Patent ID: 7168644

Claim:
A jaw crusher comprising: a fixed jaw; a swing jaw which swings relative to the fixed jaw; a reaction force receiver mechanism comprising: (i) a toggle plate that is angled upward toward the swing jaw and includes a first end that contacts the swing jaw, and (ii) a toggle plate support member that contacts a second end of the toggle plate; and a toggle plate holder mechanism which comprises: (i) a link member that holds the toggle plate between the swing jaw and the toggle plate support member, and (ii) a biasing portion which is coupled to the toggle plate support member and which biases the swing jaw and the toggle plate support member to the toggle plate; wherein the reaction force receiver mechanism comprises an outlet clearance adjustment mechanism which moves the swing jaw with respect to the fixed jaw to adjust an outlet clearance between the jaws by adjusting a position of the toggle plate support member and the toggle plate; wherein the link member comprises a tension link including a first end coupled to the swing jaw, and the toggle plate holder mechanism further comprises: a tension lever supporting a second end of the tension link; a tension rod having an end attached to the tension lever; and a tension spring which biases the tension rod in an axial direction of the tension rod, said biasing portion comprising the tension spring; and wherein swing centers at two sides of the tension link are positioned in a vicinity of swing centers at two sides of the toggle plate.