JPH08339673A - Dust cover and electronic equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To simplify the dust-proof structure of the FD unit provided in an electronic device, and improve the maintainability and device reliability of the electronic device. [Structure] A case which covers only the FD unit provided in the electronic device, a dust-proof plate that closes the cable outlet, and a dust-proof cover are used for complete sealing. The structure of the dust cover has a hinge mechanism that opens and closes by rotating around the shaft of a pair of pins on both sides, and the outer peripheral surface of the edge along the shaft of the pin is a cylindrical surface centering on the shaft of the pin to prevent dust. Even when the cover rotates, it is almost in contact with the case surface. The pair of pins are provided at the tip of an elastic arm, and the tip has a hemispherical shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is an information processing apparatus such as a dustproof cover which is openably and closably attached to a housing and OA equipment and FA equipment, and which is provided with an FD unit inside and is used in a dusty environment. Regarding electronic devices.

[0002]

2. Description of the Related Art Electronic devices such as those described above are widely used not only in offices but also in shops, restaurants and other factories, and are widely used in offices. Due to the nature of dust, there are some things that cannot be avoided, and measures against dust are indispensable.
Among them, an FD is used as a storage medium in an FD unit used as an auxiliary storage device in this type of electronic device. However, dust enters the inside of the FD unit and causes a gap between the head and the FD inside the FD unit. If dust adheres to the
Failures such as FD reading error and FD writing error may occur, and in the worst case, all stored data in the FD may be damaged.

Most of the troubles caused by the intrusion of dust into the FD unit are in an environment where the dust is relatively large. In other words, the dust intrusion route is used when the FD that has been left on a desk or the like and has dust attached is directly inserted into the FD unit, or when the FD unit is operating, air inflow from the FD attachment / detachment port causes dust in the air to enter the FD unit. There were cases such as inhalation into the interior. Due to the above-mentioned countermeasures, the operator has become accustomed to handling FDs, so that the FDs are rarely left on a desk.

The types of dust in the air in the installation environment at issue include cotton dust, fibers, skin, oil smoke, carbon (including soot), sand, red clay (in the case of Kanto loam layer), waste gas, etc. There is.

A lid with a return spring is provided at the attachment / detachment port of the FD of the FD unit. When the FD is inserted, the lid is opened by the pressing pressure of the FD, and when the FD is pulled out, the lid is closed by the return spring. It prevented the invasion of dust to some extent. However, due to the installation environment, in a dusty place, dust invades through the gap between the FD and the lid, so there was not a sufficient dustproof effect.

Since it is often necessary to frequently remove and replace the FD in the electronic device as described above, the attaching / detaching port of the FD is usually provided near the operation surface of the electronic device. However, in that case, an erroneous operation such as accidentally touching the FD when scanning an electronic device is avoided, and an openable cover is often provided on the front surface of the FD attachment / detachment as a help to the above dust-proof measures ( (See Kaihei 4-279457).

However, since such an opening / closing cover cannot be completely sealed due to its structure, the applicant has adopted the dustproof cover shown in FIG. 6 as a countermeasure (for example, store controller NEC S1 for chain restaurants).
083).

The electronic device shown in FIG. 6 includes an FD unit 1,
A dust filter 9, a fan 10, an FD attachment / detachment port 5, a panel 6, a dust cover 7, a dust sponge 8 and the like are provided.

The panel 6 is attached to the front side of the housing body 11, and the pins 12 provided on the panel 6 are provided on the front surface of the panel 6.
A dust cover 7 that can be opened and closed by a hinge mechanism composed of an engaging portion 13 and an engaging portion 13 is provided to prevent dust from entering through the FD attachment / detachment port 5 of the FD unit 1 and a dust filter at an intake port for internal cooling of an electronic device. 9 equipped with FD for external dust
The structure is such that it does not enter the inside of the electronic device provided with the unit 1.

Further, the dust cover 7 has a hinge mechanism at its opening and closing portion and a latch 7b for holding the dust cover 7 when it is closed, so that dust entering through the gap between the dust cover 7 and the panel 6 is FD unit. In order to prevent the dust-proof cover 7 from entering the inside, a quadrangular ring-shaped dust-proof sponge 8 is attached inside the dust-proof cover 7.

It should be noted that the engaging portion 13 of the hinge portion on the dustproof cover 7 side is prevented from damaging the hinge mechanism or the panel 6 when an excessive external force is applied to the hinge mechanism of the dustproof cover 7 when the FD is attached or detached. Panel shape 6
The dust cover 7 is detached from the pin 12 of the above.

[0012]

In the above-mentioned conventional example, the dust-proof sponge 8 is attached to the dust-proof cover 7 provided in front of the FD attachment / detachment port to allow dust to enter the FD unit 1 through the FD attachment / detachment port 15. In addition to the above, the dustproof filter 9 is also provided at the cooling air intake port inside the electronic device to prevent dust from entering the electronic device, and thus to prevent dust from entering the FD unit 1. It is designed to be completely dustproof.

However, when the dustproof filter 9 is used for a long time, the dustproof filter 9 adsorbs dust in the air and becomes clogged, so that it needs to be replaced regularly. If this is not done, the intake port may be completely blocked due to clogging of the dustproof filter 9, and the internal temperature of the device may rise, causing a device failure.

Further, in the prior art, a dustproof sponge is required in addition to the dustproof cover itself as a member structure of the dustproof cover 7, which is disadvantageous in the cost of the apparatus.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electronic device and a dustproof cover which solve the above drawbacks, have a simple structure, are easy to maintain, and can enhance the reliability of the device.

[0016]

The electronic equipment of the present invention is a floppy disk unit (hereinafter referred to as FD unit).
Floppy disk (hereinafter referred to as F
(D) A case that covers the periphery of the FD unit except the attachment / detachment port and the cable outlet, a dustproof plate that closes the gap portion of the cable outlet, and a dustproof that can be opened and closed to seal the FD attachment / detachment port from the outside when closed. And including a cover.

In the dustproof cover of the present invention, a pair of pins having a spherical shape at the tips of the ends of a pair of elastic arms provided on both sides and aligned with each other are provided in the housing. Slidably fitted to the shaft and rotated about the shaft of the pair of pins to open and close with respect to the housing, and the outer peripheral surfaces of the edges along the shaft of the pair of pins are the surface of the shaft and the surface of the housing. It is characterized in that the outer periphery fits into the concave portion provided in the housing when closed with a cylindrical surface whose radius is the distance from.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

1 to 3 are perspective views of an electronic apparatus according to an embodiment of the present invention (shown in a state where the upper cover 2 and the lower bag 3 are disassembled with the dustproof cover 7 removed), and a portion of the dustproof cover 7. FIG. 3 is a cross-sectional view and a front view of a portion of a dust cover 7.

The FD units 1 and F are provided inside the housing body 11.
Upper cover 2 and lower cover 3 that cover the D unit 1
Is provided, the gap formed by the space other than the cable at the cable outlet of the FD unit 3 is closed by the dustproof plate 4, and the panel 6 having the FD attachment / detachment port 5 is attached to the front side of the housing body 11. An openable dust cover 7 for covering the FD attachment / detachment port 5 and a latch 7b for holding the dust cover 7 in a closed state (the latch 7 on the dust cover 7 side)
d) is provided. When the dustproof cover 7 is closed, the outer periphery thereof is fitted into a recess provided in the FD attachment / detachment port 5 of the panel 6.

FIG. 2 shows a state in which the dustproof cover 7 is closed. In this state, dust floating outside the electronic equipment is blocked by the dustproof cover 7 or the like to prevent the dust from entering the FD unit 1. There is. That is, during the operation of the FD unit 1, there is no inflow or inflow of air in the FD unit 1. During operation of the FD unit 1, FD
Cooling of the heat generated by the unit 1 itself sufficiently functions mainly by radiating heat from the surfaces of the upper cover 2 and the lower cover 7.

Next, the opening / closing structure of the dustproof cover 7 will be described.

The dust-proof cover 7 has an upper cover 14 which is in the same plane as the upper surface of the panel 6 and a front cover 15 which is in the same plane as the front surface of the panel 6 in a closed state, and the cross section thereof is substantially inverted L
It is a character shape. Further, the base portions are fixed to the front cover 14 on both sides of the dustproof cover 7, and elastic arms 7c having pink a at the tip are provided.

The pair of pins 7a on both sides of the dustproof cover 7 are aligned with each other and slidably fitted in the receiving holes 6a provided in the panel 6, respectively, and the dustproof cover 7 is centered on the axis 0 of the pin 7a. To rotate and open and close.

The tip of the pin 7a has a spherical shape. When the tip of the pin 7a is overloaded in the direction perpendicular to the axial direction, the elasticity of the arm 7c allows the overload to escape. When the dustproof cover 7 is fully opened and further opened with an excessive force, bending stress is applied to the pin 7a, so that the arm 7c is elastically deformed and twisted, and the pin 7a is disengaged from the receiving hole 6a of the panel 6. That is, the dust-proof cover 7 and the panel 6 are detached from the panel 6 without being damaged.

4 and 5, how the pin 7a is applied to the pin 7a will be described. When a force is applied to further open the fully opened dustproof cover 7, a force of + p1 perpendicular to the central axis is applied to the pin 7a. Taken from the panel 6 -p2 in the opposite direction
4 and 5, a clockwise rotation moment is generated in the pin 7a, the arm 7c is twisted, and the pin 7a tilts as shown in FIG. 5 so that the spherical surface at the tip of the pin 7a is the receiving hole 6a of the panel 6. Get out of. That is, the dust-proof cover 7 is detached from the panel 6 without being damaged. Dust cover 7
When the arm is disengaged, the torsional stress of the arm 7C is set within the elastic limit of the material, so that the member is not damaged and can be repeatedly used.

As shown in FIG. 2, the outer periphery of the rear edge of the upper cover 14 of the dustproof cover 7 is in the shape of a cylindrical surface having a radius R centered on the axis 0, and the radius R is defined by the axis 0 and the panel 6. Due to the distance, there is almost no gap between the dustproof cover 7 and the panel 6 when the dustproof cover 7 is closed, and moreover, there is always a gap between the rear edge of the dustproof cover 7 and the panel 6 even when the dustproof cover 7 is opened and closed. It has no structure.

Male and female latches 7b and 7d are integrated on the dust cover 7 side and the panel 6 side, respectively, and they are engaged with each other to hold the dust cover 7 in a closed state. Has become.

The dustproof cover of the present invention is provided with a return spring that constantly applies a force in the closing direction, and a person manually opens the dustproof cover, but if the hand is released, the dustproof cover is closed by the force of the return spring. If so, the latch 7b is not necessary.

[0030]

As described above, in the electronic device of the present invention, by sealing the FD unit by itself, only the FD unit, which is vulnerable to dust, can be dust-proofed without dust-proofing the entire electronic device. Because it can be deleted
There is an effect that maintenance such as periodical replacement is not required, maintainability can be improved, and cost reduction and reliability of electronic equipment can be improved. That is, there is an effect that the parts can be simplified and the running cost can be reduced while ensuring the dustproof property of the FD unit.

In the dustproof cover of the present invention, when the outer periphery of the edges along the axis of the pair of pins, which is the center of opening and closing, is a cylindrical surface whose radius is the distance between the axis and the housing surface, when closed, The case can be completely sealed, the dust-proof sponge used conventionally is unnecessary, the number of necessary parts is reduced, the cost is reduced, the production lead time of members is shortened, and the product quality is stable.

Further, when the dustproof cover is opened and closed, the elastic cover and the pin having a spherical tip are used to open the dustproof cover, and even if the dustproof cover is opened with an excessive force, the dustproof cover can be removed from the housing without damaging the product. This is effective in improving the ease of assembly, the maintainability such as the replaceability and the cleanability, and the reliability of the device.

[Brief description of drawings]

FIG. 1 is a perspective view showing a part of an electronic device according to an embodiment of the present invention in an exploded manner.

FIG. 2 is a sectional view of a portion of a dust cover 7 and an FD unit 1 of the embodiment shown in FIG.

FIG. 3 is a front view of a portion of a dust cover 7 of the embodiment shown in FIG.

FIG. 4 is a cross-sectional view showing a pin 7a and its periphery of the embodiment shown in FIG.

5 is a cross-sectional view showing the pin 7a and its surroundings when an excessive force in the opening direction is applied to the dustproof cover 7 in the embodiment shown in FIG.

6 (A) and 6 (B) are respectively a perspective view showing a part of a conventional electronic device in an exploded manner and a cross-sectional view of a portion of a dustproof cover 7 and an FD unit 1.

[Explanation of symbols]

 1 FD unit 2 Upper cover 3 Lower cover 4 Dustproof plate 5 FD attachment / detachment port 6 Panel 6a Receiving hole 7 Dustproof cover 7a Pin 7b Latch 7c Arm 7d Latch 8 Dustproof sponge 9 Dustproof filter 10 Fan 11 Case body

Claims (2)

[Claims] 1. A floppy disk unit (hereinafter FD
In an electronic device including a unit, a case that covers the periphery of the FD unit except for a floppy disk (hereinafter referred to as FD) attachment / detachment port and a cable outlet, a dustproof plate that closes a gap portion of the cable outlet, and a dustproof plate when closed. An electronic device, comprising: an openable / closable dustproof cover for sealing the FD attachment / detachment port from the outside. 2. A pair of pins, which are spherical in shape and have linear tips at the tips of a pair of elastic arms provided on both sides, are slidable in receiving holes provided in the housing. It is fitted and rotated about the shafts of the pair of pins to be opened and closed with respect to the housing, and the outer peripheral surfaces of the edges along the shafts of the pair of pins have a radius between the shaft and the surface of the housing. The dust-proof cover is characterized in that the outer periphery of the dust-proof cover fits into a recess provided in the casing when closed.