JPH0453568Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a stacked state detection device, and particularly to a device that can detect the stacked state of movable bodies and accurately hold the movable bodies in the stacked state.

[Prior Art] Conventionally, a plurality of moving bodies such as magnetic storage disks, optical storage disks, etc. in a laminated state are swung or moved through a predetermined angle to read out information, and then returned to the original stacked state and stopped. There are known control devices that use mechanical switches to detect the position of the control device.

In FIG. 3, each movable body 1 is rotatable in the direction of arrow A about a shaft 2, and each has a gear portion 2a, and a motor 3 is connected to the gear portion 2a of any movable body 1. The moving body 1 is individually rotated by meshing and rotating a gear portion 5 fixed to a rotating shaft 4. The motor 3 is controlled by a mechanical sequence microcomputer 8 via a reversible motor driver 7.
is driven until it is detected that all of the movable bodies 1 are in a stacked state at a predetermined position.

The switch section 14 consists of a switch element 14m provided for each movable body 1 in order to detect the stacked state of each movable body 1, and each element 14m is connected to each contactor 1.
4a is turned on when pressed by a presser 14b attached to the moving body 1, and each element 14m
are connected in series. Therefore, if even one of the movable bodies 1 is swung out, a predetermined switch element is turned off, and an OFF signal is output from the switch section 14, and the swung out movable body 1 is restored as shown in the figure. When the movable bodies 1 are stacked together with other movable bodies 1, an on signal is output from the switch section 14, and the microcomputer 8 stops the motor 3 based on this signal. Therefore, the movable body 1 can be accurately positioned in the original stacked state.

[Problems to be solved by the invention] Switch part 1 as a conventional stacking state detection means
4 is composed of a mechanical switch, which requires the same number of switch elements as the number of movable objects to be moved, which makes the device expensive and complicated, and the range of application is limited. The problem was that it was difficult.

The present invention was made to solve the above-mentioned problems, and aims to simplify the device by reducing the number of component parts, and to obtain a device that is inexpensive and has high applicability.

The stacked state detection means according to this invention includes: a support body that supports a plurality of moving bodies on the same axis; a drive device that rotates the moving bodies about the axis; and a drive device that rotates the moving bodies around the axis; a hole that is provided and forms an optical through hole when the plurality of movable bodies are stacked at a predetermined position; a light emitting body that generates intermittent light having a predetermined interval; The light receiving means receives the light transmitted through the hole, and the driving device is stopped based on a comparison result between the output of the light receiving means and the emission interval of the intermittent light generated by the light emitting body.

[Function] By adopting the above-described configuration, the lamination state detection means of the present invention forms an optical through-hole in which the holes provided in each of the movable bodies face each other, and the intermittent light passing through the through-hole The stacked state of a plurality of moving bodies is detected by detecting light and comparing the interval between the detected lights and the interval between incident intermittent lights.

[Embodiments of the invention] Examples of the invention will be described below.
FIG. 1 shows a laminated state detection device that forms the basis of the present invention, and numeral 9 indicates an infrared ray that generates an optical signal for detection.
The LED 10 detects the optical signal generated from the infrared LED 9 and is paired with the phototransistor 10a, the amplification transistor 10b, and the resistor 1.
0c, and 11a are holes that form through holes 11 facing each other when the movable bodies 1 are in a stacked state at a predetermined position as shown in the figure. ing.

In the above configuration, the operation will be explained.

When moving object 1 is being swung out, LED9
does not emit light, but when it is swung back, the mechanical sequence microcomputer 8 causes the LED 9 to emit light.
When the movable body 1 returns to a predetermined position, that is, to a position where it is stacked with another movable body 1 and should stop, the holes 11a formed in each movable body 1 oppose each other, and a through hole 11 is formed. , the optical signal passes through this through hole 11 and is transferred to the phototransistor 10a.
is incident on the The phototransistor 10a receives this light and becomes conductive, and a stop signal from the lamination detection means 10 is sent to the mechanical sequence microcomputer 8.
By sending the signal to , the motor 3 and moving body 1 are stopped through the reversible motor driver 7.

FIG. 2 is a diagram showing an embodiment of the present invention. In the embodiment explained in FIG. By emitting light intermittently at certain intervals, comparing it with the input to the phototransistor 10a in the coincidence detector 13, and generating a stop signal based on this result, more reliable detection can be achieved. By configuring it in this way, it is possible to reduce the power consumption of the LED 9.

Further, more reliable detection is possible by limiting the number of times of this intermittent light emission to a predetermined number of times.

[Effects of the invention] As described above, according to the invention, there is provided a support body that supports a plurality of movable bodies on the same axis, a drive device that rotates the movable bodies about the axis of rotation, and the above-mentioned. a hole provided in each of the plurality of moving bodies and forming an optical through hole when the plurality of moving bodies are stacked at a predetermined position; a light emitting body generating intermittent light having a predetermined interval; and the light emitting body. and a light receiving means for receiving light emitted from the body and transmitted through the through hole, and stopping the driving device based on a comparison result between the output of the light receiving means and the emission interval of the intermittent light generated by the light emitting body. Since the present invention is configured to do so, it is possible to eliminate the need for a conventional switch element for individually detecting the stacked state of the movable body, and the following effects can be achieved compared to an example using a light emitter that emits light continuously.

Since a light emitter that emits light intermittently is used, the intermittent light emitting interval generated by the light emitter is compared with the output interval obtained by the light receiving means, and the results of this comparison are used to more accurately detect the moving object. It becomes possible to detect the stacking state of the layers.

Since intermittent light is used, power consumption of the light emitter can be reduced.

[Brief explanation of drawings]

Fig. 1 is a simplified configuration diagram of a lamination state detection device that forms the basis of an embodiment of the present invention, Fig. 2 is a simplified configuration diagram showing an embodiment of this invention, and Fig. 3 shows a conventional lamination state detection device. It is a diagram. 1...Multiple stacked moving bodies, 9...For detection
LED, 10... stacking state detection means, 11... through hole, 11a... hole, 12... intermittent pulse generator, 13... comparison detector. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims for Utility Model Registration] (1) A support that supports a plurality of moving bodies on the same axis;
a drive device that rotates the movable body about the axis; and a drive device that is provided on each of the plurality of movable bodies and forms an optical through hole when the plurality of movable bodies are stacked at a predetermined position. a hole, a light emitting body that generates intermittent light having a predetermined interval, and a light receiving means that receives the light emitted from the light emitting body and transmitted through the through hole, and the output of the light receiving means and the light emitting body are A stacked state detection device characterized in that the driving device is stopped based on a comparison result with a light emission interval of intermittent light to be generated. (2) The stacked state detection device according to claim 1, wherein the detection means has a predetermined limit on the number of times it receives the intermittent light.