JPH0320926Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is applied to a disk drive device that records and reproduces information by rotationally driving an information recording medium formed in the shape of a disk, such as a magnetic disk or an optical disk. More specifically, the present invention relates to a disk drive device that prevents malfunctions by defining the position of a holder.

[Conventional technology]

Among disk drive devices that record and reproduce information on a disk-shaped information recording medium (hereinafter referred to as a disk), a disk cartridge (hereinafter referred to as a disk drive device) stores the disk in a hard case made of synthetic resin, for example. This cartridge is inserted into a cartridge holding means such as a cartridge holder (hereinafter abbreviated as holder) of a disk drive device, and the disk is placed on a predetermined rotating means through the holder. In the case of devices that are installed to perform recording and playback, the disk is housed in a hard case, and various attempts have been made to autoload the disk because it can be handled indirectly through the case. ing.

As an example of this, the present applicant
There is a disk drive device proposed as

This disk drive device includes a frame 1, a housing 2 that is attached to a predetermined position of the frame 1 from the bottom side in the figure of the frame 1, and a slide plate that is slidably attached to the upper surface of the frame 1 on the side where a disk cartridge 3 is inserted. 4, and a holder 7 that engages with a cam portion 6 of a side wall 5a formed on the side surface of the slide plate 4 and holds the disk cartridge 3.
, a slide plate drive mechanism 58 that is located on the top surface of the frame 1 and drives the slide plate 4, and a housing 2.
A motor (not shown) rotatably drives the turntable 9, which is located on the lower surface and protrudes toward the upper surface, and constitutes a disk drive mechanism together with the turntable 9, and a carriage, which is located on the upper surface of the housing 2 and is transported in the radial direction of the disk. 12, and a transfer mechanism 14 for transferring the carriage 12 by a stepping motor 13.

13, 17, and 18, on the cartridge insertion side A of the frame 1, there is a cam part 6 consisting of an inclined cam part 6a and a parallel cam part 6b, a side wall 5b on the right side in the drawings in which a guide groove 5c is formed; The slide plate 4 is attached with a side wall 5a on the left side in the figure in which guide grooves 5c are formed at several locations. This slide plate 4 further includes a frame 1.
A guide groove 25 that engages with the positioning pin 24 of the cartridge 3 protruding from the top surface, and a guide groove 26 that engages with the pin 27 provided on the top surface of the frame 1 are formed, and the slide plate 4 fits into the guide groove. It is slidable along 25 and 26. In addition, slide plate 4
is always biased toward the cartridge insertion side A by a spring (not shown).

A side plate 1a is formed rising from both sides of the frame 1, and a locking member 1b whose tip is biased toward the lower side of the frame 1 by a spring 28 is provided inside the side plate 1a.

As shown in FIGS. 13 and 16, the holder 7 into which the cartridge 3 is inserted has U-shaped cartridge holders 7a and 7b on both sides, and an elastic thin plate that connects the cartridge holders 7a and 7b. A cartridge insertion opening 7d is formed integrally with a connecting portion 7c, and a cartridge insertion opening 7d is formed on the cartridge insertion side A.
It is equipped with The cartridge holding parts 7a and 7b of the holder 7 are further formed with a fixed protrusion 57e that engages with the guide groove 5c and a movable protrusion 57f that engages with the cam part 6, and the moving stroke of the movable protrusion 57f is as follows. is defined by the length of a guide groove 7h formed on the side surface of the holder 7 and in which the movable protrusion 57f can move, and is set to be shorter than the movement stroke of the slide plate 4. This stroke difference is ensured at least by the length of the inclined cam portion 6a of the cam portion 6 in the stroke direction.

The operation of the main parts of the disk drive device roughly configured as described above will be explained.

First, when loading the cartridge 3 by inserting the cartridge 3 as shown in FIG.
f is located at the upper part of the inclined cam part 6a of the cam part 6, respectively. When the motor of the slide plate drive mechanism 58 is rotated from this state to move the slide plate 4 to the right in the figure, the fixed protrusion 57e is located in the guide groove 5c and the movable protrusion 57f is moved as shown in FIG. is located on the parallel cam portion 6b, and the holder 7 is lowered toward the turntable 9 to load the disk and enable recording and reproduction. When ejecting, the slide plate 4 returns to the cartridge insertion side A, that is, to the left, and the fixed protrusion 57e and the movable protrusion 57f return to the upper end surface and the inclined cam portion 6a, respectively.
The holder 7 rises, and the cartridge 3 is further ejected from the holder 7. In this process, the moving protrusion 57
f constantly engages with the cam part 6 and moves, and the fixed protrusion 5
7e is adapted to move while being pressed against the upper end surfaces of the side walls 5a, 5b by the locking member 1b.

This locking member 1b is connected to the fixing protrusion 5 of the holder 7.
7e against the upper end surfaces of the side walls 5a and 5b to ensure that the holder 7 moves up and down, and even when a force that pulls the cartridge 3 upward (in the direction of arrow B in the figure) is applied during operation. , the holder 7 is prevented from moving in the direction of arrow B by the elastic force of the spring 28 that urges the locking member 1b clockwise in the figure. This is because if the holder 7 moves in the direction of arrow B, the magnetic head 19 mounted on the hold case 12a may come into contact with a part of the case of the cartridge 3 and be damaged. Further, if the holder 7 comes off the upper end surface of the side walls 5a, 5b during return, there is a risk that subsequent operation will be impossible, and the locking member 1b functions effectively to prevent this.

[Problem that the invention attempts to solve]

By the way, in the case of the above-mentioned locking member 1b, since this holding action is constituted by two parts, the locking member 1b and the spring 28, there is room for improvement in terms of the number of parts. Further, although the holder 7 has the effect of holding down the holder 7 against the force applied during normal operation, there is a risk that it may move in the direction of the arrow B when an unintended strong external force is applied. In order to improve this, if the elastic force of the spring 28 is increased, the force pressing the fixing protrusion 57e becomes too strong, impairing the smoothness of the movement, and there is a certain range in which smoothness of the movement and upward movement can be prevented. It was naturally limited to springs with an elastic force of .

This invention was made in view of the actual state of the prior art described above, and its purpose is to provide a disk drive device that can prevent the holder 7 from moving upward. Another object of the present invention is to provide a disk drive device that can prevent the above-mentioned movement using a minimum number of parts.

[Means for solving problems]

In order to solve the above problems and achieve the objective, this invention consists of a holder that holds a disk cartridge containing a disk-shaped information recording medium, which has protrusions protruding from its side, and a frame that moves back and forth on the frame. and a slide plate having a cam part on which the protrusion can slide, and in the process of reciprocating the slide plate, the protrusion is moved on the cam part to adjust the holder according to the cam shape. performs lifting and lowering operations,
In a disk drive device that performs recording/reproduction by placing the information recording medium on a rotating means by a downward movement of a holder, an upward movement of the protrusion relative to the slide plate is provided on the disk cartridge insertion side of the cam portion. It is configured to include a guide section for regulating.

[Effect]

According to the above means, even if the holder is subjected to an upward force against the slide plate, the protrusion will not come into contact with the guide portion and move upward, thereby causing malfunction or damage to the magnetic head. There isn't. Further, since there is no movable member, it is possible to form the guide portion integrally with the slide plate, and the number of parts can be reduced.

〔Example〕

An example of implementing this invention will be described below based on the drawings.

1 to 11 are for explaining the disk drive device according to this embodiment, and FIG. 1 is a partially cutaway side view of the disk drive device;
Fig. 2 is a plan view of the slide plate, Fig. 3 is a plan view of the slide plate, Fig. 4 is a right side view thereof, Fig. 5 is a left side view showing the main parts, Fig. 6 is a plan view of the holder, FIG. 7 is a side view thereof, FIGS. 8 to 11 are side views showing the operation, and FIG. 12 is a plan view of the main part showing the operation. In the figure, 1 is a frame, 3 is a cartridge, 4 is a slide plate, 5a and 5b are side walls of the slide plate, 6 is a cam part, 6a is an inclined cam part, 6b is a parallel cam part, 6t is a guide part, and 7 is a holder. ,7e,7
f is a roller, 9 is a turntable, and 12 is a carriage. In addition, in the following description, each part that is the same as or can be considered to be the same as that of the conventional example is given the same reference numeral.

A schematic configuration of a disk drive device embodying this invention will be described with reference to FIGS. 1 and 2.

The disk drive device shown as an example mainly includes a frame 1, a housing 2 that is attached to a predetermined position of the frame 1 from the bottom side in the drawing of the frame 1, and a housing 2 that slides on the top surface of the frame 1 on the side where a disk cartridge 3 is inserted. The disk cartridge 3 is engaged with a cam portion 6 of a side wall 5a formed on the side surface of the slide plate 4, which is attached to the slide plate 4 so that it can be attached.
a holder 7 for holding the holder 7, a motor that rotatably drives the turntable 9 that is located on the bottom surface of the housing 2 and protrudes toward the top surface side and constitutes a disk drive mechanism together with the turntable 9; A carriage 12 that is transferred in the radial direction, a transfer mechanism 14 that transfers the cartridge 12 by a stepping motor 13, and an auto-eject mechanism 8 that has a manual eject function that allows the cartridge 3 to be ejected manually.
The structure is almost the same as that of the conventional example.

1 and 2, on the upper surface of the cartridge insertion side A of the frame 1, a slide plate 4 is always biased toward the cartridge insertion side A by a spring (not shown) stretched on the lower surface side of the frame 1.
is slidably attached via a positioning pin 24 protruding from the upper surface of the frame 1. As shown in FIGS. 3, 4, and 5, this slide plate 4 has a rear side of the frame 1 (hereinafter, the cartridge insertion side A of the frame 1 is referred to as the front, and the side where the stepping motor 13 is attached is referred to as the rear). A guide groove 25 that engages with the positioning pin 24 is provided, and a mounting shaft 44a is provided on the front side to which a holder control lever 44 for controlling the reciprocating movement of the holder 7 is attached. Then, the slide plate 4 is moved from the positioning pin 24 to the side of the frame 1, which will be described later.
The width direction is regulated between the side plate 1a that projects upward, and the back and forth reciprocation is possible.

Furthermore, as shown in FIGS. 4 and 5, side walls 5a and 5b of the slide plate 4 are formed with cam portions 6 on which rollers 7e and 7f attached to the side surfaces of the holder 7 (to be described later) roll. The rear side of the portion 6 is a downwardly inclined inclined cam portion 6a, and the front side is a parallel cam portion 6b parallel to the upper surface of the frame 1. Of this cam part 6, the cartridge insertion side A
At the front end of the parallel cam portion 6b, a guide portion 6t as shown in FIGS. 1, 4, and 5 is provided in a substantially U-shape, and the roller 7e It is designed to be able to slide in a groove 6s formed between the two.

The cartridge 3 is inserted, and the holder 7 that holds it connects U-shaped cartridge holding parts 7a, 7b on both sides and the cartridge holding parts 7a, 7b, as shown in FIGS. 2, 6, and 7. It is integrally formed with a connecting portion 7c made of an elastic thin plate, and has a cartridge insertion opening 7d on the cartridge insertion side A. On the side surfaces of the cartridge holding parts 7a and 7b of the holder 7, there are engagement protrusions that are engaged with rollers 7e and 7f that roll on the cam part 6 and a spring 32 that biases the holder 7 toward the turntable 9. 7g is provided. These rollers 7e, 7
f is attached for the purpose of reducing frictional resistance with the cam portion 6, and it goes without saying that it may be simply a protrusion provided on the side surface, for example. Holder 7
On the rear end side of the right side cartridge holding part 7a, there is a
A mounting groove 7i having an engaging portion is formed, and a plate-shaped support member 29 for raising and lowering the hold case 12a on which the upper magnetic head is mounted relative to the carriage 12 is inserted from the rear into this mounting groove 7i. It is designed so that it can be installed. A protrusion 7h that can be locked with a locking portion 44e of a holder control lever 44, which will be described later, is vertically provided on the disk cartridge insertion opening 7d side of the lower surface of the holder 7.
Moreover, at the rear end of the left cartridge holding part 7b,
A mounting portion 7j for mounting the engagement lever 30 as shown in FIG. 2 is formed.

This engagement lever 30 has an arm portion 30b provided with a protrusion 30a that engages from the side surface side with an engagement groove 3a that is open on the side surface of the cartridge 3 and formed on the bottom surface side.
and a locking portion 30d of the spring 30c.
The spring 30c is rotatably attached to the mounting portion 7j by a screw 0e, and the spring 30c is connected between the rear end 7k of the side surface of the cartridge support portion 7b of the holder 7 and the locking portion 30d.
The protrusion 30 of the arm portion 30b is stretched between the
The locking portion 30d is biased toward the side surface of the cartridge support portion 7b so that the portion a is always located inside the holder 7. Further, the upper surface of the engagement lever 30 contacts and presses a protrusion 4b protruding toward the rear side of the left side wall 5a of the slide plate 4, and the arm portion 30b resists the elastic force of the spring 30c. A protruding piece 30f is formed to displace the holder 7 to the outside of the holder 7.

An eject plate 34 is rotatably provided on the rear side of the cartridge holding portion 7a of the holder 7, with its distal end 34b biased toward the cartridge insertion side A by a spring 34a.

The operation of the disk drive device roughly configured as described above will be explained next.

FIG. 8 shows a state in which the holder 7 is in an upper position away from the turntable 9. At this time, as shown in FIG. 2, the holder 7 is at the forwardmost position with respect to the frame 1, and this position is located at the engagement portion 44e of the holder control lever 44, and the projection 7h vertically provided on the lower surface of the holder 7. It is defined by the engagement of the two. At this time, the roller 7e of the holder 7
is located at the frontmost part of the horizontal cam part 6b, and the guide part 6
The upper position is defined by t. When the cartridge 3 is inserted into the holder 7 from the state shown in FIG. 8, as shown in FIG. is engaged with the engagement groove 3a of the cartridge 3, and the cartridge 3 is fixed to the holder 7. All operations up to this point are performed by input. Since the holder 7 does not move at all until the cartridge 3 is fixed in the holder 7, as shown in FIG.
It is located within the groove 6s defined by.

Then, if you push it slightly from the state shown in Figure 12,
A protrusion 43d that interlocks with a locking means not particularly explained.
is pressed by the cartridge 3 to release the lock of the locking means, and the spring 32 and the holder control lever 44,
The holder 7 automatically moves rearward and the slide plate 4 moves forward due to the elastic force of a spring (not shown). In this case, the holder control lever 44 converts the force that moves the slide plate 4 forward into the force that moves the holder 7 backward, defines the relative positional relationship between the slide plate 4 and the holder 7, and performs a predetermined operation. It is designed to do this. Due to this relative movement, the rollers 7e and 7f reach the inclined cam portion 6a as shown in FIG. 10, and further reach the bottom of the inclined cam portion 6a as shown in FIG. 11, and the holder 7 is in the lowest position. , the disc is loaded onto the turntable 9, and recording and playback becomes possible.

In this process, the roller 7e comes off the guide portion 6t, but at this time the autoloading operation has already begun and it is no longer possible to apply force to the holder 7 artificially. Therefore, there is no possibility that the holder 7 will be displaced upwardly about the roller 7f with respect to the slide plate 4.

When the recording/playback is completed, the eject mechanism 8
The slide plate 4 is moved rearward and the holder 7 is moved forward via the holder control lever 44. During this process, the rollers 7e and 7f move up the inclined cam portion 6a, and the cartridge 3 returns to the position separated from the turntable 9. Then, the state returns to the state shown in FIGS. 9 and 12, and the protrusion 30a of the engagement lever 30 disengages from the engagement groove 3a, and the cartridge 3 is moved by the elastic force of the spring 34a that biases the eject plate 34. automatically ejected. When the cartridge 3 is pushed out by the ejection plate 34, the roller 6e is already regulated by the guide portion 6t, so even if an unintended external force is applied, the holder 7 will not be displaced upward. .

In the above embodiment, the guide portion 6t was provided only on the cartridge insertion side A of the slide plate 4 in consideration of ease of assembly, and a similar guide portion was provided on the cam portion 6 on the rolling portion side of the roller 7f. This is because if 6t is provided, the protrusion serving as the guide portion will get in the way, making assembly difficult and leading to an increase in assembly time. Further, the reason why the guide portion 6t is formed only to the necessary minimum extent is due to the same reason.

[Effect of idea]

As described above, according to this invention in which a guide part is provided on the cartridge insertion side of the slide plate to restrict upward displacement of the protrusion such as a roller protruding from the side surface of the holder with respect to the slide plate, unintended external force It is possible to prevent the holder from being displaced upward by the magnetic head, thereby preventing damage to the magnetic head and malfunction of the disk drive device. Further, since the guide portion can be formed integrally with the slide plate, the above-mentioned effects can be achieved with a minimum number of parts, and costs can be reduced.

[Brief explanation of drawings]

Figures 1 to 12 are for explaining an embodiment of this invention. Figure 1 is a side view with a part of the disk drive device cut away, Figure 2 is a plan view thereof, and Figure 3 is a side view of the disk drive device. A plan view of the slide plate, FIG. 4 is a right side view thereof, FIG. 5 is a left side view showing the main parts, FIG. 6 is a plan view of the holder, FIG. 7 is a side view thereof, FIGS. 9, 10, and 11 are side views showing the operation, FIG. 12 is a plan view of the main part showing the operation, and FIGS. 13 to 18 are for explaining the conventional example. 14 is a plan view of a conventional disk drive device, FIG. 14 is a side view of a slide plate, FIG. 15 is a plan view thereof, FIG. 16 is a side view of a holder, and FIGS. 17 and 18 show operations. FIG. DESCRIPTION OF SYMBOLS 1...Frame, 3...Disk cartridge, 4...Slide plate, 6...Cam part, 6a...
Inclined cam part, 6b... Parallel cam part, 6t... Guide part, 7... Holder, 7e, 7f... Roller, 9...
...Turntable, A...Cartridge insertion side.

Claims (1)

[Claims for Utility Model Registration] (1) A holder that has a protrusion on its side and holds a disk cartridge containing a disc-shaped information recording medium, and a holder that reciprocates on a frame so that the protrusion slides. It has a slide plate equipped with a movable cam part, and in the process of reciprocating this slide plate, the holder is raised and lowered according to the cam shape of the cam part, and the information recording medium is moved by the lowering movement of the holder. A disk drive for recording and reproducing by being loaded onto a rotating means, characterized in that a guide portion is provided on the disk cartridge insertion side of the cam portion to restrict upward displacement of the protrusion with respect to the slide plate. Device. (2) The disk drive device according to claim (1), wherein the protrusion provided on the side surface of the holder is a roller that rolls on the cam portion.