JPH01287892A - Shutter device - Google Patents

Abstract

PURPOSE:To use a driving source with small energy consumption by using a displacement action up to a position facing to the cartridge inserting removing port of a loading means as the rotation action in the direction to open a shutter member. CONSTITUTION:By the advancing action of a loading means, a lever 41 of a second shutter turning means 19 is pushed up by a cartridge 2 and a shaft 12 is turned only by a certain angle theta1. An upper part shutter plate 10 fitted at the shaft 12 becomes the half open condition, and a lower part shutter plate 11 fitted at a shaft 13 to interlock and turn through a gear group 24 of the shaft 12 also becomes the half open condition. On the other hand, accompanying the turning of the shaft 13, a fan type driving gear 30 of a first shutter member turning means 18 is also rotated for the rotation ratio. Thus, the stroke to draw an iron core 35 of a solenoid 34 for it can be made smaller and the solenoid with the small energy consumption can be used.

Description

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

(Prior Art) Usually, an information processing device using an optical disk as an information storage medium is provided with a shutter device that opens and closes an insertion/ejection opening for inserting/ejecting a disk cartridge containing an optical disk, and foreign particles such as dust are removed from the insertion/ejection opening. 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 have no choice but to use large and power-consuming solenoid to generate the stroke and force necessary for the two shutter members to double-open. This hinders miniaturization and lower power consumption.

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 information processing for an information storage medium housed in a cartridge, which incorporates an information processing means and a loading means. A shutter device for opening and closing a cartridge insertion/ejection opening of an information processing apparatus that performs a first shutter operation, the first shutter device being provided near the cartridge insertion/ejection opening and opening/closing the cartridge insertion/ejection opening. a second shutter member; 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 a second shutter member; and a shutter member rotating means attached to the first shutter member side, the distal end side of which contacts the cartridge held by the loading means and faces the cartridge insertion/ejection opening of the loading means. By transmitting the displacement movement to the first shutter member to the first position. Force when rotating the second shutter member in the opening direction and moving it to a position facing the cartridge insertion/ejection opening of the loading means = length of the portion sliding on the trifuji is approximately equal to the amount of displacement of the cartridge held by the loading means and a shutter rotating member set at the same distance.

(Function) That is, by having the above configuration, the present invention utilizes the displacement movement of the loading means to a position opposite to the insertion and dislocation of the cartridge as a rotational movement in the direction of opening the shutter member via the shutter rotation member. The shutter rotation means, which requires driving force, only needs to perform the remaining rotation after the rotation operation accompanying the displacement operation of the loading means.
It becomes possible to use an inexpensive, compact drive source with low power consumption. Further, the length of the portion of the shutter rotating member that slides on the cartridge when moving to a position facing the cartridge insertion/ejection opening of the loading means is set to be approximately the same distance as the displacement of the cartridge held by the loading means. Therefore, the shutter can be rotated by the maximum angle depending on the distance the cartridge moves, and the range of rotation by the drive source can be made smaller, allowing for smaller size and lower power consumption.

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

FIG. 6 shows the appearance of an information processing device 1 incorporating the shutter device of the present invention and a disk cartridge 2 as a cartridge used therein. A cartridge insertion/removal port 3 is formed in the information processing device 1, and an information processing means 4. A loading means (cartridge loading/mounting mechanism) 5 and a control mechanism section (not shown) are accommodated therein.

When the disk cartridge 2 is inserted into the cartridge insertion/ejection opening 3, the disk cartridge 2 is automatically taken in to a predetermined position by the loading means 5. At this time, the front case 2a and rear case 2b of the disk cartridge 2 are automatically opened, and a part of the optical disk 6 as an information storage disk inside the disk cartridge 2 is 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.

In addition, the front housing portion 1 has a cartridge insertion/ejection port 3 formed therein.
A also serves as a control panel, and an operation/display means 7 is provided on the front surface of the control panel.

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 cartridge 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 I-1 line and 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 cartridge insertion/ejection opening 3. It is being The upper shirt flap plate 10 and the lower shirt flap plate 11 are attached to a shaft 12.13 disposed along the opening edge of the cartridge insertion/ejection port 3 via screws 14. , the shafts 12 and 13 are connected to the front housing part 1 as shown in FIG.
They are rotatably attached to left and right frames 16 and 17 fixed to the back surface of the frame a through screws 15 through bearings 18, 18, respectively.

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 cartridge insertion/ejection opening 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 that project 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 3o 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, and its tip 4
1a is placed on the upper surface of the cartridge 2 held by the loading means 5. A lever 4 serves as a shutter rotation member.
1, which rotates the upper shirt flap 10 in the opening direction by a displacement operation (raising operation) of the loading means 5 to a position facing the cartridge insertion/ejection opening 3, and is interlocked via a gear group 24. 11 are simultaneously rotated in the opening direction. The lever 41 has a substantially L-shape, and the cartridge 2 is moved to a position facing the cartridge insertion/ejection opening 3 of the loading means 5.
The length il of the portion that comes into sliding contact with the top is the amount of vertical displacement of the cartridge 2 held by the loading means 5. are set at approximately the same distance. The shutters 10 and 11 can be rotated by the maximum angle depending on the distance that the cartridge 2 moves.

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

When the shutter plate 10.11 is automatically opened, that is, when the cartridge 2 is ejected, the loading means 5 holding the cartridge 2 is first moved to the lower limit position (the position shown by the solid line in FIG. 1) where information on the optical disc 6 can be processed. 1 to the upper limit position facing the cartridge insertion/ejection opening 3 (the position indicated by the two-dot chain line in FIG. 1).

Due to this upward movement of the loading means 5, the lever 41 of the second shutter rotation means 19 is pushed up by the cartridge 2, and the shaft 12 is rotated by a certain angle e1. Then, the upper shirt flap plate 10 attached to the 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 in this direction.

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 direction of arrow A, 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 cartridge insertion/ejection opening 3 is opened as shown by the two-dot chain line in FIG.

Then, the cartridge 2 is removed, and when the removal operation is completed, a reverse voltage is applied to the solenoid 34 to release the iron core 35 from the adsorbed state, and the upper shirt flap plate 10 and the lower shirt flap plate 11 are pulled together by the torsion coil spring 38. ，
It rotates with a force of 38 and closes the cartridge insertion/ejection opening 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.

In addition, in the above-mentioned embodiment, the lower shutter member 1
Although the opening angle of 1 is larger than the opening angle of the upper shutter member 10, it is not limited thereto.

Further, although one lever 41 as a shutter rotating member is provided at a position slightly off to one side from the center of the cartridge insertion/ejection opening 3, the present invention is not limited to this, and the position and number can be selected as appropriate.

Further, as shown in FIG. 7, by attaching the lever 41 to a third shaft 50 horizontally suspended above the shaft 12, a larger rotation angle can be obtained as the cartridge 2 moves. At the same time, the locking piece 41a integrally formed on the lever 41 is engaged with the connecting plate 51 that moves integrally with the upper shirt shirt plate 10. and,
The lifting operation of the cartridge 2 is controlled by lever 41. Locking piece 41a
, transmitted to the upper shirt plate 10 via the connecting plate 51 in sequence,
Furthermore, by transmitting the power to the lower shutter plate 11 which is interlocked via the gear group 20, 22, 23.degree. 21, a structure may be constructed in which no drive source such as a solenoid is required at all.

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]

1 to 6 show an embodiment of the present invention,
Figure 1 is a cross-sectional view of the main parts, Figure 2 is a front view of the shutter device seen from the back side of the front casing, and Figure 3 is from ■ to ■ in Figure 2.
4 is a sectional view taken along line IV-IV in 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 and its use. FIG. 7 is a perspective view showing the external appearance of a disc cartridge, and FIG. 7 is a sectional view of main parts showing another embodiment of the present invention. 2...Cartridge (disk cartridge), 3.
...Cassette insertion/ejection port, 4...Information processing means, 5...
loading means, 6... information storage disk (optical disk), 8... shutter device, 10... first shutter member (upper shutter plate), 11... second shutter member;
Ivy member (lower shirt plate), 18...first shaft
Ivy member rotating means, 19... Second shaft ivy member rotating means, 24... Gear group, 25... Gear drive mechanism,
3410. Drive source (solenoid), 41...Shutter rotation member (lever). Applicant's agent Patent attorney Takehiko Suzue Figure 1 Figure 3 B Figure 5

Claims (1)

[Claims] (1) A shutter device for opening and closing a cartridge 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 cartridge, the shutter device opening/closing the cartridge insertion/ejection opening. A first and a second cartridge are provided nearby to open and close the cartridge insertion/ejection opening.
a shutter member, a gear group that interlocks the first and second shutter members, and a gear drive mechanism that provides a driving force to the gear group, and a shutter member rotation that rotates the first and second shutter members. and a first shutter member attached to the first shutter member side, the distal end side of which contacts the cartridge held by the loading means and moves to a position where it faces the cartridge insertion/ejection opening of the loading means.
The length of the portion that slides on the cartridge when the first and second shutter members are rotated in the opening direction by transmitting the signal to the shutter member of the loading means and moves to a position facing the cartridge insertion/ejection opening of the loading means is the loading means. 1. A shutter device comprising: a shutter rotating member set at substantially the same distance as the displacement of a cartridge held by the shutter device.