JPS5827893B2 - Head plate operation mechanism in tape player - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the invention of a head plate operating mechanism for a tape back, which automatically switches the locked state of the head plate such as a fast forward/rewind mechanism in a tape back to reverse the tape feeding direction of the deep player. The release operation is performed by appropriately interlocking with the feed direction reversal switching mechanism for operation with a relatively simple configuration, and the above-mentioned fast forwarding or rewinding state is automatically canceled and the desired state is accurately set for subsequent tape playback. It is something that we are trying to form.

Mechanisms for fast forwarding and rewinding the tape of a tape pack loaded in a tape player and locking the fast forwarding or rewinding state of such a fast forwarding/rewinding mechanism have been known and have been practiced to some extent. There is.

That is, by locking such a fast-forward/rewind mechanism in each state, the operator no longer has to worry about holding the lever of the mechanism in the respective fast-forward or rewind state, and can easily operate the mechanism by simply operating it once in those states. You can complete fast forwarding or rewinding of the period.

However, in such a conventional fast-forward/rewind lock mechanism, the eject operation is performed to eject the tape cartridge at the end of each fast-forward or rewind operation. Although it is preferable to signal the completion of rewinding and to eliminate the need for removing the tape back from the player, such fast forwarding and rewinding operations were originally ), it is not necessarily desirable.

The lid handler cannot play the ejected item as described above unless he pushes it back into the playing state. In particular, if the tape back that was sent to Nijief 1 is removed from the player's pack loading port. It has the disadvantage that it is cumbersome to handle because it may be pushed out so strongly that it may fly out of the player.

The present invention was developed through research to eliminate the disadvantages of the conventional products as described above, and the above-mentioned A4 forwarding and rewinding states are locked with a locking rod attached to the head plate, thereby achieving the respective objectives. and actuate the electromagnetic plunger by the signal obtained at the tape terminal,
This lock state can be released with a simple configuration,
By using this electromagnetic plunger to perform an auto-reverse operation, the tape can be played back (or recorded) immediately after fast-forwarding or rewinding.

That is, a specific embodiment of the present invention as shown in the attached drawings will be described.A tape deck 10 having a pack guide 5 having a pack receiving frame 4 flexibly attached to the front end thereof is disposed on the top thereof. Manually operated lever 1 for fast forward/rewind switching operation and eject lever 12 on the front side
The manual operating lever 1 is mounted on the bottom surface of the deck 10 with a pivot 13 as specifically shown in FIG.
Further, the eject lever 12 can be freely slid back and forth along a guide rod 22 provided on a holding frame body 21 fixed to the deck 10.

However, the details of the mechanism connected to the manual operating lever 1 described above are arranged under the bottom of the deck 10 as shown in FIG. The engaging protrusion 1a formed at the tip of the manual operation lever 1 is attached to the deck 10 at the intermediate corner by the pivot 13, and the guide pin 14a is also provided to protrude below the bottom surface of the deck 10.

14a is engaged with an engagement recess 15d which is one end of a lock rod 15 provided slidably in the elongated holes 14, 14, and another end formed at the other end of the lock rod 15.
A T-line passive portion 16a formed at one end of the interlocking member 16 is provided in the two engaging recesses 15f.

A joint 17 provided on the back surface of the deck 10 at a pivot joint 17b so as to join the joints 17a and 17a to the joint 16a.
A protrusion 17c located in the middle of the two is fitted.

The interlocking rod 16, which has the passive parts 16a and 16a formed on one end side as described above, has a guide pin 16c provided in the long holes 16b and 16b on the bottom surface of the deck.

16c is engaged and is slidable in the length direction,
Further, a spring 16e is stretched between a locking portion 16d formed at the intermediate portion and one of the guide pins 16c, 16c, so as to constantly push the interlocking rod 16 in the direction of the joined body 17. Furthermore, a U-shaped locking recess 16f is provided at the other end.

Engaging with the locking recess 16f is an actuating piece 18 whose base end is pivoted 18a on the bottom surface of the deck 10.
The operating piece 18 has a protruding part 18b in the middle thereof, and a passive part 18c as a folded locking part is formed at the tip of this actuating piece 18. Appearance 2b of plunger 2a in mechanism 2
is being forced to face

Note that lock portions 15b and 15c are formed on both sides of a deep mountain-shaped receiving portion 15a in the middle portion of the lock rod 15 described above.

As shown in FIG. 1, a locking rod 19 protrudes from the back surface of a head plate 20 that is slidably provided on the top surface of the deck 10 and faces the portion 15c.

The automatic feed switching mechanism performed by the electromagnetic mechanism 2 as described above is as shown in FIG. 1, and is formed on the plunger 2a as shown in FIG. Another view 2c is interlocking piece 7
Connected to one end, the tip 7a of the interlocking piece 7 faces the cam hole 8a of the switching plate 8, which is provided on the deck 10 with a pivot 28. A tension spring 27 is provided and acts to pull out the plunger 2a from the electromagnetic mechanism 2 via the interlocking piece 7.

A connecting rod 9 separately provided at the tip of the switching actuation plate 8 is connected to the switching plate 3 provided on the deck 10 in a known manner, that is, in this embodiment, the actuation of the eject lever 12 in FIG. It is known in the art that the switching plate 3, which slides parallel to the direction, has a cam part formed on the side facing the playback position that engages the driven pin of the pinch rollers (two) on the head plate 20. 1- It is similar to the IJ berth mechanism, and when one of the driven pins falls into each part of the cam part, the pinch roller provided with the driven pin is released from the pressed state against the capstan, and other The pinch roller provided with the passive pin is pressed against the capstan by being pushed up by the peak of the cam portion, thereby forming a tape feeding relationship, and in this way, the selected tape The plunger 2a as described above is drawn into the electromagnetic mechanism 2, and the switching operation is performed through the operation of the switching operation plate 8.

FIG. 3 shows another embodiment according to the invention,
That is, the actuating piece 1 with the passive part 18c as shown in FIG.
In place of 8, the actuating piece 1 has a cam portion 18d which is an engaging portion.
8' is used, and for the connection with the lock rod 15, an interlocking member 16 simply using pivots 23 and 24 is used, and the interlocking member 16 has a pivot 25 in the middle and is connected to the back side of the deck 10. It is pivoted.

That is, if the configuration shown in FIG. 3 is adopted, at least the configuration of the interlocking member 16 can be considerably simplified.

4 and 5 show an advantageous attachment means between the deck 10 and the bottom plate 30 of the manual switching lever 1 in the configuration of the present invention as described above.

That is, a relatively large pivot hole 32 with an opening 31 on one side is formed in the U-shaped bent corner of the manual operation lever 1.
On the other hand, in the pivot 13, there is a support portion 33.33 having approximately the same diameter as the pivot hole 32, and a constriction portion 34.3 having a smaller diameter than that of the pivot hole 32.
4 and a small-diameter protrusion 35 are formed at the top, respectively, and a C-shaped tongue 35 that engages with such a constriction 34 is employed.

That is, the installation is as shown in exploded view A-C in FIG. 5. First, as shown in FIG. In this state, the opening 31.31 of the manual operation lever 1 is oriented with respect to the constriction 34.34 as shown in FIG. 5B. and insert
Next, as shown by the arrow in FIG. 5B, push up the manual operation lever 1 until its top surface touches the bottom surface of the deck 10.
After doing this, the C-shaped tongue 35 is fitted into the upper constriction portion 34 to fix the relative position in the vertical direction.

That is, by doing so, the manual operating lever 1 can be assembled extremely easily even under the conditions in which both the members 10 and 30 are assembled. Dogs tend to protrude from the front of the deck as a minute protrusion and become an obstacle during packaging, transportation, or other handling, but by making this part as described above, it is possible to separate the manual operation lever 1 and handle it. Therefore, it is necessary to assemble it as appropriate just before actual use.

According to the present invention as explained above, a locking state for fast forwarding and rewinding is formed in the locking rod for the head plate, and the locked state is automatically released by a signal obtained at the tape end by an electromagnetic plunger for switching the feeding direction. That is, during normal tape playback, the locking rod 19 of the head plate 20 is located in the receiving part 15a of the locking rod 15, but can be moved to the locking part 15b or 15c by operating the manual operation lever 1. By engaging and locking the head plate 20, the head plate 20 is appropriately retreated from its playback position, the head and pinch roller are retracted, and fast forwarding and rewinding are performed, respectively, and the plunger 2' is activated by a signal obtained at the end of the tape. When a is activated, the lock piece 15 can be operated via the actuation piece 18 or 18' and the interlocking member 16 or 16' to release the locked state, and in this case, the auto-reverse mechanism is activated at the same time. Since the predetermined feeding direction can be obtained by moving the tape forward or backward, the tape can be played back immediately after fast-forwarding or rewinding, making the handling operation extremely easy. This invention is industrially very effective because it is simple and requires only an interlocking member and an actuating piece to be disposed at the tip of the locking rod, and its operation is simple.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention; FIG. 1 is a needle view of one embodiment of the essential parts of a tape player equipped with the mechanism of the present invention, and FIG. 2 shows interlocking-related members related to the manual operation lever. 3 is a partial perspective view showing another embodiment of the same, FIG. 4 is a perspective view showing the disassembled state of the manual operation lever mounting member, and FIG. 5 is a step-by-step diagram showing the assembly process. FIG. However, in these drawings, 1 is a manual operation lever, and 2 is a manual operation lever.
is an electromagnetic mechanism, 2a is its plunger, 3 is a switching plate, 7 is an interlocking piece, 8 is an operating plate, 8a is its cam hole, 10 is a deck, 11 is a head plate, 14 is a long hole, 15 is a lock rod, 15
Reference numerals b and 15c designate the lock portions, 16 and 16' are interlocking members, 18 and 181 are operating pieces, 18c is a passive portion which is an engaging portion, and 18d is a cam portion which is an engaging portion.

Claims (1)

[Claims] 1. A receiving part for regeneration in the middle part of a lock rod that slides and engages with a manual manual operation lever for fast forwarding and rewinding provided on the machine frame at the base end, and a locking part for fast forwarding and rewinding on both sides of the receiving part. The locking rod of the head plate is made to face the receiving portion and the locking portion, and the actuating piece is connected to an interlocking member that is activated by engaging with the tip of the locking rod, and the actuating piece is An operating mechanism for a head plate in a tape player, in which a passive part of one side faces the operation area of an electromagnetic plunger operating part that is actuated by a tape end signal.