JPH01220257A - Loading/unloading device for disk - Google Patents

Abstract

PURPOSE:To stably perform the lifting operation of a spindle motor without generating deviation in the perpendicularity of the spindle motor and dislocation in a shaft center by guiding the spindle motor so as to be lifted coaxially by a sleeve, and lifting the spindle motor by interlocking with the disk insertion/ ejection operation of a disk carrying means. CONSTITUTION:The spindle motor 21 is raised by one end of a lever body 70 being turned via a cam mechanism after a cartridge holder is moved rearward horizontally to a position corresponding to the disk loading position by the driving force of a loading motor 50, and is moved upward by the guidance of the sleeve 20. Thus, a turntable 30 is raised with the upward movement of the spindle motor 21, and a disk loaded in a disk cartridge is transferred on the turntable 30, and the disk is held at a rotational position in the center of the disk cartridge by attraction between a disk clamper mounted in the disk cartridge and a magnet on the upper end of the turntable 30.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a disk loading/unloading device in an optical disk player such as a CD (compact disk) player.

BACKGROUND ART In disc players such as CD players, a horizontal loading method in which a disc is loaded and ejected from a turntable in a horizontal direction from the front of the cabinet is generally widely adopted. ing.

In the loading method of this type of disc player, the tray on which the disc is placed is moved forward and backward of the cabinet, and is inserted and ejected deep inside the cabinet, and the disc cartridge containing the disc in advance is moved inside the cabinet. Two methods are known: one is to insert and eject the cartridge into a loading position while being housed in the cartridge via a cartridge holder.

In both tray-type and cartridge-type disk loading methods, the conventional disk loading operation is to move the disk horizontally from the front of the cabinet to a position corresponding to the disk loading position deep inside the cabinet by driving the disk transport means. At that position, the transfer means is lowered, and the disk is transferred onto a turntable located below the transfer means. The disc is then clamped and held on the turntable by a disc clamper.

In this loading method, when a disc is to be ejected, the transport means is first raised to remove the disc from the turntable, and then the disc is sent out along a horizontal path to the front of the cabinet.

As described above, conventional disk loading and unloading devices, regardless of whether they are tray-type or cartridge-type, move the disk horizontally back and forth, and move the disk in parallel vertically up and down at the disk loading position. A format is adopted in which the discs are transferred in two directions, horizontally and vertically up and down, and loaded onto and unloaded from the turntable.

Problems to be Solved by the Invention However, the above-mentioned conventional disk loading/unloading device has the following problems:
Since the transport means for transporting the disc is lowered or raised vertically in the vertical direction at the loading position to transfer and remove the disc from the turntable, it is necessary to secure a large movement space in order to move the disc in the vertical direction. was there.

Therefore, in addition to the space for arranging the drive mechanism of the transfer means, a space for vertically moving the disk is required for transferring the disk, which increases the space required for loading and unloading the disk, resulting in a very large space loss. This has been an obstacle in making disc players smaller and more compact.

Therefore, the inventor proposed a method in which a spindle motor that supports a turntable for loading a disk is moved up and down, and the disk that has been transferred to a position corresponding to the disk loading position is transferred onto the turntable and removed. has been proposed.

With this method, the vertical movement mechanism of the spindle motor can be built into the installation space of the drive mechanism, which has large dimensional restrictions in the height direction, and the movement space for the disk can be minimized to allow the disk to be mounted on the turntable. Transfer·
You can leave.

However, on the other hand, in the method of moving the spindle motor up and down, compared to the disk transfer method in which the spindle motor is fixedly arranged and the disk is raised and lowered on the turntable, it is necessary to assemble the spindle motor in a movable manner. Due to accumulation of assembly errors, etc.
A new problem has arisen in that the perpendicularity of the motor shaft tends to shift and the shaft center shifts in the horizontal direction.

The present invention has been proposed in view of the above points, and is intended to minimize the space required for loading and unloading discs, thereby making the disc player smaller and more compact, and to reduce the vertical deviation of the motor shaft. The purpose of the present invention is to provide stable lifting and lowering operations without causing displacement of the axis in the plane direction.

Means for Solving the Problems The present invention provides a disk transfer means for placing a disk, inserting it in a horizontal path from the front of the cabinet to a loading position at the back of the cabinet, and ejecting the disk, and a disk transfer means for loading the disk. A drive means that drives in the input/Φ ejection direction, and a disk loading/unloading operation of the disk transport means driven by the drive means when the disk is transported to a position corresponding to a loading position or ejected by the disk transport means. The main component is a motor vertical movement means for vertically raising or lowering a spindle motor that supports a turntable in conjunction with the turntable.

The motor housing of the spindle motor is attached to a cylindrical sleeve, and the sleeve guides and moves the motor housing up and down.

Further, the spindle motor is moved in the vertical direction via a lever body that is rotated in the vertical direction.

The lever body is supported on one side of the spindle motor so as to be movable up and down, and acts in a direction to move the spindle motor up and down. The lever body is biased in one direction of rotation by the bias of the spring, and is rotated in the other direction by the cam action of the cam means against the bias of the spring means. The cam means is configured to perform a cam operation in conjunction with the driving operation of the drive means, and the lever body is configured to rotate up and down in conjunction with the operation of the cam means.

Furthermore, the present invention provides a cam plate in which a cam path extending from a small diameter portion to a large diameter portion is formed on one surface of a rotatably supported disc body, and a cam groove extending in the circumferential direction is formed in the large diameter portion; A plate that is engaged with the cam groove of this cam plate and is moved left and right by the stroke from the small diameter part to the extended end of the cam path of the large diameter part by the rotation of the cam plate, and a plate that is formed on one surface of this plate and is moved vertically. and a cam body forming an inclined path with steps,
A configuration is adopted in which the spindle motor is moved up and down by the lever body through the cam movement of the cam body caused by the left and right movement of the plate body. The cam plate constitutes a part of the reduction gear train of the drive means, and when the cam plate rotates forward and backward, the plate body is guided by the cam groove and can move left and right. The lever body is connected to a reduction gear train of the drive means via a cam means having a cam plate as a component.

As the cam plate forming the cam groove, the cam groove may be formed on a gear assembled to the driving means so that the cam plate also serves as the transmission gear.

The disk transport means is moved in the disk insertion direction by driving the action drive means, and the disk is transported to a position corresponding to the disk loading position. After this, the driving means is further driven. In conjunction with this drive, the motor vertical movement means is moved, and the spindle motor is guided by the sleeve and lifted vertically upward. As a result, the turntable supported by the shaft of the spindle motor is raised,
The disc is transferred onto the turntable.

On the other hand, when ejecting the disk, the drive means is driven in reverse, and the spindle motor is lowered while being guided by the sleeve by the motor vertical movement means. As a result, the disc is removed from the turntable. After this, the driving means is further driven in the reverse direction. As a result, the disk transport means is moved in the disk ejection direction, and the disk is ejected to the front surface of the cabinet.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 to 6 show a disk loading/unloading device for a disk player according to the present invention.

An opening window 100 for inserting and ejecting disks is formed on the front surface of the cabinet 10. A chassis 11 with a disk loading/unloading device assembled is disposed behind the opening window 100.

A cylindrical sleeve 20 is attached to the chassis 11 coaxially with the center of the disk loading position.

A spindle motor 21 is mounted on the sleeve 20 so as to be slidable in the vertical direction.

A motor housing 22 of the spindle motor 21 is formed into a cylindrical shape, and a flat plate portion 222 is formed at the bottom of the cylindrical portion 221 . The motor housing 22 is connected to the sleeve 2
0 so that it can move up and down. Motor housing 2
A spring 23 is installed between the motor housing 22 and the sleeve 20 and acts in a direction to push the motor housing 22 downward. The cylindrical portion 221 of the motor housing 22 includes
A spindle shaft 25 is mounted to protrude vertically through bearings 24,24. A stator 27 mounted on a printed circuit board 26 around the spindle shaft 25 is attached to the lower surface of the motor housing 22 . On the other hand, a rotor 28 is supported at the lower end of the spindle shaft 25 in close correspondence with the stator 27.

A pair of left and right frames 223, 223 are provided on the flat plate portion 222 of the motor housing 22 to protrude upward. This frame 223.223 has pins 224.22, respectively.
4 is attached so as to protrude outward from the left and right. Furthermore, the flat plate portion 222 is formed slightly larger on one side. A slit hole 225 is formed at one end of this flat plate portion 222 . Bearing members 2 are provided on the left and right edges of the slit hole 225.
26 is installed. On the other hand, this slit hole 225
A guide shaft 111 projecting downward is provided on the chassis 11 facing the guide shaft 111 . The slit hole 225 is fitted into the guide shaft 111 so that the motor housing 22 is regulated in the rotational direction and guided in the vertical direction along the sleeve 20.

On the other hand, the upper end of the spindle shaft 25 protrudes above the chassis 11. At the upper end of the spindle shaft 25,
A turntable 30 is attached. A truncated cone-shaped center hub 31 is attached to the center of the turntable 30 so as to protrude upward via a spring 23.

The center hub 31 is mounted on the spindle shaft 25 so as to be movable up and down. A magnet 33 is attached to the tip of the spindle shaft 25.

A pair of support plates 40.4 are provided on the left and right sides of the chassis 11.
0 is set up. A pair of front and rear guide holes 401.401 are formed symmetrically in the support plate 40.40. The guide hole 401 is long in the front-rear direction and is formed in an abbreviated shape with the rear end facing downward. Between this supporting plate) 40140 is a disc cartridge holder 4.
1 is provided. The cartridge holder 41 supports a pair of front and rear rollers 411 on the left and right sides.

The cartridge holder 41 is supported between the support plates 40, 40 by attaching rollers 411... to the guide holes 401, and is movable in the front and back direction along the guide holes 401...・It is supported so that it can move up and down at the rear end.

On the left and right sides of the support plate 40, there are movable plates 4.
2.42 is supported so as to be movable in the front-back direction. The moving plates 42 and 43 each have a pair of guide holes 4 in the front and rear.
2L421 is formed.

The guide hole 421 (fist) is long in the front-rear direction and is bent obliquely upward from its rear end. The guide holes 421 of the moving plate 40 correspond to the guide holes 401 of the support plate 40, respectively, and the bent rear end of the guide hole 421 corresponds to the long hole in the front and rear direction of the guide hole 401, and the guide hole 401 corresponds to the guide hole 401 of the support plate 40. The long hole of the hole 421 corresponds to the bent lower end of the guide hole 401. The rollers 411 of the cartridge holder 41 are fitted into the guide holes 421 of the moving plate 420 through the guide holes 401 of the support plate 40.

Rack teeth 422 are formed at the rear end of the moving plate 40.40. On the other hand, a shaft 43 is supported at the rear part of the chassis 11. Gears 4 are provided at both ends of the shaft 43.
4.44 is installed. The gears 44.44 are meshed with rack teeth 422.422 of the left and right moving plates 42.42, respectively. As a result, the moving operation of one moving plate 42 causes the movement of the other moving plate 42.
are now moved synchronously.

On the other hand, a loading motor 50 is disposed at the lower front portion of the chassis 11. A worm gear 51 is attached to the shaft of the loading motor 50. A worm wheel 52 is engaged with the worm gear 51 . A gear 53 is supported coaxially with the worm wheel 52.

A large diameter gear 54 is meshed with the gear 53. A small diameter gear 55 is coaxially supported by the large diameter gear 54.

An intermediate gear 56 is meshed with the small diameter gear 55, and a pinion gear 57 is meshed with the intermediate gear 56.

This pinion gear 57 is meshed with a rack 58 attached to one of the moving plates 42.

The driving force of the loading motor 50 is driven by the worm gear 51
, worm wheel 52, gear 53, large diameter gear 54, small diameter gear 55, intermediate gear 56, pinion 57, rack 58
is transmitted to the moving plate 42 via.

A cam groove 60 is formed on the upper surface of the large diameter gear 54 of this loading drive system.

The cam groove 60 is formed long in the circumferential direction on the upper surface of the gear 54, and forms a groove that approaches the center in an oblique direction from one end of the cam groove, and a circumferential groove with a smaller diameter extends short from the groove end. It is formed. A fan cam plate 61 is supported on the lower surface of the chassis 11 on one side of the large-diameter gear 54 so as to be rotatable in the left-right direction. A pin 611 is provided on one of the rotation ends of the cam plate 61 and protrudes downward. The pin 611 is fitted into the cam groove 60.

As a result, when the gear 54 is rotated, the pin 611 is guided to the cam groove 60 and guided along the cam path from the large diameter groove to the small diameter groove at a position inclined toward the radial center of the cam groove 80. It is designed to be rotated left and right by the stroke of the cam path.

On the other hand, a cam body 62 having an inclined step formed in the rotation direction is attached to the other rotation end of the cam plate 61.

On the other hand, a lever body 70 is supported on the lower surface of the chassis 11 on one side of the spindle motor 21 so as to be rotatable in the vertical direction. The tip of the lever body 70 is extended into a fork shape and has pins 224.2 protruding from the left and right sides of the motor housing 22.
It corresponds to the lower side of 24. A spring 71, 71 is suspended between the lever body 70 and the chassis 11.

The lever body 70 is constantly pulled up in the direction of upward rotation by springs 71,71.

The force of the springs 71, 71 causes the spindle motor 21 to be lifted up via the lever body 70 to the upward movement position.

A pin 72 is provided on the lever body 70 in an upwardly protruding manner at an intermediate portion corresponding to a straight line direction perpendicular to the six middle axes of the spindle motor 21 . The pin 72 is connected to the cam plate 61
The cam body 62 is in corresponding contact with the inclined step formed on the cam body 62.

Thereby, when the cam plate 61 is rotated, the lever body 70 is rotated downward following the inclined step of the cam body 60.

Next, the loading and unloading operations of the disk cartridge in the disk loading/unloading device having the above-described configuration will be explained.

First, the disk cartridge A is inserted through the opening window 100 on the front surface of the cabinet 10. Then, the disk cartridge A is placed in the cartridge holder 41 located behind the opening window 100. When the disc cartridge A is inserted into the cartridge holder 41, the load-in start switch located deep inside the cartridge holder 41 is operated, and the load-in start switch is turned ON.
can be switched to the state. The loading motor 50 is rotationally driven by the ON signal.

The driving force of the loading motor 50 is driven by the worm gear 51
, the worm wheel 52, the gear 53, the large diameter gear 54, the small diameter gear 55, the intermediate gear 56, and the pinion 57 to the rack 58, and one moving plate 42 is moved rearward. At the same time, a gear 44 is rotated via rack teeth 422 formed at the rear of one moving plate 42, and the other gear 44 coaxial with this gear 44 is rotated. By the rotation of the other gear 44, the other moving plate 4
2 is moved to the rear inside the cabinet in synchronization with one of the moving plates 42. In this way, the loading motor 5
By the drive of 0, left and right movement play) 42.42 is moved backward.

When the moving plate 42, 43 is moved backward, the cartridge holder 41 supported between the support plates 40, 40 moves backward along the guide holes 401 of the support plate 40 via the rollers 411... will be guided to. When the rollers 411...φ reach the rear end of the guide hole 401,
The cartridge holder 41 is stopped at that position.

At this time, the center of the disk cartridge A inserted and held in the cartridge holder 41 is aligned with the spindle motor 21.
The disc loading position is aligned with the central axis of the disc.

From this state, the loading motor 50 is further rotated. Then, with the cartridge holder 41 being restricted in its rearward position, the movable players 42 and 42 are moved rearward. Then, the rollers 411... are regulated backward and move through the guide holes 421 of the moving plate 42.
... is guided along the inclined part, and is moved downward along the vertical part to the rear end of the guide hole 401 of the support plate 40.

As a result, the cartridge holder 41 is moved vertically downward and in parallel. The roller 41... is the guide hole 42
1, the cartridge holder 41 is held in that position and the cartridge holder 41 is moved downward along the inclined part 1 (movement play).
42. Only 42 is moved rearward along the horizontal hole of the guide hole 421.

When the moving plate 42.42 moves to a predetermined backward movement position, a switch disposed on the forward and backward moving path of the moving plate 42 is operated, and the driving of the loading motor 50 is stopped.

As mentioned above, the guide holes 4 in the support plate 40.40
The horizontal part of 01... and the horizontal part of the guide hole 422@... of the moving plate 42.42 are made in a vertically shifted relationship,
By slightly moving the cartridge holder 41 downward due to the relationship between the inclined portions of the guide holes 422 and the vertical portions of the guide hole 401, the cartridge holder 41 is regulated and held in the front and rear directions, and the loading motor 50
The cartridge holder 41 can be driven further than the longitudinal movement stroke of the cartridge holder 41.

On the other hand, when the cartridge holder 41 is being moved horizontally backward by the driving of the loading motor 50,
The pin 61 of the cam plate 61 is connected to the cam groove 6 of the large diameter gear 54.
The cam plate 61 is located at a circumferential position with a large diameter of 0.
is regulated in position in the left and right direction. The cam body 62 attached to the cam plate 61 has a step at its lower end, and a pin 72 of a lever body 70 is in contact with one end thereof.

As a result, the lever body 70
is pushed down against the elastic force of

At this time, the spindle motor 21 is located in a downward position.

Then, by driving the loading motor 50, the cartridge holder 41 is moved into the guide hole 40 of the support plate 40.
1... is moved to the rear end of the disk cartridge A.
When the pin 611 of the cam plate 61 is moved to a position corresponding to the disk loading position, or slightly later, the pin 611 of the cam plate 61 engages the bent portion of the cam groove 60 that transitions from the large diameter portion to the small diameter portion. Then, the pin 611 is guided along the cam groove 60 in the direction of the central axis of the large diameter gear 54. As a result, the cam plate 61 is rotated following the cam path, and the cam body 62 is moved relative to the pin 72 of the lever body 70. Then, the pin 72 is removed from the lower part of the cam body 62 and moves along the inclined step part. Then, the lever body 70 is rotated upward by the elastic restoring force of the springs 71.71. The lever body 70 has its pin 72
The cam body 62 is rotated upwardly following the inclined step portion by the contact action following the inclined step portion. This lever body 70
By this rotational movement, the spindle motor 21 is guided by the sleeve 20 and lifted upward.

When the pin 611 of the cam plate 61 reaches the small diameter circumferential groove of the cam groove 60, the loading motor 50
The moving plate 42 that is being moved operates the load stop switch, and the loading motor 50 is stopped.

On the other hand, the lever body 70 is stopped from rotating near the rotation end of the cam plate 61 by the upward position restriction of the spindle motor 21, and the pin 72 of the lever body 70 and the cam body 62 of the cam plate 61 are slightly separated with a clearance of

As described above, the spindle motor 21 moves the cartridge holder 41 by the driving force of the loading motor 50.
After the lever body 70 is moved horizontally backward to a position corresponding to the disk loading position, the lever body 70 is rotated via a cam mechanism.
It is lifted by one end of the sleeve 20 and moved upward while being guided by the sleeve 20. In this way, the turntable 30 is raised with the upward movement of the spindle motor 21, and the disc D mounted in the disc cartridge A is moved onto the turntable 3.
The disk D is held at a rotatable position in the center of the disk cartridge A by attraction between the disk clamper a installed in the disk cartridge A and the magnet 33 at the upper end of the turntable 30. In this way, the loading and setting of the disc D onto the turntable 30 is completed.

Next, to eject the disc cartridge A, the user operates the eject button on the operation panel of the disc player. Then, the loading motor 50 is driven in the opposite direction to that described above, and the disk loadout operation is started. By the driving force of the loading motor 50, the moving plate 42, 42 is moved to the front side of the cabinet via a gear system. At this time, the moving plate 42.42
Since the horizontal portions of the guide holes 421 correspond to the rollers 411 of the cartridge holder 41, the cartridges are fed horizontally. At the same time, the rotation of the large-diameter gear 54 guides the pin 611 of the cam plate 61 along the cam groove 60 in the opposite direction to that described above. Then, the cam plate 61
is rotated in the opposite direction to the aforementioned load-in, following the radial size difference of the cam groove 60. Then, the inclined stepped portion of the cam body 62 of the cam plate 61 comes into contact with the pin 72 of the lever body 70, and acts in a direction to push down the pin 72 following the inclined surface. Then, the lever body 70 becomes
It is rotated downward against the biasing force of springs 71 and 71. When the pin 611 of the cam plate 61 is guided to the large diameter groove on the outer circumferential side of the cam groove 60, the cam plate 61 stops rotating, and the pin 72 of the lever body 70 and the lower stage of the cam body 62 are aligned. and then separated. At the same time, the spindle motor 21 descends due to its own weight. At this time, a force in the downward direction is applied by the spring 23 disposed between the rotor housing 22 and the sleeve 20, and the downward force of the downward movement of the spindle motor 21 is reinforced.

During this time, the moving plates 42, 42 are being moved forward by the driving of the loading motor 50. When the inclined portions of the guide holes 421 of the moving plates 42.42 correspond to the rollers 411 of the cartridge holder 41, the rollers 411... are guided along the inclined portions, and the guide holes 401 of the support plates 40.40 align with the rollers 411 of the cartridge holder 41. is moved in one direction along the vertical part of... The roller 411 is a hole 4
When moved to the upper moving end of 01, at the same time, move play)
42. Corresponds to the rear end of the guide hole 421/fist of 42.

Next, the cartridge holder 41 is moved (moving play) 42
．． 42, the roller 411/fist is sent forward while being guided by the horizontal part of the guide hole 401 of the support plate 40.40. As a result, the disk cartridge A held in the cartridge holder 41 is ejected forward through the opening window 100 on the front surface of the cabinet.

When a certain amount of disk cartridges A are ejected to the front of the cabinet, a loadout stop switch provided at the front of the moving path of the moving plate 42 is operated, and the loading motor 50 is stopped. After this, it is sufficient to pull out the disk cartridge A from the cabinet IO. In this way, the loadout of the disk cartridge A is completed.

In the above embodiment, a device is described in which a disk cartridge containing a disk is loaded and unloaded in the stored state, but a system in which a tray is placed on the front of the cabinet and a disk is placed on this tray is also applicable. The present invention can be applied with the same configuration as above.

Effects of the Invention According to the present invention, the spindle motor is guided by the sleeve so that it can move up and down coaxially, and the spindle motor is raised and lowered in conjunction with the disk loading and unloading operations of the disk transfer means. Stable ascending and descending operations of the motor can be obtained without causing deviations in the verticality of the motor and deviations in the position of the axis. Therefore, the disk can be stably and smoothly loaded and unloaded into the 9-7+- pull.In addition, compared to the conventional method in which the disk is loaded and unloaded by raising and lowering it, the space required for loading and unloading the disk, especially in the vertical direction, is can be made much smaller, and the player can be made thinner.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view of a disk player to which a disk loading/unloading device according to the present invention is applied, FIG. 2 is a cross-sectional view showing the support state of the spindle motor, and FIG. 3 is a perspective view showing an example of the configuration of the disk transport means. 4 is a plan view showing an example of the structure of the driving means, FIG. 5 is a side view showing an example of the structure of the vertical moving means of the motor, and FIG. 6 is a plan view thereof. DESCRIPTION OF SYMBOLS 10... Cabinet, 11... Chassis, 20... Sleeve, 21... Spindle motor, 22... Motor housing, 58... Rack, A... Disk cartridge.

Claims (9)

[Claims] (1) A horizontal disk transport means for placing a disk, inserting it in a horizontal path from the front of the cabinet to a loading position at the back of the cabinet, and ejecting the disk; and a drive means driven by the disk transfer means, and when the disk is transported to a position corresponding to a loading position or ejected by the disk transfer means, the drive means is interlocked with the disk loading/unloading operation of the disk transfer means driven by the drive means. A disk loading/unloading device comprising a motor vertical movement means for vertically raising or lowering a spindle motor supporting a turntable. (2) A cylindrical sleeve is disposed coaxially with the axis of the spindle motor, a motor housing of the spindle motor is attached to this sleeve, and the spindle motor is guided and moved in vertical up and down directions via the sleeve. A disk loading/unloading device according to claim (1). (3) A lever body that is rotatably supported in the vertical direction on one side of the spindle motor and acts in a direction to move the spindle motor up and down, and a lever body that is biased in one direction of rotation. It is composed of a spring means and a cam means that acts in a direction to rotate the lever body in the other direction against the biasing force of the spring means, and the cam means is movable in conjunction with the driving operation of the driving means. 3. The disk loading/unloading device according to claim 1, wherein said lever body is vertically rotated via said cam means. (4) a cam plate having a cam path extending from a small diameter portion to a large diameter portion on one surface of a rotatably supported disc body, and in which the cam path in the large diameter portion forms a cam groove extending in the circumferential direction; A plate body is engaged with the cam groove of this cam plate and is moved left and right by the stroke from the small diameter part to the extended end of the cam path of the large diameter part by rotation of the cam plate, and Claim (1), further comprising: a cam body forming an inclined path with steps in the direction, and the spindle motor is moved up and down through the cam movement of the cam body caused by the left and right movement of the plate body. The disk loading/unloading device according to (2) or (3). (5) The drive means includes a drive source and a reduction gear train that transmits the forward and reverse driving force of the drive source to the disk transfer means and operates the disk in the inserting/ejecting direction, and the lever body is the cam means. The disk loading/unloading device according to claim 3 or 4, wherein the disk loading/unloading device is connected to the reduction gear train via. (6) The cam plate has a gear that constitutes a part of the reduction gear train, and the plate body is guided by the cam path of the cam groove and moves left and right by the forward and reverse rotation of the gear. The disk loading/unloading device according to (4) or (5). (7) The lever body has a cam follower that follows the inclined path of the cam body formed on one surface of the plate body, and moves up and down in conjunction with the horizontal movement of the plate body and follows the inclined path of the cam body. Claims (3), (4), (5) or (
6) The disk loading/unloading device described above. (8) The motor housing is constantly urged in the downward return direction by a spring, and is connected to one end of the lever body so as to be able to come into contact with and be separated from the motor housing, and resists the spring in conjunction with the vertical rotation of the motor housing. Claims (3), (4), and (5) are guided and supported by the sleeve so as to rise or fall.
, (6) or (7). (9) The disk loading/unloading device according to claim (8), wherein the motor housing is provided with a restricting means around the axis.