JPH08102121A - Structure of cassette holder for disk player - Google Patents

Abstract

PURPOSE: To surely prevent the dropping of a disk cassette from cassette holder at the time of ejecting the disk cassette while making the opening part of the cassette holder to face downward. CONSTITUTION: The cassette holders 10 holding the disk cassette 100 are supported as to be freely movable for opening/closing by a shaft 5a on both sides of a chassis 5 of a mechanical deck part 4 in the disk player. Each click mechanism 20 is provided at both bottom parts 12, 12 of the cassette holder 110. Each of these click mechanisms 20 is constituted of a leaf spring 21 formed by bending the tip side and a restraining body 22 outsert-molded at the tip side of the leaf spring 21 to engage/disengage with/from a recessed part which is formed on the bottom surface of the disk cassette 100. By this arrangement, the disk cassette 100 is surely held in the cassette holder 10 and never dropped, when the disk cassette 100 is ejected while making the opening part A of the cassette holder 10 to face downward.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette holder structure for a disc player which holds or ejects a cartridge-shaped disc cassette containing a small magneto-optical disc having a diameter of 64 mm as a recording medium.

[0002]

2. Description of the Related Art For example, a small disc player is known as a recording and reproducing device using a magneto-optical disc. This will be specifically described with reference to FIG. 14. Reference numeral 1 is a small disc player. Inside the casing type player body 2 of the small disc player 1, a metal plate chassis 5 is provided.
A turntable 6 connected to a spindle motor for rotating a small-sized magneto-optical disk 102 having a diameter of 64 mm as a recording medium; an optical pickup 7 for reproduction;
A mechanical deck section 4 including a magnetic head 8 of a magnetic field modulation overwrite head type for recording is provided. Magneto-optical disk 10 used in this compact disk player 1.
Reference numeral 2 denotes a cassette body cassette body 101 made of a synthetic resin and provided with a dustproof shutter 103 for opening and closing an opening (not shown).
Cartridge-shaped disc cassette 10 housed inside
Configures 0.

A lid 3 is provided on the casing-type player main body 2 so as to be vertically movable. Along with the opening / closing operation of the lid body 3, the cassette holder 10 made of a metal plate for holding the disc cassette 100 is also opened / closed in the vertical direction. When the lid 3 is closed while the disc cassette 100 is held in the cassette holder 10, the magneto-optical disc 102 in the cassette body 101 of the disc cassette 100 is placed on the turntable 6 and the player body 2 By operating a recording button (not shown) provided on the front surface, input information from a microphone or the like can be recorded on the magneto-optical disk 102 via the magnetic head 8 or the like.

Further, when the disc cassette 100 held in the cassette holder 10 is ejected, an open button 2a provided on the front surface of the player main body 2
When the slide operation is performed, the closed lock state of the lid body 3 is released and the lid body 3 is opened. The cassette holder 10 is opened as shown in FIG. 14 in conjunction with the opening operation of the lid 3, and the disc cassette 100 held in the cassette holder 10 can be taken out. .

[0005]

In the conventional small-sized disc player 1 described above, when the lid 3 is opened, the front side of the disc cassette 100 is pushed by an eject spring (not shown) so that the disc holder 100 is kept constant from the opening of the cassette holder 10. Only the stroke amount (the protrusion amount of the disc cassette 100 at the take-out position shown by the solid line in FIG. 14) is equal to the disc cassette 100.
The rear side of the cassette holder 10 is ejected so that it can be easily taken out. However, since the mechanism for holding the disc cassette 100 when the disc cassette 100 is ejected to the eject position is not provided, the opening portion of the cassette holder 10 is not provided. When the disc cassette 100 is ejected with the disk cassette 100 facing downward, due to the acceleration of the disc cassette 100 during ejection and the weight of the disc cassette 100, an unillustrated opening / closing spring for the shutter causes the shutter 10 to move.
3, the disc cassette 100 vigorously drops from the cassette holder 10 as shown by the chain line in FIG. 14, and the impact force of the fall damages the cassette body 101 and the magneto-optical disc 102. There was a risk of being hurt.

Therefore, the present invention provides a cartridge holder structure for a disc player which can surely prevent the disc cassette from dropping from the cassette holder when the disc cassette is ejected.

[0007]

In a cassette holder structure of a disc player, which holds a disc cassette in a cassette holder and rotatably mounts a disc in the disc cassette on a turntable,
The cassette holder is provided with a click mechanism that engages and disengages with the recess provided in the disc cassette.

[0008]

When the disc cassette is ejected from the cassette holder, the click mechanism enters the recess of the disc cassette. As a result, the disc cassette is securely held where it is ejected from the cassette holder by a predetermined amount, and even if the disc cassette is ejected with the opening of the cassette holder facing downward, the disc cassette does not drop from the cassette holder. The disc cassette will not be damaged.

[0009]

Embodiments of the present invention will be described in detail below with reference to the drawings. Incidentally, the small disc player 1 shown in FIG. 14 is incorporated, and the same parts as those of the conventional structure are designated by the same reference numerals and the detailed description thereof will be omitted.

In FIG. 1, reference numeral 4 is a mechanical deck portion used in a small-sized disc player 1 as a recording / reproducing device. Both sides 11, 11 of the cassette holder 10 are supported on both sides of the chassis 5 of the mechanical deck portion 4 so as to be openable and closable in the vertical direction via respective shafts 5a. This cassette holder 10 is formed by bending a metal plate into a generally front-faced shape without a center on the bottom surface side. When the disc cassette 100 is inserted and held, the center hub 102a of the magneto-optical disc 102 in the cassette body 101 is fixed. The turntable 6 is rotatably mounted on the turntable 6. The bottom portions 12 and 1 of the cassette holder 10 are vertically bent inward from the lower edges of the side portions 11 and 11, respectively.
A pair of click mechanisms 20 and 20 are attached between the respective central portions of 2 and the rectangular cutouts 12a.

As shown in FIGS. 3 (a) and 3 (b), each click mechanism 20 includes a metal leaf spring 21 formed by bending the tip end 21a side into a substantially V-shape, and a leaf spring 21. Of the synthetic resin or the like, which is integrally formed by outsert molding on the tip end 21a side of the disk and engages and disengages with the rectangular recesses 104 provided on both sides of the bottom surface of the cassette body 101 of the disk cassette 100. It consists of and. Circular and substantially elliptical mounting holes 21b and 21c are formed on the base side of the leaf spring 21 of each click mechanism 20. Then, as shown in the enlarged view of FIG. 4, the leaf spring 21 of each click mechanism 20 has a circular mounting hole 2
Burring caulking K is performed using 1b, and dowels 12b projecting from the bottoms 12 of the cassette holder 10 are inserted into the substantially oval mounting holes 21c and are positioned and attached to the bottoms 12. As a result, the tip end 21 a of the leaf spring 21 of each click mechanism 20 and the rounded surface 22 a side of the locking body 22 are provided with the cutout holes 12 a of each bottom portion 12.
The inside of the disc cassette 100 is projected to the bottom side of the cassette body 101.

The base of the eject spring 9 shown in FIG. 2 is fixed to the front side of the chassis 5. The end 9a side of the eject spring 9 is bent in a dogleg shape.
Due to the elastic biasing force of the eject spring 9 on the side of the tip 9a, when the lid 3 of the small-sized disc player 1 is opened, the disc held by the cassette holder 10 that opens in conjunction with the opening operation of the lid 3 is held. The front side of the cassette 100 is pushed and the rear side of the disc cassette 100 is ejected from the opening A of the cassette holder 10 by a constant stroke amount (distance S from the solid line to the alternate long and short dash line in FIG. 2) for easy removal. . And cassette holder 10
The position of the pair of concave portions 104, 104 of the cassette body 101 of the disc cassette 100 that slides on the pair of bottom portions 12, 12 toward the opening A side of the disc cassette 100 (the position of the disc cassette 100 in this state is taken out). Position), and the positions of the locking bodies 22, 22 of the pair of click mechanisms 20, 20 match.

The cassette holder 10 is set by setting the bending angle, the material, the thickness, etc. of the leaf springs 21 of the pair of click mechanisms 20, 20 on the tip 21a side to predetermined values (for example, a spring thickness of 0.2 mm). Main body 101 of the disc cassette 100 that slides on the pair of bottom portions 12, 12
The force of the pressing force on the bottom surface of the can be adjusted.

Further, the radius angle of the radius surface 22a of each locking body 22 of the pair of click mechanisms 20 and 20 is such that the pair of recesses 10 of the cassette body 101 of the disc cassette 100.
It is set to a predetermined value by a surmounting force of 4,104 (which becomes a holding force in addition to the amount of force of the leaf spring 21 itself). That is, the rounded surface 22 of the locking body 22 of each click mechanism 20 that is a portion that enters each recess 104 of the cassette body 101.
The angle a on the insertion surface side is a shallow angle (θ), and the angle on the ejection surface side is a deep angle (θ ′) (that is, θ <θ ′). A small pressing force is required when the disc cassette 100 is inserted, and a holding force that exceeds the weight of the disc cassette 100 and the elastic biasing force at the time of ejecting the eject spring 9 is obtained at the time of ejection.

Further, in the figure, 101a is a cassette body 1
01 is an opening formed on the bottom surface side of the opening 01.
01a is opened and closed by the shutter 103. Further, 101b is a center hole formed on the bottom surface side of the cassette body 101.
The center hub 102a of the magneto-optical disk 102 is exposed from b.

According to the cassette holder structure of the compact disc player 1 of the above embodiment, when the disc cassette 100 is inserted through the opening A of the opened cassette holder 10 as shown in FIG. 1, the cassette body of the disc cassette 100 is inserted. Both sides of the bottom of 101 are cassette holders 10.
Sliding on the pair of bottom portions 12, 12. Then, when the cassette body 101 is slid to the inside of the cassette holder 10, as shown in FIG.
When the insertion surface side of the rounded surface 22a of the locking body 22 of 0 contacts the bottom surface of the cassette body 101 while sliding, the tip 21a side of the leaf spring 21 of each click mechanism 20 is elastically deformed downward. When moving to the take-out position indicated by the one-dot chain line in FIG. 2, as shown in FIG. 5B, the insertion surface side of the rounded surface 22a of the locking body 22 of each click mechanism 20 is the cassette body 101 of the disc cassette 100. It goes into each recess 104. Then, when the disc cassette 100 moves further into the cassette holder 10,
The locking body 22 of each click mechanism 20 is the cassette body 101.
The disk cassette 100 is inserted and held up to the insertion completion position shown by the solid line in FIG. At this time, the locking body 22 of each click mechanism 20
The insertion surface side shape of the rounded surface 22a into the concave portion 104 has a shallow angle at the time of insertion. θ ′), the insertion of the disc cassette 100 into the cassette holder 10 can be performed with a small pressing force (force).

Then, when the lid 3 is closed from the state in which the disc cassette 100 is completely inserted and held in the cassette holder 10, the center hub 102a of the magneto-optical disc 102 in the cassette body 101 of the disc cassette 100 is turned. Information input from a microphone or the like is recorded on the magneto-optical disk 102 via the magnetic head 8 or the like by operating a recording button (not shown) on the front surface of the player body 2 which is placed on the table 6. The information recorded in 102 is reproduced via the optical pickup 7 or the like.

When ejecting the disc cassette 100 from the cassette holder 10, the open button 2a on the front surface of the player body 2 is slid. This allows
The closed lock state of the lid body 3 is released and the lid body 3 is opened. Then, in association with the opening operation of the lid body 3, the cassette holder 10 is also opened as shown in FIG. At this time, the front side of the cassette body 101 by the elastic biasing force of the eject spring 9 is more than the pressing force on the bottom side of the cassette body 101 by the elastic force of the leaf spring 21 of the click mechanism 20 attached to each bottom portion 12 of the cassette holder 10. 6A, the disc cassette 100 is ejected from the cassette holder 10 as shown in FIG. 6A.

Then, as shown in FIG. 6B, when the disc cassette 100 reaches the take-out position, the eject surface side of the rounded surface 22a of the locking body 22 of each click mechanism 20 is the main body 101 of the disc cassette 100. Enter each recess 104. In this state, the contact angle (θ ′) between the eject surface of the rounded surface 22a of the locking body 22 and the concave portion 104 is larger than the angle θ at the time of insertion, so that the force of the eject spring 9 and the weight of the disc cassette 100 are reduced. The disk cassette 100 can be held in the cassette holder 10 by the elastic biasing force of the leaf spring 21 against the force. Therefore, when the disc cassette 100 is ejected, even if the opening A of the cassette holder 10 is directed downward (downward), the disc cassette 100 does not fall out of the cassette holder 10 unlike the conventional case, and the disc cassette 100 does not drop. The cassette body 101 is not damaged, and the magneto-optical disk 102 in the cassette body 101 is not damaged.

Next, by pulling out the disc cassette 100 from the state shown in FIG. 6 (b) with a force stronger than that at the time of insertion, as shown in FIG. 6 (c), each click mechanism 2 is clicked.
0 of the locking body 22 corresponds to each recess 10 of the disc cassette 100.
4 which is weaker than the initial pulling force f '(f <f <
By f '), the disc cassette 100 can be taken out from the cassette holder 10 and ejected.

As described above, when the cassette body 101 of the disk cassette 100 is inserted into the cassette holder 10 or ejected, the click mechanisms 20 attached to the bottom portions 12 of the cassette holder 10 are engaged. The stopper 22 is the cassette body 10 of the disc cassette 100.
The engaging body 22 is engaged with and separated from the recesses 104 formed on both sides of the bottom surface of the No. 1 and the bottom of the cassette body 101 that slides on each bottom 12 is locked by the elastic biasing force of the leaf spring 21 of each click mechanism 20. By adding a certain amount of force through the touch panel, it is possible to obtain a modest operational feeling.

7 to 12 show a cassette holder structure used in a small-sized disc player 1 of another embodiment. In the cassette holder structure of the other embodiment, each click mechanism 20 is provided on both sides 1 of the cassette holder 10.
Each notch hole 1 which spreads to each central part of 11
It differs from the cassette holder structure of the above-mentioned embodiment in that it is mounted between the cassette holder 1a and 1a.

Then, when the disc cassette 100 is slid to the take-out position in the cassette holder 10 when the disc cassette 100 is inserted or ejected, it is formed on both side surfaces of the cassette body 101 of the disc cassette 100. By engaging and disengaging the locking body 22 of each click mechanism 20 in the arcuate concave portion 105, the same action and effect as those of the above-described embodiment can be obtained.

According to each of the above-described embodiments, the click mechanism is composed of the leaf spring and the locking body which is a separate member. However, the tip of the leaf spring is bent into a substantially U shape to form the locking body. It may be formed integrally with the leaf spring. Further, as in the click mechanism 20 'of another mode shown in FIG. 13, the rounded surface 22a of the locking body 22 is provided.
Attach the roller 23 to the insertion surface side of the disc cassette 1
You may make it possible to further reduce the force when inserting 00.
Further, although the recording / reproducing apparatus using the magneto-optical disk has been described, it goes without saying that each of the above embodiments can be applied to a reproduction-only machine or another disk player using an optical disk or a magnetic disk.

[0025]

As described above, according to the present invention, the cassette of the disc player is arranged so that the disc cassette is held in the cassette holder and the disc in the disc cassette is rotatably mounted on the turntable. In the holder structure, since the cassette holder is provided with a click mechanism that engages and disengages with the recess provided in the disc cassette, when the disc cassette is ejected from the cassette holder, the click mechanism is provided in the recess of the disc cassette. It is possible to securely hold the disc cassette in the cassette holder at a position where the disc cassette is engaged and the predetermined amount is ejected from the cassette holder. Thus, even when the disc cassette is ejected with the opening of the cassette holder facing downward, the disc cassette can be reliably prevented from falling and the disc cassette is not damaged.

[Brief description of drawings]

FIG. 1 is a perspective view showing a cassette holder structure of a small-sized disc player showing an embodiment of the present invention.

FIG. 2 is a bottom view showing a state where a disc cassette is inserted in the cassette holder having the cassette holder structure.

3A is a plan view showing a click mechanism used in the cassette holder structure, and FIG. 3B is a side view of the click mechanism.

FIG. 4 is a partial enlarged bottom view showing a state in which the click mechanism is attached to the bottom of the cassette holder.

5A is an explanatory view of a click mechanism during insertion of a disc cassette into the cassette holder, and FIG. 5B is an explanatory view showing a state in which the click mechanism engages with a recess of the disc cassette.

FIG. 6A is an explanatory view of a click mechanism in the middle of ejecting the disc cassette from the cassette holder,
(B) is an explanatory view showing a state in which the click mechanism engages with a concave portion of the disc cassette, and (c) is an explanatory diagram showing a state in which the disc cassette is further ejected from the cassette holder.

FIG. 7 is a bottom view of the cassette holder structure of the small-sized disc player according to another embodiment.

FIG. 8 is a side view of the cassette holder structure.

FIG. 9 is a bottom view showing the state of the cassette take-out position of the cassette holder structure.

FIG. 10 is a side view showing a state of the cassette take-out position of the cassette holder structure.

FIG. 11 is an enlarged plan view around the click mechanism at the cassette take-out position.

FIG. 12 is an enlarged side view of the periphery of the click mechanism at the cassette take-out position.

FIG. 13 is an explanatory view showing a click mechanism of another aspect.

FIG. 14 is a side view when the disc cassette is ejected from the cassette holder of the disc player.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Disc player 6 ... Turntable 10 ... Cassette holder 11 ... Side 12 ... Bottom 20 ... Click mechanism 21 ... Leaf spring 22 ... Locking body 100 ... Disc cassette 102 ... Discs 104, 105 ... Recess

Claims (3)

[Claims] 1. A cassette holder structure for a disc player, wherein the disc cassette is held in a cassette holder and the disc in the disc cassette is rotatably mounted on a turntable. A cassette holder structure for a disc player, which is provided with a click mechanism that engages and disengages with a recess provided in the cassette. 2. The cassette holder structure for a disc player according to claim 1, wherein a pair of click mechanisms is provided on both sides of the bottom of the cassette holder, and each click mechanism is provided with a leaf spring whose front end is bent and formed. A cassette holder structure for a disc player, characterized in that it comprises a locking body which is provided on the tip side of a spring and which engages with and separates from the recess of the disc cassette. 3. A cassette holder structure for a disc player according to claim 1, wherein a pair of click mechanisms is provided on both sides of the cassette holder, and each click mechanism has a leaf spring whose front end is bent and formed. A cassette holder structure for a disc player, characterized in that it comprises a locking body which is provided on the tip side of a spring and which engages with and separates from the recess of the disc cassette.