JP2822658B2 - Cassette mounting device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette mounting device used in a cassette type magnetic recording / reproducing device.

2. Description of the Related Art An example of a conventional cassette mounting apparatus will be described below with reference to the drawings. 3 and 4 show a conventional cassette mounting device. 3 and 4, the cassette 1 is guided by the cassette holder 20 in the direction of the arrow F and inserted therein.
The erroneous insertion preventing member 22 on which the erroneous insertion preventing member 22 is suspended around the rotation center 21 is a sprung member 23, 2 having the shaft 21 as a concentric center.
4 is always energized in the G direction. A shaft (2) 25 is inserted into a substantially intermediate portion of the erroneous insertion preventing member 22,
Driving rubber rollers 26 and 27 are press-fitted at positions of the shaft (2) 25 located at the notches of the erroneous insertion preventing member 22.

The urging force of the erroneous insertion preventing member 22 in the G direction is the same as that of the shaft (2).
The end portion 25a of the cassette 25 comes into contact with the notch portion 20a of the cassette holder 20, and the rotation position is regulated. FIG. 2 shows a state in which the cassette 1 is inserted further deeply in the direction of arrow F. By the insertion force of the cassette 1 in the direction of arrow F, the projecting member is formed at the front end inclined portion 1a of the cassette 1.
Against the urging forces of 23 and 24, they come into contact with the driving rubber rollers 26 and 27 and lift the entire erroneous insertion preventing member 22 in the direction of arrow H about the shaft 21 as the center of rotation. Further, when the cassette 1 reaches the upper end 1b of the cassette 1 by insertion, the lever (1) 30 fixed to the right end of the upper surface of the erroneous insertion preventing member 22 by the fastening members 28 and 29 rotates the shaft 21. It rotates in the direction of arrow I as the center.

At the end of the lever (1) 30, a lever (2) 33 about the axis (3) 31 as the center of rotation is rotated in the direction of arrow K by the urging force of the spring member 32, and the other end of the lever (2) The section 33a energizes the cassette insertion inspection switch 34, rotates the drive motor (not shown) of the cassette mounting apparatus, and rotates the gear 35 pressed into the other end 25b of the shaft (2) 25 by a key drive. The driving rubber rollers 26, 27 which are transmitted and have the same rotation center as the shaft (2) 25 rotate in the direction of arrow J, and the friction between the driving rubber rollers 26, 27 and the upper surface of the cassette 1 causes the cassette to rotate. 1 is the cassette holder 20
Is horizontally moved in the direction of arrow F to a position where it comes into contact with the tip cut-and-raised portions 20a and 20b. When the cassette 1 reaches a predetermined position by horizontal movement, the cassette holder 20 is provided with guide pins 38, 39, 39, 39 implanted in the cassette holders to be fitted in the guide grooves 37a, 37b of the side plates 36, 37 provided on both sides. 40, 41 is the side plate 36,
The cassette 1 is guided by the guide grooves 36a, 36b, 37a, 37b and moves vertically (the direct-moving means is not shown), and the cassette 1 is mounted at a predetermined position. Here, the shaft (3) 31 and the cassette insertion detection switch 34 are configured to be implanted and installed on one surface of the side plate 37. When the cassette is ejected, the above-described insertion operation is reversed, and the insertion of the cassette is detected at the same position as the detection of the ejection of the cassette. The ejection completion position of the cassette 1 is indicated by L from the front of the front panel 42 as shown in FIG. And a sufficient grip allowance can be secured.

However, according to the conventional technique, it is necessary to secure a sufficient margin L for the cassette (1). On the other hand, when the cassette is inserted up to the margin L, the cassette is inserted. When the detection switch 34 is turned on and the driving rubber rollers 26 and 27 start rotating in the J direction, when the cassette is grasped by a human hand as shown in FIG. 2 in this state, the driving rubber ropes 26 and 27 and the cassette 1 Slip occurs and causes abnormal early abrasion of the driving rubber rollers 26 and 27, and the abrasion powder of the rubber generated by the abnormal abrasion of the driving rubber rollers 26 and 27 scatters to cause clogging of the magnetic recording / reproducing apparatus. Had defects.

Means for Solving the Problems In order to solve the above problems, the present invention provides a cassette insertion detection switch and a cassette discharge detection switch separately and independently, and a conventional cassette detection and discharge detection switch is dedicated to cassette discharge detection. As a switch, ensure the amount of cassette discharge from the front panel front when discharging the cassette,
The cassette insertion detection switch is independently located at a different location, and the location where the cassette is inserted is such that the rear end face of the cassette is almost flush with the front panel front when the cassette is inserted, eliminating the problem of external pressure when inserting the cassette. An apparatus is provided.

Operation The present invention has prevented the problem caused by the irregular insertion due to the external pressure after the start of the insertion detection at the time of cassette insertion by the above means.

Embodiment Hereinafter, an embodiment of the cassette mounting apparatus of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing the configuration of the present invention. FIG. 4 is a diagram showing a configuration in which a cassette insertion detection switch 50 is provided on the lower surface of the cassette holder 20. The position of the cassette insertion detection switch 50 is the same as that of the cassette 1.
Is inserted in the direction of arrow F, and when the rear end portion 1a of the cassette is inserted substantially flush with the front surface 42a of the front panel 42, the cassette front bottom end portion 1b activates the cassette insertion detection switch 50.
It shall be installed at the position where it can be turned ON.

Even if the cassette 1 shown in FIG. 2 is inserted in the direction of arrow F and the insertion detection switch 34 is turned on, the drive motor of the cassette mounting device is not turned on but is inserted further deeply. When 50 is turned on, the drive motor of the cassette mounting device is activated. When the cassette is ejected, the rotation direction of the drive motor of the cassette mounting device is reversed from the cassette insertion direction and rises from the bottom dead center of the cassette 1 (the rising mechanism is not shown). The driving rubber roller is horizontally moved in the direction of the arrow S by the rotation of the driving rubber roller in the direction of the arrow M from the abutting position of the cut-and-raised portions 20a and 20b of the cassette holder 20. Here, even when the cassette front bottom end 1b passes through the insertion detection switch 50 and the insertion detection switch 50 is turned off, the rotation of the cassette mounting device driving motor is not stopped, and the rotation is continued, and the cassette is further rotated. The rotation of the motor for driving the cassette mounting device is stopped at the time when the motor is discharged in the direction of arrow S to the position shown in FIG.

As is clear from the above description of the embodiment, according to the present invention, the cassette insertion detection switch and the cassette discharge detection switch are provided independently of each other, so that the cassette insertion after the start of automatic insertion at the time of cassette insertion can be performed. It is possible to prevent slippage between the driving rubber roller and the cassette due to external pressure beforehand, and to provide an effect that a secure gripping margin can be ensured even after the cassette is completely discharged.

[Brief description of the drawings]

FIG. 1 is a side view showing a configuration of a cassette mounting apparatus according to one embodiment of the present invention, and FIG. 2 is a side view showing a cassette insertion / discharge detection position of a conventional example, and shows a discharge detection position of the present invention. FIG. 3 is a plan view of a conventional example, and FIG. 4 is a side view thereof. 1 cassette, 20 cassette holder, 22 wrong insertion detecting member, 26, 27 driving rubber roller, 30 lever (1), 33 lever (2), 34 cassette insertion detection Switches (1), 50 ... Cassette insertion detection switch (2), 36, 37 ... Side plate, 42 ... Front panel.

Claims (1)

(57) [Claims] A cassette holder provided in the vicinity of a cassette insertion opening of a front panel for guiding a cassette; a driving roller for moving a cassette in the cassette holder in a horizontal direction; A cassette insertion detecting means provided at a position for detecting insertion of a cassette when the cassette is substantially flush with the front surface of the cassette; and a cassette when a rear end surface of the cassette is ejected from the front surface of the front panel by a predetermined size. A cassette mounting device comprising: a cassette discharge detecting means provided at a position where discharge is detected; and a driving means for driving the driving roller in accordance with a detection result of the cassette insertion detecting means and the cassette discharge detecting means.