Patent ID: 6401837
Filing Date: 2002-06-11
Classification: B25F

Abstract:
A multipurpose combination tool, comprising:a main body portion (1) including an electric motor (4) with an output shaft (10); a tool head portion (8) including a transmission assembly (11); and a locking mechanism (5) for coupling the main body portion (1) with the tool head portion (8), the locking mechanism (5) including: an external spline (15) fixed on the output shaft (10) of the electric motor (4) and provided with guide faces (20); an internal spline (14) connected to the transmission assembly (11) and provided with guide faces (21); a locking piece (12) having a wedge-shaped face (16), the locking piece (12) being located at the outer side of the external spline (15); a locking thrust ring (6) connected to the housing (2) of the main body portion (1) and being coupled with the locking piece; a locking head (13) located at the outer side of the internal spline (14) on the housing (9) of tool head portion (8), the locking head (13) having bosses at an end portion thereof with a wedging slot (19) being formed between the bosses (18) and the housing (9) of tool head portion (8); wherein the external spline (15) can be releasably inserted into the internal spline (14), and the wedge-shaped face (16) on the locking piece (12) can be releasably inserted into the wedging slot (19) to thereby releasably connect the tool head portion (8) to the main body portion (1) with the transmission assembly (11) operatively connected to the electric motor (4).