Manual adjustable tensioning device

• US 10,533,595 B2
• Filed: 10/30/2017
• Issued: 01/14/2020
• Est. Priority Date: 08/27/2017
• Status: Active Grant

• Current Assignee: Citic Dicastal Co. Ltd (CITIC Corp. Ltd.)
• Original Assignee: Citic Dicastal Co. Ltd (CITIC Corp. Ltd.)
• Inventors: Zhou, Ruixiao, Luo, Fengbao, Liu, Xiao, Li, Dengyao, Liu, Weidong, Liu, Minghua
• Primary Examiner(s): Estremsky, Gary W
• Application Number:
  US15/797,474
• Publication Number:
  US 20190040898A1
• Time in Patent Office: 806 Days
• Field of Search: 411 145
• CPC Class Codes: F16B 31/04 for maintaining a tensile load
• CPC Class Codes: F16B 39/028 by means of an auxiliary bolt or threaded element whose action provokes the deformation of the main bolt or nut and thereby its blocking

Abstract

Disclosed is a manual adjustable tensioning device. Slope guide slots are formed in the periphery of a lead screw nut, and contacts are provided with slopes having the same angles and placed in the guide slots of the lead screw nut; two ends of a lead screw are respectively supported in threaded holes of a shell and an end cover; screws are connected to the lead screw nut via threaded holes, the tail end of each screw is in contact with one end of a lever, the other end of the lever is in contact with the slope of the lead screw nut, a roller is mounted at the tail end of the lever, and an extension spring is mounted at the end of the slope of the lead screw nut.

Claims

1. A manual adjustable tensioning device, comprising a handle, a lead screw, a lead screw nut, contacts, force sensors, screws, levers, rollers, springs, a shell and an end cover, wherein slope guide slots are formed in the periphery of the lead screw nut, and the contacts are provided with slopes having the same angles and placed in the guide slots of the lead screw nut;

two ends of the lead screw are respectively supported in threaded holes of the shell and the end cover;

the screws are connected to the lead screw nut via threaded holes, the tail end of each screw is in contact with one end of the lever, the other end of the lever is in contact with the slope of the lead screw nut, a roller is mounted at the tail end of the lever, and an extension spring is mounted at the end of the slope of the lead screw nut.