Title:
遊技機
Document Type and Number:
Japanese Patent JP6709465
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a game machine in which a vibration or a sound at a low speed rotation of a motor such as a stepping motor or the like is reduced with a simple structure and a low cost.SOLUTION: Switching parts Sa and Sb are turned on by a main CPU 45 until a rotation speed V of a stepping motor M1 in driving circuits Da and Db exceeds a predetermined speed Vt. A current caused by a back electromotive force that is generated in an A-bar phase winding ka2 and a B-bar phase winding Kb2 flows in a close circuit of each of the switching parts Sa and Sb in an ON state and each of the A-bar phase winding ka2 and a B-bar phase winding Kb2. A magnetic flux caused by the current flowing in the close circuit occurs to a direction for eliminating the magnetic flux due to a flowing current by the driving circuits Da and Db to an A phase winding ka1 and a B phase winding Kb1. A brake force is applied to the stepping motor M1, and a vibration or a sound of the stepping motor M1 rotated at the predetermined speed Vt or less is reduced.SELECTED DRAWING: Figure 2
Inventors:
Toru Esumi
Fukushima Junzo
Terubun Danjo
Naoto Ito
Fukushima Junzo
Terubun Danjo
Naoto Ito
Application Number:
JP2016195811A
Publication Date:
June 17, 2020
Filing Date:
October 03, 2016
Export Citation:
Assignee:
Yamasa Corporation
International Classes:
H02P8/32; A63F5/04
Domestic Patent References:
| JP59123497A | ||||
| JP2004215765A |
Attorney, Agent or Firm:
Ryose Uji
Maruyama Yosuke
Maruyama Yosuke