CN2585361Y - Magnetic disc inertial locking means - Google Patents

Abstract

The utility model relates to a magnetic disc inertial locking means which is used for keeping an actuator of a disc drive in a proper place when the disc drive is in a non-working state. The utility model comprises an inertial main body which can be pivoted and an inertial locking device, wherein the inertial locking device comprises an arm part and a spring. The arm part is positioned on the inertial main body, and the spring is installed on the arm part. The inertial locking device can lock the actuator when the disk drive is subjected to inertial impact and can drive the actuator after the inertial impact.

Description

Disk inertia lock

[technical field]

The utility model relates to a kind of disk inertia lock, relates in particular to a kind of disc driver that can be used for portable computer, Hand Personal Computer or other personal computers, the inertia lock of simple in structure, dependable performance and not power consumption.

[technical background]

In computer system, information often is stored on a hard disk or the floppy disk thin magnetic film surface.These information are to be stored on the concentric track, can realize reading of information by a magnetic head assembly.When storing or reading information, head gimbal directly contacts with magnetic disk surface to avoid magnetic head on the air-supported layer of the disk of high speed rotating.

In most disc driver, magnetic head all is mounted near the end of an actuator.Widely used actuator has linear pattern and rotary-type two kinds in the prior art.In the linear pattern actuator, magnetic head is at first over against the central authorities of disk, then actuator along disk radial direction straight line move with head position at preposition.And in rotary-type actuator, actuator rotates near the circumference of disk around rotation center, with this with head position at preposition.

When disc driver was not worked, magnetic head left the data field of disk.Disc driver can be divided into two kinds on dynamic importing type and contact start and stop type according to the ground that this moment, magnetic head was parked.In dynamic importing type disc driver, when the disc driver inoperation, magnetic head returns to a place away from disk, such as is parked on the oblique rail structure; And in contact start and stop type disc driver, when disc driver was not worked, magnetic head rested in the non-data field of disk central authorities.Magnetic head and disk any improper contacts the scuffing that all may cause disk, therefore is locked in magnetic head on the above-mentioned oblique rail structure reliably or is very important in the non-data field of disk central authorities.

The structure that has had many lock actuator in the prior art.In some disc driver, its actuator is by a magnetic devices or snap switch fixing when outage, and when disc driver is switched on, make actuator drive the data field that magnetic head moves to disk thereby the motor of actuator overcomes the retain strength of magnetic devices or snap switch.If yet said structure is the influence that is given a shock, when off working state, causes contacting of magnetic head and disk thereby its actuator may break away from the constraint of magnetic devices or snap switch.

Also have a kind of structure that relies on snap switch and solenoid to come lock actuator, when solenoid non-energized, snap switch is locked in the precalculated position with actuator, and after the solenoid energising, can discharge the actuator that is locked by snap switch.Although this design can avoid the influence that shakes, solenoid to have cost height, unreliable and shortcoming that power consumption is big.Correlation technique please refer to United States Patent (USP) the 4th, 716, and No. 480 and 4,725, No. 907.

Rotary-type actuator is given a shock and the influence of acceleration especially easily.But owing to when the rotary-type actuator of design, can make actuator reach balance with respect to the point of rotation, simple translation vibrations will act on the both sides of the point of rotation simultaneously and actuator is affected.Smaller non-equilibrium factor such as the error that causes because of manufacturing, also is not enough to actuator is exerted an influence.But the inertial force that the rotation vibrations cause then is easier to cause waving of actuator, so just probably magnetic head is contacted with disk, therefore, need provide a kind of safeguard measure to overcome this inertial force.For portable computer, they operate in particular environment especially, very easily are subjected to rotating the influence of vibrations in the process that moves, so more need to provide this safeguard measure that overcomes inertial force.

[summary of the invention]

The purpose of this utility model is to be to provide a kind of disk inertia lock with simple in structure, dependable performance and not power consumption.

The purpose of this utility model is achieved through the following technical solutions: one when being used to make disc driver to be in off working state, and its actuator is remained on the disk inertia lock of appropriate location, and it comprises a pivotable inertia body; One inertia locking device, comprise an arm and a spring, this arm is positioned on this inertia body, and this spring is installed on this arm, this inertia locking device can be when disc driver be subjected to inertia impact lock actuator, and can be behind inertia impact and driving actuator.

The advantage of the utility model disk inertia lock is: compared with prior art, this inertia lock is simple in structure, and dependable performance and not power consumption are specially adapted to use the portable computer disc driver of battery.

[description of drawings]

With reference to the accompanying drawings, in conjunction with the embodiments the utility model is further described.

Fig. 1 is the overall vertical view of the utility model disk inertia lock.

Fig. 2 A is the top view of the utility model disk inertia lock.

Fig. 2 B is the lateral plan of the utility model disk inertia lock.

Fig. 3 is the enlarged drawing of overlooking of the utility model disk inertia lock.

Fig. 4 is the side zoomed-in view of the utility model disk inertia lock.

Fig. 5 is the user mode reference diagram of the utility model disk inertia lock.

Fig. 6 is the assembling process reference diagram of the utility model disk inertia lock.

[embodiment]

Please refer to Fig. 1, a dynamic importing type disc driver 10 comprises a body 10C, a disk 11 and a rotary-type actuator 12.A magnetic head 14 is installed one end of this actuator 12 and the end that closes on actuator 12 is provided with an inertia lock 200.This inertia lock 200 comprises an arm 201 and a pawl 202.This arm 201 is provided with a surface of contact 203 and this pawl 202 is provided with a claw hook 204.This inertia lock 200 can be pressed into or screw lock is gone into rotating shaft 205 rotation of actuator body 10C around one, and between its arm 201 and pawl 202, be provided with an external impact and stop piece 206, and can cooperate with finger tip 26 on the actuator 12 by the projection 207 on it, excessive to avoid actuator 12 to rotate in a clockwise direction.

See also Fig. 2 A and Fig. 2 B, the inertia maximum keeps its volume minimum simultaneously when making 200 rotations of this inertia lock, and it is less that its centre (drawing the oblique line part) compares other position thickness.

See also Fig. 3 and Fig. 4, the top of this inertia lock 200 is provided with the about 0.005 inch arcuation spring 208 of a diameter, it is installed near in the groove 209 at rotating shaft 205 tops, one end of this arcuation spring 208 is core spaces 210 that are installed in this inertia lock 200, the other end then is to insert in the slot 211 that is installed on the actuator body 10C, in the time of can reaching the installing of this arcuation spring 208 and this inertia lock is rotated in a clockwise direction by above-mentioned device, drive surface of contact 203 and contact with external impact stop piece 206.

See also Fig. 5, when disc driver 10 suffers a clockwise inertia impact, this inertia lock 200 touches the surface that external impact is stopped piece 206 with counter rotation until the inside of brake rod 202 cutting edge.At this moment, claw hook 204 will cooperate with finger tip 26 to avoid actuator 12 rotations.In case inertia impact is gone over, this arcuation spring 208 will make this inertia lock 200 return initial bit and make surface of contact 203 and external impact stop piece 206 and contact.Being provided with on the one hand of this arcuation spring 208 makes the friction force minimum, makes actuator 12 can reach maximum for the reaction velocity of inertia impact on the other hand.

See also Fig. 6, this inertia lock 200 only is that simply to be installed in arcuation spring 208 in the rotating shaft 205 then be in groove 209 and the slot 211 that is installed on the core space 210.This inertia lock 200 is stopped piece 206 installings prior to external impact and but surface 213 blocks of actuator body 10C are located this inertia lock 200, can make the installing of actuator 12 more easy with the installing of this kind order.

Claims (6)

1. disk inertia lock, be mounted on the disc driver, with the inertial impact force that suppresses to produce when its rotary-type actuator rotates, it comprises that one can be around the inertia body and an inertia locking device of a rotation, it is characterized in that: described inertia locking device comprises an arm and an elastic body, described arm is positioned on the described inertia body, described elastic body is installed on the described arm, the two cooperation can be when disc driver be subjected to inertia impact lock actuator, and can be behind inertia impact and driving actuator.

2. disk inertia lock as claimed in claim 1, it is characterized in that: also comprise a pawl on the described inertia body, its free end is a claw hook, and described claw hook can be buckled on the described actuator when described disc driver is subjected to the rotatory inertia impulse force.

3. disk inertia lock as claimed in claim 1, it is characterized in that: comprise a brake assemblies on the running orbit that is positioned at described arm and pawl between described arm and the pawl, it can be when disc driver rotates, make described inertia body along with the corresponding rotation of disc driver by stopping action, and described brake assemblies can limit described inertia body and rotate between extreme first and second, described first extremely appears at described arm when touching described brake assemblies, and described second when extremely appearing at described pawl and touching described brake assemblies.

4. disk inertia lock as claimed in claim 3 is characterized in that: when described elastic body is not subjected to the rotatory inertia impulse force at disc driver, described inertia body is remained on the described first extreme position.

5. disk inertia lock as claimed in claim 4 is characterized in that: described elastic body is an arcuation spring, and the one end is fixed on the described inertia body, and the other end is fixed on the described disc driver body, and it is partial to described inertia body.

6. disk inertia lock as claimed in claim 5 is characterized in that: engaging between described arcuation both ends of the spring has one and described inertia body can be rotated around it, and described axle one end is to be pressed into or screw lock is gone into described disc driver body.

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