downward pressing power module drives a downward pressing frame which can press the pressure plate downward;
[0010] According to the technical solution, the utility model can further achieve the following beneficial effects:
[0011] 1. When the clamping jaws are driven to move closer to each other to clamp the lens, the downward pressing power module drives the downward pressing frame to press the pressure plate downward. When the pressure plate is pressed downward, the pulley is pushed to move through the inclined push surface, and the pulley drives the clamping slider to move, so that all the clamping jaws move closer to each other to clamp the lens, so as to achieve stable rotation of the lens and further prevent slipping;
[0012] 2. Since the downward pressure power module is arranged outside the turntable, the wiring of the downward pressure power module will not affect the rotation of the turntable;
[0013] 3. When it is necessary to stop clamping the lens, the downward pressure power module drives the downward pressure frame to rise and reset, and the tension spring drives the clamping slider to move in the opposite direction, so that all the clamping claws can automatically open each other to stop clamping the lens, and the clamping slider pushes the inclined push surface to move by pushing the pulley to drive the pressure plate to rise and reset.
[0014] In some embodiments, the lower pressure frame contacts the pressure plate through the lower pressure wheel, and the lower pressure wheel is arranged to be inclined to the side of the rotation direction of the pressure plate; according to the technical solution, when the turntable rotates, the friction between the lower pressure frame and the pressure plate can be reduced, so that the turntable can rotate more stably and the life of the components can be improved.
[0015] In some embodiments, the turntable is provided with a guide hole, and the pressure plate is installed with a guide column passing through the guide hole; according to the technical solution, the pressure plate and the turntable can rotate synchronously more stably, and at the same time, the pressure plate can be lifted and lowered above the turntable more stably.
[0016] In some embodiments, a reset spring is provided between the turntable and the pressure plate; according to the technical solution, when the lens stops being clamped, the reset spring drives the pressure plate to rise and reset in advance, thereby reducing the resistance when the clamping jaws open to each other.
[0017] In some embodiments, the main frame is equipped with a shift power module for driving the control frame to shift, and the shift power module is connected to the controller signal; according to the technical solution, the frame is shifted by the shift power module, so that the clamp on the drive frame moves accordingly, so that the utility model further achieves the following beneficial effects:
[0018] 1. After the camera is mounted on the mounting frame, the clamping claw can automatically move to the side of the lens to improve the convenience of camera installation. At the same time, before the camera is removed from the mounting frame, the clamping claw can automatically move away from the side of the lens to facilitate the removal of the camera;
[0019] 2. When adjusting the focus, the clamping jaws can be moved to the focusing position or zooming position of the lens by shifting the clamping jaws, thereby realizing automatic or simultaneous focusing and zooming.
[0020] In some embodiments, the shift power module drives a shift plate, the shift plate is equipped with a shift slide rail and a shift spring, the control frame is equipped with a shift slider that cooperates with the shift slide rail, and the shift spring is connected to the control frame; according to the technical solution, in order to address the problem that some lenses will rise and fall when focusing or zooming, thereby driving the lens to rotate, the lens can drive the clamp to move, thereby avoiding damage to the lens group. At the same time, at the moment when the clamp contacts the lens and drives the lens group to rotate, caching can be achieved through the shift spring. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the specific implementation of the present invention, the following is a brief description of the drawings and reference numerals required to be used in the description of the specific implementation.
[0022] Figure 1 It is a structural schematic diagram of the utility model;
[0023] Figure 2 It is a structural schematic diagram of the control frame of the utility model;
[0024] Figure 3 is a cross-sectional view of the shift plate of the utility model;
[0025] Figure 4 is a cross-sectional view of the control frame of the utility model;
[0026] Figure 5 It is a cross-sectional view of the turntable of the utility model.
[0027] Reference numerals:
[0028] 1. General frame; 12. Mounting frame; 2. Control frame; 21. Motor; 3. Clamping claw; 41. Turntable; 42. Focusing hole; 43. Positioning column; 44. Clamping slide rail; 45. Clamping slider; 46. Tension spring; 47. Push pulley; 48. Guide hole; 51. Pressure plate; 52. Inclined push surface; 53. Pressing power module; 54. Pressing frame; 55. Pressing wheel; 56. Guide column; 57. Reset spring; 61. Shifting power module; 62. Shifting plate; 63. Shifting slide rail; 64. Shifting spring; 65. Shifting slider. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, this specific implementation method refers to the accompanying drawings to further describe the utility model in detail.
[0030] like Figures 1 to 5 As shown, this specific embodiment provides a focusing auxiliary mechanism, which includes a main frame 1 and a controller.
[0031] like Figure 1 As shown, the main frame 1 is equipped with a mounting frame 12 and a shift power module 61. The mounting frame 12 is used to mount the camera, and the controller is used to connect with the camera signal. In addition, a focus unit can be optionally installed on the mounting frame 12 so that the controller can focus more accurately.
[0032] like Figures 2 to 4 As shown, the shift power module 61 is connected to the controller signal. The shift power module 61 can be selected as a screw module or a cylinder module. The shift power module 61 drives a shift plate 62. The shift plate 62 is equipped with a shift slide rail 63 and a shift spring 64. The shift slide rail 63 slides with the control frame 2 through a shift slider 65. The shift spring 64 is connected to the control frame 2 to support the control frame 2.
[0033] like Figure 4 and 5 As shown, the control frame 2 is installed with a motor 21 and a downward pressing power module 53. The motor 21 is connected to the controller signal, and the motor 21 drives a turntable 41. The center of the turntable 41 is provided with a focusing hole 42 for being sleeved on the lens. At least two groups of clamping units are installed symmetrically around the focusing hole 42. The clamping units specifically include a positioning column 43 and a clamping slide rail 44. A clamping slider 45 slides on each clamping slide rail 44. The clamping slider 45 is installed with a tension spring 46, a push pulley 47 and a clamping claw 3. The tension spring 46 is connected to the positioning column 43. A pressure plate 51 is arranged above the turntable 41. The turntable 41 is provided with a guide hole 48. The pressure plate 51 is equipped with a guide column 56 passing through the guide hole 48, so that the pressure plate 51 and the turntable 41 can rotate concentrically and synchronously, and the pressure plate 51 can move up and down above the turntable 41. A reset spring 57 is arranged between the turntable 41 and the pressure plate 51. The pressure plate 51 is provided with an inclined push surface 52 in contact with the push pulley 47, so that when the pressure plate 51 descends, it can push all the clamping claws 3 into the focusing hole 42 to clamp the lens. The pressing power module 53 is connected to the controller signal. The pressing power module 53 can be a screw module or a cylinder module. The pressing power module 53 drives a lower pressing frame 54 that can press the pressure plate 51 downward. The lower pressing frame 54 contacts the pressure plate 51 through a lower pressing wheel 55. The lower pressing wheel 55 is arranged obliquely to the rotation direction of the pressure plate 51.
[0034] The following is a working process of a focusing auxiliary mechanism described in this specific implementation:
[0035] The camera is installed on the mounting frame 12, and the camera is connected to the controller signal at the same time; thereafter, the shift power module 61 drives the control frame 2 to move, and the control frame 2 drives the turntable 41 to move, so that the focusing hole 42 on the turntable 41 is put on the lens, and at this time, the clamping claw 3 is located around the lens; thereafter, the pressing power module 53 drives the lower pressing frame 54 to descend, and the lower pressing frame 54 presses down the pressure plate 51 through the lower pressing wheel 55, and the pressure plate 51 pushes the pulley 47 to move through the inclined pushing surface 52, and the pulley 47 drives the clamping slider 45 to move, so that all the clamping claws 3 are close to each other to clamp the lens; thereafter, the controller controls the motor 21 to work according to the picture captured by the camera on the mounting frame 12 or / and the sensing parameters of the focus unit, and the motor 21 drives the turntable 41 to rotate, and the turntable 41 drives the lens to rotate through the clamping claw 3, thereby realizing automatic focusing of the camera, and when the turntable 41 rotates, it synchronously drives the pressure plate 51 to rotate, and the lower pressing wheel 55 rotates on the pressure plate 51.
[0036] When the camera needs to be taken out, the pressing power module 53 drives the pressing frame 54 to rise and reset. At this time, the tension spring 46 drives the clamping slider 45 to move in the opposite direction, so that all the clamping claws 3 can automatically open each other to stop clamping the lens. At the same time, the reset spring 57 drives the pressure plate 51 to rise and reset in advance, and the clamping slider 45 also drives the inclined push surface 52 to move by pushing the pulley 47 to drive the pressure plate 51 to rise and reset; thereafter, the shifting power module 61 drives the control frame 2 to move in the opposite direction, and the control frame 2 drives the turntable 41 to move in the opposite direction, so that the focusing hole 42 on the turntable 41 moves away from the lens.
[0037] When it is necessary to change the clamping position of the lens by the clamping jaws 3 (that is, it is necessary to move from the focus ring of the lens clamped by the clamping jaws 3 to the zoom ring), the clamping jaws 3 release the clamping of the lens. Thereafter, the shifting power module 61 drives the control frame 2 to shift, and the control frame 2 drives the turntable 41 to shift. The shifting of the turntable 41 causes the focusing hole 42 to shift accordingly. At this time, the clamping jaws 3 also move from a certain position on the lens to another position; thereafter, the clamping jaws 3 move closer to each other to clamp the lens.
Claims
1. A focusing auxiliary mechanism, comprising a main frame (1) and a controller, wherein the main frame (1) is equipped with a mounting frame (12) for mounting a camera, and the controller is used for connecting with camera signals, characterized in that: The main frame (1) is provided with a control frame (2), the control frame (2) is equipped with a motor (21) connected to the controller signal, the motor (21) drives a turntable (41), the center of the turntable (41) is provided with a focusing hole (42) for being sleeved on a lens, and the turntable (41) is provided with at least two clamping claws (3) that can extend into the focusing hole (42) and contact the lens.
2. A focusing auxiliary mechanism according to claim 1, characterized in that: A positioning column (43) and a clamping slide rail (44) are installed around the focusing hole (42); a clamping slider (45) is slidably mounted on the clamping slide rail (44); the clamping slider (45) is installed with a tension spring (46), a pushing pulley (47) and the clamping claw (3); the tension spring (46) is connected to the positioning column (43); a pressure plate (51) is arranged above the turntable (41) and is coaxial and synchronously rotatable and movable to be raised and lowered; the pressure plate (51) is provided with an inclined push surface (52) in contact with the pushing pulley (47); a downward pressing power module (53) is installed on the control frame (2); the downward pressing power module (53) drives a downward pressing frame (54) which can press the pressure plate (51) downward.
3. A focusing auxiliary mechanism according to claim 2, characterized in that: The lower pressing frame (54) contacts the pressing plate (51) via a lower pressing wheel (55), and the lower pressing wheel (55) is arranged to be inclined to the side of the rotation direction of the pressing plate (51).
4. A focusing auxiliary mechanism according to claim 2, characterized in that: The rotating disk (41) is provided with a guide hole (48), and the pressure plate (51) is provided with a guide column (56) passing through the guide hole (48).
5. A focusing auxiliary mechanism according to claim 4, characterized in that: A return spring (57) is provided between the rotating disk (41) and the pressure disk (51).
6. A focusing auxiliary mechanism according to any one of claims 1 to 5, characterized in that: The main frame (1) is equipped with a displacement power module (61) for driving the control frame (2) to shift, and the displacement power module (61) is connected to the controller signal.
7. A focusing auxiliary mechanism according to claim 6, characterized in that: The shift power module (61) drives a shift plate (62), the shift plate (62) is installed with a shift slide rail (63) and a shift spring (64), the control frame (2) is installed with a shift slider (65) cooperating with the shift slide rail (63), and the shift spring (64) is connected to the control frame (2).