An
equalizer device for a
parking brake, in which paired engagement portions, with which paired output members coupled to
brake devices of right and left wheels are respectively engaged, are formed so as to be symmetric with respect to an input portion, and which actuates the
brake devices by pulling the paired output members, comprises: an
equalizer body that is formed by connecting paired side plates, which extend parallel to each other from a back plate so as to form a U-shape; and a
synthetic resin member that is fixedly arranged inside the
equalizer body, wherein the equalizer body has paired engagement holes that are formed in the back plate, and that allow
coupling members that couples the output members to the
brake devices to extend outside the equalizer body and prevent the output members from passing through the engagement holes, paired
insertion holes which are formed in a first side plate, and paired slits which are formed to connect each of the
insertion holes to each of the engagement holes respectively, portions of the back plate, at which the engagement holes are formed, serving as the engagement portions, the
synthetic resin member having a substantially flat plate shape that is arranged so as to face a portion of an inner face of the first side plate and comprising paired gate portions that are formed so as to partially block the respective paired
insertion holes, that are elastically deformed to allow insertion of the output members into the equalizer body, and that return to their original form to prevent the output members from
coming out of the equalizer body through the insertion holes, and an engagement lug that extends on an outer side of an outer edge of the first side plate and extends beyond an outer face of the first side plate, and is engaged with the outer face, and the
synthetic resin member is fitted to the equalizer body by the engagement lug.