Patent ID: 8104373
Filing Date: 2012-01-31
Classification: B60T,F16C,F16D,Y10T

Abstract:
1. A cable-type driving force transmission mechanism comprising: an electric actuator including a housing attached to a support member, an electric motor attached at the housing, a conversion mechanism, which is provided within the housing and converts a rotational driving force of the electric motor into a linear driving force, and a driving member, which is linearly driven by the linear driving force generated by converting the rotational driving force of the electric motor into the linear driving force by the conversion mechanism and which includes first and second end pin attachment holes; a cable provided between the electric actuator and an actuation member for transmitting a driving force of the electric actuator to the actuation member via the cable and including an inner wire, which is detachably connected to the driving member at a first end portion of the inner wire and which is connected to the actuation member at a second end portion of the inner wire, and an outer tube, which covers an outer circumference of the inner wire except for both end portions thereof and which is detachably and immovably attached to an outer tube attachment portion, provided at the housing at an end portion of the outer tube at a housing side and is immovably attached to a retaining member for retaining the actuation member at an end portion of the outer tube at an actuation member side; a cable end pin formed in a T-shape and fixed at the first end portion of the inner wire, the cable end pin including a shaft portion extending in a wire longitudinal direction and first and second arm portions, each of which outwardly protrudes from an end portion of the shaft portion for a predetermined amount in a radial direction thereof; and a first plate spring fixed at the driving member and including first and second engagement pieces for rotating the cable end pin in a positive direction by substantially 90 degrees with the shaft portion with an axis while the first and second engagement pieces elastically deform and engage with different side surfaces of the first and second arm portions when the first and second arm portions of the cable end pin is inserted and attached between the first and second end pin attachment holes of the driving member and for restricting an inverse direction of the cable end pin by returning to an initial position after the cable end pin is rotated in the positive direction, wherein each of the first and second end pin attachment holes includes a rotation allowing hole portion for allowing a rotation of each arm portion and a deformation allowing hole portion for allowing an elastic deformation of each engagement piece of the first plate spring when the cable end pin is rotated in the positive direction with the shaft portion thereof as the axis, and wherein the first end portion of the inner wire is connected to the driving member via the cable end pin and the end portion of the outer tube at the housing side is attachable relative to the outer tube attachment portion, provided at the housing, from an outside of the housing.