JPH0760546B2 - Cassette loading device - Google Patents

Description

The present invention relates to a front loading type cassette loading device for loading a cassette containing a magnetic tape such as a VTR.

[Conventional technology]

A front loading type cassette loading device for loading a cassette containing a magnetic tape such as a VTR,
There is one in which two cassettes, a standard cassette and a small cassette, which are large and small, are selectively mounted.

In such a cassette loading device, since the width dimension of the holder for loading the cassette is substantially equal to the width dimension of the standard cassette, the small cassette can be inserted in any position in the holder, and can be inserted in a predetermined regular position. There is a risk that it will not be done.

Therefore, for example, JP-A-63-146263 and JP-A-63-19
Japanese Patent No. 1347 or the like proposes a small cassette that can be inserted into a predetermined regular position.

The one described in JP-A-63-146263 has a cassette insertion detection member and a lock member which is interlocked with the cassette insertion detection member at both ends of the cassette insertion port having substantially the same size as the width direction size of the small cassette. A cassette insertion prohibition lid member is provided at a substantially central position of the detection member at the above-mentioned two places, and when the small cassette is inserted at a proper position, the detection member and the lock member at the above-mentioned two places are operated to prevent the cassette insertion prohibition lid member from being inserted. The opening is made possible for insertion and mounting, and when it is inserted at an irregular position, only the detection member on one side is activated, and the other detection member and the locking member disable the opening of the lid member.

However, not only the detection member, the lock member, the lid member and the like have a complicated structure and a large number of parts, resulting in a high cost,
Since the above-mentioned structure is provided on the upper surface of the cassette holder, the thickness of the cassette mounting device becomes thicker, and the VTR as a whole must be thicker.

On the other hand, the one described in JP-A-63-191347,
The door is divided into left and right and one side, for example, the left side door is set to the width corresponding to the small cassette, and door lock levers are provided on both the left and right doors, and the small cassette is the same at the left end and the front end of the standard cassette. It is for commercial use (cassette for M II format VTR) formed to be.

[Problems to be Solved by the Invention]

However, the small cassette (VHS-C (registered trademark)) generally used for consumer is narrower than the above-mentioned commercial small cassette, and therefore, when the consumer small cassette is inserted into a wide door. , Can not be inserted in the regular position.

Therefore, it is conceivable to form a small door corresponding to a small cassette for consumer use on a full-width large door, that is, to form a small door with a required distance from the left end.
The left-side lock member must be moved inwardly in response to this, and if the lock member is provided inside in this way, when the two large and small cassettes are attached and detached, it is attached to the bottom of the front face of the cassette into which the tape loading member is fitted. The pressing of the lock member by the cassette is released when passing through the formed opening,
Since the lock member returns to the original state, there is a problem that the tape is damaged by engaging and fitting into the opening portion, which cannot be adopted.

The present invention has been made in view of the above points, and normally can prevent the insertion of a hand or a foreign object by locking the doors of the standard and small cassettes in the closed state, and the small cassette can be properly operated. When the standard cassette is inserted from the proper insertion position and direction, only the small cassette door can be rotated, and when the standard cassette is inserted from the regular insertion position and direction, both the standard and small cassette doors can be rotated. It is an object of the present invention to provide a cassette loading device that can be inserted smoothly and reliably and that does not damage the tape when the two cassettes are attached and detached.

[Means for Solving the Problems]

In order to achieve the above object, a cassette loading apparatus according to the present invention is a front loading type in which a standard cassette and a small cassette that are selectively inserted from a cassette insertion opening on the front surface of a main body are mounted at predetermined mounting positions. In the cassette loading device, the width of the cassette insertion port is set to be substantially the same as the width of a standard cassette, and the cassette insertion port is provided with a rotatable first door for opening and closing the entire cassette insertion port. One door is provided with a notch having a width substantially equal to the lateral width of the small cassette at a position slightly deviated from the center and having a required distance from one end thereof, and a rotatable second door for opening and closing the notch. And, at both ends in the width direction of the cassette insertion opening, locking portions that engage with the first door to lock and prevent rotation thereof are inserted in front of the first door. The Remove the engagement between the first door and the locking portion by being pressed engaged with quasi cassette 1
A first door lock member having a tapered portion for releasing the lock with the door is provided, and the left and right ends of the second door at the bottom of the cassette insertion opening are engaged with and locked by the second door. A standard cassette receiving portion for releasing the lock of the second door by being pushed by the bottom surface of the locking portion for preventing movement and the standard cassette inserted in front of the second door, A second door lock member having a small cassette receiving portion that is released from an opening portion of a front bottom surface of the small cassette to be inserted and is pressed by a bottom surface of the small cassette to unlock the second door. is there.

[Action]

Therefore, in the cassette mounting device having the above configuration,
When the cassette is not inserted, both ends of the first door are locked by the first door lock members to prevent rotation, and lower ends of both ends of the second door are locked by the second door lock members. And prevent rotation. Further, when the standard cassette is inserted, the taper portions of both first door lock members are pressed by the standard cassette to be inserted, whereby the lock of the first door by the both first door lock members is released, and the both second door lock members are released. By pressing the standard cassette receiving portion of the lock member, the second
Unlock the door. Further, when the small cassette is inserted, the small cassettes to be inserted press the small cassette receiving portions of both the second door lock members to unlock only the second door by the both second door lock members.

〔Example〕

An embodiment for explaining the present invention will be described below with reference to the drawings. 1 to 3 are a plan view, a front view, and a front view with a door removed, showing the overall configuration of the cassette mounting apparatus according to this embodiment. The cassette housing body of the cassette mounting device includes a bracket 100, a housing door 200 provided on the front surface of the bracket 100, and a holder.
The drive force transmission mechanism 400 that moves the 300 is generally configured.

The bracket 100 is composed of left and right side plates 110, 120, a top plate 130, and a bottom plate 140, and the left and right side plates 110, 120 are provided with the driving force transmission mechanism 400 as shown in the drawing. As shown in detail in FIGS. 4 and 5, drive motor 401 → worm 402 → worm wheel
403 → Pulley 404 → Belt 405 → Pulley 406 → Right connect gear 407 → Right main gear 408, and the left connect gear 410 → Left main gear from the pulley 406 via the transmission shaft 409.
The driving force of the drive motor 401 is transmitted to the left and right main gears 408 and 411 in the order of 411.

Further, a holder 300 is arranged in the bracket 100,
A standard (VHS) cassette and a smaller (VHS-C) cassette smaller than the standard (VHS) cassette are selectively mounted on the holder 300 from the front side, and the mounted cassette is moved to a predetermined position. That is, as shown in detail in FIGS. 4 to 6, guide pins 301b (301a) and 302b (302a) are provided on both sides of the holder 300, respectively.
Almost L formed on both side plates 110, 120 of the bracket 100
The guide pins 111a, 301b are engaged with the guide grooves 111 (121), 112 (122) in the shape of a letter, and the guide pins 301a, 301b are engaged with the long holes 415, 416 of the operation arms 413, 414 of the left and right main gears 408, 411. .

Therefore, when the cassette is mounted, the holder 300 is located at the cassette insertion standby position shown in FIG. 4 (a), and if a standard cassette or a small cassette inserted from the front cassette insertion port 150 is mounted on this holder 300, it will be described later. The cassette detection switch detects that a cassette is mounted and drives the drive motor 401, and the left and right main gears 408 and 411 rotate clockwise in FIG. 4, so that the operation arms 413 and 414 also rotate clockwise. The guide pins 301a and 301b are guided along the guide grooves 111 and 121, so that the holder 300 moves from the cassette insertion standby position to the first predetermined mounting position shown in FIG. It moves to a second predetermined mounting position which is slightly higher than the first predetermined mounting position shown in FIG. 4 (c).

As a result, each cassette is mounted at the predetermined mounting position.

Further, at the cassette insertion port 150 part shown in FIG.
A housing door 200 is provided as shown in FIGS. 1 and 2 and FIGS. 5 to 7, and the housing door 200 is for a standard cassette as shown in FIGS. 2, 10 and 11. From the large first door 210 and the small second door 220 for a small cassette provided on a part of the back surface (inside) of the first door 210 to open and close the cutout 210A provided in the first door 210 It is roughly composed.

As shown in FIG. 16, guide portions 223 are formed at the left and right ends of the second door 220 for guiding the left and right sides of the small cassette protruding toward the surface facing the first door 210.

Further, as shown in FIGS. 1, 8, 9 and 10 and 11, the left and right ends of the first door 210, that is, the left and right side parts of the cassette insertion port 150 are the same. A first door lock mechanism 240 for locking the second door 220 is provided, and the second door 22 is provided on the bottom plate 140 of the bracket 100 corresponding to the lower left and right ends of the second door 220, that is, the bottom surface of the cassette insertion port 150.
A second door lock mechanism 1000 that locks 0 to the closed state is provided.

The first door lock mechanism 240 includes left and right first door lock members 241 that rotatably support a fulcrum 242 on the bottom surface of the cassette insertion opening 150 of the bracket 100, and is inwardly moved by a spring (not shown) (see FIG. 8). And in the inner direction by engaging the notch 151 (see FIG. 1) of the bracket 100 with the tip projection of the L-shaped piece 243 at the rear end. The maximum rotation range of is regulated,
The first door 210 is provided on the inner surface of each of the first door lock members 241.
An engaging recess 244 that engages with the end of the is formed, and tapered portions 245 and 246 are formed in the front and rear thereof, respectively.

Then, as the first door lock release mechanism 250 of the first door lock mechanism 240, the first door lock mechanism 250 is provided with the first door lock release mechanism 250.
As shown in FIGS. 3 to 8 and FIGS. 8 to 13, the shaft 2003 of the second door lock release mechanism 2000 described later.
The left and right first door lock release members 251 are rotatably attached to the first door lock release member 251.
Is urged in the clockwise direction in FIGS. 12 and 13 by the spring 255 shown in FIGS. 2 and 3, but the contact portion 252 protruding inwardly at the Y end in the figures is used. The bracket 100 is brought into contact with the inside of the notch 151 to hold it in the state shown in FIG. Further, as shown in FIG. 8 and FIG. 9, a taper portion 253 that engages with the cassette mounted at a predetermined position is formed at the contact portion 252, while X in FIG.
A taper portion 254 that slopes outward is formed at the end, and the front taper portion 254 has an L-shaped piece 243 of the door lock member 241.
Are engaged.

On the other hand, the second door lock mechanism 1000, as shown in FIG. 10 and FIG. 11, is composed of left and right second door lock members 1001 rotatably supporting the shaft 1002 on the bottom plate 140 of the bracket 100. While both are urged in the clockwise direction in FIG. 14 by springs (not shown), a part of the spring comes in contact with the back surface of the bottom plate 140, and normally, as shown in FIG. 14 (a) and FIG. 15 (a). It is held in the horizontal state shown, and can be rotated counterclockwise in this figure from this horizontal state.

Housing door 200 of the left and right second door lock member 1001
On the front side (X end side), as shown in FIG. 10, FIG. 11, FIG. 14 and FIG. A small cassette receiving part 1004 for receiving a portion other than the opening of the front bottom of the small cassette inside the area, and a standard cassette receiving the bottom of the standard cassette outside the opening of the front bottom outside the insertion area that is in the high position. On the back side (Y end side) of the housing door 200, a lock portion 1006 that opposes the back surface of the second door 220 and that prevents the second door 220 from rotating is formed. , A pin 1007 that engages with a second door lock release mechanism described later is formed.

As the second door lock release mechanism 2000 of the second door lock mechanism 1000, as shown in FIG. 10, the pin 2001 provided on the side surface of the left main gear 411 of the driving force transmission mechanism 400 and the left and right side plates. A shaft 2003 pivotally supported between 110 and 120, an operation lever 2004 engaged with the pin 2001 fixed to the shaft 2003, and a left side and a right side engaged with the pins 1007 provided on the left and right second door lock members 1001 respectively. And a second door lock release member 2002 including the operation piece 2005 of FIG. The second door lock release member 2002 is biased counterclockwise in FIGS. 14 and 15 by the spring 2006 provided on the shaft 2003, but a part of the operation piece 2005 is placed on the back surface of the bottom plate 140. Abut, usually 14th
It is held in the state shown in FIGS. 15 (a) and 15 (a), and can be rotated clockwise from this state.

Therefore, when the cassette is not inserted, the first door lock member 241
The first door lock release member 251 and the first door lock release member 251 are in the state shown by the solid lines in FIGS.
1 engages with the engaging recesses 244 at both ends of the first door 210 to restrict the rotation of the first door 210, while the second door lock member 1001 and the second door lock release member 2002 are shown in FIG. In the state shown in (a) and FIG. 15 (a), the second door lock release member 2002 is in the non-operating state, the lock portion 1006 of the second door lock member 1001 faces the back surface of the second door 220, The rotation of the second door 220 is restricted.

As a result, the first door 210 and the second door 220 are both locked and held in the closed state. Therefore, even if an attempt is made to insert a cassette of a different type or to push it open by hand, the housing door 200 (the above-mentioned first door) is opened. 1 door 210 and 2nd door
220) does not open, and it is possible to prevent erroneous insertion of a different type cassette and to prevent a child or the like from inserting his / her hand and breaking or injuring the VTR device.

When the standard cassette is inserted from the insertion port 150 from the state shown in FIGS. 1, 8 and 15 (a), both ends of the standard cassette are left and right first door locks as shown in FIG. The X-end taper portion 245 of the member 241 is pushed outward against the spring (not shown) to move the first door lock member 241.
Rotates about the fulcrum 242 in the counterclockwise direction in the figure to be in the state shown by the alternate long and two short dashes line.
The engagement recess 244 of the first door 210 and the end of the first door 210 are disengaged from each other.
While the door 210 is unlocked, the bottom surface of the standard cassette is the second door lock member 1001 as shown in FIG. 15 (b).
When the second cassette 1005 is pushed, the second door lock member 1001 rotates about the shaft 1002 in the counterclockwise direction in the drawing to move the 15th
Since the state is as shown in FIG. 7C, the lock portion 1006 of the second door lock member 1001 is disengaged from the second door 220 and
The door 220 is unlocked. As a result, the first door 2
Since the housing door 200 itself of 10 and the second door 220 can be rotated, it is pushed by the inserted standard cassette to open the lid.
The standard cassette is mounted in the holder 300 shown in FIG. 15 (d), and further passes through FIG. 15 (e) to reach the predetermined mounting position shown in FIG. 15 (f).

When the standard cassette is mounted at the predetermined mounting position shown in FIG. 15 (f), as shown in FIGS. 9 and 13, the rear end portion of the standard cassette has the first door lock release member 25.
Since it abuts against the Y end taper portion 253 of 1 to press, the first door lock release member 251 is counterclockwise about the shaft 2003 of the second door lock release mechanism 2000, which is a fulcrum, as shown in FIG. Therefore, the L-shaped piece 243 of the first door lock member 241 is supported by the tapered surface of the X-end taper portion 254 of the first door lock release member 251.
The first door lock member 24 is brought into the rotating state shown by the solid line in FIG.
Hold 1 That is, the first door 210 is maintained in the unlocked state.

On the other hand, as the left main gear 411, which should move the holder 300, rotates, the pin 2001 provided on the left main gear 411 abuts the operation lever 2004 as shown in FIGS. Since it is pushed up in the clockwise direction, the shaft 2003 also rotates in the clockwise direction accordingly, and the operation piece 2005 comes into contact with the pin 1007 of the second door lock member 1001 in the state of rotating clockwise in the drawing, and the second door The lock member 1001 is held in this rotating state. That is, the second door 220 is maintained in the unlocked state.

As a result, when the standard cassette is mounted at the predetermined mounting position, both door locks of the first door 210 and the second door 220 are released, and the housing door 200 (the first door 210 1 door 210 and 2nd
There is no obstacle in opening both doors 220).

Further, when the small cassette is inserted from the second door 220 while the housing doors 200 of the first door 210 and the second door 220 shown in FIGS. 1, 8 and 14 (a) are locked, Since the small cassette inserted as shown in FIG. 8 does not engage with the left and right first door lock members 241, the first door lock member 241 remains in the state shown by the solid line in FIG.
The first door 210 is held in the closed state. On the other hand, the first
The small cassette receiving portion 1004 of the second door lock member 1001 with the bottom surface of the small cassette inserted as shown in FIG.
When the second door lock member 1001 is pushed, the second door lock member 1001 rotates counterclockwise around the shaft 1002 to the state shown in FIG. 14 (c), so that the lock portion 1006 of the second door lock member 1001 moves to the first position. Two
The door 220 is disengaged and the second door 220 is unlocked. As a result, the first door cannot rotate and only the second door 220 can rotate. Therefore, the small cassette into which only the second door 220 is inserted is opened and the small cassette is moved to the 14th position.
It is mounted in the holder 300 shown in FIG.

At this time, as shown in FIG. 16 which is a view taken along the line ii of FIG. 14 (d), the left and right second door lock members 1001 are provided on the lower left and right sides of the small cassette inserted at the step 1003. While guiding the corners, the guides 223 of the second door 220 guide the left and right upper corners of the small cassette. Thus, the movement of the small cassette in the left-right direction is restricted so that the small cassette can be surely inserted in the predetermined position in the left-right direction.

Further, the small cassette mounted in the holder 300 is
After passing through the figure (e), it reaches the predetermined device position shown in the figure 14 (f). FIG. 10 shows a top view at the predetermined device position shown in FIG. 14 (f).

When the small cassette is mounted in the predetermined device position shown in FIGS. 10 and 14 (f), the small cassette does not contact the first door lock release member 251 as shown in FIG. Since the 1-door lock release member 251 remains in the non-rotational state shown in FIG. 12, the first door lock member 241 is in the original state shown by the chain double-dashed line in FIG.
Is held locked. On the other hand, the second door lock release member 2002 comes into contact with the pin 1007 of the second door lock member 1001 whose operation piece 2005 is rotated clockwise in FIG. The two-door lock member 1001 is held in this rotating state, and the second door 220 is unlocked.

As a result, when the small cassette is mounted in the predetermined mounting position, only the second door 220 is unlocked, and when ejecting the small cassette, there is a hindrance when only the second door 220 is opened by the opening mechanism described later. Never come.

Next, the housing door 200 including the first door 210 and the second door 220 will be described in detail.

As shown in FIGS. 1, 2, and 7, the first door 210 supports a shaft 211 provided on the upper portion thereof by the bracket 100 so as to be rotatable at the cassette insertion port 150 portion, as shown in FIGS. A double torsion spring 212 urges the lid in the closing direction (counterclockwise in FIG. 5).

Further, the door 220 shown in FIG. 2 is used as shown in FIG.
The left and right shafts 221 are rotatably supported on the rear surface side of the 10 and the one end 212a of the double torsion spring 212 is locked to an operating rod 222 provided so as to project from one end side of the first door. Similarly to 210, it is urged in the closing direction (counterclockwise direction in FIG. 5). Further, as shown in FIG. 7, the shaft 211 of the first door 210 is provided with a hooking lever 230 which is also urged counterclockwise in FIG. 5 by hooking the intermediate portion of the double torsion spring 212. An operation pin 231 is provided on the inner side surface of the hook lever 230, the tip of which abuts against the back surface of the first door 210.

Further, as the lid opening mechanism at the time of ejecting the housing door 200, as shown in FIG.
On the outer surface of the left main gear 411 of the housing, an opening cam portion 260 of the housing door is provided, and on one side thereof, the transmission shaft 4
The first lid opening lever for the first door 210, which is pivotally attached to 09 and has a cam portion 271 that engages with the lid opening cam portion 260 at the rear end.
The left side plate of the bracket 100 on the other side while providing the 270
The second door 22 that is rotatably supported by the fulcrum 282 on the 120, and has the cam portion 281 that engages with the opening cam portion 260 in the middle portion.
A second lid opening lever 280 for 0 is provided.

Then, as shown in FIGS. 5 and 7, an opening pin 272 facing the X end side (right side in FIG. 5) of the hooking lever 230 is provided at the tip of the first opening lever 270. While being provided, the tip portion 283 of the second lid opening lever 280 is attached to the second door.
The tip end of the operating rod 222 of 220 is opposed to the X end side (right side in FIG. 5).

Therefore, the housing door 200 performs the lid opening operation at the time of ejection as follows.

First, when the standard cassette or the small cassette is mounted in the predetermined mounting position, the opening cam portion 2 of the left main gear 411 is opened.
60 and the first and second lid opening levers 270 and 280 are in the state shown in FIG. In FIG. 19, in the left main gear 411, the solid line indicates the rotational position of the standard cassette at the predetermined mounting position, and the chain double-dashed line indicates the rotational position of the small cassette at the predetermined mounting position. As is apparent from FIG. 19, since both the lid opening levers 270 and 280 are disengaged from the cam portion of the lid opening cam portion 260 and are in a non-operating state, the first and second doors 210 and 210,
220 is closed.

From this state, when the standard cassette is ejected, the left main gear 411 is moved as the holder 300 moves in the eject direction.
When is rotated clockwise in Fig. 19, the standard cassette is
Before reaching the door, as shown in FIG. 18, the first and second opening levers 270, 280 abut the cam portion of the opening cam portion 260 and rotate counterclockwise about the fulcrums 409, 282, respectively. Therefore, as the first lid opening lever 270 rotates, the opening lid pin 272 at the tip of the first lid opening lever 270 moves from the position shown in FIG. 19 to the position shown in FIG. 18, whereby the hook lever 230 causes the double torsion spring 212. Since it is pushed up against, the biasing force in the opening direction acts on the first door 210 so as to follow it. At this time, since the first door 210 is unlocked by the door lock member 241 by the door lock release member 250, the first door 210 rotates (opens) as the hook lever 230 rotates. To do. The second door 2
Since 20 also opens with the first door 210, the second opening lever 280 does not act.

Further, when the small cassette is ejected, the left main gear 411 rotates clockwise in FIG. 19 as the holder 300 moves in the eject direction from the state shown in FIG. 19 before the small cassette reaches the first door. As in the case of the standard cassette, as shown in FIG. 17, the first and second lid opening levers 27
0, 280 abut the cam part of the lid opening cam part 260, and each fulcrum
Rotate counterclockwise around 409, 282. Therefore, with the rotation of the first lid opening lever 270, the lid opening pin 2 at the tip thereof is
72 moves from the position shown in FIG. 19 to the position shown in FIG. 17, whereby the hook lever 230 pushes up against the double torsion spring 212, but the first door 210 is locked by the door lock member 241. Since the rotation is blocked, only the above-mentioned hook lever 230 rotates and the first door 2
10 remains closed. Then, the second lid lever
Since the operating rod 222 is pushed up as shown in FIG. 17 as the 280 is rotated, only the second door 220 is rotated (opened).

In this way, the doors corresponding to the respective cassettes are opened, so that the respective cassettes are ejected from the opened doors. Even when the cassette is inserted, the first and second opening levers 270 and 280 are rotated by the opening cam portion 260 of the left main gear 411. At this time, the cassette pushes each door and inserts it. Since it is medium, there is no particular problem. In addition, in this embodiment, the main gear 411 is provided only on the left side, but it may be provided on both the left and right sides to divide the lid opening lever into the left and right.

Next, as the structure of the holder 300, as shown in FIG. 1, FIG. 3, and FIG. 20 to FIG. 22, it has a substantially square cross-section and its width dimension is substantially the same as that of the standard cassette. At the same time, a stepped portion 320 is formed at the required small cassette mounting position (position slightly leftward) on the inner bottom surface thereof. In addition, the Y-end side (see FIG. 1) 301 corresponding to the front opening of the cassette into which the tape loading member is fitted is cut out so as not to be in the way, and the reel on the deck side is moved to a predetermined mounting position. A hole 302 is formed at a position corresponding to the table.

Further, this cassette mounting device includes a standard cassette detection mechanism, a small cassette detection mechanism, a small cassette positioning mechanism, a standard and small cassette erroneous insertion prevention mechanism, which will be described later.
A small cassette pressing mechanism, a lid opener assembly rotating mechanism for the small cassette, a wire drawing mechanism, and a holder supporting mechanism are provided.

First, the standard cassette detection mechanism is shown in FIGS.
As shown in the figure, standard cassette detection levers 310 are provided on both left and right sides of the holder 300, and the standard cassette detection levers 310 provided on the left and right sides of the holder 300 are supported by the guide pins 302a and 302b. Each of them is rotatably supported by the holder 300, and the lower end 311 thereof is held by the holder 300 as shown in FIG.
The standard cassette detection switch 3 is provided on the outer surface of the holder 300 located on the other end 312 side while projecting to the left and right of the Y end of the inner bottom surface of the holder.
13 are provided. As shown in FIG. 6, the standard cassette detection lever 310 is urged by a spring 314 in a counterclockwise direction so that the upper surface of the other end 312 is brought into contact with the bent pieces 315 formed on the left and right side surfaces of the holder 300. Then, it is normally held in the state shown in FIG.

Therefore, when the standard cassette is correctly inserted into the holder 300, the lower ends 311 of the left and right standard cassette detection levers 310 are pushed on the front surface of the inserted standard cassette, so that the left and right standard cassette detection levers 310 are fulcrum points. By turning around 302a and 302b, the other end 312 side presses the standard cassette detection switch 313 respectively to turn it on, and both left and right standard cassette detection switches 313 are turned on by the microcomputer. It is possible to detect that the standard cassette has been correctly attached by detecting the occurrence of this, and based on this, drive control of the drive motor 401 described above is performed.

If the standard cassette is not correctly inserted in the holder 300 and only the inner lower end 311 of the left and right standard cassette detection levers 310 is pressed, only one standard cassette detection switch 313 is turned on by the microcomputer. Therefore, it is determined that the standard cassette is not properly mounted, and the drive motor 401 described above is not driven.

Next, as the small cassette detection mechanism 330, as shown in FIG. 1, FIG. 3, and FIG. 20, a slide plate 331 having a bending piece 332 at the Y end (back) on the step portion 320 of the holder 300. This slide plate 331 is fitted in a guide hole 333 formed in the bottom surface of the holder 300 and extending in the front-rear direction so as to be slidable in the front-rear direction, and is attached by a slide spring 334 in the X direction in FIG. Normally, the small cassette detection switch 335 is provided on the holder 300 at the back side (Y direction in FIG. 20) of the slide plate 331.

Therefore, when the small cassette is inserted into the holder 300,
Since the front surface of the small cassette abuts against the bent piece 332 of the slide plate 331 and pushes against the elastic force of the slide spring 334, the slide plate 331 slides in the Y direction in FIG. When the required amount of small cassette is inserted, Fig. 20 (a)
As described above, since the bent piece 332 presses the small cassette detection switch 335 to turn it on, the microcomputer determines that the small cassette has been mounted and drives and controls the drive motor 401 described above.

Next, as the positioning mechanism 340 for the small cassette,
As shown in FIG. 3, FIG. 3, and FIG. 20, the vertical portions formed on both sides of the step portion 320 of the holder 300 and on the left and right side surfaces of the small cassette at the X side end in the figure as shown in detail in FIG. A positioning hook 341 that engages with the groove is provided. The hook 341 is biased inward by a hook spring 342 shown in FIG. 20, and normally (during cassette insertion standby) shown in FIG. The tip of the hook 341 projects into the step (in the small cassette storage space). Meanwhile, a hook release pin 343 that engages with the hook 341 is provided on the bottom surface of the cassette insertion opening 150 of the bracket 100.

Therefore, when inserting a small cassette, the holder 300 is the first
At the position shown in the figure, the small cassette is inserted into the holder 300 in this state from the second door 220. At the left and right front ends of the small cassette, the hook 341 is hooked by the hook spring 3
It is inserted by pushing it against the elastic force of 42.

Then, when the required amount of the small cassette is inserted (at the same time as when the small cassette detection switch 335 is turned on by the small cassette detection mechanism 330 described above), the hook 341 is set to the small cassette as shown in FIG. 20 (a). It engages with the vertical grooves on both sides to position the small cassette in the front, rear, left and right.

When the small cassette is ejected, the holder 300 is moved in the X direction in FIG. 20 from the state shown in FIG. 20 (a) in which the small cassette is positioned by the hook 341, and the cassette mounting shown in FIG. The vehicle passes the standby position and reaches the position shown in FIG. 20 (b). At this time, the hook 341 is the hook release pin on the bottom of the cassette insertion slot 150 of the bracket 100.
The hook release pin 343 pushes against the elastic force of the hook spring 342 and spreads out, so that the positioning by the hook 341 is released.

Therefore, the elastic force accumulated in the slide spring 334 of the slide plate 331 described above during positioning causes the second
A small cassette is ejected in the X direction in FIG. 0 (b). That is, the hole portion of the small cassette protrudes from the above-described opened second door 220 by at least the amount that can be grasped, so that the cassette can be taken out reliably and easily and the operability is improved.

Next, as a mechanism for preventing erroneous insertion of both standard and small cassettes, when the cassette is mounted on the holder 300, the small cassette is mounted on the step portion 320 of the holder 300 with respect to the standard cassette. In addition to the difference in the mounting height position between and, the depth of the charging prevention groove differs between them, so it is necessary to separately provide each cassette, but in that case, the number of parts increases and the cost is increased. There were problems such as high cost and poor workability, so I did the following.

That is, as shown in FIGS. 1 and 20 to 22,
An erroneous cassette insertion prevention mechanism 350 is provided on the bottom surface of the holder 300.

The erroneous insertion prevention mechanism 350 is provided with an erroneous insertion prevention lever 351 pivotally supported on the outer bottom surface of the holder 300 as shown in FIGS. 21 and 22, and the erroneous insertion prevention lever 351 will be described later. An engagement portion 352 that engages with a guide plate 380 that guides one side surface of the small cassette, and an incorrect insertion prevention piece corresponding to an incorrect insertion prevention groove formed on the bottom of both the standard and small cassettes at the tip.
Equipped with 353.

Therefore, before mounting the cassette, the guide plate 380 hangs down as shown in FIG. 21, and the engaging portion 352 of the erroneous insertion prevention lever 351 is pressed by the pressing portion 382 at the lower end of the guide plate 380. The incorrect insertion prevention lever 351 is slightly rotated clockwise in the figure. As a result, the height position of the wrong insertion prevention piece 358 of the wrong insertion prevention lever 351 becomes the same as the height position of the wrong insertion prevention groove formed on the bottom surface of the small cassette.

Here, when the small cassette is properly inserted into the holder 300, as shown in FIG.
The erroneous insertion prevention piece 353 is engaged with the erroneous insertion prevention groove of the inserted small cassette and does not interfere with the insertion operation of the small cassette, but if the small cassette is inserted upside down by mistake, The insertion preventing piece 353 collides with the small cassette to prevent the insertion.

Next, when the standard cassette is inserted, the guide plate 380 is automatically rotated by the mechanism described later to be positioned on the ceiling part of the holder 300 as shown in FIG. Since the pressing action due to is released, the erroneous insertion prevention lever 351 slightly rotates counterclockwise in FIG. 21 to the state shown in FIG. This prevents incorrect insertion prevention lever 351.
The height position of the wrong insertion prevention piece 353 is the same as the height position of the wrong insertion prevention groove of the standard cassette. Then, when the standard cassette inserted in the same manner as above is inserted in a proper state, the misinsertion preventing piece 353 engages with the misinsertion preventing groove of the standard cassette and does not disturb the insertion operation, but it is accidentally turned upside down. When inserted by mistake, the erroneous insertion prevention piece 353 hits and blocks the insertion.

Next, as the pressing mechanism 360 for the small cassette, as shown in FIGS. 3 and 23 to 28, the top plate 303 of the holder 300 is
This small cassette holding mechanism 360 is
As shown in FIG. 3, FIG. 23, and FIG. 24, the pressing member 363 and the operating member 364 arranged side by side are roughly configured.

The pressing member 363 includes a pressing base portion 363a rotatably attached to a first shaft 365 provided on the attachment portion 361 of the top plate 303,
It is composed of a plate spring portion 363b pivotally attached to a second shaft 366 provided on the pressing base portion 363a, and a pressing portion 363c for a small cassette is provided at the tip end portion of the plate spring portion 363b, and the tip end thereof is set to the 23rd position. As shown in the figure, the arcuate portion 363f is formed.

In addition, the presser base 363a is connected to the first spring 3 of the first shaft 365.
23, the upper surface of the pressing base 363a is brought into contact with the pin 362 projecting from the mounting portion 361, and the leaf spring portion 363b is moved to the second spring of the second shaft 366. 366
Although it is urged clockwise in FIG. 23 by a, the contact portion of the leaf spring portion 363b contacts the stopper piece 363d formed on the side surface of the pressing base portion 363a.
363e abuts and normally maintains the inclined state shown in FIG. 23, and the leaf spring portion 363b can rotate counterclockwise in FIG. 23 but cannot rotate clockwise.

The operation member 364 includes an operation base 364a pivotally attached to a third shaft 367 provided on the presser base 363a, and the operation base 3
64a and an operating piece 364b pivotally attached to a fourth shaft 368, and the operating base 364a is connected to the third spring 367 of the third shaft 367.
The hook portion 364e is attached as a rotation restricting member that is urged in the counterclockwise direction in FIG. 23 by a and is provided on the operation base portion 364a to make the holding member 363 in a rotatable state and a non-rotatable state. Department
It is hooked to pin 362 of 361. In addition, the operation piece 364b is set to the fourth
The fourth spring 368a of the shaft 368 urges clockwise in FIG. 23, but the stopper piece 36 formed on the side surface of the operation base 364a.
The contact portion 364d of the operating piece 364b comes into contact with 4c and normally maintains the inclined state shown in FIG.
364b can rotate counterclockwise in FIG. 23 but cannot rotate clockwise.

Further, the end of the second shaft 366 on the side of the operating member 364 is projected, and the projecting portion 366b is positioned above the operating base 364a.
The pressing member 363 is also rotated in the counterclockwise direction in FIG. 23 in association with 364, and the operation base is provided corresponding to the protruding portion 366b.
A U-shaped groove 369 is formed in 364a to prevent the operation member 364 from being unable to rotate halfway when the cassette pressing mechanism 360 is pushed up to the maximum and the protrusion 366b interferes with it. .

Therefore, the small cassette holding mechanism 36
0 is in the state shown in FIG. 28, and when the standard cassette is inserted as shown in FIG. 26 in this state, the first door 210 described above is opened by the standard cassette as shown in FIG. 26 (a), The first door 210 pushes the operation piece 364b of the operation member 364 upward. At this time, the operation piece 364b and the operation base portion 364a are integrally rotated because the contact portion 364d is engaged with the stopper piece 364c, and the operation piece 364b and the operation base portion 364a rotate clockwise about the third shaft 367 in FIG. 26. As shown in FIG. 26 (a), the hook portion 364e comes off the pin 362.

Then, when the standard cassette is further inserted as shown in FIG. 26 (b), the first door 210 causes the pressing member 363 and the operating member 36 to move.
4 and push it up to put the first door 21 under the cassette holding mechanism 360.
It becomes the form that 0 dives. At this time, the protruding portion 363b is fitted in the U groove 369 so as not to interfere with the upward rotation of the operation member 364.

Then, when the holder 300 having the standard cassette mounted thereon moves in the Y direction, the cassette pressing mechanism 360 is disengaged from the first door 210. At this time, the top plate 303 corresponds to the operation member 364 as shown in FIG. The leaf spring 304 is provided, and the 25th
As shown in the figure, elastic force is applied by the leaf spring 304, and the operating member 364 acts as a cassette retainer on one end side of the standard cassette as shown in FIG. 26 (c). Note that at the time of ejecting, the members are operated in the reverse order of the above, in the order of FIGS. 26 (c), (b), and (a).

Also, when the cassette holding mechanism 360 is in the state shown in FIG. 28 and the small cassette is inserted as shown in FIG. 27 when the cassette holding mechanism 360 is in the state shown in FIG. 28, only the second door 220 described above by the small cassette is moved to the 27th position. As shown in FIG. 7A, the lid is opened, and the second door 220 presses the leaf spring portion 363b of the pressing member 363 in the clockwise direction in the figure (clockwise in FIG. 23). At this time, the operation piece 364b of the operation member 364 is at a position separated from the second door 220 and does not contact the second door 220. Therefore, as shown in FIGS. 23 and 27, the hook portion 364e of the operation member 364 remains engaged with the pin 362, and thus the second door 2
When the leaf spring portion 363b is pressed by 20, the pressing member 363
Tries to rotate to the ceiling side about the first shaft 365, but this rotation is blocked, the same state is maintained, and the leaf spring portion 36
3b is elastically bent so that the second door 220 sunk under the leaf spring portion 363b.

Then, as shown in FIG. 27 (b), when the holder 300 having the small cassette mounted thereon moves, the cassette pressing mechanism 360 is disengaged from the second door 220. At this time, the cassette pressing mechanism 360 is pressed by the elastic force of the leaf spring portion 363b. The small cassette is pressed downward by the portion 363c.

Then, at the time of ejecting this small cassette, the members operate in a manner substantially opposite to the above, that is, in the order of (b) and (a) of FIG. 27, but the second door 220 opened here is inserted. When it goes under the leaf spring portion 363b as shown in FIG. 27 (a) in the same manner as the time, the small cassette has a shorter width in the minor axis direction than the standard cassette. Although the small cassette is ejected, the amount of elastic force of the leaf spring portion 363b increases due to the second door 220 submerging under the leaf spring portion 363b, which causes a load of the ejection operation.

Therefore, the distal end of the leaf spring portion 363b is formed as an arcuate portion 363f as shown in FIG. 23, and the second door 220 is guided by the arcuate portion 363f as shown in FIG. On the contrary, is located above the leaf spring portion 363b. As a result, the load at the time of discharging the small cassette is reduced, the discharging operation is smooth and the discharge power is reduced.

Here, as shown in FIG. 40 (a), the small cassette is a cassette case that houses a supply reel and a take-up reel on which a magnetic tape is wound, and a magnetic tape that protects the magnetic tape stretched on the front surface of the cassette case. It is composed of a movable lid. When this lid is opened, Fig. 40 (b)
As shown in, the upper end surface of the lid is higher than the upper end surface of the cassette case, and a step is formed. At the time of eject,
The stepped portion is hooked by the surface on the right side of the pressing portion 363c of the leaf spring portion 363b shown in FIG. 23 to close the lid. The lid in the open state (the lid automatically closes in the case of a small cassette biased in the closing direction by a spring) by the ejection operation of the small cassette hits the holding portion 363c of the leaf spring portion 363b. And close the lid.

Next, the lid opener assembly rotating mechanism 37 for the small cassette
As indicated by 0, as shown in FIGS. 29 to 31, the holder 300
It is provided on the back surface of the top plate 303 of the above, and as its configuration, as shown in FIG. 29 to FIG. 32, the first shaft 376a provided on the attachment portion 371 of the top plate 303 is attached to the first shaft 376a. Arm 373
And the operation pin engaged with the long hole 372a of the cut and raised piece 372 of the top plate 303.
The second arm 374 pivotally attached to 377 and both arms 373 and 37
The third arm 375 and the third arm 375 are attached to the second shaft 376b.

The third arm 375 is a spring 3 provided on the second shaft 376b.
Although 76c urges clockwise in FIG. 31 (a), a stopper (not shown) prevents the first arm 373 from rotating clockwise relative to the state shown in FIG. 31 (a). There is.

A rotatable fan-shaped plate 378 is provided on the other end side of the operation pin 377, and a rack rod 379 that engages with the fan-shaped plate 378 and is movable in the left-right direction is provided, and is formed at the tip thereof. Gear 381 located near the rack 379a engaged with the rack 379a, and the engaging portion of the erroneous insertion prevention lever 351 of the erroneous insertion prevention mechanism 350 shown in FIGS. 21 to 22 described above at the lower end portion.
A guide plate 380, which has a pressing portion 382 for pressing the 352 and has a lid opener assembly 390 to be described later, which guides the side surface of the small cassette when the small cassette is inserted, is pivotally attached to the third shaft 384. The guide plate 380 is urged by a spring 383 provided on the third shaft 384 in the counterclockwise direction in FIG.

Therefore, when the first door 210 rotates during insertion of the standard cassette, the third arm 375 is pressed clockwise by the first door 210 as shown in FIG. The operation pin 377 of 374 moves in the Y direction while being guided by the elongated hole 372a of the cut and raised piece 372, and the movement of the operation pin 377 in the Y direction causes the fan-shaped plate 378 to move from FIG. 30 (a) to FIG. Rotate as shown in.

The rotation of the fan-shaped plate 378 causes the rack bar 379 to slide to the right in FIG. 30 (b), so that the guide plate 380 meshing with the rack 379a is shown in FIG. It will be in a sideways state substantially parallel to the top plate 303.

As a result, the guide plate 380 including the lid opener assembly 390 is located between the inserted standard cassette and the top plate 303, so that the guide plate 380 can be avoided at a position where it does not interfere with the inserting operation of the standard cassette. Further, in the hanging state of the guide plate 380, as described above, the pressing portion 382 at the lower end thereof pushes the engaging portion 352 of the misinsertion preventing lever 351 as shown in FIG. Due to the variable movement operation, as shown in FIG. 22, the pressing of the engaging portion 352 of the erroneous insertion prevention lever 351 is released.

When inserting a small cassette, the second door 220 is the third arm 375.
Since it does not contact with the guide plate 380
Is in a hanging state as it is, and one side surface side of the small cassette to be inserted is guided by the guide plate 380.

Further, as shown in FIG. 31, a leaf spring 305 is provided on the top plate 303 of the holder 300 so as to correspond to the second shaft 376b, and when the second arm 374 is pushed upward when the standard cassette is inserted. ,
This leaf spring 305 comes into contact with the second shaft 376b portion and is shown in FIG. 31 (b).
As shown in Fig. 7, it acts as a cassette retainer on the other end side of the standard cassette (the cassette retainer of the opposite standard cassette is the operation member 3 on the outside of the cassette retainer mechanism 360 of the small cassette).
64 is working).

Next, the lid opener assembly 390 of the small cassette is provided on the guide plate 380, and as shown in FIGS. 3, 32 and 33, the arm gear 391 provided on one side of the guide plate 380. And the lid opener 395.

As shown in FIGS. 32 and 33, the arm gear 391 is rotatably supported by a shaft 391a provided on a guide plate 380, and a pin 382 provided on the guide plate 380 is fitted into the arcuate hole 391b. Therefore, the rotation range is restricted. Also, the locking piece
It has 392 and a gear portion 393.

The lid opener 395 is rotatably supported by a shaft 395a, and a spring 394 is provided between a pin 396 provided at a position displaced from the shaft 395a and a pin 384 provided on the guide plate 380.
Is locked and is normally biased clockwise in FIG. 33 (a). Further, it has a gear portion 397 that meshes with the gear portion 393 of the arm gear 391, and an opener portion 398 that has a claw portion 399 that projects into the small cassette storage space and that opens the lid (front lid) of the small cassette. There is.

On the other hand, the bottom plate 140 of the bracket 100 is provided with a rotatable arm gear hook 160 pivotally attached to the transmission shaft 409, for example. The arm gear hook 160 is urged counterclockwise in FIG. 33 by a spring 161 as shown in FIGS. 3, 32 and 33, and one end thereof is notched in the bottom plate 140 of the bracket 100 (not shown). It is held in the state shown in FIG. 32 by contacting the end portion. In addition, the locking piece 3 of the arm gear 391
A hook portion 162 that engages with the tip of 92 is provided, and a taper portion 163 is formed on the outer surface side of the hook portion 162.

Therefore, when the cassette is not attached, the guide plate 380 is in a hanging state as shown in FIG. 32, and the lid opener assembly 390, the locking piece 392 of the arm gear 391 and the opener portion 398 of the lid opener 395 are both directed downward. It is in a state.

When a small cassette is inserted in this state as shown in FIG. 33 (a), the claw portion 39 of the opener portion 398 of the lid opener 395 is inserted.
9 engages inside the lid of the small cassette.
Since the holder 300 itself moves in the Y direction in FIG. 33 as described above, the tip of the locking piece 392 of the arm gear 391 is caught by the hook portion 162 of the arm gear hook 160, and the holder 300 is moved.
The locking piece 392 is pulled in the X direction with the movement of. Therefore, the arm gear 391 moves around the shaft 391a at the 33rd position.
Since it rotates clockwise in the figure, the lid opener 395 rotates counterclockwise.

Then, as shown in FIG. 33 (b), the pin 3 of the guide plate 380 is
Pin 396 on the line connecting 84 and the shaft 395a of the lid opener 395.
When exceeds, the biasing force of the spring 394 acts counterclockwise in FIG. 33, and the lid opener 395 clicks counterclockwise to turn to the state shown in FIG. 33 (c).

Along with this, the lid of the small cassette locked to the claw portion 399 of the opener portion 398 changes from the closed state shown in FIG. 33 (a) to the opened state shown in FIG. 33 (c).

When the small cassette is ejected, the holder 300 moves in the X direction with the lid opener assembly 390 shown in FIG. 33 (c). By moving the holder 300 in the X direction, the third
As shown in FIG. 3D, the tip of the locking piece 392 of the arm gear 391 abuts on the tapered portion 163 of the arm gear hook 160, and further X
Along with the movement in the direction, counterclockwise pressure in the figure (c) is applied to the arm gear 391 to rotate counterclockwise.

Then, as shown in FIG. 33 (b), the pin 3 of the guide plate 380 is
Pin 396 on the line connecting 84 and the shaft 395a of the lid opener 395.
When is exceeded, the biasing force of the spring 394 acts in the clockwise direction in FIG. 33, contrary to the above, so that the lid opener 395 clicks clockwise to pivot and returns to the original state shown in FIG. 32. .

Further, as the holder 300 moves in the x direction, the tip of the locking piece 392 of the arm gear 391 again contacts the taper portion 163 of the arm gear hook 160, but the arm gear hook 160 rotates clockwise and gets over this. 33, it is located on the front side (X side) of the original hook portion 162 shown in FIG. 33 (a).

Next, the wire pull-out mechanism 500 will be described. As shown in FIG. 1, the holder 300 is provided with a standard cassette detection switch 313 and a small cassette detection switch 335, and the wires 501 from these switches 313 and 335 are provided. To the microcomputer on the VTR deck body side, but since the holder 300 moves, the wire 5 is moved along with the movement of the holder 300.
There is a possibility that 01 may be caught by another member on the VTR deck, the wire 501 may be broken, or the holder 300 cannot be moved.

Therefore, for example, as shown in FIG. 1 and FIG.
A wire lead-out member 502 is provided on the X direction side of the right guide pin 302a. The lead-out member 502 is rotatably connected to the guide pin 302a by a connecting member 503 as shown in FIG. 34, and by fitting the lead-out member 502 into the guide groove 112 like the guide pin 302a. As shown in FIG. 4, the guide pin 302a moves in conjunction with the movement of the guide pin 302a.

Then, the wire 501 from each of the switches 313 and 335 may be directly led out to the side plate 110 of the fixed bracket 100 through the through hole 504 of the lead-out member 502. However, as shown in FIGS. When the lead-out member 502 reaches the vertical portion of 112, the guide pin 302a in the figure rotates in the clockwise direction, so that the lead-out member 502 is connected to the wire 501, for example, as shown in FIG. It is desirable that the guide pin 302a be appropriately wound around the guide pin 302a in a direction in which the guide pin 302a is loosened when being rotated, and then the guide pin 302a is led to the outer surface of the side plate 110 of the bracket through the lead-out member 502.

Accordingly, the wire 501 can be led out of the movable holder 300 with an extremely simple configuration without damaging the wire 501 or hindering the movement of the holder 300.

Next, the support mechanism 600 of the holder 300 will be described.
As shown in Fig. 36 and Fig. 36, a small chassis with positioning pins 602 for small cassettes and transmission gears 603 on the deck side.
601 is provided, and the small chassis 601 is lowered when the standard cassette shown in FIG. 35 is mounted and raised when the small cassette shown in FIG. 36 is mounted.

Here, due to the difference in the height position in the holder 300 between the standard cassette and the small cassette and the mounting height at the predetermined mounting position, when the standard cassette is mounted as shown in FIG. 300 guide pins 301a (301b), 302a (30
2b) reaches the lowermost position of the guide grooves 111 (121), 112 (122), and the guide pins 301a (301b), 302a (302b) are located at the lowermost ends of the guide grooves 111 (121), 112 (122). Supported, the holder 300 is accurately positioned in the position shown in FIG.

Therefore, when the small cassette shown in FIG. 36 is mounted, as shown in FIG. 4 (c), the guide pin 301a (301
b) and 302a (302b) are located slightly above the lowermost end positions of the guide grooves 111 (121) and 112 (122), so that they are guided by the guide grooves 111 (121) and 112 (122) as described above. Pin 301
Since a (301b) and 302a (302b) cannot be supported, the regulation of the height position of the holder 300 is very weak. Therefore, the holder 300 may slightly drop from the predetermined position for some reason. In this case, the holder 300 collides with a member such as an idler on the deck side to hinder the operation, or the holder 300 is lowered, so that the pressing force of the small cassette pressing mechanism 360 shown in FIG. 27 increases. The pressing mechanism 360 may be damaged due to an excessive load. Therefore, the above small chassis 60
1 is formed with a support portion 604 that abuts and supports the holder 300.

Therefore, since the small chassis 601 is in a lowered state when the standard cassette shown in FIG. 35 is mounted, the support portion 604 of the small chassis 601 does not contact the holder 300, but when the small cassette shown in FIG. 36 is mounted, Since the small chassis 601 is raised, the supporting portion 604 of the small chassis 601 comes into contact with the bottom surface of the moved holder 300 to support the holder 300. This can surely and easily prevent the holder 300 from dropping unnecessarily.

Next, a sequence for positioning the holder 300 according to the present invention will be described. As shown in FIGS. 1 and 20, when the small cassette is mounted, the holder 30 is ejected.
0 is the eject direction (X direction in FIG. 20) from the normal eject position (the cassette standby position shown in FIG. 1)
To the position (oper stroke position) shown in Fig. 20 (b), push the hook 341 open with the hook release pin 343 to release the positioning operation, and then return to the normal eject position. ing. On the other hand, this is not necessary when the standard cassette is mounted, so the holder 300 is stopped at the regular eject position when ejecting.

In this way, the movement control of the holder 300 differs depending on the mounted cassette. That is, finally the holder 300
The movement direction when stopping is the opposite movement direction in the case of the small cassette and the case of the standard cassette, and it is very difficult to stop them at the same position due to the accuracy of the sensor and the mechanical back crash.

Therefore, as shown in Fig. 37, a. When moving the holder 300 in the eject direction from the in state of the small cassette (mounted at the predetermined position), it goes beyond the regular eject position to the overstroke position. Move (release positioning by hook 341 when moving to this overstroke position).

b. Pull the holder 300 from the overstroke position once beyond the eject position in the cassette mounting direction by a predetermined amount.

c. The holder 300 is again moved in the eject direction from the position where it is pulled in a lot, and stopped at the regular eject position.

I am trying.

As a result, the standard cassette and the small cassette can have the same moving direction when stopped to the eject position, and both can be stopped at the same position, so that the mounting operation of the next cassette can be made reliable and stable.

FIG. 38 is a schematic hardware configuration diagram for performing the operation based on the sequence shown in FIG. 37 described above, and FIGS. 39 (a) and 39 (b) are the same when the cassette corresponding to the sequence shown in FIG. 37 is inserted. And an operation flowchart by the CPU for controlling the holder 300 at the time of ejecting.

In FIG. 38, a drive motor 401 for driving the holder 300 provided in the cassette housing is a motor driver 701.
The CPU 702 drives and controls the holder 300 by the control signals from the left and right standard cassette detection switches 313 and 313 and the small cassette detection switch 335 in the detection mechanism of the standard cassette and the small cassette. A housing sensor that is provided on the main gear 408 (411) to which the driving force of the drive motor 401 is transmitted and that detects that the small cassette and the standard cassette have moved to a predetermined mounting position based on the rotation angle of the main gear. S ₁ and S ₂ (Note that sensor S ₁ and sensor S _{2 in} FIG.
The drive motor 410 is controlled as shown in FIGS. 39 (a) and 39 (b) based on the detection signal (corresponding to the above) and the ejection operation signal at the time of ejection.

When inserting the cassette shown in FIG. 39 (a), first,
The cassette to be inserted is identified, and the drive motor 401 is controlled to rotate forward in the processing step of FWD. Next, in the standby position determining step, it is determined whether the cassette can be mounted as it is at the loading standby position corresponding to the (inserted) cassette identified by the moving mechanism on the main body side such as the small chassis 601 and the tape loading member. When it is not in the standby position, the process step of moving the corresponding moving mechanism to start the movement is performed so as to bring the moving mechanism on the main body side to the loading standby position corresponding to the identified cassette. At this time, the timer t is set to an initial value T _o (horizontal movement period of the holder 300 shown in FIG. 37), and again at the standby position determination step, the loading standby position corresponding to the cassette in which the main body side moving mechanism is inserted. If the time is not reached, the timer counts down and waits _{until the} time elapses, and if the moving mechanism on the main body side is not at the loading standby position even after the time T _o has elapsed, the drive motor 401 is further controlled to drive the holder 300.
And the moving mechanism on the main body side collide, the drive motor 401 is stopped in the BRAKE processing step (note that
The moving mechanism on the main body continues to move).

When the movement mechanism on the main body side reaches the position corresponding to the inserted cassette due to the countdown of the timer, it moves to the stop processing step to stop the movement mechanism of the main body, and then in the vertical movement period shown in FIG. 37. Transition and drive motor 40
The FWD processing step for controlling the forward rotation of 1 is executed (when the drive motor 401 is stopped and controlled in the BRAKE processing step, the forward rotation control is restarted, otherwise it is continued).

When it is determined to be YES in the first standby position determination step, and when the detection signal of the housing sensor S ₁ becomes “0” after the above-described FWD processing step, the inserted cassette is a standard cassette. After the step of determining whether the cassette is a small cassette based on the detection signals of the detection switches 313 and 335 described above, when it is determined that the cassette is a small cassette, the drive motor 401 is stopped and stopped in the same manner as the BRAKE processing step described above, and When the standard cassette is determined, the drive motor 401 is stopped and controlled after the detection signal of the housing sensor S ₂ becomes “0”, and the process ends. As a result, the holder 300 moves from the cassette insertion standby position (eject position) as shown in FIG. 37 to the first predetermined mounting position shown in FIG. 4 (b) when the standard cassette is mounted, and when the small cassette is mounted as shown in FIG. It moves to a second predetermined mounting position slightly higher than the first predetermined mounting position shown in (c) and stops.

Next, at the cassette eject time shown in FIG. 39 (b) (corresponding to the same reference numerals as those shown in the path in FIG. 37), the eject operation signal shown in FIG. The REV processing step is executed to reversely control the drive motor 401 based on the above, and the holder 300 is moved in the eject direction from the in state of the small cassette. Then, when the holder 300 reaches the eject position through each determination step of the detection signals of the housing sensors S ₁ and S ₂ , it is determined whether the cassette is a standard cassette or a small cassette based on the detection signals of the detection switches 313 and 335. Is
In the BRAKE processing step, the drive motor 401 is stop-controlled to stop the holder 300 at the regular eject position, and the eject process is ended.

On the other hand, in the case of a small cassette, a BRAKE processing step of stopping the drive motor 401 is executed after a processing step of a predetermined waiting time DELAY1 in order to move the holder 300 by a predetermined amount in the eject direction from the regular eject position.

By doing so, the small cassette is ejected by a predetermined amount from the cassette insertion opening, so that the work of taking out the small cassette can be facilitated and the operability can be improved.

Next, the FWD processing step is executed to control the forward rotation of the drive motor 401 so as to pull the holder 300 from the overstroke position once beyond the eject position in the cassette mounting direction. Then, the detection signal of the housing sensor S ₂ becomes “1”, and the predetermined waiting time DELA according to the pull-in amount.
After the processing step of Y2 has elapsed, the drive motor 401 is stopped and controlled again in the BRAKE processing step. After that, in order to move the holder 300 in the eject direction from the excessively retracted position in the cassette loading direction, the REV processing step of controlling the reverse rotation of the drive motor 401 is executed, and the detection signal of the housing sensor S ₂ is “0”. When that is the case, that is, at the regular eject position, the drive motor 401 is stopped and controlled to end the eject process.

〔The invention's effect〕

As described above, according to the present invention, when the cassette is not inserted, the first and second doors for the standard and small cassettes are locked in the closed state by the first and second door lock members, respectively, and the standard cassette is inserted. When both the first and second doors are unlocked, the second cassette is used when a small cassette is inserted.
Since only the door lock is released, it is possible to prevent hands and foreign objects from being inserted from the door, and the insertion of each cassette can be done smoothly and securely.
The tape is not damaged when the cassettes are attached or detached.

[Brief description of drawings]

1 to 3 are a plan view and a front view showing an overall configuration of a cassette mounting apparatus according to an embodiment for explaining a cassette mounting apparatus according to the present invention, and a front view with a door open, 4A to 4C are explanatory views of movement of the mounting position when the cassette is mounted, FIGS. 5 and 6 are explanatory views of the driving force transmission mechanism and the lid opening mechanism when the housing door is ejected, and FIG.
Figure is an illustration of the door as seen from the back side, Figures 8 to 16 are illustrations of the door lock and release mechanism, and Figures 17 to
Fig. 19 is an explanatory view of the lid opening operation when the housing door is ejected, Figs. 20 (a) and 20 (b) are explanatory views of a small cassette detection mechanism and a positioning mechanism, and Figs. 21 and 22 show small and standard cassettes. 23 to 28 are illustrations of the small cassette holding mechanism, and FIGS. 29 to 31 are illustrations of the lid opener assembly rotating mechanism of the small cassette and FIG. 32. FIG. 33 is an explanatory view of a lid opener assembly for a small cassette, FIGS. 34 (a) and 34 (b) are schematic and front views showing the relationship between a wire lead-out member and a guide pin, and FIGS. 35 and 36. Is an explanatory view of a holder support mechanism, FIG. 37 is a sequence diagram illustrating a movement path of the holder 300 at the time of inserting and ejecting a cassette, and FIG. 38 is a schematic hardware configuration diagram for performing an operation based on the above sequence, Fig. 39 (a),
Similarly, (b) is an operation flowchart by the CPU 702 for controlling the holder 300 at the time of inserting and ejecting the cassette corresponding to the above sequence, and FIGS. 40 (a) and 40 (b) are a perspective view and a side view showing a small cassette. . 150: cassette insertion port, 200: housing door, 210: first door, 210A: notch, 220: second door, 240: first door lock mechanism, 241: door lock member, 243: L-shaped piece, 244: Engagement recesses, 245 and 246: taper parts, 250: first door lock release mechanism, 251: first door lock release member, 252: contact part, 25
3,254: Taper part, 1000: 2nd door lock mechanism, 1001: 2nd
Door lock member, 1003: step, 1004: small cassette receiving part, 1005: standard cassette receiving part, 1006: locking part, 2000:
Second door lock mechanism, 2002: Second door lock release member.

Claims (1)

[Claims] 1. A front loading type cassette mounting device for mounting a standard cassette and a small cassette selectively inserted from a cassette insertion port on a front surface of a main body at predetermined predetermined mounting positions, respectively, in a lateral width of the cassette insertion port. Has a width substantially equal to the width of the standard cassette, a rotatable first door for opening and closing the entire cassette insertion opening is provided at the cassette insertion opening, and the first door has a required distance from one end thereof. And a notch having a width substantially the same as the lateral width of the small cassette, and a rotatable second opening and closing the notch.
Doors are provided, and locking portions for engaging and locking the first door to prevent its rotation are provided at both widthwise ends of the cassette insertion port, and a standard to be inserted in front of the first door. A first door lock member having a taper portion that disengages the engagement portion and the first door to release the lock of the first door by being engaged with the cassette and pressed, and inserts the cassette. Locking portions at the left and right ends of the second door at the bottom of the mouth, locking portions that engage and lock the second door and prevent its rotation, and a front surface of a standard cassette that is inserted in front of the second door. The standard cassette receiving portion which is released from the opening portion of the bottom portion and is pressed by the bottom surface thereof to unlock the second door and the front surface of the front portion of the small cassette to be inserted and which is pushed by the bottom surface thereof to be pushed by the bottom surface of the second door Small size to unlock only Cassette loading apparatus characterized in that a second door lock members having a set receiving unit.