JPH10268384A - Barrier device for camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable opening/closing a barrier and selecting plural photographing modes with an easy operation. SOLUTION: The device is provided with an operating member 1 having an annular projecting part 1a partly notched on the rear side and also capable of selecting plural photographing modes, a rotatably supported lever member 2 equipped with a cam part 2b coming into contact with the annular projecting part 1a, a barrier member 3 equipped with a shaft 3a which is engaged with an oblong hole 2c formed in the leading end of the lever member 2 and also for opening/closing the opening part 10a of a front cover for the camera, and a guide groove 4 which is formed on a base member and also which is engaged with the shaft 3a and which is prepared for guiding the barrier member 3 so that the member 3 may go straight ahead, and when the operating member 1 stands at the position of a mode 1, the lever member 2 descends into the notched part of the annular projecting part 1a, then, the opening part 10a is closed by the barrier member 3, but, when the operating member 1 is rotated clockwise, the cam part 2b comes into contact with the annular projecting part 1a, then, the barrier member 3 is opened, when the operating member 1 is still more rotated, the other photographing mode is selected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera barrier device.

[0002]

2. Description of the Related Art Conventionally, a barrier device for a camera has been disclosed in Japanese Utility Model Application No.
As described in JP-A-125227, the operation lever and the operation plate are rotated by sliding the operation member on the front surface of the front cover, and the barrier engaged with the operation plate is opened and closed. . Further, as described in Japanese Utility Model Laid-Open No. 55-118222, a finder protection plate and a photographic lens plate are provided, and the finder protection plate is slid to cover the finder and simultaneously cover the photographic lens. There is something. Also, Japanese Patent Application Laid-Open No. 2-19843
As described in Japanese Patent Laid-Open Publication No. 6-206, there is known a configuration in which an operation member for switching a photographing mode is incorporated from the outside of a camera cover.

[0003]

By the way, in the above-mentioned conventional example, the barrier opening / closing mechanism is driven by sliding the operating member on the front surface of the cover. Could not be selected. Therefore, when selecting another shooting mode, it is necessary to provide an operating member other than the operating member, and the photographer must operate a plurality of operating members, which makes the shooting operation complicated. Was. further,
Since other members are required, the cost is increased. Further, a plurality of photographing modes are selected by the operation member, but the barrier cannot be opened and closed.

[0004] In view of the above-mentioned problems of the conventional example, the present invention simplifies the operation of the camera by enabling the opening and closing of the barrier and the selection of a plurality of other shooting modes with a single operation member provided on the front of the camera. It is an object to provide a camera barrier device.

[0005]

In order to achieve the above-mentioned object, the present invention provides a method of rotating a barrier member by rotating a lever member by rotating an operation member capable of selecting a plurality of photographing modes. Open and close the opening of the front cover,
In addition, another photographing mode is selected.

[0006]

According to a first aspect of the present invention, there is provided an operation member capable of selecting a plurality of photographing modes, a lever member having a cam portion with which the operation member abuts and being rotatably supported by a shaft.
A slidable barrier member for covering an opening in the front of the camera; and a base member having a guide groove for guiding the movement of the barrier member. Is opened and closed, it becomes possible to open and close the barrier member and select a plurality of other shooting modes with one operating member, and the shooting operation can be simplified. According to the second aspect of the present invention, the operating member has a contact piece member integrally contacting the pattern of the substrate for selecting the photographing mode. Multiple shooting modes can be easily selected.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a front view of a camera provided with a barrier mechanism of the present embodiment, FIG. 2 is a configuration diagram of a barrier mechanism in a closed state, FIG. 3 is a configuration diagram of an open state, and FIG. FIG. 5 and FIG. 5 are exploded perspective views of the operation member. In the drawing, reference numeral 1 denotes an operation member for mode switching, which is rotatably attached to a front cover 10 of the camera, and has an annular projection 1a and a rotation shaft 1b which are partially notched on the inner surface side thereof. The surface has an index 1c.
Reference numeral 2 denotes a lever member, which is rotatably supported around a shaft hole 2a provided at one end thereof, and an annular projection 1a of the operation member 1.
A cam portion 2b for abutting on the shaft hole 2a is provided near the shaft hole 2a, and an elongate hole portion 2c is provided at the other end.

Reference numeral 3 denotes a barrier member, which is a front cover 10 of the camera.
A shaft 3a that covers the opening 10a of the lever member 2 and engages with the elongated hole 2c of the lever member 2. Reference numeral 4 denotes a guide groove, which is provided on a base member (not shown) attached to the front cover 10 and guides the shaft 3a of the barrier member 3 so as to be able to move straight in the vertical direction. A spring member 5 biases the lever member 2 to rotate clockwise in the drawing.

Reference numeral 6 denotes an elastic member disposed between the front cover 10 and the operation member 1. Reference numeral 7 denotes a contact member which is screwed to the back side of the operation member 1 with the front cover 10 interposed therebetween.
It has a plurality of contact pieces 7a. Reference numeral 8 denotes a pressing member for pressing the contact piece member 7. A substrate 9 is screwed to a body base member (not shown), and has a pattern corresponding to a plurality of contact pieces 7a of the contact piece member 7.

In this embodiment having the above-described configuration, when the operating member 1 is in the OFF position of the barrier closing mode 1 in FIG. 1, the cam portion 2b of the lever member 2 falls into the notch of the annular projection 1a. When the rotation operation is performed clockwise from the position to the ON position of the barrier opening of the mode 2, the annular protrusion 1a rotates while pressing the cam portion 2b of the lever member 2, so that
The lever member 2 rotates counterclockwise around the rotation shaft hole 2a from the state shown in FIG. 2 against the urging force of the spring member 5 to be in the state shown in FIG. At this time, the barrier member 3 is
Is moved downward by being guided by the guide groove 4, and is retracted from the state where the opening 10a of the front cover 10 is closed to the open position.

When the operating member 1 is further rotated clockwise from this state, as shown in FIG. 4, the cam portion 2b of the lever member 2 remains in contact with the annular projection 1a of the operating member 1, and Can be selected. At this time, the contact member 7 rotates together with the operation member 1, and can be switched to each of the modes 3, 4 and 5 by a combination of the contact portion 7 a of the contact member 7 and the pattern of the substrate 9.

[0012]

As described above, according to the first aspect of the present invention, there is provided an operating member capable of selecting a plurality of photographing modes, and a lever rotatably supported rotatably having a cam portion with which the operating member abuts. A member, a slidable barrier member for covering an opening in the front of the camera, and a base member having a guide groove for guiding the movement of the barrier member. The lever member is rotated by rotating the operation member. By opening and closing the barrier member, it is possible to open and close the barrier member and select a plurality of other shooting modes with a single operation member, thereby improving shooting operability. According to a second aspect of the present invention, the operation member has a contact piece member integrally in contact with a pattern of a substrate for selecting a photographing mode. The photographing mode can be easily and reliably selected.

[Brief description of the drawings]

FIG. 1 is a front view of a camera having a barrier mechanism according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of the barrier mechanism in a barrier closed state.

FIG. 3 is a configuration diagram of a barrier open state.

FIG. 4 is a block diagram of another shooting mode selection state.

FIG. 5 is an exploded perspective view of an operation member serving as a mode selection unit.

[Explanation of symbols]

1. Operation member, 1a .. annular projection, 2 .. lever member, 2b .. cam member 3 .. barrier member, 3a .. shaft, 4.
..Guide grooves, 5..Spring members, 6..Contact members, 7.
-Holding member, 9-Board, 10-Front cover of camera, 10a-Opening.

Claims (2)

[Claims] An operating member capable of selecting a plurality of photographing modes, a lever member rotatably supported by a rotatable cam having a contact with the operating member, and a slidable barrier covering an opening in the front of the camera. And a base member having a guide groove for guiding the movement of the barrier member, wherein the lever member is rotated by rotating the operation member to open and close the barrier member. apparatus. 2. The barrier device for a camera according to claim 1, wherein the operation member integrally has a contact piece member that comes into contact with a pattern of a substrate for selecting a photographing mode.