12-09-2019 дата публикации
Номер: US20190277413A1
Принадлежит:
A push button switching spool includes a switching body. The switching body includes a housing, a water inlet and a water outlet, wherein the housing comprises an upper casing and a lower casing with a gap for passing water. A mandrel is disposed in the housing, and the mandrel axially moved within the housing. The mandrel comprises a plurality of grooves with sealing rings. And, a left protrusion and a right protrusion are formed on each groove, wherein a diameter of the left protrusion is the same as a diameter of the right protrusion. The push button switching spool can normally switch water paths at high water pressure. 1. A push button switching spool , comprising:a switching body, having a housing, a water inlet and a water outlet, wherein the housing comprises an upper casing and a lower casing with a gap for passing water;a mandrel, disposed in the housing, the mandrel axially moved within the housing, wherein the mandrel comprises a plurality of grooves with sealing rings; anda left protrusion and a right protrusion, formed on the each groove, wherein a diameter of the left protrusion is the same as a diameter of the right protrusion.2. The push button switching spool as recited in claim 1 , further comprising:a restoring spring, disposed between the mandrel and the lower casing;a rotating member with a first spring tooth, connected with the mandrel, wherein one end of the mandrel is covered by the lower casing and the other end of the mandrel is covered by the upper casing;a built-in button, coupled with the rotating member, wherein the built-in button comprises a second spring tooth cooperating with the first spring tooth; anda step surface for contacting the first spring tooth, disposed in the upper casing.3. The push button switching spool as recited in claim 1 , wherein the switching body comprise a water inlet claim 1 , a first water outlet and a second water outlet.4. The push button switching spool as recited in claim 3 , wherein the grooves are a ...
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