JPH0318475B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a ball launcher that is attached to the lower part of the front frame of a pachinko machine, and in particular, a ball launcher that rotates a hammer arm by the rotation of a ball motor and fires a ball at the tip of the ball launcher. This invention relates to a ball launcher for a pachinko machine that hits the ball with a hand.

[Conventional technology]

In conventional pachinko machines, the flight distance of the ball is adjusted by rotating the operating handle located at the bottom of the front frame of the machine to adjust the strength of the long coil spring connected to the hammer arm. Most of the time, ball launchers were designed to allow adjustment of the pitch. However, pachinko machines with this type of configuration require a large assembly space on the back of the front frame, and the parts that make up the ball launcher cannot be accurately assembled in the designated positions, resulting in poor workability. In an attempt to solve this problem, in recent years, ball launchers that are made up of various parts have been offered as a set.
An example of such a set ball launching device is a ball launching device disclosed in Japanese Patent Application Laid-Open No. 1983-44949. The ball launcher disclosed in Japanese Patent Application Laid-Open No. 54-44949 has an electric motor fixed to a fixed plate that is fixed at a predetermined distance from a mounting board on which each component is attached, and A portion where the cam of the electric motor engages with a cam pin protruding from the firing rod and an electric adjustment starting cam that transmits the rotational movement of the electric grip main body to the spiral spring are arranged.

[Problem that the invention seeks to solve]

In the above-mentioned ball launcher, since the electric motor is formed to protrude from the back side of the mounting board, there is a risk that the electric motor will collide with something when the Pachinko machine is being transported or the like.

In addition, the electric motor's calm, the firing stick's calm pin, and the electric adjustment starting cam are exposed on the back side of the mounting board, so the pachinko machine installation island is ideal for ball launchers that require long-term use. There was a risk that dust, etc. would adhere to the device and prevent normal operation.

[Means for solving problems]

In order to solve the above problems, the present invention provides a through space that penetrates the front frame at the lower part of the front frame of a pachinko machine, and a storage space inside the front side of the front frame so as to cover the through space. The formed operating handle mounting board is also provided with a batting ball launcher mounting board on the back side, thereby making the storage space for the operating handle mounting board continuous with the through space of the front frame to form an operating space, and mounting the batting ball launching device. On the front surface of the board, a bearing cylinder is bulged in the working space, and a pivot shaft of the hammer arm of the hammer arm mechanism is rotatably supported by a bearing installed in the bearing cylinder. A hammer arm is fixed to the back side of the ball launcher mounting board, and an engagement member that engages with a cam provided on the output shaft of the ball motor is fixed to the front side of the bearing tube, and the ball launcher mounting board , a mounting shaft is provided on the hammer arm mechanism including the hammer arm, one end of which attaches a coiled spring whose other end is respectively locked at a position where the hammer arm can be rotated in one direction; This adopts a configuration in which a cam is disposed to intermittently drive the engaging member against the coiled spring by a ball hitting motor provided on the back surface of the ball launching device mounting board.

[Effect]

According to the present invention, a penetrating space passing through the front frame is provided at the lower part of the front frame of a pachinko machine, and a storage space is formed inside the front side of the front frame so as to cover the penetrating space. In addition, a batted ball launcher mounting board is provided on the back side, which connects the storage space of the operation handle mounting board with the through space of the front frame to form an operating space, and the cam of the operating mechanism and the like are installed in this operating space. Since the engaging members are housed, there is no risk of dust or the like adhering to these parts, making them durable for long-term use, and since the electric motor does not protrude more than necessary, it is easy to use the electric motor when transporting the pachinko machine. There is no risk of impact.

〔Example〕

Embodiments according to the present invention will be described below based on the drawings.

1 to 6 schematically show a ball launcher for a pachinko machine according to the present invention, and as shown in FIG. 4, a through space 2a passing through the front frame 2 is provided at the lower part of the front frame 2, An operation handle mounting board 84 is attached to the front side of the front frame 2 so as to cover the through space 2a, and has a storage space 84a inside and an operation handle 85 on the front side, and a ball-hitting base board 84 is attached to the back side of the front frame 2. A storage space 8 is provided with a mounting board 21 for the launcher 20 and is continuous with the through space 2a.
4a, an action space 101 is formed.
Further, the mounting board 21 of the batted ball firing device 20 includes a batted ball firing hammer arm mechanism 22, an actuation mechanism 23 provided in association with the hammer arm mechanism 22, and the actuation mechanism 23.
A biasing spring 24 is provided which biases the hammer arm 25 of the hammer arm mechanism 22 to rotate in response to the operation of the hammer arm mechanism 22.

As shown in detail in FIGS. 3A to 3C, the hammer arm mechanism 22 is arranged on the back side of the mounting board 21, and the hammer arm 25 that hits the ball with the tip head 26 is connected to the spacer 29.
A spring washer 31 and a nut 32 are fixed to a pivot shaft 28 which is received by a bearing 27 via a spring washer 31 and a nut 32. The bearing 27 is attached to a bearing mounting portion 21a formed on the mounting board 21, and a fitting extending in the radial direction is attached to the tip of the pivot shaft 28 that protrudes from the head 34 of the bearing sleeve 33 bulging from the mounting board 21. One end of a crank 35 serving as a mating member is fixed, and a pin 36 that can be engaged with a cam 82 of an actuation mechanism 23, which will be described later, is implanted at the other end of the crank 35. Further, the bearing sleeve 33, the crank 35, and the cam 82 are arranged within the working space 101.

In the figure, numerals 54 and 55 are ball bearings of the bearing 27, 56 and 57 are inner rings thereof, 58 and 59 are outer rings thereof, 60 is an inner ring, an inner ring spacer provided between 56 and 57, and 62 is the head of the bearing tube 33. This is a wave washer disposed between the portion 34 and the side surface of the ball bearing 54.

A coiled spring 65, for example, a coil spring, is attached to the pivot shaft 28 of the bearing 27, and the nut 32 of the hammer arm 25 is attached to the pivot shaft 28 of the bearing 27.
is used as a spacer, and the pivot shaft 28 is inserted into a hole formed by the coiled spring 65, and is attached by a nut 67 via a presser washer 66. One end of the coiled spring 65 is engaged with an engaging portion 68 formed on one side of the hammer arm 25, and the other end is engaged with an adjustment mechanism 70, which will be described later.
5 is biased by the coiled spring 65 in the ball flight direction, that is, clockwise as viewed in FIG.

The adjustment mechanism 70 includes an adjustment gear 71 mounted at an appropriate position on the mounting board 21 so as to be rotatable in only one direction, and an adjustment piece in the shape of a parallelogram, for example, formed eccentrically on the upper surface of the adjustment gear 71. 72 and a locking groove 73 formed on the side surface of the adjustment piece 72, and the other end of the coiled spring 65 is locked in the locking groove 73 of the adjustment piece 72. The clockwise rotation of the adjustment gear 71 is restricted by a stopper member 74 formed of a leaf spring.

Since the adjustment mechanism 70 is provided on the back side of the mounting board 21 in this way, even if the coil spring 65 deteriorates due to long-term use, it can be easily wound by operating the adjustment piece 72 from the back of the pachinko machine. spring 65
You can preset the settings. In addition, for clockwise rotation, the stopper member 74 is rotated by the adjustment gear 7.
It is possible if it is separated from 1.

The adjusting piece 72 can also be oval-shaped, and the key is to change the locking position of the coiled spring 65 so as to change its elastic force as the adjusting gear rotates.

Furthermore, in the above embodiment, the case where the coiled spring 65 is attached to the pivot shaft 28 of the bearing 27 has been described, but the coil spring 65 is mounted near the pivot shaft 28 and on the mounting board 21. A mounting shaft can be provided at an appropriate position that can provide a rotation biasing force for mounting. In addition, the coiled spring 6
5 may be attached to an appropriate position on the front side of the mounting board 21 instead of on the back side so as to apply a rotational biasing force. In this case, the adjustment mechanism 70 for changing the rotational biasing force of the coiled spring 65 will also be provided on the front side of the mounting board 21, but only the adjustment piece 72 will be located on the back side of the mounting board 21. The rotational biasing force of the coiled spring 65 may be adjustable. Reference numeral 69 is a stopper member of the hammer arm 25 for blocking the biasing of the coiled spring 65 at a predetermined position.

Further, an operating mechanism 23 of the hammer arm mechanism 22 for firing a ball is formed on the mounting board 21, and a ball hitting motor 80 consisting of a deceleration motor or the like driven by a power source (not shown) is mounted on the back side of the mounting board 21. The output shaft 81 is mounted so as to protrude to the front side of the mounting board 21, that is, to protrude into the working space 101, and the output shaft 81 of the ball-striking motor 80 has three claws 83 spaced at equal intervals. A formed cam 82 is connected, and the three claws 83 of the cam 82 are configured to sequentially and repeatedly operate the pin 36 installed at the tip of the crank 35.

Also, the batting force adjustment lever 86 of the operation handle 85
There is a storage space 84a for the operation handle mounting board 84.
A sector gear 87 provided therein is connected, and a large gear 89 meshes with the sector gear 87 via a small gear 88 that rotates based on the rotation of the sector gear 87. A tension spring 90 is stretched between the crank 35 and the crank 35 so as to bias the crank 35 in a counterclockwise direction as viewed in FIG. Further, a micro switch 91 is provided which is turned on based on the rotation of the sector gear 87.
When the micro switch 91 is turned on, a predetermined current is supplied to the ball hitting motor 80.

The operating mechanism 23 includes a crank 35 and a cam 8 provided on the ball launcher 20 and having a pin 36 implanted therein.
2, a sector gear 87, a small gear 88, a large gear 89, etc. provided on the operating handle mounting board 84.

The above is an example of the configuration of the ball launcher for a pachinko machine according to the present invention.
From the state where a predetermined rotation biasing force is applied to
The player can operate the ball hitting force adjustment lever 8 on the operating handle 85.
6 in the X direction shown in FIG. 6, the sector gear 87 rotates, and this rotation causes the large gear 89 to rotate via the small gear 88.
The tension spring 90 stretched between the crank 35 and the crank 35 is pulled, and the urging force that urges the crank 35 in the counterclockwise direction as seen in FIG. 5 increases.
The micro switch 91 is activated by the rotation of the sector gear 87.
is on, the crank 35 is continuously rotated back and forth by the three pawls 83 of the cam 82, and therefore the hammer arm 25, which is rotatably attached to the bearing 27, is continuously rotated. The above-mentioned ball hitting force adjustment lever 86 can be activated to continuously fire pachinko balls supplied to the ball firing section from a conventionally known automatic ball feeding device (not shown).
By changing the rotational position of the ball, pachinko balls can be launched at different initial speeds.

In the above-described embodiment, one end of the coiled spring 65 is engaged with an engaging portion 68 formed on one side of the hammer arm 25, but it goes without saying that a member that rotates together with the hammer arm 25, e.g. It may be locked to the pivot shaft 28, crank 35, etc., and the other end of the coiled spring 65 is also connected to the hammer arm 2.
What is necessary is to lock it to a member other than that which rotates integrally with 5.

Further, in the above-described embodiment, the ball hitting force adjustment lever 86
The hitting force is adjusted by biasing the crank 35 via a tension spring 90 to a large gear 89 that rotates in conjunction with the large gear 89 and the adjustment gear 7 of the adjustment mechanism 70.
1 by an appropriate connecting means, the amount of rotation of the ball hitting force adjustment lever 86 may directly adjust the biasing force of the coiled spring 65, thereby changing the repulsive force of the pachinko ball. be. In this case, the large gear 89 and the crank 35 do not need to be connected by the tension spring 90, and the adjustment gear 7 of the adjustment mechanism 70
A stopper member 74 for freely rotating the
It is clear that this is no longer necessary.

〔Effect of the invention〕

According to the above-mentioned ball launching device for a pachinko machine of the present invention, a through space is provided at the lower part of the front frame of the pachinko machine, and a through space is provided inside the front side of the front frame so as to cover the through space. An operating handle mounting board forming a storage space is provided, and a batting ball launcher mounting board is provided on the back side, thereby making the storage space of the operating handle mounting board continuous with the penetrating space of the front frame to form an operating space. Since the cams and engaging members of the operating mechanism are housed within the operating space, there is no risk of dust or the like adhering to these parts, making it durable for long-term use, and the electric motor does not protrude more than necessary, making it ideal for pachinko machines. It is possible to obtain a ball launcher for a pachinko machine that is free from the risk of impact being applied to the electric motor during transportation and maintains ball launch accuracy even when the hammer arm mechanism is used for many years.

[Brief explanation of drawings]

1 and 2 are back views of the mounting board showing different adjustment states of the adjustment mechanism of the ball firing device of a pachinko machine according to the present invention, FIG. 3A is a cross-sectional view showing the hammer arm mechanism for firing balls, 3B is an exploded perspective view of FIG. 3A, FIG. 3C is a detailed view of the pivot shaft, FIG. 4 is a cross-sectional view of the ball launcher, and FIG. 5 is a front view of the mounting board showing the operating mechanism. , FIG. 6 is a rear perspective view of the operating handle. In the figure, 2...Front frame, 2a...Penetration space, 20
...Battered ball launcher, 21...Mounting board, 22...
Hammer arm mechanism for firing a ball, 23... Actuation mechanism, 24...
...Biasing spring, 25... Hammer arm, 27... Bearing, 35
... Crank, 36 ... Pin, 65 ... Winding spring, 70 ... Adjustment mechanism, 80 ... Ball hitting motor,
82...cam, 84...operation handle mounting board,
84a...Storage space, 90...Tension spring, 101
...A space of action.

Claims (1)

[Scope of Claims] 1. An operation handle mounting board that has a through space penetrating the front frame at the lower part of the front frame of the pachinko machine, and a storage space formed inside the front side of the front frame so as to cover the through space. In addition, a batted ball launcher mounting board is provided on the back side, so that the storage space for the operating handle mounting board is continuous with the through space of the front frame to form an operating space. A bearing cylinder is expanded in the working space, and a pivot shaft of a hammer arm of the hammer arm mechanism is rotatably supported by a bearing installed in the bearing cylinder, and a ball launcher mounting board is attached to the pivot shaft. A hammer arm is fixed to the back side, and an engagement member that engages with a cam provided on the output shaft of the ball hitting motor is fixed to the front side of the bearing tube, and one end of the hammer arm is fixed to the ball launching device mounting board. The hammer arm mechanism including the arm is provided with a mounting shaft for mounting a coiled spring whose other end is respectively locked at a position where the hammer arm can be rotated and biased in one direction, and within the action space, a ball launcher is mounted. A ball firing device for a pachinko machine, characterized in that a cam is disposed for intermittently driving the engaging member against the coiled spring by a ball hitting motor provided on the back surface of the base plate.