A concealed hinge system (1) for a door or window, the door or window comprising a fixed frame (100) defining an opening and a movable leaf (200) closing the opening, each of the fixed frame and the movable leaf being formed from a profile (101, 201) having at least one peripheral channel (102, 202), the hinge system comprising: a first body (2), the first main body (2) can be fixedly connected in a peripheral channel (102) of a profile (101) of the fixed frame (100); the second main body (3) can be fixedly connected in a peripheral channel (202) of a sectional material (201) of the movable blade fan (200); and a lever assembly (4) that articulates the first body (2) and the second body (3) to each other; the lever assembly (4) comprises: a first lever (5) having a first end (5a) rotatably hinged to the first body (2) about a first axis of rotation (A1) fixed relative to the first body (2), a second end (5b) rotatably hinged to the second body (3) about a second axis of rotation (A2) fixed relative to the second body (3), and an intermediate portion (5c) between the first end (5a) and the second end (5b); a second rod (6) having a first end (6a) hinged to the first body (2), a second end (6b) rotatably hinged to one end of the second body (3) about a third axis of rotation (A3), and an intermediate portion (6c) interposed between the first end (6a) and the second end (6b); said first rod (5) and said second rod (6) are rotatably hinged to each other about a fourth axis of rotation (A4), corresponding to their intermediate portions (5c, 6c); the second, third and fourth axes of rotation are parallel with respect to the first axis of rotation (A1); wherein the first end (6a) of the second rod (6) is hinged to the first body (2) by means of kinematic pairs (7, 8) which effect a relative rotational and translational movement of the first end (6a) of the second rod (6) relative to the first body (2) about a fifth axis of rotation (A5) parallel to the first axis of rotation (A1) and along a trajectory (T), respectively, the trajectory (T) extends towards the first axis of rotation (A1) and, for at least a portion, is tangent to or coincides with at least one rectilinear direction (R) included in a plane perpendicular to the first axis of rotation (A1), where the at least one rectilinear direction (R) is incident with respect to a plane (PA) defined by the opening.

一种用于门或窗的隐藏式铰链系统(1)，所述门或窗包括限定开口的固定框架(100)和封闭所述开口的可移动叶扇(200)，所述固定框架和可移动叶扇中的每一个由具有至少一个周边通道(102，202)的型材(101，201)形成，所述铰链系统包括：第一主体(2)，所述第一主体(2)可以固定地连接于所述固定框架(100)的型材(101)的周边通道(102)中；第二主体(3)，所述第二主体(3)可以固定地连接于所述可移动叶扇(200)的型材(201)的周边通道(202)中；以及杆组件(4)，所述杆组件(4)将所述第一主体(2)和所述第二主体(3)彼此铰接；所述杆组件(4)包括：第一杆(5)，所述第一杆(5)具有围绕相对于所述第一主体(2)固定的第一旋转轴线(A1)可旋转地铰接至所述第一主体(2)的第一端(5a)，围绕相对于所述第二主体(3)固定的第二旋转轴线(A2)可旋转地铰接至所述第二主体(3)的第二端(5b)，以及介于所述第一端(5a)与所述第二端(5b)之间的中间部分(5c)；第二杆(6)，所述第二杆(6)具有铰接至所述第一主体(2)的第一端(6a)，围绕第三旋转轴线(A3)可旋转地铰接至所述第二主体(3)的一端的第二端(6b)，以及介于所述第一端(6a)与所述第二端(6b)之间的中间部分(6c)；所述第一杆(5)和所述第二杆(6)对应于它们的中间部分(5c，6c)围绕第四旋转轴线(A4)可旋转地彼此铰接；所述第二、第三和第四旋转轴线相对于所述第一旋转轴线(A1)平行；其中所述第二杆(6)的所述第一端(6a)通过运动副(7，8)铰接至所述第一主体(2)，所述运动副(7，8)实现所述第二杆(6)的所述第一端(6a)相对于所述第一主体(2)分别围绕平行于所述第一旋转轴线(A1)的第五旋转轴线(A5)以及沿着轨迹(T)的旋转和平移相对运动，所述轨迹(T)朝向所述第一旋转轴线(A1)延伸，并且对于至少一部分，所述轨迹(T)与包含于垂直于所述第一旋转轴线(A1)的平面中的至少一个直线方向(R)相切或重合，其中所述至少一个直线方向(R)相对于由所述开口限定的平面(PA)入射。