Door operating apparatus, electromagnetic clutch, and coupling mechanism

Abstract

A door operating apparatus includes a motor bracket that covers a driving shaft of a driving motor; an output shaft that is disposed from the motor bracket toward the supporting bracket so as to be orthogonal to an extending direction of the driving shaft; a first rotational element that is linked with the driving shaft, and disposed on the output shaft; a second rotational element that is linked with a door operating mechanism, and disposed between the first rotational element and the supporting bracket on the output shaft; and a clutch unit including a clutch driving section that supports a rotation of the output shaft. When the first rotational element and the second rotational element are engaged by driving of the clutch driving section, the door operating mechanism is actuated by the driving force.

1 . A coupling mechanism comprising: 
 a first member including a head portion in a spherical shape;    a second member including a recessed portion that fits with the head portion; and    a spacer that is provided between the first member and the second member, and generates an elastic force such that the first member and the second member are separated from each other.    
   
   
       2 . The coupling mechanism according to  claim 1 , wherein 
 the spacer is provided along a circumference of a proximal end of a shaft portion fixed to the first member having the head portion at a distal end thereof, and    when the head portion and the recessed portion are fitted to each other, the spacer is pressed between the first member and the second member, and generates an elastic force in an axial direction of the shaft portion.    
   
   
       3 . The coupling mechanism according to  claim 1 , further comprising a transmission portion that is provided between a driving section and an operating member such that a driving force of the driving section is transmitted to the operating member to constitute an operating apparatus that opens and closes the operating member by the driving force from the driving section, wherein 
 the head portion is provided with a side of the driving section or a side of the operating member as the first member,    the recessed portion is provided with a side of the transmission portion as the second member, and    the spacer is provided between the side of the driving section and the side of the transmission portion or between the side of the operating member and the side of the transmission portion