JPH0453628Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] This invention covers the release button, selfie button, etc. of a camera when carrying it, and covers the entrances and exits of the battery compartment, film compartment, operation buttons of other devices, and the entrances and exits of the storage room. The present invention relates to an opening/closing device for a shielding member.

[Prior art]

Conventionally, as disclosed in Utility Model Application No. 58-149732, a plate-like cover that can be opened and closed is provided locally on the release button, and the plate-like cover is prevented from sliding inadvertently. Since the fitting portion between the shaped cover and the camera body is provided with a click mechanism or frictional resistance, if the cover is not completely opened manually, the shutter release will be missed, making operability difficult. Furthermore, even when this mechanism is applied to other devices, the operating feel is poor due to the click mechanism or frictional resistance.

[Purpose of the application]

The present application has been made in view of the above-mentioned circumstances, and aims to provide an opening/closing device for a shielding member that has a simple configuration, does not impair operability, and has a good operating feel.

[Features of the present application]

The feature of the present invention is that after the slidable blocking member, which is normally biased to one side by an elastic member, is activated against the biasing force, the stored force of the elastic member accumulated by this activation is activated. Accordingly, the opening and closing of the shielding member is automatically completed.

[Structure of the present application]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 5 show the structure of an embodiment of the present invention.

In the figure, a shielding member 2 is attached to the top surface of the camera body 1.
is provided so that when the knurled portion 2a is pressed in the direction of the arrow, the shielding member 2 can slide until the left end of the shielding member comes into contact with the end 3a of the viewfinder cover 3. The shielding member 2 is configured to fit into the upper surface opening 3b of the viewfinder cover 3 by means of an outer wall 2b and a stepped portion 2c, and to be slidable therein. On the inside of the outer wall 2b of the shielding member 2, a rack portion 2d is formed in the longitudinal direction of the shielding member 2 in correspondence with the stepped portion 2c.

Gears 4 and 5 that mesh with each other are pivotally supported on the camera body 1 and mesh with a rack portion 2d of the shielding member 2. The pins 4a, 5a implanted in the gears 4, 5 have one ends 6a, 6 of an elastic member 6 made of an elastic wire.
b is fitted and locked.

When the shielding member 2 is opened, the convex portion 1 of the camera body 1
A release button 7 and a selfie button 8 are arranged with a as a boundary.

The release button 7 is configured to be movable up and down, and by pressing the release button 7, the shutter opens and closes, and eventually the film winding is completed and the camera enters the next shooting standby state.

The self-release button 8 is configured to be slidable in a front-rear direction that is perpendicular to both the opening/closing direction of the shielding member 2 and the operating direction of the release button 7. When the self-operation button 8 is pressed forward, the self-operation mechanism is set. after that,
When the release button 7 is pressed, the shutter opens and closes after a predetermined period of time has elapsed.

[Operation of the present application]

When the shielding member 2 completely shields the release button 7 and self-release button 8 as shown in FIG. 1, the elastic member 6 is in the position indicated by the dashed line in FIG. 3. In this state, under the urging force of the elastic member 6, the gear 4 is given a clockwise rotational habit, the gear 5 is given a counterclockwise rotational habit, and the shielding member 2 is kept in the closed state. There is.

To close the shielding member 2, the knurled portion 2a of the upper shielding member 2 in FIG. 1 is pressed in the direction of the arrow. Due to this pressure, the rack portion 2d moves to the upper left in FIG.
The gear 5 starts rotating counterclockwise against the urging force of , and the gear 5 starts rotating clockwise.

When the pins 4a, 5a rotate to the position indicated by the solid line (midpoint of rotation) due to the rotation of the gears 4, 5, the stored force of the elastic member 6 becomes maximum. If the pressing force of the knurled portion 2a is released before reaching the midpoint of rotation, the gears 4 and 5 are reversed by the stored force of the elastic member 6, and the shielding member 2 is returned to the right. Once the pressure is exceeded, even if the pressing force of the knurled portion 2a is released, the blocking member 2 continues to move further to the left due to the accumulated force of the elastic member 6.
The left end of the shielding member 2 is the end 3 of the front cover 3
It comes into contact with point a and stops (Fig. 4). In this state,
Since the elastic member 6 exerts a biasing force on the gear 4 in a counterclockwise direction and on the gear 5 in a clockwise direction, the closing member 2 is maintained in an open state.

To close the shielding member 2, when the knurled portion 2a of the upper shielding member 2 in FIG. 5 starts rotating counterclockwise,
Even if the pressing force of the knurled portion 2a is released after the pins 4a, 5a pass the rotational midpoint, the gears 4,
5 continues to rotate, and the right end of the closing member 2 comes into contact with the end 3b of the viewfinder cover 3 and stops.

[Effect of the present application]

In the present invention, the open state or the closed state is maintained by the biasing force of the elastic member both when the shielding member is opened and when it is closed, so a separate locking member is not required.

After the initial opening/closing operation that begins with the pressing of the shielding member, it opens automatically due to the stored force of the elastic member, so when applied to a camera release cover, there is no need to stop halfway in the process of opening and closing. Good sex.

Since no click mechanism is used for the closing member, the operation feels good.

Note that the present invention can be modified and implemented as appropriate within the scope of its gist.

For example, the structure of the elastic member and the gear is not limited to the structure shown in FIGS. 3 and 4, and the snap mechanism may be formed by a spring that is locked to one end of one gear directly or via an intermediate member.

Of course, the present invention can be applied not only to cameras but also to opening/closing devices of other equipment.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the present invention.
FIG. 5 is a sectional view taken along the line AA in FIG. 3. 1...Camera body, 2...Shielding member, 3...Finder cover, 4, 5...Gear, 6...Elastic member, 7...Release button, 8...Self button.

Claims (1)

[Scope of utility model registration request] a gear, an elastic member having at least one end locked to the gear, the position of the locking point applying a biasing force to the gear in the opposite direction from the midpoint of rotation; a slidable closing member that is biased and pressed to one side by the biasing force of the member and activated by a pressing force that resists the biasing force;
After the initial opening/closing operation in which the locking point passes through the midpoint due to activation of the blocking member that resists the biasing force of the elastic member, the locking point is activated by the stored force of the elastic member that is stored due to the activation. An opening/closing device characterized in that opening and closing are completed automatically.