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CN-122018223-A - Accessory with replaceable lens mount

CN122018223ACN 122018223 ACN122018223 ACN 122018223ACN-122018223-A

Abstract

The invention discloses an accessory with an interchangeable lens mount, which comprises a lens and image pickup equipment, wherein the lens comprises a male snap ring, a lens signal terminal group, a positioning pin and a limiting column, the image pickup equipment comprises a female snap ring, an image pickup equipment signal terminal group, a positioning pin clamping hole, a floating block, a release button and an elastic gap elimination structure, at least one floating claw and a plurality of fixed claws are arranged on the male snap ring, the number of the claws on the male snap ring is equal to the sum of the number of the fixed claws and the number of the floating claws, the fixed claws on the male snap ring and the floating claws are mutually buckled with the claws of the female snap ring to realize axial limiting, the floating claws are arranged between the two fixed claws and can stretch in the direction perpendicular to an axis for eliminating radial gaps and enhancing installation firmness, the lens signal terminal group is butted with the image pickup equipment signal terminal group to realize control and signal interaction, and the technical problems of large connecting gap, insufficient installation firmness, unstable signal transmission and inconvenient disassembly of the traditional interchangeable lens mount are solved.

Inventors

  • LI YUNHONG
  • YAO RONGHUA

Assignees

  • 成都威正数码科技有限公司

Dates

Publication Date
20260512
Application Date
20260403

Claims (10)

  1. 1. The utility model provides an accessory of interchangeable camera lens bayonet mount, includes camera lens and image pickup apparatus, the camera lens includes male snap ring (1), camera lens signal terminal group (2), locating pin (3), spacing post (4), image pickup apparatus includes female snap ring (5), image pickup apparatus signal terminal group (6), locating pin draw-in hole (7), slider (8), release button (9) and elasticity clearance elimination structure (10), its characterized in that, be provided with at least one floating jack catch (11) and a plurality of fixed jack catch (12) on male snap ring (1), be provided with a plurality of jack catch (13) on female snap ring (5), the jack catch (13) quantity of female snap ring (5) equals the quantity sum of fixed jack catch (12) quantity and floating jack catch (11); The floating claw (11) and the fixed claw (12) of the male clasp (1) are mutually buckled with the claw (13) of the female clasp (5), so that the axial limit of the camera shooting equipment and the camera lens is realized; The floating clamping jaw (11) is fixed on the side wall of the male clamping ring (1) and is positioned between the two fixed clamping jaws (12), the floating clamping jaw (11) can stretch and retract along the direction perpendicular to the axis of the male clamping ring (1), and the floating clamping jaw (11) can adaptively eliminate the radial gap between the lens and the camera equipment and enhance the axial installation firmness; The lens signal terminal group (2) is attached to the inner side wall of the male snap ring (1), and after the lens is installed and fixed, the lens signal terminal group (2) is communicated with the image pickup device signal terminal group (6) in a one-to-one correspondence manner, so that control instructions and signal protocols between the lens and the image pickup device are transmitted interactively.
  2. 2. The accessory of an interchangeable lens mount according to claim 1, wherein the floating claw (11) is connected with the male snap ring (1) through an elastic carrier, the elastic carrier is a compression spring (14), one end of the compression spring (14) is fixedly connected with the bottom of a mounting groove of the male snap ring (1), the other end of the compression spring is fixedly connected with the bottom of the floating claw (11), and the floating claw (11) realizes telescopic movement along the direction perpendicular to the axis of the male snap ring (1) through telescopic movement of the compression spring (14).
  3. 3. An interchangeable lens mount accessory according to claim 2, wherein the width angle of the floating claw (11) is smaller than the width angle of the adjacent two fixed claws (12), and the connecting line of one end of the floating claw (11) and the axis of the male snap ring (1) and the connecting line of the adjacent end of the adjacent fixed claw (12) and the axis of the male snap ring (1) form θ3 and θ4, and satisfies θ3+θ4<160 degrees, θ3<160 degrees, and θ4<160 degrees.
  4. 4. An interchangeable lens mount accessory according to claim 3, wherein θ3 or θ4 is cut into θ1 and θ2 by a line connecting a midpoint of an edge of the positioning pin (3) and an axis of the male snap ring (1), and satisfies θ1+θ2<90 degrees.
  5. 5. An interchangeable lens mount accessory according to claim 3, wherein the width angle of the fixed jaw (12) is a fan-shaped angle formed by a line connecting an apex of one end of the fixed jaw (12) and the axis of the male snap ring (1) and a line connecting an apex of the other end of the fixed jaw (12) and the axis of the male snap ring (1), and the width angle of the fixed jaw (12) is in a range of 30 degrees to 60 degrees.
  6. 6. The accessory of removable camera lens bayonet socket of claim 1, wherein elasticity clearance eliminating structure (10) include five elastic pieces (15), five elastic pieces (15) set up with claw (13) of female snap ring (5) one-to-one, one end and female snap ring (5) fixed connection of elastic piece (15), the other end extends towards the claw direction of male snap ring (1), after male snap ring (1) and female snap ring (5) lock, elastic piece (15) butt and the elastic deformation that takes place with corresponding claw (13).
  7. 7. An interchangeable lens mount accessory according to claim 1, wherein a wedge-shaped engagement structure (16) is provided between the release button (9) and the slider (8), the release button (9) being linearly movable in a direction parallel to the axis of the male snap ring (1), the linear movement being converted into a vertical displacement of the slider (8) by the wedge-shaped engagement structure (16), the slider (8) being adapted to jack up the positioning pin (3) and disengage it from the positioning pin engagement hole (7).
  8. 8. The accessory of the interchangeable lens mount according to claim 1, wherein an elastic reset piece is arranged between the positioning pin (3) and the male snap ring (1), the elastic reset piece is a reset spring piece (17), and the reset spring piece (17) is sleeved outside the positioning pin (3) and is used for driving the positioning pin (3) to be clamped into the positioning pin clamping hole (7).
  9. 9. The interchangeable lens mount accessory according to claim 1, wherein the lens signal terminal group (2) and the imaging device signal terminal group (6) are elastic terminals, and contact end surfaces of the lens signal terminal group and the imaging device signal terminal group are provided with wear-resistant plating layers, and the wear-resistant plating layers are gold plating layers.
  10. 10. The accessory with the replaceable lens mount according to claim 1, wherein an assembling mark is arranged on the outer side wall of the male snap ring (1), an aligning mark is correspondingly arranged on the outer side wall of the female snap ring (5), the assembling mark is aligned with the aligning mark when the lens is assembled, and the lens can be pulled out along the axial direction after the lens is disassembled and rotated until the assembling mark is aligned with the aligning mark again.

Description

Accessory with replaceable lens mount Technical Field The invention belongs to the technical field of accessories of image pickup equipment, and relates to an accessory with an interchangeable lens mount. Background The interchangeable lens camera device is widely applied to the fields of professional photography, film and television photography, industrial detection and the like by virtue of the advantage that the lens can be flexibly replaced. The bayonet connection structure between the lens and the image pickup device is a core component for ensuring stable connection and reliable signal transmission of the lens and the image pickup device, and the performance of the bayonet connection structure directly influences the imaging quality and the use experience of the image pickup device. In the prior art, the connecting structure of the interchangeable lens bayonet is mainly realized by adopting a mode of buckling a fixed claw, and the structure has the following defects that firstly, radial gaps are easy to generate between the fixed claw and the bayonet, so that shaking exists after the lens is installed, the imaging stability is influenced, the abrasion of the claw and a terminal is further increased, secondly, the claws are fixedly arranged, the matching gaps cannot be self-adaptively compensated, the installation firmness is insufficient, connection looseness is easy to occur under the scenes of vibration, movement and the like, thirdly, the butt joint precision of the signal terminal depends on the processing and assembly precision of the claws, the shaking of the gaps is easy to cause signal transmission interruption or instability, and fourthly, part of the bayonet is complex in disassembly operation, double-hand matching is needed, and the signal terminal is hard-pulled and easy to damage. At present, although the prior art attempts to alleviate the clearance problem by adding an elastic piece, most of the prior art is of a single elastic compensation structure, the movable design of the clamping jaw is not combined, radial clearance and axial shaking cannot be fundamentally eliminated, and the integrated linkage of mechanical positioning, signal connection and clearance elimination reinforcement is not formed, so that the technical effect is limited. Therefore, in order to solve the technical problems, the technical scheme of the application is provided. Disclosure of Invention The invention aims to provide a fitting with an interchangeable lens bayonet, which solves the technical problems of large connecting gap, insufficient mounting firmness, unstable signal transmission and inconvenient disassembly of the interchangeable lens bayonet in the prior art, and realizes integrated linkage of mechanical positioning, signal connection and gap elimination reinforcement through the cooperative design of a floating claw and an elastic gap elimination structure, thereby improving the connecting stability and the using convenience. The technical scheme adopted by the invention is as follows: The utility model provides an accessory of interchangeable camera lens bayonet socket, includes camera lens and image pickup apparatus, and the camera lens includes male snap ring, camera lens signal terminal group, locating pin, spacing post, and image pickup apparatus includes female snap ring, image pickup apparatus signal terminal group, locating pin card hole, slider, release button and elasticity clearance structure that disappears. The male snap ring is provided with at least one floating claw and a plurality of fixed claws, the female snap ring is provided with a plurality of claws, the number of the claws of the female snap ring is equal to the sum of the number of the fixed claws and the number of the floating claws, the claws of the female snap ring are respectively buckled with the floating claws and the fixed claws of the male snap ring, the axial limiting of the camera shooting equipment and the lens is realized, the stable axial position of the camera shooting equipment and the lens after connection is ensured, and the axial movement is avoided. The floating claw is fixed on the side wall of the male snap ring and is positioned between the two fixed claws, the floating claw can move in a telescopic mode along the direction perpendicular to the axis of the male snap ring, the core function of the floating claw is to eliminate the radial gap between the lens and the camera shooting equipment, meanwhile, the axial installation firmness is enhanced, and shaking of the lens after installation is avoided. The lens signal terminal group is attached to the inner side wall of the male snap ring, and after the lens is installed and fixed, the lens signal terminal group is communicated with the camera equipment signal terminal group in a one-to-one correspondence mode, so that control instructions and signal protocols between the lens and the camera equipment are transmitted in an interactive mode, and continuity