DE69823127T2 - Sanding block set and sanding blocks for machining differently shaped surfaces - Google Patents

Description

technical Area

The The present invention relates to a set of sanding blocks which suitable for variously designed surfaces to treat. Schmirgelpapapierblätter or sanding discs are used to add surfaces grind, and in particular, the bodywork parts of cars to grind. These discs or sandpaper sheets must be with Help suitable abrasive carrier hereinafter referred to as "blocks" to which they are coupled are.

These clogs are mechanically resistant Parts that carry the emery paper sheet or discs.

A Interlayer of a special material, which under the Name "Velcro" (registered trademark) is known, serves to the emery paper sheet or the disc to connect with a log. The Velcro material consists of two Scroll, which coupled by mutual juxtaposition and then again easily solved can be. In practice, a Velcro sheet and especially provided with Kunststoffhäkchen Leaf on the floor surface of the log, while the other sheet, which is made of a soft material, to stick to said check mark is suitable on the non-abrasive side of the emery wheel is brought.

The floor area the already known sanding blocks, which is the active area the blocks during the Has a flat shape. That's why not the conventional blocks suitable for that it handles curvilinear and / or differently designed surfaces become. Furthermore can the shape of the floor area of these blocks not changed when the shape of the area to be treated changes.

The German Patent No. 1,090,993 describes a device for finishing and polishing surfaces, which is a part that acts as a handle for the user, and includes a perforated part which contains a polishing material, the with the side walls the handle is connected and covers the lower surface of the handle.

Presentation of the invention

The The invention relates to a set comprising a main block, as Handle for the user, and includes multiple passports, which have different active surfaces Have shape so that they can be used to to treat curvilinear and / or differently shaped surfaces. The passports have a first coupling surface, which of the floor area of the main block corresponds, and a second coupling surface, which can be designed differently and with the not sanding Side of a sanding disc can be coupled.

Short description of drawings

Further Advantages are given in the following description and in the appendix attached Drawings obviously, than not the general inventive idea restrictive Examples are given are and where:

1 shows from above a perspective view of a possible embodiment of the set according to the invention, in which a main block and a plurality of fitting blocks are present;

2a and 2 B show a sanding block that does not fall within the scope of the invention.

In the drawings, the reference numeral designates 1 the main block, and the numbers 2a . 2 B . 2c . 2d . 2e designate five fitting blocks of the grinding block set.

Detailed description the invention

The main block 1 consists of a body, which is preferably made of a synthetic resin and an upper part 3 which is anatomically designed so that it serves as a grip for the user during the grinding. The grip is through several furrows 4 , which set an anatomically shaped support for resting on the main block parts of the user's hand, made more comfortable.

The main block 1 has a bottom part 5 which have a shape and / or a fairing which enable it to be connected to both a fitting block and an emery wheel using a "Velcro" layer 6 of the main block 1 in one part 5 similar manner.

The main block can be used separately (without any fitting block attached to it). In this case, a sanding disc is directly on the main block 1 appropriate. The emery wheel closes with the front and rear outline of the surface 5 of the main block, while those parts of the disc, over the lateral outline of the bottom surface 5 protrude to the semi-circular surfaces 6 of the main block 1 can be attached.

As already mentioned, the present sentence comprises five passports 2a - 2e whose number and shape are changeable. Each pass pad has a coupling surface 7 (the bottom surface in the drawings) on which the bottom surface 5 of the main block 1 corresponds and can be connected to this. Each pass pad also has an active area 8th (the top in the drawings) which is intended to be connected to the non-abrasive side of an emery wheel.

In a corresponding manner, a fitting block can be connected to a main block by connecting the coupling surfaces 7 and 5 Just bring them together so that the non-abrasive side of a disk touches the active surface 8th of the passblock is created and sticks to this.

On this way it is possible with a sanding disc both a curvilinear and a flat surface to treat.

For example, the fitting pads of the drawings have active surfaces 8th which have various curvilinear shapes that allow both convex and concave surfaces to be treated with different radii of curvature.

The passports 2a . 2 B from 1 have concave active surfaces 8th and side surfaces 9 on, which can be connected to the non-abrasive side of a sanding disc. In particular, the passport block 2a that has a slightly concave active surface 8th suitable to treat slightly convex surfaces, and the fitting block 2 B , which has a fairly strong convex active surface 8th is suitable to treat strongly concave surfaces.

Similarly, the passports can 2c - 2e be used to treat variously shaped surfaces depending on their radius of curvature.

In the 2a and 2 B are sanding blocks 1' represented, which is an upper part 3 ' similar to the top 3 of the already described main block 1 and curvilinear coupling surfaces 8th' similar to the already described second coupling surfaces 8th said passport blocks 2a - 2e exhibit.

In this case, the upper part and the coupling surface have no sharp edges, and the lateral coupling surfaces 6 ' of the main block are designed so that they can be coupled to the side portions of the non-abrasive side of an emery wheel, which may be beyond the lateral contour of the floor surface 8th' of the log 1' protrude, with the mentioned sanding blocks 1' not falling within the scope of the present invention.

Advantageously, the coupling surfaces 5 . 6 . 8th' the blocks 1 . 1' and the coupling surfaces 8th the passport blocks 2a - 2e suitable to be coupled to sanding discs, which are already known in the market, have a diameter of 150 mm and are provided with a coupling surface, which are covered with a soft velcro layer.

The The present invention is with reference to preferred embodiments at any rate, it is obvious that equivalent changes can be made without departing from the scope of the invention.

Claims (9)

Sanding block set, in particular for use with sanding discs or similar abrasive sheets, having a sanding side and a non-sanding side, characterized in that it consists of a main block ( 1 ) and a number of pass blocks ( 2A - 2E ), the main block ( 1 ) a top ( 3 ), which serves as a handle for the user, and a bottom surface ( 5 ), which has a coupling surface with one of said disks or with one of the number of fitting blocks ( 2a - 2e ), each of them having a first coupling surface ( 7 ), which of said coupling surface ( 5 ) of the main block ( 1 ), as well as a second coupling surface ( 8th ) defining a coupling surface with the non-abrasive side of one of said disks, the second coupling surfaces of said fitting pads having different curvilinear shapes suitable for grinding the variously shaped surfaces to be machined. Set according to claim 1, characterized in that said second coupling surfaces ( 8th ) are concave. Set according to claim 1, characterized in that said second coupling surfaces ( 8th ) are convex. Set according to claim 1, characterized in that said bottom surface ( 5 ) and said first coupling surfaces are flat. Set according to claim 1, characterized in that said upper part ( 3 ) of the main block ( 1 ) is rounded. Set according to claim 1, characterized in that said upper part ( 3 ) of the main block ( 1 ) a number of furrows ( 4 ), since with it anatomically designed for a grip. Set according to claim 1, characterized in that the coupling surfaces ( 7 ) of the said passport blocks are provided with at least one layer of material which is suitable with the bottom surface ( 5 ) of said main block ( 1 ) and be separated from it again. Set according to claim 1, characterized in that said main block ( 1 ) Side surfaces ( 6 ), which are adapted to be coupled to the lateral part of the non-abrasive side of a disk resting on the block ( 1 ) and the lateral contour of its bottom surface ( 5 ) surmounted. Set according to claim 1, characterized in that said fitting blocks have side surfaces ( 9 ) which are adapted to be coupled to the lateral part of the non-abrasive side of a disk which is fixed to the second coupling surface ( 8th ) of a pass pad and which projects beyond its lateral outline.