JPH01118283A - Shutter device - Google Patents

Abstract

PURPOSE:To surely perform the opening/closing operation of an aperture part by providing a shutter member turning means which turns first and second shutter members which open and close the aperture part by a French door operation in a state where a turning phase is different. CONSTITUTION:In an upper shutter plate 8 and a lower shutter plate 9, shafts 11 and 12 are turned via the shutter member turning means 10, and the aperture part 3 is closed, then, released. In the shutter member turning means 10, an upper driven gear 20 is mounted at one end of the shaft 11 and a lower driven gear 21 is mounted at one end of the shaft 12 and the driven gears 20 and 21 rotate reversely with each other via intermediate gears 22 and 23. By transmitting a driving force to a gear system 24 via a gear driving mechanism 25, the lower shutter plate 9 is opened at 112.5 deg. when the upper shutter plate 8 is opened at 90 deg. based on a gear ratio and when they are closed, a phase difference by a share of gear ratio is generated, thereby, the tip of the lower shutter plate 9 is always superposed on the upper shutter plate 8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) 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 that handles, for example, an optical disk.

(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 cartridge containing an optical disk, and foreign matter such as dust is 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 devices employ a system in which two shutter members are rotated.

Conventionally, in this type of shutter device that rotates two shutter members, the two shutter members are linked via a gear group so that the two shutter members open in the same phase. When closed, the tips of the two shutter members overlap to form a seal.

(Problem to be Solved by the Invention) As described above, in the conventional shutter device, since the two shutter members operate double-opening in the same phase state, when closing, the tips of the two shutter members collide and close. There have been cases in which problems have occurred where the images are not aligned or the overlapping direction is reversed.

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 ensuring reliable opening/closing operations of openings such as cartridge insertion/ejection openings. The purpose of this invention is to provide a highly reliable shutter device that can be used in various applications.

[Structure of the Invention (Means for Solving Problems)] In order to solve the above-mentioned problems, the present invention provides a first opening whose leading ends overlap when the opening is opened and closed by a double-folding action. a second shutter member; The second shutter member is configured to include a shutter member rotating means for rotating the second shutter member in different rotational phases.

(Function) In other words, in the present invention, since the two shutter members that operate to open double doors have different rotational phases, it is possible to prevent the tips of the two shutter members from colliding with each other when closing the shutter members or from overlapping them in the opposite direction. , enabling highly reliable opening and closing operations.

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

FIG. 5 shows the external appearance of an information processing device incorporating the shutter device of the present invention and a cartridge used therein.

In the figure, reference numeral 1 denotes a main body of an information processing device.A cartridge insertion/removal port 3 as an opening for inserting and removing a cartridge 2 is formed in the front housing portion 1a of the main body 1 of the information processing device. is the information processing mechanism section 4. The loading mechanism 5 and a control mechanism section (not shown) are accommodated therein.

And said Kartli? Insert/remove cartridge 2 into slot 3.
When the cartridge 2 is inserted, the loading mechanism 5 automatically takes the cartridge 2 into a predetermined position. At this time, the front case 2a and rear case 2b of the cartridge 2
is automatically opened and the optical disc 6 in the cartridge 2 is opened.
is mounted on the information processing mechanism section 4 with a portion thereof exposed. Note that the configuration of such an information processing device is well known, so a detailed explanation will be omitted.

In addition, a front housing portion 1 in which a cartridge insertion/ejection port 3 is formed is provided.
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 housing portion 1a, there are
As shown in the figure, a shutter device 7 for opening and closing the cartridge insertion/ejection opening 3 is provided.

FIG. 1 is a view of the front casing portion 1a viewed from the back side, and FIGS. 2 and 3 are cross-sectional views taken along the lines ■-■ and ■-■ in FIG. 1.

As shown in FIGS. 1 and 2, an upper shutter plate 8 as a first shutter member and a lower shutter plate 9 as a second shutter member are provided in a portion facing the cartridge insertion/ejection opening 3. ing. The upper shirt plate 8 and the lower shirt plate 9 are attached to shafts 11 and 12 provided along the opening edge of the cartridge insertion/ejection port 3 with screws 13 and 13.
..., and the shaft unit 1゜12 is attached to the left and right sides which are fixed to the back surface of the front housing part 1a through screws 14, as shown in Fig. 1. frame 1
5.16 via bearings 17, 17, respectively, so as to be freely rotatable.

These upper shutter plate 8 and lower shutter plate 9 are connected to the shaft 1 through shutter member rotation means 10, which will be described later.
By rotating 1 and 12, the cartridge insertion/ejection opening 3 can be closed as shown by the solid line in FIG. 2 or opened as shown by the two-dot chain line.

Further, the shutter member rotating means 10 for rotating the upper shutter plate 8 and the lower shutter plate 9, which are provided in such a manner that there is no rotation, has the following configuration.

That is, as shown in FIGS. 1 and 3, an upper driven gear 20 as a first driven gear is attached to one end of the shaft 11.
Further, a lower driven gear 21 as a second driven gear is attached to one end of the shaft 12, and these driven gears 20.21 are arranged to rotate in opposite directions through two intermediate gears 22.23. It has become. A driving force is transmitted via a gear drive mechanism 25 to a gear system 24 consisting of the intermediate gears 22 and 23 and the driven gears 20 and 21 to open and close the shutter plates 8 and 9.

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.
, respectively, so that when the upper shirt flap plate 8 opens 90 degrees, the lower shirt flap plate 9 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 15.

Further, as shown in FIG. 4, the gear drive mechanism 25 includes a fan-shaped drive gear 30 that meshes with the lower driven gear 21 that is interlocked with the lower shutter plate 9, and a two-way clutch 31 that will be described later with this drive gear 30. It is provided with a lever 32 as a rotating member that can rotate in conjunction with each other.

Further, the driving gear 30 and the lever 32 are connected to the frame 15.
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 to a self-holding solenoid (keep solenoid) 34 as a rotating member operating means.
The iron core 35 and the split pin 36 are connected to each other. Further, the core 35 is provided with a core return spring 37.

The movement of the lever 32 accompanying the operation of the solenoid 34 is transmitted to the lower driven gear 21 via the one-way clutch 31 and the drive gear 30.

Further, the two-way clutch 31 includes a protrusion 32a formed on the boss portion of the lever 32 and a protrusion 30a formed on the boss portion of the drive gear 30.

Further, the upper shutter plate 8 and the lower shutter plate 9 are always in a state in which the shutter plates 8.9 are biased in the direction to close the cartridge insertion/ejection opening 3 by torsion coil springs 38 and 38, as shown in FIG. There is.

By applying current to the solenoid 34, the iron core 35 is pulled in the direction of arrow A, and the lever 32 rotates counterclockwise (in the direction of arrow B) around the support shaft 33 in the state shown in FIG.
At the same time, a protrusion 3 formed on the boss portion of the lever 32
2a is a protrusion 30a formed on the boss portion of the drive gear 30;
The driving gear 30 is rotated counterclockwise (in the 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 approximately 112.5 degrees clockwise via the lever 2, and the upper driven gear 21
The integral upper shirt shirt plate 8 is rotated about 90 degrees counterclockwise via the shaft 11 to open the cartridge insertion/ejection opening 3 as shown by the two-dot chain line in FIG.

Since the solenoid 34 is a self-holding type solenoid, when the iron core 35 touches the bottom of the solenoid cylinder, it is attracted even without the flow of current, so that it can be attracted simply by flowing the current at the instant of pulling.

This allows the power consumption of the device to be reduced.

Further, since the core 35 is provided with a core return spring 37, the core 35 can be released from the sucked state by instantaneously applying a reverse voltage to the solenoid 34.

In addition, in the case of this device, as described above, the upper driven gear 2
0 has 20 teeth, the lower driven gear 21 has 16 teeth, and the intermediate gears 22 and 23 have 24 teeth.

With this configuration, the upper shirt shirt plate 8 has 9
When opened 00 degrees, the lower shirt plate 9 opens 112.5 degrees,
In addition, when closing, a phase difference occurs by the gear ratio of each other, and the upper shirt flap plate 8 reaches a position close to the cartridge insertion/ejection opening 3 first, and the lower shirt flap plate 9 does not intersect afterwards, but always the upper shirt flap. The tip of the lower shirt plate 9 comes to overlap with the plate 8.

Further, as shown in FIG. 4, the protrusion 32a of the lever 32
When the drive gear 30 rotates counterclockwise, the drive gear 30
Since it is separated from the protrusion 30a on the side, even if the drive gear 30 side rotates counterclockwise, the lever 32 will not rotate counterclockwise. Conversely, when the lever 32 side rotates counterclockwise, the protrusion 32a on the lever 32 side hits the protrusion 30H of the drive gear 30, causing the drive gear 30 to rotate.
The shutter plates 8 and 9 can be opened by rotating them counterclockwise.

According to the above configuration, even if the cartridge 2 is inserted from outside the device while hitting the shutter plates 8 and 9 and pushing them apart, the rotational force for opening the shutter plates 8 and 9 is not transmitted to the lever 32 and is not transmitted to the iron core 35 of the solenoid 34. Even if the cartridge 2 is pulled out midway without being pushed down, the shutters 8 and 9 can be closed by the biasing force of the upper and lower torsion coil springs 38.

By constructing the one-way clutch 31 between the drive gear 30 and the lever 32 that interlocks with the iron core 35 of the solenoid 34, a self-holding type keep solenoid can be used, and by passing a short pulse current, Since the shutter plate 8.9 can be opened and closed, the solenoid 34 does not cause a temperature rise. Also, one-way clutch 3
1, even if the cartridge 2 is inserted halfway and pulled out halfway, the iron core 35 is not attracted to the solenoid 34, so the shutter plate 8.9 can be closed.

In the above-mentioned embodiment, the shutter device of the present invention was described as being provided in the cartridge insertion/ejection opening of an information processing device using an optical disk as an information storage medium, but the present invention is not limited to this, and can be applied to other openings. It may be something that opens and closes.

Further, although the opening angle of the lower shutter member is made larger than the opening angle of the upper shutter member, the opposite may be used.

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, although it is a compact system in which two shutter members are operated double-opening, there is no possibility that the tips of the two shutter members collide with each other when closing. It is possible to provide a shutter device that can perform highly reliable opening and closing operations without the overlapping direction being reversed.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a front view of the shutter device seen from the back side of the front casing, FIG. 2 is a sectional view taken along the line ■-■ in FIG. Figure 3 is the ■− of Figure 1.
FIG. 4 is an exploded perspective view of essential parts, and FIG. 5 is a perspective view showing the external appearance of an information processing apparatus to which the present invention is applied and a cartridge used therein. 3...Cartridge insertion/removal port (opening), 7...Shutter device, 8...Upper shutter plate (first shutter member), 9...Lower shutter plate (second shutter member)
, 10... Shutter member rotating means, 20... Upper driven gear (first driven gear), 21... Lower driven gear (
second driven gear), 22.23... intermediate gear, 24.
... Gear system, 25 ... Gear drive mechanism, 30 ... Drive gear, 31 ... One-way clutch, 32 ... Lever (
rotating member), 34... solenoid (rotating member operating means), 37.38... spring (biasing body). Applicant's agent Patent attorney Takehiko Suzue Figure 2 Figure 4

Claims (5)

[Claims] (1) first and second shutter members whose tips overlap when the opening is opened and closed by a double-door opening operation;
A shutter device comprising: shutter member rotating means for rotating the first and second shutter members in different rotational phases. (2) The shutter member rotating means includes a first driven gear that interlocks with the first shutter member and a second driven gear that interlocks with the second shutter member and has a different number of teeth than the first driven gear. , a plurality of intermediate gears that mesh with the first and second driven gears having different numbers of teeth and are interlocked so as to rotate in opposite directions, and these intermediate gears and the first and second driven gears.
The driving force is transmitted to the gear system consisting of the driven gear of the first
2. The shutter device according to claim 1, further comprising: a gear drive mechanism for opening and closing the second shutter member. (3) The gear drive mechanism includes a drive gear that meshes with one of the gears of a gear system that is interlocked with the first and second shutter members, and a rotatable rotary shaft that is interlocked with the drive gear via a one-way clutch. a moving member; a biasing body that constantly urges the rotating member to rotate in a direction in which the one-way clutch is not engaged;
It has a rotating member operating means for rotationally displacing the rotating member against the urging force of the urging body, and the movement of the rotating member accompanying the operation of the rotating member operating means is controlled by the one-way clutch and the rotating member. 3. The shutter device according to claim 2, wherein the shutter device is configured to transmit information to a gear system via a drive gear. (4) The shutter device according to claim 3, wherein the rotating member operating means is a self-holding solenoid that can hold itself even in a non-energized state once it has been operated. (5) A patent characterized in that the first and second shutter members open and close an opening provided in the horizontal direction, and the opening angle of one shutter member is larger than the opening angle of the other shutter member. A shutter device according to claim 1.