JPH08299539A - Pachinko ball hitting device - Google Patents

Abstract

PURPOSE: To dispense with a sensor to detect the motion of a hammer and to easily perform assembling and miniaturization by directly detecting the rotation of a rotor by providing a magnetic sensor in a stepping motor and operating the solenoid of a ball sending device based on a detection signal. CONSTITUTION: The stepping motor 20 is constituted in such a way that a coil 25 is arranged on the inner periphery of a housing 24, and also. the rotor 27 consisting of a ferrite magnet is fixed on a rotary shaft 23 supported with a bearing 26. A rotating magnetic field is generated around the rotor 27 by a step current permitted to flow from a terminal 28 to the coil 25. and the rotary shaft 23 is rotated. While, the magnetic sensor 40 consisting of a Hall element is installed on the rear terminal part of the rotor 27. On the other hand, a magnetizing piece 42 is fixed on the rear terminal part of the rotor 27, and it is magnetized so as to be sensed by the magnetic sensor 40. In this way, the solenoid which operates the ball sending device by the signal of the magnetic sensor 40 is driven.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric pachinko ball launching device for a pachinko machine.

[0002]

2. Description of the Related Art There have been various types of electric pachinko ball launchers, for example, a stepping motor of 100 rpm is provided with a cam piece on its rotary shaft, and a mallet urged by an elastic spring such as a coil spring is used. One of them is that the mallet is reciprocated by engaging with the rotation of the cam piece so that the pachinko ball on the launch rail can be hit and fired. The pachinko ball launching device is provided with a solenoid for sending the pachinko ball from the ball tray to the launch rail and a magnetic sensor for detecting the movement of the mallet, and the solenoid is actuated by the signal from the magnetic sensor to cause the mallet to reciprocate once. One pachinko ball is sent to the launch rail.

[0003]

In the conventional pachinko ball launching apparatus, a magnet is fixed to a part of the cam piece or mallet, and a magnetic sensor capable of detecting the approach and separation of the magnet is mounted on a mounting board. However, since this requires a space for assembling, there is a problem that it hinders the assembling of other required components and makes it difficult to reduce the size.

[0004]

DISCLOSURE OF THE INVENTION The present invention is intended to solve the above problems, in which a pachinko ball is sent to a launch rail by one by driving a solenoid, and a cam piece provided on a rotary shaft of a stepping motor. In a pachinko ball launching device for striking and launching a pachinko ball on a launch rail by reciprocating a mallet against the elasticity of an elastic spring by a magnetic sensor consisting of a Hall element on the rear end wall of the housing of a stepping motor, A magnetizing piece that can be sensed by the magnetic sensor is provided at the rear end of the rotor of the stepping motor, and the solenoid is driven by a signal from the magnetic sensor.

[0005]

By incorporating a magnetic sensor inside the stepping motor, a space and size can be reduced and other parts in the pachinko machine can be easily assembled.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a pachinko ball launching device according to the present invention in a perspective view from the front side, and FIG. 2 shows it from the back side of the pachinko machine. In the figure, 1 is a handle provided with a touch electrode 2 and an operating lever 3 for adjusting a striking force, 4 is a slant gutter for supplying a pachinko ball that communicates with a bowl, and 5 is a vertical gutter 6 that is connected from the lower end of the slant gutter. A ball feeding device provided, 7 is a solenoid for operating the ball feeding device 5, and 8 is a firing rail provided below a delivery port 9 of the ball feeding device 5. The ball feeding device 5 includes a first member 11 pivotally supported by a support shaft 10 and a second member 13 pivotally supported by the support shaft 12 in a long hole 14 formed in the second member 13. Pin 15 is loosely fitted and connected, and when the solenoid 7 is excited and the magnetic piece 16 is attracted by using the support shaft 17 as a fulcrum, the magnetic piece 16 swings the first member 11,
When the first member 11 swings, the second member 13 swings in the opposite direction, and therefore, the tip portion of the second member 13 and the first member 11 swing.
The leading end of the member 11 alternately appears and disappears in the vertical gutter 6, so that one pachinko ball falling into the vertical gutter 6 is delivered to the outlet 9
It is a known device that sends balls onto the launch rail 8 more.

Reference numeral 20 is a stepping motor fixed to a mounting substrate 21, and 22 is a cam piece fixed to a rotary shaft 23 of the stepping motor 20. Further, 30 is a base shaft 39
Is a mallet swingably supported by a bearing 31 provided on the mounting substrate 21, and the swing range of the mallet 30 is limited by stoppers 32 and 32 fixed to the mounting substrate 21. Reference numeral 49 is a hooking piece provided on the base shaft 39 so as to face the cam piece 22. Further, 33 has one end of the mallet 30
The elastic spring 33 is fixed to a lever 35 which is pivotally supported by a support shaft 34, and the support shaft 34 meshes with a gear 38 and the gear 38. A pulley 36 is fixed to the other end of the shaft, and the other end of a wire 37 having one end wound around the pulley 36 is wound around the rotation shaft of the striking force adjusting operation lever 3. Therefore, when the striking force adjusting operation lever 3 is rotated, the wire 37 is pulled, and the lever 35 pulls the elastic spring 33 via the gear 38 and the support shaft 34, so that the tensile force of the mallet 30 by the elastic spring 33 is increased. I am trying to adjust it.

As shown in FIG. 3, the stepping motor 20 has coils 25, 25 on the inner circumference of a cylindrical housing 24.
A rotor 27 composed of a ferrite magnet is fixed to a rotary shaft 23 rotatably supported by bearings 26, 26, and a step current supplied to the coils 25, 25 from a terminal 28 causes the rotor 27 to move around the rotor 27. A rotating magnetic field is generated, which causes the rotating shaft 23 to rotate at 100 rpm. Reference numeral 40 is a magnetic sensor composed of a Hall element provided on the rear end wall 41 of the stepping motor 20. Further, 42 is a magnetizing piece fixed to the rear end of the rotor 27, and the magnetizing piece 42 is the magnetic sensor 40.
It is magnetized so that it can be sensed at.

Reference numeral 50 is an electric control board of the pachinko ball launching apparatus, 55 is a terminal for supplying power to the control board 50, and the control board 50 has touch detection as shown in the block diagram of FIG. The stepping motor 20 includes a circuit 51, a motor drive circuit 52, a timing generation circuit 53, and a solenoid drive circuit 54. The touch detection circuit 51 detects that a hand touches the touch electrode 2 and turns on the motor drive circuit 52. Then, a step pulse current is sent to the stepping motor 20 to rotate it. Further, the rotation of the stepping motor 20 is detected by the magnetic sensor 40 when the magnetizing piece 42 comes into contact with and separates from the magnetic sensor 40, and the solenoid drive circuit 54 is passed through the timing generation circuit 53.
Operate. As shown in the timing chart of FIG. 5, the timing generation circuit 53 outputs the solenoid drive output to the solenoid drive circuit 54 for the drive time tw after the correction time ta has elapsed after receiving the falling signal from the magnetic sensor 40. The magnetic sensor 40
Correction time t from when the magnetized piece 42 is detected and a signal is emitted.
After a, the solenoid 7 is operated for the drive time tw. When the solenoid 7 is operated in this manner, the pachinko ball of the inclined gutter 4 is sent to the firing rail 8 for one piece, and when the cam piece 22 is rotated by the rotation of the stepping motor 20, the cam piece 22 is engaged with the catch piece 49. Then, the mallet 30 swings, and the elasticity of the elastic spring 33 allows the pachinko ball on the launch rail 8 to be hit and launched onto the game board surface.

Although the magnetic sensor is used to detect the rotation of the rotor in the above embodiment, the rotation of the rotor may be detected using another sensor such as a photo sensor.

[0011]

As described above, in the pachinko ball launching device of the present invention, the magnetic sensor is provided in the stepping motor to directly detect the rotation of the rotor of the stepping motor, and the solenoid of the ball feeding device is operated according to the timing of the signal. Since there is no need to provide a sensor for detecting the movement of the mallet on the mounting substrate as in the conventional case, there is an advantage that the assembly is easy and the space and size can be reduced. is there.

[Brief description of drawings]

FIG. 1 is a perspective view of a pachinko ball launching device according to an embodiment of the present invention.

FIG. 2 is a rear view of a pachinko ball launching device showing an embodiment of the present invention.

3 is a vertical cross-sectional view of the stepping motor of FIG.

FIG. 4 is a block diagram of an electric control board.

FIG. 5 is an operation timing chart of a solenoid.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Handle 2 Touch electrode 3 Operating lever for striking force adjustment 5 Ball feeding device 7 Solenoid 8 Firing rail 20 Stepping motor 22 Cam piece 30 Hammer 33 Resilient spring 24 Housing 25 Coil 27 Rotor 40 Magnetic sensor 41 Rear end wall 42 Magnetizing piece 50 control board 51 touch detection circuit 52 motor drive circuit 43 timing generation circuit 54 solenoid drive circuit

Front page continued (72) Inventor Hiroshi Enomoto, 3-20-8 Ogashirabashi, Nakagawa-ku, Nagoya, Aichi Kyoraku Sangyo Co., Ltd. Inside the Robot Co., Ltd. (72) Yuichi Tsuda Inventor Yuichi Tsuda 3-93 Aioi-cho, Kiryu-shi Gunma Japan Inside the servo company (72) Toru Hayakawa 3-13-2 Takada, Toshima-ku, Tokyo Stock Company Inside Hitachi Micro Device (72) Inventor Kazuhiko Hosodo 3-13-2 Takada, Toshima-ku, Tokyo Inside Hitachi Micro Device Co., Ltd.

Claims (1)

[Claims] 1. A pachinko ball is driven by a solenoid drive.
In a pachinko ball launching device that sends balls to individual launch rails and reciprocates a mallet against the elasticity of a spring by a cam piece provided on the rotation shaft of a stepping motor to strike and launch a pachinko ball on the launch rail. A magnetic sensor including a Hall element is provided on the rear end wall of the housing of the stepping motor, and a magnetizing piece that can be sensed by the magnetic sensor is provided at the rear end of the rotor of the stepping motor. A pachinko ball launching device characterized in that a solenoid is driven.