JPH0755720Y2 - Disc cartridge shutter - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an optical disk or a magnetic disk, for example, 3.5.
The present invention relates to a shutter of a disc cartridge for storing a disc for inches.

[Conventional technology]

The applicant of the present application has previously filed Japanese Patent Application No. Sho 63-85108 and No. 115 of Kaikai.
No. 65 discloses a shutter for a single-sided disk cartridge. That is, the disclosed disc cartridge C has, as shown in FIG. 7, an upper half piece 50 and a lower half piece 51 which is joined so as to face the upper half piece 50, and the upper half piece 50 has a disc housed in the disk cartridge C. A rotary hole 52 for inserting a spindle for inserting a spindle for rotating is provided, and a head insert hole 53 into which a read / write head is inserted is formed adjacent to the rotary hole 52. The rotary hole 52 and the head insertion hole 53 can be freely opened and closed by a shutter 70 made of stainless steel, and the shutter 70 has a structure shown in FIG. The shutter 70
Has a long closing plate portion 55 for closing the rotation hole 52 and the head insertion hole 53, and a short closing plate portion 56 facing the closing plate portion 55, and between the both closing plate portions 55, 56. A guide plate portion 54 is formed at the bent portion. As shown in FIG. 7, this guide plate portion is engaged with the insertion end face of the cartridge into the reading / writing device and guides the shutter 70 along the insertion end face. The guide plate portion 54 has an extension portion 54a extended in its longitudinal direction, and a guide groove engaging portion which engages with a guide groove g ₀ formed in the insertion end surface of the cartridge at the tip of the extension portion 54a. 54b is formed.

When the shutter 70 is opened, the drive pin 60 provided on the reading / writing device side is brought into contact with the end surface of the guide groove engaging portion 54b, and the drive arm 61 to which the drive pin 60 is attached is attached to the guide plate portion 54. Move along the axial direction. As a result, the shutter 70 opens the rotation hole 54 and the head insertion hole 53, and at this time, the guide groove engaging portion 54b of the guide plate portion 54.
And a spring 6 that engages with a spring receiving portion 54c provided on the opposite side.
When 2 is contracted and the drive pin 60 is released from the tip of the guide groove engaging portion 54b, the shutter is operated by the action of the spring 62.
70 again closes the rotation hole 52 and the head insertion hole 53.

The extension portion 54b of the guide plate portion has a cutout portion 54d, which is formed when the head of the reading / writing device is inserted beyond the extension portion 54a in the extending direction of the closing plate portions 55 and 56. It does not interfere with the movement.

[Problems to be solved by the device]

However, since the extended portion 54a of the guide plate portion 54 is partially cut out to form the notched portion 54d so as not to disturb the movement of the head of the reading / writing apparatus, the durability of the extended portion 54a is weakened. Therefore, when the guide pin engaging portion 54b is pressed by the drive pin 60, the extension portion 54a may be deformed to hinder the smooth movement of the shutter 70 and also hinder the insertion of the head of the reading / writing device. There was a problem.

The present invention provides a shutter for a disk cartridge in which a guide plate portion of a shutter has a reinforcing structure at an extension portion corresponding to a position where a head of a reading / writing device is inserted, and effectively prevents the deformation of the portion. With the goal.

[Means for Solving the Problems]

In view of the above, the present invention has a rotation hole for inserting a spindle, which is formed by bending a single plate, for rotating a disk in a disk cartridge so as to face each other, and a read / write hole provided adjacent to the rotation hole. There is a closing plate portion for opening and closing the head insertion hole, and the bent portions of both closing plate portions are engaged with the insertion end face of the cartridge into the reading / writing device to form a part of the guide plate portion. A shutter for a disk cartridge, wherein a guide plate portion is extended in the longitudinal direction to form an extended portion, and a guide groove engaging portion that engages with a guide groove formed in the insertion end of the cartridge is provided at the extended end thereof. The extension portion of the guide plate portion has a reinforcing structure reinforced against external force.

[Action]

A guide provided in the intermediate portion of the obstruction plate portions formed opposite to each other for opening and closing a spindle insertion rotation hole for rotating the disk and a read / write head insertion hole provided adjacent to the rotation hole The extension part of the plate part has a reinforcing structure, so that even when the shutter is operated by the drive pin, the extension part does not deform and the smooth movement of the shutter is not disturbed and the head of the reading / writing device can be inserted. Does not interfere.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, the shutter 1 of the present invention is a cartridge C.
Spindle insertion hole for rotating the inner disk and a long closing plate 2 for opening and closing a read / write head insertion hole provided adjacent to the rotation hole and a short closing provided opposite to the opening. And a plate portion 3, and a guide plate portion 4 is formed at an intermediate portion between the both closing plate portions. The guide plate portion 4 is for guiding the shutter 1 along the insertion end surface of the cartridge into the reading / writing device,
The guide plate portion 4 has a spring receiving portion 4c on the right side of the drawing and an extension portion 4a in the opposite direction, and is held from the outside in a guide groove formed along the insertion end face of the cartridge at the tip of the extension portion 4a. Thus, the guide groove engaging portion is formed. A cutout portion 4d is formed in an extension portion 4a extending in the longitudinal direction of the guide plate portion 4, and a reinforcing piece 10 is formed by extending the cutout portion 4d along the lengthwise direction of the extension portion 4a (Fig. 2). ). The reinforcing piece 10 is formed so as not to interfere with the movement of the head h of the reading / writing device when it is vertically inserted in FIG. If the reinforcing piece 10 is formed in this manner, the drive pin 60 is brought into contact with the end surface of the guide groove engaging portion 4b, and even if a force is applied by the drive pin 60 in the direction of opening the shutter 1, the extension portion 4a is deformed. Does not happen. As a result, the insertion of the head h is not hindered, and the shutter 1 is smoothly guided along the insertion end surface of the cartridge into the reading / writing device.

Although the shutter shown in FIG. 1 is used for a single-sided cartridge, as shown in FIG. 3, two long closing plate portions 21, 22 are made to face each other, and both closing plate portions 21, 22 are made to face each other. twenty one
A guide plate portion 23 is provided in the middle part of the guide plate portion 23, a spring receiver 23c for spring engagement is provided at the right end of the guide plate portion 23 in the figure, and an extension portion 23a is formed on the opposite side to the extension portion 23a.
The guide groove engaging portion 23b may be formed at the tip of the. That is, in this way, the shutter 20 for the double-sided cartridge is
In order to achieve the above, both the closing plate portions 21, 21 are formed in the same elongated shape, and notch portions 23d, 23d are provided on both sides in the width direction of the guide plate portion of the extension portion, and the notch portion 23d is bent. Alternatively, the reinforcing pieces 25, 25 may be formed as shown in FIG.

In particular, the provision of the reinforcing piece, which is the gist of the present invention, is an extension part.
This is effective for a double-sided cartridge having a narrow width w of 23a. That is, in the case of a double-sided cartridge, the extension portion 23a
This is because notches must be provided on both sides in the width direction of the head h, and the head h passes through these notch portions 23d, 23d.

The reinforcing structure shown in FIG. 4 has a U-shaped cross section, but as shown in FIGS. 5 and 6, the extension part is formed into a gutter-shaped receding cross-section and an extension part 30. In this case, the two end faces 30a, 30a of the extension portion 30 may have the head h so as not to interfere with the passage of the head h.
Extends in the insertion direction.

[Effect of device]

Since the present invention is configured as described above, the extended portion of the guide plate portion of the shutter is reinforced, so that when the shutter is driven by the drive pin, the deformation of the extended portion is effectively prevented and the shutter moves smoothly. Moreover, the present invention has the effect of not obstructing the insertion of the head of the reading / writing device, and the present invention is particularly effective for a double-sided cartridge having a narrow extension portion.

[Brief description of drawings]

1 is a perspective view of a shutter of the present invention, FIG. 2 is a cross-sectional view of an extension portion of the shutter of FIG. 1, FIG. 3 is a perspective view of a shutter showing another embodiment of the present invention, and FIG. 3 is a cross-sectional view of the extended portion of the shutter shown in FIG. 3, FIG. 5 is a partial perspective view of the extended portion of another embodiment of the present invention, and FIG. 6 is a cross section of the extended portion of the shutter shown in FIG. FIG. 7 is a perspective view of the cartridge previously disclosed by the applicant of the present application, and FIG.
It is a perspective view of the shutter shown in the figure. 1,20 ... Shutter, 2,3,21,22 ... Closure plate part, 4,23 ... Guide plate part, 4a, 23a, 30 ... Extension part, 10,25 ... Reinforcing piece.

Claims (2)

[Scope of utility model registration request] 1. A rotary hole for inserting a spindle, which is formed by bending a single plate and is opposed to each other, for rotating a disk in a disk cartridge, and a read / write head provided adjacent to the rotary hole. There is a closing plate portion for opening and closing the insertion hole, and the bent portions of these closing plate portions are engaged with the insertion end surface of the cartridge into the reading / writing device to form a part of the guide plate portion. A disc cartridge in which a plate portion is extended in the longitudinal direction to form an extended portion, and a guide groove engaging portion which engages with a guide groove formed in the insertion end of the cartridge so as to be held from the outside at the extended end thereof. In the shutter, the extension portion of the guide plate portion has a reinforcement structure reinforced against external force, and the reinforcement structure is folded at least on one side in the width direction along the longitudinal direction of the extension portion. Shutter of the disk cartridge, characterized in that the Gaité formed. 2. A rotation hole for inserting a spindle, which is formed by bending a single plate, for rotating a disk in a disk cartridge so as to face each other, and a read / write head provided adjacent to the rotation hole. There is a closing plate portion for opening and closing the insertion hole, and the bent portions of these closing plate portions are engaged with the insertion end surface of the cartridge into the reading / writing device to form a part of the guide plate portion. A disc cartridge in which a plate portion is extended in the longitudinal direction to form an extended portion, and a guide groove engaging portion which engages with a guide groove formed in the insertion end of the cartridge so as to be held from the outside at the extended end thereof. In the above-mentioned shutter, the extended portion of the guide plate portion has a reinforcing structure which is reinforced against external force, and the reinforcing structure is formed into a gutter-like reclining cross-section. Shutter di.