JPH01220172A - Shutter device - Google Patents

Abstract

PURPOSE:To use the driving source of low energy consumption in order to open two shutter members together on hinges by constituting so that the two pieces of the shutter members are half opened when a cassette is inserted to a cassette attaching/detaching port. CONSTITUTION:When the disk cassette is inserted or ejected, a loading means rises from a lower limit position to an upper limit position. By the rising operation of a means 5, a lever 41 of a shutter turning means 19 is pushed up and a shaft 12 is turned only by a certain angle theta1. An upper shutter board 10 is fitted to this shaft 12 and made in a half opening condition and a lower part shutter board 11 fitted to a shaft to be turned while being interlocked with the shaft 12 is also made in the half opening condition. On the other hand, by accompanying the rotation of a shaft 13, a driving gear 30 of a shutter member turning means 18 is also rotated. Accordingly, a stroke can be made small to draw out the iron core 35 of a solenoid 34 and the solenoid of low power consuming quantity can be used. Next, by flowing a current to the solenoid 34 from such a half opening condition, a cassette attaching/detaching port 3 is released.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention provides information processing for an information storage medium, such as an optical disk, which has a built-in information processing means and a loading means and is housed in a cassette. The present invention relates to an improvement in a shutter device for opening and closing a cassette insertion/ejection opening of an information processing device.

(Prior Art) Usually, in an information processing device using an optical disk as an information storage medium, a shutter device is provided to open and close an insertion/ejection opening for inserting/ejecting a disk cassette containing an optical disk, and a shutter device is provided to open/close an insertion/ejection opening for inserting/ejecting a disk cassette containing an optical disk. The configuration is such that it prevents intrusion into the information processing device.

Conventionally, as this type of shutter device, there are two types: one that opens and closes an insertion port by rotating one shutter member, and one that opens and closes an insertion port by rotating two shutter members.

However, a device in which a single shutter member is rotated inevitably increases the width of the shutter member and requires a large space for rotating the shutter member, making it unsuitable for use in small devices. For this reason, small-sized devices employ a system in which two shutter members are rotated to open double doors.

Conventionally, in this type of shutter device that rotates two shutter members, the two shutter members are interlocked via a group of gears so that the two shutter members open double-door, and the rotation of the rotating gears is controlled by a solenoid. The structure is such that the transmission is transmitted to a group of gears to open and close two shutter members.

(Problem to be solved by the invention) For this reason, conventional shutter devices had no choice but to use a solenoid with large power consumption in order to generate the stroke and force necessary for the two shutter members to double-open. .

The present invention has been made based on the above circumstances, and its purpose is to provide a compact system in which two shutter members are rotated, while also being able to use a drive source with low power consumption. The purpose of this invention is to provide a shutter device that can be used with ease.

[Structure of the Invention (Means for Solving the Problems)] In order to solve the above problems, the present invention provides a method for processing information on an information storage medium housed in a cassette, which incorporates an information processing means and a loading means. The shutter device opens and closes the cassette insertion/ejection opening of an information processing device, which comprises a first and a second shutter member provided near the cassette insertion/ejection opening for opening and closing the cassette insertion/ejection opening; The first shutter member includes a gear group that interlocks the second shutter member and a gear drive mechanism that provides a driving force to the gear group. A shutter member rotating means for rotating the second shutter member;
by transmitting the signal to the shutter member of the first. The shutter rotating member rotates the second shutter member in the opening direction.

(Function) That is, by having the above configuration, the present invention utilizes the displacement movement of the loading means to the position facing the cassette insertion/ejection opening as a rotational movement in the direction of opening the shutter member via the shutter rotation member. The shutter rotation means that requires driving force only needs to perform the remaining rotation after the rotation operation accompanying the displacement operation of the loading means, and an inexpensive, compact drive source with low power consumption can be used. It becomes possible.

(Example) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 6 shows the external appearance of an information processing device 1 incorporating the shutter device of the present invention and a disk cassette 2 as a cassette used therein. Cassette insertion/ejection port 3
The information processing device 1 houses an information processing means 4, a loading means (cassette loading/mounting mechanism) 5, a control mechanism section (not shown), and the like.

When the disk cassette 2 is inserted into the cassette insertion/ejection port 3, the disk cassette 2 is automatically taken in to a predetermined position by the loading means 5. At this time, the front case 2a and the rear case 2b of the disk cassette 2 are automatically opened, and the optical disk 6 as an information storage disk in the disk cassette 2 is partially exposed to the information processing means 4. It is designed to be installed against the Note that the configuration of such information processing device 1 is well known, so detailed explanation will be omitted.

Further, the front housing portion 1a in which the cassette insertion/ejection port 3 is formed also serves as a control panel, and an operation/display means 7 is disposed on the front surface thereof.

In addition, on the back side of the front casing portion 1a, FIGS. 1 to 4 are provided.
As shown in the figure, a shutter device 8 for opening and closing the cassette insertion/ejection opening 3 is provided.

FIG. 2 is a view of the front casing portion 1a viewed from the back side, and FIGS. 1, 3, and 4 are the 1-I line and the m-
FIG. 3 is a cross-sectional view taken along the m-line and the IV-IV line.

As shown in FIGS. 1 to 3, an upper shutter plate 10 as a first shutter member and a lower shutter plate 11 as a second shutter member are provided in a portion facing the cassette insertion/ejection opening 3. It is being These upper shirt plates 1
0 and the lower shutter plate 11 are fitted with screws 14 and 13 on shafts 12 and 13 arranged along the opening edge of the cassette insertion/ejection port 3.
..., and the shafts 12 and 13 are attached to the left and right frames fixed to the back surface of the front casing 1a through screws 15, as shown in Fig. 2. 1
6.17 via bearings 18, 18, respectively, so as to be freely rotatable.

These upper shutter plate 10 and lower shutter plate 11 are rotated by shafts 12 and 1 by first shutter member rotating means 18 and second shutter member rotating means 19, which will be described later.
3 is rotated, the cassette insertion/ejection port 3 can be closed as shown by the solid line in FIG. 3, or opened as shown by the two-dot chain line.

Further, the first shutter member rotating means 18 has the following configuration.

That is, as shown in FIGS. 2 and 4, an upper driven gear 20 as a first driven gear is attached to one end of the shaft 12.
Further, a lower driven gear 21 as a second driven gear is attached to one end of the shaft 13, and these driven gears 20.21 are arranged to rotate in opposite directions via two intermediate gears 22.23. It has become. A driving force is transmitted via a gear drive mechanism 25 to a gear group 24 consisting of the intermediate gears 22 and 23 and the driven gears 20 and 21 to open and close the shutter plate 10 and 11.

Further, the number of teeth of the upper driven gear 20 is 20, the number of teeth of the lower driven gear 21 is 16, and the number of teeth of the intermediate gears 22 and 23 is 24.
The upper shirt plate 10 is set to 90, respectively.
When opened, the lower shirt plate 11 opens 112.5 degrees.

Note that the intermediate gears 22 and 23 are rotatably supported by shafts 26 and 27 protruding from the frame 16.

In addition, the gear drive mechanism 25 includes a lower driven gear 21 that interlocks with the lower shutter plate 11 as shown in FIGS. 4 and 5.
A fan-shaped drive gear 30 that meshes with the drive gear 30 and a rotatable lever 32 that interlocks with the drive gear 30 are provided.

Further, the driving gear 30 and the lever 32 are connected to the frame 16.
The lever 32 is rotatably supported by a support shaft 33 protruding from the lever 32, and the tip of the lever 32 is connected via a cotter pin 36 to an iron core 35 of a self-holding solenoid (keep solenoid) 34 serving as a lever operating means. ing. Also,
A core return spring 37 is provided on the pivot end side of the lever 32.

The movement of the lever 32 accompanying the operation of the solenoid 34, which is the drive source, is transmitted to the lower driven gear 21 via the drive gear 30.

Further, the upper shutter plate 10 and the lower shutter plate 11 are always in a state in which the shutter plate 10.11 is biased in the direction to close the cassette insertion/ejection opening 3 by the torsion coil springs 38, 38, as shown in FIG. There is.

Further, the second shutter member rotating means 19 is connected to a shaft 1 on the upper shutter plate 10 side, as shown in FIGS. 1 and 2.
2 through screws 40, 40, the lever 41 serves as a shutter rotation member and has its tip placed on the upper surface of the loading means 5, and extends to a position facing the cassette insertion/ejection opening 3 of the loading means 5. The displacement operation (raising operation) causes the upper shirt flap plate 10 to rotate in the opening direction, and simultaneously rotates the lower shirt flap plate 11, which is interlocked via the gear group 24, in the opening direction.

Next, the opening/closing operation of the shutter device 8 will be explained.

When the shutter plate 10.11 is opened, that is, when the disk cassette 2 is inserted or when the disk cassette 2 is ejected, the loading means 5 is first moved to the lower limit position (indicated by the solid line in FIG. 1) where information on the optical disk 6 can be processed. position) to the upper limit position facing the cassette insertion/ejection port 3 (the position shown by the solid line in FIG. 1).

This upward movement of the loading means 5 pushes up the lever 41 of the second shutter rotation means 19 and rotates the shaft 12 by a certain angle e1. Then, the upper shirt flap plate 10 attached to this shaft 12 is in a half-open state, and the lower shirt flap plate 11 attached to the shaft 13, which rotates in conjunction with the shaft 12 through the gear group 24, is also in a half-open state. Become.

On the other hand, as the shaft 13 rotates, the fan-shaped drive gear 30 of the first shutter member rotating means 18 also rotates by the rotation amount. Therefore, the stroke of the solenoid 34 that pulls the iron core 35 can be made smaller, and a solenoid that consumes less power can be used.

Next, from the half-open state as described above, open the solenoid 34.
By applying current to the iron core 35, the iron core 35 is pulled in the six directions of the arrows, and the lever 32 rotates counterclockwise (in the direction of arrow B) about the support shaft 33 in the state shown in FIG. (direction of arrow C).

The drive gear 30 rotates the lower driven gear 21 with which it meshes clockwise. The rotational force of the lower driven gear 21 rotates the lower intermediate gear 23 counterclockwise, the upper intermediate gear 22 clockwise, and the upper driven gear 20 counterclockwise. Transmitted sequentially.

At this time, as the lower driven gear 21 rotates clockwise, the integrated lower shutter plate 9 rotates clockwise to a position of approximately 112.5 degrees via the shaft 12, and the upper driven gear 20 and shaft 11 are rotated clockwise. Through this, the integral upper shirt flap plate 8 is rotated counterclockwise to a position of about 90 degrees, and the cassette insertion/ejection port 3 is opened as shown by the two-dot chain line in FIG.

Then, the disk cassette 2 is inserted or removed.

When this operation is completed, a reverse voltage is applied to the solenoid 34, the iron core 35 is released from the adsorbed state, and the upper shirt flap plate 10 and the lower shirt flap plate 11 are rotated by the force of the torsion coil springs 38, 38, and the cassette is Close the insertion/removal port 3.

At this time, a phase difference occurs between the upper shirt flap plate 10 and the lower shirt flap plate 11 by the gear ratio, and the upper shirt flap plate 10 reaches a position close to the cassette insertion/ejection opening 3 first, and the tip of the lower shirt flap plate 11 overlaps afterwards. There will be no collision.

Note that in the above embodiment, the opening angle of the lower shutter member is larger than the opening angle of the upper shutter member, but the invention is not limited to this. Further, although one lever 41 as a rotational force imparting member is provided at a position slightly off to one side from the center of the cassette insertion/ejection port 3, the present invention is not limited to this, and the position and number can be selected as appropriate.

In addition, it goes without saying that the present invention can be modified in various ways without departing from the gist thereof.

[Effects of the Invention] As explained above, according to the present invention, a simple shutter that uses a compact system in which two shutter members operate double-opening and can use a drive source with low power consumption is provided. This has the effect of being able to provide a device.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a cross-sectional view of the main parts, FIG. 2 is a front view of the shutter device seen from the back side of the front casing, and FIG. 4 is a sectional view taken along the line IV--IV of FIG. 2, FIG. 5 is an exploded perspective view of the main parts, and FIG. 6 is an information processing device to which the present invention is applied. FIG. 2 is a perspective view showing the appearance of a disk cassette used therein. 2... Cassette (disk cassette), 3... Cassette insertion and dislocation, 4... Information processing means, 5... Loading means, 6... Information storage disk (optical disk),
8... Shutter device, 10... ml shutter member (upper shutter plate), 11... Second shutter member (
(lower shutter plate), 18...first shutter member rotating means, 19...second shutter member rotating means, 24.
... Gear group, 25 ... Gear drive mechanism, 34 ... Drive source (solenoid), 41 ... Shutter rotation member (lever). Applicant's agent Patent attorney Takehiko Suzue Figure 1 Figure 3 Figure 5

Claims (1)

[Claims] (1) A shutter device for opening and closing a cassette insertion/ejection opening of an information processing apparatus that incorporates an information processing means and a loading means and processes information on an information storage medium housed in a cassette, the shutter device opening/closing the cassette insertion/ejection opening. The first and second shutter members provided nearby to open and close the cassette insertion/ejection opening, a gear group for interlocking these first and second shutter members, and a gear drive mechanism for providing a driving force to the gear group are provided. a shutter member rotating means for rotating the first and second shutter members; and a first shutter member attached to the first shutter member side for displacing the first shutter member to a position facing the cassette insertion/ejection opening of the loading means. a shutter rotating member that rotates the first and second shutter members in an opening direction by transmitting a signal to the shutter device.