EP4486538A1 - Setzgerät - Google Patents
SetzgerätInfo
- Publication number
- EP4486538A1 EP4486538A1 EP23708754.9A EP23708754A EP4486538A1 EP 4486538 A1 EP4486538 A1 EP 4486538A1 EP 23708754 A EP23708754 A EP 23708754A EP 4486538 A1 EP4486538 A1 EP 4486538A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- driver
- setting tool
- transmitter
- axis
- end position
- 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- Withdrawn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
-
- 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
- B25C1/04—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure
- B25C1/047—Mechanical details
Definitions
- the invention relates to a setting tool for driving a fastening element into an anchor base 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.
- the fastening element is in particular a nail.
- 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 store, the piston of which can be moved into a cylinder with an electric motor via a cable pull, thereby compressing air in the cylinder.
- a cable of the control cable is released from a pulley of the control cable, 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 keep the forces of a setting device that counteract the driving of a fastening element into an anchor base small. This does not apply to masses that have to be accelerated to drive in the fastener.
- the setting tool has a driver for driving the fastening element into an anchor base.
- the anchor base is, for example, a component made of wood, concrete or masonry, with this list being exemplary and not exhaustive.
- the driver is movable along and on an axis of the setting tool.
- the setting tool has an energy store for moving the driver from a rear end position in a driving direction into a front end position, a tensioning device for tensioning the energy store, and a transmitter.
- the transmitter can be displaced parallel to the axis and is offset parallel to this axis.
- the transmitter is coupled in parallel offset with the driver, that is, the transmitter attacks parallel to the axis on the driver.
- An element of the setting tool according to the invention is referred to as a “driver”, which is moved by the tensioned energy store in the driving direction to drive the fastening element into the anchor base and moves the fastening element in the driving direction.
- the driver is in particular in direct contact with the fastening element.
- the driver can also be or have an assembly consisting of several components. The driver is therefore the element which, in order to drive the fastening element into the anchorage, transmits energy or movement of the energy store 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 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. If the energy store is a piston-cylinder unit, a piston is pushed into a cylinder of the piston-cylinder unit for tensioning, in such a way that a gas contained in the cylinder is compressed. Other energy stores are possible.
- the tensioning device moves the transformer, which is coupled to the driver in the front end position of the driver, in such a way that the driver moves with the transformer from the front end position in the tensioning direction to the rear end position, with the energy store being tensioned, in particular by the driver.
- the driver In the rear end position of the driver, the driver is separated from the transmitter in such a way that the driver moves from the rear end position in the driving direction to the front end position independently of the clamping device and the transmitter.
- the energy store moves the driver without the tensioning device and without the transmitter, so that no energy from the energy store has to be used to move the tensioning device or the transmitter when the fastener is driven in.
- the invention has the advantage that when the fastening element is being driven into the anchorage, the transmitter and the tensioning device are driven neither by the driver nor by the energy storage device, which means that no energy from the energy storage device has to be used to move the tensioning device in particular during driving in, and therefore not for the Driving in is available.
- That the transmitter has a parallel offset to the axis means that the transmitter does not intersect the axis, but is arranged around the axis.
- the driver when coupled to the transducer, is located radially of the axis within the transducer.
- the parallel offset and the fact that the transmitter is coupled to the driver offset in particular parallel to the axis, or acts on it, has the advantage that the axial length of the setting tool according to the invention can be kept small.
- the driver is preferably automatically coupled to the transmitter in its front end position and/or automatically separated from the transmitter in its rear end position. This means that in any case the driver and the transmitter do not have to be manually coupled and/or uncoupled by a user.
- separating the driver from the transformer in the rear end position triggers the driving-in process, i.e. after the driver has been separated from the transformer, the tensioned energy store transfers energy to the driver, in particular only to the driver, without any further action, thereby turning the driver into the Driving direction applied or moved forward towards the front end position.
- the setting device has a disengagement surface running obliquely to the axis of the setting device for automatic separation of the driver from the transformer.
- the driver reaches this surface shortly before the rear end position of the driver.
- the disengagement surface is positioned and oriented to disengage the transformer from the driver when the transformer is moved to the rear end position.
- the driver can now be moved forwards in the driving direction to its front end position, independently of the transformer, and is moved or at least acted upon by the energy store in the driving direction.
- a pulley block is to be understood here as a mechanical device with a traction device that is guided around at least one deflection and that translates a force and at the same time reduces a path, ie a special form of mechanical gearing.
- the traction means is, for example, a type of rope that preferably does not stretch or stretches very little when subjected to tensile stress and that can be guided and wound up in a limp manner or at least around the deflection.
- the tensioning device acts on the transformer at a plurality of points of attack distributed uniformly or non-uniformly over a circumference at a distance from the axis of the setting tool.
- the points of application can be arranged in a radial plane relative to the axis of the setting tool or can be offset relative to one another in the direction of the axis of the setting tool.
- the tensioning device has two or more pulley blocks that act on the contact points of the transformer that are distributed over the circumference.
- clamping devices are also possible, which act on the contact points on the transformer, which are offset relative to one another in the circumferential direction.
- the points of application of the tensioning device are preferably arranged on the transmitter in such a way that there is a symmetrical introduction of force from the transmitter to the driver when the energy store is tensioned. This means that the clamping force or clamping forces exerted by the clamping device when clamping the energy storage device balance each other out with regard to a tilting moment that they generate because of the application of force at a distance from the axis of the setting tool. A tilting moment about a radial axis to the axis of the setting tool on the driver is avoided.
- the tensioning device moves the transformer in the tensioning direction to the rear end position, where the transformer is separated from the driver.
- the transmitter can be moved in the driving direction independently of the clamping device.
- the setting tool preferably has a return spring element which is connected to the transmitter, which is tensioned when the transmitter moves in the tensioning direction and which moves the transmitter again in the driving-in direction to the front end position after it has been separated from the driver.
- FIG. 1 shows a schematic axial section representation of a setting tool according to the invention
- FIG. 2 shows a perspective representation of parts of a driving mechanism of the setting tool from FIG. 1 with a driver in a front end position;
- Figure 4 is an enlargement of Figure 3.
- the setting tool 1 according to the invention shown in FIG. 1 is provided for driving a fastening element 2, for example a nail, into an anchor base (not shown) made of wood, for example.
- the setting tool 1 has an axis 3 and a housing 4 which encloses the axis 3 and which can be regarded as 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, which is arranged on the housing 4 almost radially to the axis 3 somewhat behind a longitudinal center of the housing 4 .
- An accumulator 6 for powering an electric motor 7 of the setting tool 1 is detachably arranged at one end of the handle 5 remote from the axis 3 .
- the setting tool 1 Near the front end of the housing 4, the setting tool 1 has a magazine 8 for the fasteners 2, from which the nails forming the fasteners 2 pass individually coaxially onto the axis 3 of the setting tool 1 by means of a magazine spring 9.
- a piston-cylinder unit 10 is arranged coaxially in the housing 4, the piston 11 of which has a coaxial tappet 12 which is projected forward, ie in the direction of the nail which forms the fastening element 2 and has been brought out of the magazine 8 onto the axis 2 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 .
- the piston 11 together with the plunger 12 forms a driver 14 of the setting tool 1 for driving the fastening element 2 into the anchor base (not shown).
- the plunger 12 alone to form the driver, which is acted upon, for example, by a helical compression spring.
- 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 from a rear end position in a driving direction 16 along and on the axis 3 to a front end position for driving the fastener 2 into the non anchor ground shown.
- the driving-in direction 16 is shown in the figures with an arrow, as is a clamping direction 17 opposite it.
- the setting tool 1 with the piston-cylinder unit 10 has a pneumatic or gas pressure energy store 15, which is tensioned by moving the piston 11 into the cylinder 13, with air or gas being compressed in the cylinder 13, whose Pressure for moving the piston 11 for driving the fastener 2 is used in 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 coaxially arranged helical compression spring, as a mechanical energy store in this case (not shown).
- another energy store in particular a coaxially arranged helical compression spring, as a mechanical energy store in this case (not shown).
- the setting tool 1 In order to tension the energy store 15, i.e. to store energy in the energy store 15, the setting tool 1 according to the invention has a tensioning device 18 which tensions the energy store 15 by moving the piston 11 from the front end position in the tensioning direction 17 opposite to the driving direction 16 moves, wherein the tensioning device 18 moves the piston 11 into the cylinder 13 and thereby compresses the air or the gas in the cylinder 13 and thereby tensions the energy store 15 .
- the tangential planes are planes parallel to an axial plane of the axis 3 laterally next to and radially outside the piston-cylinder unit 10.
- the two tangential planes in which the traction means 20 of the two pulley blocks 19 run are located with respect to the piston-cylinder unit 10 versus.
- the ropes forming the traction means 20 of the two pulley blocks 19 can each be wound onto a rope sheave 21 which is arranged coaxially and rigidly with one another on a common shaft 22 .
- An axis of rotation 23 of the two cable pulleys 21 runs tangentially to the axis 3 of the setting tool 1.
- the shaft 22 with the two cable pulleys 21 is driven in rotation by means of the electric motor 7 via a spur gear 24 with a first pinion 39, which meshes with a first gear 25, the is coaxial and non-rotatable with a second pinion 40 which meshes with the second gear 26.
- the first pinion 39 is rotationally fixed to a motor shaft of the electric motor 7 and can be driven in rotation with the electric motor
- the second gear wheel 26 is rotationally fixed to the shaft 22 of the two cable pulleys 21 in such a way that the shaft 22 and the two cable pulleys 21 together with the second gear wheel 26 of the spur gear 24 rotate.
- the electric motor 7 is arranged parallel to the two cable pulleys 21 , that is to say also tangentially to the axis 3 of the setting tool 1 .
- the electric motor 7 and the pulleys 21 are located below the piston-cylinder unit 10, ie in the area of a transition from the housing 4 to the handle 5, as can be seen in FIG.
- the electric motor 7 and the pulleys 21 are drawn above the piston-cylinder unit 10 for the sake of clarity, and the electric motor 7 is indicated with dashed lines.
- Another arrangement of the electric motor 7 is possible, in particular the electric motor 7 can be arranged radially to the axis of rotation 23 of the cable pulleys 21 and parallel to or in the handle s (not shown), for example by means of a bevel gear or a worm gear.
- the cables forming the traction means 20 of the block and tackle 19 run from the pulleys 21 around a deflection roller 27 fixed to the housing in each case, from the deflection rollers fixed to the housing 27 forward parallel to axis 3 of the setting tool 1 around axis-parallel movable deflection rollers 28, around which the traction means 20 are deflected back by 180° parallel to the axis, where the traction means 20 seen in the direction of axis 3 is approximately level with the axis of rotation 23 of the cable pulleys 21 are fixed in the housing 4 of the setting tool 1.
- a first common axis of rotation 29 of the housing-fixed deflection rollers 27 runs parallel to the axis of rotation 23 of the pulleys 21 and thus tangential to the axis 3 of the setting tool.
- a second common axis of rotation 30 of the movable deflection rollers 28 runs parallel to the first common axis of rotation 29 of the movable deflection rollers 28 and intersects the axis 3 of the setting tool 1 radially.
- the movable deflection rollers 28 are rotatably mounted on transmitters 31, which are offset parallel to the axis 3 and are arranged opposite one another laterally next to the piston 11 of the piston-cylinder unit 10 and which can be displaced in the housing with sliding guides 32 parallel to the axis 3 of the setting tool 1 4 of the setting tool 1 are guided.
- the parts of the sliding guides 32 that cover the transmitter 31 are not shown.
- the transmitters 31 On their front sides, the transmitters 31 have claws 33 which protrude radially inward and which bear against the closed front end of the piston 11 in order to tension the energy accumulator 15 .
- the transmitters 31 To tension the energy store 15, the transmitters 31 are pulled into the rear end position in the tensioning direction 17 by winding the traction means 20 onto the pulleys 21 with the pulley blocks 19 of the tensioning device 18, in the process pushing the piston 11 into the cylinder 13, thereby removing the air or compress the gas in the cylinder 13 and thereby tension the energy store 15 .
- the movement of the driver 14, which the piston 11 forms together with the plunger 12 stretches the energy store 15 from the front end position in the clamping direction 17 opposite the driving direction 16 into the rear end position.
- the clamping device 18 acts on the driver 14 at points distributed over a circumference at a distance from the axis 3 of the setting tool 1.
- the clamping device 18 engages via the claws 33 of the transmitter 31 at two radially opposite one another with respect to the axis 3 Circumferential points on the driver 14 both eccentrically, namely at a distance from the axis 3 of the setting tool 1, and symmetrically to the axis 3.
- tilting moments about imaginary radial axes or transverse axes of the piston 11 forming the driver 14 are balanced radially to the axis 3 of the setting tool 1, i.e. the driver 14 is torque-free during and for the purpose of clamping the energy store 15 from the clamping device 18 in the clamping direction 17 in the rear end position moved.
- Two pairs of pins 34 protrude coaxially from the transmitters 31 in the tangential planes to the axis 3 of the setting tool 1 according to the invention, upwards, i.e. away from the handle 5, and downwards, i.e. in the direction in which the handle 5 protrudes .
- the pins 34 interact with disengagement surfaces 35 which are arranged in the housing 4 of the setting tool 1 in a manner fixed to the housing.
- the release surfaces 35 run obliquely to the axis 3 of the setting tool 1 with an increasing distance from the axis 3 from the front to the rear in such a way that the pins 34 of the transmitters 31 come into contact with the respectively assigned release surfaces 35 shortly before the transmitters 31 reach the rear end position .
- the release surfaces 35 move the transmitter 31 on the pin 34 radially away from the axis 3 of the setting tool 1 in such a way that the claws 33 disengage from the piston 11 forming the driver 14.
- the driver 14 is automatically separated from the transmitters 31 in the rear end position and is accelerated and moved forward by the air pressure or gas pressure in the cylinder 13 of the piston-cylinder unit 10, and in the process moves the coaxial to the ram 12 Axis 3 arranged fastener 2 forward out of the setting tool 1, whereby the fastener 2 can be driven into the anchorage, not shown.
- the release surfaces 35 are straight, but they can also run in an arc, for example.
- the driver 14 By separating the driver 14 from the transmitters 31 in the rear end position of the driver 14, the driver 14 is also separated from the tensioning device 18 and its pulley blocks 19, the traction means 20 of which are deflected around the movable deflection rollers 28 of the transmitter 31 and indirectly via the transmitter 31 engage the driver 14 when the claws 33 are in engagement with the driver 14 during the movement of the transmitter 31 together with the driver 14 in the clamping direction 17 .
- the driver 14 moves independently of the clamping device 18 with its Pulley blocks 19.
- Return spring elements 36 of a return system act on the transducers 31, which are tensioned to the rear when the transducers 31 move in the tensioning direction 17 and, after the transducers 31 have been separated from the driver 14 in the rear end position, move the transducers 31 again in the driving direction 16 move forward to the front end position.
- the return spring elements 36 are helical tension springs, which act on the transmitters 31 via cables as connecting traction means 37 of the return system, which are deflected around second deflection rollers 38 of the return system fixed to the housing.
- Tension coil springs as return spring elements 36 are not mandatory for the invention; other return spring elements or return systems are also possible (not shown). Likewise, it is not mandatory for the invention that the return spring elements 36 act indirectly on the transformers 31 via the traction means 37 of the return system; the return spring elements 36 can also act directly on the transformers 31 (not shown). In the exemplary embodiment, the traction means 37 of the return spring elements 36 run in the same tangential planes as the traction means 20 of the pulley blocks 19 of the tensioning device 18, which is also not essential for the invention.
- the tensioning means 37 of the return system tensioned by the return spring elements 36 act on the transmitters 31, which are moved outwards by the release surfaces 35, at an angle inwards, i.e. with a force component in the direction of the axis 3 of the setting tool 1.
- the transmitters 31 move inwards in the front end position moved in the direction of the axis 3, whereby their claws 33 come into engagement with the driver 14 again in the front end position.
- the driver 14 is automatically coupled to the transformers 31 in the front end position.
- Setting tool Setting tool 29 first common axis of rotation fastening element 30 second common axis of rotation axis 31 transmission housing 32 sliding guide handle 33 claw accumulator 34 pin electric motor 35 release surface magazine 36 return spring element magazine spring 37 traction mechanism of the return system piston-cylinder unit 38 deflection roller of the return system piston 39 first pinion ram 40 second Pinion Cylinder Driver Energy storage Drive-in direction Tensioning direction Pulley block Traction means Cable pulley Shaft Rotational axis of the cable pulleys 21 Spur gear First gear Second gear Housing-fixed deflection pulley Movable deflection pulley
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Portable Nailing Machines And Staplers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022104869 | 2022-03-02 | ||
| DE102023100345.3A DE102023100345A1 (de) | 2022-03-02 | 2023-01-10 | Setzgerät |
| PCT/EP2023/055075 WO2023166007A1 (de) | 2022-03-02 | 2023-03-01 | Setzgerät |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4486538A1 true EP4486538A1 (de) | 2025-01-08 |
Family
ID=85476124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23708754.9A Withdrawn EP4486538A1 (de) | 2022-03-02 | 2023-03-01 | Setzgerät |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP4486538A1 (de) |
| WO (1) | WO2023166007A1 (de) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006000517A1 (de) * | 2006-12-12 | 2008-06-19 | Hilti Ag | Handgeführtes Eintreibgerät |
| DE102010063964A1 (de) * | 2010-12-22 | 2012-06-28 | Hilti Aktiengesellschaft | Eintreibgerät |
| DE102011089720A1 (de) * | 2011-12-23 | 2013-06-27 | Hilti Aktiengesellschaft | Eintreibvorrichtung |
| US11712791B2 (en) | 2018-04-26 | 2023-08-01 | Koki Holdings Co., Ltd. | Driving tool |
-
2023
- 2023-03-01 WO PCT/EP2023/055075 patent/WO2023166007A1/de not_active Ceased
- 2023-03-01 EP EP23708754.9A patent/EP4486538A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023166007A1 (de) | 2023-09-07 |
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