JP3128446B2 - Disk playing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk performance in which one disk is selected from a disk storage portion for storing a plurality of disk-shaped information recording media (hereinafter, referred to as disks) and the disk is played. Related to the device.

[0002]

2. Description of the Related Art In recent years, as a disk playing device, one disk is selected from a plurality of disks stored and held in a disk storage section, taken out, and the disk is conveyed to disk playing means for performing. A device has been proposed.

[0003] As an example of this type of disk playing device,
There is a multi-loading disk automatic performance apparatus disclosed in Japanese Patent Application Laid-Open No. Hei 4-27057. In this multi-load automatic disk playing apparatus, when a performance is started, a tray on which a desired disk is mounted is transferred from a rack in which a plurality of trays on which the disks are mounted is stored by a tray drawer to the disk. Pull on the means, clamp the disc and return the empty tray to the rack again. The clamped disk is transported by the disk transport means before the disk playing unit. When transported there,
The tray in the disk playing unit is pulled out onto the disk transport means by the tray pulling means, and the disk is placed on the tray. Then, the tray on which the disc is placed is returned into the disc playing unit by the tray drawing means, and the playing of the disc is started.
When the performance of the disc is completed, the disc is returned to the tray in the rack by performing the operation reverse to that at the start of the performance.

[0004]

However, in the above-mentioned conventional configuration, since there is a large difference between the operating load at the time of ascending and the operating load at the time of descent in the carrying operation of the disk carrying means, the carrying operation of the disk carrying means is driven. There is a problem that a large motor is required because the drive motor to be selected is selected according to the operating load at the time of ascent. Also, there is a large difference between the ascending operation and the descending operation in the positioning controllability when the disk carrying means moves the tray on which the disks are loaded to the desired position of the rack in which a plurality of disks are stored or the disk playing unit, and performs positioning. Therefore, there is a problem that separate control methods are required for the ascent operation and the descent operation, respectively.

An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a disk playing device capable of balancing the operation load when the disk transport means is raised and lowered.

[0006]

SUMMARY OF THE INVENTION To achieve this object, a disk playing apparatus according to the present invention comprises a balancer gear rotatable and engageable with a transport drive for driving a disk transport means, and a spring at a fixed position. An engaging portion, a balancer gear spring engaging portion provided on the balancer gear, and a balancer spring attached between the spring engaging portion and the balancer gear spring engaging portion are provided.
The driving force of the balancer spring is directly used as the driving force of the transport drive unit , and the rotation of the balancer gear causes the balancer spring to rotate.
Provide a contact part to contact, and load direction by balancer spring
Is changed .

[0007]

[0008]

According to the present invention, the driving force of the transport drive unit is acted in the direction to assist the lifting of the disk transport means by the spring force of the balancer spring, and the disk transport means is lowered when the disk transport means is lowered. Thus, a load can be balanced between the ascending operation and the descending operation by providing a load to the descending operation.

Further, by rotating the balancer gear to bring the contact portion between the balancer spring and the balancer gear into contact with each other, the load direction by the balancer spring is changed to change the rotating power of the balancer gear. It can be easily taken.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a disk playing device according to one embodiment of the present invention, and FIG. 2 shows a state of a balancer gear and a balancer spring when a transport unit is located at the lowest position in the disk playing device according to one embodiment of the present invention. FIG. 3 is a plan view showing the state of the balancer gear and the balancer spring when the conveying unit is located at the intermediate portion. FIG. 4 is a diagram showing the state of the balancer gear and the balancer spring when the conveying unit is located at the uppermost position. It is a top view.

In FIG. 1, reference numeral 1 denotes a storage unit for storing a plurality of disks, and 2 denotes a disk conveying means which is guided by a guide shaft 3 and moves up and down along the storage unit 1;
Reference numeral 4 denotes a transport drive unit for moving the disk transport means 2 up and down. The transport drive unit 4 includes a drive motor 5, a motor pulley 6 coupled to an output shaft of the drive motor 5, a power transmission belt 7 associated with the motor pulley 6 and the worm pulley 8, and a transmission shaft 10 on the worm pulley 8. The worm 9 connected to the worm 9 and the first worm 9
And a second connecting gear 12 connected to the first connecting gear 11 by a connecting shaft 14.

The first and second connecting gears 11 and 12 are
Each of the pulleys is engaged with the first pulley 15 to transmit power. A second pulley 16 is provided above the first pulley 15. 17 is stretched.

The transport drive unit 4 is provided with a balancer gear 18. This balancer gear 18 has a fan shape,
The base portion is pivotally mounted so as to be freely rotatable horizontally, and the meshing teeth 18a are continuously provided on the upper surface of the arc portion at the tip edge,
The meshing teeth 18 a mesh with the balancer gear meshing portion 13 of the second connection gear 12. The balancer gear 18 is provided with a balancer gear spring engaging portion 19, and a balancer spring 22 is provided between the balancer gear spring engaging portion 19 and a spring engaging portion 21 located near the base of the balancer gear 18. Further, a contact portion 20 is provided on the upper surface of the balancer gear 18 so as to correspond to a side portion of the balancer spring 22.

The operation of the disk playing device configured as described above will be described below. When a disc is mounted on the disc transport means 2 and transported from the lower part to the upper part of the storage part 1, the power of the drive motor 5 of the transport drive part 4 is transmitted from the motor pulley 6 to the power transmission belt 7, the worm pulley 8, the transmission shaft 10, the worm 9 via the first connecting gear 1
1 and the second connecting gear 12 via the connecting shaft 14.
Is transmitted to. The first connecting gear 11 and the second connecting gear 12 are connected to a lifting belt 17 via a first pulley 15.
Is driven to move the disk transport means 2 connected to the lifting belt 17 up and down. The balancer gear meshing portion 13 of the second connection gear 12 meshes with the balancer gear 18 and rotates the balancer gear 18.

As shown in FIG. 2, the balancer spring 22 increases the spring force F1 in accordance with the rotation of the balancer gear 18, as well as the spring force F1 of the balancer spring 22, the rotation center of the balancer gear 18, and the spring force F1. The rotation force F2 of the balancer gear 18 determined by the relationship with the angle A formed by the load direction is generated, and a rotational force in a direction that assists the lifting of the disk transport means 2 is added to the second coupling gear 12. When the disk transport means 2 moves to the vicinity of the upper part of the storage section 1, the contact portion 20 of the balancer gear 18 and the balancer spring 22
Abuts and changes the direction of the spring force F1 of the balancer spring 22 so that the spring force F1 of the balancer spring 22 and the balancer gear 18
The rotation power F2 of the balancer gear 18, which is determined by the relationship between the center of rotation and the angle A formed by the load direction of the spring force F1, is changed. FIG. 3 shows the state of the balancer gear 18 and the balancer spring 22 when the transporting unit 2 is located at the middle part of the elevation,
FIG. 4 shows the balancer 18 when the conveying means 2 is in the raised position.
And the state of the balancer spring 22.

As described above, according to the disk playing apparatus of the embodiment of the present invention, the relationship between the spring force F1 of the balancer spring 22 and the angle A formed by the rotation center of the balancer gear 18 and the load direction of the spring force F1. Since the rotating power F2 of the balancer gear 18 determined is made to work in a direction to assist the ascending operation of the disk transport means 2, the ascending operation is assisted when the disk transport means 2 is raised, and when the disk transport means 2 is lowered. In this case, the load of the lowering operation is provided, so that the load of the raising operation and the lowering operation of the disk transport means 2 can be balanced. In addition, the rotation of the balancer gear 18 causes the contact portion 20 of the balancer spring 22 and the balancer gear 18 to come into contact with each other, thereby changing the direction of the spring force F1 of the balancer spring 22 and changing the rotational power F2 of the balancer gear 18. Thus, the load balance between the raising operation and the lowering operation of the disk transport means can be easily achieved.

[0017]

As is apparent from the above description of the embodiment, the present invention provides a balancer gear which meshes with a transport driving unit,
A spring engaging portion at a fixed position, a balancer gear spring engaging portion provided on the balancer gear, a balancer spring mounted between the spring engaging portion and the balancer gear spring engaging portion, and a balancer contacting the balancer spring by rotation of the balancer gear. An abutment portion of the gear is provided, and an angle A formed by the spring force F1 of the balancer spring, the rotation center of the balancer gear, and the load direction of the spring force F1.
And the rotating force F2 of the balancer gear, which is determined by the relationship between the balancer spring and the abutment portion of the balancer spring, is brought into contact with the balancer gear by rotating the balancer gear. Since the direction of F1 is changed and the rotational power F2 of the balancer gear is changed, it is possible to easily balance the load of the ascending operation and the descending operation of the disk transport means.
It is possible to reduce the size of the drive motor for driving the transport operation of the disk transport means, and to make the transport operation positioning control method of the disk transport means the same when ascending and descending.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a disk playing device according to an embodiment of the present invention.

FIG. 2 is a plan view showing a state of a balancer gear and a balancer spring when a transport unit is located at a lowermost position in the disc playing apparatus.

FIG. 3 is a plan view showing a state of a balancer gear and a balancer spring when a transport unit is located at an intermediate portion in the disc playing apparatus.

FIG. 4 is a plan view showing a state of a balancer gear and a balancer spring when a transport unit is located at an uppermost position in the disc playing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Storage part 2 Disk conveyance means 4 Transport drive part 11 1st connection gear 12 2nd connection gear 13 Balancer gear engagement part 14 Connection shaft 15 1st pulley 16 2nd pulley 17 Elevating belt 18 Balancer gear 19 Balancer gear Spring engaging part 20 Contact part 21 Spring engaging part 22 Balancer spring

Continuation of the front page (56) References JP 7-10849 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G11B 17/22-17/30

Claims (1)

(57) [Claims] An accommodating section for detachably accommodating a plurality of discs, a disc carrying means for recording / reproducing or carrying information by mounting discs, a carrying drive section for driving the disc carrying means up and down, A balancer gear that meshes with the gear of the transport driving unit and is rotatably provided; a spring engaging portion at a fixed position; a balancer gear spring engaging portion provided on the balancer gear; the spring engaging portion; A balancer spring attached between the balancer gear spring engaging portions, wherein a driving force of the balancer spring is directly used as a driving force of the transport driving portion, and the balancer gear is rotated by the balancer gear to rotate the balancer spring.
With a contact part that comes into contact with the
A disk playing device wherein the load is balanced in the vertical direction and the transport operation range of the disk transport means by changing the direction.