JPS639072A - Device for detecting inserting direction of magnetic disk member - Google Patents

Abstract

PURPOSE:To detect the inserting direction of a disk member with a simple structure by abutting a pin fitted to one end of a detecting lever locked to a rotary shaft so as to be optionally rotated and excited in one direction by a spring upon the inserted disk member. CONSTITUTION:A rotary supporting hole 11 of the detecting lever 9 is inserted into the rotary shaft of the disk holder 8 so as to be rotated in the arrow D direction and the tip of the spring 13 is engaged with engaging ribs 14, 15 to excite the lever 9 in the D direction. Under said state, the lever 9 is locked by locking chips 10a, 10b formed on the upper end of the shaft 10 so as not to be dropped. When a magnetic disk member A is inserted into the holder 8, a chamfering part B is abutted upon the pin 12 of the lever 9 and discharged in a direction C, so that the member A can be inserted without any trouble. If the member A is inserted in error, the member A is regulated by the pin 12 and can not be inserted into the holder 8. Thus, the inserting direction of the disk member can be detected with a simple constitution.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device for detecting the insertion direction of a magnetic disk member used in a magnetic recording device such as a floppy disk drive.

BACKGROUND OF THE INVENTION FIG. 3 shows the structure of a conventional magnetic disk member insertion direction detection device. In FIG. 3, reference numeral 1 denotes a disk holder, which works in conjunction with a disk holder elevating mechanism (not shown) to grip the magnetic disk member A and attach/detach it to a disk drive mechanism (not shown) of a magnetic recording device. There is. Reference numeral 2 denotes a bottle for determining the presence or absence of a 45-degree chamfered portion B on the magnetic disk member, and is ridged on the detection lever 3.

Reference numeral 4 denotes a rotation shaft of the detection lever 30, which is fixed to the disc holder 1 with the detection lever 3 rotatably interposed therebetween.

Reference numeral 5 denotes a spring, which is stretched between a spring locking portion 6 erected on the disc holder 1 and a spring latching portion 7 erected on the detection lever 3, and constantly biases the rotation of the detection lever 30 in one direction. ing.

Next, the operation of the above conventional example will be explained. In FIG. 4, when the magnetic disk member A is properly inserted into the disk holder 1, the chamfered portion B comes into contact with the pin 2. Then, when the magnetic disk member A is further inserted, a component of the insertion force by the chamfered portion B turns the detection lever 3 in the direction of arrow C against the tension of the spring 5, and the pin 2 moves from the side of the magnetic disk member A. Therefore, the restriction on the insertion direction of the magnetic disk member A is released and the magnetic disk member A is inserted to a predetermined position. For example, if the magnetic disk member A is inserted into the disk holder 1 in the wrong direction as shown in FIG. It will not be inserted all the way to the end of 1. In this way, even in the above conventional magnetic disk member insertion direction detection device, when the magnetic disk member A is inserted, the detection lever 3 determines the presence or absence of the chamfered portion B of the magnetic disk member A, and detects the insertion direction of the magnetic disk member A. It is possible to detect whether or not it is normal.

Problems to be Solved by the Invention However, the above-mentioned conventional device for detecting the insertion direction of a magnetic disk member has a large number of parts (and assembly of the device is not easy as it involves adjusting the pins and rotating shafts).

The present invention solves these conventional problems,
It is an object of the present invention to provide an excellent magnetic disk member insertion direction detection device that has a small number of parts and is easily assembled.

Means for Solving the Problems In order to achieve the above object, the present invention provides a boss for determining the chamfered portion of a magnetic disk member, which is integrated with a detection lever, and a boss that always urges the rotation of the detection lever in one direction. In addition, the disc holder is provided with an engagement part of the spring part integrally molded with the detection lever and a rotation shaft of the detection lever, and the rotation shaft of the detection lever is formed so that the rotation shaft of the detection lever is It is fitted into the dynamic fulcrum hole to prevent the detection lever from coming off within the normal rotation range.

Therefore, according to the present invention, the detection lever can be easily pivoted to the disc holder by fitting the rotation fulcrum hole of the detection lever into the rotating shaft and engaging the spring part with the engaging part on the disc holder. be able to.

Embodiment FIG. 1 shows the configuration of an embodiment of the present invention. In FIG. 1, 8 is a disk holder, which works in conjunction with a disk holder elevating mechanism (not shown) to grip the magnetic disk member A and attach/detach it to/from a disk drive mechanism (not shown) of a magnetic recording device. There is. Reference numeral 9 designates a detection lever, which has a rotation fulcrum hole 11 formed therein so as to be pivotally mounted on a rotation shaft 10 formed integrally with the disc holder 8. 12
is a boss that determines the presence or absence of the chamfered portion B of the magnetic disk member A, and is integrally molded with the detection lever 9. 13 is a spring part integrally molded with the detection lever 9, and the tip of this spring part is connected to the engagement lip 1 provided on the disc holder 8.
4.15 to constantly urge the rotation of the detection lever 9 in the direction of the arrow with an appropriate force. FIG. 2 is an exploded perspective view of essential parts for explaining the assembly procedure of this device. In FIG. 2, the rotation fulcrum hole 11 of the detection lever 9 is inserted into the rotating shaft 10, the detection lever 9 is rotated in the direction of the arrow until it comes into contact with the disc holder 8, and then the tip of the spring portion 13 is inserted. When the detection lever 9 is engaged with the engagement lip 14.15 by utilizing the elasticity of the spring portion 13, the detection lever 9 is in the state shown by the phantom line in FIG. 2, and is still urged to rotate in the direction of the arrow. In this state, the detection lever 9 is interposed between the locking pieces 10a, 10b formed at the upper end of the rotation shaft 10 and the upper surface of the disc holder 8, and is pivotally attached to the rotation shaft 10. It is designed not to break away.

Next, the operation of the above embodiment will be explained. In FIGS. 1 and 2, when the magnetic disk member A is properly inserted into the disk holder 8, the chamfered portion B comes into contact with the pin 12. Then, when the magnetic disk member A is further inserted, the chamfered portion B
The component force of the insertion force rotates the detection lever 9 in the direction of arrow C against the tension of the spring portion 13, and the pin 12 moves to the side of the magnetic disk member A.
is inserted to a predetermined position after the restriction on the insertion direction is released. Furthermore, if the magnetic disk member A is inserted into the disk holder 8 in the wrong direction, the magnetic disk member A will come into contact with the bin 12 and its insertion will be restricted, so that it will not be inserted any further into the disk holder 8. There isn't. In this way, when the magnetic disk member A is inserted, the magnetic disk member insertion direction detection device detects whether the magnetic disk member A is inserted in the correct direction by the detection lever 9 determining the presence or absence of the chamfered portion B of the magnetic disk member A. It can be detected whether or not.

In this way, according to the above embodiment, the magnetic disk member A
The boss 12 and the detection lever 9 determine the presence or absence of the chamfered portion B.
Since the spring part 13 that biases the rotation in one direction is integrally molded with the detection lever, and the rotating shaft 10 is integrally molded with the disk holder 8, the number of parts is small and assembly work is easy. A member insertion direction detection device can be provided.

Effects of the Invention As is clear from the above embodiments, the present invention is an improvement on the conventional magnetic disk member insertion direction detection device, and has simple components and the same function as the conventional device. The direction detection device can be provided at low cost and is highly practical.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the configuration of a magnetic disk member insertion direction detecting device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of main parts explaining the assembly procedure of the device, and FIG. FIGS. 4 and 5 are perspective views showing the structure of the magnetic disk member insertion direction detecting device, and are operation explanatory diagrams showing a state in which the magnetic disk member is inserted into the disk holder. 1... Conventional disc holder, 2... Pin, 3
...Conventional detection lever, 4.Conventional rotation shaft,
5... Spring, 6.7... Spring engagement part, butt... Disc holder of the embodiment, 9... Detection lever of the embodiment, 1
0... Rotation shaft of the embodiment, 10a, 10b... Locking piece, 11... Rotation fulcrum hole of detection lever, 12... Boss, 13... Spring portion, 14.15...・Engagement lip, A・
...Magnetic disk member, A'... Chamfered portion of the magnetic disk member. Name of agent: Patent attorney Toshio Nakao and 1 other person
2 Figure 4 Figure 5

Claims (1)

[Claims] A magnetic disk member that rotatably houses a disk-shaped recording medium and has a cover case with a 45-degree chamfer formed on one corner in the direction of insertion into a magnetic recording device, and a magnetic disk member that is gripped and raised and lowered. A disk holder that is attached to and detached from the disk drive mechanism of the magnetic recording device; and a detection lever that determines the presence or absence of a chamfered portion of the magnetic disk member and detects whether or not the insertion direction of the magnetic disk member into the magnetic recording device is normal. The detection lever is provided with a boss for determining the chamfered portion of the magnetic disk member at the front in the insertion direction of the magnetic disk member, a plate-shaped spring portion that constantly urges rotation of the detection lever in one direction, and a rotation fulcrum. A rotation shaft is formed on the disk holder to fit into the rotation fulcrum hole of the detection lever, and a plate spring part is engaged with the rotation shaft so as to generate an appropriate biasing force on the detection lever. 1. An insertion direction detection device for a magnetic disk member, characterized in that a mating portion is integrally provided.