SE1650983A1 - Portable electric tool system - Google Patents

Portable electric tool system Download PDF

Info

Publication number
SE1650983A1
SE1650983A1 SE1650983A SE1650983A SE1650983A1 SE 1650983 A1 SE1650983 A1 SE 1650983A1 SE 1650983 A SE1650983 A SE 1650983A SE 1650983 A SE1650983 A SE 1650983A SE 1650983 A1 SE1650983 A1 SE 1650983A1
Authority
SE
Sweden
Prior art keywords
portable electric
motor unit
tool system
rechargeable battery
tool
Prior art date
Application number
SE1650983A
Other languages
Swedish (sv)
Inventor
Nyberg Tobias
BYLUND Christian
Original Assignee
Husqvarna Ab
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Husqvarna Ab filed Critical Husqvarna Ab
Priority to SE1650983A priority Critical patent/SE1650983A1/en
Priority to DE112017003412.4T priority patent/DE112017003412T5/en
Priority to PCT/EP2017/064484 priority patent/WO2018007111A1/en
Publication of SE1650983A1 publication Critical patent/SE1650983A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G3/00—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
    • A01G3/08—Other tools for pruning, branching or delimbing standing trees
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/247—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/835—Mowers; Mowing apparatus of harvesters specially adapted for particular purposes
    • A01D34/90—Mowers; Mowing apparatus of harvesters specially adapted for particular purposes for carrying by the operator
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
    • A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
    • A45F3/14—Carrying-straps; Pack-carrying harnesses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/256—Carrying devices, e.g. belts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Computer Hardware Design (AREA)
  • Biophysics (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Forests & Forestry (AREA)
  • Portable Power Tools In General (AREA)

Abstract

Herein a portable electric tool system (2) is disclosed. The system (2) comprises a harness (4), a rechargeable battery (6), a motor unit (8), and a hand-held tool (10). The motor unit (8) comprises an electric motor powered by the rechargeable battery (6). The rechargeable battery (6) is detachably connected to the harness (4). The hand-held tool (10) is connected to the motor unit (8). The motor unit (8) is detachably connected to the harness (4).

Description

Portable Electric Tool System TECHNICAL FIELDThe present invention relates to a portable electric tool system.
BACKGROUND Various portable electrical tools are known, such as e.g. electrically powered trimmers,blowers, saws, etc. Portable electrical tools may be powered via an electrical power cableconnected to mains power. Alternatively, portable electrical tools may be cordless andaccordingly, require an on-board battery for power.
Some portable electrical tools comprise parts, which are carried as a backpack to relieve theuser from carrying the entire weight of the electrical tool in his/her hands. ln particular, thebatteries of the portable electrical tool are a heavy part of the portable electrical power tool.
US6006400 discloses a battery powered, backpack blower comprising a mounting frame, ahorizontally mounted impeller oscillated by an electric motor powered by a battery pack. Theimpeller and motor are positioned on the mounting frame above the battery back to betterdistribute the weight. A U-bracket serves to horizontally mount the electric motor whichallows for heat dissipation from the motor and also aids in dismantling the blower.
WO2013131588 discloses a backpack battery pack system. The battery pack is used inconnection with battery powered tools or battery powered outdoor power equipment. Thebattery pack system comprises a battery pack, a harness system, and an adapter which isattached to a power tool to supply electrical power to the power tool. The battery pack isattached to the harness and is carried by a user as a backpack. The power tool is anelectrically power tool, i.e. it comprises an electric motor. An electrical cable conneots thebattery pack with the adapter. The adapter in turn is connected to the power tool. Thus,instead of being powered by a battery attached directly to the power tool, the power tool ispower by the battery pack, which may have much higher capacity then a battery devised fordirect attachment to the power tool. Accordingly, the power adapter improves operation ofcordless tools, in particular cordless power tools, in cases in which comparatively heavyenergy sources, i.e. battery pack with comparatively high load capacities are used. Differentpower tools may be connected via the electrical cable and the adapter to the battery pack.
SUMMARYlt is an object of the present invention to provide a flexible portable electric tool system.
According to an aspect of the invention, the object is achieved by a portable electric toolsystem comprising a harness, a rechargeable battery, a motor unit, and a hand-held tool.The motor unit comprises an electric motor powered by the rechargeable battery. Therechargeable battery is detachably connected to the harness, and the hand-held tool isconnected to the motor unit. The motor unit is detachably connected to the harness.
Thus, a modular system is provided wherein not only the rechargeable battery but also themotor unit and the hand-held tool is exchangeable. Thus, the above mentioned object isachieved.
The portable electric tool system may be e.g. a trimmer, a blower, a saw, etc. The portableelectric tool system is portable due to the provision of the harness and the provision of therechargeable battery on the harness. The rechargeable battery and the motor unit may becarried as a backpack by a user when the user straps on the harness. Thus, the user onlyhas to carry the hand-held tool in his/her hand/s.
Herein the term - detachably connected to the harness - means that the rechargeable batteryand the motor unit are removable from the harness by simple manual manipulation of theharness and/or the rechargeable battery and the motor unit, respectively. Preferably, no toolis required for detaching the rechargeable battery and the motor unit from the harness.
According to some embodiments, the motor unit may comprise a fan configured to be rotatedby the electric motor, wherein the hand-held tool may comprise a conduit having a nozzle,and wherein an airflow produced by the fan may be directed through the conduit and thenozzle. ln this manner a so-called blower may be provided by the portable electric toolsystem. Such a blower may be used for cleaning purposes, wherein a user holding the hand-held tool points the nozzle at debris laying on the ground such that the airflow moves thedebris ahead of the user, and the user may e.g. gather the debris in piles for later removal.
According to some embodiments, the motor unit may comprise a coupling configured totransfer a rotation of the electric motor, wherein the hand-held tool may comprise a rotatingtool, and wherein the rotation of the electric motor may be transferred via the coupling to therotating tool. ln this manner the portable electric tool system may be utilised with a hand-heldtool comprising e.g. a saw, a rotating brush, a rotating trimmer, etc. 3 According to some embodiments, the motor unit may comprise a coupling configured totransfer a motion caused by the electric motor, wherein the hand-held tool comprises areciprocating tool, and wherein the motion caused by the electric motor is transferred via thecoupling to the reciprocating tool. ln this manner the portable electric tool system may beutilised with a hand-held tool comprising e.g. a reciprocating brush, a hedge trimmercomprising reciprocating blades, a secateurs, etc.
Further features of, and advantages with, the present invention will become apparent whenstudying the appended claims and the following detailed description.
BRIEF DESCRIPTION OF THE DRAWINGS Various aspects of the invention, including its particular features and advantages, will bereadily understood from the example embodiments discussed in the following detaileddescription and the accompanying drawings, in which: Figs. 1 - 4b, and 6 illustrate portable electric tool systems according to variousembodiments, and Fig. 5 illustrates embodiments of a securing arrangement of a portable electric tool system.
DETAILED DESCRIPTION Aspects of the present invention will now be described more fully. Like numbers refer to likeelements throughout. Well-known functions or constructions will not necessarily be describedin detail for brevity and/or clarity.
Fig. 1 illustrates a portable electric tool system 2 according to embodiments. The portableelectric tool system 2 according to these embodiments is a blower. The portable electric toolsystem 2 comprises a harness 4, a rechargeable battery 6, a motor unit 8, and a hand-heldtool 10. The portable electric tool system 2 is based around a backpack unit and the hand-held tool 10. The backpack unit comprises the rechargeable battery 6 and the motor unit 8,which both are attached to the harness 4 for being carried on the back of a user of theportable electric tool system 2. The hand-held tool 10 is connected to the motor unit 8 forputting a power output of the motor unit 8 to use. The hand-held tool 10 is held by one orboth hands of the user and thus, is controlled/operated by the user. Accordingly, electricpower and a power output are provided by the backpack unit to the hand-held tool 10.
The motor unit 8 comprises an electric motor powered by the rechargeable battery 6. Themotor unit 8 provides a power output. Depending on the type of hand-held tool 10 connected 4 to the motor unit 8, the power output may be e.g. an airflow, a rotating motion provided via ashaft, a wire, etc., or a reciprocating motion provided via a shaft, a wire, etc.
The rechargeable battery 6 is detachably connected to the harness 4. Also the motor unit 8 isdetachably connected to the harness 4. Thus, a modular system is provided wherein both therechargeable battery 6 and the motor unit 8 are exchangeable. Together with the motor unit8, the hand-held tool 10 may be exchangeable. The hand-held tool 10 may be exchangeablenot only together with the motor unit 8, but according to some embodiments removable fromthe motor unit 8 and thus, exchangeable. The latter may be the case when different kinds ofhand-held tools are driven by the same kind of power output, such as e.g. a rotating shaft ofthe electric motor.
Figs. 2a and 2b illustrate the portable electric tool system 2 of Fig. 1 without the hand-heldtool 10. ln Fig. 2a the rechargeable battery 6 and the motor unit 8 are shown attached to theharness 4. ln Fig. 2b the rechargeable battery 6 and the motor unit 8 are shown detachedfrom the harness 4. ln addition to the electric motor 12, the motor unit 8 comprises a fan 14(schematically illustrated) configured to be rotated by the electric motor 12. The fan 14 maycomprise an axial or a radial impeller. As shown in Fig. 1, the hand-held tool 10 comprises aconduit 16 having a nozzle 18. An airflow produced by the fan 14 is directed through theconduit 16 and the nozzle18. ln these embodiments, as shown in Fig. 2b, the portable electric tool system 2 comprises aproximal interface 22 for releasably connecting the rechargeable battery 6 and the motor unit8 to the harness 4. ln this manner the rechargeable battery 6 and the motor unit 8 may bedetachably attached to the harness 4. ln these embodiments, the proximal interface 22 is common for the rechargeable battery 6and the motor unit 8. The harness 4 comprises a rear face 20 facing away from a backboneof a user of the portable electric tool system 2. The proximal interface 22 is arrangedbetween the rear face and one of the rechargeable battery 6 and the motor unit 8. Theproximal interface 22 may be provided at the motor unit 8, and the rechargeable battery 6may in turn connect to the motor unit 8 and thus, may be indirectly connected to the proximalinterface 22, as shown in Fig. 2b. According to alternative embodiments, the proximalinterface may connect directly to the rechargeable battery and the motor unit may in turn beconnected to the rechargeable battery and thus, may be indirectly connected to the proximalinterface. Accordingly, the rechargeable battery 6 may be detachably connected, directly orindirectly, via the proximal interface 22 to the harness 4. Similarly, the motor unit 8 may be 5 detachably connected, directly or indirectly, via the proximal interface 22 to the harness 4, in alternative embodiments.
Accordingly, in these embodiments, the portable electric tool system 2, comprises a distalinterface 24 for releasably connecting the rechargeable battery 6 with the motor unit 8. lnthese embodiments, the distal interface 24 is provided between the motor unit 8 and therechargeable battery 6.
This may be embodied as shown in Figs. 2a and 2b, i.e. with the motor unit 8 connected viathe proximal interface 22 to the harness 4, and with the rechargeable battery 6 beingattached to the motor unit 8 on a side of the motor unit 8 opposite to the proximal interface22. This has the advantage that the rechargeable battery 6 is easily replaceable with a fullycharged battery, when so required.
According to alternative embodiments, instead the rechargeable battery 6 is connected viathe proximal interface 22 to the harness 4, and the motor unit 8 is attached to therechargeable battery 6 on a side of the rechargeable battery 6 opposite to the proximalinterface 22. This may have the advantage that the heavier unit of the rechargeable battery 6and the motor unit 8, i.e. the rechargeable battery 6, is positioned close to the user of theportable electric tool system 2.
According to further alternative embodiments, the distal interface may be provided on adownward facing side of the rechargeable battery 6. ln such embodiments the motor unit 8may be removably attached to the rechargeable battery 6 underneath the rechargeablebattery 6, seen in a position of the portable electric tool 2 when carried by a user thereof.
The distal interface 24 may comprise an electrical connection 26 between the rechargeablebattery 6 and the motor unit 8. ln this manner an electrical connection between therechargeable battery 6 and the motor unit 8 may easily be established by connecting thechargeable battery 6 with the motor unit 8 via the distal interface 24.
Returning to Fig. 1, the hand-held tool 10 may comprise a user interface 11, wherein theuser interface 11 may be configured for starting and stopping the electric motor. ln this manner a user of the portable electric tool system 2 may easily control basic functionsof the portable electric tool system 2 from the hand-held tool 10. The user interface 11 maycomprise further features, such as e.g. a speed control of the electric motor, display ofbattery power status, indicate malfunction, etc. 6 Figs. 3a and 3b illustrate a portable electric tool system 2 according to embodiments. Theseembodiments resemble in much the embodiments of Figs. 1 - 2b. The main differences willbe discussed in the following. The portable electric tool system 2 is shown without the hand-held tool. ln Fig. 3a the rechargeable battery 6 and the motor unit 8 are shown attached tothe harness 4. ln Fig. 3b the rechargeable battery 6 and the motor unit 8 are showndetached from the harness 4.
The motor unit 8 may comprise a fan, the portable electric tool system 2 thus, forming ablower. Alternatively, the motor unit 8 may be configured for driving a rotating orreciprocating hand-held tool as will be discussed below with reference to Figs. 6.
Again, the harness 4 comprises a rear face 20 facing away from a backbone of a user of theportable electric tool system 2. The portable electric tool system 2 comprises a proximalinterface 22 for releasably connecting the rechargeable battery 6 and the motor unit 8 to theharness 4. ln these embodiments of the motor unit 8 is arranged below the rechargeablebattery 6 when connected to the harness 4, as shown in Fig. 3a. Again, the proximalinterface 22 is common for the rechargeable battery 6 and the motor unit 8. The motor unit 8is directly connected to the harness 4 via the proximal interface 22. The rechargeable battery6 in turn is connect to the motor unit 8 and thus, is indirectly connected to the proximalinterface 22.
Again, the portable electric tool system 2, comprises a distal interface 24 for releasablyconnecting the rechargeable battery 6 with the motor unit 8. ln these embodiments, the distalinterface 24 is provided between the motor unit 8 and the rechargeable battery 6. Morespecifically, the motor unit 8 comprises a connecting plate 28. The connecting plate 28connects via the proximal interface 22 to the harness 4. lVloreover, the connecting plate 28forms part of the distal interface 24 between the rechargeable battery 6 and the motor unit 8.ln this manner both the rechargeable battery 6 and the motor unit 8 may be provided close tothe body of a user, see Fig. 3a. Again, the distal interface 24 may comprise an electricalconnection 26 between the rechargeable battery 6 and the motor unit 8.
Figs. 4a and 4b illustrate a portable electric tool system 2 according to embodiments. Theseembodiments resemble in much the embodiments of Figs. 1 - 3b. The main differences willbe discussed in the following. The portable electric tool system 2 is shown without the hand-held tool. ln Fig. 4a the rechargeable battery 6 and the motor unit 8 are shown attached tothe harness 4. ln Fig. 4b the rechargeable battery 6 and the motor unit 8 are showndetached from the harness 4. Again, the motor unit 8 may comprise a fan, the portable 7 electric tool system 2 thus, forming a blower. Alternatively, the motor unit 8 may beconfigured for driving a rotating or reciprocating hand-held tool as will be discussed belowwith reference to Figs. 6.
Again, the harness 4 comprises a rear face 20 facing away from a backbone of a user of theportable electric tool system 2. The portable electric tool system 2 comprises a proximalinterface 22 for releasably connecting the rechargeable battery 6 and the motor unit 8 to theharness 4. The proximal interface 22 is common for the rechargeable battery 6 and the motorunit 8. ln these embodiments, both the motor unit 8 and the rechargeable battery 6 connectdirectly to the harness 4 via the proximal interface 22. Thus, the rechargeable battery 6 isdetachably connected directly to the harness 4 via the proximal interface 22, and the motorunit 8 is detachably connected directly to the harness 4 via the proximal interface 22. Thishas the advantage that the rechargeable battery 6, as well as the motor unit 8, are easilyreplaceable, when so required. ln these embodiments, the proximal interface 22 may comprise an electrical connection 30between the rechargeable battery 6 and the motor unit 8. ln this manner an electricalconnection between the rechargeable battery 6 and the motor unit 8 may easily beestablished via the proximal interface 22 by connecting the chargeable battery 6 and themotor unit 8 to the harness 4 the proximal interface 22.
Fig. 5 illustrates embodiments of a securing arrangement 32 of a portable electric toolsystem 2. Accordingly, the proximal interface 22 may comprise at least one securingarrangement 32 for securing the rechargeable battery 6 and/or the motor unit 8 to theharness. The at least one securing arrangement 32 may be manually releasable. ln thismanner it may be ensured that the rechargeable battery 6 and/or the motor unit 8 is securelyheld onto the harness 4 when a user operates the portable electric tool system 2. When therechargeable battery 6 and/or the motor unit 8 is to be removed from the harness 4, the atleast one securing arrangement 32 is manually released and the rechargeable battery 6and/or the motor unit 8 may be removed from the harness 4. When the rechargeable battery6 and/or the motor unit 8 is again engaged with the harness 4 via the proximal interface 22,the at least one securing arrangement 32 secures the rechargeable battery 6 and/or themotor unit 8 to the harness 4. ln Fig. 5 one exemplary embodiment of such a securingarrangement 32 is shown. However, the skilled person realises that many alternativeembodiments of securing arrangements could be used for the same purpose. 8 ln these embodiments the securing arrangement 32 comprises a pivotable hook 34. Thepivotable hook 34 pivots about a pivot axis 36 and comprises a hook portion 38, whichengages with an edge 40 provided at a harness portion of the proximal interface 22. Thepivotable hook 34 may be biased in a direction such that the hook portion 38 is pivotedtowards the edge 40. When releasing the securing arrangement 32, a user manually pivotsthe hook portion 38 in a direction away from the edge 40.
Fig. 6 illustrates a portable electric tool system 2 according to embodiments. ln theseembodiments, the motor unit 8 comprises a coupling 42 configured to transfer a rotation ofthe electric motor of the motor unit 8. The hand-held tool 10 may comprise a rotating tool 44,44', 44”, 44”', a rotating fan, or a reciprocating tool 46. The rotation of the electric motor istransferred via the coupling 42 to the rotating tool 44, 44', 44”, 44'”, the rotating fan, or thereciprocating tool 46. The portable electric tool system 2 is illustrated in Fig. 6 a dismountedstate with the rechargeable battery 6 and the motor unit 8 removed from the harness 4. Sixdifferent hand-held tools 10 are shown in Fig. 6.
According to some embodiments, the rotating tool 44', 44"' may comprise a saw blade 48 ora saw chain 50. ln this manner a portable electric tool system 2 configured for sawingpurposes may be provided. The saw blade 48 may be a rotating saw blade arranged on thehand-held tool 10 in order to be controlled/operated by a user of the portable electric toolsystem 2. The saw chain 50 may rotate about a bar as in an ordinary chainsaw. The sawchain 50 and the bar are arranged on the hand-held tool 10 in order to be controlled/operatedby a user of the portable electric tool system 2.
According to some embodiments, the rotating tool 44 may comprise a trimmer device 52. lnthis manner a portable electric tool system 2 configured for trimming purposes may beprovided. The trimmer device 52 may comprise a rotating body with at least one trimmerstring 54 attached thereto. The trimmer device 52 is arranged on the hand-held tool 10 inorder to be controlled/operated by a user of the portable electric tool system 2.
According to some embodiments, the rotating tool 44” may comprise a brush 56. ln thismanner a portable electric tool system 2 configured for brushing purposes may be provided.The brush 56 may comprise a number of at least partially radially extending bristles. Thebrush 56 is arranged on the hand-held tool 10 in order to be controlled/operated by a user ofthe portable electric tool system 2. 9 According to some embodiments, the hand-held tool 10 may comprise a fan arranged in aconduit 58. A nozzle 18 is arranged at an end of the conduit 58. The fan is rotatable by themotor unit 8 via the coupling 42 thus, producing an airflow through the conduit 58 and thenozzle 18. Accordingly, an embodiment of a blower may be provided. A user may point thenozzle 8 towards debris laying on the ground for moving the debris from one position intoanother position.
According to some embodiments, the hand-held tool 10 may comprise a reciprocating tool46. The reciprocating tool 46 may for instance comprise at least one cutting blade 60arranged for reciprocating motion, such as in a hedge trimmer, or in a secateurs. Accordingto some embodiments the rotating motion from the motor unit 8 transferred via the coupling42 may be converted into a reciprocating motion at the at least one cutting blade 60 in thehand-held tool 10. ln this manner a portable electric tool system 2 configured for hedgetrimming purposes may be provided.
According to some embodiments, the motor unit 8 may comprise a coupling 42 configured totransfer a motion caused by the electric motor of the motor unit 8. The hand-held tool 10 maycomprise a reciprocating tool 46. The motion caused by the electric motor may transferredvia the coupling 42 to the reciprocating tool 46. The motion transferred via the coupling 42may be a rotating motion as discussed above. However, alternatively the motion transferredvia the coupling 42 may be a reciprocating motion. The thus transferred reciprocating motionmay be utilised in the reciprocating tool 46. The reciprocating tool at 46 may be a hedgetrimmer comprising a reciprocating cutting blade 60 as discussed above in connection withFig. 6. Thus, according to some embodiments, the reciprocating tool 46 comprises a hedgetrimmer. ln this manner a portable electric tool system 2 configured for hedge trimmingpurposes may be provided. lt is to be understood that the foregoing is illustrative of various example embodiments andthat the invention is defined only by the appended claims. A person skilled in the art willrealize that the example embodiments may be modified, and that different features of theexample embodiments may be combined to create embodiments other than those describedherein, without departing from the scope of the present invention, as defined by theappended claims. The motor unit and/or the rechargeable battery may for instance bearranged on a front portion of the harness instead of on a rear portion of the harness. Theportable electric tool system may comprise more than one rechargeable battery eitherattached directly to the harness, on rear or front portion thereof, or attached to the motor unit,or attached to another rechargeable battery. An electrical connection between the rechargeable battery and the motor unit may be provided via a cable, which extends from therechargeable battery and which is manually connected to the motor unit. A further example ofa portable electric tool system according to the present invention may be a suction cleaner,which utilises e.g. a fan for producing an airflow through a hand-held tool comprising asuction conduit, and which is arranged for sucking up debris such as e.g. leafs and othergardening residues. A further example of a portable tools system in the form of a blower mayutilise a compressor for producing pressurised air. The pressurised air may be utilised forproducing an airflow through a hand-tool. The compressor may e.g. form part of the motor unit.

Claims (17)

1. A portable electric tool system (2) comprising a harness (4), a rechargeable battery (6), amotor unit (8), and a hand-held tool (10), wherein the motor unit (8) comprises an electricmotor (12) powered by the rechargeable battery (6), wherein the rechargeable battery (6) isdetachably connected to the harness (4), and wherein the hand-held tool (10) is connected tothe motor unit (8), characterised in that the motor unit (8) is detachably connected to the harness (4).
2. The portable electric tool system (2) according to claim 1, comprising a proximal interface(22) for releasably connecting the rechargeable battery (6) and the motor unit (8) to theharness (4).
3. The portable electric tool system (2) according to claim 2, wherein the proximal interface(22) comprises an electrical connection (30) between the rechargeable battery (6) and the motor unit (8).
4. The portable electric tool system (2) according to claim 2 or 3, wherein the proximalinterface (22) is common for the rechargeable battery (6) and the motor unit (8).
5. The portable electric tool system (2) according to any one of claims 2 - 4, wherein therechargeable battery (6) is detachably connected, directly or indirectly, to the harness (4) viathe proximal interface (22).
6. The portable electric tool system (2) according to any one of claims 2 - 5, wherein themotor unit (8) is detachably connected, directly or indirectly, to the harness (4) via theproximal interface (22).
7. The portable electric tool system (2) according to any one of claims 2 - 6, wherein theproximal interface (22) comprises at least one securing arrangement (32) for securing therechargeable battery (6) and/or the motor unit (8) to the harness (4), and wherein the at leastone securing arrangement (32) is manually releasable.
8. The portable electric tool system (2) according to any one of claims 2 - 7, comprising adistal interface (24) for releasably connecting the rechargeable battery (6) with the motor unit (8)- 12
9. The portable electric tool system (2) according to claim 8, wherein the distal interface (24)comprises an electrical connection (26) between the rechargeable battery (6) and the motorunit (8).
10. The portable electric tool system (2) according to any one of the preceding claims,wherein the motor unit (8) comprises a fan (14) configured to be rotated by the electric motor(12), wherein the hand-held tool (10) comprises a conduit (16; 58) having a nozzle (18), andwherein an airflow produced by the fan (14) is directed through the conduit (16; 58) and thenozzle (18).
11. The portable electric tool system (2) according to any one of claims 1 - 9, wherein themotor unit (8) comprises a coupling (42) configured to transfer a rotation of the electric motor(12), wherein the hand-held tool (10) comprises a rotating tool (44; 44'; 44”; 44'”), andwherein the rotation of the electric motor (12) is transferred via the coupling (42) to therotating tool (44; 44'; 44"; 44'”).
12. The portable electric tool system (2) according to claim 11, wherein the rotating tool(44'; 44'") comprises a saw blade (48) or a saw chain (50).
13. The portable electric tool system (2) according to claim 11, wherein the rotating tool (44)comprises a trimmer device (52).
14. The portable electric tool system (2) according to claim 11, wherein the rotating tool (44")comprises a brush (56).
15. The portable electric tool system (2) according to any one of claims 1 - 9, wherein themotor unit (8) comprises coupling (42) configured to transfer a motion caused by the electricmotor (12), wherein the hand-held tool (10) comprises a reciprocating tool (46), and whereinthe motion caused by of the electric motor (12) is transferred via the coupling (42) to thereciprocating tool (46).
16. The portable electric tool system (2) according to claim 15, wherein the reciprocating tool(46) comprises a hedge trimmer.
17. The portable electric tool system (2) according to any one of the preceding claims,wherein the hand-held tool (10) comprises a user interface (11), and wherein the userinterface (11) is configured for starting and stopping the electric motor (12).
SE1650983A 2016-07-06 2016-07-06 Portable electric tool system SE1650983A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE1650983A SE1650983A1 (en) 2016-07-06 2016-07-06 Portable electric tool system
DE112017003412.4T DE112017003412T5 (en) 2016-07-06 2017-06-14 PORTABLE ELECTRIC TOOL SYSTEM
PCT/EP2017/064484 WO2018007111A1 (en) 2016-07-06 2017-06-14 Portable electric tool system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1650983A SE1650983A1 (en) 2016-07-06 2016-07-06 Portable electric tool system

Publications (1)

Publication Number Publication Date
SE1650983A1 true SE1650983A1 (en) 2018-01-07

Family

ID=59070649

Family Applications (1)

Application Number Title Priority Date Filing Date
SE1650983A SE1650983A1 (en) 2016-07-06 2016-07-06 Portable electric tool system

Country Status (3)

Country Link
DE (1) DE112017003412T5 (en)
SE (1) SE1650983A1 (en)
WO (1) WO2018007111A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10862176B2 (en) 2018-06-15 2020-12-08 Florida Power & Light Company Portable rechargeable battery pack with a selectable battery switch and state of charge display for cordless power tools
DE102018118552A1 (en) 2018-07-31 2020-02-06 Wacker Neuson Produktion GmbH & Co. KG Carrying device with energy storage and electrical converter
EP3624211B1 (en) * 2018-09-17 2024-03-06 Andreas Stihl AG & Co. KG Battery pack coupling system
EP3622849B1 (en) 2018-09-17 2022-11-02 Andreas Stihl AG & Co. KG Back-held carrying device, in particular for a battery pack
AU2022204542A1 (en) 2021-06-29 2023-01-19 Techtronic Cordless Gp Wearable vacuum cleaner
US20230076430A1 (en) * 2021-08-24 2023-03-09 Emerson Electric Co. Harness adjustment assembly for a user-worn electrical appliance and connection system for same

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4989323A (en) * 1989-06-05 1991-02-05 Caspro Mechanical Technologies, Inc. Portable power unit for various power tolls
US6006400A (en) 1996-02-26 1999-12-28 Presenza; Tom Electric backpack blower
JP3398303B2 (en) * 1997-06-27 2003-04-21 本田技研工業株式会社 Backpack work machine
CN102263217A (en) * 2011-05-31 2011-11-30 常州格力博工具有限公司 Backpack power device for handheld tool
US20150050532A1 (en) 2012-03-05 2015-02-19 Husqvarna Ab Battery pack system
JP2014135936A (en) * 2013-01-17 2014-07-28 Hitachi Koki Co Ltd Backpack for working machine, and backpack type working machine
EP2819207B1 (en) * 2013-06-25 2017-09-27 Outils Wolf Combination of a support system, battery and driven device
JP2015082989A (en) * 2013-10-25 2015-04-30 株式会社マキタ Knapsack type implement
DE202013011447U1 (en) * 2013-12-21 2014-02-06 Calmdura Gmbh Carrying system for modular battery unit

Also Published As

Publication number Publication date
DE112017003412T5 (en) 2019-03-21
WO2018007111A1 (en) 2018-01-11

Similar Documents

Publication Publication Date Title
SE1650983A1 (en) Portable electric tool system
US10736403B2 (en) Back-mounted power tool systems and methods of use
US20200253360A1 (en) Power tool having a backpack-housed power supply
KR100459740B1 (en) Surgical cast saw
US6305048B1 (en) Electric backpack blower and accessory operator
US7382104B2 (en) Backpack style power-pack with flexible drive and quick connect power take-off for connection to a variety of powered tools
US20160270458A1 (en) Cooling backpack apparatus
CN106105798B (en) Operating handle and backpack blower with same
EP3420807B1 (en) Backpack blower, and control handle assembly
CA2525238A1 (en) Belt or clothing-mountable battery-powered hair clipper with holster
US7510225B1 (en) Combined manure fork and fan-type shavings blower
EP2857142A1 (en) Portable power tool
CN106192837B (en) Fan system
CN110475469B (en) Backpack work apparatus
JP6253088B2 (en) Back working machine
CN203313689U (en) Portable cotton picker
CN112628166A (en) Blower fan
US20140262388A1 (en) Tool having a rear motor
EP1260131A1 (en) Grass-cutting machines
JP6865946B2 (en) Seed collector and seed collection method and greening method using this
CN105673528B (en) Electric tool
JP2008079523A (en) Garden tree clipper
US10524967B2 (en) Orthopedic cast removal apparatus
US20240113562A1 (en) Inductive power supply backpacks for inductively powered power tools
CA2929011C (en) Back-mounted power tool systems and methods of use

Legal Events

Date Code Title Description
NAV Patent application has lapsed