JPH01227282A - Disk cassette and its assembling method - Google Patents

Abstract

PURPOSE:To set a recording medium in a loading device in a non-contact condition by providing slidably holders to fix and support a disk and providing plate springs to energize their elasticity to the holders. CONSTITUTION:A casing 1 is formed from a lower casing 5 and an upper casing 6. A through hole 5a through which the rotary shaft of the loading device is pierced is formed in the central part of the bottom face of the lower casing 5 and a through hole 5b through which operating pins to release a disk 4 are formed in the four corner parts of the bottom face. Holders 2 support the circum ference part of the disk 4 from the sides and hold the disk 4 out of contact with the internal surface of the casing 1, and operating holes 2b into which the operating pins are inserted from the lower side are provided in the pre scribed positions of their lower faces. The plate springs 3 energize their elastic ity from the base end sides from the holders 2 and fixes and supports the disk 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a disk cassette for fixing and supporting a disk-shaped recording medium (hereinafter referred to as a disk) inside a casing, and a method for assembling the same.

[Conventional technology]

Conventionally, various types of information recording means have been used, such as record discs with grooves formed on the surface to record information, compact discs (CD) and laser discs (LD) with bits formed on the substrate, and information recorded magnetically. Many thin disc-shaped (disc-shaped) disks have been developed and are in use, such as floppy disks (FD), recording/reproducing (DRAW) disks, recording/reproducing/erasing (EDRAW) disks, and the like.

Incidentally, these disks are usually housed in a certain container to prevent dirt and dust from adhering to them and to prevent them from being damaged when they are not normally used. One such container is known, for example, which is constructed so that a disk can be taken out of the container during use. However, with these types of discs, when you remove the disc and use it, you may accidentally hit it against something and damage it, or if you remove the disc and leave it for a long time. This poses a problem as there is a risk that dirt, dust, etc. may accumulate on the recording surface.

Therefore, containers that can be used with the discs stored inside have been proposed and developed. That is, the container is a bag-shaped container, such as one for a floppy disk (FD), in which the disk can be rotatably stored, and a portion of the container can be opened to read information. What has been done is known. However, in containers with this type of structure, the disk is in direct contact with the inner wall surface of the container, so when the disk rotates, it inevitably moves on the inner wall surface of the container, making it impossible to move smoothly. It has become difficult to rotate at high speeds and at high speeds.

Therefore, as shown in FIG. 9, a casing 100, a rotary body 102, etc., which is rotatably attached to a bearing 100a of the casing 100 and fixed to an opening 101a on the center side of a disk 101, are constructed. something is proposed.

[Problem to be solved by the invention]

By the way, in a container with such a configuration, the disk is in a non-contact state with the inner wall surface of the casing.
Although this is advantageous in that respect, the rotating body side is in contact with the bearing portion, and the partial rolling action lacks smoothness. In addition, such containers are usually thicker and heavier, and require relatively high precision in the gap between the rotating body and the casing, resulting in high manufacturing costs. is inviting.

In view of the above-mentioned conventional drawbacks, the present invention makes it possible to insert and set a recording medium into a loading device while fixing and holding it in a non-contact state, and also to make the casing lighter and thinner. The object of the present invention is to provide a disk cassette that does not require a high degree of precision and an easy method for assembling the disk cassette.

[Means to solve the problem]

The disk cassette of the present invention is a disk cassette that supports and fixes a disk inside a casing, in which a holder for fixing and supporting the disk is slidably disposed inside the casing, and an elastic force is applied to the holder. A leaf spring for biasing the holder is disposed on the base end side of the holder.

Further, the method for assembling a disk cassette of the present invention includes the steps of: arranging a holder on the inner sliding portion of the lower casing; and arranging a leaf spring on the pressing portion so as to press the proximal end side of the holder. the process of inserting the operating pin from the outside into the operating hole of the holder from the through hole of the lower casing and forcibly sliding the holder towards the rear, and the process of forcibly sliding the holder towards the rear. The method includes a step of storing the disk in the lower casing side, and a step of covering and fixing the upper casing over the lower casing.

(Function) In the disk cassette of the present invention, the peripheral edge side of the disk is supported from the side by holders that are pressed by a leaf spring and slide toward the disk side, so that the recording surface of the disk is against the inner wall surface of the casing. It is capable of maintaining a non-contact state.

In addition, the method for assembling a disk cassette of the present invention is as follows:
For example, by placing a holder on the sliding part of the lower casing,
Next, a leaf spring is inserted into the pressing part so as to press the holder from the proximal end, and an actuation pin is inserted from the outside into the through hole provided on the holder to resist the elastic force of the leaf spring. Then, slide the holder back toward the proximal end, and in this state, mount the disk on the lower casing side. Next, with this disk mounted, cover the upper casing with the upper casing and cover both of them. When the casing is fixed and the operating pin is finally pulled out, the disk is fixedly supported so that the recording surface is not in contact with the inner wall surfaces of the sealed upper and lower casings.

I will explain it while referring to it.

FIGS. 1 and 2 show a disc cassette according to the present invention, and this disc cassette is composed of a casing 1, a holder 2, and a leaf spring 3.
The casing 1 is used by directly setting the casing 1 on the side of a loading device equipped with an operating pin, which will be described later.

Note that the reference numeral 4 in the figure is a disk, and in this embodiment, E
- A DRAW disc is used.

The casing 1 is formed into a rectangular shape using plastic resin or the like, and the disk 4 is housed inside the casing 1. The casing 1 of this embodiment is composed of a lower casing 5 and an upper casing 6. The lower casing 5 has an insertion hole 5a in the center of the bottom side through which the rotating shaft (circuit) of the loading device is inserted.
Through holes 5b are formed at four corners on the bottom side, through which actuating pins (circuits) for opening the disk 4 pass. Further, the lower casing 5 has a sliding portion and a storage portion formed at the four corners on the inner side of the upper portion, and a mounting portion 5f for mounting the disk 4 at the center portion on the inner side of the upper portion.

The slide portion is composed of a slide a5c provided on the inner wall surface side of the lower casing 5 and slide walls 5d provided on both sides of this slide 7R5c, and the holder 2 is inserted into these slide grooves 5c and slide walls 5d. The disk 4 can slide toward the center side while being guided and regulated.

The storage section is provided on the base end side of the slide section provided in the lower casing 5, and is composed of a substantially T-shaped pressing groove (circuit) and a pressing wall 5e. The upper casing 6 is constructed of a lid-like member fixed to the upper side of the lower casing 5, and thereby the disc 4
is housed inside the casing 1, which is composed of an upper casing 6 and a lower casing 5, and cannot be taken out. However, if the entire casing 1 is set on the loading device side, the The holder 2 is released from the restraint state by the actuating pin and can freely rotate within the casing 1.

The holder 2 supports the peripheral edge side of the disk 4 from the side,
This is to hold the disk 4 in a non-contact state with respect to the inner wall surface of the casing 1, and in this embodiment, it has a substantially ■-shaped groove-like support portion 2a on the tip side, and a predetermined position on the lower surface side. An operating hole 2b is bored in the opening into which the tip end of the tapered operating pin is inserted from below. and,
The relative installation positions of the operating hole 2b on the holder 2 side and the through hole 5b on the lower casing 5 side are required to satisfy a certain relationship as shown below. That is, when the holder 2 is moving forward to the forefront to fixedly support the disk 4, the operating hole 2 on the holder 2 side
b is required to be in a positional relationship with the through hole 5b on the lower casing 5 side such that it is small (and partially overlaps) as shown in FIG.

In addition, in this embodiment, the operating hole 2b and the through hole 5
Although both of b are formed in a perfect circular shape, they are not particularly limited to this shape.

Furthermore, the sliding motion of the holder of the present invention does not necessarily have to be a straight movement in the radial direction of the disk as in this embodiment.

The leaf spring 3 applies an elastic force from the base end side of the holder 2, and fixes the disk 4 by the supporting part of the holder 2 while keeping the holder 2 always sliding forward to the frontmost part of the slide groove 5c. -Support. and,
The leaf spring 3 of this embodiment is formed by curving a substantially rectangular thin plate-like steel plate into an arch shape, and the holder 2 is pressed from the base end side by the curved and protruding central part. It is inserted and disposed within a pressing groove surrounded by a pressing wall 5e.

Therefore, according to the disfucus of this example:
If the entire casing 1 is inserted into the loading device, the holder 2 will slide rearward by inserting the actuating pin into the through hole 5b and the actuating hole 2b without taking the trouble of removing the disk 4 from the casing 1.
As a result, the disk 4 is released from the restrained state.

At this time, the rotation hole 4a on the center side of the disk 4
Since a rotating shaft is inserted into the disc 4, the disk 4 can be freely rotated by the rotational force of the rotating shaft. 'Next, a method of assembling the disfucus cent according to this embodiment will be explained.

1. First, as a first step, as shown in FIG. 4, prepare the lower casing 5, and set the operating hole 2b in the slide portion thereof to correspond to the through hole 5b of the lower casing 5.
That is, the holder 2 is arranged with the operating hole 2b facing downward and the support gB2a facing the disk 4 side.

2. Next, as a second step, as shown in FIG. 4, the leaf spring 3 is inserted in a predetermined direction into the pressing groove surrounded by the pressing wall 5C on the base end side of the holder 2, i.e. The holder 2 is inserted and arranged in such a manner that the protruding portion on the center side presses the holder 2 from the base end side. Note that the holder 2 is slid forward by the leaf spring 3 inserted at this time, as shown in FIG.

3. As a third step, 1. As shown in FIG. .

At this time, as shown in FIG. 7, the holder 2 side is forcibly slid rearward and stopped.

4. Thereafter, as a fourth step, as shown in FIG. 7, the recording medium 4 is loaded and stored in the mounting portion 5f inside the lower casing 5 from the upper side of the opened lower casing 5.

5. Next, as a fifth step, the lower casing 5 is covered with the upper casing 6 from above and both are fixed.

6.Finally, in the sixth step, as shown in FIG. 8, when the operating pin 7 is gently removed, the holder 2 slides forward to its original state, and its lower casing 5 and upper casing 6 are removed.
The disk 4 is fixed and supported by the holder 2 in a chamber formed by the lower casing 5 and the upper casing 6, and the disk 4 is fixed and supported with the recording surface kept in a non-contact state with the inner wall surfaces of the lower casing 5 and the upper casing 6.

In addition, in the method for assembling a disfucus cent of the present invention, the assembly order of the fifth step and the sixth step may be changed.

〔effect〕

As explained above, according to the disc disk cent according to the present invention, when it is not normally used, the peripheral edge side of the disc is fixedly supported from the side by the holder provided in the casing and the leaf spring, and the casing The disk is held in a non-contact state with respect to the inner wall surface, and when this disk is used, the fixation and support state of the disk by the holder is released by an operating pin of a loading device, etc., separately provided on the outside. In other words, in addition to the disk, the casing only includes a holder and a leaf spring, which makes it easy to reduce the weight and thickness of the force setting container, while also achieving a high level of accuracy. do not need.

Furthermore, the disk cassette according to the present invention does not have any rotating shaft like conventional ones, and the disk does not come into contact with anything other than the rotating shaft during rotation. Therefore, the machining accuracy and assembly of parts can be improved. A completely non-contact state can be obtained without requiring a high degree of precision, and as a result, rotational operation can be performed extremely smoothly, and high-speed rotation can be easily achieved.

Furthermore, according to the method for assembling a disk cassette according to the present invention, since the only constituent members are the holder and the leaf spring, excluding the disk, assembly is extremely easy. Insert the spring into the storage area, slide the holder backwards using the external operating pin, and store the disc. Then, use the upper casing to cover the lower casing side, and finally pull the operating pin. The assembly is completed by pulling it out, so it is extremely easy to assemble and can be mass-produced.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view showing a disk cassette according to the invention, FIG. 2 is a plan view showing the disk cassette according to the invention, and FIG. 3 is a state in which the holder and leaf spring of the disk cassette according to the invention are arranged. 4 is a perspective view showing the first step of the disk cassette assembly method according to the present invention, FIG. 5 is a perspective view showing the second step, and FIG. 6 is the same (the third step is shown). 7 is a sectional view showing the fourth step, FIG. 8 is a sectional view showing the sixth step, and FIG. 9 is a sectional view showing a conventional container. 4... ... Disk. 2 ... Holder. 3 ... Leaf spring. 2a ... Support part. 2b ... Operating hole. 5b ... Through hole. 7 ... ...Operating pin. 5..Lower casing. 6..Upper casing. Applicant NEC Home Electronics Co., Ltd. Representative Patent Attorney Masu 1) Takeo 771! ::J2 C1 5 as sword 3 = true 5-=

Claims (1)

[Claims] 1. In a disk cassette for supporting and fixing a disk inside a casing, a holder for fixing and supporting the disk is slidably disposed inside the casing, and an elastic force is applied to the holder. A disc cassette characterized in that a biasing leaf spring is disposed on the base end side of the holder. 2. The disk cassette according to claim 1, further comprising: a slide portion for the holder slide being formed inside the casing; and a storage portion for storing a leaf spring being formed inside the casing on the proximal end side of the slide portion. 3. The disk cassette according to claim 1, wherein a groove-like support portion for fixing and supporting the disk is provided on the front end side of the holder. 4. An operating hole and a through hole are formed in corresponding parts of the holder and the casing, and the holder is slid by an operating pin inserted into the operating hole through the through hole from the outside, and the disk is fixed by the holder. The disk cassette according to claim 1, wherein the disk cassette is configured to be released from the supported state. 5. The disk cassette according to claim 1, wherein the casing comprises an upper casing and a lower casing. 6. A step of disposing a holder on the inner sliding portion of the lower casing; a step of disposing a leaf spring on the pressing portion so as to press the base end side of the holder; and a step of disposing the holder from the through hole of the lower casing. a step of inserting an actuating pin from the outside into the operating hole of the holder and forcibly sliding the holder toward the rear; and a step of storing the disk in the lower casing while the holder is sliding toward the rear. . A method for assembling a disk cassette, comprising the steps of: covering and fixing an upper casing over the lower casing.