JP2744227B2 - Disk cartridge and method of manufacturing the same - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge containing an information recording disk such as a magnetic disk and an optical disk, and a method of manufacturing the same. 2. Description of the Related Art A cartridge case having a disk storage space formed therein and having a head insertion opening at a predetermined position,
An information recording disk rotatably stored in the disk storage space of the cartridge case, a shutter for opening and closing the head insertion opening by moving along the front surface of the cartridge case, and elastically biasing the shutter in a closing direction at all times; Conventionally, various proposals have been made for a disk cartridge provided with a torsion spring. Conventionally, a magnetic disk container as described in Japanese Utility Model Publication No. 45-10063 has been proposed. This magnetic disk container has a structure in which a window is opened at a predetermined position, and a shutter for opening and closing the window, a slider supporting the shutter, and the like are movably arranged in the container. [0004] In this magnetic disk container, a shutter is arranged in a cantilever manner in the container, and is close to the recording surface of the magnetic disk. For this reason, the edge of the shutter may collide with the recording surface of the magnetic disk and may be damaged by vibration during handling such as transportation of the magnetic disk container. When the magnetic disk container is placed, there is a cantilever-shaped shutter below the window of the container, and there is a recording surface of the magnetic disk below the shutter. Pressing the shutter below, or when an object falls under the window, the shutter may be pushed and its edge may hit the recording surface of the magnetic disk, causing damage,
These interfere with data recording / reproduction, cause errors, and reduce reliability. When the cross section of the shutter is U-shaped,
Since the magnetic disk is inserted inside the U-shaped shutter to which the slider is connected and is stored in the container in that state, the assembling work becomes complicated and not only is the efficiency inefficient, but also at this time the shutter May hit the recording surface of the magnetic disk and damage it. SUMMARY OF THE INVENTION An object of the present invention is to provide a disk cartridge which solves the drawbacks of the prior art, is excellent in reliability, ensures that the shutter is securely removed, and has good assembling workability, and a method of manufacturing the same. It is in. In order to achieve this object, a first aspect of the present invention is to provide a cartridge case having a disk storage space formed therein and having a head insertion opening at a predetermined position, and a cartridge for the cartridge case. An information recording disk rotatably stored in a disk storage space of a case, a shutter for opening and closing the head insertion opening by moving along the front surface of the cartridge case, and an elastic biasing of the shutter in a closing direction at all times And a slider extending in the direction of movement of the shutter and arranged near the front surface of the cartridge case so as to be movable in the same direction as the shutter. The slider is movably disposed on a slider guide portion formed substantially linearly inside the cartridge case and along the front surface of the cartridge case, and the shutter is disposed outside the cartridge case. The shutter has a pair of opposed flat plate portions and an end plate portion connecting the ends of the flat plate portions, and has a U-shaped cross section, and a part of the flat plate portion has, for example, a tongue piece or the like. The shutter and the slider are integrally connected by sandwiching a part of the slider between the projection and the inner surface of the end plate portion. According to a second aspect of the present invention, there is provided a cartridge case comprising an upper and lower case having a disk storage space formed therein and having a head insertion opening at a predetermined position, and a disk in the cartridge case. An information recording disk rotatably stored in a storage space, a shutter that opens and closes the head insertion opening by moving along the front surface of the cartridge case, and a spring that always elastically biases the shutter in a closing direction. A slider extending in the direction of movement of the shutter and provided near the front surface of the cartridge case and movably arranged in the same direction as the shutter. A slider guide portion is provided extending substantially linearly inside the cartridge case and along the front surface of the cartridge case, and an exposed portion for exposing a part of the slider from the cartridge case is formed on the front surface of the cartridge case. After the information recording disk is stored in the disk storage space, the slider is disposed in the slider guide portion and the upper and lower cases are combined, and then a pair of opposed flat plate portions and the ends of the flat plate portions are connected to each other. A portion of the slider that has an end plate portion to be connected, and a shutter in which a projection such as a tongue piece is formed in a part of the flat plate portion is inserted from the outside of the cartridge case, and is exposed at the exposed portion. Between the projection of the shutter and the inner surface of the end plate, whereby the shutter and the slider are integrally connected. That. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A disk cartridge according to an embodiment of the present invention will be described below with reference to the drawings. 1 is a plan view showing a main part of a lower case side, FIG. 2 is a front view including a cross-sectional part, FIG. 3 is a side view including a cross-sectional part, FIG. 4 is a main part plan view showing a state where a shutter is opened, FIG. 5 is a development view of the cartridge case. In these figures, 50 is the upper case, 5
Reference numeral 1 denotes a lower case, which is overlapped to form a storage space for storing a disk (not shown), for example, a magnetic disk therein. As shown in FIG. 5, the upper case 50 and the lower case 51 have holes 52 and 53 at the center thereof, into which a drive shaft of a disk drive (not shown) is inserted. And a substantially rectangular head insertion port 56,
A concave portion 58, 59 is formed near the head insertion port 56, 57 on the outer surface. Reference numeral 60 denotes a shutter for opening and closing the head insertion openings 56 and 57. As shown in FIG. 3, the shutter 60 has a pair of opposed flat plate portions 61 and 62, and has a generally U-shaped basic sectional shape. The flat portions 61 and 62 are slidably mounted on the upper and lower cases 50 and 51 and the concave portions 58 and 59 of the lower cases 50 and 51 are mounted thereon. Shutter 60
1, as shown in FIG.
A tongue 63 is provided at the upper, lower, left and right portions located at 51a. Reference numeral 64 denotes front surfaces 50a, 5 of the cases 50, 51.
A front wall 90 of the cases 50 and 51 and a front wall 90 thereof;
And rising portions 81R, 81L protruding from the front and left sides of the head insertion openings 56, 57, respectively, and are accommodated in slider guide grooves 65, 66 extending substantially linearly. As shown in FIG. 1, an opening-like exposed portion 95 that exposes a part of the slider 64 is formed in a part of the front wall 90 of the case 50, 51, and the slider 64 that is exposed from the exposed portion 95 is formed. The part and the shutter 60 are connected. The basic shape of the cross section of the portion where the shutter 60 is mounted is a T having a protruding portion 67 protruding vertically.
The basic shape of the cross section of the other part is rectangular. As shown in FIG. 1, a step 68 is provided on the right side. As shown in FIG. 2, the step 68 can be engaged with a step 69 formed in the slider guide groove 66 of the lower case 51. I have. The shutter 60 includes a slider 64 and a case 5.
The shutters 60 are housed in the slider guide grooves 65 and 66 of the shutters 60 and mounted on the outside of the cases 50 and 51 in a state where the cases 50 and 51 are overlapped. The mounting is completed when the tongue pieces 63 pass over the protruding portions 67 while the portions 61 and 62 are pushed toward the concave portions 58 and 59 of the cases 50 and 51 so as to get over. At this time, the tip end surface of the tongue piece 63 comes into contact with the protruding portion 67, and the shutter 60 is prevented from coming off. For example, as shown in FIG. 1, the length L1 of the slider 64 in the shutter movement direction is designed to be sufficiently longer than the width L2 of the shutter 60 in the shutter movement direction.
(In the present embodiment, L1 is about four times L2). Reference numeral 70 denotes a lever as a direction changing member which is disposed in a dead space at the front corner of the lower case 51 and interlocks with the shutter 60. For example, the lever 70 is disposed on the lower case 51 side.
One end 71 is pivotally connected to an end 73 of the slider 64 near the step 68 by a pin 72, and the other end 74 is inserted into the case 51 by the side surface 75 of the lower case 51. An operation portion 77 is provided so as to prevent the lever 70 from being prevented, and a lever 78 has a projection 78 at the center. Reference numeral 79 denotes a spring whose trunk is held by a projection 78 of a lever 70, one end of which is engaged with the lever 70, and the other end of which is engaged with a projection 80 provided on the lower case 51.
0 floats with a certain distance between the projection 80 and the projection 78,
The shutter 60 is always urged in the closing direction (H direction) via the slider 46, and the other end of the lever 70 (the operating portion 77) is always urged to abut on the side surface 75 of the lower case 51 to move. doing. The rising portion 81 formed in the groove 66 of the lower case 51 has a lower portion 82 at a portion located on the end portion 73 side of the slider 64, and the end portion 71 of the lever 70
Is connected to the end 73 of the slider 64 beyond this portion 82. In FIGS. 1 and 4, reference numeral 83 denotes a guide member provided in the disk drive, and reference numeral 84 denotes a guide member.
Is formed by cutting and raising a part of the operating portion 7 of the lever 70.
7 are engaging members. A concave portion 91 extending in the insertion direction A of the disk cartridge is formed on the right side surface of the lower case 51 in the right side of the drawing, and the operating portion 77 of the lever 70 faces the concave portion 91. In this embodiment, a slider 64, a lever 70, a spring 79, and the like are incorporated in a lower case 51, a disk is housed in a recess 55 of the lower case 51, an upper case 50 is combined with the lower case 51, and a shutter 60 is mounted. Then, the upper case 50 and the lower case 51 are fastened and integrated with screws or the like. When the disc cartridge is not used, the step 68 of the slider 64 is moved by the urging force of the spring 79 through the lever 70 to the step 69 of the lower case 51 as shown in FIG.
, And the shutter 60 connected to the slider 64 closes the head insertion ports 56 and 57. In this state, when the disk cartridge is inserted in the direction of arrow A in FIG. 1 along the guide member 83 of the disk drive, the locking member 84 is inserted into the concave portion 91 and comes into contact with the operating portion 77 of the lever 70. Subsequently, when the disc cartridge is pushed in, the lever 70 moves in the direction of arrow B against the force of the spring, whereby the slider 64 slides in the direction of arrow C, and the shutter 60 also slides in the direction of arrow D. When the insertion of the disk cartridge is completed, the head insertion ports 56 and 57 are opened as shown in FIG. Even in this open state, the slider 64 is engaged with the front wall 90 and the left and right rising portions 81R and 81L. Then, the magnetic head enters the disk cartridge through the head insertion port 56 or the head insertion port 57 and comes into contact with the magnetic disk, so that desired recording / reproduction is performed. When the disk cartridge is moved in the direction E in FIG.
The operation unit 77 engaged with the actuator 4 starts moving along the projections 76 and the side surfaces 75 of the cases 50 and 51 by the force of the spring 79, and the lever 70 slides in the arrow F direction and the slider 64 slides in the arrow G direction. Then, the shutter 60 moves in the direction of arrow H, and the head insertion ports 56 and 57 are closed. In this embodiment, when assembling, the slider 64, the lever 70, the spring 79, and the like are mounted on the lower case 51 and sent to the next assembling step to store the disk.
The upper case 50 is overlaid, etc.
4 does not need to be flexible because it performs a linear sliding operation. Further, the locking member 84 of the disk drive can be provided at a position sufficiently distant from the magnetic head device, so that the restrictions on the arrangement of parts are relaxed and the structure of the disk drive is simplified. As described above, according to the first aspect of the present invention, the slider is movably disposed on the slider guide portion formed substantially linearly inside the cartridge case and along the front surface of the cartridge case. A shutter is disposed outside the cartridge case, the shutter has a pair of opposed flat plate portions, and an end plate portion connecting end portions of the flat plate portions, and has a U-shaped cross section. A protrusion is formed on a part of the flat plate part, and a part of the slider is sandwiched between the protrusion and the inner surface of the end plate part, so that the shutter and the slider are integrally connected. It is a feature. Since the shutter is outside the cartridge case and the cartridge case is interposed between the shutter and the information recording disk, the shutter does not directly contact the information recording disk due to vibration or external force. Therefore, the recording surface of the information recording disk is not damaged by the edge of the shutter unlike the conventionally proposed one. Further, since the slider is inserted into the slider guide portion inside the cartridge case, and the slider and the shutter are connected through the exposed portion, the slider performs both functions of guiding and preventing the shutter from coming off. Therefore, the shutter is slidably disposed outside the cartridge case, so that there is no concern that the shutter will fall out of the cartridge case even if an impact force is applied to the shutter when the disk cartridge falls, for example. Thus, it is possible to provide a disk cartridge which is excellent in operation reliability and in which the shutter is reliably prevented from coming off. According to the second aspect of the present invention, as described above, the slider guide portion extending substantially linearly inside the cartridge case and along the front surface of the cartridge case is provided, and a part of the slider is exposed from the cartridge case. An exposed portion is formed on the front surface of the cartridge case, the information recording disk is stored in the disk storage space, the slider is arranged on the slider guide portion, the upper case is combined with the lower case, and a pair of opposed flat plate portions, A shutter having an end plate portion connecting the ends of the flat plate portion and having a projection formed on a part of the flat plate portion is inserted from the outside of the cartridge case, and the slider is exposed at the exposed portion. The shutter and the slider are integrally connected by sandwiching the portion between the projection of the shutter and the inner surface of the end plate. In addition to the functions and effects of the first aspect of the present invention, the second aspect of the present invention provides an information recording disk and a slider in a case, and the upper and lower cases are overlapped. Since the shutter can be incorporated from the outside, the assembling work becomes easier, automation can be performed, and productivity can be improved as compared with the conventionally proposed shutter. Further, as in the above-described embodiment, a plurality (two in this embodiment) of nipping portions of the slider between the projections and the inner surfaces of the end plate portions are provided along the moving direction of the shutter. Thus, even if the slider and the shutter move at a high speed, the connection between the two is stabilized.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing a main part on a lower case side of a disk cartridge according to an embodiment of the present invention. FIG. 2 is a front view including a cross section of the disk cartridge. FIG. 3 is a side view including a cross section of the disk cartridge. FIG. 4 is a plan view showing a main part of a lower case side showing a state where a shutter of the disk cartridge is opened. FIG. 5 is an expanded view of an upper case and a lower case of the disk cartridge. [Description of Signs] 50 Upper case 51 Lower case 54, 55 Disk storage recess 56, 57 Head insertion opening 60 Shutter 61, 62 Flat plate 63 Tongue piece 64 Slider 65, 66 Slider guide groove 67 Projection 79 Spring 90 Front wall 95 Exposed part

Claims (1)

(1) A cartridge case in which a disk storage space is formed inside and a head insertion opening is provided at a predetermined position, and information recording rotatably stored in the disk storage space of the cartridge case. A disk, a shutter that opens and closes the head insertion opening by moving along the front surface of the cartridge case, a spring that constantly biases the shutter in a closing direction, and a cartridge that extends in the moving direction of the shutter and A disk guide having a slider disposed in the vicinity of the front surface of the case so as to be movable in the same direction as the shutter; and a slider guide portion formed substantially linearly inside the cartridge case and along the front surface of the cartridge case. The slider is movably disposed, and the shutter is located outside the cartridge case. The shutter has a pair of opposed flat plate portions, and an end plate portion connecting the ends of the flat plate portions, and has a U-shaped cross section, and a part of the flat plate portion. And a shutter and a slider are integrally connected by sandwiching a part of the slider between the projection and an inner surface of the end plate. (2) In claim (1), a plurality of clamping portions of the slider between the projections and the inner surfaces of the end plate portions are provided at intervals along the moving direction of the shutter. Characterized disk cartridge. (3) A cartridge case having an upper and lower case having a disk storage space formed therein and having a head insertion opening at a predetermined position, and an information recording disk rotatably stored in the disk storage space of the cartridge case. A shutter that opens and closes the head insertion opening by moving along the front surface of the cartridge case; a spring that constantly biases the shutter in a closing direction; and a front surface of the cartridge case that extends in the movement direction of the shutter. A disk cartridge manufacturing method comprising: a slider disposed in the vicinity thereof so as to be movable in the same direction as a shutter; and a slider guide portion extending substantially linearly inside the cartridge case and along the front surface of the cartridge case. An exposed portion for exposing a part of the slider from the cartridge case After being formed on the front surface of the cartridge case, storing the information recording disk in a disk storage space, disposing the slider in a slider guide portion, and combining the upper and lower cases, a pair of opposed flat plate portions, A shutter having an end plate portion for connecting the ends of the flat plate portion and having a projection formed on a part of the flat plate portion is inserted from the outside of the cartridge case, and is exposed at the exposed portion. By sandwiching the slider portion between the projection of the shutter and the inner surface of the end plate portion,
A method for manufacturing a disk cartridge, wherein a shutter and a slider are integrally connected.