JPH06243616A - Device for adjusting position detecting senser - Google Patents

Abstract

PURPOSE:To simplify the adjusting work of a position detecting senser by attaching a screw to a chassis pressing the senser, and providing a spring against the press of the screw and transmitting linear motion to the senser. CONSTITUTION:A carriage feeding device is provided with the senser 11 detecting that a head exists in an end position on a magnetic disk 1 by inserting a detection plate 10a provided on a magnetic head carriage 10 loading the magnetic head 7, a substrate 15 attaching the senser 11, a case 16 for engaging the senser substrate 15 with a chassis recessed part 14a, the screw 17 pressing the substrate 15 to the inside wall side of the case 16 and the spring 16a. When the screw 17 is rotated, the substrate 15 attaching the senser 11 pressed by the screw 17 is moved and adjusted in linear by a screw feeding mechanism and the spring 16a. Further, since the substrate 15 is pressed and held by the spring 16a and the screw 17 always, the fastening fixation by the screw after adjustment is eliminated, and the adjustment work is simplified.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adjusting device for a position detecting sensor in a carriage feeding device of a magnetic disk recording / reproducing apparatus used in various office automation (OA) equipment.

[0002]

2. Description of the Related Art FIG. 3 is a perspective view showing a conventional magnetic disk recording / reproducing apparatus, and FIG. 4 is a perspective view of a carriage feeding apparatus, which is a main part thereof.

A magnetic disk 1 for recording and reproducing information is housed in a magnetic disk cartridge 2 which rotatably supports it. Reference numeral 3 is a loading mechanism for attaching the magnetic disk cartridge 2 to a recording / reproducing position of the apparatus main body. The magnetic disk rotation drive mechanism 4 causes the motor 5 to rotate the magnetic disk 1 via the belt 6. A magnetic head 7 is arranged so as to contact the surface of the magnetic disk 1. Reference numeral 8 denotes a carriage feeding device for moving the magnetic head 7 in the radial direction of the magnetic disk 1. Reference numeral 9 denotes a control circuit section, which is composed of an electric circuit for controlling recording or reproduction on the magnetic disk 1 by the magnetic head 7, and controlling the magnetic disk rotation drive mechanism 4 and the carriage feeding device 8.

Position detection sensor 1 of carriage feeding device 8
The adjusting mechanism unit 1 detects that the magnetic head 7 is at the end position on the magnetic disk 1 by inserting the detection plate 10a provided on the magnetic head carriage 10 on which the magnetic head 7 is mounted. In order to adjust the position of the sensor 11, the sensor 12 is provided with a long hole 12a provided in a holder 12 for holding the sensor 11 and a holder 12 integrated with the sensor 11 by fitting a screw 13 into the long hole 12a. After linearly adjusting the movement, the screw 13 is tightened and fixed to the chassis 14. 1
5 is a sensor substrate.

[0005]

However, in the position detecting sensor adjusting device in the above-mentioned conventional carriage feeding device, since the sensor is directly moved and linearly adjusted, very fine adjustment work is required. There has been a problem that when the screw is tightened and fixed after the adjustment work, a deviation due to rattling occurs.

The present invention solves such a conventional problem, and an object thereof is to simplify the adjustment work of the position detection sensor.

[0007]

In order to solve the above-mentioned problems, the present invention provides a screw attached to a chassis for pressing a sensor and a spring mounted so as to resist the pressing of the screw. The sensor is adjusted by rotating the sensor.

[0008]

According to the present invention, therefore, the rotation of the screw is converted into a linear motion by providing a screw mounted on the chassis for pressing the sensor and a spring mounted so as to resist the pressing of the screw. Can be transmitted to the sensor, and the sensor can be linearly moved and adjusted by rotating the screw. Further, since the sensor is constantly locked by the screw and the spring, the tightening and fixing by the screw after the adjustment can be eliminated.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the position detecting sensor adjusting device of the present invention will be described with reference to FIGS. The same parts as those of the conventional example will be described by giving the same numbers. FIG. 1 is a schematic perspective view of a carriage feeding device, and FIG. 2 is a cross-sectional view of a main part of an adjusting mechanism portion of a position detection sensor of the device. The carriage feeding device is a magnetic head carriage 1 on which a magnetic head 7 is mounted.
By inserting the detection plate 10a provided at 0,
A sensor 11 for detecting that the magnetic head 7 is at the end position on the magnetic disk 1, a sensor substrate 15 to which the sensor 11 is attached, and a case 16 for locking the sensor substrate 15 in the chassis recess 14a. Sensor board 15
So that the chassis recess 1 is pressed against the inner wall of the case 16.
4a, and a spring 16a integrated with the case 16 that acts between the sensor substrate 15 and the case 16 so as to resist the pressing of the screw 17.

Next, the operation of the above embodiment will be described.
When the screw 17 is rotated, the sensor feed 15 and the spring 16a linearly move and adjust the sensor substrate 15 to which the sensor 11 pressed by the screw 17 is attached. As described above, according to the above-described embodiment, the rotation of the screw 17 causes the sensor 1
1 can be linearly moved and adjusted, and since the sensor substrate 15 is constantly pressed and held by the spring 16a and the screw 17, the tightening and fixing by the screw after the adjustment can be eliminated, and the adjustment work can be simplified. It has the advantage that it can be measured.

[0011]

As is apparent from the above description of the embodiments, the present invention has the following effects.

(1) Since the rotation of the screw is converted into a linear movement for the adjustment of the position detection sensor, fine adjustment can be easily performed.

(2) Since the sensor substrate to which the sensor is attached is constantly held by the screw and the spring, the tightening and fixing by the screw after the adjustment can be eliminated, and the work can be simplified.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a carriage feeding device of the present invention.

FIG. 2 is a sectional view of an essential part of an adjusting mechanism portion of a position detection sensor of the apparatus.

FIG. 3 is a perspective view of a conventional magnetic disk recording / reproducing apparatus.

FIG. 4 is a perspective view of the same carriage feeding device.

[Explanation of symbols]

 7 magnetic head 10 magnetic head carriage 10a detection plate 11 sensor 14 chassis 16 case 16a spring 17 screw

Claims (1)

[Claims] 1. A detection plate provided on a magnetic head carriage for moving a magnetic head; a sensor for detecting that the magnetic head is at a terminal position on a magnetic disk by inserting the detection plate; A case having a built-in sensor and locked to the end of the chassis and provided with an insertion hole for the detection plate, and a screw attached to the chassis for pressing the sensor against the inner wall side of the case having the insertion hole And a position detection sensor adjusting device including a spring mounted between the sensor and the inner wall so as to resist the pressing of the screw.