Self-tightening chuck with a radial lock

摘要

A drill chuck including a spindle portion with a pusher bore, a spindle bore, an annular array of teeth, and an annular groove defined by the outer surface of the first end. A body is rotatably disposed about the spindle portion and includes a central bore, an annular groove defined by the central bore, and a pawl pivotably mounted to the body for selectively engaging the annular array of teeth. A jaw pusher includes a threaded post and a head, the threaded post being disposed in the pusher bore and configured for axial motion. A jaw guide is disposed on the first end of the body and includes a plurality of jaw slots. A plurality of jaws is slidably received in the corresponding jaw slots and slidably received by the head of the jaw pusher. A plurality of bearing balls is received between the annular groove of the spindle portion and the annular groove of the body. The annular groove of the spindle portion and the annular groove of the body form a continuous pair of bearing races for the plurality of bearing balls.

主权项

1. A drill chuck for use with a powered driver, comprising:
a spindle portion including a pusher bore on a first end, a spindle bore on a second end, and an annular array of teeth disposed about its outer surface; a body rotatably disposed about the spindle portion, the body including a central bore for receiving the spindle portion, and a pawl including an engagement end, the pawl being pivotably mounted to the body, the pawl being configured to selectively engage the annular array of teeth on the spindle portion; a spring disposed on the body, the spring biasing the engagement end of the pawl radially inwardly and extending along substantially an entire circumference of the body; a jaw pusher including a threaded post and a head, the threaded post being rotatably disposed in the pusher bore of the spindle portion; and a plurality of jaws, each jaw being slidably received by the head of the jaw pusher.