Cutting device

Abstract

To provide a cutting device 10 such as a horticulture cutting device comprising: first and second cutting members (12, 14) made movable relative to each other; first and second grip members (16, 18) made movable relative to each other; at least one drive unit (20) intended to support at least the motions of the second cutting member (14) relative to the first cutting member (12) when at least one is in an active state; and spring members (28, 50, 36, 68 and 424).SOLUTION: It is proposed that spring members (28, 50, 36, 68 and 424) are constituted as a braking member (28) for switching at least one automatic change-over type clutch unit (22) intended for connection-releasing a drive unit (20) when the drive unit (20) is in one active state, in which the drive unit is inactive.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] Cutting devices, for example horticultural cutting devices, have already been proposed. [Background technology]

[0002] From US Pat. No. 5,399,433 a cutting device is already known which has two cutting edges movable relative to one another, two gripping members movable relative to one another and a drive unit intended to support the movement of the second cutting edge relative to the first cutting edge when in an operating state. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] German Patent No. 102010016296B4 Summary of the Invention

[0004] A cutting device, for example a horticultural cutting device, is disclosed, having first and second cutting members movable relative to one another, first and second gripping members movable relative to one another, and at least one drive unit intended for at least supporting the movement of the second cutting member relative to the first cutting member in at least one operating state. The cutting device has a spring member. The spring member may be configured as a brake member, a release spring, a force sensor member, a return member, a compression or tension spring, a spiral spring, a tension spring, a prestress member, etc. It is proposed that the cutting device has at least one automatically switching clutch unit intended for decoupling the drive unit at least in an operating state in which the drive unit is deactivated.

[0005] Alternatively, another manual machine tool is also disclosed having first and second working members, e.g. gripping or pliers members, movable relative to one another, first and second gripping members movable relative to one another, and at least one drive unit intended for at least supporting the movement of the second working member relative to the first working member in at least one operating state, the manual machine tool having at least one automatically switching clutch unit intended for decoupling the drive unit at least in an operating state in which the drive unit is deactivated. It is further proposed that at least one automatically switching clutch unit is intended for decoupling the drive unit in at least one operating state in order to realise a fully manual operation. It is further proposed that at least one automatically shifting clutch unit is configured as a freewheeling clutch. Furthermore, it is proposed that the at least one automatically shifting clutch unit has at least one clamping body. It is further proposed that the at least one automatically switching clutch unit has at least one cage for accommodating the clamping body and a braking member intended for slowing down the cage in at least one operating state. Furthermore, a rope winch drivable by a drive unit and at least one rope stretched at least partially between each gripping element and at least partially wound and / or capable of being wound on the rope winch are proposed. It is further proposed that the at least one automatically switching clutch unit is at least partially integrated in the at least one rope winch. Furthermore, a spring element is proposed which is configured, for example, as a spiral spring and which is intended for tensioning the rope in at least one operating state and which is coupled to the rope winch. Furthermore, at least one gear unit is proposed which is arranged on a first one of the gripping members. It is further proposed that the drive unit and the transmission unit are arranged spatially between the cutting member and the at least one automatically switching clutch unit. It is further proposed that at least one transmission unit has at least two gear stages, between which at least one automatically shifting clutch unit is arranged. Furthermore, at least one force sensor is proposed which is integrated into a second one of the gripping members. In addition to this, a method of activating the cutting device is proposed, whereby a drive unit is connected to a closing mechanism of the cutting device when a defined operating force is exceeded. In addition to this, a method step is proposed in which the drive unit is automatically stopped when the end position of the cutting device is reached and is temporarily driven against the drive direction in order to open the clutch unit.

[0006] It is further proposed that the cutting device is configured to recognize an object between the gripping members and switch off the support action. It is further proposed that a sensor for recognizing objects is arranged on the first or second grip member, for example on the inner grip surface of the first or second grip member facing the other grip member in each case. It is further proposed that sensors, e.g. force sensors and / or stroke sensors, are arranged on the first and second gripping members in order to recognize the need for movement support, so that the cutting device switches off the support action at least when an object is placed between the respective gripping members. It is further proposed that a force transmission member is arranged between the second cutting member and the second gripping member, which is operatively connected to the drive unit and arranged to be movable relative to the second gripping member in order to define the movement support, e.g. to define the movement support being on or off, e.g. non-rotatably connected to the second cutting member. It is further proposed that this relative movement is a pivoting movement of the force transmitting member relative to the second gripping member. It is further proposed that the second gripping member has at least one relative movement limiting member. Furthermore, it is proposed that sensors, for example force sensors and / or stroke sensors, detect the relative movement. It is further proposed that the sensor comprises a spring and a switch as well as a support movement adjusting member, which is arranged, for example, on the inner grip surface of the first or second gripping member. It is further proposed that at least one of the gripping members is configured in a skin-pinching-resistant manner, for example at least partially resiliently, rounded and / or chamfered, at least on the inner grip surface.

[0007] It is further proposed that a protection device is arranged between each of the gripping members, between the rotary joint connecting the gripping members and an opening spring arranged between the gripping members. It is further proposed that the protective device forms a shielding device for accommodating cables of the cutting device, e.g. energy supply cables and sensor cables, and / or for shielding an intermediate space bounded by the gripping member, the rotary joint and the opening spring, e.g. in order to avoid incorrect positioning of at least one of the operator's limbs in this intermediate space.

[0008] Further disclosed is a cutting device, e.g. a horticultural cutting device, having first and second cutting members movable relative to each other, first and second gripping members movable relative to each other, an opening spring arranged between the gripping members, at least one drive unit intended for at least supporting movement of the second cutting member relative to the first cutting member in at least one operating state, and at least one drive force transmission member operatively connected to the drive unit in the at least one operating state. It is proposed that the drive force transmission member is arranged inside the opening spring. It is further proposed that the drive force transmission member is a rope. It is further proposed that the rope be formed from polyethylene, for example ultra-high molecular weight polyethylene. It is further proposed that at least one of the gripping members is arranged with a guiding member, for example a guiding sleeve, for guiding the drive force transmission member in a low-friction and / or low-wear manner. It is further proposed that the opening spring has at least one guiding element for low-friction guiding of the drive force transmission element. Furthermore, it is proposed that the drive force transmission member is arranged in a contactless manner inside the opening spring. It is further proposed that the opening spring is a bar spring, for example a double bar spring. Furthermore, it is proposed that the opening spring is configured to seal the hollow space formed thereby, for example against dust and / or moisture. It is further proposed that the end of the opening spring is arranged in a notch in the gripping member. Furthermore, it is proposed that the cutting device allows for manual operation as well as manual and machine-assisted operation.

[0009] It is further proposed that the cutting device comprises a drive unit, a transmission unit, a clutch unit, a return unit and a drive member of the drive force transmission member arranged in this order on the surface or inside of the first gripping member, and there is no separate transmission between the clutch unit and the drive member. It is further proposed that the drive member non-rotatably connects at least one rotating component of the clutch unit and / or the return unit, for example non-rotatably connecting an inner rotating member of the clutch unit with a rotating body of the return unit. It is further proposed that the inner rotating member of the clutch unit and the rotating body of the return unit are non-rotatably connected to one another at least in a frictional and / or positively-locking manner. It is further proposed that the inner rotating member of the clutch unit be made of metal and the rotating body of the return unit be made of plastic. It is further proposed that the drive member is connected in a form-fitting manner to the clutch unit and / or the return unit via a polygonal profile. It is further proposed that the return unit and the clutch unit are at least partially accommodated in a common housing. It is further proposed that the fixing member fixes the clutch unit and the return unit to the housing via a retainer for receiving a clamping body of the clutch unit. It is further proposed that the planetary carrier of the transmission unit is a component of the clutch unit, for example an outer rotating member of the clutch unit.

[0010] Furthermore, an assembly method is proposed for assembling at least a prestressed return unit for a cutting device, the return unit having a spring member fixedly connected to a housing and a rotating body and at least one part of an automatically switching clutch unit, for example having at least one inner rotating member, a cage for receiving a clamping body and a brake member, and comprising at least the following steps: - The return unit is fixed to the housing of the clutch unit via a fixing member; - A prestress is applied to the spring member by rotating the rotor, An assembly aid is temporarily arranged, for example between the housing and the inner rotating member, which fixes the housing to the rotating body so that it cannot rotate. Furthermore, an assembly method is proposed which comprises at least the following further method steps: the prestressed return unit is coupled to a drive force transmission member of the cutting device, In order to transfer the prestress of the prestressed reset unit to the drive force transmission member, for example in order to prestress the drive force transmission member with a reset force, the assembly aid is removed. Furthermore, an assembly method is proposed which comprises at least a first of the following further method steps: - an outer rotating member of the clutch unit is rotatably connected to an inner rotating member of the clutch unit via a connecting member and fixed in an axial direction; The outer rotating member, configured as a planetary carrier, is connected to the transmission unit.

[0011] Further, a blocking device is proposed for a battery-powered manual machine tool, such as a battery-powered cutting device, e.g. garden scissors, having first and second cutting members movable relative to one another, the blocking device releasing the charging interface when the blocking device is in a first position blocking operation and / or tool movement of the manual machine tool and blocking and / or covering the charging interface when the blocking device is in a second position releasing operation and / or tool movement of the manual machine tool. It is further proposed that the blocking device is configured as a mechanical blocking device. Furthermore, it is proposed that the blocking device has a slide switch which releases or blocks and / or covers the charging interface. It is further proposed that the blocking device has a locking member intended for mechanically blocking or releasing a tool movement, e.g. in the form of a relative movement of first and second cutting members of a manual machine tool relative to one another. It is further proposed that the charging interface is configured as at least a USB charging interface. It is further proposed that the blocking device, when in the second position, is intended to isolate the charging interface from dirt. It is proposed that when the blocking device is in the second position it is intended to seal the charging interface, for example hermetically sealing it against water and / or dust.

[0012] Furthermore, a cutting device, e.g. a horticultural cutting device, is proposed having at least one first and one second cutting member that can be pivoted relative to one another about a rotation axis, the cutting members being connected to one another via at least one connecting member arranged along the rotation axis. Regardless of the connecting member, e.g. regardless of the clamping force of the connecting member, a defined mutual pressing force F of the cutting members is provided. an It is proposed that a control device be provided which triggers the rotation of the rotor in the direction of the axis of rotation. It is further proposed that the control device preferably comprises a spacer element surrounding the coupling element, for example in the form of a sleeve. It is further proposed that the length I of the spacer element in the direction of the axis of rotation corresponds at least to the sum of the width dimensions b, b of both cutting elements along the axis of rotation. Furthermore, the control device is adapted to apply a mutually defined axial force F ax It is proposed to have a resilient member, e.g. a spring member, preferably a wave washer, which biases the rotation axis along the axis of rotation. It is further proposed that the elastic member is arranged such that it is at least indirectly supported along the rotation axis by a housing of the cutting device, for example by a grip housing of the gripping member, and / or at least indirectly supported by a spacer member. It is further proposed that the elastic member is intended as a friction adjusting member for adjusting the friction between each cutting member. Furthermore, it is proposed that the elastic element is configured as an overload protection element of the cutting device in order to prevent plastic deformation of the cutting element at least in a partial area when the cutting device is operated or to enable opening of the cutting element at least in a partial area when the cutting device is operated. It is further proposed that the control device at least rotationally decouples the coupling member to the cutting member, for example in a detent manner. It is further proposed that the connecting element is screwable into a rotationally fixed receiving part and / or is at least integrally formed with the spacer element.

[0013] Furthermore, a cutting element for gardening scissors is proposed having a cutting blade with a receiving portion for coupling with the cutting element receiving portion of the gardening scissors, the cutting element having an insertion aid for inserting the cutting element into the cutting element receiving portion of the gardening scissors. It is further proposed that the insertion aid is configured as an inclined and / or circular surface, for example configured as an inclined and / or circular surface that is not equivalent to a purely deburred edge. Furthermore, the inclined surface 30 ° smaller than, for example 15 °, especially preferably 5 Angle smaller than ° Degree It is proposed to have against the cutting surface of the cutting member. It is further proposed that the insertion aid extends at least substantially between the end of the cutting member facing away from the tip of the cutting member and the recess for fixing the cutting member in the cutting member receiving part. It is further proposed that the insertion aid is configured for at least indirectly expanding an elastic member arranged in the cutting member receiving portion. It is further proposed that the cutting elements are replacement cutting elements for garden scissors. It is further proposed that the cutting member has at least one form-fitting member for non-rotatable connection with a lever of the garden scissors which is connectable with a grip member of the garden scissors. Furthermore, a cutting device, particularly preferably battery-operated garden scissors, is proposed which has a first cutting member of such type and a second cutting member of such type. The cutting device is adapted to have a defined clamping force F between the first cutting member and the second cutting member. an and the insertion aid is at least intended for expanding the control device when replacing the cutting member. Furthermore, the cutting device allows for manual operation as well as manual and machine-assisted operation.

[0014] The cutting device is preferably configured as scissors, particularly preferably as horticultural scissors. Two cutting blades movable relative to one another are preferably pivotally supported relative to one another. By "horticultural cutting device" in the present context is meant, for example, a cutting device intended for use on plants. This is to be understood as a cutting device intended for cutting plants, hedges, shrubs, branches and / or other objects that may be meaningful to a person skilled in the art. By "cutting member" in the present context is meant, for example, a member of the cutting device intended for direct contact with the object to be cut. This is preferably understood as a member intended for directly cutting the object to be cut. In this case, it is conceivable in principle that at least one of the cutting members is configured passively, for example as an anvil and / or a passive cutting edge. However, at least one cutting member preferably has an active cutting edge intended for active cutting, for example a blade. Furthermore, by "grip member" in this context is meant, for example, a member forming at least one part of a hand grip. This is preferably understood as the member which is at least partially gripped by the operator during actuation. Preferably, during actuation, both gripping members are gripped by the operator, for example with the same hand. "Supporting the movement of the second cutting member relative to the first cutting member" is to be understood in the present context as meaning that a force is generated by the drive unit, which for example acts at least partially in the same sense as the operating force. This is preferably understood as meaning that a manual force, which for example causes a closing movement of the cutting members relative to one another, for example in at least one operating state, is supported by a force additionally generated by the drive unit.

[0015] An "automatically switching clutch unit" is intended in this context to mean a clutch unit which is operated without an external, e.g. electrical, switching signal, e.g. from a control unit. This is preferably understood to mean a clutch unit which is operated without an explicit switching signal, e.g. to switch between the respective clutch states. This is preferably understood to mean a clutch unit which is operated on the basis of mechanical influencing factors. This is particularly preferably understood to mean a clutch unit which is operated, e.g. depending on at least one parameter of the drive side and / or the driven side. The clutch unit can therefore be designed, for example, as speed-operated, torque-operated, direction-operated and / or force-flow-operated. Furthermore, in this context, "discoupling of the drive unit" is intended to mean, for example, discoupling of the drive unit from the closing mechanism of the disconnecting device.

[0016] The design of the disconnecting device according to the invention allows for a preferred decoupling of the drive unit, which in turn allows for a preferred light manual actuation of the disconnecting device. Furthermore, it has the advantage that a clutch unit can be provided which is preferably operated without an electrical switching signal, which in turn makes it possible to dispense with a control unit for controlling the clutch unit, among other things. This in particular allows for a particularly reliable clutch unit to be provided, for example a clutch unit which is designed so that it can be operated independently of an energy supply.

[0017] "Fully manual operation" is intended in this context to mean, for example, an operating state in which the cutting device operates without the support of a drive unit. This is preferably understood as an operating state in which the cutting device operates only by the active force of the operator. This is particularly preferably understood as an operating state in which the drive unit is decoupled and therefore is not available to support the movement of the second cutting member relative to the first cutting member. This makes it possible, for example, to allow manual operation of the cutting device with a preferably light effort. This makes it possible, for example, to realize that the cutting device can be used preferably without a drive unit, for example in the absence of an energy supply and / or for light cutting tasks.

[0018] A "freewheeling clutch" is understood in this context to mean an automatically switching clutch, which is configured, for example, in a directionally and / or force-flow-operated manner. The freewheeling clutch is preferably at least directionally operable. For this purpose, the freewheeling clutch is preferably intended for opening and / or closing, for example, depending on the direction of rotation of the driving side and / or the driven side of the clutch unit and / or depending on the direction of force application on the freewheeling clutch. With respect to the direction of force application, it is possible, for example, to distinguish whether a force acts on the freewheeling clutch from the driving side or from the driven side. The freewheeling clutch is preferably intended for opening or closing the drive unit in at least one operating state, for example, depending on the direction of rotation of the driving side and / or the driven side and / or depending on the direction of force application on the freewheeling clutch. This makes it possible, for example, to provide a particularly preferred automatically switching clutch unit. For example, it makes it possible to enable manual operation of the disconnecting device with a preferably light effort. This has the advantage that a particularly reliable clutch unit is provided.

[0019] A "clamping body" is understood in this context to mean an element of a clutch unit which is intended for clamping between two mutually rotatably supported rotating members of the clutch unit, for example in at least one operating state, for example in the closed state of the clutch unit. In the clamped state, the clamping body is preferably connected in a positive manner in the direction of rotation with one rotating member and in a force-locking manner in the direction of rotation with the other rotating member, for example in a friction-locking manner. This is preferably understood as an element which is intended for non-rotatably connecting the rotating members of the clutch unit to one another or for decoupling the rotating members of the clutch unit with respect to a circumferential movement relative to one another, for example depending on the operating state of the clutch unit. The clamping body is preferably clamped between the respective rotating members when the clutch unit is in the closed state. At least one of the rotating members of the clamping unit preferably has a ramp, by means of which the radial distance between the respective rotating members is changed. When the clamping body moves into the area of ​​smaller radial distance, the rotational entrainment of the rotating members without a ramp takes place by friction. If the clamping bodies move into the area with a wide radial distance, the friction is insufficient and therefore no rotary entrainment of the rotating member without a ramp takes place. Various clamping bodies are conceivable as would be obvious to a person skilled in the art, but it is preferred that the clamping bodies are at least partially cylindrical or at least partially spherical. This makes it possible, for example, to provide a particularly favorable automatic clutch unit. This makes it possible, for example, to provide a favorable freewheeling clutch that is simple in design. This has the advantage that a particularly reliable automatic clutch unit can be provided.

[0020] The clutch unit preferably has a plurality of clamping bodies accommodated in a same cage. The cage preferably accommodates the clamping bodies in accommodation areas separated from one another. The brake member is preferably intended for increasing the inertia of the cage in at least one operating state. The brake member is preferably intended for preventing unintentional rotation of the cage. It is particularly preferred that the brake member is intended for preventing rotation of the cage until a defined force action is applied. The brake member is preferably supported elastically. For example, the brake member is pressed against the cage with a defined force. "Cage" is to be understood in the present context as meaning, for example, a member of the clutch unit intended for positioning and / or guiding at least one clamping body, for example in the circumferential direction. The cage is preferably intended for distributing the clamping bodies at a distance from one another in the circumferential direction, for example evenly over the circumference. It is particularly preferred that the cage is intended for guiding the clamping bodies relative to one another in the circumferential direction, whereby, for example, a preferably defined movement of the clamping bodies can be realized. It can be ensured, for example, in the case of several clamping bodies, that the clamping bodies undergo identical movements in the circumferential direction. It has the advantage that a controlled clamping of the clamping bodies is possible. Furthermore, unintended movements of at least one clamping body can be avoided by means of the brake element. For example, unintended clamping can be prevented in this way. It can also be ensured thereby that the clamping bodies only rotate when a force is applied to the positively-locking rotating element of the clutch unit. For example, the brake element can ensure that the clutch unit is released. It has the advantage that, via the brake element, it can be ensured that the clamping bodies remain stationary during the release movement of the clutch unit, thereby enabling the clutch unit to be released.

[0021] The rope is preferably fixedly fixed to one gripping member and is attached to the other gripping member via a rope winch. Via the rope winch, for example, the free length of the rope can be changed. The rope winch is preferably configured to be drivable by the drive unit via a clamping unit. The rope winch is preferably configured to be decoupled from the drive unit via a clutch unit in at least one operating state. It is particularly preferred that the rope winch forms the driven side of the clutch unit. "Rope winch" is to be understood in the present context as meaning, for example, a rope drum, for example a cylindrical rope drum, which is configured to be drivable by the drive unit in at least one operating state. As a result, a preferred force action of the drive unit can be realized. For example, it is possible to support the movement of the second cutting member relative to the first cutting member in a simple design. There is thus the advantage that the operator can be supported by the drive unit during the closing movement. Furthermore, a preferably high torque can be provided by the force action of the drive unit on the gripping members. As a result, the power of the drive unit can be kept low.

[0022] It is further proposed that at least one rope is stretched between the respective gripping elements in the area between the gripping area of ​​the gripping elements and the rotary joint at which the respective gripping elements are arranged to be pivotable relative to one another. The rope is preferably stretched between the respective gripping elements in the vicinity of the rotary joint, for example closer than 10 cm, preferably closer than 8 cm, to the rotary joint. "Grip area" is to be understood in the present context as meaning for example the area of ​​the gripping elements where the gripping elements are normally held by the operator. This has the advantage that the operator is prevented from being bothered by the rope. Furthermore, the rope can be preferably installed short. This has the advantage that the rope winch can for example be installed compactly. Furthermore, a fast closing of the cutting device can be made possible with a low number of rotations of the rope winch.

[0023] It is further proposed that the cutting device has at least one spring element, which is configured, for example, as a spiral spring and is intended for tensioning the rope in at least one operating state, connected to the rope winch. The spring element is preferably intended for ensuring tension in the rope. The spring element is preferably intended for biasing the rope winch with a force, for example with a circumferential force. It is particularly preferred that the spring element is intended for exerting a tensile force on the rope via the rope winch. The rope can be kept tensioned, for example, via the spring element. The spring element preferably has a spring force lower than the spring force of an opening spring. By means of the spring element, for example, tension in the rope can be guaranteed even during a completely manual operation. In this way, there is the advantage that unintentional entanglement of the rope can be prevented. Furthermore, winding of the rope can be guaranteed without drive.

[0024] "Gear unit" is understood in this context to mean a variable-speed gear unit having a gear ratio of, for example, more than 2, preferably more than 10, particularly preferably more than 50. A favorable and compact design can thereby be achieved. Furthermore, a particularly favorable weight distribution can thereby be achieved. For example, the weight of the gear unit can be arranged directly in the area of ​​the operator's hands. This in turn allows for a high level of operating comfort. Furthermore, in this way, a feeling of use that is at least similar to that of, for example, conventional manually operated garden scissors can be achieved.

[0025] The force sensor is preferably connected to the gripping area of ​​the second gripping member. It is particularly preferred that the gripping area is movably supported relative to the body of the second gripping member. The force sensor is preferably intended for sensing the force acting on the second gripping member, for example relative to the first gripping member. The force sensor may preferably be intended not only for detecting the exact force, but also for detecting the exceeding of a limit force.

[0026] Furthermore, a method for operating the cutting device is proposed. It is proposed that the drive unit is connected to the closing mechanism of the cutting device when a defined operating force is exceeded. This makes it possible to provide a convenient and comfortable cutting device. Furthermore, it can be realized that the drive unit is only connected during heavy cutting operations, for example. This makes it possible to keep energy consumption low.

[0027] "Drive direction" here is understood to mean, for example, the direction of rotation of the drive unit, in which the drive unit rotates during normal operation, for example to support a cutting movement, which has the advantage that a quick opening of the cutting device is possible, for example, which allows for a favorable and intuitive operation, and which reliably allows the opening of the clutch unit.

[0028] Alternatively, it is proposed that the drive unit is automatically deactivated when the end position of the cutting device is reached and that the clutch unit is automatically disengaged when the rotational movement of the drive unit stops, which has the advantage that a quick opening of the cutting device is possible, for example, which allows for a convenient and intuitive operation.

[0029] A blocking device for a battery-powered manual machine tool, in particular for a battery-powered cutting device, is disclosed. It is proposed that the blocking device releases the charging interface when the blocking device is in a first position, in which the blocking device blocks the operation and / or tool movement of the manual machine tool, and blocks and / or covers the charging interface when the blocking device is in a second position, in which the blocking device releases the operation and / or tool movement of the manual machine tool. Thereby, there is the advantage that operation of the manual machine tool in a charging state can be prevented. Potential injuries are minimized. The manual machine tool is made safer. Unintentional disconnection of the charging cable is avoided. The risk of electric shock for the operator of the manual machine tool, which occurs when the charging cable is unintentionally disconnected, is minimized. The electronics and the control of the manual machine tool are protected, since simultaneous operation and charging of the manual machine tool are prevented. In this way, the electronics, which are often designed to be miniaturized, cannot overheat. Damage to the manual machine tool is avoided. The charging interface is protected from mechanical influences and effects, in particular damage, when the manual machine tool is operated. It avoids dirt and corrosion on the surface and inside of the charging interface, and extends the service life of the charging interface.

[0030] It is further proposed that the blocking device is configured as a mechanical blocking device, which has the advantage that the blocking device can be constructed with high robustness, the individual components of the blocking device can be manufactured simply and cost-effectively, and the blocking device can reliably withstand the operating forces and the loads that occur during transport and can withstand them without damage.

[0031] It is further proposed that the blocking device has a slide switch for releasing or blocking and / or covering the charging interface. The slide switch has the advantage that it is easy to operate. The slide switch can be well guided in the housing of the manual machine tool. When the manual machine tool has a two-shell construction, the slide switch can be easily assembled. The slide switch allows for good grip and operating geometry.

[0032] In addition to this, it is proposed that the blocking device has a locking element which is intended for mechanically blocking or releasing a tool movement, in particular in the form of a relative movement of two cutting blades of a manual machine tool relative to one another. The locking element has the advantage that it provides a detachable form-fitting connection. The locking element can be manufactured at low cost. The locking element is robust.

[0033] In addition to this, it is proposed that the charging interface is configured at least as a USB charging interface. This has the advantage that the manual tool can be charged by any charging device, which is intended, for example, for mobile radio equipment. The charging interface is compact, proven and widely used as a standard in the field of IT. Charging via a USB charging interface of the vehicle or at least its cigarette lighter is also possible without any problems, which allows mobile charging. Furthermore, via the USB interface, it is possible to read out device data, carry out software updates or carry out error diagnosis of the manual tool, particularly during the charging process.

[0034] It is further proposed that the blocking device is intended to keep dirt away from the charging interface when in the second position. It is further proposed that the blocking device seals the charging interface in the second position, in particular sealing it watertight. This has the advantage that the charging interface is protected against the ingress of dirt and moisture when the manual machine tool is in operation. In particular, the ingress of dirt and moisture into electronic components of the manual machine tool is thus avoided. A fault-free operation or preservation of functionality of the manual machine tool is ensured.

[0035] It is further proposed that the battery-powered manual machine tool is a garden shears, preferably a garden shears that allows purely manual as well as manual and mechanically supported operation. The cutting elements of the garden shears are an injury hazard for the operator when not blocked. This hazard is further increased by an electromechanically actuatable support. Furthermore, battery-powered garden shears, in particular garden shears that are designed for one-handed operation, should be designed as compact as possible. By means of the blocking device according to the invention, the charging interface can be designed compact and resistant to dirt and moisture. By means of the combination of the charging interface cover and by blocking the operation and / or tool movement, the number of components can be kept low. A compact and weight-reduced construction of the manual machine tool is realized.

[0036] It is further disclosed that the cutting member has a through hole in the direction of the rotation axis through which the connecting member passes. The radial surface of the through hole of the cutting member forms a bearing surface which is rotatably supported, in particular slidingly supported, on a corresponding bearing surface, in particular of the control device, in particular of a sleeve which radially surrounds the connecting member. By "clamping force" it is meant in particular the axial force generated by the connecting member or the prestress of the connecting member. The connecting member is in particular at least one screw and a threaded nut. By "pressing force" it is meant in particular the force with which the axial sliding surfaces of the cutting member are pressed against one another at least in the region of the connecting member. Depending on the pressing force of the cutting member, the operating force applied to the gripping member for rotating or pivoting the cutting member must be large or small.

[0037] The control device has the advantage that the problems of the cutting devices according to the prior art are overcome: the clamping force or prestress can be pre-adjusted; the clamping force of the cutting device is at least approximately constant, regardless of the force of the operator and / or the tightening torque of the connecting member; the cutting result is improved; openings, in particular plastic deformations, of the cutting device are prevented, and the durability of the cutting device is increased.

[0038] It is further proposed that the control device preferably has a spacer element which surrounds the connecting element, in particular in the form of a sleeve. The spacer element may be constructed integrally with the connecting element. The spacer element can also form the connecting element. The spacer element determines the distance, in particular the minimum distance, between the two clamping force transmission elements of the connecting element in the direction of the rotation axis. The clamping force transmission elements are in particular the screw head and the threaded nut of the screw, which transmit the initial stress at least partially to the spacer element and / or at least indirectly to the axial surface of the cutting element. This serves to realize the minimum distance of the two cutting elements in the direction of the rotation axis, at least in the region of the connecting element, preferably in the connection or sliding region of the cutting blade. The spacer element can also space the cutting elements from the connecting element in the radial direction. Thereby, the connection cross-section of the cutting elements and the connecting element or the control device is increased. This in turn allows a higher durability capacity of the cutting device. The suitability of the garden scissors for transmitting higher forces, in particular during force support operations, can be realized.

[0039] It is further proposed that the length of the spacer element in the direction of the rotation axis corresponds at least to the sum of the width dimensions of the two cutting elements along the rotation axis, in particular to the sum of the width dimensions of the two cutting elements in the region of the cutouts of the cutting elements, so that, irrespective of the clamping force of the connecting elements and / or the tightening torque of the connecting screws, at least a minimum clearance can be ensured between the respective cutting elements, thereby ensuring the operability of the cutting device.

[0040] In addition to this, it is proposed that the control device has an elastic element, in particular a spring element, which biases the cutting elements against each other with a defined axial or clamping force along the rotation axis. The elastic element is preferably arranged to at least indirectly support at least one of the cutting elements in the axial direction against the spacer element. The elastic element may be intended as a friction force adjusting element for adjusting the friction force between the respective cutting elements. This has the advantage that the basic operating force for closing the cutting device can be defined as constant. Irrespective of the manufacturing width of the cutting blade within the tolerance range, the pressing force of the cutting elements against each other is always approximately constant. This makes it possible to realize an exchange of the cutting elements without readjusting the clamping force of the screws. In the case of different sizes of the cutting elements, different elastic elements with different spring stiffnesses can be applied depending on the cutting blade used, without the need to change the connecting elements.

[0041] It is proposed that the elastic element is arranged such that it is supported along the rotation axis at least indirectly by the housing of the cutting device, in particular by the grip housing and / or at least indirectly by the spacer element. The support on the housing has the advantage that the coupling element, in particular the coupling-spacer element, can be removed, for example for replacing the cutting element, while the elastic element continues to be accommodated in a fixed manner in the cutting device. Furthermore, the cutting element to be removed or replaceable is fixed at least in such a way that it cannot fall out of the cutting device even without the coupling element applied. The operating comfort of the cutting device, in particular when replacing the cutting element, can thus be simplified. The receiving part, in particular the threaded nut of the coupling element, is likewise accommodated in the housing of the cutting device, in particular in the grip housing, in a fixed and rotationally locked manner, in particular by a hexagonal-shaped connecting element. This can further increase the operating comfort when removing the coupling element, for example for replacing the cutting element.

[0042] It is further proposed that the elastic member is intended as a friction adjusting member for adjusting the friction between the respective cutting members. For example, the opening size can be adjustably defined, for example in order to allow different materials to be cut, different cutting members and / or different cutting purposes to be covered in a simple manner by one cutting device.

[0043] Furthermore, it is proposed that the elastic element is configured as an overload protection element of the cutting device in order to prevent, at least in partial regions, a plastic deformation of the cutting element when the cutting device is activated or to allow, at least in partial regions, an opening of the cutting element when the cutting device is activated. The elastic element adjusts, so to speak, a threshold value beyond which the cutting element is allowed to open elastically. In this way, even if the cutting device is overloaded, for example by attempting to cut a branch that is too thick or a material that is too hard, no damage to the cutting device occurs. The elastic behavior and the desired opening thus protect the cutting device when certain criteria are exceeded and also increase its service life.

[0044] In addition, it is proposed that the control device decouples the connecting member from the cutting member in a rotationally locked manner, in particular in a rotationally locked manner. In this way, it is advantageous that the operative rotation or pivoting of the cutting member does not lead to loosening or rotation of the connecting member. For this purpose, the control device and / or the connecting member can ensure at least one locking element for the rotational fixation of the control device and / or the connecting member about the rotation axis. For example, a locking element can be used that is arranged on a washer, which cooperates as a locking element with a locking recess on the grip housing or on the attachment part. Furthermore, the connecting member and / or the spacer element, or in particular a ring for fixing the elastic element, can be supported on the grip housing as a locking element.

[0045] It is further proposed that the connecting element can be screwed onto a stationarily configured cutting element and / or is in particular configured integrally with at least the spacer element.

[0046] It is further proposed that the cutting device is in particular a pair of garden scissors, particularly preferably a pair of battery-operated garden scissors, which allows manual as well as manual and machine-supported operation.

[0047] It is proposed that the cutting element has an insertion aid for inserting the cutting element into the cutting element receptacle of the garden scissors. The receptacle for coupling with the cutting element receptacle of the garden scissors is preferably made as a hole or recess. By means of the recess a coupling element, in particular in the form of a screw and / or a sleeve, can be inserted for fixing in the cutting element receptacle of the garden scissors. The coupling element serves as a rotational bearing for the cutting element and forms a rotational joint therewith. The insertion aid has the advantage that the exchange of the cutting element can be simplified. It is further proposed that the insertion aid is configured as a beveled surface and / or a circular surface which is configured not to be equal to a purely deburred edge and / or a circular surface. Purely deburred edges are taken to mean, for example, broken edges, in particular edges broken at an angle of 45°, in order to avoid injuries when touching or grabbing the cutting element. Purely deburred edges can also be rounded edges. The sides of the broken edges are essentially of equal length. In contrast, the beveled surface according to the invention has a clear difference in the length of the legs of the chamfered edge, in particular in a ratio of at least 1:3. The beveled surface results in a wedge-shaped configuration of the cutting element in the region of the insertion aid. The beveled surface has the advantage that it serves to expand the cutting element receptacle, in particular a spring-prestressed cutting element receptacle, when inserting or replacing the cutting element.

[0048] It is further proposed that the inclined surface has an angle of less than 30°, in particular less than 15°, particularly preferably less than 5°, relative to the cutting surface of the cutting element. This has the advantage that when the cutting element is inserted, the high spring force of the cutting element receptacle of the garden scissors can be overcome. The thickness of the cutting element is reduced between the receptacle and the end of the cutting element, in particular from 3.5 mm to 2.7 mm.

[0049] It is further proposed that the insertion aid extends at least substantially between the end of the cutting member facing away from the tip of the cutting member and the recess for fixing the cutting member in the cutting member receptacle. "Substantially" is in this context to mean an area of ​​more than 50%, in particular more than 75%, particularly preferably more than 85%. This has the advantage on the one hand that an easy expansion of the cutting member receptacle of the garden scissors can be achieved. Furthermore, this area is not weakened around the recess. Furthermore, a sufficient abutment surface parallel to the cutting plane remains available, which is supported on the other cutting member of the garden scissors at least axially along the axis of rotation, in particular additionally on the lever of the cutting device.

[0050] It is further proposed that the insertion aid is configured for at least indirectly expanding an elastic element arranged on the gardening scissors. The insertion aid has the advantage that the elastic element can be expanded by the operator's hand alone, without further assistance, when inserting the cutting element into the gardening scissors. The elastic element can in turn achieve further advantages, such as overload protection for the gardening scissors and fixing of the cutting element against unintentional detachment from the gardening scissors when changing the cutting element.

[0051] In addition to this, it is proposed that the cutting elements are replacement cutting elements for garden scissors, which has the advantage that the cutting elements can be replaced when the blades become worn or, for example, different cutting blades are used for cutting different materials and can be replaced in a simple manner.

[0052] It is further proposed that the cutting member has at least one form-fitting member for non-rotatably connecting with a lever of the garden scissors, which can be connected with a grip member of the garden scissors, the lever and the cutting member having a coaxial cutout transverse to the cutting surface of the cutting member, via which they can be arranged pivotally in a rotation joint of the garden scissors. In this way, it is advantageous that a drive-supported operation of the garden scissors can be realized. Furthermore, a pinch protection for the fingers can be realized by the arrangement of the lever. A good force transmission as well as the exchangeability of the cutting member are thereby improved.

[0053] Furthermore, a cutting device, particularly preferably battery-operated garden scissors, is proposed which has a cutting element according to the invention. Furthermore, a cutting device is proposed which has a control device which brings about a defined pressing force of the cutting member and the other cutting member against each other, and the insertion aid is intended for expanding the control device when replacing the cutting member. The control device preferably includes an elastic element, which has the advantage that overload protection, a defined opening, a simplified cutting member replacement, etc. can be realized.

[0054] Furthermore, a cutting device is proposed which allows manual as well as manual and machine-supported operation.

[0055] Further advantages will become apparent from the following description of the drawings, in which an embodiment of the invention is shown. The drawings, the detailed description and the claims contain numerous elements in the form of combinations, which a person skilled in the art can consider individually for the purposes of the invention and can also combine them to form other meaningful combinations. [Brief description of the drawings]

[0056] [Figure 1] FIG. 2 shows a cutting device according to the invention having two cutting members and two gripping members in a closed position. [Diagram 2]FIG. 2 shows the cutting device in an open state with the force support operation deactivated and an enlarged view of the force sensor of the cutting device. [Diagram 3] The cutting device shown in FIG. 2 but with the force support operation activated. [Figure 4] FIG. 2 is a schematic cross-sectional view of detail I of the transmission unit, the clutch unit, the return unit and the rope winch of the cutting device. [Diagram 5] Detail II shows a schematic cross-sectional view of the clutch unit and the return unit of the cutting device. [Figure 6] FIG. IV-IV sectional view showing a schematic sectional view of a clutch unit of the cutting device in an engaged state or in a supporting operation. [Figure 7] FIG. IV-IV cross-sectional view showing a schematic cross-sectional view of a clutch unit of the cutting device in a disconnected state. [Figure 8] FIG. 5 is a VV sectional view showing a schematic cross-sectional view of the clutch unit of the cutting device. [Figure 9] FIG. 6 is a schematic cross-sectional view of a return unit of the cutting device taken along the line VI-VI. [Figure 10] 4 is a flow chart illustrating a method of operating a cutting device. [Figure 11] Detail III shows the blocking device in a first state in cross section, as well as a partial view of the blocking device. [Figure 12] Detail III' shows the blocking device in a second state in cross section, as well as a partial view of the blocking device. [Figure 13] 3 is a cross-sectional view of a cutting member storage section of the cutting device taken along line III'-III' in FIG. [Figure 14] 3A and 3B are a plan view and a side view showing a cutting member of the cutting device. [Figure 15] FIG. 13 shows a cutting member coupled with a force transmission member. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0057] 1 shows a cutting device 10 according to the invention. The cutting device 10 is configured as a horticultural cutting device. The cutting device 10 is configured as garden scissors. The cutting device is configured as a battery-operated cutting device 10. In principle, however, other configurations of the cutting device 10 are also conceivable, for example as carpet or tin scissors.

[0058] The cutting device 10 has two cutting members 12, 14 that are movable relative to one another (FIGS. 2, 3). The cutting members 12, 14 are pivotable relative to one another. The first cutting member 12 is here configured as a passive cutting edge with a cutting edge. The second cutting member 14 is configured as an active cutting edge with a blade. The cutting device 10 further has two gripping members 16, 18 that are movable relative to one another. The gripping members 16, 18 are pivotable or rotatable relative to one another. The gripping members 16, 18 are configured to be pivotable relative to one another via at least one rotary joint 42. The cutting members 12, 14 are also configured to be pivotable relative to one another via a rotary joint 42. The rotary joint 42 is arranged between the gripping members 16, 18 and the cutting members 12, 14. The first gripping member 16 and the first cutting member 12 are connected to one another and are arranged on different sides of the rotary joint 42. Furthermore, the second gripping member 18 and the second cutting member 14 are at least indirectly connected to one another and are arranged on different sides of the rotary joint 42. A force transmission member 800, here in the form of a lever 80, connects the second cutting member 14 with the second gripping member 18. The gripping members 16, 18 are intended to be held by an operator. The gripping members 16, 18 are intended to be held by the operator with the same hand. In principle, however, it is also conceivable that the cutting device 10 is intended for two-handed operation. In that case, a force transmission member 800, in particular an operating force F, is applied to the gripping members 16, 18. user For cutting force F cut For example, further lever members and / or shifting members may be provided for at least partially varying the relative positions.

[0059] Furthermore, an opening spring 50 is arranged between the gripping members 16, 18. The opening spring 50 is arranged, in relation to the longitudinal direction of the gripping members 16, 18, closer to the rotary joint 42 than the free ends of the gripping members 16, 18. The opening spring 50 is configured as a compression spring. Ends of the opening spring 50 are supported on the first and second gripping members 16, 18. The opening spring 50 is intended to press the gripping members 16, 18 away from one another and thereby to open the cutting device 10. Furthermore, the opening spring 50 is intended to accommodate and / or guide a drive force transmission member 340, here in the form of a rope 34, which is operatively connected to the drive unit 20, in a hollow space formed thereby, as will be explained in more detail later.

[0060] Furthermore, a protection device 300 is arranged between the opening spring 50 and the rotary joint 42. The protection device 300 extends between both gripping members 16, 18. The protection device 300 is preferably fixedly connected to the second gripping member 18. Furthermore, the protection device 300 is movably accommodated in the first gripping member 16. The protection device can be configured, for example, as a nested device or as a fixed device. The protection device 300 is intended for protecting at least one cable (not shown) of the cutting device 10 from external influences and / or for a secure accommodation between the first and second gripping members 16, 18, which is, for example, guided from the first into the second gripping member 16, 18. The cable is, for example, a cable for the electrical connection of the energy storage unit 54 and the control unit 52 and / or the drive unit 20, or Sensors401 to the control unit 52. However, the protective device 300 also narrows or at least partially fills the free intermediate space 301 between the rotary joint 42 and the opening spring 50, so that, for example, an operator is less likely to accidentally pinch his fingers in this intermediate space or that cutting objects, such as twigs or branches, are less likely to get caught in this intermediate space. In this sense, the protective device 300 is also a shielding device for the intermediate space 301. The intermediate space 301 between the rotary joint 42 and the opening spring 50 is then particularly dangerous for pinching objects 17, such as the operator's fingers or skin, since the forces acting in this area are high due to the lever ratio or lever length of the gripping elements 16, 18 around the rotary joint 42. The protective device 300 therefore ensures a protected and safe guidance of electronic components between the gripping elements 16, 18. Furthermore, the protective device 300 serves to avoid injuries.

[0061] Furthermore, the cutting device 10 comprises a drive unit 20. The drive unit 20 is configured as an electric motor. The electric motor is intended to be supplied with a voltage less than 110 V, in particular with a voltage between 1 V and 36 V, preferably with 3.6 V. The drive unit 20 is arranged on the first gripping member 16. The drive unit 20 is arranged in a grip housing 44 of the gripping member 16. The drive unit 20 is arranged on the end of the first gripping member 16 facing away from the cutting members 12, 14. The grip housing 44 comprises two housing shells, in which the drive unit 20 is fixedly accommodated. The drive unit 20 is intended to support the movement of the second cutting member 14 relative to the first cutting member 12 in at least one operating state. The drive unit 20 is intended to support the closing movement of the cutting device 10 via the gripping members 16, 18 in the case of difficult cutting operations. Thereby, the force F required by the operator to operate the cutting device 10 is reduced. user can be reduced.

[0062] Furthermore, the cutting device 10 comprises a transmission unit 38. The transmission unit 38 is arranged on the first gripping member 16. The transmission unit 38 is arranged in a grip housing 44 of the gripping member 16. The transmission unit 38 is arranged on the side of the drive unit 20 facing towards the cutting members 12, 14. The transmission unit 38 is in this example driven directly by the drive unit 20. The force transmission from the drive unit 20 to the transmission unit 38 is: DriveThe drive unit 20 is driven via a driven shaft 21 to a pinion 82 of a gear unit 38. The gear unit 38 is configured as a gear transmission unit. The gear unit 38 has at least one gear stage. The gear unit 38 preferably has a plurality of gear stages. The gear unit 38 in particular has a maximum of six gear stages, preferably four gear stages. At least one gear stage is configured as a planetary gear stage 381, 382, ​​383, 384. The gear unit 38 is configured as a planetary gear unit (FIG. 4). The gear unit 38 preferably has a transmission ratio of 30:1 to 300:1, in particular 100:1 to 150:1, in particular 130:1. However, in principle other transmission ratios are also conceivable. The gear unit 38 is supported on the gripping element 16 via a housing 74 of the gear unit 38. The housing 74 of the transmission unit 38 is formed by at least one ring gear 385 of at least one planetary gear stage 381, 382, ​​383, 384. The housing 74 of the transmission unit 38 may also be formed by individual ring gears of the planetary gear stages 381, 382, ​​383, 384 arranged in series. The force transmission within the at least one planetary gear stage 381, 382, ​​383, 384 takes place from a driven sun gear 386 via a planetary gear 387 of the respective planetary gear stage supported on the stationary ring gear 381 to a planetary carrier 388 which rotates together with the planetary gear 387. The planetary carrier 388 in turn drives the sun gear of the next gear stage 382, ​​383, 384. The planetary carrier 389 of the last gear stage 384 forms the driven part of the transmission unit 38 .

[0063] Furthermore, the disconnecting device 10 has a clutch unit 22 (FIGS. 4 and 5). The clutch unit 22 is configured as an automatic clutch unit 22. "Automatic clutch unit" is intended in the present context to mean a clutch unit 22 which is operated without an external, in particular an electrical, switching signal from the control unit 52. This is preferably understood to mean a clutch unit 22 which is operated without an explicit switching signal for switching between the respective clutch states. This is preferably understood to mean a clutch unit 22 which is operated on the basis of mechanical influencing factors. This is preferably understood to mean a clutch unit 22 which is operated depending on at least one parameter of the driving side and / or the driven side. The clutch unit 22 can therefore be configured in particular as speed-operated, torque-operated, direction-operated and / or force-flow-operated. The automatic clutch unit 22 is configured as a freewheeling clutch. "Freewheeling clutch" is intended in the present context to mean an automatic clutch which is configured in particular as direction-operated and / or force-flow-operated. The freewheeling clutch is preferably at least directional. To this end, the freewheeling clutch is preferably intended to be opened and / or closed, in particular depending on the direction of rotation of the drive side and / or the driven side of the clutch unit 22 and / or depending on the direction of force application on the freewheeling clutch. In terms of the direction of force application, it is possible to distinguish, for example, whether the force acts on the freewheeling clutch from the drive side or from the driven side. The freewheeling clutch is preferably intended to be opened or closed, in particular depending on the direction of rotation of the drive side and / or the driven side and / or depending on the direction of force application on the freewheeling clutch, during at least one operating state of the drive unit 20. The clutch unit 22 is arranged in the first gripping member 16. The clutch unit 22 is arranged in a gripping housing 44 of the first gripping member 16.The clutch unit 22 is intended to decouple the drive unit 20 during at least one operating state in which the drive unit 20 is deactivated, in particular when the final position of the cutting device 10 is reached and / or when the operating force F exerted on the gripping members 16, 18 is reduced. user The drive unit 20 is automatically deactivated when the torque decreases, and the clutch unit 22 is automatically decoupled when the rotary motion of the drive unit 20 fades out. "Decoupling of the drive unit" is intended in particular to mean decoupling of the drive unit 20 from the closing mechanism of the cutting device 10. The clutch unit 22 is also intended for decoupling the gear unit 38 in at least one operating state in which the drive unit 20 is deactivated. The clutch unit 22 is intended for decoupling the drive unit 20 and / or the gear unit 38 in order to embody at least a fully manual operation. "Fully manual operation" is intended in the present context to mean in particular an operating state in which the cutting device 10 operates without the support of the drive unit 20. This means that the active force F of the operator is not required. userThis is preferably understood as an operating state in which the cutting device 10 operates only by the drive unit 20. This is particularly preferably understood as an operating state in which the drive unit 20 is decoupled and therefore is not available for supporting the movement of the second cutting member 14 relative to the first cutting member 12. This allows, in particular, a manual operation of the cutting device with a preferably lighter movement. This allows, in particular, for example, to be achieved in the case of no energy supply and / or light cutting tasks, that the cutting device 10 can also be used preferably without the drive unit 20. The clutch unit 22 is preferably intended for accelerating the opening or extending movement of the two cutting members 12, 14 or the two gripping members 16, 18. When the cutting device 10 is opened or extended, the clutch unit 22 allows, as will be explained further below, an accelerated winding and / or unwinding of the drive force transmission member 340, here in the form of a rope 34, from the rope winch 32 or the rope drum 320 of the rope winch 32. This allows an increased operating or processing speed of the cutting device and an increased operating comfort. The number of possible cuts per unit time can be increased. After a preceding closing process of the cutting device 10, in which at least the drive unit 20 supports the movement of the second cutting member 14 relative to the first cutting member 12, the clutch unit 22 is intended to decouple the drive unit 20 and to re-engage it when a closing movement with force support by the motor is once again performed.

[0064] The clutch unit 22 comprises an inner rotating member 46 and an outer rotating member 48. The inner rotating member 46 is rotatable relative to the outer rotating member 48 in at least one state. The outer rotating member 48 is preferably connected to a driven part of the transmission unit 38. A part of the clutch unit 22 preferably forms part of the transmission unit 38, in particular of the last gear stage 384. The outer rotating member 48 is preferably configured integrally with a part of the transmission unit 38, in particular with a planetary carrier 389 of the last gear stage 384 and / or with a driven part of the transmission unit 38. The inner rotating member 46 and the outer rotating member 48 are fixed to one another, in particular by a coaxial connecting member 47. The connecting member 47 is configured as a connecting pin. The connecting member 47 fixes the inner and outer rotating members 46, 48 to one another at least axially and / or radially. The connecting member 47 is preferably connected fixedly, in particular frictionally, to the outer rotating member 48 and to the inner rotating member 46 with at least rotational play. The connecting shaft 47 is received in sliding bearing in the inner rotating member 46. The connecting shaft 47 further has a shoulder 471 for axially fixing the inner rotating member 46 relative to the outer rotating member 48. The shoulder 471 bears against, in particular against, a rim-shaped surface of the inner rotating member 46.

[0065] Furthermore, the clutch unit 22 has a number of clamping bodies 24 (FIGS. 6 and 7). "Clamping body" is understood in this context to mean a component of the clutch unit 22 which is intended for clamping between two mutually rotatably supported rotating members of the clutch unit 22, in particular in at least one operating state, in particular when the clutch unit 22 is in the closed state. The clamping bodies 24 are arranged between an inner rotating member 46 and an outer rotating member 48. The clamping bodies 24 are arranged around the inner rotating member 46 in a circumferentially synchronous manner. The clamping bodies 24 are configured as cylinders and / or rolls, in particular as cylindrical rolls. In principle, however, other configurations of the clamping bodies 24 are also conceivable, such as, for example, balls or barrels. The outer rotating member 48 has on its inner surface a number of circumferentially successive ramps 49. The number of ramps 49 here corresponds to the number of clamping bodies 24. The clamping bodies 24 are arranged movably between the respective ramps 49, so that the clamping bodies 24 are entrained when the outer rotating member 48 rotates. When the outer rotating member 48 is driven in the circumferential direction against the ramp gradient, the clamping bodies 24 roll between the outer rotating member 48 and the inner rotating member 46 into the narrower ending region and are pressed towards the inner rotating member 46. This takes place in the drive direction 41 when the outer rotating member 48 is driven. "Drive direction" is understood to mean in particular the direction of rotation of the drive unit 20, which rotates during normal operation, in particular to support the cutting movement. A rotary entrainment of the inner rotating member 46 takes place. The clutch unit 22 is closed in this state, as shown in FIG. 6. When the inner rotating member 46 is driven, on the other hand, the clamping bodies 24 remain in the valley of the ramp 49 or roll back into it and are spaced apart from the outer rotating member 48, regardless of the direction of rotation. The clamping bodies 24 are arranged freely between the respective rotating members 46, 48. No rotary entrainment takes place. The clutch unit 22 is open in this state, which is shown in Figure 7. The outer rotating member 46 is driven by the drive unit 20 via the transmission unit 38.The transmission unit 38 and the drive unit 20 form the drive side of the clutch unit 22. When the inner rotating member 46 is driven against the drive direction 41, the clamping body 24 moves into the valley of the ramp 49 and is also freely positioned between the respective rotating members 46, 48. The automatic clutch unit 22 is spatially arranged between the cutting members 12, 14 and the drive unit 20. The automatic clutch unit 22 is spatially arranged between the rope winch 32 and the transmission unit 38. At least the rope winch 32 or the driven member of the rope winch 32 forms the driven part of the clutch unit 22.

[0066] The automatic switching clutch unit 22 has a cage 26 for receiving the clamping bodies 24 (FIGS. 6, 7). The cage 26 receives the clamping bodies 24 in receiving areas separated from one another. The cage 26 serves to position and guide the clamping bodies 24 in the circumferential direction. The cage 26 is intended to distribute the clamping bodies 24 evenly at a distance from one another in the circumferential direction. In particular, when there are several clamping bodies 24, it can be ensured that the clamping bodies 24 perform an identical movement in the circumferential direction. This has the advantage that a controlled clamping of the clamping bodies 24 is possible. The cage 26 is of partially annular design. The cage 26 is of partially cylindrical design. A cylindrical body of the cage 26 is fitted with a number of axially projecting arc-shaped webs which extend in the circumferential direction between the respective clamping bodies 24. The cage 26 is supported on a rotating member 46 inside the clutch unit 22.

[0067] Furthermore, the clutch unit 22 has a brake element 28 intended for slowing down the cage 26 (FIG. 8). The brake element 28 is configured as a spring element. The brake element 28 is configured as a type of spiral spring. The brake element 28 is configured as a ring spring. The brake element 28 is fixedly arranged with one end in a recess 29 of the cage 26. The brake element 28 extends at least partially in a circumferential direction in a spiral around the cage 26. The brake element 28 is wound around the cage 26. The outer surface of the brake element 28 is at least partially supported by a stop element 27 which radially surrounds the brake element 28 or the cage 26. The stop element 27 is configured as a fixed ring or a stop ring. The stop element 27 is arranged stationary in the clutch unit 22. The stop element 27 is connected fixedly, in particular at least rotationally fixedly, preferably in a frictional manner, with the housing 23 of the clutch unit 22. For better force transmission, the inner surface of the housing 23 is structured, in particular grooved, in the region of the area intended for arranging the stop member 27. The brake member 28 allows the rotation of the cage 26 relative to the stationary grip housing 44 in one direction of rotation, in particular the driving direction of rotation, and prevents the rotation of the cage 26 in the opposite direction of rotation. The brake member 28 allows the rotation of the cage 26 relative to the housing 23 of the clutch unit 22 or relative to the stop member 27 in one direction, and prevents the rotation of the cage 26 in the opposite direction of rotation. At least one part of the brake member 28, in particular a large part of its outer surface, presses radially outward against the stop member 27 by a spring force. The brake member 28 is configured to allow freewheeling of the cage 26. The brake member 28 is designed to slow down or prevent rotation of the cage 26 in the counter-driving direction 410 or to immobilize the cage, but to allow rotation, particularly with low friction, of the cage 26 relative to the outer support surface or stop member 27 in the driving direction 41. An overrunning clutch of this type draws the free ends together as the cage 26 rotates in the driving direction 41 and in so doing slides over the inner surface of the stop member 27.When rotated in the counter-driving direction 410, on the other hand, such an overrunning clutch expands and at least brakes or blocks the cage 26 relative to the stop member 27. The brake member 28 is intended to prevent unintentional rotation of the cage 26. The brake member 28 is intended to prevent rotation of the cage 26 until a force is applied thereto, in particular until a force is applied thereto by the drive unit 20. The brake member 28 may be configured as a ratchet member or any other member that creates freewheeling, for example.

[0068] Furthermore, the inner rotating element 46 has at least one, in particular two, form-locking elements 460, 460'. The form-locking elements can be configured as flanges or can have other shapes. The cage 26 also has a form-locking element 260. The rotating body 370 has a form-locking element 370. The stop element 27 has at least one form-locking element 270. The components of the clutch unit 22 and the return unit 31 are fixedly connected to one another at least via the form-locking elements 260, 270, 370, 460, 460' and the associated friction-locking connection between the rotating body 37 and the inner rotating element 46. This means that the components are axially locked to one another. Alternatively, the axial locking can be achieved in other ways. This has the advantage that additional bearings, for example plain or rolling bearings, can be omitted. Furthermore, the outer rotating member 48 is also axially fixed to the inner rotating member 46 via the connecting member 47 , and is thus axially positioned relative to the clutch unit 22 via the stop member 27 .

[0069] The cutting device 10 further comprises a reset unit 31 (FIG. 9). The reset unit 31 is arranged on the first gripping member 16. The reset unit 31 is arranged on the surface of, and preferably inside, the grip housing 44 of the gripping member 16. The reset unit 31 is arranged on the clutch unit 22. The reset unit 31 is preferably intended for ensuring tension on the rope. The reset unit 31 is preferably intended for biasing the rope winch 32 with a force, in particular with a circumferential force. The reset unit 31 is particularly preferably intended for generating a pulling force on the rope 34 via the rope winch 32. In particular via the reset unit 31, the rope 34 is preferably held in a permanently tensioned state. The reset unit 31 is arranged in such a way that the opening force F of the opening spring 50 (FIG. 3) is generated. OS Lower return force F VSIt is preferable to generate a tension on the rope 34 by the return unit 31, especially even during a completely manual operation. In this way, it is advantageous that the rope 34 is prevented from being unintentionally entangled. Furthermore, it is possible to ensure that the rope 34 is wound up without a driving force. The return unit 31 has a spring member 36 and a rotating body 37. One end of the spring member 36 is fixedly connected to the housing 23 of the clutch unit 22. The other end of the spring member 36 is fixedly connected to the rotating body 37. The spring member 36 is arranged radially between the housing 23 of the clutch unit 22 and the rotating body 37. The spring member 36 radially surrounds the rotating body 37. The spring member 36 is wound around the rotating body 37 several times. The return unit 31 is particularly connected to the rope winch 32 at least indirectly via the rotating body 37. The rotating body 37 is fixed via the spring element 36 so as to be limitedly rotatable relative to the grip housing 44 or the housing 23 of the clutch unit 22. The rotating body 37 is connected via the shaft 35 to the rope winch 32. The rotating body 37 is preferably connected via the shaft 35 to the inner rotating member 46 of the clutch unit 22 in a non-rotatable manner. The rotating body 37 may be connected to the inner rotating member 46 via at least one radial and / or axial form-fitting member. The rotating body 37 has a coaxial recess. The recess is configured in a polygonal shape. The inner contour of the recess is configured to correspond to the outer contour of the shaft 35. The spring element 36 is intended for biasing the shaft 35 with a force in the drive direction 41. The spring element 36 is intended for biasing the inner rotating member 46 with a force in the drive direction 41. The spring element 36 is intended for transmitting a tensile force to the rope 34 via the rope winch 32. Via the spring element 36, the rope 34 can be held permanently stressed, in particular under tensile stress. In order to simplify the assembly of the cutting device 10, or at least of the clutch unit 22 and the return unit 31, the spring element 36 can be prestressed and can be used to hold the clutch unit 22 in place by means of an assembly aid 360. 222, the return unit 31 can be fixed relative to the housing 23 of the clutch unit 22. In that way, at least the return unit 31, in particular in relation to the clutch unit 22, can be mounted modularly and prestressed. As a further alternative, the clutch unit 22 can be opened via the spring member 36 as soon as the drive motor is deactivated. In that way, the inner rotating member 46 can be rotated in the drive direction 41 via the spring member 36, and thus the cage 26 can be slowed down via the brake member 28 as soon as the drive motor 20 is deactivated. In that way, alternate reversals of the direction of rotation of the drive motor 20 for opening the clutch unit 22 can be advantageously avoided.

[0070] Furthermore, the cutting device 10 comprises a rope winch 32 which can be driven by the drive unit 20. The rope winch 32 is arranged in the first gripping member 16. The rope winch 32 is preferably configured so that it can be driven by the drive unit 20 via the clutch unit 22. The rope winch 32 is preferably configured so that it can be decoupled from the drive unit 20 via the clutch unit 22 in at least one operating state. By means of the rope winch 32, a preferred force action of the drive unit 20 can be realized. In particular, it is possible to support the movement of the second cutting member 14 relative to the first cutting member 12 in a simple design manner. The operator is thus advantageously supported by the drive unit 20 during the closing movement. Furthermore, a preferred high torque can be provided by the force action of the drive unit on the gripping members 16, 18. This in turn allows the power of the drive unit 20 to be kept low. The rope winch 32 is arranged in a grip housing 44 of the first gripping member 16. The rope winch 32 is arranged on the side of the clutch unit 22 facing the cutting members 12, 14. The rope winch 32 is connected to a shaft 35, which is preferably constructed integrally with the rope winch 32. The shaft 35 is supported via bearings, in particular via plain bearings 77, 77'. The bearing 77 facing towards the cutting members 12, 14 is supported in the grip housing 44 of the gripping member 16. The bearing 77' facing away from the cutting members 12, 14 is supported in the housing 23 of the clutch unit 22. The shaft 35 is connected to the clutch unit 22. The shaft 35 is connected non-rotatably with the inner rotating member 46. The shaft 35 is further connected non-rotatably with the rotating body 37. The shaft 35 has a polygonal cross-sectional shape. The shaft can also have other cross-sectional shapes for connection to the clutch unit 22, for example a square cross-sectional shape, a tongue-and-groove cross-sectional shape or other shaft-hub-connection cross-sectional shapes.Due to the direct connection of the rope winch 32 to the inner rotating member 46 of the clutch unit 22 and to the rotating body 37 of the return unit, and also due to the connection of both members to each other, the device is constructed very compact. The automatic clutch unit 22 may be partially integrated into the rope winch 32. The clutch unit 22 may be partially surrounded by the rope winch 32. Furthermore, the rope winch 32 forms the driven side of the clutch unit 22. The rope winch 32 has a rope drum 320. The rope drum 320 is constructed substantially cylindrical. The axial length of the rope drum 320 is preferably intended for winding the rope 34 only in a single layer. The axial length of the rope drum 320 is preferably 5 to 15 mm, in particular 6 mm. For positioning the rope 34 on the rope drum 320, the rope drum forms a shoulder at least on the side facing the revolute joint 42. The diameter of the rope drum 320 is preferably less than 10 mm, in particular 7 mm. The rope winch 32 has a receiving section 33 for fixing the rope 34. The receiving section 33 is configured as an opening or as a through hole in the transverse direction of the rope winch 32 or the shaft 35. The receiving section 33 has an at least substantially rectangular cross section. It may also be configured as oval, circular, square, etc. The receiving section 33 may have a clamping seat for a preferably secure and compact receiving of the rope end of the rope 34. In the region of the receiving section 33 the shaft 35 preferably has a larger diameter than in the region of the rope drum 320. This is preferably 8 mm.

[0071] The cutting device 10 further includes a rope 34. The rope 34 is fixedly secured to the second gripping member 18 and is secured to the first gripping member 19. 16The rope 34 is preferably attached to the gripping member 16, 18 so as to be retractable via the rope winch 32. The rope 34 is preferably arranged with respect to the gripping members 16, 18 closer to the rotary joint 42 than the end of the gripping member 16, 18 spaced from the rotary joint 42, in particular closer than 10 cm, preferably between 6 and 8 cm from the rotary joint 42. The rope is stretched between the gripping members 16, 18. The rope 34 can be supported at the first gripping member 16 and / or the second gripping member 18 via a guide element 780, in particular via a guide sleeve 78. The guide sleeve 78 is preferably designed as a hollow cylinder and has a flange 783 on one side. The flange 783 can preferably be intended for fastening to the first or second gripping member 16, 18. Furthermore, the guide element 780 can position and / or fasten the opening spring 50 at the first and / or second gripping member 16, 18. The cylinder of the guide sleeve 78 faces the opposite gripping member 16, 18, in particular transversely to the longitudinal direction of the gripping members 16, 18. The outer surface 784 of the cylinder supports the inside or inner surface of the opening spring 50. At least one opening of the guide sleeve 78, in particular both openings, is provided with a bend 782. The bend 782 preferably has a radius of 0.6 mm. This contributes to a low-friction support of the rope 34. Furthermore, the inner diameter of the cylinder tapers in the direction of the flange 783. This has the advantage that the rope 34 only comes into contact with the guide member 780 at the opening of the guide member 780 which faces the respective other gripping member 16, 18, which likewise contributes to a low-friction support of the rope 34 in the guide member 780 and a contact-free support of the rope 34 inside the opening spring 50 and / or allows the rope 34 to roll, so to speak, in a guided manner, over the entire drum width. The rope 34 is stretched between the two gripping members 16, 18. The ends of the opening spring 50 are received in guide sleeves 78 at the first and second gripping members 16, 18. The guide sleeves 78 are made of a harder material than the gripping members 16, 18. The rope 34 is guided inside the opening spring 50. The opening spring 50 is configured as a barb spring, in particular as a double barb spring.In the relaxed state, the opening spring 50 preferably has a length of less than 100 mm, in particular a length of 70 mm. In the compressed state, the opening spring 50 has a length of less than 25 mm, in particular a length of 17 mm. In the compressed state, the opening spring 50 has an opening force of, for example, less than 100 N, in particular an opening force of 32 N. The spring diameter is, for example, 4 to 8 mm, in particular 6.6 mm, at the ends and approximately 10 to 15 mm, in particular 11 mm, in the central part of the opening spring 50. The opening spring 50 is preferably intended to allow an opening angle σ of the gripping members 16, 18 about the rotary joint 42 of up to 70°, in particular up to 50°, particularly preferably up to 35°.

[0072] The rope 34 may be supported with low friction inside the opening spring 50. The rope 34 may be guided in a damage-resistant manner inside the opening spring 50, so that damage to the rope due to, for example, sharp edges of the opening spring 50 is avoided. The opening spring 50 has an additional guide element 781 which guides the rope 34 inside the opening spring 50 in a protective and friction-free manner. The rope 34 is preferably made of polyethylene, in particular ultra-high molecular weight polyethylene (UHMW-PE). This is a Dyneema® rope 34. It preferably has a diameter of 2 mm and can withstand, for example, repeated pulling forces of 1000 N and winding on a rope drum 320. Such a rope 34 is particularly wear-resistant. It can be placed directly on the opening spring 50 or guided by it without friction-reducing or damage-reducing elements. Such a rope has good winding properties, high strength and good resistance to aging or use. Alternatively, the rope 34 is made of polyacrylic, Kevlar, (Registered Trademark), wire or the like. The rope 34 is at least indirectly connected to the second gripping member 18 in the region between the rotary joint 42b and the end of the second gripping member 18 facing away from the cutting members 12, 14. A support force for closing the cutting members 12, 14 can be exerted thereon via a drive force transmission member 340. The rope 34 is connected to the second gripping member 18 via a force transmission member in the form of a lever 80. The rope 34 can be variably wound on the rope winch 32 by the first gripping member 16. The rope 34 is guided by an opening spring 50, which has the advantage that the operator is prevented from being bothered by the rope 34 when operating the cutting device 10. Furthermore, the rope 34 is protected from damage, dirt, weather exposure, and the like. 34 Damage to the cutting elements 12, 14 and / or similar damage can be avoided, in particular by the use of a spring bar. By driving the rope winch 32, the free length of the rope 34 can be changed and / or the distance or opening angle σ of the gripping elements 16, 18 and / or the opening angle of the cutting elements 12, 14 can be changed (FIGS. 2, 3).

[0073] A drive system for the force-supported operation of the manual machine tool is preferably formed by the following components: drive motor 20, transmission unit 38, clutch unit 22, return unit 31 and rope winch 32. These components are arranged in series, in particular in the above-mentioned order. These components are preferably arranged in the first gripping element 16. If necessary, the drive motor 20 drives the transmission unit 38, via which the clutch unit 22 drives the rope winch 32. The return unit 31 can be intended to keep the rope 34 permanently under tension and, in conjunction with the components of the clutch unit 22, to decouple the clutch unit 22 when switching from a force-supported operation to a non-force-supported operation. This drive system is preferably supported or fixed in the gripping housing 44 only via the housing of the motor unit 20, the housing 74 of the transmission unit 38, the housing 23 of the clutch unit 22 and the rotary bearing 77 of the rope winch 32 facing the cutting elements 12, 14. The clutch unit 22 and the return unit 31 are designed very compactly and allow simple assembly. The first gripping member 16 can at least thereby be designed compact or short. The length of the first or second gripping member 16, 18 between the end of the first or second gripping member 16, 18 facing away from the rotary joint 42 and the opening spring 50 is preferably less than 150 mm, in particular 120 to 130 mm. The length of the first or second gripping member 16, 18 from the end facing away from the rotary joint 42 to the rotary joint 42 is preferably less than 200 mm, in particular 170 to 190 mm. The overall length of the cutting device 10 is preferably less than 300 mm, in particular 200 to 300 mm, preferably 250 to 260 mm. The envelope circle diameter around the first gripping member 16 in the gripping area 62 is preferably less than 40 mm, in particular 30 to 35 mm. The diameter of the envelope circle around the second gripping member 18 in the gripping area is preferably less than 30 mm, in particular approximately 25 mm. The cutting device 10 preferably achieves tactile and / or ergonomic characteristics comparable to those of a purely manual cutting device that is not equipped with a motor.Furthermore, it is possible to arrange a drive system on at least one of the gripping members 16, 18 and to arrange an energy storage unit 54.

[0074] Furthermore, at least one of the gripping members 16,18 has an area 620 at least partially configured elastically and / or inclined and / or chamfered at the transition of the grip inner surface 600 to the side surface 610 of at least one gripping member 16,18 (FIG. 1). This area can be configured to be recessed in the direction of the separation plane of the housing shell of at least one gripping member 16,18 compared to the side surface 610. By grip inner surface 600 is meant in particular the grip inner surfaces facing each other. The mutual opening angle β of the inclined areas 620 of both gripping members 16,18 is preferably between 30° and 150°, or the angle between the imaginary separation plane between the gripping member 16,18 and the inclined area 620 of the first or second gripping member 16,18 is half of it. In particular, the opening angle β between the revolute joint 42 and the end of the gripping member 16, 18 facing away from the revolute joint 42 varies at least between 60° and 120°. The length s of the side of the inclined surface is preferably between 5 and 10 mm and can also vary with respect to its length. In the region of the end of the gripping member 16, 18 facing away from the revolute joint 42, the grip inner surface is provided with a spacer element 630, in particular a soft stop element. The outer surface 64 of the gripping members 16, 18 is likewise preferably chamfered, in particular according to the above-mentioned envelope diameter of the respective gripping member 16, 18. This outer surface 64 preferably has a soft grip surface in order to improve the operating comfort and / or has a structuring in order to avoid slipping during operation. The gripping members 16, 18 are intended to be at least almost in contact with each other. The elastic or chamfered configuration of the grip inner surface has the advantage that undesired pinching, in particular pinching of the skin of the operator's hands, can be avoided, which increases the operating safety of the cutting device 10. The envelope circle diameter around the closed cutting device 10 is preferably less than 100 mm, in particular the envelope circle diameter around the gripping area 62 of the closed gripping members 16, 18 is less than 70 mm, preferably 50 to 60 mm.

[0075] The cutting device 10 further comprises a control unit 52. The control unit 52 is arranged in the first gripping member 16. The control unit 52 is arranged in the grip housing 44 of the gripping member 16. The control unit 52 is intended for controlling the drive unit 20. In principle, not only a purely open-loop control of the drive unit 20 but also a closed-loop control of the drive unit 20 can be performed. The control unit 52 supplies the drive unit 20 with energy for this purpose. In principle, however, the drive unit 20 can also be directly connected to the energy storage unit 54 via a switch 72. The control unit 52 is arranged between the drive unit 20 and the rotary joint 42. The control unit 52 is arranged between the rope winch 32 and the rotary joint 42. The control unit 52 is preferably connected to a display element 200. The display element 200 indicates the activation or operation of the drive unit 20 or can also allow other forms of status display. The display element 200 is a light. The light is an LED. The display member 200 can display to the operator, for example via the color of light, indications regarding the charge state of the energy storage unit 54, the support force during the support action, etc. and / or can provide an indication as to whether the support action is active or not. The control unit 52 is connected to the energy storage unit 54. Via the energy storage unit 54, the drive unit 20 can be supplied with energy from the control unit 52. The energy storage unit 54 comprises at least one accumulator. The accumulator 58 consists of a lithium-ion battery. In principle, however, other configurations of the at least one accumulator 58 are also conceivable. The accumulator 58 is arranged in the second grip member 18. The accumulator 58 is arranged in a grip housing 60 of the second grip member 18. The accumulator 58 is connected to the control unit 52 (FIGS. 2, 3).

[0076] Furthermore, the battery-powered manual tool or cutting device 10 has a blocking device 202. The blocking device 202 is arranged on the first gripping member 16. The blocking device 202 is arranged on the grip housing 44 of the gripping member 16. FIG. 11 shows a part of the cutting device 10 or the blocking device 202 in a first state. The cutting members 12, 14 of the cutting device 10 are in a closed state. The blocking device 202 is in a first position. The blocking device 202 blocks the mutual operation and / or tool movements of the cutting device 10, in particular of the cutting members 12, 14 or the gripping members 16, 18. The blocking device 202 is configured as a mechanical blocking device 202. The blocking device 202 has a slide switch 204. The slide switch 204 is intended for blocking and / or closing or releasing the charging interface 211. The slide switch 204 is intended to be slid by an operator, in particular by a finger of the operator. The blocking device 202 has a locking member 206. The locking member 206 is intended for mechanically blocking or releasing the relative movement of the two cutting members 12, 14 with respect to one another. The slide switch 204 is mechanically coupled to the locking member 206. The slide switch 204 is coupled to the locking member 206 via a rotary joint 208. The blocking device 202 is arranged in the area of ​​the control unit 52. The blocking device 202 is arranged in the area of ​​the thickened part of the gripping member 16. The blocking device 202 or the slide switch 204 of the blocking device can preferably be operated at least by the thumb of the operator when the cutting device 10 is operated with one hand. The slide switch 204 is guided or supported in a longitudinally slidable manner via a groove 207 in the gripping member 16. The slide switch 204 can be slid relative to the gripping member 16. The slide switch 204 is configured for closing or at least partially releasing an opening 209 in the grip housing 44. The slide switch 204 is intended to cover, or close, or release the charging interface 211 .The slide switch 204 is intended to release the charging interface 211 when in a first position and to close the charging interface 211 when in a second position. The locking member 206 is connected at one free end to the rotary joint 208. The locking member 206 has a locking member 210 at the other free end. The locking member 206 is configured for engaging with the first and second notches 212, 214 of the first and second cutting members 12, 14 by means of the locking member 210 when the cutting members 12, 14 are in a closed position. When in the closed position, the first and second notches 212, 214 of the cutting members 12, 14 are aligned in the direction of the rotation axis 149 of the rotary joint 42. The locking member 206 or the locking member 210 is intended for engaging with the aligned notches 212, 214 in this position.

[0077] FIG. 12 shows the blocking device 202 in a second state. The blocking device 202 is in a second position. The cutting members 12, 14 of the cutting device 10 are in an open position. In the second state, the cutting members 12, 14 are movable relative to one another. The cutting device 10 is in a state intended for at least manual operation. In the second position of the blocking device 202, the blocking device 202 releases the mutual operation and / or tool movement of the cutting device 10, in particular of the cutting members 12, 14 or the gripping members 16, 18. The charging interface 211 is blocked or closed by a slide switch 204 of the blocking device 202. The locking member 206 does not penetrate into the recesses 212, 214 of the cutting members 12, 14. At least one of the recesses 212, 214 may be arranged on at least one structure that is non-rotatably connected to one of the cutting members 12, 14. For example, the recess 214 may be arranged on the lever 80. Both the slide switch 204 and the grip member 18 may be arranged with sealing elements (not shown) which enable sealing of the charging interface 211. The sealing element is arranged in particular between the grip member 18 and the slide switch 204. At least one sealing element preferably ensures sealing of the charging interface 211 when the blocking device is in the second position. In this way, the control unit 52 and also other electronic components of the cutting device 10, which are at least in electronic contact with the charging interface 211, can advantageously be protected against dust and moisture, in particular when the cutting device is in operation.

[0078] The cutting device 10 further comprises a force transmission member in the form of a lever 80. The lever 80 connects the second cutting member 14 to the second gripping member 18. The lever 80 has at least one form-fitting member for connecting with the cutting member 14. The second gripping member 18 is connected to the lever 80 via at least one further rotary joint 65. The gripping member 18 and the lever 80 are configured to be at least limitedly pivotable relative to one another. The gripping member 18 and the lever 80 pivot about the further rotary joint 65. The gripping member 18 and the lever 80 are configured to be pivotable relative to one another about a pivot axis 66. This pivoting movement is at least limited via the inner contour of the hollow gripping member 18. This pivoting movement can further be limited by a form-fitting member configured on the gripping member 18. The gripping member 18 is further supported against the lever 80 by a spring 68. The gripping member 18 is supported against a lever 80 by a spring 68 at the free end of the lever 80 .

[0079] The cutting device 10 further comprises a sensor 401. The sensor 401 is configured for sensing operating conditions in which a force support action is necessary. The sensor 401 or other sensors (not shown here) are preferably capable of sensing operating conditions in which the support action should be discontinued and / or stopped for the purposes of operational safety of the cutting device, in particular when an object 17 is placed between the gripping members 16, 18. The sensor 401 is preferably a force sensor 40 intended for sensing a force acting on the second gripping member 18, in particular relative to the first gripping member 16 and / or relative to the lever 80. The force sensor 40 is preferably intended for detecting an exact force, but also for detecting only the exceeding of a limit force. The force sensor 40 is arranged in the force transmitting member configured as the second gripping member 18 and / or the lever 80. The force sensor 40 is preferably arranged integrated in the second gripping member 18. The force sensor 40 is arranged between the lever 80 and the gripping member 18. The force sensor 40 comprises at least one spring 68 and a switch 72, in particular a microswitch. The spring 68 preferably supports a lever 80 against the outer surface 64 of the second gripping member 18. When the cutting device 10 is closed, for example to cut the workpiece 11, a cutting force F cut When the force F acts on the cutting members 12, 14, the second gripping member 18 is subjected to the spring force F of the spring 68 relative to the force transmitting member or lever 80. gs8, the second gripping member 18 can move against the lever 80, in particular can pivot. For this purpose, the lever 80 and the gripping member 18 are arranged so that they can pivot about a common, separate rotation joint 65. The spring 68, in at least one operating state, so to speak, connects the gripping member 18 with the lever 80. The lever 80 has a recess and the gripping member 18 has an extension, which, in particular when the two grip shells of the second gripping member 18 are joined, constitutes an axis of rotation 66 about which the lever 80 can at least definitively rotate or pivot. The gripping member 18 can preferably be pivoted relative to the lever 80 in a definite manner about the axis of rotation 66. This pivoting movement is ensured by at least corresponding form-fitting elements on the second gripping member 18 and on the lever 80. Furthermore, the spring 68, in particular the compressed spring 68, can also serve as a pivot limiter. The second gripping member 18 is preferably supported by the spring 68 at the free end of the lever 80 against the lever 80. A receiving element 69 is preferably fitted onto the lever 80. The receiving element 69 preferably serves as a receiving portion, in particular as a guiding receiving portion for the spring 68, and preferably as a receiving portion, in particular as a plug receiving portion, for the switch 72. The actuating force F exerted on the gripping element 18 for actuating the cutting elements 12, 14 is user Spring force F gs , the gripping member 18 pivots relative to the lever 80. In this example, the outer surface 64 of the gripping member 18 moves closer to the lever 80.

[0080] To detect the pivoting movement or the pivoting force, or at least to detect the exceeding of a threshold value, the movement of the spring 68, and / or the like, the force sensor 40 has a switch 72. The switch 72 is configured as a microswitch, in particular as a break or change-over contact. The switch 72 has a trigger member configured as a pressing member. The pressing member is made as a pivoting member 71, in particular as a pivoting lever, and is intended for operating the switch 72. The switch 72 preferably senses the outward pivoting or the enlargement of the switch 72 from the inner surface 63 of the second gripping member 18. The switch 72 is thus activated when the pivoting member 71 is pivoted outward. Or, in other words, the switch 72 is deactivated when the pivoting member 71 abuts against the switch 72 and is activated when the pivoting member 71 is pivoted outward relative to the switch 72. The switch 72 is thus closed at a defined outward pivoting of the pivoting member 71. The pivoting member 71 is supported directly on the housing of the gripping member 18 or on an additional pressing member 81 or the like. The pressing member 81 may further be configured in such a way that it is intended for selecting the sensitivity of the force sensor 40. The pressing member 81 is preferably part of the force sensor 40, which is preferably arranged on the further switch 73. This further switch serves as a support movement adjustment member. The further switch 73 is preferably arranged so as to be laterally slidable with respect to the pivoting member 71. The further switch 73 can slide in the direction of the rotary joint 42. The further switch 73 is arranged on the side of the second gripping member 18 facing towards the first gripping member 16, i.e. the further switch 73 is arranged on the inner surface 63 of the second gripping member 18. An incorrect operation of the further switch 73, in particular during the cutting process, can thereby be avoided. The further switch 73 is configured as a slide switch. The further switch 73 has a wedge-shaped configured pressing member 81. The pressing member 81 is intended for contacting the pivoting member 71 in all operating states. Switch 72 or pivot member 71By sliding the further switch 73 relative to the first or second cutting member 12, 14, the sensitivity of the force sensor 40 or the threshold for activating the switch 72 can be changed. In particular, the trigonometric distance relationship of the pressing member 81 relative to the pivot member 71 through the lever length of the lever 80 inside the second gripping member 18 allows the sensitivity of the force sensor 40 to be changed when the further switch 73 is slid. When the further switch 73 is slid toward the first or second cutting member 12, 14, the switch 72 operates with a higher operating force F. user On the other hand, when another switch 73 slides in the opposite direction, the switch 72 is activated by a lower operating force F user The force sensor 40 is activated by the force sensor 40. In this way, the sensitivity of the force sensor 40 can be adjusted in a cost-effective manner by mechanical means. Different activation levels or thresholds can be set for the support movement of the cutting device 10, for example as a function of the variable hand force of the operator. The further switch 73 preferably has three locking positions in connection with the switch housing, in particular in connection with the gripping element 18. This has the advantage that three support movement levels can be defined. This design makes it possible to dispense with an additional on / off switch for activating a purely electronic alternative force or stroke sensor, which would require constant current to sense the exceedance of a defined threshold. The advantage is therefore that the switch 72, and thus the supporting drive, is only activated if the mechanical force of the spring 68 in the form of a threshold is exceeded. Or in other words, the threshold is exceeded and the switch 72 is thereby turned on depending on the pivoting movement of the lever 80 inside the gripping member 18 about the spring-loaded revolute joint 67. This makes it possible to provide a force sensor 40 that is particularly low-cost and simple in design.

[0081] Furthermore, a driving force transmission member 340 in the form of a rope 34 operatively connected to the drive unit 20 acts on the lever 80. That is, when the drive unit 20 is activated, the lever transmits a driving force F anThus, the lever 80 is biased by the driving force F an from direct force action on the gripping members 18. For example, when an object 17 is placed between the respective gripping members 16, 18 during force-support operation of the cutting device 10, the gripping members 16, 18 cannot be moved further apart. an moves the lever 80 inside the gripping member 18 towards its initial position, the switch 72 opens and the force support action ends. Thus, the force sensor 40 or the lever 80, the spring 68 and the switch 72 decouple the force support action for compressing the gripping members 16, 18. That is, as long as an object 17 is placed between the respective gripping members 16, 18, the switch 72 necessarily opens and the drive unit 20 is deactivated, which prevents, for example, undesired crushing of the limbs or skin of the operator or damage to the gripping members 16, 18 when, for example, a thick branch is placed between them. In such a case, the operating force F user only contributes to the crushing of the object 17. The arrangement of the lever 80 on the gripping member 18 allows in particular to recognize the placement of the object 17 in the entire range between the further revolute joint 65 of the lever and the end of the gripping member 16, 18 facing away from the revolute joint 42 and to stop the support action. An additional sensor (not shown here) for recognizing the object 17 between the respective gripping members 16, 18 can be omitted. In this way, there is the advantage that only a force sensor 40 is needed which activates when a threshold is exceeded and activates the support action, forcing the support action to be stopped the moment the object 17 is placed between the gripping members 16, 18. The susceptibility to malfunctions and the risk of injury as well as the control costs are thereby much lower due to multiple alternative sensors for the recognition of possibly different operating cases - a force transmission action is required, an object 17 is between the gripping members 16, 18 -.

[0082] In principle, however, alternative configurations of the force sensor 40 are also conceivable, for example by means of a force sensor in the gripping surface of the first or second gripping member 16, 18 or by means of a stroke sensor for detecting the relative movement between the second gripping member 18 and the lever 80 or by detecting the actuating force F acting on the gripping members 16, 18. user 18 and / or by other types of sensors for recognizing the counterforce acting against the closing movement of the gripping members 16, 18, caused by the object 17 between the gripping members 16, 18. Alternative arrangements of the spring 68, the switch 72 or the further switch 73 are also conceivable for realizing similar functionality. Thereby, the force currently applied to the gripping members 16, 18 can also be detected, in particular the need for a force support operation, and in special cases - the object 17 between the gripping members 16, 18, the interruption of the force support operation. Furthermore, the actuation force of the one or more force sensors 40 can be freely defined by the software. Furthermore, in principle, it is also conceivable that the force sensor 40 can distinguish between various degrees of depression of the switch 72 or of pivoting of the pivoting member 71, so that the exact actuation force F currently applied can be detected. user This is to enable estimation of the

[0083] Furthermore, the force sensor 40 is connected to a control unit 52. The control unit 52 is intended for controlling the drive unit 20 depending on the signal of the force sensor 40. The control unit 52 is intended for activating the drive unit 20 when a defined measured value of the force sensor 40 is exceeded. The control device 52 is intended for activating the drive unit 20 when a switch 72 of the force sensor 40 is closed. The control unit 52 is further intended for stopping the drive unit 20 when the switch 72 of the force sensor 40 is opened. The energy storage unit 54 and the control device 52 are connected via the switch 72 and without the control device 52. Drive A direct connection to the drive unit 20 is also conceivable.

[0084] When the cutting device 10 is activated, the cutting force Fcut a manual mode of the cutting device 10 in which the cutting force F is entirely applied by the operator; cut A distinction can further be made between the support modes applied by the drive unit 20 .

[0085] The second cutting member 14 is an active cutting member 14 having a cutting edge. It is configured as an exchangeable cutting member 14. The second cutting member 14 is connected to the lever 80 of the cutting device 10 via at least one form-fitting member 216 (FIGS. 11, 12), which is further connected to the second gripping member 18. The form-fitting member 216 is intended at least for transmitting forces in the radial direction about the rotation axis 420, but also for transmitting axial forces F ax in the direction of the axis of rotation 420 to the lever 80 or to the cutting member 14. A locking lug 220 is formed on the lever 80, which engages in the form-fitting element 216 of the cutting member 14 in the coupled state. Furthermore, at least one axial guide surface 332 is provided for inserting the cutting member 14 into the cutting member receiving portion 400.

[0086] FIG. 13 shows the section III-III' of the cutting device 10 or the cutting member receptacle 400. The first and second cutting members 12, 14 are indirectly connected via a shaft arranged along a rotation axis 420. This shaft forms a rotary joint 42 for the cutting members 12, 14. The shaft is formed at least by a connecting member 421. Furthermore, a spacer member 423 is arranged on the connecting member 421. The spacer member 423 serves to space the connecting member 421 at least axially, and in this example also radially, relative to the cutting members 12, 14. The spacer member 423 can be fixed to the connecting member 421 via a fastening member 430. The connecting member 421 can also be configured integrally with the spacer member 423. The connecting member 421 is configured as a screw. Advantageously, the screw can be unscrewed and removed together with the spacer member 423 from the cutting device 10 or the grip housing 44. The spacer member 423 is arranged so as to reduce the clamping force F of the connecting member 421.klemm Regardless of the pressure F between the cutting members 12, 14, anpr In the direction of the axis of rotation 420, the cutting members 12, 14 have through holes 120, 140, through which the connecting member 421 is inserted. The radial surfaces of the through holes 120, 140 form bearing surfaces which rest on corresponding bearing surfaces of a spacer member 423 or a sleeve which radially surrounds the connecting member 421.

[0087] The spacer element 423 at least indirectly determines the minimum distance in the direction of the axis of rotation 420 between two clamping force transmission elements, here in the form of the screw head 443 of the screw and in the form of the receiving part 425, which is configured as a threaded nut, in particular as a threaded nut received in a non-rotating manner, with which the screw is connected. Such a force transmission element is adapted to reduce the initial stress F of the connecting element 421. klemm The clamping force F is at least indirectly transmitted to the spacer member 423. klemm is only a defined part of the force of the connecting member 423 to the axial surface 121, 141 of the cutting member 12, 14. In this way, at least one axial position of the two cutting members 12, 14 along the axis of rotation or the frictional forces between the cutting members 12, 14 which arise when pivoted relative to one another can be defined independently of the tightening torque of the connecting member 423 or independently of other influencing quantities.

[0088] times The longitudinal length l of the spacer member 423 in the direction of the rotation axis 420 allows the relative movement of the cutting members 12, 14, in particular the pivoting movement of the cutting members 12, 14 relative to each other. This length is equal to the width dimension b of both cutting members 12, 14 along the rotation axis 420. 1 ,b 2 Thus, the clamping force F of the coupling member 421 is preferably at least equal to the sum of klemm Regardless of the distance or the maximum clamping force F ancan be defined between the cutting members 12, 14 at least in the non-operating state of the cutting device 10, whereby operability of the cutting device 10 is ensured.

[0089] Furthermore, the control device applies a mutually defined axial or clamping force F klemm The cutting member 420 may have a resilient member 424 which biases the cutting member 420 along the axis of rotation 420 at a pressure of 0.5 to 1.000 MPa. The resilient member 424 is configured as a spring, in particular as a compression spring, and particularly preferably as a wave washer. The resilient member 424 is arranged indirectly between the axial surface 122 of the first cutting member 12 and a radial shoulder 426 of the spacer member 423. The resilient member is arranged between the axial surface 122 of the first cutting member 12 and a stop ring 427. The stop ring 427 is supported on the shoulder 426 of the spacer member 423. The stop ring 427 is further supported by the grip housing 44. The force with which the resilient member 424 is compressed is an axial force F ax and the clamping force F between the two cutting members 12, 14 an or as a contact pressure or normal force. The elastic element 424 thus adjusts the frictional force between the cutting members 12, 14. This makes it possible to at least partially determine the basic operating force for closing the cutting device 10. This makes it possible to adjust the basic spacing between the cutting members 12, 14. Regardless of the manufacturing width of the cutting members 12, 14 - within the tolerances - the mutual pressing force F of the cutting members 12, 14 is an remains approximately constant due to the spring constant of the elastic element 424. Further tolerances of the cutting element receptacle 400 can also be compensated for. In this way, it is advantageous that either a sheet of paper or a tree branch can be cut with the cutting device 10, since the cutting distance can be adapted to the requirements given by the workpiece 11. The replacement of the second cutting element 14 is possible without readjusting the clamping force or tightening torque of the screws or without changing the intermediate element. The clamping force F between the cutting elements 12, 14 remains approximately constant due to the spring constant of the elastic element 424. Further tolerances of the cutting element receptacle 400 can also be compensated for. In this way, it is advantageous that either a sheet of paper or a tree branch can be cut with the cutting device 10, since the cutting distance can be adapted to the requirements given by the workpiece 11. The replacement of the second cutting element 14 is possible without readjusting the clamping force or tightening torque of the screws or without changing the intermediate element. Regardless of the connecting element 423 or the clamping force or tightening torque of the screws, the clamping force F anis kept approximately constant. The wave washer preferably has an outer diameter in the range of 20 mm and an inner diameter in the range of 15 mm. The free axial length of the wave washer is preferably less than or equal to 5 mm, in particular 3.25 mm. The clamping force of the wave washer is preferably 15 to 25 N at a compressed length of 1.1 to 1.5 mm.

[0090] Furthermore, when the coupling member 423 is loosened, and in particular when the coupling member and the spacer members 421, 423 are entirely removed, the retaining ring 427 is axially supported on the grip housing 44. In this way, at least one reduced axial force F of the spring ax or crimping force F an is maintained relative to at least the first cutting member 12, whereby the second cutting member 14 to be replaced can at least be positioned without the coupling member 421 and / or is protected against unintentional removal from the cutting device 10.

[0091] At least the axial force F of the elastic member 424 ax In order to transmit the cutting force, the first, in particular stationary, cutting member 12 is also configured so as to be laterally slidable, i.e. in the direction of the rotation axis 420. This cutting member is fixed in the direction of rotation about the rotation axis by a form-fitting member, which is supported on a corresponding form-fitting member of the first gripping member 16. In particular, the corresponding form-fitting member is a connecting member for connecting a grip shell of the first gripping member 16.

[0092] The resilient member 424 also serves as an overload protection member for the cutting device 10. The resilient member prevents plastic deformation of the cutting members 12, 14 when the cutting device 10 is actuated. The resilient member 424 determines the threshold F above which the cutting device 10 is permitted to open. ax is adjusted. The spring force F axAbove this threshold, the elastic member flexes at least until the second cutting member 14 abuts axially against the stop member 442, thus allowing at least a slight axial sliding and / or tilting within the first gripping member 16 or along the axis of rotation 420. The elastic behavior and the desired force when the defined threshold is exceeded can be adjusted through the spring force of the elastic member 424 and through the structure of the control device 422. In this example, the control device 422 includes at least the coupling member 421, the spacer member 423, the stop ring 427 and the elastic member 424.

[0093] The receiving part 425 of the connecting element 421 in the form of a threaded nut is fixedly received in the grip housing 44 of the cutting device 10 and is received in a rotationally locked manner via a hexagonal-shaped fastening element 428. A lid 429 connected to the grip housing 44 fixes the threaded nut in the axial direction, so that the threaded nut is positioned in the cutting device 10 even when the connecting element 421 is removed. Furthermore, a sliding element 440 in the form of a sliding ring or sliding disk is arranged between the grip housing 44 and the lever 80. The sliding disk is connected non-rotatably to the grip housing 44 by at least one fastening element 441. Furthermore, the sliding element 440 is also arranged between the spacer element 423 and the receiving part 425 configured as a threaded nut. The receiving part is thus fixed in the axial direction between the sliding element 440 and the lid 429, in particular when the connecting element 421 is removed. Furthermore, the sliding element 440 decouples any potential rotational movements of the spacer element 423 from the receiving part 425.

[0094] Ko The control device 422 may be at least indirectly locked in one or more places with respect to the grip housing 44 and / or the stationary first cutting member 12, so that a relative movement of the lever 80 or the first cutting member 12 does not lead to an unintentional loosening of the coupling member 421. For this purpose, for example, the sliding member, the receiving part 425 and / or the spacer member 423 are locked in the grip housing 44.

[0095] The first cutting member 12 is preferably 4mm thick. The second cutting member 14 is preferably 3.5mm thick at its thickest point. The lever 80 is preferably 3.5mm thick.

[0096] FIG. 14 shows a cutting member configured as a second cutting member 14 in a plan view as well as in a side view. The second cutting member 14 has a blade 143. The second cutting member 14 is an exchangeable cutting member for the cutting device 10. The second cutting member 14 has a tip 146 and an end 148 opposite the tip 146. In the region of the end 148, the second cutting member 14 has a notch 214. The notch 214 serves as a receiving part for a locking member 210 of the blocking device 202 of the cutting device 10 for blocking the mutual movement of the cutting members 12, 14. Furthermore, the second cutting member 14 has a form-fitting member 216 which is configured as a corresponding locking notch for a locking lug 220 of the lever 80 of the cutting device 10. The form-fitting member 216 serves to transmit the radial forces of the gripping member 18, in particular via the lever 80, about the rotary joint 42 of the cutting device 10. Furthermore, the end 148 of the second cutting member 14 is at least partially chamfered. Between the end 148 of the second cutting member 14 and the receiving part 142 configured as a recess 140 intended for rotatably receiving the second cutting member 14 in the cutting device 10, the second cutting member 14 has an insertion aid 144 in the form of an inclined surface. The insertion aid 144 is inclined with respect to the cutting surface plane of the second cutting member 14 formed by the cutting surface 145, but can also be configured circularly, in particular crowned. The insertion aid 144 extends essentially radially from the center of the receiving part 142 to the end 148 of the second cutting member 14. The thickness of the second cutting member 14 decreases in the region of the insertion aid 144 in the direction of the end 148. This thickness decreases from approximately 3.5 mm to 2.7 mm. The length of the side of the inclined surface is preferably 9 mm. The angle α of the inclined surface is preferably less than or equal to 30°, in particular less than or equal to 15°, very particularly preferably approximately 5°. A rest surface 149 extends between the insertion aid 144 and the blade 143. The rest surface 149 is intended for a form-fitting connection with the lever 80. The rest surface is designed flat and faces normal to the direction of the recess 142 or normal to the direction of the rotation axis 420 of the garden shears 10. The opposing cutting surface 145 is designed for sliding along the first cutting member 12.It rotates around the rotation axis 420 or the rotation joint 42 so as to slide along the first cutting member 12 .

[0097] The method of operating the cutting device 10 will now be described (FIG. 10).

[0098] Operation of the disconnecting device is preferably only possible when the blocking device is in the second position. A charging process of the disconnecting device is preferably not intended in this second position. The cutting device 10 is always in the operating mode. As soon as the switch 72 is closed, the control unit 52 activates the drive motor 20. In principle, however, it is also conceivable that the cutting device 10 in particular additionally has an operating switch by means of which the cutting device 10 can be activated and deactivated. Alternatively, it would also be conceivable that the cutting device 10 can be activated automatically, for example by a defined continuous closing and / or opening of the cutting device 10. It is conceivable that the deactivation can be time-dependent, for example.

[0099] When an operator is to carry out a cutting process during operation, for example to cut a branch, he must position the cutting material 11 to be cut between the cutting members 12, 14 of the cutting device 10. The cutting members 12, 14 can then be closed, in particular as with conventional garden scissors, by compressing the gripping members 16, 18 relative to one another. The gripping members 16, 18 are manually compressed by the operator in step 1180. As long as the spring force of the force sensor 40 is not exceeded, the switch 72 does not output a signal. In step 1200, the control unit 52 monitors the signal of the force sensor 40 or the switch 72. The control unit 52 thus monitors the force required for the cutting process. The control unit 52 checks whether the switch 72 of the force sensor 40 is open or closed.

[0100] The operator force F required for the cutting process useris lower than the force required to close the switch 72, as defined by the force sensor 40, the cutting device 10 is used in the manual mode. If the switch 72 is open, step 1200 is repeated in the next branch 1220. In the manual mode, the gripping members 16, 18 are manually pivoted relative to one another by the operator. In the manual mode, the rope 34 is wound onto the rope winch 32 by the return unit 31 or the spring member 36. Since the force then acts on the clutch unit 22 from the driven side, the clutch unit 22 is in the open state. The rope winch 32 can therefore rotate without resistance from the transmission unit 38 or the drive unit 20. In this state, the rope 34 remains tensioned by the spring member 36. When the operator releases the force on the gripping members 16, 18, for example because the cutting process is finished, the gripping members 16, 18 are pushed apart by the opening spring 50 and the cutting device 10 opens. At this time, the rope 34 is unwound from the rope winch 32 against the spring force of the spring member 36 .

[0101] When the energy storage unit 54 of the cutting device 10 is empty, the cutting device 10 can be used in manual mode, in which case the drive unit 20 remains deactivated, even when the force defined by the force sensor 40 is exceeded. No activation of the drive unit 20 takes place, whereby the clutch unit 22 is also kept open.

[0102] The operator force F required for the cutting process user is greater than the force required to close the switch 72, as defined by the force sensor 40, the cutting device 10 is used in the support mode. The switchover from the manual mode to the support mode is in principle carried out during the cutting process. In the manual mode, the gripping members 16, 18 are manually pivoted relative to one another by the operator. When a hard cutting object 11 is to be cut, the gripping members 16, 18 have to be pressed relative to one another with a large force by the operator. The spring force F gsIf a force is applied that is so great that the switch 72 closes when the operating force F is overcome, this is sensed by the control unit 52. The control unit 52 then activates the drive unit 20. If it is determined in branch 1220 that the switch 72 is closed, the drive unit 20 is activated in step 1240 via the control unit 52. The drive unit 20 accordingly connects to the closing mechanism of the cutting device 10 when a defined operating force F is exceeded. The drive unit 20 then drives the inner rotating member 46 of the clutch unit 22 via the transmission unit 38. The drive unit 20 is driven in the drive direction 41. The clutch unit 22 is closed and drives the rope winch 32. The rope 34 is wound on the rope winch 32. The gripping members 16, 18 then rotate in a direction in accordance with the operating force F. user In addition to the driving force F as In this operating state, the drive unit 20 biases the cutting members 12, 14 with additional force, partly by manual movement. as At this time, it acts on the rope 34 via the rope winch 32.

[0103] At this time, the driving force F as The operating force F acts on the lever 80 via the rope 34. user As long as the manual movement continues to produce a driving force F that is greater than the force defined by the force sensor 40 required to close the switch 72, an The operating force F user If the actuation force F falls and the switch 72 opens, the drive unit 20 is stopped in step 1260. The stopping of the drive unit 20 in step 1260 can also be achieved when the two gripping members 16, 18 are closed or come into contact with one another via the spacer member 630 or an object 17 is placed between the gripping members 16, 18, so that the force defined by the force sensor 40 required to close the switch 72 is also exceeded. user In this state, the driving force F does not act on the force sensor 40 any more. asacts on the lever 80 via the rope 34, moving it to its initial position in which the switch 72 is open. The drive unit 20 is then temporarily driven in the counter-driving direction 410 in a step 1280 in order to open the clutch unit 22. The brake member 28 brakes the cage 26, and the clamping body 24 no longer clamps the outer rotating member with the inner rotating members 46, 48. Such a redirection of the drive unit 20 or of the drive of the drive unit 20 in the counter-driving direction 410 need only be temporary, for example less than 100 milliseconds, in particular less than 40 milliseconds. The drive unit 20 is then deactivated in a step 1300. After the deactivation of the drive unit 20, the method can be started from the beginning.

[0104] In principle, the clutch unit 22 can also automatically decouple the drive unit 20 when no rotational movement takes place. In this case, the cutting device 10 can also in principle be at least partially opened by the opening spring 50 when the rotational movement of the drive unit 20 stops, the rope winch 32 being partially rotated via the rope 34 against the drive direction 41 of the drive unit 20. In this case, the inner rotating member 46 of the clutch unit 22 rotates relative to the outer rotating member 48, thus opening the clutch unit 22. In principle, however, other possibilities for opening the clutch unit 22 are also conceivable. [Explanation of symbols]

[0105] 10 Cutting device 12,14 Cutting member 16,18 Grip material 17 Object 20 Drive unit 22 Clutch unit 24 Clamp body 26 Cage 28,50,36,68,424 Spring material 32 Rope winch 34 Rope 38 Transmission unit 40 Force Sensor 42 Rotating joint 50 Open spring 72 Switch 142 Storage unit 143 Cutting blade 144 Insertion aid 149 Rotational Axis 202 Blocking device 211 Charging interface 300 Protective devices 301 Intermediate Space 340 Driving force transmission member 400 Cutting material storage section 401 Sensors 421 Connecting members 600 Grip inner surface 730 Support movement adjustment member 800 Driving force transmission member

Claims

1. at least one first and second cutting members (12, 14) movable relative to one another; first and second gripping members (16, 18) movable relative to one another; at least one drive unit (20) intended for at least supporting the movement of said second cutting member (14) relative to said first cutting member (12) in at least one operating state; A cutting device (10) having a protection device (300) is disposed between the first gripping member (16) and the second gripping member (18) between a rotation joint (42) connecting the first gripping member (16) and the second gripping member (18) and an opening spring (50); The protection device (300) accommodates the cable of the cutting device (10). A cutting device characterized in that

2. The protection device (300) forms a shielding device for shielding an intermediate space (301) bounded by the first gripping member (16), the second gripping member (18), the rotary joint (42) and the opening spring (50).

2. The cutting device according to claim 1, characterized in that it comprises:

3. At least one first and second cutting members (12, 14) movable relative to one another; and first and second gripping members (16, 18) movable relative to one another. at least one drive unit (20) intended for at least supporting the movement of said second cutting member (14) relative to said first cutting member (12) in at least one operating state; A cutting device (10) having a protection device (300) is disposed between the first gripping member (16) and the second gripping member (18) between a rotation joint (42) connecting the first gripping member (16) and the second gripping member (18) and an opening spring (50); The protection device (300) forms a shielding device for shielding an intermediate space (301) bounded by the first gripping member (16), the second gripping member (18), the rotary joint (42), and the opening spring (50) to prevent unintentional placement of at least one of an operator's limbs or an external object in the intermediate space (301). A cutting device characterized in that

4. It is possible to perform manual operation and machine-supported operation The cutting device according to any one of claims 1 to 3, characterized in that

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