JPS6269254A - Collapsible barrel type camera - Google Patents

Abstract

PURPOSE:To attain synchronization easily and securely in projecting and storing a photographic lens by allowing a cam means for lens control to moves the photographic lens to a position nearby an image pickup surface in cooperation with a lens driving means after a protection cover is moved from a closure position to an opening position, and then allowing a cam means for cover control to operate is cooperation with a cover driving means. CONSTITUTION:A driving system is driven in the 1st and the 2nd mode in response to the operation of a lens position selection lever 40. In the 1st mode, the cam means for cover control drives a cover driving means to move the protection cover from the closure position to the opening position and then the cam means for lens control cooperates with the lens driving means, so that the photographic lens is moved to a position distant from the image pickup surface. In the 2nd mode, the lens driving means is driven by the cam means for lens control to move the photographic lens to a position close to the image pickup surface, and then the cam means for cover control cooperates with the cover driving means, thereby moving the protection cover from the opening position to the closure position.

Description

[Detailed description of the invention]

(Technical field of the invention) Unexploded 1rJl means that the photographing lens is movable along the optical axis and when using the camera #3 = the movement of the photographing lens fP)L
This invention relates to a type 1-1 camera that is equipped with a protective cover that covers the front surface of the lens. (Sound of invention 1; 7) In the conventional 5-sink 114-type camera with a protective cover of this kind, the protective cover and IJ! When moving the shadow lens together by motion, the operating stroke should be Lv:<
And the operating force is not 1-<<&f. Note that since the taking lens is generally mounted on a lens barrel and the taking lens is moved by moving this lens barrel, "movement of the taking lens" is expressed as "movement of the lens barrel."・As disclosed in Japanese Unexamined Patent Publication No. 58-22039, when the cover 14 (slide cover) is operated by a young child, the lens barrel is driven to protrude and retract in response. In this type of camera, when the lens barrel is stored, the protective cover can be opened after the lens barrel moves to the storage position side from the operating area of the protective cover. ) The movement of the operating member for operating the protective cover is not transmitted to the protective cover until the lens barrel is removed from the operating area of the protective cover, or (2) the protective cover is always attached with a spring or the like in the closing direction. When the lens barrel is protruding, the protective cover is brought into contact with the lens mirror t1, and when the lens barrel is retracted, the protective cover is closed. ), in addition to the stroke for opening and closing the protective cover, a stroke for protruding or retracting the lens mirrors t and 'i is required, resulting in a long operation stroke for the protective cover, which causes a problem from 1- in terms of operability. In addition, in the case of (2), the opening and closing of the cover and the protrusion and retraction of the lens barrel are controlled by operating the protective cover itself. Therefore, as in (1), there is a difficulty in operability. (Objective of the Invention) In order to solve such conventional problems, the purpose of the present invention is to develop a method of photographing the movement of the opening/closing operation of the protective cover itself. An object of the present invention is to provide a sunken camera with excellent operability by synchronizing the driving means of the protective cover and the photographing lens without interlocking the cedar lens. The two control cam means are integrally formed, and the cams are driven by a drive source. The drive source is driven in the first and second modes, and in the first mode 1+j,
After the cover control cam f stage drives the cover drive means to move the protective cover from the closed position to the open position, the lens control cuff V i stage cooperates with the lens drive means, thereby moving the photographic lens away from the imaging surface. Move to a remote location. On the second mode plane, after the lens control cam means drives the lens drive means to move the photographic lens to a position close to the imaging surface, the cover control cam means drives the cover drive +Iy.
[in conjunction with the closing, which moves the protective force from the open position to the closed position. (Embodiment) Fig. 1 shows an embodiment of the camera according to the present invention. ) Projection and storage of the lens barrel, (C) Projection and storage of the flash unit's light emitting section, and storage (D) Film winding (E) Charging of the shutter mechanism, etc. (F) Film rewinding is controlled. Throughout this specification, protruding the lens barrel means moving the photographing lens installed in the lens barrel together with the lens barrel to a remote position away from the imaging surface, and retracting the lens barrel means , means moving the photographing lens together with the lens barrel to a close position close to the imaging surface, and does not necessarily mean that the lens barrel is completely retracted within the camera body and cannot be used for photography. For example, conversion with a master lens The photographic lens is composed of the lens and
For telephoto shooting, the conversion lens is placed between the master lens and the imaging surface at F, which moves the master lens to a remote position away from the imaging surface, and for wide-angle shooting, the conversion lens is placed between the master lens and the imaging surface, and for wide-angle shooting, the conversion lens is moved from the optical axis of the lens. It includes the concept of moving the lens to a close position close to the imaging surface, and also includes the case where the lens barrel protrudes from the camera body in the stored state. In Fig. 1, a substrate l fixed to a camera body (not shown) has a lens barrel 2 (indicated by two-dot chain lines in Figs. 3(a) and (b)) on which a photographic lens is mounted. An opening 1a larger than the diameter is made, and two holes are made around the opening 1a.
Two elongated holes 1b are drilled. Rod 3 is in the long hole 1b.
a and 3b are inserted through the rods, and lens covers 4a and 4b, which are rotatable about fulcrums AI and A2, respectively, are held at one end of each rod. Here, the lens covers 4a and 4b function as a protective cover that covers the front surface of the photographic lens. The other end of the rod is connected to a drive ring 5, which will be described later, and a flash device (not shown) is connected to this 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 rotation of the drive ring 5 around the optical axis. Further, rods 7a and 7b are erected on the substrate l, and the rods 7a are connected to the lens barrel 2. A lens barrel block 8 provided with a shutter mechanism (not shown) and a focus adjustment W1m structure (not shown) is fitted through the lens barrel block 8, and the rod 7b is fitted into a U-shaped groove provided in the block 8. is slidably held. Therefore, the lens barrel block 8 moves the rods 7a, 7bl- back and forth along the optical axis by a lens drive system, which will be described later, so that the photographing lens can come into contact with the film surface serving as the imaging surface. Next, each of the two drive systems will be described in detail. here,
The cover drive system and lens drive system are on the film spool 9.
It has a common cam member 11Q that is rotationally driven by a motor IO provided in the cam member 1.
Since the power transmission mechanism up to 1 is common, the transmission mechanism will be referred to as a cam drive system and will be described first. (I) Binion gear 12 attached to the output shaft of the cam drive system motor 10
is meshed with a reduction gear 13, and the reduction gear 13 is connected to a sun gear 17 via reduction gear trains 14 to 16 arranged to sequentially transmit rotation. A planetary gear 18 is pivotally supported on an arm 17a attached to the sun gear 17, and the planetary gear 18 is configured to mesh with a reduction gear 19 when the motor is reversed. Reduction gear 19 is connected to sun gear 21 via reduction gear 20. Sungear 21 has arm 21a
A planetary gear 22 is provided through the holder, and is connected to a gear 23 when the motor is reversed, except when rewinding the film, which will be described later. The gear 23 is the gear 2 provided on the shaft of the cam member 11.
4 to rotationally drive the cam member 11. The gear 23 is also meshed with a brush gear 43, which will be described later. The cam member 11 includes a surface cam 25 as a cover control partner 11 means formed on the uppermost circumferential surface, a groove cam 26 as a lens control cam means formed on the uppermost surface, and a central portion. It has a gear 24 and a notched cam 27 at the bottom, and a zero-plane cup 25 is connected to the cover drive system, and a grooved cam 26 is rotatably supported on the camera body at the end of rotation about a fulcrum A5. 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 that is pivotally supported by the knob l through a shaft portion 28a, and one end of the lever 28 is provided with a load 3a for holding the lens cover. A rod 28b is provided extending in rows 3b and t. The tip of the rod 28b can be engaged with the surface cam 25. Further, a rod 28e extending on the opposite side of the rod 28b is provided at the other end of the lever 28.
8c is inserted into the long hole 5a of the drive ring 5. The lever 28 is constantly biased clockwise around the shaft portion 28a by a spring 29. Two elongated holes 5b and 5e are further drilled in the drive ring 5, and rods 3a and 3b mounted on the lens covers 4a and 4b, respectively, are inserted into each of the elongated holes. Drive ring 5 supported in this way
is normally biased counterclockwise by the spring 30, but can be rotated clockwise and counterclockwise around the optical axis depending on the engagement state between the surface cam z5 and the rod 28b.
The covers 4a and 4b are rotated clockwise by the drive ring 5.
is opened and the cover 4a is rotated counterclockwise. 4b is configured to close. (m) Lens drive system The lens drive 1υJ system has a lever 31 attached to the camera body rotatably around a fulcrum A3.
A bottle 31a standing upright at one end of the bottle 1.2 is loosely fitted into the groove 1.2G. The lever 31 has an elongated hole 31b, into which a bottle 8a erected on the bottom surface of the lens barrel block 8 is inserted. The other end of the lever 31 has a hook 1.
1- Bin 31e is provided and a hook 11 provided on the camera body. A toggle spring 38 is provided between the = portion 32 and the toggle spring 38 . The lever 31 is driven around the fulcrum A3 as the grooved cam 26 rotates, and the lever 31 rotates 17 in the counterclockwise 1-1 direction.
The lens barrel block 8 is projected, rotates in one direction, and is housed. In other words, the lens barrel block 8 is configured to move between a remote position away from the film plane and a close position close to the film plane. Next, the cam member 11 will be explained. As shown in FIG. 2, the surface cam 25 is formed along the periphery of the outermost part of the cam member, and has an inclined surface 25 which is a cam surface for opening the cover.
5a and +fi connected to it! +n125b, and an inclined surface 25c which is a cover closing cam surface and has a slope opposite to that of the inclined surface 25a, and when the block 8 is in the storage position, the rod 28b
The tip of is located away from f and Iii plane 25& by a distance Δh. Therefore, when the surface cam 25 rotates in the direction of the arrow, the rod 28b displaces in the L direction while contacting the inclined surface 25a and descends along the inclined surface 25e (by the spring force of the spring 29), thereby causing the drive ring 5
The opening and closing of the lens covers 4a and 4b is controlled via. As shown in FIGS. 3(a) and 3(b), the grooved cam 26 is a substantially elliptical groove having a center point eccentric from the rotation center A5 of the cam member 11.
5 and a groove 26a with a constant curvature of radius r centered at 5, and a groove 26a having a constant curvature with a radius r centered at 5, and a groove 26a having a constant curvature centered at 5, and a groove l. 6 rotates, the curvature of the groove portion 26b, which is a cam surface for lens stepping, where the bottle 31a comes into contact with the outer inner circumferential surface, and the curvature of the groove portion 26b gradually increases as the bottle 31a rotates. The bottle 31a has a groove 26e which is a cam surface for lens loading that comes into contact with the inner circumferential surface on the inside, and in the state IE shown in FIG. , held at 21,
When the lens 9tJ,t,1 block 8 is rotated in the direction of the arrow from there to the state shown in FIG. 3(b), the lens 9tJ,t,1 block 8 is held at the lens protruding position. The two connected drive systems are driven in a first mode and a second mode in response to the operation of the lens position selection lever 40. Below, I will discuss five points regarding this point. A 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. The tip of this lever 40 extends to the camera body 39 and is provided with a knob 40d. By operating the knob 40d in the direction of the arrow shown in the figure, the lens position selection lever 40
0 position can be switched to the lens extension position corresponding to the first mode. From this lens protrusion Bt position to the lens retraction position corresponding to the second mode! 1FJJI
! To do this, you can manually operate this lever 40 in the opposite direction of the arrow, but as will be described later, when the end of shooting all the films is detected and the operation of retracting the lens barrel is completed, the second lever 40 is automatically activated. mode, that is, the lens retraction position. Also, in relation to the lens position selection lever 40, a click lever 45 and a drop lever 46 are coaxially supported on the camera body. The A retraction lever 46 is constantly biased counterclockwise by a spring 48, and it is
It acts on the click lever 45 via 6c to bias the click lever 45 in the counterclockwise direction. On the other hand, the spring-loaded IF bins 45a and 46 of both levers 45 and 46
A spring 47 is applied to a, thereby urging the click lever 45 clockwise and the drop lever 46 counterclockwise. Therefore, the clockwise urging force applied to the click lever 45 by the spring 47 is stronger than the counterclockwise urging force applied by the spring 48, so that the claw portion 45b of the click lever 45 is pressed against the side wall 40b of the lens position selection lever 40. When the lens position selection lever 40 is moved to the left in the figure, the claw portion 45b engages with the four side wall portions 40c of the lens position selection lever 40 to move the lens position selection lever 40 to the first mode. The lens is configured to be held at a lens extending position corresponding to the lens. On the other hand, the claw portion 46b at the tip of the falling lever 46 is pressed against the circumferential surface of the notched cam 27 of the cam member 11, and when the notched cam 27 rotates to the lens storage position, it falls into the notched portion 27a and this In charge! The click lever 45 is driven counterclockwise via the E portion 46c, and the click lever 45 is disengaged from the claw portion 45b7 (four portions 40c of the lens position selection lever 40), so that the lens position selection lever 40 is released from the spring 41.
Accordingly, the lens is returned to the retracted position corresponding to the second mode. Note that the flash device drive system, film ahgA drive system, and film rewind drive system are not related to the present invention, and therefore a description thereof will be omitted. FIG. 4 is a block diagram of the motor control system in this embodiment. In this embodiment, each drive system is controlled using forward and reverse rotation of the motor 1O as follows. Referring to FIG. 4, an 'ilf source 102 is connected to a motor control unit 101 that controls the rotation of the motor IO, and a motor reverse signal generation unit 103. Motor forward rotation signal)
The generator 104, the motor stop signal generator 105, and the film end detection signal generator 10B are connected to each other. The motor reversal signal generation unit 103 selects lens position 1/<-
Switches SL and S2 detect the 40 position, and switches S3 and S detect the 8 position of the lens barrel block.
4. and a switch S5 that detects the position of a rewind lever (not shown). (2) Switches St, S2 2's Referring to the figure, an arm 40a is sunk into the lever 40, and a brush 40b provided on the arm 40a slides on a pattern formed on a printed circuit board 42. The lens retraction position biased by the spring 41 corresponds to the retracted position of the lens barrel block 8, and the lens extension position when the lever 40 is operated to the left in the figure against the spring 41 corresponds to the protrusion of the lens barrel block 8. Corresponds to the position. As shown in FIG. 5, there are three conductor patterns 42a on the printed circuit board 42.
(common pattern), 42b and 42e are formed, and the brush 4Ob, which is 71s indicated by the two-dot chain line, slides on the 1-,

[/Ns transfer rank 2? At Pl, switch SL consisting of conductor patterns 42a and 42b is opened, switch S2 consisting of conductor patterns 42a and 42e is closed, and at lens extension position iP2, switch SL is opened.
l is closed but switch S2 is open. (Mountain switch $3.S4 In response to the lens position selection lever 40 being operated from the lens recording position to the lens extending position δ, the lens barrel block 8 is moved from the retracted position l to the extended position. Switches S3 and S4 that electrically detect the position of the lens barrel block 8 are connected to a brush gear 43 having a brush 43a and a printed circuit board 4 facing the brush gear 43, as shown in FIG.
It consists of 4. This gear 43 has a force of 1 and a member of 11.
The brush 43a shown in FIG. 1 is meshed with the gear 23 so that it rotates once when the
is attached, and conductor patterns 44a to 44e shown in FIG. 6 are formed on the printed circuit board 44, and the pattern 44
A and 44e constitute a switch S3, and patterns 4Aa and 44b constitute a switch S4. Note that the pattern 44a is grounded. Figure 6 shows switches S3 and S in the lens storage position.
4, in which conductor patterns 44a and 44.4 are shown. The switch S4 made up of conductor patterns 44a and A4e is opened, and the switch S3 made up of conductor patterns 44a and A4e is opened.
is closed. When the force I member 11 rotates by 180 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 the switch S3 is opened. Note that the switch S5 is a switch that is closed in response to the operation of a rewind lever (not shown), thereby causing the motor 1O to rotate in reverse to rewind the film. The film end detection signal generating section 10G detects when all the frames of the film have been photographed and outputs a motor stop signal 1--reverse signal '-) to the motor 10. As a result, the lens mirror 1 block 8 is automatically driven to the storage position, and the lens cover 4a is also moved. 4b is closed. The motor IE rotation signal generating section 104 outputs an 11 mm rotation signal in response to the operation of the release button. In addition, the switch S6 of the signal light generating section 105 for stopping the motor is closed in response to the fact that the motor 10 rotates forward due to the first winding finger and burns the first frame of the film. Motor 10 is stopped. on the other hand. The switch S7 is opened in response to the rewind command causing the motor 10 to rotate in reverse and the film to be completely rewound, thereby stopping the motor 10. The operation of the retractable camera according to this embodiment configured as described above will be described below. (I) Open the cover and move the lens from the protruding lens edge position to the lens extending position! , l] When the lens position 21 selection lever 40 is manually operated to the left in the figure against the spring 41, the lens position 21 is changed to -45.
The claw portion 45b engages with the fourth part 40c of the holder A-40, thereby holding the holder A-49 in that position,
The brush 40b slides on the pattern board 42, the switch S1 is closed, and the switch S2 is released.
The photographic lens is in the storage position and the lens position detection switch S is pressed.
3 is in a closed breath, so switch S is turned on in Fig. 4.
1 and S3, a motor reversal signal is output to the motor control circuit 101, and the motor IO begins to reverse. When the motor 10 reverses, its rotation is caused by the rotation of the vinyl gear 12.
It is transmitted to sun gear 17 via reduction gear trains 14-16. Since the sun gear 17 is rotated counterclockwise, the arm 17
a swings counterclockwise, and the planetary gear 18 meshes with the gear 19. Further, the rotation of the gear 19 is transmitted to the sun gear 21 via the gear 20, and its arm 21a swings counterclockwise, so that the M star gear 22 meshes with the gear 23. the result,
As the cam member 11 rotates clockwise, the gear 43
also rotates clockwise. When the cam member 11 rotates clockwise, the rod 28b constituting the cover drive system moves the inclination Ini 25 of the surface cam 25.
Since the lever 28 is displaced upward by the spring 29
Rotate counterclockwise against the According to the movement of this lever 28, the drive ring 5 is moved by the spring 30.
The lens covers 4a and 4b are opened via the rods 3a and 3b. When the cam member 11 rotates further, the rod 28b moves to the surface cam 2.
The lever 28b is placed on the -L surface 25d of 5, so the rotation of the lever 28b is stopped, and thereby the rotation of the drive ring 5 is also stopped.
Thus, the covers 4a and 4b are completely opened. At this time, in the grooved cam 26, the outer inner peripheral surface of the first part 26b has reached the immediate vicinity of the pin 31a, and as the cam member 11 continues to rotate, the inner peripheral surface pushes the pin 31a, so the lever 31a It begins to rotate counterclockwise against the toggle spring 38. In conjunction with the movement of the lever 31a, the lens barrel block 8 is guided by the rods 7a and 7b and moves forward. When the lever 31 further rotates counterclockwise and the toggle spring 38 passes its dead center, the lens tQt='J block 8 is biased by the toggle spring 38 and rotates along the inner peripheral surface inside the groove 26b. While the pin 31a is sliding, the lens barrel block 8 is further advanced by 1 it. When the grooved cam rotates 180 degrees (see Figure 3(b)), the lens barrel block 8
The protrusion 8a is on the board l! ! Contact with I. At this time, the brush 43a is in the state shown in FIG. 6! The switch S3 is opened and the switch S4 is closed, which de-energizes the motor reverse signal and stops the motor lO.
Therefore, the rotation of the cam member 11 and the brush gear 43 is also IE. In this state, the lens barrel block 8,
In other words, when the photographic lens is in the protruding position, the toggle spring 3
8 is biased forward. (II) Opening the cover and storing the lens In this embodiment, by manually returning the lens mirror selection lever 40 to the lens storage position, the covers 4a and 4b can be closed and the lens can be stored. It is possible to detect when all frames have been photographed and automatically perform these controls. ■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, the first mode is switched to the second mode. Then, the brush 40b swings the pattern board 421- to open the switch S1 and close the switch S2. At this time, due to the lens projecting operation, the swing gear 43 is stopped at a position rotated by 180 degrees from the state shown in FIG. 6, and the switch S3 is opened and the switch S4 is closed. Therefore, a reverse rotation signal is output from the reverse rotation signal generating section 103 (see FIG. 4) and sent to the motor control section 101, whereby the motor 1O starts reverse rotation as in the first mode. -1 As described above, the cam member 11 rotates clockwise due to the reverse rotation of the motor IO. In the lens protruding state, as shown in FIG. 3(b), the rod 28b rests on the surface 25d of the surface cam 25, and the pin 31a rests on the grooved cam 2.
It is located at the boundary between groove portions 26b and 26c of No.6. Therefore, when the cam member 11 rotates clockwise from the state shown in FIG. The lens barrel block 8 is moved back from its protruding position toward the storage position against the force. When the lens barrel block 8 retreats and the toggle spring 38 passes its dead center, the lens barrel block 8 retreats as the grooved cam 26 rotates, and the region of the groove 26a of the grooved cam 26 reaches the position of the pin 31a. Then, the curvature r of the grooved cam 26 becomes constant, and the lens barrel block 8 stops retreating, and this state is the lens storage position. At this time, the starting point of the inclined surface 25c of the tri-slope is the rod 28.
When the cam member 11 rotates further, the spring force of the spring 29 causes the rod 28b to move toward its inclined surface 2.
5c, the lever 28 rotates clockwise. Along with this, the drive ring 5 rotates counterclockwise and the lever covers 4a and 4b are closed. The cam member ti rotates further and the rod 28b moves to the surface cam 25.
When the brush 43a of the brush gear 43 becomes as shown in FIG. 6, the switch S3 is closed and the switch S4 is opened. At this time, since the lens position selection switch Sl has already been opened, the motor reversal signal is deenergized, thereby stopping the motor 10 from reversing. (When all the frames of the automatic force command film have been photographed and the film is no longer pulled out, the well-known film end I @ detection signal generator 10
G detects this and sends motor control unit +01 to motor stop 1.
- Supplying a reverse rotation signal to stop the motor 10 and reverse the motor 10; In response to this reverse rotation of the motor IO, the lens mirror t) block 8 moves to the lens storage position in the same manner as in the manual command described above. When the lens barrel block 8 reaches its storage position, the drop lever 46 falls into the notch 27a of the notch cam 27 of the cam member 11. In conjunction with this movement, the click lever 45 rotates counterclockwise. The claw portion 45b of the click lever 45 is disengaged from the fourth portion 40e of the lens position selection lever 40, and the lens position selection lever 40 is thereby moved to the right in the figure by the spring 41 and returned to the lens retraction position. At this time,
Since the switch SL is opened, the motor reverse signal is deenergized and the motor 10 is stopped. In the embodiment 1-1 below, the cam member 1 is moved using the motor IO.
1 in one direction to open/close the lens cover, protrude and store the lens, and protrude and store the flash device. However, by rotating the motor in the forward and reverse directions, the cam member
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,
Further, the lens feeding cam surface 26b and the lens feeding cam surface 26c can be made common, and the cam member can be simplified. Further, each of the above-mentioned operations may be performed by linearly moving the cam member. Further, the cam member it may be manually driven in place of the motor 10. Therefore, the drive source for driving the cam member 11 includes manually operated members 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 made to interlock with a grooved cam, or
The bin 3La may be linked with a surface cam, and in any case, it has a cover closing cam surface, a cover opening cam surface, a lens loading cam surface, and a lens feeding cam surface, and the cam member has the first cam surface. When driven in the second mode, each cam surface is moved in the middle so that the lens is extended after the lens cover is opened, and when driven in the second mode, the lens cover is closed after the lens is retracted. - Any type of cam may be used as long as it is formed on the cam member. EAs mentioned above, when the cam member is rotated forward or reverse, for example, four cam surfaces are not necessary, and two cam surfaces are sufficient. Needless to say, it's a good thing. (Effects of the Invention) In the present invention, the cover control cam means and the lens control cam means which are integrally formed are driven by a drive source driven in the first and second modes, and the drive source driven in the first mode and the lens control cam means are driven in the first mode. Sometimes, after the cover control cam means drives the cover drive means to move the protective cover from the closed position to the open position, the lens control cam means cooperates with the lens drive means;
As a result, the taking lens moves to a position away from the imaging surface, and in the second mode, the lens control cam "2-stage drives the lens drive means to move the taking lens to a position close to the imaging surface, and then covers the lens. Since the control cam means cooperates with the cover drive means to move the protective cover from the open position to the closed position, the operability of the retractable camera with the protective cover sealed is improved, and the protective cover is The opening/closing of the lens and the movement of the photographic lens toward and away from the imaging surface, that is, the protrusion and retraction of the photographic lens, can be synchronized extremely easily and reliably.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing each part of the camera according to the present invention;
Figure 2 is a front view of the cam member shown in Figure 1, and Figure 3 (a)
) and (b) also show side views of the cam member,
(a) shows the lens storage position, (b) shows the lens protruding position n, FIG. 4 is a block diagram showing the motor control system of the camera according to the present invention, and FIG. 5 shows the lens position selection switch t. FIG. 6 is a top view of the lens position detection switch. (Explanation of symbols of main parts) 2: Lens barrel 3a, 3b: Mouth-2 door 4a, 4
b: Lens force bar (protective cover) 5: Drive ring 7a, 7b: Rod 8: Lens barrel block 8a: Pin 9 nispool lO: Motor 11: Cam member 24: Gear 25: Surface cam 25a, 25c: Inclined surface 25b :'IP flat surface 26: Groove cams 26a to 26c: Groove portion 28 Nilever 31 Nilever 31a: Bin 40: Lens position selection lever 101: Motor control section 103: Motor reverse rotation signal generation section 104: Motor forward rotation signal generation section 105: Motor Stop signal generation section 10f3: Film end detection signal generation section 31 to S7
:switch

Claims (1)

[Scope of Claims] 1) Two lens-proximity positions where at least part of the lens system is close to the imaging surface and a lens-separated position where at least part of the lens system is remote from the imaging surface.
a protective cover that is movable between a cover closed position that protrudes onto a movement trajectory of the photography lens and covers the front surface of the photography lens, and a cover open position that retreats from the trajectory and opens the front surface of the photography lens; , a cover driving means for moving the protective cover between the cover closed position and the cover open position, a lens driving means for moving the photographic lens between the lens close position and the lens remote position, and the cover drive and a drive source for the lens drive means, comprising: cover control cam means driven by the drive source to control the cover drive means; and cover control cam means driven by the drive source to control the lens drive means. and a lens control cam means, the drive source being a first lens control cam means.
and a second mode, and in the first mode, the cover driving 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 photographic lens from the lens close position to the remote position, and in the second mode, the lens control cam means drives the lens drive means to move the photographic lens from the lens close position to the remote position. After the photographing lens is moved from the lens remote position to the close position, the cover driving means is driven by the cover control cam means to move the protective cover from the cover open position to the cover closed position, and the cover control cam means and the lens control cam means are integrally constructed. 2) The cam means for controlling the cover is formed with a cam surface for closing the cover and the cam surface for opening the cover, and the cam means for controlling the lens is formed with a cam surface for retracting the lens and a cam surface for extending the lens. In the first mode, the cover control cam means and the lens control cam means are rotated by a predetermined angle, and the opening cam surface cooperates with the cover drive means to open the protective cover. is moved to the cover open position, and then the feeding cam surface cooperates with the lens driving means to move the photographing lens to the lens separation position, and in the second mode, the rotation is the same as in the first mode. The cover control cam means and the lens control cam means are rotated in the direction, and the retracting cam surface cooperates with the lens drive means to move the photographing lens to the lens proximity position, and then the closing 2. The collapsible camera according to claim 1, wherein the protective cover is moved to the cover closed position by cooperating with the cover driving means.