DE202008018186U1 - Sharpener for sharpening blades, especially razor blades - Google Patents

Abstract

Sharpener for sharpening razor blades (24, 26) on multi-blade heads (22), with a holder (12; 12b) on which a sharpening element (16; 16a; 16b; 16c) is received, in which the sharpening element (16; 16a; 16b; 16c) has an outwardly protruding rounding (18; 18a; 18b; 18c) with a radius (R) between 0.2 and 0.7 mm.

Description

The invention relates to a sharpener for sharpening razor blades on multi-blade heads, with a holder on which a sharpening element is received.

A sharpener for sharpening knives and the like is from the US 2006/0194529 A1 and from the US Pat. No. 3,861,087 known.

The known sharpeners are suitable for sharpening knives, tools or the like.

On the other hand, razors with multi-bladed heads have become more and more popular in recent years.

To sharpen such razor blades, so far no easy to handle sharpeners have become known.

The invention is therefore an object of the invention to provide a sharpener for sharpening razor blades, which is simple and allows effective sharpening of razor blades in multi-blade heads.

This object is achieved by a sharpener for sharpening razor blades on multi-blade heads, with a holder on which a sharpening element is added, which has an outwardly projecting curve with a radius between 0.2 and 0.7 mm.

The object of the invention is completely solved in this way.

According to the invention, a sharpening element is used which is specially adapted to the shape of multi-blade razors. Since the sharpening element has a rounding with a radius between 0.2 and 0.7 mm, this can be individually guided along each razor blade of a Mehrklachenrasierers to sharpen them. It is sufficient to drive with the tip of the sharpening element at least once on each razor blade, preferably several times.

Even with razor heads that have three or more blades, individual removal of each blade is possible.

Preferably, the sharpening element tapers at an angle of 5 ° to 30 °, in particular with 5 ° to 20 ° to the rounding.

Because of this particular dimensioning of the angle of 5 ° to 30 ° or of 5 ° to 20 °, the sharpener is particularly suitable for sharpening razor blades on multi-blade heads.

According to a further embodiment of the invention, the rounding is formed at the end of a rotationally symmetrical section. This may be approximately cylindrical, conical or barrel-shaped.

According to an alternative embodiment of the invention, the rounding is formed at the end of a broad tip with mutually running side surfaces.

Be all of these versions is an effective sharpening of razor blades, especially in Mehrklingenrasierern possible. The rounding can hereby be rounded on all sides in the form of a cylindrical, conical or barrel-shaped section.

The sharpening element can be formed according to a further embodiment of the invention at the end of a rod.

Thus, the rod can also take over the holder function for the sharpening element.

The rod can, for example, a cylindrical. have rectangular or polyhedral cross-section.

According to a further alternative of the invention, the sharpening element is exchangeably received on the holder.

In this way, a holder for different sharpening elements can be used or a sharpening element can be replaced after damage or wear if necessary.

According to a further embodiment of the invention, the sharpening element has an axial length of at most 20 mm, preferably of at most 15 mm, more preferably of at most 10 mm, particularly preferably of at most 8 mm.

Furthermore, the axial length of the sharpening element is preferably at least 1 mm, more preferably at least 3 mm, more preferably at least 5 mm.

Finally, according to a further embodiment of the invention, a protective cap can be provided which is removably received on the sharpening element.

In this way, the sensitive due to its possible small dimensions sharpening element is protected against damage from the outside.

The sharpening element is preferably made of ceramic, such as an alumina-based ceramic, but may in principle be made of stone or metal with an abrasive coating z. B. of diamond, boron carbide or titanium carbide.

This ensures effective sharpening.

It is understood that the features of the invention mentioned above and those yet to be explained below can be used not only in the particular combination indicated, but also in other combinations or in isolation, without departing from the scope of the present invention.

Further features and advantages of the invention will become apparent from the following description of preferred embodiments with reference to the drawings. Show it:

1 a perspective view of a sharpener according to the invention in conjunction with a razor, which has a two-blade head;

2 a partial view of another embodiment of a sharpener according to the invention;

3 a partial view of another embodiment of a sharpener according to the invention;

4 a partial view of another embodiment of a sharpener according to the invention;

5 a perspective view of a protective cap, which can be placed on the end of a sharpener to protect the sharpening element;

6 a partial perspective view of another embodiment of a not included in the invention sharpener and

7 a partial perspective view of another not embraced by the invention embodiment of a sharpener.

In 1 a first embodiment of a sharpener according to the invention is shown together with a razor in an application position.

The total with 10 designated sharpener has a cylindrical holder 12 in which a ceramic rod 14 is interchangeable added. The ceramic rod 14 consists of alumina ceramic and is in a cylindrical recess (not shown) of the holder 12 pluggable recorded. The cylindrical ceramic rod 14 has at its outer end a so integrally formed sharpening element 16 on, that of the cylindrical ceramic rod 14 from conical to a rounding 18 tapers. The rounding 18 For example, has a radius of curvature of 0.5 mm, while the cone is formed with a point angle of, for example, 40 °.

A conventional wet shaver 20 is with a handle part 21 represented, at the outer end of a razor head 22 is exchangeably attached. The razor head 22 has two blades 24 . 26 on, in a known manner with a certain distance from each other running parallel in the razor head 22 are held.

The sharpener according to the invention 10 Now with one hand on the holder 12 while holding the other hand the razor 20 at his grip 21 holds. The sharpener 10 will now be in the direction of the arrow 28 from one end of a respective blade 24 respectively. 26 pulled through to the other end to pull off the blade and sharpen it.

Due to the special geometry and in particular the special design of the rounding 18 it is possible here, the sharpening element 16 each along one of the blades 24 . 26 without affecting the other blade.

In 5 is a protective cap 30 shown on the outer end of the ceramic rod 14 Can be placed to the rounding 18 to protect against damage from outside during transport.

Both the holder 12 as well as the protective cap 30 are preferably made of plastic.

Modified embodiments of the sharpener according to the invention are described below with reference to the 2 to 4 explained in more detail.

In 2 is a cylindrical ceramic rod 14a represented, on whose outer end face an integrally connected thereto sharpening element 16a is trained. The sharpening element 16a runs cone-shaped to its rounding 18a towards. The entire length L of the sharpening element 16a is here for example about 10 mm, but can basically move in a range between 1 and 20 mm.

The rounding 18a has a radius R, which can basically be between 0.1 and 2 mm and in the illustrated case, for example, 0.5 mm.

The sharpening element 16a has a cone tip angle α, which may for example be between 5 and 30 °, in the case shown here is about 20 °.

In 3 is a further embodiment of a not included in the invention sharpener in total with 10b designated. The sharpening part 16b is here designed as a rectangular ceramic plate whose outer edge with a rounding 18b is provided. For holding the sharpening element 16b serves a holder 12b , which in turn preferably consists of plastic. Preferably, the sharpening part 16b replaceable.

Another variant of a sharpener according to the invention is in 4 represented and in total with 10c designated. The sharpening element 16c is at the outer end of a cylindrical ceramic rod 14c educated. In contrast to the execution according to 1 is the ceramic rod 14c but on both sides with mutually running flat side surfaces 34c executed in a common rounding 18c leak.

If desired, the ceramic rod can also be used 14c even be used as a holder or handle.

In 6 is another embodiment of a not included in the invention sharpener in total with 10d designated.

Shown here is only the sharpening element 16d in the form of a small plate, which tapers towards the end in a triangular point. The point angle is preferably between 20 ° and 80 °, more preferably between 30 ° and 60 °.

In the area of its tip is the sharpening element 16d through two side surfaces 34d limited. When sharpening the razor blades 24 . 26 a multi-blade head, preferably with one of the two side surfaces 34d deducted.

The sharpening element 16d is, as before about on hand of 3 described, suitably received on a holder.

In 7 is another variant of a total not included in the invention sharpening 10e designated.

Here are at the end of a slide several sharpening elements 16e arranged in the form of triangular peaks, so that overall results in a sawtooth-shaped course. The side surfaces 34e the sharpening elements 16e are used for removing razor blades on multi-blade heads, which can be removed in one operation. The wafer is in turn suitably received on a holder (not shown).

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 2006/0194529 A1 [0002]
• US 3861087 [0002]

Claims (15)

Sharpener for sharpening razor blades ( 24 . 26 ) on multi-blade heads ( 22 ), with a holder ( 12 ; 12b ), to which a sharpening element ( 16 ; 16a ; 16b ; 16c ), in which the sharpening element ( 16 ; 16a ; 16b ; 16c ) an outwardly protruding rounding ( 18 ; 18a ; 18b ; 18c ) having a radius (R) between 0.2 and 0.7 mm. A sharpener according to claim 1, wherein the rounding ( 18 ; 18a ; 18b ; 18c ) at the end of a rotationally symmetric section ( 16 ; 16a ; 16b ) is trained. A sharpener according to claim 2, wherein the rotationally symmetric section ( 16 ; 16a ; 16b ) is cylindrical, conical or barrel-shaped. A sharpener according to claim 1, wherein the rounding ( 18c ) at the end of a broad peak with side surfaces ( 34 ) is trained. A sharpener according to claim 1, wherein the rounding ( 18b ) on the edge of a small plate ( 16b ) is trained. Sharpener according to one of the preceding claims, in which the sharpening element ( 16 ; 16a ; 16b ; 16c ) has an axial length (L) of at most 20 mm, preferably of at most 15 mm, more preferably of at most 10 mm, particularly preferably of at most 8 mm. Sharpener according to one of the preceding claims, in which the sharpening element ( 16 ; 16a ; 16b ; 16c ) has an axial length (L) of at least 1 mm, preferably of at least 3 mm, more preferably of at least 5 mm. Sharpener according to one of the preceding claims, in which the sharpening element ( 16 ; 16a . 16b ; 16c ) with an angle of 5 ° to 30 ° to the rounding ( 18a ; 18c ) tapers. Sharpener according to one of the preceding claims, in which the sharpening element ( 16 ; 16a . 16b ; 16c ) with an angle of 5 ° to 20 ° to the rounding ( 18a ; 18c ) tapers. Sharpener according to one of the preceding claims, in which the sharpening element ( 16 ; 16a ; 16c ) at the end of a rod ( 14 ; 14a ; 14c ) is trained. A sharpener according to claim 10, wherein the rod ( 14 ; 14a ; 14c ) has a cylindrical, rectangular or polyhedral cross-section. A sharpener according to any one of claims 10 to 11, wherein the rod ( 14c ) is designed as a holder. Sharpener according to one of Claims 1 to 12, in which the sharpening element ( 16 ; 16b ) on the holder ( 12 ; 12b ) is interchangeable recorded. Sharpener according to one of the preceding claims, with a protective cap ( 30 ), which can be removed on the sharpening element ( 16 ; 16a ; 16b ; 16c ; 16d ; 16e ) is recorded. Sharpener according to one of the preceding claims, in which the sharpening element ( 16 ; 16a ; 16b ; 16c ; 16d ; 16e ) made of ceramics, in particular an aluminum oxide-based ceramics, or of a metal with an abrasive coating.

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