JPS6210856Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a coin sorting device used in automatic vending machines and the like, and in particular, it collides the inserted coins with a repulsion member to sort them according to their different materials.

A known prior art of this type is the device shown in Fig. 1. Fig. 1 is a front view showing the main parts of a coin sorting device, with the coin sorting device indicated at 1. Coins inserted through a coin insertion slot 2 are guided onto a coin passage 5 by a cradle 3. Coins that roll on the coin passage 5 and drop from the end of the coin passage 2 are attracted to a magnet 6.
The braking action is provided by

The counterfeit coins with high electrical conductivity are guided to the counterfeit coin passage 9 along the locus a to d by the braking action of the magnet 6, and genuine coins made of cupronickel with low electrical conductivity and those made of lead etc. whose electrical conductivity is almost equal to genuine coins are used. The counterfeit coin collides with the repulsion member 8 through a trajectory a-b. The collision surface of the repulsion member 8 is planar and wider than the width of the coin. Among the coins that collided with the repulsion member 8, the specie coins with a Bitkars hardness (HV) of about 130 to 150 follow the trajectory b-c, jump over the separator 7, and are guided into the specie passage 10, where the Bitkars hardness (HV) is 5. The following fake coins are b
-e falls along the trajectory and is guided to the counterfeit currency passageway 9. In this way, coins that collide with the repulsion member 8 are sorted according to their material.

However, in the conventional device, the conductivity is almost the same as that of the specie, and the Vickers hardness (HV) is 10~10.
When a counterfeit coin made of approximately 100 alloys (alloy names are not listed here due to the risk of unauthorized use. Hereinafter, these counterfeit coins are referred to as specified counterfeit coins), they collide with the repulsion member 8. Although the jumping force of the specific counterfeit coin is smaller than that of genuine coin, it follows a trajectory similar to that of genuine coin, and the specified counterfeit coin is accepted as genuine coin.
At this time, it is conceivable to eliminate the specified counterfeit coins by changing the position of the separator 7, taking advantage of the fact that the jumping force of the specified counterfeit coins is somewhat inferior to that of genuine coins. Problems like this arise. That is, even if it is a genuine coin, the locus of the coin that bounces when it collides with the repulsion member 8 does not necessarily follow the same trajectory, but has variations. FIG. 2 shows the range of such variations. In Figure 2, the same parts as in Figure 1 are given the same symbols.
L ₁ is the specie's trajectory C ₁ when the specie's jumping force is maximum
and the range of the trajectory C ₂ of the genuine coin when it is minimum, L ₂ is the trajectory C ₃ of the specific counterfeit currency when the jumping force of the specific counterfeit currency is maximum
and shows the range of the specific counterfeit currency locus C ₄ when it is minimum. As is clear from Figure 2, in order to eliminate all specific counterfeit coins, the separator 7 must be moved along the trajectory C ₃
The specified counterfeit currency _C0 must be placed in the position shown in the figure so that it falls into the counterfeit currency path. However, if the separator 7 is placed in the position shown, the trajectory
This would also exclude specie passing through the range of C ₃ and trajectory C ₂ . Therefore, changing the position of the separator 7 in order to eliminate all specific counterfeit coins will result in an extremely low acceptance rate of genuine coins, which will be fatal to the coin sorting device.

Further, in the conventional device, the collision surface of the repulsion member 2 is flat and wider than the width of the coin, so that dust tends to adhere thereto. Repulsion member 2
If dust adheres to the collision surface of the coin, when the coin collides with the repulsion member 2, the dust acts as a buffer and the repulsion force of the coin becomes insufficient, resulting in the defect that genuine coins are guided into the counterfeit coin path.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the drawbacks of conventional devices and to provide a device that can reliably sort genuine coins and specified counterfeit coins. According to the present invention, this object is achieved by forming the area of the collision portion where the hard parts of the repulsion member come into contact with each other to be smaller than the width of the coin. According to the present invention, when the specified counterfeit coin collides with the collision part of the repulsion member, the collision part bites into the specified counterfeit coin and the kinetic energy of the specified counterfeit coin is absorbed by the repulsion member, so that the collision part of the specified counterfeit coin is absorbed by the repulsion member. The repulsion force is reduced, which makes it possible to reliably sort genuine coins and counterfeit coins. Further, since the area of the collision part of the repulsion member is small, there is almost no dust adhering to this collision part, and it is possible to prevent erroneous sorting due to adhesion of dust.

Next, one embodiment of the present invention will be described in detail based on the drawings. 3 and 4 show an embodiment of the present invention, with FIG. 3 being a perspective view of the main parts, and FIG. 4 being a parts diagram of the repulsion member.

In Figure 3, 5 again indicates the coin passage, and 1
0 is a repulsion member. As is clear from FIG. 4, the repulsion member 10 has a single chevron-shaped protrusion 11 formed on the coin collision surface side. The tip of this chevron-shaped protrusion 11 is used as a colliding portion 12 with a coin. Since the contact area of the collision part 12 of the repulsion member 10 with the coin is small, counterfeit coins made of soft material can be pushed into the collision part 12.
When it collides with the collision part 12 as shown in FIG.
enters the counterfeit currency. In FIG. 5, 90 indicates a substrate. As described above, the collision part 12 bites into the counterfeit coin, so that the kinetic energy of the counterfeit coin made of a soft material is absorbed by the repulsion member 10 when it collides with the repulsion member 10. Therefore, the counterfeit coin is the collision member 1.
The jumping force caused by colliding with zero and rebounding is significantly smaller than the jumping force when the collision surface of the conventional repelling member is flat. On the other hand, even if a genuine coin made of a hard material collides with the collision part 12 of the repulsion member 10, the collision part 12 will not dig into the genuine coin, and the kinetic energy of the genuine coin will be absorbed by the repulsion member 10. It acts more as a repulsive force. Therefore, the jumping force with which the genuine coin collides with the repelling member 10 and rebounds is almost the same as the jumping force when the collision surface of the repelling member is flat as in the conventional case.

FIG. 3 shows the motion trajectories of genuine coins and specific counterfeit coins tested using the repelling member 10. In the figure, _L10 is the range in which the genuine coin collides with the repelling member 10 and jumps, L. ₂₀ indicates the range in which the specific counterfeit currency collides with the repulsion member 10 and jumps. As is clear from this figure, when the repulsion member 10 having the collision part 12 is used, a difference occurs in the jumping force between genuine coins and specific counterfeit coins,
By arranging the separator 7 at the illustrated position to exclude the specific counterfeit currency C ₁ passing through the trajectory of C ₅ , genuine coins and specific counterfeit coins can be reliably sorted.

Furthermore, by forming the chevron protrusion ₁₁ on the repulsion member 10, as shown in FIG. C collides with counterfeit coin C on the board 90
becomes pressed, and as a result, the counterfeit coin C falls without jumping and is guided to the counterfeit coin passage. Therefore, the present invention has the advantage that it is possible to eliminate thin counterfeit coins.

Next, FIGS. 7 to 12 show different embodiments of the present invention, and in each figure, the repulsion member is designated by the reference numeral 10.

In the embodiment shown in FIG. 7, the collision surface of the repulsion member 10 with the coin is formed as a trapezoidal protrusion, and the collision portion 13 of the repulsion member 10 is shown in FIG.
It is a flat surface with a width slightly wider than that of 2.

In the embodiment shown in FIG. 8, the surface of the repulsion member 10 that collides with the coin is formed as an arcuate protrusion, and the arcuate portion is used as the collision portion 14.

In the embodiment shown in FIG. 9, the surface of the repulsion member 10 that collides with the coin is cut diagonally, and the sharp end thereof is used as the collision portion 15.

In the tenth embodiment, the collision portion 16 of the surface of the repulsion member 10 that collides with the coin is formed on the diagonal of the collision surface.

In the embodiment shown in FIG. 11, two chevron-shaped protrusions 17 and 18 are formed on the surface of the repulsion member 10 that collides with the coin, and the tips of these protrusions serve as collision parts 19 and 20.

In the embodiment shown in FIG. 12, a groove 21 is formed on the surface of the repulsion member 10 that collides with the coin, and both ends of the groove 21 are
2 and 23 are collision parts.

As explained above, according to the present invention, in an apparatus in which the inserted coins are collided with a repulsive member and the inserted coins are distributed based on the difference in repulsive force due to the difference in the material of the inserted coins, the area where the coins of the repulsive member collide and contact. By making it smaller than the width of the coin, it is possible to reliably sort genuine coins and specified counterfeit coins, and since the area in contact with the hard part of the repulsion member is small, dust will not adhere to the part of the repulsion member in contact with the coin. This has the advantage that there is almost nothing to do, and it is possible to prevent incorrect sorting due to adhesion of dust, thereby making it possible to omit maintenance and inspection.

[Brief explanation of drawings]

1 and 2 are a front view and an operation diagram of a main part showing a conventional device, respectively; FIGS. 3 and 4 are a front view of a main part and a sectional view of FIG. 3 showing an embodiment of the present invention; Fig. 5 is a diagram of the operation of the device according to an embodiment of the present invention, Fig. 6 is a diagram of the operation of sorting out thin counterfeit coins, and Figs. 7 to 12 are perspective views of repulsion members showing different embodiments of the present invention. It is. 10: Repulsion member, 12, 13, 14, 15, 1
6, 19, 20, 22, 23: Collision part.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In a device that collides inserted coins with a repelling member and sorts the inserted coins based on the difference in repulsive force due to the difference in the material of the inserted coins, the collision portion of the repelling member where the inserted coins collide and come into contact with each other. A coin sorting device characterized in that the area of the coin is smaller than the width of input coins. 2 Utility Model Registration Scope of Claim 1. The coin sorting device according to claim 1, wherein the collision portion of the repulsive member is formed as at least one protrusion. 3 Utility Model Registration Scope of Claim 1. The coin sorting device according to claim 1, wherein the collision portion of the repulsion member is formed as an arcuate projection.