CN113093358A - High-precision constant-speed controllable mechanical zoom ring - Google Patents
High-precision constant-speed controllable mechanical zoom ring Download PDFInfo
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- CN113093358A CN113093358A CN202110274069.3A CN202110274069A CN113093358A CN 113093358 A CN113093358 A CN 113093358A CN 202110274069 A CN202110274069 A CN 202110274069A CN 113093358 A CN113093358 A CN 113093358A
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- fixing frame
- inner cylinder
- screw rod
- lens fixing
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- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
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- Physics & Mathematics (AREA)
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- Optics & Photonics (AREA)
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Abstract
The invention discloses a high-precision constant-speed controllable mechanical zoom ring, which comprises an outer cylinder, an inner cylinder, a rotating ring, a convex mirror, a lens fixing frame and a screw rod, wherein the inner cylinder is connected with the outer cylinder in a sliding manner, the rotating ring is connected with the inner cylinder in a rotating manner, one end of the screw rod is connected with the inner cylinder in a rotating manner, the lens fixing frame is connected with the screw rod in a transmission manner, the lens fixing frame is connected with the inner cylinder in a sliding manner, when the rotating ring is rotated, the screw rod rotates along with the rotation of the rotating ring, the screw rod rotates to drive the lens fixing frame to slide in the inner cylinder, so that the position of the convex mirror is adjusted to change the focal length of a lens, and the inner cylinder is connected with the outer cylinder in a sliding manner, so that the position of the inner cylinder relative to the outer cylinder can be adjusted, thereby improving the zoom range of the zoom ring.
Description
Technical Field
The invention relates to the technical field of zoom rings, in particular to a high-precision constant-speed controllable mechanical zoom ring.
Background
The zoom ring is also called a rotary zoom ring, and can change the focal length of the lens to obtain different view angle ranges, while the zoom range of the existing zoom ring is smaller.
Disclosure of Invention
The present invention is directed to a high-precision constant-speed controllable mechanical zoom ring, so as to improve the zoom range of the zoom ring.
In order to achieve the above object, the present invention provides a high-precision constant-speed controllable mechanical zoom ring, which comprises an outer cylinder, an inner cylinder, a rotating ring, a convex mirror, a lens fixing frame and a screw rod, wherein the inner cylinder is slidably connected with the outer cylinder, the inner cylinder is located inside the outer cylinder, the inner cylinder is provided with an installation cavity, the rotating ring is sleeved on the inner cylinder, the rotating ring is rotatably connected with the inner cylinder, an inner toothed ring is arranged inside the rotating ring, the screw rod is located inside the installation cavity, one end of the screw rod is rotatably connected with the inner cylinder, the other end of the screw rod is provided with an outer toothed ring matched with the inner toothed ring, the outer toothed ring of the screw rod is meshed with the inner toothed ring of the rotating ring, the lens fixing frame is in transmission connection with the screw rod, the lens fixing frame is slidably connected with the inner cylinder, and the lens fixing frame is located inside the inner cylinder, the convex mirror is fixedly arranged inside the lens fixing frame.
The lens fixing frame comprises an inner barrel, an inner side surface of the inner barrel is provided with mounting cavities, the number of the screw rods is two, the mounting cavities are arranged on the upper side and the lower side of the inner side surface of the inner barrel, the two screw rods are arranged in the two mounting cavities of the inner barrel respectively, and the upper end and the lower end of the lens fixing frame are in transmission connection with the two screw rods respectively.
The lens fixing frame is provided with a positioning frame, the positioning frame is provided with an internal thread, the positioning frame is in threaded connection with the screw rod, the screw rod penetrates through the positioning frame, and the positioning frame is located inside the installation cavity.
The high-precision constant-speed controllable mechanical zoom ring further comprises a ball, a notch is formed in the side face of the positioning frame, the ball is clamped inside the notch, and the ball is attached to the inner side face of the installation cavity.
The inner cylinder is further provided with a positioning groove, the positioning groove is located on the inner side face of the installation cavity, and one end, far away from the outer toothed ring, of the screw rod is located inside the positioning groove.
Wherein, the controllable machinery of high accuracy constant speed ring of zooming still includes solid fixed ring, the fixed ring is equipped with the inclined plane screw thread, the inside of urceolus have with inclined plane screw thread assorted thread groove, gu fixed ring with urceolus threaded connection, just gu fixed ring overlaps and establishes the outside of inner tube.
The invention has the beneficial effects that: the lens mount with inner tube sliding connection, the lens mount can drive the convex mirror is in the inside of inner tube slides, the outer ring gear of screw rod with the interior ring gear of rotating ring meshes mutually, the lens mount with the screw rod transmission is connected, rotates during the rotating ring, the screw rod is along with the rotation of rotating ring rotates, the screw rod rotates the drive the lens mount and is in the inside of inner tube slides, thereby adjusts the position of convex mirror, in order to change the focus of camera lens, just the inner tube with urceolus sliding connection can adjust the inner tube for the position of urceolus to adjust the length of whole lens cone, also can change the focus of camera lens, thereby improve the zoom range of ring.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a high-precision constant-speed controllable mechanical zoom ring of the present invention.
Fig. 2 is a cross-sectional view at a-a of fig. 1 of the present invention.
Fig. 3 is a cross-sectional view at B-B of fig. 1 of the present invention.
Fig. 4 is a cross-sectional view at C-C of fig. 1 of the present invention.
1-outer cylinder, 11-thread groove, 12-limit port, 2-inner cylinder, 21-installation cavity, 22-positioning groove, 23-limit column, 3-rotating ring, 31-inner gear ring, 4-convex mirror, 5-lens fixing frame, 51-positioning frame, 511-notch, 52-internal thread, 6-screw, 61-outer gear ring, 7-ball, 8-fixing ring, 81-inclined plane thread and 9-bracket.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 4, the present invention provides a technical solution: the utility model provides a controllable mechanical zoom ring of high accuracy constant speed, includes urceolus 1, inner tube 2, swivel ring 3, convex mirror 4, lens mount 5 and screw rod 6, inner tube 2 with 1 sliding connection of urceolus, inner tube 2 is located the inside of urceolus 1, inner tube 2 has installation cavity 21, swivel ring 3 cover is established on inner tube 2, swivel ring 3 with inner tube 2 rotates to be connected, the inside of swivel ring 3 is equipped with interior ring gear 31, screw rod 6 is located the inside of installation cavity 21, the one end of screw rod 6 with inner tube 2 rotates to be connected, the other end of screw rod 6 be equipped with interior ring gear 31 assorted outer ring gear 61, the outer ring gear 61 of screw rod 6 with the interior ring gear 31 of swivel ring 3 meshes mutually, lens mount 5 with screw rod 6 transmission is connected, lens mount 5 with inner tube 2 sliding connection, the lens fixing frame 5 is located inside the inner barrel 2, and the convex lens 4 is fixedly installed inside the lens fixing frame 5.
In this embodiment, the convex mirror 4 is fixedly installed inside the lens fixing frame 5, the lens fixing frame 5 is slidably connected to the inner cylinder 2, the lens fixing frame 5 can drive the convex mirror 4 to slide inside the inner cylinder 2, the outer toothed ring 61 of the screw rod 6 is engaged with the inner toothed ring 31 of the rotating ring 3, the lens fixing frame 5 is in transmission connection with the screw rod 6, when the rotating ring 3 is rotated, the screw rod 6 rotates along with the rotation of the rotating ring 3, the screw rod 6 rotates to drive the lens fixing frame 5 to slide inside the inner cylinder 2, so as to adjust the position of the convex mirror 4 to change the focal length of the lens, and the inner cylinder 2 is slidably connected to the outer cylinder 1, so as to adjust the position of the inner cylinder 2 relative to the outer cylinder 1, so as to adjust the length of the entire lens barrel, the focal length of the lens can be changed, thereby improving the zoom range of the zoom ring.
Further, the number of the screw rods 6 is two, the mounting cavities 21 are arranged on the upper side and the lower side of the inner side surface of the inner cylinder 2, the two screw rods 6 are respectively arranged in the two mounting cavities 21 of the inner cylinder 2, and the upper end and the lower end of the lens fixing frame 5 are respectively in transmission connection with the two screw rods 6.
In this embodiment, the upper and lower ends of the lens fixing frame 5 are both in transmission connection with the screws 6, and the two screws 6 simultaneously transmit the lens fixing frame 5 to limit the position of the lens fixing frame 5, so as to improve the stability of the lens fixing frame 5 moving inside the inner cylinder 2.
Further, the lens fixing frame 5 is provided with a positioning frame 51, the positioning frame 51 is provided with an internal thread 52, the positioning frame 51 is in threaded connection with the screw rod 6, the screw rod 6 is arranged on the positioning frame 51 in a penetrating manner, and the positioning frame 51 is located inside the installation cavity 21.
In this embodiment, the positioning frames 51 are disposed at the upper and lower ends of the lens fixing frame 5, and the two screws 6 are respectively inserted into the two positioning frames 51 to transmit the lens fixing frame.
Furthermore, the high-precision constant-speed controllable mechanical zoom ring further comprises a ball 7, a notch 511 is formed in the side face of the positioning frame 51, the ball 7 is clamped in the notch 511, and the ball 7 is attached to the inner side face of the mounting cavity 21.
In this embodiment, the ball 7 can roll inside the notch 511, and the ball 7 is attached to the inner side surface of the mounting cavity 21, so that friction between the positioning frame 51 and the inner side surface of the mounting cavity 21 is reduced, the movement of the lens fixing frame 5 is more convenient, and the movement accuracy of the high-precision constant-speed controllable mechanical zoom ring can be increased.
Further, the inner cylinder 2 further has a positioning groove 22, the positioning groove 22 is located on the inner side surface of the installation cavity 21, and one end of the screw 6, which is far away from the outer toothed ring 61, is located inside the positioning groove 22.
In the present embodiment, an end of the screw 6, which is far from the outer ring gear 61, is located inside the positioning groove 22, so that the position of the screw 6 is restricted to fix the screw 6.
Further, controllable machinery of high accuracy constant speed ring zoom still includes solid fixed ring 8, gu fixed ring 8 is equipped with inclined plane screw thread 81, the inside of urceolus 1 have with inclined plane screw thread 81 assorted thread groove 11, gu fixed ring 8 with 1 threaded connection of urceolus, just gu fixed ring 8 cover is established the outside of inner tube 2.
In the present embodiment, the fixing ring 8 is provided with a slope thread 81, the slope thread 81 is provided with an opening so that the diameter of the slope thread 81 can be compressed, the outer cylinder 1 has a thread groove 11 matching with the slope thread 81, the slope thread 81 is engaged with the thread groove 11, when the fixing ring 8 is tightened, the slope thread 81 moves toward the inside of the thread groove 11, the diameter of the slope thread 81 is compressed to fix the inner cylinder 2 to the outer cylinder 1, when the fixing ring 8 is loosened, the slope thread 81 moves toward the outside of the thread groove 11, the diameter of the slope thread 81 becomes larger to loosen the inner cylinder 2 to enable sliding between the inner cylinder 2 and the outer cylinder 1.
Further, the outside of inner tube 2 extends along self axis direction and has spacing post 23, spacing post 23 with inner tube 2 integrated into one piece, urceolus 1 have with spacing mouthful 12 of spacing post 23 assorted, spacing post 23 is located the inside of spacing mouthful 12.
In the present embodiment, the stopper post 23 can slide inside the stopper opening 12, and the stopper post 23 and the stopper opening 12 cooperate with each other to restrict the position of the inner cylinder 2 and prevent the inner cylinder 2 from rotating relative to the outer cylinder 1.
Further, controllable mechanical zoom ring of high accuracy constant speed still includes bracket 9, bracket 9 with inner tube 2 fixed connection, bracket 9 is located inner tube 2 is kept away from the one end of urceolus 1, just bracket 9 is located the bottom of inner tube 2.
In the present embodiment, the bracket 9 is fixedly installed at the bottom of one end of the inner cylinder 2 far away from the outer cylinder 1, so that a worker can conveniently lift the inner cylinder 2.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A high-precision constant-speed controllable mechanical zoom ring is characterized in that,
comprises an outer cylinder, an inner cylinder, a rotating ring, a convex mirror, a lens fixing frame and a screw rod, wherein the inner cylinder is connected with the outer cylinder in a sliding way, the inner cylinder is positioned in the outer cylinder, the inner cylinder is provided with an installation cavity, the rotating ring is sleeved on the inner cylinder, the rotating ring is rotationally connected with the inner cylinder, an inner gear ring is arranged inside the rotating ring, the screw rod is positioned inside the mounting cavity, one end of the screw is rotationally connected with the inner cylinder, the other end of the screw is provided with an outer toothed ring matched with the inner toothed ring, the outer toothed ring of the screw is meshed with the inner toothed ring of the rotating ring, the lens fixing frame is in transmission connection with the screw, the lens fixing frame is connected with the inner barrel in a sliding mode, the lens fixing frame is located inside the inner barrel, and the convex lens is fixedly installed inside the lens fixing frame.
2. The high precision constant speed controllable mechanical zoom ring of claim 1,
the lens fixing frame comprises an inner barrel, mounting cavities are arranged on the upper side and the lower side of the inner side face of the inner barrel, the two screws are arranged in the two mounting cavities of the inner barrel respectively, and the upper end and the lower end of the lens fixing frame are in transmission connection with the two screws respectively.
3. The high precision constant speed controllable mechanical zoom ring of claim 2,
the lens mount is equipped with the locating rack, the locating rack has the internal thread, the locating rack with screw rod threaded connection, the screw rod is worn to establish on the locating rack, just the locating rack is located the inside of installation cavity.
4. The high precision constant speed controllable mechanical zoom ring of claim 3,
the high-precision constant-speed controllable mechanical zoom ring further comprises a ball, a notch is formed in the side face of the positioning frame, the ball is clamped inside the notch, and the ball is attached to the inner side face of the mounting cavity.
5. The high precision constant speed controllable mechanical zoom ring of claim 4,
the inner tube still has the constant head tank, the constant head tank is located the medial surface department of installation cavity, the screw rod is kept away from the one end of outer ring gear is located the inside of constant head tank.
6. The high precision constant speed controllable mechanical zoom ring of claim 5,
the controllable machinery of high accuracy constant speed ring of zooming still includes solid fixed ring, the fixed ring is equipped with the inclined plane screw thread, the inside of urceolus have with inclined plane screw thread assorted thread groove, gu fixed ring with urceolus threaded connection, just gu fixed ring cover establishes the outside of inner tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110274069.3A CN113093358A (en) | 2021-03-15 | 2021-03-15 | High-precision constant-speed controllable mechanical zoom ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110274069.3A CN113093358A (en) | 2021-03-15 | 2021-03-15 | High-precision constant-speed controllable mechanical zoom ring |
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| Publication Number | Publication Date |
|---|---|
| CN113093358A true CN113093358A (en) | 2021-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110274069.3A Pending CN113093358A (en) | 2021-03-15 | 2021-03-15 | High-precision constant-speed controllable mechanical zoom ring |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204640396U (en) * | 2015-03-23 | 2015-09-16 | 佛山市顺德区新马木工机械设备有限公司 | The barrier slides locking device of wood surface planer |
| CN207856129U (en) * | 2017-12-14 | 2018-09-14 | 福建泉州市消防安全工程有限责任公司 | A kind of fire water supply equipment |
| CN209606694U (en) * | 2019-05-10 | 2019-11-08 | 佛山市德维讯智能科技有限公司 | A kind of industrial camera lens telescopic device |
| CN210428063U (en) * | 2019-10-10 | 2020-04-28 | 广东建业显示信息技术有限公司 | Zoom lens of engineering projector |
| CN211555659U (en) * | 2020-04-07 | 2020-09-22 | 中变集团上海变压器有限公司 | Lead structure fixing device of transformer |
-
2021
- 2021-03-15 CN CN202110274069.3A patent/CN113093358A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204640396U (en) * | 2015-03-23 | 2015-09-16 | 佛山市顺德区新马木工机械设备有限公司 | The barrier slides locking device of wood surface planer |
| CN207856129U (en) * | 2017-12-14 | 2018-09-14 | 福建泉州市消防安全工程有限责任公司 | A kind of fire water supply equipment |
| CN209606694U (en) * | 2019-05-10 | 2019-11-08 | 佛山市德维讯智能科技有限公司 | A kind of industrial camera lens telescopic device |
| CN210428063U (en) * | 2019-10-10 | 2020-04-28 | 广东建业显示信息技术有限公司 | Zoom lens of engineering projector |
| CN211555659U (en) * | 2020-04-07 | 2020-09-22 | 中变集团上海变压器有限公司 | Lead structure fixing device of transformer |
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Application publication date: 20210709 |