Hair clipper blade set with transport element

Abstract

A hair clipper with a blade set, includes at least one stationary or one adjustable cutting comb and one shearing blade driven in oscillation in the transverse direction essentially parallel to the front edge of the cutting comb. The hair clipper may have a hair transport element, which has a transport toothing, which is arranged essentially along the cutting edge of the shearing blade at a distance from the cutting edge of the shearing blade. The shearing blade is arranged between the cutting comb and the hair transport element. The cutting edge of the shearing blade extends beyond the front edge of the hair transport element.

Claims

1. A blade set of a hair clipper, comprising: a stationary cutting comb; a shearing blade driven in oscillation in a transverse direction essentially parallel to a front edge of the cutting comb; and a hair transport element arranged to transport hair, the hair transport element having a transport toothing with teeth that are arranged adjacent to one another and are arranged essentially along a cutting edge of the shearing blade at a distance from the cutting edge of the shearing blade, wherein the shearing blade is arranged between the cutting comb and the hair transport element and wherein the cutting edge of the shearing blade extends beyond a front edge of the hair transport element, and wherein the hair transport element has a substantially plate-like form aligned in a co-planar fashion with the shearing blade.

2. A blade set according to claim 1, wherein the transport toothing has an essentially sawtooth profile and wherein sawteeth of the sawtooth profile each have a steep flank and a flat flank.

3. A blade set according to claim 1, wherein the transport toothing of the hair transport element is arranged on the hair transport element running essentially along an entire portion of the cutting edge of the shearing blade.

4. A blade set according to claim 1, wherein the front edge of the hair transport element is essentially parallel to the cutting edge of the shearing blade.

5. A blade set according to claim 1, wherein tips of the teeth of the transport toothing are arranged relative to each other so that the tips define a first section of an envelope curve which forms a convex boundary of the transport toothing.

6. A blade set according to claim 1, wherein the hair transport element is firmly joined to the shearing blade, over a surface thereof.

7. A blade set according to claim 1, wherein the hair transport element is driven in oscillation via a driver with the shearing blade.

8. A blade set according to claim 1, wherein the transport toothing has a first section and a second section, and steep flanks of sawteeth of the first section of the transport toothing and steep flanks of the sawteeth of the second section of the transport toothing point in essentially opposite directions to each other.

9. A blade set according claim 8, wherein the first section of the transport toothing is arranged in mirror symmetry to the second section of the transport toothing.

10. A blade set according to claim 1, wherein the transport toothing has a middle tooth at a center with two steep flanks.

11. A blade set according to claim 1, wherein a distance between the front edge of the cutting comb and the cutting edge of the shearing blade is adjustable while a relative position of the cutting edge of the shearing blade to the front edge of the hair transport element remains constant when a distance between the front edge of the cutting comb and the cutting edge of the shearing blade is changed.

12. A blade set according to claim 11, wherein the distance between a front edge of the cutting comb and the cutting edge of the shearing blade is adjustable with an activating element.

13. A hair clipper, comprising: a stationary cutting comb; a shearing blade driven in oscillation in the transverse direction essentially parallel to the front edge of the cutting comb; a hair transport element arranged to transport hair, the hair transport element having a transport toothing with teeth which are arranged adjacent to one another and are arranged essentially along a cutting edge of the shearing blade at a distance from the cutting edge of the shearing blade, wherein the shearing blade is arranged between the cutting comb and the hair transport element, wherein the cutting edge of the shearing blade extends beyond a front edge of the hair transport element, and wherein the hair transport element has a substantially plate-like form aligned in a co-planar fashion with the shearing blade; a housing, which encloses an electric motor for driving the shearing blade in oscillation; and a driver, coupled to the electric motor and the shearing blade to drive the shearing blade in oscillation in response to the electric motor being turned on, wherein the hair transport element is one of: coupled firmly to the shearing blade or coupled to the shearing blade in such a way that the hair transport element moves along with the shearing blade when the shearing blade is driven in oscillation.

14. A hair clipper according to claim 13, further comprising: a hair transport element having an engagement to receive the driver.

15. The blade set according to claim 1, wherein the transport element is arranged to transport hair in the transverse direction.

16. The blade set according to claim 1, wherein the transport element is arranged to eject hair away from the hair clipper.

17. The blade set according to claim 1, wherein the teeth of the transport toothing are arranged along an entire length of the cutting edge of the shearing blade.

18. The blade set according to claim 1, wherein the transport toothing includes at least 5 teeth.

19. The blade set according to claim 2, wherein, for each of the sawteeth, each end of each flat flank terminates at an end of a steep flank.

20. A blade set of a hair clipper, comprising: a stationary cutting comb; a shearing blade driven in oscillation in a first direction essentially parallel to a front edge of the cutting comb; and a hair transport element arranged to transport hair, the hair transport element having a transport toothing with teeth arranged essentially along the cutting edge of the shearing blade, wherein the hair transport element has a substantially plate-like form aligned in a co-planar fashion with the shearing blade, and wherein the shearing blade is arranged between the cutting comb and the hair transport element.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Embodiments of the system described herein will now be explained in more detail in accordance with the figures of the drawings, which are briefly described as follows.

(2) FIG. 1 shows a hair clipper, according to an embodiment of the system described herein.

(3) FIG. 2 shows a blade set of a hair clipper with a hair transport element according to an embodiment of the system described herein.

(4) FIG. 3 shows an example of a hair transport element according to an embodiment of the system described herein.

(5) FIGS. 4a-4d show further examples of a hair transport elements according to embodiments of the system described herein.

(6) FIG. 5 is a schematic representation of a hair transport element according to an embodiment of the system described herein.

(7) FIG. 6 shows an envelope curve of a possible transport toothing relative to a cutting edge of a shearing blade according to an embodiment of the system described herein.

DETAILED DESCRIPTION OF VARIOUS EMBODIMENTS

(8) FIG. 1 shows a hair clipper 1 with a blade set 2, as well as a housing 4 in which an electric motor (not shown in FIG. 1) is arranged. The electric motor may be turned on and off with an electric switch 6.

(9) FIG. 2 shows part of the blade set 2 of FIG. 1 with a shearing blade 8 and a hair transport element 10, which has a transport toothing 12, being fashioned in the present case as a single piece with the hair transport element 10. The hair transport element 10 is firmly connected to the shearing blade 8 and moves back and forth with the shearing blade 8, so that the transport toothing 12 ejects cut hairs 14 to the right and left and thus automatically moves the hair pieces 14 away from the blade set 2 and both clears up the view of the hairs still being clipped and facilitates the feeding of new pieces of hair.

(10) The hair transport element 10 has a base line 16, on which the transport toothing 12 is placed, or on which the individual teeth of the transport toothing 12 are arranged. Parallel to the cutting edge 18 of the shearing blade 8, which is likewise represented as a broken line in FIG. 2, is arranged the front edge 20 of the hair transport element 12, represented as broken line 20. The front edge 20 of the hair transport element 12 defines, together with the base line 16 of the transport toothing 12 and the two side boundaries of the transport toothing 12, an envelope curve 21, which encloses the transport toothing 12 in a convex manner. The blade set 2 shown in FIG. 2 furthermore has a cutting comb 24, whose front edge 22 is likewise indicated as a broken line.

(11) FIG. 3 shows an example of a hair transport elements 10 further enlarged. The transport toothing 12 has a middle tooth 26, two openings 28 which serve to fasten the hair transport element 10 on the shearing blade 8, as well as an engagement 30 for a driver (not shown). The hairs 14, which are cut off to the right of the middle tooth 26 of the hair transport element 10, are transported by the back and forth motion of the hair transport element 10, which is correlated with the back and forth motion of the shearing blade 8 relative to the cutting comb 24, to the right of the sawteeth 32 which are arranged at the right of the middle tooth 26 and ejected in the direction of the right side of the hair transport element 10. The hairs 14, which are cut off to the left of the middle tooth 26 by the shearing blade 8, are transported to the left by the sawteeth 32 which are arranged at the left of the middle tooth 26 on the hair transport element 10 and ejected in the direction of the left side of the hair transport element 10.

(12) FIG. 4 shows four further examples of hair transport elements 10.

(13) As is especially to be seen in FIG. 4a, the transport toothing 12 of the hair transport element 10 has, besides a middle tooth 26, sawteeth 32 which each have a steep flank 34 and a flat flank 36. The steep flanks 34 of the sawteeth 32 which are arranged to the left of the middle tooth 26 point to the left, while the steep flanks 34 of the sawteeth 32 which are arranged to the right of the middle tooth 26 point to the right. Thanks to the fact that the steep flanks 34 on both sides of the transport toothing 12 each point outward, i.e., in essentially opposite directions, it can be assured that cut hairs 14 which are clipped off at the left side of the hair clipper 1 are ejected to the left by the back and forth motion of the hair transport element 10, while hairs 14 which are clipped off at the right side of the hair clipper 1 are ejected to the right.

(14) FIG. 4b shows a hair transport element 10, similar to FIG. 4a, with a middle tooth 26 and sawteeth 32 having steep flanks 34 and flat flanks 36, but fewer and therefore larger sawteeth 32. However, it is also possible to provide hair transport elements 10 which eject the cut hairs 14 in only one direction.

(15) FIG. 4c shows a hair transport element 10 without middle tooth 26, in which the hairs are ejected to the left. FIG. 4d shows a corresponding hair transport element 10 in which the hairs are ejected to the right. The transport toothing 12 runs in both cases obliquely to the base line 16, namely, from left to right and upward from the base line 16 when the hairs are ejected to the left, as is shown in FIG. 4c, and from left to right and downward to the base line 16 when, as in FIG. 4d, the hairs are ejected to the right.

(16) An oblique profile of the transport toothing 12 relative to the base line 16 corresponds to an oblique profile of the transport toothing 12 relative to the cutting edge 18 of the hair clipper. This has the advantage that the hair ejected to the left or right are not repeatedly accelerated at the teeth 32 of the transport toothing 12 in the ejection direction, thus ensuring a hair ejection distributed over a broader cross sectional area. For a hair transport to the left, the teeth 32 arranged on the right of the transport toothing 12 are closer to the cutting edge 18 of the hair clipper than the teeth 36 arranged on the left of the transport toothing 12, as is shown in FIG. 4c.

(17) In the case of a transport of the cut hairs 14 to the right, the teeth 32 arranged on the left of the transport toothing 12 are closer to the cutting edge 18 of the hair clipper than the teeth 36 arranged on the right of the transport toothing 12, as can be seen in FIG. 4d.

(18) FIG. 5 shows a hair transport element 10 in schematic representation with another configuration of the transport toothing 12. The sawteeth 32 are arranged in mirror symmetry to a central axis 37, also known as the mirror axis 37 and running through the middle tooth 26. The sawteeth 32 arranged at the left of the middle tooth 26 in a first section 38 are oriented with their flat flanks 36 in the direction of the central axis 37 of the hair clipper 1 and point to the left with their steep flanks 34, away from the central axis 37. The sawteeth 32 arranged to the right of the middle tooth 26 in a second section 40 are oriented with their flat flanks 36 in the direction of the central axis 37 of the hair clipper 1 and point to the right with their steep flanks 34, away from the central axis 37. The broken-line envelope curve 21 borders and encloses the transport toothing 12. The envelope curve 21 encloses the teeth 26, 32 of the transport toothing 12 in convex manner. The cutting edge 18 of the shearing blade 8 represented by a broken line in FIG. 5 runs at a distance from the front edge 20 of the hair transport element 10 and thus from the first segment of the envelope curve 21.

(19) FIG. 6 shows a concave-convex shaped envelope curve 21, which encloses the teeth 26, 32 of the transport toothing 12. The first segment of the envelope curve 21 runs adjacent to the cutting edge 18 and borders the transport toothing 12 in convex manner, so that the tips of the teeth 32, 26 arranged more in the middle of the transport toothing 12 have a shorter distance from the cutting edge 18 than the teeth 26 arranged closer to the two edges of the transport toothing 12. This has the benefit that hair pieces 14 which have already been moved in a direction outward to the side by a steep flank 34 of a tooth 26, 32 do not experience another change of direction by a flat flank of a tooth 32. In this way, similar to the example in FIG. 5, in which the envelope curve 21 encloses the entire transport toothing 12 in convex manner, hair pieces 14 are quickly and effectively removed from the hair clipper 1. The base line 16 of the transport toothing 12, i.e., the second segment of the envelope curve 21, borders the transport toothing 12 in concave manner in this example.

(20) The invention has been explained with the aid of preferred example embodiments, without being limited to these examples. Individual features of the example embodiments represented in each case can also be combined with each other or exchanged with other features of the same effect, as long as they are compatible. Thus, for example, the teeth of the transport toothing can be fashioned so that the tangential angles of the flat flanks decrease from the base line in the direction of the tips of the individual tooth until they have an angle with the base line of practically zero, for example. Tooth profiles of this shape should also be called sawtooth-shaped.