WO2023012336A1 - Appareil électrique fonctionnant sur batterie, batterie et appareil électrique - Google Patents

Appareil électrique fonctionnant sur batterie, batterie et appareil électrique Download PDF

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Publication number
WO2023012336A1
WO2023012336A1 PCT/EP2022/072093 EP2022072093W WO2023012336A1 WO 2023012336 A1 WO2023012336 A1 WO 2023012336A1 EP 2022072093 W EP2022072093 W EP 2022072093W WO 2023012336 A1 WO2023012336 A1 WO 2023012336A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
securing
electrical device
receptacle
surface area
Prior art date
Application number
PCT/EP2022/072093
Other languages
German (de)
English (en)
Inventor
Simon Kirschbaum
Melanie KNÖDLER
Rafael Artur Soares Pereira
Christoph HÖRSCH
Thomas Robieu
Original Assignee
Alfred Kärcher SE & Co. KG
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 Alfred Kärcher SE & Co. KG filed Critical Alfred Kärcher SE & Co. KG
Priority to EP22764338.4A priority Critical patent/EP4380757A1/fr
Priority to CN202280054681.2A priority patent/CN117794695A/zh
Publication of WO2023012336A1 publication Critical patent/WO2023012336A1/fr

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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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2868—Arrangements for power supply of vacuum cleaners or the accessories thereof
    • A47L9/2884—Details of arrangements of batteries or their installation

Definitions

  • the present invention relates to a battery-operated electrical device, in particular in the form of a cleaning device, a gardening device or a power tool, which electrical device comprises at least one electrical consumer and can be operated independently of the mains with a battery, a battery holder for receiving a battery being arranged or formed on the electrical device, wherein the electrical device includes a safety device for securing the battery in a connected position, in which the battery is accommodated in the battery holder and is mechanically and/or electrically operatively connected to the electrical device, the safety device comprising a safety element which, in an unlocked position, is essentially positioned outside the battery holder is to allow movement of the battery in and out of the battery holder, and protrudes into the battery holder in a secured position to with ei Ner fuse element recording of the battery to cooperate and to secure the battery in the connection position in the battery holder.
  • the present invention also relates to a battery, in particular rechargeable and in particular for a battery-operated electrical device, in particular in the form of a cleaning device, a gardening device or a power tool, which electrical device comprises at least one electrical consumer and can be operated independently of the mains with a battery and on which a battery holder for recording of a battery, the battery comprising a safety device for securing the battery in a connected position in which the battery is accommodated in the battery receptacle and is mechanically and/or electrically operatively connected to the electronic device, the safety device comprising a safety element which in an unlocking position is positioned substantially outside of the battery holder to movement of the battery into and out of the battery holder, and protrudes into the battery holder in a securing position in order to cooperate with a securing element holder of the electrical device and to secure the battery in the connected position in the battery holder.
  • the present invention relates to an electrical device, in particular battery-operated and in particular in the form of a cleaning device, a gardening device or a power tool, which electrical device comprises at least one electrical consumer and can in particular be operated independently of the mains with a battery, with an accessory holder for receiving an accessory being arranged on the electrical device or is designed, wherein the electrical device comprises a safety device for securing the accessory in a connection position, in which the accessory is accommodated in the accessory holder and is mechanically operatively connected to the electrical device, the safety device comprising a safety element which, in an unlocked position, is essentially positioned outside of the accessory holder is to allow movement of the accessory into and out of the accessory receptacle, and in a secured position in the Accessory receptacle protrudes in to cooperate with a securing element receptacle of the accessory and to secure the accessory in the connected position in the accessory receptacle.
  • a battery-operated electrical device of the type described above is known, for example, from WO 2018/068820 A1.
  • a release lever In this electrical device, in order to remove the battery from the battery holder, a release lever must be actuated, which is designed in one piece with the safety element.
  • the electrical device In order for a user to be able to use the unlocking lever to move the locking element from the locking position to the unlocking position, the electrical device must be constructed in such a way that the unlocking lever is guided out of the housing of the electronic device and is thus accessible and operable for a user. This requires additional space on the electrical device. In addition, it is practically impossible to do it with just one hand to operate the unlocking lever and at the same time to remove the battery from the battery holder with this hand.
  • this object is achieved according to the invention in that the safety device is designed without levers and in such a way that the safety element only interacts with the battery when the battery is moved, starting from the safety position and out of the battery holder into the unlocking position is movable.
  • the solution proposed according to the invention thus makes it possible, in particular, to completely dispense with an unlocking lever, as is described, for example, in WO 2018/068820 A1.
  • a structure of the battery-powered electronic device can be simplified.
  • no additional opening is required in the housing of the electrical device in order to lead the unlocking lever required in the prior art out of the housing of the electrical device.
  • this saves installation space and simplifies the construction of the electrical device.
  • the proposed development enables simple and safe one-handed operation of the electrical device when removing the battery. This only has to be pulled out of the battery holder against the action of the securing element.
  • a battery-operated electrical device can be made more compact and easier to handle.
  • the securing element In an unlocked position, the securing element is positioned essentially outside of the battery holder. This is to be understood in particular in such a way that it is positioned almost outside the battery holder, but can still protrude a little into the battery holder, for example with a protruding edge. How far that is depends on the clearance between the battery and the battery riefact is provided in order to introduce the battery into the battery holder without tilting, if possible, and also to remove it from this again without tilting. If the fuse element is arranged or formed on the battery, it essentially does not protrude beyond a housing of the battery. In the securing position, on the other hand, it protrudes beyond the housing of the battery and then engages in the securing element receptacle arranged or formed on the electrical device in order to secure the battery in the battery receptacle.
  • the securing device is designed in the form of a latching or snap-on connection device. This makes it possible, in particular, to give a user haptic and/or acoustic feedback when the battery is secured in the battery receptacle, ie in particular when the securing element snaps or latches into the securing element receptacle.
  • the securing element can preferably be moved from the securing position into the unlocking position against the action of a prestressing element.
  • the prestressing element can be realized in the form of a spring, for example a compression spring, which is designed as a helical spring, for example.
  • the prestressing element makes it possible in particular to specify a prestressing force.
  • a force can be set which is required to remove the battery from the battery holder, ie to transfer it from the secured position to the unlocked position. For example, a simple force adjustment can be made possible by replacing the prestressing element.
  • the securing element In order to specify a defined securing or holding force in the securing position, it is favorable if the securing element is held in a spring-biased manner in the securing position. In this way, in particular, minimal force can be used to remove the battery from the battery holder are specified by the acting prestressing force of the prestressing element in the secured position.
  • the securing element comprises a first effective surface area and a second effective surface area, that the first effective surface area is designed to interact with the battery when it is inserted into the battery receptacle, and that the second effective surface area is designed to interact with the battery when removing from the battery holder.
  • a securing element with two different effective surface areas can then in particular also require different actuation forces to transfer the securing device from the securing position to the unlocking position, on the one hand when inserting the battery and on the other hand when removing the battery from the battery holder.
  • the active surface areas can be designed in such a way that the battery can be inserted into the battery holder relatively easily, i.e.
  • the design in particular of the second active surface area, can be used to specify how large a removal force must be at least. In particular, this can also take place in conjunction with a prestressing element as described above.
  • the first active surface area is preferably larger than the second active surface area.
  • interaction with the battery when inserting or removing it from the battery receptacle can be specified via a size of the active surface area.
  • a second effective surface area which is smaller than the first effective surface area, can thus be configured in particular in such a way that a larger one is required to remove the battery from the battery holder than when it is inserted. It is favorable if the first active surface area and/or the second active surface area are flat or curved concavely or convexly pointing away from the securing element.
  • the shape of the active surface areas enables in particular an individual adjustment of required actuation forces and an increase in a prestressing force, against the effect of which the battery can be inserted into or removed from the battery holder.
  • a force profile of the force exerted by the securing element on the battery as a function of a displacement path of the battery during insertion or removal can be specified by shaping the active surface areas.
  • the first active surface area defines a first run-on slope and the second active surface area defines a second run-on slope.
  • This configuration makes it possible, in particular, to move the securing element from the securing position into the unlocking position in cooperation with, for example, an outer housing surface or a housing edge of the battery, which rests against the first active surface or the second active surface when the battery is inserted or removed from the battery receptacle.
  • By shaping and sizing the effective surface areas and thus the bevels a force effect that is realized by a movement of the battery relative to the battery receptacle on the securing element can be adjusted in the desired manner.
  • the first effective surface area and the second effective surface area enclose an angle of attack between them.
  • the active surface areas point in different directions.
  • they can interact with different housing areas or housing edges of the battery when inserting or removing the battery from the battery receptacle.
  • the angle of attack is in a range from approximately 60° to approximately 120°. In particular, it can be in a range from about 80° to about 100°. In this way it can be achieved in a particularly simple manner that the two active surface areas point in directions that are linearly independent of one another in a mathematical sense, whereby a specific interaction of the two active surface areas with a different housing area or a different housing edge of the battery is possible.
  • a compact construction of the safety device is possible in particular if the first effective surface area and the second effective surface area define a common edge.
  • the edge is rounded. In particular, snagging when inserting or removing the battery can be avoided.
  • the battery can be secured in the connecting position with the securing device in a defined manner if the edge in the securing position projects beyond a wall surface delimiting the battery receptacle and points into the battery receptacle.
  • this makes it possible to design the fuse element receptacle on the battery in the form of a recess or recess.
  • the electrical device includes a guide device for guiding the battery when it is inserted, in particular when it is pushed into the battery holder, and that the guide device defines an insertion direction.
  • a guide device facilitates in particular the engagement of mechanical and/or electrical connection or contact elements which are in engagement with one another in the connection position. In particular, canting or snagging when bringing mechanical or electrical contacts of the battery and electrical device into engagement can be avoided in this way.
  • the guide device specifies in particular the direction of insertion, ie for example a direction in which the battery can be pushed into the battery holder.
  • first active surface area and the second active surface area run transversely to the insertion direction, in particular inclined.
  • transverse does not mean perpendicular to the direction of insertion in this case, since sliding the battery on the two active surface areas when inserting or removing the battery from the battery holder is advantageous for the functioning of the securing device in order to move the securing element in the desired manner by moving the battery .
  • first effective surface area and the second effective surface area are inclined differently in relation to the insertion direction. Different inclinations of the active surface areas in relation to the direction of insertion mean that actuating forces for transferring the safety device from the safety position to the unlocking position can be specified differently when inserting the battery and when removing it from the battery holder.
  • the second active surface area is more inclined relative to the insertion direction than the first active surface area.
  • the edge preferably extends in a direction transverse, in particular perpendicular, to the direction of insertion. In this way, the battery can be optimally secured in the battery receptacle with the securing device.
  • the direction of insertion is parallel or substantially parallel to the gravity when the electrical device is used as intended. direction of force.
  • This configuration facilitates in particular the insertion of the battery into the battery receptacle, since part of the actuating force required to transfer the safety device from the safety position to the unlocking position can already be applied by the weight of the battery. Furthermore, the effect of the safety device can be improved in this way, since in order to remove the battery the user not only has to apply the pure actuating force for the safety element, but also the weight of the battery.
  • the securing element is arranged or designed to be movable, in particular displaceable, in a securing direction transversely, in particular perpendicularly, to the insertion direction.
  • the battery can be optimally secured in the battery holder.
  • the fuse element and the battery can thus be moved in linearly independent directions relative to one another in a mathematical sense.
  • the safety device is designed in such a way that a first force exerted by the safety element on the battery or the electrical device when it is removed from the battery holder increases more with the same feed path, in particular parallel to the direction of insertion, than when the battery is inserted into the battery holder reverse direction.
  • This type of design of the safety device can in particular make it more difficult for a user to remove the battery from the battery receptacle compared to inserting it.
  • this means that the battery is secured in the battery holder in the desired manner.
  • the securing device can be formed in the proposed manner by active surface areas that are inclined differently in relation to the direction of insertion.
  • the electrical device or battery includes a fuse element recess and the fuse element is in the fuse element recess movably held.
  • the fuse element can be slidably arranged in the securing element recess. A direction of movement of the securing element can thus be specified in a simple manner.
  • the electrical device or the battery includes a retaining device for retaining the security element in the security element recess.
  • the electrical device can be designed in a simple manner if the retaining device is designed in the form of a latching or snap-in connection device and comprises interacting latching elements which are arranged or formed on the one hand on the securing element and on the other hand on the securing element recess.
  • a restraining device allows in particular a simple installation of the electrical device.
  • the retaining device can be designed in such a way that the securing element only has to be pressed into the securing element recess and then automatically remains held in the securing element recess when the interacting latching elements engage with one another.
  • the interacting latching elements are designed in the form of a latching recess and in the form of a latching lug and if the latching elements can be moved relative to one another in a direction transverse to the securing direction, in particular parallel or opposite to the insertion direction. In this way, an effect of the interacting latching elements, in particular in a direction perpendicular to the securing direction, can be specified in order to hold the securing element in the securing element recess in a defined and permanently secure manner.
  • the electrical device or the battery advantageously includes a stop device for limiting a movement of the securing element in the direction of the battery receptacle.
  • a stop device for limiting a movement of the securing element in the direction of the battery receptacle.
  • the securing element is always in a defined position in the securing position Way is positioned, for example, protrudes in a defined manner in the battery holder.
  • the electrical device can be designed in a particularly simple manner if the restraint device includes the stop device.
  • the stop device can form a stop or define a stop surface.
  • the leverless safety device comprises an actuating element, that the actuating element can be actuated to transfer the safety device from the safety position to the unlocking position and that the safety element forms the confirmation element.
  • actuating element can be actuated to transfer the safety device from the safety position to the unlocking position and that the safety element forms the confirmation element.
  • Actuation can then take place, as described, in particular by inserting the battery into the battery holder or removing it from it.
  • An additional actuating element for example an actuating or unlocking lever, as is known from the prior art, is not required in the proposed development.
  • the actuating element comprises a first actuating surface for transferring the securing device from the securing position to the unlocking position when inserting the battery into the battery holder, if the actuating element comprises a second actuating surface for transferring the securing device from the securing position into the unlocking position when removing the Battery from the battery holder, and when the first effective surface defines the first actuating surface and the second effective surface defines the second actuating surface.
  • a compact, battery-operated electrical device can be formed by forming the actuation surfaces through the effective surfaces of the securing element.
  • the electrical device includes a battery and if the battery can be brought from a disconnected position, in which it is disengaged from the battery receptacle, into the connected position. In particular, this allows a user to replace the battery, if necessary, with a charged battery when it is empty. In this way, the battery-operated electrical device can continue to be used without a significant break.
  • the battery preferably includes a securing element receptacle for receiving the securing element in the securing position.
  • a battery makes it possible in a particularly simple manner to secure it in the battery receptacle of the electrical device when it is mechanically and/or electrically operatively connected to the electrical device and assumes the connection position.
  • a defined securing of the battery in the battery receptacle can be achieved in particular by the securing element receptacle having an undercut.
  • Such an undercut can in particular define a preferred direction for a movement of the battery relative to the battery holder, in order to make it easier, for example, to insert the battery into the battery holder, but to make it more difficult to remove it. In this way, securing the battery in the battery receptacle can be further improved.
  • the securing element receptacle has a retaining surface and if the retaining surface runs transversely to the direction of insertion.
  • the retaining surface can in particular run perpendicularly to the direction of insertion or be slightly inclined with respect to a plane running perpendicularly to the direction of insertion. In the latter case, an undercut can be implemented in a simple manner.
  • a good securing of the battery in the battery receptacle can be achieved, for example, when the undercut encompasses the retaining surface.
  • the second active surface area is preferably in contact with the restraining surface in the securing position. As already described above, it can be achieved that the removal of the battery from the battery holder is made more difficult, so that the battery cannot unintentionally emerge from the battery holder, for example fall out.
  • the design of the second active surface area and the retaining surface can also be used, for example, to set a force required to remove the battery from the battery holder, in particular in conjunction with a prestressing element that interacts with the securing element.
  • the second active surface area and the retaining surface are arranged and designed in such a way that when the battery is removed from the battery holder, the securing element with the second active surface slides onto the retaining surface and the securing element is moved from the secured position to the unlocked position.
  • a force required for removing the battery from the battery receptacle can be adjusted by the design of the second effective surface area and the retaining surface, particularly also in connection with a prestressing element that automatically moves the securing element into the securing position.
  • the safety device is designed in such a way that a removal force to be overcome in order to remove the battery from the battery holder is greater than the weight of the battery.
  • the removal force can be at least 10% greater, more particularly at least 50% greater than the weight of the battery.
  • the safety device can be configured in a simple manner if the removal force is predetermined by a spring constant of the prestressing element and an inclination of the second active surface area relative to the insertion direction.
  • these two parameters can be varied as desired. For example, if the inclination of the second active surface area is predetermined, the removal force can be increased or decreased by replacing the prestressing element with another prestressing element with a larger or smaller spring constant.
  • electrical devices or their battery receptacles can be adapted for batteries of different sizes and, in particular, of different weights.
  • the electrical device is preferably designed in the form of a vacuum cleaner, a high-pressure cleaning device, a power tool or a garden tool. Such electronic devices can also be used battery-operated where no mains connection is available for the power supply.
  • the electrical device has two or more battery receptacles and if each battery receptacle is assigned a safety device. For example, electrical devices with a higher voltage requirement can be operated if two or more batteries are connected in series. If the two or more batteries are connected in parallel, a greater current can be provided.
  • the object stated at the outset is also achieved according to the invention with an electrical device of the type described at the outset in that the safety device is designed without levers and in such a way that the safety element can be moved exclusively in cooperation with the accessory when the latter is moved, starting from the safety position and out of the accessory part receptacle into the unlocking position is.
  • Such an electrical device makes it possible in particular to secure accessories easily and in a defined manner in the accessory holder. So accessories parts of the electrical device can be positioned on the electrical device to save space and be ready to hand at all times. If necessary, they can be removed from the accessory holder. If they are no longer required, they can be fully or partially inserted into the accessory holder.
  • the principle of securing the accessory corresponds to the principle of securing the battery in the battery holder of the battery-powered electronic device described above.
  • all the developments of the battery holder and the battery proposed in connection with the battery-operated electrical device can be transferred directly to the accessory holder of the electrical device and the accessory.
  • the electrical device is battery-operated, it can comprise a battery holder with a safety device as described above, and one or more accessory holders with a safety device.
  • the electrical device is preferably designed in the form of one of the battery-operated electrical devices described above. With such an electrical device, not only accessories but also batteries can be secured in the connection position in a battery receptacle provided for this purpose in the desired manner and as described in detail above.
  • the electrical device includes two or more accessory mounts. In this way, two or more accessories can be secured to the device in a defined manner.
  • Figure 1 a schematic perspective view of an embodiment of a cleaning device
  • FIG. 2 a view of the arrangement from FIG. 1 in the direction of arrow A
  • FIG. 3 a view analogous to FIG. 1 of the arrangement from FIG. 1 with the battery removed;
  • FIG. 4 a view of the arrangement from FIG. 3 in the direction of arrow B;
  • FIG. 5 an enlarged, partially broken partial view of a battery holder of the cleaning device from FIGS. 1 to 4 with the battery removed;
  • FIG. 6 a partial cross-sectional view of the arrangement of FIGS. 1 and 2 in the area of the battery holder;
  • FIG. 7 a longitudinal sectional view of the arrangement of FIGS. 1 and 2 in
  • Figure 8 a view analogous to Figure 7 when inserting the battery into the
  • FIG. 9 is an enlarged view of area C in FIG. 6;
  • Figure 10 is a sectional view taken along line 10-10 of Figure 9;
  • FIG. 11 a schematic sectional view of an exemplary embodiment of a security element
  • FIG. 12 a schematic sectional view of an exemplary embodiment of a fuse element
  • FIG. 13 a schematic sectional view of an embodiment of a fuse element
  • FIG. 14 a schematic sectional view of an exemplary embodiment of a fuse element
  • FIG. 15 a schematic sectional view of an exemplary embodiment of a fuse element
  • FIG. 16 a schematic sectional view of an exemplary embodiment of a fuse element
  • FIG. 17 a schematic sectional view of an embodiment of a fuse element
  • FIG. 18 a schematic sectional view of an embodiment of a fuse element
  • FIG. 19 a schematic sectional view of an embodiment of a fuse element
  • FIG. 20 a schematic sectional view of an exemplary embodiment of a fuse element
  • FIG. 21 a schematic sectional view of an exemplary embodiment of a security element
  • FIG. 22 a schematic sectional view of an exemplary embodiment of a fuse element
  • FIG. 23 a schematic sectional view of an exemplary embodiment of a fuse element
  • FIG. 24 a schematic sectional view of an exemplary embodiment of a fuse element
  • FIG. 25 a schematic sectional view of an exemplary embodiment of a fuse element
  • FIG. 26 a schematic sectional view of an exemplary embodiment of a fuse element
  • FIG. 27 a schematic sectional view of a detail similar to FIG. 8 of a further exemplary embodiment of an electrical device when a corresponding battery is inserted into the battery receptacle of the electrical device;
  • FIG. 28 a view analogous to FIG. 27, but with the battery pushed into the battery receptacle.
  • an electrical device 10 is shown schematically. It is designed in the form of a battery-operated electrical device 12 . It can therefore be operated independently of the mains without a power cable.
  • the electrical device 10 is designed in the form of a cleaning device 14, specifically as a vacuum cleaner 16.
  • the electrical device 10 includes a chassis 18 with a plurality of wheels 20, on which a collection container 22 for receiving dirt that has been sucked up is arranged.
  • a connection 24 for a suction hose (not shown) is arranged on the collection container 22 .
  • a suction head 26 is detachably arranged on the collection container 22 .
  • Two lateral clamping levers 28 secure the suction head 26 on the collection container 22.
  • An electrical consumer 30 in the form of an electric motor of a suction device is arranged on the suction head 26 .
  • the electrical load 30 can be operated independently of the mains with a battery 32 .
  • the battery 32 is rechargeable and in the embodiment in the form of a so-called battery pack 34 . It includes a plurality of storage cells 36 which are arranged in a housing 38 of the battery 32 .
  • a battery receptacle 40 is arranged or formed on electrical device 10, into which battery 32 can be inserted starting from a disconnected position, as shown by way of example in FIGS. 3 and 4 and in which it is completely disengaged from battery receptacle 40.
  • a switch 42 arranged on the suction head 26 serves to activate and deactivate the electrical device 10.
  • the battery 32 On its rear side, the battery 32 comprises a guide element 44 with a T-shaped cross section, which defines two guide grooves 46 pointing away from one another in opposite directions.
  • the guide grooves 46 extend parallel to one another and define an insertion direction 48.
  • electrical connection contacts 52 of the battery are freely accessible through openings provided for this purpose.
  • a securing element receptacle 56 is formed on a rear side 54 of the guide element 44 . This defines a prism-shaped incision with a retention surface extending transversely to the direction of insertion 48 .
  • the rear side 54 and the retaining surface 60 enclose an angle 62 between them which is less than 90° and is approximately 80° in the exemplary embodiment illustrated in the figures.
  • An undercut 64 is formed in this way.
  • the securing element receptacle 56 is delimited by an inner wall surface 66 which encloses an undercut angle 68 of approximately 50° with the retaining surface 60 .
  • the undercut 64 encompasses the retention surface 60.
  • the guide device 70 also defines the insertion direction 48.
  • the guide device 70 comprises two guide grooves 72 pointing towards one another, into which two guide projections 74 pointing away from one another on the guide element 44 can be inserted parallel to the insertion direction 48 .
  • the guide projections 74 delimit the guide grooves 46 on the battery 32.
  • the electrical device 10 When used as intended, the electrical device 10 is aligned in such a way that the insertion direction 48 runs parallel to the direction of gravity 76 .
  • the guide grooves 72 are open counter to the direction of gravity 76 so that ends of the guide projections 74 pointing in the direction of gravity can be pushed into the guide grooves 72 in the insertion direction 48 .
  • a contact block 78 is arranged on the battery receptacle 40 between the guide grooves 72 in the region of a closed end of the same and has two electrically conductive contacts 80 protruding counter to the direction of gravity, which engage with the connection contacts 52 when the battery 32 is inserted into the battery receptacle 40, as is shown schematically shown in Figure 7.
  • the electrical device 12 also includes a securing device 82 for securing the battery 32 in a connection position shown schematically in FIG. In this connection position, the contacts 80 are in engagement with the connection contacts 52 .
  • the securing device 82 comprises a securing element 84 which is movably held in a block-shaped securing element recess 86 .
  • the securing element 84 is arranged or formed in the securing element recess 86 in a securing direction 88 which runs perpendicularly to the insertion direction 48 , namely in a displaceable manner.
  • the fuse element recess 86 is open in the direction of the battery holder 40 pointing out.
  • a short guide pin 92 protrudes in the securing direction 88 from a rear wall surface 90 of the securing element recess 86 .
  • a recess 94 in the form of a blind hole pointing in the direction of the guide pin 92 is formed on the securing element 84 .
  • a further guide pin 98 protrudes in the securing direction 88 and points towards the guide pin 92 from a wall surface 96 of the recess 94 pointing in the direction of the guide pin 92 .
  • a prestressing element 100 in the form of a helical spring 102 is supported on the one hand on the wall surface 90 and on the other hand on the wall surface 96 and surrounds one of the guide pins 92 and 98 with its ends 8, the securing element 84 is in a position furthest from the wall surface 90.
  • FIG. This position is defined by a retaining device 104 for retaining the securing element 84 in the securing element recess 86.
  • the retaining device 104 is designed in the form of a snap-in/snap-in connection device 106 and comprises interacting snap-in elements 108 and 110 which are arranged or designed on the one hand on the securing element recess 86 and on the other hand on the securing element 84 .
  • the interacting latching elements 108 and 110 are in the form of a latching recess 112 in a side wall 114 delimiting the securing element recess 86 counter to the insertion direction 48 and in the form of a latching lug 116 .
  • the latching elements 108 and 110 can be moved relative to one another in a direction transverse to the securing direction 88, in the exemplary embodiment illustrated in the figures parallel or opposite to the insertion direction 48. This is achieved by the latching lug 116 being arranged on a leaf spring element 118 which is formed on the securing element 84 .
  • the leaf spring element 118 is formed in a side wall 120 of the securing element 84 delimiting the recess 94, specifically through a U-shaped slot 122, the "U" being open in the direction of the wall surface 90 pointing.
  • a free end 124 of the leaf spring element 118 points in the direction of the battery receptacle 40.
  • the latching lug 116 is formed on a side surface of the leaf spring element 118 facing the latching recess 112 at its free end 124.
  • the free end 124 defines an end surface 128 which is perpendicular to the securing direction 88 .
  • a detent side surface 130 pointing into the detent recess 112 forms a slide-on surface 132 which is slightly inclined relative to the securing direction 88 and slopes down in the direction of the wall surface 90 .
  • An opening 136 is formed in a housing 134 of the suction head 26, into which an end 138 of the securing element 84 pointing away from the wall surface 90 protrudes and, in the basic position shown in FIG.
  • the configuration of the securing element 84 with the leaf spring element 118 makes it possible to position the helical spring 102 surrounding the guide pin 98 in order to mount the securing element 84 on the electrical device 10 and then to insert the securing element 84 with the helical spring 102 first into the securing element recess 86, so that the helical spring 102 also the guide pin 92 surrounds. If the securing element 84 is moved so far into the securing recess 86 that the detent 116 slides up on an edge of the opening 136, the leaf spring element 118 is slightly in Insertion direction 48 deflected. If the securing element 84 is advanced further in the direction of the wall surface 90 , the leaf spring element 118 can pivot out counter to the insertion direction 48 when the latching lug 116 can enter the latching recess 112 .
  • a movement of the securing element 84 in the direction of the battery receptacle 40 is limited by a stop device 140 .
  • the stop surface 142 and the boundary surface 144 are in the basic position of the safety device, as can be seen particularly well in Figure 8, against one another. Consequently, restraint device 104 includes stop device 140.
  • the housing 134 In order to remove the fuse element 84 from the fuse element recess 86, the housing 134 must be opened. In a next step, the leaf spring element 118 must then be pivoted in the insertion direction 48 so that the latching lug 116 releases the latching recess 112 .
  • the helical spring 102 which presses the securing element 84 pretensioned in the basic position with the stop surface 142 against the boundary surface 144 , can then push the securing element 84 out of the securing element recess 86 into the battery holder 40 . In this way, both the securing element 84 and the coil spring 102 can be exchanged.
  • the securing element 84 can in particular be moved between two functional positions, namely from a securing position in which it protrudes as far as possible into the battery holder 40 into an unlocking position. ment, in which it releases the battery holder 40 substantially completely through the rear side 54 against the action of the biasing element 100 and is moved towards the wall surface 90 .
  • the battery 32 In the unlocked position, the battery 32 can be moved into and out of the battery holder 40 .
  • securing element 84 interacts with securing element receptacle 56 of battery 32 and secures it in the connection position described, i.e. when contacts 80 and connecting contacts 52 are in engagement with one another, in battery receptacle 40.
  • the safety device 82 is designed without levers. There is therefore no unlocking lever provided which is connected to the locking element 84 or coupled in any way in order to move the locking element 84 from the locking position into the unlocking position. In the case of the battery-operated electrical device 12 shown schematically in the figures, there is therefore no unlocking lever led out of the housing 134 . Rather, the safety device 82 is designed in such a way that the safety element 84 can be moved exclusively in cooperation with the battery 32 when the same is moved, starting from the safety position and out of the battery receptacle 40 into the unlocking position.
  • the securing element 84 comprises a first active surface area 146 and a second active surface area 148.
  • the first active surface area 146 is designed to interact with the battery 32 when the same is inserted into the battery receptacle 40.
  • the second active surface area 148 is designed to interact with the battery 32 when it is removed from the battery receptacle 40.
  • the active surface areas 146 and 148 each form part of an end face 150 of the securing element 84 which points into the battery receptacle 40 .
  • securing element 84 which is shown again in Figure 18, is designed in such a way that, in the securing position with battery 32 inserted in battery receptacle 40, end face 150 with the two active surface areas 146 and 148 fits into securing element receptacle 56 engages, as shown in particular in Figures 7 and 10.
  • the second active surface area 148 is flat.
  • the concave curvature of the first active surface area 146 means that when the battery 32 is pushed into the battery receptacle 40 in the insertion direction 48, the force for moving the securing element 84 against the action of the pretensioning element 100 increases continuously. In other words, the insertion is initially easier than before the securing element 84 snapped into the securing element receptacle 56.
  • the securing device 82 embodied as a latching/snapping connection device 186 comprises a first bevel 152, which is defined by the first active surface area 146, and a second bevel 154, which is defined by the second active surface area. Both active surface areas 146 and 148 run transversely to the direction of insertion 48. They are inclined relative to the direction of insertion 48.
  • the first effective surface area 146 or a tangential plane to it before the transition into the second effective surface area 148 encloses a first angle of inclination 156 with the insertion direction 48 .
  • the second active surface region 148 encloses a second angle of inclination 158 with the insertion direction 48 .
  • the first active surface area 146 and the second active surface area 148 are inclined differently in relation to the direction of insertion.
  • the second tilt angle is 158 greater than the first angle of inclination, so that the second effective surface area 148 is more inclined relative to the insertion direction 48 than the first effective surface area 146.
  • the active surface areas 146 and 148 enclose an angle of attack 160 between them. Its value corresponds to 180° reduced by the values of the two angles of inclination 156 and 158. Consequently, the sum of the angles of inclination 156, 158 and the angle of attack 160 is 180°.
  • the angle of attack 160 is in a range from approximately 60° to approximately 120°. Furthermore, it lies in a range from about 80° to about 100° and is about 100°.
  • the two effective surface areas 146 and 148 define a common edge 162. This extends in a direction transverse, namely perpendicular, to the insertion direction 48. It is also rounded and points in the direction of the battery receptacle 40.
  • the edge 162 protrudes beyond a wall surface 164 surrounding the opening 136 and delimiting the battery receptacle 40 and points into the battery receptacle 40 . This can be seen particularly well in FIGS.
  • the safety device 82 is also designed in such a way that the first active surface area 146 interacts with the front end 50 when the battery 32 is inserted into the battery receptacle 40 .
  • the front end 50 slides onto the first active surface area 146, as shown schematically in Figure 8, so that with the advance movement of the battery 32, the securing element 84 moves from the securing position to the unlocking position, counter to the action of the prestressing element 100 is moved.
  • the end face 150 of the securing element 84 snaps into the securing element receptacle 56 as soon as the second active surface area 148 can slide on a slide-on edge 166 in the transition area between the retaining surface 60 and the rear side 54.
  • the snapping back of securing element 84 is particularly noticeable to a user because the second effective surface area 148 extends parallel to the direction of insertion 48 over a second distance 170, which corresponds to only about one seventh of a first distance 168 over which the first effective surface area 146 extends parallel to the Insertion direction 48 extends.
  • the second active surface area 148 is in contact with the restraining surface 60 in the securing position, namely in particular in the area of the sliding-on edge 166.
  • Securing device 82 is also configured such that second effective surface area 148 and retaining surface 60 are arranged and configured such that when battery 32 is removed from battery receptacle 40, securing element 84 slides with second effective surface area 148 on retaining surface 60 or slide-on edge 166 and thereby moves the securing element 84 from the secured position to the unlocked position.
  • the leverless safety device 82 includes an actuating element 172, which can be actuated to transfer the safety device 82 from the safety position to the unlocking position.
  • This actuating element 172 is formed by the securing element 84 .
  • the actuating element 172 includes a first actuating surface 174 for transferring the securing device 82 from the securing position to the unlocking position when the battery 32 is inserted into the battery holder 40 into it and a second actuating surface 176 for transferring the safety device 82 from the safety position to the unlocking position when the battery 32 is removed from the battery holder 40 .
  • the first effective surface area 146 forms the first actuating surface 174 and the second effective surface area 148 forms the second actuating surface 176.
  • the securing element 84 thus counteracts the insertion of the battery 32 into the battery receptacle 40 with the first effective surface area 146, and the second effective surface area 148 counteracts the removal of the battery 32 from the battery receptacle 40.
  • a force exerted by the securing element 84 on the battery 32 when removing it from the battery receptacle 40 increases more than during insertion with the same feed path parallel to the direction of insertion the battery 32 into the battery holder 40 inside. In other words, removing the battery 32 from the battery holder 40 is made significantly more difficult compared to inserting the battery 32 into the battery holder 40 .
  • the securing device 82 is configured in particular in such a way that a removal force that has to be overcome in order to remove the battery 32 from the battery receptacle 40 is greater than the weight of the battery 32.
  • the configuration of the effective surface areas 146 and 148 and the dimensioning of the prestressing element 100 with a suitable spring constant can be ensured in such a way that the extraction force is at least 10% greater than the weight of the battery 32.
  • the extraction force can even be at least 50% greater than the weight of the battery 32 In the exemplary embodiment in FIGS.
  • the electrical device 12 is aligned in the intended use in such a way that the insertion direction 48 runs parallel or essentially parallel to the direction of gravity 76 .
  • the weight of the battery 32 must also be applied in order to remove it from the battery holder 40 .
  • the battery 32 can be secured in the desired manner in the connected position in the battery receptacle 40 with the securing device 82 .
  • the removal force for removing battery 32 from battery receptacle 40 is specified in particular by a spring constant of prestressing element 100 and an inclination of second active surface region 148 relative to insertion direction 48, i.e second angle of inclination 158.
  • the functioning of the securing device 82 and the removal force for removing the battery 32 from the battery receptacle 40 in cooperation with the prestressing element 100 can be adjusted by the design of the effective surface areas 146 and 148 .
  • FIGS. 11 to 17 and 19 to 26 Alternatives to the exemplary embodiment of the securing element 84 shown in FIG. 18 and already described are shown schematically in FIGS. 11 to 17 and 19 to 26 and are provided with the same reference symbols for the sake of clarity.
  • FIGS. 11 to 17 and 22, like the exemplary embodiment of FIG. 18, are suitable for fulfilling the function of the safety device 82 as described. What these exemplary embodiments have in common is that the active surface areas 146 are each larger than the associated active surface areas 148. Furthermore, the first stretches 168 are also larger than the second stretches 170, as a result of which the connection already made above with the embodiment of Figure 18 resulting effect when inserting or removing the battery 32 in the battery holder 40 results.
  • FIGS. 11 to 17 and 22 vary in the angles of inclination 156 and 158 and thus also in the angle of attack 160. They also differ in the radii of the edges 162. In the exemplary embodiment in FIG. 14, this radius is very small or non-existent. In the embodiment of Figure 12, the radius of the edge 162 is largest.
  • FIGS. 19 to 21 and 23 to 26 show exemplary embodiments of securing elements 84 that do not enable the desired function of the securing device, i.e. in particular in these exemplary embodiments the force for transferring battery 32 into battery receptacle 40 is greater or at least the same as the force required to move the safety device 82 from the safety position to the unlocking position when the battery 32 is removed from the battery holder 40 .
  • the second active surface areas 148 are larger than the first active surface areas 146 and thus the second sections 170 are also larger than the first sections 168.
  • both active surface regions 146 and 148 are convexly curved pointing away from the securing element 84.
  • no distinction can be made between the insertion and removal of the battery 32 into or out of the battery holder 40 .
  • FIG. 21 too, there are no differences when inserting and removing the battery 32 because the active surface areas 146 and 148 are of practically identical design.
  • FIGS. 21 A further exemplary embodiment of an electrical device 10 in the form of a battery-operated electrical device 12 with a further exemplary embodiment of a battery 32 is shown schematically in FIGS.
  • the battery 32 which is in the form of a rechargeable battery pack 34, is used to supply the electrical device 10 with electrical energy.
  • a securing device 82 is also used to secure battery 32 in the connection position shown schematically in Figure 28, in which battery 32 is received in battery receptacle 40 and mechanically and/or electrically connected to the electrical device 12 is operatively connected.
  • the contacts 80 are in engagement with the connection contacts 52 in the connection position.
  • safety device 82 is not arranged or formed on electrical device 12, but on battery 32.
  • battery holder 40 In the area of battery holder 40, starting from wall surface 164 and into housing 134, there is a safety element holder 56 formed, which corresponds in its structure and function of the fuse element receptacle 56 on the battery 32 according to the embodiment of Figures 1 to 10.
  • the retaining surface 60 does not point counter to the direction of gravity 76, as in the exemplary embodiment in Figures 1 to 10, but in the direction of gravity 76.
  • the safety device 32 is arranged or formed on the battery 32 in the area of the guide element 44 . It includes a fuse element 84, which in a cuboid fuse element Ausneh- tion 86 is held movably.
  • the securing element 84 is arranged or formed in the securing element recess 86 in a securing direction 88 which runs perpendicularly to the insertion direction 48 , namely in a displaceable manner.
  • the fuse element recess 86 is open in the direction of the wall surface 164 on the battery holder 40 .
  • the first and second active surface regions 146 and 148 on the securing element 84 are also designed or arranged differently, specifically in such a way that the second active surface region 148 is essentially opposite to the direction of insertion 48 the first active surface area, on the other hand, has at least one directional component in the direction of gravity 76 or in the direction of insertion 48.
  • the second active surface area 148 and the retaining surface 60 work together to secure the battery 32 in the connected position in the battery receptacle 40.
  • the arrangement and securing of the securing element 84 in the securing element recess 86 corresponds to the configuration as described above in connection with the exemplary embodiment illustrated in FIGS. 1 to 10, so that reference can be made to the above description for the specific structure.
  • the battery 32 with the safety device 82 In order to insert the battery 32 with the safety device 82 into the battery receptacle 40, it is inserted from above in the direction of gravity 76 with the guide projections 74 into the guide grooves 72.
  • the first active surface region 146 slides on the wall surface 164, whereby the securing element 84 is moved in the direction of the wall surface 90 against the action of the prestressing element 100 until the edge 162 can slide along the wall surface 164.
  • the coil spring 102 can do this if the battery 32 is advanced further Press fuse element 84 into fuse element receptacle 56 so that it snaps into place.
  • the slide-on edge 166 then rests, as shown schematically in FIG. The battery 32 is thus secured in the connected position.
  • the first effective surface area 146 and the second effective surface area 148 are configured in a corresponding manner to the effective surface areas 146 and 148 on the securing element 84 of the exemplary embodiment in FIGS. This results in a function that is analogous to that in the exemplary embodiment in FIGS. 1 to 10.
  • the securing element 84 according to FIGS. 27 and 28 can alternatively be designed with active surface areas 146 and 148, as illustrated in connection with FIGS. 11 to 26 and described above.
  • active surface areas 146 and 148 in particular the selection of the angles of inclination 156 and 158 and the angle of attack 160, insertion and removal forces can be adjusted as already explained in detail above.
  • safety devices 82 described make it possible to secure a battery 32 in a defined manner in a battery receptacle 40 of an electrical device 12, without having to provide a release lever, as is described and customary in the prior art.
  • This has the particular advantage that, for example, where a release lever is led out of the housing 134 in conventional electrical devices 12, a handle 178 is pivotably arranged on the housing 134 become.
  • the installation space gained by eliminating the release lever can therefore be used in other ways for handling the electrical device 12 .
  • the battery 32 forms an accessory 180 which is essential for the operation of the battery-operated electrical device 12 .
  • the battery holder 40 thus forms an accessory holder 182 in this sense.
  • additional accessory receptacles 184 are formed in the electrical device 12, specifically on the chassis 18, and open pointing counter to the direction of gravity 76.
  • the accessory receptacles 184 are configured analogously to the accessory receptacle 182 in terms of their functioning. Consequently, each accessory receptacle 184 is assigned a safety device 82 corresponding to the safety device 82 described above, either arranged or configured on the accessory 180 or on the accessory receptacle 184. As described in connection with the battery 32 and the battery receptacle 40, further accessories such as accommodate, for example, pipes, brush heads or other accessories in the accessory receptacles 184 and secure them against accidental leakage. As described, inserting the accessory into the accessory receptacles 184 is easier than removing it, thus requiring less force.
  • a safety device 82 as described can also be provided in an electrical device 12 which is not battery-operated.
  • the securing device 82 can then optionally serve exclusively to secure accessory parts in corresponding accessory part receptacles 184 .
  • the security device described allows in particular a one-handed operation by a user. This person can remove the battery 32 from the battery holder 40 or an accessory with one hand from a corresponding accessory receptacle 184. Due to the leverless design of the safety device 82, no second hand is required to actuate the otherwise usual unlocking lever.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

L'invention concerne un appareil électrique fonctionnant sur batterie, se présentant en particulier sous forme d'appareil de nettoyage, d'appareil de jardinage ou d'outil électrique, ledit appareil électrique comprenant au moins un consommateur électrique et pouvant fonctionner indépendamment du réseau avec une batterie, un logement pour batterie destiné à recevoir une batterie étant agencé ou formé sur l'appareil électrique, l'appareil électrique comprenant un dispositif de fixation destiné à fixer la batterie dans une position de raccordement, dans laquelle la batterie est logée dans le logement de batterie et est en liaison fonctionnelle mécanique et/ou électrique avec l'appareil électrique, le dispositif de fixation comprenant un élément de fixation, qui est positionné dans une position de libération située sensiblement à l'extérieur du logement pour batterie, de manière à permettre un déplacement de la batterie de manière qu'elle entre dans le logement pour batterie et en ressorte, et fait saillie dans le logement pour batterie, dans une position de blocage, afin de coopérer avec un logement d'élément de blocage de la batterie et de bloquer la batterie en position de raccordement dans le logement pour batterie, l'appareil électrique se caractérisant en ce que le dispositif de blocage est réalisé sans levier et de manière que l'élément de blocage ne peut être déplacé qu'en coopération avec la batterie lors du déplacement de ladite batterie, de la position de blocage hors du logement pour batterie jusque dans la position de déblocage. L'invention concerne en outre une batterie et un appareil électrique.
PCT/EP2022/072093 2021-08-06 2022-08-05 Appareil électrique fonctionnant sur batterie, batterie et appareil électrique WO2023012336A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP22764338.4A EP4380757A1 (fr) 2021-08-06 2022-08-05 Appareil électrique fonctionnant sur batterie, batterie et appareil électrique
CN202280054681.2A CN117794695A (zh) 2021-08-06 2022-08-05 电池运行的电气设备、电池和电气设备

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021120482.8A DE102021120482A1 (de) 2021-08-06 2021-08-06 Batteriebetriebenes Elektrogerät, Batterie und Elektrogerät
DE102021120482.8 2021-08-06

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WO2023012336A1 true WO2023012336A1 (fr) 2023-02-09

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EP (1) EP4380757A1 (fr)
CN (1) CN117794695A (fr)
DE (1) DE102021120482A1 (fr)
WO (1) WO2023012336A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1925405A1 (fr) * 2006-11-27 2008-05-28 Matsushita Electric Works, Ltd. Outil d'alimentation électrique
EP2055967A1 (fr) * 2004-09-10 2009-05-06 Robert Bosch Gmbh Bloc de batterie et appareil électrique
WO2018068820A1 (fr) 2016-10-10 2018-04-19 Alfred Kärcher Gmbh & Co. Kg Dispositif d'accumulation d'énergie électrique et appareil électrique

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011081324A1 (de) 2011-08-22 2013-02-28 Wolfgang Brendel Steuergerät

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2055967A1 (fr) * 2004-09-10 2009-05-06 Robert Bosch Gmbh Bloc de batterie et appareil électrique
EP1925405A1 (fr) * 2006-11-27 2008-05-28 Matsushita Electric Works, Ltd. Outil d'alimentation électrique
WO2018068820A1 (fr) 2016-10-10 2018-04-19 Alfred Kärcher Gmbh & Co. Kg Dispositif d'accumulation d'énergie électrique et appareil électrique

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EP4380757A1 (fr) 2024-06-12
CN117794695A (zh) 2024-03-29
DE102021120482A1 (de) 2023-02-09

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