JPS61214186A - Cartridge - Google Patents

Abstract

PURPOSE:To make it unnecessary to provide a shutter opening and closing structure and a side detecting structure, by superposing a head inserting port on an opening of a shutter, or taking out a cassette housing from the inside of the shutter, and covering the head inserting hole with the shutter. CONSTITUTION:When a cartridge is not used, a cassette housing is taken out of a shutter 1, therefore, a head inserting hole 5 of the cassette housing and an opening 6 of the shutter are not superposed planely, the head inserting hole can be blocked, and when the cartridge is used, the cassette housing is contained in the shutter 1 by energizing the cassette housing and the shutter 1 from both sides, the head inserting hole 5 of the cassette housing and the opening 6 of the shutter are superposed planely, and the head inserting hole can be opened. Also, by containing the cassette housing in the shutter 1, a discoid recording medium can be contained in the shutter 1. In this way, the shutter 1 serves for a shielding member of magnetism, also the side detection can be executed by a positioning pin inserting hole 15 of the lower face of the shutter 1, and a shutter opening and closing structure and a side detecting structure become unnecessary.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application] The present invention relates to a cartridge that can be used to record and reproduce various analog and digital signals, or to record or reproduce various analog and digital signals. ) is a cartridge in which a flexible disk-shaped recording medium is rotatably housed in a cassette housing. The cartridge, which is housed in a housing, is mounted on a recording/reproducing device to rotate the disk-shaped recording medium at high speed, and
The head is brought into sliding contact with the disk-shaped recording medium while moving in the radial direction of the disk-shaped recording medium, and a video signal,
Conventionally, devices that record and reproduce audio signals, digital signals, etc. have been known. In this type of device, the disk-shaped recording medium is housed inside the cassette housing and is attached to the main body of the device, but not all parts of the disk-shaped recording medium are covered by the cassette housing. A head insertion hole into which the head is inserted during recording and playback is provided in a part of the cassette housing, and the disk-shaped recording medium corresponding to this part is exposed to the outside. Dust enters the cassette housing through the cartridge, and this dust adheres to the disk-shaped recording medium.Therefore, conventionally, when the cartridge is not in use, a cartridge with a cross section large enough to cover the head insertion hole is A shutter made of a bent metal plate was movably attached to the cassette housing, and by moving the shutter, the head insertion hole was closed and dust was prevented from adhering to the disk-shaped recording medium.

[Means for solving problems]

The cartridge of the present invention includes a cassette housing comprising an upper and a lower case and having a head insertion hole formed in at least one of them, a disk-shaped recording medium rotatably housed inside the cassette housing, and a head. The shutters are each provided with a shutter for opening and closing the insertion hole, and the shutter is formed to have a cylindrical cross section so that the cassette housing can be stored inside.By storing the cassette housing in the shutter, the head insertion hole is closed with the shutter. By placing the cassette case over the opening of the
The present invention relates to a cartridge characterized in that a head insertion hole is covered with a shutter so that the head insertion hole can be opened or closed.

[For production]

Therefore, with this configuration, since the cassette housing protrudes from the shutter when the cartridge is not in use, the head insertion hole of the cassette housing and Ha of the shutter do not overlap in plane, and the head insertion hole can be closed. When using a cartridge, the cassette housing and shutter are energized from both sides, so that the cassette housing is housed in the shutter, and the head insertion hole of the cassette housing and the opening of the shutter overlap in a plane. It can be opened. Also, by storing the cassette housing in the shutter, the disc-shaped recording medium can be stored in the shutter. By opening the positioning bottle insertion holes on the bottom of the shutter so that they overlap, the cartridge can be installed when the positioning pin on the bottom of the shutter and the positioning pin of the recording/playback device engage, but if the cartridge is not installed in a normal way, the cartridge can be installed. Since the insertion hole and the positioning pin cannot be engaged with each other, the cartridge cannot be installed.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

FIG. 1 is an external perspective view of an embodiment of the present invention,
Fig. 1(a) is an external perspective view showing the state in which the cassette housing comes out from the shutter shutter when the cartridge is not in use and the head insertion hole is closed by the shutter, and Fig. 1(b) is the shutter when the cartridge is in use. FIG. 3 is an external perspective view showing a state in which a cassette housing is housed inside and a head insertion hole is open. In FIG. 1 (α), a disk-shaped recording medium 4 is rotatably housed inside a shutter 1 which is made of a metal plate such as stainless steel and is bent into a cylindrical cross-sectional shape, and the joints are brazed or overlapped and welded. A cassette housing consisting of an upper case 3 and a lower case 2 is attached so as to be slidable in a predetermined direction.

Reference numeral 5 denotes a head insertion hole, which is provided to allow the head of the recording/reproducing device to slide into contact with the disk-shaped recording medium 4 to record and reproduce video signals, audio signals, digital signals, etc.; The opened opening 07 is a head insertion hole provided in the lower case 2 into which the motor shaft for rotating the disk-shaped recording medium 4 is inserted. @8 is the head insertion hole for writing an index. The area where the label is attached is made concave by the thickness of the label by stamping or the like. Reference numeral 9 denotes a positioning bin insertion hole for inserting the cartridge into the positioning bin of the recording/reproducing device. In this state, the head insertion hole is closed, so dust does not enter through the head insertion hole and adhere to the disk-shaped recording medium. ◇Figure 1 (6) shows the cartridge for recording and playback. This figure shows the state in which the cassette housing is slid by hand so as to be housed in the shutter when it is installed in the device. The head insertion hole 6 of the shutter 1 and the head insertion hole 5 of the cassette housing overlap. Therefore, the herald can be brought into sliding contact with the disk-shaped recording medium 4 exposed from the head insertion hole. Furthermore, since the disk-shaped recording medium 4 is housed within the shutter, it can be protected from leakage magnetic flux emitted from the motor of the recording/reproducing device. Furthermore, since the cassette housing is housed within a cylindrical shutter made of a metal plate, the shutter can reinforce the rigidity of the cassette housing. When the cartridge is not in use, the planar size of the cartridge is larger than the outer shape of the cassette housing by approximately the width of the head insertion hole, but when it is in use, the cartridge has approximately the same planar size as the cassette housing. Therefore, it is sufficient that the planar size of the cartridge mounting device of the recording/reproducing apparatus is large enough to accommodate the approximately planar size of the cassette case.

Next, FIG. 2 shows an exploded perspective view of one embodiment of the cartridge of the present invention, in which 1 is a shutter, 2 is a lower case, 6 is an upper case, 4 is a disk-shaped recording medium, 10.11
12 is a spring member, 12 is a protect member, and 13 is a light protector.@Shutter 1 has a head insertion hole 6 passed through it from above and below. Reference numeral 14 denotes a motor shaft insertion hole formed on the lower surface of the shutter at approximately the center of the plane thereof. Reference numeral 015 denotes a positioning pin insertion hole formed on the rear lower surface opposite to the head insertion hole 6 on the front surface. Reference numeral 16 denotes a positioning pin insertion hole formed on the lower surface of the front surface, which is the same as the head insertion hole. The head insertion hole 6 and the positioning pin insertion holes 15 and 16 are respectively configured at positions where the head and positioning pin can be inserted when the cartridge is installed in a recording/reproducing apparatus. In addition, since there is no insertion hole formed on the top surface of the positioning pin insertion hole 16 of the shutter, which corresponds to the positioning pin insertion hole 20 of the cassette case, even if the cartridge is accidentally installed upside down in the recording/reproducing device. When the positioning pin hits the shutter, the positioning pin insertion hole 20 of the cassette case is inserted.
Therefore, the cartridge cannot be installed upside down. Reference numeral 17 denotes a track hole formed on the lower surface to prevent the cassette case from being separated from the inside of the shutter and disassembled, into which a dowel 24 formed on the lower surface of the lower case 2 of the cassette case is inserted. 18. 19 is bent inside the cylindrical cross section, and has a 7-piece part that can be used when the cartridge is not in use.
A spring member 10.11 is engaged which provides a biasing force to slide the cassette housing out of the shutter as much as necessary to close the head insertion hole. The spring member 10 is configured as a coiled spring as shown in FIG. 2, and when assembled in the cassette case (not shown), one end of the spring abuts against the outer periphery of the ring-shaped protrusion 37 of the lower case. The other end is composed of a coiled spring similar to the spring member 11 that is hooked and engaged with the hook part 19 of the shutter, and one end of the spring abuts the outer periphery of the ring-shaped protrusion 37, and the other end of the spring member It is hooked onto and engaged with the hook portion 18 of. The spring member 10 is assembled with one end taken out from between the notches 32 and 36 of the cassette housing, and the spring member 11 is assembled with the tab 21 inserted therein and one end taken out from between the notches 22 and 55.
When the cassette housing is housed in the shutter from the notch side, one end of the spring member is hooked onto the hook portion of the shutter. When the cassette housing is further housed in the shutter, the dowel 24 of the lower case engages with the track hole 17 of the shutter. In this state, the cassette casing and the shutter are engaged, and the spring members 10 and 11 are in a state in which they apply a biasing force to the cassette casing and the shutter.

Next, the cassette housing is composed of a lower case 2 and an upper case 3, and includes spring members 10 and 11, a write protector 13, a protect member 12, a disk-shaped recording medium 4,
A liner (not shown) is housed between the lower case 2 and the upper case 3 between the lower case and the disk-shaped recording medium and between the upper case and the disk-shaped recording medium. Lower case 2
The upper case 6 is made of, for example, an injection molded product made of AES resin containing an antistatic agent, and the lower case 2 and upper case 3 are fitted with lids and their outer peripheries are welded to each other by ultrasonic welding, so that the whole is flat. In addition, a circular motor shaft insertion hole 7 is provided approximately in the center of the lower case 2, and a ring-shaped protrusion 37 coaxial with this motor shaft insertion hole is integrally molded. The write protect hole 23 in the lower case has a rectangular shape, and the write protect hole 30 in the upper case has a square shape.

In addition, the square dowel 31 of the light protector 23 is inserted into the write protect hole 23 of the lower case, and the hole 2
By sliding the light protector 13 by hand or the like through the dowel 31 exposed from the dowel 3, a square hole passing through the upper and lower cases can be made. , it is possible to obtain a control signal for protecting data recorded on a disk-shaped recording medium. As shown in FIG. A recess 25 is formed on the outer periphery of the case, into which a finger can push a knob 27 of the protection member. Further, the upper case 3 is also provided with a recess (not shown) corresponding to the recess 25 of the lower case. The knob 27 exposed from the cassette housing of the protection member does not extend beyond the outermost periphery of the cassette housing, so the knob 27 is intentionally
The protect member 12 is made of a synthetic resin injection molded product, and the spring part 29 is integrally molded, and the shutter regulating part 28 and the knob part 27 are separated from the case housing. As shown, the spring portion 29 contacts the ring-shaped protrusion 37 of the lower case and applies a biasing force to the protection member. The protect member 12 is provided with a rotation shaft hole 26 so as to rotate and slide, and a shaft (not shown) formed in the lower case 2 is inserted into the rotation shaft hole 26. The shutter regulating part 28 protrudes from the outer periphery of the lower case by approximately the thickness of the shutter, and the side surface of the shutter abuts against the regulating part 28 to restrict its movement. Therefore, when the cartridge is not in use, the side surface of the shutter comes into contact with the shutter regulating portion 28, so even if the cassette housing is attempted to be stored in the shutter, it cannot be stored.

Next, when using the cartridge, when the knob 27 of the protect member 120 is pressed with a finger of the hand, the protect member rotates about the rotation shaft hole 26 against the urging force of the spring portion 29, so that the shutter regulating portion 28 is housed in the outer periphery of the lower case, the shutter side surface part 38 and the shutter regulating part 28 can no longer come into contact with each other, and the cassette lit body can be housed in the shutter. The dowel 24 provided on the lower surface of the lower case 2 is the track hole 17 of the shutter.
Since the cassette housing is engaged with the shutter, the cassette housing is not ejected from the shutter by the biasing force of the spring member 10.11. The cutout portions 22 and 36 of the lower case and the cutout portions 52 and 33 of the upper case are provided with the spring member 10. which engages with the shutter.
11 and the seven hook portions 18 and 19 of the shutter are provided as escapes for contact with the case housing. Reference numeral 21 is a lip that is similarly provided on the upper case to reinforce the case housing. The step 34 of the upper case has a step equal to or greater than the thickness of the shutter. When the cassette case is housed in the shutter, the cassette case is restricted by the step 34 and cannot enter the shutter any further.

Next, FIG. 3 is an external perspective view of a cartridge equipped with a shutter provided with the cutout portion 55 shown in FIG. 4, showing a state when the cartridge is not in use. In FIG. 3, the front surface 39 of the cassette housing housed in the shutter 1 vibrates in plan from the notch 35 of the shutter. The planar size of the cartridge mounting device (not shown) of the recording/reproducing device is large enough to mount nine approximately planar cassettes (cassettes), so the cartridge mounting device (not shown) shown in FIG. When the shutter 1 is mounted in the cartridge mounting device, the planar slope shape of the notch 35 of the shutter 1 moves as part of the cartridge pushing force to house the cassette case in the shutter, and the cassette case is housed in the shutter. If the shutter is provided with a notch 35 as shown in Fig. 4, the cassette housing can be manually inserted into the shutter when the cartridge is installed in use. There is no need to store the cartridge, and the head insertion hole 5 can be opened simply by installing the cartridge in the recording/reproducing apparatus.

〔Effect of the invention〕

As described above, according to the present invention, the shutter is formed to have a cylindrical cross section and the cassette housing is housed within the shutter, so that the head insertion hole can be overlapped with the opening of the shutter or the cassette housing can be inserted from inside the shutter. By opening the head, the head insertion hole is covered with a shutter.
The head insertion hole is configured to be open or closed. Therefore, according to the cartridge of the present invention, by closing the head insertion hole with a shutter when the cartridge is not in use, foreign objects such as hands and dust can be prevented from entering the cassette housing through this insertion hole. Therefore, there is no problem in storing the cartridge as it is. Also, this kind of cartridge is generally very thin and made of synthetic resin, and if you try to make the cartridge thinner, its strength will be weaker. Although it is easily deformed, since the shutter is made of a metal plate and has a cylindrical cross-section, and the cassette housing is housed within the shutter, this shutter can fully fulfill its role as a reinforcing member for the cassette housing, making it thin and rigid. We can provide high quality cartridges. In addition, since the cassette housing is housed inside the shutter, the shutter can act as a magnetic shielding member.In addition, the head insertion hole can be easily opened by hand, and side detection can be done on the bottom of the shutter. Since this can be done using the provided positioning bottle insertion hole, it is possible to provide a simple recording/reproducing device that does not require a shutter opening/closing structure and a side detection structure.

[Brief explanation of drawings]

FIG. 1 (α) is an external perspective view showing an embodiment of the car IJ according to the present invention. #! l1ffl(6) is an external perspective view showing a state in which the cartridge of the present invention is used. FIG. 2 is an exploded perspective view of an embodiment of the cartridge of the present invention. FIG. 3 is an external perspective view showing an embodiment of the car IJ according to the present invention. FIG. 4 is a perspective view showing a shutter of an embodiment of the cartridge of the present invention. 1... Shutter 2... Lower case 3... Upper case 4... Disk-shaped recording medium 10.11... Spring member 12. ...Protect member 13...Light protector Fig. 1(b) Fig. 4

Claims (1)

[Claims] A cassette housing comprising an upper and a lower case and having a head insertion hole formed in at least one of these, a disk-shaped recording medium rotatably housed inside the cassette housing, and a head insertion hole formed in at least one of the cassette housings. In a cartridge having a shutter for opening and closing, the shutter is formed to have a cylindrical cross section so that the cassette housing can be housed therein, and the head insertion hole is closed by housing the cassette housing in the shutter. The head insertion hole is covered with the shutter by overlapping the cassette housing with the opening of the shutter or by taking out the cassette housing from within the shutter, thereby opening or closing the head insertion hole. Cartridge.