JPS62259325A - Switch for detecting magnetism detecting unit - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a magnetic detecting object detection switch, which operates the switch by moving the magnetic field of a permanent magnet as a magnetic detecting object such as a pachinko ball passes. The field of application is to detect the number of passages of a detection object.

(Prior Art) There are many types of switch devices that detect the passage of a magnetic detection object passing through a passageway. I can't find any type that operates the switch by pressing the switch.

(Problems to be Solved by the Present Invention) The present invention provides that when a magnetic body is brought close to two permanent magnets arranged so that their respective magnetic fields do not interfere with each other, the magnetic field may change depending on the manner in which the permanent magnets are arranged. We use instruments to confirm that it has the property of moving, and use this property to
The problem is to develop a switch that sensitively detects the passage of a magnetic detection object with the simplest and unprecedented configuration, and has a spherical shape like a pachinko ball,
Moreover, it is also possible to detect the number of magnetic detection objects that pass continuously.

(Means for Solving the Problems) The present invention aims to solve the problems mentioned in the previous section. Two permanent magnets are arranged in an inverted eight shape, and a magnetic switch is provided outside between the two permanent magnets, which is not affected by the magnetic field of each of the permanent magnets when a magnetic detection object does not pass through. The present invention relates to a magnetic detection body detection switch characterized in that the magnetic detection body is configured to sense the passage of a magnetic detection body and move so as to apply a magnetic field to the magnetic switch, thereby activating the switch.

A preferred embodiment of the present invention having the above configuration will now be described.

(Example) Figures 1 to 3 show an example of the present invention, in which Figure 1 is a perspective view, Figure 2 is a partially cutaway plan view, and Figure 3 is Figure 2A-
It is a longitudinal side view taken along the A line.

In the fj41-3 figures, 1 is a case and 2 is a case lid. A circular passageway 3 through which the magnetic detection body a shown in FIG. Let it happen. The mounting surface is designed so that a T-shaped printed circuit board 17 can be tightly fitted thereto, and the terminal protruding plate 18 of the circuit board can be tightly fitted onto the mounting surface.
It is surrounded by a periphery 97 with an opening 8 that can protrude outward. Protruding from the mounting surface 6 is a mounting seat 9 that supports a printed circuit board 17 and is provided with a protrusion 9a that collapses into a positioning hole provided in the board.

The hole wall 4 is formed with an inverted eight-shaped fitting blind hole 10.10 which approaches the passageway 3 on both sides of the undercut 5.

The case lid 2 is formed with a through hole 11 that matches the passageway described above and a back projection 12 that presses the printed circuit board 17, and is fixed to the case 1 with screws or the like inserted into the mounting hole 13. Two permanent magnets 14.14 with N and Si 4 poles opposite to each other were fitted into the blind fitting hole 10.10, and the contact portion 16 was exposed to the outside between the permanent magnets 14.14 on the printed circuit board 17. A printed conductive part 19 is provided with a reed switch 15, whose legs are passed through the lower surface of the printed circuit board 17, and which is provided on the lower surface of the printed circuit board 17 and continues to the terminal protruding plate 18.
．． Connect to 19 by soldering. reed switch 15
1 shows an example of the magnetic switch of the present invention.

(Operation of the present invention) Fig. 4.5 is an explanatory diagram explaining the present invention in detail,
When the magnetic detection object a does not pass through the passage 3, the permanent magnet 1
The magnetic circuit of 4.14 is as shown in FIG. 4, and the magnetic field does not affect magnetic switches such as the reed switch 15.

However, as shown in Fig. 5, when the magnetic detection object a passes through the passage 3, the magnetic field lines of the permanent magnets 14 and 14 move through the magnetic detection object a as shown in the figure, and the magnetic field of this movement is affecting the magnetic switch of switch 1544;
The contact portion 16 is operated to "close" (or "open").

(Effects of the Present Invention) As has been made clear from the above description, the present invention includes two permanent magnets 14 along the passage path 3 of the magnetic detection object a with one magnetic pole corresponding to the passage passage 3. .14 are arranged in an inverted eight shape, and a magnetic detection object a is placed outside the opening of the two permanent magnets.
A reed switch 15 is provided as an example of a magnetic switch that is not affected by the magnetic field of each permanent magnet, and the permanent magnet has a characteristic of sensing the passage of the magnetic detection object a and causing movement to exert a magnetic field on the magnetic switch. It is configured to operate a magnetic switch, for example, a ball such as a pachinko ball has a permanent magnet whose maximum diameter is a magnetic material.
However, since both ends where the diameter becomes smaller are magnetic and do not affect the magnetic field movement of the permanent magnet f4.14, even if the magnetic detection objects are continuous, the number of switches corresponding to the number of passages will be activated. The present invention has the effect of producing a detection switch with high sensitivity, preventing erroneous detection of numbers, and making it possible to manufacture a detection switch with a simple configuration.

[Brief explanation of drawings]

Figures 1 to 3 show an embodiment of the present invention, where Figure 1 is a perspective view, Figure 2 is a partially cutaway plan view, and Figure 3 is Figure 2A-
It is a longitudinal side view taken along the A line. FIG. 4.5 is an explanatory diagram of the basic principle of the present invention. a → Magnetic detector 1 → Case 2 → Case lid 3 → Passing path 14.14 → Mizuku magnet 15 → Reed switch 16 → Contact part 17 → Printed circuit board 19 → Printed conductive part 1 Figure 2

Claims (1)

[Claims] Two permanent magnets, each with one magnetic pole corresponding to the passage, are arranged in an inverted eight shape along the passage of the magnetic detection body, and the magnetic detection body is placed outside between the two permanent magnets. A magnetic switch is provided that is not affected by the magnetic field of each of the permanent magnets when the magnet does not pass, and the permanent magnet senses the passage of the magnetic detection object and moves to apply a magnetic field to the magnetic switch, thereby activating the switch. A magnetic detection object detection switch characterized by: