JPS6078435A - Double focus switching camera - Google Patents

Abstract

PURPOSE:To improve the operability of a camera by operating a single operation member once to switch the mode from a lock mode to a telephotographic or standard photographic mode, and also from the telephotographic mode to the standard photographic mode. CONSTITUTION:Switching from the lock mode to the standard photographic mode, switching from the standard photographic mode to the telephotographic mode, and switching from the telephotographic mode to the standard photographic mode are performed by left or light movement of an operation member 5 due to a manual operation. However, with respect to switching from the standard photographic or telephotographic mode to the lock mode, a wall part 7l of a click 7b and a wall part 12l of a lock pawl 12a abut on each other and the detention by the click 7b and the lock pawl 12a is executed, therefore, this switching is impossible.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bifocal switching camera, and in particular, a photographic lens is switched and moved using a single operating member and a motor, and a lens barrier is opened and closed in conjunction with this. Regarding the camera.

Conventionally, bifocal switching cameras with one type of rear converter in lens shutter cameras have been operated manually or with a near-manual switching mechanism, and there are few that have automatic switching using a motor, especially when it comes to camera sequences. I can't find anything that uses an intertwined motor.

In particular, the operating member for changing the focal length of the camera and the operating member for closing the lens barrier and locking the camera so that it cannot take pictures are separately provided on the camera body. When switching the camera, the camera operator has to manually operate separate operating members twice, making camera operation very cumbersome. Furthermore, if such operating members are provided separately, it is difficult to implement them electrically or mechanically.

The present invention has been made in view of the above points and to improve the above drawbacks.The present invention uses a motor to switch the focal length of the photographic lens of a camera, and the switch that performs this switching is switched to a locked state. By sharing the lock switch with the lock switch for the camera, it is possible to simplify the operation of the camera by preventing the increase in the number of operating parts of the camera, and by concentrating these switches, it is easier to implement the camera. When shooting from the shooting side to the lock side
The camera is locked by retracting the lens into the camera body and closing the lens barrier, and when releasing the lock, the reverse operation is performed. The purpose of the present invention is to provide a bifocal switching camera that can be manually operated.

Embodiments of the present invention will be described in detail below with reference to the drawings.

Fig. 1 is an external view of the camera according to the present invention, Fig. 2 is an explanatory view of the camera in a locked state where photography is not possible, and Fig. 6 is an explanatory diagram of the camera when the photographing lens is extended to a telephoto shooting state. . In the figure, 1 is the camera body, 2 is a lens barrel provided on the 11th surface of the camera body, and 14 is a movable lens that holds the photographing lens 6 inside and is slidable in the axial direction. It is a lens barrel. When viewed from the front side of the camera, this photographic lens 6 has a main lens that is in front of both the standard shooting mode and the telephoto shooting mode, but in the case of Fig. 2, the camera is in the locked state. The front surface of the photographing lens 3 is covered and protected by a lens barrier 26. 4 is the viewfinder, which displays whether the camera is in lock mode, standard shooting mode, or telephoto shooting mode, as described below. Reference numeral 5 denotes a mode selection switching operation member that can be moved left and right by manual operation, and includes a lock mode (L) that prohibits the camera's shooting operation, and a standard shooting mode (W) in which the shooting lens 6 performs standard shooting with only the main lens. ), telephoto shooting mode (T
You can select one of the three modes listed in ``1'' by performing a strange operation with your left hand when capturing the camera body 1 as shown in the figure. It becomes. However, this does not apply when switching from another mode to the lock mode.

This mode switching mechanism will be explained in detail with reference to FIGS. 2 and 6. 7 is a mode selection lever that can be slid in the left and right directions (hereinafter, the directions mentioned refer to the directions when viewed from the front of the camera), and a mode selection lever with one end fixed to the camera body 1 side The camera body 1 is biased to the left by the elongated hole 7g, which is loosely fitted into a pin 7f implanted in the camera body 1, and can be moved laterally from side to side. In addition, the protrusion 7h of the mode selection lever 7
, 7i are provided, and these protrusions 7h, 7i are provided with sections for sliding the first switch 2o and the switch 22 (for example, in the case of the first switch 20, first, second sections 201, . . . 202) are provided respectively, and this piece slides over a group of switch patterns, which will be described later, made of copper foil or the like provided on the printed circuit board on the side of the camera body 1, thereby forming the first switch 20 and the switch. 22 is opened and closed.

The aforementioned operating member 5 is provided on the mode selection lever 7-1, and is held on the left side by the force of the pi-6 in the lock mode shown in FIG.

Reference numeral 8 designates a strobe locking lever, one end of which is fixed to the camera body 1 side, and is biased clockwise around a lever 8a that is placed on the locking lever bi-9.
In the lock mode shown in the figure, this rotational force is blocked by engagement between a locking pawl 8c and a tensioning lever 10e, which will be described later. The bent portion 8b at one end of the 8 is always kept in contact with the bent portion 8b. This strobe tension lever 8 is marked (q
In the photographing mode or the telephoto photographing mode, the bending portion 8b is pushed to the right by the tension lever protrusion 7a, so that it can rotate counterclockwise in the direction of the hour hand. The lower part of the light emitter 10 is a long hole 10C that loosely fits into a pin 10b planted on the camera body 1 side.
This leg 10a has one end biased upward by a pop spring 11 fixed to the camera body 1 side, and a notch-shaped tensioning member is provided at the upper part of this leg 10a. 10e is provided, and this tensioner 10e engages the locking pawl 8 at the other end of the strobe tensioning lever 8 in lock mode and mode.
The light emitting device 10 is held in a pop-down position as shown in FIG.

Reference numeral 12 denotes a lock lever which can be rotated around a shaft 12b fixed to the camera body 1 side, and which is similarly fixed at one end.The lock lever is biased counterclockwise by the bias of a spring 13. -, two clicks 7b in the form of a notch are provided at the lower right side of the mode selection lever 7;
It is just below the movement of 7c and this click 7b or 7
For example, a chevron-shaped locking pawl 12.C engages with C to lock the mode selection lever 7 in either the standard shooting mode or the telephoto shooting mode. A is provided. Further, the lower part of the light emitting device 10 is provided with a protruding reset button 10d extending downward, together with the leg 10a, and corresponding to this reset button 10d, the other end of the lock lever 12 is provided with a button 12c extending upward. Click 71].

7c and the lock pawl 12a is released by pushing the bushing portion 12c downward by the reset button 10d and rotating the lock lever 12 clockwise. In addition, the mouth 2 claw 12a
The relationship between the click 7b or 7c is such that by appropriately selecting the angle of inclination when they engage, they can be switched and engaged by operating the operating member 5 in the lateral direction from the outside, and the camera can be moved. can be held in either the focused shooting mode or the telephoto shooting mode.

As mentioned above, the role of the lock lever 12 is to select the mode selection lever 7 between the standard shooting mode and the telephoto shooting mode.
When the light emitter 10 is pushed in (popped down), the lock claw 12a and the click 7b or 7
Release the engagement with c and enter mode 3'i! : The torsion lever 7 is returned to the lock mode position by the force of the mode selection lever spring 6.

The finder 4 includes an objective lens 4a, an eyepiece lens 41),
A mark-type finder consisting of a half mirror 4c, a mirror 4d, and a frame mask 4e.
Symbol marks L (lock mode), W (mulberry photography mode), and T (telephoto photography mode) indicating the respective modes are attached horizontally on the top, and the mode selection lever 7
The photographic mode selected in the finder 4 can be visually checked using a protruding finger F+H7e provided on the front viewfinder 4. These symbol marks are also attached to the camera body 1 side of operation>xB +s5J:. A motor 15 is provided within the camera body 1 to drive the movable lens barrel 14 that slides within the lens barrel 2 in the optical axis direction.
This driving force is transmitted to the feed screw 1 through gears 16, 17, 18.
9 is rotated, and a fin-shaped screw receiver provided on the movable lens barrel 14 side through which the screw 19 is threaded is configured to be transmitted to the portion 14a. The forward rotation or 1-+j:J rotation of the motor 15 allows the movable lens barrel 14 to be extended and retracted.

21 detects whether the position of the movable lens barrel 14 is either the telephoto shooting mode position (extended position) or the standard shooting mode position (retracted position), and the movable lens barrel 14 is selected. This is a second switch for energizing the motor 15 until it reaches the extended or retracted position depending on the photographing mode. This second switch 21. As will be described later, it is composed of a three-pronged section 211 fixed on the movable lens barrel 14 side and a switch pattern group made of copper foil or the like on a printed circuit board provided on the lens barrel 2 side. The second switch 21 is opened and closed by sliding the switch 211 on the switch pattern group. The energization of the motor 15 is carried out by this second switch 21 and the aforementioned first switch 20 which cooperates with the second switch 21 in conjunction with the movement of the operating part 5 to determine the direction of energization of the motor 15, as will be described later. It is done as follows.

The above-mentioned switch f22 turns on the switch that charges the light emitter 10 when shooting is possible, changes the amount of light emitted by the light emitter 10 in each mode of standard shooting and telephoto 1 darkest mode, and controls the exposure control mechanism. F for a given drawing diameter
This is a switch that outputs a signal to correspond to a change in the number value for each mode, and since this switch is not an essential part of the present invention, a description thereof will be omitted.

Reference numeral 26 denotes the aforementioned lens barrier, which is rotatably provided within the movable lens barrel 14 around the bottle 23b implanted on the front surface of the movable lens barrel 14, and has one end fixed to the movable lens barrel 14 side. It is biased clockwise by a barrier spring 24.

A barrier spring 24 is attached to the perpendicularly bent portion of the lens barrier 26 in contact with the inclined surface of a barrier switching cam 7d which projects forward from the mode selection lever 7 and has a distal end projecting forward toward the right side and being inclined. Barrier pin 23 that brings the lens barrier 26 in front of the photographing lens 6 while charging
& has been planted. Since the engagement between the barrier pin 23a and the inclined surface of the barrier switching cam 7d is released in modes other than the lock mode, the lens barrier 26 is retracted from the front surface of the photographing lens B as shown in FIG.

Note that the part of the lens barrier 26 where the barrier pin 23a is located and the part of the barrier switching cam 7d are located in the empty part of the lens barrel 2;
(not shown).

FIG. 4 is an explanatory diagram showing the relationship between the click of the mode selection lever and the lock pawl of the lock lever. In the figure, the lock pawl 12a has a chevron-shaped sloped portion, and on the right side of the sloped portion there is a vertical wall portion 12l. The click 7b has a notch shape similar to the shape of the lock claw 12a, and has a wall portion 71 in contrast to the wall portion 121 of the lock claw 12a. Further, the shape of the click 7c is a chevron shape with a notch ψ similar to the shape of the chevron-shaped portion of the lock claw 12a.

Switching from the lock mode to the standard shooting mode, from the standard shooting mode to the telephoto shooting mode, and from the telephoto shooting mode to the standard shooting mode can be done by manually moving the operating unit 5 to the left or right. Operation section fA for switching from standard shooting mode or telephoto shooting mode to lock mode
Switching by 5 is between the wall 71 of the click 7b and the lock claw 1.
This is not possible because the click 7b and the locking pawl 12a collide with the wall 121 of the click 7b.

Next, the operation of the camera according to the present invention will be explained with reference to FIGS. 1 to 4. When the camera is in lock mode, the camera is in the state shown in FIG. In this state, the mode selection lever 7 is positioned to the left by the force of the mode selection lever spring B.

In this position, the tension lever protrusion 7a is also located on the left side, and the strobe tension lever 8 until the tension lever protrusion 7a abuts
is biased clockwise by the force of the tension lever by 9, and the locking claw 8c of the strobe tension lever 8 is biased against the light emitter 1.
0, and holds the light emitter 10 in the pop-down position as described above. Further, the movable lens barrel 14 is in a position retracted into the lens barrel 2, and the pin 23a and the barrier switching cam 7d are engaged, so that the lens barrier 26 covers the front surface of the photographing lens 6. .

Next, the operation when switching from this lock mode to the standard shooting mode will be explained. The force of the mode selection lever spring 6,
The operating member 5 is moved to the mode selection lever 7 against the clockwise rotational force of the tension lever 8 pushed by the tension lever spring 9.
and manually move it to the right. Along with this movement, the tension lever protrusion 7a pushes the bent portion 8b of the strobe tension lever 8 to the right against the force of the tension lever spring 9. As a result, the locking claw 8C of the strobe locking lever 8 rotates counterclockwise about the shaft 8a, and the engagement between the locking claw 8c and the tension lever 10e is released. At this time, due to the upward bias of the pop spring 11, the light emitter 1G
A and the light emitting part 10C are connected to the camera body 1 as shown in FIG.
2 presses at the top of the screen. Due to this upward movement of the light emitter 10, the lock lever 12 is moved by the lock claw 12 by the 111 force of the lock lever spring 16.
The lock pawl 12a bites into the click 7b and engages with the click 7b. At this time, the operating member 5 is positioned at the standard shooting mode position, so
The manual movement of the operating member 5 is stopped.

On the other hand, when the first switch 20 is switched from the lock mode to the standard photography mode, the motor 15 is not energized as described later, and the movable lens barrel 14 holding the photography lens 3 is in the lock mode. It remains in the same position without moving from the position.

In addition, as the mode selection lever 7 moves to the right as described above, the barrier switching cam 7d also moves to the right, so that the engagement between the cam 7d and the barrier pin 23a is released. As a result, the lens barrier 26 rotates clockwise due to the restoring force of the barrier-bye 24 and is retracted from above the photographing lens 6 as shown in FIG. 3, so that the camera becomes ready for standard photographing.

Next, the state of the camera when switching from standard photography mode to telephoto photography mode will be explained. The operating member 5 is manually moved to the right together with the mode selection lever 7 against the force of the mode selection lever spring 6 and the engagement force between the tension lever spring 9 and the lock pawl 12a and the click 7b. At this time, the clockwise rotation of the lock lever 12 (C) climbs over the inclined surface of the lock 7b, and the next lock claw (-) clockwise rotation of the lock lever 12 due to the bias of the spring 16. (click 7ci twice) to engage. Just when this engagement is performed, the mode selection lever 7 is moved fully to the right (this is when the camera is switched from the standard shooting mode to the telephoto shooting mode. As the motor 7 moves to the right, the first switch 20 is switched as described later, and the motor 15 is energized.
rotates in the forward direction, and this rotational driving force is transmitted to the feeder 19 via the gears 16, 17, and 18, and further, the rotation of this screw 19 [the second screw holder moves the movable lens barrel by moving the portion 14a]. 14 is extended along the camera's mI side ζ2 optical axis C2 together with the photographic lens 6. Just when the photographing lens 6 reaches the telephoto (liquid) mode position, the second switch 21 is switched as described later, and the power to the motor 15 is stopped.
The photographing lens 6 is positioned and a state is reached in which tracking photography is possible.

On the contrary, the operation when the camera is switched from the telephoto shooting mode shown in FIG. 3 to the standard shooting mode will be explained. The operating member 5 is manually switched from the telephoto shooting mode shown in FIG. 6 to the standard shooting mode position to the left. Along with this movement of the operation part 5, the protrusion 7h of the mode selection lever 7 also moves the first and second sections 2 (N, 20) of the first switch 20.
2 to the left, and the first switch 20] is switched as described below. At this time, the motor 15 is energized and rotates in the reverse direction, and this rotational force is transmitted to the gears 16, 17, 18 and the feed screw 19, and the movable lens barrel 14 is moved to the retracted position shown in FIG. 2 along the optical axis. The camera is moved to the rear of the camera until it is ready for standard shooting.

Next, switch the camera from the telephoto shooting mode shown in Figure 6 to the second mode.
The operation when switching to the lock mode shown in the figure will be explained. As shown in FIG. 3, a force is applied to the head of the light emitting device 10 that has been popped up to push it down against the force of the pop spring 11. Then, the light emitter 10 is popped down to the position shown in FIG. At this time, the reset button 10d of the light emitter 10 hits and presses the bushing part 12c of the lock lens (-12) and breaks.

As a result, the lock lever 12 resists the biasing force of the lock lever spring 16 in the counterclockwise rotating direction, and the lock claw 12a of the lock lever 12 is rotated.
At the same time, the lock claw 12a rotates clockwise, and the engagement between the lock claw 12a and the click 7C is released. When this engagement is released, the restoring force of the mode selection lever spring 6 and the tension lever spring 9 (the mode selection lever 7 moves fully to the left together with the operating member 5. At this time, the tension lever protrusion 7
a no longer presses the bending part 8b, and the tension lever by-9
Due to the restoring force, the strobe locking lever 8 locks its locking claw 8c.
and rotate clockwise. As a result, the locking pawl 8C and the tensioner 10e engage with each other, and the light emitter 10 is held in the pop-down state against the force of the pop spring 11.

On the other hand, by moving the protrusion 7h of the mode selection lever 7 to the left to the lock mode position, the first switch 20 is switched as described later. As will be described later, the motor 15 is energized by the relationship between the first switch 20 that has been switched and the second switch 21 that has been switched in the telephoto shooting mode position as shown in FIG. The motor 15 rotates in the reverse direction and moves the movable lens barrel 14 together with the photographic lens 6 to the rear of the camera to the position shown in FIG. When this movable lens barrel 14 is retracted, the barrier pin 23a comes into contact with the inclined surface of the barrier switching cam 7d, and this barrier pin 23
When lens a is guided along this slope, a counterclockwise force is applied to the lens barrier 26, and while charging the barrier spring 24, the lens barrier 26 moves toward the camera lens m.
Rotate counterclockwise to close, covering one side. As described above, the camera is held in a locked state by popping down the light emitter 1o and covering the front surface of the photographic lens 26 with the lens barrier 26.

Also, although I did not explain the operation of switching from lock mode to telephoto shooting mode, it is obvious from the combined operation of ``1. Switching from lock mode to standard shooting mode and switching from standard shooting mode to telephoto shooting mode''. Therefore, the explanation of this operation will be omitted. Also, when switching from standard shooting mode to lock mode,
The operation is almost the same as the operation for switching from the telephoto shooting mode to the lock mode, except for the movement in step 4, and the explanation of the operation will be omitted.

However, the mode selection lever 7 is moved to the left together with the barrier switching cam 7d by the mode selection lever spring 6, and at this time,
The barrier QJ replacement cam 7d pushes the barrier pin 23a to the left. As a result, the lens barrier 26 is closed against the force of the lens barrier spring 24.

Note that when switching from the telephoto shooting mode or the stand-up shooting mode to the lock mode, the switching is not possible even if the operating member 5 is operated. This is because the target +, + photography mode locking claws 12a and the clicks 7b engage with each other, and these wall portions 1
21 and 71 collide with each other and lock, so even if you try to manually move the operating member 5 to the left by applying force any further, the operating member 5 and the mode selection lever 7 will move to the left lock mode position. Because they don't. Therefore, these cutting operations are performed only by pushing the light emitter 10 as described above.

Although the viewfinder 4 has not been explained in the above explanation, the indicator 7e is also positioned according to the positioning of the operating member 5 to each mode position, and the position of the indicator 7e is adjusted according to the state of the selected mode. In order to clearly indicate this, an index 7e points to either the W or T symbol mark on the frame mask.

Therefore, when switching the operating member 5, it is only necessary to check visually through the finder 4 which mode the operating member 5 is in and then switch the operating member 5.

Next, the above is possible! 1! The circuit for feeding and carrying the '114 into the II sharp 1 will be explained using FIG. 2
0" is the aforementioned first switch, which is composed of two integrally movable bifurcated sections 201 and 202 and first to sixth switch patterns 206 to 208, and the first and fourth switch patterns. 203.206 is the lock mode position (
The illustrated position is hereinafter abbreviated as L position. ) to the telephoto shooting mode position (Figure J<T position, hereinafter abbreviated as T position), and the second and fifth switch patterns 204 and 207 are from the L position to the standard shooting mode position. (The position W in the figure is hereinafter abbreviated as W position.) The third and sixth switch patterns 205 and 208 are the second and fifth switch patterns 204 and 207, respectively.
It is located at T position on the extension of . Here, the first section 201 slides on the first switch pattern 203, the second switch pattern 204, and the third switch pattern 205, and the second section 202 slides on the first switch pattern 203, the second switch pattern 204, and the third switch pattern 205. The first switch 20 is opened and closed by sliding on the switch pattern 206, the fifth switch pattern 207, and the sixth switch pattern 208.

21 is the above-mentioned second switch, which has three sections 211 and 7th to 9th switch patterns 212 to 21.
4, the seventh switch pattern 212 extends from the movable lens barrel extended position to just before the movable border retracted position, and the eighth switch pattern 216 extends from the movable lens barrel extended position to the movable lens barrel retracted position. There is a ninth switch pattern 214 from the movable lens barrel retracted position to just before the movable lens barrel extended position. Note that the movable lens barrel extended position of the switch pattern means that the third section 211 comes into contact with the switch pattern at this position at this position where the movable lens barrel is completely extended, and the switch pattern The retraction position of the movable lens barrel can be similarly interpreted. The second switch 21 is opened and closed by the third piece 211 sliding on the seventh to ninth switch patterns 212 to 214''.

Here, the first switch pattern 203 and the fourth switch pattern 206 have an electric power of 11Jjt'%/l!
x, 25, and the second and sixth switch patterns 204. ．． 208 are connected to the seventh and ninth switch patterns 212 and 214, respectively, the third and fifth switch patterns 205 and 207 are commonly connected to one terminal of the motor 15, and the eighth switch pattern 213 is connected to the other terminal of the motor 15. In the lock mode, the first and second sections 201.2 of the soft switch 2o
02 is the L position, that is, the position shown by the solid line in the figure, and the third
The section 211 is located at the retracted position of the movable lens barrel as shown by the solid line in the figure.

Therefore, in this state, the contact between the third piece 211 and the seventh switch pattern 212 is broken, so that the motor 15 is not energized.

Even if the camera is changed from the lock mode to the standard shooting mode by switching the operating member as described above, the first and second sections 201
'+ 202 is simply moved from the L position to the W position, and the switching state of the first switch 2o at this time is the same as in the lock mode. Therefore, the motor 15 is not energized and the movable lens barrel 14 is maintained at the same position (the position indicated by the solid line in the figure).

Next, when switching the operating member as described above to change the camera from lock mode or standard shooting mode to telephoto shooting mode, the first and second sections 2o1°202 change from the L or W position to the T position with a dashed line. Located at the location shown.

Then, Sougen Shizuike 25 → first switch pattern 20
6 → first section 201 → third switch pattern 20
5 → Motor 15 (current is in the direction of arrow A) → 'fJ8 switch pattern 216 → 3rd section 211 → 9th switch pattern 214 → 6th switch pattern 20
8→Second section→Fourth switch pattern 206→A 1-pin circuit of the city power supply i'J225 is formed, and the motor 1
5 is energized and rotates forward, and the movable lens barrel 14 is extended from the position shown by the solid line to the movable mirror position shown by the two-dot chain line. When the movable lens barrel 14 is exactly moved to this position, the position of the third section 211 is crossed with the ninth switch pattern 214 as shown by the two-dot chain line.
The contact with the remoter 15 is cut off, and the open/open circuit becomes an open circuit.
The energization is cut off, the movement of the movable lens barrel 14 is stopped, and the movable lens barrel 14 is positioned.

Next, if you switch the operating members as shown in "-" and change the camera from the quick dragon shadow mode to the standard shooting mode or pop down the flash 5 and switch to the lock mode, the first and second
The intercepts 201 and 202 are from the T position indicated by the dashed line to W
Or it can be switched to the L position.

At this time, power supply battery 25 → first switch pattern 20
6 → first section 201 → second switch pattern 20
4→Seventh switch pattern 212→Third section 21
1 → 8th switch pattern 216 → Motor 15 (current is in the direction of arrow B) → 5th switch pattern 207 →
Second section 201 → Fourth switch pattern 206 →
Power supply/l! A closed circuit 225 is formed, the motor 15 is energized and rotates in the reverse direction, and the movable lens barrel 14 is retracted from the position shown by the two-dot chain line to the movable lens barrel retracted position shown by the solid line. When the movable lens barrel 14 is moved to exactly this position, the contact between the third section 211 and the seventh switch pattern 212 is broken, as shown by the solid line at the position of the third section 211. ”-The closed and open circuits are open circuits.Remote 15
The energization is cut off, the movement of the movable lens barrel 14 is stopped, and the movable lens barrel 14 is positioned.

Switching from the standard photographing mode to the lock mode by popping down the light emitter is the same as the reverse operation, and as described above, the motor 15 is not energized and there is no change.

6 and 7 show other embodiments of the present invention. FIG. 6 is an explanatory diagram showing a state in which the movable lens barrel is collapsed in the lock mode, and FIG. 7 is an explanatory diagram showing the camera shown in FIG. 6. FIG. 2 is an explanatory diagram including a driving circuit. This embodiment differs from the above-described embodiments in that another movable lens barrel is provided at a position where the movable lens barrel collapses into the camera in the lock mode. The parts of the camera having the same reference numerals as in the above embodiment have exactly the same configuration as the above embodiment, and therefore their explanation will be omitted.

7' is a mode selection lever that moves as the operating member 5 is manually moved to the left or right;
1' and 2' sections 201' and 202' of the first switch 20', which will be described later, are provided, and this section 201'
, 202' slide on a switch pattern group fixed to the camera body 1 side to open and close the first switch 20. Furthermore, the mode selection lever protrusion 7'a at the right end of the mode selection lever 7' and the bent portion 8 of the strobe tensioning lever 8
b is spaced apart in lock mode, and in order to make the camera ready for shooting from lock mode, the selection lever protrusion 7 must be slid all the way to the right toward the mode selection lever position. 'a hits the bent portion 8b and pushes it to release the engagement between the tension member 10e and the locking pawl 8c, making it impossible to pop up the light emitting device 10.

Therefore, in order to change the camera from the lock mode to the shooting state (telephoto shooting mode), the light emitting device 10 is popped up by manually moving the operating member 5 to the telephoto shooting mode position, and then the first switch 20, which will be described later, is moved. ', the motor 15 is energized and the movable lens barrel 14 is extended to the telephoto shooting side movable lens barrel extension position (hereinafter abbreviated as LT grain position) as shown in FIG. switch 2
By switching 1', the power to the motor 15 is stopped, and the movable lens barrel is positioned at the LT grain position.Of course, at this time, the lens barrier 26 is placed at the ? The lens is moved away from the jiJ plane, allowing telephoto shooting.

Switching from the telephoto shooting mode to the standard shooting mode is obvious from the embodiments described above, and the explanation will be omitted.

Switching from the telephoto shooting mode or the standard shooting mode to the lock mode can be done by pushing the head of the light emitter 10 with your hand to pop it down, as in the above embodiment.

However, the difference from the above embodiment is that when the mode is reached, the mode selection lever 7' returns to the leftward full position, which is the lock mode position, due to the restoring force in the leftward direction by the bar spring A.

At this time, the first switch 20' is switched, the motor 15 is energized, and the movable lens barrel J14 is moved in the same manner as shown in FIG. 2 (however, the lens barrier 26 is open). position (hereinafter abbreviated as LW position) or the movable lens barrel storage position (hereinafter referred to as LW position) located further behind the camera as shown in Figure 6 from the LT grain position similar to that shown in Figure 6.
It is abbreviated as L position. ) to retreat. The movable lens barrel 14 is LL
When the position is reached, the second switch 21' is activated as described below.
When this happens, the current to the remoter 15 is cut off, and the barrel is retracted at this position. Of course, the barrier pin 23 is attached along the slope of the barrier switching cam 7d as in the above embodiment.
A is guided, and the lens barrier 23 covers and closes the front surface of the photographing lens B. Next, the driving of this pJ moving lens barrel 14 will be explained with reference to FIG.

In the figure, 201' and 202' are two bifurcated 1' and 2' segments that move integrally and electrically independently of each other; the solid line indicates the L position, and the dashed line indicates the The two-dot chain line means that it is located at the W position, and the two-dot chain line means that it is located at the T position.

206' to 209' are the 1' to 7' switch patterns, and the 1' and 5' switch patterns 203'
, 207' are from the L position to the T position, the 6th switch pattern 207' is from the L position to the T position, and the 6th switch pattern 207' is from the L position to the T position.
'The switch pattern 204' is only in the L position, and the switch pattern 204' is in the third position only.
' The switch pattern 205' is located only at the W position, and the switch pattern 205'
' and seventh' switch patterns 206', 209'
are provided only at the T position. The first switch 20' has first and second sections 201' and 202' and first to seventh switch patterns 206' to 209'.
It consists of Note that the 2nd to 4th switch patterns 204' to 206' are arranged in a straight line in parallel with the 1'th switch pattern 206'. In addition, 6' and 7' switch patterns 208' and 209' are arranged in a straight line parallel to the 5' switch pattern 207'. The second section 202' slides on the fifth to seventh switching patterns 207' to 209' for switching.

211' is a four-pronged electrically conductive section; the solid line is at the LL position, the one-dot chain line is at the LW position, and the two-dot chain line is at the L position.
The movable lens barrel 14 is shown to be at the T position, and the same applies to the movable lens barrel 14.

212' to 215' are the 8' to 11' switch patterns, which are arranged in parallel; the 8' switch pattern 212' is from the LT position to just before the LL position; pattern 216' is from the LT position to the LW
There is a pattern 214 for the 10th switch, up to the front of the position.
' is from the LT position to the LL position, and the 11th switch pattern 215' is from the LL position to just before the LT position. The second switch 21' is connected to the third section 211' and the eighth section 211'.
’ to 11th’ switch patterns, and the 3rd
The segment 211' slides on the 8th to 117th switch patterns to perform switching. Note that the 1' to 7' switch patterns and the 8' to 11' switch patterns are made in a 4'f7i pattern by applying copper foil, etc. to each printed circuit board. There is.

The power battery 25 is connected between the 1' and 5' switch patterns 206' and 207', the 2' and 8' switch patterns 204' and 212', and the 3' and 3' 9
', switch patterns 205' and 216', fourth' switch pattern 206', one input terminal of motor 15, and sixth' switch pattern 208', ninth' and first
1' switch patterns 209' and 215', 10th
' switch pattern 214' and other input terminals of the motor 15 are connected, respectively. When the 1st and 2nd segments 201' and 202' are switched from the L position to the T position, 25 → 206' → 15 (current rotates forward in the direction of the arrow)
→214'→211'→215'→209'→207'
→A closed circuit of 25 (the name is omitted here to simplify the explanation. The same applies hereinafter) is formed, and the movable lens barrel 14 and the 3' section 211' at the LL position are extended to the LT position. be done. When these cars reach this position, the contact between the 3' section 211' and the 11' switch pattern is broken, the above-mentioned open circuit becomes an open circuit, the motor 15 is stopped, and the movable lens barrel 14 is moved to the LT position. be located in a position.

When the 1st and 2nd segments 201' and 202' are switched from T position force to W position, 25 → 206' → 201' →
205' → 213' → 211' → 214' → 15 (current rotates in the opposite direction in the direction of arrow B) → 208' → 202' → 207
A closed circuit from ' to 25 is formed, and the movable lens barrel 14 and the third segment 211', which are in the LT position, are moved to the LW position. When the movable lens barrel 14 and the 3'-th section 211' reach the LW position, the 3'-th section 211' and the 9'-th sweet P
The contact of the pattern 213' is cut off, the open circuit becomes an open circuit, the remoter 15 stops, and the positioning of the movable lens barrel 14 at the Lw position is completed. 1st and 2nd sections 201'
, 202' from the W position to the T position is the same as the switching from the L position to the T position and is self-explanatory, so a description thereof will be omitted.

'iU 11 Tll y1''Mt Q' /Tl)
TI I# ') n zu/, ')I"I 9' W
A standing type 9 Actually, switching from T position to L position is 2
5 → 206' → 201' → 204' → 212' → 211
'→214'→15 (-current rotates in the direction of arrow B in the opposite direction) -208'→202'→207'→25 A closed circuit is formed, and the reverse rotation of the motor 15 causes the movable lens barrel 14 and the third The segment 211' is retracted from the LW or LT position to the LL position behind the camera. Movable lens barrel 14
and when the 3rd section 211' reaches the LL position, the 3rd section 211'
' section 211' and 8' switch pattern 212
The motor 15 stops rotating, and the movable lens barrel 14 and the third section 211' are moved to the LL position and collapsed.

Note that the mark type finder of the above embodiment has L, W,
In addition to this, it is also effective to use a mask indicator 7e with a notch as shown in Figure 8 to highlight only the symbol mark of the selected mode. It is.

As described above in detail regarding the present invention, switching from lock mode to telephoto shooting mode or standard shooting mode, and switching from telephoto shooting mode to standard shooting mode is C-11-
This can be easily done with a single operation of the operating member, significantly improving the operability of the camera. Moreover, since each mode is displayed in the viewfinder, you can operate the operating elements while looking at this display.Moreover, since the operation is done with a single operating element, there is no need to apply much force to the camera, so your eyes can't see through the viewfinder. Now you can easily operate it without taking your hands off it. In this pond, too, switch modes]
5 cameras can be used, which is very advantageous in terms of camera implementation. Also, when opening the lens barrier, you can operate the single operating member mentioned above.

This can be done at the same time as the switching, greatly improving the operability of the camera.

[Brief explanation of the drawing]

Fig. 1 is an external view of the camera according to the present invention, Fig. 2 is an explanatory view showing the mechanism of the main part of the camera according to the invention in lock mode, and Fig. 6 is the mechanism of the main part of the camera according to the invention. FIG. 4 is an explanatory diagram of the relationship between the lock claw and the click, FIG. 5 is an explanatory diagram of the motor drive circuit of the camera according to the present invention, and FIG. 6 is an explanatory diagram of the camera motor drive circuit according to the present invention. An explanatory diagram of another embodiment of the camera, FIG. 7 is an explanatory diagram of the drive circuit of FIG. 6,
FIG. 8 is an explanatory diagram of another embodiment of the mark type finder. 1 is the camera body, 2 is the lens barrel, 6 is the photographic lens, 4 is the mark type finder, 5 is the operating member, 7° 7' is the mode selection lever, 7b, 7c are the clicks, 7d is the barrier switching cam, 8 is the stroker σ is a tension lever, 10 is a light emitter, 10a is a reset bolt, 12& is a lock claw 1, 14 is a movable lens barrel, 15 is a motor, 20° 20' is a first switch, 21
．． 21' is a second switch, 26 is a lens barrier, 23
a is a barrier pin, and 24 is a barrier spring. Figure 6 @ Figure 7 Figure 8

Claims (1)

[Claims] In a bifocal switching camera, the main lens constitutes the standard photographing lens, and the telephoto photographing lens is constituted by extending the main lens forward and adding a sub-lens behind it. a motor for advancing or retracting the main lens forward or backward; an operating member that allows manual selection of at least one of lock mode, standard copying mode, and telephoto shooting mode; A second controller for detecting whether the position is in one of the modes and energizing the motor until the photographing lens reaches a position corresponding to the mode selected by the operating member from that position. switch and
A first switch that switches in conjunction with the movement of the operating member and cooperates with the second switch to determine the current direction of the motor, and a switch that switches in conjunction with the movement of the operating member from the lock mode to another mode A lens barrier that opens in conjunction with the front surface of the photographing lens is a characteristic 2.
Focus switching camera.