JPH08249787A - Disc player ground structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a ground structure for a disc player in which a cassette holder for holding a disc cassette is surely grounded. [Structure] A metal chassis 3 is arranged in a casing-type player main body 2. A pair of left and right metal support arms 9 and 9 are provided on both side wall portions 3a and 3a of the chassis 3 via respective support shafts 8 so as to be vertically swingable. This pair of support arms 9,
An upper panel 10 made of metal is attached to 9 and is provided so as to be openable and closable with respect to the upper opening 2a of the player main body 2. Further, a metal cassette holder 14 for holding the disk cassette 20 via a pair of support arms 9, 9 is provided so as to be vertically swingable about a support shaft 13 in association with the opening / closing movement of the upper panel 10. A metal leaf spring 16 as a conductive member is caulked and fixed to the support arm 9 on the right side. When the upper panel 10 is closed, the tip end 16e of the leaf spring 16 contacts the upper portion 14a of the cassette holder 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground structure for a disc player for reproducing a small-diameter magnetic disc or a magneto-optical disc contained in a disc cassette.

[0002]

2. Description of the Related Art For example, there is known a small-sized disc player for reproduction which uses a magneto-optical disc having a diameter of 64 mm. In this small disc player, a metal chassis is arranged in a casing-type player body having an open top surface, and a pair of left and right fulcrum plates (support arms) made of metal are vertically arranged on both sides of the chassis. It is provided so that it can swing freely. Further, a metallic lid is attached to the pair of fulcrum plates, and the lid is provided so as to be openable and closable with respect to the opening of the upper surface of the player body, and is interlocked with the opening and closing movement of the lid. A metal cassette holder for holding the disk cassette is provided via the pair of fulcrum plates so as to be openable and closable. The magneto-optical disk is stored in this disk cassette.

When the lid is closed while holding the disc cassette in the cassette holder, the magneto-optical disc in the disc cassette is rotatably mounted on a turntable provided on the chassis via a motor or the like. , Information on the magneto-optical disk is read by an optical pickup and reproduced.

[0004]

However, in the above-mentioned conventional small-sized disc player, when the magneto-optical disc is mounted on the turntable, the cassette holder makes electrical contact with other parts such as a pair of fulcrum plates and a chassis. Since it has a structure that does not have at all, there is a drawback that the ground of the cassette holder can not be surely taken, and for example, it will be in an electrically unstable state against the entry of static electricity from the outside and malfunctions etc. There was a risk of causing this.

Therefore, the present invention provides a grounding structure for a disc player in which a cassette holder for holding a disc cassette can be surely grounded.

[0006]

[MEANS FOR SOLVING THE PROBLEMS] A chassis made of metal is arranged in a casing-type player main body having an opening on the upper surface side, and a pair of support arms made of metal is provided on both sides of the chassis so as to be vertically swingable. , A metal lid is attached to the pair of support arms, the lid is provided so as to be openable and closable with respect to the upper opening of the player main body, and the pair of support is interlocked with the opening and closing movement of the lid. A ground structure for a disc player in which a metal cassette holder for holding a disc cassette via an arm is openably and closably provided, and a conductive member is interposed between at least one of the support arms and the cassette holder. There is.

[0007]

The static electricity or static electricity charged on the cassette holder side flows from the support arm to the lid through the conductive member and is removed. In addition, static electricity that jumps into the cassette holder from the outside flows through the conductive member from the support arm to the lid, and is removed, and the cassette holder is always in an electrically stable state, so there is no factor that causes malfunctions. .

[0008]

Embodiments of the present invention will be described in detail below with reference to the drawings.

In FIG. 1, reference numeral 1 is a reproduction-only small-sized disc player, which reads information from a magneto-optical disc 21 having a diameter of, for example, 64 mm stored in a disc cassette 20, and reproduces it by an optical pickup 7 which will be described later. . The player body 2 made of metal of the small-sized disc player 1 is of a casing type whose upper surface side is open, and the chassis 3 made of metal is arranged in the player body 2 of the casing type. A turntable 4 for rotating the magneto-optical disk 21 is attached to the chassis 3 substantially at the center through a spindle motor or the like (not shown), and between the left and right side wall portions (both side portions) 3a, 3a of the chassis 3. An optical pickup 7 is reciprocally movable in the radial direction of the magneto-optical disk 21 via a guide shaft 5, a feed screw 6, and the like.

A pair of left and right metal support arms 9 and 9 are supported on the rear end portions of both side walls 3a and 3a of the chassis 3 so as to be vertically swingable via respective support shafts 8. is there. Each of the supporting arms 9 has a vertical piece 9a and a horizontal piece 9b which is bent vertically from the upper edge of the vertical piece 9a.
It is formed in a letter shape and functions as a fulcrum plate. Further, between the pair of support arms 9 and 9 is attached so as to cover an upper panel (lid) 10 made of metal and having a lower surface opened. That is, as shown in FIGS. 1 and 2, a screw hole 9c is formed in a portion of the vertical end portion 9a of each support arm 9 that is vertically bent toward the horizontal end portion 9b side of the base end portion. The upper panel 10 is attached to the pair of support arms 9 and 9 via the metal screws 12 and the like screwed into the holes 9c.
Are fastened and fixed. The upper panel 10 is provided so as to be openable and closable with respect to the upper opening 2a of the player body 2 by swinging the pair of support arms 9, 9 in the vertical direction.

Further, a metal cassette holder 14 for holding the disc cassette 20 is swingably supported in the vertical direction on the rear wall portion 3b of the chassis 3 via a spindle 13. Interlocks with the opening operation of the upper panel 10 so as to be lifted upward from the center of the lower edge of each vertical piece 9a of the pair of support arms 9 and 9 via each bent piece 9d bent inward. Has become.

When the upper panel 10 is closed, the metal plate spring 11 fixed to the upper panel 10 directly presses and fixes the disc cassette 20 from a hole (not shown) of the cassette holder 14. There is.
Further, when the upper panel 10 is closed, the metal hook-shaped lock plate 15 interlocking with the open / close button 2b provided on the front surface of the player body 2 is locked to the metal claw portion 10b of the upper panel 10. It is supposed to be locked. In the closed state of the upper panel 10, the cassette holder 14 has no electrical contact with each support arm 9 and other parts such as the upper panel 10, so that, for example, the one support arm 9 on the right side and the cassette holder A leaf spring (conductive member) 16 made of metal is interposed between the upper portions 14 a of the elements 14. As shown in FIGS. 3 (a) and 3 (b), the leaf spring 16 has a vertical piece 16a and a horizontal piece 16b bent from a part of the vertical piece 16a, and has a substantially U shape in plan view. . A pair of holes 16c and 16d are formed in the vertical piece 16a of the leaf spring 16.
And the leaf spring 16 has holes 16c and 16d.
It is caulked and fixed to the rear side of the vertical piece 9a of the supporting ground 9 on the right side. As a result, when the top panel 10 is closed, the tip end (one end) of the horizontal piece 16b of the leaf spring 16 is closed.
16e contacts the upper part 14a of the cassette holder 14.

According to the small-sized disc player 1 of the above embodiment, the cassette holder is lifted upward through the bent pieces 9d of the pair of support arms 9 and 9 with the upper panel 10 opened. Disc cassette 2 in 14
Insert and hold 0. When the upper panel 10 is opened, the tip 16e of the horizontal piece 16b of the leaf spring 16 as a conductive member, which is caulked and fixed to the right support arm 9, is slightly apart from the upper portion 14a of the cassette holder 14.

Then, when the upper panel 10 is closed with the disc cassette 20 inserted and held in the cassette holder 14 and the closed state of the upper panel 10 is locked via the lock plate 15, as shown in FIG. Right support arm 9
The tip 16e of the horizontal piece 16b of the leaf spring 16 fixed by caulking is in contact with the upper portion 14a of the cassette holder 14. As a result, static electricity generated by the rotation of the magneto-optical disk 21 in the disk cassette 20 is transferred from the cassette holder 14 to the leaf spring 16 → the supporting arm 9 → the screw 12 →
It flows from the upper panel 10 or the cassette holder 14 to the leaf spring 16 → support arm 9 → screw 12 → upper panel 10 → lock plate 15 → player main body 2 and is removed. In addition, static electricity that has jumped from the outside to the cassette holder 14 side also flows and is removed from the support arm 9 and the like to the upper panel 10 side via the leaf spring 16.

As described above, in order to securely mount the magneto-optical disk 21 on the turntable 4 when the upper panel 10 is closed, electrical contact is made with the support arm 9 and other parts such as the upper panel 10. Since the cassette holder 14 that does not have any electric contact is electrically contacted with other parts such as the support arm 9 and the upper panel 10 through the leaf spring 16, the static electricity that tends to be charged to the cassette holder 14 is surely secured. Can be removed. As a result, the cassette holder 14 can be kept in an electrically stable state at all times, and it is possible to reliably eliminate factors that cause malfunctions of the drive system of the turntable 4 and the optical pickup 7 due to static electricity.

FIG. 4 shows an enlarged side view of a ground structure portion of another embodiment. In the earth structure of the above-mentioned embodiment, the tip 16 of the horizontal piece 16b of the leaf spring 16 as a conductive member is provided.
Although the structure in which the e is brought into contact with the upper portion 14a of the cassette holder 14 is used, in the other embodiment, the tip end 16e of the horizontal piece 16b of the leaf spring 16 'as a conductive member is brought into contact with the upper portion 14a of the cassette holder 14. In addition, the base end portion (the other end portion) 16f of the horizontal piece portion 16b is attached to the upper panel 10.
Is further contacted with the back side of. As a result, static electricity can be reliably removed as in the above-described embodiment.

In addition, according to each of the above-mentioned embodiments, the earth structure of the small-sized disc player for reproduction is explained.
Of course, it can be applied to the ground structure of a small-sized disc player for reproduction and recording. Further, the disc is not limited to the magneto-optical disc, but may be another disc such as a magnetic disc or an optical disc. Further, although the metal leaf spring is used as the conductive member, it goes without saying that another conductive member such as conductive rubber may be used. Furthermore, conductive members may be respectively interposed between the left and right support arms and the cassette holder.

[0018]

As described above, according to the present invention, the metal chassis is arranged in the casing type player main body whose upper surface is opened, and the pair of metal support arms are vertically arranged on both sides of the chassis. And a metal lid is attached to the pair of support arms so that the lid can be opened and closed with respect to the upper opening of the player body, and the lid can be opened and closed. A ground structure for a disc player, in which a metal cassette holder for holding a disc cassette in an interlocking manner via the pair of support arms is provided so as to be openable and closable, and between at least one of the support arms and the cassette holder. By interposing a conductive member in the above, it is possible to reliably remove static electricity that tends to charge the cassette holder by flowing it from the support arm to the lid side through the conductive member. That. As a result, the cassette holder can be kept in an electrically stable state at all times, and factors causing malfunctions and the like can be eliminated.

[Brief description of drawings]

FIG. 1 is a right side surface of a main part of a disc player showing an embodiment of the present invention.

FIG. 2 is an enlarged right side view of a ground structure portion of the disc player.

FIG. 3A is a right side view of a conductive leaf spring used in the earth structure, and FIG. 3B is a plan view of the leaf spring.

FIG. 4 is an enlarged side view of a ground structure portion of another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Disc player 2 ... Player main body 2a ... Top opening 3 ... Chassis 3a, 3a ... Left and right side wall portions (both sides) 9, 9 ... A pair of support arms 10 ... Upper panel (lid) 14 ... Cassette holder 16, 16 '... leaf spring (conductive member) 16e ... front end (one end) 16f ... base end (other end) 20 ... disk cassette

Claims (3)

[Claims] 1. A metal chassis is arranged in a casing-type player main body having an open top surface, and a pair of metal support arms are provided on both sides of the chassis so as to be vertically swingable. A metal lid is attached to the support arm, and the lid is provided so as to be openable and closable with respect to the upper opening of the player main body, and is interlocked with the opening and closing movement of the lid via the pair of support arms. A ground structure for a disc player in which a metal cassette holder for holding a disc cassette is provided so as to be openable and closable, and a conductive member is interposed between at least one of the support arms and the cassette holder. The ground structure of the disc player. 2. The ground structure for a disk player according to claim 1, wherein a metal plate spring is used as the conductive member, and the plate spring is caulked and fixed to at least one of the support grounds and one end of the plate spring is used. A ground structure for a disc player, characterized in that a portion is brought into contact with the cassette holder. 3. The ground structure for a disc player according to claim 2, wherein the other end of the leaf spring is brought into contact with the lid body.