| 摘要 |
A coupling for coupling a towed vehicle to a towing vehicle is described. One embodiment of the coupling is a self-actuating coupling which includes: a towball receiver body including a receiver void disposed within the towball receiver body, the receiver void including one or more internal walls for cooperating with a towball; a locking element disposed within the towball receiver body, the locking element movable between a stowed position in which the locking element allows the towball to move freely in and out of the receiver void, and a deployed position in which the locking element extends into the receiver void to inhibit movement of the towball out of the void; and a lock actuation assembly operatively connected with the locking element and including a lock self actuator comprising a distal end, the lock self-actuator being movable between a standby position and an actuation position, wherein the lock actuation assembly includes a biasing means operatively connected to the lock self-actuator to bias the distal end into the receiver void so that when a towball is received into the receiver void the lock self-actuator is driven by the towball against the bias to an actuation position to move the locking element between the stowed position and the deployed position. '2 2 ~N"' N N K. 4" 4' N ~' ~ .~'' ~ / 2 "&' " 'N" ' $ "~2 N*NN ~"NN >2 ' ' NNN~ / At 'N N' 'N 'N 2 '2"" ~ " ' "N' N "N' >2 ~ *' "" 'N""' >2 '~' N ~ '~ ""N' & "~ ~> ~tA ">' ' ' N "# /~ "N "Nh N~ ~'/ N NNN/ N~ N/N/ N NN N/ N// *'.~ N /~ /~ ~ "N ~' /~ N "N >N 2 ~""'N""N'N"""" ~ Nx /~ N/ // '>2. ~ N N2 N / N N N / NN >2' 4 ~ N~ NN N N / NN NN ~'N N/N "N NN NN "NN NN "N / N N/ / N~ NN '~N >N NN / N / N/ NN N N NN N "' /NNNNNNNNNNNN2"NNNN N N / N N'2 ~' / / N/ N' ~ ""'N/ 2/ N N~,* '%'~ N A N N/ NN N/ NNoNN~~ 'N NN N NN ~N/N ~ """N / N/ / / /~'' N >2 / N/ N N~ N~' 'N N ~ ' N 2 ~ N~ NN N N N22 ' 'N "N NN "N 2 N NN NN N ~ / " 2' "2 <~ N N NN ~' ~' ' ~~""""k' N N /'N / NN N N N '/""'"" V a N~ NN N~ ' ~ N~ NN NN 2~NN/ A / N~/ '>2" 2 ~NN N~ "N NN ~~>2' 'N */ "N N' NN N~'N~ *>2 ' >2 NN NN N "N N/ / ~ /4N.>< N /N N / ~>~/ / NN N~ 4 N NN / N 2 "N "N "N 'N> ~ N~ NN >2 >2'N2N~ 2NN 2 NN "N NN 2 '/'>2""'* >22 ~ NNN ' 2 "N " N "~ 2 /N/'~N&N/N"NNNN//'~NNNN/ ~'.2 '~ N~ NN N /~ NN "N "N' N NN " /N~ N~ >2 K "N "N 'NN "N NN " '. N 'N '~ N~ V~ N N N/ N~ '~ ~' '~ ""N NN NN K "N "'N "'N>2 '> NN "'N " " " ~/ NN NN ~ "N N/ NN ~ ~ /NN'>N~ 'N" |
