| 摘要 |
A self-closing door hinge comprises two co-axial cam elements 14, 16 urged together by a spring. Each element 14, 16 has two cam edges (46, 50 and 52, 54 Fig. 2) which are diametrically related and axially spaced with dwell portions (48, 54 Fig. 2) between them. One part 16 is angularly fast with a spindle 16 connected to an arm 22. As the arm is turned cam element 16 will axially displace the other cam element 14. After the door is turned through about 90 DEG the dwell portions are reached. In this position the spring will not act to return the door to the closed position. Further angular movement of the door will result in further axial displacement of the other cam element 14 causing the spring to again act to close the door. At the dwell position there may be a slight return axial movement of the other cam element 14. <IMAGE> |
