Joined metal-resin plate body, swing-type actuator made using the same, and processes for producing these

A swing-type actuator comprising:

• a turnable carriage provided with a hole for fitting a turning shaft thereinto;
• resin arms extending from said carriage and having a distal end removed from said hole;
• and
• metal support springs having one end thereof joined to said distal end of said resin arms and the other end of each metal support spring supporting a head;
• wherein said distal end of said resin arms and said one end of said metal support spring are joined together by means of an insert member and a metallic joining member,
• said insert member having a through-hole, embedded in said distal end of the resin arm, and brought into close contact with the resin arm in the outer periphery of the insert member except for the faces thereof where said through-hole is open;
• said metallic joining member being fitted into said through-hole of the insert member and adhered to said one end of said metal support spring to join said resin arms and said metal support springs in a superposed state;
• and
• said insert member and the surrounding resin having elastic stresses and said metallic joining member being plastically deformed outward in the radial direction thereof, enough to give rise to sufficient joining forces among said joining member, said insert member and said resin arm, and the stress of said surrounding resin being due to elastic deformation.