WATER PUMP
FIG2 is a cross-sectional view illustrating a state in which a check valve of a water pump according to an embodiment of the present disclosure is closed
In particular, referring to FIG2, the check valve 1150 may include a valve cylinder 1151, a latching protrusion 1152, and a sealing ball 1153. The latching protrusion 1152 protrudes inward from an inner surface of the valve cylinder 1151. A protruding shape may vary and is not limited to that shown in FIG2. According to movement of the piston 1310, some of the cooling water inside the hydraulic space 1200a is introduced into the check valve 1150. In this case, as shown in FIG2, the sealing ball 1153 is caught at the latching protrusion 1152 by pressure applied by the cooling water inside the hydraulic space 1200a. Accordingly, the sealing ball 1153 closes the flow path 1151a and movement of the cooling water through the flow path 1151a is not realized.
cross-sectional view
1150
check valve
1153
sealing ball
['7. The water pump of claim 5, wherein the body portion further comprises a check valve accommodated inside the housing to face a cooling water flow hole of which one end is connected to the cylinder portion and the other end is provided at the impeller cover, and preventing the cooling water from being introduced from the cylinder portion to the body portion by being closed when the piston moves in a direction towards the body portion.', '8. The water pump of claim 7, wherein the check valve comprises: a valve cylinder having therein a flow path communicating the body portion and the cylinder portion; a latching protrusion protruding from an inner surface of the valve cylinder; and a sealing ball located on the flow path and closing the flow path by being caught at the latching protrusion by the cooling water flowing from the cylinder portion to the body portion.']