JPH0445090Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an exit escalator of a coin dispensing device used in a vending machine or the like, and particularly to a backflow prevention mechanism thereof.

(Prior Art) Conventionally, a hopper for storing a large number of coins is provided with a coin feeding disk rotatably installed on one side at an angle with respect to the horizontal. When the coin feeding disc is rotated, the coins in the hopper are picked up one by one by each engaging piece and sent upward, and the coins are sent upward by the coin feeding disc. For example, a Japanese Patent Application Publication No.
In a coin dispensing device as described in Publication No. 57-19891, an upwardly extending gutter-like outlet escalator is connected to the outlet chute, and the coins are transferred into the egress escalator by the dispensing action of a coin dispensing disk, for example. It is known that the coins are pushed up and delivered to the upper coin receiving opening by utilizing mutual pushing action.

In conventional exit escalators of this type, coins pushed up into the gutter-like escalator descend into the escalator due to the weight of the coins, for example, when the coin feeding disc stops, and as a result, the total number of coins located in the escalator decreases. When the height is reduced and therefore the position of the coin at the upper end is lowered and the coin delivery device is activated again, the counting means provided at the exit of the coin delivery device and the counter provided at the top exit of the escalator. There is a problem that the count value with the means does not match.

Conventionally, as a countermeasure to this problem, a leaf spring is pressed against the side of the coin in the escalator through a window provided on one side plate of the escalator to prevent the coin from descending.

(Problem to be solved by the invention) However, with such a coin backflow prevention means using a leaf spring, if the pressing force of the leaf spring is increased to the extent that it can reliably prevent the coin from falling, the coin will There was a problem in that the resistance to pushing up was too large and, therefore, a reliable backflow prevention effect could not be obtained.

The present invention aims to solve these problems and provide a backflow prevention means that can reliably prevent the backflow of coins without adversely affecting the coin pushing up action.

(Means for Solving the Problems) According to the present invention, as shown in FIG. As shown in FIG. 3, an opening window 8 is provided on one side plate 4 of the parallelly spaced opposing side plates 4 and 5 of the escalator 3, and a backflow that can roll and come into contact with the side surface of the coin A in the exit escalator 3 passes through the opening window 8. A prevention ball 9 is attached to the ball guide groove 1 of the ball holding member 10 attached to the outside of the side plate 4 as shown in FIG.
A ball guide groove 1 is held within the escalator so as to be movable up and down in the length direction of the escalator, and faces the surface a of the side plate 4.
The downward extension b of the inclined contact surface 12 of No. 1 is at an angle α of 5 to 30°, particularly preferably 8 to 15°, with respect to the side plate surface a.
It is characterized by being configured so that they intersect at an angle.

(Function) According to the above-described configuration of the present invention, when the coin A is pushed up into the exit escalator 3 by the coin dispensing operation of the coin dispensing device 1, the ball 9 that rolls into contact with the side surface of the coin A is moved by the ball holding member. 10 into the ball guide groove 11 in the direction of expansion of the inclined contact surface 12, thereby allowing the coin A to be pushed up into the exit escalator 3 without resistance.

On the contrary, when the coin A in the exit escalator 3 tries to descend when the coin dispensing device 1 is stopped, the ball 9 in contact with the side surface of the coin A moves downward in the convergence direction of the inclined contact surface 12. However, the coin A of the ball 9 is pressed against the opposing side surface 5 to create a wedge action, thereby reliably preventing the coin A from falling.

Inclined contact surface 1 of ball guide groove 11 according to the present invention
The inclination angle α of the side plate 2 of No. 2 to the surface a is 5 to 30°.
The reason for this is that if the inclination angle α is smaller than 5°, the ball tends to move up and down, and a reliable coin downward stopping action, that is, a ball restraining action cannot be obtained.
If this value is exceeded, the resistance to push up the coin becomes large, causing a problem that the operating load becomes large.

(Example) An example of the present invention is shown in FIGS. 1 to 4.
In the example shown in the drawings, the exit escalator 3 connected to the exit chute 2 of the coin dispensing device 1 and extending upward has opposing side plates parallel to each other and spaced apart at intervals corresponding to the thickness of the processed coins A, as shown in FIG. 4 and 5 and both end plates 6 and 7 which limit the width of the coin feeding passage 13 defined between these side plates in accordance with the diameter of the coin A to be processed, forming a gutter-like shape.

On the other hand, the side plate 4 is provided with an opening window 8 extending in the length direction of the exit escalator in its substantially central member, and the ball holding member O is mounted in the slot 1 of the side plate 4.
4 and screws 15 so that the position can be adjusted.

A ball holding member 10 attached to the opening window 8 of the side plate 4 is provided with an elongated ball guide groove 12 in the length direction of the exit escalator 3, and the ball guide groove 11 facing the surface a of the side plate 4 makes oblique contact with the ball guide groove 12. Side 1
For example, the downward extension line b of 2 is 10° with respect to the side plate surface a.
The configuration is such that they intersect at an inclination angle α.

A steel ball 9 having a diameter slightly smaller than the radius of curvature of the ball guide groove 11 is provided in the ball guide groove 11 of the ball holding member 10 so as to be movable in the vertical direction. It is configured so that it rolls into contact with the side surface of the coin A inside through the opening window 8.

In the illustrated example, the length of the ball guide groove 11 in the longitudinal direction of the escalator 3 is made sufficiently long, thereby making it possible to use the ball holding member 10 in common for coins of various different thicknesses. making it possible.

(Effects of the invention) According to the invention, it is possible to provide a backflow prevention means that has low resistance to pushing up coins and can reliably prevent backflow of coins.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the exit escalator according to the present invention attached to a coin dispensing device, Fig. 2 is an enlarged front view of the part of the exit escalator shown in Fig. 1 where the backflow prevention means is attached, and Fig. 3 is the same as that shown in Fig. 2. FIG. 4 is a sectional view taken along the line - of FIG. 2. 1... Coin sending device, 2... Exit chute, 3
... Exit escalator, 4 ... Side plate, 8 ... Opening window, 9 ... Backflow prevention ball, 10 ... Ball holding member, 11 ... Guide groove, 12 ... Inclined contact surface.

Claims (1)

[Scope of utility model registration request] In an exit escalator of a coin dispensing device connected to an exit chute of the coin dispensing device and erected to extend upward, an opening window 8 is provided in one side plate 4 of the opposing side plates defining a coin feeding path of the exit escalator.
A backflow prevention ball 9 that can roll and come into contact with the side surface of the coin A in the exit escalator 3 through the opening window 8 is installed in the ball guide groove 11 of the ball holding member 10 attached to the outside of the side plate 4. The downward extension line b of the inclined contact surface 12 of the ball guide groove 11 facing the surface a of the side plate 4 is 5 to 50 mm relative to the side plate surface a.
Exit escalator of a coin dispensing device, characterized in that it is configured to intersect obliquely at an angle α of 30°, particularly preferably between 8 and 15°.