JPS58106B2 - Cassette reversing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cassette reversing device for reversing a tape cassette with a holder set in a cassette chamber of a tape recorder or the like.

In a tape recorder, etc., if it is necessary to invert the tape cassette set in the cassette chamber, operate the eject button to lift the cassette out of the cassette chamber, then pinch it with your fingers, invert it, and put it back into the cassette chamber. Also, for the so-called Kangaru pocket type tape cassette, which is placed in a cassette holder and set in the cassette chamber, the holder is raised once, the cassette is picked out from the boulder, the cassette is turned over, and the cassette is placed in the holder again. I try to set it in the cassette room later.

In other words, all of the above methods involve pinching the cassette with your fingers and inverting it.

However, having to pick up the cassette with your fingers every time you flip it is not only cumbersome to operate, but can also accidentally damage the tape, and in the worst case scenario, it can make the tape cassette itself unusable. There are five things that could happen.

On the other hand, in some conventional car stereos and the like, a result equivalent to reversing the cassette is obtained by switching the direction of tape feeding and the drive position of the head without reversing the cassette itself.

However, such devices require an expensive multi-head and a complicated mechanism for reversing the feeding of the tape, and in some cases require solenoid valves, etc., making them expensive and attracting particular attention these days. It cannot be used in applications where space is limited, such as an ultra-small chip recorder.

This invention was made in view of the above circumstances, and allows the tape cassette to be reversed along with the cassette holder without touching the tape cassette, and also prevents dirt from entering the cassette chamber. It is an object of the present invention to provide a cassette reversing device that has a simple configuration and is inexpensive.

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

FIGS. 1a and 1b show an example in which the present invention is applied to a tape recorder.

In the figure, 1 is a tape recorder main body, and this tape recorder main body 1 is provided with a cassette chamber 2, a speaker hole 3, and the like.

The cassette chamber 2 is provided with a pair of reel drive shafts 4, 5, cassette guide pins 6.7, and a capstan shaft 8, as well as an eject lever 10 interlocked with an eject button 9.

On the other hand, a cassette holder 11 is removably inserted into the cassette chamber 2.
has been established.

This holder 11 stores and holds a tape cassette 12, and has an insertion opening and both side surfaces of a flat box that are opened to predetermined positions so as to sandwich the flat tape cassette 12 from above and below.

That is, as shown in FIG. 3, the holder 11 has a pair of drive shaft insertion holes 21 and 22 on its upper and lower surfaces, similar to the tape cassette.
A pair of cassette guide pin insertion holes 23 and 24 and a capstan shaft insertion hole 25 are bored.

Further, notches 26 and 27 are provided extending from the upper surface to the rear surface of the holder 11 and from the lower surface to the rear surface, and rotary bearings 13, which will be described later, are formed at equidistant positions therebetween.

In this way, insertion holes are formed on the outer surface of the holder 11, and strip-like protrusions 28 and 29 are formed on the inner surface of the holder 11 to protrude from both sides in parallel with the back surface.

The strip-like projections 28 and 29 act as a stopper for the tape cassette 12 and are slightly spaced apart from the upper and lower surfaces of the holder 11, and a closing member 30 made of a thin plastic member or the like, which will be described later, is interposed between them.

That is, the closing member 30 housed in the holder 11 is sheet-like and has elasticity, and as shown in FIG.
．． Rectangular through holes 33 and 34 are bored in the portion located at 27.

The closure member 30 formed in this manner utilizes its own elasticity to tightly adhere to the inner wall of the holder 11 through gaps between the inner wall of the back surface and the protrusions 28 and 290 and between the protrusions 28 and 29 and the inner walls of the upper and lower surfaces. It is placed in the condition.

On the other hand, the holder 11 is supported by a rotation bearing 13 as shown in FIG.
It is made to be rotatable in the direction of the arrow shown in FIG.

In this case, the reversing mechanism of the holder 11 is specifically shown in FIG.

That is, the holder 11 is provided with a shaft 14, and this shaft 14 is inserted into a cylindrical rotary bearing 13 to enable rotation in the direction of the arrow A mentioned above.

The rotary bearing 13 is provided with a boss 13a at its end portion, and this boss 13a is pivotally supported by a pin 15 implanted on the inner wall surface of the cassette body 1, so that the holder 11 can rotate in the direction of the arrow B mentioned above.
The cassette can be raised and lowered within a range of about 900 degrees from an upright state to a state where it is set in the cassette chamber 2.

Further, the rotary bearing 13 is provided with a spring-loading boss (not shown) at the end thereof, and a spring 16 is stretched between the boss and the inner wall surface of the cassette case body 1.

This spring 16 applies a biasing force in the upright direction to the rotary bearing 13, and this biasing force is applied when the rotary bearing 13 rises at a predetermined angle, that is, when it exceeds the put point of the spring 16 shown in Fig. 2. Make it act rapidly from

On the other hand, the eject button 9 is provided with an operating shaft 17.

This shaft 17 is supported by a bearing 19 via a spring 18, and is movable to the right in the figure by pressing the eject button 9.

Further, an eject lever 10 is provided opposite the tip of the shaft 17.

This lever 10 applies an initial rising force to the holder 11, and is rotated by the rightward movement of the shaft 17 to raise the holder 11 to a predetermined angle, that is, to the point where the biasing force of the spring 16 acts. That's what I do.

In the cassette holder 11 thus formed, the push rod 36 of the closing member 30 is bored adjacent to the moving groove 13a of the rotation bearing 13 of the cassette chamber 20, that is, at a position where it can be inserted into the notches 26, 27 of the holder 11. ing.

Note that 20 is a magnetic head for recording/reproducing.

However, the cassette reversing device configured in this way is
First, the tape cassette 12 is stored with the cassette holder 11 in an upright position.

At this time, since both sides of the holder 11 are open, the cassette 12 can be easily loaded without touching the tape.

After that, the holder 11 is set in the cassette chamber 2.

At this time, as the holder 11 descends, the push rod 36 provided in the cassette chamber 2 is stored in the notch 27.
This push rod 36 is connected to the 7 flange 34 of the through hole 34 of the closing member 30.
Press part a.

Therefore, the closing member 30 moves upwardly of the holder 11, and the drive shaft insertion hole 31 formed in the closing member 30 moves to the front side of the drive shaft insertion hole 21 on the upper surface of the holder 11.

Therefore, as shown by the dotted line in FIG. 3A, the drive shaft insertion hole 21, cassette guide pin insertion hole 23, and capstan shaft hole 25 of the holder 11 are closed with the closing member 30.

In this case, the drive shaft insertion hole 32 located below the closing member 30 is inserted into the drive shaft insertion hole 2 below the holder 11 when pushed by the push rod 36.
2, so that the drive shaft 5 can be easily inserted.

Next, when it is desired to invert the cassette 12, the cassette holder 11 is stood up, and then the holder 11 is rotated 180 degrees and set in the cassette chamber 2 again.

Similarly to the above case, the closing member 30 is closed by the action of the push rod 36.
is pushed upward by pushing the flange 33a of the through hole 33.

In this case, since the through hole 33 is located considerably below the push-back portion, the push rod action is more effective and pushes the closing member 30 upward.

In this way, the drive shaft hole 22, capstan shaft hole 25, and guide pin hole 24 located on the upper surface of the holder 11 are closed in the same manner as described above.

Therefore, by closing each hole formed in the holder that closes the cassette chamber with a sheet-like closing member housed inside, there is no possibility that dirt, dust, etc. may enter the cassette chamber during use.

Moreover, since the closing member has elasticity, when pressed by the push rod, the closing member moves so as to come into sliding contact with the inner surface of the holder, thereby maintaining a higher airtightness between the holder and the closing member.

FIG. 5 shows another embodiment of the present invention, in which two closing plates 41 and 42 are provided in the holder 40, and the closing plates 41 and 42 are provided inside the holder 40.
1 and 42 are slid left and right using the rotation of the holder 40, so that the drive shaft insertion hole 43 on the top surface is always closed.

That is, as shown in FIG.
is installed protrudingly.

A pinion 48 that meshes with the rack 47 is fixed to the rotating shaft 14, and as the holder 40 rotates 180 degrees, the closing plates 41 and 42 move alternately as shown in FIG. 5a. .

As shown in FIG. 5C, the two closing plates 41 and 42 are pressed against the inner wall of the holder 40 using a thin elastic material 49.

With this configuration, by rotating the holder alternately by 180 degrees (in this case, the holder does not rotate in the same direction but always inverts), the closing plate moves left and right, and the upper surface of the holder is rotated. It closes the openings, ie, the drive shaft insertion hole, the capstan shaft, the cassette guide pin shaft hole, etc.

The present invention is not limited to the above-described embodiment, and the shape of the holder and the holder may be such that the holder automatically rotates in conjunction with the eject button, and various changes can be made without changing the gist.

As detailed above, according to the present invention, it is possible to invert the cassette while it is housed in the holder, and it is also possible to automatically close the opening on the top surface of the holder, thereby preventing dust or dirt from entering the cassette or the cassette chamber. To provide a cassette reversing device which is free from the possibility of dust entering, has a simple configuration, and can be easily operated.

[Brief explanation of the drawing]

FIGS. 1a and 1b show an example of a cassette tape recorder to which the present invention is applied, in which a shows a state in which the cassette holder is set in a cassette chamber, and a shows a state in which the cassette holder is erected. Figure 2 a, b. C is an operational explanatory diagram showing one embodiment of the present invention, and FIG. 3 is a diagram showing the cassette holder on the same side, a is a plan view, and b and c are sectional views. Fig. 4 is a perspective view of the occluding plate used on the same side, Fig. 5 a, b,
c and d are main part explanatory views showing other embodiments of the present invention. 1...Tele recorder main body, 2...Cassette chamber, 11...
...Cassette holder, 26, 27...Notch, 30,
41, 42...Closure plate, 36...Push rod, 48...Pinion.

Claims (1)

[Scope of Claims] 1. A cassette holder that can be inserted into and removed from the cassette chamber, is rotatably mounted on a tiltable bearing, and has at least a pair of drive shaft holes drilled in the upper and lower surfaces of the cassette holder on the upwardly facing side. A cassette reversing device characterized in that a drive shaft hole is closed with a thin closing member when a cassette holder is set in a cassette chamber. 2. The cassette reversing device according to claim 1, wherein the closing member always closes the drive shaft hole of the holder facing upward in response to the reversing operation of the holder.