JP3048964U - Disc player - Google Patents

Abstract

(57) [Summary] [Problem] To reliably chuck a disk. SOLUTION: One end of a chassis 50 supporting a turntable 10 is connected to a base frame 1 via dampers 51a, 51b.
8 is pivotally connected to the base frame 18 and pivotally supported by the base frame 18 via a pivot shaft 54. The other end of the chassis 50 is connected to the other end of the chassis 50 via dampers 51c and 51d. After the disk D is loaded into the base frame 18, the rotating frame 53 is rotated forward f to bring the chassis 50 close to the disk pressing member 12, whereby the disk pressing member 12 and the turntable 10 are rotated. In the disk player in which the disk D is chucked, a pivot shaft 54 protruding from the rotating frame 53 is attached to the base frame 18 by the chassis 50.
Is inserted into a long hole 52 formed along a direction a, b substantially perpendicular to the moving direction of.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a disk player for reproducing, recording, or erasing an optical disk or a magneto-optical disk (hereinafter, referred to as a disk), which is abbreviated as a CD or MD.

[0002]

[Prior art]

 Conventionally, as an example of this type of disc player, there is one disclosed in Japanese Patent Application Laid-Open No. 9-27181. As shown in FIGS. 11 and 12, one end of the chassis 3 has a pair of left and right sides on a base frame 2 that supports a tray 1 for mounting a disk D movably in front and rear directions a and b. A substantially U-shape in which a pair of left and right pivot shafts 5 protruding from both sides are rotatably fitted into circular holes 2a formed in the base frame 2 and are rotatably connected via rubber dampers 4a and 4b. Spherical cams 6 are connected to the other end of the chassis 3 via a pair of left and right rubber dampers 4c, 4d. The follower 7 is fitted into a cam groove 9 of a cam 8 movable in the left-right direction, reads a spindle motor 11 for rotating the turntable 10 on the chassis 3 at high speed, and reads and reproduces information stored in a disk D (or). Optical pickup (not shown) for recording and erasing) Is provided, Ru der those disc holding member 12 to face the turntable 10 to the base frame 2 is provided movably within a predetermined range.

In the above configuration, as shown in FIG. 11, the cam 8 is moved to the left (or right) to engage the upper step 9 a of the cam groove 9 with the cam follower 7, whereby the rotating frame 6 is moved. The tray 1 on which the disk D is placed is retracted in the direction of arrow a in a state where the chassis 3 is moved away from the disk holding member 12 by moving the chassis 3 around the pivot shaft 5 and is stored in the base frame 2. . Next, as shown in FIG. 12, the cam 8 is moved to the right (or left) to engage the lower step 9b of the cam groove 9 with the cam follower 7, thereby pivotally supporting the rotating frame 6. The disk 3 is chucked by the disk pressing member 12 and the turntable 10 by moving the chassis 3 close to the disk pressing member 12 by moving the shaft 5 around the center, and the disk D is rotated at high speed by the spindle motor 11. The information stored in the disk D is read by an optical pickup and reproduced (or recorded or erased).

[0004]

[Problems to be solved by the invention]

 In the above configuration, since the pivot shafts 5 protruding from both side surfaces of the rotating frame 6 are rotatably inserted into the circular holes 2a, as shown in FIG. A slight shift ΔL is generated between the trajectory A and the outer trajectory B of the chassis 3, and the shift ΔL is absorbed by the elastic deformation of the dampers 4 a to 4 d. The turntable 11 is moved in the front and rear directions a and b, and its movement width changes due to deterioration of the dampers 4a to 4d, temperature change, etc., so that the turntable 11 is displaced with respect to the center hole of the disk D, When chucking, the disc D may ride on the turntable 10 and the turntable 10 and the disc pressing member 12 may not be able to reliably chuck the disc D.

[0005] In view of the above problems, an object of the present invention is to provide a disc player that can reliably chuck a disc.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, according to the present invention, one end of a chassis supporting a turntable is rotatably connected to a base frame via a damper, and is turned to the base frame via a pivot shaft. A rotatably supported pivot frame is connected to the other end of the chassis via a damper, and the chassis is supported by the base frame by rotating the pivot frame forward by rotation driving means. In a disk player in which a disk is chucked between the disk pressing member and the turntable by approaching the disk pressing member, the pivot shaft is protruded from the rotating frame, and The support shaft is fitted in an elongated hole formed in the base frame along a direction substantially perpendicular to the moving direction of the chassis.

According to the above configuration, the pivot shaft protruding from the rotating frame is fitted into the elongated hole formed in the base frame along a direction substantially perpendicular to the moving direction of the chassis. When the pivot shaft moves in the elongated hole with the movement of the chassis, the outer peripheral rotation locus of the rotating frame substantially coincides with the outer peripheral movement locus of the chassis. The turntable supported by the chassis is concentrically positioned with respect to the center hole of the disc loaded into the base frame, without being moved by being pushed by the rotating frame. Chucking can be reliably performed between the turntable and the disc holding member.

According to a second aspect of the present invention, one end of a chassis supporting the turntable is rotatably connected to a base frame via a damper, and is rotatably connected to the base frame via a pivot shaft. A pivotally supported rotating frame is connected to the other end of the chassis via a damper, and the rotating frame is normally rotated by a rotation driving means to hold the chassis on a disk holder supported by the base frame. In the disk player in which the disk is chucked by the disk pressing member and the turntable by approaching the member, the pivot is projected from the base frame and the pivot is The rotary frame is fitted in a long hole formed along a direction substantially perpendicular to the moving direction of the chassis.

[0009] According to the above configuration, the pivot shaft protruding from the base frame is fitted into the elongated hole formed in the rotation frame along a direction substantially orthogonal to the moving direction of the chassis. By the same operation as the invention described in Item 1, the disk can be reliably chucked by the turntable and the disk pressing member.

According to a third aspect of the present invention, in the first or second aspect of the present invention, when the rotating frame is rotated forward to bring the chassis closer to the disk pressing member, the rotating frame is moved to the position. The base frame is provided with an inclined surface for guiding in a direction away from the chassis along the elongated hole.

According to the above configuration, when the rotating frame is rotated forward, the rotating frame is guided in a direction away from the chassis along the inclined surface, so that the chassis is moved toward the disc holding member. By forcibly approaching the disk, chucking of the disk can be reliably performed.

According to a fourth aspect of the present invention, in the device according to any one of the first to third aspects, when the rotating frame is reversed and the chassis is separated from the disk pressing member, the rotating mechanism is rotated. It is characterized in that the end of the moving frame is brought into contact with the chassis.

According to the above configuration, when the rotating frame is reversed, the tip of the rotating frame is brought into contact with the chassis, and the chassis is forcibly separated from the disc pressing member, and the chucking is performed. Release can be performed reliably.

According to a fifth aspect of the present invention, in the device according to any one of the first to fourth aspects, the rotation drive means comprises a cam capable of reciprocating within a predetermined range, and the cam includes A cam follower provided at the end of the frame is engaged.

[0015] According to the above configuration, the cam follower provided at the distal end of the rotating frame is located near the center of the base frame, so that the size of the cam engaged with the cam follower can be reduced. it can.

According to a sixth aspect of the present invention, in the device according to any one of the first to fourth aspects, the rotation driving means includes a cam capable of reciprocating within a predetermined range, and the rotation driving means includes A cam follower provided at the rear end of the frame is engaged.

According to the above configuration, since the cam follower provided at the rear end of the rotating frame is located closer to the outside of the base frame, it is possible to easily engage the cam with the cam follower. it can.

The invention according to claim 7 is the invention according to any one of claims 1 to 6, characterized in that the base frame is mounted on a truck of a disk autochanger.

According to the above configuration, it is possible to reliably chuck a desired disk selected from a large number of disks and carried into the base frame on the cart.

[0020]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. 9 and 10 show a disk autochanger according to an embodiment of the present invention, in which an opening 14a with an opening / closing lid 15 is formed in the upper part of the front surface of a housing 14, and inside the housing 14, A disk array table 16 for arranging a large number of disks D at predetermined intervals, and a truck 17 reciprocally movable in the left and right directions c and d along the disk array table 16 are provided. A loading mechanism 19 for holding a desired disc D selected from a large number of discs D on the disc array table 16 and carrying it into the base frame 18, and a loading mechanism 19 for loading the disc D into the base frame 18 mounted thereon. And a chucking mechanism 20 for chucking the disc D.

The disk array table 16 has a front row portion 16a and a rear row portion 16b arranged in parallel at a predetermined distance from each other, and a space slightly larger than the thickness of the disk D between the two portions 16a and 16b. The disk D is inserted into a disk insertion groove 16d formed between the guide plates 16c.

The bogie 17 has a pair of left and right bosses 22 integrally projecting from a front surface of a bottom surface thereof and wheels 23 provided at a rear side of the bottom surface thereof. The wheel 23 is movably fitted to a bridge rod 24, and the wheel 23 is movably mounted on a guide rail 25 fixed to the bottom of the housing 14. A rack 26 extending parallel to the guide rods 24 is fixed to the bottom of the housing 14, and a drive motor (not shown) for rotating a pinion 27 meshing with the rack 26 is provided on the bogie 17. The bogie 17 is moved in the left and right directions c and d by rotating the pinion 27 forward and backward by the drive motor.

As shown in FIGS. 9 and 10, the loading mechanism 19 is disposed with the disk D interposed therebetween, and has a base end pivotally supported by the base frame 18 via a support shaft 29. A pair of disk holding arms 30, 31; disk engaging frames 32, 33 provided at the distal end of each arm 30, 31; and a pinion integrally formed at the base end of each arm 30, 31. And racks 38, 39 formed at the distal ends of moving rods 36, 37 supported on the base frame 18 so as to be able to reciprocate in the front-rear directions a, b and meshing with the pinions 34, 35, respectively. A pair of upper and lower rotary cams 43 and 44 fixed to a cam shaft 42 rotatably provided at the rear of the base frame 18 and having springs 40 and 41 for urging the moving rods 36 and 37 in one direction. Cam grooves 44a formed on the upper and lower surfaces of the lower rotary cam 44 , 44b are fitted with cam pins 45, 46 protruding from the rear ends of the moving rods 36, 37, respectively.

In the above configuration, for example, when reproducing information stored on the disk D, a desired disk D is designated from among a large number of disks D arranged on the disk array table 16 and the designation is performed. After the carriage 17 is moved to the position in front of the disk D and stopped, the rotating cams 43 and 44 are rotated in the direction of arrow e by the drive motor 48 via the power transmission mechanism 47, so that the moving rod 36 is moved in the direction of arrow b. At the same time, the moving rod 37 is moved in the direction of the arrow a, and the arms 30 and 31 are approached via the racks 38 and 39 and the pinions 34 and 35 to clamp the disk D (see the phantom line in FIG. 9). After the arms 30 and 31 are integrally rotated into the base frame 18, the moving rod 36 is moved in the direction of arrow a and the moving rod 37 is moved in the direction of arrow b. Thus, the two arms 30 and 31 are separated from each other to release the disk D from being pinched, and the disk D is transferred to the chucking mechanism 20 in the base frame 18 (see FIG. 1) and stored in the disk D. Reproduce information. After the end of the reproduction, by rotating the rotary cams 43 and 44 in the direction opposite to the arrow e, the disk D is returned to the original position on the disk array table 16 in the reverse procedure.

The chucking mechanism 20 will be described. As shown in FIGS. 1 to 5, one end of the chassis 50 is attached to a pair of upper and lower protrusions 18a projecting from the rear of one side surface of the base frame 18 by a rubber damper 51a. , 51b, and a long hole 52 is formed on the front side of the top plate portion 18b and the bottom plate portion 18c of the base frame 18 along the front and rear directions a, b substantially orthogonal to the moving direction of the chassis 3. A pair of upper and lower pivotal support shafts 54 protruding from the upper and lower surfaces of the rear end of the rotating frame 53 are fitted into the elongated holes 52, and a pair of upper and lower protruding members are provided at the center of the rotating frame 53. The protrusion 53a is connected to the other end of the chassis 50 via rubber dampers 51c and 51d. The chassis 50 reads the spindle motor 11 for rotating the turntable 10 at high speed and the information stored in the disk D. Only An optical pickup (not shown) for picking up and reproducing (or recording or erasing) is provided, and a bearing 55 provided at the rear of the other side surface of the base frame 18 is mounted on a bearing 55 through a pivot shaft 56 in the forward and reverse directions h, A disc holding member 12 is provided at a tip end of a swing frame 57 pivotally supported by i so as to be movable within a certain range.

Further, by fitting an elongated through hole 58 a penetrating the center portion to the camshaft 42, it is mounted on the upper rotating cam 43 so as to be movable within a predetermined range along the front and rear directions a and b. A cam pin 58b protruding from the rear end of the substantially U-shaped cam plate 58 is fitted into the annular cam groove 43a of the upper rotary cam 43, and a pair of cams Holes 59 and 60 are formed, and cam followers 61 and 62 projecting from the lower surface of the tip of the rotating frame 53 and the center of the lower surface of the swing frame 57 are fitted into the cam holes 59 and 60, respectively. ing.

Further, a pair of protruding pieces 63 are protruded from the center of one side surface of the base frame 18, and the rotating frame 53 is rotated forward f on each of the protruding pieces 63 so that the chassis 50 approaches the disk pressing member 12. At this time (see FIG. 3), an inclined surface 63a for guiding the rotating frame 53 in the direction b away from the chassis 50 along the elongated hole 52 is provided, and the rotating frame 53 is rotated in the reverse direction g so as to rotate the chassis. When the chassis 50 is separated from the disc holding member 12 (see FIG. 1), a contact portion 64 that comes into contact with the chassis 50 is provided at the tip of the rotating frame 53. Reference numeral 65 denotes a damper retaining bolt fixed to each of the projections 18a and 53a. ing.

In the above configuration, as shown in FIGS. 1 and 2, the turntable 10 and the disc holding member 12 are separated from each other, and the disc D is loaded into the base frame 18 by the loading mechanism 19 as described above. By rotating the rotating cams 43 and 44 in the direction of arrow e in this state, the cam plate 58 is moved in the direction of arrow a by the cam action of the cam pins 58b and the cam grooves 43a, and the cam holes 59 and 60 The rotating frame 53 and the swinging frame 57 are normally rotated f and h by the cam action of the cam followers 61 and 62, and the chassis 50 approaches the disc pressing member 12 as shown in FIGS. 3 and 4. The disc D is chucked by the turntable 10 and the disc holding member 12, and the information stored in the disc D is reproduced (or recorded) by the optical pickup. After the reproduction (or recording or erasing) is completed, the rotating frame 53 and the oscillating frame 57 are reversed g and i in the reverse procedure. As shown in the figure, the chassis 50 is separated from the disk pressing member 12, the chucking between the turntable 10 and the disk pressing member 12 is eliminated, and the disk D is returned to the original position of the disk array table 16 by the loading mechanism 19. It is.

According to the above-described configuration, the long hole 52 formed in the base frame 18 by the pivot shaft 54 projecting from the rotating frame 53 along the directions a and b substantially perpendicular to the moving direction of the chassis 50. 6 and a slight gap α is provided between the elongated hole 52 and the pivot shaft 54, so that the pivot shaft 54 is moved along with the movement of the chassis 50 as shown in FIG. By moving the inside, the outer-peripheral-side rotational trajectory A of the rotating frame 53 substantially coincides with the outer-peripheral-side moving trajectory B of the chassis 50. It is not pushed and moved in the front-rear directions a and b (see FIG. 13), whereby the turntable 10 is inserted into the center hole of the disc D loaded into the base frame 18 by the loading mechanism 19. Is positioned concentrically, and the disc D is turned. It is as possible out to reliably chucked by the Buru 10 and the disc pressing member 12.

When the rotating frame 53 is rotated forward f, the rotating frame 53 is guided in a direction away from the chassis 50 along the inclined surface 63a, so that the chassis 50 is held down by a disk pressing member. The disk D can be reliably chucked by forcibly approaching the disk 12 side.

Further, when the rotating frame 53 is rotated in the reverse direction g, the contact portion 64 provided at the tip end of the rotating frame 53 is brought into contact with the chassis 50, and the chassis 50 is pressed against the disk pressing member 12. , The chucking can be forcibly released to ensure that the chucking is released.

In addition, since the cam follower 61 provided at the distal end of the rotating frame 53 is located near the center of the base frame 18, the size of the cam plate 58 engaged with the cam follower 61 can be reduced. can do.

In the above embodiment, the pivot shaft 54 protrudes from the rotating frame 53, and the elongated hole 52 into which the pivot shaft 54 fits is formed in the base frame 18. A pivot shaft 54 projects from the base frame 18, and a long hole 52 into which the pivot shaft 54 fits is formed in the rotating frame 53 along directions a and b substantially perpendicular to the moving direction of the chassis 50. In this case, the disk D can be reliably chucked by the turntable 10 and the disk pressing member 12 by the same operation as the embodiment shown in FIGS.

Also, in the embodiment shown in FIGS. 1 to 6, the cam follower 61 is provided at the tip end of the rotating frame 53, but on the contrary, as shown in FIGS. The follower 61 may be provided at the rear end of the rotating frame 53. In this case, since the cam follower 61 provided at the rear end of the rotating frame 53 is located closer to the outside of the base frame 18, the cam follower 61 can easily engage the cam hole 59 of the cam plate 58. Can be combined.

Further, in the embodiment shown in FIGS. 1 to 8, a disk autochanger has been described as an example. However, the present invention is not limited to this. For example, as shown in FIGS. 1 can be applied to a disc player of a type in which the discs D are loaded into the base frame 2 one by one.

[0036]

[Effect of the invention]

 According to the first aspect of the present invention, since the pivot shaft protruding from the rotating frame is fitted into the elongated hole formed in the base frame along a direction substantially perpendicular to the moving direction of the chassis. As the chassis moves, the pivot shaft moves in the elongated hole, so that the outer-peripheral rotation trajectory of the rotating frame substantially coincides with the outer-peripheral-side movement trajectory of the chassis. The turntable supported by the chassis is positioned concentrically with respect to the center hole of the disc carried into the base frame, without being pushed and pushed by the rotating frame. Thus, the disc can be reliably chucked by the turntable and the disc pressing member.

According to the second aspect of the present invention, the pivot shaft protruding from the base frame is inserted into the slot formed along the direction substantially perpendicular to the moving direction of the chassis. Therefore, the disk can be reliably chucked by the turntable and the disk pressing member by the same operation as the invention of the first aspect.

According to the present invention, when the rotating frame is rotated forward, the rotating frame is guided in a direction away from the chassis along the inclined surface, so that the chassis is disc-shaped. The disc can be reliably chucked by forcibly approaching the pressing member side.

According to the present invention, when the rotating frame is reversed, the tip of the rotating frame is brought into contact with the chassis to forcibly separate the chassis from the disc holding member. As a result, the chucking can be reliably released.

According to the invention described in claim 5, the cam follower provided at the distal end of the rotating frame is located near the center of the base frame, so that the cam engaged with the cam follower can be reduced in size. Can be

According to the present invention, the cam follower provided at the rear end of the rotating frame is located closer to the outside of the base frame, so that the cam can be easily engaged with the cam follower. Can be combined.

According to the invention of claim 7, it is possible to reliably chuck a desired disk selected from a large number of disks and carried into the base frame on the cart.

[Brief description of the drawings]

FIG. 1 is a horizontal cross-sectional view of a chucking mechanism showing a released state of chucking of a disc autochanger according to an embodiment of the present invention.

FIG. 2 is a plan view of a lower portion of the chucking mechanism.

FIG. 3 is a horizontal sectional view of the chucking mechanism showing the chucking state.

FIG. 4 is a plan view of a lower portion of the chucking mechanism.

FIG. 5 is an exploded perspective view of the chucking mechanism.

FIG. 6 is an explanatory diagram showing an operation principle of the chucking mechanism.

FIG. 7 is a horizontal sectional view showing a chucking release state in a modified example of the chucking mechanism.

FIG. 8 is a horizontal sectional view showing a chucking state in a modified example of the chucking mechanism.

FIG. 9 is a longitudinal sectional view of the entire disc autochanger.

FIG. 10 is a horizontal sectional view of the entire disc autochanger.

FIG. 11 is a longitudinal sectional view showing a chucking release state in a conventional example.

FIG. 12 is a longitudinal sectional view showing the chucking state.

FIG. 13 is an explanatory diagram showing an operation principle of the chucking mechanism.

[Explanation of symbols]

 Reference Signs List 10 turntable 12 disk pressing member 17 cart 18 base frame 20 chucking mechanism 50 chassis 51a to 51d damper 52 long hole 53 rotating frame 54 pivot shaft 58 cam plate (rotation driving means) 61 cam follower 63a inclined surface 64 Contact part D disk

Claims (7)

[Utility model registration claims] An end of a chassis supporting a turntable is rotatably connected to a base frame via a damper, and is rotatably supported by the base frame via a pivot shaft. Is connected to the other end of the chassis via a damper, and by rotating the rotation frame forward by a rotation driving means to bring the chassis closer to a disc holding member supported by the base frame, In a disk player in which a disk is chucked by a disk pressing member and the turntable, the pivot is projected from the rotating frame, and the pivot is attached to the base frame by a moving direction of the chassis. A disc player fitted in a slot formed along a direction substantially perpendicular to the disc player. 2. A rotating frame rotatably connected to a base frame via a damper at one end of a chassis supporting the turntable, and rotatably supported by the base frame via a pivot shaft. Is connected to the other end of the chassis via a damper, and by rotating the rotation frame forward by a rotation driving means to bring the chassis closer to a disc holding member supported by the base frame, In a disk player in which a disk is chucked by a disk pressing member and the turntable, the pivot is projected from the base frame, and the pivot is attached to the rotating frame by a moving direction of the chassis. A disc player fitted in a slot formed along a direction substantially perpendicular to the disc player. 3. An inclined surface for guiding the rotating frame in a direction away from the chassis along the elongated hole when the rotating frame is rotated forward and the chassis approaches the disc pressing member. The disc player according to claim 1, wherein the disc player is provided on the base frame. 4. When the rotating frame is reversed and the chassis is separated from the disk pressing member, a tip end of the rotating frame is brought into contact with the chassis. Item 4. The disc player according to any one of Items 1 to 3. 5. The rotating drive means comprises a cam capable of reciprocating within a predetermined range, and a cam follower provided at a tip end of the rotating frame is engaged with the cam. The disc player according to claim 1. 6. The rotation driving means comprises a cam capable of reciprocating within a predetermined range, and a cam follower provided at a rear end of the rotation frame is engaged with the cam. The disc player according to any one of claims 1 to 4. 7. The disc player according to claim 1, wherein said base frame is mounted on a truck of a disc auto changer.