JPH1147371A - Display device for game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device for a game machine capable of eliminating the irregularity of frame positions between with an adjacent display device without requiring the fixing position adjustment of the display device by simple constitution. SOLUTION: The display device of the game machine consists of a display drum 2 obtained by dividing an outer peripheral surface into many frames and a stepping motor 3 for driving it. A projection 9a making a positioning part fit with the side of the hub 8 of a display drum 2 is formed at the shaft tip position of a rotor 5, the diameter of this positioning part is made larger than that of a rotor shaft 7 and this positioning part and the rotor 5 are constituted of an integrally molded member. In addition, a photo sensor 6a for detecting a rotary position and its detector 10 are set inside the rotor 5 of the motor 3, the optical axis A of the sensor 6a is arranged in a radial direction and the detector 10 is formed at a fixed radial position in one body with the rotor 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display for a game machine having a display drum, and more particularly, to a frame position between an adjacent display and a simple structure without adjusting the mounting position of the display. The present invention relates to a display device of a gaming machine which can eliminate the irregularity of the game machine.

[0002]

2. Description of the Related Art FIG. 4 is a perspective view of a display section of a gaming machine and its display. A display unit provided in a game machine such as a pachinko machine or a slot machine is constituted by a plurality of rotary display devices.
The display 100 includes a motor 101 and a display drum 10.
2, which are arranged in three rows via the mounting plate 100a. Each display drum 102 divides its outer peripheral surface into a number of frames P, and displays one frame P together with adjacent frames in a horizontal line from a horizontally long window (not shown).

FIG. 5 is a sectional view showing a main part of a display of a gaming machine. The motor 101 has a fixed-side field coil 1.
03, 103 and the magnet part 10 facing the inside thereof
And a position detecting unit 105 inside the rotor 104 and a display drum 10 at the shaft end of the rotor shaft 104b.
The positioning member 106 for assembling 2 is assembled.
The positioning member 106 forms a detent fitting portion called a D-cut, and defines an angular position of the display drum 102 with respect to the rotor shaft 104b.

The position detecting section 105 comprises a fixed-side reflection sensor 108 and a reflection section 109 formed on the rotor 104. By arranging the optical axis in the axial direction, the processing of the rotor can be facilitated and obtained. The position detection unit is constituted by a reflection sensor that is easy to use.

[0005]

However, as a first problem, the above-mentioned rotor 104 is mounted on the rotor shaft 104b.
The positioning member 106 is displaced due to an error in each step of mounting the positioning member 106 by magnetizing the magnet portion 104a, and the displacement caused by the fitting between the positioning member 106 and the display drum 102 is superimposed. Therefore, the angular positions of the pieces P of the display drum 102 may not be aligned between the adjacent display devices.
In order to eliminate the irregularities, the work of mounting and adjusting the mounting plate 100a has been required.

[0006] As a second problem, the rotor 104
And the rotor shaft 104b, and between the fixed side and the rotor shaft 104b, the influence of the variation in the axial assembly dimensions is doubled in the reciprocating stroke of the reflection sensor optical path, so that the sensor output becomes individual, As shown in FIG. 6, the sensor output sharply rises when the reflection sensor and the detection object approach (C1), and becomes slow when separated from the reflection sensor (C1).
2) The signal waveform changes according to the reflection distance.

Therefore, the detection timing (A,
Since an error in the detected position of the rotation angle occurs due to the deviation (ΔT) of B), a sensor output adjusting means such as a variable resistor is provided to suppress the error within a certain range, and a rotor is assembled to adjust to a certain detection level. After adjustment, individual adjustment work was indispensable.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a display for a gaming machine which can eliminate irregularities in the positions of pieces between adjacent displays with a simple configuration without adjusting the mounting position of the display. It is in.

[0009]

In order to solve the above-mentioned problems, in a display of a gaming machine comprising a display drum having an outer peripheral surface divided into a number of pieces and a stepping motor for driving the display drum, a rotor of the stepping motor is provided. A positioning portion for assembling the display drum was formed outside the shaft diameter of the rotor shaft at the shaft end position, and the positioning portion was formed integrally with the rotor, and the display drum was fitted to the positioning portion.

In the display device of the gaming machine according to the present invention, since the positioning portion and the rotor are formed as an integrally formed member, the angle error of the positioning portion with respect to the rotor is suppressed within the molding accuracy, and the positioning portion is formed with the shaft diameter of the rotor shaft. Since the display drum is formed at a more outward position, the display drum is directly positioned with high precision with respect to the rotor, and an assembly error between the positioning portion and the display drum can be suppressed to a small value. Therefore, with a simple configuration, it is possible to eliminate irregularities in the frame positions between the adjacent display devices without requiring the display device to be mounted and adjusted. In the case where the positioning portions have different shapes in an axially symmetric arrangement, a simple configuration can prevent a drum from being erroneously assembled and secure a highly accurate assembling angle.

A photosensor for detecting a rotational position and a detector thereof are provided inside the rotor of the stepping motor, and the optical axis of the photosensor is disposed in a radial direction. By integrally forming, it is possible to avoid the influence of assembly error of the components in the axial direction of the rotor, so that the positioning unit has a simple configuration that does not require the output adjustment of the photo sensor including the reflection type sensor. The positioning accuracy of the display drum assembled in the above can be improved.

[0012]

FIG. 1 is a sectional view showing a drive unit of a display unit of a game machine according to the present invention. The display 1 includes a display drum 2 displaying a large number of frames on an outer peripheral surface, and a stepping motor 3 for driving the display drum 2. This stepping motor 3
Is a frame plate 3a on the fixed side, and the frame plate 3a
Field coils 3b, 3b fixed to the
b, 3b, and a rotor 5 having a magnet portion 4 facing inward.

Protrusions 9a and 9b are formed at the shaft end of the rotor shaft 7 of the rotor 5 and serve as positioning portions for mounting the display drum 2. Together with the positioning portion, the rotor 5 forms an integrally formed member including the metal rotor shaft 7 by insert molding or the like. The positioning portion has a large-diameter portion 5a having a larger diameter than the rotor shaft 7 at the shaft end position of the rotor 5, and has a fitting structure for fitting with the hub 8 side of the corresponding display drum 2.

FIG. 2 is a view showing an example of a fitting structure of the positioning portion as viewed from the direction of the arrow II in FIG. The fitting structure of the large-diameter portion 5a is such that, for example, two differently shaped projections 9a and 9b such as an ellipse and a circle are formed at axially symmetric positions, and the projections are formed in a concave shape. In other words, a so-called D-cut or an irregularly shaped projection having an axially symmetric arrangement is formed by a positioning portion formed on the outer periphery of the large diameter portion. This positioning portion is fitted to the hub 8 side of the corresponding display drum 2 to thereby form the rotor shaft 7.
It has a larger diameter fitting structure.

In the display device 1 having the above-described configuration, the positioning portion formed by the projections 9a and 9b and the like, which are arranged symmetrically with respect to each other, has the rotor shaft 7 as the positioning portion.
Since the rotor 5 and the positioning portion are integrally formed as a molded member, the error of the angular position is suppressed within the molding accuracy of the rotor 5, and
Avoid angular misalignment during assembly between individual members,
, The drum 2 can be positioned directly. Therefore, it is possible to secure the drum position accuracy with a simple configuration while avoiding an erroneous assembly, and to eliminate irregularities in the frame positions between adjacent display units without the need for mounting and adjusting the display units. it can. Further, in the case where the projections having the axially symmetric arrangement are formed on the outer periphery of the large-diameter portion, the positioning portion can minimize the angle error at the time of mounting.

FIG. 3 is an enlarged sectional view showing a main part of a display of another gaming machine. The description of the same members as described above is omitted by giving the same reference numerals. The display 21 includes a photosensor 6a inside the rotor 5, a detection body 10 facing the photosensor 6a and forming an interrupter or the like, and the position detection means 6 is formed by the detection body 10 and the photosensor 6a. Constitute.

The photo sensor 6a is fixed to the frame plate 3a, and its optical axis A is arranged in the radial direction. The detector 10 protrudes from the end plate 11 of the rotor 5 and is formed at a fixed radial position, and includes a detection reference portion (not shown) that changes the state of light by blocking, transmitting, absorbing, reflecting, and the like. The detection reference portion is formed at a predetermined angular position with respect to a positioning portion such as the protrusion 9a.

The rotor 5 includes a positioning portion and a rotor shaft 7 formed by insert molding or the like, and is configured as an integrally formed member including the detection body 10, and is magnetized at an angular position determined based on the detection reference portion. Thus, the magnet portion 4 of the rotor 5 is formed.

The display 21 having the above-described structure is used for the detection object 10.
Is formed at a constant radial position, and the optical axis A of the photosensor 6a is arranged in the radial direction, so that the detection body 10 can be arranged in the radial direction that enables high-precision processing. Even if there is an assembly error in the axial direction on the rotation side, the accuracy of the distance between the photosensor 6a and the detection body 10 can be easily ensured. In particular, by integrally forming the detection body 10 as a part of the rotor 5 requiring the accuracy of the radial gap, the accuracy can be easily ensured.

Therefore, the display device of the present invention can secure the detection level within a certain range, so that the position can be detected with high accuracy by a simple configuration that does not require adjustment of the detection level of the photosensor. Become.

As the position detecting means 6, a transmission type photo sensor 6 having a light emitting section and a light receiving section at opposing positions is provided.
When a is used, high-accuracy position detection can be performed by a transmission type photosensor having a small gap without being affected by an assembly error in the axial direction between the fixed side and the rotating side.

As described above, in the display device, since the large-diameter positioning portion and the detection body are integrally formed as a part of the rotor, the display drum fitted to the positioning portion and the detection portion are connected via the rotor. Since it is directly connected, including the case of using a reflection type photo sensor, it is possible to avoid an angle deviation at the time of assembling between individual members, while securing a simple configuration,
An error in the rotation angle position can be reduced.

[0023]

The display of the gaming machine of the present invention has the following effects. Since the positioning part and the rotor are formed as an integrally molded member, the angle error of the positioning part with respect to the rotor is suppressed within the molding accuracy, and since the positioning part is formed at a position outside the shaft diameter of the rotor shaft, the display drum is Positioning is directly performed with high precision with respect to the rotor, and assembling errors between the positioning portion and the display drum can be reduced. Therefore, the display of the gaming machine according to the present invention can eliminate the irregularity of the position of the frame between the adjacent display and the display with a simple configuration without requiring the display to be adjusted. In the case where the positioning portions have different shapes in an axially symmetric arrangement, a simple configuration can prevent a drum from being erroneously assembled and secure a highly accurate assembling angle.

A photosensor for detecting a rotational position and a detector thereof are provided inside the rotor of the stepping motor, and the optical axis of the photosensor is disposed in a radial direction. By integrally forming, it is possible to avoid displacement of position detection due to an error in assembling components in the axial direction of the rotor, so that a simple configuration that does not require output adjustment of the photo sensor including the reflection type sensor is provided. In addition, the positioning accuracy of the display drum assembled to the positioning section can be improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a drive unit of a display device of a gaming machine according to the present invention.

FIG. 2 is a diagram showing an example of a fitting structure of a positioning unit as viewed from the direction of arrow II in FIG. 1;

FIG. 3 is an enlarged sectional view showing a main part of the display of the gaming machine of FIG. 1;

FIG. 4 is a perspective view of a display unit of the gaming machine and its display device.

FIG. 5 is a cross-sectional view showing a main part of a display unit of a conventional gaming machine.

FIG. 6 shows detection characteristics of a photo sensor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Display 2 Display drum 3 Stepping motor 4 Magnet part 5 Rotor 6 Position detection means 6a Photosensor 7 Rotor shaft 8 Hub (fitting part) 9a, 9b Projection part (positioning part) 10 Detector (interrupter) 11 End plate 21 Display A Optical axis P piece

Claims (3)

[Claims] 1. A display for a game machine comprising a display drum having an outer peripheral surface divided into a number of pieces and a stepping motor for driving the display drum, wherein the outer diameter of the stepping motor is larger than the diameter of the rotor shaft at the shaft end position of the rotor. A positioning portion for assembling the display drum, and the positioning portion is formed integrally with the rotor, and the display drum is fitted into the positioning portion. 2. The display according to claim 1, wherein the positioning portions have different shapes in an axially symmetric arrangement. 3. A photosensor for detecting a rotational position and a detector thereof are provided inside a rotor of the stepping motor, an optical axis of the photosensor is disposed in a radial direction, and the detector is positioned at a constant radial position. The display of a gaming machine according to claim 1, wherein the display is formed integrally with the rotor.