JPH0132184Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a music selection cue device for a cassette deck, and in particular locks the FF operating rod or REW operating lever to the song selection cue state, or releases the lock and returns to the normal playback state. It concerns the mechanism for returning.

To select a desired song from among the various songs recorded on a cassette tape and locate the beginning, set the tape to FF or REW (fast forward or rewind) state. In other words, when you press either the FF or REW operation lever provided on the cassette deck, the electromagnetic plunger is excited by the command of the limit switch that is pressed, and the attraction force causes the operation lever to go into the FF or REW state. Locked. at the same time,
The tape travels at high speed in the FF or REW direction by the action of each mechanism linked to this operating lever. Then, the head detects a cue signal attached to the target head on this high-speed running tape, and uses this signal to de-energize the plunger and perform FF or REW.
This releases the lock on the operating lever that is in this state and returns it to the normal playback state.

By the way, when using an actual tape deck, if the FF is set to the beginning of the song selection like this,
Alternatively, it is necessary to release the lock of the REW operation lever without using the cue signal on the tape. For example, when playing a tape without a cue signal,
This is the case when a desired song is manually selected even on a tape with a cue signal. Therefore, it is necessary to attach a mechanism to the tape deck to manually release the excitation of the electromagnetic plunger that locks the FF or REW operating lever. Moreover,
It is preferable that the manual release mechanism is not provided separately from the FF or REW operating rod, but is integrated into the FF or REW operating rod, from the viewpoint of compactness and simplification of the entire mechanism, or ease of operation of the tape deck.

This invention was made in view of the above points,
The above technical requirements can be met by pressing one of the FF or REW operating rods to lock the track selection cue state, and when manually releasing this, pressing the other operating rod. The purpose of this invention is to provide a ``lock mechanism for a music selection cueing device.''

That is, in the lock mechanism of the present invention, when either the FF or REW operating rod is pressed, the limit switch is activated by the slide plate that is engaged with this operating rod, and the electromagnetic plunger is activated by the command from the limit switch. is excited and locks the pressed operation rod in the cue state, and when manually releasing this lock, press the other operation rod to release the locked operation from the lock plate on the electromagnetic plunger side. The engagement with the rod is released, and as the released operation rod returns,
The slide plate engaged therewith is moved to release the limit switch and de-energize the electromagnetic plunger.

Hereinafter, the present invention will be specifically explained based on illustrated embodiments. Note that this drawing is a perspective view of the mechanism of this embodiment viewed from the bottom side.

In the figure, reference numeral 1 is an FF operating lever, 2 is a REW operating lever disposed below the FF operating lever 1, and 3 is a slide plate disposed below the REW operating lever 2.
These three members are attached to guide pins 4, 4 fixed on the chassis of the tape deck, and are configured to be able to slide along the guide pins 4, 4 in the front-rear direction and independently of each other. Furthermore, the FF operating rod 1 and the REW operating rod 2 are always kept in the forward direction (toward the base end of the operating rod) by a spring (not shown) stretched between the chassis and these operating rods 1 and 2. Each operating rod that is biased and pressed returns to its original state due to this spring.
Pressing pieces 5 and 6 that engage with the slide plate 3 are formed on the FF operating rod 1 and the REW operating rod 2, respectively. And this FF operation lever 1 or REW
When the operating rod 2 is pressed, this pressing piece 5 or 6
When pressed, the slide plate 3 also moves forward together with its operating rod.

A limit switch 7 for excitation of the electromagnetic plunger is arranged near the slide plate 3.
A pressing piece 8 formed integrally with the slide plate 3 is engaged with the operating rod of the limit switch 7.
A coil spring 9 is attached to the operating rod of the limit switch 7, and this coil spring 9 causes the operating rod to always move in the protruding direction (in the direction of the plunger).
OFF side). The coil spring 9 also urges the slide plate 3, which is engaged with the operating rod, toward the front side of each of the operating rods 1 and 2.

Pressing portions 10 for the FF and REW pins P are formed approximately at the center of the FF operating rod 1 and the REW operating rod 2, respectively. The FF and REW pins P are used to interlock the tape drive mechanisms such as pinch rollers and idlers in the tape deck, as well as the head. By moving the FF and REW pins P in the direction of the arrow in the figure, the tape drive mechanism etc. This is to switch the state to FF or REW state (heading state).

On the other hand, an off plate 11 is disposed perpendicular to the tips of the FF operating rod 1 and the REW operating rod 2, and a locking roller 12 is vertically provided on the lower surface of the tip of the off plate 11. This locking roller 1
2 can be engaged with a lock notch 13 or 14 formed at the tip of the FF operating rod 1 and the REW operating rod 2. That is, chevron-shaped protrusions 13a, 14a are formed on the tip sides of these notches 13, 14, and when the respective operating rods 1, 2 are pressed, the locking roller 12 engages with the chevron-shaped protrusions 13a, 14a. It slides along the oblique side and enters the notches 13 and 14.

A lock plate 15 is extendably connected to the proximal end of the off plate 11. That is, as an example, two guide pins 16, 16 are provided protrudingly on the off plate 11, and these guide pins 16, 1
6 is inserted into two elongated holes 17, 17 bored in the lock plate 15. A spring 18 is stretched between the off plate 11 and the lock plate 15, and pulls both plates 11, 15 in the direction of contraction. Further, the connected off plate 11 and lock plate 15 are slidably attached to the chassis. That is, in the figure, 19 is a guide pin fixed to the chassis side, and this guide pin 19 is inserted into a long hole provided in the off plate 11 and a long hole 17 in the lock plate 15, and both plates 11 and 15 are inserted into this long hole. It is adapted to move along a guide pin 19. A spring 20 is stretched between the guide pin 19 and the lock plate 15, and the spring 20 pulls both plates 11, 15 toward their base ends (towards the electromagnetic plunger).

A suction type electromagnetic plunger 21 is disposed at the base end of the lock plate 15, and a suction core 22 is fixed to the base end of the lock plate in correspondence with the electromagnetic plunger 21. This electromagnetic plunger 21 is energized when the limit switch 7 is pressed, and on the other hand, when the cue signal on the tape is commanded or the limit switch 7 is released, it also ejects the cassette pack from the tape deck and turns on the main switch. When turned off, the excitation is released.

The locking mechanism of the present invention has the above-mentioned configuration, and its operation will be explained next.

First, in order to locate the beginning of the tape selection, use either FF or REW operation levers 1 and 2 (in the figure, FF
When the operating rod is pressed, the FF/REW pin P is pushed in the direction of the arrow by the pressing portion 10 formed on the operating rod, and the tape drive mechanism and other components are accordingly set to the cue state. When FF operation rod 1 is pressed,
The locking roller 12 on the off-plate 11 side enters into a locking notch 13 formed at its tip.
At the same time, the pressing piece 5 formed on the FF operating rod 1
The slide plate 3 is moved by the slide plate 3, and the limit switch 7 is pressed by the slide plate 3, so that the electromagnetic plunger 21 is energized.
Then, the lock plate 15 and the off plate 11 are attracted by the electromagnetic plunger 21.
The locking roller 12 at the tip of the off plate 11 engages with the notch 13 at the tip of the FF operating rod, and the FF operating rod 1
is locked in the pressed state, that is, in the cued state.

By the way, to manually release this locked state, press the operating lever (REW operating lever in the figure) on the opposite side. When the REW operating rod 2 is pressed, the locking roller 12 moves along the oblique side of the chevron-shaped protrusion 14a formed at its tip, and the off plate 11 slides toward the tip, so that it is locked with the locking roller 12. The engagement with the FF operating rod 1 is released, and the FF operating rod 1 returns to the front. In this case, the electromagnetic plunger 21 remains excited and the lock plate 15 is attracted to the electromagnetic plunger 21, so that only the off plate 11 moves in the extension direction with respect to the lock plate 15 against the force of the spring 18. When the locked FF control lever 1 returns to its original position,
The slide plate 3 that was pressed by this also returns to its original position, so the limit switch 7 is turned OFF.
The electromagnetic plunger 21 is de-energized. Then,
Since the lock plate 15 is in a free state, the action of the spring 18 causes the lock plate 15 and the off plate 11 to be returned to the shortened state. In this way, when the locked FF operating lever 1 returns, the FF/REW pin P pressed by it also returns, and the tape deck returns to its normal playback state.

Incidentally, if the REW operating lever 2 is pressed to lock the cue, contrary to the above explanation, pressing the FF operating lever 1 will release the lock in the same manner.
Also, if the main switch is turned off when the tape cue signal or cassette pack is ejected,
Since the electromagnetic plunger is de-energized, the lock is released.

As mentioned above, with the lock mechanism of the present invention, if the operating lever on the non-locked side is pressed, the lock on the operating lever on the opposite side is released, so the state of selecting the beginning of a song can be arbitrarily changed by manual operation. It has the advantage of being removable. In particular, the present invention provides a means for releasing the lock,
Since it is also used as the FF/REW operating rod, the entire mechanism can be made smaller and simpler, and its operability is also excellent.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the locking mechanism of the present invention seen from below, showing the locked state of the FF operating lever. Second
The figure is a perspective view of the engagement portion between the off plate and the operating rod in a state in which the lock is being released. 1...FF operation lever, 2...REW operation lever, 3...
Slide plate, 4... Guide pin, 5, 6,
18... Pressing piece, 7... Limit switch, 9...
... Coil spring, 10 ... FF/REW pin pressing part, 11 ... Off plate, 12 ... Locking roller, 13, 14 ... Notch, 13a, 14a ...
Chevron protrusion, 15... Lock plate, 16, 19
... Guide pin, 17 ... Long hole, 18, 20 ...
Spring, 21... Electromagnetic plunger, 22...
core.

Claims (1)

[Scope of utility model registration request] It is equipped with a slide plate that is pressed and moved by the FF operating rod or the REW operating rod, and a limit switch that is operated by the slide plate, and a notch is formed at the tip of the FF operating rod and the REW operating rod, and the notch is formed at the tip of the FF operating rod and the REW operating rod. The tip of the off plate is removably engaged with the off plate, the off plate is telescopically connected to the lock plate, and a spring is tensioned between the off plate and the lock plate to pull both plates in the shortening direction. A lock mechanism for a music selection cue device, characterized in that an electromagnetic plunger is provided at the base end of the lock plate to attract the lock plate together with the off plate, and the electromagnetic plunger is excited by the limit switch.