JPH05787B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a front-loading type record carrier container loading device that loads and takes out a record carrier container containing a record carrier from the front of a recording or reproducing device. It is something.

(Background Art) For example, in a recording or reproducing apparatus that records or reproduces information while forming recording tracks concentrically or spirally on a disc-shaped record carrier such as a magnetic sheet, a disc-shaped record carrier is used. A type in which a stored cassette is loaded into a cassette holder provided within the main body of the recording or reproducing apparatus by inserting the cassette from the front of the recording or reproducing apparatus is known as a front loading system.

According to this front loading method, the cassette is inserted into the cassette holder and the cassette is fixed by a clamping member provided on the cassette holder. A conventionally proposed device of this type will be described with reference to FIG. 1. Reference numeral 2 represents a cassette for storing a magnetic sheet (not shown), and 7 represents a cassette holder into which the cassette holder 2 is inserted. 69 and 70 are pins planted on the side of the cassette holder 7. 66
1 is a slide plate, which is provided with cam grooves 67 and 68 in the shape of a square, and pins 69 and 70 are slidably fitted into the cam grooves 68 and 67.

73 is a loading motor, 59 is a worm gear, 60 is a worm wheel, and 61 is a gear coaxially connected to the worm wheel 60, which is shown by a dotted line. Gears 62 and 63 mesh with the gear 61, and the rotation shafts of the gears 62 and 6 are provided with an arm 6 having long grooves 71 and 72 extending in the vertical direction.
4 and 65 are provided. These long grooves 71 and 72
Pins 70 and 69 are slidably fitted through cam grooves 67 and 68.

When loading cassette 2, insert cassette 2 into cassette holder 7 and turn loading motor 7.
3 is rotated, the rotational torque is transmitted through the worm gear 59 to the worm wheel 60 and the gear 6.
1 and rotate them counterclockwise. Gears 62 and 63 meshing with gear 61 are rotated clockwise, and arms 64 and 65 are engaged with gear 6.
It is rotated clockwise around rotation axes 2 and 63. As a result, the pins 69 and 70 installed on the side surface of the cassette holder 7 are guided by the cam grooves 68 and 67, move rightward and descend, and when they reach a predetermined position, a switch (not shown) is activated to lower the pins. The rotation of the ding motor 73 is stopped. In this way, the cassette holder 7 is lowered to a predetermined position, and
Cassette 2 is loaded. The ejection operation of the cassette 2 is carried out by the loading motor 73 in the opposite direction to that during loading.
The cassette holder 7 is rotated and the gear mechanism performs the reverse operation to the above-described loading operation, thereby raising the cassette holder 7 to a predetermined position.

The loading and unloading operations of the cassette 2 must be carried out slowly to avoid applying impact to the cassette, cassette holder, and its peripheral equipment. In order to increase the reduction ratio of gear 63 to gear 61, the diameters of gears 62 and 63 must be increased, and arms 64 and 65 are designed to extend pins 70 and 69 from the beginning to the end of cam grooves 67 and 68. Since it needs to be moved, it requires a certain length, and therefore the overall structure of the cassette loading device becomes large, which poses a problem in terms of compactness.

(Objective) The present invention solves the drawbacks of the prior art, and provides a simple structure for loading a record carrier storage container by moving it in the insertion direction and in a loading direction different from this. It is an object of the present invention to provide a recording carrier storage container loading device which is suitable for making the entire recording or reproducing device smaller and more compact, and particularly for making it flatter.

(Description of Embodiments) (FIGS. 2 to 9) Hereinafter, the means taken in the present invention to achieve the above object will be illustrated and explained using the embodiments shown in the figures.

In the following embodiments, a loading device for a record carrier storage container storing a magnetic sheet in which the record carrier is a disk-shaped record carrier is described, but the present invention is applicable to a magnetic type, optical type, or capacitance type. In addition to devices that use disks or sheet cassettes,
Of course, the present invention can be applied to devices using tape cassettes such as VCRs.

2 to 9 show an embodiment of the cassette loading device of the present invention, FIG. 2 is a perspective view of the cassette and the cassette loading device, FIG. 3 is a top view thereof, and FIG. 4 a
4 is a side view of the cassette and the gear mechanism of the cassette loading device during insertion, and FIG. 5 is a side view of the gear mechanism of the second slide plate that is moving while holding the cassette; FIG. 6 is an explanatory diagram of the operating state of the center core pressing member and pad; and FIG. 7 is the loading motor. FIG. 8 is a configuration diagram of a cassette insertion detection switch and a cassette ejection completion detection switch, and FIG. 9 is a perspective view of a specific example of a one-way clutch provided in a gear unit.

An embodiment of the present invention will be described with reference to FIGS. 2 and 3.

1 is a magnetic sheet which is a disc-shaped record carrier; 2 is a cassette which is a record carrier storage container for storing the magnetic sheet 1; 3 is a synthetic resin center core attached to the center of the magnetic sheet 1; 4 is a center core 3. This is the PG pin used for pulse generation embedded in the . Reference numeral 5 designates a spindle insertion hole into which the spindle of a seat rotation motor provided around the center core 3 of the cassette 2 is inserted, and 6 designates a pad insertion window provided in the cassette 2, which will be described later. A magnetic head insertion window is provided on the lower surface where the pad insertion hole 6 provided in the magnetic head is located.

Reference numeral 7 designates a cassette holder which is a record carrier storage container holding means for storing the cassette together with a second slide plate 31 (to be described later) which holds the inserted cassette 2, and has two pins 12 on its side surface, as shown in FIG. There are also two pins 12' on the other side as shown in
has been planted. Reference numeral 8 denotes side plates which are fixed to the chassis of the main body of the recording or reproducing apparatus (not shown) with fixing members such as screws, and are disposed on both sides of the cassette 2. Reference numeral 9 indicates a long groove formed in two places in the side plate 8 and extending in the vertical direction, and 16 also indicates a long groove formed in the side plate 8.
It is a long groove that has one hole drilled in it and extends in the vertical direction. These long grooves 9 and 16 do not prevent the vertical movement of two pins 12 set on the side of the cassette holder 7 and one pin 17 set on the side of the pad 44, which will be described later. It has a function. Note that the other side plate 8 is also provided with two long grooves 9 except for the long groove 16. 10
is a first sliding plate which is adjacent to the side plate 8 and which operates as a first moving means and has a rack 11 fixedly attached to one lower end thereof. This first slide plate 10 has two long grooves 15 extending horizontally.
, two cam grooves 13 having a "〓" shape and controlling the vertical movement of the cassette holder 7, and a large cam groove 13 having a similar shape to the cam grooves 13 and controlling the vertical movement of the pad 44. A cam groove 18 is provided. Similarly, attach the rack 11' to the other side plate 8.
is fixedly installed, and two long grooves 15 and two cam grooves 13 for controlling the vertical movement of the cassette holder 7 are also provided (FIG. 3). 14 limits the sliding amount of the first slide plate 10, and
This pin is a pin for guiding the sliding movement of the first slide plate 10 along the side plate 8, and this pin 14 is installed in the side plate 8 and is slidably engaged in the long groove 15 of the first slide plate 10. It matches. Such a pin 14 is similarly planted on the other side plate 8 and is engaged with the long groove 15 of the first slide plate 10. Reference numeral 17 denotes a pin installed on the side surface of the pad 44, and is slidably engaged with the long groove 16 of the side plate 8 and the cam groove 18 of the first slide plate 10. Reference numeral 19 denotes a first slide plate 10 and a second slide plate 10, which will be described later.
This is a loading motor for loading or unloading the cassette 2 by sliding the slide plate 31 of the cassette 2. A worm gear 20 is rotated by the loading motor 19. 21 is a worm wheel that meshes with the worm gear 20, 22 is a gear coaxially connected to the worm wheel 21, and 23 is a gear 2.
2, and the worm wheel 21
The drive torque is applied from the gear 22 which rotates coaxially, and the drive torque rotates.

The loading motor 19, the worm gear 20, the worm wheel 21, and the gear 22 are connected to a gear unit 24, which is a first driving means for moving a recording carrier storage container holding means, which will be described later, in the insertion direction of the container, that is, the cassette 2, and A rack 11 fixed to the first slide plate 10 constituting a second driving means for moving the recorded record carrier storage container holding means in the loading direction, a gear 26 that meshes with this rack, and a built-in side surface of the cassette holder 7. This constitutes a driving source that commonly drives the cam groove 13 provided in the first slide plate 10 with which the pin 12 is engaged.

The rotational torque of the gear unit 24 is transferred to the second slide plate 3, which constitutes a part of the cassette holder 7, through a rack 29 fixed to the second slide plate 31.
The rotation of the gear 23 is transmitted to the rack 29, and the movement of the rack 29 is transmitted to the gear 23.
is equipped with a one-way clutch that does not transmit power (an example of a one-way clutch is explained in FIG. 9). In addition, the first slide plate 1
0, the rotation of the loading motor 19 is applied to the rack 11 via the worm gear 20, the worm wheel 21, the first partially toothed gear 25, the second partially toothed gear 27, and the gear 26. A or B
be slid in the direction. The gear shafts 37, 40, and 41 that slide the first slide plate 10 and the second slide plate 31 are pivotally supported by a chassis 51 shown in FIG. 3.

Reference numeral 28 denotes a lever, which is coaxially connected to the first partially toothed gear 25 and the second partially toothed gear 27, and includes a rack 29 fixed to a second slide plate 31, which will be described later.
The lever 57 on the side of the lever 57 moves in the direction of arrow A and comes into contact with the lever 28 to rotate clockwise, thereby rotating the first partially toothed gear 25 and the second partially toothed gear 27 clockwise. They mesh with gears 22 and 26, respectively.

In addition, the lever 28, the first and second partially toothed gears 25
and 27, and a rack 57 fixed to the side surface of the second slide plate 31, which acts as a control means for switching and operating the second driving means for moving the inserted cassette 2 in the loading direction. It is.

The first toothless gear 25 and the second toothless gear 27 are integral, and the position of the toothless portion is as follows:
As shown in FIG. 4b, which will be described later, in the clockwise rotation direction, the angles in the circumferential direction of the toothless portions of the first toothless gear 25 and the second toothless gear 27 are the same; The clockwise end of the toothless portion of the first toothless gear 25 precedes the clockwise end of the toothless portion of the second toothless gear 27. Therefore, when the lever 28 is rotated clockwise due to contact with the lever 57, the first partially toothed gear 25 and the second partially toothed gear 27 are simultaneously rotated clockwise, and the first The partially toothed gear 25 meshes with the gear 22, and then the first partially partially toothed gear 25 is rotated clockwise by the gear 22, so that the second partially partially toothed gear 27 meshes with the gear 26.

Reference numeral 30 denotes a rotating shaft that connects gears 26 and 26' which are respectively meshed with racks 11 and 11' fixed to the first slide plate 10, and one of the first slide plates 10 and the other A driving force is transmitted to simultaneously slide the first slide plate 10 in the same direction.

Next, a description will be given of the second slide plate 31, which constitutes a record carrier storage container holding means that includes a cassette holding means to be described later and is movable in the cassette insertion direction and the loading direction. Second slide plate 3
A leaf spring 34, which is an elastic member attached to 1 and has a free end 34a, and a cassette receiving part 35.
The leaf spring 34 constitutes a cassette holding means.
The cassette 2 is held between the cassette 2 and the cassette receiving part 35. The free end 34a of the leaf spring 34 is at the position immediately before being regulated by the regulating part 36, which is a position regulating means provided at the tip of the cassette holder 7 (the first position).
The second slide plate 31 is manually pushed in to the position shown in FIG.
As a result, the second slide plate 31 performs a retracting operation with respect to the cassette holder 7, and the position of the free end 34a of the leaf spring 34 is regulated by the regulating part 36, and the second slide plate 31 is retracted into the lower surface of the cassette holder 7, thereby applying a clamping force to the cassette 2. and grips cassette 2 with great force.

In this way, the second slide plate 31, which is the record carrier storage container holding means provided with the cassette holding means, is moved in the direction in which the cassette 2 is inserted.

Reference numeral 32 designates a pin for guiding the sliding movement of the second slide plate 31 in the direction of arrow A or B, and is mounted on the cassette holder 7. 33 is a long groove formed in the second slide plate 31 and has a shape that extends long in the direction of movement of the cassette holder 7;
The pin 32 is engaged with this long groove 33. The above-described leaf spring 34 is attached to the upper tip of the second slide plate 31, and the cassette receiving portion 35 is provided to the lower tip of the second slide plate 31. The cassette 2 is held between the leaf spring 34 and the cassette receiving portion 35 (FIG. 5). Reference numeral 29 denotes a rack fixed to the second slide plate 31, and a lever 57 is installed on the side surface of the rack, which moves with the sliding movement of the second slide plate 31 in the direction of arrow A or B. When the second slide plate 31 slides in the direction of the arrow A, the rack 29 moves in the direction of the arrow A, bringing the lever 57 into contact with the lever 28 and moving the rack 29 together with the first partially toothed gear 25 and the second partially toothed gear 27. Rotated clockwise. The rack 29 meshes with the gear unit 24.

Gear shafts 37, 40 and 41 shown in FIG.
5, the second partially toothed gear 27, and the lever 28, and the gear shaft 41 pivotally supports the gear 23, respectively. 38 is a retaining ring that connects the gear unit 24 and the gear shaft 37.
is established between.

42 is a detection yoke which is a component of a pulse generator that detects the rotational phase of the magnetic sheet 1 by detecting the PG pin of the magnetic sheet 1; 43 is a support arm to which the detection yoke 42 is attached; and the pad 44
It is connected to the pad 44 and moves up and down together with the pad 44. This pad 44 performs a downward movement to closely oppose the upper surface of the magnetic sheet 1 through the pad insertion window 6 of the cassette 2, thereby stabilizing the contact state between the magnetic head 56 and the magnetic sheet 1 which abut the lower surface. Reference numeral 45 denotes a guide shaft that penetrates inside the pad 44 and is erected on the mounting chassis 58. (Figure 6).

46 connects the center core 3 of the magnetic sheet 1 in the cassette 2 to the spindle 53 of the sheet rotation motor 54.
This is a center core pressing member for mounting on. 4
A support shaft 7 rotatably supports the center core pressing member 46, and is fixed to a chassis (not shown). 49 is a direct-acting cam, which is fixed to the side surface of the other first slide plate 10. 48 is an arm bent end 48' (sixth
It is a pin set up in the figure) and is in contact with the direct-acting cam 49. 50 is a spring, and the center core pressing member 46
The end 48' provided on the pin 48 is stretched between the bent end 48' of the pin 48 and a chassis (not shown).
8' is always directed downward, that is, as shown in FIG. 6, the pressing member 46 is urged counterclockwise about the shaft 47.

Figures 4a and 4b show the operating states of the cassette and gears during insertion; in Figure 4a, cassette 2
is inserted into the cassette holder 7 from the direction of arrow C, the tip of the cassette 2 is held between the leaf spring 34 provided on the second slide plate 31 and the cassette receiving part 35, and then the cassette is inserted by hand in the direction of arrow A. 2
Push in. At this point, the loading motor 19 has not yet been activated. Loading motor 1
The worm gear 20 meshes with the worm wheel 21, the gear 22 coaxially connected with the worm wheel 21 meshes with the gear 23, and the gear 23 meshes with the gear unit 24. Second
Since the lever 57 provided on the side surface of the rack 29 fixed to the slide plate 31 is in a position not shown, the lever 28 coaxially connected to the first partially toothed gear 25 is rotated clockwise by the lever 57. First, the toothless portion of the first toothless gear 25 faces the gear 22, and the gear 22 and the first toothless gear 25 do not mesh with each other.

Regarding the second toothless gear 27, as shown in FIG. 4b, the toothless portion of the second toothless gear 27 is
6, the gear 26 and the second partially toothed gear 27 do not mesh with each other. Since the loading motor 19 is not activated, the first slide plate 10 is not performing a sliding operation, and therefore the first slide plate 10 does not perform a sliding operation, and therefore the first slide plate 10 does not perform a sliding operation.
2 is located above the cam groove 13.

FIG. 5 shows the state of the gear mechanism during driving when the cassette 2 is held between the leaf spring 34 and the cassette receiving part 35, is pushed further by hand, and then the loading motor 19 is started to draw the cassette 2. shows.

As shown in FIG. 4a, the second slide plate 31
The tip of the cassette 2 is held between the leaf spring 34 and the cassette receiving part 35, and then the tip of the cassette 2 is held in place by the arrow A.
push in the direction. This pushing action causes the second
The slide plate 31 slides in the direction of arrow A.
As a result, the rack 29 also moves in the direction of arrow A. Gear unit 2 meshing with rack 29
Since gear 4 is provided with a one-way clutch, it does not give any rotation to gear 23. Second
By sliding the slide plate 31 in the direction of arrow A, the leaf spring 34 and the cassette receiving part 35 are pulled in along the regulating part 36 while holding the cassette 2, and the free end 34a of the leaf spring 34 is pulled into the regulating part 3.
6, the position is regulated downward. That is, as shown in FIG. 5, when the free end 34a of the leaf spring 34 is fully retracted, the clamping force against the cassette 2 becomes extremely large. At a position (first position) immediately before the free end 34a of the leaf spring 34 is restricted by the restriction part 36, a cassette insertion detection switch (not shown) is activated and the loading 19 starts rotating.

When the loading motor 19 rotates in a predetermined direction, its rotational torque is applied to the gear 23 via the worm 20, worm wheel 21, and gear 22, and the gear 23 rotates clockwise. When the gear unit 24 is rotated counterclockwise due to the clockwise rotation of the gear 23, the one-way clutch provided in the gear unit 24 transmits the counterclockwise rotation to the rack 29.
9, the second slide plate 31 further moves in the direction of arrow A.
be moved in the direction

On the other hand, the lever 5 provided on the side of the rack 29
7 also moves in the direction of arrow A and comes into contact with lever 28,
Rotate this clockwise. This allows the first
The partially toothed gear 25 and the second partially toothed gear 27 rotate clockwise, and the first partially toothed gear 25 meshes with the gear 22. Then, the gear 22 connects the first partially toothed gear 2.
When the gear 5 is rotated clockwise, the second partially toothed gear 27 is also further rotated clockwise and meshes with the gear 26. Therefore, the rotation of the loading motor 19 is controlled by the rack 1 via the worm gear 20, the worm wheel 21, the gear 22, the first partially toothed gear 25, the second partially toothed gear 27, and the gear 26.
1, and the first slide plate 10 is moved in the direction of arrow A.
Start sliding in the direction. First slide plate 1
0 begins to slide in the direction of arrow A, the pin 12 set on the side of the cassette holder 7 and the pin 17 set on the side of the pad 44 align with the long grooves 9 and 1.
6. Since they are guided downward by the cam grooves 13 and 18, the cassette holder 7 and pad 44 begin to move downward together with the second slide plate 31. At this time, the rack 29 descends together with the second slide plate 31, so the rack 29 and gear unit 24
The mesh becomes disengaged. In this way, the first
The driving connection between the gear unit 24, which is a driving means, and the first slide plate 31, which is a record carrier storage container holding means provided with the above-mentioned cassette holding means, is easily interrupted.

Note that when taking out a cassette, as the cassette holder 7 rises, the second slide plate 3
1 also rises, and the rack 29 and gear unit 24 are easily engaged.

Referring to FIG. 6, the structure of the pad 44 and center core pressing member 46 will be explained.

The pad 44 is located at the arrow A on the first slide plate 10.
It is lowered by the sliding movement in the direction, and descends along the guide shaft 45 from the initial position shown by the two-dot chain line to the position shown by the solid line. As the pad 44 is lowered, the detection yoke 42 and the detection coil 52, which are components of the pulse generator attached to the support arm 43, are lowered together to face the PG pin 4 embedded in the center core 33.

Moreover, the center core pressing member 46
By positioning the direct-acting cam 49 fixed on the side surface of the slide plate 10 from the low-lift surface to the high-lift surface, the cam 49 rotates in the direction of arrow D about the rotation center axis 47, as shown by the two-dot chain line. The tip 4 of the center core pressing member 46 is moved from the position shown by the solid line to the position shown by the solid line.
6' applies a pressing force to the center core 3 to force it into the spindle 53 of the seat rotation motor 54.
Then, as the linear cam 49 further moves in the direction of arrow A as shown in FIG. Return to position. Note that if the low lift surface on the left side of the high lift surface of the direct-acting cam 49 is configured to be slightly higher than the low lift surface on the right side, the center core pressing member 46 will be placed at a position slightly away from the position indicated by the solid line. It can be held in an elevated state.
In this case, the direct-acting cam 49 moves the center core pressing member during the remaining sliding stroke of the first slide plate 10 in the direction of arrow A after the cassette holder 7 is lowered to the loading position (second position). 4
6.

Note that a magnet 55 is provided on the spindle 53 and exerts a magnetic attraction force on a soft magnetic member (not shown) embedded in the center core 3, thereby facilitating mounting and positioning of the center core 3.

FIG. 7 shows an example of a control circuit for the loading motor 19 for performing the above-described cassette loading and unloading operations.

In the figure, SW _M is the main switch, which is connected to the power supply +V _CC via resistor _R1 . SW _C
is provided, for example, in a part of the cassette holder 7 shown in FIGS. 2 and 3, and when the second slide plate 31 slides in the direction of the arrow A, the free end 34a of the leaf spring 34 comes into contact with the restriction part. A normally open type cassette insertion detection switch is provided to be opened by the second slide plate 31 immediately before the cassette insertion detection switch engages with the main switch SW M and is connected in series with the main switch SW _M together with the resistor R ₂ . It is connected. SW _L is
For example, the first slide plate 1 shown in FIGS. 2 and 3
A normally closed cassette loading completion detection switch is provided to be opened by the first slide plate 10 at the end position of the slide operation in the direction of arrow A of 0, and is connected in series with the main switch SW _M together with a resistor _R3 . It is connected to the. SW _E is a normally closed eject switch that is opened by operating an eject key (not shown), and is connected in series with the main switch SW _M together with a resistor _R4 .
SW _U is provided, for example, in a part of the cassette holder 7 shown in FIGS. This is a normally closed type cassette ejection completion detection switch that is provided to be opened by the second slide plate 31 after the cassette ejection is removed from the regulating portion 36 and the clamping force _{is weakened.}
It is connected in series with the main switch SW _M. FF ₁ is set when the potential at the connection point between cassette insertion detection switch SW _C and resistor R ₂ changes from high to low, and then the potential at the connection point between cassette loading completion detection switch SW _L and resistor R ₃ changes from high to low. The first RS flip-flop, FF ₂ , of the falling synchronization type, connected so as to be reset by a high-to-low transition, is connected to the high-to-low transition of the potential at the connection point between the eject switch SW _E and the resistor R ₄ . After the cassette ejection completion detection switch is set due to
a second falling synchronous RS flip-flop connected to be reset by a change in potential from high to low at the connection point between SW _U and resistor _R5 ;
The MCC responds to the high level of the Q output of the first FF ₁ by rotating the loading motor 19 in the normal direction (clockwise rotation in the above example) for loading the cassette.
In response to the high level of the Q output of the second FF ₂ , the loading motor 19 is reversed (rotated counterclockwise) for ejection, and the Q output of the first FF ₁ and the second FF ₂ is This is a motor control circuit configured to stop the loading motor 19 in response to a low level.

In the above configuration, when loading a cassette, after closing the main switch SW _M , the cassette 2
By inserting and pushing slightly, the second slide plate 31 slides in the direction of arrow A, and the leaf spring 34
When the free end 34a of the cassette insertion detection switch SW _C
Since FF1 is opened, the first FF ₁ is set and its Q output becomes high level. As a result, the motor control circuit MCC rotates the loading motor 19 in the forward direction for loading the cassette. As a result, the operations for loading the cassette described above are performed. Then, at the end of cassette loading, when the first slide plate 10 reaches the end position of the sliding movement in the direction of arrow A and the cassette loading completion detection switch _SWL is released, the first FF ₁ is reset. The Q output becomes low level, and the motor control circuit MCC stops normal rotation of the motor 19.

Next, when ejecting the cassette, when the eject key (not shown) is operated to release the eject switch SW _E , the second FF ₂ is set and its Q output becomes high level. This causes the motor control circuit MCC to reversely rotate the motor 19 to eject the cassette. As a result, the operations for ejecting the cassette described above are performed. At the end of cassette ejection, the second slide plate 31 moves toward arrow B.
When the free end 34a of the leaf spring 34 separates from the regulating part 36 and a part of the cassette 2 protrudes from the exterior of the recording or reproducing apparatus, the cassette ejection completion detection switch is activated.
Since SW _U is opened, the second FF ₂ is reset and its Q output becomes low level. As a result, the motor control circuit MCC stops the reverse rotation of the loading motor 19.

FIG. 8 shows a specific example of the switches SW _C and SW _U described above and their arrangement, and is a view of the cassette holder 7 seen from below the second slide plate 31.

In the figure, conductor patterns P ₁ and P ₂ are provided on the lower side of the upper surface of the cassette holder 7, that is, on the ceiling surface.
The conductor patterns P ₁ and P ₂ are provided on a surface covered with an insulating member. The sliding brushes BR ₁ to _{BR 4} are fixed to the upper surface of the second sliding plate 31 with fixing members such as screws, but the second sliding plate 31 is coated with an insulating material so that the entire second sliding plate 31 does not exhibit conductivity. provided on the surface. The brushes BR ₁ and BR ₂ constitute a switch SW _C , and the brushes BR ₃ and BR ₄ constitute a switch SW _U. Note that x indicates the cassette ejection completion position, and y indicates the cassette manual insertion completion position. With this configuration, the switches BR ₁ to _{BR 4} provided on the second slide plate 31 are connected to the second slide plate 31.
The switch SW C slides with the sliding movement in the direction of arrow A or B. In the sliding movement in the direction of arrow A, switch SW _C is released at the manual insertion completion position, and in the sliding movement in the direction of arrow B, switch SW C is released.
SW _U is opened at the ejection completion position. The arrangement of these switches is such that the brushes BR 1 to BR 4 are placed on the ceiling of the cassette holder 7 and the brushes BR ₁ to BR ₄ are placed on the second slide plate 31.
It is also possible to provide conductor patterns P ₁ and P ₂ on the top surface.

FIG. 9 shows a perspective view of the gear unit 24 with a one-way clutch.

In the figure, 29 is a rack provided on the second slide plate 31, and 59 is a gear that meshes with the rack 29. 60 has a notch 61, and the gear 5
This is a flange integrally constructed with 9. 62 is a coil spring. Reference numeral 64 denotes a gear for transmitting driving force, which meshes with the gear 23 as shown in FIG. 65 is a cylindrical portion formed integrally with the gear 64, and 62 is a coil spring, the bent portion 63 of which fits into a notch 61 provided in the flange 60. Incidentally, reference numeral 37 denotes a gear shaft for pivotally supporting the gear unit 24 having such a mechanism on the chassis 51, as shown in FIG.

Next, the operation will be explained. When the cassette 2 is manually inserted, the rack 29 moves in the direction of arrow A together with the second slide plate 31. As a result, the gear 59 rotates counterclockwise around the gear shaft 37. At the same time, the flange 60 integrally formed with the gear 59 also rotates counterclockwise, and the coil spring 62 fitted in the notch 61 of the flange 60 also rotates counterclockwise.
However, since this rotational direction is the direction in which the inner diameter of the coil spring 62 widens, rotational torque is not transmitted to the gear 64 and the cylindrical portion 65 integrally formed therewith, and the rotational torque is not transmitted to the gear 59, the flange 60, and the notch portion. 61 and the coil spring 62 idle. Next, when rotational torque is applied from the gear 23 meshing with the gear 64 and the gear 64 is rotated counterclockwise, the cylindrical portion 65 integrally configured with the gear 64
also rotates counterclockwise. This rotates in such a way that the coil spring 62 is wound around the cylindrical part 65, so a frictional force acts on the coil spring 62 and the cylindrical part 65, and the inner diameter of the coil spring becomes smaller. coil spring 62, bent part 63, notch part 61, flange 60, gear 5
9, a driving force is applied to the rack 29 to move it in the direction of arrow A.

When the cassette 2 is ejected, the gear 64 is given rotational torque by the gear 23 and rotates clockwise, but this direction of rotation is controlled by the coil spring 62.
This is a rotation in the direction of expanding the inner diameter of. By the way, a one-way clutch has the characteristic of transmitting driving torque for rotation in one direction and not transmitting driving torque for rotation in the opposite direction. Under conditions where the load applied to the gear to which force is applied is large, driving torque can be transmitted even for rotation in the opposite direction. Therefore, due to the fact that there is a slight frictional force between the coil spring 62 and the cylindrical portion 65, the weight of the cassette 2 applied to the rack 29, and the load caused by the friction between the second slide plate 31 and the cassette holder 7, etc. The one-way clutch also has a large load due to the gear train of the gears 23 and 22, the worm wheel 21 and the worm gear 20, the first partially toothed gear 25 and the second partially toothed gear 27, which are applied to the gear 64 side. The rack 29 can be moved in the direction of arrow B by generating idling torque.

(Cassette loading operation) Next, the cassette loading operation will be explained.

In Figure 4a, move the cassette by hand to arrow C.
Insert the cassette 2 into the cassette holder 7 from the
The tip of the cassette is held between the leaf spring 34 and the cassette receiving part 35. Then, when the cassette 2 is further pushed in the direction of the arrow A by hand, the second slide plate 31 moves in the direction of the arrow A along the long groove 33 that is slidably engaged with the pin 32 set in the cassette holder 7.
be slid in the direction. At this time, the rack 29 fixed to the second slide plate 31 also moves in the direction of arrow A, but no driving torque is applied to the gear 23 by the one-way clutch provided in the gear unit 24 that meshes with the rack 29. . When the cassette 2, held between the leaf spring 34 and the cassette receiving part 35, is further pushed in by hand in the direction of arrow A, the free end 34a of the leaf spring 34 is pushed down by the restriction part 36, resulting in the state shown in FIG. A cassette insertion detection switch (not shown) is activated at the position just before that (first position). This results in
Power is supplied to the loading motor 19, and the loading motor 19 rotates, for example, in a clockwise direction. Therefore, the worm wheel 2 through the worm gear 20
1 and gear 22 in a counterclockwise direction, thus gear 23
is given a clockwise rotation, and the gear unit 24 is given a counterclockwise rotation. At this time, the one-way clutch provided in the gear unit 24 applies rotational torque to the rack 29 from the gear 23, so that the rack 29 continues to move in the direction of arrow A. The second slide plate 31 is slid in the direction of arrow A along the long groove 33 that is slidably engaged with the pin 32.
In this process, the regulating portion 36 acts on the free end 34a of the leaf spring 34, so that
The cassette clamping force between the leaf spring 34 and the cassette receiving portion 35 increases.

The first partially toothed gear 25 and the second partially toothed gear 27 are
At the initial position, a spring and a positioning member (not shown) connect the toothless portion of the first toothless gear 25 and the gear 22,
The toothless portion of the second toothless gear 27 and the gear 26 are positioned to face each other (Fig. 4 a, b),
Therefore, even if the gear 22 rotates, the first partially toothed gear 25
and the second partially toothed gear 27 do not rotate.

As rack 29 moves in the direction of arrow A, lever 57 also moves in the direction of arrow A, comes into contact with lever 28, and rotates it clockwise as shown in FIG. As a result, both the first gear 25 and the second gear 27, which are coaxially connected to the lever 28, rotate clockwise. First, the first partially toothed gear 25 meshes with the gear 22 rotating counterclockwise, and the first partially partially toothed gear 25 is rotated clockwise. As a result, the second partially toothed gear 27 is also rotated clockwise, meshing with the gear 26, rotating the gear 26 counterclockwise, moving the rack 11 in the direction of arrow A, and moving the first slide plate 10 in the direction of arrow A. Move in direction A. The rotational torque of the gear 26 is the rotational torque of the rotational shaft 3.
0 to the gear 26' meshing with the rack 11' of the other first slide plate 10, which slides the other first slide plate 10 in the direction of arrow A, and also the linear drive cam 49. Move in the direction of arrow A.

Pin 12 planted on the side of cassette holder 7
The pin 17 planted on the side surface of the pad 44 is guided by the long grooves 9 and 16 and the cam grooves 13 and 18 and moves downward, whereby the cassette holder 7 and the pad 44 begin to move downward.

The second slide plate 31 is engaged and held by a pin 32 set on the cassette holder 7 and a long groove 33 provided on the second slide plate 31.
When the cassette holder 7 begins to descend, it descends, and at the same time the rack 29 also begins to descend. As the rack 29 descends, the gear unit 24 and the rack 29 are disengaged, and the second slide plate 31 is moved to the position indicated by the arrow A.
Stop sliding in the direction. The first slide plate 10 transfers the rotational torque of the loading motor 19 to the worm gear 20, the worm wheel 21, and the gear 2.
2. first partially toothed gear 25 and second partially partially toothed gear 27;
Since it continues to be applied to the rack 11 via the gear 26, it continues to move in the direction of arrow A, and the cassette holder 7
The pad 44 then lowers and stops moving when it reaches the loading position (second position).

Next, the functions of the center core pressing member 46 and pad 44 will be explained with reference to FIGS. 3 and 6.

The rotational torque of the loading motor 19 is applied to the gear 26 via the worm gear 20, the worm wheel 21 and the gear 22, the first partially toothed gear 25, and the second partially toothed gear 27. The rotational torque of this gear 26 is applied to the gear 26' via the rotating shaft 30,
Move the rack 11' in the direction of arrow A. As a result, the direct-acting cam 49 fixed to the side surface of the other first slide plate 10 also moves in the direction of arrow A. After the cassette holder 7 has descended to the loading position, when the high lift surface of the direct drive cam 49 is positioned relative to the pin 48 of the center core pressing member 46, the center core pressing member 46 moves in the direction of arrow D around the central rotation axis 47. It rotates, reaches the position shown by the solid line from the position shown by the two-dot chain line, and applies a pressing force to the center core 3 by the tip 46' of the center core pressing member 46.
The center core 3 is press-fitted into the spindle 53 of the seat rotation motor 54. As the first slide plate 10 further moves in the direction of arrow A, the pin 48 is positioned on the low lift surface of the direct drive cam 49, and the center core pressing means 46 rotates in the direction of arrow E.
It returns to the position indicated by the two-dot chain line.

When the cassette holder 7 is lowered, the pad 44 is guided by the guide shaft 45 as the first slide plate 10 slides in the direction of arrow A, and is lowered from the position shown by the two-dot chain line to the position shown by the solid line. In this way, the pad 44 closely faces the upper surface of the magnetic sheet 1, making it possible to improve the contact between the magnetic sheet 1 and the magnetic head 56. and,
When the first slide plate 10 reaches the terminal position in the direction of arrow A, a cassette loading completion detection switch (not shown) is activated and the rotation of the loading motor 19 is stopped.

Thereafter, the sheet rotation motor 54 is rotated to rotate the magnetic sheet 1, and the magnetic head 56 performs recording or reproduction on the magnetic sheet 1.

Note that during recording and reproduction, the magnetic head 56
is continuously or intermittently moved in the radial direction of the magnetic sheet 1 by the head moving table 56', as shown by arrows F and G in FIG.

(Cassette ejection operation) Next, the cassette ejecting operation will be explained.

When an unillustrated eject key or the like is operated, the rotation of the sheet rotation motor 54 is stopped, and an unillustrated eject switch (FIG. 7) is operated, and the loading motor 19 is rotated in the opposite direction to that when loading the cassette, for example. Start rotating counterclockwise. The counterclockwise rotation of the loading motor 19 causes the worm wheel 21 and gear 22 to rotate clockwise via the worm gear 20. gear 22
As a result of the clockwise rotation, the gear 23, the first partially toothed gear 25, and the second partially partially toothed gear 27 all rotate counterclockwise. The counterclockwise rotation of the gear 23 causes the gear unit 24 to rotate clockwise. The counterclockwise rotation of the second partially toothed gear 27 is caused by the gear 26
, and the gear 26 is rotated clockwise.
Due to the clockwise rotation of the gear 26, the rack 11 starts moving in the direction of arrow B, and the first slide plate 1
0 also starts sliding in the direction of arrow B. As a result, the center core pressing member 46 is first moved to the position shown by the two-dot chain line because the pin 48 is positioned from the low lift surface of the linear motion cam 49 to the high lift surface as the linear motion cam 49 moves in the direction of arrow B. The pin 48 rotates in the direction of arrow D and reaches the position shown by the solid line, and as the linear drive cam 49 continues to move in the direction of arrow B, the pin 48 is located on the low lift surface of the linear drive cam 49, as indicated by the two-dot chain line. Return to the indicated position. The pin 14 set on the side of the cassette holder 7 and the pin 17 set on the side of the pad 44 are connected to the long grooves 9 and 16 provided on the side plate 8, and the cam groove 13 provided on the first slide plate 10. and 18, the cassette holder 7 and pad 4 begin to rise.
Raise 4.

In this way, by sliding the first slide plate 10 in the direction of arrow B, the center core pressing member 46 returns to the initial position, and then the cassette holder 7 rises and returns to the initial position, and the pad 44 returns to the initial position. At the time of returning to the position, the meshing between the clockwise rotating gear 26 and the counterclockwise rotating second toothless gear 27 is released by the toothless portion of the second toothless gear 27. , the transmission of the driving torque to the gear 26 is cut off, and the first sliding plate 10 therefore stops its sliding operation.

On the other hand, as the cassette holder 7 rises, the second slide plate 31 also rises, and the rack 29 engages with the gear unit 24 again. Since the gear unit 24 is rotating clockwise in the opposite direction to the lowering operation of the cassette holder 7, the rack 29 is moved in the direction of arrow B. Since the gear unit 24 is provided with a one-way clutch, the idle torque of the one-way clutch is used to move the rack 29 in the direction of arrow B. slide plate 3
By taking into consideration the frictional load between the rack 29 and the cassette holder 7, rotational torque can be transmitted to the rack 29 without any hindrance during the ejection operation of the cassette 2.

As described above, the second partially toothed gear 27 and the gear 2
Even after the meshing with gear 6 is released, the first partially toothed gear 25 is still meshing with the gear 22.
The gear 22 rotating clockwise causes the first partially toothed gear 25, second partially toothed gear 27, and lever 28 to rotate counterclockwise, so that the first partially partially toothed gear 25
The toothless portion of the gear 22 faces the gear 22, which causes the first
The meshing between the gear 25 and the gear 22 is released, and the transmission of the driving force to the first gear 25 is cut off. Then, the first partially toothed gear 25, second partially toothed gear 27, and lever 28 are returned to the initial positions shown in FIGS. 4a and 4b by means of a spring and a positioning member (not shown).

Now, the rack 29 is the loading motor 19.
is still rotating, so gear unit 2
4, the second slide plate 31 also slides in the direction of arrow B, and the leaf spring 34 and cassette receiving part 35 move from the position shown in FIG. 5 to the position shown in FIG. 4a. However, at a position where the cassette 2 fully protrudes from the exterior of the recording or reproducing apparatus (not shown), a cassette ejection completion detection switch (not shown) is activated, thereby cutting off the power supply to the loading motor 19 and removing the cassette 2.
The ejection operation is completed.

(Effects) As explained above, according to the record carrier storage container loading device of the present application, a method is adopted in which the record carrier storage container is manually inserted into the device main body, and the container is inserted by a predetermined amount. Equipped with a container holding means that clamps and securely holds the container and pulls it into the device, which is advantageous in terms of space and ensures high reliability as it does not cause misalignment due to vibrations during the loading operation of the record carrier. A loading device can be realized.

Furthermore, when the record carrier storage container is not inserted, the driving force transmission between the drive source and the moving mechanism that moves the container holding means for transferring the container is cut off, and the container is held by the container holding means for a predetermined amount until the container is held by the container holding means. Since the container is connected to the drive source only after the container is inserted, the drive source does not become a load when inserting the container, improving operability.

Further, since the container holding means increases the clamping force on the container in the process of moving to the loading position, there are many advantages such as the container being prevented from being displaced and the loading operation being able to be carried out reliably.

[Brief explanation of the drawing]

FIG. 1 is a side view of a conventional cassette loading device, FIG. 2 is a perspective view of an embodiment of the record carrier storage container loading device of the present invention, FIG. 3 is a top view thereof, and FIG. 4a is a cassette during insertion. and a side view of the gear mechanism, FIG. Figure 6 is a side sectional view of the center core pressing member and pad in the initial position and loading position, Figure 7 is a control circuit diagram for the loading motor, and Figure 8 is the configuration of the cassette insertion detection switch and cassette ejection completion detection switch. The layout diagram, FIG. 9, shows a perspective view of one embodiment of a one-way clutch provided in a gear unit. In the figure, 7 is a cassette holder, 8 is a side plate, 9 is a long groove provided in the side plate, 10 is a first slide plate,
11 is a rack, 12 is a pin planted on the side of the cassette holder 7, 13 and 18 are cam grooves provided in the first slide plate 10, 19 is a loading motor, 20 is a worm gear, 21 is a worm wheel, 22, 23 and 26 are gears, 24 is a gear unit, 25 is a first partially toothed gear, 27 is a second partially toothed gear, 28 is a lever, 29 is a rack, 31 is a second slide plate, and 32 is a cassette holder. 7 is an erected pin, 33 is a groove provided in the second slide plate 31, 34 and 35 are leaf springs and cassette receivers provided in the first slide 10, and 36 is provided in the cassette holder 7. 44 is a pad,
46 is a center core pressing member, 48 is a pin, 49 is a direct-acting cam, and 57 is a lever.

Claims (1)

[Scope of Claims] 1. A recording or reproducing apparatus in which a record carrier storage container containing a record carrier is loaded from a removable mounting position to a recording or reproducing loading position; After being clamped and held, and moved from the attachment/detachment position in the insertion direction of the container, it is lowered in a substantially vertical direction and moved to the loading position, and in the process of moving to the loading position, the container is clamped and held. a container holding means that increases the force; a moving mechanism that moves the container holding means between the attachment/detachment position and the loading position; a drive source including a motor; the drive source and the moving mechanism are connected by the movement of the container holding means as the container is manually inserted, and the driving source is brought into operation, and the container holding means is moved. The container is moved in the container insertion direction by the driving force of the driving source and then lowered in the vertical direction to be loaded into the loading position, and when discharging, the driving source operates the moving mechanism to hold the container holding means. A record carrier storage container loading device comprising: power transmission control means that moves in a direction opposite to the insertion direction after rising from the loading position.