EP3977494A1 - Schalter für eine hand-werkzeugmaschine - Google Patents
Schalter für eine hand-werkzeugmaschineInfo
- Publication number
- EP3977494A1 EP3977494A1 EP20727627.0A EP20727627A EP3977494A1 EP 3977494 A1 EP3977494 A1 EP 3977494A1 EP 20727627 A EP20727627 A EP 20727627A EP 3977494 A1 EP3977494 A1 EP 3977494A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switch
- actuating
- housing
- switch according
- switching
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H15/00—Switches having rectilinearly-movable operating part or parts adapted for actuation in opposite directions, e.g. slide switch
- H01H15/22—Switches having rectilinearly-movable operating part or parts adapted for actuation in opposite directions, e.g. slide switch having a single operating part protruding from different sides of switch casing for alternate actuation from opposite ends
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/20—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch wherein an auxiliary movement thereof, or of an attachment thereto, is necessary before the main movement is possible or effective, e.g. for unlatching, for coupling
-
- 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
- H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
- H01H13/52—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state immediately upon removal of operating force, e.g. bell-push switch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/02—Details
- H01H19/04—Cases; Covers
- H01H19/06—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
- H01H19/065—Casings hermetically closed by a diaphragm through which passes an actuating member
-
- 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
- H01H2009/065—Battery operated hand tools in which the battery and the switch are directly connected
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
Definitions
- the invention relates to a switch for a hand machine tool or as part of a hand machine tool, which has a switchable by the switch ble electric drive motor, the switch having a switch housing se with a switch chamber, in which a switching element for actuating an electrical see between at least two switching positions adjustable switch actuator is arranged, which is movably coupled to an actuating element of the switch that is arranged outside the switch housing and adjustable between at least two actuating positions by means of a transmission element, the transmission element penetrating a passage opening on a wall of the switch housing, so that the switching actuator through Ver position of the actuating element for actuating the switching element is adjustable.
- Such a switch is described in EP 2 395 527 A1.
- the switch has egg NEN magnetic transmitter as a switch actuator, which is received in a switch chamber of the switch housing. By pressing the Actuate transmission element, the switching actuator is displaceable in order to turn on the drive motor in this way and to change its speed.
- a separate switching element is provided, which also works magnetically.
- the magnetic switch actuator of the direction of rotation switch tends to attract ferromagnetic dust, chips and the like, so that the
- Hand machine tool can no longer be used. It is therefore the object of the present invention to provide an improved switch for a hand machine tool and one equipped with it
- a switch of the type mentioned at the outset provides that a rotary bearing is arranged on the passage opening, on which the transmission element is rotatably mounted about an axis of rotation.
- the pivot bearing enables, for example, a configuration of the switch as a direction of rotation switch, i.e. that with the adjustment of the
- Switching actuator the direction of rotation of the drive motor can be predetermined, for example clockwise or counterclockwise rotation of a tool holder
- the pivot bearing is designed as a plain bearing.
- the pivot bearing can also comprise a roller bearing, for example a ball bearing or roller bearing.
- the pivot bearing is preferably part of the passage opening or a part of the wall on which the passage opening is arranged.
- the passage opening itself is designed as a bearing receptacle for the actuating element.
- the or a pivot bearing supporting the actuating element about its axis of rotation can, however, also be arranged directly next to the passage opening.
- the pivot bearing can comprise a roller bearing or sliding bearing, which is designed as a pivot bearing that is separate from the wall on which the passage opening is arranged, or as a separate component.
- the passage opening itself cannot be configured as a rotary bearing for the actuating element, for example. Nevertheless, it is also advantageous in this scenario if the actuating element penetrates the passage opening, but is sealed off at the passage opening. It is preferred that the axis of rotation penetrates the wall on which the pivot bearing is arranged.
- the axis of rotation runs parallel to a side wall surface of the wall, that is, the pivot bearing is net angeord directly in the wall, but has an axis of rotation that is parallel to the wall of the switch housing for example and runs in the wall.
- the axis of rotation is angled, in particular at right angles, to a wall surface of the wall on which the pivot bearing is arranged.
- the axis of rotation it is also readily possible for the axis of rotation to be at an oblique angle, i.e. is not perpendicular to the wall surface.
- the transmission element is designed as a shaft element or has a shaft section which is rotatably mounted in the rotary bearing about the axis of rotation which angularly penetrates the wall surface.
- a preferred concept provides that the switch chamber is closed, with the exception of the passage opening in which the pivot bearing is received or which forms the pivot bearing.
- the transmission element therefore closes the passage opening or is accommodated in the passage opening in a sealing manner.
- the switch chamber houses the switch actuator tightly, so that environmental influences, for example dust, in particular ferromagnetic dust, cannot penetrate into the switch housing and / or into the switch chamber in which the switch actuator is arranged.
- contours for securing displacement or a securing device for displacement are preferably provided for a non-displaceable hold of the transmission element parallel to its axis of rotation or along the axis of rotation.
- the transmission element is preferably held in a non-displaceable manner with respect to its axis of rotation at the passage opening.
- the shift lock or the shift lock contours include, for example, an arrangement in interlocking positive locking contours, one positive locking contour being arranged on the transmission element and the other positive locking contour being arranged on the passage opening or the wall of the switch housing with the passage opening.
- the form-fit contours preferably allow the over- support element around its axis of rotation and / or store the transmission element around its axis of rotation and / or form a component of the pivot bearing arranged on the passage opening.
- the anti-displacement contours include, for example, an annular flange that extends partially or completely annularly about the axis of rotation and engages in a partially annular or completely annular annular groove.
- the ring flange can be arranged on the transmission element, the ring groove on the passage opening.
- the annular flange it is also possible for the annular flange to be arranged at the passage opening, i. H. for example protrudes radially inward into the passage opening, while the annular groove is arranged on the transmission element.
- the annular flange can comprise two or more partially annular flange sections, between which angular distances are provided with respect to the axis of rotation.
- annular flange is, for example, disk-shaped.
- the ring flange and / or the ring groove are preferably integral with the transmission element.
- the annular flange and the annular groove can, for example, be components of the seal explained below.
- the annular flange and the annular groove advantageously form part of a labyrinth seal.
- the annular flange and the annular groove do not have a sealing function, for example if they are only partially annular.
- a log device is preferably arranged on the passage opening and / or on the pivot bearing. It is preferred if the pivot bearing and / or the passage opening is designed as a seal or has a seal.
- components of a labyrinth seal can also be components of the rotary bearing or the passage opening.
- complementary components to the seal for example also components of a labyrinth seal, are arranged on the transmission element.
- the seal can for example be a sliding seal in the manner of a slide bearing, comprise an O-ring or the like.
- the seal surrounds the transmission element in an annular manner.
- the seal comprises a sealing flange which engages in an annular seal receptacle.
- the sealing flange is arranged, for example, on the transmission element, while the annular seal receptacle is arranged on a bearing receptacle of the pivot bearing.
- the rotary bearing it is also possible, however, for the rotary bearing to have an annular sealing flange which protrudes radially inward towards the transmission element and which engages in an annular seal receptacle on the transmission element.
- An O-ring is also suitable as a sealing flange.
- an O-ring or another rubber seal or elastic seal to be arranged on a sealing flange.
- the seal comprises a labyrinth seal or is formed by it.
- the aforementioned sealing flange can be designed in the manner of a labyrinth seal. It is preferred if only a labyrinth seal and no elastic seal is provided between the transmission element and the passage opening.
- the labyrinth seal can also form a plain bearing or form part of a plain bearing. As a result, for example, a low level of wear can be achieved when the transmission element rotates in the pivot bearing or plain bearing.
- the actuating element which drives or actuates the rotatable transmission element is preferably mounted in translation on a sliding bearing with respect to the Wegge housing.
- the sliding bearing can be part of the switch housing or be arranged on the switch housing. It is preferred if the sliding bearing is provided on the machine housing of the hand machine tool.
- a Transmission gear arranged between the switch and the actuating element, in particular between the transmission element and the actuating element.
- a transmission gear is arranged between the transmission element and the switching actuator.
- the transmission gear can be arranged entirely or partially within the switch housing, in particular within the switch chamber. However, the transmission gear is preferably arranged entirely or completely outside of the switch housing. Thus, for example, only a portion of the transmission element and the switching actuator are arranged within the switch housing or the switch chamber.
- the transmission gear is preferably designed or provided to translate a linear movement or translational movement of the actuating element into a rotational movement of the switching actuator. Such a translation can be done for example using a wedge gear or Schräglflä chengetriebes.
- a toothed gear, in particular a combination of rack and gear, can also perform the aforementioned function.
- a rack or a rack section is arranged on the actuating element, which meshes with a gear or a circumferential tooth voltage on the transmission element.
- the transmission gear includes a crank gear or is formed by it.
- the transmission gear preferably has a drive section that is coupled to the actuation element and / or driven by the actuation element, and an output section that drives the switch actuator or carries the switch actuator.
- the drive section and / or the output section are preferably arranged on the transmission element.
- the transmission element has the drive section and the output section in one piece.
- the transmission element is designed as a crankshaft element or a crankshaft or is rotatably connected or permanently coupled to a crankshaft.
- the transmission element has a Shaft section which is rotatably mounted on the passage opening of the switch housing.
- a crank arm projects at an angle, in particular at right angles, from the shaft section.
- an actuating arm is advantageously angled, in particular at right angles.
- the shaft section and the actuating arm preferably run parallel to one another or have longitudinal extensions running parallel to one another.
- the shaft section, the crank arm and the actuating arm form, for example, a stepped contour or run in steps in a side view.
- the shaft section engages in the switch housing and / or penetrates the passage opening.
- the shaft section is, for example, on opposite sides in front of the through opening. It is also advantageous if there is at least one seal on the shaft section to seal the shaft section on the switch housing and / or one of the anti-slip contours and / or at least one of the ring groove or ring flange for engaging another ring groove or ring flange on the switch housing, in particular are arranged on the passage opening.
- the transmission element has a shaft section which protrudes freely in front of the wall or side wall of the switch housing that has the passage opening into a switch chamber of the switch housing delimited by the wall or side wall.
- the aforementioned seal and / or one of the Verschiebe Anlagenskontu ren and / or a partially annular or completely annular extending annular flange and / or a partially annular or completely annular groove is advantageously arranged on the shaft section.
- the at least one partially annular or annular annular flange of the shaft section engages in an annular groove on the passage opening, while the annular groove on the shaft section engages with a projection protruding radially to the axis of rotation, for example an annular flange, on the passage opening.
- a shaft section is provided.
- the switching actuator is preferably arranged on the shaft section.
- One to turn-actuate the transmission element the axis of rotation provided and arranged on the shaft section
- Actuate supply arm or crank arm of the transmission element is preferably further with respect to the axis of rotation radially from the shaft section than the switching actuator.
- the switch actuator is, for example, a contactless switch transmitter, in particular a magnetic transmitter or magnet.
- the transmission gear deflects a linear direction of movement of the actuating element in a first direction into a linear adjustment of the switching actuator in a second direction different from the first direction, for example, angled to the first direction, in particular perpendicular direction.
- no blocking contours are preferably arranged with which, when an actuating element is in a predetermined actuating position, that other actuating element can be blocked.
- the transmission element is preferably both on the pivot bearing, which is arranged on the wall of the switch housing, and also in a Lzanab stood with respect to the axis of rotation on the switch housing, for example on a wall of the switch housing opposite the passage opening. It is advantageous if the transmission element is mounted rotatably with respect to its axis of rotation on opposing walls of the switch housing.
- the switch not only has the aforementioned actuation element and the switch actuator, but that the actuation element has a first actuation element and the switch actuator a first
- Form switching actuator for actuating the switching element, which is a first switching element.
- the switch also has a second actuating element, which is arranged outside the switch housing and can be adjusted between at least two actuating positions, and a second switching actuator, which can be actuated by the second actuating element, for actuating a second electrical switching element.
- the switch can therefore perform a second function on the basis of the second switching actuator and the second electrical switching element.
- the second actuation element is coupled in movement to the second switch actuator, preferably by means of a second transmission element which penetrates a second passage opening on a wall of the switch housing. This wall can be the same wall on which the transmission element of the first switching actuator is rotatably mounted.
- the second transmission element can also be mounted rotatably with respect to the switch housing. However, it is preferred if the second transmission element is mounted linearly along a sliding axis with respect to the switch housing.
- the second transmission element penetrates the passage opening in a linearly displaceable manner along a sliding axis, for example is mounted displaceably on the passage opening. It is particularly preferred if the sliding axis is parallel to the axis of rotation of the first switching actuator.
- the drive motor can be switched on and / or switched off and / or its speed can be changed.
- actuating elements are arranged on the same side of the scarf tergeophuses. Both actuating elements can thus be actuated by an operator from the same side.
- the axis of rotation of the first transmission element and the sliding axis of the second transmission element enclose an angle of less than 90 °, in particular less than 60 °, particularly preferably less than 30 °, to one another.
- the axis of rotation of the first transmission element and the sliding axis of the second transmission element are parallel to one another or run parallel to one another.
- At least one of the actuators or both actuators Wei sen appropriately blocking contours to block the other Actuate transmission element.
- the actuating elements and / or the blocking contours of the actuating elements are designed for mutual blocking. For example, it is possible that one of the actuation elements in a predetermined actuation position, for example an intermediate actuation position, blocks actuation of the other actuation element from a first actuation position into a second actuation position.
- the sliding actuating element when it is moved from its non-actuated starting position to an actuating position, blocks actuation of the first actuating element so that, for example, a direction of rotation of the drive motor cannot be switched when the drive motor is already running running.
- the actuating element for the direction of rotation preferably the first actuating element, only allows actuation of the second actuating element with which, for example, the drive motor can be switched on when the first actuating element is in a defined first or second actuating position stands, but not in an intermediate position between the first and second actuation positions.
- clockwise or counterclockwise rotation of the drive motor can be set with the first actuating element.
- the blocking contours are preferably arranged directly on the respective actuating element, in particular its actuating body or actuating housing.
- the switch chamber accommodating the first switch actuator expediently forms a first switch chamber.
- the second switch actuator is arranged in a second switch chamber separate from this first switch chamber.
- both switch actuators are arranged in separate switch chambers.
- the bulkhead wall can for example be connected to the side walls or peripheral walls of the switch housing.
- first switch chamber is sealed off from the second switch chamber.
- sealing contours, sealing projections or the like are provided which engage one another and seal and separate the switch chambers from one another. It is advantageous if at least one labyrinth seal and / or an elastic seal or rubber seal is provided between the first and the second switch chamber.
- the second switch chamber is expediently closed or sealed with the exception of the second passage opening or the bearing opening for the second transmission element.
- the first and / or second switch chamber is surrounded by peripheral walls, each with a bottom wall and a top wall.
- a seal is preferably arranged, for example a ring seal, an O-ring or the like.
- the sealing measures already mentioned in connection with the first transmission element namely, for example, a sealing flange that engages in an annular seal receptacle, are easily possible with the second transmission element.
- a latching arrangement, Klemmanord voltage or other fixing arrangement for latching or fixing at least one switching actuator in a predetermined switching position is advantageous.
- the first actuating element or a component coupled to the first actuating element can be latched using the latching arrangement or fixing arrangement, in particular in order to fix a specified direction of rotation of the switch.
- the spring arrangement or latching arrangement can act directly on the switching actuator, but also on the actuating element that actuates the switching actuator.
- At least one switch actuator preferably both switch actuators, are designed as magnets or have a magnetic transmitter and / or a contactless switch transmitter, e.g. a capacitive or optical transmitter, or are designed in this way.
- a contactless switch transmitter e.g. a capacitive or optical transmitter
- the switch actuator can also, for example, actuate electrical contacts, for example between a switch-on position or a switch-off position.
- At least one of the electrical switching elements is expediently arranged outside of the switch housing and / or on a circuit board.
- the circuit board expediently forms part of an energizing device for energizing the drive motor of the hand machine tool.
- one or more switching elements that can be actuated by the switch can already be arranged on the circuit board.
- the switch can therefore have the switching element, but does not have to. It is sufficient if the switching element is part of the circuit board, while the at least one switching actuator is part of the switch according to the invention.
- the one or more electrical switching elements that can be switched by the switch are advantageously arranged on a circuit board, the respective Druckele element preferably being arranged like a sand wich between the switch housing and the circuit board.
- the circuit board is encapsulated with the switch housing using a potting compound.
- the switch housing or the switch has sealing projections which protrude towards the printed circuit board and limit a receiving capacity for the respective switching element. It is thus possible, for example, for the potting compound not to flow as far as the switching element, but rather to be held outside the cavity for the switching element by the sealing protrusions, so to speak.
- the invention also relates to a hand machine tool with a switch as described above.
- a hand machine tool according to the invention is preferably one
- Hand machine tools can easily be configured with the switch according to the invention, in particular those hand machine tools in which a direction of rotation of the drive motor can be specified using the switch according to the invention, for example clockwise or counterclockwise rotation.
- the switch housing is preferably in two parts and / or has housing shells which match one another and which delimit one or more switch chambers when they are arranged next to one another.
- the switch housing comprises a housing bottom part which is covered by a housing cover. Side walls protruding in the direction of the respective other part can be provided on the housing bottom part and the housing cover. Between the two housing parts, the housing bottom part and the housing cover, a seal is provided vorzugswei se.
- the housing parts that is to say the housing base part and the housing cover, can complementarily limit a passage opening or Lageröff voltage for one or both of the aforementioned transmission elements.
- Figure 1 is a side view of a hand machine tool with a switch, the machine housing is open,
- FIG. 2 shows a plan view of a power supply device and the switch of the hand machine tool according to FIG. 1
- FIG. 3 shows a side view of the switch according to the preceding figures with the switch housing open and the second actuation element or switch-on element not actuated
- 4 shows the view according to FIG. 3, but with the first actuating element actuated in the switched-on position
- Figure 5 is a perspective oblique view of the switching element according to the preceding figures, the second actuating element is in a neutral confirmation position,
- FIG. 6 shows the view according to FIG. 5, but with the actuating element displaced into a first actuating position assigned to counter-clockwise rotation of the drive motor of the hand machine tool according to FIG.
- FIG. 7 shows the view according to FIGS. 5 or 6, but with the second actuating element which is adjusted into a second actuating position assigned to clockwise rotation of the drive motor
- FIG. 8 shows a section through the switching element according to the preceding figures along a section line A-A in FIG. 3 corresponding to the actuation position according to FIG. 5,
- FIG. 9 shows the section according to FIG. 8, but in the actuation position according to FIG
- FIG. 10 shows the section according to FIGS. 8, 9, but with the first actuating element displaced into the actuating position according to FIG.
- Figure 1 1 is an exploded view of the switch according to the above Figu ren and
- Figure 12 is a perspective oblique view of the switch according to the projecting figures obliquely from above.
- a Fland machine tool 10 has a machine housing 1 1, in wel chem a drive train 15 with a drive motor 16 is arranged.
- the drive train 15 is located in a drive section 12, of which a handle section tie 13 protrudes for gripping or changing by an operator.
- the handle part 13 is, for example, in the manner of a pistol handle from the drive part 12 at an angle, in particular at an angle of about 80-90 °.
- the drive motor 16 could directly drive an output element 19 with a corresponding tool holder in which, for example, a screwdriver bit, a drill or the like can be accommodated.
- a gear 17 is connected between the drive motor 16 and the output element 19.
- a control module 20 which includes a current supply device 21.
- the control module 20 is essentially located in the handle section 13. It should also be noted with regard to the machine housing 11 that only the other housing part 14 at the rear is shown in the drawing, while a complementary, the interior of the machine housing 11 together with the housing part 14 shown the closing housing part is not visible in the drawing.
- the energization device 21 comprises a plate 22 on which various electronic and electrical components (not visible in the drawing) for controlling the drive motor 16, in particular for energizing it, are arranged.
- switching elements 23 and 24, for example magnetic sensors are shown schematically. With the switching element 23, for example, the energization device 21 and thus the drive motor 16 can be switched on or off.
- a speed of the drive motor 16 can be specified with the switching element 23.
- the switching element 23 can also be referred to as an accelerator switching element.
- a direction of rotation of the drive motor 16 can be set, for example clockwise or counterclockwise rotation.
- the energizing device 21 is connected or connectable to the drive motor 16, in particular its excitation coils (not shown in more detail in the drawing) of an excitation coil arrangement by means of lines 25.
- the drive motor 16 is, for example, a brushless mo- gate or electric commutated motor.
- the use of a switch 30, with which the switching elements 23 and 24 can be switched, with a universal motor or other electric motor would also be readily possible.
- the energizing device 21 is connected or can be connected to a supply interface 28 by means of lines 26, via which the
- Hand machine tool 10 can be supplied with electrical energy.
- an electrical supply line e.g. a power cord can be provided for connection to an electrical supply network, for example with 110 volts or 230 volts alternating voltage.
- the hand machine tool 10 is a hand machine tool that can be operated wirelessly.
- the supply interface 28 is used to connect a schematically indicated electrical energy store 29, for example a battery pack. Electrical energy stored in the energy store 29 is used to supply the current supply device 21 and thus the drive motor 16.
- the switch 30 comprises actuating elements 31 and 32 with which the switching elements 23 and 24 can be actuated.
- the drive motor 16 can accordingly be switched on and off and its speed can be influenced, while the actuating element 32 is provided for specifying the direction of rotation of the drive motor 16.
- the switch 30 has a switch housing 33 in which mutually separate switch chambers 34 and 35 are provided.
- the switch housing 33 comprises a housing bottom part 36 which is closed by a housing cover 37. Both switch chambers 33 and 34 are closed on the circumference with the exception of passage openings 53, 54 on side walls 51, 52 of switch chambers 34 and 35. Between the switch chambers 34 and 35 there is also a bulkhead 42 which separates the switch chambers 34 and 35 from one another.
- the housing bottom part 36 and the housing cover 37 form mutually complementary and the switch chambers 34, 35 closing housing parts 36A, 37A.
- the housing bottom part 36 has a bottom wall 45, from which peripheral walls 46 protrude.
- the housing cover 37 has a top wall 47 from which peripheral walls 48 protrude.
- the end faces of the peripheral walls 46, 48 and the bulkhead 42 forming wall sections of the housing bottom part 36 and the housing cover 37 are opposite each other with their end faces.
- sealing projections 38, 39 for delimiting the switch chambers 34, 35 and, complementary thereto, sealing receptacles 40, 41 into which the sealing projections 38, 39 seal engage and thus form seals 38A, 39A are provided.
- the seals 38A, 39A seal the switch chambers 34, 35 from one another and from the environment.
- the sealing projections 38, 39 are designed, for example, in the manner of springs which engage in the sealing receptacles 40, 41 designed as receiving grooves.
- sealing projections 38, 39 together with the sealing receptacle 40, 41 form, for example, labyrinth seals.
- sealing receptacles could also be provided, in which, for example, a rubber seal, in particular in the form of an O-ring, egg ner sealing lip, is inserted.
- the sealing projections 38, 39 can also be configured as elastic sealing projections or rubber sealing projections. It is particularly advantageous that the switch chambers 34 and 35 are sealed against one another and / or are tightly separated from one another by the seals 38A, 39A.
- the seals 38A, 39A comprise a Dichtab section 38B, for example in the manner of a labyrinth seal, which extends along a region 35A at which the switch chambers 34 and 35 directly adjoin one another.
- the sealing section 38B comprises sections of the sealing projections 38, 39 and sealing receptacles 40, 41, which interlock in the manner of labyrinth seals.
- the two switch chambers 34, 35 are sealed by a Dichtungsanord voltage on the one hand from the environment, but on the other hand also relative to each other.
- Switching actuators 65, 75 received in the interiors of the switch chambers 34, 35 are therefore protected from environmental influences.
- the housing bottom part 36 and the housing cover 37 are locked together using a Rastan arrangement.
- latching projections 43 in particular latching hooks or the like, which engage in latching receptacles 44 of housing cover 37, are provided on housing bottom part 36.
- the locking projections 43 and locking receptacles 44 form a locking arrangement 43A and are provided, for example, in the area of the peripheral walls 46, 48.
- a plurality of locking projections and locking receptacles arranged at a distance from one another are preferably provided so that the housing cover 37 is held firmly on the housing bottom part 36.
- a gluing, welding or other similar connection of the housing bottom part 36 and the housing cover 37 would also be possible, so that these two parts are held firmly to one another and the switch chambers 34, 35 are sealed.
- line receptacles 49 are advantageously provided, which are suitable for receiving lines, in particular special lines 25.
- the switch housing 33 is supported on the circuit board 22 by means of support feet 50.
- the support feet 50 is between the bottom wall 45 and the circuit board 22 is given a spacing at which the switching elements 23, 24, for example semiconductor components, are arranged in a sandwich-like manner.
- the bottom wall 45 is in contact with the switching elements 23, 24, for example rests flat on the upper side thereof facing the switch 30. But it is also possible that there is a distance between the bottom wall 45 and the switching elements 23, 24.
- From the bottom wall 45 is preferably a sealing projection 51A in the direction of the circuit board 22, which delimits an interior space in which the switching element 23 and / or the switching element 24 are arranged.
- the switch housing 33 is namely advantageously cast with the conductor body 22 by means of a potting compound 27A, which is held back by the sealing projection 51 A, so that the switching elements 23, 24 do not come into contact with the potting compound 27A, but rather in a way through the potting compound 27A, so to speak.
- the bottom wall 45 and the circuit board 22 closed cavity are taken up.
- the potting compound 27A forms a potting body 27 which holds the switch housing 33 on the circuit board 22 and preferably electrical construction parts that are arranged on the circuit board 22, protects against environmental influences.
- the actuating element 31 is connected to the switching actuator 65 by means of a transmission body 60.
- the switching actuator 65 comprises, for example, a magnet or is formed by a magnet 65A, through whose action the switching element 23 can be actuated.
- the transmission element 60 forms part of a sliding guide or a sliding bearing 60A.
- the transmission element 60 has a shaft section 61 which is connected to a holding section 62, for example a holding projection, with the actuating element 31, for example in a holding receptacle 31A, in particular a plug receptacle, of the same.
- the transmission element 60 is from Actuate transmission element 31 in the direction of the switch housing 33 and engages in this.
- a slide 63 is arranged, which is guided linearly with respect to a sliding axis S in a slide guide 57.
- the slide guide 57 is provided in the switch chamber 34, so that the slide 63 with respect to the sliding axis S or along the sliding axis S in the switch chamber 34 is taken on.
- the slide guide 57 comprises, for example, a guide projection 57A and a guide receptacle 57B on the slide 63 and the switch chamber 34.
- the sliding axis S and the axis of rotation D are parallel to one another.
- the switching actuator 65 for example a magnet, is arranged on the slide 63.
- a relative position of the switching actuator 65 with respect to the switching element 22 can be set so that it assumes different switching positions. If, for example, starting from an actuating position A, which corresponds to a switch-off position, the actuating element 31 is actuated in the direction of an actuating position E, i.e. a switch-on position (FIG. 4), the magnetic field of the switching actuator 65 actuates the switching element 23, for example to switch on the drive motor 16 or switch off or change its speed.
- An advantageous measure provides that when actuating element 31 is actuated for the first time from actuating position A in the direction of actuating position E, switching element 23 is, so to speak, woken up and the other components of energizing device 21 are activated. If the switching element 31 remains unactuated for a predetermined time, that is to say it assumes the actuating position A, the switching element 23 switches off the Fland machine tool 10 or its electronic components, in particular the energizing device 21, so it enters a kind of sleep mode so that the electrical Energy consumption is minimal or even switched off.
- the switching actuator 65 is spring-loaded in the direction of the actuating position A by a spring arrangement 64A with a spring 64 which is supported on a side opposite to the passage opening 53, namely on a support 58.
- a spring arrangement 64A with a spring 64 which is supported on a side opposite to the passage opening 53, namely on a support 58.
- a seal 66 is preferably arranged at the passage opening 53, which at the same time represents a bearing receptacle of a Schiebela gers for the transmission element 60.
- the seal 66 for example a sealing ring, in particular a sealing ring made of foam and / or an O-ring, is penetrated by the transmission element 60 and lies against its outer periphery in a sealing manner.
- a seal receptacle 55 for example an annular groove, is provided for the seal 66, in which the seal 66 is received.
- the housing bottom part 36 and the housing cover 37 have in the area of the side wall 51 Operaab sections 67A, 67B of a bearing receptacle 67 or the passage opening 53.
- the transmission element 60 is linearly guided with respect to the sliding axis S.
- the bearing receptacle 67 comprises, for example, sleeve-shaped subsections 67A, 67B arranged on the housing bottom part 36 and the housing cover 37.
- a transmission element 70 which is rotatably superimposed on the switch housing 33 about an axis of rotation D GE.
- the transmission element 70 has a shaft section 71 which is located essentially within the switch chamber 35 and penetrates a passage opening 54 on the side wall 52 of the switch chamber 35 or on the switch housing 33.
- the passage opening 54 also forms a bearing receptacle of a pivot bearing 77 on the side wall 52.
- sleeve-shaped sections 79A, 79B of the bearing receptacle 79 or the passage opening 54 are provided on the housing base part 36 and on the housing cover 37.
- the shaft section 71 is rotatably mounted on a bearing receptacle 59 of a rotary bearing 59A.
- a bearing receptacle 59 for example, support sections or wall sections 59B are in front of a wall section of the peripheral walls 46 and / or a wall section of the peripheral walls 48.
- the switching actuator 75 for example a magnet 75A, is arranged between the bearing seat 59 and the rotary bearing 77 on the shaft section 71, for example a seat 73, with which the switching element 24 can be actuated.
- the switch actuator 75 adjusts between switch positions that are assigned to egg nander opposite directions of rotation of the drive motor 16, for example clockwise and counterclockwise rotation.
- the actuating element 32 which is designed, for example, as a sliding element, occupies actuating positions R and L.
- the actuating element 32 is mounted on the machine housing 11 along an adjusting axis BS.
- the machine housing 11 has, for example, a Lagerauf acquisition 95 on which the actuating element 32 is mounted displaceably with respect to the adjusting axis BS.
- actuating position R for example, an actuating section 96 of the actuating element 32 protrudes further from one side of the machine housing 11 than an actuating section 97 of the actuating element 32 protrudes from the other, opposite side of the machine housing 11.
- the operator therefore presses on one of the actuating sections 96 or 97 in order to actuate the actuating element 32 from the actuating position R into the actuating position L or vice versa.
- a transmission gear 80 is provided to transfer the linear movement of the actuating element 32 along the adjusting axis BS into a rotary movement of the transmission element 70 about the axis of rotation D.
- the transmission gear 80 is, for example, a crank mechanism 81.
- a crank arm 72 protrudes from the shaft section 71 of the transmission element 70 at an angle, in particular at right angles. From the crank arm 72, in turn, an actuation arm 74 projects at an angle, the actuation arm 74, the crank arm 72 and the shaft section 71 extending in a side view in steps. Consequently, a longitudinal axis of the shaft section 71 (which corresponds to the axis of rotation D) and a longitudinal axis of the actuating arm 74 are parallel to one another.
- the crank arm 72 is rotatable about the axis of rotation D and swivels in a circular path about the axis of rotation D.
- crank arm 72 is received between driving projections 82, which protrude from the actuating element 32, about a pivot axis K.
- a pivot bearing or pivot bearing 83 with the axis of rotation or pivot axis K for the actuating arm 74 is therefore provided between the driving projections 82.
- the components of the transmission element 70 and the rotary bearing 82 arranged outside the switch housing 33 thus form the crank mechanism 81.
- a gear 172 is arranged on the shaft section 71, which meshes with a tooth section 182 of the actuating element 32 which, for example, faces this gear 172 th side of the actuating element 32 is arranged and extends between its actuating sections 96, 97.
- the crank mechanism 81 and thus the transmission mechanism 80 are arranged outside the switch housing 33.
- the switch actuator 75 for example a magnet, on the other hand, is arranged within the switch housing 33, namely the switch chamber 35.
- the actuating arm 74 forms a drive part 74A of the transmission gear 80 and at the same time the transmission element 70.
- the shaft section 71 forms an output part 71 A of the transmission gear 80 and at the same time the transmission element 70.
- the transmission element 70 thus has the drive part 74A and the output part 71 A in one piece .
- a seal 76 is arranged on the pivot bearing 77, so that the transition area between the transmission element 70 and the switch chamber 35 is sealed.
- the seal 76 comprises, for example, a sealing flange 78 embodied, for example, as an annular flange 78B, which protrudes radially outward in front of the shaft section 71 and into a seal receptacle 56 of the switch housing 33 intervenes.
- the seal receptacle 56 comprises, for example, an annular groove 56B on the side wall 52.
- the transmission element 70 is also held on the switch housing 33 so as to be longitudinally displaceable with respect to the axis of rotation D.
- the sealing flange 78 and the sealing receptacle 56 form anti-shift contours 78A and 56A, which make the transmission element 70 non-shiftable with respect to the axis of rotation D at the passage opening 54 Stützkon structures so that they hold the transmission element 70 with respect to the axis of rotation D ver shiftable.
- the anti-shift contours 78A and 56A allow the transmission element 70 to rotate about the axis of rotation D with respect to the switch housing 33.
- the switching element 24 assumes different switching positions with which, for example, clockwise or counterclockwise rotation of the drive motor 16 can be set.
- the switch positions MN, ML, MR are assigned to the actuation positions N, L, R of the actuation element 32 and / or correlate with these actuation positions.
- a magnetic field of the switching actuator 75 can penetrate the switching element 24 in different directions, so that the switching element 24 is controlled, for example, to output different sensor signals or control signals SIG to a control device 21 A, for example a microcontroller .
- the switching element 24 of the control device 21 A specifies, for example, that it controls the energizing device 21 to energize the drive motor 16 in the left or right direction of rotation.
- the actuating element 32 for example, a middle or neutral operating position N and the switching actuator 75 the middle, so to speak undefined switching position MN.
- blocking contours 90, 91 ensure that the actuating element 31 cannot be actuated from its actuating position A into one of the actuating positions E.
- the blocking contours 90, 91 act directly on one another. It is advantageous that the blocking contours 90, 91 do not act directly on the transmission gear 80 or its components.
- the blocking contours 90, 91 are expediently not in engagement and / or direct contact with the transmission gear 80 or its components and / or the transmission element 70.
- the blocking contours 90, 91 include, for example, blocking projections 92, 93 on the actuating elements 31, 32.
- the blocking projection 92 is for example in front of a top side of the actuating element 31 facing the actuating element 32.
- the blocking projection 92 is designed as a rib.
- the blocking contour 91 protrudes from the actuating element 32 in the manner of a blocking projection 93. In the actuating position N, the blocking projections 92, 93 strike one another, so that actuation of the actuating element 31 in the direction of one of the actuating positions E is not possible.
- the blocking projection 92 there are free spaces or recesses into which the blocking projection 93 can engage when the actuating element 32 is moved into one of the actuating positions R or L. Then the Actuating element 31 can be adjusted from the actuating position A into one of the actuating positions E. On the other hand, however, it is then not possible for the actuation projection 93 to be actuated past the actuation projection 92 from one of the actuation positions R, L into the other actuation position L, R. Then the blocking projection 93 strikes namely on the sides of the blocking projection 92 extending parallel to the sliding axis S.
- the actuating element 32 can preferably be locked using a locking arrangement 98.
- the latching arrangement comprises, for example, a latching projection 99 which is stationary with respect to the switch housing 33 and / or machine housing 11 and which engages in one of two latching recesses 99R, 99L in the actuating positions R, L.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Portable Power Tools In General (AREA)
- Slide Switches (AREA)
- Push-Button Switches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019114287.3A DE102019114287A1 (de) | 2019-05-28 | 2019-05-28 | Schalter für eine Hand-Werkzeugmaschine |
| PCT/EP2020/064191 WO2020239600A1 (de) | 2019-05-28 | 2020-05-20 | Schalter für eine hand-werkzeugmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3977494A1 true EP3977494A1 (de) | 2022-04-06 |
| EP3977494B1 EP3977494B1 (de) | 2024-07-24 |
Family
ID=70802866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20727627.0A Active EP3977494B1 (de) | 2019-05-28 | 2020-05-20 | Schalter für eine hand-werkzeugmaschine |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US12288654B2 (de) |
| EP (1) | EP3977494B1 (de) |
| JP (1) | JP7536758B2 (de) |
| CN (1) | CN114175199B (de) |
| DE (1) | DE102019114287A1 (de) |
| WO (1) | WO2020239600A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113066678B (zh) * | 2021-04-14 | 2022-11-11 | 国网湖北省电力有限公司咸宁供电公司 | 基于齿轮盘实现模式切换的安全开关 |
| CN220179248U (zh) * | 2023-04-23 | 2023-12-15 | 浙江普莱得电器股份有限公司 | 一种电动工具 |
| JP2026005782A (ja) * | 2024-06-27 | 2026-01-16 | オムロン株式会社 | トリガスイッチおよびこれを備えた電動工具、トリガスイッチの制御方法、制御プログラム |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4879570B2 (ja) * | 2005-12-01 | 2012-02-22 | 日本電産テクノモータホールディングス株式会社 | 電動工具用トリガースイッチ |
| JP5405240B2 (ja) | 2009-09-04 | 2014-02-05 | 株式会社マキタ | 電動工具におけるレバーの防水構造 |
| DE102010012024B4 (de) * | 2010-03-19 | 2015-05-28 | Festool Gmbh | Handwerkzeugmaschine mit einem Zwangsrotation-Exzentergetriebe |
| DE102010023397A1 (de) * | 2010-06-10 | 2011-12-15 | Festool Gmbh | Hand-Werkzeugmaschine mit einem elektrischen Schalter |
| JP5898993B2 (ja) | 2011-03-15 | 2016-04-06 | 株式会社マキタ | 電動工具用トリガースイッチ |
| DE102011078082B4 (de) * | 2011-06-27 | 2022-08-11 | Robert Bosch Gmbh | Handwerkzeugmaschine, insbesondere Bohr- oder Schraubgerät |
| CN202726870U (zh) * | 2012-07-27 | 2013-02-13 | 南京久驰机电实业有限公司 | 一种电动工具调速控制装置 |
| JP6277668B2 (ja) * | 2013-02-14 | 2018-02-14 | オムロン株式会社 | 操作レバーのシール構造およびこれを用いた電動工具 |
| DE102014210344A1 (de) * | 2013-06-03 | 2014-12-04 | Robert Bosch Gmbh | Handwerkzeugmaschine mit einem schaltbaren Getriebe |
| JP2016225147A (ja) * | 2015-05-29 | 2016-12-28 | オムロン株式会社 | スイッチ |
| DE102015121305A1 (de) * | 2015-12-08 | 2017-06-08 | Festool Gmbh | Hand-Werkzeugmaschine |
| EP3217412B1 (de) * | 2016-03-08 | 2019-03-20 | Festool GmbH | Schalter für eine hand-werkzeugmaschine |
| CN107294466A (zh) | 2016-04-05 | 2017-10-24 | 德昌电机(深圳)有限公司 | 电动工具及其电机驱动系统 |
| DE102017216015A1 (de) * | 2017-09-12 | 2019-03-14 | Robert Bosch Gmbh | Handwerkzeugmaschine |
-
2019
- 2019-05-28 DE DE102019114287.3A patent/DE102019114287A1/de not_active Withdrawn
-
2020
- 2020-05-20 EP EP20727627.0A patent/EP3977494B1/de active Active
- 2020-05-20 WO PCT/EP2020/064191 patent/WO2020239600A1/de not_active Ceased
- 2020-05-20 US US17/614,040 patent/US12288654B2/en active Active
- 2020-05-20 JP JP2021524474A patent/JP7536758B2/ja active Active
- 2020-05-20 CN CN202080039593.6A patent/CN114175199B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020239600A1 (de) | 2020-12-03 |
| JP7536758B2 (ja) | 2024-08-20 |
| CN114175199A (zh) | 2022-03-11 |
| EP3977494B1 (de) | 2024-07-24 |
| CN114175199B (zh) | 2025-07-15 |
| JP2022533807A (ja) | 2022-07-26 |
| DE102019114287A1 (de) | 2020-12-03 |
| US20220230818A1 (en) | 2022-07-21 |
| US12288654B2 (en) | 2025-04-29 |
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