JP4238249B2 - Pachinko ball launcher - Google Patents

Description

The present invention relates to a pachinko ball launcher, and more particularly to a pachinko ball launcher using a flat DC motor in which the axial length of a rotating body is reduced as much as possible.

Since the pachinko ball launcher is mounted in a space with a limited depth dimension, a flat DC motor in which the axial length of the rotating body is reduced as much as possible is used as the drive source. For example, the ball launcher of a pachinko machine disclosed by the applicant of the present application in Patent Document 1 includes a magnet and a coil to constitute a motor, and swings an arm to fire a pachinko ball. By making both the magnet and the coil flat, a compact ball launcher is constructed, which is suitable for a pachinko machine with limited depth dimensions. In Patent Document 1, the rotating shaft that holds the coil does not continuously rotate and repeats reciprocating rotation at a limited angle, but the operation principle is the same as that of a general DC motor.

In addition, the thin coreless motor disclosed in Patent Document 2 is applied to mobile communication devices such as mobile phones, and is particularly used for vibrating the device itself in a manner mode or the like. The thin coreless motor includes an eccentric rotor including a plurality of air-core armature coils and eccentric weights, a ring-shaped magnet in which N poles and S poles are alternately magnetized, a commutator (commutator), and a brush. Then, the eccentric rotor rotates in the field formed in the axial direction while switching the energizing direction of the coil, so that the center of gravity moves to vibrate the device.
JP 2005-224561 A JP 2004-112870 A

  By the way, although the ball launcher of patent document 1 is comparatively compactized, further thinner flattening is requested | required and the further flattening of the motor part comprised with a magnet and a coil is required. Further, in order to obtain a large output, it is necessary to support the essential part of the coil as a fan shape, and since it is not rotationally symmetric, the production is troublesome and the assembly is troublesome. On the other hand, the thin coreless motor of Patent Document 2 requires a plurality of non-circular air-core armature coils to be arranged and fixed outside the axis of the eccentric rotor, has a large number of components, is difficult to assemble, and has a commutator and brush. There was a concern of poor contact at the connecting part.

The present invention has been made in view of the above background, it is possible to further flattened than conventional, fewer parts, easy manufacture, the electrical connection portion of the highly reliable pachinko ball launch machine I will provide a.

Pachinko balls launch machine of the present invention includes a generally circular rotary body having a substantially elliptic coils coaxially conductor is formed by superimposed winding spread in a plane perpendicular to the rotation axis, the rotating body rotating the together with a housing for holding movably the, the magnetic field generating means for rise to a magnetic field in the axial direction with respect to the coil is disposed in the housing, wherein the rotary body has an axis portion for inserting the center of the coil The outer arcuate portion of the coil has an engagement hole that defines a rotatable angular range, the housing has a stopper member that enters the engagement hole, and the magnetic field generating means is on either or both sides of the coil in the axial direction. A flat DC motor consisting of at least two magnets arranged on one side via a gap and rotating and swinging within the limited angular range , and a pachinko ball that is provided on the outer periphery of the rotating body. The hit ball portion and the ha Characterized in that it comprises a mounting seat for mounting the housing provided Managing inside the pinball machine, a.

The coil extends in a substantially oval shape on a surface orthogonal to the rotation axis, is thin in the axial direction, and is formed flat. The longer the oval shape, the better. The reason is that, as will be described later, the current component from the rotational axis toward the radial direction increases, and the driving force can be induced efficiently. The coil can be formed, for example, by forming an elliptical shaped body having a predetermined axial thickness as a winding mold and winding a conductive wire several times in the axial direction on the outer periphery thereof in multiple layers in the radial direction. For example, a general copper wire coated with an insulator can be used as the conductive wire. The oval shape and the number of turns can be obtained by designing according to the desired output. A direct current power source is connected to both ends of the conducting wire directly or via a commutator. Moreover, a rotating body can be formed with a coil and a substantially circular shaped body, and the rotating body can be provided with an output means for utilizing a driving force.

The shaft center portion can be inserted through the center of the coil. The shaft center portion may be a rotating shaft that is integrally formed with the coil and the molded body and is pivotally supported by the housing. Alternatively, the fixed shaft may be formed integrally with the housing, and the rotating body may be held rotatably. In the manufacture of a coil having an axial center portion in the center, the conductor winding operation can be performed using the axial center portion, so that workability is good. Moreover, the engagement hole which prescribes | regulates the angle range which can rotate can be formed in the outer arcuate part by which the substantially oval coil is not arrange | positioned on a substantially circular molded object.

The housing holds the rotating body in a rotatable manner, has a magnetic field generating means disposed at a predetermined position, and further has a role of protecting the shaft support portion and the like of the rotating body from dust. In addition, the housing can be provided with a stopper member that enters the engagement hole of the molded body constituting the rotating body. For example, the housing can be formed by detachably connecting two metal or resin dish-shaped members facing each other.

  The magnetic field generating means generates an axial magnetic field in the coil. In the present invention, at least two magnets are provided on both sides of the coil in the axial direction or on either side with a gap. In order to set the generated magnetic field in the axial direction, it is preferable that the magnetic poles of the magnets face the axial direction of the coil. In order to apply a strong magnetic field to the coil, it is preferable to make the gap as small as the manufacturing error size allows.

Various configurations can be considered for the number of magnets used, the size, the arrangement, and the polarity of the magnetic poles, and are determined in consideration of the desired rotational displacement and driving force. Basically, when the current flowing through the coil and the magnetic field of each magnet are given, the induced electromagnetic forces are added to drive the rotating body in the same rotational direction. For example, in a configuration in which two magnets are arranged on one side of the coil, different magnetic poles are used for the part where the current flows in the major axis direction of the oval coil and the part where the current returns, i.e., one is the N pole and the other is the S pole. It is preferable to face the poles directly. As a result, the induced electromagnetic force is directed in the same rotational direction.
The hitting ball portion is a portion that is provided on the outer peripheral portion of the rotating body and plays a role of output means for extracting the driving force. The hitting ball portion can hit a pachinko ball by direct drive by rotational displacement. A mounting seat is a part which attaches a housing to the inside of a pachinko machine.

Next, the operation of the pachinko ball launcher of the present invention configured as described above will be described. When a current is passed through the coil from an external DC power source, an electromagnetic force is induced by the action of the magnetic field of each magnet. The direction of the electromagnetic force is a direction orthogonal to both the current and the magnetic field, as is apparent from Fleming's left-hand rule. Here, the current is regarded as a vector, and can be divided into a radial current from the rotation axis in the radial direction and a rotational current in the rotation direction of the rotating body. Then, an electromagnetic force in the axial rotation direction is induced by the action of the radial current and the axial magnetic field. The rotational current induces a radial electromagnetic force but does not contribute to rotational driving. Eventually, the rotational driving force is induced by the radial current component of the current flowing through the oval coil. And the sum total of the rotational driving force induced by the action | operation of the electric current of all the parts of a coil and all the magnets acts on a rotary body.

When the rotating body rotates by the rotational driving force, the relative positional relationship between the current and the magnetic field changes, and the magnitude of the rotational driving force changes. When the coil moves away from the magnet and is no longer affected by the magnetic field, the rotating body stops. Further, if the energizing current is reduced or cut off during the rotational motion, the rotational driving force is reduced and the rotational motion is interrupted. In addition, the stopper member on the housing side enters the engagement hole of the rotating body, and the angular range in which the rotation is possible is defined. Thus, by rotating and swinging in a certain angle range to the hitting ball part and adjusting the swing range, it can be used for launching pachinko balls.

The rotating body may have a spiral flexible cable at both ends of the conducting wire that keeps connection with a power source while being deformed following the rotational displacement. Since the hitting portion performs a rotational motion within a certain angle range, a flexible cable may be provided instead of the commutator and the energizing brush. The flexible cable is a spiral and elastic conductor, and can be wound up and pulled out freely like a mainspring spring following the rotational displacement of the rotating body, and the connection between the coil and the power source can be maintained. On the other hand, in the structure in which the conventional cable is slackened, there is a risk of strength reduction due to repeated stress and biting at the shaft support portion. Further, the contact structure using the energizing brush has a contact resistance, and there is a concern about contact failure due to use over time. With the connection using the flexible cable, these problems can be eliminated, and extremely high reliability can be ensured.

The magnetic field generating means includes four magnets arranged on a circumference around the rotation axis on one side of the coil and having different polarities, and the four magnets on the opposite side of the coil. And four other magnets that are arranged to face each other and have a different polarity from the facing magnets. A total of eight magnets can be arranged on both sides of the coil as the magnetic field generating means. The configuration of the two-sided arrangement slightly increases the axial length dimension compared to the one-sided arrangement, but the magnetic field generated by the two magnets facing each other is large and stable, so a pachinko ball that requires a large driving force is used. It is suitable for the use of a sheet machine .

The housing is configured such that two dish-shaped cover flanges having a bearing portion at the center of the inside face each other to form an internal space, and a part of the end surface is cut away in a circumferential direction, and the hitting ball portion It is preferable that an opening for inserting the cover flange is formed, and the two cover flanges are integrated using the stopper member . According to this aspect, a flat internal space can be easily formed, and an output can be directly taken out from the outer peripheral portion of the rotating body without a shaft. Therefore, the outer dimension in the axial length direction can be reduced to the limit to obtain a flat shape.

In the pachinko ball launcher of the present invention, the outer dimension in the axial direction of the motor is reduced to the limit using a substantially oval flat coil, and the output is taken out from the outer periphery of the rotating body. The merit as a flat shape is great. Further, since the coil is rotationally symmetric and has an axial center part in the center, the manufacture is easy. Further, since the driving force is induced by the current flowing in the major axis direction on both sides of the oval coil, only one coil is required, and the assembly is simple because the number of parts is small.

  In the aspect in which the flexible cable is connected to the DC power source at both ends of the conductor, there is no concern about the cable biting or the contact failure of the energizing brush, and the reliability of the electrical connection portion is extremely high.

The best mode for carrying out the present invention will be described with reference to FIGS . FIG. 1 is a view for explaining a flat DC motor for driving a pachinko ball launcher according to an embodiment of the present invention. FIG. 1 (a) is a front sectional view taken along a plane orthogonal to the rotational axis X. FIG. ) Is a cross-sectional view seen from the AA direction of the front cross-sectional view. (A) is equivalent to the figure seen from the BB direction of a cross-sectional view. The flat DC motor 1 according to the embodiment rotates and swings within a limited angle range, and includes a rotating body 3 having a coil 2, a housing 4, and eight magnets 51 to 58. ing.

As shown in FIG. 1B, the housing 4 is configured such that two dish-shaped cover flanges 41 and 42 face each other to form an internal space. The cover flanges 41 and 42 are integrated by being fastened to the rod-shaped stopper member 43 with screws 44 at two positions away from the rotation axis X. A concave shaft end receiving portion 45 is formed in the center of one of the cover flanges 41, and a bearing portion 46 is provided. A shaft hole 47 is formed in the center of the other cover flange 42, and a bearing portion 48 is provided on the inner side. Also, mounting seats 49 having mounting holes are provided at three locations around one cover flange 41 so that they can be fixed inside the pachinko machine .

The rotating body 3 is formed by integrating the coil 2 and the shaft body 31 with a molded body 33. FIG. 2 is a front view for explaining the rotating body 3 in detail, and the coil 2 is formed by winding a conducting wire in an oval and flat shape with a gap in the center. After the coil 2 is manufactured, a cylindrical shaft body 31 corresponding to the shaft center portion is disposed in the gap, and a molded body 33 is manufactured by resin molding. The molded body 33 enters the gap to integrate the coil 2 and the shaft body 31, and is also arranged outside the coil 2 to have a substantially circular outer shape. Engagement holes 34 that are long in the rotational direction are formed in two arcuate portions outside the coil 2 of the molded body 33. A shaft 32 extends in the direction of the rotation axis X at one end of the shaft body 31.

  As shown in FIGS. 1A and 1B, the rotating body 3 is rotatably held by the housing 4. That is, the other end of the shaft body 31 of the rotating body 3 is rotatably held by the bearing portion 46 of the shaft end receiving portion 45, and the shaft 32 inserted through the shaft hole 47 is rotatably held by the bearing portion 48. Yes. In addition, the stopper member 43 enters the engagement hole 34, and a rotatable angle range is defined.

  Eight magnets 51 to 58 are arranged four by four on both sides of the coil 2 in the axial direction. FIG. 3 is a front sectional view of the rotating body 3 removed from the CC direction in FIG. The four magnets 51 to 54 are fixed at a 90 ° pitch on the circumference on the ring-shaped back sheet 59, and the back sheet 59 is fastened together with the stopper member 43 and fixed to one cover flange 41. The four magnets 51 to 54 are magnetized in the axial direction, and the magnetic poles alternately different from N-S-N-S- are opposed to the coil 2. Similarly, the other four magnets 55 to 58 are also fixed to the other cover flange 42 by another back sheet 59. The magnetic poles of the other four magnets 55 to 58 are different from the magnets facing each other via the coil 2, that is, SNSN—, and the magnetic field is orthogonal to the coil 2. For example, the south pole of the magnet 55 is arranged so as to face the north pole of the magnet 51, and as shown in FIG. 1A, a magnetic field H from the back side to the front side is generated in this vicinity.

  Next, the operation of the flat DC motor 1 according to the embodiment configured as described above will be described. Now, as shown in FIG. 1A, consider a case where a current I1 in the direction of the arrow in FIG. Then, a clockwise driving force is induced by the action of the magnetic field H in the vicinity of the magnets 51 and 55 and the current I1 according to Fleming's left method rule. This effect is the same for the current I2 on the opposite side of the coil 2 by 180 °, and the clockwise driving force is doubled. As a result, the rotating body 3 is displaced clockwise. With the displacement, the coil 2 moves away from the magnets 51 and 55 and approaches the next magnets 52 and 56. Then, the rotational motion is continued by the driving force generated by the action of the current I3 and the magnets 52 and 56 in different portions of the coil, and the coil is displaced until the stopper member 43 comes into contact with the end of the engagement hole 34. Naturally, if the energization direction is reversed, the rotator 3 rotates counterclockwise.

Next, a pachinko ball launcher according to an embodiment of the present invention will be described with reference to FIG. FIG. 4 is a view for explaining a pachinko ball launcher 13 according to an embodiment having a hitting ball portion 8 as an output means on the outer peripheral portion of the rotating body 33 of FIG. 4A is an outline view of the pachinko ball launcher 13 , and FIG. 4B is a cross-sectional view of the outline view seen from the direction EE. As shown in FIG. 4B, the two dish-like cover flanges 41 and 42 facing each other are partly cut away in the circumferential direction so that an opening 82 is formed. Yes. The shaft on the rotating body 3 side is not attached, and instead, an arm-shaped hitting ball portion 8 is disposed on the substantially circular outer peripheral portion of the molded body 33. The hitting ball portion 8 is inserted through the opening 82 so as to be able to swing in the rotation direction and protrudes out of the housing 4, and a hammer head 81 is provided at the tip. Further, two stopper members 83 that define the rotational swing range of the hammer head 81 are disposed adjacent to the mounting seat 49.

On the other hand, the flexible connecting portion 9 is disposed outside the cover flange 42. FIG. 5 is a diagram for explaining the details of the flexible connecting portion 9. A pair of metal flexible cables 91 having a spiral shape and elasticity are accommodated in the connecting portion 9. One end of the flexible cable 91 is connected to the connection connector 92 and supplied with DC power, and the other end is connected to the conductor of the coil 2.

The pachinko ball launcher 13 according to the embodiment configured as described above is attached to the inside of the pachinko machine by a mounting seat 49, and the hammer head 81 is disposed in a firing rail (not shown). When a current is passed from the DC power source to the coil 2 via the flexible cable 91, the rotating body 3 rotates and swings to drive the hammer head 81, and can hit a pachinko ball in the firing rail. . Further, by making the current variable, it is possible to adjust the momentum of the pachinko ball launching. Here, the flexible cable 91 follows the rotational swing of the rotating body 3 and can freely absorb the displacement like a mainspring spring. Therefore, the generated stress is small and it is possible to provide a pachinko ball launcher 13 that is extremely reliable for frequent operations.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining the flat type DC motor which drives the pachinko ball launcher of the Example of this invention, (a) is front sectional drawing cut | disconnected by the surface orthogonal to a rotating shaft center, (b) is front sectional drawing. It is the cross-sectional view seen from the AA direction. In the Example of FIG. 1, it is a front view explaining a rotary body in detail. In the Example of FIG. 1, it is front sectional drawing which removed the rotary body from CC direction. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining the pachinko ball launcher of the Example of this invention, (a) is an external view, (b) is the cross-sectional view seen from the EE direction of the external view. In the Example of FIG. 4, it is a figure explaining the detail of a flexible connection part.

Explanation of symbols

13: Pachinko ball launcher 1: Flat DC motor 2: Coil 3: Rotating body
31: Shaft body 32: Shaft 33: Molded body
34: engagement hole 4: housing
41, 42: Cover flange 43: Stopper member
44: Screw 45: Shaft end receiving portion 46: Bearing portion
47: Shaft hole 48: Bearing part 49: Mounting seat 51-58: Magnet 59: Back seat 8: Hitting part
81: Hammer head 82: Opening 83: Stopper member 9: Flexible connection
91: Flexible cable 92: Connector X: Rotational axis H: Magnetic field I1, I2, I3: Current

Claims (4)

A substantially circular rotary body with coaxially conductor substantially elliptic coils formed by superimposed wound spreads in a plane perpendicular to the rotation axis, and a housing for holding the rotating body rotatably, said housing And a magnetic field generating means for generating a magnetic field in the axial direction with respect to the coil, and the rotating body has an axial center portion inserted through the center of the coil and is rotatable to an arcuate portion outside the coil The housing has an engagement hole for defining an angle range, the housing has a stopper member that enters the engagement hole, and the magnetic field generating means is disposed on both sides or one side of the coil in the axial direction with a gap. A flat DC motor comprising at least two magnets and rotating and swinging within the limited angular range ;
A hitting ball portion that is provided on the outer peripheral portion of the rotating body and launches a pachinko ball;
A mounting seat provided in the housing and attaching the housing to the interior of the pachinko machine;
A pachinko ball launcher characterized by comprising:   2. The pachinko ball according to claim 1, wherein the rotating body has a spiral flexible cable at both ends of the lead wire that is freely wound up and pulled out following the rotational displacement and maintains a connection with a power source while being deformed. Launcher.   The magnetic field generating means includes four magnets arranged on a circumference around the rotation axis on one side of the coil and having different polarities, and the four magnets on the opposite side of the coil. The pachinko ball launcher according to claim 1, further comprising four magnets arranged to face each other and having different polarities from the facing magnets. The housing is configured such that two dish-shaped cover flanges having a bearing portion at the center of the inside face each other to form an internal space, and a part of the end surface is cut away in a circumferential direction, and the hitting ball portion The pachinko ball launcher according to any one of claims 1 to 3, wherein an opening for inserting the cover flange is formed, and the two cover flanges are integrated using the stopper member .

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