JPH0351818Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a floppy disk drive device.
This invention relates to an upper carriage lifting mechanism that lifts the upper carriage to which the upper head is attached so that the upper head does not come into contact with the jacket when loading or unloading the disk jacket.

[Summary of the idea]

The upper cartridge lifter is separate from the upper cartridge, and its mounting position is adjustable to absorb variations in the upper carriage vertical stroke due to variations in the machining accuracy, friction coefficient, and force of the parts, and to improve the ease of loading and unloading the disk jacket. By reducing the clearance between the upper head and the disk jacket and the clearance between the upper carriage and the case, the overall thickness of the floppy disk drive device can be made thinner.

[Conventional technology]

FIG. 2 shows a plan view of a conventional upper carriage lifting and lowering mechanism, and FIG. 3 shows a sectional view.

Reference numeral 100 denotes an upper carriage, and an arm portion 101 is integrally formed. A disk holder 2 is raised upward by a separately provided mechanism when a disk jacket 8 containing a floppy disk (not shown) is inserted or removed, and an arm 21 lifts an arm 101 of the upper carriage. The base of the upper carriage 100 is connected to a separate member 7 by pins 4 and 5 and a leaf spring 3.
When the arm 101 is lifted, the head 12 rotates around the area 31 where the leaf spring 3 is sandwiched between the pin 5 and the separate member 7, and moves upward to remove the cross section from the disk jacket. run away from target

[Problem and purpose that the invention attempts to solve]

However, the conventional upper carriage lifting and lowering mechanism has the following problems.

First, the magnitude of the vertical stroke of the disk holder 2 includes variations due to machining errors of the parts. Even when the stroke is at its minimum due to this variation, the position of the arm 101 relative to the upper carriage 100 must be determined so that the arm 101 disengages from the lower surface of the head or the upper surface of the jacket in cross section.
When the position of the arm 101 is determined in this way, the tip of the upper carriage 100 will rise high when the stroke is at its maximum due to variations. In this case as well, the position of the cover 13 must be set high so that the upper carriage does not come into contact with the cover 13 above the upper carriage. As a result, the entire floppy disk drive became thick.

Second, a head load spring 9 is attached to the upper carriage 100 for pressing the head 12 against a disk (not shown) with an appropriate force when reading or writing data to or from the disk (not shown). The spring force of the head load spring 9 is applied to the arm 21 of the disk holder in the state shown in FIG. 3, deforming the arm 21, the disk holder 2, and a mechanism (not shown) for lifting the disk holder.

This deformation reduces the actual stroke of the disk holder arm 21. This decrease must be compensated for by correcting the position of the arm 101 of the upper carriage, but it is difficult to accurately determine the amount of correction at the design stage, and experiments have been required.

Thirdly, the disk holder 2 does not move in the direction of arrow 11, whereas the carriage 100 moves in the direction of arrow 11. As a result, the mechanical arm length 22 of the arm portion 21 of the disk holder changes.

Also, the spring force of the head load spring 9, the plate thickness of the disk holder, the arm 21 of the disk holder, etc.
There are variations in the width. Due to these factors, the substantial vertical stroke of the arm 21 of the disk holder varies. For this reason, as with the first problem, it was necessary to increase the thickness of the entire floppy disk drive device in order to absorb this variation.

The present invention attempts to solve these problems of the conventional upper carriage lifting mechanism and to realize a thinner floppy disk drive device with a simple mechanism.

[Means for solving problems]

The floppy disk drive device according to the present invention is
A load spring applies downward spring pressure, and the free end side with a head attached to the lower surface is placed above the upper carriage, which moves up and down using the fixed end as a fulcrum, and the disk jacket containing the floppy disk, and is driven in the vertical direction. and an engaging means for engaging the disk holder and a movable portion of the upper carriage to move the upper carriage up and down following the vertical movement of the disk holder, wherein the upper carriage side The engaging means is comprised of an upper carriage lifter movably attached to the upper carriage and provided with an arm portion that engages with the disk holder.

[Effect]

The upper carriage lifter is attached to the upper carriage. The upper carriage lifter is lifted by the upper carriage lifter drive mechanism when loading or unloading the jacket from the floppy disk drive. As the upper carriage lifter rises, the upper head attached to the tip of the upper carriage rises and escapes so as not to come into cross-sectional contact with the jacket being inserted or removed.

〔Example〕

FIG. 1 shows a plan view of a first embodiment of the present invention.

1 is an upper carriage according to the present invention, and this carriage itself is not provided with an arm portion. 6 is an upper carriage lifter according to the present invention, which lifts the upper carriage 1.
The mounting position is movable in a direction parallel to the arrow 11, and the mounting position can be adjusted.

FIG. 6 shows a state in which the upper carriage lifter 6 is fixed to the upper carriage 1. The upper carriage lifter 6 is pulled upward by a screw 61 and is brought into close contact with the lower surface of the upper carriage 1.

FIG. 4 is a perspective view showing details of the upper carriage lifter 6.

Numeral 61 is a screw for tightening and fixing the upper carriage lifter 6 to the upper carriage 1.

62 is an arm of the upper carriage lifter, which touches the arm 21 of the disk holder and lifts the upper carriage.

The arm portion 62 of the upper carriage lifter protrudes from the portion of the upper carriage lifter 6 that comes into contact with the lower surface of the upper carriage 1 in order to avoid deformation of the upper carriage lifter due to tightening of the screw 61.

FIG. 5 shows a second embodiment of the upper carriage lifter according to the present invention.

In this embodiment, the arm portion 62 is a round bar, and is integrated with the main body of the upper carriage lifter 6 by driving or the like.

This is because wear due to friction between the arms 21 of the disk holder can be prevented by subjecting only the arms to a hardening process such as quenching, and the upper carriage lifter body is made of a material that is easy to bend. be able to.

[Effect of idea]

In the floppy disk drive device according to the present invention, the engaging means on the upper carriage 1 side is constituted by an upper carriage lifter 6 provided with an arm portion 62 which is movably attached to the upper carriage 1 and engages with the disk holder 2. The amount of elevation of the head 12 can be adjusted as desired by changing the ratio of the distances L1 and L2 from the fulcrum of the upper carriage 1 (plate spring 3) to the head 12 and the arm 62, that is, the lever ratio L1/L2. The following effects can be obtained.

Firstly, the adjustment process can absorb variations in the amount of rise of the upper head due to variations in parts processing.
The amount of rise of the head can be suppressed to the necessary minimum. Therefore, the entire floppy disk drive device can be made thinner. Further, since processing errors of parts can be absorbed through adjustment, it is possible to widen processing tolerances and reduce parts costs.

Second, since there is no need to compensate for the reduction in the vertical stroke of the arm of the disk holder due to the spring force of the head load spring, the design becomes easier, and there is no need for confirmation through prototypes, so the delivery time of the product can be shortened. Design costs can also be reduced.

Third, it is possible to absorb variations in the vertical stroke of the disk holder arm due to variations in the spring force of the head load spring, the plate thickness of the disk holder, the width of the disk holder arm, etc., making the entire floppy disk drive device thinner. It becomes possible.

Fourth, the arm of the upper carriage must be placed above the arm of the disk holder, and in the conventional structure, the order of assembly of the upper carriage and disk holder is that the disk holder must be assembled first, and then the upper carriage must be assembled. However, according to the structure of the present invention, since the upper carriage lifter is a small part, even if the upper carriage is assembled first and then the disk holder is assembled, the upper carriage lifter can be assembled after that. As a result, partial repairs and replacement of parts are easy, and after-sales service is improved.

[Brief explanation of drawings]

Fig. 1 - A plan view showing the first embodiment of the upper carriage elevating mechanism according to the present invention, Fig. 2 - A plan view showing the conventional upper carriage elevating mechanism, and Fig. 3 - A sectional view showing the conventional upper carriage elevating mechanism. , Fig. 4 - Detailed view of the upper carriage lifter according to the first embodiment of the invention, Fig. 5 - Detailed view of the upper carriage lifter according to the second embodiment of the invention, Fig. 6 - Detailed view of the upper carriage lifter according to the second embodiment of the invention. A side view showing an attached state. 1,100...Upper carriage, 12...Upper head, 11...Upper carriage moving direction, 101...
...Arm of upper carriage, 2...Disk holder, 21...Disk holder arm, 22...Length of disk holder arm, 3...Leaf spring, 31
...Root of leaf spring, 4, 5...Pin, 6...Upper carriage lifter, 61...Screw, 62...Upper carriage lifter arm, 7...Fixing member, 8...
...Disc jacket, 9...Head load spring, 13...Cover.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An upper carriage which is given downward spring pressure by a load spring and whose free end side with a head attached to the lower surface moves up and down using the fixed end as a fulcrum, and a disk carriage with a built-in floppy disk. A disk holder that holds a butt and is driven in the vertical direction; and an engagement means that engages the disk holder with a movable portion of the upper carriage to move the upper carriage up and down following the up and down movement of the disk holder. In the floppy disk drive device, the engaging means on the upper carriage side is comprised of an upper carriage lifter that is movably attached to the upper carriage and has an arm that engages with the disk holder. A floppy disk drive device. (2) The float according to claim 1, wherein the arm portion of the upper carriage lifter is made of a wear-resistant material, and a portion of the arm portion that engages with the disk holder is rounded. Tupee disk drive device.