Knife and method for cutting off a blade element

Abstract

The invention relates to a knife, in particular a carpet knife, with a housing (2), a guide device (4) arranged in the housing (2) for linearly displacing a knife blade (5) along an exit direction (A), consisting of several blade elements (9) connected to each other via predetermined breaking points (8), with a separation mechanism (12) integrated into the housing (2) for separating a foremost blade element (9a) from the rest of the knife blade (5), and with a collection container (13) for collecting and storing separated blade elements (9b) as well as a method for separating a blade element (9) of a knife (1).

Description

[0001] The present invention relates to a knife, in particular a carpet knife, with a knife blade consisting of several blade elements connected by predetermined breaking points, and to a method for separating a blade element.

[0002] Knives with a blade consisting of several blade elements connected by predetermined breaking points are used as cutting tools in construction work, such as wallpapering, carpeting, plasterboard, etc., and in crafts and similar activities. If the front blade element becomes blunt, it can be broken off and the work can be continued with the sharper blade element following.

[0003] A carpet knife with a housing is known from KR 2003 64 447. A guide device for linearly displacing a blade along an exit direction is known in the housing. The blade consists of several blade elements connected to one another via predetermined breaking points. A separation mechanism for separating a frontmost blade element is integrated into the housing. If the frontmost blade element is in a predetermined position, a lever can be pivoted such that a section of the lever engages the frontmost blade element. Further pivoting of the lever causes the frontmost blade element to be separated from the rest of the blade. The separated blade element falls into a collecting container formed by the housing and can be guided out of the housing by pivoting the entire carpet knife through an exit opening through which the blade can be guided out of the housing.

[0004] If a severed blade element is not removed before continuing to use the carpet knife, it can be flung uncontrollably within the housing. This can damage the knife or the severed blade element can escape from the outlet opening in an uncontrolled manner, thus posing a danger to the user. The lever of the cutting mechanism also poses the risk of pinching the user's fingers or skin when activated.

[0005] The invention is based on the problem of designing and developing the known knife in such a way that operational safety is increased.

[0006] The aforementioned problem is solved by a knife according to claim 1 or a method according to claim 12. Advantageous further developments are the subject of the subclaims.

[0007] The proposed knife comprises a housing in which a guide device for linearly displacing a knife blade along an exit direction is arranged. The knife blade consists of several blade elements connected to one another via predetermined breaking points. Furthermore, a separating mechanism for separating a frontmost blade element from the remaining knife blade is arranged in the housing. The knife comprises a collecting container for collecting and storing severed blade elements.

[0008] According to a first aspect of the present invention, the knife and / or the collecting container is preferably designed to automatically secure severed blade elements in the collecting container. The severed blade elements are then preferably fixed in place in the collecting container. This prevents the severed blade elements from moving uncontrollably within the collecting container, thus preventing damage to the knife. It also prevents severed blade elements from accidentally escaping from the collecting container and posing a danger to the user. The operational reliability of the knife can thus be increased.

[0009] According to a further aspect of the present invention, which can also be implemented independently, the collecting container is preferably detachably connected to the housing. Furthermore, the knife preferably has a magnet arranged and configured such that severed blade elements are fixed in the collecting container by the magnet when the collecting container is connected to the housing. The magnet preferably firmly fixes or holds the severed blade elements in the collecting container, thereby preventing both the severed blade elements from moving uncontrollably within the collecting container and the severed blade elements from accidentally escaping from the collecting container and posing a danger to the user. In this way, the overall operational reliability of the knife can be increased.Preferably, detached blade elements are outside the influence of the magnet when the collecting container is completely detached from the housing. Emptying the collecting container can thus be carried out in a particularly simple and safe manner. It is then only necessary to detach the collecting container from the housing or remove it from the housing. The detached blade elements can then be easily removed from the collecting container, in particular, tipped out.

[0010] According to a further aspect of the present invention, which can also be implemented independently, the separating mechanism can preferably be brought into a separating state in which advancing the knife blade in the exit direction causes the foremost blade element to be separated. Advancing the knife blade then causes the foremost blade element to be separated. The force required to separate the foremost blade element is thus generated by advancing the knife blade and transferred to the foremost blade element. The separation of the foremost blade element is thus achieved by a feed movement of the knife blade that is familiar to the user and poses no risk of pinching a finger or the user's skin.At the same time, the force is introduced by the user at a location away from the foremost blade element, so that if the user's hand or finger slips, there is no risk of coming into contact with a cutting edge of the knife blade or a blade element, which can increase the operational safety of the knife.

[0011] According to a further aspect of the present invention, which can also be implemented independently, the separation mechanism preferably comprises at least one spring element that can be tensioned such that the separation of the foremost blade element is effected by the spring element. At the time the foremost blade element is separated from the knife blade, the user himself does not have to exert any force on the foremost blade element, thereby preventing the risk of slipping and / or uncontrolled contact of the user with the foremost blade element and thus increasing operational safety.

[0012] Preferably, the collecting container can be connected to the housing during a particularly linear assembly movement. This assembly movement can be implemented manually in a particularly simple manner. Alternatively or additionally, the collecting container can preferably be detached from the housing during a particularly linear disassembly movement. This disassembly movement can be implemented manually in a particularly simple manner.

[0013] The knife preferably has a magnet that is associated with a base section and / or a wall section of the collecting container when the collecting container is connected to the housing. Severed blade elements are thus fixed by the magnet in the area of ​​the base section or wall section.

[0014] The collecting container can have a ramp-shaped guide section that adjoins a receiving volume of the collecting container, and in particular the bottom section. A severed blade element can then be guided via the guide section into the receiving volume, and in particular to the bottom section, of the collecting container, thereby ensuring a safe transfer of the severed blade element into the receiving volume, and in particular to the bottom section of the collecting container.

[0015] The separating mechanism preferably comprises a deflecting element that can be moved from a passive position, in which the deflecting element is arranged outside the plane of movement of the knife blade, into a deflecting position in which the deflecting element is arranged in the plane of movement of the knife blade. In the deflecting position, the deflecting element preferably causes the knife blade to be deflected or deflectable at least in the region of the foremost blade element in such a way that further advancement of the knife blade causes the foremost blade element to be severed. In this way, a simple and cost-effective design of the separating mechanism can be achieved.

[0016] The deflection element preferably has a ramp-shaped contact section. In the deflection position, the ramp-shaped contact section is preferably arranged in the plane of movement of the knife blade such that advancing the knife blade in the exit direction causes the foremost blade element to engage with the ramp-shaped contact section. Alternatively or additionally, further advancing of the knife blade then preferably causes the foremost blade element to separate. In this way, a particularly durable and wear-resistant separation mechanism can be created.

[0017] The separation mechanism preferably comprises a clamping element. The clamping element is preferably designed and arranged such that the deflected, frontmost blade element engages with the clamping element as the knife blade is advanced. The frontmost blade element is preferably held by the clamping element against the deflection direction until the frontmost blade element is otherwise separated from the knife blade.

[0018] Preferably, the spring element can be brought into a tensioned state in which the spring element provides the force necessary to detach the foremost blade element. The spring element then provides the force that causes the foremost blade element to detach. The force required to detach the foremost blade element can thus be applied by the user before the blade element is detached. It is therefore not necessary to exert a user-induced force on the foremost blade element at the time the foremost blade element is detached.

[0019] The spring element can preferably be brought into a base state, in which the spring element is unstressed or has a lower tension than in the stressed state. Preferably, when the spring element is transferred from the stressed state to the base state, a separation of the foremost blade element can be effected. Thus, transferring the spring element from the stressed state to the base state advantageously directly causes the separation of the foremost blade element.

[0020] The separating mechanism preferably comprises a separating element that is coupled or can be coupled to the spring element. The separating element can preferably be moved from a base position, in which the separating element is arranged on a side of the blade facing the collecting container, to a clamping position, in which the separating element is arranged on the side of the blade facing away from the collecting container.

[0021] The foremost blade element is preferably advanceable in the tensioned position of the separating element such that subsequent transfer of the separating element to the base position causes the foremost blade element to be severed. In the tensioned position, the separating element is subjected to a force by the tensioned spring element, which leads to a transfer of the separating element to the base position and the separation of the foremost blade element. This allows for a simple design and reliable operation of the separating mechanism.

[0022] The proposed method is designed for severing a blade element of a knife, preferably of the proposed type, in particular a carpet knife. The knife comprises a housing, a guide device arranged in the housing for linearly displacing a knife blade along an exit direction, consisting of several blade elements connected by predetermined breaking points, and a separation mechanism integrated into the housing for separating a frontmost blade element from the knife blade. Furthermore, the knife comprises a collecting container for collecting and storing severed blade elements.

[0023] In this respect, reference may be made to all statements relating to the knife according to the invention.

[0024] According to a first aspect of the invention, severed blade elements are automatically secured in the collecting container. The severed blade elements cannot then leave the collecting container or move uncontrollably within the collecting container, thereby increasing the operational reliability of the knife.

[0025] According to a further aspect of the invention, which can also be implemented independently, the collecting container is preferably detachably connected to the housing, and the knife has a magnet. Severed blade elements are preferably fixed in the collecting container by the magnet when the collecting container is connected to the housing, and are released from the influence of the magnet when the collecting container is completely detached from the housing.

[0026] According to a further aspect of the invention, which can also be implemented independently, the separation of the foremost blade element is preferably effected by advancing the knife blade in the exit direction.

[0027] According to a further aspect of the invention, which can also be implemented independently, the separation mechanism preferably comprises at least one spring element. The separation of the foremost blade element is preferably effected by the spring element, in particular by a force provided by the spring element.

[0028] Additional advantages, features, characteristics, and aspects of the present invention will become apparent from the claims and the following description and a preferred embodiment with reference to the drawing. It shows: Fig. 1 is a schematic, perspective view of a proposed knife; Fig. 2 is a schematic sectional view of the knife with a separating mechanism and a collecting container A) at the beginning of the separating process, B) during the separating process, C) at a more advanced point in the separating process, D) at the end of the separating process of the foremost blade element, and E) the collecting container completely detached from the housing following the separating process; Fig. 3 is a schematic sectional view of the knife with a separating mechanism and a collecting container according to a second embodiment A) at the beginning of the separating process, B) during the separating process, C) at a more advanced point in the separating process, and D) at the end of the separating process of the foremost blade element.4 a schematic sectional view of the knife with a separating mechanism and a collecting container according to a third embodiment A) at the beginning of the separating process, B) during the separating process, C) at a more advanced point in time of the separating process and D) at the end of the separating process of the foremost blade element.

[0029] In the following description, the same reference numerals are used for the same or similar parts, whereby the same or similar advantages and properties can be achieved even if a repeated description is omitted.

[0030] Fig. 1 shows a schematic view of a proposed knife 1, in particular a carpet knife. The knife 1 serves as a cutting tool, for example, for carpet work, wallpapering, plasterboard work, handicrafts, or the like.

[0031] In the illustrated example, the knife 1 has a housing 2, which in particular has or forms a knife handle 3. The housing 2 or the knife handle 3 can be gripped by a user to perform cutting work with the knife 1.

[0032] The housing 2 is preferably formed from at least one plastic or comprises at least one plastic.

[0033] The knife 1 preferably further comprises a guide device 4. By means of the guide device 4, a knife blade 5 can be held in the housing 2 in a linearly displaceable manner. The guide device 4 enables a guided displacement of the knife blade 5 along an exit direction A. The knife blade 5 can be guided in the exit direction through an exit opening 6 of the knife 1 at least partially out of the housing 2 in order to release a cutting edge 7 of the knife blade 5 for cutting work, as shown in Fig. 1 is shown.

[0034] The knife blade 5 preferably consists of a plurality of blade elements 9 connected to one another via predetermined breaking points 8. The predetermined breaking points 8 enable one or more blade elements 9 to be separated from the knife blade 5, as will be explained in detail below.

[0035] The knife blade 5 and in particular the blade elements 9 are preferably made of a magnetizable metal.

[0036] The knife blade 5 is preferably detachably connected to a guide element 10, via which a user can move the knife blade 5 in and against the exit direction A. The user can then move the knife blade 5 with the aid of the guide element 10 without coming into direct contact with it.

[0037] The housing 2 preferably has a window-like recess 11 through which the knife blade 5 is at least partially visible. This makes it easy for a user to determine how many blade elements 9 the knife blade 5 has.

[0038] The guide element 10 preferably extends perpendicular to the exit direction A and in particular completely through the window-like recess 11 to facilitate the movement of the knife blade 5 by a user. Alternatively, it is also possible for the housing 2 to be designed without a window-like recess 11. The guide element 10 is then also preferably accessible to the user from outside the housing 2.

[0039] The knife 1 preferably further comprises a separating mechanism 12 for separating a frontmost blade element 9a. In this context, a "frontmost blade element" is understood to mean the frontmost blade element in the exit direction.

[0040] The separation mechanism 12 is preferably integrated into the housing 2 and / or connected thereto.

[0041] The knife 1 also preferably has a collecting container 13 for collecting and storing separated blade elements 9b, such as Fig. 2D und Fig. 2E show in detail.

[0042] Preferably, the knife 1 and / or the collecting container 13 is designed to automatically fix severed blade elements in the collecting container 13.

[0043] The term "automatic" in this case refers to the immediate and unconditional fixation of the severed blade element 9b. The severed blade element 9b is thus fixed in the collecting container 13 after the cutting process without any further action by the user, such as pivoting the knife 1 in a predetermined direction. It is not necessary to hold or move the knife 1 in a predetermined position to fix the severed blade element 9b in the collecting container 13.

[0044] The term "fixed" in this case means holding the severed blade element 9b in a stationary position.

[0045] The severed blade element 9b is then preferably fixed or held in place in such a way that uncontrolled movement of the severed blade element 9b within the collecting container and uncontrolled escape of the severed blade element 9b from the collecting container 13 are prevented. The severed blade element 9b then remains in the collecting container 13 in a particularly secure manner, thereby improving the overall operational reliability of the knife 1.

[0046] Preferably, the collecting container 13 is detachably connected to the housing 2. The collecting container 13 is then preferably detachably connected to the housing 2 and can be completely detached from the housing 2 ( Fig. 2D und Fig. 2E ). The collecting container 13 can preferably be detached from the housing 2 and releasably connected to it as often as desired.

[0047] The collecting container 13 can thus be advantageously detached or separated from the housing 2, which enables easy emptying of the collecting container 13, as will be explained below.

[0048] It is particularly advantageous if the collecting container 13 can be connected to the housing 2 within the scope of a, in particular linear, assembly movement. In particular, the assembly movement is directly responsible for fastening the collecting container 13 to the housing 2.

[0049] The collecting container 13 can preferably be inserted at least partially into the housing 2, as in Fig. 2A bis Fig. 2D is shown.

[0050] Alternatively or additionally, the collecting container 13 can be detached from the housing 2, preferably within the scope of a disassembly movement, in particular a linear one. The disassembly movement preferably causes the connection between the collecting container 13 and the housing 2 to be released.

[0051] The collecting container 13 can preferably be connected to the housing 2 in the outlet direction A and in particular can be inserted into the housing 2.

[0052] It is particularly advantageous if the collecting container 13 can be detached from the housing 2 opposite to the outlet direction A, in particular can be removed or pulled out of the housing.

[0053] How Fig. 2 bis Fig. 4 show, the knife 1 preferably has a magnet 14. The magnet 14 is preferably arranged and designed such that the separated blade element 9b is fixed in the collecting container 13 by the magnet 14 ( Fig. 2E ) when the collecting container 13 is connected to the housing 2.

[0054] Preferably, the magnet 14 is designed as a magnetic strip and / or as a magnetic sheet.

[0055] The separated blade elements 9b preferably automatically enter the sphere of influence of the magnet 14 during the separation process or immediately after the separation process and are attracted by it. The magnet 14 ensures that the separated blade elements 9b are fixed in the collecting container 13, preferably via the magnetic force acting on the separated blade elements 9b.

[0056] The magnetic force exerted by the magnet 14 on the severed blade element 9b is preferably greater than the weight of the severed blade element 9b. In particular, the magnetic force exerted by the magnet 14 is greater than its weight once the frontmost blade element 9a is severed.

[0057] Due to the acting magnetic force, the separated blade elements 9b can preferably not move uncontrollably in the collecting container 13 or escape from the collecting container 13.

[0058] Preferably, the separated blade element 9b is outside the influence of the magnet 14 when the collecting container 13 is completely detached from the housing 2, as Fig. 2E The separated blade elements 9b are preferably not attracted by the magnet 14 when the collecting container 13 is completely detached from the housing 2. The separated blade elements 9b can then be moved freely in the collecting container 13 ( Fig. 2E ). It is then possible to easily empty the collecting container 13 and dispose of the separated blade elements 9b without having to directly touch the separated blade elements 9b, whereby the operational reliability of the knife 1 can be improved overall.

[0059] The collecting container 13 can be made of plastic and / or a magnetizable material. Alternatively, the collecting container 13 can also comprise a plastic and / or a magnetizable material.

[0060] If the collecting container 13 is made of plastic, there is no interaction between the magnet 14 and the collecting container.

[0061] However, if the collecting container 13 is made of a magnetizable material or has a magnetizable material, the magnet 14 can also be used to secure the collecting container 13. The collecting container 13 is then held on or in the housing 2 by the magnetic force and can be detached from the housing 2 against the magnetic force. The magnet 14 is then designed as a multifunctional element that, in addition to securing the severed blade elements 9b, also holds or fixes the collecting container 13 on or in the housing 2.

[0062] How Fig. 2E shows in detail, the collecting container 2 preferably has a bottom section 15. The bottom section 15 is preferably flat. The magnet 14 is preferably associated with the bottom section 15 when the collecting container 13 is connected to the housing 2, as Fig. 2A bis Fig. 2D The separated blade elements 9b are then fixed to the base section 15 or in the area of ​​the base section 15, as Fig. 2D , Fig. 3D and Fig. 4D show.

[0063] The collecting container 13 preferably has a, in particular flat, wall section 16. The magnet 14 can alternatively or additionally be assigned to the wall section 16 if the collecting container 13 is connected to the housing 2. The separated blade elements 9b can then also be fixed to the wall section 16 or in the region of the wall section 16.

[0064] Preferably, the magnet 14 can be arranged and configured in the knife 1 such that the knife 1, particularly in a region of the housing 2 associated with the base section 15, can be magnetically attached to an object made of a magnetizable material via the magnet 14. The knife 1 is then preferably held to the object by the magnetic force and can be released or removed from the object in a particularly simple manner.

[0065] How Fig. 2E further shows, the collecting container 13 preferably has a ramp-shaped guide section 17 which adjoins the base section 15. Severed blade elements 9b are preferably guided via the guide section 17 to the base section 15. Severed blade elements 9b are preferably attracted by the magnet 14. After the separation process, the severed blade element 9b can engage with the guide section 17 and / or fall onto the guide section 17 and / or be attracted to the guide section 17 by the magnet 14. The guide section 17 preferably serves to assist the magnet 14 in transporting the severed blade elements 9b to the base section 15. The severed blade elements 9b are preferably fixed to the base section 15 by the magnet 14.

[0066] The collecting container 13 preferably has a ceiling section 18. The bottom section 15, the wall section 16 or the wall sections 16 and / or the ceiling section 18 preferably define a receiving volume 19 of the collecting container 13. Severed blade elements 9b are preferably fixed within the receiving volume 19.

[0067] The guide section 17 thus preferably serves to transfer separated blade elements 9b into the receiving volume 19 after the separation process.

[0068] Preferably, the cover section 18 supports the knife blade 5 at least in sections in the direction of the collecting container 13, as Fig. 2 bis Fig. 4 Alternatively or additionally, the ceiling section 18 can be a component of the guide device 4 or can support the guide device 4 at least in sections in the direction of the collecting container 13.

[0069] The separating mechanism 12 is preferably integrated into the housing 2 or connected thereto, as already described above. The separating mechanism 12 can preferably be brought into a separating state in which advancing the knife blade 5 in the exit direction A causes the frontmost blade element 9a to be separated, in particular broken off. Fig. 2B and Fig. 3B show the separating mechanism 12 in the separated state. The advancement of the knife blade 5 by the user, in particular via the guide element 10, then causes the frontmost blade element 9a to be separated. The user then does not have to directly touch either the knife blade 5 or a blade element 9 to separate the frontmost blade element 9a. The user can apply the force for separating the frontmost blade element 9a in a particularly simple manner via the known advance movement of the guide element 10 and thus introduce it into the frontmost blade element 9a.

[0070] How Fig. 2 and Fig. 3 further show, the separating mechanism 12 preferably has a deflection element 20. The deflection element is preferably from a passive position ( Fig. 2A ) and Fig. 3A ), in which the deflection element 20 is arranged outside the plane of movement E of the knife blade 5, into a deflection position ( Fig. 2B and Fig. 3B ), in which the deflection element 20 is arranged in the plane of movement E of the knife blade 5 in such a way that the knife blade 5 is deflected or deflectable at least in the region of the foremost blade element 9a in such a way that further advancement of the knife blade 5 causes the frontmost blade element 9a to be severed.

[0071] The term "plane of movement" is understood here to mean a plane defined by a flat side 21 of the knife blade 5 and the exit direction A, wherein the plane is laterally bounded by the cutting edge 7 and the side edge of the knife blade 5 facing away from the cutting edge 7. The plane of movement E thus has the width of the knife blade 5, i.e., the extent between the cutting edge 7 and the side edge facing away from the cutting edge 7, and extends perpendicular thereto in and opposite to the exit direction A.

[0072] If the deflection element 20 is adjusted from the passive position into the deflection position, the knife blade 5 can be deflected at least in the area of ​​the foremost blade element 9a, as the transition from Fig. 2A to Fig. 2B shows. Further advancement of the knife blade 5 ( Fig. 2C ) then preferably causes the front blade element 9a to be separated, as in Fig. 2D is shown.

[0073] Alternatively, the deflection element 20 can be adjusted from the passive position to the deflection position without the knife blade 5 being deflected, as Fig. 3B shows. Advancing the knife blade 5 in the exit direction A then preferably causes the foremost blade element 9a to engage with the deflection element 20 ( Fig. 3B und Fig. 3C ). A further advance of the knife blade 5 then preferably causes the knife blade 5 to be deflected at least in the area of ​​the frontmost blade element 9a. A further advance of the knife blade 5 ( Fig. 3C ) then preferably causes the front blade element 9a to be separated, as Fig. 3D is shown.

[0074] The separated blade element 9b is preferably automatically fixed in the collecting container 13 after separation.

[0075] The deflection element 20 can be adjusted by, in particular, linear displacement and / or pivoting and / or rotation from the passive position to the deflection position and vice versa, although other movements of the deflection element 20 for adjusting from the passive position to the deflection position are also possible.

[0076] How Fig. 3 shows in detail, the deflection element 20 preferably has a ramp-shaped contact section 22. Preferably, the ramp-shaped contact section 22 is arranged in the deflection position in the movement plane E of the knife blade 5 such that advancing the knife blade 5 in the exit direction A causes the foremost blade element 9a to engage with the ramp-shaped contact section 22, as the transition from Fig. 3B on Fig. 3C shows, and / or that a further advance of the knife blade 5 in the exit direction causes the separation of the foremost blade element 9a, as the transition from Fig. 3C on Fig. 3D shows.

[0077] The foremost blade element 9a preferably enters the sphere of influence of the magnet 14 by being deflected during the separation process. If the foremost blade element 9a is separated, the magnet 14 preferably causes the separated blade element 9b to be attracted and fixed in the collecting container 19, as the transition from Fig. 2C to Fig. 2D and the transition from Fig. 3C to Fig. 3D shows.

[0078] Preferably, the magnetic force exerted by the magnet 14 on the frontmost blade element 9a is greater than the weight of the frontmost blade element 9b as soon as the frontmost blade element 9a is deflected or has a predetermined deflection. This ensures that the frontmost blade element 9a is automatically secured in the collecting container 13 after separation.

[0079] The separating mechanism 12 preferably has a clamping element 23. The clamping element 23 is preferably designed and arranged such that the deflected frontmost blade element 9a engages with the clamping element 23 when the knife blade 5 is advanced in the exit direction A, as Fig. 2C The clamping element 23 is preferably held by the clamping element 23 against the deflection direction U until the frontmost blade element 9a is otherwise separated from the knife blade 5. The term "deflection direction" preferably refers to the direction in which the knife blade 5 or at least the frontmost blade element 9a is deflected, in particular by the deflection element 20. The deflection direction U is preferably arranged or oriented transversely, in particular perpendicularly, to the exit direction A and / or to the movement plane E.

[0080] The clamping element 23 can, in particular, cause a further deflection of the knife blade 5 or the frontmost blade element 9a when the knife blade 5 is advanced in the exit direction A. In this way, the clamping element 23 can assist and thus simplify the separation of the frontmost blade element 9a.

[0081] If the clamping element 23 is engaged with the foremost blade element 9a, the deflection element 20 can be moved into its passive position. The clamping element 23 then preferably holds the foremost blade element 9a in a deflected state. Further advancement of the knife blade 5 then preferably causes an increasing deflection of the foremost blade element 9a until the foremost blade element 9a is severed. Furthermore, after the separation of the foremost blade element 9a, the knife blade 5 preferably automatically transitions to a non-deflected state, in which the knife blade 5 is preferably located completely within the movement plane E and / or is aligned within the movement plane E.

[0082] Preferably, the deflection element 20 can be secured in the deflection position, in particular with a locking mechanism. It is also possible to manually hold the deflection element 20 in the deflection position.

[0083] It is also possible for the deflection element 20 to be automatically transferred to the passive position after the frontmost blade element 9a has been severed. For example, the deflection element 20 can be automatically released, in particular by the knife blade 5, when the frontmost blade element 9a engages with the clamping element 23 or is held by the clamping element 23. For example, when the frontmost blade element 9a is engaged with the clamping element 23, a further advance of the knife blade 5 in the exit direction A can result in the knife blade 5, in particular the frontmost blade element 9b, unlatching or releasing the deflection element 20, for example by triggering an unlatching mechanism.

[0084] It is also possible that the deflection element 20 can alternatively or additionally be manually transferred into the passive position, for example by the user releasing the locking connection, in particular by pressing in the deflection direction U.

[0085] In Fig. 2 A first embodiment of the separating mechanism 12 is shown. To separate the frontmost blade element 9a, the knife blade 5 or the frontmost blade element 9a can be moved into a starting position ( Fig. 2B ). The starting position can be indicated by a mark in the area of ​​the window-like recess 11. The deflection element 20 can then be transferred into its deflection position, in which the deflection element 20 deflects the foremost blade element 9a in the deflection direction U, as shown in Fig. 2B Further advancement of the knife blade 5 then preferably causes the foremost blade element 9a to engage with the clamping element 23 and to be held thereby, as shown in Fig. 2C The deflection element 20 can then be transferred to its passive position, as shown in Fig. 2C is also shown. Further advancement of the knife blade 5 then preferably results in the separation of the foremost blade element 9a ( Fig. 2D ).

[0086] In Fig. 3 A second embodiment of the separating mechanism 12 is shown. To separate the frontmost blade element 9a, the knife blade 5 or the frontmost blade element 9a can be moved into a starting position ( Fig. 3A ). The starting position can be indicated by a mark in the area of ​​the window-like recess 11. The deflection element 20 can then be moved into its deflection position ( Fig. 3 ). Advancement of the knife blade 5 then preferably causes the foremost blade element 9a to engage with the deflection element 20, in particular the ramp-shaped contact section 22 of the deflection element. Further advancement preferably causes the foremost blade element 9a to be deflected, as the transition from Fig. 3B to Fig. 3C If the knife blade 5 is advanced further, the foremost blade element 9a is preferably separated from the knife blade 5, as the transition from Fig. 3C to Fig. 3D shows.

[0087] The Fig. 3 The separating mechanism 12 shown may also be a clamping element 23, as in Fig. 2 shown, to assist in deflecting and separating the foremost blade element 9a.

[0088] How Fig. 4 As shown, the separation mechanism 12 preferably has a spring element 24 that can be tensioned such that the separation of the frontmost blade element 9a is effected by the spring element 24. The spring element 24 can then be tensioned such that the spring element 24 provides the force necessary to separate the frontmost blade element 9a, and the separation of the frontmost blade element 9a is effected by this force. The force of the spring element 24 is thus the cause of the separation of the frontmost blade element 9a.

[0089] It is possible to provide two spring elements 24. However, it is also possible to provide more than two spring elements 24.

[0090] Preferably, the spring element 24 is in a tension state ( Fig. 4B und Fig. 4C ) by the spring element 24 providing the force necessary to detach the frontmost blade element 9a. The spring element 24 is then able to exert the force necessary to detach the frontmost blade element 9a on the frontmost blade element 9a, as will be explained below.

[0091] Preferably, the spring element 24 can be brought into a basic state in which the spring element 24 is untensioned or has a lower tension than in the tensioned state. The basic state of the spring element 24 is in Fig.4A und Fig. 4D shown. By transferring the spring element 24 from the tension state to the base state, the separation of the foremost blade element 9a can preferably be effected, as the transition from Fig. 4C on Fig. 4D shows.

[0092] The separating mechanism 12 further preferably has a separating element 25 which is coupled or can be coupled to the spring element 24. The separating element 25 is preferably arranged from a basic position in which the separating element 25 is arranged on a side of the knife blade 5 facing the collecting container 13 ( Fig. 4A und Fig. 4D ), into a clamping position in which the separating element 25 is arranged on the side of the knife blade 5 facing away from the collecting container 13 ( Fig. 4B und Fig. 4C ), can be brought.

[0093] When the separating element 25 is in the base position, the spring element 24 is preferably in the base state. Preferably, the spring element 24 is in the tensioned state when the separating element 25 is in the clamped position.

[0094] Adjustment of the separating element 25 from the basic position to the clamping position preferably takes place against the force of the spring element 24. During this adjustment, the spring element 24 is thus preferably tensioned.

[0095] Adjusting the separating element 25 from the clamping position to the base position preferably causes a complete or partial relaxation of the spring element 24.

[0096] If the separating element 25 is in the basic position, the knife blade 5 can be displaced in the exit direction A to expose the cutting edge 7 of at least the frontmost blade element 9a for cutting work. In the basic position, the knife blade 5 can also be displaced counter to the exit direction A to position the cutting edge 7 of the frontmost blade element 9a within the housing 2 to prevent any hazard caused by the cutting edge 7.

[0097] To initiate the separation process of the foremost blade element 9a, the knife blade 5 can be moved into a starting position in which the foremost blade element 9a is arranged in the exit direction A in front of the separation mechanism 12, as Fig. 4a The separating element 25 is then preferably adjustable into the clamping position, as the transition from Fig. 4A to Fig. 4B shows.

[0098] It is particularly advantageous if the separating element 25 can be moved from the base position to the clamping position by means of an adjusting element 26, in particular manually. The transfer of the separating element 25 from the base position to the clamping position preferably occurs in a direction transverse, in particular perpendicular, to the plane of movement E of the knife blade 5.

[0099] The separating element 25 can also be pivoted and / or bent to transfer it from the basic position to the clamping position.

[0100] The separating element 25 can be secured in the clamping position, particularly by locking it. It is also possible to hold the separating element 25 in the clamping position manually, particularly via the adjusting element 26.

[0101] The foremost blade element 9a can be advanced in the clamping position of the separating element 25 preferably in the exit direction A (transition from Fig. 4B to Fig. 4C ) that a subsequent transfer of the separating element 25 into the base position causes a separation of the foremost blade element 9a, such as a transition from Fig. 4C to Fig. 4D shows.

[0102] The separating element 25 preferably has an engagement surface 27, which engages with the foremost blade element 9a during the transition of the separating element 25 from the clamping position to the base position, whereby the force required for separation is transmitted to the blade element 9a. The engagement surface 27 preferably faces the collecting container 13, as Fig. 4 shows.

[0103] The knife blade 5 is preferably starting from the starting position ( Fig. 4A ) into a separation position ( Fig. 4C ) in the exit direction A, in which a subsequent transfer of the separating element 25 into the base position causes the foremost blade element 9a to be separated. It is particularly advantageous if the starting position and / or the separating position can be visually identified. Thus, the starting position and / or the separating position can be marked accordingly, for example, by markings and / or display objects in the region of the window-like recess 11. In this way, it can be prevented that the foremost blade element 9a is positioned too far or insufficiently far in the exit direction A.

[0104] It is also possible for the start position and / or separation position to be haptically recognizable to the user, for example by increasing the resistance to moving the knife blade 5 in the area of ​​the start position and / or separation position.

[0105] It is particularly advantageous if the separating element 25, which is held in the clamping position, in particular by locking, is released by advancing the knife blade 5. Advancing the knife blade 5 into the separating position then preferably causes the separating element 25 to unlock. After the separating element 25 is released, the spring element 24 or the spring force provided by the spring element 24 causes the separating element 25 to transition into the base position, whereby the foremost blade element 9a is severed.

[0106] In its base position, the separating element 25 can support the knife blade 5 toward the collecting container 13. For this purpose, the separating element 25 can have a support surface 28. The support surface 28 is preferably facing away from the collecting container 13.

[0107] Preferably, the spring element 24 is designed as a tension spring, as in Fig. 4 is shown. However, it is also possible to design the spring element 24 as a compression spring. The spring element 24 is then preferably arranged entirely in its basic state on the flat side 21 of the knife blade 5 facing away from the collecting container 13, in particular within the housing 2.

[0108] It is also possible to pivot the adjusting element 26 in order to move the separating element 25 from the basic position into the clamping position.

[0109] It is also conceivable for the adjusting element 26 to be formed by a housing section that is otherwise pivotable relative to the housing 2. Pivoting the adjusting element 26, formed as a housing section, relative to the housing 2 then causes the separating element 25 to be moved from the base position to the clamping position, in particular against the spring force of the spring element 24.

[0110] The pivot axis about which the adjusting element 26 can be pivoted is preferably arranged at least substantially perpendicular to the exit direction A and / or within the plane of movement E.

[0111] The knife blade 5 can then be moved from the starting position ( Fig. 4A ) into the separation position ( Fig. 4C ) in the exit direction A. The frontmost blade element 9a is preferably positioned between the collecting container 13 and the separating element 25.

[0112] Transferring the separating element 25 from the clamping position to the base position then preferably causes the frontmost blade element 9a to be separated.

[0113] According to a further teaching, which is of independent significance, a method is provided for severing a blade element 9 of a knife 1, in particular a carpet knife, preferably a knife 1 according to the proposal. The knife 1 preferably has a housing 2 and a guide device 4 arranged in the housing 2 for linearly displacing a knife blade 5 along an exit direction A. The knife blade 5 preferably consists of several blade elements 9 connected to one another via predetermined breaking points 8. The knife 1 preferably also has a separating mechanism 12 integrated into the housing 2 for separating a frontmost blade element 9a from the rest of the knife blade 5, as well as a collecting container 13 for collecting and storing severed blade elements 9b.

[0114] In this respect, reference may be made to all statements relating to the proposed knife 1.

[0115] Preferably, separated blade elements 9b are automatically fixed in the collecting container 13.

[0116] The collecting container 13 is preferably detachably connected to the housing 2. The knife 1 preferably has a magnet 14, and the severed blade element 9b is fixed in the collecting container by the magnet 14 when the collecting container 14 is connected to the housing 2. Further preferably, the severed blade element 9b is released from the influence of the magnet 14 when the collecting container 13 is completely detached from the housing 2.

[0117] Preferably, the separation of the foremost blade element 9b is effected by advancing the knife blade 5 in the exit direction A.

[0118] The separation mechanism 12 preferably has a spring element 24. The separation of the foremost blade element 9a is preferably effected by the spring element 24, in particular by a force provided by the spring element 24. The spring element 24 is preferably tensioned such that the separation of the foremost blade element 9b is effected by the spring element 24, in particular by the force provided by the spring element 24. Bezugszeichenliste:

[0119] 1 Knife 2 Housing 3 Knife handle 4 Guide device 5 Knife blade 6 Exit opening 7 Cutting edge 8 Predetermined breaking point 9 Blade element 9 Front blade element 9 Separated blade element 10 Guide element 11 Recess 12 Separation mechanism 13 Collecting container 14 Magnet 15 Base section 16Wall section 17Guide section 18Ceiling section 19Accommodation volume 20Deflection element 21Flat side 22Contact section 23Clamping element 24Spring element 25Separation element 26Adjusting element 27Engagement surface 28Support surface AExit direction EMovement plane UDeflection direction

Claims

1. Knife, in particular a carpet knife, with a housing (2), with a guide device (4) arranged in the housing (2) for linearly displacing a knife blade (5) along an exit direction (A), consisting of several blade elements (9) connected to one another via predetermined breaking points (8), with a separating mechanism (12) integrated into the housing (2) for separating a frontmost blade element (9a) from the knife blade (5) in the rest, and with a collecting container (13) for collecting and storing separated blade elements (9b), characterized by that the knife (1) and / or the collecting container (13) is / are designed to automatically fix severed blade elements (9b) in the collecting container (13), and / or thatthe collecting container (13) is detachably connected to the housing (2), wherein the knife (1) has a magnet (14) which is arranged and designed such that severed blade elements (9b) are fixed in the collecting container by the magnet (14) when the collecting container (13) is connected to the housing (2), and are outside the influence of the magnet (14) when the collecting container (13) is completely detached from the housing (2), and / or that the separating mechanism (12) can be brought into a separating state in which advancing the knife blade (5) in the exit direction (A) causes the foremost blade element (9a) to be separated, and / or that the separating mechanism (12) has at least one spring element (24) which can be tensioned such that the separation of the foremost blade element (9b) is effected by the spring element (24).

2. Knife according to claim 1, characterized in thatthe collecting container (13) can be connected to the housing (2) within the scope of a, in particular linear, assembly movement and / or can be detached from the housing (2) within the scope of a, in particular linear, disassembly movement.

3. Knife according to claim 1 or 2, characterized in that the collecting container (13) has a, in particular flat, bottom section (15) and that the magnet (14) is assigned to the bottom section (15) when the collecting container (13) is connected to the housing (2), and / or that the collecting container (13) has a, in particular flat, wall section (16) and that the magnet (14) is assigned to the wall section (16) when the collecting container (13) is connected to the housing (2).

4. Knife according to claim 3, characterized in thatthe collecting container (13) has a ramp-shaped guide section (17) which adjoins the base section (15), and wherein separated blade elements (9b) are guided to the base section (15) of the collecting container (13) via the guide section (17).

5. Knife according to one of the preceding claims, characterized in that the collecting container (13) is made of plastic and / or a magnetizable material or comprises a plastic and / or a magnetizable material.

6. Knife according to one of the preceding claims, characterized in thatthe separating mechanism (12) has a deflecting element (20) which can be brought from a passive position, in which the deflecting element (20) is arranged outside the plane of movement (E) of the knife blade (5), into a deflecting position in which the deflecting element (20) is arranged in the plane of movement (E) of the knife blade (5) in such a way that the knife blade (5) is deflected or deflectable at least in the region of the foremost blade element (9a) in such a way that further advancement of the knife blade (5) causes the foremost blade element (9a) to be separated.

7. Knife according to claim 6, characterized in thatthe deflection element (20) has a ramp-shaped contact section (22), such that the ramp-shaped contact section (20) is arranged in the deflection position in the movement plane (E) of the knife blade (5) such that advancing the knife blade (5) in the exit direction (A) causes the foremost blade element (9a) to engage with the ramp-shaped contact section (22) and / or further advancing the knife blade (5) causes the foremost blade element (9a) to be severed.

8. Knife according to claim 6 or 7, characterized in that the separating mechanism (12) has a clamping element (23) which is designed and arranged in such a way that the deflected foremost blade element (9a) engages with the clamping element (23) when the knife blade (5) is advanced and is held against the deflection direction (U) until the foremost blade element (9a) is otherwise separated from the knife blade (5).

9. Knife according to one of the preceding claims, characterized in that the spring element (24) can be brought into a tension state in which the spring element (24) provides the force necessary to separate the foremost blade element (9a).

10. Knife according to claim 9, characterized in that the spring element (24) can be brought into a basic state in which the spring element (24) is untensioned or has a lower tension than in the tensioned state, and that by transferring the spring element (24) from the tensioned state to the rest state, a separation of the foremost blade element (24) can be effected.

11. Knife according to one of the preceding claims, characterized in thatthe separating mechanism (12) has a separating element (25) which is coupled or can be coupled to the spring element (24) and which can be brought from a basic position, in which the separating element (25) is arranged on a side of the knife blade (5) facing the collecting container (13), into a clamping position in which the separating element (25) is arranged on the side of the knife blade (5) facing away from the collecting container (13).

12. Knife according to claim 11, characterized in that the foremost blade element (9a) can be advanced in the clamping position such that a subsequent transfer of the separating element (25) into the base position causes the foremost blade element (9a) to be separated.

13. A method for separating a blade element (9) of a knife (1), in particular a carpet knife, in particular according to one of claims 1 to 12, wherein the knife (1) has a housing (2), a guide device (4) arranged in the housing (2) for linearly displacing a knife blade (5) along an exit direction (A), consisting of several blade elements (9) connected to one another via predetermined breaking points (8), a separating mechanism (12) integrated into the housing (2) for separating a frontmost blade element (9a) from the rest of the knife blade (5), and a collecting container (13) for collecting and storing separated blade elements (9b), characterized by thatseparated blade elements (9b) are automatically fixed in the collecting container (13), wherein the collecting container (13) is detachably connected to the housing (2), wherein the knife (1) has a magnet (14) and that separated blade elements (9b) are fixed in the collecting container (13) by the magnet (14) when the collecting container (13) is connected to the housing (2), and are released from the influence of the magnet (14) when the collecting container (13) is completely detached from the housing (2), and / or that a separation of the foremost blade element (9a) is effected by advancing the knife blade (5) in the exit direction (A), and / or that the separating mechanism (12) has at least one spring element (24), and that the separation of the foremost blade element (9a) is effected by the spring element (24), in particular by a force provided by the spring element (24).

Images