JPH03160586A - Driving mechanism for information recording and reproducing device - Google Patents

Abstract

PURPOSE:To simplify a device and to protect a card by driving a card carrying means and a shutter driving means by a common driving source. CONSTITUTION:When photo interrupter 15 detect that a card 18 is inserted to a card insertion hole 10, a motor 1 starts rotation, and a shaft 2 is rotated t rotate a carrying roll 13. A centrifugal force acts on a weight 7 attached to a wire 6 simultaneously with rotation of the shaft 2 to pull the wire 6 out ward, and a slider 4 is moved toward a holding tool 17, and a link 9 is pulled, and a shutter 11 is pulled down to open the insertion hole 10. When the card 18 is carried to a prescribed position, the motor 1 is stopped, and the shaft 11 is pushed up by the action of a coiled spring 5 to close the insertion hole 10. Thus, the card 18 is not damaged and the device is simplified.

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to a drive mechanism for an information recording/reproducing apparatus that records and reproduces information on, for example, a card-shaped information recording medium. [Prior art] Information on a card-shaped information recording medium is recorded by an information recording and reproducing device.
Various optical recording and reproducing devices have been proposed so far. After the optical card is inserted into the card slot, this device closes the card slot with a shutter to prevent double insertion. Furthermore, after the optical card is transported to a predetermined position in the device by the transport mechanism and initial positioning is performed, the optical pickup is moved to determine the initial position on the optical card, and the optical card is moved in the track direction while performing focus control and tracking control. It is designed to move around and record and play back information. After the information has been recorded and reproduced, the optical card is ejected from the card insertion slot again. The shutter mechanisms in such devices can be broadly classified into two types. The one shown in Figure 5 is one of them.
A shutter 33 is provided in the insertion slot 3l of the card 30 and is configured to move up and down via a spring member 32 in a direction perpendicular to the card insertion direction.In order to insert the card 30, the shutter 33 is pushed up by the insertion force. When the insertion slot 31 is opened and the card 30 is inserted into the device, the shutter 33 closes the insertion slot again with the restoring force of the spring member 32. After insertion, the card is transported to the card processing section by the transport roller 25 and opposing roller 26. A prior art related to this shutter mechanism is disclosed in Japanese Utility Model Application Publication No. 56-105127. Another shutter mechanism is shown in FIG. A photo inruptor 27 is provided in the insertion slot 31 of the card 30 to detect the insertion of the card 30, and the insertion drives a solenoid 28 connected to a shutter 33 that closes the insertion slot 3l. In other words,
When the solenoid as a driving source is energized on the 2nd day, the shutter 33 opens, and when the energization is stopped, the force of the spring 29 opens the shutter 33.
3 is closed. In this case, energization is controlled by a dedicated circuit. A conventional technique related to this shutter mechanism is disclosed in Japanese Utility Model Application Publication No. 57-29958. [Problems to be Solved by the Invention] However, in the former method, the card comes into contact with the shutter at the insertion slot and the shutter is forcibly pushed up by the frictional force between the two, which may damage the card. It will be given. There is a problem in that the accumulation of these conditions shortens the lifespan of the card. On the other hand, although the latter does not have the same problems as the former,
A drive source, a drive circuit, and a control circuit must be provided, resulting in a problem that the device becomes more complicated, larger, and more expensive. The present invention is proposed to solve the above-mentioned problems.
The purpose of this invention is to provide a drive mechanism for an information recording and reproducing device that can drive each component with a simple configuration and protect the card. [Means and effects for solving the problems] In order to achieve the above object, the present invention provides an insertion slot into which an information recording medium is inserted, a shutter for opening and closing the insertion slot, and a mechanism for transporting the inserted information recording medium into the inside of the device. In a drive mechanism for an information recording and reproducing apparatus having a conveyance means, a shutter drive means is connected to a drive source for driving the conveyance means via a power conversion means. Since the card transport means and the shutter drive means are driven by a common drive source in this way, the apparatus can be simplified. [Embodiment] FIG. 1 is a side view of a drive mechanism showing a first embodiment of the present invention. A bevel gear 3 is attached to the tip of the shaft 2 of the motor l, and a slider 4 is provided inside the bevel gear 3 so as to be movable in the axial direction of the shaft 2. The slider 4 is biased toward the tip of the shaft 2 by a coil spring 5 attached to the shaft 2. coil spring 5
The shaft 2 is
The two wires 6 stretched substantially parallel to the slider 4 ensure a fixed position of the slider 4 when the motor is stationary. A weight 7 is attached to the center of the wire 6. The slider 4 is engaged with a rod 8 that extends in the card insertion direction and is movable in the same direction. The rod 8 is connected via a link 9 to a shutter 11 that opens and closes the card insertion slot IO. The bevel gear 3 meshes with the large bevel gear 12 and rotates a conveyance roller 13 provided coaxially with the large bevel gear 12. A counter roller 14 operates to insert and eject a card into the apparatus while rotating together with the conveyance roller 13. 15 is a photointerrupter provided near the card insertion slot IO to detect whether or not a card is inserted. To explain the operation of this embodiment configured in this way,
From the stationary state of the motor 1 shown in FIG. 1A, as shown in FIG. Start. As the shaft 2 rotates, the conveyance roller 13 is rotated via the bevel gear 3 and the large bevel gear 12. At the same time, centrifugal force acts on the weight 7 attached to the wire 6 as the shaft 2 rotates, pulling the wire 6 outward as shown. Among the wire holders 16 and 17, the holder 1 closer to the motor l
7 is fixed to the shaft 2, and the holder 16 is movable together with the slider 4, so when the wire 6 is pulled, the slider 4 moves in the direction of the holder 17. Then, the rod 8 moves in the direction of the motor 1 together with the slider 4, the link 9 is pulled, and the shutter 11 connected to the link 9 is pulled down, so that the insertion port 10 is opened. The card l8 passes through the open insertion slot 10, and the transport roller 13
, and are transported into the apparatus by opposing rollers 14. When the card 18 is conveyed to a predetermined position, the motor 1 stops, and centrifugal force no longer acts on the weight 7. Then, the slider 4 returns to the position shown in Fig. A by the action of the coil spring 5, and the shirt opening 1 is pushed up through the action of the rod 8 and link 9, and the insertion opening 10 is closed. Note that the return operation of the slider 4 to its original position is not dependent on the biasing force of the coil spring 5, but is instead performed using the wire 6.
It may also depend on its own resilience. In the case of ejecting the card 18, when receiving an ejection signal from, for example, an eject button, the motor 1 rotates in reverse, and the conveying roller 13 and opposing roller 14 rotate in reverse through the shaft 2, bevel gear 3, large bevel gear l2, etc. Convey in the direction of the insertion port IO. In this case as well, the slider 4 is moved by the operation of the weight 7 to lower the shutter 11 via the rod 8 and the link 9, or to push it up by stopping the rotation of the motor 1, as described above. Figure 2 shows a block diagram of the above basic operations. FIG. 3 shows the operation timing of each structural element. By the action of the power conversion mechanism, the movement speed of the drive source is first converted into force for opening the shutter, and since the amount of displacement in which the shutter operates is limited, the shutter remains open after it is fully opened. Become. When the card conveyance is completed, the shutter opening force is lost and the shutter is closed by a spring or the like. According to this embodiment, the card 18 is inserted into and ejected from the device at the insertion slot 10 without coming into contact with the shutter 11 or the like, so that the card 11 is not damaged by contact. Further, since the drive source for transporting the card 18 can be used for opening and closing the shutter 1l without using a dedicated drive source, the device can be made smaller and lower in cost. FIG. 4 shows a second embodiment of the present invention, in which A is a side view and B is a plan view, and parts corresponding to those in the first embodiment are given the same reference numerals. A sun gear 19a is fixed to the shaft 2 of the motor 1, and the sun gear 19a meshes with a roller gear 24 to rotate a conveying roller 13 coaxial with the roller gear 24. A planetary gear 19b having an integrally rotating arm 20 is meshed with the sun gear 19a. arm 20
is provided coaxially with the sun gear 19a via an integral arm shaft 23, one end of a wire 22 is fixed to the arm shaft 23, and the other end of the wire 22 is fixed to the shutter 11. be. The wire 22 is provided with a pulley 21 that can be adjusted in the vertical direction, and the shutter 11 is
The operating position of the wire 22 prevents the wire 22 from becoming slack. Note that the shutter 11 is biased in a direction to close the insertion port 10 via a spring (not shown). To explain the operation of this embodiment configured in this way,
First, when the photo interrupter l5 detects that the card l8 has been inserted into the card insertion slot 10, a signal is supplied to the motor 1, and when the motor 1 rotates, it rotates the conveyance roller l3 via the sun gear 19a and the roller gear 24. As the conveyance roller 13 rotates, the planetary gear 19
b receives a force in the direction of rotation of the motor 1, causing the arm 20 to rotate. Then, the arm shaft 23 winds up the wire 22, so the shutter 11 is pulled down and the insertion opening 10
will be opened. When the shutter 1l is completely opened and the wire 22 is wound up, the arm 20 stops rotating and the planetary gear 19b becomes idle. When the card 18 is inserted into the device and transported by the transport roller 13 and the opposing roller l4 to a predetermined position, the motor 1 stops. Then, since the branet gear 19b cannot obtain the power from the sun gear 19a,
The arm 20 rotates in the opposite direction via a spring (not shown). Then, by rewinding the wire 22, the shutter 11
is moved in the direction of closing the insertion port 10 by a spring (not shown). When the winding amount of the wire 22 is exhausted, the shutter 11 closes the insertion opening 10 and stops. In the case of ejecting the card 18, the motor l rotates in the reverse direction in response to the ejection signal, and the reverse rotation of the conveyance roller 13 and the opposing roller l4 via the shaft 2, sun gear 19a, flane gear 19b, arm 20, etc. Transport to. In this case as well, opening and closing of the insertion slot 10 by pulling down and pushing up the shutter 11 by winding and unwinding the wire 22 is the same as in the case of card 18 insertion. In this way, effects similar to those of the embodiment described above can be obtained.

【Effect of the invention】

As described above, according to the present invention, the opening/closing movement of the shutter is not performed by the contact of the inserted card, but by the side of the shutter device, which is driven in response to a signal from a sensor. Since the driving source for the opening/closing movement is one for card transport, the device can be simplified, smaller, and lowered in cost.

[Brief explanation of the drawing]

FIGS. 1A and 1B are side views showing the first embodiment of the present invention;
2 is a block diagram showing the basic operation of the device; FIG. 3 is a diagram explaining the operation timing; FIGS. 4A and 4B are side views showing the second embodiment of the present invention; The plan view, FIGS. 5 and 6 are side views showing a conventional example. 1... Motor 2... Shaft 4... Slider 6... Wire 7... Weight 8... Rondo 9... Link l1... Shutter 13... Conveyance roller l5... Photo interrupter 1 Figure A Figure 4 A Figure 5 Figure 6

Claims (1)

[Claims] 1. Information having an insertion slot into which an information recording medium is inserted, a shutter for opening and closing the insertion slot, a conveying means for conveying the inserted information recording medium into the inside of the apparatus, and a means for driving these. A drive mechanism for an information recording and reproducing apparatus, characterized in that a shutter driving means is connected to a drive source for driving the conveying means via a power converting means.