JPH03232182A - Flexible disk driver - Google Patents

Abstract

PURPOSE:To eliminate the need for a guide post and to reduce the production cost by inserting a bent provided to a guide member slidably to a hole. CONSTITUTION:A bent 27b of a guide member 27 is inserted to a wide hole 21b of a hole 21a of a frame 21 or removed therefrom. After the bent 27b is inserted in the wide hole 21b, the bent 27b is skidded to a narrow hole 21c to engage the guide member 27 with the frame 21 without being removed. Thus, need of a guide post requiring expensive processing cost is eliminated and a flexible disk driver with low production cost is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention is directed to reducing production costs for the structure of a flexible disk drive.

[Prior Art] FIG. 5 is an exploded perspective view showing the configuration of a conventional flexible disk drive, FIG. 6 is a perspective view showing a disk cartridge held in a cartridge holder of the flexible disk drive, and FIG. ) and (b) are a partially enlarged plan view and a sectional view taken along the line A-A of the guide member of the flexible disk drive device in FIG. 5; In each figure, l
is a frame, 2 is a flexible disk (not shown)
It is a spindle motor that rotates the , and is fastened and fixed to the frame l. 3 is a carriage assembly on which one or two heads (not shown) are mounted;
A guide rod 3a is inserted into the carriage assembly 3 so as to be movable in the axial direction of the guide rod 3a. The guide rod 3a is fastened and fixed to the frame l. 4 is a stepping motor, which includes a feed screw portion 4a directly connected to a rotor (not shown). In the stepping motor 4, a bearing provided on the frame 1 at the tip of a feed screw portion 4a is supported by the portion 1a, and a housing portion (not shown) is fastened and fixed to the frame 1. A needle-like member (not shown) is attached to the other end of the carriage assembly 3 at approximately the same angle as the lead angle of the feed screw portion 4a, and is brought into contact with the groove portion of the feed screw portion 4a. A pressure spring (not shown) is attached to the carriage assembly 3 at a position facing the needle-like member, and the pressure spring pressurizes the feed screw portion 4a to change the position of the needle-like member relative to the feed screw portion 4a. Improves stability. Reference numeral 5 denotes a control circuit board equipped with electrical terminals 15, which performs electrical control of the entire flexible disk device and sends and receives signals to and from a computer, etc. connected to the flexible disk device. The control circuit board 5 is fastened and fixed to the frame 1. Reference numeral 6 denotes a cartridge holder that can hold therein a disk cartridge 8 containing a flexible disk (not shown).

Further, the disc cartridge 8 is held in a cartridge holder 6.
It can be inserted and removed freely by the operation described below. A plurality of guide pins 6a are provided on the side surface of the cartridge holder 6. Reference numeral 7 denotes a guide member, and the same number of cam-shaped guide portions 7a as the guide pins 6a are provided on the side surface of the guide member. The guide pin 6a engages with a cam-shaped guide portion 7a, and the guide member 7 has sliding holes 7 at multiple locations.
b is provided. As is clear from the partially enlarged plan view of the guide member 7 shown in FIG.
It is composed of parts. The same number of guide posts lb as the sliding holes 7b are press-fitted into the frame l. The guide post 1b is provided with a groove IC shown in FIG. 7(b). The sliding hole 7b is circular and can be inserted into and removed from the guide post 1b, and as shown in FIGS. 7(a) and (b)
As shown in , the groove 1c of the guide boss lb is inserted into the oval or rectangular portion of the sliding hole 7b. The plate thickness of the guide member 7 is set to be smaller than the groove portion 1c of the guide boss 1b, and the guide member 7 is configured to be slidable with respect to the guide boss lb. A shutter opener 9 opens and closes a protective shutter 8a provided on the disk cartridge 8 shown in FIG. The shutter opener 9 is inserted into the boss ld press-fitted into the frame 1 so as to be rotatable and movable in the axial direction, and is also held in the cartridge holder 6. Reference numeral 9a designates a tension spring, one end of which is secured to the guide member 7, and the other end secured to the frame 1. 1O is a lever, which is inserted into the post 1d so as to be rotatable and movable in the axial direction. One end of the lever 10 is engaged with the guide member 7;
It is possible to release it by rotating it with respect to the boss 1d. The shutter opener 9 and the lever 10 both have a twist coil spring (A) 11 and a twist coil spring (
B) They are each biased in a fixed rotational direction by 12.

The biasing direction is the direction in which the shutter opener 9 can open the closed protective shutter 8a, and the direction in which the lever 10 is engaged with the guide member 7. Reference numeral 13 denotes a knob attached to the guide member 7, which is pressed when the disk cartridge 8 is ejected.

A track 0 sensor 14 is connected to the control circuit board 5 and detects the position of track 0, which is a reference track.

Next, the operation of the above conventional flexible disk drive device will be explained. When the disc cartridge 8 is inserted into the cartridge holder 6 in the direction shown by the arrow in FIG. 6, the disc cartridge 8 comes into contact with the shutter opener 9. When the disk cartridge 8 is further inserted, the shutter opener 9 rotates to open the protective shutter 8a of the disk cartridge 8. When the disk cartridge 8 is further inserted, the disk cartridge 8 comes into contact with the lever IO. When the disk cartridge 8 is further inserted, the lever 10 starts to rotate, and when the disk cartridge 8 is further inserted, the lever 10 is disengaged from the guide member 7. At this time, the shutter opener 9 is engaged with the lever 10. lever l
When O is disengaged from the guide member 7, the guide member 7 slides using the guide post 1b as a guide due to the return force of the tension spring 9a. By sliding the guide member 7,
The guide bin 6a of the cartridge holder 6 descends along the cam-shaped guide portion 7a. Therefore, the cartridge holder 6 descends, and the disk cartridge 8 inserted into the cartridge holder 6 also descends. When the disk cartridge 8 is lowered to a predetermined position, it is positioned at the predetermined position by a position determining means (not shown). When the disk cartridge 8 is positioned, the cartridge holder 6 presses the disk cartridge 8 against the positioning means to complete the downward movement, and at the same time the sliding movement of the guide member 7 is also terminated. Further, in synchronization with the downward movement of the cartridge holder 6, a head (not shown) mounted on the carriage assembly 3 also comes into contact with the disk cartridge 8. The above is the disk loading operation.

When the above disk loading operation is completed,
The spindle motor 2 is connected to a control circuit (
A flexible disk (not shown) is rotated by a signal from a flexible disk (not shown). At this time, the stepping motor 4 also rotates in the same manner. stepping motor 4
0 When the rotor (not shown) rotates, the feed screw portion 4a
The carriage assembly 3, which is engaged through a needle-like member (not shown), moves linearly in the radial direction of the flexible disk and moves to the designated track.

Here, signals are exchanged between the flexible disk and the head. The above is the read/write operation.

When the read/write operation as described above is completed, the operator presses the knob 13. When the knob 13 is continuously pressed, the guide member 7 slides using the guide post lb as a guide. When the guide member 7 slides, the cartridge holder 6 moves upward along the cam-shaped guide portion 7a of the guide member 7, and at the same time, the disk cartridge 8 also moves upward. If you continue to press the knob 13, the lever 10 will move to the guide member 7.
The shutter opener 9 is disengaged from the lever 10, the shutter opener 9 rotates, and the disk cartridge 8 is ejected by the rotational force, and the protective shutter 8a is closed. The above is the ejection operation.

[Problems to be Solved by the Invention] Since the above-described conventional flexible disk drive device is configured as described above, a guide boss (1) is press-fitted into the frame 1 in order to guide the sliding movement of the guide member 7.
A plurality of guide bosses (b) are required, and processing costs for the guide bosses (lb) and press-fitting the guide bosses (lb) into the frame (l) are required, and additionally, management of the removal force after press-fitting the guide boss (lb) into the frame (l) is required. It is necessary to control the perpendicularity of the guide boss 1b after the guide boss 1b is press-fitted into the frame l, and this poses a problem in that it hinders the reduction in production costs for the structure of the flexible disk drive device.

This invention was made to solve the above-mentioned problems, and an object thereof is to obtain a flexible disk drive device with low production cost.

[Means for Solving the Problems] The flexible disk drive device according to the present invention eliminates the need for a guide post that is press-fitted into the frame in order to guide the sliding movement of the guide member, and instead includes one or more guide posts in the frame. A plurality of holes are provided, the guide member is provided with the same number of bent portions as the holes, and the bent portions are slidably inserted into the holes.

[Function] In the flexible disk drive device of the present invention, one or more holes provided in the frame and the same number of bent portions as the holes provided in the guide member are different from the above-described conventional flexible disk drive device. It has the same function as the sliding hole provided in the guide member and the guide post press-fitted into the frame. Therefore, it is possible to eliminate guide posts that require high processing costs, and it is possible to reduce production costs.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. 1st
The figure is an exploded perspective view showing the configuration of a flexible disk drive device according to an embodiment of the present invention, and FIGS.
FIG. 4 is a partially enlarged perspective view and a partially enlarged cross-sectional view showing the main parts of the flexible disk drive device shown in FIG. It is a diagram. 5 with each symbol in Figure 1.
The same reference numerals as those in the figures indicate the same or corresponding parts, and detailed explanation thereof will be omitted. In each figure, 21 is a frame;
Reference numeral 21a denotes a hole provided in the frame 21, which is a through hole having a roughly T-shape having a wide hole 21b and a narrow hole 21c. In this example, three holes M 21 a are provided. Reference numeral 22 denotes a protrusion, which is molded integrally with the main body of the frame 21. 27 is a guide member, and this guide member 27 is provided with the same number of bent portions 27b as the hole portions 21a. As shown in FIGS. 2 and 3, the bent portion 27b has a T-shape, and the bent portion 27b has an L-shaped cross section. FIG. 3 is a cross-sectional view of the bent portion 27b inserted into the hole g2Ia, viewed from the direction of the arrow shown in FIG. 2. FIG. For example, as shown in FIG.
is of tolerance class H8, and the dimensional portion C is finished with dimensional accuracy of about tolerance class E9 or equivalent.

Additionally, the dimension portions and dimension E are similarly finished with dimensional accuracy to ensure a loose fit.

Next, the operation of the flexible disk drive device according to the embodiment of the present invention will be described. Here, the explanation of the operation of the constituent parts similar to those of the above-mentioned conventional device will be omitted, and only the operation of the characteristic constituent parts according to the present invention will be explained. The bent portion 27b of the guide member 27 is inserted into or removed from the hole 21a of the frame 21 at the wide hole 21b shown in FIG. The bent part 27b is connected to the wide hole part 2.
After being inserted into the frame 2, the guide member 27 is inserted into the frame 2 by sliding the bent portion 27b into the narrow hole portion 21C.
1 so that it will not come off. In this way, the bent portion 27b of the guide member 27 is connected to the hole 27b of the frame 21.
1a, insertion or removal is possible only at a certain place in the wide hole part 21b, and the narrow hole part 21 in other places.
C cannot be inserted or removed. Further, the gap between the bent portion 27b of the guide member 27 and the hole portion 21a of the frame 21 is configured to be as small as possible.

As shown in FIG. 3, the protrusion 22 serves as a support for the guide member 27. Therefore, the difference between the dimension E and the dimension E can be stably maintained, and the frame 2
Friction when the guide member 27 slides with respect to the guide member 1 can be reduced.

In the above embodiment, the bent portion 27b of the guide member 27 has an L-shaped cross section, but as in another embodiment of the present invention shown in FIG. 4, the bent portion 27b may have a Z-shaped cross section. The same effects as in the above embodiment are achieved.

[Effects of the Invention] As described above, according to the flexible disk drive device of the present invention, in order to guide the sliding movement of the guide member,
The guide post that is press-fitted into the frame is eliminated, and instead, one or more holes are provided in the frame, and the guide member is provided with the same number of bent portions as the holes, and the bent portions are inserted into the holes. On the other hand, since it is configured to be slidably inserted, even if the guide post that is press-fitted into the frame of this type of conventional device is eliminated, it can still perform the same function as when the guide post is present. Therefore, it is possible to reduce the cost by the amount of eliminating the guide post, and it is possible to obtain a flexible disk drive device with a low production cost for the structure of the device, which is an excellent effect.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing the configuration of a flexible disk drive device according to an embodiment of the present invention, and FIGS. 2 and 3 are partially enlarged perspective views showing main parts of the flexible disk drive device in FIG. 4 is a partially enlarged perspective view showing main parts of a flexible disk drive device according to another embodiment of the present invention; FIG. 5 is an exploded perspective view showing the configuration of a conventional flexible disk drive device; FIG. 6 is a perspective view showing a disk cartridge held in a cartridge holder of a flexible disk drive;
Figures (a) and (b) are a partially enlarged plan view and a cross-sectional view taken along the line A--A of the guide member of the flexible disk drive shown in Figure 5. In the figure, l, 21... frame, la... bearing is part, Ib... guide post, 1c... groove part,
Id...Post, 2...Spindle motor, 3...
・Carriage assembly, 3a...Guide rod, 4
...Stepping motor, 4a...Feeding unit, 5
...Control circuit board, 6...Cartridge holder, 6
a... Guide bottle, 7.27... Guide member, 7a...
- Guide part, 7b...Sliding hole, 8...Disk cartridge, 8a...Protection shutter, 9...Shutter opener, 9a...Tension spring, 10...Lever 1
DESCRIPTION OF SYMBOLS 1... Twisted coil spring (A), 12... Twisted coil spring (B), 13... Knob, 14... Track 0 sensor, 15...-Electrical terminal, 21a... Hole portion,
21b...Various part, 21c...Narrow hole part, 22...
The protruding portion, 27b... is a bent portion. In addition, the same symbols in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] A flexible disk drive device comprising a frame, a cartridge holder that holds a disk cartridge containing a flexible disk, and a guide member that engages with the cartridge holder and is provided with a guide portion for raising and lowering the cartridge holder. One or more holes are provided, the guide member is provided with the same number of bent portions as the holes, and the bent portions are slidably inserted into the holes. Features a flexible disk drive device.