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WO1994011162A1 - Outil a moteur - Google Patents

Outil a moteur Download PDF

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Publication number
WO1994011162A1
WO1994011162A1 PCT/GB1993/002293 GB9302293W WO9411162A1 WO 1994011162 A1 WO1994011162 A1 WO 1994011162A1 GB 9302293 W GB9302293 W GB 9302293W WO 9411162 A1 WO9411162 A1 WO 9411162A1
Authority
WO
WIPO (PCT)
Prior art keywords
direct current
motor
storage means
current storage
tool according
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.)
Ceased
Application number
PCT/GB1993/002293
Other languages
English (en)
Inventor
Colin Edward Cartwright
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Emerson International Ltd
Original Assignee
Emerson International Ltd
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 Emerson International Ltd filed Critical Emerson International Ltd
Priority to AU54277/94A priority Critical patent/AU5427794A/en
Priority to PCT/AU1994/000257 priority patent/WO1994028613A1/fr
Priority to AU67178/94A priority patent/AU6717894A/en
Publication of WO1994011162A1 publication Critical patent/WO1994011162A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/06—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner
    • 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
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/26—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by the armature windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/06—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner
    • H01H9/063—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner enclosing a reversing switch
    • 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

Definitions

  • This invention relates to a portable multi purpose power tool by direct current power supply.
  • Direct current multi purpose power tools have been developed so that for example they can be used both as a drill or a screwdriver. Such tools have gearing to reduce the output speed from the direct current motor which is an integral pan of the tool. The reason for the gearing is due to the design and type of motor which generally has an output shaft speed requiring speed reduction. Furthermore, such motors usually impose considerable demands upon the direct current power supply (battery) and therefore the motor can rapidly drain the stored battery charge.
  • a tool which can be convertible between different modes, characterised by a self-contained power tool part for one mode and by means for receiving the self-contained power tool part for operation in a second mode.
  • the self-contained power tool part may comprise a screwdriver in the first mode.
  • the self-contained tool part may comprise a drill in the second mode.
  • the tool part and receiving means may each comprise a power means, for example a plurality of rechargeable or replaceable batteries.
  • the power means may each comprise respectively a battery means and or electrical circuit means.
  • the circuit modifying means may comprise a movable plug part which may suitably be guided by a guide part. This provides for ease of operation.
  • interlock part operable to allow insertion of the self- contained power tool part in the receiving means.
  • interlock part may be automatically operable.
  • the interlock part may comprise an interlock adapted for releasable interlocking engagement with the self-contained part, by a shaft, and by a resiliently mounted pivotable arm device which may be operably connected with the interlock.
  • the self-contained tool part may have a seating for receiving the interlock.
  • the seating may comprise a slot in the tool part. This provides for a positive interlock.
  • a switch of the circuit of the tool part may suitably be in the slot. This provides for a neat appearance and smooth operation.
  • the circuit modifying means may comprise a handle and the interlock may comprise two cam parts whereby when the handle is turned in opposite sense respectively the tool is operable to rotate in a clockwise or anti-clockwise sense.
  • the circuit modifying means may comprise a piston of the tool part and a conductor of the receiving part adapted to break the circuit of the self- contained part.
  • the tool is suitably a portable power tool.
  • a portable power tool characterised by a first direct current storage means adapted to be electrically connected to a direct current motor by a switch means and by a circuit modification means adapted to allow a second direct current storage means to be inserted in series with the first direct current storage means.
  • the portable power tool may have a means for reversing the turning direction of the motor.
  • the second direct current storage means may be contained within an attachment means adapted to engage the portable power tool.
  • the attachment means may have a circuit modification means activator, wherein when the portable power tool is engaged by the attachment means the circuit modification means activator, in conjunction with the circuit modification means, inserts the second direct current storage means in series with the first direct current storage means.
  • the attachment means may have a switch means adapted electrically to connect the first direct current storage means and second direct current storage means to the direct current motor.
  • an attachment means adapted to engage a power tool having a first direct current storage means, the attachment means having a second direct current storage means adapted to be inserted in series with the first direct current storage means.
  • the attachment means may have a switch means adapted to provide a series connection of the first direct current storage means and second direct current storage means to a direct current electrical motor adapted to drive the power tool.
  • a power tool having a first direct current storage means adapted to be electrically connected to a direct current motor by a first switch means, and a second direct current storage means contained within an attachment means, the attachment means engaging the power tool such that the second direct current storage means is inserted in series with the first direct current storage means, wherein the attachment means is adapted to disengage the power tool such that when disengaged the second direct current storage means is removed from being in series with the first direct current storage means.
  • the second direct current storage means may be adapted to be removed from being in series with the first direct current storage means such that the first direct current storage means remains adapted to be electrically connected to the direct current motor by the switch means.
  • the portable power tool may have a means of reversing the turning direction of the motor.
  • the attachment means may have a second switch means adapted to connect the first direct current storage means and the second direct current storage means electrically to the direct current motor.
  • the attachment means may have an interlock means adapted to activate the first switch means when the attachment means engages the power tool such that the second switch means provides the electrical connection between both the first direct current storage means and second direct current storage means and the direct current motor.
  • the motor may be a permanent magnet direct current motor, and the first and second battery means for providing electrical power to the permanent magnet direct current motor whereby it is possible to damage either of the battery means by drawing excessive currents, the arrangement being adapted such that the current drawn by the motor will not cause damage to occur to either of the battery means when the motor is in a stalled condition for a substantial period of time.
  • the direct current permanent magnet motor may be wound such that when it is connected to a 12 Volt battery means, the battery's terminal voltage does not reduce by more than about 20% of its no-load value when the motor is at or near a stalled condition.
  • Each individual coil between two armature commutator segments may have between 35 to 400 turns.
  • Each individual coil between two armature commutator segments may have between 50 to 400 turns.
  • Each individual coil between two armature commutator segments may have between 75 to 400 turns.
  • Each individual coil between two armature commutator segments may have between 100 to 400 turns.
  • Each individual coil between two armature commutator segments may have between 125 to 400 turns.
  • Each individual coil between two armature commutator segments may have between 35 to 375 turns.
  • Each individual coil between two armature commutator segments may have between 50 to 375 turns.
  • Each individual coil between two armature commutator segments may have between 75 to 375 turns.
  • Each individual coil between two armature commutator segments may have between 100 to 375 turns.
  • Each individual coil between two armature commutator segments may have between 125 to 375 turns.
  • Each individual coil between two armature commutator segments may have between 35 to 350 turns.
  • Each individual coil between two armature commutator segments may have between 75 to 350 turns.
  • Each individual coil between two armature commutator segments may have between 100 to 350 turns.
  • Each individual coil between two armature commutator segments may have between 125 to 350 turns.
  • Each individual coil between two armature commutator segments may have between 35 to 325 turns.
  • Each individual coil between two armature commutator segments may have between 50 to 325 turns.
  • Each individual coil between two armature commutator segments may have between 75 to 325 turns.
  • Each individual coil between two armature commutator segments may have between 100 to 325 turns.
  • Each individual coil between two armature commutator segments may have between 125 to 325 turns.
  • Each individual coil between two armature commutator segments may have between 35 to 300 turns.
  • Each individual coil between two armature commutator segments may have between 50 to 300 turns.
  • Each individual coil between two armature commutator segments may have between 75 to 300 turns.
  • Each individual coil between two armature commutator segments may have between 100 to 300 turns.
  • Each individual coil between two armature commutator segments may have between 125 to 300 turns.
  • Each individual coil between two armature commutator segments may have between 35 to 275 turns.
  • Each individual coil between two armature commutator segments may have between 50 to 275 turns.
  • Each individual coil between two armature commutator segments may have between 75 to 275 turns.
  • Each individual coil between two armature commutator segments may have between 100 to 275 turns.
  • Each individual coil between two armature commutator segments may have between 125 to 275 turns.
  • Each individual coil between two armature commutator segments may have between 35 to 250 turns.
  • Each individual coil between two armature commutator segments may have between 50 to 250 turns.
  • Each individual coil between two armature commutator segments may have between 75 to 250 turns.
  • Each individual coil between two armature commutator segments may have between 100 to 250 turns.
  • Each individual coil between two armature commutator segments may have between 125 to 250 turns.
  • Each individual coil between two armature commutator segments may have between 35 to 225 turns.
  • Each individual coil between two armature commutator segments may have between 50 to 225 turns.
  • Each individual coil between two armature commutator segments may have between 75 to 225 turns.
  • Each individual coil between two armature commutator segments may have between 100 to 225 turns.
  • Each individual coil between two armature commutator segments may have between 125 to 225 turns.
  • Each individual coil between two armature commutator segments may have between 35 to 200 turns.
  • Each individual coil between two armature commutator segments may have between 50 to 200 turns.
  • Each individual coil between two armature commutator segments may have between 75 to 200 turns.
  • Each individual coil between two armature commutator segments may have between 100 to 200 turns.
  • Each individual coil between two armature commutator segments may have between 125 to 200 turns.
  • Each individual coil between two armature commutator segments may have between 35 to 175 turns.
  • Each individual coil between two armature commutator segments may have between 50 to 175 turns.
  • Each individual coil between two armature commutator segments may have between 75 to 175 turns.
  • Each individual coil between two armature commutator segments may have between 100 to 175 turns.
  • Each individual coil between two armature commutator segments may have between 125 to 175 turns.
  • the wire gauge of each individual coil may suitable be the thickest that can be wound upon the armature for the given number of turns, and suitably the wire gauge of each individual coil may be less than 0.4mm.
  • Capacitors may be connected across each pole-piece winding. This offers the additional advantage of substantially reducing radio frequency interference. This is not achievable with motors currently used for example in commercially available power tools. With such tools the excessive currents required by the armature and physical size capacitor constraints do not readily allow for such capacitors to be connected across each pole winding. Stated in another way, capacitors whose size is not too large for the available space are not particularly effective in reducing RFI.
  • Fig. 1 illustrates a portable power tool
  • Fig. 2 illustrates an attachment to the power tool which provides additional voltage to the power tool
  • Fig. 3 illustrates the switch mechanism of the power tool
  • Fig. 4 illustrates the electrical circuit of the power tool and the attachment means.
  • Fig. 1 illustrates a power tool 1 which in the embodiment is portable, self-contained and which has a push button switch 3, and power means in the form of ten 1.2 volt rechargeable batteries 12, rechargeable via a recharging socket 4.
  • a motor 5 drives a gearbox 6 which turns a chuck 7.
  • the chuck is attached to a spindle and the chuck can be removed from the spindle such that a screwdriver means can be inserted directly into the spindle as opposed to the screwdriver means being gripped by the chuck 7.
  • the push button switch 3 is adapted to move within a slot 34. When the push button switch 3 is in the centre of the slot 34, as shown in Fig.
  • Fig. 2 the self contained power tool 1 is shown inserted in means such as attachment means 2 for receiving the tool 1 as by sliding from right to left as viewed in Fig. 2.
  • a movable plug part such as a jack plug 10 which, when inserted, modifies the circuitry of the self-contained power tool 1.
  • the attachment means further has a hollow handle 18 within which are located in the embodiment power means such as ten 1.2 volt batteries 17 that are adapted to be recharged via the socket 35.
  • a screw driver blade Assuming a screw driver blade is used in the self-contained part in one operating mode, it may be replaced by a drill bit for the second operating mode.
  • FIG. 3 and Fig.4 there is illustrated the switch mechanism and the electrical circuitry of both the self contained power tool 1 and attachment means 2.
  • a turning handle 8 is adapted to rotate the inner body 9 such that push button switch 3 will be activated by either a cam 32 or a cam 33 of the interlock 16. This therefore connects a spring means 24 to the positive of the battery 12.
  • both the spring means 23 and 24 are mechanically connected to the inner body 9, therefore when the turning handle 8 is pushed clockwise (as viewed) the spring means 23 would be connected to pin 21 and the spring means 24 would be connected to the pin 22. This provides a simple mechanism for reversing the direction of the motor 5 which is electrically connected to the pins 21 and 22.
  • the push button switch 3 Upon the turning handle 8 being pushed either clockwise or anticlockwise the push button switch 3 will close its contacts by either being activated by the cam 32 or the cam 33. However, the motor 5 will not turn until the switch 13, located upon the handle 18, is closed.
  • the switch 13 is inserted into the circuit by a circuit modification means 20 which includes the jack plug 10 having an inner conductor 31 surrounded by an insulator 30 and an outer conductor 29.
  • a circuit modification means 20 which includes the jack plug 10 having an inner conductor 31 surrounded by an insulator 30 and an outer conductor 29.
  • an electrical circuit is completed at the circuit modification means 20 by a cylindrical conductor 26 making contact with a cylindrical conducting piston 27 which is resiliently mounted as by being spring loaded by a conducting spring 28.
  • an electrical circuit is made via the negative of the battery 12 through the conducting spring 28, through the cylindrical conducting piston 27 and the cylindrical conductor 26 to the spring means 23.
  • the cylindrical conducting piston 27 is pushed away from the cylindrical conductor 26 which therefore breaks their direct electrical contact between the negative of battery 12 and the spring means 23.
  • the outer conductor 29 of the jack plug 10 is connected to the switch 13.
  • the other side of the switch 13 is connected to the negative of the battery 17 and the positive of the battery 17 is connected to the inner conductor 31 of jack plug 10.
  • the inner conductor 31 makes electrical contact with the cylindrical conducting piston 27 and the outer conductor 29 makes contact with the cylindrical conductor 26.
  • the insertion of the jack plug 10 reconfigures the circuit such that the battery 12 and the battery 17 are in series and power can only be supplied to the motor when both the contacts of the push button 3 and switch 13 are closed.
  • a further preferred feature of a tool embodying the invention is that of the motor used. This is designed and has features that are uncommon in power tools.
  • the generated electro-motive force (e.m.f.) in such motors when used as a generator, is proportional to the rate of rotation of the armature. This is because the induced e.m.f. in an armature coil is proportional to the rate of change of magnetic flux through the coil, which in turn is proportional to the angular velocity of the coil as it sweeps past the permanent magnet. As the armature rotates, the induced e.m.f. in each coil is intrinsically an A.C. signal containing sign reversals and maximum and minimum voltages (the minimum being zero volts) .
  • the position of brushes in contact with the motor's commutator which are also electrically connected to external terminals, are arranged so that the induced e.m.f. at the terminals is always of the same electrical polarity for a given armature rotation direction.
  • the r. p.m. of a free running motor is defined by the generated induced e.m.f. equalling the supplied voltage.
  • the r.p.m. is dependent upon the permanent magnet field, the geometry of the brushes, the armature and the supply e.m.f.
  • the rotational velocity of the ideal motor described above is independent of the electrical resistance of the armature windings, brushes and commutator.
  • the induced e.m.f. in the winding is approximately proportional to the number of turns on each coil for a given motor and armature r.p.m.
  • the free running r.p.m. is approximately inversely proportional to the number of turns per coil for a given supply voltage. That is the fewer the turns the greater the free running r.p.m.
  • the free running r.p.m. is proportional to the supply voltage.
  • dF k 3 V [(r, + k 2 n 2 /A) - n, 2n k 2 /A] dn [r, + k 2 n 2 /A] 2
  • a and r can be assumed constant, there is an optimum number of turns which is a function of the internal resistance of the supply plus commutator and brushes. Note that this optimum is not a function of supply voltage. This maximizes the torque at heavy loads for given internal supply resistance and given brushes and commutator. In general this is approximately true of the torque per battery output power as well at high loads, so long as no magnetic saturation occurs.
  • the current drain is approximately;
  • V( 1 -rpm/rpmf ree) /R V( 1 -rpm/rpmf ree) /R
  • the power is approximately proportional to rpm V(l-rpm-rpmfree)/R, where V is the supply voltage, m is the angular velocity and ⁇ mfree is the free running angular velocity for supply voltage V.
  • V and R should be chosen to not allow too much saturation or excessive heating to occur.
  • motors of improved efficiencies for heavy, low speed operation can be designed and manufactured by taking properly into account the assisted output speed of the motor which is often considerably less than the free r.p.m. and less than speed for other typical applications of such small motors.
  • the free r.p.m. is proportional to 1/n, hence this determines the number of windings (turns) per armature pole-piece.
  • n it is preferable to select the thickest wire gauge that can be wound upon the armature.
  • the maximum thickness of wire gauge set by the available slot area. Note that in practice consideration of magnetic saturation due to armature reaction and of demands upon power supplies should be taken into account in selecting n..
  • the increasing turns per coil will improve the motor's performance when fed from a small battery. This is basically because the torque is proportional to the number of turns for a given current. Hence the more turns, the smaller the battery current drain required to produce a given torque. Also, the smaller this current, the smaller the power inefficiency losses from the internal resistance of the battery and resistive losses of the brushes, armature and conductors feeding the motor via the switch.
  • the increasing number of turns in order to provide improved operation. This is related to the effect on the current drawn from the battery when the armature resistance becomes significant in comparison with the battery source output and to reductions in space factor in the slots caused by increasing ratio of wire insulation cross-section to copper cross-section. There is hence a range of turns which are suitable for a specific application.
  • the motor with 125 turns per coil of 0.28mm wire diamter illustrates that once the number of turns per coil is determined then the thickest wire gauge that can be used improves the efficiency of the motor. Furthermore, small D.C. motors having a small number of turns and thick windings tend to be inefficient at maximum output power. (This inefficiency may be due to excessive armature reaction and/or to high IR losses in the coils and brushes at the maximum output point.
  • the motor was dynomometer mounted and its output power was calculated by multiplying the speed in radions/sec by the torque as measured by means of a digital force meter attached to the dynomometer' s torque arm.
  • the Johnson HC683G motor, as sold, has 22 turns of 0.9mm diameter wire per coil.
  • the Johnson HC615L motor has 22 turns of 0.9mm diameter wire per coil.
  • the Johnson HC783G as sold has 24 turns of 0.9mm diameter wire per coil.
  • the motor illustrated in Fig.2 is a D.C. permanent magnet motor with a U-shaped pole configuration motor as sold has 9 turns per coil of 0.9mm diameter per coil and each coil is wound around 3 teeth.
  • capacitors can be connected across each coil (if required) .
  • This offers the additional advantage of substantially reducing radio frequency interference. This is not achievable with motors currently used for example in commercially available power tools. With such tools the excessive currents required by the armature constraints on the capacitor's physical size do not readily allow for effective capacitors to be connected across each coil.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Dc Machiner (AREA)

Abstract

Cette invention concerne un outil (1) à moteur qui dans la forme de réalisation présentée est portable, autonome et comporte un commutateur (3) à bouton-poussoir et un système d'alimentation électrique se présentant sous forme de dix piles rechargeables (12) à 1,2 volt pouvant être rechargées à l'aide d'une prise (4) de recharge. Un moteur (5) entraîne un train d'engrenages (6) qui fait tourner un mandrin (7). Le mandrin est fixé sur un axe et on peut enlever le mandrin de l'axe de manière à pouvoir introduire directement un tournevis dans l'axe plutôt que le tournevis soit bloqué par le mandrin (7). Le commutateur (3) à bouton-poussoir est conçu pour se mouvoir dans une fente (34). Lorsque le commutateur (3) à bouton-poussoir se situe au centre de la fente (34), comme dans la figure, aucune puissance électrique ne peut s'appliquer sur le moteur (5) si on appuie sur le commutateur (3) à bouton-poussoir. Cependant lorsque le commutateur (3) à bouton-poussoir se trouve en position haute dans la fente (34), le moteur (5) tourne dans le sens horaire, et lorsqu'il se trouve en position basse dans la fente (34) le moteur (5) tourne dans le sens inverse.
PCT/GB1993/002293 1992-11-06 1993-11-08 Outil a moteur Ceased WO1994011162A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU54277/94A AU5427794A (en) 1992-11-06 1993-11-08 A power tool
PCT/AU1994/000257 WO1994028613A1 (fr) 1993-05-20 1994-05-19 Moteur cc a aimants permanents alimente par batterie
AU67178/94A AU6717894A (en) 1993-05-20 1994-05-19 Battery powered permanent magnet direct current motor

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AUPL5717 1992-11-06
AUPL571692 1992-11-06
AUPL571792 1992-11-06
AUPL5716 1992-11-06

Publications (1)

Publication Number Publication Date
WO1994011162A1 true WO1994011162A1 (fr) 1994-05-26

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Family Applications (1)

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PCT/GB1993/002293 Ceased WO1994011162A1 (fr) 1992-11-06 1993-11-08 Outil a moteur

Country Status (1)

Country Link
WO (1) WO1994011162A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0716904A1 (fr) * 1994-12-15 1996-06-19 Gerd Eisenblätter GmbH Meuleuse portative sans fil
US20090229842A1 (en) * 2008-03-07 2009-09-17 Rick Gray Battery pack for use with a power tool and a non-motorized sensing tool
CN104868657A (zh) * 2014-02-20 2015-08-26 英古所连公司 具有可重新配置次级开关的动力工具
AU2012251937B2 (en) * 2011-11-16 2016-10-20 Gyrus Medical Limited Surgical Instrument
EP4352833A1 (fr) 2021-05-24 2024-04-17 Spear Power Systems, Inc. Commutateur et système de batterie

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US4050003A (en) * 1974-08-23 1977-09-20 The Black And Decker Manufacturing Company Modular cordless tools
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EP0280527A2 (fr) * 1987-02-24 1988-08-31 Yang Tai-Her Outil électrique à main à éléments composables
DE3742268A1 (de) * 1987-12-12 1989-06-22 Licentia Gmbh Elektrowerkzeug mit einer einrichtung zur aufnahme und halterung von batterie-packen im und/oder am werkzeuggehaeuse
GB2226716A (en) * 1988-12-28 1990-07-04 Metabowerke Kg Electrical handtool with power supply independent of the mains
EP0528478A1 (fr) * 1991-08-09 1993-02-24 Skil Nederland B.V. Outil motorisé sans fil

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0716904A1 (fr) * 1994-12-15 1996-06-19 Gerd Eisenblätter GmbH Meuleuse portative sans fil
US20090229842A1 (en) * 2008-03-07 2009-09-17 Rick Gray Battery pack for use with a power tool and a non-motorized sensing tool
US8251157B2 (en) * 2008-03-07 2012-08-28 Milwaukee Electric Tool Corporation Battery pack for use with a power tool and a non-motorized sensing tool
US8851200B2 (en) 2008-03-07 2014-10-07 Milwaukee Electric Tool Corporation Battery pack for use with a power tool and a non-motorized sensing tool
US9196881B2 (en) 2008-03-07 2015-11-24 Milwaukee Electric Tool Corporation Battery pack for use with a power tool and a non-motorized sensing tool
AU2012251937B2 (en) * 2011-11-16 2016-10-20 Gyrus Medical Limited Surgical Instrument
CN104868657A (zh) * 2014-02-20 2015-08-26 英古所连公司 具有可重新配置次级开关的动力工具
US9701006B2 (en) 2014-02-20 2017-07-11 Ingersoll-Rand Company Power tools with reconfigurable secondary switch
CN104868657B (zh) * 2014-02-20 2017-08-04 英古所连公司 具有可重新配置初级开关和次级开关的动力工具及配置方法
EP4352833A1 (fr) 2021-05-24 2024-04-17 Spear Power Systems, Inc. Commutateur et système de batterie
EP4352833A4 (fr) * 2021-05-24 2025-04-02 Blue Origin Alabama, LLC Commutateur et système de batterie

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