JPH0650877Y2 - Frame for magnetic recording device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a frame for a magnetic recording device, and more particularly to a frame in which a peripheral portion of a guide groove provided on a side surface of a frame of a floppy disc device or the like has increased rigidity. It is about.

[Problems to be solved by conventional techniques and devices]

Among conventional magnetic recording devices, for example, a floppy disc (hereinafter abbreviated as “FD”) device is provided with a guide on a side surface of a holder (1) for accommodating an FD as shown in FIGS. 4 and 5 attached to a separate sheet. The pins (2) and (2) are provided in a protruding manner, and the guide rollers (3) and (3) are pivotally attached thereto. Furthermore, the frame (4)
A guide groove (5) (5) is formed by providing a notch from the upper end of the side surface of the above, and the guide pins (2) (2) are fitted into the respective guide grooves (5) (5). And a guide pin roller (3) pivotally attached to the guide pin (2) (2)
The holder (1) is formed so that it can move up and down inside the frame (4) by (3) rolling up and down in the guide grooves (5) and (5). Here, since the guide grooves (5) (5) are U-shaped and have an opening above the side surface of the frame (4) and the side surface of the frame (4) is flat, strength is high in rigidity. However, when the frame (4) is subjected to an external force such as bending or twisting, the guide grooves (5) and (5) may be deformed. In such a case, the holder (1) may be biased or may not move up and down smoothly, which causes the magnetic head to be off-track. Therefore, there arises a technical problem to be solved in order to increase the rigidity of the frame (4) and operate the holder (1) smoothly.

[Means for solving problems]

The present invention has been proposed as a solution to this problem in view of the above problems, in which a guide groove is formed in the side surface of the frame, and a guide pin is provided on the side surface of a holder for accommodating the magnetic medium. In a magnetic recording device in which a guide pin is fitted in the guide groove to vertically move the holder,
A bulging portion is provided so as to project inside a predetermined position of the frame, and the frame on the upper surface of the bulging portion is continuously provided.
Further, a frame for a magnetic recording device is provided in which a guide groove of the guide pin is opened substantially in the center of the bulging portion.

[Action]

According to this invention, a bulging portion is provided on the inside of the frame of the magnetic recording device by an appropriate means, and at the same time, a guide groove is opened in a substantially central portion of the bulging portion. However, if the bulging portion is provided with a notch at the upper end or the lower end, for example, and is subjected to a process called "cutting draw" in which the left and right are narrowed and projected, it will reinforce the side surface of the frame and the guide groove It does not extend to the upper end or the lower end of the frame side surface, but is located at the substantially central portion of the frame side surface, and there is no notch opening at the upper end of the frame side surface unlike the conventional type. Therefore, the rigidity of the side surface of the frame can be increased in combination with the bulging portion, and the strength against the external force such as bending or twisting can be largely maintained. Moreover, the bulging portion can be easily formed by press working, and the frame around the guide groove can be reinforced without increasing the number of steps and using new parts.

〔Example〕

An embodiment of the present invention will be described below in detail with reference to the attached drawings. 1 and 2 show a frame (6) of an FD device, and the left and right sides of the frame (6) are bent upward to form a side surface portion (7). In the figure, motor mounting holes (8) and (8) are provided at the right corner of the bottom surface of the frame (6).
(8) (8) is perforated, and a motor mounting seat (9) is provided in the vicinity of the substantially central portion of the bottom surface of the frame (6). A bulge (10) is formed inside the side surface (7) at a predetermined position.
To provide. As shown in FIG. 3, the bulging portion (10) is subjected to "cutting and squeezing" processing in which notches are formed at the upper end (10a) and the lower end (10b) by press working and the left and right are squeezed to project inward. Has been done. Therefore, the side surface portion (7) of the frame (6) is continuously provided above the bulging portion. Simultaneously with this "cutting" processing, a guide groove (11) having a vertical direction in the up-down direction is opened at a substantially central portion in the left-right direction of the bulging portion (10). In the present embodiment, a slight cut (11) is formed on the side surface (7) corresponding to the guide groove (11) at the upper part of the bulge (10).
Although a) is provided, in the present invention, this notch (11a)
Is not necessarily required.

Then, the guide pin (not shown) of the holder for accommodating the FD is inserted and fitted into the guide groove (11) of the bulging portion (10) provided as described above. At this time, since the guide groove (11) is opened upward at the upper end (10a) of the bulging portion (10), the insertion of the guide pin is extremely easy. The holder (not shown) is formed so as to move up and down in the frame (6) as the guide pin slides up and down in the guide groove (11).
In this embodiment, the bulging portion (10) is "cut and drawn" by a press, and the guide groove (11) is also opened at the same time, so that the number of manufacturing steps can be reduced. Further, although the guide groove (11) is opened at the upper end (10a) of the bulging portion (10), it does not extend to the upper end of the frame side surface part (7), and the guide groove (11). The strength of the peripheral area can be kept large. Moreover, since the bulging portion (10) is provided so as to project inside the frame side surface portion (7), it has no influence on the outer dimensions of the frame (6). Thus, the frame (6) of the FD device can be increased in rigidity against bending and twisting, the holder can be smoothly moved up and down, and the fear that the magnetic head may be off-track can be eliminated.

[Effect of device]

As described in detail in the above-mentioned one embodiment, this invention has a bulging portion projecting from the inside of the frame of the magnetic recording apparatus, and a guide groove is formed in the bulging portion to form the upper surface of the bulging portion. In this case, since the frames are continuously provided, the rigidity of the peripheral portion of the guide groove can be increased and the deformation of the frame can be prevented.
Therefore, the holder can be operated smoothly, the off-track of the magnetic head which occurs in the conventional type can be eliminated, and the stable operation can be always obtained.
Moreover, the bulged portion can be easily processed by press punching,
It is possible to contribute to cost reduction, for example, without using any new parts, and because the entire frame of the FD device can be made of a steel plate frame, the frame of the FD device can be formed at low cost, and the like.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention. 1 is a partially cutaway plan view of the frame of the FD device, 2
FIG. 3 is a side view of the same, and FIG. 3 is a perspective view of a portion taken along the line AA of FIG. 4 and 5 show the conventional type, FIG. 4 is a side view of the frame of the FD device, and FIG.
It is a top view of the BB arrow of a figure. Symbol explanation (6) …… Frame, (7) …… Side part (10) …… Swelling part, (11) …… Guide groove

Claims (1)

[Scope of utility model registration request] 1. A guide groove is opened in a side surface of a frame, and a guide pin is projectingly provided on a side surface of a holder for accommodating a magnetic medium. The guide pin is fitted into the guide groove to move the holder up and down. In a possible magnetic recording device, a bulging portion is provided so as to project inside a predetermined position of the frame, and a frame on an upper surface portion of the bulging portion is continuously provided. A frame for a magnetic recording device, wherein a guide groove of the guide pin is opened substantially at a central portion.