JP2008097762A - Disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the occurrence of collision sound during unloading without increasing the number of components. <P>SOLUTION: In this disk device in which a disk D is transferred from a turntable 9 onto a tray 4 by lowering (d) a lever shift 5B on the basis of an unloading signal to make a traverse chassis 5A be in an inclination attitude, and the tray 4 is made to advance (a), a plurality of trapezoidal mounting tables 2 that swell upward are formed by applying sheet metal working to the bottom chassis 1a of a housing 1, a loader chassis 3 is fixed onto the respective mounting tables 2, a bar-shaped elastic cushioning material 20 is projected integrally with the lever shift 5B oppositely to one of the mounting tables 2, and when the lever shift 5B is lowered down (d) to the lower limit position, the elastic cushioning material 20 is brought into contact with the top face or the inclining side face of the mounting table 2 to be elastically displaced. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a disk device (for example, a DVD recorder, a DVD player, etc.), and in particular, reliably prevents occurrence of a collision sound during unloading without increasing the number of parts.

5 to 7 show an example of a conventional disk device. FIG. 5 is a longitudinal sectional view of the disk device, FIG. 6 is an exploded perspective view of the main part, and FIG. An enlarged vertical cross-sectional view of the main part, FIG. 7B is a CC arrow view.

As shown in FIGS. 5 and 6, a casing 1 having a bottom chassis 1a, a front panel 1b, a top chassis 1c, and a rear cover 1d is provided, and bulges upward by applying sheet metal processing to the bottom chassis 1a. A plurality (four in this example) of trapezoidal mounting tables 2 are formed, and a loader chassis 3 is fixed on each mounting table 2, and a disk D mounting tray 4 is moved forward and backward in the loader chassis 3. b. A traverse member 5 comprising a traverse chassis 5A and a synthetic resin lever shift 5B is supported. The optical pickup 7 is movably engaged with a guide rod 6 fixed to the traverse chassis 5A. A spindle motor 8 is arranged at the front of the traverse chassis 5A, and a turntable 9 is fixed to the drive shaft of the spindle motor 8. Is spanned the cross beam 10 between the opposite side walls of the main chassis 3 opposite to the turntable 9, the clamper 1 centrally formed storages in 10a of transverse girder 10
1 is arrange | positioned so that raising / lowering within a fixed range is possible.

The rear part of the traverse chassis 5A is connected to the loader chassis 3 via a rear elastic body 13A made of rubber so that it can move up and down, and the front elastic body 13B made of rubber is made of the front part of the traverse chassis 5A. And is connected to the lever shift 5B.
A cam slider 14 is arranged on the loader chassis 3 so as to be movable in the left and right directions e and f so as to face B. A cam groove 15A formed in the cam slider 14 is fitted into the cam groove 15A and protrudes into the front surface of the lever shift 5B. The cam slider 14 is connected to the lever shift 5B by a cam mechanism 15 including a cam pin 15B provided. In FIG. 6, reference numeral 16 denotes a rack integrally projecting from the cam slider 14, and a drive pinion (not shown) is engaged therewith.

The operation principle will be described. The solid line in FIG. 5 shows the play mode. The cam slider 14 is slid in one direction e by rotating the drive pinion meshing with the rack 16 based on the loading signal, and the cam mechanism 15 is moved. By moving the lever shift 5B upwardly to bring the traverse chassis 5A into a horizontal posture, the disk D on the tray 4 is lifted by the turntable 9, and the disk D is clamped by the turntable 9 and the clamper 11, The spindle motor 8 is driven to rotate the disk D at high speed by the turntable 9, and the information recorded on the disk D is read by the optical pickup 7 to reproduce and record video information.

When an unloading signal is input in the play mode, the driving of the spindle motor 8 is stopped, the driving pinion that meshes with the rack 16 is reversed, and the cam slider 14 is slid in the other direction f, via the cam mechanism 15. By moving the lever shift 5B downward d to bring the traverse chassis 5A into an inclined posture (see the phantom line in FIG. 5), the disk D is transferred from the turntable 9 onto the tray 4, and the tray 4 is moved forward a. 4 Remove the disk D from the top or place a new disk D on the tray 4 based on the eject signal.
B. In addition, there exists what was described in patent document 1 as a related technique.
Japanese Patent Laid-Open No. 2003-281876

In the above conventional configuration, the height of the housing 1 is set as small as possible according to the user's request. Therefore, the lever shift 5B is moved down to the lower limit position as shown by the phantom line in FIG. When the lever shift 5B is very close to the bottom chassis 1a, the lever shift 5B may be lowered too much and collide with the bottom chassis 1a due to aging or dimensional error. Noise is generated.

Therefore, as shown in FIGS. 7A and 7B, a buffer sheet 17 made of a nonwoven fabric or the like is pasted on the bottom chassis 1a so as to face the lever shift 5B, and the lever shift 5B is lowered too much on the buffer sheet 17. Although it is considered that sound is absorbed by colliding the lower surface 5a of this, this increases the number of parts by the amount of use of the buffer sheet 17 and increases the cost.

An object of the present invention is to provide a disk device that reliably prevents the occurrence of a collision sound during unloading without increasing the number of components.

In order to achieve the above object, according to the first aspect of the present invention, a loader chassis is fixed on a bottom chassis of a housing, and a disk mounting tray is supported on the loader chassis so as to be able to move forward and backward. A traverse member comprising a traverse chassis on which a turntable is mounted and a synthetic resin lever shift; and a rear portion of the traverse chassis is connected to the loader chassis via a rear elastic body so as to be movable up and down. A front portion of the chassis is connected to the lever shift via a front elastic body, and a cam slider connected to the lever shift via a cam mechanism is slidably disposed on the loader chassis. Slide in one direction and move the lever shift upward via the cam mechanism. The disk chassis is placed in a horizontal position to lift the disk on the tray with the turntable, rotate the disk at a high speed with the turntable, read the information recorded on the disk with an optical pickup, and read the cam slider based on the unloading signal. In the disk device in which the disk is transferred from the turntable onto the tray by moving the lever in the other direction and moving the lever shift downward via the cam mechanism so that the traverse chassis is tilted, and the tray is advanced. A plurality of trapezoidal mounting tables that bulge upward are formed by performing sheet metal processing on the bottom chassis, and the loader chassis is fixed on each mounting table, and any one of the mounting tables Opposite rod elastic cushioning material projects into the lever shift Are, when moved downward to the lever shift to the lower limit position, and characterized in that the in contact with the upper surface or the inclined side surface of the elastic buffer member mounting table was set to be elastically displaced.

The invention according to claim 2 is a traverse member in which a loader chassis is fixed on a bottom chassis of a casing, a disk mounting tray is supported on the loader chassis so as to be able to move forward and backward, and an optical pickup and a turntable are mounted. A rear part is connected to the loader chassis so as to be movable up and down, and a cam slider connected to a front part of the traverse member via a cam mechanism is slidably arranged on the loader chassis. The disc is slid in the direction and the traverse member is moved upward through the cam mechanism to a horizontal posture. The disc on the tray is lifted by the turntable, and the disc is rotated at a high speed by the turntable. Information is read by an optical pickup and an unloading signal In the disk device in which the cam slider is slid in the other direction and the traverse member is moved downward through the cam mechanism to be inclined to deliver the disk from the turntable onto the tray and advance the tray. The front portion of the traverse member is molded of synthetic resin, and an elastic buffer member is integrally projected on the front portion. When the traverse member is moved down to the lower limit position, the elastic buffer material is moved to the bottom chassis. It is characterized by being in contact.

According to a third aspect of the present invention, in the invention of the second aspect, a plurality of trapezoidal mounting tables that bulge upward are formed by performing sheet metal processing on the bottom chassis, When the loader chassis is fixed and the elastic cushioning material is disposed to face any one of the mounting tables, the elastic buffering material is placed when the traverse member is moved down to the lower limit position. It is characterized in that it is elastically displaced by being brought into contact with the upper surface or the inclined side surface.

The invention according to claim 4 is the invention according to claim 3, wherein the traverse member has a traverse chassis on which an optical pickup and a turntable are mounted and a synthetic resin lever shift, and a rear portion of the traverse chassis is It is connected to the loader chassis via a rear elastic body so as to be movable up and down, and a front portion of the traverse chassis is connected to the lever shift via a front elastic body, and connected to the lever shift via a cam mechanism. The cam slider is slidably disposed on the loader chassis, and the rod-shaped elastic cushioning material is integrally projected on the lever shift, and when the lever shift is moved down to the lower limit position, the elastic cushioning material is It is characterized in that it is elastically displaced by contacting the upper surface or inclined side surface of the mounting table.

According to the first aspect of the present invention, when the lever shift is moved down to the lower limit position based on the unloading signal, the rod-like elastic cushioning material integrally projecting on the lever shift is provided on the upper surface or the inclination of the mounting table. The lower side of the lever shift is suddenly braked by bending or twisting the elastic cushioning material by bringing it into contact with the substantially arcuate corner between the curved side surface or the upper surface and the inclined side surface. As a result, even when the lever shift is lowered too much due to aging or dimensional error, the lever shift 5B is prevented from colliding with the bottom chassis, and unpleasant collision noise is reliably prevented. Can do.

In addition, since the elastic cushioning material is provided integrally with the lever shift, the number of parts does not increase, and the cost can be greatly reduced as compared with the case where a conventional cushioning sheet is used.

Furthermore, a plurality of trapezoidal mounting bases that bulge upward are formed by performing sheet metal processing on the bottom chassis, and a loader chassis is fixed on each mounting base, and one of the mounting bases is elastic. It is designed to prevent the occurrence of unpleasant collision noise by contacting the cushioning material, and the structure is simplified as much as the single mounting table is also used, making it suitable for effective use of the narrow space in the housing. Yes.

According to the second aspect of the present invention, when the traverse member is moved down to the lower limit position based on the unloading signal, the elastic cushioning material is brought into contact with the bottom chassis. Even when the front part of the traverse member is lowered too much, it is possible to prevent the front part of the traverse member from colliding with the bottom chassis and to reliably prevent generation of an unpleasant collision sound. In addition, since the elastic cushioning material is integrally projected at the front portion of the traverse member, the number of parts does not increase, and the cost can be greatly reduced as compared with the case where a conventional cushioning sheet is used.

According to the invention described in claim 3, a plurality of trapezoidal mounting tables that bulge upward are formed by performing sheet metal processing on the bottom chassis, and the loader chassis is fixed on each mounting table. An elastic cushioning material is brought into contact with one of the mounting tables to prevent the generation of unpleasant collision noise, and the structure is simplified by the amount of the single mounting table. Suitable for effective use in narrow spaces.

According to the fourth aspect of the present invention, when the lever shift is moved down to the lower limit position, the bar-shaped elastic cushioning material integrally projecting the lever shift is placed on the upper surface of the mounting table, the inclined side surface, or the upper surface thereof. By making contact with the substantially arc-shaped corner between the inclined side surface and bending or twisting the elastic cushioning material, suddenly brake the downward movement of the lever shift and generate unpleasant collision noise. Can be more reliably prevented.

1 to 4 show an embodiment of the present invention. FIG. 1 is a longitudinal sectional view of a disk device, FIG. 2 is an exploded perspective view of the main part, and FIG. Enlarged longitudinal sectional view, FIG. 3 (b) is AA
4A is an enlarged longitudinal sectional view of the main part showing the modification, and FIG. 4B is a BB perspective view.

As shown in FIGS. 1 to 3, guide frames 19 are integrally protruded at both end portions of a lever shift (front portion of the traverse member) 5 </ b> B, and the guide frames 19 provided in the loader chassis 3 extend in the vertical direction. By engaging with a piece (not shown), the lever shift 5B is formed so as to be able to move up and down c and d, and an elastic cushioning material 20 is integrally projected on the front surface of one guide frame 19, and the elastic cushioning is provided. The material 20 is formed in a rod shape and is opposed to the upper surface 2a of the front mounting table 2. In FIG. 2, reference numeral 21 denotes a plurality (four in this embodiment) integrally projecting from the loader chassis 3.
This positioning pin is inserted into the positioning hole 22 of each mounting table 2. Reference numeral 23 denotes a screw that passes through the loader chassis 3 and is screwed into the screw hole 24 of each mounting table 2 to fix the loader chassis 3 to the bottom chassis 1a. Since the configuration other than the above is substantially the same as the configuration shown in FIGS. 5 to 7, the same parts are denoted by the same reference numerals and the description thereof is omitted.

Explaining the principle of operation, when an unloading signal is input in the play mode indicated by the solid line in FIG. 1, the lever shift 5B is moved downward by the same procedure as in the prior art to traverse the chassis 5A.
Is inclined (see the phantom line in FIG. 1), the elastic cushioning material 20 is shown in FIGS. 3 (a) and 3 (b).
Is brought into contact with the upper surface 2a of the mounting table 2, and the elastic cushioning material 20 is pressed against the substantially arcuate corner 2c between the upper surface 2a of the mounting table 2 and the inclined side surface 2b to be bent. The brake is suddenly applied so that the lower surface 5a of the lever shift is not in contact with the bottom chassis 1a.

In the above configuration, the elastic cushioning material 20 is opposed to the upper surface 2a of the mounting table 2. However, the present invention is not limited to this, and the elastic cushioning material 20 is placed as shown in FIGS. 4 (a) and 4 (b). You may make it oppose the substantially circular arc-shaped corner | angular part 2c or the inclined side surface 2b of the mounting base 2, and, thereby, the elastic buffer material 2
The lever shift 5B can be suddenly braked by pressing and bending 0 on the mounting table 2 against the substantially arcuate corner 2c or the inclined side surface 2b.

According to the above configuration, when the lever shift 5B is moved down d to the lower limit position based on the unloading signal (see the phantom line in FIG. 1), the rod-shaped elastic cushioning material 20 that protrudes integrally with the lever shift 5B is provided. The upper surface 2a and the inclined side surface 2b of the mounting table 2 or the upper surface 2a and the inclined side surface 2b
The elastic shock absorbing material 20 can be bent or twisted by bringing it into contact with the substantially arcuate corner 2c between and the lever shift 5B, so that the downward movement d of the lever shift 5B can be suddenly braked. Even when the lever shift 5B is lowered too much due to aging, dimensional error, etc., it is possible to prevent the lever shift 5B from colliding with the bottom chassis 1a and to reliably prevent generation of unpleasant collision sound.

Further, since the elastic cushioning material 20 is integrally projected on the lever shift 5B, the number of parts does not increase, and the cost can be greatly reduced as compared with the case where the conventional cushioning sheet 17 (see FIG. 7) is used. Can do.

Further, a plurality of trapezoidal mounting tables 2 bulging upward are formed by subjecting the bottom chassis 1 a to sheet metal processing, and a loader chassis 3 is fixed on each mounting table 2.
The elastic cushioning material 20 is brought into contact with one of them to prevent the generation of unpleasant collision noise, and the structure is simplified by the amount of the single mounting table 2 that is also used. It is suitable for effective use of a narrow space within 1.

In the above embodiment, the split-type traverse member 5 divided into the traverse chassis 5A and the lever shift 5B has been described as an example. However, the present invention is not limited to this, and the rear portion is interposed via the rear elastic body 13A. Thus, the present invention is also applicable to the case where the integrated traverse member 5 is connected to the loader chassis 3 so as to be movable in the vertical direction c and d and the front part is connected to the cam slider 14 via the cam mechanism 15.

1 is a longitudinal sectional view showing a disk device according to an embodiment of the present invention. It is a disassembled perspective view of the principal part. (A) is an expanded longitudinal cross-sectional view of the principal part, (b) is an AA perspective view. (A) is an enlarged vertical sectional view of the principal part showing the modification, and (b) is a BB perspective view. It is a longitudinal cross-sectional view which shows a prior art example. It is a disassembled perspective view of the principal part. (A) is an expanded vertical sectional view of the principal part showing a conventional improvement example, (b) is a CC arrow view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing | casing 1a Bottom chassis 2 Housing | casing table 3 Loader chassis 4 Tray 5 Traverse member 5A Traverse chassis 5B Lever shaft (front part of traverse member)
7 Optical pickup 9 Turntable 13A Rear elastic body 13B Front elastic body 14 Cam slider 15 Cam mechanism 20 Elastic shock absorber D Disk

Claims (4)

A loader chassis is fixed on the bottom chassis of the housing, and a disk mounting tray is supported on the loader chassis so as to be able to move forward and backward, and includes a traverse chassis equipped with an optical pickup and a turntable, and a synthetic resin lever shift. A traverse member, and a rear part of the traverse chassis is connected to the loader chassis via a rear elastic body so as to be movable up and down, and a front part of the traverse chassis is connected to the lever shift via a front elastic body A cam slider coupled to the lever shift via a cam mechanism is slidably disposed on the loader chassis. The cam slider is slid in one direction based on a loading signal, and the lever shift is moved upward via the cam mechanism. Let the traverse chassis into a horizontal position The disc is lifted by a turntable, the disc is rotated at a high speed by the turntable, the information recorded on the disc is read by an optical pickup, the cam slider is slid in the other direction based on the unloading signal, and the cam mechanism is used. By moving the lever shift downward to bring the traverse chassis into an inclined posture, the disk is transferred from the turntable onto the tray, and the tray is moved forward. A plurality of trapezoidal mounting tables that bulge upward are formed, and the loader chassis is fixed on each mounting table, and a rod-shaped elastic cushioning material is opposed to any one of the mounting tables, and the lever It is integrally projected on the shift, and the lever shift is moved down to the lower limit position. When the disk device, characterized in that said in contact with the upper surface or the inclined side surface of the elastic buffer member mounting table was set to be elastically displaced. A loader chassis is fixed on the bottom chassis of the housing, and a disk mounting tray is supported on the loader chassis so as to be able to move forward and backward. A rear part of a traverse member mounted with an optical pickup and a turntable moves up and down on the loader chassis. A cam slider connected to the front portion of the traverse member via a cam mechanism is slidably disposed on the loader chassis, and the cam slider is slid in one direction based on a loading signal, The traverse member is moved up to a horizontal position, whereby the disc on the tray is lifted by the turntable, the disc is rotated at a high speed by the turntable, and the information recorded on the disc is read by the optical pickup, and unloaded. The cam slider based on the loading signal In the disk device in which the disk is transferred from the turntable onto the tray by moving the traverse member downward through the cam mechanism to an inclined posture, the tray is moved forward. The front part is formed of synthetic resin, and an elastic buffer member is integrally projected on the front part. When the traverse member is moved down to the lower limit position, the elastic buffer member is brought into contact with the bottom chassis. A disk device characterized by the above. A plurality of trapezoidal mounting bases that bulge upward are formed by performing sheet metal processing on the bottom chassis, and the loader chassis is fixed on each mounting base and faces any one of the mounting bases. The elastic cushioning material is disposed, and when the traverse member is moved down to the lower limit position, the elastic cushioning material is elastically displaced by contacting the upper surface or the inclined side surface of the mounting table. 3. The disk device according to claim 2, wherein The traverse member includes a traverse chassis on which an optical pickup and a turntable are mounted and a synthetic resin lever shift, and a rear portion of the traverse chassis is connected to the loader chassis via a rear elastic body so as to be movable up and down. In addition, a front portion of the traverse chassis is connected to the lever shift via a front elastic body, and a cam slider connected to the lever shift via a cam mechanism is slidably disposed on the loader chassis, and the lever shift is rod-shaped. The elastic cushioning material is integrally protruded, and when the lever shift is moved down to the lower limit position, the elastic cushioning material is elastically displaced by contacting the upper surface or the inclined side surface of the mounting table. The disk device according to claim 3.

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