Adapter ring suitable for installation of M42 screw lens

Abstract

The utility model discloses an adapter ring suitable for mounting an M42 screw lens, which comprises a mounting seat, an M42 screw ring is arranged on one side of the mounting seat, a camera bayonet is arranged on the other side of the mounting seat, a sliding baffle is further arranged between the M42 screw ring and the mounting seat, a stop block is arranged on the sliding baffle, and the sliding baffle is used for propping against an aperture thimble on the M42 screw lens. And the rotation of the M42 screw lens enables the aperture ejector pin to be matched with the stop block to drive the sliding baffle to rotate along the mounting seat, and the sliding baffle is far away from an aperture driving lever on the M42 screw lens. The adapter ring structure is simple in structure and small in size, and through the design of the sliding baffle, when the lens is installed, the sliding baffle is matched with the check block and the aperture ejector pin to rotate along with the M42 screw lens, so that the sliding baffle can abut against the aperture ejector pin of the lens, interference of an aperture shifting rod can be avoided, and the lens can be installed conveniently. The adapter ring can be suitable for M42 screw lenses without an aperture driving lever or with an aperture driving lever, the application range and the use effectiveness of the adapter ring are improved, and the adapter ring is convenient to install.

Description

Technical Field

[0001] The utility model relates to the technical field of camera auxiliary devices, in particular to an adapter ring suitable for installing an M42 screw-mouth lens. Background Art

[0002] At present, M42 screw-mount lens is also one of the lenses frequently used by photography enthusiasts. Ordinary M42 screw-mount lens is only equipped with an aperture pin. Therefore, the adapter ring suitable for it is generally equipped with an M42 bayonet lens baffle, that is, a ring baffle, which is used to hold the aperture pin. Figure 4 shown.

[0003] However, some M42 screw-mount lenses have an aperture lever on the lens to achieve the linked metering function. Since the aperture lever is a protruding setting and is very close to the aperture pin in the diameter direction, the annular baffle of the above-mentioned adapter ring design will block the aperture lever, thereby interfering with the installation of the M42 screw-mount lens.

[0004] On the contrary, some M42 screw-mount lenses do not have an aperture ejector pin baffle. This design causes the lens to be unable to adjust the aperture because it does not support the aperture ejector pin of the lens. Utility Model Content

[0005] The utility model aims to provide an adapter ring suitable for installing an M42 screw-mount lens. Through the design of a sliding baffle, the adapter ring can not only realize that the sliding baffle supports the aperture pin of the lens, but also avoid the interference of the aperture lever, so that the adapter ring is suitable for both a traditional M42 screw-mount lens without an aperture lever and an M42 screw-mount lens with an aperture lever, thereby improving the application range of the adapter ring and improving its use effectiveness.

[0006] In order to solve the above technical problems, the utility model is implemented through the following technical solutions:

[0007] An adapter ring suitable for installing an M42 screw-mount lens comprises a mounting seat, an M42 screw-mount ring is arranged on one side of the mounting seat, and a camera bayonet is arranged on the other side, a sliding baffle is further arranged between the M42 screw-mount ring and the mounting seat, a block is arranged on the sliding baffle, the sliding baffle is used to support an aperture ejector pin on the M42 screw-mount lens, and the rotation of the M42 screw-mount lens causes the aperture ejector pin to cooperate with the block to drive the sliding baffle to rotate along the mounting seat, and the sliding baffle is away from the aperture lever on the M42 screw-mount lens.

[0008] Preferably, the sliding baffle comprises an arcuate surface and a concave-convex surface, a circle of sliding grooves is arranged inside the mounting seat, and the arcuate surface of the sliding baffle slides along the inner wall of the sliding groove.

[0009] Preferably, a circle of limiting grooves is arranged on the above-mentioned slide groove, a limiting hole is arranged on the sliding baffle, and a limiting member is arranged between the limiting hole and the limiting groove.

[0010] Preferably, the limiting member is a ball.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the adapter ring structure of the utility model is simple in structure and compact in size. Through the design of the sliding baffle, when the lens is installed, the sliding baffle cooperates with the block and the aperture ejector pin to rotate together with the M42 screw-mount lens, so that not only the sliding baffle can support the aperture ejector pin of the lens, but also the interference of the aperture lever can be avoided, so that the adapter ring can be applicable to M42 screw-mount lenses with and without an aperture lever, thereby improving the application range and use effectiveness of the adapter ring and facilitating installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the split structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of the sliding baffle in the utility model;

[0014] Figure 3 It is a structural schematic diagram of an M42 screw-mount lens with an aperture lever installed in the utility model;

[0015] Figure 4 Schematic diagram of the structure for installing an M42 screw-mount lens on an adapter ring with a ring-shaped M42 bayonet lens baffle.

[0016] In the figure: 1-mounting seat; 2-M42 screw ring; 3-M42 screw lens; 4-camera mount; 5-aperture ejector pin; 6-sliding baffle; 7-block; 8-aperture lever; 9-ball bearing; 10-M42 bayonet lens baffle; 101-slide groove; 102-limiting groove; 601-arc surface; 602-concave and convex surface; 603-limiting hole. DETAILED DESCRIPTION

[0017] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0018] like Figure 1-3As shown, an adapter ring suitable for installing an M42 screw-mount lens comprises a mounting seat 1, an M42 screw-mount ring 2 is arranged on one side of the mounting seat 1, and a camera bayonet 4 is arranged on the other side. A sliding baffle 6 is also arranged between the M42 screw-mount ring 2 and the mounting seat 1, and a block 7 is arranged on the sliding baffle 6. The sliding baffle 6 is used to support the aperture ejector pin 5 on the M42 screw-mount lens 3, and the rotation of the M42 screw-mount lens 3 will make the aperture ejector pin 5 cooperate with the block 7 to drive the sliding baffle 6 to rotate along the mounting seat 1, and the sliding baffle 6 is away from the aperture lever 8 on the M42 screw-mount lens 3. A threaded connection is achieved between the M42 screw-mount lens 3 and the M42 screw-mount ring 2, which is easy to process, easy to install and has a stable connection.

[0019] The adapter ring structure of the utility model is simple in structure and compact in size. Through the design of the sliding baffle 6, when the lens is installed, the aperture ejector pin 5 on the lens will hit the block 7, and the aperture ejector pin 5 drives the sliding baffle 6 to rotate with the lens. As the lens rotates inward, the aperture ejector pin 5 will then hit the sliding baffle 6 until the lens is installed in place and the sliding baffle 6 completely supports the aperture ejector pin.

[0020] Furthermore, the sliding baffle 6 includes a curved surface 601 and a concave-convex surface 602. A circle of slide grooves 101 are provided inside the mounting seat 1. The curved surface 601 of the sliding baffle 6 slides along the inner wall of the slide groove 101. With the above design, the sliding baffle 6 is small in size and can avoid interference with the aperture lever 8. It is also easy to process and install. The matching design of the curved surface 601 and the slide groove 101 can make the sliding baffle 6 rotate along the inner wall of the mounting seat 1 more stably.

[0021] Furthermore, a circle of limiting grooves 102 is provided on the slide groove 101, a limiting hole 603 is provided on the sliding baffle 6, and a limiting member is provided between the limiting hole 603 and the limiting groove 102, and the limiting member can be a ball 9. The above design can prevent the sliding baffle 6 from running off during the rotation process, thereby improving its rotation stability, and the ball 9 is easy to obtain, and the limiting effect is better and more stable.

[0022] The above are only preferred embodiments of the present invention, and do not limit the implementation mode and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. An adapter ring suitable for mounting an M42 screw-mount lens, characterized by: The invention comprises a mounting seat, one side of which is provided with an M42 screw-on ring, the other side of which is provided with a camera bayonet, a sliding baffle is further provided between the M42 screw-on ring and the mounting seat, a block is provided on the sliding baffle, the sliding baffle is used to support the aperture ejector pin on the M42 screw-on lens, and the rotation of the M42 screw-on lens causes the aperture ejector pin to cooperate with the block to drive the sliding baffle to rotate along the mounting seat, and the sliding baffle is away from the aperture lever on the M42 screw-on lens.

2. The adapter ring for mounting an M42 screw-mount lens according to claim 1, characterized in that: The sliding baffle comprises an arcuate surface and a concave-convex surface. A circle of sliding grooves is arranged inside the mounting seat. The arcuate surface of the sliding baffle slides along the inner wall of the sliding groove.

3. The adapter ring for mounting an M42 screw-mount lens according to claim 2, characterized in that: The slide groove is provided with a circle of limiting grooves, the sliding baffle is provided with limiting holes, and a limiting member is provided between the limiting holes and the limiting grooves.

4. The adapter ring for mounting an M42 screw-mount lens according to claim 3, characterized in that: The limiting member is a ball.

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