JPH0760240B2 - Retractable camera - Google Patents

Description

Description: TECHNICAL FIELD [0001] The present invention includes a protective cover that allows a taking lens to move along an optical axis and projects onto a moving path of the taking lens to cover the front surface of the taking lens when the camera is not used. It relates to a retractable camera.

(Background of the Invention) In a conventional collapsible camera with a protective cover of this type, when both the protective cover and the taking lens are manually moved, the operation stroke is long and the operation force is heavy, which is not preferable. The photographing lens is generally provided in the lens barrel, and the photographing lens is moved by moving the lens barrel. Therefore, "moving the photographing lens" is expressed by the phrase "moving the lens barrel".

On the other hand, as disclosed in JP-A-59-22039,
In some cases, when the protective cover (slide cover) is manually operated, the lens barrel electrically projects and is housed in response to the manual operation. In this type of camera, when the lens barrel is stored, for example, (1) the lens barrel is configured so that the protective cover can be closed after the lens barrel is moved to the storage position side from the operating area of the protective cover. Prevent the movement of the operating member for operating the protective cover from being transmitted to the protective cover until it comes out of the operating area of the protective cover, or
(2) The protective cover is always biased in the closing direction by a spring or the like, and the protective cover is brought into contact with the lens barrel when the lens barrel is protruding. I'm trying to close it.

However, in the case of the above (1), a stroke for projecting or housing the lens barrel is required in addition to the stroke for opening and closing the protective cover, and the operation stroke of the protective cover becomes long, which is a problem from the viewpoint of operability. There is. In addition, in the case of (2), the peripheral surface of the lens barrel is scratched, and the opening and closing of the cover and the projection and storage of the lens barrel are controlled by operating the protective cover itself. ) Is difficult to operate as well.

(Object of the Invention) In order to solve such a conventional problem, an object of the present invention is to synchronize the driving means of the protective cover and the photographing lens without interlocking the photographing lens with the movement of the opening / closing operation of the protective cover itself. Therefore, the object is to provide a retractable camera with excellent operability.

(Summary of the Invention) The present invention includes a protective cover driving unit, a lens driving unit, a protective cover controlling cam unit, and a lens controlling cam unit, and two control cam units are integrally formed and driven. The source drives those cams. The drive source is driven in the first and second modes. In the first mode, the cover control cam means drives the cover drive means to move the protective cover from the closed position to the open position, and then the lens control cam means. Cooperates with the lens driving means, whereby the photographing lens moves to a position away from the image pickup surface. In the second mode, the lens controlling cam means drives the lens driving means to move the photographing lens to a position close to the image pickup surface, and then the cover controlling cam means cooperates with the cover driving means, whereby the protective cover is provided. Moves from the open position to the closed position. At least one of the cover driving means and the lens driving means is displaced in the direction along the rotation axis of the rotating member.

(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 image pickup surface, and then a conversion lens is placed between the master lens and the image pickup surface, and during wide-angle shooting, the conversion lens is retracted from the optical axis of the lens before mastering. This includes the concept 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.

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 long holes 1b, and fulcrums A1 and A2 are attached to one end of each rod.
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, and a flash device (not shown) is connected to the drive ring 5. Here, the drive ring 5 is a member constituting a cover drive system which will be described in detail later, and the covers 4a and 4b are opened and closed by the rotation of the drive ring 5 around the optical axis.

Further, rods 7a and 7b are erected on the substrate 1 and the rods 7a and 7b are erected.
Is a lens barrel block 8 provided with a lens barrel 2, a shutter mechanism (not shown), a focus adjustment mechanism (not shown), and the like.
And the rod 7b is fitted in the U-shaped groove provided in the block 8, and thereby the block 8 is slidably held. 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 is fitted 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 pivotally supported by the substrate 1 via a shaft portion 28a, and one end of the lever 28 is parallel to the lens cover holding rods 3a, 3b. An extending rod 28b is provided, and the tip of the rod 28b is engageable with the surface cam 25. 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 engagement state 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 rotatably attached to the camera body about 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. Lever 3
1 has an elongated hole 31b, and a 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.

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 closing 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 is displaced 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 when the lens barrel block 8 is rotated in the direction of the arrow from there to reach the state shown in FIG. 3B, the lens barrel block 8 is held at the lens protruding position. .

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 extension position to the lens extension position corresponding to the second mode, the lever 40 may be manually operated in the reverse direction of the arrow, but as will be described later,
At the end of the operation of storing the lens barrel by detecting the end of shooting of all the films, the mode is automatically switched to the second mode, that is, the lens retraction position.

Further, in relation to the lens position selection lever 40, a click lever 45 and a depression lever 46 are coaxially supported by the camera body. 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, a spring 47 is hooked on the spring hooking pins 45a and 46a of both levers 45 and 46, which causes the click lever 45 to move clockwise and the depression lever 46a.
Is biased counterclockwise. Since the clockwise biasing force applied to the click lever 45 by the spring 47 is stronger than the counterclockwise biasing force by the spring 48, the claw portion 45b of the click lever 45 is attached to the side wall 4 of the lens position selection lever 40.
0b and when the lens position selection lever 40 is operated to the left in the figure, the claw portion 45b engages with the recess 40c in 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 portion 46b is disengaged from the recess 40c of the lens position selection lever 40, whereby 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.

The flash device drive system, the film winding drive system, and the film rewinding drive system are not related to the present invention, and therefore their explanations are omitted.

FIG. 4 is a block diagram of the motor control system in this embodiment. In this embodiment, the forward and reverse rotations of the motor 10 are used as follows to control each drive system.

Referring to FIG. 4, a power supply 102 is connected to a motor drive unit 101 that controls the rotation of the motor 10, and a motor reverse rotation signal generation unit 103, a motor forward rotation signal generation unit 104, and a motor stop signal generation unit 105. And film end detection signal generator 106
Are connected respectively.

The motor reverse signal generator 103 includes 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 for detecting the position of a rewind lever (not shown). Have S5.

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 including the conductor patterns 42a and 42b 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. This 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-44c shown are formed, and in the patterns 44a and 44c, the switch S3 is
The switch S4 is composed of a and 44b. Note that the pattern
44a is grounded.

FIG. 6 shows the states of the switches S3 and S4 in the lens retracted position. In this case, the switch S4 composed of the conductor patterns 44a and 44b is opened, and the conductor patterns 44a and 44c.
The switch S3 composed of is closed. Cam member 11 is 18
When the lens barrel block 8 is rotated by 0 degrees and moves to the lens protruding position where the lens barrel block 8 protrudes from the camera body, the switch
S4 is closed and switch S3 is open.

The switch S5 is a switch that is closed in response to an operation of a rewinding lever (not shown), and thereby the motor 10 reversely rotates to rewind the film.

The film end detection signal generation unit 106 detects the end of photographing of all frames of the film and outputs a motor stop reverse rotation signal to the motor 10. As a result, the lens barrel block 8 is automatically driven to the storage position and the lens covers 4a and 4b are closed.

The motor normal rotation signal generation unit 104 outputs a normal rotation signal in response to the operation of the release button. In addition, the switch S6 of the motor stop signal generator 105 turns on the motor 1 in response to the hoisting command.
0 is rotated in the normal direction and is closed in response to winding up one frame of film, whereby the motor 10 is stopped. on the other hand,
The switch S7 is opened in response to the motor 10 being reversely rotated by the rewinding command and the film being completely rewound, whereby the motor 10 is stopped.

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

(I) Opening the cover and projecting the lens When the lens position selection lever 40 is manually operated to the left in the figure against the spring 41 in order to switch the lens retracted position to the lens retracted position, the claw portion of the click lever 45 is operated. 45b engages with the recess 40c of the lever 40, which holds the lever 40 in that position and causes the brush 40b to move to 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, a 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.

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 31a is a toggle spring. It begins to rotate counterclockwise against 38. The lens barrel block 8 is interlocked with the movement of the lever 31a.
Is guided by rods 7a and 7b and moves forward. When the lever 31 further rotates in the counterclockwise direction and the toggle spring 38 exceeds its dead center, the lens barrel block 8 is biased by the toggle spring 38, so that the lens barrel block 8 is pinned along the inner peripheral surface inside 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. 6, the switch S3 is opened and the switch S4 is closed, whereby the motor reverse 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) Cover Closing, Lens Storage In this embodiment, by manually returning the lens position selection lever 40 to the lens retracted position, the cover 4a and
You can close the 4b and store the lens,
When the shooting of all the frames of the film is completed, 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 a position rotated 180 degrees from the state of FIG. 6 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. 4) 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 the inclined surface 25c thereof, which causes the lever 28 to rotate clockwise. Along with this, the drive ring 5 rotates counterclockwise and the lever covers 4a and 4b are closed.

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. 6, 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 of the cam member 11 to move.
It falls into the notch 27a of 27. The click lever 45 rotates counterclockwise in conjunction with the movement and the click lever 45
The claw portion 45b is disengaged from the concave portion 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 is stopped.

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, store the flash device, and store the flash device. Reverse to rotate the cam member forward and backward,
Thereby, the above-mentioned operations may be performed. 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 26c can be made common. It can be simplified. Alternatively, 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 cover extends, the cover opening cam surface, the lens retracting cam surface, and the lens extending cam surface. 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 described above, needless to say, four cam surfaces are not necessary when the cam member is normally or reversely rotated, and only two cam surfaces are required.

(Effect of the Invention) In the present invention, the cover control cam means and the lens control cam means that are integrally formed are driven by the drive source that is driven in the first and second modes. Sometimes, the cover control cam means drives the cover drive means to move the protective cover from the closed position to the open position, and then the lens control cam means cooperates with the lens drive means.
As a result, the photographing lens moves to a position away from the image pickup surface, and in the second mode, the lens driving cam means drives the lens driving unit to move the photographing lens to a position close to the image pickup surface, and then for cover control. The cam mechanism cooperates with the cover driving mechanism to move the protective cover from the open position to the closed position, which improves the operability of the retractable camera with the protective cover and opens and closes the protective cover. The separation and contact of the lens from the image pickup surface, that is, the projection and the storage of the photographing lens can be synchronized very easily and surely. Further, in the present invention, the cover controlling cam means and the lens controlling cam means are integrally formed, and at least one of the cover driving means and the lens driving means is
Since the rotating member is displaced in the direction along the rotation axis, the cover driving means and the like can be easily housed in the camera body. That is, the cover driving means and the lens driving means can be displaced not only on the surface on which the rotating member is placed, but also in the direction along the rotation axis. The upper, lower, left, and right empty areas around the inner rotating member can be effectively used.

[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 the lens storage position, and FIG. Is a diagram showing a lens protruding position, FIG. 4 is a block diagram showing a motor control system of a camera according to the present invention, FIG. 5 is a plan view of a lens position selection switch, and FIG. 6 is a plan view of a lens position detection switch. is there. (Explanation of symbols of main parts) 2: Lens barrel, 3a, 3b: Rod 4a, 4b: Lens cover (protective cover) 5: Drive ring 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 40: Lens position selection lever 101: Motor control unit 103: Motor reverse rotation signal generation unit 104: Motor forward rotation signal generation unit 105: Motor stop signal generation unit 106: Film end detection signal generation unit S1 to S7: Switches

Claims (2)

[Claims] 1. A photographic lens in which at least a part of the lens system can take two positions, a lens proximity position close to the image pickup surface and a lens separation position distant from the image pickup surface, and a photographic lens projecting on a movement locus of the image pickup lens. A protective cover that is movable between a cover closed position that covers the front surface and a cover open position that retracts from the locus to open the front surface of the taking lens; and moves the protective cover between the cover closed position and the cover open position. A retractable camera comprising: a cover driving means; a lens driving means for moving the taking lens between the lens approaching position and the lens separating position; and a drive source for the cover driving means and the lens driving means. And a lens drive driven by the drive source, and a cover control cam means driven by a power source to control the cover drive means. ; And a lens controlling cam means for controlling the stage, the driving source first
And driving in the second mode, and in the first mode, the cover drive means is driven by the cover control cam means to move the protective cover from the cover closed position to the open position, and then the lens. The control cam means drives the lens drive means to move the photographing lens from the lens approaching position to the distant position. In the second mode, the lens control cam means drives the lens driving means to drive the lens. After moving the taking lens from the lens separation position to the close position, the cover driving cam unit drives the cover driving unit to move the protective cover from the cover opening position to the closing position, and at the same time, the cover controlling cam unit. And the lens control cam means are integrally formed on a rotary member driven by the drive source, and the cover drive Collapsible camera, characterized in that for displacing the at least one in the direction along the rotation axis of the rotating member of the stage and the lens driving unit. 2. A cover closing cam surface and a cover opening cam surface are formed on the cover control cam means, and a lens retraction cam surface and a lens retraction cam surface are formed on the lens control cam means. And the drive source is a motor, and in the first mode, the rotating member rotates the cover controlling cam means and the lens controlling cam means around the rotating shaft by a predetermined angle to form the cover. After moving the protective cover to the cover open position by cooperating the opening cam surface with the cover driving means, the feeding cam surface is cooperated with the lens driving means to move the photographing lens to the lens separation position. In the second mode, the cover control cam means and the lens control cam means are rotated in the same rotation direction as in the first mode to move the lens. And moving the photographing lens to the lens proximity position by cooperating the lens surface with the lens driving means, and moving the protective cover to the cover closing position by cooperating the cover closing cam surface with the cover driving means. The retractable camera according to claim 1, wherein