PRESSURE-TYPE CONTACT SWITCH

摘要

According to the present invention, a pressure-type contact switch comprising: a bourdon tube which expands and contracts depending on water pressure in a discharge conduit applied by a pressure pump; a first actuating lever connected to a free end of said bourdon tube and rotatably installed about a first rotation axis; a link connecting a free end of said bourdon tube and an end of said first actuating lever; a first semi-circle gear formed at the other end of said first actuating lever; a first link gear engaged with said first semi-circle gear and fitted to a central rotation axis to thereby cause said central rotation axis to rotate in normal and reverse directions; a rotation member fitted to said central rotation axis; a second actuating lever which is installed to said rotation member to be rotatable about a second rotation axis; an extension lever fitted to an end of said second actuating lever, wherein a rotation of said extension lever in normal and reverse directions is limited by a movable support rod and a stationary support rod; a second semi-circle gear formed at an end of a second actuating lever; a holder fitted to an upper end of a third rotation axis and having a rotation magnet inserted therein; a second link gear fitted to a lower end of said third rotation axis and engaged with said second semi-circle gear to thereby rotate said third rotation axis in normal and reversed directions depending on the rotation of said second semi-circle gear; a movable magnet arranged to be aligned with said rotation magnet in a straight line when said rotation magnet stops in its rotation by a first stopper, wherein the pressure pump turns off due to repulsive force between said rotation magnet and said movable magnet; and a stationary magnet arranged to be aligned with said rotation magnet in a straight line when said rotation magnet stops in its rotation by a second stopper, wherein the pressure pump turns on due to attractive force between said rotation magnet and said stationary magnet.

主权项

1. Pressure-type contact switch comprising:
a bourdon tube (10) which expands and contracts depending on water pressure in a discharge conduit (2) applied by a pressure pump (P); a first actuating lever (20) connected to a free end of said bourdon tube (10) and rotatably installed about a first rotation axis (21); a link (23) connecting a free end (11) of said bourdon tube (10) and an end of said first actuating lever (20); a first semi-circle gear (20a) formed at the other end of said first actuating lever (20); a first link gear (32) engaged with said first semi-circle gear (20a) and fitted to a central rotation axis (30) to thereby cause said central rotation axis (30) to rotate in normal and reverse directions; a rotation member (40) fitted to said central rotation axis (30); a second actuating lever (50) which is installed to said rotation member (40) to be rotatable about a second rotation axis (52); an extension lever (53) fitted to an end of said second actuating lever (50), wherein a rotation of said extension lever (53) in normal and reverse directions is limited by a movable support rod (45) and a stationary support rod (46); a second semi-circle gear (50a) formed at an end of a second actuating lever (50); a holder (62) fitted to an upper end of a third rotation axis (55) and having a rotation magnet (60) inserted therein; a second link gear (56) fitted to a lower end of said third rotation axis (55) and engaged with said second semi-circle gear (50a) to thereby rotate said third rotation axis (55) in normal and reversed directions depending on the rotation of said second semi-circle gear (50a); a movable magnet (70) arranged to be aligned with said rotation magnet (60) in a straight line when said rotation magnet (60) stops in its rotation by a first stopper (49), wherein the pressure pump (P) turns off due to repulsive force between said rotation magnet (60) and said movable magnet (70); and, a stationary magnet (75) arranged to be aligned with said rotation magnet (60) in a straight line when said rotation magnet (60) stops in its rotation by a second stopper (48), wherein the pressure pump (P) turns on due to attractive force between said rotation magnet (60) and said stationary magnet (70).