WO2024088745A1

WO2024088745A1 - Stripping and cutting tool

Info

Publication number: WO2024088745A1
Application number: PCT/EP2023/077970
Authority: WO
Inventors: Siegfried Storm; Christian Heggemann; Thomas Köster; Tobias ARENS
Original assignee: Weidmüller Interface GmbH & Co. KG
Priority date: 2022-10-28
Filing date: 2023-10-10
Publication date: 2024-05-02
Also published as: DE102022128631A1

Abstract

A stripping and cutting tool (3) for stripping and cutting a cable has an adapter housing (4) with a shaft receptacle (41) for fixing on a shaft, in particular a shaft (22) of a screwdriver (2), a fixed blade (5) arranged on the adapter housing (4), a pivoting blade (6) arranged on the adapter housing (4) to pivot with respect to the fixed blade (6), wherein the fixed blade (5) and the pivoting blade (6) have, on respective first side edges (56, 66), a cutting edge (51, 61) used to cut the cable, wherein the fixed blade (5) and the pivoting blade (6) have, on respective second side edges (57, 67) facing way from the first side edges (56, 66), a stripping cutting edge (52, 62) used to strip the cable.

Description

Stripping and cutting tool

The present invention relates to a stripping and cutting tool for stripping and cutting a cable according to the preamble of claim 1.

Additional tools of this type, which can be attached to the shaft of a screwdriver, for example, and are used to strip or cut a cable, are known from DE 201 05 530 U1 and DE 202 09 058 U1, for example. The tools known from these publications have proven themselves in practice and make it easy to cut a cable or strip the end of a cable.

Stripping and cutting a cable is not possible with these devices. For example, US 5894617 A also discloses a combination tool that allows both stripping and cutting a cable, but this tool is not suitable for attachment to the shaft of a screwdriver.

The object of the present invention is to provide a stripping and cutting tool which can be easily attached to a shaft of a tool, for example a screwdriver, and which simultaneously enables both stripping and cutting of a cable.

This object is achieved by a stripping and cutting tool having the features of claim 1.

The stripping and cutting tool according to the invention has an adapter housing with a shaft receptacle for fixing to a shaft, in particular to a shaft of a screwdriver.

The stripping and cutting tool also has a fixed blade arranged on the adapter housing and a swivel blade arranged on the adapter housing so that it can pivot relative to the fixed blade. The fixed blade and the swivel blade have a cutting edge on their respective first side edges for cutting the cable.

The fixed blade and the swivel blade additionally have a stripping cutting edge on the respective second side edges facing away from the first side edges, which serves to strip the insulation from the cable. With such a stripping and cutting tool, it is possible to strip and cut a conductor cable in a simple manner. The arrangement of the stripping cutting edges on side edges of the fixed blade and the swivel blade that are different from the cutting edges enables a more compact design, compared to separating or stripping cutting edges arranged next to each other.

Advantageous embodiments of the invention are the subject of the dependent claims.

According to an advantageous embodiment of the invention, the swivel knife and the adapter housing each have a stop for limiting a maximum swivel angle of the swivel knife from a starting position to a working position.

This allows the maximum swivel angle of the swivel knife to be determined precisely.

According to an advantageous further development, the stop of the adapter housing is adjustable in order to adjust the maximum swivel angle of the swivel knife.

This makes it easy to use the tool for different cable thicknesses for a stripping process, whereby the stop is adjusted accordingly depending on the cable diameter.

The stop of the adapter housing is preferably formed on an adjusting wheel that is rotatably fixed to the adapter housing, wherein the stop varies in height depending on the rotational position of the adjusting wheel, viewed in a direction perpendicular to a rotation axis of the swivel knife.

According to a first embodiment, the stop of the adapter housing is designed as a side flank of the adjusting wheel, wherein the side flank varies in height depending on the rotational position of the adjusting wheel, viewed in the direction of a rotational axis of the adjusting wheel.

The height of the stop can vary in stages. It is also conceivable that the height of the stop varies continuously, for example in the sense of a ramp-like formation of the side flank of the adjusting wheel.

Preferably, in this embodiment, the stop of the swivel knife is designed as the lower edge of an actuating button of the swivel knife facing the stop of the adapter housing.

According to an alternative embodiment, the stop of the adapter housing is designed as an annular step on a side flank of the adjusting wheel, which is eccentric to a rotation axis of the adjusting wheel.

In order to limit the angle of rotation of the adjusting wheel, according to a preferred development, a web formed on the side flank of the adjusting wheel projects into a partially annular guide groove of the fixed blade which limits the maximum angle of rotation of the adjusting wheel.

According to a preferred development, end regions of the stop are preferably designed as flattened areas.

This further improves the haptic perception of the end positions of the adjustment wheel.

In this embodiment, the stop of the swivel knife is preferably designed as an edge of the swivel knife facing the stop of the adapter housing in a stripping position of the swivel knife.

According to a further advantageous embodiment, the fixed blade is designed as a housing cover closing an open side of the adapter housing.

According to a further advantageous embodiment, the swivel knife is held in the starting position by a spring element.

This means that when the swivel blade is operated, it always remains in its initial position and a cable end can be inserted either into the area between the cutting edges or into the stripping area and only by swiveling the swivel blade The cable is stripped or severed against the spring force of the spring element.

According to a further advantageous embodiment of the invention, in the working position of the swivel knife, a square or approximately square opening remains between the stripping cutting edges of the swivel knife and the fixed knife.

The square cross-sectional design for the stripping process makes it particularly easy to cut and pull the cable insulation off the wire core of the cable.

Preferred embodiments of the invention are explained in more detail below with reference to the accompanying drawings. They show:

Figures 1 and 2 are schematic isometric views of a variant of a stripping and cutting tool attached to a screwdriver from different perspectives,

Figure 3 is an isometric exploded view of the stripping and cutting tool, which can be attached to a screwdriver also shown,

Figure 4 is a side view of the stripping and cutting tool attached to the shaft of the screwdriver,

Figure 5 is a sectional view through a cutting plane designated V in Figure 4,

Figure 6 a top view of the stripping and cutting tool with swivel blade fixed to the screwdriver in the starting position,

Figure 7 is a representation corresponding to Figure 6 with the adjusting wheel hidden to show a stop for the adjusting wheel to prevent it from rotating completely, Figure 8 is a side view of the stripping and cutting tool attached to the screwdriver with the fixed blade and swivel blade hidden,

Figures 9 - 12 side views of the stripping and cutting tool with swivel blade attached to the shaft of a screwdriver in the working position with the setting wheel set differently and the associated openings of different sizes for the stripping process,

Figures 13 and 14 are schematic isometric views of an alternative embodiment of a stripping and cutting tool attached to a screwdriver from different perspectives,

Figure 15 is an isometric exploded view of the stripping and cutting tool according to Figure 13, which can be attached to a screwdriver also shown,

Figure 16 is a side view of the stripping and cutting tool attached to the screwdriver according to Figure 13 with the adjusting wheel hidden,

Figures 17 - 19 Views from below of the stripping and cutting tool according to Figure 13 attached to the shaft of a screwdriver with a swivel blade in the working position with a different setting of the adjusting wheel and the associated different sized openings for the stripping process,

Figure 20 is an isometric view of the adjusting wheel attached to the stripping and cutting tool according to Figure 13,

Figure 21 is a sectional view of the adjusting wheel shown in Figure 20, Figure 22 is a detailed view of the adjusting wheel shown in Figure 20 behind the fixed knife to show the engagement of the web in the guide groove of the fixed knife,

Figure 23 is a detailed view of the position of the stop of the adjusting wheel shown in Figure 20 on the stop of the swivel blade in a closed position of the adjusting wheel, in which the opening for the stripping process is minimally open,

Figure 24 is a detailed view of the stop of the adjusting wheel shown in Figure 20 on the stop of the swivel blade in a position of the adjusting wheel rotated by a maximum angle, in which the opening for the stripping process is maximally open,

Figure 25 is a schematic side view of the fixed blade with the pivoting blade arranged behind it in a first stripping position when the stop of the adjusting wheel is in contact with a first end of the partially annular guide groove, in which the opening for the stripping process is maximally open, and

Figure 26 is a representation corresponding to Figure 25 in a second stripping position when the stop of the adjusting wheel is in contact with a second end of the partially annular guide groove, in which the opening for the stripping process is minimally open.

In the following description of the figures, terms such as top, bottom, left, right, front, back, etc. refer exclusively to the exemplary representation and position of the stripping and cutting tool, adapter housing, fixed blade, swivel blade, actuating button, adjusting wheel and the like selected in the respective figures. These terms are not to be understood as limiting, ie these references can change due to different working positions or the mirror-symmetrical design or the like. In Figures 1 and 2, the reference numeral 2 designates a screwdriver with a handle 21, a shaft 22 and a rotating tip 23.

The reference number 3 designates a first embodiment of a stripping and cutting tool.

The stripping and cutting tool 3 is attached to the shaft 22 of the screwdriver 2. For this purpose, the stripping and cutting tool 3 has an adapter housing 4, as is also shown by way of example in the exploded view of the stripping and cutting tool 3 in Figure 3, with a slot-shaped shaft receptacle 41, so that the adapter housing 4 can be pushed laterally onto the shaft 22 of the screwdriver 2.

For fixing the adapter housing 4 to the shaft 22 of the screwdriver 2, for example, a clamping screw 12 is used, which projects from below through a bore 48 and a square nut 13 into an interior of the adapter housing 4, wherein the clamping screw tip presses against the shaft 22 of the screwdriver 2 and clamps the shaft 22 in the shaft receptacle 41.

The stripping and cutting tool 3 further comprises a fixed blade 5 arranged on the adapter housing 4 and a pivoting blade 6 arranged on the adapter housing 4 so as to be pivotable relative to the fixed blade.

The fixed blade 5 and the pivoting blade 6 have a cutting edge 51, 61 on respective first side edges 56, 66 for cutting off a piece of cable or severing a cable.

Furthermore, the fixed blade 5 and the pivoting blade 6 have a stripping cutting edge 52, 62 on respective second side edges 57, 67 facing away from the first side edges 56, 66, which serves to strip the insulation from the cable.

For the purpose of securing the fixed blade 5 in place on the adapter housing 4, it is preferably designed as a housing cover that closes an open side of the adapter housing 4. On the side of the adapter housing 4 facing the fixed blade 5, edges 46 protrude for this purpose, which receive the fixed blade 5 in a form-fitting manner. To fix the fixed blade 5 to the adapter housing 4, a fixing screw 16 is preferably used, which is screwed through a bore 53 of the fixed blade 5 into a threaded bore 47 of the adapter housing 4.

The pivoting knife 6 is preferably held on the adapter housing 4 via a pivot axis 14 accommodated in an axis holder 44 of the adapter housing 4. The pivot axis 14 projects through a bore 54 in the fixed knife 5 into a bore 64 of the pivoting knife 6. The free end of the pivot axis 14 protruding from the bore 64 of the pivoting knife 6 is fixed axially (in the direction of a pivot axis S) to the fixed knife 5 by means of a nut 15.

While Figures 1 and 2 show the swivel knife 6 in its starting position, in which a cable can be inserted between the cutting edges 51, 61 of the fixed knife 5 or the swivel knife 6 or can be pushed into the cable bed 42 on the adapter housing 4 (shown in Figure 1) for stripping over the stripping cutting edges 52 of the fixed knife 5, Figures 9 to 12 show the swivel knife 6 in its working position.

To limit the maximum pivoting angle a of the pivoting knife 6 from its initial position shown in Figures 1 and 2 to the working position shown in Figures 9 to 12, the pivoting knife 6 and the adapter housing 4 each have a stop 73, 81.

The stop 81 of the adapter housing 4 for setting the maximum swivel angle a of the swivel knife 6 is preferably designed to be adjustable.

For this purpose, as shown in Figures 3 and 9 to 12, the stop 81 of the adapter housing 4 is designed as a side flank, facing the stop 73 of the pivoting knife 6, of an adjusting wheel 8 which is rotatably held on the adapter housing 4.

The stop 81, designed as a side flank, varies in its height h depending on the rotational position of the adjusting wheel 8, viewed in the direction of the rotational axis D of the adjusting wheel 8.

In the variant of the adjusting wheel 8 shown in Figure 3, the side flank of the adjusting wheel 8 designed as a stop 81 is designed like a ramp, so that the swivel angle a can be adjusted continuously, i.e. steplessly.

In principle, it is also conceivable to design the side flank in such a way that the thickness of the adjusting wheel 8 corresponding to the height h increases in steps, instead of the ramp-like design.

The adjusting wheel 8 is fixed to the adapter housing 4 by means of a screw 11. To prevent an unintentional adjustment of the adjusting wheel 8, an O-ring 10 is arranged between an underside 82 of the adjusting wheel 8 and the adapter housing 4 in the preferred embodiment shown here.

As further shown in Figure 7, a stop for the adjusting wheel can additionally be provided on the upper side of the adapter housing 4 facing the adjusting wheel 8 in order to prevent rotation of the adjusting wheel 8 by more than a predetermined angle of rotation, preferably of approximately 270°.

To facilitate the rotation of the adjusting wheel 8, the outer surface of the adjusting wheel is provided with a knurling 83.

In the preferred embodiment shown here, the stop 73 of the swivel knife 6 is designed as the lower edge of an actuating button 7 of the swivel knife 6 facing the stop 81 of the adapter housing 4.

The actuating button 7 is, as shown in Figure 3, preferably designed in several parts with a first part 71 and a second part 72, between which the pivoting knife 6 is accommodated.

For fixing purposes, a web 75 is formed on the second part 72, which protrudes through a slot-like recess 63 in the pivoting blade 6 into a receiving slot 74 in the first part 71 of the actuating button 7.

As can be seen in particular in Figure 3, the pivoting knife 6 is held in the starting position by a spring element 9.

The spring element 9, designed here as a torsion spring, has a torsion body 93, from the ends of which a first spring clip 91 and a second spring clip 92 protrude. The first spring clip 91 is inserted into a spring clip receptacle 45 in the adapter housing 4, while the second spring clip 92 protrudes through a guide slot 55 in the fixed blade 5 into a spring clip receptacle 65 in the pivoting blade 6.

The spring clip holder 65, which is designed as a bore, is inserted at a distance from the bore 64 for receiving the pivot axis 14 in order to be able to exert a sufficient torque on the pivoting knife 6.

As shown in Figures 9 to 12, the adjustability of the pivot angle a enables a variation of an opening 17 which remains in the working position of the pivoting knife 6 between the stripping cutting edges 52, 62 of the fixed knife 5 and the pivoting knife 6. Depending on the setting of the adjusting wheel 8, this opening 17 can have a larger or smaller cross-section.

The stripping cutting edges 52, 62 of the fixed blade 5 and the pivoting blade 6 are preferably designed such that they each form a right angle and consequently a square or approximately square opening 17 remains in the working position.

Figures 13 to 24 show a further embodiment of a stripping and cutting tool 3 arranged on a screwdriver 2.

The structure of the stripping and cutting tool 3 essentially corresponds to the structure of the first embodiment of the stripping and cutting tool 3 described with reference to Figures 1 to 12.

A significant difference is the modified arrangement and structure of the adjusting wheel 8' for limiting the maximum swivel angle a of the swivel knife 6.

As a comparison of Figures 1 and 13 shows, the adjusting wheel 8' does not have a rotation axis D aligned perpendicular to the pivot axis 14 of the pivoting knife 6, but rather a rotation axis D aligned parallel to the pivot axis 14 of the pivoting knife 6. Accordingly, the adjusting wheel 8' is not attached to the top of the adapter housing 4, but to the side surface of the adapter housing 4. housing 4, to which the swivel blade 6 is also pivotally attached.

As shown in Figures 20 and 21, the stop 81' for setting the maximum swivel angle a of the swivel knife 6 is not designed as a side flank of the adjusting wheel 8', which is designed to vary in height, viewed in the direction of the rotation axis D of the adjusting wheel 8', but as a jacket surface of an annular step 82' on a side flank of the adjusting wheel 8', which is designed eccentrically to a rotation axis Ds of the adjusting wheel 8'.

In this design variant of the adjusting wheel 8, the outer surface of the adjusting wheel 8' is also provided with a knurling 83' to facilitate the rotary operation.

As shown in particular in Figure 21, the imaginary center MA of the annular stop 81' forming the outer surface of the annular step 82' is offset by a distance a from the pivot point D of the adjusting wheel 8', as can also be clearly seen from the varying radial distance of the annular stop 81' from the knurling 83'.

As further shown in Figures 23 and 24, the maximum swivel angle a of the swivel knife 6 can be adjusted by turning the adjusting wheel 8'.

Accordingly, the stop 68 of the pivoting knife 6 serving as a counter stop is designed as an edge of the pivoting knife 6 facing the stop 81' in a stripping position of the pivoting knife 6.

Figure 23 shows a rotational position of the adjusting wheel 8' in which the opening 17, which remains in the working position of the pivoting knife 6 between the stripping cutting edges 52, 62 of the fixed knife 5 and the pivoting knife 6, is minimally open. This position is also shown in Figure 25.

Figure 24 shows a rotational position of the adjusting wheel 8' rotated by 180°, in which the opening 17, which remains in the working position of the pivoting knife 6 between the stripping cutting edges 52, 62 of the fixed knife 5 and the pivoting knife 6, is at its maximum size. This position is also shown in Figure 26. Figure 18 shows an intermediate position in which the adjusting wheel 8' is rotated by approximately 90°.

As shown in Figure 15, the adjusting wheel 8' is also fixed to the adapter housing 4 by means of a fitting screw 88'. To prevent an unintentional adjustment of the adjusting wheel 8, an O-ring 84' is also arranged between the side flank of the annular step 82' of the adjusting wheel 8' and the adapter housing 4 in this preferred embodiment.

Preferably, a web 86' is formed on the side flank of the adjusting wheel 8', in particular on a side flank of the step 82', as shown in Figures 20 to 22, which protrudes into a partially annular guide groove 58 of the fixed blade 5. The guide groove 58, also shown in Figure 16, and the web 86' which can be moved therein serve to limit the maximum angle of rotation of the adjusting wheel 8'.

In its extreme positions shown in Figures 25 and 26, the web 86' rests against a respective groove end of the partially annular guide groove 58.

To further improve the haptic detectability of the end positions of the adjusting wheel, the end regions of the stop 81' are preferably designed as flattened areas 87'.

List of reference symbols

2 screwdrivers

21 Handle

22 shaft

23 swivel head

3 Stripping and cutting tool

4 adapter housing

41 Shaft holder

42 Cable bed

43 Adjustment wheel holder

44 Axle mount

45 Spring clip holder

46 Edge

47 Threaded hole

5 fixed blades

51 Cutting edge

52 Stripping cutting edge

53 Bore

54 Bore

55 Guide slot

56 first side edge

57 second side edge

58 Guide groove

59 Screw holder

6 swivel knives

61 Cutting edge

62 Stripping cutting edge

63 Recording slot

64 Bore

65 Spring clip holder

66 first side edge

67 second side edge

68 stop 7 Operating button

71 first section

72 second section

73 stop

74 Recording slot

75 Bridge

8 Adjustment wheel

81 stop

82 Bottom

83 Knurling

8‘ Adjustment wheel

8T stop

82' step

83' knurling

84' O-ring

85' screw holder

86' jetty

87' flattening

88' fitting screw

9 Spring element

91 first spring clip

92 second spring clip

93 Torsion area

10 O-rings

11 Screw

12 clamping screw

13 Square nut

14 Swivel axis

15 Mother

16 Fixing screw

17 Opening h Height of the adjusting wheel

D axis of rotation

M center

Claims

Expectations

1 . Stripping and cutting tool (3) for stripping and cutting a cable, comprising

- an adapter housing (4) with a shaft receptacle (41) for fixing to a shaft, in particular to a shaft (22) of a screwdriver (2),

- a fixed blade (5) arranged on the adapter housing (4),

- a swivel blade (6) mounted on the adapter housing (4) so as to pivot relative to the fixed blade,

- wherein the fixed blade (5) and the pivoting blade (6) have a cutting edge (51, 61) serving to cut the cable on respective first side edges (56, 66), characterized in that

- the fixed blade (5) and the pivoting blade (6) have a stripping cutting edge (52, 62) serving for stripping the cable on respective second side edges (57, 67) facing away from the first side edges (56, 66).

2. Stripping and cutting tool (3) according to claim 1, characterized in that the pivoting knife (6) and the adapter housing (4) each have a stop (68, 73, 81, 81') for limiting a maximum pivoting angle (a) of the pivoting knife (6) from a starting position to a working position.

3. Stripping and cutting tool (3) according to claim 2, characterized in that the stop (81, 81') of the adapter housing (4) is adjustable for setting the maximum pivoting angle (a) of the pivoting knife (6).

4. Stripping and cutting tool (3) according to claim 3, characterized in that the stop (81, 81') of the adapter housing (4) is formed on an adjusting wheel (8, 8') rotatably fixed to the adapter housing, wherein the stop (81, 81') varies in its height (h) depending on the rotational position of the adjusting wheel (8, 8'), viewed in a direction perpendicular to a rotation axis of the pivoting knife (6).

5. Stripping and cutting tool (3) according to claim 3, characterized in that the stop (81) of the adapter housing (4) is designed as a side flank of the adjusting wheel (8), wherein the side flank varies in its height (h), viewed in the direction of a rotation axis (D) of the adjusting wheel (8), depending on the rotational position of the adjusting wheel (8).

6. Stripping and cutting tool (3) according to claim 4, characterized in that the height (h) of the stop (81) varies in stages.

7. Stripping and cutting tool (3) according to claim 4, characterized in that the height (h) of the stop (81) varies continuously.

8. Stripping and cutting tool (3) according to one of claims 2 to 6, characterized in that the stop (73) of the pivoting knife (6) is designed as the lower edge of an actuating button (7) of the pivoting knife (6) facing the stop (81) of the adapter housing (4).

9. Stripping and cutting tool (3) according to claim 4, characterized in that the stop (81') of the adapter housing (4) is designed as a jacket surface of an annular step (82') formed eccentrically to a rotation axis (D) of the adjusting wheel (8') on a side flank of the adjusting wheel (8').

10. Stripping and cutting tool (3) according to claim 9, characterized in that a web (86') formed on the side flank of the adjusting wheel (8'), in particular on a side flank of the step (82'), projects into a partially annular guide groove (58) of the fixed blade (5) which limits the maximum angle of rotation of the adjusting wheel (8').

11. Stripping and cutting tool (3) according to claim 9 or 10, characterized in that end regions of the stop (81') are designed as flattened areas (87').

12. Stripping and cutting tool (3) according to one of claims 9 to 11, characterized in that the stop (68) of the pivoting knife (6) is designed as an edge of the pivoting knife (6) facing the stop (81') of the adapter housing (4) in a stripping position of the pivoting knife (6).

13. Stripping and cutting tool (3) according to one of the preceding claims, characterized in that the fixed blade (5) is designed as an open a housing cover closing one side of the adapter housing (4). Stripping and cutting tool (3) according to one of the preceding claims, characterized in that the pivoting blade (6) is

Spring element (9) is held in the starting position. Stripping and cutting tool (3) according to one of the preceding claims, characterized in that in the working position of the pivoting knife (6) between the stripping cutting edges (52, 62) of the

A square or approximately square opening (16) remains between the swivel knife (6) and the fixed knife (5).