Hand-guided electrically-powered tool with handle

Abstract

A hand-guided and operated electrically-powered hand tool, in particular a belt sander or the like, is comprised of a working tool part (2) projecting from a housing for the working of a workpiece. The housing (1) has on the side facing away from the working tool part (2) a handle (4) for guiding the tool. Planar surfaces on bearing surfaces (5) arranged on the handle provide for stable bearing of the electrically-powered hand tool in a change position. In the change-position, there is no contact between the working tool part and the workpiece, so that uncomplicated replacement of the tool part is possible.

Description

BACKGROUND OF THE INVENTION

[0001] The invention relates to a hand-guided and operated electrically-powered tool, in particular a belt sander or the like, with a tool extending from a housing for working a workpiece, whereby the housing has at least one handle on the side of the housing opposite the workpiece.

[0002] Hand-guided electrically-powered tools of the above type are used especially for small jobs. By virtue of a compact construction, this type of electrically powered tool is easy to transport and is versatile in its applications. On the one hand, the housing provides for protection and on the other hand provides for enhanced ease in the handling of the electrically-powered tool. A motor-driven tool projects from the housing and thus allows the user to work on a workpiece, for example a wooden board. The handle is provided for guiding the electrically-powered tool, especially the tool part itself. Said handle is arranged on the housing, on the side opposite the working tool itself. In this fashion, it is possible for the operator to guide the electrically-powered hand tool easily and safely. Furthermore, the handle facilitates application of pressure by the operator on the tool and so, for example, to control or to interrupt the work process. In addition, the handle facilitates positioning of the electrically-powered hand tool by the operator.

[0003] The disadvantage in known electrically-powered hand tools is the fact that the electrically-powered hand tool must be held by the operator with at least one hand when changing the working tool part. Frequently, however, both hands are needed when manipulating the electrically-powered hand tool, for example, in order to change the working tool part. In such cases, the operator must make use of special accessory means such as, for example, special bases or supports.

SUMMARY OF THE INVENTION

[0004] The object of the present invention is to provide a hand-guided electrically-powered hand tool that facilitates the manipulation of a mounted working tool part.

[0005] According to the invention, the object is achieved in that the handle has at least one essentially planar support surface for a stable bearing of the electrically-powered hand tool in a position that excludes contact of the tool part with the workpiece.

[0006] By virtue of the fact that the handle has at least one planar support surface upon which the hand tool is supported, the operator is provided with the opportunity of easy access to the working tool part, without the use of accessory means. The stable bearing is particularly important in order to prevent the electrically-powered hand tool from tipping out of its position. In order to provide problem-free manipulation of the working tool part, for example, tool exchange or adjustment of same, there is no contact in the support position between the working tool part and the workpiece.

[0007] Preferably, the handle has a plurality of bearing surfaces, all of which are arranged in the same plane, in order to assure the secure bearing of the electrically-powered hand toll even in the case of larger magnitude external forces. Furthermore, in this fashion the secure bearing of the hand tool is also provided in the case of the electrically-powered hand tool from which the tool part has been removed. In contrast with a single bearing surface, the preferred embodiment provides the advantage, in that the shape of the housing, in particular the handle, is less restricted. In the case of only one bearing, the gravity vector running through the center of gravity of the electrically-powered hand toll borne in such position must assure a stable bearing.

[0008] Advantageously, the handle has two bearing surfaces. In this fashion, a secure bearing and compact construction of the housing is made possible. If the working tool part should represent a relatively high proportion of the weight of the overall weight, then the handle is advantageously provided with three bearing surfaces.

[0009] In the preferred fashion, the bearing surfaces are arranged essentially parallel to the working surface of the tool part in order to achieve optimum weight distribution and thus a stable bearing of the electrically-powered hand tool in its position. Moreover, in such position the operator is provided with optimal access to the tool part.

[0010] Advantageously, the handle is at least partly comprised of an elastic material so that on the one hand the electrically-powered hand tool in such position does not slip and on the other hand minor irregularities in the surface are evened out by the bearing surface.

[0011] The handle is preferably at least partly made of rubber in order to assure that the electrically-powered hand tool can be manufactured economically.

BRIEF DESCRIPTION OF THE DRAWING

[0012] The invention is more fully explained below using an illustrative embodiment. The drawing shows that:

[0013] FIG. 1 is a side view of an electrically-powered hand tool according to the invention in a working position; and

[0014] FIG. 2 is similar to FIG. 1 with the electrically-powered hand tool inverted and supported upon a bearing surface.

DETAILED DESCRIPTION OF THE INVENTION

[0015] In FIGS. 1 and 2 a manually guided and operated electrically-powered hand tool, in particular a belt sander, accordingly, the invention is illustrated and includes a working tool part 2 projecting from a housing 1 for working of a workpiece 6. For guiding the belt sander, the housing 1 has, arranged on the side opposite working tool part 2, a handle 4. The working tool part 2, in particular abrasive paper, is removably fastened by means of clips 7 to a motor-driven vibrating plate 8.

[0016] The handle 4 comprises a switch element 9 for switching on and switching off a motor (not shown in the figures). In a working position, as illustrated in FIG. 1, the tool is in contact with a surface 10 of the workpiece 6 that is to be worked

[0017] The handle 4 has two bearing surfaces 5 on the side opposite to that of the working tool part. The two bearing surfaces 5 are arranged essentially in the same plane E, whereby the inventive belt sander can be stably supported in a position in which the tool part 2 is not in contact with the surface 10 of the workpiece 6, as can be seen particularly in FIG. 2. In such position, the operator can operate the two clips 7, for example, to replace the working tool part 2, in particular the abrasive paper. In order to even out any eventual unevenness in the support plane E, the handle is comprised partly of an elastic material, in particular rubber.

Claims

1. A manually operated electrically-powered hand tool, such as a belt sander and the like, comprising a housing (1) with a first surface for mounting a working tool part (2) having a working surface for operating on a workpiece and a second surface directly opposite said working surface, at least one handle (4) on said second surface, said handle has at least one substantially planar bearing surface for stably supporting said hand tool with said working surface of said work tool part (2) out of contact with the workpiece.

2. A manually operated electrically-powered hand tool, as set forth in claim 1, wherein the said handle (4) has a plurality of bearing surfaces (5), with all of said bearing surfaces located in the same plane.

3. A manually operated electrically-powered hand tool, as set forth in claim 2, wherein said handle (4) has two bearing surfaces (5).

4. A manually operated electrically-powered hand tool, as set forth in claim 2, wherein said bearing surfaces (5) are arranged substantially parallel to the working surface of said working tool part (2).

5. A manually operated electrically-powered hand tool, as set forth in claim 1, wherein said handle (4) is comprised at least in part of an elastic material.

6. A manually operated electrically-powered hand tool, as set forth in claim 5, wherein said handle (4) is comprised at least in part of rubber.