Hand-held drive-in power tool

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings show:

FIG. 1 a longitudinal cross-sectional view of a drive-in power tool according to the present invention;

FIG. 2 a longitudinal cross-sectional view of the drive-in power tool shown in FIG. 1 in an actuated position;

FIG. 3 a plan view of a spring segment of the driving spring member according to line III-III in FIG. 2; and

FIG. 4 a side view of the spring segment shown in FIG. 3.

1. A hand-held drive-in power tool for driving in fastening elements, comprising a drive-in ram (13); a guide (12) in which the drive-in ram (13) is displaceably arranged; a drive (30) for driving the drive-in ram (13) and having at least one driving spring member (31) for displacing the drive-in ram (13) and formed of a fiber-reinforced plastic material; and a device (70) for preloading the driving spring member (31).
2. A drive-in power tool according to claim 1, wherein the plastic material of the at least one driving spring member (31) contains fibers selected from a group consisting of glass fibers, carbon fibers, aramide fibers, steel fibers and ceramic fibers.
3. A drive-in power tool according to claim 1, wherein the plastic material of the driving spring member (31) is a matrix of at least one of a thermoplastic material and a duroplastic material selected from a group consisting of a polyamide, polyetherketone, polyester, polycarbonate, polyester resin, and epoxy resin.
4. A drive-in power tool according to claim 1, wherein fibers constitute from 1 to 60% by volume of the plastic material.
5. A drive-in power tool according to claim 1, wherein the driving spring member (31) is formed of a plurality of spring segments (32).
6. A drive-in power tool according to claim 5, wherein the spring segments (32) are wave-shaped and are formed of a plastic flat material.

Number	Date	Country	Kind
10 2006 000 139.7	Mar 2006	DE	national