JPH0524380Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The invention has a pair of opening/closing wings that are pivoted on both sides of the front surface of a ball inlet formed on a mounting plate so that they can freely stand up and tilt.
This invention relates to a safe ball receptacle for a pachinko machine in which the rising and tilting of the opening/closing wings are controlled by a rotating body that rotates through contact with the ball.

[Prior Art] Conventionally, as shown in FIGS. 7 and 8, a Hall element 103 is fixed to a box frame 102 that pivotally supports a rotary body 101, and a hall element 103 is fixed to a box frame 102 that pivotally supports a rotating body 101.
A permanent magnet 107 that generates a Hall voltage corresponding to the Hall element 103 is provided on the lever member 106 which is rotated upon contact with the ball flowing out from below of 05, so that the permanent magnet 107 is inserted between the opening and closing blades 104, 104. A safe ball socket which electrically detects the ball is described in Japanese Patent Application No. 1983-291309 filed by the present applicant.

[Problems to be Solved by the Invention] By the way, the above-mentioned lever member 106 has its upper end rotatably supported by a shaft 108 and its lower end is provided with a permanent magnet 107, so that it cannot be affected by external impact. There was a problem in that when the ball was rotated, a pendulum movement occurred, resulting in a switch operation even if the ball did not enter between the opening and closing wings 104, 104.

Further, since the Hall element 103 and the lever member 106 are separately attached to the box frame 102, the assembly work is complicated and the manufacturing cost is high.

The present invention was devised in view of the above circumstances.

[Means for Solving the Problems] The structure of the present invention for solving the above problems will be explained using FIGS. 1 to 6 corresponding to embodiments.

In the present invention, a pair of opening/closing wings 3, 3 are pivotally supported on both sides of the front surface of a ball inlet 2 formed on a mounting plate 1, so that they can be freely raised and tilted, and a chucker 6 is mounted below them. The rotating body 12 is located in the box frame 8 at the rear of the upper part of the ball inlet 2, rotates by a ball passing between the opening and closing wings 3, 3, and controls the upright and tilting of the opening and closing wings 3, 3. In the safe ball receptacle, a ball detection device 29 is provided in association with a ball passage 9 leading to a ball inlet 2 formed below the box frame 8. The detection device 29 has a main body 30 made of a non-magnetic material, and a lever member 36 provided with a permanent magnet 38 and a ball contact portion 35 is rotatably supported by a vertical shaft 37, and is attracted to the permanent magnet 38. A magnetic piece 39 is provided to prevent the lever member 36 from rotating inadvertently, and when the ball flowing through the ball passage 9 contacts the ball contact portion 35 and the lever member 36 rotates, the magnetic piece 39 corresponds to the permanent magnet 38. This configuration includes a Hall element 41 that generates a Hall voltage.

[Function] The ball detection device 29 is attached to the side wall of the box frame 8 with the ball contact portion 35 of the lever member 36 facing the ball path 9. In this state, the lever member 36
A permanent magnet 38 corresponds to the magnetic piece 39 and prevents the lever member 36 from rotating inadvertently. When a ball enters between the opening and closing wings 3 in this state, it enters the ball passage 9 from the lower part of the ball inlet 2, contacts the ball contact portion 35, and flows rearward while rotating the lever member 36. Due to the rotation of the lever member 36, the permanent magnet 38 generates a Hall voltage in response to the Hall element 41,
Thereby, the ball that has entered between the opening and closing wing pieces 3, 3 is reliably detected.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings. In the figure, reference numeral 1 denotes a mounting plate, on which a ball inlet 2 is provided, and on both sides of the front side of the ball inlet 2 are a pair of freely tiltable opening/closing blades in the shape of a parallel upright solid line in Figure 2 and an inverted figure eight shape shown in chain lines in the same figure. 3, 3 are attached by shafts 4, 4. The center of gravity of the opening/closing wings 3, 3 is set outward from the respective shafts 4, 4, and protrusions 5, 5 protruding from the rear edge of each lower end are projected into the ball inlet 2. Reference numeral 6 denotes a chucker fixed to the mounting plate 1 so as to cover the lower side of the shafts 4, 4 of the opening/closing wings 3, 3, and a ball guiding bottom piece 7 is provided on this chucker in communication with the lower side of the ball inlet 2. Reference numeral 8 is a box frame connected to the back surface of the mounting plate 1 at the rear of the ball inlet 2, and a ball passage 9 is provided on the front lower surface of this box frame, and a ball introduction opening 10 is formed on the rear upper surface.
Further, a spherical outflow opening 11 is formed in one side wall.

12 is a box frame 8 located at the rear of the upper part of the ball entrance 2.
This rotating body 12 is provided with three ball engaging pieces 14a to 14c that protrude in the radial direction at equal intervals from the center. Engagement walls 15, 15 are provided in the portion. Each of the ball engaging pieces 14a to 14c is always placed in a position where one of the ball engaging pieces 14a to 14c is always in contact with the ball that passes between the opening and closing wings 3 and 3 and enters the ball inlet 2. Moreover, the engagement wall 15,
15 holds the opening/closing wings 3, 3 in the upright position shown by solid lines in FIG. Reference numeral 16 denotes a leaf spring whose upper end is fixed to the back surface of the mounting plate 1 and whose free end is pressed against one of the ball engaging pieces 14a to 14c from the rear of the rotating body 12. This is to prevent

Reference numeral 17 denotes a lever actuating body that is freely swingably supported on a horizontal shaft 18 extending across the box frame 8 at the rear part of the rotating body 12, and a ball engaging piece that is located below the horizontal shaft 18 and stops at the rear. A feed claw 19 that engages with the rotor 14c to rotate the rotating body 12 is provided in a protruding shape, and the horizontal shaft 18
A ball receiving part 20 is provided below the introduction opening 10 of the box frame 8 at the rear of the box frame 8. Further, a groove-shaped engagement recess 21 is provided above the horizontal shaft 18. The upper surface of the ball receiving part 20 is formed as an inclined surface facing the outflow opening 11. The lever actuating body 17 is equipped with a weight 22 below the horizontal shaft 18, so that the lever actuating body 17 is always operated at the fourth position.
It is rotated and held in a substantially horizontal position as shown by the solid line in the figure. 23
is a stopper formed on the box frame 8.

Reference numeral 24 denotes a movable restraint member rotatably supported on a horizontal shaft 25 extending over the box frame 8 at the upper part of the lever operating body 17, and the lever operating body 17 is engaged with the lever operating body 17 below the horizontal shaft 25. Engagement part 2 that engages with recess 21
6 is provided in a hanging shape, and a ball contact portion 27 facing the introduction opening 10 of the box frame 8 is formed in a protruding shape behind the horizontal shaft 25. The movable restraining member 24 is connected to the horizontal shaft 2
A weight 28 is provided below the lever actuating body 17, and the weight 28 is always urged to rotate downward, and as shown in FIG. prevent. The movable restraining member 24
The engaging portion 26 of the lever actuating body 17 and the engaging recess 21 of the lever actuating body 17
Each engagement surface is formed as a circular arc surface centered on the horizontal axis 25.

In the safe ball receptacle having such a structure, when the opening and closing wings 3, 3 are upright as shown by the solid lines in FIGS. The rotating body 12 is guided by the guiding bottom piece 7 of
The ball contacts the ball engaging piece 14a and flows out into the ball passage 9 while rotating the rotating body 12. And the leaf spring 16
The pressure contact action prevents excessive rotation of the rotating body 12, and each time the ball enters between the opening and closing blades 3, 3, the rotating body 12 is rotated by an angle between the ball engaging pieces 14a to 14c (120 in this embodiment). degree) Correctly regulate rotation. On the other hand, the opening/closing blades 3, 3 tilt due to their own weight as shown by the chain lines in FIG. do. Thereafter, in the same way, each time the ball enters between the opening and closing wings 3, 3, the rotating body 12 rotates, and the protrusions 5, 5 of the opening and closing wings 3, 3 are engaged with the engaging walls 15, 15 of the rotating body 12. It stands up, and when the engagement is released, the tilting motion occurs without any disturbance.

Furthermore, when the opening/closing wings 3, 3 are upright, if a ball enters through the introduction opening 10 of the box frame 8, it contacts the ball contact piece 27 and rotates the movable restraining member 24 as shown by the chain line in FIG. While moving, it is guided to the ball receiving part 20 of the lever operating body 17. This rotation of the movable restraining member 24 causes the engaging portion 26 to slide off the arcuate surface of the engaging recess 21 of the lever actuating body 17, thereby releasing the restraint of the lever actuating body 17. Therefore, the ball swings the lever actuating body 17 as shown by the chain line in FIG. Rotate and tilt the opening/closing blades 3, 3. When the ball flows outward, the lever operating body 17 and the movable restraint member 24
are returned to the state shown by the solid line in FIG. 4 by the action of the weights 22 and 28, respectively.

According to the present invention, the ball detection device 29 is mounted at the lower part of one side wall of the box frame 8 and in correspondence with the ball passage 9. Ball detection device 29
As shown in FIGS. 5 and 6, the main body 30 is made of synthetic resin and has a rectangular shape. A groove-shaped opening 31 is formed on the side surface of the main body 30 facing the ball passage 9. Additionally, a mounting hole 32 is provided on the top surface of the main body 30.
A mounting piece 33 is formed, and this mounting piece 3
3 is brought into contact with the side wall of the box frame 8 and fixed with screws 34. A plate-shaped lever member 36 is rotatably mounted in the main body 30 by a vertical shaft 37 with the ball contact portion 35 protruding from the opening 31. This lever member 36 is fixedly equipped with a permanent magnet 38, and this permanent magnet 38 and the main body 30
Due to mutual attraction with the magnetic piece 39 fixed to the ball contact portion 35, the ball contact portion 35 is always forced to be placed at the position shown by the solid line in FIG. 6 facing the ball path 9.

Further, a Hall element 41 is fixed to the main body 30 via a wiring board 40. The Hall element 41 is
This utilizes the so-called Hall effect, in which when a current is passed through the element surface (semiconductor thin piece) and a magnetic field is applied in a direction perpendicular to the flow, a voltage is generated in a direction perpendicular to the current and magnetic field. The position of the permanent magnet 38 is selected so that when the lever member 36 contacts the portion 35 and rotates, the permanent magnet 38 faces the element surface of the Hall element 41.

According to the present invention configured as described above, the sixth
When the ball contact portion 35 of the lever member 36 faces the ball path 9 as shown by the solid line in the figure, the permanent magnet 38 is located behind the Hall element 41.
The magnetic field is not applied to the element surface of the Hall element 41, and no Hall voltage is generated. In addition, in this state, even if an external impact is applied, the rotation of the lever member 36 is prevented by the mutual attraction between the permanent magnet 38 and the magnetic piece 39. A malfunction in which a magnetic field is applied to the Hall element 41 due to the approach of the magnet 38 is completely prevented.

On the other hand, when a ball enters between the opening and closing wings 3 and 3 in this state, the ball falls into the chucker 6, enters the ball passage 9 from the lower part of the ball inlet 2, comes into contact with the ball contact portion 35, and is brought into contact with the lever member 36. Rotate it backwards as shown by the chain line in Figure 6. As a result, the permanent magnet 38 applies a magnetic field to the element surface of the Hall element 41, and the Hall element 41 generates a Hall voltage. Then, when this Hall voltage is taken out as a differential output through a bridge with an integrated resistor and passed through an amplifier circuit, an analog output is obtained, and this analog output is used to electrically detect the ball that has entered between the opening and closing blades 3. That's what I do. When the ball is released from contact with the ball contact portion 35, the lever member 36 is rotated back to its original position as shown by the solid line in FIG. 6 by the attraction of the permanent magnet 38 and the magnetic piece 39.

[Effects of the invention] As described above, according to the invention, by simply screwing the ball detection device 29 in connection with the ball passage 9 leading to the ball inlet 2, it is possible to detect a ball that has entered between the opening and closing wings 3, 3. This makes it possible to provide a safe ball receptacle equipped with a means for electrically detecting the electric current, which is easy to manufacture and can significantly reduce costs.

In addition, the ball detection device 29 always uses the lever member 36
are held so as not to rotate due to the mutual attraction between the permanent magnet 38 and the magnetic piece 39, so there is no malfunction at all even when subjected to external impact, and the opening/closing blades 3, 3 It is possible to accurately and reliably electrically detect a ball that has entered between the balls. Further, by using the Hall element 41, it can be operated in a lower magnetic field than, for example, a reed switch, and there is no fear of damage. Furthermore, by selecting the position so that the element surface of the Hall element 41 is perpendicular to the game board, there are special features such as being completely free from the influence of the magnetic field of magnets that are brought close to the game board for fraudulent purposes. The effect is produced.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a perspective view as seen from the back, FIG. 2 is a front view partially cut away, and FIG. 3 is a plan view partially cut away. , Fig. 4 is a central vertical sectional side view, Fig. 5 is a perspective view of the ball detection device, Fig. 6 is a partially sectional plan view of the ball detection device to explain its function, and Fig. 7 is a conventional safe ball holder. A perspective view of the mouthpiece, FIG. 8 is a side view of the safe ball socket of FIG. 7. 1... Mounting plate, 2... Ball inlet, 3, 3... Opening/closing wing piece, 6... Chucker, 8... Box frame, 9... Ball passage, 12... Rotating body, 29... Ball detection device ,3
0...Main body, 35...Ball contact portion, 36...Lever member, 37...Vertical shaft, 38...Permanent magnet, 39...
...Magnetic piece, 41...Hall element.

Claims (1)

[Utility model registration claim] A ball safe receiver is constructed by supporting a pair of opening and closing wings on both sides of the front of a ball entrance formed in a mounting plate, which are free to stand up and tilt, with a checker attached below them, and supporting a rotor located behind the upper part of the ball entrance within a box frame on the back of the mounting plate, which rotates when a ball passes between the opening and closing wings and controls the standing up and tilting of the opening and closing wings, and a ball detection device is provided in association with a ball passage leading to the ball entrance formed below the box frame, and the detection device:
A safe ball receiver for a pachinko machine is characterized in that a lever member having a permanent magnet and a ball contact portion is rotatably supported by a vertical shaft on a main body formed of a non-magnetic material, a magnetic piece is provided which attracts the permanent magnet to prevent the lever member from rotating accidentally, and a Hall element is further provided which generates a Hall voltage in response to the permanent magnet when a ball flowing through the ball passage comes into contact with the ball contact portion and the lever member rotates.