Apparatus for sharpening at least one pencil

Abstract

Device for sharpening at least one pencil, comprising a housing means which delimits a housing volume, a sharpener unit which comprises a base body which delimits at least one sharpener channel for a pencil to be sharpened, the sharpener channel defining a sharpener channel axis, and a holding means for releasably holding the sharpener unit on or in the housing means, the holding means having at least one holding means element which can be shifted into a first direction and / or position and into a second direction and / or position, which in the first direction and / or position exerts a holding force acting on the sharpener unit onto the sharpener unit, which in the second direction and / or position does not exert a holding force acting on the sharpener unit onto the sharpener unit, at least one user-side operable actuating element coupled to the at least one holding means element, via which the at least one holding means element can be shifted into the second direction and / or position.

Description

Technical Field

[0001] The present invention relates to a device for sharpening at least one pencil, the device comprising a housing device defining a housing volume and a sharpener unit at least partially, optionally fully, arrangable within or in the housing volume, wherein the sharpener unit includes a base defining at least one sharpening channel for the pencil to be sharpened, the sharpening channel defining a sharpening channel axis. Background Technology

[0002] The corresponding device for sharpening at least one pencil is known from various different embodiments in the prior art, and is generally configured in such a way that the functional components for the actual sharpening process, namely the sharpener unit, are arranged in the housing volume of the housing device, which is why the corresponding device is also often referred to as a "canned sharpener".

[0003] In view of the efforts to make the corresponding equipment more sustainable, new designs are needed that allow for simple and practical replacement of only the sharpening unit, for example, in the event of wear and tear of the sharpening unit, without disposing of the entire equipment.

[0004] To date, there is no satisfactory design principle for the operation of the equipment or the required manufacturing technology in the context of replacing the sharpening unit. Summary of the Invention

[0005] The object of this invention is to provide an improved device for sharpening at least one pencil.

[0006] A first aspect of the invention relates to a device for sharpening at least one pencil. Therefore, the device described herein is generally configured for sharpening at least one pencil.

[0007] The device includes a housing assembly, which may also be simply referred to as the housing. The housing assembly defines a housing volume. The housing assembly may be designed as one or more parts. Thus, the housing assembly may include one or more housing portions or housing walls defining the housing volume. Specifically, the housing assembly may, for example, have one or more bottom walls and one or more side walls that define the housing volume. At least one sharpening unit of the device may be arranged or formed in or within the housing volume; thus, the housing volume may be at least partially occupied by at least one sharpening unit. The housing volume not occupied by at least one sharpening unit and thus free may be configured to accommodate removable material generated during the pencil sharpening process. Thus, the housing volume may be configured to at least partially accommodate at least one sharpening unit and to accommodate removable material or sharpening waste generated during the pencil sharpening process. In this respect, the housing volume may also form receiving spaces for at least partially accommodating at least one sharpening unit and for accommodating material removed or sharpening waste generated during the sharpening process.

[0008] As described above, the housing device may have one or more bottom walls and one or more side walls defining the housing volume. Therefore, the housing device can be configured to open on one side; this configuration can be achieved, for example, by having no top wall (at the top) enclosing the housing volume relative to one or more bottom walls. However, the housing device may include at least one cover member, which is particularly releasable to or connected to the remaining walls in a manner without causing damage or destruction, to cover the open area of ​​the housing device.

[0009] At least one cover member may have at least one plate-like or plate-shaped wall. The at least one cover member may have at least one receiving opening, particularly in the region of the corresponding plate-like or plate-shaped wall, capable of receiving at least one sharpening unit. The at least one receiving opening may be specifically configured to receive at least one sharpening unit in the region of the wall of the sharpening unit, in which at least one insertion opening for a pencil to be inserted into at least one sharpening channel of the sharpening unit is formed.

[0010] In addition to at least one plate-like or plate-shaped wall, at least one cover member may have at least one other sidewall oriented at an angle relative to at least one plate-like or plate-shaped wall. Therefore, in cross-sectional view, at least one cover member may have a basic U-shaped shape. At least one sidewall may have a connection section, for example, a form-locking and / or force-locking function, through which at least one cover member may be form-lockingly and / or force-lockingly but generally (without damage or destructiveness) releasably connected to the remaining walls of the housing assembly.

[0011] The basic geometry of the shell device can be chosen arbitrarily. For example, the shell device can have a basic shape of column or column-like, prism or prism-like, or polygonal, such as triangle, pentagon, etc.

[0012] The device includes at least one sharpener unit. The sharpener unit may, in any case, be at least partially, or if necessary, fully arranged or formed within the housing volume of the housing assembly in the assembled state of the device. The sharpener unit includes a base. The base defines or defines at least one sharpening channel for sharpening a pencil, the at least one sharpening channel defining a sharpening channel axis. The base typically includes one or more walls defining or defining the spatial shape of the base, and one or more walls defining or defining at least one sharpening channel of the sharpener unit. The at least one sharpening channel may be designed to taper gradually from an insertion opening for inserting a pencil therein towards an end opposite the insertion opening. Thus, the at least one sharpening channel may have a tapered or funnel-shaped extension geometry. The sharpening channel axis may be arranged or designed to extend parallel to or relative to the walls of the base that define or define the spatial shape of the base.

[0013] At least one sharpening unit typically has at least one sharpening element, particularly in the form of a blade or cutting edge, assigned to at least one sharpening channel, such that a pencil axially inserted into at least one sharpening channel relative to the axis of at least one sharpening channel can be sharpened or shaped by means of at least one sharpening element by rotating about the axis of at least one sharpening channel. As described above, the sharpening waste generated during the corresponding sharpening process can be contained within the housing volume of the housing device.

[0014] As can be seen from the above description, the device is typically configured as a can sharpener, but can also be designed as a "dual or multi-sharpening device". In the case of a dual or multi-sharpening device, the device may include multiple sharpening units, which, as described above, may be arranged or formed within the housing volume of the housing device. The sharpening units may differ, for example, in that they can sharpen different pencils, i.e., particularly pencils of different sizes. Specifically, the sharpening units may differ, for example, in their geometric design, i.e., conical or funnel-shaped extensions, corresponding pointed channels and / or insertion openings, and / or one or more parameters affecting the sharpening characteristics of the respective sharpening elements, i.e., the arrangement of the sharpening elements, polishing, materials, etc.

[0015] As can be seen from the above explanation, the device can also be simply described as a sharpener, for example, for sharpening drawing, writing, or sketching pencils. In this case, the sharpener unit can have at least one sharpening element, particularly a knife-shaped or blade-like sharpening element, which is arranged or designed on a base and configured for sharpening drawing, writing, or sketching pencils. The corresponding tip element can be made of metal, which can be polished if desired, particularly steel. Alternatively, the device can be used, for example, to sharpen cosmetic pencils, such as eyeliner or lipstick pencils. In this case, the sharpener unit can have at least one sharpening element, particularly a knife-shaped or blade-like sharpening element, which is arranged or designed on a base and configured for sharpening cosmetic pencils. The corresponding tip element can be made of metal, which can be polished if desired, particularly steel, or of plastic, particularly thermoplastic.

[0016] The device also includes a retaining device for releasably retaining the sharpener unit (without damage or destruction). The retaining device is configured to releasably retain the sharpener unit on or within the housing assembly. Specifically, the retaining device is configured to releasably (without damage or destruction) retain the sharpener unit on or within at least one cover member of the housing assembly. Therefore, the sharpener unit, releasably retained by the retaining device, can be released from the housing assembly, particularly the cover member, and thus removed, for example, for replacement, cleaning, or other purposes. If the retaining device is configured to releasably retain the sharpener unit (without damage or destruction) on or within at least one cover member of the housing assembly, the sharpener unit can be released or removed when at least one cover member is separated from the remaining wall of the housing assembly. Similarly, the sharpener unit or another sharpener unit can be (re-)assembled onto or retained within the housing assembly or at least one cover member after a corresponding release or removal, and held by the retaining device. Therefore, by removing the retention provided by the retaining device, the sharpener unit can be released or detached from the housing device, and by generating the retention provided by the retaining device, one or the (clean) sharpener unit can be assembled or reassembled onto or into the housing device.

[0017] The retaining device is formed by or has at least the components described below:

[0018] The retaining device has at least one retaining element. At least one retaining element is movable to a first directional and / or position, which may also be referred to as a retaining position, and a second directional and / or position, which may also be referred to as a releasing position, wherein in the first directional and / or position the retaining element applies a retaining force acting on the sharpening unit specifically arranged in the housing volume, and in the second directional and / or position no retaining force acting on the sharpening unit specifically arranged in the housing volume. Therefore, the retaining force acting on the sharpening unit in the first directional and / or position can securely arrange the sharpening unit on or within the housing device; thus, the retaining force acting on the sharpening unit in the first directional and / or position prevents the possibility of the sharpening unit being undesirably removed or released from the housing device. Therefore, when no retaining force or a significantly reduced retaining force is applied or will be applied to the sharpening unit, the sharpening unit in the second directional and / or position can be released from and optionally removed from the housing device.

[0019] In order to enable the holding device to be transferred to a first and / or second direction and / or position, at least one holding device element is typically at least partially, and possibly completely, supported pivotally or movably in at least one degree of freedom of motion (as will be seen below, particularly bending or pivoting degrees of freedom), which will be discussed in more detail below. To pivot or move it to the second direction and / or position, at least one holding device element, i.e., at least one functional section of at least one holding device element, as explained in more detail below, is typically removed from the base of the sharpener unit. As at least one holding device element moves to the second direction and / or position, the distance between at least one holding device element, i.e., particularly the functional section of at least one holding device element, and the base of the sharpener unit increases. Therefore, mechanical contact may not exist between at least one holding device element and the functional section of the base of the sharpener unit during the transfer process, but at least when the functional section of at least one holding device element is transferred to the second direction and / or position. When at least one retaining element is moved to the second direction and / or position, the base of the sharpener unit generally does not move; therefore, when the at least one retaining element is moved to the second direction and / or position, no force is applied to the base of the sharpener unit via the at least one retaining element, such that the sharpener unit is or remains unforced with respect to the force applied to the sharpener unit via the at least one retaining element or the action section of the at least one retaining element when the at least one retaining element is moved to the second direction and / or position.

[0020] The retaining device typically also has at least one user-operable actuating element coupled to at least one retaining device element, via which the at least one retaining device element can be moved to a second orientation and / or position.

[0021] The at least one actuating element may, for example, be designed as an actuating section of at least one retaining device element, which is operated by the user of the device to move at least one retaining device element, particularly from a first orientation and / or position generally indicated as a basic orientation and / or position, into a second positioning and / or position. The at least one actuating element may be designed as an actuating section of at least one retaining device element that differs from other sections of at least one retaining device element in terms of different spatial extent and / or spatial shape. Alternatively or additionally, the at least one actuating element may differ from other sections of the at least one retaining device element due to different materials and / or different material structures.

[0022] At this point, it should be noted that the retaining device, like other components of the equipment, can be formed of thermoplastic materials, especially injection-moldable thermoplastic materials.

[0023] Therefore, since the retaining device is formed by at least one retaining device element in a minimal configuration, the device described herein contains a practical, reliable and relatively easy-to-implement principle for releasable retention and therefore interchangeable arrangement of at least one sharpening unit on or within the housing assembly, which can be operated in a simple and intuitive manner due to the special actuating elements.

[0024] The holding force that can be applied to the sharpener unit via at least one holding device element transferred to the first direction and / or position can have one or more component forces or directions of force action. The holding force that can be applied to the sharpener unit via at least one holding device element transferred to the first direction and / or position advantageously has at least one component force acting in a direction along at least one sharpening channel axis. In this way, the sharpening process forces acting on the sharpener unit during the sharpening process can be counteracted; these sharpening process forces are generally forces pointing in a direction toward at least one sharpening channel axis. Because the holding force counteracts the corresponding sharpening process forces, the sharpener unit cannot be moved out of or (further) into the housing volume of the housing assembly by the sharpening process forces generated or acting during the sharpening process.

[0025] Depending on the specific geometry of at least one retaining element, the retaining force applied to the sharpener unit by the at least one retaining element in the first direction and / or position may additionally have at least one component oriented at an angle to, and particularly right-angled, the axis of at least one sharpening channel. In this way, if desired, the retention of the sharpener unit on or within the housing assembly by the at least one retaining element shifted to the first direction and / or position can be improved.

[0026] In particular, the transfer force required to move at least one holding device element from a first direction and / or position to a second direction and / or position can have a force component or force direction different from the force component of the holding force acting in the direction of at least one tipping channel axis. The transfer force required to move at least one holding device element to the second direction and / or position can specifically, for example, have a component or force direction pointing at an angle to, in particular, a right angle to, the axis of at least one tipping channel. By arranging and constructing at least one holding device element such that the holding force or its corresponding component acting on the tipping unit in the first direction and / or position is different from the transfer force or its corresponding component required to move at least one holding device element to the second direction and / or position, the practicality and operability of the device are further improved because undesirable removal or release of the tipping unit is essentially eliminated.

[0027] Essentially, independent of the corresponding force component or force direction in the first direction and / or position, at least one retaining device element can interact with the base of the sharpener unit in a form-locking manner in the first direction and / or position. In the first direction and / or position of at least one retaining device element, a form-locking can thus be provided, by which a retaining force is applied to or will be applied to the sharpener unit. As described above, the base of the sharpener unit typically includes one or more walls that define or define the spatial shape or external shape of the base of the sharpener unit, and one or more walls that define or define at least one sharpening channel of the sharpener unit; thus, the corresponding walls can be exposed outer walls and / or inner walls arranged or formed within the corresponding exposed outer walls. Therefore, the form-locking interaction should be understood in particular as at least one retaining device element acting in a form-locking manner on at least one corresponding wall of the base of the sharpening unit, particularly through at least one acting segment of the form-locking action (which has been substantially shown above), and at least one corresponding wall of the base of the sharpening unit being form-locked and / or surrounding at least one corresponding wall of the base of the sharpening unit in a form-locking manner. In an exemplary configuration, at least one retaining device element, i.e., particularly its acting segment, acts on, surrounds, or is counter-locked against a wall of the base of the sharpening unit facing the tapered free end of at least one sharpening channel (the corresponding wall can be considered as the end wall of the base of the sharpening unit). The described possibility is advantageously given in such a way that the sharpening process force acting in the direction of the axis of at least one sharpening channel is absorbed in the first direction and / or position of at least one retaining device element.

[0028] At least one retaining device element may have a base section and at least one actuating section arranged or formed thereon as already indicated. The base section typically includes one or more connection points through which at least one retaining device element is connected to the housing device. At least one actuating section may be configured to interact with the base shape of the sharpener unit in a first direction and / or position. Thus, at least one actuating section can be designed to have a shape or profile that interacts with the base shape of the sharpener unit in a first direction and / or position. Therefore, at least one actuating section can function in a form-locking manner and can therefore also optionally be referred to or considered as a form-locking section.

[0029] The at least one functional section may be specifically formed by, for example, recesses and / or protrusions, or include recesses and / or protrusions. The specific geometry of the corresponding recess or protrusion (i.e., typically at least one functional section) is generally selected based on the geometry of the corresponding wall of the base of the sharpener unit, and at least one functional section of at least one retaining device element in a first direction and / or position interacts with this configuration in a form-locking manner. Therefore, at least one functional section typically has a different cross-sectional geometry than the base section of at least one retaining device element, and is thus able to be defined or distinguished from the base section.

[0030] Regarding its orientation, the base section may extend (substantially) parallel to a horizontal or vertical spatial axis in a first direction and / or position of at least one retaining device element. Specifically, in the first direction and / or position of at least one retaining device element, the base section may extend (substantially) parallel to the fundamental plane of the sharpening unit; the fundamental plane of the sharpening unit can be understood as a plane opposite to the plane receiving at least one sharpening element.

[0031] In this respect, it should generally be added that the base of the sharpening unit can be configured such that at least one sharpening channel axis is not parallel but inclined at a certain angle relative to the base plane of the sharpening unit. Through the corresponding inclined arrangement of at least one sharpening channel axis, the corresponding sharpening process force can be better introduced into and absorbed by at least one holding device element that has been transferred to the first direction and / or position. Therefore, an acute angle can exist between the base section of the at least one holding device element transferred to the first direction and / or position and the at least one sharpening channel axis; specifically, the corresponding angle can be, for example, in the range of 0.5° to 45°, further particularly in the range of 0.5° to 30°, further particularly in the range of 0.5° to 15°, further particularly in the range of 0.5° to 10°, and further particularly in the range of 0.5° to 5°.

[0032] At least one functional section may protrude from the base section at an angle, particularly a right angle, particularly in the direction of at least one tapered channel axis, particularly in the region of the free end of the base section. Thus, at least one functional section may generally be designed as a portion protruding from the base section, particularly in the region of its free end.

[0033] The actuating element can be arranged or formed on the base section or the operating section, particularly in the region at the free end. Arrangement in the base section, particularly in the region at the free end of the operating section, allows the user to readily apply the force required to transfer at least one retaining element to a second direction and / or position.

[0034] Based on the above, it can generally be concluded that at least one retaining device element may have at least one free end; the construction of at least one retaining device element with a free end can bring advantages in terms of manufacturing technology, for example, because at least one retaining device element can be more easily removed from the mold.

[0035] As noted above, at least one retaining device element is pivotally or bendably supported with at least one degree of bending or pivoting freedom, wherein the at least one retaining device element can be transferred to a first direction and / or position and / or a second direction and / or position by pivoting and moving in at least one degree of bending or pivoting freedom. The at least one retaining device element is generally an axis oriented at an angle relative to at least one tapered channel axis about the bending or pivoting axis on which it is pivotally or movably supported in at least one degree of bending or pivoting freedom, i.e., particularly (substantially) perpendicular to the at least one tapered channel axis. The pivoting axis may in particular be parallel to the bottom surface of the housing assembly, especially the bottom surface of the so-called plate-like or plate-shaped wall of at least one cover member.

[0036] Starting with the construction of at least one retaining device element movably supported with corresponding degrees of freedom of bending or pivoting motion, two embodiments can be conceived in particular and therefore non-exclusively:

[0037] In a first exemplary embodiment, at least one retaining element may be designed as a bending or pivoting lever, wherein it may be bendably or pivotally arranged or designed on the wall of the housing device in an end region, particularly on at least one cover member or an adapter device that can be connected to or attached to the at least one cover member. In this embodiment, the connection of at least one retaining element to the housing device, i.e., particularly to at least one cover member or a corresponding adapter device, is generally made via an end of the base section away from at least one actuating section. Therefore, one or more connection points may be present in the region of that end of the base section, via which the base section is connected to the housing device, i.e., particularly to at least one cover member or a corresponding adapter device. The corresponding connection points may also define a bending or pivoting axis about which at least one retaining element may bend or pivot. The corresponding connection may be achieved, for example, through an integral design of the base section and the housing device, particularly at least one cover member or a corresponding adapter device.

[0038] In a second exemplary embodiment, at least one retaining element may be designed as a pivot plate or rocker arm, wherein the retaining element is bendably or pivotally arranged or designed on the wall of the housing device in a region spaced apart from the free end. In this embodiment, the connection of at least one retaining element to the housing device, i.e., particularly to at least one cover member, is generally made via a region of the base section located between the two ends of at least one retaining element. In this region of the base section, which may be arranged or formed centrally relative to the longitudinal extent of the base section, there may be one or more connection points through which the base section is connected to the housing device, i.e., particularly to at least one cover member. The corresponding connection points may also define a pivot axis about which at least one retaining element may bend or pivot. The corresponding connection may be achieved, for example, through an integral design of the base section and the housing device, i.e., particularly at least one cover member.

[0039] In all embodiments, the retaining device may have at least one retaining wall that forms a contact or stop surface for the substrate of the sharpener unit, the substrate of which is (as intended) inserted into a receiving space provided for this purpose by the housing device, i.e., in particular the cover member. If the retaining device has multiple retaining walls, these retaining walls may, as intended, at least partially surround the substrate of the sharpener unit inserted into the receiving portion in a cage-like or cage-like manner, such that the substrate of the sharpener unit can contact multiple contact or stop surfaces when it is as intended inserted into the receiving volume, and thus can be supported in multiple spatial directions. The corresponding retaining walls are generally non-pivotable and therefore represent different functional components of the retaining device due to their contact or stop function, particularly compared to at least one retaining device element.

[0040] Different implementations are conceivable regarding the arrangement and orientation of the at least one retaining wall. For example, the at least one retaining wall may extend in a main extending plane (substantially) parallel to a horizontal or vertical spatial axis. In particular, the at least one retaining wall may extend in a main extending plane (substantially) parallel to the bottom plane of the sharpener unit; as mentioned above, the basic plane of the sharpener unit can be understood as the plane of the base of the sharpener unit, which is opposite to the plane receiving at least one sharpening element. Alternatively or additionally, the at least one retaining wall or at least one additional retaining wall may be arranged or formed to extend along a wall of the base, which extends at an angle, particularly a right angle, to the axis of at least one sharpening channel. The corresponding retaining wall can serve as a support wall against the forces of the corresponding sharpening process, and may optionally be referred to or considered as such.

[0041] In a configuration with multiple retaining walls, at least one first retaining wall may be provided, which is arranged or designed to extend along the wall of the base of the sharpener unit, extending (substantially) parallel to the axis of at least one sharpening channel. At least one second retaining wall may also be provided, which is arranged or designed to extend along the wall of the base of the sharpener unit, extending at an angle, particularly a right angle, to the axis of at least one sharpening channel. The aforementioned cage-like or cage-shaped configuration can be achieved in this manner.

[0042] Various variations can be conceived regarding the assembly or disassembly direction of the sharpener unit, which will be briefly explained below. As described, when the retaining device element is moved to a second direction and / or position, and especially when at least one retaining device element is arranged or formed on at least one cover member, the disassembly of the sharpener unit is generally easy after at least one cover member has been pre-released from the remaining wall of the housing assembly.

[0043] As described above, at least one sharpening channel axis can have a tapered or funnel-shaped extension geometry. In particular, at least one sharpening channel can taper gradually in a tapered or funnel shape from the insertion opening for the pencil toward an end opposite to the insertion opening.

[0044] The sharpener unit, when transferred to the holding device element in a second direction and / or position, can move from the housing volume of the housing device in the direction of the tapered or funnel-shaped tapering end of at least one sharpening channel or in the opposite direction. Therefore, the holding device and thus the device in general can be configured such that the disassembly direction of the sharpener unit is towards the tapered or funnel-shaped tapering end of at least one sharpening channel; in this variation, the assembly direction of the sharpener unit is in the opposite direction. Alternatively, the holding device and thus the device in general is configured such that the assembly direction of the sharpener unit is towards the tapered or funnel-shaped tapering end of at least one sharpening channel; in this variation, the disassembly direction of the sharpener unit is in the opposite direction. These different assembly and disassembly possibilities or directions mean that the holding device can be integrated into housing devices with different configurations, because the assembly or disassembly direction of the sharpener unit can be adapted or selected accordingly.

[0045] A second aspect of the invention relates to a retaining device for releasably retaining a sharpening unit on or within a housing assembly of a device according to a first aspect of the invention, particularly on or within a cover member of the respective housing assembly. The retaining device comprises at least: at least one retaining device element movable to a first and / or second directional and / or position, wherein in the first directional and / or position the retaining device element applies a retaining force acting on the sharpening unit specifically arranged in the housing volume to the sharpening unit, and in the second directional and / or position the retaining device element does not apply a retaining force acting on the sharpening unit specifically arranged in the housing volume to the sharpening unit; and at least one user-operable actuating element coupled to at least one retaining device element, via which the at least one retaining device element is movable to the second directional and / or position.

[0046] All embodiments relating to the device according to the first aspect of the invention are similarly applicable to the holding device according to the second aspect of the invention. Attached Figure Description

[0047] The invention will now be explained again with reference to the exemplary embodiments shown in the accompanying drawings. In the drawings:

[0048] Figure 1-4 A schematic diagram of a device for sharpening at least one pencil according to a first exemplary embodiment is shown;

[0049] Figure 5-9 A schematic diagram of a device for sharpening at least one pencil according to a second embodiment is shown; and

[0050] Figure 10-13 A schematic diagram of a device for sharpening at least one pencil, according to a third exemplary embodiment, is shown. Detailed Implementation

[0051] Figure 1-4 A schematic diagram of a device 10 for sharpening at least one pencil, according to an exemplary embodiment, is shown, wherein... Figure 1 A perspective view of the device 10 is shown, in which the cover component 24 is removed or detached from the remaining wall of the housing component 20 of the device 10. Figure 2 A perspective view of the cover component 24 is shown and Figure 3 , 4 Both show cross-sectional views of the cover component 24. Therefore, Figure 1-4 The device 10 shown is typically configured to sharpen at least one pencil.

[0052] Device 10 includes a housing assembly 20, which may also be simply referred to as the housing, defining a housing volume 21. In an exemplary embodiment, the housing assembly 20 includes, for example, a multi-component design and thus includes multiple housing components or walls defining the housing volume 21. Specifically, the housing assembly 20 in the exemplary embodiment includes a base portion forming a bottom wall 22, side portions forming multiple side walls 23, and a volume defined by the base portion and the side portions in the assembled state of device 10, for example, a cover member 24 closed on the top side by a form-locking and / or force-locking engagement. The cover member 24 may be designed with receiving openings 24.1 and a receiving volume capable of accommodating the sharpener unit 30. The size and shape of the receiving openings 24.1 are selected such that they allow insertion and removal of the sharpener unit 30 of device 10.

[0053] As indicated, the configuration of the housing device 20 shown is exemplary; the housing device 20 can also be configured differently in terms of geometry and structure.

[0054] As can also be seen from the figure, in the assembled state where the cover component 24 of the device 10 is appropriately connected to other walls 22, 23 of the housing device 20, for example, through a corresponding connecting section that achieves the aforementioned plug-in connection, the aforementioned sharpener unit 30 can be arranged or formed in or within the housing volume 21; therefore, in the assembled state of the device 10, the housing volume 21 is at least partially occupied by the sharpener unit 30. The housing volume 21, which is not occupied by the sharpener unit 30 and is therefore free, is configured to accommodate the material removed during pencil sharpening. Thus, the housing volume 21 is configured to at least partially accommodate the sharpener unit 30 and to accommodate the removed material or sharpening waste generated during the pencil sharpening process. In this respect, the housing volume 21 can also form a accommodating space for accommodating the sharpener unit 30 and for accommodating the removed material or sharpening waste generated during the sharpening process.

[0055] By way of example only, in an exemplary embodiment, the sharpener unit 30, configured as a dual-sharpening device, includes a base 31 that defines or defines two sharpening channels SK, each sharpening channel SK defining a sharpening channel axis A. The spatial shape of the base 31 is generally defined or defined by one or more walls. Similarly, the sharpening channels SK are defined or defined by one or more walls. It can be seen that the sharpening channels SK are designed to... Figure 1 The insertion opening 32 for the pencil to be inserted into the corresponding sharpening channel SK, visible in the image, tapers tapering towards the end opposite to the insertion opening. Therefore, the sharpening channel SK has a tapered or funnel-shaped geometry. The sharpening channel axis A can be arranged or designed to extend parallel to or relative to the wall of the base 31, which defines or defines the spatial shape of the base 31.

[0056] The sharpener unit 30 has corresponding sharpening elements 33, particularly blade-shaped or knife-edge-shaped, assigned to corresponding sharpening channels SK, such that a pencil axially inserted into the corresponding sharpening channel SK relative to the axis A of the corresponding sharpening channel can be sharpened or shaped by means of the corresponding sharpening element 33 by rotating about the axis A of the sharpening channel or about its longitudinal axis. As described above, the sharpening waste generated during the corresponding sharpening process can be contained in the housing volume 21 of the housing device 20.

[0057] The device 10, also known as a sharpener, can be used, for example, to sharpen drawing, writing, or sketching pencils, or to sharpen cosmetic pencils, such as eyeliner or lipstick pencils. Depending on the specific application, the geometry and / or material construction of the sharpener unit 30 can vary.

[0058] The device 10 also includes a retaining device 40, which is configured to releasably retain the sharpener unit 30 (without damage or destruction) on or within the housing device 20. Specifically, the retaining device 40 in the exemplary embodiment shown in the figures is designed to releasably retain the sharpener unit 30 (without damage or destruction) on the cover member 24. Therefore, if necessary, the sharpener unit 30, which is releasably held on the housing device 20, particularly the cover 24, by the retaining device 40, can be released from the housing device 20, particularly the cover 24, for example, for replacement, cleaning, or other purposes, especially when the cover member 24 is released from the remaining walls of the housing device 20, for example, as Figure 2 As shown. Similarly, the same or another sharpener unit 30 can be (re)inserted into the cover portion 24 after a corresponding release, and can be held by the retaining device 40. Thus, by removing the retention provided by the retaining device 40, the sharpener unit 30 can be released or removed or detached from the cover portion 24, and by creating the retention provided by the retaining device 40, one or more sharpener units 30 can be inserted or assembled or reassembled, if the sharpener unit is cleaned if necessary.

[0059] The retaining device 40 has at least one retaining device element 41. The retaining device 41 can be transferred to the retaining device to apply the retaining force acting on the tipping unit 30 to the tipping unit 30. Figure 3 The first direction and / or position neutralization and holding device do not apply the holding force acting on the tipping unit 30 to the tipping unit 30. Figure 4The second direction and / or position, as shown by example and also referred to as the release position, is described. Therefore, the retaining force acting on the tipping unit 30 in the first direction and / or position is capable of binding the tipping unit 30 to or within the cover member 24; thus, the retaining force acting on the tipping unit 30 in the first direction and / or position prevents the tipping unit 30 from undesirably releasing or falling from the cover member 24 and therefore from the housing device 20. Therefore, when no retaining force is applied to the tipping unit 30 or at least a significantly reduced retaining force is applied, the tipping unit 30 can be removed or released from the cover member 24 in the second direction and / or position of the retaining device element 41.

[0060] In order to enable the holding device element 41 to be moved to a first and / or second orientation and / or position, such as from Figure 3 , Figure 4 As can be seen from this, the retaining device element is at least partially pivotally or movably supported in at least one degree of motion freedom, in which the degree of motion freedom is... Figure 3 The degrees of freedom of bending or pivoting motion, for example, around a bending or pivoting axis B, are indicated by the double arrow P1. Figure 3 , Figure 4 As can be seen, the retaining device element 41 moves at least partially away from the base 31 of the sharpener unit 30 in order to pivot or move it to a second direction and / or position. When the retaining device element 41 moves or moves to the second direction and / or position, the distance between the retaining device element 41 (i.e., particularly the actuating section 42 of the retaining device element 41, explained in more detail below) and the base 31 of the sharpener unit 30 increases. Therefore, mechanical contact may not exist between the actuating section 42 and the base 31 of the sharpener unit 30 during the transfer process, but at least when the actuating section 42 of the retaining device element 41 is transferred to the second direction and / or position. When the holding device element 41 is moved to the second direction and / or position, the base 31 of the tipping unit 30 does not move; when the holding device element 41 is moved to the second direction and / or position, therefore no force is applied to the base 31 of the tipping unit 30 via the holding device element 41, so that the tipping unit 30 is (substantially) unforced with respect to the force applied to the tipping unit 30 via the holding device element 41 when the holding device element 41 is moved to the second direction and / or position.

[0061] The retaining device 40 also has an actuating element 43, which is coupled to the retaining device element 41 and can be actuated by the user, via which the retaining device element 41 can be moved to a second direction and / or position.

[0062] As can be seen, the actuating element 43 can be designed, for example, as an actuating section of the retaining device element 41, which is manipulated by the user of the device 10 to move the retaining device element 41, particularly from a first orientation and / or position generally indicated as a basic orientation and / or position, into a second positioning and / or position. The actuating element 43 can be designed as an actuating section of the retaining device element 41, as in... Figure 5-9 As exemplarily shown in the exemplary embodiments, the actuation section may be distinguishable, for example, by a different spatial extent and / or spatial shape from the remaining sections of the retaining device element 41, if necessary. Alternatively or additionally, the actuation element 43 may differ from the other sections of the retaining device element 41 due to different materials and / or different material structures.

[0063] Since the holding device 40 is formed in a minimal configuration by only a (single) holding device element 41, the device 10 contains a practical, reliable and relatively easy-to-implement principle for releasable holding and therefore interchangeable arrangement of the sharpener unit 30 on or within the housing device 20 as needed, which can be operated in a simple and intuitive manner due to the special actuating element 43.

[0064] The holding force that can be applied to the sharpening unit 30 via the holding device element 41, which is transferred to the first direction and / or position, can have one or more component forces or directions of force application. The holding force that can be applied to the sharpening unit 30 via the holding device element 41, which is transferred to the first direction and / or position, advantageously has at least one component force acting in the direction along the illustrated sharpening channel axis A. Figure 4 The component force K is shown as an example. In this way, the sharpening process forces F acting on the sharpener unit 30 during the sharpening process can be counteracted; these sharpening process forces F are generally forces pointing in the direction of the corresponding sharpening channel axis A. Since the holding force counteracts the corresponding sharpening process forces F, i.e., oriented in the opposite direction, the sharpener unit 30 cannot be moved out of the housing volume 21 or (further) into the housing volume of the housing device 20 by the sharpening process forces F acting during the sharpening process.

[0065] Depending on the specific geometric design of the holding device element 41, the holding force applied to the sharpener unit 30 by the holding device element 41 in the first direction and / or position may additionally have at least one component force oriented at an angle to, particularly a right angle to, the sharpening channel axis A. In this way, if desired, the holding of the sharpener unit 30 achieved by shifting to the holding device element 41 in the first direction and / or position can be improved.

[0066] In an exemplary embodiment, as can be seen from the double arrow P1, the transfer force required to move the holding device element 41, particularly from a first direction and / or position, to a second direction and / or position, has a force component or force direction different from the force component of the holding force acting in the direction of the tipping channel axis A. The transfer force required to move the holding device element 41 to the second direction and / or position may specifically have a component force or force direction pointing at an angle to, particularly a right angle, to, the tipping channel axis A. By arranging and constructing the holding device element 41 such that the holding force or its corresponding component acting on the tipping unit 30 in the first direction and / or position is different from the transfer force or its corresponding component required to move the holding device element 41 to the second direction and / or position, the practicality and operability of the device 10 are further improved because undesirable removal or release of the holding of the tipping unit 30 is substantially eliminated.

[0067] based on Figure 3 As can be seen, the retaining device element 41 interacts with the base 31 of the sharpener unit 30 in a form-locking manner in a first direction and / or position. Therefore, in this embodiment, a form-locking is provided in the first direction and / or position of the retaining device element 41, by which a retaining force is applied to or will be applied to the sharpener unit 30. As described above, the base 31 of the sharpener unit 30 typically includes one or more walls that define or define its spatial or external shape, and one or more walls that define or define the sharpening channel SK; thus, the corresponding walls can be exposed outer walls and / or arrangements of the base 31 or inner walls formed within the corresponding exposed outer walls. The form-locking interaction should be understood in particular as the retaining device element 41 acting in a form-locking manner on at least one corresponding wall of the base 31, particularly through the action section 42 of the form-locking action, at least one corresponding wall of the base 31 being form-locked and / or and / or surrounding at least one corresponding wall of the base 31 in a form-locking manner.

[0068] exist Figure 3 In this configuration, the working section 42 of the holding device element 41 surrounds the wall of the base 31 of the sharpener unit 30, which faces the tapered free end of the sharpening channel SK; the corresponding wall can be considered as the end wall of the base 31. The described possibility is advantageously provided in such a way that, in the first direction and / or position of the holding device element 41, the sharpening process force F acting in the direction of the sharpening channel axis A is absorbed. Figure 3 In this case, the corresponding walls of the substrate 31 are surrounded, for example, on the outer and inner sides, by the functional sections 42 of the retaining device element 41.

[0069] In contrast, according to Figure 5In an exemplary embodiment, the corresponding wall of the base 31 of the sharpener unit 30 is surrounded only on the outer side by the action section 42 of the holding device element 41; the corresponding sharpening process force F can also be absorbed in this way.

[0070] Therefore, the action section 42 is always configured to interact with the base 31 of the tipping unit 30 in a shape-locking manner in the first direction and / or position. Thus, the action section 42 is geometrically designed to have a shape or profile that interacts with the base 31 of the tipping unit 30 in a shape-locking manner in the first direction and / or position, and can therefore also be referred to or considered as a shape-locking section.

[0071] from Figure 3 , Figure 4 It can also be seen that the retaining device element 41 may have a base section 44 on which an active section 42 is arranged or formed. The base section 44 includes one or more connection points through which the retaining device element 41 is connected to the housing device 20, i.e., to the cover member 24 in the exemplary embodiment.

[0072] from Figure 3 , Figure 4 It can also be seen that the actuating section 42 may be specifically formed by, for example, recesses and / or protrusions, or include recesses and / or protrusions. The specific geometry of the corresponding recess or protrusion (i.e., typically the actuating section 42) is generally selected based on the geometry of the corresponding wall of the base 31 of the sharpener unit 30, with the actuating section 42 of the retaining device element 41 in the first direction and / or position interacting with this configuration in a form-locking manner. Therefore, the actuating section 42 typically has a different cross-sectional geometry than the base section 44, and is thus delineated or distinguishable from the base section 44.

[0073] Regarding its orientation, the base section 44 may extend (substantially) parallel to a horizontal or vertical spatial axis in a first direction and / or position of the retaining device element 41. Specifically, in the first direction and / or position of the retaining device element 41, the base section 44 may extend (substantially) parallel to the basic plane of the base 31 of the sharpener unit 30; from Figure 3 , 4 As can be seen from this, the basic plane of the base 31 of the sharpener unit 30 can be understood as the plane opposite to the plane receiving the sharpening element 33.

[0074] In an exemplary embodiment, the tipping channel axis A is inclined at a certain angle α relative to the base plane of the tipping unit 30. This inclined arrangement of the tipping channel axis A allows the corresponding tipping process force to be better introduced into and absorbed by at least one holding device element 41 that has been transferred to the first direction and / or position. Therefore, an acute angle may exist between the base section 44 of the holding device element 41 transferred to the first direction and / or position and the tipping channel axis A; specifically, the corresponding angle may be, for example, in the range between 0.5° and 45°, further particularly in the range between 0.5° and 30°, further particularly in the range between 0.5° and 15°, further particularly in the range between 0.5° and 10°, and further particularly in the range between 0.5° and 5°.

[0075] Regarding the actuating section 42, it should also be added that, as shown in the figure, it can protrude from the base section 44 at a certain angle, particularly at a right angle. In an exemplary embodiment, the actuating section 43 is designed as an extension of the base section 44 in the direction of holding the free end of the device element 41 downstream of the actuating section 42. Therefore, according to Figure 1-4 The first exemplary embodiment has shown that the functional segment 42 can generally be designed as a segment protruding from the base segment 44, particularly in the region of its free end.

[0076] This can also be seen from Figure 5-9 As can be seen in the second exemplary embodiment shown, the actuating section 42 protrudes at an angle, specifically a right angle, from the free end of the base section 44 along the direction of the tapered channel axis A. In this exemplary embodiment, the actuating element 43 protrudes at an angle from the actuating section 42 in the region of its free end.

[0077] Based on the first exemplary embodiment, it can be seen that the retaining device 40 may include one or more retaining walls 45, which form abutting or stopping surfaces for the (intended) insertion of the tipping unit 30 into the respective receiving volume of the cover member 24. If the retaining device 40 has multiple retaining walls 45, these retaining walls may, as intended, at least partially surround the base of the tipping unit 30 inserted into the respective receiving volume of the cover member 24 in a cage-like or cage-like manner, such that the base 31 of the tipping unit 30 contacts multiple abutting or stopping surfaces when it is inserted into the respective receiving volume of the cover member 24 as intended, and is thus supported in multiple spatial directions. The retaining walls 45 are generally non-pivotable and therefore represent different functional components of the retaining device 40 relative to the retaining device element 41 due to their abutting or stopping function.

[0078] In a first exemplary embodiment, for example, there is a retaining wall 45 disposed on the sidewall of the base 31 of the sharpener unit 30, and another retaining wall 45 extending along the wall of the base 31 of the sharpener unit 30, thereby extending along the end face of the base 31, the wall extending at an angle to the sharpening channel axis A, particularly (substantially) at a right angle. This retaining wall 45 can also serve as a support wall resisting the corresponding sharpening process force F.

[0079] Therefore, in the construction according to the first exemplary embodiment, there are a plurality of first retaining walls 45 arranged or designed to extend along the base 31 of the sharpener unit 30, respectively (substantially) parallel to the sharpening channel axis A, and a second retaining wall 45 extending along the base 31 of the sharpener unit 30 at an angle to, and in particular (substantially) right angle to, the sharpening channel axis A. In this way, exemplary variations of the cage-like or cage-like construction of the aforementioned retaining walls 45 can be realized.

[0080] based on Figures 5 to 9 The second exemplary embodiment shown, wherein Figure 5 A perspective view of the unassembled sharpener unit 30 is shown. Figure 6 A perspective front view is shown of the sharpener unit 30 assembled as intended and held by the holding device 40. Figure 7 This is a rear view of the sharpener unit 30, assembled as intended and held by the holding device 40, and Figure 8 , Figure 9 Cross-sectional views of the retaining device 40 and the sharpener unit 30 are shown respectively. It can also be seen that the retaining device 40 can form a substantially optional adapter device 50 that can be inserted into the cover member 24 and therefore, if necessary, also represents a component of the housing device 20. The corresponding adapter device 50 may have a bottom section 52 forming one or more insertion openings 51 for pencils. As shown, the retaining device element 41 is connected to the base section 52 in a flexible or pivotable manner.

[0081] The corresponding adapter device 50 can also be formed as part of the cover component 24. Therefore, the cover component 24 can in principle be designed as or include the corresponding adapter device 50.

[0082] Based on the second exemplary embodiment, it can also be seen that the holding device 40 may have only one or more holding walls 45 that surround the base 31 of the sharpener unit 30 only laterally, i.e. on the side wall of the base 31, and the side wall is arranged perpendicular to the wall of the base 31 supporting the sharpening element 33.

[0083] based on Figure 1-9As can be seen from the first two exemplary embodiments shown, the retaining device element 41 can be designed as a bending lever or a pivoting lever, wherein the retaining device element can be bent or pivoted on the wall of the housing device in the region at one end, i.e., arranged or formed therein.

[0084] The retaining device 24 is bendably or pivotally arranged or designed on the wall of the housing device, specifically on the wall of the bottom section 52 of the adapter device 50 in the first or second exemplary embodiment. In these exemplary embodiments, the connection of the respective retaining device element 41 is made via the end of the respective base section 44 opposite to the respective actuating section 42. Thus, at or in the end region of the respective base section 44, there are one or more connection points via which the base section 44 is connected to the cover member 24 and / or the adapter device 50. It can be seen that the respective connection points can also define a bending or pivoting axis B about which the retaining device element 41 can be bent or pivoted.

[0085] Figures 10 to 13 The third exemplary embodiment shown, wherein Figure 10 A perspective front view is shown of the sharpener unit 30 assembled as intended and held by the holding device 40. Figure 11 A rear view of the sharpener unit 30, assembled as intended and held by the holding device 40, is shown. Figure 12 and 13 The holding device 40 and the sharpener unit 30 are shown in the first direction and / or position (see [reference]). Figure 12 ) and second direction and / or position (see Figure 13 The cross-sectional view of the [example] differs from other exemplary embodiments primarily in that the retaining device element 41 is designed as a pivot plate or pivot rocker, wherein the retaining device element is flexibly or pivotally arranged or designed on the wall of the housing device 20 or on the adapter device 50 forming part of the housing device 20, as described above, which may optionally be formed or surrounded by the cover member 24. In this exemplary embodiment, the retaining device element 41 is connected via a region of the base section 44 located between the two ends of the retaining device element 41. In this region of the base section 44, which may be arranged or formed substantially centrally relative to the longitudinal extent of the base section 44, there are therefore one or more connection points through which the base section 44 is connected to the housing device 20 or the adapter device 50. In this exemplary embodiment, the connection points also define a pivot axis B about which the retaining device element 41 is pivotable.

[0086] Regarding the assembly and disassembly directions of the sharpener unit 30, the following applies to three exemplary embodiments:

[0087] In the second exemplary embodiment, the sharpener unit 30 is detached towards the tapered or funnel-shaped end of the sharpening channel SK, as indicated by arrow DR, when the holding device element 41 is moved to the second direction and / or position. Therefore, the assembly of the sharpener unit 30 is carried out in the opposite direction, as indicated by arrow MR.

[0088] In the first and third exemplary embodiments, the sharpener unit 30 is disassembled when the holding device element 41 is moved to a second direction and / or position, as indicated by arrow DR, but not towards the tapered or funnel-shaped end of the sharpening channel SK, but in the opposite direction. Therefore, the assembly of the sharpener unit 30 is performed as indicated by arrow MR towards the tapered or funnel-shaped end of the sharpening channel SK.

[0089] The single, multiple, or all features described in conjunction with an exemplary embodiment may be combined with the single, multiple, or all features described in conjunction with at least one other exemplary embodiment.

Claims

1. A device (10) for sharpening at least one pencil, said device comprising: The housing device (20) that defines the housing volume (21), A sharpener unit (30) includes a base (31) defining at least one sharpening channel (SK) for a pencil to be sharpened, the sharpener channel defining a sharpening channel axis (A), and A retaining device (40) for releasably retaining the sharpener unit (30) on or within the housing device (20), wherein the retaining device (40) has: At least one retaining device element (41) is movable to a first direction and / or position, in which the retaining device element applies a retaining force acting on the sharpening unit (30) disposed in the housing volume (21) to the sharpening unit (30), and the retaining device element is movable to a second direction and / or position, in which the retaining device element does not apply a retaining force acting on the sharpening unit (30) disposed in the housing volume (21) to the sharpening unit (30). At least one user-operable actuating element (43) is coupled to at least one retaining device element (41), via which the at least one retaining device element (41) can be moved in a second direction and / or position. The at least one retaining device element (41) is supported with at least one degree of bending motion freedom or pivoting motion freedom, wherein the at least one retaining device element can be transferred to a first direction and / or a second direction and / or a second position by moving in at least one degree of bending motion freedom or pivoting motion freedom. The at least one retaining device element (41) has a base section (44) and an action section (42) arranged or formed on the base section, wherein the at least one action section (42) acts in a form-locking manner on the base (31) of the sharpener unit (30) in a first direction and / or position, and in the first direction and / or position of the at least one retaining device element (41), the base section (44) extends substantially parallel to the basic plane of the sharpener unit (30).

2. The device according to claim 1, wherein, The holding force applied to the sharpener unit (30) by the at least one holding device element (41) in a first direction and / or position has at least one component force oriented in a direction along at least one sharpening channel axis (A).

3. The device according to claim 1 or 2, wherein, The at least one retaining device element (41) interacts with the base (31) of the sharpener unit (30) in a form-locking manner in the first direction and / or position; in such a manner that the at least one retaining device element (41) in the first direction and / or position is form-locking around or buckled against at least one wall of the base (31) of the sharpener unit (30) on the outer and / or inner sides.

4. The device according to claim 1, wherein, The at least one functional section (42) is formed by a shape-locking section.

5. The device according to claim 4, wherein, The base section (44) extends parallel to or at an angle to at least one tapered channel axis (A) in the first direction and / or position.

6. The device according to any one of claims 4 to 5, wherein, The at least one functional section (42) protrudes at an angle from the base section (44) in the region of the free end of the base section (44).

7. The device according to any one of claims 4 to 5, wherein, The actuating element (43) is arranged or formed in the region of the free end on the base section (44) or the actuating section (42).

8. The device according to claim 1, wherein, The at least one retaining device element (41) is designed as a bending lever or a pivoting lever, wherein the retaining device element is flexibly or pivotally arranged or designed on the wall of the housing device (20) in the region of the free end.

9. The device according to claim 1, wherein, The at least one retaining device element (41) is designed as a bending plate or a pivoting plate, wherein the retaining device element is flexibly or pivotally arranged or designed on the wall of the housing device (20) in a region spaced apart from the free end.

10. The device according to claim 1, wherein, The retaining device has at least one retaining wall (45) that forms a contact or stop surface for the base (31) of the sharpener unit (30) inserted into the housing volume (21) of the housing device (20).

11. The device according to claim 10, wherein, The at least one retaining wall (45) is arranged or designed to extend along the base (31) of the sharpener unit (30) parallel to at least one sharpening channel (SK), or The at least one retaining wall (45) is arranged or designed to extend along the base (31) of the sharpener unit (30) at an angle to at least one sharpening channel (SK).

12. The device according to claim 1, wherein, The at least one sharpening channel (SK) tapers in a tapering shape from the insertion opening for the pencil toward the end opposite to the insertion opening, wherein The sharpener unit (30) is movable from the housing volume (21) of the housing device (20) in the direction of the tapered end of at least one sharpening channel (SK) or in the opposite direction when it is moved to the holding device element (41) in the second direction and / or position.

13. A retaining device (40) for releasably retaining a sharpening unit (30) within a housing volume (21) of a housing assembly (20) of the device (10) according to any one of the preceding claims, the retaining device comprising... At least one retaining device element (41) is movable into a first direction and / or position and a second direction and / or position, wherein the retaining device element applies a retaining force acting on the tipping unit (30) to the tipping unit (30) in the first direction and / or position, and does not apply a retaining force acting on the tipping unit (30) to the tipping unit (30) in the second direction and / or position. At least one user-operable actuating element (43) is coupled to at least one retaining device element (41), via which the at least one retaining device element (41) can be moved to a second direction and / or position, wherein, The at least one retaining device element (41) has a base section (44) and an action section (42) arranged or formed on the base section, wherein the at least one action section (42) acts in a form-locking manner on the base (31) of the sharpener unit (30) in a first direction and / or position, and in the first direction and / or position of the at least one retaining device element (41), the base section (44) extends substantially parallel to the basic plane of the sharpener unit (30).

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