JPH0250143A - Collapsible mount type automatic focusing camera - Google Patents

Abstract

PURPOSE:To prevent the breakage of a photographic lens by providing a means for preventing the closing of a barrier and giving a switching function for starting collapsibility to the means. CONSTITUTION:A lens driving signal generation means combined with closing preventing means 12 is provided in a collapsible mount type automatic focusing camera having the lens barrier 1. Therefore, at the time of photographing, a driving signal for a lens barrel 2 is generated with the action of opening the lens barrier 1 and the lens barrel 2 is protruded to perform a focusing action after opening the lens barrier 1. After completing photographing, the lens barrel 2 is collapsed first with the action of closing the lens barrier 1 and the lens barrier 1 can be closed after the lens barrel 2 is completely collapsible. Thus, the photographing lens can be effectively protected.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a collapsible camera having a lens barrier for protecting a photographic lens, and in particular, the barrier can be closed only when the photographic lens is retracted. This article relates to a retractable automatic focusing camera.

(Prior Art) Conventionally, cameras with a lens barrier mechanism for protecting the taking lens have had a lens barrier placed on the front of the camera body and moved in a direction perpendicular to the optical axis in front of the taking lens. A camera with a lens barrier is known, which is configured to open and close to protect the entire photographic lens including the lens barrel.

In such a camera with a lens barrier, in order to downsize the entire camera, it is necessary to reduce the amount of protrusion of the photographing lens from the camera body. If the amount of protrusion of the photographic lens is large.

The overall thickness of the camera inevitably had to increase.

On the other hand, by configuring the camera to have a zoom function and functions such as standard and telephoto, it is possible to protect the photographic lens, that is, the lens barrel, even when using a relatively large photographic lens that protrudes from the camera body. There is a need to provide a lens barrier for this purpose.

However, when the lens barrier is used in a conventional type of camera, the camera inevitably has to be made larger in order to secure a space for accommodating the lens barrier.

An object of the present invention is to effectively protect the 1ili lens, that is, the lens barrel, and to make it easy to handle, even when using a relatively large photographic lens as described above, without making the entire camera large. An object of the present invention is to provide a camera having a simple lens barrier.

(Means for solving the problem) In the present invention, even when using a type of lens barrier that moves perpendicularly to the optical axis on the front surface of the photographic lens, the size of the entire camera can be reduced. The lens barrel has a collapsible mechanism, and when not taking pictures, the lens barrel is moved in the direction of the optical axis of the lens and retracted into the camera body, and when taking pictures, the lens barrel is projected forward beyond the lens barrier position to focus. It is configured to perform an action. Furthermore, if the lens barrel protrudes beyond the position of the lens barrier during shooting or collapsing, there is a risk that the photographic lens or lens barrel may malfunction or be damaged by closing the lens barrier incorrectly. Therefore, the camera body is provided with closing prevention means and lens drive signal generating means or braking means that enables the lens barrier to be closed only when the lens barrel is collapsed in synchronization with the driving of the photographic lens.

(1) In the first case, a case will be described in which a closure prevention and lens drive signal generation means is used. Closing prevention and lens drive signal generating means is provided, and is configured to be movable between a locking position that prevents the barrier member from moving in the closing direction and a release position that releases the prevention of the barrier member from moving in the closing direction. By moving the barrier member from the open position to the 51I position,
In order to move the closing prevention and lens drive signal generating means described in 7F from the above-mentioned release position to the above-mentioned locking position to start moving the lens barrel to the protruding position and enable the focusing operation of the photographing lens. generates a signal. When photographing is finished and the barrier member is moved from the open state to the closed state, the closing prevention/lens drive signal generating means is moved from the locking position to the release position, and the lens barrel is moved to the retracted position. Generates a signal to start. At this time, the method of moving the closing prevention and lens drive signal generation means from the engagement position t to the release position is to directly move the closure prevention and lens drive signal generation means by external operation, or by opening the barrier member described above. Roughly closed as from the position! The closing prevention/lens drive signal generating means is indirectly moved from the locking position to the release position by the movement of the barrier member from the open position to the closing preparation position. The method used is to

Thereby, lens casting and barrel collapsing can be completed before the barrier member is moved to the open position.

(2) In the second case, when the barrier member moves from the open position to the open position, a signal is generated to move the lens barrel to the protruding position and enable the focusing operation of the photographic lens, and the barrier member A signal generating means for generating a signal for moving the lens barrel to a collapsed position n when moving from an open position to a closed position is provided on the camera body side.

Furthermore, a brake means having a one-way clutch function is provided, and when the barrier member moves from the open position to the closed position, the speed of movement of the barrier member F in the closing direction is limited so that the photographing lens reaches the retracted position a. The barrier member is then closed.

(Function) - As in the first case, by providing a retractable automatic focusing camera with a lens barrier with means for preventing closing and generating a lens drive signal, the operation of opening the lens barrier during shooting can It is possible to generate a drive signal for the lens barrel, and after the lens barrier is opened, the lens barrel can be protruded to perform a focusing operation.At the end of shooting, the lens barrel can be closed by closing the lens barrier. You can now collapse the lens barrel first and then close the lens barrier after the lens barrel has fully collapsed.

In addition, as in the second case above, by providing a signal generating means and a brake means to a retractable automatic focusing camera with a lens barrier, the lens barrel can be released by opening the lens barrier during shooting. After the lens barrier is opened, the lens barrel can be protruded to perform a focusing operation, and at the end of photography, the closing operation of the lens barrier can be delayed by a brake means. With this, the lens barrel was first collapsed, and the lens barrier was closed only after the lens barrel was fully collapsed.

(Embodiment) FIGS. 1 and 2 are perspective views of a collapsible automatic focusing camera showing a first embodiment of the present invention. Figure 1 shows how the lens barrier l on the front of the lens 2 is slid sideways for photographing, and Figure 211 shows the lens barrier 1 in front of the lens 2 being slid sideways for photographing.
This shows the state in which the photographic lens 2 is retracted into the camera body 3 and the lens barrier is closed.The photographic lens is a bifocal type, and protrudes to the front beyond the sliding position of the lens barrier, as shown in Figure 1. It is configured as follows.

FIG. 3 is a partially enlarged perspective view of portion A in FIG. 1. A flange 20 protruding from the inner wall of the barrier body l is joined to the barrier body at a hatched surface 21, and on this flange 30 is a closing prevention and lens drive signal generating means provided on the camera body side. A block boss 22 that can engage the closing prevention block 30 and a swing lever boss 2 that can come into contact with a swing lever 31 provided on the camera body side.
3 are arranged.

A closing prevention block 30, which serves as closing prevention and lens drive signal generation means, is attached to the camera body 3 so as to slide in a direction parallel to the optical axis of the lens.
includes a block concave portion 30a that engages with the block boss 22 of the flange 20, a block slope 30b, and a block convex portion 30 that engages with a locking lever 32 provided on the body side.
It has c.

A swing lever 31 and a locking lever 32 attached to the camera body are both coaxially rotatably supported around a lever boss 34 (see FIG. 4(a)) on the camera body. The swinging lever 31 is composed of a wall portion 31a that limits rotation of the locking lever 32, a hook portion 31b for stopping the spring 35, and a swinging lever slope 31c.

The locking lever 32 is connected to the block convex portion 3 of the locking block 30.
a locking pawl 3-2a that engages with the spring 3-2a, and a bent portion 32 that stops the other end of the spring 35 and limits the rotation axis of the swing lever 31.
It consists of b.

The spring 35 is a torsion spring, and like the lever bar 31 and the locking lever 32, the spring 35 is arranged around the lever boss 34 on the camera body side, and one end of the spring 35 contacts the hook portion 31b to move the swinging lever 31 counterclockwise. The other end contacts the bent portion 32b to urge the engaging lever 32 clockwise.

FIG. 4(a) is a top cutaway plan view further enlarging the flange portion of FIG. 3. FIG. FIG. 4(a) shows the barrier closure prevention mechanism in a shooting standby state with the barrier open. The wing 36 has one end fixed to the locking lever 32 and the other end coupled to the camera body 3. As a result, the locking lever 32 is always biased clockwise. In order to limit the rotation of the locking lever 32, a locking boss 38 is provided on the camera body side, and the six springs 37 that are in contact with the locking claw 32a of the locking lever keep the closing prevention block 30 from being exposed to light at all times. In order to bias the object in the direction parallel to the axis (arrow 42),
One end is connected to the closure prevention block and the other end is connected to the camera body.

Note that the closure prevention block 30 may be omitted in the drawings.
On the back of the camera is a brush for the main switch of the camera. FIG. 4(b) shows this swifter, and the brush 48 attached to the block 30 moves over the substrate 45 in the vertical direction of the drawing (that is, at the arrow 41.4 in FIG. 4(a)).
2). When moving from pattern 47 to pattern 46 on the substrate 45, the main switch is turned off, and this trigger signal activates the lens barrel drive system and the lens barrel starts collapsing. Conversely, when moving from pattern 46 to pattern 47, the main switch is turned on, and the photographing lens begins to protrude from the camera body in response to this trigger signal.

5 to 7 show the operation of the barrier closure prevention IF mechanism of FIG. 4(a), and the first embodiment of the present invention will be explained with reference to these FIGS. Let's explain the operation.

FIG. 4(a) shows the barrier closing prevention mechanism in a state where the barrier is open, the main switch is on, and the photographing lens is protruded. When the flocking boss 22 and the block recess 30a are engaged, and the closing prevention block 30 or fJ1j4f21 is in the closing prevention position, the flocking boss, that is, the lens barrier moves in the direction of the arrow 44. Not possible, however, the block boss 2z and the block 4 part 30a are
It has a click structure in the direction of arrow 3, and when a predetermined force or more is applied to the lens barrier, that is, the block boss 22 in the direction of arrow 43, the block 30 releases the spring that urges the lens barrier 30 in the direction of arrow 42. 37 in the direction of arrow 41. At the same time, the block boss 22, that is, the barrier moves in the direction of the arrow 43.

When the block boss 22 touches the block slope 30b, the brush attached to the block 30 moves on the board 45 to turn the main switch from on to off.

Therefore, the lens barrel starts collapsing in response to a trigger signal to the lens barrel WIA*m. Furthermore, the block boss 22
When the block moves in the direction of arrow 43 while contacting and pressing against the block slope 30b, the locking pawl 32a of the locking lever 32 and the block convex portion 30c engage with each other. When the block 30 is further moved in the direction of the arrow 41, the block protrusion 30c presses the locking claw 32a, causing the slope of the locking claw 32a to become W! move,
As a result, the locking lever 32 rotates counterclockwise. After that, when the block 30 moves to a predetermined position in the direction of the arrow 41,
That is, when the block convex portion 30c moves in the direction of arrow 41 past the locking pawl 32a, the locking lever rotates clockwise and comes into contact with the locking boss 38 again. At this time, the locking claw 32a
is located at a position that locks the block convex portion 30c, and prevents the entire block 30 from moving in the direction of arrow 42.

When the lens barrier is further moved in the direction of the arrow 43 to the closing preparation position, the block boss 22 moves in the direction of the arrow 43 and comes into contact with the mop portion 30d of the flock 30. FIG. 5 shows this state. Block 30 in this state
is in the release position where the prevention of closing of the lens barrier is released.

By this time, the lens barrel has been retracted to a position where it does not interfere with the lens barrier.

FIG. 6 shows a state in which the barrier is moving from the closing preparation position to the open position and then to the closed position. When the swing lever boss 23 is moved in the direction of arrow 44 with a larger force, the swing lever 31 rotates clockwise.

The barrier is therefore easily closed. Note that when the barrier moves to the open position, the swing lever boss 23 and the swing lever slope 30c come out of contact, and the swing lever 31 rotates counterclockwise to return to its original position.

FIG. 7 is a diagram showing a state in which the barrier is being moved from the closed position to the open position. When the swinging lever boss 23 comes into contact with one end of the swinging lever 31, the swinging lever 31 starts to rotate counterclockwise or the wall portion 31a of the swinging lever 31
Since the bent part 32b of the locking lever 32 is pushed, the spring 36
The lock lever 32 also rotates counterclockwise at the same time as the swing lever 31 against the force. Then, the locking pawl 32a and the block convex portion 30c are disengaged, and the flock 30 is moved by the spring 37.
Due to the force, the arm 30e of the block 30 moves in the direction of the arrow 42 until it comes into contact with the block boss 22.

This state is shown in Figure 7. When the barrier is further opened, the lever boss 23 and the swinging lever slope 30c come into contact with each other, and the block boss 22 swings on the arm 30e, moves to the front block boss 22 or the flock recess, and then engage.

At this time, the block 30 moves in the direction of the arrow 42 and slides on the brush 48 or the board 45 on the back side of the block 30, and the main switch is turned on. Therefore, the photographing lens begins to protrude to the focusing operation position.

By configuring as described above, there is no interference with the photographic lens when opening and closing the barrier.

FIG. 8 is a partially enlarged perspective view for explaining the second embodiment of the present invention. The second embodiment is also a bifocal retractable automatic focusing camera.

Its appearance is almost the same as that of the first embodiment shown in Figures 1 and 2, and corresponds to part A of the retractable autofocus camera in Figure 1 with the barrier open. Figure 8 is an enlarged perspective view of the part that is visible.

The closure prevention mechanism of the second embodiment will be explained according to FIG. 8, the barrier flange la provided on the barrier l.
protrudes from the inner wall of the barrier l, and the surface 1d indicates the joint with the barrier inner wall. Boss l on the barrier flange la
Reference numeral b designates a flange projection 1b, which is arranged so that when the barrier slides and the flange la advances to the right, this flange projection 1b comes into contact with the lever end 13b of the lever 8-13.

The closing prevention block 12, which is closing prevention lid lens drive signal generating means, is provided to prevent the helia from opening, and is slidable in the directions of arrows B and C. The guide @12b is provided for sliding in the directions of arrows B and C, and the closing prevention block 12, which serves as closing prevention and lens drive signal generation means, is attached to the barrier flange 1a.
This makes it possible to move until it no longer interferes with the object.

Moreover, the block pushing part 12a protrudes from the camera body in order to move the opening prevention block 12, which is biased in the direction of arrow C, in the direction of arrow B with a finger.

The lever 13 is biased clockwise around the shaft 13c, and in the state shown in Figure 1, the lever pawl 13a of the lever 13 is in contact with the lever surface 12c of the opening block 12 parallel to the guide groove 12b. . When the closing prevention block 12 retreats to a position where it does not prevent the barrier flange la from moving in the closing direction, the lever surface 12c and the lever pawl 13a come out of contact, and the lever rotates clockwise, causing the lever pawl 13a to close. The locking surface 12d of the prevention block I2 engages with the locking surface 12d, thereby forming a structure that prevents the closure prevention solo 12 from moving in the direction of arrow C.

9 is a top plan view of the closure prevention mechanism of FIG. 8. FIG. The lever 13 is biased clockwise by a spring 13 that is engaged with the camera body 3 at one end. Opening prevention block 1
2 is configured to slide along two guide pins 16 that are located within the guide groove 12b and fixed to the camera body.

FIG. 12 is a cross-section of the flock pusher 12a of the anti-closing solo lock 12 shown at arrow BH in FIG. A brush 17 is fixed to the block pushing part 12a of the closing prevention block, and a finger slip preventer is provided on the upper part of the block pushing part 12a. A wiring pattern 19.20 is provided on the printed circuit board 18 fixed to the camera body side, and a brush 1 fixed to the lower part of the block pusher 12a.
7 slides on the wiring patterns 19 and 20, and the block pusher 12a and printed circuit board 18 constitute the main switch of the camera. When the brush 17 moves from pattern 20 to pattern 19, the main switch is turned off, and when brush 17 moves from pattern 19 to pattern 20, the main switch is turned on.

The operation of the retractable automatic focusing camera of the present invention will be explained with reference to FIGS. 9 to 11. As mentioned above, FIG. 9 shows the mechanism of claustrophobia 1h when the barrier is in the open state, and the photographic lens and the barrier (not shown) are in the same state as in FIG. 1. The closing prevention block 12 is urged downward in the drawing by the spring 15 and comes into contact with the surface 1e of the barrier flange, and cannot move the barrier flange to the right in the drawing. Even if I wanted to, I couldn't close the barrier.

To store the lens barrel and close the barrier from this state,
First, the block pushing part 12a of the finger closure prevention flock 12
Push upwards on the IJ surface. As a result, the opening prevention block 12 slides upward in the drawing along the guide pin 16 against the force of the spring 15. During this process, the flange 17 moves from the wiring pattern 20 to 19, the main switch is turned off, and a signal for collapsing the lens barrel is generated. In response to this signal, the lens barrel drive device is operated and collapsing of the lens barrel is started. As the block 12 continues to move upward, the lever 1 is biased clockwise by the spring 14.
The lever claw 13a of No. 3 engages with the locking surface 12d.

The anti-closing flock 12 is restricted from moving upward by one of the guide bins 16 and remains at that point d. This state is shown in the first O12I, and as shown in the figure, the closure prevention block 12 and the barrier flange 1a are disengaged from each other, and the barrier slides or rotates to the right. Moreover, during the transition from FIG. 9 to FIG. 1O, the photographic lens is retracted to a position lower than the barrier, and the barrier can be closed without interfering with the photographic lens.

When the barrier is slid in the closing direction and the barrier flange is moved to the right, the lever end 13b of the lever 13 and the flange protrusion 1b are just before the barrier is in the closed state.
The flock 12 contacts the surface 1f of the barrier flange 1a to prevent the lever claw 13a and the flock 12 from engaging or disengaging from closing.
It moves downward until it comes into contact with , and stops in the state shown in Figure il1. FIG. 11 shows the state of the closing prevention mechanism when the barrier is moved to the closed position. In this case, the photographing lens is retracted (not shown), and the appearance of the camera is as shown in FIG.

When the barrier starts to open to the left from the closed state shown in Figure 11,
The surface 12f of the block 12 and the surface If of the barrier flange 1a become swing surfaces, and the barrier flange 1a moves to the left in the drawing. When the barrier is in the open state and the barrier flange moves to the position shown in FIG. It comes into contact with the flange 1e. As the closing prevention block moves, the brush 17 also moves, so the main switch is switched from off to on.

By switching this main switch, a signal for protruding the lens barrel is generated, which operates the m-barrel drive unit and causes the lens barrel to protrude to the protruding position t for focusing operation. At this time, the opening prevention mechanism returns to the state shown in FIG. 9.

FIG. 13 is a perspective view showing the L-stage and locking means of the submerged eye movement focusing camera brake according to the third embodiment of the present invention. When the barrier l in the closed state is slid to the left to the open position, the main switch provided on the barrier l is turned on, and this trigger signal operates the lens barrel drive device and the lens barrel starts to protrude. do. It protrudes to a position higher than the lens barrel or barrier and stops, entering the standby state. The standby state in which this barrier is opened is as in the first tg, the same as in the first embodiment. The barrier l is always biased in the closing direction by a spring 58 fixed to one end or the camera body, but it can be easily moved manually in the opening direction (toward the left in the drawing).

The locking hand 1) is composed of a barrier locking member 56 and a locking protrusion 1a on the barrier side.
It is a rotating part that locks and holds the barrier 1 in the open position, and is biased clockwise by a spring 57 with a boss 56c provided on the camera body as a rotation axis.

However, this barrier locking member 56 is restricted from rotating clockwise beyond the position shown in the figure by a boss (not shown) provided on the camera body side. A knob 56a provided on the barrier locking member 56 protrudes from the camera body, and by operating this knob 56a, the barrier locking member can be rotated about a boss 56c.

Next, a brake mechanism for adjusting the closing speed of the barrier will be described. 51 is a rack attached to the rear surface of the barrier, and the planetary gear units 2!52, 53.59 are mechanically connected to this rack. *The star gear device is composed of a sun gear 52, a planet gear 53, and an arm 59. The governor mechanism includes a stepped gear 54 consisting of a spur gear and an escape wheel, and an ankle 5.
Consists of 5. Gear 52.53. The stepped gear 54 and the ankle 55 are each rotatably held by the camera body 3.

The barrier l is provided with a main switch (not shown). The structure of the main switch is almost the same as that shown in Figure 4(b). Similar to the explanation of FIG. 4(b) of the pi embodiment,
The main switch is turned on or off by brushing or sliding the board. In other words, turn on the main switch with the barrier open.

When the barrier is moved slightly from the open state to the closed direction,
The main switch is configured to be in the OFF state. When the main switch is switched from off to on, the lens barrel starts moving to the extended position, and when the main switch is switched from on to off, the lens barrel moves to the retracted position.

The operation of the third embodiment will be explained below.

First, the operation of moving the barrier 1 from the closed state as shown by the imaginary line in FIG. 13 in the open direction to the imaging preparation state will be described. The barrier l is moved to the left against the spring 58. As the rack 51 moves to the left, the sun gear 52 rotates counterclockwise, and along with this, the arm 59 also rotates counterclockwise. As a result, the engagement between the planetary gear 53 and the stepped gear 54 is disengaged, and the rotation of the sun gear 52 is not transmitted to the governor mechanism 54.
Barriers can be easily developed. When the barrier is further moved in the opening direction, the locking protrusion 1a of the barrier l or the locking claw 56b of the barrier locking member 56 is pressed upward in the drawing,
When the barrier locking member 56 is rotated counterclockwise once and the barrier is fully opened and reaches the left side of the locking protrusion 1a or the locking claw 56b, the main switch is switched from off to on, and the lens barrel is turned on. starts moving to the protruding position. At this time, the barrier locking member 56 rotates clockwise and returns to the state shown in FIG. 13, and as a result, the barrier locking member 56
locks the locking protrusion 1a, and the barrier l leans in the open state.

Once the lens barrel has moved to the protruding position, the camera is ready to take a picture.

Next, a description will be given of the operations from moving the lens barrel to the collapsing position and closing the lens barrier in order to accommodate the photographic lens after photographing is completed. When the knob 56a of the barrier locking member 56 is rotated counterclockwise, the locking protrusion 1a and
The locking claw 56b is disengaged due to the force of the spring 58.

Helia begins to move in the closing direction. When the barrier l moves slightly from open to closed, the main switch switches from on to off, and the lens barrel begins to collapse. moreover,
Barrier l continues to move in the closing direction, but now the sun gear rotates clockwise and arm 59 also rotates clockwise. As a result, the M star gear 53 meshes with the stepped gear,
The rotation of the sun gear 52 is transmitted to governor mechanisms 54 and 55. In other words, the lens barrier can only move quickly due to the action of the governor. The lens barrel 2 collapses to a position in the height direction (height in the optical axis direction) before the barrier l arrives. The barrier is closed without interfering with the lens barrel.

In the collapsible automatic focusing camera of the present invention as described above, it is possible to provide a lens barrier to protect the photographic lens while keeping the camera compact. In particular, by providing means for preventing the opening of the barrier and providing a switch function to start collapsing the barrel, or providing a brake means for delaying the closing of the barrier, it is possible to easily prevent damage to the photographic lens due to inadvertence. It has become possible.

[Brief explanation of the drawing]

1 to 7 show a first embodiment of the present invention, FIG. 1 is a perspective view of the retractable automatic focusing camera with the barrier closed, and FIG. FIG. 3 is a perspective view of the retractable automatic focusing camera in an open state, and FIG. 3 is a partially enlarged perspective view of the retractable automatic focusing camera of FIG. 1, showing an opening prevention mechanism in the camera. , and Fig. 4 (a
), FIGS. 5, 6, and 7 are partially enlarged plan views of the closure prevention mechanism shown in FIG. FIG. 4(b) is a diagram showing a main switch provided in the closure prevention mechanism of FIG. 3. 8 to 12 show a second embodiment of the present invention, and FIG.
The figure is a partially enlarged perspective view of the collapsible automatic focusing camera shown in FIG. FIG. 12 is a diagram showing a main switch provided in the closing prevention mechanism of FIG. 8. FIG. FIG. 13 is a perspective view showing a brake means or a closing delay mechanism of a retractable automatic focusing camera according to a third embodiment of the present invention. (Explanation of symbols of main parts) l・・・・・・・・・・・・Lens barrier 2・・・・
・・・・・・Lens barrel 3・・・・・・・・・・・・
Camera body 12... Closing prevention and lens wIA motion signal generating means 13... Lever 17... Brush 18... ..... Printed circuit board 20 ..... Flange 30 ..... Closing prevention and lens drive signal generation means 31 ..... Rocking lever 32...... Attachment and lever 56... Barrier locking member 56a...
...Knob 51...Rack 52, 53. 54゜55・・・・・・Brake f stage d diagram δ diagram

Claims (1)

[Scope of Claims] 1. A lens barrel that has a photographic lens and is movable with respect to the camera body between a protruding position where the photographing lens can perform a focusing operation and a retracted position where photographing is not performed. and is provided on the camera body and is movable in a direction perpendicular to the optical axis of the photographic lens, and when the lens barrel is in the retracted position, it is in a closed position covering the front of the photographing lens and in a closed position, and the lens barrel is protruding. In a retractable automatic focusing camera, the camera is equipped with a barrier member that is movable from the open position to an open position that is sufficiently far away from the optical axis and does not cover the photographing lens when the camera is in the open position. The barrier member is configured to move to a ready position, and is movable between a locking position that prevents the barrier member from moving in the closing direction and a release position that releases the prevention of movement of the barrier member in the closing direction. When the member moves from the closed position to the open position, it moves from the release position to the locking position, starts moving the lens barrel to the protruding position, and generates a signal that enables the focusing operation of the photographic lens. In addition, when the barrier member moves from the open position to the closing preparation position, it moves from the locking position to the release position and generates a signal to start moving the lens barrel to the collapsing position. A retractable automatic focusing camera characterized by having a lens drive signal generating means. 2. A lens barrel having a photographic lens and movable with respect to the camera body between a protruding position that allows the photographing lens to perform a focusing operation and a retracted position where photographing is not performed; It is provided with a closed position that covers the front of the photographic lens when the lens barrel is in the retracted position, and the above-mentioned position when the lens barrel is in the protruded position. In a retractable automatic focusing camera equipped with an open position that is sufficiently far away from the optical axis and does not cover the photographing lens, and a barrier member that is movable to the open position, the locking position that prevents the barrier member from moving in the closed direction and the barrier member are provided. The barrier member can be moved from the released position to the release position where the prevention of movement in the closed direction is released, and when the barrier member reaches the closed position in response to the movement of the barrier member from the closed position to the open position, the When the barrier member is moved to the locked position and is in the open position, it can be moved from the locked position to the released position by external operation, and by moving from the locked position to the released position, the lens barrel is moved to the retracted position. Closing prevention/lens drive signal generating means for generating a signal for starting the movement of the lens barrel and for starting the movement of the lens barrel to the protruding position by moving the lens barrel from the release position to the locking position. A retractable automatic focusing camera characterized by having the following features: 3. A lens barrel having a photographic lens and movable with respect to the camera body between a protruding position where the photographing lens can perform a focusing operation and a retracted position where photographing is not performed; It is provided with a closed position that covers the front of the photographic lens when the lens barrel is in the retracted position, and the above-mentioned position when the lens barrel is in the protruded position. In a retractable automatic focusing camera equipped with a barrier member that is movable between an open position that is sufficiently far away from the optical axis and does not cover the photographic lens, when the barrier member moves from the closed position to the open position, the lens mirror Generates a signal that moves the barrel to the extended position and enables the focusing operation of the photographic lens, and generates a signal that moves the lens barrel to the retracted position when the barrier member moves from the open position to the closed position. means for limiting the moving speed of the barrier member in the closing direction when the barrier member moves from the open position to the closed position, so that the barrier member closes after the photographing lens reaches the retracted position. A retractable automatic focusing camera, characterized in that it is equipped with a braking means configured to achieve the desired effect.