JP2556053B2 - Camera locking device - Google Patents

Description

The present invention relates to a locking device that locks a camera body and a lid member such as a back lid.

B. Prior Art FIG. 7 shows a camera equipped with this type of locking device.
In FIG. 7, 10 is a back cover of the camera, which is rotatably attached to the camera body 20 via a hinge on the right side of the figure. A spring member 10c (FIG. 8 (a)) made of a pressure plate or the like for fixing the film at a proper position is provided on the inner surface of the back cover 10, whereby the back cover 10 is biased in the opening direction.
On the left side of the body 20 shown in the figure, buttons that form the operating portion of the lock device
31 and a slider 32 are provided, and the slider 32 can be operated to the operation position only when the button 31 is being pressed.

8 (a) and 8 (b) are views conceptually showing the mechanism of this locking device. It should be noted that the button 31 and the lock member which appears in and out on the trace of the moving shaft of the slider 32 in conjunction with the button 31 are not shown. The slider 32 has a lock position and a release position, and
The locking member 33, which is constantly biased to the locking position by 37, is connected, and the key portion 33a provided on the locking member 33 is attached to the back cover 10.
The main body 20 and the back cover 10 are locked by engaging the key portion 10a provided on the. A lock member 34 is rotatable about the pin 35 as an axis, is urged counterclockwise by a spring 36, and when the key portions 10a and 33a are engaged, the protrusion 1 of the back cover 10
0b is rotated clockwise against the spring 36,
No downward movement of 33 is regulated.

Now, with the back cover 10 closed, if the slider 32 is operated downward to the operating position while pressing the button 31, the locking member 33 moves to the release position against the urging force, and the key portion 33a and the key portion 10a. Is disengaged and the back lid 10 is opened by the spring force of the spring member 10c provided on the inner surface of the back lid 10 as shown in FIG. 8 (b). At this time, the back lid 10 is opened in the opening direction. Eighth with movement
As shown in FIG. 3B, the lock member 34 is rotated counterclockwise by the spring 36 and is locked by the locking portion 33b of the locking member 33.
As a result, the locking member 33 remains in the operating position even if its operation is stopped.

Next, when the back cover 10 is closed, the protrusion 10b pushes the lock member 34, and the lock member 34 rotates clockwise against the biasing force to release the engagement between the lock member 34 and the locking member 33. To be done. As a result, the locking member 33 moves to the locking position by the urging force,
Both the key portions 33a and 10a are engaged with each other to lock the main body 20 and the back lid 10.

C. Problems to be Solved by the Invention However, in the above-described configuration, the lock member 34 that locks the locking member 33 in the operating position when the case back 10 is opened is indispensable, which makes the device complicated. Become. Further, when the back cover 10 is closed, if the lock member 34 and the locking member 33 are disengaged before the both key portions 10a and 33a face the engaging position, the locking member 33 is urged by the urging force. It will return to the locked position and the key part
The 10a and the key part 33a collide with each other and cannot be engaged.
10 may not be closed.

An object of the present invention is to provide a camera locking device that has a simple structure and can securely lock the lid member to the camera body.

D. Means for Solving the Problems Referring to FIG. 1 showing an embodiment, the present invention provides:
The lid locking portion 10a provided on the lid member 10 and the camera body (see FIG.
0) and the main body engaging portion 51f are engaged with each other to cover the lid member 10
It is applied to a locking device for a camera that locks the camera with the camera body 20. And the above-mentioned problem is that one of the two locking portions 51f and 10a is formed, and the locking portion 51f (10a) and the other locking portion 10a (51f) are locked to each other at the locking position. And a locking member 51 that is urged toward the locking position, and is movable between a return position and an operating position and returns at the operating position. The locking member 51 is urged toward the operating position and is operated by operating the operating position.
Is biased to the release position against the urging force, and when the operation is stopped, the urging force returns to the return position and the locking member
51 returns to the locking position by the biasing force, allows the locking member 51 to move to the release position at the returning position, and moves the locking member 51 to the locking position at the operating position by the operating force. A locking member operating member 56 that is connected to the locking member 51 so as to be restricted, a blocking position that blocks the locking member operating member 56 from moving from the return position to the operating position, and a retracted position that does not block such movement. And the lock member 53 that is urged toward the blocking position and is movable between the return position and the operation position, and is urged toward the return position at the operation position. Is operated to move the lock member 53 to the retracted position against the urging force, and when the operation is stopped, the urging force returns to the return position and the lock member 53
Is provided with a lock member operating member 55 that returns to the blocking position by an urging force, and the locking member operating member 56 is operated while operating the lock member operating member 55 to the operating position to move the lock member 53 to the retracted position. When the locking member 51 is moved to the release position by operating to the operation position, both the locking portions 10 of the lid member 10 and the camera body 20
When the locking of a and 51f is released and the operation of both operating members 55 and 56 is stopped, both operating members 55 and 56 are returned to the return position by the biasing force and locking member 51 is locked to the locking position. 53 is returned to the blocking position by the biasing force, and the lid member 10 is closed without operating both the operation members 55 and 56, so that the locking member 51f (10a) on the locking member 51 side has the other locking portion. 10a
When the locking member 51 is pushed by (51f), the locking member 51 once moves from the locking position to the releasing position against the biasing force and then returns to the locking position by the biasing force, so that both locking portions 10a, 51f Are locked together to lock the lid member 10 to the camera body 20, and the locking member operating member and the lock member operating member are arranged in a direction in which they approach each other along a straight line connecting both operating members. It is solved by configuring it to be operated.

E. Action For example, when the locking member operating member 56 is operated while operating the locking member operating member 55, the locking member 53 moves to the retracted position against the biasing force, and the locking member operating member 56 Moves to the operation position, and the locking member 51
Moves to the release position. As a result, the locking between the locking members 10a and 51f of the lid member 10 and the camera body 20 is released. When the operation of the lock member operating member 55 and the locking member operating member 56 is stopped, the lock member operating member 55 and the locking member operating member 56 respectively return to the return position by the biasing force, and the locking member 51 and The lock member 53 returns to the locking position and the blocking position, respectively.

In this state, if the lid member 10 is closed without operating the lock member operating member 55 and the locking member operating member 56, the locking portion on the locking member side is pushed by the other locking portion and is engaged. The stop member 51 once moves from the locking position to the releasing position against the biasing force, and then returns to the locking position by the biasing force,
Both locking members 10a and 51f are locked to each other.

F. Embodiment An embodiment in which the locking device to which the present invention is applied is used for the back lid opening / closing part will be described with reference to FIGS. 1 to 6.

Fig. 1 is an exploded perspective view of the locking device, and Fig. 2 is its II-II.
FIG. 3 is a sectional view taken along line III-III in FIG.

The pedestal 52 is attached to the camera body 20 (Fig. 2), and the third
As shown in the figure, the key portion 51f of the locking lever 51 attached to the pedestal 52 and the key portion 10a provided on the back cover 10 are locked, and the main body 20 and the back cover 10 are locked. The locking lever 51 is fitted in a recess 52a (FIG. 2) formed inside the pedestal 52, and is slidable between a lower locking position and an upper releasing position.
A lock lever 53 is provided between the pedestal 52 and the locking lever 51, and a hole 53a and a boss 52h projecting inside the pedestal 52 are provided.
(FIG. 3) is engaged, and the lock lever 53 is rotatable about the boss 52h as a shaft between the position shown in FIG. 3 (blocking position) and the position shown in FIG. 4 (retracted position). . One end of the spring 54 is hooked on the spring hook portion 53b of the lock lever 53, and the other end is hooked on the spring hook portion 51a of the hook lever 51. Due to the spring force of the spring 54, the locking lever 51 is normally located at the lowermost portion of the recess 52a, that is, the locking position, and the lock lever 53 is located at the position (blocking position) shown in FIG. The clockwise urging force of the lock lever 53 by the spring 54 acts on the foot 55b of the upper slider 55, which will be described later, to determine the blocking position.

An upper slider 55 is slidably provided between an upper return position and a lower operation position in an upper concave portion 52b formed in an upper outer portion of the pedestal 52, and one foot 55a of the upper slider 55 is provided in the long hole 5 of the pedestal 52.
2c and the long hole 51b of the locking lever 51, and the other leg 55b
Penetrates the long holes 52d and 51c. The legs 55a, 55b are formed so that their tip ends are slightly wider and are press-fitted into the holes 52c, 51b and the holes 52d, 51c so as not to come off. As shown in FIG. 3, an inclined surface 55B is formed on one leg 55b and is always in contact with the cam surface 53c of the lock lever 53, and the upper slider is moved by the clockwise rotational force (FIG. 3) acting on the lock lever 53.
55 is always biased in the return direction. Therefore, the upper slider 55 is located at the uppermost position in the upper recess 52b in the return position, the leg 55a is located above the long holes 52c and the long holes 51b, and the leg 55b is located above the long holes 52d and the long holes 51c. Each is located.

In the lower recess 52e formed in the lower outer portion of the pedestal 52, a lower slider 56 is slidably provided between a lower return position and an upper operation position, and one leg 56a of the lower slider 56a is attached to the pedestal 5.
2 penetrates the long hole 52f formed in 2 and the long hole 51d formed in the locking lever 51, and the other leg 56b has the long hole 52g and the long hole 51e.
Penetrates through. Like the legs 55a and 55b, the legs 56a and 56b have slightly wider front ends and are press-fitted into the holes 52f and 51d and the holes 52g and 51e so as to penetrate therethrough, so that they will not come off. Therefore, the lower slider 56 can slide with respect to the pedestal 52 and can move relative to the latch lever 51. Legs 56
The a and 56b are constantly urged downward by the locking lever 51 that is biased to the lowermost locking position in the recess 52a by the spring 54, so that the lower slider 56 is recessed at its return position. The leg 56a is located at the bottom of the slot 52f, the leg 56a is located under the slot 52f and the slot 51d, and the leg 56b is located under the slot 52g and the slot 51e. At the return position of the lower slider 56, its leg 56b faces the tip of the leg 53d of the lock lever 53 with a predetermined gap,
It is possible to prevent the lower slider 56 from moving to the operating position.

In the above embodiments, the back lid 10 serves as the lid member and the key portion 10a.
Is the lid locking portion, the locking lever 51 is the locking member, the key portion 51f is the main body locking portion, the lock lever 53 is the locking member, and the spring 54
Is a biasing member, the upper slider 55 is a locking member operating member, and the lower slider 56 is a locking member operating member.

 Next, the operation of the embodiment will be described.

-Opening Operation of Back Lid 10- Now, as shown in FIG. 3, the back lid 10 is closed and the key portion 10a and the key portion 51f are engaged. In this state, the upper slider 55
When the lower slider 56 is moved upward, in other words, when both sliders 55 and 56 are simultaneously operated from the return position to the operation position,
First, only the upper slider 55 is operated to the operation position. That is, the sliders 55 and 56 in the return position are being biased by the same spring 54, but the upper slider 55
The leg 55b rotates the lock lever 53 to pull the spring 54, and the lower slider 56 pulls the spring 54 directly.Therefore, the force required to operate the upper slider 55 is Less than with slider 56. Therefore, when the same operating force is applied to both sliders 55 and 56 in opposite directions, the upper slider 55 first starts to move. At this time, the leg 55b descends along the long holes 52d, 51c while sliding on the cam surface 53c of the lock lever 53, whereby the lock lever 53 resists the spring force of the spring 54 as shown in FIG. Rotate counterclockwise.

When the legs 55a, 55b reach the lowermost ends of the long holes 52c, 52d of the pedestal 52, the lock lever 53 rotates to the retracted position and stops.
In this retracted position, the leg 53d of the lock lever 53 is completely retracted from the upper part of the leg 56b of the lower slider 56, so if further operating force is applied to both sliders 55, 56, the lower slider 56 moves from the return position to the operating position. Start. Along with this, the legs 56a and 56b of the lower slider 56 push up the locking lever 51 and ascend along the long holes 52f and 52g of the pedestal 52. As a result, the locking lever 51 slides to the release position against the spring force of the spring 54, and as shown in FIG. 5, the engagement between the key portion 51f of the locking lever 51 and the key portion 10a of the case back 10 is performed. Then, the back cover 10 is opened by the spring force of a spring member (not shown) provided on the inner surface of the back cover 10.

If you stop operating both sliders 55 and 56 in this state, the spring 5
Due to the spring force of 4, both sliders 55, 56 as shown in FIG.
Returns to their respective return positions, and the lock lever 53 and the locking lever 51 return to the blocking position and the locking position, respectively.

As can be seen from FIG. 3, the lower slider 56 is
It cannot be operated unless the upper slider 55 is moved to the operation position.

-Closing Operation of Back Lid 10-Next, when the back lid 10 is closed in this state, as shown in FIG. 6, first, the sliding surface 10b of the key portion 10a is the key portion of the locking lever 51.
It contacts the sliding surface 51g of 51f. If you apply more force, the key part
Along with the movement of 10a in the direction A in the figure, the sliding surface 10b is the key portion.
The key portion 51f is pushed upward while sliding on the sliding surface 51g of the 51f. At this time, the movement of the lower slider 56 is blocked by the lock lever 53, but the lower slider 56 and the locking lever are
Since 51 is connected so as to be relatively movable, when the locking lever 51 slides to the release position against the spring force of the spring 54, when the back cover 10 is completely operated to the closed position. Key part 10
When a reaches a position where it can be engaged, the locking lever 51 returns to the locking position by the spring force of the spring 54. As a result, as shown in FIG. 3, the key portion 10a and the key portion 51f are engaged with each other, and the back lid 10 is locked to the camera body 20.

As described above, when opening the back cover,
The lower slider 56 can be operated by the operation of, and the locking lever 51 is moved to the release position by the operation of the lower slider 56 to release the engagement between the key portion 51f and the key portion 10a, and when closing the back cover, The key 10a is locked by the closing lever 51
Is pushed to the release position to engage both the key portions 10a and 51f, so that the lock member (see FIG.
(Indicated by 34) is not necessary, and both can be locked more reliably.

Also, since the back cover 10 is prevented from opening unless the upper slider 55 is slid in one direction and the lower slider 56 is slid in the other direction, the back cover is carelessly placed in a bag or the like.
There is no risk of opening 10. Furthermore, even if a force in the operating direction is applied to both sliders 55 and 56 at the same time, the upper slider 55 always moves first, and the leg 53d of the lock lever 53 moves to the lower slider 56.
Since the lower slider 56 starts to move after retreating from the upper part of the leg 56b, the operation can be performed in an appropriate order without particularly being aware of the operation order, and the leg 53d of the lock lever 53 can be performed.
Can be rotated from the blocking position to the retracted position without making sliding contact with the leg 56b of the lower slider 56, thereby reducing the operating force of the upper slider 55.

In the locking device of this embodiment, the locking device is attached to the camera body side to lock the key part and the key part provided on the back cover, but on the contrary, the locking device is locked on the back cover side. A lock device may be attached to lock the key portion and the key portion provided on the main body side. Further, the present invention is not limited to the back cover of the camera, and is also applied to a lock device that locks the battery box cover or other cover member and the camera body.

G. Effect of the Invention According to the present invention, when the engagement between the locking portion of the main body and the lid locking portion is released, it is not necessary to lock the locking member in the release position, and therefore, a locking member therefor is unnecessary. In addition to simplifying the structure, the main body and the lid member can always be reliably engaged. Further, even though the lock release operation can be performed extremely easily, there is almost no risk of the lock being released accidentally.

Further, the locking member is of a linear movement type and the locking member is of a rotary type, and these two members, the locking member operating member, and the locking member operating member are bridged between the locking member and the locking member. If the urging means is used, the operation of the lock member operating member is an operation of rotating the lock member against the urging force of the urging means, while the operation of the locking member operating member is performed. This is an operation of linearly moving the lock member against the urging force of the urging means, and the operation of the lock member operating member requires less force than the operation of the locking member operating member. In the present invention, both operating members are operated by pinching them with two fingers. On the other hand, the locking member cannot be operated to the release position without first moving the locking member to the retracted position. By enabling to operate with a smaller force than the locking member operating member, a smooth unlocking operation can be performed.

Further, if the locking member operating member and the lock member operating member have the same shape, the parts can be shared and the manufacturing cost can be reduced.

[Brief description of drawings]

1 to 6 show an embodiment of the present invention, FIG. 1 is an exploded perspective view of a locking device, FIG. 2 is a sectional view taken along the line II-II, and FIG. 3 is III of FIG. -III sectional drawing, FIGS. 4-6 is sectional drawing explaining movement of a locking device. FIGS. 7, 8 (a) and 8 (b) show a conventional example, FIG. 7 is a perspective view of a camera showing an operating portion of a locking device, and FIGS. 8 (a) and 8 (b) are locking. It is a figure explaining movement of a device. 10: Back cover, 10a: Key part 20: Camera body, 51: Locking lever 51f: Key part, 52: Pedestal 53: Lock lever 54: Spring, 55: Upper slider 56: Lower slider

Claims (3)

(57) [Claims] 1. A locking device for a camera, wherein a lid locking portion provided on a lid member and a body locking portion provided on a camera body are locked to each other to lock the lid member to the camera body. One of the locking portions is formed, and the locking portion and the other locking portion are moved between a locking position in which they are locked to each other and a release position in which this locking is released. The locking member urged toward the position, movable between the return position and the operation position, and urged toward the return position in the operation position, and the locking by operating to the operation position. The member is biased to the release position against the urging force, and when the operation is stopped, the urging force returns to the return position and the locking member returns to the locking position due to the urging force. Allows the stop member to move to the release position, and operates it at the operating position. The locking member operating member connected to the locking member so as to restrict the movement of the locking member to the locking position, and the movement of the locking member operating member from the return position to the operating position. A lock member that moves between a blocking position that blocks and a retracted position that does not block this movement, and is urged toward the blocking position, and movable between a return position and an operating position, and returns at the operating position. The lock member is urged toward the position and is moved to the operating position to move the lock member to the retracted position against the urging force. When the operation is stopped, the urging force returns to the return position and the lock A lock member operating member that returns to a blocking position by an urging force, and the locking member operating member is operated while operating the lock member operating member to an operating position and operating the lock member to a retracted position. operation When the locking member is operated to the position to move the locking member to the release position, the locking of both the lid member and the locking portion of the camera body is released. The locking member returns to the return position by the biasing force, the locking member returns to the locking position and the locking member returns to the blocking position by the biasing force, and the lid member is closed to operate the locking member side without operating both operating members. When the locking part of is pushed by the other locking part, the locking member once moves from the locking position to the release position against the biasing force and then returns to the locking position by the biasing force, Both locking portions are locked to each other to lock the lid member to the camera body, and the locking member operating member and the lock member operating member are arranged along a straight line connecting the both operating members. Designed so that they can be operated in the direction of being close to each other Camera locking device, characterized in that the. 2. The locking device for a camera according to claim 1, wherein the locking member moves linearly between the locking position and the releasing position, and the locking member is The locking member, the locking member, the locking member operating member, and the locking member operating member are configured to rotate between the blocking position and the retracted position. A locking device for a camera, characterized in that the device is urged by an urging means hung between the member and the member. 3. The locking device for a camera according to claim 1, wherein the locking member operating member and the locking member operating member have the same shape. Locking device for the camera.