JP3372303B2 - Camera driving force transmission mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving force transmitting device for a camera.
Structure, more specifically, with a single rotary drive sourceTwo driven machines
(For example, film winding and rewinding mechanisms and
Switching of driving force to the lens barrel moving mechanism)Do camera
And a driving force transmission mechanism. [0002] 2. Description of the Related Art Film winding with a single rotary drive source
And rewindWhenDriving force of camera to move lens barrel
Conventionally, various transmission mechanisms have been proposed. An example of such a driving force transmission mechanism for a camera
For example, in Japanese Patent Application No. 4-060548,
Driven by one-way rotation of sun gear with gear switching mechanism
Select a gear and rotate the driven gear by rotating in the other direction.
What is driven is described. Further, Japanese Patent Application Laid-Open No. 61-172127 discloses
Uses electromagnetic locking means in the planetary gear switching mechanism.
Locks the planetary gear's revolution,
One that transmits rotational driving force in a direction is disclosed. [0005] Problems to be Solved by the Invention Japanese Patent Application No. 4-060 mentioned above.
No. 548 describes a gear driven by a sun gear.
When driving the gear, it can transmit rotation in only one direction
It is not possible to drive one gear system forward and reverse
Can not. Improve this and transmit forward and reverse rotation to two places
If you attempt to do so, the gears that mesh with the planetary gears
4 are required, which is disadvantageous for downsizing. Further, Japanese Patent Application Laid-Open No. Sho 61-172127 discloses the above.
The ones mentioned in the report are electromagnetically used to lock the sun gear.
The problem that the locking means is required and the cost is high
There are points. The present invention has been made in view of such a problem.
And using a single rotary drive sourceTwo driven mechanisms
(For example, film winding and rewinding mechanisms and lens
Drive mechanism of the lens barrel), the rotational drive force in both the forward and reverse directions
Transmission switchingDriving power transmission of inexpensive and compact camera
The purpose is to provide a delivery mechanism. [0008] Means for Solving the Problems To achieve the above object,
The driving force transmission mechanism of the camera according to the present invention
A single rotatable rotary drive source,First driven gear mechanism
When,A second driven gear mechanism and,Sun gear and sun gear
With a planetary gear supported so that it can revolve around the gear
The first driven gear mechanism and the second driven gear
Gear mechanismThe driving force of the rotary drive source
Planetary gear for selective transmissionSwitchingMechanism andAbove play
The star gear switching mechanism moves on the orbit of the planetary gear.
The planetary gear is provided so that it can enter and retract
The planetary gear is controlled by the first driven
The gear is held in mesh with the gear mechanism, and the
A first locking member for releasing the rotation restriction of the star gear;,the above
On the orbit of the planetary gear of the planetary gear switching mechanism
The planet gears are provided so that they can enter and retreat freely.
The planetary gears are controlled by the second driven
By holding in the engaged state with the dynamic gear mechanism and retracting,
A second locking member for releasing the revolution restriction of the planetary gear;,Up
The first driven gear driven by the driving source
The first locking portion is mechanically linked to the displacement of the mechanism itself.
First locking / release switching machine that enables locking / release switching of material
Structure,The second driven body driven by the drive source
Mechanically linked to the displacement of the dynamic gear mechanism itself, the second
Locking / unlocking that allows the locking member to be switched between locking and releasing.
Switching mechanism,The first driven gear mechanism and the second driven gear mechanism
And selectively drives the driven gear mechanism of
And lock / release switching movement by the second lock / release switching mechanism
Control means for controlling the driving source so as to perform the operation.
Is provided. [0009] [Operation]In the above configuration, the control unit may
The first driven member is controlled by the forward / reverse switching drive control of the drive source.
Select between the driving gear mechanism and the second driven gear mechanism
Transmitting the driving force of the driving source to the first driven gear;
Gear mechanism and the second driven gear mechanism in both forward and reverse directions.
Is driven to rotate. [0010] Embodiments of the present invention will be described below with reference to the drawings.
I do. FIG.OrFIG. 22 shows an embodiment of the present invention.
It is. FIG. 1 shows a differential tooth of a camera according to this embodiment.
FIG. 3 is a perspective view showing the vehicle mechanism disassembled along the output shaft direction.
is there. The motor 1 as a rotary drive source can be driven forward and reverse.
The sun gear 2 is provided on the motor shaft 1a.
It is fixed to rotate integrally. The sun gear 2 is a small-diameter thick gear.
Part 2a and a large-diameter, thin-walled disk part 2b are provided coaxially,
The disk 2b has a diameter for performing pulse counting.
Holes 2c, which are slightly elongated in the
Several are drilled. Insert the hole 2c of the disc 2b from both sides
Insert the U-shaped photointerrupter
3 are provided. The gear 2a of the sun gear 2 has
Three planetary gears 5a, 5b, 5
c are engaged with each other, and further, these planetary gears 5a, 5
b and 5c are cylindrical shapes fixed to a camera body (not shown).
And meshed with the internal gear 4. The planetary gears 5a, 5b, 5c are intermediate
Rotable to three equally spaced positions in the circumferential direction of the disk 6b of the gear 6
Attached to. This intermediate gear 6 has a small diameter
Coaxial between the thick gear part 6a and the large diameter thin disk part 6b
It is provided in. Around the gear portion 6a of the intermediate gear 6,
Are three planetary gears 7a, 7 at three equally spaced positions in the circumferential direction.
b, 7c are engaged with each other, and these planetary gears 7a, 7c
b, 7c are further meshed with the internal gear 4 described above.
You. The above-mentioned planetary gears 7a, 7b, 7c
It is rotatably mounted on the gear 8 at three equally circumferential positions.
Have been. The output gear 8 has a large-diameter, thin-walled disk portion 8.
b, the small-diameter gear portion 8a is connected to the spacer 8c (see FIG. 2).
) And coaxially protruding through the same. FIG. 2 shows a part of the planetary gear switching mechanism.
FIG. 3 is an exploded perspective view. The gear of the output gear 8
The planetary gear 9 meshes with the gear portion 8a. This planet
The gear 9 has a shaft hole 9b formed in the center of the gear portion 9a.
The shaft portion 11b of the support shaft 11 is rotatably inserted.
Have been. The shaft 11b of the support shaft 11 has the planet
A friction washer 12 is further inserted across the gear 9.
Has been passed. Further from the shaft portion 11b of the support shaft 11,
The protruding portion 11c is coaxial with the rotation shaft of the output gear 8.
Hole 10 of gear arm 10 rotatably supported
a. The friction washer 12 includes a spring washer.
And is slightly curved.
You. As a result, the planetary gear 9 is
With a small force toward the flange 11a of the support shaft 11 from the
Pressed. The gear arm 10 is located in the shaft hole 10f.
With the center as the rotation axis, the output gear 8Be coaxial with the rotation axis
Body not shownIs rotatably supported by the
The rotatable range is indicated by the engagement portion 10d of the gear arm 10.
Gear arms integrated with camera body not shown
From a position where the gear comes into contact with the contact portion 13a of the topper 13, the gear
-The other engaging portion 10e of the arm 10 is
Up to the position where it comes into contact with the other contact portion 13b of the pa 13
I have. The gear arm 10 is provided with the shaft hole 10f.
A rewind locking portion 10b protrudes from the vicinity in the rotation axis direction.
In addition, a substantially L-shaped second
When the rewinding lock lever 14 serving as the lock release means is
Rotatably supported by a rewinding lock shaft 15 fixed to the
Have been. The gear arm 10 is provided with the shaft hole 10f.
Extends in the direction of the rotation axis from the opposite side of the nearby rewinding lock 10b
The locking portion 10c is provided in a protruding manner. The rewinding lock shaft 15 hasTorsionSpring
The rewind release spring 16 is attached to the
One end 16a of the release spring 16 is a spring of the rewind locking lever 14.
The other end 16b is hooked on a hook (not shown).
It is hung on a boss 18 fixed to the camera body. to this
As a result, the rewind locking lever 14 is urged in the CW direction in the drawing.
I have. The end portion 14c of the rewind lock lever 14 is
The gear arm 10 engages with the rewinding locking portion 10b.
Swelling. The rewind locking lever 14 is not shown.
By two bosses 17 and 18 fixed to the camera body,
The rotation range is regulated. The film end detecting lever 20 is a camera
It is rotatably attached to the main body by the attachment hole 20c.
And its tip 20aBut, A drive shaft 22 described later
To the film end cams 22b and 22c (see FIG. 10).
PatchK. The other end of the film end detection lever 20
The portion 20d is bent into a U-shape avoiding the string guide shaft 21
After that, it becomes the terminal part, and a hole 20b is drilled in this terminal part
Thus, one end of the string-shaped member 19 is fixed. This string
The other end of the member 19 is provided with the hole 1 of the above-described rewind lock lever 14.
4b is fixed. The extension locking portion 10c of the gear arm 10
On the side, a feeding locking lever 23 as first locking releasing means is provided.
It is turned around the extension locking shaft 24 fixed to the camera body (not shown).
It is movably supported. The extension locking lever 23 is
It has three arms 23a, 23b, 23c.
The arm 23a is provided with a spring hook 23d at the side end.
In both cases, a string attachment hole 23e is drilled at the end. Ma
The end 23f of the arm 23b is connected to the upper gear arm 10
RepetitionIt is designed to engage with the locking / unlocking portion 10c. The extension locking shaft 24 has an extension locking spring 27.
And one end 27a thereof is provided with a feeding lock lever.
23 is hooked on a spring hook 23d, and the other end 27b is a camera.
Hanging on the boss 25 fixed to the main body,
The locking lever 23 is always urged in the CW direction in the figure.
You. The extension lock lever 23 is fixed to the camera body.
The rotation range is restricted by the bosses 25 and 26
Have been. A switching lever shaft is provided on a part 28 of the camera body.
29 is fixed by the small diameter portion 29b.
The switching lever 30 is rotatable and cut on the small diameter portion 29b.
The switching lever 30 may be raised with respect to the replacement lever shaft 29.
It is inserted slightly loosely so that it can fit. The switching lever 30 and a part of the camera body
28, the switching lever shaft 29WindingSwitching lever
-A spring 31 is provided, and the switching lever 30 is always turned off.
It is pressed against the flange portion 29a of the exchange lever shaft 29. This
The switching lever 30 of FIG.
Usually, it rotates on a plane perpendicular to the axis of the switching lever shaft 29. A hole 30b is formed in one arm of the switching lever 30.
Is pierced and the string 32 enters here and is fixed
You. The string 32 is a string guide shaft fixed to the camera body.
While being guided by the center portion of 21, the other end is extended as described above.
The lever 23 is fixed in the string mounting hole 23 e of the lever 23. ThisSwitching lever30 is integrated with the camera body
The boss 48, which is a stopper protruding from the
The direction of rotation is regulated. Other arm of the switching lever 30
The tip 30a is connected to a switching cam portion 33 of a rotary cylinder 33 described later.
b, 33c. FIG. 3 is an exploded view of the lens barrel.
It is a perspective view. The rotating barrel 33 is attached to a camera body (not shown).
It is rotatably mounted and has a female helicopter on its inner peripheral surface.
Coid 33d is engraved. On the other hand, a rectilinear barrel 34 as a lens barrel
The female helicoid 33d of the rotating cylinder 33
A male helicoid 34a meshing with is formed. A face gear is provided outside the rotary cylinder 33.
33a are integrally formed. This face gear 3
In order to drive the switching lever 30 at the end of 3a,
Of the switching cams 33b and 33c are provided.
You. The pinion gear 35 rotates around the camera body.
Face gear of the rotating cylinder 33
33a. This pinion gear
-35, the planetary gear 9 is an idle gear 46 (FIG.
2) and driven through a gear train (not shown).
It is supposed to be. The outer periphery 33j of the rotary cylinder 33 has two
Switch cam recesses 33i, 33h are provided,
Turn on / off switches A and B described later
Let, TimesSwitch cam 3 for detecting the position of the turning cylinder 33
3e, 33f and 33g are formed. The switch A is a switch cam of the rotary cylinder 33.
The movable piece 36a and the fixed piece 37a
Similarly, the switch B includes the movable piece 36b and the fixed piece 37b.
You. The rectilinear barrel 34 has a taking lens 38 fixed thereto.
The keyway 34b is formed on the inner peripheral surface,
To engage with the key 39 fixed to the camera body
Thus, the rotation of the rectilinear barrel 34 is restricted. Also this
A shutter mechanism (not shown) is provided in the rectilinear barrel 34.
Have been. FIG. 10 shows a film winding and rewinding mechanism.
FIG. The spool 40 for winding the film
The camera is rotatably supported by the camera body,
The claw 40b that engages with the perforation of the
Have been. At the lower end of the spool 40, the spool
The worm wheel 40a, which is slightly larger in diameter than
Provided on the body. On the other hand, the film cartridge is rotated around the winding shaft of the film cartridge.
R fork having claw portion 41a integrally engaged in the direction
41 is rotatably supported by the camera body,
The lower end of the R fork 41 is
A slightly larger diameter worm wheel 41b
Have been. Worm wheel 40 of the spool 40
a, the drive shaft 22 is driven by the worm gear 22a.
Are engaged. The drive shaft 22 is connected to the camera body
So that it can rotate freely and move in the axial direction.
Have been. The drive shaft 22 is connected to the worm
22a is provided, and an upper portion
The film end detection lever 20 (see FIG. 2) is driven.
Film end cams 22b and 22c for
The planetary gear 9 (see Fig. 2) is located on the right side
The spur gear 22d meshing with the spur gear is further shifted to the right end in the drawing.
Is integrally engaged with the R shaft 44 described later in the rotational direction.
The coupler 22e that contacts the shaft presser 42 at the left end.
An attached left end face 22f is provided. The worm wheel 4 of the R fork 41
1b, the R shaft 44 is connected to the worm gear 44b.
Are engaged. This R shaft 44 is
It is configured to be coaxial with the shaft 22 and is rotatable.
So that it can be moved in the axial direction
Have been. The R shaft 44 has the above-mentioned wall at a substantially central portion.
And a left end thereof.
Portion engages with the coupler 22e of the drive shaft 22
The coupler 44a has the R fork 41 positioned at the right end.
An end face 44c for controlling the movement is provided. Here, the worm gear of the drive shaft 22
-22K lead angle γK and R shaft worm gear
The lead angle γR of -44b is γK ≦ γR It has a relationship. The shaft retainer 42 is slidable in the axial direction.
It is provided on the camera body, and is
The shaft presser 42 moves in the direction of the drive shaft 22.
A spring is urged, and usually a stopper 45 of the camera body is provided.
a (see FIG. 4). Next, the operation of the embodiment constructed as described above will be described.
Will be described. First, referring to FIG.
The operation at the time of loading will be described. In the initial state,
The driving force transmission mechanism is as shown in FIGS.
You. The patrone P (for example, see FIG. 4) is loaded.
(Not shown) that the rear lid (not shown) has been closed
(S1, S2), the control means (not shown)
Rotates the motor 1 in the direction indicated by the arrow B in FIG.
Hereinafter, this direction is referred to as normal rotation. ) (S3). Then this
The output of the motor 1 is reduced and transmitted, and the output gear 8
Also rotates in the direction of arrow B. The planetary gear meshing with the output gear 8
-9 is provided by a friction washer 12 (see FIG. 2).
Because of the friction, the gear arm 10
It rotates in the direction of arrow B shown in FIG. And
The extension locking portion 10c of the gear arm 10 is provided with an extension locking lever.
-23 is engaged with the end 23f of the arm 23b, and the gear
-The rotation of the arm 10 is restricted, and the planetary gear
9 drives the idle gear 46. Not shown
The pinion gear 35 is moved by the arrow B shown in FIG.
Start to rotate in the direction of. In the initial state, the movable piece 36a of the switch A
Is a switch switch of the rotary cylinder 33 as shown in FIG.
Switch A is depressed into the recess 33i (FIG. 3).
It is off. At this time, the movable piece of the switch B
36b is in contact with the outer periphery 33j of the rotating cylinder 33,
Switch B is on. The pinion gear 35 is moved by an arrow B shown in FIG.
The female helicoid 33d and the male helicopter
The rectilinear barrel 34 is extended forward by the engagement of the coil 34a.
I will do it. As soon as the rotating cylinder 33 starts to rotate,
As shown in FIG.
The movable piece 36a of the switch A is lifted, and the movable piece 36a
And the fixing piece 37a come into contact, and the switch A is turned on.
Change (S4). Further, the rotating cylinder 33 continues to rotate,
When 34 is extended forward, the switch of the rotary cylinder 33 is turned on.
The movable piece 36b of the switch B moves to the cam 33g, and
Up to the fixing piece 37b
The movable piece 36b that was in contact with the switch cam recess 33h
When it falls, it separates from the fixing piece 37b and switches
B is turned off (S5). When the rotary cylinder 33 is further rotated, FIG.
(A), the switching lever in the state as shown in FIG.
-30 is firstly moved by the switching cam portion 33b of the rotary cylinder 33.
When the end 30a is pushed rearward of the photographing optical axis, the switching lever spring 3
1 is bent (see FIG. 18B). In addition, the rotating cylinder 33 rotates
When rotated, the switching lever 30 is switched to the switching cam portion of the rotary cylinder 33.
33b and 33c, the switching lever spring 31
To the initial state (see FIG. 18C). When the rotary cylinder 33 further rotates, the switch
A movable piece 36a of A is a rotary cylinder 33 switch cam 33e part
From the switch cam recess 33h, and the switch A
Is turned off (S6). This signal causes the control means (not shown) to
When the motor 1 is rotated in the direction of arrow A shown in FIG.
Is called reverse. ) (S7), this time the gear arm 10
Rotates in the direction of arrow A shown in FIG.
The portion 10d is in contact with the contact portion 13a of the gear arm stopper 13.
Stop at the applied position. At that position planetary gear 9
Drives the idle gear 46. Then, a pinion is driven by a gear train (not shown).
The gear 35 rotates in the direction of arrow A shown in FIG. This
As a result, the rotary cylinder 33 rotates, and the movable piece 36a is
33 from the switch cam 33e to the outer periphery 33j,
The switch A is turned on (S8). From this signal, the photo interrupt shown in FIG.
3 starts counting the number of holes 2c of the sun gear 2.
(S9), this count value is set to P
The rotation of the motor 1 is continued until one pulse is reached. Then times
As shown in FIG.
Push the tip 30a of the switching lever 30
30 is rotated in the CCW direction in FIG.
The arm on the opposite side of the -30 moves upward in FIG.
Pull up. This string 32 is half-turned on the string guide shaft 21.
The other end of the string is pulled down because it is rolled. to this
As a result, the arm 23a of the extension locking lever 23 is lowered.
That is, the extension locking lever 23 is turned in the CCW direction in FIG.
Turn over. The number of pulses after the switch A is turned on is P
When one pulse is reached (S10), control not shown
The means switches the rotation direction of the motor 1 to perform normal rotation (S
11). At this time, the state shown in FIG.
The locking lever 23 is provided at the extension locking portion 10c of the gear arm 10.
Is the position retreated from the rotation trajectory. The control means (not shown) controls the rotation direction of the motor 1.
The gear arm 10 is now switched to the position shown in FIG.
(B), the gear arm 10 rotates in the direction of arrow B.
The engagement portion 10e is a contact portion 13 of the gear arm stopper 13.
Stop at the position abutted on b. In this position, the planetary gear 9 is
The drive shaft 2 meshes with the spur gear 22 d of the shaft 22.
2 is rotationally driven in the direction of arrow B in FIG. The subsequent operation is shown in FIG.OrFigure 9 as needed
This will be described with reference to FIG. When motor 1 continues to rotate forward
(The state of FIG. 4 is an initial state), the spool 40 and the R fork
Drive shaft 22, R shaft
It is configured so that the straight load of 44 is lighter
Then, the worm gear 22a and the worm gear 44b are reconnected.
The propulsion force is generated on both shafts 22 and 44 due to the lead angle.
To the left in the figure. Here, the worm gear of the drive shaft 22
-22K lead angle γK and R shaft 44 worm
If the lead angle γR of the gear 44b is γK = γR,
The spool 40 and the R fork 41 do not rotate together,
The shafts 22, 44 move while rotating to the left at a constant speed.
You. Also, the lead angle has a relationship of γK <γR.
Then, the drive shaft 22 is moved left by the R fork 41
And the spool 40 rotates to the right in the figure.
As a result, the two shafts 22 and 44 rotate at a constant speed.
While moving. On the other hand, if the lead angle is γK> γ
If the relationship of R is satisfied, the moving speed of the drive shaft 22 becomes equal to the R speed.
Faster than the shaft 44, and the coupler portions 22e and 44a are separated.
Meanwhile, the R shaft 44 cannot be driven.
The mechanism does not hold. Therefore, as described above, γK ≦ γ
The relationship R is set. When the two shafts 22, 44 move to the left,
The left end face 22f of the drive shaft 22 is as shown in FIG.
To the shaft holder 42. At this time,
The shaft pusher is a spring having a biasing force stronger than the propulsion force.
The presser spring 43 biases the shaft presser 42 rightward.
The leftward movement of the shaft is as shown in FIG.
Stop at When the rotation of the motor 1 continues, the spool
The fork 40 and the R fork 41 each start rotating left in the figure.
By rotating the R fork 41 counterclockwise, the inside of the patrone P
The film 47 is sent out and a camera book (not shown)
It passes through the film holder of the body at a speed VR (FIG. 6). The perforation at the leading end of the film (see FIG.
(Not shown) on the claw 40b of the spool 40 (see FIG. 10).
Then, as shown in FIG.
To be wound at the speed VS. Here spool 4
0 for film winding speed VS and R fork 41
The film feed speed VR has a relationship of VS ≧ VR
It is configured as follows. For this reason, the R fork 41
It is driven by the film 47. Therefore, R
The shaft 44 is moved rightward in the figure by the R fork 41.
As shown in FIG. 7, the two coupler sections 22e and 44a
Separate from each other. As a result, the film 47 is attached to the spool 40.
The R fork 41 is wound by the film 47
Following rotation, the R shaft 44 has a camera end face 44c
It can be rotated at the position where it touches the main body. Such a figure
The state shown in FIG. 7 is a so-called known spool drive.
You. A film moving amount detecting means (not shown)
The amount of film movement is a preset amount
(S12, S1)
3), control means (not shown) reverses the motor 1 (S
14). Then, the gear arm 102Medium CW
To the state shown in FIG. 13B again.
Moving. And the planetary gear 9 is the idle gear 46.
And the pinion gear 35 is driven by the arrow in FIG.
It rotates in the direction of the mark A, and the rotating cylinder 33 rotates in the CW direction in FIG.
The switching cam portions 33c and 33b push the switching lever 30
More2Rotate in the middle CCW direction
Passing the tip 30a. Then, the switching lever 30 becomes free.
The extension locking lever 23 is moved by the extension locking spring 27 in FIG.
It rotates to the middle CW direction, and the string attachment hole 2 of the extension locking lever 23
3e moves upward, and accordingly, the string 32 is pulled upward.
To the switching lever 30 via the string guide shaft 21
Since the cord 32 is pulled downward, the switching lever 30
Is a boss that rotates in the CW direction in FIG.
It stops at the position where it abuts on 48 (see FIG. 12). Further, the motor 1 continues to rotate and the rotating cylinder 33
Is rotated, the switch B is switched to the switch cam of the rotary cylinder 33.
33g turns on (S15). As it is
When the straight cylinder 34 is moved backward by continuously driving the motor 1,
Switch A is turned off by switch cam 33f of rotary cylinder 33.
(S16). Control (not shown) in response to this signal
The means stops the motor 1 (S17). This is a straight cylinder
Numeral 34 returns to the initial position and the collapsing ends. Up to here
This is a load sequence. Next, a main switch (not shown) is operated.
Is turned on and the sequence until shooting preparations begin.
This will be described with reference to FIG. Main switch is on
(S21) The control means (not shown) draws the motor 1
When it is rotated in the direction of arrow B (S22), the gear
The extension locking portion 10c of the arm 10 is
At the position where it is applied to the end 23f (see FIG. 11B),
The planetary gear 9 meshes with the idle gear 46, and the pinion
The gear 35 rotates in the direction of arrow B in FIG.
When the rectilinear cylinder 34 moves forward by rotating the cylinder 3,
The switch A is turned on by the rotary cylinder switch cam 33f.
(S23), and then switch by the rotary cylinder switch cam 33g.
Switch B is turned off (S24). When the switch B is turned off,
Control means (not shown) stops the motor 1 (S2
5). The position of the rectilinear barrel 34 is the standby position before the shooting area.
(Ready for shooting). Next, a release button (not shown) is pressed.
The sequence for shooting and winding one frame
This will be described with reference to FIG. Release button pressed
Release, the release switch is turned on (S31).
Distance measurement and photometry are performed (S32). And this ranging
Calculate the delivery amount based on the data and convert it to the delivery pulse Px.
After the calculation (S33), the motor 1 rotates forward.(S34), first
In placeThe switching lever 30 is a switching cam of the rotary cylinder 33.
The distal end 30a is pushed backward by the photographing optical axis by the portion 33b.
As a result, the switching lever spring 31 bends. Further, the rotating cylinder 33
The switching cam 33b of the rotary cylinder 33 passes
The switching lever 30 is moved to the initial position by the switching lever spring 31.
Return to Then, the switch A is turned on
It is turned off at the chicam 33e (S35). This signal
The photo interrupter 3 starts pulse counting.
First (S36), the photointerrupter is applied to the pulse number Px.
When the count value of the receptacle 3 has reached (S37), it is illustrated.
The control unit that does not operate stops the motor 1 (S38). this
The shooting lens 38 until the subject is in focus.
It has been started. Then, a shutter mechanism (not shown) is driven.
To end the shooting (S39). The shutter end signal
After receiving the control signal, the control means (not shown) moves the motor 1 by the arrow in FIG.
When it is reversed in the direction of A (S40), this time the gear arm
12 rotates in the direction of arrow A in FIG. So
The engagement portion 10d of the gear arm 10 is
At a position where the stopper 13 comes into contact with the contact portion 13a,
The rotation of the arm 10 stops. Planetary gear in that position
-9 drives the idle gear 46. Then, a pinion is driven by a gear train (not shown).
The gear 35 rotates in the direction of arrow A in FIG. this
Causes the rotary cylinder 33 to rotate, and the switch A
Is turned on by the switch cam 33e (S4).
1). From this signal, the photointerrupter shown in FIG.
3 starts counting the number of holes 2c of the sun gear 2 (S
42), the count value is a preset P1
The rotation of the motor 1 is continued until a pulse is reached. Then rotate
As shown in FIG. 18D, the switching cam portion 33c of the cylinder 33 is
At the tip 30a of the switching lever 30,
0 is rotated in the CCW direction in FIG. Then, the other end of the switching lever 30 moves upward.
Pull the string 32 up. The string 32 is attached to the string guide shaft 21
Since it is half-wrapped, pull down the other end of the string. to this
The cord mounting hole 23e side of the extension locking lever 23 is further lowered.
You. The number of pulses since the switch A was turned on is P
When one pulse is reached (S43), control not shown
The means switches the rotation direction of the motor 1 to perform normal rotation (S
44). ThisAt the time of, the state shown in FIG.
The locking lever 23 is provided on the extension locking portion 10 of the gear arm 10.
This is the position retreated from the rotation locus of c.And Phil
The detection of the movement amount of the program 47 is started (S45). Since the rotation direction of the motor 1 has been switched,
The gear arm 10 moves in the direction of arrow B in FIG.
And the engaging portion 10e of the gear arm 10
At the position where it comes into contact with the contact portion 13b of the arm stopper 13.
Stop. In this position, the planetary gear 9 is
The drive shaft 22 meshes with the spur gear 22 d of the drive shaft 22.
Is rotationally driven in the direction of arrow B in FIG. The drive shaft 22 and the R shaft 44 are
7, the drive shaft 2
2 rotates the spool 40 in the winding direction,
Film 47 is being wound up. Hoisting at this time
Of the drive shaft 22 due to the motor torque required for
The shaft holding spring 4 is smaller than the propulsive force of the mug gear 22a.
3 is strong, the drive shaft 22 is not shown in FIG.
It only rotates in such a state. Further, whether the rotation direction of the motor 1 is switched to the normal rotation or not.
After that, a timer (not shown) starts (S4
6) A frame, not shown, within the time T1 required for one frame advance.
The film is fed one frame by the film movement amount detection means.
Not detected (S47, S48)
The control means rotates the motor 1 in the reverse direction (S49). Then gi
The arm 10 is turned to the state shown in FIG.
Turn and stop, and pinion gear via idle gear 46
Gear 35 is rotated in the direction of arrow A,
Rotating in the CW direction in FIG. 3, the switching cam portions 33c and 33d
The switching lever 30 is further rotated in the CCW direction in FIG.
It passes over the tip 30a of the switching lever 30. Then, the switching lever 30 becomes free.
The extension locking lever 23 is moved by the extension locking spring 27 in FIG.
It rotates to the middle CW direction, and the string attachment hole 2 of the extension locking lever 23
3e moves upward, and the string 32 is thereby pulled upward.
Tensioned and attached to the switching lever 30 via the string guide shaft 21
Since the string 32 is pulled, the switching lever 30 is
2 Rotate in the CW direction during the initial period as shown in FIG.
Stop at the position where it contacts the boss 48, which is a position stopper.
You. Further, the motor 1 continues to rotate and the rotating cylinder 33
Is rotated, the switch B is switched to the switch cam of the rotary cylinder 33.
33g turns on (S51). Receiving this signal
Control means (not shown) switches the motor 1 to forward rotation.
Then (S52), it rotates in the state as shown in FIG.
When the cylinder 33 is rotated, the switch B is turned on and off.
The control (not shown) is performed when the switch is turned off by the switch 33g.
The means stops the rotation of the motor 1 (S53, S54).
In this state, the above-described photographing preparation state is set again. Here
When the release switch (not shown) is turned on,
The above sequence is performed. A main switch (not shown) is
When the main power of the camera is turned off by operation,
Control means is motor 1In FIG.Rotate in the direction of arrow A
The state shown in FIG.
3Medium CWWhen the switch B rotates in the direction
It is turned on by the switch cam 33g,
Continues to retreat, this time switch ARotating cylinderSwitchka
The motor 33f is turned off by the controller 33f.
To stop. The straight moving cylinder 34 returns to the initial position.
The collapsing ends. Next, FIG. 22 shows the operation of rewinding.
It will be described with reference to FIG. Shutter sequence for single-frame photography described above
The motor 1 is rotated in the normal rotation direction, and
When film 47 is wound up in the state shown in
(At this time, the drive shaft 22 and the R shaft 44 are
It is located as shown in FIG. ) Becomes the film end
And the rotation of the motor 1 is stopped (locked state),
1 indicates that the starting current continues to flow and the starting torque is generated
State. During normal winding, the shaft presser spring 43
The biasing force is the worm gear due to the motor torque during winding.
22a, the drive shaft 22
Only rotates in the position shown in FIG.
The motor starting torque in the locked state of
It is set to be several times larger than Luc. Moreover, the shaft
The amount of force of the presser spring 43 is determined by the
From the propulsive force of the worm gear 22a of the shaft 22
Is set to be weak, so motor 1
When the starting torque continues to be generated, the drive shaft 22
Shaft presser 4 while charging the shaft presser spring 43
2 to confirm that the drive shaft 22 is in the state shown in FIG.
Move to the state shown in FIG. The movement of the drive shaft 22 causes the
The leading end 20a of the lum end detection lever 20 is
2 by the film end cam 22b of the shaft 22
To the film end cam 22c
State. The rotation of the film end detection lever 20
As a result, the other end of the film end detection lever 20 is attached.
String member 19ButThe string member 19 is pulled down
The rewind lock lever 14 is engaged with the rewind release spring 16.
While rotating, it rotates in the CCW direction in FIG. Timer after switching motor 1 to forward rotation
-If the film reaches the above T1, the film movement amount detection means
When the amount of film movement is less than one frame,
Control means switches the rotation direction of the motor 1 to the reverse direction.
Replace (S61). When the reverse rotation of this motor starts,
The film movement amount detecting means (not shown) detects the film 47
The detection of the amount of movement is started (S62). Then, the aforementioned friction washer 12
Of the gear arm 10 due to the friction of FIG.
Rotating in the direction of arrow A in FIG.
Stop at the position where it comes into contact with the end portion 14c of the rewind lock lever 14.
I do. When the motor 1 continues to rotate, the drive shaft 2
2 rotates in the direction of arrow A in FIG.
With the propulsion force of the worm gear 22a of the shaft 22,
The drive shaft 22 moves to the right, and the film end
From the tip end 20a of the detection lever 20 to the drive shaft 22
The film end cams 22b and 22c are retracted, and the film
The end detection lever 20 can rotate in the CCW direction in FIG.
Become so. Further, in the state shown in FIG.
-14 is attached in the CW direction in FIG.
And the locking of the rewinding locking portion 10b of the gear arm 10 is stopped.
Attempts to rotate in the direction to release, but
Gear arm 10 due to friction
16 (B), a rotational torque is generated in the direction of arrow A,
The end 14c of the rewinding locking lever 14 is
The rewind engagement part 10b keeps pushing. The end portion 14c of the rewind locking lever 14 is
The inclination of θ ゜ (for example, about 10 °) shown in FIG.
The rewind locking lever 14 is
Rotating in the CCW direction in the same figure in response to the urging force of the spring 16
The force that is applied is applied and hits the stopper 17
Stopped at the position The drive shaft 22 moves rightward.
Then, the engagement coupler portion 22e of the drive shaft 22 and the R
And the engagement coupler portion 44a of the lever 44 engages and rotates integrally.
(See FIG. 9), the spool 40 and the R fork 41
The film 47 rotates in the rewind direction, and the film 47
Has been wound into patrone P by fork 41
Good. Here, the film 4 by the R fork 41
The rewinding movement speed VR 'of FIG.
Lum 47 is slower than the speed VS 'at which it is fed in the rewinding direction.
The relationship is set as VS'≥VR '. Obedience
That is, the film wound close to the spool 40
47 is loosened, and the claw 40b of the spool 40
Departing from perforation, the so-called known R
The film 47 is rewound in a hard drive state. During rewinding as described above, a file not shown
The film 47 has been rewound by the rum moving amount detecting means.
Is detected by the film movement amount detection means.
Is detected that the rewinding of the film 47 has been completed.
Roller (S63) (At this time, in a state as shown in FIG.
is there. ), Control means (not shown) causes the motor 1 to rotate forward
(S64), the gear arm 10 has the engagement portion 10e
Position of the arm arm stopper 13 against the contact part 13b
Rotate up to. When the forward rotation of the motor 1 starts, the photo
Pulse counting is started by the interrupter 3 (S6).
5). Thus, the rotation gauge of the rewinding locking lever 14
The rewind locking portion 10b of the gear arm 10 is retracted from the trace
Therefore, the rewind locking lever is operated by the urging force of the rewind release spring 16.
14 rotates until it hits the boss 18 as a stopper.
You. The rotation of the rewinding locking lever 14 causes the string
Film end detection lever 20 connected by the member 19
Rotates in the CCW direction in the figure,
State. Counting by the Photointerrupter 3
Reaches a preset pulse P2.
(S66), the control means (not shown) reverses the motor 1
Then (S67), the state becomes as shown in FIG.
The cylinder 33 rotates in the CW direction in FIG.
c, 33b further move the switching lever 30 in the CCW direction in FIG.
And passing the tip 30a of the switching lever 30
The switching lever 30 becomes free, and is extended by a string 32.
The locking lever 23 is moved by the extension locking spring 27 in the CW direction in the drawing.
2, the switching lever 30 is moved in the CW direction in FIG.
To the boss 48, which is the initial position stopper.
It stops at the position (see FIG. 12). Further, when the motor 1 rotates in the reverse direction, the rotary cylinder 33 rotates.
Switch B to the switch cam 33g of the rotary cylinder 33
(S68), the rectilinear cylinder 34 continues to retreat, and
Switch A is turned off by the switch cam 33f of the rotary cylinder 33.
(S69), the control means (not shown)
Is stopped (S70). With this, the straight moving cylinder 34 is in the initial
Returning, collapsing ends. [0100] As described above, according to the present invention, simply
Using one rotary drive sourceTwo driven mechanisms (for example,
Film winding and rewinding mechanisms and lens frame drive
The drive force can be switched so that it can rotate in both forward and reverse directions
introduceInexpensive and compact camera driving force transmission
A mechanism can be provided. [0101] As described above, according to the present invention, simply
Driving the lens barrel and film using a single rotary drive source
Inexpensive and compact camera driving force transmitter that can perform
Structure can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing a differential gear mechanism in a camera according to an embodiment of the present invention along an output shaft direction. FIG. 2 is a partially exploded perspective view showing the planetary gear switching mechanism of the embodiment. FIG. 3 is an exploded perspective view showing the lens barrel of the embodiment. FIG. 4 is a plan view including a partial cross section showing an initial state of the drive shaft and the R shaft of the embodiment. FIG. 5 is a plan view including a partial cross section showing a state in which the left end surface of the drive shaft is in contact with the shaft retainer in FIG. 4; FIG. 6 is a plan view including a partial cross section showing a state in which the film is started to be fed from the film cartridge in FIG. 4; FIG. 7 is a plan view including a partial cross section showing a state in which the drive shaft and the coupler portion of the R shaft are separated from each other and the film is wound around a spool in FIG. 4; FIG. 8 is a plan view including a partial cross section showing a state in which the drive shaft presses the shaft presser to charge the shaft presser spring in FIG. 4; FIG. 9 is a plan view including a partial cross section showing a state in which the drive shaft and the coupler portion of the R shaft are engaged and integrally rotated to rewind the film in FIG. 4; FIG. 10 is a perspective view showing a film winding and rewinding mechanism of the embodiment. FIGS. 11A and 11B show an initial state of the planetary gear switching mechanism of the embodiment, and FIG. 11A is a partial view from the front, and FIG. FIG. 12 is a diagram showing a state in which the switching lever contacts the boss in FIG. 11 and the gear arm rotates in the direction of arrow A to contact the gear arm stopper; FIG. 13 is a diagram showing a state in which the switching lever is rotated left and separated from the boss in FIG. 11 and the feeding locking lever is rotated left. FIG. 14 is a sectional view of the gear arm shown in FIG.
The figure which shows the state which rotated in the direction and contacted the gear arm stopper. FIG. 15 is a diagram showing a state where the film end detection lever is in contact with the film end cam in FIG. 11; [16] In FIG 11, illustrates a state where the rewinding locking portion of Giyaamu has contact with the engaging portion of the rewinding lock lever. FIG. 17 shows a state in which the movable piece of the switch according to the above embodiment is (A) engaged with the switch cam recess of the rotary cylinder and separated from the fixed piece and turned off, and (B) is engaged with the outer circumference of the rotary cylinder. FIG. 6 is a cross-sectional view showing a state where the fixing piece is turned on in contact with the fixing piece. FIG. 18 is a partially enlarged development view showing the positional relationship between the face gear of the rotary cylinder and the tip of the switching lever of the embodiment. FIG. 19 is a flowchart showing an operation at the time of automatic loading in the embodiment. FIG. 20 is a flowchart showing the operation of the image capturing preparation of the embodiment. FIG. 21 is a flowchart showing an operation of shooting and rolling up one frame in the embodiment. FIG. 22 is a flowchart showing a rewinding operation of the embodiment. [Description of Signs] 1 ... Motor 8 ... Output gear 9 ... Planetary gear 10 ... Gear arm 14 ... Rewind locking lever 20 ... Film end detection lever 22 ... Drive shaft 23 ... Extending locking lever 30 ... Switching lever 33 ... Rotating cylinder 33a: face gear 34: straight barrel 38: photographing lens 44: R shaft

Claims (1)

(57) [Claim 1] A single rotational drive source capable of normal and reverse rotation, a first driven gear mechanism, a second driven gear mechanism, a sun gear and the sun It is supported so that it can revolve around the gear.
Planetary gears, the first driven gear mechanism and
A planetary gear for selectively transmitting the driving force of the rotary drive source to one of the second driven gear mechanisms ;
The switching mechanism and the planetary gear of the planetary gear switching mechanism
It is provided so that it can enter and retreat freely.
The planetary gear is controlled by the first gear by regulating the rotation of the star gear.
By keeping it in mesh with the driven gear mechanism,
A first locking member for releasing the rotation restriction of the planetary gear
On the orbit of the planetary gear of the planetary gear switching mechanism.
It is provided so that it can enter and retreat freely.
The planetary gear is controlled by the second gear by controlling the rotation of the star gear.
By keeping it in mesh with the driven gear mechanism,
Second locking member for releasing the revolution restriction of the planetary gear
And the first driven gear driven by the drive source
-The first lock is mechanically linked to the displacement of the mechanism itself.
First locking / release switching for enabling locking / release switching of a member
A mechanism and the second driven gear driven by the drive source
-Mechanically linked to the displacement of the mechanism itself, the second locking
Second locking / release switching for enabling locking / release switching of a member
Mechanism , the first driven gear mechanism, and the second driven gear
Selectively driving the mechanism and the first and second locks
・ The locking / release switching operation is performed by the release switching mechanism.
Sea urchin, anda control means for controlling the drive source, the normal and reverse rotation switching drive control of the drive source by the control means
Thus, the first driven gear mechanism and the second driven gear mechanism
The drive force of the above drive source is selectively transmitted to the drive gear mechanism
And the first driven gear mechanism and the second
A driving force transmitting mechanism for a camera, wherein the driven gear mechanism can be driven to rotate in both forward and reverse directions .