JP3134058B2 - Flexible disk drive - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible disk drive (hereinafter abbreviated as "FDD") for driving a flexible disk (hereinafter abbreviated as "FD"), and particularly to a side plate of a frame having a groove parallel to a direction in which the FD is inserted. The present invention relates to an FDD configured to support a slide member slidably with respect to a frame without being formed.

[0002]

2. Description of the Related Art In recent years, as FDDs have become smaller and thinner, the number of cases where the method of forming a frame by sheet metal working has shifted to a method of forming the frame by casting has increased. The reason will be described below. The frame must be made thinner as the FDD becomes thinner, but the strength of the frame must meet a predetermined standard or higher. For this purpose, a method is conceivable in which the thickness of the portion where the component parts of the frame are mounted is reduced, and the thickness of the other portions is increased to ensure a predetermined or higher standard. As described above, the method of forming the frame by casting is most suitable for changing the thickness of the frame.

In general, the slider is engaged with the frame by providing a projection on a side surface of the slider and providing an engagement groove on the side plate of the frame to engage with the projection.
However, when the frame is formed by casting, it is difficult to provide an engaging groove in the side plate of the frame that is parallel to the insertion direction of the FD and that engages with the protrusion to regulate the vertical position of the slider.

FIG. 7 is an exploded perspective view of an FDD disclosed in Japanese Patent Application Laid-Open No. 8-7437, which solves the above-mentioned problem. In the figure, 1 is an FDD, 2 is a shield, 3 is a slider, 4 is a holder, 5 is a frame, and 6 is an FD. Further, 31 is a side plate engaging portion that engages with the side plate of the frame, 32 is an inclined groove, 33 is a guide hole, and 41 is an inclined groove 32.
And 42 are frame groove projections which are fitted in a frame groove 51 provided perpendicular to the FD 6 insertion direction, 52 is a concave portion, 53 is provided in the concave portion 52 and is engaged with the guide hole 33. The guide hole projection 54 is a bottom plate.

Next, the operation of the conventional FDD 1 will be described.
The guide hole 33 is formed in a rectangular shape so as to extend in the sliding direction (AB direction) of the slider 3, and engages with a guide hole protrusion 53 provided in the concave portion 52 on both side plates of the frame 5. In the slider 3, the guide hole 33 has a guide hole protrusion 53.
When the side plate engaging portion 31 is engaged with the upper portion of both side plates of the frame 5, the movement in the vertical direction is restricted, and only the sliding in the AB direction is possible. Also,
Since the frame groove 51 provided on the frame 5 and fitted with the frame groove projection 41 may be formed perpendicular to the side plate of the frame 5, it can be easily formed by casting.

[0006]

The conventional FDD is configured as described above, and has the following problems. (1) Providing the concave portion 52 on the side plate of the frame 5 to be thinned requires an advanced casting technique, and mass production is difficult. (2) In order to slide the slider 3 normally, the component accuracy of each of the guide hole 33, the concave portion 52, and the guide hole protrusion 53 must be managed with high accuracy, which is difficult to manage. In addition, unless the interval between the concave portions 52 provided on both side plates of the frame 5 and the interval between the guide holes provided on both side plates of the slider 3 are precisely controlled, the sliding becomes impossible, and the management is difficult. (3) In order to engage the guide hole 33 and the guide hole protrusion 53, the guide hole 33 must be spread out of the frame 5, but the slider 3 may be deformed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a first object of the present invention is to provide an FDD which can be easily assembled regardless of the precision of each component. A second object is to provide an FDD that can be assembled without deforming a slider.

[0008]

A flexible disk drive according to the present invention comprises a frame in which a bottom plate and side plates provided on both sides of the bottom plate are integrally formed, and a FD supported and inserted into the frame. A holder to be held, supported by the frame, supported by the holder in opposition to the bottom plate of the frame, and moved in parallel with the insertion direction of the FD by an eject operation to move the holder from the FD driving position to the FD insertion position. And a side plate engagement provided on both sides orthogonal to the direction of movement of the slider, each of which engages an upper end of a side plate of the frame to restrict the movement of the slider in the direction of the bottom plate of the frame. Parts, insertion holes provided on both sides of the bottom plate perpendicular to the direction of movement of the slider, and provided on both sides perpendicular to the direction of movement of the slider, There is obtained a the insertion is inserted from the hole engages the rear surface of the bottom plate, the bottom plate engaging portion for restricting the movement of the bottom plate in the opposite direction of the frame of said slider facing.

Further, in the flexible disk drive according to the next invention, the bottom plate engaging portion is bent in parallel to the moving direction of the slider, is inserted from the insertion hole, and engages with the back surface of the bottom plate.

Further, in the flexible disk device according to the next invention, the bottom plate engaging portion is provided with a bent portion bent at the end toward the center of the bottom plate, and the insertion hole into which the bent portion can be inserted is provided in the insertion hole. Part and an engagement hole having a length in the center direction of the bottom plate shorter than the length of the bent portion are provided. The bent portion is inserted from the insertion hole, and the bottom plate is inserted through the engagement hole. To be engaged with the back surface of

A flexible disk drive according to another aspect of the present invention provides a frame in which a bottom plate and side plates provided on both sides of the bottom plate are integrally formed, and a holder for holding the FD supported and inserted into the frame. Supported by the frame, supporting the holder in opposition to the bottom plate of the frame, moving the holder in parallel with the insertion direction of the FD by an eject operation, and moving the holder from the FD driving position to the FD.
A slider to be moved to an insertion position, and insertion holes provided on both sides of the bottom plate orthogonal to a moving direction of the slider,
A bottom plate fitting groove is provided on both sides perpendicular to the moving direction of the slider, each of which is inserted from the opposite insertion hole and fits with the bottom plate, and regulates the movement of the slider in directions other than the FD insertion direction. It is provided.

Further, in the flexible disk drive according to the next invention, the bottom plate fitting groove is bent in parallel to the moving direction of the slider, and is inserted through the insertion hole to engage with the bottom surface of the bottom plate. And a bottom plate surface engaging portion that is opposed to the bottom plate rear surface engaging portion and engages with the surface of the bottom plate.

Further, in the flexible disk drive according to the next invention, the bottom plate fitting groove is bent in parallel to the moving direction of the slider, and is inserted through the insertion hole to engage with the bottom surface of the bottom plate. It is formed by a joining portion and a bottom plate surface engaging portion which is opposed to the bottom plate rear surface engaging portion and engages with the surface of the bottom plate.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of an FDD according to the present invention. The same reference numerals as those in FIG. 7 denote the same or corresponding parts, and a description thereof will be omitted. In the figure, 1a is an FDD, 3a is a slider, 34 is a bottom plate engaging portion, 34a is an extension portion, 3a
4b is a bent portion bent from the extension portion 34a in the AB direction. Reference numeral 5a denotes a frame, and 55 denotes an insertion hole provided in the bottom plate 54 for inserting the bottom plate engaging portion 34. FIG. 2 is a relationship diagram between the slider 3a and the frame 5a.
2A is a top view, and FIG. 2B is a side view. still,
2, illustration of the holder 4 and the frame groove 51 is omitted.

Next, the operation of engaging the slider 3a with the frame 5a will be described. First, the bent portion 34 b of the bottom plate engaging portion 34 is inserted into the insertion hole 55. For that purpose, the length of the insertion hole 55 in the AB direction needs to be longer than the bent portion 34b. Next, the bottom plate engaging portion 34 is moved in the direction B to engage the bent portion 34b with the back surface of the bottom plate 55. Thus, the engagement operation between the slider 3a and the frame 5a ends.

As a result, the slider 3a engages with the upper portion of the frame side plate and the side plate engaging portion 31, and the bent portion 34b
The vertical movement is regulated by the engagement between the bottom plate 54 and the rear surface of the bottom plate 54, so that the bottom plate 54 moves only in the AB direction. That is,
The vertical movement of the slider 3a can be regulated without providing the recess 52 and the guide hole projection 53 as shown in FIG. 6 on the frame 5a, and the manufacture of the frame 5a is simplified. In addition, the positional accuracy between the bottom plate engaging portion 34 and the insertion portion 55 can be inserted without making the accuracy so high, and parts management can be simplified. Further, in the configuration shown in FIG. 1, the bending step of the bottom plate engaging portion 34 may be performed only once, and the number of steps can be reduced. Further, when inserting the bent portion 34b into the insertion hole 55, the slider 3a can be inserted without expanding both ends thereof, and the deformation of the slider 3a can be prevented.

Embodiment 2 FIG. FIG. 3 is an exploded perspective view of the FDD according to the second embodiment of the present invention. The same reference numerals as those in FIG. 1 denote the same or corresponding parts, and a description thereof will be omitted. In the figure, 1b is an FDD, 3b is a slider, 35 is a bottom plate engaging portion, 35a is an extended portion, and 35b is a bent portion that is bent from the extended portion 35a orthogonally to the AB direction. Also, 5b
Is a frame, 56 is provided on the bottom portion 54, and the bottom plate engaging portion 3
5 is an engagement hole which engages with 5, and 56a is an insertion hole portion, 56b
Is an engagement hole. FIG. 4 is a diagram showing the relationship between the slider 3b and the frame 5b. FIG.
(B) is a diagram shown by the arrow CC, and FIG. 4 (c) is a side view.
In FIG. 4, the illustration of the holder 4 and the frame groove 51 is omitted.

Next, the operation of engaging the slider 3b with the frame 5b will be described. First, the bent portion 35b of the bottom plate engaging portion 35 is inserted through the insertion hole 56a of the engaging hole 56. For that purpose, it is necessary to make both the vertical and horizontal dimensions of the insertion hole 56a larger than the dimensions of the bent portion 35b.
Next, the bent portion 35b is moved toward the engagement hole 56b.
The width of the engagement hole 56b needs to be shorter than the length of the bent portion 35b orthogonal to the AB direction. This allows
The engagement operation between the slider 3b and the frame 5b ends.

As a result, the slider 3b engages the upper portion of the frame side plate with the side plate engaging portion 31 and the bent portion 35
By the engagement between b and the back surface of the bottom plate 54, the movement in the up-down direction is restricted, and the movement in only the AB direction is achieved. Also,
In the configuration of FIG. 3, the engagement area of the bent portion 35 with the bottom plate 54 can be freely set, so that the slidability is improved. Also, in the configuration of FIG. 1, the moving range of the slider 3a in the AB direction is proportional to the length of the bent portion 34b, but in the configuration of FIG. 3, it is proportional to the length of the engagement hole 56b. That is, in the configuration of FIG. 3, the size of the bent portion 35b may be small, and the manufacturing is simplified.

Embodiment 3 FIG. 5 is an exploded perspective view of the FDD according to the third embodiment of the present invention. The same reference numerals as those in FIG. 1 denote the same or corresponding parts, and a description thereof will be omitted. In the drawing, 1c is an FDD, 3c is a slider, 36 is a bottom plate fitting groove, and a bottom plate rear engagement portion 36a bent perpendicularly to the AB direction, and a bottom plate front engagement portion facing the bottom plate rear engagement portion 36a. 36b. Incidentally, the side plate engaging portion 31 is omitted from the slider 3c. FIG. 6 is a diagram showing the relationship between the slider 3c and the frame 5a.
(A) is a top view and FIG. 6 (b) is a side view. FIG.
, The illustration of the holder 4 and the frame groove 51 is omitted.

Next, the operation of fitting the slider 3c to the frame 5a will be described. First, the bottom plate back surface engaging portion 36 a of the bottom plate fitting groove 36 is inserted into the insertion hole 55. For that purpose, the length of the insertion hole 55 in the AB direction is set to the bottom plate back surface engaging portion 3.
It is necessary to make it longer than 6a. Next, the bottom plate fitting groove 36 is moved in the direction B, and the bottom plate 54 is fitted by the bottom plate back surface engaging portion 36a and the bottom plate surface engaging portion 36b.
Thereby, the fitting operation between the slider 3c and the frame 5a is completed.

With this arrangement, the vertical movement of the slider 3c is restricted by fitting the bottom plate fitting groove 36 and the bottom plate 54, and the slider 3c moves only in the AB direction. Become. Further, the bottom plate back surface engaging portion 36a may be bent perpendicularly to the AB direction like the bent portion 35b shown in FIG. 3, so that the size of the bottom plate back surface engaging portion 36a may be small, and the manufacturing is easy. become. In this case,
FIG. 3 in which an engagement hole 56 is provided instead of the frame 5a
Must be used as shown in FIG.

In the first to third embodiments, in order to make the drawings easy to see, all of the bottom plate 54 is disposed above the bottom of the side plate, and the bent portions 34b and 35b and the bottom plate back surface engaging portion 36a
Are described as being movable by engaging with the back surface of the bottom plate 54, but the bent portions 34b, 35b of the bottom plate 54 and the bottom plate back surface engaging portion 3
Only the portion that engages with the FDD 6a may be disposed above, and in this case, the thickness of the FDD can be reduced. Further, the shape of the insertion hole 55 and the engagement hole 56 provided in the bottom plate 54,
The relationship between the bent portions 34b, 35b and the shape of the bottom plate back surface engaging portion 36a may be any shape as long as the bent portions 34b, 35b and the bottom plate back surface engaging portion 36a can engage with the back surface of the bottom plate 54.

[0024]

According to the present invention, in the flexible disk drive, each of the side plate engaging portions provided on both sides perpendicular to the moving direction of the slider is engaged with the upper end of the side plate of the frame, and The movement of the frame in the direction of the bottom plate is regulated, and the bottom plate engaging portions provided on both sides perpendicular to the direction of movement of the slider are provided on both sides of the bottom plate perpendicular to the direction of movement of the slider. It is inserted from the insertion hole facing the engagement portion and engages with the back surface of the bottom plate,
Since the movement of the slider in the direction opposite to the bottom plate of the frame is regulated, the operation of the slider can be regulated without providing a projection on the side plate of the frame.

According to the next invention, in the flexible disk device, the bottom plate engaging portion is bent in parallel to the moving direction of the slider and is inserted from the insertion hole to engage with the back surface of the bottom plate. Only one bending step of the bottom plate engaging portion is required, and the number of working steps can be reduced.

According to the next invention, in the flexible disk device, the bottom plate engaging portion is provided with a bent portion bent at the end in the center direction of the bottom plate, and the bent portion can be inserted into the insertion hole. An insertion hole portion and an engagement hole portion in which the length of the bottom plate in the center direction is shorter than the length of the bent portion are provided, and the bent portion is inserted from the insertion hole portion through the engagement hole portion. Since it is engaged with the back surface of the bottom plate, the size of the bent portion can be reduced, and there is an effect that the manufacturing is simplified.

According to the next invention, in the flexible disk drive, the insertion holes are provided on both sides of the bottom plate orthogonal to the moving direction of the slider, and the bottom plate fittings provided on both sides orthogonal to the moving direction of the slider. Each of the mating grooves is inserted from the opposite insertion hole and fits with the bottom plate, thereby restricting the movement of the slider in a direction other than the FD insertion direction. Therefore, the bottom plate engaging portion can be omitted, and manufacturing is simplified. effective.

According to the next invention, in the flexible disk drive, the bottom plate fitting groove is bent in parallel to the moving direction of the slider, and is inserted from the insertion hole to engage with the bottom surface of the bottom plate. Since it is formed by the engaging portion and the bottom plate surface engaging portion which is opposed to the bottom plate back surface engaging portion and engages with the surface of the bottom plate, the bending process of the bottom plate fitting groove is required only once, and There is an effect that can be reduced.

Further, according to the next invention, the flexible disk device comprises a bottom plate back surface engaging portion which bends the bottom plate fitting groove toward the center of the bottom plate and engages with the back surface of the bottom plate. A bottom plate surface engaging portion that engages with the surface of the bottom plate facing the portion, an insertion hole into which the bottom plate back surface engaging portion can be inserted, and a length of the bottom plate in a center direction is provided. The bottom plate back surface engaging portion and the fitting hole portion shorter than the bottom plate surface engaging portion are formed. The bottom plate back surface engaging portion is inserted from the insertion hole, and the bottom plate is inserted through the engaging hole. Since the bottom plate is engaged with the bottom plate by the front engagement portion and the bottom plate rear engagement portion, the size of the bottom plate rear engagement portion can be reduced, and there is an effect that manufacturing is simplified.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a flexible disk device according to Embodiment 1 of the present invention.

2A and 2B are diagrams illustrating a relationship between a frame and a slider of the flexible disk device illustrated in FIG. 1, wherein FIG. 2A is a top view and FIG. 2B is a side view.

FIG. 3 is an exploded perspective view of the flexible disk device according to Embodiment 1 of the present invention.

4 is a diagram showing the relationship between the frame and the slider of the flexible disk device shown in FIG. 3, wherein FIG. 4 (a) is a top view, FIG. 4 (b) is a CC perspective view, and FIG. 4 (c) is a side view. FIG.

FIG. 5 is an exploded perspective view of the flexible disk device according to Embodiment 1 of the present invention.

6 is a diagram showing a relationship between a frame and a slider of the flexible disk device shown in FIG. 5, wherein FIG. 5 (a) is a top view and FIG. 5 (b) is a side view.

FIG. 7 is an exploded perspective view of a conventional flexible disk device.

[Explanation of symbols]

 3a, 3b, 3c Slider 34 Bottom plate engaging portion 34a Extended portion 34b Bent portion 35 Bottom plate engaging portion 35a Extended portion 35b Bent portion 36 Bottom plate fitting groove 36a Bottom plate back surface engaging portion 36b Bottom plate surface engaging portion 5a, 5b Frame 55 Insertion hole 56 Engagement hole 56a Insertion hole 56b Engagement hole

Claims (6)

(57) [Claims] 1. A frame in which a bottom plate and side plates provided on both sides of the bottom plate are integrally formed, a holder supported by the frame and holding an FD to be inserted, and a frame supported by the frame. The above-mentioned holder is supported by facing the bottom plate of
And a slider for moving the holder from the FD drive position to the FD insertion position by moving the holder in parallel with the insertion direction of the frame, and provided on both sides orthogonal to the direction of movement of the slider, each of which is associated with an upper end of a side plate of the frame. A side plate engaging portion that restricts movement of the slider in the direction of the bottom plate of the slider, insertion holes provided on both sides of the bottom plate orthogonal to the direction of movement of the slider, and orthogonal to the direction of movement of the slider. And a bottom plate engaging portion that is provided on both sides to be inserted from the insertion holes facing each other and engages with the back surface of the bottom plate to regulate movement of the slider in a direction opposite to the bottom plate of the frame. A flexible disk device characterized by the above-mentioned. 2. The flexible disk according to claim 1, wherein the bottom plate engaging portion is bent in parallel to a moving direction of the slider, and is inserted through an insertion hole to engage with a back surface of the bottom plate. apparatus. 3. The bottom plate engaging portion is provided at its end with a bent portion bent toward the center of the bottom plate, and the insertion hole has an insertion hole in which the bent portion can be inserted and a length in the center of the bottom plate. An engagement hole portion shorter than the length of the bent portion is provided, and the bent portion is inserted from the insertion hole portion, and is engaged with the back surface of the bottom plate through the engagement hole portion. Claim 1
The flexible disk device according to the item. 4. A frame in which a bottom plate and side plates provided on both sides of the bottom plate are integrally formed; a holder supported by the frame and holding an FD to be inserted; and a frame supported by the frame. The above-mentioned holder is supported by facing the bottom plate of
A slider for moving the holder from the FD drive position to the FD insertion position by moving in parallel to the insertion direction of the slider, insertion holes provided on both sides of the bottom plate orthogonal to the slider movement direction, and movement of the slider A bottom plate fitting groove that is provided on both sides perpendicular to the direction, is inserted from the insertion holes facing each other, fits with the bottom plate, and regulates movement of the slider in directions other than the FD insertion direction. Characteristic flexible disk device. 5. A bottom plate fitting groove which is bent in parallel to the moving direction of the slider, is inserted through an insertion hole and engages with the bottom surface of the bottom plate, and a bottom plate back engaging portion. 5. The flexible disk drive according to claim 4, wherein the flexible disk drive is formed by a bottom plate surface engaging portion that is opposed to and engages with the surface of the bottom plate. 6. A bottom plate fitting groove, which is bent toward the center of the bottom plate and engages with the bottom surface of the bottom plate, and engages with the front surface of the bottom plate facing the bottom plate rear engagement portion. The insertion hole is formed by a mating bottom plate surface engaging portion, and the insertion hole is configured such that the bottom plate rear surface engaging portion can be inserted therein, and the bottom plate has a center direction length of the bottom plate rear surface engaging portion and the bottom plate surface. The bottom plate back surface engaging portion is formed by a fitting hole portion shorter than the engaging portion, and the bottom plate back surface engaging portion is inserted from the insertion hole portion, and the bottom plate front surface engaging portion and the bottom plate back surface engaging through the engaging hole. 5. The flexible disk drive according to claim 4, wherein the bottom plate is fitted to the bottom plate by a portion.