JPS61123045A - Cassette loading device - Google Patents

Abstract

PURPOSE:To reduce a cassette inserting force by releasing the connection between a worm and a worm wheel until a cassette is inserted to a prescribed position after taking-out of the cassette. CONSTITUTION:Before cassette insertion, a solenoid 9 is turned on (9-1), and a worm 7 is placed in a position 7-1. When a cassette 2 is inserted to a cassette holder and the arrival of the cassette holder at a prescribed position is detected to turn off the solenoid 9 (9-2), the worm 7 and a worm wheel 8 are restored by a worm shaft restoring spring 20 attached to a worm shaft bearing 21. When the operation of a driving motor 4 is started thereafter, the cassette holder and the cassette 2 are loaded to a chassis part through a driving belt 5, a worm shaft 6, the worm 7, the worm wheel 8, driving gears 13, 14, and 15, a gear 16 with cam, a driving lever 17, and a holder supporting shaft 24.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a front-loading cassette mounting device for a cassette-type magnetic recording/reproducing device.

Conventional technology 2 Bae.

As conventional cassette mounting devices of this type, there are those in which the cassette moving means is always connected, and those in which the cassette moving means is connected via a clutch spring or the like during the connection/connection.

Problems to be Solved by the Invention If the conventional moving means is always connected, when the cassette is inserted with impact, there is no escape in the drive part, so a large load is applied to the drive mechanism, causing damage to parts. will occur.

Furthermore, in the case of a device using a clutch spring, the clutch works against impactful insertion, but there is a risk that repulsion occurs and the cassette slips from the cassette holder.

In contrast to the conventional devices described above, the present invention reduces the cassette insertion force, eliminates the repulsion between the holder and the cassette, and avoids placing a large load on the drive unit when inserting the cassette. This is what I did.

Means for Solving the Problems In order to solve the above problems, the cassette loading device of the present invention has the following features:
.

The worm and the worm wheel are disconnected until the set is inserted into a predetermined position.

By releasing the connection until the working cassette is inserted into a predetermined position, the cassette can be inserted with a very light insertion force, and there is no repulsion between the holder and the cassette.

Embodiment An embodiment of the present invention is shown in FIGS. 1 to 3. In those figures, before the cassette is inserted, the solenoid 9 is 0N (9-1
), and the worm 7 is at the position 7-1 as shown in FIG. This can be easily achieved by making the worm shaft bearing 21 movable up and down by the guide portion of the side plate 3 that holds it. When the cassette 2 is inserted into the cassette holder 23 in this state, the worm 7 and the worm wheel 8 are disconnected, so the cassette 2 is installed at a predetermined position in the cassette holder 23, and when the cassette 2 is further inserted. The cassette holder 23 moves forward with a light force. It is detected that the cassette holder 23 has come to the predetermined position, and the solenoid 9 (i7OF
If F(9-2), the worm 7 and the worm wheel 8 are returned by the worm shaft return spring 20 attached to the worm shaft bearing 21. After that, when the drive motor 4 starts operating, the drive belt 5. The cassette holder 2 is connected via the worm shaft 6, worm 7, worm wheel 8, drive gears 13, 14, drive gear 15, cam gear 16, drive lever 17, and holder spindle 24.
3 and the cassette 2 are attached to the chassis section.

■When jetting, solenoid 9 is 0FF (9-2
) mode and place cassette 2 in cassette holder 2.
3, the solenoid 9 is set to 0N (9-1) upon detecting that it has been completely taken out.

Effects of the Invention As described above, according to the present invention, effects such as (1) light cassette insertion and (2) prevention of repulsion during impactful insertion can be obtained.

5 pages

[Brief explanation of drawings]

Fig. 1 is a side view showing the overall configuration of an embodiment of the present invention, Fig. 2 is a schematic perspective view of the cassette insertion section of the embodiment, and Fig. 3 (
A) and (B) are a schematic perspective view and a sectional view of essential parts of the same embodiment. 1...Chassis, 2...Cassette, 3
...Side plate, 4 ... Drive motor, 5 ... Drive belt, 6 ... Worm shaft, Ri ... Worm. 8...Worm wheel, 9...Solenoid, 1o...Connection lever, 11...
・Connection lever, 12...Connection lever, 13...
... Drive gear, 14... Drive gear, 16.
... Drive gear, 16 ... Gear with cam, 1
7...l [lI lever, 18... Solenoid mounting base, 19... Lever pivot bracket, 20
... Worm shaft return spring, 21...
... Worm shaft bearing, 22 ... Worm shaft bearing. Name of agent: Patent attorney Toshio Nakao and one other person ξ5645mm

Claims (1)

[Claims] A front-loading cassette mounting device for a cassette-type magnetic recording/reproducing device, which has a cassette holder for guiding and holding a cassette, and a cassette moving means for moving the cassette holder to a predetermined position, the moving means including a worm. A cassette loading device comprising a worm wheel and a disconnecting means for disconnecting the worm and the worm wheel until the cassette is inserted into a predetermined position and when the cassette is taken out.