Sealing device

Abstract

A sealing device (1) formed by combining an inner peripheral sealing member (2) and an outer peripheral sealing member (3), where the inner peripheral sealing member (2) such as a slinger member is prevented from falling out in axially one direction from the outer peripheral sealing member (3) such as a lip seal member. The inner peripheral sealing member (2) has a metal ring (4) provided with a tubular section (4a) and a radially rising section (4b) integrally formed with the tubular section (4a) and extending radially outward from one end of the tubular section (4a). The outer peripheral sealing member (3) has side lips (7e, 7f) in slidable intimate contact with the radially rising section (4b) of the metal ring (4), and also has a radial lip (7g) provided without contact, on the outer peripheral side of the tubular section (4a) of the metal ring (4). The tubular section (4a) has an axial fall-out prevention section (8) having an outer diameter d 2 greater than the inner diameter d 1 of the radial lip (7g) and preventing the metal ring (4) from falling out in axially one direction from the outer peripheral sealing member (3).

Description

technical field [0001] The invention relates to a sealing device related to sealing technology. The sealing device of the present invention can be used as a wheel hub bearing seal in the fields related to automobiles or in general machinery and the like. Background technique [0002] Conventionally, a sealing device 51 shown in FIG. 4 is known. The sealing device 51 consists of an oil flinger member (inner peripheral side) mounted on an inner peripheral mounting member (such as an inner ring) 61 of one of two relatively rotating members (such as an inner ring and an outer ring of a bearing) 61,62. seal) 52 and a lip seal member (outer peripheral side seal) 53 attached to an outer peripheral mounting member (for example, an outer ring) 62 as the other side. [0003] The oil slinger member 52 is made of metal material, and on one axial end of the cylindrical portion 52a, an annular radially raised portion 52b is integrally formed to form a substantially L-shaped cross sectio...

AI Technical Summary

Problems solved by technology

[0005] However, when the sealing lip is formed as described above by the first side lip 55a which is in close contact with the inner side end surface of the radially raised portion 52b of the oil slinger member 52 slidably, slidably with the same slinger When the second side lip 55d in close contact with the inner end surface of the radially raised portion 52b of the oil ring member 52 and the radial lip 55c arranged so as not to contact the outer periphery of the cylindrical portion 52a of the oil slinger member 52 are combined , neither lip has the necessary radial interference for holding the oil slinger member 52, therefore, when the sealing device 51 is transported or installed, the oil slinger member 52 may be removed from the lip seal member. 53 falls off to one side of the axial direction (direction C in the figure)

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