JPS6144265Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape running display device for an auto-reversing type cassette tape recorder, and is particularly suitable for application to a tape recorder having a roto-bilateral rotating head.

Auto-reversing cassette tape recorders need to display the direction in which the tape is running. Conventionally, LED lights are used to display the running direction of the tape while it is running, and marks are placed near the operation buttons to indicate the running direction. Various proposals have been made, such as a button that indicates which direction the tape is traveling in. However, when the tape comes to a stop state where the running direction is displayed while the tape is running, it is impossible to confirm which tape running direction the head, pinch roller, capstan, electric circuit, etc. have been switched to before stopping.
If you try to record or play immediately after stopping or change the tape cassette, if the auto-reverse mechanism has been switched to the opposite direction of the tape you are trying to record or play, the tape may be accidentally reversed. This has the disadvantage that if the tape is erased, the tape running direction must be changed again.

The present invention eliminates the above-mentioned drawbacks and is an auto-reversing cassette tape recorder equipped with a roto-bilateral rotary head in which the head rotates 180 degrees to switch the tape track to be used in connection with the reversal of the tape running direction. A transparent head part is provided on the cassette lid or front panel so that the head can be seen through or directly checked from the outside, and the tape running direction is switched between the forward direction and the reverse direction. In each case, a tape running direction indicator is provided on the side surface of the head, which can be confirmed from the outside through the transparent part of the head. To provide a new tape running direction display device that allows checking whether the tape running direction has been switched.

An embodiment of this invention shown in the drawings will be described in detail below.

In Figure 1a, 1 is a tape track 1'
is the front edge of the tape cassette, and 2 is the tape. The erasing heads 3a and 3b are inserted into the small holes 1b and 1b on both sides of the large hole 1a provided on the front edge 1', and the erasing heads 3a and 3b rotate rotobilaterally to be inserted into the large hole 1a. A recording/playback head 4 is disposed on a sliding plate 5 which slides to the upper position as shown in FIG. 1a during play operations and returns to the lower position when stopped. Also the first
In FIG. b, 15 is the front panel of the tape recorder main body, and 14 is the opening 15' of the front panel 15.
It is a cassette lid that is attached to the cassette lid so that it can be opened and closed freely. Further, the cassette lid 14 is composed of a transparent part 14a and an opaque part 14b, and the opaque part 14b has a side surface of the recording/playback head 4 that can be visually seen from the outside even when the slide plate 5 is in a stopped state with the sliding plate 5 retracted to the lower position. A head see-through portion 14c is formed as a transparent portion or an aperture so as to be transparent.

On the other hand, among the side surfaces of the recording/playback head 4, there is a side surface facing the inside of the cassette lid 14 and visible from the outside through the head see-through section 14c in the stopped state, and a back side of the side surface, which corresponds to a head rotation mechanism described later. When the recording/playback head 4 rotates 180 degrees to switch the tape track in conjunction with the reversal of the tape running direction, the cassette lid 1
The head transparent part 14 faces the 4th side.
Tape running direction display sections 13, 13 are provided on the side surfaces visible from the outside through c, respectively, to indicate the switched tape running direction, and as shown in Fig. 1b, the sliding plate 5 is retracted to a downward position in the stopped state. Also, immediately before the stop operation, whether the tape running direction has been switched to forward or reverse can be visually checked from the outside through the head see-through section 14c.

Further, a tape guide piece 8 having guide portions 6a, 6b for the tape 2 and a window hole 7 into which the recording/playback head 4 is loosely inserted is fixed as shown in FIG. It is configured to horizontally guide the tape.

Furthermore, the mechanism for rotating the recording/playback head 4 may be of any known type, but for example, as shown in FIG. The lever 11B via the pivot shaft 11A of the sector gear 11 is alternately pressed in the direction of the arrow in the forward or reverse direction with the elasticity of the spring 12 in connection with the auto-reverse operation using the circular gear 10 and sector gear 11. For example, the recording/playback head 4 can be rotated 180 degrees around the axis 9 to accurately move the core position up and down to match the channel to the track.

In this case, the tape 2 on both sides of the rotating recording/playback head 4 is connected to the guide portions 6a of the guide piece 8,
Since the tape 6b is securely prevented from moving up and down while being able to run, the tape 2 will not be twisted even if the recording/playback head 4 is rotated while it is in contact with the tape 2. A reliable auto-reverse or manual reverse state can be obtained without deformation.

Therefore, according to the above-mentioned configuration, when the rotary bilateral type rotary head is configured to rotate 180 degrees in conjunction with the reversal operation of the tape running direction to switch the tape track to be used, when the rotary head is switched in the forward direction, or In any case when the tape is switched to the opposite direction, a tape running direction indicator is provided on the side of the head that faces the cassette lid or opening side to indicate each tape running direction. LED while running
Even if the direction display disappears and the sliding plate retreats downward, the tape running direction can be stopped by visually observing the tape running direction indicator through the transparent head provided on the cassette lid. It is possible to easily confirm in which direction the switch was made immediately before the switch was made. Conventionally, the tape running direction just before reaching the stop state cannot be displayed after the tape has stopped, which eliminates the trouble of accidentally erasing the recording direction or redoing the operation. In addition, there is no need to provide any special mechanism, electric circuit, light emitting element, etc. to display the tape running direction, and it is only necessary to provide a tape running direction indicator on the side of the rotary head, which reduces costs. It has great effects such as being able to perform the following steps and having a simple configuration.

In this embodiment, the cassette lid is provided with a transparent head part, but if the cassette lid is completely transparent or does not use a cassette lid, there is no need to provide a transparent head part, which can further reduce costs. It is something.

[Brief explanation of the drawing]

Figure 1a is a diagram showing the internal mechanism of the front panel.
Figure with the sliding plate in the upper position. FIG. 1b is a view showing the tape recorder viewed from outside with the sliding plate retracted downward. FIG. 2 is a perspective view showing the tape guide piece, and FIG. 3 is an elevational view showing the main part of FIG. 1a. Explanation of symbols: 1...Cassette, 4...Recording/playback head, 5...Sliding plate, 13...Tape running direction display section, 14...Cassette lid, 14c...Head see-through section, 15... Front panel, 15'...opening.

Claims (1)

[Scope of utility model registration request] In an auto-reversing cassette tape recorder having a roto-bilateral rotating head that switches tape tracks by rotating 180 degrees in conjunction with reversal of the tape running direction, the tape running direction displays the tape running direction on the side of the rotating head. What is claimed is: 1. A tape running direction display device comprising a direction display section and configured such that the tape running direction display section can be confirmed from outside the tape recorder even in forward and reverse tape running states or in a stopped state.