JPH04337554A - Blinder panel opening and closing mechanism - Google Patents

Abstract

PURPOSE:To use a driving motive power even for other purposes as well as for opening and closing a blinder panel which is referred to a blinder panel opening and closing mechanism for protecting a cassette inserting part to be fitted to a tape driving device housing a cassette in which a magnetic tape is incorporated and to suppress the power to a min. CONSTITUTION:A driving shaft 1 is equipped with a friction power transmitting part 3, and this transmitting part 3 possesses a cam pin. By this cam pin, a turning member 5 having a turning fulcrum, provided with a cam groove 5e is turned, and the blinder panel 6 is opened and closed by a driving pin 5c provided on the turning member 5.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blinder panel opening/closing mechanism for protecting a cassette insertion section, which is attached to a tape drive device that accommodates a cassette containing a magnetic tape.

0002

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

FIG. 7 is a right perspective view of a tape drive device equipped with a conventional blinder panel opening/closing mechanism; FIG. 7 is a left perspective view;
Figure 8 is a left side view when the blinder panel is closed, Figure 9
is a left side view when the blinder panel is open.

[0004]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.

An overview 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 portion 109a of a front panel 109, and this front panel 109 is fixed by a side plate L108 and a side plate R112. This side plate L109, R112
is fixed to the chassis 110. The blinder panel 105 is a bearing part 108c of the side plate L108.
, is supported by the bearing portion 112a of the side plate R112, and is supported by the right end shaft 1 of the blinder panel 105.
05c is biased in the closing direction by an elastic member 106 (coil spring) that is inserted externally.

[0006] The rotating member 104 is a side plate L108.
It is supported and fixed so that it can rotate about the rotation fulcrum 104b.

When the blinder panel 105 closes,
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
When the driving pin 103 attached to the rotating member 104 rotates clockwise when viewed from the left side view, the rotating member 104, which is biased counterclockwise by the elastic member 107, has the driving pin 103 at its contact portion 104a. They are brought into pressure contact and thereby rotated clockwise about the fulcrum 104b. The blinder panel 105 connects the drive pin 1 through its contact portion 105a.
It is in pressure contact with 04c. The moment is due to the gravity of the blinder panel 105 and the elastic member 106 biasing the blinder panel 105 in the closing direction.

[0008] Due to the moment, the blinder panel 105 was rotated in the closing direction due to the clockwise rotation of the rotating member 104. If one side opens, drive pin 10
Rotating member 10 by rotating 3 counterclockwise.
4 is released from the drive pin 103 and is rotated counterclockwise by the elastic member 107. Due to the rotation of the rotating member 104, the drive pin 104c presses the contact portion 105a of the blinder panel 105 while
5 was rotated in the direction of opening.

[0009]

[Problems to be Solved by the Invention] However, the conventional technology has had the following problems.

First, the power from the motor is transferred to the drive pin 103.
Since the blinder panel 105 is directly connected to the stopper 108a provided on the side plate L108 when the opening/closing operation of the blinder panel 105 is completed, the rotation of the blinder panel 105 is stopped. Therefore, it was necessary to stop power transmission at that point.

[0011] 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 for other purposes.

Furthermore, in the conventional technology, the blinder panel 1
The power of the drive pin 103 is used only when 05 is closed,
When opening, it relied only on the restoring force of the elastic member 107.

However, this restoring force requires the blinder panel 105 to be opened against the gravity of the blinder panel 105 and the elastic force of the elastic member 106 that tries to close the blinder panel 105. , and the elastic member 107 had to have a relatively large elastic force.

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

[0015]

[Means for Solving the Problems] In order to solve the above problems, the present invention proposes the following means.

That is, a frictional power transmission member is provided between the drive shaft and the drive disk so that the drive shaft can rotate even after the drive pin contacts the stopper.

Furthermore, when the blinder panel opens, the drive pin comes into pressure contact with a grooved cam provided on the rotating member, so that power is transmitted in the direction in which the blinder panel opens.

[0018]

[Operation] With this configuration, the rotation of the drive shaft can be maintained even after the blinder panel opening/closing operation is completed by the frictional power transmission member, and when opening the blinder panel, the drive pin is pressed against the rotating member, and the rotating member can be rotated counterclockwise.

[0019]

[Example] Examples of the present invention are shown in FIGS. 1, 2, 3, 4,
This will be explained using FIG. 5.

FIG. 1 is a right perspective view of a tape drive device equipped 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 blinder panel in the closed state, and FIG. 4 is the blinder panel. FIG. Further, FIG. 5 is a sectional view of the frictional power transmission member.

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

The power transmitted from the frictional power transmission member 3 having such a structure is transmitted to the drive pin 4 provided with a driven disc, and the drive pin 4 rotates counterclockwise to rotate 4'.
When it moves to the position, it comes into pressure contact with the grooved cam portion 5e of the rotating member 5. Due to this pressure contact force and the restoring force of the elastic member 8, the blinder panel 6 rotates 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 pressure contact of the drive pin 4 to the rotating member, the elastic member 8, which conventionally required a large elastic force, only needs a small elastic force corresponding to the pressure contact force of the drive pin 4.

After the opening operation of the blinder panel 6 is completed, the drive pin 4 contacts the stopper 9a provided on the side plate L and stops rotating, but the power of the drive shaft 1 is stopped by the frictional power transmission member 3. be spared. Therefore, it is possible to continue transmitting power to other mechanical members.

Next, when the blinder panel 6 is closed, the drive pin 4 rotates clockwise from the state shown in FIG. 4, comes into pressure contact with the contact portion 5a of the rotating member 5, and rotates the rotating member 5 clockwise. shall be. In addition to this rotational force, the gravity of the blinder panel 6 and the restoring force of the elastic member 7 cause the elastic member 8 to
The blinder panel 6 rotates in the closing direction against the restoring force. 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]

[Effects of the Invention] The following effects can be obtained by the present invention.

a) The rotation of the drive shaft can be maintained even after the blinder panel opening/closing operation is completed by the frictional power transmission member, and the drive shaft power can be used to perform other mechanical operations.

b) When opening the blinder panel, the driving pin is brought into pressure contact with the rotating member and the rotating member is rotated counterclockwise, so the rotating member is biased counterclockwise. The elastic force of the elastic member can be set small.

[Brief explanation of drawings]

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

[Figure 2] Same left perspective view

[Figure 3] Left side view with blinder panel closed

[
Figure 4: Left side view with the liner panel open

[Figure 5
】Cross-sectional view of frictional power transmission member

[Fig. 6] Right perspective view of a tape drive device equipped with a conventional blinder panel opening/closing mechanism

[Figure 7] Same left perspective view

[Figure 8] Left side view when the blinder panel is closed

[Figure 9] Left side view when the blinder panel is open

[Explanation of symbols]

1 Drive shaft 2 Driving disc 3 Frictional power transmission member 4 Drive pin 5 Rotating member 6 Blinder panel 7 Elastic member 8 Elastic member 9 Side plate L 10 Front plate 11 Chassis 12 Cassette 13 Side plate R

Claims (2)

[Claims] 1. The power of the drive rotation shaft is transmitted to the drive pin A through a frictional power transmission member that can generate slippage, and the rotational movement of the drive pin A is rotated around a specific fulcrum, and through the plate cam groove. A blinder characterized in that the blinder panel is biased in the closing direction by a driving pin B attached to the rotating member, which transmits a force in the direction in which the blinder panel opens to a rotating member energized by an elastic member A, and opens and closes the blinder panel. Panel opening/closing mechanism. 2. The power of the drive rotation shaft is transmitted to a drive pin A, the rotational movement of the drive pin A is rotated around a specific fulcrum, and the drive pin A is used to control when the blinder panel opens and closes. A driving pin attached to the rotating member transmits force to the rotating member energized by the elastic member A in the direction in which the blinder panel opens through a plate cam groove having a shape that allows the rotating member to rotate in both directions. A blinder panel opening/closing mechanism, characterized in that the blinder panel is opened and closed by an elastic member B in a closing direction by an elastic member B.