Manually operated cutting device having a ratchet mechanism

Abstract

A cutting device for the chipless cutting of a material comprises a cutting part and a supporting part. The cutting part and the supporting part are designed to be rotated with respect to one another about an axis of rotation between an open position and a closed position. A hand lever is articulated to the supporting part for pivoting about a pivot axis. A ratchet mechanism converts a back-and-forth motion of the hand lever into a continuous rotational motion of the cutting part toward the closed position. The ratchet mechanism includes a toothing and a drive pawl, which can be brought into an effective position with respect to the toothing. Furthermore, the cutting device comprises a coupling mechanism, which converts a one-time pivoting motion of the hand lever into a rotational motion of the cutting part. A separate coupling element transmits force from the hand lever to the cutting part.

Claims

1.-16. (canceled)

17. A cutting device (1) for chipless cutting of a material, comprising: a cutting part (3) having a cutter (2), and a supporting part (4), configured to support the material to be cut, wherein the cutting part (3) and the supporting part (4) are mounted for rotation with respect to one another about an axis of rotation (5) and are designed to be rotated with respect to one another about the axis of rotation (5) between an open position (0) and a closed position (S); a hand lever (6) and a ratchet mechanism (8), wherein the hand lever (6) is articulated to the supporting part (4) for pivoting about a pivot axis (7), and wherein the ratchet mechanism (8) is designed to convert a back-and-forth motion of the hand lever (6) about the pivot axis (7) into a continuous rotational motion of the cutting part (3) toward the closed position (S), and wherein, in order to bring about a transmission of force from the hand lever (6) to the cutting part (3), the ratchet mechanism (8) has toothing (9) and a drive pawl (10), which can be brought into an effective position with respect to the toothing; and a coupling mechanism (14) which is designed to convert a one-time pivoting motion of the hand lever (6) about the pivot axis (7) into a rotational motion of the cutting part (3) from the open position (0) into the closed position (S), wherein the coupling mechanism (14) has a coupling element (15) in order to bring about a transmission of force from the hand lever (6) to the cutting part (3) via the coupling element (15).

18. The cutting device according to claim 17, wherein the cutting device (1) is designed so that, during the transmission of force via the coupling element (15), the drive pawl (10) is in an effective position with respect to the toothing (9) and is in freewheeling operation.

19. The cutting device according to claim 17, wherein the coupling element (15) is articulated via a respective articulation point (16; 17) on the cutting part (3) and on the hand lever (6), in order to bring about the transmission of force from the hand lever (6) to the cutting part (3), and wherein one of the articulation points (16, 17) is variable in position, and wherein the one articulation point (16) is in a transmission position (U), in order to bring about the transmission of force from the hand lever (6) to the cutting part (3), and is designed to execute a swerving motion in response to a motion exerted by the hand lever (6) or the cutting part (3).

20. The cutting device according claim 19, wherein the one articulation point is held in the transmission position by the force of at least one spring element, wherein the at least one spring element is designed such that, when a predetermined maximum transfer force is exceeded, the at least one spring element releases a spring travel to allow a compensating motion of the one articulation point.

21. The cutting device according to claim 19, wherein the cutting device (1) comprises a shifting link (18) with a slotted link element (19.1) and a guide element (19.2) guided on it, wherein the one articulation point (16) is formed on the guide element (19.2), and wherein the slotted link element (19.2) has a stop (20) for the guide element (19.2), in order to hold the one articulation point (16) in the transmission position (U), wherein the slotted link element (19.2) further has a guide section (21) for a guided motion of the guide element (19.2), in order to permit the swerving motion of the one articulation point (16).

22. The cutting device according to claim 21, wherein the slotted link element (19.1) has an additional guide section (22), which can be used as a feed section, in order to move the guide element (19.2) against the stop (20).

23. The cutting device according to claim 21, wherein the shifting link (18) is integrated into the hand lever (6).

24. The cutting device according to claim 19, wherein the ratchet mechanism (8) has a retaining pawl (12) that can be brought into engagement with respect to the toothing (9), in order to block a motion of the cutting part (3) toward the open position (0), and wherein a resetting element (23) is provided, which is designed to bring the retaining pawl (12) into an unlocked position (E) with respect to the toothing (9), against the force of a spring element (25.1), such that the cutting part (2) automatically executes an opening motion into the open position (0) by the force of an additional spring element (25.2).

25. The cutting device according to claim 24, wherein the resetting element (23) is designed to be used as a guide (26) for the coupling element (15) in order, during the opening motion of the cutting part (3), to guide an accompanying motion of the coupling element (15) in such a manner that the one articulation point (16) is brought into the transmission position (U).

26. The cutting device according to claim 25, wherein the resetting element (23) has a projection (27) and is designed such that the projection (27) holds the retaining pawl (12) in the unlocked position (E), wherein a surface section of the projection (27) forms the guide (26) for the coupling element (15).

27. The cutting device according to claim 24, wherein the cutting device (1) is designed to bring the one articulation point (16) out of the transmission position (U), in order to change from force transmission via the coupling element (15) to force transmission via the drive pawl (10), in that the drive pawl (10) and the retaining pawl (12) are in an effective position with respect to the toothing (9) and the hand lever (6) is moved from an intermediate position (BZ1; BZ2; BZ3) between an initial position (A) and an extended position (B) towards the extended position (B) or into the extended position (B).

28. The cutting device according to claim 17, wherein the pivot axis (7) is arranged in a region of one end (31) of the hand lever (6), wherein the one end (31) of the hand lever (6) is turned toward the cutting part (3).

29. The cutting device according to claim 17, wherein the cutting device (1) is designed for the chipless cutting of the material to be cut by knife action and the cutter (2) is a knife blade.

30. A method for chipless cutting of material, comprising: providing the cutting device (1) according to claim 24, wherein the resetting element (23) of the cutting device (1) is operated manually, as a result of which the retaining pawl (12) of the cutting device (1) is brought into the unlocked position (E) and, in turn, as a result of this the cutting part (2) of the cutting device (1) executes an opening motion into the open position (0) by spring force and the coupling element (15) of the cutting device (1) automatically executes a motion accompanying the opening motion, wherein the motion of the coupling element (15) brings the one articulation point (16) into the transmission position (U) and thus the cutting device (1) is in a direct cutting mode, in which the transmission of force from the hand lever (6) to the cutting part (3) takes place via the coupling element (15).

31. A method for chipless cutting of a material, comprising: providing the cutting device (1) according to claim 27, wherein the cutting device (1) is in a direct cutting mode, in which a transmission of force from the hand lever (6) to the cutting part (3) of the cutting device (1) takes place via the coupling element (15) of the cutting device (1) and the drive pawl (10) and the retaining pawl (12) of the ratchet mechanism (8) of the cutting device (1) are in an effective position with respect to the toothing (9), and the cutting part (3) is already moved toward the closed position (S), as a result of which the hand lever (6) is in an intermediate position (BZ1; BZ2; BZ3) between the initial position (A) and the extended position (B), wherein the method comprises the step of moving the hand lever (6) from the intermediate position (BZ1; BZ2; BZ3) toward the extended position (A) or in the extended position (A), by which the one articulation point (16) is brought out of the transmission position (U) and thus the cutting device (1) is in a ratchet cutting mode, in which the transmission of force from the hand lever (6) to the cutting part (3) takes place via the drive pawl (10) and the toothing (9).

32. A method, comprising: cutting a plastic or plastic composite pipe to length with the cutting device according to claim 17.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0036] FIG. 1 shows a possible embodiment of a manually operated cutting device for the chipless cutting of material to be cut in an initial state, shown in a sectional view.

[0037] FIG. 2 to FIG. 5 show the cutting device of FIG. 1 in different positions to move from the initial state to a direct cutting mode.

[0038] FIG. 6 and FIG. 7 show the cutting device of FIG. 1 in different positions during a direct cutting operation, and

[0039] FIG. 8 and FIG. 9 show the cutting device of FIG. 1 in different positions to change from the direct cutting mode to a ratchet cutting mode.

DETAILED DESCRIPTION

[0040] FIG. 1 shows a possible embodiment of a manually operated or manually operable, as the case may be, cutting device 1 for cutting material to be cut in a sectional view. The cutting device 1 can be used for severing, in particular cutting to length, plastic pipes or plastic composite pipes. Such pipes are used, for example, in the heating and/or sanitary sector, for example as components of a drinking water line or heating line. In principle, the cutting device 1 can also be used for cutting branches or other biogenic material to be cut.

[0041] The cutting device 1 comprises, for example, a cutting part 3 with a cutter 2 and, in particular, a supporting part 4 serving as a support for the material to be cut, which, for example, assumes the function of a counterholder. Preferably, the supporting part 4 is designed as an anvil or has an anvil. Alternatively, the supporting part 4 itself can also be formed as a cutter or have a cutter. Preferably, the cutter 2 is a knife blade in order to cut the material to be cut by knife action.

[0042] Preferably, the cutting part 3 and the supporting part 4 are mounted for rotation with respect to one another, in particular mounted for rotation with respect to one another, about a common axis of rotation 5. Preferably, the cutting part 3 is rotatable relative to the supporting part 4 between an open position O (FIG. 4) and a closed position S about the axis of rotation 5. In FIG. 1, the cutting part 3 is in the closed position S. Furthermore, the sectional view of FIG. 1 is a longitudinal section of the cutting device 1 transverse to the axis of rotation 5.

[0043] Furthermore, the cutting device 1 comprises, for example, a hand lever 6 and a ratchet mechanism 8. Preferably, the hand lever 6 is articulated to the supporting part 4 for pivoting about a pivot axis 7. Preferably, the pivot axis 7 is allocated to a region of an end 31 of the hand lever 6, in particular a longitudinal end of the hand lever 6. Preferably, this end 31 is turned toward the cutting part 3.

[0044] Preferably, the ratchet mechanism 8 is designed to convert a back-and-forth motion of the hand lever 6 about the pivot axis 7 into a continuous rotational motion of the cutting part 3 toward the closed position S. For this purpose, the ratchet mechanism 8 preferably has toothing 9 and a drive pawl 10, which can be brought or is brought into an effective position with it, in order to bring about a transmission of force from the hand lever 6 to the cutting part 3 via it. Preferably, the ratchet mechanism 8 also comprises a retaining pawl 12, which can be brought or is brought into an effective position with the toothing 9, in order to retain the cutting part 3 against an opening motion toward the open position O.

[0045] Preferably, the toothing 9 is assigned to the cutting part 3. Preferably, the drive pawl 10 is assigned to the hand lever 6. Preferably, the retaining pawl 12 is assigned to the supporting part 4. For example, the toothing 9 is connected to the cutting part 3 in a rotationally fixed manner and/or is integrally formed on the cutting part 3. For example, the drive pawl 10 is mounted on the hand lever 6 for rotation about an axis of rotation 11. For example, the retaining pawl 12 is mounted on the supporting part 4 for rotation about an axis of rotation 13.

[0046] Preferably, a resetting element 23 is provided, which is designed to move the retaining pawl 12 out of an effective position of the toothing 9, such that the retaining pawl 12 then no longer has a locking effect with respect to the cutting part 3. For example, the resetting element 23 is formed as a resetting lever. Preferably, the resetting element 23 is mounted on the supporting part 4 for rotation about an axis of rotation 24. In FIG. 1, the resetting element 23 is in a rest position R. Preferably, the resetting element 23 does not perform any function in the rest position R.

[0047] Preferably, the hand lever 6 forms one of two handle legs 29, 30, which can be pivoted against each other, such that, for example, the cutting device 1 is formed in the manner of scissors or pliers with respect to its handle legs 29, 30. For example, the other handle leg 30 is firmly connected to or integrally formed on the supporting part 4 as a fixed leg, such that the handle legs 29, 30 execute a pivoting motion relative to each other about the pivot axis 7. In such a case, the retaining pawl 12 can also be allocated to the handle leg 30, which is formed as a fixed leg, and in particular is mounted on it for rotation about the axis of rotation 13. Preferably, the handle legs 29, 30 each have an end 32, 33, which in each case is turned away from the cutting part 3 and forms a free end, for example.

[0048] The cutting device 1 can also comprise a coupling mechanism 14, which is designed to convert a one-time pivoting motion of the hand lever 6 about the pivot axis 7 into a rotational motion of the cutting part 3 from the open position O to the closed position S. Thus, by means of the coupling mechanism 14, unlike in the case of the ratchet mechanism 8, there is no division of the cutting motion of the cutting part 3 into several operating motions of the hand lever 6; rather, by means of a one-time operating motion of the hand lever 6, a one-time cutting motion of the cutting part 3 is executed.

[0049] For this purpose, the coupling mechanism 14 preferably has a coupling element 15, such as a coupling rod, in order to bring about a transmission of force from the hand lever 6 to the cutting part 3 via it. Preferably, when force is transmitted via the coupling element 15, the drive pawl 10 is outside the flow of force, so there is no transmission of force via the drive pawl 10. Preferably, a direct drive connection between the hand lever 6 and the cutting part 3 is brought about via the coupling element 15.

[0050] Preferably, the coupling element 15 is articulated to the cutting part 3 on the one hand and to the hand lever 6 on the other hand via two articulation points 16, 17 spaced apart from each other, in order to bring about the transmission of force from the hand lever 6 to the cutting part 3. Preferably, the articulation point 17 allocated to the cutting part 3 is arranged at a distance from the axis of rotation 5, about which the cutting part 3 can be rotated relative to the supporting part 4. For example, the one articulation point 17 is above the axis of rotation 5 if the cutting part 3 is in the closed position S. For example, the one articulation point 17 is formed by a connecting pin, by which the coupling element 15 is connected for rotation to the cutting part 3.

[0051] Preferably, the articulation point 16 allocated to the hand lever 6 is variable in position, in that the articulation point 16 is designed, for example, to execute a swerving motion in response to a motion exerted by the hand lever 6 and/or the cutting part 3. Preferably, the articulation point 16 is in a transmission position U (FIG. 4) if the transmission of force from the hand lever 6 to the cutting part 3 takes place or is to take place, as the case may be, so that the cutting part 3 executes a cutting motion toward the closed position S.

[0052] In order to enable the swerving motion of the one articulation point 16, the cutting device 1 is provided with a shifting link 18, for example. Preferably, the shifting link 18 comprises a slotted link element 19.1 and a guide element 19.2 guided on it, which forms or has, as the case may be, the one articulation point 16. Preferably, the shifting link 18 is allocated to the hand lever 6, in particular integrated into the hand lever 6. The slotted link element 19.1 can be a separate component or formed on the hand lever 6.

[0053] As shown in particular in FIG. 2, the slotted link element 19.1 comprises, for example, a stop 20 for the guide element 19.2, in order to hold the one articulation point 16 in the transmission position U (FIG. 4). Furthermore, the slotted link element 19.1 can have at least one guide section 21 for a guided motion of the guide element 19.2, in order to allow the swerving motion of the one articulation point 16. An additional guide section 22 can also be provided, which can be used as a feed section to bring the guide element 19.2 into position against the stop 20.

[0054] Preferably, the slotted link element 19.1 is formed to be annular and the stop 20 and/or the guide section 21 and/or the additional guide section 22 is formed on circumferential sections of the inner circumference of the slotted link element 19.1. Preferably, the annular slotted link element 19.1 is open at a circumferential point, such that the guide element 19.2 can be inserted into the interior of the annular slotted link element 19.1 above it.

[0055] FIG. 2 further shows that the cutting device 1 can comprise a plurality of spring elements 25.1, 25.2, 25.3, 25.4, 25.5, in order to automatically move certain components of the cutting device 1 by means of spring force. Preferably, one of the spring elements 25.1, 25.2, 25.3, 25.4, 25.5, in particular the one spring element 25.1, which is also referred to below as the first spring element, is allocated to the retaining pawl 12.

[0056] Preferably, another one of the spring elements 25.1, 25.2, 25.3, 25.4, 25.5, in particular the one additional spring element 25.2, which is also referred to below as the second spring element, is allocated to the cutting part 3. Preferably, a third spring element 25.3 is allocated to the drive pawl 10. Preferably, a fourth spring element 25.4 is allocated to the coupling element 15, in particular to the one articulation point 17. Preferably, a fifth spring element 25.5 is allocated to the resetting element 23.

[0057] The cutting device 1 enables the chipless cutting of material to be cut by manual force, whereby two different operating modes, namely a direct cutting mode on the one hand and a ratchet cutting mode on the other, can be used. The mode of operation of the cutting device 1 is described below by way of example:

[0058] Preferably, the cutting device 1 is in an initial state prior to a cutting operation, in which the cutting device 1 can be present, for example, for the purpose of storage and/or transport. In the initial state, which is shown for example in FIG. 1, the cutting part 3 is in the closed position S and the hand lever 6 is in an initial position A. Preferably, in the initial position A, the hand lever 6 is pivoted close to the handle leg 30. Preferably, in the initial position A, the hand lever 6 is fixed in its position by a locking device (not shown in FIG. 1). Preferably, in the initial position A, the force of a spring element (not shown in the figures) acts as a resetting force or extension force, as the case may be, on the hand lever 6. For example, such spring element is formed as a leg spring, which is supported on the one hand against the hand lever 6 and on the other hand against the supporting part 4 and surrounds the pivot axis 7, for example.

[0059] Preferably, in the initial state, the resetting element 23 is in the rest position R, in which it does not exert any function on the retaining pawl 12. The retaining pawl 12 is thus in an effective position with respect to the toothing 9, in particular in engagement with respect to the toothing 9. In particular, the retaining pawl 12 is pressed with respect to the toothing 9 by the force of the first spring element 25.1. In the initial state, the drive pawl 10 can also be present in an effective position with respect to the toothing 9, for example engaging in the toothing 9. For example, the drive pawl 10 is pressed with respect to the toothing 9 by the force of the third spring element 25.3. In the initial state, for example, the guide element 19.2 is outside the stop 20.

[0060] By preferably manually unlocking the locking device of the hand lever 6, the hand lever 6 is automatically deflected by the force of the associated spring element (not shown in the figures) from the initial position A to the extended position B, wherein the cutting part 3 remains in the closed position S due to the locking effect of the retaining pawl 12. Preferably, the force of the fourth spring element 25.4 holds or largely holds, as the case may be, the coupling element 15 in its previous position, such that the guide element 19.2 remains out of contact against the stop 20, in particular in the region of an upper end of the slotted link element 19.1 turned toward the supporting part 4. The state of the cutting device 1 after unlocking the locking device is shown in FIG. 2. Preferably, in the extended position B, the hand lever 6 is in an extended position with respect to the one handle leg 30, in particular in a maximum extended position.

[0061] When the hand lever 6 is deflected from the initial position A to the extended position B, the drive pawl 10 is disengaged from the toothing 9. Preferably, the drive pawl 10 is in contact against a stop 35 of a stop part 34, which is, for example, firmly connected to the hand lever 6 or is integrally formed on it. Preferably, the stop 35 is dimensioned such that the motion of the drive pawl 10 is limited in such a manner that, in the extended position B of the hand lever 6, the stop 35 keeps the drive pawl 10 at a distance from the toothing 9. Preferably, the drive pawl 10 is pressed against the stop 35 or the toothing 9 by the force of the third spring element 25.3.

[0062] In order to then bring the cutting part 3 out of the closed position S, the resetting element 23 is brought from its rest position R into a functional position F, in particular pivoted about the axis of rotation 24. This state is shown in FIG. 3. The resetting element 23 is located there in the functional position F, in which the resetting element 23 has brought the retaining pawl 12 out of its locked position V (FIG. 2) with respect to the toothing 9 and is then located in an unlocked position E.

[0063] Preferably, this is brought about by a projection 27 on the resetting element 23, which has a surface section 28 of, for example, a circumferential surface that forms a driver, in order to entrain and move the retaining pawl 12 from the locked position V to the unlocked position E and, in particular, to hold it. Preferably, the projection 27 has an additional function; for example, the projection 27 serves as a guide 26 for the coupling element 15 in the course of its motion from the position in accordance with FIG. 3 to a position against the stop 20, which can be seen in FIG. 4.

[0064] As can be seen, for example, in FIG. 3, a base body 40 can be provided between the one handle leg 30 and the supporting part 4. The base body 40 can be firmly connected to the one handle leg 30 and/or firmly connected to the supporting part 4. In particular, the one handle leg 30 is integrally formed on the base body 40 and/or the supporting part 4 is integrally formed on the base body 40.

[0065] By unlocking the retaining pawl 12 and by disengaging the drive pawl 10 from the toothing 9 due to the pivoting motion of the hand lever 6 into the open position B, the cutting part 3 is free to move and is automatically moved from the closed position S to the open position O by the force of the second spring element 25.2. Preferably, the open position O is the largest possible extended position of the cutting part 3 away from a support section 38 of the supporting part 4, which is opposite the cutter 2 of the cutting part 3. Preferably, in the open position O, the cutting part 3 is brought into contact via a stop 36 against a counter stop 37 arranged on the supporting part 3.

[0066] The state of the cutting device 1 that is then reached is shown in FIG. 4. In the course of the opening motion of the cutting part 3 into the open position O, the coupling element 15 has also executed a motion, which was forcibly guided by the guide 26 of the resetting element 23 in such a manner that the guide element 19.2 comes into contact against the stop 20 and thus the one articulation point 16 is in a transmission position U. In the transmission position U, force can then be transmitted from the hand lever 6 to the cutting part 3 via the coupling element 15.

[0067] By transferring the one articulation point 16 to the transmission position U, the cutting device 1 is in the direct cutting mode. In order to carry out a cut of the material to be cut in this mode, it is preferable to move the resetting element back to the rest position. Preferably, this can be achieved by releasing the resetting element 23, which was previously held, for example, by hand, and moving it automatically into the rest position R by the force of the fifth spring element 25.5. Preferably, the retaining pawl 12 is then moved back to the locked position V by the force of the first spring element 25.1.

[0068] In the course of the present direct cutting mode, a manual operation of the hand lever 6 from the open position B in the direction of the extended position A then causes a transmission of force from the hand lever 6 directly to the cutting part 3 via the coupling element 15, by which the cutting part 3 is moved from the open position O toward the closed position S.

[0069] FIG. 6 shows an example of a state in which the hand lever 6 has been moved from the extended position B in the direction of the initial position A and is thus in a first intermediate position BZ1. In a corresponding manner, the cutting part 3 has been moved from the open position O in the direction of the closed position S and is then in a first intermediate position OZ1. FIG. 7 shows the state in which the direct cutting operation is completed and the hand lever 6 is once again in the initial position A and, accordingly, the cutting part 3 has been moved to the closed position S.

[0070] As shown in FIGS. 6 and 7, the retaining pawl 12 and the drive pawl 10 can each be in an effective position with respect to the toothing 9. Due to the transmission of force via the coupling element 15, the drive pawl 10 is in a freewheel position with respect to the toothing 9. Likewise, the retaining pawl 12 is in a freewheel position with respect to the toothing 9.

[0071] FIGS. 8 and 9 illustrate the mode of operation of the cutting device 1 when changing from direct cutting mode to ratchet cutting mode. In order to carry out such a change, the hand lever 6 is moved from the open position A in accordance with FIG. 5 in the direction of the one handle leg 30 and brought into a second intermediate position BZ2 and, by transmitting force via the coupling element 15, the cutting part 3 is pivoted from the open position O into a second intermediate position OZ2.

[0072] In order to then change from the present direct cutting mode to the ratchet cutting mode, the hand lever 6 is released somewhat, such that the hand lever 6 is automatically pivoted back toward the open position B, for example into a third intermediate position BZ3, by the force of the associated spring element (not shown in the figures). Since the retaining pawl 12 is in the locked position V with respect to the toothing 9, there is no opening motion of the cutting part 3 in the direction of the open position O. Rather, the cutting part 3 remains in the intermediate position OZ2, as shown in FIG. 8.

[0073] Due to the pivoting motion of the hand lever 6 in the direction of the stop position B and due to the cutting part 3 remaining motionless, the stop 20 of the slotted link element 19.1 is brought out of the stop position against the guide element 19.2, and thus the one deflection point 16 leaves the transmission position U. As a result, the transmission of force from the hand lever 6 to the cutting part 3 then no longer takes place via the coupling element 15; rather, the transmission of force takes place via the drive pawl 10 if the hand lever 6 is operated in the direction of the initial position A. Due to the configuration of the slotted link element 19.1, the guide element 19.2 can execute a swerving motion in the slotted link element 19.1, such that, in the ratchet cutting mode, it is ensured that there is no transmission of force via the coupling element 15.

[0074] The mode of operation described by way of example makes it possible for the cutting device 1 to be in the direct cutting mode first if the cutting device 1 is opened, that is, the locking of the hand lever 6 is released and the hand lever 6 then pivots automatically into the open position B (FIG. 5). The direct cutting mode enables a rapid feed of the cutting part 3 against a cutting material placed between the cutting part 3 and the support section 38 of the supporting part 4, in that the cutting part 3 can be brought one time from the open position O into the contact position against the cutting material by a one-time pivoting motion or operation, as the case may be, of the hand lever 6 about the pivot axis 7.

[0075] Depending on the required cutting force, it is then possible either to remain in the direct cutting mode or to switch to the ratchet cutting mode as described above. In this respect, the cutting device 1 has the advantages of cutting material to be cut over a wide range of a cutting force that can be applied. At the same time, the cutting operation can be carried out rapidly, even for relatively compact material to be cut, since the direct cutting mode enables a rapid feed of the cutting part 3 from the open position O to rest against the material to be cut.

[0076] For example, the cutting device 1 enables plastic pipes or plastic composite pipes with a diameter of up to approximately 35 mm, in particular up to 35, preferably up to 32 mm to be severed in direct cutting mode. The ratchet cutting mode allows plastic pipes or plastic composite pipes with a diameter of up to approximately 75 mm, in particular up to 75 mm, to be cut or cut to length, as the case may be.

[0077] In the present description, reference to a specific aspect or a specific embodiment or a specific configuration means that a specific feature or property that is described in connection with the respective aspect or the respective embodiment or the respective configuration is at least contained therein, but does not necessarily have to be included in all aspects or embodiments or configurations.

[0078] The use of any or all examples or exemplary language in the text is intended only to illuminate the invention and is not a limitation with respect to the scope of the invention, unless otherwise claimed.

LIST OF REFERENCE SIGNS

[0079] 1 Cutting device [0080] 2 Cutter [0081] 3 Cutting part [0082] 4 Supporting part [0083] 5 Axis of rotation [0084] 6 Hand lever [0085] 7 Pivot axis [0086] 8 Ratchet mechanism [0087] 9 Toothing [0088] 10 Drive pawl [0089] 11 Axis of rotation [0090] 12 Retaining pawl [0091] 13 Axis of rotation [0092] 14 Coupling mechanism [0093] 15 Coupling element [0094] 16 Articulation point [0095] 17 Articulation point [0096] 18 Sliding block guide [0097] 19.1 Sliding block [0098] 19.2 Guide element [0099] 20 Stop [0100] 21 Guide section [0101] 22 Additional guide section [0102] 23 Resetting element [0103] 24 Axis of rotation [0104] 25.1 Spring element (first spring element) [0105] 25.2 Additional spring element (second spring element) [0106] 25.3 Third spring element [0107] 25.4 Fourth spring element [0108] 25.5 Fifth spring element [0109] 26 Guide [0110] 27 Projection [0111] 28 Surface section [0112] 29 Handle leg [0113] 30 Handle leg [0114] 31 End [0115] 32 End [0116] 33 End [0117] 34 Stop part [0118] 35 Stop [0119] 36 Stop [0120] 37 Counter stop [0121] 38 Support section [0122] 40 Base body [0123] S Closing position (cutting part 3) [0124] O Open position (cutting part 3) [0125] OZ1 Intermediate position (cutting part 3) [0126] OZ2 Intermediate position (cutting part 3) [0127] A Initial position (hand lever 6) [0128] B Extended position (hand lever 6) [0129] BZ1 Intermediate position (hand lever 6) [0130] BZ2 Intermediate position (hand lever 6) [0131] BZ3 Intermediate position (hand lever 6) [0132] E Unlocked position (retaining pawl 12) [0133] V Locked position (retaining pawl 12) [0134] U Transmission position (articulation point 16) [0135] R Rest position (resetting element 23) [0136] F Function position (resetting element 23)