JPH0328411Y2 - - Google Patents

Description

[Detailed description of the invention] A. Field of industrial application The present invention relates to the shape of a non-slip surface of an operating member to which force is applied in the rotational and axial directions, such as various operating rings in a camera lens barrel. It is.

B. Prior Art The operating member is generally knurled to prevent it from slipping against the hand. Similarly, when operating a photographic device, a distance adjustment ring, an aperture setting ring, a zoom operation ring of a zoom lens, etc. are each provided with a knurl of an appropriate shape depending on the operating direction of each ring.
In other words, the operating ring that only performs rotational operations has knurling lines parallel to the axial direction, and the operating ring that only performs axial operations has parallel stripes that run in the circumferential direction. Since both rotational and axial operations are performed with rings, lattice-like knurling is used to provide a grip on the hand for operations in either direction. No. etc.).

C. Purpose The purpose of this invention is to further improve the lens operation ring as described above, so that there is no problem with operation in either the axial direction or the rotational direction, and it also has better finger tightness. The objective is to form a non-slip surface and improve the operability of the lens.

D. Configuration A plurality of convex portions each having a long side and a short side are provided on the surface of the operation ring of the lens, and all of the convex portions are inclined in both the axial direction and the circumferential direction of the lens,
By forming them in the same direction and in parallel, they have an anti-slip effect regardless of whether force is applied in the axial direction or rotational direction.

E. Embodiment FIG. 1 shows an embodiment in which the present invention is applied to an operating ring of a zoom lens. Reference numeral 1 denotes a focusing and zooming operation ring, which is formed on the inner surface and has a protrusion 2 that engages with a notch 6 of a holding cylinder 5 of the focus lens, and when the holding cylinder 5 is rotated by rotating the operating ring 1, the holding cylinder 5 is rotated. The holding cylinder is slid in the optical axis direction by the helicoid to perform focusing. In addition, a flange 3 formed inward on the inner surface of the operating ring 1 is attached to the middle cylinder 7.
By being held by the retaining ring 8, the middle cylinder 7 is coupled to the operating ring 1 in an axial direction integrally with the operating ring 1 and in a rotational direction independently from the operating ring 1. 1 in the optical axis direction, the middle tube 7
The lens group is also slid in the optical axis direction, and each lens group is slid in the optical axis direction by cams formed in the middle tube 7 and the cam tube 9, thereby performing zooming.

In the operation ring 1, 4 is a knurled portion for operation by the user, which is integrated with the operation ring 1, and has a large number of unidirectional parallel protrusions 4a inclined at 45 degrees with respect to the optical axis direction. ing. This angle of inclination is 45° in the embodiment, but a range of approximately 30° to 60° is appropriate. With this kind of knurling, the protrusions cross obliquely with respect to the operating force in the axial direction and the operating force in the rotational direction, so it provides a catch to both operations and prevents slipping. . Reference numeral 10 denotes an index ring on which indicators for settings such as focus, zoom, and aperture are carved. Reference numeral 11 denotes an aperture operation ring, which performs only rotational operation, and therefore has a knurling on its outer periphery consisting only of protrusions parallel to the optical axis.

FIG. 2 shows an example in which the present invention is applied to an interchangeable lens barrel 21. Reference numeral 18 denotes a detachable operation ring, which is arranged between the focus operation ring 12 and the aperture operation ring 13, and is integrated with a mount ring that is not visible in the figure. On the outer periphery of the attachment/detachment operation ring 18, a knurling 18a is provided which is a parallel protrusion extending in one direction and inclined with respect to the optical axis. This convex line forms an upward slope of 30° to 60° with respect to the lens optical axis when operating the attachment/detachment operation ring 18 when attaching the interchangeable lens to the camera. That is, when attaching an interchangeable lens, press the interchangeable lens barrel 21 toward the camera to fit the mount ring with the mount ring on the camera body side (described later).
Since the fitting is rotated clockwise while being further pressed to prevent the fitting from coming off, the protrusion 18a is formed so as to be substantially perpendicular to the combined direction of both operating forces. When removing the interchangeable lens, the operating force is to rotate it counterclockwise and pull it toward you, so the protrusion is oblique to the operating force. 19 is the main body of the camera,
A mount ring 14 for attaching the lens barrel 21 is provided, and the lens barrel 21 is attached to the main body 19 by engaging with the mount ring on the lens side. 15 is a positioning pin for the lens 21, and 16 is a lock release button for removing the lens 21.

When attaching the lens 21 to the main body 19, hold the interchangeable lens attachment/detachment operation ring 18, align the mount marks, push it into the main body 19, and rotate it until it is locked, completing the attachment operation. When removing the lens 21, after releasing the lock using the lock release button 16, hold the interchangeable lens attachment/detachment operation ring 18 and rotate it until the mounting reference points coincide with each other, and then pull it out.

Figures 3A, B, and C show cross-sectional examples of the knurled protrusions in each of the above-mentioned embodiments, and it is generally preferable that the width of the convex part of the protrusion be equal to or slightly narrower than the width of the concave part. It is.

Note that if the direction of the streaks is changed for each operation, taking into consideration the direction of the operation, as in the embodiment shown in Fig. 2,
The knurling pattern of each operating ring can be identified by the touch of the finger without visually checking each operating ring. In such cases, the method of forming the knurling is to create the direction of the knurling lines arbitrarily depending on the direction in which the adhesive strip is cut from a sheet on which parallel ridges have been formed in advance, and then adhere it. good.

In addition, in the embodiment shown in Fig. 2, if you want to further arrange characters and symbols such as a depth of field scale on the lens barrel, you can remove part of the knurled protrusion of the detachable operation ring and add the characters and symbols. It's fine if you do. In addition, when using the pasting method of attaching a sheet as described above in the present invention, if the knurled protrusions do not surround the entire circumference of the lens barrel, but there is a part without the knurled protrusions, It is possible to omit positioning of the protrusions at the joints of the sheets. This part without knurling can be used as a space for attaching scales, characters, symbols, etc.

The present invention is applicable not only to interchangeable lenses but also to camera accessories such as a rear converter intermediate ring, and to any device that performs push/pull operations and rotation operations.

F. Effect In the lens of this invention, a plurality of convex portions each having a long side and a short side are provided on the surface of the operating ring, and all of these convex portions are inclined in both the axial direction and the circumferential direction of the lens. Since the knurlings are formed in the same direction and in parallel, compared to a grid-like knurling,
In addition to good adhesion of fingers to the knurling,
The protrusion crosses obliquely with respect to the operating force in the axial direction and the operating force in the rotational direction, so there is no risk of slipping even when the operator operates in either direction.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view of a zoom lens barrel according to an embodiment of the present invention, Fig. 2 is a perspective view of an interchangeable lens according to another embodiment of the present invention, and Fig. 3 is a knurling according to the present invention. FIG. 1... Operating ring, 4... Knurled portion, 4a...
...Protrusion, 11...Aperture operation ring, 18...Detachable operation ring.

Claims (1)

[Claims for Utility Model Registration] (1) The operation ring has a plurality of concave and convex portions each having a long side and a short side. A lens having an operation ring formed with a non-slip mechanism, characterized in that the operation ring is arranged in the same direction and parallel to each other while being inclined in both the direction and the circumferential direction. (2) A lens having a non-slip operating ring as set forth in claim 1, wherein the operating ring is movable in the optical axis direction with respect to the lens barrel body. (3) The anti-slip device according to claim 1 of the utility model registration claim, wherein the operating ring does not move in the optical axis direction with respect to the lens barrel body, and the operating force in the optical axis direction is applied to the entire lens barrel. A lens with a formed operating ring. (4) A lens having an operating ring formed with a non-slip member as claimed in claim 1 of the utility model registration, wherein the operating ring is movable in the circumferential direction with respect to the lens barrel body. (5) The operating ring does not move in the circumferential direction relative to the lens barrel body.
A lens having a non-slip operating ring according to claim 1, wherein a circumferential operating force is applied to the entire lens barrel. (6) The utility model registered in claim 1, characterized in that the width of the short side of the convex portion formed on the operating ring of the lens is shorter than the width between adjacent convex portions. A lens with a non-slip operating ring. (7) The anti-slip device according to claim 1 of the utility model registration claim is formed, in which the convex portion formed on the operating ring of the lens has an inclination angle of 30° to 60° with respect to the axial direction of the lens. A lens with an operating ring.