JPH0345357Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a cassette deck, and particularly to a door provided in a cassette half insertion slot.

The cassette insertion structure used in the cassette deck includes one in which the cassette is inserted in the width direction of the cassette half, and one in which the flat part of the cassette half faces the front. In this case, the former cassette half insertion structure is a structure in which the cassette half is inserted in the width direction of the cassette half, so that the surface area on the front side can be reduced, so it is a structure suitable for miniaturization. In a cassette deck constructed such that the cassette halves are inserted in the width direction thereof, a door is provided at the opening portion of the cassette deck, and the door is configured to be pushed out at the leading end of the insertion cassette half in the insertion direction.

FIG. 1 is a sectional view showing the main part of the door in a conventionally commonly used cassette deck.
In particular, it shows the state in which the cassette half has been inserted and dropped. A grill 2 is fixed to the front part of a case 1 constituting a cassette deck. And, in a part of this grill 2, there is a cassette half 3.
An insertion port 2a is provided for inserting the 2D in the width direction, and a flat door 5 is provided on the back side of the insertion port 2a to rotate vertically about a shaft 4 to close the insertion port 2a. is provided. This door 5 is given the ability to rotate in the direction of closing the insertion opening 2a by a spring (not shown) provided on the shaft 4 portion. Therefore, when the cassette half 3 inserted from the insertion opening 2a is dropped into a predetermined position, the lower end 5a of the door 5 is inserted into the cassette half 3.
is in contact with the surface 3A, and closes the insertion opening 2a.

However, in a cassette deck having such a door structure, when an attempt is made to operate the eject mechanism to take out the installed cassette half, the cassette half 3 that has been dropped will be removed.
First, as shown in FIG. 2, it is lifted upward and then pushed out toward the insertion port 2a. In this case, the tip 5a of the door 5 is in contact with the minimum thickness surface 3A of the cassette half 3, and the door 5 is in a substantially horizontal state due to the lifting operation of the cassette half 3. Therefore, if the cassette half 3 is ejected in this state, the tip of the door 5 will hit the slope 3B formed at the boundary with the maximum thickness surface 3C of the cassette half 3, and this will cause the cassette half to eject. There is a problem in that the halves cannot be ejected smoothly.

Therefore, the object of this invention is to reduce the load on the door during ejection of the cassette halves.

In order to achieve such an object, the cassette deck of the present invention includes an insertion opening into which a cassette half having a step formed between the minimum thickness surface and the maximum thickness surface on the front edge side is inserted and set in the width direction; A door is attached to the back side of the insertion slot so as to be openable and closable, and is pushed open when the cassette half is inserted, and the door includes a closing part that blocks the opening of the insertion opening, and a distal end of the closing part. and a distal end portion that is bent toward the opposite side from the cassette half and contacts only the thickest surface of the cassette half.

FIG. 3 is a sectional view of the main parts of the cassette deck according to this invention, particularly showing the door section, and the same parts as in FIG. 1 are indicated using the same symbols. In the figure, reference numeral 6 denotes a door that is rotatably supported around a shaft 4, and is provided with rotational flexibility by a spring (not shown), as in the case described above. The door 6 has a tip end portion 6a that is bent into an inverted U-shape with a bent portion 6b as a boundary, leaving a portion on the tip side, that is, a portion sufficient to close the opening of the insertion port 2a.

Note that the tip portion 6a refers to the distance from the bent portion 6b to the door 6.
The part up to the tip of the Further, the length of this door 6 is set to be sufficiently long, and the tip portion 6a
is in contact with the maximum thickness surface 3C of the installed cassette half.

In the cassette deck constructed as described above, when an eject mechanism (not shown) is operated to eject a cassette half, the loaded cassette half 3 is first lifted upward as shown in FIG. In this case, since the tip 6a of the door 6 is already in contact with the maximum thickness surface 3C when the cassette half 3 is dropped, when the cassette half 3 is lifted in this way, the tip 6a of the door 6 is pushed upward without contacting the slope 3B of the cassette half 3. and,
Even in the state where the pushing up is completed, the bent portion 6b of the door 6 is only in contact with the surface 3C of the maximum thickness portion of the cassette half 3. Next, the cassette half 3 is inserted into the insertion slot 2 by the eject mechanism.
However, since the door 6 is only in contact with the maximum thickness surface 3C of the cassette half 3 beyond the slope 3B, the door 6 is discharged onto the slope 3B.
Problems such as a part of the door 6 getting stuck on the door 6 do not occur at all, and a smooth ejection operation can be achieved.

In addition, when a part of the door 6 is bent in this way, the opening angle θ ₂ of the door 6 can be reduced to about 1/2 of the opening angle θ ₁ in the conventional example shown in FIG. In this respect as well, the load on the cassette half during ejection is reduced and the ejection operation becomes stable.

As explained above, the cassette deck according to this invention is constructed so that the tip of the door provided in the cassette insertion slot is in contact with the long surface of the maximum thickness part of the installed cassette half. The load on the door is extremely light, and the cassette halves can be smoothly ejected, which is an excellent effect.

[Brief explanation of drawings]

1 and 2 are cross-sectional views showing the main parts of the door in a conventional cassette deck, and FIGS. 3 and 4 are cross-sectional views showing the main parts of the door in the cassette deck according to this invention. 1...Case, 2...Grill, 2a...Insertion slot, 3...
Cassette half, 4...axis, 6...door.

Claims (1)

[Scope of utility model registration request] An insertion slot into which a cassette half with a step formed between the minimum thickness surface and the maximum thickness surface on the front edge side is inserted and set in the width direction; The door includes a closing part that closes the opening of the insertion slot, and a door that is bent from the tip of the closing part to the opposite side of the cassette half, and a tip that contacts only the maximum thickness surface of the cassette deck.