JPH03283128A - Cassette loading device - Google Patents

Abstract

PURPOSE:To make the insertion of each cassette smooth and to prevent a tape from damaging at the time of loading and unloading by turning only a door for a small-sized cassette when the small-sized cassette is inserted from a regular insertion position and direction and both doors for a standard cassette and the small-sized cassette when the standard cassette is inserted. CONSTITUTION:When no cassette is inserted, the 1st and 2nd doors 210 and 220 for the standard and small-sized cassettes are locked in closed state by 1st and 2nd door lock members. Then, when the standard cassette is inserted, the 1st and 2nd doors 210 and 220 are both locked and when the small-sized cassette is inserted, only the 2nd door 220 is unlocked to prevent a hand and a foreign body from being inserted through the door; and each cassette is inserted smoothly and securely and the tape is prevented from damaging when the cassette is loaded or unloaded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a front-loading type cassette mounting device for mounting a cassette containing a magnetic tape such as a VTR.

[Conventional technology]

There is a front-loading type cassette mounting device for mounting a cassette containing a built-in magnetic tape such as a VTR, which is capable of selectively mounting two large and small cassettes, a standard cassette and a small cassette/soto.

In such a cassette loading device, the width dimension of the holder into which the cassette is loaded is approximately equal to the width dimension of a standard cassette, so the small cassette can be inserted at any position within the holder, and the small cassette can be inserted at a predetermined regular position. There is a possibility that it will not be done.

For this reason, for example, Japanese Patent Laid-Open No. 83-146283 and Japanese Patent Laid-Open No. 61-191847 have proposed a system in which a small cassette can also be inserted into a predetermined regular position.

The device described in Japanese Patent Application Laid-Open No. 148263 has a cassette insertion detection member and a locking member interlocked with the cassette insertion detection member disposed at two locations at both ends of the width direction dimension and the width dimension of the small cassette in the cassette insertion slot. , a cassette insertion prohibiting lid member is provided at approximately the center position of the two detection members, and when a small cassette is inserted in the normal position, the two detection members and locking member are activated to prevent the cassette insertion prohibition lid member. When the lid member is inserted into an irregular position, only one detection member is activated, and the other detection member and locking member make it impossible to open the lid member.

However, the configuration of the detection member, lock member, lid member, etc. is complicated, and the number of parts is large, resulting in high cost.
Since the above-mentioned structure is provided on the upper surface of the cassette holder, the thickness of the cassette/soto mounting device becomes thicker, and the entire VTR must also be thicker.

On the other hand, in the device described in Japanese Patent Application Laid-open No. 63-191347, the door is divided into left and right halves, one side, for example, the left door, is set to a width corresponding to a small cassette, and a door lock lever is installed on each of the left and right doors. This is a commercial-use (MI [format VTR cassette]) in which the small cassette is formed so that the left end and front end of the standard cassette are the same.

[Problem to be solved by the invention]

However, the small cassettes commonly used for consumer use (
The VH5-C (registered trademark) is narrower than the commercial small cassette, and therefore, when inserting the consumer small cassette into a wide door, it cannot be inserted in the correct position.

Therefore, it is conceivable to form a small door corresponding to the small consumer cassette on the full-width large door, that is, to form the small door with a required spacing from the left end, but in this case,
The left side locking member must be moved inward to accommodate this, and if the locking member is provided on the inside in this way, when installing and removing two large and small cassettes, the tape loading member will fit into the front bottom of the cassette. When passing through the formed opening, the locking member is released from being suppressed by the cassette, and
Since the locking member returns to its original state, there is a problem that the locking member may fit into the opening and damage the tape, so it could not be adopted.

The present invention has been made in view of the above points, and it is possible to lock the doors of standard and small cassettes in a closed state to prevent hands or foreign objects from being inserted, and also to prevent small cassettes from being inserted into regular cassettes. When a standard cassette is inserted from the correct insertion position and direction, only the small cassette door can be rotated, and when a standard cassette is inserted from the correct 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 allows smooth and reliable insertion and does not damage the tape when the two cassettes are attached and detached.

[Means to solve the problem]

In order to achieve the above object, the cassette loading device according to the present invention is a front loading type in which a standard cassette and a small cassette are selectively inserted from a cassette insertion slot on the front of the main body, and each is loaded in a predetermined loading position. In the cassette loading device, the width of the cassette insertion opening is set to be approximately the same width as that of a standard cassette, and the cassette insertion opening is provided with a rotatable first door that opens and closes the entire cassette insertion opening. The first door is provided with a cutout portion having a required distance from one end of the door at a position slightly offset from the center thereof and having a width substantially the same as the width of the small cassette, and a second door that is rotatable to open and close the cutout portion. and a locking portion that engages with and locks the first door to prevent its rotation at both ends in the width direction of the cassette insertion slot, and a locking portion that engages with a standard cassette inserted in front of the first door. When the locking portion and the first door are pressed together, the locking portion disengages from the first door.
A first door lock member having a tapered portion for unlocking the door is provided, and the first door lock member is provided at both left and right end positions of the second door at the bottom of the cassette insertion slot, and engages with and locks the second door, and rotates the second door. a standard cassette receiving part and an insertion part that release the standard cassette from the front bottom opening of the standard cassette inserted in front of the second door and are pressed by the bottom surface of the standard cassette to release the lock of the second door. The second door lock member is provided with a small cassette receiving part that comes off the opening at the bottom of the front face of the small cassette and is pressed by the bottom surface of the small cassette to unlock the second door. .

[For production]

Therefore, in the cassette loading device with the above configuration,
When the cassette is not inserted, both ends of the first door are locked by the first door lock member to prevent rotation, and lower parts of both ends of the second door are locked by the second door lock member. to prevent rotation. In addition, when inserting a standard cassette, by pressing the tapered part of the first door locking member for both boxes with the inserted standard cassette, the first door is unlocked by the first door locking member for both boxes, and the second door for both boxes is released. By pressing the standard cassette receiving part of the locking member, the second
unlock the door.

Furthermore, when inserting a small cassette, the small cassette to be inserted presses the small cassette receiving portion of the two-box two-door locking member, thereby releasing only the lock of the second door by the two-box two-door locking member.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 sequentially show a plan view, a front view, and a front view with the door removed showing the overall configuration of the cassette loading device according to the present embodiment. The cassette housing body of the cassette mounting device is generally composed of a bracket 100, a housing door 200 provided on the front side of the bracket 100, and a driving force transmission mechanism 400 for moving the holder 300.

The bracket 100 is composed of left and right side plates 110, 120, a top plate 130, and a bottom plate 140.
10 and 120, the driving force transmission mechanism 40 as shown in the figure.
As shown in detail in FIGS. 4 and 5, this driving force transmission mechanism 400 is provided with a drive motor 401→
Worm 402 → Worm wheel 403 → Pulley 40
4 → belt 405 → pulley 406 → right connect gear 40
The driving force of the drive motor 401 is transmitted to the left and right main gears 40g and 411 in the following order: 7→right main gear 408, and the pulley 406 via the transmission shaft 409, left connect gear 410→left main gear 411. It has become.

Further, a holder 300 is disposed within the bracket 100, and a standard (VHS) cassette and a smaller (VHS-C) cassette are selectively mounted on the holder 300 from the front side. The cassette is moved to a predetermined position. That is, the fourth
As shown in detail in FIG. 6, guide pins 301b (301a) are provided on both sides of the holder 300, respectively.
302b (302a) is provided, and the bracket 100
oval-shaped guide grooves 111 (121) formed on both side plates 110 and 120, respectively.

112 (+22), and furthermore, one of these guide bins 301a, 301b is connected to the left and right main gears 4.
08°411 operating arm 413.414 long hole 415
．． 41B.

Therefore, when the cassette is installed, the holder 300 is in the cassette insertion standby position shown in FIG.
When a standard cassette or a small cassette inserted from the front cassette insertion slot 150 is installed in the cassette 0, the cassette detection switch described later detects that the cassette is installed and drives the drive motor 401, which drives the left and right main gears. 40
8. When 411 rotates clockwise in FIG. 4, the operating arms 413 and 414 also rotate clockwise, so the guide pin 301a.

301b is guided along guide grooves 111.121,
As a result, the holder 300 moves from the cassette insertion standby position to the first predetermined mounting position shown in FIG. 4(b) when a standard cassette is mounted, and slightly from the first predetermined mounting position shown in FIG. 4(e) when a small cassette is mounted. Move to a higher second predetermined mounting position.

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

Furthermore, a housing door 200 (as shown in FIGS. 1 and 2, and FIGS. 5 to 7) is provided at the cassette insertion slot 150 shown in FIG.
0, as shown in FIGS. 2, 10, and 11, a large 'M1 door 210 for standard cassettes, and a first door 210 for opening and closing a notch 21OA provided in this first door 210. It generally consists of a small second door 220 for a small cassette provided on a part of the back (inside) of the cassette.

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

Further, as shown in FIGS. 1, 8 and 9, and 10 and 11, the first door 210 is provided at both left and right ends of the first door 210, that is, on both left and right sides of the cassette insertion slot 150. A first door lock mechanism 240 is provided for locking the second door 210 in the closed state, and the second door 220 is attached to the bottom plate 140 of the bracket 100 at the bottom of both left and right ends of the second door 220, that is, the bottom surface of the cassette insertion slot 150. A second door lock mechanism 1000 is provided for locking the door in the respective states.

The first door lock mechanism 240 is comprised of left and right first door lock members 241 that rotatably support a fulcrum 242 on the bottom surface of the cassette insertion slot 150 of the bracket 100, and is supported by a spring (not shown) inwardly (see FIG. 8). and clockwise in FIG. 9), the L piece 243 at the rear end is engaged with the notch 151 of the bracket 100 (see FIG. 1) to achieve the maximum rotation in the inward direction. Each first door lock member 241 has an engagement recess m 244 formed on its inner surface to engage with an end of the first door 210, and has a tapered portion 245 at the front and rear thereof.
246 is formed.

The first door lock release mechanism 250 of the first door lock mechanism 240 includes the bracket 100.
As shown in FIGS. 1 to 3 and 8 to 13, a second door lock release mechanism 2000, which will be described later,
The left and right first door lock release members 251 are rotatably attached to the shaft 2003 of the shaft 2003, and the first door lock release members 251 are supported by springs 255 shown in FIGS. 2 and 3 as shown in FIG. and the state shown in FIG. 12, in which the abutting portion 252 protruding inwardly at the Y end in FIG. I try to keep it that way.

Further, as shown in FIGS. 8 and 9, the contact portion 252
A tapered part 253 that engages with a cassette mounted at a predetermined position is formed at the site, while a tapered part 254 that slopes outward is formed at the X end in the figure, and this front tapered part 254
The L piece 243 of the door lock member 241 is engaged with the door lock member 241.

On the other hand, as shown in FIGS. 10 and 11, the second door lock mechanism 1000 includes a bottom plate 140 of the bracket 100.
It consists of left and right second door lock members 1001 rotatably supported on a shaft 1002, both of which are biased clockwise in FIG. When it comes into contact with the back side, it is usually shown in Fig. 14 (a).
) and in the horizontal state shown in FIG. 15(a), and can be rotated counterclockwise in the figure from this horizontal state.

10 and 11 on the front side (X end side) of the housing door 200 of the left and right second door lock members 1001,
As shown in FIGS. 14 and 15, a step 1003 is formed corresponding to the insertion interval of the small cassette, and the bottom surface of the small cassette at a position away from the opening at the front bottom of the small cassette is received inside the low insertion area. The small cassette river bank has a standard cassette receiving part 1005 which receives the bottom surface of the standard cassette at a position away from the front bottom opening of the standard cassette on the outside of the insertion area where the part 1004 is set at a high position. On the side (Y end side), there is a lock part 1006 that faces the back surface of the second door 220 and prevents rotation of the second door 220, and a bin 1007 that engages with a second door lock release mechanism to be described later. is formed.

The second door lock release mechanism 2000 of the second door lock mechanism 1000 includes a left main gear 411 of the driving force transmission mechanism 400, as shown in FIG.
A bin 2001 provided on the side surface and left and right side plates 110, 12
A shaft 2003 rotatably supported between 0 and 0, an operating lever 2004 that engages with the bin 2001 fixed to the shaft 2003, and the left and right box two-door lock member 10.
The second door lock release member 20 consists of left and right operation pieces 2005 that respectively engage with the bins 1007 provided in 01.
It consists of 02. Although the second door lock release member 2002 is urged counterclockwise in FIGS.
14 (a) and 15.
It is held in the state shown in Figure (a) and can be rotated clockwise in the figure from this state.

Therefore, when the cassette is not inserted, the first door lock member 24
1 and the first door lock release member 251 are in the state shown by solid lines in FIGS. , while regulating the rotation of this first door 210,
The second door lock release member 1001 and the second door lock release member 2002 are in the state shown in FIGS. 14(a) and 15(a), and the second door lock release member 2002
is in a non-operating state, the lock portion 1006 of the second door lock member 1001 faces the back surface of the second door 220, and the second
Rotation of the door 220 is restricted.

As a result, both the first door 210 and the second door 220 are locked and held in a closed state, so that even if you try to insert a different type of cassette or push it open by hand, the housing door 200 (the above-mentioned The first door 210 and the second door 220) do not open, which prevents incorrect insertion of a different type of cassette, and also prevents children from inserting their hands and damaging the VTR device or causing injury. I can do it.

When the standard cassette is inserted from the insertion slot 150 from the state shown in FIGS. 1, 8, and 15(a), the 8th
As shown in the figure, both ends of the standard cassette push the X-end tapered portion 245 of the left and right box single door lock member 241 outward against a spring (not shown), and the first door lock member 241 serves as a fulcrum. 242 in the counterclockwise direction in the figure and reaches the state shown by the two-dot chain line, the engagement recess 244 of the first door lock member 241 and the end of the first door 210 are disengaged and the first While the door 210 is unlocked, as shown in FIG. 15(b), the bottom surface of the standard cassette pushes the second door lock member 1 (standard cassette part 1005 of 101), and the second door lock member 1001 is axis 1
Rotating counterclockwise in the figure with 002 as the center,
), the second door lock member 10
The lock portion 1006 of No. 01 is removed from the second door 220, and the second door 220 is unlocked. As a result, the housing door 200 of the first door 210 and the second door 220
Since the cassette itself is rotatable, it is pushed open by the inserted standard cassette, and the standard cassette is installed in the holder 300 shown in FIG. 15(d), and then passes through the holder 300 shown in FIG. 15(e). Then, the predetermined mounting position shown in FIG. 15 (1') is reached.

When the standard cassette is installed in the predetermined installation position shown in FIG. 15(r), the rear end of the standard cassette is attached to the first door lock release member 251, as shown in FIGS. 9 and 13. In order to abut and press the Y terminal-8 portion 253, the first door lock release member 251 is attached to the second door lock release mechanism 200, which is a fulcrum, as shown in FIG.
The L piece 24 of the first door lock member 241 rotates counterclockwise around the shaft 2003 of the first door lock member 241.
3 is supported by the tapered surface of the X-end tapered portion 254 of the first door lock release member 251, and holds the first door lock member 241 in the rotating state shown by the solid line in FIG.

That is, the first door 210 is maintained in an unlocked state.

On the other hand, due to the rotation of the left main gear 411 that should move the holder 300, the bin 2001 provided on the left main gear 411 comes into contact with the operating lever 2004, as shown in FIGS. Since it is pushed up in a clockwise direction, the shaft 2003 also rotates clockwise,
The operation piece 2005 comes into contact with the pin 1007 of the second door lock member 1001 which is rotated clockwise in the figure, and
The door rotor member 1001 is held in this rotational state. That is, the second door 220 is maintained in an unlocked state.

As a result, when the standard cassette is installed in a predetermined installation position, the door lockers of the first door 210 and the second door 220 are released, and when the standard cassette is ejected, the housing door 200 (the first There is no problem when opening both doors (door 210 and second door 220).

In addition, the first
When a small cassette is inserted from the second door 220 with the housing door 200 of the door 210 and the second door 220 locked, the inserted small cassette engages with the left and right first door lock members 241 as shown in FIG. Since the first door lock member 241 remains in the state shown by the solid line in FIG. 8, the first door 210 is maintained in the closed state. On the other hand, as shown in FIG. 14(b), the bottom surface of the inserted small cassette presses the small cassette receiving part 1004 of the left and right second door lock members 1001, and the second door lock member 1001 rotates around the shaft 1002 as shown in the figure. Since it rotates clockwise and reaches the state shown in FIG. 14(C), the lock portion 1006 of the second door lock member 1001 locks the
20 and the second door 220 is unlocked. As a result, the first door cannot rotate and only the second door 220 can rotate, so only the second door '220 is pushed open by the inserted small cassette, and the small cassette is opened as shown in FIG. It is mounted in the holder 300 shown in (d).

At this time, the 16th
As shown in the figure, the left and right second door lock members 1001 guide the right and left lower corners of the small cassette to be inserted using the steps 1003, while the guide portions 223 of the second door 220 guide the left and right upper corners of the small cassette. Guide the corner. This restricts the movement of the small cassette in the left and right direction, and allows the small cassette to be reliably inserted into a predetermined position in the left and right direction.

Furthermore, the small cassette mounted in the holder 300 passes through FIG. 14(e) and reaches the predetermined mounting position shown in FIG. 14(r). Figure 1θ is this figure 14 (“)
Fig. 3 shows a top view at the predetermined mounting position shown in Figs.

When the small cassette is installed in the predetermined mounting position shown in FIGS. 10 and 14(f), the small cassette does not come into contact with the first door lock release member 251 as shown in FIG. The first door rotor release member 251 is the 12th
Since it remains in the non-rotating state shown in the figure, the first door stopper member 241 is in its original state shown by the dotted chain line in Fig. 9.
The first door 210 is held in a locked state. On the other hand, the second door lock release member 2002 has its operation piece 2
Pin 1 of the second door lock member 1001 with 005 rotated clockwise in Figure C, similar to when a standard cassette is installed.
007, the second door lock member 1001 is held in this rotational state, and the second door 220 is brought into an unlocked state.

As a result, only the second door 220 is unlocked when the small cassette is installed in the predetermined mounting position, and there is no problem in opening only the second door 220 by the opening mechanism described later when the small cassette is ejected. It will never come.

Next, the housing door 200 consisting of 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 rotatably supports a shaft 211 provided at the upper part of the cassette insertion slot 150 with the bracket 100. , double torsion spring 212
is biased in the lid closing direction (counterclockwise in FIG. 5).

In addition, as shown in FIG. 7, the second door 220 has left and right shafts 221 rotatably supported on the back side of the first door 210, and an operating rod 222 protruding from one end thereof. One end 212a of the double torsion spring 212
By locking, it is biased in the closing direction (counterclockwise in FIG. 5) similarly to the first door 210 described above. Furthermore, the middle portion of the double torsion spring 212 is hung on the shaft 211 of the first door 210 as shown in FIG.
A lever 230 is provided on the hook which is similarly biased in the counterclockwise direction in FIG.

As shown in FIG. 5, the housing door opening cam portion 260 is attached to the outer surface of the left main gear 411 of the driving force transmission mechanism 400 as a lid opening mechanism when the housing door 2 (1(l) is ejected. A first door 2 is provided with a cam portion 271 on one side of which is pivotally attached to a transmission shaft 409 and has a cam portion 271 at a rear end portion that engages with the lid opening cam portion 260.
A first lid opening lever 270 for 10 is provided, while the other side is rotatably supported on the left side plate 120 of the bracket 100 at a fulcrum 282, and the lid opening cam portion 260 is provided at the intermediate portion.
A second lid opening lever 280 for the second door 220 is provided which has a cam portion 281 that engages with the second door 220.

As shown in FIGS. 5 and 7, at the tip of the first lid opening lever 270, the hook is provided with an opening pin 272 that faces the X end side (right side in FIG. 5) of the lever 230. On the other hand, the tip 283 of the second lid opening lever 280 is opposed to the X end (right side in FIG. 5) of the tip of the operating rod 222 of the second door 220.

Therefore, the housing door 200 opens in the following manner at the time of ejection.

First, when a standard cassette or a small cassette is installed at a predetermined mounting position, the opening cam portion 260 of the left main gear 411 and the first and second opening levers 270 and 280 are in the state shown in FIG. 19. In Fig. 19, left main gear 4
11, the solid line indicates the rotational position of the standard cassette at the predetermined mounting position, and the two-dot chain line indicates the rotational position of the small cassette at the predetermined mounting position. As is clear from FIG. 19, both the lid opening levers 270 and 280 have come off the cam part of the lid opening cam part 260 and are in the non-operating state, so the first and second doors 210 and 220 are in the closed lid state. It is in.

When the standard cassette is ejected from this state, when the left main gear 411 rotates clockwise in FIG. 19 as the holder 300 moves in the ejecting direction, the standard cassette moves to the position shown in FIG. 18 before reaching the first door. As shown,
The first and second lid opening levers 270°280 are connected to the opening cam part 2.
60 and rotate counterclockwise around fulcrums 409 and 282, respectively.

Therefore, as the first lid opening lever 270 rotates, the opening pin 272 at its tip moves from the position shown in FIG. 19 to the position shown in FIG.
is pushed up against the double torsion spring 212, so that a biasing force is applied to the first door 210 in the opening direction. At this time, the first door 210 is released from the door lock member 2 by the door lock release member 250.
41 is released, the first door 210 rotates (opens) as the lever 230 rotates. Note that since the second door 220 also opens together with the first door 210, the second door opening lever 280 does not operate.

Furthermore, when ejecting a small cassette, if the left main gear 411 rotates clockwise in Fig. m19 as the holder 300 moves in the ejection direction from the state shown in Fig. 19 above,
Before the small cassette reaches the first door, the first and second lid opening levers 270 and 280 come into contact with the cam portions of the lid opening cam portion 260, as in the case of the standard cassette, as shown in FIG. Rotates counterclockwise around a fulcrum 409°282. Therefore, as the first lid opening lever 270 rotates, the opening pin 272 at its tip moves from the position shown in FIG. 19 to the position shown in FIG. However, since the first door 210 is locked by the door lock member 241 and prevented from rotating, only the lever 230 rotates and the first door 210 is pushed up.
10 remains in the closed state. As the second door opening lever 280 rotates, the operating rod 222 is pushed up as shown in FIG. 17, so only the second door 220 rotates (opens).

In this way, the door corresponding to each cassette is opened, and each cassette is ejected from each opened door. Note that when inserting a cassette, the first and second lid opening levers 270 and 280 are rotated by the lid opening cam portion 260 of the left main gear 411, but at this time, the cassette pushes aside each door and is inserted. There is no particular problem since it is in operation. In this embodiment, the main gear 411 may be provided only on the left side, or may be provided on both the left and right sides to separate the lid opening lever into left and right sides.

Next, as shown in FIGS. 1 and 3 and FIGS. 20 to 22, the configuration of the holder 300 is that the cross section has a roughly cross-sectional shape, and its width is the same as that of a standard cassette. At the same time, a stepped portion 320 is formed at the required small cassette mounting position (a position slightly to the left) on the inner bottom surface. In addition, the Y end side (see Figure 1) 301 corresponding to the front opening of the cassette into which the tape loading member etc. fits is cut out to prevent it from getting in the way. Hole 302 at the position corresponding to the stand
is formed.

Furthermore, this cassette mounting device includes a standard cassette detection mechanism, a small cassette detection mechanism, a small cassette positioning mechanism, a mechanism for preventing incorrect insertion of standard and small cassettes, which will be described later.
A small cassette holding mechanism, a small cassette glue rad opener assembly rotating mechanism, a wire pulling mechanism, and a holder supporting mechanism are provided.

First, the standard cassette detection mechanism is as shown in Fig. 1 and Fig. 6.
As shown in the figure, standard cassette detection levers 310 are provided on both the left and right sides of the holder 300, and each standard cassette detection lever 310 provided on the left and right is connected to the guide pin 30.
2a and 302b, their fulcrums are rotatably supported by the side surfaces of the holder 300, and their lower ends 311 are connected to the first
As shown in the figure, a standard cassette detection switch 313 is provided on the outer surface of the holder 300, which protrudes to the left and right at the Y end of the inner bottom surface of the holder 300 and is located on the other end 312 side.

As shown in FIG. 6, the standard cassette detection lever 310 is biased counterclockwise in the drawing by a spring 314, and the other end 310 is attached to a bent piece 315 formed on the left and right sides of the holder 300.
The upper surface of the 12 side is brought into contact with the upper surface, and the state shown in FIG. 6 is normally maintained.

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 with the front surface of the inserted standard cassette, so that the left and right standard cassette detection levers 310 serve as fulcrums. 3
02a, 302b, and each other end 312
The standard cassette detection switch 313 on each side is pressed to turn on, and the microcomputer detects that both the left and right standard cassette detection switches 313 are turned on and determines that the standard cassette has been correctly installed. Based on this, the drive motor 401 described above is driven and controlled.

If the standard cassette is not inserted correctly into the holder 300 and only the lower end 311 of one side 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 correctly installed, and the drive motor 401 described above is not driven.

Next, as the small cassette detection mechanism 330, as shown in FIGS. 1, 3, and 20, a slide plate 331 has a bent piece 332 at the Y end (inner part) of the stepped portion 320 of the holder 300. This slide plate 331 has a guide hole 3 formed on the bottom surface of the holder 300 and extending in the front-rear direction.
33 so that it can slide in the front and back direction, and is biased in the X direction in FIG. 20 by a slide spring 334 so that it is normally in the position shown in FIG. A small cassette detection switch 335 is provided on the holder 300 on the side (Y direction in FIG. 20).

Therefore, when a small cassette is inserted into the holder 300, the front surface of the small cassette comes into contact with the bent piece 332 of the slide plate 331 and pushes against the elastic force of the slide spring 334, so that the slide plate 331 Slide in the Y direction in FIG. When the required amount of small cassettes are inserted, the bending piece 332 presses the small cassette detection switch 335 and turns it on, as shown in FIG. 20(a), so the microcomputer determines that a small cassette has been inserted. Then, the drive motor 401 described above is driven and controlled.

Next, as a positioning mechanism 340 for a small cassette, as shown in FIGS. 1, 3, and 20, a holder 300
As shown in detail in FIG. 20, positioning hooks 341 are provided on both sides of the stepped portion 320 to engage with vertical grooves formed on both left and right sides of the small case/socket at the end on the X side in the figure. This hook 341 is urged inward by a hook spring 342 shown in FIG. 20, and normally (when waiting for cassette insertion) the tip of the hook 341 shown in FIG.
(inside the small cassette storage space). On the other hand, a hook release bin 3 that engages with the hook 341 is provided on the bottom surface of the cassette insertion port 150 of the bracket 100.
43 are provided.

Therefore, when inserting a small cassette, the holder 300 is in the position shown in FIG. 1, and the small cassette is inserted into the holder 300 in this state from the second door 220. 341 is inserted by pushing it apart against the elastic force of the hook spring 342.

Then, when the required amount of small cassettes are inserted (approximately at the same time as the small cassette detection switch 335 is turned on by the small cassette detection mechanism 330), the hook 341 becomes small as shown in FIG. 20(a). It engages with the vertical grooves on both sides of the cassette and positions the small cassette in the front, back, left and right directions.

Furthermore, when ejecting a small cassette, the holder 300 moves in the X direction in FIG. 20 from the state shown in FIG. It passes through the standby position for attaching the kit and reaches the position shown in FIG. 20(b).

At this time, the hook 341 comes into contact with the hook release bin 343 on the bottom of the cassette insertion slot 150 of the bracket 100,
Since the hook release bin 343 is pushed out against the elastic force of the hook spring 342, the positioning by the hook 341 is released.

Therefore, due to the elastic force accumulated in the slide spring 334 of the slide plate 331 during positioning, the small cassette/soto is ejected in the X direction in FIG. 20(b). That is, the rear part of the small case/throat protrudes from the opened second door 220 by at least an amount that can be grasped, thereby making it possible to reliably and easily take out the case/throat and improving operability.

Next, as a mechanism to prevent misinsertion of standard and small dual-power sets, when a cassette is mounted on the holder 300, the small cassette is mounted on the stepped portion 320 of the holder 300 compared to the standard cassette. In addition to the difference in the installation height position with the cassette, the depth of the insertion prevention groove is also different between these, so it is necessary to provide it separately for each cassette, but in that case, the number of parts increases, There were problems such as high cost and poor workability, so we decided to do the following.

That is, as shown in FIG. 1 and FIGS. 20 to 22, a cassette incorrect insertion prevention mechanism 3 is provided on the bottom surface of the holder 300.
50 is set.

The erroneous insertion prevention mechanism 350 is provided with an erroneous insertion prevention lever 851 that is rotatably supported on the outer bottom surface of the holder 300 as shown in FIGS. 21 and 22. It has an engaging part 352 that engages with a guide plate 380 that guides one side of the small cassette, and an erroneous insertion prevention piece 353 that corresponds to the erroneous insertion prevention groove formed on the bottom of the standard and small dual force sets at the tip. There is.

Therefore, before the cassette is installed, the guide plate 380 hangs down as shown in FIG.
The engaging portion 352 of the erroneous insertion prevention lever 351 is pushed by the pressing portion 382 at the lower end of the erroneous insertion prevention lever 351, and the erroneous insertion prevention lever 351 is rotated slightly clockwise in the figure.

As a result, the erroneous insertion prevention piece 3 of the erroneous insertion prevention lever 351
The height position of 53 is the same as the height position of the erroneous insertion prevention groove formed on the bottom surface of the small cassette.

When the small cassette is inserted into the holder 300 in a normal state, the erroneous insertion prevention piece 353 of the erroneous insertion prevention lever 351 engages with the erroneous insertion prevention groove of the inserted small cassette, as shown in FIG. In addition, it does not interfere with the insertion operation of the small cassette, but if the small cassette is accidentally inserted upside down, the incorrect insertion prevention piece 353 hits against the small cassette and prevents insertion.

Next, when the standard cassette is inserted, the guide plate 380 automatically rotates as shown in FIG. 22 by a mechanism described later and is positioned on the ceiling of the holder 300. Since the pressing action is released, the erroneous insertion prevention lever 351 rotates slightly counterclockwise in FIG. 21 and enters the state shown in FIG. 22. Thereby, the height position of the erroneous insertion prevention piece 353 of the erroneous insertion prevention lever 351 becomes the same as the height position of the erroneous insertion prevention groove of the standard cassette. When the standard cassette inserted in the same manner as above is inserted in the normal state, the erroneous insertion prevention piece 353 engages with the erroneous insertion prevention groove of the standard cassette and does not interfere with the insertion operation. When it is inserted, the erroneous insertion prevention piece 353 collides and prevents the insertion.

Next, as a holding mechanism 360 for the small cassette, as shown in FIG. 3 and FIGS. 23 to 28, a holder 300 is used.
This small cassette holding mechanism 360 is roughly composed of a holding member 363 and an operating member 364 that are arranged side by side as shown in FIGS. 3, 23, and 24. .

The pressing member 363 is attached to the mounting portion 361 of the top plate 303.
A presser foot base 363a is rotatably attached to a first shaft 385 provided in
The plate spring part 363b is pivoted to the plate spring part 363b, and the presser part 3 for small cassettes is attached to the tip of the plate spring part 363b.
63C is provided, and its tip is formed into an arcuate portion 363'' as shown in FIG.

Note that the presser foot base 363a is urged counterclockwise in FIG. , the leaf spring portion 363b is biased clockwise in FIG. 23 by the second spring 366a of the second shaft 366, but the contact portion of the leaf spring portion 383b is pressed against the stopper piece 363d formed on the side surface of the presser foot base 363a. 36
3e abuts to maintain the normally inclined state shown in FIG. 23, and the plate spring portion 363b can rotate counterclockwise in FIG. 23 but cannot rotate clockwise.

Further, the operation member 384 includes an operation base 364a pivoted to a third shaft 367 provided on the presser foot base 363a,
The operating piece 364b is pivoted to a fourth shaft 368 provided on the operating base 364a, and the operating base 364a is biased counterclockwise in FIG. 23 by a third spring 367a of the third shaft 367. , the hook portion 364e is connected to the mounting portion 36 as a rotation regulating member that is provided on the operation base 364a and makes the presser member 363 rotatable and non-rotatable.
It is hooked on pin 362 of No. 1. In addition, the operation piece 364b
The fourth spring 368a of the fourth shaft 368 urges the clockwise direction in FIG.
64d abuts and normally maintains the tilted state shown in FIG. 23 as described above, and the operation piece 364b can rotate counterclockwise in FIG. 23 but cannot rotate clockwise.

Further, the end portion of the second shaft 38B on the operation member 364 side is protruded, and this protrusion portion 366b is positioned above the operation base 364a, so that the presser member 363 is moved to the second position in conjunction with the operation member 364.
3 so that it rotates clockwise in the figure, and the protrusion 3
A U-groove 369 is formed in the operation base 364a corresponding to the U groove 369 so that when the cassette holding mechanism 360 is pushed up to the maximum, the protrusion 366b becomes an obstacle and the operation member 364 cannot rotate halfway. Preventing it from disappearing.

Therefore, when waiting for the cassette to be loaded, the small cassette holding mechanism 3
60 is in the state shown in FIG. 28, and when a standard cassette is inserted in this state as shown in FIG. 26, the first door 210 mentioned above is opened by the standard cassette as shown in FIG. 2B (a), This first door 210 presses the operating piece 364b of the operating member 364 upward.

At this time, the operating piece 364b and the operating base 364a rotate clockwise in FIG. As shown in FIG. 26(a), the hook portion 364e
comes off from pin 362.

Then, when the standard cassette is further inserted as shown in FIG. Become.

At this time, the protrusion 368b fits into the U groove 369 so as not to obstruct the upward rotation of the operating member 364.

After that, when the holder 300 with the standard cassette mounted moves in the Y direction, the cassette holding mechanism 360 presses the first door 2.
At this time, as shown in FIG. 23, a leaf spring 304 is provided on the top plate 303 corresponding to the operating member 364, and as shown in FIG.
26(c), the operating member 364 acts as a cassette holder at one end of the standard cassette.

Note that when ejecting, the second
Each member operates in the order shown in Figure 6 (c), (b), and (a).

Furthermore, when a small cassette is inserted as shown in FIG. 27 while the cassette holding mechanism 360 is in the state shown in FIG. 28 and a small cassette is inserted as shown in FIG. When the second door 220 is opened as shown in FIG.
Press the leaf spring portion 363b clockwise in the figure (also clockwise in FIG. 23). At this time, the operation piece 3 of the operation member 364
64b is located away from the second door 220, and
It does not come into contact with the door 220.

Therefore, as shown in FIGS. 23 and 27, the hook portion 364e of the operating member 364 remains engaged with the bottle 362, so that the presser member 363 is pressed by the plate spring portion 363b by the second door 220. Although it attempts to rotate toward the ceiling around the first shaft 365, this rotation is blocked and the same state is maintained, and the leaf spring portion 363b is elastically bent and the second door 220 is moved under the leaf spring portion 363b. It becomes a form that sneaks into.

Thereafter, when the holder 300 with the small cassette mounted moves as shown in FIG. The small cassette is pressed downward at the portion 363c.

When this small cassette is ejected, each member operates in the order of (b) and (a) in FIG.
As shown in FIG. 27(a), the plate spring portion 36 is
3b, the small cassette has a shorter width in the minor axis direction than the standard cassette, so the slide plate 3 mentioned above
The small cassette is ejected using a discharging means such as No. 31, but since the second door 220 sneaks under the leaf spring section 363b, the elastic force of the leaf spring section 363b acts as a dog, reducing the load of the ejecting operation. It becomes.

Therefore, as shown in FIG.
As shown in FIG. 7(C), it is guided by this arcuate portion 363r and is positioned above the leaf spring portion 363b, contrary to the position at the time of insertion. This reduces the load on the small cassette when discharging, making the discharging operation smooth and reducing the discharging power.

As shown in Figure 40(a), the small cassette consists of a cassette case that houses a supply reel and a take-up reel wound with magnetic tape, and a case that protects the magnetic tape stretched over the front of the cassette case. It is roughly composed of a movable lid. When this lid is opened, Figure 40 (
As shown in b), the upper end surface of the lid becomes higher than the upper end surface of the cassette case, creating a stepped portion. At the time of ejection, this stepped portion is hooked by the right side surface of the holding portion 363c of the plate spring portion 363b shown in FIG. 23 to close the lid. Note that the lid in the open state (in a small cassette that is biased in the closing direction by a spring, the lid automatically closes) due to the discharge operation of the small cassette is pressed against the holding part 363c of the plate spring part 363b.
Close the lid.

Next, the small cassette glue rad oven assembly rotation mechanism 3
70 is provided on the back surface of the top plate 303 of the holder 300, as shown in FIGS. 29 to 31, and its structure is as shown in FIGS. 29 to 32.
The first arm 373 is pivoted to a first shaft 376a provided on the mounting portion 371 of the top plate 303, and the cut-and-raised piece 37 of the top plate 303
The second arm 374 is pivoted to an operating pin 377 engaged with a second elongated hole 372a, and the third arm 375 is pivoted to a second shaft 376b together with both arms 373 and 374.

The third arm 375 is biased clockwise in FIG. 31(a) by a spring 376c provided on the second shaft 376b, but is biased clockwise relative to the first arm 373 by a stopper (not shown). is arranged so that it does not rotate as compared to the state shown in FIG.

A rotatable fan-shaped plate 378 is provided on the other end side of the operating pin 377, and a rack rod 379 that engages with this fan-shaped plate 378 and is movable in the left-right direction is provided. A gear 381 is located near the rack 379a and engages with the rack 379a, and an engaging portion 352 of the erroneous insertion prevention lever 351 of the erroneous insertion prevention mechanism 350 shown in FIGS. 21 to 22 is attached to the lower end. It has a pressing part 382 that presses the radiator oven assembly 3 which will be described later.
A guide plate 380 that guides the side surface of the small cassette when inserting the small cassette equipped with the small cassette 90 is pivotally attached to the third shaft 384. The guide plate 380 is biased counterclockwise in FIG. 30(b), that is, in the direction of the hanging state, by a spring 383 provided on the third shaft 384.

Therefore, when the first door 210 rotates when a standard cassette is inserted, the third arm 875
is pressed clockwise by the first door 210, and as a result, the operation pin 377 of the second arm 374 is pressed against the cut-and-raised piece 37.
The third fan-shaped plate 378 moves in the Y direction as the operating pin 377 moves in the Y direction.
It rotates as shown in Figure 0 (a) to (d).

Then, as the fan-shaped piece 378 rotates, the rack rod 379 slides in the direction shown in FIG.
The guide plate 380 meshing with the guide plate 79a changes from a hanging state to a sideways state substantially parallel to the top plate 303 as shown in FIG. 3(c).

As a result, the guide plate 380 provided with the lid opener assembly 390 is located between the inserted standard cassette and the top plate 803, so that it is moved to a position where it does not interfere with the insertion operation of the standard cassette. In addition, guide plate 3
80 is in the hanging state, as described above, the pressing portion 382 at the lower end presses against the incorrect insertion prevention lever 35 as shown in FIG.
However, as the lever 351 shifts to the sideways state, the pressing of the engaging portion 352 of the erroneous insertion prevention lever 351 is released as shown in FIG. 22.

When inserting a small cassette, the second door 220 does not come into contact with the third arm 375, so the above operation is not performed, and the guide plate 380 remains in a hanging state, so that one side of the small cassette to be inserted is guided by this guide plate. Guide at 380.

Further, as shown in FIG. 31, a leaf spring 305 is provided on the top plate 303 of the holder 300 in correspondence with the second shaft 376b, so that when the second arm 374 is pushed upward when inserting the standard cassette, , this leaf spring 305 comes into contact with the second shaft 376b and acts as a cassette holder for the other end of the standard cassette as shown in FIG. (The operating member 364 on the outside of the cassette holding mechanism 360 is acting).

Next, the small cassette glue rad oven assembly 390 is
It is provided on the guide plate 380 and shown in FIGS.
As shown in the drawings and FIG. 33, it consists of an arm gear 391 provided on one side of the guide plate 380 and a lid opener 395.

The arm gear 391 is rotatably supported by a shaft 391a provided in a guide plate 380, as shown in FIGS.
A pin 382 provided in the holder 382 is fitted to restrict its rotation range. It also includes a locking piece 392 and a gear portion 393.

The lid opener 395 is rotatably supported on a shaft 395a, and a spring 394 is locked between a pin 396 provided at a position offset from the shaft 395a and a pin 384 provided on the guide plate 380. Usually, Figure 33 (a
) is biased clockwise. Also, an opener section 39 has a gear section 397 that meshes with the gear section 393 of the arm gear 391, and a claw section 399 that protrudes into the small cassette storage space and opens the lid (front lid) of the small cassette.
It has 8.

On the other hand, the bottom plate 140 of the bracket 100 is provided with a rotatable arm gear hook 160 that is pivotally attached to, for example, the transmission shaft 409. As shown in FIGS. 3, 32, and 33, this arm gear hook 180 is biased counterclockwise in FIG. It is held in the state shown in FIG. 32 by contacting the end portion. Further, a hook portion 182 is provided which engages with the tip of the locking piece 392 of the arm gear 391, and this hook portion 16
A tapered portion 163 is formed on the outer surface side of 2.

Therefore, when the cassette is not attached, the guide plate 380 is in a hanging state as shown in FIG. It is in a state.

When a small cassette is inserted in this state as shown in FIG. 33(a), the opener portion 398 of the lid opener 395
The claw portion 399 engages with the inside of the lid (front lid) of the small cassette. Moreover, as mentioned above, the holder 300 itself
In order to move in the Y direction in Figure 3, arm gear hook 160
The tip of the locking piece 392 of the arm gear 391 is caught on the hook portion 182 of the arm gear 391, and as the holder 300 moves, the locking piece 3
92 is pulled in the X direction. Therefore, since the arm gear 391 rotates clockwise in FIG. 33 about the shaft 391a, the lid opener 395 rotates counterclockwise.

When the pin 396 crosses the line connecting the pin 384 of the guide plate 380 and the shaft 395a of the lid opener 395 as shown in FIG. In order to operate the lid opener 395, the lid opener 395 rotates counterclockwise in a clicking manner.
The state shown in Figure (C) is reached.

Accordingly, the lid of the small cassette, which is engaged with the claw part 399 of the opener part 398, changes from the closed state shown in FIG. 33(a) to the open state shown in FIG. 33(c).

When ejecting a small cassette, the holder 300 moves in the X direction with the lid opener assembly 390 in the state shown in FIG. 33(C). By moving the holder 300 in the X direction, the arm gear 391 is moved as shown in FIG. 33(d).
The tip of the locking piece 392 contacts the tapered portion 183 of the arm gear hook 180, and as the arm gear 391 moves in the X direction, pressure is applied to the arm gear 391 in a clockwise direction in the middle of the figure (c), causing it to rotate counterclockwise. .

Then, as shown in FIG. 33(b), when the pin 396 crosses the line connecting the pin 384 of the guide plate 380 and the shaft 395a of the lid opener 395, the biasing force of the spring 394 is Because it works clockwise in the diagram,
The lid opener 395 clicks clockwise and returns to its original state as shown in FIG.

Further, by moving the holder 300 in the X direction, the tip of the locking piece 392 of the arm gear 391 is again attached to the arm gear hook 1.
60, but the arm gear hook 160 rotates clockwise and overcomes this to be located on the front side (X side) of the original hook part 162 as shown in FIG. 33(a). become.

Next, the wire drawing mechanism 500 will be described. As shown in FIG. 1, the holder 300 includes a standard cassette detection switch 31B and a small cassette detection switch 33.
The wires 501 from the switches 813 and 335 are led out to the microcomputer on the VTR deck main body side. However, since the holder 300 moves, the holder 30
As the wire 501 moves, the wire 501 may get caught on other members on the VTR deck, which may cause the wire 501 to break or the holder 300 to become unable to move.

Therefore, for example, as shown in FIGS. 1 and 4, the holder 30
A wire lead-out member 502 is provided on the X direction side of the right guide pin 302a. This 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 in the same way as the guide pin 302a , as shown in FIG. 4, moves in conjunction with the movement of the guide pin 302a.

and wires 501 from each switch 313.335
may be led directly to the side plate 110 of the fixed bracket 100 through the through hole 504 of the lead-out member 502;
As shown in Figures (b) and (e), when the guide member 502 reaches the vertical part of the guide groove 112, the guide pin 3 in the figure
02a as a center, so in consideration of this, as shown in FIG.
It is desirable that the wire be appropriately wrapped around the wire and then led out to the outer surface of the side plate 110 of the bracket via the lead-out member 502.

As a result, the wire 501 is removed from the movable holder 300.
The wire 501 can be led out with an extremely simple configuration without damaging the holder 300 or preventing movement of the holder 300.

Next, regarding the support mechanism 600 of the holder 300, as shown in FIGS. 35 and 36, a small chassis 601 is provided on the deck side with a positioning bin 602 for a small cassette, a transmission gear 603, etc. This small chassis 601
is lowered when the standard cassette shown in Fig. 35 is installed,
When the small cassette shown in FIG. 36 is attached, it is raised.

Here, a holder 300 for a standard cassette and a small cassette
Due to the difference in the mounting height between the internal height position and the predetermined mounting position, when the standard cassette shown in Fig. 35 is installed, the height shown in Fig. 4 (b)
As shown in FIG.
1b), 302a (302b) are the guide grooves 111 (1
21).

112 (122), and this guide groove 1
Guide pins 301a (301b), 302a (302b) at the lowest ends of 11 (121) and 112 (122)
is supported, and the holder 300 is accurately positioned at the position shown in FIG.

However, when the small cassette shown in Fig. 36 is installed, the image shown in Fig. 4 (
As shown in C), the guide bin 301a (
301b), 802a (302b) is the guide groove 111
(121).

112 (122), the guide grooves 111 (121), 1.
12 (122) guide bin 301a (301b
), cannot support 302a (302b),
Regulation of the height position of the holder 300 is very weak. For this reason, the holder 300 may be slightly lowered from the predetermined position for some reason. In this case, the holder 300 may collide with a member such as an idler on the deck side, hindering its operation, or the pressing force of the small cassette holding mechanism 360 shown in FIG. 27 increases as the holder 300 descends. Interser mechanism 3
60 may be damaged due to excessive load.

Therefore, a support portion 604 that abuts and supports the holder 300 is formed on the small chassis 601.

Therefore, when the standard cassette shown in FIG. 35 is installed, the small chassis 60■ is in a lowered state, so the support portion 604 of this small chassis 601 does not come into contact with the holder 300;
When the small cassette shown in Fig. 36 is installed, the small chassis 6
01 has been raised, the support portion 604 of the small chassis 601 comes into contact with the bottom surface of the holder 300 that has moved, and supports this holder 300.

This makes it possible to reliably and easily prevent the holder 300 from dropping unnecessarily.

Next, the sequence for positioning the holder 300 according to the present invention will be described. As shown in FIG. 1 and FIG. cassette mounting standby position) than in the eject direction (
direction), and move the position (
After the hook 841 is pushed out by the hook release bin 343 to release the positioning operation, it is returned to the normal eject position. On the other hand, since this is not necessary when a standard cassette is attached, the holder 300 is stopped at the regular eject position when ejecting.

In this way, the holder 300
The movement controls are different. That is, finally the holder 3
The direction of movement when stopping 00 is opposite in the case of a small cassette and the case of a standard cassette, and it is extremely difficult to stop both at the same position due to sensor accuracy, mechanical back crash, etc.

Therefore, as shown in Fig. 37, a. When moving the holder 300 in the eject direction from the small cassette's in state (installed in a predetermined position), the holder 300 is moved beyond the normal eject position to the overstroke position. (The positioning by the hook 341 is released when moving to this overstroke position).

b. From the overstroke position, once beyond the eject position, the holder 300 is pulled in the required amount in the cassette mounting direction.

C. The holder 300 is moved in the ejecting direction again from the slightly retracted position and stopped at the normal ejecting position.

That's what I do.

As a result, the standard cassette and the small cassette can be moved in the same direction when stopped at the eject position, and both are stopped at the same position, thereby ensuring reliable and stable mounting of the next cassette.

FIG. 38 is a schematic hardware configuration diagram that implements the operation based on the sequence shown in FIG. 37, and FIG. 39(a)
and (b) similarly show an operation flowchart by the CPU for controlling the holder 300 during insertion and ejection of a cassette corresponding to the sequence shown in FIG.

In FIG. 38, a drive motor 401 that drives a holder 300 provided in a cassette housing is driven and controlled by a CPU 702 via a motor driver 701, and this CPU 702 controls each detection mechanism of a standard cassette and a small cassette. Detection signals from the left and right standard cassette detection switches 81L and 813 and the small cassette detection switch 335, and the main gear 40 to which the driving force of the drive motor 4 that drives the holder 300 are transmitted.
g (411) and detects that the small cassette and the standard cassette have moved to predetermined mounting positions based on the rotation angle of the main gear;
The drive motor 401 is activated in FIG. 39 (a) based on the detection signals of the sensors (corresponding to sensors S1 and S2 in FIG.
), (b).

When inserting a cassette as shown in FIG. 39(a), the cassette to be inserted is first identified, and the drive motor 401 is sequentially controlled to rotate in the FWD processing step.

Next, in the standby position determination step, it is determined whether the small chassis 801 and the moving mechanism on the main body side, such as the tape loading member, are at the loading standby position corresponding to the identified (inserted) cassette, and whether the cassette can be loaded as is. When the cassette is not in the standby position, the moving mechanism on the main body side is moved to the loading standby position corresponding to the identified cassette, and -< the processing step of moving the corresponding moving mechanism and starting the movement is executed. At this time, timer t is set to the initial value.

T (horizontal movement period of the holder 300 shown in FIG. 37), and if the movement mechanism on the main body side does not reach the loading standby position corresponding to the inserted cassette in the step of determining the standby position again, the timer is counted down. If the moving mechanism on the main body side is still not at the loading standby position after T time has elapsed, it is determined that if the drive motor 401 is controlled any further, the holder 300 and the moving mechanism on the main body side will collide, In the BRAKE processing step, the drive motor 401 is stopped (note that the movement mechanism on the main body side continues to move).

When the moving mechanism on the main body side reaches the position corresponding to the loaded cassette as the timer counts down, the process moves to a stop processing step to stop the moving mechanism on the main body, and then enters the vertical movement period shown in FIG. 37. Transfer and drive motor 4
01 (in addition, in the BRAKH processing step, the drive motor 401
If the rotation control is stopped, the forward rotation control will be restarted, otherwise it will continue).

If YES is determined in the first standby position determination step, and if the detection signal of the housing sensor S1 becomes 0° after the FWD processing step described above, the inserted cassette is a standard cassette or a small cassette. After the step of determining whether it is a cassette based on the detection signals of the respective detection switches 313 and 335 described above, if it is determined that it is a small cassette, the drive motor 401 is controlled to stop in the same manner as the BRAKE processing step described above, and the process ends. If it is determined that the cassette is a standard cassette, the drive motor 401 is stopped and the process ends after the detection signal of the housing sensor S2 becomes "0".Thereby, the holder 300 is moved as shown in FIG. Cassette insertion standby position (eject position)
to the first predetermined mounting position shown in FIG. 4(b) when a standard cassette is installed, and to the first predetermined mounting position shown in FIG. 4(c) when a small cassette is installed.
) and stops at a second predetermined mounting position that is slightly higher than the first predetermined mounting position.

Next, at the time of ejecting the cassette shown in FIG. 39(b) (indicated by the same symbols ■ to ■ as the symbols attached to the paths in FIG. 37), first, the ejecting shown in FIG. A REV processing step is executed to reversely control the drive motor 401 based on the operation signal, and the holder 300 is moved in the eject direction from the small cassette in state. And housing sensor S1. When the holder 300 reaches the eject position after going through each determination step of the detection signal of S2, 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, and if it is a standard cassette, the process moves to the BRAKE processing step. Then, the drive motor 401 is controlled to stop in order to stop the holder 300 at the normal ejection position, and the ejection process is completed.

On the other hand, in the case of a small cassette, a BRAKE processing step for stopping the drive motor 401 is executed after a processing step for a predetermined waiting time DELAYI to move the holder 300 by a predetermined amount in the eject direction beyond the normal ejection position.

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

Next, an FWD processing step is executed in which the drive motor 401 is sequentially controlled to rotate in order to pull the holder 300 from the overstroke position once beyond the eject position and into the cassette mounting direction by a required amount. Then, after the detection signal of the housing sensor S2 becomes "1" and the predetermined waiting time DELAY2 processing step according to the amount of retraction has elapsed, BRAK is activated again.
In the E process step, the drive motor 401 is controlled to stop. Thereafter, in order to move the holder 300 in the ejecting direction again from the position where the holder 300 has been pulled in in the cassette insertion direction, a REV processing step is executed in which the drive motor 401 is controlled to rotate in reverse, and the detection signal of the housing sensor S2 becomes "0". When this happens, that is, at the normal eject position, the drive motor 401 is stopped and the eject process is completed.

〔Effect of the invention〕

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 inserting a small cassette, unlock both the first and second doors.
Since only the door opening/socket is released, it is possible to prevent hands or foreign objects from being inserted through the door.In addition, each cassette can be inserted smoothly and reliably, and each cassette can be inserted and removed easily. This has the effect that the tape will not be damaged during operation.

[Brief explanation of drawings]

1 to 3 are a plan view and a front view showing the overall configuration of a cassette loading device according to an embodiment for explaining the cassette loading device according to the present invention, a front view with the door open, and FIG. Figures 4 (a) to (C) are explanatory views of movement of the mounting position when the cassette is installed, Figures 5 and 6 are explanatory views of the driving force transmission mechanism and the opening mechanism when the housing door is ejected, and Figure 7 is an explanatory view of the movement of the mounting position when the cassette is installed.
The figure is an explanatory diagram of the door seen from the back side, Figures 8 through 16 are explanatory diagrams of the door lock and release mechanism, Figures 17 through 19 are explanatory diagrams of the opening operation when the housing door is ejected, and Figure 20 is an explanatory diagram of the opening operation when the housing door is ejected. Figures (a) and (b) are explanatory diagrams of the small cassette detection mechanism and positioning mechanism, Figures 21 and 22 are explanatory diagrams of the mechanism for preventing incorrect insertion of small and standard cassettes, and Figure 2
Figures 3 to 28 are explanatory diagrams of the small cassette holding mechanism;
Figures 29 to 31 are explanatory diagrams of the small cassette glue rad oven assembly rotation mechanism, Figures 32 and 33 are explanatory diagrams of the small cassette glue rad oven assembly, and Figure 34 (
a) and (b) are schematic diagrams and front views showing the relationship between the wire lead-out member and the guide pin, Figures 35 and 36 are explanatory diagrams of the holder support mechanism, and Figure 37 is when the cassette is inserted and ejected. 38 is a schematic hardware configuration diagram for implementing operations based on the above sequence, and FIGS. 39(a) and (b)
Similarly, FIGS. 40(a) and 40(b) are an operation flowchart of the CPU 702 for controlling the holder 300 during insertion and ejection of the cassette corresponding to the above sequence, and FIGS. 40(a) and 40(b) are a perspective view and a side view of the small cassette. 150: Cassette insertion slot, 200: Housing door, 2
1O: First door, 210A: Notch, 220: Second door, 240: First door lock mechanism, 241 Ni door lock member, 243: L piece, 244: Engagement recess, 245.2
48: Taper portion, 250: First door lock release mechanism, 251 + first door lock release member, 252: Contact portion, 253.254: Taper portion, 1000: Second door lock mechanism, 1001: Second door lock member , 100
3: Step, 1004: Small cassette receiver, 100
5: Standard cassette receiving part, 1006: Lock part, 2
000: Second door lock mechanism, 2002: Second door lock release member. Inventor Masamasa

Claims (1)

[Claims] (1) In a front-loading type cassette loading device in which a standard cassette and a small cassette are selectively inserted from the cassette insertion opening on the front of the main unit and each is installed at a predetermined mounting position, the width of the cassette insertion opening is the standard. The width is approximately the same as the width of the cassette, and the cassette insertion opening is provided with a rotatable first door that opens and closes the entire cassette insertion opening. A notch having a width substantially the same as the width of the small cassette, and a rotatable second door for opening and closing the notch, and engaging with the first door at both widthwise ends of the cassette insertion slot. a locking portion that locks and prevents rotation; and a standard cassette inserted in front of the first door engages and is pressed to prevent the locking portion from engaging the first door. A first door lock member having a tapered portion for unlocking the first door is provided, and the first door lock member is provided at both left and right end positions of the second door at the bottom of the cassette insertion slot and engages with and locks the second door. a locking part that prevents the rotation of the standard cassette; and a standard cassette receiving part that releases the standard cassette inserted from the front bottom opening of the second door and is pressed by the bottom of the standard cassette to release the lock of the second door. and a small cassette receiving part that comes off the opening at the bottom of the front face of the inserted small cassette and is pressed by the bottom surface of the small cassette to unlock only the second door. Cassette loading/loading device.