| CPC B60S 1/3858 (2013.01) [B60S 1/3849 (2013.01); B60S 1/3851 (2013.01); B60S 1/3867 (2013.01); B60S 1/3879 (2013.01); B60S 1/3891 (2013.01); B60S 1/4019 (2013.01)] | 8 Claims |
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1. A boneless wiper structure comprising:
a wiper arm (3);
a wiper blade (1), comprising two positioning holes (11) defined on a middle portion thereof opposite to each other, and two protruding bars (14) extended from opposite sides thereof, wherein the two positioning holes (11) are two through holes recessed inward from two sides of the two protruding bars (14); and
a connection base assembly (2), comprising:
a fixing base (21), assembled to the wiper blade (1), comprising two positioning feet (211) extended from a bottom thereof and engaged with the two positioning holes (11), a through indentation (215) defined on the bottom thereof and penetrating through a front side and a rear side thereof, a containing groove (212) defined on a top thereof, and a first engagement groove (213) and a second engagement groove (214) arranged on a front side and a rear side of the containing groove (212), wherein two trenches (216) are oppositely defined on an inner surface of the through indentation (215), the wiper blade (1) is inserted in the through indentation (215), and the two protruding bars (14) are engaged with the two trenches (216); and
a joint base (22), engaged with the containing groove (212), comprising a block (221) extended from one end thereof and engaged with the first engagement groove (213), an elastic fastening arm (222) extended from another end thereof and engaged with the second engagement groove (214), and a recessed groove (223) defined on a top thereof, wherein one end of the wiper arm (3) is accommodated in the recessed groove (223) and pivotally connected to the joint base (22);
wherein the elastic fastening arm (222) comprises an inverted U-shaped spring arm (2221), a triggerable end (2222) and a latch (2223),
the inverted U-shaped spring arm (2221) comprises a first connecting section, a U-shaped lower portion, and a second connecting section, the U-shaped lower portion is U-shaped, two ends of the U-shaped lower portion are respectively connected to the first connecting section and the second connecting section, the first connecting section is extended from the joint base (22) toward the second engagement groove (214) of the fixing base (21), the U-shaped lower portion is extended from an end of the first connecting section and penetrates the second engagement groove (214) to be configured to move in a space defined between the wiper blade (1) and the fixing base (21), the second connecting section is extended from the U-shaped lower portion along a direction away from the second engagement groove (214), the triggerable end (2222) is formed on an end of the second connecting section and protrudes to an outer side of the fixing base (21), the latch (2223) is convex from the second connecting section to penetrate the second engagement groove (214) to abut against an inner side of the fixing seat (21).
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