JPH11271839A - Lens cap attaching device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lens cap unit attaching device by which a lens cap unit is easily attached to/detached from a camera and the lens of the camera and the glass of a lens filter are protected at the time of non-photographing. SOLUTION: The lens cap unit 111 is provided with an insertion fitting hole 103b, and a projecting part 112a formed on the fastner 112 of the grip belt 107 of a video camera 106 is inserted and fit in the hole 103b, whereby the lens cap unit 111 is easily attached to the camera 106 at the time of photographing, and the lens of the camera 106 and the glass of the lens filter are protected at the time of non-photographing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for attaching a lens cap of a camera such as a video camera, a digital still camera or a camera for still images, which can magnetically record and reproduce video and sound.

[0002]

2. Description of the Related Art A conventional lens cap mounting apparatus will be described below with reference to the drawings. FIG. 5 is a perspective view showing the configuration of a conventional lens cap unit, FIG. 6 is a cross-sectional view showing a state in which the conventional lens cap unit is attached to a lens hood of a video camera, and FIG. FIG. 8 is a sectional view showing a state in which the lens cap unit is not attached to the lens filter of the video camera. In FIG. 5, the configuration of a conventional lens cap unit includes a lens cap 1 for protecting a lens, a pair of left and right projections 2a that fit into concaves and convexes 5a of a female thread for mounting a lens filter of a lens hood 5 shown in FIG. A pair of left and right guide holes 2b fitted into a boss 1a provided on the lens cap 1 so that the protrusion 2a can be removably moved to the left and right on the female screw unevenness 5a; Elliptical elastic part 2c to make it negative
And a cap hinge 2 integrally formed with a pair of left and right knobs 2d for moving the protrusion 2a left and right by hand.
A screw hole 3a for guiding the cap hinge 2 to the lens cap 1 from the back surface and fixing the cap hinge 2 to the boss 1a with a screw 4; and a hook which can be inserted into a grip belt 7 provided in the video camera 6 as shown in FIG. And a cap cover 3 having a portion 3b. In FIG. 6,
Reference numeral 8 denotes a lens, and 9 denotes a hood piece provided for the purpose of preventing internal reflection of the lens hood 5.

[0003]

However, in the above-mentioned conventional configuration, as shown in FIG. 8, the convex portion of the hook portion 3b of the cap cover 3 has the glass 10 of the lens filter 10.
Therefore, the projection 2a of the cap hinge 2 cannot be fitted into the female screw unevenness 10b of the lens filter 10, and the lens cap unit cannot protect the glass 10a of the lens filter 10 during non-photographing. As shown in FIG. 7, when the lens cap unit is attached to the video camera 6 so as not to interfere with the photographing, the hook 3b of the cap cover 3 is inserted into a grip belt 7 provided on the video camera 6. However, this mounting method has a problem that it is difficult to insert the hook portion 3b of the cap cover 3 into the grip belt 7.

An object of the present invention is to provide a lens cap unit attaching apparatus which can easily attach and detach a lens cap unit and can protect a lens and a lens filter of a camera. Aim.

[0005]

In order to achieve this object, a lens cap unit mounting apparatus according to the present invention is provided with a lens hood provided concentrically with a lens of a camera and a lens hood which can be mounted concentrically with the lens hood. A lens cap unit detachably attached to the lens filter and provided for the purpose of protecting the lens and the lens filter during non-photographing, and a protrusion that can be inserted into a hole of the lens cap unit provided to be fixed to the camera during photographing The lens cap unit can be fitted to the unevenness of the female thread for attaching the lens filter of the lens hood by eliminating the hook part of the conventional cap cover. , And instead of the conventional hook part, an insertion hole is provided in the cap cover on the back The inserting hole is adapted to fit to the protrusion provided on the stopper of the grip belt of the video camera.

With this configuration, a lens cap unit can be protected by a lens cap unit during non-photographing, and an easy-to-handle lens cap unit mounting device capable of easily inserting the lens cap unit into a video camera during photographing is provided. Can be.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION
A lens cap unit provided detachably to a lens hood provided concentrically with a camera lens and a lens filter attachable to the lens hood concentrically and provided for protecting the lens and the lens filter during non-shooting. And a grip belt stopper having a protruding portion that can be inserted into a hole of the lens cap unit provided so as to be fixed to the camera at the time of shooting, and a grip provided on the video camera. By inserting the hole of the lens cap unit into the projection of the stopper of the belt, it is possible to provide an easy-to-handle lens cap unit attaching device that can attach the lens cap unit to the video camera during photographing.

According to a second aspect of the present invention, there is provided a lens cap for protecting a lens, and a concave / convex portion of a female thread for mounting a lens filter of a lens hood disposed on a back surface of the lens cap and provided concentrically with the lens. The lens cap has a pair of left and right protrusions that fits into the female screw unevenness provided on the lens filter itself, and the lens cap moves to the left and right so that the protrusions are detachable from the female screw unevenness. A pair of left and right guide holes to be fitted to the provided boss, an elliptical elastic portion, and a cap hinge integrally formed with a pair of left and right knob portions capable of moving the elastic portion left and right by hand; A key having a cap hinge fixed to the lens cap from the rear surface and having a hole that can be inserted into a protrusion of a stopper of a grip belt provided on the camera. A lens cover unit having a flat shape without a protrusion such as a hook portion on the back cover, so that the lens cap unit can be a lens filter of a lens hood. The concave and convex of the female screw for attachment and the concave and convex of the female screw provided on the lens filter itself can be fitted, and the lens cap unit can protect the lens and the lens filter.

An embodiment of a lens cap unit mounting apparatus according to the present invention will be described below with reference to the drawings.

(Embodiment 1) A description will be given below with reference to FIGS. FIG. 1 is a perspective view showing a configuration of a lens cap unit according to Embodiment 1 of the present invention. FIG. 2 is a perspective view showing a method of attaching the lens cap unit to a video camera according to Embodiment 1 of the present invention. FIG. 4 is a sectional view showing a state where the lens cap unit according to the first embodiment of the present invention is mounted on a lens filter of a video camera. FIG. 4 is a view showing the lens cap unit according to the first embodiment of the present invention mounted on a stopper of the video camera. It is sectional drawing of a state. In FIG. 1, a lens cap 10
1 and the cap hinge 102 are the same as the conventional lens cap unit. The difference from the related art is that a cap cover 103 guides the same cap hinge 102 to the lens cap 101 from the back side, and a screw hole 103a that can be fixed to a boss 101a with a screw 104.
In addition, as shown in FIG. 2, the video camera 106 has an insertion hole 103b that fits into a projection 112a provided on a stopper 112 of a grip belt 107 of the video camera 106 instead of the conventional hook.

The lens cap mounting apparatus of the present invention has a structure including a lens cap unit 111 shown in FIGS. 1 and 2 and a stopper 112 for the grip belt 107 shown in FIG.

As described above, according to the present embodiment, at the time of non-photographing with the lens filter attached, there is no hook portion of the conventional cap cover, and as shown in FIG. Since the lens filter 110 can be fitted into the female screw unevenness 110b of the lens filter 110, the lens filter 110 can be fitted with a conventional lens cap unit.
The problem that the glass 110a cannot be protected can be solved, and at the time of shooting, as shown in FIG.
6, the protrusion 11 of the stopper 112 of the grip belt 107
2a, the insertion hole 103b of the cap cover 103 is
The lens cap unit 11 is inserted as shown in FIG.
1 can be easily attached to a video camera.

[0013]

As described above, according to the present invention, the lens and lens filter of the camera can be protected with a simple structure, and the lens cap unit can be easily fixed to the camera at the time of shooting, and the lens cap unit can be easily handled. An excellent effect that an apparatus can be provided is obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of a lens cap unit according to Embodiment 1 of the present invention.

FIG. 2 is a perspective view showing a method of attaching the lens cap unit to the video camera according to the first embodiment of the present invention.

FIG. 3 is a sectional view showing a state where the lens cap unit according to the first embodiment of the present invention is attached to a lens filter of a video camera.

FIG. 4 is a sectional view showing a state where the lens cap unit according to the first embodiment of the present invention is attached to a stopper of the video camera;

FIG. 5 is a perspective view showing a configuration of a conventional lens cap unit.

FIG. 6 is a sectional view showing a state in which a conventional lens cap unit is attached to a lens hood of a video camera.

FIG. 7 is a perspective view showing a method of attaching a conventional lens cap unit to a video camera.

FIG. 8 is a sectional view showing a state in which a conventional lens cap unit is not attached to a lens filter of a video camera.

[Explanation of symbols]

 Reference Signs List 101 lens cap 101a lens cap boss 102 cap hinge 102a cap hinge protrusion 102b cap hinge elastic part 103 cap cover 103a cap cover screw hole 103b cap cover insertion hole 104 screw 105 lens hood 106 video camera 107 grip belt 108 Lens 109 Food piece 110 Lens filter 110a Lens filter glass 110b Lens filter female thread unevenness 110c Lens filter glass fixing piece 111 Lens cap unit

Claims (2)

[Claims] 1. A lens hood provided at a position concentric with a lens of a camera, and a lens filter attachable to the lens hood at a position concentric with the lens hood. The lens hood is provided to protect the lens and the lens filter during non-photographing. A lens cap mounting device, comprising: a lens cap unit provided; and a grip belt stopper having a projection that can be inserted into a hole of the lens cap unit and that is provided so as to be fixed to a camera during photographing. 2. A lens cap for protecting a lens, an unevenness of a female screw for mounting a lens filter of a lens hood provided on a back surface of the lens cap and provided at a position concentric with the lens, and a female screw provided on the lens filter itself. It has a pair of left and right protrusions to fit with the unevenness of
A pair of left and right guide holes that fit into bosses provided on the lens cap so that the protrusions move left and right so that the protrusions can be detached from the concaves and convexes of the female screw; an elliptical elastic portion; A cap hinge integrally formed with a pair of left and right knobs that can be moved left and right by hand,
2. The cap cover according to claim 1, further comprising: a cap cover having the cap hinge fixed to the lens cap from a rear surface thereof, and a cap cover having a hole that can be inserted into a protrusion of a stopper of a grip belt provided on the camera. Lens cap unit.