JP3094730U - Disc player - Google Patents

Abstract

(57) [Summary] [Purpose] To surely correct the attitude of a disc pushed up diagonally. The positioning concave step surface 4a close to the swing axis O1 of the swing holder 11 on the housing center side on the lower surface of the chuck arm 6 is provided.
A substantially L-shaped rib 20A as viewed in plan is integrally protruded substantially symmetrically about the imaginary line L at a position facing the outer peripheral edge Db of the disk D on an imaginary line L connecting the axis and the axis O2 of the turntable 8. At the same time, both ends 20a and 20b of the rib 20A are arranged so as to intersect the outer peripheral edge Db of the disk D, and a gap between the rib 20A and the disk D on the turntable 8 which has moved upward f is formed. The thickness is set to be substantially the same as the thickness of the disk D. When the disk D is pushed up obliquely by the central projection 8a of the turntable 8 which moves upward, the upper end of the outer peripheral edge Db of the disk D is brought into contact with the rib 20A. The disk D down.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  The present invention is a disc capable of using a plurality of discs such as a DVD. Disc players such as quote changers.

[0002]

[Prior art]

  Conventionally, there is a technique described in Patent Document 1 or the like as a disc player technique, An example of this will be described with reference to FIGS. 7 to 9. In the case of the changer, the slide tray 2 made of synthetic resin is provided in the housing 1 in the front-back direction a, It is arranged in b so that it can move in and out, and around the central axis 3 projecting at the center of the slide tray 2. A rotary tray 4 which can be intermittently rotated in the direction of arrow c is arranged on the slide tray 2. A plurality of (five in this embodiment) data are placed on the upper surface of the rotary tray 4. By placing the disk mounting portions 5 in the circumferential direction at predetermined intervals, the disk mounting portions 5 can be mounted. A plurality of positioning concave step surfaces 4a to 4d are formed along the peripheral edge of the portion 5, and The clamper 7 is fixed to the chuck arm 6 extending from the rear part of the tray 2 to the central shaft 3. A turntable 8 mounted so as to be vertically swingable within the range and facing the clamper 7. Spindle motor 9 for rotating the lens and optical pickup movable in the directions of arrows d and e 10 and 10 are arranged on the swing holder 11, and the turntable 8 and the optical pickup 1 are arranged. 0 to the disk mounting portion 5 and the slide tray 2 of the rotary tray 4 facing each other. Openings 12 and 13 are opened respectively, and the rocking holder 11 is provided on both sides of the base end in the front-back direction. A shaft in which a pivot shaft 14 projecting along a and b is integrally formed on the lower surface of the slide tray 2. By being fitted into the receiving portion 15, the swing axis center O1 connecting the both pivot shafts 14 is centered. And the swing holder 11 is pivotally mounted so that it can swing up and down f and g. A cam shaft 16 projecting from the above portion is fitted into a cam groove 17a of a cam disc 17, and The cam groove 17a and the cam shaft 16 are rotated by rotating the circular disc 17 forward and backward, h and i. The swing holder 11 is vertically swung f and g about the swing axis O1.

[0003]   In the above configuration, the disc D is mounted on each disc mounting portion 5 and By pressing the disc selection button (not shown), the rotary The tray 4 is intermittently rotated by a predetermined angle in the direction of arrow c to turn the predetermined disk D into a turntable. After facing the cable 8 and the optical pickup 10, move the cam disk 17 in the direction of arrow i. By rotating and swinging the swinging holder 11 upward, the center of the turntable 8 The protrusion 8a is fitted into the center hole Da of the disc D, and the disc D is turned on. It is chucked by the bull 8 and the clamper 7 (see FIGS. 8 and 9), and the spindle The disk 9 is rotated by the motor 9 via the turntable 8 and the optical pickup By moving the disk 10 in the directions of arrows d and e, the data recorded on the disk D is recorded. The information to be read is read by the optical pickup 10 and reproduced.

[0004]

[Patent Document 1]   Japanese Utility Model Publication No. 5-35472

[0005]

[Problems to be solved by the device]

  In the above configuration, when the rotary tray 4 is intermittently rotated, each disk mounting portion 5 Since vibration is applied to the upper disc D, the disc is initially placed in the substantially central portion of each disc mounting portion 5. The disk D that has been placed is gradually moved so that the outer peripheral edge Db of the disk D is It may be pressed against the positioning concave step surfaces 4a and 4b on the center side of the body 1. this In the state, the center hole Da of the disc D is eccentric from the axis O2 of the turntable 8. Therefore, when the turntable 8 is moved upward f, as shown in FIGS. 10 and 11. In addition, the upper tapered surface 18 of the central protrusion 8a of the turntable 8 is located at the center of the disk D. When the disc D is pressed against the peripheral edge of the hole Da, the disc D has a concave step surface 4 for positioning. It may be pushed up diagonally with a as the fulcrum. It becomes impossible for the optical pickup 10 to read the stored information.

[0006]   In consideration of the above-mentioned difficulties, the present invention reliably fixes the posture of the disc pushed up diagonally. The purpose is to provide a disc player that can be corrected. It

[0007]

[Means for Solving the Problems]

  In order to achieve the above object, the device according to claim 1 has a slide tray in a housing. Is arranged so that it can move in and out in the front-back direction, and the The rotary tray that can be intermittently rotated by the Multiple disc mounting parts are recessed at regular intervals in the circumferential direction on the upper surface of the rotary tray. By doing so, a plurality of positioning concave step surfaces are formed along the periphery of each disk mounting portion. A disc autochanger made from the rear of the slide tray The clamper is attached to the chuck arm that extends to the axis so that it can move up and down within a certain range. The turntable and the optical pickup facing the clamper are mounted on the slide plate. It is placed on a swing holder that is pivotally attached to the bottom surface of the lay so that it can swing up and down. And the optical disk pickup, each disk mounting part and slide of the rotary tray Each tray has an opening so that the rotary tray can be rotated at a specified angle intermittently. Turn the disk placed on the specified disk placement part by turning it And the optical pickup, then move the swing holder upward to Insert the center protrusion of the turntable into the center hole of the disc and turn the disc. Chuck by table and clamper and rotate via turntable The information recorded on the disc is read by an optical pickup. In a sprayer, a swinging holder is provided on the lower surface of the chuck arm at the center of the housing. On the imaginary line connecting the positioning concave step surface close to the swing axis of the At the position facing the outer peripheral edge of the disc, a pressing member composed of a generally L-shaped rib in plan view is provided in front. The pressing member is integrally projected substantially in line symmetry around the virtual line, and both end portions of the pressing member are provided. Is placed so that it intersects the outer peripheral edge of the disc, and the pressing member and the The gap between the disc and the disc is set to be approximately the same as the thickness of the disc. And the central protrusion of the rotating turntable pushes the disc up diagonally. When the disc is pressed, the upper edge of the outer peripheral edge of the disc is brought into contact with the pressing member to push the disc. It is characterized by lowering it.

[0008]   The above configuration corresponds to the first embodiment of the present invention (see FIGS. 1 to 3). According to this, the upper tapered surface of the central protrusion of the raised turntable is The disk is pressed against the peripheral edge of the center hole so that Push up diagonally with the concave step surface for positioning near the swing axis of the swing holder as the fulcrum. When viewed from above, the top edge of the outer peripheral edge of the disc is The disc is pushed down by coming into contact with the pressing member composed of L-shaped ribs. The posture is corrected and the information recorded on the disc is read by the optical pickup. Can be read reliably.

[0009]   Further, both ends of the pressing member are arranged so as to intersect the outer peripheral edge of the disc. The disc is pushed down stably by two-point pressing by both ends of the pressing member. Therefore, the posture of the disc can be surely corrected.

[0010]   Further, the disc is placed between the pressing member and the disc on the turntable which has been moved upward. Since the gap is set to be approximately the same width as the thickness of the disc, the disc may Even if it is slightly deformed, do not accidentally contact the disc with the pressing member. When the disc is pushed up diagonally, it can be smoothly rotated. The upper edge of the outer edge of the disc is brought into contact with the pressing member, and the posture of the disc Can be corrected quickly.

[0011]   What is important here is that the pressing member is located on the center side of the housing and is the swing axis center of the swing holder. Of the disc on the imaginary line connecting the concave step surface for positioning close to the It means that it is provided at a position facing the outer peripheral edge. The upper edge of the outer edge of the disc pushed up to The center hole of the disc and securely fit it to the center protrusion of the turntable. Thus, it is possible to provide a practical disc autochanger.

[0012]   According to a second aspect of the invention, the slide tray is arranged in the housing so that the slide tray can move forward and backward. Placed on the slide tray and projecting in the center of the slide tray and capable of intermittent rotation around a central axis The reay tray is placed on the slide tray, and is placed on the upper surface of the rotary tray. By arranging a plurality of disk mounting portions in the circumferential direction at predetermined intervals, each disk Disk auto chuck with a plurality of positioning concave steps formed along the periphery of the mounting section. An encoder that extends from the rear of the slide tray to the center axis. A clamper is attached to the arm so that it can swing up and down within a certain range, and it faces the clamper. A turntable and optical pickup that can be vertically rocked on the bottom surface of the slide tray. It is placed on a rocking holder that is pivotally connected to the turntable and faces the turntable and optical pickup. Then, open the disc tray on the rotary tray and the slide tray. Has been opened, and the rotary tray can be rotated by a predetermined angle intermittently. The disc mounted on the disc mounting part of the turntable and the optical pickup After facing each other, move the swing holder upward to move the center protrusion of the turntable. Insert the part into the center hole of the disc and attach the disc to the turntable and clamper. More chucked and recorded on the disc rotated through the turntable In a disc player that reads the existing information with an optical pickup Positioning of the lower surface of the chuck arm close to the swing axis of the swing holder on the housing center side. Opposes the outer peripheral edge of the disc on a virtual line that connects the concave step surface and the axis of the turntable. A pressing member made of an elastic plate is attached to the position where the pressing member moves upward with the pressing member. The gap between the disc and the disc is set to be approximately the same as the thickness of the disc. And the central protrusion of the rotating turntable pushes the disc up diagonally. When the disc is pressed, the upper edge of the outer peripheral edge of the disc is brought into contact with the pressing member to push the disc. It is characterized by lowering it.

[0013]   The above configuration corresponds to the fourth embodiment of the present invention (see FIG. 6), According to this, it is possible to obtain substantially the same effect as the device according to claim 1, and in particular, , The upper edge of the outer peripheral edge of the disk pushed up diagonally by the elastic plate forming the pressing member Surface contact is made by the elastic plate, and the disk is elastically secured by the surface contact by the elastic plate. Since it is fixed and pushed down, the posture of the disc can be corrected without fail.

[0014]   According to a third aspect of the present invention, a plurality of positions are provided along the periphery of the disk mounting portion in the housing. A concave step surface for determination is formed on the chuck arm arranged above the disk mounting portion. A clamper is attached so that it can swing up and down within a certain range, and The turntable and optical pickup are placed on a swing holder that can be swung vertically. Placed, place the disc on the disc mount, and move the swing holder upward. This allows the center protrusion of the turntable to fit into the center hole of the disc, Chuck the disk with the turntable and clamper Read the information recorded on the disc rotated through the optical pickup. In the disc player configured as described above, the center of the housing on the lower surface of the chuck arm Side of the turntable axis and the concave step surface for positioning near the rocking axis of the rocking holder. A pressing member is provided at a position facing the outer peripheral edge of the disk on the imaginary line connecting the two. , When the disc is pushed up diagonally by the central protrusion of the moving turntable The upper edge of the outer peripheral edge of the disc is brought into contact with the pressing member and the disc is pushed down. It is characterized by doing so.

[0015]   According to the above configuration, the upper end taper surface of the central protrusion of the turntable that has moved up is The disc is pushed toward the center of the housing by being pressed against the periphery of the center hole of the disc. It is pushed up diagonally with the positioning concave step surface near the swing axis of the swing holder as the fulcrum. Even when the disc is pressed, the upper edge of the outer peripheral edge of the disc is held on the lower surface of the chuck arm. Touches the disc to push it down and correct its position. To ensure that the information recorded on the disc is read by an optical pickup. You can

[0016]   What is important here is that the pressing member is located on the center side of the housing and is the swing axis center of the swing holder. Of the disc on the imaginary line connecting the concave step surface for positioning close to the It means that it is provided at a position facing the outer peripheral edge. The upper edge of the outer edge of the disc pushed up to The center hole of the disc and securely fit it to the center protrusion of the turntable. Can be made.

[0017]   A fourth aspect of the invention is the device of the third aspect, wherein the pressing member is , Integrally formed on the lower surface of the chuck arm so as to be substantially line-symmetrical about the virtual line. It is characterized in that it consists of ribs whose both ends cross the outer peripheral edge of the disk.

[0018]   According to the above configuration, both end portions of the rib forming the pressing member and the outer peripheral edge of the disc are The ribs are arranged so that they intersect, and the two points of the ribs hold the disc in place. Since the disc is pushed down stably, the posture of the disc can be surely corrected.

[0019]   According to a fifth aspect of the present invention, the pressing member is attached to a lower surface of the chuck arm. It is characterized in that it is composed of an elastic plate which is attached and faces the outer peripheral edge of the disk.

[0020]   According to the above configuration, the elastic plate forming the pressing member is pushed up diagonally by the elastic plate. The upper edge of the outer peripheral edge of the disk is in surface contact, and the elastic plate causes surface contact. Since the disc is pushed down elastically and stably, the posture of the disc is surely corrected. You can do it.

[0021]   The invention according to claim 6 is the device according to any one of claims 3 to 5, The gap between the pressing member and the disk on the turntable that has moved up is It is characterized in that it is set to be almost the same as the thickness of the circle.

[0022]   According to the above configuration, between the pressing member and the disk on the turntable that has moved up. Since a gap with the same width as the thickness of the disc is set in the Even if the disc is slightly deformed due to distortion, etc., it unexpectedly contacts the pressing member. You can rotate it smoothly without pushing it, and the disc pushes up diagonally. When the disc is lifted, the upper edge of the outer peripheral edge of the disc is brought into contact with the pressing member to The posture of the disc can be corrected quickly.

[0023]   The invention according to claim 7 is the device according to any one of claims 3 to 6, The disk mounting part is a slide that can be retracted in the front-back direction of the disk autochanger. Predetermined in the circumferential direction on the upper surface of the rotary tray that is intermittently rotatably arranged on the id tray. The feature is that a plurality of recesses are provided at intervals.

[0024]   According to the above configuration, the disc is slanted by the central protrusion of the turntable that has moved upward. Make sure to correct the posture of the disc even when it is pushed up for A practical disc autochanger can be provided.

[0025]

[Embodiment of device]

  1 and 2 show a disk autochanger according to a first embodiment of the present invention. The main part of the swing holder 1 is located on the lower surface of the chuck arm 6 on the center side of the housing. Positioning concave step surface 4a close to the rocking axis O1 of No. 1 and the axis O2 of the turntable 8; The pressing member 20 is located at a position facing the outer peripheral edge Db of the disk D on the virtual line L connecting the It is provided. The configuration other than the above is almost the same as the configuration shown in FIGS. 7 to 11. Therefore, the same reference numerals are given to the same portions and the description thereof will be omitted.

[0026]   As shown in FIG. 3, the pressing member 20 has a virtual line on the lower surface of the chuck arm 6. The both ends 20a and 20b of the disk D are integrally projected so as to be substantially line-symmetrical about L. It is composed of a substantially L-shaped rib 20A in a plan view which intersects the outer peripheral edge Db, and is also shown in FIG. As described above, the gap between the rib 20A and the disk D on the turntable 8 that has moved upward f α is set to be substantially the same as the thickness t of the disk D.

[0027]   As an example of specific dimensions, as shown in FIG. 2, the thickness t of the disk D is 1.2. mm, the gap α is 1.2 mm, and the height s of the rib 20A (pressing member 20) is 2. It is 4 mm.

[0028]   In the above configuration, the disc D is mounted on each disc mounting portion 5 and By pressing the disc selection button (not shown), the same as before based on the command signal The center projection 8a of the turntable 8 which has been moved up by the procedure of By setting it to Da, the disk D is separated by the turntable 8 and the clamper 7. Chucking (see solid line in Figure 2).

[0029]   Here, when the rotary tray 4 is intermittently rotated, the data on each disk mounting portion 5 is Due to the vibration applied to the disc D, the outer peripheral edge Db of the disc D is located on the center side of the housing 1. The turntable 8 is moved upward while being pressed against the concave step surfaces 4a and 4b. By doing so, the upper end taper surface 18 of the central protrusion 8a of the turntable 8 is deformed. The disc D is pressed against the peripheral edge of the center hole Da of the disc D, and the disc D is positioned in the concave step. When it is pushed up diagonally with the surface 4a as a fulcrum (see the solid line in FIG. 1 and the phantom line in FIG. 2). And the upper end of the outer peripheral edge Db of the disk D has both ends 20a and 20b of the rib 20A. Is touched and pushed down.

[0030]   According to the above configuration, the upper end of the outer peripheral edge Db of the disc D pushed up diagonally is relieved. The disc D is pushed down and its posture is corrected by coming into contact with the knob 20A. Since it is corrected, the information recorded on the disc D is read by the optical pickup 10. Can be read reliably.

[0031]   Further, as shown in FIG. 3B, a substantially L-shaped groove in plan view forming the pressing member 20 is formed. The both ends 20a, 20b of the tab 20A are arranged so as to intersect the outer peripheral edge Db of the disc D. The rib 20A is mounted on the rib 20A, and the two ends 20a and 20b of the rib 20A press the two points to fix it. Since the disc D is pushed down stably, the posture of the disc D must be corrected without fail. You can

[0032]   Further, between the rib 20A and the disk D on the turntable 8 which has moved upward, the disc Since the gap α having a width substantially equal to the thickness t of the disk D is set, the disk D is molded. Even if the disk D is slightly deformed due to distortion, etc., it accidentally contacts the rib 20A. It can be rotated smoothly without touching it, and the disc D is pushed diagonally. When the disc D is lifted, the upper end of the outer peripheral edge Db of the disc D is brought into contact with the rib 20A. Thus, the posture of the disc D can be corrected quickly.

[0033]   What is important here is that the rib 20A causes the swing holder 11 to swing on the center side of the housing 1. A temporary connection between the positioning concave step surface 4a close to the axis O1 and the axis O2 of the turntable 8 It is provided at a position on the virtual line L that faces the outer peripheral edge Db of the disk D. Therefore, the upper end of the outer peripheral edge Db of the disc D pushed up diagonally is By pressing it intensively, the posture of the disc D is corrected, and the center hole Da of the disc D is corrected. Is designed to be fitted into the central protrusion 8a of the turntable 8 securely. A disk autochanger can be provided.

[0034]   In the above-described first embodiment, the pressing member 20 serves as the rib 2 that is substantially L-shaped in plan view. However, it is not limited to this, and as shown in FIG. Both ends 20a are integrally formed on the lower surface of the arm 6 in a substantially line symmetrical manner about the imaginary line L. , 20b intersecting the outer peripheral edge Db of the disk D by a generally arcuate rib 20B in plan view. The pressing member 20 may be formed (second embodiment), and as shown in FIG. , Is integrally projected on the lower surface of the chuck arm 6 substantially in line symmetry around the imaginary line L. A generally C-shaped rib in plan view in which the end portions 20a, 20b intersect the outer peripheral edge Db of the disk D. The pressing member 20 may be formed of 20C (third embodiment). The operational effects of the third embodiment are almost the same as the operational effects of the first embodiment. Since they are almost the same, the description thereof will be omitted.

[0035]   Further, as shown in FIG. 6, an elastic plate 20D such as a rubber plate is used as the pressing member 20. The elastic plate 20D is used for the outer peripheral edge Db of the disc D on the lower surface of the chuck arm 6. They may be attached to opposite positions (fourth embodiment). According to this, the elastic plate 2 The upper end of the outer peripheral edge Db of the disk D pushed obliquely to 0D is brought into surface contact. The disk D is elastically and stably pushed by the surface contact by the elastic plate 20D. Since it is lowered, the posture of the disc D can be surely corrected.

[0036]

[Effect of device]

  According to the invention described in claim 1, the first embodiment (see FIGS. 1 to 3) is shown. The upper tapered surface of the center protrusion of the raised turntable When pressed against the periphery of the core hole, the disk swings toward the center of the housing. Even when it is pushed up diagonally with the positioning concave step surface close to the swing axis of , The upper edge of the outer peripheral edge of the disk is a generally L-shaped rib in plan view provided on the lower surface of the chuck arm. The disc is pushed down by its contact with the holding member consisting of The power is corrected and the information recorded on the disc is read securely by the optical pickup. Can be taken.

[0037]   Further, both ends of the pressing member are arranged so as to intersect the outer peripheral edge of the disc. The disc is pushed down stably by two-point pressing by both ends of the pressing member. Therefore, the posture of the disc can be surely corrected.

[0038]   Further, the disc is placed between the pressing member and the disc on the turntable which has been moved upward. Since the gap is set to be approximately the same width as the thickness of the disc, the disc may Even if it is slightly deformed, do not accidentally contact the disc with the pressing member. When the disc is pushed up diagonally, it can be smoothly rotated. The upper edge of the outer edge of the disc is brought into contact with the pressing member, and the posture of the disc Can be corrected quickly.

[0039]   What is important here is that the pressing member is located on the center side of the housing and is the swing axis center of the swing holder. Of the disc on the imaginary line connecting the concave step surface for positioning close to the It means that it is provided at a position facing the outer peripheral edge. The upper edge of the outer edge of the disc pushed up to The center hole of the disc and securely fit it to the center protrusion of the turntable. Thus, it is possible to provide a practical disc autochanger.

[0040]   According to the second aspect of the invention, corresponding to the fourth embodiment (see FIG. 6), It is possible to obtain substantially the same effect as the device according to the first aspect of the present invention, and in particular, the pressing member is The upper edge of the outer peripheral edge of the disc that is pushed up diagonally makes surface contact with the elastic plate to be formed. The elastic plate pushes down the disk elastically and stably by the surface contact with the elastic plate. Therefore, the posture of the disc can be surely corrected.

[0041]   According to the invention as set forth in claim 3, the upper end of the central projection of the turntable which has moved upwards. The tapered surface is pressed against the peripheral edge of the center hole of the disc, so that the disc Diagonally with the concave step surface for positioning near the swing axis of the swing holder as the fulcrum on the center side of the housing. Even when pushed up, the upper edge of the outer peripheral edge of the disc is provided on the lower surface of the chuck arm. The disc is pushed down by its contact with the holding member Since it is corrected, the information recorded on the disc can be reliably recorded with an optical pickup. Can be read.

[0042]   What is important here is that the pressing member is located on the center side of the housing and is the swing axis center of the swing holder. Of the disc on the imaginary line connecting the concave step surface for positioning close to the It means that it is provided at a position facing the outer peripheral edge. The upper edge of the outer edge of the disc pushed up to The center hole of the disc and securely fit it to the center protrusion of the turntable. Can be made.

[0043]   According to the invention as set forth in claim 4, both ends of the rib forming the pressing member are dismounted. It is arranged so as to intersect the outer peripheral edge of the rib, and two points are held by both ends of the rib. Since the disc is pushed down stably with, you can surely correct the posture of the disc. You can

[0044]   According to the invention of claim 5, the elastic plate forming the pressing member is pushed up obliquely. The upper end of the outer peripheral edge of the peeled disc is in surface contact with the elastic plate. Since the disc is pressed down elastically and stably by the surface contact, the posture of the disc It can be corrected without fail.

[0045]   According to the invention as set forth in claim 6, the detent on the turntable which is moved upward together with the pressing member is moved. Since a gap with the same width as the thickness of the disc is set between the disc and the disc, Even if the disc is slightly deformed due to molding distortion, etc. It can be rotated smoothly without accidentally contacting the When pushed up diagonally, the upper edge of the outer peripheral edge of the disc does not touch the pressing member. Therefore, the posture of the disc can be corrected quickly.

[0046]   According to the invention of claim 7, the central protrusion of the turntable which is moved upward Be sure to correct the posture of the disc even when it is pushed up at an angle. Thus, it is possible to provide a practical disc autochanger.

[Brief description of drawings]

FIG. 1 is a plan view of a main part of a disc auto changer according to a first embodiment of the present invention.

FIG. 2 is a view on arrow AA of FIG.

FIG. 3A is a bottom perspective view of the chuck arm,
(B) is an enlarged horizontal sectional view.

FIG. 4A is a bottom perspective view of a chuck arm in a disc auto changer according to a second embodiment of the present invention, and FIG. 4B is an enlarged horizontal sectional view.

FIG. 5A is a bottom perspective view of a chuck arm in a disk autochanger according to a third embodiment of the present invention, and FIG. 5B is an enlarged horizontal sectional view.

FIG. 6A is a bottom perspective view of a chuck arm in a disc auto changer according to a fourth embodiment of the present invention, and FIG. 6B is an enlarged horizontal sectional view.

FIG. 7 is a partially cutaway plan view showing a conventional example.

FIG. 8 is a vertical sectional view of the same.

FIG. 9 is a perspective view of the main part.

FIG. 10 is a vertical cross-sectional view of a main part of the disc in a state of being pushed up diagonally.

FIG. 11 is a perspective view of the main part.

[Explanation of symbols]

1 case 2 slide tray 3 central axis 4 Rotary tray 5 Disk mount 6 Chuck arm 7 clamper 8 turntables 8a Central protrusion of turntable 10 Optical pickup 11 Swing holder 14 pivot 20 Holding member 20A rib 20B rib 20C rib 20D elastic plate D disk Center hole of Da disk Outer edge of Db disc O1 swing axis O2 Turntable axis L virtual line α gap t Disc thickness

Claims (7)

[Scope of utility model registration request] 1. A slide tray is arranged in the housing so as to be able to extend and retract in the front-rear direction, and a rotary tray projecting in the center of the slide tray and intermittently rotatable about a central axis is arranged on the slide tray. A disc autochanger in which a plurality of disc mounting portions are formed on the upper surface of a rotary tray at predetermined intervals in the circumferential direction to form a plurality of positioning concave step surfaces along the peripheral edge of each disc mounting portion. A clamper is attached to a chuck arm extending from the rear portion of the slide tray to the central axis so as to be vertically movable within a certain range, and a turntable and an optical pickup facing the clamper are vertically swingable on the lower surface of the slide tray. It is placed on a swinging holder that is pivotally mounted, and faces each of the turntable and optical pickup to mount each disc on the rotary tray. Openings are provided in the mounting section and the slide tray, respectively.By rotating the rotary tray intermittently by a predetermined angle, the disc mounted on the predetermined disc mounting section is opposed to the turntable and the optical pickup, and then shaken. By moving the movable holder upward, the central protrusion of the turntable is fitted into the center hole of the disc, the disc is chucked by the turntable and the clamper, and recorded on the disc rotated through the turntable. In a disc player in which the information present is read by an optical pickup, a virtual connection between the positioning concave step surface near the swing axis of the swing holder and the axis of the turntable on the bottom side of the chuck arm near the center of the housing. The pressing member composed of a substantially L-shaped rib in plan view is provided at a position facing the outer peripheral edge of the disk on the line. The pressing member is integrally and substantially projecting symmetrically with respect to the ideal line, and both ends of the pressing member are arranged so as to intersect the outer peripheral edge of the disk. The gap between them is set to be approximately the same as the thickness of the disc, and when the disc is pushed up diagonally by the central protrusion of the upwardly moving turntable, the upper edge of the outer peripheral edge of the disc is brought into contact with the pressing member and the disc A disc player characterized in that it is pushed down. 2. A slide tray is arranged in the housing so as to be able to move forward and backward, and a rotary tray projecting in the center of the slide tray and capable of intermittent rotation around a central axis is arranged on the slide tray. A disc autochanger in which a plurality of disc mounting portions are formed on the upper surface of a rotary tray at predetermined intervals in the circumferential direction to form a plurality of positioning concave step surfaces along the peripheral edge of each disc mounting portion. A clamper is attached to a chuck arm extending from the rear portion of the slide tray to the central axis so as to be vertically swingable within a certain range, and a turntable and an optical pickup facing the clamper are vertically swingable on the lower surface of the slide tray. Each of the discs on the rotary tray is placed on a swing holder that is pivotally attached to the disc and faces the turntable and optical pickup. Openings are respectively formed in the mounting portion and the slide tray, and the rotary tray is intermittently rotated by a predetermined angle to make the disc mounted on the predetermined disc mounting portion face the turntable and the optical pickup. By moving the swing holder up,
The central projection of the turntable is fitted into the center hole of the disc, the disc is chucked by the turntable and the clamper, and the information recorded on the disc rotated through the turntable is read by the optical pickup. In the disk player, the lower surface of the chuck arm faces the outer peripheral edge of the disk on an imaginary line connecting the positioning concave step surface near the swing axis of the swing holder and the axis of the turntable on the housing center side. A pressing member made of an elastic plate is attached to the position, and the gap between the pressing member and the disk on the lifted turntable is set to be substantially the same as the thickness of the disk. When the disc is pushed up diagonally by the central protrusion, the upper end of the outer peripheral edge of the disc is brought into contact with the pressing member to Disc player being characterized in that the pushing down. 3. A plurality of positioning concave step surfaces are formed along the peripheral edge of the disk mounting portion in the housing, and the clamper is vertically swingable within a certain range on the chuck arm arranged above the disk mounting portion. A turntable and an optical pickup are arranged on a swing holder that is attached to the disk mount portion and is capable of swinging up and down, and the swing holder is mounted on the disk mount portion. Information is recorded on the disc rotated by the turntable and the clamper by inserting the central protrusion of the turntable into the central hole of the disc by moving the turntable and the clamper. In a disc player in which the optical pickup is used to read the data, a position near the swing axis of the swing holder at the center of the case on the lower surface of the chuck arm. A pressing member is provided at a position facing the outer peripheral edge of the disc on the virtual line connecting the concave step surface for placement and the axis of the turntable, and the disc is pushed up diagonally by the central protrusion of the moving turntable. A disc player, characterized in that the upper end of the outer peripheral edge of the disc is brought into contact with a pressing member when the disc is pushed down. 4. The pressing member comprises a rib integrally projecting on the lower surface of the chuck arm in a substantially line-symmetrical manner about the virtual line and having both ends intersecting the outer peripheral edge of the disk. The disc player according to claim 3. 5. The disc player according to claim 3, wherein the pressing member is an elastic plate that is attached to the lower surface of the chuck arm and faces the outer peripheral edge of the disc. 6. The gap between the pressing member and the disk on the turntable which has been moved upward is set to be substantially the same as the thickness of the disk.
The disc player described in any one of 1. 7. A plurality of the disk mounting portions are provided on the upper surface of a rotary tray rotatably and intermittently arranged on a slide tray that can be retracted in the front-rear direction of the disk autochanger, at a predetermined interval in the circumferential direction. The disc player according to any one of claims 3 to 6, characterized in that: