JPH0829847A - Film unit with lens and method for attaching brush of motor and bearing method for motor - Google Patents

Abstract

PURPOSE:To incorporate a motor in a film unit with a lens without result in remarkable increase in scale, weight and cost CONSTITUTION:A rotor chamber 65 is provided on the side of a cartridge chamber 23 and between a main body base part 13 and a front cover 14, a rotor 60 is freely rotatably housed and permanent magnets 61a and 61b are assembled into the inwall of the rotor chamber 65. An armature chamber 66 housing armatures for a terminal 62 and 63 coming into contact with the shaft 60a of the rotor 60 is formed in the lower part of the rotor chamber 65. A gear chamber 75 housing a gear for transmitting the rotation of the rotor 60 to a winding gear 38 is formed in the upper part of the rotor chamber 65. Since a case is not used for the motor, the film unit with the lens can be made light in weight, small in size and inexpensive by the case.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens-fitted film unit, and more particularly to a lens-fitted film unit in which a film is wound by a motor.

[0002]

2. Description of the Related Art Conventionally, a film unit with a lens (trade name "Sharp Run Flash", which is inexpensive and easily available so that a photograph can be taken even when the camera is not carried.
Etc.) are also provided by the applicant. This lens-fitted film unit is an international standard (ISO 1007-197) in addition to a photographing mechanism such as a photographing lens and a shutter mechanism.
It has a built-in film with a patrone specified in (9th edition), and users who purchased this can easily enjoy photography, and after shooting, without taking out the film already taken, The lens-fitted photo film unit can be sent to the photofinishing shop as it is, and there is no need to perform troublesome operations such as rewinding the film or taking out the cartridge.

In the lens-fitted film unit, the winding knob is rotated to feed the film one frame at a time, and the shutter is charged by moving the film during this period. Therefore, the next shooting cannot be performed unless the winding knob is rotated for each shooting. As a result, the user sometimes forgets to wind up the film after shooting, and sometimes misses a photo opportunity.

In order to prevent such a failure, Japanese Patent Laid-Open No.
Japanese Patent Laid-Open No. 297441 proposes a photographing unit which has a motor, a gear meshing with a winding knob, and a battery, and is mounted outside the lens-fitted film unit. According to this, when the film winding switch is operated after photographing, the film is easily wound, so that the photo opportunity is not missed.

[0005]

Further, the above publication discloses that
Although it is described that a motor, a battery, etc. are built into the lens-fitted film unit, incorporating a motor in the lens-fitted film unit causes the lens-fitted film unit to become larger and heavier. ,
Further, there is a problem that the cost of the lens-fitted film unit is increased.

The present invention has been made in view of the above problems, and a lens-fitted photo film unit in which a motor is built-in does not significantly increase in size and weight and the cost increase is minimized. The purpose is to provide.

[0007]

In order to solve the above-mentioned problems, the lens-fitted film unit according to claim 1 comprises:
A rotor, a pair of permanent magnets arranged so as to sandwich the rotor, and a pair of terminal brushes in contact with the shaft of the rotor are directly incorporated between the main body and the front cover to directly compose a motor component to form a motor. It was done like this. As a result, the motor does not need a case, so that the cost can be reduced, and the weight and size of the case can be reduced.

According to a second aspect of the present invention, as a brush mounting method, a pair of terminal brushes are mounted on different members, respectively, and these members are combined from the front and the rear so as to sandwich the rotor. Are to be in contact with the respective shafts. Further, according to the invention of claim 3, a pair of terminal brushes are attached so as to come into contact with each other when the separate members are assembled from the front and rear, and the rotor shaft is sandwiched between the terminal brushes. The brush is adapted to be crimped to the shaft. According to this, the terminal brush can be easily attached, and further,
The contact between the terminal brush and the rotor shaft becomes more reliable.

According to a fourth aspect of the present invention, as a method of bearing a rotary shaft, a bearing projection is provided on each of separate members that sandwich the rotary shaft from the front and back, and the rotary shaft is formed by combining these bearing projections. Is rotatably supported. According to this bearing method,
The rotation shaft can be easily assembled.

[0010]

FIG. 2 shows the external appearance of a lens-fitted film unit according to the present invention. The lens-fitted film unit 2 is composed of a unit main body 3 having a built-in photographing mechanism and the like, and an outer case 4 for housing the unit main body 3. On the surface of the outer case 4, descriptive text such as how to use the film unit 2 is printed. The strobe light emitting section 5, the shutter button 6, the main switch knob 7, the number-of-images display plate 8, the viewfinder 9, the taking lens 10 are printed. , Strobe charging switch 11
There is a hole for exposing the etc. to the outside. Further, in the vicinity of the main switch knob 7 which constitutes the main switch, “ON” and “O” are shown to indicate the ON and OFF positions.
FF "is printed.

As shown in FIG. 3, which is an exploded view of the unit main body 3, the unit main body 3 has a main body base 13 in which various photographing mechanisms are incorporated, a front cover 14 attached to the front side of the main body base 13, and a main body base 13. The rear cover 15 is attached to the rear side of the main body 13 and a film 16 with a cartridge is housed between the main body base 13 and the rear cover 15, and these are detachably attached by claw engagement. The film 16 with a cartridge is composed of a cartridge 17 and a film 18 whose end portion is locked to a spool 17a of the cartridge 17 and which has a roll shape.

As shown in FIG. 4, the body base 13 has a light-shielding tube 22 having an exposure opening 21 for photographing on the optical axis 20.
On both sides of the light-shielding cylinder 22, a cartridge storage chamber 23 for storing the cartridge 17 and the film 1 are formed.
A film roll chamber 24 for storing 8 is formed. The front surface of the outer wall of the cartridge storage chamber 23 has a shape projecting more forward than the front surface of the outer wall of the film roll chamber 24. Further, a motor unit 25 constituting a film winding mechanism is provided on the side of the cartridge storage chamber 23.

An exposure unit 26 having a shutter mechanism, a film winding stop mechanism and the like assembled on the front surface of the light-shielding cylinder 22.
Is attached. The exposure unit 26 has two axes 2
7, 28 and the bearing opening 29 are integrally formed. The shaft 27 has a shutter drive lever 30 and a number-of-photos display plate 8.
And are rotatably inserted. A spring 31 and a locking lever 32 are rotatably inserted in the shaft 28.
The rotating member 33 is inserted into the bearing opening 29.

As shown in FIG. 5, the shafts 27 and 28 and the bearing opening 29 are integrally provided in a base member 35 which constitutes a part of the exposure unit 26. Rotating member 33
In the center portion, a winding stop cam 33a, a shutter charge cam 33b, a shaft 33c protruding downward, and a one-tooth gear 33d protruding upward are integrally formed. Axis 33
A driven sprocket 36 arranged in the base portion 35 is engaged with c, and the rotation of the driven sprocket 36 is transmitted. A tooth row 8a formed on the outer periphery of the number-of-photographs display plate 8 is meshed with the one-tooth gear 33d. Driven sprocket 3
6 is engaged with a perforation 18a formed outside the photographing range of the film 18, and is rotated once when the film 18 is moved by a length corresponding to one frame.

One end 31a of the spring 31 is engaged with the shutter drive lever 30 and urges the shutter drive lever 30 counterclockwise about the shaft 27. Also the spring 31
The other end 31b is engaged with the vertical piece 32a of the locking lever 32 to urge the locking lever 32 clockwise about the shaft 28. One end 30a of the shutter drive lever 30 is in contact with the shutter charge cam 33b, and the shutter drive lever 30 is rotated by the spring 3 by the rotation of the driven sprocket 36.
It is rotated clockwise against the bias of 1.

A groove 33e is formed on the outer periphery of the winding stop cam 33a. When the film is fed one frame into the groove 33e and the rotating member 33 makes one rotation, the claw portion 32b of the locking lever 32 is formed. Is designed to fit in. As a result, the rotation of the driven sprocket 36 is locked, and the winding of the film is prevented. Further, at this time, the locking lever 32 slightly rotates clockwise, but by this rotation, the protrusion 32c of the locking lever 32 engages with the rising piece 30b of the shutter driving lever 30, and the shutter driving lever 30. Hold at the charge position. Also, the locking lever 3
The meshing portion 32d formed on the No. 2 has a spool 17a on the lower surface.
A winding gear 38 having an engaging portion 38b engaged with the
Meshes with the tooth row 38a to lock its rotation. In addition, one rotation of the driven sprocket 36 causes one tooth gear 3 to rotate.
In 3d, the number-of-photographed display plate 8 is advanced by one scale.

When the shutter button 6 is pressed down, the locking lever 32 is rotated about the shaft 28 slightly counterclockwise by pressing the vertical piece 32a. By this rotation, the protrusion 32c of the locking lever 32 is disengaged from the rising piece 30b of the shutter drive lever 30, and the shutter drive lever 30 is rotated by the spring 31 in the counterclockwise direction about the shaft 27, so that the shutter is released. The kicking arm 30c of the drive lever 30 kicks off a shutter blade 40 described later.

A shaft 42 is formed on the front surface of the base portion 35 in parallel with the optical axis 20. The shutter blade 40 is rotatably attached to the shaft 42. Shutter blade 40
Rotates between a position where the exposure opening 44 provided on the optical axis 20 is shielded by the bias of the spring 43 and a position where the exposure opening 44 is retracted by kicking the shutter drive lever 30.

A shutter cover 46 is attached to the front surface of the shutter blade 40 so that the shutter blade 40 can move the optical axis 20.
Swinging in the direction of is prevented. A lens barrel 46a is formed integrally with the shutter cover 46. The taking lens 10 (see FIG. 1) is inserted into the lens barrel 46a.

A first metal contact piece 48, a second metal contact piece 49, and a third metal contact piece 50 for switching the motor unit 25 after one frame is photographed are attached to the base member 35 and the shutter cover 46. . As shown in FIG. 6, the first contact piece 48
The upper end portion 48b and the lower end portion 48c, which connect the inclined surfaces 48a, are formed in a substantially L shape, and the lower end portion 48c is attached to the front surface side of the base member 35. Also, the second contact piece 4
9 is formed by bending its tip 49a in an L shape toward the first contact piece 48, and is attached to the front surface side of the shutter cover 46. The tip portion 50a of the third contact piece 50 is also formed by being bent in an L shape toward the first contact piece 48, and is attached to the back surface side of the base member 35.

First contact piece 48, second contact piece 49, third contact piece 5
The motor unit 25 and the battery 52 are connected to 0 as shown in the figure, and the motor unit 25 is energized when the first contact piece 48 and the second contact piece 49 come into contact with each other. Also, this motor unit 2
When the first contact piece 48 and the third contact piece 50 contact each other while the motor 5 is energized, that is, when the motor portion 25 is rotating, the motor portion 25 is short-circuited and the rotation of the motor portion 25 is braked. Can be hung.

The upper end portion 48b of the first contact piece 48 has
A pin 32 protruding downward from the locking lever 32
e is abutted. The locking lever 32 is rotated clockwise in the figure at the time of charging the shutter, and at this time, the pin 32e presses the first contact piece 48 to the back side.
As a result, the first contact piece 48 is brought into contact with the third contact piece 50, so that the motor section 25 is short-circuited and the motor section 25 is not energized. Further, since the locking lever 32 is rotated counterclockwise immediately after the shutter release, the first contact piece 48 is not pressed and returns to the front side second contact piece 49 side by its elasticity. At this time, if the shutter button 6 is not pressed, the first contact piece 48 and the second contact piece 49 come into contact with each other and the motor section 25 is energized.

As shown in FIG. 3, a shutter button 6 is integrally formed on the upper surface of the front cover 14, and a cutout is provided so as to surround the three sides except the connection portion 6a so that the shutter button 6 can be pushed. It has become. A release arm 55 is integrally formed on the lower surface of the shutter button 6. Then, as shown in FIG. 6, the cam 56a
And the protruding piece 56b are integrally formed, and the bearing portion 56 is provided at one end.
The release link 56 provided with c is the release arm 55.
A shaft 57 is rotatably supported by the tip of the shaft. Also,
An elongated hole 56d is provided at the other end of the release link 56, and a shaft 14a planted on the back surface of the front cover 14 is inserted therein so as to be slidable. The protruding piece 56b faces the vertical piece 32a of the locking lever 32.

Above the release link 56, the knob 7a is provided.
The main switch 7 in which the cam portion 7b and the cam portion 7b are integrally formed in a T shape is slidably inserted into an opening 58 (see FIG. 3) formed in the front cover 14.

The cam portion 56b of the release link 56
And the cam portion 7b of the main switch 7 and the locking lever 32
And the pin 32e presses the first contact piece 48,
The rotation time of 5 is controlled.

As shown in FIG. 4, a strobe unit 70 is attached to the front side of the main body base 13 in addition to the exposure unit 26. The strobe unit 70 includes a substrate 71 on which electric components are attached, a light emitting unit 5 and a battery contact piece 7.
3, 74 are attached. Further, a charging contact piece 72 is arranged between the front of the substrate 71 and the back surface of the strobe charging switch 11. A battery 52 serving as a power source for the strobe unit 70 and the motor unit 25 is housed between the two electric contacts 73, 74. A battery contact piece portion 49b formed at the lower end of the second contact piece 49 is stacked on the battery contact piece 73.

As shown in FIGS. 4 and 7, the motor section 25 has a rotor 60 in which a coil 60c is wound around an iron core 60b attached to a shaft 60a which is a rotating shaft.
A pair of permanent magnets 61a and 61b arranged so as to sandwich the rotor 60, and a pair of terminal contact pieces 62 and 63 provided with contact piece portions 62a and 63a that contact the shaft 60a to supply electric power. And is assembled in the unit main body 3 so as to be sandwiched between the main body base 13 and the front cover 14 from the front and rear.

1, 8 and 9 showing the cross section of the motor portion 25, when the main body base portion 13 and the front cover 14 are combined, a rotor chamber 65 for rotatably housing the rotor 60 is formed between them. Also, this rotor chamber 65
Permanent magnets 61a and 61b are housed in the inner wall of the.

Below the rotor chamber 65, the terminal contact piece 6 is provided.
A contact piece chamber 66 for accommodating 2, 63 is provided. The contact pieces 62, 63 for terminals are integrally formed with the insert piece 62b,
63b is an insertion portion 66a, 66 formed in the contact piece chamber 66.
It is inserted in b and is further sandwiched and attached between the main body base 13 and the front cover 14. Since the insertion pieces 62b and 63b are formed with the cutouts on the three sides, and the locking pieces 62c and 63c that are elasticized by being formed, are formed.
Insertion pieces 62b, 63 inserted in the insertion portions 66a, 66b
b does not come off easily and is easy to assemble. In addition, the contact pieces 62, 63 for terminals have contact piece portions 62a, 6
The contact pieces 62a and 63a are attached to the contact piece chamber 66 so that the contact pieces 3a come into contact with each other, and the shaft 60a of the rotor 60 is sandwiched between them so that the contact piece portions 62a and 63a contact the shaft 60a with an appropriate pressing force. Become.

A gear chamber 75 is provided above the rotor chamber 65. In the gear chamber 75, a pinion gear 76 fitted on the shaft 60 a of the rotor 60, a lower gear 77 pivotally supported by a pin 79 and meshing with the pinion gear 76, and a winding gear 38 integrally formed with the lower gear 77.
An upper gear 78 that meshes with is stored. In FIG. 4, when the rotor 60 rotates counterclockwise, the lower gear 77 rotates clockwise, and the winding gear 38 meshed with the upper gear 78 rotates counterclockwise. This allows
The spool 17a of the cartridge 17 engaged with the engaging portion 38b of the winding gear 38 holds the film 18 which has been photographed.
Wind up by one frame.

The bearing method of the rotor 60 is as follows:
3 and the front cover 14 are formed by projecting pieces 81 and 82. As shown in FIG. 10, the protruding pieces 81 and 82 are formed by shifting their positions in the vertical direction, and are provided with notches 81a and 82a in the center. Further, the main body base 13 is formed with a recess 83 into which the protruding piece 82 is fitted, and the front cover 14 is formed with a recess 84 into which the protruding piece 81 is fitted. When the main body base 13 and the front cover 14 are combined, the projecting piece 81 becomes the concave portion 84.
The protruding piece 82 is fitted into the concave portion 83. At this time, the notch 81a and the notch 82a are partially overlapped to form an opening, and the opening 60 supports the shaft 60a rotatably. The protruding pieces 85 and 86 that also support the rotor 60 below have the same structure as the protruding pieces 81 and 82, and their vertical positions are reversed.

The bearing for supporting the lower end of the shaft 60a of the rotor 60 is, as shown in FIG. 11, a projecting piece 88, a notch 89 formed on the front cover 14, and a main body base 1.
It is composed of a concave portion 90 and a notch 91 formed in 3. When the main body base 13 and the front cover 14 are combined, the protruding piece 88 is fitted into the recess 90, and the notch 89 and the notch 91 form a hole. The shaft 60a is supported by the notches 89 and 91 and the protruding piece 88.

As shown in FIG. 3, the rear cover 15 is provided with a film support surface 95 for supporting the back surface of the film 18 between the cartridge chamber 23 and the film roll chamber 24. A finder eyepiece window 9a is formed above the film supporting surface 95, and framing is performed through this window during photographing. Pull-top lids 15a and 15b for covering the bottom surfaces of the cartridge storage chamber 23 and the film roll chamber 24 are provided on the bottom side of the rear cover 15, respectively. The lid 15a serves as a take-out lid for taking out the cartridge 17 containing the exposed film 18.

Next, the operation of the above embodiment will be described.
The unit main body 3 is completed by the main body base 13 made of plastic being conveyed, and various components being assembled during the conveyance. The rotor chamber 65 composed of the main body base 13 and the front cover 14 has permanent magnets 61 a, 61 on its inner wall.
b, the contact pieces 62 and 63 for terminals are attached to the contact piece chamber 66. The terminal contact pieces 62, 63 are attached by inserting the insertion pieces 62b, 63b into the insertion portions 66a, 66b, respectively. Also, the insertion pieces 62b, 6
Since 3b is formed with locking pieces 62c and 63c that are locked inside the insertion portions 66a and 66b, it is not easily disengaged and is easy to assemble.

On the front side of the main body base 13, internal mechanisms such as the exposure unit 26 and the strobe unit 70, which are assembled on another assembly line, are assembled. Further, in the notches 81a and 91 of the rotor chamber 65, a shaft 60a of the rotor 60 having a pinion gear 76 attached to the tip thereof.
Is fitted. In this state, the front cover 14 is attached to the main body base 1
3 is attached to the front side of the protruding piece 82 of the front cover 14.
In the concave portion 83 of the main body base 13 and the protruding piece 8 of the main body base 13.
1 is fitted into the concave portion 84 of the front cover 14, and the notch 81a
The shaft 60a is rotatably supported by the opening formed by the notch 82a and the notch 82a partially overlapping each other. Also, the shaft 60
At the lower end of the a, the protruding piece 88 of the front cover 14 is
It is fitted in the concave portion 90 of and is rotatably supported in the hole formed by the notches 89 and 91. At this time, the contact piece portions 62a and 63a of the terminal contact pieces 62 and 63 are connected to the shaft 60.
It is brought into contact with a with an appropriate pressing force.

Thereafter, in the dark room, the main body base 13 is loaded with the film 16 with a cartridge from the back side, and the rear cover 1
5 is assembled. Then, the dry battery 52 is loaded and the unit body 3 is completed. In this unit body 3,
The shutter mechanism inspection and film winding inspection are performed,
The passed unit body 3 is covered with the outer case 4 to form the lens-fitted film unit 2.

The completed film unit 2 as shown in FIG. 2 is stored in a moisture-proof bag for light-shielding and moisture-proof, and is sold.
The film may be wasted by pressing and releasing the shutter. In order to prevent this, the shutter button 6 is pressed with the main switch 7 set to the "OFF" side in FIG. In this state, as shown in FIG. 6, the cam portion 7b of the main switch 7 pushes the slope 48a of the first contact piece 48 to the back side, so that the circuit of the motor portion 25 is opened to prevent rotation.

A user who purchases the lens-fitted film unit 2 can remove the lens-fitted film unit 2 from the moisture-proof bag.
The main switch 7 is taken out, and the main switch 7 is slid to the “ON” side in accordance with the explanation written on the moisture-proof bag or outer cover. Then, as shown in FIG. 6, the first contact piece 48 is released from the pressing force from the cam portion 7b and returns to the front surface side by its elasticity. Then, it is brought into contact with the second contact piece 49. This allows
The circuit is closed and power supply to the motor unit 25 is started.

When the terminal brushes 62 and 63 of the motor section 25 are energized, the rotor 60 is moved to the permanent magnets 61a and 61b.
4 starts to rotate in the rotor chamber 65 in the counterclockwise direction in FIG. By the pinion gear 76 rotated counterclockwise, the winding gear 38 is rotated counterclockwise via the lower gear 77 and the upper gear 78. The rotation of the winding gear 38 also rotates the spool 17a of the cartridge 17 meshed with the engaging portion 38b in the counterclockwise direction. The film 18 is wound up in the cartridge 17 by the rotation of the spool 17a. At this time, the driven sprocket 36 shown in FIG. 5 is rotated counterclockwise by meshing with the perforation 18a of the film 18.

The rotation of the driven sprocket 36 causes the rotation member 33 to rotate in the same direction. One end 3 that is in contact with the shutter charge cam 33b by the rotation of the rotating member 33
0a is pushed, and the shutter drive lever 30 is rotated clockwise against the bias of the spring 31. Then, when the claw portion 32b of the locking lever 32 enters the groove portion 33e of the unwinding cam 33a, the rotation of the driven sprocket 36 is locked via the rotating member 33. Further, at this time, the locking lever 32 is slightly rotated clockwise, so that the locking lever 32 and the shutter drive lever 30 are engaged with each other, and the shutter is charged.

Further, when the locking lever 32 is rotated clockwise, the meshing portion 32d of the locking lever 32 is moved to the hoisting gear 38.
Is engaged with the tooth row 38a. At the same time, as shown in FIG. 6, the pin 32e of the locking lever 32 presses the first contact piece 48 toward the back side and contacts the tip portion 50a of the third contact piece 50.
As a result, the motor unit 25 is short-circuited and the rotation is stopped.

The user can use the finder eyepiece window 9a (see FIG. 3).
See) to check the subject and determine the composition. At this time, if the brightness of the subject is low, the strobe charging switch 11 is pressed to charge the strobe unit 70. When the shutter button 6 is pushed down after charging, the shutter button 6 is pushed down around the connecting portion 6a as shown in FIG. 6, and the release link 56 is moved to the right in the figure while slightly rotating by the bearing 57. . Due to the movement of the release link 90, the projection piece 56b causes the vertical piece 32a of the locking lever 32 to move.
Press to rotate the locking lever 32 counterclockwise.

When the locking lever 32 is rotated counterclockwise, the engagement between the protrusion 32c of the locking lever 32 and the rising piece 30b of the shutter drive lever 30 is released, as shown in FIG. The shutter drive lever 30 is rotated counterclockwise by the bias of the spring 31. At this time, the kick-off arm 30c kicks off the shutter blade 40, and the shutter blade 40 is rotated against the bias of the spring 43, and the exposure opening 44
Open up. As a result, the subject light that has passed through the taking lens 10 reaches the film 18 and is exposed.

At the same time, in FIG. 6, the locking lever 32
Is rotated counterclockwise, the pressing of the pin 32e on the first contact piece 48 is released. As a result, the first contact piece 48 returns to its original position due to its elasticity, and moves to the second contact piece 49 side. However, while the shutter button 6 is being pressed, the release link 56
Since the cam portion 56a of the first pressing portion 48a presses the slope 48a of the first contact piece 48, the first contact piece 48 and the second contact piece 49 are not in contact with each other, and the motor section 25 is not rotated.

After that, when the shutter button 6 is released, the first contact piece 48 comes into contact with the second contact piece 49, and the motor unit 2
Energization is started at 5. Then, as described above, the winding of the film by the rotation of the rotor 60, the shutter charging and the film winding stop are performed.

When the photographing is performed as described above and the photographing of all the frames of the film is completed, the film 18 is entirely wound up in the cartridge 17 and the motor portion 25 is continuously rotated. After confirming this, the user slides the main switch 7 to the "OFF" side to turn off the power, hands over the lens-fitted photo film unit 2 to the developing dealer, and requests simultaneous printing.

In addition to the rotor bearing method used in the above-described embodiment, as shown in FIG. 12, the shaft 60a has a notch 100 formed in the main body base 13 and a notch 101 formed in the front cover 14. It may be sandwiched.
Further, as a bearing at the lower end of the shaft 60a, when the pin 103 is provided in the recess 90 of the main body base 13 and the hole 104 is provided in the projecting piece 88 of the front cover 14, when the main body base 13 and the front cover 14 are combined, Pin 103 and hole 104
And may be engaged. Further, these bearing methods may be used in combination separately.

[0048]

As described above, the lens-fitted photo film unit of the present invention comprises a rotor, a pair of permanent magnets arranged so as to sandwich the rotor, and a pair of terminal brushes in contact with the shaft of the rotor. Since the motor component is directly incorporated between the main body base portion and the front cover to form the motor, the lens-fitted film unit can be made lighter and smaller and the cost can be reduced because the case is not used for the motor.

As a method of attaching the brushes, a pair of terminal brushes are attached to separate members, and these members are combined from the front and the rear so as to sandwich the rotor so that the terminal brushes come into contact with the shafts. Therefore, the terminal brush can be easily attached, and the assembling efficiency can be improved. Further, a pair of terminal brushes are attached so that they come into contact with each other when separate members are assembled from the front and rear, and the shaft of the rotor is sandwiched between these terminal brushes, so that the terminal brushes are crimped to the shaft. As a result, the contact between the terminal brush and the shaft of the rotor becomes more reliable, and the loss of power supply to the motor can be minimized for efficient rotation.

Further, as a method of bearing the rotary shaft, separate members for sandwiching the rotary shaft from the front and back are provided with bearing projections, respectively, and by combining these bearing projections, the rotary shaft is rotatably supported. Because I chose
The rotating shaft can be easily assembled and the assembling efficiency is improved.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of a motor section of a lens-fitted film unit.

FIG. 2 is a perspective view showing the outer appearance of a lens-fitted film unit.

FIG. 3 is an exploded perspective view showing a configuration of a unit main body.

FIG. 4 is an exploded perspective view of a main part of the unit main body.

FIG. 5 is an exploded perspective view showing a configuration of an exposure unit.

FIG. 6 is a perspective view showing a configuration of a main switch portion.

FIG. 7 is a perspective view showing a configuration of a motor unit.

FIG. 8 is a sectional view of an essential part of a rotor portion of a lens-fitted film unit.

FIG. 9 is a sectional view of an essential part of a contact piece for a terminal of a lens-fitted film unit.

FIG. 10 is an explanatory diagram showing a rotor bearing method.

FIG. 11 is an explanatory diagram showing a bearing method for the lower end of the rotor.

FIG. 12 is an explanatory view showing a rotor bearing method of another embodiment.

FIG. 13 is an explanatory view showing a bearing method of a rotor lower end according to another embodiment.

[Explanation of symbols]

 2 Film unit with lens 13 Main body base 14 Front cover 25 Motor part 60 Rotor 61 Permanent magnet 62, 63 Contact piece for terminals

Claims (4)

[Claims] 1. A photographing mechanism such as a photographing lens, a shutter mechanism, and a film winding mechanism including a motor is incorporated,
On the main body base where the film and the cartridge are stored in advance,
In a lens-fitted film unit to which a front cover is attached from the front side, a rotor, a pair of permanent magnets arranged so as to sandwich the rotor, and a pair of terminal brushes in contact with the shaft of the rotor, and a motor component as a main body part. A lens-fitted film unit characterized in that the motor is constructed by directly assembling the motor with a front cover. 2. A motor having a rotor in which a coil is wound around an iron core and a pair of terminal brushes that are in contact with a shaft of the rotor and supply electric power, wherein the pair of terminal brushes are attached to different members. A brush mounting method for a motor, characterized in that the terminal brushes respectively come into contact with the shaft by combining these members from the front and rear so as to sandwich the rotor. 3. The pair of terminal brushes are attached so as to come into contact with each other when separate members are assembled from the front and rear, and the shaft of the rotor is sandwiched between these terminal brushes, whereby The brush mounting method for a motor according to claim 2, wherein the terminal brush is crimped onto the shaft of the rotor. 4. A bearing method for rotatably supporting a rotating shaft, wherein each member for sandwiching the rotating shaft from the front and back is provided with a bearing protrusion, and the bearing protrusion is combined to form a rotating shaft. A bearing method characterized in that it is rotatably supported.