JP2612151B2 - Camera lens equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera lens device provided with a protective cover for opening the front of a lens system.

[0002]

2. Description of the Related Art A camera provided with a lens system which moves between an extended position and a retracted position and a protective cover for opening and closing the front of the lens system has been proposed in Japanese Patent Application Laid-Open No. 53-57818. .

[0003]

However, in the device proposed in Japanese Patent Application Laid-Open No. 53-57818, the protective cover is provided on the camera body, so that the protective cover includes the entire lens barrel. If the lens barrel is not completely housed in the camera body, the protective cover cannot be closed, which is very inconvenient in terms of miniaturization and design freedom. It was something.

The present invention has been made in view of the above circumstances, and has a high degree of freedom in design, is simple in configuration, can achieve miniaturization, has good operability, and moves between a photographing position and a non-photographing position. It is an object of the present invention to provide a camera lens device having a system and a protective cover for opening and closing the front of the lens system.

[0005]

According to the present invention, there is provided a motor, a lens system which moves to a photographing position and a non-photographing position by a driving force of the motor, and a lens system which moves together with the lens system to open and close the front of the lens system. A protective cover, biasing means for biasing the protective cover in an opening direction, cover closing means for moving together with the lens system to close the protective cover, and when the lens system is at a photographing position, The link with the cover closing means is disconnected and the protective cover is opened by the urging force of the urging means, and can be linked with the cover closing means as the lens system moves from the photographing position to the non-photographing position. A lens device for a camera having an operating means for closing the protective cover against the urging force of the urging means.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below. Before that, a camera as a premise thereof will be described with reference to FIGS.

FIG. 1 is an external view of the camera, FIG. 2 is a perspective view showing a locked state of the camera of FIG. 1 in which photographing is impossible, and FIG. 3 is a view when the photographing lens is extended to a telephoto photographing state of the camera of FIG. It is a perspective view. In these figures, reference numeral 1 denotes a camera main body, 2 denotes a lens barrel provided on the front surface thereof, and 14 denotes a movable lens barrel which holds the taking lens 3 therein and is slidable in the optical axis direction in the lens barrel 2. It is. When the photographing lens 3 is viewed from the front side of the camera, the main lens which is in front of the standard photographing state and the telephoto photographing state is visible, but FIG.
In the case of, since the camera is in the locked state, the photographing lens 3
Are in a state where the front surface is covered and protected by the lens barrier 23. Reference numeral 4 denotes a finder, which displays one of the lock mode, the standard shooting mode, and the telephoto shooting mode, as described later. Reference numeral 5 denotes an operation member serving as a selection member for mode selection switching which can be moved and switched in the left-right direction by manual operation. A lock mode (L) for prohibiting a photographing operation of the camera. A photographing mode (W) and a telephoto photographing mode (T) in which a main lens is extended in front of the camera, and a rear converter lens is added behind the main lens and the photographing lens 3 is used for telephoto photographing can be selected. As shown in the figure, any one of the above three modes can be selected by a light operation of the left hand holding the camera body 1.
However, this does not apply when switching from another mode to the lock mode. This mode switching mechanism is shown in FIG.
This will be described in detail with reference to FIG. Reference numeral 7 denotes a mode selection lever slidable in the left-right direction (hereinafter, when the direction is described, the direction is viewed from the front of the camera). The mode selection lever 7 is driven by a mode selection lever spring 6 having one end fixed to the camera body 1 side. A left and right lateral movement is enabled by an elongated hole 7g which is urged in the direction and is loosely fitted into a pin 7f implanted in the camera body 1. The mode selection lever 7 is provided with protrusions 7h and 7i, and these protrusions 7h and 7i are provided with a first switch 2 as described later.
0, slide section of the switch 22 (for example, in the case of the first switch 20, first and second sections 201 and 202)
Are provided, and this section slides on a later-described switch pattern group made of copper foil or the like provided on a printed circuit board on the camera body 1 side, thereby forming a first section.
Switches 20 and 22 are opened and closed. The operation member 5 is provided on the mode selection lever 7 and is held on the left side by the force of the spring 6 in the lock mode shown in FIG.

Reference numeral 8 denotes a strobe tensioning lever, and a shaft 8 is driven by a tensioning lever spring 9 having one end fixed to the camera body 1 side.
It is urged clockwise around a as the center of rotation,
In the lock mode shown in FIG. 2, this rotational force is prevented by the engagement of a later-described locking claw 8c and a tensioning member 10e, and in other modes, a tensioning lever projection 7a at the right end of the mode selection lever 7 is provided.
The bent portion 8b at one end of the strobe locking lever 8 is always in abutting state. In the standard photographing mode or the telephoto photographing mode, the strobe tensioning lever 8 serves as the tensioning lever projection 7.
The bent portion 8b is pushed rightward by a, and rotates counterclockwise. The lower part of the light emitter 10 has an elongated plate-like leg 10a having an elongated hole 10c which is loosely fitted to a pin 10b implanted in the camera body 1, and one end of the leg 10a is fixed to the camera body 1 side. The spring 10 is urged upward by the pop spring 11, and a notch-shaped tensioning member 1 is provided on the upper part of the leg 10a.
0e is provided. The locking device 10e engages with the locking claw 8c at the other end of the strobe locking lever 8 in the lock mode so that the light emitting device 10 is stored in the camera body 1.
0 is kept pop-down as shown in FIG.

Numeral 12 is urged in the counterclockwise direction by the urging force of a lock lever spring 13 which is rotatable about a shaft 12b fixed to the camera body 1 and also has one end fixed. The lock lever is located just below the movement of the two cut-out clicks 7b and 7c provided on the lower right side of the mode selection lever 7, and is engaged with the click 7b or 7c to photograph the mode selection lever 7 as standard. For example, a mountain-shaped lock claw 12a that locks in any one of the mode position and the telephoto shooting mode is provided. A lower part of the light emitter 10 is provided with a projecting reset button 10d extending downward together with the leg 10a, and the other end of the lock lever 12 corresponding to the reset button 10d has a push part 12c extending upward. The engagement between one of the clicks 7b and 7c and the lock claw 12a is released by pushing the push portion 12c downward by the reset button 10d and rotating the lock lever 12 clockwise. . Note that the relationship between the lock claw 12a and the click 7b or 7c is determined by appropriately selecting the inclination angle when they are engaged, and by operating the operation member 5 from the outside in the lateral direction to switch them. In addition, the camera can be held in either the standard shooting mode or the telephoto shooting mode. As described above, the role of the lock lever 12 is to hold the mode selection lever 7 in the standard shooting mode or the telephoto shooting mode, and to lock the claw 12a and the click 7b when the light emitter 10 is pushed down (pop-down).
Alternatively, the engagement with 7c is released, and the mode selection lever 7 is returned to the lock mode position by the force of the mode selection lever spring 6.

The finder 4 is a mark finder comprising an objective lens 4a, an eyepiece 4b, a half mirror 4c, a mirror 4d, and a frame mask 4e. Mode) and T (telephoto shooting mode) symbol marks are attached side by side in the horizontal direction, and the projection mode indicator 7e provided on the mode selection lever 7 allows the user to visually check the shooting mode selected in the viewfinder 4 and the like. You can do it. These symbol marks are also provided on the camera body 1 on the operation member 5. A motor 15 is provided in the camera body 1 as a drive source of a movable lens barrel 14 that slides in the optical axis direction in the lens barrel 2, and this driving force rotates a feed screw 19 via gears 16, 17, 18. The movable lens barrel 14 through which the screw 19 is threaded
It is configured to be transmitted to a fin-shaped screw receiving portion 14a provided on the side. The movable barrel 14 is extended and retracted by the forward rotation or the reverse rotation of the motor 15.

Reference numeral 21 detects whether the position of the movable lens barrel 14 is either the position in the telephoto photographing mode (extended position) or the position in the standard photographing mode (extended position), and the movable lens tube 14 is selected. This is a second switch for energizing the motor 15 until it reaches the extended or extended position according to the shooting mode. The second switch 21 includes a three-pronged section 21 fixed to the movable barrel 14 as described later.
1 and a switch pattern group formed of a copper foil or the like on a printed circuit board provided on the lens barrel 2 side. The section 211 slides on the switch pattern group to open and close the second switch 21. Is performed. The energization of the motor 15 is described later by the second switch 21 and the first switch 20 which determines the energization direction of the motor 15 in cooperation with the second switch 21 in conjunction with the movement of the operation member 5. It is performed as follows.

The switch 22 turns on a switch for charging the light emitting device 10 when photographing is possible, changes the light emission amount of the light emitting device 10 in each of the standard photographing mode and the telephoto photographing mode, and controls the exposure control mechanism. On the other hand, it is a switch for outputting a signal for responding to a change in the value of the F-number with respect to the predetermined aperture diameter for each mode. This switch is not related to the main part of the present invention, and its description is omitted.

Reference numeral 23 denotes the above-described lens barrier, which is a movable lens barrel 1.
4 is provided so as to be rotatable in the movable barrel 14 around a pin 23b implanted on the front surface in the movable barrel 14 and has one end at the movable barrel 1
It is urged clockwise by a barrier spring 24 fixed on the fourth side. At a portion of the lens barrier 23 bent at a right angle, a barrier switching cam 7 which projects forward from the mode selection lever 7 and whose tip projects forward toward the right side and is inclined.
A barrier pin 23a that brings the lens barrier 23 in front of the photographing lens 3 while charging the barrier spring 24 is in contact with the inclined surface of d. This barrier pin 23
Since the engagement between a and the inclined surface of the barrier switching cam 7d is released in a mode other than the lock mode, the lens barrier 23 is retracted from the front surface of the photographing lens 3 as shown in FIG. The portion of the lens barrier 23 having the barrier pin 23a and the portion of the barrier switching cam 7d are located in a cavity (not shown) in the lens barrel 2.

FIG. 4 is an explanatory diagram showing the relationship between the click of the mode selection lever 7 and the lock claw of the lock lever 12. As shown in FIG. In the figure, a lock claw 12a has a mountain-shaped inclined portion, and a wall portion 1 on the right side of the inclined portion stands vertically.
There are 2 l. The click 7b has a cutout shape similar to the shape of the lock claw 12a, and has a wall portion 7l with respect to a wall portion 12l of the lock claw 12a. Further, the shape of the click 7e is a notch mountain shape similar to the shape of the mountain portion of the lock claw 12a.

Switching from the lock mode to the standard photographing mode, from the standard photographing mode to the telephoto photographing mode, and from the telephoto photographing mode to the standard photographing mode can be performed by manually moving the operation member 5 left or right. But,
Switching from the standard shooting mode or the telephoto shooting mode to the lock mode by the operation member 5 is performed by clicking the wall 7l of the click 7b.
This is impossible because the click 7b and the lock claw 12a are engaged with each other and the wall 12l of the lock claw 12a abuts on each other.

Next, the operation of the above configuration will be described with reference to FIGS.

When the camera is in the lock mode, the camera is in the state shown in FIG. In this state, the mode selection lever 7 is positioned on the left side by the force of the mode selection lever spring 6. In this position, the tensioning lever projection 7a is also located on the left side. Locking claw 8c
Engages the tension 10e of the leg 10a of the light emitter 10 and holds the light emitter 10 pop-down as described above. Further, the movable lens barrel 14 is located at a position where it is retracted into the lens barrel 2,
The pin 23a is engaged with the barrier switching cam 7d so that the lens barrier 23 covers the front surface of the taking lens 3.

Next, the operation when the lock mode is switched to the standard photographing mode will be described. 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 clockwise rotation force of the tension lever 8 pushed by the tension lever spring 9.
With this movement, the tensioning lever projection 7a becomes the tensioning lever spring 9
Press the bent portion 8b of the strobe tension lever 8 rightward against the force of. 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 10e is released. At this time, the upward bias of the pop spring 11 causes the light emitting device 10 to be pushed up and popped up until the light emitting portion 10c thereof together with its leg 10a comes out of the upper portion of the camera body 1 as shown in FIG. The upward movement of the light emitting device 10 causes the lock lever 1 to be biased by the lock lever spring 13.
2 rotates counterclockwise with the lock claw 12a,
The lock claws 12a bite into the clicks 7b and they engage. At this time, since the operation member 5 is positioned at the position of the standard photographing mode, the movement of the operation member 5 by manual operation is stopped.

On the other hand, when the first switch 20 is switched from the lock mode to the standard photographing mode, the motor 15 is not energized as described later, and the movable lens barrel 14 holding the photographing lens 3 It is in the position where it does not move from the position in the lock mode. Further, with the rightward movement of the mode selection lever 7 as described above, the barrier switching cam 7d also moves rightward, so that the engagement between the cam 7d and the barrier pin 23a is released. Thereby, the lens barrier 23 rotates clockwise by the restoring force of the barrier spring 24 and retreats from above the photographing lens 3 as shown in FIG. 3, so that the camera is ready for standard photographing.

Next, the state of the camera when switching from the standard photographing mode to the telephoto photographing mode will be described.

The operation member 5 is moved to the right along with the mode selection lever 7 by manual operation 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 7d. At this time, the lock claw 12a is clicked 7b by the clockwise rotation of the lock lever 12.
When the lock lever 12 is rotated counterclockwise by the next urging of the lock lever spring 13, the lock lever 12 bites into and engages with the click 7c. Exactly when this engagement is performed, the mode selection lever 7 is at the position where it is fully moved rightward, which is when the camera is switched from the standard shooting mode to the telephoto shooting mode. As the mode selection lever 7 moves rightward, the first switch 20 is switched as described below, and the motor 15 is energized. The motor 15 rotates forward, and the rotational driving force is applied to the gears 16 and 1.
The feed screw 19 is transmitted to the feed screw 19 via the nuts 7 and 18, and further, by the rotation of the screw 19, the screw receiving portion 14 a is moved.
The movable barrel 14 is extended along the optical axis to the front of the camera together with the taking lens 3. Just when the photographing lens 3 reaches the position of the telephoto photographing mode, the second switch 21 is switched as described later, and the power supply to the motor 15 is stopped.
The camera is ready for telephoto shooting.

Next, the operation when the camera is switched from the telephoto mode to the standard mode shown in FIG. 3 will be described.

The operation member 5 is manually switched from the telephoto shooting mode shown in FIG. 3 to the position of the standard shooting mode in the left direction. With the movement of the operation member 5, the mode selection lever 7
Of the first switch 20 and the second section 2 of the first switch 20.
01 and 202, and the first switch 20 is switched as described later. At this time, the motor 1
5 is energized and rotates reversely, and this rotational force is transmitted to the gears 16 and 1.
7, 18 and the feed screw 19,
Is moved along the optical axis to the rearward position of the camera shown in FIG. 2, which is the position of the standard photographing mode, so that the camera is ready for standard photographing.

Next, the operation when the camera is switched from the telephoto shooting mode shown in FIG. 3 to the lock mode shown in FIG. 2 will be described.

As shown in FIG. 3, a force is applied to the head of the light-emitting device 10 which pops up and is pressed down against the force of the pop spring 11. Then, the light emitting device 10 pops down to the position shown in FIG. 2, that is, the position where the light emitting unit 10c of the light emitting device 10 is housed in the camera body 1. At this time, the reset button 10d of the light emitter 10 abuts on the push portion 12c of the lock lever 12 and pushes it down. Thereby, the lock lever 12 rotates clockwise with the lock claw 12a against the urging of the lock lever spring 13 in the counterclockwise direction.
The engagement between 2a and click 7e is released. When this engagement is released, the mode selection lever 7 moves fully to the left along with the operation member 5 by the restoring force of the mode selection lever spring 6 and the tension lever spring 9. At this time, the tensioning lever projection 7a does not press the bent portion 8b, and the restoring force of the tensioning lever spring 9 causes the strobe tensioning lever 8 to rotate clockwise together with the locking claw 8c. As a result, the locking claw 8c and the tension member 10e engage, and the light emitting device 10 is held in a pop-down state against the force of the pop spring 11.

On the other hand, when the projection 7h of the mode selection lever 7 is moved leftward to the lock mode position, the first switch 20 is switched as described later. The motor 15 is energized as will be described later, based on the relationship between the switched first switch 20 and the second switch 21 switched in the telephoto shooting mode position as shown in FIG. The motor 15 rotates in the reverse direction, and retracts the movable lens barrel 14 together with the photographing lens 3 to the position shown in FIG. 2 as described above, that is, to the position of the standard photographing mode (the position of the lock mode). When the movable barrel 14 is retracted,
When the barrier pin 23a contacts the inclined surface of the barrier switching cam 7d and the barrier pin 23a is guided along the inclined surface, a counterclockwise force is applied to the lens barrier 23, and the lens barrier 23 is charged while charging the barrier spring 24. Rotates counterclockwise so as to cover the front surface of the taking lens 3 and closes.

As described above, the light emitting device 10 is popped down and the lens barrier 23 covers the front surface of the photographing lens 3 so that the camera is held in a locked state.

Although the operation for switching from the lock mode to the telephoto shooting mode has not been described, the operation for switching from the lock mode to the standard shooting mode and the operation for switching from the standard shooting mode to the telephoto shooting mode are also described. It is obvious that the description of the operation is omitted. Switching from the standard shooting mode to the lock mode is almost the same as the operation of switching from the telephoto shooting mode to the lock mode except for the movement of the movable lens barrel 14, and a description of the operation is omitted. However, the mode selection lever 7 moves to the left together with the barrier switching cam 7d by the mode selection lever spring 6, and at this time, the barrier switching cam 7d pushes the barrier pin 23a to the left. Thereby, the lens barrier 23
Is closed against the force of the lens barrier spring 24.

When the mode is switched from the telephoto mode or the standard mode to the lock mode, the mode cannot be changed even if the operating member 5 is operated. Because, in the standard photographing mode, the lock claws 12a and the clicks 7b are engaged with each other and the walls 121 and 71 abut against each other and are locked. This is because the operation member 5 and the mode selection lever 7 do not move to the lock mode position on the left side in addition to the movement. Therefore, these switchings are performed only by pushing the light emitter 10 as described above.

[0030] In the above description, the Fider 4
However, according to the positioning of the operation member 5 at each mode position, the index 7e is also positioned, and according to the state of the selected mode, L and W on the frame mask are displayed to clearly indicate the mode. , T is indicated by the index 7e. Therefore, when switching the operation member 5, the operation member 5 may be switched while visually confirming which mode is in the viewfinder 4.

Next, a circuit for extending and retracting the movable lens barrel 14 will be described with reference to FIG. Reference numeral 20 denotes the above-mentioned first switch, two integrally moving bifurcated sections 201 and 202 and first to sixth switch patterns 2.
03 to 208, and the first and fourth switch patterns 203 and 206 are in the lock mode position (L in the drawing).
In the following, the position is abbreviated as L position. ) To the position of the telephoto shooting mode (the position of T in the figure, hereinafter abbreviated as T position), and the second and fifth switch patterns 204 and 207 are shifted from the L position to the position of the standard shooting mode (W in the figure). , Hereinafter abbreviated as W position).
The third and sixth switch patterns 205, 208 are second and fifth switch patterns 204, respectively.
It is at the T position on the extension of 207. Here, the first section 2
01 denotes a first switch pattern 203, a second switch pattern 204, and a third switch pattern 205.
The second piece 202 slides on the fourth switch pattern 206, the fifth switch pattern 207, and the sixth switch pattern 208 to open and close the first switch 20. .

Reference numeral 21 denotes the above-described second switch, which is a three-pronged third section 211 and seventh to ninth switch patterns 2.
12 to 214, the seventh switch pattern 2
Reference numeral 12 denotes a position from the movable barrel extension position to a position just before the movable lens barrel retraction position, an eighth switch pattern 213 extends from the movable barrel extension position to the movable lens barrel retraction position, and a ninth switch pattern 214 includes a movable lens barrel retraction. From the position to the position before the movable barrel extension position. Here, the movable barrel extending position of the switch pattern means that the third section 211 is in a position where the movable barrel is completely extended and comes into contact with the switch pattern at this position. The same applies to the movable lens barrel retracted position. The second switch 21
Opening and closing of the seventh to ninth switch patterns 212 to 21
4 is performed by sliding the third section 211.

Here, the first switch pattern 203
And the fourth switch pattern 206 are connected by the power supply battery 25, and the second and sixth switch patterns 20 are connected.
4, 208 are respectively connected to seventh and ninth switch patterns 212 and 214, and the third and fifth switch patterns 205 and 207 are commonly connected to one terminal of the motor 15, and are connected to an eighth switch pattern. The pattern 213 is the motor 15
Connected to other terminals. In the lock mode, the first and second pieces 201 and 202 of the first switch 20 are at the L position, that is, the position shown by the solid line in the figure, and the third piece 211 is at the retracted position of the movable lens barrel in the figure. It is located like Therefore, in this state, the third section 211
The motor 15 is not energized because the contact between the switch 15 and the seventh switch pattern 212 is cut off.

As described above, even when the operation member 5 is switched to switch the camera from the lock mode to the standard shooting mode, only the first and second sections 201 and 202 move from the L position to the W position. The switching state of the first switch 20 is the same as that in the lock mode. Therefore,
The motor 15 is not energized, and the movable lens barrel 14 remains at the same position (the position shown by the solid line in the figure).

Next, when the operating member is switched as described above to switch the camera from the lock mode or the standard photographing mode to the telephoto photographing mode, the first and second slices 201 and 202 are obtained.
Is located at a position indicated by a dashed line from the L or W position to the T position. Then, the power supply battery 25 → the first switch pattern 203 → the first piece 201 → the third switch pattern 205 → the motor 15 (current is in the direction of arrow A) →
Eighth switch pattern 213 → third slice 211 →
The ninth switch pattern 214 → the sixth switch pattern 208 → the second slice 202 → the fourth switch pattern 206 → a closed circuit of the power supply battery 25 is formed, and the motor 15 is energized to perform forward rotation. The movable lens barrel 14 is extended from a position shown by a solid line to a movable lens barrel extending position shown by a two-dot chain line. When the movable barrel 14 has just moved to this position, the position of the third section 211 and the ninth switch pattern 21 are indicated by the two-dot chain line.
4 is disconnected, and the closed circuit becomes an open circuit.
When the power supply to the movable lens 14 is stopped, the movement of the movable lens barrel 14 is stopped and positioning is performed.

Next, when the operating member 5 is switched as described above to set the camera from the telephoto shooting mode to the standard shooting mode or the lock mode by popping down the light emitter, the first and second sections 201, 202 is switched from the T position shown by the dashed line to the W or L position.

At this time, the power supply battery 25 → the first switch pattern 203 → the first slice 201 → the second switch pattern 204 → the seventh switch pattern 212 →
Third section 211 → Eighth switch pattern 213 →
Motor 15 (current is in the direction of arrow B) → Fifth switch pattern 207 → Second piece 202 → Fourth switch pattern 206 → Closed circuit of power supply battery 25 is formed, and motor 15 is energized and rotates reversely The movable lens barrel 14 is retracted from the position shown by the two-dot chain line to the movable lens barrel retracting position shown by the solid line. When the movable barrel 14 has just moved to this position, the contact between the third piece 211 and the seventh switch pattern 212 is cut off as shown by the solid line indicating the position of the third piece 211, The above-mentioned closed circuit becomes an open circuit, the energization of the motor 15 is cut off, the movement of the movable lens barrel 14 is stopped, and positioning is performed.

Switching from the standard photographing mode to the lock mode by popping down the light emitting device is the same as the reverse operation at the time of the reverse switching, and the power supply to the motor 15 is not performed as described above, and there is no change.

Next, an embodiment of the present invention will be described with reference to FIGS.

The present embodiment is different from the above embodiment in that a position of another movable lens barrel in which the movable lens barrel is retracted in the camera in the lock mode is provided. FIG. 6 is a perspective view of the camera showing a state in the lock mode in which the movable lens barrel is collapsed, and FIG. 7 is a circuit diagram for driving the camera of FIG. In these figures, the portions of the camera denoted by the same reference numerals as those in the above-described example are completely the same as those in the above-described configuration, and thus the description thereof is omitted. Reference numeral 7 'denotes a mode selection lever which moves with the left or right hand operation of the operation member 5, and a first switch 2 described later is provided on a projection 7h thereof.
0 ′ are provided with first and second sections 201 ′ and 202 ′. These sections 201 ′ and 202 ′ slide on a switch pattern group fixed to the camera body 1 side to form the first section 201 ′ and 202 ′. Switch 20 is opened and closed. Also, the mode selection lever projection 7'a at the right end of the mode selection lever 7 'and the bent portion 8b of the strobe locking lever 8 are spaced apart from each other at the time of the lock mode, and the camera is taken from the lock mode. In order to make it possible, the mode selection lever 7 'must be fully slid rightward from the position in the standard shooting mode toward the position in the telephoto shooting mode, so that the selection lever projection 7'a is bent at the bent portion 8b.
, And press it to make the tension 10e and the locking claw 8c
And the light emitting device 10 cannot be popped up. Therefore, to bring the camera into the photographing state (telephoto photographing mode) from the lock mode, the light emitting device 10 is popped up by moving the operation member 5 to the position in the telephoto photographing mode, and the first switch 2 described later is used.
When the motor 15 is energized by switching 0 ', the movable barrel 14 is extended to a movable barrel extension position (hereinafter, abbreviated as an LT position) which is a position in the telephoto shooting mode as shown in FIG. By switching the second switch 21 ', the power supply to the motor 15 is stopped, and the movable lens barrel is positioned at the LT position.
Is retracted from the front surface of the photographing lens 3 as in the above-described example, and telephoto photographing becomes possible.

When the mode is switched from the telephoto shooting mode to the standard shooting mode, it is obvious from the above-mentioned example, and the description is omitted.

When switching from the telephoto shooting mode or the standard shooting mode to the lock mode, the head of the light emitting device 10 can be pressed down by hand and popped down as in the above-described example. However, the difference from the above-mentioned example is that the restoring force of the mode selection lever spring 6 in the left direction causes
The mode selection lever 7 'returns to the full left position, which is the lock mode position. At this time, the first switch 20 'is switched, the motor 15 is energized, and the movable lens barrel 14 is in the standard shooting mode position similar to that shown in FIG. 2 (the lens barrier 23 is open). A movable lens barrel retracted position (hereinafter abbreviated as LW position) or a movable lens barrel which is a lock mode position located further from the LT position shown in FIG. 3 to the rear of the camera than the LT position shown in FIG. It retracts to the storage position (hereinafter abbreviated as LL position). When the movable lens barrel 14 reaches the LL position, the motor 1 is switched by the switching of the second switch 21 'as described later.
When the power supply to 5 is cut off, it is positioned at this position and collapsed. Of course, similarly to the above-described example, the barrier pin 23a is guided along the inclined surface of the barrier switching cam 7d, and the lens barrier 23 covers the front surface of the photographing lens 3 and closes.

Next, the driving of the movable barrel 14 will be described with reference to FIG. In the figure, 201 ′, 20
Reference numeral 2 'denotes the first and second sections of the two bifurcations which move independently and integrally with each other. The solid line is at the L position, the dashed line is at the W position, and the two-dot chain line is at the T position. It means that it is located at the position. Reference numerals 203 'to 209' denote first 'to seventh' switch patterns. The first 'and fifth' switch patterns 203 'and 207' are from the L position to the T position, and are used for the sixth 'switch pattern. Pattern 20
8 'is from the L position to the W position, the second' switch pattern 204 'is only at the L position, the third' switch pattern 205 'is only at the W position, and the 4' and 7 '
The switch patterns 206 'and 209' are provided only at the T position. The first switch 20 'includes first' and second 'pieces 201' and 202 'and first' to seventh 'switch patterns 203' to 209 '. The first switch pattern 203 '
The second 'to fourth' switch patterns 204 'to 206' are arranged in a straight line in parallel with the first section, and the first 'section slides on these first' to fourth 'switch patterns. Switch. Further, sixth 'and seventh' switch patterns 208 'and 209' are arranged on a straight line in parallel with the fifth 'switch pattern 207', and the second 'intercept 202' is composed of the fifth to the fifth slices 202 '. 7 'switch pattern 20
Switching is performed by sliding on 7 'to 209'.

Numeral 211 'indicates four or more electrically conductive sections. The solid line indicates the position LL, the one-dot chain line indicates the LW position, and the two-dot chain line indicates the LT position.
The same applies to the movable lens barrel 14. 212 '
215 ′ are eighth ′ to eleventh switch patterns, which are arranged in parallel, and the eighth ′ switch patterns 21
2 ′ is from the LT position to just before the LL position, the ninth switch pattern 213 ′ is from the LT position to just before the LW position, the 10 ′ switch pattern 214 ′ is from the LT position to the LL position, The eleventh switch pattern 215 'extends from the LL position to just before the LT position. The second switch 21 'is composed of a third' section 211 'and eighth to eleventh switch patterns, and the third' section 211 'is located on the eighth' to eleventh switch pattern. To switch. In addition, 1st ~
The seventh 'switch pattern and the eighth' to eleventh 'switch patterns are formed by, for example, applying a copper foil or the like on each printed circuit board.

The power battery 25 is connected between the first and fifth switch patterns 203 'and 207', and the second and eighth switch patterns 204 'and 212', and the third and fifth switch patterns 204 'and 212'. 9 'switch patterns 205' and 21
3 ′, 4 ′ switch pattern 206 ′ and motor 1
5, one input terminal and sixth 'switch pattern 20
8 ', 9' and 11 'switch patterns 209'
215 ′, the tenth switch pattern 214 ′ and the other input terminal of the motor 15 are connected. The first 'and second' sections 201 ', 202' are L
When switching from the position to the T position, 25 → 203 ′ → 20
1 '→ 206' → 15 (current is positive rotation in the direction of arrow A) →
214 '→ 211' → 215 '→ 209' → 202 '→
A closed circuit of 207 ′ → 25 (names are omitted here for simplicity of description; the same applies hereinafter) is formed, and the movable lens barrel 14 at the LL position and the third section 211 ′ are moved to the LT position. It is paid out. When they reach this position, the third 'section 211' and the eleventh switch pattern 2
When the contact of 15 'is cut off, the closed circuit becomes an open circuit, the motor 15 stops, and the movable lens barrel 14 is positioned at the LT position.

First 'and second' sections 201 ', 20
When 2 ′ is switched from the T position to the W position, 25 → 20
3 '→ 201' → 205 '→ 213' → 211 '→ 21
4 '→ 15 (current rotates in reverse direction in the direction of arrow B) → 208' →
A closed circuit of 202 ′ → 207 ′ → 25 is formed, and the movable barrel 14 at the LT position and the third section 211 ′ are LW
Rolled into position. The movable lens barrel 14 is connected to the third 'section 21.
When 1 ′ reaches the LW position, the 3 ′ section 211 ′
Then, the contact between the ninth switch pattern 213 ′ and the ninth switch pattern 213 ′ is cut off, the closed circuit becomes an open circuit, the motor 15 stops, and the positioning of the movable lens barrel 14 at the LW position ends. Switching from the W position to the T position of the first 'and second' sections 201 'and 202' is the same as the switching from the L position to the T position, and will not be described because it is obvious.

First 'and second' sections 201 ', 20
Switching from 2 'W position or T position to L position
25 → 203 ′ → 201 ′ → 204 ′ → 212 ′ → 21
A closed circuit of 1 ′ → 214 ′ → 15 (current rotates in the direction of arrow B in the reverse direction) → 208 ′ → 202 ′ → 207 ′ → 25 is formed. The reverse rotation of the motor 15 causes the movable barrel 14 and the third ′. The section 211 'of the above is retracted from the LW position or the LT position to the LL position further behind the camera. When the movable barrel 14 and the third 'section 211' reach the LL position, the contact between the third 'section 211' and the eighth 'switch pattern 212' is cut off, and the motor 15 stops rotating. Then, the movable lens barrel 14 and the third 'section 211' are located at the LL position and collapsed.

In the mark type finder of the above embodiment, the L, W, and T symbol marks are indicated by indices. In addition to these, the mask indices 7e having notches are used as shown in FIG. It is also effective to make only the mode symbol mark stand out.

(Correspondence between Invention and Embodiment) In the above embodiment, the motor 15 is used as the motor of the present invention, the taking lens 3 is used as the lens system of the present invention, the lens barrier 23 is used as the protective cover of the present invention, and the barrier spring is used. 24 corresponds to the urging means of the present invention, the barrier pin 23a corresponds to the cover closing means of the present invention, and the barrier switching cam 7d corresponds to the operating means of the present invention. In the above embodiments, the position in the telephoto shooting mode or the position in the standard shooting mode corresponds to the shooting position of the present invention, and the position in the lock mode corresponds to the non-shooting position of the present invention.

[0050]

As described above, according to the present invention, the degree of freedom in design is high, the structure is simple, and downsizing can be achieved.
The present invention can provide a lens apparatus for a camera that has good operability and includes a lens system that moves between a photographing position and a non-photographing position, and a protective cover that opens and closes the front of the lens system.

[Brief description of the drawings]

FIG. 1 is an external view of a camera which is a premise of an embodiment of the present invention.

FIG. 2 is a perspective view illustrating a configuration of a main part of the camera in FIG. 1 in a lock mode.

FIG. 3 is a perspective view illustrating a configuration of a main part of the camera in FIG. 1 in a telephoto shooting mode.

FIG. 4 is a partially enlarged view showing a relationship between a lock claw and a click of the camera in FIG. 1;

FIG. 5 is a circuit diagram for driving the camera of FIG. 1;

FIG. 6 is a perspective view of a camera according to the embodiment of the present invention.

FIG. 7 is a circuit diagram for driving the camera of FIG. 6;

FIG. 8 is an explanatory diagram of another embodiment of the mark type finder.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Camera main body 2 Lens barrel 3 Shooting lens 4 Mark-type finder 5 Operation member 7, 7 'Mode selection lever 7b, 7c Click 7d Barrier switching cam 8 Strobe tension lever 10 Light emitting device 10d Reset button 12a Lock claw 14 Movable barrel 15 Motor 19 Feed screw 20, 20 'First switch 21, 21' Second switch 23 Lens barrier 23a Barrier pin 24 Barrier spring

Claims (1)

(57) [Claims] 1. A motor, a lens system that moves between a photographing position and a non-photographing position by a driving force of the motor, a protective cover that moves with the lens system and opens and closes the front of the lens system, and a protective cover. Biasing means for biasing in the opening direction;
When the lens system is in the photographing position, the link between the cover closing unit that moves together with the lens system to close the protection cover and the cover closing unit is disconnected, and the protection is performed by the urging force of the urging unit. When the cover is opened and the lens system moves from the photographing position to the non-photographing position, the lens system can be linked to the cover closing means, and the protective cover is closed against the urging force of the urging means. Lens device for a camera, comprising: