Hand sanding block with a cuboid shape

Abstract

Hand sanding block (1) with a cuboid shape, having two opposite working sides (2, 4), two opposite mounting surfaces (6) for an abrasive (8) and two end faces (13), wherein one working side (2) has a flat working surface (3) and the other working side (4) has a recess (5) which can be spanned with an abrasive (8).

Description

[0001] The invention relates to a hand-held sanding block with a cuboid shape.

[0002] For grinding surfaces and for breaking or rounding the edges of workpieces, especially those made of wood, grinding discs or sheets with an abrasive grinding surface are often used, which are usually attached to a hand sanding block for better handling, often having a simple cuboid shape or at least a flat working surface.

[0003] EP 0 904 897 B1 discloses a set for use with grinding wheels or similar grinding sheets with an abrasive side and a non-abrasive side. A main block has an upper section that serves as a handle for the user and a bottom that forms a connecting surface to one of the wheels or to one of several matching blocks. Each of these blocks has a first connecting surface that corresponds to the connecting surface of the main block and a second connecting surface that forms a connecting surface to the non-abrasive side of one of the wheels. The second connecting surfaces of the matching blocks have different curved shapes to allow grinding of differently shaped surfaces.Furthermore, grinding blocks are described which are intended for use with or similar grinding discs with a grinding side and a non-abrasive side, wherein the grinding blocks have a curved coupling surface which defines a coupling surface with the non-abrasive side of one of the said discs.

[0004] The invention is based on the objective of creating a hand-held grinding block of the type mentioned above, which can be used in a variety of ways for machining a workpiece.

[0005] According to the invention, the problem is solved by the features of the independent claim.

[0006] The hand sanding block has a cuboid shape with two opposing working sides, two opposing mounting surfaces for an abrasive, and two end faces, one working side having a flat working surface and the other working side having a recess that can be spanned with an abrasive.

[0007] The abrasive material, such as sandpaper, abrasive cloth, abrasive fabric, sanding belt, or a sanding disc, can be attached to the mounting surfaces using adhesive tape, thumbtacks, staples, hook-and-loop fasteners, or similar fasteners. The hand sanding block, for example, is monolithic and made of a relatively hard material, such as plastic or wood. With the hand sanding block, it is possible to sand individual edges of a workpiece without damaging the adjacent surfaces. In particular, if the abrasive is stretched under tension across the recess (which contains no fasteners), it is possible to sand a small radius on the workpiece edge. If the abrasive is stretched over the flat working surface of the hand sanding block, then it is possible to sand a completely flat surface of the workpiece.

[0008] In this embodiment, the recess on the other machining surface has a concave or V-shape that extends centrally between the mounting surfaces from one end face to the opposite end face. Using the concave recess, radii on opposite sides of a suitably dimensioned workpiece can be ground with an abrasive in contact with the machining surfaces, and defined chamfers on edges can be ground using the V-shaped recess. This is particularly advantageous in an embodiment where the recess, with an abrasive present, provides two machining surfaces oriented at an angle to each other. Thus, the simultaneous machining of two opposite edges of a workpiece is possible.

[0009] Preferably, the fastening surfaces are equipped with clamping elements or hook-and-loop fasteners. The arrangement or presence of hook-and-loop fasteners allows, for example, the use of commercially available sanding discs for disc sanders, which typically have looped sides. Other flat, detachable fastening elements can also be used without departing from the scope of the invention.

[0010] In this design, the grinding disc spanning one or the other processing surface is attached to the hook and loop fasteners of the mounting surfaces in a replaceable manner, as an abrasive with a grinding side and a loop surface as a mounting side.

[0011] It is understood that the features mentioned above and those to be explained below can be used not only in the combinations specified, but also in other combinations. The scope of the invention is defined solely by the claims.

[0012] The invention will be explained in more detail below using an exemplary embodiment with reference to the associated drawing.

[0013] It shows: Fig. 1 a side view of a hand sanding block according to the invention, Fig. 2 a representation of the hand grinding block according to Fig. 1 with an abrasive in a first machining position, Fig. 3 a representation of the hand grinding block according to Fig. 1 with the abrasive in a second processing position Fig. 4 a representation of the hand grinding block according to Fig. 1 with the abrasive in a third processing position and Fig. 5 another side view of the hand sanding block Fig. 1.

[0014] The hand sanding block 1 according to the Fig. 1 and Fig. 5 is essentially cuboid-shaped, in particular with a rectangular first working side 2, which has a flat working surface 3, and with a second working side 4 opposite the first working side 2, having a recess 5 that extends longitudinally between two end faces 13 of the hand sanding block 1. Furthermore, two opposing mounting surfaces 6 extending between the working sides 2 and 4 are provided, which are equipped with a hook-and-loop fastener 7, adhesive tape, or similar fastening means for the detachable attachment of an abrasive 8. The hook-and-loop fasteners 7 can, for example, be glued onto the mounting surfaces 6. The recess 5 on the second working side 4 is V-shaped.

[0015] After Fig. 2 The abrasive 8 spans the recess 5. In this operating position, depending on the tension and elasticity of the abrasive 8, a relatively small radius can be machined onto an edge 9 of a workpiece 10 without machining the adjacent surfaces 11 of the workpiece 10 with the abrasive 8.

[0016] According to Fig. 3 the abrasive 8 lies in the recess 5, so that two angularly aligned machining surfaces 12 are provided by the abrasive 8 lying against the V-legs, which enables the simultaneous machining of two opposite edges 9 of a workpiece 10, naturally depending on its dimensions.

[0017] Accordingly Fig. 4 spans the abrasive 8 over the machining side 3 with the flat machining surface 3 in order to machine a flat surface of a workpiece 10. Reference sign 1 hand sanding block 2 Edit page 3 flat processing surfaces 4 Edit page 5 In-depth study 6 Mounting surface 7 Velcro straps 8. Abrasives 9 edge 10 workpieces 11 Area 12 processing area 13 Front surface QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] EP 0 904 897 B1

[0003]

Claims

[1] Hand grinding block (1) with a cuboid shape having two opposite working sides (2, 4), two opposite mounting surfaces (6) for an abrasive (8) and two end faces (13), wherein one working side (2) has a flat working surface (3) and the other working side (4) has a recess (5) which can be spanned by an abrasive (8). [2] Hand sanding block (1) according to claim 1, characterized by , that the recess (5) of the other machining side (4) has a concave shape or V-shape and extends centrally between the fastening surfaces (6) from one end face to the opposite end face. [3] Hand sanding block (1) according to claim 2, characterized by , that the recess (5) provides two machining surfaces (12) oriented at an angle to each other when abrasive (8) is present in the recess (5). [4] Hand sanding block (1) according to claim 1, characterized bythat the fastening surfaces (6) are equipped with clamping devices or adhesive tapes or hook and loop fasteners (7). [5] Hand sanding block (1) according to any one of claims 1 to 4, characterized by , that the grinding disc (8) spanning one or the other processing surface (3, 6) is interchangeably attached to the hook and loop fasteners (7) of the fastening surfaces (6), which is abrasive and has a grinding side and a loop surface as a fastening side.

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