| 摘要 |
PROBLEM TO BE SOLVED: To provide a hinge unit that can reduce the number of components and can be downsized.SOLUTION: The hinge unit includes: a first plate 30; a base member 10 connected to the first plate 30 relatively rotatably; second plates 40A and 40B connected to the base member 10 relatively rotatably; and a substrate holder 70 for holding a switch substrate 60. The switch substrate 60 is attached to the base member 10 via the substrate holder 70. The substrate holder 70 includes arm parts 73A and 73B having engaging pawls 74A and 74B for preventing detachment of the switch substrate 60. |
