US 6,648,768 B1Granted

Swing assembly with a seat back adjustable between a horizontal position and an inclined position

AssigneeShin Yeh Enterprise Co., Ltd.

InventorChuen-Jong Tseng

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Abstract

A swing assembly includes a swing frame unit disposed swingably on a support unit, and a seat unit connected to the swing frame unit by means of a pair of left and right linkage units. The seat unit includes a seat and a back that is rotatable relative to the swing frame unit between a horizontal position and an inclined position when the seat is disposed at a horizontal position.

Claims10

Dependent claims

A swing assembly comprising:

a support unit;
a swing frame unit disposed swingably on said support unit and including a pair of spaced-apart left and right side frames, and a pair of spaced-apart front and rear abutment rods disposed between and interconnecting fixedly said left and right side frames, said swing frame unit being turnable forwardly and rearwardly relative to said support unit;
a pair of left and right linkage units disposed respectively on said left and right side frames of said swing frame unit, each of said left and right linkage units including
a fixing piece mounted fixedly on a corresponding one of said left and right side frames and having a front end and a rear end,
a front link having a first end and a second end that is, connected pivotally to said front end of said fixing piece,
a rear link having a first end and a second end that is connected pivotally to said rear end of said fixing piece,
an intermediate link having a front end connected pivotally to said front link at a position between said first and second ends of said front link, and a rear end connected pivotally to said rear link at a position between said first and second ends of said rear link,
a seat-coupling piece connected pivotally to said first end of said front link,
a back-coupling piece connected pivotally to said first end of said rear link, and
a coiled tension spring having two ends that are fastened respectively to said front link and said rear end of said fixing piece so as to bias said first end of said front link to turn rearwardly;
a seat unit including a seat that is connected fixedly to said seat-coupling piece and that has a rear side and a back that is connected fixedly to said back-coupling piece and that has a front side which is adjacent to said rear side of said seat, and a rear side which is rotatable about said front side of said back, said back being rotatable between a horizontal position, where said rear side of said back abuts against said rear abutment rod of said swing frame unit and where said tension springs of said left and right linkage units are at stretched states, and an inclined position, where said seat and said back define an angle of 90° to 180° therebetween and where said tension springs are at relaxed states.

8 more elements

Dependencies are inferred from the claim text.

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Abstract

A swing assembly comprising:

a support unit;
a swing frame unit disposed swingably on said support unit and including a pair of spaced-apart left and right side frames, and a pair of spaced-apart front and rear abutment rods disposed between and interconnecting fixedly said left and right side frames, said swing frame unit being turnable forwardly and rearwardly relative to said support unit;
a pair of left and right linkage units disposed respectively on said left and right side frames of said swing frame unit, each of said left and right linkage units including
a fixing piece mounted fixedly on a corresponding one of said left and right side frames and having a front end and a rear end,
a front link having a first end and a second end that is, connected pivotally to said front end of said fixing piece,
a rear link having a first end and a second end that is connected pivotally to said rear end of said fixing piece,
an intermediate link having a front end connected pivotally to said front link at a position between said first and second ends of said front link, and a rear end connected pivotally to said rear link at a position between said first and second ends of said rear link,
a seat-coupling piece connected pivotally to said first end of said front link,
a back-coupling piece connected pivotally to said first end of said rear link, and
a coiled tension spring having two ends that are fastened respectively to said front link and said rear end of said fixing piece so as to bias said first end of said front link to turn rearwardly;
a seat unit including a seat that is connected fixedly to said seat-coupling piece and that has a rear side and a back that is connected fixedly to said back-coupling piece and that has a front side which is adjacent to said rear side of said seat, and a rear side which is rotatable about said front side of said back, said back being rotatable between a horizontal position, where said rear side of said back abuts against said rear abutment rod of said swing frame unit and where said tension springs of said left and right linkage units are at stretched states, and an inclined position, where said seat and said back define an angle of 90° to 180° therebetween and where said tension springs are at relaxed states.

8 more elements