JPS5977425A - Winding device of camera - Google Patents

Abstract

PURPOSE:To eliminate unnecessary power consumption in trial photographing by inhibiting a film feed system from operating when no film is loaded. CONSTITUTION:When no film is loaded, a sprocket 50 is rotated clockwise around a shaft 54 to project from the opening of a pressure plate. Consequently, the end part 41c of a wind stopping lever 41 is released from being restrained by the cam surface of a spiral cam 51. When a shutter is released in this state, a member 38 moves to rotate a lock lever 39 and the wind stopping lever 41 clockwise to power on a motor M while the rotation of a spool 30 is inhibited, allowing a charge gear 34 and cams 35 and 36 to start rotating. Consequently, the motor M is held powered on. When the charging is completed and the cams 35 and 36 each make one turn, the motor M is powered off. Thus, the power consumption in trial photographing is reduced.

Description

[Detailed description of the invention]

The present invention relates to a camera winding device. Conventional camera winding devices are capable of autofocus (A, F') even when no film is loaded in the camera.
) mechanisms and the shutter mechanism's charging system and film feeding system have been driven too much.8For this reason, when a photographer takes a test shot, the shutter mechanism's charging system and film feeding system are Even when the film feeding operation was not necessary, the film feeding system operated, placing an extra load on the winding operation. Such an extra load is not desirable, especially in a camera whose winding operation is performed by driving a motor using a built-in battery in the camera body. With such a camera, if you frequently take test shots, there is a high possibility that the battery output will drop and you will not be able to take pictures before shooting the predetermined number of films. was created in view of these circumstances, and its purpose was to prevent the film transport system from operating when no film was loaded, thereby making it easier to use the camera's winding system during test shots (which would not consume excess energy). The present invention will be explained in detail based on the embodiments shown in the drawings. Figure 1 shows the disconnection of the motor used in the present invention. In this figure, 1 is a part of the camera body in which a support hole 1a1]b for rotatably supporting the motor M is formed.2 is a part of the camera body in which a core integrally formed with the rotor 3 is connected to a conductor 3. The rotor 14, which is wound around the poles, is a permanent magnet fixed to the outside *i 5 in order to form a magnetic field that acts on the conductor of the rotor 2.
A rare earth magnet is used to reduce the inertia of the outer cylinder 5. An outer cylinder 6 is fixed to the outer cylinder 5, and respective protrusions 5a, 6a of the outer cylinder 5.6 are rotatably fitted into support holes 1a, ], b of the camera body 1. Further, the outer cylinder 5.6 rotatably supports the rotor shaft 3 via a lubricating spacer 8, and the rotation center of the Rogue 2 is set on the outer cylinder 5.6.
．． The center of rotation is approximately aligned with the center of rotation of 6. 7 is an insulating core fixed to the Rogue shaft 3. Reference numeral 10 denotes a brush that comes into contact with the commutator 11 in order to supply potential from a power source (not shown) to the conducting wire of the loco 2. One side of this brush 10 is connected to a conductor formed along the outside of the protrusion 6 of the outer cylinder 6. Part 6! The other is electrically connected to the conductive part 6c formed inside the conductive part 6b via the insulating layer 12. 15 is for connecting the conductive part 6b to the power source. Continuity part 6
The brush 16 that contacts the outer periphery of the outer cylinder 5.b is a pin that fits into a groove provided at the tip of the conductive part 6c in order to connect the conductive part 6c to a power source. (see FIG. 2), it is urged upward in the drawing. 13 is a pinion gear fixed to the rotor shaft 13; 14;
The protrusion 6a) of the outer cylinder 6 is a solidly layered pinion gear, and is the n'th pinion gear that can rotate integrally with the rotor 2 or the outer cylinder 5, respectively. Therefore, according to the law of action and reaction, when one of the pinion gears 13 and 4 is locked, the other rotates. FIG. 2 is a perspective view showing the single-layer application ψ11 of the present invention. In this figure, 30 is a rotatably supported spool for film storage, and 32 is this spool 30.
This gear is fixed to the pinion gear 13 through the intermediate gears 22, 22a and 23, and the rotation of the pinion gear 13 causes the spool 30 to rotate in the direction of the arrow a in the figure. Note that the outer periphery of the spool 30 is provided with a thickly stamped member such as rubber, and when the leading edge of the film comes into contact with the outer periphery using a known autoload mechanism, the rotation of the spool 30 causes the prison ≠
It automatically winds the film. The pinion gear 14 is an intermediate gear 25, 26, 26a, 27
The charge gear 34 is interlocked with the charge gear 34 through the rotation of the charge gear 34, and the charge gear 34 is rotated in the direction indicated by the arrow in the figure. This charge gear 34 is a support shaft 34a.
It is rotatably supported by the cams 35 and 36, and rotates integrally with the cams 35 and 36. 44 is illustrated arrow C
A hoisting rack that charges a shutter mechanism (not shown) and an autofocus (AF) mechanism (not shown) by moving in the direction, and is supported so as to be movable along a long groove 44al through a shaft 45, and is supported by a spring 46t in the opposite direction of the arrow. energized. This hoisting rack 44 is moved in the direction of arrow C in the figure by transmitting the driving force of the motor M by meshing the teeth 44c provided on the side surface with the charge gear 34. In the illustrated state, the charge gear 34 Since the notch portion 34b is located at a position facing the tooth portion 44c, the meshing is released. Note that 44b is a shutter mechanism and a claw that comes into contact with the charging member of the Ar4 structure. When 41 is rotatably supported on the shaft 41a, it can be freely swung in a direction substantially orthogonal to the U-tai sword (in the direction of arrows e and f in the figure). The motor power supply control member is a winding stopper lever that is biased counterclockwise by a spring 42.

[The contact piece pressure of the contact piece 43 (this forces the end 41c downward in the figure). Also, the end portion 41c of the contact piece 43 is pressed against the cam 35 (the end that can engage with the square-shaped groove 35a). 41h, and comes into contact with the member 38 that moves in the direction of arrow d according to the shutter travel T, and when the shutter completes travel, the winding stopper 1-4
1 in the clockwise direction ζζ around 4141a, and the abutting portion of this end 41d is in contact with the member 38! Even if >1, the winding stop lever 41
is formed in a circumferential shape so as to be swingable in the directions of arrows e and f. 43 is an electric contact for controlling the power supply to the motor M, and is fixed to one arm of the winding lever 4].
As a result, it is integrally displaced with the winding stop lever 41. this'
N (The tip of the air contact piece 43 is not pressed against the unillustrated electrode bag ζ, and slides on the 1st pole pattern, and the first winding lever 41 is moved to the winding completion position shown in the diagram (when this happens, the motor M 39 is a groove 36a formed in the cam 361 (: a pawl that engages and prevents the charge gear 34 from rotating in the direction of the arrow). 39c and a locking lever 39b that engages with the ratchet gear 33 fixed to the spool 3o (thus inhibiting rotation of the spool 30 in the direction of the arrow).
9 is rotatably supported by a shaft 39ai, and is also biased counterclockwise by a spring 40.In the illustrated winding state, this locking lever 39 has a claw portion 39c and a cam 36. At the same time, the claw part 39b and the ratchet gear 33 are disengaged from each other, and when the member 38 contacts the end part 39d and rotates clockwise due to the shutter traveling atoms, the claw part 39C is engaged with the ratchet gear 33. When the engagement of the groove 36a of 3G is released, the pawl portion 39b and the ratchet gear 33 are also engaged.
The helical cam 51 has approximately 4 helical cams which are in contact with the end 41c of the winding stopper lever 41.
The end Mu 41 c is formed around the helical cam 5.
] The sprocket 5o is in contact with the outermost circumference of the [Samurai]
By rotating, the k provided on the innermost peripheral surface
51a and end portion 4]c are engaged, and the winding lever 41 is set to the illustrated position. Incidentally, the sprocket 5o is configured to rotate once due to the fact that the film is fed erratically on one side. 53 is! ? A holding lever rotatably supports a sprocket 50 and a helical cam 5 via an I52, and this holding lever 53 is rotatably supported by a shaft 541 installed in the camera body (not shown). Together, spring 551
Therefore, it is biased clockwise, but when the film is mounted on the camera body, the bottom of the tooth of the O/7-butt 5o comes into contact with the film Fζ, as shown in Fig. 3. Due to the rotation, the assembly is held in the position shown. In FIG. 3, reference numeral 6o denotes a pressure plate, which is biased in the upward direction ζ in the figure by a spring (not shown) and comes into contact with a rail (not shown). Further, this pressure plate 6o is formed with an opening 60a for allowing the sprocket 50 to escape to the pressure plate 6o side when the film F is not mounted, as shown in FIG. The operation will be explained. Figure 2 shows a state in which the camera film is loaded and winding is completed. From this state, operate the release button (not shown) to set the AF.
When the shutter mechanism is activated to take a photograph, the member 38 moves in the direction of arrow d, and when the shutter operation is completed, the winding stop lever 41 and the locking lever 39 are rotated clockwise. This state is shown in FIG. As a result, the locking lever 39 disengages the claw portion 39c from the groove 36a of the cam 36, engages the claw 39b with the ratchet gear 33, and prohibits rotation of the spool 30. On the other hand, the winding stopper lever 41 is rotated clockwise to release the engagement between the end 41b and the groove 35a of the cam 35, and the shaving 5] between the end 4]c and the helical cam 5]
Release the engagement with a. From this ζ, the winding stopper lever 41
is moved in the direction of arrow e by the contact piece pressure of the contact piece 43, and the end portion 41c
from the innermost circumferential surface of the helical cam 51 (3rd position)
(see figure). At this time, the contact piece 43 also slides on a pattern (not shown) in accordance with the rotation of the winding stopper lever 41, and power supply to the motor M is started. By the way, at this time, the rotation of the spool 30 is prohibited and the pinion gear 3 fixed to the rotor @3 is locked, so that the outer cylinder 5.6 of the moku M cannot be rotated by the power supply. For this reason, the rotation of the pinion gear ]4 fixed to the outer cylinder 6 is caused by the rotation of the charge gear 34. The charge gear 34 and the cams 35, 36 rotate integrally in the direction indicated by the arrow. Rotation of charge gear 34 Rack 4
4 moves in the direction of arrow d and charges the AP/shutter @ structure. When the shutter mechanism is charged, member 3
8 moves in the direction opposite to the arrow d, so the locking lever 39
is due to the biasing force of the spring 40, and the winding stop lever 41 attempts to rotate counterclockwise due to the biasing force of the spring 42, but at this time, as shown in FIG.
When c comes into contact with the outer periphery of the cam 36, rotation is prohibited, and when the end 41c of the winding lever 41 comes into contact with the second stage of the helical cam 51, rotation is prohibited, and the motor M The power supply to the spool 30 and the locking of the spool 30 are maintained. After this, when the charging of the AF'@shutter mechanism by the rack 41 is completed and the charging gear 34 rotates once,
Since the notch portion 34b of the charge gear 34 returns to the position facing the tooth portion 44c of the rack 44, the rack 44 returns to the initial position (the state shown in the second figure) by the biasing force of the spring 46. Also, at this time, as shown in Fig. 5, the cam 3
6 rotates one turn and the groove 36a returns to its initial position, so the locking lever 39 rotates l times counterclockwise to engage the pawl 39c and the groove 36a, and also to engage the pawl 39b and the ratchet gear 33. Release the bond. As a result, the spool 30
Since rotation of the charge gear 34 is prohibited at the same time as rotation of the pinion gear J3 becomes possible, rotation of the spool 30? The winding of the film F is started. When the film 1 is wound up, the sprocket 50 rotates counterclockwise, so the helical cam 51 also rotates counterclockwise, guiding the end 4]c of the wind stopper lever 4 along the cam surface. . (See Fig. 6) After that, when the film F is wound up by one frame and the sprocket 50 and the helical cam 51 rotate once, the groove 5]a and the end 4]c of the helical cam 51 are aligned as shown in Fig. 7. When engaged, rotation of the sprocket 50 is prohibited, and the winding lever 41 rotates counterclockwise, so that the contact piece 4
3 returns to the initial position ζ and stops power supply to the motor M. Talented. At this time, the contact piece 43 forms a motor short circuit, so that the operation of the motor M is abruptly stopped. The camera now returns to the fully wound state shown in FIG. 2, and the next photograph can be taken. Next, the operation when no film is loaded in the camera will be explained. When the film F is not attached to the camera, the sprocket 50 is rotated clockwise about the shaft 54, as shown in FIG. Therefore, the restriction of the end portion 41c of the wind stop lever 41 by the cam surface of the helical cam 51 is released, and the wind stop lever 41 becomes in a state where it can freely move with respect to the helical cam 51. In this condition. When the shutter release operation is performed to activate the AF'/shutter mechanism and the locking lever 39 and the winding stopper lever 41 are rotated clockwise by the movement of the member 38, the rotation of the spool 30 is prohibited as described above. In this state, power is supplied to the motor M, and the charge gear 34
, the cams 35,36 start rotating. Due to the rotation of the charge gear 34, the rack 44 moves in the direction of arrow C to charge the AP/shutter air structure, and this charging causes the member 38 to move in the direction ζζ opposite to arrow d.
When υ, the locking lever 39 engages the pawl 39b and the ratchet gear 3 by contacting the outer periphery of the cam 36.
3, the end portion 41c of the winding lever 41 is not restricted by the helical cam 50 (therefore, rotation is restricted by the contact of the 7MA ff34 lb with the outer periphery of the cup 35a). After this, when charging is completed and the cam 36 rotates once, the claw portion 39c of the IF 1 collar 39 and the end 41b of the stopper lever 41 are connected to the cam. 36.35 groove 3
6a and 35a, the valley lever rotates counterclockwise, and the locking lever 39 engages with the claws 39b and 36m.
The rotation of the charge gear 34 is prohibited by the engagement of a, and the stopper lever 41 stops power supply to the motor M by the displacement of the contact piece 43. That is, according to this embodiment, if no film is loaded in the camera, only the AP/shutter mechanism is charged after the photographing operation is completed. By the way, from this state, attach the camera ζ film,
When the back cover (not shown) is closed, the bottom of the tooth of the sprocket 50 is pressed by the film F, and the holding lever 54 is moved by the spring 5.
The sprocket 50 is rotated against the biasing force 5, and the sprocket 50 is placed at the position shown in the ninth figure (this is the same as the position shown in the third figure). By the way, in the state shown in FIG. 8, the winding stopper lever 41 is swung in the direction of arrow e by the contact pressure of the contact piece 43, and its end 41c is opposed to the outermost cam surface of the helical cam 51. So. Due to the movement of the sprocket 50 described above, the winding stopper lever 4
1 is rotated clockwise to the position shown. As a result, the contact piece 43 starts supplying power to the motor M, rotates the spool 30, and winds up the film F. This film F
By feeding, the helical cam 51 is rotated via the sprocket 50, and the end 4 of the winding lever 41 is attached to the cam surface.
1c, gradually rotate the winding stopper lever 41 counterclockwise. After this, the helical cam 51 moves 1c.
When the end 41c of the winding lever 41 reaches a position where it can engage with the groove 5 of the helical cam 51 and the two engage, the rotation of the helical cam 51 is prohibited. At the same time, power supply to the motor M is stopped. That is, according to this embodiment, when the film is loaded, the film is automatically fed approximately 3 to 5 frames. In this embodiment 1-11, winding of the film F is started after charging of the AP/shutter mechanism is completed, so if the film F runs out of the cartridge while winding the film and a rewinding operation is performed, As shown in FIG. 8, the locking lever 39 has a claw 39c and a groove 36a of the cam 36.
This means that the pawl 39b and the ratchet gear 33 are disengaged from each other. Therefore, under normal conditions,
When I loaded a new film F into the camera and closed the back,
Since the state becomes as shown in m9, the blank feed starts immediately when a new film F is loaded. Next, FIG. 10 shows another embodiment of the present invention, and shows a state in which photographing is completed. In this figure, 01 is a motor, and 102 is a gear that is integrated with the motor shaft. Gear 1-02 meshes with gear 103. The gear 103 is configured to transmit the driving force of the motor 101 to the notched gear 104 via the gear train G1, and to transmit the driving force of the motor 101 to the gear 24 via the gear train G2. This gear 124 is rotatably supported by a support shaft 30, and a gear 125, which is similarly supported by a support shaft 130, is fixed. Also, 128 is gear train G
gear, 129, rotating the take-up spool 122 via 3;
are index plates whose claws provided on the circumference engage with the locking portion 1]8a of the locking lever 118, and each of them is connected to the support shaft 13.
01 (b) Supported for free movement. This index plate 12
9 is implanted with support shafts 131 and 132, and the support shafts i3 and z are teeth M1 that mesh with gear 125 and gear 27.
26 is rotatably supported, and. A planet #J is rotatably supported on the support shaft 32 and a gear 27 meshing with gears 126 and 128 to form a clutch.
It constitutes the jfL mechanism 134. Further, in this planetary gear mechanism 134, when the engagement between the claw portion of the indexing plate 129 and the locking portion 118a of the locking lever 118 is released, the load on the indexing plate 129 is made lighter than the load on the gear 128. is being done. Therefore, the planetary gear mechanism 134 acts on the take-up spool 122 as a clutch mechanism. By the way, 106 is a rack member that meshes and moves a certain amount when the notched gear 104 rotates.A pin 106a is fixed to this rack member 106, and a spring 107 is attached to the rack member 106.
is energized. By the way, the movement of the rack member 06 charges the AF mechanism and shutter mechanism (not shown). A cam plate 105 is fixed to the notched gear 104 and rotates integrally with the notched gear 104. When the notched gear 104 rotates once, a switch (not shown) is operated to control the motor 1.
This generates a stop signal of 01. Next, reference numeral 108 denotes an operating lever, which is rotatable around a support shaft 109 (one end of which is attached to the rack member 106).
pin] 06a, and a support shaft 111 is fixed to the other end. A control lever 113 is rotatably supported on this support shaft 111 . A control pin 113b is fixed to the other end of the control lever 113, and a control pin 113b is fixed at the approximately center position.
Spring 11 with one end attached to stopper pin 110
A pin 113a for attaching the other end of 2 is fixed. 114 is a slide plate, which controls the control pin 1 of the control lever 113.
] When the end 114a is pressed by 3b, it slides to the right in the figure while being guided by a pin 115, and has a pin 116 at one end. The locking lever 118 is rotatable about a support shaft 119, and one end of the locking lever 118 is engaged with the pin 116. Furthermore, the locking portion 118a is provided at the other end of the locking lever 118, as described above, and is biased counterclockwise by the spring 1]7. Next, 121 is a cam fixed to l1I1133, and a protrusion 121a is provided on the circumference of the cam to press the (ti11 surface)]3c of the control side louver]13.This shaft 133
A sprocket 120 that engages with a perforation 123a of the film 23 is also fixed to the cam 23, so that the sprocket 120 and the cam 21 rotate integrally. The sprocket 120, on which one frame of film is wound onto the spool 122, rotates once. Reference numeral 140 denotes a detection lever formed in a substantially U-shape, which is rotatably supported by a support shaft 141 provided at one bent portion, and biased counterclockwise by a spring 142. There is. Also, one end 1 of this detection lever 140
40b is a film lever] 40 is held in the illustrated position, and the other end fl11 surface 140a is a slide plate 114.
The slide plate 11 is rotated counterclockwise from 142 so that it can come into contact with the side surface 114cI of the vertically bent portion 114b.
4 to the right in the figure. Next, the operation of this embodiment configured as described above will be explained. First, when driving of the motor 101 is started in the state shown in FIG. 10, the notch gear 104 and the gear 124 start rotating via the gear trains G1 and G2. Due to this rotation, the rack 106 starts moving in the direction of the arrow, and at the same time, the planetary gear mechanism 134 also starts rotating. At this time, the rotation of the index plate 129 of the planetary gear mechanism 134 is restricted by the locking part 118a of the locking lever 118 as shown in the figure, so the rotation of the planetary gear mechanism 134 is restricted by the gear 128. transmitted to. Therefore, the take-up spool 122 is connected to the gear train G.
3 to start winding the film 123. This (Koyori sprocket), 20, :!: Cam 1 integrated with this
21 is also turned C1, and the control lever J lever 113 is moved to the protrusion 121a.
moves from the indicated position 11゛ due to the rotation of the spindle 1
11 in the chronological direction [1 eye 1 do. by the way,
Lat'/ ] Q Pin 106a by moving J of 6
also moves, so the operating lever 108 is moved by the spring 11.20)
Due to the biasing force, the stopper pin 1 rotates counterclockwise around the support shaft 9 until it comes into contact with the stopper pin 1. Therefore, the ll1lI control lever 113, which is connected to the operating lever 108 via the support IIqllIJ1, also moves. Then, the control pin 1] 31) provided at the end thereof moves to a position where it can come into contact with the end 1] 4a of the slide plate 114. At this time, since the sprocket 120 meshing with the perforation 123a of the film 123 is also rotating due to the winding of the film 123, the cam 121 provided coaxially with the sprocket 120 is also rotating, and its protrusion 121a is As mentioned above, the control side lever 1] 3 is at 1 position so as not to press 11 (+1 side 1) 3c. In this state, the film 12 is
3 is rolled up by one frame, the protrusion 121a of the cam 121
The side surface 1]3c of the control lever 13 is pressed again as shown in the figure, and the control lever 113 rotates the support shaft 111 counterclockwise around the center ζ against the spring 112. 3, the control pin 11.3b presses the end 114a of the slide plate 114 and slides the slide plate 1]4 to the right in the figure. It rotates clockwise around the support shaft 119, and the claw portion of the index plate 29 is disengaged from the locking portion 118a of the lever.As a result, the load on the index plate 129 is reduced to the gear 128. The index plate 129 of the planetary gear machine @134 starts to rotate because the load applied to the gear becomes smaller than that applied to the gear. The rotation of the take-up spool 122 is stopped, and the winding of the film 123 is completed.Meanwhile, the rotation of the notched delivery wheel 104 described above is still continued, and the rack 06 is moved to a position where a shutter (not shown) or the like is charged. In other words, when the rack 106 and the notched gear 104 are moved to a position where the meshing is released, and the notched gear 04 rotates once, a signal is generated from the cam plate 105i that rotates integrally with the notched gear 04. The driving of the motor 101 is stopped. When the engagement is released, the rack 106 returns to the position shown in FIG. As a result, the control lever 113 moves against the spring 112, and the control pin ] ] 3 +) and the slide plate ], ] 4
The engagement of the end 1]4aJ is released, and the slide plate 114
returns to the illustrated position, and the locking lever 118 rotates counterclockwise about the support shaft 119. Therefore, the claw portion 118a of the locking lever 118 and the index plate 1
The pawls 29 are reengaged and the entire device is returned to its initial position, ready to begin the next charging operation. Note that the above explanation is for the case where the film 123 is loaded in the camera, but if the film 123 is not loaded in the camera, the detection lever 40 is moved counterclockwise by the biasing force of the spring 142. Since it rotates, its side 14
0a and the vertically bent portion 114b of the slide plate 114 are brought into contact with each other to hold the slide plate 114 in the position where it is slid to the right in the figure. As a result, the claw portion 1 of the locking lever 118
1.8a and the index plate 129 remain released, and even if the motor 101 is driven, the driving force of the motor 101 is not transmitted to the spool 122I, and only the charging operation of the shutter etc. What will be done will be done. Therefore, in a camera that performs a winding operation using a motor, the current consumption at that time can be reduced, and the effectiveness of the battery can be increased.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an embodiment of a motor used in the present invention, FIG. 2 is a perspective view showing an embodiment of the present invention, and FIG.
FIG. 9 is a plan view showing the operating state of this embodiment, and FIG. 10 is a perspective view showing another embodiment of the present invention. 2...Lower 1-13...Rotor shaft, 5.
6... Outer cylinder, ]3, 14... Pinion gear, 30... Spool, 33... Ratchet gear, 34... Charge gear, 35, 36... ... Cam, 39 ... Locking lever, 41 ... Stopping lever, 50 ... Sprocket, 51 ... Spiral cam, 60 ... Pressure plate, 134・・・・・・Planetary gear mechanism. Applicant Canon Co., Ltd.

Claims (3)

[Claims] (1) In a camera that operates a film feeding mechanism and charges a photographing mechanism by a predetermined winding operation, when a film is installed in the camera, the film feeding mechanism is activated by the winding operation. The winding device of the camera is prohibited from having a cutting means. (2) The camera and winding device according to claim 1, wherein the switching means is a means for controlling power supply to a motor for driving the film feeding mechanism. (3) The operating means has a clutch for controlling the transmission of driving force to the film feeding mechanism. Device.