JPH0487055A - Cassette loader - Google Patents

Abstract

PURPOSE:To selectively load a large or small cassette by fitting a discharge arm capable of oscillating in the direction of inserting a small size cassette and also abutting against a lid of the small size cassette to a drive shaft suspended freely rotatably over an upper part of a cassette holder and turning this shaft with a drive shaft rotating mechanism. CONSTITUTION:The discharge arm 111 suspended from the drive shaft 101 is provided, and at the time of ejecting the small size cassette C1, a drive shaft 101 is rotated and the small size cassette C1 is returned to an inserting hole by the discharge arm 111. Consequently, the small size cassette C1 can be discharged by simple constitution, and also the small size cassette C1 is largely protruded like a large size cassette C2 by a discharge operation. By this method, the large and small cassettes having nothing in common about their sizes and lid structures can selectively be loaded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to improvements in front-loading cassette mounting devices.

(Prior Art) Tape cassettes (hereinafter referred to as "cassettes") that store magnetic tapes are used for broadcasting, business, and home use due to differences in the width of the magnetic tape, the relative speed of the tape head, and the signal processing means. Many different types are used. These are, for example, VH3 (registered trademark) format, M
It is given names such as II format, DI format, and DI+ format.

Although there are various types of magnetic tape recording and reproducing apparatuses (hereinafter abbreviated as rVTRJ) compatible with the above-mentioned cassettes, VTRs that can commonly handle different types of cassettes have also been developed. for example,
VHS type VTRs that can selectively handle standard cassettes and small cassettes are becoming popular.

FIG. 23 is a perspective view of a standard cassette C2, showing a supply reel 211 wound with magnetic tape (not shown) inside a frame 210.
and a take-up reel 212 are housed therein. An opening 213 into which a tape loading member for pulling out the magnetic tape fits is formed on the front side, and an opening 213 is formed on the front side of the magnetic tape (
A lid (front lid) 214 is provided to cover the main body (not shown). Further, 215 is a reference hole for positioning, and 216 is a reference surface for height determination.

FIG. 24 is a perspective view of the small cassette C1, in which a supply reel 22 on which magnetic tape (not shown) is wound inside the frame 220.
1 and a take-up reel 222 are stored therein.

An opening 223 into which a tape loading member for pulling out the magnetic tape fits is formed on the front side, and a lid (front 224) is provided to cover the magnetic tape (not shown) on the front side. 227 is a reference hole for positioning, 227 is a reference surface for height determination, and 226 is a protrusion for unlocking the lid 224, which is provided to protrude from the side surface.

FIG. 25 is a diagram showing the arrangement relationship when the standard cassette C2 and the small cassette C1 are installed. .221 is on the same axis.

(Problems to be Solved by the Invention) As described above, the size of the small cassette in the front-rear direction (insertion direction) is extremely small compared to the large cassette. Therefore, large
In a VTR that can selectively handle small cassettes, the small cassettes generally protrude by a small amount from the cassette insertion slot when ejected, and are difficult to remove.

For this reason, a slide plate that is biased toward the cassette insertion port by a spring is provided, such as the cassette ejection mechanism used in car stereos, etc., and this slide plate is used to eject the cassette when ejecting the cassette. However, in the case of the above-mentioned VTR cassette, the front of the lid is supported by the slide plate, making it impossible to open the lid, and the slide plate for discharging the small cassette C1 gets in the way of inserting the standard cassette C2. It was something.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to facilitate the removal of small cassettes in a front loading type cassette mounting device in which large and small cassettes are selectively mounted.

(Means for Solving the Problems) In order to achieve the above object, the present invention has a main body in which large and small cassettes can be selectively inserted from the cassette insertion slot on the front surface of the main body.
The inserted cassette is supported by a cassette holder, and this cassette holder is movably supported by a bracket.A rotatable drive shaft is hung over the cassette holder of a front-loading type cassette loading device, and this shaft is The present invention is characterized in that a discharge arm is attached which is swingable in the insertion direction of the small cassette and comes into contact with the lid of the small cassette, and the drive shaft is configured to be rotated by a drive shaft rotation mechanism.

(Function) When the lift of the small cassette is opened, the discharge arm is retracted upward, and when the small cassette is ejected, the drive shaft is rotated, the discharge arm pushes out the small cassette, and the small cassette is ejected from the cassette insertion slot. Make the part protrude.

(Example) Embodiments of the present invention will be described below based on the accompanying drawings.

In order to facilitate understanding, an overall explanation will be given first.

FIG. 2 is a plan view of the cassette loading device according to the present invention with the top plate removed, and FIG. 3 is a front view of the same.

The cassette mounting device 1 is roughly divided into a bracket 10 constituting a cassette housing body, a first cassette insertion slot 20 on the front surface of the bracket 10, a first door 21 that blocks this, and a first door 21. A second cassette insertion slot 30 formed with a cutout and a second door 31 that closes the second cassette insertion slot 30
It consists of a cassette holder 40 movably disposed within the bracket 10, and a movement mechanism 50 for the cassette holder 40 (referred to as "holder movement mechanism").

These configurations will be explained in detail below.

The bracket 10 includes left and right side plates 11, 12 and a top plate 13 (
3) and a front panel 14, and the right side panel 12 has a lid (front M) of a standard cassette C2 (hereinafter referred to as a "large cassette" in contrast to a "small cassette" described later). A lid opener member 15 is provided for opening the lid.

The first cassette insertion port 20 is for the large cassette C2, and the second cassette insertion port 30 is for the small cassette C1.For convenience of aligning the centers of the supply reels built into the cassette, as shown in FIG. , the first and second cassette insertion slots 2
0.30 is characterized by the fact that both the left and right ends are not in the same position.

As shown in FIG. 3, the first door 21 is a large door that almost blocks the first cassette insertion slot 20, and the second door 3
1 is much smaller in width (left and right dimensions) than the first door 21.

FIG. 4 is a cross-sectional view of the first and second door parts. door 31
The upper end thereof is swingably locked to the first door 21 by a short shaft 32.

In addition, at both left and right ends of the front surface of the second door 31, there are convex upper guides 33. for guiding the small cassette C1.
There are 33.

FIG. 5 is a diagram showing the area around the second cassette insertion opening.
The small cassette C1 manually inserted into the cassette insertion slot 30 is inserted into the left and right upper guides 33 of the second door 31.
．． 33 and lower guides 34 and 34 of the left and right second door rotor members 82, which will be described later, are used to fix the position in the vertical and horizontal directions.

As shown in FIG. 2, the cassette holder 40 has a mouth shape when viewed from the front from a bottom plate 41, a top plate 42, and left and right side plates 43 and 44 (described later in FIG. 10), and its width is approximately the same as that of a large cassette. A large cassette storage section is formed for storing a large cassette, and a small cassette storage section is formed inside the large cassette storage section. Note that the inner surface (upper surface) of the bottom plate 41 is a flat surface.

The cassette holder 40 is moved by a holder moving mechanism 50 between a cassette insertion standby position and a cassette predetermined device position shown in FIG. For that purpose, the holder moving mechanism 5
0 transmits the driving force of the housing motor 51 in the upper right corner of the figure to the lower force in the figure via a belt 51 and a gear train (not shown), and swings the left and right main gears Mg. Left and right main gear M
g is provided with a two-pronged fork portion, and this fork portion similarly swings as the main gear Mg swings. On the other hand, pins (not shown) protrude from the left and right sides of the cassette holder 40, and these pins engage with abbreviated guide grooves (not shown) formed on both side plates 11 and 12 of the bracket. . The left and right pins are connected to the hawk part via guide grooves, and the hawk is narrowed so that it can move six times in the longitudinal direction.The housing motor 51 of the holder moving mechanism 50 is started, and the hawk part is moved as shown in FIG. When tilted in the Y direction, the cassette holder 40 moves in the Y direction.
It moves in the direction and then descends (towards the back of the figure).

Next, the locking mechanism of the first and second doors will be explained. 1st
・The second door is locked except when necessary (when loading and unloading cassettes) to prevent foreign objects from entering. This point will be explained next based on the drawings.

FIG. 6 is a front view of the first and second doors, and FIG. 7 is a plan view of the same. First door lock mechanisms 60 and 60 are provided on the left and right sides of the first cassette insertion slot 20. The first door rotor mechanism 60 has an S1 door rotor member 62 that swings around a fulcrum 61 on the front panel 14 as a main component.
As shown in FIG. 7, the door rotor member 62 includes a front tapered portion 63 that can be retracted into the first cassette insertion slot 20, and a locking recess 62a formed by a claw portion 64 that can be engaged with the rear surface of the first door.
It has a rear tapered portion 65 that is used when pushing out the claw portion 64 of the locking recess 62a to the open position.

A large cassette detection switch 66, 66 (for example, a button head type limit switch) is provided on the outer side of the first door lock member 62, 62, and both switches 66, 66 are provided.
．． 66 is on, it is determined that a large cassette has been inserted.

If only one of the detection switches 66 is turned on, it is determined that the cassette has been inserted by mistake.

When the large cassette C2 is installed in the predetermined mounting position, the first door 21 is closed and locked by the first door locker member 62, but the large cassette C2 installed in the predetermined mounting position is closed. When opening the first door 21 at the time of ejection (extraction), it is necessary to at least release the lock.

The first door lock release mechanism 70 includes a first door lock release member 72 that is swingably supported on a shaft 71 that extends horizontally between the left and right side plates 11 and 12 of the bracket 10 behind the first door 21. The main body of the first door unlocking member 72 is scene-shaped, and the end opposite to the door (upper part in the figure) is positioned upward and the front side is positioned downward by means of a spring (not shown). Then, the first
An operating portion 73 having a tapered surface related to the rear tapered portion 65 of the door lock member 62 is formed, and has an abutting portion 74 on the back side that abuts the lower surface of the large cassette. Therefore, when the large cassette C2 that is mounted to a predetermined mounting position for recording and playback comes down, the contact portion 74
is pushed down, the actuating part 73 is raised, and this actuating part 73
By pushing out the first door lock member 62 in the opening direction (arrow ■), the lock by the first door lock mechanism 60 is released.

A second door locking mechanism and a second door release mechanism for the second door will now be described.

The second door lock mechanism 80 is provided on the front panel 14 at both left and right end positions of the second cassette insertion slot 30, as shown in FIG. 8-8
As shown in FIG. 8, which is a line cross-sectional view, the main elements of the second door lock mechanism 80 are left and right second door lock members 82 rotatably supported on the front panel 14 by shafts 81, Although it is biased clockwise by the spring in FIG. 8, a part of it comes into contact with a part of the front panel 14 and is held in the horizontal state shown in the same figure, and is rotated counterclockwise from this horizontal state. It is possible.

As shown in FIG. 5 when viewed from the front, the second door lock member 82 is lower by a step, and a small cassette portion 83 that matches the width of the small cassette C1 is formed with a notch, and a higher point outside of the small cassette portion 83 is formed with a notch. The large cassette volume has a surface 84, and this step is connected to the lower guide 34.34 of the small cassette C1 mentioned above.
It is said that

The tip of the second door lock member 82 (left side in FIG. 8)
A lock portion 85 that can be engaged with the left or right lower end of the second door 31 is provided in a protruding manner. Therefore, in the state shown in FIG. 8, the second door 31 is not rotated counterclockwise, that is, is not opened, but is in a locked state. When the second door lock member 82 is rotated counterclockwise in the same figure, the second door 31 is opened.

The second door unlocking mechanism 90 for forcibly opening the second door locking mechanism 80 may be any mechanism that pushes down the second door locking member 82, so for example, it may be screwed to the shaft 71 (FIG. 7). The operated lever 91.91 is swung (indicated by the arrow ■ in FIG. 8), and the pin 86 on the second door locking member 82 side is pushed down to release the lock.

Note that the shaft 71 is rotated by an operating lever 93 at the left end in FIG. The shaft 71 and the operating lever 93 are biased counterclockwise in FIG. 8 by the action of the torsion spring 94, but they are restricted by a stopper (not shown) and cannot rotate counterclockwise further than in the figure (clockwise rotation only). Possible).

As described above, in the cassette loading device of this embodiment, since both the first door 21 and the second door 31 are locked and held in the closed state, it is difficult to insert a cassette of a different type or manually. Even if you try to push it open, the first door 21
Since the second door 31 does not open, it is possible to prevent erroneous insertion of a different type of cassette, and it is also possible to prevent, for example, children from inserting their hands and damaging the VTR device or causing injury.

The small cassette C1 passed through the first cassette insertion port 20
is the cassette holder 4 prepared for the large cassette C2.
However, because the cassette holder 40 is large,
It is necessary to position the small cassette C1 separately from the large cassette C2.

Therefore, in this embodiment, the front positioning mechanism, the detection mechanism, the left and right positioning mechanism, the lid opener mechanism, the cassette holding mechanism, and these mechanisms of the small cassette C1 are collectively placed below the top plate 42 of the cassette holder 40. It is equipped with a holding means such as a mechanism for holding a small cassette. These will be explained based on the following drawings.

Figure 9 is a plan view showing the lower part of the top plate of the cassette holder in Figure 2 (however, Figure 2 has been rotated by 180 degrees), Figure 10 is a view taken from arrow 10 in Figure 9, and Figure 11 is 11-1 in Figure 10
12 is a sectional view taken along line 12-12 in FIG. 10, and FIG. 13 is a sectional view taken along line 13-13 in FIG. 9.

The small cassette mechanism holding means 100 includes a long drive shaft 101 (the top plate 4 of the cassette holder) shown in FIG.
2) from the first support arm 10
2 and 102 are extended downward in the figure, and arms 102 and 102 are fixed to the drive shaft 101), a support shaft 103 is spanned over the ends of these arms, and lock arms 104 and 104 are rotatably attached to this support shaft 103. A second support arm 105° 105 extends downward in the drawing and is rotatably connected to the drive shaft 101 (in Fig. 11, it can only rotate counterclockwise due to the effect of a stopper not shown in the drawings, but can rotate further clockwise). (which does not move) are attached and extend downward in the figure, and a lock shaft 106 is spanned over their tips. As shown in FIG. 11, the first support arm 102, the lock arm 104, and the second support arm 105 form a triangle with the drive shaft 101 at the apex. Lock arm 104 corresponding to the bottom
The distal end thereof is a hook portion 104b, which engages with the lock shaft 106 from above.

The bottom surface 1 of the lock arm 104 in FIG.
04a is located above the top surface of the small cassette C1 and below the top surface of the large cassette C2.
The small cassette mechanism holding means 100 consisting of the above is unique in that it retracts the small cassette mechanisms upward all at once when the large cassette C2 is inserted. As shown in the figure, two sets of lock arms 104, 104, etc. are provided on the left and right sides, but the arrangement is not limited to this, and 1!11 may be provided near the center, or the width (in the left-right direction in FIG. 9) may be expanded.

The front positioning mechanism 110 of the small cassette C1 is connected to the second support arm 105° 105 of the drive shaft 101.
It is composed of a pair of stopper arms 111 and 111 which also serve as discharge arms and are suspended outside of the small cassette 1-CI in the area of the small cassette 1-CI shown by imaginary lines in FIG. The stopper arm 111 has its base rotatably locked to the drive shaft 101, bends toward the tip, has a locking part 112 shown in FIG. 11 there, and is rotated clockwise in the figure by a stopper (not shown). It cannot be rotated (as shown in the diagram, it can only be rotated counterclockwise. It is always biased clockwise by a torsion spring).

As shown in FIG. 9, the small cassette detection mechanism 120 includes a small switch means (for example, a micro limit switch) attached to the side of the stopper arm IIIJIIO.
121, 121, and operation pins 122, 122 extending left and right outward from the second support arm 105°105, and in FIG. At the same time, the small switch means 121, 121 rise and come into contact with the operating bins 122, 122 waiting above, and the small switch means 1
21 and 121 are both turned on. With this, it is detected that the small cassette C1 has been inserted to a predetermined position.

The small cassette C1 glue rad oven mechanism 130 has a first
It is suspended from the drive shaft 101 slightly to the left of the center of FIG.

As shown in FIG. 12, the base portion 131 is pressed against a stopper (not shown) by a spring (not shown) that biases it in the clockwise direction, so that it can rotate counterclockwise from the position shown in the figure. .

Further, in FIG. 10, the opener 132 is pressed against a stopper by a counterclockwise biasing spring (not shown), so that it can rotate clockwise from the position shown in the figure.

The left and right positioning mechanism 140 for the small cassette C1 includes a pair of side guide levers 141 extending from the drive shaft 101 so as to sandwich the small cassette C1 from left and right sides.
141, and a spring (
(not shown) is pressed against a stopper (not shown), and is able to swing in the cassette insertion direction from the position shown in the figure.

Note that the guide lever 141 on the left side of the figure also serves as a lid rotor release member for the small cassette C1, as will be described later.

The cassette holding mechanism 150 is a mechanism that holds down the small cassette C1 and the large cassette C2 in the cassette holder 40 from above, and as shown in FIG.
1 is a seesaw-shaped cassette holding support arm 151, 15.
1, and these cassette holding support arms 151, 1
A presser support shaft 152 is hung over one end of the presser foot 51 (upper side in FIG. 9), and the bases of the first cassette presser 153 and the second cassette presser 154 are attached to this presser support shaft 152 (in a V-shape in FIG. 13). Install. Note that the first cassette holder 153 is rotatably fitted to the holder support shaft 152, and the second cassette holder 154 is fixed.

Further, the operation parts 151a, 151a at the other ends of the cassette presser support arms 151, 151 (lower part in FIG. 9) protrude above the top plate 42 of the cassette holder 40, as shown in FIG. Cam part 13a provided in 13
is in contact with.

In addition, the above-mentioned cassette presser support arm 151.151 is
In FIG. 13, the drive shaft 101 is biased counterclockwise by a spring. Further, the first cassette presser foot 153 is pressed against a stopper (not shown) by a spring (not shown) that urges the presser foot support shaft 152 in a clockwise direction, and can be rotated counterclockwise from the position shown in the figure. and large and small cassettes C2 and CI at the lowest position.
It is made to come into contact with the top surface of.

Incidentally, the cassette holding mechanism 150 is used to hold down not only the small cassette C1 but also the large cassette C2, and in pressing the large cassette C2, the pressure by the first and second cassette presses 153 and 154 is sufficient. Yes, but
If it is necessary to further press both ends of the large cassette C2, a cassette holding member such as a well-known plate spring may be provided as necessary.

Returning to FIG. 9, what is shown on the left side of the figure is the drive shaft rotation mechanism 160, which includes a drive motor 161 and a gear group 16.
2→cam gear 163→cam groove 164→rack 165 that moves in the vertical direction in the figure→pinion 166→ This is a mechanism that rotates the shaft 101 in the forward and reverse directions.

The overall configuration of the cassette loading device 1 according to the embodiment has been described above, and the present invention is also applicable to FIGS. It is characterized by consisting of a small cassette discharge mechanism mainly consisting of a drive shaft rotating mechanism 160, a drive shaft 101, and a stopper arm 111 that is pivotally supported by the drive shaft rotation mechanism 160 and also serves as a discharge arm, as shown in FIG.

The operation of the cassette loading device having the above configuration will be described below. In order to make it easier to understand, the overall explanation will be given first, and the operation of the first and second doors, insertion of the small cassette C1,
The order of insertion of the large cassette C2 will be described.

14(a) to 14(f) are explanatory views of the operation of the first door 21, and FIGS. 15(a) to 15(f) are explanatory views of the operation of the second door 31.

In FIG. 14(a), when the large cassette C2 is inserted from the first cassette insertion port 20, both ends of the large cassette C2 are attached to the front tapered portions 63 of the left and right first door lock members 62.
(Fig. 7) is pushed outward against a spring (not shown), the first door lock member 62 rotates around the fulcrum 61 (arrow ■ in Fig. 7), and the first door lock member 62 rotates (arrow ■ in Fig. 7). Since the locking recess 62a of the member 62 and the end of the first door 21 are disengaged, the first door 21 is unlocked.

On the other hand, as shown in Fig. 14(b), large cassette C2
The bottom surface of the dog-shaped cassette presses the surface 84 of the second door locking member 82, and the second door locking member 82 rotates counterclockwise in the figure around the shaft 81, resulting in the state shown in FIG. 14(C). Therefore, the lock portion 85 of the second door lock member 82 comes off from the second door 31, and the second door 31 is unlocked. As a result, the first door 21 and the second
Since the door 31 is rotatable, it is pushed open by the inserted large cassette, and the large cassette C2 is opened as shown in FIG.
Cassette holder 40 shown in d) (not shown in the figure)
14(e) and reaches the predetermined mounting position shown in FIG. 14(f) by the operation of the holder moving mechanism 50.

When the standard cassette C2 is installed in the predetermined installation position shown in FIG. 14(f), the rear end of the lower surface of the large cassette C2 comes into contact with the contact portion 74 of the first door lock release member 72 shown in FIG. The first door unlocking member 72 rotates around the shaft 71 in order to press the first door lock.
Since the lower part of the rear tapered part 65 of the door lock member 62 is pressed outward and supported by the tapered surface of the actuating part 73 of the first door unlocking member 72, the first door 21 is maintained in the unlocked state. .

On the other hand, the left main gear M that should move the cassette holder 40
14(e) and 14(f), the pin Mgl provided on the left main gear Mg comes into contact with the operating lever 93 and pushes it up in the clockwise direction in the figure. The shaft 71 also rotates clockwise, and the operating piece 91 also rotates clockwise in the figure to lock the second door lock member 8.
Since the second door 31 is held in contact with the second pin 86, the second door 31 is maintained in the unlocked state.

As a result, when the large cassette C2 is installed in the predetermined mounting position, both the first door 21 and the second door 31 are unlocked, and when the large cassette C2 is ejected, the housing door (not shown) is opened. Due to the lid mechanism, there is no problem when opening both the first door 21 and the second door 310.

In addition, the first door 21 and the second door 21 shown in FIG.
When the small cassette C1 is inserted from the second cassette insertion slot 30 with the door 31 locked, the first door lock member 62 does not operate because the small cassette C1 does not engage with the left and right first door lock members 62. No, first
The door 21 remains open and locked.

On the other hand, as shown in FIG. 15(b), the bottom surface of the inserted small cassette C1 pushes the small cassette receivers of the left and right second door lock members 82, and the second door lock member 82 rotates around the shaft 81. Rotate counterclockwise in the figure to Figure 15 (C)
Since the state shown in FIG. 1 is reached, the lock portion 85 of the second door rotor member 82 comes off from the second door 31, and the second door 31 is unlocked.

As a result, the first door 21 cannot rotate and only the second door 31 can rotate, so only the second door 31 is pushed by the inserted small cassette C1 and opens. The small cassette C1 is inserted into the cassette holder 40 (not shown in the figure) as shown in FIG. 15(d).

At this time, the left and right second door rotor members 82 (Figure i5) are
Small cassette C inserted with its lower guide 34.34
While guiding the left and right lower corners of 1, the upper guide part 3
3. Guide the left and right upper corners of the small cassette C1 at 33. This restricts the movement of the small cassette C1 in the left and right direction, so that the small cassette C1 can be reliably inserted into a predetermined position in the left and right direction. Furthermore, the small cassette C1 mounted in the cassette holder 40 by the operation of the holder moving mechanism 50 passes through FIG.
The predetermined device position shown in Figure (f) is reached.

When the small cassette C1 is installed in the predetermined mounting position shown in FIG.
Since it does not come into contact with the door lock release member 72 (see FIG. 7), the first door lock release mechanism 70 does not operate, and the first door 21 is held in the locked state by the first door lock member 62. Ru. On the other hand, the operating piece 91 of the second door lock release mechanism 90 rotates clockwise in the figure in the same way as when the large cassette C2 is installed, and comes into contact with and holds the pin 86 of the second door lock member 82. , the second door 31 is maintained in the unlocked state.

As a result, only the second door 31 is unlocked when the small cassette C1 is installed in the predetermined mounting position, and only the second door 31 is opened by the opening mechanism (not shown) when the small cassette C1 is ejected. It will not cause any trouble.

Fig. 16 (a) to (f) are insertion action diagrams of the small cassette C1, Fig. 17 (a) to (d) are action diagrams of the small cassette C1 glue rad oven, and Fig. 18 (a) to (e) are FIGS. 19(a) and 19(b) are diagrams showing the action of the cassette holding mechanism on the small cassette C1, and FIGS. 19(b) are diagrams showing the ejection action of the small cassette C1.

The small cassette C1 is passed through the second door 31 in FIG.
a) and FIG. 18(a), the cassette holder 4
When the small cassette C1 is inserted into the 0 position, the small cassette C1 is guided by the left and right side guide levers 141, 141 shown in FIG. 9, and its position in the left and right direction is performed.

As shown in FIG. 18(b), the upper part of the tip t#6 (lid side) of the small cassette C1 is attached to the first cassette presser 153.1.
53, and by further insertion, the first cassette presser 1
53, 153 rotate slightly counterclockwise as shown in FIG. 18(C) against the biasing force of a spring (not shown), thereby pressing the top surface of the tip of the inserted small cassette C1.

Then, as shown in Fig. 16(b), the small cassette C
The front end surface of 1 is the locking part 1 of the stopper arm 111, 111
12, 112, and further insertion results in FIG. 16 (
C) As shown in FIG.
The movement of the small cassette C1 is stopped by contacting the operation bins 122, 122 of No. 5, and the small cassette C1 is firmly stopped.
The forward position at the time of insertion is determined.

At this time, the side guide lever 141 on the central side pushes the lid lock release protrusion 226 protruding from the side surface of the small cassette C1 to hold the lid 224 in the unlocked state and as shown in FIG. 17(a). The small cassette C1 glue rad opener mechanism 130 has its opener 13
2 is located slightly in front of the lid.

Also, at this time, the small switch means 121, 121 of the left and right small cassette detection mechanisms 120 provided on the stopper arms 111, 111 are pushed by the operation bins 122, 122 and are both turned on, so that the small cassette 01 is pushed into the predetermined position. Detect the situation.

This small cassette detection mechanism 120 switch means 121.
121 detects that the small cassette c1 has been inserted into a predetermined position, the housing motor 51 is driven and the cassette holder 40 moves in the direction to retract the cassette (to the right in FIG. 18).

Along with this movement, the cassette presser support arm 151°15
The first operation parts 151a, 151a are guided by the cam part 13a provided on the top plate 13 of the bracket 1o. This led to the 18th
As shown in Figure (d), the cassette presser support arm 151
, 151 rotate counterclockwise around the drive shaft 101, and the tip of the second cassette holder 154 presses the rear upper surface of the small cassette 1-CI, pressing the small cassette C1 from the front and back to reliably prevent movement. - to do.

The rotation of the cassette presser support arms 151, 151 increases the urging force of the spring provided on the presser support shaft 152 of the first cassette presser 153, 153, thereby increasing the pressing force against the cassette. As a result, when inserting the small cassette c1, the first cassette presser 1
The force pushing up 53 is reduced to reduce the load upon insertion.

After the small cassette C1 is held down from the front and back, the movement of the cassette holder 40 is temporarily stopped, and the drive motor 161 is driven to rotate the drive shaft 101 by a required amount counterclockwise in FIG. 16. When the stopper arms 111, 111 rotate counterclockwise in the figure as shown in FIG. 16(d) due to this rotation of the drive shaft 101, the small cassette C1 will be placed in the rad oven mechanism as shown in FIG. 17(b). 130 opener 132 is a small cassette c
It is caught on the lid 224 of No. 1. Due to further rotation of the drive shaft 101, the stopper arms 111, 111
The opener 132 rotates through FIG. 16(e) to FIG. 16(f) so as not to interfere with the operation of the lid oven.At the same time, the opener 132 also rotates through FIG. 17(C) and rotates as shown in FIG. (d) Since it rotates counterclockwise to the position shown in (d), the lid 224 of the small cassette C1 is opened and kept in the oven state. At this time, as shown in FIG. 18(e), since the front and rear upper surfaces of the small cassette C1 are pressed by the first and second cassette holders 153, 154, the small cassette C1 will not be lifted up by the lid oven operation.

When the lid oven operation is completed, the housing motor 51 is driven again, and the cassette holder 40 is lowered and mounted at a predetermined mounting position.

When ejecting the small cassette C1 mounted at a predetermined mounting position, the housing motor 51 and the drive motor 161
is rotated in the opposite direction to that described above, which is the opposite of the operation at the time of insertion, but even if the stopper arms 111, 111 return to the initial state shown in FIG. 16(a) by rotation of the drive motor 161 in the opposite direction. The drive motor 161 further rotates in the opposite direction by a predetermined amount, and then rotates the stopper arms 111, 111 clockwise.

As a result, the small cassette C1 is pushed out in the direction of the M2 cassette insertion opening 30 by the stopper arms 10, 112 to the position shown in FIG. This makes the removal operation easier.

The stopper arm Ill, 111, which has finished discharging a predetermined amount of the small cassette C1, is operated by the drive motor 16 again.
1 returns to the initial state (FIG. 16(a)).

Figures 20 (a) to (e) are diagrams showing the insertion action of the large cassette C2, Figures 21 (a) to (C) are diagrams showing the large cassette C2 and the lid opener, and Figures 22 (a) to ( e
) is an operational view of the cassette holding mechanism for the large cassette C2.

The large cassette C2 is passed through the first door 21 in FIG.
) and the cassette holder 40 as shown in FIG. 22(a).
When the large cassette C2 is inserted into the lock arm 104, the top end (lid side) of the large cassette C2 is inserted into the lock arm 104 as shown in FIG. 20(b).
, 104 and push it up. As a result, the hook portions 104b, 104b of the lock arms 104, 104 are removed from the lock shaft 106, and the second support arms 105, 104 are removed from the lock shaft 106.
5 becomes rotatable.

As a result of further insertion, the front end surface of the large cassette C2 becomes attached to the stopper arms 111 and 111 as shown in FIG. 20(C).
When the large cassette C2 collides with the locking parts 112, 112, the stopper arms 111, 111 are pushed by the large cassette C2 and rotated counterclockwise in the figure around the drive shaft 101. 2 support arms 105, 105 are retracted to a position above the large cassette C2, as shown in FIG. 20(d), so as not to interfere with the insertion operation of the large cassette C2. Then, it comes into contact with a cut and raised piece 41a (see FIG. 2) formed on the Y end side of the bottom plate 41 of the well-known cassette holder 40, and its insertion front position is determined.

At this time, the small cassette glue rad oven mechanism 130 is also pushed upward by the inserted large cassette C2 as shown in FIGS. 21(a) to 21(c).
This is done so that it does not interfere with the insertion operation.

In addition, the inserted large cassette C2 is shown in Fig. 22(b).
As shown in the figure, the upper surface of the large cassette C2 comes into contact with the first cassette pressers 153, 153 and pushes them up.
The front upper surface of the large cassette C2 is pressed by the biasing force of the springs provided in the first cassette holders 153, 153 (however, the load is such that it does not become an excessive load during insertion).

Then, as shown in FIG. 22(C), when the small cassette C1 is opened during insertion, the small cassette C1 comes into contact with the cut and raised piece 41a of the cassette holder 40, and then the insertion force causes the cassette holder 40 to
When the cassette holder 40 moves slightly, the housing motor 51 is driven and the cassette holder 40 is moved. As the cassette holder 40 moves, the first door 2 opens as shown in FIG. 22(d).
1 deviates from the rotation locus of the second cassette holder 154, the operation parts 151a, 151a of the cassette holder support arm 151.151 come off the cam part 13a provided on the top plate 13 of the bracket 10, .151 rotates counterclockwise around the drive shaft 101, and the rear upper surface of the large cassette C2 is pressed by the tip of the second cassette holder 154, pressing the large cassette C2 from the front and back to reliably prevent its movement. .

Thereafter, the cassette holder 40 is lowered as shown in FIG. 22(e), and as a result of this lowering operation, the lid 214 of the large cassette C2 shown in FIG. It is installed in the installation position.

In addition, with the insertion of the large cassette C1, the left and right large cassette detection switches 66, 66 provided on the outside of the first door lock member 62 are turned on and detect that the large cassette C2 is installed. As the small cassette detection mechanism 120 is inserted, the switch means 121 of the small cassette detection mechanism 120
, 121 are turned on, the drive motor 161 and the housing motor 51 will not malfunction.

As described above, the present invention provides a method for inserting a small cassette from the second cassette insertion slot on the front of the VTR main body as shown in FIG.
As shown in a), the small cassette is positioned in the insertion direction by coming into contact with a stopper arm that also serves as a discharge arm of a front positioning mechanism suspended from a drive shaft rotated by a shaft rotation mechanism.

When the lid of the small cassette is opened, the drive shaft is rotated in the normal direction, and the stopper arm of the front positioning mechanism is retracted upward (FIG. 1(b)).

On the other hand, when ejecting a small cassette, see Figure 1 (C).
As shown in the figure, the drive shaft is reversed, and the small cassette is pushed out by the stopper arm that also serves as the discharge arm, so that it partially protrudes from the second cassette insertion port.

(Effects of the Invention) As described above, the present invention includes a discharge arm suspended from a drive shaft, and when a small cassette is ejected, the drive shaft is rotated and the discharge arm returns the small cassette to the insertion slot. Therefore, it is possible to eject small cassettes with a simple configuration, and especially when the stopper arm is used as a front positioning mechanism for small cassettes, it is possible to mount a cassette with separate front positioning mechanism and ejecting mechanism. It is much simpler than other devices and can reduce the number of parts.

The ejecting action causes the small cassette to protrude as much as a large cassette, making it easier to handle and making it suitable for front-loading VTRs, where small and large cassettes with different dimensions and lid structures can be selectively installed. It provides equipment.

[Brief explanation of the drawing]

Figures 1 (a) to (c) are explanatory views of the main parts of the cassette loading device according to the present invention, Figure 2 is a plan view of the cassette loading device according to the present invention with the top plate removed, and Figure 3 is the same front view,
Figure 4 is a sectional view of the first and second door parts, Figure 5 is a diagram showing the area around the second cassette insertion opening, Figure 6 is a front view of the first and second doors, and Figure 7 is the same. Plan view, Figure 8 is 8-8 in Figure 6
Line sectional view, Figure 9 is a plan view showing the lower part of the top plate of the cassette holder in Figure 2 (however, Figure 2 is rotated by 180 degrees)
, FIG. 10 is a view taken from arrow 10 in FIG. 9, FIG. 11 is a sectional view taken along the line 11-11 in FIG. 10, and FIG.
2 line sectional view, Figure 13 is a 13-13 line sectional view in Figure 9,
Fig. 14 (a) to (f) are explanatory diagrams of the action of the first door, Fig. 15 (a) to (f) are explanatory diagrams of the action of the second door, 'tS16 (a) to (f) 17 (a) to (d) are operation diagrams of the small cassette glue rad oven, and Figures 18 (a) to (e) are operation diagrams of the cassette holding mechanism for small cassettes. 19
Figures (a) and (b) are diagrams of ejecting a small cassette, Figures 20 (a) to (e) are diagrams of inserting a large cassette, and Figures 21 (a) to (C) are diagrams of the large cassette and rad oven. Figures 22 (a) to (e) are operational views of the cassette holding mechanism for large cassettes, Figure 23 is a perspective view of a standard cassette, Figure 24 is a perspective view of a small cassette, and Figure 25 is a standard cassette. It is a figure which shows the arrangement|positioning relationship when a small cassette and a small cassette are attached. 1... Cassette mounting device, 10... Bracket, 2
0... First cassette insertion port, 30... 342 force set insertion port, 40... Cassette holder, 101... Drive shaft, 111... Stopper arm that also serves as a discharge arm, 160... Drive shaft rotation mechanism, C1...small cassette, C2...large cassette (standard cassette) Patent applicant: Victor Japan Co., Ltd. Agent
Person Patent Attorney 2 1) Part 1 Patent Attorney
Yu Koyama 40...Cassette holder 10]...Drive shaft Ill...Discharge arm/stiff bar arm CI...Small cassette 4 Fig. 19 Fig. 14 Mg1 MC11 Fig. 15 Fig. 21 Fig. 24 Procedure Hosho (self-proposal) November 14, 1990 1, Indication of the case Patent application No. 1990-203163 Name of the invention Cassette loading device 3, Person making the amendment Relationship to the case Patent applicant (432) Victor Company of Japan Co., Ltd. Company 4, Agent 7, Contents of amendment (1) The detailed description of the invention is amended as follows. a) Change the “frame” on page 3, line 2 and line 11 of the specification to “
Corrected to ``housing''. b) "Belt 51" on page 9, line 6 of the specification is replaced with "belt 5".
2”. (ii) "Fig. 1" on page 9, line 18 of the specification is amended to "Fig. 2." E) Amend "not shown" on page 24, line 15 of the specification to "not shown." e) Correct "The first door 21 is open" in the fourth line of page 25 of the specification to "U the first door 21 is closed." In the third line of page 26 of the specification, after "on the other hand," add "provided on both left and right ends of the front surface of the second door 31." G) Correct "inside holder 4o" on page 27, line 17 of the specification to "inside holder 40." (ii) "Detect insertion" on page 29, line 8 of the specification is corrected to "detect insertion." f) [Small cassette detection mechanism 1] on page 29, line 9 of the specification
Add ``no'' next to ``20''. e) “C1” on page 35, line 13 and line 14 of the specification
is corrected to "C2". (2) The drawings shall be amended as follows. As shown in the attached sheet, the reference numeral 151 in FIG. 9 has been corrected to 121. In FIG. 14, the symbol 91 (upper part only) in FIG. 14(e) is corrected to 93, and the symbol 91 (in FIG. 14(f))
(top only). In FIG. 15, the symbol 86° in FIG. 15(f) and the symbol 9
Add a leader line to 1. In FIG. 18, reference numeral 151a is added to FIG. 18(c). Mg1 Figure 15

Claims (1)

[Claims] Large and small cassettes can be selectively inserted from the cassette insertion opening on the front of the main body, the inserted cassette is supported by a cassette holder, and this cassette holder is movably supported by a bracket. In a front-loading type cassette mounting device, a rotatable drive shaft is spanned over the upper part of the cassette holder, and this shaft is capable of swinging in the insertion direction of the small cassette, and a lid of the small cassette is connected to the drive shaft. A discharge arm is attached which abuts the discharge arm, and
A drive shaft rotation mechanism is connected to the drive shaft, and when the lid of the small cassette is opened, the discharge arm is retracted upward, and when the small cassette is ejected, the drive shaft is rotated, and the discharge arm is A cassette mounting device characterized in that a small cassette is pushed out with a button, and a portion of the cassette protrudes from a cassette insertion slot.