EP4486539A1 - Setzgerät - Google Patents
SetzgerätInfo
- Publication number
- EP4486539A1 EP4486539A1 EP23708755.6A EP23708755A EP4486539A1 EP 4486539 A1 EP4486539 A1 EP 4486539A1 EP 23708755 A EP23708755 A EP 23708755A EP 4486539 A1 EP4486539 A1 EP 4486539A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- traction
- clutch
- roller
- setting tool
- traction mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C1/00—Hand-held nailing tools; Nail feeding devices
- B25C1/06—Hand-held nailing tools; Nail feeding devices operated by electric power
Definitions
- the invention relates to a setting tool for driving a fastener such as a nail into an anchor base made of wood or concrete, for example, with the features of the preamble of claim 1.
- the setting device is preferably a pushing device, but it is also possible to use a firing device or another setting device.
- a setting tool for driving a nail into an anchor base is known from patent application US 2021/0 146 517 A1.
- the well-known setting tool has a piston-cylinder unit as an energy storage device, the piston of which can be moved into a cylinder with an electric motor via a cable winch, thereby compressing air in the cylinder.
- a cable of the cable winch is released from a cable pulley of the cable winch, whereupon the compressed air in the cylinder displaces the piston out of the cylinder, the piston moving the nail axially in a driving direction.
- the object of the invention is to separate an electric motor of a traction winch for tensioning an energy store of a setting device for driving a fastening element into an anchorage when driving the fastening element into the anchorage from the energy storage device.
- the setting tool has a driver for driving a fastener into an anchor base made of wood or concrete, for example.
- the driver is movable along a setting axis of the setting tool.
- the setting tool also has a tensionable energy store for moving the driver along the setting axis from a rear end position in a driving direction into a front end position, and a tensioning device for tensioning the energy store.
- the tensioning device has a traction mechanism winch with a traction mechanism roller and a traction mechanism that can be wound onto the traction mechanism roller and with which the energy store can be tensioned.
- the traction winch or the tensioning device has an electric motor.
- the fastening element is a nail, for example.
- a “driver” is an element of the setting tool according to the invention, which is moved by the tensioned energy store along the setting axis in the driving direction to drive the fastener into the anchor base and moves the fastener along the setting axis in the driving direction.
- the driver can also be or have an assembly consisting of several components. It is therefore the element which, in order to drive the fastening element into the anchorage, transmits energy or movement of the energy storage device to the fastening element and acts on or moves it in the driving-in direction.
- the energy store stores energy for driving the fastening element into the anchorage in basically any form and transmits the energy for driving in the fastening element at least partially to the driver, with the energy store itself or a converter converting the stored energy into a movement, i.e. into kinetic energy, provided the energy store does not store the energy as kinetic energy.
- Storing energy in the energy store is referred to here as “charging” and discharging or transferring energy from the energy store to the driver as “relaxing” the energy store.
- the energy store can be completely relaxed when the fastener is driven into the anchor base. In particular, the energy storage device is partially relieved when the fastening element is driven into the anchor base and remains pretensioned at the end of the driving-in process.
- the energy store is or has, for example, a spring element, in particular a helical compression spring or a piston-cylinder unit as a gas pressure spring.
- a spring element or a helical compression spring is tensioned mechanically.
- a piston is pushed into a cylinder of the piston-cylinder unit in such a way that a gas contained in the cylinder is compressed.
- Other energy stores are possible.
- the traction winch is in particular a cable winch with a cable as the traction device.
- traction winches with, for example, a belt, a belt, a Band, a chain or another traction device that can be wound onto a traction device roller.
- the pulley is, for example, a cable wheel or traction wheel onto which the traction device can be helically wound, or a cable drum or traction device drum onto which the traction device can be wound helically, or a chain wheel.
- Winding up should also be understood to mean that the traction device rotates around the traction device roller by less than one complete turn, i.e. less than 360°, for example 180°, or more than one complete turn, through which a tensile force is generated when the traction device roller is rotated is exerted on the traction means.
- the tensioning device has a detachable coupling which, in a connecting coupling state, connects the electric motor to the traction roller in such a way that the traction roller can be driven in rotation with the electric motor, and which, in a released clutch state, separates the traction roller from the electric motor in such a way that the traction roller is rotatable independently of the electric motor.
- the tensioning device can have a reduction gear, via which the electric motor drives the traction roller.
- the clutch can be arranged between the electric motor and the reduction gear or between the reduction gear and the traction roller or inside the reduction gear.
- One advantage of the invention is that when the fastening element is being driven into the anchorage, the electric motor is separated from the traction mechanism roller and is therefore not moved along with it by the energy storage device, which means that no energy from the energy storage device for driving the electric motor is lost when the fastening element is being driven into the anchorage.
- the clutch is preferably automatically releasing and automatically separates the traction mechanism roller from the electric motor when the driver reaches the rear end position when the energy store is tensioned.
- the clutch is preferably automatically load-shifting and separates the traction mechanism roller from the electric motor when the torque is relieved.
- a torque that the clutch transmits to tension the energy store keeps the clutch in the connecting clutch state when the energy store is tensioned. If the clutch is relieved in such a way that it transmits no torque or at least only a reduced torque automatically in the released state of the clutch.
- power shifting is meant that the clutch automatically transitions from the connecting clutch state to the released clutch state when the torque is relieved.
- Power shifting here means that the clutch releases automatically when the torque is relieved.
- the clutch When the driver reaches the front end position, the clutch preferably automatically enters the connecting clutch state in such a way that the energy store can be tensioned again with the electric motor and the traction winch to drive a fastening element into the anchorage again.
- one embodiment provides a helical gear that converts a rotation of the traction roller into a displacement that brings the clutch into the connecting clutch state in the front end position of the driver and/or into the released clutch state in the rear end position of the driver.
- a development of the invention provides a spring element for releasing the clutch, i.e. for bringing the clutch into the released clutch state, which is tensioned by the helical gear when the traction mechanism is wound onto the traction mechanism roller to tension the energy store in the sense of releasing the clutch.
- a development of the invention provides a spring element for engaging the clutch, ie for bringing the clutch into the connecting clutch state, which is tensioned by the helical gear when the traction mechanism is unwound from the traction mechanism roller in order to engage the clutch.
- a slide lock prevents clutch engagement until the driver reaches its forward end position. In the front end position of the driver, the slide lock is released, whereupon the spring element, which is now tensioned in the sense of engaging the clutch, engages the clutch, i.e. in spends the connecting clutch state.
- the traction mechanism roller can now be driven in rotation by the electric motor, the traction mechanism can be wound onto the traction mechanism roller and the energy store can thereby be tensioned.
- Different spring elements or the same spring element can be used to disengage the clutch in the rear end position of the driver and to engage the clutch in the front end position of the driver.
- the traction means is unwound from the traction means roller by a return spring in one embodiment of the invention in order to then tension the energy store by winding the traction means onto the traction means roller.
- the return spring is tensioned when the traction mechanism is wound onto the traction mechanism roller.
- One embodiment of the invention has a claw clutch as an automatically releasing, automatically shifting and/or power-shifting clutch.
- One embodiment of the invention has a freewheel as a reverse rotation lock for the traction winch, which prevents the traction winch from unwinding when the energy store is tensioned.
- the freewheel used as a reverse rotation lock for the traction winch makes it possible to switch off the electric motor for rotating the traction winch when the energy storage device is tensioned.
- the freewheel used as a reverse rotation lock prevents the traction winch from unwinding and keeps the energy store tensioned via the traction winch until a setting process of the setting device is triggered. It is provided that a user of the setting device triggers the setting process manually.
- the freewheel used as a reverse rotation lock of the setting tool blocks the traction mechanism roller when the energy storage device is tensioned against rotation in a reverse direction opposite to the tensioning direction, i.e. against unwinding of the traction mechanism from the traction mechanism roller when the energy storage mechanism is tensioned. It is possible that the freewheel used as a reverse rotation lock also blocks the traction mechanism roller while the energy store is being tensioned or always against reverse rotation.
- One embodiment of the invention provides a ratchet freewheel with a ratchet wheel and one or more pawls as a freewheel, ie a form-fitting one freewheel, before.
- a non-positive or frictional freewheel is also possible, such as a (clamping) roller freewheel or a sprag freewheel.
- FIG. 1 shows a simplified and schematic axial section of a setting tool according to the invention
- FIG. 2 shows a perspective view of a clamping device, a driver and an energy store of the setting tool from FIG. 1 according to the invention
- FIG. 3 shows part of the clamping device from FIG. 2 in a perspective representation
- Figure 4 shows another representation of part of the clamping device from Figure 2.
- the setting tool 1 according to the invention shown in FIG. 1 is provided for driving a fastening element 2, such as the nail shown here, into an anchor base (not shown) made of wood or concrete, for example. It has a setting shaft 3 and a housing 4 which encloses the setting shaft 3 and which can be considered as being cylindrical with a frusto-conical taper towards a front end.
- the housing 4 has a handle 5 for holding the Setting tool 1 with one hand.
- the handle 5 is arranged on the housing 4 almost radially to the setting axis 3 somewhat behind a longitudinal center of the housing 4 .
- the setting tool 1 On a front side of the handle 5, the setting tool 1 has a trigger 6 for triggering a driving-in process, that is, for starting the driving-in of the fastening element 2 into the anchorage.
- the trigger 6 is an operating element of the setting tool 1 which is arranged movably on the front side of the handle 5 and with which the driving-in process can be triggered with a finger, in particular an index finger of a hand gripping the handle 5 and thereby holding the setting tool 1 .
- the front side of the handle 5 points in a driving-in direction 16 or in the direction in which the fastening element 2 emerges from the setting tool 1 when being driven into the anchorage.
- the setting tool 1 Near a front end of the housing 4, the setting tool 1 has a magazine 8 for the fastening elements 2, from which the nails forming the fastening elements 2 are individually placed coaxially onto the setting axis 3 of the setting tool by means of a magazine spring 9
- a piston-cylinder unit 10 is arranged coaxially to the setting axis 3 in the housing 4, the piston 11 of which has a coaxial plunger 12 which forms the fastening element 2 forward, i.e. in the direction of the one brought from the magazine 8 onto the setting axis 3 nail protrudes.
- the piston 11 is a tubular hollow piston which is closed at its front end and has the plunger 12 and which is axially displaceable in a cylinder 13 of the piston-cylinder unit 10 .
- the cylinder 13 of the piston-cylinder unit 10 is arranged coaxially and fixed to the housing in the housing 4 of the setting tool 1 . Together with the ram 12, the piston 11 forms a driver 14 of the setting tool 1 for driving the fastening element 2 into the anchor base (not shown).
- the piston-cylinder unit 10 forms a tensionable energy store 15 of the setting tool 1 according to the invention for driving or moving the driver 14 in the driving-in direction 16 along the setting axis 3 for driving in the fastening element
- the setting tool 1 with the piston-cylinder unit 10 has a gas pressure spring or a pneumatic or gas-pressure energy store as the energy store 15, which is activated by moving the piston 11 into the cylinder 13 is clamped in, with air or gas being compressed in the cylinder 13, the pressure of which is used to move the piston 11 for driving the fastening element 2 into the anchorage.
- the compression of the air or the gas in the cylinder 13 of the piston-cylinder unit 10 is referred to here as “tensioning” the energy store 15 and can generally also be understood as storing energy in the energy store 15 .
- the invention is not limited to the piston-cylinder unit 10 as the energy store 15, but the setting tool 1 according to the invention can also have another energy store, in particular a helical compression spring also arranged coaxially to the setting axis 3 as a tensionable energy store (not shown).
- the setting tool 1 In order to tension the energy store 15, that is to say to store energy in the energy store 15, the setting tool 1 according to the invention has a tensioning device 18, which is shown in FIG.
- the tensioning device 18 tensions the energy store 15 by moving the piston 11 in the tensioning direction 17 opposite to the driving-in direction 16, with the tensioning device 18 displacing the piston 11 into the cylinder 13 and thereby compressing the air or the gas in the cylinder 13 and thereby the energy store 15 tensions.
- Figure 2 shows the tensioning device 18 diagonally to the side from below, i.e. from the direction of the handle 5. Traction means winches 19 and an electric motor 24 of the tensioning device 18 are therefore located in Figure 2 above the piston-cylinder unit 10, whereas they are in Figure 1 underneath, that is, on the side of the piston-cylinder unit 10 on which the handle 5 is also arranged.
- the tensioning device 18 has two traction means winches 19, the traction means 20 of which run in two tangential planes lying opposite one another with respect to the setting axis 3 of the setting tool 1 (FIG. 2).
- the tangential planes are planes parallel to an axial plane of the setting axis 3 of the setting tool 1 laterally next to and radially outside of the piston-cylinder unit 10 and the driver 14.
- the two tangential planes are located, in which the traction means 20 of the two traction means winches 19 run, with respect to the piston-cylinder unit 10 opposite each other.
- the traction winches 19 can be cable winches, for example; in the exemplary embodiment of the setting device 1 according to the invention, the two traction winches 19 are designed as pulley blocks with a 2:1 gear reduction.
- the Traction means 20 are ropes that can be wound onto traction means rollers 21 that are arranged coaxially and rigidly with one another on a common tubular hollow shaft 22 .
- An axis of rotation 23 of the two traction rollers 21 runs tangentially to the setting axis 3 of the setting tool 1.
- the traction rollers 21 are pulleys, but cable drums can also be used as traction rollers 21, for example.
- a rotary drive of the hollow shaft 22 with the two traction rollers 21 takes place by means of the electric motor 24 via a spur gear 25 as a reduction gear, which is located on the right-hand side of the setting tool 1 in the housing 4 and the handle 5 viewed in the driving direction 16, and a claw coupling as releasable clutch 26.
- the electric motor 24 is shown in Figure 2 with dotted lines so that it does not cover the spur gear 25.
- the spur gear 25 is arranged in a tangential plane to the setting axis 3 .
- the electric motor 24 and the traction mechanism rollers 21 of the traction mechanism winches 19 are located below the piston-cylinder unit 10 in the area of a transition from the housing 4 to the handle 5, as can be seen in FIG. “Below” or “below” means a peripheral area of the housing 4 in which the handle 5 is arranged.
- the tensioning device 18 is drawn from below, that is seen from the direction of the handle 5, which is why in Figures 2 to 4 the electric motor 24 and the hollow shaft 22 with the traction rollers 21 above the piston Cylinder unit 10 are located.
- the hollow shaft 22 with the two traction rollers 21 is rotatably and axially displaceably arranged on a shaft 27, which is rotatably mounted in the housing 4 of the setting tool 1 and on which a last gear wheel is arranged as the output wheel 28 of the spur gear 25, which is connected to the electric motor 24 via the spur gear 25 can be driven in rotation.
- the claw clutch forming the releasable clutch 26 is automatically shifting, it has a helical gear 29 with a spindle 30 and a nut 31 for engagement and disengagement, the nut thread of which is in threaded engagement with a screw thread of the spindle 30 ( Figures 3 and 4).
- the spindle 30 is a tubular hollow spindle which is coaxial with and rigid with the hollow shaft 22 and the traction rollers 21 .
- the spindle 30 can be rotated together with the hollow shaft 22 and the traction rollers 21 and is axially displaceable on the shaft 27, which is rotatably mounted in the housing 4 of the setting tool 1 Dog clutch running clutch 26 in a connecting clutch state and as "disengaging" a bringing of the clutch 26 referred to in a released clutch state.
- the nut 31, which is in threaded engagement with the spindle 30, is held in a rotationally fixed manner by a spring element 32, which in the exemplary embodiment is designed as a U-shaped bow spring bent from a sheet metal strip.
- a spring element 32 which in the exemplary embodiment is designed as a U-shaped bow spring bent from a sheet metal strip.
- One end of the spring element 32 is fixed to the housing in the housing 4 of the setting tool 1 on a bearing block 56 of the spur gear 25, to which the electric motor 24 is also attached, and with its other end resiliently engages the hollow shaft 22 and the shaft 27 in the axial direction and the Nut 31 non-rotatably holding on the nut 31.
- the clutch 26 is arranged coaxially to the hollow shaft 22 and to the shaft 27 between the helical gear 29 and the output gear 28 of the spur gear 25 .
- the clutch 26 has a first clutch part 33 and a second clutch part 34 , both of which are arranged coaxially with the hollow shaft 22 and with the shaft 27 .
- Both coupling parts 33, 34 have turret-like claws 57, 58 which are arranged on the end faces of the coupling parts 33, 34 facing one another on the circumferences of the coupling parts 33, 34 and each protrude in the direction of the other coupling part 34, 33.
- the first coupling part 33 is rigidly arranged on the output gear 28 of the spur gear 25 and the second coupling part 34 is rigidly arranged on an end of the spindle 30 of the helical gear 29 that is remote from the traction mechanism rollers 21 and faces the output gear 28 .
- the nut 31 tensions the spring element 32 axially with respect to the hollow shaft 22 and the shaft 27 in the sense of an engagement of the claw coupling forming the detachable coupling 26.
- the spring element 32 moves the spindle 30 via the nut 31 together with the hollow shaft 22 with the two traction mechanism rollers 21 and the second coupling part 34, which is arranged at the end of the spindle 30, axially to the first Coupling part 33 such that the jaws 57, 58 of the jaw clutch come between each other and the jaw clutch is engaged.
- the engaged claw clutch transmits a rotation of the output gear 28 of the spur gear 25 via the spindle 30 of the helical gear 29 to the hollow shaft 22 with the traction mechanism rollers 21 in such a way that a rotary drive of the spur gear 25 with the electric motor 24 causes the traction mechanism 20 to tension the energy store 15 to the Traction rollers 21 can be wound up.
- the helical gear 29 and the spring element 32 form an engagement mechanism for automatic engagement of the clutch 26 when unwinding or at the end of the unwinding of the traction means 20 from the traction means rollers 21.
- the traction mechanism 20 runs around housing-fixed deflection rollers 35 and then axis-parallel to the setting axis 3 and then around axially movable deflection rollers 36 and from the axially movable deflection rollers 36 ( Figure 2) back axis-parallel, where the traction mechanism 20 is in the housing 4 of the setting tool 1 are fixed.
- the movable deflection rollers 36 are rotatably mounted on two clamping carriages 37 which are guided in the housing 4 so that they can be displaced axially parallel on both sides of the piston-cylinder unit 10 .
- the movable deflection rollers 36 are rotatably mounted on or in the two clamping carriages 37 about a common axis, which intersects the setting axis 3 of the setting tool 1 at right angles.
- the traction device 20 When winding the traction device 20 onto the traction device rollers 21, the traction device 20 pulls the clamping carriage 37 in the clamping direction 17. Inwards in the direction of the setting axis 3 from Claws 38 protruding from the clamping carriage 37 engage over the closed, front end of the piston 11 , whereby when the clamping carriage 37 is pulled in the clamping direction 17 , the piston 11 is moved into the cylinder 13 and in this way clamps the energy store 15 .
- the clamping forces with which the claws 38 act on the piston 11 that forms the driver 14 when the energy store 15 is clamped balance out in such a way that the piston 11 is free from a tilting moment about a radial axis of the piston 11 radially to the setting axis 3 is tensioned.
- the spring element 32 which is pretensioned by the winding of the traction mechanism 20 onto the traction mechanism rollers 21 in the sense of disengaging the claw clutch, displaces the hollow shaft 22 with the traction mechanism rollers 21 together with the helical gear 29 and the second clutch part 34 arranged on the spindle 30 of the helical gear 29 away from the output wheel 28 of the spur gear 25 and thereby brings the claws 57, 58 of the two clutch parts 33, 34 of the clutch 26 out of engagement.
- the claw coupling forming the automatically releasing clutch 26 releases automatically when the driver 14 reaches the rear end position by relieving the torque required for winding the traction means 20 onto the traction means rollers 21 for tensioning the energy store 15 .
- the traction means 20 are unwound from the tensioning carriages 37 by the traction mechanism rollers 21 which, during movement in the tensioning direction 17 when the energy store 15 is tensioned, tension return springs 42 which act on the tensioning carriage 37 via return ropes 44 running around deflection rollers 43 . If the claw coupling disengages when the driver 14 reaches the rear end position, the return cables 44 move the tensioning slides 37 in the driving-in direction 16 to the front end position, unwinding the traction means 20 from the traction mechanism rollers 21 and thereby causing the traction mechanism rollers 21 to rotate.
- the rotation of the traction mechanism rollers 21 when the traction mechanism 20 is unwound moves the nut 31 in relation to the spindle 30 of the helical gear 29 away from the output gear 28 of the spur gear 25 and away from the clutch 26 and towards the traction mechanism rollers 21.
- the spring element 32 is relaxed and oppositely biased to engage the dog clutch.
- a roller 45 is arranged on a shaft 46, which is arranged radially with respect to the traction roller 21 and can be moved radially with respect to the traction roller 21 under the action of a spring. In its position shown in Figure 3, the roller 45 prevents the movement of the traction roller 21 axially in the direction of the clutch 26 and thereby prevents the engagement of the claws 57, 58 of the clutch 26.
- the clamping carriage 37 collides with a releaser 47 which can be moved parallel to the axis by a few millimeters and which has a release cable 48 Roller 45 pulls away radially so far from the axis of the traction roller 21 that the traction roller 21 can pass axially on the roller 45 .
- the spring element 32 engages the claws 57, 58 of the clutch 26 again, so that the traction means 20 can be wound back onto the traction means rollers 21 and the energy store 15 can be tensioned again in this way.
- the clamping carriages 37 move inwards again, as a result of which their claws 38 engage over the front face of the piston 11 in such a way that the piston 11 or the energy store 15 can be clamped again.
- the tensioning of the energy store 15 is terminated before the driver 14 reaches the rear end position, before the disengaging device 41 moves the tensioning carriages 37 outwards and disengages their claws 38 from the driver 14 .
- the setting tool 1 remains with the tensioned energy store 15 until the trigger 6 is actuated.
- the electric motor 24 is again energized in the clamping direction 17. It moves the driver 14 into the rear end position, where the disengagement device 41 moves the clamping carriage 37 outwards, whereupon the energy store 15 moves the driver 14 in the driving-in direction 16 .
- the tensioning device 18 has a freewheel 49 as a reverse rotation lock.
- a freewheel is a clutch that only works in one direction of rotation and transmits torque in only one direction of rotation.
- the freewheel 49 used as a reverse rotation lock prevents the tension means 20 from unwinding from the tension means rollers 21 by the tensioned energy store 15, which pulls on the tension means 20 via the driver 14 when it is tensioned, if and for as long as the in the exemplary embodiment of the invention dog clutch used as an automatically releasing clutch 26 is engaged.
- the exemplary embodiment of the invention uses a form-fitting pawl freewheel 49, but force-fitting clamping roller or clamping body freewheels (not shown) can also be used.
- the output gear 28 of the spur gear 25 is part of the freewheel 49: it has spur gearing 50 with sawtooth-shaped teeth, with which one or more - in the exemplary embodiment two - pawls 51 Cooperation, which are pivotally mounted about pivot axes 52 fixed to the housing in such a way that they can engage with the teeth of the spur gearing 50 of the output gear 28 .
- Catch springs 53 urge the pawls 51 into engagement with the teeth of the spur gearing 50 of the driven wheel 28 in such a way that the driven wheel 28 cannot be rotated in the unwinding direction of the traction rollers 21 .
- the clutch 26 is engaged, the traction mechanism 20 cannot therefore be unwound from the traction mechanism rollers 21 and the energy store 15 remains tensioned even when the electric motor 24 is switched off.
- the teeth of the spur gearing 50 of the output gear 28 of the spur gear 25 When rotating in the winding direction, the teeth of the spur gearing 50 of the output gear 28 of the spur gear 25, due to their sawtooth shape, push the pawls 51 out of engagement in such a way that the output gear 28 of the spur gear 25 can rotate in the winding direction.
- the traction rollers 21 rotate in the winding-up direction with the driven wheel 28 via the engaged clutch 26 .
- the driven wheel 28 of the spur gear 25 can also be understood as a ratchet wheel 55 of the freewheel 49 .
- the end toothing 50 with the sawtooth-shaped teeth can also be understood as a locking toothing or as a circumferential locking toothing.
- the freewheel 49 has two pawls 51 which are arranged in such a way that they engage in the spur gearing 50 of the output gear 28 of the spur gear 25 at two opposite points.
- the face spline 50 has an odd number of teeth, so that the two pawls 51 are offset from each other with respect to the teeth of the face spline 50 by a half tooth and a half tooth in the circumferential direction of the face spline 50 .
- the freewheel 49 allows a maximum rotation of half the distance between the teeth of the spur gearing 50 in the direction of reverse rotation.
- the electric motor 24 is switched off when the energy store 15 is tensioned, shortly before the driver 14 reaches its rear end position, i.e. before the inclined surfaces 40 of the disengaging device 41 direct the tensioning carriage 37 outwards and thereby disengage their claws 38 from the piston forming the driver 14 11 the piston Cylinder unit 10 of the energy store 15 occurs. If the trigger 6 is actuated with the driver 14 shortly before its rear end position and the energy store 15 is charged, the electric motor 24 is switched on again, rotating in the winding direction.
- the driver 14 is pulled back into its rear end position, with the inclined surfaces 40 of the disengagement device 41 directing the clamping slides 37 outwards and thereby disengaging the claws 38 of the clamping slides 37 from the piston 11 forming the driver 14 .
- the tensioned energy store 15 moves the driver 14 in the driving-in direction 16 into its front end position, with the driver 14 moving the nail brought from the magazine 8 onto the setting axis 3 or, in general, the fastening element 2 in the driving-in direction 16 via its ram 12 .
- the tension means 20 are relieved, whereby the clutch 26 is torque-free.
- the claws 57, 58 of the clutch 26 disengage automatically as a result of the torque relief, as a result of which the hollow shaft 22 with the traction rollers 21 can be rotated freely on the shaft 27.
- the return springs 42 which are tensioned when the energy store 15 is tensioned, move the tensioning carriages 37 in the driving-in direction 16 to the front end position, with the tensioning carriages 37 unwinding the traction means 20 from the traction means rollers 21.
- the helical gear 29 prestresses the spring element 32 in the direction of engagement of the clutch 26, with the roller 45, which rests against the end face of one traction roller 21, preventing the claw clutch from being engaged.
- the claws 38 of the tensioning slides 37 again engage with the piston 11 forming the driver 14 and the tensioning slides 37 pull the roller 45 via the releaser 47 and the release cable 48 radially to the outside of a circumference of the traction mechanism roller 21 in such a way that the Traction rollers 21 are again axially displaceable in the direction of the output gear 28 of the spur gear 25.
- the spring element 32 which is prestressed in the engagement direction by the helical gear 29, engages the clutch 26 and the electric motor 24, which has been rotating in the tensioning direction since the trigger 6 was actuated, winds the traction mechanism 20 back onto the traction mechanism rollers 21, thereby tensioning the energy store 15 again.
- the electric motor 24 is switched off just before the driver 14 reaches its rear end position. There is no reversal of the direction of rotation of the electric motor 24, the electric motor 24 rotates exclusively in the clamping direction.
- An accumulator as an electrical energy store 54 for the power supply of an electric motor 24 of the setting tool 1 is detachably arranged on an end of the handle 5 remote from the setting axis 3 .
- Setting tool Setting tool 30 Spindle Fastening element 31 Nut Setting axle 32 Spring element Housing 33 First coupling part Handle 34 Second coupling part Trigger 35 Deflection roller fixed to the housing, free 36 Movable deflection roller Magazine 37 Clamping carriage Magazine spring 38 Claw Piston-cylinder unit 39 Piston spigot 40 Sloping surface of the plunger 41 Disengagement device, cylinder 42 Return spring, driver 43 Deflection roller, energy storage device 44 Retrieval cable, drive-in direction 45 Pulley, tensioning direction 46 Shaft, tensioning device 47 Releaser, traction device winch 48 Release cable, traction device 49 Freewheel, traction device pulley 50 Spur gearing, hollow shaft 51 Pawl, axis of rotation, 52 Pivot axis, electric motor, 53 Ratchet spring, spur gear, 54 Electric energy storage clutch, 55 Ratchet wheel, shaft 56 Bearing block, output gear 57 Claw, helical gear 5 8 claw
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Portable Nailing Machines And Staplers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022104882.9A DE102022104882A1 (de) | 2022-03-02 | 2022-03-02 | Setzgerät |
| PCT/EP2023/055076 WO2023166008A1 (de) | 2022-03-02 | 2023-03-01 | Setzgerät |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4486539A1 true EP4486539A1 (de) | 2025-01-08 |
Family
ID=85476229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23708755.6A Withdrawn EP4486539A1 (de) | 2022-03-02 | 2023-03-01 | Setzgerät |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4486539A1 (de) |
| DE (1) | DE102022104882A1 (de) |
| WO (1) | WO2023166008A1 (de) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007142996A2 (en) * | 2006-05-31 | 2007-12-13 | Stanley Fastening Systems, L.P. | Fastener driving device with a planetary gear cable lift and release mechanism |
| JP5099413B2 (ja) * | 2007-03-26 | 2012-12-19 | 日立工機株式会社 | 打込機 |
| JP5424009B2 (ja) * | 2008-01-15 | 2014-02-26 | 日立工機株式会社 | 留め具打込機 |
| US11712791B2 (en) | 2018-04-26 | 2023-08-01 | Koki Holdings Co., Ltd. | Driving tool |
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2022
- 2022-03-02 DE DE102022104882.9A patent/DE102022104882A1/de active Pending
-
2023
- 2023-03-01 WO PCT/EP2023/055076 patent/WO2023166008A1/de not_active Ceased
- 2023-03-01 EP EP23708755.6A patent/EP4486539A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023166008A1 (de) | 2023-09-07 |
| DE102022104882A1 (de) | 2023-09-07 |
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