JPH02306517A - Pachinko ball sensor - Google Patents

Abstract

PURPOSE:To eliminate ill influence of external factors without causing wear of contacting parts and chattering, etc., which is likely with contact type, by displacing a movable piece with a pachinko ball (Japanese pinball) passing through a sensing hole, and by changing the distance of a Hall element and magnetic resistance element from the magnetized portion. CONSTITUTION:When a sensing hole 3 is free from passage of any pachinko ball 2, a movable piece 5 is energized toward the hole 3 by a leaf spring 7, and a ball sensing part 5a at one end is protruding into the hole 3. On the other hand, the magnetized portion 10 of this movable piece 5 at its other end is positioned apart from a Hall element 6, which generates Hall electromotive force, and passage of the sensing hole 3 allows the mentioned sensing part 5a of movable piece 5 to push the pachinko ball 2 to cause intrusion of the piece 5 into a mounting hole 8 against the force of the leaf spring 7. With compressive deformation of this leaf spring 7 the movable piece 5 displaces toward the Hall element 6 to permit the magnetized portion 10 to approach the Hall element 6, and thus a magnetic field and electromotive power are generated.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a pachinko ball detection sensor that is placed in a winning opening of a pachinko machine and used to detect the passage of pachinko balls.

<Prior art> This type of conventional sensor is provided with a detection hole that allows pachinko balls to pass through, and when a pachinko ball passes through this detection hole,
It detects this and outputs a detection signal. Various methods have been proposed to detect the passage of pachinko balls.
Currently, contact type, optical type, electromagnetic induction type, etc. are in practical use.

Among these, the contact type detects the passage of a pachinko ball through a detection hole by displacing a movable piece by a pachinko ball and turning a contact mechanism on and off. In addition, in the optical type, pachinko balls are detected by blocking the optical path between the light emitting element and the light receiving element and changing the amount of light received by the light receiving element, and in the electromagnetic induction type, the pachinko balls are detected by the LC. The pachinko ball detection operation is performed by approaching the oscillation coil of the high frequency oscillation circuit and changing the oscillation state of the oscillation circuit.

<Problems to be Solved by the Invention><<Problems to be Solved by the Invention>> However, the contact type has shortcomings such as short service life due to wear of the contact portion and chattering phenomenon.

In addition, the optical type is susceptible to the influence of disturbance light, while the electromagnetic induction type is susceptible to the influence of radio waves, each of which poses the problem of erroneous operation or failure.

This invention was made with a focus on the above problem, and provides a novel pachinko ball detection sensor that has a long life and is less susceptible to external factors by detecting the passage of pachinko balls through a detection hole using a magnetic method. The purpose is to

<Means for Solving the Problems> In order to achieve the above object, - the pachinko ball detection sensor of the invention described in clause 1 includes a movable piece on one side of the detection hole having a hole diameter that allows pachinko balls to pass through. It was decided to provide one end of the movable piece with its one end protruding and retracting from the detection hole, and at the other end of the movable piece and a position opposite thereto, a Hall element was provided on one side and a magnetized part was provided on the other side.

Furthermore, in the pachinko ball detecting section of the invention as set forth in claim 2, a movable piece is provided on one side of the detection hole having a hole diameter through which pachinko balls can pass, and one end of the movable piece is arranged in the detection hole. At the same time, the other end of the movable piece and its opposing position are
It was decided to provide a magnetoresistive element on one side and a magnetically charged part on the other.

Furthermore, in the pachinko ball sensor of the invention described in claim 3, in order to prevent the pachinko balls passing through the detection hole from being magnetized, the movable piece is made of a non-magnetic material of ↑゛. I made it.

When the pachinko ball does not pass through the detection hole, the drop portion of the two movable pieces protrudes into the detection hole, and the movable piece is displaced two degrees in the direction of the detection hole, so the Hall element and the magnetic The resistive elements are separated.

When the pachinko ball passes through the detection hole, the movable piece is pushed by the pachinko ball and is displaced in the opposite direction, so the Hall element, magnetic resistance, and element approach the magnetically charged part. As a result, an electromotive force is generated in the Hall element due to the Hall effect,
Furthermore, in the magnetoresistive element, the passing of a pachinko ball is detected because the perforation resistance value changes due to the magnetoresistive effect.

Since pachinko ball detection is performed using a magnetic method, wear and chattering of the contact points are not a problem as with contact type systems, and unlike optical and electromagnetic induction systems, they are subject to negative effects from external factors. Never.

In addition, if the movable piece is made of a non-magnetic material such as synthetic resin, the magnetic action will not reach the pachinko balls passing through the detection hole, and there is no fear that the pachinko balls will be magnetized.

<Embodiment> FIG. 1 shows the appearance of a pachinko ball detection sensor according to an embodiment of the present invention. .

This pachinko ball detection sensor is 1. This device is installed inside the winning opening of a pachinko machine, and has a thin plate-like synthetic resin case body 1 with a detection hole 3 having a hole diameter that allows pachinko balls 2 to pass through in the thickness direction. There is.
, this case body 1 has a detection hole 3. The negative side part is a housing part 4 for incorporating components, and inside this housing part 4, as shown in FIGS. 2 and 3, a movable piece 5, a Hall element 6, and a leaf spring 7 are installed. Each component is housed and arranged.

The movable piece 5 is formed into a rod shape from a synthetic resin material such as plastic, and is disposed within a mounting hole 8 formed in the case body l so as to be able to reciprocate. One end of the mounting hole 8 communicates with the detection hole 3 in a direction perpendicular to the detection hole 3, and the Hall element 6 is fixed to the other end. The movable piece 5 has one end as a ball detection part 5a that appears and retracts from the detection hole 3, and a permanent magnet 9 bonded to the other end to form a magnetized part 10 on the surface facing the Hall element 6. Therefore, when the pachinko ball 2 does not pass through the detection hole 3, the ball detection part 5a of the movable piece 5 protrudes into the detection hole 3, and the magnetized part 10 is separated from the Hall element 6, but the pachinko ball 2 does not pass through the detection hole. 3, as shown in FIG. 4, the ball detection part 5a is pushed and retreats from the detection hole 3, and the magnetized part 10 approaches the Hall element 6.

In addition, in this embodiment, the pachinko ball 2 passing through the detection hole 3
Although the movable piece 5 is made of a non-magnetic material in order to prevent magnetic action from exerting on the material, the movable piece 5 is not limited to this.
Of course, it is also possible to form the entire body with a bar magnet.

A known Hall IC is used as the Hall element 6, and an output line 11 and a ground line 12 are drawn out from the rear of the case body 1, thereby making it possible to detect the electromotive force due to the Hall effect.

The leaf spring 7 is housed in a spring mounting chamber 13 that communicates with the mounting hole 8, and is connected to the movable piece 5 so as to always bias the movable piece 5 toward the detection hole 3. Therefore, when the pachinko ball 2 passes through the detection hole 3, the movable piece 5 compresses and deforms the leaf spring 7 and is displaced in the direction of the Hall element 6. After the pachinko ball 2 passes through the detection hole 3, the movable piece 5 5 is a device that is displaced in the direction of the detection hole 3 by the restoring force of the leaf spring 7. Note that the plate spring 7 can also be replaced with a coil spring.

Figure 5 shows another embodiment of this invention.
A magnetoresistive effect 14 is used instead of the Hall element 6 in the embodiment.
′ is used. When this magnetoresistive element 14 is subjected to the action of a magnetic field, its resistance value □ changes due to the magnetoresistive effect, and this change can be detected by the output wire 11 and the ground wire 12 drawn out from the case body 1. Note that the other configurations of this embodiment are similar to those of the first embodiment, and corresponding configurations are given the same reference numerals and their explanations will be omitted here.

FIG. 6 shows yet another embodiment of the invention.

In this embodiment, the Hall element 6 fixed in each of the above embodiments is
While the magnetized part 10 is displaced with respect to the magnetoresistive element 14, the permanent magnet 9 is fixed, and the Hall element 6 and the magnetoresistive element 14 are attached to the movable piece 5. The Hall element 6 and the magnetoresistive element 1 are
4 is displaced.

Next, the operation of the first embodiment will be explained.

When the pachinko ball 2 is not passing through the detection hole 3, the movable piece 5 is urged in the direction of the detection hole 3 by the leaf spring 7, and the ball detection portion 5a at one end protrudes into the detection hole 3. There is. On the other hand, the magnetized part 1o at the other end of the movable piece 5 is located away from the Hall element 6, so the magnetic field of the magnetized part 1o does not reach the Hall element 6, and the Hall element 6 does not generate a ball electromotive force. .

Next, when the pachinko ball 2 passes through the detection hole 3, the ball detection part 5a of the movable piece 5 is pushed by the pachinko ball 2, so the movable piece 5 moves into the mounting hole 8 against the spring force of the leaf spring 7. Pushed in. As a result, the leaf spring 7 is compressed and deformed, and
The movable piece 5 is displaced in the direction of the Hall element 6, and the magnetized portion 10 approaches the Hall element 6. Therefore, the magnetic field of the magnetized portion 1° reaches the Hall element 6, the Hall element 6 generates a Hall electromotive force, and the passage of the pachinko ball 2 is detected.

When the pachinko ball 2 passes through the detection hole 3, the movable piece 5 moves back toward the detection hole 3 due to the restoring force of the deformed leaf spring 7, and the ball detection part 5a protrudes toward the detection hole 3, and the magnetized part 10 moves away from the ball element 6.

Note that the same operation is performed in the embodiment using the magnetic resistance element 14 (FIG. 5) and the embodiment in which the permanent magnet 9 is fixed (FIG. 6) to detect the passage of the pachinko ball 2.
The explanation thereof will be omitted here.

<Effects of the Invention> As described above, the present invention detects pachinko balls by displacing the movable piece by the pachinko balls passing through the detection hole and changing the distance of the Hall element or the magnetoresistive element to the magnetized part. Therefore, wear and chattering of the contact points do not become a problem as in the contact type, and unlike optical or electromagnetic induction types, they are not adversely affected by external factors and do not cause malfunctions.

In addition, since the movable piece is made of non-magnetic material such as synthetic resin, the magnetic effect does not reach the pachinko balls passing through the detection hole.
It has many remarkable effects, such as no risk of magnetizing pachinko balls.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the external appearance of a pachinko ball detection sensor according to an embodiment of the present invention, Fig. 2 is a horizontal sectional view of the embodiment shown in Fig. 1, and Fig. 3 is a line taken along the line ■-■ in Fig. 2. A cross-sectional view along
Figure 4 is a horizontal sectional view showing the state of pachinko ball detection;
6 are horizontal sectional views showing other embodiments of the present invention.

Claims (3)

[Claims] (1) A detection hole is provided with a diameter that allows pachinko balls to pass through, and a movable piece is disposed on one side of the detection hole so that one end thereof can freely move in and out of the detection hole, and the other end of the movable piece is disposed on one side of the detection hole. A pachinko ball detection sensor is provided with a Hall element on one side and a magnetically charged part on the other side. (2) A detection hole is provided with a diameter that allows pachinko balls to pass through, and a movable piece is disposed on one side of the detection hole so that one end thereof can freely move in and out of the detection hole, and the other end of the movable piece is disposed on one side of the detection hole. A pachinko ball detection sensor is provided with a magnetic resistance element on one side and a magnetically charged part on the other side. (3) The pachinko ball detection sensor according to claim 1 or 2, wherein the movable piece is made of a non-magnetic material such as synthetic resin.