HK1255031B - Stripping tool - Google Patents

Description

Field of Engineering

The invention relates to a stripping tool for removing an outer sheath and/or insulation of a single- or multi-conductor electric cable, wherein the stripping tool comprises connected hollow body part shells connected by means of a common pivot axis, which are pivotable towards each other to form a hollow body at least partially receiving a cable, wherein the hollow body part shells comprise at least one cutting element.

State of the art

Tools for stripping insulation of the aforementioned type are known in the art. For example, the document WO 2005/025023 A1 discloses a stripping tool that can be used both for removing the outer sheath of a multi-core cable and for stripping the insulation of an individual wire. The stripping tool consists of two pivotable half-shells connected at a shell edge, which have several cutting elements across the longitudinal direction of the half-shells. To remove the outer sheath or to strip the conductor insulation, the cable is inserted into a cutting element through an opening from the front side. The stripping tool is gripped in the circumferential direction, with the user's hand almost entirely surrounding the stripping tool, and the thumb and index finger pressing against gripping surfaces arranged on the front side.

For example, to remove the outer sheath of a multi-core cable hanging in an electrical cabinet, it is necessary for the user to twist his forearm and/or hand in order to apply maximum force.

Reference is further made to the prior art, namely US 2010/024604 A1, DE 298 14 771 U1, DE 20 2009 000142 U1 and GB 2 217119 A. All known stripping tools from the aforementioned publications disclose essentially straight, elongated hollow body part areas, and each hollow body part area has only an assigned hollow body part shell. From CH 496343 A, a stripping tool is known which consists of parts that can be shifted relative to each other, wherein a cable is gripped between two spring-loaded parts and thereafter a sliding movement is carried out.

Summary of the Invention

Starting from the initially mentioned prior art, it is the object of the invention to create a stripping tool that is further developed with respect to comfort and force transmission.

For the solution, the invention proposes that the stripping tool has at least two hollow body part areas arranged with an angle between approximately 90° and 170°, in particular between 110° and 150°, relative to each other, wherein at least a first hollow body part area has two pivotable hollow body part shells relative to each other, of which at least one hollow body part shell can be pivoted without displacement of a second hollow body part area.

According to the invention, a first hollow body part area and a second hollow body part area are now arranged relative to each other at a blunt angle between 90° and 170°, resulting in a bent shape of the wire stripper. This bent shape allows for an ergonomic use by the user, enabling a pulling force of at least the same magnitude to be applied to a cable without simultaneously placing a greater strain on the user's forearm and/or hand. At least one first hollow body part area includes a cutting element for removing the sheath or conductor insulation, while a second part area serves as a handle for guiding the wire stripper. Particularly advantageously, the two hollow body parts form a pistol-like shape of the wire stripper. The pistol-like shape corresponds to the natural position of the wrist during application of a pulling force. Thus, excessive strain on the wrist is prevented.

In principle, there are at least two different embodiments of the stripping tool. According to a first possible embodiment, only a first hollow body part area has two hollow body part shells which are pivotable relative to each other about a pivot axis, while the second hollow body part area is an immobile handle part and thus does not have any pivotable hollow body part shells. According to a second possible embodiment of the invention, both hollow body part areas have pivotable hollow body part shells relative to each other, that is, each of the hollow body part areas has a pivot axis. According to this second embodiment, each of the hollow body part areas can be used both for stripping and as a handle part.

It is particularly recommended that two hollow body part areas each have two pivotable hollow body part shells. In one possible embodiment, a first hollow body part area is designed to accommodate a cable with a first diameter, while a second hollow body part area is designed to accommodate a cable with a second diameter, which differs from the first diameter. This makes the stripping tool optimized at least for stripping two cables of different diameters. For example, in the first hollow body part area, a cable with a larger diameter, such as a multi-core round and moisture-proof cable (e.g., NYM cable) with a diameter of 8 mm to 13 mm, can be stripped, while in the second hollow body part area, a coaxial cable and/or data cable with a diameter of 4.5 mm to 10 mm can be stripped. Furthermore, it is also possible, alternatively or additionally, to specially optimize one of the hollow body part areas for flat or round cables or cables with different sheath thicknesses.

Furthermore, it is proposed that the stripping tool has at least two pivoting axes, which are arranged on one hand in a common first hollow body part shell and on the other hand in separately separated second hollow body part shells. Thus, the stripping tool has an angled first hollow body part shell, which carries two or more pivoting axes arranged at an angle relative to each other, corresponding to the angle between the hollow body part areas. A separate second hollow body part shell is arranged on each of these pivoting axes, which can be pivoted independently from the movement of the other second hollow body part shells. Therefore, when inserting a cable into the hollow body, the entire hollow body does not have to be opened, but only one of the hollow body part areas, which is formed by the first hollow body part shell and only one of the separate second hollow body part shells. The other hollow body part areas remain closed, so that, for example, they can be held as a handle part and do not need to be released for inserting the cable into the stripping tool. This facilitates the use of the stripping tool and saves time during application.

The first and second pivot axes arranged on the separate second hollow body shell halves can be arranged either on the same shell edge of the hollow body or of the first hollow body half-shell, on opposite shell edges, or offset by an angular range between 0° and 180° (in the circumferential direction). With an arrangement that is offset by 180° in the circumferential direction, i.e., opposite, it is advantageously achieved that the cable must always pass through the hollow body part shells from the left side when the user acts upon one of the hollow body part areas. In other words, this means that the user always looks at the stripping tool from the left side, whether grasping the first hollow body part area or the second hollow body part area, according to the pistol-like shape of the stripping tool (with, for example, the right hand).

The hollow body part shells of a hollow body section of the stripping tool can, as also preferably, be lockable in a closed position. This can apply to both second hollow body part shells, alternatively, as also preferably, only to one of the two second hollow body part shells. Due to the possible locking, handling of the stripping tool is further simplified. The locking can relate to the hollow body section used for stripping or sheathing. Also, the locking can be advantageous in the area of the hollow body section that can be used as a handle.

It is preferred that the stripping tool can be used both in a locked and an unlocked position.

The hollow body part shells can be pivotable by means of a shaft body extending in the longitudinal direction of the hollow body part shell. This shaft body may be separate from the interacting hollow body part shells, for example, a inserted metal shaft. Preferably, both second hollow body part shells are pivotably connected to the first, bent hollow body part shell via such a shaft body.

In a possible configuration, the shaft body can pass through a locking part. Such a locking part can serve for the secure fixation of a second hollow body part shell. The shaft body passing through the locking part can furthermore serve for the preferred irreversible securing of the locking part to one of the hollow body part shells, as well as for a possible guidance of the locking part during its movement from a locked position into an unlocked position and vice versa.

In addition, the locking part can, as also preferred, be movable in a direction perpendicular to the longitudinal direction of the shaft body between an engaged and a disengaged position. In this case, too, a favorable handling is achieved, for example, a thumb-operated handling of the locking part to move it from one end position to the other. The displacement direction of the locking part can, at least approximately, be tangential in cross-section relative to one of the hollow body part shells.

In a preferred embodiment, at least the locked position is latched. In a further, also preferred embodiment, such latching occurs both in the locked position and in the unlocked position, and this latching can take place on the same hollow body part shell in each case. In a possible embodiment, this is the first hollow body part shell. Preferably, the latching is one that can be released solely by the user applying a sliding force to the locking part, for example, due to the overflow of a predetermined latching projection.

It is further proposed that a first hollow body part area has gripping projections extending beyond the circumferential surface for compressing the shell of the hollow body formed by the hollow body parts using a thumb and an index finger of one hand, and wherein a second hollow body part area has a grip surface for simultaneously applying the palm of the hand. According to this configuration, the gripping projections of the first hollow body part area are grasped and compressed during the removal of a cable sheath, while the second hollow body part area is guided through essentially the palm of the hand. It may be provided that both the first hollow body part area and the second hollow body part area have gripping projections, so that both hollow body part areas can be used equally for stripping. It is advisable that the two gripping projections are arranged perpendicular to the plane spanned by the two hollow body part areas. This corresponds to a natural hand position of a user during the removal of a cable sheath.

The hollow body formed by the two hollow body shell halves can have a conical shape at least in relation to one end region, which widens toward a gripping surface of the stripping tool. Thus, the stripping tool has a conical outer contour at one or both end regions, which facilitates better accessibility of the stripping tool in narrow cable junction boxes, switch cabinets or similar. This is particularly advantageous where several cables are closely arranged next to each other. To strip one of several closely arranged cables, the cable to be stripped is spread apart from the other cables, creating an angle between the cables. The conical end portion of the stripping tool is then pushed as deeply as possible into this angle until the conical outer surface is brought as close as possible to the apex. The cutting element arranged inside the hollow body can advantageously be positioned within the conical end portion.

It is further proposed that the conical surface has an angle of approximately 30° to 60° relative to the end face of the terminal section. This corresponds to a typical spreading of a cable to be stripped from several adjacent cables. Thus, the stripping tool can be used optimally.

Furthermore, it is proposed that the conical section is formed starting from a front surface of the end portion over a length of 5 mm to 20 mm. This ensures that a sufficiently large outer surface of the stripping tool is available for spreading a cable, while at the same time, in terms of a compact tool, the diameter of the stripping tool is kept as small as possible.

Furthermore, it is proposed that the hollow body, which is at least partially designed to accommodate a cable, comprises two pivotable hollow body part shells that are pivoted towards each other along a shell edge where the hollow body part shells are pivotable relative to each other. The hollow body has a depression for pressing a cable into the hollow body, which depression particularly has an opening angle of less than 180°. With this design, it is possible to press the stripping tool with a cable, so that it is not necessary to use a hand to pivot one of the hollow body part shells. A cable to be inserted into the hollow body is pressed against the slanted surfaces of the depression, causing the two hollow body part shells to separate from each other, thus allowing the cable to be inserted.It is recommended that the indentation has an opening angle of less than 180°, so that the indentation does not form a flat surface, but rather the edge areas of the indentation (similar to a ledge) grip the cable inserted therein. This creates an attack surface on which the cable can act and open the wire stripper. Thus, the user can hold the wire stripper as usual on a gripping area of, for example, a second hollow body part section with one hand and press a cable against the indentation formed on a first hollow body part section with the other hand. Advantageously, the indentation is also located near an end portion of the wire stripper, particularly an end portion,which has an opening for inserting a cable. This makes it possible to advantageously position the recess in an area that is accessible from essentially different directions. Particularly advantageously, the recess is located in an area whose outer contour has a conical shape that flares out toward a gripping surface of the stripping tool. Thus, the stripping tool can be particularly easily opened by pressing a cable against the recess. Alternatively, the recess can also be formed on projecting contact lugs.

Furthermore, it is proposed that the opening angle of the recess corresponds to an opening width of 1 mm to 20 mm, particularly corresponding to the diameter of a cable to be inserted into the hollow body. Thus, the recess is large enough to allow a multi-core cable, such as an NYM cable, to engage at the edge of the recess in order to open the wire stripper. It is especially recommended that the circumferential section of the recess corresponds approximately to the diameter of the cable to be inserted into the hollow body, thus reliably preventing the cable from slipping off the wire stripper. Particularly advantageously, the recess has an opening angle of 150° or less.

It is recommended that the pivot axis be assigned a spring, by means of which the hollow body part shells can be pivoted towards each other to form a hollow body or pivoted away from each other to open the hollow body. According to the first-mentioned alternative, in order to open the stripping tool, that is, to insert a cable between the two hollow body part shells, it is necessary to pivot at least one hollow body part shell against the restoring force of the spring. The restoring force of the spring should be dimensioned such that it is easily possible to open the hollow body part shell by means of a cable engaging in the recess. As soon as one of the hollow body part shells is pivoted and the cable has reached between the two hollow body part shells,The return force moves the hollow body part shell back to the closed position. At this point, the cable is already securely held between the hollow body part shells without any further action by the user. The user only needs to subsequently press the two hollow body part shells together, advantageously equipped with gripping tabs formed on the corresponding hollow body part area, in order to strip or remove the insulation. According to the second alternative, the hollow body part shells can be pivoted away from each other by means of the return force of the spring to open the hollow body, that is, the return force acts in the direction of the pivoted-open position of the hollow body. In order to press the hollow body part shells together, it is necessary for the user to overcome the return force of the spring. As soon as the user releases his grip from the hollow body part shells, the hollow body automatically opens again due to the return force of the spring.so that the user can remove the cable from the tool without manually pivoting one of the hollow body part shells. In this context, for example, it may also be provided that a stripping tool has a first hollow body part area with a spring whose restoring force is directed in the closing direction of the hollow body, while a second hollow body part area has a spring whose restoring force is directed in the opening direction of the hollow body.

In addition, it is proposed that the hollow body part shells have cutting elements arranged side by side in the direction of a shell edge, at which the hollow body part shells are pivotable towards each other. Each cutting element is assigned a guiding groove, which comprises at least one rib extending laterally from a cutting element for aligning a cable on a cutting element. In the case of multiple ribs, these are formed on opposite sides of two cutting elements, in particular on two adjacent cutting elements, in the direction of the shell edge.

According to this design, the stripping tool is advantageously designed to remove both an outer sheath of a multi-core cable and the conductor insulation of a single-core cable. While removing an outer sheath is advantageously done, for example, on the front side of the stripping tool, removing conductor insulation can, for example, be done in a direction perpendicular to this, that is, at a shell edge of the hollow body.

According to a conceivable embodiment, the cutting elements are arranged at the shell edge which is substantially opposite to the pivot axis, where the hollow body part shells can be connected. Each hollow body part shell carries a cutting element which corresponds to a cutting element of the opposite hollow body part shell. In the open state of the stripping tool, the two hollow body part shells are pivoted away from each other, so that the opposing cutting elements are separated and a cable can be placed between a pair of cutting elements.

In the current state of the art, adjacent cutting elements are usually arranged directly next to each other in a direction parallel to the pivot axis, and these may, for example, be arranged in increasing size next to each other. The increasing size of the cutting elements corresponds to different cable diameters. The size difference between the cutting elements is often not easily noticeable, so that a user, when there are a number of, for example ten, cutting elements arranged side by side, cannot immediately recognize which cutting element is most suitable or which one was used during a previous stripping process.

According to an embodiment, the cutting elements are now assigned a guide frame, which serves one thing to align a cable with a cutting element, and another thing to orient a user within the plurality of laterally arranged cutting elements.

In a particularly simple embodiment, it may be provided that the guide housing has only one rib, which for example divides a series of cutting elements into two halves and thus provides assistance in recognizing or re-recognizing the appropriate cutting element. If, for example, four cutting elements are arranged side by side at the edge of the shell, the rib of the guide housing can be positioned centrally between the second and third cutting element, allowing the user to easily and quickly recognize all four cutting elements both by touch and visually.

If a larger number of cutting elements are arranged along the shell edge, it is advisable that the guide cam has several ribs which are then formed in a longitudinal direction on opposite sides of two cutting elements, particularly on opposite sides of two adjacent cutting elements. Between two consecutive ribs of the guide cam along the shell edge, two cutting elements are particularly advantageously arranged, allowing the user to orient himself on the ribs when selecting an appropriate cutting element. In this way, between consecutive ribs of the guide cam, two or even three cutting elements can be arranged, so that the user first orients himself on the ribs, for example selects a section between a first and a second rib, and then lays the cable, for example, on the left rib with respect to the section between the two ribs and lowers it onto the cutting element. This operation can then be performed multiple times by the user without always having to count the cutting elements again.

It is also advantageous if the cutting elements are arranged at different intervals from each other, for example, grouped in pairs and spaced apart relative to a neighboring pair. Thus, the use of the stripping tool becomes particularly convenient. The guide block is advantageously arranged only on one of the two hollow body part shells, with the webs of a first hollow body part shell extending toward the second hollow body part shell and protruding in size beyond the cutting elements.

In a closed state of the stripping tool, the webs can rest on the outer surface of the opposite hollow body part shell. The guide cam provides not only orientation but also the alignment of the cable relative to the cutting elements. Furthermore, during the folding together of the stripping tool, and thus when the two cutting elements of a cutting element pair come into contact, a centering of the cable on a cutting element occurs.

In addition, it may be provided that the guide structure has two partial guide grooves arranged on opposite sides of the cutting elements, which are perpendicular to a direction running along the edge of the sleeve. The cutting elements arranged along the edge of the stripping tool are thus flanked on both sides, that is, both in a radially outward direction and in a radially inward direction, by a respective partial guide groove of the guide structure, wherein the partial guide grooves are advantageously arranged parallel to the edge of the sleeve. The guide structure thereby forms a three-dimensional guide for a cable to be stripped. Since the cable is guided both before and after the respective cutting element when being inserted into the stripping tool, a tilting of the cable relative to the cutting element is prevented. Thus, an optimal stripping result can be achieved.

In addition, it is proposed that at least one hollow body part shell has a marking formed in the insertion direction of a cable behind a cutting element, which allows a user to perform an analog measurement of the length to be stripped. Advantageously, the marking comprises a plurality of lines arranged parallel to the cutting elements, which are particularly advantageously assigned millimeter markings, for example "4", "8", "12", "16". When inserting a cable to be stripped into the stripping tool, the user can immediately see how far the cable protrudes into the stripping tool.

Of course, it is also possible to provide a corresponding marking for the stripping of a multi-core cable. This marking is then arranged perpendicular to the marking of the cutting elements, namely essentially in a direction parallel to the pivot axis of the stripping tool.

It can also be provided that the marking is three-dimensionally formed in a physical manner. For example, this formation can be a rib that protrudes from the inner wall of the respective hollow body part shell. This facilitates a user of the stripping tool in measuring a corresponding length.

It is further proposed that a first hollow body part area may have functional flaps extending beyond the circumferential surface, wherein at least one functional flap has a cutting element with a blade extending in the direction of the pivot axis.

At least one functional flap can, as preferably, project outwardly from the circumferential surface of the hollow body part shell, on which the functional flap is preferably formed in one piece and material unitarily, such that at least approximately a radial orientation of the functional flap with respect to a central axis extending through the respective hollow body part area in the longitudinal direction is established in a corresponding cross section. In a preferred embodiment, the functional flap has a cutting element, for example, for cutting into a cable sheath along its longitudinal extension.

The use of a blade arranged in a functional flap occurs preferably outside the area enclosed by the hollow body part shells, further preferably in a peripheral region thereof.

Preferably, two functional flaps are provided, each assigned to the respective hollow body part shells interacting with each other. Furthermore, the functional flaps can overlap each other at least in the area of the cutting edge when the hollow body part shells are closed. In this case, both functional flaps can have a cutting edge directed towards the other functional flap, or alternatively, only one of the two functional flaps can have a cutting edge. In particular, in this case, the functional flap without a cutting edge can provide a support area for the cable to be inserted from the side.

The functional flaps, which at least in the area of the blade are provided with a covering, retain, in their operating position which is preferably corresponding to the shell-closing position, a throughput opening having a diameter corresponding to usual diameters of electrical cables to be processed. The throughput opening is preferably circular or optionally elliptical in cross-section. The blade extends radially inward into the remaining cross-sectional area of the opening, thereby engaging the sheath of the cable being processed.

In a preferred axial extension of the throughput opening, a guide for the cable also guided through the throughput opening can be formed on the housing, for example in the form of a recess.

A particularly user-friendly configuration is one in which the functional flaps are designed as attack flaps, especially those already described above. Accordingly, during the stripping process, pressure can be applied via the attack flaps toward a closed position, and further pressure can be applied to the blade that is inserted into the sheath.

Short description of the drawings

The invention will be explained in more detail below by means of embodiments. A part that is only explained with reference to one of the embodiments and is not replaced by another part in another embodiment due to the specific features of that other embodiment is also described as a possibly existing part for this other embodiment. The figures show: Fig. 1: a stripping tool in a perspective view, relating to a first embodiment; Fig. 2: the stripping tool in a side view; Fig. 3: the stripping tool in a closed state in a top view; Fig. 4: the stripping tool in an open state in a top view; Fig. 5: the stripping tool with two inserted cables; Fig. 6: the stripping tool in a perspective side view; Fig. 7: the stripping tool in a perspective view (back side as shown in Fig.1) Fig. 8, the stripping tool according to Fig. 7 after insertion of a cable; Fig. 9, a cross-section through a recess of the stripping tool; Fig. 10, the stripping tool in a side view, relating to a second embodiment; Fig. 11, an enlargement of area 11 in Figure 10; Fig. 12, the section according to line XII-XII in Figure 10; Fig. 13, an enlargement of area XIII in Figure 12, relating to a locking part in the unlocked position; Fig. 14, a configuration corresponding to Figure 13, but relating to the locked position; Fig. 15, the stripping tool of the second embodiment in a perspective side view according to Figure 6; Fig. 16, a perspective representation corresponding to Figure 15, but relating to an upright position of a second hollow body part shell provided with a function tab; Fig. 17, an enlargement of area XVII in Figure 15; Fig.18 the enlargement of area XVIII in Figure 17.

Description of the embodiments

Figures 1 to 6 show a first side of an exemplary stripping tool 1 for removing an outer sheath 2 and/or a conductor insulation 3 of an electrical single or multi-core cable 4. The stripping tool 1 comprises two hollow body part areas 12, 13 forming a hollow body 9, which are arranged relative to each other at an angle α (see figure 2). The angle α is approximately 135° here. The two hollow body part areas 12, 13 have a common first hollow body part shell 7, on which two pivot axes 5, 6 are arranged. A first pivot axis 5 is assigned to the first hollow body part area 12, while a second pivot axis 6 is assigned to the second hollow body part area 13. A second hollow body part shell 8 is arranged on each pivot axis 5, 6, which can be pivoted relative to the first hollow body part shell 7 about the respective pivot axis 5, 6. The pivot axes 5, 6 are arranged on opposite shell edges 19 of the first hollow body part shell 7.

Within the hollow body 9, a cutting element 10 (see Figure 4), in particular a pair of cutting elements, is arranged both in the first hollow body partial area 12 and in the second hollow body partial area 13, whose cutting edge 11 runs perpendicular to the pivot axes 5, 6. This cutting element 10 is particularly used for removing an outer sheath 2 of a multi-core cable 4. In the region of this cutting element 10, the hollow body 9 has an opening 16 through which a cable 4 to be stripped can be guided.

The end section 17 that is supported by the opening 16 of the hollow body part area 12 further has a conical shape 18 in its outer contour, which flares outward in a direction away from the opening 16. The cone 18 here has an angle β of approximately 45° relative to the plane of the opening 16 (see figure 2).

Overall, the first hollow body part area 12 and the second hollow body part area 13 of the stripping tool 1 form a pistol-like shape, so that a user of the stripping tool 1 can use the gripping surface 15 of the hollow body part areas 12, 13 as a handle part, and the other hollow body part area 13, 12 as the actual tool for stripping a cable 4.

The stripping tool 1 has a plurality of cutting elements 21, particularly cutting element pairs, at a shell edge 19, here six cutting elements 21. These are arranged such that corresponding cutting elements 21 of a pair are positioned on the first hollow body part shell 7 and the second hollow body part shell 8. A guide cam 22 is formed in the direction of the cutting elements 21 arranged side by side along the shell edge 19, which has several webs 23 for guiding a cable 4 into the hollow body 9 (see figures 5 and 6). The webs 23 are divided between two partial guide cams 24 of the guide cam 22, wherein the partial guide cams 24 extend parallel to and on opposite sides of the shell edge 19 that carries the cutting elements 21.

Figure 4 shows the stripping tool 1 in an open position, with the two second hollow body part shells 8 pivoted around the pivot axes 5, 6. A marking 25 formed on the first hollow body part shell 7 can be seen, indicating the distance from a cutting element 21 to a line of the marking 25. This allows measuring the length to be stripped from a cable 4. Each line of the marking 25 is assigned millimeter values, here "8", "12", "16".

Finally, the hollow body part shells 7, 8 are provided with attack bottles 14, which serve to compress the two hollow body part shells 7, 8 during the stripping process. The attack bottles 14 extend from the circumferential surface of the hollow body 9 in a direction arranged perpendicular to a plane spanned by the hollow body partial areas 12, 13.

Figure 5 shows the stripping tool 1 with two cables 4 inserted into the hollow body 9. The cables 4 have different diameters, wherein the cable 4 inserted into the first hollow body partial area 12 has a larger diameter than the cable 4 inserted into the second hollow body partial area 13. Normally, during the stripping process, only one cable is present in either the first hollow body partial area 12 or the second hollow body partial area 13. Each respective hollow body partial area 12, 13 is optimized for specific cable diameters. For example, the first hollow body partial area 12 can be designed for round and wet room cables with a diameter of 8 mm to 13 mm, while the second hollow body partial area 13 is optimized for data cables with a diameter of 4 mm to 8 mm. Depending on the respective diameter, the cutting element 10, the opening 16, or also the inner diameter of the hollow body partial areas 12, 13 can be designed.

Figures 7 to 9 show the backside of the stripping tool 1 (shown in figures 1–6), which has a recess 20 on the outer surface of the second hollow body part area 13, excluding a circumferential sub-area. The recess 20 cuts out approximately a 130° angular section from the circumference of the hollow body part area 13. A cable 4 to be inserted into the hollow body 9 can be placed into this recess 20 and pressed against the shell edge 19 until the hollow body part shells 7, 8 swing apart from each other. In this process, the restoring force of a spring (not shown) arranged on the pivot axis 6 must be overcome, which attempts to close the hollow body 9.

Figure 7 shows the condition in which a cable 4 lies in the recess 20 and presses against the hollow body part shells 7, 8. The cable 4 rests against the slanted sides of the recess 20. In Figure 8, the cable 4 has already been guided between the two hollow body part shells 7, 8. The spring closes the hollow body 9 immediately after the cable 4 has overcome the open shell edge 19, due to its restoring force.

Figure 9 finally shows a cross-section through the second hollow body part area 13 in the region of the recess 20. It can be seen here that the recess 20 is cut out from the otherwise circular periphery of the hollow body part area 13, with an opening angle γ of approximately 130°.

The invention now works, for example, in such a way that a user selects a hollow body part area 12, 13 of the stripping tool 1, which best matches the diameter of the cable 4, in order to remove the outer sheath 2 of a cable 4. For example, if the cable 4 has a diameter of 6 mm, the second hollow body part area 13 is particularly suitable here. Therefore, the user grasps the stripping tool 1 at the first hollow body part area 12, which is connected to the second hollow body part area 13 in a manner similar to a pistol shape. The gripping surface 15 of the first hollow body part area 12 serves for placing the user's hand, especially the palm as well as the ring and middle fingers.With the other hand, the user grasps the cable 4 to be stripped and presses it within the recess 20 against the hollow body part shells 7, 8 of the second hollow body part area 13 (see figures 7 and 9). If the user applies a force greater than the restoring force of the spring assigned to the pivot axis 6, the second hollow body part shell 8 pivots, allowing the cable 4 to be inserted into the hollow body 9. If necessary, the user then moves the stripping tool 1 along the outer sheath 2 of the cable 4 until a desired length of the cable 4 intended for stripping is reached. If the stripping tool 1 is used in a difficult-to-reach junction box or in a cramped electrical cabinet,Can the stripping tool 1 be brought as close as possible to the desired application point due to the cone 18 of the end section 17?

Then, the user grips the second hollow body part area 13 with the thumb and index finger, and presses the hollow body parts 7, 8 together. This pushes the cable 4 against the cutting element 10, so that when the cutting element 10 rotates around the cable 4, a corresponding cut is made, allowing the removal of the outer sheath 2. The rotation of the stripping tool 1 around the cable 4 is carried out by the user in a conventional way through a rotational movement of the wrist.

In a similar manner, the cable 4 can also be stripped within the first hollow body part area 12, where the gripping jaws 14 can be used to press together the hollow body part shells 7, 8.

Furthermore, the user can use the stripping tool 1 to remove the conductor insulation 3 of a single-core cable 4. To do this, the user manually opens the first hollow body part area 12 of the stripping tool 1 by pivoting the second hollow body part shell 8 of the first hollow body part area 12 relative to the first hollow body part shell 7. This allows the user to look into the hollow body 9 of the stripping tool 1, which has a plurality of cutting elements 21 arranged side by side at the shell edge 19 opposite to the pivot axis 5. According to the respective diameter of the conductor insulation 3, the user selects a corresponding cutting element 21, which the user can particularly advantageously recognize by orienting himself to the irregularly arranged ribs 23 of the guide slide 22.In particular, when stripping a plurality of cables 4 with the same diameter, the user can remember the rib 23 closest to the desired cutting element 21 and quickly insert the cable 4 into the stripping tool 1. In this case, the user advantageously supports the cable 4 against the adjacent rib 23, thereby essentially aligning the cable 4 relative to the cutting element 21. Additionally, the user can measure a desired length of the cable 4 to be stripped based on the marking 25. For example, if a length of twelve millimeters of the cable 4 is to be stripped, the user inserts the cable 4 into the stripping tool 1 up to the mark indicating "12" millimeters.

Figures 10 to 18 show a second embodiment of a stripping tool 1, which is basically based on the embodiment shown in figures 1 to 9.

In the illustrated embodiment, a second hollow body part shell 8 can be latched to the first hollow body part shell 7, particularly in the shell closing position. Such a latching is shown in connection with the hollow body part area 12. Furthermore, such a latching is also possible, additionally or alternatively, in the hollow body part area 13.

Each second hollow-body part shell 8 is pivotable about an axle body 26 extending in the longitudinal direction of the respective hollow-body part section 12 or 13. This axle body 26 is preferably held at the edge of the first hollow-body part shell 7, forming the pivot axis 5 or 6, respectively. Preferably, the axle bodies 26 or the pivot axes 5 and 6 are arranged opposite each other with respect to the longitudinal extension of the stripping tool 1.

The edge regions of the first and second hollow body part shells 7 and 8, facing each other in the joint area, are alternately nested into each other over their length extension, thereby overlapping the geometric pivot axis.

In the illustrated embodiment, a slide-displaceable locking part 27 is assigned to the hollow body part area 12. This is pivotally positioned at approximately the middle of the longitudinal extension of the hollow body part area 13, in the hinge side of the arrangement.

The locking part 27 is initially located in a wall-side recess 28 of the fixed hollow body part shell 7. This recess 28 is open toward the separation plane between the first hollow body part shell 7 and the pivoting second hollow body part shell 8.

In extension of the recess 28, on the outer side of the closed hollow body part shell 8, a locking recess 29 is formed, which is also open in the direction of the separating plane.

The locking part 27 is passed through the elongated, slot-like recess 30, which is oriented perpendicular to the extension of the geometric pivot axis, by the assigned shaft body 26. As a result, the locking part 27 is guided perpendicularly to the axis orientation on the bottom surface of the recess 28, and is relatively displaceable in a substantially tangential manner relative to the pivot axis. Furthermore, it is securely held on the stripping tool 1.

The actuation or displacement of the locking part 27 can be performed with one hand, for example, by means of thumb pressure, as also preferred.

By means of a sliding movement from an unlocking position as shown in Figure 13 to a locking position according to Figure 14, the locking part 27 crosses the separating plane between the first hollow body shell 8 and the second hollow body shell 7 in the hinge area (this when the hollow body section is closed) and enters the area of the locking recess 29 of the pivoting second hollow body shell 8. Thus, there is a support of the hollow body shell 8 in the opening direction on the locking part 27.

Both latching positions can be latched, as preferred and as illustrated. As shown, such latching occurs between the locking part 27 and the first hollow body part shell 7. The latter has a releasable latch projection 31 facing the corresponding surface of the locking part 27 in the area of the recess 28, which extends into latching recesses 32 of the locking part 27 in both the locked and unlocked positions, in a direction of displacement.

The outward-facing surface of the locking part 27 can be ergonomically shaped, for example, by a shell-like design. Furthermore, the surface, as indicated in the drawing, can have a profiling to ensure favorable force transmission. Additionally, the surface can be made more secure to grip at least partially by means of soft plastic components inserted, for example, using a two-component injection molding process.

Such a surface design that is favorable for power transmission can also be provided in the region of one or both attachment lugs 14 (see, for example, figure 15).

In addition, the attack flaps 14 according to the illustrations in figures 15 to 18 can not only and exclusively serve the loading of the assigned shell in the direction of the closed position, but can also have a cutting function.

Thus, the attack flaps 14 are formed as functional flaps 33. These also extend outward from the first hollow body part shell 7 and the second hollow body part shell 8 respectively beyond the circumferential surface, facing away from the pivot axis. The functional flaps 33 are formed in the hollow body part area 12 in the illustrated embodiment.

The functional flaps 33 are arranged in overlapping relation to each other when the hollow body part shells 7 and 8 (as shown in Figure 15) are closed, wherein in this closed position a preferably round throughput opening 34 is formed. This throughput opening 34 is preferably formed half-way by a corresponding recess in the area of the facing surfaces of the functional flaps 33.

The throughput opening 34 extends, when the housing is closed, preferably in parallel alignment with the geometric pivot axis of the associated hollow body part section. Furthermore, the throughput opening 34 is positioned between the functional flaps 33 such that, with reference to a cross-section perpendicular to the longitudinal extension of the hollow body part section 12 as shown in Figure 12, the throughput opening 34 extends laterally of the housing wall.

At least one functional flap 33 has a cutting element, preferably the functional flap 33 assigned to the pivotable second hollow body part shell 8.

The cutting edge 35 of the cutting element extends into the free cross-sectional area of the throughput opening 34 when the shells are closed, and it extends essentially in a direction according to the geometric pivot axis of the same hollow body part section.

The cutting element 35 provided with the throughput opening 34 is preferably used for cutting into the sheath of a cable along the longitudinal direction, thereby facilitating the removal of the sheath, particularly over longer cable lengths. During such a cutting operation, the cable is pulled through the throughput opening 34.

In such handling, a cable arrangement may occur in the axial extension of the throughput opening in the hollow body part area 13, especially in a corresponding section of the relevant hollow body part shell 8. Particularly advantageous in this context is an externally accessible guide 36 in the form of a cable groove, which can be formed on the hollow body part shell 8 of the hollow body part area 13.

Although the figures show only embodiments of the invention, it goes without saying that individual sub-features can also be combined with each other. For example, both the first hollow body part area 12 and the second hollow body part area 13 can carry cutting elements 21. The orientation of the pivot axis 5, 6 relative to the shell edges 19 is also variable. In addition, the stripping tool can have a recess 20 as well as cutting elements 21 at the shell edge 19 of a hollow body part area 12, 13. Furthermore, a conical end section 17 can also be combined. The stripping tool 1 can be designed as a right-handed or left-handed tool, and if necessary, the pivot axes 5, 6 can be shifted to an opposite shell edge 19 between the two hollow body shells 7, 8. Further combinations of features are possible.

The above explanations are intended to clarify the inventions generally covered by the application, which each independently advance the state of the art at least through the following combinations of features, namely:

A stripping tool characterized in that the stripping tool 1 has at least two hollow body part areas 12, 13 arranged with respect to each other at an angle α of approximately between 90° and 170°, in particular between 110° and 150°, wherein at least a first hollow body part area 12, 13 has two pivotable hollow body part shells 7, 8, of which at least one hollow body part shell 7, 8 is pivotable without displacement of a second hollow body part area 13, 12.

A stripping tool characterized in that the two hollow body part areas 12, 13 form a pistol-like shape of the stripping tool 1.

An insulation removal tool characterized in that two hollow body part areas 12, 13 each have two pivotable hollow body part shells 7, 8.

A stripping tool characterized in that a first hollow body part area 12 is designed to accommodate a cable 4 having a first diameter, and wherein a second hollow body part area 13 is designed to accommodate a cable 4 having a second diameter, which differs from the first diameter.

A stripping tool characterized by at least two pivoting axes 5, 6, which are arranged on one hand on a common first hollow body part shell 7 and on the other hand on separate second hollow body part shells 8.

A stripping tool characterized in that a first and a second pivot axis 5, 6 of the second hollow body part shell 8 are arranged opposite to each other.

A stripping tool characterized in that a hollow body part shell 8 of a hollow body part area 12, 13 can be locked in a closed position.

A stripping tool characterized in that a hollow body part shell 8 is pivotable by means of an axle body 26 extending in the longitudinal direction of the hollow body part shells 8.

A stripping tool characterized in that the shaft body 26 passes through a locking part 27.

A stripping tool characterized in that the locking part 27 is movable in a locking and unlocking position across the longitudinal direction of the shaft body 26.

A stripping tool characterized in that the locking part 27 is latched on the same hollow body part shell 7 both in the locked and unlocked position.

A stripping tool characterized in that a first hollow body part area 12 has gripping tabs 14 projecting beyond an outer surface for compressing the hollow body part shells 7, 8 forming the hollow body 9 by means of a thumb and a forefinger of one hand, and wherein a second hollow body part area 13 has a gripping surface 15 for simultaneously contacting a palm of the hand.

An insulation stripping tool characterized in that the hollow body 9 formed by the two hollow body part shells 7, 8 has a conical shape 18 in its outer contour at least with respect to an end area 17, which widens toward a gripping surface 15 of the insulation stripping tool 1.

A stripping tool characterized in that a circumferential surface of the cone 18 forms an angle β of approximately 30° to 60° with a face end of the end section 17.

A stripping tool characterized in that the cone 18 is formed from a face end of the end portion 17 over a length of 5 mm to 20 mm.

A stripping tool characterized in that the hollow body 9 has a recess 20 for pressing a cable 4 into the hollow body 9 at a shell edge 19, where the hollow body part shells 7, 8 are pivotable towards each other, said recess 20 particularly having an opening angle γ less than 180°.

A stripping tool characterized in that the opening angle γ of the recess 20 corresponds to an opening width of 1 mm to 20 mm, particularly corresponding to the diameter of a cable 4 to be received in the hollow body 9.

An insulation stripping tool characterized in that the pivot axis 5, 6 is assigned a spring, by means of which the hollow body part shells 7, 8 are pivotable towards each other to form a hollow body 9 or pivotable away from each other to open the hollow body 9.

A stripping tool characterized in that a guide groove 22 is assigned to the cutting elements 21, which has at least one rib 23 formed laterally on a cutting element 21 for aligning a cable 4 on a cutting element 21, wherein in the case of several ribs 23, these are formed in the direction of the shell edge 19 on opposite sides of two cutting elements 21, particularly on two adjacent cutting elements 21.

An insulation tool, characterized in that the guide cam 22 has two partial guide cams 24 arranged on opposite sides of the cutting elements 21, which are perpendicular to the shell edge 19 in one direction.

An insulation stripping tool, characterized in that at least one hollow body part shell 7, 8 has a marking 25 formed in the insertion direction of a cable 4 behind a cutting element 21, which allows a user to perform an analog measurement of an insertion length to be stripped of insulation.

A stripping tool characterized in that the marking 25 is three-dimensionally formed in a physical body.

An insulation stripping tool characterized in that a first hollow body part area 12, 13 has functional flaps 33 extending beyond an outer surface, wherein at least one functional flap 33 has a cutting element with a blade 35 extending in the direction of the pivot axis 5, 6.

A stripping tool characterized in that the functional flaps 33 are at least in the area of the cutting edge 35 overlapping each other when the hollow body part shells 7, 8 are closed.

Although the figures show only embodiments of the invention, it goes without saying that individual sub-features can also be combined with each other. For example, both the first hollow body part area 12 and the second hollow body part area 13 can carry cutting elements 21. The orientation of the pivot axis 5, 6 relative to the shell edges 19 is also variable. Furthermore, the stripping tool can at the shell edge 19 of a hollow body part area 12, 13 have both a recess 20 and cutting elements 21. In addition, it is obviously also possible to combine a conical end section 17. The stripping tool 1 can be designed as a right-handed or left-handed tool, wherein, if necessary, the pivot axes 5, 6 can be moved to an opposite shell edge 19 between the two hollow body shells 7, 8. Further combinations of features are conceivable. Liste der Bezugszeichen

1	Abisolierwerkzeug	26	Achskörper
2	Außenmantel	27	Verriegelungsteil
3	Aderisolierung	28	Vertiefung
4	Kabel	29	Verriegelungsvertiefung
5	Schwenkachse	30	Ausnehmung
6	Schwenkachse	31	Rastvorsprung
7	Hohlkörperteilschale	32	Rastvertiefung
8	Hohlkörperteilschale	33	Funktionslasche
9	Hohlkörper	34	Durchsatzöffnung
10	Schneidelement	35	Schneide
11	Schneidkante	36	Führung
12	Hohlkörperteilbereich
13	Hohlkörperteilbereich
14	Angrifflasche
15	Grifffläche
16	Öffnung
17	Endbereich
18	Konus
19	Schalenkante
20	Einbuchtung
21	Schneidelementes	α	Winkel
22	Führungskulisse	β	Winkel
23	Steg	γ	Winkel
24	Teilführungskulisse
25	Markierung

Claims (15)

1. Stripping tool (1) for removing an outer sheath (2) and/or core insulation (3) of an electrical single-core or multicore cable (4), the stripping tool (1) comprising hollow body shells (7, 8) which are interconnected by means of a common pivot pin (5, 6) and can be pivoted towards one another to form a hollow body (9) which accommodates a cable (4) at least in part, the hollow body shells (7, 8) comprising at least one cutting element (10, 21), characterised in that the stripping tool (1) comprises at least two hollow body portions (12, 13) arranged at an angle (α) from one another of between approximately 90° and 170°, in particular between 110° and 150°, at least one first hollow body portion (12, 13) comprising two hollow body shells (7, 8) that can pivot relative to one another, of which at least one hollow body shell (7, 8) can be pivoted without a second hollow body portion (13, 12) being moved.
2. Stripping tool (1) according to claim 1, characterised in that the two hollow body portions (12, 13) form a pistol-like shape for the stripping tool (1).
3. Stripping tool according to either of the preceding claims, characterised in that two hollow body portions (12, 13) each comprise two pivotable hollow body shells (7, 8).
4. Stripping tool (1) according to any of the preceding claims, characterised in that the first hollow body portion (12) is designed to accommodate a cable (4) having a first diameter, and in that the second hollow body portion (13) is designed to accommodate a cable (4) having a second diameter.
5. Stripping tool (1) according to any of the preceding claims, characterised by at least two pivot pins (5, 6) which are arranged on a common first hollow body shell (7) at one end and on separate second hollow body shells (8) at the other end.
6. Stripping tool (1) according to claim 5, characterised in that a first and a second pivot pin (5, 6) of the second hollow body shells (8) are arranged opposite one another.
7. Stripping tool (1) according to any of the preceding claims, characterised in that a hollow body shell (8) of a hollow body portion (12, 13) can be locked in a closed position.
8. Stripping tool (1) according to any of the preceding claims, characterised in that a hollow body shell (8) can be pivoted by means of a pin body (26) that extends in the longitudinal direction of the hollow body shells (8).
9. Stripping tool (1) according to claim 8, characterised in that the pin body (26) passes through a locking part (27).
10. Stripping tool (1) according to claim 9, characterised in that the locking part (27) can be moved transversely to the longitudinal direction of the pin body (26) into a locked and unlocked position.
11. Stripping tool (1) according to either claim 9 or claim 10, characterised in that the locking part (27) is latched to the same hollow body shell (7) in the locked and unlocked position.
12. Stripping tool (1) according to any of the preceding claims, characterised in that the first hollow body portion (12) comprises contact tabs (14) which project beyond a peripheral surface and are intended for pressing together the hollow body shells (7, 8) that form the hollow body (9) by means of the thumb and index finger of a hand, and the second hollow body portion (13) comprises a gripping surface (15) for simultaneously resting against the ball of the thumb of the hand.
13. Stripping tool (1) according to any of the preceding claims, characterised in that the hollow body (9) formed by the two hollow body shells (7, 8) comprises a cone (18) in its outer contour, at least with respect to an end region (17), which cone widens in the direction of a gripping surface (15) of the stripping tool (1).
14. Stripping tool (1) according to claim 13, characterised in that a peripheral surface of the cone (18) is at an angle (β) of approximately 30° to 60° from an end face of the end region (17).
15. Stripping tool according to either claim 13 or claim 14, characterised in that the cone (18) is formed, starting from an end face of the end region (17), over a length of from 5 mm to 20 mm.