JPH0419630B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a small tape cassette adapter used when the small tape cassette is attached to a standard tape cassette magnetic recording and/or reproducing device.

Prior Art The present applicant has previously proposed an adapter for use in attaching a tape cassette smaller than a standard tape cassette to a standard recording/reproducing apparatus. This adapter accommodates a small tape cassette and performs tape loading to form a tape path in the adapter that corresponds to the front tape path of a standard tape cassette. Similarly, it is attached to a recording/reproducing device. The applicant has also proposed an adapter for a small tape cassette that has a built-in motor and operates a tape loading mechanism by the motor, thereby improving operability.

Problems to be Solved by the Invention However, in this small tape cassette adapter with a built-in motor, the tape loading and unloading operations are performed by the motor, but in order to start the tape loading operation, it is necessary to In addition to the operation of closing the opening/closing lid that covers the top surface of the small tape cassette, an operation to start tape loading is required, and the opening/closing lid must be unlocked when removing the small tape cassette from the adapter after the tape unloading operation is completed. Therefore, there was a problem in that the operation knob was not sufficiently operable.

Means for Solving the Problems Therefore, the present invention solves the above problems by eliminating the need for an operation to start tape loading and an operation to unlock the top cover after the tape unloading operation is finished. The object of the present invention is to provide an adapter for a small tape cassette, which has an opening/closing lid 50 that covers the upper surface of a small tape cassette 5 stored therein, and a built-in motor 10.
gears 14 connected to the motor and meshing with each other;
~ 18 and a first loading arm 20 provided with a first tape drawer pole 30 connected via a first connecting member 19 connected to the gear;
A tape loading device comprising a second loading arm 27 connected to the first loading arm through second connecting members 22 to 26 and provided with a second tape drawer pole 31. The mechanism is operated to pull out the tape 32 from the small tape cassette 5 and form a tape path 33 corresponding to the front tape path of the standard tape cassette, which is then used in a magnetic recording and/or reproducing device for the standard tape cassette. The adapter for a small tape cassette includes a first locking portion 71a that engages with the engaging portion 59 of the normal opening/closing lid 50 to lock the opening/closing lid 50 in the closed state, and a first locking portion 71a that is interlocked with the tape loading mechanism. , during the tape loading operation, engages with the engaging portion 59 and locks the opening/closing lid in the closed position, and when the tape unloading operation is about to be completed, the engaging portion 59 is engaged with the engaging portion 59. The second lock part 78a is disengaged, and the first lock part 71a is held in a disengaged position with respect to the engagement part during tape unloading operation, and the second lock part 78a is An opening/closing lid locking mechanism including a third locking portion 73a that releases the holding by disengaging the engaging portion 59 is provided, and the tape loading mechanism is configured to complete the tape loading operation when the tape loading operation is completed. A changeover switch SW5 switches to the tape loading side when the tape reaches the tape unloading operation completion position, and switches to the tape loading side when the tape unloading operation is completed, and a small tape that detects that the small tape cassette is stored. A cassette storage detection switch SW1 and a closed lid detection switch SW2 that detects that the opening/closing negative lid 50 is closed rotate the motor 10 in the forward direction to cause the tape loading mechanism to perform a tape loading operation, The changeover switch SW5
When the changeover switch SW5 is switched to the tape loading side, the drive circuit for tape loading is opened, and the switching switch SW5 is switched to the tape unloading side. A tape unloading start switch SW3, which opens when the first locking member 71a is held in a non-engaging position with respect to the engaging portion 59, is connected in parallel with the tape unloading start switch SW3, and the tape The auxiliary switch SW4 is opened during the tape unloading operation of the loading mechanism, and the motor 10 is reversed to cause the tape loading mechanism to perform the tape unloading operation, and the tape unloading start switch SW3 is opened. A motor drive circuit forming a drive circuit for tape unloading, which is kept closed by the auxiliary switch SW4 even when the tape is unloaded, and is opened by switching the switch SW5 to the tape loading side. 110 is provided.

Embodiment FIG. 1 shows an embodiment of the small tape cassette adapter 1 according to the present invention with the top plate removed. This adapter 1 consists of an adapter housing 2 and a front lid 3, has substantially the same external dimensions as a standard tape cassette, and has a small tape cassette storage section 4, a motor 10, etc. inside. FIG. 2 shows a small tape cassette 5 stored in the storage section 4. As shown in FIG. This small tape cassette 5 is a tape cassette smaller than a standard tape cassette, and includes a cassette housing 6 that stores a magnetic tape, and a cassette housing 6 provided on the front side of the cassette housing 6, which is normally closed and protects the magnetic tape inside. It consists of a lid 7.

First, the tape loading and unloading operations within the adapter 1 will be described.

The adapter 1 is configured such that a built-in motor 10 performs tape loading and unloading operations within the adapter. That is, when the motor 10 rotates forward as shown in FIG.
4, 15, 16, 17 to the gear 18a of the gear structure 18, which reduces the speed of the gear structure 1.
8 rotates clockwise. As shown in FIG. 4, the gear structure 18 includes, in order from the top, a manual operation section 18b, a pole lock cam 18c, and a gear 18.
a, the switch switching cam 18d and the arm 18c are coaxially and integrally formed, and the manual operation part 18b is connected to the opening 2a of the top plate 2a of the adapter housing 2.
− ₁ and faces the top surface of the adapter housing 2.

By rotating the gear structure 18, especially the arm 18e, the special chain 19 as a first connecting member is
is wound up, and the first loading arm 20 rotates clockwise about the shaft 21 to the position shown by the two-dot chain line. This rotation of the arm 20 is transmitted to the second loading arm 27 via the bell crank lever 22, links 23, 24, bell crank lever 25, and link 26, and this is transmitted counterclockwise with respect to the axis 28 as shown in chain double-dashed lines. Rotate to the position shown. Here, the link 24 has the shape shown in FIG. 5, and is connected to the link 23 by a coil spring 29, and the links 23 and 24 move substantially integrally in the direction of arrow _X1 . Further, the link 26 moves in the direction of arrow _X2 .

Bell crank lever 22, links 23, 24,
The bell crank lever 25 and the link 26 are the second
constitutes a connecting member.

As the first loading arm 20 rotates, the first tape pulling pole 30 pulls out the magnetic tape 32 from the small tape cassette 5 stored in the storage section 4, and the second loading arm 2
7, the second tape drawer pole 3
1 similarly pulls out the magnetic tape 32, tape loading is performed within the adapter, and a tape path 33 corresponding to the front side tape path of the standard tape cassette is formed.

Still, due to the rotation of the gear structure 18, the working pole 30 of the cam 18c is locked, as will be described later, and the switch SW5 is switched by the action of the cam 18d.

Further, as shown in FIG. 3, a friction clutch 34 is provided between the gears 14 and 15.
Furthermore, as shown in FIG. 6, the rotation of the gear 15 meshes with the gears around the flange of the take-up reel of the small tape cassette 30 via the gears 35, 36, 37 and the reel structure gear 38. The signal is about to be transmitted to the reel drive gear 39 which is currently in operation. However, at this time, since the one-way clutch 40 of a well-known structure between the gears 36 and 37 operates in the relief direction, rotation is not transmitted to the reel structure gear 38 and the reel structure gear 38 and the reel drive gear 39
does not rotate.

Further, when the motor 10 reverses, the gear structure 18 rotates counterclockwise via the above-mentioned gears, the loading arm 20 rotates counterclockwise and comes into contact with the stopper pin 41, and furthermore, each link The loading arm 27 rotates clockwise and comes into contact with the stopper pin 42. Furthermore, the one-way clutch 40 operates to transmit rotation;
The reel drive gear 39 rotates, and the take-up reel inside the small tape cassette 5 rotates in the tape winding direction. As a result, the tape 32 forming the tape path 33 is wound and stored in the small tape cassette 5, and tape unloading is performed.

Next, the configuration and operation of each part of the adapter 5 will be explained separately.

Opening/closing lid mechanism (FIGS. 7, 8, and 9) The opening/closing lid 50 is normally closed as shown in FIGS. 1 and 7, and covers the top surface of the storage section 4. . The opening/closing lid 50 is configured to be opened as shown in FIGS. 8 and 9.

Engaging portion 59, first lock portion 71a, second lock portion 78a, and third lock portion 73a
However, the opening/closing lid 50 is locked in the normal closed position, and the opening/closing lid 50 remains locked in the closed position even during tape unloading operation, and even during the initial and middle tape unloading operations.
An opening/closing lid locking mechanism is configured which locks the opening lid 50 in the closed lid position and unlocks the opening/closing lid for the first time when the tape unloading operation is about to be completed.

The opening/closing lid 50 has arm parts 51 and 5 on the left and right sides of the front edge.
2 are supported by pins 53 and 54, respectively, and are biased in the lid opening direction by a torsion coil spring 55 provided on the pin 53. Further, a chevron-shaped protrusion 56 is formed in a portion of the opening/closing lid 50 that is pivotally supported by the pin 53.
Furthermore, the leaf spring 57 is connected to the above-mentioned chevron-shaped protrusion 56.
It is planted on the vertical wall 58 inside the adapter housing 2 in a state where it is pressed.

The opening/closing lid cover 50 is normally locked in the closed lid position by a lock plate 71 whose rear engagement 59 will be described later.

When the lock plate 71 is disengaged from the engaging portion 59, the lock is released and the opening/closing lid 50 is rotated clockwise (in the direction of opening the lid) mainly by the spring force of the torsion coil spring 55 and automatically shown in FIG. state, that is, one inclined surface 56a of the chevron-shaped protrusion 56 is connected to the plate spring 5.
Open the lid at an angle α until it reaches the position shown in line 7. Opening/closing lid 5
In order for 0 to further rotate in the direction of opening the lid, the top 56b of the chevron-shaped protrusion 56 must push away the leaf spring 57, and the spring force of the torsion coil spring 55 is also insufficient to push the leaf spring 57 away. , the opening/closing lid 50 is elastically held in the above-mentioned opening position. Note that the above angle α is
This is determined by the inclination angle of the inclined surface 56a, etc., and is set to an angle at which an opening 60 having a necessary width to accommodate a fingertip is formed, for example, about 15 degrees.

If the opening/closing lid 50 is to be opened further than in the above state, the opening/closing lid 50 is opened manually. When opening the lid manually, the opening/closing lid 50 is slightly opened as described above, so that the fingertips are surely caught behind the top cover 50, and the closing operation becomes easy. The opening/closing lid 50 is opened to a vertical position as shown in FIG.
It is kept in this state by contacting with.

In this state, the small tape cassette 5 is stored in the storage section 4 or taken out from the storage section 4. In particular, the small tape cassette 5 is stored with the lid 7 closed, and when the lid 7 is closed, the lid 7 is locked by the locking part 61 of the lid 50 and opened to a horizontal position. Covered.

The closing operation of the opening/closing lid 50 is performed manually, and the opening/closing lid 50 is automatically locked in the closed position.

In this case, the opening/closing lid 50 does not rotate all at once to the upright position when the lock is released, but only rotates a little until it becomes easier to manually open the lid, and then moves vigorously to the upright position. Inconveniences that may occur if the arm rotates, that is, the arm 5
1 and 52 collide with the vertical wall 58, etc., and the bases of the arms 51 and 52 are likely to be damaged, and the operator is not injured unexpectedly. Furthermore, the so-called incomplete opening operation of the opening/closing lid 50 is effective when taking out a small tape cassette from the adapter after the tape unloading operation. That is, the lock of the opening/closing lid 50 is released during the tape unloading operation as described later, but before taking out the small tape cassette 5 from the storage section 4, the opening/closing lid 50 must be fully opened as shown in FIG. Manual operation is required to close the lid,
The tape unloading operation is completed during this manual operation. For this reason, the small tape cassette 5
The tape cassette 5 is always taken out after the tape unloading operation in the adapter 1 has been completed to the end, and there is no malfunction in which the small tape cassette 5 is taken out from the storage part 4 in the middle of the unloading operation. From another perspective, this means that the timing for unlocking the opening/closing lid 50 can be set to a stage before the completion of the tape unloading operation, and the strictness of the timing can be relaxed, which is convenient in terms of design.

Operation knob and related mechanism (FIGS. 10A and B, FIG. 11, FIGS. 12A and B, FIGS. 13A and B, and FIG. 14) The adapter 1 is provided with a negative operation knob 70. This operation knob 70 has the following functions, as will be described later.
The opening/closing lid 50 is slid in the direction of arrow _X1 when opening the lid and starting the unloading operation.

10A and 10B show the state of the mechanism for locking the operation knob when the opening/closing lid 50 is closed, FIG. 11 shows the state of the mechanism for locking the operation knob when the related lid 50 is open, and FIGS. FIGS. 13A and 13B show the state before the loading operation is completed, and the state when the unloading operation is performed. For convenience of illustration, the operating knob 70 and the lock plate 71 are shown with dashed lines, and are shown in FIGS. 10A and 12.
The operation knob 70 is omitted in FIG. A and FIG. 13A. As also shown in FIG.
1 and can slide in the directions of arrows X ₁ and X ₂ along the elongated holes of the top plate 2 a of the adapter housing 2 . Normally, as shown in FIGS. 10A and 10B, the sliding knob 70 is in a position moved together with the lock plate 71 in the direction of the arrow by the action of the coil spring 72, and the first lock portion 71a of the lock plate 71 is engaged. The joint portion 59 is locked. As a result, the opening/closing lid 50 is latched by the locking plate 71 and locked in the closed lid position.

A lock member 73 is provided in connection with the lock plate 71, and a detection member 74 is provided in connection with the opening/closing lid 50. The lock member 73 is movable in the directions of arrows Z ₁ and Z ₂ while being guided by a groove, and the third lock portion 73 a at the upper end has the function of locking the lock plate 71 as shown in FIG. 13B. do. The detection member 74 is supported by a shaft 75, and has a detection arm 74a facing the lower surface of the engagement portion 59 of the closed lid 50. The detection member 74 and the lock member 73 are connected by a link 76.
That is, one end of the link 76 is supported by the shaft 75 and fitted into the recess 74b of the detection member 74, and the other end is supported by the shaft 73 on the side surface of the locking member 73.
It is connected to b.

For the detection member 74 and the link 76, the first
The spring 77 having the shape shown in FIG. 4 is shown in FIGS.
It is hung as shown. Torsion coil spring part 7
7a and 77b are fitted onto the shaft 75, and the intermediate U-shaped portion 77c locks the lower side of the detection arm 74a, and the arm portions 77d and 77e at both ends engage the inner wall of the adapter housing 2 and the lower side of the detection arm 74a, respectively. It is latched onto the lower surface of the link 76. One torsion coil spring portion 77b
biases link 76 counterclockwise, link 7
6 and the detection member 74 are elastically integrated in the state shown in FIG. On the other hand, the torsion coil spring portion 77a urges the detection member 74 clockwise, that is, in the direction in which the detection arm 74a is displaced in the direction of arrow _Z1 .

Additionally, a pivot lock member 78 is provided in conjunction with the top cover 50. This rotating lock member 78 is pivotally supported on a vertical shaft 79, with an upper second lock portion 78a and a lower portion connecting arm 78b.
has. The connecting arm 78b engages with the pin 80 (see FIG. 5) on the link 24, and the link 24
The rotation lock member 78 rotates in accordance with the displacement of the link 24.

In the initial state of adapter 1, FIG. 10A,
As shown in FIG. B, the engaging part 59 of the opening/closing lid 50 is locked in the closing position by being locked by the first locking part 71a of the locking plate 71 in the closed position. The detection member 74 is rotated counterclockwise as the detection arm 74a is pushed by the engaging portion 59, and the rotation lock member 78 is rotated counterclockwise and the detection arm 74a is pushed by the engagement portion 59, and the rotation lock member 78 is rotated counterclockwise. 78a is disengaged from the engaging portion 59.

When the operation knob 70 is slid in the direction of arrow _X1 (this is the operation to open the opening/closing lid 50),
The first lock portion 71a of the lock plate 71 is disengaged from the engaging portion 59, and the opening/closing lid 50 is unlocked and automatically opens as shown in FIG.

When the opening/closing lid 50 is opened, the detection member 74 is rotated clockwise by the spring force of the torsion coil spring 77a to a position where it is stopped by the stopper 81, as shown in FIG. During this rotation, link 7
6 is integrated with the detection member 74, the link 76 also rotates clockwise, and the locking member 73 is displaced in the direction of arrow _Z2 to reach the unlocked position. As a result, the operation knob 70 is not locked and returns to its original position by the spring 72 when the operation is released.

When the small tape cassette 5 is stored in the storage section 4, the opening/closing lid 50 is closed, and the tape loading operation is performed in the adapter 1, the mechanism related to the operation knob 70 is in the state shown in FIGS. 12A and 12B. becomes. That is, in the state shown in FIGS. 10A and 10B, the rotating lock member 78 is rotated clockwise, and the second locking portion 78a locks the engaging portion 59. As a result, the opening/closing lid 50 becomes doubly locked by the first locking portion 17a and the second locking portion 78a. Further, the detection member 74 and the link 76 are in a slightly bent state compared to the integrated state shown in FIG.
6 is biased counterclockwise, and the locking member 73 is biased in the direction of arrow _Z2 , that is, in the direction of locking operation, and is brought into contact with the lower surface of the locking plate 74.

In this state, move the operation knob 70 using the arrows as above.
When it is slid in the _X1 direction (this is the unloading start operation), the mechanism related to the operating knob 70 is in the state shown in FIGS. 13A and 13B. That is, the operating knob 70 is locked at the operating position by locking the cutout end surface 71b of the locking plate 71 with the third locking portion 73a of the locking member 73. Although the lid 50 is unlocked by the lock plate 71, it remains open because it is locked by the lock arm 78a.
In other words, the opening/closing lid 50 is
When the tape unloading operation is substantially completed and the lock by the lock arm 78a is released, as will be described later, the lid can be opened automatically. Further, when the opening/closing lid 50 is opened, the detection section 74, the link 76, and the locking section 73 are in the state shown in FIG. 11, and the operating knob 70 is unlocked and returns to its original position.

The portions where the engaging portion 59 and the locking plate 71 face each other are inclined surfaces in the same direction, as shown in FIG. 10B. Due to the action of these inclined surfaces, the operation knob 7 can be opened by simply closing the opening/closing lid 50.
The lid is locked in the closed position without any operation.

Motor Drive Circuit (FIG. 15) The adapter 1 incorporates a motor drive circuit 110 shown in FIG. 15 including switches SW1/SW5. In Figures 1 and 15, SW1
1 is a small tape cassette storage detection switch, and when the small tape cassette 5 is stored in the storage section 4, it is pushed by a lever 111 to close the switch. SW2 is an open/close lid/close detection switch;
The opening/closing lid 50 is closed.
SW3 is a tape unloading start switch, and when the operating knob 70 is slid in the direction of _arrow
It is pushed by a lock plate 71 integrated with 0 and closed. SW4 is an auxiliary switch for switch SW3, and is closed when loading arm 20 starts rotating counterclockwise from the tape pull-out position shown by the two-dot chain line in FIG. Note that this auxiliary switch SW4 is connected in parallel with the above-mentioned switch SW3, and as described later, even if it is closed after tape loading starts and switch SW3 is opened just before tape unloading is completed, the motor drive circuit will not be activated. It is intended to remain closed. Specifically, it is normally closed, and when the loading arm 20 rotates counterclockwise, the locking by the arm 20 is released and the opening is closed.
SW5 is a tape loading/unloading completion detection switch, which is switched by the switch switching cam 18d as shown by the solid line in FIG. 22 when tape unloading is completed. 112 is a battery for driving the motor 19, and as shown in FIG.
loaded inside.

Next, the operations and operations when using the adapter 1 will be generally explained.

(1) First, operate the operation knob 70 in the direction of arrow _X1 .

By this operation, the opening/closing lid 50 is opened as shown in FIG.

(2) Manually rotate the opening/closing lid 50 to the vertical position shown in FIG.
Store it inside and close 50.

As a result, as shown in FIG. 1, both the small tape cassette storage detection lever 111 and the opening/closing lid closing detection lever 113 rotate clockwise, and the double lock on the link 24 is released. Also, switches SW1 and SW2 are closed,
The motor 10 is started and rotates forward, and the tape loading operation is performed within the adapter 1 as described above, and the tape path 33 is formed. Paul 3
0 is locked in the tape extraction position. Further, in accordance with the displacement of the link 26 in the above operation, the adapter erroneous insertion prevention piece 114 is buried in the adapter housing 2, and the adapter 1 becomes ready to be attached to the magnetic recording/reproducing device. Note that the operation knob 70 and its related mechanisms are in the state shown in FIGS. 12A and 12B.

When the adapter 1 is installed in the device, the tape is pulled out from the adapter, and signals are recorded on the tape running along the tape path outside the adapter 1, or signals recorded on the tape are reproduced. When the stop operation is performed, a tape unloading operation is performed within the device, and the tape is returned to the adapter.Then, when the eject operation is performed, the operation knob 70 of the adapter 1 is moved as shown in the arrow.
X Operate in _one direction.

With this operation, the operating knob 70 is
As shown in B, it is locked in the operating position and the switch SW3 is closed. When the switch SW3 is closed, the motor 10 starts and rotates in reverse, the pole 30 is unlocked, and the tape unloading operation is performed. When the tape unloading operation reaches its final stage, the second lock portion 78a is disengaged from the engaging portion 59, and the opening/closing lid 50 is unlocked and opened as shown in FIG. When the opening/closing lid 50 is opened, the lock on the operating knob 70 is released and the operating knob 70 returns to its original position. When the opening/closing lid 50 is opened and the operation knob 70 is returned, switches SW2 and SW are opened.
3 is developed. However, at this point the switch
Since SW4 is closed, the motor 10 continues to rotate in reverse without stopping, and no manual auxiliary operation is required to complete the tape unloading operation. When the tape unloading operation is completed, the switch SW5 is switched by the cam 18d, and the motor 10
stops.

(4) After that, open and close the opening/closing lid 50 to the vertical position shown in FIG.
Take it out.

As described above, a series of operations of loading the tape stored in the small tape cassette, unloading the tape, and taking out the small tape cassette have been performed.

Effects As described above, according to the small tape cassette adapter of the present invention, when the opening/closing lid covering the top surface of the small tape cassette is closed while the small tape cassette is stored, the tape loading operation is automatically started. Therefore, there is no need to specially operate a knob etc. to start the tape loading operation, and the opening/closing lid is already unlocked when the tape unloading operation is finished, so it is easy to connect the small tape cassette to the adapter. There is no need to perform the above-mentioned unlocking operation every time the tape is unloaded.In other words, the small tape cassette can be taken out without operating a knob or the like after tape unloading, and the opening/closing lid is unlocked. Since the tape unloading operation is carried out until the final state, there is no need for an operation to assist the tape unloading operation after the lock is released, and the present invention has the advantage that operability can be improved.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of a small tape cassette adapter according to the present invention with the top plate removed; FIG. 2 is a perspective view of an example of a small tape cassette housed in the adapter of FIG. 1; FIG. 3 is a sectional view taken along the line - - in FIG. 1 showing the structure of the gear train of the tape loading mechanism drive system, and FIG. 4 is a perspective view showing the gear structure taken out from FIGS. 1 and 3. , FIG. 5 is a diagram showing the links in FIG. 1, FIG. 6 is a sectional view taken along the line - - in FIG. 1, showing the structure of the gear train of the reel drive system, and FIGS.
Figure 9 shows the state in which the opening/closing lid of the adapter is closed, the state in which the lid is automatically slightly opened and held in that position, and the state in which it is opened to the vertical position and held in that position. Figures 10A and 10B are respectively a plan view and an elevation view schematically showing the state when the opening/closing lid is closed with the adapter of the operation knob related mechanism empty, and Figure 11 is a diagram showing the opening/closing lid closed. Figures 12A and 12B are elevational views showing the state of the operation knob-related mechanism when opened, and show the state when a small tape cassette is stored in the adapter, the opening/closing lid is closed, and a loading operation is performed inside the adapter. FIGS. 13A and 13B are a plan view and an elevation view showing the state of the operating knob-related mechanism, respectively. FIG. 14 is a plan view and an elevation view showing the state of the operating knob-related mechanism when the unloading start operation is performed. FIG. 15 is a perspective view showing the shape of the spring assembled to the operating knob-related mechanism, FIG. 15 is a view showing the motor drive circuit inside the adapter, and FIG. 16 is a view of the integrated knob and lock plate viewed from below. . 1...Adapter for small tape cassette, 2...
Adapter housing, 2a...Top plate, 2a- ₁ ...Opening,
3... Front lid, 4... Small tape cassette storage section, 5... Small tape cassette, 6... Cassette housing, 7... Lid, 10... Motor, 11... Worm, 12... Worm wheel, 13-17,
18a, 35-37...gear, 18...gear structure, 18b...manual operation section, 18b- ₁ ...cut groove,
18b- ₂ ...triangular part, 18c...pole lock arm, 18d...switch switching cam, 18
e... Arm, 19... Special chain (first connection member), 20... First loading arm,
27...Second loading arm, 21,2
8, 75, 79, 95... shaft, 22, 25... bell crank lever, 23, 24, 26, 67...
Link, 29... Spring, 30... First tape drawer pole, 31... Second tape drawer pole, 32... Magnetic tape, 33... Tape path, 34... Friction clutch, 38... Reel structure gear, 39... Reel drive gear, 40... One-way clutch, 41, 42... Stopper pin, 50...
Opening/closing lid, 51, 52... Arm portion, 53, 54... Pin, 55... Torsion coil spring, 56... Mountain-shaped protrusion, 56a... Inclined surface, 56b... Top, 57...
...Plate spring, 58 ... Vertical wall, 59 ... Engagement part, 6
0... Opening, 61... Locking part, 70... Operation knob, 71... Lock plate, 71a... First lock part, 71b... Notch end surface, 72... Coil spring,
73...Lock member, 73a...Third lock part, 73b...Shaft part, 74...Detection member, 74a
...Detection arm, 77...Spring, 77a, 77b...
Torsion coil spring part, 77c... intermediate U-shaped part, 7
7d, 77e...arm portion, 78...rotation lock member, 78a...continuous arm, 79...shaft, 80...
... Pin, 81 ... Stopper, 110 ... Motor drive circuit, 111 ... Small tape cassette storage lever, 112 ... Battery, 113 ... Open/close lid close detection lever, 114 ... Adapter incorrect insertion prevention piece, SW
1...Small tape cassette storage detection switch,
SW2...Open/close lid close detection switch, SW3...
Tape unloading start switch, SW4...
...Auxiliary switch, SW5... Tape loading/unloading completion detection switch.

Claims (1)

[Claims] 1. It has an opening/closing lid 50 that covers the upper surface of the small tape cassette 5 stored therein, and a built-in motor 1.
gear 1 connected to the motor by 0 and meshing with each other;
4 to 18 and a first connecting member 19 that connects with the gears.
a first loading arm 20 provided with a first tape drawer pole 30 connected via a first tape drawer pole 30;
and a second loading arm connected to the first loading arm.
The tape is loaded from the small tape cassette 5 by operating a tape loading mechanism comprising a second loading arm 27 provided with a second tape drawer pole 31 connected to each other via connecting members 22 to 26. 32 is pulled out to form a tape path 33 corresponding to the front side tape path of a standard tape cassette, and is used in a magnetic recording and/or reproducing device for a standard tape cassette. 50 to lock the opening/closing lid 50 in the closed state; A second lock portion 78a is engaged with the opening/closing lid and locked in the closed lid position, and is disengaged from the engaging portion 59 when the tape unloading operation is about to be completed. When the tape unloading operation is performed, the first locking part 71a is held in a non-engaging position with respect to the engaging part, and the second locking member 78a is disengaged from the engaging part 59. An opening/closing lid locking mechanism is provided, which includes a third locking portion 73a that releases the holding when the tape loading mechanism reaches the tape loading operation completion position, and switches to the tape loading side when the tape loading mechanism reaches the tape loading operation completion position. , a changeover switch SW5 that switches to the tape loading side when the tape unloading operation is completed, a small tape cassette storage detection switch SW1 that detects that the small tape cassette 5 is stored, and the opening/closing lid 50. The closed lid detection switch SW2 detects that the lid is closed, and the motor 10 is rotated in the forward direction to cause the tape loading mechanism to perform a tape loading operation, and the changeover switch SW5 is switched to the tape unloading side. The switching switch SW5, which forms a drive circuit for tape loading and is switched to the tape unloading side, and the first locking member 71a is connected to the switching switch SW5 when the tape unloading operation is started. A tape unloading start switch SW3 that closes when held in a disengaged position with respect to the joint portion 59, and a tape unloading operation of the tape loading mechanism connected in parallel with the tape unloading start switch SW3. The motor 10 is rotated in reverse to perform the loading operation, and even when the tape unloading start switch SW3 is opened, the circuit remains closed by the auxiliary switch SW4, and the switching operation is continued. An adapter for a small tape cassette, characterized in that it is provided with a motor drive circuit 110 forming a drive circuit for tape unloading which is opened when a switch SW5 is switched to the tape loading side.