ROTATIONAL SPEED REDUCTION DEVICE FOR TRUCK TAILGATE

PROBLEM TO BE SOLVED: To provide a rotational speed reduction device for a truck tailgate, which: can suppress a rapid rotation in an opening direction of a tailgate of a truck to allow the tailgate to be opened to an opening position at a constant speed, can provide a low resistance torque regardin...

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Bibliographische Detailangaben
Hauptverfasser:	KANEKO RYOHEI, HOTTA HISAHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS MOTOR VEHICLES PERFORMING OPERATIONS TRAILERS TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a rotational speed reduction device for a truck tailgate, which: can suppress a rapid rotation in an opening direction of a tailgate of a truck to allow the tailgate to be opened to an opening position at a constant speed, can provide a low resistance torque regarding a rotation in a closing direction of the tailgate of the truck; is allowed to be formed in a small size; and is easy to use.SOLUTION: The rotational speed reduction device 1 for a tailgate of a truck includes: a housing 5; a rotational body 8 disposed in the housing 5; a viscous fluid 14a stored in an internal space 13a; paths 15a, 16a formed in the rotational body 8; a one-way valve 19 disposed in the path 15a; and a one-way valve 20a disposed in the path 16a.