Wiper connector and bolt-stabilizing sleeve adaptor

A wiper connector for adapting wiper blades onto a wiper arm having a bolt, wherein the wiper arm has a shoulder portion, comprising:

• a sleeve tube having a tube body, a first flange, and a second flange respectively extending from two ends of the tube body, wherein the sleeve tube has a pivoting hole defined therein, wherein one end of the pivoting hole forms an opening that is accommodatable for the bolt of the wiper arm, wherein the first flange defines a receiving compartment;
• a fastening member having a circular ring body and a plurality of flexible abutting portions, wherein the circular ring body is a continuous ring-shaped structure without gaps;
• wherein the fastening member is fixed in the receiving compartment of the first flange, and the plurality of flexible abutting portions are formed protrudingly from an inner fringe of the circular ring body of the fastening member, and the plurality of flexible abutting portions are inclined toward the pivoting hole, wherein the bolt is inserted into the pivoting hole via the fastening member via the pivoting hole,
• wherein the plurality of flexible abutting portions each has such a size and an inclined angle toward the pivoting hole and toward the second flange so that the bolt is unidirectionally and slidably inserted into the pivoting hole via the fastening member from the first flange of the sleeve tube, the bolt contacts the flexible abutting portions and pushes the flexible abutting portions to incline toward the pivoting hole, thus the bolt is tightly engaged by the plurality of flexible abutting portions and the bolt is unable to be extracted out of the pivoting hole, and a circumferential portion of the bolt is tightly engaged by the plurality of flexible abutting portions;
• and
• a base having a clutching trough, a first restricting trough, and a second restricting trough connected to two ends of the clutching trough;
• wherein the base is fixed to the wiper blade;
• wherein the first and the second flanges of the sleeve tube are respectively receivable in the first and the second restricting troughs;
• wherein the tube body of the sleeve tube is receivable and engaged tightly within the clutching trough;
• wherein the fastening member is separable from the sleeve tube;
• wherein each of the first and second restricting troughs is an arced trough having an opening on a top portion thereof;
• wherein the first flange has a diameter larger than a diameter of the second flange, wherein the first restricting trough has a width larger than a width of the second restricting trough.