Patent ID: 9731406
Date: 2017-08-15
CPC Classifications: B25B

Claim:
1. A socket assembly comprising: an outer socket; an inner socket mounted in the outer socket; and an intermediate socket mounted in the outer socket; wherein: the outer socket has a first end provided with a tool connector and a second end provided with a workpiece connector; the workpiece connector has an interior provided with a receiving chamber; the receiving chamber has a periphery provided with a plurality of drive blocks and a plurality of retaining grooves arranged between the drive blocks; the inner socket is mounted in the receiving chamber of the outer socket and includes a first base, a plurality of first driving sections provided on the first base, and a plurality of first openings defined between the first driving sections; a first elastic member is mounted in the receiving chamber of the outer socket and is biased between the first base and the outer socket; the first base is formed with a first shaft hole; each of the first driving sections has a face provided with a mounting recess mounted on one of the drive blocks of the outer socket; the intermediate socket is mounted in the receiving chamber of the outer socket and includes a second base, a plurality of second driving sections provided on the second base, and a plurality of second openings defined between the second driving sections; the second base of the intermediate socket abuts the first base of the inner socket; and a second elastic member is mounted in the receiving chamber of the outer socket and is biased between the second base and the outer socket; wherein the socket assembly further comprises a shaft extending through the intermediate socket and the inner socket and secured in the outer socket to limit the intermediate socket and the inner socket in the outer socket; wherein the second base is formed with a second shaft hole, the shaft is mounted in the receiving chamber of the outer socket includes a hollow shank having a first end provided with a bore and a head formed on a second end of the shank, the shank extends through the second shaft hole of the intermediate socket and the first shaft hole of the inner socket, the head has an outer diameter greater than an inner diameter of the second shaft hole of the intermediate socket and abuts the second base of the intermediate socket to limit the intermediate socket and the inner socket in the outer socket, the outer socket has a periphery provided with an aperture connected to the receiving chamber, and a mandrel extends through the aperture of the outer socket and the bore of the shaft so that the shaft is secured in the receiving chamber of the outer socket.