JPS6044940B2 - Pachinko machine ball launch force adjustment device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a ball launching force adjustment device for a pachinko machine.

A ball-hitting cam surface of the drive cam includes a ball-striking rod biased by a conventionally known spring, and a drive cam that acts to move the ball-striking rod to a ball-striking position against the bias of the spring. is further tilted in a direction different from the direction of action, and the drive cam is movable in the other direction by an adjustment device. When operating the device to adjust the ball launch force of the batting rod, the adjustment device is placed at the position operated by the previous player, so the ball launch force is the same as the base ball launch force, for example, the minimum of the pachinko machine. When a player adjusts the adjustment device using the ball launch force as the origin, the player must return the adjustment device to its origin and then perform the adjustment operation little by little, making the operation cumbersome.

The present invention eliminates the above-mentioned drawbacks, and when the player releases the adjusting device, the adjusting device automatically returns to its origin, and this returning force can be changed as necessary for ball firing of a pachinko machine. The purpose of this invention is to provide a power device.

In order to achieve this objective, the ball launching force adjustment device for a pachinko machine of the present invention includes a ball-striking rod that is biased by a spring, and a ball-striking rod that acts against the bias of the spring to a position where the ball can be hit. a drive cam, the ball-hitting cam surface of the drive cam is further inclined in the direction of the rotation axis of the drive cam, and the drive cam is movable in the direction of the rotation axis by an adjustment device. In the pachinko machine, the adjusting device includes an automatic origin return device having a biasing means for biasing the adjusting device to a free position, and the biasing device has a biasing force adjustment mechanism. .

Embodiments of the present invention will be described with reference to the drawings.

Reference numeral 1 denotes a batting rod, which is fixed to a shaft 6 which is fixed by a bearing 5 to an intermediate plate 4 which is attached to a base plate 2 via spacers 3, 3.

An arm 8 is fixed to one end of the shaft 6, and a roller 7 serving as a cam follower is attached thereto. has been done. A spacer 1 is attached to the substrate 2 and the middle plate 4.
1 and 11 and spacers 12 and 12, a motor 14 is fixed to the motor mounting plate 13.
A drive cam 9 is attached to a drive cam support shaft 16 fixed to a motor shaft 15 of No. 4 so as to be slidable in the axial direction and rotate together with the drive cam support shaft 16.

17 is a flange 18 of the drive cam 9 and the drive cam support shaft 16
A coil spring provided between the drive cam 9 and the drive cam 9 urges the drive cam 9 in its axial direction.

Reference numeral 19 denotes an adjusting device, which includes a handle 20, an operating shaft 21, an inclined cam 22 fixed to the operating shaft 21, and a ball 2 interposed between an inclined surface 23 of this inclined cam 22 and the driving cam 9.
4, the operation shaft 21 is parallel to the axis of the drive cam 9, and the slope 23 of the slope cam 22 is in contact with the end of the rotation shaft of the drive cam 9.

25 is a bearing of the operation shaft 21 attached to the base plate 2, 26 is a front frame that supports the base plate 2, 27 is a decorative plate attached to the front frame 26, 28 is a com stopper that engages with the batting rod 1, 2
Reference numeral 9 denotes a tension spring that biases the ball hitting rod 1 in an elastic manner.

The ball-hitting cam surface 10 of the drive cam 9 changes the distance from the rotation axis in a direction around the rotation axis of the drive cam 9 that acts on the ball-striking rod 1 to a position where a ball can be hit, and also changes the distance from the rotation axis in the axial direction of the rotation axis in addition to the above-mentioned direction. is inclined to.

Reference numeral 32 denotes an automatic origin return device having a biasing means for biasing the adjusting device 19 to the free position, and is interposed between the base plate 2 of the ball batting rod 1 and the inclined cam 22, and has one end connected to the base plate 2. The adjustment device 19 is formed by a biasing means consisting of a coil spring 33 that is engaged with and fixed in a hole, and whose other end is engaged with one of a plurality of engagement holes 31 provided along the periphery of the slope cam 22. A biasing force adjustment mechanism is configured by engaging a coil spring 33 with one of a plurality of engagement holes 31 provided around the slope cam 22.

Next, the effect will be explained.

When a switch is properly turned on to start a pachinko game, the motor 14 rotates, and the rotation of the motor shaft 15 is transmitted to the drive cam 9 via the drive cam support shaft 16.

When the drive cam 9 rotates, the ball-hitting cam surface 1 changes around the rotation axis so that the distance from the rotation axis gradually increases.
0 pushes the roller 7 attached to the arm 8,
The ball hitting rod 1, which is connected to the arm 8 by the shaft 6, is rotated about the shaft 6 against the bias of the tension spring 2)9.
When the drive cam 9 further rotates and the end of the ball-hitting cam surface 10 comes into contact with the roller 7, the ball-striking rod 1 is vigorously rotated by the bias of the tension spring 29 and is brought to an appropriate position. Fire a pachinko ball. At that time, the rubber stopper 28
, 28 come into contact with the batting rod 1 to buffer its movement. When adjusting the ball launch force of the ball hitting rod 1, when the handle 20 of the adjustment device 19 is rotated, the slope cam 22 rotates via the operation shaft 21, and the ball 24 is rotated by the slope 23 which is the cam surface. The drive cam 9 moves in the axial direction through the drive cam 9.

That is, when the slope 23 of the slope cam 22 moves toward a higher place, the drive cam 9 is pressed through the ball 24, the drive cam 9 moves against the coil spring 17, and the ball hitting cam surface 10 The contact surface with the roller attached to the arm connected to the ball-striking rod 1 is displaced in the direction where the distance from the axis of the drive cam 9 is greater, so that the amount of movement of the arm 8, that is, the amount of movement of the ball-striking rod 1, is reduced. As the ball becomes larger, the power of launching the pachinko ball by the ball rod 1 increases.

When the slope 23 of the slope cam 22 moves toward a lower position relative to the ball 24, the drive cam 9 is pushed back on the drive support shaft 16 by the coil spring 17, and the ball-hitting cam surface 10 is pressed against the ball-striking rod. The contact surface of the roller 7 attached to the arm 8 connected to the arm 8 is displaced to the side where the distance from the axis of the drive cam 9 is smaller, the amount of movement of the ball batting rod 1 becomes smaller, and the pachinko ball is hit by the ball batting rod 1. The firing power is reduced.

When the player releases the handle 20 of the adjustment device 19, the slope cam 22 is rotated by the coil spring 33 of the origin return device 32, the lowest part of the slope 23 contacts the ball 24, and the drive cam 9 is brought into contact with the coil spring 17. Therefore, it moves on the drive cam support shaft 16, and the lowest part of the ball-hitting cam surface 10 with respect to the ball-striking rod 1 faces the roller 7.

In order to change the restoring force of the origin return device 32, it is sufficient to remove one end of the coil spring 33 from the engagement hole 31 of the slope cam 22 and engage it with the other engagement hole 31.

In the above embodiments, the coil spring is used as the biasing means of the origin return device 32, but the coil spring 33 may not be used as other biasing means, or the coil spring 33 may not be used as other biasing means.
By weakening the elasticity of the adjusting device 19, the adjustment device 19 cannot be returned to the free position, which is the origin, by weakening the elasticity of the slanted cam 22, which is pressed via the ball 24 by the drive cam 9 pressed by the coil spring 17. When the player releases the adjustment device 19 by setting the inclination of the slope 23 at an angle such that the slope cam 22 rotates against the frictional force due to the pressure of the ball 24, the pressure of the coil spring 17 or the coil spring 17
By pressing the coil spring 33 and rotating the coil spring 33, the inclined cam 29
may be rotated, and the handle 20 may be rotated via the operating shaft 21 to return the adjustment device 19 to its origin.

In this case, the biasing force adjustment mechanism of the adjustment device 19 can be adjusted by changing the engagement position between the coil spring 33 and the engagement holes 31 provided around the slope cam 22, as in the above embodiment; This can be done by preparing in advance a plurality of slope cams 22 with slopes 23 having different inclinations, and attaching a suitable one of the slope cams 22 to the operating shaft 21 in a detachable manner.

As described above, the ball launching force adjustment device for a pachinko machine of the present invention includes a spring-biased ball-striking rod and a drive that acts to move the ball-striking rod to a ball-striking position against the bias of the spring. cam, the ball-hitting cam surface of the drive cam is further inclined in the direction of the rotation axis of the drive cam, and the drive cam is movable in the direction of the rotation axis by an adjustment device. In the above, the adjustment device is characterized in that it includes an origin movement return device having a biasing means for biasing the adjustment device to a free position, and has the biasing force adjustment mechanism, so that the player can The ball launching force can be adjusted using the free position of the adjustment device that produces the ball launching force as the reference origin, making the operation simple. This allows the speed and force of the adjustment device to return to its original position to be appropriate.

[Brief explanation of drawings]

Fig. 1 is a side sectional view of a positional embodiment of the present invention, Fig. 2 is a back sectional view of the same, Fig. 3 is a plan view of the same, and Fig. 4 is a side sectional view of the same at another position. It is a diagram. 1... Batting rod, 9... Drive cam, 10
...Ball hitting cam surface, 16...Cam support shaft, 17...Coil spring, 19...Adjusting device, 20...Handle, 21... ...Operation axis, 22
...Slope cam, 23...Slope, 24.
... Ball, 29 ... Tension spring, 30 ...
- Hole, 31... Engagement hole, 32... Origin return device, 33... Coil spring.

Claims (1)

[Scope of Claims] 1. A ball-hitting cam comprising a ball-striking rod biased by a spring and a drive cam that operates the ball-striking rod to a ball-striking position against the bias of the spring; In the pachinko machine, the surface is further inclined in the direction of the rotational axis of the drive cam, and the drive cam is made movable in the direction of the rotational axis by an adjustment device, wherein the adjustment device controls the adjustment device. 1. A ball launching force adjustment device for a pachinko machine, comprising an automatic origin return device having a biasing means for biasing the biasing means to a free position, and a ball launching force adjustment mechanism for the biasing means. 2. Ball launching force of a pachinko machine according to claim 1, wherein the adjustment device has an operating shaft and an inclined cam fixed to the operating shaft and in contact with the end of the rotating shaft of the drive cam. Regulator. 3. The ball launch force adjustment device for a pachinko machine according to claim 2, wherein the automatic origin return device is a coil spring having one end fixed to the base plate of the ball batting rod and the other end engaged with the inclined cam. 4. Ball launching force adjustment for a pachinko machine according to claim 3, wherein the biasing force adjustment mechanism is one in which a coil spring is engaged with one of a plurality of engagement holes provided around the slope cam of the adjustment device. Device. 5. The ball launching force adjustment device for a pachinko machine according to claim 2, wherein the biasing force adjustment mechanism has a plurality of removably attached slope cams having different slope slopes.