JPH0422415Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cassette pack selection device used in a cassette tape recorder.

Some conventional cassette tape recorders have built-in electrical circuits that can handle metal and chrome tapes, or normal tapes. With this type of cassette tape recorder, the user must operate a dedicated operating device such as a switching button to switch to an electrical circuit compatible with metal and chrome tape, or normal tape, and then perform recording/playback operations. , forcing the user to perform complicated operations.

The purpose of the present invention is to eliminate the above-mentioned drawbacks of the prior art, and to make it possible to easily select between a metal and chrome tape cassette pack or a normal tape cassette pack using an ejector lever, and to make it possible to easily select between a metal and chrome tape cassette pack or a normal tape cassette pack, and to create an electric circuit corresponding to the tape. To provide a cassette pack selection device capable of switching between different cassette packs.

To achieve this objective, the present invention uses metal,
A switch for switching to a corresponding electric circuit depending on the type of tape such as chrome tape or normal tape, an ejector lever provided with a convex portion at a predetermined position and movable in the ejecting direction and the anti-ejecting direction, and the above-mentioned edge. A switch that has an engaging part that engages with the convex part of the electric lever, and also has a protrusion that passes through a confirmation window formed on the cassette pack depending on the type of tape, and forms an operating part that comes into contact with the switch. When the cassette pack equipped with the confirmation window is installed, the ejector lever is moved in a direction opposite to the ejector, and the convex part of the ejector lever is disengaged from the engaging part of the switch operating lever, and the switch is activated. By rotating the switch operating lever until the protrusion of the operating lever is inserted into the confirmation window of the cassette pack, the electric circuit corresponding to the tape of that cassette pack is switched, and the eject lever is moved in the eject direction. As a result, the convex part of the ejector lever rides on the engaging part of the switch actuating lever, causing the switch actuating lever to rotate and the protruding piece to retreat from the confirmation window formed in the cassette pack. It is characterized by being configured.

Embodiments of the present invention will be described below with reference to the drawings.

The chassis base 1 includes a magnetic head 2, a pair of pinch rollers 3 and a capstan shaft 4 arranged on the left and right sides of the magnetic head 2, and a reel stand 5 rotatably provided above the capstan shaft 4.
A frame 6 erected on the chassis base 1 is provided with an eject lever 7 capable of sliding from side to side. In FIG. 1, the cassette pack 8 indicated by the two-dot chain line has a built-in tape 9 as is known in the art.
is placed on the reel stand 5 and sent from one side of the reel stand 5 to the other by the guide of the pinch roller 3 and the capstan shaft 4 to perform recording and playback operations. The cassette pack 8 is made to fly out by sliding the lever 7.

Next, the cassette pack selection device A in the cassette tape recorder having the above structure has the following structure.

That is, the ejector lever 7 provided on the frame 6 so as to be slidable from side to side has an operating portion 7a at its left end and a convex portion 7b at its upper portion. A switch 10 is fixed to the frame 6 to switch between an electric circuit corresponding to metal and chrome tape and an electric circuit corresponding to normal tape. This switch 1
0 switching operation is performed by rotating a switching lever 11 rotatably provided on the switch 10. Between this switch 10 and the frame 6, there is an engagement piece 12 at the upper left end that engages with the convex portion 7b of the eject lever 7.
a, a protruding piece 12b bent at the upper right end to form an L-shape when viewed from the side, and a protruding piece 12b bent at the lower right end to form a substantially L-shape when viewed from above in the opposite direction to the protruding piece 12b. A switch operating lever 12 having a substantially triangular shape when viewed from the front is provided, which includes an operating protrusion 12c that contacts the switching lever 11. A collar member 15 provided on a shaft 14 that is rotatable around a shaft 13 and that stands upright from the side wall of the switch 10 in the same manner as the support shaft 13 is inserted into an arc-shaped guide hole 16 provided on the side wall of the switch operating lever 12. By mounting it, the rotation of the switch operating lever 12 is reliably guided.

The switching lever 11 of the switch 10 is
As shown in FIG. 4, when the switch 10 is located at the lower position, the switch 10 is switched to the electrical circuit corresponding to the metal or chrome tape, and when it is located at the upper position, the switch 10 is switched to the electrical circuit corresponding to the normal tape. The following explanation assumes that this is done.

Further, 17 is a screw for fixing the switch 10 to the frame 6.

Next, the operation of the cassette pack selection device A having the above structure will be explained.

In general, a cassette pack of normal tape 18
There are convex accidental recording prevention claws 1 on both ends of the side wall of the
8a (Fig. 6), and on the side wall of the metal and chrome tape cassette pack 19,
At both ends there are false recording prevention claws 19a and confirmation windows 19b.
A pair of (Figure 7) are provided.

Therefore, the normal tape cassette pack 18
When the cassette pack 18 is inserted into a cassette holder (not shown), the cassette pack 18 is moved to the recording/playback state position and the ejector lever 7 is simultaneously moved (in the direction B in the drawing) as is well known. Then, the engagement between the protrusion 7b of the ejector lever 7 and the engagement piece 12a of the switch operating lever 12 shown in FIG.
The operating protrusion 1 receives the biasing force of the switching lever 11.
2c tries to rotate clockwise around the support shaft 13, but the protrusion 12 of the switch operating lever 12
b does not rotate because it comes into contact with the side wall of the cassette pack 18 (partially shown by the two-dot chain line in Fig. 4), and the switching lever 11 of the switch 10 does not turn the switch 10 into the electric circuit corresponding to the normal tape. will be done. Then, record on normal tape.
After the reproduction is completed, when the ejector lever 7 is moved in the direction C in the drawing, the cassette pack 18 is ejected by a known method.

Next, by inserting the cassette pack 19 made of metal or chrome tape into the cassette holder, the ejector lever 7 is moved in the direction B in the drawing, and the convex portion 7b of the ejector lever 7 and the engagement piece of the switch operating lever 12 are moved. When disengaging from 12a,
The switch operating lever 12 is rotated clockwise around the support shaft 13 by the operating protrusion 12c that receives the biasing force of the switching lever 11 of the switch 10. The switch operating lever 12 is inserted through the window 19b and rotated further. Then, the rotation prevention of the switching lever 11 by the operating protrusion 12c of the switch operating lever 12 is released, and the switching lever 11 rotates clockwise.
The switching lever 11 turns on the switch 10 to the electrical circuit corresponding to the metal or chrome tape (as shown by the solid line in FIG. 4).

After the recording and playback of the above tape is completed,
When the ejector lever 7 is moved in the direction C in the drawing, the convex portion 7b of the ejector lever 7 again engages and presses the engagement piece 12a of the switch operating lever 12, so that the switch operating lever 12 is supported. axis 1
3 in the counterclockwise direction, the protrusion 12b comes out from the confirmation window 19b of the cassette pack 19, and the operating protrusion 12c returns the switching lever 11 of the switch 10 to its original position, turning the switch 10 into the OFF state. Make it. The cassette pack 19 is then ejected.

As explained above, according to the present invention, switching between electric circuits corresponding to metal, chrome tape, or normal tape can be done with a simple structure of moving the switch operating lever using the ejector lever. To provide a cassette pack selection device which can be easily operated without forcing a user to perform complicated operations and can always record and reproduce metal and chrome tapes or normal tapes in the best condition.

In this invention, since the switch operating lever is associated with the movement of the ejector lever, the switch operating lever does not come into contact with the cassette pack when loading/unloading the cassette pack, and loading/ejecting can be carried out smoothly. etc. will not be destroyed.

[Brief explanation of the drawing]

Fig. 1 is a top view schematically showing a cassette tape recorder embodying the present invention, Fig. 2 is a side view of the main parts of an embodiment of the invention, and Fig. 3 shows the state of the main parts of the embodiment before operation. FIG. 4 is a partial sectional view showing the operating state of the main parts of the same embodiment, FIG. 5 is a perspective view of the switch operating lever of the same embodiment, and FIG. 6 is a view of the normal tape. Side View of Cassette Pack FIG. 7 is a side view of a metal and chrome tape cassette pack. 2...Magnetic head, 3...Pinch roller, 4...
...Capstan shaft, 5...Reel stand, 7...
...Eject lever, 7b...Protrusion, 10...Switch, 12...Switch operating lever, 12b...
... Protrusion, 19... Metal or chrome tape cassette pack, 19b... Confirmation window.

Claims (1)

[Claims for Utility Model Registration] Depending on the type of tape, such as metal, chrome tape, or normal tape, there is a switch for switching to the corresponding electric circuit, and a convex portion is provided at a predetermined position, in the eject direction and the anti-eject direction. A movable ejector lever, an engaging portion that engages with a convex portion of the ejector lever, and a projecting piece that is inserted into a confirmation window formed in a cassette pack depending on the type of tape, and a switch actuating lever forming an actuating part that comes into contact with the switch, and as the cassette pack equipped with the confirmation window is installed, the eject lever is moved in the anti-eject direction, and the convex part of the eject lever operates the switch. When the switch operating lever is disengaged from the engaging part of the lever and rotated until the protruding piece of the switch operating lever is inserted into the confirmation window of the cassette pack, the electric circuit is switched to the one corresponding to the tape of that cassette pack. As the ejector lever is moved in the ejecting direction, the convex part of the ejector lever rides on the engaging part of the switch operating lever, causing the switch operating lever to rotate and a protrusion to form a cassette pack. A cassette pack selection device characterized in that the device is configured to be evacuated from a confirmation window.