JPH0338754Y2 - - Google Patents

Description

[Detailed Description of the Invention] A. Field of Industrial Application The present invention relates to a magnetic sensing switch, and more specifically, it is used to detect fraudulent activities such as manipulating pachinko balls through glass using magnets during pachinko games. This invention relates to a magnetic sensing switch that is attached to the back side of a pachinko machine.

B. Prior Art Conventionally, a magnetic sensing switch that detects magnetic fields that are illegally applied to a pachinko machine consists of a pair of elastic magnetic material pieces that are placed facing each other with a certain overlap and a certain distance between them. A device in which the magnetic material piece is magnetized and can be moved toward and away from the magnet is known.

The magnetic sensor switch is installed parallel or perpendicular to the surface of the pachinko machine board in a position where it is not easily affected by magnetic fields from electronic components, etc., and when it senses magnetism, an indicator lamp in the control room lights up or other alarm means is activated. The system was designed to quickly detect fraud.

C. Problems to be Solved by the Invention The above-mentioned conventional magnetic sensing switch has a characteristic that the directivity is high in the direction in which the pieces of magnetic material face each other, and the directivity is low in the direction orthogonal thereto. As a result, the vicinity of the center of the switch becomes a blind spot where magnetic fields cannot be detected, resulting in the drawback that fraudulent activities cannot be detected within the range where magnetic fields cannot be detected.

D. Means for solving the problem In view of the above problems, the magnetic sensor switch of the present invention aims to improve the sensing ability by expanding the sensing range, and its configuration consists of a pair of elastic Two pieces of magnetic material are arranged facing each other with a certain overlap and spacing, and the pieces of magnetic material become magnetized in a magnetic field and can operate toward and away from each other. The opposite directions of the pieces should be approximately 90 degrees apart from each other.
They are arranged so as to maintain a phase difference of 100 degrees, and are connected in parallel and housed in a case.

E. Effect The magnetic sensing switch of the present invention has contacts that move toward and away from each other when the magnetic material is magnetized, and are arranged with a phase difference of 90 degrees in the opposing directions. With these contacts, blind spots can be compensated for and the sensing range will be even.

F. Embodiment An embodiment of the magnetic sensing switch according to the present invention will be described based on the drawings.

Fig. 1 shows a magnetic sensing switch 1 of the present invention, in which 2 is a pair of iron pieces 3 and 4 made of magnetic material, the tips of which are pressed and plated with gold, facing each other with a constant overlap and spacing. It is a normally open contact sealed in a glass tube 5 with an inert gas, and when a magnet is brought close to it, the iron pieces 3 and 4 are magnetized to N and S poles, respectively, and the gold-plated tips attract each other and come into contact. , the contacts are configured to close.

These normally open contacts 2 are made into a set of two, and are fixed by soldering onto an epoxy board 6 that has been etched to form parallel wiring, with a phase difference of 90 degrees in the opposing directions of the magnetic material pieces. , connect the lead wire 7.

Next, this epoxy board 6 is fitted into a synthetic resin case body 8, covered with a lid 9, and fixed with bolts.

The magnetic sensing switch 1 is fixed so as to stand upright at approximately the center of the back side of the pachinko machine P, and is used as a switch for operating an indicator lamp.
(Second figure shown) The magnetic sensing switch 1 arranged in this way is connected to the third
The broken line in the figure shows the pattern of magnetic lines of force, and it was impossible to detect the magnetic field near the center with a single directional switch. However, by using the sensing switch of this invention, it is possible to can be covered.

In this embodiment, the magnetic sensing switch is installed approximately at the center of the back side of the pachinko machine, but the switch is not limited to this embodiment as long as it is not affected by the magnetism of other electronic components. Therefore, if it is possible to predict in advance the location where fraudulent activity is likely to occur, a higher effect can be obtained by installing the device near that location. Further, in this embodiment, the two contacts are arranged with a phase difference of 90 degrees, but the same effect can be obtained even if they are not necessarily at right angles.

G. Effect The magnetic sensing switch of the present invention cannot sense the magnetism of the directional contacts because the contacts that move toward and away from each other by magnetism are arranged in a single case with the direction of their high sensing power substantially perpendicular. There are no blind spots and the entire surface of the pachinko board can be monitored.

Also, by storing the parts in one case,
It can be installed directly at the conventional mounting location, and can be easily installed without having to create a new mounting location or spanning multiple locations.

With such a simple configuration, it is possible to reliably detect magnetism, and fraudulent acts can be prevented, which will bring great benefits to the industry.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view of a sensing switch, FIG. 2 is an illustration of its installation, and FIG. 3 is an illustration of a magnetic sensing range. 1... Magnetic sensing switch, 2... Normally open contact,
3, 4... Iron piece, 5... Glass tube, 6... Epoxy board, 7... Lead wire, 8... Case body, 9
... Lid body, P ... Pachinko machine.

Claims (1)

[Scope of utility model registration request] A pair of elastic magnetic material pieces are arranged facing each other with a certain overlap and spacing, and the magnetic material pieces are magnetized in a magnetic field and can operate toward and away from each other. A magnetic sensing switch characterized in that the magnetic material pieces are arranged with a phase difference of approximately 90 degrees maintained in opposing directions, and are connected in parallel and housed in a case.