JPH0127160Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) The present invention provides a positioning mechanism for a magnetic disk jacket, and more specifically, a positioning mechanism for a magnetic disk jacket.
The present invention relates to a positioning mechanism for positioning a disk jacket with respect to a drive device main body.

(Prior Art) An example of a conventional positioning mechanism for a magnetic disk jacket of this type is constructed as shown in FIGS. 1 to 4. Note that FIG. 1 is a plan view of a disk pack 1 consisting of a disk jacket 2 that accommodates a magnetic disk 3, and FIG. FIG. 3 shows a side view of the holder 200 to be inserted, and FIG.
FIG. 4 is a plan view showing the arrangement of holders 2 to 104, and FIG. 4 is a plan view of the holder 200. In FIG. 1, reference numeral 4 is a mechanical frame counter that displays the number of recorded annular tracks on the magnetic disk 3, 5 and 6 are first and second jacket positioning holes, and 7 is a hole for tracking the magnetic disk 3. 8 is a hole for inserting a magnetic head; 9 is a shutter that opens and closes the hole 8 for inserting the magnetic head; 10 is a bent portion having a U-shaped cross section along the side surface of the jacket 2 of the shutter 9; The center portion of the portion 9a shows a guide groove into which the portion 9a is slidably inserted.
In FIGS. 2 to 4, the reference numeral 101 indicates the substrate 10.
Rotation support shafts 102 to 10 of the holder 200 are supported by bearing side plates 106 and 107 formed by bending vertically upward on the front and rear edges of the left end of the holder 200.
4 are first to third positioning members implanted on the substrate 100, 105 is a magnetic disk drive motor, and 108, 109 are the bearing side plates 106, 1.
The bearing holes 201 and 202 of the rotation support shaft 101, which are drilled in the hole 07, are the receiving plates of the jacket 2, which are formed by bending inward from the lower ends of both side walls of the holder 200. bending part, 20
3, 204 is a plate spring for holding down the disk jacket fixed in series to the right side of the inner surface of the upper wall of the holder 200; 205 is a plate spring for holding down the disk jacket;
A pin 206 for opening the shutter 9 (see FIG. 1) is installed on the right-hand inner surface of the upper wall (in FIG. 4), and 206 is a stopper pin when inserting the disk jacket 2 into the holder 200. shown respectively. The shutter 9 of the disk jacket 2 is given the habit of moving to the right (in Fig. 1) by a tensile coil spring (not shown), and in normal life it is in the state shown in Fig. 1, that is, in the magnetic head insertion hole. However, as shown in FIG.
When the shutter 9 is inserted until its tip surface reaches the stopper pin 206 of the holder 200, the front end (the left end surface in FIG. 1) of the bent portion 9a of the shutter 9 touches the release pin 205 of the holder.
When the disk jacket 2 is inserted into the holder 200, it is automatically opened. Further, the first and second positioning members 102 and 103 on the substrate 100 have the same shape, and the first positioning member 102 has an upper end portion as shown in FIG. 5A. consists of a two-stage cylindrical body with a small diameter, and the small diameter part 102a
The upper end surface is tapered into a conical shape. Then, the narrow diameter portion 102a is fitted into the first positioning hole 5 of the disk jacket 2, and the disk jacket 2 is precisely positioned with respect to the substrate 100, and the stepped portion 102b is precisely positioned. It is designed to determine the height position. The second positioning member 103 is similarly fitted into the second positioning hole 6 of the disk jacket 2 for positioning. On the other hand, as shown in FIG. 5B, the third positioning member 104
The narrow diameter portion 102a of the positioning member 102 is cut out, and its upper end surface is a horizontal surface, and this surface abuts against the bottom surface of the disk jacket 2. Substrate 10
Precisely position only the height position relative to 0.
Therefore, there is no hole for positioning the disk jacket 2 relative to the member 104.

Next, the action of the positioning mechanism on the conventional disk jacket drive device constructed as described above will be explained.

First, as shown in FIG. 2, when the holder 200 is rotated about its support shaft 101 with the opening 200a slightly pulled up, the opening 200a
The disk jacket 2 is inserted from there. In addition,
The state of the holder 200 in FIG. 2 is such that it is rotated by a counterclockwise biasing force (not shown), and the rotation is restrained at the same position by a regulating member (not shown). The upper surface of the jacket 2 is connected to the above-mentioned presser plate springs 203, 20.
4, its bottom surface is supported by the bent portions 201 and 202, and it is inserted until its tip surface contacts the stopper pin 206. At this time, as described above, the shutter 9 of the disk jacket 2 is automatically opened in conjunction with the insertion operation of the disk jacket 2. From this state, when the holder 200 is rotated clockwise about the support shaft 101 by pushing its right end, the first and second positioning members 102 and 10 are
The narrow diameter portions 102a and 103a of the disk jacket 2 are arranged in the first and second positioning holes 5 and 3 of the disk jacket 2, respectively.
6 and insert the board 10 of the same disk jacket 2.
The arrangement position relative to 0 is precisely determined, and the height position is also relative to the bottom surface of the disk jacket 2 and the first and second positioning members 102, 10.
The third positioning member 104 is precisely positioned by abutting each step portion 102b, 103b of No. 3 and the upper end surface of the third positioning member 104, and is locked in this state by a locking member (not shown). ing. When the disk jacket 2 is thus accurately positioned on the substrate 100, it also faces the frame counter mechanism and magnetic head mechanism (not shown) at an accurate position.

Incidentally, in recent years, magnetic recording and reproducing devices using magnetic disk jackets as described above have been widely adopted in various fields.
In order to use this for electronic camera systems, portable computers, etc., there is a demand for miniaturization of this. However, in the above-mentioned conventional magnetic recording/reproducing device, the size of the disk jacket is constant, so if the device is to be made smaller, the support shaft 101 side of the holder 200 in FIG. As shown in the figure, the support shaft 101 is brought closer to the drive motor 105 side, and the holder 200 and the substrate 1
00 can be made smaller, but in that case, as shown in the figure, the second positioning member 103 can be inserted into the holder, which is simply inserted into the second positioning hole 6 (see Figure 1) of the disk jacket 2. Since the amount of movement cannot be secured, the disk jacket 2 cannot be inserted up to the stopper pin 206 of the holder 200, and it will come into contact with the second positioning member 103 on the way. It is impossible to miniaturize the entire device. In addition, it is possible to downsize the device by applying a parallel link mechanism or a loading mechanism using guides such as cylinders, but since both have a large number of parts and a complicated structure, it is not appropriate to reduce the weight. However, it has the disadvantage that the cost also increases significantly.

(Purpose) In view of the above-mentioned points, the present invention has been developed to provide a magnetic recording/reproducing device having a rotary holder for a disk jacket, which can be easily miniaturized, has a simple structure, is lightweight, and To provide an inexpensive positioning mechanism for a magnetic disk jacket.

(Summary) The disk jacket positioning mechanism of the present invention imparts biasing elasticity to at least the positioning member located on the spindle side of the holder to displace it toward the magnetic disk jacket to be mounted, and The positioning member is displaced against the elastic force by inserting the disk jacket into the board or by rotating the holder onto the board, and when the holder completes the above operation, the positioning member positions the disk jacket. The disk jacket is fitted into the hole for precise positioning of the disk jacket on the main body board of the device.

(Example) The present invention will be explained below based on the illustrated example.

7A and 7B show an enlarged side view and a plan view, respectively, of only the main parts of a magnetic disk jacket positioning mechanism showing an embodiment of the present invention. In both figures, the reference numeral 100A indicates a substrate 300 similar to the substrate 100 of the drive device main body in FIGS. 2 and 3 above.
is the second positioning member in the present invention,
The lower part is a horizontally elongated scalene rhombic prism, and the upper part is a horizontally elongated pyramid, and both sides (upper and lower sides in Fig. 7B) are cut off to form a disk jacket 2A. Side parts 304, 30 opposite to both sides of the second positioning hole 6A
It has become 5. This second positioning member 300
is fixed with a screw onto the distal end surface of a leaf spring 301 whose base end is fixed on a support member 302 fixed on the substrate 100A.
Although the habit of moving upward is given by
regulated by. That is, the leaf spring 301
The front and rear upper surfaces of the second positioning member 300 extend onto the leaf spring 301 from the front and back sides of the upper end of the stopper member 303 which is fixed on the substrate 100A in close proximity to the tip of the leaf spring 301. It is regulated by contacting the lower surfaces of arm portions 303a and 303b. In addition, the stopper member 3
The upper surfaces of the arm portions 303a and 303b of 03 are height position regulating surfaces 306 that determine the height position of the disk jacket 2A to be attached. The second positioning member 300 and other related components (not shown) are exactly the same as the structure of the disk jacket positioning mechanism shown in FIG. 2 above.

Next, the operation of the disk jacket positioning mechanism of the present invention constructed as described above will be explained.

FIG. 7A shows that the disk jacket 2A inserted into a holder (not shown) has its lower front end surface aligned with the right inclined edge 307 of the second positioning member 300.
It shows the state in which it is in contact with. At this time, a conventional stationary positioning member would not be able to insert the disk jacket 2A any further, but the second positioning member 300 according to the present invention can move downward against the elasticity of the leaf spring 301. Therefore, the right inclined edge 30 of the second positioning member 300 is located at the lower side of the front end surface of the disk jacket 2A.
7 to push the member 300 downward, the disk jacket 2A is further inserted into the holder and moved to the left, and when the member 300 reaches the positioning hole 6A of the disk jacket 2A. It rises by its own habit and fits into the hole 6A to position the jacket 2A. Then, the disk jacket 2A is rotated clockwise via a holder (not shown), and the bottom surface of the jacket 2A comes into contact with the top surface of the stopper member 303, thereby increasing the horizontal height of the jacket 2A with respect to the substrate 100A. The position can now be determined. In addition, when the second positioning member 300 pulls out the disk jacket 2A fitted into the positioning hole 6A from a holder (not shown) to the right in the figure, the second positioning member 300 pulls out the second positioning member 300 at the lower side of the front side of the positioning hole 6A. Since the left inclined edge 308 of the positioning member 300 of No. 2 is pushed down to push down the same member 300, the disk jacket 2A can be easily taken out from the holder.

As explained above, according to the present invention, the second positioning member can be provided close to the rotation axis of the holder, so that the magnetic recording and reproducing device can be significantly miniaturized. A positioning mechanism for the disk jacket can be provided.

FIG. 8 is a side view of a magnetic disk jacket positioning mechanism showing another embodiment of the present invention.

Second positioning member 400 in this embodiment
is an F-shaped lever that is implanted in an immovable member near the pivot shaft of the holder (not shown) and is rotatably supported at its central fulcrum by the pivot shaft 401. When the disk jacket 2B is in a normal state where it is not inserted into a holder (not shown), the member 400 is attached to the lower part of the disk jacket 2B and the substrate 10.
Due to the tensile coil spring 402 applied to 0B, the lower end is connected to the substrate 100B as shown by the two-dot chain line.
It is kept in a nearly vertical state by contacting the top. A positioning part 404 is formed at the upper part of the bearing hole 406 of the support shaft 401 in the center of the second positioning member 400, which protrudes upward, becomes thinner, and has a conical tip. The positioning portion 404 is attached to the disk jacket 2B.
The disk jacket 2B is positioned by fitting into the second positioning hole 6B of the disk jacket 2B. In addition, the positioning section 404
The peripheral edge of the bearing hole 406 at the base of the bearing hole 406 remains thick in an arc shape, and the shoulder portion 4 formed by the outer peripheral surface of the peripheral edge remains arcuate and thick.
05 is a height positioning portion of the disk jacket 2B, which corresponds to the stepped portion 102b of the second positioning member 102 in FIG. 5A. or,
A pushed portion 403 extending upward is formed at the left end portion (in FIG. 8) of the second positioning member 400, and when the disk jacket 2B is inserted into a holder (not shown), this pushed portion The inner surface of the portion 403 is pushed by the front end surface of the disk jacket 2B, and the second positioning member 400 is rotated counterclockwise about its support shaft 401 from the position indicated by the dotted line to the position indicated by the solid line in the figure. It has moved to an almost horizontal position.

The disk jacket positioning mechanism in this embodiment constructed as described above operates as follows. That is, when the disk jacket 2B is not inserted into a holder (not shown), the second positioning member 400 is in a substantially vertical position due to its rotational behavior, as shown by the two-dot chain line in the figure.
Therefore, the positioning section 404 is in a substantially horizontal state, and its tip end is attached to the disk jacket 2.
It is evacuated outside the insertion path of B. Therefore, when inserting the disk jacket 2B into a holder (not shown), the jacket 2B can be inserted without coming into contact with the positioning portion 404. Then, when the jacket 2B is inserted deeper, the jacket 2B pushes the inner surface of the pushed portion 403 of the second positioning member 400 with its tip end surface. As the disk jacket 2B is inserted, the second positioning member 400 rotates to a substantially horizontal position as shown by the solid line in the figure. Along with this, the positioning portion 404 also rotates to a substantially vertical position, and is suitably fitted into the second positioning hole 6B of the disk jacket 2B, thereby precisely positioning the disk jacket 2B with respect to the substrate 100B. Next, by rotating the disk jacket 2B clockwise via a holder (not shown), the bottom surface of the disk jacket 2B comes into contact with the shoulder 405 of the second positioning member 400, and the height position is adjusted. is precisely positioned. The effect of the disk jacket positioning mechanism in this embodiment that operates in this manner is similar to that of the previous embodiment shown in FIG. Section 404
is forcibly pushed into the positioning hole 6B, so the positioning ability, that is, the ability to accurately position even when it is greatly collapsed in the holder, is higher than in the previous embodiment. .

9A and 9B show an enlarged side view and a plan view, respectively, of a main part of a disk jacket positioning mechanism showing still another embodiment of the present invention. In both figures, reference numeral 500 denotes a second positioning member according to the present invention, which is rotatably supported approximately at its center on a support shaft 502 attached to an angle 503 fixed on the board 100C of the drive device main body. The lever 501 is fixed to one end (the left end in the figure) of the lever 501, and has a short cylindrical shape with a conical upper end. The other end of the lever 501 is formed of a circular body horizontally orthogonal to the longitudinal direction of the lever 501, and is connected to the bottom surface of one bent portion 201A of the bottom wall of the holder into which the disk jacket 2C is inserted. The pressed portion 504 is opposed to the pressed portion 504. The above lever 501 is the same lever 501.
After one end is hooked onto a pin 508 implanted on the front side near the right end and wound around the support shaft 502,
A torsion spring 50 whose other end abuts on the substrate 100C
Although a counterclockwise rotational behavior is given by the elasticity of 5, the rotation due to the same behavior is caused by the pushed part 50.
4 is regulated by contacting the bottom surface of the bent portion 201A of the holder. The angle 503 is formed into a channel shape, and an elongated hole 506 in the longitudinal direction of the lever 501 is bored in the upper wall, and the second positioning member 500 is fitted into the elongated hole 506. It's summery. Therefore, movement of the lever 501 in the thrust direction with respect to the support shaft 502 is allowed to some extent, but the second positioning member 500 is moved by the elongated hole 506 of the angle 503 as shown in FIG. At B, the front and rear directions are closely regulated and precisely positioned. The upper surface 507 of the angle 503 is a positioning portion in the height direction, with which the bottom surface of the disk jacket 2C abuts and determines the height position of the disk jacket 2C.

Next, the operation of the disk jacket positioning mechanism in this embodiment constructed as described above will be explained.

Lever 501 indicated by a two-dot chain line in FIG. 9A
and the position of the holder bending portion 201A, respectively, when the holder inserts the disk jacket 2C;
That is, it shows the state in the open state position. In this state, the holder bent portion 201A is rotated and tilted counterclockwise with respect to the horizontal.
As the lever 5 moves, the pushed portion 504 at the other end comes into elastic contact with the bottom surface of the bent portion 201A.
01 also rotates counterclockwise, and the second positioning member 500 fixed to one end of the angle 5
It is located below the top surface of 03. Therefore, even if the disk jacket 2C is inserted into the holder (not shown) in this state as shown, it can be easily inserted to the state shown in the figure regardless of the second positioning member 500. I can do it. Next, the free end of the holder is pushed down by the elasticity of the torsion spring 505, and the bent part 201A of the holder is pushed down to the position indicated by the solid line, and accordingly the lever 50
The pressed portion 1 is also pushed down to the position indicated by the solid line, and the lever 501 is rotated clockwise. Then, the second positioning member 500 protrudes from the elongated hole 506 on the top surface of the angle 503, and at the same time, the top surface 507 of the angle 503 also abuts against the bottom surface of the disk jacket 2C, and the second positioning member 500 The disk jacket 2C is suitably fitted into the positioning hole 6C, and the disk jacket 2C is precisely positioned both in height and position.

The effects of the disk jacket positioning mechanism of this embodiment constructed and operated in this manner are similar to those of the positioning mechanism shown in FIGS. 7 and 8, but in addition, the second positioning member 500 is By fitting into the elongated hole 506 of the angle 503, the precision of its positioning is further guaranteed.

In addition, in the above positioning mechanism, the case where the present invention is applied to the second positioning member has been explained. Of course, the merits of the case can be applied to all cases.

(Effects) As explained above, according to the present invention, even in a magnetic recording/reproducing device having a rotary disk jacket holder, the magnetic disk jacket positioning mechanism can be easily miniaturized at low cost. can be provided.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an example of a disk jacket used in a magnetic recording/reproducing device, and FIG.
FIG. 3 is a side view showing an example of a positioning mechanism for a magnetic disk jacket in a conventional magnetic recording/reproducing device; FIG.
4 is a plan view of the disk jacket holder in the magnetic disk jacket positioning mechanism shown in FIG. 2, and FIGS. 5A and 5B are views of the first and second positioning members and the third FIG. 6 is an enlarged perspective view showing the upper end of the positioning member, FIG. 6 is a side view showing an example of a magnetic recording/reproducing device in a state where miniaturization is impossible, and FIGS. FIG. 8 is an enlarged side view and plan view of a main part of a positioning mechanism for a disk jacket showing another embodiment of the present invention; FIG. 9 is an enlarged side view of a main part of a positioning mechanism for a disk jacket showing another embodiment of the present invention. A and B are
FIG. 7 is an enlarged side view and a plan view of a main part of a disk jacket positioning mechanism showing still another embodiment of the present invention. 2, 2A, 2B, 2C...Disk jacket, 5, 6, 6A, 6B, 6C...Positioning hole, 100, 100A, 100B, 100C...
Board of drive device main body, 102, 103, 104,
300, 400, 500...Positioning member, 2
00... Jacket holder, {301... Leaf spring, 402... Coil spring, 505... Torsion spring. } (biased elastic member).

Claims (1)

[Claims for Utility Model Registration] A magnetic disk jacket having a plurality of positioning holes is rotatably supported on a base plate of a drive device body by a support shaft so as to be able to lie down on the base plate. Insert it into the disc jacket holder,
In the positioning mechanism, the disk jacket is positioned by rotating the holder so that the positioning holes fit into the plurality of positioning members disposed on the substrate. Among the positioning members, at least the positioning member located on the rotational shaft side of the holder is given a uniform elasticity to be displaced toward the opposing disk jacket surface, and the disk jacket is attached to the holder. The positioning member is displaced against the elastic force by the insertion action of the holder or the rotational action of the holder onto the substrate, and at the end of the above action, the positioning member is inserted into the positioning hole of the disk jacket. A positioning mechanism for a magnetic disk jacket, characterized in that the disk jacket is positioned by being inserted into the position.