JPH09131429A - Straightener for pachinko ball - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize the expansion of a rotary stroke of a straightening cam (increase in magnetic attraction) without growing size of an electromagnet. SOLUTION: A mobile magnetic piece 19 is arranged integral on the side of a straightening cam 12 made of a resin by an insert molding and the mobile magnetic piece 19 is arranged as opposed to one end part (attraction surface 14a) of an inverted U-shaped core 14. Moreover, the tip of the mobile magnetic piece 19 is positioned on the extension of a rotary shaft 18 of the straightening cam 12 while the tip is brought closer to the other end part 145 of the inverted U-shaped core 14 to minimize a gap between the both (to almost zero). With such an arrangement, even when the straightening cam 12 (mobile magnetic piece 19) turns, the position of the tip of the mobile magnetic piece 19 will not move and the gap between the tip and the other tip 14b of the inverted U-shaped core 14 is kept minimal. This reduces leakage flux from the gap remarkably to increase a magnetic flux passing through the mobile magnetic piece 19 thereby enhancing the magnetic attraction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pachinko ball rectifier that performs an operation of sending pachinko balls flowing from a ball tray to a launch position or the like by rotating a commutation cam for each pachinko ball firing operation. is there.

[0002]

2. Description of the Related Art In a conventional general pachinko ball rectifier, a commutation cam is driven mechanically in conjunction with the striking action of a hammer of a launcher. Along with this, there is a device in which an electromagnet is used as a drive source of the rectifying cam to increase the degree of freedom in design. As an example thereof, as shown in FIG. 6, an electromagnet 3 in which a solenoid coil 2 is attached to an inverted U-shaped iron core 1 is used,
A rectifying cam 5 that rotates up and down about a shaft 4 is arranged below the electromagnet 3, and a movable magnetic piece 6 is fixed to the upper surface of the rectifying cam 5, and the movable magnetic piece 6 is formed into an inverted U-shaped iron core. 1
There is a configuration in which both end surfaces of the are opposed to each other. When the solenoid coil 2 is energized, the movable magnetic pieces 6 are attracted to both end surfaces of the inverted U-shaped iron core 1 as shown by the chain double-dashed line in FIG. Turn to
When the energization of the solenoid coil 2 is turned off, the commutation cam 5 rotates downward about the shaft 4 as shown by the solid line in FIG.

[0003]

By the way, the flow straightening cam 5
In order to improve the reliability of the rotating operation of (1), it is preferable to increase the magnetic attraction force acting on the movable magnetic piece 6 and to make the rotating stroke of the rectifying cam 5 large. The magnetic attraction force acting on the movable magnetic piece 6 is generated when the magnetic flux emitted from the end face of the inverted U-shaped iron core 1 passes through the movable magnetic piece 6, and the magnetic attraction force increases as the magnetic flux increases.

However, in the above-mentioned conventional structure, the straightening cam 5 is used.
Since the rotating shaft 4 of the U-shaped iron core 1 is separated from the inverted U-shaped iron core 1, when the movable magnetic piece 6 rotates downward together with the rectifying cam 5 when the electromagnet 3 is cut off, both end surfaces of the inverted U-shaped iron core 1 are And movable magnetic piece 6
Two large gaps Ga and Gb are formed between the two. When the electromagnet 3 is energized, the movable magnetic piece 6 is moved from this state.
Therefore, the magnetic flux generated from the end surface of the inverted U-shaped iron core 1 does not pass through the movable magnetic piece 6 and the magnetic flux (leakage magnetic flux) leaking from one end surface of the inverted U-shaped iron core 1 to the other end surface is generated. As a result, the magnetic flux passing through the movable magnetic piece 6 decreases and the magnetic attraction force becomes weak. Therefore, the conventional configuration is
In order to reduce the leakage flux due to the two gaps Ga and Gb, it is necessary to reduce the gaps Ga and Gb.
Therefore, the turning stroke of the flow straightening cam 5 cannot be made too large. If the turning stroke of the flow straightening cam 5 is small, there is little margin in the operation of sending out the pachinko ball, and there is a possibility that the pachinko ball may not be smoothly sent out due to an error in assembling parts.

In order to solve this problem, it is conceivable to increase the magnetic attraction force by enlarging the electromagnet 3, but enlarging the electromagnet 3 leads to cost reduction, size reduction, and power consumption reduction. Contrary to requirements, it is not a practical solution.

The present invention has been made in view of the above circumstances, and therefore an object thereof is to realize an increase in the rotation stroke (increase of the magnetic attraction force) of the rectifying cam without increasing the size of the electromagnet. It is possible to reduce cost, size, and
It is an object of the present invention to provide a pachinko ball rectifier capable of satisfying both the demand for low power consumption and the improvement in the reliability of the rotation operation of the rectifying cam.

[0007]

In order to achieve the above-mentioned object, the pachinko ball rectifier of the present invention has a set of pachinko balls flowing from a ball tray by rotating the commutation cam for each pachinko ball firing operation. In those that perform the sending operation,
An electromagnet having a solenoid coil mounted on an inverted U-shaped iron core is used as a drive source for rotationally driving the rectification cam, and a movable magnetic piece fixed vertically to a side surface of the rectification cam is used as the inverted U-shape.
The tip of the movable magnetic piece is positioned on the extension line of the rotating shaft of the rectifying cam so that the tip of the movable magnetic piece faces the attraction surface at one end of the U-shaped iron core, and the tip of the movable magnetic piece has a shape other than that of the inverted U-shaped iron core. The configuration is such that it is arranged close to the end.

In this structure, the tip of the movable magnetic piece is located on the extension line of the rotating shaft of the straightening cam, and the tip of the movable magnetic piece is brought close to the other end of the inverted U-shaped iron core. Even if the (movable magnetic piece) rotates, the position of the tip of the movable magnetic piece does not move and is kept close to the other end of the inverted U-shaped iron core. Therefore, even when the electromagnet is disconnected, the gap between the tip of the movable magnetic piece and the other end of the inverted U-shaped iron core is kept to a minimum (a state close to 0), and the leakage flux from the gap is kept. Is significantly reduced, the magnetic flux passing from the inverted U-shaped iron core through the inside of the movable magnetic piece is increased, and the magnetic attraction force acting between the movable magnetic piece and one end (adsorption surface) of the inverted U-shaped iron core is increased. To do. Moreover, the tip of the movable magnetic piece serves as the center of rotation, and the dimension from the center of rotation to the part where the magnetic attraction force acts is shorter than in the conventional case (Fig. 6), so that the attraction surface of the inverted U-shaped iron core Even if the gap size between the movable magnetic piece is the same as the conventional one, the rotation angle of the movable magnetic piece is expanded more than before,
The turning stroke of the flow straightening cam is enlarged.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIG.
It will be described with reference to FIG. First, a schematic configuration of the entire pachinko ball rectifier 11 will be described with reference to FIGS. 3 to 5. Electromagnet 1 serving as a drive source for rotating the rectifying cam 12
3 is a solenoid coil 15 on one side of the inverted U-shaped iron core 14.
The inverted U-shaped iron core 14 is fixed to the mounting base 16 made of plastic with screws 17.

On the other hand, the flow straightening cam 12 is integrally formed of plastic, and the rotary shaft 18 and the movable magnetic piece 19 are integrated with the flow straightening cam 12 by insert molding. As shown in FIG. 4, the rotary shaft 18 of the rectifying cam 12 has a pair of shaft support recesses 2 formed in a plastic cover 20.
1, the cover 20 is fitted and supported by the mounting base 16, and the cover 20 is fixed to the mounting base 16 by screws 22 so that the opening of the shaft support recess 21 is closed by the mounting base 16 to prevent the rotation shaft 18 from coming off. In this assembled state, the rectifying cam 12 is positioned laterally and obliquely below the electromagnet 13, and the rectifying cam 12 and the electromagnet 13 are covered with the cover 20.
As shown in FIG. 2, the rectifying cam 12 is attached to the mounting base 16.
A ball introducing port 23 for introducing a pachinko ball is formed in the upper part of the cover 20, and a ball guide 24 for guiding the pachinko ball introduced from the ball introducing port 23 onto the straightening cam 12 is formed in the cover 20. There is.

As shown in FIG. 1, the movable magnetic piece 19 fixed vertically to the side surface of the rectifying cam 12 is arranged so as to face one end (adsorption surface 14a) of the inverted U-shaped iron core 14. The movable magnetic piece 19 is formed in an L-shape with its tip side widened, its tip is located on the extension line of the rotating shaft 18 of the flow straightening cam 12, and the tip is the other end of the inverted U-shaped iron core 14. 14b is approached, and the gap between the two is minimized (almost 0).

Next, the operation of the pachinko ball rectifier 11 having the above structure will be described. When the electromagnet 13 is cut off and the magnetic attraction force disappears, the rectifying cam 12 rotates downward by its own weight as shown in FIGS. 1 (a-1) and (a-2), and as shown in FIG. 2 (a). As described above, one pachinko ball is sent out from the flow straightening cam 12, and at the same time, the succeeding pachinko ball flowing from the ball introducing port 23 of the mounting base 16 is received by the upper end of the flow straightening cam 12.

After that, when the electromagnet 13 is energized, the magnetic flux generated in the inverted U-shaped iron core 14 passes through the movable magnetic piece 19, so that a magnetic attraction force acts on the movable magnetic piece 19, and the magnetic force shown in FIG. b-1) and (b-2), as shown in FIG.
Are attracted to the attraction surface 14a of the inverted U-shaped iron core 14. As a result, the flow straightening cam 12 is rotated upward, and only one pachinko ball is received in the concave portion of the flow straightening cam 12 as shown in FIG. 2B. After that, when the electromagnet 13 is turned off, the pachinko ball in the concave portion of the rectifying cam 12 is sent out as described above.

The energization of the electromagnet 13 is turned on / off each time a launching device (not shown) launches a pachinko ball, whereby the rectifying cam 12 is moved up and down for each pachinko ball launching operation, and a ball pan ( Pachinko balls flowing from (not shown) are sent from the straightening cam 12 to the firing position one by one.

In the pachinko ball rectifier 11 described above, the tip of the movable magnetic piece 19 is located on the extension line of the rotating shaft 18 of the rectifying cam 12, and the tip of the movable magnetic piece 19 is the other end of the inverted U-shaped iron core 14. Since the rectifying cam 12 (movable magnetic piece 19) rotates because it is close to the portion 14b, the movable magnetic piece 19 does not move.
The other end portion 14 of the inverted U-shaped iron core 14 does not move the position of the tip of the
It is kept close to b. Therefore, even when the electromagnet 13 is cut off and the rectifying cam 12 (movable magnetic piece 19) is rotated downward, between the tip of the movable magnetic piece 19 and the other end 14b of the inverted U-shaped iron core 14. The gap is the smallest (almost 0)
The leakage flux from the gap is significantly reduced.

In the conventional structure shown in FIG. 6 described above, two large gaps Ga and Gb are formed between the inverted U-shaped iron core 1 and the movable magnetic piece 6 when the electromagnet 3 is cut off.
In this embodiment, there is only one large gap,
The magnetic resistance of the magnetic circuit formed by the inverted U-shaped iron core 14 and the movable magnetic piece 19 becomes small, and the leakage magnetic flux is remarkably reduced as compared with the conventional case. As a result, the magnetic flux passing through the inside of the movable magnetic piece 19 from the inverted U-shaped iron core 14 is significantly increased, and the magnetic attraction force acting between the movable magnetic piece 19 and the attraction surface 14a of the inverted U-shaped iron core 14 is greatly increased. Increase to. Therefore, even if the gap between the movable magnetic piece 19 and the attracting surface 14a of the inverted U-shaped iron core 14 is large, the movable magnetic piece 19 can be attracted with a sufficient attracting force, and the rotation of the rectifying cam 12 can be prevented. The dynamic stroke can be expanded.

Moreover, since the tip of the movable magnetic piece 19 becomes the center of rotation, and the distance from the center of rotation to the part where the magnetic attraction force acts becomes shorter than in the conventional case (FIG. 6), the inverted U-shaped iron core. Even if the size of the gap between the attracting surface 14a of 14 and the movable magnetic piece 19 is the same as the conventional one, the movable magnetic piece 1
The rotation angle of 9 can be expanded from the conventional one, and this point is also in this point, the rectifying cam 1
This has an advantageous effect on the expansion of the rotation stroke of 2.

As described above, in this embodiment, since the magnetic attraction force can be increased by reducing the leakage magnetic flux, the commutation cam 12 does not have to be upsized.
The rotation stroke of can be expanded, and even if there is some assembly error, the pachinko ball can be sent out smoothly with a large magnetic attraction force, reducing cost, downsizing, and low power consumption. It is possible to improve the reliability of the rotating operation of the rectifying cam 12 while satisfying the requirement of the realization.

In this embodiment, the tip of the movable magnetic piece 19 is made to approach the side edge of the other end 14b of the inverted U-shaped iron core 14, but it may be made to approach the lower surface of the other end 14b. You can

[0020]

As is apparent from the above description, according to the present invention, the tip of the movable magnetic piece is positioned on the extension line of the rotating shaft of the rectifying cam, and the tip of the movable magnetic piece is inverted U-shaped. Since it is configured to approach the other end of the die core, even if the rectifying cam (movable magnetic piece) rotates downward, the gap between the tip of the movable magnetic piece and the other end of the inverted U-shaped iron core is reduced. The gap can be kept to a minimum, the leakage flux can be reduced, the rotation stroke of the rectifying cam can be expanded (the magnetic attraction force can be increased) without increasing the size of the electromagnet, and the cost can be reduced. -It is possible to improve the reliability of the rotating operation of the rectifying cam while satisfying the requirements for downsizing and low power consumption.

[Brief description of the drawings]

FIG. 1 shows a relationship between an electromagnet, a rectifying cam and a movable magnetic piece according to an embodiment of the present invention, (a-1) is a side view showing a state when the electromagnet is disconnected, and (a-2) is the same. Front view,
(B-1) is a side view showing a state when the electromagnet is energized, (b-1)
2) is the same front view

2A is a vertical sectional side view of a commutation cam peripheral portion showing a state when the electromagnet is disconnected, and FIG. 2B is a vertical sectional side view of the commutation cam peripheral portion showing a state when the electromagnet is energized.

FIG. 3 is an external perspective view of a pachinko ball rectifier.

FIG. 4 is an exploded perspective view of a pachinko ball rectifier.

FIG. 5 is a vertical cross-sectional side view of a portion around the electromagnet.

FIG. 6 is a diagram illustrating a relationship between an electromagnet, a rectifying cam, and a movable magnetic piece in a conventional pachinko ball rectifier.

[Explanation of symbols]

11 ... Pachinko ball rectifier, 12 ... Commutation cam, 13 ... Electromagnet, 14 ... Inverted U-shaped iron core, 14a ... Adsorption surface (one end),
14b ... other end part, 15 ... solenoid coil, 16 ... mounting base, 20 ... cover, 18 ... turning shaft, 19 ... movable magnetic piece, 23 ... ball introduction port, 24 ... ball guide.

Claims (1)

[Claims] 1. A pachinko ball rectifier that performs an operation of sending out one pachinko ball flowing from a ball saucer by rotating the commutation cam for each pachinko ball firing operation, as a drive source for rotationally driving the commutation cam. An electromagnet having a solenoid coil attached to an inverted U-shaped iron core is used, and a movable magnetic piece fixed vertically to a side surface of the rectifying cam is attached to the inverted U core.
The tip of the movable magnetic piece is positioned on the extension line of the rotating shaft of the flow straightening cam so that the tip of the movable magnetic piece faces the attracting surface of one end of the U-shaped iron core, and the tip of the movable magnetic piece is reverse U-shaped.
A pachinko ball rectifier, which is arranged close to the other end of the V-shaped iron core.