JPS6034113Y2 - tape recorder - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a tape recorder, and particularly to a tape recorder that can prevent erroneous operation of record operating members during recording and playback.

Generally, in a tape recorder, it is necessary to lock the record operating member by some means in order to prevent the record operating member from malfunctioning during recording (Rec) and maintain the recording state.

Further, during playback, the recording state may be set inadvertently at some time, and in any case, it is necessary to securely lock the record operating member.

For this reason, conventional tape recorders have a series of modes (Play, Rec, 5top, FF, Re
A so-called push button unit in which switching operation members such as v) are configured into one unit is applied, or a mechanism is used in which each operation member is independently attached to a chassis and associated with each other.

However, the push-button unit is structurally bulky and restricts the degree of freedom in designing other components, so it has the disadvantage that it cannot be used except in relatively large tape recorders.

Furthermore, although the locking mechanism for the independent operating member can be formed to be structurally small and suitable for small tape recorders, it is structurally complex, tends to be expensive, and has the disadvantage of lacking reliability. There is.

The object of this invention is to provide a tape recorder which eliminates the drawbacks of the prior art and sets recording and playback conditions by moving a movable chassis on which reels, capstans, etc. are installed, such as the Stahl system.

Embodiments of this invention will be described in detail below with reference to the drawings.

In FIG. 1, a movable chassis 12 of a tape recorder 10 is shown.
is placed in a lower parking position by a mooring mechanism (not shown).

Here, the movable chassis 12 on which the capstan 14 and reel shafts 15 and 16 are set is attached to the fixed chassis 20 by a pair of rotation pins 17 and 18.

On this fixed chassis 20, a pinch roller 22, a recording
A reproducing head 24 and an erasing head 26 are installed.

Since the movable chassis 12 is biased upward by the compression coil spring 27, it can be moved upward by pressing, for example, with a cassette tape (not shown), an unmooring knob (not shown) that releases the mooring at the stop position. , second
You can set the state in which recording and playback are possible as shown in the figure.

As shown in FIGS. 1 to 3, particularly FIG. 3, the erasing head 26 on the stationary chassis 20 is fixed to a support arm 28, which is screwed to a head mounting plate 30.

The head mounting plate 30 is rotatably attached to the fixed chassis 20 by a pivot pin 32.

Further, a torsion spring 34 is wound around the pivot pin 32 to bias the head mounting plate 30 toward the stopper 36.

A record operating member 38 is slidably attached to the fixed chassis 20.

As can be clearly seen from Fig. 3, this record operating member 3
8 has long grooves 42 and 43 on the top and side surfaces, into which pins 40 and 41 fixed to the fixed chassis 20 are loosely fitted and snapped together.

In addition, the record operating member 38 is moved in a direction away from the fixed chassis 20 by a tension coil spring 48 stretched between a pin 46 fixed to a support piece 44 protruding from the fixed chassis 20 and the record operating member 38 It is biased towards the front (front).

Furthermore, a notch 50 is formed on the upper surface of the record operating member 38, and the supporting arm 28 of the erasing head 26 is connected to the head mounting plate 3.
The lower end of the screw 52 that screws into the hole extends into this notch.

Therefore, when the record operating member 38 slides forward and protrudes by the tension spring 48 until the pins 4G, 41 come into contact with the rear sides of the long grooves 42, 43, the edge of the notch 50 presses the screw 52.

Therefore, the head mounting plate 30 is rotated around the rotation pin 32 in a direction away from the stopper 36 against the biasing force of the torsion spring 34.

In this state, the erasing head 26 retreats to a position away from the tape running path and does not come into contact with the tape.

Further, a notch 54 is formed on the side surface of the record operating member 38 to allow the movable chassis 12 to descend.

As shown in FIGS. 1 to 3, a pin 56 that functions as a protruding locking member is attached to the side surface of the record operating member 38, and a pair of notches that function as a locking groove are provided at the upper end of the side surface of the movable chassis 12. 58.59 are formed.

Of these notches 58 and 59, the notch 58 on the front side of the tape recorder is located when the record operating member 38 is protruded by the biasing force of the tension spring 48, that is, when the pin 40° 4
1 is formed to be located below the pin 56 when it comes into contact with the rear side of the long grooves 42 and 43.

Further, the notch 59 on the back side is formed so as to be located below the pin 56 when the pin 40, 41 slides to the pushed-in position where it abuts the front side of the long grooves 42, 43.

Further, a switch such as a microswitch 60 for changing the direction of tape running is attached to the side surface of the record operating member 38.

When the record operating member 38 slides to the protruding position, the microswitch 60 is activated by the reverse switch 62.
can be moved within the stroke range and pressed by the reverse switch.

Locking grooves such as notches 58 and 59 corresponding to the two positions of the protruding locking members such as the pins 56 attached to the sliding record operating member 38 as described above are provided at the upper end of the side surface of the movable chassis 12. The rear notch 58 is configured for recording mode, and the front notch 59 is configured for playback mode.

Therefore, if the movable chassis 12 is raised at the protruding position of the record operating member 38, the pin 56 will move into the notch 59.
It is inserted and locked inside.

Further, when the movable chassis 12 is raised in the push-in position where the record operating member 38 is pressed against the biasing force of the tension spring 48, the pin 56 is inserted into the notch 59 and locked.

In this way, when the pin 56 is locked in either of the notches 58 or 59, the record operating member 38 is fixed and prevented from sliding, so there is no room for malfunction of the record operating member, and the recording state or The regeneration state can be maintained reliably.

Release of the pin 56 from the notch 58,59 is facilitated by pressing the movable chassis 12 downward.

As described above, according to this invention, the drawbacks of the known techniques can be completely eliminated despite the extremely simple structure.

Further, a head mounting plate 30 on which the erasing head 26 is arranged is rotatably attached to the fixed chassis 20, and a torsion spring 34 is wound around the rotation pin 32 of the head mounting plate 30.
is biased toward the stopper 36.

When the head mounting plate 30 comes into contact with the stopper 36, the erasing head 26 is positioned facing the tape running path so that it can come into contact with it.

A notch 50 is formed in the upper surface of the record operating member 38, into which a screw 52 protruding from the head mounting plate 30 is inserted.

Here, if the record operating member 38 is in the protruding position, the edge of the notch 50 contacts the screw 52 and rotates the head mounting plate 30 against the biasing force of the torsion spring 34, thereby retracting the erasing head 26. This makes contact between the erasing head and the tape impossible.

Therefore, the record operating member 38 is in the protruding position and the pin 5
In the reproduction mode in which the tape 6 is locked in the notch 59, the erasing head 26 does not operate at all, completely preventing erasure of the tape due to malfunction during reproduction.

Furthermore, a microswitch 60 for switching the tape running direction is attached to the record operating member 38.

In the recording mode in which the record operating member 38 is pushed in and the pin 56 is locked in the notch 5B, this microswitch 60 is located outside the stroke range of the reverse button 62 and cannot be pressed. Even if the reverse button 62 is pressed due to malfunction, there is no possibility that the running tape will be switched.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view of the main part of the tape recorder in stop mode, FIG. 2 is a perspective view of the main part of the tape recorder in recording mode, and FIG. 3 is a part of the part shown in FIG. It is an enlarged view. 10... Tape recorder, 12... Movable chassis, 20... Fixed chassis, 26...
... Erasing head, 34 ... Torsion spring, 3
8...Record operation member, 48...Tension coil spring, 50...Top surface notch, 52...
... Screw, 56 ... Pin, 58.59 ...
...Notch, 60...Micro switch,
62...Reverse button.

Claims (1)

[Scope of utility model registration request] In a tape recorder in which recording and playback conditions are set by moving a movable chassis on which reels, capstans, etc. A tape recorder characterized in that a movable chassis is provided with locking grooves in which the protruding locking members are respectively locked in an irremovable manner.