JP2000042180A - Game ball shooting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a game ball shooting device that can be reduced in cost. SOLUTION: A solenoid body A is composed of a coil bobbin 2 wound with a coil 1, yokes 3a and 3b, a plunger 4, an output shaft 5, a return spring 10 and bearings 6. A housing 20 is provided to enclose the solenoid body A and fitted in conformity to the shape of a fitting part of a game board. The output shaft 5 is slidably supported by the bearings 6, 6 held to the housing 20. The housing 20 is provided with fitting pieces 26 conformed to the shape of the fitting part of the game board. The housing 20 is composed of divided bodies 20a 20b, and the fitting pieces 26 have holes 22 formed to fix the divided bodies 20a and 20b. These fixing holes 22 are used as fitting holes for fitting the housing 20 to the fitting part of the game board using screws or the like. The structural difference of the fitting part can be coped with only by changing the shape of the housing 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a game ball launching apparatus for firing a game ball (pachinko ball) used for a game board (pachinko).

[0002]

2. Description of the Related Art Conventionally, as a game ball launching device for firing a game ball made of metal (steel ball), a synchronous motor system,
Step motor type, rotary solenoid type, and linear solenoid type are provided.

By the way, in a game ball launching device, 5000
The ball can be repetitively moved about 100,000 times to 100 million times, the ball flight distance of the playing ball can be changed arbitrarily by operating the handle, and the ball flight distance is constant and varied when the handle position is kept constant It is required that there be no shocks and operating noises when hitting a ball, that there is no unevenness in ball jumping for each unit without adjustment during mass production, and the like. In addition, the firing frequency of the game ball per minute in the game board,
It is set to be 100 or less per minute, and is fired at a frequency extremely close to 100 or less in a range not exceeding 100 or more.

In view of the above requirements, in a synchronous motor type, step motor type, or rotary solenoid type game ball launching device, the trajectory of the rotary lever and the launch direction of the game ball deviate, so that the ball flight distance becomes unstable. There is a defect. On the other hand, in the play ball launching device of the linear solenoid type, as shown in FIG. 41, the moving direction of the output shaft 5 of the solenoid body A (the direction of arrow C in FIG. 41) and the launch direction of the play ball B (FIG. 41). (Direction of the arrow D in the drawing) coincides with the firing time, so that there is an advantage that the ball flight distance is stabilized. Hereinafter, a conventionally proposed linear solenoid type playing ball launching device will be described.

[0005] (Conventional Example 1) [0005] As shown in FIG. 42, a coil bobbin 2 having a tubular shape and wound with a coil 1 and having flanges 2a at both ends, as shown in FIG. A yoke 3a for accommodating the yoke 3a, a yoke 3b caulked to the yoke 3a so as to cover the opening surface of the yoke 3a, and a plunger 4 inserted into the through hole 2c of the coil bobbin 2 and linearly reciprocated between two specified positions. And an output shaft 5 that cooperates with the plunger 4 by energizing the coil 1 to fire a game ball previously set at a predetermined position on the game board near one of the two positions. A return spring 10 composed of a coil spring for returning the plunger 4 to the initial position which is the other of the two positions; and a bearing 6 through which one end of the output shaft 5 is inserted to slidably support the output shaft 5. , And a bearing 6 'the plunger 4 is slidably supported to the plunger 4 is inserted.

The output shaft 5 has an embossing member 9 made of an elastic material attached to one end on the side inserted into the bearing 6, and the other end pressed into the plunger 4. Here, the plunger 4 reciprocates linearly at a frequency of, for example, about 100 times per minute by controlling the energization of the coil 1. Note that the weight of the plunger 4 is about 20 g to 30 g.

The return spring 10 is held between the yoke 3 a and a disk-shaped plate 15 integrated with the plunger 4. The output shaft 5 is provided with a first stopper 13 made of an elastic body near the embossing member 9, and the plunger 4 is provided with a second stopper 14 made of an elastic body positioned by the plate 15. I have.

In this conventional example, the bearing 6 supporting the output shaft 5 is moved in a direction perpendicular to the axial direction of the output shaft 5 in order to absorb the axial deviation between the two bearings 6 and 6 'during assembly. By fixing the fixed iron core 12 by pressing with a fixing member 11 made of rubber,
The bearing 6 is positioned.

In this conventional example, the yoke 3a and the yoke 3b also serve as the outer shell of the solenoid.
Has a mounting hole 3 for mounting to a game board using screws.
3 are perforated. Therefore, when the conventional game ball launching device is mounted on a predetermined portion of the game board, a screw is inserted into the mounting hole 33 and is directly fixed to the game board with the screw. In such a configuration, there is no portion where the plunger 4 absorbs the impact force applied to the yokes 3b, 3a via the respective stoppers 13, 14, so that the yokes 3a, 3b, the respective stoppers 13, 14, the mounting portion may be damaged, Excessive vibration and sound are generated on the amusement board, which is not practical. Actually, an external buffer structure is required as in Conventional Example 3 described later.

Next, the basic operation will be described.

When the coil 1 is not energized, the plunger 4 is at a predetermined initial position shown in FIG. 43 (c) by the spring force of the return spring 10, and when a predetermined exciting current is applied to the coil 1, the plunger 4 Is attracted to the yoke 3b and moves toward the fixed iron core 12 (accelerates) against the spring force of the return spring 10 as shown in FIG. At the position near the end of this acceleration operation, the driving member 9
Collides with a game ball previously set at a predetermined position on the game board, and the game ball is fired. Thereafter, the second stopper 14 collides with the yoke 3a as shown in FIG. 43 (b), whereby the movement of the plunger 4 is restricted. Thereafter, the plunger 4 returns to the initial position by the spring force of the return spring 10, and stops at the initial position when the first stopper 13 collides with the yoke 3b.

(Conventional Example 2) As another type of game ball launching device, as shown in FIG. 44, there is provided a coil bobbin 2 having a tubular shape and wound with a coil 1 and having flanges 2a at both ends. A yoke 3a for accommodating the coil bobbin 2, a yoke 3b caulked to the yoke 3a so as to cover an opening surface of the yoke 3a, a cylindrical guide pipe 8 inserted through a through hole of the coil bobbin 2, and a guide pipe 8 Through hole 8
and a plunger 4 slidably inserted into the plunger c and linearly reciprocating between two specified positions, and a predetermined position of the game board near one of the two positions by cooperating with the plunger 4 by energizing the coil 1. An output shaft 5 configured to fire a game ball, a return spring 10 including a coil spring configured to return the plunger 4 to an initial position where the output shaft 5 is the other of the two positions, and an output shaft. The bearing 5 includes two bearings 6, 6, each of which is inserted at both ends thereof, for slidably supporting the output shaft 5, and bearing holders 7, 7 for holding the bearings 6, 6.

The bearing holders 7, 7 have disk-shaped flange pieces 7a, 7a and are fixed to the yokes 3a, 3b. Both ends of the guide pipe 8 are bearing holders 7, respectively.
7 and positioned. That is, the guide pipe 8 is used to improve the positioning accuracy of each bearing 6,6. In addition, each yoke 3a, 3b
Each has an insertion hole through which the guide pipe 8 is inserted. A driving member 9 made of an elastic material is attached to one end of the output shaft 5.

Incidentally, also in this conventional example, the yoke 3a
The yoke 3b also serves as an outer shell of the solenoid, and the yoke 3a has a mounting piece 31 having a mounting hole 33 for mounting to a game board using screws, which is continuously and integrally extended. Therefore, when the conventional game ball launching device is mounted on a predetermined portion of the game board, a screw is inserted into the mounting hole 33 and is directly fixed to the game board with the screw.

Next, the basic operation will be described.

When the coil 1 is not energized, the plunger 4 is at a predetermined initial position shown in FIG. 45D by the spring force of the return spring 10, and when a predetermined exciting current is applied to the coil 1, the plunger 4 Is attracted to the yoke 3a and moves to the left in FIG. 45A (accelerates) against the spring force of the return spring 10 as shown in FIG. 45A. At the position near the end of this acceleration operation, the driving member 9
Collides with a game ball previously set at a predetermined position on the game board, and the game ball is fired. Thereafter, when the plunger 4 separates from the yoke 3b as shown in FIG. 45 (b), a suction force acts in a direction opposite to that and the moving speed of the plunger 4 is reduced (decelerates). Thereafter, the plunger 4 moves in a direction to return to the initial position by the spring force of the return spring 10 as shown in FIG. 45C, and the stopper 13 collides with the bearing holder 7 as shown in FIG. To stop at the initial position.

(Conventional Example 3) By the way, as a configuration for preventing the impact and sound accompanying the operation of the play ball launching device from being transmitted to the play ball body, the solenoid itself is made movable with respect to the play board. And the buffer member 4 as shown in FIG.
7, 48 have been proposed to absorb shock (for example, Japanese Patent Publication No. 61-29375,
JP-B-62-292184, JP-B-2-8299
0, Japanese Patent Publication No. 2-88090). In addition,
The same components as those in the conventional example 1 are denoted by the same reference numerals.

In this game ball launching device, a certain number of signals are sent for a certain period of time by manipulating operation means (not shown), and at the same time, power is supplied from a power source to perform a hitting operation and play.

In this operation, when the solenoid main body A is excited to start firing, the launching member 9 rushes into the starting end, fires the game ball B set in advance, and simultaneously connects the second stopper 14 to the case main body 60. The projecting member 9 is caused to collide to regulate the amount of protrusion. When the plunger 4 is returned by the return spring 10 due to demagnetization, the first
The stopper 13 collides with the case main body 60 to determine the retreat position. As a result, the striking stroke of the plunger 4 is made uniform by the two stoppers 13 and 14, and the flying distance of the game ball B under a constant current is uniform. Will be aligned.

When the plunger 4 reciprocates linearly, when the second stopper 14 collides with the case body 60, the cushioning member 48 is compressed to absorb the shock, and then the plunger 4 is returned by the return spring 10. When this is done, the shock of the first stopper 13 is absorbed by the other buffer member 47, and the vibration that reaches the play board through the mounting frame 50 and the mounting substrate 100, and the noise accompanying this is automatically absorbed. .

(Conventional Example 4) The basic structure of this conventional example is substantially the same as that of Conventional Example 1, and in order to restrict the rotation of the plunger 4, as shown in FIGS.
The protrusions 10c, 10c are formed by vertically raising the ends of the end winding portions at both ends of the protrusions 10c, 1c.
The rotation of the plunger 4 is stopped by inserting one of the holes 0c into the hole of the yoke 3a and the other into the hole of the plate 15. Note that the same components as those in Conventional Example 1 are denoted by the same reference numerals, and description thereof is omitted.

(Conventional Example 5) The basic structure of this conventional example is substantially the same as that of Conventional Example 2, and in order to restrict the rotation of the plunger 4, as shown in FIGS. A groove 4a having a predetermined width is formed over the entire length of the coil bobbin, a notch groove is formed in the guide pipe 8, and a projection 2b is formed on the inner peripheral surface of the through hole 2c of the coil bobbin 2 over the entire length in the axial direction. Are provided so that the projection 2b slides in the groove 4a of the plunger 4. In addition,
The same components as in the second conventional example are denoted by the same reference numerals, and description thereof will be omitted.

(Conventional Example 6) The basic configuration of this conventional example is substantially the same as that of Conventional Example 2, and in order to restrict the rotation of the plunger 4, as shown in FIGS. The portion 5 b ′ is machined into a D-shaped cross section cut in the axial direction, and the shape of the insertion hole of the bearing 6 is adjusted to the shape of the cut to restrict the rotation of the output shaft 5. It is to stop.

[0024]

However, in the play ball launching devices of the prior art examples 1, 2, 4, 5, and 6, the yoke 3a is provided with a structure for attaching to the play board. In the case where there are many types, if the shapes of the respective attachment parts are different, even if the components other than the yokes 3a and 3b such as the plunger 4 and the coil bobbin 2 are common, one type is provided for each game board to be incorporated. , And as a result, the variety of solenoids increased, and there were many problems in terms of inventory management, delivery, and cost. In addition, the shape of the yokes 3a and 3b may be complicated depending on the shape of the mounting portion in the game board, and the yokes 3a and 3b may be complicated.
In some cases, the workability of the sheet metal processing of 3b was deteriorated and the cost was increased.

In the conventional examples 1 and 4, one of the bearings 6 is fixed by pressure by the fixing member 11 made of an elastic body, so that the positional accuracy of the output shaft 5 can be adjusted with high accuracy at the time of assembly. In some cases, external force is applied to the output shaft 5 after assembly, and the position of the bearing 6 is shifted. Further, in the conventional examples 1 and 4, since a part of the output shaft 5 is press-fitted into the center portion of the plunger 4 so that the axial directions thereof coincide with each other, the component machining accuracy of each of the plunger 4 and the output shaft 5 is reduced. Need to improve,
In the process of press-fitting the output shaft 5 into the plunger 4, it is necessary to control the process so that the output shaft 5 does not tilt, and there is a problem that it takes time.

In the conventional examples 2, 5, and 6, the flange pieces 7a, 7a of the bearing holders 7, 7 are connected to the yoke 3a,
3b, the bearings 6 and 6 have a problem in that the bearings 6 and 6 are misaligned when the accuracy of the parallelism between the surfaces of the yokes 3a and 3b abutting on the flange pieces 7a and 7a is low. In the conventional examples 2, 5, and 6, two bearings 6,
Although the guide pipe 8 is used to obtain the coaxiality of 6, the coaxiality cannot be increased much because the bearing holders 7, 7 are fixed to the yoke 3a having an unstable shape. there were.

In the prior arts 1 and 4, when the plunger 4 is attracted by the yoke 3b and accelerated as shown in FIG. 43A, the second stopper 14 as shown in FIG.
43c, when the first stopper 13 collides with the yoke 3b as shown in FIG. 43 (c), an impact is applied to the yokes 3a and 3b, and vibration is transmitted to the play board and noise is generated. There is a fear that it may cause discomfort to the player.

In Conventional Examples 2, 5, and 6, FIG.
When the plunger 4 is attracted and accelerated by the yoke 3a as shown in (a), and when the direction of the suction force acting on the plunger 4 reverses as shown in FIG. 45 (b), as shown in FIG. 45 (d). When the first stopper 13 collides with the bearing holder 7, shocks are applied to the yokes 3a and 3b, etc., and vibrations are transmitted to the play board or noise is generated, which may cause discomfort to the player. was there.

In order to avoid this kind of inconvenience, the configuration of the prior art 3 can be cited. In the configuration of the prior art 3, the cushioning members 47 and 48, the mounting frame 50 and the like are arranged around the case body 60 of the solenoid. Space is needed to
In addition, the number of parts increases, so that the parts cost increases, and there is a problem that the work of attaching to the game board becomes troublesome. In the third conventional example, since the case body 60 is semi-fixed with rubber or the like, the set position of the case body 60 is likely to be unstable, and if the set position is shifted, the launch member 9 collides with the game ball. Since the stroke position of the plunger 4 at the time is shifted, there is a problem that the force transmitted to the playing ball varies, and the flying distance of the playing ball varies.

In the conventional example 4, the rotation of the plunger 4 is regulated by using the return spring 10 composed of a coil spring. However, since the return spring 10 has a certain degree of freedom in the rotational direction, There is a problem that rotation of the plunger 4 cannot be completely prevented.
In addition, the protrusions 10c, 10c of the end winding portion of the return spring 10
Is simply inserted into the respective holes of the plate 15 and the yoke 3a, so that the protrusion 10c may fall out of the holes due to vibration of the return spring 10 or external force during transportation. In addition, since the process of forming the projection 10c needs to be set up at right angles to the direction of the end winding, the processing is troublesome, and the deformation of the end winding and the cost of the return spring 10 are increased. was there.

In the conventional example 5, the plunger 4
Groove 4a and the projection 2b of the coil bobbin 2 slide, so that the sliding resistance affects the moving speed of the plunger 4,
There has been a problem that the ball tends to be uneven. In addition, the formation of the groove 4a in the plunger 4 reduces the cross-sectional area of the magnetic path, so that the firing force of the game ball (the flight distance of the game ball) is reduced. Further, there is a problem that the life of the solenoid is shortened due to generation of wear powder due to sliding. In the conventional example 5, the guide pipe 8
In this case, it is necessary to form a notch groove for inserting the projection 2b, so that the accuracy of positioning (coaxiality alignment) of the bearing 6 is deteriorated.

Further, the conventional example 6 is characterized in that a part 5b 'of the cylindrical output shaft 5 is cut so as to have a D-shaped cross section. Since it is difficult to perform centerless polishing or the like on the cut surface even after the polishing, the surface roughness of the processed surface cannot be increased, and the manufacturing cost of the output shaft 5 becomes extremely high. Further, since the cross-sectional shape of the insertion hole of the bearing 6 needs to be adjusted to the cross-section of the cut shape of the output shaft 5, the surface roughness of the sliding surface cannot be increased on both the output shaft 5 side and the bearing 6 side. There is a problem that dynamic wear easily occurs and it is difficult to extend the life.

The present invention has been made in view of the above circumstances, and an object common to the first to tenth aspects of the present invention is to provide a game ball launching apparatus capable of reducing costs. It is another object of the present invention to provide a game ball launching device capable of stabilizing the flight distance of a game ball at low cost.
It is another object of the present invention to provide a low-cost game ball launching device in which vibration and impact transmitted to a game board are small.

[0034]

According to a first aspect of the present invention, there is provided a plunger which reciprocates linearly between two prescribed positions, and a plunger which moves in response to excitation of a coil. And a yoke block composed of a coil and a yoke to be moved respectively, and
An output shaft for firing a game ball set in a predetermined position of the game board in the vicinity of one of the positions, and a solenoid body having the solenoid body housed therein and a shape of a mounting portion of the game board. In the case of a game ball launcher for each user, the characteristics required of the solenoid body are the same, and only the structure of the mounting portion of the game board is different, the solenoid is provided. Since the structure of the main body can be made common and can be dealt with by changing only the housing, cost reduction becomes possible. In addition, since the housing does not need to form a magnetic path, there are few restrictions on the shape and material, and if the housing is formed of resin, it is possible to cope with a complicated mounting structure and to reduce the cost and weight. Can be achieved. The housing is zinc,
If it is made of a metal such as brass or aluminum, the specific gravity increases and the weight increases compared to the case of resin,
The impact transmitted from the solenoid body to the play board can be reduced.

According to a second aspect of the present invention, there is provided a coil bobbin having a cylindrical shape and wound with coils and having flanges at both ends, a yoke for accommodating the coil bobbin, The plunger moves linearly back and forth between the plunger, and cooperates with the plunger in response to the excitation of the coil.
An output shaft for firing a game ball preset at a predetermined position on the game board near one of the positions, and a return for returning the plunger to an initial position where the output shaft is the other of the two positions. It has a solenoid body consisting of a spring and two bearings through which both ends of the output shaft are respectively inserted to slidably support the output shaft, and accommodates the solenoid body and fits the shape of the mounting portion of the play board. In the case of a game ball launching apparatus for each user, which has the same characteristics required for the solenoid body and differs only in the structure of the mounting portion of the game board, the structure of the solenoid body is provided. Can be dealt with by changing only the housing, so that the cost can be reduced. In addition, since the housing does not need to form a magnetic path, there are few restrictions on the shape and material, and if the housing is formed of resin, it is possible to cope with a complicated mounting structure and to reduce the cost and weight. Can be achieved. Further, if the housing is formed of a metal such as zinc, brass, or aluminum, the specific gravity is large and the weight is increased as compared with the case of resin, so that the impact transmitted from the solenoid body to the play board can be reduced. Further, since the housing is provided, it is not necessary to process the yoke according to the shape of the mounting portion of the game board as in the conventional example, so that the cost required for processing the yoke and the assembly cost can be reduced.

According to a third aspect of the present invention, in the second aspect of the present invention, there is provided a cylindrical guide pipe which is inserted through the through hole of the coil bobbin and into which the plunger is inserted, and each bearing is provided at both ends of the guide pipe. Therefore, the coaxiality of the two bearings is determined only by the accuracy of the parts of the bearing holder and the guide pipe, and a high coaxiality of the two bearings can be obtained. It is possible to stabilize the flying distance of the game ball at low cost at a low cost.

According to a fourth aspect of the present invention, in the third aspect, the yoke block including the coil and the yoke is movable with respect to the housing in a direction parallel to the direction of movement of the output shaft, and the direction of movement of the yoke block Is provided on both sides of the yoke block, the yoke block is movable, and the movement of the yoke block is restricted by the buffer member. The vibration and impact sound transmitted to the game board through the game can be reduced at low cost, and it is possible to provide a player with a comfortable game for a long time.

According to a fifth aspect of the present invention, in the invention of the fourth aspect, the narrow base end of each bearing is supported by the housing, and the guide pipe block including the bearing and the guide pipe is moved in the moving direction of the output shaft. Is movable relative to the housing in a direction parallel to the guide pipe, and between the wide portion of each bearing and the housing, there is provided a cushioning member made of an elastic body for restricting the movement of the guide pipe block. By making the block movable, vibration and impact sound transmitted from the guide pipe block to the play board through the housing can be reduced, and it is possible to provide a player with comfortable play for a long time.

According to a sixth aspect of the present invention, in the first to fifth aspects of the present invention, a driving member attached to one end of the output shaft and colliding with a game ball is provided between the driving member and the housing. A stopper made of an elastic body that is attached to the output shaft and restricts movement of the embossing member.
It has a rotation stopper which is parallel to the direction of movement of the output shaft and is slidable with respect to the guide groove formed in the housing, and prevents rotation of the output shaft. Unlike the case where the rotation of the plunger is prevented, the cross-sectional area of the magnetic path is not reduced, and the rotation of the output shaft can be regulated at low cost without affecting the flight distance of the play ball.

According to a seventh aspect of the present invention, in the fourth aspect of the invention, each bearing is supported by the housing, and a guide pipe block including the bearing and the guide pipe is mounted on the housing in a direction parallel to the moving direction of the output shaft. And a weight cooperating with the guide pipe block in the housing is provided on the other side of the two positions, and restricts movement of the weight between the weight and the housing in the moving direction. Since a buffer member made of an elastic body is provided, by making the guide pipe block movable, it is possible to reduce vibration and impact sound transmitted from the guide pipe block to the game board through the case,
It is possible to provide a player with a comfortable game for a long time, and furthermore, by providing a weight that cooperates with the guide pipe block, even if the hardness of the buffer member is reduced, the plunger and the output shaft are separated from each other. The displacement of the guide pipe block due to the rebound of the plunger block and the collision of the plunger can be suppressed, and by using a small hardness as the buffer member, vibration and impact transmitted from the guide pipe block through the housing to the play board can be achieved. Sound can be further reduced.

According to an eighth aspect of the present invention, in the invention of the seventh aspect, the cushioning member made of an elastic body for restricting the movement of the weight is provided.
A smooth projection is provided on at least one of the outer peripheral surface and the inner peripheral surface at a portion which is cylindrical and is disposed so that the output shaft and the axial direction coincide with each other, and is bent at the time of compressive deformation of the cushioning member. Therefore, by providing a gentle protrusion on at least one of the outer peripheral surface and the inner peripheral surface in a portion that bends during compression deformation of the cushioning member, local wear during compression deformation of the cushioning member is reduced. The cost can be reduced, the life can be prolonged, and the local abrasion during compression deformation of the buffer can be suppressed. Since the amount of compressive deformation can be increased and the amount of displacement of the guide pipe block can be increased, the vibration and impact sound transmitted from the guide pipe block through the housing to the play board can be further reduced. Door can be.

According to a ninth aspect of the present invention, there is provided a coil bobbin having a tubular shape and wound with coils and having flanges at both ends, a yoke for accommodating the coil bobbin, The plunger moves linearly back and forth between the plunger, and cooperates with the plunger in response to the excitation of the coil.
An output shaft for firing a game ball preset at a predetermined position on the game board near one of the positions, and a return for returning the plunger to an initial position where the output shaft is the other of the two positions. It has a solenoid body consisting of a spring and two bearings through which both ends of the output shaft are respectively inserted to slidably support the output shaft, and accommodates the solenoid body and fits the shape of the mounting portion of the game board. The return spring comprises a coil spring, and a protrusion protruding in the direction of the winding shaft is provided at an end of the end winding portion at both ends, and the bearing on one of the two positions in the direction of the winding shaft is provided. And the spring guide fixed to the plunger, and the one side bearing and the spring guide are respectively provided on the contact surfaces of the return spring with the end turns. It is characterized in that a rotation prevention groove is provided radially to the extent that the part can enter and prevent rotation of the return spring, the characteristics required for the solenoid body are the same, only the structure of the mounting part of the play board is different In the case of a game ball launching device for each user, the cost can be reduced because the structure of the solenoid body can be made common and only the housing can be changed. In addition, since the housing does not need to form a magnetic path, there are few restrictions on the shape and material, and if the housing is formed of resin, it is possible to cope with a complicated mounting structure and to reduce the cost and weight. Can be achieved. Also,
If the housing is formed of a metal such as zinc, brass, or aluminum, the specific gravity is large and the weight is increased as compared with the case of resin, so that the impact transmitted from the solenoid body to the play board can be reduced. Further, since the housing is provided, it is not necessary to process the yoke according to the shape of the mounting portion of the game board as in the conventional example, so that the cost required for processing the yoke and the assembly cost can be reduced. Further, at the ends of the end turns at both ends of the return spring composed of a coil spring, projections projecting in the direction of the winding axis are provided, and the one-side bearing and the spring guide come into contact with the end turns of the return spring. In addition, since a rotation preventing groove is provided radially enough to prevent the rotation of the return spring into which the protruding portion enters, the groove is formed in the plunger as in the conventional example to prevent the rotation of the plunger. The cross-sectional area of the magnetic path does not decrease, and the speed of the plunger does not decrease due to sliding friction, and the rotation of the output shaft can be regulated at low cost without affecting the flight distance of the play ball. There is no part that wears away as in the case of preventing the rotation of the plunger by forming a groove in the groove, so that the life can be extended. Further, the protrusion provided on the return spring may be formed by using the burr at the time of cutting as it is, or may be formed by bending the end portion, and provided on each of the bearing and the spring guide on one side. If the bearing and the spring guide are molded parts, the rotation preventing groove does not require any special processing, and can prevent rotation of the return spring at low cost.

According to a tenth aspect of the present invention, there is provided a coil bobbin having a cylindrical shape and wound with coils and having flanges at both ends, a yoke for accommodating the coil bobbin, A plunger that reciprocates linearly between, and an output shaft that cooperates with the plunger in response to the excitation of the coil and fires a game ball that is preset at a predetermined position on the game board near one of the two positions. A return spring for returning the plunger to an initial position in which the output shaft is the other of the two positions, and two bearings through which both ends of the output shaft are inserted to slidably support the output shaft. It has a solenoid body, and has a housing for accommodating the solenoid body and mounting it according to the shape of the mounting part of the game board. The return spring is a coil spring. Protrusions are provided at the ends of the end winding portions at both ends to protrude inward in the radial direction, and are held between the bearing on one side of the two positions and the spring guide fixed to the plunger in the winding axis direction. The one-side bearing and the spring guide are each provided with an anti-rotation groove having such a degree that the protruding portion enters the outer peripheral surface of a portion protruding from a contact surface of the return spring with the end turn portion to prevent rotation of the return spring. Are provided at intervals along the circumferential direction, and the characteristics required for the solenoid body are the same, and only the structure of the mounting portion of the game board is different for each user. In the case of (1), the structure of the solenoid body can be made common and can be dealt with by changing only the housing, so that the cost can be reduced. In addition, since the housing does not need to form a magnetic path, there are few restrictions on the shape and material, and if the housing is formed of resin, it is possible to cope with a complicated mounting structure and to reduce the cost and weight. Can be achieved. Also,
If the housing is formed of a metal such as zinc, brass, or aluminum, the specific gravity is large and the weight is increased as compared with the case of resin, so that the impact transmitted from the solenoid body to the play board can be reduced. Further, since the housing is provided, it is not necessary to process the yoke according to the shape of the mounting portion of the game board as in the conventional example, so that the cost required for processing the yoke and the assembly cost can be reduced. Further, a protrusion protruding inward in the radial direction is provided at an end of the end turn portion at both ends of the return spring formed of a coil spring, and the one side of the bearing and the spring guide comes into contact with the end turn portion of the return spring. On the outer peripheral surface of the part protruding from the surface, a rotation preventing groove is provided along the circumferential direction so that the protrusion can enter and prevent rotation of the return spring. As in the case of forming a groove to prevent rotation of the plunger, the cross-sectional area of the magnetic path does not decrease, and the speed of the plunger does not decrease due to sliding friction. The rotation of the output shaft can be regulated at a low cost, and there is no part that wears out unlike the case of forming a groove in the plunger to prevent the rotation of the plunger. Can. Further, the protrusion provided on the return spring may be formed by using the burr at the time of cutting as it is, or may be formed by bending the end portion, and provided on each of the bearing and the spring guide on one side. If the bearing and the spring guide are molded parts, the rotation preventing groove does not require any special processing, and can prevent rotation of the return spring at low cost.

[0044]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) As shown in FIG. 1, a game ball launching device according to the present embodiment is a coil bobbin having a tubular shape, on which a coil 1 is wound and having flanges 2a at both ends. 2
A yoke 3a for accommodating the coil bobbin 2, and a yoke 3
(a) a yoke (3b) combined with the yoke (3a) to cover the opening surface of (a), and a plunger (4) inserted into the through hole (2c) of the coil bobbin (2) and reciprocated linearly between two specified positions.
Cooperates with the plunger 4 in response to the excitation of the coil 1 and
An output shaft 5 for firing a game ball preset at a predetermined position of the game board near one of the positions, and the plunger 4 is moved to an initial position where the output shaft 5 is the other of the two positions. Return spring 10 for returning, output shaft 5
Has a solenoid body A comprising two bearings 6 and 6 slidably supporting the output shaft 5 at both ends thereof. A housing 20 is provided. The return spring 10 is made of a coil spring.
It is held between the plunger 4 and the inner surface of the housing 20.

The output shaft 5 penetrates the plunger 4 and is integrated. Both ends are supported by the bearings 6 and 6, respectively, and protrude from the housing 20. put it here,
The plunger 4 reciprocates linearly, for example, at a frequency of 100 times per minute by controlling the energization of the coil 1. Further, at one end of the output shaft 5, a driving member 9 made of an elastic material which collides with a game ball when the output shaft 5 moves is attached. Further, a stopper 13 made of an elastic body is attached to the output shaft 5 near the embossing member 9. Here, the stopper 13 has a function of regulating the moving range of the plunger 4 in the direction in which the return force of the return spring 10 works.

As shown in FIG. 3, the stopper 13 has a disc-shaped stopper main body 13a having a hole 13c into which the output shaft 5 is press-fitted formed in the center, and a continuous integral from the periphery of the stopper main body 13a. It comprises a strip-shaped rotation preventing portion 13b which is extended and prevents rotation of the stopper body portion 13a. Here, the stopper 13 cooperates with the output shaft 5, but the rotation preventing portion 13 b slides on the inner surface of the guide groove 24 a of the U-shaped guide portion 24 continuously and integrally extended from the housing 20. , The rotation of the stopper 13 is prevented, and as a result, the output shaft 5 and the plunger 4
Is prevented from rotating. Therefore, by appropriately setting the width of the guide groove 24a and the width of the rotation preventing portion 13b, the output shaft 5 and the output shaft 5 can be provided without providing the projection 10c (see FIG. 49) on the return spring 10 unlike the conventional example 4. The rotation of the plunger 4 can be regulated. Further, unlike the conventional example 5, the magnetic path cross-sectional area does not decrease unlike the case where the groove 4a (see FIG. 51) is formed in the plunger 4 to prevent rotation, so that the play distance of the play ball is affected. I will not give. Also, a groove 4a is formed in the plunger 4,
Since it is not necessary to project the projection 2b on the coil bobbin 2, the rotation of the output shaft 5 can be prevented at low cost, and the flying distance of the game ball can be stabilized.

In this embodiment, the stopper 13
Is formed of an elastic body such as rubber, but the material is
The guide groove 24 has such a strength that it does not fall out of the narrow portion 5c of the output shaft 5 due to an impact at the time of collision with the housing 20.
It is desirable to use a material that has low frictional resistance and small wear when sliding on the inner side surface of a.

The housing 20 is divided into two parts 20a.
And the divided body 20b, and the shape of the divided bodies 20a and 20b may be appropriately set according to the shape of the mounting portion of the game board.

As shown in FIG. 4, the yokes 3a and 3b are formed by fitting notches 3g and 3g formed in a U-shaped yoke 3a with protrusions 3h and 3h formed in a rectangular plate-shaped yoke 3b. The yokes 3a and 3b according to the present embodiment are positioned by being housed in the internal space of the rectangular parallelepiped housing body 27 of the housing 20, so that caulking may not be performed. 3
Instead of a and 3b, so-called horizontal split yokes 3c and 3d having a U-shape as shown in FIG. 5, for example.
Or so-called vertical split yokes 3e and 3f having a U-shape as shown in FIG. 6 may be used. With such a shape that does not perform caulking, the yoke forming process can be simplified.

The housing 20 has projections 25 projecting from both ends of the housing body 27, and the bearing 6 is arranged near the center of the tip of each projection 25. Further, the housing 20 is provided with a mounting piece 26 corresponding to the shape of the mounting portion of the game board. The hole 22 is used as a mounting hole for mounting to a mounting portion of the game board using a screw or the like.

Since the housing 20 does not need to form a magnetic path, there are few restrictions on the shape and material, and if the housing 20 is made of resin, it is easy to mold and can cope with a complicated mounting structure. And cost reduction and weight reduction can be achieved. In short, it is possible to cope with a more complicated mounting structure as compared with the case where the yoke 3a is provided with a mounting structure to the game board as in the conventional examples 1, 2, 4, 5, and 6. Further, the housing 20 is made of zinc,
When formed of a metal such as brass or aluminum, the specific gravity is increased and the weight is increased as compared with the case of formed of a resin, so that the impact transmitted from the solenoid body A to the play board can be reduced.

Further, since the housing 20 can be processed by resin integral molding or die casting, and the bearings 6 and 6 can be fixed by the housing 20, the conventional examples 1, 2, 4, 5, and 5 can be processed.
6, two bearings 6 and 6 are used as compared with the case where the bearing 6 and the bearing holder 7 are fixed to the unstable yokes 3a and 3b.
Since the coaxiality of the output shaft 6 can be easily obtained, the twisting of the output shaft 5 can be reduced, the operation of the reciprocating linear movement can be stabilized, and the flying distance of the game ball can be stabilized.

In this embodiment, in the case of a game ball launching device for each user who has the same characteristics required for the solenoid body A and differs only in the structure of the mounting portion of the game board, the structure of the solenoid body A is shared. As shown in FIG.
Since it is possible to cope with this by changing the shape of only 0, the cost can be reduced. In the game ball launching device shown in FIG. 7, mounting portions 21 and 21 are integrally formed with the housing 20 of FIG.
Mounting holes 23 for mounting the game board to the mounting area using screws or the like are formed in the mounting holes 21 and 21.

Next, the operation of the game ball launching device having the configuration shown in FIG. 1 will be described.

When the coil 1 is not energized, the plunger 4 is at a predetermined initial position shown in FIG. 2D by the spring force of the return spring 10, and when a predetermined exciting current is applied to the coil 1, the yoke 3 is turned on. A magnetic flux is generated between the plunger 4 and the plunger 4, and the plunger 4 is attracted to the yoke 3a.
2 (a) against the spring force of the return spring 10 as shown in FIG.
It moves to the left in (a) (accelerates). At a position near the end of the acceleration operation, the launching member 9 collides with a game ball previously set at a predetermined position on the game board, and the game ball is fired. Note that an arrow indicated by a dashed line in FIG. 2A indicates the flow of magnetic flux.

Thereafter, as shown in FIG. 2 (b), when the rear end of the plunger 4 (the end remote from the embossing member 9) passes through the insertion hole of the yoke 3b, the rear end of the plunger 4 and the yoke 3 Attraction force acts between the plunger 3b and the plunger 4 to decelerate, and as a result, the direction in which the plunger 4 moves in the opposite direction (ie, the direction in which the plunger 4 returns to the initial position) changes. Note that an arrow indicated by a dashed line in FIG. 2B indicates the flow of magnetic flux.

Thereafter, as the plunger 4 returns to the initial position, a gap is formed between the front end of the plunger 4 (the end closer to the ejection member 9) and the yoke 3a as shown in FIG. During this time, a suction force is generated, so that the plunger 4 returns to the initial position while decelerating. In addition,
An arrow indicated by a dashed line in FIG. 2C indicates the flow of the magnetic flux.

Thereafter, the plunger 4 returns to the initial position by the suction force in the direction of the initial position and the return force of the return spring 10, and the stopper 13 attached to the output shaft 5 collides with the housing 20, and as shown in FIG. Plunger 4 as shown in)
Stops at the initial position.

(Embodiment 2) The basic configuration of the game ball launching apparatus of this embodiment is substantially the same as that of Embodiment 1, and a cylindrical guide pipe 8 is inserted through the coil bobbin 2 as shown in FIGS. The wide portions of the bearing holders 7 and 7 holding the bearings 6 and 6 are inserted into the holes 2 c, and the wide portions of the bearing holders 7 and 7 are respectively fitted to both ends of the guide pipe 8. The feature is that it supports. Here, the divided bodies 20a, 2 constituting the housing 20
0b is formed with a concave portion for positioning and holding the base ends of the bearing holders 7, 7 when they are combined with each other. Therefore, by combining the divided bodies 20a and 20b, the position of the housing 20 can be fixed to the guide pipe block including the bearings 6, 6 and the bearing holders 7, 7 and the guide pipe 8. The return spring 10 is held between the plunger 4 and the bearing holder 7 on the side closer to the embossing member 9.

For this reason, in the present embodiment, since the positioning accuracy (coaxiality) of the bearings 6 and 6 is determined only by the component accuracy of the bearing holders 7 and 7 and the guide pipe 8, it can be managed with high accuracy. Axis accuracy can be easily obtained. In short, since the high coaxiality of the two bearings 6, 6 is obtained, malfunctions such as twisting of the output shaft 5 due to the deviation of the coaxiality of the two bearings 6, 6 are eliminated, and the flying distance of the play ball is stabilized. In the present embodiment, the coaxiality of the bearings 6 and 6 can be increased with a small number of parts and a simple structure, so that the cost of parts is low and the torsion of the output shaft 5 is reduced. improves. In addition,
The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. Further, the basic operation is the same as that of the first embodiment, and the description is omitted.

Further, regarding the coaxiality of the plunger block itself composed of the plunger 4 and the output shaft 5, the two positions of the single output shaft 5 are supported by the two bearings 6, 6, so that the output shaft 5 As long as straightness is achieved, very high precision can be obtained at low cost. Therefore, in this embodiment, since the basic coaxial accuracy is high, the clearance between the inner diameters of the bearings 6 and 6 and the outer diameter of the output shaft 5 can be reduced, and the play of the output shaft 5 can be reduced. In addition, uneven wear of the bearing 6 is less likely to occur, so that stable solenoid characteristics can be obtained and the service life can be extended.

The material of the bearing holder 7 may be resin or metal as long as it is a non-magnetic material which does not affect the magnetic path. In the present embodiment, the bearing 6 and the bearing holder 7 are formed separately from each other, and the bearing 6 is press-fitted into the bearing holder 7. However, by using a material suitable for the bearing 6 as the bearing holder 7, The holder 7 may be integrated with the bearing 6.

The guide pipe 8 may be made of a non-magnetic, inexpensive drawing material such as brass, which can easily provide coaxial accuracy. The material of the guide pipe 8 is not limited to brass, but may be any non-magnetic material that can be easily processed.

(Embodiment 3) The basic configuration of the game ball launching apparatus of this embodiment is substantially the same as that of Embodiment 1, and as shown in FIG. 11, yokes 3a and 3b and a coil bobbin around which the coil 1 is wound. 2 is characterized in that the yoke block can move in a direction parallel to the axial direction of the output shaft 5 inside the housing main body 27 of the housing 20. Here, the yoke 3a has a U-shape formed by sheet metal bending, and the yokes 3a and 3b are joined together by caulking or the like by combining a flat yoke 3b.

A clearance is provided between the inner diameter of the through hole 2 c (see FIG. 12) of the coil bobbin 2 and the outer diameter of the guide pipe 8 so that the coil bobbin 2 can move on the outer peripheral surface of the guide pipe 8. It is. Therefore,
The coil bobbin 2 is movable on the outer peripheral surface of the guide pipe 8 integrally with the yokes 3a and 3b. That is, the yoke block is movable on the outer peripheral surface of the guide pipe 8. Here, if the material of the coil bobbin 2 is a resin having good slidability, sliding wear with the guide pipe 8 is reduced, and the life can be extended.

Further, in the present embodiment, the buffer members 16 made of an elastic body such as a cylindrical rubber are provided at both ends of the guide pipe 8 so that the yoke block does not collide with the inner surface of the housing 20 in the moving direction. 13). Here, the cushioning member 16 is
Is inserted together with the guide pipe 8 into a hole formed in the projecting portion 25, and one end in the axial direction projects into the internal space of the housing main body 27 of the housing 20. Therefore, the movement range of the yoke block is restricted by the cushioning members 16, 16, and it is possible to prevent the yoke block from directly colliding against the inner surface of the housing body 27.

In the present embodiment, since rubber having a cylindrical shape is used as the cushioning member 16, the amount of deformation of the cushioning member 16 can be increased, and the rubber hardness becomes more unstable as the physical properties become unstable. The displacement of the yoke block can be sufficiently obtained without making the yoke block extremely small.

When rubber is used as the cushioning member 16, it has stable physical properties from low hardness to high hardness, such as silicon rubber, and has elasticity and hardness capable of giving the yoke block an appropriate displacement. Any material can be used.
The cushioning member 16 is not limited to rubber, but may be a spring made of a metal coil spring or the like.

Further, by making the inner diameters of the buffer members 16, 16 slightly larger than the outer diameter of the guide pipe 8, the inner peripheral surfaces of the buffer members 16, 16 are smoothly adhered to the outer peripheral surface of the guide pipe 8. Because it can be transformed,
As a result, the yoke block moves stably.

Next, the operation of the game ball launching apparatus of this embodiment will be described.

When the coil 1 is not energized, the plunger 4 is at a predetermined initial position shown in FIG. 14D by the spring force of the return spring 10, and the cushioning member 16 is not deformed. When a predetermined exciting current is applied to the coil 1, a magnetic flux is generated between the yoke 3 and the plunger 4, and the plunger 4
Is attracted to the yoke 3a and moves to the left in FIG. 14 (accelerates) against the spring force of the return spring 10 as shown in FIG. At this time, the yoke block
Although a reaction force is generated in the direction opposite to the direction in which the plunger 4 moves, the yoke block moves in the direction opposite to the direction in which the plunger 4 moves, and the buffer member 16 is deformed and movement is restricted by the buffer member 16. The reaction force to the yoke block is absorbed, and the vibration and impact transmitted to the housing 20 and the game board are reduced.

At a position near the end of the acceleration operation, the striking member 9 collides with a game ball previously set at a predetermined position on the game board, and the game ball is fired. FIG.
An arrow indicated by a one-dot chain line in (a) indicates the flow of magnetic flux.

Thereafter, as shown in FIG. 14 (b), when the rear end of the plunger 4 (the end remote from the ejection member 9) passes through the insertion hole of the yoke 3b, the rear end of the plunger 4 and the yoke 3 A gap is formed between the plunger 4 and the plunger 4, and the plunger 4 is decelerated by the suction force. As a result, the direction in which the plunger 4 moves in the opposite direction (that is, the direction in which the plunger 4 returns to the initial position) changes. At the time of this deceleration, the above-described suction force is generated in the yoke block as a reaction force to the plunger 4 and is pulled by the plunger 4, so that the plunger 4
Is applied, and the yoke block moves and the movement is regulated by the elastic deformation of the cushioning member 16 on the side close to the embossing member 9. It can ease the transmission to the game board. The arrow indicated by the dashed line in FIG. 14B indicates the flow of the magnetic flux.

While the plunger 4 is reversed and returns to the initial position, a gap is formed between the front end of the plunger 4 (the end closer to the ejection member 9) and the yoke 3a as shown in FIG. And during that time a suction force is generated,
The plunger 4 returns to the initial position while decelerating. The arrow indicated by the dashed line in FIG. 14C indicates the flow of the magnetic flux.

After that, the plunger 4 returns to the initial position by the inertia toward the initial position and the return force of the return spring 10.
The stopper 13 attached to the output shaft 5 collides with the bearing holder 7, and the plunger 4 stops at the initial position as shown in FIG.

The above operation is summarized as shown in FIG. Here, FIG. 15A shows a time change of the displacement of the plunger 4 with respect to the initial position, and FIG. 15B shows a time change of the displacement of the yoke block with respect to the initial position.

Since the point at which the striking member 9 collides with the play ball is at the time of acceleration of the plunger 4, if the yoke block moves due to the reaction during the acceleration of the plunger 4, the speed of the plunger 4 with respect to the play ball is reduced (punching). The collision speed of the member 9).
The flying distance of the play ball will be reduced.

On the other hand, when the plunger 4 is decelerated, since the launching member 9 hits the game ball and the game ball is fired, the movement of the yoke block is independent of the flight distance of the game ball. In addition, since the plunger 4 is decelerated and reversed by the suction force in the direction opposite to the traveling direction of the plunger 4, the reaction force applied to the yoke block is larger than that during acceleration.
It is necessary to largely displace the buffer member 16.

As described above, the hardness of each of the cushioning members 16, 16 is reduced by reducing the hardness of the cushioning member 16 on the side close to the embossing member 9 so that the yoke block is sufficiently displaced to absorb vibration and impact. It is desirable to increase the hardness of the cushioning member 16 on the side remote from the launching member 9 so as to reduce the displacement of the yoke block so as not to reduce the flight distance of the game ball.

Thus, in the game board using the game ball launching apparatus of the present embodiment, the vibration and impact sound transmitted from the yoke block to the game board can be reduced, and the player can enjoy a comfortable game for a long time. It is possible to do.

Further, unlike the conventional example 3, there is no need to provide the cushioning members 47 and 48 and the mounting frame 50 separately from the solenoid, and the shock can be absorbed only by the solenoid main body A, so that the number of parts and the assembly cost can be reduced. In addition, the accuracy of the mounting position of the game ball launching device with respect to the game board is improved, and the cause of the variation in the flying distance of the game ball can be reduced.

(Embodiment 4) The basic configuration of this embodiment is substantially the same as that of Embodiment 3, and as shown in FIGS. 16 to 18, a guide pipe 8, bearings 6, 6, bearing holders 7, 7
Is characterized in that the guide pipe block is made movable in a direction parallel to the axial direction of the output shaft 5.

In this embodiment, the narrow base end of each bearing holder 7, 7 is slidable with respect to the hole of the housing 20 through which the base end is inserted. Here, a clearance is provided between the outer diameter of the base end of each bearing holder 7 and 7 and the inner diameter of the hole of the housing 20 so that the bearing holders 7 and 7 can slide in the axial direction. The pipe block is movable.

In this embodiment, a cushioning member 16a made of an elastic material such as rubber is disposed between the housing 20 and each of the bearing holders 7, 7 in order to position the guide pipe block in the housing 20. It is. Here, the cushioning member 16a has a disk shape having an opening at the center, and is formed continuously and integrally with the cushioning member 16 described in the third embodiment.

That is, the cushioning member 16 has both the function of positioning the yoke block and restricting the movement and the function of positioning the guide pipe block and restricting the movement. Although there is no functional problem even if the cushioning member 16 and the cushioning material 16a are separated from each other, in the present embodiment, since the cushioning member 16 and the cushioning material 16a are formed continuously and integrally, when formed separately, Compared with this, the number of parts can be reduced, which improves the assemblability and leads to cost reduction.

The shape and hardness of the cushioning material 16a are determined by the impact of the stopper pipe 13 on the return of the plunger 4 to the initial position when the guide pipe block receives harmful vibration to the play board and collision noise. What is necessary is just to set so that the guide pipe block can be displaced as necessary to reduce the occurrence. The cushioning member 16a may be any member that can effectively move the guide pipe block, and may be, for example, a coil spring.

Next, the operation of the game ball launching apparatus of this embodiment will be described.

In the state where the coil 1 is not energized, the plunger 4 is at a predetermined initial position shown in FIG. 19D by the spring force of the return spring 10, and when a predetermined exciting current is applied to the coil 1, the yoke 3 A magnetic flux is generated between the plunger 4 and the plunger 4, and the plunger 4 is attracted to the yoke 3a.
As shown in FIG.
9 to the left (accelerate). At this time,
A reaction force is generated in the yoke block in a direction opposite to the direction in which the plunger 4 moves. Since the movement is restricted, the reaction force to the yoke block is absorbed, and the vibration and impact transmitted to the housing 20 and the play board are reduced.

At a position near the end of the acceleration operation, the striking member 9 collides with a game ball previously set at a predetermined position on the game board, and the game ball is fired. Note that FIG.
An arrow indicated by a one-dot chain line in (a) indicates the flow of magnetic flux.

Thereafter, as shown in FIG. 19 (b), when the rear end of the plunger 4 (the end remote from the ejection member 9) passes through the insertion hole of the yoke 3b, the rear end of the plunger 4 and the yoke 3 A gap is formed between the plunger 4 and the plunger 4, and the plunger 4 is decelerated by the suction force. As a result, the direction in which the plunger 4 moves in the opposite direction (that is, the direction in which the plunger 4 returns to the initial position) changes. At the time of this deceleration, suction force acts between the yoke block and the rear end of the plunger 4, and the yoke block is pulled by the plunger 4, so that the plunger 4
Is applied to the yoke block, and the yoke block moves and the movement is restricted by the elastic deformation of the buffer member 16 on the side closer to the striking member 9, so that the impact transmitted to the yoke block is applied to the housing 20 and the game. The transmission to the board can be reduced. The arrow indicated by the dashed line in FIG. 19B indicates the flow of the magnetic flux.

While the plunger 4 is reversed and returns to the initial position, a gap is formed between the front end of the plunger 4 (the end closer to the ejection member 9) and the yoke 3a as shown in FIG. And during that time a suction force is generated,
The plunger 4 returns to the initial position while decelerating. The arrow indicated by the dashed line in FIG. 19C indicates the flow of the magnetic flux.

Thereafter, the plunger 4 returns to the initial position by the inertia toward the initial position and the return force of the return spring 10, and
The stopper 13 attached to the output shaft 5 collides with the bearing holder 7. Then, due to the impact applied to the bearing holder 7, the guide pipe block is displaced to the right in FIG. 19D as shown in FIG. 19D, and the guide pipe block is displaced and the right cushioning member 16a in FIG. Is compressed and deformed, so that the impact accompanying the movement of the plunger 4 can be suppressed from being transmitted to the game board. Thereafter, the plunger 4 stops at the initial position.

The above operation is summarized as shown in FIG. Here, FIG. 20A shows a time change of the displacement of the plunger 4 with respect to the initial position, FIG. 20B shows a time change of the displacement of the yoke block with respect to the initial position, and FIG.
0 (c) indicates a time change of the displacement of the guide pipe block with respect to the initial position.

(Embodiment 5) The basic configuration of this embodiment is substantially the same as that of Embodiment 1, and as shown in FIG. 21, the outer shape of the stopper 13 is circular, and a rotation stopper made of an elastic body is provided separately from the stopper 13. The only difference is that the member 13b 'is pressed into the output shaft 5. In this embodiment, the shape of the rotation stop member 13b 'is the same as that of the stopper 13 in the first embodiment, and the rotation stop member 13b' slides on the inner surface of the guide groove 24a of the guide portion 24 of the housing 20. By doing so, the rotation of the output shaft 5 and the plunger 4 is regulated.

(Embodiment 6) The basic configuration of this embodiment is substantially the same as that of Embodiment 4, and as shown in FIGS. 22 to 24, it is tubular and has a coil 1 wound thereon and flanges at both ends. 2
a yoke 3a that accommodates the coil bobbin 2, the yoke 3a that covers the opening surface of the yoke 3a, the yoke 3b that is combined with the yoke 3a, and the guide pipe 8 that is inserted into the through hole 2c of the coil bobbin 2. A plunger 4 inserted into the guide pipe 8 and reciprocally moved linearly between two prescribed positions; and a predetermined position of the game board near one of the two positions in cooperation with the plunger 4 in response to the excitation of the coil 1. An output shaft 5 configured to fire a game ball, a return spring 10 including a coil spring configured to return the plunger 4 to an initial position where the output shaft 5 is the other of the two positions, and an output shaft. 5, two bearings 6 which are inserted at both ends to slidably support the output shaft 5
a, a housing 6 for accommodating the solenoid main body A and mounting it in accordance with the shape of the mounting portion of the game board.
The same components as those in the fourth embodiment are denoted by the same reference numerals, and a description thereof will be partially omitted.

The guide pipe 8 is inserted into the through hole 2c of the coil bobbin 2, and the wide portions 67a and 67b of the bearings 6a and 6b are fitted at both ends. Each bearing 6a,
6b, the narrow base portions 66a, 66b
Supported by Here, the housing 20
Of the bearings 6a, 6b when they are combined with each other.
A pair of recesses 28 and 29 for positioning and holding b are formed. Therefore, by combining the divided bodies 20a and 20b, the guide pipe block including the bearings 6a and 6b and the guide pipe 8 and the housing 20
And can be positioned. The housing 20
Are projecting portions 2 from both ends of the housing body 27.
5 are protruded, and bearings 6a and 6b are arranged near the center of the tip of each protruding portion 25.

The output shaft 5 penetrates the plunger 4 and is integrated with the plunger 4, and both ends are supported by the bearings 6a and 6b, respectively, and protrude from the housing 20. Here, the plunger 4 reciprocates linearly at a frequency of, for example, 100 times per minute by controlling the energization of the coil 1. Further, at one end of the output shaft 5, a driving member 9 made of an elastic material which collides with a game ball when the output shaft 5 moves is attached. Further, a disc-shaped plunger stopper 43 made of an elastic material such as rubber is attached to the output shaft 5 in order to prevent the plunger 4 from directly colliding with the bearing 6b. In the stopper 43 for the plunger, a hole 43a through which the output shaft 5 is inserted is formed at the center. Here, the plunger stopper 43 cooperates with the plunger 4.

The return spring 10 is held between the spring guide 18 fixed to the plunger 4 and the bearing 6a on the side closer to the driving member 9. Here, the plunger 4 is press-fitted into which the plunger press-fitting portion 18a provided on the spring guide 18 is press-fitted between one end side in the axial direction (the side close to the launching member 9) and the outer peripheral surface of the output shaft 5. Part 4b
(See FIG. 24), and the spring guide 18 is fixed by press-fitting the plunger press-fit portion 18a into the press-fit portion 4b.

Also in this embodiment, the coil bobbin 2 is integrated with the yokes 3a and 3b to form the guide pipe 8
Is movable on the outer peripheral surface. That is, the yoke block is movable on the outer peripheral surface of the guide pipe 8. Here, in the present embodiment, a cylindrical cushioning member 16 made of an elastic body such as rubber is provided so that the yoke block does not collide with the inner surface of the housing 20 in the moving direction.
A disk-shaped cushioning member 36 made of an elastic body having a hole through which the guide pipe 8 is inserted in the center portion is connected to the guide pipe 8.
It is exterior. The buffer member 16 is disposed so that one end in the axial direction protrudes into the internal space of the housing main body 27 of the housing 20, and the buffer member 36 is disposed so as to abut on the inner surface of the housing main body 27. Therefore, the moving range of the yoke block is limited to the cushioning members 16 and 3.
6, the yoke block can be prevented from directly colliding with the inner surface of the housing body 27 in the moving direction.

In this embodiment, the guide pipe block including the guide pipe 8 and the bearings 6a and 6b is movable in a direction parallel to the axial direction of the output shaft 5. In short, in the present embodiment, the narrow base ends 66a, 66b of the bearings 6a, 6b are slidable with respect to the holes of the housing 20 through which the base ends 66a, 66b are inserted. Further, in the present embodiment, for positioning the guide pipe block in the housing 20, a cushioning member 16a formed integrally with the cushioning member 16 is disposed between the housing 20 and the wide portion 67a of the bearing 6a. It is.

In this embodiment, a cylindrical weight 1 for adding mass to the guide pipe block is provided at one end of the guide pipe 8 on the side where the bearing 6b is fitted.
9 (see FIG. 25). The weight 19 is the protrusion 2
5 is stored. As the weight 19, a material having a large specific gravity such as a metal may be used.

A cylindrical cushioning member 46 (see FIG. 26) made of an elastic material such as rubber for regulating the moving range of the weight 19 is provided on the base end 66b of the bearing 6b. here,
The buffer member 46 is provided between the weight 19 and the inner surface of the housing 20 in the axial direction of the output shaft 5. A projecting piece 46a projecting inward is protruded from one end in the axial direction of the cushioning member 46, as shown in FIG. 26. On the other hand, a wide end is formed at a base end 66b of the bearing 6b. 67b
A groove 68b into which the protruding piece 46a fits is formed at a position close to. The groove 68b is formed on the outer peripheral surface of the base end portion 66b along the circumferential direction. Therefore, the cushioning member 46
By fitting the protruding piece 46a into the groove 68b of the bearing 6b, the guide pipe block can be sandwiched and supported with the buffer member 16 described above. At one end of the above-mentioned weight 19 in the axial direction, a built-in piece 19a (see FIG. 25) protruding inward from the inner peripheral surface is protrudingly provided. In the axial direction, it is sandwiched between the wide portion 67b of the bearing 6b and the protruding piece 46a of the cushioning member 46. Therefore, the projecting piece 46a of the cushioning member 46 is inserted into the groove 68b of the base end 66b of the bearing 6b in a state where the weight 19 is provided on the guide pipe 8 and the built-in piece 19a is in contact with the wide portion 67b of the bearing 6b. By fitting, the weight 19 is integrated with the guide pipe block.

Next, the operation of the game ball launching apparatus of the present embodiment will be described.

In the state where the coil 1 is not energized, the plunger 4 is at a predetermined initial position shown in FIG. 22B by the spring force of the return spring 10, and when a predetermined exciting current is applied to the coil 1, the yoke 3a A magnetic flux is generated between the plunger 4 and the plunger 4, and the plunger 4 is attracted to the yoke 3a.
As shown in FIG. 7 (a), it moves to the left in FIG. 27 (accelerates) against the spring force of the return spring 10. At this time, a reaction force is generated in the yoke block in a direction opposite to the direction in which the plunger 4 moves. Since the movement is restricted by the member 36, the reaction force to the yoke block is absorbed, and the vibration and impact transmitted to the housing 20 and the game board are reduced.

At a position near the end of the acceleration operation, the launching member 9 collides with a game ball previously set at a predetermined position on the game board, and the game ball is fired.

Thereafter, as shown in FIG. 27 (b), when the rear end of the plunger 4 (the end remote from the ejection member 9) passes through the insertion hole of the yoke 3b, the rear end of the plunger 4 and the yoke 3 A gap is formed between the plunger 4 and the plunger 4, and the plunger 4 is decelerated by the suction force. As a result, the direction in which the plunger 4 moves in the opposite direction (that is, the direction in which the plunger 4 returns to the initial position) changes. At the time of this deceleration, suction force acts between the yoke block and the rear end of the plunger 4, and the yoke block is pulled by the plunger 4, so that the plunger 4
Is applied to the yoke block, and the yoke block moves and the movement is restricted by the elastic deformation of the buffer member 16 on the side closer to the striking member 9, so that the impact transmitted to the yoke block is applied to the housing 20 and the game. The transmission to the board can be reduced.

While the plunger 4 is reversed and returns to the initial position, a gap is formed between the front end of the plunger 4 (the end closer to the ejection member 9) and the yoke 3a as shown in FIG. And during that time a suction force is generated,
The plunger 4 returns to the initial position while decelerating.

Thereafter, the plunger 4 returns to the initial position by the inertia in the direction of the initial position and the return force of the return spring 10.
Plunger stopper 43 cooperated with plunger 4
Collides with the bearing 6b. Then, due to the impact applied to the bearing 6b, the guide pipe block is displaced to the right in FIG. 27 integrally with the weight 19 as shown in FIG. Here, the plunger 4 moves integrally with the guide pipe block, or moves to the right side in the drawing at a lower speed than the guide pipe block after the collision. The guide pipe block and the weight 19 are connected to the cushioning member 46.
Is displaced by the deformation of the cushioning member 4.
Since the reaction force of No. 6 increases, when it is displaced to a certain position, it reverses. At this time, if the plunger 4 has been displaced integrally with the guide pipe block, the plunger 4 is also inverted. On the other hand, when the plunger 4 is displaced independently, the bearing 6b of the guide pipe block collides again with the stopper 43 for the plunger when the guide pipe block starts to be inverted.

After the guide pipe block is inverted, it returns to the initial position in FIG. On the other hand, after the guide pipe block returns to the initial position, the plunger 4 moves forward alone (to the left in FIG. 27) as it is,
This is the rebound.

In this embodiment, the operation is performed in the above-described manner. However, when the plunger stopper 43 collides with the guide pipe block, the guide pipe block is
By moving the cushion member 46 to the right and compressing the buffer member 46, it is possible to suppress the transmission of the vibration and impact accompanying the movement of the plunger 4 to the game board.

The above operations are summarized as shown in FIG. Here, FIG. 28 (a) shows the time change of the coil current, FIG. 28 (b) shows the time change of the displacement of the plunger block with respect to the initial position, and FIG. 28 (c) shows the displacement of the guide pipe block with respect to the initial position. Of FIG.

By the way, in order to suppress the transmission of vibration and impact to the play board due to the collision between the plunger 4 and the guide pipe block, the hardness of the cushioning member 46 should be as small as possible. However, as the hardness of the buffer member 46 is reduced, the guide pipe block is
The plunger 4 is largely rebounded by the collision of the (plunger stopper 43), and the plunger 4 is largely rebounded by the reaction.

As an example, under the condition that the mass of the plunger block is 25 gf, the mass of the guide pipe block is 10 gf, and the hardness of the buffer member 46 is 30 °, the mass of the weight 19 is variously changed, and the amount of rebound of the plunger block is measured. The results obtained are shown in FIG. Here, the horizontal axis of FIG. 29 shows the total mass of the guide pipe block and the weight,
The vertical axis indicates the rebound amount of the plunger block. From FIG. 29, the relationship between the total mass of the guide pipe block and the weight 19, which is the collision object, and the mass of the plunger block, which is the collision object, is expressed as [mass of the plunger block] ≦ [the total of the guide pipe block and the weight. mass]
, That is, by increasing the mass of the weight 19, the rebound of the plunger 4 can be made smaller. On the other hand, in order to reduce the weight of the entire apparatus, it is better that the mass of the weight 19 is small.
The mass of the weight 19 was 15 gf.

The optimum value of the mass relationship depends on conditions such as the mass of the plunger block, the speed at which the plunger block collides with the guide pipe block, and the hardness of the cushioning member 46, and may be appropriately determined according to the conditions to be implemented. .

In this embodiment, the weight 19 is formed as a separate component from the guide pipe block, and is provided on the weight 19 between the projecting piece 46a of the buffer member 46 and the wide portion 67b of the bearing 6b. Although it is integrated by sandwiching the insert piece 19a, a structure in which the mass of the guide pipe block itself is increased by using a material having a large specific gravity such as a metal as the material of the bearing 6b may be used. That is, the bearing 6b may have the function of the weight 19. It is desirable that the weight 19 and the guide pipe block be integrated, but a structure that is not integrated may be used.

In this embodiment, the bearings 6a and 6b are supported by the housing 20, respectively, and the guide pipe block including the bearings 6a and 6b and the guide pipe 8 is used as the output shaft 5
A weight 19 is provided that is movable with respect to the housing 20 in a direction parallel to the direction of movement of the guide pipe block and cooperates with the guide pipe block in the housing 20. Since the buffer member 46 made of an elastic body for regulating is provided, the guide pipe block is made movable, so that vibration and impact sound transmitted from the guide pipe block to the play board through the housing 20 can be reduced. It is possible to provide a player with a comfortable game for a long time. Further, by providing the weight 19 cooperating with the guide pipe block, even if the hardness of the cushioning member 46 is reduced, the rebound of the plunger block composed of the plunger 4 and the output shaft 5 or the collision of the plunger 4 causes the guide pipe block to move. Displacement can be suppressed, and by using a low-hardness material as the buffer member 46, vibration transmitted from the guide pipe block through the housing 20 to the play board,
Impact noise can be further reduced.

Further, since it is not necessary for the housing 20 to form a magnetic path, there are few restrictions on the shape and material, and if the housing 20 is formed of resin, molding becomes easy and a complicated mounting structure is supported. And cost reduction and weight reduction can be achieved. in short,
Compared to the case where the yoke 3a is provided with a mounting structure to the game board as in the conventional examples 1, 2, 4, 5, and 6, it is possible to cope with a more complicated mounting structure. Further, if the housing 20 is formed of a metal such as zinc, brass, or aluminum, the specific gravity is increased and the weight increases as compared with the case where the housing 20 is formed of a resin. Can be.

Further, since the housing 20 can be processed by resin integral molding or die casting, and the bearings 6 and 6 can be fixed by the housing 20, the conventional examples 1, 2, 4, 5, and 5 can be formed.
6, two bearings 6 are used in comparison with the case where the bearing 6 and the bearing holder 7 are fixed to the unstable yokes 3a, 3b.
Since the coaxiality of a and 6b can be easily obtained, the twist of the output shaft 5 can be reduced, the reciprocating linear movement can be stabilized, and the flying distance of the game ball can be stabilized.

Further, in the case of a game ball launching device for each user in which the characteristics required of the solenoid body A are the same and only the structure of the mounting portion of the game board is different, the structure of the solenoid body A is made common and only the housing 20 is provided. Since it is possible to respond by changing the shape, it is possible to reduce the cost.

(Embodiment 7) In Embodiment 6 described above, the shape of the buffer member 46 is formed in a cylindrical shape as shown in FIG. 30 (a), and the guide pipe is caused by the collision of the plunger stopper 43 with the bearing 6b. When the block is displaced, the buffer member 46 is compressed and deformed. However, when the displacement of the guide pipe block is increased, the intermediate portion may be deformed into an extremely bent shape as shown in FIG. In the middle part of the buffer member 46 bent in this way, the outer peripheral surface is elongated and the inner peripheral surface is in a compressed state. By the way, in the sixth embodiment, an elastic body such as rubber is used as the cushioning member 46. However, although the rubber hardly causes a problem in elongation, when compressed while being bent, friction is generated. Wear when repeated. Therefore, when the cushioning member 46 has an extremely bent middle portion as shown in FIG. 30B, the wear progresses on the inner peripheral surface side of the middle portion of the cushioning member 46, and the wear portion is used as a trigger. It is also conceivable that a crack K is generated and the buffer member 46 is broken at a stretch, or a malfunction as a solenoid for firing a game ball occurs.

The basic structure of the present embodiment is substantially the same as that of the sixth embodiment. As shown in FIG. It is characterized in that a gentle bump-like projection 46b is provided. The other configuration is the same as that of the sixth embodiment, and the illustration and description are omitted.

In the present embodiment, since the protrusion 46b is formed in the middle of the cushioning member 46 in advance, it is bent at three places of the protrusion 46b and the portions on both sides when the cushioning member 46 is compressed and deformed. As a result, even if the displacement amount of the guide pipe block is the same as that in the case of FIG. 30B, the guide pipe block bends more smoothly as shown in FIG. In short, in the present embodiment, the buffer member 46 does not bend intensively, and local wear hardly occurs.

The basic operation of this embodiment is the same as that of the sixth embodiment.
However, when the cushioning member 46 is deformed during operation, the reaction force of the cushioning member 46 increases, the inertia force of the guide pipe block decreases, and the reaction force of the cushioning member 46 and the guide pipe The guide pipe block is displaced until the inertia force of the block becomes equal. Thereafter, the moving direction of the guide pipe block is reversed to the original direction and returns to the initial position.

In this embodiment, however, the cushioning member 46 is used.
By suppressing the local wear at the time of compressive deformation at low cost, it is possible to extend the service life, and further, it is possible to suppress the local wear at the time of compressive deformation of the cushioning member 46, Since the amount of compressive deformation of the buffer member 46 can be increased as compared with the case without the protrusion 46b, the amount of displacement of the guide pipe block can be increased,
Vibration and impact sound transmitted from the guide pipe block through the housing 20 to the play board can be further reduced.

By the way, in the example shown in FIG. 31A, the protruding portion 46b has a partially protruding shape.
As shown in FIG. 2, a projecting portion 46b may be formed such that the thickness gradually decreases from the center toward both ends in the axial direction.

The protrusion 46b may be provided on the inner peripheral surface side of the buffer member 46, or may be provided on both the outer peripheral surface and the inner peripheral surface. Here, the shape of the protruding portion 46b, the material, hardness, dimensions, and the like of the cushioning member 46 may be appropriately set according to conditions such as the speed and mass of the plunger 4, the life required of the solenoid, and environmental conditions.

In other words, by providing a gentle protrusion 46b on at least one of the outer peripheral surface and the inner peripheral surface at a position where the buffer member 46 bends during compression deformation, local wear during compression deformation of the buffer member 46 is provided. Can be suppressed at low cost, the life can be extended, and local abrasion during compression deformation of the cushioning member 46 can be suppressed. As a result, the amount of compressive deformation of the buffer member 46 can be increased, and the amount of displacement of the guide pipe block can be increased, so that the vibration and impact sound transmitted from the guide pipe block through the housing 20 to the play board are further reduced. You can do it.

(Embodiment 8) By the way, in the game ball launching device of the configuration of the embodiment 6 or 7, when the output shaft 5 rotates while continuously playing game balls, it is attached to the tip of the output shaft 5. Since the contact state between the striking member 9 and the playing ball gradually changes, and the dispersion of the flying distance of the playing ball may occur, the plunger block in the reciprocating linearly moving solenoid applies a rotational force during operation. It is desirable that the output shaft 5 does not work, but in reality, a rotational force may be generated on the output shaft 5 due to the fact that the plunger 4 is not located on the virtual center, a positional shift when the play ball and the launching member 9 collide, or the like.

The basic structure of the present embodiment is substantially the same as that of the sixth embodiment, and is shown in FIG. 35 or FIG. As shown in FIG. 33, such a protrusion 10d is provided, and as shown in FIG. A V-shaped rotation preventing groove 69a is provided radially, and as shown in FIG. 34, the protrusion 10d enters the contact surface 18c of the spring guide 18 with the end turn of the return spring 10, and the return spring 10
Rotation preventing groove 18 having a V-shaped cross section enough to prevent rotation of
It is characterized in that d is provided radially. Here, the protruding portion 10d in FIG. 35 is a burr when cutting the wire constituting the return spring 10, and the protruding portion 10d in FIG. 36 is formed by bending the end of the wire. The other configuration is the same as that of the sixth or seventh embodiment, so that illustration and description are omitted.

Since the initial load is applied to the return spring 10 at the time of assembling, the projecting portion 1 of the end turn of the return spring 10 is provided.
0d is pressed against the contact surface of the bearing 6a.

Therefore, in the present embodiment, when a rotational force is applied to the output shaft 5, the press-fitted portion 4 b of the plunger 4 is pressed.
The spring guide 18 into which the plunger press-fitting portion 18a is press-fitted rotates. Then, one protrusion 10d of the return spring 10 enters the rotation preventing groove 18d while pressing against the contact surface 18c of the spring guide 18. And
The return spring 10 rotates, and the other protrusion 1 of the return spring 10
0d similarly enters the rotation preventing groove 69a provided on the contact surface 65a of the bearing 6a.

For example, FIGS. 35 (a) and 36 (a)
Shows a state in which the protruding portion 10d of the return spring 10 has entered the rotation preventing groove 69a of the bearing 6a. In this state, for example, as shown in FIGS. 35 (b) and 36 (b), when a rotational force in the direction of arrow F1 is applied to the end turns of the return spring 10, the protrusion 10d prevents rotation. The rotation of the return spring 10 is restricted by the resistance when trying to escape from the state of entering the groove 69a. Conversely, FIG. 35 (c), FIG.
As shown in FIG. 6 (c), an arrow F
When the rotational force in the direction 2 is applied, the protrusion 10d hits the slope of the rotation preventing groove 69a, and the return spring 10
Rotation is regulated. Accordingly, as long as the end turn of the return spring 10 does not dance due to resonance or the like during the operation of the plunger 4, the protrusion 10d of the return spring 10
Does not get over the rotation preventing groove 69a and rotate.

Note that when the solenoid is not operating,
When the output shaft 5 is rotated by applying a large force by hand, the protrusion 1
Since 0d gets over the rotation preventing groove 69a, the output shaft 5 rotates. However, if the solenoid does not rotate when the solenoid is operating, there is no effect on the dispersion of the launch distance, so there is no problem. No.

In the present embodiment, the end portions of the end turn portions at both ends of the return spring 10 composed of the coil spring are provided with the protruding portions 10d, 10d protruding in the direction of the winding axis, and the bearing 6a and the spring guide 18, respectively. Since the rotation preventing grooves 69a and 19d are provided radially on the contact surfaces 65a and 18c of the return spring 10 with the end turns so that the protrusions 10d can enter and prevent rotation of the return spring 10. The groove 4a is formed in the plunger 4 so that the plunger 4
As in the case of preventing the rotation of the output shaft 5, the cross-sectional area of the magnetic path does not decrease, and the speed of the plunger 4 does not decrease due to sliding friction. Of the plunger 4 is prevented, and there is no wearable part unlike the case of forming the groove 4a in the plunger 4 to prevent the plunger 4 from rotating.
The service life can be extended. Further, the protrusion 10d provided on the return spring 10 may use the burr at the time of cutting the wire rod as it is, or may be formed by bending the end, and furthermore, each of the bearing 6a and the spring guide 18 When the bearing 6a and the spring guide 18 are molded parts, the rotation preventing grooves 69a and 18d do not require special processing, and can prevent the rotation of the return spring 10 at low cost.

In this embodiment, the rotation preventing groove 69 is used.
Although the cross-sectional shapes of a and 18d are V-shaped, they are not limited to the V-shape, and may be, for example, rectangular cross-sectional shapes. Further, the size of the burrs and the bending as the protruding portion 10d may be designed so that the return spring 10 does not rotate due to the rotational force generated when the solenoid operates. Further, it is necessary to set the set load of the return spring 10 so as not to be too light. That is, it is necessary to set the load so that the end winding portion does not rise due to the vibration caused by the operation of the plunger 4 and the plunger 4 does not rotate during the continuous operation of the solenoid.

(Embodiment 9) The basic configuration of this embodiment is substantially the same as that of Embodiment 6, and as shown in FIG. 39, the end portions of the end turns at both ends of the return spring 10 composed of a coil spring are provided in the radial direction. 37, a projecting portion 10d is provided on the outer peripheral surface of a portion of the bearing 6a projecting beyond the contact surface 65a with the end turn portion of the return spring 10 as shown in FIGS. Return spring 10
An anti-rotation groove 69a is provided along the circumferential direction so as to prevent the rotation of the return spring 10. The anti-rotation groove 69a protrudes from the contact surface 18c of the spring guide 18 with the end turn of the return spring 10 as shown in FIG. The protrusion 10
It is characterized in that a rotation preventing groove 18d is provided along the circumferential direction so as to prevent rotation of the return spring 10 when d enters.

Thus, in this embodiment, the end portions of the end turns at both ends of the return spring 10 composed of a coil spring are provided with projecting portions 10d, 10d projecting inward in the radial direction, and the bearing 6a and the spring guide 18 are provided. The rotation preventing grooves 69 a, which have protrusions 10 d, 10, which can prevent the rotation of the return spring 10, on the outer peripheral surfaces of the portions of the respective return springs 10 that protrude beyond the contact surfaces 65 a, 18 c with the end turn portions.
Because 18d is provided along the circumferential direction,
Unlike the prior art example, the groove 4a is formed in the plunger 4 to prevent rotation of the plunger 4, so that the magnetic path cross-sectional area does not decrease and the speed of the plunger 4 does not decrease due to sliding friction. It is possible to regulate the rotation of the output shaft 5 at low cost without affecting the flight distance of the ball, and in addition, a part that is worn as in the case where the groove 4a is formed in the plunger 4 to prevent the rotation of the plunger 4 is eliminated. Since there is no occurrence, the life can be extended. Also, the return spring 1
The projections 10d and 10d provided at 0 may use the burr at the time of cutting the wire as it is, or may be formed by bending the end portion.
Rotation preventing groove 69 provided in each spring guide 18
If the bearing 6a and the spring guide 18 are molded parts, no special processing is required, and rotation of the return spring 10 can be prevented at low cost.

Incidentally, in this embodiment, the plunger 4
Even if a rotational force is applied to the rotation preventing grooves 69a, 18d, the protrusions 10d, 10d that have entered the rotation preventing grooves 69a, 18d are
The hooking on 8d causes resistance, and rotation is regulated.
Also, when a strong rotational force such as turning by hand is applied, the protruding portion 10d comes off the rotation prevention grooves 69a and 18d in which it was inserted, but when the rotation force decreases, the nearby rotation prevention groove 69 is closed.
a, 18d, and rotation is restricted at that location.

The return spring 10 according to the eighth and ninth embodiments is used.
It is not necessary to insert the protruding portion 10d into a specific groove, hole, or the like.

[0140]

According to the first aspect of the present invention, there is provided a plunger which reciprocates linearly between two prescribed positions, a yoke block comprising a coil and a yoke for respectively moving the plunger to each of the above positions in response to excitation of the coil. And an output shaft that cooperates with the plunger to fire a game ball set in advance at a predetermined position on the game board in the vicinity of one of the two positions, and accommodates the solenoid body. In the case of a game ball launcher for each user who has the same characteristics required for the solenoid body and only differs in the structure of the game board mounting part because it has a housing that fits in accordance with the shape of the game board mounting part In addition, the structure of the solenoid body can be made common and can be dealt with by changing only the housing, which has the effect of reducing costs. In addition, since the housing does not need to form a magnetic path, there are few restrictions on the shape and material, and if the housing is formed of resin, it is possible to cope with a complicated mounting structure and to reduce the cost and weight. Can be achieved. Also, if the housing is made of a metal such as zinc, brass, or aluminum, the specific gravity increases and the weight increases compared to the case of resin,
The impact transmitted from the solenoid body to the play board can be reduced.

According to a second aspect of the present invention, there is provided a coil bobbin having a cylindrical shape and wound with coils and having flanges at both ends, a yoke for accommodating the coil bobbin, The plunger moves linearly back and forth between the plunger, and cooperates with the plunger in response to the excitation of the coil.
An output shaft for firing a game ball preset at a predetermined position on the game board near one of the positions, and a return for returning the plunger to an initial position where the output shaft is the other of the two positions. It has a solenoid body consisting of a spring and two bearings through which both ends of the output shaft are respectively inserted to slidably support the output shaft, and accommodates the solenoid body and fits the shape of the mounting portion of the game board. Since it has a housing for mounting, the characteristics required for the solenoid body are the same, and only the structure of the mounting part of the game board is different for each user. It is possible to cope with the change, and there is an effect that the cost can be reduced. In addition, since the housing does not need to form a magnetic path, there are few restrictions on the shape and material, and if the housing is formed of resin, it is possible to cope with a complicated mounting structure and to reduce the cost and weight. Can be achieved. The housing is made of zinc, brass,
When formed of a metal such as aluminum, the specific gravity is large and the weight is increased as compared with the case of resin, so that the impact transmitted from the solenoid body to the play board can be reduced. Further, since the housing is provided, it is not necessary to process the yoke according to the shape of the mounting portion of the game board as in the conventional example, so that the cost required for processing the yoke and the assembly cost can be reduced.

According to a third aspect of the present invention, in accordance with the second aspect of the present invention, there is provided a cylindrical guide pipe which is inserted through the through hole of the coil bobbin and into which the plunger is inserted, and each bearing is provided at both ends of the guide pipe. Therefore, the coaxiality of the two bearings is determined only by the accuracy of the parts of the bearing holder and the guide pipe, and a high coaxiality of the two bearings can be obtained. There is an effect that the flying distance of the game ball can be stabilized at a low cost.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the yoke block including the coil and the yoke is movable with respect to the housing in a direction parallel to the moving direction of the output shaft, and the moving direction of the yoke block is changed. Is provided on both sides of the yoke block, the yoke block is movable and the movement is restricted by the buffer member. Therefore, the yoke is moved in accordance with the reciprocating linear movement of the plunger. The vibration and impact sound generated in the game board and transmitted to the game board can be reduced at a low cost, and it is possible to provide a player with a comfortable game for a long time.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, a narrow base end portion of each bearing is supported by the housing, and a guide pipe block including the bearing and the guide pipe is moved in the direction of movement of the output shaft. Is movable relative to the housing in a direction parallel to the guide pipe, and between the wide portion of each bearing and the housing, there is provided a cushioning member made of an elastic body for restricting the movement of the guide pipe block. By making the block movable, it is possible to reduce the vibration and impact sound transmitted from the guide pipe block to the amusement board through the housing and to provide the player with comfortable play for a long time. There is.

According to a sixth aspect of the present invention, in the first to fifth aspects of the present invention, there is provided a launching member attached to one end of the output shaft and colliding with a game ball, and between the launching member and the housing. A stopper made of an elastic body that is attached to the output shaft and regulates movement of the launching member.
It has a rotation stopper which is parallel to the direction of movement of the output shaft and is slidable with respect to the guide groove formed in the housing, and prevents rotation of the output shaft. The effect that the output shaft rotation can be regulated at low cost without reducing the magnetic path cross-sectional area as in the case of forming and preventing the rotation of the plunger without affecting the flying distance of the play ball. There is.

According to a seventh aspect of the present invention, in the fourth aspect of the present invention, each bearing is supported by the housing, and the guide pipe block including the bearing and the guide pipe is mounted on the housing in a direction parallel to the moving direction of the output shaft. And a weight cooperating with the guide pipe block in the housing is provided on the other side of the two positions, and restricts movement of the weight between the weight and the housing in the moving direction. Since the cushioning member made of an elastic body is provided, by making the guide pipe block movable, vibration and impact sound transmitted from the guide pipe block through the housing to the play board can be reduced. It is possible to provide comfortable play over time, and furthermore, a weight that cooperates with the guide pipe block is provided. Thereby, even if the hardness of the buffer member is reduced, the rebound of the plunger block including the plunger and the output shaft and the displacement of the guide pipe block due to the collision of the plunger can be suppressed, and the buffer member having a small hardness is used. Thereby, there is an effect that the vibration and the impact sound transmitted to the game board from the guide pipe block through the case can be further reduced.

According to an eighth aspect of the present invention, in the invention of the seventh aspect, the cushioning member made of an elastic body for restricting movement of the weight is provided.
A smooth projection is provided on at least one of the outer peripheral surface and the inner peripheral surface at a portion which is cylindrical and is disposed so that the output shaft and the axial direction coincide with each other, and is bent at the time of compressive deformation of the cushioning member. Therefore, by providing a gentle protrusion on at least one of the outer peripheral surface and the inner peripheral surface in a portion that bends during compression deformation of the cushioning member, local wear during compression deformation of the cushioning member is reduced. The cost can be reduced, the life can be prolonged, and the local abrasion during compression deformation of the buffer can be suppressed. Since the amount of compressive deformation can be increased and the amount of displacement of the guide pipe block can be increased, the vibration and impact sound transmitted from the guide pipe block through the housing to the play board can be further reduced. There is an effect that theft can be.

According to the ninth aspect of the present invention, there is provided a coil bobbin having a cylindrical shape and wound with coils and having flanges at both ends, a yoke for accommodating the coil bobbin, The plunger moves linearly back and forth between the plunger, and cooperates with the plunger in response to the excitation of the coil.
An output shaft for firing a game ball preset at a predetermined position on the game board near one of the positions, and a return for returning the plunger to an initial position where the output shaft is the other of the two positions. It has a solenoid body consisting of a spring and two bearings through which both ends of the output shaft are respectively inserted to slidably support the output shaft, and accommodates the solenoid body and fits the shape of the mounting portion of the game board. The return spring comprises a coil spring, and a protrusion protruding in the direction of the winding shaft is provided at an end of the end winding portion at both ends, and the bearing on one of the two positions in the direction of the winding shaft is provided. And the spring guide fixed to the plunger, and the one side bearing and the spring guide are respectively provided on the contact surfaces of the return spring with the end turns. Since part anti-rotation groove enough to prevent rotation of the return spring enters is provided radially, by providing the solenoid body and the housing,
In the case of an amusement ball launcher for each user in which the characteristics required of the solenoid body are the same and only the structure of the mounting portion of the game board is different, the structure of the solenoid body can be made common and can be dealt with by changing only the housing. This has the effect of enabling cost reduction. In addition, since the housing does not need to form a magnetic path, there are few restrictions on the shape and material, and if the housing is formed of resin, it is possible to cope with a complicated mounting structure and to reduce the cost and weight. Can be achieved. Further, if the housing is formed of a metal such as zinc, brass, or aluminum, the specific gravity is large and the weight is increased as compared with the case of resin, so that the impact transmitted from the solenoid body to the play board can be reduced. Further, since the housing is provided, it is not necessary to process the yoke according to the shape of the mounting portion of the game board as in the conventional example, so that the cost required for processing the yoke and the assembly cost can be reduced. Further, at the ends of the end turns at both ends of the return spring composed of a coil spring, projections projecting in the direction of the winding axis are provided, and the one-side bearing and the spring guide come into contact with the end turns of the return spring. In addition, since a rotation preventing groove is provided radially enough to prevent the rotation of the return spring into which the protruding portion enters, the groove is formed in the plunger as in the conventional example to prevent the rotation of the plunger. The cross-sectional area of the magnetic path does not decrease, and the speed of the plunger does not decrease due to sliding friction, and the rotation of the output shaft can be regulated at low cost without affecting the flight distance of the play ball. There is no part that wears away as in the case of preventing the rotation of the plunger by forming a groove in the groove, so that the life can be extended. Further, the protrusion provided on the return spring may be formed by using the burr at the time of cutting as it is, or may be formed by bending the end portion, and provided on each of the bearing and the spring guide on one side. If the bearing and the spring guide are formed parts, the rotation preventing groove does not require special processing, and has an effect that rotation of the return spring can be prevented at low cost.

According to a tenth aspect of the present invention, there is provided a coil bobbin having a cylindrical shape and wound with coils and having flanges at both ends, a yoke for accommodating the coil bobbin, A plunger linearly moving back and forth between the plunger and an output shaft that cooperates with the plunger in response to the excitation of the coil and fires a game ball previously set at a predetermined position on the game board near one of the two positions. A return spring for returning the plunger to an initial position in which the output shaft is the other of the two positions, and two bearings through which both ends of the output shaft are inserted to slidably support the output shaft. It has a solenoid body, and has a housing for accommodating the solenoid body and mounting according to the shape of the mounting part of the game board. The return spring is a coil spring. Protrusions projecting inward in the radial direction are provided at the ends of the end winding portions at both ends, and are held between the bearing on one side of the two positions and the spring guide fixed to the plunger in the winding axis direction. The one-sided bearing and the spring guide each have an anti-rotation groove on the outer peripheral surface of a portion protruding from a contact surface with the end turn portion of the return spring so that the protruding portion can enter and prevent rotation of the return spring. Are provided along the circumferential direction and are provided with the above-mentioned solenoid body and housing, so that the characteristics required for the solenoid body are the same and only the structure of the mounting portion of the game board is different for each user. In the case of a game ball launching device, the structure of the solenoid body can be made common and can be dealt with by changing only the housing, so that the cost can be reduced. In addition, since the housing does not need to form a magnetic path, there are few restrictions on the shape and material, and if the housing is formed of resin, it is possible to cope with a complicated mounting structure and to reduce the cost and weight. Can be achieved. Further, if the housing is formed of a metal such as zinc, brass, or aluminum, the specific gravity is large and the weight is increased as compared with the case of resin, so that the impact transmitted from the solenoid body to the play board can be reduced. Further, since the housing is provided, it is not necessary to process the yoke according to the shape of the mounting portion of the game board as in the conventional example, so that the cost required for processing the yoke and the assembly cost can be reduced.
Further, at the ends of the end turns at both ends of the return spring composed of a coil spring, projections projecting inward in the radial direction are provided, and the one side bearing and the spring guide contact the end turns of the respective return springs. A rotation preventing groove is provided on the outer peripheral surface of a portion protruding from the surface along the circumferential direction so that the protruding portion can enter and prevent rotation of the return spring. As in the case where the grooves are formed to prevent the rotation of the plunger, the cross-sectional area of the magnetic path does not decrease, and the speed of the plunger does not decrease due to sliding friction. Since the rotation of the output shaft can be regulated at a low cost, and since there is no wear part as in the case of forming a groove in the plunger to prevent the rotation of the plunger,
The service life can be extended. Further, the protrusion provided on the return spring may be formed by using the burr at the time of cutting as it is, or may be formed by bending the end portion, and provided on each of the bearing and the spring guide on one side. If the bearing and the spring guide are formed parts, the rotation preventing groove does not require special processing, and has an effect that rotation of the return spring can be prevented at low cost.

[Brief description of the drawings]

1A and 1B show a first embodiment, wherein FIG. 1A is a side view, FIG. 1B is a cross-sectional view, and FIG. 1C is a bottom view.

FIG. 2 is an operation explanatory view of the above.

FIGS. 3A and 3B show a stopper used in the above, wherein FIG. 3A is a front view and FIG. 3B is a side sectional view.

FIG. 4 is a perspective view of a yoke used in the same.

FIG. 5 is an explanatory diagram of another configuration example of the yoke of the above.

FIG. 6 is an explanatory diagram of another configuration example of the yoke of the above.

7A and 7B show another configuration example of the above, and FIG.
(B) is a sectional view, and (c) is a bottom view.

8A and 8B show the second embodiment, in which FIG. 8A is a side view, FIG. 8B is a sectional view, and FIG. 8C is a bottom view.

FIG. 9 is a sectional view of a main part of the above.

FIG. 10 is a sectional view of a main part of the above.

11A and 11B show a third embodiment, in which FIG. 11A is a side view and FIG.
Is a sectional view, and (c) is a bottom view.

FIG. 12 is a sectional view of a main part of the above.

FIG. 13 is a sectional view of a main part of the above.

FIG. 14 is an operation explanatory view of the above.

FIG. 15 is an explanatory diagram of the operation of the above.

16A and 16B show a fourth embodiment, in which FIG. 16A is a side view, and FIG.
Is a sectional view, and (c) is a bottom view.

FIG. 17 is a sectional view of a main part of the above.

FIG. 18 is a sectional view of a main part of the above.

FIG. 19 is a diagram illustrating the operation of the above.

FIG. 20 is an explanatory diagram of the operation of the above.

21A and 21B show a fifth embodiment, in which FIG. 21A is a side view, and FIG.
Is a sectional view, and (c) is a bottom view.

22A and 22B show a sixth embodiment, in which FIG. 22A is a side view, and FIG.
Is a sectional view, and (c) is a bottom view.

FIG. 23 is an exploded perspective view of the same.

FIG. 24 is an exploded perspective view of a main part of the above.

25 (a) is a left side view, FIG. 25 (b) is a cross-sectional view, and FIG. 25 (c) is a right side view.

26 (a) is a left side view, FIG. 26 (b) is a sectional view, and FIG. 26 (c) is a right side view.

FIG. 27 is an explanatory diagram of the operation of the above.

FIG. 28 is an explanatory diagram of the operation of the above.

FIG. 29 is a characteristic explanatory diagram of the above.

FIGS. 30A and 30B show the cushioning member used in the first embodiment; FIG. 30A is a cross-sectional view before compression, and FIG.

FIG. 31 shows a cushioning member used in the seventh embodiment, and (a)
Is a cross-sectional view before compression, and (b) is a cross-sectional view during compression.

FIG. 32 shows another configuration example of the cushioning member of the above, and (a)
Is a side view, and (b) is a cross-sectional view.

33A and 33B show a bearing used in the eighth embodiment, where FIG. 33A is a left side view, FIG. 33B is a front view, and FIG. 33C is a right side view.

FIG. 34 shows a spring guide used in the above;
(A) is a left side view, (b) is a front view, (c) is a right side view.

FIG. 35 is an explanatory diagram of the operation of the above.

FIG. 36 is an operation explanatory diagram of another configuration example of the above.

37A and 37B show a bearing used in the ninth embodiment, where FIG. 37A is a left side view, FIG. 37B is a front view, and FIG. 37C is a right side view.

FIG. 38 shows a spring guide used in the above.
(A) is a left side view, (b) is a front view, (c) is a right side view.

39A and 39B show a return spring used in the above, wherein FIG. 39A is a left side view, FIG. 39B is a front view, and FIG. 39C is a right side view.

FIG. 40 is a schematic side view of a main part of the above.

FIG. 41 is an explanatory diagram of a play ball launching device of a linear solenoid type.

42 (a) is a front view, FIG. 42 (b) is a bottom view, FIG. 42 (c) is a side view, and FIG. 42 (d) is a sectional view.

FIG. 43 is an explanatory diagram of the above operation.

44 (a) is a side view, FIG. 44 (b) is a front view, FIG. 44 (c) is a bottom view, and FIG. 44 (d) is a sectional view.

FIG. 45 is an explanatory diagram of the operation of the above.

FIG. 46 is a front view showing an assembled state of a game ball launching device of Conventional Example 3;

FIG. 47 is an exploded perspective view of the same.

48A and 48B show Conventional Example 4, wherein FIG. 48A is a front view, FIG. 48B is a bottom view, and FIG. 48C is a side view.

FIGS. 49A and 49B show the same as above, wherein FIG. 49A is a cross-sectional view and FIG.

50A and 50B show a return spring used in the above, wherein FIG. 50A is a front view and FIG. 50B is a side view.

FIGS. 51A and 51B show Conventional Example 5, in which FIG. 51A is a side view, and FIG.

52 (a) and 52 (b) show essential parts of the above, and FIG. 52 (a) is a sectional view and FIG.
Is a side view.

53 shows Conventional Example 6, (a) is a cross-sectional view, and (b) is a side view.

54 (a) is a sectional view, and FIG.
Is a side view.

[Explanation of symbols]

 Reference Signs List 1 coil 2 coil bobbin 3a, 3b yoke 4 plunger 5 output shaft 6 bearing 10 return spring A solenoid body 20 housing 20a, 20b split body 22 fixing hole

Claims (10)

[Claims] 1. A plunger that linearly moves reciprocally between two prescribed positions, a yoke block including a coil and a yoke that moves the plunger to each of the positions in response to excitation of the coil, and cooperates with the plunger. An output shaft for emitting a game ball which is set in advance at a predetermined position of the game board in the vicinity of one of the above-mentioned two positions; and a solenoid body for accommodating the solenoid body and mounting the game board. A game ball launching device comprising a housing mounted in accordance with the shape of the game ball. 2. A coil bobbin having a cylindrical shape and wound with a coil and having flanges at both ends, a yoke for accommodating the coil bobbin, and a reciprocating linear movement inserted between two specified positions inserted into a through hole of the coil bobbin. A plunger, an output shaft that cooperates with the plunger in response to the excitation of the coil and fires a play ball preset at a predetermined position on the play board in the vicinity of one of the two positions, and A return spring for returning the plunger to an initial position which is the other of the two positions, and a solenoid body comprising two bearings through which both ends of the output shaft are respectively inserted to slidably support the output shaft. And a housing for accommodating the solenoid main body and mounting in accordance with the shape of the mounting portion of the game board. 3. A cylindrical guide pipe which is inserted into a through hole of the coil bobbin and into which the plunger is inserted,
3. The game ball launching device according to claim 2, wherein each bearing is provided at both ends of the guide pipe. 4. An elastic body which is movable with respect to the housing in a direction parallel to the direction of movement of the output shaft, the yoke block comprising a coil and a yoke, and which restricts movement of the yoke block on both sides in the direction of movement of the yoke block. 4. The game ball launching device according to claim 3, further comprising a cushioning member. 5. A narrow base end of each bearing is supported by a housing, and a guide pipe block including a bearing and a guide pipe is movable with respect to the housing in a direction parallel to a moving direction of an output shaft. 5. The game ball launching device according to claim 4, wherein a cushioning member made of an elastic body for restricting movement of the guide pipe block is provided between the wide portion of each bearing and the housing. 6. A launching member attached to one end of an output shaft and colliding with a game ball, and an elastic body attached to the output shaft between the launching member and the housing for restricting movement of the launching member. A stopper that is parallel to the moving direction of the output shaft, is slidable in a guide groove formed in the housing, and prevents rotation of the output shaft. The game ball launching device according to any one of claims 1 to 5, characterized in that: 7. Each of the bearings is supported by a housing, and a guide pipe block including a bearing and a guide pipe is movable with respect to the housing in a direction parallel to a moving direction of an output shaft. A weight that cooperates with the weight is provided on the other side of the two positions, and a cushioning member made of an elastic body that restricts the movement of the weight is provided between the weight and the housing in the movement direction. The game ball launching device according to claim 4, characterized in that: 8. A cushioning member made of an elastic body for restricting the movement of the weight is provided in a cylindrical shape so that an axial direction thereof coincides with an output shaft, and a portion which is bent when the cushioning member is compressed and deformed. The game ball launching device according to claim 7, wherein a gentle protrusion is provided on at least one of the outer peripheral surface and the inner peripheral surface. 9. A coil bobbin having a tubular shape and wound with a coil and having flanges at both ends, a yoke for accommodating the coil bobbin, and a reciprocating linear movement inserted between through-holes of the coil bobbin between two prescribed positions. A plunger, an output shaft that cooperates with the plunger in response to the excitation of the coil and fires a play ball preset at a predetermined position on the play board in the vicinity of one of the two positions, and A return spring for returning the plunger to an initial position which is the other of the two positions, and a solenoid body comprising two bearings through which both ends of the output shaft are respectively inserted to slidably support the output shaft. A housing for accommodating the solenoid body and mounting according to the shape of the mounting portion of the play board, the return spring comprises a coil spring,
Protrusions projecting in the direction of the winding shaft are provided at the ends of the end winding portions at both ends, and are held between the bearing on one side of the two positions and the spring guide fixed to the plunger in the direction of the winding shaft. The one-sided bearing and the spring guide are each provided with a rotation preventing groove radially provided on the contact surface of the return spring with the end turn portion so that the protrusion can enter and prevent rotation of the return spring. A game ball launching device. 10. A coil bobbin having a tubular shape and wound with a coil and having flanges at both ends, a yoke for accommodating the coil bobbin, and a specified two bobbin inserted into a through hole of the coil bobbin.
A plunger that reciprocates linearly between positions, and an output that cooperates with the plunger in response to the excitation of the coil and fires a game ball previously set at a predetermined position on the game board near one of the two positions. A shaft, a return spring for returning the plunger to an initial position where the output shaft is the other of the two positions, and two bearings through which both ends of the output shaft are respectively inserted to slidably support the output shaft. And a housing for accommodating the solenoid body and mounting according to the shape of the mounting portion of the play board. The return spring is made of a coil spring, and a radial direction is provided at the ends of the end turns at both ends. Is provided between the bearing on one side of the two positions and the spring guide fixed to the plunger in the winding axis direction. The one-sided bearing and the spring guide are respectively prevented from rotating to such an extent that the projecting portion enters the outer peripheral surface of a portion projecting beyond the contact surface of the return spring with the end turn portion to prevent rotation of the returning spring. A game ball launching device characterized in that grooves are provided at intervals along the circumferential direction.