HAIR CUTTING DEVICE AND CUTTING SET FOR A HAIR CUTTING DEVICE

Description

Gebiet der Erfindung

[0001] The invention relates to a hair cutting device and a cutting set for a hair cutting device. Stand der Technik

[0002] Hair cutting devices are known from the prior art and include, among other things, a blade arrangement which is provided at a front end of the hair cutting device and is suitable for cutting hair.

[0003] The blade assembly generally comprises two cutting elements, the first of which is fixed to the rest of the hair clipper, while the second is movable relative to the first. Often, cutting elements with comb-like edges are used, with the first element acting as a so-called shearing comb and coming into contact with the skin of the person or animal being treated, or the user. The second cutting element is then designed as a so-called shearing blade. Each cutting element has a series of spaced-apart teeth, which are usually arranged at regular intervals. Such a blade assembly can be designed to allow for different cutting lengths to be adjusted.The cutting length of such an adjustable blade arrangement is adjusted by longitudinally offsetting the two cutting elements relative to each other, whereby the movable cutting element is usually offset longitudinally.

[0004] Solutions for adjusting the cutting length are known from the prior art, allowing for either stepless or incremental adjustment. Both variants occur with roughly equal frequency, although one or the other is usually preferred depending on the user. This leads to a situation, particularly in hair salons with multiple hairdressers, where both stepless and incrementally adjustable hair cutting devices are present, although most of these variants are not in use. As a result, these salons experience low machine efficiency, which in turn reduces overall profitability.

[0005] DE 198 50 919 A1 discloses a shearing machine comprising a device for adjusting the cutting length, which acts on a shearing unit. The shearing unit has at least one zigzag comb and a shearing blade that is driven to oscillate transversely, substantially parallel to the leading edge of the zigzag comb. The cutting length adjustment device includes at least one coupling element that allows a relative longitudinal displacement between the zigzag comb and the shearing blade. The clamping device is releasably fixed by means of a locking mechanism.

[0006] DE 15 53 760 A1 discloses a hair clipper in which the lower cutting comb is adjustable relative to the upper cutting comb in the direction of the comb teeth by means of an adjusting lever operable laterally on the machine, wherein this lever is designed as an angled lever pivotable about a fixed axis and wherein a longer leg, extending laterally from the housing and serving as an actuating lever, is pivotably mounted on the part of the housing forming the hair handle of the machine, wherein a shorter leg of the adjusting lever, pivoting within the housing in the direction of the adjustment movement of the lower cutting comb, is connected to a slider carrying the movable lower cutting comb for actuating it, and wherein the adjusting lever has a locking device.with this, wherein the axis of the adjusting lever runs at an angle to the adjustment direction of the cutting comb and the actuating lever is pivotable approximately within the longitudinal center plane of the housing, wherein the leg of the adjusting lever has a toothed extension for the locking device, the latter being located approximately on the narrow side of the housing opposite the actuating lever and being able to be engaged and disengaged from there, wherein a return spring acts on the adjusting lever in a manner known per se.

[0007] US Patent 3,531,862 A discloses a hair clipper with a housing, a cutting element mounted on the housing for reciprocating motion, and a ratchet device for selectively positioning the element along its path of movement. The ratchet device includes a set of teeth defining a plurality of operating positions for the element. The ratchet device further provides a projecting section at each end of the set and comprises a pawl and a spring device. The pawl is movable between a first position in which it engages the teeth and a second position in which it is disengaged from the teeth. The spring means act compliantly to hold the pawl in either the first or the second position.

[0008] Solutions known from the state of the art are therefore not very economical, inflexible and often do not offer the optimal adjustment options. Darstellung der Erfindung

[0009] The object of the present invention is therefore to overcome the problems known from the prior art, i.e. to provide a cost-effective, flexible and easily adjustable solution.

[0010] The problem is solved by a hair cutting device according to claim 1 and a cutting set for a hair cutting device according to claim 2. Further features that further develop the invention are contained in the dependent claims.A hair cutting device according to the invention comprises a blade arrangement with a first cutting element and a second, movable cutting element, a drive device that drives the blade arrangement, and a cutting length adjustment device that interacts with the second cutting element in such a way that a longitudinal offset can be adjusted between the first cutting element and the second cutting element, wherein the hair cutting device further comprises a selection device with which the cutting length adjustment device can be adjusted between at least a first length adjustment mode and at least a second length adjustment mode, wherein in the first length adjustment mode the longitudinal offset can be adjusted stepwise or continuously, i.e. steplessly, and in the second length adjustment mode the longitudinal offset can be adjusted stepwise.Furthermore, a cutting set according to the invention for a hair cutting device comprises a blade arrangement with a first cutting element and a second, movable cutting element and a cutting length adjustment device which interacts with the second cutting element in such a way that a longitudinal offset can be adjusted between the first cutting element and the second cutting element, wherein the cutting set further comprises a selection device with which the cutting length adjustment device can be adjusted between at least a first length adjustment mode and at least a second length adjustment mode, wherein in the first length adjustment mode the longitudinal offset can be adjusted stepwise or continuously, i.e. steplessly, and in the second length adjustment mode the longitudinal offset can be adjusted stepwise.Such a selector device has the advantage that at least two different setting modes (continuous and stepped) can be provided with a hair clipper, thus enabling an extremely versatile hair clipper or cutting set for a hair clipper. Furthermore, a cutting set with this selector device can also be retrofitted to a hair clipper. The cutting elements are preferably comb-like, i.e., they have corresponding teeth, with the first cutting element being designed in particular as a fixed shearing comb that comes into contact with the skin of the person or animal being treated, or of the user. The second cutting element can also be designed as a movable shearing blade.The cutting elements are adjusted between a maximum longitudinal offset (maximum cutting length) and a minimum longitudinal offset (minimum cutting length), which, for example, results in a minimum or maximum overlap of the cutting elements in the case of comb-like cutting elements. Preferably, the blade assembly also includes a clamping element (e.g., a coupling spring) for pre-tensioning the cutting elements against each other, and a support device that serves as a housing for the blade assembly. The support device is preferably fixedly connected to the first cutting element (e.g., with screws) so that the clamping device can then be supported by the support device. The blade assembly can also preferably include a guide slide that can then move the movable cutting element.

[0011] Preferably, the selection device may also include a selector switch, in particular designed as a slide or toggle switch. Such a selector switch, especially a slide switch, is particularly space-saving and can be designed to be unobtrusive.

[0012] The selection device preferably further comprises a detent device, wherein the detent device has several detent positions and wherein the detent device is engaged or disengaged in the first length setting mode and engaged in the second length setting mode. The detent device is preferably designed as a gear or rack on the cutting length setting device or the guide shaft. This detent device is then preferably provided complementarily on the selector switch. These teeth or detent ridges preferably have a triangular or trapezoidal cross-section, in particular with rounded corners or edges. Furthermore, the teeth on the cutting length setting device or the guide shaft and the teeth of the selector switch can slide over each other when force is applied, thus enabling a stepped adjustment of the longitudinal offset.

[0013] The selection device can be designed such that in the first length setting mode the longitudinal offset is adjustable in steps, and in the second length setting mode the longitudinal offset is continuously adjustable. The detent device is preferably disengaged in the first length setting mode.

[0014] The cutting length adjustment device also includes, in particular, an adjustment lever which is connected to the second cutting element and with which the second cutting element can be moved in the longitudinal direction relative to the first cutting element.

[0015] The adjustment lever is preferably reversibly connected to the cutting length adjustment device, so that it can be detached from the device. The connection between the adjustment lever and the cutting length adjustment device is particularly magnetic. This allows the adjustment lever to be easily removed from and reattached to the hair clipper, so that the lever no longer interferes with use and can be quickly reattached when the cutting length needs to be adjusted.

[0016] The adjustment lever can be connected to the cutting length adjustment device in two different positions, particularly at the two opposite ends of the device. This allows a hair clipper to be used by both right- and left-handed users, as the adjustment lever can be removed on one side and attached to the other. For this purpose, the adjustment lever is designed symmetrically along a central plane. It can also have a plug-in device on each of its ends, allowing the adjustment lever to be attached to the cutting length adjustment device. This eliminates the need to rotate the lever when switching sides of the cutting length adjustment device, and also allows for the use of other, potentially more ergonomic, non-symmetrical designs of the adjustment lever.

[0017] The adjusting lever is movable, in particular, in a range of 0° to 120°, preferably in a range of 0° to 90°, and especially preferably in a range of 0° to 70°, and particularly up to 62°. Furthermore, the cutting length adjusting device can be designed such that moving the adjusting lever towards a cutting area reduces the longitudinal offset, and moving the adjusting lever in the opposite direction increases the longitudinal offset.

[0018] The cutting length adjustment device is designed, in particular, as a guide shaft rotatable about an axis. Furthermore, the cutting length adjustment device preferably has at least one or two receptacles, which extend, in particular, radially to the axis. A plug-in cylinder of the guide slide preferably engages in each of these receptacles, the plug-in cylinders being mounted to be radially movable within the receptacle(s). In this way, the rotary movement of the cutting length adjustment device can be converted into a translational movement of the guide slide.

[0019] The blade arrangement preferably also includes a guide slide which interacts with the guide shaft of the cutting length adjustment device in such a way that a longitudinal movement of the guide slide is generated by rotating the guide shaft.

[0020] The cutting length adjustment device can further include a longitudinal offset indicator. This can be formed by markings (e.g., lines) or numbers and is preferably located in the area of ​​the lever. Preferably, the longitudinal offset indicator is designed as a scale, whereby the lever position at a specific point on the scale allows a conclusion to be drawn about a specific longitudinal offset.

[0021] Furthermore, the hair cutting device preferably has a coupling spring, wherein the cutting length adjustment device is coupled to the second cutting element by means of the coupling spring. Preferably, the coupling spring is also configured to transmit the longitudinal offset setting from the cutting length adjustment device to the second cutting element. In particular, the coupling spring is formed by the clamping element such that the coupling spring is configured to press the second cutting element against the first cutting element.

[0022] Longitudinal offset is the distance between two reference elements along a longitudinal axis of the hair cutting device or cutting set. This longitudinal axis extends from the operator to the cutting position during operation. A transverse axis runs perpendicular to the longitudinal axis and parallel to a cutting edge. The cutting edge is determined by the arrangement of the first and second cutting elements and corresponds to the edge or line where the cutting action, caused by the relative movement of these elements, occurs. Kurze Beschreibung der Figuren

[0023] Fig. 1a shows a hair cutting device in an isometric exploded view. Fig. 1b shows the in Fig. 1a Hair cutting device shown in a top view. Fig. 2a shows a cutting set in an isometric view. Fig. 2b shows the in Fig. 2a Cutting set shown in a top view. Fig. 2c shows the one in the Fig. 2a und 2b The cutting set shown without a support device is shown in an isometric view and in a first length adjustment mode. Fig. 2d shows the in Fig. 2c The cutting set shown is in a second length adjustment mode. Fig. 2e shows the in Fig. 2d The cutting set shown with support device and without the first cutting element is shown in a view from below. Fig. 2f shows the in Fig. 2c Cutting set shown in a side sectional view. Fig. 2g shows the one in the Fig. 2d and 2e Cutting set shown in a side sectional view. Fig. 3a shows a selector switch in an isometric view. Fig. 3b shows the in Fig. 3a Selector switch shown in a side view. Fig. 3c shows the one in the Fig. 3a und 3b The selection switch shown is in a top view. Fig. 3d shows the one in the Fig. 3a bis 3c The selection switch shown is in a view from below. Fig. 3e shows the one in the Fig. 3a bis 3d The selection switch shown is in a front view. Fig. 4a shows a leadership team in a front view. Fig. 4b shows the in Fig. 4a The leadership depicted is subject to oversight. Fig. 4c shows the one in the Fig. 4a und 4b The leadership team is shown in a sectional view from the front. Fig. 4d shows a cross-section through a plug-in cylinder and a guide slide mount; Fig. 5a shows the one in the Fig. 4a bis 4c The illustrated guide shaft with an adjustment lever is shown in a front view. Fig. 5b shows the in Fig. 5a depicted management team with adjustment lever in a supervisory position. Fig. 5c shows the one in the Fig. 5a und 5b Guide shaft with adjusting lever shown in a sectional view from the front. Fig. 6 shows a detent device with a complementary part of a selector switch. Fig. 7a shows another locking device with a complementary part of a selector switch. Fig. 7b shows another locking device with a complementary part of a selector switch. Fig. 7c shows another locking device with a complementary part of a selector switch. Fig. 8a shows another cutting set with an adjustment lever in an isometric view. Fig. 8b shows another cutting set with two adjustment levers in an isometric view. Fig. 9a shows the one in the Fig. 2c and 2f The cutting set shown has a slight longitudinal offset in an isometric view. Fig. 9b shows the in Fig. 9a The depicted cutting set shows a large longitudinal offset in an isometric view. Beschreibung der bevorzugten Ausführungsformen

[0024] Fig. 1a Figure 1 shows an isometric exploded view of a hair cutting device 100. The hair cutting device 100 has a drive device 105. The drive device 105 typically comprises an electric motor powered by a battery or via a cable. Furthermore, the hair cutting device 100 has a blade assembly 250, which preferably includes a first cutting element 110, a second cutting element 112, a guide carriage 120, a support device 170, and a coupling spring 180. A cutting length adjustment device is also provided, which is designed to adjust the longitudinal displacement between the first and second cutting elements. In the form shown here, this cutting length adjustment device has an adjusting lever 140, a selector 150 with a guide shaft 130, and a selector switch 160. The drive device 105 serves to drive the second cutting element 112.For this purpose, a drive receptacle 114 is provided on the second cutting element 112, which can be coupled to the drive device 105. Here, the drive receptacle 114 is designed as a double wing, between which an eccentrically rotating pin of the drive device is accommodated. The second cutting element 112 can be moved or driven by the drive device 105 along and in the opposite direction 402 relative to the first cutting element 110. The second cutting element 112 can also be moved along and in the opposite direction 401 relative to the first cutting element 110 by means of the adjusting lever 140.

[0025] Fig. 1b shows the in Fig. 1a The hair cutting device 100 shown is in a top view in a fully assembled state.

[0026] Fig. 2a Figure 200 shows a cutting set 200 in an isometric view. Except for the drive device 105, the cutting set 200 has the same components as those in the following figures. Fig. 1a und 1b The illustrated hair cutting device 100. The components shown are located differently from those in Fig. 1a The illustrated hair cutting device 100 is shown in its assembled, i.e., ready-to-use, state. The support device 170 covers the second cutting element 112, the coupling spring 180, the guide slide 120, and the guide shaft 130, or fixes them against the first cutting element 110 (see figure). Fig. 1a The selector switch 160 is exposed and therefore easily accessible to the operator. However, the selector switch 160 can also be covered, at least during operation, to prevent unintentional adjustment or displacement. The support device 170 has a recess in the area of ​​the drive mount 114, allowing the drive device 105 to be coupled to the drive mount 114.

[0027] Fig. 2b shows the in Fig. 2a Cutting set 200 shown in a top view.

[0028] Fig. 2c shows the one in the Fig. 2a und 2b The cutting set 200 shown without carrier device 170 in an isometric view and in a first length adjustment mode 301. The selector switch 160 is thereby displaced on the guide shaft 130 in the opposite direction to the transverse direction 402.

[0029] Fig. 2d shows the in Fig. 2c The cutting set 200 shown is in a second length adjustment mode 302. The selector switch 160 is thereby shifted along the transverse direction 402 on the guide shaft 130.

[0030] Fig. 2e shows the in Fig. 2d The illustrated cutting set 200 with carrier device 170 and without the first cutting element 112 is shown in a bottom view. The guide shaft 130 has a coupling spring receptacle 136 into which the coupling spring 180 is received. The coupling spring 180 is also connected to the second cutting element 112. The coupling spring 180 is guided along and against the longitudinal direction 401 by means of the guide slide 120. The second cutting element 112 is also movable along and against the longitudinal direction in this way.

[0031] Fig. 2f shows the in Fig. 2c The cutting set 200 shown is depicted in a side sectional view 500-500. The sectional view 500-500 corresponds to the one in Fig. 2e The section line shown and marked with reference numeral 500. The selection device 150 (see Fig. 1a ) has a detent device 132 which is arranged on the guide shaft 130. The detent device 132 is engaged with the selector switch 160. This configuration corresponds to the first length adjustment mode 301 (see ). Fig. 2c ), in which the longitudinal offset of the first and second cutting elements 110, 112 to each other is adjustable in steps.

[0032] Fig. 2g shows the one in the Fig. 2d and 2e The depicted cutting set 200 is also in Fig. 2f The side section view 500-500 is shown. The cutting set 200 is in the second length adjustment mode 302 (see figure). Fig. 2d ), i.e., the selector switch 160 is not engaged with the detent device 132. In the second length adjustment mode 302, the longitudinal offset of the first and second cutting elements 110, 112 relative to each other is continuously adjustable.

[0033] Fig. 3a Figure 1 shows a selector switch 160 in an isometric view. The selector switch 160 has two snap ridges 162, of which in Fig. 3a Only one is visible. The selector switch 160 can also have only one snap bead 162, or more than two snap bead 162, or no snap bead 162 at all. The snap bead 162 or snap bead 162 serves to lock the selector switch 160 in a selected position, which then corresponds to a length adjustment mode, e.g., the first or second length adjustment mode 301, 302. The locking of the selector switch 160 can be achieved, in particular, by means of the carrier device 170. For this purpose, the carrier device 170 can have one or more recesses that fit the snap bead 162 or snap bead 162, into which the snap bead 162 or snap bead 162 snaps and thus locks the selector switch 160 in a position on the guide shaft 130. To move the selector switch 160 out of its respective position, i.e., in the opposite direction or...To move the guide shaft 130 along the transverse direction 402, the operator must first overcome the resistance of the snap bead 162 or snap bead 162. The selector switch 160 also has three detent bead 164, which are designed to interact with the detent device 132. When the hair cutting device 100 or the cutting set 200 is in the first length setting mode 301, the three detent bead 164 prevent the guide shaft 130 from being continuously rotatable. Rather, the three detent bead 164 ensure that the guide shaft 130 can only be rotated in steps, i.e., from detent bead 164 to detent bead 164. Accordingly, the longitudinal offset of the first and second cutting elements 110, 112 relative to each other, i.e., along the longitudinal direction 401, is also only adjustable in steps. The fineness of the adjustment of the longitudinal offset corresponds to the distance between the individual detent ridges 164. Fewer detent ridges 164 are also possible, e.g.One or two rest ridges 164 may be provided, but also more than three rest ridges 164, e.g. five, ten or fifteen rest ridges 164.

[0034] Fig. 3b shows the in Fig. 3a The selector switch 160 is shown in a side view. The three detent ridges 164 are arranged essentially on a circular segment and are thus oriented towards the detent device 132, which is located on the essentially round guide shaft 130. The two snap ridges 162 project from the selector switch 160 opposite the longitudinal direction 401. Further orientations of the snap ridges 162 are also possible, for example, that they project from the selector switch 160 along the longitudinal direction 401, or along or opposite the transverse direction 402, or from a top surface of the selector switch 160.

[0035] Fig. 3c shows the one in the Fig. 3a und 3b The illustrated selector switch 160 is shown in a top view. Fig. 3c Both snap ridges 162 are visible. Fig. 3d shows the one in the Fig. 3a bis 3c The illustrated selector switch 160 is shown in a bottom view. Fig. 3d It can be seen that the selector switch 160 has three further detent ridges 164, each opposite one of the three in the Fig. 3a und 3b The visible resting ridges 164 are arranged. There is a free space between the opposing resting ridges 164. Fig. 3e shows the one in the Fig. 3a bis 3d The selector switch 160 is shown in a front view. The detent ridges 164 are not fixed. Preferably, a plurality of detent ridges 164 are formed on the guide shaft 130 or the selector switch itself, thus enabling a plurality of setting positions. Fewer detent ridges are provided on the complementary counterpart, preferably one to five, but especially the three detent ridges shown here. Three is the optimal number in terms of a compromise between wear, the force required for adjustment, and haptic feedback. Preferably, the detent ridges of the guide shaft 130 and the selector switch can also have different geometries, so that, for example, the selector switch has detent elements twice the size of those of the guide shaft. Finer detent elements can then be used to achieve finer increments.However, the geometry of the locking elements should be coordinated so that the locking elements can engage with each other simultaneously.

[0036] Fig. 4a Figure 1 shows a guide shaft 130 in a front view. The guide shaft 130 has two adjusting lever receptacles 134, each located at one lateral end. Each adjusting lever receptacle 134 can accommodate an adjusting lever 140 such that the guide shaft 130 can be rotated by means of the adjusting lever 140. The guide shaft 130 also has two guide slide receptacles 138, into which, in particular, two plug-in cylinders of the guide slide 120 can be accommodated. These plug-in cylinders 124 are arranged, in particular, on each arm of the guide slide 120, which extends in the direction of the guide shaft 130. When the guide shaft 130 is rotated, the guide slide 120, and thus the second cutting element 112, is displaced along or against the longitudinal direction 401. The guide shaft 130 also has two detent devices 132.The guide shaft 130 has a smooth surface immediately along the transverse direction 402 next to a detent device 132. If the selector switch 160 or its detent ridges 164 are located above the smooth surface, the longitudinal offset is continuously adjustable. The smooth surfaces are each essentially as wide as the one shown in the figure. Fig. 3d visible free space between the resting ridges 164.

[0037] Fig. 4b shows the in Fig. 4a The management team depicted is 130 members under supervision. In Fig. 4b It can be seen that the two guide carriage mounts 138 are each limited at their ends with respect to the longitudinal direction 401. This allows the guide carriage 120 to be guided safely both along and against the longitudinal direction 401.

[0038] Fig. 4c shows the one in the Fig. 4a und 4b The guide shaft 130 shown in a sectional view 510-510 from the front. The sectional view 510-510 corresponds to the one in Fig. 4b The section line shown and marked with reference numeral 510 indicates that the two adjusting lever receptacles 134 each project into the guide shaft 130 with respect to the transverse direction 402. This ensures that the adjusting lever 140 can be securely inserted into the respective adjusting lever receptacle 134.

[0039] In Figur 4d Figure 1 shows a cross-section through a guide slide receptacle 138 in which a plug-in cylinder 125 is arranged. The guide slide receptacle 138 is radially longer than the plug-in cylinder 125, so that the plug-in cylinder 125 can move radially to the axis of the guide shaft 130. When the guide shaft 130 rotates, the plug-in cylinder is displaced towards or away from the cutting elements 110, 112 (see arrow A) and slides radially in the guide slide receptacle 138.

[0040] Fig. 5a shows the one in the Fig. 4a bis 4d The illustrated guide shaft 130 with an adjusting lever 140 is shown in a front view. The adjusting lever 140 is received at its lower end in the adjusting lever receptacle 134 shown on the left in the view. The adjusting lever 140 also has a first actuation area 141, via which the adjusting lever 140 can be actuated or rotated along the longitudinal direction 401 (i.e., rotates about the axis 402). When the adjusting lever 140 is actuated accordingly, the guide shaft 130 is also rotated along the longitudinal direction 401 or about the axis 402 of the longitudinal axis of the guide shaft.

[0041] Fig. 5b shows the in Fig. 5a The illustrated guide shaft 130 with adjusting lever 140 is shown in a top view. The adjusting lever 140 also has a second actuation area 142, with which the adjusting lever 140 can be actuated in the opposite direction to the longitudinal direction 401. When the adjusting lever 140 is actuated accordingly, the guide shaft 130 is also rotated in the opposite direction to the longitudinal direction 401.

[0042] Fig. 5c shows the one in the Fig. 5a und 5b The illustrated guide shaft 130 with adjusting lever 140 is shown in a sectional view 520-520 from the front. The sectional view 520-520 corresponds to the one in Fig. 4b section line shown and marked with reference numeral 520.

[0043] Fig. 6 Figure 1 shows a detent device 132 with a complementary part of a selector switch 160. In Fig. 6 The part of the selector switch 160 in or on which the detent ridges 164 are arranged is shown. The detent device 132 has a plurality of detent teeth 133, wherein in Fig. 6 Only two detent teeth 133 are marked. The detent teeth 133 are designed to be complementary to the detent ridges 164. When the selector switch 160 is engaged with the detent device 132, a detent ridge 164 is arranged between two detent teeth 133, or vice versa, with each outer surface of a detent tooth 133 contacting an outer surface of a detent ridge 164. The fineness of the stepwise adjustment of the longitudinal offset in the first length adjustment mode 301 can be adjusted by means of the distance between the detent ridges 164 or detent teeth 133. Small distances between the detent ridges 164 or detent teeth 133 result in fine adjustment of the longitudinal offset, while large distances result in coarse adjustment. It is also possible that both the first and second length adjustment modes 301, 302 allow for stepless adjustment of the longitudinal offset.For this purpose, a voting system 150 may be provided (see . Fig. 1a ), with which the selector switch 160 can be moved between two differently designed detent devices 132, wherein the two detent devices 132 are designed with different configurations of the detent teeth 133 with each different distance between the detent teeth 133.

[0044] Fig. 7a Figure 1 shows another detent device 132 with a complementary part of a selector switch 160. The detent device 132 has a plurality of detent teeth 133 distributed over its entire circumference. This allows the guide shaft 130 to be rotated at least once completely about its longitudinal axis. Only two of the detent teeth 133 are marked with reference numerals. In contrast, the illustrated part of the selector switch 160 has only four adjacent detent ridges 164, of which only two are marked with reference numerals in the illustration.

[0045] Fig. 7b Figure 132 shows another detent device with a complementary part of a selector switch 160. The in Fig. 7b The depicted locking device 132 differs from the one shown in Fig. 7a The depicted detent device 132 has detent teeth 133 distributed around approximately half its circumference. This allows the guide shaft 130 to be rotated approximately 180°.

[0046] Fig. 7c Figure 1 shows another detent device 132 with a complementary part of a selector switch 160. The depicted part of the selector switch 160 has a plurality of detent ridges 164 or detent teeth 133 distributed around its entire circumference. The detent device 132, like the one in Figure 1, is a Fig. 7b The depicted locking device 132 has locking teeth 133 distributed around approximately half its circumference.

[0047] Fig. 8a shows another cutting set 200 with an adjustment lever 140 in an isometric view. Unlike the ones in the Fig. 2a bis 2e The cutting sets shown (200) are included in the [document / section]. Fig. 8a The adjusting levers of the cutting set 200 shown are arranged on the opposite side, i.e., along the transverse direction 402 at the far end of the cutting set 200, or, viewed in the longitudinal direction 401, on the right side of the cutting set 200. For this purpose, the guide shaft 130 has, as shown in the Fig. 4a bis 4c Two opposing adjustment lever mounts 134 are shown. This allows the adjustment lever 140 to be positioned on the left or right side of the cutting set 200, depending on the operator's preference, e.g., for a right-handed operator as in Fig. 8a shown on the right side or for a left-handed operator as in the Fig. 2a bis 2e shown on the left side.

[0048] Fig. 8b Figure 200 shows another cutting set with two adjustment levers 140 in an isometric view. Such a cutting set is easy to handle for both right- and left-handed operators.

[0049] Fig. 9a shows the one in the Fig. 2c and 2f The depicted cutting set 200 shows a slight longitudinal offset in an isometric view. The adjusting lever 140 is offset very far forward along the longitudinal direction 401. As a result, the guide shaft 130 is twisted along the longitudinal direction 401, and the leading edges of the first and second cutting elements 110, 112 are positioned close together.

[0050] Fig. 9b shows the in Fig. 9a The depicted cutting set 200 shows a large longitudinal offset in an isometric view. In contrast to the one in Fig. 9a In the configuration shown, the adjusting lever 140 is offset very far to the rear against the longitudinal direction 401. Thus, the guide shaft 130 is twisted against the longitudinal direction 401, and the front edges of the first and second cutting elements 110, 112 are positioned far apart. Bezugszeichenliste

[0051] 100 Hair cutting device 105 Drive device 110 First cutting element 112 Second cutting element 114 Drive mount 120 Guide carriage 124 Plug-in cylinder 130 Guide shaft 132 Detent device 133 Detent tooth 134 Adjustment lever mount 136 Coupling spring mount 138 Guide carriage mount 140 Adjustment lever 141 First operating range 142 Second operating range 150 Selector device 160 Selector switch 162 Snap bead 164 Detent bead 166 Sliding body 170 Carrier device 180 Coupling spring 200 Cutting set 250 Blade arrangement 301 First length adjustment mode 302 Second length adjustment mode 401 Longitudinal direction 402 Transverse direction 500-500 Sectional view 510-510 Sectional view 520-520 Sectional view

Claims

1. A hair cutting device (100), comprising a blade assembly (250) with a first cutting element (110) and a second, movable cutting element (112), a drive device that drives the blade assembly (250), and a cutting length adjustment device (130) which interacts with the second cutting element (112) in such a way that a longitudinal offset can be adjusted between the first cutting element (110) and the second cutting element (112), wherein the hair cutting device (100) further has a selector device (150) with which the cutting length adjustment device (130) can be adjusted between at least a first length adjustment mode (301) and at least a second length adjustment mode (302), characterized in that in the first length adjustment mode (301), the longitudinal offset is adjustable in continuous manner and, in the second length adjustment mode (302), the longitudinal offset is adjustable stepwise.

2. A cutting set (200) for a hair cutting device, comprising a blade assembly (250) with a first cutting element (110) and a second, movable cutting element (112), and a cutting length adjustment device (130) which interacts with the second cutting element (112) in such a way that a longitudinal offset can be adjusted between the first cutting element (110) and the second cutting element (112,) wherein the hair cutting device (200) further has a selector device (150) with which the cutting length adjustment device (130) can be adjusted between at least a first length adjustment mode (301) and at least a second length adjustment mode (302), characterized in that, in the first length adjustment mode (301), the longitudinal offset is adjustable in a or continuous manner and, in the second length adjustment mode (302), the longitudinal offset is adjustable stepwise.

3. The hair cutting device (100) or cutting set (200) according to any one of the preceding claims, wherein the selector device (150) further comprises a selection switch (160).

4. The hair cutting device (100) or cutting set (200) according to any one of the preceding claims, wherein the selector device (150) further comprises a latching device (132), wherein the latching device (132) has multiple latching positions, and wherein the latching device (132) is engaged or disengaged in the first length adjustment mode (301) and is engaged in the second length adjustment mode (302).

5. The hair cutting device (100) or cutting set (200) according to any one of the preceding claims, wherein the cutting length adjustment device is designed as a guide shaft (130) which is rotatable about an axis.

6. The hair cutting device (100) or cutting set (200) according to claims 4 or 5, wherein the latching device (132) is disengaged in the first length adjustment mode (301).

7. The hair cutting device (100) or cutting set (200) according to any one of the preceding claims, wherein the cutting length adjustment device further comprises an adjustment lever (140).

8. The hair cutting device (100) or cutting set (200) according to claim 7, wherein the adjustment lever (140) is reversibly connected to the cutting length adjustment device.

9. The hair cutting device (100) or cutting set (200) according to claim 8, wherein the adjustment lever (140) is connectable to the cutting length adjustment device at two different positions.

10. The hair cutting device (100) or cutting set (200) according to any one of claims 7 to 9, wherein the adjustment lever (140) is movable in a range of 0° to 120°, preferably in a range of 0° to 90° and particularly preferably in a range of 0° to 70°, in particular of 62°.

11. The hair cutting device (100) or cutting set (200) according to any one of claims 7 to 10, wherein the cutting length adjustment device is designed such that when the adjustment lever (140) is moved in the direction of a cutting region, the longitudinal offset is reduced and when the adjustment lever (140) is adjusted in the opposite direction the longitudinal offset is increased.

12. The hair cutting device (100) or cutting set (200) according to any one of claims 7 to 11, wherein the blade arrangement further comprises a guide carriage which interacts with the guide shaft of the cutting length adjustment device such that a longitudinal movement of the guide carriage is generated by rotating the guide shaft (130).

13. The hair cutting device (100) or cutting set (200) according to any one of the preceding claims, in particular according to any one of claims 7 to 12, wherein the cutting length adjustment device further has a longitudinal offset display.

14. The hair cutting device (100) or cutting set (200) according to any one of the preceding claims, further comprising a coupling spring (180), wherein the cutting length adjustment device is coupled to the second cutting element (112) by means of the coupling spring (180).

15. The hair cutting device (100) or cutting set (200) according to claim 14, wherein the coupling spring (180) is further adapted to press the second cutting element (112) against the first cutting element (110).