JP2011164417A5 - - Google Patents

Claims (3)

In the barrier opening and closing device of the taking lens,
Lens barrier means that opens and closes to a closed position that covers the front surface of the photographing lens and an open position that is exposed;
An electric drive source for opening and closing the lens barrier means;
Displacement means for opening and closing the lens barrier means by displacing in response to the driving force from the electric drive source;
Switch means for monitoring the open / close position of the lens barrier means;
Elastic means interposed between the lens barrier means and the displacement means while being preliminarily accumulated to move and displace the lens barrier means and the displacement means integrally, and the lens barrier means in the closing direction. When the electric drive source is driven to move and the displacement means is displaced in the closing direction, the lens barrier means is pressed in the closing direction, and there is an obstacle on the movement locus between the open position and the closed position of the lens barrier means. When the object is present and the movement of the lens barrier means in the closing direction is inhibited, the lens barrier means and the displacement means are allowed to move relative to each other while being closed and stored,
When the electric drive source is driven to move the lens barrier means in the opening direction and the displacement means is displaced in the opening direction, the lens barrier means is pressed in the opening direction, and the lens barrier means is opened and closed. When there is an obstacle on the movement trajectory with respect to the position and the movement of the lens barrier means in the opening direction is inhibited, the lens barrier means and the displacement means are moved relative to each other while being opened and accumulated. Elastic means to allow;
The lens barrier means is driven from the open position to the closing direction or from the closed position to the opening direction, and when the relative movement at the time of closing or the relative movement at the time of opening / closing occurs, the switch means detects the inhibition state, and Drive the lens barrier means in the opening direction or the closing direction,
Control means for moving and driving the lens barrier means in the opening direction or the closing direction by the driving force of the electric drive source, the force by the preliminary accumulation of the elastic means and the force by the additional accumulation;
A barrier opening / closing device for a photographic lens, comprising: 2. The photographing lens barrier opening and closing device according to claim 1, wherein the elastic means is provided on one of the lens barrier means and the displacement means. Barrier switchgear of the photographing lens according to either of claims 1 or claim 2, characterized in that it is connected by a gear train between the electric driving source and the displacement means.