| 摘要 |
PROBLEM TO BE SOLVED: To provide a position regulation device for display wheel that can perform accurate position regulation by smoothly rotating a display wheel in forward and reverse directions, and can be made thin on the whole.SOLUTION: The position regulation device for display wheel includes a regulation part 33 which has a display wheel 4 fitted rotatably to a base plate 12 and having internal teeth 4a at an inner periphery and a regulation lever 32 engaging the internal teeth 4a of the display wheel 4 to regulate the position of the display wheel 4, and regulates the rotational position of the display wheel 4 through engagement of the regulation lever 32 with the internal teeth 4a of the display wheel 4; and a spring part 34 which has a pair of arm parts 34a for applying elastic force in a normal direction of the display wheel 4 of the regulation part 33. A storage recessed part 35 for storing the regulation lever 32 is formed in the base plate 12, and a press plate 22 which covers the storage recessed part 35 is fitted to the base plate 12. The display wheel 4 can be smoothly rotated, the position of the display wheel 4 can be accurately and securely regulated by the regulation lever 32, and the device can be made thin on the whole. |
