Support structure

A support structure, the support structure supports drive shaft (10, 40) that performs reciprocating motion comprising reciprocating linear motion or reciprocating rotary motion in an electric cleaning care appliance, the electric cleaning care appliance comprises a stationary upper device housing, a stationary lower device housing, and a head, at least a part of the drive shaft (10, 40) is located in the stationary lower device housing, under the action of drive force (F1, F2) of reciprocating linear motion or reciprocating rotary motion, the drive shaft (10, 40) reciprocates relative to the lower device housing along or about its longitudinal axis (L1, L2), a head driven by the drive shaft (10, 40) is also provided in the stationary upper device housing, the transverse axis (L3, L4) of the head is perpendicular to the longitudinal axis (L1, L2) of the drive shaft (10, 40), the support structure for supporting the drive shaft is provided in the lower device housing,

• wherein the support structure (20, 50) comprises an inner fixing ring (23, 53) of the support structure, at least one elastic member (22, 52) of the support structure and an outer fixing ring (21, 51) of the support structure, the inner fixing ring (23, 53) of the support structure is fastened on the drive shaft (10, 40) along a circumferential direction of the drive shaft (10, 40), the outer fixing ring (21, 51) of the support structure is directly or indirectly fastened on an inner wall of the lower device housing, the elastic member (22, 52) of the support structure is distributed between the outer fixing ring (21, 51) of the support structure and the inner fixing ring (23, 53) of the support structure, an outer end (A, C) of the elastic member (22, 52) of the support structure is fixedly coupled to the outer fixing rings (21, 51) of the support structure, an inner end (B, D) of the elastic member (22, 52) of the support structure is fixedly coupled to the inner fixing ring (23, 53) of the support structure, causing that the elastic member (22, 52) presents elastic bending deformation under the action of the relative movement of the drive shaft (10, 40),
• wherein, on a cross section of the elastic member (22, 52) of the support structure perpendicular to a radial direction of the drive shaft (10, 40) is distributed a width (b1, b2) along a direction perpendicular to the drive force (F1, F2), on a cross section of the elastic member (22, 52) of the support structure perpendicular to a radial direction of the drive shaft (10, 40) is distributed a thickness (t1, t2) along a direction parallel to the drive force (F1, F2), the width (b1, b2) of the elastic member (22, 52) of the support structure along the direction perpendicular to the drive force (F1, F2) is greater than three times the thickness (t1, t2) of the elastic member (22, 52) of the support structure along the direction parallel to the drive force (F1, F2), that is, b1>3t1, b2>3t2.