CN211206915U

CN211206915U - Mechanism suitable for mechanical respiration is eliminated to camera lens

Info

Publication number: CN211206915U
Application number: CN201922465411.9U
Authority: CN
Inventors: 李成; 王杰; 郭楠
Original assignee: Chengdu Yunying Fangtang Technology Co ltd
Current assignee: Chengdu Yunying Fangtang Technology Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-08-07
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a mechanism suitable for eliminating mechanical respiration of a camera lens, which comprises a front cover, a shell, a focusing ring, an internal thread ring, an external thread ring and a support frame, when the focusing ring is rotated to adjust the camera lens, the focusing ring is rotated, the internal thread ring rotates along with the focusing ring, the external thread ring slides along the central axis of the shell under the arrangement of the first thread, the second thread, the support frame anti-rotation hole and the anti-rotation pin, thereby driving the support frame to slide and further realizing the axial extension and contraction of the lens core, and the sliding of the support frame (namely the lens core) is always positioned in the shell in the focusing process, and then focus the axial position of ring and front shroud and keep invariable all the time, and then eliminated the mechanical respiration when the camera lens focuses, solved because the camera lens has the inconvenient condition of mechanical respiration shading fill for the camera lens adapts to photographer's operation custom more.

Description

Mechanism suitable for mechanical respiration is eliminated to camera lens

Technical Field

The utility model relates to a mechanism of focusing suitable for camera lens especially relates to a mechanism suitable for camera lens eliminates mechanical respiration.

Background

The camera lens is the most important component in the camera because its quality directly affects the quality of the captured image. The lens mainly comprises zooming and fixed focus, and a doubling mirror. The zoom lens is a lens that can be pushed or pulled. In addition, there is a fixed focus lens, which is that the focal length cannot be changed to only one focal length, or only one viewing angle.

The two lenses have obvious difference in the appearance, the fixed focus lens only has a focusing ring, and the zoom lens has two rings, namely a focusing ring (for controlling definition) and a zooming ring (for controlling the visual angle, namely pushing and pulling).

Because the traditional camera lens can generate mechanical respiration in the focusing process, the mechanical respiration is that the lens can stretch along with the rotation of the focusing ring when the focusing ring is rotated to adjust the focal length, the axial length of the lens changes, the mechanical stretching is the mechanical respiration, a light blocking and absorbing light shielding hopper is required to be installed at the end part of the lens in the shooting process, the lens halo is reduced by controlling the light entering the lens, the angular position of the light shielding hopper is generally fixed according to the shooting requirement, if the lens needs to be focused again in the shooting process and the camera lens has the mechanical respiration, the light shielding hopper needs to be manually disassembled and the light shielding hopper needs to be readjusted to the original position at this time, so that the operation of a photographer is complicated, and the photographing requirement of the photographer can not be well adapted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mechanism suitable for camera lens eliminates mechanical respiration to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a mechanism suitable for eliminating mechanical respiration of a camera lens is characterized by comprising a front cover, a shell, a focusing ring, an internal thread ring, an external thread ring and a support frame, the end part of the shell is provided with a front cover, the outer part of the shell is sequentially provided with an external thread ring, an internal thread ring and a focusing ring from inside to outside, the focusing ring is fixedly connected with the internal thread ring, the internal thread ring is rotatably connected with the outer wall of the shell, the inner wall of the external thread ring is slidably connected with the shell, the outer wall of the external thread ring is provided with a first thread, the inner wall of the internal thread ring is provided with a second thread, the first thread is matched with the second thread, the inner wall of the shell is slidably connected with a support frame, the support frame is fixedly connected with the external thread ring, a support frame rotation preventing hole is formed in the support frame, a rotation preventing pin is installed in the rotation preventing hole of the support frame, and a rotation preventing matching hole matched with the rotation preventing hole of the support frame is further.

The front cover is provided with a plurality of first front cover mounting holes, the shell is provided with a plurality of second front cover mounting holes, and the first front cover mounting holes and the second front cover mounting holes are arranged in a one-to-one correspondence mode.

The focusing ring is provided with a plurality of first internal thread ring fixing holes, the internal thread ring is provided with a plurality of second internal thread ring fixing holes, and the first internal thread ring fixing holes and the second internal thread ring fixing holes are in one-to-one correspondence.

The external thread ring is provided with a first supporting frame fixing hole, the supporting frame is provided with a plurality of second supporting frame fixing holes, and the first supporting frame fixing hole and the second supporting frame fixing holes are arranged in a one-to-one correspondence mode.

The utility model has the advantages that:

when the camera lens is adjusted by rotating the focusing ring, the focusing ring is rotated, the internal thread ring rotates along with the rotation of the focusing ring, the external thread ring slides along the central axis of the shell under the arrangement of the first thread, the second thread, the support frame rotation-preventing hole and the rotation-preventing pin, so that the support frame is driven to slide, the axis of the lens core is stretched and contracted, the support frame slides (namely the lens core) in the focusing process and is always positioned in the shell, the axial positions of the focusing ring and the front cover are always kept unchanged, the mechanical respiration during zooming of the camera lens is eliminated, the problem that the camera lens is inconvenient to use due to the fact that the camera lens has a mechanical respiration shading hopper is solved, and the camera lens is enabled to be more suitable for the operation habit of a photographer.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the structure of the present invention;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2 according to the present invention;

fig. 4 is a schematic structural view of the housing of the present invention;

FIG. 5 is a schematic structural view of a focusing ring according to the present invention;

fig. 6 is a schematic structural view of the internal thread ring of the present invention;

fig. 7 is a schematic structural view of the external and internal threaded ring of the present invention;

fig. 8 is a schematic structural view of the support frame of the present invention.

In the figure, a front cover 1, a first front cover mounting hole 1.1, a shell 2, a second front cover mounting hole 2.2, an anti-rotation matching hole 2.3, a focusing ring 3, a first internal thread ring fixing hole 3.1, an internal thread ring 4, a second internal thread ring fixing hole 4.2, an external thread ring 5, a first support fixing hole 5.1, a support 6, a second support fixing hole 6.2 and a support anti-rotation hole 6.3 are arranged.

Detailed Description

The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.

Referring to fig. 1 to 8, an embodiment of the present invention provides a mechanism for eliminating mechanical respiration of a camera lens, including a front cover 1, a housing 2, a focusing ring 3, an internal thread ring 4, an external thread ring 5 and a support frame 6, wherein the front cover 1 is installed at an end portion of the housing 2, a plurality of first front cover installation holes 1.1 are provided on the front cover 1, a plurality of second front cover installation holes 2.2 are provided on the housing 2, the first front cover installation holes 1.1 and the second front cover installation holes 2.2 are arranged in a one-to-one correspondence manner, and are inserted into the first front cover installation holes 1.1 and the second front cover installation holes 2.2 through screws during an assembling process to be fixedly installed (refer to fig. 1, 3 and 4), and a light shielding bucket for blocking and absorbing light during a photographing process is installed outside the front cover 1.

The outer part of the shell 2 is sequentially provided with an external thread ring 5, an internal thread ring 4 and a focusing ring 3 from inside to outside.

The focusing ring 3 is fixedly connected with the internal thread ring 4, a plurality of first internal thread ring fixing holes 3.1 are formed in the focusing ring 3, a plurality of second internal thread ring fixing holes 4.2 are formed in the internal thread ring 4, the first internal thread ring fixing holes 3.1 and the second internal thread ring fixing holes 4.2 correspond to each other one by one, and the first internal thread ring fixing holes 3.1 and the second internal thread ring fixing holes 4.2 are inserted into the screws in the assembling process to be fixedly installed (refer to fig. 3, 5 and 6).

Internal thread ring 4 rotates with 2 outer walls of casing to be connected, has the clearance between casing 2 and the internal thread ring 4, and external thread ring 5 can be in the reciprocal slip in the clearance, 5 inner walls of external thread ring and 2 sliding connection of casing, 5 outer walls of external thread ring are provided with first screw thread, and 4 inner walls of internal thread ring are provided with the second screw thread, and first screw thread and second screw thread match the setting.

The inner wall of the shell 2 is connected with a support frame 6 in a sliding mode, the support frame 6 is fixedly connected with an external thread ring 5, a first support frame fixing hole 5.1 is formed in the external thread ring 5, a plurality of second support frame fixing holes 6.2 are formed in the support frame 6, the first support frame fixing holes 5.1 and the second support frame fixing holes 6.2 are arranged in a one-to-one correspondence mode, and in the assembling process, screws are inserted into the first support frame fixing holes 5.1 and the second support frame fixing holes 6.2 to be fixedly installed (refer to fig. 3, 7 and 8).

The outer wall of the support frame 6 is provided with a support frame anti-rotation hole 6.3 (refer to fig. 8), an anti-rotation pin is arranged in the support frame anti-rotation hole 6.3, and the side wall of the shell 2 is also provided with an anti-rotation matching hole 2.3 (refer to fig. 4) matched with the side wall.

When the focusing ring 3 is rotated to adjust the camera lens, the focusing ring 3 is rotated, the internal thread ring 4 rotates along with the rotation, the external thread ring 5 slides along the central axis of the shell 2 under the arrangement of the first thread, the second thread, the support frame anti-rotation hole 6.3 and the anti-rotation pin, so as to drive the support frame 6 to slide (the arrangement of the anti-rotation pin enables the support frame 6 not to rotate but only to slide), the lens core of the camera lens is arranged in the support frame 6, so that the axial extension of the lens core is realized, the lens focusing function is realized, the sliding of the support frame 6 (namely the lens core) is always positioned in the shell 2 in the focusing process, the axial positions of the focusing ring 3 and the front cover 1 are always kept unchanged, and the mechanical respiration during the focusing of the camera lens is eliminated.

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. The mechanism is characterized by comprising a front cover (1), a shell (2), a focusing ring (3), an internal thread ring (4), an external thread ring (5) and a support frame (6), wherein the front cover (1) is installed at the end part of the shell (2), the external thread ring (5), the internal thread ring (4) and the focusing ring (3) are sequentially arranged outside the shell (2) from inside to outside, the focusing ring (3) is fixedly connected with the internal thread ring (4), the internal thread ring (4) is rotatably connected with the outer wall of the shell (2), the inner wall of the external thread ring (5) is slidably connected with the shell (2), the outer wall of the external thread ring (5) is provided with a first thread, the inner wall of the internal thread ring (4) is provided with a second thread, the first thread is matched with the second thread, the inner wall of the shell (2) is slidably connected with the support frame (6), and the support frame (6) is fixedly connected with the external thread ring (5, the support frame (6) is provided with a support frame anti-rotation hole (6.3), an anti-rotation pin is installed in the support frame anti-rotation hole (6.3), and an anti-rotation matching hole (2.3) matched with the support frame anti-rotation hole (6.3) is further communicated on the side wall of the shell (2).

2. The mechanism for eliminating mechanical respiration of a camera lens according to claim 1, wherein a plurality of first front cover mounting holes (1.1) are formed in the front cover (1), a plurality of second front cover mounting holes (2.2) are formed in the housing (2), and the first front cover mounting holes (1.1) and the second front cover mounting holes (2.2) are arranged in a one-to-one correspondence manner.

3. The mechanism for eliminating mechanical respiration of a camera lens according to claim 1, wherein a plurality of first internally threaded ring fixing holes (3.1) are formed in the focus ring (3), a plurality of second internally threaded ring fixing holes (4.2) are formed in the internally threaded ring (4), and the first internally threaded ring fixing holes (3.1) and the second internally threaded ring fixing holes (4.2) are arranged in a one-to-one correspondence manner.

4. The mechanism for eliminating mechanical respiration of a camera lens according to claim 1, wherein the externally threaded ring (5) is provided with a first holder fixing hole (5.1), the holder (6) is provided with a plurality of second holder fixing holes (6.2), and the first holder fixing holes (5.1) and the second holder fixing holes (6.2) are arranged in a one-to-one correspondence manner.