JP2001356398A - Film driving device for camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a film driving device for a camera capable of loading a film with an easy operation, and also, with no problem on light-shielding. SOLUTION: The device is provided with a camera main body 103, a cartridge storing chamber (rear cover) 105 for storing the cartridge 120 from the axial direction of a spool rotating shaft (driving shaft 205) in an open state and which is turned together with the cartridge 120 on the back of the camera main body 103 and stored in the camera main body 103 in a closed state, and a driving mechanism (a film driving motor 508, a sun gear 300 and a planetary gear 301) for rotary-driving the spool rotating shaft (driving shaft 205) of the cartridge 120 when the cartridge storing chamber (rear cover) 105 is in the open state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a film driving device for a camera.

[0002]

2. Description of the Related Art A camera having a film winding and rewinding mechanism capable of automatically winding and rewinding a film and loading a film by a film cartridge has been conventionally known. For example, Japanese Patent Application Laid-Open No. 62-21
Japanese Patent No. 5256 discloses a camera capable of loading a film at the time of loading the film into the camera and after loading the film without having to worry about the length of the film leader portion exposed from the film cartridge. .

Further, Japanese Utility Model Laid-Open No. 57-195126 discloses a camera in which the shape of a guide bar for a film leader is improved.

[0004]

However, in the camera described in JP-A-62-215256, it is necessary to load the film cartridge obliquely, so that it is difficult to operate the camera and it is difficult to shield the film leader from light. There is a problem.

[0005] The above-mentioned Japanese Utility Model Application Laid-Open No.
In the camera described in Japanese Patent Application Laid-Open Publication No. H11-264, it is necessary to extend the leader portion of the film and insert the film through a thin slit portion, so that the operation is troublesome.

The present invention has been made in view of such problems, and an object of the present invention is to provide a film driving apparatus for a camera which can load a film with a simple operation and has no problem of shading. It is in.

[0007]

In order to achieve the above object, a camera film driving apparatus according to a first aspect of the present invention comprises:
A camera body, a patrone stored in an axial direction of a spool rotating shaft in an open state, a rear lid which is rotated together with the patrone at the back of the camera body and is housed in the camera body to be in a closed state; and A drive mechanism for rotating the spool rotation shaft of the patrone when the lid is open.

A film drive device for a camera according to a second aspect of the present invention accommodates a camera body and a patrone in an open state from the axial direction of a spool rotating shaft, and rotates together with the patrone on the back surface of the camera body. A rear lid that is housed in the camera body to be closed, a drive mechanism that rotationally drives the spool rotation shaft of the patrone with the rear lid open, and a drive mechanism that is provided on the rear lid and is mounted on the rear lid. A film detection switch for detecting a film exposed to the outside of the patrone, and an output of the film detection switch, driving the drive mechanism to drive the film exposed to the outside of the patrone to the patrone. Control means for rewinding inside.

In a third aspect of the present invention, a film drive device for a camera houses a camera body and a patrone in an open state from an axial direction of a spool rotating shaft, and rotates together with the patrone on the back surface of the camera body. A rear lid that is housed in the camera body to be closed, a drive mechanism that rotationally drives the spool rotation shaft of the patrone with the rear lid open, and a drive mechanism that is provided on the rear lid and is mounted on the rear lid. A film detection switch for detecting a film exposed to the outside of the patrone, a rear cover close detection switch provided on the camera body and detecting that the rear lid is in a closed state, and a film detection switch. Receiving the output,
By driving the drive mechanism, the film exposed outside the patrone is rewound leaving a predetermined amount outside the patrone, and the film left outside the patrone is received by receiving the output of the rear lid closing detection switch. Control means for winding up.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an external perspective view of a camera to which the present invention is applied, and shows a view from the back. An LCD window 10 is provided at the center of the upper surface of the camera body 103.
1 and a mode button 100 are provided, and a release button 102 is provided on the right side thereof. On the back of the camera body 103, an eyepiece window 104 and a patrone storage room 105 as a rear lid are provided.

FIG. 2 is a functional block diagram for realizing the camera operation of this embodiment. The CPU 503 as control means for controlling the entire camera includes a photometric unit 500, a distance measuring unit 501, a release SW 504, a shutter driving unit 5
05, a lens driving unit 506 is connected, and a film driving motor 508 is connected via a motor driver 507. Further, the CPU 503 includes a film SW (film detection switch) 163 and a cartridge S.
A W (rear lid close detection switch) 203 and a perforation detection unit 509 are connected, and their detailed operations will be described later.

FIG. 3 shows a state in which the patrone storage chamber 105 of the camera main body 103 is rotated to a position protruding from the camera main body 103 to be opened, and the remaining end of the film (here, 35 mm film) 162 is protruded. The so-called 135 format patrone (hereinafter simply referred to as patrone) 120 in which the parts are housed inside is
That is, it is a diagram showing a state when the cartridge is housed in the cartridge housing chamber 105 from an axial direction of a drive shaft described later. 220
Is an opening (rear lid storage chamber) for storing the patrone storage chamber 105. Reference numeral 164 denotes a blocking portion of a blocking lever described later.

FIG. 4 is a sectional view when FIG. 3 is viewed from above. As shown in FIG. 4, the patrone storage chamber 105 that is rotatable around a rotation shaft 207 provided in a part of the camera exterior 200 is in an open state protruding from the camera body 103, and is in an open state. Patrone 1
20 is loaded, and the leading end of the film 162 extends from the patrone 120 to the outside of the patrone storage chamber 105 beyond the protrusion 165 of the blocking lever described later. By driving the drive shaft 205 as a spool rotation shaft, the film 162 can be wound up and rewound.

An opening 220 is formed along the camera main body 204, and around the opening 220, a patrone SW 203 and a sprocket 201 each composed of two sections are provided.
Etc. are provided. 202 is a film passage and 2
Reference numeral 06 denotes a communication flexible board for guiding a lead wire of a film SW described later into the camera.

FIG. 5 is a sectional view taken along the line CC of FIG. In the state where the patrone 120 is stored in the patrone storage chamber 105, the protruding portion 165 of the blocking lever 160 is pushed by the interposition of the film 162.
When the section 60 is rotated clockwise and the section 163-1 of the film SW 163 is pressed, the two sections 163-1 and 163-2 of the film SW 163 come into contact with each other and conduct to turn on the film SW 163. Thus, the loading of the cartridge 120 can be detected.

In this state, the patrone storage room 105
Even if it is attempted to store the patrone storage chamber 105 in the camera body 103, the blocking portion 164 of the blocking lever 160 projects from the bottom of the patrone storage chamber 105 as shown in FIG. Even if it is attempted, the protruding portion abuts on the camera body 103 and cannot be stored. As described above, the blocking unit 164 functions as a prohibition unit that prohibits the patrone storage chamber 105 from being stored in the camera body 103.

After the loading of the patrone 120 is detected in this way, when the film 162 is rewound into the patrone 120 by a predetermined amount, the projecting portion 165 causes the film 162 to move.
As a result, the blocking lever 160 is rotated counterclockwise by the urging force of the spring 161. As a result, the section 163-1 is returned to the original position as shown in FIG. 6, and the contact with the section 163-2 is released. Also,
In this state, as shown in FIG. 6, the blocking portion 164 does not protrude from the bottom surface of the cartridge storage chamber 105.
The patrone storage room 105 can be stored in the camera body 103.

FIG. 7 shows that the film 162 is
It is a figure which shows the state where it was rewound to within the protrusion part 165 of FIG.

FIG. 8 is a view showing a closed state in which the patrone storage chamber 105 is stored in the camera body 103 after the film 162 is rewound by a predetermined amount by the above-described method. In this state, when one of the sections of the patrone SW 203 is pressed by the peripheral wall of the patrone storage chamber 105, the two sections are released from contact, and the patrone SW 203 is turned off. Further, the sprocket 201 is engaged with the perforation of the film 162.

When the cartridge SW 203 is in the OFF state, the CP
When U503 is notified, the sprocket 201 is driven clockwise by the film driving motor 508 via the motor driver 507, and the film 162 can be automatically loaded.

FIG. 9 is a flowchart for explaining the details of the auto load operation. First, in step S1, it is determined whether or not the cartridge SW 203 is ON. If the patrone storage chamber 105 is located at a position protruding from the camera body 103, the patrone SW 203 is turned on. Therefore, the process proceeds to step S2 to determine whether or not the film SW 163 is turned on. When the patrone 120 is stored in the patrone storage room 105, the film SW 163 is turned off.
In step S3, the film driving motor 508 is driven in the rewind direction to rewind the film 162 by a predetermined amount until the film 162 is within the protruding portion 165 of the blocking lever 160.

FIG. 10A is a diagram for explaining the movement of gears linked to the film driving motor 508 during the above-mentioned film rewinding. In response to the detection of the loading of the cartridge 120, the motor 508 for driving the film is driven.
Is driven in the rewind direction to rotate the sun gear 300 in the counterclockwise direction, the planetary gear 301 rotates clockwise (self-rotation) and revolves from the position shown by the broken line to the position shown by the solid line in the figure. The clockwise rotation of the planetary gear 301 rotates the drive shaft 205 of the patrone storage chamber 105 counterclockwise to rewind the film.

Next, the process proceeds to step S4, where it is determined whether or not the film SW 163 is turned off by the rewinding operation. When it is confirmed that the film is turned off, the process proceeds to step S5, in which the film driving motor 508 is switched, and the film driving motor 508 is driven in the winding direction for a predetermined time. As a result, the sun gear 300 is driven clockwise, so that the planetary gear 301 is released and returns to the original position (FIG. 10B).

Next, the process proceeds to step S6, where the cartridge SW is set.
It is determined whether 203 has been turned off. When the patrone storage chamber 105 is stored in the camera body 103, the patrone SW 203 is turned off, so that the process proceeds to step S7, in which the film drive motor 508 drives the sprocket 201 to start feeding the film 162. At this time, the number of perforations is counted while detecting the perforation of the film 162 by the perforation detecting means 509, and it is determined whether or not the count value has reached a predetermined number N (step S8). Here, as the predetermined number N, for example, N = 32 is used as a number that can reliably take up the film 162. In addition, the perforation detection means 509 is
The number of perforations may be counted by means of counting perforations by interlocking with the rotation of, or by arranging a photo interrupter in the film path 202, for example.

When the number of perforations reaches a predetermined number N, the autoloading operation ends.

According to the above-described embodiment, it is possible to provide a film drive device for a camera that can load a film with a simple operation and has no problem of light blocking.

The gist of the film driving device described above is summarized as follows.

1. The film drive device of the camera stores the camera body 103 and the patrone 120 in the open state from the axial direction of the spool rotation shaft (drive shaft 205), and rotates the camera with the patrone 120 on the back surface of the camera body 103. A rear lid (patrone storage chamber 105) housed in the main body 103 and closed, and a spool rotation shaft (drive shaft 205) of the patrone 120 is rotationally driven with the rear lid (patrone storage chamber 105) opened. A drive mechanism (film drive motor 508, sun gear 300, planetary gear 301) is provided.

2. The film drive device of the camera stores the camera body 103 and the patrone 120 in the open state from the axial direction of the spool rotation shaft (drive shaft 205), and rotates the camera with the patrone 120 on the back surface of the camera body 103. A rear lid (patrone storage chamber 105) housed in the main body 103 and closed, and a spool rotation shaft (drive shaft 205) of the patrone 120 is rotationally driven with the rear lid (patrone storage chamber 105) opened. Drive mechanism (film drive motor 508, sun gear 300, planetary gear 301) and the rear lid (patrone storage chamber 105)
And a film detection switch (film SW163) for detecting a film 162 exposed to the outside of the patrone 120 loaded in the rear lid (patrone storage chamber 105), and a film detection switch (film SW163). In response to the output, the drive mechanism (film drive motor 508, sun gear 300, planetary gear 3
01), and a control means (CPU 503) for rewinding the film 162 exposed outside the cartridge 120 into the cartridge 120.

3. The film drive device of the camera stores the camera body 103 and the patrone 120 in the open state from the axial direction of the spool rotation shaft (drive shaft 205), and rotates the camera with the patrone 120 on the back surface of the camera body 103. A rear lid (patrone storage chamber 105) housed in the main body 103 and closed, and a spool rotation shaft (drive shaft 205) of the patrone 120 is rotationally driven with the rear lid (patrone storage chamber 105) opened. Drive mechanism (film drive motor 508, sun gear 300, planetary gear 301) and the rear lid (patrone storage chamber 105)
A film detection switch (film SW 163) for detecting the film 162 exposed to the outside of the patrone 120 loaded in the rear lid (patrone storage chamber 105); The drive mechanism (motor for driving a film) receives the output of a rear cover close detection switch (patrone SW203) for detecting that the rear lid (patrone storage chamber 105) is closed and the output of the film detection switch (film SW163). 508, sun gear 300, planet gear 30
1) is driven to rewind the film 162 exposed to the outside of the patrone 120, leaving a predetermined amount outside the patrone 120, and receiving the output of the rear lid close detection switch (patrone SW203) to receive the film. And control means (CPU 503) for winding up the film 162 left outside the film 120.

4. The film drive device of the camera stores the camera body 103 and the patrone 120 in the open state from the axial direction of the spool rotation shaft (drive shaft 205), and rotates the camera with the patrone 120 on the back surface of the camera body 103. A rear lid (patrone storage chamber 105) that is housed in the main body 103 and is in a closed state;
3 and the rear lid (patrone storage room 105)
And a drive mechanism (film drive motor) for rotating the spool rotation shaft (drive shaft 205) of the patrone 120 when the back cover (patrone storage room 105) is open. 508, sun gear 3
00, the planetary gear 301) and the rear lid (patrone storage chamber 105).
05), the output of the film detection switch (film SW 163) for detecting the film 162 exposed to the outside of the patrone 120 and the output of the film detection switch (film SW 163). Motor 508, sun gear 300,
And a control means (CPU 503) for driving the planetary gear 301) to roll back the film 162 exposed to the outside of the patrone 120 into the patrone 120.

5.2. To 4. In any one of the above, upon detecting that a predetermined amount or more of the film 162 is exposed from the loaded patrone 120, the rear lid (patrone storage chamber 105) moves the rear lid (patrone storage chamber 105) to the above position. Prohibiting means for prohibiting being housed in the camera body 103 (the blocking portion 1 of the blocking lever 160)
64).

6. The film drive device of the camera stores the camera body 103 and the patrone 120 in the open state from the axial direction of the spool rotation shaft (drive shaft 205), and rotates the camera with the patrone 120 on the back surface of the camera body 103. A rear lid (patrone storage chamber 105) housed in the main body 103 and closed, and the patrone 120 provided in the rear lid (patrone storage chamber 105) and loaded in the rear lid (patrone storage chamber 105). Film detecting means (film SW 163) for mechanically detecting the film 162 exposed to the outside of the camera, and the film detecting means (film SW 163) includes the cartridge 1
Prohibiting means (preventing lever 16) for prohibiting (preventing) the rear cover (patrone storage chamber 105) from shifting to the closed state when detecting the film 162 exposed to the outside of the apparatus 20;
0 blocking section 164).

[0034]

According to the present invention, it is possible to provide a film driving apparatus for a camera which can load a film by a simple operation and has no problem of shading.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a camera to which the present invention is applied.

FIG. 2 is a functional block diagram for realizing the camera operation of the embodiment.

FIG. 3 is a view showing a state in which a patrone is loaded into a patrone storage chamber.

FIG. 4 is a sectional view when FIG. 3 is viewed from above.

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

FIG. 6 rewinds the film by a predetermined amount and sets the film SW to O
It is a figure showing the state where it made FF.

FIG. 7 is a view showing a state in which the film has been rewound to within the protruding portion of the blocking lever.

FIG. 8 is a diagram showing a state in which the patrone storage room is stored in the camera body.

FIG. 9 is a flowchart showing details of an auto load operation.

FIG. 10 is a diagram for explaining the movement of a gear driven during an auto load operation.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 mode button 101 LCD window 102 release button 103 camera body 104 eyepiece window 105 patrone storage room (rear lid) 120 patrone 160 blocking lever 161 spring 162 film 163 film SW (film detection SW) 164 blocking portion of blocking lever 160 165 blocking lever 160 projecting portion 166 rotating shaft 200 camera exterior 201 sprocket 202 film passage 203 patrone SW (rear lid closing detection switch) 204 main body in camera 205 driving shaft 206 communication flexible substrate 207 rotating shaft 220 opening 300 sun gear 301 planet Gear 500 Photometry section 501 Distance measurement section 503 CPU (control means) 504 Release SW 505 Shutter drive section 506 Lens drive section 507 Motor driver 508 For film drive Over data 509 perforation detection means

Claims (3)

[Claims] 1. A camera body, wherein a patrone is housed in an open state from the axial direction of a spool rotating shaft, and is rotated together with the patrone at the back of the camera body to be housed in the camera body and closed. A film drive device for a camera, comprising: a lid; and a drive mechanism that rotationally drives a spool rotation shaft of the patrone when the rear lid is open. 2. A camera body and a patrone stored in an open state in an axial direction of a spool rotating shaft, and after being rotated together with the patrone on a back surface of the camera body to be housed in the camera body and closed. A cover, a drive mechanism for rotating and driving a spool rotation shaft of the patrone when the back cover is open, and detecting a film provided on the back cover and exposed to the outside of the patrone loaded in the back cover. Control means for receiving the output of the film detection switch and driving the drive mechanism to rewind the film exposed outside the cartridge into the cartridge. Camera film drive. 3. A camera body and, after the patrone is stored in an open state in the axial direction of a spool rotating shaft, after being rotated together with the patrone at the back of the camera body and stored in the camera body to be in a closed state. A cover, a drive mechanism for rotating and driving a spool rotation shaft of the patrone when the back cover is open, and detecting a film provided on the back cover and exposed to the outside of the patrone loaded in the back cover. A film detection switch provided on the camera body, a rear lid closing detection switch for detecting that the rear lid is in a closed state, and receiving an output of the film detection switch to drive the drive mechanism to drive the driving mechanism. The film exposed to the outside of the patrone is rewound while leaving a predetermined amount outside the patrone. Camera film drive apparatus characterized by comprising Ne and a control means for winding the film left outside the.