JPS6166255A - Cassette recorder - Google Patents

Abstract

PURPOSE:To decrease the shift amount of a cassette when it is loaded and to attain application of the cassette even to a rotary cassette holder, by turning an arm in response to the shift of a cassette holder between its loading/ unloading position and a play position and opening and closing a cover automatically. CONSTITUTION:A cassette holder is moved down from a cassette loading position and set at a play position. Thus an arm 28 turns clockwise round a rotary support shaft 29, and a cassette cover hook part 31 pushes up the lower side surface of a cassette cover side part 5 to the front side. With this push-up action, a lock state of a cover 4 to its closed position is released. Then the cover 4 is pushed up. The cover 4 is turned along the upper edge of an opening surface. The cover 4 is opened automatically by the force of an incorporated plate spring after the cover turned about 45 deg. or more. Then the cover 4 is opened completely.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cassette recorder using a tape cassette with a lid used for magnetic recording and the like.

2. Description of the Related Art Structures of Conventional Examples and Their Problems In recent years, cassette recorders have been widely used in various fields. Particularly in video cassettes for high-density recording, tape cassettes with lids are used to avoid fingerprints and dust. The authors have already proposed the use of such tape cassettes with lids for audio purposes.

Below, we will explain a cassette recorder that uses a tape cassette with a lid and that automatically opens the lid in conjunction with the insertion and setting of the cassette, which the authors have already proposed.

FIG. 1 is a perspective view of an embodiment of the tape cassette with a lid in a closed state, in which 1 is the cassette body, 2 is the upper half of the cassette,
3 is the lower half of the cassette, 4 is the U-shaped lid, 5 is the lid side part, 6
is a shift bin insertion hole, and 7 is a protection plate that prevents the lid 4 from being opened inadvertently.

FIG. 2 is a perspective view showing the lid open state, and 8 is an opening surface 14.
A protrusion for forming a recess for locking.

9.10 is the cutout that forms the opening, 11°12.1
3 is an opening. FIG. 3 is a partial side sectional view showing the locked state.

FIG. 4 is a partial top view showing the inside of the cassette. Numeral 16 is a magnetic tape, 16 is a pivot shaft of the lid 4, and 17 is a pivot shaft fitting hole provided on the side of the cassette body 1. It has a roughly triangular shape that tapers off.

Reference numeral 18 is a leaf spring that urges the one-turn pivot shaft 16 toward the rear.

FIG. 6 shows the relationship between the tape cassette with a lid constructed in this manner and a recorder which automatically opens the seven ports during the cassette setting operation. In FIG. 6, 19 is a shift bin, and 2o is a kick bin. When the cassette 1 is moved in the direction of the arrow B, the shift bin 19 is first inserted into the shift bin insertion hole 6, and the shift bin 19 moves the lid side part 5 in the direction of the arrow B. shift. This releases the locked state of the lid 4.

As the lid 4 moves further in the direction of the arrow, the lower end of the lid 4, which has been pulled away from the opening surface, comes into contact with the kick pin 2o, and the lid 4 is pushed up and rotated by more than 450 degrees (in the direction of the arrow C), due to the force of the leaf spring 18. It is automatically opened to obtain the open state shown in FIG.

However, in the above-mentioned configuration, a large stroke is required for setting, which requires only the setting operation to release the lock by shifting the lid 4, and then to open the lid with the kick pin. This method can only be implemented with a cassette mounting mechanism in which the cassette moves in a vertical force direction while remaining in an almost horizontal position, and is difficult to apply to rotating cassette holders. .

Purpose of the Invention The present invention further improves the above-mentioned cassette recorder, and provides a rotating cassette that requires less movement when installed.
It is an object of the present invention to provide a cassette recorder which can also be applied to a holder.

Structure of the Invention The present invention is a cassette recorder comprising a cassette holder that takes two positions: a cassette insertion/removal position and a playing position, an arm pivotally supported by the cassette holder, and a cassette lid engaging part provided on the arm. The lid can be opened automatically by rotating the arm in conjunction with the movement of the cassette holder from the insertion/removal position to the performance position.

DESCRIPTION OF THE EMBODIMENTS FIG. 6 is a side view showing essential parts of a cassette recorder according to a first embodiment of the present invention, showing the cassette holder in the cassette insertion/removal position and the cassette inserted. In the figure, 21 is a lower chassis, 22 is an upper chassis, 23 is a cassette holder upper plate, 24 is a cassette holder lower plate, and 25 is a cassette holder upper plate.
．． 26 is the guide shaft of the cassette holder, 27 is the upper chassis 2
2. The strut that connects the lower chassis 24; 2. The arm; 2.
Reference numeral 9 denotes an arm rotation support shaft provided on the cassette holder upper plate 23. 30 is a pivot shaft provided at the midpoint of the arm 28, 31 is a cassette lid engaging portion formed by bending the tip of the arm 28, and 32 is another arm with one end attached to the pivot shaft on the arm 28. 3o to form a link mechanism. 3
3 is a pivot shaft that links the other end of the arm 32 onto the chassis 21; 34 is a pin for determining the height of the front portion of the cassette when the cassette 1 is installed in the playing position, and positioning the front, back, left, and right sides;
5 is a height regulating bin at the rear of the cassette.

With this configuration, when the cassette holder is lowered from the cassette insertion/removal position shown in FIG. The lid engaging portion 31 pushes up the lower surface of the cassette lid side portion 6 toward the front. This pushing-up action causes the lid 4 to
The lid 4 is released from the closed position, and the lid 4 is then pushed up, automatically opening the lid 4 and opening it completely (Figure 2).
get.

FIG. 7 shows the lid being opened and installed in the playing position.

FIG. 8 is a partial front view showing the cassette after insertion.

FIG. 9 is a side view showing the main parts of a cassette recorder according to a second embodiment of the present invention, and is an example of application to a rotary cassette holder in which the lid can be opened using only one arm. In order to make the diagram simple and easy to understand, a cassette body without a protective plate was used. In the figure, 36 is the upper plate of the rotary cassette holder, 37 is the lower plate of the cassette holder,
Reference numeral 38 denotes a rotation support shaft, and the cassette holder rotates in the direction indicated by the arrow from the cassette insertion/removal position shown in the figure to take a playing position. 39 is a rotation support shaft provided on the upper plate of the cassette holder, 40 is a rotation support shaft 39
41 is a cassette lid engaging portion provided on the arm 40; 42 is the other end of the arm 4o that is connected to the chassis 21;
slide on top. Reference numeral 43 indicates a positioning pin of the arm 40, and arrow B indicates the rotation direction of the arm 40. With this configuration, when the cassette holder is rotated in the direction of arrow A from the cassette insertion state shown in the figure to the performance position, the tip 42 of the arm 40 slides on the shear 21 and moves in the direction of the arrow A. Along with this, the arm 40 rotates clockwise (in the direction of arrow B) about the pivot shaft 39, and the lid engaging part 41 moves slightly forward from the lower surface of the lid side part 5. push up towards. By this pushing up, the lid 4 is released from its closed position, and by further rotation, the lid 4 is pushed up to a certain height, and then the opening operation automatically proceeds and is completely opened. Ru.

As described above, the cassette recorder according to the present invention is capable of not only opening the lid but also releasing the locking in the same operation even when using a cassette with a mechanism for locking the lid in the closed position as explained in the embodiment. The amount of movement required for this is extremely small.

Further, the cassette holder is not limited to a parallel type, but can also be used as a rotation type.

In addition, when implementing the present invention, in order to smoothly release the lock and subsequently open the lid, it is necessary to correctly position and hold the cassette when inserting it into the cassette holder, and to position the pivot shaft of the arm correctly. Of course there is.

Effects of the Invention The present invention includes a cassette holder that takes two positions: a cassette insertion/removal position and a performance position, an arm pivotally supported by the cassette holder, and a cassette lid engaging portion provided on the arm. This is an excellent cassette that allows the arm to rotate in conjunction with the movement from the insertion/removal position to the performance position, automatically unlocking the lid, and requiring only a small amount of movement. It is possible to realize a recorder.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of the previously proposed tape cassette with lid in the closed state, Fig. 2 is a perspective view showing the lid in the open state, and Fig. 3 is a partial side cross-section showing the lid in the locked state. 4 is a partial top view showing the inside thereof, FIG. 6 is a partial side view showing the lid opening mechanism of the already proposed cassette recorder, and FIG. 6 is a cassette recorder according to the first embodiment of the present invention. 7 is a side view showing the cassette playing position, FIG. 8 is a partial front view at the cassette insertion/removal position, and FIG. 9 is a side view showing the cassette insertion/removal position. It is a side view showing the principal part of the cassette recorder in an example. 1...Cassette body, 4...Lid, 5...
...Lid side part, 19...Shift pin, 20
... Kick-up pin, 28 ... Arm, 29 ... Rotating shaft, 31 ... Lid engagement part. Name of agent: Patent attorney Toshio Nakao (1st person)
Figure d Bay Figure 3 No. Figure 5 Figure 9

Claims (4)

[Claims] (1) Includes a cassette holder that moves between a tape cassette insertion/removal position and a performance position to take two positions, an arm pivotally supported by the cassette holder, and a cassette lid engaging part provided on the arm. A cassette recorder characterized in that an arm is rotated in conjunction with movement of a cassette holder from an insertion/removal position to a performance position to automatically open a lid. (2) The cassette recorder according to claim 1, wherein the arm is rotated in conjunction with movement of the cassette holder by sliding the free end of the arm onto the chassis. (3) The cassette recorder according to claim 1, characterized in that the cassette recorder is constituted by a link mechanism consisting of an arm and a second arm having one end pivotally supported on the chassis. (4) The cassette recorder according to claim 1, wherein the cassette lid engaging portion presses into engagement with the lower side surface of the U-shaped lid.