JPH0495259A - Cassette loading device - Google Patents

Abstract

PURPOSE:To attain the insertion of plural cassettes of different sizes by forming a lock mechanism with a lock lever attached to a cassette holder and a stopper bar attached to a bracket respectively. CONSTITUTION:An abutting part 203 which is pushed out by a large cassette C2 is attached to a cassette holder 40 together with a lock lever 201 having a lock catch part 204 which oscillates together with the part 203. At the same time, a stopper bar 213 with which the part 204 freely engages is attached to a bracket and also turned by a stopper bar turning means 220. When the cassette C2 is inserted, this cassette C2 pushes out the part 203 and the part 204 is moved out of the bar 213 of the bracket side. Thus the holder 40 is set free. When a small cassette is inserted, a small cassette detection mechanism starts the means 220 to set the holder 40 free. Thus it is possible to prevent the breakage of a front loading type cassette loading device that is caused by the insertion of the cassettes.

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, MI
It is given names such as I format, DI format, and DII 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,
VH3 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 housing 310.
and a take-up reel 312. An opening 313 into which a tape loading member for pulling out the magnetic tape fits is formed on the front side, and an opening 313 is formed on the front side of the magnetic tape (
A lid (front lid) 314 is provided to cover the main body (not shown). Further, 315t is a reference hole for positioning, and 316 is a reference surface for height determination.

FIG. 24 is a perspective view of the small cassette CI, with a supply reel 32 wound with magnetic tape (not shown) inside the housing 320.
1 and a winding wheel 322 are stored therein.

An opening 323 into which a chip loading member for pulling out the magnetic tape fits is formed on the front side, and a lid (front lid) is formed to cover the magnetic tape (not shown) on the front side.
324 is provided. Further, 325 is a reference hole for positioning, 327 is a reference surface for height determination, and 326 is a protrusion for unlocking the lid 324 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. .321 is on the same axis.

In the various cassette loading devices for VTRs and the like mentioned above, the movable cassette holder must be stationary and fixed at a predetermined position at least when inserting the cassette. This is because if the cassette holder is not in the correct insertion standby position, it will be difficult to insert the cassette.

(Problems to be Solved by the Invention) Conventionally, there have been devices in which a gear train such as a worm gear or a reduction gear is interposed between the bracket and the cassette holder, and the cassette holder is mechanically moved by a drive motor. However, if an impact force is applied to the cassette holder by forcefully pushing the cassette, excessive force may be applied to the gear train, resulting in damage to the gears.

As a technique for solving the above-mentioned disadvantages of the gear train system, an automatic mounting device has been proposed, for example, in Japanese Utility Model Application No. 106342/1983. This automatic mounting device has, on both sides of the holder, a locking part that locks to the bracket at one end, and a contact part that engages with a cassette inserted at the bottom of both sides of the deep part of the holder at the other end. A holder that is provided with a rotatable locking piece in the shape of an abbreviation, and the holder can be moved by pressing the abutment part with a cassette inserted to a predetermined insertion position and rotating the locking piece to release the lock. It is characterized by the adoption of a locking mechanism.

However, when a standard cassette is inserted into the holder, the lock can be released by pressing the contact part of the lock piece with the standard cassette, but when a small cassette whose width is narrower than the standard cassette is inserted. , the corresponding contact portion cannot be pressed, that is, the holder cannot be unlocked, and the holder cannot be moved to a predetermined mounting position for recording/reproducing. For this reason, Utility Model No. 62-106342
The automatic loading device of this issue could not be adopted as a front-loading type cassette loading device that can selectively handle standard cassettes and small cassettes.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a front-loading type cassette loading device that can prevent equipment from being damaged due to insertion of a cassette and can also insert cassettes of different sizes.

(Means for Solving the Problems) ゛In order to achieve the above object, the present invention provides a system in which large and small cassettes can be selectively inserted from the cassette insertion opening on the front of the main body, and the inserted cassette is supported by a cassette holder. The cassette holder of a front-loading type cassette mounting device in which the cassette holder is movably supported by a bracket is provided with a lock lever having an abutment portion pushed out by a large cassette and a lock claw portion that swings together with the abutment portion. - is attached to the bracket, and a stopper piece with which the lock claw portion can engage freely is attached to the bracket, and the stopper piece is configured to be rotated by a stopper piece rotation means.

(Function) Until the cassette is inserted into the predetermined position of the cassette holder, the cassette holder is fixed to the bracket by the locking claw part engaging with the stopper piece, and when a large cassette is inserted into the cassette holder, the cassette holder is fixed to the bracket. When the cassette pushes out the abutment part and the locking claw part that swings in relation to the position is removed from the stopper piece on the bracket side, the cassette holder becomes free with respect to the bracket, and the small cassette can be placed in the cassette holder. When the cassette is inserted, the small cassette detection mechanism that detects the insertion of the cassette starts the stopper piece rotation means, which moves the stopper piece to a position where it is removed from the lock claw part. This frees the cassette holder relative to the bracket.

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

For ease of 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 broadly divided into a bracket 10 that constitutes a cassette housing body, a first cassette insertion slot 20 on the front surface of this bracket 1O, a first door 21 and 1 that closes this, and a first door 21. A second cassette insertion slot 30 formed with a cutout and a second door 3 that closes the second cassette insertion slot 30
1, a cassette holder 40 movably arranged within the bracket 10, and a movement mechanism for this cassette holder 40 ("
50 (referred to as "holder moving 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 plate 12 has a lid (front lid) 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 lock 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) (FIG. 10), and its width is 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 mounting 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 a two-pronged fork portion, and this fork portion similarly swings as the main gear Mg swings. On the other hand, bins (not shown) protrude from the left and right sides of the cassette holder 40, and these bins engage with abbreviated guide grooves (not shown) formed on both side plates 11 and 12 of the bracket. . Since the left and right bottles are narrowed so that they can be moved in the longitudinal direction of the hawk through guide grooves, the housing motor 51 of the holder moving mechanism 50 is started, and the hawk is moved to Y in FIG. When tilted in the Y direction, the cassette holder 40
direction and later descend (toward the back of the mouth).

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 main part of the first door locking machine side 60 is a first door locking member 62 that swings around a fulcrum 61 on the front panel 14. As shown in FIG. 20, a locking recess 62a with a claw 64 that can engage with the rear surface of the first door, and a locking recess 62a that is used to push out the claw 64 of the locking recess 62a to the open position. It has a rear tapered portion 65.

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.
6.66 is on and 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 02 is installed at a predetermined mounting position, the first door 21 is closed and locked by the first door lock member 62, but the large cassette C2 installed at this predetermined mounting position Since it is necessary to open the first door 21 when ejecting (extracting), at least the lock is released during this opening operation.

The first door lock release mechanism 70 includes a first door lock release member 72 that is swingably supported on a shaft 71 that is horizontally hooked to the left and right side plates 11 and 12 of the bracket 10 at the rear of the first door 21. The main body of the first door rotor release member 72 has a seesaw shape, and the end opposite to the door (upper part in the figure) is positioned upward and the front side is positioned downward by a spring (not shown). Then, the first
An actuating part 73 having a tapered surface related to the rear tapered part 65 of the door lock member 62 is formed, and has an abutting part 74 on the back side that comes into contact with 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
The lock by the first door locking mechanism 60 is released by pushing out the first door locking member 62 in the opening direction (arrow ■).

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 has a small cassette portion 83 that matches the width of the small cassette C1 and is formed with a notch, and a raised part on the outside thereof. The large cassette volume is defined as the surface 84, and this step is used as the lower guide 34.34 of the small cassette C1 mentioned above.
It is said that

The tip of the second door rotor 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 figure, the second door 31 can be opened.

The second door lock release mechanism 90 for forcibly opening the second door lock mechanism 80 may be any mechanism as long as it pushes down the second door lock member 82, so for example, it may be screwed to the shaft 71 (FIG. 7). By swinging the operating piece 91, 91 (indicated by the arrow ■ in FIG. 8), the pin 86 on the second door locking member 82 side is pushed down, thereby releasing the door.

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 13-13M in FIG. 9.

The small cassette mechanism holding means 100 includes a long drive shaft 101 (attached to the lower surface of the top plate 42 of the cassette holder) shown in FIG. 9, and a first support arm 102 extending downward in the figure. 102.10
2 is fixed to the drive shaft 101), the support shaft 103 is hung on the tips of these, and this support shaft 10
A lock arm 104 is rotatably attached to the drive shaft 101 and extends downward in the figure, while a second support arm 105 is rotatably attached to the drive shaft 101 (in FIG. A lock shaft 1 (which can only rotate clockwise and cannot move further clockwise) is attached and extends downward in the figure, with a lock shaft 1 (
16 is handed over. 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. The tip of the lock arm 104, which corresponds to the bottom side, 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 CI and below the top surface of the large cassette C2.
A major feature of the small cassette mechanism holding means 100 consisting of the above is that the small cassette mechanisms are collectively retracted upward when the large cassette 1-C2 is inserted. In addition,
As shown in the figure, two sets of lock arms 104, 104, etc. are provided on the left and right, but the present invention is not limited to this, and one set 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.
A pair of stopper arms 111.11 are suspended outside the area of the small cassette C1 shown in phantom lines in FIG.
1. The stopper arm ill is rotatably locked to the drive shaft 101 at its base, bent toward the tip, and has a locking portion 1 there shown clearly in FIG.
12, and cannot be rotated clockwise in the figure by a stopper (not shown) (it can only be rotated counterclockwise in the figure; it is always biased clockwise by a torsion spring).

As shown in FIG. 9, the small cassette detection mechanism 120 includes small switch means (for example, a micro limit switch) attached to the sides of the stopper arms 111, 111.
121, 121, and operation bins 122, 122 extending left and right outward from the second support arm 105105, and in FIG. , the small switch means 121, 121 rises and abuts the operating bin 122, 122 waiting upwards, and the small switch means 1
21 and 121 are both turned on. With this, it is detected that the small cassette 01 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. 1O, 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 CI consists of a pair of side guide levers 141 and 141 extending from the drive shaft 101 so as to sandwich the small cassette C1 from the left and right sides, as shown in FIGS. 9 and 10. , is pressed against a stopper (not shown) by a spring (not shown) that urges the cassette in the direction opposite to the cassette insertion direction, and can swing in the cassette insertion direction from the position shown in the figure. The lever 141 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 CI 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 attached to one end of the presser foot 51 (upper side in FIG. 9), and a first cassette presser 153 and a second cassette presser 154 are attached to this presser support shaft 152 (in a V-shape in FIG. 13). Install the base. 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 end of the cassette presser support arm 151 (bottom in FIG. 9) protrude above the top plate 42 of the cassette holder 40, as shown in FIG. Cam part 13 provided in 13
It is in contact with a.

Note that the cassette presser support arms 151, 151 are as follows:
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 biases the presser foot support shaft 152 clockwise, and can be rotated counterclockwise from the position shown in the figure. and large and small cassettes C2 and C1 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 holds 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, in which the drive motor 161 → gear group 16
2→cam gear 163→cam groove 164→rack 165 that moves in the vertical direction in the figure→binion 166→ This mechanism rotates the drive shaft 101 in the forward and reverse directions.

The overall configuration of the cassette mounting device 1 according to the embodiment has been described above, but the present invention is based on the cassette holder side shown in FIGS. It consists of a lock lever, a stopper piece on the bracket side, and a rotating means.The construction of these components will be explained below.

FIG. 1 is an exploded perspective view showing a lock lever and a stopper piece according to the present invention. A lock lever 201 is swingably fixed to the rear portion of the left and right sides of the cassette holder 40 by screws 202. One end (lower end) of this lock lever 201 has an abutting part 203 that comes into contact with the front lower part of the large cassette C2, and the other end has a lock claw part 20.
4 has been established. When the lock lever 201 is pushed by the large cassette C2, it rotates clockwise, and as a result, the lock claw portion 204 is lowered from the figure. In addition, lock lever 201
is constantly biased counterclockwise by a spring (not shown).

On the other hand, a secondary side plate 210 formed by press bending is fixed to the left side plate 11 of the bracket (see FIG. 2) with screws, and a locking member 211 is swingably attached to this secondary side plate 210 via a rotating shaft 212. installed. Note that the locking member 211
The stopper piece 213 has stopper pieces 213 and 214 that project approximately horizontally, and a bent piece 215 that projects approximately downward.
is in a position where it can engage with the lock claw portion 204, as shown by the arrow ■.

Furthermore, a slide plate 2 is installed horizontally in the center of the secondary side plate 210.
The base of the slide plate 216 is connected to a solenoid 218 via a swing lever 217. A cam portion 216a is formed in a notch on the cassette holder 40 side of the slide plate 21&, into which the bent piece 215 fits (arrows ■, ■).

In this example, the solenoid 218, the swing lever 217,
Slide plate 216, cam portion 216a and spring 2
19 constitutes a stopper single rotation means 220.

The assembled state of each structure of FIG. 1 (bl is FIG. 1 fa) is shown.

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 fal to ff+ are explanatory diagrams of the operation of the first door 21, and FIG. 15 fa) to ffl are explanatory diagrams of the operation of the second door 31.

In FIG. 14 (at), when the large cassette C2 is inserted from the first cassette insertion slot 20, both ends of the large cassette C2 are attached to the front tapered portions 6 of the left and right first door lock members 62.
3 (Fig. 7) in the outward direction against a spring (not shown), the first door lock member 62 rotates (arrow ■ in Fig. 7) about the fulcrum 61, and the first door lock member 62 rotates (arrow ■ in Fig. 7), and 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 (bl), the bottom surface of the large cassette C2 pushes the surface 84 of the second door lock member 82, and the second door lock member 82 moves counterclockwise in the figure around the shaft 81. The lock portion 85 of the second door lock member 82 rotates to the state shown in FIG. 14 (C1).
is removed from the second door 31, and the second door 310 is unlocked. As a result, the first door 21 and the second door 31 become rotatable, so they are pushed by the inserted large cassette and open, and the large cassette C2 opens as shown in FIG.
is inserted into the cassette holder 40 (not shown in the figure) shown in FIG.
4(e) and reaches the predetermined mounting position shown in FIG. 14(fl).

When the standard cassette C2 is installed in the predetermined installation position shown in FIG. In order to abut and press, the first door unlocking member 72 rotates around the shaft 71, and thus
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
As shown in FIG. 14 tel and FIG. also rotates clockwise, and the operation piece 91 also rotates clockwise in the figure to lock the second door lock member 8.
Since the second door 3 is held in contact with the second pin 86, the second door 3 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 31.

Furthermore, when the small force cera 1-CI is inserted from the second cassette insertion opening 3o in the state where the first door 21 and the second door 31 shown in FIG. 15(a) are locked, the small cassette C
1 does not engage with the left and right first door lock members 62,
The first door lock member 62 does not operate, and the first 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 see Figure 15fcl.
Since the state shown in FIG. 1 is reached, the lock portion 85 of the second door lock member 82 is disengaged from the second door 31, and the second door 31 is unlocked.

As a result, the first door 21 cannot be rotated and only the second door 31 can be rotated, so only the second door 31 is pushed by the inserted small cassette c1 and opened. The small cassette c1 is inserted into the cassette holder 40 (not shown in the figure) as shown in FIG. 15fdl.

At this time, the left and right second door lock members 82 (FIG. 5) 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 4o by the operation of the holder moving mechanism 50 passes through the 15th tel in FIG.
The predetermined device position shown in FIG.

When the small cassette C1 is installed in the predetermined mounting position shown in FIG. 15('f), the small cassette CI does not come into contact with the first door unlocking member 72 (see FIG. 7).
Therefore, the first door locker release mechanism 70 does not operate, and the first door 21 is held in a locked state by the first door lock member 62. 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 rotor 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 CI 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 CI is ejected. It will not cause any trouble.

Fig. 16 (al to ffl are insertion action diagrams of the small cassette C1, Fig. 17 fa) to (dl are small cassette C
1 Glue rad oven operation diagram, Fig. 18fa1~(el
FIGS. 19A and 19B are diagrams showing the action of the cassette holding mechanism on the small cassette C1, and FIGS.

The small cassette C1 is passed through the second door 31 in FIG.
When the small cassette C1 is inserted into the cassette holder 40 as shown in FIG.

As shown in FIG.
When the first cassette presser 153 is inserted, the first cassette presser
, 153 resists the biasing force of a spring (not shown).
As shown in FIG. 8(c), it rotates slightly counterclockwise, thereby pressing the top surface of the tip of the inserted small cassette C1.

Then, as shown in FIG. 16 [bl], the small cassette 1-
The front end surface of C1 comes into contact with the locking portions 112, 112 of the stopper arms 111, 111, and upon further insertion, the stopper arms 111, 111 rotate slightly counterclockwise in the figure as shown in FIG. Support arm 105°10
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 convex portion 2 for lid lock release protrudes from the side surface of the small cassette C1 using the side guide lever 141 on the center side.
26 to hold the lid 224 in the unlocked state, and open the small cassette C as shown in FIG.
The I glue rad opener mechanism 130 has its opener 132
is located slightly in front of the lid.

Also, at this time, the small switch means 1 of the left and right small cassette detection mechanisms 120 provided on the stopper arms 111.
21 and 121 are both turned on by being pushed by the operation pins 122 and 122, so that each time the small cassette CI is inserted into a predetermined position is detected.

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 a direction to draw in 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 10, but after the second door 31 is removed from the rotation trajectory of the second cassette holder 154, this cam part 13a This causes the first
As shown in Figure 8 (dl), insert the cassette presser support arm 15.
1.151 rotates counterclockwise around the drive shaft 101, and the tip of the second cassette holder 154 presses the rear upper surface of the small cassette C1, pressing the small cassette C1 from the front and back to reliably prevent movement. . .

The rotation of the cassette presser support arm 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 CI, 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. Due to this rotation of the drive shaft 101, as shown in FIG. 16 (dl), when the stopper arm 111.
As shown in Figure 7 (bl), the opener 132 of the small cassette CI glue rad oven mechanism 130
It gets caught on the lid 224 of. Further rotation of the drive shaft 101 causes the stopper arms 111, 111 to rotate through FIG. 16(fe) to FIG. 16(f) so as not to interfere with the operation of the lid oven. As the lid 224 of the small cassette C1 is opened and held in the open state, the lid 224 of the small cassette C1 is opened and held in the open state. , the small cassette C1 has its front and rear upper surfaces connected to the first and second
Since it is pressed by the cassette holders 153 and 154, it will not lift up when the lid oven is operated.

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. Furthermore, the drive motor 161 rotates in the opposite direction by a predetermined amount, and then the stopper arm 111.Ill is rotated clockwise.

As a result, the small cassette C1 is pushed out in the direction of the second cassette insertion port 30 by the stopper arm 111, 111 to the position shown in FIG. , which facilitates the retrieval operation.

The stopper arm 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)).

Figure 20 (al to tel is a diagram showing the insertion action of the large cassette C2, Figure 21 (al to (c) is a diagram showing the large cassette C2 and the lid opener, and Figure 22 fa) 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.
Cassette holder 4 as shown in Figure 1 and Figure 22.
When the large cassette C2 is inserted into the lock arm 1, the top of the tip (lid side) of the large cassette C2 is inserted into the lock arm 1, as shown in Figure 20 fbl.
04, 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 arm 105
．． 1 (15 becomes rotatable.

As a result of further insertion, the front end surface of the large cassette C2 becomes attached to the stopper arm 111, 111, as shown in FIG. 20 fc).
When the stopper arms 111, 111 are pushed by the large cassette C2, they rotate counterclockwise in the figure around the drive shaft 1ull, and the stopper arms 111, 111 are rotated counterclockwise in the figure through the operation bins 122, 122. 2 support arms 105 and 105 to the upper position of the large cassette C2 as shown in FIG.
so that it does not interfere with the insertion operation. and,
It comes into contact with a 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 stack oven mechanism 130 is also pushed upward by the inserted large cassette C2, as shown in FIGS. 21fa) to 21(c), so that it does not interfere with the insertion operation.

Moreover, the inserted large cassette C2 is shown in FIG.
As shown in , the upper surface of the large cassette C2 comes into contact with the first cassette presser 153, 153 and pushes it up.
The front upper surface of the large cassette c2 is pressed by the biasing force of the spring provided in the first cassette presser 153 (however, the load is such that it does not become an excessive load during insertion).

Then, as shown in FIG. 22 (C1), after the small cassette C1 comes into contact with the cut and raised piece 41a of the cassette holder 40, the insertion force causes the cassette holder 40 to open.
When the cassette holder 4o moves slightly, the housing motor 51 is driven to move the cassette holder 4o. By moving the cassette holder 4o, the first door 2 is opened as shown in FIG.
1 deviates from the rotation trajectory of the second cassette holder 154, the operation parts 151a, 151a of the cassette holder support arm 151.151 touch the top plate 13 of the bracket 1o.
The second cassette retainer support arms 151, 151 rotate 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 retainer 154, and the large cassette C2 is released. )C2
Press from the front and back to reliably prevent its movement.

Thereafter, the cassette holder 40 is lowered as shown in FIG. 22, and the lid 214 of the large cassette C2 shown in FIG. 2 is opened by the lid opener member 15 of the large cassette C2 shown in FIG. will be installed on the

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. Switching 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.

The functions of the lock lever and stopper piece of the present invention will be explained in detail with reference to FIG.

Until the cassettes C1 and C2 are inserted into the predetermined positions of the cassette holder 40, the lock claw portion 204 of the lock lever 201 is engaged with the stopper piece 213, as shown in FIG. is bracket 10
is in a fixed state.

As shown in FIG. 1(d), when the large cassette C2 presses the contact portion 203 of the lock lever 201, the lock lever 201
rotates clockwise around the screw 202, and as a result, the lock claw portion 204 comes off the stopper piece 213, and the cassette holder 40 becomes movable.

When the small cassette C1 is inserted into the cassette holder 40, it is detected that the small cassette C1 is inserted into a predetermined position by the small switch means 121, 121 explained in FIG. Rotating means 220 is activated. Then, the slide plate 216 shown in FIG.
a pushes out the bent piece 215, so the stopper piece 213 rises and comes off from the locking claw part 204, as shown in FIG.

Note that the stopper piece rotating means 220 is not limited to the configuration of this embodiment; for example, the stopper piece 213 may be directly swung by the solenoid 218.

(Effects of the Invention) As described above, in the present invention, the locking mechanism is configured by attaching the lock lever to the cassette holder and attaching the stopper piece to the bracket. Even if this happens, the locking mechanism prevents the cassette holder from shifting, and this impact force is not directly transmitted to the stopper half rotation means, so the stopper half rotation means will not be damaged.

Since it is possible to insert a small cassette by interlocking the small switch means and the stopper single rotation means, the present invention provides a front panel that allows insertion of cassettes of different sizes while preventing damage to the equipment due to insertion of the cassette. A loading type cassette mounting device is provided.

[Brief explanation of the drawing]

Fig. 1 fal to fel are explanatory views of the main parts of the cassette mounting device according to the present invention, Fig. 2 is a plan view of the cassette mounting device according to the present invention with the top plate removed, and Fig. 3 is a front view of the same. ,
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
1, 9 is a sectional view, FIG. 9 is a plan view showing the lower part of the top plate of the cassette holder in FIG. 2 (however, FIG. 2 is rotated by 180 degrees), and FIG. Figure 11 is the first
11-11 line sectional view of figure O, figure 12 is line 12 of figure 10
-12 line sectional view, Fig. 13 is a 13-13 line sectional view in Fig. 9, Fig. 14 fal ~ ffl is an explanatory diagram of the operation of the first door, Fig. 15 fal ~ (f) is the second door FIG. 16 fa) to [fl is a diagram of the insertion of a small cassette, FIG. Action diagram of presser mechanism, Fig. 19+
a), lb) are diagrams showing the ejection action of a small cassette, Figures 20 fal to (e) are diagrams showing the insertion action of a large cassette, Figures 21 (a) to (cl) are diagrams showing the large cassette take-up rad oven, and Figure 22 (a) to fe) are operational views of the cassette holding mechanism for a large cassette, FIG. 23 is a perspective view of a standard cassette, FIG. 24 is a perspective view of a small cassette, and
FIG. 5 is a diagram showing the arrangement relationship when a standard cassette and a small cassette are installed. 1... Cassette mounting device, 10... Bracket, 2
0... First cassette insertion port, 30... Second cassette insertion port, 40... Cassette holder, 120... Small cassette detection mechanism, 121... Small switch means, 2
01... Lock lever 1203... Contact part, 204
... Lock claw part, 213 ... Stopper piece, 220.
...Stopper single rotation means, C1...Small cassette, C
2...Large cassette (standard cassette). Patent applicant: Japan Victor Co., Ltd. Agent
Person Patent Attorney Part 2 1) Part 1 Patent Attorney
Yu Koyama (b) Fig. 4 Q1 M9 Fig. 14 Fig. 15 Fig. 16 Fig. 19 Procedure Neho (self-proposal) November 14, 1990 1, Case Indication Patent Application No. 1992-212268 2. Name of the invention Cassette loading device 3. Relationship with the person making the amendment Patent applicant (432) Victor Japan Co., Ltd. 7 Contents of amendment (1) The detailed description of the invention is amended as follows. a) Correct "Reel 211" on page 3, line 18 of the specification to "Reel 311". b) Correct "1 belt 51" on page 11, line 9 of the specification to "belt 52." h) "Figure 1" in the first line of page 12 of the specification is amended to "Figure 2." E) Amend "not shown" in line 9 of page 28 of the specification to "not shown." E) “First door 21 is open” on page 28, line 18 of the specification
is corrected to "the first door 21 is closed". ) On page 29, line 17 of the specification, after “on the other hand,” “second
"provided on both the left and right ends of the front surface of the door 31" is added. G) Correct "within the holder 40" on page 31, line 11 of the specification to "within the holder 40." (ii) "Insertion is detected." on page 33, lines 1 and 2 of the specification is corrected to "insertion is detected." f) [Small cassette detection mechanism 1] on page 33, line 3 of the specification
Add ``no'' next to ``20''. e) Change “C1” on page 39, line 7 and line 8 of the specification 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) has been corrected to 93, and the symbol 91 (in FIG. 14(f))
(top only). In FIG. 15, reference numeral 86 and reference numeral 91 in FIG. 15(f)
Add a leader line to. In FIG. 18, reference numeral 151a is added to FIG. 18(d). No. 14 M91 Fig. 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 the front loading type cassette mounting device, a lock lever for locking the cassette holder is swingably attached to the cassette holder, one end of the lock lever is an abutting part that is pushed out by a large cassette, and the other end is a contact part that is pushed out by a large cassette. A stopper piece whose end is a lock claw part and can be freely engaged with the lock claw part is attached to the bracket, and this stopper piece is configured to be forcibly moved by a stopper piece rotation means, so that the cassette is Until the cassette holder is inserted into a predetermined position, the cassette holder is fixed to the bracket by the locking claw engaging with the stopper piece, and when a large cassette is inserted into the cassette holder, the cassette comes into contact with the cassette holder. By pushing out the cassette holder, the oscillating lock claw part is removed from the stopper piece on the bracket side, and the cassette holder becomes free with respect to the bracket. Also, when a small cassette is inserted into the cassette holder, The small cassette detection mechanism that detects the insertion of the cassette starts the stopper piece rotation means, and the stopper piece rotation means moves the stopper piece to a position where it is disengaged from the locking pawl, thereby removing the cassette. A cassette mounting device characterized in that the holder is free relative to the bracket.