| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive temperature recording device without necessity of a power source, by which a user can know working temperature of a rotary member during rotation.SOLUTION: A temperature recording device 80 attached to a rotary member 54 which rotates, for recording temperature of the rotary member during rotation comprises: a recording body 81 which is attached to the rotary member 54 and forms a guide groove 81a in a radial direction of the rotary member 54; and a moving piece 83 which moves to an outer diameter side along the guide groove 81a by centrifugal force of the rotary member 54. The moving piece 83 is composed of material having a linear expansion coefficient smaller than the recording body 81, and the guide groove 81a is formed to have a width, in a circumferential direction of the rotary member 54, which becomes smaller toward the outer diameter side of the rotary member 54, so that the moving piece 83 having been thermally shrunk can move to the outer diameter side further by the centrifugal force of the rotary member 54. |
