JPH08161811A - Disk player - Google Patents

Abstract

PURPOSE: To make it possible to obtain the operation load balance at the time of ascent and descent of a disk transporting means by providing a disk player with a freely turnable balancer gear, balancer spring, etc. CONSTITUTION: This disk player has the balancer gear 18 which meshes with a transporting and driving section 4 for vertically moving a disk transporting means 2, a spring engaging section 21 which exists in a fixed position and a balancer gear spring engaging section 19 which is disposed at the balancer gear 18. The player has the balancer spring 22 which is mounted between the spring engaging section 11 and the balancer gear engaging section 19 and a contact section 20 of the balancer gear to be pressed to the balancer spring 22 by rotation of the balancer gear 18. As a result, the turning force of the balancer gear 18 generated by the spring force of the balancer spring 22 is acted in a direction assisting the ascending motion of the disk transporting means 2 and the balancer spring 22 is pressed to the contact part 20 of the balancer gear 18 by turning of the balancer gear 18. The load balance of the ascending action and descending action of the disk transporting means 2 is thereby obtd.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art In recent years, as a disc playing device, one disc is selected and taken out from a plurality of discs housed and held in a disc housing portion, and the disc is conveyed to a disc playing means for playing. A device has been proposed.

As an example of this type of disc playing device,
There is a multi-loading disc automatic performance device disclosed in Japanese Patent Application Laid-Open No. 4-271057. In this multi-loading automatic disc playing device, when a performance is started, a tray on which a desired disc is placed is conveyed from the rack by a tray pulling means from the rack in which a plurality of trays on which discs are placed are stored. Pull it over the means, clamp the disc and put the empty tray back into the rack. The clamped disc is conveyed by the disc conveying means in front of the disc playing unit. When transported to that location,
The tray in the disc playing unit is pulled out by the tray pulling-out unit onto the disc carrying unit, and the disc is placed on the tray. Then, the tray on which the disc is placed is returned to the disc playing unit by the tray pull-out means, and the playing of the disc is started.
Further, when the performance of the disc is finished, the disc is returned to the tray in the rack by the operation reverse to that at the start of the performance.

[0004]

However, in the above-mentioned conventional structure, since there is a large difference between the operating load when the disc transporting means moves up and the operating load when it descends, the transporting operation of the disc transporting 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 rising. In addition, the disc transport means moves to a desired position of a rack in which a plurality of discs are loaded on a tray or to a disc playing unit, and the positioning controllability at the time of positioning is greatly different between the ascending operation and the descending operation. Therefore, there is a problem that a separate control method is required for each of the ascending operation and the descending operation.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a disc playing device capable of balancing the operating load when the disc conveying means is raised and lowered.

[0006]

In order to achieve this object, a disk playing device according to the present invention comprises a balancer gear that is rotatable and meshes with a carrying drive unit that drives the disk carrying means, and a spring at a fixed position. It has a configuration in which 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.

Further, the balancer gear is provided with an abutting portion which comes into contact with the balancer spring by its rotation.

[0008]

According to the present invention having the above-mentioned structure, the spring force of the balancer spring causes the driving force of the transfer driving unit to act in the direction of assisting the upward movement of the disk transfer means, and when the disk transfer means is lowered, the disk transfer means. The load can be balanced between the ascending operation and the descending operation by providing a load for the descending operation.

Further, by rotating the balancer gear to bring the balancer spring and the contact portion of the balancer gear into contact with each other, the load direction of the balancer spring is changed to change the turning force of the balancer gear, thereby balancing the load of the ascending operation and the descending operation. 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 disc 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 conveying means in the disc playing device according to one embodiment of the present invention is located at the lowermost portion. FIG. 4 is a plan view showing a state of the balancer gear and the balancer spring when the conveying means is located at an intermediate portion, and FIG. 4 is a state showing the balancer gear and the balancer spring when the conveying means is located at the uppermost portion. It is a top view.

In FIG. 1, reference numeral 1 is a storage portion for storing a plurality of disks, 2 is a disk conveying means which is guided by a guide shaft 3 and is vertically moved up and down along the storage portion 1,
Reference numeral 4 denotes a transfer driving unit for moving up and down the disk transfer unit 2. The transport drive unit 4 has a drive motor 5, a motor pulley 6 coupled to the output shaft of the drive motor 5, a power transmission belt 7 engaged with the motor pulley 6 and a 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 that meshes with the worm 9.
And a second connecting gear connected to the first connecting gear 11 by a connecting shaft 14.

The first and second connecting gears 11 and 12 are
Each of them meshes with the first pulley 15 to transmit power, and a second pulley 16 is provided above the first pulley 15, and a lifting belt of the disc carrying means 2 is provided between the two pulleys 15, 16. 17 is suspended.

A balancer gear 18 is provided in the transport drive unit 4. This balancer gear 18 has a fan shape,
The base portion is pivotally mounted to be horizontally rotatable, and the meshing teeth 18a are continuously provided on the upper surface of the arc portion of the tip edge.
The meshing teeth 18 a are meshed with the balancer gear meshing portion 13 of the second connecting gear 12. The balancer gear 18 is provided with a balancer gear spring engagement portion 19, and a balancer spring 22 is provided between the balancer gear spring engagement portion 19 and the spring engagement portion 21 located near the base portion 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 the side portion of the balancer spring 22.

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

Here, the balancer spring 22 increases the spring force F1 as the balancer gear 18 rotates as shown in FIG. 2, and the spring force F1 of the balancer spring 22, the rotation center of the balancer gear 18, and the spring force F1. The rotational force F2 of the balancer gear 18, which is 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 disc transporting means 2 is added to the second connecting gear 12. When the disk transporting means 2 moves to the vicinity of the upper part of the storage part 1, the contact part 20 of the balancer gear 18 and the balancer spring 22.
Contact each other and change 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 turning force F2 of the balancer gear 18 which is determined by the relationship between the rotation center and the angle A formed by the spring force F1 in the load direction is changed. FIG. 3 shows a state of the balancer gear 18 and the balancer spring 22 when the conveying means 2 is located in the middle part of the lifting and lowering,
FIG. 4 shows the balancer 18 when the transport means 2 is in the raised position.
And the state of the balancer spring 22.

As described above, according to the disk playing device 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 center of rotation of the balancer gear 18 and the spring force F1 in the load direction. Since the turning force F2 of the determined balancer gear 18 is made to act in the direction of assisting the raising operation of the disc carrying means 2, when raising the disc carrying means 2, the raising operation is assisted and when the disc carrying means 2 is lowered. Since it is a load of the lowering operation, it is possible to balance the load of the ascending operation and the lowering operation of the disc transporting means 2. Further, since the balancer spring 22 and the contact portion 20 of the balancer gear 18 are brought into contact with each other by the rotation of the balancer gear 18, the direction of the spring force F1 of the balancer spring 22 can be changed to change the rotational force F2 of the balancer gear 18. It is possible to easily balance the load of the ascending operation and the descending operation of the disk carrying means.

[0017]

As is apparent from the above description of the embodiments, the present invention comprises a balancer gear that meshes with a conveyance drive unit,
A spring engagement portion in a fixed position, a balancer gear spring engagement portion provided on the balancer gear, a balancer spring mounted between the spring engagement portion and the balancer gear spring engagement portion, and a balancer that contacts the balancer spring due to rotation of the balancer gear. A gear contact portion 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.
The turning force F2 of the balancer gear, which is determined by the relationship between the balancer spring and the balancer gear, is applied to the balancer gear and the contact portion between the balancer spring and the balancer gear is brought into contact with each other by the rotation of the balancer gear. Since the direction of F1 is changed and the turning force 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 conveying means.
It is possible to downsize the drive motor that drives the transporting operation of the disc transporting means, and the transporting operation positioning control method of the disc transporting means can be made the same during the ascent and descent.

[Brief description of drawings]

FIG. 1 is a perspective view showing a disc 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 the conveying means in the disc playing device is located at the lowermost portion.

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

FIG. 4 is a plan view showing a state of a balancer gear and a balancer spring when the conveying means in the disc playing device is located at the uppermost position.

[Description of Reference Signs] 1 Storage Part 2 Disc Conveying Means 4 Conveyance Driving Unit 11 First Connection Gear 12 Second Connection Gear 13 Balancer Gear Engagement Part 14 Connection Shaft 15 First Pulley 16 Second Pulley 17 Lifting Belt 18 Balancer gear 19 Balancer gear Spring engaging part 20 Abutting part 21 Spring engaging part 22 Balancer spring

Claims (2)

[Claims] 1. A storage unit for detachably storing a plurality of discs, a disc transporting unit for mounting and storing the discs for recording / reproducing or transporting information, and a transport driving unit for driving the disc transporting unit up and down. A balancer gear that is engaged with the gear of the transport drive unit and is rotatable, a spring engagement portion at a fixed position, a balancer gear spring engagement portion provided on the balancer gear, the spring engagement portion, and the spring engagement portion. A disc playing device comprising a balancer spring mounted between the balancer gear spring engaging portions to balance the load in the ascending / descending direction of the disc carrying means and the carrying operation range. 2. The disk playing device according to claim 1, wherein the balancer gear is provided with an abutting portion which comes into contact with the balancer spring by its rotation.