JPH0142868Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] The invention provides a floppy disk device with
This invention relates to a position adjustment mechanism for a stopper that regulates the zero track position of a head carriage.

[Background of the invention and conventional technology]

In the process of assembling and adjusting a floppy disk device, the first step is to use the adjustment track (usually Tr.16).
Adjust the position, then adjust the number zero track (Tr.00)
Finally, it is necessary to adjust the motor so that the head mounted on the carriage is moved to the correct stopping position. The sensor generates a signal when the head is located at the outermost zero track (Tr. The zero track side of the head's movement range is adjusted to ensure that it stays within this range.

Conventionally, as shown in FIG. 1, the bent portion 1a of the stopper member 1 is adjusted to restrict the amount of retraction (distance to the stop position) of the rear end of the head carriage 3 moving along the guides 2, 2. As a method,
Loosen the screw 4, move the stopper member 1 back and forth by hand along the elongated hole 1b provided in the stopper member 1 to position it, and then loosen the screw 4.
The commonly used method has been to tighten and fix the

However, in this method, the screws must be loosened, adjusted, and then tightened again, which increases the number of work steps and makes adjustments difficult.

In order to avoid this problem, some devices use screws with eccentric shafts or screws with a cam shape, but it has been difficult to reduce costs due to the processing and assembly of the screws.

[Purpose of this invention]

In view of the above-mentioned disadvantages, the present invention provides a stopper position adjustment mechanism for a floppy disk device that can restrict the movement range of the head carriage by simply loosening the screws.

[Structure of the present invention]

In order to achieve the above object, a locking member made of a plate-like elastic material is bent into a U-shape, and in order to attach the locking member to the chassis, the upper and lower bent surfaces are provided with: A penetration hole is provided through which a screw passes, and the position of the stopper relative to the head carriage is adjusted depending on the degree of distortion of the locking member due to loose tightening of the screw.

[Example of idea]

FIG. 2 is a sectional view showing an embodiment of the present invention, and 11 is a stopper member, which is an elastic metal plate whose upper and lower ends are bent as shown in the perspective view of FIG. It has a U-shape, and has holes 11a and 11a' in the upper and lower curved surfaces, and has a contact portion (intermediate surface) 11b that receives and locks a head carriage 13, which will be described later. is given a shape with a slight concavity (constriction) to make it easier to distort when force is applied from above and below.
Reference numeral 12 denotes a guide, and the head carriage 13 moves along the guide 12 in the front and rear directions (in the left and right directions in the drawing) by a motor (not shown). 14 is a screw, which has a head 14a and is attached to the stopper member 11.
Penetrate through holes 11a and 11a' provided in
It has reached chassis 15 and is screwed together,
By rotating the head 14a during position adjustment, the head 14a moves up and down with respect to the chassis.

In FIG. 2, when the screw 14 is tightened from above, the chassis 15 and the head 14a of the screw 14
As the distance from the stopper member 11 becomes smaller, the stopper member 11 is gradually pressed down by the screw head 14a from above and the chassis 15 from below, and the abutment part 11b gradually moves to the left in the drawing. It becomes distorted and expands. In other words, the range in which the head carriage 13 can move from left to right along the guide 12 and retreat is restricted so that it becomes narrower.

On the other hand, when the screw 14 is loosened, the distance between the head 14a of the screw 14 and the chassis 15 increases, and the stopper member 11 stretches due to its own elasticity (returnability). Due to this,
Since the contact portion 11b gradually moves to the right in the drawing, as a result, the head carriage 1
3's retreat range will be expanded.

In this embodiment, a concave portion (constriction) is provided in the abutting portion of the stopper member to make it easily distorted, but by selecting a material that can be sufficiently smoothly deformed, such a concave portion can be eliminated. Of course, it doesn't matter.

FIG. 4 shows another embodiment of the present invention, in which the abutting portion 111b is provided as a convex portion separate from the portion that is distorted due to tightening of screws (not shown) by means of a groove, so that the abutting portion 111b can be smoothly and easily distorted. At the same time,
It has a slight buffering effect against the impact shock of the carriage.

[Effect of idea]

As mentioned above, by using the present invention, it is possible to obtain a mechanism for adjusting the stopper position of a head carriage in a floppy disk device by a simple method such as tightening or loosening a screw.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a conventional position adjustment mechanism, Fig. 2 is a sectional view showing an embodiment of the present invention, and Fig. 3 is a perspective view showing a locking member used in an embodiment of the present invention. FIG. 4 is a perspective view showing a locking member used in another embodiment of the present invention. 1, 11, 111...Stopper member, 3, 13
...Head cartridge, 4, 14...Screw, 5,
15...Siyashi.

Claims (1)

[Claim for Utility Model Registration] In adjusting the position of a stopper that regulates the zero-track position of the head carriage of a floppy disk device, the stopper is made of a substrate and a plate-like elastic material bent in a U-shape, and the upper and lower bent surfaces a locking member that is abutted by the head carriage on its intermediate surface; A stopper position adjustment mechanism in a floppy disk device, comprising: a screw member that distorts the intermediate surface of the locking member in response to tightening;