LU84119A1 - RAZORS AND SHAVING ELEMENTS FOR RAZORS - Google Patents

Description

s "Razors and shaving elements for razors"

The present invention relates to a razor blade assembly, in the form of a complete razor or a shaving element for razor. The expression "shaving element" 5 designates an assembly with one or more blades, which can be mounted on a handle or a razor mount or made in one piece with such a handle or such a frame, to form a complete razor. The invention relates in particular to link to a disposable razor, that is to say a razor which can be thrown away when the user considers that he will no longer obtain satisfactory use for it. The invention relates more particularly to the provision, in such a blade assembly, of mobile means 15 making it possible to expose the edge of the blade for shaving or to make this edge safe so that it cannot injure someone handling the blade assembly.

According to the present invention, a razor blade assembly is provided, the constituent parts of which are formed by a blade having a cutting edge, a cap and a guard bar spaced from the adjacent edge of the cap to form an opening between them, as well as means supporting at least one of the component parts 2 constituting the pivoting assembly with respect to at least one other of these constituent parts, in order to allow movement of the blade relative to the above-mentioned opening, between a first position in which the cutting edge of the blade is exposed for shaving and a second position in which this cutting edge is no longer exposed.

The invention will be better understood from the following description of three razor constructions according to the invention, which are however only described by way of examples only, and with reference to the accompanying drawings.

Figure 1 is a side elevational view of an embodiment of a razor according to the invention.

Figure 2 is a rear elevational view of the razor of Figure 1.

Figure 3 is a sectional view of the razor head, showing the blade in a "shaving" position.

4 Figure 4 is a section through the razor head, showing the blade in a "safe" position.

Figure 5 is an expanded perspective view of the razor head.

Figures 6 and 7 are sections of a razor head constituting a variant of the embodiment of Figures 1 to 5, these sections 30 respectively showing the positions of "shaving" and "safety" of the razor blade.

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Figures 8 and 9 are sections of a third embodiment of a razor according to the invention, these sections showing a double-edged razor, a cap of which is movable to expose a cutting edge of the blade, to cover the two cutting edges or to expose the other edge of the blade.

Figures 10, 11 and 12 are respectively an end view, a bottom view, partially in section, and a side elevation view of the third embodiment of the razor.

The razor illustrated by the accompanying drawings is formed from two main constituent parts, the first being a handle 10, one end of which is formed in one piece with a razor head 11. The handle and the head can be molded in one piece of plastic.

The second component part of the razor is constituted by a blade platform 12, on which a blade 13 (or alternatively, if desired, two spaced parallel blades) is mounted between two locating pins 14 and fixed to the platform by rivets 15, the pins 14 and the rivets 15 being formed in one piece with this platform.

On the side of the platform 12, which is adjacent to the cutting edge 13a of the blade 13, a guard bar 16 is formed integrally with the platform and connected to the latter by arms 30 17. These these are spaced along the guard bar to form, between it and the platform, 4 openings through which water can be sent to wash the edge of the blade.

Pivots 18 project from the opposite ends of the platform, along a line parallel to and lying below the cutting edge of the blade, these pivots being; intended to be mounted in openings or support cavities 19 provided in the head 11 and which will be described later.

XO The side of the platform 12, which is parallel to the guard bar 16 but opposite to it, has a control bar 20. This carries, on its rear surface, ribs 21 on which can act a finger of 1'aisais ger, this bar 20 also comprising two pins 22 located at its opposite ends and provided for a purpose which will be described later.

The razor head 11 is in the form of a tank 23 of V-shaped section which is formed by two triangular end walls 24, an upper wall 25 forming the cap of the razor, a base wall 26 made in one piece with the upper end of the razor handle, and a rear wall 27 formed integrally with 25 the end walls 24 and with the upper wall 25 but lying away from the base wall 26. The upper wall 25 and the base wall 26 are provided at a distance from each other, the spacing existing along their front edges being less than that provided along their rear edges in order to form between these walls the aforementioned container 23 of V-section. The end walls 24 are designed to fit over the ends of the blade platform and the guard bar made in one piece, the front ends of the walls 24 having the support openings. 19, in which the pivots 18 are introduced.

The rear edge 24a of each of the end walls 24 of the razor head has a pair of cavities 24b which can cooperate resiliently with the pins, such as 22, 10 of the control bar 20, when the razor platform is in its highest inclined position or in its lowest inclined position, in order to lock the platform in one or the other of these positions.

The highest inclined position, which is illustrated in Figure 3, is the "shaving" or exposing position of the razor blade. In this position, this blade is at the correct shaving angle and location with respect to the surfaces of the guard bar 16 and the cap 25 of the razor, these surfaces being those which come into contact with the skin. of the user. The lowest inclined position, which is illustrated in Figure 4, is the "transport" or "safety" position, in which the cutting edge is withdrawn from the shaving position and is at a sufficient distance in below the opening between the cap 25 and the guard bar 16 to be in a position in which this edge cannot injure someone handling the razor.

6 The elasticity of the supports and the pins allows them to hold the blade platform securely in the positions of Figures 3 or 4, while allowing movement of the blade platform 5 between these positions under the pressure of a finger on the bar 20.

The tray 23 of V-shaped section has the advantage from the manufacturing point of view, that the entire razor simply requires that the platform to which the blade (s) are fixed is introduced into the tray and that the pivots separate resiliently the end walls 24 until they penetrate into the support openings, at which point the lugs 22 cooperate with a set of cavities 24b. Guide channels of progressively decreasing depth may be provided on the internal faces of the end walls to guide the pivots in the support openings.

As a variant of the embodiment described and as illustrated by FIGS. 6 and 7, the razor head has two end walls 124, a cap 125 and a rear wall 126 which is made in one piece with this cap 125 along 25 the rear edge of the latter, and with the end walls 124 along their rear edges, this rear wall also being made in one piece with the upper end of the razor handle 110.

The razor comprises a blade platform 112 and a blade 113, which are made and 7 movable essentially in the same way as the blade and the platform of the first embodiment described, except that the rear wall 126 comprises a slot 127 extending in the longitudinal direction of the handle and in which a finger 121 provided on the platform can engage and slide. This finger 121 protrudes through the slot 127 to allow its actuation by the thumb to another ddgt of the user. By pushing the finger 121 b 3 along the slot, the platform 112 comprising the blade 113 pivots about the axis of symmetry of the pivots 118.

The blade platform comprises a lug 122 intended to engage, in the "shaving" position of the blade, in a cavity 128 provided in the rear wall 126, so that the blade is located and maintained from safely in the shaving position, although the blade head is not stressed.

According to a variant (not shown) of the first and the second embodiment of the invention, the pivots 118 are provided on the end walls 124 and the support openings are formed in the blade platform.

According to another variant (not illus trated) of the first and of the second embodiment of the invention, the guide bar is made in one piece with the end walls of the razor head, so that only the blade 30 and the blade platform are movable by pivoting.

In the third embodiment 8 of the invention, illustrated by FIGS. 8 to 12, the razor comprises a double-edged blade 313 and comprises a handle 310 which is pivotally mounted in a blade platform 312 5 according to a axis parallel to the cutting edges of the double blade 313 mounted on the platform 312. The blade is preferably fixed to the platform by rivets (not shown). As an alternative to the double-edged blade, two single, oppositely oriented blades can also be used. As yet another variant, it is possible to use twin blades. Guard bars 316 are attached to opposite sides of the platform 312.

In this embodiment, a cap 311 is slidably mounted on the platform so that it can slide in contact with the blade in a direction perpendicular to the cutting edges of this blade. To this end, the cap is formed in one piece with side walls 20 the 314 and lower edges 315 which extend from the base of these side walls and engage under the platform 312.

In a central position, the lower face (¾ k cap 311 is provided with rack teeth 319 which cooperate with pinion teeth 317 formed on the adjacent end of the pivoting handle. The arrangement is such that, when the handle is caused to move by pivoting relative to the platform, the coif-30 fe is caused to slide in the direction mentioned above, perpendicular to the 9 cutting edges of the blades.

It can be seen in FIG. 9 that, in the position illustrated, according to which the handle 310 is perpendicular to the blade platform 5 312, the cap 311 is arranged symmetrically with respect to the blade edges and covers each of these edges, this is the "safety" or "transport" position of the cover.

However, if the handle is made to tilt clockwise towards the position illustrated in FIG. 8, the cooperation of the pinion teeth with the rack teeth causes the cap to move to the right as illustrated in FIG. 8, thus uncovering the 15 cutting edge on the left until it is sufficiently exposed for shaving. Conversely, the handle can be tilted counterclockwise to cause the cap to cover the left edge and expose the right edge for shaving. In the position where the blade is fully exposed, an edge 318 of the platform will abut against the handle 310.

A suitable spring detent (not shown) is provided on the cap 311 so as to penetrate any one of three cavities suitably provided in the blade platform in order to locate the cap relative to this platform. form in either of the two "shaving" positions or in the "safety" position of the blade.

As an alternative, means may be provided, for example a rack and screw mechanism, by means of which the cap can be moved progressively relative to the blade platform and stopped in any chosen position to give a determined choice of blade exposure positions over a limited range.

Although the invention has been described by considering disposable razors, the new features envisaged mainly relate to the head of the razor and are therefore applicable to a shaving element.

The expression "pivoting movement" which has been used in the present case is intended to encompass all forms of rotary movement, both around a fixed axis and around a mobile axis.

Claims (11)

11 RE VE M) ICATIONS 1. Razor blade assembly, the constituent parts of which are formed by a razor blade having a cutting edge, a cap and a guard bar spaced from the adjacent edge 5 of the cap to form an opening between them, as well as supporting means at least one of these component parts so that it is movable relative to at least one other of the component parts, in order to allow movement of the blade relative to the above-mentioned opening, between a first position in which the cutting edge of the blade is exposed to allow shaving and a second position in which the cutting edge is no longer exposed, this assembly being characterized in that the aforementioned support means are provided to allow a pivoting movement of the blade towards the first mentioned position or away from it. 2. Blade assembly for a razor sui-20 before claim 1, characterized in that the movable component part is pivotally supported about an axis of symmetry parallel to the edge of the blade. 3. Blade assembly for razor sui-25 before either of claims 1 and 2, characterized in that the movable component is the guard bar. 4. Razor blade assembly according to claim 1, characterized in that the blade is rigidly fixed to a platform which can pivot relative to the above-mentioned cap around an axis of symmetry parallel to the cutting edge of the blade . 5. Blade assembly for razor according to any one of claims 1 to 4, characterized in that it comprises a base wall provided away from the cap, and two separated end walls, rigidly connecting the cap and the base wall forming a housing for the blade and the blade platform, this blade and this blade platform being pivotally supported inside this housing to allow them to move between the first and second positions . 6. Blade assembly for razor according to any one of claims 1 to 5, characterized in that the guard bar is integral with the blade platform. 7. Razor blade assembly according to either of claims 1 and 2, characterized in that the guard bar is integral with the cap. 8. Razor blade assembly according to any one of claims 1 to 7, characterized in that the constituent parts further comprise a razor handle secured to the cap. 9. Razor blade assembly according to claim 1, characterized in that the constituent parts further comprise a razor handle, the razor blade being mounted 13 on a blade platform, this blade and this platform being mounted on the handle so as to be able to pivot about an axis of symmetry parallel to the cutting edge of the blade, the cap 5 being slidably mounted on the blade platform, a control device connecting the handle. to the cap to allow it to slide relative to the blade between the first working position and the second position or position of withdrawal, following a relative pivoting between the blade platform and the razor handle. 10. Razor blade assembly according to claim 9, characterized in that the blade is a double-edged blade, the blade platform being pivotable relative to the handle between two extreme positions in each of which a different cutting edge is exposed for shaving while the other cutting edge is in a retracted position, the blade platform being able to occupy an intermediate position in which the two cutting edges are in a withdrawing position. 11. Razor blade assemblies, as described above and / or illustrated by the accompanying drawings.