ES2989697T3 - Razor with pivoting head and interchangeable blades - Google Patents

Abstract

1. A razor (1) with a handle (2) and a head (3) pivotally connected to the handle (2), the head (3) having a frame (7) and a cover (15), and at least one razor blade (13) having a cutting edge and mounted between the frame (7) and the cover (15), the at least one razor blade (13) being interchangeably mounted between the frame (7) and the cover (15), the at least one razor blade (13) being insertable between the frame (7) and the cover (15) by means of operable fastening means (16, 17, 18, 19), the fastening means (16, 17, 18, 19) being arranged close to the lateral edges of the at least one razor blade (13) with respect to the cutting edges of the at least one razor blade (13). (Automatic translation with Google Translate, without legal value)

Description

DESCRIPTION

Razor with pivoting head and interchangeable blades

The invention relates to a razor with a pivoting head and interchangeable blades according to claim 1.

Razors have become ubiquitous and are used by people of different genders for their personal shaving needs.

Double-edge razors have been around for a long time. Disposing of blades after a limited number of uses became popular and economical with the introduction of blades made of thin, inexpensive steel, eliminating the need to remove or re-shave them. The safety feature of these razors, which protects the user from everything except the edge of the blade, appealed to the user. The orientation of the handle and blade required the user to develop the correct technique to achieve an optimal shave. Disposable razors use small, thin blades that are only exposed at the edge; they have a pivoting head that conforms to some extent to the contours of the body area being shaved. However, the disposable razor is only designed for short-term use because disposable blades are designed as disposable products and have a limited lifespan.

Alternatively, there are razors with double-edged blades. Many of today's razors use a double-edged blade and clamp the blade to the razor head to keep it in place. Typically, one edge of the blade is exposed on either side of the razor head. However, many of these razors do not include a pivoting head, requiring the user to hold the razor and blade at a specific angle to the area of the body being shaved in order to achieve a proper shave. This can result in a lengthy process that does not always provide the detailed shave desired.

Razors with replaceable blades are already known from US Pat. No. 841 942 A and US Pat. No. 9,56532 A. A razor with a handle and a head pivotally connected to the handle is described in WO 2016/081795 A1, the head having a frame and a cover pivotally connected to the frame and at least one razor blade separator arranged between the frame and the head cover.

It is also known from WO 2016/081795 A1, in particular from section [0040] of the description, to provide two "half blades" or two halves of a double-edged razor blade by splitting double-edged razor blades in half. Each half may contain one razor blade. The "half blades" can also be provided in this initial form without having to split a double-edged razor blade in half. By using the "half blades" in the head of a razor, a razor can provide a multiple razor blade configuration for shaving a person's face. It is also known from this document that certain "half blades" can be designed and configured to fit individually within the frame and head cover of a razor.

The aim of the invention is to create a razor having at least one easily replaceable razor blade and utilizing the advantages of modern shaving technology.

According to the invention, this object is achieved as set forth in claim 1. In particular, the task is solved by a razor with a handle and a head rotatably attached to the handle. The head has a frame and a cover. The razor includes at least one razor blade having a cutting edge and mounted between the frame and the cover. The at least one razor blade is interchangeably stored between the frame and the cover. The at least one razor blade can be inserted between the frame and the cover by means of operable offset fastening means. The fastening means can pass through eccentric recesses located in the at least one razor blade. The at least one razor blade can be connected to the frame and the cover by means of the fastening means.

According to the invention, at least two fixing means are provided which are fixed symmetrically off-centre and therefore close to the lateral edges of at least one razor blade. The symmetrically off-centre arrangement of the fixing means allows a geometry of the head including a central cavity at its upper edge.

Preferably, several razor blades are used in the razor head according to the invention. The razor blades are preferably half blades, as is known, for example, from WO 2016/081795 A1.

They are preferably guided through V-shaped protrusions located on the back of the razor blades, i.e. on the longitudinal edge opposite the cutting edge.

They are therefore placed very close to the edge of at least one razor blade, without widening the razor and without occupying its central area, which remains free to perform all necessary movements.

for shaving with the razor while shaving. The arrangement of the fastening means close to the cutting edges allows the blades to be held securely to the edge in general, but especially at the front of their cutting edges.

The symmetrical, off-centre arrangement of the attachment means allows for a head geometry that guarantees very good accessibility to problematic areas to be shaved, in particular due to the strong central cavity at its upper edge. This geometry is particularly advantageous for using the razor in the area between the upper lip and the lower edge of the nose. The same applies to other anatomically difficult-to-reach areas and problematic areas that need to be shaved. In any case, the position of the attachment means ensures that skin injuries are avoided while ensuring good accessibility to all areas of the skin to be shaved.

The lock means that the razor blade or blades can be easily replaced. The locking devices can be unlocked or released from the head.

Removing the fastening means exposes at least one razor blade and spacer plates arranged between the razor blades or between a razor blade and the cover or between a razor blade and the frame. The spacer plates can be reused if at least one razor blade needs to be replaced because it has become dull.

Preferably, the razor only produces pure metal waste that can be recycled. This way, plastic waste can be avoided, as only the metal razor blades need to be removed, which can easily be recycled as scrap metal.

Compared to standard and sometimes market-leading systems such as replacement heads or disposable razors made of composite materials, the amount of waste can be significantly reduced by using the razor according to the invention.

In this way, the environment is greatly relieved and finite resources are conserved.

If at least two razor blades are arranged in the razor head, a small distance between the edges of the at least two razor blades is decisive for a close and at the same time gentle, safe and injury-free shave.

If at least two razor blades are preferably used, they are spaced apart from each other by means of intermediate plates located between them.

A small distance, for example less than 1 mm, preferably greater than 0.3 mm, results on the one hand from the distance between the blades, which is defined by spacer plates located between the razor blades, and on the other hand from the rearward displacement of the upper razor blade in relation to the cutting edge of the underlying razor blade.

The rearward offset position of the upper blades relative to the lower blade is defined according to the invention by the contact of the razor blades on the front and/or rear bevels which are fixed to the frame and/or the cover. The angle of the bevels can be between 10° and 60°, depending on the base area of the frame. Instead of a slope, steps can be provided on the frame and/or the cover, on which the razor blades and spacer plates are placed. The contact slopes can also be formed by other elements, such as screws.

The chamfers define the horizontal and vertical position of the spacer plates.

In a preferred embodiment, the spacer plates are designed such that in their rear area, i.e. on the side opposite the cutting edges of the razor blades, above the upper edge of the razor blades, passages are created which allow hair, skin flakes, shaving foam and water removed during shaving to flow backwards. This makes it easier to keep the shaving head clean.

By placing the head in front of the handle, a mobile support is guaranteed, in particular rotating and/or elastic, which allows the head to follow the contour of the area to be shaved and thus allows a smooth and safe shave.

The releasable locking mechanism utilizing the two fastening means is provided on the razor head and is configured to hold the frame and cover together. The releasable locking mechanism may include knurled nuts, each mounted on a threaded shaft.

An embodiment of the invention is advantageous in which the two fixing means each comprise a threaded pin firmly attached to the frame or the cover, on which there is a nut, preferably a knurled nut, with which the frame and the cover are fixed to those between the razor blades and the spacer plates located there.

The fastening means clamp the cover or frame vertically or at an angle deviating from the vertical by up to 40° onto the frame or cover. The vertical is defined in each case by the surface of at least one razor blade.

According to one embodiment of the invention, set screws are provided as fixing means which are fixedly attached to a knurled wheel and are screwed into the cover to fasten the frame to the cover or are screwed into the sea.

Advantageous improvements can be found in the dependent claims and in the description, especially in relation to the fixings.

The handle preferably has an ergonomic design, similar to an S-shape, which prevents unwanted twisting during shaving.

The handle, frame, cover and nuts are made entirely of metal and are, for example, a die-cast component made of zinc, or at least partly made of a plastic, for example polypropylene. A design according to which the handle is made, for example, of metal on its upper part and plastic on its lower part is also advantageous. In this case, it is possible to adjust the lower part of the handle to the position of the shaver's fingers.

In any case, using a razor that can be easily disassembled and removed by loosening the knurled nut allows metal razor blades to be changed quickly and easily.

Preferably, the razor head is inherently elastic; furthermore, the razor head can also be mounted movably, in particular rotatably and/or elastically relative to the handle.

Also advantageous is an embodiment of the invention in which the head is mounted relative to a cylinder fixed to the handle by means of an element that can move together with the head.

Preferably, the element is mounted relative to the cylinder by means of a spring.

It is also advantageous that the head is connected via the frame with two handle extension elements.

According to another advantageous configuration, the movable element and the cylinder are arranged between the extension elements.

Preferably, the head is movable, in particular rotatable, and/or is elastically connected to the extension elements by means of pins or screws.

The invention is explained in more detail below by means of an exemplary embodiment with the aid of figures. It is shown:

Figure 1 is an isometric view of a razor from above.

Figure 2 is an isometric view of the razor from below.

Figure 3 is an isometric view of the razor in the area of its head,

Figure 4 is a side view of the razor in the head area,

Figure 5 is a side view of the razor.

Figures 6, 7 additional isometric views of the razor in the area of his head,

Figure 8 shows a longitudinal section through the razor along an axis I - 1 of Figure 1.

Figure 9 is a sectional view of the razor head, cut along the longitudinal axis of a fixing screw (enlarged compared to the view in Figure 8).

Figure 10 is an exploded view of the individual components of the razor.

Figure 11 is a top view of the razor head without cover and

Figures 12 to 14 are sectional views of the head in the longitudinal direction of the razor handle.

A razor 1 (Figures 1 to 14) comprises a handle part or a handle 2 and a head or shaving head 3, which is preferably designed as an oscillating head.

The handle 2 comprises two extension elements 4, 5, between which the head 3 is received laterally by means of pins or screws 6. The pins or screws 6 are inserted through holes in the extension elements 4, 5 and inserted laterally into a frame 7 of the head 3. In addition, the pins 6 are non-positively held or screwed into the extension elements 4, 5 or into the frame 7, for example by means of a spring connection, so that the head 3 remains rotatably connected to the handle 2.

Between the extension elements 4, 5, a cylinder 8 extends in the direction of the longitudinal axis of the handle 2, which is firmly connected to the handle and forms an extension of the handle 2 in the direction of the head 3. A movable element 9 is housed inside the cylinder 8, which is mounted relative to the handle 2 by means of a helical spring 10. The helical spring 10 is housed in a central hole 11 of the handle 2, which extends in the direction of the longitudinal axis of the handle.

By means of the element 9, which rests on the head 3 on the side opposite the handle 2, the head 3 is elastically fixed relative to the handle 2. The element 9 allows the head 3 to rotate during shaving and at the same time allows the head 3 to rotate back to its original position relative to the handle 2 after it has been removed from a contact contour. A possible final position of the head 3 relative to the handle 2 against the elastic force of the helical spring 10 is determined by a projection 12 fixed on the frame 7 of the head 3, which forms a stop for the movable element 9.

Together with the razor blades 13 and the spacer plates 14, a cover 15 is placed on the frame 7 of the head 3 and then fixed by means of the fixing elements 16, 17.

The fastening elements 16, 17 are formed by threaded pins, to which knurled nuts 18, 19 can be screwed, which protrude on both sides from the lower part of the frame 7 and are thus simultaneously arranged close to the side edges of the razor blades 13. In this way it is ensured that in any position of the razor 1 during shaving they cannot touch or damage the skin or interfere with shaving.

The cover 15 is pushed onto the frame 7 by means of the fastening elements 16, 17 such that it rests in the recesses 20, 21 (Figures 3, 10) of the frame 7. In this way, the razor blades 13 together with the spacer plates 14 can be easily removed from the head 3 and new razor blades 13 can be reinserted.

Instead of the fastening elements 16, 17 shown in combination with the knurled nuts 18, 19, other fastening elements can also be used, for example locking elements that are pressed into the corresponding locking openings and the like.

The fastening elements 16, 17 connect the cover 15 to the frame 7 in such a manner that they pass through V-shaped gaps 23 (Figure 10) in the rear edge of each of the razor blades 13, so that the fastening elements 16, 17 preferably have an angle of inclination with respect to the frame 7 and the cover 15, which corresponds to the angle formed by the front edges of the razor blades 13 with respect to each other with respect to the surface of the razor blades 13.

The scope of the present invention is defined by the appended claims.

Claims (16)

1. A razor (1) having a handle (2) and a head (3) pivotally mounted on the handle (2), wherein the head (3) has a frame (7) and a cover (15), and at least one razor blade (13) having a cutting edge and mounted between the frame (7) and the cover (15), wherein the at least one razor blade (13) is interchangeably mounted between the frame (7) and the cover (15), the at least one razor blade (13) can be inserted between the frame (7) and the cover (15) by means of eccentrically arranged and manageable fastening means (16, 17, 18, 19), the fastening means (16, 17, 18, 19) can be guided through eccentric recesses located in at least one razor blade (13), and the at least one razor blade (13) can be connected to the frame (7) and the cover (15) by the fastening means (16, 17, 18, 19), characterized because at least two fixing means (16, 17, 18, 19) are provided which are attached symmetrically off-centre and therefore close to the lateral edges of at least one razor blade (13), wherein the symmetrically off-centre arrangement of the fixing means (16, 17, 18, 19) allows a geometry of the head (3) comprising a strong central cavity at its upper edge. 2. Razor (1) according to claim 1, characterized because The cavities are notches or holes applied to the at least one razor blade (13). 3. Razor (1) according to claim 2, characterized because The notches or drill holes are arranged in lateral areas of a rear edge, on side edges or on the inside of at least one razor blade (13). 4. Razor (1) according to one of claims 1 to 3, characterized because the fixing means (16, 17, 18, 19), with respect to the plane formed by the at least one razor blade (13), are arranged perpendicularly with respect to the at least one razor blade (13) or at an angle of up to 40° with respect to the perpendicular to the plane formed by the at least one razor blade (13). 5. Razor (1) according to one of claims 1 to 4, characterized because The at least one razor blade (13) is mounted at least on one side via a spacer plate (14) relative to the frame (7) and/or the cover (15). 6. Razor (1) according to one of claims 1 to 5, characterized because The razor (1) comprises at least two razor blades (13) which are arranged in planes substantially parallel to each other and whose cutting edges are offset from each other at an angle of between 10° and 60° with respect to the base surface of the frame (7), wherein at least one spacer plate is provided between the at least two razor blades (13). 7. Razor (1) according to claim 6, characterized because The at least two razor blades (13) rest with their rear longitudinal edges away from the cutting edges and with their front longitudinal edges located next to the cutting edges against contact surfaces or contact bevels that are formed on the frame (7) and/or on the cover (15) or are produced by other mechanical elements. 8. Razor (1) according to one of claims 1 to 7, characterized because the fixing means (16, 17, 18, 19) comprise a screw which is mounted on the frame (7) or on the cover (15) and which can be fixed with respect to the cover (15) or the frame (7) by means of a nut, in particular a knurled nut (18, 19), or because the fixing means (16, 17, 18, 19) each comprise a threaded pin with a knurl which can be firmly screwed into the frame (7) and/or the a (15). 9. Razor (1) according to one of claims 1 to 8, characterized because The head (3) is elastically and/or rotatably mounted relative to the handle (2). 10. Razor (1) according to one of claims 1 to 9, characterized because The head (3) is mounted in relation to a cylinder (8) connected to the handle (2) by means of an element (9) that moves together with the head (3). 11. Razor (1) according to claim 10, characterized because The element (9) is mounted by means of a spring with respect to the cylinder (8). 12. Razor according to one of claims 1 to 11, characterized because The head (3) is connected via the frame (7) to two extension elements (4, 5) of the handle (2). 13. Razor (1) according to claim 12 and one of claims 10 or 11, characterized in that The movable element (9) and the cylinder (8) are arranged between the extension elements (4, 5). 14. Razor (1) according to claim 12 or 13, characterized because The head (3) is fixed to the extension elements (4, 5) by means of pins or screws (6). 15. Razor (1) according to one of claims 1 to 14, characterized because The handle (2) is S-shaped. 16. Razor (1) according to one of claims 1 to 15, characterized because The handle (2) is made at least partially of metal, in particular of a cast zinc material.