JP2855582B2 - Camera power transmission device and camera - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a camera of the power transmission device 及 for selectively transferring the driving force to a plurality of operating system of the camera
And improvement of cameras .

[0002]

2. Description of the Related Art As is well known, a recent electric camera starts winding and rewinding of a film, and a zoom lens barrel, a shutter, a lens, and an optical system for a close-up state are appropriately driven by a motor. It has become.

Conventionally, a plurality of motors are provided to drive these mechanisms, or a time-series means using a differential mechanism or the like which matches the sequence of a specific camera is employed. Have been.

However, a camera having a large number of motors, such as the former camera, is disadvantageous not only for miniaturization of the camera but also complicates mounting for wiring. There is a disadvantage that the cost of parts including the motor and the assembly cost are increased.

In the case of a camera adopting a time-series mechanism like the latter camera, a complicated mechanism such as a differential means must be used, and it is difficult to guarantee operation stability. In addition, since it becomes difficult to perform operations other than the original sequence, it becomes difficult to develop a camera system and add functions. For the same reason, it is difficult to set a standard mechanism and to use it as a common component for many products, and it is necessary to design a new mechanism for each product, which requires a large number of development steps. However, there is a disadvantage that the mass production effect cannot be expected.

In order to overcome this drawback, the applicant of the present invention has proposed a sun gear driven by a drive motor and a planetary gear rotating therearound, such as a collapsible / extending mechanism of a lens barrel, a zoom mechanism, and a film. A plurality of output gears respectively connected to a plurality of mechanisms such as a feeding mechanism; a means for selectively transmitting the driving force of the sun gear to one of the output gears via a planetary gear; And a means for detecting whether the planetary gears are meshed with each other, and a power split device configured to transmit the power of the single drive motor to an arbitrary output gear has been filed (not disclosed). I have. By incorporating such a power split device into a camera, it is possible to realize a versatile and expandable camera without impairing compactness and cost reduction.

[0007]

By the way, in the case of a camera provided with the above-described power split device, after the photographing is completed, the planetary gear meshes with the output gear connected to the film feeding mechanism, and the film is wound around the photographing frame. After that, if the camera has a zoom mechanism (including one having a variable bifocal length), the planetary gear is engaged with an output gear connected to the zoom mechanism to perform the next photographing. Although it is common to have a configuration provided with the camera, if the camera is a camera that enables continuous shooting, performing the above-described operation at the time of continuous shooting also impairs quick shooting. Become.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a camera power transmission device and a camera capable of transmitting power effective for quick shooting when a continuous shooting mode is selected. Is what you do.

[0009]

Means for Solving the Problems To achieve the above object, the present invention according to claim 1 transmits a driving force by rotation.
The first rotating part that reaches and the rotation of the first rotating part
And the second rotation of revolution around the first rotating part
A revolving part and the second rotating part revolving around selectively
And the driving force from the first rotating portion is transmitted.
A plurality of actuation systems including an actuation system for feeding ;
Regulating means for regulating the revolution of the rotating part;
Determining means for determining the revolving position of the rotating portion of
The second rotating part is driven by the
The second rotation is achieved by reaching a position where the second rotation
Controlling the regulating means so as to regulate the revolution of the part,
After the operation, the operation system for the feeding by the second rotating unit
To perform the feeding operation by transmitting the driving force of the first rotating portion to the
If the camera is not in continuous shooting mode,
In the case of inactive and continuous shooting mode,
A power transmission device for a camera having a control means for operating the restriction means . Further, according to claim 2
The present invention provides a first rotating unit that transmits a driving force by rotation.
Rotating in conjunction with the rotation of the first rotating portion and the first
A second rotating portion that revolves around a rotating portion of
When the rotating part revolves, the first part selectively engages with the first part.
Operating system for feeding the driving force from the rotating part
A plurality of operating systems including
Regulating means and the revolving position of the revolving second rotating part
Determining means for determining whether
A position in which the second rotating part is engaged with the operating system for feeding.
To regulate the revolution of the second rotating part.
The control means is controlled in such a manner that the second
The first rotating part to the operating system for feeding by the rotating part;
After transmitting the driving force of the
If not, deactivate the regulating means and
When the continuous shooting mode is set, the regulating means is activated.
This is a camera having control means for storing the information.

[0010]

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

FIG. 16 is a diagram showing only a mechanical main part of a camera having a power split device according to an embodiment of the present invention.

In FIG. 16, reference numeral 6 denotes a sun gear, 7 denotes a planetary gear, and 9a to 9d denote output gears serving as power sources as described below, which form part of a power split device.

The output gear 9a is a lens barrel 31 holding a lens drive mechanism such as a lens barrel 316 and a cam ring 315.
The helicoid gear 310 for feeding and collapsing of No. 4 is rotated by a gear train 310a not shown in the figure.

The output gear 9 b is provided with a lens barrel 31 that is extended.
The bayonet ring 311 is fixed to the main body 317 so as not to be collapsed, and is rotated by a gear train 311a (not shown).

An output gear 9c is a zoom drive gear 312 for moving a cam ring 315 in a lens barrel 314 to perform zooming.
Is rotated by a gear train 312a not shown in the figure.

The output gear 9d meshes with the film feeding planetary gear 304 via an arm 309, and forms a planetary gear mechanism for film feeding with these. It is gear. The fork (not shown) is caused by the left or right rotation of the output gear 9d .
Shown) or spool - will be selectively rotated Le 305, film patrol - winding or film of the film F than Ne within 313 patrol - Ne 313 in return f of the winding is performed.

Next, the configuration of a power split device including the sun gear 6, the planetary gear 7, and the output gears 9a to 9d will be described with reference to FIGS. In these figures, the parts (gear,
(Springs, etc.) are shown, and ground plates for attaching and positioning them are omitted.

As shown in FIG. 1 and FIG. 3, output gears 9a to 9d to which power is transmitted next to the planetary gear 7 are arranged on the circumference so that the planetary gear 7 can revolve 360 degrees.
In this embodiment, four output gears are used. However, the number of output gears need not be four, but may be two or more.

The planetary gear 7 rotates around a planetary shaft 8a, and receives a certain degree of resistance to rotation by inserting a spring 8b. The planetary shaft 8a and the planetary gear 7 are mounted on a rotating arm 5, on which a sun gear 6 is arranged.
The sun gear 6 is configured to rotate by rotation of the output shaft 3.

Although the output shaft 3 is rotated by the power of the motor 1, the output shaft 3 needs a certain amount of torque, so that in the case of a motor used in a camera, the speed reduction mechanism 2 is used. , The force is transmitted to the output shaft 3.

The rotating arm 5 and the output shaft 3 are rotatably fixed to the bearing 4.
The output shaft 3 slides and rotates inside the bearing 4. The bearing 4 is integrally formed on a base plate with a shaft (omitted in the drawing) which rotatably fixes the output gears 9a to 9d in a manner like insert molding. As a result, the force by which the rotating arm 5 rotates about the sun gear 6 is generated only by the revolving force of the planetary gear 7.

The rotating arm 5 has several upright bent portions, and a hole is formed in the upright bent portion 5a.
A rotation stopping arm 12 arranged above the rotating arm 5.
Also, holes 12b are formed, and the rotation stopping arm 12 is rotatably stopped with respect to the rotating arm 5 by a rotating arm shaft 13a inserted into these holes. As a result, the rotation stopping arm 12 can rotate about the rotation arm shaft 13a, and the rotation is performed in a state where the rotation range is almost horizontal, so that the tip 12c moves up and down. A hole 12a is formed in the rotation stopping arm 12.
Are formed, and the above-mentioned planetary shaft 8a penetrates through the hole 12a (the state of FIG. 2). In this state, since the hole 12a is an elongated hole, there is no restriction on the vertical rotation of the detent arm 12 (in other words, the vertical movement of the tip 12c), but the hole 12a is integral with the planet shaft 8a. The rotating arm 5 rotates horizontally in conjunction with the horizontal rotation of the rotating arm 5. And a rotating arm shaft 13a.
, A torsion spring 13b passes therethrough and urges the tip 12c of the rotation stopping arm 12 upward.

Above the anti-rotation arm 12, the pulse plate 1
4 is provided, the upright bent portion 5b of the rotating arm 5 is penetrated and fixed in the hole 14b formed therein, and the notch 8d of the planetary shaft 8a is fixed in the long hole 14a. The pulse plate 14 also horizontally rotates together with the horizontal rotation of the rotating arm 5.

An arm 15 is arranged above the pulse plate 14, and is rotatably stopped by an arm shaft 15b. The arm shaft 15b is fixed by a main plate (not shown). The arm shaft 15b is also provided with a torsion spring 15c similar to the above-described rotation stopping arm 12, and its urging direction is such that one end 15a of the arm is in FIG. 1 and FIG. The force is directed downward. A projection 15e is fixed to one end 15a of the arm, and passes through a large hole 14c provided in the pulse plate 14 to urge the central portion 12d of the rotation stopping arm 12 downward.

The other end 15d of the arm 15 has a plunger 1
6 movable yokes 16a are arranged, and the plunger 1
When the movable yoke 16a is energized and the movable yoke 16a is sucked downward in FIGS. 1 and 2, the projection 15e moves upward in the drawings. The strength of the spring balance of the torsion springs 13b and 15c is set so that the vertical movement of the rotation stopping arm 12 is linked to the movement of the projection 15e of the arm 15.

The reason and effect of pushing the center when the projection 15e of the arm 15 urges the rotation stopping arm 12 downward, for example, in FIG. 1 will be described below.

The horizontal rotation center of the rotation stopping arm 12 which rotates further in conjunction with the rotating arm 5 which rotates horizontally in association with the revolution of the planetary gear 7 is the output shaft 3, that is, the sun gear 6. (Per 12d in FIG. 1). No matter what position the planetary gear 7 revolves, the center (12d) of the rotation stopping arm 12 is the center of rotation.
Regardless of the position of the rotation stop arm 12 in conjunction with the sun gear 6, the planetary gear 7, the rotation arm 5, and the like (for example, the state of each (a) in FIGS. 5 to 9), Under the same conditions there (12
d) can be pushed by the projection 15e of the arm 15, and the tip 12c of the rotation stopping arm 12 can be moved up and down. For this reason, the revolution of the planetary gear 7 is stopped and the output gear 9 is stopped.
The operation for inserting the tip 12c of the detent arm 12 into the notch of the crown stopper 10 in order to transmit power to a to 9d is performed by the protrusion 15e of the arm 15 when the detent arm 12 is rotated. A simple mechanism that only urges the center (12d) is sufficient regardless of the above.

Immediately above the output gears 9a to 9d, that is, between the rotating arm 5 and the rotation stopping arm 12, a crown stopper 10 and a stopper 11 are fixed so as to overlap with a base plate (not shown). . Each of the stoppers 10 and 11 is provided with a notch, and has such a shape that the tip 12c of the rotation stopping arm 12 can pass through the notch.

Further, as shown in FIG. 4 (a partially enlarged view of FIG. 3), the crown stopper 1 is
The angle Z of the notch formed by the end faces 10a and 10b of 0, the angle Y of the notch formed by the end faces 11a and 11b of the pull-out stopper 11, and the angle X of the tip 12c of the detent arm 12.
The degrees are formed so as to satisfy the relationship of Z>Y> X. As a result, the notch of the pull-out stopper 11 is in a state like “eave” of the notch of the crown stopper 10. The notch is located above the output gears 9a to 9d. The fixed height of each of the stoppers 10 and 11 (the height in the vertical direction in FIG. 2) is set so that the following two states are possible. That is, 1) the rotation stopping arm 1 in conjunction with the suction of the plunger 16
When the tip 12c of the second arm 12 moves upward, the tip 12c of the rotation stopping arm 12 does not engage with the notch of both stoppers 10, 11 (see FIG. 6 described later).

2) When the plunger 16 is not suctioning, the projection 15e provided on the arm 15 urges the rotation stopping arm 12 downward, so that the notch end face 10a of the crown stopper 10 is cut. And 10b come to the height of the tip 12c of the rotation stopping arm (the state of FIG. 2).

Thus, in the state 1) (the state of FIG. 6 described later), the rotating arm 5 and the components attached thereto (the rotation stopping arm 12, the planetary shaft 8a, the pulse plate 14, etc.). The planetary gear 7 and the planetary gear 7 can rotate freely around the bearing 4 as a unit, and the planetary gear 7 revolves freely with the rotation of the output shaft 3 and the sun gear 6. At this time, the planetary gear 7
Revolves while sequentially meshing with the output gears 9a to 9d arranged on the circumference.

In the state 2), the rotation of the rotation stopper arm 12 in the horizontal direction is restricted by the end faces 10a and 10b of the crown stopper 10, so that the rotation arm 5 is rotated.
Cannot rotate because it is integral with it, and stops the revolution of the planetary gear 7. This state corresponds to FIG. 2, FIG. 3, and FIG.

The planetary gear 7 whose revolution is regulated as described above rotates at that position, that is, the notch position of each of the stoppers 10 and 11, but at that time, the planetary gear 7 is just the output gear. Since it is in mesh with any one of 9a to 9d and forms a gear train, the rotation of the sun gear 6 can be transmitted. The rotation direction can be transmitted to the output gears 9a to 9d on either side.

The crown stopper 10 is provided with a vertical bent portion 10c. The vertical bent portion 10c makes it impossible for the planetary gear 7 to revolve freely over 360 degrees, so that the planetary gear 7 only revolves for one left and right rotation. That is, the plunger 16
The tip 12c of the detent arm 12 is positioned above the crown stopper 10 and the pull-out stopper 11 (the state of FIG. 6 described later) by the suction of The bent portion 10c is a rotation stopping arm 1.
Since it serves as a stopper for the second tip 12c, the revolution is stopped. This is the state shown in FIG. 5 or FIG. However, in this position, since the upright bent portion 10c functions as a stopper, the planetary gear 7 starts to rotate.
The upright bent portion 10c is provided at a place where the planetary gear 7 does not mesh with any of the output gears 9a to 9d.

When the planetary gear 7 revolves, the rotating arm 5 and the planetary shaft 8a also rotate about the sun gear 6 accordingly. Therefore, the pulse plate 14 that rotates integrally therewith rotates in conjunction with the revolution of the planetary gear 7. Light and dark patterns are formed on the pulse plate 14 so that the light and dark signals (pulses) are detected by the photocoupler 17 and a pulse signal detection circuit 22 (see FIG. 17) described later. Has become. The light and dark patterns are detected by the output of the photocoupler 17 (and the pulse signal detection circuit 22 described later) when the planetary gear 7 is engaged with the output gears 9a to 9d and when not. It has a pattern shape as possible.

In this embodiment, the planetary gear 7 and the output gear 9a
A bright pattern 14e is formed so that a bright signal comes when any one of .about.9d is meshed, and a dark pattern 14d is formed so that a dark signal comes when any of the meshes is not meshed (see FIG. 1). Since the number of output gears 9a to 9d is four in this embodiment, there are also four bright patterns. Thus, the revolving position of the planetary gear 7 can be determined by the output of the photocoupler 17 (and the pulse signal detection circuit 22 described later).

Next, the operation of the power split device having the above configuration will be described.

In the rotation direction of the sun gear 6, as shown in FIG. 5A, the clockwise direction is "Rv" and the counterclockwise direction is "Fw". This is the same as the direction of revolution of the planetary gear 7, the direction of rotation of each of the output gears 9a to 9d, the rotating arm 5 and the rotation stopping arm 12, and the direction of rotation of the motor 1. Further, the revolving area of the planetary gear 7 is represented by X and the numerals. This is the same as indicating the position of the tip 12c of the rotation stopping arm 12 with respect to the crown stopper 10. X is an area including the “initial position 10d” that does not mesh with any of the output gears 9a to 9d.

,, Are planetary gear 7 and output gear 9
a to 9b are engaged with each other, and this area (position) is detected by detecting the amount of change of the “bright” and “dark” pulses of the pulse plate 14 from the output of the photocoupler 17, and thereby a control circuit 24 (see FIG. ). That is, the planetary gears 7 are shifted in the order of →→→ (FIG. 5 (a) → FIG. 6 (a) →
7A) and Rv revolution, the photocoupler 17
Detects the light and dark patterns of the pulse plate 14 to output light and dark signals as shown in FIG. 11, whereby the planetary gear 7 is located in the region However, it can be seen that it is in a state of meshing with any of the output gears 9a to 9b.
, The output gear 9a in this case.
It can be seen that all the gears are not meshed with each other.

It should be noted that the planetary gear 7 is a crown stopper 1
0 bending part 10c and the tip 12c of the detent arm 12.
As described above, it is not possible to revolve in the region from X to the region from to X.

In order to revolve the planetary gear 7, the plunger 16 is energized, and when the plunger 16 is revolved, if the energization of the plunger 16 is stopped when the planetary gear 7 is in one of the regions, the rotation stop arm. Tip 12 of the program 12
c is in a state of riding on the stopper 11 (the state of FIG. 8).

In this state, the rotation arm 5, the rotation stop arm
Parts that rotate about the bearing 4 such as the motor 12, the planetary gear 7, the pulse plate 14, etc. are in an unstable position. That is, the tip 12c of the rotation stop arm 12 slips off the stopper 11 due to some vibration or the like,
,,, Fall into the notched portion (for example, the state of FIG. 9). Then, the planetary gear 7 which should not have originally meshed and the output gears 9a to 9d mesh with each other due to vibration or the like. On the other hand, in the area of X,
In particular, in the range of the "initial position 10d", when the power supply to the plunger 16 is stopped and the tip 12c of the rotation stopping arm 12 enters there, similarly to the notch of the crown stopper 10 in the other areas,. The planetary gear 7 cannot enter the space between the upright bent portion 10c and the end face 10e and revolves (FIG. 7).
(State of (a)). Moreover, there are output gears 9a to 9d
Therefore, no power is transmitted even if the motor 1 rotates, and can be considered as a so-called "neutral" position.

As described above, the planetary gear 7 has any output gear 9a to 9g.
By providing an "initial position" that can rotate without engaging with 9d and revolving, the present apparatus can be stably stopped.

Here, the basic operation of the power split device according to the present embodiment is described as follows: "A planetary gear 7 revolving around the sun gear 6 revolves around an arbitrary output gear which surrounds the circumference thereof. The revolving motion is stopped at 9a to 9d, and the rotation of the sun gear 6 is transmitted to the output gears 9a to 9d only by rotating itself. "The outline of the series of operations will be described below.

First, when the plunger 16 is energized, the rotation stopping arm 12 is disengaged from the notch of the crown stopper 10, and the planetary gear 7 can freely revolve. Next, the motor 1 is rotated to revolve the planetary gear 7 in an arbitrary direction. At this time, the pulse plate 14 also rotates, and the rotation amount of the pulse plate 14 is detected by the output of the photocoupler 17, that is, the bright and dark pulses generated by the rotation of the pulse plate 14 are detected. By counting, it is detected where the planetary gear 7 is located in X〜. And the output gear 9a to transmit power
When it is detected that the planetary gear 7 has revolved to 9d,
De-energize the plunger 16 and turn off the rotation stop arm.
The tip 12c of the gear 12 is inserted into the notch of the crown stopper 10 to regulate the revolution of the planetary gear 7. Next, motor 1
Is transmitted to output gears 9a to 9d to output any output gear 9
Power is transmitted to a to 9d.

Although the details will be described later in the section "Incoming operation" and "Unplugging operation", since the pulse plate 14 rotates with the revolution of the planetary gear 7, the revolving position of the planetary gear 7 is changed by the photocoupler 17. Output (bright and dark pulse change)
In the above-described operation part, when it is detected that the planetary gear 7 has revolved to the output gears 9a to 9d where power is to be transmitted, the energization of the plunger 16 is turned off. How the gears 9a to 9d are engaged with each other, or the tip 1 of the detent arm 12
It is necessary to determine the position of the 2c with respect to the crown stopper 10 and the pull-out stopper 11, which is determined by the fall of the pulse from "bright" to "dark" and the pulse from "dark" to "bright". Is determined by the rise of That is, by using the pulse plate 14 and the photocoupler 17, it is possible to detect the rising and falling of the pulse in addition to counting the amount of change of the "bright" and "dark" pulses. By controlling the rotor 1 and the plunger 16, fine control of the "stop" of the crown stopper 10 of the rotation stop arm 12 into and out of the notch of the crown stopper 10 is performed.

Next, "initial position setting" will be described.

The pulse plate 14 and the photocoupler 17 are used in order to know where the revolving position of the planetary gear 7 is from X to X. As shown in FIG. Since there are only two, it is possible to detect only how much the planetary gear 7 has revolved since the start of the detection, that is, only the amount of change of the pulse signal of the count. For this reason, when the apparatus starts up, it is impossible to know the location (initial state) where the planetary gear 7 was. For this reason, regardless of the state, be sure to set “Initial position 10
The operation of "determining d" is controlled so as to be performed when the apparatus is started up. This operation is called “initial position setting”.

As the movement, the plunger 16 is energized,
The planetary gear 7 is allowed to revolve, and the planetary gear 7 is unconditionally brought into the Fw orbital direction, that is, is brought into the region of ｗ. Motor 1
Is stopped, and the planetary gear 7 is stably stopped there. This state is in the region of X, more specifically, the position of the initial position 10d of the crown stopper 10. From there, the planetary gear 7 is driven by the "bright" and "dark" signals by the combination of the photocoupler 17 and the pulse plate 14. X ~
Where it is located in the area.

At this time, it is important to point out that the upright bent portion 10c of the crown stopper 10 and the anti-rotation arm 12 which also serve as abutting portions for the left and right revolving restrictions when the planetary gear 7 revolves.
Of the planetary gear 7 does not mesh with any of the output gears 9a to 9d as described above (the state of FIGS. 5A and 7A).

When "initial position setting" is performed: When it is not possible to determine in which region the planetary gear 7 is located at X-up when the apparatus starts up; When "misselection of power transmission destination" described later That is, when there is a discrepancy between the position of the planetary gear 7 supposed to be stored by the control circuit 24 described later of the present apparatus and the position where the planetary gear 7 is actually located, the original position of the planetary gear 7 Because the position is not known, even if the position detection based on the relative change is performed by using the pulse plate 14 and the photocoupler 17 in order to detect the revolving position of the planetary gear 7 thereafter, the position has no meaning.

Therefore, as an operation in the first half of “initial position setting”, after the plunger 16 is energized, the pulse change is not detected, that is, the planetary gear 7 is rotated in the Fw direction (the state in FIG. ), That is, until it hits in the Fw revolution. The rotation time of the motor 1 at this time is a time sufficient for the planetary gear 7 to make one revolution to X or X (here, "500 msec"). 1 is rotated unconditionally by Fw so that the tip 12c of the rotation stopping arm 12 is
It just abuts against the 0 vertical bend 10c. However, as described in the "moving operation" described later, there are cases where the planetary gear 7 cannot freely revolve without first performing the Rv revolution depending on conditions. The motor 1 is rotated Rv for a certain period of time to rotate the planetary gear 7
Is revolved Rv to the position of X (the state of FIG. 7A), and then revolved Fw to hit the planetary gear 7 in the region.

In this state, it can be considered that the planetary gear 7 is located in the area. After this state, the revolving position of the planetary gear 7 is determined while detecting the change in brightness with the pulse plate 14 and the photocoupler 17 as in the conventional case.

Therefore, in the latter half of the "initial position setting" operation, the plunger 16 is energized in the first half state, the motor 1 is rotated by Rv, and the pulse change is detected from the planetary gear 7 to the X region. While revolving. In the first half operation, the planetary gear 7 is located in the normal region, and in the second half operation, the planetary gear 7 moves from the normal state to the X region.
If it can revolve, "dark" to "bright", "bright" to "dark"
Should be detected four times each.

In this way, at the abutting position of the revolution of the planetary gear 7, the regulating member (the vertical bending portion 10c) is provided so that the planetary gear 7 does not mesh with any of the outputs 9a to 9d.
By setting this as a neutral point (neutral position) where the planetary gear 7 can revolve without revolving, even when the revolving position cannot be detected, especially when the revolving position cannot be detected, the motor 1 is rotated for a certain period of time. Neutral position (neutral position, especially the initial position 10d of the crown stopper 10), which can be rotated at the abutting position without engaging with the gears 9a to 9d and becomes the abutting position without inadvertently transmitting power. You can look for.

The effect of the "initial positioning" will be described below.

The planetary gear 7 is used for the "initial position setting" operation.
However, since it also includes an operation of confirming whether or not the orbit can be surely revolved to each area in the order of →→→→→→→→ X, the apparatus has a function of checking whether or not the present apparatus operates normally. That is, if the planetary gear 7 can make one revolution (Rv revolution here) as described above, four pulse changes from “bright” to “dark” and “dark” to “bright” as shown in FIG. 11 are detected. Therefore, if these four pulse changes are not detected, it means that the planetary gear 7 has not normally revolved, indicating that the mechanism of the power split device is defective.

In FIG. 19, from "pulse count" in step 10 to step 12, it is counted whether or not there are eight bright and dark pulse changes. Thus, the operation of the present apparatus can be checked.

As described above, in this device in which the revolution position of the planetary gear 7 is detected by the relative change amount of the pulse signal or the like,
When the orbital position of the planetary gear 7 is determined by the "initial position setting" operation, the motor 1 is unconditionally energized in one direction for a certain period of time, and after the abutting operation is performed, the motor 1 is energized in the reverse direction. Sometimes, by detecting whether a specified number of pulse signals have been output, the operation check of the present apparatus can be performed simultaneously.

In addition to the "initial position setting" operation at the start-up of the present apparatus (which also checks whether or not the planetary gear 7 can surely revolve into each area between X and-), the "initial position setting" Out operation. That is, although details will be described later with reference to FIGS. 17 and 19, drive signals 26a to 25d for feeding back their movements are supplied to mechanisms 25a to 25d (see FIG. 17) for transmitting power.
d (refer to FIG. 17). When the output gears 9a to 9d are transmitting power to the respective mechanisms 25a to 25d, the drive signals 26a to 26d are not received. Even in the case of a mistake in the selection of the division destination such as when the drive signals 26a to 26d come from the mechanisms 25a to 25d which do not need to transmit the power, it is possible to perform the selection again by performing the "initial position determination". it can.

The reason why the operation of “initial position determination” is necessary is that the orbital position of the planetary gear 7 is detected by the relative change amount due to the combination of the photocoupler 17 and the pulse plate 14 as described above. It is. This device has a planetary gear 7
If the mechanism which can detect the orbital position of an object at an absolute position is provided, the above-mentioned "initial position setting" operation is not required, but the device must be made more complicated and larger.

After the “initial position setting” operation,
Since the planetary gear 7 is surely located in the region X, specifically, in the region of the upright bent portion 10d of the crown stopper 10, the planetary gear 7 is detected therefrom by a combination of the photocoupler 17 and the pulse plate 14 while detecting the light / dark signal. If it is determined which of the output gears 9a to 9d is engaged with the output gear 7, a reliable dividing operation can be performed. Therefore, which output gear 9
In the present embodiment in which it is determined only by relative change of the light / dark signal whether or not meshing with a to 9d is performed, "initial position setting" is performed for each power splitting operation, and if a reliable power transmission destination selecting operation is performed, the power Although the reliability as a device is also improved, each time the power transmission destination is changed, "initial positioning" is performed, and since the operation itself is not an actual power transmission act but a switching operation, a series of operations is performed. The operation takes a very long time.

For this reason, in the case of an operation in which power does not continuously transmit to the output gears 9a to 9d, but an operation in which a certain amount of time does not matter, the "initial position setting" operation is performed as much as possible. Thus, the reliability of the device can be improved.

As described above, in an apparatus for performing position detection based only on the relative change amount, particularly in an apparatus in which the "initial position finding" operation is set, the "initial position finding" operation does not affect the entire control. In the operation part, the reliability of control of the entire apparatus can be improved by performing the “initial position determination” operation positively every time the power transmission destination is changed.

As an actual part to be used, "initial position determination" is performed at step 91 in the main operation (FIG. 18) of the camera described later. This means that "initial position determination" is performed immediately before the manual rewind operation. Since the manual rewind operation itself takes a certain amount of time, there is no problem even if a slight time is added here, so "initial position setting" is performed. In addition, in the auto loading (steps 141 and 147 in FIG. 25), "initial position determination" is performed immediately before this operation. This is also an operation requiring a certain amount of time as in the case of manual rewind. Therefore, this "initial position determination" is performed in order to improve the reliability of control of the entire apparatus described above.

The "initial position" operation of the camera provided with the apparatus of this embodiment will be described later with reference to FIG.

Next, as described in the above "Basic operation of the power split device", the tip 12c of the detent arm 12 is inserted into the notch of the crown stopper 10 by turning the plunger 16 on and off. The motor 1 and the plunger 16 also perform fine movements by the "bright" and "dark" signals of the pulse plate 14, which are pulled out (removed). Or help with the action of unplugging. The “missing operation” and “entry operation” will be described below.

First, the "missing operation" will be described.

On the crown stopper 10, there is a stopper 11 having a shape very similar to that of the crown stopper 10. This has a shape similar to that of the crown stopper 10, but the size of the angle of the notch is set so that Z>Y> X as described in FIG. This is a condition necessary for the “missing operation”.

FIG. 12A is a model diagram when the present embodiment is viewed from the L direction as shown in FIG. 3 and FIG. . Crown stopper 10, pull-out stopper 11, and rotation stopping arm 1
2 shows the relationship between the front end 12c and the trajectory of the movement when the front end 12c of the detent arm 12 engages with or is disengaged from the notch of the crown stopper 10 or the removal stopper 11. This broken line indicates the rotation stop
The signal when the photocoupler 17 detects the bright pattern 14e and the dark pattern 14d of the pulse plate 14 that rotates in conjunction with the rotation of the arm 12, the rotating arm 5, the planetary gear 7, and the like is also shown. The bold dashed line is the “bright” signal and the planetary gear 7 is
, And the thin dashed line indicates that the planetary gear 7 is in any of the regions X,. Also,
FIGS. 13 (a) and 13 (b) show the rotation direction of the motor 1, the timing of suction of the plunger 16 and the pattern of the pulse plate 14 when the photocoupler 17 detects the "moving operation". 12A and 12B are timing charts showing changes in the “bright” and “dark” signals, and correspond to FIGS.

FIG. 9 shows a state in which the planetary gear 7 is in the area and the power transmission of the "Fw" rotation of the output gear 9b is being performed (see FIG. 9B). At this time, the force for revolving the planetary gear 7 in the "Fw" direction is the rotation stopping arm 12
Is stopped by the notch (end face 10 a) of the crown stopper 10. In this state, the operation when the power transmission of the output gear 9b is stopped and the planetary gear 7 is revolved to another output gear (9a, 9c, or 9d) will be described. To remove the tip 12c of the rotation stopping arm 12 from the notch of the crown stopper 10. But,
Tip 12c of rotation stopping arm 12 and crown stopper 1
In some cases, the leading end 12c does not rise upward due to friction between the notch of 0 (end face 10a) and each end face. this is,
It is the same whether the rotation of the planetary gear 7 after the suction of the plunger 16 "Rv", that is, the rotation of the motor 1 "Fw" is continued or stopped.

In other words, if the “Rv” rotation of the planetary gear 7 continues, the tip 12 c of the rotation stopping arm 12 and the notch (end face 10 a) of the crown stopper 10 are always in a state of abutting. In addition, even if the rotation of the planetary gear 7, that is, the rotation of the motor 1 is stopped, tension is generated on the teeth and the tooth surface without backlash of the gear train. This is because the front end 12c of the horn 12 is biased toward the notch 10a of the crown stopper.

Therefore, after suction of the plunger 16, the motor 1 is once rotated in the reverse direction “Rv” to remove the tension generated on the teeth and tooth surfaces without backlash, and the tip 12 c of the rotation stopping arm 12 is removed. The friction between the notch (end face 10a) of the crown stopper 10 and the notch (end face 10a) of the crown stopper 10 must be removed, and when the friction has been eliminated, the crown stopper 10 must be removed from the notch (end face 10a). However, the frictional force varies greatly, and the strength of the torsion spring 13b for lifting the rotation stopping arm 12 is also generally determined by the spring balance of the attraction force of the arm torsion spring 15c and the plunger 16. Can not be set strongly. As a countermeasure, a stopper 11 is used. In other words, even if the protrusion 15e attached to the arm 15 is raised by the removal stopper 11, and the rotation stopping arm 12 is not pushed downward, the contact between the notch (the end face 10a) and the tip 12c is completely eliminated. Until the friction stops, the tip 12c of the rotation stopping arm 12 is pulled out and caught on the stopper 11 (FIG. 9).
(A) and FIGS. 10 (a) and 10 (b)).

The above operation will be described with reference to FIG.

As described above, FIG. 12 is a diagram viewed from the L direction in FIG. The planetary gear 7
It is necessary that the tip 12c of the detent arm be disengaged from the crown stopper 10 only after the revolution of the planetary gear starts in the Rv direction. It is necessary that the stopper 11 does not come off, and the stopper 11 comes out of its role.
In order to fulfill the role, the relationship of the angle (Z>Y> X) as described above is important. However, in FIG. 12, the angle is represented by the width in the horizontal direction.

In this apparatus, the tip 12c of the rotation-stop arm 12 has the crown stopper 10
There is no detection device that knows that it has deviated from 1, that is, that it has been lifted up. The “bright” and “dark” signals of the pulse plate 14 perform the role.

That is, in FIGS. 12 (a) and 13 (a), when the crown stopper 10 and the rotation stopping arm 12 are engaged with each other, for example, in FIG. 10, a "bright" signal is detected. However, after the plunger 16 is sucked, the motor 1 rotates at a certain interval after the suction of the plunger 16, and passes through the gap between the end surfaces 11a and 11b of the stopper 11 along the locus of the broken line in the drawing. If the arm 12 comes off, the rotating arm 5 starts to rotate "Rv", and as a result, a "dark" signal 201 indicated in the figure is detected, and the arm 5 comes off the crown stopper 10. Is indirectly known. After the signal, the motor 1 is rotated in the direction in which the planetary gear 7 revolves anew, that is, in the direction of the output gears 9a to 9d to which power must be transmitted next. However, for example, as shown in FIG. 12 (b), the rotation in the direction of removing the friction between the crown stopper 10 and the rotation stopping arm 17 (“Fw”), and the direction in which the planetary gear 7 revolves after the planetary gear 7 comes off from the stopper 11 If (Fw) is the same, the motor 1 is rotating in the same direction, so that it is not necessary to stop the motor 1 since a series of operations can be performed.

As shown in FIGS. 13 (a) and 13 (b), the motor 1 starts rotating after a certain time 207 after the suction of the plunger 16, but this time is too short. And depending on the length of the suction time of the plunger 16,
Since the planetary gear 7 starts revolving before the projection 15e of the arm 15 rises, the tip 12c of the rotation stop arm 12 is started.
From the notched end face 11a of the stopper 11 to the end face 11
In some cases, only the movement to “b” does not cause the crown stopper 10 to fall out. The time lag indicated by 207 of the suction and the rotation start takes into account the margin.

As described above, the "moving operation" from the end of power transmission to a certain output gear (here, 9b) to the start of switching of the planetary gear 7 to the next output gear 9a, 9c or 9d). It is description of.

By providing the removal stopper 11 in this manner, the spring balance of the device, the characteristics of the plunger 16, the crown stopper 10, the rotation stopping arm 12
It is not necessary to strictly control the amount of tension generated on the teeth and tooth surfaces in the absence of frictional changes and backlash due to the part shape of the parts, and it is possible to reliably perform the switching operation after power transmission Become.

Next, the revolution of the planetary gear 7 is stopped at the desired output gears 9a to 9d to start transmitting the power, that is, the rotation stopping arm 12 enters the notch of the crown stopper 10 and enters the notch. Will be described with reference to FIGS. 14 and 15. FIGS. 14 and 15 have the same relationship as FIGS. 12 and 13.

Although the pull-in stopper 11 itself is not necessary in the "entry operation", the crown stopper 10 is not required.
Even if it is above, it does not become an obstacle for the "entrance action".

For example, when trying to stop the planetary gear 7 in the area as shown in FIG. 9, the planetary gear 7 revolves in the Fw revolution from the direction of the area, and the suction of the plunger 16 is stopped. And rotation stop
FIGS. 14A and 14B show a state in which the revolution is stopped by the system 12 and the power is transmitted to the output gear 9b.
However, the difference between FIG. 14A and FIG. 14B is in which rotation the output gear 9b in the region is rotated.
FIG. 14A shows that the output gear 9b is set to Rv through the planetary gear 7.
At the time of trying to rotate, at this time the rotation stop
The tip 12c of the drum 12 is stopped by the notch (end face 10b) of the crown stopper 10. Conversely, FIG. 14B shows a case in which the output gear 9b is to be rotated Fw, and in this case, the output gear 9b is stopped by the notch (end face 10a). In this manner, there are two ways of entering the “entrance operation” as well as the “missing operation”. This is for the following reasons.

1) The direction of revolution of the planetary gear 7 and the direction of rotation of the output gears 9a to 9d to transmit power must be the same.

2) There is no device for directly detecting whether the tip 12c of the rotation stopping arm 12 has entered the notch of the crown stopper 10.

Hereinafter, this "entry operation" will be described with reference to FIGS. 14 (a) and 15 (a).

When the planetary gear 7 revolves around Fw in a state where the plunger 16 is sucked from the direction of the area, the area enters the area from the “dark” signal 203 in the area, and the “bright” signal 2
08. If the plunger 16 continues to be sucked as it is and the planetary gear 7 keeps revolving around Fw, the plunger 16 is also out of the area,
Is detected, a "dark" signal 202 indicating the area of. Upon receiving the signal, the motor 1 rotates Rv, that is, the R of the planetary gear 7
Start v revolution. Then, a "bright" signal 204 indicating that the user has entered the area is detected, and the suction of the plunger 16 is stopped by the signal. At this time,
The tip 12c of the rotation stop arm 12 is on the stopper 11 (the state shown in FIG. 8). At this time, the rotation stop arm 1
When the frictional force is larger than the revolving force of the planetary gear 7, the rotating arm 5 and the rotating arm 5 rotate. The rotation of the stop arm 12 and the like may also stop. Therefore, it is necessary to determine the timing at which the suction of the plunger 16 is stopped, in other words, the amount of opening of the angle of the bright pattern 14e of the pulse plate 14, that is, the width of the region of.

“The planetary gear 7 is located at the end of the region as shown in FIG.
Even if there is, it is always meshed with the output gear 9b, though it is not the regular meshing position or gear interval. If the above is done, if the planetary gear 7 is in the area, the planetary gear 7
Is not revolving force generated by the spring 8b, but "revolves" while "rotating" by meshing with the sun gear 6 and the output gear 9b. As a result, the planetary gear 7 revolves Rv irrespective of the friction caused by the contact between the rotation stopping arm 12 and the stopper 11. Then, the tip 12c of the rotation stopping arm 12 is securely pulled out and the notch of the stopper 11 (the end face 1) is removed.
1a, 11b), and is stopped by the notch (end face 10b) of the crown stopper 10. Then, the rotation of the planetary gear 7 in the Rv direction is stopped, and at the same time, only the rotation starts, so that the output gear 9b starts the RV rotation. As described above, the “revolution direction of the planetary gear 7 (FIG. 14A)
Rv revolution) and the desired rotation direction of the output gear 9 are the same, the revolution is stopped by the crown stopper 10 after the suction of the plunger 16 is stopped, and the output gears 9a to 9
It is sufficient that all the motors 1 rotate the same until d starts rotating. If the switching signal 204 from "dark" to "bright" is detected when moving from the area to the area, This means that "whether or not the tip 12c of the rotation stopping arm 12 has entered the notch of the crown stopper 10" has been indirectly but surely detected.

FIGS. 14 (b) and 15 (b) show the case where the revolving direction of the planetary gear 7 is the same as the rotating direction of the output gears 9a to 9d. Gear 9
The signal 204 moves in the same manner as after the state of the signal “dark” → “bright” of the signal 204 meaning that the signals a to 9b are engaged. The signal at that time is a signal 204 'in FIGS. 14 (b) and 15 (b).

The above is the description of the "entry operation".

As described above, in the "incoming operation", if the power transmission (rotation) direction of the split output gears 9a to 9d and the revolving direction of the planetary gear 7 are the same, the motor 1 It is not necessary to change the rotation direction of the transmission gears, so that the output gears 9a to 9d do not rotate in the reverse direction, and the mechanism at the transmission destination does not perform the reverse operation. Then, the division destination can be selected reliably.

FIG. 17 is a cross-sectional view of FIG.
5 schematically shows circuit blocks and mechanical main parts of a camera provided with the apparatus of the present embodiment described in FIG.

In the figure, reference numeral 21 denotes ON and O of the plunger 16.
Plunger drive circuit for performing FF, 22 is the photocoupler 1
7 is a pulse signal detection circuit for detecting an output pulse, and 23 is an on / off and Rv, Fw of the motor 1 shown in FIG.
And a motor drive circuit for controlling the rotation of the motor . These are controlled by a control circuit 24. Reference numerals 9a to 9d denote the aforementioned output gears, and these powers are supplied to each mechanism (lens barrel driving system and film feeding drive) by each gear train (omitted in the figure, shown by a thick line) and the like as described in FIG. System) 25a to 25d, and drive signals 26a to 26d thereof are fed back to the control circuit 24. 27 is the aforementioned arm 1
5, a planetary gear revolving lock mechanism such as a rotation stop arm 12, a crown stopper 10, and a removal stopper 11.

Next, before the operation of the control circuit 24 is described, some effects can be obtained by effectively using the present apparatus. This will be described.

<< Part 1 >> When the lens barrel 314 is retracted, that is, when the main switch is in the non-photographing state, if the helicoid gear 310 for retracting rotates carelessly, the lens barrel 314 may fly out. . Therefore, when the main switch is turned off, the planetary gear 7 is in the area of and is engaged with the output gear 9a. As a result, if the motor 1 does not rotate, the gear train 310a of the lens barrel control system does not run idle, and this is a measure to prevent the lens barrel from jumping out when the lens barrel is collapsed. However, as described in the above-mentioned “moving operation”, the rotation stopping arm 1
If it is not clear in which direction (Fw or Rv) of the notch of the crown stopper 10 the front end 12c of the second part 12c is stopped, it is difficult to determine whether the main switch is ON or not. Operation "does not work. For this reason, after the retracting operation is completed, it is necessary to adjust the retracting rotation so that the tension generated on the teeth and tooth surfaces is not released without backlash of gears etc. The lens barrel 314 must be completely abutted in the retracting direction.

As an operation performed when the main switch is turned off, there is "manual rewinding" of the film F. At this time, the planetary gear 7 meshes with the output gear 9d.
At this time, when the user waits again in the area at the end of the "manual rewind", in the case of the "entry operation", the planetary gear 7 must be stopped in the area in such a way as to collapse.

If the motor 1 is stopped while the planetary gear 7 is engaged with any one of the output gears 9a to 9d, the preceding gear train does not run idle and the mechanism to which the power is transmitted is locked. This has the effect of stopping unnecessary movement.

This procedure is also performed during normal photographing (when the main switch is ON). The planetary gear 7 is kept engaged with the output gear 9c connected to the zoom driving gear 312, and the zooming operation is performed. "Fw" of motor 1 as it is
Only the "Rw" rotation is performed, and when the film is wound after the release, the planetary gear 7 is engaged with the output gear 9d connected to the film feed drive system for the winding operation, and then the film is wound again. The gear 9c and the planetary gear 7 are engaged with each other. The reason why such an operation is necessary is that, when the main switch is turned on, each of the mechanical parts of the camera can be inadvertently touched by the lens barrel 314 in FIG.
This is because the zoom lens barrel 316 is moved by touching. In this state, the lens barrel 314 does not move because it is fixed by the bayonet ring 311.

These two states of gear locking are performed in the "retracting retracting operation" of FIG. 23 and the "zero position" flow of FIG. 30, which will be described later.

As described above, by keeping the planetary gear 7 engaged with the output gears 9a to 9d after the power transmission is completed, or by combining the planetary gear 7 with an arbitrary output gear, the mechanism to which the meshed output gear is coupled can be connected. Can be prevented from idling. Thus, the present device can be considered not only as a device for simply transmitting power but also as an operation lock device for various mechanisms.

<< Part 2 >> During normal shooting, one relay
After winding the film for each zoom, the planetary gear 7 is engaged with the output gear 9c.
Although the zoom gear 16 is not moved, the zooming operation is not performed in the continuous shooting mode. Therefore, during shooting, the planetary gear 7 is kept in mesh with the output gear 9d, and the motor 1 Rotation and stop are repeated.

By providing the normal control mode and the continuous power transmission mode as described above, in the continuous power transmission mode, the rotation and stop of the motor 1 are repeated only, and the plunger 16 and the photocoupler are operated. This eliminates the need for 17 extra movements, and omits the splitting operation only with the power transmission operation.

<< Part 3 >> In the present embodiment , the transmission destination is not arbitrarily selected in time series (sequential) by using a differential mechanism as in the conventional power transmission distribution mechanism, but the transmission destination is arbitrarily determined. Since the destination can be selected, a transmission destination selection error (division error) may occur. In the case of a division error, the control circuit 24 shown in FIG.
The situation is known from the drive signals 26a to 26d which are fed back.

As described above, when a division error occurs, “initial position determination” is performed, and a routine is provided so that an appropriate division destination can be selected again. It has the effect of treating.

However, if the planetary gear 7 does not move normally and engages with the erroneous output gears 9a to 9d even after performing the "initial position setting" several times, the camera is set to "inoperative".
"Prohibition mode" must be provided.

Next, the operation of the control circuit 24 shown in FIG. 17 will be described with reference to FIGS.

First, a series of schematic operations of the camera will be described with reference to a main flowchart of FIG. "Step 70" If the battery is replaced,
Since everything is reset, the planetary gear 7 can determine which region (X
Since it is not known whether the position is (?), An "initial position setting" operation (details will be described later with reference to FIG. 19) is performed. "Step 71" It is determined whether or not the main switch is ON. If the main switch is ON, the process proceeds to step 72, and if the main switch is OFF, the process proceeds to step 82. "Step 72" It is determined whether or not the lens barrel 314 is extended.
Then, if the lens barrel 314 has collapsed, the flow advances to step 79 for extending the lens barrel. "Step 73" It is determined whether the release switch is ON or OFF. If the release switch is ON, the flow proceeds to the exposure and winding operations from step 84 onward. If the release switch is OFF, the flow proceeds to step 74. [Steps 74 and 75] Determine whether the TELE switch or WIDE switch is ON or OFF.
Step 8 for performing “Ming” or “WIDE zooming” operation
Proceed to 0,81. If the TELE switch or the WIDE switch is OFF, the process proceeds to step 76. "Step 76" Manual rewind switch is O
It is determined whether it is N or OFF. If it is OFF, the process proceeds to step 77; "Step 77" It is determined whether or not the back cover is opened and closed, and if it is determined that the closing operation has been performed, since it is a normal film loading operation, the process proceeds to the auto loading operation in step 78, and so on. If not, step 71
Return to "Step 78" Here, an autoloading operation is performed (details will be described later with reference to FIG. 25). "Step 79" Here, a lens barrel extending operation is performed (details will be described later with reference to FIG. 23). [Step 80] Here, a tele zooming operation is performed (details will be described later with reference to FIG. 26). [Step 81] Here, a WIDE zooming operation is performed (details will be described later with reference to FIG. 27). [Step 82] In step 71, the main switch is turned on.
Since it is FF, it is determined here whether or not the lens barrel 314 is retracted. As a result, if the lens is not collapsed, the flow proceeds to the collapse operation of step 83. If the lens is already retracted, the normal main switch is in the OFF state, so that the previous step 76
Proceed to. "Step 83" Here, the lens barrel retracting operation is performed (details will be described later with reference to FIG. 24). "Steps 84 and 85" Normal "exposure", film F
Perform the "winding up" operation. The details of the "winding" operation will be described later with reference to FIG. "Step 86" It is determined whether or not the film F has been wound up and the film is in a stretched state.
Go to each. "Step 87" Continuous shooting mode switch ON or OFF
If it is OFF, the flow advances to step 89 because it is a one-frame photographing mode, and to step 88 if it is a continuous shooting mode. "Step 88" It is determined whether or not the release switch is kept ON. If the release switch is kept ON, the process returns to step 71 to continue continuous shooting, and the same photographing operation as described above is repeated. If the release switch is turned off, the continuous shooting is temporarily stopped there.
Go to 9. "Step 89" After the photographing operation such as photographing operation, zooming, manual re-widening, etc., when the camera is ON, the planetary gear 7 is engaged with the gear train 312 of the lens barrel drive system, and the zoom lens barrel is moved. Proceed to the "zero position" operation, which locks the movement of 316, as detailed in FIG. "Step 90" It is determined whether or not the release switch is OFF, and this step is continued until the release switch is turned OFF.

Next, the “initial position setting” operation will be described with reference to FIG. "Step 1" Steps 70 and 91 in FIG. 18 or Steps 141 and 147 in FIG.
Then, the operation jumps to the subroutine, and the "initial position setting" operation after step 2 is started. "Step 2" Plunger 16 via plunger drive circuit 21
Is turned on (driven). At this time, the rotation stopping arm 12 has not yet come off from the crown stopper 10 but has come off.
1 (the state of FIG. 10). "Step 3" In order to remove the tension generated on the teeth and the tooth surface without gear backlash and to remove the rotation stopping arm 12 from the stopper 11, the motor 1 immediately before the "initial position setting" is performed. (The details will be described later with reference to FIG. 20). "Steps 4-7"
The planetary gear 7 is revolved to the area shown in FIG.
2 at the bent portion 10 of the crown stopper 10.
c (state in FIG. 5).

In this step, the revolving position of the planetary gear 7 is not detected by the pulse plate 14.
The time sufficient for the planetary gear 7 to make one revolution from or to the area of X or from the area of X (here, "500 mse
c), the motor 1 is simply rotated unconditionally, and the tip 12c of the rotation-stop arm 12 abuts against the upright bent portion 10c of the crown stopper 10. As a result, the planetary gear 7 goes directly to the area, or once to the area X, and then to the next area depending on the direction in which the planetary gear 7 comes out. "Step 8" Since the planetary gear 7 is located in the area, "8" is assigned to the register n. However, here, the pulse is not positioned in the area where the pulse is counted. It is assumed that the motor 1 is rotated unconditionally and the planetary gear 7 will be positioned in the area. Only. If the planetary gear 7 is not actually located in the area, it is a rotation failure of the rotary arm 5 or the like and an operation failure of the power split device. "Step 9" The motor 1 is rotated by Rv to start revolving from the area to the area X (initial position 10d). "Step 10" In this step, a pulse change is detected. In other words, the revolution progresses from the area to the area X, and the value of the register n is set to "-1" every time there is a light-to-dark or dark-to-light pulse change. If “n = 0” and the planetary gear 7 has entered the region of X or if there has been no pulse change for a certain period of time, the process proceeds to step 11. Details of this operation will be described later with reference to FIG. "Step 11" Here, it is assumed that the tip 12c of the rotation stopping arm 12 has entered between the end face 10e of the crown stopper 10 and the upright bent portion 10c.
Stop driving. "Step 12" In this step, it is determined whether or not "initial position determination" has been normally performed. As a result, if the planetary gear 7 revolves from the normal region to the X region and the pulse changes, there are eight pulse changes. At this point, the value of the register n becomes "0". I have. However, if the revolution of the planetary gear 7 is prevented for some reason,
“N ≧ 1” (n ≠ 0). If “n = 0”, go to step 13; if “n ≠ 0”, go to step 14
Go to each. "Step 13" Since "initial position determination" has been normally performed, the planetary gear 7 is located in the area of X, specifically, the initial position 10d. Therefore, the area (position) P0 where the planetary gear 7 is located is set to “0”. "Step 14" Since the "initial position" was not normally performed, it is considered that the planetary gear 7 could not normally revolve, and the prohibition mode is entered. "Step 15" This subroutine is completed and this routine is completed.
Chin heritage.

Next, the "motor reverse energization" operation will be described with reference to FIG. "Step 20" In step 3 in FIG. 19 and step 39 in FIG. 22, jump to this subroutine,
The "motor reverse energization" operation after step 21 is started. "Steps 21, 22, 24" When the motor 1 is stopped or when the motor 1 is stopped, the direction of rotation is determined, and the motor is rotated in the direction opposite to the direction of rotation. Rotate 1 "Steps 23 and 25" The new rotation direction is stored as the current rotation direction. "Steps 26 and 27" This subroutine ends,
Perform this routine.

Next, the "pulse counting" operation will be described with reference to FIG. "Step 61" In step 10 of FIG. 19 and steps 41, 46, 50 and 54 of FIG.
The operation jumps to the chin, and the “pulse count” operation from step 62 is started. This subroutine is a flow for counting the amount of change in the pulse, and the counting timing is counted by one for either “bright → dark” or “dark → bright”.
In the initial setting, a change amount “n” of the pulse from the current state until the planetary gear 7 revolves is determined. [Step 62] When the revolution of the planetary gear 7 stops, for example, when the planetary gear 7 is in the X or region and the Fw or Rv revolution is stopped as shown in FIG. 5 or FIG.
In order to determine whether or not the change in the pulse does not change for a certain period of time, for example, when the revolution stops due to some kind of trouble, the timer is reset and the timer is started every time the pulse changes. "Step 63" The change of the pulse from "bright to dark" or "dark to bright" is detected. If there is no change, go to step 64,
If there is a change, go to step 65. [Step 64] If there is no pulse change, it is determined whether or not a predetermined time has elapsed. If not, the process returns to step 62 and waits for a change. If yes, step 67
Proceed to. "Steps 65 and 66" Since there is a pulse change, the value of the register n indicating the amount of change is reduced by "1". as a result,
If “n = 0”, it is determined that the revolving of the necessary amount of the planetary gears 7 has been completed, and the process proceeds to step 67. "Step 67" This subroutine is completed, and this routine is completed.
Chin heritage.

Next, the “power split” operation will be described with reference to FIG. 22. Before that, the symbols and the like used in this description and the like will be described with reference to FIG.

As shown in FIG. 31, P0 is the position where the planetary gear 7 is currently located, P1 is the position to go from now, M0 is the rotation direction of the past motor 1, and M1 is to go from now. The motor rotation direction of the load at the position, M2 is the direction in which the rotating arm 5 is moved. The relationship between the driving operation, the dividing position, and the rotation direction of the motor 1 is as shown in the figure. "Step 30" Step 1 in FIG.
02, 108, steps 125, 128 in FIG. 24, etc., jump to this subroutine.
The “power split” operation after 1 is started. At the time of this operation start, there are inputs of the positions P1 of the output gears 9a to 9d to which power is to be transmitted and the rotation direction M1 thereof. However, the output gears 9a, 9b, 9c, 9d correspond to the positions of. "Step 31, Step 31 '" It is determined whether the position (P0) of the output gear meshing with the planetary gear 7 is the same as the position (P1) of the desired output gear, and the same (P0 = P1).
If so, the motor 1 is rotated M1 as it is. Otherwise, go to step 32. “Step 32” In which direction the planetary gear 7 should revolve, that is, “P
1> P0 ", and if"P1> P0 ", the process proceeds to step 35, and if not, to step 33. "Steps 33 to 36" The rotation direction M2 of the rotating arm 5 (that is, the revolving direction of the planetary gear 7) is set to "Rv" or "Fw". Then, it calculates how many pulses of the pulse change are present in the desired output gears 9a to 9d ("P1-P
0 "), and stores this value in the register N.

Now, the operation of “missing” is started. "Step 37" The plunger 16 is turned on. With the plunger 16 kept ON, the rotation stopper arm 12 is stopped by the "eave" portion of the stopper 11. "Step 38" It is determined whether or not "M2 = M0" as to whether the rotation direction M2 of the rotation arm 5 is the same as the abutting direction of the rotation stop arm 12 against the crown stopper 10. As a result, if it is the same, it is necessary to remove the tension generated on the teeth and the tooth surface without backlash, and then remove the teeth in the reverse direction as described above.
Proceed to 39 . "Steps 39 to 42" The motor 1 is rotated in a direction opposite to the rotation direction immediately before entering the "moving operation", and a pulse change (bright) indicating that the rotation stopping arm 12 has come off the coming-off stopper 11 is turned on. → dark) is detected (201 in FIGS. 12A and 13A). If not detected, the process proceeds to a prohibition mode of step 59. "Step 4
3) Since a change in the pulse of “bright → dark” has been detected once since the signal has escaped in the direction opposite to the desired direction M2, the change in the pulse to the desired output gears 9a to 9d is increased by one time. ("N + 1"). [Step 44] The revolution of the planetary gear 7 is started to the desired output gears 9a to 9d.

At this stage, the "missing operation" ends. "Steps 45 to 47" The planetary gear 7 is revolved to the dark pulse portion just before the bright pulse of the desired output gears 9a to 9d. If the revolution does not go well and there is no pulse change for a certain period of time, the process proceeds to step 59.

[0117] Now, the "entering operation" is started. "Step 48" Even if this flow ends, the motor 1
Is rotated as it is, power is transmitted in the direction of rotation. It is determined by "M1 = M2" whether or not the direction M2 in which the rotating arm 5 is rotating (the revolving direction of the planetary gear 7) is the same as the rotating direction of the motor 1 during power transmission. Proceed to step 56; if not, step 4
Go to 9. "Steps 49 to 51" Desired output gears 9a to 9d
Is the first part of the flow in which the transmission starts after the planetary gear 7 has passed once and made a U-turn, and the desired output gears 9a to 9a
From the bright signal meshing with 9d, a dark signal (2 in FIG. 14A and FIG.
02) is detected. If not detected, the process proceeds to step 59, and if not detected, the process proceeds to step 52. "Steps 52-55" U-turn is started. The motor 1 is rotated in the power transmission direction. Thus, a “dark → bright” signal (2 in FIGS. 14A and 15A) indicating that the desired output gears 9a to 9d and the planetary gear 7 have meshed.
04 and 204 ′ in FIGS. 14 (b) and 15 (b) are detected. If not detected, step 59
The process proceeds to step 56 if not detected. "Step 56" The plunger 16 is turned off. Thus, as described with reference to FIG. 8, the tip 12c of the rotation stopping arm 12 slides on the stopper 11 and enters the notch of the crown stopper 10, so that the revolution of the planetary gear 7 is stopped. And power transmission starts.

At this stage, the "entry operation" ends. "Step 57" The current position P0 of the planetary gear 7 and the rotational direction M0 of the motor 1 are stored. "Step 58" This subroutine is completed and the main routine is terminated.
Chin heritage. "Step 59" Here, the plunger 16 and the motor 1 are turned off. "Step 60" The prohibition mode for setting the camera to "inactive"
Set the password.

Next, the "lens barrel extension" operation will be described with reference to FIG.
This will be described with reference to FIG. "Step 100" In step 79 of FIG.
The process jumps to the subroutine, and the "lens tube extension" operation from step 101 is started. "Steps 101 and 102" The direction in which the helicoid gear 310 is rotated to extend the lens barrel 314 (P1 = 7, M1
= Fw), the planetary gear 7 revolves and meshes with the output gear 9a to transmit power via the gear train 310a. "Step 103" The motor 1 is rotated until the lens barrel extension is completed.
Proceed to 4. "Steps 104-106" Bayonet Ring 311
Is rotated in the locking direction (P1 = 5, M1 = R
v) Designate and rotate the motor 1 from the output gear 9b through the gear train 311a until the bayonet ring 311 fixes the lens barrel 314. “Steps 107 to 110” The zoom gear 312 is rotated, and the zoom lens barrel 316 is turned on via the cam ring 315.
Extend to the DE end. "Step 111" This subroutine is terminated, and the routine is returned to this routine.

Next, the "lens barrel retracting" operation will be described with reference to FIG.
This will be described with reference to FIG. "Step 120" In step 83 of FIG.
The process jumps to the subroutine, and the "lens barrel retracting" operation from step 121 is started. “Steps 121 to 123” “P1 = 3, M1 = R
"v" is specified, the planetary gear 7 revolves, meshes with the output gear 9c, and the zoom gear 312 is rotated to put the zoom lens barrel 316 into the lens barrel 314 via the cam ring 315. “Steps 124 to 126” “P1 = 5, M1 = F
By specifying "w", the planetary gear 7 revolves, meshes with the output gear 9b, and rotates the bayonet ring 311 to unlock the lens barrel 314. “Steps 127 to 129” “P1 = 7, M1 = R
v ", the planetary gear 7 revolves, meshes with the output gear 9a, and rotates the helicoid gear 310 to rotate the lens barrel 3
14 is retracted. [Step 130] The motor 1 is turned off while the backlash in the lens barrel retracting direction remains on the gear train 310a. Thus, the lens barrel 314 does not accidentally pop out. "Step 131" This subroutine is terminated, and the routine is returned to this routine.

Next, the "auto loading" operation will be described with reference to FIG. "Step 140" In step 78 of FIG.
It jumps to this subroutine and starts the "auto loading" operation after step 141. [Step 141] The above-mentioned operation of "initial position setting" is performed to bring the planetary gear 7 to the initial position. “Steps 142 and 143” “P1 = 1, M1 = R
"v" is specified, the planetary gear 7 revolves, meshes with the output gear 9d, and power is transmitted by rotating the planetary gear 7 so as to rotate the output gear 9d in the winding direction. As a result, the film feeding planetary gear 304 constituting a normal planetary gear mechanism rotates with the film feeding planetary arm 309,
The spool 305 is rotated by meshing with a winding gear (not shown). Thus, winding of the film F from the film cartridge 313 is started. "Steps 144 to 146" A normal auto loading operation is performed. "Steps 147 and 149" This is a flow when the auto loading is not successful. The "initial position setting" operation is performed, and the film F is normally re-inserted. Proceed to step. "Step 148" A "zero position" operation is performed for gear locking in a flow that is passed upon completion of auto loading (details will be described later with reference to FIG. 30). "Step 150" This subroutine is terminated, and return is made to this routine.

Next, the "TELE zooming" operation will be described with reference to FIG. "Step 180" In step 80 of FIG.
It jumps to this subroutine and starts the "TELE zooming" operation from step 181 on. “Steps 181 and 182” “P1 = 3, M1 = F
w ", the planetary gear 7 revolves, meshes with the output gear 9c, and power is transmitted from the output gear 9c to
LE rotation. "Steps 183 to 185" A normal TELE operation is performed via the gear train 312a and the zoom drive gear 312. "Step 186" This subroutine is terminated, and return is made to this routine.

Next, the "WIDE zooming" operation will be described with reference to FIG. "Step 190" In step 81 of FIG.
It jumps to this subroutine, and starts the "WIDE zooming" operation after step 191. "Steps 191 and 192""P1 = 3, M1 = R
v), the planetary gear 7 revolves, meshes with the output gear 9c, and power is transmitted from this output gear 9c to
DE rotation. "Steps 193 to 195" Similar to "TELE zooming", a normal WIDE operation is performed via the gear train 312a and the zoom drive gear 312. "Step 196" This subroutine is terminated, and the routine is returned to this routine.

Next, the "winding" operation will be described with reference to FIG. "Step 160" In step 85 of FIG.
Jumping to this subroutine, the "winding" operation of the film F is started. "Steps 161 and 162" Similarly to auto loading, the planetary gear 7 is revolved by designating "P1 = 1, M1 = Rv" and meshed with the output gear 9d.
The spool 305 is rotated through the gears d and the film feeding gears 304 and 308. "Steps 163 to 165" A normal film F winding operation is performed. "Step 166" This subroutine is terminated, and the routine is returned to this routine.

Next, the "rewind" operation will be described with reference to FIG. "Step 170" In step 92 of FIG.
The process jumps to the subroutine, and the "rewind" operation of the film F from step 171 onward is started. "Steps 171 and 172" The revolving position of the planetary gear 7 is "P1 = 1" as in the winding, so the output gear 9d
However, since the rotation direction is “M1 = Fw”, the output gear 9d also rotates Fw. Therefore, the film feeding planetary gear 304 rotates the film feeding winding gear 308, and then rotates a fork gear (not shown). "Steps 173 to 175" A normal film F rewinding operation is performed. "Step 176" The "zero position" operation described later is performed. "Step 177" This subroutine is terminated, and return is made to this routine.

Next, the "zero position" operation will be described with reference to FIG. "Step 200" In step 89 in FIG. 18, step 148 in FIG. 25, and step 176 in FIG. 29, the operation jumps to this subroutine, and the "zero position" operation after step 201 is started. Note that this "zero position"
As described above, the planetary gear 7 is engaged with the output gear 9c for zooming when the main switch is ON, and the output gear 9a when the main switch is OFF. This is for preventing the lens barrel 316 and the lens barrel 314 from accidentally moving. "Step 201" Is the lens barrel retraction switch ON or OF?
F is determined, and if ON, the main switch is determined to be in an OFF state, to step 204; if OFF, the main switch is determined to be in an ON state, to step 202;
Go forward respectively. "Steps 202 and 203""P1 = 3, M1 = F
"w" is specified to revolve the planetary gear 7, and the output gear 9c connected to the zoom mechanism meshes with the planetary gear 7. This makes it possible to immediately perform the zooming operation in the next photographing. This operation also acts as a lock function of the zoom lens barrel 316, so that the zoom
Even if the lens barrel 316 is inadvertently pushed, there is no problem. The transition from step 201 to this step is only when jumping to the subroutine from step 89 in FIG. "Steps 204 to 206" Planetary gear 7 and output gear 9
The retracting operation is slightly performed in a state in which a is engaged. Actually, the lens barrel 314 does not move because it is collapsed, but it is possible to reliably lock the lens barrel 314 by making the gear train 310a and the helicoid gear 310 stick (to have backlash) to some extent. .
The transition from step 201 to this step is performed at step 148 in FIG. 25 or step 1 in FIG.
Only when jumping from 76 to the subroutine. "Step 207" The motor 1 is turned off. As a result, the zoom lens barrel 316 or the lens barrel 314 does not move unless the motor 1 rotates as described above. [Step 208] This subroutine is terminated, and the routine is returned to the present routine.

According to the present embodiment, when the film winding operation is completed, it is determined whether the current photographing mode is the normal photographing mode or the continuous photographing mode. The planetary gear 7 is switched from the currently engaged output gear 9d to the output gear 9c (zoom barrel 316) (steps 87 → 89 in FIG. 18 (specifically, steps 200 → 20 in FIG. 30).
1 → 202 → 203 → 207). this is,
That there is a high probability that power will be transmitted first during the next shot (taking into account the quick shooting of the next shot)
To prevent the zoom lens barrel 316 from moving even if the zoom lens barrel 316 is inadvertently pushed (because the lock function works by keeping the planetary gear 7 and the output gear 9c in a meshing state). It is.

On the other hand, in the continuous photographing mode, at the time of the next photographing, the first power transmission destination is again the film feeding mechanism via the output gear 9d. It is kept engaged with the gear 9c. As a result, unnecessary movement of the plunger 16 and the pulse plate 14 is omitted, and only the control of repetition of rotation and stop of the motor 1 is performed, thereby enabling effective power split control.

(Correspondence between Invention and Embodiment) In the above embodiment, the sun gear 6 is used as the first rotating portion of the present invention,
The gear 7 is provided with output gears 9a to 9d in the second rotating portion of the present invention.
Are provided with an arm 15 and a detent arm
And the crown stopper 10 is the restricting means of the present invention.
Next, the pulse plate 14, the photocoupler 17 and the step shown in FIG.
The control circuit 24 that executes steps 45 to 47 determines
The control circuit 24 executing steps 85 to 89 in FIG. 18 corresponds to the control means of the present invention .

As described above, according to the present invention, it is possible to provide a camera power transmission device and a camera capable of performing power transmission effective for quick shooting when the continuous shooting mode is selected. It is.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a power split device for a camera, showing one embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of a power split device for a camera, showing one embodiment of the present invention.

FIG. 3 is a plan view of a power split device for a camera showing one embodiment of the present invention.

FIG. 4 shows a crown stopper according to an embodiment of the present invention;
It is a partial enlarged view explaining the shape of a coming-off stopper and a rotation stopping arm.

FIG. 5 is a view showing a plane and a longitudinal section in a state where a planetary gear is located in a region in one embodiment of the present invention.

FIG. 6 is a diagram showing a plane and a longitudinal section in a state when the planetary gear is switched to a blank region in one embodiment of the present invention.

FIG. 7 is a view showing a plane and a longitudinal section in a state where a planetary gear is located in a region X in one embodiment of the present invention.

FIG. 8 is a diagram showing a plane and a vertical section in a state immediately before a planetary gear enters a region in one embodiment of the present invention.

FIG. 9 is a view showing a plane and a longitudinal section in a state where a planetary gear is located in a region according to an embodiment of the present invention.

FIG. 10 is a diagram showing a plane and a vertical cross section in a state immediately before the planetary gear comes out of a certain region in one embodiment of the present invention.

FIG. 11 is a diagram illustrating a pulse waveform serving as a position signal of a planetary gear in one embodiment of the present invention.

FIG. 12 is a diagram to help explain “missing operation” in one embodiment of the present invention.

FIG. 13 is a timing chart during the operation of FIG. 12;

FIG. 14 is a diagram to help explain the “entry operation” in one embodiment of the present invention.

FIG. 15 is a timing chart during the operation of FIG. 14;

FIG. 16 is a cross-sectional view showing a schematic mechanical configuration of a camera according to an embodiment of the present invention.

FIG. 17 is a circuit block diagram illustrating a main configuration of a camera according to an embodiment of the present invention.

FIG. 18 is a flowchart showing a main operation of the control circuit 24 of FIG.

FIG. 19 is a flowchart showing an "initial position determination" operation of the control circuit 24 of FIG.

FIG. 20 is a flowchart showing the “motor reverse direction energization” operation of the control circuit 24 of FIG. 17;

21 is a diagram illustrating the “pulse count” of the control circuit 24 in FIG.
This is a flowchart showing the operation.

FIG. 22 is a flowchart showing the “power split” operation of the control circuit 24 of FIG. 17;

FIG. 23 is a flowchart showing the "collapse delivery" operation of the control circuit 24 of FIG.

FIG. 24 is a flowchart showing the “collapse retracting” operation of the control circuit 24 of FIG. 17;

FIG. 25 is a flowchart showing the "auto loading" operation of the control circuit 24 of FIG.

26 is a diagram showing "TELE zooming" of the control circuit 24 in FIG.
This is a flowchart showing the operation.

FIG. 27: “WIDE zooming” of the control circuit 24 in FIG. 17
This is a flowchart showing the operation.

FIG. 28 is a flowchart showing the “winding-up” operation of the control circuit 24 of FIG. 17;

FIG. 29 is a flowchart showing a “rewind” operation of the control circuit 24 of FIG. 17;

FIG. 30 is a flowchart showing the “zero position” operation of the control circuit 24 of FIG. 17;

FIG. 31 is a diagram showing the relationship among signs, driving operations, division positions, and motor directions used in describing various operations of the control circuit 24 in FIG. 17;

[Description of sign]

 Reference Signs List 1 motor 5 rotating arm 6 sun gear 7 planetary gear 9a to 9d output gear 12 rotation stopping arm 14 pulse plate 15 arm 16 plunger 24 control circuit

Claims (2)

(57) [Claims] A first rotation for transmitting a driving force by rotation.
Part and the rotation and the second part in conjunction with the rotation of the first rotating part.
A second rotating part that revolves around the first rotating part;
The rotating portion of the orbit revolves selectively to selectively engage with the
Actuation for feeding in which driving force from one rotating part is transmitted
A plurality of operating systems including a system and a revolution of the second rotating unit.
Regulating means for controlling the rotation of the second rotating portion
Determination means for determining the position, and according to the determination of the determination means
The second rotating part engages with the working system for feeding
Regulating the revolution of the second rotating part by reaching the position
Controlling the restricting means so that the second
The first rotation is provided to the working system for feeding by the rotating unit.
After transmitting the driving force of the unit to perform the feeding operation, continuous shooting
When the mode is not the mode, it is common to deactivate the regulating means.
When the continuous shooting mode is set, the restriction means is activated.
A power transmission device for a camera, comprising: a control unit for causing the power to be transmitted. 2. A first rotation for transmitting a driving force by rotation.
Part and the rotation and the second part in conjunction with the rotation of the first rotating part.
A second rotating part that revolves around the first rotating part;
The rotating portion of the orbit revolves selectively to selectively engage with the
Actuation for feeding in which driving force from one rotating part is transmitted
A plurality of operating systems including a system and a revolution of the second rotating unit.
Regulating means for controlling the rotation of the second rotating portion
Determination means for determining the position, and according to the determination of the determination means
The second rotating part engages with the working system for feeding
Regulating the revolution of the second rotating part by reaching the position
Controlling the restricting means so that the second
The first rotation is provided to the working system for feeding by the rotating unit.
After transmitting the driving force of the unit to perform the feeding operation, continuous shooting
When the mode is not the mode, it is common to deactivate the regulating means.
When the continuous shooting mode is set, the restriction means is activated.
A camera, comprising: a control unit for causing the camera to perform the control .