Resilient member for guiding smooth pumping of pumping apparatus, and pumping apparatus comprising same

An elastic member, comprising:

• a lower support portion 110 in a ring structure having predetermined outer diameter and thickness from a plane view, which is made of a plastic material having a predetermined resilient restoring force;
• a first resilient portion 120 integrally bound to the lower support portion 110 or one side of a second resilient portion 130, the binding being implemented to have a bottom surface that forms a predetermined acute angle with the lower support portion 110 or a top surface of the second resilient portion 130, which has a ring structure with the same outer diameter and thickness as the lower support portion 110 from the plane view, and is made of a plastic material having a predetermined resilient restoring force;
• the second resilient portion 130 integrally bound to the other side of the first resilient portion 120 wherein a binding position to the other side of the first resilient portion 120 is in a direction at the opposite side of a position where the lower support portion 110 and the first resilient portion 120 are bound to each other from the plane view, the binding being implemented to have a bottom surface that forms a predetermined acute angle with the top surface of the first resilient portion 120, which has a ring structure with the same outer diameter and thickness as the first resilient portion 120 from the plane view, and is made of a plastic material having a predetermined resilient restoring force;
• an elastic structure forming unit 140 in which the first resilient portions 120 and the second resilient portions 130 are continuously and alternately bound to form a single elastic binding structure;
• and
• an upper support portion 150 integrally bound to one side or the other side of an uppermost component among the first resilient portions 120 and the second resilient portions 130 that form the elastic structure forming unit, the binding being implemented to have a bottom surface that forms a predetermined acute angle with a top surface of the uppermost component, which has a ring structure with the same outer diameter and thickness as the lower support portion 110 from the plane view, and is made of a plastic material having a predetermined resilient restoring force,
• wherein the lower support portion 110 and the upper support portion 150 are configured to form a predetermined angle with a mounting surface 181 on which these are mounted, or
• are configured parallel to the mounting surface 181 on which these are mounted,
• a longitudinal cross-sectional structure of the lower support portion 110 is a polygonal structure formed by a combination of vertical lines and horizontal lines,
• a thickness (T1) in a height direction on a longitudinal cross-section of the lower support portion 110 is a length of 10 to 20% compared to the outer diameter (OD),
• while a width (D1) of each of one side and the other side on the longitudinal cross-section of the lower support portion 110 is a length of 10 to 20% compared to the outer diameter (OD),
• a thickness (T2) in a height direction of a binding part 191 where the one side of the lower support portion 110 and the first resilient portion 120 are bound to each other is a length of 150 to 180% compared to the thickness (T1) in the height direction on the longitudinal cross-section of the lower support portion 110,
• while a width (D2) in the height direction of the binding part 191 where the one side of the lower support portion 110 and the first resilient portion 120 are bound to each other is a length of 80 to 100% compared to the thickness (T1) in the height direction on the longitudinal cross-section of the lower support portion 110,
• wherein the thickness in the height direction on the longitudinal cross-section of each of the first resilient portion 120, the second resilient portion 130 and the upper support portion 150, the width of each of one side and the other side on the longitudinal cross-section, the thickness in the height direction of the part bound to another component, and the width of the part bound to another component, respectively, are the same as those of the lower support portion 110.