JPH0321266Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a pinball device for a pachinko machine used in an electric pachinko machine.

(Prior art) A conventional pinball device for a pachinko machine supports the hammer shaft of a pinball mallet with a bearing built into a cylindrical case formed on the back side of a mounting board, and It had a bullet hammer fixed to the end.

(Problem that the invention aims to solve) However, since the hammer shaft is supported only by a bearing provided at the tip that passes through the mounting board, in order to prevent the hammer shaft from wobbling, a pair of front and rear It must be supported with a single row bearing or multiple bearings, and as a result, the cylindrical case for housing the bearing on the mounting board becomes large, making the ball device larger and requiring the use of multiple or expensive bearings. The cost increase caused by
In addition, there are many other problems, such as the inability to assemble the ball device to the base of a pachinko machine unless a hole is drilled in the base to accommodate the cylindrical case for housing the bearing formed on the back side of the mounting board. It was hot.

(Means for solving the problem) The present invention was completed in order to solve the above-mentioned problems, and a mallet shaft is implanted on the surface of the mounting board that is attached to the back of the pachinko machine base. A bullet mallet, in which a single-row bearing of approximately the same thickness as the bullet mallet is tightly fitted inside the enlarged proximal portion, is rotatably pivoted on the mallet shaft, and a ball mallet is rotatably mounted on the same surface of the mounting board. The present invention is characterized in that an elastic force adjustment mechanism with a spring tension adjuster that is linked to the ball handle is provided, and the elastic force adjustment mechanism is linked to the ball mallet.

(Function) With this configuration, when the player grasps the ball handle and closes the touch switch to drive the motor, the motor cam comes into contact with the cam roller of the ball mallet intermittently, causing the ball mallet to move. It is the same as the conventional method to perform a ball by swinging the ball, but in the present invention, a mallet shaft is implanted on the front side of the mounting board, and the mallet shaft is tightly attached to the enlarged proximal part of the ball mallet. Since the hammer is pivoted through a thin single-row bearing fitted into the shaft, the hammer shaft does not wobble even without using a double-row bearing or a pair of front and rear single-row bearings as in the past.
This allows for a smooth ball. In addition, the single-row bearing is approximately the same thickness as the bullet mallet, and does not significantly exceed the wall thickness of the bullet mallet, and since it is provided on the front side of the mounting board, the bullet device itself can be made thinner.
Moreover, there is no need to drill a hole in the base of the pachinko machine to store the cylindrical case during installation, and all you have to do is hold the back of the mounting board and attach it to the base of the pachinko machine, greatly simplifying the installation process. Furthermore, since only one single row bearing is used, the cost can be significantly reduced, and it has many advantages such as being able to be provided at a low price. Further, the elastic force can be easily adjusted by operating the elastic force adjustment mechanism provided on the same surface of the mounting board using the elastic ball handle, and furthermore,
When adjusting the spring tension at the pachinko parlor, the handle of the spring tension adjuster is rotated to rotate the handle relative to the adjuster body, thereby changing the tension of the coil spring.

(Example) The present invention will be described in detail with reference to the illustrated example. Reference numeral 1 denotes a mounting board that is attached to the back surface of a pachinko machine base, and a mallet shaft 2 is embedded in the front of the mounting board 1. 3 is the enlarged basal part 4
This is a ball mallet in which a single row bearing 5 is tightly fitted inside, and the ball mallet 3 is pivotally connected to the hammer shaft 2 with the single row bearing 5. Further, the single row bearing 5 has approximately the same thickness as the wall thickness of the ball mallet 3. Reference numeral 6 denotes an elastic force adjustment mechanism that is provided on the front side of the mounting board 1 and is connected to the bullet mallet 3 via a spring tension adjuster 7 that is interlocked with the bullet handle 10. , a coil spring 8 that is locked at one end to the ball mallet 3 and the other end is locked to the spring tension adjuster 7; one end is locked to the arm 9 of the spring tension adjuster 7, and the other end is locked to the ball handle. 10 winding cams 11 and a drawstring 12 latched to the winding cams 11. The spring tension adjuster 7 is composed of a ring-shaped locking pawl formed on the adjuster body 13, and a handle 14 provided with a ring-shaped locking pawl that engages with the locking pawl by spring force. When changing the spring tension at a pachinko parlor, the handle 14 is pushed down against the spring force to disengage the locking pawls, and then the handle 14 is turned, and the coil spring 8 is expanded or contracted. The tension can be changed.
Reference numeral 15 denotes an auxiliary spring whose one end is locked to the arm 9 of the spring tension adjuster 7 and the other end is locked to the mounting board 1. It is something. Reference numeral 16 denotes a cam roller provided at the base end of the hammer 3, and the cam roller 16 contacts a motor cam of a motor (not shown) to swing the hammer 3 intermittently. 17 is the rubber stopper of the bullet mallet 3, 1
8 is a cover plate that covers the single row bearing 5, and 19 is a nut for attaching the single row bearing 5 to the mallet shaft 2.

(Effects of the invention) As is clear from the above description, the present invention does not require the use of double-row bearings or a pair of front and rear single-row bearings as in the past, and the hammer shaft does not rattle, allowing smooth ball rolling. can be done. In addition, the single-row bearing has approximately the same thickness as the bullet mallet, and the bullet device itself is thin because the bullet mallet is pivotally mounted on the hammer shaft implanted on the front side of the mounting board. I can,
Moreover, since there is no protrusion on the back surface of the mounting board, it is sufficient to simply mount it on the base of the pachinko machine, which has many advantages, such as greatly simplifying the installation process. Therefore, the present invention has extremely great practical value as it solves the problems of the conventional ball device for pachinko machines.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention, and FIG. 2 is a partially cutaway side view. 1: Mounting board, 2: Hammer shaft, 3: Bullet hammer, 4: Enlarged proximal part, 5: Single row bearing, 6: Elastic force adjustment mechanism, 7: Spring tension adjuster, 10: Bullet handle.

Claims (1)

[Scope of utility model registration request] A mallet shaft 2 is implanted on the surface of a mounting board 1 that is attached to the back surface of a pachinko machine base, and a single row bearing 5 having approximately the same thickness as the mallet 3 is mounted on the enlarged base portion 4 on the mallet shaft 2. A ball mallet 3 tightly fitted inside is rotatably pivoted, and a spring tension adjustment mechanism 6 with a spring tension adjuster 7 interlocked with a ball handle 10 is mounted on the same surface of the mounting board 1. The elastic force adjustment mechanism 6 is provided with
A pin ball device for a pachinko machine, characterized in that the pin ball device is connected to a pin ball mallet 3.