EP4364908A1 - Hair cutting device and cutting assembly for hair cutting device - Google Patents

Abstract

A hair cutting device (100) is disclosed, comprising a blade arrangement (250) with a first cutting element (110) and a second, movable cutting element (112), a drive device which drives the blade arrangement (200), and a cutting length adjustment device (130) which cooperates with the second cutting element (112) in such a way that a longitudinal offset can be set between the first cutting element (110) and the second cutting element (112), wherein the hair cutting device (100) further comprises a selection 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), wherein in the first length adjustment mode (301) the longitudinal offset can be adjusted stepwise or continuously and in the second length adjustment mode (302) the longitudinal offset can be adjusted stepwise.

Description

Field of the invention

The invention relates to a hair cutting device and a cutting set for a hair cutting device.

State of the art

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.

The blade arrangement generally has two cutting elements, the first of which is firmly connected to the rest of the hair cutting device and the second is arranged so that it can move relative to the first. Cutting elements with comb-like cutting edges are often used, with the first cutting element being designed as a so-called shearing comb and coming into contact with the skin of the person or animal to be treated or the user. The second cutting element is then designed as a so-called shearing blade. Each cutting element has a row of teeth spaced apart from one another, with the teeth generally being arranged at equal distances from one another. Such a blade arrangement can be designed so that different cutting lengths can be set with it. The cutting length of such an adjustable blade arrangement is adjusted by longitudinally offsetting the two cutting elements relative to one another, with the movable cutting element generally being longitudinally offset.

State-of-the-art solutions for adjusting the cutting length are known that allow for either continuous or step-by-step adjustment. Both variants are used with roughly equal frequency, although one or the other is usually preferred depending on the user. This means that, particularly in hair salons with several hairdressers, there are both continuously adjustable hair cutting devices and step-by-step adjustable hair cutting devices, although the majority of these two variants are not used. As a result, the hair salons in question have low machine efficiency, which reduces overall profitability.

State-of-the-art solutions are therefore not very economical, inflexible and often do not offer optimal adjustment options.

Description of the invention

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.

The object is achieved by a hair cutting device according to patent claim 1 and a cutting set for a hair cutting device according to patent claim 2. Further features embodying the invention are contained in the dependent patent 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 such that a longitudinal offset can be set 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. continuously, 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 has a blade arrangement with a first cutting element and a second, movable cutting element and a cutting length adjustment device which cooperates with the second cutting element in such a way that a longitudinal offset can be set between the first cutting element and the second cutting element, wherein the cutting set further has a selection device with which the cutting length adjustment device can be adjusted between at least one first length adjustment mode and at least one second length adjustment mode, wherein in the first length adjustment mode the longitudinal offset can be adjusted stepwise or continuously, i.e. continuously, and in the second length adjustment mode the longitudinal offset can be adjusted stepwise. Such a selection device has the advantage that at least two different adjustment modes can be provided with a hair cutting device (e.g. continuous and stepped) and therefore enables a extremely flexible hair clipper or a flexible cutting set for a hair clipper. Furthermore, a cutting set with this selection device can also be retrofitted to a hair clipper. The cutting elements are preferably designed like a comb, i.e. they have corresponding teeth, 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 to be treated or 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 in the case of comb-like cutting elements, leads to a minimum or maximum overlap of the cutting elements. The blade arrangement preferably also has a tensioning element (e.g. a coupling spring) for pre-tensioning the cutting elements against one another, and a carrier device that serves as a housing for the blade arrangement. The carrier device is preferably firmly connected to the first cutting element (eg with screws), so that the clamping device can then be supported on the carrier device. The blade arrangement can also preferably comprise a guide carriage, which can then displace the movable cutting element.

Preferably, the selection device can also have a selector switch, in particular designed as a slide or toggle switch. Such a selector switch, in particular a slide switch, is particularly space-saving and can be designed inconspicuously.

The selection device preferably also has a locking device, the locking device having a number of locking positions and the locking device being locked or unlocked in the first length setting mode and locked in the second length setting mode. The locking device is preferably designed like a gear or rack on the cutting length setting device or the guide shaft. This locking device is then preferably provided complementarily on the selection switch. These teeth or locking beads 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 selection switch can slide over one another by applying force, so that a stepped adjustment of the longitudinal offset is possible.

The selection device can be designed such that in the first length adjustment mode the longitudinal offset can be adjusted in steps and in the second length adjustment mode the longitudinal offset can be adjusted continuously. The locking device is preferably disengaged in the first length adjustment mode.

The cutting length adjustment device further comprises, in particular, an adjustment lever which is connected to the second cutting element and with which the second cutting element can be displaced in the longitudinal direction relative to the first cutting element.

The adjustment lever is preferably reversibly connected to the cutting length adjustment device, so that it can be detached from the cutting length adjustment device. The adjustment lever is connected to the cutting length adjustment device in particular magnetically. This means that the adjustment lever can be easily removed from the hair cutting device and reattached, so that the lever no longer interferes with use and can be quickly reattached if the cutting length needs to be adjusted.

The adjustment lever can be connected to the cutting length adjustment device at two different positions, in particular at the two opposite ends of the cutting length adjustment device. A hair cutting device can thus be used by both right-handed and left-handed people, in that the adjustment lever can be removed on one side and attached to the other side. The adjustment lever is designed in particular symmetrically along a central plane. It can also have a plug-in device on each of its two sides with which the adjustment lever can be plugged onto the cutting length adjustment device. This means that the lever does not have to be turned when changing sides of the cutting length adjustment device and other possibly more ergonomic designs of the adjustment lever that are not symmetrical can also be used.

The adjustment lever is movable in particular in a range from 0° to 120°, preferably in a range from 0° to 90° and particularly preferably in a range from 0° to 70°, in particular up to 62°. Furthermore, the cutting length adjustment device can be designed such that when the adjustment lever is moved in the direction of a cutting area, the longitudinal offset is reduced and when the adjustment lever is moved in the opposite direction, the longitudinal offset is increased.

The cutting length adjustment device is designed in particular as a guide shaft that can be rotated about an axis. Furthermore, the cutting length adjustment device preferably has at least one or two receptacles that extend in particular radially to the axis. A plug-in cylinder of the guide carriage then preferably engages in each of these receptacles, with the plug-in cylinders being mounted so that they can move radially in the receptacle(s). In this way, the rotary movement of the cutting length adjustment device can be converted into a translatory movement of the guide carriage.

The blade arrangement preferably further comprises a guide carriage which cooperates with the guide shaft of the cutting length adjustment device in such a way that a longitudinal movement of the guide carriage is generated by rotating the guide shaft.

The cutting length adjustment device can also have a longitudinal offset indicator. This can be formed by markings (e.g. lines) or numbers and is arranged in particular in the area of the lever. The longitudinal offset indicator is preferably designed as a scale, whereby the lever position at a certain point on the scale allows a conclusion to be drawn about a certain longitudinal offset.

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 designed to transfer the setting of the longitudinal offset from the cutting length adjustment device to or to the second cutting element. In particular, the coupling spring is formed by the tensioning element, so that the coupling spring is designed to press the second cutting element against the first cutting element.

The longitudinal offset is the distance between two reference elements along a longitudinal axis of the hair cutting device or the cutting set. The longitudinal axis corresponds to an axis that extends from the operator to a position where hair is cut when the hair cutting device or the cutting set is in operation. A transverse axis runs perpendicular to the longitudinal axis and parallel to a cutting edge. The cutting edge results from the arrangement of the first and second cutting elements and corresponds to the edge or line at which the cutting effect caused by the relative movement of the first and second cutting elements occurs.

Short description of the characters

• Fig. 1a shows a hair cutting device in an isometric exploded view.
• Fig. 1b shows the Fig. 1a shown hair cutting device in a top view.
• Fig. 2a shows a cutting set in an isometric view.
• Fig. 2b shows the Fig. 2a shown cutting set in a top view.
• Fig. 2c shows the Fig. 2a and 2b shown cutting set without carrier device in an isometric view and in a first length adjustment mode.
• Fig. 2d shows the Fig. 2c shown cutting set in a second length adjustment mode.
• Fig. 2e shows the Fig. 2d shown cutting set with carrier device and without first cutting element in a view from below.
• Fig. 2f shows the Fig. 2c shown cutting set in a side sectional view.
• Fig. 2g shows the Fig. 2d and 2e shown cutting set in a side sectional view.
• Fig. 3a shows a selector switch in an isometric view.
• Fig. 3b shows the Fig. 3a shown selector switch in a side view.
• Fig. 3c shows the Fig. 3a and 3b Selector switch shown in a top view.
• Fig. 3d shows the Fig. 3a to 3c Selector switch shown in a view from below.
• Fig. 3e shows the Fig. 3a to 3d shown selector switch in a front view.
• Fig. 4a shows a guide shaft in a front view.
• Fig. 4b shows the Fig. 4a represented leadership in a supervisory role.
• Fig. 4c shows the Fig. 4a and 4b shown guide shaft in a sectional view from the front.
• Fig. 4d shows a cross-section through a plug-in cylinder and a guide carriage holder;
• Fig. 5a shows the Fig. 4a to 4c shown guide shaft with an adjustment lever in a front view.
• Fig. 5b shows the Fig. 5a shown guide shaft with adjustment lever in a top view.
• Fig. 5c shows the Fig. 5a and 5b shown guide shaft with adjustment lever in a sectional view from the front.
• Fig.6 shows a locking 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 Fig. 2c and 2f shown cutting set with a slight longitudinal offset in an isometric view.
• Fig. 9b shows the Fig. 9a shown cutting set with a large longitudinal offset in an isometric view.

Description of the preferred embodiments

Fig. 1a shows a hair cutting device 100 in an isometric exploded view. The hair cutting device 100 has a drive device 105. The drive device 105 usually has an electric motor supplied with energy from a battery or via a cable. The hair cutting device 100 also has a blade arrangement 250, which preferably comprises a first cutting element 110, a second cutting element 112, a guide carriage 120, a carrier device 170 and a coupling spring 180. Furthermore, 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 adjustment lever 140, a selection device 150 with a guide shaft 130 and a selection switch 160. The drive device 105 serves to drive the second cutting element 112. For this purpose, a drive mount 114 is provided on the second cutting element 112, which can be coupled to the drive device 105. Here, the drive mount 114 is designed as a double wing, between which an eccentrically rotating pin of the drive device is received. The second cutting element 112 can be moved or driven by means of the drive device 105 along and against a transverse direction 402 relative to the first cutting element 110. The second cutting element 112 can also be moved by means of the adjustment lever 140 along and against a longitudinal direction 401 relative to the first cutting element 110.

Fig. 1b shows the Fig. 1a illustrated hair cutting device 100 in a plan view in a completely assembled state.

Fig. 2a shows a cutting set 200 in an isometric view. The cutting set 200 has the same components as the cutting set 200 shown in the Fig. 1a and 1b The components shown are, in contrast to the hair cutting device 100 shown in Fig. 1a shown hair cutting device 100 in the assembled, ie operational, state. The carrier device 170 covers the second cutting element 112, the coupling spring 180, the guide carriage 120 and the guide shaft 130 or fixes them against the first cutting element 110 (cf. Fig. 1a ). The selector switch 160 is exposed and thus easily accessible for an operator. The selector switch 160 can, however, also be covered, at least during operation, so that unintentional adjustment or displacement can be prevented. In the area of the drive mount 114, the carrier device 170 has a recess so that the drive device 105 can be coupled to the drive mount 114.

Fig. 2b shows the Fig. 2a shown cutting set 200 in a top view.

Fig. 2c shows the Fig. 2a and 2b illustrated cutting set 200 without carrier device 170 in an isometric view and in a first length adjustment mode 301. The selector switch 160 is displaced counter to the transverse direction 402 on the guide shaft 130.

Fig. 2d shows the Fig. 2c illustrated cutting set 200 in a second length adjustment mode 302. The selector switch 160 is displaced along the transverse direction 402 on the guide shaft 130.

Fig. 2e shows the Fig. 2d illustrated cutting set 200 with carrier device 170 and without first cutting element 112 in a view from below. The guide shaft 130 has a coupling spring receptacle 136 in 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 by means of the guide slide 120 along or against the longitudinal direction 401. In this way, the second cutting element 112 can also be moved along or against the longitudinal direction.

Fig. 2f shows the Fig. 2c shown cutting set 200 in a side sectional view 500-500. The sectional view 500-500 corresponds to the Fig. 2e shown and marked with the reference numeral 500. The selection device 150 (cf. Fig. 1a ) has a locking device 132 which is arranged on the guide shaft 130. The locking device 132 is in engagement with the selector switch 160. This configuration corresponds to the first length adjustment mode 301 (cf. Fig. 2c ), in which the longitudinal offset of the first and second cutting elements 110, 112 relative to one another can be adjusted in steps.

Fig. 2g shows the Fig. 2d and 2e shown cutting set 200 in the also in Fig. 2f shown, side sectional view 500-500. The cutting set 200 is in the second length adjustment mode 302 (cf. Fig. 2d ), ie the selector switch 160 is not engaged with the locking device 132. In the second length adjustment mode 302, the longitudinal offset of the first and second cutting elements 110, 112 relative to one another is continuously adjustable.

Fig. 3a shows a selector switch 160 in an isometric view. The selector switch 160 has two snap beads 162, of which Fig. 3a only one is visible. The Selector switch 160 can also have just one snap bead 162 or more than two snap bead 162 or no snap bead 162 at all. The snap bead 162 or the snap bead 162 serve to lock the selector switch 160 in a selection position, which then corresponds to a length adjustment mode, for example the first or second length adjustment mode 301, 302. The locking of the selector switch 160 can be designed in particular with the aid of the carrier device 170. For this purpose, the carrier device 170 can have one or more recesses that match the snap bead 162 or the snap bead 162, into which the snap bead 162 or snap bead 162 snaps and thus locks a positioning of the selector switch 160 on the guide shaft 130. In order to move the selector switch 160 out of the respective position again, i.e. to move it against or along the transverse direction 402, the operator must first overcome the resistance of the snap bead 162 or the snap beads 162. The selector switch 160 also has three locking beads 164 which are designed to interact with the locking device 132. If the hair cutting device 100 or the cutting set 200 is in the first length adjustment mode 301, the three locking beads 164 prevent the guide shaft 130 from being continuously rotated. Instead, the three locking beads 164 ensure that the guide shaft 130 can only be rotated in steps, i.e. from locking bead 164 to locking bead 164. Accordingly, the longitudinal offset of the first and second cutting elements 110, 112 to one another, ie along the longitudinal direction 401, can also only be adjusted in steps. The fineness of the adjustability of the longitudinal offset corresponds to the distance between the individual locking beads 164. In addition, fewer locking beads 164 can be provided, for example one locking bead 164 or two locking beads 164, but also more than three locking beads 164, for example five, ten or fifteen locking beads 164.

Fig. 3b shows the Fig. 3a shown selector switch 160 in a side view. The three locking beads 164 are arranged essentially on a circular section and are thus arranged facing the locking device 132, which is located on the essentially round guide shaft 130. The two snap beads 162 protrude from the selector switch 160 in the opposite direction to the longitudinal direction 401. Other orientations of the snap beads 162 are also possible, for example that they protrude from the selector switch 160 along the longitudinal direction 401, or protrude from the selector switch 160 along or in the opposite direction to the transverse direction 402 or from an upper side of the selector switch 160.

Fig. 3c shows the Fig. 3a and 3b shown selector switch 160 in a top view. In Fig. 3c both snap beads 162 are visible. Fig. 3d shows the Fig. 3a to 3c shown selector switch 160 in a view from below. In Fig. 3d It can be seen that the selector switch 160 has three further locking beads 164, each of which is opposite one of the three in the Fig. 3a and 3b visible locking beads 164 are arranged. There is a free space between the opposing locking beads 164. Fig. 3e shows the Fig. 3a to 3d shown selector switch 160 in a view from the front. Basically, the locking beads 164 are not fixed. Preferably, a plurality of locking beads 164 are formed on the guide shaft 130 or the selector switch, so that a plurality of adjustment levels are possible. Fewer locking beads are provided on the complementary counter element, preferably one to five locking beads, but in particular the three locking beads shown here. Three is the best number in terms of a compromise between wear, force to be applied for adjustment and haptic feedback. Preferably, the locking beads of the guide shaft 130 and the selector switch can each have a different geometry, so that, for example, the selector switch has locking elements twice as large as the guide shaft. Finer gradation can then be achieved by using finer locking elements. The geometry of the locking elements should, however, be coordinated so that the locking elements can engage with one another at the same time.

Fig. 4a shows a guide shaft 130 in a view from the front. The guide shaft 130 has two adjustment lever receptacles 134 arranged at each lateral end. An adjustment lever 140 can be received in each of the adjustment lever receptacles 134 such that the guide shaft 130 can be rotated by means of the adjustment lever 140. The guide shaft 130 also has two guide carriage receptacles 138, in which in particular two plug-in cylinders of the guide carriage 120 can be received. These plug-in cylinders 124 are in particular arranged on one arm of the guide carriage 120, which extends in the direction of the guide shaft 130. If the guide shaft 130 is rotated, the guide carriage 120 and thus the second cutting element 112 are displaced along or against the longitudinal direction 401. The guide shaft 130 also has two locking devices 132. The guide shaft 130 has a smooth surface directly along the transverse direction 402 next to a locking device 132. If the selector switch 160 or its locking beads 164 are located above the smooth surface, the longitudinal offset can be continuously adjusted. The smooth surfaces are essentially as wide as the Fig. 3d visible space between the locking beads 164.

Fig. 4b shows the Fig. 4a shown guide shaft 130 in a top view. In Fig. 4b It can be seen that the two guide carriage receptacles 138 are each limited at the end with respect to the longitudinal direction 401. This makes it possible for the guide carriage 120 to be guided safely both along and against the longitudinal direction 401.

Fig. 4c shows the Fig. 4a and 4b shown guide shaft 130 in a sectional view 510-510 from the front. The sectional view 510-510 corresponds to the Fig. 4b shown and marked with the reference numeral 510. It can be seen that the two adjustment lever receptacles 134 each protrude into the guide shaft 130 with respect to the transverse direction 402. In this way, it can be made possible that the adjustment lever 140 can be securely received in the respective adjustment lever receptacle 134.

In Figure 4d is a cross-section through a guide carriage holder 138 in which a plug-in cylinder 125 is arranged. The guide carriage holder 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 moved in the direction of the cutting elements 110, 112 or away from them (see arrow A) and slides radially in the guide carriage holder 138.

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

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

Fig. 5c shows the Fig. 5a and 5b shown guide shaft 130 with adjustment lever 140 in a sectional view 520-520 from the front. The sectional view 520-520 corresponds to the Fig. 4b shown and marked with the reference numeral 520.

Fig.6 shows a locking device 132 with a complementary part of a selector switch 160. In Fig.6 The part of the selector switch 160 is shown in or on which the locking beads 164 are arranged. The locking device 132 has a plurality of locking teeth 133, wherein in Fig.6 only two locking teeth 133 are marked. The locking teeth 133 are designed to be complementary to the locking beads 164. If the selector switch 160 is in engagement with the locking device 132, a locking bead 164 is arranged between two locking teeth 133 or a locking tooth 133 is arranged between two locking beads 164, with an outer surface of a locking tooth 133 touching an outer surface of a locking bead 164. The fineness of the step-by-step adjustment of the longitudinal offset in the first length adjustment mode 301 can be adjusted by means of the distance between the locking beads 164 or locking teeth 133. If the distances between the locking beads 164 or locking teeth 133 are small, the longitudinal offset can be adjusted finely, while if the distances are large, the longitudinal offset can be adjusted coarsely. It is also possible that both the first and the second length adjustment mode 301, 302 allow a step-by-step adjustment of the longitudinal offset. A selection device 150 can be provided for this purpose (see. Fig. 1a ), with which the selector switch 160 can be displaced between two differently designed locking devices 132, wherein the two locking devices 132 are designed with different configurations of the locking teeth 133 with a different distance between the locking teeth 133.

Fig. 7a shows a further locking device 132 with a part of a selector switch 160 that is complementary to this one. The locking device 132 has a plurality of locking teeth 133 that are distributed over the entire circumference of the locking device 132. This makes it possible for the guide shaft 130 to be completely rotated around its longitudinal axis at least once. Only two of the locking teeth 133 are identified with reference numerals. The part of the selector switch 160 shown, on the other hand, has only four adjacent locking beads 164, of which only two are identified with reference numerals in the illustration.

Fig. 7b shows a further locking device 132 with a complementary part of a selector switch 160. The Fig. 7b The locking device 132 shown in Difference to the Fig. 7a The locking device 132 shown has locking teeth 133 distributed only around approximately half its circumference. This enables the guide shaft 130 to be rotated by approximately 180°.

Fig. 7c shows a further locking device 132 with a part of a selector switch 160 that is complementary to this. The part of the selector switch 160 shown has a plurality of locking beads 164 or locking teeth 133 distributed around its entire circumference. The locking device 132, like the one in Fig. 7b The locking device 132 shown has locking teeth 133 distributed around approximately half its circumference.

Fig. 8a shows another cutting set 200 with an adjustment lever 140 in an isometric view. In contrast to the Fig. 2a to 2e The cutting sets 200 shown in Fig. 8a illustrated cutting set 200, the adjustment lever is arranged on the opposite side, ie 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. The guide shaft 130 has for this purpose as shown in the Fig. 4a to 4c shown two opposing adjustment lever receptacles 134. In this way, it can be made possible that the adjustment lever 134 is arranged on the left or right of the cutting set 200 depending on the operator's preference, for example 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 to 2e shown on the left.

Fig. 8b shows another cutting set 200 with two adjustment levers 140 in an isometric view. Such a cutting set can be easily handled by both right-handed and left-handed operators.

Fig. 9a shows the Fig. 2c and 2f shown cutting set 200 with a slight longitudinal offset in an isometric view. The adjustment lever 140 is offset very far forward along the longitudinal direction 401. In this way, the guide shaft 130 is rotated along the longitudinal direction 401 and the front edges of the first and second cutting elements 110, 112 are arranged close to one another.

Fig. 9b shows the Fig. 9a shown cutting set 200 with a large longitudinal offset in an isometric view. In contrast to the cutting set shown in Fig. 9a In the configuration shown, the adjustment lever 140 is offset very far to the rear against the longitudinal direction 401. In this way, the guide shaft 130 is rotated against the longitudinal direction 401 and the front edges of the first and second cutting elements 110, 112 are arranged far apart.

List of reference symbols

100

Hair clipper

105

Drive device

110

first cutting element

112

second cutting element

114

Drive mount

120

Guide carriage

124

Plug-in cylinder

130

Leadership

132

Locking device

133

Ratchet tooth

134

Adjustment lever holder

136

Coupling spring holder

138

Guide carriage holder

140

Adjustment lever

141

first area of operation

142

second operating area

150

Voting facility

160

Selector switch

162

Snap bead

164

Locking 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

Section view

510-510

Section view

520-520

Section view

Claims (15)

Hair cutting device (100), comprising a blade assembly (250) having a first cutting element (110) and a second, movable cutting element (112), a drive device that drives the blade assembly (200), and a cutting length adjustment device (130) which cooperates with the second cutting element (112) in such a way that a longitudinal offset can be set between the first cutting element (110) and the second cutting element (112) , characterized in that the hair cutting device (100) further comprises a selection 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), wherein in the first length adjustment mode (301) the longitudinal offset can be adjusted stepwise or continuously and in the second length adjustment mode (302) the longitudinal offset can be adjusted stepwise. Cutting set (200) for a hair cutting device, comprising a blade assembly (250) having a first cutting element (110) and a second, movable cutting element (112), and a cutting length adjustment device (130) which cooperates with the second cutting element () such that a longitudinal offset can be set between the first cutting element () and the second cutting element () characterized in that the cutting set (200) further comprises a selection 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), wherein in the first length adjustment mode (301) the longitudinal offset can be adjusted stepwise or continuously and in the second length adjustment mode (302) the longitudinal offset can be adjusted stepwise. Hair cutting device (100) or cutting set (200) according to one of the preceding claims, wherein the selection device (150) further comprises a selector switch (160). Hair cutting device (100) or cutting set (200) according to one of the preceding claims, wherein the selection device (150) further comprises a locking device (132), wherein the locking device (132) has a plurality of locking positions, and wherein the locking device (132) is locked or unlocked in the first length adjustment mode (301) and is locked in the second length adjustment mode (302). Hair cutting device (100) or cutting set (200) according to one of the preceding claims, wherein the cutting length adjustment device is designed as a guide shaft (130) rotatable about an axis. Hair cutting device (100) or cutting set (200) according to claims 4 or 5, wherein the locking device (132) is disengaged in the first length adjustment mode (301). Hair cutting device (100) or cutting set (200) according to one of the preceding claims, wherein the cutting length adjustment device further comprises an adjustment lever (140). 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. Hair cutting device (100) or cutting set (200) according to claim 8, wherein the adjustment lever (132) is connectable to the cutting length adjustment device at two different positions. Hair cutting device (100) or cutting set (200) according to one of claims 7 to 9, wherein the adjusting lever () is movable in a range from 0° to 120°, preferably in a range from 0° to 90° and particularly preferably in a range from 0° to 70°, in particular 62°. Hair cutting device (100) or cutting set (200) according to one of claims 7 to 10, wherein the cutting length adjustment device is designed such that By moving the adjusting lever (140) in the direction of a cutting area, the longitudinal offset is reduced and by moving the adjusting lever (132) in the opposite direction, the longitudinal offset is increased. Hair cutting device (100) or cutting set (200) according to one of claims 7 to 11, wherein the blade arrangement further comprises a guide carriage which cooperates 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). Hair cutting device (100) or cutting set (200) according to one of the preceding claims, in particular according to one of claims 7 to 12, wherein the cutting length adjustment device further comprises a longitudinal offset indicator. Hair cutting device (100) or cutting set (200) according to 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). Hair cutting device (100) or cutting set (200) according to claim 14, wherein the coupling spring (180) is further configured to press the second cutting element (112) against the first cutting element (110).

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