Hand tool

摘要

A hand tool has a tool shaft, an inner sliding sleeve, an engagement module, and an outer sliding sleeve. The inner sliding sleeve is mounted around the tool shaft and is selectively engaged with the tool shaft. The engagement module has a spring mounted around the inner sliding sleeve. The outer sliding sleeve is mounted around the inner sliding sleeve, abuts the spring and selectively engaged with the inner sliding sleeve. The hand tool is applied for connecting with an inner polygonal bolt or an outer polygonal bolt.

主权项

1. A hand tool having:
a tool shaft having a working segment having a square outer cross section; and an engaging recess formed in the working segment; an engagement unit recess recessed in the working segment; and an engagement unit mounted in the engagement unit recess and protruding from the engagement unit recess; an inner sliding sleeve slidably mounted around the working segment, selectively positioned relative to the working segment, and having a square inner cross section that matches the outer cross section of the working segment; an engaging hole formed through the inner sliding sleeve and selectively aligned with the engaging recess; and an engaging ball moveably mounted in the engaging hole; and four slits longitudinally recessed in an inner wall of the inner sliding sleeve and respectively located at four sides of the inner wall of the inner sliding sleeve; an engagement module mounted around the inner sliding sleeve and having a first ring mounted around the inner sliding sleeve; and a second ring mounted around the inner sliding sleeve; and a spring mounted around the inner sliding sleeve and abutting the first ring; and an outer sliding sleeve slidably mounted around the inner sliding sleeve and having an inner wall formed inside the outer sliding sleeve; an abutting block annularly formed on the inner wall of the outer sliding sleeve; a pressing surface formed on a side of the abutting block facing the inner sliding sleeve, and selectively pressing the engaging ball; and a stopping surface formed in an end of the abutting block and abutting an end of the spring at a position opposite to the first ring; and an abutting surface formed in another end of the abutting block at a position opposite to the stopping surface and selectively abutting the second ring.