| 摘要 |
1. Set pressure indicator for a pressure switch (1) having, in a case (2) with a rear face (5) and opposite this latter, a front face (13) formed by a movable lid (30), a device (9) sensitive to a fluid pressure in which this pressure causes the displacement of a movable control part (10), a pressure spring (14) having a first end (14') which communicates a force to said part for equilibrating the pressure and a second end (14'') cooperating with a set device (15, 15') adapted to modify the compression of said spring an electric switch (19) having a pusher (18) and internal connection terminals for receiving the ends of electric conductors (28), a transmission lever (17) which communicates the displacements of the movable part to said pusher (18), a display part which is connected to the displacements of the second end of the spring or to the set device (15, 15') and has a pointer (22) moving opposite a pressure scale (23), this case having on its surface, a pressure orifice (25) internally connected to the pressure sensitive device (9) and externally to a fluid pressure source to be monitored and an opening for connection (27) through which pass the electric conductors (28), characterized in that said spring (14) associated with the pressure sensitive device (9) has its axis orthogonal to the front face of the movable lid (30) in that the display part (22) has a flexible strip (85) coupled to a movable piece (56, 60) which follows the movements of the second end of said spring (14), and in that the movable lid (30) comprises a passage (83) having a first portion (81) extending towards the interior of the case parallel to the axis of displacement (Y, Y') of said movable piece (56, 60), a second bent portion (80) and third, transparent portion (79) parallel to said front face of the movable lid (30). |
