JPH0412536B2 - - Google Patents

Description

TECHNICAL FIELD The present invention relates to a cassette loading mechanism, and more particularly to a cassette loading mechanism in a cassette tape deck equipped with a so-called kangaroo pocket type cassette holder.

BACKGROUND ART Recently, there has been a trend toward miniaturization of component stereos, and various so-called mini component stereos have been developed. It is easy to miniaturize components that mainly consist of electric circuits such as tuners and amplifiers, but it is difficult to miniaturize cassette tape decks that mainly consist of mechanical parts. In particular, in the case of a so-called double cassette deck, which has two decks for dubbing, almost the same mechanism is used for two decks.
Since it requires the same size as a stereo, miniaturization is more difficult, and no one has yet been developed that is small enough to be compatible with a conventional size mini component stereo.

OBJECTS OF THE INVENTION The present invention has been made in view of the above-mentioned points, and it is an object of the present invention to provide a cassette loading mechanism that contributes to the miniaturization of cassette tape decks and also achieves smooth loading and ejecting of cassette halves. purpose.

Structure of the Invention The cassette loading mechanism according to the present invention includes a swingable cassette holder which is provided in a cassette storage section in a deck body so as to be openable and closable and holds a cassette half in a loosely inserted state on its inner surface; a plate-shaped support member that is swingably provided near the cassette storage section and supports a cassette half loaded in the cassette storage section in a fixed position with respect to the tape drive mechanism; and biasing means for biasing the cassette holder in the opening direction, and during the swinging operation of the cassette holder in the closing direction, the support member is swingably supported at an intermediate portion of its entire length, and one end of the support member is swingably supported. The lower end of the cassette half held by the cassette holder is pressed toward the cassette holder at the cassette holder, and a detection switch is attached to the other swinging end of the support member so as to be engageable with the cassette half. It is characterized by the presence of

Embodiments Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

1 to 3, the cassette tape deck 1 according to the present invention has two deck parts 2A and 2.
It is a so-called double cassette deck suitable for dubbing, and includes a main body part 3 including an operation part, a mechanism part, and a control part, and a power supply part 4 connected to the rear part of the main body part 3. It is made up of blocks and has been miniaturized so that it can be used as a so-called mini component stereo in combination with other components such as an amplifier and a tuner. Main body part 3
Four leg receivers 5 are formed on the upper surface of the receiver 5 to fit with the legs of other components to be placed and to prevent misalignment of the components.
Of the two deck sections 2A and 2B, one deck section 2A is only for playback, and the other deck section 2B is capable of recording and playback. Since the playback-only deck section 2A and the recording/playback deck section 2B basically have similar configurations, the deck section 2A will be mainly described in detail below.

The cassette is loaded into a so-called upright kangaroo pocket type cassette holder 7A which holds the cassette half 6 (shown in the third figure) loosely on its inner surface and in an upright position and which can be opened and closed with respect to the cassette storage section. It is done by folding. Cassette holder 7
A is swingably supported by a pivot shaft 8 at the lower end of an arm portion 7a that protrudes forward from the front surface of the holder in the closed state (the state shown in FIG. 5), and is mounted around the pivot shaft 8. There are at least two springs, a first spring 9 having one end engaged with the chassis and the other end engaging the cassette holder 7A, and a second spring 10 having one end engaged with the lower end of the cassette holder 7A and the other end engaged with the chassis. It is always urged in the open direction by the urging means. The two springs 9 and 10 are provided so as to be able to apply a substantially constant biasing force to the cassette holder 7A over its entire swing range. That is, when the cassette holder 7A is in the closed state shown in FIG. Since no moment is applied, the biasing force of the spring 9 mainly acts on the cassette holder 7A during the first half of the swinging of the cassette holder 7A in the opening direction, and the spring 9
In the second half of the swing when the biasing force of the spring 10 weakens, the biasing force of the spring 10 mainly acts on the cassette holder 7A, and the sum of the biasing forces of both springs 9 and 10 remains almost constant over the entire swing range of the cassette holder 7A. It becomes. The same thing can be said when the cassette holder 7A swings in the closing direction. Further, the cassette holder 7A is designed to open gently by the action of a damper (not shown).

In the cassette holder 7A, a bracket 12A is swingably supported on the holder body 11A, and is biased by a spring 16 in the opening direction (clockwise in FIG. 3), and the holder body 11
Swinging is restricted by means (not shown) provided between A and the bracket 12A. This bracket 12A swings together with the holder main body 11A when the cassette holder 7A swings, and its upper protrusion 12
The lock pin 13A installed in the upper chassis 14 locks the cassette holder 7A by engaging with the claw 15A attached to the upper chassis 14. A spacer 60 is attached to the inner surface of the cassette holder 7A, at least at a position facing the cassette half 6 and coming into contact with the lower left end when the cassette holder 7A is opened.

Near the cassette storage section of the main body 3, a cassette holder 7A holds the cassette half 6 loaded in the storage section in a fixed position with respect to a pair of hub drive shafts 17a and 17b forming part of the tape drive mechanism. Decorative board 18 is a plate-shaped support member that supports the
A is pivotally supported in the middle of its entire length, is biased by a spring 19A in the counterclockwise direction in FIG. 3, that is, in the opening direction of the cassette holder 7A, and is located above the pivot point. A portion of the decorative plate 18A contacts the upper chassis 14, thereby restricting its swinging in the biasing direction.
When the decorative plate 18A is in the swing restriction position and the cassette holder 7A holding the cassette half 6 swings in the closing direction, its swinging end 18a comes into contact with the lower end of the cassette half 6, as shown in FIG. By contacting the cassette half 6, the cassette half 6 is made to stand approximately upright within the cassette holder 7A, and then swings together with the cassette holder 7A via the cassette half 6, thereby supporting the cassette half 6 in a fixed position.

A half detection leaf switch 20A for detecting whether or not a cassette half is loaded is fixed to the portion of the decorative plate 18A located above the pivot point, that is, the other end of the swing, and the switch 20A is held in a fixed position. It operates by engaging a loaded cassette half 6. In this way, the support member 1
The support member 8A is swingably supported at an intermediate portion of its entire length, and presses the cassette half 6 at one swinging end thereof, and a leaf switch is provided at the other swinging end of the support member 18A so as to be engageable with the cassette half 6. 20A is installed. According to this configuration, when the support member 18A starts to swing as the cassette holder 7A swings in the closing direction, the actuator of the cassette detection leaf switch 20A is largely retracted from the cassette half 6, and the swinging The actuator approaches the cassette half 6 as it approaches completion. Because of this configuration, even if there are variations in the outer diameter of the cassette half 6, the cassette half will never get caught on the actuator during its swinging, and smooth loading and ejection of the cassette half will be achieved. Ru. A protective plate 21 integrally formed with the decorative plate 18A is located near the leaf switch 20A, and its rising portion 21a prevents the switch 20A from malfunctioning due to mechanical disturbance. Further, an actuator 22A of a chrome tape detection switch (not shown) is pivotably supported and engaged with the upper end of the decorative plate 18A, and this actuator 22A responds to the swinging movement of the decorative plate 18A. When the cassette half 6 is loaded, it swings in conjunction with the cassette half 6, and when the cassette half 6 is loaded, it retreats to a position that does not interfere with the loading.After loading, the claw portion 22a fits into the detection hole of the cassette half 6, thereby operating the detection switch. urge

It is sufficient to provide the above-mentioned two switches in the playback-only deck section 2A, but the recordable deck section 2B is further provided with a leaf switch 23 for preventing accidental erasure and a metal tape detection switch (not shown). It is provided. The leaf switch 23 for preventing erroneous erasure is fixed on the decorative board 18B in the same way as the leaf switch 20B for half detection, and the rising part 21a of the protection board 21 located near the leaf switch 23 prevents malfunctions caused by mechanical disturbances. It is being On the other hand, the metal tape detection switch is activated by fitting the claw portion 24a of the actuator 24, which swings in conjunction with the decorative plate 18B, into the detection hole of the cassette half 6, similar to the chrome tape detection switch. It is structured as follows.

In FIG. 2, a lock arm 26 that is linked to the movement of the head stand 25 is rotatably supported on a mechanical chassis 27, and a lock arm 26 is rotatably supported on a mechanical chassis 27 to lock the cassette holder 7.
It constitutes a lock mechanism that locks A. This lock arm 26 is rotationally biased by a spring 28, so that its engagement piece 26a is always engaged with the head stand 25. When the head stand 25 moves forward (upward in the figure), the spring 28
The cassette holder 7 is rotated counterclockwise in the figure against the urging force of
Lock A in the closed position. According to this, when the head stand 25 is in the forward position, the cassette holder 7A will never open even if there is an erroneous operation, so damage to the head, cassette half, etc. can be prevented.

As a drive mechanism for the head stand 25, for example, a gear having a toothless part and rotationally biased to one side and driven to rotate by meshing with a flywheel gear as appropriate, and a gear fixed to the head stand 25 and driven by the above-mentioned gear. The head stand 2 is moved along the formed cam.
5, and a lever that locks the gear between the stop state and the play state, and each time the lever is activated, the lock of the gear is released, and the gear changes from the stop state to the play state. A well-known configuration may be used in which the head stand 25 is driven by the drive force of the flywheel gear to shift from the play state to the stop state by the rotational urging force applied to itself. As a drive source for activating the lever, a plunger 29 is used, as shown in FIG. 3.

If the plunger 29 is used as a drive source, if the power is cut off due to a power outage or the like in the play state, that is, when the head stand 25 is moving forward, the lever in the drive mechanism described above cannot be activated, and the head stand 25 is moved forward.
5 cannot be retracted, the cassette holder 7A remains locked in the closed state, and the cassette half 6 cannot be ejected. Therefore,
A reset button 30 is provided on the bottom surface of the main body 3 to forcibly release the lock of the cassette holder 7A when it becomes impossible to release the lock due to a power cut or the like (see FIG. 3). The reset button 30 is urged downward in FIG. 3 by means not shown, and when pressed against this urging force, the actuator 29a of the plunger 29 is pushed up. As a result, the lever can be activated in the same way as when the plunger 29 is activated, so the head stand 25 is moved backward, and in conjunction with this, the locked state of the cassette holder 7A by the lock arm 26 is released.

On each front surface of the holder bodies 11A and 11B in the cassette holders 7A and 7B, there is a printed circuit board 31 on which a plurality of light emitting diodes and switches are mounted.
A, 31B are attached to the cassette holders 7A, 7B, and a part of the display section and the operation section are arranged on the cassette holders 7A, 7B. The above operation section has PLAY
Various mode switches such as (playback), REW (rewind), FF (fast forward), and STOP (stop) are provided.
The display section is commonly used by the deck sections 2A and 2B, and displays various information such as power supply, dubbing speed, and recording level. As shown in FIG. 1, holder covers 32A and 32B are attached to the cassette holders 7A and 7B. Operation buttons for the various mode switches described above are attached to these holder covers 32A, 32B.

At the top of the holder covers 32A, 32B and on the right side of the center, there are cassette holders 7A,
7B lock/eject buttons 33A and 33B are arranged. This lock/eject button 33
A, 33B are openings 34A, 3 formed in the holder covers 32A, 32B, as shown in FIG.
4B is integrally molded with the holder covers 32A and 32B from the back side of the cover using resin and has an opening 3.
A pair of claws 35 located at the bottom of 4A and 34B
It is mounted against the elastic force of the parts a and 35b, and after being mounted, it is prevented from coming off by the action of the claws 35a and 35b. Moreover, on both sides of the openings 34A and 34B,
With the holder covers 32A, 32B attached to the cassette holders 7A, 7B, press the lock/eject buttons 33A, 33B on the cassette holders 7A, 7B.
A pair of hook-shaped arms 36a, 36b as biasing means for pressing the brackets 12A, 12B of 7B.
are provided, and these arms 36a, 36b
is the holder cover 3 in the same way as the claws 35a and 35b.
2A and 32B are integrally molded with resin. The lock/eject buttons 33A and 33B are located at the opening 34.
A, holder cover 32A on both lower ends of 34B,
The cassette holders 7A, 7B slide on the slide pieces 37a, 37b integrated with the cassette holders 7A, 32B and are pressed in the closed state of the cassette holders 7A, 7B.
This is an operation button for releasing the lock of the cassette holder 7B to the closed state, and locking the cassette holders 7A and 7B to the closed state when pressed in the open state.

Below the cassette holders 7A and 7B, there is a power operation button 38, timer buttons 39a and 39b, a tape speed adjustment knob 40, and a dubbing speed switch button 4.
1. Dolby NR (noise reduction) button 42,
A recording level adjustment knob 43, a microphone jack 44, a microphone mixing adjustment knob 45, and a tape counter 46 are arranged substantially horizontally in a straight line.

A power switch 47, which is turned on and off by the power operation button 38, is disposed within the power supply section 4 located at the rear of the main body section 3, as shown in FIG. As shown in FIGS. 7a and 7b, a longitudinal lever 48 is provided along the lower chassis between the operating button 38 and the actuator 47a of the power switch 37, and the operating button 38 is connected to the front end 48a of the longitudinal lever 48. . The longitudinal lever 48 has two long holes 48b, 48b.
At the T-shaped guide piece of the chassis (not shown)
The spring 49 engages with the power switch 47 and is slidable linearly, and is biased toward the power switch by the spring 49 with a biasing force smaller than the restoring force of the actuator 47a of the power switch 47. The actuator 47a of the power switch 47 is always in contact with the actuator 47a.
According to this configuration, the main body part 3 and the power supply part 4 can be assembled separately and then combined, making the assembly work very easy.

As is particularly clear from FIG. 8, the timer button 39
a, 39b, a tape speed adjustment knob 40, a dubbing speed selection button 41, and a Dolby NR button 42 are fixed to the front end of the printed circuit board 51 via a bracket 50a, and are connected to the respective actuators of the corresponding switches, and the recording level adjustment knob 43 The microphone mixing adjustment knob 45 is connected to each actuator of a corresponding switch fixed to the front end of the printed circuit board 51 via a bracket 50b. These operation buttons and knobs are inserted into holes formed in a front panel 52 attached to the front surface of the main body 3, and protrude from the front of the panel. The printed circuit board 51 has a notch 51 between the brackets 50a and 50b.
For example, five screws 5 are installed at the rear of the lower chassis 53 at a constant distance from the lower chassis 53.
4, and is fixed at the rear and has a notch 51a, so the front end to which various switches are fixed can be vertically displaced with respect to the chassis by its own elasticity. . The brackets 50a and 50b each have two elongated holes 55a and 55b extending in a direction parallel to the printed circuit board 51.
is drilled. On the other hand, in the vicinity of the holes on the inner surface of the front panel 52, the elongated holes 55a, 5
5b, conical projections 56a that can be fitted into the respective parts;
56b is integrally molded with the panel 52. The long holes 55a, 55b and the protrusions 56a, 56b are as follows:
When the front panel 52 is attached, the operation buttons and knobs are fitted into each other to constitute a positioning means for relative positioning of the respective operation buttons and knobs to the holes of the front panel 52. According to this, even if the printed circuit board 51 is deformed due to aging, for example, the positional relationship between each operation button and knob and the hole in the front panel 52 is always maintained constant, so stable operability can be maintained. become.

In addition, in the above embodiment, one printed circuit board 5
Various switches are fixed on the printed circuit board 51.
Although the printed circuit board 51 is configured to be displaceable with respect to the chassis 53 due to its elasticity, FIGS.
As shown in b, the printed circuit board 51A on the circuit side and the printed circuit boards 51B, 51B on the switch side are separated and electrically connected with flexible cables 57, 57, and the printed circuit boards 51B, 51B are connected to the elongated holes 58, 51B. It is also possible to configure it so that it can be displaced by attaching it to the chassis 53 with stepped screws 59, 59 at 58.

Next, cassette loading/ejecting operations in the cassette tape deck according to the present invention will be explained.

First, the cassette half 6 is set in the cassette holder 7A which is in the open state as shown in FIG. 3, and then the cassette holder 7A is swung in the closing direction by pressing the lock/eject button 33A. When the cassette holder 7A swings slightly, the swinging tip 18a of the decorative plate 18A comes into contact with the lower end of the cassette half 6, as shown in FIG.
As the cassette holder 7A further swings from this state, the cassette half 6 changes from the state shown by the two-dot chain line in FIG. It is made to stand approximately upright within 7A. after that,
The decorative plate 18A swings together with the cassette holder 7A via the cassette half 6, and supports the cassette half 6 in a fixed position relative to the pair of hub drive shafts 17a, 17b (see FIG. 2).

By making the cassette half 6 stand approximately upright within the cassette holder 7A during the swinging process of the cassette holder 7A, the cassette half 6 can be moved around the swinging fulcrum (pivot shaft 8) of the cassette holder 7A in the subsequent swinging operation. Radius of the swing locus at the upper end of 6
As is clear from FIG. 4, R ₁ is slightly smaller than the radius R ₂ of the swing locus of the upper end of the cassette half 6 (indicated by the two-dot chain line) that is not upright.
As a result, the upper end of the cassette half 6 is connected to the claw portion 22 of the actuator 22A of the chrome tape detection switch.
This means that the user can smoothly move to the playback position without getting stuck in a.

Furthermore, the two springs 9 and 10 that bias the cassette holder 7A in the opening direction are provided so that the sum of the biasing forces of both springs is approximately constant over the entire swing range of the cassette holder 7A. The pressing force applied to the cassette holder 7A can be kept constant, and a smooth and stable operating feeling can be obtained.

In the cassette holder 7A, a lock pin 13A provided on the bracket 12A is connected to the upper chassis 14.
It is locked in the closed state by engaging with a claw portion 15A attached to it. In FIG. 2, the claw portion 15A has an arcuate portion 15a at the front end, is rotatably supported by the upper chassis 14, and is urged to rotate clockwise in the figure by a spring 61, and the upper chassis 14 rises. Rotation is restricted by contacting the portion 14a. The locking/unlocking operation by the claw portion 15A will be explained with reference to FIG.
comes into contact with the circular arc portion 15a of the claw portion 15A, and when the lock pin 13A moves further due to the pressing force acting on the lock/eject button 33A of the cassette holder 7A, the claw portion 15A resists the biasing force of the spring 61. It rotates counterclockwise in the figure (b), and then the lock pin 13A engages with the hook portion 15b of the pawl 15A to be in the locked state (c). Unlock (Eject)
Occasionally, when the lock/eject button 33A is pressed again, the lock pin 13A is further advanced from the lock position c, and at the same time the claw portion 15A is pressed against the spring 61.
e slightly rotates clockwise in the figure due to the biasing force of e. When the pressing force of the lock/eject button 33A is released, the lock pin 13A rides on the downwardly inclined portion 15c of the claw portion 15A, and the lock is released.

When locking/unlocking using the claw portion 15A,
As mentioned above, overstroke of the lock pin 13A is necessary, but as explained in FIGS. 2 and 3, the bracket 12A having the lock pin 13A is provided separately from the holder main body 11A, and a spring is inserted between the two. 16 is interposed, so that the holder main body 11A is fixed to the main body 3 when locking/unlocking.
On the other hand, as the bracket 12A swings against the biasing force of the spring 16, the above-mentioned overstroke is obtained. In addition, in the locked state, the holder main body 11A is urged in the direction of the main body 3 with respect to the bracket 12A which is fixed to the main body 3, and as shown in FIG. Since the upper rear surface is pressed against the upper front surface of the front panel 52, it is possible to completely eliminate wobbling of the cassette holder 7A.

FIG. 5 shows the locked state of the cassette holder 7A, and when the cassette half 6 is loaded in the fixed position, the half detection leaf switch 20A attached to the decorative plate 18A is activated, and the cassette half 6 is In addition to detecting that it is loaded,
In the case of a cassette half 6 with a built-in chrome tape, the claw portion 22a of the actuator 22A fits into the detection hole of the cassette half 6, and in conjunction with this, a detection switch is operated to detect that it is a chrome tape.
In addition, the cassette half 6 has a cassette presser spring 62.
It is pressed in the direction of the head (not shown) by A, that is, in the downward direction in the figure.

Next, the ejection operation will be explained. Regarding unlocking the cassette holder 7A, please refer to the
As explained in Figure 0 d, e, f, the lock/
The lock between the lock pin 13A and the claw portion 15A can be easily released by simply pressing the eject button 33A. Then, the cassette holder 7A first begins to swing in the opening direction due to the biasing force of the spring 9 (see FIG. 5). When the cassette holder 7A swings slightly, the lower end of the cassette half 6 is pressed by the decorative plate 18A, and its lower left end (near the corner) is pressed against the inner surface of the cassette holder 7A, as shown in FIGS. 11a and 11b. The cassette half 6 comes into contact with the attached spacer 60, and a slight gap is created between the lower right end of the cassette half 6 and the inner surface of the cassette holder 7A, so the right side of the cassette half 6 is slightly lowered relative to the left side. Claw portion of actuator 22A actuator 22A
The fitted state between the claw portion 22a and the detection hole of the cassette half 6 is released, and the cassette half 6 can be smoothly ejected. This movement of the cassette half 6 is effective when using chrome tape or metal tape. After that, cassette holder 7
A is further swung in the opening direction mainly by the biasing force of the spring 10, and is gently opened by the action of a damper (not shown).

The cassette loading/ejecting operations on the deck section 2A side have been described above, but similar operations are performed on the deck section 2B side as well.

With the above configuration, many operating switches and display elements that were conventionally placed outside the cassette holder can be placed inside the cassette holder, and the locking mechanism of the cassette holder and other mechanisms related to the opening and closing operations of the cassette holder can also be placed inside the cassette holder. etc. could be stored within the frame of the cassette holder, and as is clear from Fig. 12, the size of the cassette tape deck 1 in the horizontal (width) direction was reduced to approximately 2 of the cassette half 6 (indicated by the two-dot chain line). The world's smallest double cassette deck was created. The present invention is not limited to the concept of the conventional mini-component stereo, and can be used not only as a stationary stereo device, but also as a portable stereo device by being integrated with a tuner 70, an amplifier 80, and speakers 90L and 90R, as shown in FIG. Any combination with other components such as a micro cassette deck, digital audio disk player, etc. is possible.

In addition, although the above embodiment describes the case where it is applied to a double cassette deck, the present invention is not limited to application to a double cassette deck, but can also be applied to a deck having a single deck part. It can be downsized to approximately half the size of the double cassette deck shown in Figure 12, making it the world's smallest cassette tape deck compatible with component stereo.

Effects As explained above, in the cassette loading mechanism according to the present invention, the cassette holder that holds the cassette half in a loosely inserted state on its inner surface is oscillated in the closing direction until the oscillation is completed. The lower end of the cassette half is pressed toward the cassette holder by the support member, thereby reducing the radius of the swing locus of the upper end of the cassette half, contributing to miniaturization of the cassette tape deck.

Further, in the cassette loading mechanism according to the present invention, the support member is swingably supported at an intermediate portion of its entire length, and presses the cassette half at one swinging end, and presses the cassette half at the other swinging end of the support member. A detection switch is attached so as to be engageable with the cassette half. According to this configuration, when the support member starts to swing as the cassette holder swings in the closing direction, the actuator of the cassette detection switch is largely retracted from the cassette half, and as the swing is nearing completion, The actuator engages the cassette half 6 in close proximity. Because of this configuration, even if there are variations in the outer diameter of the cassette halves, the cassette halves will never get caught on the actuator during rocking, and loading and ejecting of the cassette halves will be facilitated. There is.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a cassette tape deck according to the present invention, Fig. 2 is a cut away perspective view showing the internal structure of the front part thereof, Fig. 3 is a schematic side view showing the cassette holder in the open state, and Fig. 4 is a Schematic side view showing the state in which the cassette holder is swinging in the closing direction, No. 5
The figure is a schematic side view showing the cassette holder in the closed state, Figure 6 is an exploded perspective view showing the lock/eject button fitting structure, and Figures 7a and b are a plan view and side view of the longitudinal lever in the power switch operating section. figure,
FIG. 8 is an exploded perspective view showing the assembly structure of the operating mechanism;
9a and 9b are a plan view and a sectional view taken along the line B-B of the modified example of FIG. 8, and FIGS. 10a to 10f are schematic plan views for explaining the locking/unlocking operation of the cassette holder. 11a and 11b are schematic side views showing the state of the cassette holder at the start of the opening operation, and schematic plan views showing the movement of the cassette half at that time. FIG. 12 shows the cassette tape deck according to the present invention with other components. FIG. Explanation of symbols of main parts, 2A, 2B...Deck part, 3...Main body part, 4...Power supply part, 6...Cassette half, 7A, 7B...Cassette holder, 1
3A, 13B...Lock pin, 15A, 15B...
... Claw portion, 18A, 18B ... Decorative board, 25 ... Head stand, 29 ... Plunger, 30 ... Reset button, 32A, 32B ... Holder cover, 3
3A, 33B...Lock/Eject button, 47...
...Power switch, 48...Longitudinal lever, 50a,
50b...Bracket, 51...Printed circuit board,
52...Front panel.

Claims (1)

[Claims] 1. A rocking type cassette holder which is provided to be openable and closable with respect to the cassette storage part in the deck body and holds the cassette half in a loosely inserted state on the inner surface thereof, and a rocking type cassette holder which is freely swingable in the vicinity of the cassette storage part. a plate-shaped support member that is provided to support the cassette half loaded in the cassette storage section in a fixed position with respect to the tape drive mechanism; and an urging force that urges the support member in the opening direction of the cassette holder. means, during the swinging operation of the cassette holder in the closing direction, the support member is swingably supported at an intermediate portion of its entire length, and the cassette held by the cassette holder at one swinging end thereof. A cassette loading mechanism characterized in that a lower end of the half is pressed toward the cassette holder, and a detection switch is attached to the other swinging end of the support member so as to be engageable with the cassette half.