| 摘要 |
The invention relates to an improved, two-piece pressure plate assembly for a spring brake actuator. The two-piece pressure plate assembly includes a plate (68) and a separate connector (102) secured to the plate (68). The plate is, in the preferred embodiment, a stamped steel disk with a central opening (120) surrounded by an upturned collar (124). The connector (102), in the preferred embodiment, includes a generally cylindrical body (106) with a longitudinal shaft having a keyed opening and internal lands for receiving a caging bolt in a bayonet-style engagement. The exterior of the connector has some structure to aid in securing the connector to the plate, a portion of which will bear against one side of the plate (68) when the connector (102) is inserted in the central opening (120) of the plate (68). The connector (102) can be further secured to the plate (68) by being press fit into the opening (120), staked to the plate, or by embossments in the collar engaging the structure on the exterior of the connector (102).
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