JP2005328613A - Motor for game machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve a magnetic force and increase torque by providing an air core coil provided via a magnetic plate in a casing with a magnetic substance. <P>SOLUTION: This motor for a game machine has such a constitution that torque is increased by providing the casing (1) which is equipped rotatably with a rotating shaft (11) having a rotor (3) with the air-core coil (3) via the magnetic plate (2), and providing a magnetic substance (30) in the air-gap (31) of the air-core coil (3). <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a game machine motor, and more particularly, to a novel improvement for increasing a magnetic flux density and obtaining a torque by providing a magnetic body in an air core coil provided in a casing.

2. Description of the Related Art Conventionally, this type of game machine motor that has been used is only manufactured in-house, so that no patent document is disclosed, but the configuration shown in FIG. 2 has been adopted.
That is, what is denoted by reference numeral 1 in FIG. 2 is a plate-shaped casing, and a plurality of air-core coils 3 are circularly arranged at predetermined angular intervals on the inner surface of the casing 1 via the magnetic plate 2. Yes.

  A cylindrical body 7 having a large inner diameter portion 5 and a smaller inner diameter portion 6 having a smaller diameter than this is attached to the attachment hole 4 formed in the casing 1. Is provided with a large-diameter first bearing portion 8, a small-diameter second bearing portion 9 is provided in the small-inner-diameter portion 6, and a bearing 10 is formed by the first and second bearing portions 8, 9. Has been.

A rotary shaft 11 is rotatably provided on the bearing 10, and a rotor 13 having a plurality of magnets 12 is provided on the rotary shaft 11.
A cylindrical extension portion 14 formed at the center of the rotor 13 and integral with the rotor 13 is located between the inner periphery of the first bearing portion 8 and the outer periphery of the rotary shaft 11. Is held rotatably, and the rear end 11a of the rotary shaft 11 is directly fitted to the second bearing portion 9.

  A helical gear 15, which is a gear, is provided at the tip 11 b of the rotary shaft 11. The helical gear 15 meshes with a driven gear 16 of a game machine (not shown), and the driven gear is driven by driving the rotary shaft 11. 16 is configured to be rotated.

  In the above-described configuration, by sequentially supplying a drive signal to each air core coil 3, the rotating shaft 11 and the rotor 13 rotate due to the repulsion between the magnetic force generated from the air core coil 3 and the magnetic force of the magnet 12.

Since conventional game machine motors are configured as described above, the following problems exist.
In other words, the air-core coil provided on the magnetic plate of the fixed casing has a gap at the center, and the magnetic force against the opposing magnet is not sufficient. In an industry that requires downsizing rather than upsizing, such as a game machine, for example, a motor unit for a self-propelled car of a horse racing game, there is a strong demand for downsizing, and a smaller and larger torque. The motor of the characteristic was anxious.

  A game machine motor according to the present invention includes a rotary shaft provided rotatably on a casing via a bearing, a rotor provided with a magnet provided on the rotary shaft, and a magnetic plate provided on an inner surface of the casing. A game machine motor comprising an air-core coil facing a magnet and rotating the rotor by exciting the air-core coil, wherein a magnetic body is provided in a gap formed at the center of the air-core coil Further, a helical gear is provided at the tip of the rotating shaft, and has a cylindrical body provided in the casing, and a pair of cylindrical bodies provided inside the cylindrical body. The first and second bearing portions form the bearing, and has a cylindrical extension formed integrally with the rotor and extending along the outer periphery of the rotating shaft. The inner side of the first bearing portion is configured to the tubular extension is located.

Since the game machine motor according to the present invention is configured as described above, the following effects can be obtained.
In other words, since each air core coil provided on the magnetic plate of the casing is provided with a magnetic body, the magnetic force generated when the air core coil is energized can be improved, and torque can be increased without changing the shape of the motor. Can be obtained.

  An object of the present invention is to provide a magnetic body at the center of an air-core coil provided on a magnetic plate of a casing, thereby improving the magnetic force during excitation and obtaining a torque increase.

Hereinafter, preferred embodiments of a motor for a game machine according to the present invention will be described with reference to the drawings.
In addition, the same code | symbol is attached | subjected and demonstrated to a part the same as that of a prior art example, or an equivalent part.
In FIG. 1, a reference numeral 1 denotes a plate-like casing, and a plurality of air-core coils 3 are arranged in a circular shape at predetermined angular intervals on the inner surface of the casing 1 via a magnetic plate 2.

  A cylindrical body 7 having a large inner diameter portion 5 and a smaller inner diameter portion 6 having a smaller diameter than this is attached to the attachment hole 4 formed in the casing 1. Is provided with a first bearing portion 8 having a large diameter, a second bearing portion 9 having a small diameter is provided on the small inner diameter portion 6, and a bearing 10 is formed by the first and second bearing portions 8, 9. Has been.

A rotary shaft 11 is rotatably provided on the bearing 10, and a rotor 13 having a plurality of magnets 12 is provided on the rotary shaft 11.
A cylindrical extension portion 14 formed at the center of the rotor 13 and integral with the rotor 13 is located between the inner periphery of the first bearing portion 8 and the outer periphery of the rotary shaft 11. Is held rotatably, and the rear end 11a of the rotary shaft 11 is directly fitted to the second bearing portion 9.

  In the air gap 31 formed at the center of each air core coil 3, a magnetic body 30 is fixed to the magnetic plate 2 with an adhesive so as to face each magnet 12, and a drive signal is supplied to the air core coil 3. Is excited so that the amount of magnetic force generated from the air-core coil 3 can be significantly improved as compared with the conventional case.

  A helical gear 15, which is a gear, is provided at the tip 11 b of the rotary shaft 11. The helical gear 15 meshes with a driven gear 16 of a game machine (not shown), and the driven gear is driven by driving the rotary shaft 11. 16 is configured to be rotated.

  In the above-described configuration, the rotation shaft 11 and the rotor 13 are rotated by the repulsion of the magnetic force generated from the air core coil 3 and the magnetic force of the magnet 12 by sequentially supplying drive signals to each air core coil 3 having the magnetic body 30.

  The present invention is not limited to a game motor, and can be applied to a general flat motor.

It is sectional drawing which shows the motor for game machines by this invention. It is sectional drawing which shows a conventional structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Casing 2 Magnetic plate 3 Air core coil 7 Cylindrical body 8, 9 1st, 2nd bearing part 10 Bearing 11 Rotating shaft 11a Rear end 11b Front end 12 Magnet 13 Rotor 14 Cylindrical extension part 15 Hasuba gear 30 Magnetic body 31 Gap

Claims (4)

A rotating shaft (11) provided rotatably on the casing (1) via a bearing (10), a rotor (13) provided on the rotating shaft (11) and having a magnet (12), and the casing (1 ) And an air core coil (3) that is provided via a magnetic plate (2) and faces the magnet (12), and rotates the rotor (13) by exciting the air core coil (3). In such a game machine motor,
A game machine motor comprising a magnetic body (30) provided in a gap (31) formed in the center of the air-core coil (3).   The game machine motor according to claim 1, wherein a helical gear (15) is provided at a tip (11b) of the rotating shaft (11).   The bearing (10) is formed by a pair of first and second bearing portions having a cylindrical body (7) provided in the casing (1) and provided inside the cylindrical body (7). The motor for game machines according to claim 1 or 2, wherein the motor is used.   A cylindrical extension (14) formed integrally with the rotor (13) and extending along the outer periphery of the rotating shaft (11) is provided, and the cylinder is disposed inside the first bearing portion (8). The game machine motor according to any one of claims 1 to 3, wherein the extended portion (14) is located.

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