JP2819856B2 - Blinder panel opening and closing mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for opening and closing a blinder panel for protecting a cassette insertion portion which is attached to a tape drive for storing a cassette containing a magnetic tape.

[0002]

2. Description of the Related Art A conventional technique will be described with reference to FIGS. 6, 7, 8, and 9. FIG.

FIG. 7 is a right perspective view of a conventional tape drive having a blinder panel opening / closing mechanism, FIG. 7 is a left perspective view,
FIG. 8 is a left side view when the blinder panel is closed, and FIG.
Is a left side view when the blinder panel is opened.

Here, for the sake of explanation, the front panel 109 is omitted in FIG. 7, and a part or all of the side plate L is omitted in FIGS. 7, 8, and 9.

The outline of the conventional blinder panel opening / closing mechanism is as follows. The basic configuration is as follows. Drive shaft 1
01 is held by a bearing 109a of the front panel 109, and the front panel 109 is fixed by a side plate L108 and a side plate R112. These side plates L109, R112
Is fixed to the chassis 110. The blinder panel 105 includes a bearing portion 108 of the side plate L108.
c, supported by the bearing portion 112a of the side plate R112, and urged in the closing direction by an elastic member 106 (coil spring) externally inserted on the right end shaft 105c of the blinder panel 105.

[0006] The rotating member 104 includes a side plate L108.
Thus, it is supported and fixed so as to be rotatable around the rotation fulcrum 104b.

When the blinder panel 105 is closed,
Power is transmitted to the drive shaft 101 by a motor or the like (not shown), and the power is transmitted to the drive disc 102 and the drive disc 10 is driven.
2 rotates clockwise as viewed from the left side view, so that the rotating member 104 urged counterclockwise by the elastic member 107 has the driving pin 103 in its contact portion 104a. It comes into pressure contact, and thereby rotates clockwise about the fulcrum 104b. The driving pin 1 is connected to the blinder panel 105 through the contact portion 105a.
04c. The moment is caused by the gravity of the blinder panel 105 and the elastic member 106 which urges the blinder panel 105 in the closing direction.

Due to the moment, the blinder panel 105 is rotated in the closing direction by the clockwise rotation of the rotating member 104. On the other hand, when opened, drive pin 10
3 is rotated in a counterclockwise direction to rotate the rotating member 10.
4 is released from the holding of the drive pin 103 and is rotated counterclockwise by the elastic member 107. Due to the rotation of the rotation member 104, the drive pin 104c presses the contact portion 105a of the blinder panel 105 while pressing the same.
5 was rotated in the opening direction.

[0009]

However, the prior art has the following problems.

First, the power from the motor is supplied to the drive pin 103.
Therefore, when the opening and closing operation of the blinder panel 105 is completed, the contact comes into contact with the stopper 108a provided on the side plate L108, and the rotation stops. Therefore, it was necessary to stop power transmission at that time.

Therefore, the power from the motor is transmitted only when the blinder panel 105 is opened and closed, which is an obstacle to using the power.

In the prior art, the blinder panel 1
Only when 05 is closed, use the power of the drive pin 103,
At the time of opening, it depends only on the restoring force of the elastic member 107.

However, this restoring force must open the blinder panel 105 against the gravitational force of the blinder panel 105 and the elastic force of the elastic member 106 that intends to bind the blinder panel 105. And the elastic member 107 needs to set an elastic force relatively large.

However, when the elastic force of the elastic member 107 is increased, the force with which the drive pin 103 presses the rotating member 104 is increased, and there is a problem that a larger rotational power is required.

[0015]

In order to solve the above problems, the present invention proposes the following means.

That is, a frictional power transmitting member is provided between the drive shaft and the drive disk so that the drive shaft can rotate even after the drive pin comes into contact with the stopper.

When the blinder panel is opened, the drive pin is pressed against a groove cam provided on the rotating member so that power is transmitted in the direction in which the blinder panel opens.

[0018]

With this configuration, the rotation of the drive shaft can be maintained by the friction power transmission member even after the end of the opening and closing operation of the blinder panel, and when the blinder panel is opened, the drive pin is pressed against the rotary member to rotate the rotary member. Can be rotated counterclockwise.

[0019]

FIG. 1, FIG. 2, FIG. 3, FIG.
This will be described with reference to FIG.

FIG. 1 is a right perspective view of a tape drive provided with a blinder panel opening / closing mechanism according to the present invention, FIG. 2 is a left perspective view, FIG. 3 is a left side view of the closed state of the blinder panel, and FIG. It is a left side view of the state which opened. FIG. 5 is a sectional view of the friction power transmission member.

When the blinder panel 6 is opened, power is transmitted to the drive shaft 1 by a motor or the like (not shown), and the power is transmitted to the drive disk 2 and transmitted from the drive disk 2 to the friction power transmission member 3. . At this time, as shown in FIG. 5, the frictional power transmitting member 3 includes a pressure contact disk 3b and an elastic member 3c between the driven disk 3a and the driving disk 2. The driving disk 2 is fixed to the driving shaft 1, and the pressing disk 3b can rotate without slipping with the driving shaft 1, but is movable in the axial direction, so that the restoring force of the elastic member 3c is applied to the driven circle. The structure is such that the driven disk 3a and the pressure-contacting disk 3b are pressed against each other by transmitting to the plate 3a.

The power transmitted from the frictional power transmitting member 3 having such a structure is transmitted to the driving pin 4 provided with the driven disk, and the driving pin 4 rotates counterclockwise to 4 '.
When it is moved to the position, it comes into pressure contact with the groove cam portion 5e of the rotating member 5. The pressing force and the restoring force of the elastic member 8 rotate the blinder panel 6 in the opening direction against the gravity of the blinder panel 6 and the restoring force of the elastic member 7. At this time, due to the pressing of the driving pin 4 against the rotating member, the elastic member 8 which required a large elastic force in the conventional case requires only a small elastic force by the pressing force of the driving pin 4.

After the opening operation of the blinder panel 6 is completed, the drive pin 4 comes into contact with a stopper 9a provided on the side plate L and the rotation is stopped, but the power of the drive shaft 1 is stopped by the frictional power transmission member 3. Escape. For this reason, it is possible to continue transmitting power to other mechanism members.

Next, when the blinder panel 6 is closed, the drive pin 4 rotates clockwise from the state shown in FIG. 4 and presses against the contact portion 5a of the rotating member 5 to rotate the rotating member 5 clockwise. And In addition to the rotating power, the gravity of the blinder panel 6 and the restoring force of the elastic member 7 cause the elastic member 8 to move.
The blinder panel 6 pivots in the closing direction against the restoring force of. Then, as shown in FIG. 3, even after the drive pin 4 comes into contact with the stopper 9a of the side plate L9, the drive shaft 1 can continue to rotate by the friction power transmission member 3.

[0025]

According to the present invention, the following effects can be obtained.

A) The rotation of the drive shaft can be maintained by the friction power transmission member even after the end of the operation of opening and closing the blinder panel, and other mechanical operations can be performed using the drive shaft power.

B) When the blinder panel is opened, the driving pin is pressed against the rotating member, and the rotating member is urged counterclockwise in order to rotate the rotating member counterclockwise. The elastic force of the elastic member can be set small.

[Brief description of the drawings]

FIG. 1 is a right perspective view of a tape drive provided with a blinder panel opening / closing mechanism according to the present invention.

FIG. 2 is a left perspective view of the same.

FIG. 3 is a left side view showing a state in which a blinder panel is closed.

FIG. 4 is a left side view in a state where a liner panel is opened.

FIG. 5 is a sectional view of a friction power transmission member.

FIG. 6 is a right perspective view of a tape drive having a conventional blinder panel opening / closing mechanism.

FIG. 7 is a left perspective view of the same.

FIG. 8 is a left side view when the blinder panel is closed.

FIG. 9 is a left side view when the blinder panel is opened.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Drive shaft 2 Drive disk 3 Friction power transmission member 4 Drive pin 5 Rotating member 6 Binder panel 7 Elastic member 8 Elastic member 9 Side plate L 10 Front plate 11 Chassis 12 Cassette 13 Side plate R

Claims (2)

(57) [Claims] 1. The power of a drive rotary shaft is transmitted to a drive pin A through a frictional power transmission member capable of generating a slip, and the rotational movement of the drive pin A is rotated about a specific fulcrum. A blinder which transmits to a rotating member urged by an elastic member A in a direction in which the blinder panel opens, and opens and closes the blinder panel urged in a closing direction by a drive pin B attached to the rotating member. Panel opening and closing mechanism. 2. The power of a driving rotary shaft is transmitted to a driving pin A, and the rotation of the driving pin A is rotated about a specific fulcrum. A driving pin attached to the rotating member is transmitted to the rotating member urged by the elastic member A in a direction in which the blinder panel opens, through a plate cam groove having a shape capable of rotating the rotating member in both directions. A blinder panel opening / closing mechanism for opening and closing the blinder panel urged by an elastic member B in a direction to be closed by B.