JPS5812160A - Cassette loading and unloading mechanism - Google Patents

Abstract

PURPOSE:To increase both the stability and the vibration resistance, by setting a cassette with application of the force only from a single direction. CONSTITUTION:The 3rd 13 is attached rotatably to the 1st member 15, and the 2nd members 11 and 12 having shape of an oblong plate with both bent ends are supported by the member 13 at the lower part. When a cassette 1 is loaded, the member 15 turns with the force of a spring 16. Then the cassette 1 moves to allow the recording and reproduction. In this case the members 11 and 12 receive no force from the member 13 and accordingly gives no force to the cassette 1. The member 13 turns and can be stored into a slight gap formed between the members 11/12 and a main base 14. When the cassette 1 is unloaded, the member 15 is turned by the external forcible power to pull up the members 11 and 12.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cassette attachment/detachment mechanism in a cassette type recording/playback device.

Conventionally, there have been devices of this type as shown in FIGS. 1 and 2. In Fig. 1, sl1lF1 cassette, (2)
(3) is the second member, (4) is the spring, (5) (6) is the rotation axis of the second member, (8) is the first member, (9) is the rotation axis of the first member (8), The ring is a spring.

Next, to explain this operation, the second member (2) (3
) is mounted rotatably about a shaft (6) (6) and is urged by a spring (4) to rotate until the forceps are in a position (1a) where they can be inserted and removed.

When the cassette 11) is inserted from the direction of the arrow in FIG. from(
Rotate to position 8b) and push down cassette +11 from position (1a) to position (11) where one note can be played.

At this time, the second member (ri (3)) rotates from the positions (2a) and (8a) to the positions (21) and (81)), and as a result, the spring (4) is further stretched than the state in (41). Recording and playback is performed in the same state (4b). +11・ is the first member (8) due to external forcing force.
) from the position (8a) to the position type (8b), the above mechanism rotates from the position (To) to (1a
) The conventional cassette loading/unloading device is constructed as described above, so even when the cassette is set in a position where recording and playback is possible, a force is applied to push the cassette upwards, and the spring The strength of aO and the first member (8
) If you do not set the cassette holding position extremely appropriately,
Due to the mounting position of the second members (2) and (3), the elastic shape, and the mounting position of the spring (4), a force acts to lift one end of the cassette (front, rear, left, and right) from the normal recording and playback position, and the head This caused deterioration in the performance of the device due to changes in relative position between the two. Furthermore, even when the cassette is in the correct position in a stationary state, applying vibration to the device causes the cassette itself to vibrate strongly due to the above-mentioned unbalanced upward force, causing deterioration in vibration resistance. moreover,
When ejecting the cassette, the first member (8)
Even if the cassette is rotated to the position where the cassette can be taken out, the second member (3) is not connected to the St member (8), so if the cassette gets caught for some reason and does not rise, the first member ( There was a drawback that a separate mechanism (for example, an extrusion mechanism) linked to 8) would operate, causing a four-way situation.

This invention was made to eliminate the above drawbacks.
The purpose is to provide a nine-cassette attachment/detachment mechanism with good stability and excellent vibration resistance. An embodiment of the present invention will be described below with reference to FIGS. 8 and 4. In the figure, UaS
is the second member, (2) is the eighth member, (b) is the main base, and (to) is the first member.

Here, the suffix a indicates the position of each component when the cassette +11 is at the position where it can be inserted and removed, and the suffix s indicates the position of each component when the cassette (1) is at the recording/reproducing position.

Next, its operation will be explained. The eighth member (to) is the first member (
The 8th member 01) (2), which is rotatably attached to the 8th member 01) and has both ends of a long and thin plate bent, is supported from below by this 8th member 01, ensuring its position (height in the figure). be done. When inserting the cassette (1) from the direction of the arrow,
The first member (to) rotates from the position (15a) to the position (15k) by the QISO force of the spring, and the cassette is removed) +1
1 moves from position (la) to position (1b), and recording and playback becomes possible. At this time, the second member (b) (2) does not receive any force from the eighth member box, and therefore does not apply any force to the cassette (1).

The 8th member (to) can be rotated and accommodated in a small gap between the second member (to) and the main base Q4. When removing the cassette (1), the first member (
By rotating the cassette +15 from (15b) to (15&), the eighth member 01 is pulled up from (1tb The mechanism shown in FIG. 5 and FIG.
rotate in conjunction with the engagement of gears, and the eighth
The member is a part of the first member (to) and one of the second members (
This is an embodiment in which it is possible to attach and detach 11) by lifting only 2).

As described above, according to the present invention, since the cassette is set by receiving force from only one direction, it is possible to obtain a compact attachment/detachment mechanism that can securely fix the cassette at the recording/playback position.

[Brief explanation of the drawing]

FIG. 1 is a front view of a conventional cassette attachment/detaching mechanism, FIG. 2 is a side view thereof, and FIG. 8 is a front view showing an embodiment of the present invention.
FIG. 4 is a side view thereof, FIG. 5 is a front view showing another embodiment of the invention, and FIG. 6 is a side view thereof. In the figure, (1) is the cassette), 0■, (b) is the second member, (g) 011 is the first member, box is the eighth member, and (2) is the spring. Note that the same reference numerals in the figures indicate the same or corresponding parts. Agent Shin Kuzuno −

Claims (1)

[Claims] a first member rotatably provided on one side of the cassette to be rotatable around an axis; a second member rotatably provided on the opposite side of the cassette to be rotatable around an axis orthogonal to the axis; 1
and an eighth member that connects the movement of the second member, or a portion of the first member and the second member that replaces the eighth member. The first member or the second member is rotated to a position where the cassette can be inserted and removed, and the guide mechanism is used to force the insertion of the cassette F.
A cassette attachment/detachment mechanism that enables removal.