JPH0991944A - Front panel removal prevention mechanism in floppy disk drive - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a front panel removal prevention mechanism for preventing a front panel from being removed easily by providing a hook part in the vertical and lateral directions of the front panel of a floppy disk drive, etc. SOLUTION: A hook part 5 and an engagement plate part 6 are provided at a front panel 4 and an engagement click is formed at the tip of the hook part 5 and an engagement hole 7 is formed at the engagement plate part 6. An engagement click 3 is formed at the inner left and right of a lower cover body 10 and an engagement hole 8 is formed at both sides of an upper cover body 2. By engaging the engagement click to the engagement hole 8 and at the same time engaging the engagement hole 7 to the engagement click 3, the front panel 4 is mounted to the upper cover body 2, the lower cover body 10, and a frame unit 1, thus preventing the front panel from being removed easily even if both sides of the cover body deflects.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a front panel detachment prevention in a floppy disk drive for preventing the front panel of the 3.5-inch floppy disk drive from coming off from the frame unit when the front panel is attached to the frame unit. It is related to the mechanism.

[0002]

2. Description of the Related Art A front panel detachment prevention mechanism in a conventional 3.5-inch floppy disk drive (hereinafter referred to as FDD) will be described with reference to FIGS. FIG. 5 shows an embodiment of a magnetic head protection structure of a conventional magnetic recording / reproducing apparatus. FIG. 6 is a side view showing the front panel detachment preventing mechanism portion of FIG. In FIG. 5, the magnetic recording / reproducing apparatus has a plate-shaped frame unit 21 and a thin plate-shaped cover body 22 that covers the frame unit 21. The frame unit 21 and the cover body 22 are combined with each other to form a hollow receiving portion surrounded by them. A magnetic disk body (not shown) is received in the receiving portion, and magnetic recording / reproduction of the access area (magnetic disk) of the magnetic disk body is performed.

A front panel 2 for guiding the magnetic disk body to the receiving portion in a correct posture is provided on the front portion of the receiving portion.
4 are assembled. A reception port 24a is formed in the front panel 24. Receiving port 2 in the receiving section
An eject plate 27 that positions the magnetic disk body inserted from 4a so that one surface thereof faces, and a disk holder unit 28 that faces the surface opposite to the one surface of the magnetic disk body and holds the magnetic disk body at a predetermined position. It is provided.

Further, in the receiving portion, when the magnetic disk main body is positioned at a predetermined position, there is provided a carrier unit 29 having a magnetic head 35 opposed to a window of the magnetic disk whose shutter is opened, and an eject lever 30.
Are provided. The eject lever 30 is a rotary shaft (shaft portion) 30a that is axially supported by the frame unit 21.
And the arm portion 30b extending to one side from the rotation shaft 30a.
And the protrusion 30 provided at the free end of the arm 30b.
c and.

The eject lever 30 rotates about a rotary shaft 30a parallel to the surface of the frame unit 21. The protrusion 30c extends so as to face the mutual surface of the frame unit 21 and the cover body 22. The protrusion 30c extends to the vicinity of one surface of the cover body 22 and is set to be narrower than the distance between the carrier unit 29 and the cover body 22. That is, the gap between the tip of the protrusion 30 c and the cover body 22 is positioned at least smaller than the gap between the cover body 22 and the carrier unit 29.

As parts held by the frame unit 21, as shown in FIG. 6, in addition to the eject lever 30 and the carrier unit 29, a disk table 39 having a magnet for rotating the magnetic disk,
Guide bar 3 for moving the carrier unit 29 back and forth
3. A guide bar clamp 31 for clamping the guide bar 33 and the like are attached. Further, on the back surface of the frame unit 21, an index magnet, a rotor, a printed circuit board and the like (not shown) are provided as components of the magnetic recording / reproducing apparatus.

When the eject plate 32 pushes the eject button 32 protruding from the outer surface of the front panel 24 into the receiving portion, the eject plate 27 moves a little rearward to rotate the eject lever 30.

The magnetic disk body itself housed in the receiving portion is locked by a lock mechanism (not shown) so that the magnetic disk body does not pop out of the receiving portion. When the lock mechanism is unlocked from this state, the magnetic disk body is moved from the receiving portion to the outside of the receiving port 24a of the front panel 24 by the eject lever spring 33 which is a spring mechanism for urging the eject lever 30. It is discharged so that a part of it pops out. The eject plate 27 is provided with eject springs 34a and 34b as a spring mechanism, and when the pressing of the eject button 32 is released, the eject plate 27 returns to the original position by the spring mechanism. In this way, the magnetic disk body can be pulled out from the receiving portion.

Since the eject lever 30 is biased counterclockwise by the spring mechanism, the shutter closes the window in parallel with the ejection from the receiving portion of the magnetic disk body.

The magnetic recording / reproducing apparatus comprises a carrier unit 2
9 is held in the frame unit 21, and the carrier unit 29 is housed in the receiving portion between the frame unit 21 and the cover body 22. That is, the frame unit 21 is provided with a component that constitutes the eject mechanism, a component that holds the magnetic disk body, and a carrier unit 29 that holds the magnetic head 35 provided on the carrier unit 29. These parts are covered with a cover body 22 to assemble the magnetic recording / reproducing apparatus.

By the way, in the magnetic recording / reproducing apparatus as described above, hooking portions 25 and 25 'are provided on the left and right sides of the inside of the front panel 24 so that the front panel 24 does not come off from the cover body 22, as shown in FIG. As described above, the hook portions at the tips of the hook portions 25, 25 ′ are hooked in the square holes 23, 23 ′ provided in the cover body 22.

[0012]

However, in the front panel detachment prevention mechanism in the conventional magnetic recording / reproducing apparatus, both sides of the cover body 22 in which the square holes 23 and 23 'are provided are in a direction perpendicular to the surface thereof. Easy to bend. Therefore, the hook portion 25 of the front panel 24,
There arises a problem that 25 'is easily removed from the square holes 23, 23'.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and to provide a front panel detachment prevention mechanism in which the front panel is unlikely to come off even if deflection occurs on both sides of the cover body.

[0014]

According to the present invention, the left and right ends of the inside of the front panel are provided with hooking portions, the lower end is provided with fitting plate portions, and the tip of the hooking portion is provided with engaging claws. And a fitting hole is formed in the fitting plate portion, fitting claws are formed on left and right sides of a lower cover body attached to a lower side of the frame unit, and an upper cover attached to an upper side of the frame unit. Engagement holes are formed on both sides of the body, and the engagement claws are engaged with the engagement holes, and the fitting holes are fitted into the fitting claws so that the front panel can be attached to the both sides. A front panel detachment prevention mechanism in a floppy disk drive characterized by being attached to a cover body and the frame unit is obtained.

Further, according to the present invention, a hook portion and a fitting arm portion are provided at both left and right inner portions of the front panel, and an engaging claw is formed at a tip of the hook portion.
A fitting hole is formed in the fitting arm portion, fitting claws are formed on the inner left and right sides of the lower cover body attached to the lower side of the frame unit, and an upper cover body attached to the upper side of the frame unit is formed. Engagement holes are formed on both sides, and the engagement claws are engaged with the engagement holes, and the fitting holes are fitted into the fitting claws so that the front panel is secured to the both cover bodies. And a front panel detachment prevention mechanism in a floppy disk drive, characterized in that it is attached to the frame unit.

Further, according to the present invention, a hook portion and a fitting arm portion are provided at both left and right inner portions of the front panel, and an engaging claw is formed at a tip of the hook portion.
Fitting claws are formed on the fitting arm portion, fitting holes are formed on the inner left and right sides of the lower cover body attached to the lower side of the frame unit, and the upper cover body attached to the upper side of the frame unit is formed. Engagement holes are formed on both sides, and the engagement claws are engaged with the engagement holes, and the fitting claws are fitted into the fitting holes to secure the front panel to the both cover bodies. And a front panel detachment prevention mechanism in a floppy disk drive, characterized in that it is attached to the frame unit.

Further, according to the present invention, hooking portions are provided at both left and right inner sides of the front panel, fitting plate portions are provided at lower ends thereof, and engaging hooks are formed at tips of the hooking portions. Fitting holes are formed in the fitting plate portion, fitting claws are formed on the inner left and right sides of the frame unit, and engaging holes are formed on both sides of the cover body attached to the frame unit. A front in a floppy disk drive, characterized in that a claw is engaged with the engagement hole, the fitting hole is fitted into the fitting claw, and the front panel is attached to the cover body and the frame unit. A panel detachment prevention mechanism can be obtained.

Further, according to the present invention, the left and right ends of the inside of the front panel are respectively provided with hooks and fitting arms, and engaging hooks are formed at the tips of the hooks.
Fitting holes are formed in the fitting arm portion, fitting claws are formed on the inner left and right sides of the frame unit, and engaging holes are formed on both sides of the cover body attached to the frame unit, respectively. A floppy disk drive characterized in that an engaging claw is engaged with the engaging hole, and the fitting hole is fitted into the fitting claw to attach the front panel to the cover body and the frame unit. The front panel detachment prevention mechanism in is obtained.

Further, according to the present invention, a hook portion and a fitting arm portion are provided at both left and right inner portions of the front panel, and an engaging claw is formed at a tip of the hook portion.
Fitting claws are formed on the fitting arm portion, fitting holes are formed on the inner left and right sides of the frame unit, and engaging holes are formed on both sides of the cover body attached to the frame unit. Floppy disk drive, characterized in that the engaging claw is engaged with the engaging hole, the fitting claw is fitted in the fitting hole, and the front panel is attached to the cover body and the frame unit. The front panel detachment prevention mechanism in is obtained.

[0020]

FIG. 1 shows the structure of a magnetic recording / reproducing apparatus having a front panel detachment preventing mechanism according to a first embodiment of the present invention. FIG. 2 is a partial cross-sectional side view showing the front panel detachment prevention mechanism portion of FIG. Hereinafter, a front panel detachment preventing mechanism according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2. 1 is the same as the above-mentioned conventional example except for the structure of the front panel detachment preventing mechanism shown in FIG. 2, and therefore the description thereof is omitted here. In FIG. 1, the front panel 4 is provided with hook portions 5 on both left and right inner sides thereof, and a plate-like fitting plate portion 6 is formed at the lower end of the front panel so as to extend in the insertion direction of the floppy disk, and is integrally molded. Has been done. Engaging claws are formed at the tip of the hook portion 5, and fitting holes 7 are formed at both left and right ends of the fitting plate portion 6. One engaging hole 8 is formed on each side of the upper cover body 2. One fitting claw 3 is formed on each of the inner left and right sides of the lower cover body 10 attached to the lower side of the frame unit 1. The fitting claw 3 extends in the insertion direction of a floppy disk (not shown).

When assembling the magnetic recording / reproducing apparatus, the engaging claw at the tip of the hook portion 5 of the front panel 4 is attached to the cover body 2.
While engaging with the engaging holes 8 formed on both sides of the lower cover body 10, the two fitting holes 7 formed in the fitting plate portion 6 provided at the lower end of the front panel 4 are respectively formed.
The front panel 4 is attached to the upper cover body 2, the lower cover body 10, and the frame unit 1 by being hooked on the two fitting claws 3 formed on the inner left and right sides of the. FIG. 2 shows the state of attachment in this way.

Next, a front panel detachment preventing mechanism according to the second embodiment of the present invention will be described. FIG. 3 is a diagram showing a second embodiment of the present invention. In FIG.
A hook portion 5 and a fitting arm portion 9 are provided at both left and right inner portions of the front panel 4, respectively. Hook 5
An engaging claw is formed at the tip of the, and a fitting hole 7 is formed in the fitting arm 9. One engaging hole 8 is formed on each side of the upper cover body 2. One fitting claw 13 is formed on each of the left and right sides of the frame unit 1. The fitting claw 13 extends in the insertion direction of a floppy disk (not shown).

When assembling the magnetic recording / reproducing apparatus, the engaging claw at the tip of the hook portion 5 of the front panel 4 is attached to the cover body 2.
The engaging holes 8 formed on the both sides of the frame unit 1 are engaged with the engaging holes 7 formed on the two engaging arm portions 9, and the two engaging claws are formed on the left and right sides inside the frame unit 1, respectively. The front panel 4 is attached to the upper cover body 2 and the frame unit 1 by being hooked on 13. The state of attachment in this way is shown in FIG.

In this case, the fitting claws are formed on the inner right and left sides of the frame unit 1, but the lower cover body 10 is provided below the frame unit 1 as in the first embodiment. The fitting claws may be formed on the inner left and right sides of the lower cover body 10. On the contrary, in the first embodiment, the fitting claws are formed on the left and right sides of the inside of the lower cover body 10. However, as in the second embodiment, the fitting claws are formed on the frame. It may be formed on the inner left and right sides of the unit 1.

In the second embodiment, the front panel 4 is attached to the cover body 2 and the frame unit 1 by forming the fitting hole 7 in the fitting arm 9 and then fitting the fitting hole 7 in the fitting hole 7. The fitting claws 13 provided on the left and right sides inside the frame unit 1 are engaged with each other, but conversely, the same fitting as the fitting claws 13 of FIG. The front panel 4 may be attached to the upper cover body 2 and the frame unit 1 by providing claws and providing fitting holes on the left and right of the frame unit 1 and fitting the fitting claws into the fitting holes.

[0026]

As described above, according to the front panel detachment preventing mechanism of the present invention, since the hook portions are provided in the up-down direction and the left-right direction of the floppy disk drive, when the cover body is attached, The front panel does not come off from the cover body and the frame unit even when it is bent in the left-right direction or when the frame unit is bent in the vertical direction.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of a magnetic recording / reproducing apparatus equipped with a front panel detachment prevention mechanism of the present invention.

FIG. 2 is a partial cross-sectional side view showing the structure of the front panel detachment preventing mechanism in the first embodiment of FIG.

FIG. 3 is an exploded perspective view showing a second embodiment of a magnetic recording / reproducing apparatus having a front panel detachment prevention mechanism of the present invention.

FIG. 4 is a partial cross-sectional side view showing a structure of a front panel detachment preventing mechanism according to the second embodiment of FIG.

FIG. 5 is an exploded perspective view showing an embodiment of a magnetic recording / reproducing apparatus including a conventional front panel detachment prevention mechanism.

FIG. 6 is a side view showing a structure of a conventional front panel detachment prevention mechanism.

[Explanation of symbols]

 1 Frame Unit 2 Upper Cover 3,3 Fitting Claw 4 Front Panel 5 Hooking Part 6 Fitting Plate 7 Fitting Hole 8 Engaging Hole 9 Fitting Arm 10 Lower Cover

Claims (6)

[Claims] 1. A front panel is provided with hooks at both left and right ends thereof, a fitting plate is provided at a lower end of the front panel, and engaging hooks are formed at tips of the hooks so as to be fitted to the fitting plate. A fitting hole is formed, and fitting claws are formed on the left and right inside the lower cover body that is attached to the lower side of the frame unit.
Engagement holes are formed on both sides of the upper cover body attached to the upper side of the frame unit, and the engaging claws are engaged with the engaging holes and the fitting holes are fitted into the fitting claws. In addition, the front panel detachment prevention mechanism in a floppy disk drive, wherein the front panel is attached to the both cover bodies and the frame unit. 2. A hook portion and a fitting arm portion are respectively provided at both left and right inside portions of the front panel, an engaging claw is formed at a tip of the hook portion, and a fitting arm portion is fitted to the fitting arm portion. Holes are formed, and fitting claws are formed on the inside left and right of the lower cover body attached to the lower side of the frame unit, and engaging holes are formed on both sides of the upper cover body attached to the upper side of the frame unit. The front panel is formed on the cover body and the frame unit by engaging the engaging claw with the engaging hole and fitting the fitting hole with the fitting claw. Front panel removal prevention mechanism for floppy disk drives. 3. A hook portion and a fitting arm portion are respectively provided at both left and right inner portions of the front panel, an engaging claw is formed at a tip of the hook portion, and a fitting arm portion is fitted. Claws are formed, and fitting holes are formed on the inside left and right of the lower cover body attached to the lower side of the frame unit, and engaging holes are formed on both sides of the upper cover body attached to the upper side of the frame unit. Characterized in that the engaging claw is engaged with the engaging hole, the fitting claw is fitted in the fitting hole, and the front panel is attached to the both cover bodies and the frame unit. Front panel removal prevention mechanism for floppy disk drives. 4. The front panel is provided with hooks at both left and right ends thereof, a fitting plate is provided at a lower end of the front panel, and engaging hooks are formed at tips of the hooks to fit the fitting plate. A fitting hole is formed, fitting claws are formed on the inner right and left sides of the frame unit, and engaging holes are formed on both sides of the cover body attached to the frame unit,
A floppy disk characterized in that the engaging claw is engaged with the engaging hole, the fitting hole is fitted into the fitting claw, and the front panel is attached to the cover body and the frame unit. Front panel removal prevention mechanism for drives. 5. A hook portion and a fitting arm portion are respectively provided at both left and right inner portions of the front panel, an engaging claw is formed at a tip of the hook portion, and a fitting arm portion is fitted to the fitting arm portion. Holes are formed, fitting claws are formed on the left and right sides of the frame unit, engagement holes are formed on both sides of the cover body attached to the frame unit, and the engagement claws are formed on the engagement holes. A front panel detachment prevention mechanism for a floppy disk drive, characterized in that the front panel is attached to the cover body and the frame unit by engaging the fitting holes with the fitting claws. 6. A hooking portion and a fitting arm portion are provided at both left and right inner portions of the front panel, an engaging claw is formed at a tip of the hooking portion, and the fitting arm portion is fitted. Claws are formed, fitting holes are formed on the inner left and right sides of the frame unit, and engagement holes are formed on both sides of the cover body attached to the frame unit. A front panel detachment prevention mechanism in a floppy disk drive, characterized in that the front panel is attached to the cover body and the frame unit by engaging the fitting claws with the fitting holes.