| 摘要 |
PROBLEM TO BE SOLVED: To prevent a hand or foot from being caught between a fence part and a floor part even when the floor part is adjusted in the state of putting out the hand or foot to the fence part being a component of a side fence. SOLUTION: A main body 6 of a fence part has a base pipe 6a, a lower outer pipe 6b integrally coupled closely to both the ends of the base pipe 6a to be raised while being curved in the form of circular arc and an upper outer frame pipe 6c, and has an inner frame pipe 6d integrally coupled in the middle of the base pipe 6a to be raised while being curved in the form of circular arc similarly. Besides, a longitudinal frame pipe 6e is integrally coupled closely to the top end side of the lower outer frame pipe 6b and the upper outer frame pipe 6c, and the inner frame pipe 6d is integrally coupled in the middle of this longitudinal frame pipe 6e. Such a spot linking the longitudinal frame pipe 6e and the inner frame pipe 6d is located higher than a mattress M on a back bottom 3 for a prescribed distance or more and spaces O1 and O2 surrounded by the upper outer frame pipe 6c and the inner frame pipe 6d and by the lower outer frame pipe 6b and the inner frame pipe 6d are formed to be continued to the circular arc extended from the longitudinal direction of the main body 8 of the fence part to the lateral direction thereof. |
