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Mechanism for detecting load

  • US 4,585,083 A
  • Filed: 10/23/1984
  • Issued: 04/29/1986
  • Est. Priority Date: 11/01/1983
  • Status: Expired due to Fees
First Claim
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1. A mechanism for detecting a load comprisingmeans including a load shaft member extending in a first direction in which a load to be detected is exerted;

  • andmeans including at least one double link mechanism which comprisesa common link member extending substantially in parallel with said load shaft member,first and second arm members each of which extends in a second direction substantially perpendicular to said first direction, the ends of said first arm member being connected to one end of said load shaft member and one end of said common link member, respectively, and the ends of said second arm member being connected to opposite ends of said load shaft member and common link member, respectively,third and fourth arm members extending substantially in parallel with said first and second arm members, respectively, one end of said third and fourth arm members being connected to said ends of said common link member, respectively, and the opposite ends of said third and fourth arm members being connected to a fixed member positioned near said load shaft member,fifth and sixth arm members having one end of each connected to said ends of said common link member, respectively, and the opposite ends of each connected to a fixed member near said load shaft member,said first, third and fifth arm members and said second, fourth and sixth arm members being postioned in first and second planes, respectively, said first and second planes being perpendicular to a plane including said first and second directions, whereby said first and second arm members extend between said third and fifth arm members and between said fourth and sixth arm members, respectively,flexure members formed in each of said arm members at said ends thereof, whereby said first and second arm members and common link member form a first parallelogram link mechanism, said third and fourth arm members and common link member form a second parallelogram link mechanism having substantially the same dimension as that of the first parallelogram link mechanism, and said fifth and sixth arm members and common link member form a third parallelogram link mechanism having substantially the same dimension as that of the first parallelogram link mechanism.

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