JP2003057705A - Collapsible camera with zoom lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera constituted so that a lens barrel collapsible operation, an operation of a lens barrier device and a zooming operation can be organically performed by a single motor. SOLUTION: There are two cases; a rotary cylinder 9 is only rotated while fitting a pin 9c with the cam groove 3a of a fixed cylinder 3, and the rotary cylinder 9 is rotated and moved in a direction along an optical axis at the same time. A barrier connecting member 27 is attached to an intermediate cylinder 10, and the cylinder 10 interlocks only with the movement of the rotary cylinder 9 along the optical axis. As for a straight-advance cylinder 16 equipped with a first lens group 14, the pin 16a of the cylinder 16 passes through the linear oblong hole 10c of the intermediate cylinder 9 so as to engage with the cam groove 9e of the rotary cylinder 9. As for a lens frame 11 equipped with a second lens group 12, the pin 11a of the frame 11 passes through the linear oblong hole 10d of the intermediate cylinder 10 so as to engage with the cam groove 9f of the rotary cylinder 9. A barrier operating member 25 for operating barrier plates 19 to 22 is attached to the straight-advance cylinder 16, and the engagement part 25d of the member 25 is brought into contact with the barrier connecting member 27 only when the rotary cylinder 9 is moved along the optical axis so that the member 25 can be rotated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, when the camera is not in use, has a built-in barrier plate that covers the front surface of the taking lens, and when the camera is ready for use, it automatically withdraws from the front surface of the taking lens. The present invention relates to a retractable camera equipped with a zoom lens.

[0002]

2. Description of the Related Art Recently, a lens barrier device has been provided in many cameras and is used not only in cameras using films but also in digital cameras. Further, even if only one barrier plate covers the front surface of the taking lens, it functions normally, but normally, in consideration of the storage space of the barrier plate when the camera is used, it is common to have a plurality of barrier plates. There is. On the other hand, among cameras, there is a camera called a retractable type. This camera uses a lens barrier device because the lens barrel is retracted inside the camera body when not in use, and it is extended out of the camera body when you want to use it. In most of them, the barrier plate is automatically operated in conjunction with the feeding / retracting operation.

Further, recently, many cameras are equipped with a zoom lens. In the case of this type of camera,
Since the lens barrel is inevitably long, it is inconvenient when carrying or storing the camera. Therefore, in many cases, when the camera is not used, part or all of the lens barrel is retracted into the camera body, and when it is desired to use it, it is retracted. It is known that even in the case of a collapsible camera equipped with such a zoom lens, the barrier plate is automatically operated in association with the feeding / retracting operation. The present invention relates to a retractable camera equipped with such a zoom lens barrier device.

[0004]

By the way, in the case of recent retractable cameras, it is usual to extend and retract the lens barrel by using a motor as a drive source. Further, in the case of a camera equipped with a zoom lens, it is usual to use a motor as a drive source to perform zooming operation. Therefore, in the case of a retractable camera equipped with a zoom lens,
The lens barrel is extended and retracted by the first motor, and the lens barrier device is also activated in conjunction with it. When the lens barrel is in the extended position, the second motor performs zooming operation. It is known to do so. This is because if one motor is used to obtain all of the above functions, a structure that prevents the feeding / retracting mechanism and the barrier device from operating during zooming operation. Because it becomes extremely complicated.

The present invention has been made in order to solve the above problems, and its purpose is to extend and retract the lens barrel, operate the lens barrier device, and perform the zooming operation. Can be performed by one motor without using a switching mechanism,
An object is to provide a retractable camera equipped with a zoom lens.

[0006]

To achieve the above object, a retractable camera provided with a zoom lens according to the present invention comprises a fixed barrel fixed to a camera body and having a cam groove on its peripheral surface, It is arranged inside the fixed cylinder and has a first
It has a cam groove, a second cam groove, and a pin fitted in the cam groove of the fixed barrel, and when rotated by a motor, it is guided to the cam groove of the fixed barrel and also carries out a feeding / retracting operation along the optical axis. It has a rotary cylinder that performs a first operation and a second operation that only rotates in the extended position, and a first elongated hole and a second elongated hole that are arranged inside the rotary cylinder and are substantially parallel to the optical axis. An intermediate cylinder that operates along the optical axis together with the rotary cylinder during the first operation, a lens of the first group that is disposed inside the intermediate cylinder, and has the first elongated hole on the peripheral surface. When the rotary barrel is moved along the optical axis by a pin having a pin penetrating therethrough and fitted into the first cam groove, the movement region for the rotary barrel is in the first operation and in the second operation. Different from the case, a straight-moving barrel and a lens of the second group are provided inside the intermediate barrel. A lens frame which has a pin penetrating the second elongated hole and fitted into the second cam groove on the attachment peripheral surface and is moved along the optical axis by the rotating barrel; A barrier actuating member mounted so as to be rotatable about an optical axis, and a barrier plate that responds to the reciprocating rotation of the barrier actuating member and operates between a position covering the lens surface of the first group and a retracted position. And a barrier which is attached to the intermediate cylinder and contacts the barrier operating member so as to be rotatable only during the first operation so that the barrier plate can maintain the retracted position in the extended position of the rotary cylinder. And a connecting member.

In this case, it is advantageous in terms of cost if the barrier connecting member has a flexible hook portion and is attached to the intermediate cylinder by engaging the hook portion. Become. Further, if the straight-moving barrel has a guide portion for the barrier connecting member so that the barrier operating member and the barrier connecting member are properly contacted with each other, not only in terms of function, but also in the lens barrel. Space effect also becomes suitable.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the illustrated examples. The embodiment is an application of the present invention to a retractable digital camera equipped with a zoom lens. FIG. 1 is a sectional view showing a non-use state (retracted state) of the camera, and FIG. FIG. 2 is a plan view showing the barrier device (barrier plate operating mechanism) in the state of FIG. 1 when viewed from the side. Further, FIG. 3 is a development view seen from the inside of the fixed barrel in the state of FIG. 1, and FIG. 4 is a development view of the rotary barrel and the intermediate barrel seen from the inside of the intermediate barrel. And FIG. 5 (a)
(C) is a figure for demonstrating the transmission structure of a barrier actuation member and a barrier connection member. FIG. 6 is a sectional view showing a state in which the taking lens is extended to the standard photographing position.
FIG. 7 is a plan view of that state as seen in FIG. Further, FIG. 8 is a cross-sectional view showing a state where the taking lens is moved to the wide-angle photographing position, and FIG. 9 is a cross-sectional view showing a state where the taking lens is moved to the telephoto photographing position.

First, the structure of the present embodiment will be described mainly with reference to FIGS. As shown in FIG. 1, the image pickup apparatus 1 including an image pickup device such as a CCD is attached to a camera body (not shown) by appropriate means. Further, the cover frame 2 arranged on the subject side of the image pickup apparatus 1 is also attached to the camera body, and the fixed barrel 3 is integrally attached to the cover frame 2. A low-pass filter 4 arranged on the front surface of the image pickup apparatus 1 is attached to the cover frame 2. Although FIG. 3 is a part of a development view as seen from the inside of the fixed barrel 3, three cam grooves 3a of the same shape are formed on the inner peripheral surface of the fixed barrel 3 at angular positions at equal intervals. Further, although two key grooves 3b are formed in the fixed barrel 3 in parallel to the optical axis, only one is shown in FIGS. 1 and 3.

A motor 5 is attached to the cover frame 2 by appropriate means, and a male screw formed on its output shaft is screwed into a female screw of the lens frame 6. Further, the lens frame 6 has a third group of lenses 7 attached,
As shown in FIG. 6, the hole formed in the lens frame 6 is fitted to the shaft 2 a provided upright on the cover frame 2.
Therefore, the lens frame 6 is moved along the optical axis when the motor 5 rotates in the normal or reverse direction, and the lens 7 focuses the lens. Further, as shown in FIG. 6, a shaft 2b is erected on the cover frame 2, and the tip of the shaft 2b is fitted into the hole of the fixed cylinder 3. A gear 8 that is rotated by another motor (not shown) is rotatably attached to the shaft 2b.

As shown in FIG. 1, the rotary cylinder 9 arranged inside the fixed cylinder 3 has two partial gears 9a and 9b at the end on the image pickup device 1 side. One of the partial gears 9a is connected to the finder optical system via a transmission mechanism (not shown), and the other partial gear 9b.
Meshes with the gear 8. Further, on the outer peripheral surface of the rotary cylinder 9, three pins 9c are provided at angular positions at equal intervals, and are fitted in the cam grooves 3a provided on the fixed cylinder 3, respectively. Therefore, when the rotary cylinder 9 rotates about the optical axis, it can be moved in the direction along the optical axis by the cam groove 3a. Further, two kinds of cam grooves are formed on the inner peripheral surface of the rotary cylinder 9 at three angular positions at equal intervals.
It will be described later with reference to FIG.

An intermediate cylinder 10 is arranged inside the rotary cylinder 9. The intermediate cylinder 10 is configured to move linearly along the optical axis when the rotary cylinder 9 is rotated. That is, FIG. 4 shows the rotary cylinder 9 and the intermediate cylinder 10.
FIG. 4 is a development view of the intermediate cylinder 10 as viewed from the inside thereof. Three flexible hook portions 10 a are formed at angular positions at equal intervals on the subject side of the intermediate cylinder 10, and the rotary cylinder 9 It is fitted in a groove 9d formed in a circular shape on the inner surface of. Further, two keys 10b are formed on the imaging device side of the intermediate cylinder 10 and are fitted into the key groove 3b formed in the fixed cylinder 3 (see FIGS. 1 and 3). Therefore, the intermediate cylinder 10
When the rotating barrel 9 moves along the optical axis while being rotated by the gear 8, it is guided by the key groove 3b of the fixed barrel 3,
It can be moved linearly along the optical axis.

As can be seen from FIG. 4, on the inner peripheral surface of the rotary cylinder 9, as described above, two kinds of cam grooves having different shapes are formed at three angular positions at equal intervals. That is, three cam grooves 9e having the same shape are formed on the subject side, and three cam grooves 9f having different shapes are formed on the imaging device side. Further, in the intermediate cylinder 10, two kinds of long holes 10c and 10d having different lengths are formed at three angular positions at equal intervals.
Two of them are shown. Further, the intermediate cylinder 10 is formed with an opening 10e. The end face of the long side of the opening 10e is formed perpendicularly to the optical axis, but the end face of the short side is a slope extending in the outer peripheral direction as shown in FIG. Has been formed.

In FIG. 1, a lens frame 11 is provided with a second group of lenses 12 and a shutter 13. Then, on the outer periphery of the lens frame 11, three pins 11a (only one is shown in FIG. 1) are provided at angular positions at equal intervals, and these pins 11a, as shown in FIG. 10d is inserted into the long hole 10d and the tip is fitted into the cam groove 9f of the rotary cylinder 9. The lens frame 15 to which the lens 14 of the first group is attached is attached to the rectilinear barrel 16.
Then, three pins 16a (only one is shown in FIG. 6) are provided on the outer circumference of the straight-moving barrel 16 at angular positions at equal intervals, and these pins 16a of the intermediate barrel 10 are provided as shown in FIG. It is inserted into the long hole 10c and the tip thereof is fitted into the cam groove 9e of the rotary cylinder 9.

The barrier chamber of this embodiment is constructed between a base plate 17 and a cover plate 18 which are attached to each other by means not shown. A base plate 17 arranged on the subject side is fixed to a part of the rectilinear barrel 16 on the subject side, and four barrier plates 19 and 2 are provided in the barrier chamber.
0, 21, 22 are arranged. FIG. 2 is a plan view of the base plate 17 and the cover plate 18 as viewed from the subject side with the illustration omitted, but the barrier plates 19 and 20 are rotatably attached to the shaft 17a of the base plate 17, 21,2
Reference numeral 2 is rotatably attached to a shaft 17b of the main plate 17. Further, the barrier plates 20 and 22 have pins 20a and 22a, and these pins 20a and 22a are pins provided coaxially on the front and back sides, respectively, and the tip end portion on the imaging device side has a cover. An opening (not shown) provided on the plate 18 projects outside the room.

Further, springs 23 and 24 are wound around the shafts 17a and 17b, and one spring 23 has one end hooked on the barrier plate 20 and the other end springed on the cover plate 18. 18a. The other spring 24 is
One end thereof is hooked on the barrier plate 22 and the other end is hooked on the spring hooking portion 18b of the cover plate 18. Therefore, in FIG. 2, the barrier plates 20 and 22 are biased by the springs 23 and 24 so as to rotate in the counterclockwise direction.
Although the barrier plates 19 and 21 are going to be rotated counterclockwise by a and 22a, the tips of the barrier plates 19 and 21 abut on a stopper (not shown) provided on the main plate 17, and this state is maintained. ing.

The barrier actuating member 25 is disposed on the image pickup device side of the cover plate 18, and is rotatably attached to the rectilinear barrel 16 within a predetermined angle range. As can be seen from FIG. 2, the barrier actuating member 25 has a ring shape, and is rotated in the counterclockwise direction by the urging force of the spring 26 hung between the barrier actuating member 25 and the rectilinear barrel 16 so as to be provided on the rectilinear barrel 16. It is designed to be stopped by a stopper not shown. However, FIG. 2 shows a state in which the spring 26 is rotated clockwise against the urging force of the spring 26. As a result, since the pushing portions 25a and 25b of the barrier actuating member 25 are separated from the pins 20a and 22a, the barrier plates 19 and 20 and the barrier plates 21 and 22 are rotated counterclockwise by the springs 23 and 24. And covers the front surface of the lens 14 of the first group. The biasing force of the spring 26 is larger than the biasing forces of the springs 23 and 24.

The barrier actuating member 25 is provided with three mounting holes 25c of the same shape and one engaging portion 25d. The mounting hole 25c is used for connecting the barrier actuating member 25 to the straight advancing cylinder 16.
And is formed in an L-shape with a substantially square hole and an elongated arc-shaped hole continuing from the hole. When attaching to the straight-moving barrel 16, the head of a hook portion (not shown) provided on the straight-moving barrel 16 is inserted into the substantially square hole portion, and the barrier actuating member 25 is rotated counterclockwise. . Then, the head portion of the hook portion engages with the thin portion formed along the arcuate hole portion, so that the barrier actuating member 25 is rotated as long as it is rotated within the arcuate hole portion. It does not come off from the straight cylinder 16. On the other hand, as shown in FIG. 5 (a view seen from above in FIG. 2), the engaging portion 25d is formed with a slope for performing a cam action at the tip protruding toward the imaging device.

FIG. 5 shows a planar shape of the barrier connecting member 27. The barrier connecting member 27 has two flexible hook portions 27a, which are engaged with the opening 10e of the intermediate cylinder 10 as shown in FIG. Further, as shown in FIG. 1, this barrier connecting member 27
Is arranged in a guide hole formed in the straight-moving barrel 16 and is regulated so that it can be stably moved together with the intermediate barrel 10 in a direction along the optical axis. The barrier connecting member 27 also has a beveled surface for camming at the tip thereof, and the engaging portion 25 of the barrier operating member 25 described above is formed.
It can come into contact with and separate from the slope formed in d.

Next, the operation of this embodiment will be described. 1 and 2 show the retracted state of the taking lens, which is not explicitly shown, but the front surface of the camera body is at the position indicated by the alternate long and short dash line at the left end of FIG. The pin 9c of the rotary cylinder 9 fitted in the cam groove 3a of the fixed cylinder 3 is at the position shown in FIG. Further, the pin 16a of the rectilinear barrel 16 fitted into the cam groove 9e of the rotary barrel 9 and the pin 11a of the lens frame 11 fitted into the cam groove 9f of the rotary barrel 9 are at the positions shown in FIG. Further, at this time, the straight-moving barrel 16 into the camera body
5A is larger than the amount of retraction of the rotary cylinder 9 and the intermediate cylinder 10, the engagement portion 25d of the barrier actuating member 25 and the barrier connecting member 27 are in the contact state shown in FIG. 5A. That is, at this time, the barrier actuating member 25 is rotated clockwise by a predetermined angle against the spring 26, as a result, as shown in FIG.
The springs 20, 21 and 22 are rotated counterclockwise by the springs 23 and 24 and cover the front surface of the lens 14.

When the power is turned on when the camera is used, the taking lens is extended, but in the case of this embodiment, the tele (maximum telephoto) photographing position and the wide (maximum wide angle) photographing position are set. The standard photographing position is defined between the two, and the photographing lens is first extended to the standard photographing position. The operation is performed by rotating a rotary cylinder 9 via a gear 8 shown in FIG. 6 by a motor (not shown). That is, when the motor is rotated in the forward direction and the rotary cylinder 9 is rotated clockwise when viewed from the subject side, the pin 9c is guided to the slope of the cam groove 3a of the fixed cylinder 3 as can be seen from FIG. Then, it is moved to the subject side. Therefore, during this movement, the intermediate cylinder 10 is also moved to the subject side. Then, the rotary cylinder 9 is rotated even after the movement to the subject side is completed, and is stopped when the pin 9c passes the C position and reaches the B position.

In this way, the rotary cylinder 9 operates other members until the pin 9c reaches the position B in FIG. That is, when the rotary cylinder 9 starts to rotate in the clockwise direction when viewed from the subject side, the pin 16a of the straight-moving cylinder 16 is guided to the cam groove 9e of the rotary cylinder 9 as shown in FIG. Until just before reaching, it is moved to the subject side with respect to the rotary cylinder 9. On the other hand, the pin 11a of the lens frame 11 is guided to the cam groove 9f of the rotary barrel 9, and is moved toward the image pickup device side with respect to the rotary barrel 9 until just before reaching the C position. Therefore, the distance between the lens 14 of the first group and the lens 12 of the second group increases and the pin 16
When a and 11a reach just before the respective C positions, the interval becomes maximum. Then, after that, the lenses 14 and 1
As the distance between the two becomes smaller, the rotation of the rotary cylinder 9 becomes pin 9
When stopped at the position B of c, the rectilinear barrel 16 and the lens frame 11
Also stops at the B position of those pins 16a, 11a.
FIG. 6 shows a state in which the standard photographing position is set in this way.

By the way, during the operation thus performed, the barrier plates 19, 20, 2 covering the lens 14 are operated.
1, 22 are moved away from the front surface of the lens 14. That is, as described above, after the operation is started, the rectilinear barrel 16 moves toward the subject side with respect to the rotary barrel 9. Therefore, the barrier actuating member 25 attached to the rectilinear barrel 16,
The relative position with respect to the intermediate cylinder 10 moving together with the rotating cylinder 9 also changes, and the barrier actuating member 2 shown in FIG.
5 and the barrier connecting member 27 are relatively separated left and right. However, at this time, the barrier operating member 25
Is urged by the spring 26, it moves not only along the optical axis but also in the counterclockwise direction in FIG. 2 while keeping the slope of the pushed portion 25d in contact with the slope of the barrier connecting member 27. It will rotate.

Therefore, the barrier actuating member 25 is provided with the pushing portion 2
5a and 25b push the pins 20a and 22a of the barrier plates 20 and 22 against the biasing forces of the springs 23 and 24, and the pins 20a and 22a push the barrier plates 19 and 21 to open the front surface of the lens 14. I will do it. Then, the withdrawal operation of the barrier plates 19, 20, 21, 22 performed in this way is performed until the pin 16a of the straight-moving barrel 16 reaches the position A in FIG. 4, and as shown in FIG. Figure 7
Indicates the operation end state. After that, the straight cylinder 16
As described above, the pin 16a of No. reaches the B position through the C position, but since it does not come closer to the imaging device side than the A position in the cam groove 9e, the barrier actuating member 25 is
The state of FIG. 7 is maintained. Then, in the case of photographing in this state, first, the focus is adjusted by the motor 5, and then the opening / closing operation of the shutter 13 is performed.

After that, when it is desired to control the photographing lens from the standard photographing position to the wide photographing position side, the motor (not shown) is reversely rotated to rotate the rotary cylinder 9 counterclockwise as viewed from the subject side. Then, although it is to be stopped at a predetermined position, FIG. 8 shows a state where it is stopped at the widest wide-angle position (C position of the pin 9c in FIG. 3). At this time, the pin 16a of the rectilinear barrel 16 is also attached to the lens frame 1
Since the first pin 11a is also at each C position in FIG. 4, the distance between the lens 14 of the first group and the lens 12 of the second group is the maximum. Further, as already described, the pin 16a does not come closer to the image pickup device side than the A position between the B position and the C position, so that the barrier plate 19, The retreat state of 20, 21, 22 is certainly maintained.

When it is desired to control the photographing lens from the standard photographing position to the telephoto photographing position side, a motor (not shown) is rotated in the forward direction, and the rotary cylinder 9 is rotated clockwise as viewed from the subject side. Then, although it is to be stopped at a predetermined position, FIG. 9 shows a state in which it is stopped at the tele position (the D position of the pin 9c in FIG. 3) which is the most telephoto position. At this time, since the pin 16a of the straight-moving barrel 16 and the pin 11a of the lens frame 11 are in the respective D positions in FIG. 4, the distance between the lens 14 of the first group and the lens 12 of the second group is as shown in FIG. Is the same as. In addition, the straight advancing cylinder 1
The pin 16a of No. 6 has A between the B position and the D position.
Since it does not come closer to the image pickup device side than the position, even if it stops at any position in between, the barrier plates 19, 20, 21, 2
The exit status of 2 is definitely maintained. And FIG.
(C) shows the relative relationship position between the barrier actuating member 25 and the barrier connecting member 27 in this state.

After that, when there is no intention to take a picture and the power of the camera is turned off, the motor (not shown) can be rotated in the reverse direction for a predetermined time, so that the rotary cylinder 9 is viewed from the object side. Can be rotated clockwise. Then, after the pin 9c has passed the C position, the rotary cylinder 9 is rotated and moved to the imaging device side. At the same time, the linear grooves 16 and the lens frame 11 are also moved along the optical axis by the cam grooves 9e and 9f of the rotary cylinder 9. However, in the case of the linear cylinder 16, immediately after the pin 16a has passed the C position. , And moves toward the imaging device side with respect to the rotary cylinder 9.
Therefore, as a matter of course, the speed at which the straight-moving barrel 16 is retracted into the camera body (fixed barrel 3) is faster than that of the rotating barrel 9.

As a result, the gap between the barrier actuating member 25 moving together with the straight-moving barrel 16 and the barrier connecting member 27 attached to the intermediate barrel 10 moving with the rotating barrel 9 becomes small. Y, the pin 16a of the straight-moving barrel 16 is A
Immediately after passing the position, the engaging portion 2 of the barrier actuating member 25 is
The slope formed on 5d contacts the slope formed on the barrier connecting member 27. Then, thereafter, due to the cam action due to the contact between the slopes, the barrier actuating member 25 resists the urging force of the spring 26 and is rotated clockwise in FIG. Therefore, the barrier plates 20 and 22 rotate in the counterclockwise direction by causing the pins 20a and 22a to follow the pushing portions 25a and 25b of the barrier actuating member 25 by the urging force of the springs 23 and 24, and from the middle thereof. , The barrier plates 19 and 21 are rotated counterclockwise by the pins 20a and 22a. Then, immediately after the barrier plates 19, 20, 21, 22 cover the front surface of the lens 14 and the barrier plates 19, 21 come into contact with a stopper (not shown) and stop, the motor is stopped by a sensor (not shown). It returns to the state shown in FIGS.

In this embodiment, in order to reduce the cost of the intermediate cylinder 10, the barrier connecting member 27 is provided by the flexible hook portion 27a provided on the barrier connecting member 27.
Although it is attached to the intermediate cylinder 10, the present invention is not limited to such a configuration and may be attached by other means. Further, although four barrier plates are provided in the embodiment, the present invention may have two or one barrier plates, and those barrier plates are not the base plate 17 but the cover plate 18 Can be attached to the. Furthermore,
Although the above-described embodiments apply the present invention to a digital camera, it goes without saying that the present invention can also be applied to a film-using camera.

[0030]

As described above, according to the present invention, by controlling the rotation direction and the rotation amount of one motor, the operation of extending / retracting the rotary cylinder incorporating the zoom lens for photographing and the lens barrier. Since the operation of the device and the zooming operation can be performed, the function is extremely excellent. Also, of course, there is only one motor,
Since the total number of parts is small, it is extremely advantageous in terms of cost reduction and compactness.

[Brief description of drawings]

[Figure 1] Unused state of the camera (with the taking lens retracted)
FIG. 6 is a cross-sectional view showing an example in FIG.

FIG. 2 is a plan view showing an operating mechanism of the barrier plate in the state of FIG. 1 when viewed from the subject side.

FIG. 3 is a development view seen from the inside of the fixed barrel in the state of FIG. 1.

FIG. 4 is a development view of the rotary cylinder and the intermediate cylinder viewed from the inside of the intermediate cylinder in the state of FIG.

5 (a) to 5 (c) are diagrams for explaining a transmission configuration between a barrier actuating member and a barrier connecting member in the embodiment.

FIG. 6 is a cross-sectional view showing a state in which the photographing lens is extended from the state of FIG. 1 to a standard photographing position.

FIG. 7 is a plan view of the same state as in FIG. 6 seen in the same manner as in FIG.

FIG. 8 is a cross-sectional view showing a state in which the photographing lens is moved from the state of FIG. 6 to a wide photographing position.

9 is a cross-sectional view showing a state in which the photographing lens is moved from the state of FIG. 6 to a telephoto photographing position.

[Explanation of symbols]

1 Imaging device 2 cover frame 2a, 2b, 17a, 17b axis 3 fixed cylinder 3a, 9e, 9f Cam groove 4 low pass filter 5 motor 6 mounting members 6,11,15 lens frame 7,12,14 lens 8 gears 9 rotating cylinder 9a, 9b Partial gear Pins 9c, 11a, 16a, 20a, 22a 9d groove 10 Intermediate tube 10a, 27a Hook part 10b key 10c, 10d oblong hole 10e opening 13 Shutter 16 straight cylinder 17 Main plate 18 cover plate 18a, 18b Spring hooking part 19, 20, 21, 22 Barrier plate 23, 24, 26 springs 25 Barrier operating member 25a, 25b pusher 25c mounting hole 25d engaging part 27 Barrier connecting member

Claims (3)

[Claims] 1. A fixed cylinder fixed to a camera body and having a cam groove on its peripheral surface, a first cam groove, a second cam groove on the peripheral surface arranged inside the fixed cylinder, and a cam of the fixed cylinder. It has a pin fitted in the groove, and when it is rotated by a motor, it is guided to the cam groove of the fixed barrel and extends along the optical axis.
A rotary cylinder that performs a first operation that also performs a retracting operation and a second operation that only rotates at the payout position, and a first elongated hole and a second elongated hole that are disposed inside the rotating cylinder and are substantially parallel to the optical axis. An intermediate barrel that has an intermediate barrel that operates along the optical axis together with the rotary barrel during the first operation, and a lens of the first group that is disposed inside the intermediate barrel and that has the first lens on the peripheral surface. When the rotary cylinder has a pin penetrating through the first elongated hole and fitted into the first cam groove and is moved along the optical axis by the rotary cylinder, the movement region with respect to the rotary cylinder is the case of the first operation, and Different from the case of the second operation, a straight-moving barrel different from the case of the second barrel and a lens of the second group arranged inside the intermediate barrel are attached to the peripheral surface of the second elongated hole to fit in the second cam groove. A lens frame that has a pin that is moved along the optical axis by the rotating cylinder, and the rectilinear cylinder. On the other hand, a barrier actuating member mounted so as to be rotatable about the optical axis, and a barrier which corresponds to the reciprocating rotation of the barrier actuating member and actuates between a position covering the lens surface of the first group and a retracted position. The plate and the intermediate cylinder are attached to the barrier cylinder so as to be rotatable only during the first operation so that the barrier plate can maintain the retracted position in the extended position of the rotary cylinder. A retractable camera provided with a zoom lens, comprising: a barrier connecting member. 2. The barrier connecting member has a flexible hook portion, and is attached to the intermediate cylinder by engaging the hook portion. A collapsible camera with a zoom lens. 3. The straight advancing cylinder has a guide portion for the barrier connecting member so that the barrier operating member and the barrier connecting member are properly contacted with each other. Alternatively, a retractable camera provided with the zoom lens described in 2.