JPS5928020B2 - Souchihontight chakudatsukanounadenchi case - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a battery case that can be attached to and detached from an apparatus main body with one touch.

In devices that use small power sources such as dry batteries, the battery case must be securely fixed mechanically and securely electrically when installed, and must not be easily removed when disconnected. No.

For this reason, in conventional devices, a space is provided to store the battery case inside the device, and when storing the battery case, the first
As shown in the figure, the battery case 101 is placed in the storage space 102.
It was stored by moving in the direction of the arrow, and when taking it out, it was pulled out in the opposite direction of the arrow. However, in this conventional method, the battery dozen is only moved in one direction, so it has the disadvantage that the moving distance is long and it is difficult to handle. In particular, in the battery case of the electric drive device of a camera, the grip of the electric drive device has traditionally been used as a storage space, so as shown in Figure 1, the storage space is on the outside of the battery case, so the shape is As it gets bigger,
Since the battery case is attached and detached by moving only in one direction, it is difficult to attach and detach the battery case, which has the disadvantage of impairing the portability and quick-shooting ability of the camera. As mentioned above, conventional battery cases have various drawbacks, but the present invention aims to provide a new device main body and a removable battery case that solve these drawbacks of conventional battery cases. Its purpose and its characteristics! In order to prevent the battery case from coming off when it is installed, restraining members are provided at two places on both ends of the battery case, so that the battery case is securely fixed to the installation body when it is installed, and the battery only moves a short distance when it is removed. A means for making it possible to remove the battery case from the device main body simply by moving the case, and for guiding the battery case so that it is removed in a direction perpendicular to the direction in which the battery case is pulled out when the battery case is removed from the device main body. By providing this, it is possible to easily remove the battery case when the A is removed. Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 2 and 3 are diagrams showing a combination of a camera and an electric drive device. First, with reference to FIGS. 2 and 3, a method of coupling the camera to the electric drive device and a method of coupling the electric drive device body to the battery case will be described. 1 is a camera, and 2 is an electric drive device, and this electric drive device 2 is composed of an electric drive device main body 3 and a battery case 4.

5 is a protective cover that covers the hole 6 on the bottom of the camera when the electric drive device is not in use.

7 is a storage space in which the protective lid 5 is stored when the electric drive device is used.

8 is a tripod screw hole for the camera, 9 is a mounting screw for the electric drive device, 10 is a positioning hole for the camera, and 11 is a positioning pin for the electric drive device.

Reference numeral 12 denotes an engagement hole in the main body of the electric drive device, which engages with a convex portion 13 that is a restraining protrusion on the battery case.

14 is a concave groove that engages with a guide rail 15 that is a restraining protrusion of the battery case.

Reference numeral 16 is an operating knob that can be slid in the direction of arrow a, is biased in the direction opposite to arrow a by a spring 18 (see Figure 4), and engages with the end 17 of the main body of the electric drive device. .

19 is a guide surface of the main body of the electric drive device, and 20 is a guide surface of the battery case.

Pl and P2 are terminals for connecting the power supply battery B of the electric drive device to the main body of the electric drive device, and the terminals Pl and P2 are connected to the electrodes of the power supply battery B through the power supply opening 4a of the battery case. (See Figure 4). To connect the camera 1 configured as described above and the electric drive device 2, first remove the protective cover 5 at the bottom of the camera and remove the storage space of the electric drive device body.

By screwing the mounting screw 9 into the tripod screw hole 8 while inserting the tripod into the tripod screw hole 8, the electric drive device is attached to the camera as shown in FIG.

Then, the camera winding coupler 21 and the electric drive device winding coupler 22 are mechanically connected, and the camera side terminals P3 and P5, which will be described later, are electrically connected to the electric drive device side terminals P4 and P6, respectively. Ru. Next, the electric drive device main body 3
To attach the battery case 4 to the battery case, slide the battery case in the direction of arrow b while aligning the guide surface 20 of the battery case with the guide surface 19 of the electric drive device body. As the battery case is slid in the direction of arrow b, the convex portion 13 of the battery case first enters the engagement hole 12 of the electric drive device body, and then the guide rail 15 of the battery case engages with the groove 14 of the electric drive device body. After the engagement hole 12 and the protrusion 13 and the groove 14 and the guide rail 15 are engaged, when the battery case 4 is further slid in the direction of the arrow b, the oblique side 16a of the operation knob 16 is brought into contact with the end of the electric drive device main body. In order to overcome the portion 17, the operating knob 16 slides while moving in the direction of arrow a against the spring 18, and finally, the operating knob 16 engages with the end 17 of the electric drive device main body, thereby removing the battery case 4. The installation of the electric drive device into the main body 3 of the electric drive device is completed (the state shown in FIG. 4). Next, in order to remove the battery case 4 from the electric drive device main body 3, first push the locket portion 16c of the operating knob 16 in the direction of arrow a with your finger, so that the operating knob 16 and the end portion 17 of the electric drive device main body are connected. Release the engagement. Next, when the battery case 4 is slid in the direction opposite to arrow b, the groove 14 of the electric drive device body and the guide rail 15 of the battery case are first disengaged, and then the electric drive device body is disengaged. The mating hole 12 and the convex portion 13 of the battery case can be disengaged from each other. When the battery case 4 is again slid in the direction opposite to the arrow b, the oblique side 20a of the guide surface 20 of the battery case and the oblique side 19a of the electric drive device main body
As a result, the battery case 4 comes off in the direction of arrow c. By performing the operations described above, the battery case 4 is removed from the electric drive device main body 3.

FIG. 4, FIG. 5, and FIG. 6 are diagrams and circuit diagrams showing the internal structure of the electric drive device. The configuration, circuit configuration, and operation of the mechanical section of the electric drive device will be described with reference to FIGS. 4, 5, and 6. Note that the same members as in FIGS. 2 and 3 will be described using the same symbols. First, the fourth
The structure of the mechanism of the electric drive device will be described with reference to the drawings and FIG. 5. M is a drive motor, and a bevel gear 23 made of plastic is attached to the output shaft M1 of the motor.

A metal ring 24 is provided on the outer periphery of the bevel gear 23, and the ring 2
4, the bevel gear 23 and the motor output shaft M1 are fixed with screws 25. 26 to 31 are gear trains, and 32 is a one-way clutch, which transmits driving force only in the direction in which the motor M winds the film of the camera 1.

33 is a winding shaft, and the above-mentioned winding coupler 22 is attached to the upper end of the winding shaft.
will be installed.

34 is a base plate that supports the motor M and the gear trains 26 to 31.

35 is a printed board, and the part 36 surrounded by the two-dot chain line
The electrical circuit components explained in FIG. 6 are arranged.

S1 is a main switch, and D1 is a light emitting diode for indicating the end of the film, both of which will be explained in FIG. Next, the circuit configuration of the electric drive device will be described with reference to FIG. 6. Reference numeral 37 is a camera control circuit, which includes a photometry circuit, a shutter release circuit including an electromagnet, an exposure control circuit, and the like.

The control circuit 37 of this Q camera is described in detail in the previously filed Japanese Patent Application No. 49-42449, so the explanation will be omitted here. S2 is the camera release switch, and when the winding is completed and switch S2 is turned on,
The shutter release electromagnet in the camera control circuit 37 operates to release the camera shutter. S3
is the changeover switch. When the shutter release is completed and the trailing curtain runs, it switches from side A to side B, and when winding is completed, it switches to side B.
Switch from side to a side. B' is the camera battery, P3 to P6 are the terminals explained in FIG. 2, and D1 is the aforementioned light emitting diode. D2 to D5 are diodes, R1 to R8
is a resistor, C1 to C3 are capacitors, Trl, Tr2
is an NPN transistor, Tr3 is a PNP transistor,
RL1 is a relay coil, and 11 is a relay switch. M is a motor, S1 is the main switch of the electric drive device mentioned above, and B is a battery of the electric drive device. The operation of the electric drive device configured as described above will be explained.

Assuming that the camera has completed its winding operation, the changeover switch S3 has been switched to the a side. In this state, when the camera release switch S2lC is closed, the camera control circuit 3
7 is activated, and a shutter release is performed by a release electromagnet (not shown). When the shutter release is completed and the rear curtain runs, the changeover switch S3 is switched from the a side to the b side, and the potential at point B decreases via terminals P3 to P6, and the potential at point C also decreases. Since the current flowing through the resistor R2 charges the capacitor C1, no current flows through the resistor R3 and the transistor Trl is turned off. A current flows to the base of the transistor Tr2 through the resistor R4, turning the transistor Tr2 on, and a current flows through the transistor Tr3, the resistor R6, the transistor Tr2, and the resistor R7, turning the transistor Tr3 on and turning the relay coil R on.
Current flows through Ll. Capacitor C2 and resistor R8 are a circuit that smoothes the current flowing through relay coil RLl and prevents the relay from chattering. When current flows through relay coil RLl, relay switch 11 switches from side a to side b, current flows through motor M, and motor M rotates. The rotation of the motor M is transmitted to the camera-side winding coupler 21 through the gear train 23, 26 to 31, the one-way clutch 32, the winding shaft 33, and the winding coupler 22, thereby winding the film.

When the film winding is completed, the changeover switch S3 is switched from the b side to the a side, and the potential at point B increases and the transistor T
r3, resistor "R" Since the current that was flowing through transistor Tr2 and resistor R7 no longer flows, transistor Tr
3 is in the off state, no current flows through the relay coil RLl, the relay switch 11 is switched from the b side to the a side, and the back electromotive force of the motor M flows through the diode D5, causing the motor M to suddenly stop. When the motor M suddenly stops, the gear train 23
, 26 to 31 are also stopped, but the winding shaft 33 rotates beyond a predetermined angle due to the inertial force of the gear train, resulting in an overload being applied to the winding cover 21 of the camera. This overload is caused by the reaction force of the torsion of the hoisting shaft 33, etc., which rotates the gear trains 23, 26 to 31 and the motor M in the opposite direction to the direction used during hoisting. When the motor rotates in reverse, no brake is applied to the motor, so the overload can be completely removed. If the release switch S2 is kept closed when winding is completed, the shutter release is performed again when the changeover switch S3 is switched from the b side to the a side, and continuous shooting can be performed. Further, if the release switch S2 is open when winding is completed, all operations are completed when the changeover switch is switched from side b to side a, and one frame photography can be performed. When all the film has been shot, the shutter release is completed and the motor M
Even if the switch rotates, the film cannot be wound, and therefore the changeover switch S3 remains switched to the b side.

In this state, the potential at point B is low, so the transistor Tr
3. Resistor R Current continues to flow through the transistor Tr2 and the resistor R7, and the motor M becomes locked. At this time, the capacitor C1 continues to be charged through the resistor R2, and the potential at point C gradually rises, and eventually the transistor Trl turns on. Then transistor Tr2
Since the voltage between the base and emitter of becomes low, the transistor Tr2 turns off, and the base current of the transistor Tr3 stops flowing, so the transistor Tr3 turns off, and no current flows through the relay coil RLl, and the switch 11 switches to the b side area a side. The motor M then releases the locked state. When the potential at point B of the unidirectional light emitting diode D1 is low and the transistor Tr3 is off, a current flows through the light emitting diode D1, the diode D2, and the resistor R1 and emits light, but even if the potential at point B is low, the transistor Tr3 is on. Then, the potential difference between point E and point D is approximately 0.6V due to the voltage drop of diode D3 and transistor Tr.
The voltage drop of 3 is about 0.1, which is only about 0.7 in total, and the applied voltage required for the light emitting diode D1 to turn on is about 1.4V.
Since this is not the case, the light emitting diode D1 does not turn on. In other words, the switch S3 switches to the b side and the transistor Tr3
is turned on and the film is not wound even when the motor M is energized, and after a time determined by the resistor R2 and capacitor C1, the transistor Tr3 is turned off and when the motor is no longer energized, the light emitting diode D1 is turned on. This allows you to know that all of the film has been shot. As described above, according to the present invention, the electric drive device main body and the battery case can be attached and detached with one touch, so the time required for battery replacement can be shortened, and the shutter release can be avoided during battery replacement work. This is especially effective in cold regions where not only the number of opportunities is reduced, but also the battery is consumed a lot, it is easy to warm up the spare battery and attach it to the main body of the electric drive device just before photographing.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a conventional example, Fig. 2 is an embodiment of the present invention, a perspective view showing a coupled state of an electric drive device and a camera, Fig. 3 is an exploded perspective view of the same, and Fig. 4 is an electric drive Equipment storage space
5 is a sectional view showing the inside of the electric drive device, and FIG. 6 is a circuit diagram. 1: Camera, 2: Drive device, 3: Drive device body, 4
: Battery case, 5: Protective lid, 7: Storage space, 21,
22: Winding coupler, M: Motor 1, 23: Bevel gear, 2
6-31: Gear train, 32: Clutch, 33: Hoisting shaft, 3
7: Control circuit, S1: Main switch, S2: Release switch, S3: Changeover switch, D1: Light emitting diode, D2-D5: Diode, C1-C3: Capacitor, Trl; Tr2: NPN transistor, Tr3: P
NP transistor, RLl: relay coil, B: power supply, 101: battery case, 102: storage space, 4a:
Power supply opening, 12: Engagement hole, 13: Convex portion as first restraining protrusion, 14: Concave groove, 15: Guide rail as second restraining protrusion, 16: Operation knob, 18: Spring, 19
: Guide surface of device main body, 19a: Oblique side portion, 20: Guide surface of battery case, 20a: Oblique side portion.

Claims (1)

[Claims] 1. An opening for a power supply terminal in the battery case, a guide surface that guides in one direction when attaching and detaching from the device main body, a first restraining protrusion at one end of the battery case, a second restraining protrusion at the other end of the battery case,
Engagement holes and grooves that receive the first and second restraining protrusions to restrain the battery case when installed, and are provided in the battery case so as to be slidable under a spring force, and are engaged with the end of the device main body when installed and are pressed against the spring. An operation knob that is allowed to detach from the device main body by being pressed against it, and an oblique portion that imparts a tendency to detach in a direction perpendicular to the one direction when guided in the one direction in the detachment allowed state. A battery case that is detachable from the device main body, characterized in that the battery case is provided on the guide surface.