JPS62133264U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an optical disk drive device according to an embodiment of the present invention, Fig. 2 is a partial sectional view of Fig. 1, and Fig. 3 is a perspective view showing the state in which a linear motor is attached to a carriage. 4 are schematic diagrams showing the relationship between the center of gravity and the center of thrust, and FIG. 5 is a schematic diagram showing an embodiment in which the center of thrust is located closer to the center of gravity. 2...Shaft, 5,6...Guide shaft,
7-10...screw, 11...optical pick-up, 1
2...Carriage, 15, 16...Permanent magnet, 1
7, 18... Yoke, 20, 21... Side end, 2
2, 23... Bobbin, 24, 25... Moving coil, 26-31... Ball bearing, 32... Bracket, 33... Pin, 34... Tension spring.

Amendment July 7, 1986 The name of the invention is amended as follows. Title of the invention: Disk drive device The scope of the claims for utility model registration is amended as follows.

[Claims for Utility Model Registration] (1) In a disk drive device that rotates a disk using a spindle motor and moves a head for reading and writing data to the disk in the radial direction of the disk to position it on a target recording track. , a first guide bar with a square cross section disposed parallel to the direction in which the recording tracks are arranged, and a second guide with a square cross section disposed parallel to the first guide bar at a lower position. a magnetic circuit member that attracts the first and second guide bars to form a magnetic circuit; first and second coils that are inserted through the first and second guide bars; a traveling body on which first and second coils are fixedly fixed on both sides and on which the head is mounted; and a traveling body which is connected to the first and second guide rods in a state where movement of the traveling body in directions other than the radial direction of the disk is restricted. The first and second guide rods, the magnetic circuit member, and the coil move the running body to the radius of the disk. A disk drive device characterized by forming a linear motor that drives in a direction. (2) Utility Model Registration Scope of Claim 1 In the three pairs of ball bearings, two pairs are attached to one side end of the traveling body and one pair is attached to the other side end, and the first and second coils
One of the coils is disposed between two pairs of ball bearings disposed at one side end of the traveling body, and the other of the first and second coils is disposed at the other side end of the traveling body. The ball bearing is disposed immediately after a pair of ball bearings disposed in the section, and is mounted on the traveling body.
A disk drive device characterized in that the center of thrust of the linear motor is located immediately after the head . (3) Utility model registration Claim 2, wherein one of the pair of ball bearings is given a biasing force in the direction of the first or second guide rod with which it is in contact. A disk drive device characterized by: The brief description of the drawing has been amended as follows. "Moving coil" on page 14, lines 17 to 18 of the specification is corrected to "coil."

Claims (1)

[Claims for Utility Model Registration] (1) An optical disk is rotated by a spindle motor, and an optical head for reading and writing data on the optical disk is moved in the radial direction of the optical disk to position it on a target recording track. In the optical disk drive device, a first guide bar with a square cross section is arranged parallel to the recording track arrangement direction, and a square cross section is arranged parallel to the first guide bar at a low position. a second guide bar; a magnetic circuit member that attracts the first and second guide bars to form a magnetic circuit;
a traveling body on which the optical head is mounted, and a traveling body on which the optical head is mounted, the first and second moving coils being inserted into the guide rod of the optical head; The first and second guide rods are provided with three pairs of ball bearings pivotally supported on a traveling body movably engaged with the first and second guide rods while restricting movement of the disk in a direction other than the radial direction. 1. An optical disk drive device comprising: a guide rod, a magnetic circuit member, and a linear motor that drives the traveling body in a radial direction of the optical disk using a moving coil. (2) Scope of Utility Model Registration Claim 1, wherein the three pairs of ball bearings are provided with two pairs attached to one side end of the traveling body and one pair attached to the other side end, and One of the first and second moving coils is disposed between two pairs of ball bearings disposed at one side end of the traveling body, and one of the first and second moving coils is disposed between two pairs of ball bearings disposed at one side end of the traveling body. The linear motor is disposed immediately after a pair of ball bearings disposed at the other side end of the traveling body, and the thrust center of the linear motor is located immediately after the optical head mounted on the traveling body. An optical disk drive device featuring: (3) Utility model registration Claim 2, wherein one of the pair of ball bearings is given a biasing force in the direction of the first or second guide rod with which it is in contact. An optical disk drive device characterized by: