EP3843959A1

EP3843959A1 - Knife with a knife handle and a blade

Info

Publication number: EP3843959A1
Application number: EP19759370.0A
Authority: EP
Inventors: Filip Marovic; Rainer Messerschmidt; Bernd Riepe
Original assignee: Knipex Werk C Gustav Putsch KG
Current assignee: Knipex Werk C Gustav Putsch KG
Priority date: 2018-08-27
Filing date: 2019-08-27
Publication date: 2021-07-07
Also published as: DE102018120861A1; CN112638601A; US11839990B2; WO2020043696A1; TW202017723A; US20210323178A1

Abstract

The invention relates to a knife (12) with a knife handle (2) and a blade(3), said blade (3) being extendable and retractable in relation to the knife handle (2). The aim of the invention is to improve a knife of this type in respect of its handling. For this purpose, a reinforcing part (57) is provided which can support an extended portion of the blade (3), the reinforcing part (57) being movable in respect of the knife handle (2) and being detachably connected to the blade (3). Another solution is that the knife (1) has a blade-moving carriage (30) and/or a reinforcing part-moving carriage (31) and that a latching holder for latch-adjusting different extended positions of the blade (3) is provided, said latching structure being formed below the region in which the blade (3) or an imaginary continuation of the blade (3) extends, when seen from the blade-moving carriage (30) and/or the reinforcing part-moving carriage (31). In another embodiment, the blade-moving carriage (30) has a holding magnet (56) for holding cooperation with the blade (3). In yet another embodiment, a closing cap (11) is arranged on the knife handle (2) at the rear end of the blade (3), said closing cap closing the movement path for the blade-moving carriage (30) and/or the reinforcement part-moving carriage (31).

Description

description

Knife with a knife handle and a blade

Technical field

[0001] The invention relates to a knife with a knife handle and a blade, the blade being extendable and retractable with respect to the knife handle.

State of the art

Knives of the type in question are known under the term "cutter knife", "carpet knife", "Japan knife" or "Stanley knife". These knives are provided with a knife handle, in which a blade is accommodated in a retracted position when the knife is not in use. To bring the blade into a use position, it is extended relative to the knife handle, at least with respect to a length of the blade over a section thereof, so that at least one area of the blade tip projects freely beyond one end of the knife handle.

[0003] Basically, two different designs are known with regard to the blade. On the one hand, such an embodiment with a rigid blade, which can optionally be used in different positions or orientations and which can be replaced after wear, and such embodiments in which the blade is designed as a so-called break-off or segment blade , in which after wear of a blade segment in the direction of extension, it is broken off along a predetermined breaking point.

[0004] Reference is made, for example, to the prior art to DE 10 2005 038 308 A1 or DE 10 2011 007234 B3. Summary of the invention

In view of the above-described prior art, it is an object of the invention to further improve a knife of the type in question, particularly with regard to handling.

[0006] According to a first idea of the invention, a possible solution to the object is given in a knife in which a reinforcement part is placed on which an extended area of the blade can be supported, the reinforcement part being movable and releasable relative to the knife handle connected to the blade.

When the blade is extended, the reinforcing part provides support for the blade, in particular in a bending direction of the blade that results, with a corresponding load on the blade, without a reinforcing part, perpendicular to a broad surface extension of the same. Depending on the application of the knife, and in addition on the extension length of the blade relative to the knife handle, such a possible bending stress of the blade can lead to an uncontrolled breaking through of the blade, possibly to a breaking off along a given predetermined breaking point between two blade segments. The reinforcing part counteracts such bending stress, correspondingly stabilizing in particular the extended area of the blade. In addition, the stability of the extended area of the blade achieves an exact cut.

[0008] Like the blade itself, the reinforcing part can be moved relative to the knife handle, so it can preferably be extended and retracted accordingly in the direction of displacement of the blade. This sliding displacement of the reinforcing part can be coupled with that of the blade, so that the blade can be displaced in a sliding manner in the extending or retracting direction a corresponding extension or retraction of the reinforcement can result.

Alternatively, the traversability of the reinforcing part can be carried out independently of that of the blade. This offers the user the option of optionally assigning the reinforcement part to the extended area of the blade, so that the user can also use the blade under less bending stress if required. In addition, according to such a configuration, the reinforcing part can also be brought into a blade support position only over a partial area of the extended area of the blade, alternatively over the entire extended area of the blade.

[0010] A further possible solution to the problem can be given in the case of a knife which has a blade traversing slide and / or a reinforcing part traversing slide and wherein a latching holder is provided for the latched setting of different extended positions of the blade, in that the latching seen from the blade slide and / or reinforcing part slide below the area in which the blade or an imaginary extension of the blade extends.

Knives of the type in question have, in particular for moving the blade in and out, a traversing slide which is operatively connected to the blade, for example as a result of a positive connection. Can propelled carriage of the comparison in this case have an outwardly directed handle for the user, by means of which a sliding displacement of the traversing _S is accessible chlittens and on this the blade.

[0012] The given latching, in particular between the slide and knife handle, means that different extension positions are possible, but also different entry positions, the blade and / or a provided reinforcement part possible. In connection with segmented demolition blades, it is known, depending on the distance between the predetermined breaking points between two blade segments, to offer latching positions of the movement _S and thus of the blade.

[0013] The latching, in particular between the travel carriage and the knife handle, in particular the knife handle housing or a fixed part connected to the housing, takes place according to the invention, seen from the travel carriage, below the area in which the blade or a roof extension of the blade extends or with respect to the handle of the traversing carriage facing the user on the underside of the blade or a blade plane resulting from the broad side lower surface of the blade facing away from the handle. With respect to the handle of the carriage facing the user, a latching that is covered at least over the area of the blade by the blade, and also by the carriage itself, can result. This can result in hidden locking.

[0014] According to a further solution, a knife can be provided in which the blade traversing slide has a holding magnet, for holding interaction with the blade.

The preferably provided holding magnet can be used according to the invention to support the holder of the blade on the associated traversing carriage, this in particular in the course of refitting the traversing carriage with a blade (blade change). The holding magnet can be provided in addition to a possible positive connection between the carriage and the blade. The magnetic force can also be selected so that a since the blade is securely held on the blade traversing carriage, accordingly does not fall off from it even in an overhead position, for example, but on the other hand the user can lift the blade from the blade traversing carriage without tools if the blade is to be changed is possible.

[0016] A solution to the problem can also be achieved in that a locking cap is arranged on the knife handle on the rear side of the blade, which slides the travel path for the blade travel and / or closes the reinforcement part slide. The blade traversing carriage and / or the reinforcing part

According to a possible embodiment, the carriage can be displaced essentially over the entire longitudinal extent of the knife handle in the blade displacement direction and / or reinforcing part displacement direction. In the direction of extension, the sliding position of the carriage can be limited by the stop. This allows an undesired displacement of the traversing _S chlittens thereto and optionally arranged blade are avoided on the facing front end of the knife handle out.

[0018] In the opposite direction of displacement, correspondingly in the direction of entry, in particular the blade traversing slide, for example to enable a blade change, can be shifted beyond the relevant end of the knife handle, preferably with the locking between traverses being canceled and knife handle. The blade - and correspondingly the reinforcing part in the reinforcing part travel carriage - can then be removed entirely from the area of the knife handle. [0019] In normal use of the knife, the Schiebeverlagerbarkeit the Blades movable slide and / or the gain partly traversing _S chlittens also stop-limited in the retraction. This stop limitation can be given by a closure cap blocking the travel path essentially transversely to the travel direction. The carriage can be pushed against these against a limited stroke. For example, for the purpose of changing the blade, the closure cap can be removed to release the travel path.

The features of the above-described independent claims are significant both individually and in any combination with each other, further features of an independent claim can be combined with the features of a further independent claim or with features of several independent claims, further also with only individual features of one or more of the further independent claims.

[0021] The object can also be achieved, for example, in the case of a knife in that a reinforcing part which can be moved relative to the knife handle is provided with the blade, the latching between the moving carriage and the knife handle below the blade or a - Thought extension of the blade can be formed and / or the blade traversing carriage has a holding magnet for holding interaction with the blade, wherein a locking cap can optionally be arranged on the back of the knife handle on the blade.

Further features of the invention are often explained below, also in the figure description, often in their preferred association with the subject matter of claim 1 and / or the further independent claim or claims or with features of further claims. But you can also in one Assignment to only individual features of claim 1 and / or of the further independent claims or of the respective further claims or in each case independently of importance.

[0023] According to a possible embodiment, the reinforcement part can be movable relative to the blade. The direction of movement of the reinforcing part can, as is also preferred, be the same as that of the blade. The reinforcement part and the blade can thus extend over different travels and (to a limited extent) can be extended or retracted independently of one another.

[0024] The knife handle can be elongated with a longitudinal direction. When the knife is normally used, such an elongated knife handle is encompassed essentially transversely to the longitudinal direction by the fingers of one hand of the user, while the thumb, which may also be used to actuate the carriage, points essentially in the longitudinal direction. Thus, the knife handle can also have a length dimension that can correspond approximately to 5 times to 10 times or more of the width extension considered transversely to this.

[0026] According to a preferred embodiment, the blade can be movable in the longitudinal direction of the knife handle, preferably both in the extending and in the retracting directions.

The reinforcing member can also be movable in the longitudinal direction of the knife handle, correspondingly in the same direction of displacement as the blade. [0028] According to a possible embodiment, the reinforcing part can be designed in the form of a rod associated with a longitudinal edge of the blade, the reinforcing part according to a further embodiment being designed to grip around the edge of the blade. The stiffening of the blade using the reinforcing part takes place accordingly in the region of the edge of the blade, in particular the edge opposite the cutting edge of the blade, quasi in the region of the blade back.

[0029] For this purpose, the reinforcing part can have, for example, a U-shaped cross-sectional area in a cross section perpendicular to the longitudinal extent, the reinforcing part with its U-legs running essentially parallel in cross-section along the top and bottom of the blade area along the Edge edge can cover and the edge edge of the blade assigned to the U-web connecting the U-legs of the reinforcement part runs. The reinforcing part can have such a U-shaped cross-sectional configuration, in particular over its entire usable length that can be brought into cooperation with the blade, as a result of which the reinforcing part is resistant to bending, in particular in a direction transverse to the extension or retraction. direction, is trained. [0031] In this case, the U-legs of the reinforcing part profile can have a free extension length, viewed from the U-web connecting these legs, which is one fifth to one tenth or less that in the same direction and thus transverse to Direction of travel of the blade can correspond to the considered width of the blade. [0032] In addition, in one possible embodiment, the knife handle can have a travel mount for a blade travel carriage connected to the blade. The traversing device provides guidance for the traversing carriage, especially when the blade is being extended or retracted. The traversing motion can be slit-like in the longitudinal extension of the knife handle.

[0033] The knife handle can also have a traversing motion for a reinforcing member traversing slide connected to the reinforcing member. Such a movement can also take a slot-like manner in the longitudinal direction of the knife handle, as described above.

[0034] A preferred embodiment is one in which the blade traversing slide and the reinforcing partial traversing carriage are arranged in the same travel holder. The preferably only one traversing seat of the knife handle is used in accordance with the guidance and, if appropriate, support for both the blade traversing carriage and the reinforcing partial traversing carriage. Thus, if the two travel slides are arranged together in the travel mount, the blade travel slide and the reinforcement partial travel slide in the travel mount can be arranged one behind the other in relation to the longitudinal direction or the travel direction. In this case, as is also preferred, the blade travel carriage, viewed in the extension direction, can be arranged in front of the reinforcement partial travel carriage.

In a further embodiment, the blade can be designed as a flat part, having a thickness that is essentially the same in a longitudinal as well as in a transverse direction. For example, the blade can be made from an endless steel strip. [0036] The blade can also have predetermined breaking points for breaking off a used blade segment. Thus, with a possible blade and an exemplary length of approximately 80 mm and a width of approximately 9 to 25 mm considered transversely thereto, and a substantially constant thickness of approximately 0.4 to 0.7 mm, 10 to 15 such break-offs Predetermined breaking points are provided, more preferably about 12 predetermined breaking points, so that there is a corresponding number of usable blade sections.

[0037] To lock the travel _{S, a} locking part accommodated in the blade travel slide and / or in the reinforcement partial travel slide and locking openings or locking recesses arranged one behind the other in the longitudinal direction can be provided. The catch is determined by engagement of the catch part in one of the catch openings. In particular, the blade traversing carriage can lock with the knife handle in steps of blade segment length, for example. This is given by a corresponding spacing of the latching openings or latching recesses in the longitudinal direction. In one possible embodiment corresponds to the Verrastungsabstand of the reinforcing member movable slide-in comparison to the sliding direction of the traversing Blades _S chlittens.

[0038] The arrangement can also be selected such that the latching part of the reinforcing part moving carriage can enter the same latching openings or latching recesses as the latching part of the blade carriage.

Individual, for example bore-like latching openings can be provided in the knife handle. In this regard, it is also possible to have a latching shape that is overall slot-like in the longitudinal direction, with waist-like narrowed regions that delimit successive latching openings in the longitudinal direction. [0040] According to a further, also preferred, configuration, the catch part taken in the blade travel carriage can penetrate the blade in the region of a blade opening. In a configuration of this type, the latching part can serve, in addition to the latching of the travel _S, also the form-fitting setting of the blade on the travel carriage.

Thus, the blade in the blade travel on the latching part taken can enforce the blade both in the locked state and in the movement of the blade from a first to a second latching position. The assertive position or form-fit position between Blades carriage and blade is correspondingly preferably over the entire possible traversing path of the blade assembly guided at the associated traverse _S chlittens in the Verfahraufnahme held by the blade passing through locking part.

[0042] In a further embodiment, the locking setting of the blade carriage and the blade on the carriage can be formed separately. For example, a locking projection which is separate from the locking part and which passes through the blade opening for holding the blade can be provided on the blade travel carriage.

[0043] In addition, the locking projection can be loaded into the locking position via a spring. For this purpose, a separate spring acting on the locking projection can be provided with a separate design of the locking for the blade on the slide. With regard to the spring, it can be a leaf spring, for example, and further

for example, a cylinder compression spring or the like. [0044] The separate carriage locking down the blade on the Blades traversing further offers the possibility of lifting the catch down the blade without the locking setting the Blades to influence traversing _S chlittens. For this purpose, it can further be provided that the locking of the blade on the locking projection of the blade movement _{S can be} canceled by means of an actuatable key provided on the housing side. This button can preferably be operated by the user from the outside of the housing.

The removal of the locking of the blade on the blade slide can slide according to a possible embodiment in each

Traversing _Se ttings of Blades traversing _S chlittens be possible. A configuration in which the removal of such locking down the blade tellung only in a predetermined traverse of the Blades _S _S is traversing chlittens possible. More preferably, this position corresponds to a maximum possible extended position of the blade together with the blade travel carriage. Only in this position is it preferably possible to cancel after pressing the button.

The blade traversing carriage and / or the reinforcing member traversing carriage can have an actuating part and a carriage part, the actuating part being movable in the longitudinal direction relative to the carriage part. The actuating part is exposed to the outside for actuation by the user, for example for thumb actuation. This actuating part can be shift-shifted in the longitudinal direction of the knife housing, this - initially - relative to the slide part guided in the process, which is initially blocked by the above-described latching.

When actuated in the longitudinal direction, the actuating part - with a correspondingly blocked slide part - pulls out the latching part from the latching opening and thus a release of the latching of the slide part, corresponding overall to the relevant slide.

After release of the latching, the actuating part can be moved together with the slide part in the longitudinal direction, so correspondingly for extending or retracting the blade and / or the reinforcing part. In an advantageous manner, in order to release the locking and displacement of the blade, for example, into an extended position, the actuating part, which can usually be actuated by the thumb, is shifted in the longitudinal direction alone. This sliding displacement of the actuating part causes both the release of the locking and the displacement of the moving part connected in the traversing part (blade or reinforcing part). The actuation is hereby simplified compared to known solutions, in which the actuating part has to be depressed essentially perpendicular to the direction of travel and then pushed.

According to a possible embodiment, the locking part can be acted upon by a spring in the locking position. This user-friendly training leads to an automatic return of the locking part in the direction of the locking position. Accordingly, this can be taken in automatically as soon as the latching part overlaps with a latching opening. The latching part can be raised via the actuating part accordingly against the force of the spring.

In one possible embodiment, the spring can be a leaf spring, alternatively, for example, a conventional cylinder spring in the form of a compression or tension spring; in addition, if necessary, a spring element made of an elastically resilient plastic material. The actuating part can also interact with the slide part via a spring _Z acting in the longitudinal direction. This loads the actuating part and slide part in the direction of a basic position, which can correspond to the locking position. The sliding displacement of the actuating part relative to the slide part is accordingly preferably carried out against the force of the spring.

This spring can also be, for example, a cylinder spring, further, for example, in the form of a compression or tension spring, and moreover, for example, a leg spring or an elastically resilient plastic element.

[0053] The spring can be supported at both ends in the slide part, but can be lifted off by the actuating part from a respective supporting surface when the actuating part is acted upon in the longitudinal direction. Accordingly, in a basic position of the travel carriage that is not acted upon by the actuating part, the spring can be supported at both ends, if appropriate, only on corresponding surfaces of the slide part. Only when the actuating part is displaced relative to the slide part is an end region of the spring raised from the facing surface section of the slide part, bearing against a corresponding surface section of the actuating part.

In a further embodiment, a wedge-slide part can be provided, which can be moved in the longitudinal direction relative to the slide part by means of the actuating part in order to act on the latching part. The wedge slide part can interact directly with the locking part _Z here. Accordingly, there is an indirect interaction of the actuating part and the locking part. According to a possible embodiment, the wedge-sled part is displaced relative to the sled part via the actuating part, so it is furthermore preferably carried along in the sliding direction via the actuating part. About one in the wedge The wedge surface provided on the slide part can be pulled out of the locking opening in the course of this displacement.

[0055] For this purpose, the latching part can have a loading surface that is free-standing transversely to the longitudinal direction, for interaction with the wedge-slide part, in particular for interaction with a related wedge surface of the wedge-slide part.

[0056] In a possible embodiment, the closure cap on the knife handle, in particular on the handle housing, can be plugged and / or latched. In addition, the closure cap can be slide-fastened transversely to the longitudinal extent on the knife handle. For example, a groove-like form-fit guide for the closure cap can be provided at the end of the knife handle. In the direction of insertion or the direction of attachment of the closure cap, the sliding displacement path can be stop-limited, and the end position, which may be stop-limited, can be locked, for example.

[0057] Alternatively, the closure cap can also be connected to the handle housing so that it can be pivoted or folded.

[0058] In a possible embodiment, the outer contour of the knife handle, in particular of the handle housing, further merges into the contour of the sealing cap, at least approximately steplessly, in particular in the end area having the sealing cap.

[0059] According to a preferred embodiment, the closure cap can only be pulled off in one direction transverse to the longitudinal extent of the knife handle, in order in this way to accommodate the travel holder leading the carriage or carriages Expose rearward removal of the carriage with the traversing part (blade and / or reinforcing part) arranged thereon.

[0060] In this case, the closure cap can have a groove which is exposed to the outside, in order to provide a break-off aid when the closure cap is removed. In this case, the groove is suitable for receiving an end edge region of the blade segment which is the foremost in the extension direction, where after this edge edge region of the blade segment is surrounded in a cross section in a substantially U-shaped manner by the cap-side groove wall. Using the sealing cap, this foremost blade segment can be broken off along the given predetermined breaking point in a manner that is easy to handle.

In this case, a further development proves to be particularly advantageous, in which a magnet can be arranged in the closure cap associated with the groove, for holding a broken-off blade segment in the groove.

The broken blade segment is held securely due to the arrangement of the magnet in the groove of the cap. Accordingly, there is no uncontrolled jumping off of the blade segment in the course of the breaking off process. This provides safe and improved handling.

The magnetic force is preferably chosen so that the broken-off blade segment is held securely in the groove, taking into account the forces acting on the blade segment in the course of the breaking-off process. The magnetic force is in turn set so low that the blade segment can be removed from the groove without any problems, if necessary with the aid of pliers for grasping the blade segment. [0063] According to a possible design for releasing or latching, the latching part can be essentially perpendicular to one

Width of the blade can be moved. Alternatively, a related movement of the latching member is chlittens possible transversely to a sliding direction of the movable slide Blades and / or the gain partially traversing _S. In this way, a height-reduced design of the knife as a whole can be achieved.

[0064] The Blades traversing carriage and / or the Verstärkungsteil- traversing carriage can have a width, wherein a width direction of the reinforcing partially traversing _S chlittens and / or the traversing Blades _S can chlittens correspond to a width of the blade, wherein further the latching portion in the width direction of traversing Blades _S chlittens and / or the Verstärkungteil- movable slide is movable. The width or the width direction is preferably viewed transversely to a longitudinal extent of the knife blade or transversely to a direction of displacement of the blade, moreover optionally transversely to a longitudinal extent of the knife as a whole.

The locking part can be a ball or a cylinder. In the case of a cylindrical configuration of the latching part, it can be transverse to the

Longitudinal extension, for example, a circular disc shape, an oval

Set the cross-sectional area or a polygonal area.

[0066] According to a further preferred embodiment, the locking part can be designed in the shape of a locking pin.

The blade traversing carriage and / or the reinforcing member traversing carriage can have a locking projection on one longitudinal side, for Interaction with the locking part in a locking position. This

In a locking position, the locking projection acts on the locking part in such a way that it is pushed into an associated locking opening or locking recess, which is preferably fixed relative to the slide.

The blade method can also slide and / or the

Reinforcement part- slide have a shift before jump, to interact with the locking part in a release position. The

Shifting projection can be suitable to shift the latching part out of the latching position in the course of lifting the latching and / or to hold this latching part in a supportive manner in the release position in the course of a displacement of the respective slide.

In a preferred embodiment, the displacement projection can project further in the width direction than the latching projection. The

Projecting projection with a dimension viewed in the width direction protrude beyond the locking projection, which dimension can correspond to about a tenth to a third of the largest extension of the locking part viewed in the width direction, further for example about a fifth.

The locking projection and / or the shift before jump can be provided in a possible embodiment on a sled relative to the traversing on this displaceably held wedge slide part.

Brief description of the drawings

The invention is explained below with reference to the accompanying drawing, which, however, only represents exemplary embodiments. A part that is only explained with reference to one of the exemplary embodiments and not in a further exemplary embodiment due to the particularity highlighted there is replaced by another part, is therefore also described for this further exemplary embodiment as a possible existing part. The drawing shows:

Figure 1 shows the knife in a perspective view relating to a first embodiment.

Figure 2 is a top view of the knife.

Figure 3 is a side view against the knife.

4 shows the rear view against the knife;

5 shows the end view against the knife;

6 shows the longitudinal section along the line VI-VI in Figure 2.

7 shows the enlargement of area VII in FIG. 6;

8 shows the section along the line VIII-VIII in FIG. 7;

9 shows the section along the line IX-IX in FIG. 7;

Fig. 10 is a detailed view of a carriage area of the

Knife in partial explosion;

11 shows the travel carriage area in a top view, with the actuation parts removed, the travel carriage; 12 shows the knife in an explosion perspective representation;

Fig. 13 is an enlarged explosion perspective view of a

V experie _S chlittens;

14 is an exploded perspective view of the knife in a bottom view;

15 shows the longitudinal section along the line XV-XV in FIG. 6;

16 shows the longitudinal section along the line XVI-XVI in FIG. 2;

17 shows the enlarged representation of area XVII in FIG. 16;

18 shows the enlarged representation of the area XVIII in FIG. 16;

FIG. 19 shows a representation according to FIG. 17, but with the actuating part of a blade travel slide displaced in an extension direction, in order to cancel a locking position;

20 shows a representation according to FIG. 18, but relating to the position according to FIG. 19;

FIG. 21 shows a follow-up view to FIG. 19, when the actuating part is shifted further and the entire blade traversing carriage is carried along with the blade held thereon;

22 shows a representation according to FIG. 18, but relating to the subsequent representation according to FIG. 21; 23 shows a follow-up view of FIG. 21, when the pushing action on the actuating part is canceled and the rest position is reached;

24 shows a sectional position according to FIG. 19, but after the latching position has been released in order to displace the blade traversing carriage in the entry direction;

25 shows a representation corresponding to FIG. 19, relating to the

Detachment and sliding shifting of a reinforcing part carriage in the direction of extension;

26 is a perspective view of a front end of the knife, with the blade partially extended;

FIG. 27 shows a follow-up view of FIG. 25, after the reinforcing part moving part has been displaced in the extension direction;

28 shows a representation corresponding to FIG. 26, with the reinforcement part extended;

29 shows the section along the line XXIX-XXIX in FIG. 28, together with the associated enlarged detail;

30 shows a representation corresponding to FIG. 1, relating to a second embodiment; 31 is a perspective bottom view against the knife according to FIG

Arrow XXXI in Figure 30; 32 shows the top view of the knife of the second embodiment;

33 is a side view against the knife;

34 shows an explosion perspective representation of the knife;

35 an exploded perspective single representation of a blade carriage and a reinforcement member carriage;

36 is an exploded perspective view of the knife in bottom view;

Fig. 37 shows the enlarged section along the line XXXVII-XXXVII in

Figure 33, relating to a rest position;

38 shows a representation corresponding to FIG. 37, but relating to a position after the locking has been released;

39 shows the section along the line XXXIX-XXXIX in FIG. 32;

Fig. 40 the knife in perspective view with a view

Back, with blade fully extended;

41 shows the section along the line XLI-XLI in FIG. 40;

42 is a sectional view corresponding to FIG. 41, however

regarding a detent position for possible removal of the blade. Description of the embodiments

Shown and described, initially with reference to the illustration in FIG. 1, is a knife 1 in the manner of a so-called cutter knife, the illustrations in FIGS. 1 to 29 showing a first embodiment.

The knife 1 initially and essentially has a knife handle 2 and a blade 3, which can be designed as a so-called segment blade.

The blade 3 can be displaced with respect to the knife handle 2, in the longitudinal direction L of the knife handle 2. This results in an extension direction A and an insertion direction E of the blade 3. The knife handle 2 initially has a housing 4, for example Consisting of a hard plastic, for example in the form of a molded plastic part. Alternatively, the housing 4 can also be a metal housing, for example consisting of a die-cast zinc.

With respect to the longitudinal direction L, the housing 4 has two housing narrow sides 5 lying opposite one another in a cross section, for example according to the illustration in FIG. 8, and a housing bottom 6 connecting these housing narrow sides 5 to each other, opposite the housing bottom 6 a housing cover 7 is formed, which in the middle leaves a slot opening 8 extending in the longitudinal direction L over the entire length of the housing cover 7. Furthermore, the housing 4 has an opening 9 on the front and an opening 10 on the rear. The slot opening 8 ends in these openings

9 and 10. The rear opening 10 is closed by a closure cap 11 in the usual state of use of the knife 1. This cap 11 is positively connected to the housing 4 in the use position. For this purpose, a form-fit guide is provided in the exemplary embodiment shown, the closure cap 11 with reference to a cross section through the closure cap 11 perpendicular to a possible displacement direction of the closure cap 11 of the housing cover 7 and the housing base 6 facing guide webs 12, which in corresponding guide grooves 13 of the housing 4 engage in the area of the housing cover 7 and the housing base 6. As a result, the sliding cap can be moved by sliding

11 given transversely to the longitudinal direction L.

In the push-on direction, the sliding displaceability of the closure cap 11 is limited by the stop. For this purpose, a stop 14 is formed on the housing 4 in the corresponding section of the narrow housing side 5. Contrary to the push-on direction, the closure cap 11 is freely displaceable, in order to enable the closure cap 11 to be completely removed from the housing 4.

The cap 11 has a groove 15 exposed to the outside. This is provided on the cap side, when the closure cap 11 is arranged on the knife handle 2, facing away from the slot opening 8, extends here essentially in the same direction as the guide webs 12 of the closure cap 11 and thus preferably transversely to the longitudinal direction L.

In a cross section, the groove 15 forms an essentially U-shaped receptacle. This can be used with the cap 11 removed, to break off a tip-side blade segment 16 of the blade 3 along a predetermined breaking line 17.

A magnet 18 is provided, assigned to the groove 15 and acting on a blade segment 16 which may be located in the groove 15. This can be embedded in the preferred plastic material of the closure cap 11, in particular assigned to a groove surface delimiting a U-leg of the groove 15 in cross section. It can be a permanent magnet.

A blade segment 16 broken off from the blade 3 with the aid of the closure cap 11 is thus securely held magnetically in the groove 15.

Part of the knife handle 2 is furthermore a movement preferably formed from a metal material 19. This, as also shown, can be a bent sheet metal part. This is also elongated in accordance with the housing 4 in the longitudinal direction L, having two receiving narrow sides 20 lying opposite one another in cross section and a receiving base 21 connecting the receiving narrow sides 20.

A receiving ceiling 22 is formed opposite the receiving floor 21. This also has a slot opening 23 which extends in the center in the longitudinal direction L and which, starting from a rear opening 24 in the longitudinal direction L, extends in the direction of an opening 25 on the end of the travel receptacle 19, but this is done with one provided on the front, in Essentially complete section 26 of the receiving ceiling 22.

[0086] The traversing 19 is in the housing 4 below the slot opening 8 in a cross-section adapted with respect to the traversing 19 Mounted 27. In this mounting position, the slot opening 23 of the movement is directed to 19 upward towards the slot opening 8 of the housing 4. The rear end with the opening 24 can extend essentially in the plane that is established through the rear opening 10 of the housing 4 and is oriented perpendicular to the extension or retraction direction A, E.

On the face side, the travel receptacle 19 extends freely beyond the face opening 9 of the housing 4, approximately over a length which is defined by the essentially closed section 26 of the receptacle ceiling 22.

In the essentially U-shaped receiving contour of the traversing 19, which results in cross-section transversely to the longitudinal direction L, the blade 3 is first accommodated in a sliding manner in the extending direction A or entering direction E. In a use position of the knife 1, at least the tip-side blade segment 16 is displaced into a freely projecting position via the tip-side edge of the tip pointing in the extension direction A.

Overall, the blade 3 is shaped like a sheet with longitudinal edge edges and narrow edge edges, a longitudinal edge edge of the blade 3 forming the cutting edge 28.

The blade 3 here points with its broad side surfaces in the direction of the housing cover 7 and the housing base 6.

Furthermore, the blade 3 is subdivided into a plurality of trapezoidal blade segments 16, which are arranged one behind the other in the longitudinal direction L, which blade segments 16 are initially connected to one another via predetermined breaking lines 17. For example, ten, eleven to fifteen such blade segments 16 can be embossed. Only the blade segment 16, which is exposed on the face side, can be used for cutting, but also all exposed blade segments 16, that is to say also a plurality of segments protruding beyond the face end.

In the rear end of the blade 3, a bore-like blade opening 29 is formed, for the form-fitting mounting of the blade 3 on a blade slide 30. The blade slide 30 as well as a reinforcing part described further below Traversing slides 31 essentially consist of a sled part 32, an actuating part 33 and a wedge sled part 34, further a locking part 35.

The carriage part 32 is held on the method of taking 19 in the longitudinal direction L so that it can be shifted. For this purpose, outside grooves 36 of the slide part 32, which extend in the longitudinal direction L, capture the edge edges of the slot openings 23 on the travel receiving side which are to be pointed towards one another. With reference to a cross section, part of the slide part 32 can extend within the U opening of the travel 19 and a - larger - part of the slide part 32 essentially in the area of the slot opening 8 of the housing 4.

The slide part 32 is box-shaped, pointing in the direction of the housing cover 7. On the box bottom of the slide part 32, the wedge slide part 34 lies on the slide in the longitudinal direction L, thereby in the longitudinal direction device L flanked on both sides and optionally - at least partially - guided through box walls 38 of the slide part 32.

In addition, a substantially elongated rectangular opening 39 is formed in the bottom 37 of the box. The longitudinal side in relation to a plan of the opening is transverse to the longitudinal direction L.

Through this opening 39, the locking part 35, which in the first embodiment is designed as a locking pin 66, whose pin body is essentially adapted to the cross section, engages the opening surface of the opening 39.

According to this configuration, the latching part 35 is held in the carriage part 32 in a rotationally fixed manner about an axis directed perpendicular to the longitudinal direction L and perpendicular to the housing base 6, but can be displaced linearly along this axis. [0099] The latching part 35 also penetrates this in the first embodiment

Wedge-slide part 34 in the area of an opening 40 on the bottom, in particular in the area of a waist section 41. Extended pin sections, essentially adapted to the opening area of the opening 39 in the box bottom 37, remain on both sides of the waist section 41. The pin section 42, which in this case engages in an interior area of the wedge slide part 34, forms free-standing loading surfaces 43 on the underside, ie directed towards the housing base 6, for interaction with wedge surfaces 44 of the wedge slide part 34. The wedge surfaces 44, viewed in the longitudinal direction L, are provided on both sides of the opening 40 passing through the wedge slide part 34. Furthermore, two wedge surfaces 44 running in opposite directions in the longitudinal direction L are provided on each side, which, viewed in the longitudinal direction L, meet in the middle of the extent of the wedge slide part 34 in a valley. In this valley, the latching part 35 rests on the wedge surfaces 44 with its action surfaces 43 in a locked basic position (see FIG. 17).

The wedge surfaces 44 extend accordingly starting from this in the extending direction A and in the retracting direction E increasing at an angle of about 10 to 20 degrees.

[00103] The latching part 35 can be loaded in the direction of the receiving base 21 via a spring 45 in the form of a leaf spring.

[00104] According to the illustrations, the spring 45 can be attached to the slide part 32 in an abutment-like manner using a fastening element 46, for example in the form of a screw (see FIG. 17).

The locking part 35 engages through the opening 39 of the slide part 32 in a locking opening 47 in the receiving base 21. In this locking position, the carriage 30, 31 is fixed in the longitudinal direction L.

When viewed in the longitudinal direction L, the receiving base 21 has a plurality of latching openings 47 which are arranged one behind the other and have the same configuration with respect to the opening area. Their opening cross-section essentially corresponds to that of the opening 39 in the slide part 32, and is correspondingly adapted to the cross-sectional design of the locking part 35, in particular the locking pin 66. The latching openings 47 can, as also shown, be interconnected by waist-like, slot-like openings, correspondingly reduced with respect to the latching openings 47 with respect to the opening area.

[00108] In order to enable sliding displacement of the slide part 32, the locking connection between the locking part 35 and the locking opening 47 must be canceled. For this purpose, the wedge slide part 34 is preferably acted on such that it is displaced in the longitudinal direction L relative to the slide part 32. This is done using the actuating part 33, which is exposed in the housing-side slot opening 8 with an actuating surface 48.

The actuating part 33 has, on the underside, in the direction of the sled part 32, entrainment projections 49 which, viewed in the longitudinal direction L, come into contact with associated surfaces of the wedge sled part 34 on the outside of the wall. The wedge slide part 34 is accordingly caught in the longitudinal direction L between these driving projections 49.

A sliding displacement of the actuating part 33 in the extension direction A brings about a corresponding dragging of the wedge slide part 34 via the rear driving projection 49 viewed in the extending direction A. The latching part 35 is moved in a direction perpendicular to the longitudinal direction via the rear wedge surfaces 44 in the extending direction A. L pulled out of the locking opening 47 (see Ligur 19). This relative sliding displacement of the actuating part 33 and of the wedge-sled part 34 takes place until the section of the sliding part 34 cooperating with the driving projection 49 engages against the stop against the raised latching part 35, after which, with a corresponding further sliding displacement of the actuating part 33, Driving direction A is now also carried over the locking part 35, the slide part 32.

In the same way, a sliding displacement takes place in the opposite direction, namely in the direction of retraction E, here the rear projection 49 of the actuating part 43 in the direction of retraction E with the wedge

The slide part 34 interacts and the rear wedge surfaces 44 in the retraction direction E lift the locking part 35 or pull it out of the locking opening 47 (see FIG. 24).

It is corresponding to the cancellation and sliding shift in the longitudinal direction L alone a willful shift shift of the respective carriage 30, 31 necessary.

[00113] When the sliding displacement of the travel _S 30, 31 has ended, with the load on the actuating part 33 being correspondingly removed in the sliding direction, the respective wedge-slidable part 34 with the actuating part 33 returns to an initial position, which preferably corresponds to the locking position .

The wedge slide part 34 is loaded via a spring 50, here in the form of a cylinder compression spring, in the direction of the basic position. This spring 50 rests in a spring holder 51, which is formed in the slide part 32 on the box base 37, in this case is supported in a (neutral) basic position, optionally on both sides at the end at associated wall sections of the spring holder 51.

The slide-side contact surfaces for the spring 50 are each penetrated by projections 52 of the actuating part 33, at least one protrusion jump 52 can also be formed directly by a driving projection 49. The projections 52 have mutually directed support surfaces 53, which come into effect depending on the direction of travel A or E, for lifting the facing end of the compression spring received in the spring receptacle 51 from the facing contact surface in the receiving surface 51. When the spring 50 is designed as a cylinder The compression spring is tensioned accordingly when the actuating part 33 is displaced in a direction of displacement between a support surface 53 of the actuating part 33 and a contact surface of the spring receptacle 51. [00116] As a result of this configuration, the only one spring 50 causes a return to the starting position both in the case of a sliding displacement in the extending direction A and in the entering direction E.

[00117] The above-described mode of operation for unlocking, sliding displacement and locking relates both to the blade travel slide 30 and to the reinforcing partial travel slide 31.

The latching part 35 of the blade movement _S slide 30 can at the same time reach through the blade opening 29, with which this slide 30 is positively connected to the blade movement. The blade 3 is in this case accommodated on the underside of the slide part 32 in a receiving pocket 54 which opens towards the receiving base 21 of the travel holder 19. Even when the latching part 35 is in the raised, non-latching position, the latching part 35 continues to engage through the blade opening 29, with the result that the positive locking position is maintained even in the course of a sliding displacement. The associated end of the blade 3 lies in the receiving pocket 54 in such a way that its broad side rests on a preferably flat contact surface 65. This contact surface 65 is penetrated by the latching part 35.

The receiving pocket 54 and thus also the contact surface 65 is delimited by a contact surface 64 against which a transverse edge of the blade 3, preferably running parallel to the predetermined breaking lines 17, can rest. The course of the contact surface 65 is adapted to that of the transverse edge. In a preferred embodiment, the transverse edge runs at a distance from the contact surface 65.

In the course of an extension of the blade 3, the free end of the blade 3 pointing in the direction of the travel receiving tip is moved out through the front opening 25 of the travel 19. The blade 3 is in this case in the direction of the blade plane in the region of the ceiling-side section 26 and in the region of the receiving base 21 of the method of taking 19 curved spring sections 55.

[00122] To further secure the form-fit holder between the slide-side latching part 35 and the blade 3, a holding magnet 56 can also be arranged in the slide part 32 of the blade-moving slide 30, for holding interaction with the blade 3 in the receiving pocket receiving the blade opening 29 54. This proves to be particularly advantageous in the case of a blade change, in which after removal of the closure cap 11 the blade travel carriage 30 together with the blade 3 via the rear opening 10 of the housing 4 and the rear opening 24 take the travel 19. is pulled out. In particular, the reintroduction of a possibly new blade 3 together with the blade travel carriage 30 is shown by the Arrangement according to the invention of a magnet holding the blade 3 on the slide part 32 as significantly simplified.

[00123] As can further be seen from the illustrations, a reinforcing partial displacement slide 31 can be provided. In the same travel receptacle 19, this can also be shifted in the longitudinal direction L, both in the extension direction A and in the entry direction E. The reinforcing part slide 31, viewed in the extension direction A, is arranged behind the blade slide 30.

[00124] semi- The gain traversing carriage 31 serves to willing stressed linearly displacement of a reinforcing part 57, to which reinforcing member 57 in the extend _S of Verfahraufnahme 19 tellung the blade 3, in particular the voltage on the end face Öff- 25 also extended area the blade 3 is supported.

For this purpose, the reinforcing part 57 has a substantially U-shape in a cross section transverse to the longitudinal direction L, with two mutually spaced, parallel U-legs 58 and a U-web 59 connecting the U-legs The edge 60 of the blade 3 opposite the cutting edge 28 on the broad side is accommodated in the U opening, with reference to a cross section, for example according to FIG Sixths to a quarter can correspond to the width of the blade 3 viewed transversely to the longitudinal direction L.

At the end, facing the rear area of the housing 4, the reinforcing part 57 forms a sword-like arm 61. This is partially in a slot-like receptacle of the slide part 33 of the reinforcement. Traversing slide 31 taken on. The reinforcing part 57 is thus positively connected to the relevant slide part 32 and can be displaced in this manner in the longitudinal direction L.

Furthermore, the reinforcing part 57 is guided in an edge region to the side of the slide parts 32 in the process of taking 19, extends here in a completely retracted position of the reinforcing part and blade travel carriage 30, 31 at least approximately over the entire length of the clinch 3rd

When the blade 3 is extended, if necessary, in particular if a large bending stress on the blade 3 is expected in the course of the cutting work and thus the risk of blade segments 16 breaking off, the reinforcing part displacement slide 31 can also be displaced in the extension direction A after the locking has been released , wherein the end of the Ver reinforcing member 57 facing away from the carriage also emerges through the front opening 25 of the travel holder 19 and here - also visible - the edge 60 of the blade 3 encompassing the blade 3 stabilizes.

[00129] On the other hand, if a slight bendability of the extended section of the blade 3 is quite useful for the cutting process to be carried out, the reinforcing part movement slide 31 can be moved back into the entry direction E or remain in the basic position resulting from this.

As can be seen, the reinforcing part 57 can be displaced relative to the blade 3 both in the direction of extension A and in the direction of retraction E. [00131] As can furthermore be seen in particular from the cross-sectional representations in FIGS. 8 and 9, the receiving base 21 of the moving receptacle 19 which has the latching openings 47 is, if appropriate, completely closed and covered by the housing base 6. The latching can accordingly be in a hidden arrangement respectively. The latching part 35 is in a protected position within the respective slide 30 or 31.

Furthermore, a space 63, which can be exposed in the longitudinal direction L by removing the closure cap 11 and can be exposed between the receiving base 21 and the housing base 6, can be provided for accommodating, for example, further blades 3 serving for replacement.

Figures 30 to 39 show a second embodiment of a knife 1 according to the invention.

As can be seen, for example, from FIG. 34, the housing 4 can have two shell-like parts, for example an upper housing part 80 and a lower housing part 81. The two housing parts 80 and 81 can, as shown, be connected to one another via a catch for formation of the housing 4 in total. For example, one housing part can have locking pins 82, which cooperate with associated locking receptacles 83 of the other housing part _Z. Additionally or alternatively, the housing parts can also be connected via one or more screws 84.

In this embodiment, the blade 3 is alternatively on the blade slide carriage 30 detent. For this purpose, a locking projection 67 that can be displaced perpendicularly to a broad surface extension of the blade 3 is provided. This passes through a bottom-side opening 68 of the blade travel carriage 30 and is in particular in the direction of one Locked position guided in the carriage with limited stops. In addition, the

Locking projection 67 in the direction of a locking position according to FIG. 39

spring loaded. For this purpose, as also shown, a cylinder compression spring 69 can be provided, which is supported at one end on the locking projection 67 and at the other end on a ceiling section 70 of the blade movement _S slide 30.

[00136] The locking projection 67 engages through the opening 68 in the

Blade opening 29, slide 30 for fixing the blade 3 to the blade travel.

The free end face of the locking projection 67 can, as is also preferred, be roof-like, for example dome-shaped, in particular spherical dome-shaped, so that when a new blade 3 is inserted, the locking projection 67 is initially automatically shifted into an evasive position against the restoring force of the compression spring 69 and finally can fall into the blade opening 29 via the compression spring 69.

A blade change takes place in this embodiment, preferably after shifting the blade travel _S slide 30 into a front, preferably stop-limited position, so that such a blade change can take place via the front opening 9 of the knife 1. The previous one

First embodiment described a blade change takes place via the rear opening 10 after the travel path has been released by removing the closure cap 11.

Figures 40 and 41 show the knife 1 in a preferred blade change position. The blade travel carriage 30 is moved together with the blade 3 in a stop-limited foremost position. In particular, the slide part 32 can in this position against a

assigned stop surface 87 of the housing 4 occur (see FIG. 41).

In this position, the locking projection 67 cooperating with the blade 3 is assigned a button 86 provided in the lower housing part 81. With this key 86, the interlock between the blade 3 and the blade travel carriage 30 can be canceled.

[00141] The key 86 is, for example, spring-like

Arm portion 88 connected to a base portion 89. Base section 89, arm section 88 and button 86 can, as is also preferred, be made of the same material and in one piece.

The button 86 is held on the housing 4, in particular on the lower housing part 81, via the base section 89. The key 86 which projects freely over the arm section 88 is preferably located in the region of the

Arm section 88 adjustable geometric pivot axis movable. The pivot axis extends transversely to the longitudinal extent of the blade 3.

The pivoting of the key 86 takes place against one of the

Pivotal restoring force, for example of the resilient arm portion 88. There is accordingly preferably a resilient resetting speed of the button 86 in the direction of a

Basic position according to Figure 41.

The key 86 is accessible from the underside of the lower housing part 81. As a result of an actuation of the key 86, a

Swiveling displacement of the same in the direction of the facing

Locking projection 67. The facing button surface comes against the end face of the Locking protrusion 67, according to which further pivot displacement of the key 86 of the locking protrusion 67 is shifted against the force of the compression spring 69, such that the free, preferably dome-like end face of the locking protrusion 67 lies in the blade opening 29. In this position, the blade 3 can be pulled forward beyond the front opening 9, the opening edge of the blade opening 29 in cooperation with the

dome-like end face of the locking projection 67 pushes the locking projection 67 further into the release position.

In this position, the facing end face of the key 86 is preferably below a level given by the underside of the blade 3. Accordingly, the facing end face of the key 86 does not engage, preferably not partially, in the blade opening 29. This can, as well

shown, achieved by striking a key-side

Stop shoulder 90 on a housing-side counter stop shoulder 91 (see FIG. 42).

In the second exemplary embodiment, the closure cap 11 can only be used to close the space 63 for accommodating replacement blades. In an alternative or also a combinative embodiment, the

Cap 11, as in the first embodiment

Limit the carriage space to the rear.

Is the locking of the blade travel _S slide 30 and / or the reinforcing partial travel _S slide 31 of the first embodiment shown in Figures 1-29 substantially in a direction perpendicular to the longitudinal direction L and thus essentially in a depth direction of the knife 1, this locking is in the second embodiment in Mainly in a width direction B viewed transversely to the longitudinal direction L.

According to the first embodiment, also in the second exemplary embodiment, each carriage 30, 31 is essentially composed initially of a slide part 32 and a wedge slide part 34, the wedge slide part 34 being movable in the longitudinal direction L relative to the slide part 32 . Here, too, the actuation takes place via an actuation part 33.

The latching of the respective slide 30, 31 takes place according to

Cooperation of a slide-side locking part 35 with

Locking recesses 71 provided on the inside of the receiving narrow side 20 or on the inside of the narrow side 5 of the housing

Locking depressions 71 are arranged evenly distributed over the length, as in the exemplary embodiment described above, the locking openings 47 in the travel receptacle 19. Due to the possible design of the housing 4 from a metal

Material, for example magnesium, zinc or aluminum die casting, a sufficiently stable design of the locking recesses 71 can be achieved directly on the housing 4. When the housing 4 is made of metal, a separate method of taking 19, as is provided in the above-described first exemplary embodiment, can be dispensed with.

The also in the second embodiment with the actuating part 33 motion-coupled wedge slide part 34 can, in particular with respect to the blade movement _S slide 30 against the restoring force of a spring 50, for example in the form of a cylinder compression spring, relative to the slide part 32 can be moved by sliding. A neutral central position of the wedge slide part 34 can be reached via the spring 50.

Viewed in the longitudinal direction of extension, the wedge slide part 34 is in the center and, in the direction of the locking recess 71, preferably provided with a locking projection 72. Viewed in the direction of extension A, a shift is formed in front of the locking projection 72 before jump 73, as well, viewed in the direction of extension A, behind the locking projection 72, a further sliding projection 73 is preferably provided.

The locking projection 72 and the two displacements before _S jumps 73 may, with reference to a plan view according to FIG. 37, arise from a common end face of the wedge-sled part 34, which is linear in plan view. Between the locking projection 72 and the respective

Shifting projection 73 results in a pocket-like latching part receptacle 74 which is open towards the edge in the direction of the latching depressions 71. Facing the central latching projection 72, the delimitation of each latching part receptacle 74 is provided by a wedge surface 44. Both wedge surfaces 44 open into a pan-like support surface 75 of the locking projection 72.

A support of the locking part 35, which is preferably designed as a ball 76 in the second exemplary embodiment, can be reached in the locking position via the support surface 75. As an alternative to a ball 76, the locking part 35 can also be formed by a circular cylinder. In this latching position according to FIG. 37, the latching part 35 is caught between the support surface 75 of the latching projection 72 and an associated latching recess 71, so that a deflection of the ball 76 transversely to the extension direction A or transversely to

Entry direction E is prevented. The selected extended position or the retracted position of the blade 3 is locked in place. The ball 76 can also - viewed in the longitudinal direction L - be caught in a recess 77 of a slide wall 78 such that the ball 76 can only move in the width direction B. Such a shift to cancel the latching is made possible by sliding the wedge slide part 34 in the longitudinal direction L.

or in the extending direction A or retracting direction E according to the first embodiment. By means of such a sliding displacement, the catch part 35 or here the ball 76 is assigned a catch part receptacle 74 of the wedge slide part 34 (see FIG. 38). In the course of the further

Sliding displacement of the sled part 32 together with the wedge sled part 34 entrains the ball 76 via the shift before jump 73 in the direction of displacement. The ball 76 is due to the

pan-shaped design of the locking recesses 71 from the locking recess

71 pushed into the locking part receptacle 74 (see Figure 38).

In this embodiment, too, can be released by releasing the

Actuating part 33, the wedge-sled part 34 may be spring-displaced back into the central position. The latching part 35, in particular the ball 76, is preferably controlled in the width direction B to the outside. The ball 76 is pushed into the locking recess 71 via the wedge surface 44. Upon reaching the central position of the wedge slide part 34, the ball 76 is between the locking recess 71 and the support surface 75 of the locking projection

72 caught. The rest position is thus taken up again.

Starting from the long side 79, from which the

Move out in front of _S projections 73 and the locking projection 72, the displacement in front of _S projections 73 preferably protrude by a larger dimension c than the locking projection 72 (dimension d). The resulting difference dimension (dimension c minus dimension d) can be about a fifth of the largest extension dimension of the Correspond to locking part 35 in the width direction B, that is, according to the second

Embodiment, approximately one fifth of the diameter of the ball 76. In this case, charged before each displacement jump 73 in the course of a displacement _V organges the ball 76 preferably in the range of an upper, the respective slide conces- facing hemisphere.

The cantilever 61 of the reinforcement part 57 can, like the embodiment of the first embodiment, lie in a pocket-like recess in the slide part 32 of the reinforcement part travel slide 30. Additionally or alternatively, a possibly form-fitting holder can be provided on, for example, a pin of the slide part 32, for which purpose a bore-like receptacle 85 can be provided in the area of the arm 61.

[00159] The above explanations serve to explain the inventions covered by the application as a whole, which further develop the state of the art independently, at least through the following combinations of features, wherein two, more or all of these combinations of features can also be combined , namely:

A knife, which is characterized by a reinforcing part 57, on which an extended region of the blade 3 can be supported, the reinforcing part 57 being movable and releasably connected to the blade 3 relative to the knife handle 2.

[00161] A knife, which is characterized in that the latching seen by the blade travel slide 30 and / or reinforcing part travel slide 31 below the area in which the blade 3 or an imaginary extension of the blade 3 extends , is trained. [00162] A knife, which is characterized in that the latching seen by the blade travel slide 30 and / or reinforcing part travel slide 31 below the area in which the blade 3 or an imaginary extension of the blade 3 extends , is trained. [00163] A knife, which is characterized in that the blade

Traversing slide 30 has a holding magnet 56, for holding interaction with the blade 3.

[00164] A knife, which is characterized in that a locking cap 11 is arranged on the knife handle 2 on the back of the blade 3, which covers the travel path for the blade travel 30 and / or the reinforcing part.

Traversing slide 31 closes.

A knife, which is characterized in that the reinforcing member 57 is movable relative to the blade 3.

A knife, which is characterized in that the knife handle 2 is elongated with a longitudinal direction L.

A knife, which is characterized in that the blade 3 is movable in the longitudinal direction L.

A knife, which is characterized in that the reinforcing member 57 is movable in the longitudinal direction L. A knife, which is characterized in that the reinforcing member

57 for gripping an edge 60 of the blade 3 is formed. A knife, which is characterized in that the reinforcing member 57 is U-shaped in a cross section.

A knife, which is characterized in that the knife handle 2 has a travel receptacle 19 for a blade travel carriage 30 connected to the blade 3.

A knife, which is characterized in that the knife handle 2 has a travel receptacle 19 for a reinforcement part travel carriage 31 connected to the reinforcement part 57.

A knife, which is characterized in that the blade moving carriage 30 and the reinforcing member moving carriage 31 are arranged in the same movement on 19.

[00174] A knife, which is characterized in that the blade travel slide 30 and the reinforcing part travel slide 31 are arranged one behind the other in the travel receptacle 19. [00175] A knife, which is characterized in that the blade 3 is designed as a flat part with a thickness that is essentially the same in both a longitudinal and a transverse direction.

[00176] A knife, which is characterized in that the blade has 3 predetermined breaking points 17 for breaking off a used blade segment 16. [00177] A knife, which is characterized in that a slide 30 and / or in the reinforcing part slide 31 on the latching part 35 taken and in the knife handle 2 in Latching openings 47 arranged one behind the other are provided in the longitudinal direction L.

A knife, which is characterized in that the in the blade moving carriage 30 on the latching part 35 taken through the blade 3 passes through in the region of a blade opening 29.

[00179] A knife, which is characterized in that the latching part 35 received in the blade travel carriage 30 penetrates the blade 3 from a first into a second latching position both in the locked state and when the blade 3 is moved. A knife, which is characterized in that on the blade

Traversing slide 30 a trained separately to the locking part 35

Locking projection 67 is provided, which for holding the blade 3

Blade opening 29 penetrates.

A knife, which is characterized in that the locking projection 67 is loaded via a spring 69 in the locking position.

A knife, which is characterized in that the locking fixing of the blade 3 on the locking projection 67 of the blade movement _S slide 30 can be canceled via an actuatable button 86 provided on the housing side.

A knife, which is characterized in that the blade moving carriage 30 and / or the reinforcing partial moving carriage 31 has an actuating part 33 and a carriage part 32, the actuating part 33 being relative to the carriage part 32 in the longitudinal direction L is movable. A knife, which is characterized in that the actuating part 33 causes the latching part 35 to be pulled out of the latching opening 47 when acted upon in the longitudinal direction L.

[00185] A knife, which is characterized in that after the latching has been released, the actuating part 33 can be moved in the longitudinal direction L together with the slide part 32.

A knife, which is characterized in that the locking part 35 is acted upon by a spring 50 in the locking position.

A knife, which is characterized in that the spring 50 is a leaf spring or a cylindrical spring.

[00188] A knife, which is characterized in that the actuating part 33 interacts with the slide part 32 via a spring 50 acting in the longitudinal direction L.

A knife, which is characterized in that the spring 50 is supported on both ends in the slide part 32, but can be lifted off by the actuating part 33 from a respective support surface 53 when the actuating part 33 is acted upon in the longitudinal direction L.

A knife, which is characterized in that a wedge slide part 34 is provided which can be moved in the longitudinal direction L to act on the latching part 35 by means of the actuating part 33 relative to the slide part 32. A knife, which is characterized in that the locking part 35 has a free-standing transverse to the longitudinal direction L loading surface 43, for cooperation with the wedge slide part 34th

A knife, which is characterized in that the closure cap 11 is mounted transversely to the longitudinal extent on the knife handle 2.

A knife, which is characterized in that the closure cap 11 is pivotally or foldably held on the knife handle 2.

[00194] A knife, which is characterized in that the closure cap 11 has a groove 15 exposed to the outside, to provide a break-off aid when the closure cap 11 is removed.

[00195] A knife, which is characterized in that a magnet 18 is arranged in the closure cap 11, associated with the groove 15, for holding a broken-off blade segment 16.

[00196] A knife, which is characterized in that the latching part 35 can be moved for latching out or latching in transversely to a direction of displacement of the blade moving carriage 30 and / or the reinforcing member moving carriage 31.

A knife, which is characterized in that the blade travel carriage 30 and / or the reinforcement part travel carriage (31) has a width, a width direction B of the reinforcement part

Travel slide 31 and / or the blade travel slide 30 corresponds to a width of the blade 3 and that the latching part 35 in the width direction B of the clinch genetically movable slide 30 and / or the gain partially traversing _S is movable chlittens 31st

A knife, which is characterized in that the locking part 35 is a ball 76 or a cylinder. [00199] A knife, which is characterized in that the latching part 35 is a latching pin 66.

A knife, which is characterized in that the blade travel carriage 30 and / or the reinforcing part travel carriage 31 has a locking projection 72 on a longitudinal side 79, for cooperation with the locking part 35 in a locking position.

A knife, which is characterized in that the blade traversing carriage 30 and / or the reinforcing member traversing carriage 31 has a shift before jump 73, for cooperation with the locking part 35 in a release position. [00202] A knife, which is characterized in that the displacement projection 73 projects further in the width direction B than the latching projection 72.

All disclosed features are essential to the invention (by themselves, but also in combination with one another). The disclosure content of the associated / attached priority documents (copy of the prior application) is hereby also included in full in the disclosure of the application, also for the purpose of including features of these documents in claims of the present application. Characterize the subclaims with their features, even without the features of a referenced claim Independent inventive developments of the prior art, in particular to make divisional applications based on these claims. The invention specified in each claim can additionally have one or more of the features specified in the preceding description, in particular provided with reference numbers and / or in the list of reference numbers. The invention also relates to designs in which some of the features mentioned in the above description are not realized, in particular insofar as they are recognizably dispensable for the respective intended use or can be replaced by other technically equivalent means.

List of reference numbers

1 knife 29 blade opening

2 knife handle 30 blade slide

3 blade 31 reinforcement part

4 housing slide

5 Narrow side of housing 32 Sled part

6 housing base 33 operating part

7 Housing cover 34 Wedge slide part

8 slot opening 35 locking part

9 front opening 36 receiving groove

10 rear opening 37 box bottom

11 Cap 38 box wall

12 guide bar 39 opening

13 guide groove 40 opening

14 stop 41 waist section

15 groove 42 pin section

16 blade segment 43 contact surface

17 predetermined breaking line 44 wedge surface

18 magnet 45 spring

19 Travel mount 46 Fastening element, part

20 Admission narrow side 47 snap opening

21 receiving floor 48 operating area

22 Recording ceiling 49 Take-away projection

23 slot opening 50 spring

24 rear opening 51 spring mount

25 front opening 52 projection

26 Section 53 support surface

27 holder 54 holder

28 cutting edge 55 spring section Magnet 82 locking pin

Reinforcement part 83 snap-in mount

U-leg 84 screw

U-bar 85 holder

Border 86 key

Boom 87 stop surface

Recording 88 arm section

Room 89 base section

Contact surface 90 stop shoulder

Support surface 91 counter stop shoulder

latching pin

Locking projection

opening

compression spring

Ceiling section A extension direction

Locking recess B width direction

Locking projection E retraction direction

Sliding projection L longitudinal direction

Locking part recording

Support surface

Bullet

Recess

Sled wall c dimension

Long side d dimension

Housing top

Housing bottom

Claims

Expectations

1. Knife (12) with a knife handle (2) and a blade (3), the

Blade (3) can be extended and retracted with respect to the knife handle (2), characterized by a reinforcing part (57) on which an extended area of the blade (3) can be supported, the reinforcing part (57) relative to the knife handle (2 ) can be moved and detachably connected to the blade (3).

2. Knife (12) with a knife handle (2) and a blade (3), the

Blade (3) can be extended and retracted with respect to the knife handle (2), the knife (1) also having a blade movement carriage (30) and / or a reinforcing part movement carriage (31) and a latching holder for latching adjustment of different extension positions - Lunging of the blade (3) is provided, characterized in that the latching seen from the blade travel slide (30) and / or reinforcement partial slide (31) below the area in which the blade (3 ) or an imaginary extension of the blade (3) extends.

3. Knife according to claim 2, characterized in that the latching seen from the blade traversing carriage (30) and / or reinforcing partial traversing carriage (31) below the area in which the blade (3) or imaginary extension of the blade (3) extends, is formed.

4. Knife (12) with a knife handle (2) and a blade (3), the

Blade (3) is extendable and retractable with respect to the knife handle (2) or according to one of the preceding claims, characterized in that that the blade travel carriage (30) has a holding magnet (56) for holding interaction with the blade (3).

5. Knife according to one of claims 1 to 3, characterized in that the blade travel carriage (30) has a holding magnet (56) for holding interaction with the blade (3).

Knife (12) with a knife handle (2) and a blade (3), the blade (3) being extendable and retractable with respect to the knife handle (2) or according to one of the preceding claims, characterized in that on the knife handle ( 2) a locking cap (11) is arranged on the rear side of the blade (3), which closes the travel path for the blade travel slide (30) and / or the reinforcing part travel slide (31).

7. Knife according to one of the preceding claims, characterized in that the reinforcing part (57) can be moved relative to the blade (3).

8. Knife according to one of the preceding claims, characterized in that the knife handle (2) is elongated with a longitudinal direction (L).

9. Knife according to one of the preceding claims, characterized in that the blade (3) can be moved in the longitudinal direction (L)

10. Knife according to one of the preceding claims, characterized in that the vers tärkungs part (37) in the longitudinal direction (L) is movable.

11. Knife according to one of the preceding claims, characterized in that the vers tärkungs part (57) for gripping an edge (60) of the blade (3) is formed.

12. Knife according to one of the preceding claims, characterized in that the vers tärkungs part (57) is U-shaped in a cross section.

13. Knife according to one of the preceding claims, characterized in that the knife handle (2) has a movement to take (19) for a with the blade (3) connected blade movement carriage (30)

14. Knife according to one of the preceding claims, characterized in that the knife handle (2) has a travel holder (19) for a reinforcement part (57) connected to the reinforcement part travel carriage (31).

15. Knife according to one of the preceding claims, characterized in that the blade travel carriage (30) and the reinforcing part

Travel slides (31) are arranged in the same travel seat (19).

16. Knife according to one of the preceding claims, characterized in that the blade traversing carriage (30) and the reinforcing member traversing carriage (31) are arranged one behind the other in the traversing holder (19).

17. Knife according to one of the preceding claims, characterized in that the blade (3) is designed as a flat part with a thickness that is essentially the same in both a longitudinal and a transverse direction

18. Knife according to one of the preceding claims, characterized in that the blade (3) has predetermined breaking points (17) for breaking off a used blade segment (16).

19. Knife according to one of the preceding claims, characterized in that for locking a slide in the blade traversing (30) and / or in the reinforcing part traversing (31) on the latched part (35) and in the knife handle (2) latching openings (47) arranged one behind the other in the longitudinal direction (L) are provided.

20. Knife according to one of the preceding claims, characterized in that the carriage in the blade movement (30) is taken up

Locking part (35) penetrates the blade (3) in the area of a blade opening (29).

21. Knife according to one of the preceding claims, characterized in that on the blade movement slide (30) a locking projection (67) is provided which is separate from the locking part (35) and which is used for

Holder of the blade (3) passes through the blade opening (29).

22. Knife according to one of the preceding claims, characterized in that the locking projection (67) via a spring (69) in the

Rest position is loaded.

23. Knife according to one of the preceding claims, characterized in that the locking fixation of the blade (3) on the locking projection (67) of the blade movement _S slide (30) via a housing side

provided, actuatable button (86) can be canceled.

24. Knife according to one of the preceding claims, characterized in that the slide in the blade movement (30) on the latching part (35) taken up the blade (3) both in the locked state and during the movement of the blade (3). interspersed from a first into a second rest position.

25. Knife according to one of the preceding claims, characterized in that the blade movement carriage (30) and / or the reinforcement part movement carriage (31) has an actuating part (33) and a carriage part (32), wherein the actuating part (33) is movable relative to the slide part (32) in the longitudinal direction (L).

26. Knife according to one of the preceding claims, characterized in that the actuating part (33) causes the latching part (35) to be pulled out of the latching opening (47) when acted upon in the longitudinal direction (L).

27. Knife according to one of the preceding claims, characterized in that, after the latching has been released, the actuating part (33) can be moved together with the slide part (32) in the longitudinal direction (L).

28. Knife according to one of the preceding claims, characterized in that the locking part (35) is acted upon by a spring (50) in the locking position.

29. Knife according to one of the preceding claims, characterized in that the spring (50) is a leaf spring or a cylindrical spring.

30. Knife according to one of the preceding claims, characterized in that the actuating part (33) interacts with the slide part (32) via a spring (50) acting in the longitudinal direction (L).

31. Knife according to one of the preceding claims, characterized in that the spring (50) is supported at both ends in the slide part (32), but by the actuating part (33) from a respective support surface (53) when the Actuating part (33) can be lifted in the longitudinal direction (L).

32. Knife according to one of the preceding claims, characterized in that a wedge slide part (34) is provided, which acts on the latching part (35) by means of the actuating part (33) relative to the slide part (32) in Longitudinal direction (L) is movable.

33. Knife according to one of the preceding claims, characterized in that the latching part (35) has a loading surface (43) which is free-standing transversely to the longitudinal direction (L), for interaction with the wedge-slide part (34).

34. Knife according to one of the preceding claims, characterized in that the closure cap (11) is fixed to the knife handle (2) transversely to the longitudinal extent.

35. Knife according to one of the preceding claims, characterized in that the closure cap (11) on the knife handle (2) is pivotally or foldably held.

36. Knife according to one of the preceding claims, characterized in that the closure cap (11) has a groove (15) which is exposed to the outside, in order to provide a demolition aid when the closure cap (11) is removed.

37. Knife according to one of the preceding claims, characterized in that the closure cap (11) is held on the knife handle (2) such that it can be swiveled or folded, and in the closure cap (11) a magnet (18) is assigned to the groove (15) ) is arranged to hold a broken blade segment (16).

38. Knife according to one of the preceding claims, characterized in that the latching part (35) can be moved transversely to a displacement direction of the blade traversing carriage (30) and / or of the reinforcing member traversing carriage (31) for disengagement or engagement.

39. Knife according to one of the preceding claims, characterized in that the blade travel carriage (30) and / or the reinforcement part travel carriage (31) has a width, a width direction (B) of the reinforcement part travel carriage (31) and / or the blade travel carriage (30) corresponds to a width of the blade (3) and that the latching part (35) in the width direction (B) of the blade travel carriage (30) and / or the reinforcement part travel _S chlittens

(31) is movable.

40. Knife according to one of the preceding claims, characterized in that the latching part (35) is a ball (76) or a cylinder.

41. Knife according to one of the preceding claims, characterized in that the locking part (35) is a locking pin (66).

42. Knife according to one of the preceding claims, characterized in that the blade travel carriage (30) and / or the reinforcing part travel carriage (31) has a latching projection (72) on one longitudinal side (79) Cooperation with the locking part (35) in a locking position.

43. Knife according to one of the preceding claims, characterized in that the blade traversing carriage (30) and / or the reinforcing member traversing carriage (31) has a displacement projection (73) for cooperation with the latching part (35) in a release position.

44. Knife according to one of the preceding claims, characterized in that the displacement projection (73) projects further in the width direction (B) than the latching projection (72).