JPH03219474A - Disk device - Google Patents

Abstract

PURPOSE:To eliminate the need of a special power source for locking or releasing a head by loading and unloading a disk with the aid of the reciprocating action of a guide frame and locking and releasing the head corresponding to the reciprocating action of the guide frame. CONSTITUTION:When a cartridge for storing a disk is situated to a loading position, the locking lever 4 is turnably supported around a turning shaft 14 and energized clockwise by a spring 19 in the guide frame 16. A cam 18 is fixed to the right lower part of the frame 16 and the lower end part of the lever 4 abuts on the inclined surface of the cam 18. Then, the positioning thereof is executed. Since a waveform surface on the right side of the lever 4 and a pin to be locked 3 projectively provided on the left side surface of the head 2 are isolated by this positioning, the head 2 is under a released state. On the other hand, at an inacting time, the frame 16 is positioned upward than before and the disk 6 is unloaded from the device. Under such a state, the lower end part of the lever 4 abuts on the vertical surface of the cam 18 and the waveform surface of the lever 4 abuts on the pin 3. As the result, the head 2 is locked.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a disk device that locks the head during non-operation, particularly during transportation, to prevent damage that may occur due to movement due to vibration or impact. Note that the disk device includes all magnetic disk devices, optical disk devices, magneto-optical disk devices, and the like.

[Conventional technology]

One conventional example will be described with reference to FIG. 6, which is a plan view thereof. In FIG. 6, the head 2 corresponding to the disk 6 indicated by the two-dot chain line is driven to run in the radial direction of the disk 6. This travel is guided by a pair of mutually parallel guide rails 12, and the travel drive is performed by a voice coil motor consisting of a magnetic field generating means 21 and a coil 22 fixed to the head 2. Note that the travel range of the head 2 is limited by the stoppers 13 made of an elastic material fixed to both ends of each guide rail 12 without being subjected to impact. A locking pin 3 is protruded from the left side surface of the head 2, and a locking plate 32 having a corrugated surface is fixedly located at the tip of the solenoid 31 in correspondence with the locking pin 3. By turning on and off this solenoid 31, the locking plate 32 assumes the position indicated by a solid line or the position indicated by a broken line. Take a stop action. That is, when the disk device is in operation, the solenoid 3I
is turned on, the head 2 is released and can run freely along the guide rail 12, and when not in operation, especially during transportation, the solenoid 31 is turned off and the head 2 is locked. This lock prevents the head 2 from moving due to vibrations or shocks during non-operation, particularly during transportation, thereby preventing the risk of damage. Another conventional example will be described with reference to FIG. 7, which is a front view thereof. In FIG. 7, as in the conventional example shown in FIG. It is driven by a coil motor. In this other conventional example,
The cartridge used during non-operation or transportation has the same shape as the actual cartridge, but has a friction plate 32 on its underside.
This is a dummy cartridge 33 to which is fixed a dummy cartridge 33 for use only during non-operation or transportation. That is, during non-operation or transportation, the dummy cartridge 33 is installed in place of the actual cartridge. At that time, the dummy cartridge 33 moves from the position indicated by the solid line to the position indicated by the two-dot chain line corresponding to when it is installed, and the friction plate 33
The lower surface of the head 2 presses against the upper surface of the head 2, and the movement of the head 2 is prevented by the friction. Of course, during operation, the actual cartridge must be replaced again. Although the disk device was not specified in the above description, the invention is generally applicable to all magnetic disk devices, optical disk devices, magneto-optical disk devices, etc.

[Problem to be solved by the invention]

In the conventional example as described above, a special power source called a solenoid is required, and a special power source is required for that purpose, which hinders the cost reduction of the device. Also,
In another conventional example, a dummy cartridge is required, which makes handling and management more troublesome. If dummy cartridges are not properly stored when not in use, they may be lost and become useless when needed. The object of this invention is to solve the problems of the prior art, to eliminate the need for a special power source, to simplify handling and management, and to lock the head during non-operation, especially during transport. An object of the present invention is to provide a disk device that prevents damage that may occur due to movement caused by vibrations and shocks.

[Means to solve the problem]

In order to solve this problem, a disk device according to the present invention includes a guide frame on which a disk stored in a cartridge is mounted after being transferred to a predetermined position, and includes: a blocked tool provided on the side surface of the head; For example, a pin for mooring or a friction piece; a blocking device that can approach and separate from the blocking device substantially perpendicular to the running direction of the head, such as a plate with a locking surface;
or a plate with a friction surface; movement restraining means provided on the guide frame corresponding to a predetermined portion of the blocking device, such as an end portion, or a roller portion, such as an end portion of the blocking device is pressed into contact with the movement restraining means; A surface cam or a grooved cam into which the roller portion of the blocking device is fitted and guided; and when the guide frame is not in the predetermined position for the mounting,
The predetermined portion of the blocking device is constrained by the movement restraining means to approach or come into contact with the blocked device and lock the head, and when the guide frame is at a predetermined position related to the mounting, the blocking device A predetermined portion of the tool is restrained by the movement restraining means, thereby separating the tool from the blocked tool and releasing the head.

[Effect 1] When the guide frame is not in the predetermined position related to installation, the predetermined portion of the blocking device is restrained by the movement restraint means, and as a result,
The helad is locked by approaching or coming into contact with the tool to be blocked. Further, when the guide frame is in a predetermined position related to mounting, the predetermined portion of the blocking device is restrained by the movement restraining means, and as a result, the head is separated from the corrugated stop and released. Embodiments An embodiment of a disk device according to the present invention will be described below with reference to the drawings. The key point of this embodiment is that the disk is loaded and unloaded by the reciprocating movement of the guide frame, and the head is locked (blocked) and released in response to the reciprocating movement of the guide frame. FIG. 1 is a plan view of the embodiment during operation. In this embodiment, the guiding and driving of the head 2 in its travel is performed by the same members or mechanisms as in the conventional example. Therefore, detailed explanation will be omitted, and the same members will be given the same reference numerals. The guide frame 16 in FIG.
is attached to the shaft of the rotation motor 11. That is, the guide frame 16 is pushed into the device,
In other words, it is located at a position moved downward in the figure. Furthermore, a guide frame 1
The operation of step 6 will be described in detail later. Now, the locking lever 4 is rotatably supported around a rotation shaft 14 and biased clockwise by a spring 19. A cam 1 having an inclined surface and a vertical surface is located at the lower right of the guide frame 16.
8 is fixed. In FIG. 1, the lower end of the locking lever 4 comes into contact with the inclined surface of the cam 18, and is positioned slightly obliquely. Due to this positioning, the corrugated surface on the right side of the locking lever 4 and the locking pin 3 protruding from the left side surface of the head 2 are separated, so that the front seat 2 is in a released state. It is possible to run freely. FIG. 3 is a front view of the embodiment. In FIG. 3, the head 2, its guide rail 12, and the stopper 13 fixed thereto are the same as in the conventional example, and a guide frame 16 and a cartridge 7 are inserted and held outside of the head 2. The positional relationship with the holder 5 is shown. Note that the cartridge 7 is indicated by a two-dot chain line indicating the position when the disk is attached, and the solid line indicating the position when the disk is removed. Also, a state in which the cam 18 is fixed to the guide frame 16 and the locking lever 4 is in contact with the cam 18 is shown. FIG. 2 is a plan view of the embodiment when it is not in operation. Second
In the figure, the guide frame 16 is located higher than in FIG. 1, and the disk 6 has been removed from the device. In this state, the lower end of the locking lever 4 contacts the vertical surface of the cam 18, and the corrugated surface of the locking lever 4 and the pin 3 contact and engage.
Movement of the head 2 is prevented, that is, locked. By the way, the locking lever 4 of this embodiment is of a type in which its lower end and the surface of the cam 18 are brought into contact with each other by the force of a spring 19, so that the movement of the locking lever 4 is restricted. Although not shown, it is also possible to use a system in which a roller provided at the lower end of the locking lever 4 fits into a grooved cam to restrict the movement of the locking lever 4. Further, the locking method is different from the abutment and engagement between the pin and the corrugated surface as in the embodiment, and a method using friction based on pressing contact between the two is also possible. Next, the operation of the guide frame 16 will be explained with reference to FIGS. 4 and 5. FIG. 4 is a perspective view showing the operation of the guide frame. In FIG. 4, substrates 15 are installed parallel to each other on the image side of the base 1. The holder 5 on which the disk cartridge 7 is placed moves inside the two substrates 15 in the longitudinal right direction and is mounted on the substrate 15 at a predetermined position. Note that when taking out the cartridge 7, the holder 5 moves in the opposite direction to that described above. At this time, the holder 5 is driven by the guide frame 16 which is driven in a straight line, and its movement is restricted by the substrate 15. That is, the guide frame 16 corresponds to a driving part shrine, the boulder 5 corresponds to a driven member, and the board 15 corresponds to a movement restriction member. The substrate 15 has a hook-shaped guide hole 15d and a linear guide hole 1.
Two sets of 5b are opened. The holder 5 is a cylindrical plate member with a flat rectangular cross section, and a cartridge 7 is placed on the bottom surface of the holder 5, and pins 6 are provided upright on each side wall surface on both sides. The guide frame 16 is a plate-shaped member bent into a U-shape, and two guide holes 16a are bored in each leg on both sides of the guide frame 16, and two pins 17 are erected on the outer surface of each leg. Ru. Pin 17 is guide hole 1
5b, and the pin 6 engages with each guide hole 16a, 15a. Note that the relationship between each engagement is represented by a chain line. Therefore, the holder 5 is located at the innermost position, the guide frame 16 is located at the outer side of the holder 5, and the board 15 is located at the outer side thereof. By the way, the drive unit 10 including the pinion 9 on the surface of the base 1
is attached, a rack 8 is attached to the lower surface of the bottom plate of the guide frame 16, and this rack 8 and pinion 9 mesh with each other. Therefore, the guide frame 16 is driven in a straight line by the drive unit 10. FIG. 5 is an explanatory view of the operation of the guide frame 16 of this embodiment. FIG. 5(a) is a side view of the main part before cartridge mounting, FIG. Figure (C) is a side view of the main parts when the attachment is completed. In addition, in FIG. 5, the substrate 15
The position of the guide frame 1 is represented by each guide hole 15a, 15b.
6 position (movement) is represented by guide hole 16a1 bottle 17,
The position (movement) of the holder 5 is represented by a bottle 6, respectively. When the bin 17, that is, the guide frame 16 is moved to the right from the leftmost position (see FIG. 5(a)),
After passing through the state shown in FIG. 13(b), the state finally reaches the state shown in FIG. 10(C). This series of operations corresponds to cartridge mounting. That is, the bottle 17 moves along the guide hole 15b, but the guide hole 16a first moves the pin 6 horizontally along the lateral part of the guide hole 1.5a (see FIG. It is moved vertically downward along the vertical portion of the hole 15a (see (C) in the same figure). Cartridge removal is performed by a series of operations in the opposite direction to the above.

【Effect of the invention】

Therefore, the present invention has the following superior effects compared to the conventional technology. (1) Damage to the head, and thus the device, which may be caused by movement due to vibrations and shocks during non-operation, especially during transportation, is completely prevented. (2) Because it uses the original operation of the disk device,
Not only is a special power source not required, but the structure is simplified, and reliability can be improved, downsizing, especially thinness 1 2 , and cost can be reduced.

[Brief explanation of drawings]

Fig. 1 is a plan view of the embodiment according to the present invention when it is in operation, Fig. 2 is a plan view of the embodiment when it is not in operation, Fig. 3 is a front view of the embodiment, and Fig. 4 is a diagram of the guide frame of the embodiment. FIG. 5 is a perspective view showing the operation, and FIG. 5 is an explanatory diagram of the operation of the guide frame of the embodiment. FIG. FIG. 6(C) is a side view of the main part when the installation is completed, FIG. 6 is a plan view of one conventional example, and FIG. 7 is a front view of another conventional example. Code explanation 2: Head, 3: Pin, 4: Locking lever 5: Holder, 6
: Disk, 7: Cartridge, 11: Motor, 12:
guide rail, 13: stopper, 14: rotating shaft, 16: guide frame, 18: cam, 19: spring, 21: magnetic field generating means,
22: Coil. 7C

Claims (1)

[Claims] 1) A device equipped with a guide frame on which a disk stored in a cartridge is mounted after being transferred to a predetermined position; a device to be blocked provided on a side surface of the head; and a device to be blocked substantially perpendicular to the running direction of the head. a blocking device that can approach and isolate the device; and a movement restraint means provided on the guide frame corresponding to a predetermined portion of the blocking device; A predetermined portion of the blocking tool approaches or comes into contact with the blocked tool by being restrained by the movement restraining means to lock the head, and when the guide frame is at a predetermined position related to the mounting, the blocking tool 2. A disk device according to claim 1, wherein a predetermined portion of the head is restrained by the movement restraining means to separate the head from the blocked tool and release the head.