Structure of multi-functional hand tool

An improved structure of multi-functional hand tool comprising a chuck, a positioning sleeve, a pushing axle rod, a pipe body and an external sleeve, wherein,

• said chuck is provided with slits, the front end thereof has a conical surface, the rear end thereof has an internal thread;
• said positioning sleeve has therein a central axle hole of which the front end is provided with a conical surface, a stop round plate is provided on the rear end of said positioning sleeve, and a plurality of bearings are mounted on said positioning sleeve;
• said pushing axle rod is provided on the front end thereof with a front threaded rod section, and on the rear end thereof with a rear threaded rod section which is mounted thereon by threading connection a driving rod, said pushing axle rod is provided thereon at a position near the rear portion thereof with a round flange, a spring is slipped over said pushing axle rod;
• said pipe body is provided on the front end thereof with an inner thread for locking therein an external thread on a front cover, said pipe body is provided on the rear end thereof with an inner thread for locking therein a pushing member, and said pipe body is provided on the surface thereof with a position limiting slot and a recess which is placed therein a bead and an elastic piece;
• said pushing member is a hollow pipe, and is provided on the front end thereof with a cylinder portion, on a rear enlarged threaded portion thereof with a hole and on the rear surface thereof with a slit;
• said external sleeve is provided on the outer surface thereof with an inner screw hole, a positioning screw rod is screwed and locked in said inner screw hole;
• with the above stated members, said chuck and said pushing axle rod are inserted into said central axle hole of said positioning sleeve, then said front threaded rod section of said pushing axle rod is screwed in said internal thread of said chuck with said spring slipped over said pushing axle rod and between said round flange and said stop round plate on the rear end of said positioning sleeve, said rear threaded rod section on the rear end of said pushing axle rod is screw connected with said driving rod;
• after said bearings are slipped over said positioning sleeve, said positioning sleeve, pushing axle rod and chuck are together placed in said pipe body, said positioning sleeve is rotatable in said bearings, said external thread on said front cover is locked in said inner thread on the front end of said pipe body, said chuck is extended out of said front cover, said pushing member is screwed and locked in said inner thread of said pipe body to render said cylinder portion of said pushing member to abut against the rear surface of said round flange on said pushing axle rod, said hole on said rear enlarged threaded portion of said pushing member is exactly located at said position limiting slot of said pipe body, said external sleeve then is slipped over said pipe body from the rear end of the latter, and said inner screw hole of said external sleeve is aligned with said position limiting slot of said pipe body, then said positioning screw rod is screwed and locked in said inner screw hole to extend through said position limiting slot and said hole of said pushing member, said hand tool thus is completed.