AU2018246296B2 - Hairstyling razor and hairstyling blade - Google Patents

Abstract

The invention relates to a hairstyling razor (1), which is used for hairstyling and comprises a handle (10) and a razor head (2) connected to the handle (10). At least one working section (3) is arranged on a longitudinal side (12) of the razor head (2), which working section is set back in relation to an alignment line (120) of the longitudinal side (12). A hairstyling blade (4) having at least one cutting edge (14) is held in the razor head (2) and arranged therein in such a way that, in the working section (3), the cutting edge (14) of the hairstyling blade is at least partly exposed and does not protrude beyond the alignment line (120). The razor head (2) comprises a guiding device (5) having at least one contact surface (15) for the hairs to be cut. The contact surface (15) is arranged, at least in some sections, at an angle of between 16° and 26° to the plane of the hairstyling blade (4) held in the razor head (2) such that the hairs to be cut lie at a defined angle to the cutting edge (14) when the contact surface (15) is applied to the hairs.

Description

2801P162PCT 1 29.03.2018 Campus

Haircutter and Haircutting Blade

Description

The present invention relates to a haircutter for trimming and

styling hair having at least one grip and at least one blade head

connected with the grip. The blade head accommodates at least one

haircutting blade having at least one cutting edge.

Cutting hair on a head by means of a haircutter offers as a rule

many advantages over cutting hair by means of scissors. However,

handling the haircutter calls for a highly controlled positioning or

guiding of the cutter relative to the hair. What is particularly

decisive is the angle at which the haircutter is held against the

hair during cutting. In practical use, handling a haircutter thus

tends to require intense and professional instruction and extensive

practice or experience.

The haircutter according to DE 10 2010 006 030 B4 thus provides for

an angled orientation of the longitudinal axis of the blade relative

to the longitudinal axis of the haircutter. This results in an

inclined cut even if the longitudinal axis of the haircutter is held

straight relative to the hair.

In practical use it has been observed though that handling this

haircutter still requires a high degree of experience or practice

for obtaining an optimal cutting result.

It is therefore the object of the present invention to improve the

handling of a haircutter and in particular to facilitate it for less

skilled users.

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This object is solved by a haircutter having the features of claim 1

and by a haircutting blade having the features of claim 31.

Preferred features are the subjects of the subclaims. Further

advantages and features can be taken from the general description of

the invention and the description of the exemplary embodiments.

The haircutter according to the invention serves for trimming and

styling hair, in particular hair on a head, and comprises at least

one grip and at least one blade head connected with the grip. At

least one longitudinal face of the blade head has at least one

working section disposed thereat which is recessed from an alignment

line of the longitudinal face. The blade head can accommodate at

least one haircutting blade having at least one cutting edge. The

haircutting blade can be disposed in the blade head so that its

cutting edge in the working section is at least partially exposed

and does not protrude beyond the alignment line respectively is

recessed from the alignment line. The blade head comprises at least

one guiding device having at least one placing surface for the hair

to be trimmed. The placing surface is disposed at least in sections

at an angle of more than 120 and in particular less than 30° and

preferably less than 260 and particularly preferably at an angle

between 160 and 260 relative to the plane of the haircutting blade

that can be accommodated in the blade head. This achieves that the

hair to be trimmed lies at a defined angle to the cutting edge as

the placing surface is placed against the hair.

Preferably the haircutter comprises at least one haircutting blade.

A particularly preferred haircutter is equipped as follows: It

serves for trimming and styling hair, in particular hair on a head,

and comprises at least one grip and at least one blade head

connected with the grip. At least one longitudinal face of the blade

head has at least one working section disposed thereat which is

recessed from an alignment line of the longitudinal face. The blade

head accommodates at least one haircutting blade having at least one

cutting edge. The haircutting blade is disposed in the blade head so

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that its cutting edge in the working section is at least partially

exposed and does not protrude beyond the alignment line respectively

is recessed from the alignment line. The blade head comprises at

least one guiding device having at least one placing surface for the

hair to be trimmed. The placing surface is disposed at least in

sections at an angle of more than 120 and in particular less than

30° and preferably maximally 260 to the plane of the haircutting

blade accommodated in the blade head. This achieves that the hair to

be trimmed lies at a defined angle to the cutting edge as the

placing surface is placed against the hair.

The inventive haircutter offers many advantages. A considerable

advantage is that the blade head comprises at least one guiding

device having at least one placing surface. The placing surface

causes the haircutter to be oriented to the plane of the haircutting

blade at a particularly advantageous angle to the hair. This allows

to obtain a defined, optimal cutting angle by simply placing the

placing surface of the haircutter on the hair. Thus the inventive

haircutter allows to achieve a considerably improved trimming result

even by users having less than extensive practice or experience.

Another particular advantage is the angle of more than 120 since the

hair is thus optimally cut. This angle provides a cut to the hair

resulting in more motion and in particular more volume in the

hairstyle. Another particular advantage is the angle of less than

30°. The inventive angular range effectively avoids for one, too

flat cutting which would thin out the hair and thus obtain a flat

hairstyle. For another, too blunt cutting is thus reliably

prevented. Also, hair splitting or other undesirable cutting results

are reliably inhibited. It is also advantageous that an angle less

than that specified by the placing surface cannot be obtained even

in case of misuse or in case of an inexperienced person using the

haircutter.

At least in the region of the exposed cutting edge in the working

section the placing surface is in particular disposed at an angle of

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more than 120 and in particular less than 30° and preferably

maximally 260 to the plane of the haircutting blade accommodated in

the blade head. In the working section it is particularly decisive

for the hair to be guided at the correct angle. At least in the

region of the exposed cutting edge in the working section the

placing surface is in particular disposed at the angle provided by

the invention to the plane of the haircutting blade accommodated in

the blade head. Or else the placing surface may be disposed at least

in one other or further region at the angle provided by the

invention to the plane of the haircutting blade accommodated in the

blade head.

Preferably the placing surface is at least in sections, in

particular at least in the region of the exposed cutting edge in the

working section, disposed at an angle of substantially 210 and in

particular 210 to the plane of the haircutting blade accommodated in

the blade head. This angle has been found to be particularly

advantageous for styling hair.

The placing surface may at least in sections be disposed at an angle

of more than 120, 130, 140, 150, 160, 170, 180, 190 or 200. In all

the configurations it is preferred for the angle to be larger than

or equal to 50. The placing surface may at least in sections be

disposed at an angle of less than 30°, 290, 280, 270, 260, 250, 240,

230 or 220. These angles have been found to be particularly

advantageous in cutting and hairstyling tests. Advantageous

configurations may provide for gradations, e.g. of 0.50 or the like.

Particularly preferably the placing surface is at least in sections

disposed at an angle between 130 and 290 to the plane of the

haircutting blade accommodated in the blade head. The placing

surface may at least in sections be disposed at an angle between 140

and 280 and in particular at an angle between 150 and 270 to the

plane of the haircutting blade.

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In other advantageous configurations the placing surface may at

least in sections be disposed at an angle between 160 and 260 and in

particular at an angle between 180 and 240 and preferably at an

angle between 200 and 220 to the plane of the haircutting blade.

Preferably the placing surface is at least in sections disposed at

an angle of 210 showing an angular deviation of +/- 10 and

preferably +/-0.5° and particularly preferably +/-0.2° to the plane

of the haircutting blade. A deviation of +/-2° is also possible and

advantageous. The placing surface may in sections be disposed at

another angle deviating from this angle. The deviating angle

preferably lies between 120 and 30° to the plane of the haircutting

blade.

It is preferred for the placing surface and the blade head to be

configured integrally. This is in particular understood to mean that

the placing surface is incorporated in the blade head. Preferably

the placing surface and the blade head show an integral, joined

configuration. The placing surface is in particular configured

integrally and preferably of one single material with the blade

head. The placing surface and the blade head are in particular

provided by at least one shared component and in particular by at

least one shared cast component. A metallic cast component is

particularly preferred.

It is possible to provide two or more placing surfaces. The two or

more placing surfaces may be configured integrally and preferably of

one single material with the blade head. It is possible for the

blade head to comprise, or to be formed by, two or more blade head

members. In this case at least one placing surface is preferably

integrated in each blade head member. Then at least one placing

surface is in particular configured integrally and preferably of one

single material with a blade head member. Particularly preferably

each blade head member is configured as a metal cast component. The

at least one placing surface may be configured separately from the

blade head respectively from one blade head member.

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The placing surface is in particular provided by a wedge shape

and/or convex shape of the blade head. This allows a highly precise

while also cost-effective manufacture of the blade head where the

required placing surface angle is reliably observed. A cross-section

of the blade head is in particular configured in a wedge and/or

convex shape. Or else it is possible for the placing surface to be

separate from the blade head or to be configured as at least one

separate component. The blade head and/or the placing surface may

show a two-piece and/or multipart configuration.

In a preferred configuration the blade head comprises two side faces

and in particular a front face and a rear face.

In particular at least one placing surface extends on each of the

two side faces. These at least two placing surfaces are in

particular assigned to one shared working section. This shows the

advantage that the left and right sides of the head can be trimmed

without requiring the user to walk around the head or turn the

haircutter around. The at least two placing surfaces assigned to the

shared working section in particular show the same angle to the

plane of the haircutting blade accommodated in the blade head.

Preferably at least two placing surfaces are disposed on one side

face of the blade head each. The placing surfaces of one side face

are assigned to different working sections which are in particular

disposed on opposite longitudinal faces of the blade head. The

placing surfaces of different side faces are in particular assigned

to different working sections which are in particular disposed on

opposite longitudinal faces of the blade head. This allows simple

rotating or turning the blade head for changing between working

sections respectively between placing surfaces. In particular at

least one elevation extends between the at least two placing

surfaces disposed on one side face. In particular do the at least

two placing surfaces assigned to different working sections show the

same angle to the plane of the haircutting blade accommodated in the

blade head.

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In a particularly advantageous configuration two placing surfaces

extend on each of the two side faces. Pairs of placing surfaces each

disposed on different side faces are in particular assigned to one

shared working section. The two placing surfaces of one side face

are assigned to different working sections which are in particular

disposed on opposite longitudinal faces of the blade head.

Particularly preferably the two placing surfaces of one side face

are separated from one another by at least one elevation extending

transverse across the blade head. All of the four placing surfaces

show in particular a substantially identical configuration in

respect of the angle to the plane of the haircutting blade

accommodated in the blade head. This haircutter offers particular

ease of handling since multiple cutting positions are provided

without overloading the cutter with working sections.

In particular at least four placing surfaces are provided for at

least two working sections. The working sections and/or the placing

surfaces may be identical or else different in configuration. The

placing surfaces may for example show different geometries and in

particular different angles. The working sections may for example

show recesses of different depths and/or different lengths along the

longitudinal face of the blade head. Preferably the placing surfaces

and working sections are configured in analogy or identically.

Particularly preferably the placing surfaces of a side face are

separated from one another by at least one elevation extending in

particular transverse and e.g. diagonally across the blade head.

This shows the advantage that two placing surfaces or working

sections may be disposed on one side face wherein the unused area

will not interfere with the hair gliding along the placing surface.

Or else the elevation may extend in the longitudinal direction

across the blade head. The elevation may extend straight at least in

sections and/or curved at least in sections. The elevation is for

example configured as a crest.

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The width of the haircutting blade preferably corresponds to

maximally half the length of the haircutting blade. The width of the

haircutting blade is in particular less than 20 mm. This

configuration offers many advantages, allowing for example a

particularly low-weight blade head since the blade head may be

narrow in configuration. This is particularly decisive for a blade

head showing a wedge configuration since even a small increase in

width of the haircutting blade will considerably increase the total

weight of the blade head. Due to the preferred angle of the placing

surface to the plane of the haircutting blade a width of less than

20 mm for the haircutting blade has shown to be particularly

advantageous.

The width of the haircutting blade is in particular less than 19 mm.

A width of less than 18 mm and in particular less than 17 mm is

likewise possible. Or else the haircutting blade may show a width of

less than 16 mm and in particular less than 15 mm. Or else the

haircutting blade may show a width of more than 20 mm and for

example more than 21 mm or more than 22 mm or else more than 23 mm.

The haircutting blade may also show a width of more than 25 mm or

more than 28 mm.

The width to length ratio of the haircutting blade is in particular

at least 1:2 and preferably at least 1:2.2 or at least 1:2.25 or

particularly preferably at least 1:2.29. Or else the width to length

ratio may be at least 1:2.3 or 1:2.4 or at least 1:2.5 or more. Such

a width to length ratio allows an ergonomic, particularly low-weight

haircutter.

In an advantageous configuration the haircutter comprises at least

one adjusting device for aligning the haircutting blade in the blade

head. The adjusting device preferably comprises at least one recess

in the haircutting blade. The recess shows in particular a closed

circumference. The adjusting device preferably comprises at least

one adjusting unit in the blade head at least partially engaging the

recess. The adjusting device in particular prohibits movability of

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the haircutting blade at least in the longitudinal direction and/or

at least transverse to the longitudinal direction. The haircutting

blade in particular form-fittingly surrounds the adjusting unit at

least in sections. The haircutting blade for example bears against

the adjusting unit with its recess in the longitudinal direction

and/or transverse to the longitudinal direction. Thus the blade can

be aligned with high precision while involving little complexity and

reliably preventing an undesirable play of the blade during cutting.

This adjusting device moreover enables fast and smooth blade

changes.

The recess in the haircutting blade is preferably configured as at

least one elongated hole. The elongated hole extends in particular

in the longitudinal direction of the haircutting blade. The

elongated hole is in particular rectangular in configuration. The

elongated hole shows in particular a closed circumference. This

recess configuration provides for particularly economic manufacture

while also offering precision and reliability for aligning the

haircutting blade in the blade head. The recess is in particular

disposed centrally in the haircutting blade. Or else, other

geometric recess shapes and/or other recess orientations in the

haircutting blade are possible. The recess may comprise sections

showing different widths and/or lengths and/or a curved and/or

polygonal shape. Or else, two or more recesses and in particular two

or more elongated holes may be provided.

The recess extends in particular over more than half and preferably

over more than three quarters and particularly preferably more than

80% of the length of the haircutting blade.

It is preferred for the recess, in particular the elongated hole, to

show a length of more than two thirds of the length of the

haircutting blade. It is likewise preferred for the recess, in

particular the elongated hole, to show a width of less than one

third of the width of the haircutting blade. Preferably the recess,

in particular the elongated hole, shows a width of more than 20% of

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the width of the haircutting blade. This ensues in a reliable

orientation while not detrimentally weakening the haircutting blade.

The recess may be shorter and/or wider or narrower in configuration.

The adjusting unit comprises in particular at least two and

preferably at least three elevations. In particular at least two

elevations are disposed at the ends of the elongated hole. In

particular at least one elevation is disposed in-between. This will

reliably prevent blade movement so as to further improve the cutting

result. The elevations extend at least partially through the recess.

The adjusting device comprises in particular at least one take-up

cavity disposed in the blade head. The take-up cavity traces an

outer contour of the haircutting blade at least in sections. The

take-up cavity is in particular rectangular at least in sections so

that it can trace a rectangular outer contour of the haircutting

blade. Due to the outer contour this take-up cavity offers a firm

seat and particularly close fit of the haircutting blade while its

manufacture is particularly low-cost.

In a preferred configuration the blade head has at least two blade

head members. The blade head comprises in particular at least one

first blade head member and at least one second blade head member

that can be detachably coupled therewith. The haircutting blade can

in particular be accommodated between the blade head members.

At least one connecting lug protrudes in particular from each of the

blade head members. The connecting lug is in particular configured

conically at least in sections. The connecting lug of the first

blade head member can in particular be pushed beneath the connecting

lug of the second blade head member and vice versa so that the

connecting lugs can be wedged to one another and the haircutting

blade can be clamped between the blade head members. The connecting

lugs can in particular be wedged to one another and preferably

wedged self-lockingly. This blade head configuration offers a

particularly tight and firm clamping of the haircutting blade so as

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to reliably avoid vibrations and movements of the haircutting blade.

This will achieve particularly good cutting results.

Other connecting devices or other connection types are likewise

possible. For example the blade head members may be connected via at

least one lug engaging with at least one undercut. Or else the blade

head members may be pivotally attached to one another via at least

one hinge or the like.

In particular the first and/or second blade head member is provided

with at least one grip accommodation for fastening the grip to the

blade head. The at least one working section is in particular

disposed in at least one blade head member and particularly

preferably in both of the blade head members. In particular both of

the blade head members show at least one worked-in recess each. The

recesses in the two blade head members combined serve in particular

for at least one shared working section. Both the blade head members

show in particular the same recess relative to the alignment line of

the longitudinal face. Both the blade head members show in

particular the same width for the two blade head members to rest

flush against the longitudinal face of the blade head.

At least one blade head member and preferably both the blade head

members are in particular equipped with at least one placing surface

each and preferably two placing surfaces each. The placing surfaces

of one blade head member are in particular incorporated therein and

joined therewith preferably integrally, in particular made of one

single material. The placing surfaces of a blade head member may be

configured separately.

Preferably at least one blade head member and preferably both the

blade head members are equipped with at least one working section

and preferably with two working sections each. Every working section

provided is in particular provided with at least one placing surface

on each of the blade head members.

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The adjusting unit is in particular disposed on the first and/or

second blade head member. In a region of the other of the blade head

members opposite the adjusting unit at least one recess is in

particular disposed which accommodates the adjusting unit when the

blade head members are installed.

At least one connecting lug and preferably both the connecting lugs

extend in particular at least partially through the recess in the

haircutting blade. This achieves a particularly compact blade head.

This arrangement is given in particular when the blade head members

are operationally coupled to one another. Then preferably at least

one connecting lug and particularly preferably both the connecting

lugs provide at least one adjusting unit for aligning the

haircutting blade. This is particularly advantageous since the

connecting lugs can thus at the same time be used for aligning the

haircutting blade. In particular is the width of the connecting lug

matched to the width of the recess so as to allow close-fit

placement.

It is possible for the first blade head member to have at least one

cutout on its side face. At least one projection of the second blade

head member in particular engages in the cutout. It is also possible

for the cutout to be disposed in the second blade head member and

the projection, in the first blade head member. This offers

particularly tight clamping of the haircutting blade. The projection

is retained in the cutout in particular by at least one spring

member. The projection may show at least one lug and/or undercut

which engages in particular in at least one undercut and/or lug in

the cutout. The side face of the blade head member is disposed in

particular transverse to the longitudinal face having the working

section. The cutout is in particular disposed in the side face

adjacent to the grip respectively the grip accommodation.

In all the configurations it is preferred for the cutting edge of

the haircutting blade to be disposed at an angle between 0.5° and 60

to the longitudinal axis of the blade head. This angle is present in

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particular when the haircutting blade is operationally accommodated

in the blade head. Preferably an angle between 20 and 40 is

provided. Particularly preferably an angle of 30 +/-0.5° is

provided. Or else the angle may be 0.10 to 100. Or else a parallel

arrangement of the cutting edge to the longitudinal axis of the

blade head is conceivable. Such an inclined position of the cutting

edge shows the advantage of further improving the cutting result.

To this end the adjusting unit is particularly preferably disposed

at such an angle to the longitudinal axis of the blade head. This

shows the advantage that the adjusting device can already specify

the desired inclined position. The inclined position of the cutting

edge may also be achieved by an angular arrangement of the recess in

the haircutting blade relative to the cutting edge of the

haircutting blade. The angle for the inclined position may also be

achieved by way of a combination of an angular arrangement of the

adjusting unit and the recess together. Also, the recess in the

haircutting blade may be disposed at such an angle to the

longitudinal axis of the blade head.

It is possible for a line segment extending orthogonally to the

alignment line of the longitudinal face to show an angle of 120 to

230 to the plane of the haircutting blade between a valley point in

which the working section is recessed furthest and where the placing

surface lies deepest above the haircutting blade, and a peak point

in which the placing surface lies highest above the haircutting

blade. Preferably an angle of 160 to 180 and particularly preferably

170 is provided. An angle of 210 is also advantageous and preferred.

It is also possible to provide an angle of at least 130 and

maximally 290 for the line segment. This configuration shows the

advantage of achieving good cutting results while simultaneously

allowing a highly versatile configuration of the placing surface

between the valley point and the peak point. The peak point lies in

particular on the elevation.

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The placing surface shows in particular an angle of 120 to 30°, in

particular 200 to 220, to the plane of the haircutting blade at

least in sections between the valley point and the peak point. The

placing surface may show an angle of 160 to 260, in particular 180

to 240, to the plane of the haircutting blade at least in sections

between the valley point and the peak point. Other angles are

likewise conceivable.

Preferably the placing surface extends at least at two different

angles between the valley point and the peak point, in particular

along the line segment. The at least two angles lie in particular

between 120 and 30°. The angles are preferably configured as

described above. The angles may be provided by means of a curved

shape of the placing surface. The placing surface may also be

straight.

The placing surface may for example extend between the valley point

and the peak point at different angles or in a convex or bent shape.

For example the placing surface may, starting out from the peak

point, first show an angle of 200 to 220 to then make a transition

to at least a flatter angle of for example 120 to 190.

In an advantageous specific embodiment the placing surface has at

least one first placing section and following behind, at least one

second placing section transverse to the longitudinal axis. The

first placing section is disposed in particular closer to the

exposed cutting edge than is the second placing section. The first

placing section shows in particular a larger angle than does the

second placing section to the plane of the haircutting blade. This

division of the placing surface provides for a particularly

controlled orientation of the hair relative to the cutting edge. The

first placing section allows to specify a particularly favorable

cutting angle. A flatter configuration of the second placing section

allows to configure the blade head considerably narrower and thus

more lightweight and ergonomically better. Or else it is possible

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for the first placing section to show a smaller angle than does the

second placing section.

The first placing section shows in particular an angle of 150 to 290

and preferably 190 to 230. The second placing section shows in

particular an angle of 120 or 130 to 150 or 180. Particularly

preferably the second placing section shows an angle of 120 to 150.

The first placing section preferably shows an angle of 210 +/-1° and

particularly preferably 210. The second placing section shows in

particular an angle of 140 to 160 or to 180. The angle may be 170 or

180. The second placing section preferably shows an angle of 150 +/

and particularly preferably 150. These angles for the first

and/or second placing sections allow particularly smooth and clean

cuts while also offering improved ergonomics of the haircutter.

Preferably the first placing section extends over less than half the

width of the placing surface. Preferably the second placing section

extends over more than half the width of the placing surface. The

first placing section in particular extends over less than one third

of the width of the placing surface and the second placing section,

over more than two thirds of the width of the placing surface. These

extensions of the placing sections offer particularly good trimming

results, allowing the blade head to glide very smoothly on the hair.

It is possible for the second placing section to extend in the

longitudinal direction at least on one side next to the working

section up to a side face of the blade head.

It is possible for the first placing section and/or the second

placing section to show a dome-like shape at least in sections, in

particular at least in the region of the exposed cutting edge in the

working section. Thus the hair comes to be particularly well placed

against and guided along the blade head. In particular the first

and/or second placing section show a concave doming so that at least

one dip ensues in the side face. Or else a convex doming is possible

so that at least one elevation ensues on the side face. It is also

possible for the first and/or second placing section to show a bent

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shape at least in sections. The bend may be disposed transverse to

the longitudinal direction and/or in the longitudinal direction of

the blade head. The first and/or second placing section may also be

plane or straight in shape.

It is possible to dispose at least one third placing section at

least on one side in the longitudinal direction adjacent to the

working section. The third placing section extends in particular at

least in sections between an elevation on the blade head extending

substantially diagonally and a section of the longitudinal face of

the blade head in which the longitudinal face shows increasing

thickness. The elevation in particular separates from one another

two working sections which are disposed on opposite longitudinal

faces of the blade head. Such a placing section allows particular

ease of disposing two working sections on opposite longitudinal

faces of the blade head without impeding the placement of the hair

against the blade head. The third placing section in particular

shows an angle to the plane of the haircutting blade between 120 and

30°. The angle of the third placing section may be smaller or equal

to the angle of the first and/or second placing section. It is also

possible for the angle of the third placing section to be larger

than the angle of the first and/or second placing section.

Preferably the blade head has at least one take-up surface for the

haircutting blade. In particular more than one fourth of at least

one of the side faces of the haircutting blade rests against the

take-up surface. It is also possible for the haircutting blade to

rest against a plurality of contact points on the take-up surface.

Such a take-up surface reliably prevents blade vibrations or

movementts during cutting. Particularly preferably more than one

fourth of both side faces of the haircutting blade rests against the

take-up surface.

The blade head shows in particular at least one depression which is

recessed from at least one of the side faces of the haircutting

blade so as to expose the side face of the haircutting blade in this

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spot. This allows a particularly advantageous weight reduction of

the blade head. This is a particular advantage for blade heads of a

metal material. Preferably at least one depression each and/or at

least one take-up surface each is provided in both the blade head

members. The take-up surface and the depression are in particular

disposed opposite one another on a blade head member.

The take-up surface is in particular disposed adjacent to the

working section. The depression is in particular disposed spaced

apart from the working section. This shows the advantage of

particularly firmly accommodating the blade where it is stressed

during cutting hair.

It is preferred for a longitudinal axis of the grip to extend on one

plane with the haircutting blade. This provides for the haircutter

to be particularly well balanced out and ergonomic. This arrangement

refers in particular to an operational state of the haircutter with

the haircutting blade accommodated. For example the haircutter

simply needs to be turned about 1800 for changing from one working

section to the opposite working section. The cutting edge of the

haircutting blade preferably lies at an angle to the longitudinal

axis of the grip. Or else the cutting edge may be aligned parallel

to the longitudinal axis of the grip.

The working section in particular shows a length which is shorter

than half the longitudinal face of the blade head. In particular is

the length of the working section shorter than one third or

preferably one fourth of the length of the longitudinal face. The

length of the working section may be shorter than one fifth or one

sixth of the length of the longitudinal face.

The width of the working section, starting out from the alignment

line of the blade head blade body, is in particular less than half

and preferably less than one fourth of the width of the blade head.

The width of the working section may be less than one fifth or less

2801P162PCT 18 29.03.2018 Campus

than one eighth of the width of the blade head. Or else a broader or

flatter working section is possible.

The working section is in particular disposed in a third and

preferably in a fourth of the longitudinal face located at one end

of the longitudinal face. A central arrangement of the working

section along the longitudinal face is also possible.

Preferably the grip and the blade head show at least one shared

balancing point. The balancing point is in particular disposed in

the grip. The balancing point is in particular understood to mean

that the haircutter is preferably in equilibrium as it rests in the

balancing point. This offers particularly precise handling. The

haircutter can thus be guided very precisely and for a prolonged

time without tiring the hand. Thus the blade head may be

sufficiently heavy to allow secure and fast trimming. The balancing

point in the grip balances the haircutter out optimally despite the

weight of the blade head so that it will not turn top-heavy.

The balancing point is in particular disposed in a half adjacent to

the blade head and preferably in a third of the grip adjacent to the

blade head. The balancing point may also be disposed in the blade

head.

Preferably at least one counterweight can be accommodated in the

grip and/or in the blade head. This offers many advantages. Thus the

user can optimally balance out his haircutter and e.g. set an

intended top-heaviness or define a balancing point. The blade head

may for example be set to a minimum weight which allows an

energetic, vigorous cut. Users having small hands may reduce the

weight by removing one or more counterweights.

The haircutter comprises in particular at least one counterweight.

Two or more counterweights may be comprised. The counterweight is,

or comprises, e.g. at least one lead weight. This provides high

weight combined with small dimensions. Other materials are likewise

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conceivable. The counterweight can in particular be inserted and

e.g. screwed into the grip and/or blade head. The grip and/or the

blade head are in particular configured hollow at least in sections.

The grip and/or the blade head may comprise an at least partially

enclosed cavity which can accommodate the counterweight. The cavity

can preferably be closed. The counterweight can be accommodated in

particular between the two blade head members.

It is possible for the grip and the blade head to show substantially

the same and in particular identical weights. The grip and the blade

head show in particular the same weight at a deviation of +/- 5 g

and preferably +/-1 g. The deviation from one another is in

particular less than 25% and preferably less than 15% and

particularly preferably less than 10%. The deviation may be larger.

Using the at least one counterweight allows in particular to set a

weight difference matched to the user. A weight difference of for

example up to 50% or else up to 100% or more than 100% may be set by

means of the counterweight.

For example the grip weighs 40 g +/-5 g and the blade head weighs 40

g +/-5 g. In addition to these weights at least one counterweight

can be received and/or removed.

The haircutting blade according to the invention is in particular

provided for a haircutter according to any of the preceding claims.

The haircutting blade comprises at least one cutting edge and

preferably at least two cutting edges and at least one recess for an

adjusting device for aligning the haircutting blade in a blade head.

The width of the haircutting blade corresponds to maximally half the

length of the haircutting blade.

This width to length ratio allows particular ease of inserting the

inventive haircutting blade into a blade head having an angular

placing surface and preferably into the inventive haircutter.

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The haircutting blade is in particular configured as it has been

described with reference to the haircutter.

Preferably the haircutting blade shows a rectangular outer contour,

in particular with rounded corners. This shape allows manufacturing

the blade and a take-up cavity provided therefor in the blade head

with particular dimensional consistency and also cost-effectively.

This provides accommodation of the blade in the blade head with

particularly little play. The corners provided may also be

rectangular or non-rounded.

The recess is particularly preferably configured as a rectangular

elongated hole. The rectangular elongated hole has in particular

rectangular corners respectively non-rounded corners. This provides

for a secure seat and close fit on the adjusting unit. The adjusting

unit is in particular also configured with matching, rectangular

corners or edges.

It is preferred for the recess to extend over more than 20% of the

width of the haircutting blade. It is also preferred for the recess

to extend over more than 75% of the length of the haircutting blade.

Preferably the recess extends over more than 25% of the width and/or

over more than 85% of the length. This offers a particularly firm

seat of the haircutting blade in the blade head respectively on the

adjusting unit. Moreover this recess allows particularly economic

manufacturing of the adjusting unit required therefor, including

high-precision close fit.

All the provided working sections in particular provide for one

single shared haircutting blade. The haircutting blade is for

example equipped with two opposite cutting edges to provide opposite

working sections with one cutting edge each. The haircutting blade

shows in particular at least two cutting edges, in particular on its

longitudinal faces.

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The particulars regarding angles may relate to medium angles. This

is in particular the case in configurations where the placing

surface comprises two or more placing surfaces and/or shows a domed

or curved shape. The medium angle refers for example to a line

segment between a valley point and a peak point.

The grip in particular comprises, or is configured as, an elongated

shaft.

Further advantages and features of the present invention can be

taken from the exemplary embodiments which will be discussed below

with reference to the enclosed figures.

The figures show in:

Fig. 1 a schematic illustration of a haircutter according to the

invention in a perspective view;

Fig. 2 a schematic illustration of a blade head member of the

haircutter in a view of a side face;

Fig. 3 a schematic illustration of the blade head member in a view

of the other side;

Fig. 4 a schematic illustration of the blade head member in a

sectional view on the cutting line A-A in Fig. 3;

Fig. 5 a schematic illustration of the blade head member in a front

view;

Fig. 6 a schematic illustration of the blade head member in a

sectional view on the cutting line B-B in Fig. 3;

Fig. 7 a schematic illustration of the blade head member in a rear

view;

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Fig. 8 a schematic illustration of another blade head member of the

haircutter in a view of a side face;

Fig. 9 a schematic illustration of another blade head member in a

view of the other side;

Fig. 10 a schematic illustration of the blade head member in a

sectional view on the cutting line A-A in Fig. 9;

Fig. 11 a schematic illustration of the blade head member in a rear

view;

Fig. 12 a schematic illustration of the blade head member in a

sectional view on the cutting line B-B in Fig. 9;

Fig. 13 a simplistic illustration of a cross-section of a blade

head; and

Fig. 14 a simplistic illustration of a haircutting blade in a side

view.

Figure 1 shows a haircutter 1 according to the invention having a

blade head 2 and accommodated therein, a haircutting blade 4. A grip

is attached to the blade head 2 so that the longitudinal axes of

the grip 10 and the blade head 2 are oriented in the same direction.

This blade head 2 comprises two opposite working sections 3 offset

to one another which are recessed relative to an alignment line 120

of a longitudinal face 12. This haircutting blade 4 comprises two

opposite cutting edges 14 each of which is accessible in one working

section 3 only. The recess of the working sections 3 is configured

bent.

The blade head 2 comprises two blade head members 121, 122 between

which the haircutting blade 4 is accommodated. The first blade head

member 121 is connected with the grip 10. The second blade head

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member 122 is attached to the first blade head member 121 for which

it serves as a cover. The two blade head members 121, 122 rest flush

against the longitudinal faces 12.

Each of the blade head members 121, 122 provides a side face 22, 32

of the blade head 2. Each of the side faces 22, 32 shows a

substantially diagonal elevation 52 which separates the two opposite

working sections 3 from one another.

The blade head 2 comprises a guiding device 5 which guides the hair

during cutting at a defined angle along the blade head 2. The

guiding device 5 provides two placing surfaces 15 for each of the

working sections 3. Thus, each of the working sections 3 is provided

with one placing surface 15 on each of the side faces 22, 32. The

placing surfaces 15 on the side face 22 are not visible in this

illustration.

The two placing surfaces 15 disposed on one shared side face 22, 32

are separated from one another by the elevation 52.

The guiding device 5 is configured integrally with the blade head 2.

Thus result the placing surfaces 15 from a wedge-shaped design of

the blade head 2 or its blade head members 121, 122.

The grip 10 and the blade head 2 show one shared balancing point 20

disposed in the grip 10. The grip 10 is provided with a hollow space

which can accommodate a counterweight 9. This is for example a lead

weight 9 having such a weight as to obtain a grip 10 having the same

weight as does the blade head 2. Then the haircutter 1 is in

equilibrium or in a level position as it rests on the balancing

point 20.

Figure 2 illustrates the first blade head member 121 in a view of

the side face 22. The longitudinal axis 42 of the blade head 2 is

inserted as a dash-dotted line. The side faces 123 extend transverse

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to the longitudinal axis 42. The grip accommodation 11 is disposed

on one of the side faces 123.

The placing surfaces 15 each comprise three placing sections 151,

152, 153. The first placing section 151 is disposed in the region of

the working section 3. The second placing section 152 is located

behind, transverse to the longitudinal axis 42. The third placing

section 153 is disposed in the direction of the longitudinal axis 42

laterally adjacent to the two placing sections 151, 152. The

thickness of the blade head member 121 increases along the

longitudinal face 12 in the region of the third placing section 153.

The first placing section 151 is concave, dome-like, so as to

provide a dip in the region of the working section 3. The first

placing section 151 shows a larger angle to the plane of the

haircutting blade 4, which is not shown, than does the second

placing section 152. The first placing section 151 extends over less

than half the width of the entire placing surface 15.

Figure 3 shows the side of the blade head member 121 opposite the

side face 22. On this side the adjusting device 6 for aligning the

haircutting blade 4 and the coupling device 7 for attaching the

second blade head member 122 and the take-up surfaces 62 for the

haircutting blade 4 can be particularly clearly recognized.

A take-up surface 62 adjacent to each of the working sections 3 is

provided against which the haircutting blade 4 rests when

operational, making contact. One depression 72 each for reducing

weight is worked into the blade head 2 in the direction of the

longitudinal axis 42 next to the take-up surface 62.

The adjusting device 6 comprises an adjusting unit 26 at the blade

head member 121 comprising three elevations 66 on this blade head

member 121. The adjusting device 6 moreover comprises in the

haircutting blade 4 a recess 16 described in more detail with

reference to the Figure 14. The elevations 66 engage the recess 16

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so as to prohibit movement of the haircutting blade in its

longitudinal direction and also transverse to its longitudinal

direction.

The adjusting device 6 moreover comprises a take-up cavity 86

recessed in the blade head member 121 matched to the outer contour

of the haircutting blade 4. The depth of the take-up cavity 86

corresponds at least approximately to the thickness of the

haircutting blade 4.

The adjusting unit 26 is disposed at an angle or inclination to the

longitudinal axis 42 of the blade head 2 with its three elevations

66. The take-up cavity 86 also shows an angular arrangement. Thus

the inserted haircutting blade 4 is aligned by its cutting edges 14

at a defined angle to the longitudinal axis 42 respectively to the

longitudinal faces 12 of the blade head 2. The angle of the inclined

position is for example 30.

The coupling device 7 comprises a connecting lug 17 which can be

wedged with a connecting lug 27 shown in the Figure 9, of the other

blade head member 122. To this end the connecting lugs 17, 27 show a

wedge-shaped or conical design.

For clamping the haircutting blade 4 the cover 122 is pushed onto

the first blade head member 121 in the longitudinal direction so

that one of the connecting lugs 17 grasps beneath the other of the

connecting lugs 27 and vice versa. The two blade head members 121,

122 are brought toward one another so as to firmly clamp the

haircutting blade 4. Vibrations of the blade 4 during cutting can

thus be effectively prevented.

The connecting lug 17 serves at the same time as the elevation 66

for the adjusting device 6. To this end the connecting lug 17

preferably has a width closely fitting the width of the recess 16 of

the haircutting blade 4.

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Figure 4 shows the first blade head member 121 in a sectional

illustration on the line A-A of the Figure 3. A cutout 37 of the

coupling device 7 serves to accommodate a projection 47 of the

second blade head member 122 shown in the Figure 8. The projection

47 is inserted into the cutout 37 as the cover 122 is attached while

the connecting lugs 17, 27 are wedged to one another.

The cutout 37 may be provided with a spring member, not shown in

detail, prohibiting exit of the projection 47 from the cutout 37. To

this end the spring member preferably engages an undercut provided

in the projection 47.

Figure 5 shows a front view of the blade head member 121

respectively a view of the side face 123.

Figure 6 shows the blade head member 121 in a sectional illustration

on the line B-B in Fig. 3.

Figure 7 shows the blade head member 121 in a rear view revealing

the grip accommodation 11. This illustration shows particularly

clearly that the longitudinal axis of the grip 10 extends in one

plane with the haircutting blade 4 accommodated in the blade head 2.

Figure 8 shows the second blade head member 122 or the cover for the

first blade head member 121 in a top view of the side face 32. The

second blade head member 122 is configured in analogy to the first

blade head member 121 and likewise comprises two opposite working

sections offset to one another so that the second blade head member

122 illustrates a kind of second side half of the first blade head

member 121. The working sections 3 and the placing surfaces 15 are

also configured in analogy to the first blade head member 121.

On the side face 123 the blade head member 122 shows a projection 47

which, as the two blade head members 121, 122 are brought together,

is inserted into the cutout 37.

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Figure 9 shows the side of the blade head member 122 facing the

haircutting blade 4. This blade head member 122 is again provided

with take-up surfaces 62 for the haircutting blade 4 in the region

of the working sections 3. In the longitudinal direction adjacent

thereto and on the opposite longitudinal face 12, pertaining

depressions 72 are provided in which the haircutting blade 4 is

exposed. The blade head member 122 serving as a cover is not

provided with a grip accommodation 11.

The connecting lug 27 of the coupling device 7 is configured in

analogy to the connecting lug 17 of the other of the blade head

members 121 and likewise serves as an elevation 66 for the adjusting

device 6. The adjusting unit 6 of the second blade head member 122

comprises two adjusting recesses 76 in which the two outer

elevations 66 of the first blade head member 121 engage when the two

members 121, 122 are coupled to one another.

Figure 10 shows the blade head member 122 in a sectional

illustration on the line A-A of Figure 9. The connecting lug 27

corresponding to the connecting lug 17 of the first blade head

member 121 and also the adjusting recesses 76 can be seen

particularly clearly. One can particularly clearly also see the

projection 47 which is configured with an undercut.

Figure 11 shows the second blade head member 122 in a rear view

respectively in a view of the side face 123 with the projection 47.

Figure 12 shows the second blade head member 122 in a sectional

illustration on the line B-B of Figure 9.

Figure 13 shows a simplistic illustration of a blade head 2 of the

inventive haircutter 1 and a haircutting blade 4 accommodated

therein. The cross-section of the blade head 2 is shown in the

region of the maximum recess in the working section 3.

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The two side faces 22, 32 of the blade head 2 are each configured

with a first placing section 151 and a second placing section 152.

Each of the side faces 22, 32 is provided by a blade head member

121, 122. The first placing section 151 is narrower in configuration

than the second placing section 152.

The first placing section 151 extends at a larger angle 301 to the

plane of the haircutting blade 4 than does the second placing

section 152 which is disposed at an angle 302 to the plane of the

haircutting blade 4. The first placing section 151 starts at a

valley point 201 where the placing surface 15 or the first placing

section 151 lies deepest above the haircutting blade 4. Also, the

working section 3 is recessed deepest in the valley point 201 shown.

The first placing section 151 then makes a transition to the second

placing section 152. The second placing section 152 ends in a peak

point 202 where the placing surface 15 or the 2nd placing section

152 is highest above the haircutting blade 4.

The first placing section 151 shows for example an angle 301 of 210.

The second placing section 152 shows for example an angle 302 of

150.

In the configuration of the haircutter 1 shown the side faces 22, 32

are configured such that the pertaining valley point 201 has a

particular relationship to the pertaining peak point 202. A line

segment 200 extending at right angles to the longitudinal face 12

respectively to the alignment line 120 of the blade head 2 between

the valley point 201 and the peak point 202 is disposed at a defined

angle 303. The angle is for example 170.

The three angles 301, 302, 303 result in a placing surface 15

allowing a particularly favorable cutting angle for the hair guided

alongside and also allows a compact design of the blade head 2.

Figure 14 shows a top view of the haircutting blade 4 according to

the invention. The haircutting blade 4 is provided with two opposite

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cutting edges 14. This haircutting blade 4 is rectangular with

rounded corners.

In the side face 44 of the haircutting blade 4 a recess 16 is formed

which is configured as a rectangular, elongated hole 36. The

elongated hole 36 shows rectangular or non-rounded corners. The

length 46 of the elongated hole 36 corresponds to the distance of

the two outer elevations 66 of the adjusting device 6 of the blade

head 2. The width 56 of the recess 36 corresponds to the width of

the adjusting unit 26 respectively the elevations 66 of the blade

head 2.

The haircutting blade 4 shows a width 24 showing a ratio of 1:2.29

to the length 34. The width 24 is for example 19 mm. The length 34

is for example 43.5 mm. The thickness of the haircutting blade 4 is

for example 0.1 mm. The width 24 of the recess (16) is 5 mm and the

length (34) is 37.2 mm.

These dimensions of the haircutting blade 4 are particularly

suitable for the haircutter 1 described above since they result in

particularly advantageous angles for the placing surfaces 15 without

making the blade head 2 bulky.

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List of reference numerals:

1 haircutter 42 longitudinal axis

2 blade head 44 side face

3 working section 46 length

4 haircutting blade 47 projection

guiding device 52 elevation

6 adjusting device 56 width

7 coupling device 62 take-up surface

9 counterweight 66 elevation

grip 72 depression

11 grip accommodation 76 adjusting recess

12 longitudinal face 86 take-up cavity

14 cutting edge 120 alignment line

placing surface 121 blade head member

16 recess 122 blade head member

17 connecting lug 123 side face

balancing point 151 placing section

22 side face 152 placing section

24 width 153 placing section

26 adjusting unit 200 line segment

27 connecting lug 201 valley point

32 side face 202 peak point

34 length 301 angle

36 elongated hole 302 angle

37 cutout 303 angle

Claims (29)

Claims:

1. Haircutter for trimming and styling hair, in particular hair on a head, having at east one grip and at least one blade head connected with the grip, wherein at least one longitudinal face of the blade head has at least one working section disposed thereat which is recessed from an alignment line of the longitudinal face and wherein at least one haircutting blade having at least one cutting edge can be accommodated in the blade head and disposed so that its cutting edge in the working section is at least partially exposed and does not protrude beyond the alignment line, wherein the blade head comprises at least one guiding device having at least one placing surface for the hair to be trimmed and wherein the placing surface is at least partially disposed at an angle between 160 and 260 to the plane of the haircutting blade that can be accommodated in the blade head so that the hair to be trimmed lies at a defined angle to the cutting edge as the placing surface is placed against the hair, wherein the placing surface comprises at least one first placing section and following behind at least one second placing section transverse to the longitudinal axis and that the second placing section shows an angle of 120 to 180 and that the first placing section is disposed closer to the exposed cutting edge than is the second placing section.

2. The haircutter according to claim 1, comprising at least one haircutting blade.

3. The haircutter according to any one of the preceding claims wherein the placing surface is at least partially disposed at an angle of substantially 210 to the plane of the haircutting blade accommodated in the blade head.

4. The haircutter according to any one of the preceding claims wherein the placing surface and the blade head are configured connected with one another as one piece and wherein the placing surface is provided by a wedge shape of the blade head.

5. The haircutter according to any one of the preceding claims wherein the placing surface is provided by a convex shape of the blade head.

6. The haircutter according to any one of the preceding claims wherein the blade head comprises two side faces, a front face and a rear face, and wherein the two side faces show at least one placing surface each, the placing surfaces being jointly assigned to one shared working section.

7. The haircutter according to any one of the preceding claims wherein the blade head comprises two side faces namely, a front face and a rear face, and wherein each side face includes at least two placing surfaces each of which being assigned to a different working section on opposite longitudinal faces of the blade head.

8. The haircutter according to any one of the preceding claims, comprising at least one adjusting device for aligning the haircutting blade in the blade head, the adjusting device comprising at least one recess in the haircutting blade and at least one adjusting unit in the blade head at least partially engaging the recess so as to prohibit movement of the haircutting blade at least in the longitudinal direction and/or at least transverse to the longitudinal direction.

9. The haircutter according to claim 8 wherein the recess is configured as at least one elongated hole extending in the longitudinal direction of the haircutting blade and being rectangular in shape.

10. The haircutter according to any one of the two preceding claims wherein the adjusting device comprises at least one take-up cavity disposed in the blade head and tracking at least portions of an outer contour of the haircutting blade.

11. The haircutter according to any one of the three preceding claims wherein the elongated hole shows a length of more than two thirds of the length of the haircutting blade and/or wherein the elongated hole shows a width of less than one third of the width of the haircutting blade.

12. The haircutter according to claim 8 wherein the adjusting unit comprises at least three elevations and wherein at least two elevations are disposed at the ends of the elongated hole and at least one elevation, is in-between.

13. The haircutter according to any one of the preceding claims wherein the blade head comprises at least two blade head members, comprising at least one first blade head member and at least one second blade head member for detachably coupling thereto, wherein the haircutting blade can be received between the blade head members and wherein at least one connecting lug protrudes from each of the blade head members and wherein the connecting lug of the first blade head member can be pushed beneath the connecting lug of the second blade head member and vice versa, so that the connecting lugs are wedged to one another and the haircutting blade is clamped between the blade head members.

14. The haircutter according to claim 13 wherein at least one connecting lug, preferably both of the connecting lugs, extend(s) at least partially through the recess in the haircutting blade.

15. The haircutter according to any one of the two preceding claims wherein the first blade head member shows on its side face at least one cutout in which at least one projection of the second blade head member engages.

16. The haircutter according to claim 8 wherein the cutting edge of the haircutting blade is disposed at an angle between 0.5° and 60 to the longitudinal axis of the blade head to which end in particular the adjusting unit is disposed at such an angle to the longitudinal axis of the blade head.

17. The haircutter according to any one of the preceding claims wherein a line segment extending orthogonally to the alignment line of the longitudinal face shows an angle of 120 to 230, in particular 16° to 18°, to the plane of the haircutting blade between a valley point in which the working section is recessed furthest and where the placing surface lies deepest above the haircutting blade, and a peak point in which the placing surface lies highest above the haircutting blade.

18. The haircutter according to claim 17 wherein the placing surface at least partially shows an angle of 120 to 30°, in particular 200 to 220, to the plane of the haircutting blade between the valley point and the peak point.

19. The haircutter according to any one of the preceding claims wherein the first placing section shows a larger angle than does the second placing section.

20. The haircutter according to any one of the preceding claims wherein the first placing section shows an angle of 190 to 230 and/or wherein the second placing section shows an angle of 120 to 150.

21. The haircutter according to claim 19 or 20 wherein the first placing section extends over less than half the width of the placing surface and/or wherein the second placing section extends over more than half the width of the placing surface.

22. The haircutter according to any one of claims 18 to 21 wherein the first placing section and/or the second placing section show a dome-like shape at least in sections.

23. The haircutter according to any one of claims 18 to 22 wherein at least on one side in the longitudinal direction next to the working section at least one third placing section is disposed which extends at least in sections between an elevation on the blade head extending substantially in a diagonal and a section of the longitudinal face of the blade head in which the longitudinal face shows increasing thickness.

24. The haircutter according to any one of the preceding claims wherein the blade head comprises at least one take-up surface for the haircutting blade and wherein more than one fourth of at least one of the side faces of the haircutting blade bears against the take-up surface and/or wherein the haircutting blade bears against the take-up surface in a multitude of contact points.

25. The haircutter according to any one of the preceding claims wherein the blade head shows at least one depression which is recessed relative to at least one of the side faces of the haircutting blade so as to expose the haircutting blade.

26. The haircutter according to claims24 or 25 wherein the take-up surface is disposed adjacent to the working section and wherein the depression is disposed spaced-apart from the working section.

27. The haircutter according to any one of the preceding claims wherein a longitudinal axis of the grip extends on one plane with the haircutting blade.

28. The haircutter according to any one of the preceding claims wherein the grip and the blade head show at least one shared balancing point disposed in the grip.

29. The haircutter according to any one of the preceding claims wherein at least one counterweight can be accommodated in the grip and/or in the blade head.