WO2020148026A1 - Machine-outil portative - Google Patents

Machine-outil portative Download PDF

Info

Publication number
WO2020148026A1
WO2020148026A1 PCT/EP2019/084548 EP2019084548W WO2020148026A1 WO 2020148026 A1 WO2020148026 A1 WO 2020148026A1 EP 2019084548 W EP2019084548 W EP 2019084548W WO 2020148026 A1 WO2020148026 A1 WO 2020148026A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery pack
housing
power tool
battery
interface
Prior art date
Application number
PCT/EP2019/084548
Other languages
German (de)
English (en)
Inventor
Axel Kuhnle
Arnold Frick
Willy Braun
Tobias Mangold
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to CN201980089028.8A priority Critical patent/CN113302025A/zh
Publication of WO2020148026A1 publication Critical patent/WO2020148026A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/12—Means for driving the impulse member comprising a crank mechanism
    • B25D11/125—Means for driving the impulse member comprising a crank mechanism with a fluid cushion between the crank drive and the striking body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/24—Damping the reaction force
    • 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
    • B25F5/006—Vibration damping means
    • 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
    • B25F5/008—Cooling means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02—Construction of casings, bodies or handles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2211/00—Details of portable percussive tools with electromotor or other motor drive
    • B25D2211/003—Crossed drill and motor spindles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2211/00—Details of portable percussive tools with electromotor or other motor drive
    • B25D2211/06—Means for driving the impulse member
    • B25D2211/061—Swash-plate actuated impulse-driving mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/121—Housing details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/245—Spatial arrangement of components of the tool relative to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/391—Use of weights; Weight properties of the tool

Definitions

  • the invention relates to a hand tool, in particular a hammer drill or a hammer, with a housing in which a drive unit having an electric motor and a gear unit having a pneumatic hammer mechanism are arranged, a motor axis of the drive unit and a working axis of the hand tool being arranged crossing one another , and with a battery interface for detachable connection of a battery pack.
  • the battery pack in particular a battery pack center of gravity, intersect a battery pack arrangement plane that runs perpendicular to a connecting line between a gear unit center of gravity and a drive unit center of gravity.
  • the position of the center of gravity of the overall system consisting of the handheld power tool and the battery pack can advantageously be optimized, so that the vibrations occurring on the handle are reduced and, moreover, the weight force in the area of the handle that is effective during processing is kept low.
  • a handheld power tool is to be understood in particular to mean a device for machining workpieces by means of an electrically driven insert tool.
  • Typical hand-held power tools in this context are hand or stand drilling machines, screwdrivers, impact drills, rotary hammers, jigsaws, circular saws, cross-cut saws, planes, angle grinders, orbital sanders, polishing machines or the like.
  • the handheld power tool has, in particular, a tool holder for releasably fastening an insert tool.
  • the housing of the handheld power tool is at least partially, in particular completely, designed as an outer housing.
  • the housing can be formed in one part or in several parts.
  • the housing is at least partially, in particular completely, made of a plastic.
  • the housing of the handheld power tool can have an inner housing which is at least partially, preferably completely, enclosed by the outer housing.
  • the electric motor can be designed as a DC motor or as an AC motor.
  • the commutation of the electric motor can be done electronically or via carbon brushes.
  • the electric motor is mounted rotatably about a motor axis in the housing of the hand machine tool.
  • the drive movement of the drive unit or of the electric motor can be transferred to the tool holder or the insert tool via the gear unit.
  • the pneumatic hammer mechanism can be designed, for example, as an eccentric hammer mechanism or as a wobble hammer mechanism.
  • the striking mechanism has a guide tube in which a racket and / or a piston are accommodated in a linearly movable manner.
  • the piston is preferably designed to be driven in a linearly oscillating manner via the eccentric unit.
  • the gear unit is designed in particular in such a way that the insert tool can be driven to rotate and / or linearly oscillate or strike along a working axis.
  • a hammer drill is to be understood in particular as a hand-held power tool that is designed to rotate and / or drive the insert tool.
  • a hammer is to be understood in particular as a hand-held power tool that is designed only to drive the insert tool.
  • a motor axis of the drive unit and a working axis of the handheld power tool which are arranged crossing one another, should be understood in particular to mean that the motor axis and the working axis are not parallel or coaxial to one another.
  • the motor axis and the working axis are preferably arranged essentially perpendicular to one another. In this context, essentially perpendicular should in particular also be understood to mean deviations in a range of approximately 15 °.
  • the axes that run essentially perpendicular to one another can intersect or skew to one another.
  • the battery pack is designed in particular as a handheld machine tool battery pack.
  • the battery interface is preferably designed to accommodate a single battery pack.
  • the handheld power tool preferably has a single battery interface.
  • the battery interface is in particular non-detachably connected to the housing of the handheld power tool.
  • the handheld power tool in particular has only a single battery pack in order to keep the total weight of the system of handheld power tool and battery pack as low as possible.
  • the battery pack is provided in particular for supplying power to the handheld power tool.
  • the battery pack has a housing, preferably made of plastic, in which at least one battery cell is arranged.
  • the battery cell can be designed as a galvanic cell, which has a structure in which a cell pole comes to lie at one end and a further cell pole lies at an opposite end.
  • the battery cell has a positive cell pole at one end and a negative cell pole at an opposite end.
  • the battery cells are preferably designed as NiCd or NiMh cells, particularly preferably as lithium-based battery cells or Li-ion battery cells.
  • the battery voltage of the battery pack is usually a multiple of the voltage of a single battery cell and results from the connection (parallel or serial) of the battery cells.
  • the battery cells are arranged in layers in the housing of the battery pack, with one layer preferably having 5 battery cells.
  • the battery pack can be designed in one layer, two layers, three layers or four layers. In particular, a height of the battery pack is greater than a width of the battery pack.
  • the battery voltage of the battery pack is preferably 18 V or 36 V.
  • the battery pack has a connection interface that corresponds to the battery interface of the handheld power tool.
  • the battery pack can in particular also be mechanically and electrically connected to a charging device via the connection interface.
  • the battery pack is designed in particular as an exchangeable battery pack.
  • the battery interface is assigned to the hand power tool or the hammer drill or the hammer.
  • the battery interface has an electrical interface for the electrical connection of the handheld power tool to the battery pack and a mechanical interface for the mechanical connection of the handheld power tool to the battery pack.
  • the electrical interface comprises in particular at least two electrical contact elements, via which energy is provided from the battery pack during operation of the handheld power tool.
  • the electrical interface can have additional contact elements via which additional information, such as temperature information or coding, can be transmitted.
  • the electrical interface preferably has a contact holder on which the electrical contact elements and / or the additional contact elements are arranged or fastened.
  • the mechanical interface is designed for the non-positive and / or positive connection of the handheld power tool, in particular the housing of the handheld power tool, to the battery pack, in particular the housing of the battery pack.
  • the mechanical interface can have, for example, a guide rail, a guide groove, a locking arm or the like for producing a force fit and / or positive connection with the battery pack.
  • a focus of the battery pack is to be understood in particular as a focus of the battery pack when it is released from the handheld power tool.
  • a gear center of gravity is to be understood in particular as a center of gravity of the gear unit, preferably at least the striking mechanism and the tool holder, with the bearing points of the gear unit. Under A drive unit center of gravity should in particular be understood to mean a center of gravity of the drive unit, preferably of the electric motor with the bearing points of the electric motor.
  • a distance of the battery pack from the connecting line is less than a length of the connecting line, in particular less than half the length of the connecting length, preferably less than 0.2 times the length of the connecting line.
  • the connecting line begins at the center of gravity of the drive unit and ends at the center of gravity of the gear unit.
  • the battery pack when connected to the battery interface, be arranged entirely within a protective area of the housing.
  • the battery pack is advantageously arranged in an area shielded by the housing, as a result of which the battery pack is protected against a direct impact in the event of a fall.
  • the protective area can be spanned by the housing alone or by the housing and a device that is fixedly or releasably connected to the housing, such as, for example, a handle, an additional handle or a dust extraction device.
  • the protective area is designed in such a way that the protective area is spaced apart from this area, regardless of which side the hand-held power tool is placed on a flat surface.
  • the housing has at least one battery pack protection element which enlarges a lateral protection area of the housing in such a way that the battery pack is arranged entirely within the lateral protection area.
  • the battery pack protection element is preferably formed in one piece or in one piece with the housing, in particular an outer housing part.
  • the protective element preferably has no further function, apart from the protection of the battery pack.
  • the battery pack protection element it is conceivable for the battery pack protection element to be designed to dampen fall protection, for example by incorporating a damping element in the region of the battery pack protection element.
  • the handheld power tool has an upper side which is arranged opposite one another in the area of the working axis and a lower side, and a front side which is arranged opposite one another in the area of the tool holder and a rear side, and two side faces.
  • the spacing of the side surfaces is increased at least in regions by the battery pack protection elements in order to broaden the lateral protection region.
  • the battery pack can be connected to the battery interface along a connection direction that extends crossing to the working axis and the motor axis.
  • the connection direction preferably extends substantially perpendicular to the Working axis.
  • the battery pack be arranged on a front of the housing facing the tool holder. This advantageously reduces the weight acting on the arm of the user in order to enable longer work with the handheld power tool.
  • the drive unit is arranged between the battery pack and the handle.
  • the battery pack be arranged at a distance from a base.
  • the footprint is preferably arranged on the underside of the hand tool.
  • the battery interface is arranged at a distance from the underside of the handheld power tool.
  • the standing surface can be designed as a flat outer surface of the housing, on which the handheld power tool is placed or placed when not in use.
  • the base and the working axis form an angle of less than 20 °, in particular less than 10 °, an interface plane of the battery interface running essentially perpendicular to the working axis. This advantageously reduces the load on the battery interface when stationary.
  • the housing be connected to a particularly vibration-insulated handle, the handle being arranged at a distance from the battery pack.
  • a particularly stable handle can advantageously be realized as a result.
  • the handle has a handle axis which is gripped by the user during operation.
  • the handle axis preferably extends crossing or substantially perpendicular to the working axis of the hand tool.
  • the handle is preferably connected to the housing of the handheld power tool via a damping unit.
  • the handle is designed to be movable relative to the housing of the handheld power tool.
  • the battery pack is arranged, in particular, at a distance from the handle axis.
  • the battery pack in the connected state have at least three outer sides that are parallel or perpendicular to one another and that are not completely covered by the housing of the handheld power tool. Effective cooling of the battery pack can advantageously be realized in this way via the housing of the battery pack.
  • the invention relates to a hand tool, in particular a hammer drill or a hammer, with a housing in which a drive unit having an electric motor is arranged, and with a battery interface for releasably connecting a battery pack to the hand tool.
  • a hand tool in particular a hammer drill or a hammer
  • the Battery interface is non-positively and / or positively connected to the housing of the hand tool.
  • an exchangeable battery interface can advantageously be provided.
  • the battery interface be non-positively and / or positively connected to a motor housing of the hand power tool, the motor housing being designed to receive the electric motor.
  • the motor housing is in particular designed as an inner housing part which is at least partially, preferably completely, enclosed by at least one outer housing part.
  • the motor housing can be formed from a material that differs from the outer housing.
  • the motor housing is formed from a stiffer housing, so that a stable connection to the battery interface is advantageously realized.
  • the motor housing is preferably made of a plastic.
  • the electric motor of the drive unit is enclosed by the motor housing, in particular at least 50%, preferably at least 80%, along its longitudinal extent.
  • the motor housing is preferably formed in one piece or in one piece.
  • one-part in particular should also be understood to mean two or more components which are connected to one another via a material bond.
  • one-piece is to be understood in particular to mean that the component is manufactured from one piece.
  • the mechanical interface have two connecting elements, each of which has a battery pack connection area for releasably connecting the battery interface to the battery pack and a housing connection area for connection to the housing of the handheld power tool.
  • a detachable connection is to be understood as a connection that can be detached without tools.
  • the battery pack connection area comprises in particular a guide element, for example a guide rail and / or a guide groove.
  • the battery pack connection area may have a latching element, such as, for example, a latching arm, and / or a force-locking element.
  • the housing connection area preferably comprises a form-locking element, for example a guide rail or a guide groove.
  • the battery pack connection area and the housing connection area are arranged in particular on different sides of the connection elements.
  • the battery interface is connected to the housing at least partially along a mounting direction, which extends in particular parallel to a motor axis of the electric motor.
  • the mounting direction of the battery interface be substantially perpendicular to the connecting direction of the Battery packs extends.
  • the mechanical battery interface at least partially, in particular completely, consist of one or more materials that have a higher rigidity than the housing of the hand tool, in particular the outer housing and / or motor housing.
  • a particularly long service life of the handheld power tool can advantageously be achieved by suitable choice of material for the battery interface.
  • the motor housing and / or the battery interface has at least one bypass opening which is designed to cool the battery interface and / or the battery pack.
  • the handheld power tool has a motor cooling system, which can be designed, for example, as a fan that is connected to a motor shaft in a rotationally fixed manner. A cooling air flow for cooling the drive unit is generated via the fan during the operation of the hand tool.
  • the bypass opening is in particular designed to partially direct the cooling air flow to the battery interface, in particular the electrical interface, for cooling the electrical contact elements.
  • the bypass opening is designed to partially direct the cooling air flow to the battery pack, in particular into the battery pack.
  • the bypass opening can be arranged, for example, in the motor housing and / or in the outer housing.
  • the invention relates to a system comprising a first hand-held power tool with a vibration-insulated handle and a second hand-held power tool with a vibration-insulated handle, the first hand-held power tool being designed as a network hand-held power tool and the second hand-held power tool as one
  • Cordless handheld machine tool is designed. It is proposed that the vibration-insulated handle of the first hand-held power tool is essentially identical to the vibration-insulated handle of the second hand-held power tool.
  • the same handle can advantageously be used for different variants of the handheld power tool.
  • the components of the vibration-insulated handle which are designed to be movable relative to the housing of the handheld power tool, are identical.
  • the damping unit of the vibration-insulated handles is also identical.
  • FIG. 1 shows a side view of a flange machine tool according to the invention
  • FIG. 2 shows a front view of the flange machine tool according to FIG. 1;
  • FIG. 3 shows an exploded view of the flange machine tool according to FIG. 1 in the region of a battery interface
  • FIG. 6 is a side view of a mesh flange machine tool
  • Fig. 7 shows an alternative embodiment of the flange machine tool.
  • the handheld power tool 10 is designed, for example, as a rotary hammer.
  • Handheld power tool 10 has a housing 12 which comprises an outer housing 14 and an inner housing 16.
  • a drive unit 20 which has an electric motor 18 and which transmits a drive movement to a gear unit 22 which has a striking mechanism 24.
  • the striking mechanism 24 is designed, for example, as a pneumatic striking mechanism.
  • the striking mechanism 24 has a guide tube 21 designed as a hammer tube, in which a piston 27 driven by an eccentric unit is guided so as to be linearly movable.
  • the piston 27 is designed to drive a racket 25, which is likewise mounted in a linearly movable manner in the guide tube 21.
  • An air spring is formed between the striker 25 and the piston 27 in the striking operation of the hand power tool.
  • the inner housing 16 has a motor housing 19 and a gear housing 23, which are enclosed by the outer housing 14.
  • the motor housing 19 is, for example, completely enclosed by the outer housing 14, while the gear housing 23 is, for example, only partially enclosed by the outer housing 14.
  • the striking mechanism 24, in particular the transmission unit 22, is essentially completely accommodated in the transmission housing 23.
  • the gear housing 23 at least partially spans a grease chamber in which a lubricant for lubricating the gear unit 22 is arranged.
  • the motor housing 19 is designed in particular for receiving and / or mounting the electric motor 18.
  • the motor housing 19 is connected to the gear housing 23 by way of example by means of a screw connection.
  • the gear housing 23 is made, for example, of a different material than the motor housing 19.
  • the gear housing 23 is made, for example, of a metallic material, while the motor housing 19 and the outer housing 14 are made of a plastic. However, it is also conceivable that the gear housing 23 consists of a plastic. In particular, the gear housing 23 and / or the motor housing has a higher strength and / or temperature resistance than the outer housing 14.
  • the drive movement of the drive unit 20 is transmitted to a tool holder 26, in which an insert tool 28 is detachably fastened.
  • the tool holder 26 is designed in particular as a drill chuck.
  • the insert tool 28 is designed to be driven in a rotationally and / or linearly oscillating or striking manner along a working axis 29.
  • the insert tool 28 can be rotated clockwise or clockwise or driven in a counterclockwise direction.
  • the working axis 29 extends, for example, crossing, in particular essentially perpendicular, to a motor axis 17 of the drive unit 20.
  • the handheld power tool 10 has a handle 30.
  • the handle 30 is arranged on a side of the housing 12 facing away from the tool holder 26.
  • the handle 30 has an operating switch 32, via which the handheld power tool 10 can be manually controlled or switched on and off.
  • the operating switch 32 is designed, for example, as a signal switch.
  • the handle 30 is designed, for example, as a vibration-decoupled handle 30.
  • the handle is connected to the housing 12 of the handheld power tool 10 via a damping unit 31.
  • the damping unit 31 essentially corresponds to the vibration decoupling unit described in DE 10 2006 029 630 A1.
  • the handle 30 is connected to the housing 12 so as to be relatively movable.
  • a locking switch 33 is arranged on the handle 30, which is designed to lock the hand tool 10 in particular in a chisel mode.
  • the handheld power tool 10 has an additional handle (not shown) which can be detachably connected to the housing 12.
  • Handheld power tool 10 is designed as a cordless handheld power tool.
  • handheld power tool 10 has a battery interface 36, via which a battery pack 38 is detachably connected to handheld power tool 10.
  • the handheld power tool 10 has electronics 40 which are designed to control or regulate the handheld power tool 10, in particular the drive unit 20 of the handheld power tool 10.
  • the electronics 40 are arranged next to the electric motor 18, in particular between the motor housing 19 and the outer housing 14.
  • the gear unit 22, in particular the gear housing 23, is arranged above the electric motor 18.
  • the electronics 40 is arranged in an electronics housing (not shown), which in particular is designed to protect the electronics 40 against the entry of dust and / or moisture.
  • Electronics 40 has a printed circuit board (not shown) on which a computing unit (not shown) and a storage unit (not shown) are arranged.
  • the handheld power tool 10 also has a user interface 56.
  • the user interface 56 comprises a display element (not shown in more detail) and an interface control element for operating the user interface 56.
  • the charge element of the battery pack 38 connected to the handheld power tool 10, temperature information relating to the handheld power tool 10 and / or the battery pack 38, is a selected operating mode and / or a selected operating mode, etc. can be displayed.
  • the user interface 56 is arranged on a side of the housing 12 facing away from the tool holder 26 and facing the handle 30.
  • Handheld power tool 10 includes a communication interface 58 for, in particular, wireless transmission and / or reception of information to or from an external device.
  • the external device can be designed, for example, as a computer network, as a smartphone, as a preferably mobile computer, or the like.
  • the communication interface 58 has a communication module 60 which is detachably connected to the handheld power tool 10.
  • the communication module 60 has a communication element, not shown, which is designed for data transmission via Bluetooth. Alternatively, it would also be conceivable that the communication element is designed for data transmission via another industry standard, such as WLAN or a mobile radio network.
  • the communication interface 58 in particular the radio module, preferably has a damping element, for example in the form of an elastic sealing ring. Via the damping element, the radio module can be effectively protected against the vibrations that occur during operation of the hand tool.
  • the communication interface 58 is arranged between the electronics 40 and the handle 30.
  • the handheld power tool has an operating mode switch 61, via which the operating mode of the rotary hammer can be switched.
  • the operating mode switch 61 is arranged, for example, on an upper side of the handheld power tool 10. Alternatively, other arrangements are also conceivable, such as, for example, on the side of the housing 12 of the handheld power tool 10, in particular adjacent to the gear unit 22.
  • the mode switch 61 has an operating element 62, which is designed, for example, as a rotary knob.
  • the rotary hammer has, for example, the operating modes chisel, rotary hammer in clockwise rotation and rotary hammer in counterclockwise rotation.
  • the electronics 40 of the handheld power tool 10 are electrically connected to the battery pack 38, in particular the battery interface 36, the operating mode switch 61, the user interface 56, the communication interface 58 and the operating switch 32, in particular for data transmission.
  • the electrical connection is made, for example, via plug connections or cable connections.
  • the battery pack 38 is arranged on a front side of the hand-held power tool 10, which faces the tool holder 26.
  • the battery pack 38 has a housing 64, in which battery cells 66 are arranged in three layers, each layer having five battery cells 66 by way of example. Due to the number of layers, the battery pack 38 has a height 35 perpendicular to the layers above one another, which is greater than a width 37 of the battery pack 38.
  • Handheld power tool 10 has a gear unit center of gravity 65 and a drive unit center of gravity 67.
  • the handheld power tool 10 has no battery pack a center of gravity 68, which is arranged between the gear unit center of gravity 65 and the drive unit center of gravity 67.
  • the battery pack 38 is advantageously arranged as close as possible to the center of gravity 68 of the hand power tool 10 in order to achieve an optimal weight distribution.
  • the battery pack 38 intersects a battery pack arrangement plane 70 that is arranged perpendicular to a connecting line 72 that extends from the drive unit center of gravity 67 to the gear unit center of gravity 65.
  • the battery pack arrangement level preferably also intersects a battery pack center of gravity 74 of the battery pack 38.
  • the battery pack 38 is arranged such that a distance 76 of the battery pack 38 from the connecting line 72 is smaller than a length of the connecting line 72.
  • the distance 76 of the battery pack 38 from the is exemplary Connecting line 72 is less than 15% of the length of connecting line 72.
  • the battery pack 38 is pushed onto the handheld power tool 10 along a connecting direction 78 when it is connected to the handheld power tool 10 or the battery interface 36 of the handheld power tool 10 (see FIG. 2).
  • the battery pack 38 is inserted laterally, for example, so that the connection direction 78 is essentially perpendicular to the working axis 29 and perpendicular to the motor axis 17.
  • the battery pack 38 it would also be conceivable for the battery pack 38 to be insertable from below or perpendicular to the working axis 29 and parallel to the motor axis 17.
  • the battery pack 38 is advantageously arranged in a protective area 80 of the handheld power tool 10 or of the housing 12 of the handheld power tool 10.
  • the protective area 80 has a frontal protective area 82 and a lateral protective area 84.
  • the battery pack 38 is protected from an impact from the front and the underside of the handheld power tool 10.
  • the protection area 80 or the frontal protection area 82 is formed by a protection area connection line 86 between the tool holder 26 and a housing foot 88 of the housing 12 of the hand tool 10.
  • the housing foot 88 is arranged in the region of the underside of the housing 12 of the handheld power tool 10, the housing foot 88 having a base 90.
  • the standing surface 90 is essentially flat, so that the hand power tool 10 can be parked on the standing surface 90.
  • the housing foot 88 has an extension 92 which extends below the battery pack 38 in the direction of the tool holder 26 and thereby enlarges the protective area 80 in such a way that that the battery pack 38 is completely arranged in this.
  • the battery pack 38 is formed at a distance from the base 90 of the handheld power tool 10.
  • the standing surface 90 and the working axis 29 are arranged such that they cross each other in such a way that when standing on the standing surface 90 the weight force acting on the battery interface is not maximal or is reduced.
  • FIG. 2 shows a front view of the handheld power tool 10 in the state connected to the battery pack 38.
  • the side protection area 84 of the protection area 80 can be seen in this view.
  • the lateral protection area 84 is spanned by the housing foot 88 and the outer housing 14 in the area of the gear unit 22.
  • the housing foot 88 has battery pack protection elements 98, which enlarge the lateral protection area 84 in such a way that the battery pack 38 is arranged completely therein.
  • the two battery pack protection elements 98 are, for example, arranged opposite one another.
  • the battery pack protection elements 98 are formed in one piece with the housing 12 of the hand power tool 10.
  • the housing foot 88 is in particular designed to shape the protective area 80 in such a way that the battery pack 38 is arranged completely therein. Thus, no components of the gear unit 22 and / or the drive unit 20 and / or the electronics 40 of the handheld power tool 10 are arranged within the housing foot 88, in particular within the extension 92 of the housing foot 88.
  • the housing foot 88 also has a work place lighting 94, which is designed to illuminate the work place.
  • Workplace lighting 94 has in particular at least one light-emitting diode and is electrically connected to electronics 40.
  • the battery pack 38 is arranged in such a way that the battery pack 38 has four exposed outer sides 96.
  • An exposed outside 96 is to be understood in particular to mean an outside of the battery pack 38 in which a line extending perpendicularly from it does not intersect the housing 12 of the handheld power tool 10.
  • the front, the back and the underside of the battery pack are completely exposed and one side surface is partially exposed (see FIG. 1).
  • FIG 3 shows the handheld power tool 10 in the region of the battery interface 36 in an exploded view.
  • the battery interface 36 has an electrical interface 100 for the electrical connection of the handheld power tool 10 to the battery pack 38 and a mechanical interface 102 mechanical connection of the handheld power tool 10 with the battery pack 38.
  • the mechanical interface 102 is non-positively and positively connected to the housing 12 of the handheld power tool 10.
  • the mechanical interface 102 is shaped in such a way that it is only connected to the housing 12 of the handheld power tool 10 in a non-positive or positive manner.
  • the mechanical interface 102 is positively connected to the inner housing 16 or the motor housing 19 and the outer housing 14 of the handheld power tool 10.
  • the outer housing 14 is formed in three parts in the area of the motor housing 19, the three outer housing parts 104 being connected to one another via a screw connection.
  • the lower two outer housing parts 104 form the housing foot 88 and in the upper two outer housing parts 104 there is a cutout 106 for the battery interface 36.
  • the motor housing 19 has connecting element 108 on its outer surface, via which the motor housing 19 can be connected to the outer housing 14, in particular the outer housing parts 104, in a form-fitting manner.
  • the connecting elements 108 are designed as form-locking elements in the form of guide grooves 110, which extend essentially parallel to the motor axis 17 of the electric motor 18.
  • the motor housing 19 has connecting elements 112 on its outer surface, via which the motor housing 19 can be connected to the battery interface 36 in a non-positive and positive manner.
  • the motor housing 19 has connecting elements 112 in the form of guide grooves 114 designed as guide elements.
  • the guide grooves 114 extend parallel to the motor axis 17 of the electric motor 18.
  • Both the guide grooves 110 and the further guide grooves 114 are designed, for example, in the form of a dovetail. However, other encompassing sliding guides are also conceivable, which enable an axially movable fixing.
  • the motor housing 19 has connecting elements 112 in the form of conical pins 116 designed as friction-locking elements for connection to the battery interface 36. The cone-shaped pins 116 extend downward parallel to the motor axis 17.
  • the mechanical interface 102 consists, for example, of two interface carriers 118, 119, each of which has a battery pack connection region 120 and a housing connection region 121.
  • the battery pack connection area 120 is designed for releasable connection to the battery pack 38 via a positive and positive connection.
  • the interface carriers 118, 119 each have a guide rail 122 in the battery pack connection region 120, which is designed to correspond to a guide groove arranged on the battery pack 38 and into this in the connected State intervenes (see Fig. 5).
  • the guide rails 122 extend essentially in a straight line along the connection direction 78 of the battery pack 38.
  • a recess 124 is arranged in each case in the battery pack connection region 120 and is designed to receive a latching element 126 of the battery pack 38 (see FIG. 4).
  • the two depressions 124 merge into one another in order to form a single depression in the assembled state.
  • the latching element 126 of the battery pack 38 is pivotally mounted in the housing 64 of the battery pack 38 and can be released from engagement with the depressions 124 by actuating an actuating element 128 of the battery pack 38 in order to detach the battery pack 38 from the flange machine tool 10.
  • the guide rail 122 and the depression 124 are arranged on the same side of the interface carriers 118, 119.
  • the housing connection area 121 is designed for the non-positive and positive connection of the battery interface 36 to the housing 12 of the flange machine tool 10.
  • the interface carriers 118, 119 each have positive locking elements 129 in the form of guide rails 130.
  • the guide rails 130 are, for example, dovetail-shaped (see FIG. 4) and are arranged on a side of the interface carriers 118, 119 opposite the battery pack connection region 120.
  • the interface carriers 118, 119 each have, by way of example, three form-locking elements which merge into one another in the assembled state in such a way that a total of three guide rails are formed.
  • the first interface carrier 118 has two force-locking elements 132, which are designed, for example, as cylindrical receptacles 134.
  • the electrical interface 100 is designed as a contact plate 136, on which two electrical contact elements 138 for power supply and two additional contact elements 139 are arranged. In the assembled state, the contact plate 136 is received between the two interface carriers 118, 119.
  • the motor housing 19 is first connected to the upper outer housing part 104 via the connecting elements 108.
  • the first interface carrier 118 is then pushed onto the motor housing 19 along the mounting direction 140, which extends parallel to the motor axis 17.
  • the guide rails 130 of the battery interface 36 are in engagement with the guide grooves 114 of the motor housing 19.
  • the first interface carrier 118 comes to rest on a stop element 142 of the outer housing 14 with the guide rail 122 and is in this position via a frictional connection between the force-locking elements 132 of the battery interface 36 and the connecting elements 112 of the motor housing 19 designed as conical pins 116.
  • the electrical interface 100 or the contact plate 136 is inserted or plugged into the first interface carrier 118 and the second interface carrier 119 is placed on the motor housing 19 pushed over the guide rails 130 of the battery interface 36 until the second interface carrier 119 comes to rest on the first interface carrier 118. Subsequently, the middle outer housing part 104 is pushed onto the motor housing 19 and screwed to the lower outer housing part 104.
  • the battery interface 36 in particular the interface carriers 118, 119, can be easily replaced by partially disassembling the housing 12 of the handheld power tool.
  • the interface carriers 118, 199 are formed from a plastic which has a higher rigidity, temperature resistance and / or wear resistance than the adjacent outer housing 14.
  • the interface carriers 118, 119 it would also be conceivable for the interface carriers 118, 119 to be at least partially, in particular completely, made of a metallic material , such as iron or magnesium, are formed.
  • the guide rails 122 in the battery pack connection region 120 are at least partially metallic, for example by coating sliding surfaces of the guide rails 122 or by connecting the guide rails 122 with metal clips, so that the metal clips at least partially form the sliding surfaces.
  • the battery interface 36 is formed at least partially in one piece or in one piece with the motor housing 19.
  • the network handheld power tool 10a is designed as a rotary hammer and has an essentially identical striking mechanism 24a to the cordless handheld power tool 10 described above.
  • the handheld power tool 10a has a power cord 152a which is connected to the housing 12a of the handheld power tool 10a in the area of the drive unit 20a.
  • the power cord 152a is electrically connected to the electronics 40a.
  • FIG. 7 shows an alternative embodiment of the handheld power tool 10 according to FIG. 5.
  • the handheld power tool 10b in contrast to the handheld power tool 10b, the handheld power tool 10b includes bypass openings 154b, 156b, via which the battery pack 38 and / or the battery interface 36b can be acted upon by a cooling air flow 158b.
  • the cooling air flow 158b is provided by way of example via a motor cooling 160b which has a fan 162b which is seated on or with a drive shaft 164b of the electric motor 18b in a rotationally fixed manner connected is.
  • the fan 162b is designed in particular for cooling the electric motor 18b.
  • the housing 12b of the handheld power tool 10b has air inlets 168b via which the cooling air flow 158b can enter the housing 12b.
  • the air inlets 168b are arranged, for example, on the underside of the housing 12b.
  • the cooling air flow 158b is guided to the battery interface 36b via the bypass openings 154b, 156b and is again guided away from the battery interface 36b in the direction of the fan 162b via further bypass openings 154b, 156b during operation of the handheld power tool 10b.
  • the hand-held machine tools 10b have bypass openings 154b in the battery interface 36b or in the interface carriers 118b, 119b and bypass openings 156b in the motor housing 19b.
  • the battery interface 36b is advantageously designed such that the electrical contact elements are cooled via the cooling air flow 158 during the operation of the hand power tool 10b.
  • the battery pack 38 has air inlets which are arranged in such a way that the cooling air flow 158b is guided into the battery pack 38 via the bypass openings 154b and cools it.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Power Tools In General (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

L'invention concerne un marteau perforateur ou un marteau à percussion comprenant un boîtier (12) dans lequel sont disposées une unité d'entraînement (20) possédant un moteur électrique (18) et une unité d'engrenage (22) possédant un mécanisme de frappe pneumatique (24), un axe de moteur (17) de l'unité d'entraînement et un axe de travail (29) de la machine-outil portative étant disposés de manière à se croiser mutuellement, et comportant une interface de batterie (36) servant à la connexion amovible d'un bloc de batteries (38). Le bloc de batteries, notamment un centre de gravité de bloc de batteries (74), croise un plan d'arrangement de bloc de batteries (70) qui s'étend perpendiculairement à une ligne de liaison (72) entre un centre de gravité d'unité d'engrenage (65) et un centre de gravité d'unité d'entraînement (67).
PCT/EP2019/084548 2019-01-14 2019-12-11 Machine-outil portative WO2020148026A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201980089028.8A CN113302025A (zh) 2019-01-14 2019-12-11 手持式工具机

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019200317.6 2019-01-14
DE102019200317.6A DE102019200317A1 (de) 2019-01-14 2019-01-14 Handwerkzeugmaschine

Publications (1)

Publication Number Publication Date
WO2020148026A1 true WO2020148026A1 (fr) 2020-07-23

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ID=68887041

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Application Number Title Priority Date Filing Date
PCT/EP2019/084548 WO2020148026A1 (fr) 2019-01-14 2019-12-11 Machine-outil portative

Country Status (3)

Country Link
CN (1) CN113302025A (fr)
DE (1) DE102019200317A1 (fr)
WO (1) WO2020148026A1 (fr)

Cited By (1)

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DE102021211953A1 (de) 2021-10-22 2023-04-27 Robert Bosch Gesellschaft mit beschränkter Haftung Handwerkzeugmaschine und Handwerkzeugmaschinensystem mit der Handwerkzeugmaschine

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Publication number Priority date Publication date Assignee Title
DE102020210247A1 (de) 2020-08-12 2022-02-17 Robert Bosch Gesellschaft mit beschränkter Haftung Akkubetriebene Vorrichtung

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DE3500397A1 (de) * 1984-03-24 1985-10-03 Matsushita Electric Works, Ltd., Kadoma, Osaka Elektrische schlagbohrmaschine
EP0561233A1 (fr) * 1992-03-19 1993-09-22 Festo KG Outil électrique de type pistolet
DE102006029630A1 (de) 2006-06-28 2008-01-03 Robert Bosch Gmbh Handwerkzeugmaschine
DE202008014976U1 (de) * 2008-11-12 2009-02-12 Robert Bosch Gmbh Akkubetriebenes Elektrohandwerkzeug
DE112014000645T5 (de) 2013-02-01 2015-11-12 Makita Corporation Hammerwerkzeug
US20150328764A1 (en) * 2013-02-01 2015-11-19 Makita Corporation Power tool
DE102015226415A1 (de) * 2015-12-22 2017-06-22 Robert Bosch Gmbh Handwerkzeugmaschine

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DE202009001437U1 (de) * 2009-01-29 2010-07-01 C. & E. Fein Gmbh Kraftgetriebenes Handwerkzeug
CN102554882B (zh) * 2012-02-28 2015-08-12 南京德朔实业有限公司 手持式工具
DE102012103604A1 (de) * 2012-04-24 2013-10-24 C. & E. Fein Gmbh Handführbare Werkzeugmaschine mit Gehäuse
DE102016201802A1 (de) * 2015-12-22 2017-06-22 Robert Bosch Gmbh Handwerkzeugmaschine

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DE3500397A1 (de) * 1984-03-24 1985-10-03 Matsushita Electric Works, Ltd., Kadoma, Osaka Elektrische schlagbohrmaschine
EP0561233A1 (fr) * 1992-03-19 1993-09-22 Festo KG Outil électrique de type pistolet
DE102006029630A1 (de) 2006-06-28 2008-01-03 Robert Bosch Gmbh Handwerkzeugmaschine
DE202008014976U1 (de) * 2008-11-12 2009-02-12 Robert Bosch Gmbh Akkubetriebenes Elektrohandwerkzeug
DE112014000645T5 (de) 2013-02-01 2015-11-12 Makita Corporation Hammerwerkzeug
US20150328764A1 (en) * 2013-02-01 2015-11-19 Makita Corporation Power tool
DE102015226415A1 (de) * 2015-12-22 2017-06-22 Robert Bosch Gmbh Handwerkzeugmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021211953A1 (de) 2021-10-22 2023-04-27 Robert Bosch Gesellschaft mit beschränkter Haftung Handwerkzeugmaschine und Handwerkzeugmaschinensystem mit der Handwerkzeugmaschine

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CN113302025A (zh) 2021-08-24

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