The embodiments of the present invention relate to a razor handle, a razor and to a method of manufacturing a razor handle.
In particular, the present invention relates to a razor handle extending in a longitudinal direction between a front end and a rear end, the rear end being opposite the front end, and including an elongated body, the elongated body having an outer surface and being provided with a first hole, the first hole opening on the outer surface and the razor handle further including a first insert partially encapsulated within the first hole.
WO 2009098632 recites an example of a razor handle including a core and an insert which is placed in a channel of the core and can be produced with low manufacturing costs.
However, the insert of WO 2009098632 extends along a large part of the razor handle; therefore, the insert does not provide a good distribution of the weight of the razor handle and does not permit obtaining an optimum location of its center of gravity.
One objective of the present invention is to avoid this drawback. Another objective is to improve razor handle by properly distributing the handle weight according to the present invention.
These objectives are solved by the fact that, according to the present invention, the first insert is centered on a first point which is located at a distance measured along the longitudinal direction greater than 15% of the length of the razor handle from the front end.
Due to the insert, the razor handle can have a proper weight which is localized at a chosen position of the razor handle, enhancing user handling to improve shaving performance. The insert thus allows the razor handle to have a good balance regardless the shape of the handle.
In addition, since the insert is encapsulated within the elongated body, the insert cannot be detached from the first hole. Also, such a razor handle has a better hold and provides an improved integrity of the razor handle as a single piece. Furthermore, such a razor handle according to the present invention can be easily recycled by separating the material of the inserts from the material of the elongated body.
Furthermore, the weight of the razor handle can be increased because to the insert without increasing plastic volume of the razor handle.
In advantageous embodiments of such a razor handle, one and/or the other of the following features may be incorporated:
The present invention also concerns a razor including such a razor handle and a shaving cartridge connected to the razor handle.
The above and other objects and advantages of the present invention will become apparent from the detailed description of one embodiment of the present invention, considered in conjunction with the accompanying drawings.
In the various figures, the same references denote identical or similar elements.
The following description will make reference to different hand grasping positions of the razor handle 2. Various positions are illustrated on
The razor handle 2 has a generally curved shape when seen from the side and extends in a longitudinal direction C between a front end 2A and a rear end 2B, the rear end 2B being opposite the front end 2A. The razor handle 2 also has an elongated body 4 for hand grasping the razor handle 2. More precisely, the elongated body 4 extends longitudinally from the rear end 2B to a location near the front end 2A. The razor further includes connecting means 5 in the continuation of the elongated body 4 up to the front end 2A. In other words, the elongated body 4 extends longitudinally from the rear end 2B to the beginning of the connecting means 5. The shaving razor 1 extends longitudinally from the rear end 2B to the free end of the connecting means 5, the free end to be connected to the shaving cartridge 3.
Referring to
For instance, the length L of the razor handle 2 is about 126 mm. The length L5 of the connecting means 5 is about 29 mm. The length L4 of the elongated body 4 is about 95 mm.
The razor handle 2 may also define a variable height H and a width W along the length L thereof. The height H of the razor handle 2 may vary along the direction C, but can be included between about 15 mm and about 25 mm, alternatively about 20 mm.
As shown in the upper and lower views of the razor handle 2 of
The elongated body 4 also includes a second enlarged part Ep2 located proximate to the rear end 2B of the razor handle 2 having a width W2 which is also maximized. These enlarged parts Ep1, Ep2 allow for easy and comfortable finger positioning before and during shaving operations, for example in the third position as depicted on
The first enlarged part Ep1 extends from the connecting means 5 to the second enlarged part Ep2. The first and second enlarged part Ep1, Ep2 have a length LEp1, LEp2 along the longitudinal direction C. The length LEp1 of the first enlarged part Ep1 measured along the longitudinal direction C can be between about 5% and about 15% of the length L of the razor handle 2. The length Ep2 of the second enlarged part Ep2 measured along the longitudinal direction C can be between about 50% and about 70% of the length L of the razor handle 2. For instance, the length LEp1 of the first enlarged part Ep1 can be about 13 mm whereas the length LEp2 of the second enlarged part Ep2 can be about 75 mm.
The connecting means 5 can be integral with the elongated body 4 and may include two flexible arms 6 which extend from the elongated body 4 and protrude towards a free end 6B at the front end 2A of the razor handle 2. In other words, the flexible arms 6 and the elongated body 4 can be unitary.
As depicted on
The front end 2A of the elongated body 4 may be provided with a lock and release mechanism 8. For instance, the lock and release mechanism 8 can include a slide element 8A cooperating with the connecting means and connected to the elongated body 4, the slide element 8A being movable on the razor handle 2. The shaving cartridge 3 can be clipped into place by a simple pressing action on the elongated body 4. The slide element 8A is further provided with a finger rest area 8B. To replace the shaving cartridge 3, a user can press on the finger rest area 8B provided on the razor handle 2 using thumb pressure. The slide element 8A is connected to the flexible arms 6, which causes the flexible arms 6 to move towards one another. The slide element 8A also cooperates with a groove 8C formed on the shaving cartridge 3 and releases the shaving cartridge 3. Conveniently, the lock and release mechanism 8 is provided at a location that corresponds to that of the user's thumb when in use, enabling a shaving cartridge 3 to be clipped into place and removed by holding the razor handle 2 with one hand and the shaving cartridge 3 in the other.
The elongated body 4 has an outer surface 4E, and more precisely an upper face 4A and a lower face 4B as depicted on
In
The elongated body 4 and the connecting means 5 can form a unitary element. The elongated body 4 and the connecting means 5 can be molded out of a material during a single step of a manufacturing process. The elongated body 4 and the connecting means 5 can be mulded out of the same material. The material may be any moldable material. The material is chosen among plastics, metals, such as metal alloys, and rubbers. For instance, the elongated body 4 and the connecting means 5 can be molded in a thermoplastic material, for example in acrylonitrile butadiene styrene (ABS) or in polypropylene (PP).
As depicted on the figures, the elongated body 4 includes a first hole 9. The first hole 9 is located in the 15 first enlarged part Ep1 of the razor handle 2. As illustrated on
As shown in
The razor handle 2 further includes a first insert 11 located within the first interior space 9B of the first hole 9. More precisely, the first insert 11 is partially encapsulated within the first hole 9 as illustrated in
The first insert 11 has a size which is smaller than the first interior space 9B of the first hole 9. Also, as illustrated on
According to the present invention, the first insert 11 is maintained, and advantageously secured, within the first hole 9 and can therefore not be detached from the first hole 9 by a user.
The elongated body 4 may also be provided with a second hole 10 located proximate to the rear end 2B. The second hole 10 opens on the outer surface 4E of the elongated body 4. The elongated body 4 thus includes a first hole 9 and a second hole 10. The first and second holes 9, 10 are respectively located in the first enlarged part Ep1 and in the second enlarged part Ep2 of the razor handle 2.
The first and second holes 9, 10 may be blind holes or 5 through holes that extend between the upper face 4A and the lower face 4B of the elongate body 4. Alternatively, the first and second holes 9, 10 may be through-holes that extend between the two lateral sides 4C, 4D. As illustrated on
As shown in
The razor handle 2 further includes a second insert 12 located within the second interior space 10B of the second hole 10. More precisely, the second insert 12 is also partially encapsulated within the second holes 10 as illustrated in
As depicted in
According to the present invention, the surface of the first insert 11 and/or second insert 12 can be directly or indirectly, as detailed hereafter, touchable with a finger of a user. Also, the surface of each of the first insert 11 and/or second insert 12 can form finger rest areas on the upper face 4A or on the lower face 4B of the elongated body 4 as depicted on some positions of
Less than 75%, and alternatively less than 50% of the surfaces of the first and second inserts 11, 12 are encapsulated within the first and second holes 9, 10. In other words, the surface of the first and second inserts 11, 12 which is encapsulated cannot be directly touchable by the user as the surface of the first and second inserts 11, 12 is surrounded with the material of the elongated body 4.
In this manner, when a user wants to shave, he may position his fingers on the location of the first hole 9 and/or second hole 10, and on the surfaces of the first insert 11 and/or second insert 12 which are not encapsulated. The locations of the first insert 11 and/or second insert 12 provide improved gripping and finger rest comfort in certain shaving positions, such as the first position (
The first insert 11 may enhance hand grasping in certain shaving positions, such as in a position where the razor handle 2 is held between the index and the thumb, the thumb resting on the first insert 11 on the upper face 4A whereas the index rests on the first insert 11 on the lower face 4B of the razor handle 2.
The density of the first insert 11 and/or the second insert 12 may be greater than the density of the material of the elongated body 4. The first insert 11 and/or the second insert 12 thus contribute to increase the weight of the razor handle 2 without significantly increasing the volume of the handle 2. As a consequence, the razor handle 2 can be heavy enough to provide a good shaving experience and to make sure that good contact is provided between the blades 3A of the shaving cartridge 3 and the skin of the user to be shaved. In at least one embodiment of the present invention, each of the first and second inserts 11, 12 is only made of metal and does not include any other material. The material chosen for the first insert 11 and/or the second insert 12 may also have an impact on the sensing experience of the user when he positions his fingers on the first and second inserts 11, 12. For example, an insert made of metal provides a pin-point contact with the fingers of the user, thus allowing the communication of all transmitted vibrations from shaving. To the contrary, an insert made of rubber, such as thermoplastics, absorbs most of the vibrations from shaving and does not transmit the vibrations to the fingers of the user.
Since the material of the first and second inserts 11, 12 are different from the material of the elongated body 4, the user can easily determine through touch whether his fingers are well placed on the first insert 11 and/or the second insert 12 of the razor handle 2. By determining the location of the first and second inserts 11, 12, the user can also be guided to place his fingers on the free space of the first hole 9 and/or the second hole 10 that may serve as finger rest areas. In the case that the razor handle 2 includes two inserts, the first and second inserts 11, 12 may not be both necessarily of the same material. For instance, the first insert 11 provided within the first hole 9 may be made of metal and the second insert 12 provided within the second hole 10 may be made of rubber or vice versa.
The first insert 11 and/or the second insert 12 can also be made with several materials. In particular, the first insert 11 and/or the second insert 12 can be covered with a layer of another material having a smooth surface. For example, the first insert 11 and/or the second insert 12 may be made of metal and covered by a layer of rubber. In this case, the layer can have a surface finish of between about 0.5 pm and about 1.6 pm (roughness Ra).
The first insert 11 and/or the second insert 12 may also have an irregular surface, for instance with craters or bumps due to a knurled pattern or a divot pattern. The type of surface of the first insert 11 and/or the second insert 12 effects the tactile sensing of the user when he positions his fingers on the first and second inserts 11, 12.
In at least one embodiment of the present invention, the first insert 11 and/or the second insert 12 may be a sphere of which one hemisphere is made of rubber and the other hemisphere is made of plastic. The first and second inserts 11, 12 may thus serve a double purpose by providing different types of finger rest areas. Due to the first insert 11 and/or the second insert 12, the elongated body 4 can therefore be in a material which is lighter and cheaper when compared to the material used in known razor handles. Nevertheless, despite the lightness of the material, the razor handle 2 still has a high quality appearance and an optimized weight because of the first insert 11 and/or the second insert 12.
The first insert 11 and/or the second insert 12 may have a spherical shape. The first inserts 11 and/or the second insert 12 may have an ovoid shape. The inserts 11, 12 may have any other shape such as a parallelipipedic, cubical or cylindrical shape. The first and second inserts 11, 12 may have the same shape or may have a different one. Similarly, first and second inserts 11, 12 may have the same dimensions or may have different ones. Also, the first and second inserts 11, 12 may include the same material(s) or may include a different one(s).
The inclusion of the first insert 11 and/or the second insert 12 does not lead to an excessive deformation of the shape of the elongated body 4. The shape of the elongated 4 remains substantially similar to the shape of an elongated body that does not include any inserts. As depicted on the Figures, the first insert 11 and/or the second insert 12 is a single sphere. However, each of the first and second inserts 11, 12 may not be complete spheres and may only have a partial curved surface, especially a partial spherical surface which serves as a finger rest area. In the illustrated embodiment of the present invention in which the inserts are spheres as depicted on the figures, such spheres have a respective diameter D11, D12 measured in a direction perpendicular to the longitudinal direction C which is between about 40% and about 80% of the largest width W1 of the elongated body 4. For example, the respective diameters D11, D12 are between about 10 mm and about 20 mm, alternatively less than about 15 mm, and alternatively about 12 mm.
The first insert 11 and/or the second insert 12 may be press-fitted or insert molded within the first hole 9 and/or the second hole 10.
In at least one embodiment of the present invention, the first insert 11 and/or the second insert 12 are maintained, and advantageously secured, respectively within the first and second holes 9, 10 and can therefore not be detached from the first and second holes 9, 10 by a user. The first and second inserts 11, 12 cannot move in any manner in the first and second holes 9, 10. As a consequence, the first insert 11 and/or the second insert 12 are not movable (i.e. immovable or motionless) respectively relative to the first and second holes 9, 10.
The non-movable first and second inserts 11, 12 thus form finger rest areas.
The first insert 11 and/or the second insert 12 may also be movable. The first insert 11 and/or the second insert can, for instance, be spheres that are movable, such as in sliding around their own axis within their corresponding first and second holes 9, 10. Also, a gap may be provided between the first insert 11 and/or the second insert 12 and the interior wall 9A, 10A of the first and second holes 9, 10 in order to facilitate the rotation of the first insert 11 and/or the second insert 12 when the inserts 11, 12 are a sphere. The gap may be between about 0.005 pm and about 0.025 pm depending on the chosen rotational freedom of the first insert 11. A smaller gap prevents the first insert 11 from rotating easily whereas a bigger gap facilitates the rotation. The surface finish of the first insert 11 and/or the second insert 12 and/or of the first hole 9 and/or the second hole 10 is adapted to allow this movability, especially the rotation.
However, a user that may position one of his fingers on such a movable first insert 11 and/or second insert 12 may find it difficult to shave as his finger(s) may constantly slip on the first insert 11 and/or the second insert 12. Shaving may therefore be imprecise and uncomfortable. As a consequence, when the first insert 11 and/or the second insert is movable respectively relative to corresponding first or second holes 9, 10, it does not best function as fingers rest areas.
More precisely, when the first the first insert 11 is movable, it cannot be a finger rest area. The first insert 11 is located in the front end 2A of the razor handle 2. The first insert 11 is centered on a first point 11A which is located at a distance L11 measured along the longitudinal direction C from the front end 2A. Preferably, the distance L11 measured along the longitudinal direction
C that is greater than about 15% of the length L of the razor handle 2. The distance L11 measured along the longitudinal direction C may be greater than 20% of the length L of the razor handle 2. Alternatively, the distance L11 measured along the longitudinal direction C is at least about 25% of the length L of the razor handle 2.
The distance L11 may be between about 25% and about 40% of the length L of the razor handle 2 in the longitudinal direction C. For example, the distance L11 may be at least 35 mm from the front end 2A. Thus, the weight of the razor handle 2 is chosen to ensure a good balance. Also, in the present invention, by adding the first insert 11 at a precise location, for instance at least 15% of the length L of the razor handle 2, it is possible to control the location of the center of gravity G regardless of the shape of the razor handle 2.
The second insert 12 is centered on a second point 12A which is located at a distance L12 measured along the longitudinal direction of less than 20% of the length L of the razor handle 2 from the rear end 2B. For instance, the distance L12 may be less than 20 mm from the rear end 2B. As illustrated on the Figures, in an embodiment of the present invention in which the first and second inserts 11, 12 are spheres, the first point 11A and the second point 12A respectively correspond to the center of the first and second inserts 11, 12.
The distance L11-12 between the first point 11A and the second point 12A measured along the longitudinal direction C is between about 50% and about 70% of the length L of the razor handle 2. For example, the distance L11-12 may be between about 75 mm and about 85 mm, alternatively about 78 mm. However, this distance L11-12 may vary depending on the length L4 of the elongated body 4 as well as the weight balance due to the first insert 11 and/or the second insert 12.
Furthermore, the elongated body 4 may have different shapes. For instance, as depicted in
The lateral sides 4C, 4D of the elongated body 4 may further include side gripping areas 18 including a plurality of spaced fins 19 located proximate to the first enlarged part Ep1. The side gripping areas 18 enhance finger gripping of the razor handle 2, especially in the first position (
Because of the first and second inserts 11, 12, the razor handle 2 has a center of gravity G whose location can be specifically chosen. The center of gravity G can be located close to the middle part of the razor handle 2 as seen on
This application is a national stage application of International Application No. PCT/EP2014/066733, filed Aug. 4, 2014, the entire contents of which is incorporated herein by reference.
Filing Document | Filing Date | Country | Kind |
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PCT/EP2014/066733 | 8/4/2014 | WO | 00 |