JP3001945U - Fixing bracket for motor shaft of throttle machine and throttle machine using the same - Google Patents

Abstract

(57) [Abstract] [Purpose] It is possible to enhance the fixing strength between the motor shaft and the reel, reduce the load of torque to the step motor, and improve the durability of the machine. In a throttle machine 1 provided with a reel 3 which is rotationally driven by a step motor 13 and is stopped individually, the step motor 13 has a screw hole 30 opened at a tip surface and a cutout formed by cutting out a part of an outer peripheral surface. A motor shaft 13A having a cutout surface 31. The reel 3 has a rotation stopping surface 3 that receives the cutout surface 31 at the rotation center thereof.
3 is formed and covers the outer peripheral surface, and is provided with a cylindrical boss portion 29 fitted to the tip portion 13A1 of the motor shaft 13A.
A hole 41 through which a screw fitting K to be screwed into the screw hole 30 passes at the tip of a metal base cylinder 40 into which the boss 29 is fitted.
The reel 3 and the motor shaft 13A are connected to each other by using the fixing fitting 14 integrally provided with the lid 41 having A.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a motor shaft fixing metal fitting of a throttle machine that can improve the durability of the machine by increasing the fixing strength between the motor shaft and the reel and reducing the torque load to the step motor, and a throttle machine using the same. .

[0002]

[Prior art]

 Throttle machines, so-called throttle machines and pachi-slot machines, use multiple reels with a large number of symbols on the circumferential surface, rotate them, and the player presses a stop button, one on each reel. This is a game machine in which each reel is stopped, and when a combination of patterns coincides with a predetermined winning combination, a predetermined number of coins corresponding to the winning combination are paid out. Therefore, in the throttle machine, in order to prevent the player from freely combining the patterns, the reel is rotated at a high speed, which makes it difficult for the player to specify the pattern.

On the other hand, the reel needs to be formed as light as possible in order to reduce the load on the motor due to the repetition of the high speed rotation and the sudden stop, and in particular, the rotation angle of the reel is reduced by using a step motor. The above weight reduction is more important in the case of controlling the detection of a combination of patterns and the establishment of a winning combination. For this reason, as shown in FIG. 6, the reel A is formed of a polymer resin material such as plastic, which is in the form of a skeleton integrally provided with the cylindrical body a2 around the side plate a1, and is connected to the motor shaft M. It is fixed using the metal fitting B.

The metal fitting B is conventionally provided with a tubular body portion b2 into which the motor shaft M is inserted, at the center of a collar piece b1 screwed to the side plate a1 of the reel. The screw metal fitting C1 to be screwed into contact with the outer peripheral surface of the motor shaft M presses the motor shaft M and the rail A so as to be integrally rotatable.

[0005]

[Problems to be solved by the device]

 However, in the conventional case, the joint fitting B has a large weight such that it needs to be formed relatively thick in order to form the screw hole for the screw fitting C to be screwed into and the screw fitting for mounting the side plate a 1 is large. Since the screw fittings C1 for mounting the motor shaft M are separated from the center of rotation, the moment of inertia is large. As a result, the load on the step motor is increased, shortening the motor life and stopping the motor. It induces the displacement of the picture, etc., and reduces the control performance of the control device.

The present invention uses a fixture for a motor shaft of a throttle machine, which can reduce the load torque on the motor while maintaining high attachment strength between the motor shaft and the reel, and which can solve the above problems. The purpose is to provide a throttle machine.

[0007]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention comprises a plurality of polymeric resin materials that are driven to rotate by a step motor supported by a frame and individually stop, and have a display portion having a pattern printed on the outer peripheral surface. In a slot machine including a reel having a cylindrical base body, the step motor includes a motor shaft having a screw hole opened at a front end surface and a cutout surface formed by cutting a part of an outer peripheral surface, and The reel is provided with a cylindrical boss portion, which is formed with a rotation stopping surface for receiving the cutout surface at the center of rotation of the base body, covers the outer peripheral surface, and is fitted to the tip end portion of the motor shaft, At the tip of the metal base cylinder into which the boss is inserted, a lid having a hole through which a screw fitting screwed into the screw hole passes is integrally provided, and is attached to the motor shaft by the screw fitting. thing Is a fixing machine for a motor shaft of a throttle machine and a throttle machine using the fixing machine.

[0008]

[Action]

 The fixing bracket can be attached to the motor shaft by inserting the reel boss that fits the motor shaft and screwing the screw fitting that passes through the lid into the screw hole on the tip surface of the motor shaft. . In this way, when mounting, the number of screw fittings used is greatly reduced, and since one screw fitting to be used is located approximately on the rotation center of the motor shaft, the moment of inertia can be greatly reduced. . Furthermore, since the screw holes are eliminated from the fixing metal fittings, the thickness of the fittings can be reduced, the moment of inertia can be further reduced, the motor life can be extended, and the control performance of the control device can be improved.

Further, since the fixing metal fitting is integrally fixed to the motor shaft by the screw metal fitting, a part of the shock load due to the reel or the like that acts when the motor is started and stopped is inserted between the fixing metal fitting and the boss portion. The fixing bracket can be supported by force, and thus the load applied between the motor shaft and the boss can be reduced. In addition, by covering the outer circumference of the boss with the fixing bracket, the strength in the twisting direction at the boss can be greatly improved, and damage to the reel can be prevented even in the configuration of the present invention in which the boss is made of a polymer resin material. It is possible to maintain high mounting strength between the reel and the motor shaft.

[0010]

【Example】

 An embodiment of the fixing device of the first invention will be described below with reference to the drawings together with a slot machine which is an embodiment of the second invention. In the drawing, a throttle machine 1 has a reel unit 5 in which a plurality of reels 3 each having a pattern P printed on its outer peripheral surface are incorporated inside a base box 2, and the front upper part of the base box 2 is provided with A display window 6 for displaying the picture P on the reel 3 is provided. A coin insertion slot 7 and a payout slot 9 are formed on the front surface of the base box 2, and a stop button 10 for stopping the rotation of the reel 3 by the player and a reel 3 are provided below each display window 6. A start button 11 for starting the rotation of is provided.

The reel unit 5, as shown in FIG. 2 which is a perspective view of the rear side of the reel unit 5, is mounted on, for example, the side plates 2 A and 2 A of the base box 2, and a frame 12 supported by the frame 12. The step motor 13 and the reel 3 mounted on the motor shaft 13A using a fixing tool 14 are provided.

The frame 12 has a rectangular frame assembly 16 mounted on a base plate 15 bridged between the side plates 2 A and 2 A. The frame assembly 16 includes an upper plate 17 and a lower plate 18. The plurality of motor mounting plates 19 are connected to each other. The rear plates of the upper and lower plates 17 and 18 are connected to each other by a reinforcing plate 24 to enhance the frame rigidity of the frame assembly 16, and the reel 3 is driven by a step motor 13 on the upper plate 17, for example. A control device Q for suppressing the stop and detecting the combination of the patterns P is attached.

As shown in FIG. 3, each motor mounting plate 19 supports the step motor 13 horizontally with each motor shaft 13A parallel to and aligned with the display window 6. The shaft 13A and the reel 3 are integrally attached using a fixing bracket 14.

The motor shaft 13A is formed with a screw hole 30 for screwing in a screw fitting K which is open at the tip end surface and extends along the shaft core, and a part of the outer peripheral surface thereof is cut out. The notch surface 31 is provided on the tip portion 13A1.

Further, the reel 3 includes a cylindrical base 3A made of a polymer resin material, which is concentric with the motor shaft 13A.

In this example, the base body 3A has a frame-shaped cylindrical portion 25 in which three ring pieces 20, 21 and 22 which are parallel to each other are connected by a joint piece 23 ... The reel sheet 3B is attached to the outer periphery of the portion 25, that is, around the joint pieces 23 ...

The reel sheet 3B has a tape-like shape in which a number of patterns P corresponding to the step angle of the step motor 13 are printed on a sheet of a high molecular weight resin such as a polyethylene sheet or a vinyl sheet, and the base 3A is used. The display portion 4 on the outer peripheral surface of the reel 3 is formed by being attached to the outer periphery in a ring shape.

Further, on the base body 3A, a disc-shaped side plate piece 27 is formed at an inner end of a spoke piece 26 extending in a cross shape from the ring piece 21 in the center thereof, and the side plate piece 27 is formed. A cylindrical boss portion 29 projects at the center of 27, that is, the position of the center of rotation of the base body 3A.

As shown in FIGS. 4 and 5, the boss portion 29 has a fitting hole 32 that fits into the tip portion 13A1 of the motor shaft 13A, and the fitting hole 32 is the cutout portion of the motor shaft 13A. By having the anti-rotation surface 33 that receives the surface 31 and the inner peripheral surface 35 that covers the outer peripheral surface of the motor shaft 13A, the end surface 13A1 is fitted with substantially no play in the rotational direction. In this example, the boss portion 29 is formed with an end surface portion 36 which receives the tip end surface of the motor shaft 13A and is provided with an insertion hole 36A through which the screw fitting K is inserted.

Further, since the boss portion 29 has a substantially uniform thickness, the outer contour of the boss portion 29 is substantially similar to that of the motor shaft 13. Therefore, in this example, the boss portion 29 faces the anti-rotation surface 33. A locking surface 37 that is substantially parallel to the rotation stopping surface 33 is formed on the side.

The fixing member 14 has a metal cap shape in which a lid portion 41 that closes the fitting hole 40A is integrally provided at the tip of a base cylindrical portion 40 having a fitting hole 40A into which the boss portion 29 is fitted. None, for example, it is formed as a rigid body by drawing a sheet metal or the like. In this example, the fitting hole 40A has an engagement surface 45 along the locking surface 37 and an inner peripheral surface 46 along the outer peripheral surface of the boss portion 29, so that the boss portion 29 is substantially rotated in the rotational direction. Remove the play and insert.

In this example, the outer surface of the boss portion 29 and the inner surface of the fitting hole 40A of the fixing member 14 have a tapered shape that extends toward the tip as shown in FIG. The diameter of 40A is substantially smaller than that of the boss portion 29 so that the boss portion 29 is press-fitted. The fitting hole 40A may have the same diameter as the boss portion 29 or a substantially large diameter. In such a case, it is preferable to bond the boss portion 29 with an adhesive or the like.

Further, the lid 41 is provided with a hole 41 A through which the screw fitting K passes. Therefore, when the screw fitting K passing through the hole 41A and the insertion hole 36A is screwed into the screw hole 30 of the motor shaft 13, the fixing fitting 14 is fixed to the front end surface of the motor shaft 13. Therefore, the fixing metal fitting 14 bears the shocking load at the time of starting and stopping by the fitting force and the joining force with the boss portion 29, and the load on the reel 3 is reduced. In particular, in this example, since the fixing member 14 has the engaging surface 45, the load bearing capacity is enhanced.

By covering the outer periphery of the boss portion 29, the fixing metal fitting 14 can improve the strength in the twisting direction, and in combination with the bearing capacity, prevent damage to the reel 3 and prevent the reel 3 and the motor shaft 13A from being damaged. The mounting strength with can be greatly increased.

In order to prevent the screw fitting K from loosening due to starting and stopping of the motor, for example, a toothed washer 47 is interposed between the fixing fitting 14 and the screw fitting K may be fixed with an adhesive. preferable. The washers 47 and the adhesive may be used alone or in combination. Further, in order to further prevent loosening of the screw fitting K, it is preferable to form the screw fitting K with a left screw when the screw fitting K is tightened at the time of starting, for example, when the motor shaft 13A is clockwise.

Further, in this embodiment, a reinforcing plate 49 made of, for example, metal is provided on the back surface of the side plate piece 27 of the reel 3 to reinforce the side plate piece 27. In addition, the reinforcing plate 49 has a hole portion 49 having the same shape as the fitting hole 32 at the center thereof, and a screw fitting is used by using a protruding pin 50 extending from the rear surface of the side plate piece 27, an adhesive agent, and the like. It is fixed so as to be able to rotate integrally with the side plate piece 27 without rotating.

[0027]

[Effect of device]

 Since the motor shaft fixing metal fitting and the throttle machine using the same of the present invention have the above-mentioned extremely low structure, the load torque to the step motor can be reduced and the fixing of the motor shaft and the reel can be strengthened. , Can improve the durability of the machine.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing the reel unit.

FIG. 3 is an exploded perspective view showing a mounted state of a reel.

FIG. 4 is an exploded perspective view showing a further attachment state of the reel and the motor shaft.

FIG. 5 is a cross-sectional view showing a mounted state of the reel and the motor shaft.

FIG. 6 is a perspective view illustrating a conventional technique.

[Explanation of symbols]

 1 Throttle Machine 3 Reel 3A Base 4 Display 12 Frame 13 Step Motor 13A Motor Shaft 13A1 Tip 14 Fixing Bracket 29 Boss 30 Screw Hole 31 Notch Face 33 Rotation Stop 40 Base Tube 41 Lid 41A Hole P Picture K Screw fittings

Claims (2)

[Scope of utility model registration request] 1. A reel having a cylindrical substrate, which is composed of a plurality of polymeric resin materials which are driven to rotate by a step motor supported by a frame and which are individually stopped, and which has a display portion having a pattern printed on its outer peripheral surface. A fixture for a motor shaft of a throttle machine used for mounting the reel of a throttle machine and a motor shaft of a step motor, wherein the step motor has a screw hole opened at a front end surface and a part of an outer peripheral surface. The reel has a motor shaft having a notch surface, and the reel has a detent surface for receiving the notch surface at the center of rotation of the base and covers the outer peripheral surface of the motor shaft tip portion. A cylindrical boss that fits into the screw hole is provided, and a metal base tube into which the boss is fitted has a hole through which a screw fitting screwed into the screw hole passes. Part of the formed integrally and fixing bracket of the motor shaft of the throttle machine, characterized in that attached to the motor shaft by the screwing of the screw fitting. 2. A reel having a cylindrical substrate made of a plurality of polymeric resin materials, which are driven to rotate by a step motor supported by a frame and individually stopped, and which has a display portion having a pattern printed on its outer peripheral surface. The stepping motor comprises a motor shaft having a screw hole opened at a front end surface and a cutout surface formed by cutting out a part of an outer peripheral surface, and the reel is configured to rotate the base body. At the center, a rotation preventing surface for receiving the cutout surface is formed, and a cylindrical boss portion that covers the outer peripheral surface and is fitted to the tip end portion of the motor shaft is provided, and a metal boss that fits the boss portion is formed. A lid part having a hole through which a screw fitting screwed into the screw hole passes is integrally provided at the tip of the base cylinder part, and a fixing bracket for a motor shaft attached to the motor shaft by the screw fitting of the screw fitting is provided. Lot Le machine.