JPH09325398A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily confirm the opening/closing states of the cover of a cartridge chamber in which a film cartridge is loaded by providing an informing means for informing a user of the opening/closing states of the cover of the cartridge chamber. SOLUTION: In the side surface of the cover 1, holes 1c and 1d bored through the cover 1 are formed and the operating part 7a of a control panel 7 is projected outside the cover 1 through the hole 1d. When the control panel 7 and a hook plate 8 are in positions shown by a full line, the cover 4 of the cartridge chamber is in a completely closed state and when the control panel 7 and hook plate 8 and in positions shown by a chain line, the cover 4 is not in the completely closed state. In a state where the cover 4 of the cartridge chamber is completely closed, the hook plate 8 can be seen through the hole 1c and in a state where the cover 4 is not completely closed, a situation is brought about where the hook plate 8 can not be seen or can be seen through not the whole of the hole 1c but a part of it, even if the hook plate 8 is seen. Therefore, to is confirmed whether the cover 4 of the cartridge chamber is completely closed or not, from the fact that the hook plate 8 can be seen through the whole of the hole 1c or not.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera capable of easily confirming the open / closed state of a cartridge chamber cover.

[0002]

Conventionally, there has been no camera for indicating the open / closed state of the cartridge chamber lid (back lid) by means of a display or the like. Therefore, even if the cartridge chamber cover is closed in an incomplete state, the photographer may perform the photographing operation without noticing that, and in that case, the flatness of the film exposure surface by the pressure plate becomes insufficient. Alternatively, light may enter the cartridge chamber from the opening / closing portion of the cartridge chamber cover, and a normal captured image may not be obtained.

An object of the present invention is to provide a camera capable of easily confirming the open / closed state of a cartridge chamber lid for accommodating a film cartridge.

[0004]

An embodiment of the invention will be described with reference to FIGS. 1, 3 to 5 and 15. Figure 1
3 and 5, the invention of claim 1 is applied to a camera provided with a cartridge chamber 5 for accommodating a film cartridge 20 and a cartridge chamber lid 4 for shielding the cartridge chamber 5 from light. The above-mentioned object is achieved by providing notifying means 16, 17, 30 for notifying the open / closed state of No. 4. In the camera according to the second aspect of the present invention, the notifying means includes the display device 17, the detection device 16 that detects the open / closed state of the cartridge chamber lid 4, and the open / closed state of the cartridge chamber lid 4 according to the detection output of the detection device 16. And a display control means 30 for displaying on the display device 17. With reference to FIG. 15, in the camera according to the third aspect of the invention, the notifying means is passed through the through hole 1c formed in the cover 1 of the camera and the opening and closing of the cartridge chamber lid 4 and through the hole 1c. A member 8 whose visual form differs depending on the opened / closed state of the cartridge chamber lid 4 is provided. Referring to FIG. 4, in the camera according to the fourth aspect of the invention, the cartridge chamber 5 has a structure in which the film cartridge 20 is loaded and stored in the axial direction.

In the camera according to the first aspect of the invention, the opening / closing state of the cartridge chamber lid 4 is notified by the notifying means 16, 17, 30. In the camera according to the invention of claim 2,
The detection device 16 detects the open / closed state of the cartridge chamber cover 4, and the open / closed state of the cartridge chamber cover 4 is displayed on the display device 17 according to the detection output. In the camera according to the invention of claim 3, a through hole 1c formed in the cover 1 of the camera.
The open / closed state of the cartridge chamber lid 4 is notified by the visual confirmation mode of the member 8 which can be visually confirmed.

In the section of the means for solving the above-mentioned problems, which explains the configuration of the present invention, the drawings of the embodiments of the present invention are used to make the present invention easier to understand. However, the present invention is not limited to the embodiment.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. -First Embodiment- FIGS. 1 to 3 are views showing a first embodiment of a camera according to the present invention. FIG. 1 is a diagram showing a schematic structure of a camera. The camera according to the present embodiment opens and closes a cover 1, a taking lens 2, and a cartridge chamber lid 4 that form the appearance of the camera, and a film cartridge (not shown). A cartridge lid opening / closing mechanism 3 for opening / closing the light-shielding door and a cartridge chamber 5 for accommodating a film cartridge
And a film chamber 6 for storing the film pulled out from the film cartridge. FIG. 2 is a plan view showing the upper surface of the camera, and 17 is a liquid crystal display (LCD) for displaying various functions of the camera and the open / closed state of the cartridge chamber lid 4. FIG. 3 is the LCD shown in FIG.
FIG. 17 is a view for explaining 17; the LCD 17 is controlled by a control circuit 30 to display various shooting modes, a film counter, etc., and open / close display of the cartridge chamber lid 4. Reference numeral 17a is a display section that indicates the open / closed state of the cartridge chamber lid 4, and the cartridge lid opening / closing detection switch 1 to be described later.
The display form changes according to the ON / OFF state of 6. Incidentally, in FIG. 3, the display portion 17a is the cartridge chamber lid 4
Shows a completely closed state.

FIGS. 4, 5 and 6 are views for explaining the cartridge lid opening / closing mechanism 3 portion of the camera shown in FIG. 1, and show a state in which the cartridge chamber lid 4 is closed. 5 and 6 are sectional views taken along the line AA and B of FIG. 4, respectively.
It is a -B sectional view. As shown in FIGS. 4, 5 and 6, the cartridge lid opening / closing mechanism 3 includes (a) an operation plate 7 for performing an opening / closing operation of the cartridge chamber lid 4 and an opening / closing operation of the light shielding door of the film cartridge 20, ( b) A key plate 8 for opening and closing the cartridge chamber lid 4 in conjunction with the operation of the operation plate 7, and (c) ON depending on the position of the key plate 8.
A cartridge lid opening / closing detection switch 16 for turning off,
(D) An auxiliary member 9 for transmitting a force applied to the cartridge chamber lid 4 to the light shielding interlocking plate 11 to be described later at the time of closing operation of the cartridge chamber lid 4 to assist the opening / closing operation of the light shielding door of the film cartridge 20, ) Film cartridge 20
A light-blocking door fork 15 for rotating and opening and closing the light-blocking door by engaging with the door engaging portion 20a of the film cartridge 20 when the cartridge is loaded in the cartridge chamber 5.
And (f) a light-shielding interlocking plate 11 that engages with the light-shielding door fork 15 and the operation plate 7 and rotates the light-shielding door fork 15 by the operation of the operation plate 7.

As shown in FIG. 5, the operation plate 7 is rotatably supported about the axis O1 and drives the light-shielding interlocking plate 11 to rotate the light-shielding door fork 15 and the lock plate 8 as well. It has a function of opening the cartridge chamber lid 4. The operation plate 7 is provided on the operation plate 7 so as to protrude outside the cover 1.
And an engaging hole portion 8 of the key plate 8 for operating the
A protrusion 7b for engaging with the key c for interlocking the key plate 8 with the operation of the operation plate 7 and a hole 7c for engaging with the engaging portion 11a of the light-shielding interlocking plate 11 are formed. Further, the operation plate 7 is biased clockwise by the spring 14 about the axis O1.

The key plate 8 is rotatably supported about the axis O1 like the operation plate 7, and is biased clockwise by a spring 10. When the cartridge chamber cover 4 is closed, the lock plate 8 has
Key portion 8a that engages with the key portion 4a, a spring portion 8b for locking the key plate 8 to the camera body so as not to rotate when the cartridge chamber lid 4 is opened, and a protrusion of the operation plate 7. An engaging hole portion 8c that engages with the portion 7b is formed.

The auxiliary member 9 is rotatably supported about the axis O2, and has an inclined surface 9b, an escape groove 9c for escaping the protrusion 4c formed on the cartridge chamber lid 4, and the cartridge chamber lid 4. The slope 9 for facilitating escape of the protrusion 4c engaged with the escape groove 9c when opened from the escape groove 9c.
a (see FIG. 4) are formed. In addition, the auxiliary member 9
Is urged by the spring 12 in the counterclockwise direction about the axis O2. Reference numeral 13 is a locking portion formed on the camera body, which engages with the spring portion 8b of the key plate 8.

As shown in FIG. 6, the light-shielding interlocking plate 11 is arranged above the cartridge chamber 5 and is supported rotatably about an axis O4. The light-shielding interlocking plate 11 includes an engaging portion 11a that engages with the hole portion 7c of the operation plate 7 and a gear portion 11 that meshes with the gear portion 15a of the light-shielding door fork 15.
b are formed.

The light blocking door fork 15 is a light blocking interlocking plate 11.
Along with the upper end of the cartridge chamber 5, it is rotatable about an axis O5, and the gear portion 11 of the light-shielding interlocking plate 11 is provided.
The gear portion 15a that meshes with b, and the film cartridge 2
It is composed of a fork portion 15b which engages with the door engaging portion 20a (FIG. 4) of the film cartridge 20 when 0 is loaded in the cartridge chamber 5.

Further, the cartridge chamber lid 4 has a groove 4e,
4f (FIG. 5) has protrusions 1a and 1b formed on the cover 1, and when the cartridge chamber lid 4 is closed, the protrusions 1a and 1b are fitted into the grooves 4e and 4f, respectively. Shade 5 The cartridge chamber lid 4 is provided with a cartridge supporting member 21 and a spring 22. When the film cartridge 20 is loaded in the cartridge chamber 5, the door engaging portion 20a of the film cartridge 20 serves as a fork portion 15b. The film cartridge 20 is biased upward so as to be engaged.

Next, the operation will be described. First, the opening operation of the cartridge chamber lid 4 will be described. 4 to 6
Shows the state in which the cartridge chamber lid 4 is closed, and the contact 16a of the cartridge lid opening / closing detection switch 16 is pressed against the contact 16b by the key plate 8 and is in the ON state. At this time, the display section 17a of the LCD 17 is displayed as shown in FIG. From this state, the cartridge chamber cover 4
In order to open the opening, the operation portion 7a provided on the operation plate 7 is moved in the direction of arrow C in FIG. 5 against the biasing force of the spring 14 to rotate the operation plate 7 counterclockwise (direction of arrow D). .

FIG. 7 is a view showing a state in which the operating portion 7a is operated from the state shown in FIG. 5 to slightly rotate the operating plate 7 in the direction of arrow D. When the operation plate 7 is rotated in the direction of the arrow D from the state shown in FIG. 5, the right end surface of the hole 7c shown in the drawing comes into contact with the right end surface of the engagement portion 11a of the light-shielding interlocking plate 11 shown in FIG. Will be driven in the direction of arrow E.
When the operation portion 7a is further operated to rotate the operation plate 7,
The protruding portion 7b of the operation plate 7 comes into contact with the upper end surface of the engaging hole portion 8c of the key plate 8 in the figure. As a result, when the operation portion 7a is further operated, the operation plate 7 and the key plate 8 are integrally rotated with each other about the axis O1 in the arrow D direction.

8 and 9 are views showing a state in which the operating portion 7a is further operated from the state of FIG. 7 to rotate the operating plate 7 in the direction of arrow D. From the state of FIG.
When the operation plate 7 is rotated in the direction of the arrow D against the urging force of the lock plate 8 due to the engagement between the protrusion 7b and the engagement hole 8c.
Is rotated against the urging force of the spring 10, and the engagement between the key portion 8a of the key plate 8 and the key portion 4a of the cartridge chamber lid 4 is gradually released. Further, the rotation of the lock plate 8 causes the contact 16a of the cartridge lid opening / closing detection switch 16 to be in the OFF state because the contact 16a is separated from the contact 16b, whereby the control circuit 30 does not completely close the cartridge chamber lid 4 on the display portion 17a of the LCD 17. The state is displayed as shown in FIG. On the other hand, the light-shielding interlocking plate 11 rotates in the direction of arrow F about the axis O4 as shown in FIG.
Rotates in the direction of arrow G about the axis O5. As a result, the light blocking door of the film cartridge 20 is rotated in the closing direction.

As shown in FIG. 9, the spring 22 urges the film cartridge 20 upward through the cartridge supporting member 21 and the cartridge chamber lid 4 downward through the drawing. Therefore, when the engagement between the key portion 8a and the key portion 4a gradually disengages as described above, the protrusion 4c of the cartridge chamber lid 4 disengages from the escape groove 9c of the auxiliary member 9 and comes into contact with the inclined surface 9a. Rotate counterclockwise around. In this state, the protrusions 1a and 1b of the cover 1 are respectively provided with the groove 4 of the cartridge chamber lid 4.
The inside of the cartridge chamber 5 is in a light-shielded state because it is not completely separated from a and 4f. Further, since the film cartridge 20 is biased upward in the drawing by the spring 22 as described above, the engagement between the door engaging portion 20a and the fork portion 15b is not disengaged.

FIGS. 11 and 12 are views showing a state in which the operation plate 7 is further rotated from the states shown in FIGS. 8 and 9. When the operation plate 7 is further rotated in the direction of the arrow D from the state of FIG. 8, the spring portion 8b of the lock plate 8 engages with the locking portion 13 formed on the camera body, and the lock portion 8a and the cartridge chamber lid 4 also. The engagement with the key portion 4a is completely released.
Therefore, the cartridge chamber lid 4 is rotated counterclockwise about the axis O3 by the urging force of the spring 22, and the protrusion 4c
The contact state between the auxiliary member 9 and the auxiliary member 9 is released.

On the other hand, the light-shielding interlocking plate 11 and the light-shielding door fork 15 are further rotated by the rotation of the operation plate 7 described above, and the light-shielding door of the film cartridge 20 is completely closed (see FIG. 6). In this way, the cartridge chamber lid 4 is completely opened as shown in FIG. 12, and the film cartridge 20 (not shown) is taken out from the cartridge chamber 5. When the cartridge chamber lid 4 is completely opened, the auxiliary member 9 returns from the deformed state to the original state.

Next, the closing operation of the cartridge chamber cover 4 will be described. FIG. 13 is a view showing a state in which the cartridge chamber lid 4 is closed in the direction of arrow H. When the cartridge chamber lid 4 is closed from the state shown in FIG. 11, first, the protrusion 4c of the cartridge chamber lid 4 contacts the slope 9b of the auxiliary member 9. As the cartridge chamber lid 4 is further closed,
The auxiliary member 9 is rotated in the arrow J direction about the axis O2 against the biasing force of the spring 12, and the engaging portion 1 of the light-shielding interlocking plate 11 is rotated.
1a. When the auxiliary member 9 further rotates, the engaging portion 11a is moved in the arrow K direction and the operation plate 7
Is rotated in the direction of arrow N by the spring 14. As a result, as shown in FIG. 14, the light-shielding interlocking plate 11 is rotated in the direction of arrow L, the light-shielding door fork 15 is rotated in the direction of arrow M about the axis O5, and the light-shielding door of the film cartridge 20 starts to open. In this state, the protrusion 1 of the cover 1
a and 1b are groove portions 4e and 4 of the cartridge chamber lid 4, respectively.
Since it is inserted into f, the interior of the cartridge chamber 5 is in a light-shielded state.

When the cartridge chamber lid 4 is further closed in the direction of arrow H, the corner portion 4b of the cartridge chamber lid 4 abuts on the spring portion 8b of the key plate 8 (FIG. 13), and the engaging portion 13 and the spring portion 8b. The spring portion 8b is pushed upward in the drawing so as to be disengaged from. When the cartridge chamber lid 4 is further closed,
The engagement between the spring portion 8b of the key plate 8 and the locking portion 13 is released, and the restoring force of the spring 10 causes the key plate 8 to rotate in the direction of arrow N about the axis O1. The operation plate 7 is rotated by rotating the key plate 8.
The projecting portion 7b comes into contact with the upper end surface of the engaging hole portion 8c in the figure, and the urging force of the spring 14 is also applied to the operation plate 7 so that the operation plate 7 is indicated by the arrow N
Rotate further in the direction. By this rotation, the engaging portion 11a is further moved in the direction of the arrow K, and the light-shielding interlocking plate 11 and the light-shielding door fork 15 are rotated to rotate the film cartridge 20.
The light-shielding door is opened further.

When the cartridge chamber lid 4 is completely closed (state shown in FIG. 5), the key portion 8a of the key plate 8 rotating in the direction of the arrow N and the key portion 4a of the cartridge chamber lid 4 are engaged with each other. The protrusion 4c comes to the position of the escape groove 9c of the auxiliary member 9, and the auxiliary member 9 is rotated counterclockwise by the biasing force of the spring 12 so that the protrusion 4c and the escape groove 9c are engaged with each other. At this time, the light-shielding door of the film cartridge 20 is completely opened, and the terminal 16a is pressed against the terminal 16b by the key plate 8 of the cartridge lid opening / closing detection switch 16 to be turned on. As a result, the control circuit 30
Displays on the display unit 17a of the LCD 17 as shown in FIG.

In the present embodiment, the open / closed state of the cartridge chamber lid 4 is detected by the cartridge lid opening / closing detection switch 16 which is turned on / off according to the position of the key plate 8 which is interlocked with the opening / closing operation of the cartridge chamber lid 4, and the liquid crystal The information is displayed on the display device 17. Therefore, for example, even when the cartridge chamber lid 4 may not be completely closed,
The LCD 17 allows the photographer to easily visually recognize the open / closed state.

Second Embodiment In the above-described first embodiment, as a method of displaying whether or not the cartridge chamber lid 4 is completely closed, the cartridge lid opening / closing detection switch 16 detects and the LCD 17 displays. However, in the present embodiment, the open / closed state of the cartridge chamber lid 4 is displayed without using a display device such as the LCD 17. FIG. 15 is a side view of the camera of the present embodiment and shows a part of the cartridge chamber opening / closing mechanism 3. The structure of the cartridge chamber opening / closing mechanism 3 is the first
This is the same as the embodiment. Holes 1c and 1d penetrating the cover 1 are formed on the side surface of the cover 1, and the operation portion 7a of the operation plate 7 projects to the outside of the cover 1 through the hole 1d.

In FIG. 15, the operation plate 7 and the key plate 8
In the position shown by the solid line, the cartridge chamber lid 4 is completely closed (see FIG. 5), and in the position shown by the alternate long and short dash line, it is not completely closed (see FIG. 8). When the cartridge chamber lid 4 is completely closed, the lock plate 8 can be seen through the hole 1c, and when it is not completely closed, the lock plate 8 cannot be seen. Will be visible. Therefore, it is possible to confirm whether or not the cartridge chamber lid 4 is completely closed depending on whether or not the lock plate 8 is visible over the entire hole 1c.

In the second embodiment, it is not necessary to provide the liquid crystal display device 17 for checking the open / closed state as in the first embodiment, so that the cartridge chamber lid 4 of the cartridge chamber lid 4 can be suppressed while suppressing an increase in cost. It is possible to provide a camera capable of easily checking the open / closed state. In the embodiment described above,
The key board 8 is made visible through the hole 1c.
However, it is not limited to this, as long as it is linked with the opening / closing operation of the cartridge chamber cover 4, and for example, the protrusion 4 of the cartridge chamber cover 4
A hole 1c may be provided at the position of c so that the protrusion 4c can be visually recognized.

In addition to the above-described embodiment, as the notification means, for example, the open / closed status is notified by turning on / off the LED, an alarm sound is generated by a buzzer, and the cartridge chamber lid 4 is open. This may be notified by voice. Further, in the first embodiment, the display unit 17a
Although the notification is made by changing the display mark of, the display mark may be blinked.

In the correspondence between the embodiment of the invention described above and the claims, the cartridge lid open / closed detection switch 16 is a detection device, the control circuit 30 is a display control means, the key plate 8 is a member, and The liquid crystal display device 17, the control circuit 30, the cartridge lid open / closed detection switch 16 in the second embodiment, and the lock plate 8 and the hole 1c in the second embodiment respectively constitute notification means.

[0030]

As described above, according to the present invention,
Since the opening / closing state of the cartridge chamber lid is notified by the notifying means, the opening / closing state of the cartridge chamber lid can be easily confirmed without directly checking the cartridge chamber lid portion. Therefore, the problem that light enters the film surface can be reduced. In particular, according to the third aspect of the invention, since the opening / closing state of the cartridge chamber lid is known by seeing the member interlocking with the opening / closing of the cartridge chamber lid through the hole provided in the cover, the cost due to the provision of the notifying means Can be reduced.

[Brief description of drawings]

FIG. 1 is a diagram showing a first embodiment of a camera according to the present invention.

FIG. 2 is a plan view of the camera shown in FIG.

FIG. 3 is a diagram for explaining the liquid crystal display device 17 and shows a display when the cartridge chamber lid 4 is in a closed state.

FIG. 4 is a view showing details of a cartridge lid opening / closing mechanism portion.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6 is a sectional view taken along line BB of FIG. 4;

7 is a view for explaining the opening operation of the cartridge chamber lid 4, which is a view in which the operation plate 7 is rotated counterclockwise from the state of FIG.

FIG. 8 is a view for explaining the opening operation of the cartridge chamber lid 4, which is a view obtained by further rotating the operation plate 7 from the state of FIG. 7.

9 is a front view of the cartridge opening / closing mechanism portion in the state of FIG.

FIG. 10 is a view showing the liquid crystal display device 17, showing a display when the cartridge chamber lid 4 is in an open state.

FIG. 11 is a view for explaining the opening operation of the cartridge chamber lid 4, which is a view obtained by further rotating the operation plate 7 from the state of FIG.

12 is a front view of the cartridge opening / closing mechanism portion in the state of FIG. 11. FIG.

FIG. 13 is a view for explaining the closing operation of the cartridge chamber cover 4.

FIG. 14 is a view for explaining the closing operation of the cartridge chamber lid 4, showing the operation of the light-shielding interlocking plate 11 portion.

FIG. 15 is a diagram showing a second embodiment according to the present invention.

[Explanation of symbols]

 1 Cover 3 Cartridge Lid Opening / Closing Mechanism 4 Cartridge Chamber Lid 5 Cartridge Chamber 7 Operating Plate 8 Lock Plate 9 Auxiliary Member 10, 12, 14 Spring 11 Light-shielding Interlocking Plate 13 Locking Part 15 Light-shielding Door Fork 16 Cartridge Lid Opening / closing Switch 17 Liquid Crystal Display Device (LCD) 20 Film cartridge 30 Control circuit

Claims (4)

[Claims] 1. A camera comprising a cartridge chamber for accommodating a film cartridge and a cartridge chamber cover for shielding the cartridge chamber from light, comprising a notifying unit for notifying an open / closed state of the cartridge chamber cover. 2. The camera according to claim 1, wherein the notifying unit includes a display device, a detection device that detects an open / closed state of the cartridge chamber cover, and the cartridge chamber cover according to a detection output of the detection device. A display control means for displaying the open / closed state of the display device on the display device. 3. The camera according to claim 1, wherein the notifying unit has a through-hole formed in a cover of the camera, and a visual form that is interlocked with opening and closing of the cartridge chamber lid and is visible through the hole. A camera comprising: a member that differs depending on whether the cartridge chamber lid is open or closed. 4. The camera according to claim 1, wherein the cartridge chamber has a structure for loading and storing the film cartridge in an axial direction thereof.