Hinge device

A hinge device, comprising a first hinge leaf (1), a second hinge leaf (2), and a rotating shaft (3), the first hinge leaf (1) being provided with first shaft sleeves (11), the second hinge leaf (2) being provided with second shaft sleeves (21), and both the first shaft sleeves (11) and the second shaft sleeves (21) being sleeved on the rotating shaft (3), wherein the hinge device further comprises flanged bearings (4), each of the flanged bearings (4) comprises a bearing body (41) and a housing (42), the bearing body (41) is disposed in the housing (42), the housing (42) is further provided with a connecting portion (421), the connecting portions (421) are fixedly connected to either the first shaft sleeves (11) or the second shaft sleeves (21), and both the bearing bodies (41) and the connecting portions (421) are sleeved on the rotating shaft (3);

• wherein the hinge device comprises a plurality of flanged bearings (4), each of the flanged bearings (4) is connected to the corresponding first shaft sleeve (11) or the corresponding second shaft sleeve (21), and the first shaft sleeves (11) and the second shaft sleeves (21) abut against each other by the flanged bearings (4);
• and
• the flanged bearings (4) are integrally formed with the first shaft sleeves (11) or the flanged bearings (4) is integrally formed with the second shaft sleeves (21);
• and
• wherein the connecting portions (421) are embedded into the first shaft sleeves (11) or the second shaft sleeves (21), so as to be fixedly connected to the first shaft sleeves (11) or the second shaft sleeves (21);
• wherein each of the bearing bodies (41) comprises an upper cover plate (411), a lower cover plate (412), and a plurality of steel balls (413), the upper cover plate (411) and the lower cover plate (412) are arranged opposite to each other, a first groove (414) is formed in one surface of the upper cover plate (411) facing the lower cover plate (412), a second groove (415) is formed in one surface of the lower cover plate (412) facing the upper cover plate (411), and the plurality of steel balls (413) are disposed between the upper cover plate (411) and the lower cover plate (412), and roll along the first groove (414) and the second groove (415);
• wherein the outer diameter of the connecting portions (421) gradually decreases along an embedding direction of the connecting portions (421);
• wherein the upper cover plate (411) is disposed on one side in the housing (42) away from the connecting portion (421), the housing (42) semi-wraps the upper cover plate (411), and a top surface of the upper cover plate (411) is higher than a top surface of the housing (42).