JPH0411234Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention provides a tape player capable of locating the beginning of a song by detecting an unrecorded portion between songs recorded on a magnetic tape. The present invention relates to a mechanism for canceling the inter-song detection operation.

[Technical background of the invention and its problems] Various methods have been proposed and implemented as a mechanism for finding the beginning of a song, but basically the tape player's drive mechanism is switched to fast forward or rewind mode. At the same time, the head board is moved to a position where the magnetic head slightly contacts the magnetic tape, and the unrecorded portion is detected by the signal from the magnetic head.
This detection signal is generally used to cancel the fast forward or rewind state and return to the playback state.

By the way, the release of the fast forward or rewind state due to the detection of a non-recorded portion is carried out by turning off the plunger switch that locks the tape player in the fast forward or rewind state when the head detects the non-recorded portion. However, in order to manually release this during detection, either mechanically operate against the attraction force of the plunger, or operate a switch electrically to release the plunger in the same way as during song detection. A cutting method is used.

However, the conventional mechanical release mechanism operates against the force of the plunger, requiring a large operating force. In order to reduce this force, links and other mechanisms are complicated. Even if the plunger breaks during detection, it is necessary to perform a mechanical operation in the same way as manual release, making the structure unavoidable. On the other hand, the means for electrically operating a switch to turn off the plunger also performs release electrically by detecting the head's track interval, so two electrical release systems are required, which constitutes a mechanical means. Compared to sheet metal, it has the drawback of increasing the number of costly switches and wiring. Regardless of the method, the complexity of the structure and the resulting increase in the number of parts hinder the miniaturization of tape players, and in tape players with limited installation space such as car stereos, , was a serious problem.

[Purpose of the invention] The present invention was proposed in order to solve the problems of the prior art as described above, and its purpose is to mechanically change the fast forward or rewind state with a light force even when the plunger is in the suction state. It is an object of the present invention to provide a song interval detection canceling mechanism that can be canceled in a timely manner, and that also enables miniaturization of a tape player by simplifying its configuration and reducing the number of parts.

[Summary of the invention] The song interval detection and release mechanism of the present invention attracts a lock plate with a suction plunger that is energized when a song interval is detected, and a lock member provided on the lock plate allows the song interval detection to be canceled. When locking the fast-forward or rewind lever that has been pushed in for the purpose, this lock plate is connected to the connecting plate via the shaft so that it can be bent freely, and a spring installed in this connecting part keeps the connecting plate and the lock plate apart at all times. When integrated so that the lock member of the lock plate can lock the pushed forward or rewind lever and release the track interval detection, the suction piece provided on the lock plate should remain suctioned to the plunger. , the lock plate is rotated so as to bend from the connecting shaft portion with the connecting plate against the force of the spring, and the lock member provided on the lock plate is released from the pushed fast forward or rewind lever to perform fast forwarding. Alternatively, the rewind lever can be returned to the playing state before being pushed.

[Embodiment of the invention] Hereinafter, an embodiment of the inter-track detection canceling mechanism for a tape recorder according to the invention will be described in detail with reference to the drawings.

As shown in FIG. 1, the fast-forward lever 1 and the rewind lever 2 are constructed with a connecting part so that a head plate (not shown) is interlocked with the fast-forward lever 1 and the rewind lever 2. , the head plate moves to a position where the head 3 disposed on the head plate makes light contact with the tape 4, and the reel bases 5 and 6 rotate at high speed, resulting in a fast forward or rewind state. It is configured so that.

This fast forward lever 1 and rewind lever 2 have
A step-like lock part a for locking the fast forward or rewind lever in the pushed state, and a protruding release part b for releasing the pushed state of both levers,
Furthermore, springs 7 and 8 for return are provided and biased in the backward direction (downward in the figure).

On the other hand, the pushing state of both levers 1 and 2 at the time of song interval detection is performed by a lock plate 11 having a suction piece 10 attached to one end thereof which is suctioned by a suction plunger 9. The lock plate 11 is swingable relative to the suction piece 10 via a connecting portion 12. and,
A lock member 13 for locking the fast forward and rewind levers 1 and 2 is provided at the other end of the lock plate 11, and when each lever 1 and 2 is pressed to a predetermined position, each lever is locked. It is designed to engage with part a.

Further, to the end of the locking plate 11 on the side where the locking member is provided, the other end of a connecting plate 15 whose one end is rotatably held by a shaft 14 is connected so as to be bendable about the shaft 16. This shaft 1
A spring 17 is installed between the connecting plate 15 and the connecting plate 15, so that the connecting plate 15 and the locking plate 11 integrated therewith are rotated in the locking direction (counterclockwise in the figure) with the shaft 14 as the center. energized.

Further, a spring 18 is installed between the lock plate 11, the connecting plate 15, and the shaft 16, so that the lock plate 11 and the connecting plate 15 normally form a straight member without bending. It is configured to be biased in the locking direction (rightward in the figure) around the shaft 16 and to be able to rotate integrally.

The operation of the present invention having the above configuration is as follows.

First, in the play state, as shown in Fig. 2, the fast forward and rewind levers 1 and 2 are in the backward position, and therefore the head plate (not shown in the figure) is in the play (or stop) position. . In this case, the spring 17 attached to the shaft 16 part
As a result, the connecting plate 15 and the locking plate 11 are urged in the locking direction, so the suction piece 10 of the locking plate 11 is in contact with the suction plunger 9, and
The lock member 13 of the lock plate 11 is in contact with the tips of the protruding portions b of the fast forward and rewind levers 1 and 2.

Next, when starting song interval detection, first press the rewind lever 2 of the fast forward or rewind levers 1 and 2, and then press the rewind lever 2 as shown in FIG. The taper 19 of the protruding release portion b presses the lock member 13 of the lock plate 11. In this case, the lock plate 11 is urged in the locking direction (counterclockwise in the figure) by the spring 17 as shown in FIG. direction). At this time, the connecting plate 15 is also biased by the spring 18, and rotates in the releasing direction (clockwise in the figure) while being integrated with the locking plate 11.

Furthermore, when the rewind lever 2 is pushed in and advanced to a predetermined position, the release part b of the lever 2 overcomes the lock member 13, so the lock member 13 is released from the pressure in the release direction, and as a result, Lock plate 1
1 is rotated by a spring 17 about the shaft 14 in the locking direction (counterclockwise in the figure), and the locking member 13 engages with the locking portion a of the lever 2.
As shown in FIG.
Locked to 1. At this time, by passing a current through the suction plunger 9, the suction piece 10 is attracted, thereby maintaining the locked state of the lever 2, and detection of the song interval on the rewinding side is performed.

This song interval detection is used to detect between songs on a tape (unrecorded band).
This is continued until the head 3 is reached, and when the song reaches the interval, a detection circuit (not shown) is activated to stop the current flowing through the suction plunger 9 and automatically cancel the fast forward/rewind operation. That is, as the suction plunger 9 no longer suctions the suction piece 10, the lock member 13 presses the lock part a by the force of the return spring 8 applied to the rewind lever, as shown in FIG. The lock plate 11 rotates about the shaft 14 against the spring 17 in the release direction (clockwise in the figure), the lock member 13 and the lock part a are unlocked, and the rewind lever 2
is returned to the state before being pushed in by the spring 8.

Next, canceling the operation during the song interval detection operation (before the song interval is reached) can be easily performed by a manual operation of pressing the fast forward lever 1 on the opposite side, as shown in FIG. That is, when the fast forward lever 1 is pressed,
The lever 1 presses the lock member 13 in the release direction at the tip of the protruding release portion b. At this time, since the lock plate 11 and the connecting plate 15 can be bent from the shaft 16, the suction piece 10 remains attracted to the suction plunger 9, and the lock plate 11
The connecting plate 15 is bent in a dogleg shape, and the locking member 13 cannot be prevented from being pressed in the releasing direction.
As a result, the locking member 13 is disengaged from the locking portion a of the rewinding lever 2, and the rewinding lever 2 is returned to the position before being pushed in by the spring 8, thereby canceling the detection of the gap between songs.

In the above embodiment, only the case where the rewind lever is pushed in is shown, but the same effect can be obtained when the fast forward lever is pushed in, and in that case, the release is performed by the rewind lever. Needless to say.

In this way, the song interval detection and release mechanism of the present invention has a suction piece swingably provided at one end of the lock plate, and the lock plate is connected to the connecting plate so that it can be bent in a dogleg shape. Even in the suction state, the lock plate can be rotated to unlock the lock member and the pushed-in fast-forward or rewind lever, thereby canceling the inter-track detection midway. Therefore, according to the present invention, it is possible to mechanically release the song interval detection with a light force without going against the attraction force of the plunger, which improves operability and eliminates the need for operating force unlike conventional mechanisms. There is no need for links or the like for reduction, and the structure can be simplified.

In addition to mechanical release as described above, the mechanism of the present invention also allows for rapid forwarding or fast forwarding or release by cutting off the current of the suction plunger from the song interval detection state shown in FIG. Since the rewind lever can be unlocked, there will be no inconvenience even if the power is cut off during the detection of a song interval, and if necessary, an electric release means can be used in combination.

[Effects of the invention] As described above, according to the present invention, it is possible to mechanically cancel mid-track detection with a light operating force, and the structure is simple, making it possible to downsize the tape player. This has the effect of providing a detection release mechanism.

[Brief explanation of the drawing]

Figures 1 to 5 are diagrams showing one embodiment of the song interval detection/cancellation mechanism according to the present invention, with Figure 1 being an overall plan view, and Figures 2 to 5 respectively showing the operation of the main parts. In the plan view, Fig. 2 shows the play state, Fig. 3 shows the start state of inter-song detection and the return state of the lever after the end of inter-song detection, Fig. 4 shows the inter-song detection state, and Fig. 5 shows the state in the middle of inter-song detection. This indicates the release state. 1...Fast forward lever, 2...Rewind lever, 3
... Head, 4 ... Tape, 5, 6 ... Reel base, 7, 8 ... Spring, 9 ... Suction plunger, 10 ... Suction piece, 11 ... Lock plate, 12
... Connecting portion, 13 ... Lock member, 14 ... Shaft, 15 ... Connection plate, 16 ... Shaft, 17
...Spring, 18...Spring, 19...
Taper, a...lock part, b...release part.

Claims (1)

[Claim for Utility Model Registration] A lock plate is attracted by a suction plunger that is excited when detecting an interval between songs, and a lock member provided on the lock plate is engaged with a lock portion provided on a fast forward lever or a rewind lever. In a tape player in which a fast forward or rewind lever pushed in to detect a track interval is locked against the force of a return spring, the locking plate is connected to one end of a connecting plate via a shaft, and A spring is provided between the connecting plate and the lock plate, the other end of the connecting plate is rotatably attached to the base plate, and a suction piece that is attached to the suction plunger is movably attached to the lock plate, so that fast forwarding or winding can be performed. The track interval detection and release mechanism for a tape player is characterized in that the return lever is provided with a release portion for bending the lock plate relative to the connecting plate against the force of the spring when the return lever is pushed in.