JPH10312013A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To quickly and stably attain driving for a releasing mechanism and a mechanism concerned with photographing except the releasing mechanism, in a camera. SOLUTION: The camera is provided with a release driving mechanism or a preliminary operation driving mechanism which is driven with the relations between a forward/backward rotatable motor and the planetary gears 7 and 9 of a planetary mechanism linked with the rotation of the output shaft side 2 of the motor and between a cam gear 42 and a phase base plate 44. Then, the up operation of a flashing device, the winding of a film or the like is executed as a preliminary operation by the backward rotation of the motor. After the preliminary operation is completed, the motor is rotated forward for a specified time, to raise a mirror or release the charging of a shutter through the planetary gears, as the release driving mechanism. In a state where the planetary gears are disconnected from the preliminary operation driving mechanism, the motor is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera in which a single motor drives a release mechanism and a mechanism other than the release mechanism.

[0002]

2. Description of the Related Art In recent years, various cameras incorporating a flash device which can be moved between a light emitting position and a storage position have been proposed. For example, in a camera with a built-in flash device described in Japanese Patent Application Laid-Open No. 62-112428 (conventional example 1), the built-in flash device is spring-biased in a projecting direction with respect to the camera body, and tightened in conjunction with an electromagnetic magnet. It is automatically up by canceling. Further, a camera with a built-in flash device described in JP-A-63-195637 (conventional example 2)
The internal image flash device is driven up and down by the forward and reverse rotation of one motor. The camera described in Japanese Patent Application Laid-Open No. 3-237442 (Conventional Example 3) uses a planetary clutch mechanism, and drives a mirror or shutter by one rotation of one motor in one direction, and drives a flash device by rotation in another direction. It is carried out.

[0003]

However, the cameras described in the prior arts 1 and 2 require a dedicated actuator for driving the flash mechanism, so that the camera becomes large and expensive. ing. Further, in the camera described in the above-mentioned conventional example 3, since the mirror drive and the flash device drive are performed by the forward and reverse rotation of one motor by the planetary clutch mechanism, when the flash device is driven before the release, the flash device is not driven. In comparison with, the time required for the planetary gear to revolve and switch is longer, so that the release time lag is longer.

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the prior art, the present invention relates to a camera having a release mechanism and a preliminary operation driving mechanism for changing the state of the camera by forward and reverse rotation of one motor for cost reduction. It is an object of the present invention to provide a highly reliable camera with a stable release time lag regardless of whether the mechanism is operated.

[0005]

In order to achieve the above-mentioned object, the present invention has a motor and a planetary mechanism which can be rotated in normal and reverse directions. A drive mechanism for a preliminary operation such as a flash photographing or a change of a photographing screen range is operated.

[0006]

According to the present invention, there is provided a motor capable of rotating forward and reverse, a planetary gear which revolves based on the rotation of the motor, a release driving mechanism, and a preliminary operation driving mechanism for changing a state of the camera. The release drive is driven by rotating the motor in a first direction and the planetary gear meshing and transmitting to the release drive mechanism by the revolution of the planetary gear, and the preparatory operation is to rotate the motor in the second direction. When the planetary gear revolves, the planetary gear meshes with and transmits to the preliminary operation drive mechanism. After the preliminary operation is completed, the motor is rotated in the first direction for a predetermined time, and the planetary gear revolves to rotate the planetary gear. The planetary gear starts release operation regardless of whether the preliminary operation drive mechanism was activated before release by stopping the motor while disconnected from the preliminary operation drive mechanism. Both are immediately driven transmitting the rotation of the motor to the release mechanism. That is, when the preliminary operation drive mechanism is operated before the release, the time required for the revolution of the planetary gear can be deleted in advance, so that the release time lag can be stably maintained.

According to a second aspect of the present invention, the release drive mechanism performs a mirror drive or a shutter charge drive so that a required release operation can be performed quickly and reliably at the time of photographing. According to a third aspect of the present invention, the preliminary operation driving mechanism drives a flash device movable between a light emitting position and a storage position to at least one of the light emitting position and the storage position, so that a flash required at the time of release is released. You can shoot quickly. According to a fourth aspect of the present invention, the preliminary operation drive mechanism can quickly set a flash device for a zoom lens camera in accordance with zooming by driving the irradiation angle of the flash device in conjunction with the focal length. According to the fifth aspect of the present invention, the preliminary operation drive mechanism can quickly change a desired photographing range screen by changing the photographing screen range. According to the sixth aspect of the present invention, the predetermined time for rotating the motor in the first direction is set based on the state of the power supply voltage of the camera, so that the release drive at the time of shooting can be appropriately performed.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a main part of a single-lens reflex camera to which the present invention is applied, FIG. 2 is a plan view of a flash device driving mechanism thereof,
3 and 4 are enlarged views of main components. In FIG. 1, B is a camera body, 1 is a forward / reverse motor, which is housed in a spool 12 described later, and a pulley 2 is fixed to an output shaft thereof. 3 is a timing belt, 4
Is a gear having a pulley on one side and a gear section on the other side. The gear is rotated by a timing belt 3 hung on the pulley, and the rotation is transmitted to a gear 5 meshing with the gear section. A sun gear 6 meshes with the gear 5 and revolves two planetary clutches described later. Reference numeral 7 denotes a planetary gear constituting one planetary clutch, which is engaged with the sun gear 6 by a planetary lever 8 and revolves. Reference numeral 9 denotes a planetary gear constituting the other planetary clutch, which is engaged with the sun gear 6 by a planetary lever 10 and revolves.

Reference numeral 11 denotes a gear for transmitting the film to a hoisting system. The gear 11 has a ratchet 11a at an end as shown in FIG. 3A, and meshes with the planetary gear 7 by the reverse rotation of the motor 1. Reference numeral 12 denotes a spool for winding the film, and has a gear portion 12a that meshes with the gear 11. Reference numeral 13 denotes a gear for transmitting to the film rewinding system. The gear 13 meshes with the planetary gear 9 by the reverse rotation of the motor 1 and further meshes with the gear 14. A gear 15 meshes with the gear 14, and a timing belt 16 meshes with a pulley 15a provided on one side and is linked with a rewinding system. Reference numeral 17 denotes a main plate to which the motor 1 is fixed, and the gears 4 to 6, 11, the spool 1
2 and gears 13 to 15 are rotatably supported. 18
Is a cover, the gears 4 to 6, 11 and the gears 13 to 15
And is fixed to the base plate 17 with screws.

Reference numeral 19 denotes a lever rotatably supported by the cover 18 and, as shown in FIG. 3B, arms 19a and 1a.
9b, the arm 19a is connected to the planetary lever 10 and swings in conjunction with the revolution of the planetary gear 9. 20
Is a lever rotatably supported by the cover 18 and has a claw 20a at the tip as shown in FIG. 3C to prevent the gear 11 from rotating when the gear 11 meshes with the ratchet 11a. The leaf spring 21 is fixed to the other end, and is urged by the torsion spring 22 in a direction to retreat from the gear 11. The constituent parts of the motor 1 to the torsion spring 22 are configured as one unit, and two damper rubbers 23 for preventing runout, two step screws 24 and a cylindrical damper rubber 25 are respectively provided.
Thus, the camera body B is suspended on the lower surface of the camera body B.

Reference numeral 30 denotes a rewinding fork unit for winding a film on a patrone, and has a pulley 30a at an end for meshing with the timing belt 16.
A roller 31 for applying a predetermined tension to the timing belt 16 is rotatably supported on a shaft on the lower surface of the camera body B. A cover 32 is fixed to the lower surface of the camera body B, and has a shaft portion 32a that rotatably supports the rewind fork unit 30. Reference numeral 35 denotes a photoreflector for optically detecting the movement of a well-known film perforation. The photoreflector 35 is fixed to a predetermined position on the right side of the aperture surface of the camera body B and counts the number of perforations to detect the amount of movement of the film. doing.

M is a mirror box in the single-lens reflex camera, which integrally forms a shaft for rotatably supporting a gear lever and the like. Reference numeral 40 denotes a gear that meshes with the revolution of the planetary gear 7 when the motor 1 rotates forward, and transmits rotation to a cam gear 42 via a gear 41. As shown in FIG. 3 (d), the cam gear 42 has a cam 42a on one side and three cams 42b and 42c on the opposite side, and a phase substrate 44 described later on the cam 42c at the end thereof. The brush 43 for sliding is fixed. Reference numeral 44 denotes a phase substrate, and the cam gear 42 is driven by the brush 43 sliding.
Is detected. 45 is the mirror box M
4A, a pin 45a for tracing the cam 42a of the cam gear 42 and a pin 45b for transmitting the movement to a mirror lever 60, which will be described later, and a rocking center. And a fitting shaft 45c.

Reference numeral 46 denotes a fitting shaft 45 of the charge lever 45.
4C, an arm portion 46a for tracing the cam 42a of the cam gear 42 and an arm portion 19a of the lever 19 in a predetermined case, as shown in FIG.
b) and an arm 46c for preventing the planetary gear 7 from revolving due to the reverse rotation of the motor 1 by contacting the planetary lever 8 in a predetermined case. A torsion spring 47 urges the switching lever 46 clockwise as viewed from below, that is, the arm portion 46a so as to abut the cam 42c of the cam gear 42.

Reference numeral 48 denotes a swinging lever, as shown in FIG. 4 (c), an arm 48a for tracing the cam 42b of the cam gear 42 at one end, and the other end by rotating the motor 1 in a predetermined case. When the planetary gear 7 revolves, the planetary gear 8
Shafts each having a stopper portion 48b for receiving the shaft, and a rotatable shaft rotatably supporting a shaft portion 48c which is a swing center substantially at the center and a gear 49 which meshes with the planetary gear 7 in parallel with the shaft portion 48c. The stopper portion 48b is formed in a predetermined arc shape from the shaft 48d so that the planetary gear 7 and the gear 49 maintain a constant mesh.

Reference numeral 50 denotes a torsion spring,
8 is urged clockwise as viewed from below, that is, the arm portion 48a is brought into contact with the cam 42b of the cam gear 42. Therefore, when the arm 48a reaches the maximum lift of the cam 42b of the cam gear 42 due to the forward rotation of the motor 1, the swing lever 48 rotates counterclockwise against the torsion spring 50 to rotate the planetary gear. The rotation of the planetary gear 7 is transmitted to the gear 49 by the reverse rotation of the motor 1 and transmitted to the flash drive system by the reverse rotation of the motor 1. Reference numeral 51 denotes a gear, which meshes with the gear 49 and is rotatable about a shaft portion 48c of the swing lever 48. That is, since the gear 49 revolves with respect to the gear 51 by the swing of the swing lever 48, the mesh between the gear 49 and the gear 51 is kept constant.

Reference numeral 52 denotes a shaft rotatably supported by the mirror box M and transmitting the light from the lower surface to the upper surface.
Reference numeral 3 denotes a gear fixed to the lower end of the shaft 52, which meshes with the gear 51. Reference numeral 54 denotes a cover to which the phase substrate 44 is adhered at a position where the brush 43 of the cam gear 42 is opposed to the gear 40 to the cam gear 42 and the charge lever 4.
5, switching lever 46, swing lever 48, and gear 51,
Further, the gear 53 is fixed to the mirror box M from below so as to rotatably press the gear 53.

Reference numeral 55 denotes a worm gear, which is a mirror box M
The upper part is fixed to the upper end of the shaft 52.
Reference numeral 56 denotes a sun gear having a helical gear that meshes so as to convert the rotation of the worm gear 55 by 90 degrees, and revolves a planetary clutch described later. Numeral 57 denotes a planetary gear constituting a planetary clutch, which is meshed with the sun gear 56 by a planetary lever 58 rotatable on a shaft on the side surface of the mirror box M,
The rotation of the motor 1 at the time of reverse rotation is represented by a mirror box M shown in the figure.
Is configured to revolve in the counterclockwise direction with respect to the side surface. S is a well-known focal plane shutter unit, which is fixed to the rear surface of the mirror box M.

Reference numeral 60 denotes a mirror lever for driving the mirror or charging the shutter. The mirror lever 60 is rotatably held on a shaft on the side surface of the mirror box M, and is pivotally supported by a torsion spring 61 so as to be biased counterclockwise. ing. Also,
The mirror lever 60 has a transmitting portion 60a for driving a mirror unit (not shown) up and down, a driving portion 60b of the focal plane shutter unit S, and an arm portion 60c that engages with the pin 45b of the charge lever 45. ,
The pin 45a of the charge lever 45 is
When the cam 42a is traced to the maximum lift, the pin 45b of the charge lever 45 is connected to the torsion spring 61.
And the mirror unit 60 is rotated counterclockwise to lower the mirror unit (not shown) and charge the drive unit of the focal plane shutter unit S. Further, when the pin 45a of the charge lever 45 falls from the maximum lift of the cam 42a of the cam gear 42 to the minimum lift, the load of the charged torsion spring 61 causes the mirror lever 60 to rotate clockwise to raise the mirror. It is supposed to.

Next, in FIG. 2, reference numeral C denotes an upper cover which is one of the exterior parts of the camera, and is fixed to an upper portion of the camera body B so as to cover a pentaprism (not shown). Reference numeral 70 denotes a gear, which meshes and transmits and rotates when the planetary gear 57 revolves counterclockwise. Reference numeral 71 denotes a cam gear.
And has a cam 71a and a cam 71b on the front and back, respectively. Reference numeral 72 denotes a normally open type leaf switch.
It is turned on / off by 1b. 73 is a main plate,
0 and the cam gear 71 are rotatably supported, the leaf switch 72 is fixed, and is fixed inside the upper cover C.

Reference numeral 74 denotes a flash case, which is the base of a flash unit which can be moved up and down between a light emitting position and a storage position, and is rotatably supported on the upper portion of the upper cover C. It is composed of a lever 75. The lever 7
As shown in FIG. 4 (d), pins 5 are provided at both ends thereof with a shaft 7a and a pin 7 driven by a cam 71a of the cam gear 71.
5b, the shaft portion 75a rotatably penetrates through the flash case 74 from the inside of the upper cover C,
Are fixed with screws 77. Therefore, the upper cover C
The lever 75 inside the flash unit and the lever 76 inside the flash unit are configured to swing integrally. Although the axis of the other flash case 74 is not shown, it is rotatably supported on the upper cover C by a step screw or the like, and further has an axis 74b.
A fan-shaped hole 74c for projecting a stopper pin 79 on the side surface of the upper cover C into the flash unit when the flash unit is moved up and down between the light emitting position and the storage position.
The stopper pin 79 contacts the end of the fan-shaped hole 74c to determine the light emitting position of the flash unit.
78 is a torsion spring, one arm of which is
The other arm is hung on the shaft 74a of the flash case 74, and the levers 75 and 76 are urged against the flash case 74 to rotate clockwise.

Reference numeral 79 denotes a stopper pin fixed to the side surface of the upper cover C. 80 is a toggle spring, one arm of which is the stopper pin 79 and the other arm of which is the shaft 74b.
The flash unit is urged in the up direction when the flash unit is up to the light emitting position, and is urged in the down direction when the flash unit is reversed halfway down to the storage position.
Reference numeral 81 denotes a well-known flash light emitting unit including a xenon tube, a reflector, a panel, and the like. 82 is a plastic cover, 83 is an aluminum cover forming an exterior,
The cover 82 is fitted into the inside thereof, and is fixed to the flash case 74.

Here, the torsion spring 78 is always set to a stronger urging force than the toggle spring 80. That is, when the reverse rotation of the motor 1 is transmitted to the cam gear 71 and the lever 75 is driven, the torsion spring 7
8 overcomes the toggle spring 80 and pushes up the flash unit toward the light emitting position. When the flash unit exceeds the reversal area of the toggle spring 80, the flash unit is further pushed up to the light emitting position by the drag of the toggle spring 80. Here, if the operation of the flash unit is stopped by the photographer's hand or the like during the upward operation toward the light emitting position, the torsion spring 78 absorbs the light and the rotation of the lever 75 is not transmitted to the flash unit. In addition, it is configured such that only the levers 75 and 76 do not swing and break.

Next, the operation principle of the above configuration will be described.
5 to 8 show a state in which drive switching is transmitted by forward / reverse rotation of one motor, in which each figure (a) shows a stop position of the brush 43 on the phase substrate 44, and (b) shows that the motor 1 The state when the cam gear 42 stops at the position of the phase substrate 44 in the forward rotation (a) is shown, and the state of drive transmission when the motor 1 is reversed in the state in (b) is shown in (c). First, in FIG. 5A, a signal when the brush 43 stops at a hatched portion of the phase substrate 44 is:
CMSP1: Low, CMSP2: High, CMSP
3: High is output. In FIG. 5B, the motor 1 rotates forward, and the rotation of the pulley 2 is transmitted to the gears 4 and 5 via the belt 3 to rotate the sun gear 6 clockwise. At this time, the planetary gear 9 also revolves clockwise and rotates freely without engaging with any gear. Since the planetary lever 10 of the planetary gear 9 also rotates clockwise, the lever 19 rotates counterclockwise, and the arm 19b of the lever 19 separates from the pin 46b of the switching lever 46. Similarly, the planetary gear 7 and the planetary lever 8 revolve clockwise, mesh with the gear 40, and rotate the cam gear 42 clockwise via the gear 41.

Then, the phase substrate 44 shown in FIG.
In the position (2), the pin 45a of the charge lever 45 moves from the maximum lift to the minimum lift of the cam 42a of the cam gear 42, and the mirror up operation is completed via the mirror lever 60. Further, since the switching lever 46 is not restrained by the cam 42c of the cam gear 42, the switching lever 46 is rotated clockwise by the urging force of the torsion spring 47 and stopped at a predetermined position shown in the figure. Further, since the arm portion 48a of the lever 48 is restrained by the maximum lift of the cam 42b of the cam gear 42, the arm 48a is still oscillating in the counterclockwise direction. That is, although the gear 49 has entered the revolution region of the planetary gear 7, the planetary gear 7 is not engaged because it is rotating forward. In this state of the lever 48, the pin 48d presses the leaf spring 21 to rotate the lever 20 clockwise, thereby engaging the claw 20a with the claw 11a of the gear 11.
Therefore, since the rotation of the gear 11 is prevented, the spool 1
2 is in a state where it does not move carelessly.

Next, referring to FIG.
The signal when the brush 43 is stopped in the shaded area is indicated by CMS
P1: High, CMSP2: High, CMSP3:
Outputs Low. 6B, the motor 1 rotates forward and the rotation of the pulley 2 is
To rotate the sun gear 6 clockwise. At this time, the planetary gear 9 also revolves clockwise and rotates freely without engaging with any gear. Since the planetary lever 10 of the planetary gear 9 is also rotating clockwise, the lever 19 rotates counterclockwise and the lever 19 rotates.
Arm 19b is separated from the pin 46b of the switching lever 46. Similarly, the planetary gear 7 and the planetary lever 8 revolve clockwise, mesh with the gear 40, and rotate the cam gear 42 clockwise via the gear 41.

5A, the pin 45a of the charge lever 45 is moved from the minimum lift to the maximum lift of the cam 42a of the cam gear 42 at the position of the phase substrate 44 in FIG. 6A. , And the mirror lever 60 ends the mirror-down operation and the shutter charging operation while charging the torsion spring 61. Further, since the arm portion 46a is restricted by the cam top of the cam 42c of the cam gear 42,
It turns counterclockwise against the urging force of the torsion spring 47 and stops at a predetermined position shown in the figure. Further, since the arm portion 48a of the lever 48 is not restrained by the maximum lift of the cam 42b of the cam gear 42, the torsion spring 5
It swings clockwise by the urging force of 0, and is in the state shown in the figure. That is, the gear 49 is retracted from the revolution range of the planetary gear 7. When the lever 48 is in the state of
Since d is retracted from the leaf spring 21, the lever 20 is rotated counterclockwise by the urging force of the torsion spring 22, and the claw 20a is retracted from the claw 11a of the gear 11. Therefore, the spool 12 via the gear 11 is in a free state.

Next, in FIG. 6C, FIG.
When the motor 1 is reversed in the state of the mechanism described above, the pulley 2,
The sun gear 6 is rotated counterclockwise via the belt 3 and the gears 4 and 5. Therefore, the planetary gear 7 and the planetary lever 8
Revolves counterclockwise. At this time, since the switching lever 46 is in a state of being restrained by the cam top of the cam 42c of the cam gear 42, the revolving of the planetary lever 8 is prevented by the arm 46c, and the planetary gear 7 is in a state of not engaging with any gear. is there. The planetary gear 9 and the planetary lever 10 also revolve counterclockwise, and the lever 19 rotates clockwise in conjunction with the planetary lever 10. Here, since the switching lever 46 is in the illustrated state, the pin 46b is retracted from the swing range of the arm 19b of the lever 19, so that the rotation of the lever 19 is not prevented. That is, since the revolution of the planetary lever 10 is not prevented, the planetary gear 9 meshes with the gear 13 and rotates the rewinding fork unit 30 counterclockwise via the gears 14 and 15 and the timing belt 16 to rewind the film.

Next, referring to FIG.
The signal when the brush 43 is stopped in the shaded area is indicated by CMS
P1: Low, CMSP2: High, CMSP3: L
ow is output. In FIG. 7B, the motor 1 rotates forward, transmitting the rotation of the pulley 2 to the gears 4 and 5 via the belt 3, and rotating the sun gear 6 clockwise. At this time, the planetary gear 9 also revolves clockwise and rotates freely without engaging with any gear. Since the planetary lever 10 of the planetary gear 9 also rotates clockwise, the lever 19 rotates counterclockwise, and the arm 19b of the lever 19 separates from the pin 46b of the switching lever 46.
Similarly, the planetary gear 7 and the planetary lever 8 revolve clockwise, mesh with the gear 40, and rotate the cam gear 42 clockwise via the gear 41.

6 (a), the pin 45a of the charge lever 45 remains at the maximum lift of the cam 42a of the cam gear 42 at the position of the phase substrate 44 in FIG. 7 (a). Because of this state, the mirror is maintained in the down state. Switching lever 4
The arm 6a is rotated clockwise by the urging force of the torsion spring 47 and stopped at a predetermined position shown in the figure because the arm portion 46a releases the restriction of the cam top of the cam 42c of the cam gear 42. Further, while the lever 48 is maintained in the same state as that of FIG.
Since the pin 48d is also retracted from the leaf spring 21 of the lever 20, the spool 12
Is in a free state.

Next, in FIG. 7C, FIG.
When the motor 1 is reversed in the state of the mechanism described above, the pulley 2,
The sun gear 6 is rotated counterclockwise via the belt 3 and the gears 4 and 5. Therefore, the planetary gear 7 and the planetary lever 8
Revolves counterclockwise. At this time, since the switching lever 46 is in a state where the cam top of the cam 42 c of the cam gear 42 is released, the pin 46 b is connected to the arm 1 of the lever 19.
9b, the lever 19 is prevented from rotating clockwise, so that the planetary lever 10 is prevented from revolving counterclockwise, and the planetary gear 9 is not engaged with the gear 13. The planetary gear 7 and the planetary lever 8 also revolve in the counterclockwise direction. However, since the switching lever 46 is in the illustrated state, the pin 46b is retracted from the revolving region of the planetary lever 8, so that the planetary gear 7 The motor 1 revolves in the counterclockwise direction until it meshes with the motor 11 and transmits the reverse rotation of the motor 1 to the spool 12. That is, the film is wound up.

Next, referring to FIG.
The signal when the brush 43 is stopped in the shaded area is indicated by CMS
P1: Low, CMSP2: Low, CMSP3: Hi
gh is output. In FIG. 8B, the motor 1 rotates forward, and the rotation of the pulley 2 is transmitted to the gears 4 and 5 via the belt 3 to rotate the sun gear 6 clockwise. At this time, the planetary gear 9 also revolves clockwise and rotates freely without engaging with any gear. Since the planetary lever 10 of the planetary gear 9 also rotates clockwise, the lever 19 rotates counterclockwise, and the arm 19b of the lever 19 separates from the pin 46b of the switching lever 46.
Similarly, the planetary gear 7 and the planetary lever 8 revolve clockwise, mesh with the gear 40, and rotate the cam gear 42 clockwise via the gear 41.

7 (a), the pin 45a of the charge lever 45 remains at the maximum lift of the cam 42a of the cam gear 42 at the position of the phase substrate 44 in FIG. 8 (a). Because of this state, the mirror is maintained in the down state. Switching lever 4
The arm 6a is rotated clockwise by the urging force of the torsion spring 47 and stopped at a predetermined position shown in the figure because the arm 46a is not restrained by the cam 42c of the cam gear 42.
Further, the arm 48a of the lever 48 is the cam 4 of the cam gear 42.
Since the gear 49 is constrained by the maximum lift of 2b, it swings counterclockwise, and the gear 49 enters a state of revolution of the planetary gear 7. In this state of the lever 48, the pin 48 d pushes the leaf spring 21, thereby rotating the lever 20 clockwise and causing the claw 20 a to engage the claw 11 a of the gear 11. Therefore, since the rotation of the gear 11 is prevented, the spool 12 is not inadvertently moved. This state of the camera is always a standby state for release standby.

Next, in FIG. 8C, FIG.
When the motor 1 is reversed in the state of the mechanism described above, the pulley 2,
The sun gear 6 is rotated counterclockwise via the belt 3 and the gears 4 and 5. Therefore, the planetary gear 7 and the planetary lever 8
Revolves counterclockwise. At this time, since the switching lever 46 is in a state where the cam top of the cam 42 c of the cam gear 42 is released, the pin 46 b is connected to the arm 1 of the lever 19.
9b, the lever 19 is prevented from rotating clockwise, so that the planetary lever 10 is prevented from revolving counterclockwise, and the planetary gear 9 is not engaged with the gear 13. The planetary gear 7 and the planetary lever 8 also revolve in the counterclockwise direction, but since the switching lever 46 is in the illustrated state, the pin 46b is retracted from the revolving region of the planetary lever 8, and the gear 49 is set in the planetary gear 7 , The planetary gear 7 meshes with the gear 49. Then, the gears 51 and 53, the shaft 52, the worm gear 5
5. The reverse rotation of the motor 1 is transmitted via the gears 56, 57, 70 and the cam gear 71 for the flash unit up operation.

In FIGS. 5 to 8 described above, the switching operation of the drive mechanism by the forward / reverse rotation of one motor has been described. However, each of FIGS. It is in the state of down and shutter charge completion. Therefore, the film rewinding operation shown in FIG. 6C due to the reverse rotation of the motor 1, the film winding operation shown in FIG.
The flash device up operation of (c) is set to be performed in a state where the mirror is down and the shutter charge is completed. That is, the cam phase layout in one rotation of the cam gear 42 is mirror up operation → mirror up operation → mirror down operation and shutter charging operation → mirror down operation and shutter charge operation completion (rewinding at reverse rotation → winding up at reverse rotation → driving flash device at reverse rotation). Has become.

The planetary gear 7 of the two planetary gears is driven up and down, the shutter is charged, the film is wound up, and the flash device is driven up, and the planetary gear 9 is only used to rewind the film. And the cam gear 4
Table 2 shows the state of engagement between the two planetary gears when the motor 1 rotates in the reverse direction.

[Table 1]

Next, the flash device hop-up operation and the manual down operation will be described with reference to FIGS. As described above, at the time of FIG. 8B, the flash drive mechanism is in the state of FIG.
8C, the mechanism is brought into the state shown in FIG. 8C, the cam gear 71 rotates clockwise, and the cam 71a of the cam gear 71 pushes the pin 75b of the lever 75 as shown in FIG. The flash unit is pushed up to a position where light can be emitted against the force of 80. At this time, since the pressure of the torsion spring 78 is always set higher than that of the toggle spring 80 as described above, the lever 7 remains unabsorbed.
The flash unit is also displaced by the displacement angle of 5.

The toggle spring 80 is located in the middle of the area where the cam 71a of the cam gear 71 pushes the pin 75b of the lever 75.
Since the reversal area is set, the flash unit is pushed up to a position where light can be emitted by the resistance of the toggle spring 80 after the reversal area is exceeded. Then, although the load for pushing up the flash unit is eliminated from the middle of the gear 71, the gear 71 continues to rotate clockwise, and the cam 71b of the cam gear 71 is set to the leaf switch 72 as shown in FIG.
Is turned on, and the signal is switched from high to low. Then, the cam gear 71 continues to rotate further clockwise, and as shown in FIG.
As shown in (b), the cam 71b of the cam gear 71 turns off the leaf switch 72 and switches from a low to a high signal.
After checking the switch for detecting the flash unit up state (not shown), the motor 1 is stopped, and the operation of raising the flash unit to a position where the flash unit can emit light is completed. Thereafter, the motor 1 is moved for about 15 seconds from the state shown in FIG. 8C to the state shown in FIG.
ms, the planetary gear 7 and the planetary lever 8 are revolved clockwise, and the motor 1 is stopped in a state in which the planetary gear 7 and the planetary gear 8 are engaged with or immediately before being engaged with the gear 40 to return to a standby state for release standby.

Here, as shown in FIG. 10B, when the photographer manually pushes the flash unit which has been raised to the position where light can be emitted, the toggle spring 80 is moved from a position beyond the reversal region of the toggle spring 80. The flash unit is moved down to the storage standby position by the drag of (2), and the state returns to the state of FIG. At this time, the cam 71a of the cam gear 71 is
Since it has already been retracted from the swing range of 5b, there is no drag generated by the torsion spring 78. Also,
In the state of FIG. 9A, when the flash unit is manually pulled up by the photographer, the flash unit is raised to a position where the flash unit can emit light by the drag of the toggle spring 80 beyond the inversion area of the toggle spring 80. The state shown in FIG. 10B is reached, and the switch for detecting the flash unit up state (not shown) is confirmed. That is, the flash mechanism described in the present embodiment is capable of both an automatic flash unit up operation by driving a motor and a manual operation such that the photographer directly raises the flash unit.

Next, a case will be described with reference to FIG. 11 in which the flash unit is moved up by the reverse rotation of the motor 1 while holding the flash unit with the photographer's finger. First, as in the case of FIGS. 9 and 10, when the motor 1 is reversed in the state of FIG. 11A, the cam gear 71 rotates clockwise, and the cam 71a of the cam gear 71
Press b. However, the flash unit remains depressed, and as shown in FIG.
Absorbs the displacement angle of the lever 75. The cam gear 71 further continues to rotate clockwise, and as shown in FIG. 11C, the cam 71b of the cam gear 71 turns on the leaf switch 72 to switch from a high signal to a low signal. However, since the switch for detecting the flash unit up state (not shown) cannot confirm the up operation, the same operation is repeated two more times to stop the motor 1 and display an error of the up operation to the position where the flash unit can emit light. .

Next, a control circuit of the camera will be described with reference to FIG. In the figure, the CPU is a microcomputer (hereinafter referred to as "microcomputer"), and BAT is a power supply battery. SW1 is a power switch which is turned on by pressing a first stroke of a release button (not shown).
R _BAT is turned on, and power supply to each circuit is started. The output of the power switch SW1 is supplied to the input port SW1 of the microcomputer CPU. SW2 is a release switch which is also turned on by pressing the second stroke of the release button, and supplies its output to an input port SW2 of the microcomputer CPU. SW3 is a back cover switch, which is turned on when the back cover is closed, and supplies an output to the input port BP of the microcomputer CPU and the one-shot circuit OS. The transistor TR _BAT is turned on via the resistor R2. The turning on of the transistor TR _BAT with the closing of the back cover is intended to supply power to the microcomputer CPU for loading the film when a film is loaded on the camera and the back cover (not shown) is closed. . The transistor TR _BAT is a microcomputer CPU
Is in the operating state and the output port Von is high, it is kept on via the inverter I1 and the resistor R2.

REG is a regulator and a transistor T
It is connected to the collector output of R _BAT and supplies a stable constant voltage Vcc to each circuit (in the figure, constant voltage Vc
c is supplied to an input port Vcc of the microcomputer CPU and an analog circuit MET for performing a photometric calculation described later). M
ET is an analog circuit that performs photometric calculation, and the photometric sensor SP
The subject brightness information BV obtained by C and the R _AV corresponding to the preset aperture value information AV are calculated by BV-AV,
Information is input to an input port ADIN1 as an AD conversion input of the microcomputer CPU as an output BV1out. R3 is a resistor corresponding to the film sensitivity information SV, and inputs information to the input port ADIN2 of the microcomputer CPU. V _BAT is the battery voltage of the battery BAT and is supplied to the input port ADIN3 of the microcomputer CPU and the transistor bridge circuit MD described later.

SW4 is a film loading detection switch, which is composed of, for example, a leaf spring disposed in the patrone chamber of the camera. And the output of the microcomputer CPU
Is supplied to the input port PTIN. SW5, SW6
SW7 is the CMSP1 and the CMSP of the phase substrate 44, respectively.
2, which corresponds to the phase pattern of CMSP3, and means a switch associated with sliding between the brush 43 and the phase pattern. And each switch output is the microcomputer CP
It is supplied to U input ports CMSP1, CMSP2, and CMSP3. (The relationship between the state of the mechanism and the output signal is shown in FIG.
8 to FIG. )

SW8 is a switch for judging whether the flash unit built in the camera is in a state of being raised to the light emitting position, and is constituted by a leaf switch. When the flash unit is in the light emitting position, its output is inputted to the input port of the microcomputer CPU. STU
P. SW9 is the leaf switch 72
The rotation position of the cam gear 71 for driving the flash unit to the light emission position is detected, and the input port STC of the microcomputer CPU is detected.
Supply to TL. The FLM emits infrared light from a light projecting unit (light emitting diode) supplied from an output port PRON of the photoreflector 35 microcomputer CPU, detects light reflected on the film by a light receiving unit, and detects an input port of the microcomputer CPU input port. Supply to PRAD. DS
P is a display drive circuit for performing various displays of the camera such as shooting information and warning display, and an output port CS of the microcomputer CPU.
Supplied from DSP.

MD is a known transistor bridge circuit for controlling the motor 1 as instructed by the microcomputer CPU, and is connected to the output ports PM0 and PM1. MG1 is a shutter front blade group magnet, which is configured to start running of the shutter front blade group by cutting off the power supply.
By setting the output port PS0 of the PU to low, the resistance R
4, the transistor TR _MG1 is turned off, and the current is cut off. MG2 is a rear shutter blade group magnet, which is configured to start the running of the rear shutter blade group by cutting off the current. Specifically, by setting the output port PS1 of the microcomputer CPU to low, The transistor _TRMG2 is turned off via the resistor R5, and the conduction is cut off.

FLSH is a flash circuit including a main capacitor, a xenon tube, and the like. A light emission signal FS, a light emission stop signal FO, and a charge start signal SC are supplied from an output port of the microcomputer CPU, and a charge completion signal CF is supplied to an input port. .
X is a switch that is turned on when the leading blade of the shutter unit S has completed traveling, and supplies a signal to the input port X of the microcomputer CPU. CN2 is a switch that is turned on when the rear blade of the shutter unit S has completed traveling.
A signal is supplied to the input port CN2 of the PU.

Next, the operation of the camera control circuit having the above configuration will be described with reference to the flowcharts of FIGS.
First, when the microcomputer CPU receives power supply, the program is executed, the output port Von is set to high, and the transistor TR _BAT is kept on to perform power holding control. Therefore, in FIG. 13, first, the operation is started from the automatic loading of film "AL". In step 1, the back cover of the camera is closed, the back cover switch SW3 is turned on, and the process proceeds to step 2. In step 2, it is determined whether or not a film cartridge is loaded in the camera based on the output of the film loading detection switch SW4. If loaded, the process proceeds to step 3, and if not loaded, the process proceeds to the "release" routine.

In step 3, the input port ADIN3 (A
The voltage VBAT of the battery _BAT is checked based on the analog input (D conversion input). The voltage _VBAT is AD-converted by an AD converter in the microcomputer CPU. If the voltage _VBAT is lower than a predetermined voltage, the camera may malfunction. If not, go to step 5. In step 4, a serial signal is output from the output port CSDSP to the display drive circuit DSP to display a warning of a low battery voltage, and the flow advances to step 999. Here, the "stop" routine of step 999 sets the output port Von to low, thereby turning off the transistor TR _BAT, and also inactivating the regulator REG to turn off the circuit system power supply and wait for time. Normally, the power supply Vcc is turned off while the microcomputer CPU waits for this time. It should be noted that the power supply Vcc may exist even after the waiting time ends. That is, when the transistor TR _BAT is turned on for a factor other than the output of the output port on, specifically, when the one-shot circuit OS is operating by turning on the power switch SW1 or turning on the back cover switch SW3. It is.

In step 5, the ISO sensitivity of the DX code of the cartridge is read by the resistor R3, and the input port ADIN
2 (AD conversion input), store in the register SV, and proceed to step 6. In step 6, the motor 1 is rotated forward and the cam gear 42 is rotated, and the process proceeds to step 7.
Here, the motor control of the microcomputer CPU is performed as shown in Table 2.

[Table 2]

In Step 7, the phase of the phase substrate 44 is changed to the phase CMSP1 by the rotation of the cam gear 42.
2: High, CMSP3: Low is determined. In other words, when the state of the mechanism of the phase substrate 44 in FIG. In step 8, when the signal is established in step 7, the brake is applied to the motor 1 and the process proceeds to step 9. In step 9, the motor 1 is rotated in reverse to wind up the film.
Proceed to. At step 10, the pulse counter and the film counter for the number of frames of the film are reset so that the perforations of the film are counted by the photo reflector 35 (FLM) and stored in the EEPROM in the microcomputer CPU.

In step 11, 1.5 seconds is set as the timer in the microcomputer CPU as the AL timer, and the flow advances to step 12. In step 12, the photo reflector 35
To make the light emitting diode emit light from the output port PRON,
When a signal is detected by the movement of the film perforation, the signal is supplied to the input port PRAD. If the signal has not changed within 1.5 seconds of the AL timer, the process proceeds to step 13, and if the signal has changed within 1.5 seconds of the AL timer, the process proceeds to step 15. In step 13, the brake is applied to the motor 1, and the process proceeds to step 14. Step 1
In step 4, a serial signal is output from the output port CSDSP to the display drive circuit DSP, and a warning indicating that AL is impossible is displayed.
Proceed to the "stop" routine of step 999.

In step 15, the EE in the microcomputer CPU
The pulse counter of the PROM is counted up, and the process proceeds to step S16. In step 16, the timer 1.5 sec in the microcomputer CPU is reset, and the process proceeds to step 17.
In step 17, the timer in the microcomputer CPU is set to 150 m.
s is newly set, and the routine proceeds to step 18. Step 1
In step 8, as in step 12, the signal change is
If it is not within ms, the process proceeds to step 19 and the timer 15
If it has changed within 0 ms, the process proceeds to step 21. In step 19, the brake is applied to the motor 1, and in step 20
The program proceeds to step 999 to display "AL impossible" and proceeds to the "stop" routine of step 999.

In step 21, the EE in the microcomputer CPU
The pulse counter of the PROM is counted up, and the routine proceeds to step 22. In step 22, E in the microcomputer CPU
A comparison is made as to whether or not the pulse counter of the EPROM has reached 28.
If it has reached step 23, the process proceeds to step 23. In step 23, the brake is applied to the motor 1, and the process proceeds to step 24. In step 24, the timer 150 ms in the microcomputer CPU is reset, and the process proceeds to step 25. At step 25, the film counter of the EEPROM in the microcomputer CPU is counted up, 1 is written here, and the routine proceeds to step 26. In step 26, the motor 1 is rotated forward, the cam gear 42 is rotated, and the process proceeds to step 27.

In step 27, the rotation of the cam gear 42 causes the phase CMSP1: Low, CMSP of the phase
2: Low, CMSP3: High are determined. That is, the camera is set in a release waiting state. This release waiting state is a state in which the flash device up operation can be performed when the motor 1 rotates in the reverse direction, and the phase substrate 44 shown in FIG.
When the state of the mechanism shown in FIG. In step 28, when the signal is established in step 27, the brake is applied to the motor 1 and the process proceeds to the "release" routine.

Next, a "release" routine for photographing will be described with reference to FIG. In step 31, the camera is in a release wait state, that is, the flash device is up-driven by the reverse rotation of the motor 1.
It is determined whether or not the state of the mechanism of FIG. Phase CMPS of phase substrate 44: Low, C
If MSP2: Low, CMSP3: High, the process proceeds to step 36; otherwise, the process proceeds to step 32. In step 32, a voltage check is performed in the same manner as in step 3 described above. If NG, the process proceeds to step 33, and if OK, the process proceeds to step 34. In step 33, a serial signal is output from the output port CSDSP to the display drive circuit DSP to display a warning of a low battery voltage.
To the "stop" routine. In step 34, the motor 1 is rotated forward, the cam gear 42 is rotated, and
Go to 5.

In step 35, the phase of the phase substrate 44 is changed by the rotation of the cam gear 42.
2: Low, CMSP3: High are determined. That is, when the state of the mechanism of FIG. 8B in FIG. 8A of the phase substrate 44 is determined to perform the flash device up operation when the motor 1 rotates in the reverse direction, the process proceeds to Step 36. Step 3
In step 6, when the signal is established in step 35, the brake is applied to the motor 1 and the process proceeds to step 37. In step 37, the photometry calculation is performed by the SPC by turning on the switch SW <b> 1 by pressing the first stroke of the release button (not shown), and the process proceeds to step 38. Here, a digital value ADIN obtained by AD-converting an analog signal from BV1out as an output of the photometric operation circuit MET by the microcomputer CPU.
1 in the register BV1 (BV1 = ADIN
1). The value of BV-AV in terms of the apex value is stored in the resist BV1. The ISO sensitivity of the film is set in the register SV (SV = A) in the same manner as in step 5 described above.
DIN2). Also, register BV1
Then, the shutter time is obtained based on the store information of the register SV (TV = BV1 + SV) and stored in the register TV. Note that the contents of the register TV are the TV of the apex value.
It is.

In step 38, if BV1 obtained in step 37 is lower than the predetermined value, that is, if it is determined that the image is dark, flash light emission is required, and the routine proceeds to the "flash light emitting unit up" routine, where the value is higher than the predetermined value. If it is, that is, if it is bright, the process proceeds to step 39. In step 39, if the SW2 is turned on by pressing the second stroke of the release button (not shown), the process proceeds to step 40, and if not, the process proceeds to the "stop" routine of step 999. In step 40, a voltage check is performed in the same manner as in step 3 described above.
If OK, go to step 42. In step 41, a serial signal is output from the output port CSDSP to the display drive circuit DSP to display a warning of a low battery voltage, and the process proceeds to step 999 "stop" routine. In step 42, the motor 1 is rotated forward, and the cam gear 42 is rotated to raise the mirror and release the shutter charge.
Proceed to 3.

In step 43, the rotation of the cam gear 42 causes the phase CMSP1 of the phase substrate 44 to be low,
2: High, CMSP3: High is determined. That is, when the completion of the mirror-up and the release of the shutter charge in the state of the mechanism of FIG. 5B of the phase substrate in FIG. In step 44, when the signal is established in step 43, the brake is applied to the motor 1 and the routine proceeds to step 45.

At step 45, the apex value TV obtained at step 37 is converted to the actual shutter time (real time extension). The output port PS0 is set to high, and the magnet MG1 for starting the running of the shutter front blade group of the shutter unit S is energized. As a result, the shutter front blade group travels, and exposure to the film is started. Also, the actual time of the shutter time is counted, and this time becomes the exposure time. Then, when the real-time counting is completed, the output port PS1 is set to high, and the magnet MG2 for starting the running of the rear shutter blade group is energized, whereby the rear shutter group runs to complete the exposure of the film. When the running is completed, the switch CN2 is turned on. Then, both output ports PS0 and PS1 are set to low,
The energization of both magnets MG1 and MG2 is stopped, and the routine proceeds to step 46. At this time, flash emission is required in step 38, the flash unit is raised to the flashable position, and when SW8 is in the ON state, the shutter time is set to the shutter synchronization time, and the shutter front blade group is set. When the switch X is turned on when the running is completed, the microcomputer CPU
A flash start signal is supplied from the output port FS to the FLSH circuit to emit the flash light, and a flash stop signal is supplied from the output port FO of the microcomputer CPU to the FLSH circuit by the output of the light control circuit (not shown). The department stops issuing.

In step 46, if the film counter in the microcomputer CPU is 0, the routine proceeds to the "release" routine. If the film counter is 1 to 35, the routine proceeds to the "film winding" routine. Proceeds to the "film rewind" routine as the end of the last frame shooting.

Next, referring to FIG. 15, a description will be given of a "flash light emitting unit up" routine for driving the flash light emitting unit up to a position where light can be emitted. First, in step 51, since the photographer can manually raise the flash unit directly in the present embodiment, it is determined whether or not the flash unit has already been raised to a position where light can be emitted by SW8.
If it has risen, charging is started, and the flash light emitting unit up end is determined as step 3 of the "release" routine in FIG.
Returning to step 9, if it has not risen, proceed to step 52. In step 52, a voltage check is performed in the same manner as in step 3 described above. If NG, the process proceeds to step 53, and if OK, the process proceeds to step 54. In step 53, a serial signal is output from the output port CSDSP to the display drive circuit DSP to display a warning of a low battery voltage.
To the "stop" routine.

In step 54, the flash light emitting section is driven up by the reverse rotation of the motor 1, so that the phase substrate 44 shown in FIG.
It is determined whether the state of the mechanism of FIG. 8B in FIG. 8B is present or not, and the phase CMSP1: Low, CM of the phase substrate 44 is determined.
If SP2: Low, CMSP3: High, proceed to step 58; otherwise, proceed to step 55. In step 55, the motor 1 is rotated forward and the cam gear 4
2 is rotated, and the process proceeds to step 56. In step 56, the phase CMSP of the phase substrate 44 is
1: Low, CMSP2: Low, CMSP3: Hig
Find h. That is, the state of the mechanism of the phase substrate 44 shown in FIG. 8B in FIG.
Proceed to 7. In step 57, when the signal is established in step 56, the brake is applied to the motor 1 and the routine proceeds to step 58.

In step 58, the motor 1 is rotated in the reverse direction in order to drive the flash light emitting portion up to a position where light can be emitted, and the flow advances to step 59. In step 59, the cam gear 71 is rotated by the reverse rotation of the motor 1, and the operation shown in FIGS. 9A to 10B is performed.
The signal is supplied to the input port STCTL of the PU, and the motor 1 is rotated until the signal is switched from high to low to high. In step 60, the brake is applied to the motor 1 and the routine proceeds to step 61.

In step 61, it is determined whether or not the flash unit has actually risen to a position where light can be emitted by SW8. If the flash unit has risen, charging is started.
If not, go to step 62. In step 62, a serial signal is output from the output port CSDSP to the display drive circuit DSP, and the flash light emitting portion up is NG.
Is displayed, and the routine proceeds to a “stop” routine of step 999. In step 63, the motor 1 is rotated forward by a predetermined timer, and is moved from the state shown in FIG. 8C to the state shown in FIG. Here, the timer determines the time from when the planetary gear 7 meshes with the gear 49 to when it meshes with the gear 40 based on the structure and efficiency of the mechanism, the characteristics of the motor, and the check level of the voltage _VBAT . In the configuration of the present embodiment, it is 25 ms at 5.5 V. In step 64, the brake is applied to the motor 1, and the flash light emitting portion up is completed, and the process returns to step 39 of the "release" routine in FIG.

Next, the "film winding" routine will be described with reference to FIG. First, in step 71, the film is wound by reverse rotation of the motor 1, so that the phase substrate 44 shown in FIG.
It is determined whether or not the state of the mechanism of FIG. Phase CMPS of phase substrate 44: Low, C
If MSP2: High, CMSP3: Low, go to step 77; otherwise, go to step 72. In step 72, a voltage check is performed in the same manner as in step 3 described above. If NG, the process proceeds to step 73, and if OK, the process proceeds to step 74. In step 73, a serial signal is output from the output port CSDSP to the display drive circuit DSP to display a warning of a low battery voltage, and the process proceeds to step 999 "stop" routine. Step 7
At 4, the motor 1 is rotated forward, the cam gear 42 is rotated,
Proceed to step 75.

In step 75, the rotation of the cam gear 42 causes the phase CMSP1: Low, CMSP of the phase
2: High, CMSP3: Low is determined. That is, in order to wind the film when the motor 1 rotates in the reverse direction, the state of the mechanism shown in FIG. 7B of the phase substrate 44 shown in FIG. In step 76, when the signal is established in step 75, the brake is applied to the motor 1 and the routine proceeds to step 77. In step 77, the motor 1 is rotated in reverse to wind up the film, and in step 78
Proceed to. At step 78, the pulse counter of the EEPROM in the microcomputer CPU for detecting the film perforation is reset, and the routine proceeds to step 79.

In step 79, a timer of 150 ms is set in the microcomputer CPU, and the flow advances to step 80. In step 80, as in step 18 described above, if the signal has not changed within 150 ms of the timer, the process proceeds to step 81; otherwise, the process proceeds to step 82. In step 81, the motor 1 is braked,
Proceed to the "film rewind" routine. At step 82, the pulse counter of the EEPROM in the microcomputer CPU is counted up, and the routine proceeds to step 83.

In step 83, the EE in the microcomputer CPU
A comparison is made as to whether the pulse counter of the PROM has reached 8, and if not, the process returns to step 79, and if it has reached 8, the process proceeds to step 84. That is, here, eight perforations of one frame advance of the film are detected. At step 84, the brake is applied to the motor 1 and the routine proceeds to step 85. At step 85, the timer 150msc in the microcomputer CPU is reset, and the routine proceeds to step 86. In step 86, the EEPROM in the microcomputer CPU
Count up the film counter of step 87.
Proceed to.

In step 87, the motor 1 is rotated forward, the cam gear 42 is rotated, and the routine proceeds to step 88. In step 88, the rotation of the cam gear 42 causes the phase CMSP1: Low, CMSP2: Low, CMSP of the phase substrate 44 to move.
3: High is determined. That is, the camera is set in a release waiting state. This release wait state is for motor 1
In the state in which the flash light emitting portion up operation can be performed at the time of the reverse rotation of the phase board 44, the state of the mechanism of the phase substrate 44 in FIG. In step 89, when the signal is established in step 88, the brake is applied to the motor 1 and the routine proceeds to a "release" routine.

Next, the "film rewinding" routine will be described with reference to FIG. First, in step 91, in order to rewind the film by the reverse rotation of the motor 1, it is determined whether or not the phase substrate 44 is in the state of the mechanism of FIG. 6B in FIG. 6A. Phase CMPS of phase substrate 44:
High, CMSP2: High, CMSP3: Low
If yes, go to step 97; otherwise, go to step 92. In step 92, a voltage check is performed in the same manner as in step 3 described above. If NG, the process proceeds to step 93, and if OK, the process proceeds to step 94. In step 93, a serial signal is output from the output port CSDSP to the display drive circuit DSP to display a warning of a low battery voltage, and the process proceeds to step 999 "stop" routine. In step 94, the motor 1 is rotated forward and the cam gear 4
2 and then go to step 95.

In step 95, the rotation of the cam gear 42 causes the phase CMSP1: High, CMS
P2: High, CMSP3: Low. That is, in order to rewind the film when the motor 1 rotates in the reverse direction, the state of the mechanism shown in FIG. Step 9
In step 6, when the signal is established in step 95, the motor 1 is braked and the routine proceeds to step 97. In step 97, the motor 1 is rotated in reverse to wind up the film, and the flow advances to step 98. At step 98, the pulse counter of the EEPROM in the microcomputer CPU for detecting the film perforation is reset, and the routine proceeds to step 99.

In step 99, a timer of 150 ms is set in the microcomputer CPU, and the routine proceeds to step 100. In step 100, as in step 18 described above, if the signal does not change within the timer of 150 ms, the process proceeds to step 101. If the signal has changed within the timer of 150 ms, the process proceeds to step 103. In step 101, the motor 1 is braked, and step 10 of the "film rewind" routine is performed.
Proceed to 2. In step 102, since there is some abnormality such as stretching of the film during the rewinding of the film, a serial signal is output from the output port CSDSP to the display drive circuit DSP to display a warning of the rewinding abnormality, and the "stop" routine of step 999 is performed. Proceed to. Step 103
Then, the pulse counter of the EEPROM in the microcomputer CPU is counted up, and the routine proceeds to step 104.

In step 104, E in the microcomputer CPU
A comparison is made as to whether the pulse counter of the EPROM has reached 8, and if not, the process returns to step 99, and if it has reached 8, the process proceeds to step 105. That is, here, eight perforations of one frame advance of the film are detected. In step 105, the timer 1 in the microcomputer CPU
Reset 50 msc and proceed to step 106. In step 106, the film counter of the EEPROM in the microcomputer CPU is counted down, and the flow advances to step 107.

In step 107, E in the microcomputer CPU
A comparison is made as to whether the pulse counter of the EPROM has reached 0. If the pulse counter has not reached 0, the process returns to step 99, and if it reaches 0, the process proceeds to step 108. That is, here, it is detected whether or not the film has been rewound for the number of photographed frames.
In step 108, after 2 seconds from the time when the film counter reaches 0 in step 107, the motor 1
Is braked, and the routine proceeds to step 109. Step 1
In 09, the display drive circuit DSP is output from the output port CSDSP.
Then, a serial signal is output to indicate that rewinding has been completed, and the routine proceeds to a "stop" routine of step 999.

In the above-described embodiment, as an example, the mechanism in which the rotation of the gear 49 for passively transmitting the drive from the planetary gear 7 is used for driving the flash light emitting unit up is described. Needless to say, it can be easily used for zoom driving of a flash light emitting unit which is already known. Further, in recent years, the present invention can also be used for switching between general photographing screens such as panorama size and standard size.
The driving of these flash units and the switching of the shooting screen are performed by the camera's basic sequence from the start of release, mirror up →
This function is not directly related to shutter drive → mirror down → film winding, and is a preparatory operation capable of arbitrarily and selectively rotating a plurality of times before the start of release.

[0075]

As described above, according to the present invention, a motor capable of rotating forward and backward, a planetary gear which revolves based on the rotation of the motor, a release driving mechanism, and a spare for changing the state of the camera are provided. An operation drive mechanism is provided, the release drive is driven by rotating the motor in a first direction and the planetary gear meshing with and transmitting to the release drive mechanism by the revolution of the planetary gear. 2 and the planetary gears reciprocally engage with and transmit to the preliminary operation drive mechanism by the revolution of the planetary gears. After the preliminary operation is completed, the motor is rotated in the first direction for a predetermined time, and the planetary gears are rotated by the revolution. By stopping the motor in a state where the planetary gear is separated from the preliminary operation drive mechanism, when the preliminary operation drive mechanism is operated before release, the time required for the planetary gear to revolve is reduced. The release time lag for that can be deleted can be kept stable in.

According to a second aspect of the present invention, the release drive mechanism performs a mirror drive or a shutter charge drive so that a required release operation can be performed quickly and reliably at the time of photographing. According to a third aspect of the present invention, the preliminary operation driving mechanism drives a flash device movable between a light emitting position and a storage position to at least one of the light emitting position and the storage position, so that a flash required at the time of release is released. You can shoot quickly. According to a fourth aspect of the present invention, the preliminary operation drive mechanism can quickly set a flash device for a zoom lens camera in accordance with zooming by driving the irradiation angle of the flash device in conjunction with the focal length. According to the fifth aspect of the present invention, the preliminary operation driving mechanism can quickly change a desired photographing range screen by deflecting the photographing screen range. According to the sixth aspect of the present invention, the predetermined time for rotating the motor in the first direction is set based on the state of the power supply voltage of the camera, so that the release drive at the time of shooting can be appropriately performed.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a main part of a camera according to an embodiment of the present invention.

FIG. 2 is a side view showing a mechanism of the flash device.

FIG. 3 is an enlarged perspective view of each component of a main part of the camera.

FIG. 4 is an enlarged perspective view of each of the main components.

5A and 5B are plan views illustrating a first operation state of a switching transmission mechanism using the motor, wherein FIG. 5A is a state diagram of a stop position of a brush on a phase substrate, and FIG. The state diagram of a transmission system is shown, respectively.

FIG. 6 is also a plan view illustrating a second operation state.
(A) is a state diagram of the stop position of the brush on the phase substrate,
(B) is a state diagram of the transmission system during normal rotation of the motor in that state,
(C) shows a state diagram of the transmission system at the time of motor reverse rotation in the state of (b), respectively.

FIG. 7 is also a plan view illustrating a third operation state.
(A) is a state diagram of the stop position of the brush on the phase substrate,
(B) is a state diagram of the transmission system during normal rotation of the motor in that state,
(C) shows a state diagram of the transmission system at the time of motor reverse rotation in the state of (b), respectively.

FIG. 8 is also a plan view illustrating a fourth operation state.
(A) is a state diagram of the stop position of the brush on the phase substrate,
(B) is a state diagram of the transmission system during normal rotation of the motor in that state,
(C) shows a state diagram of the transmission system at the time of motor reverse rotation in the state of (b), respectively.

FIGS. 9A and 9B are plan views showing the operation of the drive mechanism of the flash unit, wherein FIG. 9A shows a storage position, and FIG.

FIGS. 10A and 10B are plan views showing the operation of the drive mechanism of the flash device after that, wherein FIG. 10A shows a state in which the light emitting position is being raised, and FIG.

FIGS. 11A and 11B are plan views showing an operation at the time of motor reverse rotation in a state where a finger is pressed at a storage position of the flash unit.
(B) and (c) show the movement of the mechanism.

FIG. 12 is an electric circuit diagram for operating the camera.

FIG. 13 is a flowchart illustrating an operation of the camera during film autoloading.

FIG. 14 is a flowchart illustrating an operation in a release routine.

FIG. 15 is a flowchart illustrating an operation in a flash light emitting unit up routine.

FIG. 16 is a flowchart illustrating the operation of the film winding routine.

FIG. 17 is a flowchart illustrating an operation of a film rewind routine.

[Explanation of symbols]

B: camera body, M: mirror box, S: focal plane shutter unit, C: top cover, 1
..Motors, 2 pulleys, 3,16 timing belts, 4,5,11,13,14,15,40,4
1,49,51,53,70 gears, 6,56 sun gears, 7,9,57 planetary gears, 8,10,58
· Planetary lever, 12 · · spool, 17, 73 · · base plate, 18, 32, 54 · · cover, 19, 20, 48,
75, 76 · · lever, 21 · · · leaf spring, 22, 47,
50, 61, 78 ... Torsion spring, 23, 25 ...
Damper rubber, 24 step screw, 30 rewind fork unit, 31 roller, 35 photoreflector, 42, 71 cam gear, 43 brush, 44
..Phase substrate, 45..charge lever, 46..switch lever, 52..shaft, 55..worm gear, 6
0 ・ ・ Mirror lever 、 72 ・ ・ Leaf switch 、 74 ・
· Flash device case, 77 · · screws, 79 · · · stopper pin, 80 · · · toggle spring, 81 · · · flash light emitting unit, 82, 83 · · · cover.

Claims (6)

[Claims] A motor capable of rotating forward and reverse, a planetary gear that revolves based on the rotation of the motor, a release driving mechanism, and a preliminary operation driving mechanism that changes a state of a camera; The planetary gear is driven by rotating in the first direction by meshing and transmitting to the release drive mechanism by the revolution of the planetary gear. The preparatory operation is to rotate the motor in the second direction, and to rotate the planetary gear by the revolution of the planetary gear. The planetary gear meshes with and transmits to the preliminary operation drive mechanism, and after the completion of the preliminary operation, rotates the motor in the first direction for a predetermined time,
A camera, wherein the motor is stopped in a state where the planetary gear is separated from the preliminary operation drive mechanism by the revolution of the planetary gear. 2. The system according to claim 1, wherein the release drive mechanism performs mirror drive or shutter charge drive.
The described camera. 3. The camera according to claim 1, wherein the preliminary operation drive mechanism drives a flash device movable between a light emitting position and a storage position to at least one of the light emitting position and the storage position. . 4. The camera according to claim 1, wherein the preliminary operation drive mechanism zoom-drives the irradiation angle of the flash device in conjunction with the focal length. 5. The camera according to claim 1, wherein said preliminary operation driving mechanism changes a photographing screen range. 6. The camera according to claim 1, wherein the predetermined time for rotating the motor in the first direction is set based on a state of a power supply voltage of the camera.