JPH0713719B2 - Camera with built-in flash device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a flash device built-in type camera having a protective cover capable of covering the front surface of a taking lens.

(Background of the Invention) As a lens shutter camera, a compact one having a built-in flash device has been conventionally known. In this type of flash device built-in type camera, the light emitting part of the flash device projects from the camera body when used, in other words, can be moved away from the lens optical axis, and is stored inside the camera body when not in use, in other words, approaches the lens optical axis. It can be moved as described above, and is configured to be constantly charged when protruding. For this reason, if the light emitting unit is left protruding when the camera is not used, the battery is likely to be consumed due to unnecessary charging, and if the camera is held with the light emitting unit protruding, the light emitting unit is easily damaged.

By the way, in order to protect the taking lens provided in the camera body, a camera is provided with a protective cover that covers the front surface of the taking lens slidably or rotatably on the camera body, and the protective cover can be opened or closed manually or electrically. Is also known.

When the flash device described above is built into a camera with a protective cover of this type, the operation becomes complicated if the opening and closing of the protective cover and the projecting and storing of the light emitting unit are performed separately. If the user forgets to store the light emitting unit even if the protective cover is closed when the camera is not in use, the battery will be consumed significantly as described above, and the battery must be replaced frequently.

Therefore, as disclosed in Japanese Patent Application Laid-Open No. 59-79232, by appropriately interlocking the closing operation of the protective cover and the housing operation of the light emitting portion, the light emitting portion can be securely housed when the camera is not used. However, in the camera disclosed herein, even if the protective cover is opened, the light emitting portion does not project, so when the flash device is used, a separate operation of projecting the light emitting portion is required, and there is still room for improvement in operability. In addition, there is a need for an operating member for projecting the light emitting portion, and there is room for further improvement in structure.

(Object of the Invention) In order to solve the conventional problems as described above, an object of the present invention is to provide a flash device built-in type camera in which a light emitting portion can be projected and housed in association with the opening / closing operation of a protective cover. Especially.

(Summary of the Invention) The present invention provides a protective cover that is movable between a closed position that covers the front surface of the taking lens and an open position that opens the front surface of the taking lens, a near position close to the optical axis of the lens, and a remote position from the optical axis of the lens. The present invention is applied to a camera with a built-in flash device, which includes a flash device having a light emitting unit that can move between distant positions and cover driving means that moves a protective cover between a closed position and an open position.

Then, the second protrusion engaged with the first protrusion that is integral with the light emitting unit.
And a second protrusion engages with the first protrusion to drive the light emitting unit to a near position when moving from the first position to the second position. The moving member for preventing the light emitting unit from moving to the far position, and the spring member formed on the moving member and the first protrusion are interposed, and the moving member moves from the second position to the first position. When the light emitting portion is moved to the distant position by pressing the first protruding portion when moving, and when the pressing force to the near position side acts on the light emitting portion at the distant position, the light emitting portion is compressed and does not move the moving member. A compression spring that allows the light emitting unit to move to a near position, and a moving member that drives the moving member to the second position in conjunction with the cover driving unit driving the protective cover to the closed position, and the protective cover to the open position. A flash device drive that drives the moving member to the first position in conjunction with being driven. And means, thereby to solve the problems described above.

(Embodiment) FIG. 1 shows an embodiment of a camera according to the present invention. In this embodiment, a single motor provided in a film winding spool is used to (A) open and close a lens cover (B). Projection and storage of lens barrel (C) Projection and storage of light emitting part of flash device (D) Film winding (E) Charge of shutter mechanism etc. (F) Film rewinding is controlled.

Throughout this specification, the term “projection of the lens barrel” means that the photographing lens provided in the lens barrel is moved together with the lens barrel to a remote position away from the imaging surface. It means moving the photographing lens together with the lens barrel to a close position close to the image pickup surface, and does not necessarily mean that the lens barrel cannot be completely stored in the camera body to photograph. For example, a shooting lens is composed of a master lens and a conversion lens,
During telephoto shooting, the master lens is moved to a remote position away from the imaging surface, and then a conversion lens is placed between the master lens and the imaging surface.When shooting wide-angle shooting, the conversion lens is retracted from the optical axis of the lens before mastering. This includes the possibility of moving the lens to a close position close to the imaging surface, and further includes the case where the lens barrel projects from the camera body in the housed state.

Throughout this specification, the projection of the flash unit light emitting unit means moving the light emitting unit to a position away from the optical axis of the photographing lens, that is, a far position, and housing means placing the light emitting unit on the optical axis of the photographing lens. It means moving to a close position, that is, a close position, and does not necessarily mean a state in which the flash unit cannot be used by storing the light emitting unit in the camera body.
For example, in the case of performing flash photography on the wide-angle side as in a bifocal camera, this is a concept including the case where the light emitting unit is caused to emit light closer to the optical axis of the photographing lens than in the case of performing flash photography on the telephoto side.

In FIG. 1, a substrate 1 fixed to a camera body (not shown) has a lens barrel (shown by a chain double-dashed line in FIGS. 3A and 3B) 2 on which a photographing lens is provided. An opening 1a larger than the diameter is formed, and two elongated holes 1b are formed around the opening 1a. Rods 3a and 3b are inserted into the slot 1b, and one end of each rod has fulcrums A1 and A2.
Lens covers 4a and 4b which are rotatable around the respective are held. Here, the lens covers 4a and 4b function as a protective cover that covers the front surface of the taking lens. The other end of the rod is connected to a drive ring 5 described later. A flash device 6 is connected to the drive ring 5 via a flash device drive system described later. Here, the drive ring 5 is a member that constitutes a cover drive system which will be described in detail later, and the rotation of the drive ring 5 around the optical axis opens and closes the covers 4a and 4b and drives the flash device drive system. The flash device block 6c is projected and stored.

Further, rods 7a and 7b are erected on the substrate 1 and the rods 7a and 7b are erected.
Is inserted through a lens barrel block 8 provided with a lens barrel 2, a shutter mechanism (not shown), a focus adjustment mechanism (not shown), etc., and a rod 7b is fitted into a U-shaped groove provided in the block. As a result, the block 8 is held slidably. Therefore, the lens barrel block 8 can be moved back and forth on the rods 7a and 7b along the optical axis by the lens drive system described later, and the photographing lens can be brought into and out of contact with the film surface as the image pickup surface.

Next, each drive system described above will be described in detail. Here, the cover drive system and the lens drive system have a common cam member 11 that is rotationally driven by a motor 10 provided in the film spool 9, and the power transmission mechanism from the motor 10 to the cam member 11 is common. Therefore, the transmission mechanism will be referred to as a cam drive system and will be described first.

(I) Cam drive system The pinion gear 12 attached to the output shaft of the motor 10 meshes with the reduction gear 13, and the reduction gear 13 passes through reduction gear trains 14 to 16 arranged to sequentially transmit rotation. Sun Sun Gear
Connected to 17. A planetary gear 18 is pivotally supported on an arm 17a attached to the sun gear 17, so that the planetary gear 18 can be rotated when the motor reverses.
18 is configured to mesh with the reduction gear 19. Reduction gear
19 is connected to a sun gear 21 via a reduction gear 20. The sun gear 21 is provided with a planetary gear 22 via an arm 21a and is connected to the gear 23 at the time of reverse rotation of the motor except during film rewinding described later. The gear 23 meshes with a gear 24 provided on the shaft of the cam member 11 to drive the cam member 11 to rotate. The gear 23 is also meshed with a brush gear 43 described later.

The cam member 11 includes a surface cam 25 as a cover controlling cam means formed on the uppermost peripheral surface, a groove cam 26 as a lens controlling cam means formed on the uppermost upper surface, and a central gear. 24 and a cutout cam 27 at the lowermost part, and is rotatably supported on the camera body about a fulcrum A5. Face cam 25
Is connected to the cover drive system, and the grooved cam 26 is connected to the lens drive system. The cam member 11 will be described later.

(II) Cover drive system The cover drive system has a lever 28 whose shaft portion is pivotally supported by the substrate 1 via 28a, and one end of the lever 28 is parallel to the lens cover holding rods 3a, 3b. Is provided with a rod 28b extending to the front surface of the rod 28b. A rod 28c extending on the opposite side of the rod 28b is provided at the other end of the lever 28.
Is inserted into the elongated hole 5a of the drive ring 5. And
The lever 28 is constantly urged by a spring 29 in the clockwise direction about the shaft portion 28a.

The drive ring 5 is further provided with two elongated holes 5b and 5c, and rods 3a and 3b attached to the lens covers 4a and 4b are inserted into the elongated holes, respectively. The drive ring 5 supported in this way always has a spring 30.
Is urged counterclockwise by the
It can be rotated clockwise and counterclockwise about the optical axis according to the state of engagement with b. The covers 4a and 4b are opened by the clockwise rotation of the drive ring 5, and the covers are rotated by the counterclockwise rotation. It is configured so that 4a and 4b are closed.

(III) Lens drive system The lens drive system has a lever 31 attached to the camera body so as to be rotatable around a fulcrum A3, and a pin 31a erected at one end of the lever 31 is loosely fitted in the groove cam 26. Has been done. The lever 31 has an elongated hole 31b, and the pin 8a erected on the bottom surface of the lens barrel block 8 is inserted into the elongated hole 31b. A latch pin 31c is provided at the other end of the lever 31, and a toggle spring 38 is provided between the lever 31 and the latch portion 32 provided in the camera body.

The lever 31 swings around the fulcrum A3 as the groove cam 26 rotates, the lever 31 rotates counterclockwise to project the lens barrel block 8, and the lever 31 rotates clockwise to rotate the lens. The lens barrel block 8 is configured to be housed. In other words,
The lens barrel block 8 is configured to be movable between a distance position away from the film surface and a proximity position close to the film surface.

(IV) Flash device drive system The flash device drive system has a lever 33 attached to the camera body so as to be rotatable around a fulcrum A4, and a drive ring 5 is attached to a fork 33a formed on one side of the lever 33. The pin 5d which is erected from is engaged. The gear 33b formed on the other side of the lever 33 includes a gear 3 pivotally supported by the camera body.
4 is meshed, and its gear 34 is meshed with a rack 35 supported by the camera body so as to be vertically movable. This rack 35
Is a moving member, and can be moved up and down between the illustrated lowered position (second position) and the raised position (first position) raised by a predetermined amount by rotation of the gear 34. The light emitting portion of the flash device 6 is provided inside the flash device block 6c, a slide plate 6a is erected on the bottom surface of the block 6c, and the arm 6b protruding from the slide plate 6a projects from the rack 35. It extends in the gap between the two protrusions 35a and 35b provided, and the arm 6b and the protrusion
A compression spring 36 is interposed between the arm 6b and 35b, so that the arm 6b is pressed and held by the spring 36 and the protrusion 35a.
Then, when the rack 35 rises, the flash device block 6c rises via the spring 36, and when the rack 35 descends, the projection 35a pushes the arm 6b downward and the flash device block 6c.
Is configured to descend. In this embodiment, the light emitting section is designed not to emit light when the flash device is stored. The sliding plate 6a is constantly urged downward by a tension spring 37 that is sufficiently weaker than the compression spring 36.

Next, the cam member 11 will be described.

As shown in FIG. 2, the surface cam 25 is formed along the peripheral edge of the uppermost part of the cam member and is an inclined surface 25a which is a cam surface for opening the cover.
And a flat surface 25b connected to it and an inclined surface 25a connected to it
Inclined surface which is a cam surface for opening the cover having a slope opposite to
25c and when the block 8 is in the storage position,
As shown by the solid line, the tip of the rod 28b is separated from the flat surface 25b by a distance Δ.
It is located at a distance h above. Therefore, when the surface cam 25 rotates in the direction of the arrow, the rod 28b moves upward while contacting the inclined surface 25a and descends along the inclined surface 25c (due to the spring force of the spring 29).
The lens covers 4a and 4b are controlled to be opened and closed via.

As shown in FIGS. 3A and 3B, the groove cam 26 is a substantially elliptical groove having a center point eccentric from the rotation center A5 of the cam member 11, and the rotation center A5 of the cam member 11 is A groove 26a having a constant curvature with a radius r as the center and a lens feeding cam surface in which the curvature gradually decreases when the groove cam 26 rotates clockwise in the drawing and the pin 31a abuts on the outer peripheral surface. A certain groove portion 26b and a groove portion 26c which is a lens retraction cam surface whose curvature gradually increases when rotating similarly and the pin 31a abuts on the inner peripheral surface of the inside, are shown in FIG. In this state, the lens barrel block 8 is held at the lens storage position, and the lens barrel groove block 8 is rotated from there in the direction of the arrow to the state shown in FIG. .

The drive system described above is driven in the first mode and the second mode in response to the operation of the lens position selection lever 40. Hereinafter, that point will be described in detail.

The lens position selection lever 40 is slidably attached to the camera body and is always urged to the right in the figure by a spring 41. A knob 40d is provided at the tip of the lever 40 extending to the camera body 39, and the lens position selection lever 40 is moved to the first position by operating the knob 40d in the direction of the arrow in the figure.
It is possible to switch to the lens extension position corresponding to the mode. To switch from this lens feeding position to the feeding position corresponding to the second mode, the lever 40 may be manually operated in the reverse direction of the arrow. At the end of the operation of housing the lens barrel, the mode is automatically switched to the second mode, that is, the lens retracting position.

A click lever 45 and a depression lever 46 are coaxially supported by the camera body in relation to the lens position selection lever 40. The depression lever 46 is constantly biased counterclockwise by a spring 48, which acts on the click lever 45 via the engaging portion 46c to bias the click lever 45 counterclockwise as well. On the other hand, springs 47 are hooked on the spring hooking pins 45a and 46a of both levers 45 and 46, whereby the click lever 45 is urged clockwise and the depression lever 46 is urged counterclockwise. Thus, the clockwise biasing force applied to the click lever 45 by the spring 47 is
Since it is stronger than the counterclockwise urging force of 48, the claw portion 45b of the click lever 45 is attached to the side wall 40b of the lens position selection lever 40.
When the lens position selection lever 40 is operated to the left in the figure, the claw portion 45b engages with the concave portion 40c of the side wall of the lens position selection lever 40 to move the lens position selection lever 40 to the first position.
It is configured to hold the lens at the lens extension position corresponding to the mode.

On the other hand, the claw portion 46b at the tip of the depression lever 46 is the cam member 11
The notch cam 27 is pressed against the peripheral surface of the notch cam 27.
When it has rotated to the lens storage position, it falls into the notch 27a, which causes the click lever 45 to engage via the locking portion 46c.
Is driven counterclockwise, and its claw 45b is disengaged from the recess 40c of the lens position selection lever 40, so that the lens position selection lever 40 is returned by the spring 41 to the lens retracted position corresponding to the second mode. Is configured to be.

Next, in the present embodiment, the film is automatically wound by one frame in response to the release operation, and the winding drive system will be described below.

(V) Film winding drive system The film winding drive system has a motor forward rotation signal generator 104 (see FIG. 5) that operates in response to the operation of a release button (not shown). Motor 10 by rotation signal
Is normally rotated, and the pinion gear 12 provided on the output shaft of the motor 10 is connected to the planetary gear 17 through the same system path as the cam drive system described above. When the film is wound, the motor 10 rotates in the normal direction, so that the arm 17a of the sun gear 17 swings clockwise, and the planet gear 18 is meshed with the gear 50. Gear 50
Is connected to a spool gear 52 at the lower end of the spool 9 via a gear 51.

The shutter mechanism and the like are charged in preparation for the next shooting in response to the film winding, and the charging mechanism will be described below.

(VI) Charging mechanism An arm 54a is attached to a sun gear 54 that is coaxially fixed to a sprocket 53 that is arranged to engage with the perforation of the film, and the tip of the arm 54a rotates with respect to the arm 54a. A free planet gear 55 is mounted in mesh with the sun gear 54. A charge gear 56 is provided so as to be able to mesh with the planet gear 55, and a sector gear 57 is provided on the upper side and a cam switch 58 is provided on the lower side coaxially with the gear 56. The sector gear 57 meshes with a rack portion 59a of a charge member 59 slidably provided on the camera body, and slides to the right in the figure as the sector gear 57 rotates. The charging member 59 is constantly urged to the left by the spring 60. The charging member 59 has an arm 59b that bends downward and extends.
The traveling plate 61 slidably provided on the lens barrel block 8 and the arm 59b are engaged with each other. By driving the traveling plate 61, the shutter mechanism and the automatic focus adjustment mechanism provided in the lens barrel block 8 are charged to prepare for the next release.

In this embodiment, the following mechanism is provided in order to rotate the gear 56 and obtain the motor stop signal from the switch S6 described later even when the film is not loaded.

A sun gear 62 is fixed to the gear 50 via a rod 50a,
The planetary gear 63 is meshed with the sun gear 62 via the arm 62a. The clockwise rotation of the sun gear 62 causes the arm 62a to swing clockwise, and the planetary gear 63 meshes with the gear 54. Motor 10
The number of teeth of each gear is determined so that the rotation speed of the planetary gears 63 due to the rotation speed is smaller than the rotation speed of the sprocket 53 due to the film transfer.

The camera of this embodiment has a film rewinding drive system, which is driven by manually operating the rewinding lever 65. The rewinding drive system will be described below.

(VII) Rewinding Drive System The rewinding drive system has a drive system common to the above-mentioned cam drive system from the pinion gear 12 provided on the output shaft of the motor 10 to the planet gears 22. The planet gear 22 is meshed with the gear 66 in association with the operation of a rewinding lever 65 described later. The gear 66 is provided with a fork 67 that engages with the film cartridge.

The rewind lever 65 is slidably provided on the camera body,
The spring 49 constantly urges it to the left in the figure. This rewinding lever 65 has an arm 65a, and as can be seen from FIG. 4 (a), an inclined surface 65b is formed on the arm 65a at a position facing the leg portion 22a fixed to the planetary gear 22, When the rewind lever 65 is operated to the right in the figure, the inclined surface 65b presses the leg 22a and the leg 22a
22a is rotated clockwise, and as shown in FIG. 4 (b), the leg portion 22a rides on the flat surface 65c of the arm 65a. At this time, the planet gear 22 meshes with the gear 66.

The film rewinding lever 65 is provided with a locking lever 69, which is constantly urged clockwise by a spring 68, so that the film rewinding lever 65 can swing, and when the lever 65 is operated to the rewinding position, it is imagined in FIG. As shown by the line, the hook 69a of the locking lever 69 is locked to the pin 70a of the reset lever 70 slidably provided on the camera body, whereby the rewinding lever 65 is in that position, that is, in the rewinding position. It is supposed to be locked. The reset lever 70 is constantly urged in the direction of the arrow by a spring 71, but its movement is suppressed by a stopper 72 provided on a camera back cover (not shown).

FIG. 5 is a block diagram of the motor control system in this embodiment. In this embodiment, each drive system is controlled by using forward and reverse rotations of the motor 10 as follows.

Motor forward rotation: film winding (charge of shutter mechanism, etc.) Motor reverse rotation: film rewinding, lens cover opening / closing, lens barrel block feeding / feeding, flash device raising / lowering Referring to FIG. A power supply 102 is connected to a motor control unit 101 that controls rotation, and a motor reverse rotation signal generation unit 103, a motor forward rotation signal generation unit 104, a motor stop signal generation unit 105, and a film end detection signal generation unit 106 are connected. To be done.

The motor reverse rotation signal generator 103 has switches S1 and S2 for detecting the position of the lens position selection lever 40, switches S3 and S4 for detecting the position of the lens barrel block 8, and a switch S5 for detecting the position of the rewind lever 65. .

Switches S1, S2 Referring to FIG. 1, the lever 40 is provided with an arm 40a,
The brush 40b provided on the arm 40a slides on the pattern formed on the printed board 42. The lens retracted position biased by the spring 41 corresponds to the storage position of the lens barrel block 8, and the lens retracted position when the lever 40 is operated to the left in the figure against the spring 41 is the protrusion of the lens barrel block 8. Corresponds to position. As shown in FIG.
A conductor pattern 42a (common pattern), 42b and 42c of a book is formed, a brush 40b indicated by a chain double-dashed line is configured to slide on the conductor pattern 42a, and a switch formed of the conductor patterns 42a and 40b at the lens retraction position P1. S1 is opened, the switch S2 including the conductor patterns 42a and 42c is closed, and the switch S1 is closed but the switch S2 is opened at the lens feeding position P2.

Switches S3, S4 The lens barrel block 8 is moved from the retracted position to the projected position in response to the lens position selection lever 40 being operated from the lens retracted position to the lens extended position. Switch S3 that electrically detects the position of
1 and S4 are constituted by a brush gear 43 having a brush 43a and a printed circuit board 44 facing the brush gear 43, as shown in FIG. The gear 43 is meshed with the gear 23 so that it makes one revolution when the cam member 11 makes one revolution. The brush 43a shown in FIG. The conductor patterns 44a to 44c shown in the figure are formed.
The switch S4 is composed of a and 44b. Note that the pattern
44a is grounded.

FIG. 7 shows the states of the switches S3 and S4 in the lens retracted position, in which case the switch S4 composed of the conductor patterns 44a and 44b is opened and the conductor patterns 44a and 44c are opened.
The switch S3 composed of is closed. Cam member 11 is 18
When the lens barrel block 8 is rotated by 0 degree and protrudes from the camera body to the lens protruding position, the switch
S4 is closed and switch S3 is open.

Switch S5 As described above, the switch S5 is arranged in the sliding area of the lever 65, and the contact piece 70 contacts the contact piece 71 when the lever 65 is operated rightward in the drawing for the rewinding operation. Then, the switch S5 is closed and the motor 10 is rotated in the reverse direction.

The motor stop signal generator 105 has a switch S6 which is closed when one film of film is wound up and a switch S7 which is opened when the film is completely rewound.

Switch S6 Referring to FIG. 1, a switch cam 72 coaxial with the charge gear 56 is constantly in contact with a switch contact 72, and the switch contact 72 is separated from the switch contact 73.
S6 is open. When only one film of film is wound up, the protrusion of the switch cam 58 presses the switch contact piece 72, the switch contact piece 72 contacts the switch contact piece 73, and the switch S6 is closed, whereby the motor 10 is stopped. It has become so.

Switch S7 Referring to FIG. 1, a switch S7 for detecting the end of film rewinding is provided along the film transfer path, and when the film is completely rewound, the switch S7 is opened to energize the motor 10. It is being cut off. That is,
The switch contact piece 74 is constantly biased toward the film surface, and the switch contact piece 74 and the switch contact piece 75 are in contact with each other while the detection pin 76 provided in the contact piece 74 is in contact with the film. Switch S7 is closed, the film is rewound, the detection pin 76 is released from the film, and the switch contact pieces 74 and 75 are separated when the detection pin 76 projects rearward from the film transfer path, and the switch S7 is released. It is configured.

The motor normal rotation signal generation unit 104 outputs a normal rotation signal in response to the operation of the release button, and the end detection signal generation unit 106 detects it when all frames of the film have been photographed. A motor stop reverse rotation signal is output to the motor 10.

The operation of the retractable camera according to this embodiment having the above configuration will be described below.

(I) Opening the cover, projecting the lens, and raising the flash device When the lens position selection lever 40 is manually operated to the left in the figure against the spring 41 in order to switch from the lens retracted position to the lens retracted position, click The claw portion 45b of the lever 45 engages with the recess 40c of the lever 40, which holds the lever 40 at that position, and the brush 40b moves toward the pattern substrate 42.
Sliding up, switch S1 is closed and switch S2 is opened. Now, since the photographing lens is in the retracted position and the lens position detection switch S3 is in the closed state, the motor reverse signal is output to the motor control circuit 101 through the switches S1 and S3 in FIG. start.

When the motor 10 reversely rotates, the rotation is transmitted to the sun gear 17 via the pinion gear 12 and the reduction gear trains 14 to 16. Since the sun gear 17 is rotated counterclockwise, the arm 17a swings counterclockwise and the planet gear 18 meshes with the gear 19. Also gear
The rotation of 19 is transmitted to the sun gear 21 via the gear 20 and its arm
The planet gear 22 meshes with the gear 23 because 21a swings counterclockwise. As a result, the cam member 11 rotates clockwise and the gear 43 also rotates clockwise.

When the cam member 11 rotates clockwise, the rod 28b forming the cover drive system is displaced upward by the inclined surface 25a of the surface cam 25, so that the lever 28 rotates counterclockwise against the spring 29. The drive ring 5 rotates clockwise against the spring 30 according to the movement of the lever 28, and the lens covers 4a and 4b are opened via the rods 3a and 3b.

At this time, the lever 33 of the flash device drive system connected to the drive ring 5 rotates in the counterclockwise direction, so that the gear 34 rotates in the clockwise direction, and the rack 35 rises from the illustrated lowered position to the raised position. This allows the flash device block to be routed through the spring 36.
6c rises (projects) and becomes ready to emit light. here,
When a pressing force is applied to the flash device block 6c from the outside when the rack 35 is raised to prevent the rise, the rack 35 independently rises while contracting the spring 36. Therefore, no unreasonable force is applied to the flash device drive mechanism or the cover drive mechanism, which may affect the opening operation of the protective covers 4a and 4b,
Each drive mechanism is not damaged. Then, when the pressing force is released to the flash device block 6c in this state, the block 6c projects due to the urging force of the spring 36. Further, when a pressing force is applied to the projected flash device block 6c from the outside, the block 6c and the sliding plate 6a are integrally lowered while contracting the spring 36. At this time, the rack 35 does not descend, so that the pressing force is not transmitted to the flash device drive mechanism and the cover drive mechanism, and the protective covers 4a and 4b are closed undesirably or each drive mechanism is damaged. Absent. If the pressing force on the flash device block 6c is released in this state, the spring 36
The flash device block 6c is projected by the biasing force of.

When the cam member 11 is further rotated, the rod 28b rides on the upper surface 25d of the surface cam 25, so that the rotation of the lever 28b is stopped, whereby the rotation of the drive ring 5 is also stopped, so that the covers 4a, 4b.
Is completely opened.

At this time, in the grooved cam 26, the inner peripheral surface outside the grooved portion 26b reaches the immediate vicinity of the pin 31a, and when the cam member 11 continues to rotate, the inner peripheral surface pushes the pin 31a, so that the lever 31 is a toggle spring. It begins to rotate counterclockwise against 38. In association with the movement of the lever 31, the lens barrel block 8 is guided by the rods 7a and 7b to move forward. Lever 31
When the toggle spring 38 exceeds the dead point by further rotating in the counterclockwise direction, the lens barrel block 8 is biased forward by the toggle spring 38, so that the lens barrel block 8 is pinned along the inner peripheral surface of the groove 26b. The lens barrel block 8 further advances while 31a slides. When the groove cam rotates 180 degrees (see FIG. 3 (b)), the projection 8a of the lens barrel block 8 contacts the substrate 1. At this time, the brush 43a has rotated 180 degrees from the state of FIG. 7, the switch S3 is opened and the switch S4 is closed, whereby the motor reverse rotation signal is deenergized and the motor 10 is stopped. Therefore, the rotation of the cam member 11 and the brush gear 43 also stops. In this state, the lens barrel block 8, in other words, the photographing lens is in the projecting position and is biased forward by the toggle spring 38.

(II) When an image is taken by operating the film winding release button, the motor normal rotation signal is output from the motor normal rotation signal generator 104 shown in FIG. The rotation of the motor 10 is the pinion gear 1
2, transmitted to the sun gear 17 via the reduction gear trains 13 to 16. At this time, the sun gear 17 rotates clockwise, so that the arm 17 is rotated.
a swings clockwise. Therefore, the planet gear 18 is replaced by the gear 50.
The rotation of the motor 10 is further transmitted to the spool gear 52 via the gear 51, whereby the film is wound up.

When the sprocket 53 rotates clockwise along with the transfer of the film, the arm 54a provided on the gear 54 integrated with the sprocket 53 swings clockwise, and the planet gear 55 pivotally supported by the arm 54a moves to the charge gear. Mesh with 56. As a result, the sector gear 57 rotates and the charge member 59 is displaced rightward in the figure against the spring 60 to drive the traveling plate 61 provided on the lens barrel block 8, thereby charging the shutter mechanism and the like. Is done. The sector gear 57 rotates further and its notch 57a
When the abutting contact with the rack portion 59a, the charging member 59 is returned to the original position by the spring 60. In parallel with this movement, the cam switch 58 rotates integrally with the charge gear 56, but when one film of film is wound up, the projection of the cam switch 58 is a contact piece.
72 is pressed into contact with contact piece 73, which causes switch S6
Is closed, the motor stop signal is supplied to the motor control circuit 101, and the motor 10 is stopped.

Since the gear 62 that rotates integrally with the gear 50 rotates clockwise and its arm 62a swings clockwise, the planet gear 63 pivotally supported by the arm 62a tries to mesh with the gear 54, but the film Since the rotation speed of the sprocket 53 accompanying the transfer is set to be higher than the rotation speed of the planetary gear 63 transmitted from the motor 10 side and driven, the planetary gear 63 is splashed counterclockwise.

(III) Cover Closing, Lens Storage, Flash Device Storage In this embodiment, the covers 4a and 4b are set by manually returning the lens position selection lever 40 to the lens retracted position.
Can be closed, the lens can be housed, and the flash device block 6c can be housed. At the same time, when the shooting of all the frames of the film is finished, it can be detected and these controls can be automatically performed.

Manual operation When the lens position selection lever 40 held at the lens extension position is operated to the right in the figure against the click force of the click lever 45, in other words, when the first mode is switched to the second mode. The brush 40b swings on the pattern substrate 42 to open the switch S1 and close the switch S2. At this time, the brush gear 43 is stopped at the position rotated 180 degrees from the state of FIG. 7 by the lens projecting operation, the switch S3 is open and the switch S4 is closed. Therefore,
A reverse rotation signal is output from the reverse rotation signal generation unit 103 (see FIG. 5) and is sent to the motor control unit 101.
Starts reverse rotation as in the first mode.

Similarly to the above, the reverse rotation of the motor 10 causes the cam member 11 to rotate clockwise. In the lens protruding state, as shown in FIG. 3B, the rod 28b rides on the upper surface 25d of the surface cam 25, and the pin 31a is located at the boundary between the groove portions 26b and 26c of the groove cam 26. When the cam member 11 rotates clockwise from the state shown in FIG. 3 (b), the pin 31a is pressed against the inner peripheral surface inside the groove 26c, the lever 31 rotates clockwise, and the toggle spring 38 is rotated. Against this, the lens barrel block 8 is retracted from its protruding position toward the storage position. When the lens barrel block 8 retracts and the toggle spring 38 exceeds its dead center, the lens barrel block 8 retracts as the groove cam 26 rotates, and the area of the groove portion 26a of the groove cam 26 reaches the position of the pin 31a. Then, the curvature r of the groove cam 26 becomes constant and the backward movement of the lens barrel block 8 stops, and that state is the lens storage position.

At this time, the starting point of the slope 25c having a downward slope is located in the vicinity of the rod 28b, and when the cam member 11 further rotates, the spring 29
The spring force causes the rod 28b to start descending along its inclined surface 25c, which causes the lever 28 to rotate clockwise. Along with this, the drive ring 5 rotates counterclockwise and the lens covers 4a and 4b are closed. The movement of the drive ring 5 is also transmitted to the flash device drive system described above, and the arm 35a of the rack 35 descending from the ascending position to the descending position causes the flash device block 6c.
The leg portion 6a is directly pressed to lower the flash device block 6c for storage.

When the cam member 11 further rotates and the rod 28b descends to the flat surface 25b of the surface cam 25, the brush 43a of the brush gear 43 becomes as shown in FIG. 7, and the switch S3 is closed and the switch S4 is opened. . At this time, since the lens position selection switch S1 has already been opened, the motor reverse rotation signal is deenergized, whereby the reverse rotation of the motor 10 is stopped.

Automatic command When the film is no longer pulled out after shooting of all frames of the film is completed, the well-known film end detection signal generation unit 106 detects it and supplies a motor stop reverse rotation signal to the motor control unit 101 to stop the motor 10. And reverse it. In response to the reverse rotation of the motor 10, the lens barrel block 8 moves to the lens storage position in the same manner as when the manual command is issued. When the lens barrel block 8 reaches its storage position, the drop lever 46 causes the notch cam 27 of the cam member 11 to move.
In the notch 27a. The click lever 45 rotates counterclockwise in conjunction with the movement, and the click lever 45 has a claw portion.
45b is disengaged from the recess 40c of the lens position selection lever 40, whereby the lens position selection lever 40 is moved to the right in the figure by the spring 41 and returned to the lens retracted position. At this time,
Since the switch S1 is opened, the motor reverse rotation signal is deenergized and the motor 10 stops.

(IV) Film rewinding The rewinding lever 65 resists the spring 49, and the locking lever 69 that is manually operated to the right in the figure also moves to the right integrally. Locking lever 69
When the hook 69a goes over the pin 70a, the locking lever 69 engages with the pin 70a, whereby the rewinding lever 65 is held at the rewinding position. At this time, since the inclined surface 65b of the arm 65a of the rewind lever 65 engages with the leg 22a of the planet gear 22, the planet gear 22 moves clockwise around the rotation axis of the sun gear 21 by moving the rewind lever 65 to the right. Rock to. As shown in FIG. 4 (b), the swing of the planetary gear 22 is stopped at the position where the leg 22a rides on the tip surface 65c of the arm 65a, and the planetary gear 22 meshes with the rewinding gear 66.

On the other hand, the slide switch S5 provided in the swinging region of the rewind lever 65 is closed when the rewind lever 65 is displaced to the rewind position, whereby the motor reverse rotation signal is supplied to the motor control unit 101. Motor 10 starts reverse rotation.

By the reverse rotation of the motor 10, the planet gear 18 meshes with the gear 19 and the rotation of the motor 10 is transmitted to the sun gear 21 as described above. Here, the arm 21a of the sun gear 21 tries to swing counterclockwise, but since the leg 22a of the planet gear 22 is restricted by the arm 65a of the rewind lever 65 as described above, the planet gear 22 is rewound. This meshes with 66, whereby the rotation of the motor 10 is transmitted to the rewinding gear 66, and the film is rewound.

The rewinding of the film causes the spool 9 to rotate, which causes the gear 50 to rotate, causing the gear 62 to rotate counterclockwise via the rod 50a and the arm 62a to swing counterclockwise. Therefore, the planetary gear 63 pivotally supported by the arm 62a is replaced by the sprocket gear 5
Move away from 4. Further, since the sprocket 53 rotates counterclockwise due to the transfer of the film in the rewinding direction, the arm 54a
Swings counterclockwise, which separates the planetary gear 55 from the charge gear 56, so that the charge member 59 does not slide during film rewinding, and the cam switch S6 remains open, that is, opens. Stay in the state.

Here, when the film is completely rewound, the urging force of the film is suppressed by the film.
Is released, the switch S7 is opened, so that the motor stop signal is supplied to the motor control unit 101 and the motor 10
Stops.

When the camera back cover (not shown) is opened to take out the rewound film, the pin 72 also moves accordingly, so that the locking lever 70 held by the pin 72 moves in the arrow direction by the spring 71. As a result, the locking lever 69 is released from the pin 70a, so that the spring 69 returns the rewinding lever 65 to its original position.

In the above embodiment, the cam member 11 is rotated in one direction by using the motor 10 to open / close the lens cover, project the lens, and store the flash device. Alternatively, the cam member may be rotated in the reverse direction to perform the above-described operations. In this case, the cover closing cam surface 25a and the cover opening cam surface 25c of the cam member 11 can be made common, and the lens feeding cam surface 26b and the lens feeding cam surface 26c can be made common. Can be simplified. Further, the cam member may be linearly moved to perform each of the above operations.

Further, instead of the motor 10, the cam member 11 may be driven manually. Therefore, the drive source for driving the cam member 11 includes a manual operation member other than the motor.

Furthermore, the shape of each cam of the cam member is not limited to this embodiment, and the rod 28b may be interlocked with the groove cam or the pin 31a may be interlocked with the surface cam. When the cam member is driven in the first mode, the lens is extended after the lens cover is opened. The lens has a cam surface for opening, a cam surface for opening the cover, a cam surface for extending the lens, and a cam surface for extending the lens. When driven in the second mode, any cam may be used as long as each cam surface is formed of a single cam member so that the lens cover is closed after the lens is housed. As mentioned above,
Needless to say, four cam surfaces are not required when the cam member is normally or reversely rotated, and only two cam surfaces are required.

(Effect of the Invention) According to the present invention, when the protective cover is driven to the closed position, the moving member is moved to the second position to drive the light emitting unit to the near position, and the protective cover is driven to the open position. At this time, the moving member is driven to the first position to drive the light emitting unit to the far position, so that the operability of this type of camera is improved as compared with the conventional one.

Further, in the present invention, since the moving member is configured to be able to move from the second position to the first position independently of the light emitting unit, a pressing force acts on the light emitting unit from the outside when the protective cover is opened or during the opening operation. Even if the projection of the light emitting unit becomes impossible, it is possible to prevent the protective cover from being driven undesirably and the protective cover drive mechanism and the flash device drive mechanism from being damaged. Further, if the pressing force from the outside is cut off, the light emitting portion is automatically projected to the far position by the urging force of the elastic body, so that it is not necessary to perform the operation for projecting the light emitting portion again, and the operability is improved. Can be improved. Furthermore, when the light emitting part is protruding, the protective cover is always in the open position, and when the light emitting part is in the near position without receiving any external force, the protective cover is always in the open position. If you can confirm that the part is in a distant position (you can also confirm from the side or back of the camera),
You can shoot without confirming that the protective cover is open again, and you can prevent forgetting to close the protective cover at the end of shooting.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing each part of a camera according to the present invention,
2 is a front view of the cam member shown in FIG. 1, FIGS. 3 (a) and 3 (b) are plan views of the cam member, FIG. 2 (a) shows a lens storage position, and FIG. Is a diagram showing a lens protruding position, FIGS. 4 (a) and 4 (b) are plan views showing a rewinding drive system, FIG. 5 is a block diagram showing a motor control system of a camera according to the present invention, and FIG. FIG. 7 is a plan view of the lens position selection switch, and FIG. 7 is a plan view of the lens position detection switch. 2: Lens barrel, 3a, 3b: Rod 4a, 4b: Lens cover (protective cover) 5: Drive ring 6: Flash device 7a, 7b: Rod 8: Lens barrel block, 8a: Pin 9: Spool 10: Motor 11: cam member, 24: gear 25: surface cam 25a, 25c: inclined surface 25b: flat surface 26: groove cam 26a to 26c: groove 28: lever 31: lever 31a: pin 33: lever, 34: gear 35: rack , 36: Spring 40: Lens position selection lever 65: Rewind lever, 66: Gear 67: Fork, 101: Motor control unit 103: Motor reverse signal generation unit 104: Motor forward rotation signal generation unit 105: Motor stop signal generation unit 106: Film end detection signal generator S1 to S7: Switch

Claims (1)

[Claims] 1. A protective cover movable between a closed position that covers the front surface of the taking lens and an open position that opens the front surface of the taking lens, and between a near position close to the lens optical axis and a far position away from the lens optical axis. In a flash device built-in type camera including a flash device having a movable light emitting part, and a cover driving means for moving the protective cover between the closed position and the open position, A second protrusion that is engaged with the first protrusion, and the second protrusion engages with the first protrusion when moving from the first position to the second position. A moving member that drives the light emitting unit to a near position and prevents the light emitting unit from moving to a distant position at the second position; and an interposing between a spring receiver formed on the moving member and the first protrusion. Mounted from the second position of the moving member to the first position.
When moving to the position, the first protrusion is pressed to move the light emitting unit to the far position, and when the pressing force to the near position side acts on the light emitting unit at the far position, the light emitting unit is compressed and moves. A compression spring that allows the light emitting unit to move to a near position without moving the member, and the moving member that moves the movable member to the second position in conjunction with the protection cover driving the protective cover to the closed position. Flash device driving means for driving the moving member to the first position in conjunction with driving the protective cover to the open position. camera.