JPH0586142U - Disc automatic playback device - Google Patents

Abstract

(57) [Abstract] [Purpose] One motor is used to switch between the operation of the disk tray transport and the disk reader. [Structure] A cam, an arm that follows the cam, and a gear train that is supported by the arm. The end gear of the gear train is oscillated by the arm and the gear for disc tray transport operation and the disc reader It is characterized in that it is meshed with the operating gear in a switchable manner.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 DISCLOSURE OF THE INVENTION The present invention relates to an automatic disc reproducing apparatus, particularly to a disc tray transporting means for transporting a disc tray on which a disc is placed to a disc reading device, and a reading device for mounting a disc on the transported disc tray to the reading device. Regarding operation means.

[0002]

[Prior art]

 Conventionally, it is known that the transporting means of the disc tray and the operating means of the reading device are driven by individual motors, that is, two motors are used.

[0003]

[Problems to be solved by the device]

 In the reproducing apparatus using the two motors described in the above-mentioned prior art, it is difficult to set the layout of the motors, which is an obstacle to downsizing of the apparatus, and there is a problem of cost increase. Therefore, in the present invention, a cam, an arm swinging by the cam, and a gear train supported by the arm are combined, so that a single motor serves as the transport operation means of the disc tray and the operation means of the reading device. The purpose is to enable switching operation and to reduce the size of the device by facilitating the layout of the motor layout that has occurred in the past, and also to reduce the cost.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention supports a fulcrum shaft of a substrate by axially supporting an intermediate part of an arm whose one end oscillates and follows a cam of the substrate, and which is meshed with and connected to the arm. The gear train connected to the gear is supported, the starting gear of this gear train is always meshed with the cam, and the end gear of the gear train is mounted on the substrate, the gear for transport operation of the disc tray and the operation of the disc reading device. The gist of the invention is that the gear is engaged with the gear for changeover by the rotation of the arm by the rotation of the cam.

[0005]

【Example】

 Reference numeral 1 denotes a fulcrum shaft planted in a base plate (not shown). A midway part of an arm 2 is pivotally supported on the fulcrum shaft 1, and one end of the arm 2 is provided with a pin 3 provided on the arm. It engages with a spiral grooved cam 5 formed on the surface of the switching gear 4 which is rotatably supported.

The arm 2 supports a gear train 6 that meshes with each other. In the gear train 6, the starting end gear 6a is located on the same axis as the fulcrum shaft 1, and the starting end gears 6b and 6c are coaxially arranged with the starting end gear 6a. The start end gear 6c is meshed with the switching gear 4 and is constantly meshed with a drive gear 8 (worm) connected to a forward / reverse motor 7 provided on the substrate.

The end gears 6d of the gear train 6 are alternately engaged and disengaged on both sides of the gear train 6 between the gears 9 for carrying the disc tray, which are supported by the substrate, and the gears 10 for operating the disc reader. It is freely intervened.

A bevel gear 11 is provided coaxially with the transfer operation gear 9 of the disc tray, and the bevel gear 11 is adapted to rotate a pulley 13 provided on a gear 12 meshing with the bevel gear 11. A wire 15 having a claw 14 for pulling out the disc tray is wound around.

On the other hand, a pinion 16 is meshingly connected to the operation gear 10 of the disk reading device, and the pinion 16 is constantly meshed with a rack 17 biased to one side, and a front plate of the rack 17 is meshed with the rack 17. An engaging hole 18 having a stepwise side surface is provided in the portion, and the other end pin 21 of a reader 20 having one end rotatably attached to the shaft supporting portion 19 of the substrate is inserted into and engaged with the engaging hole 18. As the rack 17 swings, the pins 21 move to the upper and lower stages of the engagement holes 18 so that the reading device 20 can be raised and lowered with the shaft support 19 as a fulcrum. In the figure, A is a disc tray, and B is a disc placed on the disc tray.

[0010]

[Function of the device]

 The figure shows that the arm 2 is swung to one side, and the terminal gear 6d supported by the arm 2 moves the rack 17 via the gear 10, whereby a disk is attached to the reading device 20, so-called reading state. Is shown. Therefore, when the motor 7 is now moved in one direction by a reading end signal or the like, the gear train 6 and the switching gear 4 are rotated by the transmission of the driving gear 8 connected thereto, and the switching gear 4 and the groove cam 5 cause the driving gear 8 to rotate. The arm 3 in the state shown in the above figure is oscillated by switching to the other side, whereby the terminal gear 6d which is already rotating meshes with the gear 9 for carrying operation of the disc tray, and via the bevel gear 11 and the gear 12. When the pulley 13 is rotated and the wire 15 is moved by this rotation, the claw 14 attached to the wire 15 conveys the disc tray A to the left in the figure, and the tray is accommodated in a magazine or the like.

Further, since the arm is switched to the tray transport side, the rack 17 is returned by the beam means, and the reading device 20 descends with the shaft supporting portion 19 as a fulcrum to allow the next disk to be received. Of course,

When the disc tray is pulled out from the magazine, the switching gear 4 is reversely rotated by the other direction rotation of the motor 7 in the previous state, that is, in the state where the terminating gear 6d meshes with the gear 9 for the disc tray conveying operation. It is done.

[0013]

[Effect of the device]

 As described above, the present invention has the following effects. (A) By adopting the structure in which the cam, the arm connected to the cam, and the gear train supported by the arm are combined, the drive can be completed by using one motor, and thus two motors can be used. Unlike the conventional playback device that uses the, the layout of the motor arrangement can be easily set. (B) In addition to the use of a single motor, synthetic resin molded parts such as cams and gear trains can be sufficient, so the cost of the playback device can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view of an automatic disc reproducing apparatus.

[Explanation of symbols]

 1 fulcrum shaft 2 arm 5 cam 6 gear train 6b start end gear 6d end gear 9 disk tray transport operation gear 10 disk reader operation gear

Claims (1)

[Scope of utility model registration request] 1. A gear train in which a fulcrum shaft of a base plate pivotally supports a middle portion of an arm, one end of which swingably follows a cam of the base plate, meshes with each other and is connected to a drive gear. The gears for supporting the gears, the starting gears of the gear train are always meshed with the cams, and the end gears of the gear trains are provided on the substrate for the transport operation gear of the disc tray and the operation gears of the disc reading device for the cams. An automatic disc reproducing apparatus characterized in that the automatic disc reproducing apparatus is characterized in that it is meshed so as to be switchable by swinging of an arm caused by rotation of the.