EP4039425A1 - Blade set for a hair clipper - Google Patents

Abstract

The invention relates to a set of blades for a hair clipper (10), which has a base body (12) and a set of blades (14) firmly connected thereto, the set of blades (14) having a fixed blade (16) and a moving blade (18) wherein the moving blade (18) has a base portion (20) with a tooth end (22) with a plurality of teeth (24) formed parallel to one another, the teeth (24) in the longitudinal direction of the hair clipping machine (10) in one The cutting area (28) of the set of blades (14) extend outwards with their tooth tips (26). The blade set according to the invention is characterized in that the teeth (24) of the moving blade (18) are dimensioned in such a way that their width (B) in the area of the respective tooth tip (26) is significantly smaller than a distance (A) between two adjacently arranged teeth (24).

Description

The invention relates to a set of blades for a hair clipper according to the preamble of claim 1 and a blade according to the preamble of claim 10.

Electric hair clippers have been known for a long time and include, among other things, a set of blades which is provided at a front end of the housing of the hair clipper and is suitable for cutting hair.

The blade set of a hair clipper generally has two blades, on the one hand a fixed blade that comes into contact with the skin of the person or animal to be treated or the user, namely the so-called clipping comb, and a moving blade, too called a razor. Each blade has a series of spaced apart teeth, with the teeth typically being regularly spaced from one another.

Both blades of a blade set usually also have a toothed edge that corresponds to the hair or skin of the person or animal to be treated. The two blades of the blade set are arranged in such a way that the respective tooth edges overlap one another. In operation, the moveable blade reciprocates relative to the fixed or stationary blade to perform the cutting operation. With this reciprocation, the toothed edge of the movable blade cooperates with the teeth of the fixed blade to allow hair caught between each tooth to be cut in a scissoring motion.

Thus, as the teeth of the moving blade reciprocate across the teeth of the fixed blade, the strands of hair that enter between the teeth of the fixed blade are cut.

The moving blade is also referred to below as a razor blade or simply as a "knife". The fixed blade is also known as a shearing comb or simply a "comb".

The hair is cut when the cutting elements, ie the teeth, of the clipping blade are moved over the corresponding blade pieces of the stationary clipping comb.

The hairs that are in the area between the teeth during this shearing movement are cut off.

A distinction is usually made between two types of hair cutting, namely cutting hair at a specific distance from the skin of the person or animal to be treated and cutting and removing hair close to the skin.

Both types of hair cutting require that the cutting should be done with sufficient cutting power, i.e. both quickly and thoroughly, i.e. all hair in the area that is swept over with the hair clipper should be removed in one operation and as tug-free as possible, so that precise work is possible and cutting is comfortable for the person being treated.

Cutting close to the skin also has the additional requirement of not causing any skin injuries to humans or animals. The occurrence of such injuries is possible when the distance between the tip of the clipper comb and the tip of the clipper blade is minimal, so that both tips almost overlap. However, a minimum distance between the tip of the clipping comb and the tip of the clipping blade is required for cutting longer hair close to the skin with trimmers or hair clippers. Electric razors, which are based on a different cutting concept, also cut close to the skin, but are not suitable for cutting longer hair, only for cutting very short hair or hair stubble.

In order to avoid injuries to the skin, according to the prior art, the cutting edge of the movable blade is offset backwards relative to the fixed blade, namely the blade facing the skin, so that the fixed blade serves as a spacer or spacer protection to prevent skin penetration in the cutting area and cutting into the skin of the person to be treated.

However, these spacers mean that the cutting knives known in the prior art, ie the movable blades, used for cutting close to the skin can only insufficiently trim the treated hair area without there being a risk of skin irritation or injuries.

The object of the present invention is therefore to provide a set of blades for an electric hair clipper and a moving blade of a set of blades which has an improved cutting performance for cutting hair close to the skin, while at the same time ensuring that no skin injuries are caused in the process. having.

This object is achieved by a set of blades for a hair clipper having the features of claim 1 and by a blade having the features of claim 10. Furthermore, the above task is solved by a hair clipper having the features of claim 15 .

Preferred embodiments and developments of the blade set according to the invention and of the blade according to the invention result from the dependent claims.

In order to solve the above task, a set of blades for a hair clipper is provided according to the invention, which is characterized by a special geometry of the shearing blade of the set of blades.

The set of blades according to the invention for a hair clipper, which has a base body and the set of blades connected thereto, comprises a fixed blade and a moving blade in a manner known per se. The moving blade has a base portion with a tooth end having a plurality of mutually parallel teeth, the teeth extending longitudinally of the hair clipper in a cutting region of the blade set with their tooth tips outward. The blade set according to the invention is characterized in that the teeth of the moving blade are dimensioned in such a way that their width B in the region of the respective tooth tip is significantly smaller than a distance between two adjacently arranged teeth.

The feed rate of the hairs into the cutting area of the blade set is significantly influenced by the width of the tooth tips. It should be noted that the feeding rate corresponds to the proportion of hairs that penetrate the cutting area in relation to the hairs that do not penetrate through obstacles placed in the penetration area and are therefore not cut.

Due to the very narrow teeth of the moving blade according to the invention, more hair can penetrate between the gaps between the teeth of the shaving comb and advance unhindered into the cutting area, so that a significantly larger number of hairs can be cut with one cutting movement.

A particularly preferred embodiment of the invention provides that the distance A between the adjacent teeth of the moving blade is preferably at least three times or more than the width B of the tooth tips of the teeth of the moving blade. In even more preferred embodiments of the present invention, the A:B ratio is in a range from 3 to 20. For example, in the case of an A:B ratio of 20 and a tooth tip width B of 0.1 mm, the distance A between the teeth is 2 mm . The particularly narrow design of the teeth ensures that the distance between the individual teeth is used effectively during the cutting process, in that a larger number of hairs can be cut with one cutting movement, without the dimensions of the cutting area and thus of the entire hair clipper in the to increase the width direction substantially.

Preferably, the width B of the tooth tips of the teeth of the moving blade is substantially in the range of less than 0.24 mm and in particular in a range between 0.10 mm and 0.24 mm and more preferably in the range of 0, 13-0.19mm. In further specific embodiments of the present invention, the width B of the tooth tips is 0.14 and 0.18 mm.

The range of the width of the tooth tips from 0.13 to 0.19 mm of the tooth tips of the teeth of the moving blade represents an optimum, since the highest feed rate could theoretically be achieved with infinitesimally narrow tooth tips. With such narrow tooth tips, it is ensured that the mechanical load capacity is adequately guaranteed. It should be noted that the tooth tips of the teeth of the moving blade known from the prior art have a width which is in the range of 0.28 mm.

The width B of the tooth tips of the teeth of the moving blade is not necessarily measured at the edge, ie at the leading edge, of the tooth tips. It can also be measured slightly below the front edge in the case of tooth tips that do not have a linear contour, but rather are wavy and/or arched.

Although the linear leading edge is considered to provide the best performance, other leading edge shapes also represent other preferred embodiments of the present invention.

Each individual tooth preferably extends in a pointed manner towards the end of the tooth and in particular in the form of a regular or irregular truncated pyramid, so that a very narrow design of the teeth can be realized without impairing the stability of the teeth when cutting hair and thus the cutting effect. The term "truncated pyramid" refers to a geometric shape that is created by cutting off a smaller, similar pyramid (a so-called "supplementary pyramid") from an initial pyramid parallel to the bases on the lateral surfaces. The two parallel faces of a truncated pyramid are similar to each other. The larger of these two areas is referred to as the base area, the smaller as the top area. The distance between the base and top surface is called the height of the truncated pyramid.

The volume of a truncated pyramid can be calculated using the following formula: $$V=\frac{H}{3}\left(A_1+\sqrt{A_1\ast A_2}+A_2\right)$$

A ₁ stands for the base area, A ₂ for the top area and h for the height of the truncated pyramid.

There is no simple formula for the lateral surface composed of trapezoids. The more slanted the pyramid or the truncated pyramid is, the larger the associated surface area is. Striving base surface to cover surface against a circle one gets a truncated cone as a geometric "extreme", if A ₂ strives towards A _{1 one} gets as a further geometric "extreme" a prism whose volume formula is correspondingly simplified by A ₁ = A ₂ = A and strives for A ₂ against 0 you get a pyramid.

In the present case, the shape of the truncated pyramid lies in the area between the two geometric extremes of a truncated cone and a prism.

The ratio between the width B of the tooth tips of the teeth of the moving blade and the width B' of a tooth base is preferably in a range of 1:1.25 to 1:3 and in a preferred embodiment is 1:2, in still further preferred embodiments of the invention 1:1.5 and 1:2.5. The upper value of the range, ie a ratio of 1:3, also leads to the effect according to the invention. A particularly stable and also effective formation of the individual teeth is thus realized.

It is particularly preferred if the tooth tips of the teeth of the moving blade are formed such that they extend substantially perpendicularly to the longitudinal axis of the hair clipper.

Another particularly advantageous embodiment of the invention provides that the tooth tips of the teeth of the moving blade are essentially flat and, in the width direction, essentially perpendicular to a surface that serves as a cutting edge and downwards in the longitudinal direction of the respective tooth extends, run, wherein an opposite end of the respective tooth tip is rounded.

A rounding of the edge at the top of the moving blade tooth, in the most preferred embodiment of 90° +/- 4°, ensures that there is no knife edge caused by the back and forth movement of the moving blade, or the Shearing knife, like a kitchen knife can cut into the skin of the person to be treated. In further preferred embodiments, the angle is in a range from 81° to 98°, more preferably from 83° to 96°, for example at a value of 85° or 95°.

This tooth tip geometry with the almost right-angled design of the moving blade in the area of the tooth tips is particularly advantageous when cutting perpendicularly to the skin surface in order to avoid damage to the skin of the person to be treated.

The flat and wide tooth tip also offers improved cutting performance when cutting parallel to the skin surface, since the hair to be cut is caught by the wide edge of the teeth over a longer section of hair and guided into the cutting area without leaving the cutting area over the front edge of the teeth. to be able to "slip away", as is disadvantageously the case with a pointed tooth tip. With a tapered tooth tip, as is known in the prior art, the hair bends slightly over the bevel of the tip and is broken by the reciprocating motion of the blade accelerated, resulting in a forward force that actively pushes the hair lying over the slope away from the cutting area like a downhill force.

The area adjoining the cutting edge is 90°, preferably in a range from 81° to 98°, as explained in more detail above, i.e. this effect can even be achieved with an angle slightly smaller or slightly larger than 90°.

The tooth tips preferably have a front edge which is essentially linear, with their end sections running essentially perpendicular to the front edge or being partially and/or completely rounded.

Although the linear configuration of the leading edges is to be regarded as particularly preferred, the tooth tips can also have a rounded leading edge and/or a wavy-shaped leading edge, without impairing the advantageous properties of the moving blade.

The object according to the invention is further achieved by a blade for a set of blades for a hair clipper. The blade is a moving blade having a base portion and a tooth end, the blade having a plurality of parallel teeth extending longitudinally of the hair clipper in a cutting portion of the set of blades with their tooth tips outward extend. The blade according to the invention is characterized in that the teeth of the moving blade are dimensioned in such a way that their width B in the region of the respective tooth tip is significantly smaller than a distance A between two adjacently arranged teeth.

Preferably, the width B of the tooth tips of the teeth is essentially in the range of less than 0.24 mm, preferably in a range between 0.10 mm and 0.24 mm, and particularly preferably in the range of about 0.13 - 0. 19mm In further specific embodiments of the present invention, the width B of the tooth tips is 0.14 and 0.18 mm.

The range of 0.13 to 0.19 mm width of the tooth tips of the teeth of the moving blade represents an optimum, as already stated above, since the highest feed rate could theoretically be achieved with infinitesimally narrow tooth tips.

More preferably, the tooth tips of the teeth of the blade according to the invention are formed substantially flat and extend in the width direction substantially perpendicular to a surface serving as a cutting edge and extending downward in the longitudinal direction of each tooth, with an opposite end of each tooth tip preferably is rounded.

Preferably, the tooth tips of the blade according to the invention have an edge which is essentially linear, with their end sections running essentially perpendicular to the edge or being partially and/or completely rounded, and with a region adjoining the cutting edge having a permanently connected blade, outgoing at an angle in a range from 81 to 98°, most preferably 90°, as has already been explained in more detail above, to which explicit reference is also made here.

However, the blade according to the invention can also be designed in such a way that the tooth tips have a rounded edge and/or a wavy edge.

According to the invention, a hair clipper is also provided with a housing body and a set of blades according to the invention connected thereto.

Advantageous further developments and embodiments result from the subclaims and from the following exemplary embodiments, as shown in more detail in the drawings.

Fig. 1

eine perspektivische Teilansicht einer erfindungsgemäßen Haarschneidemaschine mit dem erfindungsgemäßen Klingensatz gemäß einer Ausführungsform der vorliegenden Erfindung;

Fig. 2

eine Draufsicht auf eine sich bewegende Klinge nach dem Stand der Technik;

Fig. 3

eine Draufsicht auf eine sich bewegende Klinge gemäß einer Ausführungsform der vorliegenden Erfindung;

Fig. 4

eine vergrößerte Teilansicht einer sich bewegenden Klinge im Bereich der Zähne gemäß Fig. 3;

Fig. 5

eine Seitenansicht einer sich bewegenden Klinge gemäß Fig. 3;

Fig. 6

eine vergrößerte Teilseitenansicht im Bereich eines Zahnes der sich bewegenden Klinge gemäß Fig. 5;

Fig. 7

eine vergrößerte Teilseitenansicht im Bereich eines Zahnes der sich bewegenden Klinge nach dem Stand der Technik;

Fig. 8

eine vergrößerte Teilseitenansicht im Bereich eines Zahnes der sich bewegenden Klinge, wie in Fig. 6 dargestellt.

Fig.9

eine schematische Seitenansicht auf eine erfindungsgemäße Haarschneidemaschine mit eingebautem erfindungsgemäßen Klingensatz;

Fig. 9a

eine vergrößerte Darstellung des Klingensatzes gemäß Fig. 9 im Bereich der Zahnspitzen.

They show:

1

a perspective partial view of a hair clipper according to the invention with the blade set according to the invention according to an embodiment of the present invention;

2

Figure 12 is a plan view of a prior art moving blade;

3

Figure 12 is a plan view of a moving blade according to an embodiment of the present invention;

4

FIG. 12 is an enlarged partial view of a moving blade in the area of the teeth according to FIG 3 ;

figure 5

a side view of a moving blade according to FIG 3 ;

6

Fig. 12 is an enlarged partial side view in the region of a moving blade tooth figure 5 ;

7

Figure 12 is an enlarged partial side view in the area of a tooth of the prior art moving blade;

8

an enlarged partial side view in the area of a tooth of the moving blade, as in FIG 6 shown.

Fig.9

a schematic side view of a hair clipper according to the invention with a built-in set of blades according to the invention;

Figure 9a

according to an enlarged view of the blade set 9 in the area of the tooth tips.

In figure 1 1 is a partial perspective view of a hair clipper 10 of the present invention having the blade assembly 14 of the present invention in accordance with an embodiment of the present invention. The hair clipper 10 has a base body 12 to which the set of blades 14 is connected.

The blade assembly 14 includes a fixed blade 16 and a moving blade 18 which are linked together, as shown in FIG 1 As can be seen, the moving blade 18 is positioned on the underlying fixed blade 16. The stationary blade 16 is in contact with the skin of the person to be treated or of the user and is also referred to as a so-called shearing comb or just a comb.

Both the fixed blade 16 and the moving blade 18 have a toothed edge and are stacked such that the respective toothed edges overlap. During operation, the two blades 16 and 18 reciprocate relative to one another to enable a cutting operation.

Both the fixed blade 16 and the moving blade 18 of the in 1 set of blades 14 shown, have a base section not shown here, via which the two blades are connected to each other and also to the main body of the hair clipper.

In 3 the moving blade 18 is shown in plan view. The blade 18 has a base section 20 which includes a tooth end 22 with a large number of parallel teeth 24, the teeth 24 extending in the longitudinal direction of the hair clipper in a cutting area of the blade set with their tooth tips 26 outwards.

The teeth 24 of the moving blade 18 are, as in 3 shown, dimensioned such that its width B in the region of the respective tooth tip 26 is significantly smaller than a distance A between two adjacently arranged teeth 24. The width B is in the range of less than 0.24 mm. The width can definitely be in a range between 0.10mm and 0.24mm. A width of 0.18 mm or 0.16 mm is regarded as a particularly preferred embodiment.

4 12 shows an enlarged partial view of the moving blade 18 in the area of the teeth 24 of FIG 3 . It can be seen from this enlarged illustration that the width B is significantly smaller than a distance A between two adjacently arranged teeth 24 in each case. The downward arrow shows that the hairs to be cut reach the intermediate area between two adjacent teeth 24 .

Due to the significantly larger distance A compared to the width B of the tooth tip 26, it is possible to increase the feed rate, ie the proportion of hairs that penetrate into the cutting area. The protruding hairs are in 4 Schematically shown as dots above the arrow.

Again 4 As can be seen, the ratio between the width B of the tooth tips 26 of the teeth 24 of the moving blade 18 and the width B' of a tooth base 32 is approximately 1:2. However, this ratio can also be 1:3. The tooth can extend in a wedge shape in the direction of the tooth tip 26 .

In 2 1 is a moving blade 38, or razor, according to the prior art, from which it can be seen that the width C at the region of a tooth tip 40 is substantially greater than the width B at the tooth tip of the teeth of the moving blade according to 3 is. The width C, as in 2 shown, is usually about 0.28mm according to the prior art.

In figure 5 12 is a side view of a moving blade 18 as in FIG 3 represented, shown. In this figure the geometry of the moving blade 18 can be clearly seen, in the area of the teeth 24 it can be clearly seen that the tooth tip 26 is flattened.

Out of 6 12 which is an enlarged partial side view in the area of a tooth 24 of the moving blade 18 according to FIG figure 5 12, it can be seen that the tooth tip 26 has a flat edge 28. FIG. The tooth 24 has a cutting edge 34 which corresponds to the underlying fixed blade set, not shown here, and serves as a running surface which slides on the underlying tooth. The edge 28 at the tooth tip 26 presents a surface which can come into contact with the skin of the person to be treated. The tip of the tooth has a rounded end 36 .

In this embodiment, the edge 28 runs according to FIG 6 perpendicular to the cutting edge 34, the two edges meeting at a first end portion 30, and at an opposite end of the edge 28 a second end portion 30' is rounded.

According to this training 6 is in for better illustration 8 shown enlarged. The end portion 30 has a straight portion 43, designated F, which extends to the beginning of the rounding of the rounded end portion 30'. The height 47 of the cutting tooth is denoted by H. In the context of the present invention, the ratio of F to H is in a range from 0.6 to 0.95, preferably from 0.65 to 0.8. Particularly preferred values are 0.7, 0.75 and 0.8.

The 90° plus radius (or "round edge") design at the top of the moving blade 18 ensures that there is no knife edge that the reciprocating motion of the moving blade 18 can cut into the skin.

This tooth tip geometry is very advantageous, particularly when cutting perpendicularly to the skin surface, in order to avoid damage to the skin of the person to be treated, as is the case in Figures 9 and 9a is shown. In Figure 9a , which is an enlarged view of the blade set 14 according to the invention with the fixed blade 16 and of the moving blade 18, showing the cutting perpendicular to the skin surface and the orientation of the blade set 14. in the, in 9 shown exemplary embodiment of the hair clipper 10 according to the invention, the blade set 14 is attached to a cutting set carrier 42 and can be introduced and fastened in a receptacle provided for this purpose in the main body 12 of the hair clipper 10 . However, it is also possible for the blade set 14 to be detachably connected to the base body 12 of the hair clipper 10 by means of fastening means such as screws.

Not only when cutting perpendicular to the skin surface, but also parallel to the skin surface, the flat and wide tooth tip offers improved cutting performance, since the hair to be cut is caught by the wide edge of the teeth over a longer hair section and guided into the cutting area without over to be able to "slip" the front edge of the teeth out of the cutting area, as is the case with a pointed tooth tip 40 as is known from the prior art and in 7 shown happens. With such a pointed tooth tip as in 7 As shown, the hair to be cut bends over the bevel of the tip and is accelerated by the reciprocating movement of the blade, resulting in a forward force actively pushing the hair 44 overlying the bevel away from the cutting area like a slope driving force. The hair 44 is with the wavy line in the Figures 7 and 8 shown.

The area adjoining the cutting edge can be designed at 90° or in an angle range of 81° to 98° - as explained in more detail above - i.e. this effect is even achieved by an angle slightly smaller or slightly larger than 90° .

Reference List

10

hair clipper

12

body

14

blade set

16

fixed blade

18

moving blade

20

base section

22

tooth end

24

Tooth

26

tooth tip

28

flat edge

30

first end portion of edge 28

30'

second end portion of edge 28

32

tooth base

34

cutting edge

36

rounded end of the tooth tip

38

moving blade (according to prior art)

40

Tooth tip (according to the state of the art)

42

cutting set carrier

44

hair

47

cutting tooth height

Claims (17)

Blade set for a hair clipper (10), which has a base body (12) and a blade set (14) firmly connected thereto, the blade set (14) having a fixed blade (16) and a moving blade (18), the moving The blade (18) has a base section (20) with a toothed end (22) with a large number of teeth (24) formed parallel to one another, the teeth (24) being located in the longitudinal direction of the hair clipper (10) in a cutting area (28) of the set of blades (14) extend outwards with their tooth tips (26),
characterized in that the teeth (24) of the moving blade (18) are dimensioned in such a way that their width (B) in the region of the respective tooth tip (26) is significantly smaller than a distance (A) between two adjacently arranged teeth (24 ) is. A blade set according to claim 1, characterized in that the distance (A) between the adjacent teeth (24) is preferably about three times the width (B) of the tooth tips (26) of the teeth (24) of the moving blade (18). . Blade set according to one of claims 1 or 2, characterized in that the width (B) of the tooth tips (26) of the teeth (24) of the moving blade (18), substantially in a range of less than 0.24 mm, preferably in a range between 0.10mm and 0.24mm, and more preferably in the range of 0.18mm. Blade set according to one of the preceding claims, characterized in that each individual tooth (24) extends in a pointed manner in the direction of the tooth end (22) and in particular in the form of a truncated truncated pyramid. Blade set according to one of the preceding claims, characterized in that the tooth tips (26) extend essentially perpendicularly to the longitudinal axis of the hair clipping machine (10). A blade set according to any one of the preceding claims, characterized in that the tooth tips (26) of the teeth (24) of the moving blade (18) are formed substantially flat, and substantially in the width direction perpendicular to a surface that serves as a cutting edge (34) and extends downward in the longitudinal direction of the respective tooth (24) and corresponds to the fixed blade (16), an opposite end (36) of the respective tooth tip (26 ) is rounded. Blade set according to one of the preceding claims, characterized in that the tooth tips (26) have an edge (28) which is essentially linear, with their end sections (30, 30') running essentially perpendicularly to the edge (28) or are partially and/or completely rounded, and wherein an area adjoining a cutting edge (34), which corresponds to the fixed blade (16), is designed at an angle of 90°. Blade set according to one of Claims 1 to 7, characterized in that the tooth tips (26) have a rounded edge and/or a wavy edge. Blade set according to one of the preceding claims, characterized in that the end section (30) of the tooth tip (26) has a straight part (43) F which extends to the beginning of the rounding of the rounded end section 30' and the ratio of the lengths of the straight part F (43) to the height (47) H of the cutting tooth is in a range of 0.6 to 0.95, preferably 0.65 to 0.8. Blade set according to one of the preceding claims, characterized in that the ratio between the width (B) of the tooth tips (26) of the teeth (24) of the moving blade (18) and the width (B') of a tooth base (32) is approximately 1 :2. Blade for a blade set (14) for a hair clipper (10), the blade (18) being a moving blade (18) and having a base portion (20) and a toothed end (22), the blade (18) having a plurality of parallel teeth (24), which extend in the longitudinal direction of the hair clipper (10) in a cutting area (28) of the set of blades (14) with their tooth tips (26) outwards,
characterized in that the teeth (24) of the moving blade (18) are dimensioned such that their width (B) in the region of the respective tooth tip (26) is substantial is smaller than a distance (A) between two adjacently arranged teeth (24). Blade according to Claim 11, characterized in that the width (B) of the tooth tips (26) of the teeth (24) is substantially in the range of less than 0.24 mm, preferably in a range between 0.10 mm and 0.24 mm. Blade according to any one of the preceding claims, characterized in that the end portion (30) of the tooth tip (26) has a straight portion (43) F which extends to the beginning of the rounding of the rounded end portion 30' and wherein the ratio of the lengths of the straight part F (43) to the height (47) H of the cutting tooth is in a range of 0.6 to 0.95, preferably 0.65 to 0.8. Blade according to one of the preceding claims 11 to 13, characterized in that the tooth tips (26) of the teeth (24) are formed substantially flat, and in the width direction substantially perpendicular to a surface serving as a cutting edge (34) and itself extends downward in the longitudinal direction of the respective tooth (24), with an opposite end (36) of the respective tooth tip (26) being rounded. Blade according to one of Claims 11 to 14, characterized in that the tooth tips (26) have an edge (28) which is essentially linear, with their end sections (30, 30') being essentially perpendicular to the edge (28). run or are partially and/or completely rounded, and wherein an area adjoining the cutting edge (34), which corresponds to a firmly connected blade (16), can be executed at an angle of about 90°. Blade according to one of Claims 11 to 15, characterized in that the tooth tips (26) have a rounded edge (28) and/or a wavy edge (28). A hair clipper (10) having a housing body (12) and a set of blades (14) connected thereto according to any one of claims 1 to 10.

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