JPS5883829A - Film automatic rewinding device - Google Patents

Abstract

PURPOSE:To rewind a film automatically when winding is terminated, by using outputs of a photocoupler, which detects the transportation state of the film, and a roller, which detects whether the film is present or not, to start and stop the rewinding. CONSTITUTION:A photocoupler 35 which detects perforations 41 to detect the transportation state of a film is provided in the transportation path of a film 34, and a detecting roller 18 which detects whether the film is present or not is provided on a spool 17. When the film approaches the terminal during winding, the turn-on/off constant signal of the photocoupler 35 is not steady. This is detected to reverse a motor M1, and a gear 8 is allowed to engage with a gear 27 to start the rewinding. When the film 34 runs out, it is detected by the detecting roller 18 to turn off a switch SW1, and the power supply to the motor M1 is stopped to stop the rewinding. Therefore, the film is rewound automatically when the winding is terminated, and thus, handling is very convenient.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic rewinding device for a camera, and more particularly to an automatic film rewinding device using a mechanism for detecting film transport.

In conventional cameras, after winding the film to the end, the user had to press the R button and turn the film rewind crank to rewind the film. Even in cameras that use a motor to rewind the film,
This method has the disadvantage that it is very complicated to turn on the film winding switch.

In order to eliminate the above-mentioned drawbacks, the present invention provides a film that automatically starts film rewinding at the end of film winding and automatically stops film rewinding when film rewinding is completed. The purpose is to provide an automatic rewinding device.

The present example will be explained below with reference to FIG. 11KIi.

1II is a main part configuration diagram of a camera to which the first embodiment of the present invention is applied, FIG. 1 is a perspective view of a switch Iw4,
FIG. 3 is a perspective view of the back cover 39. The pigeon is a motor, V
A pinion gear 3 is installed at the tip of the motor via a 4-wheel motor, and the rotation of the 4-motor range is 44 to 6! It is decelerated and transmitted to gear 7. The gear t meshes with the gag and is mounted on a base plate with the gag pivot turtle as the center of rotation. Therefore, depending on the direction of rotation of the motor pigeon, the gear t can mesh with three gears of 10°//, , /-, or with a gear body. Gear IO is・Gear IO
Sprocket for film feeding via shaft 101)/3
has reached. The gear saw is gear 144/! ! , 7 Rixi MWA Ne/6 to transmit the spool/lK rotation.

The spool 17 is provided with a thin warp part /7%, and the film detection roller /l supported by the support member /de is pulled by the spring 〇 and comes into contact with the outer periphery of the thin warp part /7%. There is. Film detection roller/l is spool/l? When the IC film 3 is wound, it is pushed to the outer periphery of the film 3 and the switch SWi is turned on at this time. Gear // rotation!
The gear JJK is transmitted through the small gear.

The Gyaco 3 has a Camco J*ti&a number C on its upper part and is connected to a charging mechanism (not shown) such as the V-Yator and the Maro-Focus Gonichi. Below Gyaco J, there is a fixed-length feed output force 3b on the lie, which is pulled by a spring 2j. comes into contact.

When the protrusion at the tip of the fixed length feeder falls into the recess of this cam JJb, is it sweet? I horse is ok? The rotation of the motor pigeon stops and the fixed length feed is completed.
, 2t, , 30.3/ and sequentially transmits one rotation to P) a-ne 3
Turn the 3 film rewinding forks that have been tlled once into the center hole of 3. A photo coupler 3j is provided at a position where the perforation *y*t of the film 3 passes.

Film J#'s perforated vmy reference is this Photo Cub Two 3! A signal passing through 411 is output to a drive circuit to be described later. A counter drive gear O is provided above the gear 10 via a ring ○a, and a spout p
+ Tsute/J's l rotation and power ☆ Nta Drive Gya +0 and counter Jttt/ko through Gadako! send. A convex portion 34& is fixed to the peripheral edge of the counter 3≦, and when the counter 3t points from "8" to the rIJ ceramic, this convex portion -J6a' is the convex attached to the tip of the switch SW. Press section 37 & to turn off the switch SW. Also, there is a convex on the back panel 39 @J? a, and when the back panel 39 is meshed, the convex portion Jlh of the switch SW4 is pressed to turn off the switch SW4.

Next, the circuit constituting the device according to the first embodiment of the present invention is
This will be explained with reference to Figure I.

FF4 starts film winding with JK flippf 10 tubes,
During winding and dry feeding, a high level signal is output from the output terminal Q, and input terminals J&: terminal T of the control circuit (not shown) are oscillated. The clock pulse generator circuit (not shown) is connected to the clock pulse input terminal CPk.
enters.

The output terminal of the OR circuit 04 is a terminal of a control circuit (not shown) connected to the input terminal KK! The snow is connected to the reset input terminal IK, and the output terminal of the JK flip FF is connected to the input terminal of the AND circuit MHA, and the output terminal Q of the JK flip FF is connected to the input terminal of the AND circuit MHA. It is connected to the input terminal of D, the input terminal of the 1y-doctor circuit M-, and the input terminal of the OR circuit O-. Furthermore, the output terminal Q of the JK tree flop FF is connected to the input terminal of the OR circuit O. O- is the OR path, and the force is applied when the tension of the film is detected while the film is being rolled up.・JK The output terminal Q of the flip-flop FF is JK.
Input terminals Jk and OR 11 of the trip FF
The input terminal of g5o- and the input terminal of yjl multi-devibrator OI4 are connected to 1cmIm.

OR1 is an OR circuit which outputs a signal at level ^ upon completion of winding and completion of winding stem. Its output terminal is the terminal TIK! of a control circuit (not shown). l-Salimo AND circuit mu-
The output terminal of is connected to the input terminal of OR circuit O-. The output terminal of the AND circuit D4 is connected to the input terminals of the OR circuits 04 and 04, and the iFF detects the tension state with the JK tritub flop and is set, outputting a level signal to the Q terminal and starting winding. It is reset by the film winding switch tff, and outputs a low level signal to the Q terminal.

Terminal of control circuit not shown? , are connected to the reset input terminal of the JK tree flop FF, and a high level signal is input when the power is turned on or at any other desired time.

A clock pulse threat circuit (not shown) is connected to this clock pulse input terminal CP, and a clock pulse signal is input thereto. Inverter circuit! The output terminal of N is connected to the input terminal of JK flip-flop rr, the input terminal of AND circuit D, the input terminal of JK flip-flop FF, the input terminal of OR circuit O-, and D flip-flop':1 Connected to reset input terminal 1 of syrup FF4.

The output terminal of the JK Tripflots Pr9 is the input terminal of the AND circuit, the input terminal of the Atsu 711111F, the input terminal of O, 1 circuit O-, and the buffer circuit ■
It is tangent to the input terminal of 4. The output terminal of the buffer 1 circuit 11F is grounded via a resistor and a light emitting diode u1. Ii resistor is the current limiting resistor and light emitting diode L is the display means in the winding layer! One module is an AND circuit, the film is solved, and the JK flip-flop r? −
to the pigeon house which outputs the ^repel signal from output terminal q,
This is a circuit that outputs a level signal indicating the status of completion.

O- is the orr road, which is a place where the J-section trip a-tub FF outputs the signal of the high level, or a road that outputs the signal of the low level in the v1 of the film. Its output terminal is connected to the input terminal of the buffer circuit IF.
Next, M D is a light emitting device that forms the photocoupler 3j after the film is wound up by the stop signal in the yFiil path. This is a path that will make you want to give up. One terminal of switch IW1 is grounded, and the other terminal is an inverter circuit! – is connected to the input terminal. Electrical #IvDD is also a resistance.
Inverter circuit through! – is connected to the input terminal.

The resistor is an inverter circuit! - This is a pull-up resistor.

The output terminal of the inverter circuit IN is an inverter circuit! It is connected to the input terminal of the oscilloscope and the input terminal of the 1y-board circuit D. The output terminal of the AND circuit M is the buffer 1 circuit Bν
The output terminal of the buffer 1 circuit IF, which is connected to the input terminal of , is a transistor! - Connected to the pace of. ! - is a transistor (for switching) that connects the light emitting diode LH%7 that constitutes the photocube 35. The terminal of transistor T- is grounded.

Electricity 111Vp.

is connected to the collector of transistor T- via a resistive island and a light emitting diode LE-. LItQl is a light emitting diode! Configure Photo Cub Two 35. - is the resistance and the voltage t
Current limiting resistor input from lVDD! be. T14
is a photo ↑ tungister and together with a light emitting diode IJ- constitutes a photocubu two 3j. 33 is a photo cube two with 1 light emitting diode LID4 and a phototransistor! The performance of film 3 moving between - → -V! In-Reference
6. Phototransistor which is a means for detecting the moving state □ of the film 3Il by detecting the moving state of the film 3Il!
- Kotomo ivy is grounded. The power supply VDD is connected to the inverter circuit via the resistor w & island! The input terminal of the input terminal is connected to the collector of the y-distate 4.

Resistor - is a pull-up resistor for the inverter path. Inverter circuit! The output terminals for
1 through the input terminal of the rose 11111m9 and the resistor -
and Ayaike through a parallel circuit of diode DI. PundeyfC, and resistance 1. is a circuit that differentiates the output signal from the inverter circuit IN. Dio-F- is the negative output of this differential waveform! It is a means of clamping. buffer[
The output terminal of 111F is connected to the input terminal of OR circuit 1IO- and the clock pulse input terminal CP of D flip-flop rr4. This is a switch means for

Next, FF is a D flip-flop circuit that is turned on and off every time a perforator invader is detected, and a 0-inverting output terminal Q is connected to an input terminal DK.

The output terminal Q is connected to the input terminal of an AND circuit D. The output terminal of the AND circuit D is the buffer IWA path IF,
The output terminal is grounded through the resistor island and the light emitting diode IJD. The resistor - is a current limiting resistor. The light emitting diode IJQ is a means for indicating that the film is being wound. The 7y side circuit is a circuit that outputs a high level signal only during winding.

The next KOI is an OR circuit that outputs a level signal in order to reset the trigger circuit CT using either the pulse signal generated by the detection of the barf ore v*y during winding, power-up, or power-up. This is the circuit that performs this. The output terminal of the OR circuit OR is connected to the reset input terminal of the circuit CT, C! , is the kakunta circuit)q
- A clock pulse generation circuit (not shown), which is a 1i circuit that detects the absence of a Foray ν pin, is connected to the a clock pulse input terminal CP K, and the carry output terminal C is connected to the JK terminal 7a terminal FF, #) terminal JKII-. Ru. FF.

This is a circuit that detects the 1ll9 of the film using a JK7 lip-flop. Il not shown, the pulse generation circuit is connected to the clock pulse input terminal! I - Terminal of control circuit not shown! The output terminal Q is connected to the input terminal J of the JK trip flop FF, the input terminal of the input terminal O, and the input terminal of the monostable multivibrator O. @Output terminal +9 is connected to the input card 100 of AYFIm path D.Mu is connected to the A Vt'li path when the switch 1% is turned on when the winding is not carried out. This is a circuit that detects and outputs a signal of Heylepel.
The output terminal of N4 may be connected to the input terminal of D4.

The output terminal of the rose 11 times $IF is a transistor!凰.

The pace of Kll is covered. The I-island is a transistor for a switch that is turned on during winding and turns on during winding. The emitter is grounded and the terminal is connected! ,and! , is connected to the collector. The output terminal of the A buffer circuit IF is connected to the base of the transistor TR.

The T-wing is a switching transistor that turns on during unwinding.

The emitter is grounded and connected to the collector of transistor T- via the power supply VBBib relay.

The relay is a transistor! This is means for switching by acting on the control terminal of the switch sW- by a signal from R8.

BW is a switch means for switching between forward and reverse rotation of motor M.

Power supply VDD is connected to terminals 〒4 and TIK of switch 1i1-
Connected. The power supply vDD is connected to an inverter circuit via a resistor! - is connected to the input terminal of switch 8 and the terminal of switch 8. The resistor is an inverter circuit! - This is a pull-up resistor. The other terminals of switch 1% are both connected to two control terminals of switch 11. One terminal of the motor pigeon is connected to the terminal of the switch 8 bird, and the other terminal is connected to the terminals of the switch 8WS and SW. Further, the terminals of the switches mW- and 8W4 are connected to the terminal of the switch S%.

8W is a switch means that performs xty when winding is completed. 8-cho is a switch means that turns on when the back cover fights with a switch. The I-hike is a switch that is turned off until the idle feed is completed. - The outer area is hoisted with forward rotation,
The output terminal of the 0-order single-wire multivibrator 0-, which is a driving means for winding layers in reverse rotation, is a resistor- and a light-emitting diode-F.
Grounded via LM. The resistor is a current-eliminating Ii resistor.

The light emitting diode Ll- is a means for indicating the so-called tension state in which the film slips after winding is completed.

Next, the operation of the device according to the first embodiment of the present invention, which is composed of one or more configurations, will be explained based on the device diagram in FIG. 11IL1, the device diagram in FIG.

First, we will explain what happens when the film 3 or cassette 31 is not loaded in the camera and the spine is open and the ν Yutter button y is pressed. When the back 11jf is connected, the switch SW4 is on and the 11') yri 34 is turned on by the
It has returned to the 8J position. Therefore, 37% of the convex portion of the switch 8 rides on the convex portion 361 of the kakunta 36 and is turned off. In addition, when the cartridge 33 is not loaded in the camera, the two film inspection rollers/l are in contact with the outer circumference of the narrow diameter part/'1% of the spool L, and the switch 8 is off and in this round state. Pressing the V-YATTER button activates the autofocus mechanism and V-YATTER. When the operation of the V-shape is completed, a member (not shown) rotates the fixed-length feeding repercoder K clockwise (viewed from the top of the camera, the same applies hereafter), and turns off the switch 1%. After that, a film winding signal is sent from a control circuit (not shown) to the input terminal JK of the JK block flop FF via the terminal TI.
The flip-flop FF outputs a high level signal from the output terminal Q to the OR circuit O-. OR circuit 0- is this K
A higher level signal is output, and this signal passes through the buffer circuit, line BF, and turns on the transistor TR1.

At this time, are the sweets at both ends of the seven-tar pigeon? The 11% wheel is connected to the T side, and the soter wheel rotates counterclockwise.

The rotation of the counterclockwise direction of the motor pigeon is transmitted through gear 6 and 4 to the main plate 9 fixed to the shaft 71 of gear 7', and from this the main plate tKml is movably supported by the main plate 9. t is gear 10. //, meshes with /ko. This gear t and gear 10
．． Due to the engagement of //, /:1, the shaft of gear I/O /1K
KII [installed sprocket /3, and gear i,
! The spool 17 is rotated through the fill 5 rolls Kamigata E11 through I and is, and the charging system charges the switch 3 by the force 3 turtle provided on the gas 3. During this time, the spool 17 is rotated through
Since the output signal is off, the input signal of the inverter circuit IN is at a high level, and the input signal of the inverter circuit IN, ``e1. e!It@1
1 and it becomes a high level. This Heilepel signal is the OR circuit 01. , the OR circuit 0- outputs a signal at level I to the reset input terminal of the cuff circuit CT. , carry output terminal C of
The output signal from is never a Heylepel signal. Also,
Inverter circuit! N, level output signal is JK
Input terminal KK of flip-flop rr, JK
The clip flop FF outputs a low level signal from the output terminal Q of the JK flip flop Fr, and the OR circuit ON, 6c, and the Heilepel signal from the inverting output terminal Q to the ant circuit D4. As charging progresses, the member that rotates the fixed-length feed lever in the direction of the hour hand is also charged, and the short-length feed lever rotates completely! rotate counterclockwise.

When winding up of each frame of the film 3 is completed, the protruding end of the fixed length feed lever comes into contact with the recess of the cam 3b, and the switch fSW is turned on. This is an inverter circuit! The - input signal becomes low level, this - level signal is inverted by the inverter circuit IN, and the HIRE/I/) signal is input to the AND circuit D4. The AND circuit D4 receives the high level signal from the output terminal Q of the JK flip-flop FF, so all the input signals of the AND circuit D are high level, and the AND circuit D4 ORs the high level signal. Circuit 01m, 01
sK goes out.

As a result, OR circuit 01. Connect the high level signal, that is, the end signal! - is output to a"c control circuit (not shown), and the OR circuit O- outputs the ^Irepel signal to J
K outputs the input end of the flip-flop FF, and J
K Tsuritubu flop FF outputs a low level signal from output terminal q to OR5101. Output to @ On the other hand, JK
flip flop? A low level signal is input to the input terminal J at number 9.

The JK tree flop PIF outputs a low level signal from the output terminal 9 to the OR circuit 014. Gatatsu [
, the OR circuit O- outputs a low-level signal #h, and this signal passes through the t-balance circuit IF- to OR the transistor TR. Sweets at the same time? Since both ends of the starter are connected by the 1% ON operation, the starter comes to a halt and the film winding ends. In addition, during this time, Kakuytadotsuipugya 4EO is Kakuyuta 34's gear 4g.
Since the engagement with J has been removed, the cuff 36 is progressing, and therefore the sweet? IWs will never turn on, V guy-dl with the back @39 open like this
The camera operates normally even if fV is pressed, so you can easily check the camera operation.

Next, a description will be given of the operation when the V-type button is pressed with the camera back cover 39 closed and no film cartridge 33 loaded in the camera. At this time, the switch SW4 is turned on by the convex portion 39% of the back @39, and a mechanism (not shown) turns on the kakunta drive gear 4IO.
And Kakunta 36's gear 4! Engagement with the other is performed. However, as in the case described above, since the film 3 is not loaded in the camera, the film detection roller /l is in contact with the narrow diameter part /7 of the spool, and the switch is turned off. If you press the V Yatsuta button in this state, the above-mentioned back cover 3! With the button open, perform the same action as when pressing the ν button to wind it up. However, even if the protruding end of the repertoire that is being fed a fixed length after winding is finished and the switch S is turned off by contacting the concave part, the back cover 3t is still closed. s-hiki remains off, switch-chimo, ★riyri J4 [8
Since it is near the I position, it is turned off and dragged. therefore.

Inverter circuit! −, the input signal is ＾Irepel,
7) A low level signal is input to the /Flllim circuit D4, and the IY circuit D4 inputs the low level signal to the first circuit O.
Output to R. Since the output signal of the output terminal Q of the ``Yll@o-'' input signal is low level, the 11i
is a low level signal and is input to the input terminal of the JK tree flop FF. In other words, the output signal at the output terminal Q of the JK flip flop FF is the same as before. Therefore, when trying CX, the motor pigeon is energized and can reach all the way to the capital, and both ends of the motor pigeon are l
For this reason, the spool tt
, Sprocket/3. The gear/I is turned completely in the film winding direction, and the repertoire, which has a different standard length, has a protruding part at the tip. It is pushed out from the concave part b, and the hour hand moves -Ell, and the switch and the tip 8W become OR again. If this is repeated several times, the cuff will be squeezed 341 times, and the customer will cum 4l.
OK, the switch is advanced and reaches the "I" position, and the convex part 37 of the switch f3 and the convex part jA&#) of the kakunta 36 are disengaged [Switch W is turned on. Thereafter, when the protruding end of the fixed length feed lever Koda falls into the recess of the force lever 3b, the switch Il- is turned on and a signal of AND circuit D4#Ic is output. Then, all the input signals of the AND circuit D4 are Heylepel signals, and the AND circuit D4 inputs the Heylepel signals to the OR circuit o111. ol,
Output to. The first circuit OR is a high level signal JK
Input terminal KK small output of flip-flop bushing F,
JK flip flop FF.

is output from the output terminal Q to the OR circuit OR, which is a low level signal. Since the other input signals of OR circuit 0- are also at low level, the output signal of OR circuit 1IO- changes from high level to low level [, turns off transistor TIE, stops power supply to the motor, and Both ends of the motor M are short-circuited, and 1111m1F is suddenly applied to the motor M, and #+
An end signal is output to a control circuit (not shown) via terminals T and tl-. The operation so far corresponds to the blank feed of the film, and even if no film is loaded, the operation of the blank feed of the film can be confirmed.
I can do it. Is the action after it a sweep? Instead of IIW1 being off, Sweets f8 town is on, so except for cuff y 3A going forward, when the back St is connected and gold (
It is the same, and you can check the operation of the camera even if film J4I is not loaded.

Next, the operation when the film 3II, that is, the cartridge 3J is loaded into the camera will be explained in II&-. When I set up the camera KgII with film 3, close the spine 11Jf, and press the V button, the above-mentioned film 34! is the camera
Start feeding the film 74I in the same way as when it is not loaded. The film 34I is sprocket'/
Spool l by jK? Spool L? wrapped around.

When the film 3 is wound around the spool, the film detection roller □-/l is.

The narrow diameter part 17 of the spoo A-/7 comes out of contact with the tortoise and rotates clockwise, turning on the switch 81v1. When the switch 1W1 is turned on, the input signal of the inverter circuit X- becomes high level, and a high level signal is output to the AND pedal. Since the output terminal q of the JK trip flop FF outputs the signal from the output terminal q to the other input terminal of the AND circuit AD, the signal from the output terminal is sent to the AND circuit AD via the buffer circuit IF, and then the transistor ? Outputs R and K, and from this k, transistor 'TR
, and photo coupler 3! starts working. Photocoupler 3! f is the parts orage m of film 34I
y4Il is photocoupler 3! When passing through f, the transistor TR4 outputs a periodic ON/OR signal to the inverter circuit IN1. Inverter circuit! The on and off signals inverted by the gamma filter are differentiated by a differentiating circuit consisting of a false capacitor and a resistor R3, and then are transferred to a buffer circuit BF,
Through [OR circuit OR, K is input.

As long as a periodic on/off signal is output from the photocoupler 3S, a high level signal is sent from the output terminal of the OR circuit 04 to the reset input terminal 1 of the kakuntai circuit CT.
1, so the output signal from the carry output terminal C of the kakunta circuit CT never goes to the high level.On the other hand, the clock pulse input terminal CPK of the D flip-flop FF4 ) Capra 3! The periodic oy output every time the Qin passes through,
The differentiated signal corresponding to the OR signal is
The input signal is input via the input circuit IP, and a low-level repeating signal is output from the output terminal Q of the D flip-flop FF4.

Since the output signal of the output terminal q of the JK trip flop FF, which is the input signal to the other input terminal of the AND circuit D, is a high level, the yytrw circuit D is a high level, low level momentum signal. A signal corresponding to the buffer 111111F and the resistor is outputted from the light emitting diode IJEkK. From this point on, the light emitting diode LIQ repeats the display and displays "Fill Volume 5, Upper and Middle". In addition, in the embodiment of this invention, the film detection roller/
Both l and photocoupler JI are arranged so as to detect the part orlay v1y reference l on the Okaji side, and this
Therefore, regardless of the mounting position of the photocoupler 3j, no matter how long the notch in the leader part of the film JII is, the film ? +1 was wound around the spool/ri, but photo coupler 3! There is no possibility that f will not be detected at perforage + iyl/, but photocoupler 3! If f is always installed at the position where a part of the IJ-g of the film 341 ends when the film detection roller/1 detects the film 3, the photocoupler 33 and the film detection roller/If) 1. may be placed differently.

In this way, load the cartridge 33 into the camera and
j? Close the camera and press νYatsutasekun once to automatically advance film 34I to the shooting position, and at the same time, a message will appear indicating that film 3DA has been advanced to the shooting position, allowing you to take photos quickly and easily. You can do it with confidence. If you press the shutter button from now on, the film 34 mentioned above will appear!
After the autofocus mechanism and shutter operate in the same way as when the spool is not loaded,
3 rotates in the film winding direction and stops after rotating for l frame (in this case, actually winding the film 3). During this time, the light emitting diode IJD displays "Twielm winding" and the cuff J4 misses by a frame.
Also, during this time, the fork JJ is rotated in the direction of the hour hand because the cartridge JJ is being pulled out, and the gears si, sakot, jt, and gears are being transmitted. Since the gear t is not engaged, there is no gap between the layers. However, as the shooting progresses and the film is being wound, the film s+
When tit disappears, the load on the motor increases, but at this meeting, a slip occurs at the threshold of ``29! prevent, e no yo 5,
Since the film A4III is not fed while a slip occurs between the FLCL 1 frame and the pinion gear J, the output signal level of the photocoupler 3S is constant at either the level or the low level. The differentiated signal is not output, and the input signal of the OR circuit O is at a low level.

Then ``C switch llW!l is y, so a)//
(-verter circuit 1) The input signal of El is at a low level □, and the output signal from the I/V converter circuit IN to the OR circuit 0 is at a low level. Also JK flip flop r
The output signal of the inverting output terminal q of rl is also at low level.

Therefore, the reset input terminal R of the Kakunta circuit CT
K does not receive a high-level output signal, ie, a reset signal, from the OR circuit OR1, and the kakuunta cycle @CT outputs a high-level signal from the output terminal Q after a certain period of time has elapsed. JK flip float? , this high level signal is input to the input terminal JK, and the JK flop F
The output signal of the output terminal Q of F is high level, and the output signal of the inverted output terminal Q is low level. The output signal of this output terminal Q is input to the OR circuit 015, and the OR circuit O- outputs a level signal to the input terminal KK8 of the JK flip shift yv. When a level signal is input to the input terminal KK8, the JK flip-flop A tube rr outputs a high level signal from the 1-inverted output terminal Q to the OR circuit (circuit O-), which causes the OR circuit O- to go to The person who resets the signal of Ireperu in Kakunta circuit CT, 11.

Power terminal RK outputs. After this, the cuff y circuit CT, the glue set input terminal IK beam -w:, y>signal xtts is input, and the cuff y tail circuit Or is in the reset state 11 &
) 4 @ t *, JK The signal at output terminal Qr5 of the flop flop rν is output to the multi-vibrator 0, and the multi-vibrator OM outputs the signal at the output terminal for a certain period of time.

This signal passes through a resistor and is outputted from a light emitting diode Li1DaK, and one light emitting diode U1 is output for a certain period of time to indicate "Film End". iL et al KJK flippf a
The high level signal from the output terminal of Tsubu FIP is J
K flip float? is input to the input terminal JK of ,
The signal from output terminal Q to trip a is sent through buffer circuit IP, #, and OR path 04 to Rough path IP.

Output k. It's so cool! -and! - is turned on and connected to TotsuyO star T4 -chiru relay L
1, the switch f11% is switched to the terminal T1 side, -Kmlll flows through the motor in the opposite direction to that during film winding, and the motor rotates in the direction of the hour hand El1. In this case, the ll1lliifl seaweed in the spear motor area is opened, so it doesn't matter whether the switch SW is on or off.

The rotation of this motor in the direction of the hour hand is controlled by pinion gear 3.
The signal is transmitted to the gag via the gear 414, rotates the main plate t in the direction of the hour hand, and shifts the gear t to the gear 10. //, disconnect from the mesh with /, and mesh with the gear body. 70 rotations of gear is transmitted as gear exclamation, = za, kode, 3θ, 3i,
Rotate the 3 forks clockwise and start winding the 3 dabs of film. During film rewinding, the film 3 rotates the sprocket 73' and therefore the kakuntata trifkada o in the direction of the hour hand, and the kakuntata 36 rotates in the opposite direction. It rotates in a clockwise direction, and this rotation is only transmitted to gears IS, i, and l, and the rotation of gear IO and gear l- do not interfere with each other.

Furthermore, since the Gyaco 3 for charging and fixed length feed does not move at all even when the film is rewound, the f-yage system members and the fixed length feed lever A-tei get stuck with the Camco 31 or K3b and cannot be moved. It will not disappear, and during this time, the output from the output terminal Q of the JK flip-flop FF.
The signal from Irepel is sent to the buffer circuit IIr and the resistor.
ii"c and light emitting diode IJQ and g are output, and the light emitting diode FLIIDa lights up to display "Film winding in progress". As the film rewinds and the kakunta 34 moves from ``l'' to position 11, the convex part JK turtle of switch 8 rides on the convex part jALK of cuff yfJ& and switch 1 turns off, but the circuit is turned off. It doesn't do anything, after which the film rewinding ends and the film 3 is spun, maybe 11//7.

When the film is released, the film detection roller /l comes into contact with the narrow part 17 of the spool, and the switch S is turned off. When the switch 8 is turned off, the input signal to the AND area input circuit becomes high level by the input circuits INl and IN. And J which is the other input signal of the AND circuit M
The output signal from the output terminal Q of the K flip-flop FF is also at high level.

Both of the input signals of the AND circuit MU- become ^Irepel, and the AND circuit MU outputs a HI-level signal to OR got, and the OR circuit O- outputs the HI-level signal, that is, the end signal, to the control iin (not shown) terminal T1. Output via .

At the same time, a high level signal is also input to the input terminal KK of the JK flip-flop FF, and the JK flip-flop FF outputs a low level signal from the output terminal Q to the OR circuit 0ζ and the buffer circuits IF4 and BP. On the other hand, the output signal of the output terminal Q of the JY-flip-flop FF is at a low level, and the OR circuit 110R4 outputs a low level signal to the buffer circuit 11F.

Therefore, transistor TR, ? Both terminals are turned off, the power to the motor is stopped, relay L is turned off, switch 8 is connected to terminal T, and the motor is stopped in the film winding state. At the same time, the light emitting diode IJCD for displaying ``film rewinding'' goes out and rewinding is completed.

As explained above, when the film ends, the photocoupler 3j detects that it no longer repeats the on/off output signal and automatically starts film rewinding. Since it is now possible to stop the rewinding operation, there is no need to rewind the film when winding of the film is completed after shooting, which is very convenient. In addition, each operation such as ``Film winding in progress'', ``Film winding completed'', and ``Film winding layer in progress'' is displayed with light emitting lights and audible lights, so you can perform image manipulation with peace of mind.

Next, the first embodiment of the present invention will be discussed.

Fig. 5 is a configuration diagram of the main parts of the camera Kl[jll] of this embodiment, and Fig. 6 is its circuit. In this embodiment, the photo coupler of the first embodiment is used to detect film transport. It uses a sprocket and a switch that turns on and off as it rotates! be.

The automatic four-member mounting according to this embodiment has almost the same mechanism and structure as the automatic 4-member device according to the first embodiment, so it uses different mechanisms, circuits, and and explain its operation. fO is a film transfer detection sprocket fixed to the V shaft 200, and is arranged so that a part of it passes through the perforated ν-nder of the film 3 bow. ν Yahu [gooK] furthermore, the kakuytadotwipkat0 turtle and the cam go'b are fixed, and the rotation of the sprocket 10 drives the kakuytado twisty pgaza 0 turtle, and the cam ttob also rotates at the same time, and the switch is activated. Turn off 8W@. That is, sprocket 5O
1V Yaft 801L, trm tOb, switch 8 bird is the photocoupler 3 of the first embodiment! Performs an action in place of f. Furthermore, in this embodiment, the back 113 of the first embodiment described above is
A switch 8% for detecting the cartridge 33 is provided instead of the switch Sw4 of 9, and if the cartridge 33 is loaded in the camera, the carp will detect that the cartridge 33 is the switch gi.
Press the tip of w, and turn off one switch to start the blank feed, and when it is not loaded, turn on switch iiw, which serves to feed one frame. Next, the differences from the seventh embodiment on the circuit will be described. Photocoupler 33 and transistor T in FIG. 4, which is a circuit diagram of the first embodiment.
&s buffer circuit 11F, instead of AND circuit,
The aforementioned switch sW is provided.

In this embodiment, the sprocket 10 does not move at all unless film is loaded in the camera, so when the back cover 3t is closed without film being loaded, unlike the above-mentioned embodiments shown in the first to Figures, In other words, it is frame-by-frame forwarding, which is faster than when skipping. Also, since the switch turns on and off repeatedly when rewinding the film, the light emitting diode S? It is possible to make it blink seven times.

As explained above, the present invention automatically starts rewinding the film at the end of film rewinding, and automatically stops rewinding the film at the end of film rewinding. This has the effect of eliminating the hassle of pressing the R-button for rewinding, turning the film rewinding crank, turning on the motor, and turning off the motor when film rewinding is completed.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of the main parts of a camera to which the first embodiment of the present invention is applied, FIG. 2 is a perspective view of the switch and SW4, and FIG. 3 is a perspective view of the back cover 3. 5 is a circuit diagram of a circuit constituting the first embodiment of the present invention, FIG. 5 is a main part configuration diagram of a camera to which the second embodiment of the present invention is applied, and 6th @ is a circuit diagram of a circuit constituting the first embodiment of the present invention. FIG. 3 is a circuit diagram of a circuit constituting the embodiment device. 3jSzao, toySW6...- Film transport state detection means l/...Perforation LR:D
,・・・・・・・・・ Display means LED for “Film winding in progress”, --・・・・・・・ “Film □ Winding finished”
Display means LED, ..., "Display means for film rewinding/l...Spool"

Claims (1)

[Scope of Claims] 1. In an electric drive device for a camera that transports film by electric drive, there is provided a film transport state detection means for electrically detecting the film transport state, and a film rewind for detecting the end of film rewinding. end detection means, and when the signal from the film transport state detection means ceases to be in a steady state, the film winding operation is stopped and the film rewinding operation is performed automatically. Film, automatic rewind device. 2. The automatic film rewinding device according to claim 1, wherein the film transport state detection means is means for detecting the movement state of the par 7 fourth legion. 3. Claim 1, which has a display means for displaying "film winding in progress" based on a signal from the film transport state detection means during film winding. Return device. 11. The film automatic according to any one of claims 1 to 3, further comprising display means for displaying "Film winding complete" based on a signal from the film transport state detecting means at the end of film winding. Rewind device. The automatic film rewinding device according to claim 1, further comprising a display means for displaying "Film rewinding" based on a signal from the film transport state detection means during film rewinding. Device. B. The automatic film rewinding device according to claim 7, wherein the film rewinding end detection means is means for detecting that the film is wound around a spool.