| 摘要 |
1,158,968. Door closing and checking device. VEREINIGTE BAUBESCHLAGFABRIKEN GRETSCH & CO. G.m.b.H. 16 Oct., 1967 [12 Nov., 1966], No. 47013/67. Heading E2M. A door closing and checking device of the kind comprising a closer spindle 4 which extends out of a housing and to which is secured a lever 15 to be connected to a door, having a closing cam 7 mounted on the spindle and engaged by a closing cam follower (lever 8, roller 9) loaded by a closing spring, and a checking cam 5 mounted on the closer spindle and engaging a checking cam follower (lever 10, roller 11) for transmitting forces between. the closer spindle and a hydraulic damping arrangement which includes a damping cylinder and piston 6, and wherein the closer spindle (see Fig. 5) can make limited rotational movements (via application surfaces 12) in relation to the checking cam (surfaces 13, 14), is characterized in that an elastically-yieldable braking means is interposed to act between the closer spindle and the checking cam so as to retard the said limited rotational movements. The braking means may be:-(i) a dished spring 23 (Fig. 1) which presses the checking cam against a stop shoulder 21 on the spindle and bears on a sleeve 22 pressed on to the spindle, (ii) a rubber peg 28 (Figs. 4 and 5) held in bores 26, 27 in a projection on the closer spindle and in the checking cam, or (iii) a steel ball 31 (Fig. 6) with a helical spring 30 arranged to press the ball into recess 33. The invention prevents chattering noises which otherwise occur during swinging motion of the door through the closed position. |
