FASTENING UNIT

摘要

A fastening unit includes a body having a driving end and a connection end. The driving end has a driving recess for receiving a nut therein, and the connection end has an engaging recess for being connected with a driving portion of a ratchet wrench. The driving recess has a first slot and a second slot respectively defined in the inside thereof, and the first and second slot extend along the X-axis of the body. An annular groove is defined in the inner periphery of the inner end of the driving recess. A resilient member has a spiral and cylindrical portion. The resilient member has an extension end and a protrusion protrudes laterally from the extension end so that the protrusion applies a resilient force along the Y-axis of the body. The fastening unit firmly position the nut therein.

主权项

1. A fastening unit comprising:
a body having a driving end and a connection end respectively on two ends thereof, the driving end having a driving recess defined therein which is adapted to receive a nut therein, the connection end having an engaging recess defined therein which is adapted to be connected with a driving portion of a ratchet wrench, the driving recess having a first slot defined in an inside thereof and the first slot extending along an X-axis of the body, an annular groove defined in an inner periphery of an inner end of the driving recess, a second slot defied in the inside of the driving recess and the second slot extending along the X-axis of the body, and a resilient member having a spiral and cylindrical portion, the resilient member having an extension end and a protrusion protruding laterally from the extension end so that the extension end is a resilient end, the protrusion applying a resilient force along a Y-axis of the body.