EP3481591B1 - Hand-held power tool device - Google Patents
Hand-held power tool device Download PDFInfo
- Publication number
- EP3481591B1 EP3481591B1 EP17739957.3A EP17739957A EP3481591B1 EP 3481591 B1 EP3481591 B1 EP 3481591B1 EP 17739957 A EP17739957 A EP 17739957A EP 3481591 B1 EP3481591 B1 EP 3481591B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bearing
- power tool
- intermediate shaft
- tool device
- drive
- 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.)
- Active
Links
- 230000005540 biological transmission Effects 0.000 claims 3
- 238000007789 sealing Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- 238000003801 milling Methods 0.000 description 7
- 238000009527 percussion Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
- B25B21/02—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/02—Construction of casings, bodies or handles
Definitions
- a hand-held power tool device with at least one drive housing, with at least one hammer mechanism housing and with at least one rotary hammer mechanism, which has at least one planetary gear with at least one ring gear, has already been proposed. So a corresponding tool according to the preamble of claim 1 is from BE 525 492 known.
- the invention is based on a hand-held power tool device with at least one drive housing, with at least one hammer mechanism housing and with at least one rotary hammer mechanism, which has at least one planetary gear with at least one ring gear.
- the ring gear be clamped between the drive housing and the hammer mechanism housing.
- a “handheld power tool device” should be understood to mean in particular at least a part, in particular a subassembly, of a handheld power tool.
- the handheld power tool device can also include the entire handheld power tool.
- the handheld power tool can be designed as any, advantageously electrical machine, but advantageously as a rotary impact wrench.
- a “drive housing” should be understood to mean, in particular, a unit which is provided to accommodate a drive unit of the handheld power tool, in particular completely. “Provided” is to be understood in particular as specifically programmed, designed and / or equipped.
- a “drive unit” is to be understood as meaning, in particular, a unit which is provided to convert, in particular, electrical energy into kinetic energy, in particular rotational energy.
- the drive unit has in particular at least one electric motor.
- the electric motor is designed in particular as an electric motor without a housing.
- a drive shaft of the drive unit is in particular formed at least partially by an armature shaft of the housing-less electric motor.
- a “percussion mechanism housing” is to be understood in particular as a unit which is provided to accommodate a percussion mechanism, in particular a rotary percussion mechanism, of the handheld power tool, in particular completely.
- a “rotary percussion mechanism” is to be understood as meaning, in particular, a percussion mechanism which is provided to convert an at least substantially continuous power output of a drive unit into a sudden angular momentum.
- the rotary hammer mechanism can in particular be designed as a cam rotary hammer mechanism or as a V-groove rotary hammer mechanism.
- a “planetary gear” is to be understood as meaning, in particular, a gear which has at least one planet connected to a planet carrier, which is coupled in the radial direction outward with a ring gear and / or in the radial direction inward with a sun gear.
- the sun gear, the planet and / or the ring gear can in particular be formed by round gearwheels or by non-circular gearwheels that are matched to one another.
- Several planetary gears can be connected in series and / or several stages can be interposed between the planetary gear and the ring gear.
- a “ring gear” is to be understood as meaning, in particular, a gear wheel that has a rim that is designed in the form of a cylinder jacket or in the form of an interrupted cylinder jacket.
- the ring gear is "clamped" between the drive housing and the striking mechanism housing is to be understood in particular as meaning that the drive housing and the striking mechanism housing each have at least one clamping surface which, in an assembled state, rest against at least one surface of the ring gear from opposite sides and each of which exert a clamping force on the ring gear.
- the ring gear is preferably clamped radially and / or axially between the drive housing and the hammer mechanism housing.
- Such a configuration makes it possible to provide a hand-held power tool device of the generic type with advantageous structural properties.
- an advantageously compact design, in particular an advantageously short length, of the handheld power tool device and / or an advantageously short tolerance chain can be achieved.
- the ring gear is fixed to the drive housing and to the hammer mechanism housing by means of at least one screw element.
- a “screw element” is to be understood as meaning, in particular, a screw or a screw nut.
- the ring gear is preferably fixed to the drive housing and / or to the hammer mechanism housing by means of a plurality of screw elements.
- the ring gear has at least one recess which is provided for the screw element to be passed through.
- the drive housing and / or the hammer mechanism housing have at least one thread recess which has a thread corresponding to a thread of the screw element.
- the drive housing, the striking mechanism housing and the ring gear are connected to one another by means of the screw element, the ring gear being arranged between the drive housing and on the striking mechanism housing.
- the screw element being arranged between the drive housing and on the striking mechanism housing.
- the hand-held power tool device have an impact mechanism cover which is formed in one piece with the ring gear.
- a "hammer mechanism cover” is to be understood in this context in particular as a cover element which is provided to close the rotary hammer mechanism at least to a large extent in the direction of at least one further handheld power tool unit, in particular in the direction of a drive unit.
- “at least a large part” should be understood to mean in particular at least 51%, preferably at least 65% and particularly preferably at least 75%.
- the hammer mechanism cover has at least one passage recess which is provided for at least partial passage of at least one shaft, in particular a drive shaft.
- In one piece is to be understood in particular to be at least cohesively connected, for example by a welding process, an adhesive process, an injection molding process and / or another process that appears sensible to a person skilled in the art, and / or be understood to be advantageously formed in one piece, such as, for example, by production from a cast and / or by production in a one-component or multi-component injection molding process and advantageously from a single blank.
- the hammer mechanism cover and the ring gear are formed at least essentially from a metallic material, preferably from a metallic sintered material.
- the hand-held power tool device have at least one intermediate shaft which is at least partially supported within the hammer mechanism cover.
- An “intermediate shaft” is to be understood in particular as a shaft of a drive train which is arranged in particular between a drive unit and an output shaft, in particular a handheld power tool.
- the at least one intermediate shaft is provided to transmit, in particular, a force and / or movement generated by the drive unit directly and / or indirectly to the output shaft.
- the intermediate shaft is at least partially designed as a planet carrier of the planetary gear.
- the intermediate shaft is at least partially supported within the hammer mechanism cover
- an end of the intermediate shaft facing away from an output shaft of the rotary hammer mechanism is rotatably supported within the hammer mechanism cover.
- “rotatably mounted” is to be understood in particular to mean that the intermediate shaft is provided to perform a rotational movement relative to the hammer mechanism cover, at least in one operating state.
- the hand-held power tool device have at least one intermediate shaft bearing for mounting the intermediate shaft, which is at least partially arranged within the hammer mechanism cover.
- an “intermediate shaft bearing” is to be understood in particular as a radial bearing which is provided to support the intermediate shaft in a rotatable manner.
- the intermediate shaft bearing is arranged directly on a feed-through recess in the hammer mechanism cover.
- the intermediate shaft bearing is in particular on a side of the rotary hammer mechanism facing an output shaft Striking mechanism cover arranged.
- the intermediate shaft bearing can in particular be designed as a slide bearing or roller bearing.
- the intermediate shaft bearing is preferably designed as a roller bearing, for example as a ball bearing, roller bearing or needle bearing. In this way, an advantageously low-friction mounting of the intermediate shaft can be achieved.
- an advantageously short overall length of the rotary hammer mechanism can be achieved.
- the hammer mechanism cover have at least one bearing receptacle, which is provided for receiving the intermediate shaft bearing.
- a “bearing receptacle” is to be understood in particular as an area formed at least partially by the hammer mechanism cover, which is provided for a stationary arrangement of the intermediate shaft bearing within the hammer mechanism cover.
- the bearing receptacle is in particular formed in one piece with the hammer mechanism cover.
- the bearing receptacle is arranged in the area of a feed-through recess in the hammer mechanism cover.
- the bearing receptacle is designed in particular at least partially as a hollow cylinder.
- the bearing receptacle has an at least essentially annular stop element for the intermediate shaft bearing at an end facing away from the hammer mechanism cover.
- the stop element is in particular formed in one piece with the bearing receptacle.
- an inner diameter of the bearing seat corresponds at least essentially to an outer diameter of the intermediate shaft bearing.
- the intermediate shaft bearing is preferably fixed in the bearing receptacle by a press fit.
- a “press fit” is to be understood in particular as a non-positive connection which can be designed as a transverse and / or longitudinal press fit.
- a “non-positive connection” is to be understood in particular as a releasable connection, with a holding force between two components being transmitted, preferably by a frictional force between the components. In this way, an advantageously simple, secure and / or permanent arrangement of the intermediate shaft bearing within the hammer mechanism cover can be achieved.
- a handheld power tool in particular an impact wrench, with at least one handheld power tool device according to the invention is proposed.
- an advantageously compact handheld power tool in particular an advantageously compact impact wrench, can be provided.
- the handheld power tool can have an advantageously short overall length.
- the handheld power tool device according to the invention is not intended to be restricted to the application and embodiment described above.
- the hand-held power tool device according to the invention can have a number of individual elements, components and units that differs from a number of individual elements, components and units mentioned herein in order to fulfill a mode of operation described herein.
- FIG. 1 shows a handheld power tool 34a, which is used as an impact wrench is formed, in a schematic partial sectional view.
- the handheld power tool 34a is designed as a cordless impact wrench.
- the handheld power tool 34a comprises a handle 80 which extends perpendicular to an axis of rotation 84a of a tool holder 86a of the handheld power tool 34a provided for receiving an insert tool (not shown here).
- the handle 80a comprises a battery holder 90a on a side 88a facing away from the handheld power tool 34a.
- the battery holder 90a is provided to accommodate a battery unit 92a for supplying power to the handheld power tool 34a.
- the handheld power tool 34a has a handheld power tool device 10a with a drive unit 12a and a rotary hammer mechanism 16a.
- Figure 2 shows the handheld power tool device 10 in a sectional illustration.
- the handheld power tool device 10a has a drive housing 72a and an impact mechanism housing 74a (cf. Figure 1 ).
- the drive housing 72a at least substantially completely encloses the drive unit 12a.
- the hammer mechanism housing 74a encloses the rotary hammer mechanism 16a at least essentially completely (cf. Figure 1 ).
- the drive unit 12a is designed as an electrical drive unit which is supplied with electrical energy by means of the rechargeable battery unit 92a.
- the drive unit 12a has an electric motor 26a without a housing, which is provided to convert the electrical energy provided by the rechargeable battery unit 92a into rotational energy.
- the electric motor 26a is designed as an open-frame motor, in which components of the electric motor 26a are individually mounted in the drive housing 72a.
- the drive unit 12a has a drive shaft 14a which is provided to transmit the rotational energy to the rotary hammer mechanism 16a.
- the drive shaft 14a is completely formed by an armature shaft 28a of the housing-less electric motor 26a.
- the armature shaft 28a is made in one piece.
- the rotary hammer mechanism 16a is designed as a V-groove rotary hammer mechanism.
- the rotary hammer mechanism 16a is provided to convert a continuous power output of the drive unit 12a into a sudden angular momentum.
- the power of the drive unit 12a is passed on to the insert tool by striking a hammer 96a of the rotary hammer mechanism 16a on a corresponding anvil 100a of an output spindle 15a by means of a pulse of high power intensity.
- the anvil 100a is formed in one piece with the output spindle 15a and the tool holder 86a.
- the striker 96a is mounted in such a way that axial movement and radial movement are possible.
- the axial movement is controlled by V-shaped grooves 98 (cf. Figure 3 ) and driver balls 97a (cf. Figure 1 ).
- a spring 138a provides the return movement of the striker 96a.
- the rotary hammer mechanism 16a has an intermediate shaft 18a which is at least essentially aligned with the drive shaft 14a. Furthermore, the handheld power tool device 10a has at least one bearing 20a for mounting the drive shaft 14a. The bearing 20a is arranged at least partially in a plane 22a which intersects the intermediate shaft 18a and which runs at least substantially perpendicular to the intermediate shaft 18a. The drive shaft 14a is at least partially supported within the intermediate shaft 18a.
- the intermediate shaft 18a has a receiving recess 24a which is provided to at least partially receive the drive shaft 14a. The receiving recess 24a extends at least substantially along an axis of rotation 108a of the intermediate shaft 18a.
- the drive shaft 14a protrudes at least partially into the intermediate shaft 18a, in particular into the receiving recess 24a of the intermediate shaft 18a.
- the bearing 20a for supporting the drive shaft 14a is arranged within the receiving recess 24a.
- the bearing 20a for supporting the drive shaft 14a is designed as a roller bearing.
- the intermediate shaft 18a also has a sealing element receptacle 30a.
- the sealing element receptacle 30a is arranged directly on an insertion opening 136a of the receiving recess 24a of the intermediate shaft 18a, which is provided to introduce the drive shaft 14a into the intermediate shaft 18a.
- the intermediate shaft 18a has at least one sealing element 32a arranged in the sealing element receptacle 30a.
- the sealing element 32a is designed as a shaft sealing ring, in particular as a radial shaft sealing ring, which in an assembled state is arranged between the drive shaft 14a and the intermediate shaft 18a.
- the sealing element receptacle 30a is designed as a shaft sealing ring receptacle.
- Another bearing 102a for mounting the drive shaft 14a is arranged on a side 104a of the electric motor 26a facing away from the tool holder 86a in the drive housing 72a.
- the handheld power tool device 10a has a cooling air unit 36a, which comprises at least one fan wheel 38a arranged between the drive unit 12a and the rotary hammer mechanism 16a.
- the fan wheel 38a is provided in particular to generate a cooling air flow for cooling the rotary hammer mechanism 16a and / or the drive unit 12a.
- the fan wheel 38a is rotationally fixed on the drive shaft 14a of the drive unit 12a.
- the drive unit 12a is provided to set the fan wheel 38a in a rotational movement during operation of the handheld power tool 34a.
- the fan wheel 38a and the rotary hammer mechanism 16a overlap at least partially in the axial direction 40a.
- the fan wheel 38a preferably projects at least partially beyond the rotary hammer mechanism 16a in the axial direction 40a.
- the fan wheel 38a has a plurality of fan wheel blades 110a which are arranged in the circumferential direction and which overlap at least part of the rotary hammer mechanism 16a in the circumferential direction.
- the fan impeller blades 110a extend at least substantially in the axial direction 40a.
- the rotary hammer mechanism 16a has at least one gear unit 42a designed as a single-stage planetary gear 50a.
- the bearing 20a for supporting the drive shaft 14a is arranged on a side of the planetary gear 50a facing away from the drive unit 12a.
- a toothing 144a between the drive shaft 14a and the planetary gear 50a is arranged between the bearing 20a and the bearing 102a.
- the gear unit 42a can be designed as a multi-stage planetary gear.
- the fan wheel 38a and at least the gear unit 42a preferably overlap at least partially in the axial direction 40a.
- the planetary gear 50a comprises at least one ring gear 46a.
- the rotary hammer mechanism 16a further comprises a hammer mechanism cover 44a.
- the hammer mechanism cover 44a is arranged between the drive unit 12a and the planetary gear 50a.
- the hammer mechanism cover 44a is provided to close the rotary hammer mechanism 16a in the direction of the drive unit 12a, at least to a large extent.
- the hammer mechanism cover 44a has a lead-through recess 106a, which is provided for at least partial lead-through of at least the drive shaft 14a.
- the striking mechanism cover 44a is formed in one piece with the ring gear 46a.
- the striking mechanism cover 44a and the ring gear 46a consist at least essentially of a metallic material, in particular of a metallic sintered material.
- the fan wheel 38a and at least the hammer mechanism cover 44a preferably overlap at least partially in the axial direction 40a.
- the handheld power tool device 10 also has an intermediate shaft bearing 48a for mounting the intermediate shaft 18a.
- the intermediate shaft bearing 48a is designed as a roller bearing. Alternatively, the intermediate shaft bearing 48a can be designed as a slide bearing.
- the intermediate shaft bearing 48a is designed as a radial bearing, which is provided to support the intermediate shaft 18a rotatably in the hammer mechanism cover 44a.
- the intermediate shaft bearing 48a is at least partially within a Arranged hammer mechanism cover 44a of rotary hammer mechanism 16a.
- the intermediate shaft bearing 48a is arranged directly on the feed-through recess 106a of the hammer mechanism cover 44a.
- the intermediate shaft bearing 48a is arranged on the side of the hammer mechanism cover 44a facing the tool holder 86a.
- the hammer mechanism cover 44a has at least one bearing seat 52a, which is provided to accommodate the intermediate shaft bearing 48a.
- the bearing receptacle 52a is formed in one piece with the hammer mechanism cover 44a.
- the bearing receptacle 52a is arranged in the area of the lead-through recess 106a of the hammer mechanism cover 44a.
- the bearing receptacle 52a is formed at least essentially as a hollow cylinder.
- the bearing receptacle 52a has an at least essentially annular stop element 112a for the intermediate shaft bearing 48a on an end facing away from the hammer mechanism cover 44a.
- the stop element 112a is formed in one piece with the bearing receptacle 52a.
- An inside diameter of the bearing seat 52a corresponds at least essentially to an outside diameter of the intermediate shaft bearing 48a.
- the intermediate shaft bearing 48a is preferably fixed in the bearing receptacle 52a by a press fit.
- the fan wheel 38a and at least the intermediate shaft bearing 48a and / or the intermediate shaft 18a preferably overlap at least partially in the axial direction 40a.
- Figure 3 shows the intermediate shaft 18a in a perspective view.
- Figure 4 shows the intermediate shaft 18a in a sectional view along the sectional plane III-III.
- the intermediate shaft 18a is designed as a planetary gear carrier 94a of the planetary gear 50a.
- the intermediate shaft 18a has a plurality of planetary gear receptacles 54a, 56a, 58a and planetary gear bearing points 60a, 62a, 64a arranged in the circumferential direction.
- planetary gear receptacle 54a, 56a, 58a there is a respective planetary gear 130a which is rotatably supported by means of a pin 132a.
- the intermediate shaft 18a has at least one material recess 66a, 68a, 70a on its outer circumference, at least in the region of at least one planetary gear bearing point 60a, 62a, 64a.
- a number of material recesses 66a, 68a, 70a corresponds to a number of planetary gear receptacles 54a, 56a, 58a.
- Each planet gear receptacle 54a, 56a, 58a is assigned exactly one material recess 66a, 68a, 70a.
- the intermediate shaft 18a has three planet gear receptacles 54a, 56a, 58a, each with a planet gear bearing point 60a, 62a, 64a.
- the planetary gear bearing points 60a, 62a, 64a are arranged at least substantially offset from one another by 120 ° in the circumferential direction on the intermediate shaft 18a.
- the planetary gear receptacles 54a, 56a, 58a are radially closed by themselves a longitudinal extension direction 122a of the intermediate shaft 18a extending webs 124a separated from one another.
- the planetary gear receptacles 54a, 56a, 58a are delimited by two disk-shaped wall elements 126a, 128a which are arranged at least substantially perpendicular to the direction of longitudinal extent 122a.
- the wall elements 126a, 128a are at least substantially circular.
- the wall elements 126a, 128a are formed in one piece with the intermediate shaft 18a.
- the material recesses 66a, 68a, 70a are formed at least essentially in the shape of a segment of a circle.
- the planetary gear receptacles 54a, 56a, 58a are designed at least essentially in the shape of a segment of a cylinder.
- the material recesses 66a, 68a, 70a are made in one of the wall elements 126a, 128a.
- the material cutouts 66a, 68a, 70a are made in the wall element 126a, which is arranged in the assembled state of the intermediate shaft 18a in the direction of a drive unit 12a.
- the wall elements 126a, 128a have an at least substantially identical radius. Alternatively, one of the wall elements 126a, 128a can have a smaller radius.
- the material recesses 66a, 68a, 70a are provided when the intermediate shaft 18a is manufactured to temporarily at least partially accommodate a milling head spindle 78a (cf. Figure 5 ).
- the planetary gear receptacles 54a, 56a, 58a are introduced into a blank of the intermediate shaft 18a by means of a side milling cutter 134a. While the planetary gear receptacles 54a, 56a, 58a are being introduced, a milling head spindle 78a of the disk milling cutter 134a is at least partially inserted into a material recess 66a, 68a, 70a.
- the planetary gear receptacles 54a, 56a, 58a are preferably introduced into the intermediate shaft 18a in a common method step, at least essentially at the same time, in particular by means of a plurality of identical disk milling cutters 134a.
- the disk milling cutters 134a are brought up to the intermediate shaft 18a in such a way that the milling head spindles 78a at any point in time run at least substantially parallel to a direction of longitudinal extent 122a of the intermediate shaft 18a.
- Figure 6 shows the handheld power tool 34a in a front view.
- Figure 7 shows a sectional illustration of the handheld power tool 34a along the section line VI-VI.
- the ring gear 46a of the planetary gear 50a is clamped between the drive housing 72a and the hammer mechanism housing 74a.
- the ring gear 46a is axially between the drive housing 72a and the hammer mechanism housing 74a clamped.
- the ring gear 46a can be clamped radially between the drive housing 72a and the hammer mechanism housing 74a.
- the drive housing 72a and the hammer mechanism housing 74a have a clamping surface 114a which, in an assembled state, bear against at least one surface 116a of the ring gear 46a from opposite sides and which each exert a clamping force on the ring gear 46a.
- the ring gear 46a is fixed to the drive housing 72a by means of at least one screw element 76a, preferably by means of at least one screw.
- the ring gear 46a is fixed by way of example with four screw elements 76a.
- the ring gear 46a has recesses 118a on an outer circumference, which are provided for the screw elements 76a to be passed through.
- the drive housing 72a has a number of thread recesses 120a corresponding to the number of screw elements 76a, which have a thread corresponding to a thread of the screw elements 76a.
- the drive housing 72a, the hammer mechanism housing 74a and the ring gear 46a are connected to one another in an assembled state by means of the screw elements 76a, the ring gear 46a being arranged between the drive housing 72a and the hammer mechanism housing 74a.
- the ring gear 46a can be fixed to the hammer mechanism housing 74a by means of at least one screw element 76a.
- FIG 8 shows an alternative embodiment of the handheld power tool device 10b in a sectional illustration.
- the handheld power tool device 10b has a drive unit 12b and a rotary hammer mechanism 16b with a planetary gear 50b.
- the drive unit 12b has an electric motor 26b without a housing, which is provided to convert electrical energy into rotational energy.
- the electric motor 26b is designed as an open-frame motor.
- the drive unit 12b has a drive shaft 14b which is provided to transmit the rotational energy to the rotary hammer mechanism 16b.
- the drive shaft 14b is partially formed by an armature shaft 28b of the housing-less electric motor 26b.
- the rotary hammer mechanism 16b has an intermediate shaft 18b which is at least substantially aligned with the drive shaft 14b. Furthermore, the handheld power tool device 10b has at least one bearing 20b for mounting the drive shaft 14b.
- the drive shaft 14b is at least partially supported within the intermediate shaft 18b.
- the intermediate shaft 18b has a receiving recess 24b which is provided for at least partially receiving the drive shaft 14b.
- the bearing 20b is arranged directly on an insertion opening 136b of the receiving recess 24b of the intermediate shaft 18b, which is provided to insert the drive shaft 14b into the intermediate shaft 18b.
- the bearing 20b for supporting the drive shaft 14b is arranged on a side of the planetary gear 50b facing the drive unit 12b.
- the bearing 20b is designed as a roller bearing.
- FIG 9 shows a further alternative embodiment of the handheld power tool device 10c in a sectional illustration.
- the handheld power tool device 10c has a drive unit 12c and a rotary hammer mechanism 16c with a planetary gear 50c.
- the drive unit 12c has an electric motor 26c without a housing, which is provided to convert electrical energy into rotational energy.
- the electric motor 26c is designed as an open-frame motor.
- the drive unit 12c has a drive shaft 14b which is provided to transmit the rotational energy to the rotary hammer mechanism 16c.
- the drive shaft 14c is partially formed by an armature shaft 28c of the housing-less electric motor 26c.
- the rotary hammer mechanism 16c has an intermediate shaft 18c which is at least essentially aligned with the drive shaft 14c. Furthermore, the handheld power tool device 10c has at least one bearing 20c for mounting the drive shaft 14c. The drive shaft 14c is at least partially supported within the intermediate shaft 18c. The intermediate shaft 18c has a receiving recess 24c which is provided to at least partially receive the drive shaft 14c. The bearing 20c is arranged directly on an insertion opening 136c of the receiving recess 24c of the intermediate shaft 18c, which is provided to insert the drive shaft 14c into the intermediate shaft 18c. The warehouse 20c for storage the drive shaft 14c is arranged on a side of the planetary gear 50c facing the drive unit 12c.
- the bearing 20c is designed as a ball bearing bearing. Furthermore, the hand-held power tool device 10c has a sealing ring 140c which surrounds the bearing 20c in the circumferential direction and which is arranged between the bearing 20c and an inner diameter receiving recess 24c of the intermediate shaft 18c.
- the intermediate shaft 18c has a groove 142c which is provided for receiving the sealing ring 140c.
Description
Es ist bereits eine Handwerkzeugmaschinenvorrichtung mit zumindest einem Antriebsgehäuse, mit zumindest einem Schlagwerksgehäuse und mit zumindest einem Drehschlagwerk, welches zumindest ein Planetengetriebe mit zumindest einem Hohlrad aufweist, vorgeschlagen worden. So ist ein entsprechendes Werkzeug gemäß der Präambel des Anspruchs 1 aus
Die Erfindung geht aus von einer Handwerkzeugmaschinenvorrichtung mit zumindest einem Antriebsgehäuse, mit zumindest einem Schlagwerksgehäuse und mit zumindest einem Drehschlagwerk, welches zumindest ein Planetengetriebe mit zumindest einem Hohlrad aufweist.The invention is based on a hand-held power tool device with at least one drive housing, with at least one hammer mechanism housing and with at least one rotary hammer mechanism, which has at least one planetary gear with at least one ring gear.
Es wird vorgeschlagen, dass das Hohlrad zwischen das Antriebsgehäuse und das Schlagwerksgehäuse geklemmt ist.It is proposed that the ring gear be clamped between the drive housing and the hammer mechanism housing.
Unter einer "Handwerkzeugmaschinenvorrichtung" soll in diesem Zusammenhang insbesondere zumindest ein Teil, insbesondere eine Unterbaugruppe, einer Handwerkzeugmaschine verstanden werden. Insbesondere kann die Handwerkzeugmaschinenvorrichtung auch die gesamte Handwerkzeugmaschine umfassen. Die Handwerkzeugmaschine kann dabei als beliebige, vorteilhaft elektrische Maschine ausgebildet sein, vorteilhaft jedoch als Drehschlagschrauber. Unter einem "Antriebsgehäuse" soll in diesem Zusammenhang insbesondere eine Einheit verstanden werden, welche dazu vorgesehen ist, eine Antriebseinheit der Handwerkzeugmaschine insbesondere vollständig aufzunehmen. Unter "vorgesehen" soll insbesondere speziell programmiert, ausgelegt und/oder ausgestattet verstanden werden. Darunter, dass ein Objekt zu einer bestimmten Funktion vorgesehen ist, soll insbesondere verstanden werden, dass das Objekt diese bestimmte Funktion in zumindest einem Anwendungs- und/oder Betriebszustand erfüllt und/oder ausführt. Unter einer "Antriebseinheit" soll insbesondere eine Einheit verstanden werden, die dazu vorgesehen ist, insbesondere elektrische Energie in kinetische Energie, insbesondere Rotationsenergie, umzuwandeln. Die Antriebseinheit weist insbesondere zumindest einen Elektromotor auf. Der Elektromotor ist insbesondere als ein gehäuseloser Elektromotor ausgebildet. Eine Antriebswelle der Antriebseinheit ist insbesondere zumindest teilweise von einer Ankerwelle des gehäuselosen Elektromotors gebildet. Unter einem "Schlagwerksgehäuse" soll in diesem Zusammenhang insbesondere eine Einheit verstanden werden, welche dazu vorgesehen ist, ein Schlagwerk, insbesondere ein Drehschlagwerk, der Handwerkzeugmaschine insbesondere vollständig aufzunehmen. Unter einem "Drehschlagwerk" soll in diesem Zusammenhang insbesondere ein Schlagwerk verstanden werden, welches dazu vorgesehen ist, eine zumindest im Wesentlichen kontinuierliche Leistungsabgabe einer Antriebseinheit in einen schlagförmigen Drehimpuls umzuwandeln. Das Drehschlagwerk kann insbesondere als ein Nockendrehschlagwerk oder als ein V-Nutendrehschlagwerk ausgebildet sein.In this context, a “handheld power tool device” should be understood to mean in particular at least a part, in particular a subassembly, of a handheld power tool. In particular, the handheld power tool device can also include the entire handheld power tool. The handheld power tool can be designed as any, advantageously electrical machine, but advantageously as a rotary impact wrench. In this context, a “drive housing” should be understood to mean, in particular, a unit which is provided to accommodate a drive unit of the handheld power tool, in particular completely. “Provided” is to be understood in particular as specifically programmed, designed and / or equipped. Including that an object becomes a If a specific function is provided, it should be understood in particular that the object fulfills and / or executes this specific function in at least one application and / or operating state. A “drive unit” is to be understood as meaning, in particular, a unit which is provided to convert, in particular, electrical energy into kinetic energy, in particular rotational energy. The drive unit has in particular at least one electric motor. The electric motor is designed in particular as an electric motor without a housing. A drive shaft of the drive unit is in particular formed at least partially by an armature shaft of the housing-less electric motor. In this context, a “percussion mechanism housing” is to be understood in particular as a unit which is provided to accommodate a percussion mechanism, in particular a rotary percussion mechanism, of the handheld power tool, in particular completely. In this context, a “rotary percussion mechanism” is to be understood as meaning, in particular, a percussion mechanism which is provided to convert an at least substantially continuous power output of a drive unit into a sudden angular momentum. The rotary hammer mechanism can in particular be designed as a cam rotary hammer mechanism or as a V-groove rotary hammer mechanism.
Unter einem "Planetengetriebe" soll insbesondere ein Getriebe verstanden werden, welches wenigstens einen mit einem Planetenträger verbundenen Planeten aufweist, der in radiale Richtung nach außen mit einem Hohlrad und/oder in radialer Richtung nach innen mit einem Sonnenrad gekoppelt ist. Das Sonnenrad, der Planet und/oder das Hohlrad können insbesondere von runden Zahnrädern oder von aufeinander abgestimmten unrunden Zahnrädern gebildet sein. Es können mehrere Planetengetriebe hintereinander geschaltet sein und/oder es können zwischen Planetenrad und Hohlrad mehrere Stufen zwischengeschaltet sein. Unter einem "Hohlrad" soll insbesondere ein Getrieberad verstanden werden, das einen Kranz aufweist, der in Form eines Zylindermantels oder in Form eines unterbrochenen Zylindermantels ausgebildet ist. Darunter, dass das Hohlrad zwischen das Antriebsgehäuse und das Schlagwerksgehäuse "geklemmt" ist, soll insbesondere verstanden werden, dass das Antriebsgehäuse und das Schlagwerksgehäuse jeweils zumindest eine Klemmfläche aufweisen, welche in einem montierten Zustand jeweils von gegenüberliegenden Seiten an zumindest einer Fläche des Hohlrads anliegen und welche jeweils eine Klemmkraft auf das Hohlrad ausüben. Vorzugsweise ist das Hohlrad radial und/oder axial zwischen das Antriebsgehäuse und das Schlagwerksgehäuse geklemmt sein.A “planetary gear” is to be understood as meaning, in particular, a gear which has at least one planet connected to a planet carrier, which is coupled in the radial direction outward with a ring gear and / or in the radial direction inward with a sun gear. The sun gear, the planet and / or the ring gear can in particular be formed by round gearwheels or by non-circular gearwheels that are matched to one another. Several planetary gears can be connected in series and / or several stages can be interposed between the planetary gear and the ring gear. A “ring gear” is to be understood as meaning, in particular, a gear wheel that has a rim that is designed in the form of a cylinder jacket or in the form of an interrupted cylinder jacket. The fact that the ring gear is "clamped" between the drive housing and the striking mechanism housing is to be understood in particular as meaning that the drive housing and the striking mechanism housing each have at least one clamping surface which, in an assembled state, rest against at least one surface of the ring gear from opposite sides and each of which exert a clamping force on the ring gear. The ring gear is preferably clamped radially and / or axially between the drive housing and the hammer mechanism housing.
Durch eine derartige Ausgestaltung kann eine gattungsgemäße Handwerkzeugmaschinenvorrichtung mit vorteilhaften konstruktiven Eigenschaften bereitgestellt werden. Insbesondere kann durch die Anordnung des Hohlrads zwischen dem Antriebsgehäuse und dem Schlagwerksgehäuse eine vorteilhaft kompakte Bauform, insbesondere eine vorteilhaft geringe Baulänge, der Handwerkzeugmaschinenvorrichtung und/oder eine vorteilhaft kurze Toleranzkette erreicht werden.Such a configuration makes it possible to provide a hand-held power tool device of the generic type with advantageous structural properties. In particular, by arranging the ring gear between the drive housing and the striking mechanism housing, an advantageously compact design, in particular an advantageously short length, of the handheld power tool device and / or an advantageously short tolerance chain can be achieved.
Ferner wird vorgeschlagen, dass das Hohlrad mittels zumindest eines Schraubelements an dem Antriebsgehäuse und an dem Schlagwerksgehäuse fixiert ist. Unter einem "Schraubelement" soll insbesondere eine Schraube oder eine Schraubenmutter verstanden werden. Vorzugsweise ist das Hohlrad mittels einer Mehrzahl von Schraubelementen an dem Antriebsgehäuse und/oder an dem Schlagwerksgehäuse fixiert. Das Hohlrad weist an einem Außenumfang zumindest eine Ausnehmung auf, welche zu einem Hindurchführen des Schraubelements vorgesehen ist. Das Antriebsgehäuse und/oder das Schlagwerksgehäuse weisen zumindest eine Gewindeausnehmung auf, welche ein zu einem Gewinde des Schraubelements korrespondierendes Gewinde aufweist. Insbesondere sind in einem montierten Zustand das Antriebsgehäuse, das Schlagwerksgehäuse und das Hohlrad mittels des Schraubelements miteinander verbunden, wobei das Hohlrad zwischen dem Antriebsgehäuse und an dem Schlagwerksgehäuse angeordnet ist. Hierdurch kann eine vorteilhaft sichere Fixierung des Hohlrads erreicht werden.It is also proposed that the ring gear is fixed to the drive housing and to the hammer mechanism housing by means of at least one screw element. A “screw element” is to be understood as meaning, in particular, a screw or a screw nut. The ring gear is preferably fixed to the drive housing and / or to the hammer mechanism housing by means of a plurality of screw elements. On an outer circumference, the ring gear has at least one recess which is provided for the screw element to be passed through. The drive housing and / or the hammer mechanism housing have at least one thread recess which has a thread corresponding to a thread of the screw element. In particular, in an assembled state, the drive housing, the striking mechanism housing and the ring gear are connected to one another by means of the screw element, the ring gear being arranged between the drive housing and on the striking mechanism housing. In this way, an advantageously secure fixing of the ring gear can be achieved.
Des Weiteren wird vorgeschlagen, dass die Handwerkzeugmaschinenvorrichtung einen Schlagwerkdeckel aufweist, welcher einstückig mit dem Hohlrad ausgebildet ist. Unter einem "Schlagwerkdeckel" soll in diesem Zusammenhang insbesondere ein Deckelelement verstanden werden, welches dazu vorgesehen ist, das Drehschlagwerk in Richtung zumindest einer weiteren Handwerkzeugmaschineneinheit, insbesondere in Richtung einer Antriebseinheit, zumindest zu einem Großteil zu verschließen. Unter "zumindest zu einem Großteil" soll in diesem Zusammenhang insbesondere zumindest zu 51 %, vorzugsweise zumindest zu 65 % und besonders bevorzugt zumindest zu 75 % verstanden werden. Insbesondere weist der Schlagwerkdeckel zumindest eine Durchführungsausnehmung auf, welche zu einer zumindest teilweisen Durchführung zumindest einer Welle, insbesondere einer Antriebswelle, vorgesehen ist. Unter "einstückig" soll insbesondere zumindest stoffschlüssig verbunden verstanden werden, beispielsweise durch einen Schweißprozess, einen Klebeprozess, einen Anspritzprozess und/oder einen anderen, dem Fachmann als sinnvoll erscheinenden Prozess, und/oder vorteilhaft in einem Stück geformt verstanden werden, wie beispielsweise durch eine Herstellung aus einem Guss und/oder durch eine Herstellung in einem Ein- oder Mehrkomponentenspritzverfahren und vorteilhaft aus einem einzelnen Rohling. Insbesondere sind der Schlagwerkdeckel und das Hohlrad zumindest im Wesentlichen von einem metallischen Material, vorzugsweise von einem metallischen Sintermaterial, gebildet. Hierdurch kann eine vorteilhaft kompakte Bauform, insbesondere eine vorteilhaft geringe Baulänge, der Handwerkzeugmaschinenvorrichtung und/oder eine vorteilhaft kurze Toleranzkette erreicht werden.It is also proposed that the hand-held power tool device have an impact mechanism cover which is formed in one piece with the ring gear. A "hammer mechanism cover" is to be understood in this context in particular as a cover element which is provided to close the rotary hammer mechanism at least to a large extent in the direction of at least one further handheld power tool unit, in particular in the direction of a drive unit. In this context, “at least a large part” should be understood to mean in particular at least 51%, preferably at least 65% and particularly preferably at least 75%. In particular, the hammer mechanism cover has at least one passage recess which is provided for at least partial passage of at least one shaft, in particular a drive shaft. "In one piece" is to be understood in particular to be at least cohesively connected, for example by a welding process, an adhesive process, an injection molding process and / or another process that appears sensible to a person skilled in the art, and / or be understood to be advantageously formed in one piece, such as, for example, by production from a cast and / or by production in a one-component or multi-component injection molding process and advantageously from a single blank. In particular, the hammer mechanism cover and the ring gear are formed at least essentially from a metallic material, preferably from a metallic sintered material. In this way, an advantageously compact design, in particular an advantageously short overall length, of the hand-held power tool device and / or an advantageously short tolerance chain can be achieved.
Ferner wird vorgeschlagen, dass die Handwerkzeugmaschinenvorrichtung zumindest eine Zwischenwelle aufweist, welche zumindest teilweise innerhalb des Schlagwerkdeckels gelagert ist. Unter einer "Zwischenwelle" soll insbesondere eine Welle eines Antriebsstrangs verstanden werden, welche insbesondere zwischen einer Antriebseinheit und einer Abtriebswelle, insbesondere einer Handwerkzeugmaschine, angeordnet ist. Insbesondere ist die zumindest eine Zwischenwelle dazu vorgesehen, insbesondere eine von der Antriebseinheit erzeugte Kraft und/oder Bewegung direkt und/oder indirekt auf die Abtriebswelle zu übertragen. Insbesondere ist die Zwischenwelle zumindest teilweise als ein Planetenradträger des Planetengetriebes ausgebildet. Darunter, dass die Zwischenwelle zumindest teilweise innerhalb des Schlagwerkdeckels gelagert ist, soll insbesondere verstanden werden, dass ein einer Abtriebswelle des Drehschlagwerks abgewandtes Ende der Zwischenwelle drehbar innerhalb des Schlagwerkdeckels gelagert ist. Unter "drehbar gelagert" soll in diesem Zusammenhang insbesondere verstanden werden, dass die Zwischenwelle dazu vorgesehen ist, relativ zu dem Schlagwerkdeckel zumindest in einem Betriebszustand eine Rotationsbewegung durchzuführen. Durch die Lagerung der Zwischenwelle innerhalb des Schlagwerkdeckels kann eine vorteilhaft kompakte Bauform, insbesondere eine vorteilhaft geringe Baulänge, des Drehschlagwerks erreicht werden.It is also proposed that the hand-held power tool device have at least one intermediate shaft which is at least partially supported within the hammer mechanism cover. An “intermediate shaft” is to be understood in particular as a shaft of a drive train which is arranged in particular between a drive unit and an output shaft, in particular a handheld power tool. In particular, the at least one intermediate shaft is provided to transmit, in particular, a force and / or movement generated by the drive unit directly and / or indirectly to the output shaft. In particular, the intermediate shaft is at least partially designed as a planet carrier of the planetary gear. The fact that the intermediate shaft is at least partially supported within the hammer mechanism cover should be understood in particular to mean that an end of the intermediate shaft facing away from an output shaft of the rotary hammer mechanism is rotatably supported within the hammer mechanism cover. In this context, “rotatably mounted” is to be understood in particular to mean that the intermediate shaft is provided to perform a rotational movement relative to the hammer mechanism cover, at least in one operating state. By mounting the intermediate shaft within the hammer mechanism cover, an advantageously compact design, in particular an advantageously short overall length, of the rotary hammer mechanism can be achieved.
Des Weiteren wird vorgeschlagen, dass die Handwerkzeugmaschinenvorrichtung zumindest ein Zwischenwellenlager zur Lagerung der Zwischenwelle aufweist, welches zumindest teilweise innerhalb des Schlagwerkdeckels angeordnet ist. Unter einem "Zwischenwellenlager" soll in diesem Zusammenhang insbesondere ein Radiallager verstanden werden, welches dazu vorgesehen ist, die Zwischenwelle drehbar zu lagern. Insbesondere ist das Zwischenwellenlager unmittelbar an einer Durchführungsausnehmung des Schlagwerkdeckels angeordnet. Das Zwischenwellenlager ist insbesondere auf einer einer Abtriebswelle des Drehschlagwerks zugewandten Seite des Schlagwerkdeckels angeordnet. Das Zwischenwellenlager kann insbesondere als Gleitlager oder Wälzlager ausgebildet sein. Vorzugsweise ist das Zwischenwellenlager als ein Wälzlager, beispielsweise als ein Kugellager, Rollenlager oder Nadellager, ausgebildet. Hierdurch kann eine vorteilhaft reibungsarme Lagerung der Zwischenwelle erreicht werden. Ferner kann durch die Anordnung des Zwischenwellenlagers innerhalb des Schlagwerkdeckels eine vorteilhaft geringe Baulänge des Drehschlagwerks erreicht werden.It is further proposed that the hand-held power tool device have at least one intermediate shaft bearing for mounting the intermediate shaft, which is at least partially arranged within the hammer mechanism cover. In this context, an “intermediate shaft bearing” is to be understood in particular as a radial bearing which is provided to support the intermediate shaft in a rotatable manner. In particular, the intermediate shaft bearing is arranged directly on a feed-through recess in the hammer mechanism cover. The intermediate shaft bearing is in particular on a side of the rotary hammer mechanism facing an output shaft Striking mechanism cover arranged. The intermediate shaft bearing can in particular be designed as a slide bearing or roller bearing. The intermediate shaft bearing is preferably designed as a roller bearing, for example as a ball bearing, roller bearing or needle bearing. In this way, an advantageously low-friction mounting of the intermediate shaft can be achieved. Furthermore, by arranging the intermediate shaft bearing within the hammer mechanism cover, an advantageously short overall length of the rotary hammer mechanism can be achieved.
Ferner wird vorgeschlagen, dass der Schlagwerkdeckel zumindest eine Lageraufnahme aufweist, welche zu einer Aufnahme des Zwischenwellenlagers vorgesehen ist. Unter einer "Lageraufnahme" soll in diesem Zusammenhang insbesondere ein zumindest teilweise von dem Schlagwerkdeckel ausgebildeter Bereich verstanden werden, welcher zu einer ortsfesten Anordnung des Zwischenwellenlagers innerhalb des Schlagwerkdeckels vorgesehen ist. Die Lageraufnahme ist insbesondere einstückig mit dem Schlagwerkdeckel ausgebildet. Insbesondere ist die Lageraufnahme im Bereich einer Durchführungsausnehmung des Schlagwerkdeckels angeordnet. Die Lageraufnahme ist insbesondere zumindest teilweise hohlzylindrisch ausgebildet. Insbesondere weist die Lageraufnahme an einem dem Schlagwerkdeckel abgewandten Ende ein zumindest im Wesentlichen ringförmiges Anschlagelement für das Zwischenwellenlager auf. Das Anschlagelement ist insbesondere einstückig mit der Lageraufnahme ausgebildet. Insbesondere entspricht ein Innendurchmesser der Lageraufnahme zumindest im Wesentlichen einem Außendurchmesser des Zwischenwellenlagers. Vorzugsweise ist das Zwischenwellenlager durch einen Presssitz in der Lageraufnahme fixiert. Unter einem "Presssitz" soll insbesondere eine kraftschlüssige Verbindung verstanden werden, welche als Quer- und/oder Längspressverband ausgeführt sein kann. Unter einer "kraftschlüssigen Verbindung" soll dabei insbesondere eine lösbare Verbindung verstanden werden, wobei eine Haltekraft zwischen zwei Bauteilen vorzugsweise durch eine Reibkraft zwischen den Bauteilen übertragen wird. Hierdurch kann eine vorteilhaft einfache, sichere und/oder dauerhafte Anordnung des Zwischenwellenlagers innerhalb des Schlagwerkdeckels erreicht werden.It is also proposed that the hammer mechanism cover have at least one bearing receptacle, which is provided for receiving the intermediate shaft bearing. In this context, a “bearing receptacle” is to be understood in particular as an area formed at least partially by the hammer mechanism cover, which is provided for a stationary arrangement of the intermediate shaft bearing within the hammer mechanism cover. The bearing receptacle is in particular formed in one piece with the hammer mechanism cover. In particular, the bearing receptacle is arranged in the area of a feed-through recess in the hammer mechanism cover. The bearing receptacle is designed in particular at least partially as a hollow cylinder. In particular, the bearing receptacle has an at least essentially annular stop element for the intermediate shaft bearing at an end facing away from the hammer mechanism cover. The stop element is in particular formed in one piece with the bearing receptacle. In particular, an inner diameter of the bearing seat corresponds at least essentially to an outer diameter of the intermediate shaft bearing. The intermediate shaft bearing is preferably fixed in the bearing receptacle by a press fit. A “press fit” is to be understood in particular as a non-positive connection which can be designed as a transverse and / or longitudinal press fit. A “non-positive connection” is to be understood in particular as a releasable connection, with a holding force between two components being transmitted, preferably by a frictional force between the components. In this way, an advantageously simple, secure and / or permanent arrangement of the intermediate shaft bearing within the hammer mechanism cover can be achieved.
Zudem wird eine Handwerkzeugmaschine, insbesondere ein Drehschlagschrauber, mit zumindest einer erfindungsgemäßen Handwerkzeugmaschinenvorrichtung vorgeschlagen. Hierdurch kann eine vorteilhaft kompakte Handwerkzeugmaschine, insbesondere ein vorteilhaft kompakter Drehschlagschrauber, bereitgestellt werden. Insbesondere kann die Handwerkzeugmaschine eine vorteilhaft geringe Baulänge aufweisen.In addition, a handheld power tool, in particular an impact wrench, with at least one handheld power tool device according to the invention is proposed. In this way, an advantageously compact handheld power tool, in particular an advantageously compact impact wrench, can be provided. In particular, the handheld power tool can have an advantageously short overall length.
Die erfindungsgemäße Handwerkzeugmaschinenvorrichtung soll hierbei nicht auf die oben beschriebene Anwendung und Ausführungsform beschränkt sein. Insbesondere kann die erfindungsgemäße Handwerkzeugmaschinenvorrichtung zu einer Erfüllung einer hierin beschriebenen Funktionsweise eine von einer hierin genannten Anzahl von einzelnen Elementen, Bauteilen und Einheiten abweichende Anzahl aufweisen.The handheld power tool device according to the invention is not intended to be restricted to the application and embodiment described above. In particular, the hand-held power tool device according to the invention can have a number of individual elements, components and units that differs from a number of individual elements, components and units mentioned herein in order to fulfill a mode of operation described herein.
Weitere Vorteile ergeben sich aus der folgenden Zeichnungsbeschreibung. In der Zeichnung sind drei Ausführungsbeispiele der Erfindung dargestellt. Die Zeichnung, die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination. Der Fachmann wird die Merkmale zweckmäßigerweise auch einzeln betrachten und zu sinnvollen weiteren Kombinationen zusammenfassen.Further advantages emerge from the following description of the drawings. Three exemplary embodiments of the invention are shown in the drawing. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.
Es zeigen:
- Fig. 1
- eine schematischen Teilschnittdarstellung einer Handwerkzeugmaschine welche als ein Drehschlagschrauber ausgebildet ist,
- Fig. 2
- eine Schnittdarstellung einer Handwerkzeugmaschinenvorrichtung der Handwerkzeugmaschine mit einer Antriebseinheit und einem Drehschlagwerk,
- Fig. 3
- eine Zwischenwelle der Handwerkzeugmaschinenvorrichtung aus
Figur 2 in einer perspektivischen Darstellung, - Fig. 4
- eine Schnittdarstellung der Zwischenwelle aus
Figur 3 , - Fig. 5
- eine schematische Darstellung eines Einbringens von Planetenradaufnahmen in die Zwischenwelle,
- Fig. 6
- die Handwerkzeugmaschine in einer Frontalansicht,
- Fig. 7
- eine Schnittdarstellung der Handwerkzeugmaschine,
- Fig. 8
- eine Schnittdarstellung einer alternativen Handwerkzeugmaschinenvorrichtung und
- Fig. 9
- eine Schnittdarstellung einer weiteren alternativen Handwerkzeugmaschinenvorrichtung.
- Fig. 1
- a schematic partial sectional view of a handheld power tool which is designed as an impact wrench,
- Fig. 2
- a sectional view of a handheld power tool device of the handheld power tool with a drive unit and a rotary hammer mechanism,
- Fig. 3
- an intermediate shaft of the handheld power tool device
Figure 2 in a perspective view, - Fig. 4
- a sectional view of the intermediate shaft
Figure 3 , - Fig. 5
- a schematic representation of the introduction of planetary gear receptacles into the intermediate shaft,
- Fig. 6
- the hand machine tool in a front view,
- Fig. 7
- a sectional view of the handheld power tool,
- Fig. 8
- a sectional view of an alternative handheld power tool device and
- Fig. 9
- a sectional view of a further alternative handheld power tool device.
Ferner weist die Handwerkzeugmaschine 34a eine Handwerkzeugmaschinenvorrichtung 10a mit einer Antriebseinheit 12a und einem Drehschlagwerk 16a auf.
Das Drehschlagwerk 16a weist eine Zwischenwelle 18a auf, welche zumindest im Wesentlichen fluchtend zu der Antriebswelle 14a ausgerichtet ist. Des Weiteren weist die Handwerkzeugmaschinenvorrichtung 10a zumindest ein Lager 20a zur Lagerung der Antriebswelle 14a auf. Das Lager 20a ist zumindest teilweise in einer die Zwischenwelle 18a schneidenden Ebene 22a angeordnet, welche zumindest im Wesentlichen senkrecht zur Zwischenwelle 18a verläuft. Die Antriebswelle 14a ist zumindest teilweise innerhalb der Zwischenwelle 18a gelagert. Die Zwischenwelle 18a weist eine Aufnahmeausnehmung 24a auf, welche zu einer zumindest teilweisen Aufnahme der Antriebswelle 14a vorgesehen ist. Die Aufnahmeausnehmung 24a erstreckt sich zumindest im Wesentlichen entlang einer Rotationsachse 108a der Zwischenwelle 18a. Die Antriebswelle 14a ragt in einem montierten Zustand zumindest teilweise in die Zwischenwelle 18a, insbesondere in die Aufnahmeausnehmung 24a der Zwischenwelle 18a, hinein. Das Lager 20a zur Lagerung der Antriebswelle 14a ist innerhalb der Aufnahmeausnehmung 24a angeordnet. Das Lager 20a zur Lagerung der Antriebswelle 14a ist als ein Wälzlager ausgebildet. Die Zwischenwelle 18a weist ferner eine Dichtelementaufnahme 30a auf. Die Dichtelementaufnahme 30a ist unmittelbar an einer Einführöffnung 136a der Aufnahmeausnehmung 24a der Zwischenwelle 18a angeordnet, welche dazu vorgesehen ist, die Antriebswelle 14a in die Zwischenwelle 18a einzuführen. Zudem weist die Zwischenwelle 18a zumindest ein in der Dichtelementaufnahme 30a angeordnetes Dichtelement 32a auf. Das Dichtelement 32a ist als ein Wellendichtring, insbesondere als ein Radial-Wellendichtring ausgebildet, welcher in einem montierten Zustand zwischen der Antriebswelle 14a und der Zwischenwelle 18a angeordnet ist. Die Dichtelementaufnahme 30a ist als eine Wellendichtringaufnahme ausgebildet. Ein weiteres Lager 102a zur Lagerung der Antriebswelle 14a ist an einer der Werkzeugaufnahme 86a abgewandten Seite 104a des Elektromotors 26a im Antriebsgehäuse 72a angeordnet.The
Zudem weist die Handwerkzeugmaschinenvorrichtung 10a eine Kühllufteinheit 36a auf, welche zumindest ein zwischen der Antriebseinheit 12a und dem Drehschlagwerk 16a angeordnetes Lüfterrad 38a umfasst. Das Lüfterrad 38a ist insbesondere zur Erzeugung eines Kühlluftstroms zu einer Kühlung des Drehschlagwerks 16a und/oder der Antriebseinheit 12a vorgesehen. Das Lüfterrad 38a ist drehfest auf der Antriebswelle 14a der Antriebseinheit 12a angeordnet. Die Antriebseinheit 12a ist dazu vorgesehen, das Lüfterrad 38a während eines Betriebs der Handwerkzeugmaschine 34a in eine Rotationsbewegung zu versetzen. Das Lüfterrad 38a und das Drehschlagwerk 16a überlappen sich zumindest teilweise in axialer Richtung 40a. Vorzugsweise überragt das Lüfterrad 38a das Drehschlagwerk 16a in axialer Richtung 40a zumindest teilweise. Das Lüfterrad 38a weist eine Mehrzahl von in Umfangsrichtung angeordneter Lüfterradflügel 110a auf, welche zumindest einen Teil des Drehschlagwerks 16a in Umfangsrichtung übergreifen. Die Lüfterradflügel 110a erstecken sich zumindest im Wesentlichen in axialer Richtung 40a. Das Drehschlagwerk 16a weist zumindest eine als ein einstufiges Planetengetriebe 50a ausgebildete Getriebeeinheit 42a auf. Das Lager 20a zur Lagerung der Antriebswelle 14a ist auf einer der Antriebseinheit 12a abgewandten Seite des Planetengetriebes 50a angeordnet. Eine Verzahnung 144a zwischen der Antriebswelle 14a und dem Planetengetriebe 50a ist zwischen dem Lager 20a und dem Lager 102a angeordnet. Alternativ kann die Getriebeeinheit 42a als ein mehrstufiges Planetengetriebe ausgebildet sein. Vorzugsweise überlappen sich das Lüfterrad 38a und zumindest die Getriebeeinheit 42a zumindest teilweise in axialer Richtung 40a. Das Planetengetriebe 50a umfasst zumindest ein Hohlrad 46a. Ferner umfasst das Drehschlagwerk 16a einen Schlagwerkdeckel 44a. Der Schlagwerkdeckel 44a ist zwischen der Antriebseinheit 12a und dem Planetengetriebe 50a angeordnet. Insbesondere ist der Schlagwerkdeckel 44a dazu vorgesehen, das Drehschlagwerk 16a in Richtung der Antriebseinheit 12a, zumindest zu einem Großteil zu verschließen. Der Schlagwerkdeckel 44a weist eine Durchführungsausnehmung 106a auf, welche zu einer zumindest teilweisen Durchführung zumindest der Antriebswelle 14a vorgesehen ist. Der Schlagwerkdeckel 44a ist einstückig mit dem Hohlrad 46a ausgebildet. Der Schlagwerkdeckel 44a und das Hohlrad 46a bestehen zumindest im Wesentlichen aus einem metallischen Material, insbesondere aus einem metallischen Sintermaterial. Vorzugsweise überlappen sich das Lüfterrad 38a und zumindest der Schlagwerkdeckel 44a zumindest teilweise in axialer Richtung 40a.In addition, the handheld
Die Handwerkzeugmaschinenvorrichtung 10 weist ferner ein Zwischenwellenlager 48a zur Lagerung der Zwischenwelle 18a auf. Das Zwischenwellenlager 48a ist als ein Wälzlager ausgebildet. Alternativ kann das Zwischenwellenlager 48a als ein Gleitlager ausgebildet sein. Das Zwischenwellenlager 48a ist als ein Radiallager ausgebildet, welches dazu vorgesehen die Zwischenwelle 18a drehbar in dem Schlagwerkdeckel 44a zu lagern. Das Zwischenwellenlager 48a ist zumindest teilweise innerhalb eines Schlagwerkdeckels 44a des Drehschlagwerks 16a angeordnet. Das Zwischenwellenlager 48a ist unmittelbar an der Durchführungsausnehmung 106a des Schlagwerkdeckels 44a angeordnet. Das Zwischenwellenlager 48a ist auf der Werkzeugaufnahme 86a zugewandten Seite des Schlagwerkdeckels 44a angeordnet. Der Schlagwerkdeckel 44a weist zumindest eine Lageraufnahme 52a auf, welche zu einer Aufnahme des Zwischenwellenlagers 48a vorgesehen ist. Die Lageraufnahme 52a ist einstückig mit dem Schlagwerkdeckel 44a ausgebildet. Die Lageraufnahme 52a ist im Bereich der Durchführungsausnehmung 106a des Schlagwerkdeckels 44a angeordnet. Die Lageraufnahme 52a ist zumindest im Wesentlichen hohlzylindrisch ausgebildet. Die Lageraufnahme 52a weist an einem dem Schlagwerkdeckel 44a abgewandten Ende ein zumindest im Wesentlichen ringförmiges Anschlagelement 112a für das Zwischenwellenlager 48a auf. Das Anschlagelement 112a ist einstückig mit der Lageraufnahme 52a ausgebildet. Ein Innendurchmesser der Lageraufnahme 52a entspricht zumindest im Wesentlichen einem Außendurchmesser des Zwischenwellenlagers 48a. Vorzugsweise ist das Zwischenwellenlager 48a durch einen Presssitz in der Lageraufnahme 52a fixiert. Vorzugsweise überlappen sich das Lüfterrad 38a und zumindest das Zwischenwellenlager 48a und/oder die Zwischenwelle 18a zumindest teilweise in axialer Richtung 40a.The handheld power tool device 10 also has an intermediate shaft bearing 48a for mounting the
Die Wandungselemente 126a, 128a sind einstückig mit der Zwischenwelle 18a ausgebildet. Die Materialaussparungen 66a, 68a, 70a sind zumindest im Wesentlichen kreissegmentförmig ausgebildet. Die Planetenradaufnahmen 54a, 56a, 58a sind zumindest im Wesentlichen zylindersegmentförmig ausgebildet. Die Materialaussparungen 66a, 68a, 70a sind in eines der Wandungselemente 126a, 128a eingebracht. Die Materialaussparung 66a, 68a, 70a sind in das Wandungselement 126a eingebracht, welches in einem montierten Zustand der Zwischenwelle 18a in Richtung einer Antriebseinheit 12a angeordnet ist. Die Wandungselemente 126a, 128a weisen einen zumindest im Wesentlichen identischen Radius auf. Alternativ kann eines der Wandungselemente 126a, 128a einen geringeren Radius aufweisen.The
Die Materialaussparungen 66a, 68a, 70a sind bei einer Herstellung der Zwischenwelle 18a zu einer zeitweisen zumindest teilweisen Aufnahme einer Fräskopfspindel 78a vorgesehen (vgl.
In den
Das Drehschlagwerk 16b weist eine Zwischenwelle 18b auf, welche zumindest im Wesentlichen fluchtend zu der Antriebswelle 14b ausgerichtet ist. Des Weiteren weist die Handwerkzeugmaschinenvorrichtung 10b zumindest ein Lager 20b zur Lagerung der Antriebswelle 14b auf. Die Antriebswelle 14b ist zumindest teilweise innerhalb der Zwischenwelle 18b gelagert. Die Zwischenwelle 18b weist eine Aufnahmeausnehmung 24b auf, welche zu einer zumindest teilweisen Aufnahme der Antriebswelle 14b vorgesehen ist. Das Lager 20b ist unmittelbar an einer Einführöffnung 136b der Aufnahmeausnehmung 24b der Zwischenwelle 18b angeordnet, welche dazu vorgesehen ist, die Antriebswelle 14b in die Zwischenwelle 18b einzuführen. Das Lager 20b zur Lagerung der Antriebswelle 14b ist auf einer der Antriebseinheit 12b zugewandten Seite des Planetengetriebes 50b angeordnet. Das Lager 20b ist als ein Rollenlager ausgebildet.The
Das Drehschlagwerk 16c weist eine Zwischenwelle 18c auf, welche zumindest im Wesentlichen fluchtend zu der Antriebswelle 14c ausgerichtet ist. Des Weiteren weist die Handwerkzeugmaschinenvorrichtung 10c zumindest ein Lager 20c zur Lagerung der Antriebswelle 14c auf. Die Antriebswelle 14c ist zumindest teilweise innerhalb der Zwischenwelle 18c gelagert. Die Zwischenwelle 18c weist eine Aufnahmeausnehmung 24c auf, welche zu einer zumindest teilweisen Aufnahme der Antriebswelle 14c vorgesehen ist. Das Lager 20c ist unmittelbar an einer Einführöffnung 136c der Aufnahmeausnehmung 24c der Zwischenwelle 18c angeordnet, welche dazu vorgesehen ist, die Antriebswelle 14c in die Zwischenwelle 18c einzuführen. Das Lager 20c zur Lagerung der Antriebswelle 14c ist auf einer der Antriebseinheit 12c zugewandten Seite des Planetengetriebes 50c angeordnet. Das Lager 20c ist als ein Kugellagerlager ausgebildet. Ferner weist die Handwerkzeugmaschinenvorrichtung 10c einen Dichtring 140c auf, welcher das Lager 20c in Umfangsrichtung umschließt und welcher zwischen dem Lager 20c und einem Innendurchmesser Aufnahmeausnehmung 24c der Zwischenwelle 18c angeordnet ist. Die Zwischenwelle 18c weist eine Nut 142c auf, welche zu einer Aufnahme des Dichtrings 140c vorgesehen ist.The
Claims (10)
- Hand-held power tool device having at least one drive housing (72a; 72b; 72c), having at least one impact mechanism housing (74a; 74b; 74c) and having at least one rotary impact mechanism (16a; 16b; 16c), which has at least one planetary transmission (50a; 50b; 50c) with at least one ring gear (46a; 46b; 46c), wherein the ring gear (46a; 46b; 46c) is clamped between the drive housing (72a; 72b; 72c) and the impact mechanism housing (74a; 74b; 74c) in that the ring gear (46a; 46b; 46c) is fixed to the drive housing (72a; 72b; 72c) and to the impact mechanism housing (74a; 74b; 74c) by means of at least one screw element (76a; 76b; 76c), characterized by an impact mechanism cover (44a; 44b; 44c) which is formed in one piece with the ring gear (46a; 46b; 46c), wherein the impact mechanism cover (44a; 44b; 44c) has a passage cutout (106a) which is intended for at least one drive shaft (14a; 14b; 14c) to at least partially pass through, and an intermediate shaft bearing (48a; 48b; 48c) for supporting an intermediate shaft (18a; 18b; 18c) is arranged at least partially inside the impact mechanism cover (44a; 44b; 44c) directly at the passage cutout (106a).
- Hand-held power tool device according to Claim 1, characterized in that the ring gear (46a; 46b; 46c) is clamped radially and/or axially between the drive housing (72a; 72b; 72c) and the impact mechanism housing (74a; 74b; 74c).
- Hand-held power tool device according to either of the preceding claims, characterized in that the impact mechanism cover (44a; 44b; 44c) has at least one bearing receptacle (52a; 52b; 52c) which is intended to receive the intermediate shaft bearing (48a; 48b; 48c).
- Hand-held power tool device according to Claim 3, characterized in that the intermediate shaft bearing (48a; 48b; 48c) is fixed in the bearing receptacle (52a; 52b; 52c) by way of a press fit.
- Hand-held power tool device according to Claim 3 or 4, characterized in that the bearing receptacle (52a; 52b; 52c) is arranged in the region of the passage cutout (106a) in the impact mechanism cover (44a; 44b; 44c).
- Hand-held power tool device according to one of the preceding claims, characterized in that at least one bearing (20a; 20b; 20c) for supporting a drive shaft (14a; 14b; 14c) is provided, wherein the bearing (20a; 20b; 20c) is arranged at least partially in a plane (22a; 22b; 22c) intersecting an intermediate shaft (18a; 18b; 18c), said plane (22a; 22b; 22c) extending at least substantially perpendicularly to the intermediate shaft (18a; 18b; 18c).
- Hand-held power tool device according to Claim 6, characterized in that the drive shaft (14a; 14b; 14c) is mounted at least partially inside the intermediate shaft (18a; 18b; 18c), wherein the intermediate shaft (18a; 18b; 18c) has a receiving cutout (24a; 24b; 24c) which is intended to at least partially receive the drive shaft (14a; 14b; 14c), and the bearing (20a; 20b; 20c) is arranged inside the receiving cutout (24a; 24b; 24c).
- Hand-held power tool device according to Claim 6 or 7, characterized in that the bearing (20a) is arranged on a side of the planetary transmission (50a) that faces away from a drive unit (12a).
- Hand-held power tool device according to Claim 6 or 7, characterized in that the bearing (20b; 20c) is arranged on a side of the planetary transmission (50b; 50c) that faces a drive unit (12b; 12c).
- Hand-held power tool having at least one hand-held power tool device (10a; 10b; 10c) according to one of the preceding claims.
Applications Claiming Priority (3)
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DE102016212590 | 2016-07-11 | ||
DE102017211774.5A DE102017211774A1 (en) | 2016-07-11 | 2017-07-10 | Hand machine tool device |
PCT/EP2017/067400 WO2018011205A1 (en) | 2016-07-11 | 2017-07-11 | Hand-held power tool device |
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EP3481591A1 EP3481591A1 (en) | 2019-05-15 |
EP3481591B1 true EP3481591B1 (en) | 2021-12-15 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP17739957.3A Active EP3481591B1 (en) | 2016-07-11 | 2017-07-11 | Hand-held power tool device |
Country Status (5)
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US (1) | US10960529B2 (en) |
EP (1) | EP3481591B1 (en) |
CN (1) | CN109476002B (en) |
DE (1) | DE102017211774A1 (en) |
WO (1) | WO2018011205A1 (en) |
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CN110815138B (en) * | 2018-08-10 | 2024-02-02 | 工机控股株式会社 | Electric tool |
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US6733414B2 (en) * | 2001-01-12 | 2004-05-11 | Milwaukee Electric Tool Corporation | Gear assembly for a power tool |
JP3963323B2 (en) * | 2003-02-07 | 2007-08-22 | 株式会社マキタ | Electric tool |
JP4291173B2 (en) * | 2004-02-10 | 2009-07-08 | 株式会社マキタ | Impact driver |
US7308948B2 (en) * | 2004-10-28 | 2007-12-18 | Makita Corporation | Electric power tool |
JP4643298B2 (en) * | 2005-02-14 | 2011-03-02 | 株式会社マキタ | Impact tool |
CA2612972A1 (en) * | 2005-06-25 | 2007-01-04 | Stryker Corporation | Surgical handpiece with compact clutch and anti-wobble coupling head |
JP4400519B2 (en) * | 2005-06-30 | 2010-01-20 | パナソニック電工株式会社 | Impact rotary tool |
JP4735106B2 (en) * | 2005-07-29 | 2011-07-27 | パナソニック電工株式会社 | Electric tool |
JP2009226568A (en) * | 2008-03-25 | 2009-10-08 | Makita Corp | Impact tool |
US9193053B2 (en) * | 2008-09-25 | 2015-11-24 | Black & Decker Inc. | Hybrid impact tool |
EP2388107B1 (en) * | 2009-12-18 | 2019-09-04 | Techtronic Power Tools Technology Limited | Multi-function tool system |
JP5448884B2 (en) * | 2010-01-28 | 2014-03-19 | 株式会社マキタ | Impact tool |
JP2012016775A (en) * | 2010-07-07 | 2012-01-26 | Makita Corp | Oil pulse rotary tool |
EP2439022B1 (en) | 2010-10-08 | 2013-07-31 | Fu-Tung Hung | Bidirectional transmission power tool |
JP5757172B2 (en) * | 2011-06-16 | 2015-07-29 | 日立工機株式会社 | Electric tool |
JP6050110B2 (en) * | 2012-12-27 | 2016-12-21 | 株式会社マキタ | Impact tools |
US20150352699A1 (en) * | 2013-01-24 | 2015-12-10 | Hitachi Koki Co., Ltd. | Power Tool |
US9878435B2 (en) | 2013-06-12 | 2018-01-30 | Makita Corporation | Power rotary tool and impact power tool |
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2017
- 2017-07-10 DE DE102017211774.5A patent/DE102017211774A1/en not_active Withdrawn
- 2017-07-11 US US16/316,459 patent/US10960529B2/en active Active
- 2017-07-11 CN CN201780043228.0A patent/CN109476002B/en active Active
- 2017-07-11 WO PCT/EP2017/067400 patent/WO2018011205A1/en unknown
- 2017-07-11 EP EP17739957.3A patent/EP3481591B1/en active Active
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DE102017211774A1 (en) | 2018-01-11 |
CN109476002A (en) | 2019-03-15 |
US20190291258A1 (en) | 2019-09-26 |
WO2018011205A1 (en) | 2018-01-18 |
EP3481591A1 (en) | 2019-05-15 |
US10960529B2 (en) | 2021-03-30 |
CN109476002B (en) | 2021-06-22 |
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