| 摘要 |
PROBLEM TO BE SOLVED: To prevent or restrict occurrence of disadvantages in which a second member is dropped from a first member in a junction structure for a member that can be moved toward or away from between the two members by threadably advancing or retracting a threaded shaft arranged at the second member against a threaded hole in the first member.SOLUTION: This member junction structure is made such that it has a C-ring 144, acting as a stopper member resiliently engaged at any of the locations of a female threaded groove 12b that is arranged at a caster 14 acting as a second member so as to be threadably advanced or retracted in respect to a threaded hole 12a having a female threaded groove 12b at its inner periphery while being arranged at a rear leg 12 acting as a first member, that is outwardly installed at a narrow part 143 of a threaded shaft 141. In the case that the C-ring 144 is pressed in an axial direction under a state in which its resilient deformation is allowed, the engaging location in respect to the female threaded groove 12b can be changed moderately. There is provided an allowable abutment surface 145 at one end side of the narrow part 143 that presses the C-ring 144 in an axial direction while allowing a resilient deformation and the other end side has a prohibiting abutment surface 146 for prohibiting a resilient deformation of the C-ring 144. |
