JPH0136827Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Technical Field of the Invention The present invention relates to a medium conveyance path that prevents erroneous detection of the presence or absence of a medium due to opening and closing operations of a medium conveyance guide.

(b) Background of the Technology In recent years, automatic teller machines and automatic cash dispensing machines, which are transaction operating devices, have been widely used in financial institutions as part of computer banking systems. These devices are equipped with a conveyance path that supplies and distributes media such as banknotes to storage units (safes), and a media reader that counts the conveyed media, allowing accurate conveyance and high-precision counting of the media. requested.

In other words, these devices that handle cash must be completely free from banknote counting errors, and if such errors should occur, not only the manufacturers but also the financial institutions in which they are installed would lose credibility, and the social impact would be enormous.

However, it is not impossible for the medium to jam in the conveyance path, and erroneous counting is likely to occur when countermeasures are taken. Therefore, countermeasures have become essential.

(c) Prior art and problems The prior art will be explained below with reference to FIG. FIG. 1 shows a medium conveyance path, FIG. 1A is a side view showing the conveyance path in a closed state, and FIG. 1B is a side view showing the conveyance path in an open state.

As shown in FIGS. 1a and 1b, the medium conveyance path 1 includes two guide plates 2a, which are opposed to each other and are spaced apart from each other.
2b, feed rollers 3a, 3b, pinch rollers 4a, 4b, etc., and a sensor 5 consisting of a light emitting and light receiving element is provided on the guide plates 2a, 2b so as to pass through the conveyance path and cross at right angles thereto.

The sensor 5 is provided with a counting section 6 that counts detection signals detected by the sensor 5.

When a banknote 7 is inserted into the medium transport path 1 having such a configuration from the left side of the figure as shown in FIG.
Arrow B due to the rotation of the feed roller 3a in the direction of arrow A.
direction, the optical path of the sensor 5 is blocked, and the sensor 5 detects the passage of the banknote 7.

Then, the detection signal is sent to the counter 6, and the banknote 7
The number of transferred sheets is counted.

Furthermore, if the banknote 7 becomes jammed in the medium conveyance path 1, as shown in FIG. 1b,
In order to remove this, the guide plate 2b of the medium conveyance path 1 is configured to rotate in the direction of arrow C around the rotation axis of the pinch roller 4a.

However, when the guide plate 2b rotates in the direction of the arrow C, the optical axes of the light emitting and light receiving elements of the sensor 5 become mismatched as shown in the figure, and even if there is no banknote 7 in the medium conveyance path 1, the optical axis is changed due to the banknote 7. There is a drawback that the sensor 5 emits a detection signal in the same state as when it is cut off and is counted by the counter 6.

(d) Purpose of the invention The purpose of the present invention is to solve the above-mentioned drawbacks and to provide a medium conveyance path that does not cause erroneous counting even when the conveyance path is opened and closed in order to solve jams.

(e) Structure of the invention In order to achieve the above object, the invention provides an opening/closing detection means in the opening/closing mechanism, and outputs a medium detection signal based on the opening/closing signal of the opening/closing detection means and the detection signal of the medium. A logic circuit is provided so that a medium detection signal is output to a counter or the like only when the conveyance path close signal and the medium detection signal match.

That is, in addition to the conventional medium detection sensor, a sensor for detecting the open/closed state of the transport path is additionally provided, and the medium is counted only when the detection signals of both sensors match.

In this way, detection is duplicated, making it possible to prevent erroneous counting from occurring.

(f) Embodiment of the invention An embodiment of the invention will be described below with reference to FIGS. 2 and 3. 2 shows a medium conveyance path according to the present invention, FIG. 2A is a side view showing the conveyance path in a closed state, FIG. The figure is a block diagram of FIG.

In the figure, 1' is a medium conveyance path, 2c is a guide plate, 8 is a switch, 9 is a NOT circuit element, and 10 is a
The AND circuit element 11 is a logic circuit. Items with the same reference numerals throughout the figures are the same.

As shown in FIGS. 2a and 2b, the present invention includes a switch 8 that operates in conjunction with the rotational movement of the guide plate 2c of the medium conveyance path 1', and a switch 8 and a sensor 5.
As shown in the block diagram of FIG. 3, the logic circuit 11 is comprised of a NOT circuit element 9 and an AND circuit element, Signal is NOT
The detection signal of the sensor 5 is sent directly to the AND circuit element 10 via the circuit element 9.
and the output signal of the AND circuit element 10 is configured to be received by the coefficient unit 6.

To explain the operation of the medium transport path 1', when the guide plate 2c is in the closed state as shown in FIG. 2a,
The signal level of switch 8 itself is "0",
When the guide plate 2c is in the open state as shown in FIG. It is configured so that it becomes "1" when there is a mismatch due to a blockage due to the medium or the like.

Therefore, even if the signal level becomes "1" due to the optical axis of the sensor 5 being interrupted by the banknote 7 or due to a discrepancy caused by the guide plate 2c being in the open state, the NOT circuit element of the switch 8 The output signal of the AND circuit element 10 will not become "1" unless the signal level via 9 becomes "1" as well. In other words, in order for the output signal of the AND circuit element 10 to become "1" and for the signal to be counted by the coefficient section 6, the signal level of the switch 8 itself must be "0", and the signal level of the switch 8 itself must be "0". This is limited to the case where the guide plate 2c of the passage 1' is in the closed state as shown in FIG. 2a.

Therefore, in order for the medium such as the banknote 7 to be counted by the counter 6, the guide plate 2c of the medium conveyance path 1' is in the closed state as shown in FIG. This is possible only when the optical axis is blocked, and therefore the counting of media such as banknotes 7 by the counter 6 becomes extremely accurate.

(g) Effects of the invention As explained above, by applying the media conveyance path of the present invention to the device, it is possible to accurately count media such as banknotes and prevent erroneous counts, and it is possible to open the conveyance path during maintenance. It is now possible to check the conveyance path without making erroneous counts while monitoring abnormal passage of the medium.

[Brief explanation of the drawing]

Figure 1 shows the medium conveyance path, Figure a is a side view showing the conveyance path in the closed state, Figure b is a side view showing the conveyance path in the open state, and Figure 2 is the present invention. Figure 3 shows the medium conveyance path according to Figure 2. Figure a is a side view showing the conveyance path in the closed state, Figure b is a side view showing the conveyance path in the open state. It is a block diagram. In the figure, 1 and 1' are medium conveyance paths, 2a to 2
c is a guide plate, 3a, 3b are feed rollers, 4a~
4b is a pinch roller, 5 is a sensor, 6 is a counter,
7 is a banknote, 8 is a switch, 9 is a NOT circuit element,
10 is an AND circuit element, and 11 is a logic circuit.

Claims (1)

[Claims for Utility Model Registration] Formed by opposing guide plates, one guide plate is configured to be openable and closable with respect to the other guide plate, and outputs a detection signal when a conveyed medium is detected, and a detection means for outputting the detection signal even when the guide plate is open, the medium conveying path including a detection means for detecting opening/closing of the guide plate,
A logic circuit is provided that outputs a medium detection signal based on the opening/closing signal of the opening/closing detection means and the detection signal of the medium, and the medium is detected only when the closing signal of the transport path and the detection signal of the medium match. A medium transport path characterized by outputting a signal.