JP2005267711A - Disk cartridge - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve easiness of assembling when a shutter spring is incorporated using a tool in a disk cartridge. <P>SOLUTION: The disk cartridge 100 includes a housing which houses rotatably a disk of a disk type and has an opening for making a recording and reproducing head access to the surface of a disk; and a rotary shutter 107 provided rotatably at the housing for opening and closing the opening, wherein one end of a spring member 114 is locked into the housing and the other end is locked into a rotary shutter 107, the spring member 114 is arranged between an outer peripheral wall 108 of the rotary shutter 107 and the housing. A shunt part 126 for a jig 130 for incorporating the spring member 114 and being one part of the housing is formed in both or either of the vicinity of a first restraint part 128 and the vicinity of a second restraint part 116 at the time of incorporating. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge used in a mobile device such as a digital camera, and more particularly to a disk cartridge of a type in which a spring for urging a rotary shutter of the disk cartridge in a closing direction is incorporated using a jig. It is.

  2. Description of the Related Art Conventionally, in mobile devices such as digital cameras, an ultra-small magnetic disk cartridge called “click!” As shown in FIGS. 7 and 8 is used as a recording medium.

  FIGS. 7A to 7C show a plan view, a right side view, and a bottom view of the magnetic disk cartridge 1 in a closed state, and FIG. 8 shows an exploded perspective view thereof. A magnetic disk cartridge 1 is a flat housing having a width of 50 mm, a depth of 55 mm, and a thickness of 1.95 mm, which is composed of a resin frame 2 including a pushing portion 2a and upper and lower shell halves 3 and 4 made of a thin metal plate. A magnetic disk 5 having a diameter of 1.8 inches (45.7 mm) is rotatably accommodated therein.

  The magnetic disk cartridge 1 is configured to be inserted into the drive device 20 shown in FIG. 10 in an inserted manner, and a magnetic head (recording / reproducing head) 27 provided in the drive device 20 is installed in the housing of the magnetic disk cartridge 1. Is provided with a V-shaped opening 6 for accessing the surface of the magnetic disk 5, and a rotary shutter 7 for opening and closing the opening 6.

  The rotary shutter 7 includes upper and lower shutter members 7U and 7D (see FIG. 8) engaged with each other. The upper shutter member 7U rotates to the upper shell half 3 and the lower shutter member 7D rotates to the lower shell half 4. It is pivotally supported. A liner 18 is interposed between the magnetic disk 5 and the upper and lower shutter members 7U and 7D.

  7A, a notch 8 is formed at the front end portion of the left side surface of the housing so as to be engaged with the engaging member 29 of the drive device 20 to ensure positioning within the drive device 20. A small window 9 is formed at the front end of the right side surface as shown in FIG. 7B to allow the shutter lock member 11 for locking the rotary shutter 7 to the closed position.

  The lower shell half 4 of the housing is formed with a circular center hole 4a for allowing the center core 10 of the magnetic disk 5 to face the outside, and an arcuate groove 4b concentric with the rotary shutter 7, and the lower shutter member 7D has A shutter knob 7b that projects from the arcuate groove 4b and moves along the arcuate groove 4b to open and close the rotary shutter 7 is fixed.

  FIG. 9 is an enlarged plan view of the frame 2 and shows a state where the guide wire 13 and the coil spring (compression coil spring) 14 are attached to the frame 2 together with the lower shutter member 7D. The rotary shutter 7 comprising the upper shutter member 7U and the lower shutter member 7D is spring-biased in the closing direction (counterclockwise in FIG. 9) by a small coil spring 14 having a small diameter. Further, the guide wire 13 penetrates the coil spring 14 in the length direction. Both ends of the guide wire 13 are locked to the frame 2 at locking portions 2 b and 2 c at the left and right ends of the frame 2 that face the outer peripheral surface of the rotary shutter 7. The lower shutter member 7D is integrally provided with a spring locking piece 7d that slides along the guide wire 13 as the rotary shutter 7 rotates.

  As shown in FIG. 9, the coil spring 14 is contracted between the locking portion 2 b of the frame 2 and the spring locking piece 7 d of the rotary shutter 7 so as to expand and contract along the guide wire 13, so that the rotary shutter 7 is spring-biased in the closing direction (counterclockwise in FIG. 9). From this state, when the rotary shutter 7 is rotated clockwise in FIG. 9, the coil spring 14 is compressed between the locking portion 2b and the spring locking piece 7d.

  The drive device 20 shown in FIG. 10 is a TYPE II PC card type drive device having outer dimensions of 53 mm in width, 85 mm in depth, and 5 mm in thickness, and includes a slot 21 into which the magnetic disk cartridge 1 is inserted and a center core of the magnetic disk 5. A spindle motor 22 having a spindle 23 that magnetically attracts 10, a head actuator 24, a swing arm 25, and a head suspension 26 supported by the swing arm 25 are provided. A magnetic head 27 that accesses the surface of the rotating magnetic disk 5 and records / reproduces information is provided at the tip of the head suspension 26.

  Further, the drive device 20 includes a push / push type cartridge locking / eject mechanism 28 having the above-described engaging member 29 that engages with the notch 8 of the magnetic disk cartridge 1, and a digital in which the drive device 20 is loaded. And an input / output interface 30 for electronic devices such as cameras and personal computers.

  A shutter knob locking wall 31 extending in the left-right direction so as to be orthogonal to the insertion direction of the magnetic disk cartridge 1 is formed as a shutter opening means on the right side behind the slot 21 of the drive device 20 and is locked in the closed position. An unlocking member 19 is provided to release the locked state of the rotary shutter 7 when the magnetic disk cartridge 1 is inserted.

  When the magnetic disk cartridge 1 is inserted into the drive device 20, the lock release member 19 first presses the shutter lock member 11 to release the lock state of the rotary shutter 7. In this state, the shutter knob 7b is the shutter knob of the drive device. Since it engages with the locking wall 31, the rotary shutter 7 is rotated while compressing the coil spring 14 in such a manner that the shutter knob 7 b slides along the shutter knob locking wall 31 as the magnetic disk cartridge 1 is pushed, When the engaging member 29 of the drive device 20 is engaged with the notch 8 of the magnetic disk cartridge 1 at the same time, the magnetic disk cartridge 1 remains in a state where the coil spring 14 is compressed as shown in FIG. Thus, it is loaded at a predetermined position in the drive device.

  On the other hand, when the magnetic disk cartridge 1 is ejected, the pushing portion 2a is pressed so that the cartridge locking / ejecting mechanism 28 pushes out the magnetic disk cartridge 1, and the rotary shutter 7 is turned into a coil as the magnetic disk cartridge 1 is pulled out. The urging force of the spring 14 is rotated to the position shown in FIGS. 7A, 7 </ b> C, and 9, and is locked by the shutter lock member 11.

  Grooves G in which both end portions of the guide wire 13 are press-fitted and locked are formed in the locking portions 2b and 2c for locking the both ends of the guide wire 13 in the frame 2. Enlarged portions 13 a and 13 b that prevent the extraction from G are formed by crushing the guide wire 13. These enormous portions 13 a and 13 b are large enough to allow the guide wire 13 to be inserted into the coil spring 14. Have

  One locking portion 2b provided in the frame 2 for locking one end of the guide wire 13 is formed with a locking wall 2d for locking one end of the coil spring 14, and the other end of the guide wire 13 is connected to the other end of the guide wire 13. A locking wall 2e for locking the spring locking piece 7d of the rotary shutter 7 is formed in the other locking portion 2c to be locked.

  Incidentally, in the conventional magnetic disk cartridge 1 described above, as is clear from FIGS. 7 to 9, as a means for urging the rotary shutter 7 toward the closed position, it is long and has a small diameter that expands and contracts along the guide wire 13. A coil spring 14 is used, and the mechanism operates to follow the movement stroke of the outer peripheral portion of the rotary shutter accompanying the rotation of the rotary shutter 7.

  Such a mechanism is an indispensable means for ensuring the operation of the rotary shutter 7, but in order to incorporate such a long coil spring 14 into the housing of the magnetic disk cartridge 1, first, a coil is used. The spring 14 is contracted and pushed into the guide wire 13, holding both ends of the guide wire 13 while contracting the coil spring 14 with fingers of both hands, and using the jig, both ends of the guide wire 13 are bent while curving the guide wire 13. An operation of press-fitting into the groove G is necessary. However, the periphery of the groove G is narrow and a jig is used, so that the assembling workability is extremely poor.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a disc cartridge in which the assemblability of a shutter spring using a jig is improved.

  The disk cartridge of the present invention includes a housing that rotatably accommodates a disk-shaped disk as a recording medium and has an opening for allowing a recording / reproducing head of a drive device to access the surface of the disk, and a normal for opening and closing the opening. Is provided with a rotary shutter rotatably provided in the housing so as to be biased in the closing direction by the spring member, and the spring member has one end of the spring member as the first locking portion of the housing and the other end as the rotary. In a disc cartridge that is respectively locked to the second locking portion of the shutter and is disposed between the outer peripheral wall of the rotary shutter and the housing, the disk cartridge is a part of the housing, in the vicinity of the first locking portion and the spring member An escape portion for the jig for incorporating the spring member is formed in both or either of the vicinity of the second locking portion when assembling. It is characterized in that there.

  The housing has two shell halves that cover the disk from both sides of the disk and accommodates the disk, and a frame that supports the two shell halves, and the escape portion is an outer periphery of the frame and the rotary shutter. The frame can be formed so as to face between the walls.

  The escape portion may be a notch or a bottomed recess.

  Further, the first locking portion may be a columnar portion protruding from the bottomed recessed portion of the frame, and the tip of the columnar portion may be configured to protrude upward from the main surface of the frame.

  Further, the escape portion is preferably covered with a shell half.

  According to the first aspect of the present invention, a disk cartridge includes a housing that rotatably accommodates a disk-shaped disk as a recording medium, and a rotary shutter that is rotatably provided in the housing so as to open and close the opening of the housing. I have. And it is a part of this housing, both near the first locking portion of the housing where one end of the spring member is locked and near the second locking portion of the rotary shutter when the other end of the spring member is assembled. Alternatively, a relief portion for a jig for incorporating the spring member is formed on either one of them. By providing the relief portion in this way, the spring member can be easily attached to the locking portion without the jig interfering with the housing, so that the assembly of the shutter spring is improved.

  The housing has two shell halves that cover the disk from both sides and accommodates the disk, and a frame that supports the two shell halves, and the escape portion is formed between the frame and the outer peripheral wall of the rotary shutter. When the frame is formed so that it faces, the spring member can be easily attached without the jig interfering with the frame due to the relief part of the frame, so that the assembly of the shutter spring is improved. To do.

  Further, when the relief portion is a notch or a bottomed recess, the presence of the notch or the bottomed recess allows the spring member to be pushed in sufficiently without the jig interfering with the frame. Improves.

  Further, when the first locking portion is a columnar portion protruding from the bottomed recessed portion of the frame, and the tip of the columnar portion is configured to protrude upward from the main surface of the frame, the shutter spring can be easily Since it can attach to this columnar part, the assemblability of a shutter spring improves.

  Furthermore, when the escape portion is covered with the shell half, the dustproof effect and the reinforcing effect of the locking portion can be obtained.

  Embodiments of a disk cartridge according to the present invention will be described below in detail with reference to the accompanying drawings. In the description, the same members as those described in the background art will be described with the same reference numerals.

  1 and 2 are plan views of a disk cartridge 50 according to the first embodiment of the present invention. FIG. 1 shows a state in which an end portion of a guide wire 13 is attached to a frame 52, and FIG. 13 shows a state in which the compression coil spring 14 is mounted. Since the basic configuration of the disk cartridge 50 is the same as that of the disk cartridge 1, the detailed description of the configuration is omitted.

  First, a description will be given with reference to FIG. The lower shutter member 57D of the rotary shutter 57 has a spring locking piece (second locking portion) 57d near the right end of the frame 52 at the position where the rotary shutter 57 shown in FIG. The spring locking piece 57d has a generally cylindrical shape protruding integrally with the arcuate outer peripheral wall 58d of the lower shutter member 57D. The outer peripheral wall 58d forms part of the outer peripheral wall 58 of the rotary shutter 57. Hereinafter, the relationship with the outer peripheral wall 58 of the rotary shutter 57 will be described.

  The frame 52 is formed with an arc-shaped inner wall 60 that is separated from the outer peripheral wall 58 at substantially the same interval. An arcuate space 62 is formed between the arcuate inner wall 60 and the outer peripheral wall 58 of the rotary shutter 57. At both ends of the frame 52, locking portions (first locking portions) 52 b and 52 c are protruded into the arcuate space 62 integrally with the frame 52. Grooves G1 and G1 along the longitudinal direction of the arcuate space 62 are formed in the respective locking portions 52b and 52c so as to open upward.

  A bottomed recess 66 is formed in the vicinity of the locking portion 52c as a relief portion of a jig (not shown). The bottomed recess 66 is formed to a depth similar to the depth of the groove G1 formed in the locking portion 52c. The right end portion of the guide wire 13 is inserted into the spring locking piece 57d and pressed into the groove G1 of the locking portion 52c with a jig. At this time, a part of the jig is positioned in the bottomed recess 66 so as not to interfere with the frame 52. In this case, the shape of the tip of the jig that can enter the groove G1 is suitable. The bottomed recess 66 has a triangular shape facing the arcuate space 62 in the present embodiment, but may have an arbitrary shape. Of course, the size may be larger than that shown in FIGS. 1 and 2 depending on the size of the jig.

  Next, as shown in FIG. 2, a compression coil spring 14 is attached to the guide wire 13. Then, the guide wire 13 to which the coil spring 14 is attached is bent in the direction indicated by the arrow 68, and the left end portion of the guide wire 13 is press-fitted into the groove G1 of the locking portion 52b. In this case, when the left end portion of the guide wire 13 is press-fitted, since the outer peripheral wall 58d of the lower shutter member 57D is not in the vicinity of the locking portion 52b, the escape portion of the jig is not necessary. The coil spring 14 is attached in the arcuate space 62 in the above manner.

  Next, a second embodiment of the present invention will be described with reference to FIGS. In the second embodiment, a tension coil spring is used instead of the compression coil spring, and FIG. 3 shows the disk cartridge 100 not equipped with the tension coil spring with the upper shutter member removed, and FIG. FIG. 3A is a plan view, and FIG. 3B is a partially enlarged perspective view of FIG. 4 shows the disk cartridge 100 with the tension coil spring 114 mounted thereon, FIG. 4A is a plan view of the disk cartridge 100, and FIG. It is a partial expansion perspective view which shows the state attached to. FIG. 5 is a plan view when the rotary shutter 107 of the disk cartridge 100 of FIG. 4 is opened. Since the basic configuration of the second embodiment is the same as that of the disk cartridge 1, detailed description of the configuration is omitted.

  First, a description will be given with reference to FIG. The lower shutter member 107D constituting the rotary shutter 107 is provided with a locking portion (second locking portion) 116 that is located near the lower end of the outer peripheral wall 108d in a state where the rotary shutter 107 is closed. The locking portion 116 protrudes in a cylindrical shape from the outer peripheral wall 108d of the lower shutter member 107D, and has a hole along the arcuate space 112 inside. A small piece 122 that prevents the pulling coil spring 114 (FIG. 4), which will be described later, from coming off, is integrally projected at a position spaced counterclockwise from the locking portion 116. On the other hand, a bottomed recess 126 facing the arcuate space 112 is formed at the right end of the frame 102. A columnar portion (first locking portion) 128 projects from the right end and the upper end of the bottomed recess.

  Next, a mode in which the tension coil spring 114 is attached to the lower shutter member 107D in this state will be described with reference to FIG. One end of the tension coil spring 114 is locked to the columnar portion 128, and the other end is locked to the locking portion 116 of the lower shutter member 107D. In this state, the tension coil spring 114 is not loaded in the tension direction. In order to attach the tension coil spring 114 to the columnar portion 128, first, the left end portion of the tension coil spring 114 formed in a U-shape is hooked on the locking portion 116 as shown in FIG. Next, as shown in FIG. 4B, the U-shaped end portion 115 of the tension coil spring 114 is hooked on the convex portion 130 a at the tip of the jig 130. Then, the jig 130 is disposed in the vicinity of the columnar portion 128 so that the U-shaped end portion 115 is caught by the columnar portion 128. At this time, the bottom portion of the jig 130 is prevented from interfering with the frame 102 by the above-described bottomed recess 126, and the tension coil spring 114 can be easily assembled to the columnar portion 128. In this state, the tension coil spring 114 is lightly loaded to keep the rotary shutter 107 closed.

  When the rotary shutter 107 is rotated in the opening direction, that is, clockwise as shown by the arrow 132 in FIG. 5, the tension coil spring 114 arranged in this manner is in an extended state along the arcuate space 112. Then, the rotary shutter 107 is urged in the closing direction.

  Further, in the above-described second embodiment, the case where the bottomed recess 126 is provided has been described. However, instead of the bottomed recess 126, a notch having a shape shown in FIG. FIG. 6 is a plan view showing a modification of the escape portion. The notch 166 is formed so as to face between the frame 152 and the rotary shutter 107 (not shown in FIG. 6). The notch 166 is formed with a locking projection (first locking portion) 167 that protrudes integrally from the inner wall 166 a in the notch 166 into the thickness of the frame 152. The aforementioned tension coil spring 114 is locked to the locking protrusion 167. Since the configuration of the other parts is the same as that of the disk cartridge 100, a detailed description is omitted. Of course, such a notch may be provided in the disk cartridge 1 of the first embodiment.

  As mentioned above, although preferable embodiment of this invention was described in detail, it is needless to say that the shape of the latching | locking part integrally formed from each shutter member may be changed suitably. For example, it may have a shape like an L-shaped bracket that hooks a coil spring or may simply be a protruding piece. Further, the columnar portion 128 of the frame 102 may protrude beyond the bottomed recess 128 beyond the main surface 102 a of the frame 102. Moreover, it is preferable that the above-described relief portions 66, 126, and 166 are covered with a half shell.

1 is a plan view of a disk cartridge according to a first embodiment of the present invention, showing a state where an end of a guide wire is attached to a frame. FIG. 1 is a plan view showing a state where a compression coil spring is attached to a guide wire in the disk cartridge of FIG. The disk cartridge of the second embodiment of the present invention is shown with the upper shutter member removed, FIG. 3 (a) is a plan view, and FIG. 3 (b) is a partially enlarged perspective view of FIG. 3 (a). 3 is a disk cartridge shown in FIG. 3 with a tension coil spring attached, FIG. 4 (a) is a plan view, and FIG. 4 (b) is a partially enlarged perspective view showing a state in which the tension coil spring is attached to the locking portion by a jig. Figure FIG. 4 is a plan view when the rotary shutter of the disk cartridge in FIG. 4 is opened. The top view which shows the modification of an escape part The disk cartridge when the rotary shutter of the known disk cartridge is in a closed state is shown, (a) is a plan view, (b) is a right side view, and (c) is a bottom view. 7 is an exploded perspective view of the known disk cartridge shown in FIG. FIG. 8 is an enlarged plan view of the frame shown in FIG. The top view which shows the principal part of the other party drive apparatus in which a disk cartridge is inserted

Explanation of symbols

5 Disc 6 Opening 14 Compression coil spring (spring member)
20 drive device 27 recording / reproducing head 50, 100 disk cartridge 52, 102, 152 frame 52b, 128, 167 first locking part 54 lower shell half 57, 107 rotary shutter 57d, 116 second locking part 58, 58d, 108, 108d Outer peripheral wall 66, 126 Bottomed recess (relief)
114 Tension coil spring (spring member)
130 Jig 166 Notch (Relief)

Claims (6)

A disk-shaped disk as a recording medium is rotatably accommodated, and a housing having an opening for allowing a recording / reproducing head of a drive device to access the surface of the disk, and a spring member for normally opening and closing the opening. A rotary shutter rotatably provided on the housing so as to be biased in the closing direction, wherein the spring member has one end of the spring member as the first locking portion of the housing and the other end as the rotary. In the disc cartridge that is respectively locked to the second locking portion of the shutter and disposed between the outer peripheral wall of the rotary shutter and the housing,
A jig for assembling the spring member in a part of the housing, in the vicinity of the first locking portion and / or in the vicinity of the second locking portion when the spring member is assembled. A disk cartridge having a relief portion formed therein.   The housing has two shell halves that cover the disk from both sides of the disk and accommodates the disk, and a frame that supports the two shell halves, and the escape portion is the frame and the rotary. 2. The disc cartridge according to claim 1, wherein the disc cartridge is formed on the frame so as to face between the outer peripheral walls of the shutter.   3. The disc cartridge according to claim 2, wherein the escape portion is a notch.   3. The disc cartridge according to claim 2, wherein the escape portion is a bottomed recess.   The said 1st latching | locking part is the columnar part protrudingly provided by the said bottomed recessed part of the said frame, and the front-end | tip of this columnar part protrudes upwards from the main surface of the said frame. Disc cartridge.   6. The disk cartridge according to claim 2, wherein the escape portion is covered with the shell half.

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