JP2002258367A - Lid opening and closing device for camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the costs for manufacture and maintenance by decreasing the number of components and the number of assembly stages. SOLUTION: A opening/closing lid device for a camera is equipped with a lid member (1) which is opened and closed on a camera main body (3), an engagement member (6) which is movable between the engagement position where the lid member is engaged and the disengagement position where the lid member is disengaged, an operation member (6b) which operates to move the engagement member, and a restriction member (10d) which restricts the operation of the operation member; and the restriction member (10d) is formed integrally with a release member (10a) which releases the operation member from being restricted by the restriction member and an energizing member (10b) which energizes the release member in the restricting direction and the energizing member is clamped between at least one of the operation member and engagement member, and the opening/closing lid device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera lid opening and closing device.

[0002]

2. Description of the Related Art A camera is provided with a back cover that can be opened and closed to insert and remove a film. The back cover is generally provided on the back of the camera body, and one end thereof is locked to the camera body by a shaft such as a hinge so that it can be freely opened and closed. Also, a key portion is provided at the other end, and this key portion is locked by the locking mechanism of the camera body, so that the back cover is closed to the camera body. When the photographer intentionally operates the lock release unit that is linked to the locking mechanism, the lock on the back cover is released, and the back cover is opened.

[0003] Conventionally, in some cameras, the back lid locked to the camera body is opened when the photographer does not intend to do so, and the already loaded film is exposed, In order to prevent the internal mechanism and the back cover from being damaged, a safety device is provided in the locking mechanism.

In order to provide this safety device, it is necessary to simultaneously provide a lock mechanism for locking the locking mechanism. Then, the number of parts of the camera is increased, the number of assembling steps is increased, and the manufacturing cost of the camera is increased. Further, if a mechanism for electrically detecting a part of the lock mechanism or a mechanism for interlocking with the film rewinding operation can be used, the safety device can be made more reliable, but the cost is still inevitable.

[0005] In addition, an increase in the number of parts causes an enlargement of a camera,
This can lead to an increase in weight, which is contrary to recent product orientation. Further, in terms of assembly and maintenance, the operation of a complicated and large number of parts becomes complicated.

FIG. 13 is a plan view and FIG. 14 and FIG. 15 are sectional views of a conventional camera lid opening / closing device. Operation button 3
0 indicates that when the photographer releases the lock of the locking mechanism,
The pressing operation is performed in a direction perpendicular to the paper surface of FIG. 13 (to the right in FIG. 14). The lock lever 31 is an elastic lever member that is cantilevered by a stop screw 32,
Move (deform) in the same direction in conjunction with. The lock lever 31 is integrally formed with a lock lever claw portion 31a. With the movement (deformation) of the lock lever 31, a concave portion 15a formed inside (inner wall) of the exterior cover 15
Is released from the lock lever claw 31a. As a result, the locked state of the locking plate 6 is released, and the locking plate 6 can be moved vertically in FIGS. 13 and 14.

[0007]

In a conventional camera lid opening / closing device, a lock lever 31 and a lock lever claw portion 31a are provided.
Are required, and the man-hours for assembling these parts are required. For this reason, there is a problem in that the number of parts and the number of assembling steps increase the cost during manufacturing and maintenance.

The present invention has been made in view of the above problems, and has as its object to reduce the number of parts and the number of assembling steps to reduce costs during manufacturing and maintenance.

[0009]

In order to achieve this object, a first aspect of the present invention provides a cover member (1) which can be opened and closed with respect to a camera body (3), and a locking member for locking the lid member. Locking member movable to a position and a release position for releasing the lock (6)
And an operation member (6) operated to move the locking member.
b) and a restricting member for restricting the operation of the operating member (10d)
And a restriction member (10d) configured to release the restriction of the operation member by the restriction member, and a biasing member (10d) configured to bias the release member in a direction to restrict the release member. 10b), the biasing member is sandwiched between at least one of the operating member and the locking member, and the opening / closing lid device.

According to a second aspect of the present invention, in the first aspect, the biasing means has two V-shaped elastic arms (10b).
It is characterized by comprising.

According to a third aspect of the present invention, in the first aspect, the urging means is a single elastic arm (10) formed in a U-shape.
e).

According to a fourth aspect of the present invention, in the first aspect, the release member is inserted through the operation member and can be operated integrally with the operation member.

According to a fifth aspect of the present invention, in the first aspect, the restricting member restricts the movement of the locking member from the locking position to the releasing position.

[0014]

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

1 to 9 are a plan view and a sectional view showing a first embodiment of a camera lid opening and closing device according to the present invention. The back cover locking mechanism is provided on a side portion (the front surface in FIG. 1) of the camera body 3 and functions to lock or unlock the locking key 1 a of the back cover 1.

In FIG. 1, one end of the back cover 1 is attached to the back of the camera body 3 by a hinge shaft (not shown) or the like. At the other end of the back cover 1, a locking key 1a is provided. The locking plate 6 can slide between the operation limiting bosses 3 a and 3 b protruding from the camera body 3. An operation knob 6b is provided in a central portion (FIG. 1) of the locking plate 6 in a partially convex state (see FIG. 2). The photographer moves the operation knob 6b up and down (FIGS. 1 and 2).
By performing the sliding operation, the locking key 1a is locked or unlocked.

When the photographer slides the operation knob 6b upward (FIGS. 1 and 2), the locking plate 6 is locked as shown in FIG. At this time, the locking groove 6a of the locking plate 6 engages with the locking key 1a. When the photographer slides the operation knob 6b downward (FIGS. 1 and 2), the engagement between the locking groove 6a and the locking key 1a is released, and the locking key 1a (back cover 1) is released. Movement (rotation) to the right in FIG. 1 is enabled.

In FIG. 2, a lock member 10 as a safety device is provided with an operating portion 10a through a hole 6c provided in the locking plate 6.
Is inserted into the camera body 3 in a state where the
At the same time, it slides up and down in FIG. The lock member 10 has two elastic arms 10b separated in a V shape,
The arm tip 10c of the elastic arm 10b is the camera body 3
Slides with. Thus, the elastic arm 10b is connected to the operation unit 1
0a is urged against the camera body 3 to the left in FIG.

As shown in FIG. 1, the lock member 10 has two claws 10d at left and right. The claw 10d is urged leftward in FIG. 3 by the elastic force of the elastic arm 10b. As a result, the claw 10d is urged in the direction of the inner recess 15a of the outer cover 15. Further, the claw 10d of the lock member 10 is engaged with the inner convex portion 15b of the outer cover 15,
The downward movement in FIG. 3 is restricted. Since the operation portion 10a of the lock member 10 passes through the hole 6c of the locking plate 6,
The locking plate 6 is in a locked state where it cannot slide in the locking releasing direction of the back cover 1 (downward in FIG. 1). In this state, the back cover 1 cannot be opened (moved to the right in FIG. 1) unless the photographer performs an unlocking operation.

FIGS. 4 to 9 show the case where the lock is released and the back cover 1 is opened.
FIG. 5 is a cross-sectional view illustrating an operation until the back cover 1 is released and the back cover 1 is opened.

In FIG. 4, when the photographer pushes the operating portion 10a of the lock member 10 in the direction of the camera main body 3 (rightward in FIG. 4) against the elastic force of the elastic arm 10b, the lock member becomes as shown in FIG. 10 is separated from the inner concave portion 15a of the outer cover 15. As a result, the claw 10d is no longer restricted by the inner convex portion 15b of the outer cover 15, and the locking plate 6 is in an unlocked state in which it can move in the unlocking direction of the back cover 1 (downward in FIG. 4). . In this state, the operation of releasing the locking of the back cover 1, that is, the locking plate 6 is
In the unlocking direction (downward in FIG. 4).

In FIG. 4, in the unlocked state in which the operating portion 10a is pressed, the locking knob 6b provided on the locking plate 6 is used to release the locking plate 6 in the unlocking direction of the back cover 1 (downward in FIG. 4). When the lock member 10 is slid, as shown in FIG. 6, the claw 10d of the lock member 10 slips through the inner protrusion 15b of the outer cover 15 and slides downward in FIG.

In FIGS. 7 and 8, the locking plate 6 is
When the sliding operation is performed in the unlocking direction (downward direction in FIG. 7), the locking groove 6a in the locking plate 6 as shown in FIG.
Is released from the locking key 1a, and the locking of the back cover 1 is released.
At this time, the photographer can open the back cover 1, that is, move (turn) to the right in FIG.

As shown in FIG. 9, when the photographer stops pressing the operating portion 10a of the lock member 10 after the back cover 1 is released, the elastic force of the elastic arm 10b causes the outer cover 15 to be closed. The lock member 10 is biased in the direction (leftward in FIG. 9). At the same time, the stopper 6d of the locking plate 6 is hooked on the immovable portion 20 provided on either the camera body 3 or the inside of the outer cover 15. The locking plate 6 is provided with a stopper 6d so that the locking plate 6 does not unexpectedly slide in the locking direction of the back cover 1 (upward in FIG. 1) when the back cover 1 is unlocked. ing. The stopper 6d is
As described later, the sliding operation of the back cover 1 is restricted by being caught on the immovable portion 20. Although not shown, a spring for automatically returning the locking plate 6 in a predetermined direction or a switch for detecting the open / closed state may be provided. When the operation up to this point is completed, the preparation for locking the back cover 1 is completed.

In FIG. 7, when the photographer locks the back cover 1 to the camera body 3, when the back cover 1 is closed, the protrusion 1b on the back cover 1 moves the stopper 6d on the locking plate 6 to the position shown in FIG. To the left to release the catch on the immovable part 20. Thereby, the locking plate 6 is locked in the locking direction of the back cover 1 (upward in FIG. 7).
To the back cover 1 as shown in FIG.
Can be locked. The lock member 10 is, as shown in FIG.
The outer cover 15 slides while being urged in the direction of the outer cover 15 (to the left in FIG. 9), and enters the inner recess 15a of the outer cover 15 as shown in FIG. Return to locked state.

FIGS. 10 to 12 are sectional views showing a second embodiment of the camera lid opening / closing device according to the present invention. In the figure,
The same components as those of the first embodiment shown in FIGS. 1 to 9 are denoted by the same reference numerals, and duplicate description will be omitted.

The lock member 10 in the first embodiment has two elastic arms 10b separated in a V-shape.
The lock member 10 in the embodiment has one elastic arm 10e.
Having only The elastic arm 10e is formed in a U shape,
The arm tip 10f of the elastic arm 10e is the camera body 3
Slides with. Thereby, the elastic arm 10e is connected to the operation unit 1
0a is urged against the camera body 3 in the leftward direction in FIGS. The other points are the same as those of the first embodiment shown in FIGS.

[0028]

As described above, according to the camera lid opening / closing apparatus of the present invention, the restriction member (10d) includes the release member (10a) for releasing the restriction of the operation member by the restriction member, and the release member. The biasing member is formed integrally with the biasing member (10b) for biasing in the direction of rotation, and the biasing member is sandwiched between at least one of the operating member and the locking member and the opening / closing lid device. . As a result, it is possible to reduce costs during manufacturing and maintenance by reducing the number of parts and the number of assembly steps.

[Brief description of the drawings]

FIG. 1 is a plan view showing a first embodiment of a camera lid opening / closing device according to the present invention.

FIG. 2 is a sectional view showing a first embodiment of a camera lid opening / closing device according to the present invention.

FIG. 3 is a sectional view showing a first embodiment of a camera lid opening / closing device according to the present invention.

FIG. 4 is a sectional view showing a first embodiment of a camera lid opening / closing device according to the present invention.

FIG. 5 is a sectional view showing a first embodiment of a camera lid opening / closing device according to the present invention.

FIG. 6 is a sectional view showing a first embodiment of a camera lid opening / closing device according to the present invention.

FIG. 7 is a sectional view showing a first embodiment of a camera lid opening / closing device according to the present invention.

FIG. 8 is a sectional view showing a first embodiment of a camera lid opening / closing device according to the present invention.

FIG. 9 is a sectional view showing a first embodiment of a camera lid opening / closing device according to the present invention.

FIG. 10 is a plan view showing a second embodiment of the camera lid opening / closing device according to the present invention.

FIG. 11 is a sectional view showing a second embodiment of the camera lid opening / closing device according to the present invention.

FIG. 12 is a sectional view showing a second embodiment of the camera lid opening / closing device according to the present invention.

FIG. 13 is a plan view showing an example of a conventional camera lid opening / closing device.

FIG. 14 is a cross-sectional view showing an example of a conventional camera lid opening / closing device.

FIG. 15 is a cross-sectional view showing an example of a conventional camera lid opening / closing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Back cover 1a Locking key 1b Projection 3 Camera body 3a Operation restriction boss 3b Operation restriction boss 6 Locking plate 6a Locking groove 6b Operation knob 6c Hole 6d Stopper 10 Lock member 10a Operation part 10b Elastic arm 10c Arm tip part 10d Claw 10e Elastic arm 10f Arm tip 15 Outer cover 15a Inner concave portion 15b Inner convex portion 20 Immovable part 30 Operation button 31 Lock lever 31a Lock lever claw 32 Screw

Claims (5)

[Claims] A cover member that can be opened and closed with respect to the camera body; a locking member that can be moved to a locking position for locking the lid member and a release position for releasing the locking; A lid for opening and closing the camera, comprising: an operation member operated to move the operation member; and a restriction member that restricts the operation of the operation member, wherein the restriction member releases the restriction of the operation member by the restriction member. And a biasing member for biasing the release member in the restricting direction, the biasing member being integrated with at least one of the operating member and the locking member, and the opening / closing lid. A lid opening / closing device for a camera, which is sandwiched between the device and the device. 2. A camera lid opening / closing device according to claim 1, wherein said urging means is constituted by two elastic arms separated in a V-shape. 3. The camera lid opening / closing device according to claim 1, wherein said urging means comprises a single elastic arm formed in a U-shape. 4. The camera lid opening / closing device according to claim 1, wherein the release member is inserted through the operation member and can be operated integrally with the operation member. 5. The camera lid opening / closing device according to claim 1, wherein the restricting member restricts movement of the locking member from the locking position to the release position.