Patent ID: 7870796
Filing Date: 2011-01-18
Classification: G01L,Y10T

Abstract:
1. A load sensor comprising: a detection element configured to detect at least compression load; a structural member including a first member, a second member, and a preload adjusting member; and a buffer member in contact with a contact portion of the detection element, wherein the contact portion is formed from ceramic; the buffer member is formed from stainless steel; the second member is formed from carbon steel; the first member has a surface provided with the detection element, the first member and the second member are connected with each other and configured to transmit load to the detection element, the preload adjusting member is substantially in a column shape having a non-threaded outer surface and has a tip end configured to apply compression load to the detection element, the second member has a fitted portion, which has a non-threaded inner surface press-fitted with the non-threaded outer surface of the preload adjusting member, the second member is configured to elastically deform to cause a change in preload applied to the detection element in response to adjustment of press-fitting of the preload adjusting member; and the entire non-threaded outer surface of the preload adjusting member being in direct surface contact with the non-threaded inner surface of the fitted portion of the second member to cause friction there between and apply preload to the detection element.