JPS58145928A - Motor-driven winding and rewinding camera - Google Patents

Abstract

PURPOSE:To enable perfect automatic winding and rewinding without requiring artificial operation by providing a one-way linking mechanism between the winding shaft and spool, and transmitting rotation of the winding shaft to the spool when winding and cutting off transmission when rewinding. CONSTITUTION:A one-way linking mechanism consisting of a transmission washer 77 linked with a spool shaft by friction, a driven member 81 which is formed in a body with the spool, and one-way claw 84 energized by a weak spring 83 is contained in the inner case of the spool allowing engagement of the transmission piece 77a of the washer 77 and claw 84. When the transmission piece 77a is turned left by rotation of the spool shaft 65, it is engaged with the claw 84 and rotates the member 81, consequently the spool, in the direction of winding. When rewinding, the transmission piece 77a rotates in reverse direction and is contacted by pressing with the back of the claw 84 and swing it in the direction of releasing. Consequently, the spool does not rotate. Thus, fully automatic winding and rewinding can be effected without requiring any artificial operation.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a camera that winds and rewinds film electrically.

A so-called electric winding and rewinding camera in which the film is wound up and rewound using a motor has already been proposed and put into practical use.

However, even though film winding and rewinding have been motorized, manual operations are still required to rewind the film after winding the entire length of the film. One of them is an operation for disconnecting the rotational transmission between the drive system, the sprocket, and the spool during rewinding, and connecting the drive system and the rewinding system. That is, when rotating the cartridge to rewind the film, it was necessary to separate the spool from the drive system.

In other words, in the conventional electric winding and rewinding camera, since some operations must be performed when rewinding the film, it cannot be said that the film is completely automatically wound and rewinded.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electric winding and rewinding camera that eliminates the need for an artificial operation to separate the rotational transmission between the drive system and the spool when rewinding the film.

It is an object of the present invention to provide a one-drive winding and rewinding camera that winds and rewinds film in response to forward and reverse rotations of a motor. This is achieved by an electric upper rewinding camera characterized in that the rotation of the upper shaft reaches the spool Kfi and is provided with a one-way coupling #I that cuts off rotational transmission between the winding shaft and the spool during rewinding.

According to the present invention, when the spool is rotated during film rewinding, the rotational transmission between the spool and the winding shaft is cut off by the action of the one-way connection d4, so that no artificial movement is required. The rewinding operation can be performed even if the above is not performed. In other words, it is possible to provide a camera in which the film winding and rewinding operations are completely automated.

In addition, by incorporating the one-way connection mechanism inside the spool, it does not occupy the installation space for other mechanisms (
, the above objectives can be achieved.

Hereinafter, the present invention will be explained in detail with reference to an illustrated embodiment.

In FIGS. 1 and 2, a gear 3 fixed to the output I/2 of a motor 1, which rotates in the forward direction during film winding and reverses during rewinding, meshes with gear 5r of a reduction gear train 4. . The reduction gear train 4 consists of gears 5 to 12, and the gear 12 is engaged with the constant rotation gear 13. gear 13
A center cam 15 and a wind end cam I6, which are substantially integral with each other, are supported on the shaft 14. The set cam 15 is used to set a shutter and a quick return mechanism (not shown). A cam follower +7 is in contact with the periphery of the 7-nod cam 15. This cam 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 around a support shaft 21 by a spring 20. When the gear 16 rotates in the winding direction indicated by the solid arrow, the seven-throated cam 15 also rotates in the same direction, causing the set lever 18 to rotate around the support shaft 220 via the cam follower 17° lever 19.

The other end of the setter/<-18 is connected to the 7-Year and quick return mechanism via a link mechanism,
Perform these seven steps. When the gear +3 rotates in the rewinding direction indicated by the dashed arrow, the set cam 15 also rotates in the same direction, swinging the lever 19 via the cam follower 17, but in this case, the set lever 18 does not swing. It is designed not to. Note that if a one-way rotation clutch (not shown) is interposed between the shaft 14 and the set cam 15, the cam and the hit lever 18 may be directly engaged.

The wind end cam 16 has a wind end switch S.
This is a cam that turns Wwill on and off. As shown in FIG. 17, the wind-end switch SWw is a parallel switch consisting of the switch SW- and a wind-end switch swI which is linked to the running of the trailing curtain of the shuttle (not shown). The operation of this switch SWw during shooting is as follows: release → shutter travel → wind end switch SWw
I on → wide/wind end switch SW l on → wind end switch sww, t oso → wind end switch SW - off.

A gear 23 meshes with the constant rotation gear 13.

Hereinafter, the wheel train from motor 1 to constant rotation gear +3 (gear 26 in the embodiment) will be referred to as a drive wheel train system.

A sun gear 24 meshes with gear X-23. An arm 26 is rotatably provided on the sun gear 24. A planet gear 27 that meshes with the sun gear 24 is rotatably supported on the arm 26. As shown in FIG. 3(a), the gear 27 meshes with the driven gear 28 when the sun gear 24 rotates in the unwinding direction indicated by the dashed arrow.
It collides with a. When the sun gear 24 rotates in the winding direction shown by the solid arrow in FIG. 3(b), the arm 26
rotates and aligns 1+11 with the stopper 29b, and the planetary gear 2
7 and the rewinding driven gear 28 are released.

A pulley 30 integrally coaxial with the rewinding driven gear 28 and a gear 31
A timing belt 33 is wound between the pulley 32 and the coaxial pulley 32. The rewinding fork gear 34 meshes with the gear 61d.

As shown in FIG. 4, the rewind fork gear 34 is rotatably supported by the rewind fork l[j135, which is the same type as the body. The rewinding fork gear 64 is provided with a pair of engagement claws 3 (S, 56).The engagement claw 66 is formed with a claw portion 36a.

A rewinding fork 37 is rotatably inserted through the rewinding fork shaft 35. The rewinding fork 67 includes a fork portion 38 that fits into the cartridge shaft (not shown) during film rewinding, a fork portion 38 that fits into the cartridge shaft (not shown), an engagement hole 40 into which the engagement claw 36, 56 is fitted, and 40 (only one is small in FIG. 4) are provided respectively. The rewinding fork 37 is rotatably supported on the rewinding fork shaft 35 by fitting the engagement claws 36, 36 into the engagement holes 40, 40; It is regulated to a constant angle by the engagement hole 4°. Hereinafter, the wheel train connected to the rewinding driven gear 28 and the rewinding fork 67 will be referred to as a rewinding wheel train system.

A rewinding fork spring 41, which also serves as a leaf spring, is provided on one end surface of the fork portion 38, with its base fixed, and the back portion 36bK of the engaging claw 36 is fixed. I'm here. Due to the action of this spring 41, the rewinding fork gear 67 and the rewinding fork gear 34 are moved toward each other in such a direction that the claw portion 56a abuts against the engagement edge 40a (see FIG. 4) of the engagement hole 40. energized. The claw portion 36a and the engaging portion 1 (edge portion Qa) are engaged and disengaged, but the action is νR later.

5) The arm portion of the rewinding fork 1'lf motion plate 42 is loosely fitted around the periphery I439 of the 2-/oak 37. The actuating plate 42 is a member that pushes down the rewinding fork 37,
It is guided by a guide shaft 43 of the same type on the body so as to be movable up and down without rotating. One end of a rewinding fork operating rod 44 is fixed to the operating plate 42 .

As shown in FIG. 5, the rewinding fork operating rod 44 is supported by guide portions 46 and 47 provided on the body 45 so as to be vertically movable. A spring stopper 48 is attached to the operating rod 44.
The elasticity of an extensible spring 49 interposed between the guide portion 46 and the guide portion 46 allows upward movement. Therefore, the rewinding fork 37 is given the ability to move in the direction of projecting the fork portion 3B into the cartridge storage chamber (not shown) by the spring 49.

In FIG. 5, a release lever 51 is rotatably cut out on the operating rod 44 by a step 1/f72 of 5 degrees, and the lever is rotated counterclockwise by a spring 52. is given. This behavior is regulated by one end 5ILL of the lever abutting against the operating rod 44. The elasticity of the spring 520 is the result of applying a downward force to one end 51b of the release lever 51.

The release lever 51 is set to be sufficiently large relative to the elasticity of the spring 49, and the release lever 51 begins to rotate only after the downward movement of the operating rod 44 is restricted by the single leg member. A fixed contact 54 is fixed to the body 45 via an IF8 edge 53 (see FIG. 7). A movable contact 55 is connected to one end 54a of the fixed contact if? song 4i
55a face each other so as to be able to approach and separate. The movable contact 55 is guided by a guide groove 56 (see FIG. 7) formed in the body and fixed to a slidable contact seat 57. Movable contact 5
A conductive tension spring 59 is hooked between one end 55b of the contact 55 and a terminal 58 fixed to the body, and the tension spring 59 is connected to the contact 55 in the direction of cutting off the contact with the fixed contact 54.
It gives the movement habit of ＼. FIGS. 5 and 7 show the closed position 41V with both of the contacts closed. The fixed contact 54 and the movable contact 55 constitute a back cover switch SW8.

In FIG. 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.

lb, 60c, and 60d are provided. Between the protrusion 60a and the recess 45a of the body, an extensible back cover push spring 61 is loaded, and the back cover button 60 is pressed.
・\It is energized. The push spring 61 and the spring 59 are
The elasticity of the spring 61 is much thicker (the setting is coarser). The engagement piece 574 of the contact seat 57 of the movable contact 55 engages with the protrusion 60b. e, one end 51t of the relief lever 51 is engaged with the protrusion "-1f".
It is located at XQ.

The protrusion +50+1 is fitted into the elongated hole 62a of the back cover lock 62. This back cover lock 62 includes a locking claw 62b that engages with a back cover claw 63 fixed to the back cover (not shown), and a locking claw 62b that selectively engages with locking steps 45b and 45c formed on the body 45. The engaging portion 62c is formed.

The back cover lock is slidable relative to the body, and is also swingable around the protrusion 60d having an enlarged elongated hole. One end 62 (1) of the back cover lock 62 is engaged with the free end of a leaf spring 64 whose proximal end is firmly fitted into the recess 45d of the body 45,
It gives a clockwise rocking habit.

FIG. 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 step portion 45b.

Moreover, the movable contact 55 is pushed by the protrusion 60b,
As shown in FIG. 7, the back cover switch swBt is closed. The rewinding fork operating rod 44 causes the rewinding fork 37 to protrude as shown in FIG. 9 due to the elasticity of the spring 49. When the operating rod 44 is pushed down, the rewinding fork 37 is held in a lowered standby position, as shown in FIG. 10. When the operating rod 44 is pushed down,
An actuating plate 42 integrated therewith lowers the rewinding fork 57.

Since the rewinding fork spring 4I is elastically abutted against the back part 36b of the engagement claw 36 that is loosely fitted into the engagement hole 40,
Due to the elasticity of the spring, the rewinding fork 37 is rotated slightly clockwise to position the engaging edge 40a below the claw portion 36a. Thereafter, when the pressing force on the operating rod 44 is released, the claw portion 36a and the retaining edge portion 40m engage with each other due to the elasticity of the spring 49, and the rewinding fork 57 is held at the standby position. This standby position 1 is a position in the cartridge storage chamber where the rewinding fork 37 is lowered so as not to engage with the cartridge shaft.

In FIG. 2, the gear 6 fixed to the lower end of the hoisting shaft 65
6 meshes with a gear 67. Gear 67 is gear 23
It meshes with a coaxial gear 68.

The hoisting shaft 65 is provided with a constant torque clutch mechanism 69, a spool friction mechanism 70, and a one-way coupling mechanism 71, as shown in FIGS. 2, 11, and 12.

The constant torque clutch mechanism 69 prevents the film from tearing and detects the end of the film. Lower clutch 72 integrally attached to the upper end of the hoisting shaft 65
The lower end surface 72a is radially formed in a chevron shape. The upper end 1fr73a having a complementary shape to the lower end surface 72a
A lower clutch 73 having a lower clutch 73 is rotatably inserted and supported by the hoisting shaft 65. The lower clutch 73 is formed with a tooth portion 73a having a long tooth width that meshes with the intermediate gear 74, and a spring bearing portion 73b. The lower clutch 73 is moved against the upper clutch 72 due to the elasticity of the elastic pressure contact spring 750.
Their chevron-shaped end surfaces are engaged and pressed against each other. The pressure contact spring 75 is used in common with the configurations of the constant torque flanch machine #169 and the tin 2-f 92-f 3-f machine 1117o. A flanch switch sWK is arranged at a position where it is activated when the lower part 76 moves downward.A rewind button 76 corresponds to this clutch switch swK, and when rewinding is performed midway through, this clutch switch sWK is operated. Press IIa
When you press J, switch swK turns on.

2, FIG. 11, and FIG. 12, a spool transmission washer 77 rotatably fitted onto the winding shaft 65 (shown only in FIG. 12) is connected to a press-contact spring 75.
Spool friction side/washer 7 receiving the elasticity of
8, and are pressed into contact with each other. Above IF, contact spring 75
, 7 gears 77, 78 and spool friction mechanism 70
The rotation of the winding shaft 65 is transmitted to the spool, which will be described later, via the winding shaft 65.

The one-way connecting rock 41171 has a winding shaft 65 and a spool 79.
[1! This is a mechanism that transmits only the rotation of F to the spool 79. Spool 79 is a cylindrical body made of rubber or a rubber-like material with high friction surfaces and is substantially integral with inner cylinder 80 . A driven member 81 is integrally and securely fitted into this inner cylinder 80 .

As shown in FIGS. 11 and 14, the driven member 81 has a hole 81a that fits into the hoisting shaft 65, and a hole 81a that fits into the hoisting shaft 65.
A pair of cohesive four parts 81 formed with a phase of 180°
b, 81e), a pawl support 82 supported by columns 81C, 81C, and a pawl support shaft 82m hanging down from the support.
, 82a, and a one-way pawl 84. which is rotatably supported on this shaft and biased by relatively weak springs 83.83. ″8
4 are provided respectively.

As clearly shown in FIG. 13, the engaging portion 84a of the one-way claw 84 enters the engaging recess 81b, and is brought into engagement with the engaging stepped portion 5Iatic by the force of the spring 83.

On the other hand, a pair of transmission pieces 77a of the spool transmission washer 77
, 77m extend downward so as to be able to be engaged with the engagement portion 84m. As shown in FIG. 14, when the winding shaft 65 rotates counterclockwise (winding direction), the transmission piece 77a rotates in the same direction via the spool friction mechanism and engages the one-way pawl 84. The engaging portion 84a and the engaging stepped portion 81
6 rotates the spool 79 in the upward direction. When rewinding the film, the winding shaft 65 rotates clockwise as shown in FIG. 15, and the transmission piece 77! L also rotates in the same direction, but in this case, the transmission piece 77a collides with the back part 84b of the one-way pawl 84, causing the mounting to swing in the direction of escape against the elasticity of the spring 83. There is no need to rotate the spool 79. In addition, in FIG. 15, the bar part 84b of the one-way claw and the discrepancy piece 77a are for convenience of illustration.
They are shown spaced apart. In the illustrated embodiment, the one-way coupling mechanism 71 includes a spool transmission washer 77 and a driven portion.

Material 81. Although it is composed of one-way pawls 84 and the like, the winding shaft 6
5, the spool 79 only rotates when winding the film.
Any configuration that transmits the information may be used, and is not limited to the configuration of the illustrated embodiment.

Again in FIG. 2, the intermediate gear 74 is equipped with a tin rocket.
85 (Sprocket gear 8 fixed to D shaft 85a)
6 are engaged. A film feed detection section 87, which is rotated by the side edge of the film, is rotatably inserted and supported by the shaft 85a. Detection tube 87 (Ma.

It has a protrusion 87a on its curved surface. A film feed signal switch SWs is disposed on the rotation locus of the protrusion 87a, and is turned on and off as the detection tube 87 rotates when the film is fed.

The sprocket 85 is configured to transmit the rotation of the constant rotation gear 13 so that when the constant rotation gear 13 rotates once, the film (not shown) is fed by one frame.

Hereinafter, the gear υ connected from the gear 23 to the tin rocket 86 will be referred to as a hoisting wheel train system.

Also, the film winding speed of the spool 79 is always greater than the film feeding speed of the sprocket 85 (the rotational speed ratio is set so that The film is tightly wound around the spool. During rewinding, the driving force from the gear train is not transmitted to the spool 79JC as described above, so the rewinding film is smoothly unwound from the spool. When the total number of revolutions of the sprocket 85 required to feed the entire film is 1, and the total number of revolutions of the rewind fork 37 required to tightly wind the entire film is 02, the number of revolutions between the sprocket and the winding The rotation speed ratio N 'N of the return fork is N, /N2≧nl/11'
The gear ratios of the winding train system and the rewinding train system are set so that 2n2.

Further, the cartridge storage chamber is provided with a cartridge detection switch 5WF (see FIG. 17(a)) for detecting whether or not a cartridge is attached to the camera. 7th
In FIG. 8 and FIG. 8, the position of the movable contact 100 is determined depending on whether or not a cartridge is loaded in the cartridge storage chamber. If the cartridge is not loaded, the movable contact 100 is at a retracted position shown by a solid line with respect to the movable contact 55c. and is loaded ((, the cartridge detection switch SWF
is now located at the dashed line position where it is closed (:).

): By configuring the back cover switch SW8 and the cartridge detection switch SW as shown in QfS, the case A shown in FIG. 16, FIG. 17, and FIG.
When this is established, it becomes possible to adopt the system described below. That is, the movable contact 100 is ground, the fixed contact 54 is Sig, and the switch 5WFB is turned on only when there is a cartridge and the back cover is closed.
”. Then, a circuit as shown in FIG. 17(b) is constructed. By doing this, the camera movement "playful autoload" in FIG. 16 is eliminated, and when the switch swF8 is off, the system is exactly the same except that it is always played with play autoload.

It is connected to sprocket 85, and when winding, it adds l frame speed in response to advancing one frame of film, and when rewinding, it subtracts or resets to the initial state (hereinafter referred to as VsJ), and , when the camera back is opened, the film counter is reset to "s".

is provided.

In particular, each operation will be explained.

film loading Turn on the power switch SWD.

In FIG. 5, when the back cover button 6o is pressed down with a finger against the elasticity of the push spring 61, the protrusion 6od is pushed down on the back, t[''
Push the knob 62 downward. Since the back cover lock 62 is given a swinging behavior by the leaf spring 64, the engaging portion 6
When the engagement portion d2c and the locking step portion 45b are pushed to the point where they are disengaged, the locking portion d2c swings clockwise and engages with the locking step portion 450, as shown in FIG. -rru. Protrusion 60
11, when the back cover lock 62 is pressed down, the button 60 hits the lower edge of the elongated hole 62a as shown by the chain line, but when the pressing operation on the back cover button 0 is stopped, the button 60 is released by the push spring 6.
1 and is moved upward and held in the position shown in FIG. Due to the sliding and rocking of the back cover lock 62,
The engagement action of the back cover claw 63 begins to be released.

When the protrusion 60b moves as shown in Figure 4C6 by pressing the back cover button 60, the movable contact 55, which was currently locked on the protrusion 60b and closing the back cover switch SW8, moves to the sixth position. As shown in the figure, the spring 59 follows the protrusion 60b due to its elasticity. To move the back cover switch SW8,
The stop flange portion 57b of the contact piece seat 57 abuts against the end surface of the guide portion 47, thereby preventing the first movement.

At this time, the bent end 55a of the movable contact 55 and the fixed contact 54
The one end 54a is spaced apart from each other as shown in FIGS. 6 and 8. That is, the back cover switch SW8 is turned off. As the camera back opens, the film counter resets to "S".

Counter Suidachi SWo is turned off.

When the projection 60C is moved by pressing the back cover button 60, one end 510 of the rewinding lever 51 engages with the projection and pushes down the rewinding fork operating rod 44 against the spring 49. Even when the operating rod 44 reaches the bottom dead center, the protrusion 60o moves further downward, but this movement is not transmitted to the operating rod 44 due to the rocking of the release lever 51, as shown in FIG. . At the timing when the release lever 51 starts swinging, the back cover pawl 63 is completely released from the back cover 2.

When the rewinding fork operating rod 44 is pushed down, the operating plate 42 integrated therewith pushes the rewinding fork 37. When the operating rod 44 is in the raised position, the rewinding fork 37 moves to t! As shown in Fig. J9, the claw portion 56a of the engaging claw 36 is retracted into the hole 40. The return fork 37 is lowered. Then, just before the bottom dead center of the operating rod 44, the return fork 37
The rewinding fork spring 410 is rotated clockwise by its elasticity to position the engagement edge 40a below the claw 36a, as shown in FIG. After this, back cover button 60
When the finger is released from the button, the button rises by the amount that the protrusion 60d moves through the elongated hole of the back cover lock 62. Then, the projection 600 and the release lever 51 continue to be in contact with each other, and the operating rod 4
4 maintains the same position, and the rewinding fork 37 and the engaging pawl 36 continue to engage with each other due to the pressing force of the rewinding fork spring 41. That is, even if the rewinding fork section is artificially moved with the back cover open, the fork 37
The engaging pawl 36 is returned to and held in the locking position by the pressing force of the spring 41. In other words, the rewinding fork 37 is held at the standby position.

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, the film is pulled out to near the surface of the spool 79 and the back cover is closed. When the cartridge is attached, the movable contact 100 and the contact 55c come into contact, and the cartridge presence detection switch 5WF (see Figure 17) is closed.

In FIG. 6, when the back cover is closed, the back cover claw 63 engages one side edge 62dKl of the back cover lock 62, and this is held by the spring 6.
4 and swing it counterclockwise. Due to this rocking, the back cover lock 62 moves between the locking step portion 45c and the engaging portion 62c.
and is moved upward by the elasticity of the push spring 6. The upward movement is prevented by the engagement of the engaging portion 62c with the locking step portion 45b, but at this time, as shown in FIG.
3 to lock and hold the back cover in the closed position.

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

When the projection 60b moves due to the raising of the back cover button 60, it pushes up the movable contact 55 against the spring 59, as shown in FIG. When brought into contact, the back cover switch 5W8 (see FIG. 7) is closed.

When the back cover switch SW8 is closed, the inverter INV
, the output becomes high level (hereinafter referred to as rHJ). At this time, the film counter is rBJ and the counter switch S
If Wo is off, the output of the AND circuit AND2 is H.
, and the output of the OR circuit QRI becomes H. Since the output of the inverter ItJV is H, the NAND circuit NAND
The output of I becomes low level (hereinafter referred to as rLJ), transistor Trl turns on, relay R1d turns on and its contact RLI-, switches to the position shown by the broken line, and motor l moves in the hoisting direction (in Fig. 2). rotates forward in the direction of the solid arrow).

As the motor 1 rotates, 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.
Turn each Sugero Keshito 85 [IJ] and wind the film until the film counter reaches "1".

When the film counter reaches "1" and the first frame of the film reaches the shooting position, the counter switch SWo is turned on, the output of the AND circuit AND2 becomes L, and the OR circuit O
The output of R+ becomes LK, the output of NAND circuit NAtJDI becomes H, transistor Tri is turned off, and relay RL is turned off.
I is turned off, motor 1 is stopped, and film winding is stopped. When the back cover switch SW s is closed, if some frame of the film is in the shooting position and the film counter is in "S", the counter switch SWc is turned on from the beginning (I'm sorry, motor 1 is turned on). The film cannot be wound while it remains stopped.

This completes the autoloading of the film, and all that is left to do is press the release button.
Let us describe the operation of the driving force transmission system.

It has already been mentioned that the rewinding fork 37 is held in the standby position when loading the cartridge. In FIG. 2, 10 rotations of the motor are transmitted to the bevel gear 24 through the drive train, causing it to rotate in the direction of the solid arrow. However, as shown in FIG. 3(b), the planetary gear 27 meshing with the sun gear 24 moves away from the rewinding driven gear 28, so it is impossible to rotate the gears 24 and 24 at the same time. There is no. In other words, by providing the planetary gear mechanism, the transmission of driving force to the rewinding wheel train system, which is completely unrelated to the hoisting operation, is cut off. I
The planetary gear 27 meshes with the rewinding driven gear 28 to rotate it. However, the sun gear 24 force)
is transmitted through the planetary gear 27 to the rewinding driven gear 28,
Timing belt 33. The rewinding fork gear rotated by the gear 31 has a claw portion 56a and a locking step portion 40a.
The standby position is maintained because the two rotate in the direction of the locking hand. During film winding, it takes only a very short amount of time for the planetary gear 27 to mesh with the rewinding driven gear 28.

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

If only a planetary mechanism is provided, the film and viewing frame will be rotated during hoisting, resulting in an increase in load and loss of energy. In the event of an abnormal operation, rewind fork 3
Even if the first winding is started with the film 7 protruding, at the initial stage of winding, the rotational speed V rotated by the planetary gear 27 (and the film-rewinding fork 37 by the rewinding wave gear 2B) , k, rotational speed v due to Sun Gi 24
Since 1 is less than 4 (to the sun gi '24, rewind am
The gear 28 comes to a relative stop (・ru), the planetary gear mechanism operates normally, cuts off the drive of the rewinding wheel train, and the sjl
Prevents reverse winding and tension of the film mentioned 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 t1 has passed since the motor 1 starts rotating in the winding direction, in other words, if the film feed detection cylinder 87 (see Figure 2) does not rotate. , stops motor 1. That is, when the film feed signal switch SWs is off, the inverter INV4
The output becomes L, and the cartridge presence detection switch SW,
is on and the output of the AND circuit AND3 is L, so the output of the OR circuit OR2 is low. On the other hand, since the output ()J of the OR circuit OR+ is H and input to the AND circuit AND4, the pulses from the pulse generator PG pass through the AND circuit AND4 and are counted by the counter CA. Counters aA, aB, cc are time limit t1 "2" t3
It constitutes a timer with a counter (iA
The output becomes H after t1 time from the start of counting. At this time, the back cover switch SWB is on and the inverter INV
, the output of the AND circuit AND7 becomes H, and the alarm AM is turned on to issue a warning of the hoisting failure.

This alarm AM may be an alarm device that warns with sound or may be an alarm device that warns with light.

When the camera back is opened in response to the winding (autoload) failure alarm, the camera back switch SWB is turned off, the output of the inverter INV becomes L, the output of the AND circuit AND7 becomes L, and the alarm AM is turned off.

Next, after reloading the spool with film and closing the back cover, the camera returns to the auto-start operation described above.

When the autowind autoload is successful and the release button is pressed, the release switch SWR is turned on and the ANDI output goes high.
Next 1. The release switch RE drives the 7-point shutter. Then, the wind end switch SWwI is turned on when the shutter trailing curtain finishes running. By turning on the wind end switch SWw, the inverter INV,
The output of the OR circuit becomes H, the output of the OR circuit OR+ becomes H1, the output of the NAND circuit NANDI becomes L, and the transistor Tr
1 is turned on, relay RLI is turned on and motor 1 is rotated in the hoisting direction.

Then, the constant rotation cam 13 (see Fig. 2) rotates once,
At the same time, the sprocket 85 is rotated to feed the film by one piece. As a result, the wind end switch SWw
is turned off, and the inverter INV.

The output becomes L. At this time, counter switch SWC
is on, the output of the AND circuit AND2 is L1.
The output of the OR circuit O old becomes L1, the output of the NAND circuit NANDI becomes H, the transistor Tr+ turns off, and the 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 Film winding is progressing and no further winding is possible. In other words, the film is close to the torque that will break the film
When the load torque of the spool 79 increases, the lower clutch 7
3 resists the elasticity of the spring 75 and moves downward against the slope of the chevron-shaped facing surfaces 72a and 73a with the lower clutch 72.
The driving force transmission between the film winding shaft 65 and the sprocket 85 is cut off (see FIGS. 2, 11, and 12). In FIGS. 2 and 12, when the lower clutch 73 moves, the clutch switch SWK is closed. When the clutch switch SWK is turned on, the output of the inverter INV5 becomes H, and the output of the OR circuit OR3 becomes H. Here, since the output of the counter Co is L and the output of the inverter INV6 is H, the output of the NAND circuit NAND2 becomes L4C, which is the NAND circuit NAND3.

The flip-flop FF consisting of NAND4 is sent and its output becomes H. This flip frog FF H
The output 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, tin location)
A film end signal is also output when the film is destroyed and the film is put away. That is, the film feed signal switch SWs is turned off, the output of the inverter INV4 becomes L, and the film feed signal switch SWs is turned off.
is on and the output of the AND circuit AND3 is L, so the output of the OR circuit OR2 becomes L and the counter C
The recent inputs of A, CB, and ca become L. Also, the output of the OR circuit OR+ is H and the output of the AND circuit AND4
, one counter switch SWo is on, and the output of inverter INV2 is H.

Therefore, the pulse from the pulse generator PC is output to the AND circuit A.
It passes through ND4 and AND5 and is counted by counter CB, and after t2 hours from the start of counting, counter O
The output of R becomes H, and the output of OR circuit OR3 becomes H. At this time, the output of the counter CC is L and the inverter I
Since the output of NV6 is H, the output of NAND circuit NAND2 becomes L, and the flip-flop FF is set.
A film end signal is output.

When the auto rewind film end signal is output, the inverter INV
, becomes L, turns on transistor Tr2, turns on relay RL2, and closes its contacts RL2. When turned on, motor 1 is reversed in the rewinding direction.

In FIG. 2, when the motor 1 rotates in the rewinding direction indicated by the dashed arrow, the constant rotation gear 16 rotates in the rewinding direction.
Rotate the sun gear 24 in the direction of the broken line.

Sun gear 240 rotations, planet gear 27! @Figure 6ra
) as shown in FIG.
Rotate this. The rotation of the rewinding driven gear 28 causes the rewinding fork gear 34 to rotate in the rewinding direction shown by the dashed arrow (see FIGS. 2 and 10) via the timing belt "53. gear 31. In FIG. , rewind fork 37
There is an operating rod 44. A frictional force is exerted by the actuating plate 42 biased by a spring 49 (see Figure 45). Since this frictional force is larger than the pressing force by the rewinding fork spring 41, the rotation of the rewinding fork gear 340 causes the rewinding fork spring 41 to bend. Therefore, the rewinding fork gear 34 reaches an angle at which the claw portion 36a and the engaging edge portion 40a are disengaged.
When rotated, the rewinding fork 37 is projected by the actuating plate 42, which is biased by a spring 49, as shown in FIG. This protrusion of the rewinding fork 37, the body 45
There is no frictional force on the unwinding lever.
The driving force from the gear 34 is also transmitted to the hoisting shaft 65 via the transmission wheel train system without any loss.
Then, the sprocket bar 85 is rotated in the unwinding direction indicated by the dashed arrow (see FIG. 2). The rotation of the winding shaft 65 in the unwinding direction also rotates the constant torque clutch mechanism 69 and the spool friction mechanism 70, but a one-way coupling mechanism 71 exists between it and the spool 79 on which the film is wound. By doing so, the signal is not transmitted to the spool 79. That is, as shown in FIG. 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, but the one-way type 84 moves inward around the nail skin shaft 82a. The rotation of the hoisting shaft is not transmitted to the spool because it swings in the direction away from the spool.

In this state, the rotation of the motor 1 rotates the sprocket 85 to feed the film in the rewinding direction, and also causes the rewind fork 37 to rotate 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 tin rocket 85.

Further, since a one-way mechanism is provided between the constant rotation gear 13 and the set cam 15 (see Fig. 2), the rotation of the constant rotation gear 13 in the rewinding direction is controlled by the set system of the shutter and quick return mechanism. is not transmitted to.

And the tin rocket needed to send the entire film.
When the total number of rotations of 85 is old and the total number of rotations of rewinding fork 57 is 02, the gear ratio is set so that the rotation number ratio N1:N2 is N, and C2≧nt/n2. Therefore, in the first half of the film rewinding operation, the amount of film fed per unit time by the sprocket 85 is larger than the winding area by the rewinding fork 37, so that the film is fed to the cartridge shaft by the subrokent. The film is wound slowly. Then, in the latter half of the rewinding operation, the cartridge shaft, which gradually becomes 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 as soon as the sprocket finishes feeding the entire film,
In the cartridge, the tightly wound film is rewound and stored.

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)
, and turn on the clutch switch sw.

When the clutch switch SWK is turned on, the inverter is turned on.
The output of V becomes H, the output of OR circuit OR3 becomes H,
At this time, the output of color/li CC is L and inverter NV6
Since the output of NAND circuit NA'ND2 is H, the output of NAND circuit NA'ND2 is [4, the output of NAND3 is H1], the output of Bark INV is L, and transistor Tr2,
I) -RL2 turns on and rotates the motor 1 in the rewinding direction. The rewinding operation after the motor 1 starts reverse rotation is the same as the auto-rewind 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 film Cachatrone with auto rewind operation. At this time, the output of the NAND circuit NAND3 is H
Then, a pulse is applied from the pulse generator PG to the color/re OC via the AND circuit ANDt5, and the film feed signal switch SW8 is off and the output of the inverter INV4 is L.
Then, since the output of the AND circuit AND3 is L when the cartridge presence detection switch SWF is turned on, the OR circuit OR
The output of 2 becomes L, and the counter Co becomes an AND circuit AND.
Count the input pulses from 6. The output of the counter QC becomes H after 3 hours from the start of counting, and the inverter INV
The output of 6 becomes L. Then, the output of the NAND circuit NAND2 becomes H, the flip-flop FF is reset, the output of the inverter INV becomes H, the transistor Tr2 is turned off, the relay RL2 is turned off, and the motor 1 is temporarily stopped. When the output of the inverter INV becomes H, the back cover switch SWB is turned on and the counter switch SW is turned on.
c is off, the output of the AND circuit AND 2 is H, and the output of the OR circuit OR+ is H, so the NAND circuit is NAND.
The output of 1 becomes L, the transistor Tr+ is turned on, and the motor 1 rotates in the forward direction by the relays tu, +kao/shi'. The film is wound up by the forward rotation of the motor 1, and the shutter and quick return mechanism are set to the standby position. When the film counter Zr5J becomes 1 during film winding and the counter switch SWo is turned on, the output of the AND circuit AND2 becomes L and the NAND circuit NAND
The output of I becomes H, transistor Trl and relay R
LI turns off and motor 1 stops. Furthermore, when the film counter becomes rSJ and the counter switch SWo turns off when the film is rewound, the output of the AND circuit AND2 becomes H and the output of the OR circuit ORI becomes HK, so that the pulse from the pulse generator PG becomes AND. The signal is input to the counter OA through the circuit AND41. Here, the tronne presence/absence detection switch SW is turned on and the output of the AND circuit AND3 is L. When the feed signal switch SW is turned off, the output of the OR circuit OR2σ) is L. Therefore, the output of color Ck becomes H after t1 time after counting the input /C (before the counter switch sw0 is turned on), and since the camera back switch SW is on, the AND circuit AND7(
1) Output power: becomes H and alarm AM notifies the end of film rewinding. In other words, the "auto start" and "auto load failure" systems are used as an alarm system for the end of film rewinding.

In this example, there is a uniformity in usage in that the back cover is opened by the alarm AM alarm, and the usage is consistent.

When the back cover button 60 is pressed by recognizing the alarm, the back cover switch SW is opened and the alarm is stopped, as shown in FIG. When the back cover is opened in conjunction with the pressing of the back cover button 60, the rewind fork S7 is lowered to the standby position shown in FIG. is retained.

Turn off. At this time, since the rewinding fork 37 is lowered to the standby position and held there, it is extremely easy to take out the cartridge.

This camera uses a pseudo-shooting operation, so-called, even if you do not load film or want to load film, when you open the camera back, press the release button, and turn on the wide/end switch SWwI, motor 1 rotates forward. do. The conditions at this time are: back cover switch SW8 is off, wind end switch SW, 1 is on, clutch switch S
wK is off. And wind end switch S
When WWI is turned off, this play motor 1 stops rotating. The conditions at this time are that the back cover switch SWa is off, the wide/end switch SWwI is off, and the clutch switch SWK is off.

On the other hand, when the back cover is closed, the back cover switch SWB is turned on, the counter switch SWo is turned off, and the clutch switch SwK is turned on.
The motor 1 rotates normally under the condition that the counter switch SWo is turned on, the wind end switch SWwI is turned off, and the clutch switch SWK is turned off, and the motor fullness stops and the play autoload ends.

If the cartridge is not loaded and the cartridge detection switch SWF is off, the feed signal switch SW
Instead of the pulse generated by 8 (pulse that occurs only during film feeding) being input to the OR circuit OR2 via the inverter ■Nv4, the pulse generated by the pulse generator pc regardless of film feeding Since the signal is input to the OR circuit OR2 via AND3, the motor 1 is controlled and the alarm AM is operated in the same way as when loading the cartridge, and winding and rewinding operations are performed.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the block fork mechanism showing the configuration of the camera of the present invention, Fig. 5 is a front view showing the back cover locking mechanism and its surroundings, Fig. 6 is a perspective view showing the same operation, and Fig. 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 stool friction mechanism, and a stool friction mechanism provided between the film winding shaft and the spool.
An exploded perspective view showing the one-way connection mechanism, FIG.
Figure 4 is a plan view of the above film when it is being wound up, Figure 15 is a plan view of the same film being unwound, Figure 16 is the motor control 70-chart, and Figure 17 (a) is the same as above. 17(b) is a circuit diagram showing a modification of the above, and FIG. 18 shows upper shaft, 69, constant torque clutch mechanism, 70, stool friction mechanism, 71...・One-way connection mechanism, 79 river spool, F... film, S
W...No1 presence/absence detection switch, SWB...back cover switch, SWc...power switch, SW
...Wind end switch, sw8...Sending signal switch, SWK...Clutch switch. Procedural amendment (voluntary) May 78, 1980 l Indication of the case 1988 Patent Application No. 29576 No. 25a Ming name wth J1 Winding up and rewinding camera 3 Person making the amendment Relationship with the case Patent applicant office Tokyo 1-3-6 Nakamagome, Ota-ku, Tokyo Name (6)
74) Riko Co., Ltd. -4 Agent 156 Address 2-6-28 Sakuragaoka, Setagaya-ku, Tokyo Telephone 03, (Q8) 51 (Contents of Amendment 1,66 (1) Specification No. 121, Line 19 r 73a J
f-r 73J, r 73bJ to r 73cJ &'''
It (amend. (31m, 161m, 19th line 'eKL
(The rotational speed of the spool transmission washer 77 due to the upper wheel train system of the first volume is greater than the rotational speed of the spool 79 due to the film.'' (41, page 27, line 11, [i.e., j 161, page 27, line 15, change [OR circuit ORI j to [inverter NY, J]. (61, page 27, line 15). “AND 4 Next to J” in 18 lines &
(Add r and the OR circuit OR6J. σ1 Add k (with l. The output of the AND circuit ANDEI is L) after "L" in the 4th line of page 61 of the same. (8) No. 31 of the same “OR2”, f, r in the 5th line of the page
OR2, ohs. 11′・OR4”. 61 In the same page 31, line 6, [OR circuit 0R4J is changed to 1 inverter NV, J. a. [) (Trone...At1D3 J k in the same page 36, lines 16 to 14 Delete "AND circuit AND 8 Add J 0 Oll tv r in the same page 36, line 15 OR24f
"OR4J K amended. 021 "OR circuit OR1" on page 67, lines 18 and 19 of the same page is amended. 0 In the same page, page 68, line 6, change ``off'' to ``off, when camera back switch SWB is on''. u41 1ift 41st line 11th and 16th line +7
Add the missing Vt1- + "Rb J of J r OR2J, respectively. LI51 1Ml, page 40, line 16, insert the following sentence at the end of line 16. 1. In Fig. 17 (al), SWA is the initial IJ
Se, Tosui, Chi. 1161 ' Figure 17 of the drawings with Is (replace al with the attached one, 1,

Claims (1)

[Claims] 1. An electric winding and rewinding camera that winds and rewinds film in response to forward and reverse rotation of the motor (1. An electric winding and rewinding camera characterized by being provided with a one-way connection mechanism that transmits the rotation of the winding shaft to the spool during up-winding, and cuts off the rotational transmission between the winding-up shaft and the spool during rewinding.2. An electric winding and rewinding camera according to claim 1, characterized in that a one-way connection mechanism is provided inside the spool.