JPS584124A - Motor driving device for camera - Google Patents

Abstract

PURPOSE:To make it possible to fit also a flashing device to a motor driving device to be bulit in a camera by attaching terminals for the flashing device to the upper and lower surfaces of the motor driving device. CONSTITUTION:Terminals 51-55 fitted to the bottom surface of a camera and the ones 161-166 fitted to the bottom surface of a motor driving device and connection pins 151-156 fitted to the upper surface of the motor driving device and that 251-256 fitted to the upper surface of a flashing device are constituted by the same nomalized measurements, so that these parts can be upplied to various combination between the camera and motor driving device and between the camera and flashing device in addition to the independent use of the camera and the motor driving device and the flashing device can be also mounted on the camera simultaneously. Therefore, a control signal line is penetrated from the upper to lower parts of the motor driving device.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric drive device for driving film winding of a camera.

This type of electric drive device is usually attached to the bottom of the camera, but in order to use it by adding a grip-type flash device to this electric drive device, conventional methods have been used to remotely control the electric drive device. Connect the cord from the release button provided in the grip part of the flash device to the terminal,
A flash device has been proposed in which the shutter can be released using a release button on the grip of the flash device.

However, with this type of device, two cords are required: an X contact cord connected between the camera and the flash device, and a release cord connected between the flash device and the electric drive device. Especially in continuous shooting with electric winding, which requires rapid shooting performance, the cord gets in the way and makes it difficult to handle the camera as you want. This also caused an accident in which the flash device stopped emitting light.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and provide an electric drive device for a camera that can mechanically attach a flash device and at the same time electrically connect a camera.

In order to achieve this object, the present invention includes a terminal exclusively for the flash device on the top surface to which the camera is attached, and a camera connection side terminal that is directly connected to the camera terminal in the camera electrically sealed state. On the bottom surface to be glued, a flash device connection terminal is provided, which is made up of at least one that corresponds to the camera connection side terminal dedicated to the flash device, and which is arranged in the same arrangement as the corresponding camera connection side terminal, and is connected to the camera connection side terminal. , and the corresponding flash device connection side terminals are connected to each other by a constant current conductive edge inside the device as t/q# image.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments Km, IIc@
Have sex.

1 to 4!11 show a camera system using an electric drive device which is an embodiment of the present invention. ts1 diagram is camera 11
Electric drive device 101 and grip type flash device 20
FIG. 1 is a block diagram of the configuration of FIG.

In camera 1, release button 2 is 2-stage switch 3
It operates. The 2R switch 3 consists of three contact pieces 3a and 3b13c, the contact pieces 3a and 3b actuate the photometry switch SWI, and the contact pieces 3b and 3C actuate the release switch SW.
2, and the contact piece 3b is grounded to the body. Each contact piece 3a, 3b, 3c is electrically connected to the control circuit 4, and an accessory mounting surface 50 which is the bottom surface of the camera 1.
are electrically connected to terminals 51, 52, and 53, respectively. The winding shaft 5 is rotatably supported by a camera housing (not shown), and is connected to a film advance mechanism, a shutter charging mechanism, etc. (not shown) by known means.The lower end of the winding shaft 5 is connected One cover 5a is installed, and a cam disc 5b is fixedly installed at the upper end thereof.

A notch @5c is provided in the cam disk 5b, and when one winding is completed, a claw portion 6a formed at one end of the wind stopper lever 6 engages with the notch 5C to prevent winding. The valley stop lever 6 is rotatably attached to a shaft 7 fixed to the camera housing. The other end 6b of the winding lever 6 is a winding switch S.
When engaged with W3 and the winding is completed, the pawl s6a touches the notch 5C.
When engaged, the winding switch SW3 is turned off, and the winding lever 6 is rotated in the direction of the hour hand by the shutter rear curtain (not shown), and when the pawl @6i is disengaged from the notch s5C, the winding is stopped. Switch SW3 is turned on. That is, the winding switch 5w5-z is kept in the OFF state from the completion of winding to the completion of exposure, and the winding switch 5w5-z is kept in the ON state from the completion of exposure to the completion of the next winding. One contact piece of the winding switch SW3 is grounded to the body, and the other contact piece is connected to the terminal 54 and to the control circuit 4. The X @ point SW4 is connected to the terminal 55, and is also connected to the first contact 8a of the flash device qua-8 and the synchronizer terminal (null 9).The second contact 8b of the flash device quay-8 is connected to the control circuit. 4
When a flash device (not a grip type) is attached to the flash device S&-8, a signal for specifying the aperture value of the lens is transmitted from the flash device. At the same time, the second contact 8b is also connected to the terminal 51C. The female tripod screw 10 is fixed to an accessory mounting surface 50 on the bottom of the camera.

The positioning hole 11 connects the electric drive device 1 to the accessory mounting surface 50.
01 or for positioning when the flash device 201 is attached. Terminals 51 to 54 provided on the accessory mounting surface 50 are common terminals for the electric drive device 101 and the flash device 201, and terminals 55 and 56 are terminals exclusively for the flash device 201.

In the electric drive device 101, 102 is a release button, and 103 is a 2R switch consisting of three contact pieces.
03a1103b is the photometering switch SW 101, contact pieces 103b and 103c are the release switch 5W102,
104 is a control circuit, 105 is a winding shaft, 105a is a winding coupler connected to the connecting coupler 5a of the camera 1, and 112 is a mechanically connecting the winding shaft 105 to a motor M for driving film winding. The gear train 113 is a mounting screw that is screwed into the female tripod screw 10 of the camera 1 to attach the electric drive device 101 to the camera 1, and is rotatably installed in the housing of the electric drive device 101, and has a knob section for operation. 113m, 114 is a positioning bin, 110
111 is a female screw for tripod, and 111 is a positioning hole.

The upper surface 150 attached to the camera 1 has camera connection side terminals 151 to 15 that correspond to the terminals 51 to 56 of the camera l and are directly connected to these terminals 51 to 56 when the camera is attached.
6 is provided.

The bottom surface 160 to which the flashlight 11201 is attached has a camera connection! Corresponds to Yu Xizi 151-156.

Furthermore, the flash device connection side terminals 161~ are arranged in the same arrangement.
166 are provided. And camera connection side terminal 151
~156 and the corresponding flash device m*Confucian terminals 161 to 16
6 means filI! inside the device. They are connected by conducting wires 171 to 176, respectively. Each contact piece 1 of the two-stage switch 103
031.103b and 103c are connected to the camera connection side terminals 151 to 153, and the control circuit 104 is connected to the camera connection side terminals 151.152.154. The camera connection side terminals 151 to 154 are terminals shared by the electric drive device 101 and the flash device 201, and the camera connection side terminal 1
Terminals 55 and 156 are dedicated to the flash device 201.

In the flash device 201, 202 is a release button provided on the grip, and 203 is three contact pieces 203a, 2.
A two-stage switch consisting of 03b%203c, contact piece 203
a, state party switch 5W201 with 203b, contact piece 203
b and 203c constitute a release switch 5W202, respectively. Each contact piece 203 m, 203
b.

203C is a camera l or electric i! Terminals 251-2 provided on the top surface 250 attached to the Km device 101'
53. Terminal 252.254.255,25
6 is connected to the control circuit 204, and the terminal 252 is grounded to the body. The brazed screw 213 is a knob 4213a for operation.
It is rotatably installed in the housing, and has a female tripod screw lO.
or by screwing into the camera l or electric l
b Attach the flash device 201 to the drive device 101. 21
4 is a positioning bin, and 215 is a light emitting section.

2 to 4 show examples of circuits for the camera 1, electric drive device 1101, and flash device 2010, respectively.

In FIG. 2, the same parts as in FIG. 1 are denoted by the same reference numerals and explanations are omitted. B1 is the power supply for camera 1, SWS
is a power switch for the camera 1, and the negative side of the power source B1 is connected to the terminal 52 and, together with b, is grounded to the body as described above.

Reference numeral 21 denotes a well-known m-optical circuit, which is connected to the photometric switch SWI via a diode D1. A terminal 51 is wired from the midpoint between the diode D1 and the photometric switch SWI. Capacitor C1 is a capacitor for driving release electromagnet Mgl, and resistor R1 and diode D2
connected in series with The transistor Tri is for driving the release electromagnet, and is wired in series with the release electromagnet Mgl, and its base is wired with the transistor Tr2 via a resistor R2. The transistor Tr3 is for inhibiting release, and has its emitter and collector connected between the base and emitter of the transistor Tr2, and also includes a resistor R3, a diode D3, and the above-mentioned release switch SW.
21 to ground. A terminal 53 is wired from the midpoint between the diode D3 and the release switch SW2. The base of the transistor Tr3 is wired to a power switch SW5 via a resistor R4, and is also connected to ground via a resistor R5, a diode D4, and the above-mentioned winding switch SW3. Diode D4 and winding switch S
W3 A terminal 54 is wired from this midpoint. Reference numeral 22 denotes an aperture control circuit, which controls the aperture of the lens to an aperture value specified by the flash device via the terminal 56 or the second contact 8b.

In FIG. 3, the same reference numerals as those in FIG. 1 are given to the same reference numerals, and the explanation thereof will be omitted. B101 is an electric drive device 101
The power source 5W105 is a power switch for the electric drive device 101, the negative side of the power source B101 is connected to the terminals 152 and 162, and is grounded to the body as described above. L is a relay coil, which is wired in series. The drive is controlled by the transistor Tr101, and when energized, the switch 5W106 is switched from the NC side to the NC side. The switch ff106 is wired in series with the motor M, and when switched to the NC side, it makes the motor M conductive and also switches the NC
When switching to @, both ends of motor M are short-circuited and the brake is applied. The transistor Tr102 is a winding inhibit transistor, and is wired between the emitter and base of the transistor Tr101, and its collector is connected to the resistor RIOI.
wired to ground through the Transistor Tr I
The base of O2 is connected to resistor 102 and transistor Tr 1
Grounded via 03. The base of the transistor Tr103 is connected to the power switch 5W105 via a resistor R103.
and the aforementioned terminals 154 and 164KE.
It is lined. The switch 5W107 is a continuous GL shooting / frame shooting type changeover switch, and when switched to the C side, continuous shooting, S@
If you switch to , single-frame shooting will be performed. Changeover switch 5W107
The S side contact of is wired to the collector of the transistor Tr103, and its common is connected to the photometric switch 5WI mentioned above.
grounded through OI and connected to terminals 151 and 16.
It is also wired to 1.

In FIG. 84, the same parts as in FIG. B201 is a power source for the flash device 201, 5W205 is a power switch for the flash device 201, and the negative side of the power source B201 is connected to the terminal 252 and is grounded to the body as described above. 221 is a booster circuit, C201 is a main capacitor, C202 is a trigger capacitor, T is a trigger coil, and D201 is a diode, which are arranged Ii1 as shown in the figure. Resistor R201
and the terminal 255 from the midpoint of the trigger capacitor C202.
will be arranged. Xe is a flash discharge tube and is connected in series with the light emission control circuit 222. The light emission control circuit 222 has a light receiving element, and automatically stops light emission when a predetermined amount of light is emitted, and also transmits the aperture value set in the flash device 201 to the camera 1 through a terminal 256. N is a neon tube, wired in series with resistor R202, and connected to main capacitor C2
01, it lights up when a predetermined amount of charge is completed. Terminal 2544 of m description! /I#-)" It is grounded via D202, D2o3 and the transistor Tr201.

The base of the transistor Tr 201 is connected to the power switch ffff via the resistor R202 and the transistor Tr 202.
105 and is grounded via a resistor R2O3. A capacitor 0203 and a transistor Tr203 are wired in a differential column between the base of the transistor Tr202 and the power switch swz05, and are grounded via a resistor 1204. Transistor Tr 2
The base of 03 is resistor R2O5 and resistor P
Grounded via. This phototransistor P receives the light when the neon tube N is turned on and becomes conductive.

The operation of one embodiment of the present invention configured as described above will be explained. First, a case will be described in which photographing is performed only with the camera l without attaching the electric drive device 101 and the flash device 201.

For the explanation, refer to the circuit diagrams of camera 1 in figure K1 and camera l in figure 2.W5! , reveal. Now, when the camera l is in the winding completion state Imm (the state shown in FIG. 1), the claw portion 6a of the winding stopper lever 6 falls into the notch 5c of the cam disc 5b, and the winding switch SW3 is turned off. First, turn on the power switch SW5. When the release button 2 is pushed in, the contact pieces 3a and 3b are short-circuited during the first stroke.
The photometry switch SWI is turned on. Then, in diagram #I2, the photometric circuit 21 becomes energized, so the photometric circuit 21
When the release button 2 is further pressed, contact pieces 3b and 3C are short-circuited by the a12 stroke, and the release switch 1 SW2 is turned on. Then, in FIG. 2, the base current of the transistor Tr2 flows from the resistor R3 to the diode'D3 to the release switch SW2 to the ground, and the transistor Tr2 is turned on. (At this time, the winding switch SW3 is off, so the base current of the transistor Tr3 is also cut off, and the current is O7.) When the transistor Tr2 is turned on, the transistor Trl
Since the release electromagnet Mgl is also turned on, the charge of the capacitor CI falls on the release electromagnet Mgl and is excited, thereby performing the shirt and release electromagnet Mgl. When the exposure is completed and the shutter rear curtain moves, the shutter rear curtain rotates the film stopping lever 6 clockwise, and the pawl s6a comes off from the notch 5C of the cam disc 5b, and the winding switch sw3 is turned on. When the 0 winding switch SW3 is turned on, the base current of the transistor Tr3 flows through the resistor R5-4 diode D4 and the winding switch 5W31 to the ground, and the transistor Tr3 is turned on. Then, the emitter and base of the transistor Trg are short-circuited and turned off, and the transistor Tri also has its base current cut off and turned off, and the release electromagnet Mg
1 is also de-energized. 1. Then, the winding lever (not shown) rolls up the film, etc., and the winding shaft 5 rotates once, and when the winding is completed, the notch 5C of the cam disc 5b
comes to a position facing the pawl g6a of the winding stop lever 6, the winding stop lever 6 rotates in the counterclockwise direction, and the pawl 6a engages with the notch 5C of the cam disc 5b again (at this time, the shutter Since the trailing curtain has already been charged, the winding stop lever 6 can be rotated counterclockwise) and the winding switch SW3 is turned off (as shown in the X-shape in the first figure).

Since the winding switch SW3 is on from the end of exposure until the completion of the next winding, the release electromagnet Mg1 is not excited even if the release button 2 is pressed and the release switch SW2 is turned on. For this flash device:
When connecting a flash device to L-8 or synchro terminal 9 and performing flash photography, release the shutter,
When the shutter front curtain runs, Xf, point SW4 is turned on, glff1 point 8a or synchro terminal 9
The signal is transmitted to the flash device via the flash device, and the flash device emits light. In addition, if the flash device connected to the flash device lever 8 is of the type that can transmit the specified aperture of the flash device to the camera IIIK as described later, the signal is transmitted to the second ff.
It is transmitted via point ii 8b, and the aperture control circuit 22 controls the aperture of the photographing lens to the designated aperture.

Next, a case will be described in which the electric drive device 101 is attached to the camera 1 and photographing is performed. First, electric drive device 101
To attach the camera IK, while inserting the positioning pin 114 into the positioning hole 11, rotate the knob portion 113a of the attachment screw 113, screw the attachment screw 113 into the female tripod screw 10, and fix it. Then, Ruko 153.152.151 on the camera connection side of the electric drive device 11150
．． 154, 156 and 155 are respectively arranged at positions facing the terminals 53, 52, 51, 54, 56 and 55 of the accessory mounting 1trso of the camera 1, so the terminals 53, 153, 52 and 152.51 are 151.54 and 154&
and 55 and 155 are electrically connected. Then, the photometric switch 5w1ot of the electric drive device 101 is connected in parallel to the photometry switch SW1 of the camera 1 via the terminals 51 and 151 and 52 and 152, and the photometry switch SW1 of the electric drive device 101 is
The release switch 5W102 is connected to the release switch SW of the camera 1 via terminals 52 and 152 and 53 and 153.
2 and Km in parallel. Therefore, the release button 2 of the camera 1 and the release button 102 of the electric drive device 1101 can perform exactly the same operation. Here, to simplify the explanation, a case will be described in which the release button 102 of the motor-driven device 101 is used. Now, the camera 1 is in the completed winding state (the state shown in Figure 81), and the changeover switch 5W107 of the electric drive device 101 is on the C side (continuous shooting).
[Suppose there is a switch. First, power switch SW5 of camera l and power switch 5W1 of electric drive device 101.
Turn on 05. In this state, in the circuit of the electric drive device 1010, the winding switch SW3 and the changeover switch 3W107 are off, so the transistor Tr 103 is on, so the transistor Tr 102 is on, and the transistor Tr
i01 is turned off because its emitter 1 pace is short-circuited, the relay coil L is not excited, and therefore the switch 5W106 is connected to the NC side, and the motor M is short-circuited at both ends and is in an inoperative state. It is layered. Then, when you press the release button 102 of the electric drive value [101],
In the first stroke, the photometry δ switch 5WIOI is turned on, and the sightseeing display is displayed as described above. Then, when the release button 102 is further pressed, the release switch 5W102 is turned on in the second stroke, and as described above (the camera 1 is When the release is performed and the shutter rear curtain runs, the winding switch SW3 is turned on.Then, terminals 54 and 1
Since the base of the transistor Tr 103 is short-circuited to the ground via the transistor Tr 103, the transistor Tr 103 is turned off, and the transistor Tr 102 is also turned off. (Since the selector switch 5W107 is switched to the C side, the base current is cut off by turning off the transistor Tr 103.) Then, the transistor Tr 101 is turned on, the relay coil L is excited, and the switch 5W106 is turned to the N side.
Since the switch is switched to the O side, the motor M is energized and when the first film winding is completed, the winding switch SW3 is turned off as described above, so that the transistor Tr is turned off.
103 is turned on, the transistor Tr102 is also turned on, and the emitter and base of the transistor T101 are short-circuited and turned off, and the relay coil L is de-energized.
Swiy f SWI 0.6 is from N0I111 to NcI
Switch to I, short-circuit both ends of motor M, and apply the brake to bring it to a sudden stop. Also, at this time, release button 1
If you keep pressing 02, in the Wc2 diagram, when the top switch SW3 turns off, the transistor Tr3 turns off, and when the short circuit between the emitter and base of the transistor Tr2 is released, the base current becomes the resistance. R3
-4 diode D3 → terminal 53 → terminal 153 → release switch 5W102 → ground and turns on, transistor Trl turns on, so the release electromagnet Mgl is excited again and performs the next shutter release.
Set the selector switch 5W107 of the electric drive device 101 to S@(
- When switching to frame shooting mode), even if the shutter release is finished and the winding switch SW3 is turned on, the metering switch SWI remains pressed while the release button 102 is pressed.
Since O1 is on, the base current of the transistor Tr 102 flows from the resistor R102 to the changeover switch 5W107 to the fence light switch 8W101 to ground, and the transistor Tr
102 continues to be on, and when the release button 102 is released and the photometry switch SW 101 is turned off, the transistor Tr102 is turned off, and the transistor Tr1 is turned off.
01 is turned on, the relay coil L is energized, and winding is started, resulting in a single breast image.

Next, attach the camera 1 (K without the electric drive device 101 installed).
) The case where photographing is performed with the flash device 201 attached will be explained. First, to attach the flash device 201 to the camera IK,
While inserting the positioning pin 214 into the positioning hole 11, rotate the knob portion 213 of the mounting screw 213 to screw the mounting screw 213 into the female tripod thread IOK and fix it. Then, the terminals 253.25, 251. on the top surface 250 of the flash device.
254, 256 and 255 are arranged at positions facing the terminals 53, 52, 51, 54, 56 and 55 in the accessory mounting direction 50 of the camera 1, respectively.
．． 52, 252.51, 251.54, 254.56, 256, and 55 and 255 are electrically connected, respectively. Then, the flash switch 5W201 of the flash device f201 is connected to terminal 5.
The release switch 5W202 of the flash device 201 is connected in parallel with the release switch SW2 of the camera L via terminals 52 and 252 and 53 and 253. connected to. Therefore, the exact same operation can be performed with the release button 2 of the camera 1 (or with the release button 202 of the flash device 201.To simplify the explanation, we will explain the case where the release button 202 of the flash device 201 is used. Camera l has completed winding I!! (1st
It is assumed that the shutter speed is set to the synchronized shutter speed (for example, '10). First, the power switch SW5 and the power switch 5W205 of the flash device 201 are turned on. Then, in FIG. 4, the main capacitor C201 is in a discharge state, so the neon tube N is not lit. Therefore, the phototransistor P is inactive and the transistor Tr 203 is also off. As a result, the transistor /Tr202 is turned on, and the transistor Tr201 is also turned on. Therefore, in FIGS. 2 and 4, even though the winding switch 8W3 is off, the pace current of the transistor Tr3 flows through the resistor R5→diode D4→terminal 54→
Terminal 254 → diode D202-t diode D20
3→Transistor Tr261-+Ground, so
Transistor 'l'r3 turns on and prevents transistor Tr2 from turning on. In this state, even if you press the release button 202 and turn on the release switch 5W202, the 11E4ilt stone Mgl for release will not be excited.
The shutter release cannot be performed.The power switch 5W205 of the flash device 201 is turned on, and the main capacitor C201 is charged with the voltage boosted by the booster circuit 221. When the voltage is charged to a predetermined voltage, the neon tube N is turned on.

Then, the light from the neon tube N is received and the phototransistor P
is turned on, and the transistor Tr203 is turned on.

The transistor 'l'r 202 then becomes its emitter
Since the pins are short-circuited, it is turned off, and the transistor T
r201 is also turned off. Then, the pace current of the transistor Tr3 of the camera 1 is cut off and turned off, and the camera 1 becomes ready for release.

The flash device [201's light emission control circuit 222 is connected to the flash device 2]
The specified aperture value set to 01 is connected to terminals '256 and 56.
The aperture control circuit 22 controls the aperture value of the photographing lens to the specified aperture value using known means. In this state, when you press the shutter release button 202 of the flash device 201, the photometry switch 5W201 turns on with the first stroke, the photometry setting is displayed as described above, and when you press the release button 202 again,
At the second stroke, the release switch 8W202 is turned on, and as described above (the camera l releases the shutter. Then, when the front curtain of the shutter moves, the X contact SW4 is turned on, and the flash The trigger capacitor C202 in the device 201 is short-circuited to ground, the flash discharge tube Xe emits light from the trigger coil TK, and when a predetermined amount of light emission is completed, the light emission is stopped by the light emission control circuit 222.The flash discharge tube Xe emits light. Then f
Since the charge of the f-capacitor C201 is discharged, its potential is 9, and the neon tube N is turned off. Then, the phototransistor P is turned off, and the transistor Tr203 is also turned off. Then, charging of the capacitor 0203 is started, and after a predetermined time determined by the capacitor C203 and the resistor R204, the transistor Tr202 is turned on, and the transistor '
l'r 2014 turns on [and turns on transistor Tr3 of camera 1 again. (This predetermined time is
Synchronized shutter speed after W4 turns on (about 4° seconds)
It is better to make it longer than the time it takes to complete the exposure. ) Camera 1 completes 4 shots at synchronized shutter speed,
When the shutter trailing curtain runs, the winding switch SW3 is turned on as described above. Then, the film or the like is wound up using a winding lever (not shown), and when the next charging of the flash device 201 is completed, the next photographing can be carried out.

Next, a case will be described in which the camera 1 is equipped with the electric l1tl excitation device 101, and a flash device 2014 is further attached to the bottom surface 160 of the camera 1 to take pictures. To further attach the flash device 201 to the electric drive device 161 attached to the camera 1 as described above, set the positioning pin 214 of the flash device 201 at *[1
160, rotate the knob portion 213a of the mounting screw 213 of the flash device 201,
Fix by screwing together the tripod female screw ll0K on the bottom surface 160. Then, the terminal 253.2 on the top surface 250 of the flash device 201
52, 251, 254, 256 and 255 are the terminals 163, 162, 16 on the bottom surface 160 of the electrical solicitation system [101]
Terminals 163, 253, 162, 252,
161 and 251, 164 and 254, 166 and 256, and 165 and 255 are electrically connected, respectively. Then, the secondary light switch 5W201 of the flash device 201 connects terminals 161 and 2.
51.51 and 151.162 and 252 and 52 and 152
Through the side light switch 5w101 of the electric drive device 101
The photometric switch SWI of the camera 1 is connected to the light metering switch SWI of the camera 1. The release switch 5W202 of the flash device 201 is connected to the release switch SW 102 of the electric drive device 101 and the release switch s of the camera 1 via terminals 162.252.52, 152.163, 253, 53 and 153.
w2 and dwarf row K11fi.

Even when the release button 2 of the camera 1 is pressed, the electric drive device 101
Both the release button 102 of the flash device 201 and the release button 202 of the flash device 201 can perform the same operations. Here, a case will be described in which the release button 202 of the flash device 201 is used to reduce the aJl brightness to 1. Now the camera
Assume that the winding is completed (foreshadowing in Fig. 1), and the shutter speed is set to the synchronized shutter speed (for example, '/6d).The selector switch 9Nlor of the electric drive device 101 is set to cis<continuous shooting]. First, the power switch SWs of the camera 1, the power switch 5W105 of the electric drive device 101, and the flash device 2 are set.
Turn on all power switches 5W205 of 01. Then, first, the flash device 201 is activated as described above (main capacitor C20
1 is suitable for a predetermined photoelectric voltage.
r 201 is turned on, and the transistor ``[''r
Turn on 3 to prohibit shutter release. At this time, the terminal 164 is connected to the transistor T in the electric drive device 101.
It is also connected to the base of r103, but the diode D
202 and L) 203 is maintained at approximately 1.4V, the transistor "1" r103 is not turned off, and the motor M is not turned on. Next, when the main capacitor 0201 of the flash device 201 reaches a predetermined voltage, the transistor Tr201 is turned off as described above, and the shutter release is released. In this state, flash equipment [201
When the release button 202 is pressed down, the side light switch 5W201 is turned on with the first stroke, and the photometry and metering are performed as described above.
When the display is displayed and the IJ-Z button 202 is pressed again, the release switch 5W202 is pressed on the second stroke.
is turned on, the camera 1 releases the shutter as described above, the flash device 201 emits light, and the exposure is completed. Then, as described above, the winding switch SW3 is turned on, and the electric plow drive unit [101 is energized as described above (motor M is energized to wind up the film, etc.). Transistor T after time
Turn on r 201 to prohibit shutter release of camera l. When winding of a film or the like by the motor M in the electric drive device 101 is completed, the claw portion 6a of the winding stopper lever engages with the notch w5c of the cam disc 5b as described above, the winding switch SW3' is turned off, and the motor is turned off. Cut off the power to M. At this time, if the charge of the main capacitor C201 in the flash device 201 has already reached a predetermined voltage, the neon tube N
lights up and as mentioned above, the transistor Tr 201 is off, so when the winding is completed, the release button 202 is pressed.
If you keep pressing , winding is completed and [winding switch S]
When W3 turns off, transistor 'fr3 turns off, and as described above (transistor 1'r1 turns on, excites the release electromagnet Mgl, and performs the next shutter release tt. When the winding is completed, the winding switch SW3 turns off. When this happens, the raw capacitor C20 in the flash device 201 is still
When the charging of l has not reached the predetermined voltage, the neon tube N does not light up and the phototransistor D remains off, so the transistor Tr 201 remains on, and the terminal 254 has a voltage of about 1. It can be connected to ground at a potential of 4V. Therefore, in the camera l, the base current of the transistor Tr3 flows through the resistor R5-e diode D4→terminal 54→terminal 154→terminal 164-+terminal 25.
4→ft O)'D202-1/Iode 0203-e
) Transistor Tr 201 → ground and turn off, transistor Tr 3 remains on, shutter release remains prohibited, on the other hand, electric drive device 101Kjd
In this case, the pace of transistor Tr 103 is connected to terminal 16.
4 → terminal 254 → diode D202 → diode D2
03 → Transistor Tr 201 → Connected to ground, but since the voltage at the terminal 164 (that is, terminal 254) is approximately 1.4 V, the transistor Tr 103 is turned on when the winding switch SW3 is turned off, and as described above, the motor M At the same time, both ends of the motor M are short-circuited to bring the motor to a sudden stop. As a result, when the camera IK electric power solicitation device 101 and the flash device 201 are attached and [when performing continuous shooting, the next step is performed as soon as the winding of the film, etc. is completed and the charging of the flash device 201 reaches the predetermined voltage. shutter release is performed.

According to the illustrated embodiment, the camera l is equipped with an electric drive #Ih device 10.
1 or only the flash device 201, it is of course possible to connect directly without using a cord.
When the electric drive device 1014' is installed on the camera 1 and the flash device 201 is attached to the bottom surface 160 of the electric drive device 101, it can be directly connected without using any cord, improving operability. can.

Further, the terminals 51 to 54 of the camera 1 are connected to the electric drive device 101.
Since it is shared by the flash device 201 and the flash device 201, an increase in the number of terminals on the accessory mounting surface 50 of the camera 1 can be minimized.

Furthermore, since the shutter release can be performed from any one of the camera l, the electric drive device 101, and the flash device f1201, operability can be further improved.

In addition, the terminals 51 to 56 of the camera l and the electric drive device ff1
The flash device connection side terminals 161 to 166 of l01 are fixed terminals, and the camera connection side terminal 151 of the electric drive device 101 is used as a fixed terminal.
-156 and the movable terminals 251-256t of the flash device 201, which are biased by the springs, can make good contact between the terminals. However, the structure of the terminal is not limited to this, and may be of a plug-in type, for example.

Electric drive device 101f) The flash device 201 attached to the jE surface 160 does not include a release button 202 and does not transmit a designated aperture value to the camera 1.
If it is limited to the type that receives only the signal from the X contact SW4 from the camera l, the flash device connection side terminal and the short circuit conductor of the electric drive device 101 are connected to the terminal 165 and the short circuit conductor @175.
Only .

As described above, according to the present invention, since the flash device connection side terminal of the electric drive device is connected to the corresponding camera connection side terminal by the shorting conductor inside the device, the electric drive device is attached to the camera, and When the flash device is attached to the electric drive device, the flash device can be mechanically attached by the electric drive device and, at the same time, the flash device can be electrically connected to the camera without using a cord.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a camera system using an electric drive device according to an embodiment of the present invention, FIG. 2 is a circuit diagram of the camera, FIG. 3 is a circuit diagram of an embodiment of the present invention, and FIG. The figure is a one-way diagram of the flash device. 1...Camera, 50-...Accessory mounting surface, 51-56
・・・Terminal, 101・@Φ Electric drive device, 150...
Top, 151-156 parables.・Camera connection side terminal, 160-...bottom, 161-16
6... Terminal for connecting the flash device, 171-176... Short-circuit conduction, 201... Φ flash device, M... Motor. Patent applicant Minoru Nakamura, agent for Canon Co., Ltd.

Claims (1)

[Claims] t In the electric part #IJ device, which is equipped with a motor for driving film winding and is attached to the accessory mounting surface on the bottom of the camera, the top surface that is attached to the camera includes a terminal dedicated to the flash device, and when the camera is attached, it is connected to the terminal of the camera. A flash device that is provided with a camera connection terminal that is directly connected, and that has at least a terminal that corresponds to the camera connection side dedicated to the flash device on the bottom surface to which the flash device is attached, and that is arranged in the same arrangement as the corresponding camera connection terminal. Provide a connection side terminal, and connect the camera connection side terminal and the corresponding flash device connection side terminal.
An electric drive device for a camera, characterized in that each of the devices is connected by a short-circuit conductor inside the device.