Patent ID: 9662528
Date: 2017-05-30
CPC Classifications: A63B

Claim:
1. A torsion bar comprising, a housing having a receiving space extending from a first end of the housing to a second end of the housing along an axial direction, two opposite fixing grooves defined in a sidewall of the first end of the housing and communicating with the receiving space, and a plurality of stripes positioned on an outer surface thereof; and an inner core received in the receiving space, the inner core comprising two opposite fixing elements corresponding to the fixing grooves, a first end of the inner core is adjacent to the fixing elements, and a second end of the inner core is apart from the fixing elements along the axial direction, each of the fixing elements including a plurality of first protruding portions located at a side end thereof to facilitate a user to disengage the inner core from the housing, and a plurality of second protruding portions located at a surface thereof adjacent to the side end to prevent the inner core from disengaging accidently from the housing, wherein the inner core and the fixing elements are integral; wherein a cross-section of the receiving space is similar to a cross-section of the inner core; wherein the inner core is inserted into the receiving space via the second end of the inner core and extended from the first end of the housing to the second end of the housing until each of the fixing elements is inserted into a corresponding fixing groove and the first end of the inner core is in line with the first end of the housing.