| 主权项 |
1. A joint mechanism that connects a first member and a second member in a relatively displaceable manner, comprising:
a zigzag structure which is composed of an elastic member formed between a first member and a second member such that the elastic member extends from the first member toward the second member in a zigzag pattern having an amplitude in a lateral direction, which has an end portion thereof adjacent to the first member and an end portion thereof adjacent to the second member connected to the first member and the second member, respectively, and which is deformably configured to allow a length in a direction of an amplitude centerline thereof and a bending degree of the amplitude centerline to be changed; a flexible lengthy member which is disposed to extend from the first member toward the second member, which has one end portion adjacent to the first member fixed to the first member, which is provided to be travelable with respect to the second member, and which applies a force for pressing the zigzag structure between the first member and the second member to the zigzag structure in a state in which a tension is being applied; and a tension application unit which is a device for applying a tension to the flexible lengthy member from the other end portion side of the flexible lengthy member and which is configured to be capable of changing a magnitude of the tension. |
