JPH0436850Y2 - - 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 ball device for a pachinko machine has a long tension coil spring locked to a ball mallet, and a long tension coil spring that is wound around the winding cam of the ball handle at the other end of the tension coil spring. The force of the ball was adjusted by connecting the pull strings.

(Problem that the invention aims to solve) However, when a long tension coil spring is used as described above, the impact caused by the bullet causes surging in the tension coil spring itself, which causes fluctuations in the force of the bullet. The ball flight distance is not constant, which reduces the interest of playing pachinko.In addition, since the ball mallet is connected to the ball handle via a long tension coil spring and a drawstring door, the ball does not fly at the ball handle. It is difficult to feel the ball, the response is poor, and the ball device has become larger.
Another problem was that assembly and adjustment work required time and effort.

(Means for Solving the Problems) The present invention was completed in order to solve the above-mentioned problems, and a torsion coil spring is mounted on the same axis as the hammer shaft of the ball mallet which is pivotally mounted on the board. A double cylindrical gear for storage and a toothed circle for spring adjustment that can mesh at any angle with the tooth plate provided on this gear by the force of a coil spring stored in the center hole of the gear. A torsion coil spring is housed between the inner and outer cylindrical parts of the gear, one end of which is locked to a spring holder fixed to the mallet, and the other end is fitted with teeth. It is characterized by being locked to the disc, and having a gear attached to the ball handle that meshes with the gear.

(Function) With the device configured as described above, when the ball handle is grasped, the touch switch is closed, and the motor is driven, the motor cam intermittently contacts the cam roller of the ball mallet, causing the ball mallet to swing. The force of the torsion coil spring provided on the mallet shaft allows the ball to be hit without causing surging. Also, if the player wants to change the force of the ball, he or she can turn the ball handle, and the gear that meshes with the gear of the ball handle is a toothed disc that locks the other end of the torsion coil spring through a tooth plate. The force of the ball is changed by rotating the ball and twisting the torsion coil spring provided on the shaft of the ball mallet to either expand or contract. Furthermore, when adjusting the force of the ball at a pachinko parlor, the toothed disc is pushed down against the spring force to disengage the toothed disc, and then the toothed disc is pushed down against the spring force to disengage it from the toothed disc, and then the toothed disc is pushed down against the spring force to disengage it from the toothed disc, and then the toothed disc is pushed down against the spring force to disengage it from the toothed disc, and then the toothed disc is pushed down against the spring force to disengage it from the toothed disc. By turning it, you can adjust the elastic force of the torsion coil spring.

(Embodiments) The present invention will be described in detail below with reference to illustrated embodiments.

Reference numeral 1 denotes a board that is attached to the back of the base of the pachinko machine, and the board 1 has a mallet shaft 3 to which a ball mallet 2 is attached.
is pivotally mounted via a bearing 4. 5 is a torsion coil spring provided on the same axis as the mallet shaft 3, and one end of the torsion coil spring 5 is attached to the ball mallet 2.
At the same time, the other end of the torsion coil spring 5 is locked to a toothed disk for tension adjustment that is pivotally supported by a shaft 7a of a bracket 7 attached to the base plate 1. ing. Reference numeral 9 denotes a double cylindrical gear for housing a torsion coil spring, which is supported by the shaft 7a of the bracket 7, and the torsion coil spring 5 is housed between the inner and outer cylindrical portions of this gear 9. Further, a part of the gear 9 is provided with a removable tooth plate 10 that can be engaged with the toothed disc 8 at any angle by the force of a coil spring 13, which will be described later.

Reference numeral 11 denotes a ball handle with a gear 12 fixed to the base end that meshes with the gear 9. When the ball handle 11 is turned and the gear 12 is rotated in either the forward or reverse direction, the toothed disc 8 is moved between the gear 9 and the tooth plate. The torsion coil spring 5 is rotated in either the forward or reverse direction via the spring 10 to twist the torsion coil spring 5 in either direction of expansion or contraction, thereby changing the elastic force.

13 is a coil spring fitted into the center hole 18 formed in the double cylindrical gear 9;
The coil spring 13 biases the toothed disc 8 for tension adjustment so that the toothed disc 8 is always engaged with the toothed disc 10. When the pachinko parlor changes the spring tension of the torsion coil spring 5, the toothed disk 8 is pushed down against the elastic force of the coil spring 13 to prevent the toothed disk 8 and the tooth plate 10 from meshing. If the toothed disk 8 is then rotated in either the forward or reverse direction, the torsion force of the torsion coil spring 5 whose other end is locked to the toothed disk 8 is changed, and the spring tension is changed. Note that 14 is a motor cam that is rotated by a motor 15, and 16 is a cam roller pivotally connected to the bullet hammer 2. The cam roller 16 is in contact with the cam roller 14 to swing the bullet hammer 2 intermittently. It is. Further, 17 is a rubber stopper of the ball mallet 2.

(Effects of the invention) As is clear from the above description, the invention has the following advantages:
Since the torsion coil spring installed coaxially with the hammer shaft of the bullet mallet causes the bullet mallet to bounce, there is no surging that occurs as with conventional tension coil springs, and the bullet ball of the bullet mallet is Since there is no fluctuation in force, the ball always travels a constant distance, making pachinko even more interesting. Moreover, the ball force is adjusted by meshing the gears without using the conventional drawstring, and the gear is made into a double cylinder and a torsion coil spring and a coil spring are housed inside, making the device easier to use. It is extremely compact and easy to assemble and adjust. Furthermore, since no drawstring is used, it has various advantages such as a bouncy feel and good responsiveness, and is of great practical value.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a partially cutaway plan view, and FIG. 2 is a partially cutaway plan view. 1... Board, 2... Ball hammer, 3... Hammer shaft, 5...
...Torsion coil spring, 6... Spring holder, 8...
Toothed disc, 9...gear, 11...bullet handle,
12...Gear, 13...Coil spring, 18...Center hole.

Claims (1)

[Scope of utility model registration request] On the same axis, there is a double cylindrical gear 9 for storing a torsion coil spring, and a tooth plate 10 provided on this gear 9.
Eight toothed disks for spring adjustment, which can be engaged at any angle by the force of the coil spring 13 housed in the center hole 18 of the gear 9, are attached separately from the hammer shaft 3, and this gear A torsion coil spring 5 is housed between the inner and outer cylindrical parts of 9, one end of which is locked to a spring holder 6 fixed to the ball mallet 2, and the other end is locked to a toothed disc 8, This ball device for a pachinko machine is characterized in that a gear 12 meshing with a gear 9 is attached to a ball handle 11.