JPS61281224A - Electric winding and rewinding camera - Google Patents

Abstract

PURPOSE:To detach and attach the cylindrical cassette very easily by interlocking to the operation of the rear top opening/closing member and shifting the rewinding fork to a standby position. CONSTITUTION:When a rewinding fork operating lever 44 is pressed down, an operating plate 42 in a single body to this pushes a rewinding fork 37. Immediately before the bottom dead point of the lever 44, the rewinding fork 37 is turned in the clockwise direction by the elasticity of a rewinding fork spring 41, and an engaging end part 40a is positioned to the lower order of a claw part 36a. After this, the hands and fingers are separated from a rear top button 60, the button lifts up for the part in which a protrusion 60d shifts the slot part of a rear top lock 62. A protrusion 60c and a relief lever 51 continue to contact, the operating lever 44 holds the position as it does, and the rewinding fork 37 and an engaging claw 36 continue to mutually by the pressuring force by a rewinding fork spring 41. Namely, while the rear top is opened, the rewinding fork part is contacted artificially, and even then, the fork 37 and the engaging claw 36 are returned and held to the engaging position by the pressuring force of the spring 41.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to an electric winding and rewinding camera that winds and rewinds a film in response to forward and reverse rotation of a motor.

(Prior art) The electric winding and rewinding camera (C) winds the film when the motor rotates in the forward direction, and rewinds the film when the motor rotates in the reverse direction. The rewinding fork engaged with the film is rotated.The rewinding fork for rewinding the film is provided protruding into the hatron storage chamber.Therefore, the film can be automatically wound and rewound. Although it is an easy-to-use electric wind-up/rewind camera, there is a problem in that it is cumbersome to attach and detach the cartridge.

(Objective) An object of the present invention is to provide an electric wind-up and rewind camera that allows easy attachment and detachment of a cartridge.

(Structure) The present invention is an electric winding and rewinding camera that winds and rewinds a film by rotating the motor in the forward and reverse directions wjxvc and tl. The rewind fork is provided with a rewind fork that can be selectively positioned in a standby position and a standby position, and in conjunction with the operation of the back cover opening/closing member, the rewind fork is moved to the standby position and held at this position. Hereinafter, the present invention will be described in detail with reference to an illustrated embodiment.

In Figures 1 and 2, a gear 6 fixed to the output shaft 2 of the motor 1, which rotates in the normal direction when winding the filter and reverses when it rewinds, meshes with the gear 5Vc of the reduction gear train 4. The reduction gear train 4 consists of gears 5 to 12,
The gear 12 meshes with a constant rotation gear 16. gear 160
A set cam 15 and a wind end cam 16, which are substantially integral with each other, are supported on the shaft 14VC. The set cam 15 performs a setting operation for a shutter and a quick return mechanism (not shown). set cam 1
A cam follower 17 is in contact with the periphery of the cam 5.

The cam 7 follower 17 is supported by the free end of a lever 19 which is pivotally connected to one end of a set lever 18. The lever 19 is given the habit of swinging counterclockwise about the support shaft 21 by a spring 20Vc. When the gear 16 rotates in the winding direction shown by the solid arrow, the set cam 15 also rotates in the same direction, causing the cam follower 17. The center lever 18 is rotated around the support shaft 22 via the lever 19.

y) The other end of the lever 18 is connected to the shutter and the fink turf mechanism via a link mechanism 5,
Do these sets. When the gear 13 rotates in the rewinding direction indicated by the dashed arrow, the set cam 15 also rotates in the same direction, and the lever 19? However, in this case, the set lever 18 is not allowed to swing.

Incidentally, if a one-way rotation clutch (not shown) is interposed between the shaft 14 and the set cam 15, the cam and the set lever 18 can be connected to each other. Direct engagement is also possible.

The wind end cam 16 has a wind end switch S.
This is a cam that turns WWI on and off. The wind end switch SWw, as shown in FIG. 17(a)', is a parallel switch consisting of the above switch SWwM and a wind end switch SWI which is linked to the movement of the rear curtain of the shutter (not shown). The operation of this switch SWw during photographing is as follows: release - shutter travel ← wind end switch swW1 on -> wind end switch SWwM on - wind end switch 8ww1 off - wind end switch 5ww1 [off].

A gear 23 meshes with the constant rotation gear 13Vc. Hereinafter, the wheel train from the motor 1 to the constant rotation gear 15 (gear 26 in the embodiment) will be referred to as a drive wheel train system. gear 25v
The sun gear 24 is in mesh with c. Shaft 2 of sun gear 24
5VC has an arm 26 rotatably provided. A planetary gear 27 that meshes with the sun gear 24 is rotatably supported on the arm 26 . The planetary gear 27.

]・66a) As shown in VC5i, when the sun gear 24 rotates in the rewinding direction indicated by the dashed arrow, the rewinding driven gear 28
K meshes. At this time, the arm 26 is moved to the stopper 29
al/c (i combination [2. Sun gear 24 is shown in Figure 16 (
When rotating in the winding direction shown by the solid line arrow in b), the arm 26 rotates and abuts against the stopper 29bvc, and the meshing between the planetary gear 27 and the rewinding driven gear 28 is released.

A pulley 60 integrally coaxial with the rewinding driven gear 28 and a gear 61
66 timing belts are wound between the shaft and the coaxially integral grease 32. A rewind fork gear 64 meshes with the gear 31.

The rewinding fork gear 34 is rotatably supported by a rewinding fork shaft 35Vc extending over the IC1 body as shown in FIG. The rewinding fork gear 34Vc is provided with a pair of engagement claws 56,56. The engagement claw 66 has a claw portion 36a formed therein.

A rewinding fork 67 is rotatably inserted through the rewinding fork shaft 55. The rewinding fork 37 includes a fork portion 68 into which a cartridge shaft (not shown) VC is fitted during film rewinding, a circumferential groove 69, and engaging holes 40, 40 into which the engaging claws 56 and 56 are fitted. (only one of which is shown in Figure 1-4) are provided, respectively. The rewinding fork 57 is rotatably supported by the rewinding fork m35Vc by fitting the engagement claws 36, 36 into the engagement holes 40, 40; The angle is regulated by the hole 40 to a certain angle. Hereinafter, the wheel train connected from the rewinding driven gear 28 to the rewinding fork 67 will be referred to as a rewinding wheel train system.

A rewinding fork spring 41 made of a plate spring is provided on one end surface of the fork portion 68 with its base fixed, and abuts against the back portion 36b of the engaging claw 66. Due to the action of this spring 41, the rewinding fork 67 and the rewinding fork gear 64 are urged toward each other in a direction in which the claw portion 36a collides with the engagement edge 40a (see Figure 4) of the engagement hole 40. ing. The claw portion 36a and the engaging edge portion 40a engage and disengage, and the operation thereof will be described later.

The arm portion of the rewind fork operating plate 42 is loosely fitted into the circumferential groove 39 of the rewind fork 670. The actuating plate 42 is a member that pushes down the rewinding fork 67, and is guided by a guide 111143 formed on the body so as to be movable up and down without rotating. The operating plate 42 includes a rewinding fork operating rod 4.
One end of 4 is fixed.

The rewinding fork operating rod 44 is as shown in Figure 1, 1?5.
It is supported by guide parts 46 and 47 provided on the body 45 so as to be vertically movable. The operating rod 44 has an extensible spring 49 interposed between the spring stopper 48 and the guide portion 46.
Its elasticity gives it the habit of upward movement.

Therefore, the fork portion 68 of the rewinding fork 67 is moved by the spring 49 into the cartridge storage chamber (not shown).
This means that the movement habit is given in the direction of protruding towards the target.

In Fig. 5, a relief lever 51 is rotatably attached to the first operating lever 44Vc by a stepped screw 50, and the lever is given a counterclockwise rotational habit by a spring 52Vc. This habit is caused by one end of the lever
1a is regulated by colliding with the operating rod 44. The elasticity of the spring 52 is the same as the one end 51 of the release lever 51.
bK When a downward force is applied, the release lever 51 is set to be sufficiently large relative to the elasticity of the spring 49, and the release lever 51 is rotated only after the downward movement of the operating rod 44 is restricted by the fixed member. It will start moving. body 4
5 is connected to a fixed contact 5 via an insulator 56 (see Figure 7).
4 is fixed. One end of this fixed contact 54a VC
The bent ends 55a of the movable contacts 55 face each other so as to be able to approach and separate. The movable contact 55 is connected to a guide groove 56 formed in the body.
(See Figure 7) K is guided and fixed to a slidable contact piece seat 57. A conductive tension spring 59 is connected between one end 55b of the movable contact 55 and a terminal 58 fixed to the body.
The hook is extended, giving the contact 55 the habit of moving in the direction of breaking contact with the fixed contact 54. Figures 5 and 7 show both of the contacts in a closed state. The fixed contact 54 and the OJ moving contact 55 constitute a back cover switch SwB.

In Figure 5, reference numeral 60 indicates a back cover button as a back cover opening/closing member, and is provided to be slidable in the vertical direction by a back cover and a body (not shown). The back cover button 60 has a protrusion 60a.

60b, 60c, and 60d are provided. Between the protrusion 60a and the recess 45a of the body, an elastic back cover button push spring 61 is loaded, and the back cover button 60
is biased upward. Between the push spring 61 and the spring 59, the elasticity of the spring 61 is set to be much larger. The engagement piece 57a of the contact piece seat 57 of the movable contact 55 engages with the protrusion 60bVc. One end 51b of the release lever 51 is located below the protrusion 60C so as to be able to engage with the protrusion.

The protrusion 60d fits into the elongated hole 62a of the back cover lock 62. The back cover lock 62 includes a locking pawl 62b that engages with a back cover mold 66 (not shown) fixed to the back cover, and a locking stepped portion 45b formed on the body 45.

An engaging portion 62c that selectively engages with 45C is formed. The back cover lock is slidable relative to the body and is also swingable around the protrusion 60d into which the elongated hole is fitted. At one end 62d of the back cover lock 62,
The free end of a leaf spring 64 whose base end is tightly fitted into the recess 45d of the body 45 is engaged, giving the back cover lock 62 a clockwise swinging habit.

Figure 5 shows a state in which the back cover is locked, and at this time, the back cover lock 62 is under the action of the pressing spring 61.
The engaging portion 62c is engaged with the locking stepped portion 45b. Further, the movable contact 55 is pushed by the protrusion 60b Vc, and as shown in FIG.
is closed. The rewinding fork operating rod 44 is caused to stick out by the elasticity of the spring 49 as shown in the rewinding fork 37Y>9 figure. When the operating rod 44 is pushed down, the rewinding fork 67 is held at a lowered standby position, as shown in FIG. When the actuating rod 44 is pushed down, the actuating plate 42 integrated with the actuating rod 44 moves to the rewinding fork 67.
lower. Engagement pawl 6 loosely fitted into engagement hole 40
Since the rewinding fork spring 41 is elastically abutted against the back part 36b K of 6, the rewinding fork 67 rotates slightly clockwise due to the elasticity of the spring, and the engaging edge 40a
is located below the claw portion 36a. After this, the operating rod 4
When the pressing force on the rewinding fork 67 is released, the claw portion 36a and the engaging edge portion 40a engage with each other under the force of the spring 490, thereby holding the rewinding fork 67 in the standby position. This standby position is a position in the cartridge storage chamber where the rewinding fork 67 is lowered so as not to engage with the cartridge shaft.

In Figure 2, the gear 6 fixed to the lower end of the hoisting shaft 65
6 meshes with a gear 67. Gear 67 is gear 26
It meshes with the coaxial gear 68vc.

As shown in Figures 2, 11, and 12, the hoisting shaft 65 is provided with a constant torque clutch mechanism 69, a school friction mechanism 70, and a one-way coupling mechanism 71.

The constant torque clutch mechanism 69 prevents the film from tearing and detects the end of the film. Clutch upper 7 integrally attached to the upper end of the hoisting shaft 65
The lower end surface 72a of 2 is formed in a radial chevron shape (
・Ru. The lower end surface 72a and the complementary shaped upper end surface 73a
A lower clutch 75 having a lower clutch 75 is rotatably inserted and supported by the hoisting shaft 65K. The lower clutch 75VC has a tooth portion 75b with a long tooth width that meshes with the intermediate gear 74, and a spring bearing portion 75.
c is formed. The lower clutch 76 is brought into pressure contact with the upper clutch 72 by the elasticity of the elastic pressure contact spring 75, with their chevron-shaped end surfaces meshing with each other. The pressure contact spring 75 is connected to the constant torque clutch mechanism 69
and is used in common for each configuration of the spool friction mechanism 70. A clutch switch SwK is arranged below the spring receiving part 73c at a position where it is activated when the lower clutch 76 moves downward. A rewind button /76 corresponds to this clutch switch SWK, and when rewinding the film midway through, pressing this turns on the switch SWK.

In Figure 2, Figure 0, Figure 11, and Figure 12, the flange 65a (shown only in Figures 3 and 12) of the winding shaft 65 indicates that the spool transmission washer 77, which is rotatably fitted into the shaft, is connected to the pressure contact spring 75. The spool is pressed into contact with the spool through a friction washer 78 which is subjected to the elastic force of the spool. The pressure contact spring 75.
Washers 77 and 78 constitute a spool friction mechanism 70, which transmits the rotation of the winding shaft 650 to the spool, which will be described later, via frictional force.

The one-way coupling mechanism 71 is disposed between the winding shaft 65 and the lure lure 9, and is a mechanism that transmits only the rotation of the winding shaft 650 during winding up to the lure lure 9. The sedge lure 9 is a cylindrical body made of rubber or a rubber-like material and has a high friction surface, and is substantially integral with the inner cylinder 80. This inner cylinder 80
A driven member 81 is integrally and securely fitted to the VC.

As shown in Figure 11 and Figure 31714, the driven member 81 has a hole 81a that fits into the winding shaft 65, and a pair of engaging recesses 81b formed with a phase of 180° around this hole. , 81b, a claw support 82 supported by columns 81c, 81c, claw support shafts 82a, 82a hanging down from the support, and a relatively weak spring 83. One-way pawls 34 and 84 biased at 83 are provided, respectively. The engaging portion 84a of the one-way type 84 has a voltage of 5VC, as clearly shown in Figure 216.

It has entered the engagement recess BibK, and is brought into engagement with the engagement step 81dlC by the elasticity of the spring 86.

On the other hand, a pair of transmission pieces 77a of the spool transmission washer 77
, 77a extend downward so as to be engageable with the engaging portion 84a. Then, as shown in Figure 14, the winding shaft 65
When rotates counterclockwise (winding direction) VC, the transmission piece 77a rotates in the same direction via the school friction mechanism 70 and engages the one-way pawl 84, so that the engaging portion 84a,
The engagement of the engagement step portion 81d causes the guru 9 to rotate in the upward direction. When rewinding the film, the winding shaft 65 rotates clockwise at 5Vc as shown in Figure 15, and the transmission piece 77a also rotates in the same direction.
7a collides with the back part 84b of the one-way claw 84, causing the claw to swing in the direction of escape against the elasticity of the spring 86.
There is no need to rotate the spool 79. In addition,] F15
In the figure, the one-way type back portion 84b and the transmission piece 77a are shown separated from each other for convenience of illustration. In the illustrated embodiment, the one-way coupling mechanism 71 includes a spool transmission washer 77, a driven member 81. Although it is composed of a one-way claw 84 and the like, the winding shaft 65 only rotates when winding the film. Any configuration may be sufficient as long as the information is transmitted to the lure 9, and the configuration is not limited to the illustrated embodiment.

In Figure 2 again, the intermediate gear 74 has a sprocket gear 86 fixed to the sprocket 85 @ 85a K.
They are engaged. A film feed detection cylinder 87, which is rotated by the side edge of the film, is rotatably inserted into and supported by the shaft 85a. The detection tube 87 has a protrusion 87a on its curved surface. On the rotation locus of the protrusion 87a,
A film feed signal switch SW8 is arranged,
It is turned on and off as the detection cylinder 870 rotates when the film is fed.

The sprocket 85 is configured to receive rotation from the constant rotation gear 16 so as to feed the film (not shown) by one frame when the constant rotation gear 13 rotates once.

Hereinafter, the gear train from the gear 26 to the sprocket gear 86Vc will be referred to as a hoisting wheel train system.

Further, the rotation speed ratio is set so that the film winding speed of the spool 79 is always higher than the film feeding speed of the sprocket 85, and the difference is caused by the film being pulled up by the spool friction mechanism 70. It is designed to be tightly wound around the school. - During rewinding, the driving force from the gear train is not transmitted to the spool 791C as described above, so the film to be rewound is smoothly unwound from the spool. Also, the total number of rotations of the sprocket 85 required to feed the entire film is nl.
When the total number of rotations of the rewinding fork 37 required to tightly wind the entire film is N2, the rotational speed ratio of the sprocket and the rewinding fork N1:N2 is N1/N2.
The gear ratios of the winding train system and the rewinding train system are set so that 2≧B1/N2.

Further, the cartridge storage chamber is provided with a cartridge detection switch SW (see Fig. 17 (a)) for detecting whether or not a cartridge is attached to the camera. In Figures 7 and 8, the position of movable contact 1 is determined depending on whether or not a cartridge is loaded in the cartridge storage chamber, and if it is not loaded, it is indicated by a solid line with respect to movable contact 55c. in a evacuated position;
If loaded, cartridge detection switch sv
r is located at the position of the broken line where it is closed.

As described above, by configuring the so-called back cover switch and the cartridge detection switch SW,
In addition to establishing the systems shown in Figures 17 and 18, the system described below can also be adopted. That is, the movable contact 100 is grounded, the fixed contact 54 is set to 81g, and the switches SWl and llJ are set to turn on only when there is a cartridge and the lid is closed. By doing this, the camera movement "playful auto-load" in Figure 16 is eliminated, and when switches SW and B are off, the system is exactly the same except that it is always played with play auto-wind. becomes.

It is also connected to the sprocket 85, and when winding, it adds one frame advance in response to one frame advance of the film, and when rewinding, it subtracts or is referred to as "S" below the initial state C5)
V′c! J is set, and when the back cover is opened (-F3J
With the operation of the film counter being reset,
A counter switch 5W0 (see FIG. 17(a)) is provided to distinguish and detect the two states of "S..." and "1-66" of the film color/color.

Further, although the details will be described later, an alarm mechanism (see Figure 17(a)) that emits sound or light in response to a control signal is provided.

The operation of the camera of the present invention constructed as described above will be explained for each operation with reference to Figure 16, Figure 17 (a), and Figure 18 (middle and 6).

film loading Turn on the power switch SWD.

As shown in Figure 5, when the back cover button 60 is pressed down with fingers against the elasticity of the push spring 61, the protrusion 60d pushes the back cover lock 62 downward. Since the back cover lock 62 is given a swinging behavior by the leaf spring 64, the engaging portion 6
2c and the locking stepped portion 45b are disengaged from each other, and when pushed at the point 10, it swings clockwise [-], as shown in Figures 1 and 6.
The engaging portion 62c engages with the locking step portion a5c. Protrusion 60
d abuts against the lower edge of the long hole 62a as shown by the chain line when pressing down the back cover button 60.
Pressing action to ? When stopped, the button 60 is moved upward by the action of the push spring 61 and held in the position shown in Figure 76. Due to the sliding and rocking of the back cover Roncro 2,
The engagement with the back cover mold 66 begins to be released.

When the protrusion 60b moves as shown in Fig. 6 by pressing the back cover button 60, the v-clinging contact 55, which has been locked to the protrusion 60F) to close the back cover switch SWB, will now move. As shown in FIG. 16, the projection 60b t/i: follows due to the elasticity of the spring 59. Movement of the back cover switch SWB is stopped when the stopper portion 57b of the contact side 57 abuts the end face VC of the guide portion 47.

At this time, the bent end 55a of the movable contact 55 and the fixed contact 54
The one end 54a is spaced from each other as shown in Figures 2 and 6 and Figure 8. That is, the back cover switch SW is turned off. Along with the opening operation of the maker, the film color/reset is reset to 5Jvc, and the counter switch SW0 is turned off.

When the sudden deafening C is moved by pressing the back cover button 60, one end 51b of the release lever 51 engages with the protrusion.
Push down the rewinding fork operating rod 44 against the spring 49Vc. Even if the operating rod 44 reaches the bottom dead center, the protrusion 6Dc moves further downward, but this movement, as shown in Fig. a-6,
Due to the swinging of the relief lever 51, no signal is transmitted to the operating rod 44. At the timing when the release lever 51 starts swinging, the back cover mold 66 is completely released from the back cover lock 62.

When the rewinding fork operating rod 44 is pushed down, the operating plate 42 integrated therewith pushes the rewinding fork 67.

When the operating rod 44 is in the raised position V':@, the rewinding fork 67 protrudes as shown in FIG. ing. ] - In the state shown in Fig. 9, when the actuating plate 42 is pressed down, the 5th rewinding fork 67 is lowered.

Immediately before the bottom dead center of the operating rod 44, the rewinding fork 37 is rotated clockwise by the elasticity of the rewinding fork spring 410, and as shown in FIG. It is located below the claw portion 56a. After this, when the finger is released from the back cover button 60, the button is moved to the protrusion 6.
0c3 rises as much as it moves through the elongated hole of the back cover lock 62. Then, the protrusion 60c and the release lever 51 continue to contact each other, the operating rod 44 maintains the same position 1, and the rewinding fork 67 and the engagement pawl 66 are engaged with each other by the pressing force of the rewinding fork spring 41Vc. Keep coming together. That is, even if the rewinding fork portion is manually touched with the back cover open, the fork 67 and the engagement pawl 66 are returned to the engagement position by the pressure force of the spring 41. In other words, the rewinding fork 67 is held at the standby position ffK. Therefore, since the rewinding fork does not protrude from the bottom of the cartridge storage chamber, the cartridge can be taken in and out smoothly.

After opening the auto-start back cover (not shown) and attaching the cartridge, pull out the film to near the spool 790 position and close the back M. When the cartridge is attached, the movable contact 100 and the contact 55c come into contact, and the cartridge presence/absence detection switch 5WF (see FIG. 17(a)) is closed.

In Figure 6, when the back cover is closed, the back cover type 66
collides with one side edge 62d of the back cover lock 62, causing it to swing counterclockwise against the spring 64. This swinging causes the lid lock 62 to move between the locking step portion 45c and the engaging portion 62.
c is disengaged and moved upward by the elasticity of the push spring 61. The upward movement is prevented by the engagement between the engaging portion 62c and the locking step portion 45b, but at this point, as shown in FIG.
6 to lock and hold the back cover in the closed position.

When the back cover button 60 is raised, the protrusion 60c also moves, but as described above, the rewind fork 37 is held at the lowered standby position.

When the protrusion 60b moves due to the rise of the back cover button 60, the movable contact 55 of the 5IC is moved by the spring 59 as shown in Figure 5.
Push up against the vc to bring the bent end 55a of the contact into contact with one end 54a of the fixed contact, and then press the back cover switch 5WB.
(See Figure 7) is closed.

When the back cover switch SWB is closed, the inverter NV
The output of 1 becomes high level (hereinafter referred to as rHJ5)K.

At this time, if the film counter is "SJ" and the counter switch SWo is off, then the idle circuit AND 2
The output of the OR circuit becomes HVc, and the output of the OR circuit ORI becomes HK. Since the output of inverter INV is H, the output of NAND circuit NANDI becomes low level (hereinafter referred to as rLJ), transistor Tr is turned on, and relay RL
1 is turned on and its contact RL1. switches to the dashed line position,
The motor 1 rotates forward in the winding direction (in the direction of the solid arrow in Figure 2).

By 10 rotations of the motor, the reduction gear train 4. The driving wheel train system including the constant rotation gear 13 and the hoisting wheel train system connected thereto rotate in the direction of the solid line arrow (see FIG. 2), and the spool 79. Rotate each of the tin rockets 85 to wind the film until the film counter reaches "11".

When the film counter reaches "1" and one frame of film reaches the shooting position, the counter switch SW0 is turned on, the output of the AND circuit AND2 becomes L, and the output of the OR circuit ORI becomes L, causing the NAND circuit to turn on. The output of NANDI becomes HK, transistor Tr1 is turned off, and relay RL is turned off.
I is turned off, motor 1 is stopped, and film winding is stopped. When the KM switch SWB is closed, the number of frames on the film is in the shooting position and the film color is
If it is not "S", the counter switch SWo has been on from the beginning, so the motor 1 remains stopped and the film is not wound. This completes the autoloading of the film, and all that is left to do is press the release button.
Here, we will discuss the action of the drive force transmission system to the cartridge.

It has already been mentioned that the rewinding fork 67 is held at the standby position when loading the cartridge. In Figure 2, the rotation of the motor 1 is transmitted to the sun gear 24 via the drive wheel train, causing it to rotate in the direction of the solid line arrow. But 1
, 1-3 (b), the planet gear 27 meshing with the sun gear 24 moves away from the rewinding driven gear 28, so the gear 28 is not rotated. That is, by providing the planetary gear mechanism, the transmission of driving force to the unwinding wheel train system, which is completely unrelated to the winding operation, is cut off. However, immediately after the start of the winding operation, the planetary gear 27 is meshed with the unwinding driven gear 28,
Rotate this. However, the rewinding driven gear 281C is transmitted from the sun gear 24 via the planetary gear 27.
Timing belt 56. The rewinding fork gear 64 rotated by the gear 61 engages the claw portion 36a and the engagement step portion 4.
0a rotates in the engaging direction, so the standby position is maintained.

During film winding, the planetary gear 27 and the rewinding driven gear 28
It is only for a very short time that they come into contact with each other.

Therefore, by providing two mechanisms, the planetary mechanism and the automatic rewinding fork protrusion mechanism, energy loss during film winding can be suppressed.

If only a planetary mechanism is provided, the rewinding wheel train will be rotated by the film during winding, and if only the rewinding fork automatic protrusion mechanism is provided, the rewinding wheel train will be rotationally driven during winding. This results in an increase in load and energy loss. Even if winding is started with the rewinding fork 37 protruding due to an abnormal operation, the planetary gear 2
7, the rotation speed v3 rotated by the rewind driven gear 28 through the film-rewind fork 67 is smaller than the rotation speed v4 caused by the sun gear 24rc (with respect to the sun gear 24, the rewind driven gear 28 is relatively ), the planetary gear mechanism operates normally, cutting off the drive to the rewinding wheel train and preventing the film from being reversely wound or stretched as described above.

Autostart (failure) This is the operation when the film fails to lock onto the spool and winding is not performed.

Similarly to the above, if there is no film feed signal even after time t has passed since the motor 1 started rotating in the winding direction, in other words, the film feed detection cylinder 87 (see Figure 2) does not rotate. and stops motor 1. That is, the camera back switch s'wB is on, the film feed signal switch 8w8 is off, and the output of the inverter INV4 is Ll'.
(Since the cartridge presence detection switch SWF is on and the output of the AND circuit AND3 is L,
The output of the OR circuit OR2 becomes L. On the other hand, the output of the inverter NV8 is H, and the AND circuit AND4
Since K is input, the pulses from the pulse generator PG pass through the AND4 and OR circuit OR6'f and are counted by the counter CA. counter CA,
CB and CC constitute a timer with a time limit of t1.12 and 13, and the output of the counter CA becomes HIC after tl time from the start of counting. At this time, the back cover switch SWB is turned off and the inverter INV is turned off.
Since the output of the AND circuit AND 7 is H, the output of the AND circuit AND 7 becomes H, and the alarm is turned on to issue a warning of layer failure. This alarm may be an audible alarm or a light alarm.

When the camera back is opened according to the winding (autoload) failure alarm, the output of the inverter INV1 becomes L due to the camera back switch SWB turning off, and the AND circuit AND7
The output becomes L and the alarm is turned off. Next, after reloading the film into the spool, the back cover is closed, and the auto start operation described above is returned to.

When the autowind autoload is successful and the release button is pressed, the release switch SWR is turned on, the output of AND1 becomes H, and the shutter is driven by the release AE circuit REVc. Then, the wind end switch 5ww1 is turned on when the shutter trailing curtain finishes running. By turning on the wind end switch SWw, the output of the inverter INV3 becomes H, the output of the OR circuit ORI becomes H, the output of the NAND circuit 115 NAND1 becomes L, the transistor Tr1 is turned on, the relay RLI is turned on, and the motor 1 is wound up. Have the child say once in the direction.

Then, the constant rotation cam 16 (see figure 2) rotates once,
Along with charging the shutter and quick return mechanism, sprocket 85? : Rotate and feed one frame of film. This allows the wind end switch Sww
is turned off, and the inverter INV.

The output becomes L. At this time, counter switch SWo
is on, the output of the AND circuit AND2 is L, the output of the OR circuit 0RIQ is L, and the NAND circuit NAND1
The output becomes H, transistor T is turned off, and motor 1 is stopped.

This autowind is repeated every time the release button is pressed until the end of the film is detected.

Film End Detection When the film winding progresses and the load torque of the spool 79 increases until it becomes impossible to wind it any further, in other words, the load torque of the spool 79 increases to a point close to the torque that breaks the film, the lower clutch 75 resists the elasticity of the spring 750, It moves downward along the slope of the chevron-shaped facing surfaces 72a and 73a with the upper clutch 72, and transmits the driving force between the film winding [il[1165] and the sprocket 85. (See Figure 12)
. In Figure 3.2 and Figure 12, the lower clutch 76
When the clutch switch SWK moves, the clutch switch SWK is closed.

When the clutch switch SWK is turned on, the inverter
The output of V5 becomes H, and the output of OR circuit OR5 becomes H.
Vr, it becomes. Here, since the output of the counter CC is L and the output of the inverter INV6 is H, the NAND circuit NA
The output of ND2 becomes O, and the NAND circuit NAND3,
Flip-flop FF consisting of NAND4 is set and its output becomes HVc. This flip-flop F
The H output of F is output as a film end signal.

Further, when the voltage of the power source E drops, the clutch mechanism cannot be operated and the motor 1 stops even if the wind end switch SWw is on. In this case, and also when the sprocket tears the film, a film end signal is output. That is, the film feed signal switch SW3 is turned off, the output of the inverter NV4 becomes LVc, and the output of the film feed signal switch SW3 becomes LVc.
wR is on and the output of the AND circuit AND3 is L.
Since the output of the AND circuit AND 8 is L, the outputs of the OR circuits OR2, OR5, and OR4 become L, and the reset inputs of the counters CA, CB, and CC become L. In addition, the output of the inverter N'v8 is H and is input to the AND circuit AND4, and the counter switch SWo is on, and the inverter Nv2
The output is H. Therefore, the pulses from the pulse generator PG are applied to the AND circuit AND4. It passes through AND5 and is counted by counter CB, and after t2 time from the start of counting, the output of counter CB becomes H, and the output of OR circuit OR5 becomes H. At this time,
Since the output of the counter CC is L and the output of the inverter INV6 is H, the output of the NAND circuit MNAND2 becomes L, the flip 7'70 FF cassette is inserted, and the film end signal is output.

When the auto rewind film end signal is output, the inverter INV
The outputs of , become L, turning on the transistor Tr□, turning on the relay RL2, and turning on its contact, RL2-1, to reverse the motor 1 in the rewinding direction.

In Figure 2, when the motor 1 rotates in the rewinding direction indicated by the dashed arrow, the constant rotation gear 13 rotates in the rewinding direction.
Rotate the sun gear 24 in the direction of the broken line.

When the sun gear rotates 240 times, the planet gear 27 rotates as shown in Figure 6 (a).
As shown in the figure, the rewind driven gear 28 is rotated to mesh with the rewinding driven gear 28, and then rotated. The rotation of the rewind driven gear 28 is controlled by the timing belt 63. Rewinding fork gear 64 via gear 61
is rotated in the rewinding direction shown by the dashed arrow (see Figures 2 and 10). In Figure 10, rewind fork 371C
is 1 working rod 44. A frictional force is exerted by the actuating plate 42 biased by a spring 49 (see Figure 5). Since this frictional force is larger than the pressing force by the rewinding fork spring 41, the rotation of the rewinding fork gear 640 causes the rewinding fork spring 41 to bend.

Therefore, when the rewinding fork gear 64 rotates to an angle at which the claw portion 36a and the engagement edge 40a are disengaged, the rewinding/rewinding 7 oak 37 is activated by the actuating plate 42 which is biased by the spring 49. It protrudes as shown in Figure 9. The protrusion of the rewinding fork 67 is regulated at the top dead center of the operating rod 44 whose movement is restricted by the body 45.

The protruding rewinding fork 37 fits into engagement with the cartridge shaft. The rewinding fork 37 at the position where it engages with the patrone shaft is not subjected to any frictional force due to the actuating plate 42, and the driving force from the rewinding fork gear 64 is transmitted without any loss.

On the other hand, the 10 rotations of the motor are also transmitted to the hoisting shaft 65 via the driving wheel train system and the hoisting wheel train system, and the coaxial shaft 65 and sprocket 85 are unwinding as shown by the broken line arrow (see Figure 2). Rotation of the winding shaft 650 in the unwinding direction also rotates the constant torque clutch mechanism 69 and spool friction mechanism 70, but there is a one-way connection between the winding shaft 650 and the school 79 on which the film is wound. Due to the existence of the mechanism 71, zero is not transmitted to the spool 79. That is, as shown in Figure 15, when the winding shaft 65 rotates in the unwinding direction, the transmission piece 77a of the transmission washer 77 also rotates in the same direction. However, since the one-way pawl 84 swings inwardly around the pawl support shaft 82a, the rotation of the hoisting shaft is not transmitted to the school.

In this state, when the motor rotates 10 times, the sprocket 85 rotates to feed the film in the rewinding direction, and the rewind fork 67 rotates the cartridge shaft to rewind and store the film in the cartridge. At this time, the spool 79 rotates following the film fed by the sprocket 85.

Furthermore, since a one-way mechanism is provided between the constant rotation gear 150 and the set cam 15 (see Figure 2), the rotation of the constant rotation gear 150 in the rewinding direction is not transmitted to the set system of the shutter and quick return mechanism. Not done.

The total number of revolutions of the tin rocket 85 required to feed the entire film is nl, and the rewinding fork 67
When the total number of rotations is n2, the rotation number ratio N
: Since the gear ratio is set so that N is N/N2≧nl/n2, in the first half of the film rewinding operation, the film feed per unit time by the sprocket 85Vc is less than that by the rewinding fork 37. Since the amount is larger than the winding amount, the film fed by the sprocket is slowly wound around the cartridge shaft. and,
In the second half of the rewinding operation, the cartridge shaft, which is wound thicker, takes up a larger amount of film than the film feed amount by the sprocket 85, so as the film becomes thicker, the film starts to be tightened. Almost at the same time when the sprocket finishes feeding the entire film, the tightly wound film is rewound and stored in the cartridge.

Midway rewinding operation This is an operation when rewinding the film before reaching the end of the film. In this case, the rewind button 76 (see Figure 2)
Press to turn on clutch switch SWK.

When clutch switch SWK is turned on, inverter I
The output of V5 is H, the output of OR circuit OR3 is H, and at this time, the output of counter CC is L and inverter voltage Nv
Since the output of 6 is H, the output of NAND circuit NARD2 is high, the output of NAND circuit NAND3 is H, and the output of inverter I NV is low, so that transistor T
r□, - Relay RL2 turns on and rotates motor 1 in the rewinding direction. The rewinding operation after the motor 1 starts reverse rotation is the same as the auto-rewinding operation described above.

As described above, one clutch switch SWK is used for both auto rewind and midway rewind.

Auto rewind end The entire film is stored in the cartridge with the auto rewind operation. At this time, the output of the NAND circuit NAND3 is H
So, from the pulse generator PG to the AND circuit AND6? :
The counter CCVC Hals is turned on through the switch, and the film feed signal switch SW8 is turned off to turn off the impa-tae Nv4.
Since the output of the AND circuit AND8 is L, the output of the OR circuit OR4 is L, and the counter CC counts the input pulses from the AND circuit AND6. The output of the counter CC becomes H after t5 hours from the start of counting, and the output of the inverter I NV6 becomes LK.
Become. Then, the output of the cant circuit NAND2 becomes H, the flip-flop FF is reset, the output of the inverter INV7 becomes H, the transistor Tr7 is turned off, the relay RL2 is turned off, and the motor 1 is temporarily stopped. When the output of the inverter INV7 becomes HVc, the back cover switch SWB is on and the counter switch SWo is off, and the output of the AND circuit AND2 is H and the OR circuit O
Since the output of R1 is H, the output of the NAND circuit NANDI becomes LVc, turning on the transistor Tr1 and turning on the relay RL.
1 turns on and motor 1 rotates forward. This motor 1
The film is wound up by the forward rotation of , and the shutter and quick return mechanism are set to the standby position. When the film counter changes from rSJ to 1 during film winding and the counter switch SWo turns on, the AND circuit AND2
The output of the NAND circuit becomes LVc, and the output of the NAND circuit NAND1 becomes H.
K, transistor Tr and relay RLI turn off, and motor 1 stops. Also, when the film is rewound, the film counter becomes rSJ and the counter switch SWo
When OFF, the output of the AND circuit AND2 becomes HK and the output of the inverter INV8 becomes H, so the pulse from the pulse generator PG is sent to the AND circuit AND4.
The counter CAK is inputted through the counter CAK. Here, the cartridge presence detection switch SWF is on and the AND circuit AND
5 is L, the feed signal switch SW8 is off, the camera back switch SWB is on, and the output of the OR circuit OR2 is L. Therefore, the counter CA counts the input pulses and after t1 time (before the counter switch Swo is turned on, the output becomes HVc, and since the camera back switch SwB is on, the output of the AND circuit AND7 becomes H, and the alarm AM is activated. indicates the end of film rewinding.In other words, the "auto start" and "auto load failure" systems are used as a warning system for the end of film rewinding.

In this example, the back cover is opened when the alarm store's alarm is activated, making it easy to use.

When the back cover button/6G is pressed by recognizing the alarm, the back cover switch SwB
is released and the alarm stops. In conjunction with the pressing of the back cover button 60, the back cover opens, and the rewinding fork 67 is lowered to the standby position shown in Figure 10 by the operating rod 441 and the operating plate 42vc, and is maintained at the position shown in FIG. .

Next, Patrone? After taking out the cartridge from the cartridge storage chamber, turn off the power switch 5Wll (see Figure '3P17 (a)). At this time, since the rewinding fork 67 is lowered to the standby position and held there, it is extremely easy to take out the cartridge.

In this camera, it is possible to perform a pseudo photographing operation, that is, an operation similar to that when film is loaded, even if no film is loaded.

Figure 17 (a) On a VC, even if there is no cartridge (film), when the back cover is opened and the release button is pressed to turn on the wind end switch SWwI, the motor 1 will rotate forward.The conditions at this time are , the back cover switch SWB is off, the wind end switch SwWI is on, and the clutch switches swK and a5 are off.When the wind end switch 5ww1 is turned off, the rotation of the motor 1 due to this play stops.The conditions at this time , back cover switch SWB is off, wind end switch 5ww1 is off, clutch switch SWK
is off.

On the other hand, when the back cover is closed, the back cover switch SWB is turned on and the so-called counter switch is turned on. is off, clutch switch SWK is off, motor 1 rotates forward, counter switch SWo is on, wind end switch SwwI
is off and clutch switch swK is off, motor 1 will stop and play autoload will end.

If the cartridge is not loaded and the cartridge presence detection switch SWF is off, the feed signal switch 5W
8Vc pulse (pulse that occurs only during film feeding) is turned off via inverter Nv4 Figure 1!g
Instead of being input to OR2 and OR5, the pulse generator P
A pulse generated in G regardless of film feeding is passed through an AND circuit AMD5 to an OR circuit OR2.

Since the signal is input to OR5, the motor 1 is controlled and the alarm function is operated in the same manner as when loading the cartridge, and winding and rewinding operations are performed.

In addition, in FIG. 17(a), the symbol SWA indicates an initial reset switch.

(Effects) As described above, according to the present invention in which the rewinding fork is moved to the standby position and held at this position in conjunction with the operation of the back cover opening/closing member, the rewinding fork moves into the cartridge storage chamber. Since there is no protrusion, the cartridge can be attached and detached extremely easily.

[Brief explanation of the drawing]

Figure 1 is a block diagram showing the configuration of the electric winding and rewinding camera of the present invention, Figure 2 is a partially cutaway perspective view showing the main parts of the same, Figure 3 is a plan view showing the planetary gear mechanism, Figure 4 is a An exploded perspective view of the rewinding fork mechanism, Figure 5 is a front view showing the camera back locking mechanism and its surroundings, Figure 6 is an operational view of the same as above, OFF diagram is a side view of the camera back switch SWB, Figure 8 is the same as above. action diagram,
Figure 9 is a perspective view showing the protruding position of the rewinding fork. spear 1
Figure 0 is an operational view of the same as above, and is a perspective view showing the standby position;
Figure 11 shows a constant torque clutch mechanism, a spool friction mechanism, and a spool friction mechanism installed between the film winding shaft and the spool.
Figure 12 is an exploded perspective view showing the one-way coupling mechanism, Figure 12 is a vertical sectional view of the same essential parts, Figure 13 is a front view of the one-way coupling mechanism,
Figure 4 is a plan view when the same film is wound up, Figure 15 is a plan view when the same film is unwound, Figure 16 is a flowchart showing motor control, Figure 17 (a) is a circuit diagram of the same,
Figure 17 (b) is a circuit diagram showing a modification of the above, Figure 18 is a time chart of the same, and Figure 19 is a plan view showing a tin rocket, film, and rewinding fork. DESCRIPTION OF SYMBOLS 1... Motor, 24... Sun gear, 27... Planetary gear, 34... Rewinding fork gear, 67... Rewinding fork, 60... Back cover opening/closing member, 65... Hoisting shaft, 69... Constant torque clutch mechanism, 70... Spool friction mechanism, 71... One-way connection mechanism, 79
...Spool, F...Film, SW,...Patrone presence/absence detection switch, SwB...Back cover switch. Figure No. 3 ((1) (b)
%4 diagram 5 diagram 6 million diagram

Claims (1)

[Claims] In an electric winding and rewinding camera that winds and rewinds the film in response to forward and reverse rotation of the motor, the film can be selectively placed into a protruding position where it engages with the cartridge shaft and a standby position where it does not engage with the cartridge shaft. An electric winding and rewinding camera characterized in that the rewinding fork is provided with a rewinding fork that is moved to the standby position and held at this position in conjunction with the operation of the back cover opening/closing member. .