3 the number of folds of the stress absorber 30 is not limited to that shown in the illustrated example and is appropriately designed depending on e g the swinging amount of the movable lever portion 3 etc the switch device 1 configured as described above exerts the following effects in addition to the effects described above even when the movable lever portion 3 is multi directionally swung back and forth and up and down torsional stress applied to the fpc board 20 is absorbed by the stress absorber 30 formed on the fpc board 2 therefore it is possible to guarantee long term use of the fpc board 20 forming the stress absorber 30 on the fpc board 2 eliminates the necessity of providing an internal space in the unit case 2 to arrange a special member for absorbing stress on the fpc board 20 allowing thinning and weight reduction etc of the switch device 1 since it is not necessary to provide an internal space in the unit case 2 to arrange a member for absorbing stress on the fpc board 20 the layout of components arranged in the unit case 2 is not limited since the stress absorber 30 is formed on the fpc board 20 it is possible to effectively use a narrow space in the unit case 2 by using the stress absorber 30 of the fpc board 2 stress such as torsion etc applied.