JPH0719407B2 - Tape recorder - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape recorder having a magnet erasing type recording / playback function.

2. Description of the Related Art In recent years, as tape recorders have been downsized, many products have been able to perform various operations by utilizing the rotational force of an electromagnet or a motor without using human power. In addition, in the case of a portable type, it is common to erase the magnet during recording due to power saving.

Problems to be Solved by the Invention However, the operation using an electromagnet or the like is relatively large, such as a conventional deck, and many AC erasers are used, and there has been almost no combination with magnet erase until now.

It is an object of the present invention to provide a small-sized electromagnetically-operated tape recorder that has few malfunctions, realizes energy saving by erasing magnets, and saves operating power.

Means for Solving the Problems The present invention uses a small electromagnet of a type in which a fixed iron core and a movable iron core are attracted when a coil is energized, and controls an arm for connecting a head substrate and a recording rod on which an erasing head is mounted. By doing so, it is intended to use recording and playback properly.

Action The present invention, when the electromagnet is energized, the arm is fixed, the recording rod and the head substrate are interlocked to be in a recording state, and when the head is raised, the arm is fixed to the shaft of the substrate to record and stop energization. However, it will be in a recording state. On the other hand, when the electromagnet is not energized, the arm is free and the recording rod does not interlock even when the head substrate is raised, so that the arm is in a reproducing state. As described above, the energy-saving small electromagnet can control the elevation of the erasing head, and in the playback and recording states, the electromagnet does not need to be energized to save energy.

Embodiment A tape recorder according to an embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 to 3 show the states of stop, reproduction and recording of this embodiment, respectively, and the configuration will be described with reference to FIG. In FIG. 1, 1 is a cassette tape, 2 is a mechanical substrate, 3 is a magnetic head, 4 is an erasing head, and 5 is an electromagnet. The head substrate 6 is the magnetic head 3
Is fixed, and the shafts 7 and 8 on the mechanical substrate are used as guides to move up and down.

The recording rod 9 also carries the erasing head 4 and moves up and down with the shafts 7 and 8 as guides. Both the head substrate 6 and the recording rod 9 are urged by springs in the descending direction. The first arm 10 is engaged with the shaft 12 on the recording substrate by using the shaft 11 on the recording rod as a fulcrum of rotation. The second arm 13 uses the shaft 8 on the mechanical substrate 2 as a rotation axis to guide the first arm 10 at one end 13a, and the movable piece 5a of the electromagnet 5 is fixed at the other end 13b. . A spring 14 is attached to the other end 13b in the direction of attraction of the electromagnet 5. As shown in FIG. 3, when the recording rod 9 is raised, the other end 10b of the first arm 10 engages with the shaft 15 on the mechanical substrate to stop the rotation.

The operation of the present embodiment configured as described above will be described below.

When moving from the stopped state of FIG. 1 to the reproducing state of FIG. 2, the head substrate 6 rises. Although a mechanism for raising the head substrate 6 is not shown, a general method may be used, either manually or with a cam power of motor power. At this time, the second arm 13 is rotatable because the electromagnet is not energized, and the first arm 10 is also rotatable. Therefore, even if the shaft 12 on the head substrate 6 rises, only the first arm 10 rotates and the recording rod 9 does not rise.

Next, when moving from the stopped state of FIG. 1 to the recording state of FIG. 3, the recording rod 9 rises as the head substrate 6 rises. At this time, the electromagnet 5 is energized and the movable piece 5a is attracted. When sucked and held, rotation of the second and first arms is blocked, and one end 10a of the first arm 10 and the shaft 12 of the head substrate 6 are engaged. As the head substrate 6 rises,
The first arm 10 is pushed up, and the recording rod 9 and the erasing head 4 rise. In the state of FIG.
Since the other end 10b of the arm 10 has risen, it cannot rotate due to the shaft 15 on the mechanical substrate 2, and the electromagnet 5
The recording state can be maintained even if the power is not turned on. That is, at least while the head substrate 6 is moving upward,
If it is energized, it will be in a recording state.

As described above, according to the present embodiment, the electromagnet 5 itself only needs to be attracted and held, so that it is possible to realize a small-sized and energy-saving tape recorder for electromagnetic operation.

As described above, according to the present invention, it is possible to realize a small recording / reproducing tape recorder which is electromagnetically operated, but saves power by the erasing magnet, saves power by the attracting electromagnet, and saves power during recording by the lock mechanism. is there.

[Brief description of drawings]

FIG. 1 is a plan view showing a stopped state of the tape recorder in one embodiment of the present invention, FIG. 2 is a plan view showing the same reproducing state, and FIG. 3 is a plan view showing the same recording state. 3 ... magnetic head, 4 ... erasing head, 5 ... electromagnet,
6 ... Head substrate, 9 ... Recording rod, 10 ... First arm, 12, 15 ... Shaft, 13 ... Second arm.

Claims (1)

[Claims] 1. A magnetic head, a head substrate for fixing and moving the magnetic head, a magnet erasing head, a recording rod for moving the magnetic erasing head, and a shaft on the recording rod which is rotatable about one end. A first arm that engages with a shaft on the head substrate; an electromagnet in which a coil is wound around a fixed iron core and attracts and holds the movable iron core when the coil is energized;
Movable second arm that holds the movable iron core at one end and uses the axis of the mechanical substrate as a rotation axis, and guides the first arm so as to move in parallel with the recording rod at the other end, and the second arm. A spring for urging the iron core to the attracting position and a fixed shaft on the substrate for holding the rotating position of the first arm when the first arm is raised together with the recording rod are provided. During reproduction, which is unnecessary, if the electromagnet is not energized, the first and second arms are turned by the shafts on the head substrate to bend, and the recording rod is raised even if the head substrate is raised. Does not rise, and during recording, by energizing the electromagnet for at least the rising time of the head substrate, the second arm is fixed and the other end guides the first arm. The head that engages with the shaft on the substrate Tape recorder constructed as the recording rod increases with the plate.