Dock slider

A dock slider, comprising:

• a guide column;
• wherein
• an upper wing plate and a lower wing plate are connected by the guide column;
• the guide column is provided on a front end side of the dock slider;
• a space formed between the upper wing plate and the lower wing plate forms a sliding groove;
• an upper guide plate is downwardly and vertically provided from a left edge and a right edge of the upper wing plate, respectively;
• the upper guide plate is configured to limit a sliding direction of the dock slider;
• a lower guide plate is upwardly and vertically provided from a left edge and a right edge of the lower wing plate, respectively;
• the lower guide plate is configured to limit the sliding direction of the dock slider and arranged corresponding to the upper guide plate;
• the upper wing plate and the lower wing plate are respectively provided with an upper limit portion and a lower limit portion at sites adjacent to a rear end side of the dock slider;
• a space surrounded by the upper limit portion and the lower limit portion forms a limit cavity configured to accommodate the rear end side of the dock slider;
• a cross-sectional area of the limit cavity is larger than a cross-sectional area of the sliding groove at the rear end side of the dock slider,
• an upper sliding strip is provided on an inner side of the upper guide plate along the sliding direction of the dock slider;
• the upper sliding strip is connected to both the upper guide plate and the upper wing plate;
• ends of the upper sliding strip are gradually contracted toward the rear end side of the dock slider to form two upper sliding inner arc surfaces;
• a lower sliding strip is provided on an inner side of the lower guide plate along the sliding direction of the dock slider;
• the lower sliding strip is connected to both the lower guide plate and the lower wing plate;
• ends of the lower sliding strip are gradually contracted toward the rear end side of the dock slider to form two lower sliding inner arc surfaces,
• a portion of the upper wing plate between the two upper sliding inner arc surfaces is provided with an upper rear end slope configured to facilitate sliding the dock slider;
• the upper rear end slope is a first smooth arc-shaped end surface, wherein an inner surface of the upper wing plate is gradually contracted toward an outer surface of the upper wing plate to form the first smooth arc-shaped end surface,
• a portion of the lower wing plate between the two lower sliding inner arc surfaces is provided with a lower rear end slope configured to facilitate sliding the dock slider;
• the lower rear end slope is a second smooth arc-shaped end surface, wherein an inner surface of the lower wing plate is gradually contracted toward an outer surface of the lower wing plate to form the second smooth arc-shaped end surface,
• an inner surface of the upper sliding strip is provided with an upper opening arc surface configured to reduce a sliding resistance of the dock slider, wherein the inner surface of the upper sliding strip is adjacent to the rear end side of the dock slider, and
• an inner surface of the lower sliding strip is provided with a lower opening arc surface configured to reduce the sliding resistance of the dock slider, wherein the inner surface of the lower sliding strip is adjacent to the rear end side of the dock slider.