JP2003215678A - Camera - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To save space so as to accelerate miniaturization and to realize sure operation control. <P>SOLUTION: A leaf spring 34 is arranged in the revolution locus of the planet gear 30 of a planet gear clutch mechanism 29 for driving and winding film to a spool 26 by selectively driving and controlling a winding driving unit 23, and a projection part for regulation 33 is provided corresponding to the release position of an arm member 32 coupling the gear 30 and a sun gear 31 so as to revolve. In a state where the gear 30 is revolved to a release position, the locking part 341 of the spring 34 is elastically engaged with the tooth part of the gear 30 and also the side part of the member 32 is made to abut on the projection part 33. Then, the rotating force of the gear 30 is changed to revolving force, and the energizing force of the spring 34 is imparted to the gear 30 by utilizing the revolving force, whereby the member 32 is made to press-contact with the projection part 33 so as to be positionally regulated to the release position. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera having various camera driving mechanisms such as a film winding mechanism for automatically loading a film on a spool.

[0002]

2. Description of the Related Art Generally, a film feeding device provided in a camera automatically loads a film of a film cartridge onto a spool when the film cartridge is housed in a film housing portion. Such a film feeding device is arranged on the revolution path of the planetary gear, using a planetary gear clutch mechanism including, for example, a sun gear driven by a motor and a planetary gear that meshes with the sun gear. The position where the planet gear is meshed with the driven gear for winding and the film is wound and fed, and the position where the planet gear is separated when the film is rewound by another driving means are selectively To drive.

That is, when the motor is rotationally driven in the first direction, the planetary gears that constitute the planetary gear clutch mechanism are in the first direction.
The gears are revolved in the direction to mesh with the driven gear for winding, the driven gear for winding is rotationally driven to rotate the spool, and film winding and feeding is executed. When the motor is reversed and rotationally driven in the second direction, the motor is reversed and revolved in the second direction so that the planetary gear is separated from the driven gear for winding, and another The rewinding means rewinds and feeds the film wound on the spool to the film cartridge.

By the way, in such a planetary gear clutch mechanism, the planetary gear, which is stationary in a state of being separated from the driven gear, meshes with the driven gear due to an external impact or the like. In order to prevent a malfunction that occurs, a fixed gear is arranged at a separated position of the planetary gears, and the separated planetary gears are meshed with the fixed gears, so that reliable operation control is performed.

However, in the above-mentioned planetary gear clutch mechanism, it is difficult to realize a highly accurate switching operation unless the switching angle of the planetary gears is sufficiently taken because of its structure.
It requires a sufficient space for disposing the fixed gear, which is disadvantageous in that it becomes large.

Such a situation is not limited to the planetary gear clutch mechanism for controlling the operation of the film winding mechanism,
The same applies to the planetary gear clutch mechanism that controls the operation of a camera driving mechanism such as a film rewinding mechanism for rewinding the film wound on the spool into the film cartridge.

[0007]

As described above, in the conventional camera, if the operation control of the planetary gear clutch mechanism is ensured, the camera becomes large in size.

The present invention has been made in view of the above circumstances, and provides a camera having a simple structure, capable of promoting miniaturization without taking up space and realizing reliable operation control. The purpose is to provide.

[0009]

SUMMARY OF THE INVENTION According to the present invention, there is provided a transmission position for engaging the camera drive mechanism to transmit the driving force of the motor by the rotation of the motor in the first direction, and the rotation of the motor in the second direction. A release position for separating transmission from the camera mechanism section and releasing transmission, a planetary gear clutch mechanism having a planetary gear that can move between them, and the planetary gear clutch mechanism being arranged in a revolution path of a planetary gear of the planetary gear clutch mechanism, A restricting member for restricting the revolution of the planetary gear due to the rotation of the motor in the second direction at the release position, and a planetary gear revolution mechanism of the planetary gear clutch mechanism are disposed so as to be engageable with the planetary gear. The planetary gear clutch mechanism so that the planetary gear clutch mechanism does not move from the release position in a state where the rotation of the motor is stopped at the release position.
According to the above configuration in which the camera is configured to include the elastic member that biases the regulating member in the direction of abutting, the rotation force of the planetary gear that is revolved by the elastic member that is arranged within the revolution path of the planetary gear. Is converted into an orbital force, and the orbital force is used to press the planetary gear clutch mechanism into pressure contact with the regulating member, whereby the regulating member and the elastic member cooperate to regulate the position of the planetary gear clutch mechanism to the release position. ing.

Therefore, it is possible to surely prevent the malfunction of the planetary gear due to an external impact while keeping the switching angle of the planetary gear to a minimum, and to promote miniaturization as much as possible.

Further, the camera of the present invention has a first motor.
A transmission position that meshes with the camera driving mechanism to transmit the driving force of the motor by rotation in the second direction, and a release position that releases the transmission by separating from the camera driving mechanism by rotating the motor in the second direction. A planetary gear clutch mechanism having a planetary gear that is movable between the planetary gear clutch mechanism and a planetary gear revolution mechanism of the planetary gear clutch mechanism. The planetary gear clutch mechanism is arranged so as to be engageable with the planetary gear in the revolution path of the planetary gear clutch mechanism and the planetary gear clutch mechanism, and the planetary gear clutch mechanism is rotated by the rotation of the motor in the second direction. An elastic member that elastically deforms while engaging with the planetary gear to allow the planetary gear to revolve to the release position when revolving to the release position. Planetary gear pitch mechanism, in the state where the rotation of the motor reached the release position is stopped, by the above regulating member and the elastic member configured to be locked in the release position.

According to the above construction, the elastic member arranged in the revolution path of the planetary gear converts the rotation force of the revolving planetary gear into a revolution force, and the revolution force is utilized to make the planetary gear clutch mechanism. By pressing the
The restriction member and the elastic member cooperate to restrict the position of the planetary gear clutch mechanism to the release position.

Since the elastic member is used,
Even after the planetary gear clutch mechanism is in pressure contact with the restriction member, the planetary gear can rotate while bending the elastic member so that the elastic member escapes at its teeth. You can surely move to the release position.

Therefore, it is possible to surely prevent the malfunction of the planetary gears due to an external impact while keeping the switching angle of the planetary gears to a minimum, and to promote miniaturization as much as possible.

Further, according to the present invention, the elastic member is composed of a leaf spring which engages with the tooth portion of the planetary gear. According to this, it is possible to realize a simple assembling arrangement and to simplify the configuration.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 shows a schematic structure of a camera to which an embodiment of the present invention is applied. A camera body 10 is assembled with a mirror box 11 corresponding to an aperture (not shown) at a substantially central portion thereof. Attached to this mirror box 1
An image pickup lens barrel (not shown) is disposed on the front surface of 1. Further, in the camera body 10, a cartridge chamber 12 and a battery chamber 13 are arranged on the left side of the mirror box 11, and a spool chamber 14 is arranged on the right side of the mirror box 11.

Further, a camera drive mechanism mount 15 is attached to the lower end of the camera body 10. The camera drive mechanism mount 15 has a mirror
The shutter drive unit 16 is attached to this mirror
The shutter drive unit 16 is provided with a first motor 19 for film rewinding / feeding / mirror / shutter drive via a deceleration transmission mechanism 17 and a planetary gear clutch mechanism 18 so that rotational force can be transmitted. The first motor 19 is electrically connected via a connection terminal 191 to a motor control circuit 40 that constitutes a camera drive control system, which will be described later, shown in FIG.

The mirror / shutter drive unit 16 contains a mirror drive mechanism 8 and a shutter charge mechanism 9 (see FIG. 2). In the mirror drive mechanism 8 and the shutter charge mechanism 9, the rotational force of the first motor 19 causes the deceleration transmission mechanism 17 and the planetary gear clutch mechanism 1 to operate.
It is connected via 8 so that the rotational force can be transmitted.

A main mirror 20 and a focal plane shutter 21 are attached to the mirror box 11. Of these, the main mirror 20 is connected to a mirror drive lever 81 of a mirror drive mechanism 8 incorporated in the mirror / shutter drive unit 16. The other focal plane shutter 21 is connected to the shutter charge mechanism 9 incorporated in the mirror / shutter drive unit 16.

A film rewinding mechanism 22 is provided on the camera drive mechanism mount 15 in correspondence with the first motor 19. This film rewinding mechanism 22
The rotational force of the first motor 19 causes the deceleration transmission mechanism 1 to rotate.
7 and the planetary gear clutch mechanism 18, and is connected to the rewinding gear 221 so as to be able to transmit a rotational force.
Fork gear 222 is meshed with 1. The fork gear 222 is provided with a fork portion 223, and the fork portion 223 is engaged with a winding portion of a film cartridge (not shown) housed in the cartridge chamber 12 so as to be able to transmit a rotational force.

Further, the winding drive unit 23 and the second motor 24 for winding the film are provided in the camera body 10.
Is arranged corresponding to the spool chamber 14. The second motor 24 is attached to a unit case 25 as a base that constitutes the hoisting drive unit 23 as shown in FIG.
A spool 26 for film winding is rotatably mounted around the second motor 24 and accommodated in the spool chamber 14 of the camera body 10. The connection terminal 241 of the second motor 24 is electrically connected to the motor control circuit 40 shown in FIG.

A winding gear 261 is provided at the base end of the spool 26, and the winding gear 261 is shown in FIG.
Further, as shown in FIG. 5, it is meshed with the small gear portion 271 of the first winding gear 27 that constitutes the driven gear rotatably arranged in the unit case 25. The first hoisting gear 27 is provided with a large gear part 272 integrally with the small gear part 271, and the large gear part 272 is a second hoisting member rotatably arranged in the unit case 25. The small gear portion 281 of the gear 28 is meshed with the gear 28. The second winding gear 28 is provided with a large gear portion 282 integrally with the small gear portion 281, and a planetary gear 30 constituting a planetary gear clutch mechanism 29 transmits a rotational force to the large gear portion 282. Interlock selectively as much as possible.

The planetary gear 30 is the unit case 25 described above.
A small gear portion 311 of the sun gear 31 rotatably disposed in the
Is meshed with. The sun gear 31 includes the pinion portion 311 described above.
The large gear part 312 is provided integrally with the large gear part 3
12 is meshed with the pinion 241 of the second motor 24 (see FIG. 5). The planetary gear 30 is rotatably connected to the sun gear 31 via an arm member 32.

With the above structure, when the planetary gear 30 is rotationally driven in one direction, which is the first direction, by the second motor 24, and the sun gear 31 is rotated counterclockwise in FIG. As shown in FIG. 5, the arm member 32 is revolved counterclockwise and guided to a transmission position where it meshes with the large gear portion 282 of the second winding gear 28. And the planetary gear 30
When the second motor 24 is reversed and driven to rotate in the second direction, and the sun gear 31 is rotated clockwise in FIG. The winding gear 28 is guided to a release position separated from the large gear 282 (see FIG. 5).

Further, the unit case 25 is provided with a protrusion 33 which is a restriction member corresponding to the arm member 32 at the release position of the planetary gear 30, and a leaf spring 34 which is an elastic member of the planetary gear 30. It is provided corresponding to the tooth portion.

The leaf spring 34 is provided with, for example, an elastic locking portion 341 at the bent end portion thereof in correspondence with the tooth portion of the planetary gear 30, and a mounting portion 342 at the base end thereof as a unit. It is provided corresponding to the mounting surface of the case 25. A boss hole 343 is provided at a substantially central portion of the mounting portion 342 so as to correspond to the boss 251 of the unit case 25, and a pair of mounting holes (not shown for convenience of illustration) sandwiching the boss hole 343. Are provided corresponding to the pair of positioning bosses 252 of the unit case 25. The leaf spring 34 is positioned on the unit case 25 by the positioning boss 252.

The leaf spring 34 has a boss hole 343.
The boss 251 of the unit case 25 is inserted into the
With the mounting projection 252 inserted in the mounting hole (not shown), the locking portion 341 is mounted and arranged on the revolution locus of the planetary gear 30 in the unit case 25. Accordingly, in the leaf spring 34, when the planetary gear 30 reaches the release position (see FIG. 5), the locking portion 341 thereof is elastically engaged with the tooth portion of the planetary gear 30. At the same time, the planetary gear 30
The side portion of the arm member 32 that supports the unit is abutted against the protrusion 33 of the unit case 25.

Thus, when the planetary gear 30 is revolved from the transmission position shown in FIG. 6 to the release position shown in FIG.
On the way, the tooth portion of the planetary gear 30 starts to elastically engage with the locking portion 341 of the leaf spring 34, and the rotation force of the planetary gear 30 causes the leaf spring 34 to rotate.
It is converted into revolution force by and tries to continue revolution. Then, when the arm member 32 revolves slightly, the side portion of the arm member 32 comes into contact with the protruding portion 33 of the unit case 25. Here, the arm member 32 is positionally regulated to the release position while being pressed against the protrusion 33 of the unit case 25 by the urging force of the leaf spring 34. Further, by being composed of the leaf spring 34, it is possible to rotate the planetary gear 30 even when the planetary gear 30 is positionally restricted to the release position. As a result, the planetary gear 3
0 and the arm member 32 can be reliably moved from the transmission position to the release position, and even if an impact or the like is given from the outside, the biasing force of the leaf spring 34 does not displace the transmission position to the release position. Can hold position.

Further, in the leaf spring 34, in the release position, the second motor 24 is rotationally driven in the first direction, the sun gear 31 is rotated counterclockwise in FIG. 5, and the planetary gear 30 is moved to the arm. When it is revolved counterclockwise through the member 32, the revolving force disengages the locking portion 341 from the tooth portion of the planetary gear 30, and the large gear portion of the second winding gear 28 of the planetary gear 30. Revolution to a transmission position meshed with 282 is allowed.

Further, the large gear portion 31 of the sun gear 31
A gear portion (not shown) of a movement detection disk 36 for precisely detecting the amount of film movement is meshed with the well-known 1 in order to imprint a date during the film travel. A plurality of detection patterns 361 are provided at predetermined intervals on the movement detection disk 36, and a photo interrupter 37 is arranged in combination so as to sandwich the detection patterns 361.

The photo interrupter 37 is attached, for example, so as to sandwich the detection pattern 361 of the movement detection disk 36 on the lid 35 attached to the unit case 25. As a result, the photo interrupter 37 counts the detection patterns 361 as the movement detection disk 36 rotates and outputs the counts to the central processing unit (CPU) 42 that constitutes a camera drive control system, the details of which will be described later.

Here, regarding the camera drive control system,
Description will be made with reference to FIG. That is, to the CPU 42, the output end of the film movement detecting means 41 is connected to the first and second input ends thereof, and the third input end thereof is connected to the third input end thereof.
The output end of the film rewinding detection switch 44 is connected. Further, to the CPU 42, the output terminal of the position detecting means 45 for detecting the mirror / shutter position is connected to the fourth input terminal thereof, and the motor control circuit 40 is connected to the output terminal thereof.

The film movement detecting means 41 detects the movement amount of the film by a photo reflector (not shown),
The winding detection signal or the rewinding detection signal is sent to the CPU 4
Output to 2.

In the motor control circuit 40, the second motor 24 is connected to one output end thereof, and the first motor 29 is connected to the other output end thereof.
The first and second motors 19 and 24 are selectively driven and controlled in response to a drive signal from the motor 2 to perform film winding and film rewinding and feeding as described later.

Of these, the first motor 19 is connected to the planetary gear clutch mechanism 18 via the speed reduction transmission mechanism 17, and the planetary gear clutch mechanism 18 is connected in accordance with the rotation direction thereof.
Through the mirror / shutter drive unit 16, the shutter charge mechanism 9, the mirror drive mechanism 8 or the film rewind mechanism 22 is selectively connected to the mirror / shutter drive unit 16 so that the rotational force can be transmitted. As described above, the first motor 19 selectively drives either the shutter charge mechanism 9, the mirror drive mechanism 8 or the film rewind mechanism 22 via the planetary gear clutch mechanism 18 in accordance with the rotation direction thereof, The focal plane shutter 21 and the main mirror 20 are driven or the film is rewound and fed.

For example, when the shutter charge mechanism 9 and the mirror drive mechanism 8 of the mirror / shutter drive unit 16 are driven, the first motor 19 is rotationally driven in the direction opposite to that at the time of film rewinding. Then, the driving force is transmitted through the deceleration transmission mechanism 17 to the planetary gear clutch mechanism 1
8 and the planetary gear clutch mechanism 18 is
The focal plane shutter 21 and the main mirror 20 are connected to the shutter charge mechanism 9 and the mirror drive mechanism 8 of the shutter drive unit 16 so as to be able to transmit the driving force, and are moved and set to the photographing position. At this time, the positions of the focal plane shutter 21 and the main mirror 20 are detected by the position detecting means 45, and the detection information is the above C.
The first motor 1 is supplied by being supplied to the PU 42.
9 is driven and controlled via the motor control circuit 40 to be set at a desired position.

On the other hand, the second motor 24 is the CPU 4
Forward / reverse inversion drive control is performed in response to a drive signal from the camera 2 and the rotation drive in the first direction drives and controls the planetary gear clutch mechanism 29 as described above to selectively select the camera body 1.
0, the spool 26 in the spool chamber 14 is driven to rotate,
The film wound on the film cartridge (not shown) housed in the cartridge chamber 12 is wound up and fed to the spool 26.

In the second motor 24, for example, the film rewinding detection switch 44 detects the end of the film, and the detection signal is input to the CPU 42, and the CPU 4
When an inversion drive signal is input to the motor control circuit 40 from 2, it is inverted and rotationally driven in the second direction. Then, in the planetary gear clutch mechanism 29, the planetary gear 30 is revolved clockwise in FIG. 5, and is disengaged from the large gear portion 282 of the second winding gear 28 as shown in FIG. Is moved to the release position where it abuts the protrusion 33, and the driving of the second motor 24 is stopped.

Here, the engaging portion 341 of the leaf spring 34 is elastically engaged with the tooth portion of the planetary gear 30 as described above,
The rotation force is converted into the revolution force, and the leaf spring 34
The urging force of is urged toward the protrusion. As a result, the arm member 32 is positioned at the release position while being pressed against the protrusion 33 of the unit case 25 by the urging force of the leaf spring 34.

When the arm member 32 is driven by the second motor 24 to the release position where it is in contact with the protrusion 33,
The drive of the second motor 24 continues to rotate until the stop signal is output, and the planetary gear 30 is rotationally driven on the spot, but the planetary gear 30 allows the engaging portion 341 of the leaf spring 34 to escape at the tooth portion. It is possible to rotate while bending.

Next, the rewinding operation for rewinding and feeding the film to the film cartridge in the camera drive control system will be described.

For example, when the film is all wound up on the spool 26, the film rewinding detection switch 44 is turned on in step S1 as shown in FIG. Then, the detection signal of the film rewinding detection switch 44 is input to the CPU 42, and in response thereto, the CPU 42
Generates an inversion drive signal and outputs it to the motor control circuit 40.

Here, the second motor 24, which has been rotationally driven in the first direction to perform film winding and feeding, is reversed and rotationally driven in the second direction (step S2).
As a result, in the planetary gear clutch mechanism 29, the sun gear 31 is reversely driven, and the planetary gear 30 is revolved in the clockwise direction in the drawing from the transmission position, which is the film winding and feeding position, via the arm member 32. As a result, in the planetary gear clutch mechanism 29, the planetary gear 30 is separated from the large gear portion 282 of the second winding gear 28, and the arm member 32 is brought into contact with the protrusion 33 of the unit case 25 in the release position. Be moved to.

At the release position, the engaging portion 341 of the leaf spring 34 is elastically engaged with the tooth portion of the planetary gear 30.
Here, the planetary gear 30 has its locking force 341 elastically engaged with the teeth of the planetary gear 30 to convert its rotation force into an orbital force and urge it toward the protrusion. In this state, C
The PU 42 sends a stop signal to the motor control circuit 4 after a predetermined time.
0, and the driving of the second motor 24 is stopped (step S3). As a result, the planetary gear 30 is positioned at the release position in a state where the arm member 32 is pressed against the protrusion 33 of the unit case 25 by the urging force of the leaf spring 34 to be regulated in position.

Here, the CPU 42 outputs a rewinding drive signal to the motor control circuit 40 to rotationally drive the first motor 19 in accordance with the film rewinding and feeding mode. As a result, the rotational force of the first motor 19 is transmitted to the film rewinding mechanism 22 via the deceleration transmitting mechanism 17 and the planetary gear clutch mechanism 18 to be rotationally driven, and the film contained in the cartridge chamber 12 is then rotated. Film rewinding of the film to the cartridge is performed.

In the film rewinding state, the presence or absence of the film is detected by the film movement detecting means 41 (step S5), and the detection signal is input to the CPU 42. When it is determined in step S5 that there is a film detection signal, the CPU 42 returns to step S4 to drive and control the first motor 19 to continue the film rewinding and feeding.

When it is determined in step S5 that there is no detection signal, the process proceeds to step S6 and the CPU 4
2 generates a stop signal and outputs it to the motor control circuit 40. Here, the motor control circuit 40 stops the driving of the first motor 19 after a predetermined time has elapsed, and the film rewinding and feeding is completed.

The film rewinding / feeding is performed by the steps S1 to S8 even when the film rewinding operation unit (not shown) is selectively operated to turn on the film rewinding switch 44. , As well.

Further, in the film winding operation for winding and feeding the film wound on the film cartridge to the spool 26 of the spool chamber 14, the planetary gear clutch mechanism 18 of the rewinding system is driven and controlled so that the film rewinding mechanism 22 is operated. In the state where the drive path of No. 2 is disconnected, as described above, the planetary gear 30 of the planetary gear clutch mechanism 29 is rotated in the clockwise direction and meshed with the large gear portion 282 of the second winding gear 28 so that the winding drive path. Is formed, and the spool 26 is rotationally driven and executed.

As described above, in the camera, the leaf spring 34 is wound to selectively drive the drive unit 23 to control the film of the film cartridge to the spool 2 of the camera body 10.
6 is disposed in the revolution path of the planetary gear 30 of the planetary gear clutch mechanism 29 that is driven to wind up, and the restricting protrusion 33 is located at the release position of the arm member 32 that rotatably connects the planetary gear 30 and the sun gear 31. Correspondingly provided, while the planetary gear 30 is revolved from the transmission position to the release position, the engaging portion 341 of the leaf spring 34 is elastically engaged with the tooth portion of the planetary gear 30 and the arm member 32 is provided. By making the side part of the abutment 33 contact the protrusion 33, the rotation force of the planetary gear 30 is converted into a revolution force, and the revolution force is used to apply the biasing force of the leaf spring 34 to the planetary gear 30. , Arm member 3
2 is pressed against the protrusion 33 to regulate the position at the release position.

According to this, the switching angle of the planetary gear 30 can be minimized, and further, the planetary gear 30 due to an external impact can be used.
Since the malfunction can be reliably prevented, it is not necessary to dispose the fixed gear in the revolution locus of the planetary gear 30 as in the conventional case, so that miniaturization can be promoted as much as possible.

In the above embodiment, the leaf spring 34 is used as the elastic member, but the present invention is not limited to this, and various spring materials (wires, etc.) may be used. It is possible.

In the above embodiment, the planetary gear 30 is used.
And an arm member 32 for revolvingly connecting the sun gear 31 with the sun gear 31.
In the above description, the position is regulated by abutting on the projection 33 of the unit case 25. However, the present invention is not limited to this, and other components of the planetary gear clutch mechanism 29 may be regulated in the release position. It is also possible to configure.

Further, in the above embodiment, the description has been given of the case where the invention is applied to the planetary gear clutch mechanism 29 of the film winding system, but the invention is not limited to this, and the planetary gear clutch mechanism 18 of the film rewinding system and various other types. The present invention is also applicable to the planetary gear clutch mechanism arranged in the camera driving mechanism of (1), and the same effect can be expected in any case.

Therefore, the present invention is not limited to the above-described embodiment, and in addition, various modifications can be made at the stage of carrying out the invention without departing from the scope of the invention. Further, the embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements.

For example, even if some constituent elements are deleted from all the constituent elements shown in the embodiment, the problem described in the section of the problem to be solved by the invention can be solved, and the effect of the invention is described. When the effect can be obtained, a configuration in which this constituent element is deleted can be extracted as an invention.

Based on the above-described embodiment, (1) a transmission position for engaging the camera drive mechanism with the rotation of the motor in the first direction to transmit the driving force of the motor, and rotating the motor in the second direction. And a release position where the transmission is released from the camera drive mechanism to release the transmission, and a planetary gear clutch mechanism having a planetary gear that is movable between them, and the planetary gear clutch mechanism is arranged in the revolution path of the planetary gears of the planetary gear clutch mechanism. And a restricting member for restricting the revolution of the planetary gear caused by the rotation of the motor in the second direction at the release position, and the planetary gear of the planetary gear clutch mechanism disposed within the revolution trajectory of the planetary gear so as to be engageable with the planetary gear. And an elastic member that engages with the planetary gear when the planetary gear clutch mechanism revolves to the release position by the rotation of the motor in the second direction. In the state where the rotation of the motor is stopped at the release position, the planetary gear clutch mechanism is biased in a direction to bring the planetary gear clutch mechanism into contact with the restriction member so as not to move from the release position, It is possible to provide a camera characterized by allowing the planetary gear clutch mechanism to move from the release position to the transmission position when the motor is rotationally driven in the first direction.

(2) A sun gear driven by a motor, a planetary gear meshing with the sun gear, and a driven gear arranged on the revolution locus of the planetary gear are provided. Rotation of the planetary gear in the first direction causes the planetary gear to mesh with the driven gear and transmit the rotation, and the rotation of the motor in the second direction causes the planetary gear to rotate. In a camera having a planetary gear clutch mechanism that is switched to a release position where it is separated from the driven gear and releases transmission by revolving movement in the second direction, the camera is disposed within the revolution path of the planetary gear of the planetary gear clutch mechanism. A restriction member for restricting the revolution of the planetary gear due to the rotation of the motor in the second direction at the release position, and the planetary gear within the revolution trajectory of the planetary gear of the planetary gear clutch mechanism. The planetary gear clutch mechanism, which is disposed so as to be engageable and in a state where the rotation of the motor is stopped at the release position, biases the planetary gear clutch mechanism in a direction in which the planetary gear clutch mechanism is brought into contact with the restriction member so as not to move from the release position. It is possible to provide a camera including an elastic member.

(3) A sun gear driven by a motor, a planetary gear that meshes with the sun gear, and a driven gear that is arranged in the revolution locus of the planetary gear are provided. Rotation of the planetary gear in the first direction causes the planetary gear to mesh with the driven gear to transmit the rotation, and the rotation of the motor in the second direction causes the planetary gear to rotate. By the revolution movement in the second direction,
In a camera having a planetary gear clutch mechanism for switching the planetary gear to a release position where it is separated from the driven gear and releases transmission, the motor is disposed in a revolution path of the planetary gear of the planetary gear clutch mechanism, A restricting member for restricting the revolution of the planetary gear due to the rotation in the second direction at the release position, and a restricting member disposed within the revolution locus of the planetary gear of the planetary gear clutch mechanism so as to be engageable with the planetary gear. When the planetary gear clutch mechanism revolves to the release position by the rotation of the motor in the second direction, the planetary gear clutch mechanism is elastically deformed while engaging with the planetary gear to allow the planetary gear to revolve to the release position. An elastic member, and when the planetary gear of the planetary gear clutch mechanism reaches the release position and the rotation of the motor is stopped, the regulating member and the elastic member are provided. Thus the planetary gear, it is possible to provide a camera which is characterized in that it is locked to the release position.

(4) It is possible to provide a camera characterized in that the elastic member described in (1), (2) and (3) has an engaging portion that engages with the tooth portion of the planetary gear. it can.

(5) In the above (2) and (3), further, at least when film winding and feeding is performed by rotationally driving the winding shaft, the winding shaft of the film winding mechanism connected to the driven gear is connected. When the motor is rotated in the first direction to position the planetary gear to the release position and the film is rewound from the winding shaft to the film cartridge by rotating the film. And a control means for driving and controlling the motor so as to position the planetary gear at the release position by rotating the motor in the second direction for a predetermined time or by a predetermined amount. Can be provided.

(6) In the elastic member described in (2) and (3), the planetary gear is revolved from the transmission position where it meshes with the driven gear toward the release position, and the driven gear is rotated. It is possible to provide a camera characterized in that it is arranged so as to engage with the planetary gear at substantially the same time when the engagement with is released.

[0064]

As described above in detail, according to the present invention, a camera having a simple structure, capable of promoting miniaturization without occupying a space and realizing reliable operation control can be realized. Can be provided.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a schematic configuration of a camera according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a main part of the film drive control system of FIG.

3 is an exploded perspective view showing the winding drive unit, the second motor and the spool shown in FIG.

4 is a perspective view showing an assembled state of the winding drive unit and the second motor of FIG. 1. FIG.

5 is a plan view showing a state where a planetary gear of the planetary gear clutch mechanism of the winding drive unit of FIG. 1 is moved to a release position.

6 is a plan view showing a state where a planetary gear of a planetary gear clutch mechanism of the winding drive unit of FIG. 1 is moved to a transmission position.

7 is a flowchart shown to explain the film rewinding and feeding in FIG. 1. FIG.

[Explanation of symbols]

8 Mirror drive mechanism 81 ... Mirror drive lever 9 ... Shutter charge mechanism 10… Camera body 11… Mirror box 12 ... Patrone room 13… Battery room 14 ... spool room 15… Camera drive mechanism mount 16 Mirror / shutter drive unit 17 ... Deceleration transmission mechanism 18 ... Planetary gear clutch mechanism 19 ... First motor 191… Connection terminal 20 ... Main mirror 21 ... Focal plane shutter 22 ... Film rewinding mechanism 221 ... Rewinding gear 222 ... Fork gear 223 ... Fork part 23 ... Winding drive unit 24 ... Second motor 241 ... Connection terminal 25… Unit case 251 ... Boss 252 ... Positioning boss 26 ... spool 261 ... Winding gear 27 ... 1st hoisting gear 271 ... Small gear 272 ... Large gear section 28 ... Second winding gear 281 ... Small gear 282 ... Large gear section 29 ... Planetary gear clutch mechanism 30 ... Planetary gear 31… sun gear 311 ... Small gear 312 ... Large gear 32 ... Arm member 33 ... Projection 34 ... Leaf spring 341 ... Locking part 342 ... Mounting part 343 ... Boss hole 35 ... Lid 36 ... Movement detection disk 361 ... Detection pattern 37 ... Photointerrupter 40 ... Motor control circuit 41 ... Film movement detecting means 42 ... CPU 44 ... Film rewinding detection switch 45 ... Position detecting means

Claims (3)

[Claims] 1. A transmission position in which a motor is rotated in a first direction to mesh with a camera driving mechanism to transmit a driving force of the motor, and a rotation in a second direction of the motor separates from the camera mechanism section. A planetary gear clutch mechanism having a planetary gear that is movable between a release position for releasing transmission and a planetary gear revolution of the planetary gear clutch mechanism, and rotation of the motor in a second direction. A restriction member that restricts the revolution of the planetary gears by the release position, and the planetary gear clutch mechanism is disposed within the revolution path of the planetary gears of the planetary gear clutch mechanism so as to be engageable with the planetary gears. Of the planetary gear clutch mechanism so that the planetary gear clutch mechanism does not move from the release position when the rotation of the planetary gear clutch mechanism is stopped. Camera characterized by comprising a timber, a 2. A transmission position in which a motor is rotated in a first direction to mesh with a camera driving mechanism to transmit a driving force of the motor, and a rotation in a second direction of the motor separates from the camera driving mechanism. A planetary gear clutch mechanism having a planetary gear that is movable between a release position for releasing transmission and a planetary gear revolution of the planetary gear clutch mechanism, and rotation of the motor in a second direction. And a restricting member for restricting the revolution of the planetary gears by the release position at the release position, and the planetary gears in the revolution path of the planetary gears of the planetary gear clutch mechanism so as to be engageable with the planetary gears. When the planetary gear clutch mechanism revolves to the release position by the rotation of, the elastic member that engages with the planetary gear and elastically deforms to allow the planetary gear to revolve to the release position. In the state where the planetary gear of the planetary gear clutch mechanism reaches the release position and the rotation of the motor is stopped, the planetary gear clutch mechanism is locked at the release position by the restriction member and the elastic member. Characteristic camera. 3. The camera according to claim 1, wherein the elastic member is a leaf spring that engages with a tooth portion of the planetary gear.