Haircutter for trimming and styling hair of the head

Abstract

A haircutter (1) comprises a blade head (2), a grip, (10) and a haircutting blade (4) comprising a cutting edge (14) accommodated in the blade head (2). The blade head (2) comprises two blade head sections (201, 202) removably coupled to one another by means of a blocking device (200). The blocking device (200) comprises a locking mechanism (203) operable by an operating member (204). The operating member (204) is provided by at least part of the grip (10). Actuating the operating member (204) causes the locking mechanism (203) to shift from an operating position to an off position, to allow releasing the coupled blade head sections (201, 202) from one another.

Claims

1. A haircutter for trimming and styling hair of the head, comprising: a blade head and a grip laterally disposed on the blade head, wherein a longitudinal face of the blade head comprises a working section disposed thereat which is recessed from an alignment line of the longitudinal face, and wherein a haircutting blade comprising a cutting edge is accommodated and disposed in the blade head, so that the cutting edge is at least partially exposed in the working section and not protruding beyond the alignment line, wherein the blade head comprises a first blade head section and a second blade head section removably coupled to one another by means of at least one blocking device, wherein the blocking device comprises at least one locking mechanism operated by an operating member, and wherein the operating member comprises at least part of the grip, and wherein actuating the operating member causes the locking mechanism to shift at least from an operating position to a release position, to allow releasing the coupled first and second blade head sections from one another, and wherein the locking mechanism comprises a safety member, which is locked by means of the operating member to the second blade head section so as to assume the operating position, and which, in the operating position, extends at least partially at least from the first blade head section to the second blade head section, the first blade head section comprises a first blade head section through hole through which the safety member extends, so that an end of the safety member is connected with the grip, and another end of the safety member extends into a second blade head section through hole in the second blade head section.

2. The haircutter according to claim 1, wherein actuating the operating member causes the locking mechanism to shift from the release position to the operating position, to couple the blade head sections to one another.

3. The haircutter according to claim 1, wherein the locking mechanism is operated by means of a rotary motion of the operating member.

4. The haircutter according to claim 1, wherein the operating member is provided by an elongated part section of the grip.

5. The haircutter according to claim 4 wherein the operating member is provided by the grip itself.

6. The haircutter according to claim 1, wherein the locking mechanism is configured to secure the second blade head section in a force fit to the first blade head section.

7. The haircutter according to claim 1, wherein the locking mechanism is configured to secure the second blade head section in a form fit to the first blade head section.

8. The haircutter according to claim 1 wherein the locking mechanism is configured to move the second blade head section to the operating position in a linear movement with respect to the first blade head section.

9. The haircutter according to claim 1 wherein the locking mechanism is configured to move the second blade head section to the operating position parallel to the plane of the first blade head section.

10. The haircutter according to claim 1 wherein operational attachment of the grip to the first blade head section causes the locking mechanism to simultaneously fix the second blade head section to the first blade head section.

11. The haircutter according to claim 1 wherein for releasing the second blade head section from the first blade head section, the safety member is released from the second blade head section by means of the operating member.

12. The haircutter according to claim 1, wherein the safety member comprises a threaded portion, which is screwed at least into the second blade head section by means of the operating member.

13. The haircutter according to claim 1, wherein the safety member is non-rotatably connected with the operating member.

14. The haircutter according to claim 1, wherein the safety member is non-rotatably connected with the grip.

15. The haircutter according to claim 1, wherein the grip is removably attached to the first blade head section by means of the safety member.

16. The haircutter according to claim 1, wherein the grip is removably attached to the second blade head section by means of the safety member.

17. The haircutter according to claim 1, wherein the first blade head section through hole is configured unthreaded and/or showing oversize in relation to the other end of the safety member, so that the other end of the safety member is passed through the first blade head section through hole without any screwing motion.

18. The haircutter according to claim 1, wherein the safety member comprises a threaded portion at least in sections.

19. The haircutter according to claim 12, wherein at least sections of the threaded portion of the safety member are coaxially disposed in the grip.

20. The haircutter according to claim 1, wherein the locking mechanism clamps the second blade head section relative to the first blade head section.

21. The haircutter according to claim 1, wherein the blocking device comprises at least one biasing device, which is configured to urge the second blade head section away from the first blade head section by means of spring force.

22. The haircutter according to claim 1, wherein the blocking device comprises a form grip device including a form grip member in the first blade head section, and a form grip member in the second blade head section, and wherein the form grip members of the first and the second blade head members are clamped to one another by transferring the locking mechanism to the operating position, so that the first and second blade head sections are locked to one another in a form fit.

23. The haircutter according to claim 22, comprising an adjusting device for aligning the haircutting blade in the blade head, wherein the adjusting device comprises an adjusting unit in at least partial engagement in a recess in the haircutting blade, and wherein the adjusting unit is provided by one of the form grip members.

Description

(1) 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.

(2) The figures show in:

(3) FIG. 1 a purely schematic illustration of a haircutter according to the invention in a perspective view;

(4) FIG. 2 a purely schematic detail illustration of a blade head of the haircutter in a perspective view;

(5) FIG. 3 a schematic detail illustration of a first blade head section of the haircutter in a perspective view;

(6) FIG. 4 a schematic detail illustration of a second blade head section of the haircutter in a perspective view;

(7) FIG. 4A a schematic detail illustration of the blade head and grip of the haircutter in a partial sectional view;

(8) FIG. 5 the blade head section of FIG. 4 with a haircutting blade inserted;

(9) FIG. 6 a purely schematic detail illustration of a first blade head section of a specific embodiment of the haircutter in a perspective view;

(10) FIG. 7 a purely schematic illustration of a configuration of the haircutter in a side view; and

(11) FIG. 8 a purely schematic illustration of another configuration of the haircutter in a side view.

(12) FIG. 1 shows a haircutter 1 according to the invention comprising a blade head 2 and a haircutting blade 4 accommodated therein. A grip 10 is attached to the side of the blade head 2 so that the longitudinal axes of the grip 10 and the blade head 2 are oriented in the same direction.

(13) The 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. The 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.

(14) The blade head 2 comprises two blade head sections 201, 202 between which the haircutting blade 4 is accommodated. The first blade head section 201 is connected with the grip 10 by means of a grip accommodation 11. The second blade head section 202 is attached to the first blade head section 201 for which it serves as a cover. The two blade head sections 201, 202 rest flush against one another on the longitudinal faces 12.

(15) Each of the blade head sections 201, 202 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.

(16) 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.

(17) The two placing surfaces 15 disposed on one shared side face 22, 32 are separated from one another by the elevation 52.

(18) The guiding device 5 is configured integrally with the blade head 2. This provides the placing surfaces 15 in a wedge-shaped design of the blade head 2 or its blade head sections 201, 202.

(19) The grip 10 and the blade head 2 show one shared balancing point 20 disposed in the grip 10. The grip 10 is e.g. provided with a hollow space which can accommodate a counterweight 9, not shown. 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.

(20) The longitudinal axis of the blade head 2 extends in parallel to the longitudinal faces 12 respectively to the alignment line 120 and centrally through the grip 10, and through the central main plane of the blade head 2 and also of the haircutting blade 4. The side faces extend transverse to the longitudinal axis. The grip accommodation 11 is disposed on one of the side faces 123, so that the grip 10 can be accommodated on the side of the blade head 2.

(21) To insert or change the haircutting blade 4, or to reverse it so that an unused cutting edge 14 lies in the working section 3, the second blade head section 202 can be taken off the first blade head section 201. The haircutter 1 is equipped with a blocking device 200 for particularly safe and comfortable blade changes. The blocking device 200 comprises a locking mechanism 203, not visibly disposed in the interior, which, by means of an operating member 204, can be shifted from an operating position to a off position and reversely.

(22) In the operating position, the blade head sections 201, 202 are firmly coupled to one another, as shown. In the off position, the blade head sections 201, 202 are decoupled from one another, so that the second blade head section 202 can be removed from the first blade head section 201, and the haircutting blade 4 is comfortably and safely accessible. Here the operating member 204 is provided by the grip 10. Rotating the grip 10 shifts the locking mechanism 103 from the off position to the operating position and reversely.

(23) FIG. 2 illustrates the blade head 2 in more detail. For the sake of clarity, the grip 10 is not shown.

(24) FIG. 3 shows the inner side of the first blade head section 201 opposite the side face 22. On this side the adjusting device 6 for aligning the haircutting blade 4 and parts of the blocking device 200 can be particularly clearly recognized.

(25) The adjusting device 6 comprises three adjusting units 26 disposed in the first blade head section 201. The adjusting units 26 engage in a recess 16 of the haircutting blade 4, as shown in detail in the FIG. 5. Thus, movement of the haircutting blade 4 in its longitudinal direction and also transverse to its longitudinal direction is blocked by way of form-fit.

(26) The adjusting device 6 moreover comprises a take-up cavity 36 recessed in the blade head section 201 matched to the outer contour of the haircutting blade 4. The depth of the take-up cavity 36 corresponds at least approximately to the thickness of the haircutting blade 4. This is another way of blocking undesired movement of the haircutting blade 4.1

(27) The adjusting device 6 is disposed at an angle or inclination to the longitudinal axis 42 of the blade head 2. Thus, the inserted haircutting blade 4 is aligned by its cutting edges 14 at a defined angle to the longitudinal axis respectively to the longitudinal faces 12 of the blade head 2. The angle of the inclined position is for example 3.

(28) FIG. 4 shows the inner side of the second blade head section 202 opposite the side face 32. Here, the parts of the adjusting device 6 and of the blocking device 200 corresponding to the first blade head section 201 can be particularly clearly recognized.

(29) FIG. 5 shows the blade head section 202 described with reference to the FIG. 4, with a haircutting blade 4 inserted as intended.

(30) The blocking device 200 will now be described with reference to the FIGS. 1 to 5. The locking mechanism 203 comprises a safety member 213 with a threaded portion 223 and two coupling portions 233, 243. The first coupling portion 233 is disposed on the first blade head section 201 and the second coupling portion 243, on the second blade head section 202.

(31) The first coupling portion 233 shows a through hole 211 with a threaded region 221 configured as an internal thread. The second coupling portion 243 likewise shows a through hole 212 with a threaded region 222 configured as an internal thread. The threaded regions 221, 222 are configured corresponding to the threaded portion 123 of the safety member 113. Thus, the safety member 213 can be screwed from the outside into the first blade head section 201 and then further into the second blade head section 202. Thus results a screwed connection securing the second blade head section 202 to the first blade head section 201 in a force-fit and also form-fit.

(32) In the FIGS. 2 and 3 the safety member 213 is partially threaded into the first blade head section 201. The FIGS. 4 and 5 show the safety member 213 in a position in which it has not yet entered the second blade head section 202.

(33) The operating member 104 provided here for the locking mechanism 203 is the grip 10. To this end, the grip 10 is non-rotatably connected with the safety member 113. Here the safety member 213 is incorporated centered respectively coaxially in the grip 10. The locking mechanism 103 is operated by rotating the grip 10. A rotary motion of the grip in one direction threads the safety member 213 into the blade head sections 201, 202, and a rotary motion in the opposite direction, unthreads it.

(34) To access the haircutting blade 4 while the haircutter 1 is in the operating position, the grip 10 needs only be rotated out of the blade head 2, for example anti-clockwise. As soon as the safety member 213 is unscrewed from the coupling portion 243 of the second blade head section 202, the second blade head section 202 can be removed, and the blade is safely accessible.

(35) Rotating the grip 10 further in the same direction causes the safety member 213 to rotate further and finally entirely out of the first blade head section 201. In this way, the grip 10 with the safety member 213 can be released from the blade head 2 together.

(36) For attaching the grip 10 to the blade head 2, the grip is rotated in the other direction, and the safety member 213 is screwed back into the first blade head section 201. In a first length of thread engagement the safety member 213 does not yet extend out of the coupling portion 233, so that the second blade head section 202 can be placed onto the first blade head section 201.

(37) As the grip 10 is rotated further, the length of thread engagement increases and the safety member 213 extends into the coupling portion 243 of the second blade head section 202. By correspondingly rotating the grip 10, the screwed connection is tightened and the second blade head section 202 is tensioned against the first blade head section 201.

(38) The blocking device 200 comprises a form-grip device 206 including a form-grip member 216 in the first blade head section 201, and a corresponding form-grip member 226 in the second blade head section 202. The form-grip device 206 causes the blade head sections 201, 202, in the operating position, to be secured in a form-fit, in addition to the screwed connection of the safety member 213. At the same time, the haircutting blade 4 is also tightly clamped.

(39) Shifting the locking mechanism 203 to the operating position causes the second blade head section 202 to be pulled toward the first blade head section 201, as described above. Then the form-grip members 216, 226 are also pulled toward one another so that they are wedged. This achieves a particularly tight seat of the blade head sections 201, 202 without play. At the same time the haircutting blade 4 is clamped particularly firm or tight, so as to achieve a particularly good cutting performance. The form-grip members 216, 226 are configured integrally with the pertaining blade head section 101, 202.

(40) To lift the form fit, the second blade head section 202 must be removed from the first blade head section 201 in the longitudinal direction and in a direction facing away from the grip 10. Opposite this direction of release and also transverse to this direction of release, the form fit is achieved by the form-grip members 216, 226. The form-grip members 216, 206 and 20 are configured in a wedge shape, so that one of the form-grip members 216 can reach beneath the other of the form-grip members 226 and reversely.

(41) The form-grip members 216, 226 each also establish an adjusting unit 26 of the adjusting device 6. To this end, the form-grip members 216, 226 are configured and disposed so that in the operating position, they extend through the recess 16 in the haircutting blade 4.

(42) The form-grip members 216, 226 or the adjusting unit 26 are configured integrally with the pertaining blade head section 201, 202. Preferred is also a configuration in which the form-grip members 216, 226 or the adjusting unit 26 are configured separate from the pertaining blade head section 201, 202, and connected with the pertaining blade head section 201, 202 releasably or permanently. A screwed connection is for example provided.

(43) FIG. 6 shows the first blade head section 201 of the haircutter 1, substantially corresponding to the blade head section 201 shown in FIG. 3. Additionally, a pre-tensioning device 205 with a spring 215 of spring steel is provided. The spring 215 is pre-tensioned by shifting the locking mechanism 203 to the operating position. Then when the locking mechanism 203 is released and shifted to the off position, the spring 215 urges the second blade head section 202 away from the first blade head section 201. This provides the user with a haptic signal that the off position has been reached, and the second blade head section 202 can now readily be removed from the first blade head section 201.

(44) FIG. 1 shows in the area in dashed lines, a top view of the haircutting blade 4. The haircutting blade 4 is provided with two opposite cutting edges 14. This haircutting blade 4 is rectangular with rounded corners.

(45) In the side face of the haircutting blade 4 the recess 16 is formed which is configured as a rectangular, elongated hole. The elongated hole shows rectangular or non-rounded corners. The length 46 of the recess 16 corresponds to the distance of the two outer adjusting units 26 of the adjusting device 6 of the blade head 2. The width 56 of the recess 16 corresponds to the width of each of the adjusting units 26.

(46) 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 56 of the recess 16 is for example 5 mm and the length 46 is 37.2 mm.

(47) These dimensions of the haircutting blade 4 are particularly suitable for the haircutter 1 described above, since they provide particularly advantageous angles for the placing surfaces 15 without making the blade head 2 bulky.

(48) FIGS. 7 and 8 show the haircutter 1 with a grip 10, which is configured in segments in respect of its longitudinal axis. The grip 10 according to FIG. 7 comprises three axial segments 301-303. The grip 10 according to FIG. 8 comprises four axial segments 301-304. The segments 301-304 of a grip 10 consist of different materials, e.g. stainless steel, wood, and/or plastic, and/or they differ in their surface properties, e.g. by their colors. In particular at least one of the segments 301-304 is non-rotatably connected with the safety member 213 and preferably with the threaded portion 223.

(49) The grips 10 shown are in particular parts of a system comprising a plurality of segments 301-304 provided for exchanging with one another. For example, a second segment 302 of stainless steel can be replaced by another second segment 302 of the system, e.g. of wood or plastic. Exchanging the segments 301-304 also allows varying the number of segments 301-304. For example, the third segment 303 of the grip 10 according to FIG. 7 may be replaced by two shorter segments 303, 304, as shown in FIG. 8. The total length of the grip 10 remains unchanged.

(50) For example, in the FIG. 7 the length of the first segment 301 is 39 mm, the length of the second segment 302 is 107.2 mm, and the length of the third segment 303 is 29 mm. For example in the FIG. 8, the first and second segments 301, 302 show the same length. The third segment 303 for example shows a length of 23.5 mm. The fourth segment 304 for example shows a length of 5.5 mm.

(51) A particular advantage of the blocking device presented is that in the operating position the blade head sections 201, 202 are pulled particularly close to one another. This allows to comply with a desired gap width and to effectively avoid uneven distances or a play of the blade head sections 201, 202. FIG. 2 shows a separation line 207 between the blade head sections 201, 202 where a particularly narrow distance between components is provided. The tightening of the second blade head section 202 against the first blade head section 201 nearly eliminates any gap in the separation line 207. The separation line 207 shows a convex contour of the second blade head section 202, and a concave contour, of the first blade head section 201. This also achieves a particularly narrow gap width.

LIST OF REFERENCE NUMERAL

(52) 1 haircutter 2 blade head 3 working section 4 haircutting blade 5 guiding device 6 adjusting device 9 counterweight 10 grip 11 grip accommodation 12 longitudinal face 14 cutting edge 15 placing surface 16 recess 20 balancing point 22 side face 24 width 26 adjusting unit 32 side face 34 length 36 take-up cavity 46 length 52 elevation 56 width 120 alignment line 200 blocking device 201 blade head section 202 blade head section 203 locking mechanism 204 operating member 205 pre-tensioning device 206 form-grip device 207 separation line 211 through hole 212 through hole 213 safety member 215 spring 216 form-grip member 221 threaded region 222 threaded region 223 threaded portion 226 form-grip member 233 coupling portion 243 coupling portion 301 segment 302 segment 303 segment 304 segment