SCISSORS TOOL AND TOOL GROUP

Description

TECHNICAL AREA OF INVENTION

[0001] The invention relates to a tool that can be used, on the one hand, to cut a cable to a desired length and, on the other hand, to make a stripping cut in an end region of the cable's insulation sheath. The invention further relates to a tool assembly comprising tools of different configurations. STATE OF THE ART

[0002] EP 3 054 542 B1 discloses a wire stripper comprising a fixed plier section with a fixed hand lever and a fixed jaw, and a movable hand lever coupled to a movable jaw via a toggle lever mechanism. The wire stripper has cutting blades, one of which is attached to the movable hand lever and pivoted with it to generate a closing movement towards the other cutting blade. The cutting blades are used to cut the cable to the desired length. The wire stripper also has stripping blades guided on the jaws. The closing movement of the hand levers, and thus of the jaws, is divided into a cutting stroke and a stripping stroke. During the cutting stroke, the stripping blades cut into the insulation of a cable inserted into the jaws of the wire stripper on opposite sides.The stripping blades are mounted on a carriage that slides along the length of the cable inserted into the jaws of the pliers. During the stripping stroke, the movement of the carriage by the hand levers moves the stripping blades along the length of the cable in such a way that the previously at least partially separated end of the insulation sheath is stripped from the cable by the stripping blade.

[0003] US 6,526,661 B1 discloses a shearing tool comprising a first shear part and a second shear part, which are pivotably mounted to one another about a shear pivot axis via a shear bearing. In the end region facing away from the shear bearing, each shear part has a finger receptacle, which allows the shear parts to pivot in the closing direction. The shearing tool has three workpiece processing areas, in each of which a workpiece can be cut or sliced ​​by closing the shear parts. In the first workpiece processing area, located closest to the shear bearing, each of the two shear parts has a pair of cutting blades. These blades are intended to cut the insulating sheath of a ribbon cable with the closing movement of the shear parts, and a subsequent axial movement is intended to remove the cut insulation from the ribbon cable.In a central, second workpiece processing area, one scissor blade forms a closed receptacle for a cable with a circular cross-section. The other scissor blade in this area carries a cutting blade that, as the scissor blades close, cuts the insulation of the cable within the receptacle. By rotating the scissor tool around the cable, the insulation can be cut circumferentially, and with a subsequent axial movement, the cut end of the insulation can be removed. Finally, in the outer, third workpiece processing area, the scissor tool has an open cutting recess in one scissor blade into which a cable can be inserted, as well as a cutting blade supported by the other scissor blade.The closing motion of the scissor blades allows the cable inserted in the cutting recess to be cut or severed by the cutting blade. The cutting blade of the second workpiece processing area and a cutting blade of the third workpiece processing area are formed from a common blade body. The blade body is pivotally mounted on the corresponding scissor blade section about a pivot axis. Away from the pivot bearing, the back of the cutting blade rests against a knurled screw. By adjusting the knurled screw, the cutting depth of the cutting blade in the second workpiece processing area and the cutting blade in the third workpiece processing area can be set.

[0004] Further state of the art is known from US 6 138 362 A, US 2019 / 210206 A1 and GB 2 181 687 A. TASK OF INVENTION

[0005] The present invention is based on the objective of proposing a tool by means of which a) both cutting a cable b) and making a stripping cut in an end area of ​​an insulating sheath of the cable The invention aims to provide a tool group with at least two different tool embodiments that are improved with regard to manufacturing costs, materials that can be used, manufacturing processes for the components, factory assembly, the number of components required, size, ease of use, and / or size and visual design. Furthermore, the invention aims to propose a tool group with at least two different tool embodiments that are improved with regard to the manufacturing and storage costs of the components. SOLUTION

[0006] The object of the invention is achieved according to the invention by the features of the independent claims. Further preferred embodiments of the invention can be found in the dependent claims. DESCRIPTION OF THE INVENTION

[0007] According to the invention, it is first proposed that the tool for cutting and making a stripping cut is designed not as a pliers tool, but rather as a scissor tool. The scissor tool has a first scissor part and a second scissor part. The two scissor parts are mounted to each other via a scissor bearing, so that the scissor parts can be pivoted relative to each other about a pivot axis defined by the scissor bearing.

[0008] Each of the two scissor parts has a finger receptacle, allowing the user to manually pivot the scissor parts into a closing direction by inserting at least one finger, in particular a thumb and an index or middle finger, into a finger receptacle. The finger receptacle can then exert closing forces on the scissor parts. The finger receptacle can be open at the edges. Preferably, however, the finger receptacles are designed with closed edges (for example, as a circular through-hole, an elliptical through-hole, or any other shaped closed-edge recess in the scissor parts).

[0009] Each scissor blade has a cutting blade. The cutting blades are moved towards each other by pivoting the scissor blades in a closing direction, which is achieved by the user applying finger pressure in the finger grip. If a cable is located between the cutting blades, the cable can be cut in this way. Thus, the scissor tool fulfills its primary function: enabling the cutting of a cable.

[0010] According to the invention, an actuating element is integrated into the finger receptacle of the first scissor section. In addition to the cutting blades, the scissor tool has a wire stripping blade. The wire stripping blade is movably guided on the first scissor section. The invention proposes that the actuating element integrated into the finger receptacle is connected to the wire stripping blade via a drive connection. When the user actuates the actuating element, the wire stripping blade can be moved into a desired position. Thus, within the scope of the invention, the finger receptacle of the first scissor section is used multifunctionally, since, on the one hand, the closing movement of the cutting blades to sever the cable can be effected via this finger receptacle, and on the other hand, the wire stripping blade can be moved into a desired position via the actuating element integrated into the finger receptacle.

[0011] Within the scope of the invention, any drive connection, in particular a geared connection, a lever connection or other connection, possibly also with a reduction or over-reduction of forces and movement, can be configured. Preferably, a rigid connection is used as the drive connection, so that the actuating element on the one hand and the wire stripping blade on the other are rigidly connected to each other.

[0012] Preferably, the finger receptacle of the first scissor section has two separate circumferential regions offset from one another. When the user's two fingers are inserted into the two finger receptacles of the scissor sections and the scissor sections are actuated to initiate the closing movement of the cutting blades, one finger acts on a first circumferential region of the finger receptacle of the first scissor section. The resulting finger closing forces are then oriented circumferentially around the scissor bearing, such that the first circumferential region has a surface normal that is approximately oriented circumferentially around the scissor bearing. To prevent unintentional actuation of the actuating element during this manually initiated movement of the cutting blades, the actuating element is arranged outside this first circumferential region, namely in a second circumferential region.The second circumferential region, in which the actuating element is arranged, can then be located in any other circumferential region. For example, it is possible that this second circumferential region is located on the opposite side to the first circumferential region, or that the surface normal of the second circumferential region is oriented approximately in the direction of the scissor bearing, whereby deviations of + / - 30°, + / - 20° or + / - 15° of the surface normal of the second circumferential region relative to the connection to the pivot bearing are also possible.

[0013] In another aspect of the invention, the shearing tool has a spring mechanism that applies force to the stripping blades in a starting position. This starting position can be an insertion position, which means that to generate cutting forces, the user must apply forces to the actuating element that are oriented opposite to the action of the spring mechanism. Actuating the actuating element then increases the force applied to the spring mechanism. Preferably, however, the stripping blade is applied to a cutting position by the spring mechanism. In this way, the spring mechanism automatically generates the force with which the stripping blade is pressed against the insulation sheath of the cable, thus causing it to cut.By designing the spring stiffness and length of the spring mechanism, the force characteristic for pressing the stripping blade against the insulation sheath can be structurally determined. However, to allow the cable to be inserted into the working area of ​​the stripping blade, the stripping blade must then be moved from the cutting position to an insertion position by increasing the force exerted on the spring mechanism. This can be achieved by the user actuating the operating element.

[0014] Another way to influence the contact characteristics of the stripping blade against the insulation sheath is by pre-tensioning the spring mechanism. This allows, for example, the pre-tension to define a baseline spring force in the insertion position. Furthermore, the spring stiffness can be adjusted to determine the increase in spring force from this baseline as the stripping blade moves from the insertion to the cutting position. This enables adaptation to different diameters or insulation thicknesses of the cable being stripped, and / or different insulation sheath materials that require varying contact pressures from the stripping blade.

[0015] Within the scope of the invention, "cutting" is understood to mean cutting at least a partial circumference of the insulation sheath of the cable, without the process carried out with the shearing tool necessarily having to include a pull-off stroke in which the end piece cut by means of the stripping knife is automatically pulled off.

[0016] In one embodiment of the shearing tool according to the invention, the actuating element projects into the finger receptacle of the first shear part. Preferably, the maximum movement of the actuating element (and thus of the stripping blade), which can be brought about by means of the finger in the finger receptacle, is limited when the actuating element is moved into an insertion position. In this insertion position, the actuating element and a limit of the finger receptacle of the first shear part are flush with each other. In other words, the extent to which the actuating element projects into the finger receptacle of the first shear part determines the maximum stroke of the actuating element up to the insertion position.

[0017] Any materials and / or manufacturing processes can be used for the design of the aforementioned components. The spring assembly, for example, can be formed from one or more metallic springs of any design (in particular, a leaf spring, a torsion spring, a coil spring configured as a tension or compression spring, etc.). In a particular embodiment of the invention, the actuating element, a wire stripping knife holder, and the spring assembly are manufactured in one piece. In this case, the spring assembly is formed from an elastic material section. Within the scope of the invention, for example, the actuating element, the wire stripping knife holder, and the spring assembly can be manufactured in one piece from plastic, using an injection molding process or an additive manufacturing process, in particular 3D printing.To give just one example, the actuating element and a stripping knife holder can be formed from a block- or plate-like cutting base body, from which at least one arbitrarily shaped spring arm extends integrally, forming the spring assembly. In this case, the spring stiffness of the spring assembly results from the modulus of elasticity of the material used and the geometry and cross-section of the spring arm, in particular the length of the spring arm and its area modulus of inertia.

[0018] The invention proposes a further configuration in which (in contrast to a conventional pair of scissors) the first scissor part forms a housing with an interior space. This interior space can then be used to support, guide, and / or arrange at least one (particularly moving) component of the scissor tool. For example, a section of the actuating element, the stripping blade holder, the spring assembly, and / or a portion of the stripping blade can be supported, guided, and / or arranged within the interior space. The scissor bearing or a scissor bearing pin can also extend through the interior space. Furthermore, the cutting blades can be arranged at least partially within the interior space, and can then also move out of the interior space during the closing stroke. Preferably, the housing comprises two housing parts, which, for example, have a central or off-center dividing plane.It is possible that the housing has a housing base body that is closed with a housing cover.

[0019] For the aforementioned design options, the following alternative or cumulative design possibilities exist: It is possible that the two housing parts, in particular the housing cover and the housing base, are connected to each other (also or exclusively) by a snap-fit ​​connection, a locking mechanism, or a clip. To give just one example, a snap-fit ​​projection of one housing part can engage with a snap-fit ​​recess of the other housing part. The snap-fit ​​action can be influenced by the elasticity of the support for the snap-fit ​​projection and / or the snap-fit ​​recess, as well as by the angle of inclination and the design of the contact surfaces between the snap-fit ​​projection and the snap-fit ​​recess. In the simplest case, at least one housing part has snap hooks that engage with corresponding snap recesses of the other housing part. The aforementioned connections may be the only connections between the two housing parts.It is also possible that the housing parts are additionally screwed together, glued, or welded. A seal between the housing parts is also possible. The housing parts, in particular the housing cover and / or the housing base, may have a projection, a rib, a recess, or a groove. The projection, rib, recess, or groove can guide a component (for example, the actuator and / or the stripping knife holder) that moves via the stroke of the actuating element and / or the stroke of the cutting blades. It is also possible that the projection, rib, recess, or groove provides a stop for the movement of a component (in particular, the actuator and / or the stripping knife holder).To give just one further example, the projection, rib, recess, or groove can serve to support a spring base point of the spring assembly. It is also possible that a projection, rib, recess, or groove serves to receive or support a fixed cutting blade and / or secures a wire stripper blade against protrusion from a recess in a wire stripper blade holder in the opposite direction of installation. Alternatively or cumulatively, the projection, rib, recess, or groove can also provide a cable support surface that supports a cable to be cut and then stripped on the side facing away from the wire stripper blade. This cable support surface can also incorporate a support or engagement rib or lip, or a wire stripper blade. The housing cover and / or the housing body may be made of plastic.

[0020] In a particular embodiment of the invention, the first scissor part (here, for example, a housing part) and / or the second scissor part has a receptacle. The associated cutting blade can be arranged and supported in the receptacle. This will be explained by the following example, which does not limit the invention: The receptacle may be designed as a recess whose depth and contour correspond to the thickness and shape of the cutting blade. When the cutting blade is then inserted into this receptacle, it is positively engaged and supported in the plane transverse to the insertion direction. Preferably, the cutting blade is inserted into the receptacle in an insertion direction that is oriented parallel to the pivot axis of the scissors. After insertion, the cutting blade can be flush with a top surface of the scissor part, recessed inwards relative to it, or projecting outwards.

[0021] In another aspect of the invention, the shearing tool includes (exclusively or at least) a screw. This screw defines the pivot axis of the shears. The shank of the screw can form the bearing pin of the shears. Alternatively or cumulatively, the screw can be used to determine the contact pressure between the shear parts, depending on the tightening torque. In this way, the screw determines the friction that counteracts pivoting of the shear parts around the bearing, allowing the required operating forces and the frictional force securing the position of the shear parts to be adjusted via the screw. Alternatively or cumulatively, the screw can also be used to determine the cutting clearance of the blades. Thus, the screw can be used for multiple purposes.It is also possible that, in addition to at least one of the aforementioned functions, the screw also ensures the securing of housing parts or components of a sub-assembly unit to one another.

[0022] A further aspect of the invention focuses on simplifying the assembly of the scissor tool. In this regard, it is proposed that (preferably all) components of the scissor tool be joined in the same assembly direction, with this assembly direction being oriented parallel to the scissor pivot axis. This design enables automated assembly using a robot, which only needs to join the parts in a single assembly direction. Handling and rotating components or a sub-assembly unit during assembly is therefore unnecessary in this case.

[0023] It is possible that in the shearing tool, the cutting edge of the stripping knife and a cable support surface, between which the cable is clamped, are oriented parallel to each other. The cable support surface is fixed to the first part of the pliers and may also have a cutting edge or a support lip or rib. In a particular embodiment of the invention, the cutting edge of the stripping knife is inclined at an acute angle to the cable support surface, this acute angle being, for example, 1° to 20°, 2° to 15°, or 3° to 10°. Such an inclination of the cutting edge of the stripping knife to the cable support surface has proven particularly advantageous when the cable is rotated around its entire circumference to cut the insulation sheath, allowing the cutting edge to cut the entire circumference of the insulation sheath.Depending on the direction of rotation of the cable relative to the cutting edge and thus the scissor tool, different cutting depths of the cutting edge of the wire stripping knife into the insulation sheath of the cable may even result.

[0024] It is possible that components of the shearing tool are made of plastic, which may also be a bio-based plastic, i.e., a biodegradable plastic. The components that can be made of plastic could include, for example, the housing parts, the actuating element, the stripping blade holder, the spring assembly, and the cutting base of the second shear part. Preferably, all components except for the at least one stripping blade, the cutting blades, and the screw are made of plastic, while the stripping blade, the cutting blades, and the screw can then be made of metal.

[0025] Another solution to the problem underlying the invention presents a tool group. This tool group comprises at least one scissor tool and at least one pair of pliers. The scissor tool and the pliers tool are used for different applications. Such a tool group can, for example, be manufactured and offered by a single manufacturer, with customers then able to purchase only scissor tools, only pliers tools, or both tools from that manufacturer. It is also possible for such a tool group to be kept in stock and offered by a commercial intermediary. Alternatively, it is possible for such a tool group to be kept and used by the consumer.

[0026] In the tool group according to the invention, the shear tools are designed as previously explained. The invention proposes that the shear tool and the plier tool of the tool group have identical cutting blades. In this case, the cutting blades of the shear tool are actuated by pivoting the shear parts of the shear tool, while the cutting blades of the plier tool are actuated by pivoting the plier hand levers of the plier tool. For example, the plier tool can be designed as described in the introduction to EP 3 054 542 B1 and further explained in detail in this publication. By equipping the shear tool and the plier tool with identical cutting blades, manufacturing costs can be reduced due to the increased number of identical parts.Since the cutting blades are potentially wear parts, the customer's inventory effort for replacing cutting blades for the shear tool and the pliers tool is reduced, as one and the same cutting blade can be kept for both different tools. The pliers tool can offer a wider range of functions compared to the shear tool. If it is a pliers tool according to EP 3 054 542 B1, it ensures, on the one hand, the cutting of a cable using a cutting blade and, on the other hand, the execution of a cutting stroke and a stripping stroke using the stripping blades.

[0027] Advantageous further developments of the invention result from the patent claims, the description and the drawings.

[0028] The advantages of features and combinations of features mentioned in the description are merely exemplary and can have an effect alternatively or cumulatively, without the advantages necessarily having to be achieved by embodiments according to the invention.

[0029] Regarding the disclosure content—not the scope of protection—of the original application documents and the patent, the following applies: Further features can be derived from the drawings—in particular, the geometries depicted and the relative dimensions of several components to one another, as well as their relative arrangement and functional connection. The combination of features from different embodiments of the invention or from features of different claims is also possible, deviating from the chosen cross-references of the claims, and is hereby encouraged. This also applies to features that are illustrated in separate drawings or mentioned in their description. These features can also be combined with features from different claims.Likewise, features listed in the patent claims may be omitted for further embodiments of the invention, but this does not apply to the independent patent claims of the granted patent.

[0030] The features mentioned in the claims and the description are to be understood, with regard to their number, as meaning that exactly that number or a greater number than the stated number is present, without the need for the explicit use of the adverb "at least". Thus, for example, if an element is mentioned, this is to be understood as meaning that exactly one element, two elements, or more elements are present. The features listed in the claims may be supplemented by further features or may be the only features that the subject matter of the respective claim possesses.

[0031] The reference numerals contained in the patent claims do not constitute a limitation of the scope of the subject matter protected by the patent claims. They merely serve the purpose of making the patent claims easier to understand. BRIEF DESCRIPTION OF THE FIGURES

[0032] The invention will now be further explained and described with reference to preferred embodiments shown in the figures. Fig. 1 shows a shearing tool in a rear view, with the shear parts and cutting blades in an insertion position and an actuating element and a stripping cutting blade in an insertion position as a result of manual actuation. Fig. 2 The scissor tool is shown according to Fig. 1 View from the front with the housing cover removed. Fig. 3 The scissor tool is shown according to Figure 1 and 2in a rear view, wherein the scissor parts and the cutting blades are in a cutting position and the actuating element and the stripping cutting blade are in a cutting position. Fig. 4 The scissor tool is shown according to Fig. 3 View from the front with the housing cover removed. Figs. 5 and 6 show exploded views of the shearing tool according to Figures 1 to 4 . Fig. 7 shows a detailed drawing of a housing cover in an internal view. Fig. 8 shows a cutaway view of the shearing tool according to Figures 1 to 6 during a cut through the housing cover. Fig. 9 shows a cutaway view of the shearing tool according to Figures 1 to 6 during cutting through a cutting base body of the second scissor part and the actuating element, the stripping knife holder and the spring device. Fig. 10shows a spatial representation of the housing body with ribs, recesses and locking hooks formed on it. Fig. 11 shows a front view of a pliers tool. Fig. 12 The pliers tool shows according to Fig. 11 in an exploded view. FIGURE DESCRIPTION

[0033] The figures show a scissor tool 1. The scissor tool 1 has three components or assemblies that are movable relative to each other during operation, namely a first scissor part 2, a second scissor part 3, which are pivotable via a pivot bearing 4 about a vertical distance to the drawing plane according to Figs. 1 to 4 oriented scissor pivot axis mounted and pivotable relative to each other in a cutting stroke, as well as a cutting unit 6 which is movable relative to the first scissor part 2 in a cutting stroke.

[0034] In the exploded views according to Fig. 6It can be seen that the scissor tool 1 consists exclusively of the following components: a housing cover 7, a screw 8, two cutting blades 9, 10, the cutting unit 6, which is formed in one piece here, a stripping cutting blade 11 and a housing base body 12.

[0035] The separating blades 9, 10 are L-shaped with two angled legs 13, 14, wherein in the figures the legs 13, 14 of the separating blade 9 are marked with the suffix "a", while the legs 13, 14 of the separating blade 10 are marked with the suffix "b" (see Fig. 6 ). In the transition area of ​​the legs 13, 14 there is a bore 15, which is also marked with the suffix "a" or "b".

[0036] The first scissor part 2 has a lever-like base body 16, which includes lever parts 17, 18. A cylindrical extension 19 is arranged in the transition area of ​​the lever parts 17, 18. The diameter of the extension 19 corresponds (with a fit or clearance) to the diameter of the bores 15 of the separating blades 9, 10, so that the separating blades 9, 10 can be placed onto the extension 19.

[0037] The extension 19 is surrounded by a recording 20 (see Fig. 5The depth of the receptacle 20 preferably corresponds to the thickness of the cutting blade 10. Furthermore, the outer contour of the receptacle 20 corresponds to the outer contour of the cutting blade 10. Thus, by placing the cutting blade 10 onto the extension 19, the cutting blade 10 can be inserted into the receptacle 20, thereby being positively engaged in the receptacle 20. The lever element 17 supports the leg 13a forming the cutting edge of the cutting blade 10 both circumferentially around the pivot axis 5 of the scissor mechanism and in the support direction against the base of the receptacle 20.

[0038] When the separating blades 9, 10 are mounted on the extension 19, they are held in place on the base body 16 by the screw 8, with the separating blades 9, 10 being trapped between the head of the screw 8 and the base body 16. A shank of the screw 8 extends through the bores 15a, 15b of the separating blades 9, 10. In the end region of the screw 8, which protrudes from the separating blades 9, 10 and faces away from the head, the thread of the screw 8 engages with a bore 24 in the extension 19. If the extension 19 is made of plastic, the screw 8 can be self-tapping into the cylindrical bore 24 of the pin 19. The tightening torque of the screw 8 determines, on the one hand, the cutting clearance of the separating blades 9, 10 and, on the other hand, the friction between the separating blades 9, 10 during the movement of the scissor parts 2, 3. By screwing in the screw 8, the base body 16 forms an assembly unit with the separating blades 9, 10.This mounting unit is pivotably connected to the housing cover 7 by the head of the screw 8 fitting precisely into a bore 22 of the housing cover 7.

[0039] As in Fig. 6 and 7 As can be seen, the housing cover 7 has a receptacle 21 whose depth corresponds to the thickness of the separating blade 9 and whose outer contour is adapted to the outer contour of the separating blade 9. Upon insertion, the separating blade 9 is positively engaged in the receptacle 21. As a result of the positive engagement of the separating blade 10 in the receptacle 20 of the base body 16 and of the separating blade 9 in the receptacle 21 of the housing cover 7, a relative pivoting of the first shear section 2 and the second shear section 3 leads to a relative pivoting of the separating blades 9, 10, thus allowing the separating blades 9, 10 to be moved from an insertion position to a cutting position (and vice versa).

[0040] The base body 16 also has a projection 23 on the side facing the housing base body 12, which (with a clearance or a fit) is received in a bore 26 of the housing base body 12.

[0041] The cutting unit 6 has a one-piece plastic cutting base body 27. The cutting base body 27 has a tongue-shaped actuating element 28, a stripping knife holder 29, and a spring assembly 30, which here has two spring arms 31, 32. The spring arms 31, 32 are each swan-neck, V-, U-, or Z-shaped and allow for deflection due to their inherent elasticity, whereby the spring arms 31, 32 are subjected to bending stress. The spring arms 31, 32 each have a projection 33, 34 or a hook-shaped end region in the end region facing away from the stripping knife holder 29.

[0042] The stripping knife holder 29 has an interior 35 into which the stripping knife 11 can be inserted via a lateral mounting opening 36. On the side opposite the mounting opening 36, the stripping knife holder 29 forms a stop recess 37. Furthermore, a projection 38 extends from the stripping knife holder 29 parallel to an actuating axis 40 of the actuating element 28.

[0043] As especially in Fig. 2 , 4 , 5 and 9As can be seen, the housing body 12 forms ribs 39, the height of which corresponds approximately to the thickness of the cutting body 27. The ribs 39 are oriented parallel to the actuating axis 40 of the actuating element 28. The side surfaces of the cutting body 27 are guided slidably on the ribs 39, so that the cutting body 27, and thus the actuating element 28 and the stripping blade 11, can move exclusively in the direction of the actuating axis 40. Furthermore, the ribs 39 form a recess in which the extension 38 of the cutting body 27 is guided. It is possible that the end face of the extension 38 is pressed against a stop formed by the rib 39 due to a preload of the spring assembly 30, thereby defining the end position of the movement of the stripping blade 11 and the actuating element 28.Furthermore, the rib 39 can form a process 41 which forms a stop 42 which comes into contact with the boundaries of the deflection recess 37 to limit the stroke of the cutting base body 27.

[0044] A rib 39 or a projection further forms a cable support surface 43, onto which the cable can be placed in the insertion position of the cutting unit 6, whereby the cable is clamped between the cable support surface 43 and the cutting edge of the stripping knife 41 as a result of the spring force of the spring device 30.

[0045] The ribs 39 can form receiving recesses 44, 45 in which the projections 33, 34 of the spring arms 31, 32 can be received to secure the spring base points of the spring arms 31, 32 to the housing base body 12.

[0046] The scissor tool 1 is assembled as follows: First, the cutting blade 10 is placed on the extension 19 of the base body 16 and inserted into the receptacle 20 of the base body 16.

[0047] Following this, the separating knife 9 is placed on the extension 19 of the base body 16.

[0048] Finally, the screw 8 is inserted through the bores 15a, 15b and screwed into the bore 24 of the extension 19.

[0049] Following this, the assembly unit formed in this way is inserted into the bore 26 of the housing base body 12 with the extension 23.

[0050] In parallel, another partial assembly unit can be formed by inserting the stripping knife 11 into the interior 35 of the stripping knife holder 19 via the mounting opening 36.

[0051] This partial assembly can then be inserted into the housing body 12 by supporting the free spring bases of the spring arms 31, 32 against the ribs 39. This is achieved by inserting the projections 33, 34 into the receiving recesses 44, 45. Simultaneously, the section of the stripping knife holder 29 is inserted between the parallel guiding ribs 39, whereby the stop 42 enters the stop recess 37 and the extension 38 finds a guiding recess between parallel sections of the ribs. The actuating element 28 also finds a guiding recess between two parallel sections of the ribs 39. Once the stripping knife holder 29 is inserted between the ribs 39 in this manner, the stripping knife 11 cannot exit the mounting opening 36, as this is closed by the rib 39 in the disassembly direction.

[0052] In the next step, the housing cover 7 can be placed onto the housing base 12, thus forming a closed housing 46. Inside the interior 47 of this housing are the base body 16 with the cutting blades 9, 10 and the cutting base body 27 with the spring assembly 30, the stripping blade holder 29, the actuating element 28, and the stripping blade 11. The housing cover 7 and the housing base 12 are connected by elastic locking hooks 48 distributed around the circumference of the housing base 12, which engage in locking recesses 49 of the housing cover 7. Preferably, two locking hooks 48 and locking recesses 49 are arranged directly adjacent to a cutting blade opening 57 formed by the cutting blades 9, 10, into which the cable can be inserted for cutting.

[0053] The assembly direction for the aforementioned assembly steps is generally oriented parallel to the scissor pivot axis 5. The stripping blade 11 is inserted into the stripping blade holder 29 vertically to the actuation axis 40.

[0054] The lever part 18 of the base body 16 forms a finger receptacle 50 in its outer end region, which is designed here as a circular bore. The housing 46 also forms a finger receptacle 51. For this purpose, the housing cover 7 and the housing base body 12 have aligned through-holes 52, 53.

[0055] In an insertion position of the stripping knife 11 according to Fig. 1, in which the actuating element 28 in the finger receptacle 51 is acted upon at its end face by a finger force 54, the actuating element 28 and thus also the stripping knife holder 29 with the stripping knife 11 is pressed into the interior 47 of the housing 46 under the influence of the spring device 30, wherein preferably the end face is formed flush with the finger receptacle 51.

[0056] The housing cover 7 and the housing base body 12 have aligned insertion openings 55a, 55b, 56a, 56b, wherein for the illustrated embodiment there is one pair of aligned insertion openings 55a, 55b and 56a, 56b.

[0057] Through the insertion openings 55, 56, the space between the cable mounting surface 43 and the cutting edge of the stripping knife 11 is accessible in the insertion position, allowing a cable to be inserted which, depending on the length of the end section of the insulation sheath to be removed, may also protrude from the housing 46 with a free end section. If the cable mounting surface 43 and the cutting edge of the stripping knife 11 are inclined at an acute angle to each other, the pairs of insertion openings 55a, 55b and 56a, 56b can be used to create cuts in cables with different diameters or different insulation sheath hardnesses.

[0058] The scissor tool 1 can be used as follows: If the scissor parts 2, 3 are in the open position according to Fig. 1A cable can be inserted into the cutting jaw 57 formed between the cutting blades 9, 10. When the second scissor part 3 pivots in a closing direction 58, the cutting blades 9, 10 move towards each other and close, thus cutting the cable. During the generation of the closing movement, two fingers, in particular a thumb and an index finger or a middle finger, are located in the finger receptacles 50, 51. The finger arranged in the finger receptacle 51 then generates a closing force in a first circumferential region 59 of the finger receptacle 51, the surface normal of which is oriented approximately perpendicular to the connecting axis with the pivot axis 5 or in the circumferential direction of the pivot axis 5.

[0059] If, on the other hand, the cable is to be cut by making incisions in the insulation sheath, the user inserts a finger, in particular the thumb, into the finger receptacle 51, while the rest of the hand grasps the housing 46. With the finger positioned in the finger receptacle 51, the finger force 54 can then be applied to the actuating element 28, thereby moving the stripping knife holder 29 and the stripping knife 11 arranged therein from the cutting position according to Fig. 3 into the insertion position according to Fig. 1The cable is transferred. It is then possible to insert the end section of the cable into the respective insertion opening 55, 56. When the finger force 54 is released, the spring device 30 presses the stripping knife holder 29 with the stripping knife 11 against the sheath surface of the cable, which is supported on the opposite side by the cable mounting surface 43, thus creating a partial circumferential cut in the insulation sheath. If more than a partial circumferential area of ​​the insulation sheath is to be cut, the user can also generate a relative rotational movement between the cable and the housing 46, which moves the cutting edge of the stripping knife 11 along the circumference of the insulation sheath. It is also possible for a rotation of more than 360° to occur if the cutting depth of the stripping knife 11 is to be successively increased.While not strictly necessary, at the end of the cutting process the shearing tool 1 can also move relative to the cable in the direction of the cable's longitudinal axis, allowing the previously separated end piece of the insulation sheath to be stripped off by the stripping knife 11. If the insulation sheath has not been cut along its entire circumference beforehand, tearing can occur in the remaining area.

[0060] In the finger receptacle 51, the actuating end face of the actuating element 28 is arranged in a second circumferential region 60. The first circumferential region 59 and the second circumferential region 60 are offset from each other. For example, the surface normal of the second circumferential region 60 may be inclined in the direction of the connecting axis with the scissor pivot axis 5 or at an angle of + / - 30° to it.

[0061] It is possible that the separating blades 9, 10, in the separating position, are in contact with each other with their cutting edges (or form a minimal gap). However, it is also possible that the separating blades 9, 10 are arranged overlapping in an end position, so that the cutting edges of the separating blades 9, 10 pass each other when closing, creating a so-called bypass cut. Preferably, the separating blades 9, 10 are designed as identical parts.

[0062] It is also possible that the cable mounting surface 43 also has a stripping cutting blade or a plastic lip or rib. A plastic lip or rib can provide additional guidance when rotating the cable relative to the shearing tool 1, as this plastic lip or rib engages in a previously cut area of ​​the insulation sheath.

[0063] It is possible that the base body 16 has a finger recess 61 adjacent to the finger receptacle 50, against which another finger of the user can be supported. For example, it is possible that for the operation of the separating blades 9, 10, the thumb is positioned in the finger receptacle 50, the index finger is supported in the finger recess 61, and the middle finger is positioned in the finger receptacle 51.

[0064] It is possible that the cover is also closed in the area of ​​bore 22. It is also possible that screw 8 is tightened through bore 22 of the housing cover 7 after the housing cover 46 has already been closed.

[0065] It is also possible that the extension 38 and its interaction with the ribs 39 prevent the entry of cut-off remnants of the insulation sheath into the interior 47 of the housing 46.

[0066] In the illustrated embodiment, the housing 46 is divided off-center. In this case, the ribs 39 are formed exclusively or primarily on the housing base 12, while the housing cover 7 has no ribs at all. However, any other division of the housing 46 is also possible.

[0067] The base body 16 of the second scissor part 3 enters the interior 47 through a scissor part opening 62 of the housing 46. The base body 16 then extends through the interior 47 and the base body 16 and / or the associated separating blade 10 then exits the interior 47 in the area of ​​the separating blade mouth 57 through a separating blade opening 63.

[0068] Fig. 11 and 12Figure 64 shows a plier tool. A cutting movement of the cutting blades 9, 10 of the plier tool 64 can be effected via plier hand levers 65, 66. Furthermore, the stroke of the plier hand levers 65, 66 can also be used to press stripping blades against an insulation sheath in a cutting stroke and, in a subsequent pulling stroke, to pull off the cut end piece by moving a slide on which the stripping blades are held. For further design features and functions of the plier tool 64, reference is made to publication EP 3 054 542 B1, the relevant content of which is incorporated into the present invention. Preferably, identical pairs of cutting blades 9, 10 are used for the shear tool 1 and the plier tool 64, whereby (as already explained) identical cutting blades can also be used in the pairs of cutting blades 9, 10.

[0069] It is possible that with the scissor tool 1 according to Figs. 1 to 10 After cutting the insulation sheath, the cut or removed end piece of the insulation sheath is immediately pulled off using the stripping knife 11. However, it is also possible for the cut or removed end piece of the insulation sheath to remain in its original position on the conductor or to be only partially pulled off (and possibly torn off), in which case the end piece can protect the conductor, for example, against fraying of the strands of a cable. The end piece can then be removed later, when a connection is to be made to the end of the conductor that has been freed from the end piece. REFERENCE MARK LIST

[0070] 1 Scissor tool 2 First scissor part 3 Second scissor part 4 Scissor bearing 5 Scissor pivot axis 6 Cutting unit 7 Housing cover 8 Screw 9 Cutting blade 10 Cutting blade 11 Stripping blade 12 Housing base 13 Leg 14 Leg 15 Bore 16 Base body 17 Lever part 18 Lever part 19 Extension 20 Mount 21 Mount 22 Bore 23 Extension 24 Bore 26 Bore 27 Cutting base body 28 Actuating element 29 Stripping blade holder 30 Spring assembly 31 Spring arm 32 Spring arm 33 Projection 34 Projection 35 Interior 36 Mounting opening 37 Stop recess 38 Extension 39 Rib 40 Actuating axis 41 Extension 42 Stop 43 Cable tray area 44 Recess 45 Recess 46 Housing 47 Interior 48 Detent hook 49 Detent recess 50 Finger receptacle 51 Finger receptacle 52 Through hole 53 Through hole 54 Finger force 55 Insertion opening 56 Insertion opening 57 Cutting blade jaw 58 Closing direction 59 First circumferential area 60 Second circumferential area 61 Finger recess 62 Scissor section opening 63 Cutting blade opening 64 Pliers tool65-pliers hand lever 66-pliers hand lever

Claims

1. Scissors tool (1) comprising a first scissors part (2) and a second scissors part (3), which a) are mounted on each other via a scissors joint (4) for being pivoted about a scissors pivot axis (5), b) each comprise a finger accommodation (50, 51) by means of which it is possible to induce a pivoting movement the scissors parts (2, 3) in a closing direction (58), and c) each comprise a separating cutting blade (9, 10), which are moved towards each other with a pivoting movement of the scissors parts (2, 3) in the closing direction (58), d) a stripping blade (11) being provided and e) the stripping blade (11) being movably guided on the first scissors part (2), characterized in that f) an actuating element (28) for the stripping blade (11) is integrated into the finger accommodation (51) of the first scissors part (2), wherein the actuating element (28) is connected to the stripping blade (11) via a drive connection, the drive connection preferably being a rigid connection.

2. Scissors tool (1) of claim 1, wherein the stripping blade (11) is biased by a spring device (30) towards an incising position and the stripping blade (11) can be moved from the incising position into an insertion position by actuation of the actuating element (28) against the bias by the spring device (30), wherein preferably the spring device (30) is pretensioned in the incising position when no finger force (54) biases the actuating element (28).

3. Scissors tool (28) of claim 1 or 2, wherein the actuating element (28) projects into the finger accommodation (51) of the first scissors part (2), wherein preferably the maximum movements of the actuating element (28) and of the stripping blade (11) are limited by the movement of the actuating element (28) into an insertion position, in which the actuating element (28) and a limitation of the finger accommodation (51) of the first scissors part (2) are arranged flush with one another.

4. Scissors tool (1) of one of the preceding claims, wherein the actuating element (28), a stripping blade holder (29) and the or a spring device (30) are manufactured in one single piece, in particular from plastic, and wherein the spring device (30) is formed by a flexible material portion.

5. Scissors tool (1) of one of the preceding claims, wherein the first scissors part (2) comprises a housing (46) with an inner chamber (47), in which at least one component of the scissors tool (1) is supported, guided and / or arranged, wherein preferably the housing (46) comprises two housing parts, in particular a housing cover (7) and a housing base body (12).

6. Scissors tool (1) of claim 5, wherein the second scissors part (3) extends a) through a scissors part opening (62) of the housing (46) of the first scissors part (2) into the inner chamber (47) of the housing (46) and b) through the inner chamber (47) of the housing (46) to a separating cutting blade opening (63) of the housing (46).

7. Scissors tool (1) of one of the preceding claims, wherein the first scissors part (2) and / or the second scissors part (3) comprise / comprises an accommodation (20, 21) in which the associated separating cutting blade (9, 10) is arranged and supported.

8. Scissors tool (1) of one of the preceding claims, wherein a screw (8) is provided, which a) provides a friction which counteracts a pivoting of the scissors parts (2, 3) about the scissors joint (4) and / or b) defines a cutting clearance of the separating cutting blades (9, 10) and / or c) defines the scissors pivot axis (5).

9. Scissors tool (1) of one of the preceding claims, wherein components of the scissors tool (1) are joined in the same assembly direction, which is oriented parallel to the scissors pivot axis (5).

10. Scissors tool (1) of one of the preceding claims, wherein a cutting edge of the stripping blade (11) is arranged at an acute angle with respect to a cable contact surface (43) which supports a cable to be stripped on the side facing away from the stripping blade (11).

11. Scissors tool (1) of one of the preceding claims, wherein components of the scissors tool (1) are made of plastic, in particular a biogenic plastic.

12. Tool group comprising at least one scissors tool (1) according to one of the preceding claims and at least one pliers tool (64), wherein a) the scissors tool (1) and the pliers tool (64) comprise identical separating cutting blades (9, 10), b) the separating cutting blades (9, 10) of the scissors tool (1) are actuated by pivoting the scissors parts (2, 3) and c) the separating cutting blades (9, 10) of the pliers tool (64) are actuated by pivoting the pliers hand levers (65, 66).