Hair cutting appliance and cutting unit for hair cutter
By introducing selector equipment and cutting length adjustment device into hair cutting equipment, graded or continuous cutting length adjustment is achieved, solving the problem of inflexible and economical existing equipment and improving the efficiency and economicality of the equipment.
Patent Information
- Application Number
- CN202380077220.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-11-07
- Filing Date
- 2023-11-07
- Publication Date
- 2025-06-20
AI Technical Summary
Existing hair cutting equipment is not flexible and economical enough when adjusting the cutting length, and the adjustment options usually provided are not good, resulting in less efficient machine efficiency in hair salons and lower overall economic benefits.
A hair cutting device is designed, including a blade device, a driving device and a cutting length adjustment device. The selector device is used to switch between different length adjustment modes to achieve graded or continuous longitudinal offset adjustment.
Through this solution, hair cutting equipment achieves cost-effective, flexible and easy to adjust cutting length settings, improving equipment flexibility and economicality, and enhancing machine efficiency and overall economic benefits of hair salons.
Smart Images
Figure CN120187567A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a hair cutting device and a cutting kit for a hair cutting device. Background Art
[0002] Hair cutting devices are known in the prior art and in particular include a blade assembly provided at the front end of the hair cutting device and adapted to cut hair.
[0003] The blade assembly typically has two cutting elements, wherein the first cutting element is firmly connected to the remainder of the hair cutting device and wherein the second cutting element is arranged to be movable relative to the first cutting element. Cutting elements with comb-shaped cutting edges are typically used, in which case the first cutting element is designed as a so-called shear comb and contacts the skin of the person or animal or user to be cared for. The second cutting element is then designed as a so-called shear blade. Each cutting element has a series of spaced teeth, where the teeth are typically arranged to be evenly spaced from each other. Such a blade device can be designed such that different cutting lengths can be adjusted. The cutting length of such an adjustable blade device is adjusted by longitudinally offsetting the two cutting elements relative to each other, where the movable cutting element is typically longitudinally offset.
[0004] Solutions for adjusting the cutting length are known in the prior art, which enable continuous or stepped adjustment. These two variants occur with approximately the same frequency, and usually the user will choose one variant or the other according to preference. This means that, especially in hair salons with multiple hair stylists, both continuously adjustable hair cutting devices and stepwise adjustable hair cutting devices are available, although most of these two variants are not used. Therefore, the machines in the hair salons under discussion are less efficient, thereby reducing the overall economic efficiency.
[0005] Therefore, the solutions known in the prior art are less economical, less flexible and generally do not provide optimal adjustment options. Summary of the Invention
[0006] Therefore, the object of the present invention is to overcome the problems known in the prior art, namely to provide a cost-effective, flexible and easy-to-adjust solution.
[0007] This object is achieved by the hair cutting device according to claim 1 and the cutting kit for a hair cutting device according to claim 2. Further features constituting the present invention are included in the dependent claims.
[0008] A hair cutting device according to the present invention includes: a blade device having a first cutting element and a second movable cutting element; a drive device for driving the blade device; and a cutting length adjustment device that interacts with the second cutting element such that a longitudinal offset between the first cutting element and the second cutting element can be adjusted, wherein the hair cutting device further has a selector device by 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., in a stepless manner), and in the second length adjustment mode, the longitudinal offset can be adjusted stepwise or continuously (i.e., can be adjusted in a stepless manner), and in the second length adjustment mode, the longitudinal offset can be adjusted stepwise. In addition, a cutting kit for a hair cutting device according to the present invention includes: a blade device having a first cutting element and a second movable cutting element; and a cutting length adjustment device that interacts with the second cutting element such that a longitudinal offset between the first cutting element and the second cutting element can be adjusted, wherein the cutting kit further has a selector device by 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., in a stepless manner), and in the second length adjustment mode, the longitudinal offset can be adjusted stepwise. The advantage of such a selector device is that it can provide at least two different adjustment modes (e.g., continuous and stepwise) for the hair cutting device, and thus an extremely flexible hair cutting machine or a flexible cutting device for a hair cutting machine can be achieved. In addition, the cutting device with this selector device can also be retrofitted to a hair cutting machine. The cutting elements are preferably designed in a comb shape, i.e., they have corresponding teeth, wherein the first cutting element is particularly designed as a fixed shear comb that contacts the skin of the person or animal or user to be cared for. The second cutting element can also be designed as a movable shear blade. The cutting elements are adjusted between a maximum longitudinal offset (maximum cutting length) and a minimum longitudinal offset (minimum cutting length), for example, in the case of comb-shaped cutting elements, this results in a minimum or maximum overlap of the cutting elements. Preferably, the blade device further has a tensioning element (e.g., a coupling spring) for biasing the cutting elements against each other and a bearing device serving as a housing for the blade device. The bearing device is preferably firmly connected to the first cutting element (e.g., by screws) such that the tensioning device can be supported on the bearing device. The blade device may also preferably include a guide frame that can subsequently move the movable cutting element.
[0009] Preferably, the selector device may also have a selector switch, which is in particular designed as a slide switch or a toggle switch. Such a selector switch, in particular a slide switch, is particularly space-saving and can be designed to be unobtrusive.
[0010] The selector device also preferably has a latching device, wherein the latching device has a plurality of latching positions, and wherein the latching device engages or disengages in the first length adjustment mode and engages in the second length adjustment mode. The latching device is preferably designed as a gear or a rack on the cutting length adjustment device or the guide shaft. Then, the latching device is preferably arranged on the selector switch in a complementary manner. These teeth or latching rib-like parts preferably have a triangular or trapezoidal cross-section, in particular with rounded corners or edges. Furthermore, by applying a force, the teeth on the cutting length adjustment device or the guide shaft and the teeth of the selector switch can slide over each other, so that the longitudinal offset can be adjusted stepwise.
[0011] The selector device can be designed such that the longitudinal offset can be adjusted stepwise in the first length adjustment mode and continuously in the second length adjustment mode. In the first length adjustment mode, the latching device is preferably disengaged.
[0012] The cutting length adjustment device in particular also has an adjustment lever, which is connected to the second cutting element and by means of which the second cutting element can be displaced relative to the first cutting element in the longitudinal direction.
[0013] The adjustment lever is preferably reversibly connected to the cutting length adjustment device, such that it is designed to be removable from the cutting length adjustment device. The adjustment lever is in particular magnetically connected to the cutting length adjustment device. This means that the adjustment lever can be easily removed from and replaced on the hair cutting device, so that the adjustment lever no longer interferes with use and can be quickly reattached when the cutting length is to be adjusted as desired.
[0014] The adjustment joystick can be connected to the cutting length adjustment device at two different positions, in particular at two opposite ends of the cutting length adjustment device. By removing the adjustment joystick on one side and attaching it to the other side, both right-handed and left-handed people can use the hair cutting device. For this purpose, the adjustment joystick is designed symmetrically in particular along the central plane. It can also have plug-in devices on both sides, through which the adjustment joystick can be inserted into the cutting length adjustment device. This means that it is not necessary to rotate the joystick when changing the side of the cutting length adjustment device, and other possible more ergonomic configurations of the asymmetric adjustment joystick can also be used.
[0015] The adjustment joystick can be moved in particular in the range from 0° to 120°, preferably in the range from 0° to 90°, particularly preferably in the range from 0° to 70°, especially up to 62°. In addition, the cutting length adjustment device can be designed such that when the adjustment joystick is moved in the direction of the cutting area, the longitudinal offset decreases, and when the adjustment joystick is adjusted in the opposite direction, the longitudinal offset increases.
[0016] The cutting length adjustment device is in particular designed as a guide shaft that can rotate about an axis. In addition, the cutting length adjustment device preferably has at least one or two sockets that extend radially in particular with respect to the axis. Then, the plug-in cylinders of the guide frame are preferably engaged in these sockets, wherein the plug-in cylinders are mounted such that they can move radially in the sockets. In this way, the rotational movement of the cutting length adjustment device can be converted into a translational movement of the guide frame.
[0017] The blade device preferably also has a guide frame that interacts with the guide shaft of the cutting length adjustment device such that a longitudinal movement of the guide frame is generated by rotating the guide shaft.
[0018] The cutting length adjustment device can also have a longitudinal offset display. This can be formed using markings (such as stripes) or numbers and is in particular arranged in the region of the joystick. The longitudinal offset display is preferably designed as a scale, and conclusions about a specific longitudinal offset can be drawn from the position of the joystick at a specific point on the scale.
[0019] Furthermore, the hair cutting device preferably has a coupling spring, wherein the cutting length adjustment device is coupled to the second cutting element by the coupling spring. Preferably, the coupling spring is further configured to transfer the longitudinal offset adjustment from the cutting length adjustment device to the second cutting element or to the second cutting element. In particular, the coupling spring is formed by the tensioning element such that the coupling spring is designed to press the second cutting element against the first cutting element.
[0020] The longitudinal offset is the mutual distance between two reference elements along the longitudinal axis of the hair cutting device or the cutting kit. The longitudinal axis corresponds to the axis that extends from the operator towards the position of cutting hair during the operation of the hair cutting device or the cutting kit. The transverse axis is perpendicular to the longitudinal axis and extends parallel to the cutting edge. The cutting edge is produced by the arrangement of the first cutting element and the second cutting element and corresponds to the edge or line at which the cutting effect caused by the relative movement of the first cutting element and the second cutting element occurs.
[0021] The hair cutting device or the cutting kit preferably has a selector device, which includes a latch plate that is pre-tensioned in the direction of the latching device and can move with the selector slider. In particular, the latch plate engages and disengages with the latching device through a ramp. For this purpose, the latch plate preferably has a spring clip. The end of the latch plate preferably engages in a recess in the idle position. Description of the Drawings
[0022] Figure 1a The hair cutting device is shown in an isometric exploded view.
[0023] Figure 1b Shown in a top view Figure 1a the hair cutting device shown in
[0024] Figure 2a The cutting kit is shown in an isometric view.
[0025] Figure 2b Shown in a top view Figure 2a the cutting kit shown in
[0026] Figure 2c Shown in an isometric view Figure 2a and Figure 2b the cutting kit without the carrying device shown in
[0027] Figure 2d Shown Figure 2c the cutting kit shown in
[0028] Figure 2e The cutting kit shown in Figure 2d is shown from a perspective from below and has a carrier device and no first cutting element.
[0029] Figure 2f The cutting kit shown in Figure 2c is shown in a side cross-sectional view.
[0030] Figure 2g The cutting kits shown in Figure 2d and Figure 2e are shown in a side cross-sectional view.
[0031] Figure 3a The selector switch is shown in an isometric view.
[0032] Figure 3b The selector switch shown in Figure 3a is shown in a side view.
[0033] Figure 3c The selector switch shown in Figure 3a and Figure 3b is shown in a top view.
[0034] Figure 3d The selector switch shown in Figures 3a to 3c is shown from a perspective from below.
[0035] Figure 3e The selector switch shown in Figures 3a to 3d is shown from a perspective from the front.
[0036] Figure 4a The guide shaft is shown from a perspective from the front.
[0037] Figure 4b The guide shaft shown in Figure 4a is shown in a top view.
[0038] Figure 4c The guide shafts shown in Figure 4a and Figure 4b are shown in a cross-sectional view from the front.
[0039] Figure 4d A cross-section through the plug-in cylinder and the guide carrier socket is shown;
[0040] Figure 5a The guide shaft and the adjustment lever shown in Figures 4a to 4c are shown from a perspective from the front.
[0041] Figure 5b The guide shaft and the adjustment lever shown in Figure 5a are shown in a top view.
[0042] Figure 5c Is shown in cross-section from the front Figure 5a and Figure 5b the guide shaft and the adjustment lever shown in
[0043] Figure 6 Shows the latch device and the complementary part of the selector switch
[0044] Figure 7a Shows another latch device and the complementary part of the selector switch
[0045] Figure 7b Shows another latch device and the complementary part of the selector switch
[0046] Figure 7c Shows another latch device and the complementary part of the selector switch
[0047] Figure 8a Shows another cutting kit with an adjustment lever in isometric view
[0048] Figure 8b Shows another cutting kit with two adjustment levers in isometric view
[0049] Figure 9a Is shown in isometric view Figure 2c and Figure 2f the cutting kit with a smaller longitudinal offset shown in
[0050] Figure 9b Is shown in isometric view Figure 9a the cutting kit with a larger longitudinal offset shown in
[0051] Figure 10a Shows the spring clip of the selector device in isometric view, where the selector switch is in the first position
[0052] Figure 10b Shows the spring clip of the selector device in isometric view, where the selector switch is in the second position
[0053] Figure 11a Shows various views of the cutting kit, where the setting lever is in the position for long cutting Figure 11b Shows various views of the cutting kit, where the setting lever is in the position for medium cutting
[0054] Figure 11c Shows various views of the cutting kit, where the adjustment lever is in the position for short cutting
[0055] Figure 12aShows various views of the cutting kit, where the adjustment joystick is in the position for the long cutting position. Figure 12b Shows various views of the cutting kit, where the adjustment joystick is in the position for the medium cutting position.
[0056] Figure 12c Shows various views of the cutting kit, where the adjustment joystick is in the position for the short cutting position.
[0057] List of reference numerals:
[0058] 100 Hair cutting device
[0059] 105 Driving device
[0060] 110 First cutting element
[0061] 112 Second cutting element
[0062] 114 Driver socket
[0063] 120 Guide frame
[0064] 124 Plug-in cylinder
[0065] 130 Guide shaft
[0066] 132 Latching device
[0067] 133 Latching teeth
[0068] 134 Adjustment joystick socket
[0069] 136 Coupling spring socket
[0070] 138 Guide frame socket
[0071] 140 Adjustment joystick
[0072] 141 First driving area
[0073] 142 Second driving area
[0074] 150 Selector device
[0075] 152 Latching plate
[0076] 156 Spring clip
[0077] 160 Selector switch
[0078] 161 Ramp
[0079] 162 Snap rib portion
[0080] 163 Depression
[0081] 164 latch rib
[0082] 166 slider
[0083] 170 carrier device
[0084] 180 coupling spring
[0085] 200 cutting kit
[0086] 250 blade device
[0087] 301 first length adjustment method
[0088] 302 second length adjustment mode
[0089] 401 longitudinal direction
[0090] 402 transverse direction
[0091] 500 - 500 cross - sectional view
[0092] 510 - 510 cross - sectional view
[0093] 520 - 520 cross - sectional view Detailed implementation mode
[0094] Figure 1a The hair cutting device 100 is shown in an equally - spaced exploded view. The hair cutting device 100 has a drive device 105. The drive device 105 generally has an electric motor powered by a battery or via a cable. In addition, the hair cutting device 100 has a blade device 250, which preferably includes a first cutting element 110, a second cutting element 112, a guide frame 120, a carrier device 170 and a coupling spring 180. In addition, a cutting length adjustment device is provided, which is designed to adjust the longitudinal displacement between the first cutting element and the second cutting element. In the form shown here, the cutting length adjustment device has an adjustment lever 140, a selector device 150 with a guide shaft 130 and a selector switch 160. The drive device 105 is used to drive the second cutting element 112. For this purpose, a drive socket 114 is provided on the second cutting element 112, which can be connected to the drive device 105. In this case, the drive socket 114 is designed as a double - wing, and the eccentric rotating pin of the drive device is received between the double - wings. The second cutting element 112 can be moved or driven by the drive device 105 along and against the transverse direction 402 relative to the first cutting element 110. The second cutting element 112 can also be moved by the adjustment lever 140 along and against the longitudinal direction 401 relative to the first cutting element 110.
[0095] Figure 1b Shown in a top viewFigure 1a The hair cutting device 100 shown in
[0096] Figure 2a is in a fully assembled state. The cutting kit 200 is shown in an isometric view. Except for the drive device 105, the cutting device 200 has the same components as the Figure 1a and Figure 1b hair cutting device 100 shown in Figure 1a . Compared with the hair cutting device 100 shown in Figure 1a , the components are shown in an assembled state, i.e., the operating state. The carrier device 170 covers or fixes the second cutting element 112, the coupling spring 180, the guide frame 120, and the guide shaft 130 to the first cutting element 110 (see
[0097] Figure 2b Figure 2a ). The selector switch 160 is exposed and thus easily accessible to the operator. However, at least during operation, the selector switch 160 can also be covered so that unnecessary adjustments or displacements can be prevented. In the area of the drive socket 114, the carrier device 170 has a recess such that the drive device 105 can be coupled to the drive socket 114.
[0098] Figure 2c The cutting kit 200 shown in Figure 2a and Figure 2b without the carrier device 170 is shown in a top view in the first length adjustment mode 301. The selector switch 160 moves against the lateral direction 402 on the guide shaft 130.
[0099] Figure 2d The cutting kit 200 shown in Figure 2c is shown in the second length adjustment mode 302. The selector switch 160 moves against the lateral direction 402 on the guide shaft 130.
[0100] Figure 2e The cutting kit 200 shown in Figure 2d is shown from a lower perspective. It has the carrier device 170 and does not have the first cutting element 112. The guide shaft 130 has a coupling spring socket 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 along or against the longitudinal direction 401 by the guide frame 120. In this way, the second cutting element 112 can also move along or against the longitudinal direction.
[0101] Figure 2f The cutting kit 200 shown in Figure 2cThe cutting kit 200 shown in. The cross-sectional view 500-500 corresponds to Figure 2e the hatching shown in and is marked with the reference numeral 500. The selector device 150 (see Figure 1a ) has a latch device 132 which is arranged on the guide shaft 130. The latch device 132 engages with the selector switch 160. This configuration corresponds to the first length adjustment mode 301 (see Figure 2c ), in which the longitudinal offset between the first cutting element 110 and the second cutting element 112 can be adjusted stepwise.
[0102] Figure 2g so as to also show in Figure 2f the side cross-sectional view 500-500 shown in shows Figure 2d and Figure 2e the cutting kit 200 shown in. The cutting kit 200 is in the second length adjustment mode 302 (see Figure 2d ), that is to say, the selector switch 160 is not engaged with the latch device 132. In the second length adjustment mode 302, the longitudinal offset between the first cutting element 110 and the second cutting element 112 can be adjusted continuously.
[0103] Figure 3a The selector switch 160 is shown in an isometric view. The selector switch 160 has two snap rib-like portions 162, in Figure 3aOnly one of them is visible. The selector switch 160 can also have only one latching rib 162 or more than two latching ribs 162 or no latching ribs 162 at all. The latching rib 162 or the plurality of latching ribs 162 are used to lock the selector switch 160 in a selected position, which corresponds to a length adjustment mode, such as a first length adjustment mode 301 or a second length adjustment mode 302. The latch of the selector switch 160 can in particular be designed with the aid of a carrier device 170. For this purpose, the carrier device 170 can have one or more recesses that match the latching rib 162 or the plurality of latching ribs 162, and the latching rib 162 or the plurality of latching ribs 162 snap into the one or more recesses, thereby locking the positioning of the selector switch 160 on the guide shaft 130. In order to move the selector switch 160 out of the respective positioning again, that is, to move it against or along the transverse direction 402, the operator must first overcome the resistance of the latching rib 162 or the plurality of latching ribs 162. The selector switch 160 also has three latching ribs 164, which are designed to interact with the latching device 132. If the hair cutting device 100 or the cutting kit 200 is in the first length adjustment mode 301, the three latching ribs 164 prevent the guide shaft 130 from rotating continuously. Instead, the three latching ribs 164 ensure that the guide shaft 130 can only rotate step by step, that is, from latching rib 164 to latching rib 164. Therefore, the longitudinal offset of the first cutting element 110 and the second cutting element 112 relative to each other, that is, the longitudinal offset along the longitudinal direction 401, can also only be adjusted step by step. The adjustment accuracy of the longitudinal offset corresponds to the distance between the respective latching ribs 164. In addition, fewer latching ribs 164 can also be provided, such as one latching rib 164 or two latching ribs 164, but more than three latching ribs 164 can also be provided, such as five, ten or fifteen latching ribs 164.
[0104] Figure 3b is shown in a side view Figure 3a the selector switch 160 shown in. The three latching ribs 164 are arranged substantially on a circular part and are thus arranged facing the latching device 132 located on the substantially circular guide shaft 130. Two latching ribs 162 project from the selector switch 160 against the longitudinal direction 401. Other orientations of the latching ribs 162 are also possible, for example, they project from the selector switch 160 along the longitudinal direction 401, or project along or against the transverse direction 402, or project from the upper side of the selector switch 160.
[0105] Figure 3c is shown in a top view Figure 3a and Figure 3b the selector switch 160 shown in. InFigure 3c In this case, both of the snap rib portions 162 are visible. Figure 3d The selector switch 160 shown in Figures 3a to 3c is shown from a lower perspective. In Figure 3d it can be seen that the selector switch 160 here has three additional latch rib portions 164, each of which is arranged opposite one of the three latch rib portions 164 visible in Figure 3a and Figure 3b There is a free space between the opposing latch rib portions 164. Figure 3e The selector switch 160 shown in Figures 3a to 3d is shown from a front perspective. In principle, the latch rib portions 164 are not fixed. Preferably, a large number of latch rib portions 164 are formed on the guide shaft 130 or the selector switch, so that a large number of adjustment levels can be achieved. A smaller number of latch rib portions are provided on the complementary corresponding elements, preferably one to five latch rib portions, but in particular the three latch rib portions shown here. Three is the optimal number in terms of the trade-off between wear, adjustment force, and tactile feedback. Preferably, the latch rib portions of the guide shaft 130 and the selector switch may also each have different geometries, such that for example the selector switch has latch elements that are twice as large as those of the guide shaft. Then finer latch elements can be used to achieve finer levels. However, the geometries of the latch elements should be coordinated such that the latch elements can engage with each other simultaneously.
[0106] Figure 4a The guide shaft 130 is shown from a front perspective. The guide shaft 130 has two adjustment lever sockets 134, each arranged at one side end. The adjustment lever 140 can be received in each of the adjustment lever sockets 134, such that the guide shaft 130 can be rotated by the adjustment lever 140. The guide shaft 130 also has two guide frame sockets 138, and the two plug-in cylinders of the guide frame 120 can be received in the two guide frame sockets in particular. These plug-in cylinders 124 are arranged on one arm of the guide frame 120, and the arm extends in the direction of the guide shaft 130. If the guide shaft 130 rotates, the guide frame 120 and thus the second cutting element 112 are offset along or against the longitudinal direction 401. The guide shaft 130 also has two latching devices 132. The guide shaft 130 has a smooth surface that is adjacent to the latching devices 132 along the transverse direction 402. If the selector switch 160 or its latch rib portions 164 are located above the smooth surface, the longitudinal offset can be continuously adjusted. The smooth surface is substantially as wide as the free space between the latch rib portions 164 visible in Figure 3d
[0107] Figure 4b The guide shaft 130 shown in Figure 4a is shown in a top view. InFigure 4b As can be seen, the two guide rail sockets 138 are each restricted at their ends relative to the longitudinal direction 401. In this way, the guide rail 120 can be safely guided both along and against the longitudinal direction 401.
[0108] Figure 4c Shown in cross-section 510-510 from the front is Figure 4a and Figure 4b the guide shaft 130 shown in. Cross-section 510-510 corresponds to Figure 4b the section line shown in and is labeled with the reference numeral 510. As can be seen, the two adjustment lever sockets 134 each project into the guide shaft 130 relative to the transverse direction 402. In this way, the adjustment lever 140 can be firmly received in the corresponding adjustment lever socket 134.
[0109] Figure 4d A cross-section through the guide rail socket 138 is shown, in which the plug-in cylinder 125 is arranged. The guide rail socket 138 is designed to be radially longer than the plug-in cylinder 125, such that the plug-in cylinder 125 can move radially relative to the axis of the guide shaft 130. When the guide shaft 130 rotates, the plug-in cylinder moves towards or away from the cutting elements 110, 112 (see arrow A) and slides radially in the guide rail socket 138.
[0110] Figure 5a Shown from the front perspective is Figures 4a to 4d the guide shaft 140 and the adjustment lever 130 shown in. The adjustment lever 140 is received at its lower end in the adjustment lever socket 134 shown in the left side view. The adjustment lever 140 also has a first actuation region 141 via which the adjustment lever 140 can be actuated or rotated along the longitudinal direction 401 (i.e., rotated about the axial direction 402). When the adjustment lever 140 is actuated accordingly, the guide shaft 130 also rotates along the longitudinal direction 401 or about the axial direction 402 of the longitudinal axis of the guide shaft.
[0111] Figure 5b Shown in a top view is Figure 5a the guide shaft 130 and the adjustment lever 140 shown in. The adjustment lever 140 also has a second actuation region 142 by means of which the adjustment lever 140 can be actuated against the longitudinal direction 401. When the adjustment lever 140 is actuated accordingly, the guide shaft 130 also rotates against the longitudinal direction 401.
[0112] Figure 5c Shown in cross-section 520-520 from the front is Figure 5a and Figure 5bThe guide shaft 130 and the adjustment lever 140 shown in Figure 4b The cross-sectional line shown in
[0113] Figure 6 The latch device 132 and the complementary part 160 of the selector switch are shown. Figure 6 The part of the selector switch 160 in or on which the latch rib portions 164 are arranged is shown. The latch device 132 has a plurality of latch teeth 133, of which Figure 6 Only two latch teeth 133 are shown in Figure 1a . The latch teeth 133 are designed to be complementary to the latch rib portions 164. If the selector switch 160 engages with the latch device 132, the latch rib portions 164 are respectively arranged between the two latch teeth 133, or the latch teeth 133 are positioned between the two latch rib portions 164, wherein the outer surface of the latch teeth 133 contacts the outer surface of the corresponding latch rib portions 164. The fineness of the stepped adjustment of the longitudinal offset in the first length adjustment mode 301 can be adjusted by the distance between the latch rib portions 164 or the latch teeth 133 from each other. When the distance between the latch rib portions 164 or the latch teeth 133 from each other is small, a fine adjustment of the longitudinal offset can be achieved, while a larger distance correspondingly results in an approximate adjustment. The first length adjustment mode 301 and the second length adjustment mode 302 can also both achieve the stepped adjustment of the longitudinal offset. For this purpose, a selector device 150 (see
[0114] Figure 7a The latch device 132 and the complementary part 160 of the selector switch are shown. The latch device 132 has a plurality of latch teeth 133 which are distributed over the entire circumference of the latch device 132. This enables the guide shaft 130 to rotate completely around its longitudinal axis at least once. Among the latch teeth 133, only two are marked with reference numerals. In contrast, the part of the selector switch 160 shown only has four adjacent latch rib portions 164, of which only two are marked with reference numerals.
[0115] Figure 7b The latch device 132 and the complementary part 160 of the selector switch are shown. Compared with Figure 7a the latch device 132 shown in Figure 7b the latch device 132 shown in
[0116] Figure 7c shows the latch device 132 and the complementary part 160 of the selector switch. The shown part of the selector switch 160 has a plurality of latch ribs 164 or latch teeth 133 distributed around its entire circumference. Similar to Figure 7b the shown latch device 132, the latch device 132 has latch teeth 133 distributed around approximately half of its circumference.
[0117] Figure 8a Another cutting kit 200 with an adjustment lever 140 is shown in an isometric view. Compared with Figures 2a to 2e the shown cutting kit 200, in the cutting kit 200 shown in Figure 8a , the adjustment lever is arranged on the opposite side, that is, along the transverse direction 402 at the distal end of the cutting kit 200, or when viewed along the longitudinal direction 401, it is arranged on the right side of the cutting kit 200. For this purpose, the guide shaft 130 has two opposite adjustment lever sockets 134, as Figures 4a to 4c shown. In this way, the adjustment lever 134 can be arranged on the left or right side of the cutting kit 200 according to the operator's preference. For example, for a right-handed operator, as Figure 8a shown, it is arranged on the right side, or for a left-handed operator, as Figures 2a to 2e shown, it is arranged on the left side.
[0118] Figure 8b Another cutting kit 200 with two adjustment levers 140 is shown in an isometric view. Such a cutting kit can be easily operated by both right-handed and left-handed operators.
[0119] Figure 9a An isometric view shows Figure 2c and Figure 2f the cutting kit 200 shown in
[0120] Figure 9b with a smaller longitudinal offset. The adjustment lever 140 is offset far forward along the longitudinal direction 401. In this way, the guide shaft 130 rotates along the longitudinal direction 401, and the front edges of the first cutting element 110 and the second cutting element 112 are arranged close to each other. Figure 9a An isometric view shows Figure 9a the cutting kit 200 shown in
[0121] Figure 10a and Figure 10bThe latch plate 152 for a selector device is shown, and the selector switch 160 and the latch rib 164 are formed separately in the selector device. In this embodiment, it is possible to switch between stepped and continuous adjustment by engaging the latch rib 164 into the latch device 132 (e.g., between the latch teeth 133 or in a recess formed on the guide shaft 130) or moving it away from the latch device 132. In principle, one latch device 132 is sufficient for the latch plate 152, but multiple latch devices 132 can also be provided on the guide shaft 130, and preferably multiple laterally offset latch flanges 164 are also complementarily provided on the latch plate. Similarly, multiple latch ribs can be arranged one after another on the latch plate. To engage the latch rib 164, the latch plate 152 has a spring clip 156 that is pre-tensioned in the direction of the latch device. The selector switch 160 can be in the latched position and the idling position. In the latched position, the selector switch 160 is not engaged with the latch plate 152. The spring clip 156 of the locking plate engages with the locking device 132 due to the pre-tension, and signals, for example, the stepped length setting of the cutting blade, via the interaction of the latch rib 164 with the locking teeth 133 of the locking device 132. When the selector switch 160 is pushed into the idling position, the spring clip of the latch plate disengages from the latch device 132 and provides a mode for continuous length adjustment. Here, this is achieved in such a way that by moving the selector switch 160, the ramp 161 on the selector switch 160 lifts the end 154 of the spring clip 156 out of engagement with the latch device 132. Then, the end 154 of the spring clip 156 can preferably engage in a recess 163 in the idling position, so that accidental or independent sliding of the selector switch 160 can be avoided.
[0122] Figure 11a , Figure 11b , Figure 11c , Figure 12a , Figure 12b and Figure 12c each show two side views, a top view, and a cross-sectional view of a cutting kit 200 with a latch plate 152. Except for the different designs of the selector switch 160 and the latch plate 152, the cutting kit 200 has the same components as the cutting kits shown in Figure 2a and Figure 2b . In Figure 11a , Figure 11b and Figure 11c , the selector switch is in the latched position such that the spring clip 156 engages in the latch device 132 of the guide shaft 130. In Figure 11a , a long cutting length is set, where the cutting blades are spaced wide apart. In Figure 11b a medium cutting length is set, and in Figure 11c a short cutting length is set. InFigure 11b and Figure 11c In the cross-sections of Figure 11b and Figure 11c , it can be seen that in each case the latch rib portion 164 further skips one latch tooth 133.
[0123] In Figure 12a , Figure 12b and Figure 12c the selector switch is in the idling position, such that the spring clip 156 is lifted out of the latch device 132 of the guide shaft 130. In Figure 12a , a long cutting length is set, where the cutting blades are spaced relatively wide apart. In Figure 12b a medium cutting length is set, and in Figure 12c a short cutting length is set. Since the cutting length is set continuously, the latch rib portion 164 is hereby lifted away from the latch device. Figure 12a In Figure 12a , a long cutting length is set, where the cutting blades are spaced relatively wide apart. In Figure 12b a medium cutting length is set, and in Figure 12c a short cutting length is set. Since the cutting length is set continuously, the latch rib portion 164 is hereby lifted away from the latch device. Figure 12b In Figure 12b a medium cutting length is set, and in Figure 12c a short cutting length is set. Since the cutting length is set continuously, the latch rib portion 164 is hereby lifted away from the latch device. Figure 12c In Figure 12c a short cutting length is set. Since the cutting length is set continuously, the latch rib portion 164 is hereby lifted away from the latch device.
[0124] The latch plate 152 can be combined with any of the previously described embodiments (one or two latch devices, all joystick embodiments, etc.), provided that the engagement and disengagement described in connection with the latch plate 152 can be used in place of the lateral displacement of the latch rib portion 164.
Claims
1. A hair cutting device (100), comprising: Blade assembly (250), said blade assembly having a first cutting element (110) and a second movable cutting element (112), Drive device (200), said drive device driving said blade device; And Cutting length adjustment device (130), said cutting length adjustment device interacting with said second cutting element (112) such that the longitudinal offset between said first cutting element (110) and said second cutting element (112) can be adjusted, Characterized in that, Said hair cutting device (100) further has a selector device (150), by means of 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 said first length adjustment mode (301), the longitudinal offset can be adjusted in a stepped or continuous manner, and in said second length adjustment mode (302), the longitudinal offset can be adjusted step by step.
2. A cutting kit (200) for a hair cutting device, comprising: Blade assembly (250), said blade assembly having a first cutting element (110) and a second movable cutting element (112), and Cutting length adjustment device (130), said cutting length adjustment device interacting with said second cutting element () such that the longitudinal offset between said first cutting element () and said second cutting element () can be adjusted, Characterized in that, Said hair cutting device (200) further has a selector device (150), by means of 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 said first length adjustment mode (301), the longitudinal offset can be adjusted in a stepped or continuous manner, and in said second length adjustment mode (302), the longitudinal offset can be adjusted step by step.
3. The hair cutting device (100) or cutting kit (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 kit (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 a plurality of latching positions, and wherein the latching device (132) engages or disengages in the first length adjustment mode (301) and engages in the second length adjustment mode (302).
5. The hair cutting device (100) or cutting kit (200) according to any one of the preceding claims, wherein the cutting length adjustment device is designed as a guide shaft (130) capable of rotating about an axis.
6. The hair cutting device (100) or cutting kit (200) according to claim 4 or 5, wherein the latching device (132) disengages in the first length adjustment mode (301).
7. The hair cutting device (100) or cutting kit (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 kit (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 kit (200) according to claim 8, wherein the adjustment lever (132) can be connected to the cutting length adjustment device at two different positions.
10. The hair cutting device (100) or cutting kit (200) according to any one of claims 7 to 9, wherein the adjustment lever () is movable in a range of 0° to 120°, preferably in a range of 0° to 90°, particularly preferably in a range of 0° to 70°, especially 62°.
11. The hair cutting device (100) or cutting kit (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 the cutting area, the longitudinal offset decreases, and when the adjustment lever (132) is adjusted in the opposite direction, the longitudinal offset increases.
12. The hair cutting device (100) or cutting kit (200) according to any one of claims 7 to 11, wherein the blade device further includes a guide frame that interacts with the guide shaft of the cutting length adjustment device such that a longitudinal movement of the guide frame is generated by rotating the guide shaft (130).
13. The hair cutting device (100) or cutting kit (200) according to any one of the preceding claims, particularly 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 kit (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 the coupling spring (180).
15. The hair cutting device (100) or cutting kit (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).
16. The hair cutting clip (100) or cutting kit (200) according to any one of the preceding claims, wherein the selector device (150) includes a latch plate (152) that is biased in the direction of the latching device (132) and is movable with the selector switch (160).